risk-based cleanup plan, phase 2 modification …

RISK‐BASED CLEANUP PLAN PHASE II MODIFICATION SUPPLEMENT FORMER TRANSFORMER AREAS 1, 2, AND 21 TOXIC SUBSTANCES CONTROL ACT (40 CFR 761.61 [c]) Mystic Station 173 Alford Street Charlestown, Massachusetts

November 2018 File No. 01.0015442.76

PREPARED FOR: Constellation Mystic Power LLC Baltimore, Maryland

GZA GeoEnvironmental, Inc. 249 Vanderbilt Avenue │ Norwood, MA 02062 800‐789‐5848 31 Offices Nationwide www.gza.com

An Equal Opportunity Employer M/F/V/H

November 20, 2018 File No. 01.0015442.76 Ms. Kimberly N. Tisa (CPT) EPA‐New England Region 1 5 Post Office Square ‐ Suite 100 Boston, MA 02109‐3912 Re: Phase II Modification Supplement to the Final TSCA Risk‐Based Cleanup Plan Related to RCRA Corrective Action Requirements

MassDEP Release Tracking Number 3‐29680 Mystic Station, 173 Alford Street Charlestown, Massachusetts

Dear Ms. Tisa:

On behalf of Constellation Mystic Power, LLC, which is a wholly owned subsidiary of Exelon Generation Company, LLC, GZA has prepared the attached modification supplement to the Risk‐Based Cleanup Plan (“the Plan”) which was submitted to the United States Environmental Protection Agency (USEPA) on December 7, 2017 and was conditionally approved by the USEPA in a letter to Mystic Station and GZA dated March 23, 2018. The Plan addressed decommissioned Transformer areas 3, 4, 5, 6, and 11. A modification to the Plan was submitted to the USEPA on April 30, 2018, to incorporate the contiguous Transformer 1, 2, and 21 Area as part of the Plan. The Plan is divided into two phases: Phase I is intended to address certain surficial impacts; Phase II is intended to address deeper impacts. Mystic Station has initiated the Phase I Plan to address exposed concrete and brick surfaces that are above the cleanup goal (25 mg/kg), and remove the top 1 to 2 feet of surface trap rock and gravel within the transformer areas, including the Transformer 1, 2, and 21 Area; Phase I remediation for all the transformer areas will occur concurrently and in accordance with USEPA’s March 2018 approval of the Plan.

This Modification supplement is specific to the Phase II portion of the Plan for the Transformer 1, 2, and 21 Area. This Modification supplement addresses comments received from USEPA on the proposed approach. This Modification to the approved Plan summarizes the supplemental investigations and data recently collected. It includes attachments (data tables, exploration location figures, exploration logs, and laboratory analytical reports) related to the decommissioned Transformer 1, 2, and 21 Area, and provides a justification of the selected remedy.

If you have questions or need further information, please contact the undersigned at (781) 278‐3700.

Very truly yours,

GZA GEOENVIRONMENTAL, INC.

Jason R. Chrzanowski David E. Leone Senior Project Manager Consultant/Reviewer Gregg McBride Senior Principal Attachments: Phase II Modification (Transformer 1, 2, and 21 Area) cc: Ms. Katherine Woodward, USEPA Mr. Juan Perez, USEPA Ms. Julea Hovey (Exelon Generation) Mr. Gary Basilesco (Constellation Mystic Power LLC)

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November 20, 2018 Phase II Modification Supplement to the Risk‐Based Cleanup Plan

File No. 01.0015442.76 TOC | i

TABLE OF CONTENTS

1.0 INTRODUCTION ............................................................................................................................................... 1

2.0 SUPPLEMENTAL CHARACTERIZATION DATA FOR THE DECOMMISSIONED TRANSFORMER 1, 2, AND 21 AREA .. 1

2.1 TRANSFORMER 1, 2, AND 21 AREA CHARACTERIZATION DATA ................................................................... 2

2.2 CONCEPTUAL SITE MODEL ............................................................................................................................ 3

2.3 MASSACHUSETTS CONTINGENCY PLAN CONSIDERATIONS .......................................................................... 4

3.0 PHASE II MODIFICATION TO THE RISK‐BASED CLEANUP PLAN .......................................................................... 4

4.0 REFERENCES ..................................................................................................................................................... 5

TABLES

Table 1A – Soil Sample Data (PCBS)

Table 1B – Soil Sample Data (VOCS)

Table 2A – Groundwater Sample Data (PCBS)

Table 2B – Groundwater Sample Data (VOCS)

FIGURES

Figure 1 ‐ Site Locus Map

Figure 2 ‐ Site Plan (Aerial)

Figure 3 – Transformers 1, 2, And 21 Area Sketch Plan

Figure 4A – Transformer 1, 2, and 21 Area Cross Section

Figure 4B – Proposed Remedial Plan

APPENDICES

Appendix A – Certification in Accordance with 40 CFR 761.61(A)(3)(I)(E)

Appendix B – Limitations

Appendix C – Exploration Logs

Appendix D – Laboratory Analytical Reports


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1.0 INTRODUCTION

This modification to the Plan presents supplemental data and additional evaluations by GZA regarding the proposed Phase II remedial approach for the decommissioned Transformer 1, 2, 21 Area under the TSCA (40 CFR 761.61 [c]) regulations. The signed certification for this Modification to the Phase II Plan is included in Appendix A. This report is subject to the Limitations contained in Appendix B.

The USEPA approved the Plan for the former Transformer 3, 4, 5, 6, and 11 areas in a letter dated March 23, 2018. On April 30, 2018, GZA submitted a modification to the Plan, which summarized the proposed Phase II approach for the Transformer 1, 2, and 21 Area. Subsequent discussions between USEPA, Mystic Station, and GZA regarding the April 2018 modification occurred in summer 2018. The result of those discussions was that the Phase I remedial approach for Transformer 1, 2, 21 Area was consistent with the approved Plan for the other transformer areas and could be implemented. However, based on the characterization data and the proposed Phase II remedial approach, the USEPA requested that additional data be collected and evaluated before approving the proposed Phase II remedial approach for Transformer 1, 2, and 21 Area.

A summary of Site background, history, and regulatory status were provided in the approved December 2017 Plan and updated in the April 2018 Modification. The April 2018 modification previously included a summary of environmental media characterization data (e.g. soil, groundwater, concrete) collected through October 2017, summarized human health and ecological risk evaluations, and presented risk‐based cleanup goals for the low occupancy area. This Modification presents the supplemental PCB characterization data for soil and groundwater samples collected in the Transformer 1, 2, and 21 Area in September 2018 and October 2018.

Consistent with the approved Plan and the April 2018 modification, this modification proposes that the remedial activities for the decommissioned Transformer 1, 2, and 21 Area proceed in two phases. Phase I includes aboveground remediation of concrete surfaces, concrete structure removal, and excavation of the top 2 feet of trap rock/soil. Phase I work for Transformer 1, 2, and 21 Area will occur concurrent with the Phase I for the Transformer 3, 4, 5, 6, and 11 areas in the late fall 2018. Phase II work will occur by 2022, after the building is demolished.

Based on the supplemental characterization data and GZA’s evaluations, the Phase II remedial approach under this modification is consistent with the approach presented in the April 2018 modification. The Phase II approach is to excavate and dispose of subsurface soil containing PCBs above the cleanup goal to a depth of 3 to 5 feet bgs for Transformer 1 and 2 area and to a depth of 10 feet bgs in the Transformer 21 area. PCBs above the cleanup goal that are located at depths greater than 10 feet bgs in the Transformer 21 area will be isolated beneath the cap. A low‐permeability cap will be constructed at depth, and the excavation will be backfilled to grade with clean imported fill material. An Activity and Use Limitation (AUL1) will be filed after Phase I, and updated following the completion of Phase II. The final AUL will prohibit removal of the low permeability cap and disturbance of soil beneath the cap.

2.0 SUPPLEMENTAL CHARACTERIZATION DATA FOR THE DECOMMISSIONED TRANSFORMER 1, 2, AND 21 AREA

The supplemental assessment and characterization of the Transformer 1, 2, and 21 Area included soil boring and soil sampling by vacuum excavation and hand auger; conventional hollow stem auger (HSA) soil boring/soil sampling via split

1 A deed restriction under the Massachusetts Contingency Plan [MCP; 310 CMR 40.0000].


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spoon sampler; and groundwater sampling from newly installed and existing monitoring wells. GZA personnel provided observation of the drilling subcontractor.

The soil characterization samples collected for PCB analysis were analyzed via USEPA Method 8082. The samples were extracted for analysis using manual Soxhlet extraction by USEPA Method 3540C. Deep soil samples collected downgradient of the Transformer 21 area were also analyzed for volatile organic compounds (VOCs) via EPA method 8260C. Groundwater samples were also analyzed for VOCs and PCBs. Exploration logs are included as Appendix C. Copies of the laboratory analytical reports are provided as Appendix D. Further discussion of the soil, concrete, and groundwater analytical results are provided in Section 2.1. The transformer area and sampling locations are depicted on Figures 2 through 4.

A total of seven soil samples were analyzed for PCBs from the two borings and three samples were analyzed for VOCs. Groundwater samples were collected from seven monitoring wells in October 2018 for analysis of PCBs and VOCs. Refer to Tables 1A and 1B for soil sample results; Table 2A and 2B for groundwater sample results. Aboveground concrete characterization data was previously presented in the April 2018 modification.

2.1 TRANSFORMER 1, 2, AND 21 AREA CHARACTERIZATION DATA

Soil Characterization

In September 2018, GZA personnel observed Technical Drilling Services (TDS) of Sterling, Massachusetts advance two borings (T21B9‐MW and T21B10‐MW) via vacuum excavation and HSA drilling techniques. The borings were advanced downgradient of the Transformer 21 area and were completed as PVC groundwater monitoring wells. When sufficient volume of soil was present, soil samples were collected via hand auger in advance of the vacuum excavator; the exploration locations were cleared via vacuum excavation to check for potential obstructions and utilities. Following vacuum excavation, soil samples were collected continuously via the spilt spoon sampler to depths of approximately 22 feet bgs. The exploration locations are shown on Figure 3.

GZA personnel logged soil descriptions and screened soil samples with a photoionization detector (PID) for the presence of VOCs. Soil descriptions and field screening data are summarized on the exploration logs included as Appendix C. As noted on the exploration logs and the cross‐section Figure 4A, the soils recovered from the split spoon samples in downgradient borings consisted of a sandy gravel fill layer ranging in thickness from 9 to 14 feet bgs, underlain by a silty clay material with interbedded lenses of sand and gravel ranging in thickness from 9 to 16 feet bgs, which was underlain by a silty clay from 16 to 22 feet bgs. GZA noted a faint petroleum‐like and/or hydrogen sulfide‐like odor from some of the soil samples from T21B9‐MW and T21B10‐MW.

GZA also collected select soil samples that exhibited olfactory or PID evidence of VOCs for laboratory analysis of VOCs via EPA method 8260C. As shown on Table 1A, analytical results from the soil samples collected from borings T21B9 and T21B10 located in the roadway south/downgradient of the former Transformer 21 area showed PCBs were either not detected above the laboratory detection limits, or were detected at concentrations below the cleanup goal (i.e. less than 25 mg/kg). Except for low concentration of VOCs detected in soil from downgradient boring T21B5‐S7B (10‐11 feet bgs), VOCs were not detected above the laboratory detection limit in soil samples analyzed from the sand and gravel fill, the silty clay with sand and gravel lenses, or the deeper silty clay layer in the downgradient borings (i.e. T21B6, T21B7, T21B9 and T21B10) (See Table 1B and Figure 4A). The low‐level concentrations or non‐detection of VOCs in the downgradient soil samples compared to soil samples analyzed within the Transformer 21 source area (i.e. T21B2‐S3; 6‐8 feet bgs, T21B2‐S4A; 8‐9 feet bgs, and T21B8C S‐3; 17‐19 feet bgs), which did have elevated VOC detections, indicates that the historical release of dielectric fluid containing PCBs and chlorobenzenes is sorbed to the silty clay in the Transformer 21 area source area footprint and is not migrating to downgradient locations toward the river.


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Groundwater Characterization

Following the installation of wells T21B9‐MW and T21B10‐MW in September 2018, GZA conducted a groundwater sampling round at the Transformer 1, 2, and 21 Area in October 2018. The groundwater samples were collected from seven wells and analyzed for PCBs and VOCs. As shown on Table 2A, PCBs were not detected in the wells.2 As shown on Table 2B, VOCs were not detected above the laboratory detection limits in wells T2‐MW, T21B6‐MW, and T21B7‐MW, which was generally consistent with prior sampling data. For wells T21B5‐MW and T21B8C‐MW, VOCs were detected at varying concentrations, but showed lower concentrations compared to the 2017 sampling round. Downgradient wells T21B9‐MW and T21B10‐MW, which were screened at a deeper interval (15 – 20 feet bgs) than the other wells (T21B5‐MW, T21B6‐MW, and T21B7‐MW; screened 5 – 15 feet bgs) showed a low concentrations of VOCs. The wells with deeper screen intervals were installed downgradient to evaluate potential migration of dissolved phase constituents from the Transformer 21 area where higher concentrations in soil were noted at a depth of approximately 17 to 19 feet bgs.

As shown on Tables 2A and 2B, groundwater concentrations in the Transformer 21 area and the downgradient wells are significantly below the applicable MassDEP GW‐3 standards for VOCs and PCBs. The GW‐3 standards are used under the MCP to evaluate groundwater concentrations that may migrate to a nearby surface water. Also shown on Table 2B are the MassDEP GW‐2 standards for comparison purposes only; the GW‐2 standards in the MCP are used to evaluate the potential for vapor instruction into nearby buildings. The GW‐2 standard is not applicable to the downgradient monitoring wells since they are greater than 30 feet from the building. Further, GW‐2 does not apply under the current use scenario for well T21B8C‐MW since the Mystic Unit 1 building is not occupied and has been vacant for many years. Overall, the groundwater data show that migration of dissolved phase contaminants from the Transformer 21 source area is not significant.

2.2 CONCEPTUAL SITE MODEL

The Conceptual Site Model (CSM) for the Transformer 1, 2, and 21 Area is based on historical documentation, discussions with Mystic Station personnel, field observations and analytical data. In addition to the documented release of dielectric fluid from Transformer 2 in 1984, the characterization data suggest that other release(s) of fluids containing PCBs likely occurred either through incremental drips or accidental spills. Although the 1984 release was reportedly remediated during emergency response activities at that time, the recent characterization data suggest that those cleanup activities were not successful at achieving cleanup goals for PCBs under TSCA. The data indicated that the type of MODF released was a mixture of PCBs and multiple isomers of chlorobenzenes, consistent with historical information documenting the use of Chlorextal3 in these transformers. The CSM for this release area is that the chlorobenzene solvent, which has a greater density than water, carried PCBs through the approximately 20‐foot thick layer of granular fill down to the clay layer where the contaminant mixture pooled on and partially adsorbed onto the clay. As shown on the cross‐section Figure 4A, the silty clay layer that is downgradient from the source area of higher concentrations of PCBs and VOCs does not exhibit concentrations of these contaminants in soil or groundwater at levels above risk‐based cleanup goals or applicable MCP risk‐based standards. Additionally, soil samples analyzed adjacent to the steel sheet pile wall from boring T21B10 at a depth just above and just below the apparent sediment layer in the Mystic River did not exhibit PCBs or VOCs above the laboratory detection limit. These factors indicate that further migration of contaminants from the Transformer 21 source area did not occur. The data

2 The groundwater sample collected from well T21B8C‐MW in October 2017 was field filtered prior to preservation in the laboratory container for PCB analysis. The September 2017 groundwater samples were not field‐filtered to remove suspended solids. The unfiltered samples identified other Arochlors at low concentrations. The October 2018 groundwater samples were field filtered prior to preservation for PCB analysis. 3Based on GZA’s research, Chlorextal is a brand name of a mixture of PCB’s (primarily Arochlor 1260) and chlorobenzenes.


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indicate that there isn’t a significant dissolved‐phase plume of chlorobenzenes or PCBs migrating from Transformer 21 source area.

2.3 MASSACHUSETTS CONTINGENCY PLAN CONSIDERATIONS

Regarding the MCP aspects of the Site, the supplemental characterization data collected in September – October 2018 confirm GZA’s prior conclusions regarding PCBs and VOCs in soil and groundwater. It provides additional lines of evidence to address the MCP requirements to define the nature and extent of oil and/or hazardous material (OHM) from the Transformer 1, 2, and 21 Area and demonstrate that a condition of No Substantial Hazard (NSH4) exists for the Transformer 1, 2, and 21 Area under current Site use conditions. Per the MCP5, the need to evaluate potential concentrations of OHM in sediment and surface water is not necessary. This rationale is supported by the conditions and characteristics of the Disposal Site summarized in the CSM Section 2.2.

GZA plans to submit a supplemental Phase II and revised Temporary Solution Statement (TSS) to the MassDEP under the MCP in December 2018.

3.0 PHASE II MODIFICATION TO THE RISK‐BASED CLEANUP PLAN

Approval is being requested in this Phase II modification to the Plan to for the Transformer 1, 2, and 21 Area as part of the PCB remediation along with the Transformer 3, 4, 5, 6, and 11 areas.

Following the collection of supplemental data and evaluation by GZA, we reaffirm our approach described in the April 2018 modification request. That approach was for the Phase II subsurface remediation of the Transformer 1, 2, 21 Area be completed as a combination of soil excavation for Transformer 1, 2, and 21 area and installation of a low permeability cap for the Transformer 21 area (see Figure 5B).

As summarized in Section 2.0, the prior 2017 data and supplemental 2018 data show that contaminants are not migrating from the Transformer 1, 2, and 21 source area to downgradient locations or the Mystic River at significant concentrations. As shown in the cross‐section Figure 4B, significant concentrations of PCBs and VOCs are located within the footprint of the Transformer 21 area subsurface at depth due to a disturbed fill layer that extends to approximately 20 feet bgs. Based on downgradient explorations and data, these more elevated concentrations appear to be isolated within the Transformer 21 source area. Since downgradient soil samples show PCBs, when detected above the laboratory detection limit, are already below the cleanup goal (25 mg/kg), remediation of soils containing PCBs beyond the Transformer 1, 2, and 21 area foot print are not required. Further, based on downgradient concentrations in soil and groundwater, it is GZA’s opinion that additional investigation is not warranted to develop the Phase II remedial approach.

In the April 2018 modification, GZA provided a summary of Phase II remedial alternatives, feasibility, and evaluations of approximate costs to implement the two options. These new data do not alter those prior conclusions. The most feasible and cost‐effective approach for Transformer 21 area is still to excavate soil containing PCBs to approximately 10 feet bgs

4 Demonstration of a condition of NSH is a requirement under the MCP for Temporary Solutions. 5 Specifically, sections 310 CMR 40.0904(2)(c) and 310 CMR 40.0193(1), which in summary states: “Concentrations of oil and hazardous material in the sediment and/or surface water must be measured in any of the following circumstances to determine whether such material at or from the site has been or is being transported in a manner that would result in surface water or sediment concentrations of potential ecological significance, unless the need for such measurements is obviated by a technical justification consistent with 310 CMR 40.0193:” and “A Licensed Site Professional may provide technical justification for forgoing any specific activity required by 310 CMR 40.0000, related to Phase II Comprehensive Site Investigation Activities performed in accordance with 310 CMR 40.0830, if in his or her professional judgment any particular requirement is unnecessary or inappropriate based upon the conditions and characteristics of a disposal site.”


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and construct a low permeability cap at 9‐10 feet to isolate soils containing PCBs below 10 feet bgs. We did not complete an update of the cost analysis for Phase II.

4.0 REFERENCES

Commonwealth of Massachusetts. June 20, 2014. Massachusetts Contingency Plan. 310 CMR 40.0000. Massachusetts Department of Environmental Protection (MassDEP), Bureau of Waste Site Cleanup.

GZA, December 7, 2011. Phase I Initial Site Investigation and Tier Classification, Exelon Mystic Station Former Transformer Areas 3, 5, and 6, Exelon Mystic Power Station, Charlestown, Massachusetts. RTN 3‐29680. Prepared by GZA of Norwood, Massachusetts. December 7, 2011.

GZA, December 6, 2013. Phase II Comprehensive Site Assessment, Phase III Remedial Action Plan, and Class C‐1 Response Action Outcome, Exelon Mystic Station Former Transformer Areas 3, 5, and 6, Exelon Mystic Station, Charlestown, Massachusetts. RTN 3‐29680. Prepared by GZA of Norwood, Massachusetts. December 6, 2013.

GZA, November 4, 2016. Supplemental Phase II Comprehensive Site Assessment (CSA), Revised Phase III Remedial Action Plan (RAP) and Revised Temporary Solution Statement (TSS), Exelon Mystic Station Former Transformer Areas 3, 4, 5, 6, and 11 Exelon Mystic Station, Charlestown, Massachusetts. RTN 3‐29680. Prepared by GZA of Norwood, Massachusetts.

GZA, December 7, 2017. Risk‐Based Cleanup Plan – Transformers 3, 4, 5, 6, and 11 areas, Exelon Mystic Station, Charlestown, Massachusetts. Prepared by GZA of Norwood, Massachusetts.

GZA, April 30, 2018. Risk‐Based Cleanup Plan Modification – Transformers 1, 2, and 21 Area, Exelon Mystic Station, Charlestown, Massachusetts. Prepared by GZA of Norwood, Massachusetts.

J:\15,000‐16,999\15442.1F6\15442‐76.JRC\2017 Risk Based Clean Up Plan\Trans 1, 2, & 21 Modification\Mystic Station ‐ Risk Based Cleanup Plan ‐ Phase II Modification Supplement (11.20.2018).docx

Tables

Table 1A

Soil Samples

Exelon - Mystic Station

173 Alford Street, Charlestown, MA

Page 1 of 2

11/1/2018

Sample ID T1B1-S1 T1B1-S2 T1B2-S1 T1N T1S T1E T2B1-S1 T2B2-S1 T2B4-S1 T2B5-S1 T2N T2S T2ELaboratory ID 1707662-01 1707662-02 1707662-03 1709292-01 1709292-02 1709292-03 1707663-01 1707662-04 1707662-05 1707662-06 1709292-04 1709292-05 1709292-06Sample Date 7/28/2017 7/28/2017 7/28/2017 9/13/2017 9/13/2017 9/13/2017 7/28/2017 7/28/2017 7/28/2017 7/28/2017 9/13/2017 9/13/2017 9/13/2017

Sample Depth (ft) 2-4' 4-5' 2-4' 0-2' 0-2' 0-2' 2-4' 2-4' 2-4' 2-4' 0-2' 0-2' 0-2'

PCBsAroclor 1016 <2.8 <3.1 <0.06 <0.05 <0.05 <53.6 <5.7 <5.7 <3.0 <5.6 <10.3 <0.05 <0.05Aroclor 1221 <2.8 <3.1 <0.06 <0.05 <0.05 <53.6 <5.7 <5.7 <3.0 <5.6 <10.3 <0.05 <0.05Aroclor 1232 <2.8 <3.1 <0.06 <0.05 <0.05 <53.6 <5.7 <5.7 <3.0 <5.6 <10.3 <0.05 <0.05Aroclor 1242 <2.8 <3.1 <0.06 <0.05 <0.05 <53.6 <5.7 <5.7 <3.0 <5.6 <10.3 <0.05 <0.05Aroclor 1248 <2.8 <3.1 <0.06 <0.05 <0.05 <53.6 <5.7 <5.7 <3.0 <5.6 <10.3 <0.05 <0.05Aroclor 1254 <2.8 <3.1 <0.06 <0.05 <0.05 <53.6 <5.7 <5.7 <3.0 <5.6 <10.3 <0.05 <0.05Aroclor 1260 20.0 28.1 0.07 2.9 1.8 192 43.8 45.8 23.6 39.2 83.8 0.5 0.7Aroclor 1262 <2.8 <3.1 <0.06 <0.05 <0.05 <53.6 <5.7 <5.7 <3.0 <5.6 <10.3 <0.05 <0.05Aroclor 1268 <2.8 <3.1 <0.06 <0.05 <0.05 <53.6 <5.7 <5.7 <3.0 <5.6 <10.3 <0.05 <0.05

Notes:1. Concentrations presented in parts per million or milligrams per kilogram (mg/kg). 2. < X = result was below the laboratory detection limit.

3. Due to elevated detections of Arochlor 1260 in certain samples, the laboratory detection limits for other Arochlors were raised as a function of

required sample dilutions needed for Arochlor 1260 to be within the instrument calibration range.

Transformer #1 Vicinity Transformer #2 Vicinity

Transformer #1, #2, and #21 Area

\\GZANOR\Jobs\15,000-16,999\15442.1F6\15442-76.JRC\2017 Risk Based Clean Up Plan\Tables - Draft PDFs and Working Excel Versions\Soil\Table 1 - Soil Samples.xlsx

Table 1A

Soil Samples

Exelon - Mystic Station


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Sample IDLaboratory IDSample Date

Sample Depth (ft)

PCBsAroclor 1016Aroclor 1221Aroclor 1232Aroclor 1242Aroclor 1248Aroclor 1254Aroclor 1260Aroclor 1262Aroclor 1268

T21B1-S1 T21B2-S1 T21B2-S2 T21B2-S3 T21B2-S4A T21B2-S4B T21B2-S5A T21B2-S5B T21B2-S6 T21B3-S1 T21B3-S3 T21B3-S4 T21B3-S5 T21B3-S6 T21B4-S1 T21B5 S-4 T21B5 S-7A T21B5 S-7B T21B6 S-2 T21B6 S-3 T21B6 S-4 T21B6 S-7 T21B7 S-1 T21B7 S-2A T21B7 S-3 T21B8C S-2 T21B8C S-3 T21N T21S T21B9 S-2 T21B9 S-3 T21B9 S-9 T21B10 S-2 T21B10 S-3 T21B10 S-10 T21B10 S-111707662-07 1707663-02 1707663-03 1707662-17 1707662-08 1707662-09 1707662-10 1707662-11 1707662-12 1707663-04 1707663-05 1707662-13 1707662-14 1707662-15 1707662-16 1709269-01 1709269-13 1709269-06 1709269-02 1709269-03 1709269-08 1709269-07 1709269-04 1709269-05 1709269-09 1709269-11 1709269-12 1709292-07 1709292-08 1809599-01 180599-02 1809783-01 180599-03 180599-04 1809783-02 1809783-037/28/2017 7/28/2017 7/28/2017 7/28/2017 7/28/2017 7/28/2017 7/28/2017 7/28/2017 7/28/2017 7/28/2017 7/28/2017 7/28/2017 7/28/2017 7/28/2017 7/28/2017 9/7/2017 9/8/2017 9/8/2017 9/7/2017 9/7/2017 9/8/2017 9/8/2017 9/7/2017 9/8/2017 9/8/2017 9/8/2017 9/8/2017 9/13/2017 9/13/2017 9/21/2018 9/21/2018 9/27/2018 9/21/2018 9/21/2018 9/27/2018 9/27/2018

2-4' 2-4' 4-6' 6-8' 8-9' 9-10' 10-11.5' 11.5-12' 12-14' 2-4' 6-8' 8-10' 10-12' 12-14' 2-4' 3-4' 9-10' 10-11' 1-2' 2-3' 7-9' 13-15' 0-1' 7-8' 9-11' 17-19' 20-22' 0-2' 0-2' 3-4' 5-6' 16-18' 3-4' 5-6' 18-20' 20-22'

<586 <10.7 <6.2 <321 <3,110 <34.3 <67.2 <32.7 <30.2 <2.9 <1.3 <12.7 <3.1 <343 <301 <0.06 <0.06 <0.06 <0.05 <0.06 <0.06 <0.06 <0.05 <0.06 <0.06 <578 <8.8 <0.05 <0.05 <2.8 <0.06 <0.07 <1.1 <0.05 <0.09 <0.08<586 <10.7 <6.2 <321 <3,110 <34.3 <67.2 <32.7 <30.2 <2.9 <1.3 <12.7 <3.1 <343 <301 <0.06 <0.06 <0.06 <0.05 <0.06 <0.06 <0.06 <0.05 <0.06 <0.06 <578 <8.8 <0.05 <0.05 <2.8 <0.06 <0.07 <1.1 <0.05 <0.09 <0.08<586 <10.7 <6.2 <321 <3,110 <34.3 <67.2 <32.7 <30.2 <2.9 <1.3 <12.7 <3.1 <343 <301 <0.06 <0.06 <0.06 <0.05 <0.06 <0.06 <0.06 <0.05 <0.06 <0.06 <578 <8.8 <0.05 <0.05 <2.8 <0.06 <0.07 <1.1 <0.05 <0.09 <0.08<586 <10.7 <6.2 <321 <3,110 <34.3 <67.2 <32.7 <30.2 <2.9 <1.3 <12.7 <3.1 <343 <301 <0.06 <0.06 <0.06 <0.05 <0.06 <0.06 <0.06 <0.05 <0.06 <0.06 <578 <8.8 <0.05 <0.05 <2.8 <0.06 <0.07 <1.1 <0.05 <0.09 <0.08<586 <10.7 <6.2 <321 <3,110 <34.3 <67.2 <32.7 <30.2 <2.9 <1.3 <12.7 <3.1 <343 <301 <0.06 <0.06 <0.06 <0.05 <0.06 <0.06 <0.06 <0.05 <0.06 <0.06 <578 <8.8 <0.05 <0.05 <2.8 <0.06 <0.07 <1.1 <0.05 <0.09 <0.08<586 <10.7 <6.2 <321 <3,110 <34.3 <67.2 <32.7 <30.2 <2.9 <1.3 <12.7 <3.1 <343 <301 <0.06 <0.06 <0.06 <0.05 <0.06 <0.06 <0.06 <0.05 <0.06 <0.06 <578 <8.8 <0.05 <0.05 <2.8 <0.06 <0.07 <1.1 <0.05 <0.09 <0.08

4,720 128 104 1,540 17,000 172 563 272 147 20.6 6.9 68.5 19.9 1,590 1,490 4.6 1.80 0.09 5.1 8.1 2.2 0.09 1.3 1.0 <0.06 6,120 71.4 2.8 2.7 17.6 4.9 <0.07 6.3 4.6 <0.09 <0.08<586 <10.7 <6.2 <321 <3,110 <34.3 <67.2 <32.7 <30.2 <2.9 <1.3 <12.7 <3.1 <343 <301 <0.06 <0.06 <0.06 <0.05 <0.06 <0.06 <0.06 <0.05 <0.06 <0.06 <578 <8.8 <0.05 <0.05 <2.8 <0.06 <0.07 <1.1 <0.05 <0.09 <0.08<586 <10.7 <6.2 <321 <3,110 <34.3 <67.2 <32.7 <30.2 <2.9 <1.3 <12.7 <3.1 <343 <301 <0.06 <0.06 <0.06 <0.05 <0.06 <0.06 <0.06 <0.05 <0.06 <0.06 <578 <8.8 <0.05 <0.05 <2.8 <0.06 <0.07 <1.1 <0.05 <0.09 <0.08

Notes:1. Concentrations presented in parts per million or milligrams per kilogram (mg/kg). 2. < X = result was below the laboratory detection limit.

3. Due to elevated detections of Arochlor 1260 in certain samples, the laboratory detection limits for other Arochlors were raised as a function of

required sample dilutions needed for Arochlor 1260 to be within the instrument calibration range.


Transformer #21 Vicinity

\\GZANOR\Jobs\15,000-16,999\15442.1F6\15442-76.JRC\2017 Risk Based Clean Up Plan\Tables - Draft PDFs and Working Excel Versions\Soil\Table 1 - Soil Samples.xlsx

Table 1B

Soil Samples

Exelon ‐ Mystic Station


Page 1 of 1

11/1/2018

Trans. #1

VicinitySample ID T1B2‐S1 T21B2‐S3 T21B2‐S4A T21B5 S‐6 T21B5 S‐7B T21B6 S‐4 T21B6 S‐7 T21B7 S‐2A T21B7 S‐3 T21B8C S‐2 T21B8C S‐3 T21B9 S‐9 T21B10 S‐10 T21B10 S‐11

Laboratory ID 1707662‐03 1707662‐17 1707662‐08 1709269‐10 1709269‐06 1709269‐08 1709269‐07 1709269‐05 1709269‐09 1709269‐11 1709269‐12 1809783‐01 1809783‐02 1809783‐03

Sample Date 7/28/2017 7/28/2017 7/28/2017 9/8/2017 9/8/2017 9/8/2017 9/8/2017 9/8/2017 9/8/2017 9/8/2017 9/8/2017 9/27/2018 9/27/2018 9/27/2018

Sample Depth (ft) 2‐4' 6‐8' 8‐9' 7‐9' 10‐11' 7‐9' 13‐15' 7‐8' 9‐11' 17‐19' 20‐22' 16‐18' 18‐20' 20‐22'

VOCs mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg

1,2,3‐Trichlorobenzene <0.0041 33.7 1,400 <0.450 <0.336 <0.361 <0.418 <0.395 <0.413 208 <0.894 <0.447 <0.626 <0.513

1,2,4‐Trichlorobenzene <0.0041 155 6,000 <0.450 <0.336 <0.361 <0.418 <0.395 <0.413 1,010 <0.894 <0.447 <0.626 <0.513

1,2‐Dichlorobenzene <0.0041 <0.436 8.47 <0.450 <0.336 <0.361 <0.418 <0.395 <0.413 3.55 <0.894 <0.447 <0.626 <0.513

1,3‐Dichlorobenzene <0.0041 10.1 161 <0.450 0.534 <0.361 <0.418 <0.395 <0.413 17.7 <0.894 <0.447 <0.626 <0.513

1,4‐Dichlorobenzene <0.0041 1.39 59.4 <0.450 2.47 <0.361 <0.418 <0.395 <0.413 18.6 <0.894 <0.447 <0.626 <0.513

Chlorobenzene <0.0041 <0.436 <0.540 <0.450 <0.336 <0.361 <0.418 <0.395 <0.413 1.57 <0.894 <0.447 <0.626 <0.513

Notes:

1. Concentrations presented in parts per million or milligrams per kilogram (mg/kg).

2. < X = result was below the laboratory detection limit.



J:\15,000‐16,999\15442.1F6\15442‐76.JRC\2017 Risk Based Clean Up Plan\Tables ‐ Draft PDFs and Working Excel Versions\Soil\Table 1 ‐ Soil Samples

Table 2A

Groundwater Samples



Page 1 of 1

11/9/2018

Sample ID T21B9‐MW T21B10‐MW

Laboratory ID 1709472‐05 1810370‐07 1709472‐01 1810370‐01 1709472‐02 1810370‐02 1709472‐03 1810370‐03 1709472‐04 1710616‐01 1810370‐04 1810370‐05 1810370‐06

Sample Date 9/14/2017 10/10/2018 9/14/2017 10/10/2018 9/14/2017 10/10/2018 9/14/2017 10/10/2018 9/14/2017 10/24/2017 10/10/2018 10/10/2018 10/10/2018

PCBs RCGW‐2 GW‐3 µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L

Aroclor 1016 5 10 <0.09 <0.09 <0.09 <0.09 <0.09 <0.10 <0.09 <0.09 <0.09 <0.09 <0.09 <0.09 <0.10

Aroclor 1221 5 10 <0.09 <0.09 <0.09 <0.09 <0.09 <0.10 <0.09 <0.09 <0.09 <0.09 <0.09 <0.09 <0.10

Aroclor 1232 5 10 <0.09 <0.09 <0.09 <0.09 <0.09 <0.10 <0.09 <0.09 <0.09 <0.09 <0.09 <0.09 <0.10

Aroclor 1242 5 10 <0.09 <0.09 0.270 <0.09 <0.09 <0.10 <0.09 <0.09 0.470 <0.09 <0.09 <0.09 <0.10

Aroclor 1248 5 10 <0.09 <0.09 <0.09 <0.09 <0.09 <0.10 <0.09 <0.09 <0.09 <0.09 <0.09 <0.09 <0.10

Aroclor 1254 5 10 <0.09 <0.09 0.170 <0.09 0.410 <0.10 <0.09 <0.09 1.85 <0.09 <0.09 <0.09 <0.10

Aroclor 1260 5 10 <0.09 <0.09 <0.09 <0.09 <0.09 <0.10 <0.09 <0.09 0.930 <0.09 <0.09 <0.09 <0.10

Aroclor 1262 5 10 <0.09 <0.09 <0.09 <0.09 <0.09 <0.10 <0.09 <0.09 <0.09 <0.09 <0.09 <0.09 <0.10

Aroclor 1268 5 10 <0.09 <0.09 <0.09 <0.09 <0.09 <0.10 <0.09 <0.09 <0.09 <0.09 <0.09 <0.09 <0.10

Notes:

1. Concentrations presented in parts per billion or micrograms per liter (µg/L).


5. Standards excerpted from the MCP ‐ 310 CMR 40.00974(2) Table 1 and 310 CMR 40.1600 Table 1.

3. The sample collected from T21B8C‐MW on 9/14/17 was not field filtered, whereas the sample collected on 10/24/17 was field filtered

4. Samples collected on 10/10/2018 were field filtered



T21B8C‐MW3T21B7‐MWT21B6‐MW


T2‐MW T21B5‐MW

J:\15,000‐16,999\15442.1F6\15442‐76.JRC\2017 Risk Based Clean Up Plan\Tables ‐ Draft PDFs and Working Excel Versions\Groundwater\Table 3 ‐ Groundwater Samples

Table 2B

Groundwater Samples



Page 1 of 1

11/9/2018

Sample ID T21B9‐MW T21B10‐MW

Laboratory ID 1709472‐05 1810370‐07 1709472‐01 1810370‐01 1709472‐02 1810370‐02 1709472‐03 1810370‐03 1709472‐04 1710616‐01 1810370‐04 1810370‐05 1810370‐06

Sample Date 9/14/2017 10/10/2018 9/14/2017 10/10/2018 9/14/2017 10/10/2018 9/14/2017 10/10/2018 9/14/2017 10/24/2017 10/10/2018 10/10/2018 10/10/2018

VOCs RCGW‐2 GW‐2 GW‐3 µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L

1,2,3‐Trichlorobenzene NS NS NS <1.0 <1.0 3.5 <1.0 <1.0 <1.0 <1.0 <1.0 123 147 12.4 <1.0 <1.0

1,2,4‐Trichlorobenzene 200 200 50,000 <1.0 <1.0 13.6 <1.0 <1.0 <1.0 <1.0 <1.0 493 475 32.6 1.2 <1.0

1,2‐Dichlorobenzene 2,000 8,000 2,000 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 8.8 4.2 3.2 <1.0 <1.0

1,3‐Dichlorobenzene 6,000 6,000 50,000 <1.0 <1.0 23.4 3.2 <1.0 <1.0 <1.0 <1.0 60.9 45.7 32.7 6.0 1.2

1,4‐Dichlorobenzene 60 60 80,000 <1.0 <1.0 119 32.9 <1.0 <1.0 2.3 <1.0 174 231 154 69.1 4.4

Chlorobenzene 200 200 1,000 <1.0 <1.0 5.4 <1.0 <1.0 <1.0 <1.0 <1.0 6.3 7.4 17.5 1.3 <1.0

Notes:

1. Concentrations presented in parts per billion or micrograms per liter (µg/L).


3. Standards excerpted from the MCP ‐ 310 CMR 40.00974(2) Table 1 and 310 CMR 40.1600 Table 1.

T21B8C‐MW


Transformer #21 VicinityTransformer #2 Vicinity

T2‐MW T21B5‐MW T21B6‐MW T21B7‐MW

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NEUTRAL RESISTOR

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T21B8C-MWT21B1 T21B6-MW T21B10-MWT21B3T21B2

??

4,720

104

128

1,540

17,000

172

563

272

147

200.19

7,628.87

6,1201,259.42

71.4BDL

20.6

6.9

5.1

8.1

2.2BDL

0.09

6.3

4.6

BDLBDL

BDLBDL

1,590

19.9

68.5

BDL

SHEET PILE WALL (DEPTH UNKNOWN)

APPROXIMATE LOCATION OF 8" DIAMETER

FIRE SUPPRESSION WATER SERVICE LINE

SOIL BORING SYMBOL AND I.D.

AROCLOR 1260 CONCENTRATION (mg/kg)

BOTTOM OF BORING

LITHOLOGY KEY

SAND & GRAVEL

SILTY CLAY

F-M SAND

CLAY WITH PEAT FIBERS

NOTES:

1. MYSTIC UNITS 1-6 BUILDING FOUNDATION IS ASSUMED TO BE ON WOODEN PILES.

2. ELEVATIONS SHOWN ARE RELATIVE TO THE EXISTING GROUND SURFACE.

3. THE SOIL SAMPLES WERE COLLECTED BY GZA PERSONNEL ON APRIL 13, 2017,

JUNE 7, 2017, JULY 28, 2017 AND SEPTEMBER 21 & 27, 2018.

4. THE SOIL BORINGS AND MONITORING WELLS WERE PERFORMED BY TECHNICAL

DRILLING SERVICES, INC. ON JULY 28, 2017, SEPTEMBER 7-8, 2017 AND

SEPTEMBER 21 & 27, 2018 AND WERE OBSERVED BY GZA PERSONNEL.

5. THE LOCATIONS SOIL BORINGS AND MONITORING WELLS WERE APPROXIMATELY

DETERMINED BY LINE OF SIGHT AND TAPE MEASUREMENTS FROM EXISTING

TOPOGRAPHIC AND MAN-MADE FEATURES. THIS DATA SHOULD BE CONSIDERED

ACCURATE ONLY TO THE DEGREE IMPLIED BY THE METHOD USED.

SILTY CLAY WITH INTERBEDDED

SAND & GRAVEL LENSES

TRAP ROCK & GRAVEL

SILT




www.gza.com


DESIGNED BY:

PROJ MGR:

DRAWN BY:


SCALE:

CONSTELLATION

MYSTIC POWER, LLC

JRC

JRC

GWM

ADP/EMD

GWM

AS NOTED 4A

11-09-2018 01.0015442.76

FIGURE

MYSTIC STATION - TRANSFORMERS 1, 2 & 21 AREA

173 ALFORD STREET


PROFILE A-A'

0

0

2' 4' 8' 12'

VERTICAL SCALE IN FEET

2' 4' 8' 12'

HORIZONTAL SCALE IN FEET

104

128

1,540

17,000

172

563

272

147

200.19

7,628.87

AROCLOR 1260 CONCENTRATION (>100 mg/kg)

AROCLOR 1260 CONCENTRATION (25 - 100 mg/kg)

AROCLOR 1260 CONCENTRATION (<25 mg/kg)

T21B1

TOTAL VOLATILE ORGANIC COMPOUNDS (VOCs) AS A

SUMMATION OF CHLOROBENZENE ISOMERS (mg/kg)

BDL - RESULT WAS BELOW THE LABORATORY DETECTION LIMIT

T21B6-MW

WATER TABLE ELEVATION

TOTAL (VOCs) CONCENTRATION (mg/kg)

PROFILE LEGEND SOIL SAMPLE RESULTS KEY

MONITORING WELL SYMBOL AND I.D.

w

" L 0 C 0

" • C

.2 w

E Q_

"' "' ;-;

ro 0 N

o,' 0

L

w .0

E • > 0 z

~ "' . ' I

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C: I

<{ I

c":, en

' " N > w "' I f-u w (/)

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~ w E

-2 ' C

e f---1 <D

" I N sj-sj-

"' / 0 <{ u /

' E " en

C: / u O' --, <D

" I N sj-sj-

"' / <D u_

N sj-sj-

"' /

"' m "' "' I 0 0 o_

"' _/ ,

I <{ N (')

u E ~

-8 C w E C

e ·s C w 0 w

(')

<{ N (')

ro 0 N

©

C 4 .. ..J r·: (J

c, -:,

. ' q

' . . q

/ ' q

' _J

/

.,

_J

' /

T

q

'

C! ., /

' /

q

'

_J q

'

' /

' /

' ' ' _J •

., /

' q

{

_. -• __ ,

011---

4 0 ~-~ 0

<l' / I/. -r ,' ) ., .r

I'.) '· ), '-'' L' . ,:\ ;, c·, -- c> '· I~ I I I I I I I I I-I I

\_

\ ~·. I ., . \' (.

\ \ :, C

I\ I \'-I -.... I I I I -

I

I

~

C (, .. :__) . ' -~ c•·:-~<) c(' _-_-____sz

<'ICO '. . ·;•c

- - - - ----¼;• -_-_-_-_----=-:-;:

""-·-( ~

--= =- - - - -

.. .. J ., " .. / q ..J <l ..J ..," ,\• ,:, ; ., ;.,..J ,._J°<l 0.,----------~------------j-------------------t------------------t------,.

-- ----

..

. J , . . . ,

UNLESS SPECIFICALLY STATED BY WRITTEN AGREEMENT, THIS DRAWING IS THE SOLE PROPERTY OF GZA GEOENVIRONMENTAL, INC. (GZA). THE INFORMATION SHOWN ON THE DRAWING IS SOLELY FOR USE BY GZA'S CLIENT OR THE CLIENT'S DESIGNATED REPRESENTATIVE FOR THE SPECIFIC PROJECT AND LOCATION IDENTIFIED ON THE DRAWING. THE DRAWING SHALL NOT BE TRANSFERRED, REUSED, COPIED, OR ALTERED IN ANY MANNER FOR USE AT ANY OTHER LOCATION OR FOR ANY OTHER PURPOSE WITHOUT THE PRIOR WRITTEN CONSENT OF GZA ANY TRANSFER, REUSE, OR MODIFICATION TO THE DRAWING BY THE CLIENT OR OTHERS, WITHOUT THE PRIOR WRITTEN EXPRESS CONSENT OF GZA, WILL BE AT THE USER'S SOLE RISK AND WITHOUT ANY RISK OR LIABILITY TO GZA.

Appendix A – Certification in Accordance with 40 CFR 761.61(A)(3)(I)(E)

CERTIFCATION IN ACCORDANCE WITH 40 CFR 761.61(a)(3)(i)(E)CERTIFICATION IN ACCORDANCE WITH 40 CFR 761.61(a)(3)(E)

All sampling plans, sample collection procedures, sample preparation procedures, extraction procedures, and instrumental/chemical analysis procedures used to assess or characterize the PCB contamination at the cleanup site that is the subject of this document are on file at the following location:

Mr. Todd Cutler

GZA GeoEnvironmental, Inc. 249 Vanderbilt Avenue Norwood, Massachusetts 02062

Contact: Gregg W. McBride, LSP Phone: (781) 278-3828

Assistant Secretary Constellation Mystic Power, LLC 173 Alford Street, Charlestown todd.cutler@exe loncorp .com Tel.: 617-293-8366

Senior Principal GZA GeoEnvironmental, Inc. [email protected]

jason.chrzanowski

Text Box

Appendix B – Limitations

GEOHYDROLOGICAL LIMITATIONS 01.0015442.76

Page | 1 April 2012

active by Design

USE OF REPORT

1. GZA GeoEnvironmental, Inc. (GZA) prepared this report on behalf of, and for the exclusive use of our Client for the stated purpose(s) and location(s) identified in the Proposal for Services and/or Report. Use of this report, in whole or in part, at other locations, or for other purposes, may lead to inappropriate conclusions; and we do not accept any responsibility for the consequences of such use(s). Further, reliance by any party not expressly identified in the agreement, for any use, without our prior written permission, shall be at that party’s sole risk, and without any liability to GZA.

STANDARD OF CARE

2. GZA’s findings and conclusions are based on the work conducted as part of the Scope of Services set forth in the Proposal for Services and/or Report and reflect our professional judgment. These findings and conclusions must be considered not as scientific or engineering certainties, but rather as our professional opinions concerning the limited data gathered during the course of our work. Conditions other than described in this report may be found at the subject location(s).

3. GZA’s services were performed using the degree of skill and care ordinarily exercised by qualified professionals performing the same type of services, at the same time, under similar conditions, at the same or a similar property. No warranty, expressed or implied, is made. Specifically, GZA does not and cannot represent that the Site contains no hazardous material, oil, or other latent condition beyond that observed by GZA during its study. Additionally, GZA makes no warranty that any response action or recommended action will achieve all of its objectives or that the findings of this study will be upheld by a local, state or federal agency.

4. In conducting our work, GZA relied upon certain information made available by public agencies, Client and/or others. GZA did not attempt to independently verify the accuracy or completeness of that information. Inconsistencies in this information which we have noted, if any, are discussed in the Report.

SUBSURFACE CONDITIONS

5. The generalized soil profile(s) provided in our Report are based on widely‐spaced subsurface explorations and are intended only to convey trends in subsurface conditions. The boundaries between strata are approximate and idealized, and were based on our assessment of subsurface conditions. The composition of strata, and the transitions between strata, may be more variable and more complex than indicated. For more specific information on soil conditions at a specific location refer to the exploration logs. The nature and extent of variations between these explorations may not become evident until further exploration or construction. If variations or other latent conditions then become evident, it will be necessary to reevaluate the conclusions and recommendations of this report.

6. Water level readings have been made, as described in this Report, in and monitoring wells at the specified times and under the stated conditions. These data have been reviewed and interpretations have been made in this report. Fluctuations in the level of the groundwater however occur due to temporal or spatial variations in areal recharge rates, soil heterogeneities, the presence of subsurface utilities, and/or natural or artificially induced perturbations. The observed water table may be other than indicated in the Report.

COMPLIANCE WITH CODES AND REGULATIONS

7. We used reasonable care in identifying and interpreting applicable codes and regulations necessary to execute our scope of work. These codes and regulations are subject to various, and possibly contradictory, interpretations. Interpretations and compliance with codes and regulations by other parties is beyond our control.


Page | 2 April 2012

active by Design

SCREENING AND ANALYTICAL TESTING

8. GZA collected environmental samples at the locations identified in the Report. These samples were analyzed for the specific parameters identified in the report. Additional constituents, for which analyses were not conducted, may be present in soil, groundwater, surface water, sediment and/or air. Future Site activities and uses may result in a requirement for additional testing.

9. Our interpretation of field screening and laboratory data is presented in the Report. Unless otherwise noted, we relied upon the laboratory’s QA/QC program to validate these data.

10. Variations in the types and concentrations of contaminants observed at a given location or time may occur due to release mechanisms, disposal practices, changes in flow paths, and/or the influence of various physical, chemical, biological or radiological processes. Subsequently observed concentrations may be other than indicated in the Report.

INTERPRETATION OF DATA

11. Our opinions are based on available information as described in the Report, and on our professional judgment. Additional observations made over time, and/or space, may not support the opinions provided in the Report.

ADDITIONAL INFORMATION

12. In the event that the Client or others authorized to use this report obtain additional information on environmental or hazardous waste issues at the Site not contained in this report, such information shall be brought to GZA's attention forthwith. GZA will evaluate such information and, on the basis of this evaluation, may modify the conclusions stated in this report.

ADDITIONAL SERVICES

13. GZA recommends that we be retained to provide services during any future investigations, design, implementation activities, construction, and/or property development/ redevelopment at the Site. This will allow us the opportunity to: i) observe conditions and compliance with our design concepts and opinions; ii) allow for changes in the event that conditions are other than anticipated; iii) provide modifications to our design; and iv) assess the consequences of changes in technologies and/or regulations.

CONCEPTUAL SITE MODEL

14. Our opinions were developed, in part, based upon a comparison of site data to conditions anticipated within our Conceptual Site Model (CSM). The CSM is based on available information, and professional judgment. There are rarely sufficient data to develop a unique CSM. Therefore observations over time, and/or space, may vary from those depicted in the CSM provided in this report. In addition, the CSM should be evaluated and refined (as appropriate) whenever significant new information and/or data is obtained.

COST ESTIMATES

15. Unless otherwise stated, our cost estimates are only for comparative and general planning purposes. These estimates may involve approximate quantity evaluations. Note that these quantity estimates are not intended to be sufficiently accurate to develop construction bids, or to predict the actual cost of work addressed in this Report. Further, since we have no control over either when the work will take place or the labor and material costs required to plan and execute the anticipated work, our cost estimates were made by relying on our experience, the experience of others, and other sources of readily available information. Actual costs may vary over time and could be significantly more, or less, than stated in the Report.


Page | 3 April 2012

active by Design

RISK CHARACTERIZATION

16. Our risk evaluation was performed in accordance with generally accepted practices of appropriate Federal and/or state regulatory agencies, and of other consultants undertaking similar studies at the same time, for similar purposes, and under similar circumstances. The findings of the risk evaluation are dependent on the numerous assumptions and uncertainties inherent in the risk characterization process. Sources of the uncertainty may include Site conditions; Site use; the nature, extent, concentration and distribution of contaminants; and the available toxicity and/or health/risk based regulatory information. Consequently, the findings of the risk characterization are not an absolute characterization of actual risks; but rather serve to highlight potential incremental risks associated with activities indicated in the Report. Actual risks may be other than indicated in the Report.

Appendix C – Exploration Logs

1

2

3

3

4

4

4

4

5

12

12

12

12

10

8

16

20

24

24

24

12

12

12

12

24

24

24

24

24

24

24

1-2

3-4

5-6

7-8

8-10

10-12

12-14

14-16

16-18

18-20

20-22

Cuttings andSand 0-10'

2" PVC Riser0-16'

Bentonite 10-13'

Sand 13-22'

2" PVC 0.010Slot Screen15-20'

0.25'

12'12.25'

14'14.33'

22'

ND

ND

ND

0.1

8.0

10.4

9.7

1.4

0.6

2.2

15.1

3 1110 9

4 811 10

1 22 1

1 11 1

1 11 1

1 11 1

1 11 1

21

19

4

2

2

2

2

1. Boring initiated by vacuum excavation to approximately 8 feet below ground surface (ft bgs). Soil samples S-1 to S-4 were collected via hand auger in advance of the vacuum excavation.2. Field testing results represent total organic vapor levels, referenced to a benzene standard, measured in the headspace of sealed soil sample jars using a Ion Science Phocheck Tiger organic

vapor meter equipped with a photoionization detector (PID) and 10.6eV lamp. Results in parts per million by volume (ppmv). ND indicates nothing detected (<0.1 ppmv).3. Slight sheen and petroleum-like odor.4. Organic/hydrogen sulfide-like odor.5. Soil samples S-2, S-3, and S-9 were submitted for PCB analysis. Soil sample S-9 was also submitted for 8260 VOC analysis.

'

''

''

'

S-1: Wet, dark brown, fine to coarse

SAND and fine GRAVEL, trace Silt,

trace Slag.



trace Slag.



trace Slag.



trace Slag.

S-5: Medium dense, moist, brown-red,

GRAVEL and medium to coarse

SAND, trace Silt.

S-6: Medium dense, wet, brown,

GRAVEL, some fine to coarse Sand,

trace Silt.

S-7: (Top 3") Very loose, gray,

GRAVEL and fine to coarse SAND,

some Silt. (Bottom 13") Soft, wet,

gray, Silty CLAY.

S-8: (Top 4") Soft, moist, gray, fine

SAND and SILT. (Bottom 16") Soft,

moist, gray, Silty CLAY.

S-9: Soft, moist, gray, Silty CLAY.

S-10: Soft, moist, gray, Silty CLAY,

trace Shells.

S-11: Soft, moist, gray, Silty CLAY,

trace Shells.

Bottom of boring at 22 feet.

S-1

S-2

S-3

S-4

S-5

S-6

S-7

S-8

S-9

S-10

S-11

ASPHALT

SAND AND GRAVEL FILL

SILTY SAND AND GRAVEL

SILTY CLAY

SAND AND SILT

SILTY CLAY

Boring Location:

22Date Start - Finish: 9/21/2018 - 9/27/2018

0845

Casing

Type of Rig:

Drilling Method:

10/10/18 10.69 NA

Hmr Weight (lb.):

Matt Dion/James Sullivan

Time

Sampler Type:

I.D./O.D.:

SampleOther:

Groundwater Depth (ft.)

Technical Drilling Services, Inc.

Logged By:

NA

Water Depth

6.319/27/18

Date

H. Datum:Drilling Co.:

Equipment Installed

I.D./O.D (in.):Sampler Hmr Wt:

Rig Model:

1-3/8"/2"

Hmr Fall (in.):

HSA

140 lbs30"

CME 75

2 weeks

V. Datum:

Truck

Gary Couette

Other:

Stab. Time

30 min.

4 1/4"/7 5/8"

Auger/Casing Type:

Foreman:

1300

HSA

Split Spoon

See Plan

Sampler Hmr Fall:

Ground Surface Elev. (ft.):Final Boring Depth (ft.):

FLUSH MOUNTEDROAD BOXR

emar

k

GZAGeoEnvironmental, Inc.

Rec.(in)

Depth(ft)

5

10

15

20

25

30

Pen.(in)

Depth(ft.) D

epth

(ft)

FieldTestData

BORING NO.: T21B9-MWSHEET: 1 of 1PROJECT NO: 15442.76REVIEWED BY: JRC

Blows(per 6 in.)


Mystic Station173 Alford Street

Charlestown, Massachusetts

SPTValue

1544

2.76

MY

ST

IC S

TA

TIO

N-1

23 A

LFO

RD

ST

RE

ET

-CH

AR

LES

TO

WN

, MA

.GP

J; S

TA

ND

AR

D B

OR

ING

W/E

W/O

SM

P 2

PG

2; 1

0/18

/20

18

See log key for explanation of sample descriptions and identification procedures. Stratification lines represent approximate boundaries between soil and bedrocktypes. Actual transitions may be gradual. Water level readings have been made at the times and under the conditions stated. Fluctuations of groundwater mayoccur due to other factors than those present at the times the measurements were made.

Ele

v.(f

t)Sample DescriptionModified Burmister

Boring No.:T21B9-MW

RE

MA

RK

STEST BORING LOG

CasingBlows/CoreRateMin/ft

No.

StratumDescription

-

-

-

-

-

/ - " ~--~/ ·:··.·

:-·~

""~---~ "~---~/ . .

·.-_· .. ~

t::: .. · .. ... ·.;:::: · .. . ... t::: ..

. - ·· . I--- . . ~ : .

... ·.;:::: · .

. ... t::: .. . - ·· . I--- . . t::: .. · ..

·.·.-··

I

1

2

3

4

4

4

4

5

12

12

12

12

8

5

8

13

24

24

24

12

12

12

12

24

24

24

24

24

24

24

1-2

3-4

5-6

7-8

8-10

10-12

12-14

14-16

16-18

18-20

20-22

Cuttings andSand 0-10'

2" PVC Riser0-15'

Bentonite 10-13'

Sand 13-22'

2" PVC 0.010Slot Screen15-20

0.25'

10'

12'

16'

22'

ND

ND

ND

0.1

0.5

3.9

0.5

0.6

21.6

100.3

6 89 10

6 1614 18

1 22 4

1 11 2

1 11 1

1 11 1

1 11 1

17

30

4

2

2

2

2

1. Boring initiated by vacuum excavation to approximately 8 feet below ground surface (ft bgs). Soil samples S-1 to S-4 were collected via hand auger in advance of the vacuum excavation.2. Field testing results represent total organic vapor levels, referenced to a benzene standard, measured in the headspace of sealed soil sample jars using a Ion Science Phocheck Tiger organic

vapor meter equipped with a photoionization detector (PID) and 103. Faint petroleum-like odor.4. Slight organic/hyrdrogen sulfide-like odor.5. Soil samples S-2, S-3, S-10 and S-11 were submitted for PCB analysis. Soil samples S-10 and S-11 were also submitted for 8260 VOC analysis.

'

'

'

'

'



trace Slag.



trace Slag.



trace Slag.



trace Slag.

S-5: Medium dense, moist,

brown/gray, medium to coarse SAND

and GRAVEL, some SILT.

S-6: Very stiff, moist, gray, SILT.

S-7: Soft, wet, gray, Silty CLAY, trace

fine Sand.

S-8: Soft, wet, gray, Silty CLAY, some

fine to coarse Sand and Gravel.

S-9: Soft, wet, gray, Silty CLAY, trace

Shells.

S-10: Soft, wet, gray, Silty CLAY,

trace Shells.

S-11: Soft, wet, gray, Silty CLAY,

trace Shells.

Bottom of boring at 22 feet.

S-1

S-2

S-3

S-4

S-5

S-6

S-7

S-8

S-9

S-10

S-11

ASPHALT

SAND AND GRAVEL FILL

SILT

SILTY CLAY WITH SAND

AND GRAVEL LENSES

SILTY CLAY

Boring Location:

22Date Start - Finish: 9/21/2018 - 9/27/2018

0830

Casing

Type of Rig:

Drilling Method:

10/10/18 9.67 NA

Hmr Weight (lb.):

Matt Dion/James Sullivan

Time

Sampler Type:

I.D./O.D.:

SampleOther:

Groundwater Depth (ft.)

Technical Drilling Services, Inc.

Logged By:

NA

Water Depth

5.469/27/18

Date

H. Datum:Drilling Co.:

Equipment Installed

I.D./O.D (in.):Sampler Hmr Wt:

Rig Model:

1-3/8"/2"

Hmr Fall (in.):

HSA

140 lbs30"

CME 75

2 weeks

V. Datum:

Truck

Gary Couette

Other:

Stab. Time

1.5 hrs.

4 1/4"/7 5/8"

Auger/Casing Type:

Foreman:

1330

HSA

Split Spoon

See Plan

Sampler Hmr Fall:

Ground Surface Elev. (ft.):Final Boring Depth (ft.):

FLUSH MOUNTEDROAD BOXR

emar

k

GZAGeoEnvironmental, Inc.

Rec.(in)

Depth(ft)

5

10

15

20

25

30

Pen.(in)

Depth(ft.) D

epth

(ft)

FieldTestData

BORING NO.: T21B10-MWSHEET: 1 of 1PROJECT NO: 15442.76REVIEWED BY:

Blows(per 6 in.)


Mystic Station173 Alford Street

Charlestown, Massachusetts

SPTValue

1544

2.76

MY

ST

IC S

TA

TIO

N-1

23 A

LFO

RD

ST

RE

ET

-CH

AR

LES

TO

WN

, MA

.GP

J; S

TA

ND

AR

D B

OR

ING

W/E

W/O

SM

P 2

PG

2; 1

0/18

/20

18

See log key for explanation of sample descriptions and identification procedures. Stratification lines represent approximate boundaries between soil and bedrocktypes. Actual transitions may be gradual. Water level readings have been made at the times and under the conditions stated. Fluctuations of groundwater mayoccur due to other factors than those present at the times the measurements were made.

Ele

v.(f

t)Sample DescriptionModified Burmister

Boring No.:T21B10-MW

RE

MA

RK

STEST BORING LOG

CasingBlows/CoreRateMin/ft

No.

StratumDescription

-

-

-

-

-

/ - " ~--~/ ·:··.·

·-.·~

·.-_· .. ~

·t::: _. · .. 1-----------1 ·: ·.;:::: · .

... t::: .. . - ·· . I--- . . . ~ :

... ·.;:::: · . ... t::: .. . - ·· . I--- . . ·t::: _. · ..

·.·.-·

I

Appendix D – Laboratory Analytical Reports

ESS LaboratoryDivision of Thielsch Engineering, Inc.

BAL Laboratory The Microbiology Division of Thielsch Engineering, Inc.

CERTIFICATE OF ANALYSIS

Jason Chrzanowski



Norwood, MA 02062

RE: Mystic Station (01.0015442.76)

ESS Laboratory Work Order Number: 1809599

This signed Certificate of Analysis is our approved release of your analytical results. These results are

only representative of sample aliquots received at the laboratory. ESS Laboratory expects its clients to

follow all regulatory sampling guidelines. Beginning with this page, the entire report has been paginated.

This report should not be copied except in full without the approval of the laboratory. Samples will be

disposed of thirty days after the final report has been delivered. If you have any questions or concerns,

please feel free to call our Customer Service Department.

Laurel Stoddard

Laboratory Director

Analytical Summary

The project as described above has been analyzed in accordance with the ESS Quality Assurance Plan.

This plan utilizes the following methodologies: US EPA SW-846, US EPA Methods for Chemical

Analysis of Water and Wastes per 40 CFR Part 136, APHA Standard Methods for the Examination of

Water and Wastewater, American Society for Testing and Materials (ASTM), and other recognized

methodologies. The analyses with these noted observations are in conformance to the Quality Assurance

Plan. In chromatographic analysis, manual integration is frequently used instead of automated

integration because it produces more accurate results.

The test results present in this report are in compliance with TNI and relative state standards, and/or

client Quality Assurance Project Plans (QAPP). The laboratory has reviewed the following: Sample

Preservations, Hold Times, Initial Calibrations, Continuing Calibrations, Method Blanks, Blank Spikes,

Blank Spike Duplicates, Duplicates, Matrix Spikes, Matrix Spike Duplicates, Surrogates and Internal

Standards. Any results which were found to be outside of the recommended ranges stated in our SOPs

will be noted in the Project Narrative.

185 Frances Avenue, Cranston, RI 02910-2211 Tel: 401-461-7181 Fax: 401-461-4486 http://www.ESSLaboratory.comDependability ♦ Quality ♦ Service

Page 1 of 14

SMorrell

Reviewed

Client Name: GZA GeoEnvironmental, Inc.Client Project ID: Mystic Station ESS Laboratory Work Order: 1809599




SAMPLE RECEIPT

The following samples were received on September 24, 2018 for the analyses specified on the enclosed Chain of Custody

Record.

To achieve CAM compliance for MCP data, ESS Laboratory has reviewed all QA/QC Requirements and Performance

Standards listed in each method. Holding times and preservation have also been reviewed. All CAM requirements have been

performed and achieved unless noted in the project narrative.

Each method has been set-up in the laboratory to reach required MCP standards. The methods for aqueous VOA and Soil

Methanol VOA have known limitations for certain analytes. The regulatory standards may not be achieved due to these

limitations. In addition, for all methods, matrix interferences, dilutions, and %Solids may elevate method reporting limits

above regulatory standards. ESS Laboratory can provide, upon request, a Limit Checker (regulatory standard comparison

spreadsheet) electronic deliverable which will highlight these exceedances.

Lab Number MatrixSample Name AnalysisT21B9 S2 3ft BGS 8082ASoil1809599-01

T21B9 S3 5ft BGS 8082ASoil1809599-02

T21B10 S2 3ft BGS 8082ASoil1809599-03

T21B10 S3 5ft BGS 8082ASoil1809599-04


Page 2 of 14





PROJECT NARRATIVE

8082A Polychlorinated Biphenyls (PCB)Surrogate recovery(ies) diluted below the MRL (SD).1809599-01

Decachlorobiphenyl (% @ 30-150%), Decachlorobiphenyl [2C] (% @ 30-150%), Tetrachloro-m-xylene

(% @ 30-150%), Tetrachloro-m-xylene [2C] (% @ 30-150%)

Surrogate recovery(ies) outside of criteria due to matrix (UCM/coelution/matrix is present) (SM).1809599-02

Decachlorobiphenyl (1080% @ 30-150%), Decachlorobiphenyl [2C] (1010% @ 30-150%)

Surrogate recovery(ies) diluted below the MRL (SD).1809599-03

Decachlorobiphenyl (% @ 30-150%), Decachlorobiphenyl [2C] (% @ 30-150%), Tetrachloro-m-xylene

(% @ 30-150%), Tetrachloro-m-xylene [2C] (% @ 30-150%)

End of Project Narrative.

No other observations noted.

DATA USABILITY LINKSTo ensure you are viewing the most current version of the documents below, please clear your internet cookies for

www.ESSLaboratory.com. Consult your IT Support personnel for information on how to clear your internet cookies.

Definitions of Quality Control Parameters

Semivolatile Organics Internal Standard Information

Volatile Organics Internal Standard Information

Volatile Organics Surrogate Information

Semivolatile Organics Surrogate Information

EPH and VPH Alkane Lists


Page 3 of 14

http://www.esslaboratory.com/pdf/du.pdf




http://www.esslaboratory.com/pdf/svoa_i.pdf

http://www.esslaboratory.com/pdf/voa_i.pdf

http://www.esslaboratory.com/pdf/voa_s.pdf

http://www.esslaboratory.com/pdf/svoa_s.pdf

http://www.esslaboratory.com/pdf/eph_vph.pdf





CURRENT SW-846 METHODOLOGY VERSIONS

Prep Methods

3005A - Aqueous ICP Digestion

3020A - Aqueous Graphite Furnace / ICP MS Digestion

3050B - Solid ICP / Graphite Furnace / ICP MS Digestion

3060A - Solid Hexavalent Chromium Digestion

3510C - Separatory Funnel Extraction

3520C - Liquid / Liquid Extraction

3540C - Manual Soxhlet Extraction

3541 - Automated Soxhlet Extraction

3546 - Microwave Extraction

3580A - Waste Dilution

5030B - Aqueous Purge and Trap

5030C - Aqueous Purge and Trap

5035 - Solid Purge and Trap

Analytical Methods

1010A - Flashpoint

6010C - ICP

6020A - ICP MS

7010 - Graphite Furnace

7196A - Hexavalent Chromium

7470A - Aqueous Mercury

7471B - Solid Mercury

8011 - EDB/DBCP/TCP

8015C - GRO/DRO

8081B - Pesticides

8082A - PCB

8100M - TPH

8151A - Herbicides

8260B - VOA

8270D - SVOA

8270D SIM - SVOA Low Level

9014 - Cyanide

9038 - Sulfate

9040C - Aqueous pH

9045D - Solid pH (Corrosivity)

9050A - Specific Conductance

9056A - Anions (IC)

9060A - TOC

9095B - Paint Filter

MADEP 04-1.1 - EPH

MADEP 04-2.1 - VPH

SW846 Reactivity Methods 7.3.3.2 (Reactive Cyanide) and 7.3.4.1 (Reactive Sulfide) have been withdrawn by EPA. These

methods are reported per client request and are not NELAP accredited.


Page 4 of 14





MassDEP Analytical Protocol Certification Form

MADEP RTN:

This form provides certification for the following data set: 1809599-01 through 1809599-04

Matrices: ( ) Ground Water/Surface Water ( ) Soil/Sediment ( ) Drinking Water ( ) Air ( ) Other:_______________

CAM Protocol (check all that apply below):

( ) 8260 VOC ( ) 7470/7471 Hg ( ) MassDEP VPH ( ) 8082 PCB ( ) 9014 Total ( ) 6860 PerchlorateCAM II A CAM III B (GC/PID/FID) CAM V A Cyanide/PAC CAM VIII B

CAM IV A CAM VI A

( ) 8270 SVOC ( ) 7010 Metals ( ) MassDEP VPH ( ) 8081 Pesticides ( ) 7196 Hex Cr ( ) MassDEP APHCAM II B CAM III C (GC/MS) CAM V B CAM VI B CAM IX A

CAM IV C

( ) 6010 Metals ( ) 6020 Metals ( ) MassDEP EPH ( ) 8151 Herbicides ( ) Explosives ( ) TO-15 VOCCAM III A CAM III D CAM IV B CAM V C CAM VIII A CAM IX B

Affirmative responses to questions A through F are required for ''Presumptive Certainty'' status

A Were all samples received in a condition consistent with those described on the Chain-of-Custody, properly Yes ( ) No ( )

preserved (including temperature) in the field or laboratory, and prepared/analyzed within method holding times?

B Were the analytical method(s) and all associated QC requirements specified in the selected CAM protocol(s) Yes ( ) No ( )

followed?

C Were all required corrective actions and analytical response actions specified in the selected CAM protocol(s) Yes ( ) No ( )

implemented for all identified performance standard non-conformances?

D Does the laboratory report comply with all the reporting requirements specified in the CAM VII A, "Quality Yes ( ) No ( )

Assurance and Quality Control Guidelines for the Acquisition and Reporting of Analytical Data"?

E VPH, EPH, APH and TO-15 only: a. Was each method conducted without significant modification(s)? (Refer Yes ( ) No ( )

to the individual method(s) for a list of significant modifications).

b. APH and TO-15 Methods only: Was the complete analyte list reported for each method? Yes ( ) No ( )

F Were all applicable CAM protocol QC and performance standard non-conformances identified and evaluated Yes ( ) No ( )

in a laboratory narrative (including all "No" responses to Questions A through E)?

Responses to Questions G, H and I below are required for '''Presumptive Certainty'' status

G Were the reporting limits at or below all CAM reporting limits specified in the selected CAM protocols(s)? Yes ( ) No ( )*

Data User Note: Data that achieve ''Presumptive Certainty'' status may not necessarily meet the data usability and

representativeness requirements described in 310 CMR 40. 1056 (2)(k) and WSC-07-350.

H Were all QC performance standards specified in the CAM protocol(s) achieved? Yes ( ) No ( )*

I Were results reported for the complete analyte list specified in the selected CAM protocol(s)? Yes ( ) No ( )*

*All negative responses must be addressed in an attached laboratory narrative.

I, the undersigned, attest under the pains and penalties of perjury that, based upon my personal inquiry of those responsible

for obtaining the information, the material contained in this analytical report is, to the best of my knowledge and belief,

accurate and complete.

Signature: ________________________________ Date: October 01, 2018

Printed Name: Laurel Stoddard Position: Laboratory Director


X

X

X

X

X

X

X

X

XX

Page 5 of 14





Client Sample ID: T21B9 S2 3ft BGS

Date Sampled: 09/21/18 08:20

ESS Laboratory Sample ID: 1809599-01

Sample Matrix: Soil

Prepared: 9/27/18 18:39Analyst: CADInitial Volume: 20.4

Final Volume: 10

Percent Solids: 87

Extraction Method: 3540C

Units: mg/kg dry

8082A Polychlorinated Biphenyls (PCB)

Analyte Results (MRL) MDL Method Limit DF Analyzed Sequence Batch8082AAroclor 1016 CI8270710/01/18 10:20 50 ND (2.8)

8082AAroclor 1221 CI8270710/01/18 10:20 50 ND (2.8)

8082AAroclor 1232 CI8270710/01/18 10:20 50 ND (2.8)

8082AAroclor 1242 CI8270710/01/18 10:20 50 ND (2.8)

8082AAroclor 1248 CI8270710/01/18 10:20 50 ND (2.8)

8082AAroclor 1254 CI8270710/01/18 10:20 50 ND (2.8)

8082AAroclor 1260 CI8270710/01/18 10:20 50 17.6 (2.8)

8082AAroclor 1262 CI8270710/01/18 10:20 50 ND (2.8)

8082AAroclor 1268 CI8270710/01/18 10:20 50 ND (2.8)

%Recovery Qualifier Limits

30-150 %Surrogate: Decachlorobiphenyl SD

30-150 %Surrogate: Decachlorobiphenyl [2C] SD

30-150 %Surrogate: Tetrachloro-m-xylene SD

30-150 %Surrogate: Tetrachloro-m-xylene [2C] SD


Page 6 of 14






Date Sampled: 09/21/18 08:26


Sample Matrix: Soil


Final Volume: 10

Percent Solids: 89


Units: mg/kg dry



8082AAroclor 1221 CI8270709/28/18 18:47 1 ND (0.06)

8082AAroclor 1232 CI8270709/28/18 18:47 1 ND (0.06)

8082AAroclor 1242 CI8270709/28/18 18:47 1 ND (0.06)

8082AAroclor 1248 CI8270709/28/18 18:47 1 ND (0.06)

8082AAroclor 1254 CI8270709/28/18 18:47 1 ND (0.06)

8082AAroclor 1260 CI8270710/01/18 10:39 10 4.9 (0.6)

8082AAroclor 1262 CI8270709/28/18 18:47 1 ND (0.06)

8082AAroclor 1268 CI8270710/01/18 10:39 10 1.5 (0.6)


30-1501080 %Surrogate: Decachlorobiphenyl SM

30-1501010 %Surrogate: Decachlorobiphenyl [2C] SM

30-15079 %Surrogate: Tetrachloro-m-xylene

30-15078 %Surrogate: Tetrachloro-m-xylene [2C]


Page 7 of 14






Date Sampled: 09/21/18 09:05


Sample Matrix: Soil


Final Volume: 10

Percent Solids: 94


Units: mg/kg dry



8082AAroclor 1221 CI8270710/01/18 10:58 20 ND (1.1)

8082AAroclor 1232 CI8270710/01/18 10:58 20 ND (1.1)

8082AAroclor 1242 CI8270710/01/18 10:58 20 ND (1.1)

8082AAroclor 1248 CI8270710/01/18 10:58 20 ND (1.1)

8082AAroclor 1254 CI8270710/01/18 10:58 20 ND (1.1)

8082AAroclor 1260 CI8270710/01/18 10:58 20 6.3 (1.1)

8082AAroclor 1262 CI8270710/01/18 10:58 20 ND (1.1)

8082AAroclor 1268 CI8270710/01/18 10:58 20 ND (1.1)


30-150 %Surrogate: Decachlorobiphenyl SD

30-150 %Surrogate: Decachlorobiphenyl [2C] SD

30-150 %Surrogate: Tetrachloro-m-xylene SD

30-150 %Surrogate: Tetrachloro-m-xylene [2C] SD


Page 8 of 14






Date Sampled: 09/21/18 09:07


Sample Matrix: Soil


Final Volume: 10

Percent Solids: 93


Units: mg/kg dry



8082AAroclor 1221 CI8270709/28/18 19:25 1 ND (0.05)

8082AAroclor 1232 CI8270709/28/18 19:25 1 ND (0.05)

8082AAroclor 1242 CI8270709/28/18 19:25 1 ND (0.05)

8082AAroclor 1248 CI8270709/28/18 19:25 1 ND (0.05)

8082AAroclor 1254 CI8270709/28/18 19:25 1 ND (0.05)

8082AAroclor 1260 CI8270710/01/18 11:17 10 4.6 (0.5)

8082AAroclor 1262 CI8270709/28/18 19:25 1 ND (0.05)

8082AAroclor 1268 CI8270709/28/18 19:25 1 ND (0.05)


30-15074 %Surrogate: Decachlorobiphenyl

30-15066 %Surrogate: Decachlorobiphenyl [2C]




Page 9 of 14





Quality Control Data

Analyte Result MRL Units

Spike

Level

Source

Result %REC

%REC

Limits RPD

RPD

Limit Qualifier


Batch CI82707 - 3540C

Blank

0.05 mg/kg wetAroclor 1016 ND

0.05 mg/kg wetAroclor 1016 [2C] ND

















0.02500 30-150850.0212 mg/kg wetSurrogate: Decachlorobiphenyl

0.02500 30-150750.0187 mg/kg wetSurrogate: Decachlorobiphenyl [2C]

0.02500 30-150750.0187 mg/kg wetSurrogate: Tetrachloro-m-xylene

0.02500 30-150820.0205 mg/kg wetSurrogate: Tetrachloro-m-xylene [2C]

LCS

0.05 0.5000 40-14077mg/kg wetAroclor 1016 0.4

0.05 0.5000 40-14079mg/kg wetAroclor 1016 [2C] 0.4

0.05 0.5000 40-14076mg/kg wetAroclor 1260 0.4






LCS Dup

0.05 0.5000 3040-14085 11mg/kg wetAroclor 1016 0.4

0.05 0.5000 3040-14086 8mg/kg wetAroclor 1016 [2C] 0.4

0.05 0.5000 3040-14084 10mg/kg wetAroclor 1260 0.4







Page 10 of 14





Notes and Definitions

U Analyte included in the analysis, but not detected

SM Surrogate recovery(ies) outside of criteria due to matrix (UCM/coelution/matrix is present) (SM).

SD Surrogate recovery(ies) diluted below the MRL (SD).

D Diluted.

Sample results reported on a dry weight basisRelative Percent DifferenceRPD

dryAnalyte NOT DETECTED at or above the MRL (LOQ), LOD for DoD Reports, MDL for J-Flagged AnalytesND

MDLMRL

Method Detection LimitMethod Reporting Limit

I/VF/V

Initial VolumeFinal Volume

§ Subcontracted analysis; see attached report123

Range result excludes concentrations of surrogates and/or internal standards eluting in that range.Range result excludes concentrations of target analytes eluting in that range.Range result excludes the concentration of the C9-C10 aromatic range.

Avg Results reported as a mathematical average.NR No Recovery

LOD Limit of Detection

[CALC] Calculated Analyte

LOQ Limit of Quantitation

DL Detection Limit

SUB Subcontracted analysis; see attached reportReporting LimitRL

EDL Estimated Detection Limit


Page 11 of 14





ESS LABORATORY CERTIFICATIONS AND ACCREDITATIONS

ENVIRONMENTAL

Rhode Island Potable and Non Potable Water: LAI00179

http://www.health.ri.gov/find/labs/analytical/ESS.pdf

Connecticut Potable and Non Potable Water, Solid and Hazardous Waste: PH-0750

http://www.ct.gov/dph/lib/dph/environmental_health/environmental_laboratories/pdf/OutofStateCommercialLaboratories.pdf

Maine Potable and Non Potable Water, and Solid and Hazardous Waste: RI00002

http://www.maine.gov/dhhs/mecdc/environmental-health/dwp/partners/labCert.shtml

Massachusetts Potable and Non Potable Water: M-RI002

http://public.dep.state.ma.us/Labcert/Labcert.aspx

New Hampshire (NELAP accredited) Potable and Non Potable Water, Solid and Hazardous Waste: 2424

http://des.nh.gov/organization/divisions/water/dwgb/nhelap/index.htm

New York (NELAP accredited) Non Potable Water, Solid and Hazardous Waste: 11313

http://www.wadsworth.org/labcert/elap/comm.html

New Jersey (NELAP accredited) Non Potable Water, Solid and Hazardous Waste: RI006

http://datamine2.state.nj.us/DEP_OPRA/OpraMain/pi_main?mode=pi_by_site&sort_order=PI_NAMEA&Select+a+Site:=58715

United States Department of Agriculture Soil Permit: P330-12-00139

Pennsylvania: 68-01752

http://www.dep.pa.gov/Business/OtherPrograms/Labs/Pages/Laboratory-Accreditation-Program.aspx


Page 12 of 14

of 14

ESS Laboratory Sample and Cooler Receipt Checklist

Client ___ G~ZA_-~N~o~rw_ood=, ~M_A_-_G_Z~Af~M~M __ _

Shipped/Delivered Via: ____ ..,E,,S"S'--C=ou""r""le"-r ___ _

1. Air bill manifest present? No

Air No.: NA

2. Were custody seals present? No

3. ts radiation count <100 CPM? Yes

4. Is a Cooler Present? Yes

Temp: 1.2 Iced with: -~lc~e __

5. Was COC signed and dated by client? Yes

11. Any Subcontracting needed?

ESS Sample IDs: Yes 1@

Analysis: ____________ _

TAT: __________ _

13. Are the samples properly preserved?

a. If metals preserved upon receipt: fly I No

Date: ____ _

b. Low Level VOA vials frozen:

Sample ReceiVlng Notes:

14. Was there a need to contact Project Manager?

a. Was there a need to contact the client?

Who was contacted?

Date: ____ _

Yes/~ Yes I No

Date: ____ _

ESS Project ID: ----~1780~9~5"°9"'9 ____ _

Date Received: -----"9/"'2'-'4/"'2"0-"18,_ ___ _

Project Due Date: _____ 1"'0'=/1-';/=-20=-1'-'8'-----

Oays for Project: _____ ~5_,D"a~-----

6. Does COC match bottles?

7. Is COC complete and correct?

8. Were samples received intact?

9. Were labs Informed about short holds & rushes?

10. Were any analyses received outside of hold time?

12. Were VOAs received?

a. Air bubbles in aqueous VOAs?

b. Does methanol cover soil completely?

Time: ___ _ By: ______ _

Time: ----By: ______ _

Time: ___ _ By: ______ _

Yes

Yes

Yes

Yes/NoQ

Yes@

Yes I tjc} Yes!M

Yes/No/NA

Sample Container Proper Air Sufficient

Record pH (Cyanide and 608

Bubbles Container Type Preservative

Number ID Container Present

01 270234 Yes NA

02 270233 Yes NA

03 270232 Yes NA

04 270231 Yes NA

2nd Review

Ne barcode labels on correct containers?

Ne all necessary stickers attached?

Volume

Yes Yes Yes Yes

4 oz. Jar - Unpres

4 oz. Jar - Unpres 4 oz. Jar - Unpres 4 oz. Jar - Unpres

~o

\J

Pesticides)

NP NP NP NP

of 14

ESS Laboratory CHAIN OF CUSTODY ESS Lab# i'Kc~~q::; Division of Thie/sch Engineering, Inc. Turn Time ~r-.LlJ?}\ Rush Reporting zcs-r 185 Frances Avenue, Cranston RI 02910 Regulatory State NA- Limits Tel. (401) r 61-7181 Fax (401) 461-4486 Is t his projec~ any of t he following?: Electonic ~Limit Checker )81!,tandard Excel www.esslaborato(Y.com QCT RCP A MCP Q RGP Deliverables Oother (Please Specify-)

/'-7..4--Company Name Project#

µvme-Project Name

/ ')l-/t) 7 7 L ~/.bn.n/1/" Contact Person Address .!!!

.::vk~ C1-l,,eZ...A-,,v11t..1S/L..f ,:;}t.)1/ lh1 ~v!--»-O P,;tf /H/£ V> >,

City State zt Code PO# oi II Jt? l?1. ,r9-'T) l4A- ,,-,2,t) ·z.. C:

<( V

Telephone Number FAX Number Email Address V

ii?(t?,1 . ,-· ,t, ,-, /:t .-,_eit..v<:.L' lvc1nn r~""1 g ESS Lab Collection Collection _,

~ample ID../ ID Date Time Sample Type Sample Matrix "J ,,

v(" t:VBq 5~:J ( 'Z ( lsr-r<:. ) ~ I 9-2/~/~ V~...I.

<;'" -Y1?'7<. A

L q_;l/ /ff/, b~ S' ,211<.q s~ ~ { s- i&;s') ~ ~ lq --u --!YI d/CJS- (' T21 /2,;__o s~ 2 {g ' ,~Gy\ X 4 qr "U .r/r,f ()707 ~ 72-1 B1v s~ '=? r:s-1 ~<75'1 '><

I - '--

Container Type: AC-Air Cassette AG-Amber Glass 8-800 Bottle C-Cubitainer G - Glass 0-0ther P-Poly S-Sterile V-Vial Container Volume: 1-100 ml 2-2.5 gal 3-250 ml 4-300 ml 5-500 ml 6-1 L 7-VOA 8-2 oz 9-4 oz 10-8 oz 11-0ther·

Preservation Code: 1-Non Preserved 2-HCI 3--H2S04 4-HN03 5-NaOH S-Methano/ 7-Na2S203 ~ZnAce, NaOH 9-NH4CI 10-01 H20 11 •Ascort>k: Acid 12-0ther

Number of Containers per Sample:

La~/ Use Only Sam p ied by : ,1 ) ~ ~ P\<n.)7\/ Cooler Present: Comments: Ple-ase specify "Other" preservative and containers types in t his space

I Seals Intact:

Cooler Temperature: 1 . L ·c :r.:.. c_ e:.. \LC Relinquished by: (Signature, Date & Time) Received By: (Signature, Date & Time) Relinquished By: (Signature, Date & Time) Received By: (Signature, Date & Time)

111 t,l{,_,(/ /), V)_,, ;_ 1:::f..,-rJJ G2.A G-cskt-Cf -rz....t.. -{ » ,-- ·Q 9.) y ~(y a.~ 1 /c't/10 !~'?117 1-r I C., p J 2 .so

Relinquished by: (Signature. Date & Time) Received By: (Signature, Date & Time) Relinquished By: (Q.ig~ature, Date & Time) Received By: (Signature/ Date & Time)

R~~ ci h ... '{ )12 11 0.3 (J _\~ q '7.~I t l ,13) I I ' \




Jason Chrzanowski



Norwood, MA 02062









Laurel Stoddard

Laboratory Director

Analytical Summary















Page 1 of 17

SMorrell

Reviewed





SAMPLE RECEIPT

The following samples were received on September 28, 2018 for the analyses specified on the enclosed Chain of Custody

Record.









Question I: All samples for VOA were analyzed for a subset of the required MCP list per the client's request.

Lab Number MatrixSample Name AnalysisT21B9 S-9 16-18ft 8082A, 8260BSoil1809783-01

T21B10 S-10 18-20ft 8082A, 8260BSoil1809783-02

T21B10 S-11 20-22ft 8082A, 8260BSoil1809783-03


Page 2 of 17





PROJECT NARRATIVE

5035/8260B Volatile Organic Compounds / MethanolSurrogate recovery(ies) above upper control limit (S+).1809783-03

1,2-Dichloroethane-d4 (141% @ 70-130%), Dibromofluoromethane (134% @ 70-130%)

8082A Polychlorinated Biphenyls (PCB)Continuing Calibration %Diff/Drift is below control limit (CD-).C8J0071-CCV1

Decachlorobiphenyl [2C] (32% @ 20%)


No other observations noted.










Page 3 of 17














Prep Methods














Analytical Methods

1010A - Flashpoint

6010C - ICP

6020A - ICP MS





8011 - EDB/DBCP/TCP

8015C - GRO/DRO

8081B - Pesticides

8082A - PCB

8100M - TPH

8151A - Herbicides

8260B - VOA

8270D - SVOA


9014 - Cyanide

9038 - Sulfate

9040C - Aqueous pH



9056A - Anions (IC)

9060A - TOC


MADEP 04-1.1 - EPH

MADEP 04-2.1 - VPH




Page 4 of 17






MADEP RTN:





CAM IV A CAM VI A


CAM IV C






followed?























X

X X

X

X

X

X

X

X

XX

Page 5 of 17





Client Sample ID: T21B9 S-9 16-18ft

Date Sampled: 09/27/18 10:00


Sample Matrix: Soil

Analyst: MDInitial Volume: 11.2Final Volume: 15

Percent Solids: 72

Extraction Method: 5035

Units: mg/kg dry

5035/8260B Volatile Organic Compounds / Methanol

Analyte Results (MRL) MDL Method Limit DF Analyzed Sequence Batch8260B1,2,3-Trichlorobenzene CJ80247C8J005110/02/18 13:18 1 ND (0.447)

8260B1,2,4-Trichlorobenzene CJ80247C8J005110/02/18 13:18 1 ND (0.447)

8260B1,2-Dichlorobenzene CJ80247C8J005110/02/18 13:18 1 ND (0.447)



8260BChlorobenzene CJ80247C8J005110/02/18 13:18 1 ND (0.447)


70-130112 %Surrogate: 1,2-Dichloroethane-d4

70-130102 %Surrogate: 4-Bromofluorobenzene

70-130111 %Surrogate: Dibromofluoromethane

70-130104 %Surrogate: Toluene-d8


Page 6 of 17






Date Sampled: 09/27/18 10:00


Sample Matrix: Soil


Final Volume: 10

Percent Solids: 72


Units: mg/kg dry


Analyte Results (MRL) MDL Method Limit DF Analyzed Sequence Batch8082AAroclor 1016 CJ8010910/02/18 19:52 1 ND (0.07)

8082AAroclor 1221 CJ8010910/02/18 19:52 1 ND (0.07)

8082AAroclor 1232 CJ8010910/02/18 19:52 1 ND (0.07)

8082AAroclor 1242 CJ8010910/02/18 19:52 1 ND (0.07)

8082AAroclor 1248 CJ8010910/02/18 19:52 1 ND (0.07)

8082AAroclor 1254 CJ8010910/02/18 19:52 1 ND (0.07)

8082AAroclor 1260 CJ8010910/02/18 19:52 1 ND (0.07)

8082AAroclor 1262 CJ8010910/02/18 19:52 1 ND (0.07)

8082AAroclor 1268 CJ8010910/02/18 19:52 1 ND (0.07)







Page 7 of 17






Date Sampled: 09/27/18 12:10


Sample Matrix: Soil

Analyst: MDInitial Volume: 10.4Final Volume: 15

Percent Solids: 59


Units: mg/kg dry














Page 8 of 17






Date Sampled: 09/27/18 12:10


Sample Matrix: Soil


Final Volume: 10

Percent Solids: 59


Units: mg/kg dry



8082AAroclor 1221 CJ8010910/02/18 20:11 1 ND (0.09)

8082AAroclor 1232 CJ8010910/02/18 20:11 1 ND (0.09)

8082AAroclor 1242 CJ8010910/02/18 20:11 1 ND (0.09)

8082AAroclor 1248 CJ8010910/02/18 20:11 1 ND (0.09)

8082AAroclor 1254 CJ8010910/02/18 20:11 1 ND (0.09)

8082AAroclor 1260 CJ8010910/02/18 20:11 1 ND (0.09)

8082AAroclor 1262 CJ8010910/02/18 20:11 1 ND (0.09)

8082AAroclor 1268 CJ8010910/02/18 20:11 1 ND (0.09)







Page 9 of 17






Date Sampled: 09/27/18 11:50


Sample Matrix: Soil

Analyst: MDInitial Volume: 13Final Volume: 15

Percent Solids: 60


Units: mg/kg dry









70-130141 %Surrogate: 1,2-Dichloroethane-d4 S+


70-130134 %Surrogate: Dibromofluoromethane S+



Page 10 of 17






Date Sampled: 09/27/18 11:50


Sample Matrix: Soil


Final Volume: 10

Percent Solids: 60


Units: mg/kg dry



8082AAroclor 1221 CJ8010910/02/18 20:30 1 ND (0.08)

8082AAroclor 1232 CJ8010910/02/18 20:30 1 ND (0.08)

8082AAroclor 1242 CJ8010910/02/18 20:30 1 ND (0.08)

8082AAroclor 1248 CJ8010910/02/18 20:30 1 ND (0.08)

8082AAroclor 1254 CJ8010910/02/18 20:30 1 ND (0.08)

8082AAroclor 1260 CJ8010910/02/18 20:30 1 ND (0.08)

8082AAroclor 1262 CJ8010910/02/18 20:30 1 ND (0.08)

8082AAroclor 1268 CJ8010910/02/18 20:30 1 ND (0.08)







Page 11 of 17







Spike

Level

Source

Result %REC

%REC

Limits RPD

RPD

Limit Qualifier


Batch CJ80247 - 5035

Blank

0.200 mg/kg wet1,2,3-Trichlorobenzene ND

0.200 mg/kg wet1,2,4-Trichlorobenzene ND

0.200 mg/kg wet1,2-Dichlorobenzene ND



0.200 mg/kg wetChlorobenzene ND

5.000 70-1301135.67 mg/kg wetSurrogate: 1,2-Dichloroethane-d4

5.000 70-1301004.98 mg/kg wetSurrogate: 4-Bromofluorobenzene

5.000 70-1301115.55 mg/kg wetSurrogate: Dibromofluoromethane

5.000 70-1301025.08 mg/kg wetSurrogate: Toluene-d8

LCS

0.200 2.000 70-130103mg/kg wet1,2,3-Trichlorobenzene 2.06

0.200 2.000 70-13096mg/kg wet1,2,4-Trichlorobenzene 1.92

0.200 2.000 70-13093mg/kg wet1,2-Dichlorobenzene 1.87



0.200 2.000 70-13099mg/kg wetChlorobenzene 1.97





LCS Dup

0.200 2.000 2570-13096 6mg/kg wet1,2,3-Trichlorobenzene 1.93

0.200 2.000 2570-13096 0mg/kg wet1,2,4-Trichlorobenzene 1.92

0.200 2.000 2570-13091 2mg/kg wet1,2-Dichlorobenzene 1.83

0.200 2.000 2570-13098 0.1mg/kg wet1,3-Dichlorobenzene 1.95

0.200 2.000 2570-13098 2mg/kg wet1,4-Dichlorobenzene 1.96

0.200 2.000 2570-130100 0.9mg/kg wetChlorobenzene 1.99






Batch CJ80109 - 3540C

Blank









Page 12 of 17







Spike

Level

Source

Result %REC

%REC

Limits RPD

RPD

Limit Qualifier


Batch CJ80109 - 3540C
















LCS

0.05 0.5000 40-14082mg/kg wetAroclor 1016 0.4


0.05 0.5000 40-14081mg/kg wetAroclor 1260 0.4






LCS Dup

0.05 0.5000 3040-14085 3mg/kg wetAroclor 1016 0.4


0.05 0.5000 3040-14084 3mg/kg wetAroclor 1260 0.4







Page 13 of 17







S+ Surrogate recovery(ies) above upper control limit (S+).

CD- Continuing Calibration %Diff/Drift is below control limit (CD-).



MDLMRL


I/VF/V








DL Detection Limit




Page 14 of 17






ENVIRONMENTAL



















Page 15 of 17

of 17


Client: GZA-Norwood,MA-GZA/MM ESS Project ID: 1809783 Date Received: 9/2812018

Shipped/Delivered Via: ESS Courier Project Due Date: 1015/2018 Days for Project: 5 Da

1. Air bill manifest present? No 6. Does CDC match bottles? Yes

Air No.: NA

2. Were custody seals present? No 7. Is COC complete and correct? Yes

3. Is radiation count <100 CPM? Yes 8. Were samples received intact? Yes

4. Is a Cooler Present? Yes 9. Were labs Informed about short holds & rushes? Yes/No@

1.5 Iced with: Ice Temp: 10. Were any analyses received outside of hold time? Yesrfw


11. Any Subcontracting needed? ESS Sample IDs:

Yes t@i) 12. Were VOAs received? a. Air bubbles in aqueous VOAs?

Analysis: ___________ _ b. Does methanol cover soil completely? TAT: __________ _

13. Are the samples properly preserved? Q1No a. If metals preserved upon receipt: Date: ____ _ Time: ___ _

b. Low Level VOA vials frozen: Date: ____ _ Time: ___ _

Sample Receiving Notes:

14. Was there a need to contact Project Manager? a. Was there a need to contact the client?

Yes /rJ;;) Yes iYo

Who was contacted?

Sample Container Proper Air

Bubbles Number ID Container

Present

01 272408 Yes NA

01 272411 Yes NA 02 272407 Yes NA 02 272447 Yes NA 02 272448 Yes NA 03 272406 Yes NA 03 272409 Yes NA 03 272445 Yes NA

2nd Review Are barcode labels on correct containers? Are all necessary stickers attached?

Completed

Date: ____ _ Time: ___ _

Sufficient Volume

Yes Yes Yes Yes Yes Yes Yes Yes

Container Type

VOA Vial - Methanol 4 oz. Jar - Unpres

VOA Vial - Methanol 2 oz. Jar - Unpres 2 oz. Jar - Unpres

VOA Vial - Methanol 4 oz. Jar - Unpres 2 oz. Jar - Unpres

~No VNo

Preservative

MeOH NP

MeQH NP NP

MeOH NP NP

By: ______ _ By: ______ _

By: ______ _

Record pH (Cyanide and 608 Pesticides)

Br. ___ -,.4;~,_;-1,.... ____ ...,..-.- Date & Time: ___ __::4.!c9t-l,1;-----1.Q,;~--------Reviewed

Br. Delivered

Br.

of 17

JE§§ iLaboratoiry CHAIN OF CUSTODY ESS LAB PROJECT ID

I S<T )Q-,~ Division of Thie /sch Engineering, Inc. Turn Time rx:_. Standard Rush Approved By: Reporting Limits -185 Frances Avenue, C ransto n, RI 02910-2211

State where samples were collected~ RI CT NH NJ NY '\lGS-~ Te l. (4l1) 46 1-7 181 Fax (401) 461-4486

ME Other

www.e , s laborato ry .com Is th.i<:...nro ·ect for any of the following: (please circle) Electonic Deliverable Yes /..,/ No

( MA-MCP CT-RCP NJ-DKQP RGP DOD Other_ Format: Excel~ess --

PDF l...---Olher

GZA Project Manager: _ lrxScYJ ( ,I,,, r.:;-N'Yw<::,k Project No : O \ , OO \ ";)/_,,/ I-{ 'J, 1"~ ·l-rl" ~ GZA GcoEnvironmental, Inc. Project Name: "'

...,_ v

249 Vanderbilt Avenue N\~e, ~~on ·:;; :~~ 'J

:U;

>. .... -; ~ ('\ ~ C

Norwood, MA 02062 :-.M ~

C .~ E < 0

(781) 278-3700 Contract Pricing __ I E

~ I 0

PRESUMPTIVE CERTAINTY REQUIRED Special Pricing WO#: f) u

ESS Lab Date Collection Grab -G Matrix Sample Identification # of -0 Sample ID Time Composite-C Containers ""?

I '1 -2=/-lf \GGG Ci s -\ 1\09 ~-~ ( /l, . /<;fl'~ '2- IX t>< /"~ n

\(, \0 \tJ_l is9 ) -10 ( ;<?-,Ju) 9. rx X 1-t;;/ ~ .:)

1200 T], \ n \0 ~ -9 (/&-1i') 3 Ii. >< /-lo/ IJ

2. (2.. ( () \1.1 B\a 2-) - \CJ ( /<i;-.J,~ •) -~ k l.:X /'l,,\ '1

7> '\ V 1/50 . / .v 11J 5 \6 s - t \ ( Jo -2:Z') 'l Ix Ix (' (.., . IJ

I Preservati@n Code: I-NP, 2-HCI, 3-1-12S04, 4-I-IN03, 5-NaOH, 6-MeOI-I, 7-Asorbic Acid, 8-ZnAct, 9-_ _ l (o

Container ~ ype: P-Poly G-GlaJS AG-Amber Glass $-Sterile V-VOA fG v Matrix{S-S.oJr SD-Solid D-$iudge WW-Wastewater GW-Grounclwatcr SW-Surface Water OW-Drinking Water 0 -0 il W-Wipcs F-Filter

Cooler Present ____::_i_ Yes __ No Sampled by : ' )i'i\ ffiOS:: -~ l l, VCA.vi

Seals Intact Yes _ _ No NA: Comments: et'Y'tJl ( {'Q__;sJ (tS <-f-o I r~(\1,<lSk;@, 3~ . c o/Yl -- -- d°'~r\,C

Cooler 1emperature: 1. S I<:...L ·-;c_.c__ ,¥" Chfo,,obt!.-rtza/1,2_ /.ro,h?fl_,,-5 t:lr1 l e,

Jnquish~ ~gnalure) . ob>!,4 Daie/Ti~b ,72'_(!;,- (,}9~ Cf J 2g JI 51 I 5 5 7 , ~u_:c~:r· (Signature)

Date/Time IK?ed~ gnature ,-/

MN""l I> -;,,,- ·- ..., (1,J..~-nr - /,an ~ 1,lu l18 11 11 ?i' ·,--f.- rlq ('?t l,

R'ehnquished by· (Sfgnalure) Datefrima Received by: (Signature) I Relinquished by· (Signature) Oateffime Rec!iived by (Signalur<I]

Please E-mail all changes to Chain of Custody in writing. Page of




Jason Chrzanowski



Norwood, MA 02062









Laurel Stoddard

Laboratory Director

Analytical Summary















Page 1 of 27

SMorrell

Reviewed





SAMPLE RECEIPT

The following samples were received on October 11, 2018 for the analyses specified on the enclosed Chain of Custody Record.









Lab Number MatrixSample Name AnalysisT21B5-MW 8082A, 8260BGround Water1810370-01

T21B6-MW 8082A, 8260BGround Water1810370-02


T21B8C-MW 8082A, 8260BGround Water1810370-04



T2-MW 8082A, 8260BGround Water1810370-07

TB 8260BGround Water1810370-08


Page 2 of 27





PROJECT NARRATIVE


No unusual observations noted.










Page 3 of 27












Prep Methods














Analytical Methods

1010A - Flashpoint

6010C - ICP

6020A - ICP MS





8011 - EDB/DBCP/TCP

8015C - GRO/DRO

8081B - Pesticides

8082A - PCB

8100M - TPH

8151A - Herbicides

8260B - VOA

8270D - SVOA


9014 - Cyanide

9038 - Sulfate

9040C - Aqueous pH



9056A - Anions (IC)

9060A - TOC


MADEP 04-1.1 - EPH

MADEP 04-2.1 - VPH




Page 4 of 27






MADEP RTN:





CAM IV A CAM VI A


CAM IV C






followed?























X

X X

X

X

X

X

X

X

XX

Page 5 of 27





Client Sample ID: T21B5-MW

Date Sampled: 10/10/18 10:00


Sample Matrix: Ground Water

Prepared: 10/12/18 14:56Analyst: CADInitial Volume: 1070

Final Volume: 1

Percent Solids: N/A


Units: ug/L

8082 Dissolved Polychlorinated Biphenyls (PCB)


8082AAroclor 1221 CJ8120210/13/18 13:59 1 ND (0.09)

8082AAroclor 1232 CJ8120210/13/18 13:59 1 ND (0.09)

8082AAroclor 1242 CJ8120210/13/18 13:59 1 ND (0.09)

8082AAroclor 1248 CJ8120210/13/18 13:59 1 ND (0.09)

8082AAroclor 1254 CJ8120210/13/18 13:59 1 ND (0.09)

8082AAroclor 1260 CJ8120210/13/18 13:59 1 ND (0.09)

8082AAroclor 1262 CJ8120210/13/18 13:59 1 ND (0.09)

8082AAroclor 1268 CJ8120210/13/18 13:59 1 ND (0.09)







Page 6 of 27






Date Sampled: 10/10/18 10:00




Percent Solids: N/A

Extraction Method: 5030B

Units: ug/L

8260B Volatile Organic Compounds




8260B1,3-Dichlorobenzene CJ81245C8J029010/12/18 14:08 1 3.2 (1.0)









Page 7 of 27






Date Sampled: 10/10/18 08:00




Final Volume: 1

Percent Solids: N/A


Units: ug/L



8082AAroclor 1221 CJ8120210/13/18 14:18 1 ND (0.10)

8082AAroclor 1232 CJ8120210/13/18 14:18 1 ND (0.10)

8082AAroclor 1242 CJ8120210/13/18 14:18 1 ND (0.10)

8082AAroclor 1248 CJ8120210/13/18 14:18 1 ND (0.10)

8082AAroclor 1254 CJ8120210/13/18 14:18 1 ND (0.10)

8082AAroclor 1260 CJ8120210/13/18 14:18 1 ND (0.10)

8082AAroclor 1262 CJ8120210/13/18 14:18 1 ND (0.10)

8082AAroclor 1268 CJ8120210/13/18 14:18 1 ND (0.10)







Page 8 of 27






Date Sampled: 10/10/18 08:00




Percent Solids: N/A


Units: ug/L














Page 9 of 27






Date Sampled: 10/10/18 10:05




Final Volume: 1

Percent Solids: N/A


Units: ug/L



8082AAroclor 1221 CJ8120210/13/18 14:37 1 ND (0.09)

8082AAroclor 1232 CJ8120210/13/18 14:37 1 ND (0.09)

8082AAroclor 1242 CJ8120210/13/18 14:37 1 ND (0.09)

8082AAroclor 1248 CJ8120210/13/18 14:37 1 ND (0.09)

8082AAroclor 1254 CJ8120210/13/18 14:37 1 ND (0.09)

8082AAroclor 1260 CJ8120210/13/18 14:37 1 ND (0.09)

8082AAroclor 1262 CJ8120210/13/18 14:37 1 ND (0.09)

8082AAroclor 1268 CJ8120210/13/18 14:37 1 ND (0.09)







Page 10 of 27






Date Sampled: 10/10/18 10:05




Percent Solids: N/A


Units: ug/L














Page 11 of 27





Client Sample ID: T21B8C-MW

Date Sampled: 10/10/18 10:55




Final Volume: 1

Percent Solids: N/A


Units: ug/L



8082AAroclor 1221 CJ8120210/13/18 14:56 1 ND (0.09)

8082AAroclor 1232 CJ8120210/13/18 14:56 1 ND (0.09)

8082AAroclor 1242 CJ8120210/13/18 14:56 1 ND (0.09)

8082AAroclor 1248 CJ8120210/13/18 14:56 1 ND (0.09)

8082AAroclor 1254 CJ8120210/13/18 14:56 1 ND (0.09)

8082AAroclor 1260 CJ8120210/13/18 14:56 1 ND (0.09)

8082AAroclor 1262 CJ8120210/13/18 14:56 1 ND (0.09)

8082AAroclor 1268 CJ8120210/13/18 14:56 1 ND (0.09)







Page 12 of 27





Client Sample ID: T21B8C-MW

Date Sampled: 10/10/18 10:55




Percent Solids: N/A


Units: ug/L


Analyte Results (MRL) MDL Method Limit DF Analyzed Sequence Batch8260B1,2,3-Trichlorobenzene CJ81245C8J029010/12/18 15:26 1 12.4 (1.0)

8260B1,2,4-Trichlorobenzene CJ81245C8J029010/12/18 15:26 1 32.6 (1.0)



8260B1,4-Dichlorobenzene CJ81245C8J029010/18/18 13:19 10 154 (10.0)

8260BChlorobenzene CJ81245C8J029010/12/18 15:26 1 17.5 (1.0)







Page 13 of 27






Date Sampled: 10/10/18 09:10




Final Volume: 1

Percent Solids: N/A


Units: ug/L



8082AAroclor 1221 CJ8120210/13/18 15:15 1 ND (0.09)

8082AAroclor 1232 CJ8120210/13/18 15:15 1 ND (0.09)

8082AAroclor 1242 CJ8120210/13/18 15:15 1 ND (0.09)

8082AAroclor 1248 CJ8120210/13/18 15:15 1 ND (0.09)

8082AAroclor 1254 CJ8120210/13/18 15:15 1 ND (0.09)

8082AAroclor 1260 CJ8120210/13/18 15:15 1 ND (0.09)

8082AAroclor 1262 CJ8120210/13/18 15:15 1 ND (0.09)

8082AAroclor 1268 CJ8120210/13/18 15:15 1 ND (0.09)







Page 14 of 27






Date Sampled: 10/10/18 09:10




Percent Solids: N/A


Units: ug/L



8260B1,2,4-Trichlorobenzene CJ81245C8J029010/12/18 15:52 1 1.2 (1.0)




8260BChlorobenzene CJ81245C8J029010/12/18 15:52 1 1.3 (1.0)







Page 15 of 27






Date Sampled: 10/10/18 08:55




Final Volume: 1

Percent Solids: N/A


Units: ug/L



8082AAroclor 1221 CJ8120210/13/18 15:34 1 ND (0.10)

8082AAroclor 1232 CJ8120210/13/18 15:34 1 ND (0.10)

8082AAroclor 1242 CJ8120210/13/18 15:34 1 ND (0.10)

8082AAroclor 1248 CJ8120210/13/18 15:34 1 ND (0.10)

8082AAroclor 1254 CJ8120210/13/18 15:34 1 ND (0.10)

8082AAroclor 1260 CJ8120210/13/18 15:34 1 ND (0.10)

8082AAroclor 1262 CJ8120210/13/18 15:34 1 ND (0.10)

8082AAroclor 1268 CJ8120210/13/18 15:34 1 ND (0.10)







Page 16 of 27






Date Sampled: 10/10/18 08:55




Percent Solids: N/A


Units: ug/L














Page 17 of 27





Client Sample ID: T2-MW

Date Sampled: 10/10/18 08:15




Final Volume: 1

Percent Solids: N/A


Units: ug/L



8082AAroclor 1221 CJ8120210/13/18 15:53 1 ND (0.09)

8082AAroclor 1232 CJ8120210/13/18 15:53 1 ND (0.09)

8082AAroclor 1242 CJ8120210/13/18 15:53 1 ND (0.09)

8082AAroclor 1248 CJ8120210/13/18 15:53 1 ND (0.09)

8082AAroclor 1254 CJ8120210/13/18 15:53 1 ND (0.09)

8082AAroclor 1260 CJ8120210/13/18 15:53 1 ND (0.09)

8082AAroclor 1262 CJ8120210/13/18 15:53 1 ND (0.09)

8082AAroclor 1268 CJ8120210/13/18 15:53 1 ND (0.09)







Page 18 of 27





Client Sample ID: T2-MW

Date Sampled: 10/10/18 08:15




Percent Solids: N/A


Units: ug/L














Page 19 of 27





Client Sample ID: TB

Date Sampled: 10/10/18 07:00




Percent Solids: N/A


Units: ug/L














Page 20 of 27







Spike

Level

Source

Result %REC

%REC

Limits RPD

RPD

Limit Qualifier


Batch CJ81202 - 3510C

Blank

0.10 ug/LAroclor 1016 ND

0.10 ug/LAroclor 1016 [2C] ND

















0.05000 30-150730.0364 ug/LSurrogate: Decachlorobiphenyl

0.05000 30-150760.0379 ug/LSurrogate: Decachlorobiphenyl [2C]

0.05000 30-150630.0316 ug/LSurrogate: Tetrachloro-m-xylene

0.05000 30-150780.0389 ug/LSurrogate: Tetrachloro-m-xylene [2C]

LCS

0.10 1.000 40-14084ug/LAroclor 1016 0.84

0.10 1.000 40-14082ug/LAroclor 1260 0.82





LCS Dup

0.10 1.000 2040-14095 13ug/LAroclor 1016 0.95

0.10 1.000 2040-14091 10ug/LAroclor 1260 0.91






Batch CJ81245 - 5030B

Blank

1.0 ug/L1,2,3-Trichlorobenzene ND


Page 21 of 27







Spike

Level

Source

Result %REC

%REC

Limits RPD

RPD

Limit Qualifier


Batch CJ81245 - 5030B

1.0 ug/L1,2,4-Trichlorobenzene ND

1.0 ug/L1,2-Dichlorobenzene ND



1.0 ug/LChlorobenzene ND

25.00 70-13010425.9 ug/LSurrogate: 1,2-Dichloroethane-d4

25.00 70-1308922.4 ug/LSurrogate: 4-Bromofluorobenzene

25.00 70-13010024.9 ug/LSurrogate: Dibromofluoromethane

25.00 70-1309924.7 ug/LSurrogate: Toluene-d8

LCS

10.00 70-13095ug/L1,2,3-Trichlorobenzene 9.5

10.00 70-13094ug/L1,2,4-Trichlorobenzene 9.4

10.00 70-13096ug/L1,2-Dichlorobenzene 9.6



10.00 70-13097ug/LChlorobenzene 9.7





LCS Dup

10.00 2570-13099 4ug/L1,2,3-Trichlorobenzene 9.9

10.00 2570-130100 6ug/L1,2,4-Trichlorobenzene 10.0

10.00 2570-130102 6ug/L1,2-Dichlorobenzene 10.2



10.00 2570-130105 8ug/LChlorobenzene 10.5






Page 22 of 27







D Diluted.



MDLMRL


I/VF/V








DL Detection Limit




Page 23 of 27






ENVIRONMENTAL



















Page 24 of 27

of 27


Client: --~G~ZA~-~N~o~rw=ood=, ~M~A~-~G~Z~N~M=M~-

Shipped/Oelivered Via: ----~E~S~S~C~o~u~r~ie~'----

1. Air bill manifest present? No Air No.: NA

2. Were custody seals present? No

3. Is radiation count <100 CPM? Yes

4. Is a Cooler Present? Yes Temp: 2.9 Iced with: Ice


11. Any Subcontracting needed? ESS Sample IDs:

Analysis: ____________ _ TAT: __________ _

13. Are the samples properly preserved? a. If metals preserved upon receipt: e~~'-----b. Low Level VOA vials frozen:

Sample Receiving Notes;

14. Was there a need to contact Project Manager? a. Was there a need to contact the client? Who was contacted?

Date: ____ _

Date: ____ _

ESS Project ID: ____ -,,;1.,,81;;0',;3cc7-"0,,.---___ _ Date Received: ____ ~10~/~1~1/~2~0~1"8 ____ _

Project Due Date: ----~1~0'=/1-;c8:"/2~0~18~----Days for Project: ______ 5_D~a~-----

6. Does COC match bottles?

7. Is COG complete and correct?

8. Were samples received intact?

9. Were labs informed about short holds & rushes?

10. were any analyses received outside of hold time?

12. Were VOAs received? a. Air bubbles in aqueous VOAs? b. Does methanol cover soil completely?

Time: Time: ___ _ By: By: ______ _

Time: ___ _ By: ______ _

Yes

Yes

Sample Container Proper Air

Sufficient Record pH (Cyanide and 608 Bubbles Container Type Preservative Number ID Container Present Volume Pesticides)

01 277027 Yes No Yes VOA Vial - HCI HCI 01 277028 Yes No Yes VOA Vial - HCI HCI 01 277029 Yes No Yes VOA Vial - HCI HCI 01 277042 Yes NA Yes 1 L Amber - Unpres NP 01 277043 Yes NA Yes 1 L Amber - Unpres NP 02 277024 Yes No Yes VOA Vial - HCI HCI 02 277025 Yes No Yes VOA Vial - HCI HCI 02 277026 Yes No Yes VOA Vial - HCI HCI 02 277040 Yes NA Yes 1 L Amber - Unpres NP 02 277041 Yes NA Yes 1 L Amber - Unpres NP 03 277021 Yes No Yes VOA Vial - HCI HCI 03 277022 Yes No Yes VOA Vial - HCI HCI 03 277023 Yes No Yes VOA Vial - HCI HCI 03 277038 Yes NA Yes 1 L Amber - Unpres NP 03 277039 Yes NA Yes 1 L Amber - Unpres NP 04 277018 Yes No Yes VOA Vial - HCI HCI 04 277019 Yes No Yes VOA Vial - HCI HCI 04 277020 Yes No Yes VOA Vial - HCI HCI 04 277036 Yes NA Yes 1 L Amber - Un pres NP 04 277037 Yes NA Yes 1 L Amber - Unpres NP 05 277015 Yes No Yes VOA Vial - HCI HCI 05 277016 Yes No Yes VOA Vial - HCI HCI 05 277017 Yes No Yes VOA Vial - HCI HCI 05 277034 Yes NA Yes 1 L Amber - Unpres NP

of 27


Client: GZA - Norwood, MA - GZA/MM ESS Project ID: 1810370 Date Received: 10/11/2018

05 277035 Yes NA Yes 1 L Amber - Unpres NP 06 277012 Yes No Yes VOA Vial - HCI HCI 06 277013 Yes No Yes VOA Vial - HCI HCI 06 277014 Yes No Yes VOA Vial - HCI HCI 06 277032 Yes NA Yes 1 L Amber - Unpres NP 06 277033 Yes NA Yes 1 L Amber - Unpres NP 07 277009 Yes No Yes VOA Vial - HCI HCI 07 277010 Yes No Yes VOA Vial - HCI HCI 07 277011 Yes No Yes VOA Vial - HCI HCI 07 277030 Yes NA Yes 1 L Amber - Unpres NP 07 277031 Yes NA Yes 1 L Amber - Unpres NP 08 277006 Yes No Yes VOA Vial - HCI HCI

2nd Review Are barcode labels on correct containers? ~No Are all necessary: ached? No

Completed By: Date & Time:

Reviewed By: Date & Time:

Delivered By.

of 27

ESS Laboratory CII-IIA!!>!l OIF CUSTODY ESS Lab# /~/()~}() .

Division of T!hielsch Engineering, Inc. Tum Time ..,, • J - Rush Reporting 16w-z.& ,

185 Francei Avenue, Cranston RI 02910 Regulatory State Lill . Limits /

Tel. (401) 461-7181 Fax (401) 461-4486 Is this project for any of the following?: Electonic ,LJ)lmlt Checker ~ndard Excel

www.esslab:9rato!;i.com QCTRCP ~AMCP ORGP Deliverables □Other (Please Specify-)

· (.." Company Name Project# A

Project Name _,, A /,.;-Uth_---, 6 - - .

__.,, / Contact Person Address , "' ~ - r 1_-.;..;,.,.,,, -· r.!£1 2.-l/Of , - . - d-1/e- "iii

.2:-

City State Zip Code PO# ., .

A,,.,,... ;vA- - C -z.._ <

Telephone Number FAX Number Email Address 1iOftJ,t .e,t._...Ul~ e; .• J. /""-> _...., i ~ •

ESS Lab ·Collection Collection V

ID Date Time Sample Type Sam pie Matrix Sample ID

I /0/10/,r;, /000 Glr-' -ru Bs- -M 1., I\< "'>< :..J I oBro . TZ-l/51. _,,,,, ')< '>< . '7 loo~ -1'2,;157 -Mi./ )< )<

L, /D:55 T Z-1 &<;fC---,,,,, f,v r><= )(.

s ' diro TZ-1 .RC, -JI.,? IA/ Y.. V .

(~ Of,5:) r 21. 81 u - ,, ,, )< )< .

'

I

7 o~,< 'TZ--MJ, / y.. )<

<?; , o--rov JI/-- -,j..? IY

Container Type: AC-p..jr Cassette AG-Amber Glass B-800 Bottle C-Cubltainer G-G!ass 0-0ther P-Poly S-Sterile VNial

Container Volume: 1-100 ml 2-2.5 gal 3-250 ml 4-300 ml 5-500 mL 6-1l 7-VOA 8-2 oz 9-4-oz 10-8 oz 11-other'

Preservation Code: 1-Non Prese1Ved 2-HCI 3-H2S04 4-HN03 5-NaOH 6-Methanol 7-Na2S203 s-znAce, NaOH 9-NH4Cl 10-01 H20 11-AseorblcAcid · 12-othe~

, Number of Containers per Sample:

La:o/ry Use Only Sampled by: J • ,~~J-"-....J-......J

.. ,

Cooler :Present: Comments: Please specify "Other" preservative and containers types in i:his space

Seals Intact: _5PbC,fJ>tE, c.,,~ ;=-o,e,. K6 /b../1-tH s (:; we-,ee r---,t,;VJ l"i'CTt!l"Udn tvrn+

Cooler T ~mperature: G- • "I ·c ;,::. c.. E- ice A-- tJ, J/f;,! RllYJ P,1.-71!f/..

Re!inqu_ished by: (Signature, Date & Time} Received By: (Signature, Date·& Time) Relinquished By: (Signature, Date & Time) / R< :eived By: (Signature, Date~ Time}

/J,,1 . ;_L !),~_, 10/10/t!J@., \":>°30 72~r1, ;of,,/,9 I"/ 3 S -;1/c\_O S:: 10/,J,g IR 'i l ' \I '- 1rl11ti :::lJr;q Relinquished by: (Signature, Date & Time) Received By: (Sit,nature, Date & Time) Relinquished By: (SignAture, Date~ Time) Keceived By: (Sidnafure, Date & Time)

lbouley

Typewritten Text

*

lbouley

Typewritten Text

*Chlorobenzene isomer list only per client 10/12/18 LLB

risk-based cleanup plan, phase 2 modification …

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