doncasters new england airfoil, … · a positive "current human exposui'es under...

RDMS DocID 109651

DOCUMENTATION OF EN^^RONMENTAL INDICATOR DETERMINATION Interim Final 2599

RCRA Corrective Action Environmental Indicator (EI) RCRIS code (CA725) ^Âo

Current Human Exposures Under Control ^ ^ 0 A

Facility Name Doncasters (Former INCO) yt r y 9laquo Facility Address 36 Spring Lane Farmington CT ^ ^ 0 ^ y O Facility EPA ID CTD059831479 ÎQ^

X 1 Has all available relevantsignificant information on known and reasonably suspected releases to soil groundwater surface watersediments and air subject to RCRA Corrective Action (eg from Solid Waste Management Units (SWMU) Regulated Units (RU) and Areas of Concern (AOC)) been considered in this EI determination

X If yes - check here and continue with 2 below

If no - re-evaluate existing data or

if data are not available skip to 6 and enterIN (more infonnation needed) status code

BACKGROUND

pefinition of Environmental Indicators (for the RCRA Corrective Action)

Environmental Indicatoi-s (EI) are measures being used by the RCRA Conective Action program to go beyond programmatic activity measures (eg reports received and approved etc) to ti-ack changes in the quality of the environment The tvo EI developed to-date indicate the quality of the environment in relation to current human exposures to contamination and the migration of contaminated groundwater An EI for non-human (ecological) receptors is intended to be developed in the future

Pefinition of Current Human Exposures Under Control EI

A positive Current Human Exposuies Under Contiol EI determmation (YE status code) indicates tiiat there are no unacceptable human exposures to contamination (ie contaminants in concentrations in excess of appropriate risk-based levels) that can be reasonably expected under current land- and groundwater-use conditions (for all contamination subject to RCRA conective action at or from the identified faciUty (ie site-wide))

Relationship of EI to Final Remedies

While Final remedies remain the long-teim objective of the RCRA Corrective Action program the EI aie near-term objectives which are currently being used as Program measuies for the Government Perfonnance and Results Act of 1993 GPRA) The Current Human Exposuies Under Contiol EI are for reasonably expected human exposures xinder cmrent land- and groundwater-use conditions ONLY and do not consider potential future land- or groxmdwater-use conditions or ecological receptors The RCRA Corrective Action programs overall mission to protect human health and the environment requires that Final remedies address these issues (ie potential future human exposure scenarios fiiture land and groundwater uses and ecological receptors)

Duration Applicability of EI Determinations

EI Detenninations status codes should remain in RCRIS national database ONLY as long as they remain u-ue (ie RCRIS status codes must be changed when the regulatoiy authorities become aware of contiary information)

Current Human Exposures Under Control Environmental Indicator (EI) RCRIS code (CA725)

Page 2

Are groundwater soil surface water sediments or aii media known or reasonably suspected to be contaminated above appropriately protective risk-based levels (applicable promulgated standards as well as other appropriate standards guidelines guidance or criteria) from releases subject to RCRA Con-ective Action (firom SWMUs RUs or AOCs)

Yes No X Rationale Key Contaminants Groundwater X_ ___ Hexavalent chromium nickel Air (indoors) X_ Surface Soil (eg lt2 ft) X Hexavalent chromium nickel Surface Water 2 _ Sediment X Subsurf Soil (eg gt2 ft) X_ Hexavalent chromium nickel Ail (outdoors) X_

If no (for all media) - skip to 6 and enter YE status code after providing or citing appropriate levels and referencing sufficient supporting documentation demonstrating that these levels aie not exceeded

If yes (for any media) - continue after ideutifymg key contaminants in each contaminated medium citing appropriate levels (or provide an explanation for the detennination that the medium could pose an xmacceptable risk) and referencing supporting documentation

If unknown (for any media) - skip to 6 and enter IN status code

Rationale and Reference(s) Soil - Residual nickel and hexavalent and total chromium is present in soils beneath the eastern portions of the building the result of releases of metal-containing bruie solutionfrom Tank No 15 This area is subject to an Environmental Land Use Restriction (ELURl which prohibits the removal of the overlying building-Concentrations of nickel and cluomium are documented on page 6 of the February 1997 Environmental Condition Assessment Form (ECAF) Attached) Other releases (nickel) fiom fonner facility operations to soils in the electroshychemical machining CECM) sludge staging area was remediated via excavation in 1994 Groundwater - Overburden groundwater has been documented to have been affected bv hexavalent chromium The present condition of the groundwater is summarized on Table 2 of the 2009 Semi-Annual Natural Attenuation

Groundwater Monitoring Report (see attached) The affected overburden groundwater (located primarily in the deep overburden) has not reached any adjacent parcel Surface Water - Overburden groundwater has not reached or affected surface water as noted in the 2009 Report (noted above) Groundwater appears to have reached steady state and no movement of contamination in the overburden aquifer has been observed for a period of at least five (5) years

Footnotes

Contamination and contaminated describes media containing contaminants (ia any fonn NAPL andor dissolved vapors or solids that are subject to RCRA) in concentrations in excess of appropriately protective risk-based levels (for the media that identify risks within the acceptable risk range)

^ Recent evidence (from the Colorado Dept of Public Health and Environment and others) suggest that unacceptable indoor ah concentiations are more common in stnictures above groimdwater with volatile contambiants lhan previously beUeved This is arapidly developmg field and reviewers aie encouraged to look to the latest guidance for the appropriate methods and scale of demonstration necessaiy to be reasonably certam that indoor aii (in structures located above (and adjacent to) groundwater with volatile contaminants) does not present unacceptable risks


Page 3

3 Are there complete pathways bet veen contamination and human receptors such that exposures can be

reasonably expected under the cunent (land- and groundwater-use) conditions

Summary Exposure Pathway Evaluation Table

Potential Human Receptors (UnderCurrent Conditions)

Contaminated Media Residents Workers Day-Care Constniction Trespassers Recreation Food^ Groundwater No Afr (indoors) Soil (surface eg lt2 ft bull __ No ___ Surface Water Sediment Soil (subsurface eg gt2 ft) No Air (outdoors) ^ Instructions for Sununary Exposure Pathway Evaluation Table

1 Strike-out specific Media including Human Receptorsspaces for Media which are not contaminated) as identified in 2 above

2 enter yes or no for potential completeness under each Contaminated Media - Human Receptor combination (Pathway)

Note In order to focus the evaluation to the most probable combinations some potential Contaminated Media - Human Receptor combinations (Pathways) do not have check spaces ( ) While these combinations may not be probable in most situations they may be possible in some settings and should be added as necessaiy

X If no (pathways are not complete for any contaminated media-receptor combination) shyskip to 6 and enter YE status code after explaining andor referencing condition(s) in-place whether natural or man-made preventmg a complete exposure pathway fi-om each contaminated medium (eg use optional Pathway Evaluation Work Sheet to analyze major pathways)

If yes (pathSvays are complete for any Contaminated Media - Human Receptor combination) - continue after providing supporting explanation

If unknown (for any Contaminated Media - Hiunan Receptor combination) - skip to 6 and enter IN status code

Rationale and Reference(s)_Groundwater condition is essentially static with insufficient mass loading of contaminants at the source to affect downgradient or off-site receptors Affected soil bieneath competent slab-Institutional controls in place to preclude disturbance Reference Section 421 of the 1999 Supplemental Investigation Report New England Airfoil Facility 36 Spring Lane Farmington CT (portions attached)

Indirect PathwayReceptor (eg vegetables fruits crops meat and dairy products fish shellfish etc)


Page 4

Can the exposures from any of the complete pathways identified in 3 be reasonably expected to be significant (ie potentially unacceptable because exposures can be reasonably expected to be I) greater m magnitude (intensityfrequency andor dm-ation) than assumed in the derivation of the acceptable levels (used to identify the contamination) or 2) the combmation of exposure magnitude (perhaps even though low) and contammant concentrations (which may be substantially above the acceptable levels) could result in greater than acceptable risks)

If no (exposures can not be reasonably expected to be significant (ie potentially unacceptable) for any complete exposure pathway) - skip to 6 and enter YE status code after explaining andor referencing documentation justifying why the exposures (from each of the complete pathways) to contamination (identified in 3) are not expected to be significant

^ If yes (exposures could be reasonably expected to be significant (ie potentially unacceptable) for any complete exposure pathway) - continue after providing a description (of each potentially unacceptable exposure pathway) and explaining andor referencmg documentation justifying why the exposures (from each of the remaining complete pathways) to contamination (identified in 3) are not expected to be significant

If unknovn (for any complete pathway) - skip to 6 and enter IN status code

Rationale and Reference(s)_

bull If there is any question on whether the identified exposures are significant (ie potentially unacceptable) consuh a human healthRisk Assessment specialist with appropriate education traming and expenence


Page 5

Can the significant exposures (identified in 4) be shown to be within acceptable limits

If yes (all significant exposures have been shovn to be witliin acceptable limits) shycontinue and enter YE after summarizmg and referencing documentation justifying why all significant exposures to contamination are within acceptable limits (eg a site-specific Human Health Risk Assessment)

If no (there are current exposures that can be reasonably expected to be unacceptable)shycontinue and enter NO status code after providing a description of each potentially unacceptable exposure

_ _ If unknown (for any potentially unacceptable exposure) - continue and enter IN status code

Rationale and Reference(s)

Current Human Exposures Under Control Environmental Indicator (El) RCRIS code (CA725)

6 Check the appropriate RCRIS status codes for the Current Human Exposures Under Confrol EI event code (CA725) and obtain Supervisor (or appropriate Manager) signature and date on the EI determmation below (and attach appropriate supporting documentation as well as a map of the facility)

X YE - Yes Current Human Exposures Under Control has been verified Based on a review of the information contained in this EI Determination Current Human Bxposuies are expected to be Under Control at the Doncasters (fonner New England AirfoiD Facility EPA ID (CTD0S983147f located at (36 Spring Lane Farmington CTl under current and reasonably expected conditions This determination will be re-evaluated when the AgencyState becomes aware of significant changes at the facility

NO - Cunent Human Exposures are NOT Under Conttol

IN - More information is needed to make a determination

Prepared by (signature) ___poundl_ Date July 162010 (print) Robert J Drake PE PhD LBP (title) Senior Project Manager

DEP reviewed 1 by (signature) QsZ^Cf j S r J ^ i D Dale ( I ^ P ^ ^ H L M O

(print) S ^ f ^ M t f e ^ ^ d ^ (title)

DEP Supervisor (signature) p -TS^- -^^ l ^^^ i^ ^^ Date 2-gt - rp (print) 7gtrr) ^ ud f j iy i sT (title) ^ ^ A

(EPA Region or State) CTDEP ^ r^^^^ All References may be found at j j S ^ ^

Connecticut Depailment of Environmental Protection located at 79 Elm Sfreet Hartford Connecticut

DEP file room contact telephone and e-mail numbere bull

Name Terry Parker Phone 860 424-3936 E-mail terryparkerctgov ^

riNAL NOTE THE HUMAN EXPOSURES EI IS A QUALrTATIVE SCREENLNG OF EXPOSURES AND THE DETERMINATIONS WITHIN THIS DOCUMENT SHOULD NOT BE USED AS THE SOLE BASIS FOR RESTRICTING THE SCOPE OF MORE DETAILED (EG SITE-SPECIFIC) ASSESSMENTS OF RISK

6shy

Part V Contaminants in the Environment (cont)

List for each release area the codes for contaminants of concern and for each contaminant the following the number of samples in which the contaminant was detected the maximum and mean concentrations of the contaminant and depth at which the maximum concentration was detected (Check box if an addendum table is used ^ ) Reference Addendum No 7

Provide site name address and town from Part I Item 1 INCO Engineering Products Inc 36 Spring Lane Farmington CT 06032

mdash mdash ^ 1 ^ mdash ~~~^~7 bull

dpntaiTiinants of Cdhtaiiiinahts C6ntani|nants 1 0 Contarhinahts | | | | | i ] | a | ( | A r e | | | coricertitiesteid inspilWaste Jngr(3undi water jn surface vyater

4 GW samples 6 samples Brine solution Cl ND 30000mgl max 302mgl max Tank No 4 10000mglmean llOmg1 mean

(Nortlieast corner of bldg)

Cl 6 samples 0-3f t 2 samples Brine solution ND ^ l200mgkg max 350bmgI max Tank No 15 697mgkg mean 2500mglmean

(East side of bldg)

Na 6 samples 0-3ft ND ND 2100mgkg max

l221mgkg mean

Cr 6 samples 0-3ft ND ND l110mgkg max

463mgkgmean

6 samples 0-3ft Ni ND

2350mgkgmax ND 854mgkg mean

Bureau of Water Management DEP-PERD-PTP200 6 of 8 Rev 100195

SUPPLEMENTAL INVESTIGATION REPORT

Nezu England Airfoil Facility 36 Spring Lane Farmington Connecticut

August 171999

Prepared For

INMETCO Inc co INCO United States Inc PO Box 720 245 Portersville Road Ellwood City Pennsylvania 16117

Prepared By

ENVIRONMENTAL RESOURCES MANAGEMENT Inc 74 Batterson Park Road Farmington Connecticut 06032

40 EVALUATION OF POTENTIAL RECEPTORS AND CONTAMINATION RISK

The following issues are addressed in this Section

e The potential for the presence of an on-going release of contamination at the Site

laquo The identification of critical potential receptors of the identified contamination and

e An evaluation of the likelihood of exposurerisk associated with this contamination

41 EVALUATION OF ON-GOING RELEASE POTENTIAL

The defined area of residual soil contamination (see Decision Document Appendix F) is an area of approximately 50 feet by 210 feet located beneath the eastern wing of the building This is an area where a brine solution was released from facility operations and where chromium and nickel are assumed to exceed Direct Exposure Criteria (DEC) and Pollutant Mobility Criteria (PMC) This release area is the subject of an Environmental Land Use Restriction (ELUR)

As noted in the Decision Document Such polluted soil does not pose a risk to human health provided the building is not demolished and soil is not excavated or disturbed such that people come into contact with it Such polluted soil does not pose a risk to groundwater quality provided the building is not demolished

bull f bull bull

Based on the foregoing it appears that there is residual contamination in soils on the Site but that on-going releases are unlikely due to the impervious cover provided by the building and surrounding pavement The tanks from which the historical release of brine occurred have been removed and no longer serve as an on-going source of contaminants Review of the Conceptual Model of the Aquifer (Section 30) indicates that recharge for the overburden aquifer is derived primarily from areas upshygradient of the identified release areas The identified release areas and the areas affected by the contaminant pltime in the overburden aquifer are located beneath buildings or impervious pavement No direct recharge in these areas which could mobilize soil contaminants is indicated

42 CRITICAL POTENTIAL RECEPTORS

ERM has identified the following critical potential receptors for the contamination identified on the Site

ERM bull 4 -1 bull fprojectslnco71067007002adoc

Employees of the active facility who may be exposed to residual contaminants in the Site soils

bull Scott Swamp Brookthe watercourse located east of the Site which is the assumed discharge location for the overburden aquifer and

laquo Connecticut Spring which may initiate a groundwater recoverytreatment system in the near future and could be affected by contaminants in the overburden aquifer

The CT DEP also indicated that various off-site water supply wells located over 1000 feet to the south on Spring Lane should be evaluated as well However as no contaminant transport in the bedrock aquifer is indicated there is no transport mechanism for the contamination to reach these wells and no further evaluation is indicated

421 Employees of the Facility

The primary means of contact for the employees at the facility is direct exposure (dermal andor ingestion) to contaminated Site soils However as noted in the ELUR Decision Document the presence of the building and the restrictions on its removal andor disturbance of the identified contaminated soils will serve to prevent such exposure So long as the ELUR remains in force and its limitations complied with there is no indication of significant risk associated with the contaminated soil

422 Scott Swamp Brook

The concern with this potential receptor is the discharge of brine andor chromium and nickel to this water body from the overburden aquifer Based on ERMs analysis of contaminant transport in the overburden aquifer there is no dociunented lateral or downgradient movement of significant concentrations of contaminants in the overburden aquifer The most critical parameter hexavalent chromium can be seen to have reached steady state in the overburden aquifer (see Figure 6) Historically samples collected from Scott Swamp Brook have shown no evidence of brine or chromium

Based on this absence of transport in the overburden aquifer there appears to be no significant risk to Scott Swamp Brook

423 Connecticut Spring

The concern with this potential receptor is the transport of brine in the capture zone of the groundwater recovery system anticipated for this property Here the data indicates that there is no significant transport of contaminants in the overburden aquifer onto this adjacent property Further the overburden aquifer along the property boundary is extiemely thin and frequently non-existent Under these conditions future

ERM 4 - 2 fprojectslnco71067007002adoc

transport of contaminants through the overburden aquifer onto the Connecticut Spring property is not considered likely

The absence of significant flow in the bedrock aquifer suggests that transport through this medium would be similarly constrained

Based on the foregoing there appears to be no significant risk of transport of brine or metals through the overburden or bedrock aquifers onto Connecticut Spring property in quantities which would affect the performance of the anticipated groundwater recovery system

In summary the documented soil contamination is isolated form direct exposure through the use of the ELUR while significant groundwater contamination has not (and appears not to be likely to) spread beyond the property boundary

ERM 4 -3 fprojectslnco71067007002adoc

1 Februaa-y 2010 Reference 0101729

Mr Rich Krystanowicz Director Human Resources Doncasters Inc 36 Spring Lane Farmington Comiecticut 06032

Re Semi-Annual Natural Attenuation Groundwater Monitoring Report - Summer amp Winter 2009 New England Airfoil Facility 36 Spring Lane Farmington Connecticut

Dear Mr Krystanowicz

ERM Consulting amp Engineering Inc (ERM) is pleased to submit this Semi-Annual Natural Attenuation Grotindxoater Monitoring Report for the New England Airfoil Facility located at 36 Spring Lane in Farmington Connecticut (the Site) This letter report suromarizes the current and historical groundwater quality data describes the calculated direction of groimdwater flow and provides an assessment of current progress of the natural attenuation process

REVIEW OF MONITORING PROGRAM

The revised (and approved) Natural Attenuation Monitoring Program (NAMP) consists of the semi-amiual collection and analysis of samples from the following locations

o Monitoring Wells MW-6a MW-8 MW-9 and MW-13

Sampling of these wells was conducted on July 8 and December 11 2009 Prior to collection of groundwater samples groundwater elevations were determined in all accessible on-site and off-site wells Bediock elevations were not determined prior to collection of gromidwater samples due to accessibility issues The water level data determinations poundUe included in the attached Table 1

Environmental Resources Management

n Hartland Street Suite 300 East Hartfoi-dCT 06108 (860) 466-8500 (860) 466-8501 (fax)

I I

-----amp -

bull ^ -raquo - - ^ i l n m

Mr Rich Kiystanowicz 1 February 2010 Page 2

Laboratory analysis was conducted as follows

a Sodium chloride soluble chromium and hexavalent chromium at wells MW-6A MW-9 and MW-13 and

e Total Petroleum Hydrocarbons (TPH) at MW-8 and MW-13

FINDINGS AND ANALYSIS

The following is a summary of the notable observations during the July and December 2009 natural attenuation monitoring events

Groundivater Flow Direction

Figure 1 and Figure 2 show the overburden water table elevation contours for July and December respectively flowing to the southeast similar to historical sampling events

Groundivater Analytical Results

The analytical results from the NAMP sampling and liistorical analytical results can be found in the attached Table 2 As was the case dtiring the previous sampling events water samples contained excessive amounts of silt and other fine materials All samples were filtered in the laboratory and all reported results reflect soluble concentrations only Based on this data the following observations are made

o Soluble chromium was detected in MW-9 and MVy-6a at concentrations above the GA Groundwater Protection Criteria (GWPC) of 005 milligrams per liter (mgL) for the July and December 2009 sampling events respectively Analytical results for the July 2009 sampling event indicated a decrease in soluble chroijnium concentrations in groundwater samples collected from MW- 6a MW-9 and MW-13 relative to the previous December 2008 sampling event however the concenhation of soluble chromium in groundwater samples collected from MW-9 remained above the GWPC at 0172 mgL Analytical results for the December 2009 sampling event indicated an increase in soluble chiomium concentrations in groundwater samples collected from MW-6a and MW-13 where the MW-6a sample exceeded the GWPC at 00522 iTigL and a decrease in soluble chroinium concentTations for the MW-9 sample below laboratory detection limits


r T T bullA4i Rich KrStauowicz1 n 1 nrnn1 Februari2010bdquo bdquo bullPage 3 bull

raquo Hexavalent chromium was detected in groundwater samples collected from MW-6a MW-9 and MW-13 at concentrations in excess of the SWPC of 011 mgL for the July 2009 sampling event and was not detected in excess of the SWPC of 011 mgL for the December 2009 sampling event Analytical results for the July 2009 sampling event indicated an increase in hexavalent cluomium concentrations in groundwater samples collected from MW-13 a decrease in hexavalent chromium concentrations in groundwater samples collected from MW-9 and hexavalent concentrations remained unchanged in groundwater samples collected from MW-6a relative to the previous December 2008 sampling event Analytical results for the December 2009 sampling event indicated a decrease in hexavalent chroinium concentrations in groundwater samples collected from MW-6a MW-9 and MW-13 to below the SWPC of 011 mgL

0 As indicated by analytical results TPH was detected above laboratory Method Detection Limits (MDLs) normally the same value as the GA GWPC for the July and December 2009 sampling event TPH in groundwater collected from MW-8 exceeded tlie GA GWPC value of 01 mgL Overall the July and December 2009 sampling eventsi indicated decreasing levels of TPH from the December 2008 sampling event

SUMMARY AND CONCLUSIONS

The sixteenth and seventeenth semi-amiual sampling events of the NAMP at the former New England Airfoil facility in Farmington Connecticut were conducted on July 8 2009 and December 11 2009 Based on these results and observations the following assumptions have been made

o Overburden gromidwater samples indicate that concentrations appear to be generally similar to previous levels

o Groundwater flow directions are consistent with former findings and

o Continuation of the revised NAMP sampling effort appears warranted due to residual concentrations of chromiiim and TPH remaining above applicable standards

Environmental bdquo

Resources ^bdquo Management

bdquo Environmental Mr Rich Krvstaiiowicz bdquo V laquolaquo Resources P a g e r Management

Please call the undersigned with any questions regarding tliis submittal

Regards

Robert Drake PE PhD LEP Senior Project Manager

Michael B Teetsel CPG Principal

Enclosures Table 1 Groundwater Elevation Determination Table 2 Smmnary of Groundwater Analysis Data Since 1992 Figure 1 Overburden Groundwater Contours July 2009 Figure 2 Overburden Groundwater Contours December 2009 Appendix A Laboratory Certificates of Analysis

0101729REPORT - 2009DONCASTERS FARMINGTON GROUNDWATER MONITORING REPORT FINAL 1 FEBRUARY 2010DOC

IUIAJMlaquo-shy

^ bull r

UW1 f

B

O

Î J i

raquo

aWlOWUOHrroKNGWaiLOMTKN (SCREpoundMpoundDATCROUNnYiMERTftetpound]

(SCREENED AT TOP OF DEDBXKI

ASANOCMaS MONHORMC WOLS

STORM ^WERCATCMOASn

MVMIE

STORM SEWER P tPDJC

PROPERTYUe

CS0UrmvATERELpoundVAT10N(FEE0

CROUNWWERCaVIOlRlFEH)

SO 0 Sala(l=1ixn SO 100

Figure 1 - Overburden Groundwaler Contours

July 2009

New England AirfoK Facility

36 Spring Lane

Farmington CT H R M j

Oft^ X BEDROQCWEU

STl STREAM aIPlpound bdquoj^raquo SHXIOWUOWTORWOWILLOCATCT ^ ISCREENECATCROUNOVMTEHTABIE)

^ (KREENEOATTOPCFDEOtOCXI

lAVI + A1Uraquo)0NpoundD UONtTORWC WEL13

a STOflW SEWER CATCH flASW

o MANHOtE

5T0RAISEWEBP1PEIWE

PROPSiTTLtC

âr CROWDWATEREteVATlOrtiFEET)

mdash cRaulaquoDVArERcotnajRFEEn

Figuro 2 - Overburden Groundwater Contours December 2009

New England Airfoil Fadlity i | 36 Spring Lane i i^ Farmington CT BR M

Table 1 Groimdwater Elevation Determination New England Airfoil

36 Spring Lane Farmington CT Work Order No 0017573

OVERBURDEN WELL SUMMARY TAB LE Well Casing DTW (ft) Groundwater DTW (ft) Groundwater

ID Elevation (ft) 782009 Elevation 12112009 Elevation MW-14 22844 1665 21179 1798 21046

bullMW-13A 23273 destroyed destroyed | MW-13 23311 1661 2165 179 21521 MW-15 22642 NF - NF shyMW-ll 22756 2267 20489 24S2 20274 MW-9 23157 249 20667 2601 20556 MW-6a 23227 1603 21624 1729bdquo 21498 MW-8 23378 1428 2195 1473 21905

bullMW-17 22308 1422 20685 1467 20841

BEDROCK WELL SUMMARY TABLE WeU Casing DTW (ft) Groundwater DTW (ft) Groundwater |

ID Elevation (ft) 782009 Elevation 12112009 Elevation |

BR-9 23343 destroyed destroyed | BR-17 BR-18

2243 21952

NM ISTF

--

NM NF - 1

BR-4 22650 NM - NM -

WeU Casing DTW (ft) DTB (ft) DTW (ft) DTB (ft) 1

ID Elevation (ft) 782009 12112009 1 MW-1 Unknown 1623 2414 1738 2414 MW-2 Unknown 1727 2603 184 2603 MW-6 Unknown 1508 2221 bull 1577 2221

NM = Not Measured NF = Not Found

ERM Inc Table 1 WellElevationTablexk 1112010Pagel of 1

T A B L E a J

SUMMAnYOPINORGANICGnOUNDWATra ANALYSIS SINCE 199 Nm Enjtaltid Aii((iil 36 Spiini LmnFimtiraquojfwt CT

5 f l laquo p raquo H f D i f t NAlff 1 1

raquobull a I S I L L I D A N A L Y I l i 9 9C A C H T C S1PC 3

raquo 6 l S 1 1 f 1 ^ 6

1 J 1 1 -1 i 4- bull 1-11 9 - bull bull bull i 1 1 I 1i bull 5 - 11- -1 bull1 bull I 1 14 1i bull

a 7 t sect bull bull 5 r

K B 167 f m ^ I W Voo V M I J l U 1 ^ U raquo 1 ^ 1 I J I U l TO 1900 Vra 190J 1900 1TO i ^ 17M 15(0 1laquoV1 uoo iitrade t laquo laquo 12S0 791 641 33 2 ) 1 434 161 1 1 is ^w 93J 711

NG l A O ) laquo 0 Z J M 540) vtrade lt 0 ) l JJ50 3CT 4100 1700 ^ 4 laquo ) 1300 116 31E eso ampmlaquoA T o t i l Q bullOB bullbull NE OBI 091 aw u o u o I JO 1X0 uso I JO L W u o 170 u o u o U l U 6 1poundJ r7 a^ I J W I M 0351 a m 11731 0 7 1 1 - 0 2 M O M 04 a n a j i i 016 OlCfi Oiraquo4 D0457 o o i 11

K E u n l t n l C I D J l 0 6 J O90 (lAi 9179 O M I B S 1^0 140 I J O l i O L90 U B l A O L W 135 140 1 4 0 I M 1 J 0 nn3 araquo50 - f t l o i l OJS 0 4 1 a t t i B17 O l raquo o i l c O ^ lt O i i

Vm

bull N k b oes 4 1 4 O M om om 0 3 1 015 om e O ( S ou W l - B O i lt j i n bulllaquo0C8 O O l l l bull o f m - bull4L0175 -BOIO bull bull bull T W KB ltlaquoraquo 11 lt l l laquo l lt ] t o i 1 bull ( t t l bull411 bull O l 11 bull4LI 17 I S

Sodium NE U 4 3 laquo0 I W ) v r o W M 11M 1 ^ t J 3 0 ] ^ I f W ) fm 1 ^ 1 ^ 1400 lyTO 1 ^ 1M0 1430 MW m laquo I W ) 679 490 366 117 - 1 9 1 173 390 bull j l l I S I JM 141 164 711 + Chl f l r td N B NE 3 ^ vco WOO I M U V I4S0 1Eraquo VW V M y f a U U I 7400 1VU VO) ^ y x i 1400 7 0 1700 i m 1100 SCO (03 W ) 610 351 sa S12 433 M raquo 7 M l im 191 317 470 VW Vm litrade

VVfi -^ T o U Q NB 3J8 SU 4_1laquo laquo 0 JJO 5J0 17U AIO 410 n o J M i m u o I f f 1S6 n t U araquo3 IJOO O J U a4lt a M 3 1U7I I J ( t DLraquo1 DJS9 0JJ7 oilaquolaquo o a r BlaquoJ a i T i

NE a i l 361 4 raquo J 2 l-AO 5 J 0 I M U O i t a 370 JJO 7 U 110 - i n o bull )7B 715 i raquo asco 057 laquo J 3 0 7 1 0 J laquo 031 065 DU 04S DLJOO 4I 0W gtlaquo Nlcto l a i ltaai 011 U J oogt O M 008 bullW 90S O H J lt101 O M ltamo lt1Jraquo5 lt00111 lt1C0) ooa lt1017S bullOCIOO 5 laquo U a m m b raquo I f f l i raquo MS 510 laquo 0 t u bull I U 470 430 4 raquo 400 m VR 2 M 193 S i i l 220 i m - 779 219 213 KO CWf l r id N I 1 ^ ] 3Iraquo SXD 1000 l A O 7 laquo raquo 657 BSJ 710 f73 710 MO 630 uo f f a SW UO 410 310 V O 43) uo W 710 r o IJO ISO 140 I U 253 133 714

MVV- l l bull Total Q NE 002 OJO OOI M U O U D09 0 J 2 0D1I O i l O M OJD OJP OJM OJU 0104 aou o i l ) DJ I6 0J)U4 013 L S W 0 D 3 U o w n 0(061 0CU19 aoin Hraquogti-raquoJenl C I O i l 0 0 U1I ow O M 014 O U a i Q IH15 IIJH lt0OZ 003 0 0 7 007 M I n i l n u bullq)io O i l 0067 oos OJraquoS aojo aou OJ

N I c l a i O H OJU (QO ltaot OJO lt0 03 ltlt0AI l O S J lt 0 laquo ltao3 lt a Q i ltaoJ o m 001 o jno lt10]J9 bull lt j n 7 3 bull4L0H) 4 0 1 0 TPh + O i l 4 1 1 bull laquo 1 bull laquo J bull41 bulllt11 - 4 1 bullltai lt0 l 4 1 1 4 1 1

SffUam bull H I t a i i m 13JO0 laquo00 I J O J amp m l a u t a o t M O WOO JJOO 330 S ^ j laquo f l zu 1 laquo 251 7 laquo

i m - i j NB RT ) raquo raquo bull bull bull Klaquo i bullB l J ih rf i t r i K UTOl F l 4t t 7an (^Wl 1laquoX) 14m- - 7 1 1 1 1 1 0 To ( IC i bullOJ) NH U S O W L M U O 1-JO a i l O l t n u rtM nmH 00914 aoui

H e a i i t o X O bull bull N I bull O i l OSJ I E ) I M laquo J 7 N D Dm O U 150 170 U O 2 laquo IJO leo 0 7 1 040 01S0 011 n i l OJS O J I a i 4 007 ^ I f O OJPO -nwi 0X91 Llia 007 lt|L123 lt(JraquoS lta ia OQJO l U l l i b DOS ltUUJ bull N n U 0 1 0 pound l 00i ltCUJ1 0 2 1 a e ltao 0014 0 0 1 o a n lt i -m bull41017 bull41003 0 0 1 7 5 bulldiooa -OOI

TPt bull 0 1 ltni +-H t l - bull raquo t S r f h m NE 13^000 i i t f n 7 W 749 low raquo 9 m ^ 1 ^ 196

K t W - i j i O J o r i d S J trade 1003 i ^ n i o bull n i K a i i j x n 7 ^ 1 ^ i laquo i M l 361 ica X T O U I Q V O 77J 2 laquo 170 0 1 ) 0E t7 i M n n 4 M

l T 1 4 ) 1 J raquo l i O nw U l n m 014 (16 N t h l U J I J i 013 ltnsa 0017 oaa n laquo i ltiino

S W m a ME itrade i r i 117 l i s 144 160 atartd JSO W 101 S Z I 247

K l gt - - H J ae lt ] 0 ) g j i 0ltSI 00135 DXY DXY DRV 01)147 00303 aoraquo4 CHT aam H E u i - ^ l m r O w v ftll lt l l t D ltttiCO 0016 lt i in fgt

bull K k i i 0 1 M l ltmno 4UB3 k n r 1 9 bull K f c t a 0 1 0 laquo I K lt(iOJ QOl lt l i ) IO -aoio O i O O bullflXOlW 4L01 lt c n 7 j n o o +

scrf l- bull N I bull NE bull 79 T9B 3 3 5 bull bullbull Q J laquo U bullbull N I 19 BO 57 M 97 i 7 1 raquo

MW-17 bull bull r ^ i c i lt3CI5 OOU O07J 0031 OODS lt i ( i i n H o i v t f c n t Cr OOI 003 0 3 002 ^ n i f p ltaou ltaoM -om5- bulldlOlO

ltOI110 OtCQ OCCI OC05 O i t S -OMft 0004 N E m raquo 1 327 J4J m I J l 40X1 511 i M 115 131 I B ) bull m )7a 161

- NB MO m KO ISO u bull J X i J f l 110 1 M 4 U 147 64 46E 117 BR-9 bull bull - -TotalCi cue NB bull 07J as7 OES o i l bull L M M l oca n i t a m 0136 00990 IL1U lt l i U l ( O O U I 0121

H e u n l w i i C i a n bull ao9 030 laquo i raquo a 4 i laquotno o u oim a i 7 aiss (CLSa a i l lt u n o OO l l 0 1 1 bull 0 1 o laquo ltL010 41001 O 0 1 1 1 lt u c o ltID330 bull410150 -aaa ltLI1175 a o B f

S - l t a n M S ltl I U Chfar id 476 3 4 J

Blt17 ltU13U ^

oox laquo ltuaa o i l N O ltL(no doi 001 0007 T J B 3 shy

^ I L U I I bulljioaM UUU30 eO iU I )

1raquo bull bull

Chlor id NK MJ BR-IS T c W Q g^B- bullWSO ltAoUI O O V l 41010)

bull NB bull O H 0 1 lti(no ^ t m ltoinii bullltaoiis ao3Craquo 0016] aoosi bull41017 mui ltO01

S ix lk m bull K B NE 113 ni I S J I S J M i ) 144 3 0 1 1B6 3 r - i bull T o l i i Q bullQBS N I 0007 lt ]Cf f i laquoaoa5 lttoau bullOXO30 ltLano bullltLaH bull q ) i o i lt f l a )a ltaoo3

T o U l M bull OJ bullOES lt1pound0J o o u ltoaB bulloiaB) 4 ) COM bulltLOQM bulllt0Dn3 41iXH

SwUmn bullNE bull NE 115 411 19J 136 140 146 J l J U l 115 I 9 J ST-J r s t i i o bullbull O t a NE lt ioa3 L J A O O H lt l j B i Q bullomso a o u ltun i -lOOOS

T O B J N bull a i O H - bulloos bulllt10O3 -otfraquo bull4L0011 OOBO 4UXIJ0 lt a j a i bull4)00J ltaoa) N o l u

BUi ikCc) dnaed ND N oldctr t r i K E C i I t f t l l U i n l i b i l J x L BcldlT] p t l n l l u W o c r rfupound mOMC r i len i h l M t a I t J t n F W 4 i y

bull A n laquo I r r d l n a l o l P A i v i h o d S W t l J C^w n K i x a fat the mrtaL ^ ov M could rlaquo l t w pound r f U c d

bull bull i l V e D Vi - r rCbur fa lun] i n o w p u i h r d J l lhec J g n i r f U n t t o W r l U + ^ A t r a n J HV-13h M W I J lt s n p W

J - n M I M l y i f d l c - M h t t C l N A M P A l t o m cnlbirii4 Pioxia i i n d t t t f r u n i i d e ] i f i ( e x c Q ) t gt r a (thimrn K T t d r H i i l t i gt f t r v r a i n r d

t S u r T l f i j J t r y H R P A v C N l i l i i u n i a i J u l b r E U l t l K t m t u

-

bull7^-Si bull

C p K t gt n ^ H M TtKt 3 C1V4I i J fA IT i Kfclnta i ^


Are groundwater soil surface water sediments or aii media known or reasonably suspected to be contaminated above appropriately protective risk-based levels (applicable promulgated standards as well as other appropriate standards guidelines guidance or criteria) from releases subject to RCRA Con-ective Action (firom SWMUs RUs or AOCs)

Yes No X Rationale Key Contaminants Groundwater X_ ___ Hexavalent chromium nickel Air (indoors) X_ Surface Soil (eg lt2 ft) X Hexavalent chromium nickel Surface Water 2 _ Sediment X Subsurf Soil (eg gt2 ft) X_ Hexavalent chromium nickel Ail (outdoors) X_

If no (for all media) - skip to 6 and enter YE status code after providing or citing appropriate levels and referencing sufficient supporting documentation demonstrating that these levels aie not exceeded

If yes (for any media) - continue after ideutifymg key contaminants in each contaminated medium citing appropriate levels (or provide an explanation for the detennination that the medium could pose an xmacceptable risk) and referencing supporting documentation

If unknown (for any media) - skip to 6 and enter IN status code

Rationale and Reference(s) Soil - Residual nickel and hexavalent and total chromium is present in soils beneath the eastern portions of the building the result of releases of metal-containing bruie solutionfrom Tank No 15 This area is subject to an Environmental Land Use Restriction (ELURl which prohibits the removal of the overlying building-Concentrations of nickel and cluomium are documented on page 6 of the February 1997 Environmental Condition Assessment Form (ECAF) Attached) Other releases (nickel) fiom fonner facility operations to soils in the electroshychemical machining CECM) sludge staging area was remediated via excavation in 1994 Groundwater - Overburden groundwater has been documented to have been affected bv hexavalent chromium The present condition of the groundwater is summarized on Table 2 of the 2009 Semi-Annual Natural Attenuation

Groundwater Monitoring Report (see attached) The affected overburden groundwater (located primarily in the deep overburden) has not reached any adjacent parcel Surface Water - Overburden groundwater has not reached or affected surface water as noted in the 2009 Report (noted above) Groundwater appears to have reached steady state and no movement of contamination in the overburden aquifer has been observed for a period of at least five (5) years

Footnotes

Contamination and contaminated describes media containing contaminants (ia any fonn NAPL andor dissolved vapors or solids that are subject to RCRA) in concentrations in excess of appropriately protective risk-based levels (for the media that identify risks within the acceptable risk range)

^ Recent evidence (from the Colorado Dept of Public Health and Environment and others) suggest that unacceptable indoor ah concentiations are more common in stnictures above groimdwater with volatile contambiants lhan previously beUeved This is arapidly developmg field and reviewers aie encouraged to look to the latest guidance for the appropriate methods and scale of demonstration necessaiy to be reasonably certam that indoor aii (in structures located above (and adjacent to) groundwater with volatile contaminants) does not present unacceptable risks


Page 3















Page 4








Page 5




















6shy









(East side of bldg)


l221mgkg mean


463mgkgmean






August 171999

Prepared For


Prepared By










bull f bull bull

































I I

-----amp -






















Environmental bdquo




Regards





IUIAJMlaquo-shy

^ bull r

UW1 f

B

O

^I J i

raquo




STORM ^WERCATCMOASn

MVMIE

STORM SEWER P tPDJC

PROPERTYUe





July 2009


36 Spring Lane


Oft^ X BEDROQCWEU





o MANHOtE

5T0RAISEWEBP1PEIWE

PROPSiTTLtC










bullMW-17 22308 1422 20685 1467 20841




2243 21952

NM ISTF

--

NM NF - 1

BR-4 22650 NM - NM -





T A B L E a J




raquo 6 l S 1 1 f 1 ^ 6






Vm






















Blt17 ltU13U ^



1raquo bull bull












-

bull7^-Si bull

















Page 4








Page 5




















6shy









(East side of bldg)


l221mgkg mean


463mgkgmean






August 171999

Prepared For


Prepared By










bull f bull bull

































I I

-----amp -






















Environmental bdquo




Regards





IUIAJMlaquo-shy

^ bull r

UW1 f

B

O

^I J i

raquo




STORM ^WERCATCMOASn

MVMIE

STORM SEWER P tPDJC

PROPERTYUe





July 2009


36 Spring Lane


Oft^ X BEDROQCWEU





o MANHOtE

5T0RAISEWEBP1PEIWE

PROPSiTTLtC










bullMW-17 22308 1422 20685 1467 20841




2243 21952

NM ISTF

--

NM NF - 1

BR-4 22650 NM - NM -





T A B L E a J




raquo 6 l S 1 1 f 1 ^ 6






Vm






















Blt17 ltU13U ^



1raquo bull bull












-

bull7^-Si bull










Page 5




















6shy









(East side of bldg)


l221mgkg mean


463mgkgmean






August 171999

Prepared For


Prepared By










bull f bull bull

































I I

-----amp -






















Environmental bdquo




Regards





IUIAJMlaquo-shy

^ bull r

UW1 f

B

O

^I J i

raquo




STORM ^WERCATCMOASn

MVMIE

STORM SEWER P tPDJC

PROPERTYUe





July 2009


36 Spring Lane


Oft^ X BEDROQCWEU





o MANHOtE

5T0RAISEWEBP1PEIWE

PROPSiTTLtC










bullMW-17 22308 1422 20685 1467 20841




2243 21952

NM ISTF

--

NM NF - 1

BR-4 22650 NM - NM -





T A B L E a J




raquo 6 l S 1 1 f 1 ^ 6






Vm






















Blt17 ltU13U ^



1raquo bull bull












-

bull7^-Si bull






















6shy









(East side of bldg)


l221mgkg mean


463mgkgmean






August 171999

Prepared For


Prepared By










bull f bull bull

































I I

-----amp -






















Environmental bdquo




Regards





IUIAJMlaquo-shy

^ bull r

UW1 f

B

O

^I J i

raquo




STORM ^WERCATCMOASn

MVMIE

STORM SEWER P tPDJC

PROPERTYUe





July 2009


36 Spring Lane


Oft^ X BEDROQCWEU





o MANHOtE

5T0RAISEWEBP1PEIWE

PROPSiTTLtC










bullMW-17 22308 1422 20685 1467 20841




2243 21952

NM ISTF

--

NM NF - 1

BR-4 22650 NM - NM -





T A B L E a J




raquo 6 l S 1 1 f 1 ^ 6






Vm






















Blt17 ltU13U ^



1raquo bull bull












-

bull7^-Si bull










(East side of bldg)


l221mgkg mean


463mgkgmean






August 171999

Prepared For


Prepared By










bull f bull bull

































I I

-----amp -






















Environmental bdquo




Regards





IUIAJMlaquo-shy

^ bull r

UW1 f

B

O

^I J i

raquo




STORM ^WERCATCMOASn

MVMIE

STORM SEWER P tPDJC

PROPERTYUe





July 2009


36 Spring Lane


Oft^ X BEDROQCWEU





o MANHOtE

5T0RAISEWEBP1PEIWE

PROPSiTTLtC










bullMW-17 22308 1422 20685 1467 20841




2243 21952

NM ISTF

--

NM NF - 1

BR-4 22650 NM - NM -





T A B L E a J




raquo 6 l S 1 1 f 1 ^ 6






Vm






















Blt17 ltU13U ^



1raquo bull bull












-

bull7^-Si bull




August 171999

Prepared For


Prepared By










bull f bull bull

































I I

-----amp -






















Environmental bdquo




Regards





IUIAJMlaquo-shy

^ bull r

UW1 f

B

O

^I J i

raquo




STORM ^WERCATCMOASn

MVMIE

STORM SEWER P tPDJC

PROPERTYUe





July 2009


36 Spring Lane


Oft^ X BEDROQCWEU





o MANHOtE

5T0RAISEWEBP1PEIWE

PROPSiTTLtC










bullMW-17 22308 1422 20685 1467 20841




2243 21952

NM ISTF

--

NM NF - 1

BR-4 22650 NM - NM -





T A B L E a J




raquo 6 l S 1 1 f 1 ^ 6






Vm






















Blt17 ltU13U ^



1raquo bull bull












-

bull7^-Si bull










bull f bull bull

































I I

-----amp -






















Environmental bdquo




Regards





IUIAJMlaquo-shy

^ bull r

UW1 f

B

O

^I J i

raquo




STORM ^WERCATCMOASn

MVMIE

STORM SEWER P tPDJC

PROPERTYUe





July 2009


36 Spring Lane


Oft^ X BEDROQCWEU





o MANHOtE

5T0RAISEWEBP1PEIWE

PROPSiTTLtC










bullMW-17 22308 1422 20685 1467 20841




2243 21952

NM ISTF

--

NM NF - 1

BR-4 22650 NM - NM -





T A B L E a J




raquo 6 l S 1 1 f 1 ^ 6






Vm






















Blt17 ltU13U ^



1raquo bull bull












-

bull7^-Si bull






























I I

-----amp -






















Environmental bdquo




Regards





IUIAJMlaquo-shy

^ bull r

UW1 f

B

O

^I J i

raquo




STORM ^WERCATCMOASn

MVMIE

STORM SEWER P tPDJC

PROPERTYUe





July 2009


36 Spring Lane


Oft^ X BEDROQCWEU





o MANHOtE

5T0RAISEWEBP1PEIWE

PROPSiTTLtC










bullMW-17 22308 1422 20685 1467 20841




2243 21952

NM ISTF

--

NM NF - 1

BR-4 22650 NM - NM -





T A B L E a J




raquo 6 l S 1 1 f 1 ^ 6






Vm






















Blt17 ltU13U ^



1raquo bull bull












-

bull7^-Si bull






















Environmental bdquo




Regards





IUIAJMlaquo-shy

^ bull r

UW1 f

B

O

^I J i

raquo




STORM ^WERCATCMOASn

MVMIE

STORM SEWER P tPDJC

PROPERTYUe





July 2009


36 Spring Lane


Oft^ X BEDROQCWEU





o MANHOtE

5T0RAISEWEBP1PEIWE

PROPSiTTLtC










bullMW-17 22308 1422 20685 1467 20841




2243 21952

NM ISTF

--

NM NF - 1

BR-4 22650 NM - NM -





T A B L E a J




raquo 6 l S 1 1 f 1 ^ 6






Vm






















Blt17 ltU13U ^



1raquo bull bull












-

bull7^-Si bull




Regards





IUIAJMlaquo-shy

^ bull r

UW1 f

B

O

^I J i

raquo




STORM ^WERCATCMOASn

MVMIE

STORM SEWER P tPDJC

PROPERTYUe





July 2009


36 Spring Lane


Oft^ X BEDROQCWEU





o MANHOtE

5T0RAISEWEBP1PEIWE

PROPSiTTLtC










bullMW-17 22308 1422 20685 1467 20841




2243 21952

NM ISTF

--

NM NF - 1

BR-4 22650 NM - NM -





T A B L E a J




raquo 6 l S 1 1 f 1 ^ 6






Vm






















Blt17 ltU13U ^



1raquo bull bull












-

bull7^-Si bull


IUIAJMlaquo-shy

^ bull r

UW1 f

B

O

^I J i

raquo




STORM ^WERCATCMOASn

MVMIE

STORM SEWER P tPDJC

PROPERTYUe





July 2009


36 Spring Lane


Oft^ X BEDROQCWEU





o MANHOtE

5T0RAISEWEBP1PEIWE

PROPSiTTLtC










bullMW-17 22308 1422 20685 1467 20841




2243 21952

NM ISTF

--

NM NF - 1

BR-4 22650 NM - NM -





T A B L E a J




raquo 6 l S 1 1 f 1 ^ 6






Vm






















Blt17 ltU13U ^



1raquo bull bull












-

bull7^-Si bull


Oft^ X BEDROQCWEU





o MANHOtE

5T0RAISEWEBP1PEIWE

PROPSiTTLtC










bullMW-17 22308 1422 20685 1467 20841




2243 21952

NM ISTF

--

NM NF - 1

BR-4 22650 NM - NM -





T A B L E a J




raquo 6 l S 1 1 f 1 ^ 6






Vm






















Blt17 ltU13U ^



1raquo bull bull












-

bull7^-Si bull







bullMW-17 22308 1422 20685 1467 20841




2243 21952

NM ISTF

--

NM NF - 1

BR-4 22650 NM - NM -





T A B L E a J




raquo 6 l S 1 1 f 1 ^ 6






Vm






















Blt17 ltU13U ^



1raquo bull bull












-

bull7^-Si bull


T A B L E a J




raquo 6 l S 1 1 f 1 ^ 6






Vm






















Blt17 ltU13U ^



1raquo bull bull












-

bull7^-Si bull


doncasters new england airfoil, … · a positive "current human exposui'es under...

Documents