-raquo gt

ERM-New England inc

205 Portland Street bull Boston Massachusetts 02114 bull (617) 742-8228

Phase I Preliminary Investigation

Tansitor Electronics Inc Facility West Road

Bennington Vermont

Prepared for

Tansitor Electronics Inc PO Box 230 West Road Bennington Vermont 05201

Prepared by

ERM-New England Inc 205 Portland Street Boston Massachusetts 02114

Date

May 15 1989

C

Robert J Foxen Duane A Wanty Principal-in-Charge Hydrogeologist

jcihn C Drobinski ltQC Reviewer

ThQ

CJ

TABLE OF CONTENTS

Page

SUMMARY AND CONCLUSIONS iv

RECOMMENDATIONS vii

10 INTRODUCTION 1

11 Background 1 12 Purpose and Scope 2 13 Site Description 3

2 0 METHODOLOGY 7

2 1 Monitoring Well Installations 7

211 Locations 7 212 Drilling Methodology 8 213 Soil Sampling and Analysis 9 214 Well Construction 9

22 Surveying Guaging and Collecting Water Samples 10

3 0 RESULTS AND DISCUSSION 11

31 Physiography and Regional Geology 11 3 2 Site Geology 11 33 Soil Quality 14 34 Hydrogeology and Water Quality 17

341 Historical Water Quality 17 342 Surface Water Quality 18 343 Ground Water Flow and Direction 20 344 Ground Water Quality 23 345 Summary of Hydrogeology and

Water Quality 27

3 5 Preliminary Exposure Assessment 28

11

LIST OF FIGURES

Figure 1 Site Location and Geology Map

Figure 2 Base Map and Sample Locations

Figure 3a Location of Cross-Section

Figure 3b Generalized Geologic Cross-Section Across the Tansitor Site

Figure 4 Generalized Water Table Elevation Map

Figure 5 Generalized Plume Map - TCA Concentrations and Distribution

LIST OF TABLES

Table 1 Results of Field Screening of Split Spoon Sediments

Table 2 Surface Water Quality Data

Table 3 Water Gauging and Survey Data

Table 4 Ground Water Quality Data

APPENDICES

Appendix A Site History

Appendix B Historical Water Quality Data

Appendix C Drilling Logs

Appendix D Priority Pollutant Metals Results

111

Page

4

5

12

13

21

25

15

19

22

24

Group

SUMMARY AND CONCLUSIONS

As part of this preliminary investigation ERM installed six monitoring wells at five locations Split spoon sediment samples were collected in borings at all five locations for determining geologic lithology and performing total Volatile Organic Compound (VOC) screening Ground water samples from the five shallow wells and surface water samples from five locations were collected for laboratory analysis These locations are shown on Figure 4 Results of previous investigations are summarized in Appendix A

Soil Quality

1 ERM obtained total VOC headspace readings using a portable HNU meter from all split spoon sediments No soil samples were delivered for laboratory confirmation and no soil samples were collected from the disposal pit for laboratory or HNU analysis during the recent investigation although previous investigations have analyzed soil samples at this location The split spoon screening results follow

ERM-1S only the surficial (0 to 2 foot deep) sample had a detection of VOCs (2 ppm)

ERM-2S almost all of the split spoon samples down to the clay layer (44 ft below grade) had detections of VOCs The clay layer appears to have inhibited further downward migration of VOCs The highest HNU readings were found in the upper till at up to 700 ppm

ERM-3S4S concentrations of 20 ppm or less were detected in a few shallow samples

ERM-5D low concentrations (30 ppm or less) were detected in the top 12 feet of sediments Only one sample in the lower till (30 to 32 feet below grade) had a detection (80 ppm)

2 Laboratory analyses of soil samples are necessary to estimate quantities of contaminated soil and to determine appropriate soil remediation levels for the Tansitor site

Surface Water Quality

1 Although VOCs are entering the perennial stream south of Route 9 none of the detections from the January 1989

I iv The

Group

sampling event exceed MCLs or Vermont drinking water guidelines The upgradient sample S-ll had non-detectable readings The downgradient sample S-13 indicated a significant decrease in VOC levels from the outfall at S-7 from 152 ppb to 24 ppb The concentration in S-7 is due to outflow from the firepond and possibly from the intermittent stream north of the facility In the past concentrations at S-7 have exceeded MCLs for 111shytrichloroethane (TCA) and 11-dichloroethene (11-DCE)

2 Sample S-16 taken from the on-site intermittent stream north of the manufacturing building had 16615 ppb of total VOCs This was over MCLs for all organic constituents detected including 1 1-dichloroethane (11-DCA) 11-DCE tetrachloroethene (PCE) TCA and trichloroethene (TCE)

3 No specific historical trends can be developed regarding surface water quality since the exact sampling points for specific stations at the site have varied ERM has specifically located some of the more critical sampling points so that all future sampling data are comparable

Ground Water Flow

1 Although no in-situ or laboratory permeability testing was performed three flow zones in the overburden have tentatively been identified These include an upper and lower till zone and a glacio-lacustrine clay layer Compaction increases with depth in the till which likely causes a lower permeability within the lower till zone

2 A strong upward vertical gradient has been identified at the ERM-5SD well pair This upward gradient would tend to keep dissolved contaminant flow in this area from migrating downward No flow information is available beneath the till including bedrock However it is likely that the gradient at the ERM-5SD well pair is caused by an upward gradient from bedrock or some other permeable zone(s) beneath the clay layer

Ground Water Quality

1 A summary of the January 1989 ground water quality results follow

ERM-1S5S no VOCs were detected in the furthest upgradient and downgradient wells at the site

The

Group

ERM-2S the concentration of total VOCsppb immediately downgradient of tpit and

was 105400 he disposal

ERM-3S4S the concentrations of total VOCsand 28 ppb respectively

were 8955

MCLs for all organic constituents detected in ERM-2S and -3S were exceeded Although a portion of the plume may be flowing to either side of the ERM-5SD well pair it is likely that the firepond is a significant discharge point for VOCs

Although no current data suggests the on-site migration of dissolved contaminants into bedrock insufficient data currently exists to conclusively determine whether contaminant transport into the bedrock aquifer where nearby water supply wells are screened could occur Some factors which if confirmed would reduce the potential for downward migration include

the continuity of the clay layer in the area of the plume

upward gradients from bedrock into the overburden sediments in the area of the plume

whether or not the stream and wetlands south of Route 9 represent a flow boundaryground water discharge zone and

- the significance and effectiveness of the firepond as an interceptor of the ground water plume

VOCs have never been detected in any nearby residential bedrock water supply wells Although VOCs were reported in low concentrations once in the on-site Tansitor water supply well follow-up sampling never confirmed these results Additional Tansitor and residential water supply well sampling is planned

VI

The

Group

RECOMMENDATIONS

Soil Quality

1 ERM recommends that a soil sampling program be developed for the disposal pit area and the area near ERM-1S to define the volume of contaminated soil potentially requiring remediation The purpose of this remediation would be to mitigate the effects of the disposal pit soils as a potential source area

Surface Water Quality

1 ERM recommends that quarterly sampling at specific surface water locations be performed to establish seasonal and long term trends in surface water quality This may help establish whether concentrations are diminishing over time

2 ERM recommends that hydrologic testing be performed on the perennial stream to determine whether it is in direct hydrologic contact with the underlying aquifer sediments These tests will help establish whether VOCs in the perennial stream are coming from ground or surface water discharge Tests should also be run to determine whether the water at S-7 comes from the firepond andor the intermittent stream

3 ERM recommends performing hydrologic and chemical testing in the area around S-16 to determine the source of water and contamination in the intermittent stream

Ground Water Flow

1 ERM recommends performing in-situ permeability testing on the overburden sediments to evaluate transport rates and to obtain pre-remedial design data Shelby tube sampling is also warranted in the clay to determine the hydraulic conductivity of that layer

2 To better assess vertical and horizontal gradients in deeper layers ERM recommends installing monitoring wells into bedrock for evaluating hydrogeochemical characteristics This is necessary to demonstrate whether or not the bedrock aquifer has been or could be impacted by disposal acitivites at the pit These additional wells are also recommended to better characterize the lateral and vertical extent of the clay layer

Vll

The

Group

3 ERM recommends additional testing to determine the regional flow patterns into the downgradient wetlands and the effectiveness of the wetlands as a ground water discharge zone andor flow boundary

Ground Water Quality

1 ERM recommends additional wells in the area of the firepond to delineate the lateral and vertical extent of the ground water plume Hydrologic and chemical testing of the firepond sediments should be performed to define the effect of ground water quality on these sediments

2 ERM recommends additional testing or analyses to evaluate retardation and fate of contaminants downgradient of the disposal pit and to determine hydrogeologic properties of the overburden aquifer to aid in the design of a ground water remedial action if appropriate This may include but not be limited to additional wells test borings water sampling and geophysics

Interim Remedial Action

1 Consideration should be given to implementing focused on-site ground water remedial actions after additional hydrogeological and geochemical testing to control and abate the discharge of contaminated ground water to the firepond and capture further contaminant migration from the disposal pit area These interim actions should be consistent with overall remedies that might prove to be required based on the results of the additional investigations as recommended above

Vlll

Group

10 INTRODUCTION

11 Background

Tansitor Electronics Inc notified the United States Environmental Protection Agency (EPA) in May 1981 of potential contamination at the site to comply with CERCLA Section 103(c) This action began the National Contingency Plan (NCP) process of evaluating whether the site warranted action under the Comprehensive Environmental Response Compensation and Liability Act (CERCLA) The focus of the potential CERCLA response action is a 500 square foot disposal pit behind the Tansitor facility which received solvents and dilute acid solutions between sometime after 1956 and late 1978 or early 1979 A Preliminary Assessment (PA) was completed by the Vermont Agency of Environmental Conservation (now the VTDEC) in May 1984 The EPA completed a Site Inspection (SI) in January 1987 The Tansitor site was identified in the Federal Register as a proposed National Priorities List (NPL) site in June 1988

The EPA- and DEC- estimated volume of wastes released at the disposal pit has varied between 850 gallons (used in the HRS calculations) and 500 cubic yards (101000 gallons) Although no formal records exist Tansitor believes that the latter estimates contained in the PA and SI reports are misleading and inflated based on the following information

between 50 and 150 gallons per year of primarily dilute aqueous acidic solutions were released in the disposal pit over an approximately 17 year period and

111-trichloroethane (TCA) the predominant solvent detected at the site was not used until the mid-1970s and therefore was only released over an approximately five year period

Based on this information it is improbable that 500 cubic yards of waste were released at the disposal pit It is likely that the actual volume of solvents disposed of is closer to 500 gallons (based on 100 galsyear over five years)

Tansitor contacted ERM-New England Inc (ERM) in August 1988 to evaluate the EPAs Hazard Ranking Score (HRS) ERM identified several inaccurracies during this review which were brought to the attention of the EPA in a letter dated August 10 1989 and addressed to Stephen Lingle of the EPA from Tansitor ERM then prepared a workplan for a preliminary evaluation of the disposal pit area Tansitor approved this workplan in November 1988 This report presents results of the investigation outlined in this workplan

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Key components of ERMs investigation included

compilation of a detailed site history based on correspondence between Tansitor VTDEC and EPA personnel This compilation is attached as Appendix A

compilation of a related summary of historical water quality data for the site for the period between 1983 and 1988 which is included as Appendix B to this report and

- installation and sampling of monitoring wells and preparation of well logs in Appendix C

12 Purpose and Scope

The purpose of the investigation was to

1 determine the type and amounts of chemicals disposed in the disposal pit on the northern side of the site

2 obtain information to aid in evaluating the vertical and lateral extent of Volatile Organic Compounds (VOCs)

in ground and surface water and

3 evaluate on a preliminary basis the potential environmental risks associated with the disposal pit

The scope of work is intended to provide a preliminary characterization of site contamination downgradient of the

disposal pit and is not intended to fully characterize the site No other areas on site were evaluated Additional studies may be

necessary to completely evaluate soil and ground water quality at the site

ERMs November 1988 workplan identified a fourth purpose which was to characterize VOCs in the pit area The proposed location of ERM-2S in the pit area which would have addressed this purpose was altered after discussions with Tansitor personnel Since a soil remediation activity in the pit area is a probable outcome the location of ERM-2S was moved to a position downgradient of the pit so as not to be destroyed if soil is removed as part of a remedial activity

ERM contracted Alceon Corporation to evaluate the current data base relative to public health and environmental risk Due to the limited data available the preliminary evaluation of risk

was inconclusive Additional sampling events will address data gaps identified during this evaluation 1

A brief summary of the work scope follows ERM performed the following seven tasks to accomplish the goals of this investigation

Task 1 Task 2 Task 3 Task 4 Task 5 Task 6 Task 7

Review Existing Records Prepare a Health and Safety Plan Install Monitoring Wells Collect Samples and Survey Compile and Analyze Data Prepare Report Project Management

Results of this investigation do not include design of any remedial measures engineering cost estimates or comprehensive evaluation of potential risks

13 Site Description

Tansitor Electronics Inc is a manufacturer of electronic capacitors The Tansitor property is approximately 36 acres in size located in the Town of Bennington Vermont The site is in

91 the southwestern part of the state approximately 10 miles north of the Massachusetts border and approximately 06 miles east of the New York border (Figure 1)

The Tansitor property consists of the main manufacturing facility offices etch house parking areas open land and fire pond (Figure 2) The disposal pit lies approximately 400 feet upslope of the manufacturing building at an elevation of approximately 850 feet above Mean Sea Level (MSL) The firepond is 100 feet east of the manufacturing building and approximately 300 feet south of the disposal pit The firepond lies at the base of the slope below the disposal pit at an elevation of approximately 815 feet above MSL This pond serves as the primary source of water for the Bennington Fire Department during fires located west of Bennington

The surrounding area east and west of the site is primarily ruralresidential All of the nearby residents use ground water from the bedrock aquifer as their sole water source Whipstock Hill rises north of (behind) the facility A wetland exists on Tansitor property south of Route 9 in a stream valley which drains to the west An unnamed hill rises over 1900 feet above MSL south of the wetlands

The facility is over thirty years old and currently employs 184 people in the manufacture of tantalum electrolytic capacitors and chip type solid tantalum capacitors Production operations include

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- pressing of tantalum powder into pellets (anodes or cathodes)

- sintering in vacuum furnaces and anodizing the pellets using highly diluted solutions of nitric sulfuric and phosphoric acids and glycol

assembling the anodes and cathodes in tantalum silver or aluminum cases and

Completion of these assemblies using various welding technigues and custom built machinery

The electronic capacitors manufactured by Tansitor consist mainly of silver tantalum and palladium metals The process wastes generated from the manufacturing of these capacitors include metal plating solutions cleaning solvents degreasers and dilute acidcaustic solutions

The EPA has estimated that between 50 and 150 gallons per year of these wastes were disposed in an unlined disposal pit north of the facility between sometime after 1956 and late 1978 or early 1979 However chlorinated organic solvents primarily 111-trichloroethane were not used or disposed at the site until the mid-1970s

Ground water seeps discharge from the base of the slope south (downgradient) of the disposal pit Historical sampling in this area has shown elevated readings of VOCs The firepond at the base of the slope receives ground water discharge and has likewise been determined to contain elevated levels of VOCs The primary VOCs detected at the site to date have been 111-shytrichloroethane (TCA) and related chlorinated solvents

A detailed site history based on ERMs interviews and records review is presented in Appendix A

20 Methodology

The methodology used was in conformance to ASTM and EPA guidance documents ERM installed six monitoring wells and collected ground and surface water and soil samples during the winter of 198889 Field screening for VOCs was conducted on the split spoon soil samples from the soil borings No soil samples were delivered to a laboratory for analysis

ERM delivered water samples collected on January 3 1989 to Eastern Analytical Laboratories Inc of North Billerica Massachusetts for analysis (the resulting data were later shown to be invalid and thus were not used) VTDEC personnel delivered split water samples to the VTDEC laboratory for analysis The split VTDEC data are discussed exclusively in this report

Water samples were taken from two sources

ground water samples from the five shallow monitoring wells and

surface water samples from five historical sampling points

21 Monitoring Well Installations

211 Locations

Six wells were installed in five locations on the Tansitor Property (Figure 2) Well numbers followed by an S indicate a shallow overburden well with total depth less than 20 feet and well numbers followed by a D indicate deep overburden wells completed above the glacio-lacustrine clay layer

Well Location Purpose

ERM-1S About 75 north of Intended to be for background the disposal pit concentrations

ERM-2S About 150 south- Assess localized contaminant southwest of the transport and vertical disposal site distribution in the soil

ERM-3S Downgradient of pit Evaluate potential flow around at northeast corner the eastern side of the fire of the fire pond pond

The

ERM-4S About 400 south ofERM-2S at the northwest

Evaluate potential flow around the western side of the fire

corner of the fire pond pond

EKM-5S Southeast side offire pond

To assess shallow transport beyond the fire pond and

vertical flow

ERM-5D Southeast side of To assess deep transport fire pond underneath the fire pond

and vertical flow

212 Drilling Methodology

ERM subcontracted with CATOH Environmental Companies Inc of Albany NY for drilling services Several different drilling methods were used depending upon the soil type and total well depth Precautions were taken to assure that no cross contamination between aquifers occurred during drilling A Mobile B-61 Drill Rig capable of both rotary and hollow stem auger drilling was used Appendix C includes detailed drilling logs graphic logs and well construction diagrams

Well ERM-1S was drilled to a depth of 17 feet and wells ERM-3S 4S and 5S were drilled to 18 feet deep using 425 inch ID hollow stem augers

Well ERM-2S was begun using 625 inch inner diameter (ID) hollow stem augers (HSA) An increase in soil compaction required a change to rotary drilling at a depth of 34 feet Air rotary with a nominal six inch diameter tricone bit was used from 34 to 39 feet below ground surface Sand began to clog the bit at a depth of 39 feet Nominal four inch diameter steel casing was driven to 39 feet and the drilling method was changed to wash rotary with a nominal four inch diameter tricone bit The casing kept the sand from caving into the boring and sealed off the potentially contaminated soils above 39 feet from the deeper soils Wash rotary drilling was continued until the final boring depth 60 feet was achieved This boring was filled up to 19 feet below grade with bentonite to complete the well in the most contaminated zone based on the field screening of split spoon sediments

Monitoring well ERM-5D was drilled with 625 inch ID HSA to a depth of 20 feet An increase in soil density required a change in drilling method to wash rotary using a nominal four inch diameter tricone bit At a depth of 37 feet sand began to fill the boring and nominal four inch diameter steel casing was driven to a depth of 35 feet As with well ERM-2S the casing isolated the surface sediments The final depth of this boring was 57 feet however the boring was backfilled with bentonite up to 34 feet below grade above which the well was completed

213 Soil Sampling and Analysis

ERM performed standard split spoon sampling in accordance with ASTM standards (at intervals of five feet) in all soil borings during drilling An ERM hydrogeologist logged all samples describing all lithologic variations Samples were then stored in glass jars covered with aluminum foil capped and labelled Name of sample date time depth and blowcounts are labelled on each jar

ERM screened soil samples via headspace analysis using a portable field detector for organic vapors Either a photoionization detector (HNU PI-101) or a flame ionization detector (Foxboro Instruments OVA Model 128) was used In most cases organic vapors were measured both when the split spoon was opened and 24 hours later The 24 hour measurement is taken from the headspace by puncturing the aluminum foil in the sample jar after the sample is allowed to equilibrate at room temperature No soil samples were delivered to a laboratory for analysis

214 Well Construction

Following completion of the borings to total depth a one to two foot thick sandpack was added as a foundation for the well casing and to prevent the clogging of the screen with fine material from the formation In ERM-2S and -5D bentonite was used to fill in the borings from 60 to 19 feet below grade and 57 to 34 feet below grade respectively prior to the addition of the sandpack This was done so that the well screens could be set in the zone of highest contamination based on field screening

Two-inch diameter 0020 inch slot 304 stainless steel screen and riser were used for well construction Five feet of slotted screen was used in ERM-5D Ten feet of slotted screen was used in each of the shallow overburden wells Stainless steel centralizers were used in all wells to ensure that the screen was vertical and that the well was located in the center of the boring

The sandpack was deposited around the screened interval and extended approximately two feet above the top of the screen A bentonite pellet layer was then deposited above the sandpack to form a two-to-five foot seal A bentonite-cement grout was used to seal the remainder of the boring The top three to five feet of the boring consisted of Portland cement to provide a strong foundation for a protective steel casing The stainless steel risers protrude approximately two feet above the ground surface The protective casings are secured with locking caps

CATOH Environmental developed the wells following completion by pumping water from the well until the water became clear

22 Surveying Gauging and Collecting Water Samples

ERM subcontracted Gerald E Morrissey Inc of Bennington Vermont to survey all monitoring well locations at the site to a US Coast amp Geodetic Survey datum Elevations at the ground surface the top of the outer well casing and the top inner stainless steel pipe casing were measured

Prior to any ground water sampling an ERM hydrogeologist measured static water levels to the nearest one-hundredth of a foot The water in ERM-5D was frozen but a measurement was taken to the top of the ice Total depth was measured in all wells but ERM-5D and -3S A plug of ice prohibited measurement of total depth in ERM-3S

An ERM hydrogeologist evacuated at least three well volumes of water from the wells using dedicated bottom filling PVC bailers VTDEC personnel then collected samples for analysis of volatile organics by EPA Method 601602 In addition the Vermont DEC collected samples for analysis of priority pollutant metals

Surface water samples were collected by submersing vials and jars in the streams as designated on Figure 2 Analysis of surface water samples was identical to that of ground water samples

ERM collected samples which were delivered to Eastern Analytical Laboratories Inc (EAL) of North Billerica Massachusetts Because of maintenance being performed on EALs GCMS the samples were delivered to Toxicon Laboratories of Woburn Massachusetts The resulting data were determined by ERM to be invalid due to poor intralab chain-of-custody protocols at Toxicon and inconsistencies in laboratory procedures by Toxicon personnel

30 RESULTS AND DISCUSSION

3 1 Physiography and Regional Geology

The Tansitor site is in the southwestern corner of Vermont (Figure 1) in the Taconic Range This area is in the Hudson River basin The site is at the southern base of Whipstock Hill approximately 35 miles west of the center of Bennington Vermont An unnamed hill lies directly south across the valley

The geology of the vicinity is characterized by an overburden of glacial materials underlain by Walloomsic Slate No bedrock outcrops were observed on site The valley in which Tansitor is located was part of a glacial lake when recessional moraines blocked the valley drainage to the west A glacioshylacustrine clay deposit formed in the lake bottom and was later covered with till The extent of this clay is not well-documented in the literature

It is unclear whether this clay layer is continuous across the valley and whether it would act as an effective barrier to downward migration of contaminants into the bedrock ag_uifer The EPAs Site Inspection report states that the depth to bedrock (slate) at the Severs1 property 600 feet west of the site is 80 feet which if correct would indicate the absence of an effective clay layer at that location However if the wetlands or stream south of Route 9 represent a ground water discharge zone the presence of a limited on-site clay layer could prevent migration of contaminants into the bedrock These issues will be resolved in future investigations

The topographic slope is to the southeast An unnamed perennial stream is located across Route 9 from the site and flows towards the southwest for about 05 miles before entering Browns Brook which flows west about four miles before entering the Hoosic River An intermittent stream begins near the northeastern corner of the main building and joins the perennial stream in the wetland south of the site

3 2 Site Geology

The overburden at the Tansitor site consists of glacial tills and glacio-lacustrine clays Figure 3a shows the location of an on-site cross-section Figure 3b is a generalized cross-section for the site The till matrix is primarily mixed clays and silts with up to 40 percent sand and gravel In general till compaction increases with depth and with an increase in clay content The exact thickness of the overburden is unknown Sorption of contaminants onto the overburden sediments is likely enhanced by the high clay content of the till which could retard the movement of the contaminants

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A compact orange silty clay of glacio-lacustrine origin was found in both ERM-2S and ERM-5D at respective depths of 44 and 50 feet below grade (798 and 770 feet above Mean Sea Level) The thickness of this layer is a minimum of seven feet at ERM-5D and a minimum of 18 feet at ERM-2S (both borings were halted before the clays were completely penetrated) The other shallow wells were not advanced deep enough to intercept the clay layer

Within the till layer in ERM-2S and -5D a significant increase in the number of blow counts occurred at 10 and 15 feet respectively This reflects an increase in sediment compaction at these depths Since the sediment texture is the same above and below these intervals it is likely that the upper layer represents disturbed sediments possibly a collapse or slump structure

A lens of gray clay was found between 10 and 12 feet below ground level in ERM-4S The degree to which this may act as an impermeable barrier depends in part on the lateral extent of the clay lens

Both ERM-4S and -5D have seams of fine sand bedded with the silty clays At ERM-2S a three foot diameter boulder was intersected

Bedrock was not encountered in any of the borings Contrary to prior reports bedrock does not appear to outcrop in the immediate vicinity of the disposal pit The only bedrock outcrops observed were on the northern side of Whipstock Hill far upgradient of the site

3 3 Soil Quality

Previous soil sampling by Tansitor in the disposal pit area is described in Appendix A No additional sampling in this area was performed by ERM Results of ERMs field screening of split spoon soil samples are shown in Table 1 As indicated only one sample at the zero to 20 foot depth from the ERM-1S boring had a detection using an HNU meter The reading of 20 ppm could be due to the moisture content of the soil or the presence of VOCs Only laboratory or other more accurate analysis could confirm the presence of VOCs Future soil sampling in the disposal pit area should address this issue

In boring ERM-2S all samples between 50 and 44 feet below grade had detections of volatile organics The highest concentrations in this boring were detected between 50 and 12 feet below ground level (up to 700 ppm) At 44 feet below grade a tight clay was encountered and no volatiles were detected below this point The spoon collected above the clay layer at 40 to 42 feet below grade had a concentration of 50 ppm which is

14

Table 1

Results of Field Screening of Split Spoon Sediments

(ppm)

24 HOUR 24 HOUR

WELL NO DEPTH ON SITE HEADSPACE WELL NO DEPTH ON SITE HEADSPACE

1S 0-2 2 4S 0-2 ND ND

5-7 ND ND 5-7 lt1 ND

10-12 ND ND 10-12 ND ND

15-17 ND ND 15-17 ND ND

18-20 ND ND

2S 0-2 ND

5-7 -shy gt100 5D 0-2 ND

10-12 -shy 700 5-7 -- 3

15-17 -shy 85 10-12 -- 1

20-22 -shy 4 15-17 NO ND

25-27 -shy 6 20-22 ND ND

30-32 -shy 10 25-27 NO ND

325-34 -shy 65 30-32 80 ND

39-40 -shy 30 35-37 ND NO

40-42 -shy 5 40-42 ND ND

45-47 NO ND 45-47 ND NO

50-52 ND ND 50-52 ND NO

55-57 ND ND 55-57 NO ND

60-62 ND

-shy INDICATES THAT NO READING WAS TAKEN

3S 0-2 ND ND

5-7 ND ND ONLY PEAK CONCENTRATIONS ARE LISTED

10-12 ND ND

I | 15-17 I lt1 ND

I | 18-20 I lt1 2

The

significantly below the peak concentrations in the boring This concentration which is far below the solubility limit of the VOCs detected at the site would indicate that a Dense Non-Aqueous Phase Liquid (DNAPL) is not present above the clay layer at this location Based on these readings the well screen for EPxM-2S was set between 70 and 17 feet below grade

ERM-3S had minor detections between 15 and 20 feet below grade of 20 ppm or less ERM-4S had a trace detection at the 50 to 70 foot interval of less than 10 ppm Similarly concentrations of 30 ppm or less were detected between 50 and 12 feet below grade in ERM-5D

The Vermont unofficial unpublished guidelines for soil removal are based on RCPJV landban requirements The general guidance is to multiply the landban concentration by a factor of 20 In the absence of a landban value the MCL multiplied by a factor of 20 should be used For constituents at the site the following guidelines may be applicable

Consituent Remediation Guideline

111-trichloroethane 8200 ppb (landban-based)

trichloroethene 100 ppb (MCL-based)

chloroform 2000 ppb (MCL-based)

11-dichloroethene 140 ppb (MCL-based)

tetrachloroethene 100 ppb ( p r o p o s e d based)

MCL-

11-dichloroethane 1400 ppb (based on VT water quality guideline)

Since these guidelines are chemical-specific laboratory analyses of soil samples are necessary to determine soil remediation levels for the Tansitor site ERM did not submit any soil samples for laboratory analysis during this investigation although prior investigations included soil sampling and analysis in the disposal pit area (Appendix A)

Since a soil excavation or in-situ remediation would not normally extend below the water table the soil removal guidelines do not necessarily apply to samples collected below the water table Saturated contaminated sediments are generally addressed through a ground water remedial action

16 TtK

34 Hydroqeology and Water Quality

In order to assess potential impacts of the Tansitor disposal pit site EKM investigated ground and surface water conditions on and directly downgradient of the site As ground and surface water are interactive an analysis of both systems is necessary to assess potential migration of chemicals

For comparative purposes the Maximum Contaminant Levels (MCLs) used for defining drinking water quality are listed below for those chemicals present at the site

Parameter MCL (ppb)

11-dichloroethane 70 (VT guideline not an MCL) 11-dichloroethene 7 111-trichloroethane 200 trichloroethene 5 tetrachloroethene 5 (proposed MCL) chloroform 100 (total trihalomethanes)

341 Historical Water Quality

An extensive sampling history exists at the site since 1983 Although limited ground water sampling occurred primarily in nearby water supply wells a large volume of surface water quality data exists Unfortunately the surface water sampling locations were never standardized by staking locations in the field Therefore it is difficult to generate trends over time at specific locations The surface water sampling points should be considered approximate locations Appendix B contains a summary of all water samples collected at and near the Tansitor site

In terms of ground water quality results there has never been a detection of volatile organics in any of the residential water supply wells adjacent to the Tansitor site Only one sampling event (January 20 1984) indicated the possible presence of volatiles in the Tansitor tap water Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only detected once it is likely that this detection was a false positive or indicative of laboratory contamination Follow-up sampling to this investigation will address residential well water quality

17 The

Group

342 Surface Water Quality

Surface water quality results from the January 3 1989 event are summarized in Table 2 and historical data appear in Appendix B Sampling locations are shown on Figure 2 As indicated

sample S-3 is located northeast of the firepond

- sample S-7 is located at an outfall of a pipeline originating at the firepond before entering the perennial stream

samples S-ll and S-13 represent upgradient and downgradient locations respectively on the perennial stream south of Route 9 and

- sample S-16 is located at an upgradient point on the intermittent stream north of the facility

Sample S-3 had no detections of VOCs This result is different from past sampling events (Appendix B) where S-3 was the most contaminated of any of the surface water locations After discussions with VTDEC personnel it appears that the location of S-3 has varied in the past Therefore no accurate trends can be determined at this time

VOC concentrations were non-detectable in S-ll S-7 had a total of 142 ppb and S-13 had a total of 24 ppb Based on the location of sampling points it appears that chemicals are entering the stream downgradient of S-ll either from tributary surface water sources or from ground water discharge The Maximum Contaminant Level (MCL) for 11-dichloroethane (11-DCA) has not been defined however the unofficial Vermont drinking water guideline of 70 ppb was not exceeded The MCLs for 11shydichloroethene (11-DCE) and 11 1-trichloroethane (TCA) the other two chemicals detected in S-7 and S-13 were also not exceeded The MCLs are presented here for comparative purposes alone since the stream is not a likely source of drinking water

Sample S-16 collected from the on-site intermittent stream had a concentration of 16615 ppb of total volatiles which exceeds drinking water standards for all constituents detected This concentration may be due to ground water discharge from the slope north of the firepond some of which drains west into the intermittent stream The presence of tetrachloroethene (PCE) at 20 ppb which was not detected anywhere else at the site warrants further investigation in this area

18 The

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343 Ground Water Flow and Direction

Figure 4 shows a water table map across the site Table 3 summarizes the water level data Ground water flow is locally towards the southeast at the site at a gradient of approximately 0065 ftft

Flow Rates

Using the natural range of values below and the modified Darcy equation the average linear velocity for the ground water in the overburden above the clay at the site is probably between 67 ftyr and 0027 ftyr

hydraulic conductivity 10~4 to 10~7 cmsec of till (K) (after Freeze amp Cherry

1979)

hydraulic gradient (i) 0065 ftft (calculated between

ERM-1S and -5S)

effective porosity (n) 10 to 25

v = (Ki)n

Although permeability (K) data were not obtained during this initial investigation a likely value of permeability is 10~4

cmsec with an effective porosity of 20 which would result in an average linear velocity of 34 ftyr for the upper till zone Field permeability testing is warranted to refine this estimate The more compact lower till likely has a lower permeability which would result in a lower average linear velocity which could restrict contaminant transport

In terms of a sensitivity analysis for the above equation velocity and effective porosity are inversely proportional Therefore a larger effective porosity would result in a slower average linear velocity A higher permeability would result in a higher velocity Applying these velocity estimates to contaminant transport must take into account dispersion and retardation effects

Vertical Gradients

At the time that ERM measured the water levels in the monitoring wells water in ERM-5D was frozen in the casing above ground level This is due to a high water level The depth to ice can not be directly correlated to depth to water in this well because of expansion effects however the difference is not

20

tennis courts

S-l 1 1 ntsrml ttsrjlt stream

perannial stream

_EGEND

Surfccs Water Samp1e

fanitor(ng Wei 1

Water Table Elevatlor ~t above MSL)

Water Taole Contours

D1rect1 on of G^ourcwator F 1 ov

SCALE (feet)

bull00 280 300 400

N

ERM i gare 4 New Engona ~c

Tensi tor E i e c ^ r c n i c s Inc

Genera i zed

vater Tao le E eva t ion Map

for Jani^arj 3 1989

WELL

ERM IS

ERM 2S

ERM 3S

ERM 4S

ERM 5S

ERM 5D

Table 3

WATER GAUGING AND SURVEY DATA

MP ELEVATION

ft above MSL

86029

84387

82262

81995

82238

82237

DEPTH TO

WATER

ft below MP

9 10

3 46

160

348

9 00

100

TOTAL DEPTH

ft below MP

1345

1980

1620

17 75

WATER TABLE ELEVATION

ft above MSL

851 19

84041

82102

81647

813 38

82137

All measurements made on January 3 1989 by ERM

Frozen plug prevented measurement Depth to ice

The

Group

likely to exceed a couple of inches The difference in the depth to ice in ERM-5D and the depth to water in ERM-5S is about eight feet This represents a strong upward vertical gradient especially since ERM-5S is screened between 6 and 16 feet below grade and EKM-5D is screened between 27 and 32 feet below grade

Although ERM-5S and -5D are screened in similar strata based on sediment texture the blow counts increased considerably beyond 15 feet below grade indicating a tighter zone as described earlier The increased compaction with depth and the upward vertical gradient would tend to hinder the downward migration of dissolved contaminants in this area Dissolved contaminant flow is probably concentrated in the upper till layer due to these combined factors

Because of the difference in density between water and organic solvents a vertical gradient alone would not prohibit the downward migration of a DNAPL As discussed earlier however there is currently no evidence to indicate the presence of a DNAPL

344 Ground Water Quality

Organics

Table 4 is a summary of volatile organic concentrations in ground water (as determined by the VTDEC laboratory) from the on-site monitoring wells installed by ERM Figure 5 shows the generalized TCA plume at the site Five solvent-related compounds from the EPA Method 624 suite of parameters were identified in the overburden at the site Well ERM-5D was frozen above ground at the time of sampling and therefore no data is available

Of the six compounds detected at the site several are likely breakdown products of the more prevalent contaminants TCA is known to break down abiotically to 11-DCE and through biodegradation to 11-DCA The kinetics of the reactions favor the formation of 11-DCA It is likely that the remaining constituents trichloroethene (TCE) tetrachloroethene (PCE) and chloroform are virgin chemicals

The upgradient and downgradient wells EPJM-1S and -5S both had non-detectable readings of volatile organic chemicals This would indicate that no additional sources of ground water contamination exist upgradient of the disposal pit Although the non-detectable reading in ERM-5S indicates that considerable attenuation of contaminants has occurred between the disposal pit and beyond the fire pond it does not necessarily demonstrate that ERM-5S is the furthest downgradient advance of contaminants in ground water It is possible that the leading edge of contamshy

23 Thlaquo

Group

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wate 1 i no

1 ntsrm 1 tts stream

perennial strsam

Surface Wcw2r~ Sample

N 100

Mom tor irg We I

TCA (ODD) D or nondetsctacia

t Cancentnac

ERM F -e o Sea 1e ( Fee t )

New Erg lard 1nc

00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

TABLE OF CONTENTS

Page

SUMMARY AND CONCLUSIONS iv

RECOMMENDATIONS vii

10 INTRODUCTION 1

11 Background 1 12 Purpose and Scope 2 13 Site Description 3

2 0 METHODOLOGY 7

2 1 Monitoring Well Installations 7

211 Locations 7 212 Drilling Methodology 8 213 Soil Sampling and Analysis 9 214 Well Construction 9

22 Surveying Guaging and Collecting Water Samples 10

3 0 RESULTS AND DISCUSSION 11

31 Physiography and Regional Geology 11 3 2 Site Geology 11 33 Soil Quality 14 34 Hydrogeology and Water Quality 17

341 Historical Water Quality 17 342 Surface Water Quality 18 343 Ground Water Flow and Direction 20 344 Ground Water Quality 23 345 Summary of Hydrogeology and

Water Quality 27

3 5 Preliminary Exposure Assessment 28

11

LIST OF FIGURES

Figure 1 Site Location and Geology Map

Figure 2 Base Map and Sample Locations

Figure 3a Location of Cross-Section

Figure 3b Generalized Geologic Cross-Section Across the Tansitor Site

Figure 4 Generalized Water Table Elevation Map

Figure 5 Generalized Plume Map - TCA Concentrations and Distribution

LIST OF TABLES

Table 1 Results of Field Screening of Split Spoon Sediments

Table 2 Surface Water Quality Data

Table 3 Water Gauging and Survey Data

Table 4 Ground Water Quality Data

APPENDICES

Appendix A Site History

Appendix B Historical Water Quality Data

Appendix C Drilling Logs

Appendix D Priority Pollutant Metals Results

111

Page

4

5

12

13

21

25

15

19

22

24

Group

SUMMARY AND CONCLUSIONS

As part of this preliminary investigation ERM installed six monitoring wells at five locations Split spoon sediment samples were collected in borings at all five locations for determining geologic lithology and performing total Volatile Organic Compound (VOC) screening Ground water samples from the five shallow wells and surface water samples from five locations were collected for laboratory analysis These locations are shown on Figure 4 Results of previous investigations are summarized in Appendix A

Soil Quality

1 ERM obtained total VOC headspace readings using a portable HNU meter from all split spoon sediments No soil samples were delivered for laboratory confirmation and no soil samples were collected from the disposal pit for laboratory or HNU analysis during the recent investigation although previous investigations have analyzed soil samples at this location The split spoon screening results follow

ERM-1S only the surficial (0 to 2 foot deep) sample had a detection of VOCs (2 ppm)

ERM-2S almost all of the split spoon samples down to the clay layer (44 ft below grade) had detections of VOCs The clay layer appears to have inhibited further downward migration of VOCs The highest HNU readings were found in the upper till at up to 700 ppm

ERM-3S4S concentrations of 20 ppm or less were detected in a few shallow samples

ERM-5D low concentrations (30 ppm or less) were detected in the top 12 feet of sediments Only one sample in the lower till (30 to 32 feet below grade) had a detection (80 ppm)

2 Laboratory analyses of soil samples are necessary to estimate quantities of contaminated soil and to determine appropriate soil remediation levels for the Tansitor site

Surface Water Quality

1 Although VOCs are entering the perennial stream south of Route 9 none of the detections from the January 1989

I iv The

Group

sampling event exceed MCLs or Vermont drinking water guidelines The upgradient sample S-ll had non-detectable readings The downgradient sample S-13 indicated a significant decrease in VOC levels from the outfall at S-7 from 152 ppb to 24 ppb The concentration in S-7 is due to outflow from the firepond and possibly from the intermittent stream north of the facility In the past concentrations at S-7 have exceeded MCLs for 111shytrichloroethane (TCA) and 11-dichloroethene (11-DCE)

2 Sample S-16 taken from the on-site intermittent stream north of the manufacturing building had 16615 ppb of total VOCs This was over MCLs for all organic constituents detected including 1 1-dichloroethane (11-DCA) 11-DCE tetrachloroethene (PCE) TCA and trichloroethene (TCE)

3 No specific historical trends can be developed regarding surface water quality since the exact sampling points for specific stations at the site have varied ERM has specifically located some of the more critical sampling points so that all future sampling data are comparable

Ground Water Flow

1 Although no in-situ or laboratory permeability testing was performed three flow zones in the overburden have tentatively been identified These include an upper and lower till zone and a glacio-lacustrine clay layer Compaction increases with depth in the till which likely causes a lower permeability within the lower till zone

2 A strong upward vertical gradient has been identified at the ERM-5SD well pair This upward gradient would tend to keep dissolved contaminant flow in this area from migrating downward No flow information is available beneath the till including bedrock However it is likely that the gradient at the ERM-5SD well pair is caused by an upward gradient from bedrock or some other permeable zone(s) beneath the clay layer

Ground Water Quality

1 A summary of the January 1989 ground water quality results follow

ERM-1S5S no VOCs were detected in the furthest upgradient and downgradient wells at the site

The

Group

ERM-2S the concentration of total VOCsppb immediately downgradient of tpit and

was 105400 he disposal

ERM-3S4S the concentrations of total VOCsand 28 ppb respectively

were 8955

MCLs for all organic constituents detected in ERM-2S and -3S were exceeded Although a portion of the plume may be flowing to either side of the ERM-5SD well pair it is likely that the firepond is a significant discharge point for VOCs

Although no current data suggests the on-site migration of dissolved contaminants into bedrock insufficient data currently exists to conclusively determine whether contaminant transport into the bedrock aquifer where nearby water supply wells are screened could occur Some factors which if confirmed would reduce the potential for downward migration include

the continuity of the clay layer in the area of the plume

upward gradients from bedrock into the overburden sediments in the area of the plume

whether or not the stream and wetlands south of Route 9 represent a flow boundaryground water discharge zone and

- the significance and effectiveness of the firepond as an interceptor of the ground water plume

VOCs have never been detected in any nearby residential bedrock water supply wells Although VOCs were reported in low concentrations once in the on-site Tansitor water supply well follow-up sampling never confirmed these results Additional Tansitor and residential water supply well sampling is planned

VI

The

Group

RECOMMENDATIONS

Soil Quality

1 ERM recommends that a soil sampling program be developed for the disposal pit area and the area near ERM-1S to define the volume of contaminated soil potentially requiring remediation The purpose of this remediation would be to mitigate the effects of the disposal pit soils as a potential source area

Surface Water Quality

1 ERM recommends that quarterly sampling at specific surface water locations be performed to establish seasonal and long term trends in surface water quality This may help establish whether concentrations are diminishing over time

2 ERM recommends that hydrologic testing be performed on the perennial stream to determine whether it is in direct hydrologic contact with the underlying aquifer sediments These tests will help establish whether VOCs in the perennial stream are coming from ground or surface water discharge Tests should also be run to determine whether the water at S-7 comes from the firepond andor the intermittent stream

3 ERM recommends performing hydrologic and chemical testing in the area around S-16 to determine the source of water and contamination in the intermittent stream

Ground Water Flow

1 ERM recommends performing in-situ permeability testing on the overburden sediments to evaluate transport rates and to obtain pre-remedial design data Shelby tube sampling is also warranted in the clay to determine the hydraulic conductivity of that layer

2 To better assess vertical and horizontal gradients in deeper layers ERM recommends installing monitoring wells into bedrock for evaluating hydrogeochemical characteristics This is necessary to demonstrate whether or not the bedrock aquifer has been or could be impacted by disposal acitivites at the pit These additional wells are also recommended to better characterize the lateral and vertical extent of the clay layer

Vll

The

Group

3 ERM recommends additional testing to determine the regional flow patterns into the downgradient wetlands and the effectiveness of the wetlands as a ground water discharge zone andor flow boundary

Ground Water Quality

1 ERM recommends additional wells in the area of the firepond to delineate the lateral and vertical extent of the ground water plume Hydrologic and chemical testing of the firepond sediments should be performed to define the effect of ground water quality on these sediments

2 ERM recommends additional testing or analyses to evaluate retardation and fate of contaminants downgradient of the disposal pit and to determine hydrogeologic properties of the overburden aquifer to aid in the design of a ground water remedial action if appropriate This may include but not be limited to additional wells test borings water sampling and geophysics

Interim Remedial Action

1 Consideration should be given to implementing focused on-site ground water remedial actions after additional hydrogeological and geochemical testing to control and abate the discharge of contaminated ground water to the firepond and capture further contaminant migration from the disposal pit area These interim actions should be consistent with overall remedies that might prove to be required based on the results of the additional investigations as recommended above

Vlll

Group

10 INTRODUCTION

11 Background

Tansitor Electronics Inc notified the United States Environmental Protection Agency (EPA) in May 1981 of potential contamination at the site to comply with CERCLA Section 103(c) This action began the National Contingency Plan (NCP) process of evaluating whether the site warranted action under the Comprehensive Environmental Response Compensation and Liability Act (CERCLA) The focus of the potential CERCLA response action is a 500 square foot disposal pit behind the Tansitor facility which received solvents and dilute acid solutions between sometime after 1956 and late 1978 or early 1979 A Preliminary Assessment (PA) was completed by the Vermont Agency of Environmental Conservation (now the VTDEC) in May 1984 The EPA completed a Site Inspection (SI) in January 1987 The Tansitor site was identified in the Federal Register as a proposed National Priorities List (NPL) site in June 1988

The EPA- and DEC- estimated volume of wastes released at the disposal pit has varied between 850 gallons (used in the HRS calculations) and 500 cubic yards (101000 gallons) Although no formal records exist Tansitor believes that the latter estimates contained in the PA and SI reports are misleading and inflated based on the following information

between 50 and 150 gallons per year of primarily dilute aqueous acidic solutions were released in the disposal pit over an approximately 17 year period and

111-trichloroethane (TCA) the predominant solvent detected at the site was not used until the mid-1970s and therefore was only released over an approximately five year period

Based on this information it is improbable that 500 cubic yards of waste were released at the disposal pit It is likely that the actual volume of solvents disposed of is closer to 500 gallons (based on 100 galsyear over five years)

Tansitor contacted ERM-New England Inc (ERM) in August 1988 to evaluate the EPAs Hazard Ranking Score (HRS) ERM identified several inaccurracies during this review which were brought to the attention of the EPA in a letter dated August 10 1989 and addressed to Stephen Lingle of the EPA from Tansitor ERM then prepared a workplan for a preliminary evaluation of the disposal pit area Tansitor approved this workplan in November 1988 This report presents results of the investigation outlined in this workplan

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Key components of ERMs investigation included

compilation of a detailed site history based on correspondence between Tansitor VTDEC and EPA personnel This compilation is attached as Appendix A

compilation of a related summary of historical water quality data for the site for the period between 1983 and 1988 which is included as Appendix B to this report and

- installation and sampling of monitoring wells and preparation of well logs in Appendix C

12 Purpose and Scope

The purpose of the investigation was to

1 determine the type and amounts of chemicals disposed in the disposal pit on the northern side of the site

2 obtain information to aid in evaluating the vertical and lateral extent of Volatile Organic Compounds (VOCs)

in ground and surface water and

3 evaluate on a preliminary basis the potential environmental risks associated with the disposal pit

The scope of work is intended to provide a preliminary characterization of site contamination downgradient of the

disposal pit and is not intended to fully characterize the site No other areas on site were evaluated Additional studies may be

necessary to completely evaluate soil and ground water quality at the site

ERMs November 1988 workplan identified a fourth purpose which was to characterize VOCs in the pit area The proposed location of ERM-2S in the pit area which would have addressed this purpose was altered after discussions with Tansitor personnel Since a soil remediation activity in the pit area is a probable outcome the location of ERM-2S was moved to a position downgradient of the pit so as not to be destroyed if soil is removed as part of a remedial activity

ERM contracted Alceon Corporation to evaluate the current data base relative to public health and environmental risk Due to the limited data available the preliminary evaluation of risk

was inconclusive Additional sampling events will address data gaps identified during this evaluation 1

A brief summary of the work scope follows ERM performed the following seven tasks to accomplish the goals of this investigation

Task 1 Task 2 Task 3 Task 4 Task 5 Task 6 Task 7

Review Existing Records Prepare a Health and Safety Plan Install Monitoring Wells Collect Samples and Survey Compile and Analyze Data Prepare Report Project Management

Results of this investigation do not include design of any remedial measures engineering cost estimates or comprehensive evaluation of potential risks

13 Site Description

Tansitor Electronics Inc is a manufacturer of electronic capacitors The Tansitor property is approximately 36 acres in size located in the Town of Bennington Vermont The site is in

91 the southwestern part of the state approximately 10 miles north of the Massachusetts border and approximately 06 miles east of the New York border (Figure 1)

The Tansitor property consists of the main manufacturing facility offices etch house parking areas open land and fire pond (Figure 2) The disposal pit lies approximately 400 feet upslope of the manufacturing building at an elevation of approximately 850 feet above Mean Sea Level (MSL) The firepond is 100 feet east of the manufacturing building and approximately 300 feet south of the disposal pit The firepond lies at the base of the slope below the disposal pit at an elevation of approximately 815 feet above MSL This pond serves as the primary source of water for the Bennington Fire Department during fires located west of Bennington

The surrounding area east and west of the site is primarily ruralresidential All of the nearby residents use ground water from the bedrock aquifer as their sole water source Whipstock Hill rises north of (behind) the facility A wetland exists on Tansitor property south of Route 9 in a stream valley which drains to the west An unnamed hill rises over 1900 feet above MSL south of the wetlands

The facility is over thirty years old and currently employs 184 people in the manufacture of tantalum electrolytic capacitors and chip type solid tantalum capacitors Production operations include

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- pressing of tantalum powder into pellets (anodes or cathodes)

- sintering in vacuum furnaces and anodizing the pellets using highly diluted solutions of nitric sulfuric and phosphoric acids and glycol

assembling the anodes and cathodes in tantalum silver or aluminum cases and

Completion of these assemblies using various welding technigues and custom built machinery

The electronic capacitors manufactured by Tansitor consist mainly of silver tantalum and palladium metals The process wastes generated from the manufacturing of these capacitors include metal plating solutions cleaning solvents degreasers and dilute acidcaustic solutions

The EPA has estimated that between 50 and 150 gallons per year of these wastes were disposed in an unlined disposal pit north of the facility between sometime after 1956 and late 1978 or early 1979 However chlorinated organic solvents primarily 111-trichloroethane were not used or disposed at the site until the mid-1970s

Ground water seeps discharge from the base of the slope south (downgradient) of the disposal pit Historical sampling in this area has shown elevated readings of VOCs The firepond at the base of the slope receives ground water discharge and has likewise been determined to contain elevated levels of VOCs The primary VOCs detected at the site to date have been 111-shytrichloroethane (TCA) and related chlorinated solvents

A detailed site history based on ERMs interviews and records review is presented in Appendix A

20 Methodology

The methodology used was in conformance to ASTM and EPA guidance documents ERM installed six monitoring wells and collected ground and surface water and soil samples during the winter of 198889 Field screening for VOCs was conducted on the split spoon soil samples from the soil borings No soil samples were delivered to a laboratory for analysis

ERM delivered water samples collected on January 3 1989 to Eastern Analytical Laboratories Inc of North Billerica Massachusetts for analysis (the resulting data were later shown to be invalid and thus were not used) VTDEC personnel delivered split water samples to the VTDEC laboratory for analysis The split VTDEC data are discussed exclusively in this report

Water samples were taken from two sources

ground water samples from the five shallow monitoring wells and

surface water samples from five historical sampling points

21 Monitoring Well Installations

211 Locations

Six wells were installed in five locations on the Tansitor Property (Figure 2) Well numbers followed by an S indicate a shallow overburden well with total depth less than 20 feet and well numbers followed by a D indicate deep overburden wells completed above the glacio-lacustrine clay layer

Well Location Purpose

ERM-1S About 75 north of Intended to be for background the disposal pit concentrations

ERM-2S About 150 south- Assess localized contaminant southwest of the transport and vertical disposal site distribution in the soil

ERM-3S Downgradient of pit Evaluate potential flow around at northeast corner the eastern side of the fire of the fire pond pond

The

ERM-4S About 400 south ofERM-2S at the northwest

Evaluate potential flow around the western side of the fire

corner of the fire pond pond

EKM-5S Southeast side offire pond

To assess shallow transport beyond the fire pond and

vertical flow

ERM-5D Southeast side of To assess deep transport fire pond underneath the fire pond

and vertical flow

212 Drilling Methodology

ERM subcontracted with CATOH Environmental Companies Inc of Albany NY for drilling services Several different drilling methods were used depending upon the soil type and total well depth Precautions were taken to assure that no cross contamination between aquifers occurred during drilling A Mobile B-61 Drill Rig capable of both rotary and hollow stem auger drilling was used Appendix C includes detailed drilling logs graphic logs and well construction diagrams

Well ERM-1S was drilled to a depth of 17 feet and wells ERM-3S 4S and 5S were drilled to 18 feet deep using 425 inch ID hollow stem augers

Well ERM-2S was begun using 625 inch inner diameter (ID) hollow stem augers (HSA) An increase in soil compaction required a change to rotary drilling at a depth of 34 feet Air rotary with a nominal six inch diameter tricone bit was used from 34 to 39 feet below ground surface Sand began to clog the bit at a depth of 39 feet Nominal four inch diameter steel casing was driven to 39 feet and the drilling method was changed to wash rotary with a nominal four inch diameter tricone bit The casing kept the sand from caving into the boring and sealed off the potentially contaminated soils above 39 feet from the deeper soils Wash rotary drilling was continued until the final boring depth 60 feet was achieved This boring was filled up to 19 feet below grade with bentonite to complete the well in the most contaminated zone based on the field screening of split spoon sediments

Monitoring well ERM-5D was drilled with 625 inch ID HSA to a depth of 20 feet An increase in soil density required a change in drilling method to wash rotary using a nominal four inch diameter tricone bit At a depth of 37 feet sand began to fill the boring and nominal four inch diameter steel casing was driven to a depth of 35 feet As with well ERM-2S the casing isolated the surface sediments The final depth of this boring was 57 feet however the boring was backfilled with bentonite up to 34 feet below grade above which the well was completed

213 Soil Sampling and Analysis

ERM performed standard split spoon sampling in accordance with ASTM standards (at intervals of five feet) in all soil borings during drilling An ERM hydrogeologist logged all samples describing all lithologic variations Samples were then stored in glass jars covered with aluminum foil capped and labelled Name of sample date time depth and blowcounts are labelled on each jar

ERM screened soil samples via headspace analysis using a portable field detector for organic vapors Either a photoionization detector (HNU PI-101) or a flame ionization detector (Foxboro Instruments OVA Model 128) was used In most cases organic vapors were measured both when the split spoon was opened and 24 hours later The 24 hour measurement is taken from the headspace by puncturing the aluminum foil in the sample jar after the sample is allowed to equilibrate at room temperature No soil samples were delivered to a laboratory for analysis

214 Well Construction

Following completion of the borings to total depth a one to two foot thick sandpack was added as a foundation for the well casing and to prevent the clogging of the screen with fine material from the formation In ERM-2S and -5D bentonite was used to fill in the borings from 60 to 19 feet below grade and 57 to 34 feet below grade respectively prior to the addition of the sandpack This was done so that the well screens could be set in the zone of highest contamination based on field screening

Two-inch diameter 0020 inch slot 304 stainless steel screen and riser were used for well construction Five feet of slotted screen was used in ERM-5D Ten feet of slotted screen was used in each of the shallow overburden wells Stainless steel centralizers were used in all wells to ensure that the screen was vertical and that the well was located in the center of the boring

The sandpack was deposited around the screened interval and extended approximately two feet above the top of the screen A bentonite pellet layer was then deposited above the sandpack to form a two-to-five foot seal A bentonite-cement grout was used to seal the remainder of the boring The top three to five feet of the boring consisted of Portland cement to provide a strong foundation for a protective steel casing The stainless steel risers protrude approximately two feet above the ground surface The protective casings are secured with locking caps

CATOH Environmental developed the wells following completion by pumping water from the well until the water became clear

22 Surveying Gauging and Collecting Water Samples

ERM subcontracted Gerald E Morrissey Inc of Bennington Vermont to survey all monitoring well locations at the site to a US Coast amp Geodetic Survey datum Elevations at the ground surface the top of the outer well casing and the top inner stainless steel pipe casing were measured

Prior to any ground water sampling an ERM hydrogeologist measured static water levels to the nearest one-hundredth of a foot The water in ERM-5D was frozen but a measurement was taken to the top of the ice Total depth was measured in all wells but ERM-5D and -3S A plug of ice prohibited measurement of total depth in ERM-3S

An ERM hydrogeologist evacuated at least three well volumes of water from the wells using dedicated bottom filling PVC bailers VTDEC personnel then collected samples for analysis of volatile organics by EPA Method 601602 In addition the Vermont DEC collected samples for analysis of priority pollutant metals

Surface water samples were collected by submersing vials and jars in the streams as designated on Figure 2 Analysis of surface water samples was identical to that of ground water samples

ERM collected samples which were delivered to Eastern Analytical Laboratories Inc (EAL) of North Billerica Massachusetts Because of maintenance being performed on EALs GCMS the samples were delivered to Toxicon Laboratories of Woburn Massachusetts The resulting data were determined by ERM to be invalid due to poor intralab chain-of-custody protocols at Toxicon and inconsistencies in laboratory procedures by Toxicon personnel

30 RESULTS AND DISCUSSION

3 1 Physiography and Regional Geology

The Tansitor site is in the southwestern corner of Vermont (Figure 1) in the Taconic Range This area is in the Hudson River basin The site is at the southern base of Whipstock Hill approximately 35 miles west of the center of Bennington Vermont An unnamed hill lies directly south across the valley

The geology of the vicinity is characterized by an overburden of glacial materials underlain by Walloomsic Slate No bedrock outcrops were observed on site The valley in which Tansitor is located was part of a glacial lake when recessional moraines blocked the valley drainage to the west A glacioshylacustrine clay deposit formed in the lake bottom and was later covered with till The extent of this clay is not well-documented in the literature

It is unclear whether this clay layer is continuous across the valley and whether it would act as an effective barrier to downward migration of contaminants into the bedrock ag_uifer The EPAs Site Inspection report states that the depth to bedrock (slate) at the Severs1 property 600 feet west of the site is 80 feet which if correct would indicate the absence of an effective clay layer at that location However if the wetlands or stream south of Route 9 represent a ground water discharge zone the presence of a limited on-site clay layer could prevent migration of contaminants into the bedrock These issues will be resolved in future investigations

The topographic slope is to the southeast An unnamed perennial stream is located across Route 9 from the site and flows towards the southwest for about 05 miles before entering Browns Brook which flows west about four miles before entering the Hoosic River An intermittent stream begins near the northeastern corner of the main building and joins the perennial stream in the wetland south of the site

3 2 Site Geology

The overburden at the Tansitor site consists of glacial tills and glacio-lacustrine clays Figure 3a shows the location of an on-site cross-section Figure 3b is a generalized cross-section for the site The till matrix is primarily mixed clays and silts with up to 40 percent sand and gravel In general till compaction increases with depth and with an increase in clay content The exact thickness of the overburden is unknown Sorption of contaminants onto the overburden sediments is likely enhanced by the high clay content of the till which could retard the movement of the contaminants

11 The

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A compact orange silty clay of glacio-lacustrine origin was found in both ERM-2S and ERM-5D at respective depths of 44 and 50 feet below grade (798 and 770 feet above Mean Sea Level) The thickness of this layer is a minimum of seven feet at ERM-5D and a minimum of 18 feet at ERM-2S (both borings were halted before the clays were completely penetrated) The other shallow wells were not advanced deep enough to intercept the clay layer

Within the till layer in ERM-2S and -5D a significant increase in the number of blow counts occurred at 10 and 15 feet respectively This reflects an increase in sediment compaction at these depths Since the sediment texture is the same above and below these intervals it is likely that the upper layer represents disturbed sediments possibly a collapse or slump structure

A lens of gray clay was found between 10 and 12 feet below ground level in ERM-4S The degree to which this may act as an impermeable barrier depends in part on the lateral extent of the clay lens

Both ERM-4S and -5D have seams of fine sand bedded with the silty clays At ERM-2S a three foot diameter boulder was intersected

Bedrock was not encountered in any of the borings Contrary to prior reports bedrock does not appear to outcrop in the immediate vicinity of the disposal pit The only bedrock outcrops observed were on the northern side of Whipstock Hill far upgradient of the site

3 3 Soil Quality

Previous soil sampling by Tansitor in the disposal pit area is described in Appendix A No additional sampling in this area was performed by ERM Results of ERMs field screening of split spoon soil samples are shown in Table 1 As indicated only one sample at the zero to 20 foot depth from the ERM-1S boring had a detection using an HNU meter The reading of 20 ppm could be due to the moisture content of the soil or the presence of VOCs Only laboratory or other more accurate analysis could confirm the presence of VOCs Future soil sampling in the disposal pit area should address this issue

In boring ERM-2S all samples between 50 and 44 feet below grade had detections of volatile organics The highest concentrations in this boring were detected between 50 and 12 feet below ground level (up to 700 ppm) At 44 feet below grade a tight clay was encountered and no volatiles were detected below this point The spoon collected above the clay layer at 40 to 42 feet below grade had a concentration of 50 ppm which is

14

Table 1

Results of Field Screening of Split Spoon Sediments

(ppm)

24 HOUR 24 HOUR

WELL NO DEPTH ON SITE HEADSPACE WELL NO DEPTH ON SITE HEADSPACE

1S 0-2 2 4S 0-2 ND ND

5-7 ND ND 5-7 lt1 ND

10-12 ND ND 10-12 ND ND

15-17 ND ND 15-17 ND ND

18-20 ND ND

2S 0-2 ND

5-7 -shy gt100 5D 0-2 ND

10-12 -shy 700 5-7 -- 3

15-17 -shy 85 10-12 -- 1

20-22 -shy 4 15-17 NO ND

25-27 -shy 6 20-22 ND ND

30-32 -shy 10 25-27 NO ND

325-34 -shy 65 30-32 80 ND

39-40 -shy 30 35-37 ND NO

40-42 -shy 5 40-42 ND ND

45-47 NO ND 45-47 ND NO

50-52 ND ND 50-52 ND NO

55-57 ND ND 55-57 NO ND

60-62 ND

-shy INDICATES THAT NO READING WAS TAKEN

3S 0-2 ND ND

5-7 ND ND ONLY PEAK CONCENTRATIONS ARE LISTED

10-12 ND ND

I | 15-17 I lt1 ND

I | 18-20 I lt1 2

The

significantly below the peak concentrations in the boring This concentration which is far below the solubility limit of the VOCs detected at the site would indicate that a Dense Non-Aqueous Phase Liquid (DNAPL) is not present above the clay layer at this location Based on these readings the well screen for EPxM-2S was set between 70 and 17 feet below grade

ERM-3S had minor detections between 15 and 20 feet below grade of 20 ppm or less ERM-4S had a trace detection at the 50 to 70 foot interval of less than 10 ppm Similarly concentrations of 30 ppm or less were detected between 50 and 12 feet below grade in ERM-5D

The Vermont unofficial unpublished guidelines for soil removal are based on RCPJV landban requirements The general guidance is to multiply the landban concentration by a factor of 20 In the absence of a landban value the MCL multiplied by a factor of 20 should be used For constituents at the site the following guidelines may be applicable

Consituent Remediation Guideline

111-trichloroethane 8200 ppb (landban-based)

trichloroethene 100 ppb (MCL-based)

chloroform 2000 ppb (MCL-based)

11-dichloroethene 140 ppb (MCL-based)

tetrachloroethene 100 ppb ( p r o p o s e d based)

MCL-

11-dichloroethane 1400 ppb (based on VT water quality guideline)

Since these guidelines are chemical-specific laboratory analyses of soil samples are necessary to determine soil remediation levels for the Tansitor site ERM did not submit any soil samples for laboratory analysis during this investigation although prior investigations included soil sampling and analysis in the disposal pit area (Appendix A)

Since a soil excavation or in-situ remediation would not normally extend below the water table the soil removal guidelines do not necessarily apply to samples collected below the water table Saturated contaminated sediments are generally addressed through a ground water remedial action

16 TtK

34 Hydroqeology and Water Quality

In order to assess potential impacts of the Tansitor disposal pit site EKM investigated ground and surface water conditions on and directly downgradient of the site As ground and surface water are interactive an analysis of both systems is necessary to assess potential migration of chemicals

For comparative purposes the Maximum Contaminant Levels (MCLs) used for defining drinking water quality are listed below for those chemicals present at the site

Parameter MCL (ppb)

11-dichloroethane 70 (VT guideline not an MCL) 11-dichloroethene 7 111-trichloroethane 200 trichloroethene 5 tetrachloroethene 5 (proposed MCL) chloroform 100 (total trihalomethanes)

341 Historical Water Quality

An extensive sampling history exists at the site since 1983 Although limited ground water sampling occurred primarily in nearby water supply wells a large volume of surface water quality data exists Unfortunately the surface water sampling locations were never standardized by staking locations in the field Therefore it is difficult to generate trends over time at specific locations The surface water sampling points should be considered approximate locations Appendix B contains a summary of all water samples collected at and near the Tansitor site

In terms of ground water quality results there has never been a detection of volatile organics in any of the residential water supply wells adjacent to the Tansitor site Only one sampling event (January 20 1984) indicated the possible presence of volatiles in the Tansitor tap water Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only detected once it is likely that this detection was a false positive or indicative of laboratory contamination Follow-up sampling to this investigation will address residential well water quality

17 The

Group

342 Surface Water Quality

Surface water quality results from the January 3 1989 event are summarized in Table 2 and historical data appear in Appendix B Sampling locations are shown on Figure 2 As indicated

sample S-3 is located northeast of the firepond

- sample S-7 is located at an outfall of a pipeline originating at the firepond before entering the perennial stream

samples S-ll and S-13 represent upgradient and downgradient locations respectively on the perennial stream south of Route 9 and

- sample S-16 is located at an upgradient point on the intermittent stream north of the facility

Sample S-3 had no detections of VOCs This result is different from past sampling events (Appendix B) where S-3 was the most contaminated of any of the surface water locations After discussions with VTDEC personnel it appears that the location of S-3 has varied in the past Therefore no accurate trends can be determined at this time

VOC concentrations were non-detectable in S-ll S-7 had a total of 142 ppb and S-13 had a total of 24 ppb Based on the location of sampling points it appears that chemicals are entering the stream downgradient of S-ll either from tributary surface water sources or from ground water discharge The Maximum Contaminant Level (MCL) for 11-dichloroethane (11-DCA) has not been defined however the unofficial Vermont drinking water guideline of 70 ppb was not exceeded The MCLs for 11shydichloroethene (11-DCE) and 11 1-trichloroethane (TCA) the other two chemicals detected in S-7 and S-13 were also not exceeded The MCLs are presented here for comparative purposes alone since the stream is not a likely source of drinking water

Sample S-16 collected from the on-site intermittent stream had a concentration of 16615 ppb of total volatiles which exceeds drinking water standards for all constituents detected This concentration may be due to ground water discharge from the slope north of the firepond some of which drains west into the intermittent stream The presence of tetrachloroethene (PCE) at 20 ppb which was not detected anywhere else at the site warrants further investigation in this area

18 The

co

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343 Ground Water Flow and Direction

Figure 4 shows a water table map across the site Table 3 summarizes the water level data Ground water flow is locally towards the southeast at the site at a gradient of approximately 0065 ftft

Flow Rates

Using the natural range of values below and the modified Darcy equation the average linear velocity for the ground water in the overburden above the clay at the site is probably between 67 ftyr and 0027 ftyr

hydraulic conductivity 10~4 to 10~7 cmsec of till (K) (after Freeze amp Cherry

1979)

hydraulic gradient (i) 0065 ftft (calculated between

ERM-1S and -5S)

effective porosity (n) 10 to 25

v = (Ki)n

Although permeability (K) data were not obtained during this initial investigation a likely value of permeability is 10~4

cmsec with an effective porosity of 20 which would result in an average linear velocity of 34 ftyr for the upper till zone Field permeability testing is warranted to refine this estimate The more compact lower till likely has a lower permeability which would result in a lower average linear velocity which could restrict contaminant transport

In terms of a sensitivity analysis for the above equation velocity and effective porosity are inversely proportional Therefore a larger effective porosity would result in a slower average linear velocity A higher permeability would result in a higher velocity Applying these velocity estimates to contaminant transport must take into account dispersion and retardation effects

Vertical Gradients

At the time that ERM measured the water levels in the monitoring wells water in ERM-5D was frozen in the casing above ground level This is due to a high water level The depth to ice can not be directly correlated to depth to water in this well because of expansion effects however the difference is not

20

tennis courts

S-l 1 1 ntsrml ttsrjlt stream

perannial stream

_EGEND

Surfccs Water Samp1e

fanitor(ng Wei 1

Water Table Elevatlor ~t above MSL)

Water Taole Contours

D1rect1 on of G^ourcwator F 1 ov

SCALE (feet)

bull00 280 300 400

N

ERM i gare 4 New Engona ~c

Tensi tor E i e c ^ r c n i c s Inc

Genera i zed

vater Tao le E eva t ion Map

for Jani^arj 3 1989

WELL

ERM IS

ERM 2S

ERM 3S

ERM 4S

ERM 5S

ERM 5D

Table 3

WATER GAUGING AND SURVEY DATA

MP ELEVATION

ft above MSL

86029

84387

82262

81995

82238

82237

DEPTH TO

WATER

ft below MP

9 10

3 46

160

348

9 00

100

TOTAL DEPTH

ft below MP

1345

1980

1620

17 75

WATER TABLE ELEVATION

ft above MSL

851 19

84041

82102

81647

813 38

82137

All measurements made on January 3 1989 by ERM

Frozen plug prevented measurement Depth to ice

The

Group

likely to exceed a couple of inches The difference in the depth to ice in ERM-5D and the depth to water in ERM-5S is about eight feet This represents a strong upward vertical gradient especially since ERM-5S is screened between 6 and 16 feet below grade and EKM-5D is screened between 27 and 32 feet below grade

Although ERM-5S and -5D are screened in similar strata based on sediment texture the blow counts increased considerably beyond 15 feet below grade indicating a tighter zone as described earlier The increased compaction with depth and the upward vertical gradient would tend to hinder the downward migration of dissolved contaminants in this area Dissolved contaminant flow is probably concentrated in the upper till layer due to these combined factors

Because of the difference in density between water and organic solvents a vertical gradient alone would not prohibit the downward migration of a DNAPL As discussed earlier however there is currently no evidence to indicate the presence of a DNAPL

344 Ground Water Quality

Organics

Table 4 is a summary of volatile organic concentrations in ground water (as determined by the VTDEC laboratory) from the on-site monitoring wells installed by ERM Figure 5 shows the generalized TCA plume at the site Five solvent-related compounds from the EPA Method 624 suite of parameters were identified in the overburden at the site Well ERM-5D was frozen above ground at the time of sampling and therefore no data is available

Of the six compounds detected at the site several are likely breakdown products of the more prevalent contaminants TCA is known to break down abiotically to 11-DCE and through biodegradation to 11-DCA The kinetics of the reactions favor the formation of 11-DCA It is likely that the remaining constituents trichloroethene (TCE) tetrachloroethene (PCE) and chloroform are virgin chemicals

The upgradient and downgradient wells EPJM-1S and -5S both had non-detectable readings of volatile organic chemicals This would indicate that no additional sources of ground water contamination exist upgradient of the disposal pit Although the non-detectable reading in ERM-5S indicates that considerable attenuation of contaminants has occurred between the disposal pit and beyond the fire pond it does not necessarily demonstrate that ERM-5S is the furthest downgradient advance of contaminants in ground water It is possible that the leading edge of contamshy

23 Thlaquo

Group

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Ths

wate 1 i no

1 ntsrm 1 tts stream

perennial strsam

Surface Wcw2r~ Sample

N 100

Mom tor irg We I

TCA (ODD) D or nondetsctacia

t Cancentnac

ERM F -e o Sea 1e ( Fee t )

New Erg lard 1nc

00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

LIST OF FIGURES

Figure 1 Site Location and Geology Map

Figure 2 Base Map and Sample Locations

Figure 3a Location of Cross-Section

Figure 3b Generalized Geologic Cross-Section Across the Tansitor Site

Figure 4 Generalized Water Table Elevation Map

Figure 5 Generalized Plume Map - TCA Concentrations and Distribution

LIST OF TABLES

Table 1 Results of Field Screening of Split Spoon Sediments

Table 2 Surface Water Quality Data

Table 3 Water Gauging and Survey Data

Table 4 Ground Water Quality Data

APPENDICES

Appendix A Site History

Appendix B Historical Water Quality Data

Appendix C Drilling Logs

Appendix D Priority Pollutant Metals Results

111

Page

4

5

12

13

21

25

15

19

22

24

Group

SUMMARY AND CONCLUSIONS

As part of this preliminary investigation ERM installed six monitoring wells at five locations Split spoon sediment samples were collected in borings at all five locations for determining geologic lithology and performing total Volatile Organic Compound (VOC) screening Ground water samples from the five shallow wells and surface water samples from five locations were collected for laboratory analysis These locations are shown on Figure 4 Results of previous investigations are summarized in Appendix A

Soil Quality

1 ERM obtained total VOC headspace readings using a portable HNU meter from all split spoon sediments No soil samples were delivered for laboratory confirmation and no soil samples were collected from the disposal pit for laboratory or HNU analysis during the recent investigation although previous investigations have analyzed soil samples at this location The split spoon screening results follow

ERM-1S only the surficial (0 to 2 foot deep) sample had a detection of VOCs (2 ppm)

ERM-2S almost all of the split spoon samples down to the clay layer (44 ft below grade) had detections of VOCs The clay layer appears to have inhibited further downward migration of VOCs The highest HNU readings were found in the upper till at up to 700 ppm

ERM-3S4S concentrations of 20 ppm or less were detected in a few shallow samples

ERM-5D low concentrations (30 ppm or less) were detected in the top 12 feet of sediments Only one sample in the lower till (30 to 32 feet below grade) had a detection (80 ppm)

2 Laboratory analyses of soil samples are necessary to estimate quantities of contaminated soil and to determine appropriate soil remediation levels for the Tansitor site

Surface Water Quality

1 Although VOCs are entering the perennial stream south of Route 9 none of the detections from the January 1989

I iv The

Group

sampling event exceed MCLs or Vermont drinking water guidelines The upgradient sample S-ll had non-detectable readings The downgradient sample S-13 indicated a significant decrease in VOC levels from the outfall at S-7 from 152 ppb to 24 ppb The concentration in S-7 is due to outflow from the firepond and possibly from the intermittent stream north of the facility In the past concentrations at S-7 have exceeded MCLs for 111shytrichloroethane (TCA) and 11-dichloroethene (11-DCE)

2 Sample S-16 taken from the on-site intermittent stream north of the manufacturing building had 16615 ppb of total VOCs This was over MCLs for all organic constituents detected including 1 1-dichloroethane (11-DCA) 11-DCE tetrachloroethene (PCE) TCA and trichloroethene (TCE)

3 No specific historical trends can be developed regarding surface water quality since the exact sampling points for specific stations at the site have varied ERM has specifically located some of the more critical sampling points so that all future sampling data are comparable

Ground Water Flow

1 Although no in-situ or laboratory permeability testing was performed three flow zones in the overburden have tentatively been identified These include an upper and lower till zone and a glacio-lacustrine clay layer Compaction increases with depth in the till which likely causes a lower permeability within the lower till zone

2 A strong upward vertical gradient has been identified at the ERM-5SD well pair This upward gradient would tend to keep dissolved contaminant flow in this area from migrating downward No flow information is available beneath the till including bedrock However it is likely that the gradient at the ERM-5SD well pair is caused by an upward gradient from bedrock or some other permeable zone(s) beneath the clay layer

Ground Water Quality

1 A summary of the January 1989 ground water quality results follow

ERM-1S5S no VOCs were detected in the furthest upgradient and downgradient wells at the site

The

Group

ERM-2S the concentration of total VOCsppb immediately downgradient of tpit and

was 105400 he disposal

ERM-3S4S the concentrations of total VOCsand 28 ppb respectively

were 8955

MCLs for all organic constituents detected in ERM-2S and -3S were exceeded Although a portion of the plume may be flowing to either side of the ERM-5SD well pair it is likely that the firepond is a significant discharge point for VOCs

Although no current data suggests the on-site migration of dissolved contaminants into bedrock insufficient data currently exists to conclusively determine whether contaminant transport into the bedrock aquifer where nearby water supply wells are screened could occur Some factors which if confirmed would reduce the potential for downward migration include

the continuity of the clay layer in the area of the plume

upward gradients from bedrock into the overburden sediments in the area of the plume

whether or not the stream and wetlands south of Route 9 represent a flow boundaryground water discharge zone and

- the significance and effectiveness of the firepond as an interceptor of the ground water plume

VOCs have never been detected in any nearby residential bedrock water supply wells Although VOCs were reported in low concentrations once in the on-site Tansitor water supply well follow-up sampling never confirmed these results Additional Tansitor and residential water supply well sampling is planned

VI

The

Group

RECOMMENDATIONS

Soil Quality

1 ERM recommends that a soil sampling program be developed for the disposal pit area and the area near ERM-1S to define the volume of contaminated soil potentially requiring remediation The purpose of this remediation would be to mitigate the effects of the disposal pit soils as a potential source area

Surface Water Quality

1 ERM recommends that quarterly sampling at specific surface water locations be performed to establish seasonal and long term trends in surface water quality This may help establish whether concentrations are diminishing over time

2 ERM recommends that hydrologic testing be performed on the perennial stream to determine whether it is in direct hydrologic contact with the underlying aquifer sediments These tests will help establish whether VOCs in the perennial stream are coming from ground or surface water discharge Tests should also be run to determine whether the water at S-7 comes from the firepond andor the intermittent stream

3 ERM recommends performing hydrologic and chemical testing in the area around S-16 to determine the source of water and contamination in the intermittent stream

Ground Water Flow

1 ERM recommends performing in-situ permeability testing on the overburden sediments to evaluate transport rates and to obtain pre-remedial design data Shelby tube sampling is also warranted in the clay to determine the hydraulic conductivity of that layer

2 To better assess vertical and horizontal gradients in deeper layers ERM recommends installing monitoring wells into bedrock for evaluating hydrogeochemical characteristics This is necessary to demonstrate whether or not the bedrock aquifer has been or could be impacted by disposal acitivites at the pit These additional wells are also recommended to better characterize the lateral and vertical extent of the clay layer

Vll

The

Group

3 ERM recommends additional testing to determine the regional flow patterns into the downgradient wetlands and the effectiveness of the wetlands as a ground water discharge zone andor flow boundary

Ground Water Quality

1 ERM recommends additional wells in the area of the firepond to delineate the lateral and vertical extent of the ground water plume Hydrologic and chemical testing of the firepond sediments should be performed to define the effect of ground water quality on these sediments

2 ERM recommends additional testing or analyses to evaluate retardation and fate of contaminants downgradient of the disposal pit and to determine hydrogeologic properties of the overburden aquifer to aid in the design of a ground water remedial action if appropriate This may include but not be limited to additional wells test borings water sampling and geophysics

Interim Remedial Action

1 Consideration should be given to implementing focused on-site ground water remedial actions after additional hydrogeological and geochemical testing to control and abate the discharge of contaminated ground water to the firepond and capture further contaminant migration from the disposal pit area These interim actions should be consistent with overall remedies that might prove to be required based on the results of the additional investigations as recommended above

Vlll

Group

10 INTRODUCTION

11 Background

Tansitor Electronics Inc notified the United States Environmental Protection Agency (EPA) in May 1981 of potential contamination at the site to comply with CERCLA Section 103(c) This action began the National Contingency Plan (NCP) process of evaluating whether the site warranted action under the Comprehensive Environmental Response Compensation and Liability Act (CERCLA) The focus of the potential CERCLA response action is a 500 square foot disposal pit behind the Tansitor facility which received solvents and dilute acid solutions between sometime after 1956 and late 1978 or early 1979 A Preliminary Assessment (PA) was completed by the Vermont Agency of Environmental Conservation (now the VTDEC) in May 1984 The EPA completed a Site Inspection (SI) in January 1987 The Tansitor site was identified in the Federal Register as a proposed National Priorities List (NPL) site in June 1988

The EPA- and DEC- estimated volume of wastes released at the disposal pit has varied between 850 gallons (used in the HRS calculations) and 500 cubic yards (101000 gallons) Although no formal records exist Tansitor believes that the latter estimates contained in the PA and SI reports are misleading and inflated based on the following information

between 50 and 150 gallons per year of primarily dilute aqueous acidic solutions were released in the disposal pit over an approximately 17 year period and

111-trichloroethane (TCA) the predominant solvent detected at the site was not used until the mid-1970s and therefore was only released over an approximately five year period

Based on this information it is improbable that 500 cubic yards of waste were released at the disposal pit It is likely that the actual volume of solvents disposed of is closer to 500 gallons (based on 100 galsyear over five years)

Tansitor contacted ERM-New England Inc (ERM) in August 1988 to evaluate the EPAs Hazard Ranking Score (HRS) ERM identified several inaccurracies during this review which were brought to the attention of the EPA in a letter dated August 10 1989 and addressed to Stephen Lingle of the EPA from Tansitor ERM then prepared a workplan for a preliminary evaluation of the disposal pit area Tansitor approved this workplan in November 1988 This report presents results of the investigation outlined in this workplan

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Key components of ERMs investigation included

compilation of a detailed site history based on correspondence between Tansitor VTDEC and EPA personnel This compilation is attached as Appendix A

compilation of a related summary of historical water quality data for the site for the period between 1983 and 1988 which is included as Appendix B to this report and

- installation and sampling of monitoring wells and preparation of well logs in Appendix C

12 Purpose and Scope

The purpose of the investigation was to

1 determine the type and amounts of chemicals disposed in the disposal pit on the northern side of the site

2 obtain information to aid in evaluating the vertical and lateral extent of Volatile Organic Compounds (VOCs)

in ground and surface water and

3 evaluate on a preliminary basis the potential environmental risks associated with the disposal pit

The scope of work is intended to provide a preliminary characterization of site contamination downgradient of the

disposal pit and is not intended to fully characterize the site No other areas on site were evaluated Additional studies may be

necessary to completely evaluate soil and ground water quality at the site

ERMs November 1988 workplan identified a fourth purpose which was to characterize VOCs in the pit area The proposed location of ERM-2S in the pit area which would have addressed this purpose was altered after discussions with Tansitor personnel Since a soil remediation activity in the pit area is a probable outcome the location of ERM-2S was moved to a position downgradient of the pit so as not to be destroyed if soil is removed as part of a remedial activity

ERM contracted Alceon Corporation to evaluate the current data base relative to public health and environmental risk Due to the limited data available the preliminary evaluation of risk

was inconclusive Additional sampling events will address data gaps identified during this evaluation 1

A brief summary of the work scope follows ERM performed the following seven tasks to accomplish the goals of this investigation

Task 1 Task 2 Task 3 Task 4 Task 5 Task 6 Task 7

Review Existing Records Prepare a Health and Safety Plan Install Monitoring Wells Collect Samples and Survey Compile and Analyze Data Prepare Report Project Management

Results of this investigation do not include design of any remedial measures engineering cost estimates or comprehensive evaluation of potential risks

13 Site Description

Tansitor Electronics Inc is a manufacturer of electronic capacitors The Tansitor property is approximately 36 acres in size located in the Town of Bennington Vermont The site is in

91 the southwestern part of the state approximately 10 miles north of the Massachusetts border and approximately 06 miles east of the New York border (Figure 1)

The Tansitor property consists of the main manufacturing facility offices etch house parking areas open land and fire pond (Figure 2) The disposal pit lies approximately 400 feet upslope of the manufacturing building at an elevation of approximately 850 feet above Mean Sea Level (MSL) The firepond is 100 feet east of the manufacturing building and approximately 300 feet south of the disposal pit The firepond lies at the base of the slope below the disposal pit at an elevation of approximately 815 feet above MSL This pond serves as the primary source of water for the Bennington Fire Department during fires located west of Bennington

The surrounding area east and west of the site is primarily ruralresidential All of the nearby residents use ground water from the bedrock aquifer as their sole water source Whipstock Hill rises north of (behind) the facility A wetland exists on Tansitor property south of Route 9 in a stream valley which drains to the west An unnamed hill rises over 1900 feet above MSL south of the wetlands

The facility is over thirty years old and currently employs 184 people in the manufacture of tantalum electrolytic capacitors and chip type solid tantalum capacitors Production operations include

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- pressing of tantalum powder into pellets (anodes or cathodes)

- sintering in vacuum furnaces and anodizing the pellets using highly diluted solutions of nitric sulfuric and phosphoric acids and glycol

assembling the anodes and cathodes in tantalum silver or aluminum cases and

Completion of these assemblies using various welding technigues and custom built machinery

The electronic capacitors manufactured by Tansitor consist mainly of silver tantalum and palladium metals The process wastes generated from the manufacturing of these capacitors include metal plating solutions cleaning solvents degreasers and dilute acidcaustic solutions

The EPA has estimated that between 50 and 150 gallons per year of these wastes were disposed in an unlined disposal pit north of the facility between sometime after 1956 and late 1978 or early 1979 However chlorinated organic solvents primarily 111-trichloroethane were not used or disposed at the site until the mid-1970s

Ground water seeps discharge from the base of the slope south (downgradient) of the disposal pit Historical sampling in this area has shown elevated readings of VOCs The firepond at the base of the slope receives ground water discharge and has likewise been determined to contain elevated levels of VOCs The primary VOCs detected at the site to date have been 111-shytrichloroethane (TCA) and related chlorinated solvents

A detailed site history based on ERMs interviews and records review is presented in Appendix A

20 Methodology

The methodology used was in conformance to ASTM and EPA guidance documents ERM installed six monitoring wells and collected ground and surface water and soil samples during the winter of 198889 Field screening for VOCs was conducted on the split spoon soil samples from the soil borings No soil samples were delivered to a laboratory for analysis

ERM delivered water samples collected on January 3 1989 to Eastern Analytical Laboratories Inc of North Billerica Massachusetts for analysis (the resulting data were later shown to be invalid and thus were not used) VTDEC personnel delivered split water samples to the VTDEC laboratory for analysis The split VTDEC data are discussed exclusively in this report

Water samples were taken from two sources

ground water samples from the five shallow monitoring wells and

surface water samples from five historical sampling points

21 Monitoring Well Installations

211 Locations

Six wells were installed in five locations on the Tansitor Property (Figure 2) Well numbers followed by an S indicate a shallow overburden well with total depth less than 20 feet and well numbers followed by a D indicate deep overburden wells completed above the glacio-lacustrine clay layer

Well Location Purpose

ERM-1S About 75 north of Intended to be for background the disposal pit concentrations

ERM-2S About 150 south- Assess localized contaminant southwest of the transport and vertical disposal site distribution in the soil

ERM-3S Downgradient of pit Evaluate potential flow around at northeast corner the eastern side of the fire of the fire pond pond

The

ERM-4S About 400 south ofERM-2S at the northwest

Evaluate potential flow around the western side of the fire

corner of the fire pond pond

EKM-5S Southeast side offire pond

To assess shallow transport beyond the fire pond and

vertical flow

ERM-5D Southeast side of To assess deep transport fire pond underneath the fire pond

and vertical flow

212 Drilling Methodology

ERM subcontracted with CATOH Environmental Companies Inc of Albany NY for drilling services Several different drilling methods were used depending upon the soil type and total well depth Precautions were taken to assure that no cross contamination between aquifers occurred during drilling A Mobile B-61 Drill Rig capable of both rotary and hollow stem auger drilling was used Appendix C includes detailed drilling logs graphic logs and well construction diagrams

Well ERM-1S was drilled to a depth of 17 feet and wells ERM-3S 4S and 5S were drilled to 18 feet deep using 425 inch ID hollow stem augers

Well ERM-2S was begun using 625 inch inner diameter (ID) hollow stem augers (HSA) An increase in soil compaction required a change to rotary drilling at a depth of 34 feet Air rotary with a nominal six inch diameter tricone bit was used from 34 to 39 feet below ground surface Sand began to clog the bit at a depth of 39 feet Nominal four inch diameter steel casing was driven to 39 feet and the drilling method was changed to wash rotary with a nominal four inch diameter tricone bit The casing kept the sand from caving into the boring and sealed off the potentially contaminated soils above 39 feet from the deeper soils Wash rotary drilling was continued until the final boring depth 60 feet was achieved This boring was filled up to 19 feet below grade with bentonite to complete the well in the most contaminated zone based on the field screening of split spoon sediments

Monitoring well ERM-5D was drilled with 625 inch ID HSA to a depth of 20 feet An increase in soil density required a change in drilling method to wash rotary using a nominal four inch diameter tricone bit At a depth of 37 feet sand began to fill the boring and nominal four inch diameter steel casing was driven to a depth of 35 feet As with well ERM-2S the casing isolated the surface sediments The final depth of this boring was 57 feet however the boring was backfilled with bentonite up to 34 feet below grade above which the well was completed

213 Soil Sampling and Analysis

ERM performed standard split spoon sampling in accordance with ASTM standards (at intervals of five feet) in all soil borings during drilling An ERM hydrogeologist logged all samples describing all lithologic variations Samples were then stored in glass jars covered with aluminum foil capped and labelled Name of sample date time depth and blowcounts are labelled on each jar

ERM screened soil samples via headspace analysis using a portable field detector for organic vapors Either a photoionization detector (HNU PI-101) or a flame ionization detector (Foxboro Instruments OVA Model 128) was used In most cases organic vapors were measured both when the split spoon was opened and 24 hours later The 24 hour measurement is taken from the headspace by puncturing the aluminum foil in the sample jar after the sample is allowed to equilibrate at room temperature No soil samples were delivered to a laboratory for analysis

214 Well Construction

Following completion of the borings to total depth a one to two foot thick sandpack was added as a foundation for the well casing and to prevent the clogging of the screen with fine material from the formation In ERM-2S and -5D bentonite was used to fill in the borings from 60 to 19 feet below grade and 57 to 34 feet below grade respectively prior to the addition of the sandpack This was done so that the well screens could be set in the zone of highest contamination based on field screening

Two-inch diameter 0020 inch slot 304 stainless steel screen and riser were used for well construction Five feet of slotted screen was used in ERM-5D Ten feet of slotted screen was used in each of the shallow overburden wells Stainless steel centralizers were used in all wells to ensure that the screen was vertical and that the well was located in the center of the boring

The sandpack was deposited around the screened interval and extended approximately two feet above the top of the screen A bentonite pellet layer was then deposited above the sandpack to form a two-to-five foot seal A bentonite-cement grout was used to seal the remainder of the boring The top three to five feet of the boring consisted of Portland cement to provide a strong foundation for a protective steel casing The stainless steel risers protrude approximately two feet above the ground surface The protective casings are secured with locking caps

CATOH Environmental developed the wells following completion by pumping water from the well until the water became clear

22 Surveying Gauging and Collecting Water Samples

ERM subcontracted Gerald E Morrissey Inc of Bennington Vermont to survey all monitoring well locations at the site to a US Coast amp Geodetic Survey datum Elevations at the ground surface the top of the outer well casing and the top inner stainless steel pipe casing were measured

Prior to any ground water sampling an ERM hydrogeologist measured static water levels to the nearest one-hundredth of a foot The water in ERM-5D was frozen but a measurement was taken to the top of the ice Total depth was measured in all wells but ERM-5D and -3S A plug of ice prohibited measurement of total depth in ERM-3S

An ERM hydrogeologist evacuated at least three well volumes of water from the wells using dedicated bottom filling PVC bailers VTDEC personnel then collected samples for analysis of volatile organics by EPA Method 601602 In addition the Vermont DEC collected samples for analysis of priority pollutant metals

Surface water samples were collected by submersing vials and jars in the streams as designated on Figure 2 Analysis of surface water samples was identical to that of ground water samples

ERM collected samples which were delivered to Eastern Analytical Laboratories Inc (EAL) of North Billerica Massachusetts Because of maintenance being performed on EALs GCMS the samples were delivered to Toxicon Laboratories of Woburn Massachusetts The resulting data were determined by ERM to be invalid due to poor intralab chain-of-custody protocols at Toxicon and inconsistencies in laboratory procedures by Toxicon personnel

30 RESULTS AND DISCUSSION

3 1 Physiography and Regional Geology

The Tansitor site is in the southwestern corner of Vermont (Figure 1) in the Taconic Range This area is in the Hudson River basin The site is at the southern base of Whipstock Hill approximately 35 miles west of the center of Bennington Vermont An unnamed hill lies directly south across the valley

The geology of the vicinity is characterized by an overburden of glacial materials underlain by Walloomsic Slate No bedrock outcrops were observed on site The valley in which Tansitor is located was part of a glacial lake when recessional moraines blocked the valley drainage to the west A glacioshylacustrine clay deposit formed in the lake bottom and was later covered with till The extent of this clay is not well-documented in the literature

It is unclear whether this clay layer is continuous across the valley and whether it would act as an effective barrier to downward migration of contaminants into the bedrock ag_uifer The EPAs Site Inspection report states that the depth to bedrock (slate) at the Severs1 property 600 feet west of the site is 80 feet which if correct would indicate the absence of an effective clay layer at that location However if the wetlands or stream south of Route 9 represent a ground water discharge zone the presence of a limited on-site clay layer could prevent migration of contaminants into the bedrock These issues will be resolved in future investigations

The topographic slope is to the southeast An unnamed perennial stream is located across Route 9 from the site and flows towards the southwest for about 05 miles before entering Browns Brook which flows west about four miles before entering the Hoosic River An intermittent stream begins near the northeastern corner of the main building and joins the perennial stream in the wetland south of the site

3 2 Site Geology

The overburden at the Tansitor site consists of glacial tills and glacio-lacustrine clays Figure 3a shows the location of an on-site cross-section Figure 3b is a generalized cross-section for the site The till matrix is primarily mixed clays and silts with up to 40 percent sand and gravel In general till compaction increases with depth and with an increase in clay content The exact thickness of the overburden is unknown Sorption of contaminants onto the overburden sediments is likely enhanced by the high clay content of the till which could retard the movement of the contaminants

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A compact orange silty clay of glacio-lacustrine origin was found in both ERM-2S and ERM-5D at respective depths of 44 and 50 feet below grade (798 and 770 feet above Mean Sea Level) The thickness of this layer is a minimum of seven feet at ERM-5D and a minimum of 18 feet at ERM-2S (both borings were halted before the clays were completely penetrated) The other shallow wells were not advanced deep enough to intercept the clay layer

Within the till layer in ERM-2S and -5D a significant increase in the number of blow counts occurred at 10 and 15 feet respectively This reflects an increase in sediment compaction at these depths Since the sediment texture is the same above and below these intervals it is likely that the upper layer represents disturbed sediments possibly a collapse or slump structure

A lens of gray clay was found between 10 and 12 feet below ground level in ERM-4S The degree to which this may act as an impermeable barrier depends in part on the lateral extent of the clay lens

Both ERM-4S and -5D have seams of fine sand bedded with the silty clays At ERM-2S a three foot diameter boulder was intersected

Bedrock was not encountered in any of the borings Contrary to prior reports bedrock does not appear to outcrop in the immediate vicinity of the disposal pit The only bedrock outcrops observed were on the northern side of Whipstock Hill far upgradient of the site

3 3 Soil Quality

Previous soil sampling by Tansitor in the disposal pit area is described in Appendix A No additional sampling in this area was performed by ERM Results of ERMs field screening of split spoon soil samples are shown in Table 1 As indicated only one sample at the zero to 20 foot depth from the ERM-1S boring had a detection using an HNU meter The reading of 20 ppm could be due to the moisture content of the soil or the presence of VOCs Only laboratory or other more accurate analysis could confirm the presence of VOCs Future soil sampling in the disposal pit area should address this issue

In boring ERM-2S all samples between 50 and 44 feet below grade had detections of volatile organics The highest concentrations in this boring were detected between 50 and 12 feet below ground level (up to 700 ppm) At 44 feet below grade a tight clay was encountered and no volatiles were detected below this point The spoon collected above the clay layer at 40 to 42 feet below grade had a concentration of 50 ppm which is

14

Table 1

Results of Field Screening of Split Spoon Sediments

(ppm)

24 HOUR 24 HOUR

WELL NO DEPTH ON SITE HEADSPACE WELL NO DEPTH ON SITE HEADSPACE

1S 0-2 2 4S 0-2 ND ND

5-7 ND ND 5-7 lt1 ND

10-12 ND ND 10-12 ND ND

15-17 ND ND 15-17 ND ND

18-20 ND ND

2S 0-2 ND

5-7 -shy gt100 5D 0-2 ND

10-12 -shy 700 5-7 -- 3

15-17 -shy 85 10-12 -- 1

20-22 -shy 4 15-17 NO ND

25-27 -shy 6 20-22 ND ND

30-32 -shy 10 25-27 NO ND

325-34 -shy 65 30-32 80 ND

39-40 -shy 30 35-37 ND NO

40-42 -shy 5 40-42 ND ND

45-47 NO ND 45-47 ND NO

50-52 ND ND 50-52 ND NO

55-57 ND ND 55-57 NO ND

60-62 ND

-shy INDICATES THAT NO READING WAS TAKEN

3S 0-2 ND ND

5-7 ND ND ONLY PEAK CONCENTRATIONS ARE LISTED

10-12 ND ND

I | 15-17 I lt1 ND

I | 18-20 I lt1 2

The

significantly below the peak concentrations in the boring This concentration which is far below the solubility limit of the VOCs detected at the site would indicate that a Dense Non-Aqueous Phase Liquid (DNAPL) is not present above the clay layer at this location Based on these readings the well screen for EPxM-2S was set between 70 and 17 feet below grade

ERM-3S had minor detections between 15 and 20 feet below grade of 20 ppm or less ERM-4S had a trace detection at the 50 to 70 foot interval of less than 10 ppm Similarly concentrations of 30 ppm or less were detected between 50 and 12 feet below grade in ERM-5D

The Vermont unofficial unpublished guidelines for soil removal are based on RCPJV landban requirements The general guidance is to multiply the landban concentration by a factor of 20 In the absence of a landban value the MCL multiplied by a factor of 20 should be used For constituents at the site the following guidelines may be applicable

Consituent Remediation Guideline

111-trichloroethane 8200 ppb (landban-based)

trichloroethene 100 ppb (MCL-based)

chloroform 2000 ppb (MCL-based)

11-dichloroethene 140 ppb (MCL-based)

tetrachloroethene 100 ppb ( p r o p o s e d based)

MCL-

11-dichloroethane 1400 ppb (based on VT water quality guideline)

Since these guidelines are chemical-specific laboratory analyses of soil samples are necessary to determine soil remediation levels for the Tansitor site ERM did not submit any soil samples for laboratory analysis during this investigation although prior investigations included soil sampling and analysis in the disposal pit area (Appendix A)

Since a soil excavation or in-situ remediation would not normally extend below the water table the soil removal guidelines do not necessarily apply to samples collected below the water table Saturated contaminated sediments are generally addressed through a ground water remedial action

16 TtK

34 Hydroqeology and Water Quality

In order to assess potential impacts of the Tansitor disposal pit site EKM investigated ground and surface water conditions on and directly downgradient of the site As ground and surface water are interactive an analysis of both systems is necessary to assess potential migration of chemicals

For comparative purposes the Maximum Contaminant Levels (MCLs) used for defining drinking water quality are listed below for those chemicals present at the site

Parameter MCL (ppb)

11-dichloroethane 70 (VT guideline not an MCL) 11-dichloroethene 7 111-trichloroethane 200 trichloroethene 5 tetrachloroethene 5 (proposed MCL) chloroform 100 (total trihalomethanes)

341 Historical Water Quality

An extensive sampling history exists at the site since 1983 Although limited ground water sampling occurred primarily in nearby water supply wells a large volume of surface water quality data exists Unfortunately the surface water sampling locations were never standardized by staking locations in the field Therefore it is difficult to generate trends over time at specific locations The surface water sampling points should be considered approximate locations Appendix B contains a summary of all water samples collected at and near the Tansitor site

In terms of ground water quality results there has never been a detection of volatile organics in any of the residential water supply wells adjacent to the Tansitor site Only one sampling event (January 20 1984) indicated the possible presence of volatiles in the Tansitor tap water Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only detected once it is likely that this detection was a false positive or indicative of laboratory contamination Follow-up sampling to this investigation will address residential well water quality

17 The

Group

342 Surface Water Quality

Surface water quality results from the January 3 1989 event are summarized in Table 2 and historical data appear in Appendix B Sampling locations are shown on Figure 2 As indicated

sample S-3 is located northeast of the firepond

- sample S-7 is located at an outfall of a pipeline originating at the firepond before entering the perennial stream

samples S-ll and S-13 represent upgradient and downgradient locations respectively on the perennial stream south of Route 9 and

- sample S-16 is located at an upgradient point on the intermittent stream north of the facility

Sample S-3 had no detections of VOCs This result is different from past sampling events (Appendix B) where S-3 was the most contaminated of any of the surface water locations After discussions with VTDEC personnel it appears that the location of S-3 has varied in the past Therefore no accurate trends can be determined at this time

VOC concentrations were non-detectable in S-ll S-7 had a total of 142 ppb and S-13 had a total of 24 ppb Based on the location of sampling points it appears that chemicals are entering the stream downgradient of S-ll either from tributary surface water sources or from ground water discharge The Maximum Contaminant Level (MCL) for 11-dichloroethane (11-DCA) has not been defined however the unofficial Vermont drinking water guideline of 70 ppb was not exceeded The MCLs for 11shydichloroethene (11-DCE) and 11 1-trichloroethane (TCA) the other two chemicals detected in S-7 and S-13 were also not exceeded The MCLs are presented here for comparative purposes alone since the stream is not a likely source of drinking water

Sample S-16 collected from the on-site intermittent stream had a concentration of 16615 ppb of total volatiles which exceeds drinking water standards for all constituents detected This concentration may be due to ground water discharge from the slope north of the firepond some of which drains west into the intermittent stream The presence of tetrachloroethene (PCE) at 20 ppb which was not detected anywhere else at the site warrants further investigation in this area

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-P U (0 C

CN Pn

cu rH

X 03 EH

C c CU

CQ

D mdashraquo cn X

a 2 Pi M mdashshy

CO cn

D Q Q Q 2 2 2

Q Q 2 2

Q 2

(0 go cn o co cn ^r rH CN

row j CU -p -rH

2 O H

T3 Imdash

n T5 O

CO 0 5n -P

o 1 EH

^ (d CU 3 S

c 2 0 W bullj U mdashi 0)

in o c o

2 O U

CJ M 2

T

vl-^3CDr^ij

0) C

(0 x

i ]

CD (D C C O 0)

^~ j^

C (0j^ -P CU o cu gtH C

C O rH

rH

73 fl 0) -P 5n

-p u cu

pound Ocd Tj

CD

CD O H

-P -P CD CU

H 0

O 0) rH x x -P cn

OCU

O M-l

rH

W

SH

o W gt-J)

Q 2

bullH-H

bullH-P

O O - I 1 rH O

C X ^H o o x

UbullHj_iEH

0) Oj_i O

V

o o gt

O

O -H

W O -P -H

CO

M EH lt M

D O az

C

O3bullH

-H -rH

Q Q 1 1 rH rH

U

(t3 5H -P

1 rH

ltH r - U

rH -H

i_j ltC EH

M -H CU W rH gt

Si rH

c fO EH

O gt

o u

CD

shy -H

shy CU rH EH

- 5H rH EH

O EH

g (0 roc cn lt

343 Ground Water Flow and Direction

Figure 4 shows a water table map across the site Table 3 summarizes the water level data Ground water flow is locally towards the southeast at the site at a gradient of approximately 0065 ftft

Flow Rates

Using the natural range of values below and the modified Darcy equation the average linear velocity for the ground water in the overburden above the clay at the site is probably between 67 ftyr and 0027 ftyr

hydraulic conductivity 10~4 to 10~7 cmsec of till (K) (after Freeze amp Cherry

1979)

hydraulic gradient (i) 0065 ftft (calculated between

ERM-1S and -5S)

effective porosity (n) 10 to 25

v = (Ki)n

Although permeability (K) data were not obtained during this initial investigation a likely value of permeability is 10~4

cmsec with an effective porosity of 20 which would result in an average linear velocity of 34 ftyr for the upper till zone Field permeability testing is warranted to refine this estimate The more compact lower till likely has a lower permeability which would result in a lower average linear velocity which could restrict contaminant transport

In terms of a sensitivity analysis for the above equation velocity and effective porosity are inversely proportional Therefore a larger effective porosity would result in a slower average linear velocity A higher permeability would result in a higher velocity Applying these velocity estimates to contaminant transport must take into account dispersion and retardation effects

Vertical Gradients

At the time that ERM measured the water levels in the monitoring wells water in ERM-5D was frozen in the casing above ground level This is due to a high water level The depth to ice can not be directly correlated to depth to water in this well because of expansion effects however the difference is not

20

tennis courts

S-l 1 1 ntsrml ttsrjlt stream

perannial stream

_EGEND

Surfccs Water Samp1e

fanitor(ng Wei 1

Water Table Elevatlor ~t above MSL)

Water Taole Contours

D1rect1 on of G^ourcwator F 1 ov

SCALE (feet)

bull00 280 300 400

N

ERM i gare 4 New Engona ~c

Tensi tor E i e c ^ r c n i c s Inc

Genera i zed

vater Tao le E eva t ion Map

for Jani^arj 3 1989

WELL

ERM IS

ERM 2S

ERM 3S

ERM 4S

ERM 5S

ERM 5D

Table 3

WATER GAUGING AND SURVEY DATA

MP ELEVATION

ft above MSL

86029

84387

82262

81995

82238

82237

DEPTH TO

WATER

ft below MP

9 10

3 46

160

348

9 00

100

TOTAL DEPTH

ft below MP

1345

1980

1620

17 75

WATER TABLE ELEVATION

ft above MSL

851 19

84041

82102

81647

813 38

82137

All measurements made on January 3 1989 by ERM

Frozen plug prevented measurement Depth to ice

The

Group

likely to exceed a couple of inches The difference in the depth to ice in ERM-5D and the depth to water in ERM-5S is about eight feet This represents a strong upward vertical gradient especially since ERM-5S is screened between 6 and 16 feet below grade and EKM-5D is screened between 27 and 32 feet below grade

Although ERM-5S and -5D are screened in similar strata based on sediment texture the blow counts increased considerably beyond 15 feet below grade indicating a tighter zone as described earlier The increased compaction with depth and the upward vertical gradient would tend to hinder the downward migration of dissolved contaminants in this area Dissolved contaminant flow is probably concentrated in the upper till layer due to these combined factors

Because of the difference in density between water and organic solvents a vertical gradient alone would not prohibit the downward migration of a DNAPL As discussed earlier however there is currently no evidence to indicate the presence of a DNAPL

344 Ground Water Quality

Organics

Table 4 is a summary of volatile organic concentrations in ground water (as determined by the VTDEC laboratory) from the on-site monitoring wells installed by ERM Figure 5 shows the generalized TCA plume at the site Five solvent-related compounds from the EPA Method 624 suite of parameters were identified in the overburden at the site Well ERM-5D was frozen above ground at the time of sampling and therefore no data is available

Of the six compounds detected at the site several are likely breakdown products of the more prevalent contaminants TCA is known to break down abiotically to 11-DCE and through biodegradation to 11-DCA The kinetics of the reactions favor the formation of 11-DCA It is likely that the remaining constituents trichloroethene (TCE) tetrachloroethene (PCE) and chloroform are virgin chemicals

The upgradient and downgradient wells EPJM-1S and -5S both had non-detectable readings of volatile organic chemicals This would indicate that no additional sources of ground water contamination exist upgradient of the disposal pit Although the non-detectable reading in ERM-5S indicates that considerable attenuation of contaminants has occurred between the disposal pit and beyond the fire pond it does not necessarily demonstrate that ERM-5S is the furthest downgradient advance of contaminants in ground water It is possible that the leading edge of contamshy

23 Thlaquo

Group

- -

Oi CO

00 IT) 0)

1 Q Q Q Q Q Q 2 2 222 2

sect w

rH

CO

CO en 3 vO CN co i P Q Q CN Q CN c sect 2 2 2 o w

e gti O SH O

CO o CO ^3 O gtpoundgt (N in 4J T3

CO ^ Crt rH in rd CO n OJ ^f ltN en M |

1 p bullgt - O O sect CO CO X) CO

W rH 0)

O wu

gti 4-) EH Q rH

C H o O O O o EH C O 2 CO ^f 31 O CN o gt o g O 01 [ rT rH rH T-J

1 P Q shy -0) ^ s 2 r- rH U3 in

K O o W rH

EH -H CD shyc lt X M CO o gtiT3

rH C

Q Q) rfl 3 2 amp CO P

i Q Q Q Q Q Q Ecc

O 01 0) rH OS 4-1 2 2 2 2 2 2 T3 O

sect0) C UO UX) CQ

0)

w (0

CO CO

4-1 2 o C O

-X O 4-gt

0) O C ampH O

2 en 03 W rH 0) 3 u rd C C 2 (d

o O I] (U a) x -H O c C 4-1 C rd rd CO 0) o U 0) X x o cu 0) SH a 4-J 4-1 lH C 4-gt ^ 4-) 0) Q) O Q) U O O TJ O o rH x 0) 4-1

QJ ^ gtH X 4-1 CO bullH g O o o cu

W O 4-1 gtH rH rH -H O O O -H Q -H ox XI rH r-l O o 2 4-gt HH O U EH O gt Ul

O P C O -H bullH 1 rH V) bull- 4-1 0 Q) U Q Q H x j OJ CO -H EH a 73 O 1 1 ~ O lt rH gt1

Z -H rH (H cH rH -H EH CL rH 3 o c x - -bull - SH O g rt3

o o P O ltH rH (H EH EH tlaquo C gt CO lt

Ths

wate 1 i no

1 ntsrm 1 tts stream

perennial strsam

Surface Wcw2r~ Sample

N 100

Mom tor irg We I

TCA (ODD) D or nondetsctacia

t Cancentnac

ERM F -e o Sea 1e ( Fee t )

New Erg lard 1nc

00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

SUMMARY AND CONCLUSIONS

As part of this preliminary investigation ERM installed six monitoring wells at five locations Split spoon sediment samples were collected in borings at all five locations for determining geologic lithology and performing total Volatile Organic Compound (VOC) screening Ground water samples from the five shallow wells and surface water samples from five locations were collected for laboratory analysis These locations are shown on Figure 4 Results of previous investigations are summarized in Appendix A

Soil Quality

1 ERM obtained total VOC headspace readings using a portable HNU meter from all split spoon sediments No soil samples were delivered for laboratory confirmation and no soil samples were collected from the disposal pit for laboratory or HNU analysis during the recent investigation although previous investigations have analyzed soil samples at this location The split spoon screening results follow

ERM-1S only the surficial (0 to 2 foot deep) sample had a detection of VOCs (2 ppm)

ERM-2S almost all of the split spoon samples down to the clay layer (44 ft below grade) had detections of VOCs The clay layer appears to have inhibited further downward migration of VOCs The highest HNU readings were found in the upper till at up to 700 ppm

ERM-3S4S concentrations of 20 ppm or less were detected in a few shallow samples

ERM-5D low concentrations (30 ppm or less) were detected in the top 12 feet of sediments Only one sample in the lower till (30 to 32 feet below grade) had a detection (80 ppm)

2 Laboratory analyses of soil samples are necessary to estimate quantities of contaminated soil and to determine appropriate soil remediation levels for the Tansitor site

Surface Water Quality

1 Although VOCs are entering the perennial stream south of Route 9 none of the detections from the January 1989

I iv The

Group

sampling event exceed MCLs or Vermont drinking water guidelines The upgradient sample S-ll had non-detectable readings The downgradient sample S-13 indicated a significant decrease in VOC levels from the outfall at S-7 from 152 ppb to 24 ppb The concentration in S-7 is due to outflow from the firepond and possibly from the intermittent stream north of the facility In the past concentrations at S-7 have exceeded MCLs for 111shytrichloroethane (TCA) and 11-dichloroethene (11-DCE)

2 Sample S-16 taken from the on-site intermittent stream north of the manufacturing building had 16615 ppb of total VOCs This was over MCLs for all organic constituents detected including 1 1-dichloroethane (11-DCA) 11-DCE tetrachloroethene (PCE) TCA and trichloroethene (TCE)

3 No specific historical trends can be developed regarding surface water quality since the exact sampling points for specific stations at the site have varied ERM has specifically located some of the more critical sampling points so that all future sampling data are comparable

Ground Water Flow

1 Although no in-situ or laboratory permeability testing was performed three flow zones in the overburden have tentatively been identified These include an upper and lower till zone and a glacio-lacustrine clay layer Compaction increases with depth in the till which likely causes a lower permeability within the lower till zone

2 A strong upward vertical gradient has been identified at the ERM-5SD well pair This upward gradient would tend to keep dissolved contaminant flow in this area from migrating downward No flow information is available beneath the till including bedrock However it is likely that the gradient at the ERM-5SD well pair is caused by an upward gradient from bedrock or some other permeable zone(s) beneath the clay layer

Ground Water Quality

1 A summary of the January 1989 ground water quality results follow

ERM-1S5S no VOCs were detected in the furthest upgradient and downgradient wells at the site

The

Group

ERM-2S the concentration of total VOCsppb immediately downgradient of tpit and

was 105400 he disposal

ERM-3S4S the concentrations of total VOCsand 28 ppb respectively

were 8955

MCLs for all organic constituents detected in ERM-2S and -3S were exceeded Although a portion of the plume may be flowing to either side of the ERM-5SD well pair it is likely that the firepond is a significant discharge point for VOCs

Although no current data suggests the on-site migration of dissolved contaminants into bedrock insufficient data currently exists to conclusively determine whether contaminant transport into the bedrock aquifer where nearby water supply wells are screened could occur Some factors which if confirmed would reduce the potential for downward migration include

the continuity of the clay layer in the area of the plume

upward gradients from bedrock into the overburden sediments in the area of the plume

whether or not the stream and wetlands south of Route 9 represent a flow boundaryground water discharge zone and

- the significance and effectiveness of the firepond as an interceptor of the ground water plume

VOCs have never been detected in any nearby residential bedrock water supply wells Although VOCs were reported in low concentrations once in the on-site Tansitor water supply well follow-up sampling never confirmed these results Additional Tansitor and residential water supply well sampling is planned

VI

The

Group

RECOMMENDATIONS

Soil Quality

1 ERM recommends that a soil sampling program be developed for the disposal pit area and the area near ERM-1S to define the volume of contaminated soil potentially requiring remediation The purpose of this remediation would be to mitigate the effects of the disposal pit soils as a potential source area

Surface Water Quality

1 ERM recommends that quarterly sampling at specific surface water locations be performed to establish seasonal and long term trends in surface water quality This may help establish whether concentrations are diminishing over time

2 ERM recommends that hydrologic testing be performed on the perennial stream to determine whether it is in direct hydrologic contact with the underlying aquifer sediments These tests will help establish whether VOCs in the perennial stream are coming from ground or surface water discharge Tests should also be run to determine whether the water at S-7 comes from the firepond andor the intermittent stream

3 ERM recommends performing hydrologic and chemical testing in the area around S-16 to determine the source of water and contamination in the intermittent stream

Ground Water Flow

1 ERM recommends performing in-situ permeability testing on the overburden sediments to evaluate transport rates and to obtain pre-remedial design data Shelby tube sampling is also warranted in the clay to determine the hydraulic conductivity of that layer

2 To better assess vertical and horizontal gradients in deeper layers ERM recommends installing monitoring wells into bedrock for evaluating hydrogeochemical characteristics This is necessary to demonstrate whether or not the bedrock aquifer has been or could be impacted by disposal acitivites at the pit These additional wells are also recommended to better characterize the lateral and vertical extent of the clay layer

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3 ERM recommends additional testing to determine the regional flow patterns into the downgradient wetlands and the effectiveness of the wetlands as a ground water discharge zone andor flow boundary

Ground Water Quality

1 ERM recommends additional wells in the area of the firepond to delineate the lateral and vertical extent of the ground water plume Hydrologic and chemical testing of the firepond sediments should be performed to define the effect of ground water quality on these sediments

2 ERM recommends additional testing or analyses to evaluate retardation and fate of contaminants downgradient of the disposal pit and to determine hydrogeologic properties of the overburden aquifer to aid in the design of a ground water remedial action if appropriate This may include but not be limited to additional wells test borings water sampling and geophysics

Interim Remedial Action

1 Consideration should be given to implementing focused on-site ground water remedial actions after additional hydrogeological and geochemical testing to control and abate the discharge of contaminated ground water to the firepond and capture further contaminant migration from the disposal pit area These interim actions should be consistent with overall remedies that might prove to be required based on the results of the additional investigations as recommended above

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10 INTRODUCTION

11 Background

Tansitor Electronics Inc notified the United States Environmental Protection Agency (EPA) in May 1981 of potential contamination at the site to comply with CERCLA Section 103(c) This action began the National Contingency Plan (NCP) process of evaluating whether the site warranted action under the Comprehensive Environmental Response Compensation and Liability Act (CERCLA) The focus of the potential CERCLA response action is a 500 square foot disposal pit behind the Tansitor facility which received solvents and dilute acid solutions between sometime after 1956 and late 1978 or early 1979 A Preliminary Assessment (PA) was completed by the Vermont Agency of Environmental Conservation (now the VTDEC) in May 1984 The EPA completed a Site Inspection (SI) in January 1987 The Tansitor site was identified in the Federal Register as a proposed National Priorities List (NPL) site in June 1988

The EPA- and DEC- estimated volume of wastes released at the disposal pit has varied between 850 gallons (used in the HRS calculations) and 500 cubic yards (101000 gallons) Although no formal records exist Tansitor believes that the latter estimates contained in the PA and SI reports are misleading and inflated based on the following information

between 50 and 150 gallons per year of primarily dilute aqueous acidic solutions were released in the disposal pit over an approximately 17 year period and

111-trichloroethane (TCA) the predominant solvent detected at the site was not used until the mid-1970s and therefore was only released over an approximately five year period

Based on this information it is improbable that 500 cubic yards of waste were released at the disposal pit It is likely that the actual volume of solvents disposed of is closer to 500 gallons (based on 100 galsyear over five years)

Tansitor contacted ERM-New England Inc (ERM) in August 1988 to evaluate the EPAs Hazard Ranking Score (HRS) ERM identified several inaccurracies during this review which were brought to the attention of the EPA in a letter dated August 10 1989 and addressed to Stephen Lingle of the EPA from Tansitor ERM then prepared a workplan for a preliminary evaluation of the disposal pit area Tansitor approved this workplan in November 1988 This report presents results of the investigation outlined in this workplan

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Key components of ERMs investigation included

compilation of a detailed site history based on correspondence between Tansitor VTDEC and EPA personnel This compilation is attached as Appendix A

compilation of a related summary of historical water quality data for the site for the period between 1983 and 1988 which is included as Appendix B to this report and

- installation and sampling of monitoring wells and preparation of well logs in Appendix C

12 Purpose and Scope

The purpose of the investigation was to

1 determine the type and amounts of chemicals disposed in the disposal pit on the northern side of the site

2 obtain information to aid in evaluating the vertical and lateral extent of Volatile Organic Compounds (VOCs)

in ground and surface water and

3 evaluate on a preliminary basis the potential environmental risks associated with the disposal pit

The scope of work is intended to provide a preliminary characterization of site contamination downgradient of the

disposal pit and is not intended to fully characterize the site No other areas on site were evaluated Additional studies may be

necessary to completely evaluate soil and ground water quality at the site

ERMs November 1988 workplan identified a fourth purpose which was to characterize VOCs in the pit area The proposed location of ERM-2S in the pit area which would have addressed this purpose was altered after discussions with Tansitor personnel Since a soil remediation activity in the pit area is a probable outcome the location of ERM-2S was moved to a position downgradient of the pit so as not to be destroyed if soil is removed as part of a remedial activity

ERM contracted Alceon Corporation to evaluate the current data base relative to public health and environmental risk Due to the limited data available the preliminary evaluation of risk

was inconclusive Additional sampling events will address data gaps identified during this evaluation 1

A brief summary of the work scope follows ERM performed the following seven tasks to accomplish the goals of this investigation

Task 1 Task 2 Task 3 Task 4 Task 5 Task 6 Task 7

Review Existing Records Prepare a Health and Safety Plan Install Monitoring Wells Collect Samples and Survey Compile and Analyze Data Prepare Report Project Management

Results of this investigation do not include design of any remedial measures engineering cost estimates or comprehensive evaluation of potential risks

13 Site Description

Tansitor Electronics Inc is a manufacturer of electronic capacitors The Tansitor property is approximately 36 acres in size located in the Town of Bennington Vermont The site is in

91 the southwestern part of the state approximately 10 miles north of the Massachusetts border and approximately 06 miles east of the New York border (Figure 1)

The Tansitor property consists of the main manufacturing facility offices etch house parking areas open land and fire pond (Figure 2) The disposal pit lies approximately 400 feet upslope of the manufacturing building at an elevation of approximately 850 feet above Mean Sea Level (MSL) The firepond is 100 feet east of the manufacturing building and approximately 300 feet south of the disposal pit The firepond lies at the base of the slope below the disposal pit at an elevation of approximately 815 feet above MSL This pond serves as the primary source of water for the Bennington Fire Department during fires located west of Bennington

The surrounding area east and west of the site is primarily ruralresidential All of the nearby residents use ground water from the bedrock aquifer as their sole water source Whipstock Hill rises north of (behind) the facility A wetland exists on Tansitor property south of Route 9 in a stream valley which drains to the west An unnamed hill rises over 1900 feet above MSL south of the wetlands

The facility is over thirty years old and currently employs 184 people in the manufacture of tantalum electrolytic capacitors and chip type solid tantalum capacitors Production operations include

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- pressing of tantalum powder into pellets (anodes or cathodes)

- sintering in vacuum furnaces and anodizing the pellets using highly diluted solutions of nitric sulfuric and phosphoric acids and glycol

assembling the anodes and cathodes in tantalum silver or aluminum cases and

Completion of these assemblies using various welding technigues and custom built machinery

The electronic capacitors manufactured by Tansitor consist mainly of silver tantalum and palladium metals The process wastes generated from the manufacturing of these capacitors include metal plating solutions cleaning solvents degreasers and dilute acidcaustic solutions

The EPA has estimated that between 50 and 150 gallons per year of these wastes were disposed in an unlined disposal pit north of the facility between sometime after 1956 and late 1978 or early 1979 However chlorinated organic solvents primarily 111-trichloroethane were not used or disposed at the site until the mid-1970s

Ground water seeps discharge from the base of the slope south (downgradient) of the disposal pit Historical sampling in this area has shown elevated readings of VOCs The firepond at the base of the slope receives ground water discharge and has likewise been determined to contain elevated levels of VOCs The primary VOCs detected at the site to date have been 111-shytrichloroethane (TCA) and related chlorinated solvents

A detailed site history based on ERMs interviews and records review is presented in Appendix A

20 Methodology

The methodology used was in conformance to ASTM and EPA guidance documents ERM installed six monitoring wells and collected ground and surface water and soil samples during the winter of 198889 Field screening for VOCs was conducted on the split spoon soil samples from the soil borings No soil samples were delivered to a laboratory for analysis

ERM delivered water samples collected on January 3 1989 to Eastern Analytical Laboratories Inc of North Billerica Massachusetts for analysis (the resulting data were later shown to be invalid and thus were not used) VTDEC personnel delivered split water samples to the VTDEC laboratory for analysis The split VTDEC data are discussed exclusively in this report

Water samples were taken from two sources

ground water samples from the five shallow monitoring wells and

surface water samples from five historical sampling points

21 Monitoring Well Installations

211 Locations

Six wells were installed in five locations on the Tansitor Property (Figure 2) Well numbers followed by an S indicate a shallow overburden well with total depth less than 20 feet and well numbers followed by a D indicate deep overburden wells completed above the glacio-lacustrine clay layer

Well Location Purpose

ERM-1S About 75 north of Intended to be for background the disposal pit concentrations

ERM-2S About 150 south- Assess localized contaminant southwest of the transport and vertical disposal site distribution in the soil

ERM-3S Downgradient of pit Evaluate potential flow around at northeast corner the eastern side of the fire of the fire pond pond

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ERM-4S About 400 south ofERM-2S at the northwest

Evaluate potential flow around the western side of the fire

corner of the fire pond pond

EKM-5S Southeast side offire pond

To assess shallow transport beyond the fire pond and

vertical flow

ERM-5D Southeast side of To assess deep transport fire pond underneath the fire pond

and vertical flow

212 Drilling Methodology

ERM subcontracted with CATOH Environmental Companies Inc of Albany NY for drilling services Several different drilling methods were used depending upon the soil type and total well depth Precautions were taken to assure that no cross contamination between aquifers occurred during drilling A Mobile B-61 Drill Rig capable of both rotary and hollow stem auger drilling was used Appendix C includes detailed drilling logs graphic logs and well construction diagrams

Well ERM-1S was drilled to a depth of 17 feet and wells ERM-3S 4S and 5S were drilled to 18 feet deep using 425 inch ID hollow stem augers

Well ERM-2S was begun using 625 inch inner diameter (ID) hollow stem augers (HSA) An increase in soil compaction required a change to rotary drilling at a depth of 34 feet Air rotary with a nominal six inch diameter tricone bit was used from 34 to 39 feet below ground surface Sand began to clog the bit at a depth of 39 feet Nominal four inch diameter steel casing was driven to 39 feet and the drilling method was changed to wash rotary with a nominal four inch diameter tricone bit The casing kept the sand from caving into the boring and sealed off the potentially contaminated soils above 39 feet from the deeper soils Wash rotary drilling was continued until the final boring depth 60 feet was achieved This boring was filled up to 19 feet below grade with bentonite to complete the well in the most contaminated zone based on the field screening of split spoon sediments

Monitoring well ERM-5D was drilled with 625 inch ID HSA to a depth of 20 feet An increase in soil density required a change in drilling method to wash rotary using a nominal four inch diameter tricone bit At a depth of 37 feet sand began to fill the boring and nominal four inch diameter steel casing was driven to a depth of 35 feet As with well ERM-2S the casing isolated the surface sediments The final depth of this boring was 57 feet however the boring was backfilled with bentonite up to 34 feet below grade above which the well was completed

213 Soil Sampling and Analysis

ERM performed standard split spoon sampling in accordance with ASTM standards (at intervals of five feet) in all soil borings during drilling An ERM hydrogeologist logged all samples describing all lithologic variations Samples were then stored in glass jars covered with aluminum foil capped and labelled Name of sample date time depth and blowcounts are labelled on each jar

ERM screened soil samples via headspace analysis using a portable field detector for organic vapors Either a photoionization detector (HNU PI-101) or a flame ionization detector (Foxboro Instruments OVA Model 128) was used In most cases organic vapors were measured both when the split spoon was opened and 24 hours later The 24 hour measurement is taken from the headspace by puncturing the aluminum foil in the sample jar after the sample is allowed to equilibrate at room temperature No soil samples were delivered to a laboratory for analysis

214 Well Construction

Following completion of the borings to total depth a one to two foot thick sandpack was added as a foundation for the well casing and to prevent the clogging of the screen with fine material from the formation In ERM-2S and -5D bentonite was used to fill in the borings from 60 to 19 feet below grade and 57 to 34 feet below grade respectively prior to the addition of the sandpack This was done so that the well screens could be set in the zone of highest contamination based on field screening

Two-inch diameter 0020 inch slot 304 stainless steel screen and riser were used for well construction Five feet of slotted screen was used in ERM-5D Ten feet of slotted screen was used in each of the shallow overburden wells Stainless steel centralizers were used in all wells to ensure that the screen was vertical and that the well was located in the center of the boring

The sandpack was deposited around the screened interval and extended approximately two feet above the top of the screen A bentonite pellet layer was then deposited above the sandpack to form a two-to-five foot seal A bentonite-cement grout was used to seal the remainder of the boring The top three to five feet of the boring consisted of Portland cement to provide a strong foundation for a protective steel casing The stainless steel risers protrude approximately two feet above the ground surface The protective casings are secured with locking caps

CATOH Environmental developed the wells following completion by pumping water from the well until the water became clear

22 Surveying Gauging and Collecting Water Samples

ERM subcontracted Gerald E Morrissey Inc of Bennington Vermont to survey all monitoring well locations at the site to a US Coast amp Geodetic Survey datum Elevations at the ground surface the top of the outer well casing and the top inner stainless steel pipe casing were measured

Prior to any ground water sampling an ERM hydrogeologist measured static water levels to the nearest one-hundredth of a foot The water in ERM-5D was frozen but a measurement was taken to the top of the ice Total depth was measured in all wells but ERM-5D and -3S A plug of ice prohibited measurement of total depth in ERM-3S

An ERM hydrogeologist evacuated at least three well volumes of water from the wells using dedicated bottom filling PVC bailers VTDEC personnel then collected samples for analysis of volatile organics by EPA Method 601602 In addition the Vermont DEC collected samples for analysis of priority pollutant metals

Surface water samples were collected by submersing vials and jars in the streams as designated on Figure 2 Analysis of surface water samples was identical to that of ground water samples

ERM collected samples which were delivered to Eastern Analytical Laboratories Inc (EAL) of North Billerica Massachusetts Because of maintenance being performed on EALs GCMS the samples were delivered to Toxicon Laboratories of Woburn Massachusetts The resulting data were determined by ERM to be invalid due to poor intralab chain-of-custody protocols at Toxicon and inconsistencies in laboratory procedures by Toxicon personnel

30 RESULTS AND DISCUSSION

3 1 Physiography and Regional Geology

The Tansitor site is in the southwestern corner of Vermont (Figure 1) in the Taconic Range This area is in the Hudson River basin The site is at the southern base of Whipstock Hill approximately 35 miles west of the center of Bennington Vermont An unnamed hill lies directly south across the valley

The geology of the vicinity is characterized by an overburden of glacial materials underlain by Walloomsic Slate No bedrock outcrops were observed on site The valley in which Tansitor is located was part of a glacial lake when recessional moraines blocked the valley drainage to the west A glacioshylacustrine clay deposit formed in the lake bottom and was later covered with till The extent of this clay is not well-documented in the literature

It is unclear whether this clay layer is continuous across the valley and whether it would act as an effective barrier to downward migration of contaminants into the bedrock ag_uifer The EPAs Site Inspection report states that the depth to bedrock (slate) at the Severs1 property 600 feet west of the site is 80 feet which if correct would indicate the absence of an effective clay layer at that location However if the wetlands or stream south of Route 9 represent a ground water discharge zone the presence of a limited on-site clay layer could prevent migration of contaminants into the bedrock These issues will be resolved in future investigations

The topographic slope is to the southeast An unnamed perennial stream is located across Route 9 from the site and flows towards the southwest for about 05 miles before entering Browns Brook which flows west about four miles before entering the Hoosic River An intermittent stream begins near the northeastern corner of the main building and joins the perennial stream in the wetland south of the site

3 2 Site Geology

The overburden at the Tansitor site consists of glacial tills and glacio-lacustrine clays Figure 3a shows the location of an on-site cross-section Figure 3b is a generalized cross-section for the site The till matrix is primarily mixed clays and silts with up to 40 percent sand and gravel In general till compaction increases with depth and with an increase in clay content The exact thickness of the overburden is unknown Sorption of contaminants onto the overburden sediments is likely enhanced by the high clay content of the till which could retard the movement of the contaminants

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A compact orange silty clay of glacio-lacustrine origin was found in both ERM-2S and ERM-5D at respective depths of 44 and 50 feet below grade (798 and 770 feet above Mean Sea Level) The thickness of this layer is a minimum of seven feet at ERM-5D and a minimum of 18 feet at ERM-2S (both borings were halted before the clays were completely penetrated) The other shallow wells were not advanced deep enough to intercept the clay layer

Within the till layer in ERM-2S and -5D a significant increase in the number of blow counts occurred at 10 and 15 feet respectively This reflects an increase in sediment compaction at these depths Since the sediment texture is the same above and below these intervals it is likely that the upper layer represents disturbed sediments possibly a collapse or slump structure

A lens of gray clay was found between 10 and 12 feet below ground level in ERM-4S The degree to which this may act as an impermeable barrier depends in part on the lateral extent of the clay lens

Both ERM-4S and -5D have seams of fine sand bedded with the silty clays At ERM-2S a three foot diameter boulder was intersected

Bedrock was not encountered in any of the borings Contrary to prior reports bedrock does not appear to outcrop in the immediate vicinity of the disposal pit The only bedrock outcrops observed were on the northern side of Whipstock Hill far upgradient of the site

3 3 Soil Quality

Previous soil sampling by Tansitor in the disposal pit area is described in Appendix A No additional sampling in this area was performed by ERM Results of ERMs field screening of split spoon soil samples are shown in Table 1 As indicated only one sample at the zero to 20 foot depth from the ERM-1S boring had a detection using an HNU meter The reading of 20 ppm could be due to the moisture content of the soil or the presence of VOCs Only laboratory or other more accurate analysis could confirm the presence of VOCs Future soil sampling in the disposal pit area should address this issue

In boring ERM-2S all samples between 50 and 44 feet below grade had detections of volatile organics The highest concentrations in this boring were detected between 50 and 12 feet below ground level (up to 700 ppm) At 44 feet below grade a tight clay was encountered and no volatiles were detected below this point The spoon collected above the clay layer at 40 to 42 feet below grade had a concentration of 50 ppm which is

14

Table 1

Results of Field Screening of Split Spoon Sediments

(ppm)

24 HOUR 24 HOUR

WELL NO DEPTH ON SITE HEADSPACE WELL NO DEPTH ON SITE HEADSPACE

1S 0-2 2 4S 0-2 ND ND

5-7 ND ND 5-7 lt1 ND

10-12 ND ND 10-12 ND ND

15-17 ND ND 15-17 ND ND

18-20 ND ND

2S 0-2 ND

5-7 -shy gt100 5D 0-2 ND

10-12 -shy 700 5-7 -- 3

15-17 -shy 85 10-12 -- 1

20-22 -shy 4 15-17 NO ND

25-27 -shy 6 20-22 ND ND

30-32 -shy 10 25-27 NO ND

325-34 -shy 65 30-32 80 ND

39-40 -shy 30 35-37 ND NO

40-42 -shy 5 40-42 ND ND

45-47 NO ND 45-47 ND NO

50-52 ND ND 50-52 ND NO

55-57 ND ND 55-57 NO ND

60-62 ND

-shy INDICATES THAT NO READING WAS TAKEN

3S 0-2 ND ND

5-7 ND ND ONLY PEAK CONCENTRATIONS ARE LISTED

10-12 ND ND

I | 15-17 I lt1 ND

I | 18-20 I lt1 2

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significantly below the peak concentrations in the boring This concentration which is far below the solubility limit of the VOCs detected at the site would indicate that a Dense Non-Aqueous Phase Liquid (DNAPL) is not present above the clay layer at this location Based on these readings the well screen for EPxM-2S was set between 70 and 17 feet below grade

ERM-3S had minor detections between 15 and 20 feet below grade of 20 ppm or less ERM-4S had a trace detection at the 50 to 70 foot interval of less than 10 ppm Similarly concentrations of 30 ppm or less were detected between 50 and 12 feet below grade in ERM-5D

The Vermont unofficial unpublished guidelines for soil removal are based on RCPJV landban requirements The general guidance is to multiply the landban concentration by a factor of 20 In the absence of a landban value the MCL multiplied by a factor of 20 should be used For constituents at the site the following guidelines may be applicable

Consituent Remediation Guideline

111-trichloroethane 8200 ppb (landban-based)

trichloroethene 100 ppb (MCL-based)

chloroform 2000 ppb (MCL-based)

11-dichloroethene 140 ppb (MCL-based)

tetrachloroethene 100 ppb ( p r o p o s e d based)

MCL-

11-dichloroethane 1400 ppb (based on VT water quality guideline)

Since these guidelines are chemical-specific laboratory analyses of soil samples are necessary to determine soil remediation levels for the Tansitor site ERM did not submit any soil samples for laboratory analysis during this investigation although prior investigations included soil sampling and analysis in the disposal pit area (Appendix A)

Since a soil excavation or in-situ remediation would not normally extend below the water table the soil removal guidelines do not necessarily apply to samples collected below the water table Saturated contaminated sediments are generally addressed through a ground water remedial action

16 TtK

34 Hydroqeology and Water Quality

In order to assess potential impacts of the Tansitor disposal pit site EKM investigated ground and surface water conditions on and directly downgradient of the site As ground and surface water are interactive an analysis of both systems is necessary to assess potential migration of chemicals

For comparative purposes the Maximum Contaminant Levels (MCLs) used for defining drinking water quality are listed below for those chemicals present at the site

Parameter MCL (ppb)

11-dichloroethane 70 (VT guideline not an MCL) 11-dichloroethene 7 111-trichloroethane 200 trichloroethene 5 tetrachloroethene 5 (proposed MCL) chloroform 100 (total trihalomethanes)

341 Historical Water Quality

An extensive sampling history exists at the site since 1983 Although limited ground water sampling occurred primarily in nearby water supply wells a large volume of surface water quality data exists Unfortunately the surface water sampling locations were never standardized by staking locations in the field Therefore it is difficult to generate trends over time at specific locations The surface water sampling points should be considered approximate locations Appendix B contains a summary of all water samples collected at and near the Tansitor site

In terms of ground water quality results there has never been a detection of volatile organics in any of the residential water supply wells adjacent to the Tansitor site Only one sampling event (January 20 1984) indicated the possible presence of volatiles in the Tansitor tap water Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only detected once it is likely that this detection was a false positive or indicative of laboratory contamination Follow-up sampling to this investigation will address residential well water quality

17 The

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342 Surface Water Quality

Surface water quality results from the January 3 1989 event are summarized in Table 2 and historical data appear in Appendix B Sampling locations are shown on Figure 2 As indicated

sample S-3 is located northeast of the firepond

- sample S-7 is located at an outfall of a pipeline originating at the firepond before entering the perennial stream

samples S-ll and S-13 represent upgradient and downgradient locations respectively on the perennial stream south of Route 9 and

- sample S-16 is located at an upgradient point on the intermittent stream north of the facility

Sample S-3 had no detections of VOCs This result is different from past sampling events (Appendix B) where S-3 was the most contaminated of any of the surface water locations After discussions with VTDEC personnel it appears that the location of S-3 has varied in the past Therefore no accurate trends can be determined at this time

VOC concentrations were non-detectable in S-ll S-7 had a total of 142 ppb and S-13 had a total of 24 ppb Based on the location of sampling points it appears that chemicals are entering the stream downgradient of S-ll either from tributary surface water sources or from ground water discharge The Maximum Contaminant Level (MCL) for 11-dichloroethane (11-DCA) has not been defined however the unofficial Vermont drinking water guideline of 70 ppb was not exceeded The MCLs for 11shydichloroethene (11-DCE) and 11 1-trichloroethane (TCA) the other two chemicals detected in S-7 and S-13 were also not exceeded The MCLs are presented here for comparative purposes alone since the stream is not a likely source of drinking water

Sample S-16 collected from the on-site intermittent stream had a concentration of 16615 ppb of total volatiles which exceeds drinking water standards for all constituents detected This concentration may be due to ground water discharge from the slope north of the firepond some of which drains west into the intermittent stream The presence of tetrachloroethene (PCE) at 20 ppb which was not detected anywhere else at the site warrants further investigation in this area

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343 Ground Water Flow and Direction

Figure 4 shows a water table map across the site Table 3 summarizes the water level data Ground water flow is locally towards the southeast at the site at a gradient of approximately 0065 ftft

Flow Rates

Using the natural range of values below and the modified Darcy equation the average linear velocity for the ground water in the overburden above the clay at the site is probably between 67 ftyr and 0027 ftyr

hydraulic conductivity 10~4 to 10~7 cmsec of till (K) (after Freeze amp Cherry

1979)

hydraulic gradient (i) 0065 ftft (calculated between

ERM-1S and -5S)

effective porosity (n) 10 to 25

v = (Ki)n

Although permeability (K) data were not obtained during this initial investigation a likely value of permeability is 10~4

cmsec with an effective porosity of 20 which would result in an average linear velocity of 34 ftyr for the upper till zone Field permeability testing is warranted to refine this estimate The more compact lower till likely has a lower permeability which would result in a lower average linear velocity which could restrict contaminant transport

In terms of a sensitivity analysis for the above equation velocity and effective porosity are inversely proportional Therefore a larger effective porosity would result in a slower average linear velocity A higher permeability would result in a higher velocity Applying these velocity estimates to contaminant transport must take into account dispersion and retardation effects

Vertical Gradients

At the time that ERM measured the water levels in the monitoring wells water in ERM-5D was frozen in the casing above ground level This is due to a high water level The depth to ice can not be directly correlated to depth to water in this well because of expansion effects however the difference is not

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Surfccs Water Samp1e

fanitor(ng Wei 1

Water Table Elevatlor ~t above MSL)

Water Taole Contours

D1rect1 on of G^ourcwator F 1 ov

SCALE (feet)

bull00 280 300 400

N

ERM i gare 4 New Engona ~c

Tensi tor E i e c ^ r c n i c s Inc

Genera i zed

vater Tao le E eva t ion Map

for Jani^arj 3 1989

WELL

ERM IS

ERM 2S

ERM 3S

ERM 4S

ERM 5S

ERM 5D

Table 3

WATER GAUGING AND SURVEY DATA

MP ELEVATION

ft above MSL

86029

84387

82262

81995

82238

82237

DEPTH TO

WATER

ft below MP

9 10

3 46

160

348

9 00

100

TOTAL DEPTH

ft below MP

1345

1980

1620

17 75

WATER TABLE ELEVATION

ft above MSL

851 19

84041

82102

81647

813 38

82137

All measurements made on January 3 1989 by ERM

Frozen plug prevented measurement Depth to ice

The

Group

likely to exceed a couple of inches The difference in the depth to ice in ERM-5D and the depth to water in ERM-5S is about eight feet This represents a strong upward vertical gradient especially since ERM-5S is screened between 6 and 16 feet below grade and EKM-5D is screened between 27 and 32 feet below grade

Although ERM-5S and -5D are screened in similar strata based on sediment texture the blow counts increased considerably beyond 15 feet below grade indicating a tighter zone as described earlier The increased compaction with depth and the upward vertical gradient would tend to hinder the downward migration of dissolved contaminants in this area Dissolved contaminant flow is probably concentrated in the upper till layer due to these combined factors

Because of the difference in density between water and organic solvents a vertical gradient alone would not prohibit the downward migration of a DNAPL As discussed earlier however there is currently no evidence to indicate the presence of a DNAPL

344 Ground Water Quality

Organics

Table 4 is a summary of volatile organic concentrations in ground water (as determined by the VTDEC laboratory) from the on-site monitoring wells installed by ERM Figure 5 shows the generalized TCA plume at the site Five solvent-related compounds from the EPA Method 624 suite of parameters were identified in the overburden at the site Well ERM-5D was frozen above ground at the time of sampling and therefore no data is available

Of the six compounds detected at the site several are likely breakdown products of the more prevalent contaminants TCA is known to break down abiotically to 11-DCE and through biodegradation to 11-DCA The kinetics of the reactions favor the formation of 11-DCA It is likely that the remaining constituents trichloroethene (TCE) tetrachloroethene (PCE) and chloroform are virgin chemicals

The upgradient and downgradient wells EPJM-1S and -5S both had non-detectable readings of volatile organic chemicals This would indicate that no additional sources of ground water contamination exist upgradient of the disposal pit Although the non-detectable reading in ERM-5S indicates that considerable attenuation of contaminants has occurred between the disposal pit and beyond the fire pond it does not necessarily demonstrate that ERM-5S is the furthest downgradient advance of contaminants in ground water It is possible that the leading edge of contamshy

23 Thlaquo

Group

- -

Oi CO

00 IT) 0)

1 Q Q Q Q Q Q 2 2 222 2

sect w

rH

CO

CO en 3 vO CN co i P Q Q CN Q CN c sect 2 2 2 o w

e gti O SH O

CO o CO ^3 O gtpoundgt (N in 4J T3

CO ^ Crt rH in rd CO n OJ ^f ltN en M |

1 p bullgt - O O sect CO CO X) CO

W rH 0)

O wu

gti 4-) EH Q rH

C H o O O O o EH C O 2 CO ^f 31 O CN o gt o g O 01 [ rT rH rH T-J

1 P Q shy -0) ^ s 2 r- rH U3 in

K O o W rH

EH -H CD shyc lt X M CO o gtiT3

rH C

Q Q) rfl 3 2 amp CO P

i Q Q Q Q Q Q Ecc

O 01 0) rH OS 4-1 2 2 2 2 2 2 T3 O

sect0) C UO UX) CQ

0)

w (0

CO CO

4-1 2 o C O

-X O 4-gt

0) O C ampH O

2 en 03 W rH 0) 3 u rd C C 2 (d

o O I] (U a) x -H O c C 4-1 C rd rd CO 0) o U 0) X x o cu 0) SH a 4-J 4-1 lH C 4-gt ^ 4-) 0) Q) O Q) U O O TJ O o rH x 0) 4-1

QJ ^ gtH X 4-1 CO bullH g O o o cu

W O 4-1 gtH rH rH -H O O O -H Q -H ox XI rH r-l O o 2 4-gt HH O U EH O gt Ul

O P C O -H bullH 1 rH V) bull- 4-1 0 Q) U Q Q H x j OJ CO -H EH a 73 O 1 1 ~ O lt rH gt1

Z -H rH (H cH rH -H EH CL rH 3 o c x - -bull - SH O g rt3

o o P O ltH rH (H EH EH tlaquo C gt CO lt

Ths

wate 1 i no

1 ntsrm 1 tts stream

perennial strsam

Surface Wcw2r~ Sample

N 100

Mom tor irg We I

TCA (ODD) D or nondetsctacia

t Cancentnac

ERM F -e o Sea 1e ( Fee t )

New Erg lard 1nc

00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

sampling event exceed MCLs or Vermont drinking water guidelines The upgradient sample S-ll had non-detectable readings The downgradient sample S-13 indicated a significant decrease in VOC levels from the outfall at S-7 from 152 ppb to 24 ppb The concentration in S-7 is due to outflow from the firepond and possibly from the intermittent stream north of the facility In the past concentrations at S-7 have exceeded MCLs for 111shytrichloroethane (TCA) and 11-dichloroethene (11-DCE)

2 Sample S-16 taken from the on-site intermittent stream north of the manufacturing building had 16615 ppb of total VOCs This was over MCLs for all organic constituents detected including 1 1-dichloroethane (11-DCA) 11-DCE tetrachloroethene (PCE) TCA and trichloroethene (TCE)

3 No specific historical trends can be developed regarding surface water quality since the exact sampling points for specific stations at the site have varied ERM has specifically located some of the more critical sampling points so that all future sampling data are comparable

Ground Water Flow

1 Although no in-situ or laboratory permeability testing was performed three flow zones in the overburden have tentatively been identified These include an upper and lower till zone and a glacio-lacustrine clay layer Compaction increases with depth in the till which likely causes a lower permeability within the lower till zone

2 A strong upward vertical gradient has been identified at the ERM-5SD well pair This upward gradient would tend to keep dissolved contaminant flow in this area from migrating downward No flow information is available beneath the till including bedrock However it is likely that the gradient at the ERM-5SD well pair is caused by an upward gradient from bedrock or some other permeable zone(s) beneath the clay layer

Ground Water Quality

1 A summary of the January 1989 ground water quality results follow

ERM-1S5S no VOCs were detected in the furthest upgradient and downgradient wells at the site

The

Group

ERM-2S the concentration of total VOCsppb immediately downgradient of tpit and

was 105400 he disposal

ERM-3S4S the concentrations of total VOCsand 28 ppb respectively

were 8955

MCLs for all organic constituents detected in ERM-2S and -3S were exceeded Although a portion of the plume may be flowing to either side of the ERM-5SD well pair it is likely that the firepond is a significant discharge point for VOCs

Although no current data suggests the on-site migration of dissolved contaminants into bedrock insufficient data currently exists to conclusively determine whether contaminant transport into the bedrock aquifer where nearby water supply wells are screened could occur Some factors which if confirmed would reduce the potential for downward migration include

the continuity of the clay layer in the area of the plume

upward gradients from bedrock into the overburden sediments in the area of the plume

whether or not the stream and wetlands south of Route 9 represent a flow boundaryground water discharge zone and

- the significance and effectiveness of the firepond as an interceptor of the ground water plume

VOCs have never been detected in any nearby residential bedrock water supply wells Although VOCs were reported in low concentrations once in the on-site Tansitor water supply well follow-up sampling never confirmed these results Additional Tansitor and residential water supply well sampling is planned

VI

The

Group

RECOMMENDATIONS

Soil Quality

1 ERM recommends that a soil sampling program be developed for the disposal pit area and the area near ERM-1S to define the volume of contaminated soil potentially requiring remediation The purpose of this remediation would be to mitigate the effects of the disposal pit soils as a potential source area

Surface Water Quality

1 ERM recommends that quarterly sampling at specific surface water locations be performed to establish seasonal and long term trends in surface water quality This may help establish whether concentrations are diminishing over time

2 ERM recommends that hydrologic testing be performed on the perennial stream to determine whether it is in direct hydrologic contact with the underlying aquifer sediments These tests will help establish whether VOCs in the perennial stream are coming from ground or surface water discharge Tests should also be run to determine whether the water at S-7 comes from the firepond andor the intermittent stream

3 ERM recommends performing hydrologic and chemical testing in the area around S-16 to determine the source of water and contamination in the intermittent stream

Ground Water Flow

1 ERM recommends performing in-situ permeability testing on the overburden sediments to evaluate transport rates and to obtain pre-remedial design data Shelby tube sampling is also warranted in the clay to determine the hydraulic conductivity of that layer

2 To better assess vertical and horizontal gradients in deeper layers ERM recommends installing monitoring wells into bedrock for evaluating hydrogeochemical characteristics This is necessary to demonstrate whether or not the bedrock aquifer has been or could be impacted by disposal acitivites at the pit These additional wells are also recommended to better characterize the lateral and vertical extent of the clay layer

Vll

The

Group

3 ERM recommends additional testing to determine the regional flow patterns into the downgradient wetlands and the effectiveness of the wetlands as a ground water discharge zone andor flow boundary

Ground Water Quality

1 ERM recommends additional wells in the area of the firepond to delineate the lateral and vertical extent of the ground water plume Hydrologic and chemical testing of the firepond sediments should be performed to define the effect of ground water quality on these sediments

2 ERM recommends additional testing or analyses to evaluate retardation and fate of contaminants downgradient of the disposal pit and to determine hydrogeologic properties of the overburden aquifer to aid in the design of a ground water remedial action if appropriate This may include but not be limited to additional wells test borings water sampling and geophysics

Interim Remedial Action

1 Consideration should be given to implementing focused on-site ground water remedial actions after additional hydrogeological and geochemical testing to control and abate the discharge of contaminated ground water to the firepond and capture further contaminant migration from the disposal pit area These interim actions should be consistent with overall remedies that might prove to be required based on the results of the additional investigations as recommended above

Vlll

Group

10 INTRODUCTION

11 Background

Tansitor Electronics Inc notified the United States Environmental Protection Agency (EPA) in May 1981 of potential contamination at the site to comply with CERCLA Section 103(c) This action began the National Contingency Plan (NCP) process of evaluating whether the site warranted action under the Comprehensive Environmental Response Compensation and Liability Act (CERCLA) The focus of the potential CERCLA response action is a 500 square foot disposal pit behind the Tansitor facility which received solvents and dilute acid solutions between sometime after 1956 and late 1978 or early 1979 A Preliminary Assessment (PA) was completed by the Vermont Agency of Environmental Conservation (now the VTDEC) in May 1984 The EPA completed a Site Inspection (SI) in January 1987 The Tansitor site was identified in the Federal Register as a proposed National Priorities List (NPL) site in June 1988

The EPA- and DEC- estimated volume of wastes released at the disposal pit has varied between 850 gallons (used in the HRS calculations) and 500 cubic yards (101000 gallons) Although no formal records exist Tansitor believes that the latter estimates contained in the PA and SI reports are misleading and inflated based on the following information

between 50 and 150 gallons per year of primarily dilute aqueous acidic solutions were released in the disposal pit over an approximately 17 year period and

111-trichloroethane (TCA) the predominant solvent detected at the site was not used until the mid-1970s and therefore was only released over an approximately five year period

Based on this information it is improbable that 500 cubic yards of waste were released at the disposal pit It is likely that the actual volume of solvents disposed of is closer to 500 gallons (based on 100 galsyear over five years)

Tansitor contacted ERM-New England Inc (ERM) in August 1988 to evaluate the EPAs Hazard Ranking Score (HRS) ERM identified several inaccurracies during this review which were brought to the attention of the EPA in a letter dated August 10 1989 and addressed to Stephen Lingle of the EPA from Tansitor ERM then prepared a workplan for a preliminary evaluation of the disposal pit area Tansitor approved this workplan in November 1988 This report presents results of the investigation outlined in this workplan

^

ffl

j|

Key components of ERMs investigation included

compilation of a detailed site history based on correspondence between Tansitor VTDEC and EPA personnel This compilation is attached as Appendix A

compilation of a related summary of historical water quality data for the site for the period between 1983 and 1988 which is included as Appendix B to this report and

- installation and sampling of monitoring wells and preparation of well logs in Appendix C

12 Purpose and Scope

The purpose of the investigation was to

1 determine the type and amounts of chemicals disposed in the disposal pit on the northern side of the site

2 obtain information to aid in evaluating the vertical and lateral extent of Volatile Organic Compounds (VOCs)

in ground and surface water and

3 evaluate on a preliminary basis the potential environmental risks associated with the disposal pit

The scope of work is intended to provide a preliminary characterization of site contamination downgradient of the

disposal pit and is not intended to fully characterize the site No other areas on site were evaluated Additional studies may be

necessary to completely evaluate soil and ground water quality at the site

ERMs November 1988 workplan identified a fourth purpose which was to characterize VOCs in the pit area The proposed location of ERM-2S in the pit area which would have addressed this purpose was altered after discussions with Tansitor personnel Since a soil remediation activity in the pit area is a probable outcome the location of ERM-2S was moved to a position downgradient of the pit so as not to be destroyed if soil is removed as part of a remedial activity

ERM contracted Alceon Corporation to evaluate the current data base relative to public health and environmental risk Due to the limited data available the preliminary evaluation of risk

was inconclusive Additional sampling events will address data gaps identified during this evaluation 1

A brief summary of the work scope follows ERM performed the following seven tasks to accomplish the goals of this investigation

Task 1 Task 2 Task 3 Task 4 Task 5 Task 6 Task 7

Review Existing Records Prepare a Health and Safety Plan Install Monitoring Wells Collect Samples and Survey Compile and Analyze Data Prepare Report Project Management

Results of this investigation do not include design of any remedial measures engineering cost estimates or comprehensive evaluation of potential risks

13 Site Description

Tansitor Electronics Inc is a manufacturer of electronic capacitors The Tansitor property is approximately 36 acres in size located in the Town of Bennington Vermont The site is in

91 the southwestern part of the state approximately 10 miles north of the Massachusetts border and approximately 06 miles east of the New York border (Figure 1)

The Tansitor property consists of the main manufacturing facility offices etch house parking areas open land and fire pond (Figure 2) The disposal pit lies approximately 400 feet upslope of the manufacturing building at an elevation of approximately 850 feet above Mean Sea Level (MSL) The firepond is 100 feet east of the manufacturing building and approximately 300 feet south of the disposal pit The firepond lies at the base of the slope below the disposal pit at an elevation of approximately 815 feet above MSL This pond serves as the primary source of water for the Bennington Fire Department during fires located west of Bennington

The surrounding area east and west of the site is primarily ruralresidential All of the nearby residents use ground water from the bedrock aquifer as their sole water source Whipstock Hill rises north of (behind) the facility A wetland exists on Tansitor property south of Route 9 in a stream valley which drains to the west An unnamed hill rises over 1900 feet above MSL south of the wetlands

The facility is over thirty years old and currently employs 184 people in the manufacture of tantalum electrolytic capacitors and chip type solid tantalum capacitors Production operations include

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- pressing of tantalum powder into pellets (anodes or cathodes)

- sintering in vacuum furnaces and anodizing the pellets using highly diluted solutions of nitric sulfuric and phosphoric acids and glycol

assembling the anodes and cathodes in tantalum silver or aluminum cases and

Completion of these assemblies using various welding technigues and custom built machinery

The electronic capacitors manufactured by Tansitor consist mainly of silver tantalum and palladium metals The process wastes generated from the manufacturing of these capacitors include metal plating solutions cleaning solvents degreasers and dilute acidcaustic solutions

The EPA has estimated that between 50 and 150 gallons per year of these wastes were disposed in an unlined disposal pit north of the facility between sometime after 1956 and late 1978 or early 1979 However chlorinated organic solvents primarily 111-trichloroethane were not used or disposed at the site until the mid-1970s

Ground water seeps discharge from the base of the slope south (downgradient) of the disposal pit Historical sampling in this area has shown elevated readings of VOCs The firepond at the base of the slope receives ground water discharge and has likewise been determined to contain elevated levels of VOCs The primary VOCs detected at the site to date have been 111-shytrichloroethane (TCA) and related chlorinated solvents

A detailed site history based on ERMs interviews and records review is presented in Appendix A

20 Methodology

The methodology used was in conformance to ASTM and EPA guidance documents ERM installed six monitoring wells and collected ground and surface water and soil samples during the winter of 198889 Field screening for VOCs was conducted on the split spoon soil samples from the soil borings No soil samples were delivered to a laboratory for analysis

ERM delivered water samples collected on January 3 1989 to Eastern Analytical Laboratories Inc of North Billerica Massachusetts for analysis (the resulting data were later shown to be invalid and thus were not used) VTDEC personnel delivered split water samples to the VTDEC laboratory for analysis The split VTDEC data are discussed exclusively in this report

Water samples were taken from two sources

ground water samples from the five shallow monitoring wells and

surface water samples from five historical sampling points

21 Monitoring Well Installations

211 Locations

Six wells were installed in five locations on the Tansitor Property (Figure 2) Well numbers followed by an S indicate a shallow overburden well with total depth less than 20 feet and well numbers followed by a D indicate deep overburden wells completed above the glacio-lacustrine clay layer

Well Location Purpose

ERM-1S About 75 north of Intended to be for background the disposal pit concentrations

ERM-2S About 150 south- Assess localized contaminant southwest of the transport and vertical disposal site distribution in the soil

ERM-3S Downgradient of pit Evaluate potential flow around at northeast corner the eastern side of the fire of the fire pond pond

The

ERM-4S About 400 south ofERM-2S at the northwest

Evaluate potential flow around the western side of the fire

corner of the fire pond pond

EKM-5S Southeast side offire pond

To assess shallow transport beyond the fire pond and

vertical flow

ERM-5D Southeast side of To assess deep transport fire pond underneath the fire pond

and vertical flow

212 Drilling Methodology

ERM subcontracted with CATOH Environmental Companies Inc of Albany NY for drilling services Several different drilling methods were used depending upon the soil type and total well depth Precautions were taken to assure that no cross contamination between aquifers occurred during drilling A Mobile B-61 Drill Rig capable of both rotary and hollow stem auger drilling was used Appendix C includes detailed drilling logs graphic logs and well construction diagrams

Well ERM-1S was drilled to a depth of 17 feet and wells ERM-3S 4S and 5S were drilled to 18 feet deep using 425 inch ID hollow stem augers

Well ERM-2S was begun using 625 inch inner diameter (ID) hollow stem augers (HSA) An increase in soil compaction required a change to rotary drilling at a depth of 34 feet Air rotary with a nominal six inch diameter tricone bit was used from 34 to 39 feet below ground surface Sand began to clog the bit at a depth of 39 feet Nominal four inch diameter steel casing was driven to 39 feet and the drilling method was changed to wash rotary with a nominal four inch diameter tricone bit The casing kept the sand from caving into the boring and sealed off the potentially contaminated soils above 39 feet from the deeper soils Wash rotary drilling was continued until the final boring depth 60 feet was achieved This boring was filled up to 19 feet below grade with bentonite to complete the well in the most contaminated zone based on the field screening of split spoon sediments

Monitoring well ERM-5D was drilled with 625 inch ID HSA to a depth of 20 feet An increase in soil density required a change in drilling method to wash rotary using a nominal four inch diameter tricone bit At a depth of 37 feet sand began to fill the boring and nominal four inch diameter steel casing was driven to a depth of 35 feet As with well ERM-2S the casing isolated the surface sediments The final depth of this boring was 57 feet however the boring was backfilled with bentonite up to 34 feet below grade above which the well was completed

213 Soil Sampling and Analysis

ERM performed standard split spoon sampling in accordance with ASTM standards (at intervals of five feet) in all soil borings during drilling An ERM hydrogeologist logged all samples describing all lithologic variations Samples were then stored in glass jars covered with aluminum foil capped and labelled Name of sample date time depth and blowcounts are labelled on each jar

ERM screened soil samples via headspace analysis using a portable field detector for organic vapors Either a photoionization detector (HNU PI-101) or a flame ionization detector (Foxboro Instruments OVA Model 128) was used In most cases organic vapors were measured both when the split spoon was opened and 24 hours later The 24 hour measurement is taken from the headspace by puncturing the aluminum foil in the sample jar after the sample is allowed to equilibrate at room temperature No soil samples were delivered to a laboratory for analysis

214 Well Construction

Following completion of the borings to total depth a one to two foot thick sandpack was added as a foundation for the well casing and to prevent the clogging of the screen with fine material from the formation In ERM-2S and -5D bentonite was used to fill in the borings from 60 to 19 feet below grade and 57 to 34 feet below grade respectively prior to the addition of the sandpack This was done so that the well screens could be set in the zone of highest contamination based on field screening

Two-inch diameter 0020 inch slot 304 stainless steel screen and riser were used for well construction Five feet of slotted screen was used in ERM-5D Ten feet of slotted screen was used in each of the shallow overburden wells Stainless steel centralizers were used in all wells to ensure that the screen was vertical and that the well was located in the center of the boring

The sandpack was deposited around the screened interval and extended approximately two feet above the top of the screen A bentonite pellet layer was then deposited above the sandpack to form a two-to-five foot seal A bentonite-cement grout was used to seal the remainder of the boring The top three to five feet of the boring consisted of Portland cement to provide a strong foundation for a protective steel casing The stainless steel risers protrude approximately two feet above the ground surface The protective casings are secured with locking caps

CATOH Environmental developed the wells following completion by pumping water from the well until the water became clear

22 Surveying Gauging and Collecting Water Samples

ERM subcontracted Gerald E Morrissey Inc of Bennington Vermont to survey all monitoring well locations at the site to a US Coast amp Geodetic Survey datum Elevations at the ground surface the top of the outer well casing and the top inner stainless steel pipe casing were measured

Prior to any ground water sampling an ERM hydrogeologist measured static water levels to the nearest one-hundredth of a foot The water in ERM-5D was frozen but a measurement was taken to the top of the ice Total depth was measured in all wells but ERM-5D and -3S A plug of ice prohibited measurement of total depth in ERM-3S

An ERM hydrogeologist evacuated at least three well volumes of water from the wells using dedicated bottom filling PVC bailers VTDEC personnel then collected samples for analysis of volatile organics by EPA Method 601602 In addition the Vermont DEC collected samples for analysis of priority pollutant metals

Surface water samples were collected by submersing vials and jars in the streams as designated on Figure 2 Analysis of surface water samples was identical to that of ground water samples

ERM collected samples which were delivered to Eastern Analytical Laboratories Inc (EAL) of North Billerica Massachusetts Because of maintenance being performed on EALs GCMS the samples were delivered to Toxicon Laboratories of Woburn Massachusetts The resulting data were determined by ERM to be invalid due to poor intralab chain-of-custody protocols at Toxicon and inconsistencies in laboratory procedures by Toxicon personnel

30 RESULTS AND DISCUSSION

3 1 Physiography and Regional Geology

The Tansitor site is in the southwestern corner of Vermont (Figure 1) in the Taconic Range This area is in the Hudson River basin The site is at the southern base of Whipstock Hill approximately 35 miles west of the center of Bennington Vermont An unnamed hill lies directly south across the valley

The geology of the vicinity is characterized by an overburden of glacial materials underlain by Walloomsic Slate No bedrock outcrops were observed on site The valley in which Tansitor is located was part of a glacial lake when recessional moraines blocked the valley drainage to the west A glacioshylacustrine clay deposit formed in the lake bottom and was later covered with till The extent of this clay is not well-documented in the literature

It is unclear whether this clay layer is continuous across the valley and whether it would act as an effective barrier to downward migration of contaminants into the bedrock ag_uifer The EPAs Site Inspection report states that the depth to bedrock (slate) at the Severs1 property 600 feet west of the site is 80 feet which if correct would indicate the absence of an effective clay layer at that location However if the wetlands or stream south of Route 9 represent a ground water discharge zone the presence of a limited on-site clay layer could prevent migration of contaminants into the bedrock These issues will be resolved in future investigations

The topographic slope is to the southeast An unnamed perennial stream is located across Route 9 from the site and flows towards the southwest for about 05 miles before entering Browns Brook which flows west about four miles before entering the Hoosic River An intermittent stream begins near the northeastern corner of the main building and joins the perennial stream in the wetland south of the site

3 2 Site Geology

The overburden at the Tansitor site consists of glacial tills and glacio-lacustrine clays Figure 3a shows the location of an on-site cross-section Figure 3b is a generalized cross-section for the site The till matrix is primarily mixed clays and silts with up to 40 percent sand and gravel In general till compaction increases with depth and with an increase in clay content The exact thickness of the overburden is unknown Sorption of contaminants onto the overburden sediments is likely enhanced by the high clay content of the till which could retard the movement of the contaminants

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A compact orange silty clay of glacio-lacustrine origin was found in both ERM-2S and ERM-5D at respective depths of 44 and 50 feet below grade (798 and 770 feet above Mean Sea Level) The thickness of this layer is a minimum of seven feet at ERM-5D and a minimum of 18 feet at ERM-2S (both borings were halted before the clays were completely penetrated) The other shallow wells were not advanced deep enough to intercept the clay layer

Within the till layer in ERM-2S and -5D a significant increase in the number of blow counts occurred at 10 and 15 feet respectively This reflects an increase in sediment compaction at these depths Since the sediment texture is the same above and below these intervals it is likely that the upper layer represents disturbed sediments possibly a collapse or slump structure

A lens of gray clay was found between 10 and 12 feet below ground level in ERM-4S The degree to which this may act as an impermeable barrier depends in part on the lateral extent of the clay lens

Both ERM-4S and -5D have seams of fine sand bedded with the silty clays At ERM-2S a three foot diameter boulder was intersected

Bedrock was not encountered in any of the borings Contrary to prior reports bedrock does not appear to outcrop in the immediate vicinity of the disposal pit The only bedrock outcrops observed were on the northern side of Whipstock Hill far upgradient of the site

3 3 Soil Quality

Previous soil sampling by Tansitor in the disposal pit area is described in Appendix A No additional sampling in this area was performed by ERM Results of ERMs field screening of split spoon soil samples are shown in Table 1 As indicated only one sample at the zero to 20 foot depth from the ERM-1S boring had a detection using an HNU meter The reading of 20 ppm could be due to the moisture content of the soil or the presence of VOCs Only laboratory or other more accurate analysis could confirm the presence of VOCs Future soil sampling in the disposal pit area should address this issue

In boring ERM-2S all samples between 50 and 44 feet below grade had detections of volatile organics The highest concentrations in this boring were detected between 50 and 12 feet below ground level (up to 700 ppm) At 44 feet below grade a tight clay was encountered and no volatiles were detected below this point The spoon collected above the clay layer at 40 to 42 feet below grade had a concentration of 50 ppm which is

14

Table 1

Results of Field Screening of Split Spoon Sediments

(ppm)

24 HOUR 24 HOUR

WELL NO DEPTH ON SITE HEADSPACE WELL NO DEPTH ON SITE HEADSPACE

1S 0-2 2 4S 0-2 ND ND

5-7 ND ND 5-7 lt1 ND

10-12 ND ND 10-12 ND ND

15-17 ND ND 15-17 ND ND

18-20 ND ND

2S 0-2 ND

5-7 -shy gt100 5D 0-2 ND

10-12 -shy 700 5-7 -- 3

15-17 -shy 85 10-12 -- 1

20-22 -shy 4 15-17 NO ND

25-27 -shy 6 20-22 ND ND

30-32 -shy 10 25-27 NO ND

325-34 -shy 65 30-32 80 ND

39-40 -shy 30 35-37 ND NO

40-42 -shy 5 40-42 ND ND

45-47 NO ND 45-47 ND NO

50-52 ND ND 50-52 ND NO

55-57 ND ND 55-57 NO ND

60-62 ND

-shy INDICATES THAT NO READING WAS TAKEN

3S 0-2 ND ND

5-7 ND ND ONLY PEAK CONCENTRATIONS ARE LISTED

10-12 ND ND

I | 15-17 I lt1 ND

I | 18-20 I lt1 2

The

significantly below the peak concentrations in the boring This concentration which is far below the solubility limit of the VOCs detected at the site would indicate that a Dense Non-Aqueous Phase Liquid (DNAPL) is not present above the clay layer at this location Based on these readings the well screen for EPxM-2S was set between 70 and 17 feet below grade

ERM-3S had minor detections between 15 and 20 feet below grade of 20 ppm or less ERM-4S had a trace detection at the 50 to 70 foot interval of less than 10 ppm Similarly concentrations of 30 ppm or less were detected between 50 and 12 feet below grade in ERM-5D

The Vermont unofficial unpublished guidelines for soil removal are based on RCPJV landban requirements The general guidance is to multiply the landban concentration by a factor of 20 In the absence of a landban value the MCL multiplied by a factor of 20 should be used For constituents at the site the following guidelines may be applicable

Consituent Remediation Guideline

111-trichloroethane 8200 ppb (landban-based)

trichloroethene 100 ppb (MCL-based)

chloroform 2000 ppb (MCL-based)

11-dichloroethene 140 ppb (MCL-based)

tetrachloroethene 100 ppb ( p r o p o s e d based)

MCL-

11-dichloroethane 1400 ppb (based on VT water quality guideline)

Since these guidelines are chemical-specific laboratory analyses of soil samples are necessary to determine soil remediation levels for the Tansitor site ERM did not submit any soil samples for laboratory analysis during this investigation although prior investigations included soil sampling and analysis in the disposal pit area (Appendix A)

Since a soil excavation or in-situ remediation would not normally extend below the water table the soil removal guidelines do not necessarily apply to samples collected below the water table Saturated contaminated sediments are generally addressed through a ground water remedial action

16 TtK

34 Hydroqeology and Water Quality

In order to assess potential impacts of the Tansitor disposal pit site EKM investigated ground and surface water conditions on and directly downgradient of the site As ground and surface water are interactive an analysis of both systems is necessary to assess potential migration of chemicals

For comparative purposes the Maximum Contaminant Levels (MCLs) used for defining drinking water quality are listed below for those chemicals present at the site

Parameter MCL (ppb)

11-dichloroethane 70 (VT guideline not an MCL) 11-dichloroethene 7 111-trichloroethane 200 trichloroethene 5 tetrachloroethene 5 (proposed MCL) chloroform 100 (total trihalomethanes)

341 Historical Water Quality

An extensive sampling history exists at the site since 1983 Although limited ground water sampling occurred primarily in nearby water supply wells a large volume of surface water quality data exists Unfortunately the surface water sampling locations were never standardized by staking locations in the field Therefore it is difficult to generate trends over time at specific locations The surface water sampling points should be considered approximate locations Appendix B contains a summary of all water samples collected at and near the Tansitor site

In terms of ground water quality results there has never been a detection of volatile organics in any of the residential water supply wells adjacent to the Tansitor site Only one sampling event (January 20 1984) indicated the possible presence of volatiles in the Tansitor tap water Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only detected once it is likely that this detection was a false positive or indicative of laboratory contamination Follow-up sampling to this investigation will address residential well water quality

17 The

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342 Surface Water Quality

Surface water quality results from the January 3 1989 event are summarized in Table 2 and historical data appear in Appendix B Sampling locations are shown on Figure 2 As indicated

sample S-3 is located northeast of the firepond

- sample S-7 is located at an outfall of a pipeline originating at the firepond before entering the perennial stream

samples S-ll and S-13 represent upgradient and downgradient locations respectively on the perennial stream south of Route 9 and

- sample S-16 is located at an upgradient point on the intermittent stream north of the facility

Sample S-3 had no detections of VOCs This result is different from past sampling events (Appendix B) where S-3 was the most contaminated of any of the surface water locations After discussions with VTDEC personnel it appears that the location of S-3 has varied in the past Therefore no accurate trends can be determined at this time

VOC concentrations were non-detectable in S-ll S-7 had a total of 142 ppb and S-13 had a total of 24 ppb Based on the location of sampling points it appears that chemicals are entering the stream downgradient of S-ll either from tributary surface water sources or from ground water discharge The Maximum Contaminant Level (MCL) for 11-dichloroethane (11-DCA) has not been defined however the unofficial Vermont drinking water guideline of 70 ppb was not exceeded The MCLs for 11shydichloroethene (11-DCE) and 11 1-trichloroethane (TCA) the other two chemicals detected in S-7 and S-13 were also not exceeded The MCLs are presented here for comparative purposes alone since the stream is not a likely source of drinking water

Sample S-16 collected from the on-site intermittent stream had a concentration of 16615 ppb of total volatiles which exceeds drinking water standards for all constituents detected This concentration may be due to ground water discharge from the slope north of the firepond some of which drains west into the intermittent stream The presence of tetrachloroethene (PCE) at 20 ppb which was not detected anywhere else at the site warrants further investigation in this area

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343 Ground Water Flow and Direction

Figure 4 shows a water table map across the site Table 3 summarizes the water level data Ground water flow is locally towards the southeast at the site at a gradient of approximately 0065 ftft

Flow Rates

Using the natural range of values below and the modified Darcy equation the average linear velocity for the ground water in the overburden above the clay at the site is probably between 67 ftyr and 0027 ftyr

hydraulic conductivity 10~4 to 10~7 cmsec of till (K) (after Freeze amp Cherry

1979)

hydraulic gradient (i) 0065 ftft (calculated between

ERM-1S and -5S)

effective porosity (n) 10 to 25

v = (Ki)n

Although permeability (K) data were not obtained during this initial investigation a likely value of permeability is 10~4

cmsec with an effective porosity of 20 which would result in an average linear velocity of 34 ftyr for the upper till zone Field permeability testing is warranted to refine this estimate The more compact lower till likely has a lower permeability which would result in a lower average linear velocity which could restrict contaminant transport

In terms of a sensitivity analysis for the above equation velocity and effective porosity are inversely proportional Therefore a larger effective porosity would result in a slower average linear velocity A higher permeability would result in a higher velocity Applying these velocity estimates to contaminant transport must take into account dispersion and retardation effects

Vertical Gradients

At the time that ERM measured the water levels in the monitoring wells water in ERM-5D was frozen in the casing above ground level This is due to a high water level The depth to ice can not be directly correlated to depth to water in this well because of expansion effects however the difference is not

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Water Table Elevatlor ~t above MSL)

Water Taole Contours

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for Jani^arj 3 1989

WELL

ERM IS

ERM 2S

ERM 3S

ERM 4S

ERM 5S

ERM 5D

Table 3

WATER GAUGING AND SURVEY DATA

MP ELEVATION

ft above MSL

86029

84387

82262

81995

82238

82237

DEPTH TO

WATER

ft below MP

9 10

3 46

160

348

9 00

100

TOTAL DEPTH

ft below MP

1345

1980

1620

17 75

WATER TABLE ELEVATION

ft above MSL

851 19

84041

82102

81647

813 38

82137

All measurements made on January 3 1989 by ERM

Frozen plug prevented measurement Depth to ice

The

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likely to exceed a couple of inches The difference in the depth to ice in ERM-5D and the depth to water in ERM-5S is about eight feet This represents a strong upward vertical gradient especially since ERM-5S is screened between 6 and 16 feet below grade and EKM-5D is screened between 27 and 32 feet below grade

Although ERM-5S and -5D are screened in similar strata based on sediment texture the blow counts increased considerably beyond 15 feet below grade indicating a tighter zone as described earlier The increased compaction with depth and the upward vertical gradient would tend to hinder the downward migration of dissolved contaminants in this area Dissolved contaminant flow is probably concentrated in the upper till layer due to these combined factors

Because of the difference in density between water and organic solvents a vertical gradient alone would not prohibit the downward migration of a DNAPL As discussed earlier however there is currently no evidence to indicate the presence of a DNAPL

344 Ground Water Quality

Organics

Table 4 is a summary of volatile organic concentrations in ground water (as determined by the VTDEC laboratory) from the on-site monitoring wells installed by ERM Figure 5 shows the generalized TCA plume at the site Five solvent-related compounds from the EPA Method 624 suite of parameters were identified in the overburden at the site Well ERM-5D was frozen above ground at the time of sampling and therefore no data is available

Of the six compounds detected at the site several are likely breakdown products of the more prevalent contaminants TCA is known to break down abiotically to 11-DCE and through biodegradation to 11-DCA The kinetics of the reactions favor the formation of 11-DCA It is likely that the remaining constituents trichloroethene (TCE) tetrachloroethene (PCE) and chloroform are virgin chemicals

The upgradient and downgradient wells EPJM-1S and -5S both had non-detectable readings of volatile organic chemicals This would indicate that no additional sources of ground water contamination exist upgradient of the disposal pit Although the non-detectable reading in ERM-5S indicates that considerable attenuation of contaminants has occurred between the disposal pit and beyond the fire pond it does not necessarily demonstrate that ERM-5S is the furthest downgradient advance of contaminants in ground water It is possible that the leading edge of contamshy

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W O 4-1 gtH rH rH -H O O O -H Q -H ox XI rH r-l O o 2 4-gt HH O U EH O gt Ul

O P C O -H bullH 1 rH V) bull- 4-1 0 Q) U Q Q H x j OJ CO -H EH a 73 O 1 1 ~ O lt rH gt1

Z -H rH (H cH rH -H EH CL rH 3 o c x - -bull - SH O g rt3

o o P O ltH rH (H EH EH tlaquo C gt CO lt

Ths

wate 1 i no

1 ntsrm 1 tts stream

perennial strsam

Surface Wcw2r~ Sample

N 100

Mom tor irg We I

TCA (ODD) D or nondetsctacia

t Cancentnac

ERM F -e o Sea 1e ( Fee t )

New Erg lard 1nc

00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

ERM-2S the concentration of total VOCsppb immediately downgradient of tpit and

was 105400 he disposal

ERM-3S4S the concentrations of total VOCsand 28 ppb respectively

were 8955

MCLs for all organic constituents detected in ERM-2S and -3S were exceeded Although a portion of the plume may be flowing to either side of the ERM-5SD well pair it is likely that the firepond is a significant discharge point for VOCs

Although no current data suggests the on-site migration of dissolved contaminants into bedrock insufficient data currently exists to conclusively determine whether contaminant transport into the bedrock aquifer where nearby water supply wells are screened could occur Some factors which if confirmed would reduce the potential for downward migration include

the continuity of the clay layer in the area of the plume

upward gradients from bedrock into the overburden sediments in the area of the plume

whether or not the stream and wetlands south of Route 9 represent a flow boundaryground water discharge zone and

- the significance and effectiveness of the firepond as an interceptor of the ground water plume

VOCs have never been detected in any nearby residential bedrock water supply wells Although VOCs were reported in low concentrations once in the on-site Tansitor water supply well follow-up sampling never confirmed these results Additional Tansitor and residential water supply well sampling is planned

VI

The

Group

RECOMMENDATIONS

Soil Quality

1 ERM recommends that a soil sampling program be developed for the disposal pit area and the area near ERM-1S to define the volume of contaminated soil potentially requiring remediation The purpose of this remediation would be to mitigate the effects of the disposal pit soils as a potential source area

Surface Water Quality

1 ERM recommends that quarterly sampling at specific surface water locations be performed to establish seasonal and long term trends in surface water quality This may help establish whether concentrations are diminishing over time

2 ERM recommends that hydrologic testing be performed on the perennial stream to determine whether it is in direct hydrologic contact with the underlying aquifer sediments These tests will help establish whether VOCs in the perennial stream are coming from ground or surface water discharge Tests should also be run to determine whether the water at S-7 comes from the firepond andor the intermittent stream

3 ERM recommends performing hydrologic and chemical testing in the area around S-16 to determine the source of water and contamination in the intermittent stream

Ground Water Flow

1 ERM recommends performing in-situ permeability testing on the overburden sediments to evaluate transport rates and to obtain pre-remedial design data Shelby tube sampling is also warranted in the clay to determine the hydraulic conductivity of that layer

2 To better assess vertical and horizontal gradients in deeper layers ERM recommends installing monitoring wells into bedrock for evaluating hydrogeochemical characteristics This is necessary to demonstrate whether or not the bedrock aquifer has been or could be impacted by disposal acitivites at the pit These additional wells are also recommended to better characterize the lateral and vertical extent of the clay layer

Vll

The

Group

3 ERM recommends additional testing to determine the regional flow patterns into the downgradient wetlands and the effectiveness of the wetlands as a ground water discharge zone andor flow boundary

Ground Water Quality

1 ERM recommends additional wells in the area of the firepond to delineate the lateral and vertical extent of the ground water plume Hydrologic and chemical testing of the firepond sediments should be performed to define the effect of ground water quality on these sediments

2 ERM recommends additional testing or analyses to evaluate retardation and fate of contaminants downgradient of the disposal pit and to determine hydrogeologic properties of the overburden aquifer to aid in the design of a ground water remedial action if appropriate This may include but not be limited to additional wells test borings water sampling and geophysics

Interim Remedial Action

1 Consideration should be given to implementing focused on-site ground water remedial actions after additional hydrogeological and geochemical testing to control and abate the discharge of contaminated ground water to the firepond and capture further contaminant migration from the disposal pit area These interim actions should be consistent with overall remedies that might prove to be required based on the results of the additional investigations as recommended above

Vlll

Group

10 INTRODUCTION

11 Background

Tansitor Electronics Inc notified the United States Environmental Protection Agency (EPA) in May 1981 of potential contamination at the site to comply with CERCLA Section 103(c) This action began the National Contingency Plan (NCP) process of evaluating whether the site warranted action under the Comprehensive Environmental Response Compensation and Liability Act (CERCLA) The focus of the potential CERCLA response action is a 500 square foot disposal pit behind the Tansitor facility which received solvents and dilute acid solutions between sometime after 1956 and late 1978 or early 1979 A Preliminary Assessment (PA) was completed by the Vermont Agency of Environmental Conservation (now the VTDEC) in May 1984 The EPA completed a Site Inspection (SI) in January 1987 The Tansitor site was identified in the Federal Register as a proposed National Priorities List (NPL) site in June 1988

The EPA- and DEC- estimated volume of wastes released at the disposal pit has varied between 850 gallons (used in the HRS calculations) and 500 cubic yards (101000 gallons) Although no formal records exist Tansitor believes that the latter estimates contained in the PA and SI reports are misleading and inflated based on the following information

between 50 and 150 gallons per year of primarily dilute aqueous acidic solutions were released in the disposal pit over an approximately 17 year period and

111-trichloroethane (TCA) the predominant solvent detected at the site was not used until the mid-1970s and therefore was only released over an approximately five year period

Based on this information it is improbable that 500 cubic yards of waste were released at the disposal pit It is likely that the actual volume of solvents disposed of is closer to 500 gallons (based on 100 galsyear over five years)

Tansitor contacted ERM-New England Inc (ERM) in August 1988 to evaluate the EPAs Hazard Ranking Score (HRS) ERM identified several inaccurracies during this review which were brought to the attention of the EPA in a letter dated August 10 1989 and addressed to Stephen Lingle of the EPA from Tansitor ERM then prepared a workplan for a preliminary evaluation of the disposal pit area Tansitor approved this workplan in November 1988 This report presents results of the investigation outlined in this workplan

^

ffl

j|

Key components of ERMs investigation included

compilation of a detailed site history based on correspondence between Tansitor VTDEC and EPA personnel This compilation is attached as Appendix A

compilation of a related summary of historical water quality data for the site for the period between 1983 and 1988 which is included as Appendix B to this report and

- installation and sampling of monitoring wells and preparation of well logs in Appendix C

12 Purpose and Scope

The purpose of the investigation was to

1 determine the type and amounts of chemicals disposed in the disposal pit on the northern side of the site

2 obtain information to aid in evaluating the vertical and lateral extent of Volatile Organic Compounds (VOCs)

in ground and surface water and

3 evaluate on a preliminary basis the potential environmental risks associated with the disposal pit

The scope of work is intended to provide a preliminary characterization of site contamination downgradient of the

disposal pit and is not intended to fully characterize the site No other areas on site were evaluated Additional studies may be

necessary to completely evaluate soil and ground water quality at the site

ERMs November 1988 workplan identified a fourth purpose which was to characterize VOCs in the pit area The proposed location of ERM-2S in the pit area which would have addressed this purpose was altered after discussions with Tansitor personnel Since a soil remediation activity in the pit area is a probable outcome the location of ERM-2S was moved to a position downgradient of the pit so as not to be destroyed if soil is removed as part of a remedial activity

ERM contracted Alceon Corporation to evaluate the current data base relative to public health and environmental risk Due to the limited data available the preliminary evaluation of risk

was inconclusive Additional sampling events will address data gaps identified during this evaluation 1

A brief summary of the work scope follows ERM performed the following seven tasks to accomplish the goals of this investigation

Task 1 Task 2 Task 3 Task 4 Task 5 Task 6 Task 7

Review Existing Records Prepare a Health and Safety Plan Install Monitoring Wells Collect Samples and Survey Compile and Analyze Data Prepare Report Project Management

Results of this investigation do not include design of any remedial measures engineering cost estimates or comprehensive evaluation of potential risks

13 Site Description

Tansitor Electronics Inc is a manufacturer of electronic capacitors The Tansitor property is approximately 36 acres in size located in the Town of Bennington Vermont The site is in

91 the southwestern part of the state approximately 10 miles north of the Massachusetts border and approximately 06 miles east of the New York border (Figure 1)

The Tansitor property consists of the main manufacturing facility offices etch house parking areas open land and fire pond (Figure 2) The disposal pit lies approximately 400 feet upslope of the manufacturing building at an elevation of approximately 850 feet above Mean Sea Level (MSL) The firepond is 100 feet east of the manufacturing building and approximately 300 feet south of the disposal pit The firepond lies at the base of the slope below the disposal pit at an elevation of approximately 815 feet above MSL This pond serves as the primary source of water for the Bennington Fire Department during fires located west of Bennington

The surrounding area east and west of the site is primarily ruralresidential All of the nearby residents use ground water from the bedrock aquifer as their sole water source Whipstock Hill rises north of (behind) the facility A wetland exists on Tansitor property south of Route 9 in a stream valley which drains to the west An unnamed hill rises over 1900 feet above MSL south of the wetlands

The facility is over thirty years old and currently employs 184 people in the manufacture of tantalum electrolytic capacitors and chip type solid tantalum capacitors Production operations include

3 SO

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UH

CC

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en

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1

CD t

E o o

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_c c D

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r^ ro

O Q)

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omdash Q

-d

ugt CD

1 c O)

CO O

CO

^

-^

0 bull

- pressing of tantalum powder into pellets (anodes or cathodes)

- sintering in vacuum furnaces and anodizing the pellets using highly diluted solutions of nitric sulfuric and phosphoric acids and glycol

assembling the anodes and cathodes in tantalum silver or aluminum cases and

Completion of these assemblies using various welding technigues and custom built machinery

The electronic capacitors manufactured by Tansitor consist mainly of silver tantalum and palladium metals The process wastes generated from the manufacturing of these capacitors include metal plating solutions cleaning solvents degreasers and dilute acidcaustic solutions

The EPA has estimated that between 50 and 150 gallons per year of these wastes were disposed in an unlined disposal pit north of the facility between sometime after 1956 and late 1978 or early 1979 However chlorinated organic solvents primarily 111-trichloroethane were not used or disposed at the site until the mid-1970s

Ground water seeps discharge from the base of the slope south (downgradient) of the disposal pit Historical sampling in this area has shown elevated readings of VOCs The firepond at the base of the slope receives ground water discharge and has likewise been determined to contain elevated levels of VOCs The primary VOCs detected at the site to date have been 111-shytrichloroethane (TCA) and related chlorinated solvents

A detailed site history based on ERMs interviews and records review is presented in Appendix A

20 Methodology

The methodology used was in conformance to ASTM and EPA guidance documents ERM installed six monitoring wells and collected ground and surface water and soil samples during the winter of 198889 Field screening for VOCs was conducted on the split spoon soil samples from the soil borings No soil samples were delivered to a laboratory for analysis

ERM delivered water samples collected on January 3 1989 to Eastern Analytical Laboratories Inc of North Billerica Massachusetts for analysis (the resulting data were later shown to be invalid and thus were not used) VTDEC personnel delivered split water samples to the VTDEC laboratory for analysis The split VTDEC data are discussed exclusively in this report

Water samples were taken from two sources

ground water samples from the five shallow monitoring wells and

surface water samples from five historical sampling points

21 Monitoring Well Installations

211 Locations

Six wells were installed in five locations on the Tansitor Property (Figure 2) Well numbers followed by an S indicate a shallow overburden well with total depth less than 20 feet and well numbers followed by a D indicate deep overburden wells completed above the glacio-lacustrine clay layer

Well Location Purpose

ERM-1S About 75 north of Intended to be for background the disposal pit concentrations

ERM-2S About 150 south- Assess localized contaminant southwest of the transport and vertical disposal site distribution in the soil

ERM-3S Downgradient of pit Evaluate potential flow around at northeast corner the eastern side of the fire of the fire pond pond

The

ERM-4S About 400 south ofERM-2S at the northwest

Evaluate potential flow around the western side of the fire

corner of the fire pond pond

EKM-5S Southeast side offire pond

To assess shallow transport beyond the fire pond and

vertical flow

ERM-5D Southeast side of To assess deep transport fire pond underneath the fire pond

and vertical flow

212 Drilling Methodology

ERM subcontracted with CATOH Environmental Companies Inc of Albany NY for drilling services Several different drilling methods were used depending upon the soil type and total well depth Precautions were taken to assure that no cross contamination between aquifers occurred during drilling A Mobile B-61 Drill Rig capable of both rotary and hollow stem auger drilling was used Appendix C includes detailed drilling logs graphic logs and well construction diagrams

Well ERM-1S was drilled to a depth of 17 feet and wells ERM-3S 4S and 5S were drilled to 18 feet deep using 425 inch ID hollow stem augers

Well ERM-2S was begun using 625 inch inner diameter (ID) hollow stem augers (HSA) An increase in soil compaction required a change to rotary drilling at a depth of 34 feet Air rotary with a nominal six inch diameter tricone bit was used from 34 to 39 feet below ground surface Sand began to clog the bit at a depth of 39 feet Nominal four inch diameter steel casing was driven to 39 feet and the drilling method was changed to wash rotary with a nominal four inch diameter tricone bit The casing kept the sand from caving into the boring and sealed off the potentially contaminated soils above 39 feet from the deeper soils Wash rotary drilling was continued until the final boring depth 60 feet was achieved This boring was filled up to 19 feet below grade with bentonite to complete the well in the most contaminated zone based on the field screening of split spoon sediments

Monitoring well ERM-5D was drilled with 625 inch ID HSA to a depth of 20 feet An increase in soil density required a change in drilling method to wash rotary using a nominal four inch diameter tricone bit At a depth of 37 feet sand began to fill the boring and nominal four inch diameter steel casing was driven to a depth of 35 feet As with well ERM-2S the casing isolated the surface sediments The final depth of this boring was 57 feet however the boring was backfilled with bentonite up to 34 feet below grade above which the well was completed

213 Soil Sampling and Analysis

ERM performed standard split spoon sampling in accordance with ASTM standards (at intervals of five feet) in all soil borings during drilling An ERM hydrogeologist logged all samples describing all lithologic variations Samples were then stored in glass jars covered with aluminum foil capped and labelled Name of sample date time depth and blowcounts are labelled on each jar

ERM screened soil samples via headspace analysis using a portable field detector for organic vapors Either a photoionization detector (HNU PI-101) or a flame ionization detector (Foxboro Instruments OVA Model 128) was used In most cases organic vapors were measured both when the split spoon was opened and 24 hours later The 24 hour measurement is taken from the headspace by puncturing the aluminum foil in the sample jar after the sample is allowed to equilibrate at room temperature No soil samples were delivered to a laboratory for analysis

214 Well Construction

Following completion of the borings to total depth a one to two foot thick sandpack was added as a foundation for the well casing and to prevent the clogging of the screen with fine material from the formation In ERM-2S and -5D bentonite was used to fill in the borings from 60 to 19 feet below grade and 57 to 34 feet below grade respectively prior to the addition of the sandpack This was done so that the well screens could be set in the zone of highest contamination based on field screening

Two-inch diameter 0020 inch slot 304 stainless steel screen and riser were used for well construction Five feet of slotted screen was used in ERM-5D Ten feet of slotted screen was used in each of the shallow overburden wells Stainless steel centralizers were used in all wells to ensure that the screen was vertical and that the well was located in the center of the boring

The sandpack was deposited around the screened interval and extended approximately two feet above the top of the screen A bentonite pellet layer was then deposited above the sandpack to form a two-to-five foot seal A bentonite-cement grout was used to seal the remainder of the boring The top three to five feet of the boring consisted of Portland cement to provide a strong foundation for a protective steel casing The stainless steel risers protrude approximately two feet above the ground surface The protective casings are secured with locking caps

CATOH Environmental developed the wells following completion by pumping water from the well until the water became clear

22 Surveying Gauging and Collecting Water Samples

ERM subcontracted Gerald E Morrissey Inc of Bennington Vermont to survey all monitoring well locations at the site to a US Coast amp Geodetic Survey datum Elevations at the ground surface the top of the outer well casing and the top inner stainless steel pipe casing were measured

Prior to any ground water sampling an ERM hydrogeologist measured static water levels to the nearest one-hundredth of a foot The water in ERM-5D was frozen but a measurement was taken to the top of the ice Total depth was measured in all wells but ERM-5D and -3S A plug of ice prohibited measurement of total depth in ERM-3S

An ERM hydrogeologist evacuated at least three well volumes of water from the wells using dedicated bottom filling PVC bailers VTDEC personnel then collected samples for analysis of volatile organics by EPA Method 601602 In addition the Vermont DEC collected samples for analysis of priority pollutant metals

Surface water samples were collected by submersing vials and jars in the streams as designated on Figure 2 Analysis of surface water samples was identical to that of ground water samples

ERM collected samples which were delivered to Eastern Analytical Laboratories Inc (EAL) of North Billerica Massachusetts Because of maintenance being performed on EALs GCMS the samples were delivered to Toxicon Laboratories of Woburn Massachusetts The resulting data were determined by ERM to be invalid due to poor intralab chain-of-custody protocols at Toxicon and inconsistencies in laboratory procedures by Toxicon personnel

30 RESULTS AND DISCUSSION

3 1 Physiography and Regional Geology

The Tansitor site is in the southwestern corner of Vermont (Figure 1) in the Taconic Range This area is in the Hudson River basin The site is at the southern base of Whipstock Hill approximately 35 miles west of the center of Bennington Vermont An unnamed hill lies directly south across the valley

The geology of the vicinity is characterized by an overburden of glacial materials underlain by Walloomsic Slate No bedrock outcrops were observed on site The valley in which Tansitor is located was part of a glacial lake when recessional moraines blocked the valley drainage to the west A glacioshylacustrine clay deposit formed in the lake bottom and was later covered with till The extent of this clay is not well-documented in the literature

It is unclear whether this clay layer is continuous across the valley and whether it would act as an effective barrier to downward migration of contaminants into the bedrock ag_uifer The EPAs Site Inspection report states that the depth to bedrock (slate) at the Severs1 property 600 feet west of the site is 80 feet which if correct would indicate the absence of an effective clay layer at that location However if the wetlands or stream south of Route 9 represent a ground water discharge zone the presence of a limited on-site clay layer could prevent migration of contaminants into the bedrock These issues will be resolved in future investigations

The topographic slope is to the southeast An unnamed perennial stream is located across Route 9 from the site and flows towards the southwest for about 05 miles before entering Browns Brook which flows west about four miles before entering the Hoosic River An intermittent stream begins near the northeastern corner of the main building and joins the perennial stream in the wetland south of the site

3 2 Site Geology

The overburden at the Tansitor site consists of glacial tills and glacio-lacustrine clays Figure 3a shows the location of an on-site cross-section Figure 3b is a generalized cross-section for the site The till matrix is primarily mixed clays and silts with up to 40 percent sand and gravel In general till compaction increases with depth and with an increase in clay content The exact thickness of the overburden is unknown Sorption of contaminants onto the overburden sediments is likely enhanced by the high clay content of the till which could retard the movement of the contaminants

11 The

o o o o o o CO CO rr CJ o CO CO CO CO 00 CO

uea|j

A compact orange silty clay of glacio-lacustrine origin was found in both ERM-2S and ERM-5D at respective depths of 44 and 50 feet below grade (798 and 770 feet above Mean Sea Level) The thickness of this layer is a minimum of seven feet at ERM-5D and a minimum of 18 feet at ERM-2S (both borings were halted before the clays were completely penetrated) The other shallow wells were not advanced deep enough to intercept the clay layer

Within the till layer in ERM-2S and -5D a significant increase in the number of blow counts occurred at 10 and 15 feet respectively This reflects an increase in sediment compaction at these depths Since the sediment texture is the same above and below these intervals it is likely that the upper layer represents disturbed sediments possibly a collapse or slump structure

A lens of gray clay was found between 10 and 12 feet below ground level in ERM-4S The degree to which this may act as an impermeable barrier depends in part on the lateral extent of the clay lens

Both ERM-4S and -5D have seams of fine sand bedded with the silty clays At ERM-2S a three foot diameter boulder was intersected

Bedrock was not encountered in any of the borings Contrary to prior reports bedrock does not appear to outcrop in the immediate vicinity of the disposal pit The only bedrock outcrops observed were on the northern side of Whipstock Hill far upgradient of the site

3 3 Soil Quality

Previous soil sampling by Tansitor in the disposal pit area is described in Appendix A No additional sampling in this area was performed by ERM Results of ERMs field screening of split spoon soil samples are shown in Table 1 As indicated only one sample at the zero to 20 foot depth from the ERM-1S boring had a detection using an HNU meter The reading of 20 ppm could be due to the moisture content of the soil or the presence of VOCs Only laboratory or other more accurate analysis could confirm the presence of VOCs Future soil sampling in the disposal pit area should address this issue

In boring ERM-2S all samples between 50 and 44 feet below grade had detections of volatile organics The highest concentrations in this boring were detected between 50 and 12 feet below ground level (up to 700 ppm) At 44 feet below grade a tight clay was encountered and no volatiles were detected below this point The spoon collected above the clay layer at 40 to 42 feet below grade had a concentration of 50 ppm which is

14

Table 1

Results of Field Screening of Split Spoon Sediments

(ppm)

24 HOUR 24 HOUR

WELL NO DEPTH ON SITE HEADSPACE WELL NO DEPTH ON SITE HEADSPACE

1S 0-2 2 4S 0-2 ND ND

5-7 ND ND 5-7 lt1 ND

10-12 ND ND 10-12 ND ND

15-17 ND ND 15-17 ND ND

18-20 ND ND

2S 0-2 ND

5-7 -shy gt100 5D 0-2 ND

10-12 -shy 700 5-7 -- 3

15-17 -shy 85 10-12 -- 1

20-22 -shy 4 15-17 NO ND

25-27 -shy 6 20-22 ND ND

30-32 -shy 10 25-27 NO ND

325-34 -shy 65 30-32 80 ND

39-40 -shy 30 35-37 ND NO

40-42 -shy 5 40-42 ND ND

45-47 NO ND 45-47 ND NO

50-52 ND ND 50-52 ND NO

55-57 ND ND 55-57 NO ND

60-62 ND

-shy INDICATES THAT NO READING WAS TAKEN

3S 0-2 ND ND

5-7 ND ND ONLY PEAK CONCENTRATIONS ARE LISTED

10-12 ND ND

I | 15-17 I lt1 ND

I | 18-20 I lt1 2

The

significantly below the peak concentrations in the boring This concentration which is far below the solubility limit of the VOCs detected at the site would indicate that a Dense Non-Aqueous Phase Liquid (DNAPL) is not present above the clay layer at this location Based on these readings the well screen for EPxM-2S was set between 70 and 17 feet below grade

ERM-3S had minor detections between 15 and 20 feet below grade of 20 ppm or less ERM-4S had a trace detection at the 50 to 70 foot interval of less than 10 ppm Similarly concentrations of 30 ppm or less were detected between 50 and 12 feet below grade in ERM-5D

The Vermont unofficial unpublished guidelines for soil removal are based on RCPJV landban requirements The general guidance is to multiply the landban concentration by a factor of 20 In the absence of a landban value the MCL multiplied by a factor of 20 should be used For constituents at the site the following guidelines may be applicable

Consituent Remediation Guideline

111-trichloroethane 8200 ppb (landban-based)

trichloroethene 100 ppb (MCL-based)

chloroform 2000 ppb (MCL-based)

11-dichloroethene 140 ppb (MCL-based)

tetrachloroethene 100 ppb ( p r o p o s e d based)

MCL-

11-dichloroethane 1400 ppb (based on VT water quality guideline)

Since these guidelines are chemical-specific laboratory analyses of soil samples are necessary to determine soil remediation levels for the Tansitor site ERM did not submit any soil samples for laboratory analysis during this investigation although prior investigations included soil sampling and analysis in the disposal pit area (Appendix A)

Since a soil excavation or in-situ remediation would not normally extend below the water table the soil removal guidelines do not necessarily apply to samples collected below the water table Saturated contaminated sediments are generally addressed through a ground water remedial action

16 TtK

34 Hydroqeology and Water Quality

In order to assess potential impacts of the Tansitor disposal pit site EKM investigated ground and surface water conditions on and directly downgradient of the site As ground and surface water are interactive an analysis of both systems is necessary to assess potential migration of chemicals

For comparative purposes the Maximum Contaminant Levels (MCLs) used for defining drinking water quality are listed below for those chemicals present at the site

Parameter MCL (ppb)

11-dichloroethane 70 (VT guideline not an MCL) 11-dichloroethene 7 111-trichloroethane 200 trichloroethene 5 tetrachloroethene 5 (proposed MCL) chloroform 100 (total trihalomethanes)

341 Historical Water Quality

An extensive sampling history exists at the site since 1983 Although limited ground water sampling occurred primarily in nearby water supply wells a large volume of surface water quality data exists Unfortunately the surface water sampling locations were never standardized by staking locations in the field Therefore it is difficult to generate trends over time at specific locations The surface water sampling points should be considered approximate locations Appendix B contains a summary of all water samples collected at and near the Tansitor site

In terms of ground water quality results there has never been a detection of volatile organics in any of the residential water supply wells adjacent to the Tansitor site Only one sampling event (January 20 1984) indicated the possible presence of volatiles in the Tansitor tap water Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only detected once it is likely that this detection was a false positive or indicative of laboratory contamination Follow-up sampling to this investigation will address residential well water quality

17 The

Group

342 Surface Water Quality

Surface water quality results from the January 3 1989 event are summarized in Table 2 and historical data appear in Appendix B Sampling locations are shown on Figure 2 As indicated

sample S-3 is located northeast of the firepond

- sample S-7 is located at an outfall of a pipeline originating at the firepond before entering the perennial stream

samples S-ll and S-13 represent upgradient and downgradient locations respectively on the perennial stream south of Route 9 and

- sample S-16 is located at an upgradient point on the intermittent stream north of the facility

Sample S-3 had no detections of VOCs This result is different from past sampling events (Appendix B) where S-3 was the most contaminated of any of the surface water locations After discussions with VTDEC personnel it appears that the location of S-3 has varied in the past Therefore no accurate trends can be determined at this time

VOC concentrations were non-detectable in S-ll S-7 had a total of 142 ppb and S-13 had a total of 24 ppb Based on the location of sampling points it appears that chemicals are entering the stream downgradient of S-ll either from tributary surface water sources or from ground water discharge The Maximum Contaminant Level (MCL) for 11-dichloroethane (11-DCA) has not been defined however the unofficial Vermont drinking water guideline of 70 ppb was not exceeded The MCLs for 11shydichloroethene (11-DCE) and 11 1-trichloroethane (TCA) the other two chemicals detected in S-7 and S-13 were also not exceeded The MCLs are presented here for comparative purposes alone since the stream is not a likely source of drinking water

Sample S-16 collected from the on-site intermittent stream had a concentration of 16615 ppb of total volatiles which exceeds drinking water standards for all constituents detected This concentration may be due to ground water discharge from the slope north of the firepond some of which drains west into the intermittent stream The presence of tetrachloroethene (PCE) at 20 ppb which was not detected anywhere else at the site warrants further investigation in this area

18 The

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343 Ground Water Flow and Direction

Figure 4 shows a water table map across the site Table 3 summarizes the water level data Ground water flow is locally towards the southeast at the site at a gradient of approximately 0065 ftft

Flow Rates

Using the natural range of values below and the modified Darcy equation the average linear velocity for the ground water in the overburden above the clay at the site is probably between 67 ftyr and 0027 ftyr

hydraulic conductivity 10~4 to 10~7 cmsec of till (K) (after Freeze amp Cherry

1979)

hydraulic gradient (i) 0065 ftft (calculated between

ERM-1S and -5S)

effective porosity (n) 10 to 25

v = (Ki)n

Although permeability (K) data were not obtained during this initial investigation a likely value of permeability is 10~4

cmsec with an effective porosity of 20 which would result in an average linear velocity of 34 ftyr for the upper till zone Field permeability testing is warranted to refine this estimate The more compact lower till likely has a lower permeability which would result in a lower average linear velocity which could restrict contaminant transport

In terms of a sensitivity analysis for the above equation velocity and effective porosity are inversely proportional Therefore a larger effective porosity would result in a slower average linear velocity A higher permeability would result in a higher velocity Applying these velocity estimates to contaminant transport must take into account dispersion and retardation effects

Vertical Gradients

At the time that ERM measured the water levels in the monitoring wells water in ERM-5D was frozen in the casing above ground level This is due to a high water level The depth to ice can not be directly correlated to depth to water in this well because of expansion effects however the difference is not

20

tennis courts

S-l 1 1 ntsrml ttsrjlt stream

perannial stream

_EGEND

Surfccs Water Samp1e

fanitor(ng Wei 1

Water Table Elevatlor ~t above MSL)

Water Taole Contours

D1rect1 on of G^ourcwator F 1 ov

SCALE (feet)

bull00 280 300 400

N

ERM i gare 4 New Engona ~c

Tensi tor E i e c ^ r c n i c s Inc

Genera i zed

vater Tao le E eva t ion Map

for Jani^arj 3 1989

WELL

ERM IS

ERM 2S

ERM 3S

ERM 4S

ERM 5S

ERM 5D

Table 3

WATER GAUGING AND SURVEY DATA

MP ELEVATION

ft above MSL

86029

84387

82262

81995

82238

82237

DEPTH TO

WATER

ft below MP

9 10

3 46

160

348

9 00

100

TOTAL DEPTH

ft below MP

1345

1980

1620

17 75

WATER TABLE ELEVATION

ft above MSL

851 19

84041

82102

81647

813 38

82137

All measurements made on January 3 1989 by ERM

Frozen plug prevented measurement Depth to ice

The

Group

likely to exceed a couple of inches The difference in the depth to ice in ERM-5D and the depth to water in ERM-5S is about eight feet This represents a strong upward vertical gradient especially since ERM-5S is screened between 6 and 16 feet below grade and EKM-5D is screened between 27 and 32 feet below grade

Although ERM-5S and -5D are screened in similar strata based on sediment texture the blow counts increased considerably beyond 15 feet below grade indicating a tighter zone as described earlier The increased compaction with depth and the upward vertical gradient would tend to hinder the downward migration of dissolved contaminants in this area Dissolved contaminant flow is probably concentrated in the upper till layer due to these combined factors

Because of the difference in density between water and organic solvents a vertical gradient alone would not prohibit the downward migration of a DNAPL As discussed earlier however there is currently no evidence to indicate the presence of a DNAPL

344 Ground Water Quality

Organics

Table 4 is a summary of volatile organic concentrations in ground water (as determined by the VTDEC laboratory) from the on-site monitoring wells installed by ERM Figure 5 shows the generalized TCA plume at the site Five solvent-related compounds from the EPA Method 624 suite of parameters were identified in the overburden at the site Well ERM-5D was frozen above ground at the time of sampling and therefore no data is available

Of the six compounds detected at the site several are likely breakdown products of the more prevalent contaminants TCA is known to break down abiotically to 11-DCE and through biodegradation to 11-DCA The kinetics of the reactions favor the formation of 11-DCA It is likely that the remaining constituents trichloroethene (TCE) tetrachloroethene (PCE) and chloroform are virgin chemicals

The upgradient and downgradient wells EPJM-1S and -5S both had non-detectable readings of volatile organic chemicals This would indicate that no additional sources of ground water contamination exist upgradient of the disposal pit Although the non-detectable reading in ERM-5S indicates that considerable attenuation of contaminants has occurred between the disposal pit and beyond the fire pond it does not necessarily demonstrate that ERM-5S is the furthest downgradient advance of contaminants in ground water It is possible that the leading edge of contamshy

23 Thlaquo

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TCA (ODD) D or nondetsctacia

t Cancentnac

ERM F -e o Sea 1e ( Fee t )

New Erg lard 1nc

00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

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(Color- Tsxtura Structures)

(Cont see previous page)

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OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

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Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

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- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

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Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

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M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

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Length Length 7 9 Well Depth

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Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

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No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

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1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

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Dar S inches (Color Toxture Structures) and Deoth

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D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

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-50

RECOMMENDATIONS

Soil Quality

1 ERM recommends that a soil sampling program be developed for the disposal pit area and the area near ERM-1S to define the volume of contaminated soil potentially requiring remediation The purpose of this remediation would be to mitigate the effects of the disposal pit soils as a potential source area

Surface Water Quality

1 ERM recommends that quarterly sampling at specific surface water locations be performed to establish seasonal and long term trends in surface water quality This may help establish whether concentrations are diminishing over time

2 ERM recommends that hydrologic testing be performed on the perennial stream to determine whether it is in direct hydrologic contact with the underlying aquifer sediments These tests will help establish whether VOCs in the perennial stream are coming from ground or surface water discharge Tests should also be run to determine whether the water at S-7 comes from the firepond andor the intermittent stream

3 ERM recommends performing hydrologic and chemical testing in the area around S-16 to determine the source of water and contamination in the intermittent stream

Ground Water Flow

1 ERM recommends performing in-situ permeability testing on the overburden sediments to evaluate transport rates and to obtain pre-remedial design data Shelby tube sampling is also warranted in the clay to determine the hydraulic conductivity of that layer

2 To better assess vertical and horizontal gradients in deeper layers ERM recommends installing monitoring wells into bedrock for evaluating hydrogeochemical characteristics This is necessary to demonstrate whether or not the bedrock aquifer has been or could be impacted by disposal acitivites at the pit These additional wells are also recommended to better characterize the lateral and vertical extent of the clay layer

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Group

3 ERM recommends additional testing to determine the regional flow patterns into the downgradient wetlands and the effectiveness of the wetlands as a ground water discharge zone andor flow boundary

Ground Water Quality

1 ERM recommends additional wells in the area of the firepond to delineate the lateral and vertical extent of the ground water plume Hydrologic and chemical testing of the firepond sediments should be performed to define the effect of ground water quality on these sediments

2 ERM recommends additional testing or analyses to evaluate retardation and fate of contaminants downgradient of the disposal pit and to determine hydrogeologic properties of the overburden aquifer to aid in the design of a ground water remedial action if appropriate This may include but not be limited to additional wells test borings water sampling and geophysics

Interim Remedial Action

1 Consideration should be given to implementing focused on-site ground water remedial actions after additional hydrogeological and geochemical testing to control and abate the discharge of contaminated ground water to the firepond and capture further contaminant migration from the disposal pit area These interim actions should be consistent with overall remedies that might prove to be required based on the results of the additional investigations as recommended above

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10 INTRODUCTION

11 Background

Tansitor Electronics Inc notified the United States Environmental Protection Agency (EPA) in May 1981 of potential contamination at the site to comply with CERCLA Section 103(c) This action began the National Contingency Plan (NCP) process of evaluating whether the site warranted action under the Comprehensive Environmental Response Compensation and Liability Act (CERCLA) The focus of the potential CERCLA response action is a 500 square foot disposal pit behind the Tansitor facility which received solvents and dilute acid solutions between sometime after 1956 and late 1978 or early 1979 A Preliminary Assessment (PA) was completed by the Vermont Agency of Environmental Conservation (now the VTDEC) in May 1984 The EPA completed a Site Inspection (SI) in January 1987 The Tansitor site was identified in the Federal Register as a proposed National Priorities List (NPL) site in June 1988

The EPA- and DEC- estimated volume of wastes released at the disposal pit has varied between 850 gallons (used in the HRS calculations) and 500 cubic yards (101000 gallons) Although no formal records exist Tansitor believes that the latter estimates contained in the PA and SI reports are misleading and inflated based on the following information

between 50 and 150 gallons per year of primarily dilute aqueous acidic solutions were released in the disposal pit over an approximately 17 year period and

111-trichloroethane (TCA) the predominant solvent detected at the site was not used until the mid-1970s and therefore was only released over an approximately five year period

Based on this information it is improbable that 500 cubic yards of waste were released at the disposal pit It is likely that the actual volume of solvents disposed of is closer to 500 gallons (based on 100 galsyear over five years)

Tansitor contacted ERM-New England Inc (ERM) in August 1988 to evaluate the EPAs Hazard Ranking Score (HRS) ERM identified several inaccurracies during this review which were brought to the attention of the EPA in a letter dated August 10 1989 and addressed to Stephen Lingle of the EPA from Tansitor ERM then prepared a workplan for a preliminary evaluation of the disposal pit area Tansitor approved this workplan in November 1988 This report presents results of the investigation outlined in this workplan

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Key components of ERMs investigation included

compilation of a detailed site history based on correspondence between Tansitor VTDEC and EPA personnel This compilation is attached as Appendix A

compilation of a related summary of historical water quality data for the site for the period between 1983 and 1988 which is included as Appendix B to this report and

- installation and sampling of monitoring wells and preparation of well logs in Appendix C

12 Purpose and Scope

The purpose of the investigation was to

1 determine the type and amounts of chemicals disposed in the disposal pit on the northern side of the site

2 obtain information to aid in evaluating the vertical and lateral extent of Volatile Organic Compounds (VOCs)

in ground and surface water and

3 evaluate on a preliminary basis the potential environmental risks associated with the disposal pit

The scope of work is intended to provide a preliminary characterization of site contamination downgradient of the

disposal pit and is not intended to fully characterize the site No other areas on site were evaluated Additional studies may be

necessary to completely evaluate soil and ground water quality at the site

ERMs November 1988 workplan identified a fourth purpose which was to characterize VOCs in the pit area The proposed location of ERM-2S in the pit area which would have addressed this purpose was altered after discussions with Tansitor personnel Since a soil remediation activity in the pit area is a probable outcome the location of ERM-2S was moved to a position downgradient of the pit so as not to be destroyed if soil is removed as part of a remedial activity

ERM contracted Alceon Corporation to evaluate the current data base relative to public health and environmental risk Due to the limited data available the preliminary evaluation of risk

was inconclusive Additional sampling events will address data gaps identified during this evaluation 1

A brief summary of the work scope follows ERM performed the following seven tasks to accomplish the goals of this investigation

Task 1 Task 2 Task 3 Task 4 Task 5 Task 6 Task 7

Review Existing Records Prepare a Health and Safety Plan Install Monitoring Wells Collect Samples and Survey Compile and Analyze Data Prepare Report Project Management

Results of this investigation do not include design of any remedial measures engineering cost estimates or comprehensive evaluation of potential risks

13 Site Description

Tansitor Electronics Inc is a manufacturer of electronic capacitors The Tansitor property is approximately 36 acres in size located in the Town of Bennington Vermont The site is in

91 the southwestern part of the state approximately 10 miles north of the Massachusetts border and approximately 06 miles east of the New York border (Figure 1)

The Tansitor property consists of the main manufacturing facility offices etch house parking areas open land and fire pond (Figure 2) The disposal pit lies approximately 400 feet upslope of the manufacturing building at an elevation of approximately 850 feet above Mean Sea Level (MSL) The firepond is 100 feet east of the manufacturing building and approximately 300 feet south of the disposal pit The firepond lies at the base of the slope below the disposal pit at an elevation of approximately 815 feet above MSL This pond serves as the primary source of water for the Bennington Fire Department during fires located west of Bennington

The surrounding area east and west of the site is primarily ruralresidential All of the nearby residents use ground water from the bedrock aquifer as their sole water source Whipstock Hill rises north of (behind) the facility A wetland exists on Tansitor property south of Route 9 in a stream valley which drains to the west An unnamed hill rises over 1900 feet above MSL south of the wetlands

The facility is over thirty years old and currently employs 184 people in the manufacture of tantalum electrolytic capacitors and chip type solid tantalum capacitors Production operations include

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- pressing of tantalum powder into pellets (anodes or cathodes)

- sintering in vacuum furnaces and anodizing the pellets using highly diluted solutions of nitric sulfuric and phosphoric acids and glycol

assembling the anodes and cathodes in tantalum silver or aluminum cases and

Completion of these assemblies using various welding technigues and custom built machinery

The electronic capacitors manufactured by Tansitor consist mainly of silver tantalum and palladium metals The process wastes generated from the manufacturing of these capacitors include metal plating solutions cleaning solvents degreasers and dilute acidcaustic solutions

The EPA has estimated that between 50 and 150 gallons per year of these wastes were disposed in an unlined disposal pit north of the facility between sometime after 1956 and late 1978 or early 1979 However chlorinated organic solvents primarily 111-trichloroethane were not used or disposed at the site until the mid-1970s

Ground water seeps discharge from the base of the slope south (downgradient) of the disposal pit Historical sampling in this area has shown elevated readings of VOCs The firepond at the base of the slope receives ground water discharge and has likewise been determined to contain elevated levels of VOCs The primary VOCs detected at the site to date have been 111-shytrichloroethane (TCA) and related chlorinated solvents

A detailed site history based on ERMs interviews and records review is presented in Appendix A

20 Methodology

The methodology used was in conformance to ASTM and EPA guidance documents ERM installed six monitoring wells and collected ground and surface water and soil samples during the winter of 198889 Field screening for VOCs was conducted on the split spoon soil samples from the soil borings No soil samples were delivered to a laboratory for analysis

ERM delivered water samples collected on January 3 1989 to Eastern Analytical Laboratories Inc of North Billerica Massachusetts for analysis (the resulting data were later shown to be invalid and thus were not used) VTDEC personnel delivered split water samples to the VTDEC laboratory for analysis The split VTDEC data are discussed exclusively in this report

Water samples were taken from two sources

ground water samples from the five shallow monitoring wells and

surface water samples from five historical sampling points

21 Monitoring Well Installations

211 Locations

Six wells were installed in five locations on the Tansitor Property (Figure 2) Well numbers followed by an S indicate a shallow overburden well with total depth less than 20 feet and well numbers followed by a D indicate deep overburden wells completed above the glacio-lacustrine clay layer

Well Location Purpose

ERM-1S About 75 north of Intended to be for background the disposal pit concentrations

ERM-2S About 150 south- Assess localized contaminant southwest of the transport and vertical disposal site distribution in the soil

ERM-3S Downgradient of pit Evaluate potential flow around at northeast corner the eastern side of the fire of the fire pond pond

The

ERM-4S About 400 south ofERM-2S at the northwest

Evaluate potential flow around the western side of the fire

corner of the fire pond pond

EKM-5S Southeast side offire pond

To assess shallow transport beyond the fire pond and

vertical flow

ERM-5D Southeast side of To assess deep transport fire pond underneath the fire pond

and vertical flow

212 Drilling Methodology

ERM subcontracted with CATOH Environmental Companies Inc of Albany NY for drilling services Several different drilling methods were used depending upon the soil type and total well depth Precautions were taken to assure that no cross contamination between aquifers occurred during drilling A Mobile B-61 Drill Rig capable of both rotary and hollow stem auger drilling was used Appendix C includes detailed drilling logs graphic logs and well construction diagrams

Well ERM-1S was drilled to a depth of 17 feet and wells ERM-3S 4S and 5S were drilled to 18 feet deep using 425 inch ID hollow stem augers

Well ERM-2S was begun using 625 inch inner diameter (ID) hollow stem augers (HSA) An increase in soil compaction required a change to rotary drilling at a depth of 34 feet Air rotary with a nominal six inch diameter tricone bit was used from 34 to 39 feet below ground surface Sand began to clog the bit at a depth of 39 feet Nominal four inch diameter steel casing was driven to 39 feet and the drilling method was changed to wash rotary with a nominal four inch diameter tricone bit The casing kept the sand from caving into the boring and sealed off the potentially contaminated soils above 39 feet from the deeper soils Wash rotary drilling was continued until the final boring depth 60 feet was achieved This boring was filled up to 19 feet below grade with bentonite to complete the well in the most contaminated zone based on the field screening of split spoon sediments

Monitoring well ERM-5D was drilled with 625 inch ID HSA to a depth of 20 feet An increase in soil density required a change in drilling method to wash rotary using a nominal four inch diameter tricone bit At a depth of 37 feet sand began to fill the boring and nominal four inch diameter steel casing was driven to a depth of 35 feet As with well ERM-2S the casing isolated the surface sediments The final depth of this boring was 57 feet however the boring was backfilled with bentonite up to 34 feet below grade above which the well was completed

213 Soil Sampling and Analysis

ERM performed standard split spoon sampling in accordance with ASTM standards (at intervals of five feet) in all soil borings during drilling An ERM hydrogeologist logged all samples describing all lithologic variations Samples were then stored in glass jars covered with aluminum foil capped and labelled Name of sample date time depth and blowcounts are labelled on each jar

ERM screened soil samples via headspace analysis using a portable field detector for organic vapors Either a photoionization detector (HNU PI-101) or a flame ionization detector (Foxboro Instruments OVA Model 128) was used In most cases organic vapors were measured both when the split spoon was opened and 24 hours later The 24 hour measurement is taken from the headspace by puncturing the aluminum foil in the sample jar after the sample is allowed to equilibrate at room temperature No soil samples were delivered to a laboratory for analysis

214 Well Construction

Following completion of the borings to total depth a one to two foot thick sandpack was added as a foundation for the well casing and to prevent the clogging of the screen with fine material from the formation In ERM-2S and -5D bentonite was used to fill in the borings from 60 to 19 feet below grade and 57 to 34 feet below grade respectively prior to the addition of the sandpack This was done so that the well screens could be set in the zone of highest contamination based on field screening

Two-inch diameter 0020 inch slot 304 stainless steel screen and riser were used for well construction Five feet of slotted screen was used in ERM-5D Ten feet of slotted screen was used in each of the shallow overburden wells Stainless steel centralizers were used in all wells to ensure that the screen was vertical and that the well was located in the center of the boring

The sandpack was deposited around the screened interval and extended approximately two feet above the top of the screen A bentonite pellet layer was then deposited above the sandpack to form a two-to-five foot seal A bentonite-cement grout was used to seal the remainder of the boring The top three to five feet of the boring consisted of Portland cement to provide a strong foundation for a protective steel casing The stainless steel risers protrude approximately two feet above the ground surface The protective casings are secured with locking caps

CATOH Environmental developed the wells following completion by pumping water from the well until the water became clear

22 Surveying Gauging and Collecting Water Samples

ERM subcontracted Gerald E Morrissey Inc of Bennington Vermont to survey all monitoring well locations at the site to a US Coast amp Geodetic Survey datum Elevations at the ground surface the top of the outer well casing and the top inner stainless steel pipe casing were measured

Prior to any ground water sampling an ERM hydrogeologist measured static water levels to the nearest one-hundredth of a foot The water in ERM-5D was frozen but a measurement was taken to the top of the ice Total depth was measured in all wells but ERM-5D and -3S A plug of ice prohibited measurement of total depth in ERM-3S

An ERM hydrogeologist evacuated at least three well volumes of water from the wells using dedicated bottom filling PVC bailers VTDEC personnel then collected samples for analysis of volatile organics by EPA Method 601602 In addition the Vermont DEC collected samples for analysis of priority pollutant metals

Surface water samples were collected by submersing vials and jars in the streams as designated on Figure 2 Analysis of surface water samples was identical to that of ground water samples

ERM collected samples which were delivered to Eastern Analytical Laboratories Inc (EAL) of North Billerica Massachusetts Because of maintenance being performed on EALs GCMS the samples were delivered to Toxicon Laboratories of Woburn Massachusetts The resulting data were determined by ERM to be invalid due to poor intralab chain-of-custody protocols at Toxicon and inconsistencies in laboratory procedures by Toxicon personnel

30 RESULTS AND DISCUSSION

3 1 Physiography and Regional Geology

The Tansitor site is in the southwestern corner of Vermont (Figure 1) in the Taconic Range This area is in the Hudson River basin The site is at the southern base of Whipstock Hill approximately 35 miles west of the center of Bennington Vermont An unnamed hill lies directly south across the valley

The geology of the vicinity is characterized by an overburden of glacial materials underlain by Walloomsic Slate No bedrock outcrops were observed on site The valley in which Tansitor is located was part of a glacial lake when recessional moraines blocked the valley drainage to the west A glacioshylacustrine clay deposit formed in the lake bottom and was later covered with till The extent of this clay is not well-documented in the literature

It is unclear whether this clay layer is continuous across the valley and whether it would act as an effective barrier to downward migration of contaminants into the bedrock ag_uifer The EPAs Site Inspection report states that the depth to bedrock (slate) at the Severs1 property 600 feet west of the site is 80 feet which if correct would indicate the absence of an effective clay layer at that location However if the wetlands or stream south of Route 9 represent a ground water discharge zone the presence of a limited on-site clay layer could prevent migration of contaminants into the bedrock These issues will be resolved in future investigations

The topographic slope is to the southeast An unnamed perennial stream is located across Route 9 from the site and flows towards the southwest for about 05 miles before entering Browns Brook which flows west about four miles before entering the Hoosic River An intermittent stream begins near the northeastern corner of the main building and joins the perennial stream in the wetland south of the site

3 2 Site Geology

The overburden at the Tansitor site consists of glacial tills and glacio-lacustrine clays Figure 3a shows the location of an on-site cross-section Figure 3b is a generalized cross-section for the site The till matrix is primarily mixed clays and silts with up to 40 percent sand and gravel In general till compaction increases with depth and with an increase in clay content The exact thickness of the overburden is unknown Sorption of contaminants onto the overburden sediments is likely enhanced by the high clay content of the till which could retard the movement of the contaminants

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A compact orange silty clay of glacio-lacustrine origin was found in both ERM-2S and ERM-5D at respective depths of 44 and 50 feet below grade (798 and 770 feet above Mean Sea Level) The thickness of this layer is a minimum of seven feet at ERM-5D and a minimum of 18 feet at ERM-2S (both borings were halted before the clays were completely penetrated) The other shallow wells were not advanced deep enough to intercept the clay layer

Within the till layer in ERM-2S and -5D a significant increase in the number of blow counts occurred at 10 and 15 feet respectively This reflects an increase in sediment compaction at these depths Since the sediment texture is the same above and below these intervals it is likely that the upper layer represents disturbed sediments possibly a collapse or slump structure

A lens of gray clay was found between 10 and 12 feet below ground level in ERM-4S The degree to which this may act as an impermeable barrier depends in part on the lateral extent of the clay lens

Both ERM-4S and -5D have seams of fine sand bedded with the silty clays At ERM-2S a three foot diameter boulder was intersected

Bedrock was not encountered in any of the borings Contrary to prior reports bedrock does not appear to outcrop in the immediate vicinity of the disposal pit The only bedrock outcrops observed were on the northern side of Whipstock Hill far upgradient of the site

3 3 Soil Quality

Previous soil sampling by Tansitor in the disposal pit area is described in Appendix A No additional sampling in this area was performed by ERM Results of ERMs field screening of split spoon soil samples are shown in Table 1 As indicated only one sample at the zero to 20 foot depth from the ERM-1S boring had a detection using an HNU meter The reading of 20 ppm could be due to the moisture content of the soil or the presence of VOCs Only laboratory or other more accurate analysis could confirm the presence of VOCs Future soil sampling in the disposal pit area should address this issue

In boring ERM-2S all samples between 50 and 44 feet below grade had detections of volatile organics The highest concentrations in this boring were detected between 50 and 12 feet below ground level (up to 700 ppm) At 44 feet below grade a tight clay was encountered and no volatiles were detected below this point The spoon collected above the clay layer at 40 to 42 feet below grade had a concentration of 50 ppm which is

14

Table 1

Results of Field Screening of Split Spoon Sediments

(ppm)

24 HOUR 24 HOUR

WELL NO DEPTH ON SITE HEADSPACE WELL NO DEPTH ON SITE HEADSPACE

1S 0-2 2 4S 0-2 ND ND

5-7 ND ND 5-7 lt1 ND

10-12 ND ND 10-12 ND ND

15-17 ND ND 15-17 ND ND

18-20 ND ND

2S 0-2 ND

5-7 -shy gt100 5D 0-2 ND

10-12 -shy 700 5-7 -- 3

15-17 -shy 85 10-12 -- 1

20-22 -shy 4 15-17 NO ND

25-27 -shy 6 20-22 ND ND

30-32 -shy 10 25-27 NO ND

325-34 -shy 65 30-32 80 ND

39-40 -shy 30 35-37 ND NO

40-42 -shy 5 40-42 ND ND

45-47 NO ND 45-47 ND NO

50-52 ND ND 50-52 ND NO

55-57 ND ND 55-57 NO ND

60-62 ND

-shy INDICATES THAT NO READING WAS TAKEN

3S 0-2 ND ND

5-7 ND ND ONLY PEAK CONCENTRATIONS ARE LISTED

10-12 ND ND

I | 15-17 I lt1 ND

I | 18-20 I lt1 2

The

significantly below the peak concentrations in the boring This concentration which is far below the solubility limit of the VOCs detected at the site would indicate that a Dense Non-Aqueous Phase Liquid (DNAPL) is not present above the clay layer at this location Based on these readings the well screen for EPxM-2S was set between 70 and 17 feet below grade

ERM-3S had minor detections between 15 and 20 feet below grade of 20 ppm or less ERM-4S had a trace detection at the 50 to 70 foot interval of less than 10 ppm Similarly concentrations of 30 ppm or less were detected between 50 and 12 feet below grade in ERM-5D

The Vermont unofficial unpublished guidelines for soil removal are based on RCPJV landban requirements The general guidance is to multiply the landban concentration by a factor of 20 In the absence of a landban value the MCL multiplied by a factor of 20 should be used For constituents at the site the following guidelines may be applicable

Consituent Remediation Guideline

111-trichloroethane 8200 ppb (landban-based)

trichloroethene 100 ppb (MCL-based)

chloroform 2000 ppb (MCL-based)

11-dichloroethene 140 ppb (MCL-based)

tetrachloroethene 100 ppb ( p r o p o s e d based)

MCL-

11-dichloroethane 1400 ppb (based on VT water quality guideline)

Since these guidelines are chemical-specific laboratory analyses of soil samples are necessary to determine soil remediation levels for the Tansitor site ERM did not submit any soil samples for laboratory analysis during this investigation although prior investigations included soil sampling and analysis in the disposal pit area (Appendix A)

Since a soil excavation or in-situ remediation would not normally extend below the water table the soil removal guidelines do not necessarily apply to samples collected below the water table Saturated contaminated sediments are generally addressed through a ground water remedial action

16 TtK

34 Hydroqeology and Water Quality

In order to assess potential impacts of the Tansitor disposal pit site EKM investigated ground and surface water conditions on and directly downgradient of the site As ground and surface water are interactive an analysis of both systems is necessary to assess potential migration of chemicals

For comparative purposes the Maximum Contaminant Levels (MCLs) used for defining drinking water quality are listed below for those chemicals present at the site

Parameter MCL (ppb)

11-dichloroethane 70 (VT guideline not an MCL) 11-dichloroethene 7 111-trichloroethane 200 trichloroethene 5 tetrachloroethene 5 (proposed MCL) chloroform 100 (total trihalomethanes)

341 Historical Water Quality

An extensive sampling history exists at the site since 1983 Although limited ground water sampling occurred primarily in nearby water supply wells a large volume of surface water quality data exists Unfortunately the surface water sampling locations were never standardized by staking locations in the field Therefore it is difficult to generate trends over time at specific locations The surface water sampling points should be considered approximate locations Appendix B contains a summary of all water samples collected at and near the Tansitor site

In terms of ground water quality results there has never been a detection of volatile organics in any of the residential water supply wells adjacent to the Tansitor site Only one sampling event (January 20 1984) indicated the possible presence of volatiles in the Tansitor tap water Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only detected once it is likely that this detection was a false positive or indicative of laboratory contamination Follow-up sampling to this investigation will address residential well water quality

17 The

Group

342 Surface Water Quality

Surface water quality results from the January 3 1989 event are summarized in Table 2 and historical data appear in Appendix B Sampling locations are shown on Figure 2 As indicated

sample S-3 is located northeast of the firepond

- sample S-7 is located at an outfall of a pipeline originating at the firepond before entering the perennial stream

samples S-ll and S-13 represent upgradient and downgradient locations respectively on the perennial stream south of Route 9 and

- sample S-16 is located at an upgradient point on the intermittent stream north of the facility

Sample S-3 had no detections of VOCs This result is different from past sampling events (Appendix B) where S-3 was the most contaminated of any of the surface water locations After discussions with VTDEC personnel it appears that the location of S-3 has varied in the past Therefore no accurate trends can be determined at this time

VOC concentrations were non-detectable in S-ll S-7 had a total of 142 ppb and S-13 had a total of 24 ppb Based on the location of sampling points it appears that chemicals are entering the stream downgradient of S-ll either from tributary surface water sources or from ground water discharge The Maximum Contaminant Level (MCL) for 11-dichloroethane (11-DCA) has not been defined however the unofficial Vermont drinking water guideline of 70 ppb was not exceeded The MCLs for 11shydichloroethene (11-DCE) and 11 1-trichloroethane (TCA) the other two chemicals detected in S-7 and S-13 were also not exceeded The MCLs are presented here for comparative purposes alone since the stream is not a likely source of drinking water

Sample S-16 collected from the on-site intermittent stream had a concentration of 16615 ppb of total volatiles which exceeds drinking water standards for all constituents detected This concentration may be due to ground water discharge from the slope north of the firepond some of which drains west into the intermittent stream The presence of tetrachloroethene (PCE) at 20 ppb which was not detected anywhere else at the site warrants further investigation in this area

18 The

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343 Ground Water Flow and Direction

Figure 4 shows a water table map across the site Table 3 summarizes the water level data Ground water flow is locally towards the southeast at the site at a gradient of approximately 0065 ftft

Flow Rates

Using the natural range of values below and the modified Darcy equation the average linear velocity for the ground water in the overburden above the clay at the site is probably between 67 ftyr and 0027 ftyr

hydraulic conductivity 10~4 to 10~7 cmsec of till (K) (after Freeze amp Cherry

1979)

hydraulic gradient (i) 0065 ftft (calculated between

ERM-1S and -5S)

effective porosity (n) 10 to 25

v = (Ki)n

Although permeability (K) data were not obtained during this initial investigation a likely value of permeability is 10~4

cmsec with an effective porosity of 20 which would result in an average linear velocity of 34 ftyr for the upper till zone Field permeability testing is warranted to refine this estimate The more compact lower till likely has a lower permeability which would result in a lower average linear velocity which could restrict contaminant transport

In terms of a sensitivity analysis for the above equation velocity and effective porosity are inversely proportional Therefore a larger effective porosity would result in a slower average linear velocity A higher permeability would result in a higher velocity Applying these velocity estimates to contaminant transport must take into account dispersion and retardation effects

Vertical Gradients

At the time that ERM measured the water levels in the monitoring wells water in ERM-5D was frozen in the casing above ground level This is due to a high water level The depth to ice can not be directly correlated to depth to water in this well because of expansion effects however the difference is not

20

tennis courts

S-l 1 1 ntsrml ttsrjlt stream

perannial stream

_EGEND

Surfccs Water Samp1e

fanitor(ng Wei 1

Water Table Elevatlor ~t above MSL)

Water Taole Contours

D1rect1 on of G^ourcwator F 1 ov

SCALE (feet)

bull00 280 300 400

N

ERM i gare 4 New Engona ~c

Tensi tor E i e c ^ r c n i c s Inc

Genera i zed

vater Tao le E eva t ion Map

for Jani^arj 3 1989

WELL

ERM IS

ERM 2S

ERM 3S

ERM 4S

ERM 5S

ERM 5D

Table 3

WATER GAUGING AND SURVEY DATA

MP ELEVATION

ft above MSL

86029

84387

82262

81995

82238

82237

DEPTH TO

WATER

ft below MP

9 10

3 46

160

348

9 00

100

TOTAL DEPTH

ft below MP

1345

1980

1620

17 75

WATER TABLE ELEVATION

ft above MSL

851 19

84041

82102

81647

813 38

82137

All measurements made on January 3 1989 by ERM

Frozen plug prevented measurement Depth to ice

The

Group

likely to exceed a couple of inches The difference in the depth to ice in ERM-5D and the depth to water in ERM-5S is about eight feet This represents a strong upward vertical gradient especially since ERM-5S is screened between 6 and 16 feet below grade and EKM-5D is screened between 27 and 32 feet below grade

Although ERM-5S and -5D are screened in similar strata based on sediment texture the blow counts increased considerably beyond 15 feet below grade indicating a tighter zone as described earlier The increased compaction with depth and the upward vertical gradient would tend to hinder the downward migration of dissolved contaminants in this area Dissolved contaminant flow is probably concentrated in the upper till layer due to these combined factors

Because of the difference in density between water and organic solvents a vertical gradient alone would not prohibit the downward migration of a DNAPL As discussed earlier however there is currently no evidence to indicate the presence of a DNAPL

344 Ground Water Quality

Organics

Table 4 is a summary of volatile organic concentrations in ground water (as determined by the VTDEC laboratory) from the on-site monitoring wells installed by ERM Figure 5 shows the generalized TCA plume at the site Five solvent-related compounds from the EPA Method 624 suite of parameters were identified in the overburden at the site Well ERM-5D was frozen above ground at the time of sampling and therefore no data is available

Of the six compounds detected at the site several are likely breakdown products of the more prevalent contaminants TCA is known to break down abiotically to 11-DCE and through biodegradation to 11-DCA The kinetics of the reactions favor the formation of 11-DCA It is likely that the remaining constituents trichloroethene (TCE) tetrachloroethene (PCE) and chloroform are virgin chemicals

The upgradient and downgradient wells EPJM-1S and -5S both had non-detectable readings of volatile organic chemicals This would indicate that no additional sources of ground water contamination exist upgradient of the disposal pit Although the non-detectable reading in ERM-5S indicates that considerable attenuation of contaminants has occurred between the disposal pit and beyond the fire pond it does not necessarily demonstrate that ERM-5S is the furthest downgradient advance of contaminants in ground water It is possible that the leading edge of contamshy

23 Thlaquo

Group

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perennial strsam

Surface Wcw2r~ Sample

N 100

Mom tor irg We I

TCA (ODD) D or nondetsctacia

t Cancentnac

ERM F -e o Sea 1e ( Fee t )

New Erg lard 1nc

00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

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Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

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24shy

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26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

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1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

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Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

3 ERM recommends additional testing to determine the regional flow patterns into the downgradient wetlands and the effectiveness of the wetlands as a ground water discharge zone andor flow boundary

Ground Water Quality

1 ERM recommends additional wells in the area of the firepond to delineate the lateral and vertical extent of the ground water plume Hydrologic and chemical testing of the firepond sediments should be performed to define the effect of ground water quality on these sediments

2 ERM recommends additional testing or analyses to evaluate retardation and fate of contaminants downgradient of the disposal pit and to determine hydrogeologic properties of the overburden aquifer to aid in the design of a ground water remedial action if appropriate This may include but not be limited to additional wells test borings water sampling and geophysics

Interim Remedial Action

1 Consideration should be given to implementing focused on-site ground water remedial actions after additional hydrogeological and geochemical testing to control and abate the discharge of contaminated ground water to the firepond and capture further contaminant migration from the disposal pit area These interim actions should be consistent with overall remedies that might prove to be required based on the results of the additional investigations as recommended above

Vlll

Group

10 INTRODUCTION

11 Background

Tansitor Electronics Inc notified the United States Environmental Protection Agency (EPA) in May 1981 of potential contamination at the site to comply with CERCLA Section 103(c) This action began the National Contingency Plan (NCP) process of evaluating whether the site warranted action under the Comprehensive Environmental Response Compensation and Liability Act (CERCLA) The focus of the potential CERCLA response action is a 500 square foot disposal pit behind the Tansitor facility which received solvents and dilute acid solutions between sometime after 1956 and late 1978 or early 1979 A Preliminary Assessment (PA) was completed by the Vermont Agency of Environmental Conservation (now the VTDEC) in May 1984 The EPA completed a Site Inspection (SI) in January 1987 The Tansitor site was identified in the Federal Register as a proposed National Priorities List (NPL) site in June 1988

The EPA- and DEC- estimated volume of wastes released at the disposal pit has varied between 850 gallons (used in the HRS calculations) and 500 cubic yards (101000 gallons) Although no formal records exist Tansitor believes that the latter estimates contained in the PA and SI reports are misleading and inflated based on the following information

between 50 and 150 gallons per year of primarily dilute aqueous acidic solutions were released in the disposal pit over an approximately 17 year period and

111-trichloroethane (TCA) the predominant solvent detected at the site was not used until the mid-1970s and therefore was only released over an approximately five year period

Based on this information it is improbable that 500 cubic yards of waste were released at the disposal pit It is likely that the actual volume of solvents disposed of is closer to 500 gallons (based on 100 galsyear over five years)

Tansitor contacted ERM-New England Inc (ERM) in August 1988 to evaluate the EPAs Hazard Ranking Score (HRS) ERM identified several inaccurracies during this review which were brought to the attention of the EPA in a letter dated August 10 1989 and addressed to Stephen Lingle of the EPA from Tansitor ERM then prepared a workplan for a preliminary evaluation of the disposal pit area Tansitor approved this workplan in November 1988 This report presents results of the investigation outlined in this workplan

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Key components of ERMs investigation included

compilation of a detailed site history based on correspondence between Tansitor VTDEC and EPA personnel This compilation is attached as Appendix A

compilation of a related summary of historical water quality data for the site for the period between 1983 and 1988 which is included as Appendix B to this report and

- installation and sampling of monitoring wells and preparation of well logs in Appendix C

12 Purpose and Scope

The purpose of the investigation was to

1 determine the type and amounts of chemicals disposed in the disposal pit on the northern side of the site

2 obtain information to aid in evaluating the vertical and lateral extent of Volatile Organic Compounds (VOCs)

in ground and surface water and

3 evaluate on a preliminary basis the potential environmental risks associated with the disposal pit

The scope of work is intended to provide a preliminary characterization of site contamination downgradient of the

disposal pit and is not intended to fully characterize the site No other areas on site were evaluated Additional studies may be

necessary to completely evaluate soil and ground water quality at the site

ERMs November 1988 workplan identified a fourth purpose which was to characterize VOCs in the pit area The proposed location of ERM-2S in the pit area which would have addressed this purpose was altered after discussions with Tansitor personnel Since a soil remediation activity in the pit area is a probable outcome the location of ERM-2S was moved to a position downgradient of the pit so as not to be destroyed if soil is removed as part of a remedial activity

ERM contracted Alceon Corporation to evaluate the current data base relative to public health and environmental risk Due to the limited data available the preliminary evaluation of risk

was inconclusive Additional sampling events will address data gaps identified during this evaluation 1

A brief summary of the work scope follows ERM performed the following seven tasks to accomplish the goals of this investigation

Task 1 Task 2 Task 3 Task 4 Task 5 Task 6 Task 7

Review Existing Records Prepare a Health and Safety Plan Install Monitoring Wells Collect Samples and Survey Compile and Analyze Data Prepare Report Project Management

Results of this investigation do not include design of any remedial measures engineering cost estimates or comprehensive evaluation of potential risks

13 Site Description

Tansitor Electronics Inc is a manufacturer of electronic capacitors The Tansitor property is approximately 36 acres in size located in the Town of Bennington Vermont The site is in

91 the southwestern part of the state approximately 10 miles north of the Massachusetts border and approximately 06 miles east of the New York border (Figure 1)

The Tansitor property consists of the main manufacturing facility offices etch house parking areas open land and fire pond (Figure 2) The disposal pit lies approximately 400 feet upslope of the manufacturing building at an elevation of approximately 850 feet above Mean Sea Level (MSL) The firepond is 100 feet east of the manufacturing building and approximately 300 feet south of the disposal pit The firepond lies at the base of the slope below the disposal pit at an elevation of approximately 815 feet above MSL This pond serves as the primary source of water for the Bennington Fire Department during fires located west of Bennington

The surrounding area east and west of the site is primarily ruralresidential All of the nearby residents use ground water from the bedrock aquifer as their sole water source Whipstock Hill rises north of (behind) the facility A wetland exists on Tansitor property south of Route 9 in a stream valley which drains to the west An unnamed hill rises over 1900 feet above MSL south of the wetlands

The facility is over thirty years old and currently employs 184 people in the manufacture of tantalum electrolytic capacitors and chip type solid tantalum capacitors Production operations include

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- pressing of tantalum powder into pellets (anodes or cathodes)

- sintering in vacuum furnaces and anodizing the pellets using highly diluted solutions of nitric sulfuric and phosphoric acids and glycol

assembling the anodes and cathodes in tantalum silver or aluminum cases and

Completion of these assemblies using various welding technigues and custom built machinery

The electronic capacitors manufactured by Tansitor consist mainly of silver tantalum and palladium metals The process wastes generated from the manufacturing of these capacitors include metal plating solutions cleaning solvents degreasers and dilute acidcaustic solutions

The EPA has estimated that between 50 and 150 gallons per year of these wastes were disposed in an unlined disposal pit north of the facility between sometime after 1956 and late 1978 or early 1979 However chlorinated organic solvents primarily 111-trichloroethane were not used or disposed at the site until the mid-1970s

Ground water seeps discharge from the base of the slope south (downgradient) of the disposal pit Historical sampling in this area has shown elevated readings of VOCs The firepond at the base of the slope receives ground water discharge and has likewise been determined to contain elevated levels of VOCs The primary VOCs detected at the site to date have been 111-shytrichloroethane (TCA) and related chlorinated solvents

A detailed site history based on ERMs interviews and records review is presented in Appendix A

20 Methodology

The methodology used was in conformance to ASTM and EPA guidance documents ERM installed six monitoring wells and collected ground and surface water and soil samples during the winter of 198889 Field screening for VOCs was conducted on the split spoon soil samples from the soil borings No soil samples were delivered to a laboratory for analysis

ERM delivered water samples collected on January 3 1989 to Eastern Analytical Laboratories Inc of North Billerica Massachusetts for analysis (the resulting data were later shown to be invalid and thus were not used) VTDEC personnel delivered split water samples to the VTDEC laboratory for analysis The split VTDEC data are discussed exclusively in this report

Water samples were taken from two sources

ground water samples from the five shallow monitoring wells and

surface water samples from five historical sampling points

21 Monitoring Well Installations

211 Locations

Six wells were installed in five locations on the Tansitor Property (Figure 2) Well numbers followed by an S indicate a shallow overburden well with total depth less than 20 feet and well numbers followed by a D indicate deep overburden wells completed above the glacio-lacustrine clay layer

Well Location Purpose

ERM-1S About 75 north of Intended to be for background the disposal pit concentrations

ERM-2S About 150 south- Assess localized contaminant southwest of the transport and vertical disposal site distribution in the soil

ERM-3S Downgradient of pit Evaluate potential flow around at northeast corner the eastern side of the fire of the fire pond pond

The

ERM-4S About 400 south ofERM-2S at the northwest

Evaluate potential flow around the western side of the fire

corner of the fire pond pond

EKM-5S Southeast side offire pond

To assess shallow transport beyond the fire pond and

vertical flow

ERM-5D Southeast side of To assess deep transport fire pond underneath the fire pond

and vertical flow

212 Drilling Methodology

ERM subcontracted with CATOH Environmental Companies Inc of Albany NY for drilling services Several different drilling methods were used depending upon the soil type and total well depth Precautions were taken to assure that no cross contamination between aquifers occurred during drilling A Mobile B-61 Drill Rig capable of both rotary and hollow stem auger drilling was used Appendix C includes detailed drilling logs graphic logs and well construction diagrams

Well ERM-1S was drilled to a depth of 17 feet and wells ERM-3S 4S and 5S were drilled to 18 feet deep using 425 inch ID hollow stem augers

Well ERM-2S was begun using 625 inch inner diameter (ID) hollow stem augers (HSA) An increase in soil compaction required a change to rotary drilling at a depth of 34 feet Air rotary with a nominal six inch diameter tricone bit was used from 34 to 39 feet below ground surface Sand began to clog the bit at a depth of 39 feet Nominal four inch diameter steel casing was driven to 39 feet and the drilling method was changed to wash rotary with a nominal four inch diameter tricone bit The casing kept the sand from caving into the boring and sealed off the potentially contaminated soils above 39 feet from the deeper soils Wash rotary drilling was continued until the final boring depth 60 feet was achieved This boring was filled up to 19 feet below grade with bentonite to complete the well in the most contaminated zone based on the field screening of split spoon sediments

Monitoring well ERM-5D was drilled with 625 inch ID HSA to a depth of 20 feet An increase in soil density required a change in drilling method to wash rotary using a nominal four inch diameter tricone bit At a depth of 37 feet sand began to fill the boring and nominal four inch diameter steel casing was driven to a depth of 35 feet As with well ERM-2S the casing isolated the surface sediments The final depth of this boring was 57 feet however the boring was backfilled with bentonite up to 34 feet below grade above which the well was completed

213 Soil Sampling and Analysis

ERM performed standard split spoon sampling in accordance with ASTM standards (at intervals of five feet) in all soil borings during drilling An ERM hydrogeologist logged all samples describing all lithologic variations Samples were then stored in glass jars covered with aluminum foil capped and labelled Name of sample date time depth and blowcounts are labelled on each jar

ERM screened soil samples via headspace analysis using a portable field detector for organic vapors Either a photoionization detector (HNU PI-101) or a flame ionization detector (Foxboro Instruments OVA Model 128) was used In most cases organic vapors were measured both when the split spoon was opened and 24 hours later The 24 hour measurement is taken from the headspace by puncturing the aluminum foil in the sample jar after the sample is allowed to equilibrate at room temperature No soil samples were delivered to a laboratory for analysis

214 Well Construction

Following completion of the borings to total depth a one to two foot thick sandpack was added as a foundation for the well casing and to prevent the clogging of the screen with fine material from the formation In ERM-2S and -5D bentonite was used to fill in the borings from 60 to 19 feet below grade and 57 to 34 feet below grade respectively prior to the addition of the sandpack This was done so that the well screens could be set in the zone of highest contamination based on field screening

Two-inch diameter 0020 inch slot 304 stainless steel screen and riser were used for well construction Five feet of slotted screen was used in ERM-5D Ten feet of slotted screen was used in each of the shallow overburden wells Stainless steel centralizers were used in all wells to ensure that the screen was vertical and that the well was located in the center of the boring

The sandpack was deposited around the screened interval and extended approximately two feet above the top of the screen A bentonite pellet layer was then deposited above the sandpack to form a two-to-five foot seal A bentonite-cement grout was used to seal the remainder of the boring The top three to five feet of the boring consisted of Portland cement to provide a strong foundation for a protective steel casing The stainless steel risers protrude approximately two feet above the ground surface The protective casings are secured with locking caps

CATOH Environmental developed the wells following completion by pumping water from the well until the water became clear

22 Surveying Gauging and Collecting Water Samples

ERM subcontracted Gerald E Morrissey Inc of Bennington Vermont to survey all monitoring well locations at the site to a US Coast amp Geodetic Survey datum Elevations at the ground surface the top of the outer well casing and the top inner stainless steel pipe casing were measured

Prior to any ground water sampling an ERM hydrogeologist measured static water levels to the nearest one-hundredth of a foot The water in ERM-5D was frozen but a measurement was taken to the top of the ice Total depth was measured in all wells but ERM-5D and -3S A plug of ice prohibited measurement of total depth in ERM-3S

An ERM hydrogeologist evacuated at least three well volumes of water from the wells using dedicated bottom filling PVC bailers VTDEC personnel then collected samples for analysis of volatile organics by EPA Method 601602 In addition the Vermont DEC collected samples for analysis of priority pollutant metals

Surface water samples were collected by submersing vials and jars in the streams as designated on Figure 2 Analysis of surface water samples was identical to that of ground water samples

ERM collected samples which were delivered to Eastern Analytical Laboratories Inc (EAL) of North Billerica Massachusetts Because of maintenance being performed on EALs GCMS the samples were delivered to Toxicon Laboratories of Woburn Massachusetts The resulting data were determined by ERM to be invalid due to poor intralab chain-of-custody protocols at Toxicon and inconsistencies in laboratory procedures by Toxicon personnel

30 RESULTS AND DISCUSSION

3 1 Physiography and Regional Geology

The Tansitor site is in the southwestern corner of Vermont (Figure 1) in the Taconic Range This area is in the Hudson River basin The site is at the southern base of Whipstock Hill approximately 35 miles west of the center of Bennington Vermont An unnamed hill lies directly south across the valley

The geology of the vicinity is characterized by an overburden of glacial materials underlain by Walloomsic Slate No bedrock outcrops were observed on site The valley in which Tansitor is located was part of a glacial lake when recessional moraines blocked the valley drainage to the west A glacioshylacustrine clay deposit formed in the lake bottom and was later covered with till The extent of this clay is not well-documented in the literature

It is unclear whether this clay layer is continuous across the valley and whether it would act as an effective barrier to downward migration of contaminants into the bedrock ag_uifer The EPAs Site Inspection report states that the depth to bedrock (slate) at the Severs1 property 600 feet west of the site is 80 feet which if correct would indicate the absence of an effective clay layer at that location However if the wetlands or stream south of Route 9 represent a ground water discharge zone the presence of a limited on-site clay layer could prevent migration of contaminants into the bedrock These issues will be resolved in future investigations

The topographic slope is to the southeast An unnamed perennial stream is located across Route 9 from the site and flows towards the southwest for about 05 miles before entering Browns Brook which flows west about four miles before entering the Hoosic River An intermittent stream begins near the northeastern corner of the main building and joins the perennial stream in the wetland south of the site

3 2 Site Geology

The overburden at the Tansitor site consists of glacial tills and glacio-lacustrine clays Figure 3a shows the location of an on-site cross-section Figure 3b is a generalized cross-section for the site The till matrix is primarily mixed clays and silts with up to 40 percent sand and gravel In general till compaction increases with depth and with an increase in clay content The exact thickness of the overburden is unknown Sorption of contaminants onto the overburden sediments is likely enhanced by the high clay content of the till which could retard the movement of the contaminants

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A compact orange silty clay of glacio-lacustrine origin was found in both ERM-2S and ERM-5D at respective depths of 44 and 50 feet below grade (798 and 770 feet above Mean Sea Level) The thickness of this layer is a minimum of seven feet at ERM-5D and a minimum of 18 feet at ERM-2S (both borings were halted before the clays were completely penetrated) The other shallow wells were not advanced deep enough to intercept the clay layer

Within the till layer in ERM-2S and -5D a significant increase in the number of blow counts occurred at 10 and 15 feet respectively This reflects an increase in sediment compaction at these depths Since the sediment texture is the same above and below these intervals it is likely that the upper layer represents disturbed sediments possibly a collapse or slump structure

A lens of gray clay was found between 10 and 12 feet below ground level in ERM-4S The degree to which this may act as an impermeable barrier depends in part on the lateral extent of the clay lens

Both ERM-4S and -5D have seams of fine sand bedded with the silty clays At ERM-2S a three foot diameter boulder was intersected

Bedrock was not encountered in any of the borings Contrary to prior reports bedrock does not appear to outcrop in the immediate vicinity of the disposal pit The only bedrock outcrops observed were on the northern side of Whipstock Hill far upgradient of the site

3 3 Soil Quality

Previous soil sampling by Tansitor in the disposal pit area is described in Appendix A No additional sampling in this area was performed by ERM Results of ERMs field screening of split spoon soil samples are shown in Table 1 As indicated only one sample at the zero to 20 foot depth from the ERM-1S boring had a detection using an HNU meter The reading of 20 ppm could be due to the moisture content of the soil or the presence of VOCs Only laboratory or other more accurate analysis could confirm the presence of VOCs Future soil sampling in the disposal pit area should address this issue

In boring ERM-2S all samples between 50 and 44 feet below grade had detections of volatile organics The highest concentrations in this boring were detected between 50 and 12 feet below ground level (up to 700 ppm) At 44 feet below grade a tight clay was encountered and no volatiles were detected below this point The spoon collected above the clay layer at 40 to 42 feet below grade had a concentration of 50 ppm which is

14

Table 1

Results of Field Screening of Split Spoon Sediments

(ppm)

24 HOUR 24 HOUR

WELL NO DEPTH ON SITE HEADSPACE WELL NO DEPTH ON SITE HEADSPACE

1S 0-2 2 4S 0-2 ND ND

5-7 ND ND 5-7 lt1 ND

10-12 ND ND 10-12 ND ND

15-17 ND ND 15-17 ND ND

18-20 ND ND

2S 0-2 ND

5-7 -shy gt100 5D 0-2 ND

10-12 -shy 700 5-7 -- 3

15-17 -shy 85 10-12 -- 1

20-22 -shy 4 15-17 NO ND

25-27 -shy 6 20-22 ND ND

30-32 -shy 10 25-27 NO ND

325-34 -shy 65 30-32 80 ND

39-40 -shy 30 35-37 ND NO

40-42 -shy 5 40-42 ND ND

45-47 NO ND 45-47 ND NO

50-52 ND ND 50-52 ND NO

55-57 ND ND 55-57 NO ND

60-62 ND

-shy INDICATES THAT NO READING WAS TAKEN

3S 0-2 ND ND

5-7 ND ND ONLY PEAK CONCENTRATIONS ARE LISTED

10-12 ND ND

I | 15-17 I lt1 ND

I | 18-20 I lt1 2

The

significantly below the peak concentrations in the boring This concentration which is far below the solubility limit of the VOCs detected at the site would indicate that a Dense Non-Aqueous Phase Liquid (DNAPL) is not present above the clay layer at this location Based on these readings the well screen for EPxM-2S was set between 70 and 17 feet below grade

ERM-3S had minor detections between 15 and 20 feet below grade of 20 ppm or less ERM-4S had a trace detection at the 50 to 70 foot interval of less than 10 ppm Similarly concentrations of 30 ppm or less were detected between 50 and 12 feet below grade in ERM-5D

The Vermont unofficial unpublished guidelines for soil removal are based on RCPJV landban requirements The general guidance is to multiply the landban concentration by a factor of 20 In the absence of a landban value the MCL multiplied by a factor of 20 should be used For constituents at the site the following guidelines may be applicable

Consituent Remediation Guideline

111-trichloroethane 8200 ppb (landban-based)

trichloroethene 100 ppb (MCL-based)

chloroform 2000 ppb (MCL-based)

11-dichloroethene 140 ppb (MCL-based)

tetrachloroethene 100 ppb ( p r o p o s e d based)

MCL-

11-dichloroethane 1400 ppb (based on VT water quality guideline)

Since these guidelines are chemical-specific laboratory analyses of soil samples are necessary to determine soil remediation levels for the Tansitor site ERM did not submit any soil samples for laboratory analysis during this investigation although prior investigations included soil sampling and analysis in the disposal pit area (Appendix A)

Since a soil excavation or in-situ remediation would not normally extend below the water table the soil removal guidelines do not necessarily apply to samples collected below the water table Saturated contaminated sediments are generally addressed through a ground water remedial action

16 TtK

34 Hydroqeology and Water Quality

In order to assess potential impacts of the Tansitor disposal pit site EKM investigated ground and surface water conditions on and directly downgradient of the site As ground and surface water are interactive an analysis of both systems is necessary to assess potential migration of chemicals

For comparative purposes the Maximum Contaminant Levels (MCLs) used for defining drinking water quality are listed below for those chemicals present at the site

Parameter MCL (ppb)

11-dichloroethane 70 (VT guideline not an MCL) 11-dichloroethene 7 111-trichloroethane 200 trichloroethene 5 tetrachloroethene 5 (proposed MCL) chloroform 100 (total trihalomethanes)

341 Historical Water Quality

An extensive sampling history exists at the site since 1983 Although limited ground water sampling occurred primarily in nearby water supply wells a large volume of surface water quality data exists Unfortunately the surface water sampling locations were never standardized by staking locations in the field Therefore it is difficult to generate trends over time at specific locations The surface water sampling points should be considered approximate locations Appendix B contains a summary of all water samples collected at and near the Tansitor site

In terms of ground water quality results there has never been a detection of volatile organics in any of the residential water supply wells adjacent to the Tansitor site Only one sampling event (January 20 1984) indicated the possible presence of volatiles in the Tansitor tap water Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only detected once it is likely that this detection was a false positive or indicative of laboratory contamination Follow-up sampling to this investigation will address residential well water quality

17 The

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342 Surface Water Quality

Surface water quality results from the January 3 1989 event are summarized in Table 2 and historical data appear in Appendix B Sampling locations are shown on Figure 2 As indicated

sample S-3 is located northeast of the firepond

- sample S-7 is located at an outfall of a pipeline originating at the firepond before entering the perennial stream

samples S-ll and S-13 represent upgradient and downgradient locations respectively on the perennial stream south of Route 9 and

- sample S-16 is located at an upgradient point on the intermittent stream north of the facility

Sample S-3 had no detections of VOCs This result is different from past sampling events (Appendix B) where S-3 was the most contaminated of any of the surface water locations After discussions with VTDEC personnel it appears that the location of S-3 has varied in the past Therefore no accurate trends can be determined at this time

VOC concentrations were non-detectable in S-ll S-7 had a total of 142 ppb and S-13 had a total of 24 ppb Based on the location of sampling points it appears that chemicals are entering the stream downgradient of S-ll either from tributary surface water sources or from ground water discharge The Maximum Contaminant Level (MCL) for 11-dichloroethane (11-DCA) has not been defined however the unofficial Vermont drinking water guideline of 70 ppb was not exceeded The MCLs for 11shydichloroethene (11-DCE) and 11 1-trichloroethane (TCA) the other two chemicals detected in S-7 and S-13 were also not exceeded The MCLs are presented here for comparative purposes alone since the stream is not a likely source of drinking water

Sample S-16 collected from the on-site intermittent stream had a concentration of 16615 ppb of total volatiles which exceeds drinking water standards for all constituents detected This concentration may be due to ground water discharge from the slope north of the firepond some of which drains west into the intermittent stream The presence of tetrachloroethene (PCE) at 20 ppb which was not detected anywhere else at the site warrants further investigation in this area

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OCU

O M-l

rH

W

SH

o W gt-J)

Q 2

bullH-H

bullH-P

O O - I 1 rH O

C X ^H o o x

UbullHj_iEH

0) Oj_i O

V

o o gt

O

O -H

W O -P -H

CO

M EH lt M

D O az

C

O3bullH

-H -rH

Q Q 1 1 rH rH

U

(t3 5H -P

1 rH

ltH r - U

rH -H

i_j ltC EH

M -H CU W rH gt

Si rH

c fO EH

O gt

o u

CD

shy -H

shy CU rH EH

- 5H rH EH

O EH

g (0 roc cn lt

343 Ground Water Flow and Direction

Figure 4 shows a water table map across the site Table 3 summarizes the water level data Ground water flow is locally towards the southeast at the site at a gradient of approximately 0065 ftft

Flow Rates

Using the natural range of values below and the modified Darcy equation the average linear velocity for the ground water in the overburden above the clay at the site is probably between 67 ftyr and 0027 ftyr

hydraulic conductivity 10~4 to 10~7 cmsec of till (K) (after Freeze amp Cherry

1979)

hydraulic gradient (i) 0065 ftft (calculated between

ERM-1S and -5S)

effective porosity (n) 10 to 25

v = (Ki)n

Although permeability (K) data were not obtained during this initial investigation a likely value of permeability is 10~4

cmsec with an effective porosity of 20 which would result in an average linear velocity of 34 ftyr for the upper till zone Field permeability testing is warranted to refine this estimate The more compact lower till likely has a lower permeability which would result in a lower average linear velocity which could restrict contaminant transport

In terms of a sensitivity analysis for the above equation velocity and effective porosity are inversely proportional Therefore a larger effective porosity would result in a slower average linear velocity A higher permeability would result in a higher velocity Applying these velocity estimates to contaminant transport must take into account dispersion and retardation effects

Vertical Gradients

At the time that ERM measured the water levels in the monitoring wells water in ERM-5D was frozen in the casing above ground level This is due to a high water level The depth to ice can not be directly correlated to depth to water in this well because of expansion effects however the difference is not

20

tennis courts

S-l 1 1 ntsrml ttsrjlt stream

perannial stream

_EGEND

Surfccs Water Samp1e

fanitor(ng Wei 1

Water Table Elevatlor ~t above MSL)

Water Taole Contours

D1rect1 on of G^ourcwator F 1 ov

SCALE (feet)

bull00 280 300 400

N

ERM i gare 4 New Engona ~c

Tensi tor E i e c ^ r c n i c s Inc

Genera i zed

vater Tao le E eva t ion Map

for Jani^arj 3 1989

WELL

ERM IS

ERM 2S

ERM 3S

ERM 4S

ERM 5S

ERM 5D

Table 3

WATER GAUGING AND SURVEY DATA

MP ELEVATION

ft above MSL

86029

84387

82262

81995

82238

82237

DEPTH TO

WATER

ft below MP

9 10

3 46

160

348

9 00

100

TOTAL DEPTH

ft below MP

1345

1980

1620

17 75

WATER TABLE ELEVATION

ft above MSL

851 19

84041

82102

81647

813 38

82137

All measurements made on January 3 1989 by ERM

Frozen plug prevented measurement Depth to ice

The

Group

likely to exceed a couple of inches The difference in the depth to ice in ERM-5D and the depth to water in ERM-5S is about eight feet This represents a strong upward vertical gradient especially since ERM-5S is screened between 6 and 16 feet below grade and EKM-5D is screened between 27 and 32 feet below grade

Although ERM-5S and -5D are screened in similar strata based on sediment texture the blow counts increased considerably beyond 15 feet below grade indicating a tighter zone as described earlier The increased compaction with depth and the upward vertical gradient would tend to hinder the downward migration of dissolved contaminants in this area Dissolved contaminant flow is probably concentrated in the upper till layer due to these combined factors

Because of the difference in density between water and organic solvents a vertical gradient alone would not prohibit the downward migration of a DNAPL As discussed earlier however there is currently no evidence to indicate the presence of a DNAPL

344 Ground Water Quality

Organics

Table 4 is a summary of volatile organic concentrations in ground water (as determined by the VTDEC laboratory) from the on-site monitoring wells installed by ERM Figure 5 shows the generalized TCA plume at the site Five solvent-related compounds from the EPA Method 624 suite of parameters were identified in the overburden at the site Well ERM-5D was frozen above ground at the time of sampling and therefore no data is available

Of the six compounds detected at the site several are likely breakdown products of the more prevalent contaminants TCA is known to break down abiotically to 11-DCE and through biodegradation to 11-DCA The kinetics of the reactions favor the formation of 11-DCA It is likely that the remaining constituents trichloroethene (TCE) tetrachloroethene (PCE) and chloroform are virgin chemicals

The upgradient and downgradient wells EPJM-1S and -5S both had non-detectable readings of volatile organic chemicals This would indicate that no additional sources of ground water contamination exist upgradient of the disposal pit Although the non-detectable reading in ERM-5S indicates that considerable attenuation of contaminants has occurred between the disposal pit and beyond the fire pond it does not necessarily demonstrate that ERM-5S is the furthest downgradient advance of contaminants in ground water It is possible that the leading edge of contamshy

23 Thlaquo

Group

- -

Oi CO

00 IT) 0)

1 Q Q Q Q Q Q 2 2 222 2

sect w

rH

CO

CO en 3 vO CN co i P Q Q CN Q CN c sect 2 2 2 o w

e gti O SH O

CO o CO ^3 O gtpoundgt (N in 4J T3

CO ^ Crt rH in rd CO n OJ ^f ltN en M |

1 p bullgt - O O sect CO CO X) CO

W rH 0)

O wu

gti 4-) EH Q rH

C H o O O O o EH C O 2 CO ^f 31 O CN o gt o g O 01 [ rT rH rH T-J

1 P Q shy -0) ^ s 2 r- rH U3 in

K O o W rH

EH -H CD shyc lt X M CO o gtiT3

rH C

Q Q) rfl 3 2 amp CO P

i Q Q Q Q Q Q Ecc

O 01 0) rH OS 4-1 2 2 2 2 2 2 T3 O

sect0) C UO UX) CQ

0)

w (0

CO CO

4-1 2 o C O

-X O 4-gt

0) O C ampH O

2 en 03 W rH 0) 3 u rd C C 2 (d

o O I] (U a) x -H O c C 4-1 C rd rd CO 0) o U 0) X x o cu 0) SH a 4-J 4-1 lH C 4-gt ^ 4-) 0) Q) O Q) U O O TJ O o rH x 0) 4-1

QJ ^ gtH X 4-1 CO bullH g O o o cu

W O 4-1 gtH rH rH -H O O O -H Q -H ox XI rH r-l O o 2 4-gt HH O U EH O gt Ul

O P C O -H bullH 1 rH V) bull- 4-1 0 Q) U Q Q H x j OJ CO -H EH a 73 O 1 1 ~ O lt rH gt1

Z -H rH (H cH rH -H EH CL rH 3 o c x - -bull - SH O g rt3

o o P O ltH rH (H EH EH tlaquo C gt CO lt

Ths

wate 1 i no

1 ntsrm 1 tts stream

perennial strsam

Surface Wcw2r~ Sample

N 100

Mom tor irg We I

TCA (ODD) D or nondetsctacia

t Cancentnac

ERM F -e o Sea 1e ( Fee t )

New Erg lard 1nc

00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

10 INTRODUCTION

11 Background

Tansitor Electronics Inc notified the United States Environmental Protection Agency (EPA) in May 1981 of potential contamination at the site to comply with CERCLA Section 103(c) This action began the National Contingency Plan (NCP) process of evaluating whether the site warranted action under the Comprehensive Environmental Response Compensation and Liability Act (CERCLA) The focus of the potential CERCLA response action is a 500 square foot disposal pit behind the Tansitor facility which received solvents and dilute acid solutions between sometime after 1956 and late 1978 or early 1979 A Preliminary Assessment (PA) was completed by the Vermont Agency of Environmental Conservation (now the VTDEC) in May 1984 The EPA completed a Site Inspection (SI) in January 1987 The Tansitor site was identified in the Federal Register as a proposed National Priorities List (NPL) site in June 1988

The EPA- and DEC- estimated volume of wastes released at the disposal pit has varied between 850 gallons (used in the HRS calculations) and 500 cubic yards (101000 gallons) Although no formal records exist Tansitor believes that the latter estimates contained in the PA and SI reports are misleading and inflated based on the following information

between 50 and 150 gallons per year of primarily dilute aqueous acidic solutions were released in the disposal pit over an approximately 17 year period and

111-trichloroethane (TCA) the predominant solvent detected at the site was not used until the mid-1970s and therefore was only released over an approximately five year period

Based on this information it is improbable that 500 cubic yards of waste were released at the disposal pit It is likely that the actual volume of solvents disposed of is closer to 500 gallons (based on 100 galsyear over five years)

Tansitor contacted ERM-New England Inc (ERM) in August 1988 to evaluate the EPAs Hazard Ranking Score (HRS) ERM identified several inaccurracies during this review which were brought to the attention of the EPA in a letter dated August 10 1989 and addressed to Stephen Lingle of the EPA from Tansitor ERM then prepared a workplan for a preliminary evaluation of the disposal pit area Tansitor approved this workplan in November 1988 This report presents results of the investigation outlined in this workplan

^

ffl

j|

Key components of ERMs investigation included

compilation of a detailed site history based on correspondence between Tansitor VTDEC and EPA personnel This compilation is attached as Appendix A

compilation of a related summary of historical water quality data for the site for the period between 1983 and 1988 which is included as Appendix B to this report and

- installation and sampling of monitoring wells and preparation of well logs in Appendix C

12 Purpose and Scope

The purpose of the investigation was to

1 determine the type and amounts of chemicals disposed in the disposal pit on the northern side of the site

2 obtain information to aid in evaluating the vertical and lateral extent of Volatile Organic Compounds (VOCs)

in ground and surface water and

3 evaluate on a preliminary basis the potential environmental risks associated with the disposal pit

The scope of work is intended to provide a preliminary characterization of site contamination downgradient of the

disposal pit and is not intended to fully characterize the site No other areas on site were evaluated Additional studies may be

necessary to completely evaluate soil and ground water quality at the site

ERMs November 1988 workplan identified a fourth purpose which was to characterize VOCs in the pit area The proposed location of ERM-2S in the pit area which would have addressed this purpose was altered after discussions with Tansitor personnel Since a soil remediation activity in the pit area is a probable outcome the location of ERM-2S was moved to a position downgradient of the pit so as not to be destroyed if soil is removed as part of a remedial activity

ERM contracted Alceon Corporation to evaluate the current data base relative to public health and environmental risk Due to the limited data available the preliminary evaluation of risk

was inconclusive Additional sampling events will address data gaps identified during this evaluation 1

A brief summary of the work scope follows ERM performed the following seven tasks to accomplish the goals of this investigation

Task 1 Task 2 Task 3 Task 4 Task 5 Task 6 Task 7

Review Existing Records Prepare a Health and Safety Plan Install Monitoring Wells Collect Samples and Survey Compile and Analyze Data Prepare Report Project Management

Results of this investigation do not include design of any remedial measures engineering cost estimates or comprehensive evaluation of potential risks

13 Site Description

Tansitor Electronics Inc is a manufacturer of electronic capacitors The Tansitor property is approximately 36 acres in size located in the Town of Bennington Vermont The site is in

91 the southwestern part of the state approximately 10 miles north of the Massachusetts border and approximately 06 miles east of the New York border (Figure 1)

The Tansitor property consists of the main manufacturing facility offices etch house parking areas open land and fire pond (Figure 2) The disposal pit lies approximately 400 feet upslope of the manufacturing building at an elevation of approximately 850 feet above Mean Sea Level (MSL) The firepond is 100 feet east of the manufacturing building and approximately 300 feet south of the disposal pit The firepond lies at the base of the slope below the disposal pit at an elevation of approximately 815 feet above MSL This pond serves as the primary source of water for the Bennington Fire Department during fires located west of Bennington

The surrounding area east and west of the site is primarily ruralresidential All of the nearby residents use ground water from the bedrock aquifer as their sole water source Whipstock Hill rises north of (behind) the facility A wetland exists on Tansitor property south of Route 9 in a stream valley which drains to the west An unnamed hill rises over 1900 feet above MSL south of the wetlands

The facility is over thirty years old and currently employs 184 people in the manufacture of tantalum electrolytic capacitors and chip type solid tantalum capacitors Production operations include

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- pressing of tantalum powder into pellets (anodes or cathodes)

- sintering in vacuum furnaces and anodizing the pellets using highly diluted solutions of nitric sulfuric and phosphoric acids and glycol

assembling the anodes and cathodes in tantalum silver or aluminum cases and

Completion of these assemblies using various welding technigues and custom built machinery

The electronic capacitors manufactured by Tansitor consist mainly of silver tantalum and palladium metals The process wastes generated from the manufacturing of these capacitors include metal plating solutions cleaning solvents degreasers and dilute acidcaustic solutions

The EPA has estimated that between 50 and 150 gallons per year of these wastes were disposed in an unlined disposal pit north of the facility between sometime after 1956 and late 1978 or early 1979 However chlorinated organic solvents primarily 111-trichloroethane were not used or disposed at the site until the mid-1970s

Ground water seeps discharge from the base of the slope south (downgradient) of the disposal pit Historical sampling in this area has shown elevated readings of VOCs The firepond at the base of the slope receives ground water discharge and has likewise been determined to contain elevated levels of VOCs The primary VOCs detected at the site to date have been 111-shytrichloroethane (TCA) and related chlorinated solvents

A detailed site history based on ERMs interviews and records review is presented in Appendix A

20 Methodology

The methodology used was in conformance to ASTM and EPA guidance documents ERM installed six monitoring wells and collected ground and surface water and soil samples during the winter of 198889 Field screening for VOCs was conducted on the split spoon soil samples from the soil borings No soil samples were delivered to a laboratory for analysis

ERM delivered water samples collected on January 3 1989 to Eastern Analytical Laboratories Inc of North Billerica Massachusetts for analysis (the resulting data were later shown to be invalid and thus were not used) VTDEC personnel delivered split water samples to the VTDEC laboratory for analysis The split VTDEC data are discussed exclusively in this report

Water samples were taken from two sources

ground water samples from the five shallow monitoring wells and

surface water samples from five historical sampling points

21 Monitoring Well Installations

211 Locations

Six wells were installed in five locations on the Tansitor Property (Figure 2) Well numbers followed by an S indicate a shallow overburden well with total depth less than 20 feet and well numbers followed by a D indicate deep overburden wells completed above the glacio-lacustrine clay layer

Well Location Purpose

ERM-1S About 75 north of Intended to be for background the disposal pit concentrations

ERM-2S About 150 south- Assess localized contaminant southwest of the transport and vertical disposal site distribution in the soil

ERM-3S Downgradient of pit Evaluate potential flow around at northeast corner the eastern side of the fire of the fire pond pond

The

ERM-4S About 400 south ofERM-2S at the northwest

Evaluate potential flow around the western side of the fire

corner of the fire pond pond

EKM-5S Southeast side offire pond

To assess shallow transport beyond the fire pond and

vertical flow

ERM-5D Southeast side of To assess deep transport fire pond underneath the fire pond

and vertical flow

212 Drilling Methodology

ERM subcontracted with CATOH Environmental Companies Inc of Albany NY for drilling services Several different drilling methods were used depending upon the soil type and total well depth Precautions were taken to assure that no cross contamination between aquifers occurred during drilling A Mobile B-61 Drill Rig capable of both rotary and hollow stem auger drilling was used Appendix C includes detailed drilling logs graphic logs and well construction diagrams

Well ERM-1S was drilled to a depth of 17 feet and wells ERM-3S 4S and 5S were drilled to 18 feet deep using 425 inch ID hollow stem augers

Well ERM-2S was begun using 625 inch inner diameter (ID) hollow stem augers (HSA) An increase in soil compaction required a change to rotary drilling at a depth of 34 feet Air rotary with a nominal six inch diameter tricone bit was used from 34 to 39 feet below ground surface Sand began to clog the bit at a depth of 39 feet Nominal four inch diameter steel casing was driven to 39 feet and the drilling method was changed to wash rotary with a nominal four inch diameter tricone bit The casing kept the sand from caving into the boring and sealed off the potentially contaminated soils above 39 feet from the deeper soils Wash rotary drilling was continued until the final boring depth 60 feet was achieved This boring was filled up to 19 feet below grade with bentonite to complete the well in the most contaminated zone based on the field screening of split spoon sediments

Monitoring well ERM-5D was drilled with 625 inch ID HSA to a depth of 20 feet An increase in soil density required a change in drilling method to wash rotary using a nominal four inch diameter tricone bit At a depth of 37 feet sand began to fill the boring and nominal four inch diameter steel casing was driven to a depth of 35 feet As with well ERM-2S the casing isolated the surface sediments The final depth of this boring was 57 feet however the boring was backfilled with bentonite up to 34 feet below grade above which the well was completed

213 Soil Sampling and Analysis

ERM performed standard split spoon sampling in accordance with ASTM standards (at intervals of five feet) in all soil borings during drilling An ERM hydrogeologist logged all samples describing all lithologic variations Samples were then stored in glass jars covered with aluminum foil capped and labelled Name of sample date time depth and blowcounts are labelled on each jar

ERM screened soil samples via headspace analysis using a portable field detector for organic vapors Either a photoionization detector (HNU PI-101) or a flame ionization detector (Foxboro Instruments OVA Model 128) was used In most cases organic vapors were measured both when the split spoon was opened and 24 hours later The 24 hour measurement is taken from the headspace by puncturing the aluminum foil in the sample jar after the sample is allowed to equilibrate at room temperature No soil samples were delivered to a laboratory for analysis

214 Well Construction

Following completion of the borings to total depth a one to two foot thick sandpack was added as a foundation for the well casing and to prevent the clogging of the screen with fine material from the formation In ERM-2S and -5D bentonite was used to fill in the borings from 60 to 19 feet below grade and 57 to 34 feet below grade respectively prior to the addition of the sandpack This was done so that the well screens could be set in the zone of highest contamination based on field screening

Two-inch diameter 0020 inch slot 304 stainless steel screen and riser were used for well construction Five feet of slotted screen was used in ERM-5D Ten feet of slotted screen was used in each of the shallow overburden wells Stainless steel centralizers were used in all wells to ensure that the screen was vertical and that the well was located in the center of the boring

The sandpack was deposited around the screened interval and extended approximately two feet above the top of the screen A bentonite pellet layer was then deposited above the sandpack to form a two-to-five foot seal A bentonite-cement grout was used to seal the remainder of the boring The top three to five feet of the boring consisted of Portland cement to provide a strong foundation for a protective steel casing The stainless steel risers protrude approximately two feet above the ground surface The protective casings are secured with locking caps

CATOH Environmental developed the wells following completion by pumping water from the well until the water became clear

22 Surveying Gauging and Collecting Water Samples

ERM subcontracted Gerald E Morrissey Inc of Bennington Vermont to survey all monitoring well locations at the site to a US Coast amp Geodetic Survey datum Elevations at the ground surface the top of the outer well casing and the top inner stainless steel pipe casing were measured

Prior to any ground water sampling an ERM hydrogeologist measured static water levels to the nearest one-hundredth of a foot The water in ERM-5D was frozen but a measurement was taken to the top of the ice Total depth was measured in all wells but ERM-5D and -3S A plug of ice prohibited measurement of total depth in ERM-3S

An ERM hydrogeologist evacuated at least three well volumes of water from the wells using dedicated bottom filling PVC bailers VTDEC personnel then collected samples for analysis of volatile organics by EPA Method 601602 In addition the Vermont DEC collected samples for analysis of priority pollutant metals

Surface water samples were collected by submersing vials and jars in the streams as designated on Figure 2 Analysis of surface water samples was identical to that of ground water samples

ERM collected samples which were delivered to Eastern Analytical Laboratories Inc (EAL) of North Billerica Massachusetts Because of maintenance being performed on EALs GCMS the samples were delivered to Toxicon Laboratories of Woburn Massachusetts The resulting data were determined by ERM to be invalid due to poor intralab chain-of-custody protocols at Toxicon and inconsistencies in laboratory procedures by Toxicon personnel

30 RESULTS AND DISCUSSION

3 1 Physiography and Regional Geology

The Tansitor site is in the southwestern corner of Vermont (Figure 1) in the Taconic Range This area is in the Hudson River basin The site is at the southern base of Whipstock Hill approximately 35 miles west of the center of Bennington Vermont An unnamed hill lies directly south across the valley

The geology of the vicinity is characterized by an overburden of glacial materials underlain by Walloomsic Slate No bedrock outcrops were observed on site The valley in which Tansitor is located was part of a glacial lake when recessional moraines blocked the valley drainage to the west A glacioshylacustrine clay deposit formed in the lake bottom and was later covered with till The extent of this clay is not well-documented in the literature

It is unclear whether this clay layer is continuous across the valley and whether it would act as an effective barrier to downward migration of contaminants into the bedrock ag_uifer The EPAs Site Inspection report states that the depth to bedrock (slate) at the Severs1 property 600 feet west of the site is 80 feet which if correct would indicate the absence of an effective clay layer at that location However if the wetlands or stream south of Route 9 represent a ground water discharge zone the presence of a limited on-site clay layer could prevent migration of contaminants into the bedrock These issues will be resolved in future investigations

The topographic slope is to the southeast An unnamed perennial stream is located across Route 9 from the site and flows towards the southwest for about 05 miles before entering Browns Brook which flows west about four miles before entering the Hoosic River An intermittent stream begins near the northeastern corner of the main building and joins the perennial stream in the wetland south of the site

3 2 Site Geology

The overburden at the Tansitor site consists of glacial tills and glacio-lacustrine clays Figure 3a shows the location of an on-site cross-section Figure 3b is a generalized cross-section for the site The till matrix is primarily mixed clays and silts with up to 40 percent sand and gravel In general till compaction increases with depth and with an increase in clay content The exact thickness of the overburden is unknown Sorption of contaminants onto the overburden sediments is likely enhanced by the high clay content of the till which could retard the movement of the contaminants

11 The

o o o o o o CO CO rr CJ o CO CO CO CO 00 CO

uea|j

A compact orange silty clay of glacio-lacustrine origin was found in both ERM-2S and ERM-5D at respective depths of 44 and 50 feet below grade (798 and 770 feet above Mean Sea Level) The thickness of this layer is a minimum of seven feet at ERM-5D and a minimum of 18 feet at ERM-2S (both borings were halted before the clays were completely penetrated) The other shallow wells were not advanced deep enough to intercept the clay layer

Within the till layer in ERM-2S and -5D a significant increase in the number of blow counts occurred at 10 and 15 feet respectively This reflects an increase in sediment compaction at these depths Since the sediment texture is the same above and below these intervals it is likely that the upper layer represents disturbed sediments possibly a collapse or slump structure

A lens of gray clay was found between 10 and 12 feet below ground level in ERM-4S The degree to which this may act as an impermeable barrier depends in part on the lateral extent of the clay lens

Both ERM-4S and -5D have seams of fine sand bedded with the silty clays At ERM-2S a three foot diameter boulder was intersected

Bedrock was not encountered in any of the borings Contrary to prior reports bedrock does not appear to outcrop in the immediate vicinity of the disposal pit The only bedrock outcrops observed were on the northern side of Whipstock Hill far upgradient of the site

3 3 Soil Quality

Previous soil sampling by Tansitor in the disposal pit area is described in Appendix A No additional sampling in this area was performed by ERM Results of ERMs field screening of split spoon soil samples are shown in Table 1 As indicated only one sample at the zero to 20 foot depth from the ERM-1S boring had a detection using an HNU meter The reading of 20 ppm could be due to the moisture content of the soil or the presence of VOCs Only laboratory or other more accurate analysis could confirm the presence of VOCs Future soil sampling in the disposal pit area should address this issue

In boring ERM-2S all samples between 50 and 44 feet below grade had detections of volatile organics The highest concentrations in this boring were detected between 50 and 12 feet below ground level (up to 700 ppm) At 44 feet below grade a tight clay was encountered and no volatiles were detected below this point The spoon collected above the clay layer at 40 to 42 feet below grade had a concentration of 50 ppm which is

14

Table 1

Results of Field Screening of Split Spoon Sediments

(ppm)

24 HOUR 24 HOUR

WELL NO DEPTH ON SITE HEADSPACE WELL NO DEPTH ON SITE HEADSPACE

1S 0-2 2 4S 0-2 ND ND

5-7 ND ND 5-7 lt1 ND

10-12 ND ND 10-12 ND ND

15-17 ND ND 15-17 ND ND

18-20 ND ND

2S 0-2 ND

5-7 -shy gt100 5D 0-2 ND

10-12 -shy 700 5-7 -- 3

15-17 -shy 85 10-12 -- 1

20-22 -shy 4 15-17 NO ND

25-27 -shy 6 20-22 ND ND

30-32 -shy 10 25-27 NO ND

325-34 -shy 65 30-32 80 ND

39-40 -shy 30 35-37 ND NO

40-42 -shy 5 40-42 ND ND

45-47 NO ND 45-47 ND NO

50-52 ND ND 50-52 ND NO

55-57 ND ND 55-57 NO ND

60-62 ND

-shy INDICATES THAT NO READING WAS TAKEN

3S 0-2 ND ND

5-7 ND ND ONLY PEAK CONCENTRATIONS ARE LISTED

10-12 ND ND

I | 15-17 I lt1 ND

I | 18-20 I lt1 2

The

significantly below the peak concentrations in the boring This concentration which is far below the solubility limit of the VOCs detected at the site would indicate that a Dense Non-Aqueous Phase Liquid (DNAPL) is not present above the clay layer at this location Based on these readings the well screen for EPxM-2S was set between 70 and 17 feet below grade

ERM-3S had minor detections between 15 and 20 feet below grade of 20 ppm or less ERM-4S had a trace detection at the 50 to 70 foot interval of less than 10 ppm Similarly concentrations of 30 ppm or less were detected between 50 and 12 feet below grade in ERM-5D

The Vermont unofficial unpublished guidelines for soil removal are based on RCPJV landban requirements The general guidance is to multiply the landban concentration by a factor of 20 In the absence of a landban value the MCL multiplied by a factor of 20 should be used For constituents at the site the following guidelines may be applicable

Consituent Remediation Guideline

111-trichloroethane 8200 ppb (landban-based)

trichloroethene 100 ppb (MCL-based)

chloroform 2000 ppb (MCL-based)

11-dichloroethene 140 ppb (MCL-based)

tetrachloroethene 100 ppb ( p r o p o s e d based)

MCL-

11-dichloroethane 1400 ppb (based on VT water quality guideline)

Since these guidelines are chemical-specific laboratory analyses of soil samples are necessary to determine soil remediation levels for the Tansitor site ERM did not submit any soil samples for laboratory analysis during this investigation although prior investigations included soil sampling and analysis in the disposal pit area (Appendix A)

Since a soil excavation or in-situ remediation would not normally extend below the water table the soil removal guidelines do not necessarily apply to samples collected below the water table Saturated contaminated sediments are generally addressed through a ground water remedial action

16 TtK

34 Hydroqeology and Water Quality

In order to assess potential impacts of the Tansitor disposal pit site EKM investigated ground and surface water conditions on and directly downgradient of the site As ground and surface water are interactive an analysis of both systems is necessary to assess potential migration of chemicals

For comparative purposes the Maximum Contaminant Levels (MCLs) used for defining drinking water quality are listed below for those chemicals present at the site

Parameter MCL (ppb)

11-dichloroethane 70 (VT guideline not an MCL) 11-dichloroethene 7 111-trichloroethane 200 trichloroethene 5 tetrachloroethene 5 (proposed MCL) chloroform 100 (total trihalomethanes)

341 Historical Water Quality

An extensive sampling history exists at the site since 1983 Although limited ground water sampling occurred primarily in nearby water supply wells a large volume of surface water quality data exists Unfortunately the surface water sampling locations were never standardized by staking locations in the field Therefore it is difficult to generate trends over time at specific locations The surface water sampling points should be considered approximate locations Appendix B contains a summary of all water samples collected at and near the Tansitor site

In terms of ground water quality results there has never been a detection of volatile organics in any of the residential water supply wells adjacent to the Tansitor site Only one sampling event (January 20 1984) indicated the possible presence of volatiles in the Tansitor tap water Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only detected once it is likely that this detection was a false positive or indicative of laboratory contamination Follow-up sampling to this investigation will address residential well water quality

17 The

Group

342 Surface Water Quality

Surface water quality results from the January 3 1989 event are summarized in Table 2 and historical data appear in Appendix B Sampling locations are shown on Figure 2 As indicated

sample S-3 is located northeast of the firepond

- sample S-7 is located at an outfall of a pipeline originating at the firepond before entering the perennial stream

samples S-ll and S-13 represent upgradient and downgradient locations respectively on the perennial stream south of Route 9 and

- sample S-16 is located at an upgradient point on the intermittent stream north of the facility

Sample S-3 had no detections of VOCs This result is different from past sampling events (Appendix B) where S-3 was the most contaminated of any of the surface water locations After discussions with VTDEC personnel it appears that the location of S-3 has varied in the past Therefore no accurate trends can be determined at this time

VOC concentrations were non-detectable in S-ll S-7 had a total of 142 ppb and S-13 had a total of 24 ppb Based on the location of sampling points it appears that chemicals are entering the stream downgradient of S-ll either from tributary surface water sources or from ground water discharge The Maximum Contaminant Level (MCL) for 11-dichloroethane (11-DCA) has not been defined however the unofficial Vermont drinking water guideline of 70 ppb was not exceeded The MCLs for 11shydichloroethene (11-DCE) and 11 1-trichloroethane (TCA) the other two chemicals detected in S-7 and S-13 were also not exceeded The MCLs are presented here for comparative purposes alone since the stream is not a likely source of drinking water

Sample S-16 collected from the on-site intermittent stream had a concentration of 16615 ppb of total volatiles which exceeds drinking water standards for all constituents detected This concentration may be due to ground water discharge from the slope north of the firepond some of which drains west into the intermittent stream The presence of tetrachloroethene (PCE) at 20 ppb which was not detected anywhere else at the site warrants further investigation in this area

18 The

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343 Ground Water Flow and Direction

Figure 4 shows a water table map across the site Table 3 summarizes the water level data Ground water flow is locally towards the southeast at the site at a gradient of approximately 0065 ftft

Flow Rates

Using the natural range of values below and the modified Darcy equation the average linear velocity for the ground water in the overburden above the clay at the site is probably between 67 ftyr and 0027 ftyr

hydraulic conductivity 10~4 to 10~7 cmsec of till (K) (after Freeze amp Cherry

1979)

hydraulic gradient (i) 0065 ftft (calculated between

ERM-1S and -5S)

effective porosity (n) 10 to 25

v = (Ki)n

Although permeability (K) data were not obtained during this initial investigation a likely value of permeability is 10~4

cmsec with an effective porosity of 20 which would result in an average linear velocity of 34 ftyr for the upper till zone Field permeability testing is warranted to refine this estimate The more compact lower till likely has a lower permeability which would result in a lower average linear velocity which could restrict contaminant transport

In terms of a sensitivity analysis for the above equation velocity and effective porosity are inversely proportional Therefore a larger effective porosity would result in a slower average linear velocity A higher permeability would result in a higher velocity Applying these velocity estimates to contaminant transport must take into account dispersion and retardation effects

Vertical Gradients

At the time that ERM measured the water levels in the monitoring wells water in ERM-5D was frozen in the casing above ground level This is due to a high water level The depth to ice can not be directly correlated to depth to water in this well because of expansion effects however the difference is not

20

tennis courts

S-l 1 1 ntsrml ttsrjlt stream

perannial stream

_EGEND

Surfccs Water Samp1e

fanitor(ng Wei 1

Water Table Elevatlor ~t above MSL)

Water Taole Contours

D1rect1 on of G^ourcwator F 1 ov

SCALE (feet)

bull00 280 300 400

N

ERM i gare 4 New Engona ~c

Tensi tor E i e c ^ r c n i c s Inc

Genera i zed

vater Tao le E eva t ion Map

for Jani^arj 3 1989

WELL

ERM IS

ERM 2S

ERM 3S

ERM 4S

ERM 5S

ERM 5D

Table 3

WATER GAUGING AND SURVEY DATA

MP ELEVATION

ft above MSL

86029

84387

82262

81995

82238

82237

DEPTH TO

WATER

ft below MP

9 10

3 46

160

348

9 00

100

TOTAL DEPTH

ft below MP

1345

1980

1620

17 75

WATER TABLE ELEVATION

ft above MSL

851 19

84041

82102

81647

813 38

82137

All measurements made on January 3 1989 by ERM

Frozen plug prevented measurement Depth to ice

The

Group

likely to exceed a couple of inches The difference in the depth to ice in ERM-5D and the depth to water in ERM-5S is about eight feet This represents a strong upward vertical gradient especially since ERM-5S is screened between 6 and 16 feet below grade and EKM-5D is screened between 27 and 32 feet below grade

Although ERM-5S and -5D are screened in similar strata based on sediment texture the blow counts increased considerably beyond 15 feet below grade indicating a tighter zone as described earlier The increased compaction with depth and the upward vertical gradient would tend to hinder the downward migration of dissolved contaminants in this area Dissolved contaminant flow is probably concentrated in the upper till layer due to these combined factors

Because of the difference in density between water and organic solvents a vertical gradient alone would not prohibit the downward migration of a DNAPL As discussed earlier however there is currently no evidence to indicate the presence of a DNAPL

344 Ground Water Quality

Organics

Table 4 is a summary of volatile organic concentrations in ground water (as determined by the VTDEC laboratory) from the on-site monitoring wells installed by ERM Figure 5 shows the generalized TCA plume at the site Five solvent-related compounds from the EPA Method 624 suite of parameters were identified in the overburden at the site Well ERM-5D was frozen above ground at the time of sampling and therefore no data is available

Of the six compounds detected at the site several are likely breakdown products of the more prevalent contaminants TCA is known to break down abiotically to 11-DCE and through biodegradation to 11-DCA The kinetics of the reactions favor the formation of 11-DCA It is likely that the remaining constituents trichloroethene (TCE) tetrachloroethene (PCE) and chloroform are virgin chemicals

The upgradient and downgradient wells EPJM-1S and -5S both had non-detectable readings of volatile organic chemicals This would indicate that no additional sources of ground water contamination exist upgradient of the disposal pit Although the non-detectable reading in ERM-5S indicates that considerable attenuation of contaminants has occurred between the disposal pit and beyond the fire pond it does not necessarily demonstrate that ERM-5S is the furthest downgradient advance of contaminants in ground water It is possible that the leading edge of contamshy

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t Cancentnac

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New Erg lard 1nc

00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

^

ffl

j|

Key components of ERMs investigation included

compilation of a detailed site history based on correspondence between Tansitor VTDEC and EPA personnel This compilation is attached as Appendix A

compilation of a related summary of historical water quality data for the site for the period between 1983 and 1988 which is included as Appendix B to this report and

- installation and sampling of monitoring wells and preparation of well logs in Appendix C

12 Purpose and Scope

The purpose of the investigation was to

1 determine the type and amounts of chemicals disposed in the disposal pit on the northern side of the site

2 obtain information to aid in evaluating the vertical and lateral extent of Volatile Organic Compounds (VOCs)

in ground and surface water and

3 evaluate on a preliminary basis the potential environmental risks associated with the disposal pit

The scope of work is intended to provide a preliminary characterization of site contamination downgradient of the

disposal pit and is not intended to fully characterize the site No other areas on site were evaluated Additional studies may be

necessary to completely evaluate soil and ground water quality at the site

ERMs November 1988 workplan identified a fourth purpose which was to characterize VOCs in the pit area The proposed location of ERM-2S in the pit area which would have addressed this purpose was altered after discussions with Tansitor personnel Since a soil remediation activity in the pit area is a probable outcome the location of ERM-2S was moved to a position downgradient of the pit so as not to be destroyed if soil is removed as part of a remedial activity

ERM contracted Alceon Corporation to evaluate the current data base relative to public health and environmental risk Due to the limited data available the preliminary evaluation of risk

was inconclusive Additional sampling events will address data gaps identified during this evaluation 1

A brief summary of the work scope follows ERM performed the following seven tasks to accomplish the goals of this investigation

Task 1 Task 2 Task 3 Task 4 Task 5 Task 6 Task 7

Review Existing Records Prepare a Health and Safety Plan Install Monitoring Wells Collect Samples and Survey Compile and Analyze Data Prepare Report Project Management

Results of this investigation do not include design of any remedial measures engineering cost estimates or comprehensive evaluation of potential risks

13 Site Description

Tansitor Electronics Inc is a manufacturer of electronic capacitors The Tansitor property is approximately 36 acres in size located in the Town of Bennington Vermont The site is in

91 the southwestern part of the state approximately 10 miles north of the Massachusetts border and approximately 06 miles east of the New York border (Figure 1)

The Tansitor property consists of the main manufacturing facility offices etch house parking areas open land and fire pond (Figure 2) The disposal pit lies approximately 400 feet upslope of the manufacturing building at an elevation of approximately 850 feet above Mean Sea Level (MSL) The firepond is 100 feet east of the manufacturing building and approximately 300 feet south of the disposal pit The firepond lies at the base of the slope below the disposal pit at an elevation of approximately 815 feet above MSL This pond serves as the primary source of water for the Bennington Fire Department during fires located west of Bennington

The surrounding area east and west of the site is primarily ruralresidential All of the nearby residents use ground water from the bedrock aquifer as their sole water source Whipstock Hill rises north of (behind) the facility A wetland exists on Tansitor property south of Route 9 in a stream valley which drains to the west An unnamed hill rises over 1900 feet above MSL south of the wetlands

The facility is over thirty years old and currently employs 184 people in the manufacture of tantalum electrolytic capacitors and chip type solid tantalum capacitors Production operations include

3 SO

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UH

CC

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S U

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I o H o

en

ra c

a ro

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Q

LU O LU _J

c g ra E o

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CO o CO

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TD |mdash

0)

ra O

I

2F5ro

Ogt^

croQ

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Q)

E0 oQ

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fy

0)

N

ra ID

O c 0

-^ o 2

1

CD t

E o o

E ra

_c c D

Q

_C

QJ

r^ ro

O Q)

CU jr O

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ra _

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omdash Q

-d

ugt CD

1 c O)

CO O

CO

^

-^

0 bull

- pressing of tantalum powder into pellets (anodes or cathodes)

- sintering in vacuum furnaces and anodizing the pellets using highly diluted solutions of nitric sulfuric and phosphoric acids and glycol

assembling the anodes and cathodes in tantalum silver or aluminum cases and

Completion of these assemblies using various welding technigues and custom built machinery

The electronic capacitors manufactured by Tansitor consist mainly of silver tantalum and palladium metals The process wastes generated from the manufacturing of these capacitors include metal plating solutions cleaning solvents degreasers and dilute acidcaustic solutions

The EPA has estimated that between 50 and 150 gallons per year of these wastes were disposed in an unlined disposal pit north of the facility between sometime after 1956 and late 1978 or early 1979 However chlorinated organic solvents primarily 111-trichloroethane were not used or disposed at the site until the mid-1970s

Ground water seeps discharge from the base of the slope south (downgradient) of the disposal pit Historical sampling in this area has shown elevated readings of VOCs The firepond at the base of the slope receives ground water discharge and has likewise been determined to contain elevated levels of VOCs The primary VOCs detected at the site to date have been 111-shytrichloroethane (TCA) and related chlorinated solvents

A detailed site history based on ERMs interviews and records review is presented in Appendix A

20 Methodology

The methodology used was in conformance to ASTM and EPA guidance documents ERM installed six monitoring wells and collected ground and surface water and soil samples during the winter of 198889 Field screening for VOCs was conducted on the split spoon soil samples from the soil borings No soil samples were delivered to a laboratory for analysis

ERM delivered water samples collected on January 3 1989 to Eastern Analytical Laboratories Inc of North Billerica Massachusetts for analysis (the resulting data were later shown to be invalid and thus were not used) VTDEC personnel delivered split water samples to the VTDEC laboratory for analysis The split VTDEC data are discussed exclusively in this report

Water samples were taken from two sources

ground water samples from the five shallow monitoring wells and

surface water samples from five historical sampling points

21 Monitoring Well Installations

211 Locations

Six wells were installed in five locations on the Tansitor Property (Figure 2) Well numbers followed by an S indicate a shallow overburden well with total depth less than 20 feet and well numbers followed by a D indicate deep overburden wells completed above the glacio-lacustrine clay layer

Well Location Purpose

ERM-1S About 75 north of Intended to be for background the disposal pit concentrations

ERM-2S About 150 south- Assess localized contaminant southwest of the transport and vertical disposal site distribution in the soil

ERM-3S Downgradient of pit Evaluate potential flow around at northeast corner the eastern side of the fire of the fire pond pond

The

ERM-4S About 400 south ofERM-2S at the northwest

Evaluate potential flow around the western side of the fire

corner of the fire pond pond

EKM-5S Southeast side offire pond

To assess shallow transport beyond the fire pond and

vertical flow

ERM-5D Southeast side of To assess deep transport fire pond underneath the fire pond

and vertical flow

212 Drilling Methodology

ERM subcontracted with CATOH Environmental Companies Inc of Albany NY for drilling services Several different drilling methods were used depending upon the soil type and total well depth Precautions were taken to assure that no cross contamination between aquifers occurred during drilling A Mobile B-61 Drill Rig capable of both rotary and hollow stem auger drilling was used Appendix C includes detailed drilling logs graphic logs and well construction diagrams

Well ERM-1S was drilled to a depth of 17 feet and wells ERM-3S 4S and 5S were drilled to 18 feet deep using 425 inch ID hollow stem augers

Well ERM-2S was begun using 625 inch inner diameter (ID) hollow stem augers (HSA) An increase in soil compaction required a change to rotary drilling at a depth of 34 feet Air rotary with a nominal six inch diameter tricone bit was used from 34 to 39 feet below ground surface Sand began to clog the bit at a depth of 39 feet Nominal four inch diameter steel casing was driven to 39 feet and the drilling method was changed to wash rotary with a nominal four inch diameter tricone bit The casing kept the sand from caving into the boring and sealed off the potentially contaminated soils above 39 feet from the deeper soils Wash rotary drilling was continued until the final boring depth 60 feet was achieved This boring was filled up to 19 feet below grade with bentonite to complete the well in the most contaminated zone based on the field screening of split spoon sediments

Monitoring well ERM-5D was drilled with 625 inch ID HSA to a depth of 20 feet An increase in soil density required a change in drilling method to wash rotary using a nominal four inch diameter tricone bit At a depth of 37 feet sand began to fill the boring and nominal four inch diameter steel casing was driven to a depth of 35 feet As with well ERM-2S the casing isolated the surface sediments The final depth of this boring was 57 feet however the boring was backfilled with bentonite up to 34 feet below grade above which the well was completed

213 Soil Sampling and Analysis

ERM performed standard split spoon sampling in accordance with ASTM standards (at intervals of five feet) in all soil borings during drilling An ERM hydrogeologist logged all samples describing all lithologic variations Samples were then stored in glass jars covered with aluminum foil capped and labelled Name of sample date time depth and blowcounts are labelled on each jar

ERM screened soil samples via headspace analysis using a portable field detector for organic vapors Either a photoionization detector (HNU PI-101) or a flame ionization detector (Foxboro Instruments OVA Model 128) was used In most cases organic vapors were measured both when the split spoon was opened and 24 hours later The 24 hour measurement is taken from the headspace by puncturing the aluminum foil in the sample jar after the sample is allowed to equilibrate at room temperature No soil samples were delivered to a laboratory for analysis

214 Well Construction

Following completion of the borings to total depth a one to two foot thick sandpack was added as a foundation for the well casing and to prevent the clogging of the screen with fine material from the formation In ERM-2S and -5D bentonite was used to fill in the borings from 60 to 19 feet below grade and 57 to 34 feet below grade respectively prior to the addition of the sandpack This was done so that the well screens could be set in the zone of highest contamination based on field screening

Two-inch diameter 0020 inch slot 304 stainless steel screen and riser were used for well construction Five feet of slotted screen was used in ERM-5D Ten feet of slotted screen was used in each of the shallow overburden wells Stainless steel centralizers were used in all wells to ensure that the screen was vertical and that the well was located in the center of the boring

The sandpack was deposited around the screened interval and extended approximately two feet above the top of the screen A bentonite pellet layer was then deposited above the sandpack to form a two-to-five foot seal A bentonite-cement grout was used to seal the remainder of the boring The top three to five feet of the boring consisted of Portland cement to provide a strong foundation for a protective steel casing The stainless steel risers protrude approximately two feet above the ground surface The protective casings are secured with locking caps

CATOH Environmental developed the wells following completion by pumping water from the well until the water became clear

22 Surveying Gauging and Collecting Water Samples

ERM subcontracted Gerald E Morrissey Inc of Bennington Vermont to survey all monitoring well locations at the site to a US Coast amp Geodetic Survey datum Elevations at the ground surface the top of the outer well casing and the top inner stainless steel pipe casing were measured

Prior to any ground water sampling an ERM hydrogeologist measured static water levels to the nearest one-hundredth of a foot The water in ERM-5D was frozen but a measurement was taken to the top of the ice Total depth was measured in all wells but ERM-5D and -3S A plug of ice prohibited measurement of total depth in ERM-3S

An ERM hydrogeologist evacuated at least three well volumes of water from the wells using dedicated bottom filling PVC bailers VTDEC personnel then collected samples for analysis of volatile organics by EPA Method 601602 In addition the Vermont DEC collected samples for analysis of priority pollutant metals

Surface water samples were collected by submersing vials and jars in the streams as designated on Figure 2 Analysis of surface water samples was identical to that of ground water samples

ERM collected samples which were delivered to Eastern Analytical Laboratories Inc (EAL) of North Billerica Massachusetts Because of maintenance being performed on EALs GCMS the samples were delivered to Toxicon Laboratories of Woburn Massachusetts The resulting data were determined by ERM to be invalid due to poor intralab chain-of-custody protocols at Toxicon and inconsistencies in laboratory procedures by Toxicon personnel

30 RESULTS AND DISCUSSION

3 1 Physiography and Regional Geology

The Tansitor site is in the southwestern corner of Vermont (Figure 1) in the Taconic Range This area is in the Hudson River basin The site is at the southern base of Whipstock Hill approximately 35 miles west of the center of Bennington Vermont An unnamed hill lies directly south across the valley

The geology of the vicinity is characterized by an overburden of glacial materials underlain by Walloomsic Slate No bedrock outcrops were observed on site The valley in which Tansitor is located was part of a glacial lake when recessional moraines blocked the valley drainage to the west A glacioshylacustrine clay deposit formed in the lake bottom and was later covered with till The extent of this clay is not well-documented in the literature

It is unclear whether this clay layer is continuous across the valley and whether it would act as an effective barrier to downward migration of contaminants into the bedrock ag_uifer The EPAs Site Inspection report states that the depth to bedrock (slate) at the Severs1 property 600 feet west of the site is 80 feet which if correct would indicate the absence of an effective clay layer at that location However if the wetlands or stream south of Route 9 represent a ground water discharge zone the presence of a limited on-site clay layer could prevent migration of contaminants into the bedrock These issues will be resolved in future investigations

The topographic slope is to the southeast An unnamed perennial stream is located across Route 9 from the site and flows towards the southwest for about 05 miles before entering Browns Brook which flows west about four miles before entering the Hoosic River An intermittent stream begins near the northeastern corner of the main building and joins the perennial stream in the wetland south of the site

3 2 Site Geology

The overburden at the Tansitor site consists of glacial tills and glacio-lacustrine clays Figure 3a shows the location of an on-site cross-section Figure 3b is a generalized cross-section for the site The till matrix is primarily mixed clays and silts with up to 40 percent sand and gravel In general till compaction increases with depth and with an increase in clay content The exact thickness of the overburden is unknown Sorption of contaminants onto the overburden sediments is likely enhanced by the high clay content of the till which could retard the movement of the contaminants

11 The

o o o o o o CO CO rr CJ o CO CO CO CO 00 CO

uea|j

A compact orange silty clay of glacio-lacustrine origin was found in both ERM-2S and ERM-5D at respective depths of 44 and 50 feet below grade (798 and 770 feet above Mean Sea Level) The thickness of this layer is a minimum of seven feet at ERM-5D and a minimum of 18 feet at ERM-2S (both borings were halted before the clays were completely penetrated) The other shallow wells were not advanced deep enough to intercept the clay layer

Within the till layer in ERM-2S and -5D a significant increase in the number of blow counts occurred at 10 and 15 feet respectively This reflects an increase in sediment compaction at these depths Since the sediment texture is the same above and below these intervals it is likely that the upper layer represents disturbed sediments possibly a collapse or slump structure

A lens of gray clay was found between 10 and 12 feet below ground level in ERM-4S The degree to which this may act as an impermeable barrier depends in part on the lateral extent of the clay lens

Both ERM-4S and -5D have seams of fine sand bedded with the silty clays At ERM-2S a three foot diameter boulder was intersected

Bedrock was not encountered in any of the borings Contrary to prior reports bedrock does not appear to outcrop in the immediate vicinity of the disposal pit The only bedrock outcrops observed were on the northern side of Whipstock Hill far upgradient of the site

3 3 Soil Quality

Previous soil sampling by Tansitor in the disposal pit area is described in Appendix A No additional sampling in this area was performed by ERM Results of ERMs field screening of split spoon soil samples are shown in Table 1 As indicated only one sample at the zero to 20 foot depth from the ERM-1S boring had a detection using an HNU meter The reading of 20 ppm could be due to the moisture content of the soil or the presence of VOCs Only laboratory or other more accurate analysis could confirm the presence of VOCs Future soil sampling in the disposal pit area should address this issue

In boring ERM-2S all samples between 50 and 44 feet below grade had detections of volatile organics The highest concentrations in this boring were detected between 50 and 12 feet below ground level (up to 700 ppm) At 44 feet below grade a tight clay was encountered and no volatiles were detected below this point The spoon collected above the clay layer at 40 to 42 feet below grade had a concentration of 50 ppm which is

14

Table 1

Results of Field Screening of Split Spoon Sediments

(ppm)

24 HOUR 24 HOUR

WELL NO DEPTH ON SITE HEADSPACE WELL NO DEPTH ON SITE HEADSPACE

1S 0-2 2 4S 0-2 ND ND

5-7 ND ND 5-7 lt1 ND

10-12 ND ND 10-12 ND ND

15-17 ND ND 15-17 ND ND

18-20 ND ND

2S 0-2 ND

5-7 -shy gt100 5D 0-2 ND

10-12 -shy 700 5-7 -- 3

15-17 -shy 85 10-12 -- 1

20-22 -shy 4 15-17 NO ND

25-27 -shy 6 20-22 ND ND

30-32 -shy 10 25-27 NO ND

325-34 -shy 65 30-32 80 ND

39-40 -shy 30 35-37 ND NO

40-42 -shy 5 40-42 ND ND

45-47 NO ND 45-47 ND NO

50-52 ND ND 50-52 ND NO

55-57 ND ND 55-57 NO ND

60-62 ND

-shy INDICATES THAT NO READING WAS TAKEN

3S 0-2 ND ND

5-7 ND ND ONLY PEAK CONCENTRATIONS ARE LISTED

10-12 ND ND

I | 15-17 I lt1 ND

I | 18-20 I lt1 2

The

significantly below the peak concentrations in the boring This concentration which is far below the solubility limit of the VOCs detected at the site would indicate that a Dense Non-Aqueous Phase Liquid (DNAPL) is not present above the clay layer at this location Based on these readings the well screen for EPxM-2S was set between 70 and 17 feet below grade

ERM-3S had minor detections between 15 and 20 feet below grade of 20 ppm or less ERM-4S had a trace detection at the 50 to 70 foot interval of less than 10 ppm Similarly concentrations of 30 ppm or less were detected between 50 and 12 feet below grade in ERM-5D

The Vermont unofficial unpublished guidelines for soil removal are based on RCPJV landban requirements The general guidance is to multiply the landban concentration by a factor of 20 In the absence of a landban value the MCL multiplied by a factor of 20 should be used For constituents at the site the following guidelines may be applicable

Consituent Remediation Guideline

111-trichloroethane 8200 ppb (landban-based)

trichloroethene 100 ppb (MCL-based)

chloroform 2000 ppb (MCL-based)

11-dichloroethene 140 ppb (MCL-based)

tetrachloroethene 100 ppb ( p r o p o s e d based)

MCL-

11-dichloroethane 1400 ppb (based on VT water quality guideline)

Since these guidelines are chemical-specific laboratory analyses of soil samples are necessary to determine soil remediation levels for the Tansitor site ERM did not submit any soil samples for laboratory analysis during this investigation although prior investigations included soil sampling and analysis in the disposal pit area (Appendix A)

Since a soil excavation or in-situ remediation would not normally extend below the water table the soil removal guidelines do not necessarily apply to samples collected below the water table Saturated contaminated sediments are generally addressed through a ground water remedial action

16 TtK

34 Hydroqeology and Water Quality

In order to assess potential impacts of the Tansitor disposal pit site EKM investigated ground and surface water conditions on and directly downgradient of the site As ground and surface water are interactive an analysis of both systems is necessary to assess potential migration of chemicals

For comparative purposes the Maximum Contaminant Levels (MCLs) used for defining drinking water quality are listed below for those chemicals present at the site

Parameter MCL (ppb)

11-dichloroethane 70 (VT guideline not an MCL) 11-dichloroethene 7 111-trichloroethane 200 trichloroethene 5 tetrachloroethene 5 (proposed MCL) chloroform 100 (total trihalomethanes)

341 Historical Water Quality

An extensive sampling history exists at the site since 1983 Although limited ground water sampling occurred primarily in nearby water supply wells a large volume of surface water quality data exists Unfortunately the surface water sampling locations were never standardized by staking locations in the field Therefore it is difficult to generate trends over time at specific locations The surface water sampling points should be considered approximate locations Appendix B contains a summary of all water samples collected at and near the Tansitor site

In terms of ground water quality results there has never been a detection of volatile organics in any of the residential water supply wells adjacent to the Tansitor site Only one sampling event (January 20 1984) indicated the possible presence of volatiles in the Tansitor tap water Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only detected once it is likely that this detection was a false positive or indicative of laboratory contamination Follow-up sampling to this investigation will address residential well water quality

17 The

Group

342 Surface Water Quality

Surface water quality results from the January 3 1989 event are summarized in Table 2 and historical data appear in Appendix B Sampling locations are shown on Figure 2 As indicated

sample S-3 is located northeast of the firepond

- sample S-7 is located at an outfall of a pipeline originating at the firepond before entering the perennial stream

samples S-ll and S-13 represent upgradient and downgradient locations respectively on the perennial stream south of Route 9 and

- sample S-16 is located at an upgradient point on the intermittent stream north of the facility

Sample S-3 had no detections of VOCs This result is different from past sampling events (Appendix B) where S-3 was the most contaminated of any of the surface water locations After discussions with VTDEC personnel it appears that the location of S-3 has varied in the past Therefore no accurate trends can be determined at this time

VOC concentrations were non-detectable in S-ll S-7 had a total of 142 ppb and S-13 had a total of 24 ppb Based on the location of sampling points it appears that chemicals are entering the stream downgradient of S-ll either from tributary surface water sources or from ground water discharge The Maximum Contaminant Level (MCL) for 11-dichloroethane (11-DCA) has not been defined however the unofficial Vermont drinking water guideline of 70 ppb was not exceeded The MCLs for 11shydichloroethene (11-DCE) and 11 1-trichloroethane (TCA) the other two chemicals detected in S-7 and S-13 were also not exceeded The MCLs are presented here for comparative purposes alone since the stream is not a likely source of drinking water

Sample S-16 collected from the on-site intermittent stream had a concentration of 16615 ppb of total volatiles which exceeds drinking water standards for all constituents detected This concentration may be due to ground water discharge from the slope north of the firepond some of which drains west into the intermittent stream The presence of tetrachloroethene (PCE) at 20 ppb which was not detected anywhere else at the site warrants further investigation in this area

18 The

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343 Ground Water Flow and Direction

Figure 4 shows a water table map across the site Table 3 summarizes the water level data Ground water flow is locally towards the southeast at the site at a gradient of approximately 0065 ftft

Flow Rates

Using the natural range of values below and the modified Darcy equation the average linear velocity for the ground water in the overburden above the clay at the site is probably between 67 ftyr and 0027 ftyr

hydraulic conductivity 10~4 to 10~7 cmsec of till (K) (after Freeze amp Cherry

1979)

hydraulic gradient (i) 0065 ftft (calculated between

ERM-1S and -5S)

effective porosity (n) 10 to 25

v = (Ki)n

Although permeability (K) data were not obtained during this initial investigation a likely value of permeability is 10~4

cmsec with an effective porosity of 20 which would result in an average linear velocity of 34 ftyr for the upper till zone Field permeability testing is warranted to refine this estimate The more compact lower till likely has a lower permeability which would result in a lower average linear velocity which could restrict contaminant transport

In terms of a sensitivity analysis for the above equation velocity and effective porosity are inversely proportional Therefore a larger effective porosity would result in a slower average linear velocity A higher permeability would result in a higher velocity Applying these velocity estimates to contaminant transport must take into account dispersion and retardation effects

Vertical Gradients

At the time that ERM measured the water levels in the monitoring wells water in ERM-5D was frozen in the casing above ground level This is due to a high water level The depth to ice can not be directly correlated to depth to water in this well because of expansion effects however the difference is not

20

tennis courts

S-l 1 1 ntsrml ttsrjlt stream

perannial stream

_EGEND

Surfccs Water Samp1e

fanitor(ng Wei 1

Water Table Elevatlor ~t above MSL)

Water Taole Contours

D1rect1 on of G^ourcwator F 1 ov

SCALE (feet)

bull00 280 300 400

N

ERM i gare 4 New Engona ~c

Tensi tor E i e c ^ r c n i c s Inc

Genera i zed

vater Tao le E eva t ion Map

for Jani^arj 3 1989

WELL

ERM IS

ERM 2S

ERM 3S

ERM 4S

ERM 5S

ERM 5D

Table 3

WATER GAUGING AND SURVEY DATA

MP ELEVATION

ft above MSL

86029

84387

82262

81995

82238

82237

DEPTH TO

WATER

ft below MP

9 10

3 46

160

348

9 00

100

TOTAL DEPTH

ft below MP

1345

1980

1620

17 75

WATER TABLE ELEVATION

ft above MSL

851 19

84041

82102

81647

813 38

82137

All measurements made on January 3 1989 by ERM

Frozen plug prevented measurement Depth to ice

The

Group

likely to exceed a couple of inches The difference in the depth to ice in ERM-5D and the depth to water in ERM-5S is about eight feet This represents a strong upward vertical gradient especially since ERM-5S is screened between 6 and 16 feet below grade and EKM-5D is screened between 27 and 32 feet below grade

Although ERM-5S and -5D are screened in similar strata based on sediment texture the blow counts increased considerably beyond 15 feet below grade indicating a tighter zone as described earlier The increased compaction with depth and the upward vertical gradient would tend to hinder the downward migration of dissolved contaminants in this area Dissolved contaminant flow is probably concentrated in the upper till layer due to these combined factors

Because of the difference in density between water and organic solvents a vertical gradient alone would not prohibit the downward migration of a DNAPL As discussed earlier however there is currently no evidence to indicate the presence of a DNAPL

344 Ground Water Quality

Organics

Table 4 is a summary of volatile organic concentrations in ground water (as determined by the VTDEC laboratory) from the on-site monitoring wells installed by ERM Figure 5 shows the generalized TCA plume at the site Five solvent-related compounds from the EPA Method 624 suite of parameters were identified in the overburden at the site Well ERM-5D was frozen above ground at the time of sampling and therefore no data is available

Of the six compounds detected at the site several are likely breakdown products of the more prevalent contaminants TCA is known to break down abiotically to 11-DCE and through biodegradation to 11-DCA The kinetics of the reactions favor the formation of 11-DCA It is likely that the remaining constituents trichloroethene (TCE) tetrachloroethene (PCE) and chloroform are virgin chemicals

The upgradient and downgradient wells EPJM-1S and -5S both had non-detectable readings of volatile organic chemicals This would indicate that no additional sources of ground water contamination exist upgradient of the disposal pit Although the non-detectable reading in ERM-5S indicates that considerable attenuation of contaminants has occurred between the disposal pit and beyond the fire pond it does not necessarily demonstrate that ERM-5S is the furthest downgradient advance of contaminants in ground water It is possible that the leading edge of contamshy

23 Thlaquo

Group

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perennial strsam

Surface Wcw2r~ Sample

N 100

Mom tor irg We I

TCA (ODD) D or nondetsctacia

t Cancentnac

ERM F -e o Sea 1e ( Fee t )

New Erg lard 1nc

00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

A brief summary of the work scope follows ERM performed the following seven tasks to accomplish the goals of this investigation

Task 1 Task 2 Task 3 Task 4 Task 5 Task 6 Task 7

Review Existing Records Prepare a Health and Safety Plan Install Monitoring Wells Collect Samples and Survey Compile and Analyze Data Prepare Report Project Management

Results of this investigation do not include design of any remedial measures engineering cost estimates or comprehensive evaluation of potential risks

13 Site Description

Tansitor Electronics Inc is a manufacturer of electronic capacitors The Tansitor property is approximately 36 acres in size located in the Town of Bennington Vermont The site is in

91 the southwestern part of the state approximately 10 miles north of the Massachusetts border and approximately 06 miles east of the New York border (Figure 1)

The Tansitor property consists of the main manufacturing facility offices etch house parking areas open land and fire pond (Figure 2) The disposal pit lies approximately 400 feet upslope of the manufacturing building at an elevation of approximately 850 feet above Mean Sea Level (MSL) The firepond is 100 feet east of the manufacturing building and approximately 300 feet south of the disposal pit The firepond lies at the base of the slope below the disposal pit at an elevation of approximately 815 feet above MSL This pond serves as the primary source of water for the Bennington Fire Department during fires located west of Bennington

The surrounding area east and west of the site is primarily ruralresidential All of the nearby residents use ground water from the bedrock aquifer as their sole water source Whipstock Hill rises north of (behind) the facility A wetland exists on Tansitor property south of Route 9 in a stream valley which drains to the west An unnamed hill rises over 1900 feet above MSL south of the wetlands

The facility is over thirty years old and currently employs 184 people in the manufacture of tantalum electrolytic capacitors and chip type solid tantalum capacitors Production operations include

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- pressing of tantalum powder into pellets (anodes or cathodes)

- sintering in vacuum furnaces and anodizing the pellets using highly diluted solutions of nitric sulfuric and phosphoric acids and glycol

assembling the anodes and cathodes in tantalum silver or aluminum cases and

Completion of these assemblies using various welding technigues and custom built machinery

The electronic capacitors manufactured by Tansitor consist mainly of silver tantalum and palladium metals The process wastes generated from the manufacturing of these capacitors include metal plating solutions cleaning solvents degreasers and dilute acidcaustic solutions

The EPA has estimated that between 50 and 150 gallons per year of these wastes were disposed in an unlined disposal pit north of the facility between sometime after 1956 and late 1978 or early 1979 However chlorinated organic solvents primarily 111-trichloroethane were not used or disposed at the site until the mid-1970s

Ground water seeps discharge from the base of the slope south (downgradient) of the disposal pit Historical sampling in this area has shown elevated readings of VOCs The firepond at the base of the slope receives ground water discharge and has likewise been determined to contain elevated levels of VOCs The primary VOCs detected at the site to date have been 111-shytrichloroethane (TCA) and related chlorinated solvents

A detailed site history based on ERMs interviews and records review is presented in Appendix A

20 Methodology

The methodology used was in conformance to ASTM and EPA guidance documents ERM installed six monitoring wells and collected ground and surface water and soil samples during the winter of 198889 Field screening for VOCs was conducted on the split spoon soil samples from the soil borings No soil samples were delivered to a laboratory for analysis

ERM delivered water samples collected on January 3 1989 to Eastern Analytical Laboratories Inc of North Billerica Massachusetts for analysis (the resulting data were later shown to be invalid and thus were not used) VTDEC personnel delivered split water samples to the VTDEC laboratory for analysis The split VTDEC data are discussed exclusively in this report

Water samples were taken from two sources

ground water samples from the five shallow monitoring wells and

surface water samples from five historical sampling points

21 Monitoring Well Installations

211 Locations

Six wells were installed in five locations on the Tansitor Property (Figure 2) Well numbers followed by an S indicate a shallow overburden well with total depth less than 20 feet and well numbers followed by a D indicate deep overburden wells completed above the glacio-lacustrine clay layer

Well Location Purpose

ERM-1S About 75 north of Intended to be for background the disposal pit concentrations

ERM-2S About 150 south- Assess localized contaminant southwest of the transport and vertical disposal site distribution in the soil

ERM-3S Downgradient of pit Evaluate potential flow around at northeast corner the eastern side of the fire of the fire pond pond

The

ERM-4S About 400 south ofERM-2S at the northwest

Evaluate potential flow around the western side of the fire

corner of the fire pond pond

EKM-5S Southeast side offire pond

To assess shallow transport beyond the fire pond and

vertical flow

ERM-5D Southeast side of To assess deep transport fire pond underneath the fire pond

and vertical flow

212 Drilling Methodology

ERM subcontracted with CATOH Environmental Companies Inc of Albany NY for drilling services Several different drilling methods were used depending upon the soil type and total well depth Precautions were taken to assure that no cross contamination between aquifers occurred during drilling A Mobile B-61 Drill Rig capable of both rotary and hollow stem auger drilling was used Appendix C includes detailed drilling logs graphic logs and well construction diagrams

Well ERM-1S was drilled to a depth of 17 feet and wells ERM-3S 4S and 5S were drilled to 18 feet deep using 425 inch ID hollow stem augers

Well ERM-2S was begun using 625 inch inner diameter (ID) hollow stem augers (HSA) An increase in soil compaction required a change to rotary drilling at a depth of 34 feet Air rotary with a nominal six inch diameter tricone bit was used from 34 to 39 feet below ground surface Sand began to clog the bit at a depth of 39 feet Nominal four inch diameter steel casing was driven to 39 feet and the drilling method was changed to wash rotary with a nominal four inch diameter tricone bit The casing kept the sand from caving into the boring and sealed off the potentially contaminated soils above 39 feet from the deeper soils Wash rotary drilling was continued until the final boring depth 60 feet was achieved This boring was filled up to 19 feet below grade with bentonite to complete the well in the most contaminated zone based on the field screening of split spoon sediments

Monitoring well ERM-5D was drilled with 625 inch ID HSA to a depth of 20 feet An increase in soil density required a change in drilling method to wash rotary using a nominal four inch diameter tricone bit At a depth of 37 feet sand began to fill the boring and nominal four inch diameter steel casing was driven to a depth of 35 feet As with well ERM-2S the casing isolated the surface sediments The final depth of this boring was 57 feet however the boring was backfilled with bentonite up to 34 feet below grade above which the well was completed

213 Soil Sampling and Analysis

ERM performed standard split spoon sampling in accordance with ASTM standards (at intervals of five feet) in all soil borings during drilling An ERM hydrogeologist logged all samples describing all lithologic variations Samples were then stored in glass jars covered with aluminum foil capped and labelled Name of sample date time depth and blowcounts are labelled on each jar

ERM screened soil samples via headspace analysis using a portable field detector for organic vapors Either a photoionization detector (HNU PI-101) or a flame ionization detector (Foxboro Instruments OVA Model 128) was used In most cases organic vapors were measured both when the split spoon was opened and 24 hours later The 24 hour measurement is taken from the headspace by puncturing the aluminum foil in the sample jar after the sample is allowed to equilibrate at room temperature No soil samples were delivered to a laboratory for analysis

214 Well Construction

Following completion of the borings to total depth a one to two foot thick sandpack was added as a foundation for the well casing and to prevent the clogging of the screen with fine material from the formation In ERM-2S and -5D bentonite was used to fill in the borings from 60 to 19 feet below grade and 57 to 34 feet below grade respectively prior to the addition of the sandpack This was done so that the well screens could be set in the zone of highest contamination based on field screening

Two-inch diameter 0020 inch slot 304 stainless steel screen and riser were used for well construction Five feet of slotted screen was used in ERM-5D Ten feet of slotted screen was used in each of the shallow overburden wells Stainless steel centralizers were used in all wells to ensure that the screen was vertical and that the well was located in the center of the boring

The sandpack was deposited around the screened interval and extended approximately two feet above the top of the screen A bentonite pellet layer was then deposited above the sandpack to form a two-to-five foot seal A bentonite-cement grout was used to seal the remainder of the boring The top three to five feet of the boring consisted of Portland cement to provide a strong foundation for a protective steel casing The stainless steel risers protrude approximately two feet above the ground surface The protective casings are secured with locking caps

CATOH Environmental developed the wells following completion by pumping water from the well until the water became clear

22 Surveying Gauging and Collecting Water Samples

ERM subcontracted Gerald E Morrissey Inc of Bennington Vermont to survey all monitoring well locations at the site to a US Coast amp Geodetic Survey datum Elevations at the ground surface the top of the outer well casing and the top inner stainless steel pipe casing were measured

Prior to any ground water sampling an ERM hydrogeologist measured static water levels to the nearest one-hundredth of a foot The water in ERM-5D was frozen but a measurement was taken to the top of the ice Total depth was measured in all wells but ERM-5D and -3S A plug of ice prohibited measurement of total depth in ERM-3S

An ERM hydrogeologist evacuated at least three well volumes of water from the wells using dedicated bottom filling PVC bailers VTDEC personnel then collected samples for analysis of volatile organics by EPA Method 601602 In addition the Vermont DEC collected samples for analysis of priority pollutant metals

Surface water samples were collected by submersing vials and jars in the streams as designated on Figure 2 Analysis of surface water samples was identical to that of ground water samples

ERM collected samples which were delivered to Eastern Analytical Laboratories Inc (EAL) of North Billerica Massachusetts Because of maintenance being performed on EALs GCMS the samples were delivered to Toxicon Laboratories of Woburn Massachusetts The resulting data were determined by ERM to be invalid due to poor intralab chain-of-custody protocols at Toxicon and inconsistencies in laboratory procedures by Toxicon personnel

30 RESULTS AND DISCUSSION

3 1 Physiography and Regional Geology

The Tansitor site is in the southwestern corner of Vermont (Figure 1) in the Taconic Range This area is in the Hudson River basin The site is at the southern base of Whipstock Hill approximately 35 miles west of the center of Bennington Vermont An unnamed hill lies directly south across the valley

The geology of the vicinity is characterized by an overburden of glacial materials underlain by Walloomsic Slate No bedrock outcrops were observed on site The valley in which Tansitor is located was part of a glacial lake when recessional moraines blocked the valley drainage to the west A glacioshylacustrine clay deposit formed in the lake bottom and was later covered with till The extent of this clay is not well-documented in the literature

It is unclear whether this clay layer is continuous across the valley and whether it would act as an effective barrier to downward migration of contaminants into the bedrock ag_uifer The EPAs Site Inspection report states that the depth to bedrock (slate) at the Severs1 property 600 feet west of the site is 80 feet which if correct would indicate the absence of an effective clay layer at that location However if the wetlands or stream south of Route 9 represent a ground water discharge zone the presence of a limited on-site clay layer could prevent migration of contaminants into the bedrock These issues will be resolved in future investigations

The topographic slope is to the southeast An unnamed perennial stream is located across Route 9 from the site and flows towards the southwest for about 05 miles before entering Browns Brook which flows west about four miles before entering the Hoosic River An intermittent stream begins near the northeastern corner of the main building and joins the perennial stream in the wetland south of the site

3 2 Site Geology

The overburden at the Tansitor site consists of glacial tills and glacio-lacustrine clays Figure 3a shows the location of an on-site cross-section Figure 3b is a generalized cross-section for the site The till matrix is primarily mixed clays and silts with up to 40 percent sand and gravel In general till compaction increases with depth and with an increase in clay content The exact thickness of the overburden is unknown Sorption of contaminants onto the overburden sediments is likely enhanced by the high clay content of the till which could retard the movement of the contaminants

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A compact orange silty clay of glacio-lacustrine origin was found in both ERM-2S and ERM-5D at respective depths of 44 and 50 feet below grade (798 and 770 feet above Mean Sea Level) The thickness of this layer is a minimum of seven feet at ERM-5D and a minimum of 18 feet at ERM-2S (both borings were halted before the clays were completely penetrated) The other shallow wells were not advanced deep enough to intercept the clay layer

Within the till layer in ERM-2S and -5D a significant increase in the number of blow counts occurred at 10 and 15 feet respectively This reflects an increase in sediment compaction at these depths Since the sediment texture is the same above and below these intervals it is likely that the upper layer represents disturbed sediments possibly a collapse or slump structure

A lens of gray clay was found between 10 and 12 feet below ground level in ERM-4S The degree to which this may act as an impermeable barrier depends in part on the lateral extent of the clay lens

Both ERM-4S and -5D have seams of fine sand bedded with the silty clays At ERM-2S a three foot diameter boulder was intersected

Bedrock was not encountered in any of the borings Contrary to prior reports bedrock does not appear to outcrop in the immediate vicinity of the disposal pit The only bedrock outcrops observed were on the northern side of Whipstock Hill far upgradient of the site

3 3 Soil Quality

Previous soil sampling by Tansitor in the disposal pit area is described in Appendix A No additional sampling in this area was performed by ERM Results of ERMs field screening of split spoon soil samples are shown in Table 1 As indicated only one sample at the zero to 20 foot depth from the ERM-1S boring had a detection using an HNU meter The reading of 20 ppm could be due to the moisture content of the soil or the presence of VOCs Only laboratory or other more accurate analysis could confirm the presence of VOCs Future soil sampling in the disposal pit area should address this issue

In boring ERM-2S all samples between 50 and 44 feet below grade had detections of volatile organics The highest concentrations in this boring were detected between 50 and 12 feet below ground level (up to 700 ppm) At 44 feet below grade a tight clay was encountered and no volatiles were detected below this point The spoon collected above the clay layer at 40 to 42 feet below grade had a concentration of 50 ppm which is

14

Table 1

Results of Field Screening of Split Spoon Sediments

(ppm)

24 HOUR 24 HOUR

WELL NO DEPTH ON SITE HEADSPACE WELL NO DEPTH ON SITE HEADSPACE

1S 0-2 2 4S 0-2 ND ND

5-7 ND ND 5-7 lt1 ND

10-12 ND ND 10-12 ND ND

15-17 ND ND 15-17 ND ND

18-20 ND ND

2S 0-2 ND

5-7 -shy gt100 5D 0-2 ND

10-12 -shy 700 5-7 -- 3

15-17 -shy 85 10-12 -- 1

20-22 -shy 4 15-17 NO ND

25-27 -shy 6 20-22 ND ND

30-32 -shy 10 25-27 NO ND

325-34 -shy 65 30-32 80 ND

39-40 -shy 30 35-37 ND NO

40-42 -shy 5 40-42 ND ND

45-47 NO ND 45-47 ND NO

50-52 ND ND 50-52 ND NO

55-57 ND ND 55-57 NO ND

60-62 ND

-shy INDICATES THAT NO READING WAS TAKEN

3S 0-2 ND ND

5-7 ND ND ONLY PEAK CONCENTRATIONS ARE LISTED

10-12 ND ND

I | 15-17 I lt1 ND

I | 18-20 I lt1 2

The

significantly below the peak concentrations in the boring This concentration which is far below the solubility limit of the VOCs detected at the site would indicate that a Dense Non-Aqueous Phase Liquid (DNAPL) is not present above the clay layer at this location Based on these readings the well screen for EPxM-2S was set between 70 and 17 feet below grade

ERM-3S had minor detections between 15 and 20 feet below grade of 20 ppm or less ERM-4S had a trace detection at the 50 to 70 foot interval of less than 10 ppm Similarly concentrations of 30 ppm or less were detected between 50 and 12 feet below grade in ERM-5D

The Vermont unofficial unpublished guidelines for soil removal are based on RCPJV landban requirements The general guidance is to multiply the landban concentration by a factor of 20 In the absence of a landban value the MCL multiplied by a factor of 20 should be used For constituents at the site the following guidelines may be applicable

Consituent Remediation Guideline

111-trichloroethane 8200 ppb (landban-based)

trichloroethene 100 ppb (MCL-based)

chloroform 2000 ppb (MCL-based)

11-dichloroethene 140 ppb (MCL-based)

tetrachloroethene 100 ppb ( p r o p o s e d based)

MCL-

11-dichloroethane 1400 ppb (based on VT water quality guideline)

Since these guidelines are chemical-specific laboratory analyses of soil samples are necessary to determine soil remediation levels for the Tansitor site ERM did not submit any soil samples for laboratory analysis during this investigation although prior investigations included soil sampling and analysis in the disposal pit area (Appendix A)

Since a soil excavation or in-situ remediation would not normally extend below the water table the soil removal guidelines do not necessarily apply to samples collected below the water table Saturated contaminated sediments are generally addressed through a ground water remedial action

16 TtK

34 Hydroqeology and Water Quality

In order to assess potential impacts of the Tansitor disposal pit site EKM investigated ground and surface water conditions on and directly downgradient of the site As ground and surface water are interactive an analysis of both systems is necessary to assess potential migration of chemicals

For comparative purposes the Maximum Contaminant Levels (MCLs) used for defining drinking water quality are listed below for those chemicals present at the site

Parameter MCL (ppb)

11-dichloroethane 70 (VT guideline not an MCL) 11-dichloroethene 7 111-trichloroethane 200 trichloroethene 5 tetrachloroethene 5 (proposed MCL) chloroform 100 (total trihalomethanes)

341 Historical Water Quality

An extensive sampling history exists at the site since 1983 Although limited ground water sampling occurred primarily in nearby water supply wells a large volume of surface water quality data exists Unfortunately the surface water sampling locations were never standardized by staking locations in the field Therefore it is difficult to generate trends over time at specific locations The surface water sampling points should be considered approximate locations Appendix B contains a summary of all water samples collected at and near the Tansitor site

In terms of ground water quality results there has never been a detection of volatile organics in any of the residential water supply wells adjacent to the Tansitor site Only one sampling event (January 20 1984) indicated the possible presence of volatiles in the Tansitor tap water Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only detected once it is likely that this detection was a false positive or indicative of laboratory contamination Follow-up sampling to this investigation will address residential well water quality

17 The

Group

342 Surface Water Quality

Surface water quality results from the January 3 1989 event are summarized in Table 2 and historical data appear in Appendix B Sampling locations are shown on Figure 2 As indicated

sample S-3 is located northeast of the firepond

- sample S-7 is located at an outfall of a pipeline originating at the firepond before entering the perennial stream

samples S-ll and S-13 represent upgradient and downgradient locations respectively on the perennial stream south of Route 9 and

- sample S-16 is located at an upgradient point on the intermittent stream north of the facility

Sample S-3 had no detections of VOCs This result is different from past sampling events (Appendix B) where S-3 was the most contaminated of any of the surface water locations After discussions with VTDEC personnel it appears that the location of S-3 has varied in the past Therefore no accurate trends can be determined at this time

VOC concentrations were non-detectable in S-ll S-7 had a total of 142 ppb and S-13 had a total of 24 ppb Based on the location of sampling points it appears that chemicals are entering the stream downgradient of S-ll either from tributary surface water sources or from ground water discharge The Maximum Contaminant Level (MCL) for 11-dichloroethane (11-DCA) has not been defined however the unofficial Vermont drinking water guideline of 70 ppb was not exceeded The MCLs for 11shydichloroethene (11-DCE) and 11 1-trichloroethane (TCA) the other two chemicals detected in S-7 and S-13 were also not exceeded The MCLs are presented here for comparative purposes alone since the stream is not a likely source of drinking water

Sample S-16 collected from the on-site intermittent stream had a concentration of 16615 ppb of total volatiles which exceeds drinking water standards for all constituents detected This concentration may be due to ground water discharge from the slope north of the firepond some of which drains west into the intermittent stream The presence of tetrachloroethene (PCE) at 20 ppb which was not detected anywhere else at the site warrants further investigation in this area

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343 Ground Water Flow and Direction

Figure 4 shows a water table map across the site Table 3 summarizes the water level data Ground water flow is locally towards the southeast at the site at a gradient of approximately 0065 ftft

Flow Rates

Using the natural range of values below and the modified Darcy equation the average linear velocity for the ground water in the overburden above the clay at the site is probably between 67 ftyr and 0027 ftyr

hydraulic conductivity 10~4 to 10~7 cmsec of till (K) (after Freeze amp Cherry

1979)

hydraulic gradient (i) 0065 ftft (calculated between

ERM-1S and -5S)

effective porosity (n) 10 to 25

v = (Ki)n

Although permeability (K) data were not obtained during this initial investigation a likely value of permeability is 10~4

cmsec with an effective porosity of 20 which would result in an average linear velocity of 34 ftyr for the upper till zone Field permeability testing is warranted to refine this estimate The more compact lower till likely has a lower permeability which would result in a lower average linear velocity which could restrict contaminant transport

In terms of a sensitivity analysis for the above equation velocity and effective porosity are inversely proportional Therefore a larger effective porosity would result in a slower average linear velocity A higher permeability would result in a higher velocity Applying these velocity estimates to contaminant transport must take into account dispersion and retardation effects

Vertical Gradients

At the time that ERM measured the water levels in the monitoring wells water in ERM-5D was frozen in the casing above ground level This is due to a high water level The depth to ice can not be directly correlated to depth to water in this well because of expansion effects however the difference is not

20

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Water Table Elevatlor ~t above MSL)

Water Taole Contours

D1rect1 on of G^ourcwator F 1 ov

SCALE (feet)

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for Jani^arj 3 1989

WELL

ERM IS

ERM 2S

ERM 3S

ERM 4S

ERM 5S

ERM 5D

Table 3

WATER GAUGING AND SURVEY DATA

MP ELEVATION

ft above MSL

86029

84387

82262

81995

82238

82237

DEPTH TO

WATER

ft below MP

9 10

3 46

160

348

9 00

100

TOTAL DEPTH

ft below MP

1345

1980

1620

17 75

WATER TABLE ELEVATION

ft above MSL

851 19

84041

82102

81647

813 38

82137

All measurements made on January 3 1989 by ERM

Frozen plug prevented measurement Depth to ice

The

Group

likely to exceed a couple of inches The difference in the depth to ice in ERM-5D and the depth to water in ERM-5S is about eight feet This represents a strong upward vertical gradient especially since ERM-5S is screened between 6 and 16 feet below grade and EKM-5D is screened between 27 and 32 feet below grade

Although ERM-5S and -5D are screened in similar strata based on sediment texture the blow counts increased considerably beyond 15 feet below grade indicating a tighter zone as described earlier The increased compaction with depth and the upward vertical gradient would tend to hinder the downward migration of dissolved contaminants in this area Dissolved contaminant flow is probably concentrated in the upper till layer due to these combined factors

Because of the difference in density between water and organic solvents a vertical gradient alone would not prohibit the downward migration of a DNAPL As discussed earlier however there is currently no evidence to indicate the presence of a DNAPL

344 Ground Water Quality

Organics

Table 4 is a summary of volatile organic concentrations in ground water (as determined by the VTDEC laboratory) from the on-site monitoring wells installed by ERM Figure 5 shows the generalized TCA plume at the site Five solvent-related compounds from the EPA Method 624 suite of parameters were identified in the overburden at the site Well ERM-5D was frozen above ground at the time of sampling and therefore no data is available

Of the six compounds detected at the site several are likely breakdown products of the more prevalent contaminants TCA is known to break down abiotically to 11-DCE and through biodegradation to 11-DCA The kinetics of the reactions favor the formation of 11-DCA It is likely that the remaining constituents trichloroethene (TCE) tetrachloroethene (PCE) and chloroform are virgin chemicals

The upgradient and downgradient wells EPJM-1S and -5S both had non-detectable readings of volatile organic chemicals This would indicate that no additional sources of ground water contamination exist upgradient of the disposal pit Although the non-detectable reading in ERM-5S indicates that considerable attenuation of contaminants has occurred between the disposal pit and beyond the fire pond it does not necessarily demonstrate that ERM-5S is the furthest downgradient advance of contaminants in ground water It is possible that the leading edge of contamshy

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gti 4-) EH Q rH

C H o O O O o EH C O 2 CO ^f 31 O CN o gt o g O 01 [ rT rH rH T-J

1 P Q shy -0) ^ s 2 r- rH U3 in

K O o W rH

EH -H CD shyc lt X M CO o gtiT3

rH C

Q Q) rfl 3 2 amp CO P

i Q Q Q Q Q Q Ecc

O 01 0) rH OS 4-1 2 2 2 2 2 2 T3 O

sect0) C UO UX) CQ

0)

w (0

CO CO

4-1 2 o C O

-X O 4-gt

0) O C ampH O

2 en 03 W rH 0) 3 u rd C C 2 (d

o O I] (U a) x -H O c C 4-1 C rd rd CO 0) o U 0) X x o cu 0) SH a 4-J 4-1 lH C 4-gt ^ 4-) 0) Q) O Q) U O O TJ O o rH x 0) 4-1

QJ ^ gtH X 4-1 CO bullH g O o o cu

W O 4-1 gtH rH rH -H O O O -H Q -H ox XI rH r-l O o 2 4-gt HH O U EH O gt Ul

O P C O -H bullH 1 rH V) bull- 4-1 0 Q) U Q Q H x j OJ CO -H EH a 73 O 1 1 ~ O lt rH gt1

Z -H rH (H cH rH -H EH CL rH 3 o c x - -bull - SH O g rt3

o o P O ltH rH (H EH EH tlaquo C gt CO lt

Ths

wate 1 i no

1 ntsrm 1 tts stream

perennial strsam

Surface Wcw2r~ Sample

N 100

Mom tor irg We I

TCA (ODD) D or nondetsctacia

t Cancentnac

ERM F -e o Sea 1e ( Fee t )

New Erg lard 1nc

00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

3 SO

raquomdashlaquo

UH

CC

u O -shy Oj

S U

lt- c

^ o o ~

I o H o

en

ra c

a ro

o g

o c o o

Q

LU O LU _J

c g ra E o

u_ 5 0

c

g o

1

0) ro

CO o CO

E o -deg CO

5

4

OJ c o

ngt

^j c to T3 toci to O

I

0)

E o o o t1 C35

C

n CO c 0

TD |mdash

0)

ra O

I

2F5ro

Ogt^

croQ

~o

Q)

E0 oQ

o

g ~ -5shy

fy

0)

N

ra ID

O c 0

-^ o 2

1

CD t

E o o

E ra

_c c D

Q

_C

QJ

r^ ro

O Q)

CU jr O

O

c(Jajcr

ra _

uJ5

omdash Q

-d

ugt CD

1 c O)

CO O

CO

^

-^

0 bull

- pressing of tantalum powder into pellets (anodes or cathodes)

- sintering in vacuum furnaces and anodizing the pellets using highly diluted solutions of nitric sulfuric and phosphoric acids and glycol

assembling the anodes and cathodes in tantalum silver or aluminum cases and

Completion of these assemblies using various welding technigues and custom built machinery

The electronic capacitors manufactured by Tansitor consist mainly of silver tantalum and palladium metals The process wastes generated from the manufacturing of these capacitors include metal plating solutions cleaning solvents degreasers and dilute acidcaustic solutions

The EPA has estimated that between 50 and 150 gallons per year of these wastes were disposed in an unlined disposal pit north of the facility between sometime after 1956 and late 1978 or early 1979 However chlorinated organic solvents primarily 111-trichloroethane were not used or disposed at the site until the mid-1970s

Ground water seeps discharge from the base of the slope south (downgradient) of the disposal pit Historical sampling in this area has shown elevated readings of VOCs The firepond at the base of the slope receives ground water discharge and has likewise been determined to contain elevated levels of VOCs The primary VOCs detected at the site to date have been 111-shytrichloroethane (TCA) and related chlorinated solvents

A detailed site history based on ERMs interviews and records review is presented in Appendix A

20 Methodology

The methodology used was in conformance to ASTM and EPA guidance documents ERM installed six monitoring wells and collected ground and surface water and soil samples during the winter of 198889 Field screening for VOCs was conducted on the split spoon soil samples from the soil borings No soil samples were delivered to a laboratory for analysis

ERM delivered water samples collected on January 3 1989 to Eastern Analytical Laboratories Inc of North Billerica Massachusetts for analysis (the resulting data were later shown to be invalid and thus were not used) VTDEC personnel delivered split water samples to the VTDEC laboratory for analysis The split VTDEC data are discussed exclusively in this report

Water samples were taken from two sources

ground water samples from the five shallow monitoring wells and

surface water samples from five historical sampling points

21 Monitoring Well Installations

211 Locations

Six wells were installed in five locations on the Tansitor Property (Figure 2) Well numbers followed by an S indicate a shallow overburden well with total depth less than 20 feet and well numbers followed by a D indicate deep overburden wells completed above the glacio-lacustrine clay layer

Well Location Purpose

ERM-1S About 75 north of Intended to be for background the disposal pit concentrations

ERM-2S About 150 south- Assess localized contaminant southwest of the transport and vertical disposal site distribution in the soil

ERM-3S Downgradient of pit Evaluate potential flow around at northeast corner the eastern side of the fire of the fire pond pond

The

ERM-4S About 400 south ofERM-2S at the northwest

Evaluate potential flow around the western side of the fire

corner of the fire pond pond

EKM-5S Southeast side offire pond

To assess shallow transport beyond the fire pond and

vertical flow

ERM-5D Southeast side of To assess deep transport fire pond underneath the fire pond

and vertical flow

212 Drilling Methodology

ERM subcontracted with CATOH Environmental Companies Inc of Albany NY for drilling services Several different drilling methods were used depending upon the soil type and total well depth Precautions were taken to assure that no cross contamination between aquifers occurred during drilling A Mobile B-61 Drill Rig capable of both rotary and hollow stem auger drilling was used Appendix C includes detailed drilling logs graphic logs and well construction diagrams

Well ERM-1S was drilled to a depth of 17 feet and wells ERM-3S 4S and 5S were drilled to 18 feet deep using 425 inch ID hollow stem augers

Well ERM-2S was begun using 625 inch inner diameter (ID) hollow stem augers (HSA) An increase in soil compaction required a change to rotary drilling at a depth of 34 feet Air rotary with a nominal six inch diameter tricone bit was used from 34 to 39 feet below ground surface Sand began to clog the bit at a depth of 39 feet Nominal four inch diameter steel casing was driven to 39 feet and the drilling method was changed to wash rotary with a nominal four inch diameter tricone bit The casing kept the sand from caving into the boring and sealed off the potentially contaminated soils above 39 feet from the deeper soils Wash rotary drilling was continued until the final boring depth 60 feet was achieved This boring was filled up to 19 feet below grade with bentonite to complete the well in the most contaminated zone based on the field screening of split spoon sediments

Monitoring well ERM-5D was drilled with 625 inch ID HSA to a depth of 20 feet An increase in soil density required a change in drilling method to wash rotary using a nominal four inch diameter tricone bit At a depth of 37 feet sand began to fill the boring and nominal four inch diameter steel casing was driven to a depth of 35 feet As with well ERM-2S the casing isolated the surface sediments The final depth of this boring was 57 feet however the boring was backfilled with bentonite up to 34 feet below grade above which the well was completed

213 Soil Sampling and Analysis

ERM performed standard split spoon sampling in accordance with ASTM standards (at intervals of five feet) in all soil borings during drilling An ERM hydrogeologist logged all samples describing all lithologic variations Samples were then stored in glass jars covered with aluminum foil capped and labelled Name of sample date time depth and blowcounts are labelled on each jar

ERM screened soil samples via headspace analysis using a portable field detector for organic vapors Either a photoionization detector (HNU PI-101) or a flame ionization detector (Foxboro Instruments OVA Model 128) was used In most cases organic vapors were measured both when the split spoon was opened and 24 hours later The 24 hour measurement is taken from the headspace by puncturing the aluminum foil in the sample jar after the sample is allowed to equilibrate at room temperature No soil samples were delivered to a laboratory for analysis

214 Well Construction

Following completion of the borings to total depth a one to two foot thick sandpack was added as a foundation for the well casing and to prevent the clogging of the screen with fine material from the formation In ERM-2S and -5D bentonite was used to fill in the borings from 60 to 19 feet below grade and 57 to 34 feet below grade respectively prior to the addition of the sandpack This was done so that the well screens could be set in the zone of highest contamination based on field screening

Two-inch diameter 0020 inch slot 304 stainless steel screen and riser were used for well construction Five feet of slotted screen was used in ERM-5D Ten feet of slotted screen was used in each of the shallow overburden wells Stainless steel centralizers were used in all wells to ensure that the screen was vertical and that the well was located in the center of the boring

The sandpack was deposited around the screened interval and extended approximately two feet above the top of the screen A bentonite pellet layer was then deposited above the sandpack to form a two-to-five foot seal A bentonite-cement grout was used to seal the remainder of the boring The top three to five feet of the boring consisted of Portland cement to provide a strong foundation for a protective steel casing The stainless steel risers protrude approximately two feet above the ground surface The protective casings are secured with locking caps

CATOH Environmental developed the wells following completion by pumping water from the well until the water became clear

22 Surveying Gauging and Collecting Water Samples

ERM subcontracted Gerald E Morrissey Inc of Bennington Vermont to survey all monitoring well locations at the site to a US Coast amp Geodetic Survey datum Elevations at the ground surface the top of the outer well casing and the top inner stainless steel pipe casing were measured

Prior to any ground water sampling an ERM hydrogeologist measured static water levels to the nearest one-hundredth of a foot The water in ERM-5D was frozen but a measurement was taken to the top of the ice Total depth was measured in all wells but ERM-5D and -3S A plug of ice prohibited measurement of total depth in ERM-3S

An ERM hydrogeologist evacuated at least three well volumes of water from the wells using dedicated bottom filling PVC bailers VTDEC personnel then collected samples for analysis of volatile organics by EPA Method 601602 In addition the Vermont DEC collected samples for analysis of priority pollutant metals

Surface water samples were collected by submersing vials and jars in the streams as designated on Figure 2 Analysis of surface water samples was identical to that of ground water samples

ERM collected samples which were delivered to Eastern Analytical Laboratories Inc (EAL) of North Billerica Massachusetts Because of maintenance being performed on EALs GCMS the samples were delivered to Toxicon Laboratories of Woburn Massachusetts The resulting data were determined by ERM to be invalid due to poor intralab chain-of-custody protocols at Toxicon and inconsistencies in laboratory procedures by Toxicon personnel

30 RESULTS AND DISCUSSION

3 1 Physiography and Regional Geology

The Tansitor site is in the southwestern corner of Vermont (Figure 1) in the Taconic Range This area is in the Hudson River basin The site is at the southern base of Whipstock Hill approximately 35 miles west of the center of Bennington Vermont An unnamed hill lies directly south across the valley

The geology of the vicinity is characterized by an overburden of glacial materials underlain by Walloomsic Slate No bedrock outcrops were observed on site The valley in which Tansitor is located was part of a glacial lake when recessional moraines blocked the valley drainage to the west A glacioshylacustrine clay deposit formed in the lake bottom and was later covered with till The extent of this clay is not well-documented in the literature

It is unclear whether this clay layer is continuous across the valley and whether it would act as an effective barrier to downward migration of contaminants into the bedrock ag_uifer The EPAs Site Inspection report states that the depth to bedrock (slate) at the Severs1 property 600 feet west of the site is 80 feet which if correct would indicate the absence of an effective clay layer at that location However if the wetlands or stream south of Route 9 represent a ground water discharge zone the presence of a limited on-site clay layer could prevent migration of contaminants into the bedrock These issues will be resolved in future investigations

The topographic slope is to the southeast An unnamed perennial stream is located across Route 9 from the site and flows towards the southwest for about 05 miles before entering Browns Brook which flows west about four miles before entering the Hoosic River An intermittent stream begins near the northeastern corner of the main building and joins the perennial stream in the wetland south of the site

3 2 Site Geology

The overburden at the Tansitor site consists of glacial tills and glacio-lacustrine clays Figure 3a shows the location of an on-site cross-section Figure 3b is a generalized cross-section for the site The till matrix is primarily mixed clays and silts with up to 40 percent sand and gravel In general till compaction increases with depth and with an increase in clay content The exact thickness of the overburden is unknown Sorption of contaminants onto the overburden sediments is likely enhanced by the high clay content of the till which could retard the movement of the contaminants

11 The

o o o o o o CO CO rr CJ o CO CO CO CO 00 CO

uea|j

A compact orange silty clay of glacio-lacustrine origin was found in both ERM-2S and ERM-5D at respective depths of 44 and 50 feet below grade (798 and 770 feet above Mean Sea Level) The thickness of this layer is a minimum of seven feet at ERM-5D and a minimum of 18 feet at ERM-2S (both borings were halted before the clays were completely penetrated) The other shallow wells were not advanced deep enough to intercept the clay layer

Within the till layer in ERM-2S and -5D a significant increase in the number of blow counts occurred at 10 and 15 feet respectively This reflects an increase in sediment compaction at these depths Since the sediment texture is the same above and below these intervals it is likely that the upper layer represents disturbed sediments possibly a collapse or slump structure

A lens of gray clay was found between 10 and 12 feet below ground level in ERM-4S The degree to which this may act as an impermeable barrier depends in part on the lateral extent of the clay lens

Both ERM-4S and -5D have seams of fine sand bedded with the silty clays At ERM-2S a three foot diameter boulder was intersected

Bedrock was not encountered in any of the borings Contrary to prior reports bedrock does not appear to outcrop in the immediate vicinity of the disposal pit The only bedrock outcrops observed were on the northern side of Whipstock Hill far upgradient of the site

3 3 Soil Quality

Previous soil sampling by Tansitor in the disposal pit area is described in Appendix A No additional sampling in this area was performed by ERM Results of ERMs field screening of split spoon soil samples are shown in Table 1 As indicated only one sample at the zero to 20 foot depth from the ERM-1S boring had a detection using an HNU meter The reading of 20 ppm could be due to the moisture content of the soil or the presence of VOCs Only laboratory or other more accurate analysis could confirm the presence of VOCs Future soil sampling in the disposal pit area should address this issue

In boring ERM-2S all samples between 50 and 44 feet below grade had detections of volatile organics The highest concentrations in this boring were detected between 50 and 12 feet below ground level (up to 700 ppm) At 44 feet below grade a tight clay was encountered and no volatiles were detected below this point The spoon collected above the clay layer at 40 to 42 feet below grade had a concentration of 50 ppm which is

14

Table 1

Results of Field Screening of Split Spoon Sediments

(ppm)

24 HOUR 24 HOUR

WELL NO DEPTH ON SITE HEADSPACE WELL NO DEPTH ON SITE HEADSPACE

1S 0-2 2 4S 0-2 ND ND

5-7 ND ND 5-7 lt1 ND

10-12 ND ND 10-12 ND ND

15-17 ND ND 15-17 ND ND

18-20 ND ND

2S 0-2 ND

5-7 -shy gt100 5D 0-2 ND

10-12 -shy 700 5-7 -- 3

15-17 -shy 85 10-12 -- 1

20-22 -shy 4 15-17 NO ND

25-27 -shy 6 20-22 ND ND

30-32 -shy 10 25-27 NO ND

325-34 -shy 65 30-32 80 ND

39-40 -shy 30 35-37 ND NO

40-42 -shy 5 40-42 ND ND

45-47 NO ND 45-47 ND NO

50-52 ND ND 50-52 ND NO

55-57 ND ND 55-57 NO ND

60-62 ND

-shy INDICATES THAT NO READING WAS TAKEN

3S 0-2 ND ND

5-7 ND ND ONLY PEAK CONCENTRATIONS ARE LISTED

10-12 ND ND

I | 15-17 I lt1 ND

I | 18-20 I lt1 2

The

significantly below the peak concentrations in the boring This concentration which is far below the solubility limit of the VOCs detected at the site would indicate that a Dense Non-Aqueous Phase Liquid (DNAPL) is not present above the clay layer at this location Based on these readings the well screen for EPxM-2S was set between 70 and 17 feet below grade

ERM-3S had minor detections between 15 and 20 feet below grade of 20 ppm or less ERM-4S had a trace detection at the 50 to 70 foot interval of less than 10 ppm Similarly concentrations of 30 ppm or less were detected between 50 and 12 feet below grade in ERM-5D

The Vermont unofficial unpublished guidelines for soil removal are based on RCPJV landban requirements The general guidance is to multiply the landban concentration by a factor of 20 In the absence of a landban value the MCL multiplied by a factor of 20 should be used For constituents at the site the following guidelines may be applicable

Consituent Remediation Guideline

111-trichloroethane 8200 ppb (landban-based)

trichloroethene 100 ppb (MCL-based)

chloroform 2000 ppb (MCL-based)

11-dichloroethene 140 ppb (MCL-based)

tetrachloroethene 100 ppb ( p r o p o s e d based)

MCL-

11-dichloroethane 1400 ppb (based on VT water quality guideline)

Since these guidelines are chemical-specific laboratory analyses of soil samples are necessary to determine soil remediation levels for the Tansitor site ERM did not submit any soil samples for laboratory analysis during this investigation although prior investigations included soil sampling and analysis in the disposal pit area (Appendix A)

Since a soil excavation or in-situ remediation would not normally extend below the water table the soil removal guidelines do not necessarily apply to samples collected below the water table Saturated contaminated sediments are generally addressed through a ground water remedial action

16 TtK

34 Hydroqeology and Water Quality

In order to assess potential impacts of the Tansitor disposal pit site EKM investigated ground and surface water conditions on and directly downgradient of the site As ground and surface water are interactive an analysis of both systems is necessary to assess potential migration of chemicals

For comparative purposes the Maximum Contaminant Levels (MCLs) used for defining drinking water quality are listed below for those chemicals present at the site

Parameter MCL (ppb)

11-dichloroethane 70 (VT guideline not an MCL) 11-dichloroethene 7 111-trichloroethane 200 trichloroethene 5 tetrachloroethene 5 (proposed MCL) chloroform 100 (total trihalomethanes)

341 Historical Water Quality

An extensive sampling history exists at the site since 1983 Although limited ground water sampling occurred primarily in nearby water supply wells a large volume of surface water quality data exists Unfortunately the surface water sampling locations were never standardized by staking locations in the field Therefore it is difficult to generate trends over time at specific locations The surface water sampling points should be considered approximate locations Appendix B contains a summary of all water samples collected at and near the Tansitor site

In terms of ground water quality results there has never been a detection of volatile organics in any of the residential water supply wells adjacent to the Tansitor site Only one sampling event (January 20 1984) indicated the possible presence of volatiles in the Tansitor tap water Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only detected once it is likely that this detection was a false positive or indicative of laboratory contamination Follow-up sampling to this investigation will address residential well water quality

17 The

Group

342 Surface Water Quality

Surface water quality results from the January 3 1989 event are summarized in Table 2 and historical data appear in Appendix B Sampling locations are shown on Figure 2 As indicated

sample S-3 is located northeast of the firepond

- sample S-7 is located at an outfall of a pipeline originating at the firepond before entering the perennial stream

samples S-ll and S-13 represent upgradient and downgradient locations respectively on the perennial stream south of Route 9 and

- sample S-16 is located at an upgradient point on the intermittent stream north of the facility

Sample S-3 had no detections of VOCs This result is different from past sampling events (Appendix B) where S-3 was the most contaminated of any of the surface water locations After discussions with VTDEC personnel it appears that the location of S-3 has varied in the past Therefore no accurate trends can be determined at this time

VOC concentrations were non-detectable in S-ll S-7 had a total of 142 ppb and S-13 had a total of 24 ppb Based on the location of sampling points it appears that chemicals are entering the stream downgradient of S-ll either from tributary surface water sources or from ground water discharge The Maximum Contaminant Level (MCL) for 11-dichloroethane (11-DCA) has not been defined however the unofficial Vermont drinking water guideline of 70 ppb was not exceeded The MCLs for 11shydichloroethene (11-DCE) and 11 1-trichloroethane (TCA) the other two chemicals detected in S-7 and S-13 were also not exceeded The MCLs are presented here for comparative purposes alone since the stream is not a likely source of drinking water

Sample S-16 collected from the on-site intermittent stream had a concentration of 16615 ppb of total volatiles which exceeds drinking water standards for all constituents detected This concentration may be due to ground water discharge from the slope north of the firepond some of which drains west into the intermittent stream The presence of tetrachloroethene (PCE) at 20 ppb which was not detected anywhere else at the site warrants further investigation in this area

18 The

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343 Ground Water Flow and Direction

Figure 4 shows a water table map across the site Table 3 summarizes the water level data Ground water flow is locally towards the southeast at the site at a gradient of approximately 0065 ftft

Flow Rates

Using the natural range of values below and the modified Darcy equation the average linear velocity for the ground water in the overburden above the clay at the site is probably between 67 ftyr and 0027 ftyr

hydraulic conductivity 10~4 to 10~7 cmsec of till (K) (after Freeze amp Cherry

1979)

hydraulic gradient (i) 0065 ftft (calculated between

ERM-1S and -5S)

effective porosity (n) 10 to 25

v = (Ki)n

Although permeability (K) data were not obtained during this initial investigation a likely value of permeability is 10~4

cmsec with an effective porosity of 20 which would result in an average linear velocity of 34 ftyr for the upper till zone Field permeability testing is warranted to refine this estimate The more compact lower till likely has a lower permeability which would result in a lower average linear velocity which could restrict contaminant transport

In terms of a sensitivity analysis for the above equation velocity and effective porosity are inversely proportional Therefore a larger effective porosity would result in a slower average linear velocity A higher permeability would result in a higher velocity Applying these velocity estimates to contaminant transport must take into account dispersion and retardation effects

Vertical Gradients

At the time that ERM measured the water levels in the monitoring wells water in ERM-5D was frozen in the casing above ground level This is due to a high water level The depth to ice can not be directly correlated to depth to water in this well because of expansion effects however the difference is not

20

tennis courts

S-l 1 1 ntsrml ttsrjlt stream

perannial stream

_EGEND

Surfccs Water Samp1e

fanitor(ng Wei 1

Water Table Elevatlor ~t above MSL)

Water Taole Contours

D1rect1 on of G^ourcwator F 1 ov

SCALE (feet)

bull00 280 300 400

N

ERM i gare 4 New Engona ~c

Tensi tor E i e c ^ r c n i c s Inc

Genera i zed

vater Tao le E eva t ion Map

for Jani^arj 3 1989

WELL

ERM IS

ERM 2S

ERM 3S

ERM 4S

ERM 5S

ERM 5D

Table 3

WATER GAUGING AND SURVEY DATA

MP ELEVATION

ft above MSL

86029

84387

82262

81995

82238

82237

DEPTH TO

WATER

ft below MP

9 10

3 46

160

348

9 00

100

TOTAL DEPTH

ft below MP

1345

1980

1620

17 75

WATER TABLE ELEVATION

ft above MSL

851 19

84041

82102

81647

813 38

82137

All measurements made on January 3 1989 by ERM

Frozen plug prevented measurement Depth to ice

The

Group

likely to exceed a couple of inches The difference in the depth to ice in ERM-5D and the depth to water in ERM-5S is about eight feet This represents a strong upward vertical gradient especially since ERM-5S is screened between 6 and 16 feet below grade and EKM-5D is screened between 27 and 32 feet below grade

Although ERM-5S and -5D are screened in similar strata based on sediment texture the blow counts increased considerably beyond 15 feet below grade indicating a tighter zone as described earlier The increased compaction with depth and the upward vertical gradient would tend to hinder the downward migration of dissolved contaminants in this area Dissolved contaminant flow is probably concentrated in the upper till layer due to these combined factors

Because of the difference in density between water and organic solvents a vertical gradient alone would not prohibit the downward migration of a DNAPL As discussed earlier however there is currently no evidence to indicate the presence of a DNAPL

344 Ground Water Quality

Organics

Table 4 is a summary of volatile organic concentrations in ground water (as determined by the VTDEC laboratory) from the on-site monitoring wells installed by ERM Figure 5 shows the generalized TCA plume at the site Five solvent-related compounds from the EPA Method 624 suite of parameters were identified in the overburden at the site Well ERM-5D was frozen above ground at the time of sampling and therefore no data is available

Of the six compounds detected at the site several are likely breakdown products of the more prevalent contaminants TCA is known to break down abiotically to 11-DCE and through biodegradation to 11-DCA The kinetics of the reactions favor the formation of 11-DCA It is likely that the remaining constituents trichloroethene (TCE) tetrachloroethene (PCE) and chloroform are virgin chemicals

The upgradient and downgradient wells EPJM-1S and -5S both had non-detectable readings of volatile organic chemicals This would indicate that no additional sources of ground water contamination exist upgradient of the disposal pit Although the non-detectable reading in ERM-5S indicates that considerable attenuation of contaminants has occurred between the disposal pit and beyond the fire pond it does not necessarily demonstrate that ERM-5S is the furthest downgradient advance of contaminants in ground water It is possible that the leading edge of contamshy

23 Thlaquo

Group

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perennial strsam

Surface Wcw2r~ Sample

N 100

Mom tor irg We I

TCA (ODD) D or nondetsctacia

t Cancentnac

ERM F -e o Sea 1e ( Fee t )

New Erg lard 1nc

00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

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ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

- pressing of tantalum powder into pellets (anodes or cathodes)

- sintering in vacuum furnaces and anodizing the pellets using highly diluted solutions of nitric sulfuric and phosphoric acids and glycol

assembling the anodes and cathodes in tantalum silver or aluminum cases and

Completion of these assemblies using various welding technigues and custom built machinery

The electronic capacitors manufactured by Tansitor consist mainly of silver tantalum and palladium metals The process wastes generated from the manufacturing of these capacitors include metal plating solutions cleaning solvents degreasers and dilute acidcaustic solutions

The EPA has estimated that between 50 and 150 gallons per year of these wastes were disposed in an unlined disposal pit north of the facility between sometime after 1956 and late 1978 or early 1979 However chlorinated organic solvents primarily 111-trichloroethane were not used or disposed at the site until the mid-1970s

Ground water seeps discharge from the base of the slope south (downgradient) of the disposal pit Historical sampling in this area has shown elevated readings of VOCs The firepond at the base of the slope receives ground water discharge and has likewise been determined to contain elevated levels of VOCs The primary VOCs detected at the site to date have been 111-shytrichloroethane (TCA) and related chlorinated solvents

A detailed site history based on ERMs interviews and records review is presented in Appendix A

20 Methodology

The methodology used was in conformance to ASTM and EPA guidance documents ERM installed six monitoring wells and collected ground and surface water and soil samples during the winter of 198889 Field screening for VOCs was conducted on the split spoon soil samples from the soil borings No soil samples were delivered to a laboratory for analysis

ERM delivered water samples collected on January 3 1989 to Eastern Analytical Laboratories Inc of North Billerica Massachusetts for analysis (the resulting data were later shown to be invalid and thus were not used) VTDEC personnel delivered split water samples to the VTDEC laboratory for analysis The split VTDEC data are discussed exclusively in this report

Water samples were taken from two sources

ground water samples from the five shallow monitoring wells and

surface water samples from five historical sampling points

21 Monitoring Well Installations

211 Locations

Six wells were installed in five locations on the Tansitor Property (Figure 2) Well numbers followed by an S indicate a shallow overburden well with total depth less than 20 feet and well numbers followed by a D indicate deep overburden wells completed above the glacio-lacustrine clay layer

Well Location Purpose

ERM-1S About 75 north of Intended to be for background the disposal pit concentrations

ERM-2S About 150 south- Assess localized contaminant southwest of the transport and vertical disposal site distribution in the soil

ERM-3S Downgradient of pit Evaluate potential flow around at northeast corner the eastern side of the fire of the fire pond pond

The

ERM-4S About 400 south ofERM-2S at the northwest

Evaluate potential flow around the western side of the fire

corner of the fire pond pond

EKM-5S Southeast side offire pond

To assess shallow transport beyond the fire pond and

vertical flow

ERM-5D Southeast side of To assess deep transport fire pond underneath the fire pond

and vertical flow

212 Drilling Methodology

ERM subcontracted with CATOH Environmental Companies Inc of Albany NY for drilling services Several different drilling methods were used depending upon the soil type and total well depth Precautions were taken to assure that no cross contamination between aquifers occurred during drilling A Mobile B-61 Drill Rig capable of both rotary and hollow stem auger drilling was used Appendix C includes detailed drilling logs graphic logs and well construction diagrams

Well ERM-1S was drilled to a depth of 17 feet and wells ERM-3S 4S and 5S were drilled to 18 feet deep using 425 inch ID hollow stem augers

Well ERM-2S was begun using 625 inch inner diameter (ID) hollow stem augers (HSA) An increase in soil compaction required a change to rotary drilling at a depth of 34 feet Air rotary with a nominal six inch diameter tricone bit was used from 34 to 39 feet below ground surface Sand began to clog the bit at a depth of 39 feet Nominal four inch diameter steel casing was driven to 39 feet and the drilling method was changed to wash rotary with a nominal four inch diameter tricone bit The casing kept the sand from caving into the boring and sealed off the potentially contaminated soils above 39 feet from the deeper soils Wash rotary drilling was continued until the final boring depth 60 feet was achieved This boring was filled up to 19 feet below grade with bentonite to complete the well in the most contaminated zone based on the field screening of split spoon sediments

Monitoring well ERM-5D was drilled with 625 inch ID HSA to a depth of 20 feet An increase in soil density required a change in drilling method to wash rotary using a nominal four inch diameter tricone bit At a depth of 37 feet sand began to fill the boring and nominal four inch diameter steel casing was driven to a depth of 35 feet As with well ERM-2S the casing isolated the surface sediments The final depth of this boring was 57 feet however the boring was backfilled with bentonite up to 34 feet below grade above which the well was completed

213 Soil Sampling and Analysis

ERM performed standard split spoon sampling in accordance with ASTM standards (at intervals of five feet) in all soil borings during drilling An ERM hydrogeologist logged all samples describing all lithologic variations Samples were then stored in glass jars covered with aluminum foil capped and labelled Name of sample date time depth and blowcounts are labelled on each jar

ERM screened soil samples via headspace analysis using a portable field detector for organic vapors Either a photoionization detector (HNU PI-101) or a flame ionization detector (Foxboro Instruments OVA Model 128) was used In most cases organic vapors were measured both when the split spoon was opened and 24 hours later The 24 hour measurement is taken from the headspace by puncturing the aluminum foil in the sample jar after the sample is allowed to equilibrate at room temperature No soil samples were delivered to a laboratory for analysis

214 Well Construction

Following completion of the borings to total depth a one to two foot thick sandpack was added as a foundation for the well casing and to prevent the clogging of the screen with fine material from the formation In ERM-2S and -5D bentonite was used to fill in the borings from 60 to 19 feet below grade and 57 to 34 feet below grade respectively prior to the addition of the sandpack This was done so that the well screens could be set in the zone of highest contamination based on field screening

Two-inch diameter 0020 inch slot 304 stainless steel screen and riser were used for well construction Five feet of slotted screen was used in ERM-5D Ten feet of slotted screen was used in each of the shallow overburden wells Stainless steel centralizers were used in all wells to ensure that the screen was vertical and that the well was located in the center of the boring

The sandpack was deposited around the screened interval and extended approximately two feet above the top of the screen A bentonite pellet layer was then deposited above the sandpack to form a two-to-five foot seal A bentonite-cement grout was used to seal the remainder of the boring The top three to five feet of the boring consisted of Portland cement to provide a strong foundation for a protective steel casing The stainless steel risers protrude approximately two feet above the ground surface The protective casings are secured with locking caps

CATOH Environmental developed the wells following completion by pumping water from the well until the water became clear

22 Surveying Gauging and Collecting Water Samples

ERM subcontracted Gerald E Morrissey Inc of Bennington Vermont to survey all monitoring well locations at the site to a US Coast amp Geodetic Survey datum Elevations at the ground surface the top of the outer well casing and the top inner stainless steel pipe casing were measured

Prior to any ground water sampling an ERM hydrogeologist measured static water levels to the nearest one-hundredth of a foot The water in ERM-5D was frozen but a measurement was taken to the top of the ice Total depth was measured in all wells but ERM-5D and -3S A plug of ice prohibited measurement of total depth in ERM-3S

An ERM hydrogeologist evacuated at least three well volumes of water from the wells using dedicated bottom filling PVC bailers VTDEC personnel then collected samples for analysis of volatile organics by EPA Method 601602 In addition the Vermont DEC collected samples for analysis of priority pollutant metals

Surface water samples were collected by submersing vials and jars in the streams as designated on Figure 2 Analysis of surface water samples was identical to that of ground water samples

ERM collected samples which were delivered to Eastern Analytical Laboratories Inc (EAL) of North Billerica Massachusetts Because of maintenance being performed on EALs GCMS the samples were delivered to Toxicon Laboratories of Woburn Massachusetts The resulting data were determined by ERM to be invalid due to poor intralab chain-of-custody protocols at Toxicon and inconsistencies in laboratory procedures by Toxicon personnel

30 RESULTS AND DISCUSSION

3 1 Physiography and Regional Geology

The Tansitor site is in the southwestern corner of Vermont (Figure 1) in the Taconic Range This area is in the Hudson River basin The site is at the southern base of Whipstock Hill approximately 35 miles west of the center of Bennington Vermont An unnamed hill lies directly south across the valley

The geology of the vicinity is characterized by an overburden of glacial materials underlain by Walloomsic Slate No bedrock outcrops were observed on site The valley in which Tansitor is located was part of a glacial lake when recessional moraines blocked the valley drainage to the west A glacioshylacustrine clay deposit formed in the lake bottom and was later covered with till The extent of this clay is not well-documented in the literature

It is unclear whether this clay layer is continuous across the valley and whether it would act as an effective barrier to downward migration of contaminants into the bedrock ag_uifer The EPAs Site Inspection report states that the depth to bedrock (slate) at the Severs1 property 600 feet west of the site is 80 feet which if correct would indicate the absence of an effective clay layer at that location However if the wetlands or stream south of Route 9 represent a ground water discharge zone the presence of a limited on-site clay layer could prevent migration of contaminants into the bedrock These issues will be resolved in future investigations

The topographic slope is to the southeast An unnamed perennial stream is located across Route 9 from the site and flows towards the southwest for about 05 miles before entering Browns Brook which flows west about four miles before entering the Hoosic River An intermittent stream begins near the northeastern corner of the main building and joins the perennial stream in the wetland south of the site

3 2 Site Geology

The overburden at the Tansitor site consists of glacial tills and glacio-lacustrine clays Figure 3a shows the location of an on-site cross-section Figure 3b is a generalized cross-section for the site The till matrix is primarily mixed clays and silts with up to 40 percent sand and gravel In general till compaction increases with depth and with an increase in clay content The exact thickness of the overburden is unknown Sorption of contaminants onto the overburden sediments is likely enhanced by the high clay content of the till which could retard the movement of the contaminants

11 The

o o o o o o CO CO rr CJ o CO CO CO CO 00 CO

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A compact orange silty clay of glacio-lacustrine origin was found in both ERM-2S and ERM-5D at respective depths of 44 and 50 feet below grade (798 and 770 feet above Mean Sea Level) The thickness of this layer is a minimum of seven feet at ERM-5D and a minimum of 18 feet at ERM-2S (both borings were halted before the clays were completely penetrated) The other shallow wells were not advanced deep enough to intercept the clay layer

Within the till layer in ERM-2S and -5D a significant increase in the number of blow counts occurred at 10 and 15 feet respectively This reflects an increase in sediment compaction at these depths Since the sediment texture is the same above and below these intervals it is likely that the upper layer represents disturbed sediments possibly a collapse or slump structure

A lens of gray clay was found between 10 and 12 feet below ground level in ERM-4S The degree to which this may act as an impermeable barrier depends in part on the lateral extent of the clay lens

Both ERM-4S and -5D have seams of fine sand bedded with the silty clays At ERM-2S a three foot diameter boulder was intersected

Bedrock was not encountered in any of the borings Contrary to prior reports bedrock does not appear to outcrop in the immediate vicinity of the disposal pit The only bedrock outcrops observed were on the northern side of Whipstock Hill far upgradient of the site

3 3 Soil Quality

Previous soil sampling by Tansitor in the disposal pit area is described in Appendix A No additional sampling in this area was performed by ERM Results of ERMs field screening of split spoon soil samples are shown in Table 1 As indicated only one sample at the zero to 20 foot depth from the ERM-1S boring had a detection using an HNU meter The reading of 20 ppm could be due to the moisture content of the soil or the presence of VOCs Only laboratory or other more accurate analysis could confirm the presence of VOCs Future soil sampling in the disposal pit area should address this issue

In boring ERM-2S all samples between 50 and 44 feet below grade had detections of volatile organics The highest concentrations in this boring were detected between 50 and 12 feet below ground level (up to 700 ppm) At 44 feet below grade a tight clay was encountered and no volatiles were detected below this point The spoon collected above the clay layer at 40 to 42 feet below grade had a concentration of 50 ppm which is

14

Table 1

Results of Field Screening of Split Spoon Sediments

(ppm)

24 HOUR 24 HOUR

WELL NO DEPTH ON SITE HEADSPACE WELL NO DEPTH ON SITE HEADSPACE

1S 0-2 2 4S 0-2 ND ND

5-7 ND ND 5-7 lt1 ND

10-12 ND ND 10-12 ND ND

15-17 ND ND 15-17 ND ND

18-20 ND ND

2S 0-2 ND

5-7 -shy gt100 5D 0-2 ND

10-12 -shy 700 5-7 -- 3

15-17 -shy 85 10-12 -- 1

20-22 -shy 4 15-17 NO ND

25-27 -shy 6 20-22 ND ND

30-32 -shy 10 25-27 NO ND

325-34 -shy 65 30-32 80 ND

39-40 -shy 30 35-37 ND NO

40-42 -shy 5 40-42 ND ND

45-47 NO ND 45-47 ND NO

50-52 ND ND 50-52 ND NO

55-57 ND ND 55-57 NO ND

60-62 ND

-shy INDICATES THAT NO READING WAS TAKEN

3S 0-2 ND ND

5-7 ND ND ONLY PEAK CONCENTRATIONS ARE LISTED

10-12 ND ND

I | 15-17 I lt1 ND

I | 18-20 I lt1 2

The

significantly below the peak concentrations in the boring This concentration which is far below the solubility limit of the VOCs detected at the site would indicate that a Dense Non-Aqueous Phase Liquid (DNAPL) is not present above the clay layer at this location Based on these readings the well screen for EPxM-2S was set between 70 and 17 feet below grade

ERM-3S had minor detections between 15 and 20 feet below grade of 20 ppm or less ERM-4S had a trace detection at the 50 to 70 foot interval of less than 10 ppm Similarly concentrations of 30 ppm or less were detected between 50 and 12 feet below grade in ERM-5D

The Vermont unofficial unpublished guidelines for soil removal are based on RCPJV landban requirements The general guidance is to multiply the landban concentration by a factor of 20 In the absence of a landban value the MCL multiplied by a factor of 20 should be used For constituents at the site the following guidelines may be applicable

Consituent Remediation Guideline

111-trichloroethane 8200 ppb (landban-based)

trichloroethene 100 ppb (MCL-based)

chloroform 2000 ppb (MCL-based)

11-dichloroethene 140 ppb (MCL-based)

tetrachloroethene 100 ppb ( p r o p o s e d based)

MCL-

11-dichloroethane 1400 ppb (based on VT water quality guideline)

Since these guidelines are chemical-specific laboratory analyses of soil samples are necessary to determine soil remediation levels for the Tansitor site ERM did not submit any soil samples for laboratory analysis during this investigation although prior investigations included soil sampling and analysis in the disposal pit area (Appendix A)

Since a soil excavation or in-situ remediation would not normally extend below the water table the soil removal guidelines do not necessarily apply to samples collected below the water table Saturated contaminated sediments are generally addressed through a ground water remedial action

16 TtK

34 Hydroqeology and Water Quality

In order to assess potential impacts of the Tansitor disposal pit site EKM investigated ground and surface water conditions on and directly downgradient of the site As ground and surface water are interactive an analysis of both systems is necessary to assess potential migration of chemicals

For comparative purposes the Maximum Contaminant Levels (MCLs) used for defining drinking water quality are listed below for those chemicals present at the site

Parameter MCL (ppb)

11-dichloroethane 70 (VT guideline not an MCL) 11-dichloroethene 7 111-trichloroethane 200 trichloroethene 5 tetrachloroethene 5 (proposed MCL) chloroform 100 (total trihalomethanes)

341 Historical Water Quality

An extensive sampling history exists at the site since 1983 Although limited ground water sampling occurred primarily in nearby water supply wells a large volume of surface water quality data exists Unfortunately the surface water sampling locations were never standardized by staking locations in the field Therefore it is difficult to generate trends over time at specific locations The surface water sampling points should be considered approximate locations Appendix B contains a summary of all water samples collected at and near the Tansitor site

In terms of ground water quality results there has never been a detection of volatile organics in any of the residential water supply wells adjacent to the Tansitor site Only one sampling event (January 20 1984) indicated the possible presence of volatiles in the Tansitor tap water Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only detected once it is likely that this detection was a false positive or indicative of laboratory contamination Follow-up sampling to this investigation will address residential well water quality

17 The

Group

342 Surface Water Quality

Surface water quality results from the January 3 1989 event are summarized in Table 2 and historical data appear in Appendix B Sampling locations are shown on Figure 2 As indicated

sample S-3 is located northeast of the firepond

- sample S-7 is located at an outfall of a pipeline originating at the firepond before entering the perennial stream

samples S-ll and S-13 represent upgradient and downgradient locations respectively on the perennial stream south of Route 9 and

- sample S-16 is located at an upgradient point on the intermittent stream north of the facility

Sample S-3 had no detections of VOCs This result is different from past sampling events (Appendix B) where S-3 was the most contaminated of any of the surface water locations After discussions with VTDEC personnel it appears that the location of S-3 has varied in the past Therefore no accurate trends can be determined at this time

VOC concentrations were non-detectable in S-ll S-7 had a total of 142 ppb and S-13 had a total of 24 ppb Based on the location of sampling points it appears that chemicals are entering the stream downgradient of S-ll either from tributary surface water sources or from ground water discharge The Maximum Contaminant Level (MCL) for 11-dichloroethane (11-DCA) has not been defined however the unofficial Vermont drinking water guideline of 70 ppb was not exceeded The MCLs for 11shydichloroethene (11-DCE) and 11 1-trichloroethane (TCA) the other two chemicals detected in S-7 and S-13 were also not exceeded The MCLs are presented here for comparative purposes alone since the stream is not a likely source of drinking water

Sample S-16 collected from the on-site intermittent stream had a concentration of 16615 ppb of total volatiles which exceeds drinking water standards for all constituents detected This concentration may be due to ground water discharge from the slope north of the firepond some of which drains west into the intermittent stream The presence of tetrachloroethene (PCE) at 20 ppb which was not detected anywhere else at the site warrants further investigation in this area

18 The

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343 Ground Water Flow and Direction

Figure 4 shows a water table map across the site Table 3 summarizes the water level data Ground water flow is locally towards the southeast at the site at a gradient of approximately 0065 ftft

Flow Rates

Using the natural range of values below and the modified Darcy equation the average linear velocity for the ground water in the overburden above the clay at the site is probably between 67 ftyr and 0027 ftyr

hydraulic conductivity 10~4 to 10~7 cmsec of till (K) (after Freeze amp Cherry

1979)

hydraulic gradient (i) 0065 ftft (calculated between

ERM-1S and -5S)

effective porosity (n) 10 to 25

v = (Ki)n

Although permeability (K) data were not obtained during this initial investigation a likely value of permeability is 10~4

cmsec with an effective porosity of 20 which would result in an average linear velocity of 34 ftyr for the upper till zone Field permeability testing is warranted to refine this estimate The more compact lower till likely has a lower permeability which would result in a lower average linear velocity which could restrict contaminant transport

In terms of a sensitivity analysis for the above equation velocity and effective porosity are inversely proportional Therefore a larger effective porosity would result in a slower average linear velocity A higher permeability would result in a higher velocity Applying these velocity estimates to contaminant transport must take into account dispersion and retardation effects

Vertical Gradients

At the time that ERM measured the water levels in the monitoring wells water in ERM-5D was frozen in the casing above ground level This is due to a high water level The depth to ice can not be directly correlated to depth to water in this well because of expansion effects however the difference is not

20

tennis courts

S-l 1 1 ntsrml ttsrjlt stream

perannial stream

_EGEND

Surfccs Water Samp1e

fanitor(ng Wei 1

Water Table Elevatlor ~t above MSL)

Water Taole Contours

D1rect1 on of G^ourcwator F 1 ov

SCALE (feet)

bull00 280 300 400

N

ERM i gare 4 New Engona ~c

Tensi tor E i e c ^ r c n i c s Inc

Genera i zed

vater Tao le E eva t ion Map

for Jani^arj 3 1989

WELL

ERM IS

ERM 2S

ERM 3S

ERM 4S

ERM 5S

ERM 5D

Table 3

WATER GAUGING AND SURVEY DATA

MP ELEVATION

ft above MSL

86029

84387

82262

81995

82238

82237

DEPTH TO

WATER

ft below MP

9 10

3 46

160

348

9 00

100

TOTAL DEPTH

ft below MP

1345

1980

1620

17 75

WATER TABLE ELEVATION

ft above MSL

851 19

84041

82102

81647

813 38

82137

All measurements made on January 3 1989 by ERM

Frozen plug prevented measurement Depth to ice

The

Group

likely to exceed a couple of inches The difference in the depth to ice in ERM-5D and the depth to water in ERM-5S is about eight feet This represents a strong upward vertical gradient especially since ERM-5S is screened between 6 and 16 feet below grade and EKM-5D is screened between 27 and 32 feet below grade

Although ERM-5S and -5D are screened in similar strata based on sediment texture the blow counts increased considerably beyond 15 feet below grade indicating a tighter zone as described earlier The increased compaction with depth and the upward vertical gradient would tend to hinder the downward migration of dissolved contaminants in this area Dissolved contaminant flow is probably concentrated in the upper till layer due to these combined factors

Because of the difference in density between water and organic solvents a vertical gradient alone would not prohibit the downward migration of a DNAPL As discussed earlier however there is currently no evidence to indicate the presence of a DNAPL

344 Ground Water Quality

Organics

Table 4 is a summary of volatile organic concentrations in ground water (as determined by the VTDEC laboratory) from the on-site monitoring wells installed by ERM Figure 5 shows the generalized TCA plume at the site Five solvent-related compounds from the EPA Method 624 suite of parameters were identified in the overburden at the site Well ERM-5D was frozen above ground at the time of sampling and therefore no data is available

Of the six compounds detected at the site several are likely breakdown products of the more prevalent contaminants TCA is known to break down abiotically to 11-DCE and through biodegradation to 11-DCA The kinetics of the reactions favor the formation of 11-DCA It is likely that the remaining constituents trichloroethene (TCE) tetrachloroethene (PCE) and chloroform are virgin chemicals

The upgradient and downgradient wells EPJM-1S and -5S both had non-detectable readings of volatile organic chemicals This would indicate that no additional sources of ground water contamination exist upgradient of the disposal pit Although the non-detectable reading in ERM-5S indicates that considerable attenuation of contaminants has occurred between the disposal pit and beyond the fire pond it does not necessarily demonstrate that ERM-5S is the furthest downgradient advance of contaminants in ground water It is possible that the leading edge of contamshy

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2 en 03 W rH 0) 3 u rd C C 2 (d

o O I] (U a) x -H O c C 4-1 C rd rd CO 0) o U 0) X x o cu 0) SH a 4-J 4-1 lH C 4-gt ^ 4-) 0) Q) O Q) U O O TJ O o rH x 0) 4-1

QJ ^ gtH X 4-1 CO bullH g O o o cu

W O 4-1 gtH rH rH -H O O O -H Q -H ox XI rH r-l O o 2 4-gt HH O U EH O gt Ul

O P C O -H bullH 1 rH V) bull- 4-1 0 Q) U Q Q H x j OJ CO -H EH a 73 O 1 1 ~ O lt rH gt1

Z -H rH (H cH rH -H EH CL rH 3 o c x - -bull - SH O g rt3

o o P O ltH rH (H EH EH tlaquo C gt CO lt

Ths

wate 1 i no

1 ntsrm 1 tts stream

perennial strsam

Surface Wcw2r~ Sample

N 100

Mom tor irg We I

TCA (ODD) D or nondetsctacia

t Cancentnac

ERM F -e o Sea 1e ( Fee t )

New Erg lard 1nc

00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

20 Methodology

The methodology used was in conformance to ASTM and EPA guidance documents ERM installed six monitoring wells and collected ground and surface water and soil samples during the winter of 198889 Field screening for VOCs was conducted on the split spoon soil samples from the soil borings No soil samples were delivered to a laboratory for analysis

ERM delivered water samples collected on January 3 1989 to Eastern Analytical Laboratories Inc of North Billerica Massachusetts for analysis (the resulting data were later shown to be invalid and thus were not used) VTDEC personnel delivered split water samples to the VTDEC laboratory for analysis The split VTDEC data are discussed exclusively in this report

Water samples were taken from two sources

ground water samples from the five shallow monitoring wells and

surface water samples from five historical sampling points

21 Monitoring Well Installations

211 Locations

Six wells were installed in five locations on the Tansitor Property (Figure 2) Well numbers followed by an S indicate a shallow overburden well with total depth less than 20 feet and well numbers followed by a D indicate deep overburden wells completed above the glacio-lacustrine clay layer

Well Location Purpose

ERM-1S About 75 north of Intended to be for background the disposal pit concentrations

ERM-2S About 150 south- Assess localized contaminant southwest of the transport and vertical disposal site distribution in the soil

ERM-3S Downgradient of pit Evaluate potential flow around at northeast corner the eastern side of the fire of the fire pond pond

The

ERM-4S About 400 south ofERM-2S at the northwest

Evaluate potential flow around the western side of the fire

corner of the fire pond pond

EKM-5S Southeast side offire pond

To assess shallow transport beyond the fire pond and

vertical flow

ERM-5D Southeast side of To assess deep transport fire pond underneath the fire pond

and vertical flow

212 Drilling Methodology

ERM subcontracted with CATOH Environmental Companies Inc of Albany NY for drilling services Several different drilling methods were used depending upon the soil type and total well depth Precautions were taken to assure that no cross contamination between aquifers occurred during drilling A Mobile B-61 Drill Rig capable of both rotary and hollow stem auger drilling was used Appendix C includes detailed drilling logs graphic logs and well construction diagrams

Well ERM-1S was drilled to a depth of 17 feet and wells ERM-3S 4S and 5S were drilled to 18 feet deep using 425 inch ID hollow stem augers

Well ERM-2S was begun using 625 inch inner diameter (ID) hollow stem augers (HSA) An increase in soil compaction required a change to rotary drilling at a depth of 34 feet Air rotary with a nominal six inch diameter tricone bit was used from 34 to 39 feet below ground surface Sand began to clog the bit at a depth of 39 feet Nominal four inch diameter steel casing was driven to 39 feet and the drilling method was changed to wash rotary with a nominal four inch diameter tricone bit The casing kept the sand from caving into the boring and sealed off the potentially contaminated soils above 39 feet from the deeper soils Wash rotary drilling was continued until the final boring depth 60 feet was achieved This boring was filled up to 19 feet below grade with bentonite to complete the well in the most contaminated zone based on the field screening of split spoon sediments

Monitoring well ERM-5D was drilled with 625 inch ID HSA to a depth of 20 feet An increase in soil density required a change in drilling method to wash rotary using a nominal four inch diameter tricone bit At a depth of 37 feet sand began to fill the boring and nominal four inch diameter steel casing was driven to a depth of 35 feet As with well ERM-2S the casing isolated the surface sediments The final depth of this boring was 57 feet however the boring was backfilled with bentonite up to 34 feet below grade above which the well was completed

213 Soil Sampling and Analysis

ERM performed standard split spoon sampling in accordance with ASTM standards (at intervals of five feet) in all soil borings during drilling An ERM hydrogeologist logged all samples describing all lithologic variations Samples were then stored in glass jars covered with aluminum foil capped and labelled Name of sample date time depth and blowcounts are labelled on each jar

ERM screened soil samples via headspace analysis using a portable field detector for organic vapors Either a photoionization detector (HNU PI-101) or a flame ionization detector (Foxboro Instruments OVA Model 128) was used In most cases organic vapors were measured both when the split spoon was opened and 24 hours later The 24 hour measurement is taken from the headspace by puncturing the aluminum foil in the sample jar after the sample is allowed to equilibrate at room temperature No soil samples were delivered to a laboratory for analysis

214 Well Construction

Following completion of the borings to total depth a one to two foot thick sandpack was added as a foundation for the well casing and to prevent the clogging of the screen with fine material from the formation In ERM-2S and -5D bentonite was used to fill in the borings from 60 to 19 feet below grade and 57 to 34 feet below grade respectively prior to the addition of the sandpack This was done so that the well screens could be set in the zone of highest contamination based on field screening

Two-inch diameter 0020 inch slot 304 stainless steel screen and riser were used for well construction Five feet of slotted screen was used in ERM-5D Ten feet of slotted screen was used in each of the shallow overburden wells Stainless steel centralizers were used in all wells to ensure that the screen was vertical and that the well was located in the center of the boring

The sandpack was deposited around the screened interval and extended approximately two feet above the top of the screen A bentonite pellet layer was then deposited above the sandpack to form a two-to-five foot seal A bentonite-cement grout was used to seal the remainder of the boring The top three to five feet of the boring consisted of Portland cement to provide a strong foundation for a protective steel casing The stainless steel risers protrude approximately two feet above the ground surface The protective casings are secured with locking caps

CATOH Environmental developed the wells following completion by pumping water from the well until the water became clear

22 Surveying Gauging and Collecting Water Samples

ERM subcontracted Gerald E Morrissey Inc of Bennington Vermont to survey all monitoring well locations at the site to a US Coast amp Geodetic Survey datum Elevations at the ground surface the top of the outer well casing and the top inner stainless steel pipe casing were measured

Prior to any ground water sampling an ERM hydrogeologist measured static water levels to the nearest one-hundredth of a foot The water in ERM-5D was frozen but a measurement was taken to the top of the ice Total depth was measured in all wells but ERM-5D and -3S A plug of ice prohibited measurement of total depth in ERM-3S

An ERM hydrogeologist evacuated at least three well volumes of water from the wells using dedicated bottom filling PVC bailers VTDEC personnel then collected samples for analysis of volatile organics by EPA Method 601602 In addition the Vermont DEC collected samples for analysis of priority pollutant metals

Surface water samples were collected by submersing vials and jars in the streams as designated on Figure 2 Analysis of surface water samples was identical to that of ground water samples

ERM collected samples which were delivered to Eastern Analytical Laboratories Inc (EAL) of North Billerica Massachusetts Because of maintenance being performed on EALs GCMS the samples were delivered to Toxicon Laboratories of Woburn Massachusetts The resulting data were determined by ERM to be invalid due to poor intralab chain-of-custody protocols at Toxicon and inconsistencies in laboratory procedures by Toxicon personnel

30 RESULTS AND DISCUSSION

3 1 Physiography and Regional Geology

The Tansitor site is in the southwestern corner of Vermont (Figure 1) in the Taconic Range This area is in the Hudson River basin The site is at the southern base of Whipstock Hill approximately 35 miles west of the center of Bennington Vermont An unnamed hill lies directly south across the valley

The geology of the vicinity is characterized by an overburden of glacial materials underlain by Walloomsic Slate No bedrock outcrops were observed on site The valley in which Tansitor is located was part of a glacial lake when recessional moraines blocked the valley drainage to the west A glacioshylacustrine clay deposit formed in the lake bottom and was later covered with till The extent of this clay is not well-documented in the literature

It is unclear whether this clay layer is continuous across the valley and whether it would act as an effective barrier to downward migration of contaminants into the bedrock ag_uifer The EPAs Site Inspection report states that the depth to bedrock (slate) at the Severs1 property 600 feet west of the site is 80 feet which if correct would indicate the absence of an effective clay layer at that location However if the wetlands or stream south of Route 9 represent a ground water discharge zone the presence of a limited on-site clay layer could prevent migration of contaminants into the bedrock These issues will be resolved in future investigations

The topographic slope is to the southeast An unnamed perennial stream is located across Route 9 from the site and flows towards the southwest for about 05 miles before entering Browns Brook which flows west about four miles before entering the Hoosic River An intermittent stream begins near the northeastern corner of the main building and joins the perennial stream in the wetland south of the site

3 2 Site Geology

The overburden at the Tansitor site consists of glacial tills and glacio-lacustrine clays Figure 3a shows the location of an on-site cross-section Figure 3b is a generalized cross-section for the site The till matrix is primarily mixed clays and silts with up to 40 percent sand and gravel In general till compaction increases with depth and with an increase in clay content The exact thickness of the overburden is unknown Sorption of contaminants onto the overburden sediments is likely enhanced by the high clay content of the till which could retard the movement of the contaminants

11 The

o o o o o o CO CO rr CJ o CO CO CO CO 00 CO

uea|j

A compact orange silty clay of glacio-lacustrine origin was found in both ERM-2S and ERM-5D at respective depths of 44 and 50 feet below grade (798 and 770 feet above Mean Sea Level) The thickness of this layer is a minimum of seven feet at ERM-5D and a minimum of 18 feet at ERM-2S (both borings were halted before the clays were completely penetrated) The other shallow wells were not advanced deep enough to intercept the clay layer

Within the till layer in ERM-2S and -5D a significant increase in the number of blow counts occurred at 10 and 15 feet respectively This reflects an increase in sediment compaction at these depths Since the sediment texture is the same above and below these intervals it is likely that the upper layer represents disturbed sediments possibly a collapse or slump structure

A lens of gray clay was found between 10 and 12 feet below ground level in ERM-4S The degree to which this may act as an impermeable barrier depends in part on the lateral extent of the clay lens

Both ERM-4S and -5D have seams of fine sand bedded with the silty clays At ERM-2S a three foot diameter boulder was intersected

Bedrock was not encountered in any of the borings Contrary to prior reports bedrock does not appear to outcrop in the immediate vicinity of the disposal pit The only bedrock outcrops observed were on the northern side of Whipstock Hill far upgradient of the site

3 3 Soil Quality

Previous soil sampling by Tansitor in the disposal pit area is described in Appendix A No additional sampling in this area was performed by ERM Results of ERMs field screening of split spoon soil samples are shown in Table 1 As indicated only one sample at the zero to 20 foot depth from the ERM-1S boring had a detection using an HNU meter The reading of 20 ppm could be due to the moisture content of the soil or the presence of VOCs Only laboratory or other more accurate analysis could confirm the presence of VOCs Future soil sampling in the disposal pit area should address this issue

In boring ERM-2S all samples between 50 and 44 feet below grade had detections of volatile organics The highest concentrations in this boring were detected between 50 and 12 feet below ground level (up to 700 ppm) At 44 feet below grade a tight clay was encountered and no volatiles were detected below this point The spoon collected above the clay layer at 40 to 42 feet below grade had a concentration of 50 ppm which is

14

Table 1

Results of Field Screening of Split Spoon Sediments

(ppm)

24 HOUR 24 HOUR

WELL NO DEPTH ON SITE HEADSPACE WELL NO DEPTH ON SITE HEADSPACE

1S 0-2 2 4S 0-2 ND ND

5-7 ND ND 5-7 lt1 ND

10-12 ND ND 10-12 ND ND

15-17 ND ND 15-17 ND ND

18-20 ND ND

2S 0-2 ND

5-7 -shy gt100 5D 0-2 ND

10-12 -shy 700 5-7 -- 3

15-17 -shy 85 10-12 -- 1

20-22 -shy 4 15-17 NO ND

25-27 -shy 6 20-22 ND ND

30-32 -shy 10 25-27 NO ND

325-34 -shy 65 30-32 80 ND

39-40 -shy 30 35-37 ND NO

40-42 -shy 5 40-42 ND ND

45-47 NO ND 45-47 ND NO

50-52 ND ND 50-52 ND NO

55-57 ND ND 55-57 NO ND

60-62 ND

-shy INDICATES THAT NO READING WAS TAKEN

3S 0-2 ND ND

5-7 ND ND ONLY PEAK CONCENTRATIONS ARE LISTED

10-12 ND ND

I | 15-17 I lt1 ND

I | 18-20 I lt1 2

The

significantly below the peak concentrations in the boring This concentration which is far below the solubility limit of the VOCs detected at the site would indicate that a Dense Non-Aqueous Phase Liquid (DNAPL) is not present above the clay layer at this location Based on these readings the well screen for EPxM-2S was set between 70 and 17 feet below grade

ERM-3S had minor detections between 15 and 20 feet below grade of 20 ppm or less ERM-4S had a trace detection at the 50 to 70 foot interval of less than 10 ppm Similarly concentrations of 30 ppm or less were detected between 50 and 12 feet below grade in ERM-5D

The Vermont unofficial unpublished guidelines for soil removal are based on RCPJV landban requirements The general guidance is to multiply the landban concentration by a factor of 20 In the absence of a landban value the MCL multiplied by a factor of 20 should be used For constituents at the site the following guidelines may be applicable

Consituent Remediation Guideline

111-trichloroethane 8200 ppb (landban-based)

trichloroethene 100 ppb (MCL-based)

chloroform 2000 ppb (MCL-based)

11-dichloroethene 140 ppb (MCL-based)

tetrachloroethene 100 ppb ( p r o p o s e d based)

MCL-

11-dichloroethane 1400 ppb (based on VT water quality guideline)

Since these guidelines are chemical-specific laboratory analyses of soil samples are necessary to determine soil remediation levels for the Tansitor site ERM did not submit any soil samples for laboratory analysis during this investigation although prior investigations included soil sampling and analysis in the disposal pit area (Appendix A)

Since a soil excavation or in-situ remediation would not normally extend below the water table the soil removal guidelines do not necessarily apply to samples collected below the water table Saturated contaminated sediments are generally addressed through a ground water remedial action

16 TtK

34 Hydroqeology and Water Quality

In order to assess potential impacts of the Tansitor disposal pit site EKM investigated ground and surface water conditions on and directly downgradient of the site As ground and surface water are interactive an analysis of both systems is necessary to assess potential migration of chemicals

For comparative purposes the Maximum Contaminant Levels (MCLs) used for defining drinking water quality are listed below for those chemicals present at the site

Parameter MCL (ppb)

11-dichloroethane 70 (VT guideline not an MCL) 11-dichloroethene 7 111-trichloroethane 200 trichloroethene 5 tetrachloroethene 5 (proposed MCL) chloroform 100 (total trihalomethanes)

341 Historical Water Quality

An extensive sampling history exists at the site since 1983 Although limited ground water sampling occurred primarily in nearby water supply wells a large volume of surface water quality data exists Unfortunately the surface water sampling locations were never standardized by staking locations in the field Therefore it is difficult to generate trends over time at specific locations The surface water sampling points should be considered approximate locations Appendix B contains a summary of all water samples collected at and near the Tansitor site

In terms of ground water quality results there has never been a detection of volatile organics in any of the residential water supply wells adjacent to the Tansitor site Only one sampling event (January 20 1984) indicated the possible presence of volatiles in the Tansitor tap water Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only detected once it is likely that this detection was a false positive or indicative of laboratory contamination Follow-up sampling to this investigation will address residential well water quality

17 The

Group

342 Surface Water Quality

Surface water quality results from the January 3 1989 event are summarized in Table 2 and historical data appear in Appendix B Sampling locations are shown on Figure 2 As indicated

sample S-3 is located northeast of the firepond

- sample S-7 is located at an outfall of a pipeline originating at the firepond before entering the perennial stream

samples S-ll and S-13 represent upgradient and downgradient locations respectively on the perennial stream south of Route 9 and

- sample S-16 is located at an upgradient point on the intermittent stream north of the facility

Sample S-3 had no detections of VOCs This result is different from past sampling events (Appendix B) where S-3 was the most contaminated of any of the surface water locations After discussions with VTDEC personnel it appears that the location of S-3 has varied in the past Therefore no accurate trends can be determined at this time

VOC concentrations were non-detectable in S-ll S-7 had a total of 142 ppb and S-13 had a total of 24 ppb Based on the location of sampling points it appears that chemicals are entering the stream downgradient of S-ll either from tributary surface water sources or from ground water discharge The Maximum Contaminant Level (MCL) for 11-dichloroethane (11-DCA) has not been defined however the unofficial Vermont drinking water guideline of 70 ppb was not exceeded The MCLs for 11shydichloroethene (11-DCE) and 11 1-trichloroethane (TCA) the other two chemicals detected in S-7 and S-13 were also not exceeded The MCLs are presented here for comparative purposes alone since the stream is not a likely source of drinking water

Sample S-16 collected from the on-site intermittent stream had a concentration of 16615 ppb of total volatiles which exceeds drinking water standards for all constituents detected This concentration may be due to ground water discharge from the slope north of the firepond some of which drains west into the intermittent stream The presence of tetrachloroethene (PCE) at 20 ppb which was not detected anywhere else at the site warrants further investigation in this area

18 The

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343 Ground Water Flow and Direction

Figure 4 shows a water table map across the site Table 3 summarizes the water level data Ground water flow is locally towards the southeast at the site at a gradient of approximately 0065 ftft

Flow Rates

Using the natural range of values below and the modified Darcy equation the average linear velocity for the ground water in the overburden above the clay at the site is probably between 67 ftyr and 0027 ftyr

hydraulic conductivity 10~4 to 10~7 cmsec of till (K) (after Freeze amp Cherry

1979)

hydraulic gradient (i) 0065 ftft (calculated between

ERM-1S and -5S)

effective porosity (n) 10 to 25

v = (Ki)n

Although permeability (K) data were not obtained during this initial investigation a likely value of permeability is 10~4

cmsec with an effective porosity of 20 which would result in an average linear velocity of 34 ftyr for the upper till zone Field permeability testing is warranted to refine this estimate The more compact lower till likely has a lower permeability which would result in a lower average linear velocity which could restrict contaminant transport

In terms of a sensitivity analysis for the above equation velocity and effective porosity are inversely proportional Therefore a larger effective porosity would result in a slower average linear velocity A higher permeability would result in a higher velocity Applying these velocity estimates to contaminant transport must take into account dispersion and retardation effects

Vertical Gradients

At the time that ERM measured the water levels in the monitoring wells water in ERM-5D was frozen in the casing above ground level This is due to a high water level The depth to ice can not be directly correlated to depth to water in this well because of expansion effects however the difference is not

20

tennis courts

S-l 1 1 ntsrml ttsrjlt stream

perannial stream

_EGEND

Surfccs Water Samp1e

fanitor(ng Wei 1

Water Table Elevatlor ~t above MSL)

Water Taole Contours

D1rect1 on of G^ourcwator F 1 ov

SCALE (feet)

bull00 280 300 400

N

ERM i gare 4 New Engona ~c

Tensi tor E i e c ^ r c n i c s Inc

Genera i zed

vater Tao le E eva t ion Map

for Jani^arj 3 1989

WELL

ERM IS

ERM 2S

ERM 3S

ERM 4S

ERM 5S

ERM 5D

Table 3

WATER GAUGING AND SURVEY DATA

MP ELEVATION

ft above MSL

86029

84387

82262

81995

82238

82237

DEPTH TO

WATER

ft below MP

9 10

3 46

160

348

9 00

100

TOTAL DEPTH

ft below MP

1345

1980

1620

17 75

WATER TABLE ELEVATION

ft above MSL

851 19

84041

82102

81647

813 38

82137

All measurements made on January 3 1989 by ERM

Frozen plug prevented measurement Depth to ice

The

Group

likely to exceed a couple of inches The difference in the depth to ice in ERM-5D and the depth to water in ERM-5S is about eight feet This represents a strong upward vertical gradient especially since ERM-5S is screened between 6 and 16 feet below grade and EKM-5D is screened between 27 and 32 feet below grade

Although ERM-5S and -5D are screened in similar strata based on sediment texture the blow counts increased considerably beyond 15 feet below grade indicating a tighter zone as described earlier The increased compaction with depth and the upward vertical gradient would tend to hinder the downward migration of dissolved contaminants in this area Dissolved contaminant flow is probably concentrated in the upper till layer due to these combined factors

Because of the difference in density between water and organic solvents a vertical gradient alone would not prohibit the downward migration of a DNAPL As discussed earlier however there is currently no evidence to indicate the presence of a DNAPL

344 Ground Water Quality

Organics

Table 4 is a summary of volatile organic concentrations in ground water (as determined by the VTDEC laboratory) from the on-site monitoring wells installed by ERM Figure 5 shows the generalized TCA plume at the site Five solvent-related compounds from the EPA Method 624 suite of parameters were identified in the overburden at the site Well ERM-5D was frozen above ground at the time of sampling and therefore no data is available

Of the six compounds detected at the site several are likely breakdown products of the more prevalent contaminants TCA is known to break down abiotically to 11-DCE and through biodegradation to 11-DCA The kinetics of the reactions favor the formation of 11-DCA It is likely that the remaining constituents trichloroethene (TCE) tetrachloroethene (PCE) and chloroform are virgin chemicals

The upgradient and downgradient wells EPJM-1S and -5S both had non-detectable readings of volatile organic chemicals This would indicate that no additional sources of ground water contamination exist upgradient of the disposal pit Although the non-detectable reading in ERM-5S indicates that considerable attenuation of contaminants has occurred between the disposal pit and beyond the fire pond it does not necessarily demonstrate that ERM-5S is the furthest downgradient advance of contaminants in ground water It is possible that the leading edge of contamshy

23 Thlaquo

Group

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1 ntsrm 1 tts stream

perennial strsam

Surface Wcw2r~ Sample

N 100

Mom tor irg We I

TCA (ODD) D or nondetsctacia

t Cancentnac

ERM F -e o Sea 1e ( Fee t )

New Erg lard 1nc

00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

ERM-4S About 400 south ofERM-2S at the northwest

Evaluate potential flow around the western side of the fire

corner of the fire pond pond

EKM-5S Southeast side offire pond

To assess shallow transport beyond the fire pond and

vertical flow

ERM-5D Southeast side of To assess deep transport fire pond underneath the fire pond

and vertical flow

212 Drilling Methodology

ERM subcontracted with CATOH Environmental Companies Inc of Albany NY for drilling services Several different drilling methods were used depending upon the soil type and total well depth Precautions were taken to assure that no cross contamination between aquifers occurred during drilling A Mobile B-61 Drill Rig capable of both rotary and hollow stem auger drilling was used Appendix C includes detailed drilling logs graphic logs and well construction diagrams

Well ERM-1S was drilled to a depth of 17 feet and wells ERM-3S 4S and 5S were drilled to 18 feet deep using 425 inch ID hollow stem augers

Well ERM-2S was begun using 625 inch inner diameter (ID) hollow stem augers (HSA) An increase in soil compaction required a change to rotary drilling at a depth of 34 feet Air rotary with a nominal six inch diameter tricone bit was used from 34 to 39 feet below ground surface Sand began to clog the bit at a depth of 39 feet Nominal four inch diameter steel casing was driven to 39 feet and the drilling method was changed to wash rotary with a nominal four inch diameter tricone bit The casing kept the sand from caving into the boring and sealed off the potentially contaminated soils above 39 feet from the deeper soils Wash rotary drilling was continued until the final boring depth 60 feet was achieved This boring was filled up to 19 feet below grade with bentonite to complete the well in the most contaminated zone based on the field screening of split spoon sediments

Monitoring well ERM-5D was drilled with 625 inch ID HSA to a depth of 20 feet An increase in soil density required a change in drilling method to wash rotary using a nominal four inch diameter tricone bit At a depth of 37 feet sand began to fill the boring and nominal four inch diameter steel casing was driven to a depth of 35 feet As with well ERM-2S the casing isolated the surface sediments The final depth of this boring was 57 feet however the boring was backfilled with bentonite up to 34 feet below grade above which the well was completed

213 Soil Sampling and Analysis

ERM performed standard split spoon sampling in accordance with ASTM standards (at intervals of five feet) in all soil borings during drilling An ERM hydrogeologist logged all samples describing all lithologic variations Samples were then stored in glass jars covered with aluminum foil capped and labelled Name of sample date time depth and blowcounts are labelled on each jar

ERM screened soil samples via headspace analysis using a portable field detector for organic vapors Either a photoionization detector (HNU PI-101) or a flame ionization detector (Foxboro Instruments OVA Model 128) was used In most cases organic vapors were measured both when the split spoon was opened and 24 hours later The 24 hour measurement is taken from the headspace by puncturing the aluminum foil in the sample jar after the sample is allowed to equilibrate at room temperature No soil samples were delivered to a laboratory for analysis

214 Well Construction

Following completion of the borings to total depth a one to two foot thick sandpack was added as a foundation for the well casing and to prevent the clogging of the screen with fine material from the formation In ERM-2S and -5D bentonite was used to fill in the borings from 60 to 19 feet below grade and 57 to 34 feet below grade respectively prior to the addition of the sandpack This was done so that the well screens could be set in the zone of highest contamination based on field screening

Two-inch diameter 0020 inch slot 304 stainless steel screen and riser were used for well construction Five feet of slotted screen was used in ERM-5D Ten feet of slotted screen was used in each of the shallow overburden wells Stainless steel centralizers were used in all wells to ensure that the screen was vertical and that the well was located in the center of the boring

The sandpack was deposited around the screened interval and extended approximately two feet above the top of the screen A bentonite pellet layer was then deposited above the sandpack to form a two-to-five foot seal A bentonite-cement grout was used to seal the remainder of the boring The top three to five feet of the boring consisted of Portland cement to provide a strong foundation for a protective steel casing The stainless steel risers protrude approximately two feet above the ground surface The protective casings are secured with locking caps

CATOH Environmental developed the wells following completion by pumping water from the well until the water became clear

22 Surveying Gauging and Collecting Water Samples

ERM subcontracted Gerald E Morrissey Inc of Bennington Vermont to survey all monitoring well locations at the site to a US Coast amp Geodetic Survey datum Elevations at the ground surface the top of the outer well casing and the top inner stainless steel pipe casing were measured

Prior to any ground water sampling an ERM hydrogeologist measured static water levels to the nearest one-hundredth of a foot The water in ERM-5D was frozen but a measurement was taken to the top of the ice Total depth was measured in all wells but ERM-5D and -3S A plug of ice prohibited measurement of total depth in ERM-3S

An ERM hydrogeologist evacuated at least three well volumes of water from the wells using dedicated bottom filling PVC bailers VTDEC personnel then collected samples for analysis of volatile organics by EPA Method 601602 In addition the Vermont DEC collected samples for analysis of priority pollutant metals

Surface water samples were collected by submersing vials and jars in the streams as designated on Figure 2 Analysis of surface water samples was identical to that of ground water samples

ERM collected samples which were delivered to Eastern Analytical Laboratories Inc (EAL) of North Billerica Massachusetts Because of maintenance being performed on EALs GCMS the samples were delivered to Toxicon Laboratories of Woburn Massachusetts The resulting data were determined by ERM to be invalid due to poor intralab chain-of-custody protocols at Toxicon and inconsistencies in laboratory procedures by Toxicon personnel

30 RESULTS AND DISCUSSION

3 1 Physiography and Regional Geology

The Tansitor site is in the southwestern corner of Vermont (Figure 1) in the Taconic Range This area is in the Hudson River basin The site is at the southern base of Whipstock Hill approximately 35 miles west of the center of Bennington Vermont An unnamed hill lies directly south across the valley

The geology of the vicinity is characterized by an overburden of glacial materials underlain by Walloomsic Slate No bedrock outcrops were observed on site The valley in which Tansitor is located was part of a glacial lake when recessional moraines blocked the valley drainage to the west A glacioshylacustrine clay deposit formed in the lake bottom and was later covered with till The extent of this clay is not well-documented in the literature

It is unclear whether this clay layer is continuous across the valley and whether it would act as an effective barrier to downward migration of contaminants into the bedrock ag_uifer The EPAs Site Inspection report states that the depth to bedrock (slate) at the Severs1 property 600 feet west of the site is 80 feet which if correct would indicate the absence of an effective clay layer at that location However if the wetlands or stream south of Route 9 represent a ground water discharge zone the presence of a limited on-site clay layer could prevent migration of contaminants into the bedrock These issues will be resolved in future investigations

The topographic slope is to the southeast An unnamed perennial stream is located across Route 9 from the site and flows towards the southwest for about 05 miles before entering Browns Brook which flows west about four miles before entering the Hoosic River An intermittent stream begins near the northeastern corner of the main building and joins the perennial stream in the wetland south of the site

3 2 Site Geology

The overburden at the Tansitor site consists of glacial tills and glacio-lacustrine clays Figure 3a shows the location of an on-site cross-section Figure 3b is a generalized cross-section for the site The till matrix is primarily mixed clays and silts with up to 40 percent sand and gravel In general till compaction increases with depth and with an increase in clay content The exact thickness of the overburden is unknown Sorption of contaminants onto the overburden sediments is likely enhanced by the high clay content of the till which could retard the movement of the contaminants

11 The

o o o o o o CO CO rr CJ o CO CO CO CO 00 CO

uea|j

A compact orange silty clay of glacio-lacustrine origin was found in both ERM-2S and ERM-5D at respective depths of 44 and 50 feet below grade (798 and 770 feet above Mean Sea Level) The thickness of this layer is a minimum of seven feet at ERM-5D and a minimum of 18 feet at ERM-2S (both borings were halted before the clays were completely penetrated) The other shallow wells were not advanced deep enough to intercept the clay layer

Within the till layer in ERM-2S and -5D a significant increase in the number of blow counts occurred at 10 and 15 feet respectively This reflects an increase in sediment compaction at these depths Since the sediment texture is the same above and below these intervals it is likely that the upper layer represents disturbed sediments possibly a collapse or slump structure

A lens of gray clay was found between 10 and 12 feet below ground level in ERM-4S The degree to which this may act as an impermeable barrier depends in part on the lateral extent of the clay lens

Both ERM-4S and -5D have seams of fine sand bedded with the silty clays At ERM-2S a three foot diameter boulder was intersected

Bedrock was not encountered in any of the borings Contrary to prior reports bedrock does not appear to outcrop in the immediate vicinity of the disposal pit The only bedrock outcrops observed were on the northern side of Whipstock Hill far upgradient of the site

3 3 Soil Quality

Previous soil sampling by Tansitor in the disposal pit area is described in Appendix A No additional sampling in this area was performed by ERM Results of ERMs field screening of split spoon soil samples are shown in Table 1 As indicated only one sample at the zero to 20 foot depth from the ERM-1S boring had a detection using an HNU meter The reading of 20 ppm could be due to the moisture content of the soil or the presence of VOCs Only laboratory or other more accurate analysis could confirm the presence of VOCs Future soil sampling in the disposal pit area should address this issue

In boring ERM-2S all samples between 50 and 44 feet below grade had detections of volatile organics The highest concentrations in this boring were detected between 50 and 12 feet below ground level (up to 700 ppm) At 44 feet below grade a tight clay was encountered and no volatiles were detected below this point The spoon collected above the clay layer at 40 to 42 feet below grade had a concentration of 50 ppm which is

14

Table 1

Results of Field Screening of Split Spoon Sediments

(ppm)

24 HOUR 24 HOUR

WELL NO DEPTH ON SITE HEADSPACE WELL NO DEPTH ON SITE HEADSPACE

1S 0-2 2 4S 0-2 ND ND

5-7 ND ND 5-7 lt1 ND

10-12 ND ND 10-12 ND ND

15-17 ND ND 15-17 ND ND

18-20 ND ND

2S 0-2 ND

5-7 -shy gt100 5D 0-2 ND

10-12 -shy 700 5-7 -- 3

15-17 -shy 85 10-12 -- 1

20-22 -shy 4 15-17 NO ND

25-27 -shy 6 20-22 ND ND

30-32 -shy 10 25-27 NO ND

325-34 -shy 65 30-32 80 ND

39-40 -shy 30 35-37 ND NO

40-42 -shy 5 40-42 ND ND

45-47 NO ND 45-47 ND NO

50-52 ND ND 50-52 ND NO

55-57 ND ND 55-57 NO ND

60-62 ND

-shy INDICATES THAT NO READING WAS TAKEN

3S 0-2 ND ND

5-7 ND ND ONLY PEAK CONCENTRATIONS ARE LISTED

10-12 ND ND

I | 15-17 I lt1 ND

I | 18-20 I lt1 2

The

significantly below the peak concentrations in the boring This concentration which is far below the solubility limit of the VOCs detected at the site would indicate that a Dense Non-Aqueous Phase Liquid (DNAPL) is not present above the clay layer at this location Based on these readings the well screen for EPxM-2S was set between 70 and 17 feet below grade

ERM-3S had minor detections between 15 and 20 feet below grade of 20 ppm or less ERM-4S had a trace detection at the 50 to 70 foot interval of less than 10 ppm Similarly concentrations of 30 ppm or less were detected between 50 and 12 feet below grade in ERM-5D

The Vermont unofficial unpublished guidelines for soil removal are based on RCPJV landban requirements The general guidance is to multiply the landban concentration by a factor of 20 In the absence of a landban value the MCL multiplied by a factor of 20 should be used For constituents at the site the following guidelines may be applicable

Consituent Remediation Guideline

111-trichloroethane 8200 ppb (landban-based)

trichloroethene 100 ppb (MCL-based)

chloroform 2000 ppb (MCL-based)

11-dichloroethene 140 ppb (MCL-based)

tetrachloroethene 100 ppb ( p r o p o s e d based)

MCL-

11-dichloroethane 1400 ppb (based on VT water quality guideline)

Since these guidelines are chemical-specific laboratory analyses of soil samples are necessary to determine soil remediation levels for the Tansitor site ERM did not submit any soil samples for laboratory analysis during this investigation although prior investigations included soil sampling and analysis in the disposal pit area (Appendix A)

Since a soil excavation or in-situ remediation would not normally extend below the water table the soil removal guidelines do not necessarily apply to samples collected below the water table Saturated contaminated sediments are generally addressed through a ground water remedial action

16 TtK

34 Hydroqeology and Water Quality

In order to assess potential impacts of the Tansitor disposal pit site EKM investigated ground and surface water conditions on and directly downgradient of the site As ground and surface water are interactive an analysis of both systems is necessary to assess potential migration of chemicals

For comparative purposes the Maximum Contaminant Levels (MCLs) used for defining drinking water quality are listed below for those chemicals present at the site

Parameter MCL (ppb)

11-dichloroethane 70 (VT guideline not an MCL) 11-dichloroethene 7 111-trichloroethane 200 trichloroethene 5 tetrachloroethene 5 (proposed MCL) chloroform 100 (total trihalomethanes)

341 Historical Water Quality

An extensive sampling history exists at the site since 1983 Although limited ground water sampling occurred primarily in nearby water supply wells a large volume of surface water quality data exists Unfortunately the surface water sampling locations were never standardized by staking locations in the field Therefore it is difficult to generate trends over time at specific locations The surface water sampling points should be considered approximate locations Appendix B contains a summary of all water samples collected at and near the Tansitor site

In terms of ground water quality results there has never been a detection of volatile organics in any of the residential water supply wells adjacent to the Tansitor site Only one sampling event (January 20 1984) indicated the possible presence of volatiles in the Tansitor tap water Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only detected once it is likely that this detection was a false positive or indicative of laboratory contamination Follow-up sampling to this investigation will address residential well water quality

17 The

Group

342 Surface Water Quality

Surface water quality results from the January 3 1989 event are summarized in Table 2 and historical data appear in Appendix B Sampling locations are shown on Figure 2 As indicated

sample S-3 is located northeast of the firepond

- sample S-7 is located at an outfall of a pipeline originating at the firepond before entering the perennial stream

samples S-ll and S-13 represent upgradient and downgradient locations respectively on the perennial stream south of Route 9 and

- sample S-16 is located at an upgradient point on the intermittent stream north of the facility

Sample S-3 had no detections of VOCs This result is different from past sampling events (Appendix B) where S-3 was the most contaminated of any of the surface water locations After discussions with VTDEC personnel it appears that the location of S-3 has varied in the past Therefore no accurate trends can be determined at this time

VOC concentrations were non-detectable in S-ll S-7 had a total of 142 ppb and S-13 had a total of 24 ppb Based on the location of sampling points it appears that chemicals are entering the stream downgradient of S-ll either from tributary surface water sources or from ground water discharge The Maximum Contaminant Level (MCL) for 11-dichloroethane (11-DCA) has not been defined however the unofficial Vermont drinking water guideline of 70 ppb was not exceeded The MCLs for 11shydichloroethene (11-DCE) and 11 1-trichloroethane (TCA) the other two chemicals detected in S-7 and S-13 were also not exceeded The MCLs are presented here for comparative purposes alone since the stream is not a likely source of drinking water

Sample S-16 collected from the on-site intermittent stream had a concentration of 16615 ppb of total volatiles which exceeds drinking water standards for all constituents detected This concentration may be due to ground water discharge from the slope north of the firepond some of which drains west into the intermittent stream The presence of tetrachloroethene (PCE) at 20 ppb which was not detected anywhere else at the site warrants further investigation in this area

18 The

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343 Ground Water Flow and Direction

Figure 4 shows a water table map across the site Table 3 summarizes the water level data Ground water flow is locally towards the southeast at the site at a gradient of approximately 0065 ftft

Flow Rates

Using the natural range of values below and the modified Darcy equation the average linear velocity for the ground water in the overburden above the clay at the site is probably between 67 ftyr and 0027 ftyr

hydraulic conductivity 10~4 to 10~7 cmsec of till (K) (after Freeze amp Cherry

1979)

hydraulic gradient (i) 0065 ftft (calculated between

ERM-1S and -5S)

effective porosity (n) 10 to 25

v = (Ki)n

Although permeability (K) data were not obtained during this initial investigation a likely value of permeability is 10~4

cmsec with an effective porosity of 20 which would result in an average linear velocity of 34 ftyr for the upper till zone Field permeability testing is warranted to refine this estimate The more compact lower till likely has a lower permeability which would result in a lower average linear velocity which could restrict contaminant transport

In terms of a sensitivity analysis for the above equation velocity and effective porosity are inversely proportional Therefore a larger effective porosity would result in a slower average linear velocity A higher permeability would result in a higher velocity Applying these velocity estimates to contaminant transport must take into account dispersion and retardation effects

Vertical Gradients

At the time that ERM measured the water levels in the monitoring wells water in ERM-5D was frozen in the casing above ground level This is due to a high water level The depth to ice can not be directly correlated to depth to water in this well because of expansion effects however the difference is not

20

tennis courts

S-l 1 1 ntsrml ttsrjlt stream

perannial stream

_EGEND

Surfccs Water Samp1e

fanitor(ng Wei 1

Water Table Elevatlor ~t above MSL)

Water Taole Contours

D1rect1 on of G^ourcwator F 1 ov

SCALE (feet)

bull00 280 300 400

N

ERM i gare 4 New Engona ~c

Tensi tor E i e c ^ r c n i c s Inc

Genera i zed

vater Tao le E eva t ion Map

for Jani^arj 3 1989

WELL

ERM IS

ERM 2S

ERM 3S

ERM 4S

ERM 5S

ERM 5D

Table 3

WATER GAUGING AND SURVEY DATA

MP ELEVATION

ft above MSL

86029

84387

82262

81995

82238

82237

DEPTH TO

WATER

ft below MP

9 10

3 46

160

348

9 00

100

TOTAL DEPTH

ft below MP

1345

1980

1620

17 75

WATER TABLE ELEVATION

ft above MSL

851 19

84041

82102

81647

813 38

82137

All measurements made on January 3 1989 by ERM

Frozen plug prevented measurement Depth to ice

The

Group

likely to exceed a couple of inches The difference in the depth to ice in ERM-5D and the depth to water in ERM-5S is about eight feet This represents a strong upward vertical gradient especially since ERM-5S is screened between 6 and 16 feet below grade and EKM-5D is screened between 27 and 32 feet below grade

Although ERM-5S and -5D are screened in similar strata based on sediment texture the blow counts increased considerably beyond 15 feet below grade indicating a tighter zone as described earlier The increased compaction with depth and the upward vertical gradient would tend to hinder the downward migration of dissolved contaminants in this area Dissolved contaminant flow is probably concentrated in the upper till layer due to these combined factors

Because of the difference in density between water and organic solvents a vertical gradient alone would not prohibit the downward migration of a DNAPL As discussed earlier however there is currently no evidence to indicate the presence of a DNAPL

344 Ground Water Quality

Organics

Table 4 is a summary of volatile organic concentrations in ground water (as determined by the VTDEC laboratory) from the on-site monitoring wells installed by ERM Figure 5 shows the generalized TCA plume at the site Five solvent-related compounds from the EPA Method 624 suite of parameters were identified in the overburden at the site Well ERM-5D was frozen above ground at the time of sampling and therefore no data is available

Of the six compounds detected at the site several are likely breakdown products of the more prevalent contaminants TCA is known to break down abiotically to 11-DCE and through biodegradation to 11-DCA The kinetics of the reactions favor the formation of 11-DCA It is likely that the remaining constituents trichloroethene (TCE) tetrachloroethene (PCE) and chloroform are virgin chemicals

The upgradient and downgradient wells EPJM-1S and -5S both had non-detectable readings of volatile organic chemicals This would indicate that no additional sources of ground water contamination exist upgradient of the disposal pit Although the non-detectable reading in ERM-5S indicates that considerable attenuation of contaminants has occurred between the disposal pit and beyond the fire pond it does not necessarily demonstrate that ERM-5S is the furthest downgradient advance of contaminants in ground water It is possible that the leading edge of contamshy

23 Thlaquo

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TCA (ODD) D or nondetsctacia

t Cancentnac

ERM F -e o Sea 1e ( Fee t )

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00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

213 Soil Sampling and Analysis

ERM performed standard split spoon sampling in accordance with ASTM standards (at intervals of five feet) in all soil borings during drilling An ERM hydrogeologist logged all samples describing all lithologic variations Samples were then stored in glass jars covered with aluminum foil capped and labelled Name of sample date time depth and blowcounts are labelled on each jar

ERM screened soil samples via headspace analysis using a portable field detector for organic vapors Either a photoionization detector (HNU PI-101) or a flame ionization detector (Foxboro Instruments OVA Model 128) was used In most cases organic vapors were measured both when the split spoon was opened and 24 hours later The 24 hour measurement is taken from the headspace by puncturing the aluminum foil in the sample jar after the sample is allowed to equilibrate at room temperature No soil samples were delivered to a laboratory for analysis

214 Well Construction

Following completion of the borings to total depth a one to two foot thick sandpack was added as a foundation for the well casing and to prevent the clogging of the screen with fine material from the formation In ERM-2S and -5D bentonite was used to fill in the borings from 60 to 19 feet below grade and 57 to 34 feet below grade respectively prior to the addition of the sandpack This was done so that the well screens could be set in the zone of highest contamination based on field screening

Two-inch diameter 0020 inch slot 304 stainless steel screen and riser were used for well construction Five feet of slotted screen was used in ERM-5D Ten feet of slotted screen was used in each of the shallow overburden wells Stainless steel centralizers were used in all wells to ensure that the screen was vertical and that the well was located in the center of the boring

The sandpack was deposited around the screened interval and extended approximately two feet above the top of the screen A bentonite pellet layer was then deposited above the sandpack to form a two-to-five foot seal A bentonite-cement grout was used to seal the remainder of the boring The top three to five feet of the boring consisted of Portland cement to provide a strong foundation for a protective steel casing The stainless steel risers protrude approximately two feet above the ground surface The protective casings are secured with locking caps

CATOH Environmental developed the wells following completion by pumping water from the well until the water became clear

22 Surveying Gauging and Collecting Water Samples

ERM subcontracted Gerald E Morrissey Inc of Bennington Vermont to survey all monitoring well locations at the site to a US Coast amp Geodetic Survey datum Elevations at the ground surface the top of the outer well casing and the top inner stainless steel pipe casing were measured

Prior to any ground water sampling an ERM hydrogeologist measured static water levels to the nearest one-hundredth of a foot The water in ERM-5D was frozen but a measurement was taken to the top of the ice Total depth was measured in all wells but ERM-5D and -3S A plug of ice prohibited measurement of total depth in ERM-3S

An ERM hydrogeologist evacuated at least three well volumes of water from the wells using dedicated bottom filling PVC bailers VTDEC personnel then collected samples for analysis of volatile organics by EPA Method 601602 In addition the Vermont DEC collected samples for analysis of priority pollutant metals

Surface water samples were collected by submersing vials and jars in the streams as designated on Figure 2 Analysis of surface water samples was identical to that of ground water samples

ERM collected samples which were delivered to Eastern Analytical Laboratories Inc (EAL) of North Billerica Massachusetts Because of maintenance being performed on EALs GCMS the samples were delivered to Toxicon Laboratories of Woburn Massachusetts The resulting data were determined by ERM to be invalid due to poor intralab chain-of-custody protocols at Toxicon and inconsistencies in laboratory procedures by Toxicon personnel

30 RESULTS AND DISCUSSION

3 1 Physiography and Regional Geology

The Tansitor site is in the southwestern corner of Vermont (Figure 1) in the Taconic Range This area is in the Hudson River basin The site is at the southern base of Whipstock Hill approximately 35 miles west of the center of Bennington Vermont An unnamed hill lies directly south across the valley

The geology of the vicinity is characterized by an overburden of glacial materials underlain by Walloomsic Slate No bedrock outcrops were observed on site The valley in which Tansitor is located was part of a glacial lake when recessional moraines blocked the valley drainage to the west A glacioshylacustrine clay deposit formed in the lake bottom and was later covered with till The extent of this clay is not well-documented in the literature

It is unclear whether this clay layer is continuous across the valley and whether it would act as an effective barrier to downward migration of contaminants into the bedrock ag_uifer The EPAs Site Inspection report states that the depth to bedrock (slate) at the Severs1 property 600 feet west of the site is 80 feet which if correct would indicate the absence of an effective clay layer at that location However if the wetlands or stream south of Route 9 represent a ground water discharge zone the presence of a limited on-site clay layer could prevent migration of contaminants into the bedrock These issues will be resolved in future investigations

The topographic slope is to the southeast An unnamed perennial stream is located across Route 9 from the site and flows towards the southwest for about 05 miles before entering Browns Brook which flows west about four miles before entering the Hoosic River An intermittent stream begins near the northeastern corner of the main building and joins the perennial stream in the wetland south of the site

3 2 Site Geology

The overburden at the Tansitor site consists of glacial tills and glacio-lacustrine clays Figure 3a shows the location of an on-site cross-section Figure 3b is a generalized cross-section for the site The till matrix is primarily mixed clays and silts with up to 40 percent sand and gravel In general till compaction increases with depth and with an increase in clay content The exact thickness of the overburden is unknown Sorption of contaminants onto the overburden sediments is likely enhanced by the high clay content of the till which could retard the movement of the contaminants

11 The

o o o o o o CO CO rr CJ o CO CO CO CO 00 CO

uea|j

A compact orange silty clay of glacio-lacustrine origin was found in both ERM-2S and ERM-5D at respective depths of 44 and 50 feet below grade (798 and 770 feet above Mean Sea Level) The thickness of this layer is a minimum of seven feet at ERM-5D and a minimum of 18 feet at ERM-2S (both borings were halted before the clays were completely penetrated) The other shallow wells were not advanced deep enough to intercept the clay layer

Within the till layer in ERM-2S and -5D a significant increase in the number of blow counts occurred at 10 and 15 feet respectively This reflects an increase in sediment compaction at these depths Since the sediment texture is the same above and below these intervals it is likely that the upper layer represents disturbed sediments possibly a collapse or slump structure

A lens of gray clay was found between 10 and 12 feet below ground level in ERM-4S The degree to which this may act as an impermeable barrier depends in part on the lateral extent of the clay lens

Both ERM-4S and -5D have seams of fine sand bedded with the silty clays At ERM-2S a three foot diameter boulder was intersected

Bedrock was not encountered in any of the borings Contrary to prior reports bedrock does not appear to outcrop in the immediate vicinity of the disposal pit The only bedrock outcrops observed were on the northern side of Whipstock Hill far upgradient of the site

3 3 Soil Quality

Previous soil sampling by Tansitor in the disposal pit area is described in Appendix A No additional sampling in this area was performed by ERM Results of ERMs field screening of split spoon soil samples are shown in Table 1 As indicated only one sample at the zero to 20 foot depth from the ERM-1S boring had a detection using an HNU meter The reading of 20 ppm could be due to the moisture content of the soil or the presence of VOCs Only laboratory or other more accurate analysis could confirm the presence of VOCs Future soil sampling in the disposal pit area should address this issue

In boring ERM-2S all samples between 50 and 44 feet below grade had detections of volatile organics The highest concentrations in this boring were detected between 50 and 12 feet below ground level (up to 700 ppm) At 44 feet below grade a tight clay was encountered and no volatiles were detected below this point The spoon collected above the clay layer at 40 to 42 feet below grade had a concentration of 50 ppm which is

14

Table 1

Results of Field Screening of Split Spoon Sediments

(ppm)

24 HOUR 24 HOUR

WELL NO DEPTH ON SITE HEADSPACE WELL NO DEPTH ON SITE HEADSPACE

1S 0-2 2 4S 0-2 ND ND

5-7 ND ND 5-7 lt1 ND

10-12 ND ND 10-12 ND ND

15-17 ND ND 15-17 ND ND

18-20 ND ND

2S 0-2 ND

5-7 -shy gt100 5D 0-2 ND

10-12 -shy 700 5-7 -- 3

15-17 -shy 85 10-12 -- 1

20-22 -shy 4 15-17 NO ND

25-27 -shy 6 20-22 ND ND

30-32 -shy 10 25-27 NO ND

325-34 -shy 65 30-32 80 ND

39-40 -shy 30 35-37 ND NO

40-42 -shy 5 40-42 ND ND

45-47 NO ND 45-47 ND NO

50-52 ND ND 50-52 ND NO

55-57 ND ND 55-57 NO ND

60-62 ND

-shy INDICATES THAT NO READING WAS TAKEN

3S 0-2 ND ND

5-7 ND ND ONLY PEAK CONCENTRATIONS ARE LISTED

10-12 ND ND

I | 15-17 I lt1 ND

I | 18-20 I lt1 2

The

significantly below the peak concentrations in the boring This concentration which is far below the solubility limit of the VOCs detected at the site would indicate that a Dense Non-Aqueous Phase Liquid (DNAPL) is not present above the clay layer at this location Based on these readings the well screen for EPxM-2S was set between 70 and 17 feet below grade

ERM-3S had minor detections between 15 and 20 feet below grade of 20 ppm or less ERM-4S had a trace detection at the 50 to 70 foot interval of less than 10 ppm Similarly concentrations of 30 ppm or less were detected between 50 and 12 feet below grade in ERM-5D

The Vermont unofficial unpublished guidelines for soil removal are based on RCPJV landban requirements The general guidance is to multiply the landban concentration by a factor of 20 In the absence of a landban value the MCL multiplied by a factor of 20 should be used For constituents at the site the following guidelines may be applicable

Consituent Remediation Guideline

111-trichloroethane 8200 ppb (landban-based)

trichloroethene 100 ppb (MCL-based)

chloroform 2000 ppb (MCL-based)

11-dichloroethene 140 ppb (MCL-based)

tetrachloroethene 100 ppb ( p r o p o s e d based)

MCL-

11-dichloroethane 1400 ppb (based on VT water quality guideline)

Since these guidelines are chemical-specific laboratory analyses of soil samples are necessary to determine soil remediation levels for the Tansitor site ERM did not submit any soil samples for laboratory analysis during this investigation although prior investigations included soil sampling and analysis in the disposal pit area (Appendix A)

Since a soil excavation or in-situ remediation would not normally extend below the water table the soil removal guidelines do not necessarily apply to samples collected below the water table Saturated contaminated sediments are generally addressed through a ground water remedial action

16 TtK

34 Hydroqeology and Water Quality

In order to assess potential impacts of the Tansitor disposal pit site EKM investigated ground and surface water conditions on and directly downgradient of the site As ground and surface water are interactive an analysis of both systems is necessary to assess potential migration of chemicals

For comparative purposes the Maximum Contaminant Levels (MCLs) used for defining drinking water quality are listed below for those chemicals present at the site

Parameter MCL (ppb)

11-dichloroethane 70 (VT guideline not an MCL) 11-dichloroethene 7 111-trichloroethane 200 trichloroethene 5 tetrachloroethene 5 (proposed MCL) chloroform 100 (total trihalomethanes)

341 Historical Water Quality

An extensive sampling history exists at the site since 1983 Although limited ground water sampling occurred primarily in nearby water supply wells a large volume of surface water quality data exists Unfortunately the surface water sampling locations were never standardized by staking locations in the field Therefore it is difficult to generate trends over time at specific locations The surface water sampling points should be considered approximate locations Appendix B contains a summary of all water samples collected at and near the Tansitor site

In terms of ground water quality results there has never been a detection of volatile organics in any of the residential water supply wells adjacent to the Tansitor site Only one sampling event (January 20 1984) indicated the possible presence of volatiles in the Tansitor tap water Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only detected once it is likely that this detection was a false positive or indicative of laboratory contamination Follow-up sampling to this investigation will address residential well water quality

17 The

Group

342 Surface Water Quality

Surface water quality results from the January 3 1989 event are summarized in Table 2 and historical data appear in Appendix B Sampling locations are shown on Figure 2 As indicated

sample S-3 is located northeast of the firepond

- sample S-7 is located at an outfall of a pipeline originating at the firepond before entering the perennial stream

samples S-ll and S-13 represent upgradient and downgradient locations respectively on the perennial stream south of Route 9 and

- sample S-16 is located at an upgradient point on the intermittent stream north of the facility

Sample S-3 had no detections of VOCs This result is different from past sampling events (Appendix B) where S-3 was the most contaminated of any of the surface water locations After discussions with VTDEC personnel it appears that the location of S-3 has varied in the past Therefore no accurate trends can be determined at this time

VOC concentrations were non-detectable in S-ll S-7 had a total of 142 ppb and S-13 had a total of 24 ppb Based on the location of sampling points it appears that chemicals are entering the stream downgradient of S-ll either from tributary surface water sources or from ground water discharge The Maximum Contaminant Level (MCL) for 11-dichloroethane (11-DCA) has not been defined however the unofficial Vermont drinking water guideline of 70 ppb was not exceeded The MCLs for 11shydichloroethene (11-DCE) and 11 1-trichloroethane (TCA) the other two chemicals detected in S-7 and S-13 were also not exceeded The MCLs are presented here for comparative purposes alone since the stream is not a likely source of drinking water

Sample S-16 collected from the on-site intermittent stream had a concentration of 16615 ppb of total volatiles which exceeds drinking water standards for all constituents detected This concentration may be due to ground water discharge from the slope north of the firepond some of which drains west into the intermittent stream The presence of tetrachloroethene (PCE) at 20 ppb which was not detected anywhere else at the site warrants further investigation in this area

18 The

co

o CN o

rH CO

P

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CO T CN CN CN

rH

CNO

0

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bullH U) rH rH

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ID Q Q 2 2

CN Q 2

CN

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rH

cn Q Q Q 2 2 2

Q Q 2 2

Q 2

(0 4-gt rH O

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343 Ground Water Flow and Direction

Figure 4 shows a water table map across the site Table 3 summarizes the water level data Ground water flow is locally towards the southeast at the site at a gradient of approximately 0065 ftft

Flow Rates

Using the natural range of values below and the modified Darcy equation the average linear velocity for the ground water in the overburden above the clay at the site is probably between 67 ftyr and 0027 ftyr

hydraulic conductivity 10~4 to 10~7 cmsec of till (K) (after Freeze amp Cherry

1979)

hydraulic gradient (i) 0065 ftft (calculated between

ERM-1S and -5S)

effective porosity (n) 10 to 25

v = (Ki)n

Although permeability (K) data were not obtained during this initial investigation a likely value of permeability is 10~4

cmsec with an effective porosity of 20 which would result in an average linear velocity of 34 ftyr for the upper till zone Field permeability testing is warranted to refine this estimate The more compact lower till likely has a lower permeability which would result in a lower average linear velocity which could restrict contaminant transport

In terms of a sensitivity analysis for the above equation velocity and effective porosity are inversely proportional Therefore a larger effective porosity would result in a slower average linear velocity A higher permeability would result in a higher velocity Applying these velocity estimates to contaminant transport must take into account dispersion and retardation effects

Vertical Gradients

At the time that ERM measured the water levels in the monitoring wells water in ERM-5D was frozen in the casing above ground level This is due to a high water level The depth to ice can not be directly correlated to depth to water in this well because of expansion effects however the difference is not

20

tennis courts

S-l 1 1 ntsrml ttsrjlt stream

perannial stream

_EGEND

Surfccs Water Samp1e

fanitor(ng Wei 1

Water Table Elevatlor ~t above MSL)

Water Taole Contours

D1rect1 on of G^ourcwator F 1 ov

SCALE (feet)

bull00 280 300 400

N

ERM i gare 4 New Engona ~c

Tensi tor E i e c ^ r c n i c s Inc

Genera i zed

vater Tao le E eva t ion Map

for Jani^arj 3 1989

WELL

ERM IS

ERM 2S

ERM 3S

ERM 4S

ERM 5S

ERM 5D

Table 3

WATER GAUGING AND SURVEY DATA

MP ELEVATION

ft above MSL

86029

84387

82262

81995

82238

82237

DEPTH TO

WATER

ft below MP

9 10

3 46

160

348

9 00

100

TOTAL DEPTH

ft below MP

1345

1980

1620

17 75

WATER TABLE ELEVATION

ft above MSL

851 19

84041

82102

81647

813 38

82137

All measurements made on January 3 1989 by ERM

Frozen plug prevented measurement Depth to ice

The

Group

likely to exceed a couple of inches The difference in the depth to ice in ERM-5D and the depth to water in ERM-5S is about eight feet This represents a strong upward vertical gradient especially since ERM-5S is screened between 6 and 16 feet below grade and EKM-5D is screened between 27 and 32 feet below grade

Although ERM-5S and -5D are screened in similar strata based on sediment texture the blow counts increased considerably beyond 15 feet below grade indicating a tighter zone as described earlier The increased compaction with depth and the upward vertical gradient would tend to hinder the downward migration of dissolved contaminants in this area Dissolved contaminant flow is probably concentrated in the upper till layer due to these combined factors

Because of the difference in density between water and organic solvents a vertical gradient alone would not prohibit the downward migration of a DNAPL As discussed earlier however there is currently no evidence to indicate the presence of a DNAPL

344 Ground Water Quality

Organics

Table 4 is a summary of volatile organic concentrations in ground water (as determined by the VTDEC laboratory) from the on-site monitoring wells installed by ERM Figure 5 shows the generalized TCA plume at the site Five solvent-related compounds from the EPA Method 624 suite of parameters were identified in the overburden at the site Well ERM-5D was frozen above ground at the time of sampling and therefore no data is available

Of the six compounds detected at the site several are likely breakdown products of the more prevalent contaminants TCA is known to break down abiotically to 11-DCE and through biodegradation to 11-DCA The kinetics of the reactions favor the formation of 11-DCA It is likely that the remaining constituents trichloroethene (TCE) tetrachloroethene (PCE) and chloroform are virgin chemicals

The upgradient and downgradient wells EPJM-1S and -5S both had non-detectable readings of volatile organic chemicals This would indicate that no additional sources of ground water contamination exist upgradient of the disposal pit Although the non-detectable reading in ERM-5S indicates that considerable attenuation of contaminants has occurred between the disposal pit and beyond the fire pond it does not necessarily demonstrate that ERM-5S is the furthest downgradient advance of contaminants in ground water It is possible that the leading edge of contamshy

23 Thlaquo

Group

- -

Oi CO

00 IT) 0)

1 Q Q Q Q Q Q 2 2 222 2

sect w

rH

CO

CO en 3 vO CN co i P Q Q CN Q CN c sect 2 2 2 o w

e gti O SH O

CO o CO ^3 O gtpoundgt (N in 4J T3

CO ^ Crt rH in rd CO n OJ ^f ltN en M |

1 p bullgt - O O sect CO CO X) CO

W rH 0)

O wu

gti 4-) EH Q rH

C H o O O O o EH C O 2 CO ^f 31 O CN o gt o g O 01 [ rT rH rH T-J

1 P Q shy -0) ^ s 2 r- rH U3 in

K O o W rH

EH -H CD shyc lt X M CO o gtiT3

rH C

Q Q) rfl 3 2 amp CO P

i Q Q Q Q Q Q Ecc

O 01 0) rH OS 4-1 2 2 2 2 2 2 T3 O

sect0) C UO UX) CQ

0)

w (0

CO CO

4-1 2 o C O

-X O 4-gt

0) O C ampH O

2 en 03 W rH 0) 3 u rd C C 2 (d

o O I] (U a) x -H O c C 4-1 C rd rd CO 0) o U 0) X x o cu 0) SH a 4-J 4-1 lH C 4-gt ^ 4-) 0) Q) O Q) U O O TJ O o rH x 0) 4-1

QJ ^ gtH X 4-1 CO bullH g O o o cu

W O 4-1 gtH rH rH -H O O O -H Q -H ox XI rH r-l O o 2 4-gt HH O U EH O gt Ul

O P C O -H bullH 1 rH V) bull- 4-1 0 Q) U Q Q H x j OJ CO -H EH a 73 O 1 1 ~ O lt rH gt1

Z -H rH (H cH rH -H EH CL rH 3 o c x - -bull - SH O g rt3

o o P O ltH rH (H EH EH tlaquo C gt CO lt

Ths

wate 1 i no

1 ntsrm 1 tts stream

perennial strsam

Surface Wcw2r~ Sample

N 100

Mom tor irg We I

TCA (ODD) D or nondetsctacia

t Cancentnac

ERM F -e o Sea 1e ( Fee t )

New Erg lard 1nc

00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

CATOH Environmental developed the wells following completion by pumping water from the well until the water became clear

22 Surveying Gauging and Collecting Water Samples

ERM subcontracted Gerald E Morrissey Inc of Bennington Vermont to survey all monitoring well locations at the site to a US Coast amp Geodetic Survey datum Elevations at the ground surface the top of the outer well casing and the top inner stainless steel pipe casing were measured

Prior to any ground water sampling an ERM hydrogeologist measured static water levels to the nearest one-hundredth of a foot The water in ERM-5D was frozen but a measurement was taken to the top of the ice Total depth was measured in all wells but ERM-5D and -3S A plug of ice prohibited measurement of total depth in ERM-3S

An ERM hydrogeologist evacuated at least three well volumes of water from the wells using dedicated bottom filling PVC bailers VTDEC personnel then collected samples for analysis of volatile organics by EPA Method 601602 In addition the Vermont DEC collected samples for analysis of priority pollutant metals

Surface water samples were collected by submersing vials and jars in the streams as designated on Figure 2 Analysis of surface water samples was identical to that of ground water samples

ERM collected samples which were delivered to Eastern Analytical Laboratories Inc (EAL) of North Billerica Massachusetts Because of maintenance being performed on EALs GCMS the samples were delivered to Toxicon Laboratories of Woburn Massachusetts The resulting data were determined by ERM to be invalid due to poor intralab chain-of-custody protocols at Toxicon and inconsistencies in laboratory procedures by Toxicon personnel

30 RESULTS AND DISCUSSION

3 1 Physiography and Regional Geology

The Tansitor site is in the southwestern corner of Vermont (Figure 1) in the Taconic Range This area is in the Hudson River basin The site is at the southern base of Whipstock Hill approximately 35 miles west of the center of Bennington Vermont An unnamed hill lies directly south across the valley

The geology of the vicinity is characterized by an overburden of glacial materials underlain by Walloomsic Slate No bedrock outcrops were observed on site The valley in which Tansitor is located was part of a glacial lake when recessional moraines blocked the valley drainage to the west A glacioshylacustrine clay deposit formed in the lake bottom and was later covered with till The extent of this clay is not well-documented in the literature

It is unclear whether this clay layer is continuous across the valley and whether it would act as an effective barrier to downward migration of contaminants into the bedrock ag_uifer The EPAs Site Inspection report states that the depth to bedrock (slate) at the Severs1 property 600 feet west of the site is 80 feet which if correct would indicate the absence of an effective clay layer at that location However if the wetlands or stream south of Route 9 represent a ground water discharge zone the presence of a limited on-site clay layer could prevent migration of contaminants into the bedrock These issues will be resolved in future investigations

The topographic slope is to the southeast An unnamed perennial stream is located across Route 9 from the site and flows towards the southwest for about 05 miles before entering Browns Brook which flows west about four miles before entering the Hoosic River An intermittent stream begins near the northeastern corner of the main building and joins the perennial stream in the wetland south of the site

3 2 Site Geology

The overburden at the Tansitor site consists of glacial tills and glacio-lacustrine clays Figure 3a shows the location of an on-site cross-section Figure 3b is a generalized cross-section for the site The till matrix is primarily mixed clays and silts with up to 40 percent sand and gravel In general till compaction increases with depth and with an increase in clay content The exact thickness of the overburden is unknown Sorption of contaminants onto the overburden sediments is likely enhanced by the high clay content of the till which could retard the movement of the contaminants

11 The

o o o o o o CO CO rr CJ o CO CO CO CO 00 CO

uea|j

A compact orange silty clay of glacio-lacustrine origin was found in both ERM-2S and ERM-5D at respective depths of 44 and 50 feet below grade (798 and 770 feet above Mean Sea Level) The thickness of this layer is a minimum of seven feet at ERM-5D and a minimum of 18 feet at ERM-2S (both borings were halted before the clays were completely penetrated) The other shallow wells were not advanced deep enough to intercept the clay layer

Within the till layer in ERM-2S and -5D a significant increase in the number of blow counts occurred at 10 and 15 feet respectively This reflects an increase in sediment compaction at these depths Since the sediment texture is the same above and below these intervals it is likely that the upper layer represents disturbed sediments possibly a collapse or slump structure

A lens of gray clay was found between 10 and 12 feet below ground level in ERM-4S The degree to which this may act as an impermeable barrier depends in part on the lateral extent of the clay lens

Both ERM-4S and -5D have seams of fine sand bedded with the silty clays At ERM-2S a three foot diameter boulder was intersected

Bedrock was not encountered in any of the borings Contrary to prior reports bedrock does not appear to outcrop in the immediate vicinity of the disposal pit The only bedrock outcrops observed were on the northern side of Whipstock Hill far upgradient of the site

3 3 Soil Quality

Previous soil sampling by Tansitor in the disposal pit area is described in Appendix A No additional sampling in this area was performed by ERM Results of ERMs field screening of split spoon soil samples are shown in Table 1 As indicated only one sample at the zero to 20 foot depth from the ERM-1S boring had a detection using an HNU meter The reading of 20 ppm could be due to the moisture content of the soil or the presence of VOCs Only laboratory or other more accurate analysis could confirm the presence of VOCs Future soil sampling in the disposal pit area should address this issue

In boring ERM-2S all samples between 50 and 44 feet below grade had detections of volatile organics The highest concentrations in this boring were detected between 50 and 12 feet below ground level (up to 700 ppm) At 44 feet below grade a tight clay was encountered and no volatiles were detected below this point The spoon collected above the clay layer at 40 to 42 feet below grade had a concentration of 50 ppm which is

14

Table 1

Results of Field Screening of Split Spoon Sediments

(ppm)

24 HOUR 24 HOUR

WELL NO DEPTH ON SITE HEADSPACE WELL NO DEPTH ON SITE HEADSPACE

1S 0-2 2 4S 0-2 ND ND

5-7 ND ND 5-7 lt1 ND

10-12 ND ND 10-12 ND ND

15-17 ND ND 15-17 ND ND

18-20 ND ND

2S 0-2 ND

5-7 -shy gt100 5D 0-2 ND

10-12 -shy 700 5-7 -- 3

15-17 -shy 85 10-12 -- 1

20-22 -shy 4 15-17 NO ND

25-27 -shy 6 20-22 ND ND

30-32 -shy 10 25-27 NO ND

325-34 -shy 65 30-32 80 ND

39-40 -shy 30 35-37 ND NO

40-42 -shy 5 40-42 ND ND

45-47 NO ND 45-47 ND NO

50-52 ND ND 50-52 ND NO

55-57 ND ND 55-57 NO ND

60-62 ND

-shy INDICATES THAT NO READING WAS TAKEN

3S 0-2 ND ND

5-7 ND ND ONLY PEAK CONCENTRATIONS ARE LISTED

10-12 ND ND

I | 15-17 I lt1 ND

I | 18-20 I lt1 2

The

significantly below the peak concentrations in the boring This concentration which is far below the solubility limit of the VOCs detected at the site would indicate that a Dense Non-Aqueous Phase Liquid (DNAPL) is not present above the clay layer at this location Based on these readings the well screen for EPxM-2S was set between 70 and 17 feet below grade

ERM-3S had minor detections between 15 and 20 feet below grade of 20 ppm or less ERM-4S had a trace detection at the 50 to 70 foot interval of less than 10 ppm Similarly concentrations of 30 ppm or less were detected between 50 and 12 feet below grade in ERM-5D

The Vermont unofficial unpublished guidelines for soil removal are based on RCPJV landban requirements The general guidance is to multiply the landban concentration by a factor of 20 In the absence of a landban value the MCL multiplied by a factor of 20 should be used For constituents at the site the following guidelines may be applicable

Consituent Remediation Guideline

111-trichloroethane 8200 ppb (landban-based)

trichloroethene 100 ppb (MCL-based)

chloroform 2000 ppb (MCL-based)

11-dichloroethene 140 ppb (MCL-based)

tetrachloroethene 100 ppb ( p r o p o s e d based)

MCL-

11-dichloroethane 1400 ppb (based on VT water quality guideline)

Since these guidelines are chemical-specific laboratory analyses of soil samples are necessary to determine soil remediation levels for the Tansitor site ERM did not submit any soil samples for laboratory analysis during this investigation although prior investigations included soil sampling and analysis in the disposal pit area (Appendix A)

Since a soil excavation or in-situ remediation would not normally extend below the water table the soil removal guidelines do not necessarily apply to samples collected below the water table Saturated contaminated sediments are generally addressed through a ground water remedial action

16 TtK

34 Hydroqeology and Water Quality

In order to assess potential impacts of the Tansitor disposal pit site EKM investigated ground and surface water conditions on and directly downgradient of the site As ground and surface water are interactive an analysis of both systems is necessary to assess potential migration of chemicals

For comparative purposes the Maximum Contaminant Levels (MCLs) used for defining drinking water quality are listed below for those chemicals present at the site

Parameter MCL (ppb)

11-dichloroethane 70 (VT guideline not an MCL) 11-dichloroethene 7 111-trichloroethane 200 trichloroethene 5 tetrachloroethene 5 (proposed MCL) chloroform 100 (total trihalomethanes)

341 Historical Water Quality

An extensive sampling history exists at the site since 1983 Although limited ground water sampling occurred primarily in nearby water supply wells a large volume of surface water quality data exists Unfortunately the surface water sampling locations were never standardized by staking locations in the field Therefore it is difficult to generate trends over time at specific locations The surface water sampling points should be considered approximate locations Appendix B contains a summary of all water samples collected at and near the Tansitor site

In terms of ground water quality results there has never been a detection of volatile organics in any of the residential water supply wells adjacent to the Tansitor site Only one sampling event (January 20 1984) indicated the possible presence of volatiles in the Tansitor tap water Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only detected once it is likely that this detection was a false positive or indicative of laboratory contamination Follow-up sampling to this investigation will address residential well water quality

17 The

Group

342 Surface Water Quality

Surface water quality results from the January 3 1989 event are summarized in Table 2 and historical data appear in Appendix B Sampling locations are shown on Figure 2 As indicated

sample S-3 is located northeast of the firepond

- sample S-7 is located at an outfall of a pipeline originating at the firepond before entering the perennial stream

samples S-ll and S-13 represent upgradient and downgradient locations respectively on the perennial stream south of Route 9 and

- sample S-16 is located at an upgradient point on the intermittent stream north of the facility

Sample S-3 had no detections of VOCs This result is different from past sampling events (Appendix B) where S-3 was the most contaminated of any of the surface water locations After discussions with VTDEC personnel it appears that the location of S-3 has varied in the past Therefore no accurate trends can be determined at this time

VOC concentrations were non-detectable in S-ll S-7 had a total of 142 ppb and S-13 had a total of 24 ppb Based on the location of sampling points it appears that chemicals are entering the stream downgradient of S-ll either from tributary surface water sources or from ground water discharge The Maximum Contaminant Level (MCL) for 11-dichloroethane (11-DCA) has not been defined however the unofficial Vermont drinking water guideline of 70 ppb was not exceeded The MCLs for 11shydichloroethene (11-DCE) and 11 1-trichloroethane (TCA) the other two chemicals detected in S-7 and S-13 were also not exceeded The MCLs are presented here for comparative purposes alone since the stream is not a likely source of drinking water

Sample S-16 collected from the on-site intermittent stream had a concentration of 16615 ppb of total volatiles which exceeds drinking water standards for all constituents detected This concentration may be due to ground water discharge from the slope north of the firepond some of which drains west into the intermittent stream The presence of tetrachloroethene (PCE) at 20 ppb which was not detected anywhere else at the site warrants further investigation in this area

18 The

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343 Ground Water Flow and Direction

Figure 4 shows a water table map across the site Table 3 summarizes the water level data Ground water flow is locally towards the southeast at the site at a gradient of approximately 0065 ftft

Flow Rates

Using the natural range of values below and the modified Darcy equation the average linear velocity for the ground water in the overburden above the clay at the site is probably between 67 ftyr and 0027 ftyr

hydraulic conductivity 10~4 to 10~7 cmsec of till (K) (after Freeze amp Cherry

1979)

hydraulic gradient (i) 0065 ftft (calculated between

ERM-1S and -5S)

effective porosity (n) 10 to 25

v = (Ki)n

Although permeability (K) data were not obtained during this initial investigation a likely value of permeability is 10~4

cmsec with an effective porosity of 20 which would result in an average linear velocity of 34 ftyr for the upper till zone Field permeability testing is warranted to refine this estimate The more compact lower till likely has a lower permeability which would result in a lower average linear velocity which could restrict contaminant transport

In terms of a sensitivity analysis for the above equation velocity and effective porosity are inversely proportional Therefore a larger effective porosity would result in a slower average linear velocity A higher permeability would result in a higher velocity Applying these velocity estimates to contaminant transport must take into account dispersion and retardation effects

Vertical Gradients

At the time that ERM measured the water levels in the monitoring wells water in ERM-5D was frozen in the casing above ground level This is due to a high water level The depth to ice can not be directly correlated to depth to water in this well because of expansion effects however the difference is not

20

tennis courts

S-l 1 1 ntsrml ttsrjlt stream

perannial stream

_EGEND

Surfccs Water Samp1e

fanitor(ng Wei 1

Water Table Elevatlor ~t above MSL)

Water Taole Contours

D1rect1 on of G^ourcwator F 1 ov

SCALE (feet)

bull00 280 300 400

N

ERM i gare 4 New Engona ~c

Tensi tor E i e c ^ r c n i c s Inc

Genera i zed

vater Tao le E eva t ion Map

for Jani^arj 3 1989

WELL

ERM IS

ERM 2S

ERM 3S

ERM 4S

ERM 5S

ERM 5D

Table 3

WATER GAUGING AND SURVEY DATA

MP ELEVATION

ft above MSL

86029

84387

82262

81995

82238

82237

DEPTH TO

WATER

ft below MP

9 10

3 46

160

348

9 00

100

TOTAL DEPTH

ft below MP

1345

1980

1620

17 75

WATER TABLE ELEVATION

ft above MSL

851 19

84041

82102

81647

813 38

82137

All measurements made on January 3 1989 by ERM

Frozen plug prevented measurement Depth to ice

The

Group

likely to exceed a couple of inches The difference in the depth to ice in ERM-5D and the depth to water in ERM-5S is about eight feet This represents a strong upward vertical gradient especially since ERM-5S is screened between 6 and 16 feet below grade and EKM-5D is screened between 27 and 32 feet below grade

Although ERM-5S and -5D are screened in similar strata based on sediment texture the blow counts increased considerably beyond 15 feet below grade indicating a tighter zone as described earlier The increased compaction with depth and the upward vertical gradient would tend to hinder the downward migration of dissolved contaminants in this area Dissolved contaminant flow is probably concentrated in the upper till layer due to these combined factors

Because of the difference in density between water and organic solvents a vertical gradient alone would not prohibit the downward migration of a DNAPL As discussed earlier however there is currently no evidence to indicate the presence of a DNAPL

344 Ground Water Quality

Organics

Table 4 is a summary of volatile organic concentrations in ground water (as determined by the VTDEC laboratory) from the on-site monitoring wells installed by ERM Figure 5 shows the generalized TCA plume at the site Five solvent-related compounds from the EPA Method 624 suite of parameters were identified in the overburden at the site Well ERM-5D was frozen above ground at the time of sampling and therefore no data is available

Of the six compounds detected at the site several are likely breakdown products of the more prevalent contaminants TCA is known to break down abiotically to 11-DCE and through biodegradation to 11-DCA The kinetics of the reactions favor the formation of 11-DCA It is likely that the remaining constituents trichloroethene (TCE) tetrachloroethene (PCE) and chloroform are virgin chemicals

The upgradient and downgradient wells EPJM-1S and -5S both had non-detectable readings of volatile organic chemicals This would indicate that no additional sources of ground water contamination exist upgradient of the disposal pit Although the non-detectable reading in ERM-5S indicates that considerable attenuation of contaminants has occurred between the disposal pit and beyond the fire pond it does not necessarily demonstrate that ERM-5S is the furthest downgradient advance of contaminants in ground water It is possible that the leading edge of contamshy

23 Thlaquo

Group

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wate 1 i no

1 ntsrm 1 tts stream

perennial strsam

Surface Wcw2r~ Sample

N 100

Mom tor irg We I

TCA (ODD) D or nondetsctacia

t Cancentnac

ERM F -e o Sea 1e ( Fee t )

New Erg lard 1nc

00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

30 RESULTS AND DISCUSSION

3 1 Physiography and Regional Geology

The Tansitor site is in the southwestern corner of Vermont (Figure 1) in the Taconic Range This area is in the Hudson River basin The site is at the southern base of Whipstock Hill approximately 35 miles west of the center of Bennington Vermont An unnamed hill lies directly south across the valley

The geology of the vicinity is characterized by an overburden of glacial materials underlain by Walloomsic Slate No bedrock outcrops were observed on site The valley in which Tansitor is located was part of a glacial lake when recessional moraines blocked the valley drainage to the west A glacioshylacustrine clay deposit formed in the lake bottom and was later covered with till The extent of this clay is not well-documented in the literature

It is unclear whether this clay layer is continuous across the valley and whether it would act as an effective barrier to downward migration of contaminants into the bedrock ag_uifer The EPAs Site Inspection report states that the depth to bedrock (slate) at the Severs1 property 600 feet west of the site is 80 feet which if correct would indicate the absence of an effective clay layer at that location However if the wetlands or stream south of Route 9 represent a ground water discharge zone the presence of a limited on-site clay layer could prevent migration of contaminants into the bedrock These issues will be resolved in future investigations

The topographic slope is to the southeast An unnamed perennial stream is located across Route 9 from the site and flows towards the southwest for about 05 miles before entering Browns Brook which flows west about four miles before entering the Hoosic River An intermittent stream begins near the northeastern corner of the main building and joins the perennial stream in the wetland south of the site

3 2 Site Geology

The overburden at the Tansitor site consists of glacial tills and glacio-lacustrine clays Figure 3a shows the location of an on-site cross-section Figure 3b is a generalized cross-section for the site The till matrix is primarily mixed clays and silts with up to 40 percent sand and gravel In general till compaction increases with depth and with an increase in clay content The exact thickness of the overburden is unknown Sorption of contaminants onto the overburden sediments is likely enhanced by the high clay content of the till which could retard the movement of the contaminants

11 The

o o o o o o CO CO rr CJ o CO CO CO CO 00 CO

uea|j

A compact orange silty clay of glacio-lacustrine origin was found in both ERM-2S and ERM-5D at respective depths of 44 and 50 feet below grade (798 and 770 feet above Mean Sea Level) The thickness of this layer is a minimum of seven feet at ERM-5D and a minimum of 18 feet at ERM-2S (both borings were halted before the clays were completely penetrated) The other shallow wells were not advanced deep enough to intercept the clay layer

Within the till layer in ERM-2S and -5D a significant increase in the number of blow counts occurred at 10 and 15 feet respectively This reflects an increase in sediment compaction at these depths Since the sediment texture is the same above and below these intervals it is likely that the upper layer represents disturbed sediments possibly a collapse or slump structure

A lens of gray clay was found between 10 and 12 feet below ground level in ERM-4S The degree to which this may act as an impermeable barrier depends in part on the lateral extent of the clay lens

Both ERM-4S and -5D have seams of fine sand bedded with the silty clays At ERM-2S a three foot diameter boulder was intersected

Bedrock was not encountered in any of the borings Contrary to prior reports bedrock does not appear to outcrop in the immediate vicinity of the disposal pit The only bedrock outcrops observed were on the northern side of Whipstock Hill far upgradient of the site

3 3 Soil Quality

Previous soil sampling by Tansitor in the disposal pit area is described in Appendix A No additional sampling in this area was performed by ERM Results of ERMs field screening of split spoon soil samples are shown in Table 1 As indicated only one sample at the zero to 20 foot depth from the ERM-1S boring had a detection using an HNU meter The reading of 20 ppm could be due to the moisture content of the soil or the presence of VOCs Only laboratory or other more accurate analysis could confirm the presence of VOCs Future soil sampling in the disposal pit area should address this issue

In boring ERM-2S all samples between 50 and 44 feet below grade had detections of volatile organics The highest concentrations in this boring were detected between 50 and 12 feet below ground level (up to 700 ppm) At 44 feet below grade a tight clay was encountered and no volatiles were detected below this point The spoon collected above the clay layer at 40 to 42 feet below grade had a concentration of 50 ppm which is

14

Table 1

Results of Field Screening of Split Spoon Sediments

(ppm)

24 HOUR 24 HOUR

WELL NO DEPTH ON SITE HEADSPACE WELL NO DEPTH ON SITE HEADSPACE

1S 0-2 2 4S 0-2 ND ND

5-7 ND ND 5-7 lt1 ND

10-12 ND ND 10-12 ND ND

15-17 ND ND 15-17 ND ND

18-20 ND ND

2S 0-2 ND

5-7 -shy gt100 5D 0-2 ND

10-12 -shy 700 5-7 -- 3

15-17 -shy 85 10-12 -- 1

20-22 -shy 4 15-17 NO ND

25-27 -shy 6 20-22 ND ND

30-32 -shy 10 25-27 NO ND

325-34 -shy 65 30-32 80 ND

39-40 -shy 30 35-37 ND NO

40-42 -shy 5 40-42 ND ND

45-47 NO ND 45-47 ND NO

50-52 ND ND 50-52 ND NO

55-57 ND ND 55-57 NO ND

60-62 ND

-shy INDICATES THAT NO READING WAS TAKEN

3S 0-2 ND ND

5-7 ND ND ONLY PEAK CONCENTRATIONS ARE LISTED

10-12 ND ND

I | 15-17 I lt1 ND

I | 18-20 I lt1 2

The

significantly below the peak concentrations in the boring This concentration which is far below the solubility limit of the VOCs detected at the site would indicate that a Dense Non-Aqueous Phase Liquid (DNAPL) is not present above the clay layer at this location Based on these readings the well screen for EPxM-2S was set between 70 and 17 feet below grade

ERM-3S had minor detections between 15 and 20 feet below grade of 20 ppm or less ERM-4S had a trace detection at the 50 to 70 foot interval of less than 10 ppm Similarly concentrations of 30 ppm or less were detected between 50 and 12 feet below grade in ERM-5D

The Vermont unofficial unpublished guidelines for soil removal are based on RCPJV landban requirements The general guidance is to multiply the landban concentration by a factor of 20 In the absence of a landban value the MCL multiplied by a factor of 20 should be used For constituents at the site the following guidelines may be applicable

Consituent Remediation Guideline

111-trichloroethane 8200 ppb (landban-based)

trichloroethene 100 ppb (MCL-based)

chloroform 2000 ppb (MCL-based)

11-dichloroethene 140 ppb (MCL-based)

tetrachloroethene 100 ppb ( p r o p o s e d based)

MCL-

11-dichloroethane 1400 ppb (based on VT water quality guideline)

Since these guidelines are chemical-specific laboratory analyses of soil samples are necessary to determine soil remediation levels for the Tansitor site ERM did not submit any soil samples for laboratory analysis during this investigation although prior investigations included soil sampling and analysis in the disposal pit area (Appendix A)

Since a soil excavation or in-situ remediation would not normally extend below the water table the soil removal guidelines do not necessarily apply to samples collected below the water table Saturated contaminated sediments are generally addressed through a ground water remedial action

16 TtK

34 Hydroqeology and Water Quality

In order to assess potential impacts of the Tansitor disposal pit site EKM investigated ground and surface water conditions on and directly downgradient of the site As ground and surface water are interactive an analysis of both systems is necessary to assess potential migration of chemicals

For comparative purposes the Maximum Contaminant Levels (MCLs) used for defining drinking water quality are listed below for those chemicals present at the site

Parameter MCL (ppb)

11-dichloroethane 70 (VT guideline not an MCL) 11-dichloroethene 7 111-trichloroethane 200 trichloroethene 5 tetrachloroethene 5 (proposed MCL) chloroform 100 (total trihalomethanes)

341 Historical Water Quality

An extensive sampling history exists at the site since 1983 Although limited ground water sampling occurred primarily in nearby water supply wells a large volume of surface water quality data exists Unfortunately the surface water sampling locations were never standardized by staking locations in the field Therefore it is difficult to generate trends over time at specific locations The surface water sampling points should be considered approximate locations Appendix B contains a summary of all water samples collected at and near the Tansitor site

In terms of ground water quality results there has never been a detection of volatile organics in any of the residential water supply wells adjacent to the Tansitor site Only one sampling event (January 20 1984) indicated the possible presence of volatiles in the Tansitor tap water Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only detected once it is likely that this detection was a false positive or indicative of laboratory contamination Follow-up sampling to this investigation will address residential well water quality

17 The

Group

342 Surface Water Quality

Surface water quality results from the January 3 1989 event are summarized in Table 2 and historical data appear in Appendix B Sampling locations are shown on Figure 2 As indicated

sample S-3 is located northeast of the firepond

- sample S-7 is located at an outfall of a pipeline originating at the firepond before entering the perennial stream

samples S-ll and S-13 represent upgradient and downgradient locations respectively on the perennial stream south of Route 9 and

- sample S-16 is located at an upgradient point on the intermittent stream north of the facility

Sample S-3 had no detections of VOCs This result is different from past sampling events (Appendix B) where S-3 was the most contaminated of any of the surface water locations After discussions with VTDEC personnel it appears that the location of S-3 has varied in the past Therefore no accurate trends can be determined at this time

VOC concentrations were non-detectable in S-ll S-7 had a total of 142 ppb and S-13 had a total of 24 ppb Based on the location of sampling points it appears that chemicals are entering the stream downgradient of S-ll either from tributary surface water sources or from ground water discharge The Maximum Contaminant Level (MCL) for 11-dichloroethane (11-DCA) has not been defined however the unofficial Vermont drinking water guideline of 70 ppb was not exceeded The MCLs for 11shydichloroethene (11-DCE) and 11 1-trichloroethane (TCA) the other two chemicals detected in S-7 and S-13 were also not exceeded The MCLs are presented here for comparative purposes alone since the stream is not a likely source of drinking water

Sample S-16 collected from the on-site intermittent stream had a concentration of 16615 ppb of total volatiles which exceeds drinking water standards for all constituents detected This concentration may be due to ground water discharge from the slope north of the firepond some of which drains west into the intermittent stream The presence of tetrachloroethene (PCE) at 20 ppb which was not detected anywhere else at the site warrants further investigation in this area

18 The

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343 Ground Water Flow and Direction

Figure 4 shows a water table map across the site Table 3 summarizes the water level data Ground water flow is locally towards the southeast at the site at a gradient of approximately 0065 ftft

Flow Rates

Using the natural range of values below and the modified Darcy equation the average linear velocity for the ground water in the overburden above the clay at the site is probably between 67 ftyr and 0027 ftyr

hydraulic conductivity 10~4 to 10~7 cmsec of till (K) (after Freeze amp Cherry

1979)

hydraulic gradient (i) 0065 ftft (calculated between

ERM-1S and -5S)

effective porosity (n) 10 to 25

v = (Ki)n

Although permeability (K) data were not obtained during this initial investigation a likely value of permeability is 10~4

cmsec with an effective porosity of 20 which would result in an average linear velocity of 34 ftyr for the upper till zone Field permeability testing is warranted to refine this estimate The more compact lower till likely has a lower permeability which would result in a lower average linear velocity which could restrict contaminant transport

In terms of a sensitivity analysis for the above equation velocity and effective porosity are inversely proportional Therefore a larger effective porosity would result in a slower average linear velocity A higher permeability would result in a higher velocity Applying these velocity estimates to contaminant transport must take into account dispersion and retardation effects

Vertical Gradients

At the time that ERM measured the water levels in the monitoring wells water in ERM-5D was frozen in the casing above ground level This is due to a high water level The depth to ice can not be directly correlated to depth to water in this well because of expansion effects however the difference is not

20

tennis courts

S-l 1 1 ntsrml ttsrjlt stream

perannial stream

_EGEND

Surfccs Water Samp1e

fanitor(ng Wei 1

Water Table Elevatlor ~t above MSL)

Water Taole Contours

D1rect1 on of G^ourcwator F 1 ov

SCALE (feet)

bull00 280 300 400

N

ERM i gare 4 New Engona ~c

Tensi tor E i e c ^ r c n i c s Inc

Genera i zed

vater Tao le E eva t ion Map

for Jani^arj 3 1989

WELL

ERM IS

ERM 2S

ERM 3S

ERM 4S

ERM 5S

ERM 5D

Table 3

WATER GAUGING AND SURVEY DATA

MP ELEVATION

ft above MSL

86029

84387

82262

81995

82238

82237

DEPTH TO

WATER

ft below MP

9 10

3 46

160

348

9 00

100

TOTAL DEPTH

ft below MP

1345

1980

1620

17 75

WATER TABLE ELEVATION

ft above MSL

851 19

84041

82102

81647

813 38

82137

All measurements made on January 3 1989 by ERM

Frozen plug prevented measurement Depth to ice

The

Group

likely to exceed a couple of inches The difference in the depth to ice in ERM-5D and the depth to water in ERM-5S is about eight feet This represents a strong upward vertical gradient especially since ERM-5S is screened between 6 and 16 feet below grade and EKM-5D is screened between 27 and 32 feet below grade

Although ERM-5S and -5D are screened in similar strata based on sediment texture the blow counts increased considerably beyond 15 feet below grade indicating a tighter zone as described earlier The increased compaction with depth and the upward vertical gradient would tend to hinder the downward migration of dissolved contaminants in this area Dissolved contaminant flow is probably concentrated in the upper till layer due to these combined factors

Because of the difference in density between water and organic solvents a vertical gradient alone would not prohibit the downward migration of a DNAPL As discussed earlier however there is currently no evidence to indicate the presence of a DNAPL

344 Ground Water Quality

Organics

Table 4 is a summary of volatile organic concentrations in ground water (as determined by the VTDEC laboratory) from the on-site monitoring wells installed by ERM Figure 5 shows the generalized TCA plume at the site Five solvent-related compounds from the EPA Method 624 suite of parameters were identified in the overburden at the site Well ERM-5D was frozen above ground at the time of sampling and therefore no data is available

Of the six compounds detected at the site several are likely breakdown products of the more prevalent contaminants TCA is known to break down abiotically to 11-DCE and through biodegradation to 11-DCA The kinetics of the reactions favor the formation of 11-DCA It is likely that the remaining constituents trichloroethene (TCE) tetrachloroethene (PCE) and chloroform are virgin chemicals

The upgradient and downgradient wells EPJM-1S and -5S both had non-detectable readings of volatile organic chemicals This would indicate that no additional sources of ground water contamination exist upgradient of the disposal pit Although the non-detectable reading in ERM-5S indicates that considerable attenuation of contaminants has occurred between the disposal pit and beyond the fire pond it does not necessarily demonstrate that ERM-5S is the furthest downgradient advance of contaminants in ground water It is possible that the leading edge of contamshy

23 Thlaquo

Group

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Surface Wcw2r~ Sample

N 100

Mom tor irg We I

TCA (ODD) D or nondetsctacia

t Cancentnac

ERM F -e o Sea 1e ( Fee t )

New Erg lard 1nc

00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

o o o o o o CO CO rr CJ o CO CO CO CO 00 CO

uea|j

A compact orange silty clay of glacio-lacustrine origin was found in both ERM-2S and ERM-5D at respective depths of 44 and 50 feet below grade (798 and 770 feet above Mean Sea Level) The thickness of this layer is a minimum of seven feet at ERM-5D and a minimum of 18 feet at ERM-2S (both borings were halted before the clays were completely penetrated) The other shallow wells were not advanced deep enough to intercept the clay layer

Within the till layer in ERM-2S and -5D a significant increase in the number of blow counts occurred at 10 and 15 feet respectively This reflects an increase in sediment compaction at these depths Since the sediment texture is the same above and below these intervals it is likely that the upper layer represents disturbed sediments possibly a collapse or slump structure

A lens of gray clay was found between 10 and 12 feet below ground level in ERM-4S The degree to which this may act as an impermeable barrier depends in part on the lateral extent of the clay lens

Both ERM-4S and -5D have seams of fine sand bedded with the silty clays At ERM-2S a three foot diameter boulder was intersected

Bedrock was not encountered in any of the borings Contrary to prior reports bedrock does not appear to outcrop in the immediate vicinity of the disposal pit The only bedrock outcrops observed were on the northern side of Whipstock Hill far upgradient of the site

3 3 Soil Quality

Previous soil sampling by Tansitor in the disposal pit area is described in Appendix A No additional sampling in this area was performed by ERM Results of ERMs field screening of split spoon soil samples are shown in Table 1 As indicated only one sample at the zero to 20 foot depth from the ERM-1S boring had a detection using an HNU meter The reading of 20 ppm could be due to the moisture content of the soil or the presence of VOCs Only laboratory or other more accurate analysis could confirm the presence of VOCs Future soil sampling in the disposal pit area should address this issue

In boring ERM-2S all samples between 50 and 44 feet below grade had detections of volatile organics The highest concentrations in this boring were detected between 50 and 12 feet below ground level (up to 700 ppm) At 44 feet below grade a tight clay was encountered and no volatiles were detected below this point The spoon collected above the clay layer at 40 to 42 feet below grade had a concentration of 50 ppm which is

14

Table 1

Results of Field Screening of Split Spoon Sediments

(ppm)

24 HOUR 24 HOUR

WELL NO DEPTH ON SITE HEADSPACE WELL NO DEPTH ON SITE HEADSPACE

1S 0-2 2 4S 0-2 ND ND

5-7 ND ND 5-7 lt1 ND

10-12 ND ND 10-12 ND ND

15-17 ND ND 15-17 ND ND

18-20 ND ND

2S 0-2 ND

5-7 -shy gt100 5D 0-2 ND

10-12 -shy 700 5-7 -- 3

15-17 -shy 85 10-12 -- 1

20-22 -shy 4 15-17 NO ND

25-27 -shy 6 20-22 ND ND

30-32 -shy 10 25-27 NO ND

325-34 -shy 65 30-32 80 ND

39-40 -shy 30 35-37 ND NO

40-42 -shy 5 40-42 ND ND

45-47 NO ND 45-47 ND NO

50-52 ND ND 50-52 ND NO

55-57 ND ND 55-57 NO ND

60-62 ND

-shy INDICATES THAT NO READING WAS TAKEN

3S 0-2 ND ND

5-7 ND ND ONLY PEAK CONCENTRATIONS ARE LISTED

10-12 ND ND

I | 15-17 I lt1 ND

I | 18-20 I lt1 2

The

significantly below the peak concentrations in the boring This concentration which is far below the solubility limit of the VOCs detected at the site would indicate that a Dense Non-Aqueous Phase Liquid (DNAPL) is not present above the clay layer at this location Based on these readings the well screen for EPxM-2S was set between 70 and 17 feet below grade

ERM-3S had minor detections between 15 and 20 feet below grade of 20 ppm or less ERM-4S had a trace detection at the 50 to 70 foot interval of less than 10 ppm Similarly concentrations of 30 ppm or less were detected between 50 and 12 feet below grade in ERM-5D

The Vermont unofficial unpublished guidelines for soil removal are based on RCPJV landban requirements The general guidance is to multiply the landban concentration by a factor of 20 In the absence of a landban value the MCL multiplied by a factor of 20 should be used For constituents at the site the following guidelines may be applicable

Consituent Remediation Guideline

111-trichloroethane 8200 ppb (landban-based)

trichloroethene 100 ppb (MCL-based)

chloroform 2000 ppb (MCL-based)

11-dichloroethene 140 ppb (MCL-based)

tetrachloroethene 100 ppb ( p r o p o s e d based)

MCL-

11-dichloroethane 1400 ppb (based on VT water quality guideline)

Since these guidelines are chemical-specific laboratory analyses of soil samples are necessary to determine soil remediation levels for the Tansitor site ERM did not submit any soil samples for laboratory analysis during this investigation although prior investigations included soil sampling and analysis in the disposal pit area (Appendix A)

Since a soil excavation or in-situ remediation would not normally extend below the water table the soil removal guidelines do not necessarily apply to samples collected below the water table Saturated contaminated sediments are generally addressed through a ground water remedial action

16 TtK

34 Hydroqeology and Water Quality

In order to assess potential impacts of the Tansitor disposal pit site EKM investigated ground and surface water conditions on and directly downgradient of the site As ground and surface water are interactive an analysis of both systems is necessary to assess potential migration of chemicals

For comparative purposes the Maximum Contaminant Levels (MCLs) used for defining drinking water quality are listed below for those chemicals present at the site

Parameter MCL (ppb)

11-dichloroethane 70 (VT guideline not an MCL) 11-dichloroethene 7 111-trichloroethane 200 trichloroethene 5 tetrachloroethene 5 (proposed MCL) chloroform 100 (total trihalomethanes)

341 Historical Water Quality

An extensive sampling history exists at the site since 1983 Although limited ground water sampling occurred primarily in nearby water supply wells a large volume of surface water quality data exists Unfortunately the surface water sampling locations were never standardized by staking locations in the field Therefore it is difficult to generate trends over time at specific locations The surface water sampling points should be considered approximate locations Appendix B contains a summary of all water samples collected at and near the Tansitor site

In terms of ground water quality results there has never been a detection of volatile organics in any of the residential water supply wells adjacent to the Tansitor site Only one sampling event (January 20 1984) indicated the possible presence of volatiles in the Tansitor tap water Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only detected once it is likely that this detection was a false positive or indicative of laboratory contamination Follow-up sampling to this investigation will address residential well water quality

17 The

Group

342 Surface Water Quality

Surface water quality results from the January 3 1989 event are summarized in Table 2 and historical data appear in Appendix B Sampling locations are shown on Figure 2 As indicated

sample S-3 is located northeast of the firepond

- sample S-7 is located at an outfall of a pipeline originating at the firepond before entering the perennial stream

samples S-ll and S-13 represent upgradient and downgradient locations respectively on the perennial stream south of Route 9 and

- sample S-16 is located at an upgradient point on the intermittent stream north of the facility

Sample S-3 had no detections of VOCs This result is different from past sampling events (Appendix B) where S-3 was the most contaminated of any of the surface water locations After discussions with VTDEC personnel it appears that the location of S-3 has varied in the past Therefore no accurate trends can be determined at this time

VOC concentrations were non-detectable in S-ll S-7 had a total of 142 ppb and S-13 had a total of 24 ppb Based on the location of sampling points it appears that chemicals are entering the stream downgradient of S-ll either from tributary surface water sources or from ground water discharge The Maximum Contaminant Level (MCL) for 11-dichloroethane (11-DCA) has not been defined however the unofficial Vermont drinking water guideline of 70 ppb was not exceeded The MCLs for 11shydichloroethene (11-DCE) and 11 1-trichloroethane (TCA) the other two chemicals detected in S-7 and S-13 were also not exceeded The MCLs are presented here for comparative purposes alone since the stream is not a likely source of drinking water

Sample S-16 collected from the on-site intermittent stream had a concentration of 16615 ppb of total volatiles which exceeds drinking water standards for all constituents detected This concentration may be due to ground water discharge from the slope north of the firepond some of which drains west into the intermittent stream The presence of tetrachloroethene (PCE) at 20 ppb which was not detected anywhere else at the site warrants further investigation in this area

18 The

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343 Ground Water Flow and Direction

Figure 4 shows a water table map across the site Table 3 summarizes the water level data Ground water flow is locally towards the southeast at the site at a gradient of approximately 0065 ftft

Flow Rates

Using the natural range of values below and the modified Darcy equation the average linear velocity for the ground water in the overburden above the clay at the site is probably between 67 ftyr and 0027 ftyr

hydraulic conductivity 10~4 to 10~7 cmsec of till (K) (after Freeze amp Cherry

1979)

hydraulic gradient (i) 0065 ftft (calculated between

ERM-1S and -5S)

effective porosity (n) 10 to 25

v = (Ki)n

Although permeability (K) data were not obtained during this initial investigation a likely value of permeability is 10~4

cmsec with an effective porosity of 20 which would result in an average linear velocity of 34 ftyr for the upper till zone Field permeability testing is warranted to refine this estimate The more compact lower till likely has a lower permeability which would result in a lower average linear velocity which could restrict contaminant transport

In terms of a sensitivity analysis for the above equation velocity and effective porosity are inversely proportional Therefore a larger effective porosity would result in a slower average linear velocity A higher permeability would result in a higher velocity Applying these velocity estimates to contaminant transport must take into account dispersion and retardation effects

Vertical Gradients

At the time that ERM measured the water levels in the monitoring wells water in ERM-5D was frozen in the casing above ground level This is due to a high water level The depth to ice can not be directly correlated to depth to water in this well because of expansion effects however the difference is not

20

tennis courts

S-l 1 1 ntsrml ttsrjlt stream

perannial stream

_EGEND

Surfccs Water Samp1e

fanitor(ng Wei 1

Water Table Elevatlor ~t above MSL)

Water Taole Contours

D1rect1 on of G^ourcwator F 1 ov

SCALE (feet)

bull00 280 300 400

N

ERM i gare 4 New Engona ~c

Tensi tor E i e c ^ r c n i c s Inc

Genera i zed

vater Tao le E eva t ion Map

for Jani^arj 3 1989

WELL

ERM IS

ERM 2S

ERM 3S

ERM 4S

ERM 5S

ERM 5D

Table 3

WATER GAUGING AND SURVEY DATA

MP ELEVATION

ft above MSL

86029

84387

82262

81995

82238

82237

DEPTH TO

WATER

ft below MP

9 10

3 46

160

348

9 00

100

TOTAL DEPTH

ft below MP

1345

1980

1620

17 75

WATER TABLE ELEVATION

ft above MSL

851 19

84041

82102

81647

813 38

82137

All measurements made on January 3 1989 by ERM

Frozen plug prevented measurement Depth to ice

The

Group

likely to exceed a couple of inches The difference in the depth to ice in ERM-5D and the depth to water in ERM-5S is about eight feet This represents a strong upward vertical gradient especially since ERM-5S is screened between 6 and 16 feet below grade and EKM-5D is screened between 27 and 32 feet below grade

Although ERM-5S and -5D are screened in similar strata based on sediment texture the blow counts increased considerably beyond 15 feet below grade indicating a tighter zone as described earlier The increased compaction with depth and the upward vertical gradient would tend to hinder the downward migration of dissolved contaminants in this area Dissolved contaminant flow is probably concentrated in the upper till layer due to these combined factors

Because of the difference in density between water and organic solvents a vertical gradient alone would not prohibit the downward migration of a DNAPL As discussed earlier however there is currently no evidence to indicate the presence of a DNAPL

344 Ground Water Quality

Organics

Table 4 is a summary of volatile organic concentrations in ground water (as determined by the VTDEC laboratory) from the on-site monitoring wells installed by ERM Figure 5 shows the generalized TCA plume at the site Five solvent-related compounds from the EPA Method 624 suite of parameters were identified in the overburden at the site Well ERM-5D was frozen above ground at the time of sampling and therefore no data is available

Of the six compounds detected at the site several are likely breakdown products of the more prevalent contaminants TCA is known to break down abiotically to 11-DCE and through biodegradation to 11-DCA The kinetics of the reactions favor the formation of 11-DCA It is likely that the remaining constituents trichloroethene (TCE) tetrachloroethene (PCE) and chloroform are virgin chemicals

The upgradient and downgradient wells EPJM-1S and -5S both had non-detectable readings of volatile organic chemicals This would indicate that no additional sources of ground water contamination exist upgradient of the disposal pit Although the non-detectable reading in ERM-5S indicates that considerable attenuation of contaminants has occurred between the disposal pit and beyond the fire pond it does not necessarily demonstrate that ERM-5S is the furthest downgradient advance of contaminants in ground water It is possible that the leading edge of contamshy

23 Thlaquo

Group

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CO

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o o P O ltH rH (H EH EH tlaquo C gt CO lt

Ths

wate 1 i no

1 ntsrm 1 tts stream

perennial strsam

Surface Wcw2r~ Sample

N 100

Mom tor irg We I

TCA (ODD) D or nondetsctacia

t Cancentnac

ERM F -e o Sea 1e ( Fee t )

New Erg lard 1nc

00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

A compact orange silty clay of glacio-lacustrine origin was found in both ERM-2S and ERM-5D at respective depths of 44 and 50 feet below grade (798 and 770 feet above Mean Sea Level) The thickness of this layer is a minimum of seven feet at ERM-5D and a minimum of 18 feet at ERM-2S (both borings were halted before the clays were completely penetrated) The other shallow wells were not advanced deep enough to intercept the clay layer

Within the till layer in ERM-2S and -5D a significant increase in the number of blow counts occurred at 10 and 15 feet respectively This reflects an increase in sediment compaction at these depths Since the sediment texture is the same above and below these intervals it is likely that the upper layer represents disturbed sediments possibly a collapse or slump structure

A lens of gray clay was found between 10 and 12 feet below ground level in ERM-4S The degree to which this may act as an impermeable barrier depends in part on the lateral extent of the clay lens

Both ERM-4S and -5D have seams of fine sand bedded with the silty clays At ERM-2S a three foot diameter boulder was intersected

Bedrock was not encountered in any of the borings Contrary to prior reports bedrock does not appear to outcrop in the immediate vicinity of the disposal pit The only bedrock outcrops observed were on the northern side of Whipstock Hill far upgradient of the site

3 3 Soil Quality

Previous soil sampling by Tansitor in the disposal pit area is described in Appendix A No additional sampling in this area was performed by ERM Results of ERMs field screening of split spoon soil samples are shown in Table 1 As indicated only one sample at the zero to 20 foot depth from the ERM-1S boring had a detection using an HNU meter The reading of 20 ppm could be due to the moisture content of the soil or the presence of VOCs Only laboratory or other more accurate analysis could confirm the presence of VOCs Future soil sampling in the disposal pit area should address this issue

In boring ERM-2S all samples between 50 and 44 feet below grade had detections of volatile organics The highest concentrations in this boring were detected between 50 and 12 feet below ground level (up to 700 ppm) At 44 feet below grade a tight clay was encountered and no volatiles were detected below this point The spoon collected above the clay layer at 40 to 42 feet below grade had a concentration of 50 ppm which is

14

Table 1

Results of Field Screening of Split Spoon Sediments

(ppm)

24 HOUR 24 HOUR

WELL NO DEPTH ON SITE HEADSPACE WELL NO DEPTH ON SITE HEADSPACE

1S 0-2 2 4S 0-2 ND ND

5-7 ND ND 5-7 lt1 ND

10-12 ND ND 10-12 ND ND

15-17 ND ND 15-17 ND ND

18-20 ND ND

2S 0-2 ND

5-7 -shy gt100 5D 0-2 ND

10-12 -shy 700 5-7 -- 3

15-17 -shy 85 10-12 -- 1

20-22 -shy 4 15-17 NO ND

25-27 -shy 6 20-22 ND ND

30-32 -shy 10 25-27 NO ND

325-34 -shy 65 30-32 80 ND

39-40 -shy 30 35-37 ND NO

40-42 -shy 5 40-42 ND ND

45-47 NO ND 45-47 ND NO

50-52 ND ND 50-52 ND NO

55-57 ND ND 55-57 NO ND

60-62 ND

-shy INDICATES THAT NO READING WAS TAKEN

3S 0-2 ND ND

5-7 ND ND ONLY PEAK CONCENTRATIONS ARE LISTED

10-12 ND ND

I | 15-17 I lt1 ND

I | 18-20 I lt1 2

The

significantly below the peak concentrations in the boring This concentration which is far below the solubility limit of the VOCs detected at the site would indicate that a Dense Non-Aqueous Phase Liquid (DNAPL) is not present above the clay layer at this location Based on these readings the well screen for EPxM-2S was set between 70 and 17 feet below grade

ERM-3S had minor detections between 15 and 20 feet below grade of 20 ppm or less ERM-4S had a trace detection at the 50 to 70 foot interval of less than 10 ppm Similarly concentrations of 30 ppm or less were detected between 50 and 12 feet below grade in ERM-5D

The Vermont unofficial unpublished guidelines for soil removal are based on RCPJV landban requirements The general guidance is to multiply the landban concentration by a factor of 20 In the absence of a landban value the MCL multiplied by a factor of 20 should be used For constituents at the site the following guidelines may be applicable

Consituent Remediation Guideline

111-trichloroethane 8200 ppb (landban-based)

trichloroethene 100 ppb (MCL-based)

chloroform 2000 ppb (MCL-based)

11-dichloroethene 140 ppb (MCL-based)

tetrachloroethene 100 ppb ( p r o p o s e d based)

MCL-

11-dichloroethane 1400 ppb (based on VT water quality guideline)

Since these guidelines are chemical-specific laboratory analyses of soil samples are necessary to determine soil remediation levels for the Tansitor site ERM did not submit any soil samples for laboratory analysis during this investigation although prior investigations included soil sampling and analysis in the disposal pit area (Appendix A)

Since a soil excavation or in-situ remediation would not normally extend below the water table the soil removal guidelines do not necessarily apply to samples collected below the water table Saturated contaminated sediments are generally addressed through a ground water remedial action

16 TtK

34 Hydroqeology and Water Quality

In order to assess potential impacts of the Tansitor disposal pit site EKM investigated ground and surface water conditions on and directly downgradient of the site As ground and surface water are interactive an analysis of both systems is necessary to assess potential migration of chemicals

For comparative purposes the Maximum Contaminant Levels (MCLs) used for defining drinking water quality are listed below for those chemicals present at the site

Parameter MCL (ppb)

11-dichloroethane 70 (VT guideline not an MCL) 11-dichloroethene 7 111-trichloroethane 200 trichloroethene 5 tetrachloroethene 5 (proposed MCL) chloroform 100 (total trihalomethanes)

341 Historical Water Quality

An extensive sampling history exists at the site since 1983 Although limited ground water sampling occurred primarily in nearby water supply wells a large volume of surface water quality data exists Unfortunately the surface water sampling locations were never standardized by staking locations in the field Therefore it is difficult to generate trends over time at specific locations The surface water sampling points should be considered approximate locations Appendix B contains a summary of all water samples collected at and near the Tansitor site

In terms of ground water quality results there has never been a detection of volatile organics in any of the residential water supply wells adjacent to the Tansitor site Only one sampling event (January 20 1984) indicated the possible presence of volatiles in the Tansitor tap water Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only detected once it is likely that this detection was a false positive or indicative of laboratory contamination Follow-up sampling to this investigation will address residential well water quality

17 The

Group

342 Surface Water Quality

Surface water quality results from the January 3 1989 event are summarized in Table 2 and historical data appear in Appendix B Sampling locations are shown on Figure 2 As indicated

sample S-3 is located northeast of the firepond

- sample S-7 is located at an outfall of a pipeline originating at the firepond before entering the perennial stream

samples S-ll and S-13 represent upgradient and downgradient locations respectively on the perennial stream south of Route 9 and

- sample S-16 is located at an upgradient point on the intermittent stream north of the facility

Sample S-3 had no detections of VOCs This result is different from past sampling events (Appendix B) where S-3 was the most contaminated of any of the surface water locations After discussions with VTDEC personnel it appears that the location of S-3 has varied in the past Therefore no accurate trends can be determined at this time

VOC concentrations were non-detectable in S-ll S-7 had a total of 142 ppb and S-13 had a total of 24 ppb Based on the location of sampling points it appears that chemicals are entering the stream downgradient of S-ll either from tributary surface water sources or from ground water discharge The Maximum Contaminant Level (MCL) for 11-dichloroethane (11-DCA) has not been defined however the unofficial Vermont drinking water guideline of 70 ppb was not exceeded The MCLs for 11shydichloroethene (11-DCE) and 11 1-trichloroethane (TCA) the other two chemicals detected in S-7 and S-13 were also not exceeded The MCLs are presented here for comparative purposes alone since the stream is not a likely source of drinking water

Sample S-16 collected from the on-site intermittent stream had a concentration of 16615 ppb of total volatiles which exceeds drinking water standards for all constituents detected This concentration may be due to ground water discharge from the slope north of the firepond some of which drains west into the intermittent stream The presence of tetrachloroethene (PCE) at 20 ppb which was not detected anywhere else at the site warrants further investigation in this area

18 The

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343 Ground Water Flow and Direction

Figure 4 shows a water table map across the site Table 3 summarizes the water level data Ground water flow is locally towards the southeast at the site at a gradient of approximately 0065 ftft

Flow Rates

Using the natural range of values below and the modified Darcy equation the average linear velocity for the ground water in the overburden above the clay at the site is probably between 67 ftyr and 0027 ftyr

hydraulic conductivity 10~4 to 10~7 cmsec of till (K) (after Freeze amp Cherry

1979)

hydraulic gradient (i) 0065 ftft (calculated between

ERM-1S and -5S)

effective porosity (n) 10 to 25

v = (Ki)n

Although permeability (K) data were not obtained during this initial investigation a likely value of permeability is 10~4

cmsec with an effective porosity of 20 which would result in an average linear velocity of 34 ftyr for the upper till zone Field permeability testing is warranted to refine this estimate The more compact lower till likely has a lower permeability which would result in a lower average linear velocity which could restrict contaminant transport

In terms of a sensitivity analysis for the above equation velocity and effective porosity are inversely proportional Therefore a larger effective porosity would result in a slower average linear velocity A higher permeability would result in a higher velocity Applying these velocity estimates to contaminant transport must take into account dispersion and retardation effects

Vertical Gradients

At the time that ERM measured the water levels in the monitoring wells water in ERM-5D was frozen in the casing above ground level This is due to a high water level The depth to ice can not be directly correlated to depth to water in this well because of expansion effects however the difference is not

20

tennis courts

S-l 1 1 ntsrml ttsrjlt stream

perannial stream

_EGEND

Surfccs Water Samp1e

fanitor(ng Wei 1

Water Table Elevatlor ~t above MSL)

Water Taole Contours

D1rect1 on of G^ourcwator F 1 ov

SCALE (feet)

bull00 280 300 400

N

ERM i gare 4 New Engona ~c

Tensi tor E i e c ^ r c n i c s Inc

Genera i zed

vater Tao le E eva t ion Map

for Jani^arj 3 1989

WELL

ERM IS

ERM 2S

ERM 3S

ERM 4S

ERM 5S

ERM 5D

Table 3

WATER GAUGING AND SURVEY DATA

MP ELEVATION

ft above MSL

86029

84387

82262

81995

82238

82237

DEPTH TO

WATER

ft below MP

9 10

3 46

160

348

9 00

100

TOTAL DEPTH

ft below MP

1345

1980

1620

17 75

WATER TABLE ELEVATION

ft above MSL

851 19

84041

82102

81647

813 38

82137

All measurements made on January 3 1989 by ERM

Frozen plug prevented measurement Depth to ice

The

Group

likely to exceed a couple of inches The difference in the depth to ice in ERM-5D and the depth to water in ERM-5S is about eight feet This represents a strong upward vertical gradient especially since ERM-5S is screened between 6 and 16 feet below grade and EKM-5D is screened between 27 and 32 feet below grade

Although ERM-5S and -5D are screened in similar strata based on sediment texture the blow counts increased considerably beyond 15 feet below grade indicating a tighter zone as described earlier The increased compaction with depth and the upward vertical gradient would tend to hinder the downward migration of dissolved contaminants in this area Dissolved contaminant flow is probably concentrated in the upper till layer due to these combined factors

Because of the difference in density between water and organic solvents a vertical gradient alone would not prohibit the downward migration of a DNAPL As discussed earlier however there is currently no evidence to indicate the presence of a DNAPL

344 Ground Water Quality

Organics

Table 4 is a summary of volatile organic concentrations in ground water (as determined by the VTDEC laboratory) from the on-site monitoring wells installed by ERM Figure 5 shows the generalized TCA plume at the site Five solvent-related compounds from the EPA Method 624 suite of parameters were identified in the overburden at the site Well ERM-5D was frozen above ground at the time of sampling and therefore no data is available

Of the six compounds detected at the site several are likely breakdown products of the more prevalent contaminants TCA is known to break down abiotically to 11-DCE and through biodegradation to 11-DCA The kinetics of the reactions favor the formation of 11-DCA It is likely that the remaining constituents trichloroethene (TCE) tetrachloroethene (PCE) and chloroform are virgin chemicals

The upgradient and downgradient wells EPJM-1S and -5S both had non-detectable readings of volatile organic chemicals This would indicate that no additional sources of ground water contamination exist upgradient of the disposal pit Although the non-detectable reading in ERM-5S indicates that considerable attenuation of contaminants has occurred between the disposal pit and beyond the fire pond it does not necessarily demonstrate that ERM-5S is the furthest downgradient advance of contaminants in ground water It is possible that the leading edge of contamshy

23 Thlaquo

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Ths

wate 1 i no

1 ntsrm 1 tts stream

perennial strsam

Surface Wcw2r~ Sample

N 100

Mom tor irg We I

TCA (ODD) D or nondetsctacia

t Cancentnac

ERM F -e o Sea 1e ( Fee t )

New Erg lard 1nc

00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

Table 1

Results of Field Screening of Split Spoon Sediments

(ppm)

24 HOUR 24 HOUR

WELL NO DEPTH ON SITE HEADSPACE WELL NO DEPTH ON SITE HEADSPACE

1S 0-2 2 4S 0-2 ND ND

5-7 ND ND 5-7 lt1 ND

10-12 ND ND 10-12 ND ND

15-17 ND ND 15-17 ND ND

18-20 ND ND

2S 0-2 ND

5-7 -shy gt100 5D 0-2 ND

10-12 -shy 700 5-7 -- 3

15-17 -shy 85 10-12 -- 1

20-22 -shy 4 15-17 NO ND

25-27 -shy 6 20-22 ND ND

30-32 -shy 10 25-27 NO ND

325-34 -shy 65 30-32 80 ND

39-40 -shy 30 35-37 ND NO

40-42 -shy 5 40-42 ND ND

45-47 NO ND 45-47 ND NO

50-52 ND ND 50-52 ND NO

55-57 ND ND 55-57 NO ND

60-62 ND

-shy INDICATES THAT NO READING WAS TAKEN

3S 0-2 ND ND

5-7 ND ND ONLY PEAK CONCENTRATIONS ARE LISTED

10-12 ND ND

I | 15-17 I lt1 ND

I | 18-20 I lt1 2

The

significantly below the peak concentrations in the boring This concentration which is far below the solubility limit of the VOCs detected at the site would indicate that a Dense Non-Aqueous Phase Liquid (DNAPL) is not present above the clay layer at this location Based on these readings the well screen for EPxM-2S was set between 70 and 17 feet below grade

ERM-3S had minor detections between 15 and 20 feet below grade of 20 ppm or less ERM-4S had a trace detection at the 50 to 70 foot interval of less than 10 ppm Similarly concentrations of 30 ppm or less were detected between 50 and 12 feet below grade in ERM-5D

The Vermont unofficial unpublished guidelines for soil removal are based on RCPJV landban requirements The general guidance is to multiply the landban concentration by a factor of 20 In the absence of a landban value the MCL multiplied by a factor of 20 should be used For constituents at the site the following guidelines may be applicable

Consituent Remediation Guideline

111-trichloroethane 8200 ppb (landban-based)

trichloroethene 100 ppb (MCL-based)

chloroform 2000 ppb (MCL-based)

11-dichloroethene 140 ppb (MCL-based)

tetrachloroethene 100 ppb ( p r o p o s e d based)

MCL-

11-dichloroethane 1400 ppb (based on VT water quality guideline)

Since these guidelines are chemical-specific laboratory analyses of soil samples are necessary to determine soil remediation levels for the Tansitor site ERM did not submit any soil samples for laboratory analysis during this investigation although prior investigations included soil sampling and analysis in the disposal pit area (Appendix A)

Since a soil excavation or in-situ remediation would not normally extend below the water table the soil removal guidelines do not necessarily apply to samples collected below the water table Saturated contaminated sediments are generally addressed through a ground water remedial action

16 TtK

34 Hydroqeology and Water Quality

In order to assess potential impacts of the Tansitor disposal pit site EKM investigated ground and surface water conditions on and directly downgradient of the site As ground and surface water are interactive an analysis of both systems is necessary to assess potential migration of chemicals

For comparative purposes the Maximum Contaminant Levels (MCLs) used for defining drinking water quality are listed below for those chemicals present at the site

Parameter MCL (ppb)

11-dichloroethane 70 (VT guideline not an MCL) 11-dichloroethene 7 111-trichloroethane 200 trichloroethene 5 tetrachloroethene 5 (proposed MCL) chloroform 100 (total trihalomethanes)

341 Historical Water Quality

An extensive sampling history exists at the site since 1983 Although limited ground water sampling occurred primarily in nearby water supply wells a large volume of surface water quality data exists Unfortunately the surface water sampling locations were never standardized by staking locations in the field Therefore it is difficult to generate trends over time at specific locations The surface water sampling points should be considered approximate locations Appendix B contains a summary of all water samples collected at and near the Tansitor site

In terms of ground water quality results there has never been a detection of volatile organics in any of the residential water supply wells adjacent to the Tansitor site Only one sampling event (January 20 1984) indicated the possible presence of volatiles in the Tansitor tap water Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only detected once it is likely that this detection was a false positive or indicative of laboratory contamination Follow-up sampling to this investigation will address residential well water quality

17 The

Group

342 Surface Water Quality

Surface water quality results from the January 3 1989 event are summarized in Table 2 and historical data appear in Appendix B Sampling locations are shown on Figure 2 As indicated

sample S-3 is located northeast of the firepond

- sample S-7 is located at an outfall of a pipeline originating at the firepond before entering the perennial stream

samples S-ll and S-13 represent upgradient and downgradient locations respectively on the perennial stream south of Route 9 and

- sample S-16 is located at an upgradient point on the intermittent stream north of the facility

Sample S-3 had no detections of VOCs This result is different from past sampling events (Appendix B) where S-3 was the most contaminated of any of the surface water locations After discussions with VTDEC personnel it appears that the location of S-3 has varied in the past Therefore no accurate trends can be determined at this time

VOC concentrations were non-detectable in S-ll S-7 had a total of 142 ppb and S-13 had a total of 24 ppb Based on the location of sampling points it appears that chemicals are entering the stream downgradient of S-ll either from tributary surface water sources or from ground water discharge The Maximum Contaminant Level (MCL) for 11-dichloroethane (11-DCA) has not been defined however the unofficial Vermont drinking water guideline of 70 ppb was not exceeded The MCLs for 11shydichloroethene (11-DCE) and 11 1-trichloroethane (TCA) the other two chemicals detected in S-7 and S-13 were also not exceeded The MCLs are presented here for comparative purposes alone since the stream is not a likely source of drinking water

Sample S-16 collected from the on-site intermittent stream had a concentration of 16615 ppb of total volatiles which exceeds drinking water standards for all constituents detected This concentration may be due to ground water discharge from the slope north of the firepond some of which drains west into the intermittent stream The presence of tetrachloroethene (PCE) at 20 ppb which was not detected anywhere else at the site warrants further investigation in this area

18 The

co

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343 Ground Water Flow and Direction

Figure 4 shows a water table map across the site Table 3 summarizes the water level data Ground water flow is locally towards the southeast at the site at a gradient of approximately 0065 ftft

Flow Rates

Using the natural range of values below and the modified Darcy equation the average linear velocity for the ground water in the overburden above the clay at the site is probably between 67 ftyr and 0027 ftyr

hydraulic conductivity 10~4 to 10~7 cmsec of till (K) (after Freeze amp Cherry

1979)

hydraulic gradient (i) 0065 ftft (calculated between

ERM-1S and -5S)

effective porosity (n) 10 to 25

v = (Ki)n

Although permeability (K) data were not obtained during this initial investigation a likely value of permeability is 10~4

cmsec with an effective porosity of 20 which would result in an average linear velocity of 34 ftyr for the upper till zone Field permeability testing is warranted to refine this estimate The more compact lower till likely has a lower permeability which would result in a lower average linear velocity which could restrict contaminant transport

In terms of a sensitivity analysis for the above equation velocity and effective porosity are inversely proportional Therefore a larger effective porosity would result in a slower average linear velocity A higher permeability would result in a higher velocity Applying these velocity estimates to contaminant transport must take into account dispersion and retardation effects

Vertical Gradients

At the time that ERM measured the water levels in the monitoring wells water in ERM-5D was frozen in the casing above ground level This is due to a high water level The depth to ice can not be directly correlated to depth to water in this well because of expansion effects however the difference is not

20

tennis courts

S-l 1 1 ntsrml ttsrjlt stream

perannial stream

_EGEND

Surfccs Water Samp1e

fanitor(ng Wei 1

Water Table Elevatlor ~t above MSL)

Water Taole Contours

D1rect1 on of G^ourcwator F 1 ov

SCALE (feet)

bull00 280 300 400

N

ERM i gare 4 New Engona ~c

Tensi tor E i e c ^ r c n i c s Inc

Genera i zed

vater Tao le E eva t ion Map

for Jani^arj 3 1989

WELL

ERM IS

ERM 2S

ERM 3S

ERM 4S

ERM 5S

ERM 5D

Table 3

WATER GAUGING AND SURVEY DATA

MP ELEVATION

ft above MSL

86029

84387

82262

81995

82238

82237

DEPTH TO

WATER

ft below MP

9 10

3 46

160

348

9 00

100

TOTAL DEPTH

ft below MP

1345

1980

1620

17 75

WATER TABLE ELEVATION

ft above MSL

851 19

84041

82102

81647

813 38

82137

All measurements made on January 3 1989 by ERM

Frozen plug prevented measurement Depth to ice

The

Group

likely to exceed a couple of inches The difference in the depth to ice in ERM-5D and the depth to water in ERM-5S is about eight feet This represents a strong upward vertical gradient especially since ERM-5S is screened between 6 and 16 feet below grade and EKM-5D is screened between 27 and 32 feet below grade

Although ERM-5S and -5D are screened in similar strata based on sediment texture the blow counts increased considerably beyond 15 feet below grade indicating a tighter zone as described earlier The increased compaction with depth and the upward vertical gradient would tend to hinder the downward migration of dissolved contaminants in this area Dissolved contaminant flow is probably concentrated in the upper till layer due to these combined factors

Because of the difference in density between water and organic solvents a vertical gradient alone would not prohibit the downward migration of a DNAPL As discussed earlier however there is currently no evidence to indicate the presence of a DNAPL

344 Ground Water Quality

Organics

Table 4 is a summary of volatile organic concentrations in ground water (as determined by the VTDEC laboratory) from the on-site monitoring wells installed by ERM Figure 5 shows the generalized TCA plume at the site Five solvent-related compounds from the EPA Method 624 suite of parameters were identified in the overburden at the site Well ERM-5D was frozen above ground at the time of sampling and therefore no data is available

Of the six compounds detected at the site several are likely breakdown products of the more prevalent contaminants TCA is known to break down abiotically to 11-DCE and through biodegradation to 11-DCA The kinetics of the reactions favor the formation of 11-DCA It is likely that the remaining constituents trichloroethene (TCE) tetrachloroethene (PCE) and chloroform are virgin chemicals

The upgradient and downgradient wells EPJM-1S and -5S both had non-detectable readings of volatile organic chemicals This would indicate that no additional sources of ground water contamination exist upgradient of the disposal pit Although the non-detectable reading in ERM-5S indicates that considerable attenuation of contaminants has occurred between the disposal pit and beyond the fire pond it does not necessarily demonstrate that ERM-5S is the furthest downgradient advance of contaminants in ground water It is possible that the leading edge of contamshy

23 Thlaquo

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perennial strsam

Surface Wcw2r~ Sample

N 100

Mom tor irg We I

TCA (ODD) D or nondetsctacia

t Cancentnac

ERM F -e o Sea 1e ( Fee t )

New Erg lard 1nc

00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

significantly below the peak concentrations in the boring This concentration which is far below the solubility limit of the VOCs detected at the site would indicate that a Dense Non-Aqueous Phase Liquid (DNAPL) is not present above the clay layer at this location Based on these readings the well screen for EPxM-2S was set between 70 and 17 feet below grade

ERM-3S had minor detections between 15 and 20 feet below grade of 20 ppm or less ERM-4S had a trace detection at the 50 to 70 foot interval of less than 10 ppm Similarly concentrations of 30 ppm or less were detected between 50 and 12 feet below grade in ERM-5D

The Vermont unofficial unpublished guidelines for soil removal are based on RCPJV landban requirements The general guidance is to multiply the landban concentration by a factor of 20 In the absence of a landban value the MCL multiplied by a factor of 20 should be used For constituents at the site the following guidelines may be applicable

Consituent Remediation Guideline

111-trichloroethane 8200 ppb (landban-based)

trichloroethene 100 ppb (MCL-based)

chloroform 2000 ppb (MCL-based)

11-dichloroethene 140 ppb (MCL-based)

tetrachloroethene 100 ppb ( p r o p o s e d based)

MCL-

11-dichloroethane 1400 ppb (based on VT water quality guideline)

Since these guidelines are chemical-specific laboratory analyses of soil samples are necessary to determine soil remediation levels for the Tansitor site ERM did not submit any soil samples for laboratory analysis during this investigation although prior investigations included soil sampling and analysis in the disposal pit area (Appendix A)

Since a soil excavation or in-situ remediation would not normally extend below the water table the soil removal guidelines do not necessarily apply to samples collected below the water table Saturated contaminated sediments are generally addressed through a ground water remedial action

16 TtK

34 Hydroqeology and Water Quality

In order to assess potential impacts of the Tansitor disposal pit site EKM investigated ground and surface water conditions on and directly downgradient of the site As ground and surface water are interactive an analysis of both systems is necessary to assess potential migration of chemicals

For comparative purposes the Maximum Contaminant Levels (MCLs) used for defining drinking water quality are listed below for those chemicals present at the site

Parameter MCL (ppb)

11-dichloroethane 70 (VT guideline not an MCL) 11-dichloroethene 7 111-trichloroethane 200 trichloroethene 5 tetrachloroethene 5 (proposed MCL) chloroform 100 (total trihalomethanes)

341 Historical Water Quality

An extensive sampling history exists at the site since 1983 Although limited ground water sampling occurred primarily in nearby water supply wells a large volume of surface water quality data exists Unfortunately the surface water sampling locations were never standardized by staking locations in the field Therefore it is difficult to generate trends over time at specific locations The surface water sampling points should be considered approximate locations Appendix B contains a summary of all water samples collected at and near the Tansitor site

In terms of ground water quality results there has never been a detection of volatile organics in any of the residential water supply wells adjacent to the Tansitor site Only one sampling event (January 20 1984) indicated the possible presence of volatiles in the Tansitor tap water Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only detected once it is likely that this detection was a false positive or indicative of laboratory contamination Follow-up sampling to this investigation will address residential well water quality

17 The

Group

342 Surface Water Quality

Surface water quality results from the January 3 1989 event are summarized in Table 2 and historical data appear in Appendix B Sampling locations are shown on Figure 2 As indicated

sample S-3 is located northeast of the firepond

- sample S-7 is located at an outfall of a pipeline originating at the firepond before entering the perennial stream

samples S-ll and S-13 represent upgradient and downgradient locations respectively on the perennial stream south of Route 9 and

- sample S-16 is located at an upgradient point on the intermittent stream north of the facility

Sample S-3 had no detections of VOCs This result is different from past sampling events (Appendix B) where S-3 was the most contaminated of any of the surface water locations After discussions with VTDEC personnel it appears that the location of S-3 has varied in the past Therefore no accurate trends can be determined at this time

VOC concentrations were non-detectable in S-ll S-7 had a total of 142 ppb and S-13 had a total of 24 ppb Based on the location of sampling points it appears that chemicals are entering the stream downgradient of S-ll either from tributary surface water sources or from ground water discharge The Maximum Contaminant Level (MCL) for 11-dichloroethane (11-DCA) has not been defined however the unofficial Vermont drinking water guideline of 70 ppb was not exceeded The MCLs for 11shydichloroethene (11-DCE) and 11 1-trichloroethane (TCA) the other two chemicals detected in S-7 and S-13 were also not exceeded The MCLs are presented here for comparative purposes alone since the stream is not a likely source of drinking water

Sample S-16 collected from the on-site intermittent stream had a concentration of 16615 ppb of total volatiles which exceeds drinking water standards for all constituents detected This concentration may be due to ground water discharge from the slope north of the firepond some of which drains west into the intermittent stream The presence of tetrachloroethene (PCE) at 20 ppb which was not detected anywhere else at the site warrants further investigation in this area

18 The

co

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343 Ground Water Flow and Direction

Figure 4 shows a water table map across the site Table 3 summarizes the water level data Ground water flow is locally towards the southeast at the site at a gradient of approximately 0065 ftft

Flow Rates

Using the natural range of values below and the modified Darcy equation the average linear velocity for the ground water in the overburden above the clay at the site is probably between 67 ftyr and 0027 ftyr

hydraulic conductivity 10~4 to 10~7 cmsec of till (K) (after Freeze amp Cherry

1979)

hydraulic gradient (i) 0065 ftft (calculated between

ERM-1S and -5S)

effective porosity (n) 10 to 25

v = (Ki)n

Although permeability (K) data were not obtained during this initial investigation a likely value of permeability is 10~4

cmsec with an effective porosity of 20 which would result in an average linear velocity of 34 ftyr for the upper till zone Field permeability testing is warranted to refine this estimate The more compact lower till likely has a lower permeability which would result in a lower average linear velocity which could restrict contaminant transport

In terms of a sensitivity analysis for the above equation velocity and effective porosity are inversely proportional Therefore a larger effective porosity would result in a slower average linear velocity A higher permeability would result in a higher velocity Applying these velocity estimates to contaminant transport must take into account dispersion and retardation effects

Vertical Gradients

At the time that ERM measured the water levels in the monitoring wells water in ERM-5D was frozen in the casing above ground level This is due to a high water level The depth to ice can not be directly correlated to depth to water in this well because of expansion effects however the difference is not

20

tennis courts

S-l 1 1 ntsrml ttsrjlt stream

perannial stream

_EGEND

Surfccs Water Samp1e

fanitor(ng Wei 1

Water Table Elevatlor ~t above MSL)

Water Taole Contours

D1rect1 on of G^ourcwator F 1 ov

SCALE (feet)

bull00 280 300 400

N

ERM i gare 4 New Engona ~c

Tensi tor E i e c ^ r c n i c s Inc

Genera i zed

vater Tao le E eva t ion Map

for Jani^arj 3 1989

WELL

ERM IS

ERM 2S

ERM 3S

ERM 4S

ERM 5S

ERM 5D

Table 3

WATER GAUGING AND SURVEY DATA

MP ELEVATION

ft above MSL

86029

84387

82262

81995

82238

82237

DEPTH TO

WATER

ft below MP

9 10

3 46

160

348

9 00

100

TOTAL DEPTH

ft below MP

1345

1980

1620

17 75

WATER TABLE ELEVATION

ft above MSL

851 19

84041

82102

81647

813 38

82137

All measurements made on January 3 1989 by ERM

Frozen plug prevented measurement Depth to ice

The

Group

likely to exceed a couple of inches The difference in the depth to ice in ERM-5D and the depth to water in ERM-5S is about eight feet This represents a strong upward vertical gradient especially since ERM-5S is screened between 6 and 16 feet below grade and EKM-5D is screened between 27 and 32 feet below grade

Although ERM-5S and -5D are screened in similar strata based on sediment texture the blow counts increased considerably beyond 15 feet below grade indicating a tighter zone as described earlier The increased compaction with depth and the upward vertical gradient would tend to hinder the downward migration of dissolved contaminants in this area Dissolved contaminant flow is probably concentrated in the upper till layer due to these combined factors

Because of the difference in density between water and organic solvents a vertical gradient alone would not prohibit the downward migration of a DNAPL As discussed earlier however there is currently no evidence to indicate the presence of a DNAPL

344 Ground Water Quality

Organics

Table 4 is a summary of volatile organic concentrations in ground water (as determined by the VTDEC laboratory) from the on-site monitoring wells installed by ERM Figure 5 shows the generalized TCA plume at the site Five solvent-related compounds from the EPA Method 624 suite of parameters were identified in the overburden at the site Well ERM-5D was frozen above ground at the time of sampling and therefore no data is available

Of the six compounds detected at the site several are likely breakdown products of the more prevalent contaminants TCA is known to break down abiotically to 11-DCE and through biodegradation to 11-DCA The kinetics of the reactions favor the formation of 11-DCA It is likely that the remaining constituents trichloroethene (TCE) tetrachloroethene (PCE) and chloroform are virgin chemicals

The upgradient and downgradient wells EPJM-1S and -5S both had non-detectable readings of volatile organic chemicals This would indicate that no additional sources of ground water contamination exist upgradient of the disposal pit Although the non-detectable reading in ERM-5S indicates that considerable attenuation of contaminants has occurred between the disposal pit and beyond the fire pond it does not necessarily demonstrate that ERM-5S is the furthest downgradient advance of contaminants in ground water It is possible that the leading edge of contamshy

23 Thlaquo

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W O 4-1 gtH rH rH -H O O O -H Q -H ox XI rH r-l O o 2 4-gt HH O U EH O gt Ul

O P C O -H bullH 1 rH V) bull- 4-1 0 Q) U Q Q H x j OJ CO -H EH a 73 O 1 1 ~ O lt rH gt1

Z -H rH (H cH rH -H EH CL rH 3 o c x - -bull - SH O g rt3

o o P O ltH rH (H EH EH tlaquo C gt CO lt

Ths

wate 1 i no

1 ntsrm 1 tts stream

perennial strsam

Surface Wcw2r~ Sample

N 100

Mom tor irg We I

TCA (ODD) D or nondetsctacia

t Cancentnac

ERM F -e o Sea 1e ( Fee t )

New Erg lard 1nc

00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

34 Hydroqeology and Water Quality

In order to assess potential impacts of the Tansitor disposal pit site EKM investigated ground and surface water conditions on and directly downgradient of the site As ground and surface water are interactive an analysis of both systems is necessary to assess potential migration of chemicals

For comparative purposes the Maximum Contaminant Levels (MCLs) used for defining drinking water quality are listed below for those chemicals present at the site

Parameter MCL (ppb)

11-dichloroethane 70 (VT guideline not an MCL) 11-dichloroethene 7 111-trichloroethane 200 trichloroethene 5 tetrachloroethene 5 (proposed MCL) chloroform 100 (total trihalomethanes)

341 Historical Water Quality

An extensive sampling history exists at the site since 1983 Although limited ground water sampling occurred primarily in nearby water supply wells a large volume of surface water quality data exists Unfortunately the surface water sampling locations were never standardized by staking locations in the field Therefore it is difficult to generate trends over time at specific locations The surface water sampling points should be considered approximate locations Appendix B contains a summary of all water samples collected at and near the Tansitor site

In terms of ground water quality results there has never been a detection of volatile organics in any of the residential water supply wells adjacent to the Tansitor site Only one sampling event (January 20 1984) indicated the possible presence of volatiles in the Tansitor tap water Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only detected once it is likely that this detection was a false positive or indicative of laboratory contamination Follow-up sampling to this investigation will address residential well water quality

17 The

Group

342 Surface Water Quality

Surface water quality results from the January 3 1989 event are summarized in Table 2 and historical data appear in Appendix B Sampling locations are shown on Figure 2 As indicated

sample S-3 is located northeast of the firepond

- sample S-7 is located at an outfall of a pipeline originating at the firepond before entering the perennial stream

samples S-ll and S-13 represent upgradient and downgradient locations respectively on the perennial stream south of Route 9 and

- sample S-16 is located at an upgradient point on the intermittent stream north of the facility

Sample S-3 had no detections of VOCs This result is different from past sampling events (Appendix B) where S-3 was the most contaminated of any of the surface water locations After discussions with VTDEC personnel it appears that the location of S-3 has varied in the past Therefore no accurate trends can be determined at this time

VOC concentrations were non-detectable in S-ll S-7 had a total of 142 ppb and S-13 had a total of 24 ppb Based on the location of sampling points it appears that chemicals are entering the stream downgradient of S-ll either from tributary surface water sources or from ground water discharge The Maximum Contaminant Level (MCL) for 11-dichloroethane (11-DCA) has not been defined however the unofficial Vermont drinking water guideline of 70 ppb was not exceeded The MCLs for 11shydichloroethene (11-DCE) and 11 1-trichloroethane (TCA) the other two chemicals detected in S-7 and S-13 were also not exceeded The MCLs are presented here for comparative purposes alone since the stream is not a likely source of drinking water

Sample S-16 collected from the on-site intermittent stream had a concentration of 16615 ppb of total volatiles which exceeds drinking water standards for all constituents detected This concentration may be due to ground water discharge from the slope north of the firepond some of which drains west into the intermittent stream The presence of tetrachloroethene (PCE) at 20 ppb which was not detected anywhere else at the site warrants further investigation in this area

18 The

co

o CN o

rH CO

P

Tlshy O O

CO T CN CN CN

rH

CNO

0

O rH

LT1 rH

U3

T3 0) bullP tn

bullH U) rH rH

Q)gt

0)5-1 (0

co CN CN rH cn

ID Q Q 2 2

CN Q 2

CN

gti O5-1 a ^ bullpound -P O fO O SH O T3 X CU

rH

rH

cn Q Q Q 2 2 2

Q Q 2 2

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(0 4-gt rH O

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cn U -P w CD

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a 2 Pi M mdashshy

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D Q Q Q 2 2 2

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CD (D C C O 0)

^~ j^

C (0j^ -P CU o cu gtH C

C O rH

rH

73 fl 0) -P 5n

-p u cu

pound Ocd Tj

CD

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-P -P CD CU

H 0

O 0) rH x x -P cn

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bullH-H

bullH-P

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M EH lt M

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Q Q 1 1 rH rH

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M -H CU W rH gt

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O gt

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shy -H

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- 5H rH EH

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g (0 roc cn lt

343 Ground Water Flow and Direction

Figure 4 shows a water table map across the site Table 3 summarizes the water level data Ground water flow is locally towards the southeast at the site at a gradient of approximately 0065 ftft

Flow Rates

Using the natural range of values below and the modified Darcy equation the average linear velocity for the ground water in the overburden above the clay at the site is probably between 67 ftyr and 0027 ftyr

hydraulic conductivity 10~4 to 10~7 cmsec of till (K) (after Freeze amp Cherry

1979)

hydraulic gradient (i) 0065 ftft (calculated between

ERM-1S and -5S)

effective porosity (n) 10 to 25

v = (Ki)n

Although permeability (K) data were not obtained during this initial investigation a likely value of permeability is 10~4

cmsec with an effective porosity of 20 which would result in an average linear velocity of 34 ftyr for the upper till zone Field permeability testing is warranted to refine this estimate The more compact lower till likely has a lower permeability which would result in a lower average linear velocity which could restrict contaminant transport

In terms of a sensitivity analysis for the above equation velocity and effective porosity are inversely proportional Therefore a larger effective porosity would result in a slower average linear velocity A higher permeability would result in a higher velocity Applying these velocity estimates to contaminant transport must take into account dispersion and retardation effects

Vertical Gradients

At the time that ERM measured the water levels in the monitoring wells water in ERM-5D was frozen in the casing above ground level This is due to a high water level The depth to ice can not be directly correlated to depth to water in this well because of expansion effects however the difference is not

20

tennis courts

S-l 1 1 ntsrml ttsrjlt stream

perannial stream

_EGEND

Surfccs Water Samp1e

fanitor(ng Wei 1

Water Table Elevatlor ~t above MSL)

Water Taole Contours

D1rect1 on of G^ourcwator F 1 ov

SCALE (feet)

bull00 280 300 400

N

ERM i gare 4 New Engona ~c

Tensi tor E i e c ^ r c n i c s Inc

Genera i zed

vater Tao le E eva t ion Map

for Jani^arj 3 1989

WELL

ERM IS

ERM 2S

ERM 3S

ERM 4S

ERM 5S

ERM 5D

Table 3

WATER GAUGING AND SURVEY DATA

MP ELEVATION

ft above MSL

86029

84387

82262

81995

82238

82237

DEPTH TO

WATER

ft below MP

9 10

3 46

160

348

9 00

100

TOTAL DEPTH

ft below MP

1345

1980

1620

17 75

WATER TABLE ELEVATION

ft above MSL

851 19

84041

82102

81647

813 38

82137

All measurements made on January 3 1989 by ERM

Frozen plug prevented measurement Depth to ice

The

Group

likely to exceed a couple of inches The difference in the depth to ice in ERM-5D and the depth to water in ERM-5S is about eight feet This represents a strong upward vertical gradient especially since ERM-5S is screened between 6 and 16 feet below grade and EKM-5D is screened between 27 and 32 feet below grade

Although ERM-5S and -5D are screened in similar strata based on sediment texture the blow counts increased considerably beyond 15 feet below grade indicating a tighter zone as described earlier The increased compaction with depth and the upward vertical gradient would tend to hinder the downward migration of dissolved contaminants in this area Dissolved contaminant flow is probably concentrated in the upper till layer due to these combined factors

Because of the difference in density between water and organic solvents a vertical gradient alone would not prohibit the downward migration of a DNAPL As discussed earlier however there is currently no evidence to indicate the presence of a DNAPL

344 Ground Water Quality

Organics

Table 4 is a summary of volatile organic concentrations in ground water (as determined by the VTDEC laboratory) from the on-site monitoring wells installed by ERM Figure 5 shows the generalized TCA plume at the site Five solvent-related compounds from the EPA Method 624 suite of parameters were identified in the overburden at the site Well ERM-5D was frozen above ground at the time of sampling and therefore no data is available

Of the six compounds detected at the site several are likely breakdown products of the more prevalent contaminants TCA is known to break down abiotically to 11-DCE and through biodegradation to 11-DCA The kinetics of the reactions favor the formation of 11-DCA It is likely that the remaining constituents trichloroethene (TCE) tetrachloroethene (PCE) and chloroform are virgin chemicals

The upgradient and downgradient wells EPJM-1S and -5S both had non-detectable readings of volatile organic chemicals This would indicate that no additional sources of ground water contamination exist upgradient of the disposal pit Although the non-detectable reading in ERM-5S indicates that considerable attenuation of contaminants has occurred between the disposal pit and beyond the fire pond it does not necessarily demonstrate that ERM-5S is the furthest downgradient advance of contaminants in ground water It is possible that the leading edge of contamshy

23 Thlaquo

Group

- -

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00 IT) 0)

1 Q Q Q Q Q Q 2 2 222 2

sect w

rH

CO

CO en 3 vO CN co i P Q Q CN Q CN c sect 2 2 2 o w

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QJ ^ gtH X 4-1 CO bullH g O o o cu

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O P C O -H bullH 1 rH V) bull- 4-1 0 Q) U Q Q H x j OJ CO -H EH a 73 O 1 1 ~ O lt rH gt1

Z -H rH (H cH rH -H EH CL rH 3 o c x - -bull - SH O g rt3

o o P O ltH rH (H EH EH tlaquo C gt CO lt

Ths

wate 1 i no

1 ntsrm 1 tts stream

perennial strsam

Surface Wcw2r~ Sample

N 100

Mom tor irg We I

TCA (ODD) D or nondetsctacia

t Cancentnac

ERM F -e o Sea 1e ( Fee t )

New Erg lard 1nc

00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

342 Surface Water Quality

Surface water quality results from the January 3 1989 event are summarized in Table 2 and historical data appear in Appendix B Sampling locations are shown on Figure 2 As indicated

sample S-3 is located northeast of the firepond

- sample S-7 is located at an outfall of a pipeline originating at the firepond before entering the perennial stream

samples S-ll and S-13 represent upgradient and downgradient locations respectively on the perennial stream south of Route 9 and

- sample S-16 is located at an upgradient point on the intermittent stream north of the facility

Sample S-3 had no detections of VOCs This result is different from past sampling events (Appendix B) where S-3 was the most contaminated of any of the surface water locations After discussions with VTDEC personnel it appears that the location of S-3 has varied in the past Therefore no accurate trends can be determined at this time

VOC concentrations were non-detectable in S-ll S-7 had a total of 142 ppb and S-13 had a total of 24 ppb Based on the location of sampling points it appears that chemicals are entering the stream downgradient of S-ll either from tributary surface water sources or from ground water discharge The Maximum Contaminant Level (MCL) for 11-dichloroethane (11-DCA) has not been defined however the unofficial Vermont drinking water guideline of 70 ppb was not exceeded The MCLs for 11shydichloroethene (11-DCE) and 11 1-trichloroethane (TCA) the other two chemicals detected in S-7 and S-13 were also not exceeded The MCLs are presented here for comparative purposes alone since the stream is not a likely source of drinking water

Sample S-16 collected from the on-site intermittent stream had a concentration of 16615 ppb of total volatiles which exceeds drinking water standards for all constituents detected This concentration may be due to ground water discharge from the slope north of the firepond some of which drains west into the intermittent stream The presence of tetrachloroethene (PCE) at 20 ppb which was not detected anywhere else at the site warrants further investigation in this area

18 The

co

o CN o

rH CO

P

Tlshy O O

CO T CN CN CN

rH

CNO

0

O rH

LT1 rH

U3

T3 0) bullP tn

bullH U) rH rH

Q)gt

0)5-1 (0

co CN CN rH cn

ID Q Q 2 2

CN Q 2

CN

gti O5-1 a ^ bullpound -P O fO O SH O T3 X CU

rH

rH

cn Q Q Q 2 2 2

Q Q 2 2

Q 2

(0 4-gt rH O

0)

cn U -P w CD

w Q T3 EH

QJ

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EH N X5

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cu rH

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C c CU

CQ

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a 2 Pi M mdashshy

CO cn

D Q Q Q 2 2 2

Q Q 2 2

Q 2

(0 go cn o co cn ^r rH CN

row j CU -p -rH

2 O H

T3 Imdash

n T5 O

CO 0 5n -P

o 1 EH

^ (d CU 3 S

c 2 0 W bullj U mdashi 0)

in o c o

2 O U

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0) C

(0 x

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CD (D C C O 0)

^~ j^

C (0j^ -P CU o cu gtH C

C O rH

rH

73 fl 0) -P 5n

-p u cu

pound Ocd Tj

CD

CD O H

-P -P CD CU

H 0

O 0) rH x x -P cn

OCU

O M-l

rH

W

SH

o W gt-J)

Q 2

bullH-H

bullH-P

O O - I 1 rH O

C X ^H o o x

UbullHj_iEH

0) Oj_i O

V

o o gt

O

O -H

W O -P -H

CO

M EH lt M

D O az

C

O3bullH

-H -rH

Q Q 1 1 rH rH

U

(t3 5H -P

1 rH

ltH r - U

rH -H

i_j ltC EH

M -H CU W rH gt

Si rH

c fO EH

O gt

o u

CD

shy -H

shy CU rH EH

- 5H rH EH

O EH

g (0 roc cn lt

343 Ground Water Flow and Direction

Figure 4 shows a water table map across the site Table 3 summarizes the water level data Ground water flow is locally towards the southeast at the site at a gradient of approximately 0065 ftft

Flow Rates

Using the natural range of values below and the modified Darcy equation the average linear velocity for the ground water in the overburden above the clay at the site is probably between 67 ftyr and 0027 ftyr

hydraulic conductivity 10~4 to 10~7 cmsec of till (K) (after Freeze amp Cherry

1979)

hydraulic gradient (i) 0065 ftft (calculated between

ERM-1S and -5S)

effective porosity (n) 10 to 25

v = (Ki)n

Although permeability (K) data were not obtained during this initial investigation a likely value of permeability is 10~4

cmsec with an effective porosity of 20 which would result in an average linear velocity of 34 ftyr for the upper till zone Field permeability testing is warranted to refine this estimate The more compact lower till likely has a lower permeability which would result in a lower average linear velocity which could restrict contaminant transport

In terms of a sensitivity analysis for the above equation velocity and effective porosity are inversely proportional Therefore a larger effective porosity would result in a slower average linear velocity A higher permeability would result in a higher velocity Applying these velocity estimates to contaminant transport must take into account dispersion and retardation effects

Vertical Gradients

At the time that ERM measured the water levels in the monitoring wells water in ERM-5D was frozen in the casing above ground level This is due to a high water level The depth to ice can not be directly correlated to depth to water in this well because of expansion effects however the difference is not

20

tennis courts

S-l 1 1 ntsrml ttsrjlt stream

perannial stream

_EGEND

Surfccs Water Samp1e

fanitor(ng Wei 1

Water Table Elevatlor ~t above MSL)

Water Taole Contours

D1rect1 on of G^ourcwator F 1 ov

SCALE (feet)

bull00 280 300 400

N

ERM i gare 4 New Engona ~c

Tensi tor E i e c ^ r c n i c s Inc

Genera i zed

vater Tao le E eva t ion Map

for Jani^arj 3 1989

WELL

ERM IS

ERM 2S

ERM 3S

ERM 4S

ERM 5S

ERM 5D

Table 3

WATER GAUGING AND SURVEY DATA

MP ELEVATION

ft above MSL

86029

84387

82262

81995

82238

82237

DEPTH TO

WATER

ft below MP

9 10

3 46

160

348

9 00

100

TOTAL DEPTH

ft below MP

1345

1980

1620

17 75

WATER TABLE ELEVATION

ft above MSL

851 19

84041

82102

81647

813 38

82137

All measurements made on January 3 1989 by ERM

Frozen plug prevented measurement Depth to ice

The

Group

likely to exceed a couple of inches The difference in the depth to ice in ERM-5D and the depth to water in ERM-5S is about eight feet This represents a strong upward vertical gradient especially since ERM-5S is screened between 6 and 16 feet below grade and EKM-5D is screened between 27 and 32 feet below grade

Although ERM-5S and -5D are screened in similar strata based on sediment texture the blow counts increased considerably beyond 15 feet below grade indicating a tighter zone as described earlier The increased compaction with depth and the upward vertical gradient would tend to hinder the downward migration of dissolved contaminants in this area Dissolved contaminant flow is probably concentrated in the upper till layer due to these combined factors

Because of the difference in density between water and organic solvents a vertical gradient alone would not prohibit the downward migration of a DNAPL As discussed earlier however there is currently no evidence to indicate the presence of a DNAPL

344 Ground Water Quality

Organics

Table 4 is a summary of volatile organic concentrations in ground water (as determined by the VTDEC laboratory) from the on-site monitoring wells installed by ERM Figure 5 shows the generalized TCA plume at the site Five solvent-related compounds from the EPA Method 624 suite of parameters were identified in the overburden at the site Well ERM-5D was frozen above ground at the time of sampling and therefore no data is available

Of the six compounds detected at the site several are likely breakdown products of the more prevalent contaminants TCA is known to break down abiotically to 11-DCE and through biodegradation to 11-DCA The kinetics of the reactions favor the formation of 11-DCA It is likely that the remaining constituents trichloroethene (TCE) tetrachloroethene (PCE) and chloroform are virgin chemicals

The upgradient and downgradient wells EPJM-1S and -5S both had non-detectable readings of volatile organic chemicals This would indicate that no additional sources of ground water contamination exist upgradient of the disposal pit Although the non-detectable reading in ERM-5S indicates that considerable attenuation of contaminants has occurred between the disposal pit and beyond the fire pond it does not necessarily demonstrate that ERM-5S is the furthest downgradient advance of contaminants in ground water It is possible that the leading edge of contamshy

23 Thlaquo

Group

- -

Oi CO

00 IT) 0)

1 Q Q Q Q Q Q 2 2 222 2

sect w

rH

CO

CO en 3 vO CN co i P Q Q CN Q CN c sect 2 2 2 o w

e gti O SH O

CO o CO ^3 O gtpoundgt (N in 4J T3

CO ^ Crt rH in rd CO n OJ ^f ltN en M |

1 p bullgt - O O sect CO CO X) CO

W rH 0)

O wu

gti 4-) EH Q rH

C H o O O O o EH C O 2 CO ^f 31 O CN o gt o g O 01 [ rT rH rH T-J

1 P Q shy -0) ^ s 2 r- rH U3 in

K O o W rH

EH -H CD shyc lt X M CO o gtiT3

rH C

Q Q) rfl 3 2 amp CO P

i Q Q Q Q Q Q Ecc

O 01 0) rH OS 4-1 2 2 2 2 2 2 T3 O

sect0) C UO UX) CQ

0)

w (0

CO CO

4-1 2 o C O

-X O 4-gt

0) O C ampH O

2 en 03 W rH 0) 3 u rd C C 2 (d

o O I] (U a) x -H O c C 4-1 C rd rd CO 0) o U 0) X x o cu 0) SH a 4-J 4-1 lH C 4-gt ^ 4-) 0) Q) O Q) U O O TJ O o rH x 0) 4-1

QJ ^ gtH X 4-1 CO bullH g O o o cu

W O 4-1 gtH rH rH -H O O O -H Q -H ox XI rH r-l O o 2 4-gt HH O U EH O gt Ul

O P C O -H bullH 1 rH V) bull- 4-1 0 Q) U Q Q H x j OJ CO -H EH a 73 O 1 1 ~ O lt rH gt1

Z -H rH (H cH rH -H EH CL rH 3 o c x - -bull - SH O g rt3

o o P O ltH rH (H EH EH tlaquo C gt CO lt

Ths

wate 1 i no

1 ntsrm 1 tts stream

perennial strsam

Surface Wcw2r~ Sample

N 100

Mom tor irg We I

TCA (ODD) D or nondetsctacia

t Cancentnac

ERM F -e o Sea 1e ( Fee t )

New Erg lard 1nc

00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

co

o CN o

rH CO

P

Tlshy O O

CO T CN CN CN

rH

CNO

0

O rH

LT1 rH

U3

T3 0) bullP tn

bullH U) rH rH

Q)gt

0)5-1 (0

co CN CN rH cn

ID Q Q 2 2

CN Q 2

CN

gti O5-1 a ^ bullpound -P O fO O SH O T3 X CU

rH

rH

cn Q Q Q 2 2 2

Q Q 2 2

Q 2

(0 4-gt rH O

0)

cn U -P w CD

w Q T3 EH

QJ

-pc gt1 C

O cn XI O gH CU

cs W

rshycn

D

O rH

ro Q

2

CTv cobullH

Q 2

CN IT) rH

T3CU

-P 3

EH N X5

C O

(0C

cn T3

-P U (0 C

CN Pn

cu rH

X 03 EH

C c CU

CQ

D mdashraquo cn X

a 2 Pi M mdashshy

CO cn

D Q Q Q 2 2 2

Q Q 2 2

Q 2

(0 go cn o co cn ^r rH CN

row j CU -p -rH

2 O H

T3 Imdash

n T5 O

CO 0 5n -P

o 1 EH

^ (d CU 3 S

c 2 0 W bullj U mdashi 0)

in o c o

2 O U

CJ M 2

T

vl-^3CDr^ij

0) C

(0 x

i ]

CD (D C C O 0)

^~ j^

C (0j^ -P CU o cu gtH C

C O rH

rH

73 fl 0) -P 5n

-p u cu

pound Ocd Tj

CD

CD O H

-P -P CD CU

H 0

O 0) rH x x -P cn

OCU

O M-l

rH

W

SH

o W gt-J)

Q 2

bullH-H

bullH-P

O O - I 1 rH O

C X ^H o o x

UbullHj_iEH

0) Oj_i O

V

o o gt

O

O -H

W O -P -H

CO

M EH lt M

D O az

C

O3bullH

-H -rH

Q Q 1 1 rH rH

U

(t3 5H -P

1 rH

ltH r - U

rH -H

i_j ltC EH

M -H CU W rH gt

Si rH

c fO EH

O gt

o u

CD

shy -H

shy CU rH EH

- 5H rH EH

O EH

g (0 roc cn lt

343 Ground Water Flow and Direction

Figure 4 shows a water table map across the site Table 3 summarizes the water level data Ground water flow is locally towards the southeast at the site at a gradient of approximately 0065 ftft

Flow Rates

Using the natural range of values below and the modified Darcy equation the average linear velocity for the ground water in the overburden above the clay at the site is probably between 67 ftyr and 0027 ftyr

hydraulic conductivity 10~4 to 10~7 cmsec of till (K) (after Freeze amp Cherry

1979)

hydraulic gradient (i) 0065 ftft (calculated between

ERM-1S and -5S)

effective porosity (n) 10 to 25

v = (Ki)n

Although permeability (K) data were not obtained during this initial investigation a likely value of permeability is 10~4

cmsec with an effective porosity of 20 which would result in an average linear velocity of 34 ftyr for the upper till zone Field permeability testing is warranted to refine this estimate The more compact lower till likely has a lower permeability which would result in a lower average linear velocity which could restrict contaminant transport

In terms of a sensitivity analysis for the above equation velocity and effective porosity are inversely proportional Therefore a larger effective porosity would result in a slower average linear velocity A higher permeability would result in a higher velocity Applying these velocity estimates to contaminant transport must take into account dispersion and retardation effects

Vertical Gradients

At the time that ERM measured the water levels in the monitoring wells water in ERM-5D was frozen in the casing above ground level This is due to a high water level The depth to ice can not be directly correlated to depth to water in this well because of expansion effects however the difference is not

20

tennis courts

S-l 1 1 ntsrml ttsrjlt stream

perannial stream

_EGEND

Surfccs Water Samp1e

fanitor(ng Wei 1

Water Table Elevatlor ~t above MSL)

Water Taole Contours

D1rect1 on of G^ourcwator F 1 ov

SCALE (feet)

bull00 280 300 400

N

ERM i gare 4 New Engona ~c

Tensi tor E i e c ^ r c n i c s Inc

Genera i zed

vater Tao le E eva t ion Map

for Jani^arj 3 1989

WELL

ERM IS

ERM 2S

ERM 3S

ERM 4S

ERM 5S

ERM 5D

Table 3

WATER GAUGING AND SURVEY DATA

MP ELEVATION

ft above MSL

86029

84387

82262

81995

82238

82237

DEPTH TO

WATER

ft below MP

9 10

3 46

160

348

9 00

100

TOTAL DEPTH

ft below MP

1345

1980

1620

17 75

WATER TABLE ELEVATION

ft above MSL

851 19

84041

82102

81647

813 38

82137

All measurements made on January 3 1989 by ERM

Frozen plug prevented measurement Depth to ice

The

Group

likely to exceed a couple of inches The difference in the depth to ice in ERM-5D and the depth to water in ERM-5S is about eight feet This represents a strong upward vertical gradient especially since ERM-5S is screened between 6 and 16 feet below grade and EKM-5D is screened between 27 and 32 feet below grade

Although ERM-5S and -5D are screened in similar strata based on sediment texture the blow counts increased considerably beyond 15 feet below grade indicating a tighter zone as described earlier The increased compaction with depth and the upward vertical gradient would tend to hinder the downward migration of dissolved contaminants in this area Dissolved contaminant flow is probably concentrated in the upper till layer due to these combined factors

Because of the difference in density between water and organic solvents a vertical gradient alone would not prohibit the downward migration of a DNAPL As discussed earlier however there is currently no evidence to indicate the presence of a DNAPL

344 Ground Water Quality

Organics

Table 4 is a summary of volatile organic concentrations in ground water (as determined by the VTDEC laboratory) from the on-site monitoring wells installed by ERM Figure 5 shows the generalized TCA plume at the site Five solvent-related compounds from the EPA Method 624 suite of parameters were identified in the overburden at the site Well ERM-5D was frozen above ground at the time of sampling and therefore no data is available

Of the six compounds detected at the site several are likely breakdown products of the more prevalent contaminants TCA is known to break down abiotically to 11-DCE and through biodegradation to 11-DCA The kinetics of the reactions favor the formation of 11-DCA It is likely that the remaining constituents trichloroethene (TCE) tetrachloroethene (PCE) and chloroform are virgin chemicals

The upgradient and downgradient wells EPJM-1S and -5S both had non-detectable readings of volatile organic chemicals This would indicate that no additional sources of ground water contamination exist upgradient of the disposal pit Although the non-detectable reading in ERM-5S indicates that considerable attenuation of contaminants has occurred between the disposal pit and beyond the fire pond it does not necessarily demonstrate that ERM-5S is the furthest downgradient advance of contaminants in ground water It is possible that the leading edge of contamshy

23 Thlaquo

Group

- -

Oi CO

00 IT) 0)

1 Q Q Q Q Q Q 2 2 222 2

sect w

rH

CO

CO en 3 vO CN co i P Q Q CN Q CN c sect 2 2 2 o w

e gti O SH O

CO o CO ^3 O gtpoundgt (N in 4J T3

CO ^ Crt rH in rd CO n OJ ^f ltN en M |

1 p bullgt - O O sect CO CO X) CO

W rH 0)

O wu

gti 4-) EH Q rH

C H o O O O o EH C O 2 CO ^f 31 O CN o gt o g O 01 [ rT rH rH T-J

1 P Q shy -0) ^ s 2 r- rH U3 in

K O o W rH

EH -H CD shyc lt X M CO o gtiT3

rH C

Q Q) rfl 3 2 amp CO P

i Q Q Q Q Q Q Ecc

O 01 0) rH OS 4-1 2 2 2 2 2 2 T3 O

sect0) C UO UX) CQ

0)

w (0

CO CO

4-1 2 o C O

-X O 4-gt

0) O C ampH O

2 en 03 W rH 0) 3 u rd C C 2 (d

o O I] (U a) x -H O c C 4-1 C rd rd CO 0) o U 0) X x o cu 0) SH a 4-J 4-1 lH C 4-gt ^ 4-) 0) Q) O Q) U O O TJ O o rH x 0) 4-1

QJ ^ gtH X 4-1 CO bullH g O o o cu

W O 4-1 gtH rH rH -H O O O -H Q -H ox XI rH r-l O o 2 4-gt HH O U EH O gt Ul

O P C O -H bullH 1 rH V) bull- 4-1 0 Q) U Q Q H x j OJ CO -H EH a 73 O 1 1 ~ O lt rH gt1

Z -H rH (H cH rH -H EH CL rH 3 o c x - -bull - SH O g rt3

o o P O ltH rH (H EH EH tlaquo C gt CO lt

Ths

wate 1 i no

1 ntsrm 1 tts stream

perennial strsam

Surface Wcw2r~ Sample

N 100

Mom tor irg We I

TCA (ODD) D or nondetsctacia

t Cancentnac

ERM F -e o Sea 1e ( Fee t )

New Erg lard 1nc

00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

343 Ground Water Flow and Direction

Figure 4 shows a water table map across the site Table 3 summarizes the water level data Ground water flow is locally towards the southeast at the site at a gradient of approximately 0065 ftft

Flow Rates

Using the natural range of values below and the modified Darcy equation the average linear velocity for the ground water in the overburden above the clay at the site is probably between 67 ftyr and 0027 ftyr

hydraulic conductivity 10~4 to 10~7 cmsec of till (K) (after Freeze amp Cherry

1979)

hydraulic gradient (i) 0065 ftft (calculated between

ERM-1S and -5S)

effective porosity (n) 10 to 25

v = (Ki)n

Although permeability (K) data were not obtained during this initial investigation a likely value of permeability is 10~4

cmsec with an effective porosity of 20 which would result in an average linear velocity of 34 ftyr for the upper till zone Field permeability testing is warranted to refine this estimate The more compact lower till likely has a lower permeability which would result in a lower average linear velocity which could restrict contaminant transport

In terms of a sensitivity analysis for the above equation velocity and effective porosity are inversely proportional Therefore a larger effective porosity would result in a slower average linear velocity A higher permeability would result in a higher velocity Applying these velocity estimates to contaminant transport must take into account dispersion and retardation effects

Vertical Gradients

At the time that ERM measured the water levels in the monitoring wells water in ERM-5D was frozen in the casing above ground level This is due to a high water level The depth to ice can not be directly correlated to depth to water in this well because of expansion effects however the difference is not

20

tennis courts

S-l 1 1 ntsrml ttsrjlt stream

perannial stream

_EGEND

Surfccs Water Samp1e

fanitor(ng Wei 1

Water Table Elevatlor ~t above MSL)

Water Taole Contours

D1rect1 on of G^ourcwator F 1 ov

SCALE (feet)

bull00 280 300 400

N

ERM i gare 4 New Engona ~c

Tensi tor E i e c ^ r c n i c s Inc

Genera i zed

vater Tao le E eva t ion Map

for Jani^arj 3 1989

WELL

ERM IS

ERM 2S

ERM 3S

ERM 4S

ERM 5S

ERM 5D

Table 3

WATER GAUGING AND SURVEY DATA

MP ELEVATION

ft above MSL

86029

84387

82262

81995

82238

82237

DEPTH TO

WATER

ft below MP

9 10

3 46

160

348

9 00

100

TOTAL DEPTH

ft below MP

1345

1980

1620

17 75

WATER TABLE ELEVATION

ft above MSL

851 19

84041

82102

81647

813 38

82137

All measurements made on January 3 1989 by ERM

Frozen plug prevented measurement Depth to ice

The

Group

likely to exceed a couple of inches The difference in the depth to ice in ERM-5D and the depth to water in ERM-5S is about eight feet This represents a strong upward vertical gradient especially since ERM-5S is screened between 6 and 16 feet below grade and EKM-5D is screened between 27 and 32 feet below grade

Although ERM-5S and -5D are screened in similar strata based on sediment texture the blow counts increased considerably beyond 15 feet below grade indicating a tighter zone as described earlier The increased compaction with depth and the upward vertical gradient would tend to hinder the downward migration of dissolved contaminants in this area Dissolved contaminant flow is probably concentrated in the upper till layer due to these combined factors

Because of the difference in density between water and organic solvents a vertical gradient alone would not prohibit the downward migration of a DNAPL As discussed earlier however there is currently no evidence to indicate the presence of a DNAPL

344 Ground Water Quality

Organics

Table 4 is a summary of volatile organic concentrations in ground water (as determined by the VTDEC laboratory) from the on-site monitoring wells installed by ERM Figure 5 shows the generalized TCA plume at the site Five solvent-related compounds from the EPA Method 624 suite of parameters were identified in the overburden at the site Well ERM-5D was frozen above ground at the time of sampling and therefore no data is available

Of the six compounds detected at the site several are likely breakdown products of the more prevalent contaminants TCA is known to break down abiotically to 11-DCE and through biodegradation to 11-DCA The kinetics of the reactions favor the formation of 11-DCA It is likely that the remaining constituents trichloroethene (TCE) tetrachloroethene (PCE) and chloroform are virgin chemicals

The upgradient and downgradient wells EPJM-1S and -5S both had non-detectable readings of volatile organic chemicals This would indicate that no additional sources of ground water contamination exist upgradient of the disposal pit Although the non-detectable reading in ERM-5S indicates that considerable attenuation of contaminants has occurred between the disposal pit and beyond the fire pond it does not necessarily demonstrate that ERM-5S is the furthest downgradient advance of contaminants in ground water It is possible that the leading edge of contamshy

23 Thlaquo

Group

- -

Oi CO

00 IT) 0)

1 Q Q Q Q Q Q 2 2 222 2

sect w

rH

CO

CO en 3 vO CN co i P Q Q CN Q CN c sect 2 2 2 o w

e gti O SH O

CO o CO ^3 O gtpoundgt (N in 4J T3

CO ^ Crt rH in rd CO n OJ ^f ltN en M |

1 p bullgt - O O sect CO CO X) CO

W rH 0)

O wu

gti 4-) EH Q rH

C H o O O O o EH C O 2 CO ^f 31 O CN o gt o g O 01 [ rT rH rH T-J

1 P Q shy -0) ^ s 2 r- rH U3 in

K O o W rH

EH -H CD shyc lt X M CO o gtiT3

rH C

Q Q) rfl 3 2 amp CO P

i Q Q Q Q Q Q Ecc

O 01 0) rH OS 4-1 2 2 2 2 2 2 T3 O

sect0) C UO UX) CQ

0)

w (0

CO CO

4-1 2 o C O

-X O 4-gt

0) O C ampH O

2 en 03 W rH 0) 3 u rd C C 2 (d

o O I] (U a) x -H O c C 4-1 C rd rd CO 0) o U 0) X x o cu 0) SH a 4-J 4-1 lH C 4-gt ^ 4-) 0) Q) O Q) U O O TJ O o rH x 0) 4-1

QJ ^ gtH X 4-1 CO bullH g O o o cu

W O 4-1 gtH rH rH -H O O O -H Q -H ox XI rH r-l O o 2 4-gt HH O U EH O gt Ul

O P C O -H bullH 1 rH V) bull- 4-1 0 Q) U Q Q H x j OJ CO -H EH a 73 O 1 1 ~ O lt rH gt1

Z -H rH (H cH rH -H EH CL rH 3 o c x - -bull - SH O g rt3

o o P O ltH rH (H EH EH tlaquo C gt CO lt

Ths

wate 1 i no

1 ntsrm 1 tts stream

perennial strsam

Surface Wcw2r~ Sample

N 100

Mom tor irg We I

TCA (ODD) D or nondetsctacia

t Cancentnac

ERM F -e o Sea 1e ( Fee t )

New Erg lard 1nc

00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

tennis courts

S-l 1 1 ntsrml ttsrjlt stream

perannial stream

_EGEND

Surfccs Water Samp1e

fanitor(ng Wei 1

Water Table Elevatlor ~t above MSL)

Water Taole Contours

D1rect1 on of G^ourcwator F 1 ov

SCALE (feet)

bull00 280 300 400

N

ERM i gare 4 New Engona ~c

Tensi tor E i e c ^ r c n i c s Inc

Genera i zed

vater Tao le E eva t ion Map

for Jani^arj 3 1989

WELL

ERM IS

ERM 2S

ERM 3S

ERM 4S

ERM 5S

ERM 5D

Table 3

WATER GAUGING AND SURVEY DATA

MP ELEVATION

ft above MSL

86029

84387

82262

81995

82238

82237

DEPTH TO

WATER

ft below MP

9 10

3 46

160

348

9 00

100

TOTAL DEPTH

ft below MP

1345

1980

1620

17 75

WATER TABLE ELEVATION

ft above MSL

851 19

84041

82102

81647

813 38

82137

All measurements made on January 3 1989 by ERM

Frozen plug prevented measurement Depth to ice

The

Group

likely to exceed a couple of inches The difference in the depth to ice in ERM-5D and the depth to water in ERM-5S is about eight feet This represents a strong upward vertical gradient especially since ERM-5S is screened between 6 and 16 feet below grade and EKM-5D is screened between 27 and 32 feet below grade

Although ERM-5S and -5D are screened in similar strata based on sediment texture the blow counts increased considerably beyond 15 feet below grade indicating a tighter zone as described earlier The increased compaction with depth and the upward vertical gradient would tend to hinder the downward migration of dissolved contaminants in this area Dissolved contaminant flow is probably concentrated in the upper till layer due to these combined factors

Because of the difference in density between water and organic solvents a vertical gradient alone would not prohibit the downward migration of a DNAPL As discussed earlier however there is currently no evidence to indicate the presence of a DNAPL

344 Ground Water Quality

Organics

Table 4 is a summary of volatile organic concentrations in ground water (as determined by the VTDEC laboratory) from the on-site monitoring wells installed by ERM Figure 5 shows the generalized TCA plume at the site Five solvent-related compounds from the EPA Method 624 suite of parameters were identified in the overburden at the site Well ERM-5D was frozen above ground at the time of sampling and therefore no data is available

Of the six compounds detected at the site several are likely breakdown products of the more prevalent contaminants TCA is known to break down abiotically to 11-DCE and through biodegradation to 11-DCA The kinetics of the reactions favor the formation of 11-DCA It is likely that the remaining constituents trichloroethene (TCE) tetrachloroethene (PCE) and chloroform are virgin chemicals

The upgradient and downgradient wells EPJM-1S and -5S both had non-detectable readings of volatile organic chemicals This would indicate that no additional sources of ground water contamination exist upgradient of the disposal pit Although the non-detectable reading in ERM-5S indicates that considerable attenuation of contaminants has occurred between the disposal pit and beyond the fire pond it does not necessarily demonstrate that ERM-5S is the furthest downgradient advance of contaminants in ground water It is possible that the leading edge of contamshy

23 Thlaquo

Group

- -

Oi CO

00 IT) 0)

1 Q Q Q Q Q Q 2 2 222 2

sect w

rH

CO

CO en 3 vO CN co i P Q Q CN Q CN c sect 2 2 2 o w

e gti O SH O

CO o CO ^3 O gtpoundgt (N in 4J T3

CO ^ Crt rH in rd CO n OJ ^f ltN en M |

1 p bullgt - O O sect CO CO X) CO

W rH 0)

O wu

gti 4-) EH Q rH

C H o O O O o EH C O 2 CO ^f 31 O CN o gt o g O 01 [ rT rH rH T-J

1 P Q shy -0) ^ s 2 r- rH U3 in

K O o W rH

EH -H CD shyc lt X M CO o gtiT3

rH C

Q Q) rfl 3 2 amp CO P

i Q Q Q Q Q Q Ecc

O 01 0) rH OS 4-1 2 2 2 2 2 2 T3 O

sect0) C UO UX) CQ

0)

w (0

CO CO

4-1 2 o C O

-X O 4-gt

0) O C ampH O

2 en 03 W rH 0) 3 u rd C C 2 (d

o O I] (U a) x -H O c C 4-1 C rd rd CO 0) o U 0) X x o cu 0) SH a 4-J 4-1 lH C 4-gt ^ 4-) 0) Q) O Q) U O O TJ O o rH x 0) 4-1

QJ ^ gtH X 4-1 CO bullH g O o o cu

W O 4-1 gtH rH rH -H O O O -H Q -H ox XI rH r-l O o 2 4-gt HH O U EH O gt Ul

O P C O -H bullH 1 rH V) bull- 4-1 0 Q) U Q Q H x j OJ CO -H EH a 73 O 1 1 ~ O lt rH gt1

Z -H rH (H cH rH -H EH CL rH 3 o c x - -bull - SH O g rt3

o o P O ltH rH (H EH EH tlaquo C gt CO lt

Ths

wate 1 i no

1 ntsrm 1 tts stream

perennial strsam

Surface Wcw2r~ Sample

N 100

Mom tor irg We I

TCA (ODD) D or nondetsctacia

t Cancentnac

ERM F -e o Sea 1e ( Fee t )

New Erg lard 1nc

00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

WELL

ERM IS

ERM 2S

ERM 3S

ERM 4S

ERM 5S

ERM 5D

Table 3

WATER GAUGING AND SURVEY DATA

MP ELEVATION

ft above MSL

86029

84387

82262

81995

82238

82237

DEPTH TO

WATER

ft below MP

9 10

3 46

160

348

9 00

100

TOTAL DEPTH

ft below MP

1345

1980

1620

17 75

WATER TABLE ELEVATION

ft above MSL

851 19

84041

82102

81647

813 38

82137

All measurements made on January 3 1989 by ERM

Frozen plug prevented measurement Depth to ice

The

Group

likely to exceed a couple of inches The difference in the depth to ice in ERM-5D and the depth to water in ERM-5S is about eight feet This represents a strong upward vertical gradient especially since ERM-5S is screened between 6 and 16 feet below grade and EKM-5D is screened between 27 and 32 feet below grade

Although ERM-5S and -5D are screened in similar strata based on sediment texture the blow counts increased considerably beyond 15 feet below grade indicating a tighter zone as described earlier The increased compaction with depth and the upward vertical gradient would tend to hinder the downward migration of dissolved contaminants in this area Dissolved contaminant flow is probably concentrated in the upper till layer due to these combined factors

Because of the difference in density between water and organic solvents a vertical gradient alone would not prohibit the downward migration of a DNAPL As discussed earlier however there is currently no evidence to indicate the presence of a DNAPL

344 Ground Water Quality

Organics

Table 4 is a summary of volatile organic concentrations in ground water (as determined by the VTDEC laboratory) from the on-site monitoring wells installed by ERM Figure 5 shows the generalized TCA plume at the site Five solvent-related compounds from the EPA Method 624 suite of parameters were identified in the overburden at the site Well ERM-5D was frozen above ground at the time of sampling and therefore no data is available

Of the six compounds detected at the site several are likely breakdown products of the more prevalent contaminants TCA is known to break down abiotically to 11-DCE and through biodegradation to 11-DCA The kinetics of the reactions favor the formation of 11-DCA It is likely that the remaining constituents trichloroethene (TCE) tetrachloroethene (PCE) and chloroform are virgin chemicals

The upgradient and downgradient wells EPJM-1S and -5S both had non-detectable readings of volatile organic chemicals This would indicate that no additional sources of ground water contamination exist upgradient of the disposal pit Although the non-detectable reading in ERM-5S indicates that considerable attenuation of contaminants has occurred between the disposal pit and beyond the fire pond it does not necessarily demonstrate that ERM-5S is the furthest downgradient advance of contaminants in ground water It is possible that the leading edge of contamshy

23 Thlaquo

Group

- -

Oi CO

00 IT) 0)

1 Q Q Q Q Q Q 2 2 222 2

sect w

rH

CO

CO en 3 vO CN co i P Q Q CN Q CN c sect 2 2 2 o w

e gti O SH O

CO o CO ^3 O gtpoundgt (N in 4J T3

CO ^ Crt rH in rd CO n OJ ^f ltN en M |

1 p bullgt - O O sect CO CO X) CO

W rH 0)

O wu

gti 4-) EH Q rH

C H o O O O o EH C O 2 CO ^f 31 O CN o gt o g O 01 [ rT rH rH T-J

1 P Q shy -0) ^ s 2 r- rH U3 in

K O o W rH

EH -H CD shyc lt X M CO o gtiT3

rH C

Q Q) rfl 3 2 amp CO P

i Q Q Q Q Q Q Ecc

O 01 0) rH OS 4-1 2 2 2 2 2 2 T3 O

sect0) C UO UX) CQ

0)

w (0

CO CO

4-1 2 o C O

-X O 4-gt

0) O C ampH O

2 en 03 W rH 0) 3 u rd C C 2 (d

o O I] (U a) x -H O c C 4-1 C rd rd CO 0) o U 0) X x o cu 0) SH a 4-J 4-1 lH C 4-gt ^ 4-) 0) Q) O Q) U O O TJ O o rH x 0) 4-1

QJ ^ gtH X 4-1 CO bullH g O o o cu

W O 4-1 gtH rH rH -H O O O -H Q -H ox XI rH r-l O o 2 4-gt HH O U EH O gt Ul

O P C O -H bullH 1 rH V) bull- 4-1 0 Q) U Q Q H x j OJ CO -H EH a 73 O 1 1 ~ O lt rH gt1

Z -H rH (H cH rH -H EH CL rH 3 o c x - -bull - SH O g rt3

o o P O ltH rH (H EH EH tlaquo C gt CO lt

Ths

wate 1 i no

1 ntsrm 1 tts stream

perennial strsam

Surface Wcw2r~ Sample

N 100

Mom tor irg We I

TCA (ODD) D or nondetsctacia

t Cancentnac

ERM F -e o Sea 1e ( Fee t )

New Erg lard 1nc

00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

likely to exceed a couple of inches The difference in the depth to ice in ERM-5D and the depth to water in ERM-5S is about eight feet This represents a strong upward vertical gradient especially since ERM-5S is screened between 6 and 16 feet below grade and EKM-5D is screened between 27 and 32 feet below grade

Although ERM-5S and -5D are screened in similar strata based on sediment texture the blow counts increased considerably beyond 15 feet below grade indicating a tighter zone as described earlier The increased compaction with depth and the upward vertical gradient would tend to hinder the downward migration of dissolved contaminants in this area Dissolved contaminant flow is probably concentrated in the upper till layer due to these combined factors

Because of the difference in density between water and organic solvents a vertical gradient alone would not prohibit the downward migration of a DNAPL As discussed earlier however there is currently no evidence to indicate the presence of a DNAPL

344 Ground Water Quality

Organics

Table 4 is a summary of volatile organic concentrations in ground water (as determined by the VTDEC laboratory) from the on-site monitoring wells installed by ERM Figure 5 shows the generalized TCA plume at the site Five solvent-related compounds from the EPA Method 624 suite of parameters were identified in the overburden at the site Well ERM-5D was frozen above ground at the time of sampling and therefore no data is available

Of the six compounds detected at the site several are likely breakdown products of the more prevalent contaminants TCA is known to break down abiotically to 11-DCE and through biodegradation to 11-DCA The kinetics of the reactions favor the formation of 11-DCA It is likely that the remaining constituents trichloroethene (TCE) tetrachloroethene (PCE) and chloroform are virgin chemicals

The upgradient and downgradient wells EPJM-1S and -5S both had non-detectable readings of volatile organic chemicals This would indicate that no additional sources of ground water contamination exist upgradient of the disposal pit Although the non-detectable reading in ERM-5S indicates that considerable attenuation of contaminants has occurred between the disposal pit and beyond the fire pond it does not necessarily demonstrate that ERM-5S is the furthest downgradient advance of contaminants in ground water It is possible that the leading edge of contamshy

23 Thlaquo

Group

- -

Oi CO

00 IT) 0)

1 Q Q Q Q Q Q 2 2 222 2

sect w

rH

CO

CO en 3 vO CN co i P Q Q CN Q CN c sect 2 2 2 o w

e gti O SH O

CO o CO ^3 O gtpoundgt (N in 4J T3

CO ^ Crt rH in rd CO n OJ ^f ltN en M |

1 p bullgt - O O sect CO CO X) CO

W rH 0)

O wu

gti 4-) EH Q rH

C H o O O O o EH C O 2 CO ^f 31 O CN o gt o g O 01 [ rT rH rH T-J

1 P Q shy -0) ^ s 2 r- rH U3 in

K O o W rH

EH -H CD shyc lt X M CO o gtiT3

rH C

Q Q) rfl 3 2 amp CO P

i Q Q Q Q Q Q Ecc

O 01 0) rH OS 4-1 2 2 2 2 2 2 T3 O

sect0) C UO UX) CQ

0)

w (0

CO CO

4-1 2 o C O

-X O 4-gt

0) O C ampH O

2 en 03 W rH 0) 3 u rd C C 2 (d

o O I] (U a) x -H O c C 4-1 C rd rd CO 0) o U 0) X x o cu 0) SH a 4-J 4-1 lH C 4-gt ^ 4-) 0) Q) O Q) U O O TJ O o rH x 0) 4-1

QJ ^ gtH X 4-1 CO bullH g O o o cu

W O 4-1 gtH rH rH -H O O O -H Q -H ox XI rH r-l O o 2 4-gt HH O U EH O gt Ul

O P C O -H bullH 1 rH V) bull- 4-1 0 Q) U Q Q H x j OJ CO -H EH a 73 O 1 1 ~ O lt rH gt1

Z -H rH (H cH rH -H EH CL rH 3 o c x - -bull - SH O g rt3

o o P O ltH rH (H EH EH tlaquo C gt CO lt

Ths

wate 1 i no

1 ntsrm 1 tts stream

perennial strsam

Surface Wcw2r~ Sample

N 100

Mom tor irg We I

TCA (ODD) D or nondetsctacia

t Cancentnac

ERM F -e o Sea 1e ( Fee t )

New Erg lard 1nc

00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

- -

Oi CO

00 IT) 0)

1 Q Q Q Q Q Q 2 2 222 2

sect w

rH

CO

CO en 3 vO CN co i P Q Q CN Q CN c sect 2 2 2 o w

e gti O SH O

CO o CO ^3 O gtpoundgt (N in 4J T3

CO ^ Crt rH in rd CO n OJ ^f ltN en M |

1 p bullgt - O O sect CO CO X) CO

W rH 0)

O wu

gti 4-) EH Q rH

C H o O O O o EH C O 2 CO ^f 31 O CN o gt o g O 01 [ rT rH rH T-J

1 P Q shy -0) ^ s 2 r- rH U3 in

K O o W rH

EH -H CD shyc lt X M CO o gtiT3

rH C

Q Q) rfl 3 2 amp CO P

i Q Q Q Q Q Q Ecc

O 01 0) rH OS 4-1 2 2 2 2 2 2 T3 O

sect0) C UO UX) CQ

0)

w (0

CO CO

4-1 2 o C O

-X O 4-gt

0) O C ampH O

2 en 03 W rH 0) 3 u rd C C 2 (d

o O I] (U a) x -H O c C 4-1 C rd rd CO 0) o U 0) X x o cu 0) SH a 4-J 4-1 lH C 4-gt ^ 4-) 0) Q) O Q) U O O TJ O o rH x 0) 4-1

QJ ^ gtH X 4-1 CO bullH g O o o cu

W O 4-1 gtH rH rH -H O O O -H Q -H ox XI rH r-l O o 2 4-gt HH O U EH O gt Ul

O P C O -H bullH 1 rH V) bull- 4-1 0 Q) U Q Q H x j OJ CO -H EH a 73 O 1 1 ~ O lt rH gt1

Z -H rH (H cH rH -H EH CL rH 3 o c x - -bull - SH O g rt3

o o P O ltH rH (H EH EH tlaquo C gt CO lt

Ths

wate 1 i no

1 ntsrm 1 tts stream

perennial strsam

Surface Wcw2r~ Sample

N 100

Mom tor irg We I

TCA (ODD) D or nondetsctacia

t Cancentnac

ERM F -e o Sea 1e ( Fee t )

New Erg lard 1nc

00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

wate 1 i no

1 ntsrm 1 tts stream

perennial strsam

Surface Wcw2r~ Sample

N 100

Mom tor irg We I

TCA (ODD) D or nondetsctacia

t Cancentnac

ERM F -e o Sea 1e ( Fee t )

New Erg lard 1nc

00 200 300 400 Tansitor Electronics

Genera zed Plume Me TCA Ccncentnations and Dstnibution

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

ination in ground water is present to one side or the other of ERM-5S It is unlikely however that the plume is travelling beneath ERM-5S because of the upward vertical gradients and the lack of any field VOC detections in split spoon sediments from ERM-5D as discussed earlier

ERM-2S immediately downgradient of the disposal pit had the highest total volatiles concentration of all the monitoring wells at 105400 ppb Over 90 percent of this concentration was due to TCA (96100 ppb) The remaining compounds were 11-DCA trichloroethene (TCE) and 11-DCE

Although well below the solubility limit of 1500000 ppb for TCA the potential presence of a DNAPL at the disposal pit can not be ruled out As discussed earlier however the field screening of split spoon samples from the ERM-2S boring indicated non-detectable levels (less than 01 ppm) above the clay layer which would not imply the presence of a DNAPL at this location Additional work is required in this area to further evaluate the potential presence of a DNAPL

Wells ERM-3S and -4S located northeast and northwest of the firepond respectively had respective total VOC concentrations of 8955 and 28 ppb This is most likely due to their relative proximity to the source area As shown in Figure 5 ERM-3S is closer to the source area

The various constituents detected at the site are generally found in the same proportions as follows

Constituent Approximate Percentage ()

111-trichloroethane 92 11-dichloroethane 6 11-dichloroethene 2 trichloroethene 01

A couple of exceptions exist to this general relationship Surface water sample S16 had a higher percentage of TCA (96) and a lower percentage of 11-DCA (14) indicating that degradation of the TCA to 11-DCA had not occurred to the same extent as in other areas ERM-4S also had different proportions of TCA and 11-DCA than normally detected This difference may be due to the lower level of detection at this location or the dispersion characteristics of TCA versus 11-DCA

Only ground water from ERM-2S and -3S exceeds MCLs Concentrations at ERM-4S are below MCLs with respect to TCA and 11-DCA the only constituents detected at this location

26 Thlaquo

Group

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

Inorganics

None of the priority pollutant metals exceeded MCLs in any of the monitoring wells The predominant constituents were Chromium Copper and Zinc although Cadmium Nickel Lead and Mercury were detected in low concentrations in various samples All inorganic lab data are presented in Appendix D The original organic laboratory sheets were not available at the time of completion of this report

345 Summary of Hydrogeology and Water Quality

Since surface water sampling points have not been standardized at the site it is difficult to establish surface water quality trends over time In the January 1989 sampling event only sample S-16 in the on-site intermittent stream behind the manufacturing building had concentrations above MCLs Future sampling will address this area

The hydrogeologic zones defined during ERMs preliminary investigation include

an upper surficial glacial till layer which has been disturbed possibly by a slumping event resulting in a lower compaction and probable higher permeability than the underlying sediments

a lower glacial till layer similar in texture to the upper till layer but more highly compacted and likely less permeable than the upper till layer and

a glacio-lacustrine clay of low probable permeability which appears to be continuous between ERM-2S and ERM-5D

It appears that the bulk of dissolved contaminant flow is confined to the upper till layer due to its lower compaction and likely higher permeability however concentrations of VOCs were detected in split spoon samples from the lower till layer in borings ERM-2S and -5D An upward vertical gradient exists at the ERM-5SD well pair If data obtained in future sampling events supports existing data which does not indicate the presence of a DNAPL it is likely that dissolved contaminant flow would remain primarily in the upper till zone

Although additional characterization is warranted on either side of the ERM-5S5D well pair it is probable that the firepond

27 The

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

is acting as a significant discharge point for VOCs Future characterization efforts will examine the downgradient edge of the plume in greater detail

Bedrock was not encountered in any borings Likewise bedrock outcrops were not observed on site The closest outcrops observed were on the northern face of Whipstock Hill far upgradient from the site

35 Preliminary Exposure Assessment

ERM contracted Alceon Corporation to perform an exposure assessment Alceon personnel inspected the site on February 16 1989 The six potential exposure points identified are

contaminated soils at the former disposal pit

ground water seeps to the firepond

- the firepond

the perennial stream south of Route 9

the intermittent stream north of the manufacturing building and

ground water downgradient of the disposal pit

Follow-up sampling events will address these areas in greater detail A more comprehensive exposure assessment will be submitted following receipt of the second round of ground water samples which includes residential water supply and additional surface water sampling

28 Tho

_ Group

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

APPENDIX A

SITE HISTORY

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

Appendix A

Detailed Site History

In order to comply with the requirements of CERCLA Section 103(c) Tansitor notified EPA on May 20 1981 of the following

organic solvent and acid wastes were disposed in an open 500 square foot area between sometime after 1956 and late 1978 or early 1979 and

these wastes consisted principally of spent electrolyte containing borate and acetate salts in organic solvent systems Some acidic solutions of dilute silver nitrate and palladium chloride were also disposed of

The Vermont Agency of Environmental Conservation (now the Department of Environmental Conservation or DEC) initially visited the Tansitor site in October 1982 An in-house memo dated October 26 1982 indicated that the DEC did not feel that State or Federal action was required but that aesthetic impacts should be corrected

In June 1983 the DEC notified Tansitor that all waste solvents silver nitrate palladium chloride and borateacetate salt electrolytes would have to be managed as hazardous waste and disposed off site at State- and Federal-approved facilities Also Tansitor was asked to remove all drum remnants and other solid wastes from the ground surface

In July 1983 the DEC concluded in a letter to Tansitor that the volumes and toxicities of the constituents known to have been disposed at the site did not warrant a Federal or State investigation As a precautionary measure however the DEC recommended additional studies which included

mapping of the disposal area

selection of six soil sampling locations with composite analysis of one sample for trichloroethane palladium silver and tantalum and

submission of results to the DEC

In November 1983 Tansitor reported to the DEC that the DECs recommendations had been implemented in August 1983 with some amendments A site map was provided indicating the area of

ii Thlaquo

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

disposal and surface scrap was removed Instead of performing one composite soil analysis for the four recommended constituents six separate soil samples from the disposal area collected between the interval of six and 18 inches were analyzed for a variety of parameters The summary of results of this sampling are as follows

Parameter Range of Values

PH 628 - 835 Nitrogen 01 - 65 mgkg Silver lt 001 - 063 mg1 Tantalum all lt 005 mg1 Palladium all lt05 mg1 Boron lt 001 - 061 mg1

Parameter Actual Detections in six soil samples (uqkq)

Methylene Chloride 13 170 Acetone 72 5800 Chloromethane 900 Bromomethane 20 11-Dichloroethene 14 15 1300 3000 65000 11-Dichloroethane 16 340 Chloroform 68 Tetrachloroethene 27 550 590 Toluene 46 Trichloroethene 13 15 940 o-Xylene 10 mp-Xylene 21 Freon TF 20 12-Dichloroethane 90 111-Trichloroethane 17 140 990 3600 44000 1000000

In addition Tansitor also sampled their on-site drinking water well in August 1983 and all organic constituents were at non-detectable concentrations These results were submitted to the DEC in January 1984 The DEC resampled the Tansitor supply well in January 1984 and reported 11 parts per billion (ppb) of methylene chloride 90 ppb of 12-Dichloroethane and 40 ppb of 111-Trichloroethane (TCA) The adjacent Cutler and Severs wells indicated non-detectable levels for EPA Method 601 amp 602 parameters

Follow-up sampling of the Tansitor well and the tap water on February 7 and 14 1984 did not detect the presence of volatiles No samples collected since then have ever detected volatiles Since VOCs were only reported once it is likely that this detection was a false positive or is indicative of lab error

111

Group

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

The DEC notified Tansitor in March 1984 that results collected on March 8 1984 indicated that on-site wells did not show detectable concentrations of organics A ground water seep upgradient of the on-site fire pond was found to have elevated concentrations of halogenated organics The DEC recommended a more in-depth study of the disposal area

A Preliminary Assessment was Conducted in April 1984 by the DEC and submitted to the EPA in May 1984 None of the drinking water sources in the area had detectable concentrations of organics and an investigation was therefore postponed Ground and surface water quality degradation was noted however as was the absence of security measures around potential points of exposure (eg Fire pond)

In May 1984 the DEC collected samples from the Fowler Cutler and Ertell residences as well as from the Vermonter Motel and Tansitors supply well All readings were non-detectable At that time the DEC recommended the following four activities

1 restrict access to the Fire pond and disposal area

2 define the lateral and vertical extent of contaminated soil at the disposal site

3 remove contaminated soils for off-site disposition and

4 design and implement a monitoring program and remedial action if appropriate

In response to the May 29 1985 letter from Thomas Moye of the VTDEC to Stuart Libby of Tansitor Tansitor proposed in June 1985 to

1 erect a security fence around the Fire pond and disposal area

2 select a consultant for performance of monitoring activities and

3 defer soil removal action until completion of monitoring activities

The EPAs contractor documented a series of calls in December 1986 These communications cove severed ral issues as follows

IV

Thlaquo

Group

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

the Vermonters Organized for Cleanup (VOC) found through interviews with residents that there were no recreational uses of the stream downgradient of the Tansitor site

the Vermont field office of the Nature Conservancy noted that no Federal- or State-listed endangered species exist downgradient of the Tansitor site and

the Vermont Department of Health indicated that there were no surface water intakes downgradient of the Tansitor site

The EPAs contractor prepared a Site Inspection (SI) report in January 1987 This report concluded that a potential problem existed and that further characterization was warranted

The DEC visited the site in August 1987 and installed a metal piezometer in the Fire pond A hole was subsequently dug adjacent to the pond and the water table was allowed to equilibrate in the hole Measurements of water level in the piezometer and in the pond relative to the pond water level indicated an upward gradient in the ground water causing recharge into the pond This information was interpreted to indicate that the seeps north of the firepond represent an intersection of the water table with ground level

The EPAs contractor completed the Hazard Ranking Score (HRS) for the site in September 1987 The HRS of 3572 was above the 285 threshold value which makes a site eligible for listing on the CERCLA NPL

In January 1988 the DEC presented the CERCLA status of the Tansitor site to the Bennington Board of Selectmen A follow-up letter in June 1988 provided further information to the Board of Selectmen regarding the CERCLA process

An EPA in-house memorandum dated June 20 1988 described briefly the rationale for including the Tansitor site as a proposed NPL site Since Tansitor is only a RCRA small quantity generator the site is not subject to RCRA Subtitle C corrective action and therefore falls under the purview of CERCLA The Tansitor site was formally listed in the Federal Register as a proposed NPL site on June 24 1988

Tansitor sampled several surface water locations in April 1988 as well as a tap water sample from Tansitor and a well sample from the Fowler residence All results are summarized in Appendix B To date no contamination has been found in any

Thlaquo

Group

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

drinking water well near the site or at any location beyond the Tansitor property

Tansitor submitted comments on the proposed NPL listing to EPA on August 10 1989 To date the site has not been added to the final NPL

VI The

Group

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

1 1 APPENDIX B

HISTORICAL WATER QUALITY DATA

a

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

Page 1 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Key to Chemical Abbreviations

OCM dichloromethane or methylene chloride

TCM trichloromethane or chloroform

PCE tetrachloroethene or perchloroethene

12-DCA 1 2-dichloroethane

TCA 111 - trich lor oe thane

11 -DCE 1 1-dichloroethene BDCM bromodichloromethane

11 -DCA 1 1-dichloroethane 1 12-TCA 112-trichloroethane

TCE trichloroethene t- 1 2- DCE trans -1 2-dichloroethene

Sampling Date August 5 1983

| Sampling 1 Sample | | Method of | | | Location | Type | Analysis Results | Sampler| |

bdquobdquo |I

| Tansitor Tap | tap water |Tansitor |EPA 601 | All parameters NO | l II I | Tansitor Tap | tap water |Tansitor |pesticides | All parameters ND |

Sampling Date January 20 1984

| Sampling | Sample | jMethod of |

| Location | Type Sampler Analysis | Results |

Tansitor Tap | tap water | VT DEC |EPA 601 | DCH 11 UGL |

I I | 12-DCA 9 |

I I I | TCA 4 |

I | Tansitor Tap | tap water VT DEC EPA 602 | Al l parameters NO |

I | Cutler Uel 1 | groundwater VT DEC EPA 601 | A l l parameters ND | i1 i

Cutler Uel 1 | groundwater | VT DEC ] EPA 602 | All parameters ND

bullI1

Severs Uel 1 | groundwater | VT DEC j EPA 601 | All parameters ND lI

Severs Uel 1 | groundwater | VT DEC EPA 602 | All parameters ND |

Trip Blank | lab water | VT DEC EPA 601 | All parameters ND |

1 | Trip Blank lab water | VT DEC | EPA 602 A l I parameters ND

The

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

Page 2 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

Sampling Date

Sampling

Location

Tansitor Well

Tansitor Tap

Sampling Date

SampI ing

Location

Tansitor Uel I

Tansi tor Uel I - _

Tansitor Tap

Tansitor Tap

Sampling Date

Samp I ing

Location

Tansitor Wei I

dupl icate

spl i t

Tansi tor Tap

dupl icate

spl it

S1

S2

(Continued)

February 7 1984

| Sample

| Type

| grounduater

| tap water

| | Method of |

| Sampler | Analysis

|Tansitor | EPA 601 |

|Tansitor | EPA 601 |

February 14 1984

| Sample | | Method of |

| Type | Sampler | Analysis |

|

| Results |

All parameters ND |

I All parameters ND |

|

Results | raquobdquobdquoraquobdquoraquobdquobdquolaquolaquobdquolaquo|

| grounduater

| groundwater

| tap water

| tap water

March 8 1984

Sample

Type

groundwater 11

11

tap water 11

11

surface water

surface water

| VT DOH | EPA 601 | All parameters below MDL | _ _ _ _ _ _ _ i

I | VT DOH | EPA 602 | A l l parameters below MDL |

i 1

| VT DOH | EPA 601 ] All parameters below MDL | __ - - - _ _ _ _ _ - _ _ _

I

| VT DOH | EPA 602 | All parameters below MDL |

Sampler

VT DEC

Tansi tor

VT DEC

ii

Tansi tor

VT DEC

VT DEC

Method of

Analysis

EPA 601 M

11

EPA toOl 11

1 1

EPA 601

EPA 601

All

Al I

All

A 1 1

Results

parameters NO H 11

parameters ND ii 11

parameters ND

parameters ND

The

Group

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

Page 3 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date March 8 1984 (continued)

Sampling Sample Method of I Location Type Sampler Analysis Results |

raquobullraquoraquobdquogtbdquobdquobdquobdquobdquobdquo

S3 surface water VT DEC EPA 601 DCM 69 UGL |

11-DCE 1380 |

11-DCA 127 | TCM 17 | 12-DCA 30 |

TCA 15100 | TCE 83 | 112-TCA 72 |

PCE 125 | _ _ _ i

S4 | surface water | VT DEC | EPA 601 | bull All parameters ND |

i1 S5 | surface water | VT DEC | EPA 601 | All parameters ND |

_ i1

trip blank | lab water | VT DEC | EPA 601 | All parameters ND |

Sampling Date April 4 1984

Sampling | Sample | Method of | 1 Location | Type Sampler Analysis | Results |

bdquobdquobdquo |

S3 | surface water | VT DEC [ EPA 601 | 11-DCE 2350 UGL |

I I I 11-DCA 123 raquo |

Time of Collection = 1310 | TCA 74200

I I TCE 93 |

57 bullbull |

I I I duplicate | | 11-DCE 1700 UGL

| | 11-DCA 164 |

Time of Collection = 1320 | TCA 139 |

I I TCE 111 |

I I I PCE 702 |

I S3 | surface water VT DEC EPA 602 All parameters ND |

The

roup

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

Page 4 of 12

Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Samp I ing Sample | Method of I

Location Type Sampler | Analysis Results |

-I

S6 surface water VT DEC | EPA 601 11 -DCE 446 UGL |

I 11 -DCA 22 |

TCA 29000 | II

spli t II Tansitor | DCM 95 UGL

TCM 76 bull |

I 12-DCA 122 |

I TCA 36328 |

I BDCM 14

I TCE 58

I PCE 37

11 -DCA 41

I 11 -DCE 190 |

112-TCA 28 lI

iI

dupl icate I DCM 99 UGL |

| TCM 81

| | 12-DCA 136 |

I I TCA 38834 |

| | BDCM 18 |

I I TCE 65 |

I I PCE 39

1 1 1 11 -DCA 42 |

I I I U -DCE 192 |

1 1 I I I 112-TCA Tl bull I I shy mdash

| S6 | surface water | VT DEC | EPA 602 | All parameters ND

s p l i t | Tansitor | | dupl i cate I i II

The

Group

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

Page 5 of 12 Table 1 Sunmary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 4 1984 (continued)

Sampling | Sample | Method of |

Location | Type | Sampler Analysis | Results

S7 | surface water | VT DEC EPA 601 | 11 -DCE 15 UGL

I I | 11 -OCA 19 ||

I I | t-12-DCE 2 II

| TCA 612 I I II

t 1

1 1 split | | Tansitor | TCA 435 UGL

| BDCM 3 1 1 1 | TCE 3 5

1 1 | PCE 22 raquo

1 1 II

1 1

| 11 -DCA 16

1 1 | 11-DCE 4 5 raquo

1 I | t -1 2 -DCE 23

S7 | surface water | VT DEC | EPA 602 | All parameters ND ii split | | Tansitor | |

S3 | surface water | VT DEC EPA 601 | 11 -OCE 6 UGL n1 I I I 11 OCA 2 n| TCA 354 I I

I I 1

I I 1 split | | Tansitor 11 | TCA 308 UGL

I 1 1 1 1J OCA 1 4

I I | 11-DCE 1 7

S8 | surface water | VT DEC | EPA 602 | All parameters NO

split | |Tansitor | | n

trip blank lab water VT DEC EPA 601 All parameters ND

trip blank lab water | VT DEC | EPA 602 All parameters HD

Thlaquo

Group

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

Page 6 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified (Continued)

Sampling Date June 1 1984

Sampling Sample | Method of |

Location Type | Sampler Analysis | Results

S3 surface water (Tansitor EPA 601 | DCM 85 UGL

| | TCH 44

| | 12-DCA 52

| | TCA 32340

| | TCE 35

| | PCE 24

| | Toluene 25

| | 11 -OCA 43

| | 11-DCE 127

| | 112-TCA 121

S3 | surface water |Tansitor | EPA 602 | All parameters ND

Sampling Date March 29 1985

Sampling | Sample | Method of |

Location | Type | Sampler | Analysis | Results bdquoraquo |

S2 | surface water |Tansitor | EPA 601 DCM 11 UGL

1 I I 1 T C M 11

1 1 1 TCA 141 - shy - shy I

S2 | surface water | Tansitor | parameters ND EPA 602 | All

S3 | surface water (Tansitor EPA 601 DCM 239 UGL

| I | TCM 69

| | | 12-DCA 82

| | ] TCA 30340

| | I TCE 395

| | PCE 185

| | BDCM 538

| | | DBCM 693

| | | 11-DCA 1236

| | i 11-DCE 212

| 112-TCA 538

S3 surface water [Tansitor EPA 602 | 13-DCB 1 2 UGL

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

Page 7 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date March 29 1985 (continued)

SampI ing | Sample | | Method of|

Location | Type | Sampler | Analysis | Results

S5 | surface water |Tansitor | EPA 601 | BDCM 14 UGL

I I I I 112-TCA 1 4

S5 | surface water |Tansitor | EPA 602 | arameters ND All p

S7 | surface water | Tansitor | EPA 601 | DCM 16 UGL

I I I I TCA 312

I I I I T C E 24

I I I I PCE 22

I I I I BDCM 28

I I I I 11 -DCA 216 raquo

I I I I 11-OCE 56

I I I I t-12-DCE 25

I I I I 112-TCA 28

S7 | All p surface water |Tansitor | EPA 602 | arameters ND

S9 | surface water (Tansitor | EPA 601 | 11 -DCA 2 UGL

I I I I TCA 121

S9 | surface water |Tansitor | EPA 602 All parameters ND

Tansitor Well | groundwater |Tansitor | EPA 601 DCM 74 UGL

Tansitor Well | groundwater |Tansitor | EPA 602 Al I parameters ND

Sampling Date April 26 1985

| Samp Iing Sample | | Method of

Location Type | Sampler | Analysis Results

S5 surface water iTansitor EPA 601 11-DCA 38 UGL

1 1-DCE 1

t - 1 2-DCE 16 bullbull

TCA 236

TCE 11

I

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

Page 8 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 26 1985 (continued)

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results |bdquolaquolaquoraquolaquolaquolaquobdquolaquobdquolaquobdquolaquolaquolaquoraquolaquolaquolaquolaquolaquolaquo | Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND |

I mdashI | Fowler Well | groundwater |Tansitor | EPA 602 | All parameters ND |

I I | Brown Well | groundwater |Tansitor | EPA 601 | All parameters NO |

I mdash I | Brown Well | groundwater |Tansitor | EPA 602 | All parameters ND |

Sampling Date April 29 1985

| Sampling | Sample | | Method of | |

| Location | Type | Sampler | Analysis | Results | Ilaquolaquolaquolaquolaquolaquolaquolaquo|

| Tansitor Tap | tap water |Tansitor | EPA 601 | All parameters NO |

I I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters NO |

Sampling Date May 1 1985

| Sampling | Sample | | Method of ] |

| Location | Type | Sampler | Analysis | Results |I | Tansitor Tap | tap water |Tansitor | EPA 601 | A l l parameters NO

I | Tansitor Tap | tap water |Tansitor | EPA 602 | All parameters ND |

Sampling Date May 3 1985

| Sampling | Sample | Method of | |

| Location | Type | Sampler | Analysis | Results | I bull^ I

Tansitor Tap | tap water jTansitor | EPA 601 | All parameters ND |

|

Tansitor Tap | tap water jTansitor | EPA 602 | All parameters ND |

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

Page 9 of 12 Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date May 21 1985

| Sampling | Sample | |Method of I

| Location | Type | Sampler |Analysis I Results

I I S3 | surface water | VT DEC|EPA 601 | 11-DCE 1780 UGL

I I I I | 11 -OCA 50

I I I I | TCA 90500

I I I I | TCE 50 iI

bdquo _ _

I S3 | surface water | VT DEC |EPA 602 | All parameters NO iI | S8 | surface water | VT DEC |EPA 601 | 11-DCE 3 UGL

I I I I | 11 -DCA 6

I I I I | TCA 133 l| bdquo

| S3 | surface water | VT DEC|EPA 602 | All parameters NO lI | S9 | surface water | VT DEC|EPA 601 | 11-DCE 2 UGL

I I I I | 11-DCA 5

I i I I | TCA 101

I | S9 | surface water | VT DEC|EPA 602 | All parameters ND

I | S10 | surface water | VT DEC |EPA 601 | All parameters ND

I | S10 | surface water | VT DEC |EPA 602 | All parameters ND

1 | S11 | surface water | VT DEC |EPA 601 | All parameters ND II

| S11 | surface water | VT DEC |EPA 602 | All parameters ND 11

_

| S12 | surface water | VT DEC |EPA 601 | All parameters ND

I | S12 | surface water ] VT DEC | EPA 602 | All parameters ND

I | S13 | surface water | VT DEC |EPA 601 | All parameters ND

I | S13 | surface water | VT DEC|EPA 602 | All parameters ND

I ~ | SH | surface water | VT DEC |EPA 601 | Al l parameters ND _ _I

_

| S14 | surface water | VT DEC ]EPA 602 ] All parameters ND

The

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

Page 10 of 12

Table 1 Summary of Existing Sampling Results from the Tansttor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date Hay 21 1985 (continued)

Sampl ing | Sample Method of I I Location 1 Type | Sampler Analysis Results I

S15 | surface water | VT DEC EPA 601 11 -DCA 5 UGL | - _ _ - _ - _ lI

S15 | surface water | VT DEC EPA 602 A l l parameters ND | 1 I

Tansi tor Wei I | groundwater | VT DEC EPA 601 A l l parameters ND | - - - II

Tansi tor Wei I | groundwater | VT DEC EPA 602 All parameters ND |

11

VT Motel Well | groundwater | VT DEC EPA 601 All parameters ND | I1

VT Motel Well | groundwater VT DEC EPA 602 All parameters NO | t 1

Cutler Well | groundwater | VT DEC EPA 601 All parameters ND | 1 1

Cutler Well | groundwater | VT DEC EPA 602 Al l parameters NO | 11

Fowler Well | groundwater VT DEC EPA 601 All parameters NO | I 1

Fowler Well | groundwater VT DEC EPA 602 All parameters ND | I1

Ertell Well | groundwater | VT DEC EPA 601 A l l parameters ND 11

Ertell Well | groundwater | VT DEC EPA 602 All parameters ND |

Sampl ing Date July 3 1985

Sampl ing | Sample Method of 1 Location I Type Sampler Analysis Results

| S1 | surface water [Tans i tor EPA 601 12-DCA 1 3 UGL |

t 1

SI | surface water | Tansi tor EPA 602 A l l parameters NO | I 1

East of S3 surface water | Tansi tor EPA 601 A l l parameters ND

East of S3 surface water | Tansi tor EPA 602 All parameters ND

The

4 ~1 35

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

Page 11 of 12 (Continued) Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Sampling Date

Sampling

Location

Ryan Well

Ryan Well

Tansitor Tap

Tansitor Tap

Sampling Date

Sampl ing

Location

S3

S3

S5

S5

S7

S7

S9

S9

Tans i tor Tap

Tans ) t or Tap

Concentrations (ppb) at various locations on date specified

July 8 1985 (continued)

| Sample | | Method of

| Type | Sampler | Analysis Results

| groundwater [Tansitor EPA 601 | All parameters ND |

I ] groundwater |Tansitor EPA 602 | All parameters NO

tap water [Tansitor EPA 601 | Benzene 11 UGL

tap water |Tansitor EPA 602 | All parameters HO

July 29 1986

Sample Method of

Type | Sampler Analysis Results

surface water |Tansitor EPA 601 DCM 260 UGL

I TCM 216

TCA 761

I 11 -DCA 505

surface water |Tansitor EPA 602 Chlorobenzene 35 UGL

surface water | Tansitor EPA 601 11 -DCA 1 UGL

I I TCA 13

surface water Tansitor EPA 602 A l l parameters ND

surface water |Tansitor EPA 601 Chloroethane 105 UGL

TCA 181

11 -DCA 227

11 -OCE 42

surface water Tansitor EPA 602 A l l parameters ND

surface water [Tansitor EPA 601 11-OCA 72 UGL

TCA 343 I

surface water |Tansitor EPA 602 A l l parameters ND

tap water |Tansi tor EPA 601 A l l parameters ND

tap water | Tansitor EPA 602 A l l parameters ND

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

Page 12 of 12

Table 1 Summary of Existing Sampling Results from the Tansitor Site and Surrounding Properties

Concentrations (ppb) at various locations on date specified

(Continued)

Sampling Date April 6 1988

Sampling | Sample I I Method of |

Location I Type | Sampler|Analysis | Results

S2 | surface water | Tansi tor |EPA 601 | TCA 5 UGL

S2 | surface water |Tansitor | EPA 602 | All parameters NO

S3 | surface water | Tansi tor |EPA 601 | TCA 291 UGL

I I I | 11 -DCA 27

I I I | 11-DCE 21

S3 | surface water |Tansitor | EPA 602 | All parameters NO

S5 | surface water |Tansitor| EPA 601 | All parameters NO

S5 | surface water | Tansi tor |EPA 602 | All parameters WD

S7 | surface water | Tansi tor |EPA 601 | 11-DCE 15 UGL

I I I | TCA 245

S7 | surface water | Tansi tor |EPA 602 | All parameters ND

S9 | surface water |Tansitor | EPA 601 | TCA 125 UGL

S9 | surface water | Tansi tor|EPA 602 | All parameters NO

Fowler Well | groundwater |Tansitor | EPA 601 | All parameters ND

Fowler Uel I | groundwater | Tansi tor |EPA 602 | All parameters ND

Tansi tor Tap | tap water |Tansi tor EPA 601 | All parameters NO

Tansi tor Tap | tap water | Tansi tor EPA 602 | All parameters ND

trip blank | lab water |Tansitor | EPA 601 | All parameters NO

trip blank | lab water |Tansitor EPA 602 | All parameters 4D

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

APPENDIX C

DRILLING LOGS

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

Drl 1 1 ing Log Page 1 of 1

We 1 1 Number - New England inc Map

P-oject Tans l to r Elec t ronics Project f 112-01

C 1 I 3 n c Tans i to r Electronics Log by D Vesper

D r I I 1 1ng Co Catoh D r 1 1 l a r M i k e Crosby

Date Started 2988 Date F 12988

Lccat en Rt 9 Bennington Vt

D r i l l i n g Method HSA 425 1C

Screen shy Diamete r Length 10 Slot Slze_^a22 Notes

as 1 ng shy Diameter Length 83 Type Sta 1 n 3orlng Depth 1 7 Wei 1 Depth Bor 1 ng D 1 o 6 SurFace E1ev 858 1 3 Measuring Point E leva t ion 860 29

leasunng Po in t top inner stainless p ipe

SamD 1 BiGraoh t c Descr let onSo 1 1 C lass 1 F icat i on S lowcounts W e i 1N [_Dg Numbeishy par B inches Hc CColoi- Texture Structures)

and Deoch

Grab sample Brown silt and clay isgsl - trace coarse sand trace fine gravel Shale quartz Fragments SH 24 hour headspace 2 ppm

32 2-8-12-171 1

Tan brown silt and clay trace coarse-medlum-fme sand tnace fine gnavel Shale fnagments Dry HNU ND 24 hour headspace ND

_ Wet zone

0-14-21-23

3

r~an brown silt and clay trace shybull coarse-mediurn-fine sand trace shy1-rned i urn-f i ne gravel Shale fragments Top 03 wet others dr_ HNU ND 24 hour headspacs ND

_je mdash mdashshy bull mdash

O _laquo- mdasht1^

54 traceshygravel

bull ^ par t ings

28 tan brown cay and s i l t ~~xr ss s 1 r~id t mdash ~~ bullmdash mdashgto r SP ~ ~

35 gray clay and si r r l re sand Dry HNU ND

_24 hour headspace ND

53-38-21 -28 sam

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

D r l 1 1 ing Log

W a l l Number ERM-2S ERM - New EFIQ 1 and Inc

Tansl tor Elec t ronics Project Project No 112 -01

Tansl tor Electronics LoQ by D Vesper C 1 l e n t

Dr 1 1 ing Co ^aton D r l 1 l e r M i k e Crosbu

Date Started 1 12988 Data Finished 12288 Rt 9 Bennington Vt _ocation D r i l l i n g Method HSA rotary

Screen - Diameter Length 10 Slot Sizs 020 as 1ng - Diameter Length 9 5 Type sta 1 n

] 3orlng Depth 62 W e l l Depth Boring D l a 4 Surface E1sv 841 91 Measuring Point Elevat ion 843 87

Measuring Point top inner stainless p ipe

Samp I Q Graph Ic B1awcounts DaptH Loo Wai I Number RBC

par B t nchas and Depth

Page 1 oF 3

Map

disposa

Notes s ^ amp bull ID 8 12 OD HSA to 34 5 78 tricons a i r -rotary to 39 3 78 trlcone wash rotary

to 62 4 casino to 39

DescrictIonSol I Classification

(Color Toxture Structures)

4-7-6-6 Brown silt and clay trace medlum-Flne sand Roots Wet

04 24 hour headspace ND

r~=53

Tan brown clay ana s i l t trace 3-3-7-8 coarse-med1um sand trace- F i n e

bullg-avel Shale Fragments Mois t 1 3 24 hour headspace (peak) gt= 100 ppm

7 Sii o _euroHSEH

Tan brown s i l t and c lay and m e d i u m shy24-23-34-40 F i n e gravel l i t t l e coarse-medium sand Shale Fragments Moist

niS3 1 3 24 hour headspacs ( p e a k ) 700 ppm

32-31 -38-3(4 ray clayeg s l i l i t t l e ~ i e i a ~ i -F l ne grave trace coarse - ned1 sand Shale Fragments Dry

1 24 hour headspace (peak) 85

8-59-28-301 Tan clayey s i l t and coarse-mediumshy-Fine gravel Shale Fragments Dr Dry shy

-j 24 hour headspace (peak) 4 ppn

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

ERM - Nsw England inc Dr111lng LOQ Notes Project Tans I tor

Wei 1 No ERM-2S Project No 12-01 L 9 byPage 2 of 3 deg D Vesper

DescriptionSoil ClosBl f icatlon Sample Graphic Blowcounts Rac Lou Numbsr (Color Taxtura Structures)

por 6 1 nchos ond Depth

HS r )gB shybull24shy

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

Dri11 ing Log ERM - Now Eng1and 1nc

Wei 1 No ERM-2S

Page 3 of 3

Jeoth

Project Tansttor Project No 1 1 2-01 Log by D Vesper

BLowcounte

par B inches

(cant)

9-12-14-17

3-27-42-60

Roc

Motss

DescriptionSoil C1 asslFlcab I on

(Color- Tsxtura Structures)

(Cont see previous page)

Orange sl1tg clay traceshy1 5 -coarse-mediam-Fine sand Moist

OVA ND 24 hour headspace ND

Orange clay and s i l t trace -nedlum-flne sand Moist 24 hour headspace ND

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

Dr 1 1 1 l ng Log Page 1 of 1

W e l l Number ERM-3S ERM - New England inc Map

Project Tans 1 tor Electronics p -h Nn 112 -01 deg13Braquo bullraquo roje

C l lent Tansi tor Electronics ( D Vesper ^ ^^raquo og b f l r o 1 t

DondDr l 11 ing Co Catoh Dr i l l ar M i k e Crosby V^ ( ^-c

Date Started 1 2888 Date r in i^hpd 12888 raquos raquo J ^

Rt 9 Bennington Vt rgtrtl ^alt^Locat 1 on ing Method HSA 4 25 1C JJ^~~3 _

Screen - D l amet sr 2 1 Rngth 10 Slot Size 020 Notes

Cas 1 ng - D 1 amet =r 2 Length 8 3 TUPS S_ta 1 n steel 3or 1 ng Dept h 20 W e l l Depth 1 6 Borlno D l a 6 Surface E le v 820 74 Measur 1 ng 3olnt

ensuring P = int top 1 nr ier s t a i n l e 2SS p ipe

Samp 1 a Braohlc Dsscr lot IonSol 1 C lass I F icat i on Blowcounts 3spth Loo Wei 1 Number Rsc par 6 inches (Color- Taxtura Structures) and Depth

Brown s i l t and c lay t~ace I- 1 - si 1 - 1 - 1 - 2 1 F i n e gravel Roots Moist if^ HNU ND 24 hour headspace ND

2 _ 1 bull3 shy

4

bull=-pound-=-=shy Brown s i l t and c lay bull 6 - 52 5-7-10-1 1 0 1 - Shale Fragments Mois t mdash HNU ND 24 hour headspace ND bull 7 - shy

= = = r ~- ~mdash~mdash~-- bull

bull 8 J r^r shy

P-TEC raquo- 9 shy1 IH

- 1 0 shy d-r-e-=- Gray c lay and s i l t t^ace coarse-med 1 um- F l ne sard

1- 1 1 -8np S3 7-5-6-5 0 8- Shale Fragments Moist HNU ND 24 hour neadspace ND

- 1 2 - iigEfdlaquor

-T-=--^r-- bulli-S-i-e-Er- imdash mdash mdash

- 4- - Wet zone ^m nr - 1 5 shy Tan brown c l a y ana s i t trace

coarse-med i un- F gte sa^d trace - 1 5 - 54 5 4 - 4 - 4 1 4 -1 coarse-med i u m - F i ne g r ave l S n a e

Fragments Mois t hNU ND 24 ^c^~ bull 7^ 1bull - headspace lt 1

-i~I^--r_mdash Orange brown c l a y c^c Si I t 1 1 tt 1 e coarse-med 1 UTI- bull- negt sana

- 1 9 - S5 ^ 8 8-23 1 trace- med um g^ave Sale quartz Fragments jVet SSfi Lowest 4 tie sard i ssc

- 18

-22

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

Dr i 1 1 ing Log Page of 1

W e l l Number ERM-5S ERM - New England inc

Project

C l l e n t

Or 1111ng

Tans 1 tor Electronics pTnJBfr Nn 1 12-01

Tans i tor Electronics

Catoh Co

Log by

Drl11er

D Vesper

M i k e GroE5by

Date Started 12788 Date Finished 12788

Screen - Diameter Cas1ng shy D1ameter Boring Depth 1 R Surface Elev Measuring Point top inner stainless p ipe

t 9 Bennlngton Vt Location

Length Length 7 9 Well Depth

Drilling Method HSA 425 ID

10 Slot Size 020 Type sta 1 n stFgtpgt

16 BorlnQ D i g 8 820 - 1 5 Measuring Point F lavn tunn 82238

Notes

6 14 ID

Sampl ajraphlc Dascr1 pt 1 onSo 1 1 Classification Blow counts Depth Log Wall Number Rec per B inchee (Color Taxtura Structuras) and Depth

- 1

-2

shy

shy

-

-

No samples taken see log of adjacent well (ERM-5d) for soil descriptions and graphic log

-3 shy

-4 shy

- 5 shy

-6 shy

- 7 shy

-8 shy

- 9 shy

-10shy

1 1

12

3

14

15

16

17

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

Drl 1 1 ing Log Page 1 of 3

W e l l Number ERM-SD ERM - New Enoland inc Map

Tans 1 tor Electronics p -- Mo - 112-01 Project rojet Tans l tor Electronics ( j D Vesper C l lent OQ b F iro tannto

f pond - court D r i l l i n g Co Catoh Dr i l l =u~ bull M i k e Crosbij

1O C OQ Date Started 2~2-88 Date r in ilt3he r i - lt- D OCgt

Rt 9 Bennington Vt n ~~~f ~Locat 1 on rl 1 1 ing Method HSA rotary Screen - D ametsr 2 1 ongfh bull 5 Slot Siza 020 6 d ID Notes

8 12 CO USA to 20 Cos 1 ng - D ameter 2 Length- 293 Tupe stain steel 3 78 trlcone wi th

Boring Dept h = 57 W e l l Depth - 32 Borina D l a 4 wash rotaru to 57 C t r^vn- t i-r R 37 Surface EU iv bull 820 1 6 Measur 1 ng

4 casing to 35 leasurlng Foint top 1 nr ier stain le jss pipe dur i ng di~ 1 1 1 1 ng

Samp 1 a Descr lotl onSo 1 1 C l a s s i f i c a t i on )apth Loo

Ws 1 1 Number Rec 8 1 oucounts

Dar S inches (Color Toxture Structures) and Deoth

Brown s i l t and c lay trace coarseshy- 1 - 1 -2-2-3 1 Tned 1 um sand trace m e d i u m - F i n e gravel

Roots Moist 24 hour headspace ND ~ ~~ ft T smdash bullmdash _-_ -mdash 2 -

Ii ^

3 shy-^fmdash ~ s

- 4 -J shymdash- mdash rzr - s

N 5 - i _ mdash mdashj _ Tan brown clay and si i c urace -rmdash^mdashf-mdash coarse-medium sand trace m e d l u m shy

i P S Z W R - 1 -2-3 1 3 - f 1 ne gravel Shale Fragments Moist 24 hour headspace ND

J^_4_

Z^^TZ-r s bull |1T~^~_^~ s - 7 - - mdash ~~jy ~~ SS Vj

bull bull bull S A S J bull8 shy

mdash T^^ _ xj_r_rj(imdash - 9 shy

- 1 0 - 1 Tan clay and s i l t t ~ace ccarse-SUM medium sand trace rbullped i um- f i ne

bull 1 1 - $ I I

S3 W R - 1 -1 -3 09 - g r a v e l Shale fragme its Wet water shy1 n rod 24 hour heat ispace D

r bull12shymdash JT^lStS zgt)nz i~ici bull~ mdash ~~ mdash - o -~ ~~ itrade mdash ~N -13- | 1 Wet zone

- 14shy-Z~mdashlaquo ^- mdash S

- 1 5 - s 3rown c 1 ay and s i l t trace coarse 7r-~^T~-jr_-rtv N I^

$ fy 118-38-21-1 3 medium sand l i t t l e bullned i UTI mdash e - 1 6 - -_r33^S -g rave l Limestone f i -agment ^ i g h t r S4 ^ 1 1 3 Dry HNU ND 24 hou ^ headspace D - 17shy

-18 shyM fy

-19- ~

-20shy Brown clay and s i l t trace _imdash 18-22-23-3|l coarse-medium sand 1 1 tt 1 e ~iea 1 ^mshy

bull 2 1 - 35 - f 1 ne g rave 1 Sha 1 e quartz ( 3 5 ffifi 1 6 d iameter ) fragments T igh t Dry i22- HNU ND 24 hour heaa space ND

^^

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

D r l 1 1 l n g Log ERM - New En01and lnc

ProjectTansitor Notes We 1 1 No ERM-SD Project N o ] ] 2 - 0 1 Page 2 of 3 Log by Q Vesper

Graohic Samp 19 DescriptionSoil C 1 039 t f- 1 cat 1 on Blowcounts gteptn Rec

Log Number- (Color- Texture Str-ucturas) par 6 inchoe is nd Depth

24shy

Tan brown clay and silt trace-coarse -medI urn sand some mediumshy

26-26-39-60 fine gravel Shale Fragments Moist HNU ND 24 hour headspace ND

1 2

Orange brown clay and silt trace coarse-medium-flne

4-18-19-22 sand some medium-Pine gravel S7 Shale fragments Moist 0 HNU 80 ppm peak 24 hour

headspace ND

Orange brown silty clay 1-14-17-23 1 seam medium-fine sard

1 4 Moist HNU ND 24 hour headspace ND

Cobb1es

r

1 Orange brown clay and s i l t I24-41-66-80 trace+ coarse-med1 urn-flne

39 rsand trace medium-fire g-avel 1 3 Shale quartz fragments volst ND 24 hour headstace ND

-43--z-z tl

Orange brown clay and s i l t - - l i t t l e ccarse-med l urn- e sand

28-35-38-601 Sha 1 s quartz fragments Jpper si a bull-39 l i t t l e med1 urn-f l ~e gmdashavel

pound i Lower 05 trace medu~--re J i_g ravel Moist HNU ND 2 - xour

bulleadspace ND

-grange silty clay 1 sear- fine jsard Moist HNU ND 24 hour 24-15-29-45 i headspace ND

-50

Dr1111ng Log ERM - New Eng1and 1nc

Project Tons 1 tor Notes W e l l N o E R M - s D pr 0 jectNo 1 1 2 - 0 1

Page 3 oF 3 Log by D Vesper

Graohlc Descr i pt i onSo I 1 Classif icat ion Wel 1 B lowcounte Roc

Loo (Color Texture Structures) Number

and Daoth por 6 Inches

S1 1 (cont gt 1 2 (Cont see previous page) mdash mdashmdash shy

^KK -

54- BJIiijjH BIB EI S^BH --r C- bullI Orange s 1 1 ty clay trace- medium

56- gt3~rr S12 - f i n e gravel Dry HNU ND 24 shy-sc-z-i 1 6 hour headspace NDraquotradeB

bA

-

i

-

-

-

j1

APPENDIX D

PRIORITY POLLUTANT METALS RESULTS

(VTDEC laboratory)

OEPT OF WATER RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

DATE 021089

I B 10 40905 REPORT TO ELAPP DUE DATE 020489

SOURCE LOCATION TANS S4 COLLECTION DATE 010389

FJOGflAM 022-HA2AWJOUS WASTE AMBIENT WATER SAMPLE Y

S IBMITTED BY ELAPP PHONE 244-8702^SUBMIT DATE 010489 LEGAL NO

SAMPLE NOTES M601-TEST 11 TO 10 DILUTION TEST 2 NC DILUTION

TEST bull OE TEST NAME

1601 METHOD 601 TESTS

ltfljp2 METHOD 602 TESTS

) 2 ARSENIC OISS - FURNACE

1LJ2 SELENIUM OISS - FURNACE

gt 2 SILVER DISS - FURNACE

)BE2 BERYLLIUM DISS - FURNACE

5 2 ANTIMONY DISS - FURNACE

T12 THALLIUM DISS - FURNACE

Cu CADMIUM DISSOLVED

C CHROMIUM DISSOLVED

CU COPPER D I S S O L V E D

N N I C K E L D I S S O L V E D

Pdeg LEAD DISSOLVED

Z I N Z I N C D I S S O L V E D

M E R C U R Y D I S S O L V E D

RESULT

0

0

5

5

10

10

5C

20

1

2

46

5

5

50

0 2

UNIT OFMEASURE

NONE

NONE

UGL

UGL

UGL

UGL

UGL

UGL

UGL

UGL

UGL

UGL

UGL

UGL

UGL

REMARKS CODE

T

U

PROCESS DATE

010689

010689

011289

011289

011389

011389

011689

011389

011189

011189

011189

011189

011189

011189

010689

OEPT Of WATE RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

G A T E 021089

I B ID 40904 REPORT TO ELAPP DUE DATE 020489

SOURCE LOCATION TANS S3 OLLECTI ON DATE 010389

PROGRAM 022-HAZARDOUS W A S T E AMBIENT HATER SAMPLE Y

S BMJTTED BY ELAPP PHONE J44-8702 SUBMIT DATE 010489 LEGAL NO

SAMPLE NOTES

TEST UNIT OF REMARKS PROCESS C DE TEST NAME RESULT MEASURE CODE DATE

4601 METHOD 601 TESTS 0 NONE U 010689

4 02 METHOD 602 TESTS 0 NONE Z 010689

2 ARSENIC DISS - FURNACE lt 5 UGL 011289

3oE2 SELENIUM DISS - FURNACE lt 5 UGL 011289

D G2 SILVER DISS - FURNACE lt 10 UGL 011389

DBE2 BERYLLIUM DISS - FURNACE lt 10 UGL 011389

) (J2 ANTIMONY DISS - FURNACE lt 50 UGL 011689

32 THALLIUM DISS - FURNACE lt 20 UGL 011389

XD CADMIUM D I S S O L V E D - lt 1 UGL 011189

3( k CHROMIUM DISSOLVED 4 UGL 011189

)CU COPPER D ISSOLVED 46 UGL 011189

3raquo Q NICKEL DISSOLVED lt 5 UGL 011189

)f~ LEAD DISSOLVED lt 5 UGL 011189

)ZN ZINC DISSOLVED 40 UGL 011189

3 1 - 5 MERCURY D I S S O L V E D lt 02 UGL 010689

DEPT OF WATER RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

DATE 021089

L ^ 10 40902 REPORT TO ELAPP DUE DATE 020489

SnURCE LOCATION TANS S13 COLLECTION DATE 010389

Ppound)GRAM 022-HAZARDOUS WASTE AMBIENT WATER SAMPLE Y

s EMITTED BY ELAPP PHONE 244-3702 SUBMIT DATE 010439 LEGAL NO

SAMPLE NOTES

FFST UNIT OF REMARKS PROCESS TEST NAME RESULT MEASURE CODE DATE

1601 METHOD 601 TESTS 0 NX3NE S 010689

Mgt2 METHOD 602 TESTS 0 NONE Z 010689

3 I ARSENIC DISS - FURNACE 5 UGL 011289

3SE2 SELENIUM DISS - FURNACE 5 UGL 011289

3052 SILVER DISS - FURNACE 10 UGL 011389

3BE2 BERYLLIUM DISS - FURNACE 10 UGL 011389

ANTIMONY DISS - FURNACE 50 UGL 011689

THALLIUM DISS - FURNACE 20 UGL 011389

DCD CADMIUM DISSOLVED 1 UGL 011189

CHROMIUM DISSOLVED 2 UGL 011189

)CU COPPER DISSOLVED 24 UGL 011189

NICKEL DISSOLVED 5 UGL 011189

LEAD DISSOLVED 5 UGL 011189

)ZN ZINC DISSOLVED 18 UGL 011189

^ ^ MERCURY DISSOLVED 02 UGL 010689

DEPT OF WATEK RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

DATE 021089

t gtB ID 40900 REPORT TO ELAPP DUE DATE 020489

SOURCE LCCATION TANS MW-5S COLLECTION DATE 010389

FIOGRAM 022-HAZARDOUS WASTE AMBIENT WATER SAMPLE Y

pound JBMITTEC BY ELAPP PHONE 244-8702 SUBMIT DATE 010489 LEGAL NO

SAMPLE NCTES

TFST UNIT OF REMARKS PROCESS C DE TEST NAME RESULT MEASURE CODE DATE

M601 METHOD 601 TESTS 0 NONE Z 010689

METHOD 602 TESTS 0 NONE Z 010689

S2 ARSENIC DISS - FURNACE 5 UGL 011289

DSE2 SELENIUM DISS - FURNACE 5 UGL 011289

C G2 SILVER DISS - FURNACE 10 UGL 011389

DBE2 BERYLLIUM DISS - FURNACE 10 UGL 011389 i

D iB2 ANTIMONY DISS - FURNACE 50 UGL 011689

DL2 THALLIUM DISS - FURNACE 2-C UGL 011389

O C D CADMIUM D I S S O L V E D 1 UGL 011189

D R CHROMIUM D I S S O L V E D 2 UGL 011189

CCU COPPER DISSOLVED 32 UGL 011189

0 I NICKEL DISSOLVED 5 UGL 011189

D3 LEAD DISSOLVED 5 UGL 011189

O Z N ZINC D I S S O L V E D 20 UGL 011189

Di i MERCURY D ISSOLVED 02 UGL 010689

OEPT OF HATER RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

DATE 021089

1 8 ID 40899 REPORT TO ELAPP DUE pound)ATE 020489

SOURCE LOCATION TANS MH-4S COLLECTION DATE 010389

PROGRAM 022-HA2ARDOUS WASTE AMBIENT HATER SAMPLE Y

s IBMITTED BY ELAPP PHONE

SAMPLE NCTES

T C S T C OE

M601

2

DSE2

0 32

DBE2

0-32

0 2

DCD

Dl

DCU

Of

Of

DZN

TEST NAME

METHOD 601 TESTS

METHOD 602 TESTS

ARSENIC 01SS - FURNACE

SELENIUM 01SS - FURNACE

SILVER DISS - FURNACE

BERYLLIUM DISS - FURNACE

ANTIMONY DISS - FURNACE

THALLIUM OISS - FURNACE

CADMIUM DISSOLVED

CHROMIUM DISSOLVED

COPPER DISSOLVED

NICKEL DISSOLVED

LEAD DISSOLVED

ZINC DISSOLVED

MERCURY DISSOLVED

244-8702 SUBMIT DATE 010439 LEGAL NO

UNIT OF REMARKS PROCESS RESULT MEASURE CODE DATE

0 NONE S 010689

0 NONE Z 010689

5 UGL 011289

5 UGL 011289

10 UGL 011389

10 UGL 011389 --a

50 UGL 011689

20 UGL 011389

2 UGL 011189

2 UGL 011189

32 UGL 011189

12 UGL 011189

5 UGL 011189

17 UGL 011189

02 UGL 010689

DEPT OF WATER RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

DATE 021089

I IB ID 40898 REPORT TO ELAPP DUE DATE 020489

SOURCE LOCATION TANS MW-3S COLLECTION DATE 010389

fioGRAM 022-HAZARDOUS WASTE AMBIENT WATER SAMPLE Y

i JBMITTED BY ELAPP PHONE 244-8702 SUBMIT DATE 010489 LEGAL NO

SAMPLE NOTES

TFST UNIT OF REMARKS PROCESS C DE TEST NAME RESULT MEASURE CODE DATE

M601 METHOD 601 TESTS 0 NONE T 010689

MSBC2 METHOD 602 TESTS 0 NONE Z 010689

2 ARSENIC DISS - FURNACE 5 UGL 011289

DSE2 SELENIUM DISS - FURNACE 5 UGL 011289

D G2 SILVER DISS - FURNACE 10 UGL 011389

D8E2 BERYLLIUM DISS - FURNACE 10 UGL 011389

D 32 ANTIMONY DISS - FURNACE 50 UGL 011689

r2 THALLIUM OISS - FURNACE 20 UGL 011389

DCO CADMIUM DISSOLVED I UGL 011189

31 CHROMIUM D I S S O L V E D 4 UGL Oi1189

3CU COPPER DISSOLVED 40 UGL 011189

)f NICKEL DISSOLVED 5 UGL 011189

)P~ LEAD DISSOLVED 5 UGL 011189

)ZN ZINC DISSOLVED 22 UGL 011189

)h MERCURY D ISSOLVED 02 UGL 010689

OEPT OF W A T E R RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LA8 REPORT

GATE 021089

I B ID 40897 REPORT TO ELAPP DUE DATE 020489

ClpURCE LOCATION TANS MW-2S COLLECTION DATE 010389

J-ROGRAM 022-KAZARDOUS WASTE AMBIENT WATER SAMPLE Y

JJBMITTED BY ELAPP PHONE 244-87C2 SUBMIT DATE 010489 LEGAL NO

SAMPLE NCTES

UNIT OF REMARKS PROCESS ( IDE TEST NAME RESULT MEASURE CODE DATE

M601 METHOD 601 TESTS 0 NONE T 010689

fSlo2 METHOD 602 TESTS 0 NONE U 010689

S2 ARSENIC DISS - FURNACE 5 UGL 011289

DSE2 SELENIUM OISS - FURNACE 5 UGL 011289

[ gtG2 SILVER DISS - FURNACE 10 UGL 011389

DBE2 BERYLLIUM DISS - FURNACE 10 UGL 011389

L B2 ANTIMONY DISS - FURNACE 50 UGL 011689

C^L2 THALLIUM DISS - FURNACE 2-C UGL 01138S

DCD CADMIUM DISSOLVED 1 UGL 011189

[ R CHROMIUM DISSOLVED 2 UGL 01118S

DCU COPPER DISSOLVED 25 UGL 01llM

C I NICKEL DISSOLVED 5 UGL 01U8S

C B LEAD DISSOLVED 5 UGL 01118C

DZN ZINC DISSOLVED 28 UGL 01118

D JG MERCURY 01 SSOLVED 0-3 UGL 01068-5

j1

APPENDIX D

PRIORITY POLLUTANT METALS RESULTS

(VTDEC laboratory)

OEPT OF WATER RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

DATE 021089

I B 10 40905 REPORT TO ELAPP DUE DATE 020489

SOURCE LOCATION TANS S4 COLLECTION DATE 010389

FJOGflAM 022-HA2AWJOUS WASTE AMBIENT WATER SAMPLE Y

S IBMITTED BY ELAPP PHONE 244-8702^SUBMIT DATE 010489 LEGAL NO

SAMPLE NOTES M601-TEST 11 TO 10 DILUTION TEST 2 NC DILUTION

TEST bull OE TEST NAME

1601 METHOD 601 TESTS

ltfljp2 METHOD 602 TESTS

) 2 ARSENIC OISS - FURNACE

1LJ2 SELENIUM OISS - FURNACE

gt 2 SILVER DISS - FURNACE

)BE2 BERYLLIUM DISS - FURNACE

5 2 ANTIMONY DISS - FURNACE

T12 THALLIUM DISS - FURNACE

Cu CADMIUM DISSOLVED

C CHROMIUM DISSOLVED

CU COPPER D I S S O L V E D

N N I C K E L D I S S O L V E D

Pdeg LEAD DISSOLVED

Z I N Z I N C D I S S O L V E D

M E R C U R Y D I S S O L V E D

RESULT

0

0

5

5

10

10

5C

20

1

2

46

5

5

50

0 2

UNIT OFMEASURE

NONE

NONE

UGL

UGL

UGL

UGL

UGL

UGL

UGL

UGL

UGL

UGL

UGL

UGL

UGL

REMARKS CODE

T

U

PROCESS DATE

010689

010689

011289

011289

011389

011389

011689

011389

011189

011189

011189

011189

011189

011189

010689

OEPT Of WATE RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

G A T E 021089

I B ID 40904 REPORT TO ELAPP DUE DATE 020489

SOURCE LOCATION TANS S3 OLLECTI ON DATE 010389

PROGRAM 022-HAZARDOUS W A S T E AMBIENT HATER SAMPLE Y

S BMJTTED BY ELAPP PHONE J44-8702 SUBMIT DATE 010489 LEGAL NO

SAMPLE NOTES

TEST UNIT OF REMARKS PROCESS C DE TEST NAME RESULT MEASURE CODE DATE

4601 METHOD 601 TESTS 0 NONE U 010689

4 02 METHOD 602 TESTS 0 NONE Z 010689

2 ARSENIC DISS - FURNACE lt 5 UGL 011289

3oE2 SELENIUM DISS - FURNACE lt 5 UGL 011289

D G2 SILVER DISS - FURNACE lt 10 UGL 011389

DBE2 BERYLLIUM DISS - FURNACE lt 10 UGL 011389

) (J2 ANTIMONY DISS - FURNACE lt 50 UGL 011689

32 THALLIUM DISS - FURNACE lt 20 UGL 011389

XD CADMIUM D I S S O L V E D - lt 1 UGL 011189

3( k CHROMIUM DISSOLVED 4 UGL 011189

)CU COPPER D ISSOLVED 46 UGL 011189

3raquo Q NICKEL DISSOLVED lt 5 UGL 011189

)f~ LEAD DISSOLVED lt 5 UGL 011189

)ZN ZINC DISSOLVED 40 UGL 011189

3 1 - 5 MERCURY D I S S O L V E D lt 02 UGL 010689

DEPT OF WATER RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

DATE 021089

L ^ 10 40902 REPORT TO ELAPP DUE DATE 020489

SnURCE LOCATION TANS S13 COLLECTION DATE 010389

Ppound)GRAM 022-HAZARDOUS WASTE AMBIENT WATER SAMPLE Y

s EMITTED BY ELAPP PHONE 244-3702 SUBMIT DATE 010439 LEGAL NO

SAMPLE NOTES

FFST UNIT OF REMARKS PROCESS TEST NAME RESULT MEASURE CODE DATE

1601 METHOD 601 TESTS 0 NX3NE S 010689

Mgt2 METHOD 602 TESTS 0 NONE Z 010689

3 I ARSENIC DISS - FURNACE 5 UGL 011289

3SE2 SELENIUM DISS - FURNACE 5 UGL 011289

3052 SILVER DISS - FURNACE 10 UGL 011389

3BE2 BERYLLIUM DISS - FURNACE 10 UGL 011389

ANTIMONY DISS - FURNACE 50 UGL 011689

THALLIUM DISS - FURNACE 20 UGL 011389

DCD CADMIUM DISSOLVED 1 UGL 011189

CHROMIUM DISSOLVED 2 UGL 011189

)CU COPPER DISSOLVED 24 UGL 011189

NICKEL DISSOLVED 5 UGL 011189

LEAD DISSOLVED 5 UGL 011189

)ZN ZINC DISSOLVED 18 UGL 011189

^ ^ MERCURY DISSOLVED 02 UGL 010689

DEPT OF WATEK RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

DATE 021089

t gtB ID 40900 REPORT TO ELAPP DUE DATE 020489

SOURCE LCCATION TANS MW-5S COLLECTION DATE 010389

FIOGRAM 022-HAZARDOUS WASTE AMBIENT WATER SAMPLE Y

pound JBMITTEC BY ELAPP PHONE 244-8702 SUBMIT DATE 010489 LEGAL NO

SAMPLE NCTES

TFST UNIT OF REMARKS PROCESS C DE TEST NAME RESULT MEASURE CODE DATE

M601 METHOD 601 TESTS 0 NONE Z 010689

METHOD 602 TESTS 0 NONE Z 010689

S2 ARSENIC DISS - FURNACE 5 UGL 011289

DSE2 SELENIUM DISS - FURNACE 5 UGL 011289

C G2 SILVER DISS - FURNACE 10 UGL 011389

DBE2 BERYLLIUM DISS - FURNACE 10 UGL 011389 i

D iB2 ANTIMONY DISS - FURNACE 50 UGL 011689

DL2 THALLIUM DISS - FURNACE 2-C UGL 011389

O C D CADMIUM D I S S O L V E D 1 UGL 011189

D R CHROMIUM D I S S O L V E D 2 UGL 011189

CCU COPPER DISSOLVED 32 UGL 011189

0 I NICKEL DISSOLVED 5 UGL 011189

D3 LEAD DISSOLVED 5 UGL 011189

O Z N ZINC D I S S O L V E D 20 UGL 011189

Di i MERCURY D ISSOLVED 02 UGL 010689

OEPT OF HATER RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

DATE 021089

1 8 ID 40899 REPORT TO ELAPP DUE pound)ATE 020489

SOURCE LOCATION TANS MH-4S COLLECTION DATE 010389

PROGRAM 022-HA2ARDOUS WASTE AMBIENT HATER SAMPLE Y

s IBMITTED BY ELAPP PHONE

SAMPLE NCTES

T C S T C OE

M601

2

DSE2

0 32

DBE2

0-32

0 2

DCD

Dl

DCU

Of

Of

DZN

TEST NAME

METHOD 601 TESTS

METHOD 602 TESTS

ARSENIC 01SS - FURNACE

SELENIUM 01SS - FURNACE

SILVER DISS - FURNACE

BERYLLIUM DISS - FURNACE

ANTIMONY DISS - FURNACE

THALLIUM OISS - FURNACE

CADMIUM DISSOLVED

CHROMIUM DISSOLVED

COPPER DISSOLVED

NICKEL DISSOLVED

LEAD DISSOLVED

ZINC DISSOLVED

MERCURY DISSOLVED

244-8702 SUBMIT DATE 010439 LEGAL NO

UNIT OF REMARKS PROCESS RESULT MEASURE CODE DATE

0 NONE S 010689

0 NONE Z 010689

5 UGL 011289

5 UGL 011289

10 UGL 011389

10 UGL 011389 --a

50 UGL 011689

20 UGL 011389

2 UGL 011189

2 UGL 011189

32 UGL 011189

12 UGL 011189

5 UGL 011189

17 UGL 011189

02 UGL 010689

DEPT OF WATER RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

DATE 021089

I IB ID 40898 REPORT TO ELAPP DUE DATE 020489

SOURCE LOCATION TANS MW-3S COLLECTION DATE 010389

fioGRAM 022-HAZARDOUS WASTE AMBIENT WATER SAMPLE Y

i JBMITTED BY ELAPP PHONE 244-8702 SUBMIT DATE 010489 LEGAL NO

SAMPLE NOTES

TFST UNIT OF REMARKS PROCESS C DE TEST NAME RESULT MEASURE CODE DATE

M601 METHOD 601 TESTS 0 NONE T 010689

MSBC2 METHOD 602 TESTS 0 NONE Z 010689

2 ARSENIC DISS - FURNACE 5 UGL 011289

DSE2 SELENIUM DISS - FURNACE 5 UGL 011289

D G2 SILVER DISS - FURNACE 10 UGL 011389

D8E2 BERYLLIUM DISS - FURNACE 10 UGL 011389

D 32 ANTIMONY DISS - FURNACE 50 UGL 011689

r2 THALLIUM OISS - FURNACE 20 UGL 011389

DCO CADMIUM DISSOLVED I UGL 011189

31 CHROMIUM D I S S O L V E D 4 UGL Oi1189

3CU COPPER DISSOLVED 40 UGL 011189

)f NICKEL DISSOLVED 5 UGL 011189

)P~ LEAD DISSOLVED 5 UGL 011189

)ZN ZINC DISSOLVED 22 UGL 011189

)h MERCURY D ISSOLVED 02 UGL 010689

OEPT OF W A T E R RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LA8 REPORT

GATE 021089

I B ID 40897 REPORT TO ELAPP DUE DATE 020489

ClpURCE LOCATION TANS MW-2S COLLECTION DATE 010389

J-ROGRAM 022-KAZARDOUS WASTE AMBIENT WATER SAMPLE Y

JJBMITTED BY ELAPP PHONE 244-87C2 SUBMIT DATE 010489 LEGAL NO

SAMPLE NCTES

UNIT OF REMARKS PROCESS ( IDE TEST NAME RESULT MEASURE CODE DATE

M601 METHOD 601 TESTS 0 NONE T 010689

fSlo2 METHOD 602 TESTS 0 NONE U 010689

S2 ARSENIC DISS - FURNACE 5 UGL 011289

DSE2 SELENIUM OISS - FURNACE 5 UGL 011289

[ gtG2 SILVER DISS - FURNACE 10 UGL 011389

DBE2 BERYLLIUM DISS - FURNACE 10 UGL 011389

L B2 ANTIMONY DISS - FURNACE 50 UGL 011689

C^L2 THALLIUM DISS - FURNACE 2-C UGL 01138S

DCD CADMIUM DISSOLVED 1 UGL 011189

[ R CHROMIUM DISSOLVED 2 UGL 01118S

DCU COPPER DISSOLVED 25 UGL 01llM

C I NICKEL DISSOLVED 5 UGL 01U8S

C B LEAD DISSOLVED 5 UGL 01118C

DZN ZINC DISSOLVED 28 UGL 01118

D JG MERCURY 01 SSOLVED 0-3 UGL 01068-5

OEPT OF WATER RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

DATE 021089

I B 10 40905 REPORT TO ELAPP DUE DATE 020489

SOURCE LOCATION TANS S4 COLLECTION DATE 010389

FJOGflAM 022-HA2AWJOUS WASTE AMBIENT WATER SAMPLE Y

S IBMITTED BY ELAPP PHONE 244-8702^SUBMIT DATE 010489 LEGAL NO

SAMPLE NOTES M601-TEST 11 TO 10 DILUTION TEST 2 NC DILUTION

TEST bull OE TEST NAME

1601 METHOD 601 TESTS

ltfljp2 METHOD 602 TESTS

) 2 ARSENIC OISS - FURNACE

1LJ2 SELENIUM OISS - FURNACE

gt 2 SILVER DISS - FURNACE

)BE2 BERYLLIUM DISS - FURNACE

5 2 ANTIMONY DISS - FURNACE

T12 THALLIUM DISS - FURNACE

Cu CADMIUM DISSOLVED

C CHROMIUM DISSOLVED

CU COPPER D I S S O L V E D

N N I C K E L D I S S O L V E D

Pdeg LEAD DISSOLVED

Z I N Z I N C D I S S O L V E D

M E R C U R Y D I S S O L V E D

RESULT

0

0

5

5

10

10

5C

20

1

2

46

5

5

50

0 2

UNIT OFMEASURE

NONE

NONE

UGL

UGL

UGL

UGL

UGL

UGL

UGL

UGL

UGL

UGL

UGL

UGL

UGL

REMARKS CODE

T

U

PROCESS DATE

010689

010689

011289

011289

011389

011389

011689

011389

011189

011189

011189

011189

011189

011189

010689

OEPT Of WATE RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

G A T E 021089

I B ID 40904 REPORT TO ELAPP DUE DATE 020489

SOURCE LOCATION TANS S3 OLLECTI ON DATE 010389

PROGRAM 022-HAZARDOUS W A S T E AMBIENT HATER SAMPLE Y

S BMJTTED BY ELAPP PHONE J44-8702 SUBMIT DATE 010489 LEGAL NO

SAMPLE NOTES

TEST UNIT OF REMARKS PROCESS C DE TEST NAME RESULT MEASURE CODE DATE

4601 METHOD 601 TESTS 0 NONE U 010689

4 02 METHOD 602 TESTS 0 NONE Z 010689

2 ARSENIC DISS - FURNACE lt 5 UGL 011289

3oE2 SELENIUM DISS - FURNACE lt 5 UGL 011289

D G2 SILVER DISS - FURNACE lt 10 UGL 011389

DBE2 BERYLLIUM DISS - FURNACE lt 10 UGL 011389

) (J2 ANTIMONY DISS - FURNACE lt 50 UGL 011689

32 THALLIUM DISS - FURNACE lt 20 UGL 011389

XD CADMIUM D I S S O L V E D - lt 1 UGL 011189

3( k CHROMIUM DISSOLVED 4 UGL 011189

)CU COPPER D ISSOLVED 46 UGL 011189

3raquo Q NICKEL DISSOLVED lt 5 UGL 011189

)f~ LEAD DISSOLVED lt 5 UGL 011189

)ZN ZINC DISSOLVED 40 UGL 011189

3 1 - 5 MERCURY D I S S O L V E D lt 02 UGL 010689

DEPT OF WATER RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

DATE 021089

L ^ 10 40902 REPORT TO ELAPP DUE DATE 020489

SnURCE LOCATION TANS S13 COLLECTION DATE 010389

Ppound)GRAM 022-HAZARDOUS WASTE AMBIENT WATER SAMPLE Y

s EMITTED BY ELAPP PHONE 244-3702 SUBMIT DATE 010439 LEGAL NO

SAMPLE NOTES

FFST UNIT OF REMARKS PROCESS TEST NAME RESULT MEASURE CODE DATE

1601 METHOD 601 TESTS 0 NX3NE S 010689

Mgt2 METHOD 602 TESTS 0 NONE Z 010689

3 I ARSENIC DISS - FURNACE 5 UGL 011289

3SE2 SELENIUM DISS - FURNACE 5 UGL 011289

3052 SILVER DISS - FURNACE 10 UGL 011389

3BE2 BERYLLIUM DISS - FURNACE 10 UGL 011389

ANTIMONY DISS - FURNACE 50 UGL 011689

THALLIUM DISS - FURNACE 20 UGL 011389

DCD CADMIUM DISSOLVED 1 UGL 011189

CHROMIUM DISSOLVED 2 UGL 011189

)CU COPPER DISSOLVED 24 UGL 011189

NICKEL DISSOLVED 5 UGL 011189

LEAD DISSOLVED 5 UGL 011189

)ZN ZINC DISSOLVED 18 UGL 011189

^ ^ MERCURY DISSOLVED 02 UGL 010689

DEPT OF WATEK RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

DATE 021089

t gtB ID 40900 REPORT TO ELAPP DUE DATE 020489

SOURCE LCCATION TANS MW-5S COLLECTION DATE 010389

FIOGRAM 022-HAZARDOUS WASTE AMBIENT WATER SAMPLE Y

pound JBMITTEC BY ELAPP PHONE 244-8702 SUBMIT DATE 010489 LEGAL NO

SAMPLE NCTES

TFST UNIT OF REMARKS PROCESS C DE TEST NAME RESULT MEASURE CODE DATE

M601 METHOD 601 TESTS 0 NONE Z 010689

METHOD 602 TESTS 0 NONE Z 010689

S2 ARSENIC DISS - FURNACE 5 UGL 011289

DSE2 SELENIUM DISS - FURNACE 5 UGL 011289

C G2 SILVER DISS - FURNACE 10 UGL 011389

DBE2 BERYLLIUM DISS - FURNACE 10 UGL 011389 i

D iB2 ANTIMONY DISS - FURNACE 50 UGL 011689

DL2 THALLIUM DISS - FURNACE 2-C UGL 011389

O C D CADMIUM D I S S O L V E D 1 UGL 011189

D R CHROMIUM D I S S O L V E D 2 UGL 011189

CCU COPPER DISSOLVED 32 UGL 011189

0 I NICKEL DISSOLVED 5 UGL 011189

D3 LEAD DISSOLVED 5 UGL 011189

O Z N ZINC D I S S O L V E D 20 UGL 011189

Di i MERCURY D ISSOLVED 02 UGL 010689

OEPT OF HATER RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

DATE 021089

1 8 ID 40899 REPORT TO ELAPP DUE pound)ATE 020489

SOURCE LOCATION TANS MH-4S COLLECTION DATE 010389

PROGRAM 022-HA2ARDOUS WASTE AMBIENT HATER SAMPLE Y

s IBMITTED BY ELAPP PHONE

SAMPLE NCTES

T C S T C OE

M601

2

DSE2

0 32

DBE2

0-32

0 2

DCD

Dl

DCU

Of

Of

DZN

TEST NAME

METHOD 601 TESTS

METHOD 602 TESTS

ARSENIC 01SS - FURNACE

SELENIUM 01SS - FURNACE

SILVER DISS - FURNACE

BERYLLIUM DISS - FURNACE

ANTIMONY DISS - FURNACE

THALLIUM OISS - FURNACE

CADMIUM DISSOLVED

CHROMIUM DISSOLVED

COPPER DISSOLVED

NICKEL DISSOLVED

LEAD DISSOLVED

ZINC DISSOLVED

MERCURY DISSOLVED

244-8702 SUBMIT DATE 010439 LEGAL NO

UNIT OF REMARKS PROCESS RESULT MEASURE CODE DATE

0 NONE S 010689

0 NONE Z 010689

5 UGL 011289

5 UGL 011289

10 UGL 011389

10 UGL 011389 --a

50 UGL 011689

20 UGL 011389

2 UGL 011189

2 UGL 011189

32 UGL 011189

12 UGL 011189

5 UGL 011189

17 UGL 011189

02 UGL 010689

DEPT OF WATER RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

DATE 021089

I IB ID 40898 REPORT TO ELAPP DUE DATE 020489

SOURCE LOCATION TANS MW-3S COLLECTION DATE 010389

fioGRAM 022-HAZARDOUS WASTE AMBIENT WATER SAMPLE Y

i JBMITTED BY ELAPP PHONE 244-8702 SUBMIT DATE 010489 LEGAL NO

SAMPLE NOTES

TFST UNIT OF REMARKS PROCESS C DE TEST NAME RESULT MEASURE CODE DATE

M601 METHOD 601 TESTS 0 NONE T 010689

MSBC2 METHOD 602 TESTS 0 NONE Z 010689

2 ARSENIC DISS - FURNACE 5 UGL 011289

DSE2 SELENIUM DISS - FURNACE 5 UGL 011289

D G2 SILVER DISS - FURNACE 10 UGL 011389

D8E2 BERYLLIUM DISS - FURNACE 10 UGL 011389

D 32 ANTIMONY DISS - FURNACE 50 UGL 011689

r2 THALLIUM OISS - FURNACE 20 UGL 011389

DCO CADMIUM DISSOLVED I UGL 011189

31 CHROMIUM D I S S O L V E D 4 UGL Oi1189

3CU COPPER DISSOLVED 40 UGL 011189

)f NICKEL DISSOLVED 5 UGL 011189

)P~ LEAD DISSOLVED 5 UGL 011189

)ZN ZINC DISSOLVED 22 UGL 011189

)h MERCURY D ISSOLVED 02 UGL 010689

OEPT OF W A T E R RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LA8 REPORT

GATE 021089

I B ID 40897 REPORT TO ELAPP DUE DATE 020489

ClpURCE LOCATION TANS MW-2S COLLECTION DATE 010389

J-ROGRAM 022-KAZARDOUS WASTE AMBIENT WATER SAMPLE Y

JJBMITTED BY ELAPP PHONE 244-87C2 SUBMIT DATE 010489 LEGAL NO

SAMPLE NCTES

UNIT OF REMARKS PROCESS ( IDE TEST NAME RESULT MEASURE CODE DATE

M601 METHOD 601 TESTS 0 NONE T 010689

fSlo2 METHOD 602 TESTS 0 NONE U 010689

S2 ARSENIC DISS - FURNACE 5 UGL 011289

DSE2 SELENIUM OISS - FURNACE 5 UGL 011289

[ gtG2 SILVER DISS - FURNACE 10 UGL 011389

DBE2 BERYLLIUM DISS - FURNACE 10 UGL 011389

L B2 ANTIMONY DISS - FURNACE 50 UGL 011689

C^L2 THALLIUM DISS - FURNACE 2-C UGL 01138S

DCD CADMIUM DISSOLVED 1 UGL 011189

[ R CHROMIUM DISSOLVED 2 UGL 01118S

DCU COPPER DISSOLVED 25 UGL 01llM

C I NICKEL DISSOLVED 5 UGL 01U8S

C B LEAD DISSOLVED 5 UGL 01118C

DZN ZINC DISSOLVED 28 UGL 01118

D JG MERCURY 01 SSOLVED 0-3 UGL 01068-5

OEPT Of WATE RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

G A T E 021089

I B ID 40904 REPORT TO ELAPP DUE DATE 020489

SOURCE LOCATION TANS S3 OLLECTI ON DATE 010389

PROGRAM 022-HAZARDOUS W A S T E AMBIENT HATER SAMPLE Y

S BMJTTED BY ELAPP PHONE J44-8702 SUBMIT DATE 010489 LEGAL NO

SAMPLE NOTES

TEST UNIT OF REMARKS PROCESS C DE TEST NAME RESULT MEASURE CODE DATE

4601 METHOD 601 TESTS 0 NONE U 010689

4 02 METHOD 602 TESTS 0 NONE Z 010689

2 ARSENIC DISS - FURNACE lt 5 UGL 011289

3oE2 SELENIUM DISS - FURNACE lt 5 UGL 011289

D G2 SILVER DISS - FURNACE lt 10 UGL 011389

DBE2 BERYLLIUM DISS - FURNACE lt 10 UGL 011389

) (J2 ANTIMONY DISS - FURNACE lt 50 UGL 011689

32 THALLIUM DISS - FURNACE lt 20 UGL 011389

XD CADMIUM D I S S O L V E D - lt 1 UGL 011189

3( k CHROMIUM DISSOLVED 4 UGL 011189

)CU COPPER D ISSOLVED 46 UGL 011189

3raquo Q NICKEL DISSOLVED lt 5 UGL 011189

)f~ LEAD DISSOLVED lt 5 UGL 011189

)ZN ZINC DISSOLVED 40 UGL 011189

3 1 - 5 MERCURY D I S S O L V E D lt 02 UGL 010689

DEPT OF WATER RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

DATE 021089

L ^ 10 40902 REPORT TO ELAPP DUE DATE 020489

SnURCE LOCATION TANS S13 COLLECTION DATE 010389

Ppound)GRAM 022-HAZARDOUS WASTE AMBIENT WATER SAMPLE Y

s EMITTED BY ELAPP PHONE 244-3702 SUBMIT DATE 010439 LEGAL NO

SAMPLE NOTES

FFST UNIT OF REMARKS PROCESS TEST NAME RESULT MEASURE CODE DATE

1601 METHOD 601 TESTS 0 NX3NE S 010689

Mgt2 METHOD 602 TESTS 0 NONE Z 010689

3 I ARSENIC DISS - FURNACE 5 UGL 011289

3SE2 SELENIUM DISS - FURNACE 5 UGL 011289

3052 SILVER DISS - FURNACE 10 UGL 011389

3BE2 BERYLLIUM DISS - FURNACE 10 UGL 011389

ANTIMONY DISS - FURNACE 50 UGL 011689

THALLIUM DISS - FURNACE 20 UGL 011389

DCD CADMIUM DISSOLVED 1 UGL 011189

CHROMIUM DISSOLVED 2 UGL 011189

)CU COPPER DISSOLVED 24 UGL 011189

NICKEL DISSOLVED 5 UGL 011189

LEAD DISSOLVED 5 UGL 011189

)ZN ZINC DISSOLVED 18 UGL 011189

^ ^ MERCURY DISSOLVED 02 UGL 010689

DEPT OF WATEK RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

DATE 021089

t gtB ID 40900 REPORT TO ELAPP DUE DATE 020489

SOURCE LCCATION TANS MW-5S COLLECTION DATE 010389

FIOGRAM 022-HAZARDOUS WASTE AMBIENT WATER SAMPLE Y

pound JBMITTEC BY ELAPP PHONE 244-8702 SUBMIT DATE 010489 LEGAL NO

SAMPLE NCTES

TFST UNIT OF REMARKS PROCESS C DE TEST NAME RESULT MEASURE CODE DATE

M601 METHOD 601 TESTS 0 NONE Z 010689

METHOD 602 TESTS 0 NONE Z 010689

S2 ARSENIC DISS - FURNACE 5 UGL 011289

DSE2 SELENIUM DISS - FURNACE 5 UGL 011289

C G2 SILVER DISS - FURNACE 10 UGL 011389

DBE2 BERYLLIUM DISS - FURNACE 10 UGL 011389 i

D iB2 ANTIMONY DISS - FURNACE 50 UGL 011689

DL2 THALLIUM DISS - FURNACE 2-C UGL 011389

O C D CADMIUM D I S S O L V E D 1 UGL 011189

D R CHROMIUM D I S S O L V E D 2 UGL 011189

CCU COPPER DISSOLVED 32 UGL 011189

0 I NICKEL DISSOLVED 5 UGL 011189

D3 LEAD DISSOLVED 5 UGL 011189

O Z N ZINC D I S S O L V E D 20 UGL 011189

Di i MERCURY D ISSOLVED 02 UGL 010689

OEPT OF HATER RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

DATE 021089

1 8 ID 40899 REPORT TO ELAPP DUE pound)ATE 020489

SOURCE LOCATION TANS MH-4S COLLECTION DATE 010389

PROGRAM 022-HA2ARDOUS WASTE AMBIENT HATER SAMPLE Y

s IBMITTED BY ELAPP PHONE

SAMPLE NCTES

T C S T C OE

M601

2

DSE2

0 32

DBE2

0-32

0 2

DCD

Dl

DCU

Of

Of

DZN

TEST NAME

METHOD 601 TESTS

METHOD 602 TESTS

ARSENIC 01SS - FURNACE

SELENIUM 01SS - FURNACE

SILVER DISS - FURNACE

BERYLLIUM DISS - FURNACE

ANTIMONY DISS - FURNACE

THALLIUM OISS - FURNACE

CADMIUM DISSOLVED

CHROMIUM DISSOLVED

COPPER DISSOLVED

NICKEL DISSOLVED

LEAD DISSOLVED

ZINC DISSOLVED

MERCURY DISSOLVED

244-8702 SUBMIT DATE 010439 LEGAL NO

UNIT OF REMARKS PROCESS RESULT MEASURE CODE DATE

0 NONE S 010689

0 NONE Z 010689

5 UGL 011289

5 UGL 011289

10 UGL 011389

10 UGL 011389 --a

50 UGL 011689

20 UGL 011389

2 UGL 011189

2 UGL 011189

32 UGL 011189

12 UGL 011189

5 UGL 011189

17 UGL 011189

02 UGL 010689

DEPT OF WATER RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

DATE 021089

I IB ID 40898 REPORT TO ELAPP DUE DATE 020489

SOURCE LOCATION TANS MW-3S COLLECTION DATE 010389

fioGRAM 022-HAZARDOUS WASTE AMBIENT WATER SAMPLE Y

i JBMITTED BY ELAPP PHONE 244-8702 SUBMIT DATE 010489 LEGAL NO

SAMPLE NOTES

TFST UNIT OF REMARKS PROCESS C DE TEST NAME RESULT MEASURE CODE DATE

M601 METHOD 601 TESTS 0 NONE T 010689

MSBC2 METHOD 602 TESTS 0 NONE Z 010689

2 ARSENIC DISS - FURNACE 5 UGL 011289

DSE2 SELENIUM DISS - FURNACE 5 UGL 011289

D G2 SILVER DISS - FURNACE 10 UGL 011389

D8E2 BERYLLIUM DISS - FURNACE 10 UGL 011389

D 32 ANTIMONY DISS - FURNACE 50 UGL 011689

r2 THALLIUM OISS - FURNACE 20 UGL 011389

DCO CADMIUM DISSOLVED I UGL 011189

31 CHROMIUM D I S S O L V E D 4 UGL Oi1189

3CU COPPER DISSOLVED 40 UGL 011189

)f NICKEL DISSOLVED 5 UGL 011189

)P~ LEAD DISSOLVED 5 UGL 011189

)ZN ZINC DISSOLVED 22 UGL 011189

)h MERCURY D ISSOLVED 02 UGL 010689

OEPT OF W A T E R RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LA8 REPORT

GATE 021089

I B ID 40897 REPORT TO ELAPP DUE DATE 020489

ClpURCE LOCATION TANS MW-2S COLLECTION DATE 010389

J-ROGRAM 022-KAZARDOUS WASTE AMBIENT WATER SAMPLE Y

JJBMITTED BY ELAPP PHONE 244-87C2 SUBMIT DATE 010489 LEGAL NO

SAMPLE NCTES

UNIT OF REMARKS PROCESS ( IDE TEST NAME RESULT MEASURE CODE DATE

M601 METHOD 601 TESTS 0 NONE T 010689

fSlo2 METHOD 602 TESTS 0 NONE U 010689

S2 ARSENIC DISS - FURNACE 5 UGL 011289

DSE2 SELENIUM OISS - FURNACE 5 UGL 011289

[ gtG2 SILVER DISS - FURNACE 10 UGL 011389

DBE2 BERYLLIUM DISS - FURNACE 10 UGL 011389

L B2 ANTIMONY DISS - FURNACE 50 UGL 011689

C^L2 THALLIUM DISS - FURNACE 2-C UGL 01138S

DCD CADMIUM DISSOLVED 1 UGL 011189

[ R CHROMIUM DISSOLVED 2 UGL 01118S

DCU COPPER DISSOLVED 25 UGL 01llM

C I NICKEL DISSOLVED 5 UGL 01U8S

C B LEAD DISSOLVED 5 UGL 01118C

DZN ZINC DISSOLVED 28 UGL 01118

D JG MERCURY 01 SSOLVED 0-3 UGL 01068-5

DEPT OF WATER RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

DATE 021089

L ^ 10 40902 REPORT TO ELAPP DUE DATE 020489

SnURCE LOCATION TANS S13 COLLECTION DATE 010389

Ppound)GRAM 022-HAZARDOUS WASTE AMBIENT WATER SAMPLE Y

s EMITTED BY ELAPP PHONE 244-3702 SUBMIT DATE 010439 LEGAL NO

SAMPLE NOTES

FFST UNIT OF REMARKS PROCESS TEST NAME RESULT MEASURE CODE DATE

1601 METHOD 601 TESTS 0 NX3NE S 010689

Mgt2 METHOD 602 TESTS 0 NONE Z 010689

3 I ARSENIC DISS - FURNACE 5 UGL 011289

3SE2 SELENIUM DISS - FURNACE 5 UGL 011289

3052 SILVER DISS - FURNACE 10 UGL 011389

3BE2 BERYLLIUM DISS - FURNACE 10 UGL 011389

ANTIMONY DISS - FURNACE 50 UGL 011689

THALLIUM DISS - FURNACE 20 UGL 011389

DCD CADMIUM DISSOLVED 1 UGL 011189

CHROMIUM DISSOLVED 2 UGL 011189

)CU COPPER DISSOLVED 24 UGL 011189

NICKEL DISSOLVED 5 UGL 011189

LEAD DISSOLVED 5 UGL 011189

)ZN ZINC DISSOLVED 18 UGL 011189

^ ^ MERCURY DISSOLVED 02 UGL 010689

DEPT OF WATEK RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

DATE 021089

t gtB ID 40900 REPORT TO ELAPP DUE DATE 020489

SOURCE LCCATION TANS MW-5S COLLECTION DATE 010389

FIOGRAM 022-HAZARDOUS WASTE AMBIENT WATER SAMPLE Y

pound JBMITTEC BY ELAPP PHONE 244-8702 SUBMIT DATE 010489 LEGAL NO

SAMPLE NCTES

TFST UNIT OF REMARKS PROCESS C DE TEST NAME RESULT MEASURE CODE DATE

M601 METHOD 601 TESTS 0 NONE Z 010689

METHOD 602 TESTS 0 NONE Z 010689

S2 ARSENIC DISS - FURNACE 5 UGL 011289

DSE2 SELENIUM DISS - FURNACE 5 UGL 011289

C G2 SILVER DISS - FURNACE 10 UGL 011389

DBE2 BERYLLIUM DISS - FURNACE 10 UGL 011389 i

D iB2 ANTIMONY DISS - FURNACE 50 UGL 011689

DL2 THALLIUM DISS - FURNACE 2-C UGL 011389

O C D CADMIUM D I S S O L V E D 1 UGL 011189

D R CHROMIUM D I S S O L V E D 2 UGL 011189

CCU COPPER DISSOLVED 32 UGL 011189

0 I NICKEL DISSOLVED 5 UGL 011189

D3 LEAD DISSOLVED 5 UGL 011189

O Z N ZINC D I S S O L V E D 20 UGL 011189

Di i MERCURY D ISSOLVED 02 UGL 010689

OEPT OF HATER RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

DATE 021089

1 8 ID 40899 REPORT TO ELAPP DUE pound)ATE 020489

SOURCE LOCATION TANS MH-4S COLLECTION DATE 010389

PROGRAM 022-HA2ARDOUS WASTE AMBIENT HATER SAMPLE Y

s IBMITTED BY ELAPP PHONE

SAMPLE NCTES

T C S T C OE

M601

2

DSE2

0 32

DBE2

0-32

0 2

DCD

Dl

DCU

Of

Of

DZN

TEST NAME

METHOD 601 TESTS

METHOD 602 TESTS

ARSENIC 01SS - FURNACE

SELENIUM 01SS - FURNACE

SILVER DISS - FURNACE

BERYLLIUM DISS - FURNACE

ANTIMONY DISS - FURNACE

THALLIUM OISS - FURNACE

CADMIUM DISSOLVED

CHROMIUM DISSOLVED

COPPER DISSOLVED

NICKEL DISSOLVED

LEAD DISSOLVED

ZINC DISSOLVED

MERCURY DISSOLVED

244-8702 SUBMIT DATE 010439 LEGAL NO

UNIT OF REMARKS PROCESS RESULT MEASURE CODE DATE

0 NONE S 010689

0 NONE Z 010689

5 UGL 011289

5 UGL 011289

10 UGL 011389

10 UGL 011389 --a

50 UGL 011689

20 UGL 011389

2 UGL 011189

2 UGL 011189

32 UGL 011189

12 UGL 011189

5 UGL 011189

17 UGL 011189

02 UGL 010689

DEPT OF WATER RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

DATE 021089

I IB ID 40898 REPORT TO ELAPP DUE DATE 020489

SOURCE LOCATION TANS MW-3S COLLECTION DATE 010389

fioGRAM 022-HAZARDOUS WASTE AMBIENT WATER SAMPLE Y

i JBMITTED BY ELAPP PHONE 244-8702 SUBMIT DATE 010489 LEGAL NO

SAMPLE NOTES

TFST UNIT OF REMARKS PROCESS C DE TEST NAME RESULT MEASURE CODE DATE

M601 METHOD 601 TESTS 0 NONE T 010689

MSBC2 METHOD 602 TESTS 0 NONE Z 010689

2 ARSENIC DISS - FURNACE 5 UGL 011289

DSE2 SELENIUM DISS - FURNACE 5 UGL 011289

D G2 SILVER DISS - FURNACE 10 UGL 011389

D8E2 BERYLLIUM DISS - FURNACE 10 UGL 011389

D 32 ANTIMONY DISS - FURNACE 50 UGL 011689

r2 THALLIUM OISS - FURNACE 20 UGL 011389

DCO CADMIUM DISSOLVED I UGL 011189

31 CHROMIUM D I S S O L V E D 4 UGL Oi1189

3CU COPPER DISSOLVED 40 UGL 011189

)f NICKEL DISSOLVED 5 UGL 011189

)P~ LEAD DISSOLVED 5 UGL 011189

)ZN ZINC DISSOLVED 22 UGL 011189

)h MERCURY D ISSOLVED 02 UGL 010689

OEPT OF W A T E R RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LA8 REPORT

GATE 021089

I B ID 40897 REPORT TO ELAPP DUE DATE 020489

ClpURCE LOCATION TANS MW-2S COLLECTION DATE 010389

J-ROGRAM 022-KAZARDOUS WASTE AMBIENT WATER SAMPLE Y

JJBMITTED BY ELAPP PHONE 244-87C2 SUBMIT DATE 010489 LEGAL NO

SAMPLE NCTES

UNIT OF REMARKS PROCESS ( IDE TEST NAME RESULT MEASURE CODE DATE

M601 METHOD 601 TESTS 0 NONE T 010689

fSlo2 METHOD 602 TESTS 0 NONE U 010689

S2 ARSENIC DISS - FURNACE 5 UGL 011289

DSE2 SELENIUM OISS - FURNACE 5 UGL 011289

[ gtG2 SILVER DISS - FURNACE 10 UGL 011389

DBE2 BERYLLIUM DISS - FURNACE 10 UGL 011389

L B2 ANTIMONY DISS - FURNACE 50 UGL 011689

C^L2 THALLIUM DISS - FURNACE 2-C UGL 01138S

DCD CADMIUM DISSOLVED 1 UGL 011189

[ R CHROMIUM DISSOLVED 2 UGL 01118S

DCU COPPER DISSOLVED 25 UGL 01llM

C I NICKEL DISSOLVED 5 UGL 01U8S

C B LEAD DISSOLVED 5 UGL 01118C

DZN ZINC DISSOLVED 28 UGL 01118

D JG MERCURY 01 SSOLVED 0-3 UGL 01068-5

DEPT OF WATEK RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

DATE 021089

t gtB ID 40900 REPORT TO ELAPP DUE DATE 020489

SOURCE LCCATION TANS MW-5S COLLECTION DATE 010389

FIOGRAM 022-HAZARDOUS WASTE AMBIENT WATER SAMPLE Y

pound JBMITTEC BY ELAPP PHONE 244-8702 SUBMIT DATE 010489 LEGAL NO

SAMPLE NCTES

TFST UNIT OF REMARKS PROCESS C DE TEST NAME RESULT MEASURE CODE DATE

M601 METHOD 601 TESTS 0 NONE Z 010689

METHOD 602 TESTS 0 NONE Z 010689

S2 ARSENIC DISS - FURNACE 5 UGL 011289

DSE2 SELENIUM DISS - FURNACE 5 UGL 011289

C G2 SILVER DISS - FURNACE 10 UGL 011389

DBE2 BERYLLIUM DISS - FURNACE 10 UGL 011389 i

D iB2 ANTIMONY DISS - FURNACE 50 UGL 011689

DL2 THALLIUM DISS - FURNACE 2-C UGL 011389

O C D CADMIUM D I S S O L V E D 1 UGL 011189

D R CHROMIUM D I S S O L V E D 2 UGL 011189

CCU COPPER DISSOLVED 32 UGL 011189

0 I NICKEL DISSOLVED 5 UGL 011189

D3 LEAD DISSOLVED 5 UGL 011189

O Z N ZINC D I S S O L V E D 20 UGL 011189

Di i MERCURY D ISSOLVED 02 UGL 010689

OEPT OF HATER RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

DATE 021089

1 8 ID 40899 REPORT TO ELAPP DUE pound)ATE 020489

SOURCE LOCATION TANS MH-4S COLLECTION DATE 010389

PROGRAM 022-HA2ARDOUS WASTE AMBIENT HATER SAMPLE Y

s IBMITTED BY ELAPP PHONE

SAMPLE NCTES

T C S T C OE

M601

2

DSE2

0 32

DBE2

0-32

0 2

DCD

Dl

DCU

Of

Of

DZN

TEST NAME

METHOD 601 TESTS

METHOD 602 TESTS

ARSENIC 01SS - FURNACE

SELENIUM 01SS - FURNACE

SILVER DISS - FURNACE

BERYLLIUM DISS - FURNACE

ANTIMONY DISS - FURNACE

THALLIUM OISS - FURNACE

CADMIUM DISSOLVED

CHROMIUM DISSOLVED

COPPER DISSOLVED

NICKEL DISSOLVED

LEAD DISSOLVED

ZINC DISSOLVED

MERCURY DISSOLVED

244-8702 SUBMIT DATE 010439 LEGAL NO

UNIT OF REMARKS PROCESS RESULT MEASURE CODE DATE

0 NONE S 010689

0 NONE Z 010689

5 UGL 011289

5 UGL 011289

10 UGL 011389

10 UGL 011389 --a

50 UGL 011689

20 UGL 011389

2 UGL 011189

2 UGL 011189

32 UGL 011189

12 UGL 011189

5 UGL 011189

17 UGL 011189

02 UGL 010689

DEPT OF WATER RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

DATE 021089

I IB ID 40898 REPORT TO ELAPP DUE DATE 020489

SOURCE LOCATION TANS MW-3S COLLECTION DATE 010389

fioGRAM 022-HAZARDOUS WASTE AMBIENT WATER SAMPLE Y

i JBMITTED BY ELAPP PHONE 244-8702 SUBMIT DATE 010489 LEGAL NO

SAMPLE NOTES

TFST UNIT OF REMARKS PROCESS C DE TEST NAME RESULT MEASURE CODE DATE

M601 METHOD 601 TESTS 0 NONE T 010689

MSBC2 METHOD 602 TESTS 0 NONE Z 010689

2 ARSENIC DISS - FURNACE 5 UGL 011289

DSE2 SELENIUM DISS - FURNACE 5 UGL 011289

D G2 SILVER DISS - FURNACE 10 UGL 011389

D8E2 BERYLLIUM DISS - FURNACE 10 UGL 011389

D 32 ANTIMONY DISS - FURNACE 50 UGL 011689

r2 THALLIUM OISS - FURNACE 20 UGL 011389

DCO CADMIUM DISSOLVED I UGL 011189

31 CHROMIUM D I S S O L V E D 4 UGL Oi1189

3CU COPPER DISSOLVED 40 UGL 011189

)f NICKEL DISSOLVED 5 UGL 011189

)P~ LEAD DISSOLVED 5 UGL 011189

)ZN ZINC DISSOLVED 22 UGL 011189

)h MERCURY D ISSOLVED 02 UGL 010689

OEPT OF W A T E R RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LA8 REPORT

GATE 021089

I B ID 40897 REPORT TO ELAPP DUE DATE 020489

ClpURCE LOCATION TANS MW-2S COLLECTION DATE 010389

J-ROGRAM 022-KAZARDOUS WASTE AMBIENT WATER SAMPLE Y

JJBMITTED BY ELAPP PHONE 244-87C2 SUBMIT DATE 010489 LEGAL NO

SAMPLE NCTES

UNIT OF REMARKS PROCESS ( IDE TEST NAME RESULT MEASURE CODE DATE

M601 METHOD 601 TESTS 0 NONE T 010689

fSlo2 METHOD 602 TESTS 0 NONE U 010689

S2 ARSENIC DISS - FURNACE 5 UGL 011289

DSE2 SELENIUM OISS - FURNACE 5 UGL 011289

[ gtG2 SILVER DISS - FURNACE 10 UGL 011389

DBE2 BERYLLIUM DISS - FURNACE 10 UGL 011389

L B2 ANTIMONY DISS - FURNACE 50 UGL 011689

C^L2 THALLIUM DISS - FURNACE 2-C UGL 01138S

DCD CADMIUM DISSOLVED 1 UGL 011189

[ R CHROMIUM DISSOLVED 2 UGL 01118S

DCU COPPER DISSOLVED 25 UGL 01llM

C I NICKEL DISSOLVED 5 UGL 01U8S

C B LEAD DISSOLVED 5 UGL 01118C

DZN ZINC DISSOLVED 28 UGL 01118

D JG MERCURY 01 SSOLVED 0-3 UGL 01068-5

OEPT OF HATER RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

DATE 021089

1 8 ID 40899 REPORT TO ELAPP DUE pound)ATE 020489

SOURCE LOCATION TANS MH-4S COLLECTION DATE 010389

PROGRAM 022-HA2ARDOUS WASTE AMBIENT HATER SAMPLE Y

s IBMITTED BY ELAPP PHONE

SAMPLE NCTES

T C S T C OE

M601

2

DSE2

0 32

DBE2

0-32

0 2

DCD

Dl

DCU

Of

Of

DZN

TEST NAME

METHOD 601 TESTS

METHOD 602 TESTS

ARSENIC 01SS - FURNACE

SELENIUM 01SS - FURNACE

SILVER DISS - FURNACE

BERYLLIUM DISS - FURNACE

ANTIMONY DISS - FURNACE

THALLIUM OISS - FURNACE

CADMIUM DISSOLVED

CHROMIUM DISSOLVED

COPPER DISSOLVED

NICKEL DISSOLVED

LEAD DISSOLVED

ZINC DISSOLVED

MERCURY DISSOLVED

244-8702 SUBMIT DATE 010439 LEGAL NO

UNIT OF REMARKS PROCESS RESULT MEASURE CODE DATE

0 NONE S 010689

0 NONE Z 010689

5 UGL 011289

5 UGL 011289

10 UGL 011389

10 UGL 011389 --a

50 UGL 011689

20 UGL 011389

2 UGL 011189

2 UGL 011189

32 UGL 011189

12 UGL 011189

5 UGL 011189

17 UGL 011189

02 UGL 010689

DEPT OF WATER RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

DATE 021089

I IB ID 40898 REPORT TO ELAPP DUE DATE 020489

SOURCE LOCATION TANS MW-3S COLLECTION DATE 010389

fioGRAM 022-HAZARDOUS WASTE AMBIENT WATER SAMPLE Y

i JBMITTED BY ELAPP PHONE 244-8702 SUBMIT DATE 010489 LEGAL NO

SAMPLE NOTES

TFST UNIT OF REMARKS PROCESS C DE TEST NAME RESULT MEASURE CODE DATE

M601 METHOD 601 TESTS 0 NONE T 010689

MSBC2 METHOD 602 TESTS 0 NONE Z 010689

2 ARSENIC DISS - FURNACE 5 UGL 011289

DSE2 SELENIUM DISS - FURNACE 5 UGL 011289

D G2 SILVER DISS - FURNACE 10 UGL 011389

D8E2 BERYLLIUM DISS - FURNACE 10 UGL 011389

D 32 ANTIMONY DISS - FURNACE 50 UGL 011689

r2 THALLIUM OISS - FURNACE 20 UGL 011389

DCO CADMIUM DISSOLVED I UGL 011189

31 CHROMIUM D I S S O L V E D 4 UGL Oi1189

3CU COPPER DISSOLVED 40 UGL 011189

)f NICKEL DISSOLVED 5 UGL 011189

)P~ LEAD DISSOLVED 5 UGL 011189

)ZN ZINC DISSOLVED 22 UGL 011189

)h MERCURY D ISSOLVED 02 UGL 010689

OEPT OF W A T E R RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LA8 REPORT

GATE 021089

I B ID 40897 REPORT TO ELAPP DUE DATE 020489

ClpURCE LOCATION TANS MW-2S COLLECTION DATE 010389

J-ROGRAM 022-KAZARDOUS WASTE AMBIENT WATER SAMPLE Y

JJBMITTED BY ELAPP PHONE 244-87C2 SUBMIT DATE 010489 LEGAL NO

SAMPLE NCTES

UNIT OF REMARKS PROCESS ( IDE TEST NAME RESULT MEASURE CODE DATE

M601 METHOD 601 TESTS 0 NONE T 010689

fSlo2 METHOD 602 TESTS 0 NONE U 010689

S2 ARSENIC DISS - FURNACE 5 UGL 011289

DSE2 SELENIUM OISS - FURNACE 5 UGL 011289

[ gtG2 SILVER DISS - FURNACE 10 UGL 011389

DBE2 BERYLLIUM DISS - FURNACE 10 UGL 011389

L B2 ANTIMONY DISS - FURNACE 50 UGL 011689

C^L2 THALLIUM DISS - FURNACE 2-C UGL 01138S

DCD CADMIUM DISSOLVED 1 UGL 011189

[ R CHROMIUM DISSOLVED 2 UGL 01118S

DCU COPPER DISSOLVED 25 UGL 01llM

C I NICKEL DISSOLVED 5 UGL 01U8S

C B LEAD DISSOLVED 5 UGL 01118C

DZN ZINC DISSOLVED 28 UGL 01118

D JG MERCURY 01 SSOLVED 0-3 UGL 01068-5

DEPT OF WATER RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LAB REPORT

DATE 021089

I IB ID 40898 REPORT TO ELAPP DUE DATE 020489

SOURCE LOCATION TANS MW-3S COLLECTION DATE 010389

fioGRAM 022-HAZARDOUS WASTE AMBIENT WATER SAMPLE Y

i JBMITTED BY ELAPP PHONE 244-8702 SUBMIT DATE 010489 LEGAL NO

SAMPLE NOTES

TFST UNIT OF REMARKS PROCESS C DE TEST NAME RESULT MEASURE CODE DATE

M601 METHOD 601 TESTS 0 NONE T 010689

MSBC2 METHOD 602 TESTS 0 NONE Z 010689

2 ARSENIC DISS - FURNACE 5 UGL 011289

DSE2 SELENIUM DISS - FURNACE 5 UGL 011289

D G2 SILVER DISS - FURNACE 10 UGL 011389

D8E2 BERYLLIUM DISS - FURNACE 10 UGL 011389

D 32 ANTIMONY DISS - FURNACE 50 UGL 011689

r2 THALLIUM OISS - FURNACE 20 UGL 011389

DCO CADMIUM DISSOLVED I UGL 011189

31 CHROMIUM D I S S O L V E D 4 UGL Oi1189

3CU COPPER DISSOLVED 40 UGL 011189

)f NICKEL DISSOLVED 5 UGL 011189

)P~ LEAD DISSOLVED 5 UGL 011189

)ZN ZINC DISSOLVED 22 UGL 011189

)h MERCURY D ISSOLVED 02 UGL 010689

OEPT OF W A T E R RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LA8 REPORT

GATE 021089

I B ID 40897 REPORT TO ELAPP DUE DATE 020489

ClpURCE LOCATION TANS MW-2S COLLECTION DATE 010389

J-ROGRAM 022-KAZARDOUS WASTE AMBIENT WATER SAMPLE Y

JJBMITTED BY ELAPP PHONE 244-87C2 SUBMIT DATE 010489 LEGAL NO

SAMPLE NCTES

UNIT OF REMARKS PROCESS ( IDE TEST NAME RESULT MEASURE CODE DATE

M601 METHOD 601 TESTS 0 NONE T 010689

fSlo2 METHOD 602 TESTS 0 NONE U 010689

S2 ARSENIC DISS - FURNACE 5 UGL 011289

DSE2 SELENIUM OISS - FURNACE 5 UGL 011289

[ gtG2 SILVER DISS - FURNACE 10 UGL 011389

DBE2 BERYLLIUM DISS - FURNACE 10 UGL 011389

L B2 ANTIMONY DISS - FURNACE 50 UGL 011689

C^L2 THALLIUM DISS - FURNACE 2-C UGL 01138S

DCD CADMIUM DISSOLVED 1 UGL 011189

[ R CHROMIUM DISSOLVED 2 UGL 01118S

DCU COPPER DISSOLVED 25 UGL 01llM

C I NICKEL DISSOLVED 5 UGL 01U8S

C B LEAD DISSOLVED 5 UGL 01118C

DZN ZINC DISSOLVED 28 UGL 01118

D JG MERCURY 01 SSOLVED 0-3 UGL 01068-5

OEPT OF W A T E R RESOURCES LAB MANAGEMENT SYSTEM PAGE

FINAL LA8 REPORT

GATE 021089

I B ID 40897 REPORT TO ELAPP DUE DATE 020489

ClpURCE LOCATION TANS MW-2S COLLECTION DATE 010389

J-ROGRAM 022-KAZARDOUS WASTE AMBIENT WATER SAMPLE Y

JJBMITTED BY ELAPP PHONE 244-87C2 SUBMIT DATE 010489 LEGAL NO

SAMPLE NCTES

UNIT OF REMARKS PROCESS ( IDE TEST NAME RESULT MEASURE CODE DATE

M601 METHOD 601 TESTS 0 NONE T 010689

fSlo2 METHOD 602 TESTS 0 NONE U 010689

S2 ARSENIC DISS - FURNACE 5 UGL 011289

DSE2 SELENIUM OISS - FURNACE 5 UGL 011289

[ gtG2 SILVER DISS - FURNACE 10 UGL 011389

DBE2 BERYLLIUM DISS - FURNACE 10 UGL 011389

L B2 ANTIMONY DISS - FURNACE 50 UGL 011689

C^L2 THALLIUM DISS - FURNACE 2-C UGL 01138S

DCD CADMIUM DISSOLVED 1 UGL 011189

[ R CHROMIUM DISSOLVED 2 UGL 01118S

DCU COPPER DISSOLVED 25 UGL 01llM

C I NICKEL DISSOLVED 5 UGL 01U8S

C B LEAD DISSOLVED 5 UGL 01118C

DZN ZINC DISSOLVED 28 UGL 01118

D JG MERCURY 01 SSOLVED 0-3 UGL 01068-5