spc P1044 Final 100 pct rev1 Appendix E - Sediment Sampling results.pdf

eProject No. 1683671 P-1044 Submarine Pier 31 Extension Naval Submarine Base New London - Groton, CT

Appendix E

APPENDIX 'E'

Sediment Sampling and Testing Results

DISTRIBUTION STATEMENT: Further dissemination only as directed by NAV SUBASE New London, NAVFAC or higher DoD authority.

FY23 MCON P-1044

Submarine Pier 31 Extension, e-Projects #1683671

MID ATLANTIC

NAVSUBASE New London, CT

Pre-Dredge Sediment Sampling and Analysis Plan Report

September 23, 2021

A/E Contract No. N40085-20-D-0141

Prepared By

STANTEC CONSULTING SERVICES INC.

Submarine Pier 31 Extension NAV SUBASE New London, CT

Pre-Dredge Sediment Sampling and Analysis Plan Report eProjects #1683671 i

Table of Contents

1.0 INTRODUCTION

1.1 PROJECT DESCRIPTION

1.2 SAMPLING OBJECTIVES

2.0 SUMMARY OF APPROACH AND METHODS

2.1 SEDIMENT CHARACTERIZATION FOR CT DEEP 401 WATER QUALITY CERTIFICATION 2

3.0 RESULTS

3.1 DATA VALIDATION AND QUALITY

4.0 CONCLUSIONS

4.1 CT DEEP 401 WATER QUALITY CERTIFICATION CHARACTERIZATION

4.2 CAD CELL CAPPING

5.0 REFERENCES

LIST OF APPENDICES

Summary of Sediment Analytical Results ............................................... A.1 Core Depths and Survey Information ..................................................... B.1 Descriptions of Observed Sediment Horizons ........................................ C.1 Laboratory Reports .................................................................................. D.1 Vibracore Logs .......................................................................................... E.1 Sediment Sample Photographs ............................................................... F.1 Chain of Custody Forms ......................................................................... G.1 Data Usability Reports .............................................................................. H.1

Pre-Dredge Sediment Sampling

1.0 INTRODUCTION

1.1 PROJECT DESCRIPTION

Naval Submarine Base New London (SUBASE NLON) is in Groton, Connecticut, on the eastern shore of the Thames River (Figure 1). The current mission of the SUBASE NLON is to homeport SSN688 LOS ANGLES and SSN774 VIRGINIA (VA) Block I-IV submarines. Beginning in 2026, the SUBASE NLON will become home port to the new SSN774 (VA Class Block V) submarines, which are approximately 85 feet

(ft) longer than the current SSN774 (VA Class Block I-IV) submarines. The objective of the Pier 31 Extension Project (Project) is to construct an extension to the existing Pier 31 to safely moor two SSN774 (VA Class Block V) submarines and provide associated secured facilities for logistics and maintenance support for current and future operations. The Project will involve dredging along the existing pier, and the creation of a new associated turning basin to provide sufficient depth to moor and maneuver the new class of Block V submarines. The proposed 5,963-square-ft pier extension will provide berthing with adequate width to operate cranes supporting submarine maintenance operations on both sides of the pier simultaneously. The proposed pier length will be adequate for berthing with a minimum of 50 ft from the submarine to the marginal wharf at the quay wall and from the submarine to the end of the pier.

Submarine access to SUBASE NLON is via the Thames River upstream from Long Island Sound. There is a 250-ft-wide Federal Navigation Channel (Federal Channel) from the mouth of the Thames River extending to the north of SUBASE NLON. Adjacent to Pier 31, the design dredge depth of the Federal Channel is ‐36 ft Mean Lower Low Water (MLLW). A May 2018 bathymetric condition survey indicates several areas near Pier 31 where bottom depths are less than ‐36 ft MLLW. To allow for VA Class Block V submarine access, identified areas between the Federal Channel and SUBASE NLON piers are planned to be dredged to ‐36 ft MLLW as part of this Project. Across the river on the west side at the abandoned marina, the creation of a new turning basin is proposed. To create the turning basin, the abandoned marina will need to be dredged to -36 ft MLLW.

The proposed dredging for this Project would provide safe maneuvering and access for VA Class Block V submarines at Pier 31 by widening the Federal Channel for the new turning basin and by dredging along the existing pier and proposed pier extension. To allow for diver access to the submarines at all tides, dredging to -40 ft MLLW along a 60-ft width and along the full length of the berth on both sides of the pier is proposed (Figure 2).

Dredge volume calculations for this Project include an assumed dredge side-slope of two horizontal to one vertical. The volumes also account for a dredge tolerance (overdredge depth) of 2 ft. Based on these parameters, the total volume of material to be dredged is approximately 51,900 cubic yards (includes a 20% contingency factor). The contingency factor is included in the dredge volume calculation based on the age of the bathymetric survey data. Dredged material will be placed in an existing subaqueous Thames River Confined Aquatic Disposal (CAD) cell located in the Federal Channel, just west of the USS Nautilus Museum at Crystal Lake Road and south of SUBASE NLON (Figure 3). SUBASE NLON has established two CAD cells in the Thames River. CAD Cell 1 was established in 2006 and was utilized for disposal of material from the Piers 10, 12 and 31 Maintenance Projects and the Pier 6 Replacement

Pre-Dredge Sediment Sampling

Project. CAD Cell 2 was established in 2010 and was utilized for disposal of material from the Pier 32 Waterfront Maintenance Project. CAD Cell 2 (Thames River CAD Cell) will be utilized for the disposal of material from this Project.

1.2 SAMPLING OBJECTIVES

The goal of the 2021 sediment sampling and analysis program was to provide data to support federal and state permitting standards and disposal of dredge material with the following specific objectives:

• Collect the required number of samples for sediment physical and chemical testing to obtain a section 401 Water Quality Certification (401 WQC) and support Project environmental permitting standards for dredging and disposal into the Thames River CAD Cell.

• Compare the sediment being dredged from the marina (Figure 2) to the National Oceanic and Atmospheric Administration (NOAA) Effects Range-Low (ERL) and Effects Range-Median (ERM) values (Buchman 2008). The ERL and ERM measures are expressed as specific chemical concentrations of a toxic substance in sediment. The ERL indicates the concentration below which toxic effects are scarcely observed or predicted; the ERM indicates that concentration above which effects are generally or always observed. The results of these comparisons will be used to determine if the material dredged from the marina can serve as the final cap for the Thames River CAD Cell.

The final determination for the acceptability of the dredge material from the marina to serve as Thames River CAD Cell cap material will be made by the Connecticut Department of Energy and Environmental Protection (CT DEEP).

2.0 SUMMARY OF APPROACH AND METHODS

2.1 SEDIMENT CHARACTERIZATION FOR CT DEEP 401 WATER QUALITY

CERTIFICATION

Based on previous dredge experience at SUBASE NLON, it is assumed that material proposed for dredging from Pier 31 and the proposed turning basin would be suitable for placement in the Thames River CAD Cell. Since no material would be excavated to construct a new CAD cell, no testing of sediment in the CAD cell area is required. Sediment sampling and analysis for the Pier 31 extension and the proposed turning basin followed the protocols outlined in the Pier 31 Pre-Dredge Sediment Sampling and Analysis Plan (Stantec 2021) approved by CT DEEP on June 9, 2021. Sampling and analysis activities complied with the methodologies set forth in the United States Environmental Protection Agency and United States Army Corps of Engineers’ Regional Implementation Manual (USEPA/USACE 2004).

Sediment samples held for testing were stored in accordance with the requirements in Evaluation of Dredged Material Proposed for Ocean Disposal, Testing Manual (USEPA/USACE 1991) and consistent with the method preservation and holding time requirements.

The following sampling and analysis activities were completed to support the required Project environmental permitting standards for dredging and disposal into the Thames River CAD Cell and

Pre-Dredge Sediment Sampling determine if the sediment being dredged from the marina (Figure 2) can serve as the final cap for the Thames River CAD Cell. To address these objectives, the following sampling and analysis activities were completed:

• Six sample locations representative of the proposed dredge footprint and dredge depths at Pier 31 (Figure 2) were sampled.

• Two sample locations representative of the proposed dredge footprint and dredge depths at the marina/proposed turning basin (Figure 2) were sampled.

• One composite sample was collected from the mudline to the bottom of dredge depth from each location.

• Samples were analyzed for the chemical parameters according to the methods detailed in Table 1.

Table 1. Chemical and Physical Analyses

Parameter Analytical Method(s)

Physical Characterization of Sediments

Grain Size ASTM D422

Total Solids/Percent Moisture Plumb 1981; APHA 1995

Total Organic Carbon 9060A

Metals

Arsenic 6010B, 6020, 7060, 7061

Cadmium 6010B, 6020, 7060, 7061

Chromium 6010B, 6020, 7060, 7061

Copper 6010B, 6020, 7060, 7061

Lead 6010B, 6020, 7060, 7061

Mercury 7471

Nickel 6010B, 6020, 7060, 7061

Zinc 6010B, 6020, 7060, 7061

PAHs

Acenaphthene 8270C SIM

Acenaphthylene 8270C SIM

Anthracene 8270C SIM

Benzo(a)anthracene 8270C SIM

Benzo(a)pyrene 8270C SIM

Benzo(b)fluoranthene 8270C SIM

Benzo(k)fluoranthene 8270C SIM

Benzo(g,h,i)perylene 8270C SIM

Chrysene 8270C SIM

Pre-Dredge Sediment Sampling

Parameter Analytical Method(s)

Dibenzo(a,h)anthracene 8270C SIM

Fluoranthene 8270C SIM

Fluorene 8270C SIM

Indeno(1,2,3-c,d)pyrene 8270C SIM

Naphthalene 8270C SIM

Phenanthrene 8270C SIM

Pyrene 8270C SIM

Pesticides

Aldrin NOAA 1993; 8081B cis- and trans-Chlordane NOAA 1993; 8081B cis- and trans-Nonachlor NOAA 1993; 8081B

Alpha-BHC NOAA 1993; 8081B

Beta-BHC NOAA 1993; 8081B

Delta-BHC NOAA 1993; 8081B

Oxychlordane NOAA 1993; 8081B

4,4'-DDT, DDE, DDD NOAA 1993; 8081B

Dieldrin NOAA 1993; 8081B alpha- and beta-Endosulfan NOAA 1993; 8081B

Endrin NOAA 1993; 8081B

Heptachlor NOAA 1993; 8081B

Heptachlor epoxide NOAA 1993; 8081B

Hexachlorobenzene NOAA 1993; 8081B

Lindane NOAA 1993; 8081B

Methoxychlor NOAA 1993; 8081B

Toxaphene NOAA 1993; 8081B

PCB Congeners

8* (2,4' diCB) NOAA 1993; 8082A

18* (2,2',5 triCB) NOAA 1993; 8082A

28* (2,4,4' triCB) NOAA 1993; 8082A

44* (2,2',3,5' tetraCB) NOAA 1993; 8082A

49* (2,2',4',5 tetraCB) NOAA 1993; 8082A

52* (2,2',5,5' tetraCB) NOAA 1993; 8082A

66* (2,3',4,4' tetraCB) NOAA 1993; 8082A

87* (2,2',3,4,5' pentaCB) NOAA 1993; 8082A

101* (2,2',4,5,5' pentaCB) NOAA 1993; 8082A

Pre-Dredge Sediment Sampling

Parameter Analytical Method(s)

105* (2,3,3',4,4' pentaCB) NOAA 1993; 8082A

118* (2,3',4,4',5 pentaCB) NOAA 1993; 8082A

128* (2,2',3,3',4,4' hexaCB) NOAA 1993; 8082A

138* (2,2',3,4,4',5' hexaCB) NOAA 1993; 8082A

153* (2,2',4,4',5,5' hexaCB) NOAA 1993; 8082A

170* (2,2',3,3',4,4',5 heptaCB) NOAA 1993; 8082A

180* (2,2',3,4,4',5,5' heptaCB) NOAA 1993; 8082A

187* (2,2',3,4',5,5',6 heptaCB) NOAA 1993; 8082A

195* (2,2',3,3',4,4',5,6 octaCB) NOAA 1993; 8082A

206* (2,2',3,3',4,4',5,5',6 nonaCB) NOAA 1993; 8082A

209* (2,2',3,3',4,4',5,5',6,6' decaCB) NOAA 1993; 8082A

3.0 RESULTS

Analytical results for the 401 WQC and screening for suitability as CAD Cell capping material are provided in Appendix A and are summarized below.

Core depths and survey information are provided in Appendix B and descriptions of the observed sediment horizons are summarized in Appendix C. In general, sediments in the planned dredge prisms consist of black, brown, or olive gray silt with varying amounts of fine sand, clay, shell hash, and gravel. A hydrocarbon odor and sheen were observed on several samples (Appendix C).

Laboratory and field forms documenting laboratory results, field observations, and chain of custody forms are included in the following appendices:

• Appendix D: Laboratory Reports

• Appendix E: Vibracore Logs

• Appendix F: Sediment Sample Photographs

• Appendix G: Chain of Custody Forms

3.1 DATA VALIDATION AND QUALITY

Stantec performed data validation on the analytical results and determined that there were no issues that would significantly affect the usability of the data. The data validation was performed pursuant to the Quality Assurance/Quality Control Guidance for Sampling and Analysis of Sediments, Water and Tissue for Dredged Material Evaluations Chemical Evaluations Level 3 (USEPA/USACE 1995). Data usability reports are included in Appendix H.

Pre-Dredge Sediment Sampling

4.0 CONCLUSIONS

4.1 CT DEEP 401 WATER QUALITY CERTIFICATION CHARACTERIZATION

The majority of the contaminants of concern investigated were detected in each of the eight samples collected from the two Project dredge areas. The one the exception was organic pesticides, the majority of which (with the exception of DDT and its metabolites and chlordane) were not detected above the laboratory reporting limit in samples from adjacent to the pier or in the marina/proposed turning basin (Appendix A).

Based on the sediment sampling results and the presence of contaminants of concern, it is anticipated that CT DEEP will include standard narrative conditions for dredge and disposal in the 401 WQC. The narrative conditions are likely to include those that would control turbidity and suspended sediments due to construction activities such as the use of silt curtains.

4.2 CAD CELL CAPPING

CT DEEP does not have specific sediment screening criteria available to determine if the material dredged from the marina can serve as the final cap for the Thames River CAD Cell. Sediment chemistry data in the marina/proposed turning basin indicates the presence of polyaromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), metals, and pesticides. These analytes were detected at concentrations exceeding the NOAA ERL values but below the NOAA ERM values. Exceedances of the ERL values sometimes present in estuaries that have had anthropogenic activity. Based on these results, it is likely that the sediment from the marina is similar to other surface sediments in the surrounding estuary. CT DEEP will review the sediment sampling results and make the decision on suitability for the marina sediment as CAD cell capping material.

5.0 REFERENCES

APHA. 1995. Standard Methods for the Analysis of Water and Wastewater. 19th ed.

American Public Health Association, American Water Works Association, Water Pollution Control Federation, Washington, DC.

Buchman, M.F. 2008. NOAA Screening Quick Reference Tables, NOAA OR&R Report 08-1, Seattle WA, Office of Response and Restoration Division, National Oceanic and Atmospheric Administration, 34 pages.

National Oceanic and Atmospheric Administration (NOAA). 1993. Standard Analytical Procedures of the NOAA National Analytical Facility. NOAA Tech. Mem. NMFS F/NWC-92, 1986-89. National Status and Trends Program, National Oceanic and Atmospheric Administration, NOAA N/OMA32, 11400 Rockville Pike, Rockville, MD 20852. 3rd ed.

Pre-Dredge Sediment Sampling

Plumb, R.H., Jr. 1981. Procedure for handling and chemical analysis of sediment and water samples.

Tech. Rept. EPA/CE-81 -1 prepared by Great Lakes Laboratory, State University College at Buffalo, Buffalo, NY, for the U.S. Environmental Protection Agency/U.S. Army Corps of Engineers Technical Committee on Criteria for Dredged and Fill Material. Published by the U.S. Army Engineer Waterways Experiment Station, Vicksburg, MS.

Stantec Consulting Services Inc. (Stantec). 2021. Pier 31 Pre-Dredge Sediment Sampling and Analysis Plan, NAVSUBASE New London, Connecticut Submarine Pier 31 Extension.

United States Environmental Protection Agency and United States Army Corps of Engineers (USEPA/USACE). 1991. Evaluation of Dredged Material Proposed for Ocean Disposal, Testing Manual. EPA-503/8-91/001. February 1991.

USEPA/USACE. 1995. QA/QC Guidance for Sampling and Analysis of Sediments, Water and Tissue for Dredged Material Evaluations Chemical Evaluations. U.S. Environmental Protection Agency, Office of Water, Washington D.C. EPA 823-B-95-001.

USEPA/USACE. 2004. Regional Implementation Manual for the Evaluation of Dredged Material Proposed for Disposal in New England Waters April 2004. July 29, 2009. Errata available at http://www.nae.usace.army.mil/reg/Dredging/RIM/RIMErrata.pdf.

http://www.nae.usace.army.mil/reg/

Pre-Dredge Sediment Sampling

FIGURES

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SEDIMENT SAMPLING LOCATIONS

NO.

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1. ELEVATIONS SHOWN ON THE DREDGING PLAN ARE

REFERENCED TO MEAN LOWER LOW WATER (MLLW).

2. ALL SOUNDINGS WERE OBTAINED FROM HYDROGRAPHIC

SURVEY CONDUCTED IN MAY 2018 UNDER THE PIER 32

PROJECT.

LEGEND:

TURING BASIN AND PIER 31 EXTENSION

DREDGING AREAS.

D-07

D-08

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2006 Confined Aquatic Disposal (CAD) Cell 1

2010 Confined Aquatic Disposal (CAD) Cell 2

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224101253 Pier 31 Replacement Project Sediment Sampling and Analysis Plan Naval Submarine Base New London, Groton, CT

New London, Connecticut Prepared by PWB on 2021-03-04

TR by KWH on 2021-03-04 IR Review by PS on 2021-03-04

Thames River Confined Aquatic Disposal (CAD) Cell Locations Relative to the Project Area

Disclaimer: This document has been prepared based on information provided by others as cited in the Notes section. Stantec has not verified the accuracy and/or completeness of this information and shall not be responsible for any errors or omissions which may be incorporated herein as a result. Stantec assumes no responsibility for data supplied in electronic format, and the recipient accepts full responsibility for verifying the accuracy and completeness of the data.

Notes

1. Coordinate System: NAD 1983 StatePlane Connecticut FIPS 0600 Feet

2. Data Sources: NAVFAC, Stantec.

3. Background: Topographic base map provided by USGS National Map Web Mapping Service.

Uncasville Quadrange.

Figure No.

Title

Project Location

Client/Project

Legend Approximate Location of 2006 and 2010 Confined Aquatic Disposal (CAD) Cells

(At original document size of 8.5x11) 1:15,000 ($$¯0 1,250

Feet

Pre-Dredge Sediment Sampling

APPENDICES

Pre-Dredge Sediment Sampling

A.1

Summary of Sediment Analytical Results

Appendix A Summary of Sediment Analytical Results Pier 31 Thames River, Groton, CT Naval Facilities Engineering Systems Command

Sample Location D-01 D-02 D-03 D-04 D-05 D-06

Sample Date 15-Jun-21 15-Jun-21 6-Aug-21 6-Aug-21 15-Jun-21 15-Jun-21 6-Aug-21 6-Aug-21 15-Jun-21 15-Jun-21 Sample ID D-01-04 D-02-0-24 D-03-0-25 D-04-0-25 D-05-0-1 D-06-0-59 D-07-0-40 D-07-0-40-DUP D-08-0-51 D-08-0-51-DUP Sampling Company STANTEC STANTEC STANTEC STANTEC STANTEC STANTEC STANTEC STANTEC STANTEC STANTEC Laboratory ALPHA ALPHA ALPHA ALPHA ALPHA ALPHA ALPHA ALPHA ALPHA ALPHA Laboratory Work Order L2132428 L2132428 L2142394 L2142394 L2132428 L2132428 L2142394 L2142394 L2132428 L2132428 Laboratory Sample ID L2132428-01 L2132428-02 L2142394-05 L2142394-01 L2132428-03 L2132428-04 L2142394-02 L2142394-03 L2132428-05 L2132428-06

Sample Type Units ERLA ERMB Field Duplicate Field Duplicate

Moisture Content % n/v n/v 67.0 68.2 60.6 64.4 68.8 58.9 61.2 61.4 67.4 67.3 Total Organic Carbon - Mean of Duplicates % n/v n/v 3.84 4.36 4.10 4.96 4.72 3.98 3.98 4.34 3.99 3.92 Total Organic Carbon Rep.#1 % n/v n/v 3.63 4.38 3.76 4.98 4.76 4.00 4.04 4.54 3.98 3.88 Total Organic Carbon Rep.#2 % n/v n/v 4.05 4.35 4.44 4.94 4.69 3.96 3.93 4.15 4.00 3.97 Total Solids % n/v n/v 33.0 31.8 39.4 35.6 31.2 41.1 38.8 38.6 32.6 32.7

Percent Fine % n/v n/v 80.8 89.4 63.1 71.7 88.3 89.2 69.2 70.0 81.0 80.2 Coarse Sand % n/v n/v 0.800 0.900 1.40 1.10 0.400 0.500 0.600 0.900 1.10 1.90 Fine Sand % n/v n/v 6.60 4.00 27.8 13.8 6.20 5.40 17.7 16.4 8.40 7.70 Gravel % n/v n/v 1.80 0.100 U 0.400 0.100 U 0.100 U 0.100 0.100 0.300 1.50 0.100 U Medium Sand % n/v n/v 10.0 5.70 7.30 13.4 5.10 4.80 12.4 12.4 8.00 10.2

Arsenic mg/kg 8.2 70 17.6A 15.7A 7.55 12.4A 15.3A 7.84 9.61A 10.4A 14.5A 14.0A

Cadmium mg/kg 1.2 9.6 1.33A 1.10 0.373 1.06 J 1.05 0.372 0.711 0.864 0.914 0.935

Chromium mg/kg 81 370 103 J+A 87.9A 39.9 71.4 82.2A 36.6 57.2 64.0 79.1 75.6

Copper mg/kg 34 270 174A 118A 41.2A 195 J-A 90.9A 19.1 67.6A 144A 118A 112A

Lead mg/kg 46.7 218 137A 118A 28.7 78.3 JA 106A 15.9 49.5A 59.4A 98.7A 97.3A

Mercury mg/kg 0.15 0.71 0.624A 0.515A 0.110 0.454A 0.483A 0.040 0.319A 0.291A 0.490A 0.613A

Nickel mg/kg 20.9 51.6 38.6A 31.9A 18.8 22.9A 26.7A 19.3 24.5A 32.1A 27.9A 27.4A

Zinc mg/kg 150 410 240 J+A 203A 87.4 196A 168A 56.8 129 145 180A 178A

Aldrin µg/kg n/v n/v 0.592 U 0.619 U 0.320 U 0.352 U 0.625 U 0.452 U 0.332 U 0.336 U 0.587 U 0.583 U BHC, alpha- µg/kg n/v n/v 0.592 U 0.619 U 0.320 U 0.352 U 0.625 U 0.452 U 0.332 U 0.336 U 0.587 U 0.583 U BHC, beta- µg/kg n/v n/v 0.592 U 0.619 U 0.320 U 0.352 U 0.625 U 0.452 U 0.332 U 0.336 U 0.587 U 0.583 U BHC, delta- µg/kg n/v n/v 0.592 U 0.619 U 0.320 U 0.352 U 0.625 U 0.452 U 0.332 U 0.336 U 0.587 U 0.583 U Camphechlor (Toxaphene) µg/kg n/v n/v 29.7 U 31.1 U 16.1 U 17.6 U 31.4 U 22.7 U 16.7 U 16.8 U 29.5 U 29.3 U Chlordane, alpha- µg/kg n/v n/v 0.890 0.881 0.320 U 1.11 1.05 0.457 0.938 0.991 0.789 J 0.924 J Chlordane, trans- (gamma-Chlordane) µg/kg n/v n/v 4.30 J 3.67 I 0.320 U 5.39 J 2.74 J 0.495 J 4.14 J 4.12 J 2.67 3.02 J cis-Nonachlor µg/kg n/v n/v 0.592 U 0.619 U 0.320 U 0.352 U 0.625 U 0.452 U 0.332 U 0.336 U 0.587 U 0.583 U

DDD (p,p'-DDD) µg/kg 2 20 3.68A 2.88A 0.320 U 4.99 J+A 2.82A 1.15 J 3.28A 4.74A 3.21 JA 2.96A

DDE (p,p'-DDE) µg/kg 2.2 27 9.72 JA 5.56 JA 3.65 JA 11.1 J+A 4.89 JA 0.985 J 6.32A 6.80A 5.39 JA 5.13 JA

DDT (p,p'-DDT) µg/kg 1 7 2.10 JA 1.78 JA 0.320 U 1.85 JA 2.12 JA 0.452 U 1.23 JA 1.21 JA 1.37 JA 1.31 JA

Dieldrin µg/kg 0.02 8 0.982 JA 0.638 JA 0.320 U 2.24 JA 0.525 JA 0.197 JA 0.848 JA 1.77 JA 0.413 JA 0.479 JA

Endosulfan I µg/kg n/v n/v 0.592 U 0.619 U 0.320 U 0.352 U 0.625 U 0.452 U 0.332 U 0.336 U 0.587 U 0.583 U Endosulfan II µg/kg n/v n/v 0.489 J 0.687 J 0.320 U 0.352 U 0.419 J 0.091 J 0.332 U 0.336 U 0.992 J 0.674 J Endosulfan Sulfate µg/kg n/v n/v 0.592 U 0.619 U 0.320 U 0.352 U 0.625 U 0.452 U 0.332 U 0.336 U 0.587 U 0.583 U Endrin µg/kg n/v n/v 0.592 U 0.619 U 0.320 U 0.352 U 0.625 U 0.452 U 0.332 U 0.336 U 0.587 U 0.583 U Heptachlor µg/kg n/v n/v 0.592 U 0.619 U 0.320 U 0.352 U 0.625 U 0.452 U 0.332 U 0.336 U 0.587 U 0.583 U Heptachlor Epoxide µg/kg n/v n/v 1.18 U 1.24 U 0.640 U 0.703 U 1.25 U 0.904 U 0.664 U 0.671 U 1.17 U 1.17 U Hexachlorobenzene µg/kg n/v n/v 1.18 U 1.24 U 0.640 U 0.703 U 1.25 U 0.904 U 0.664 U 0.671 U 1.17 U 1.17 U Lindane (Hexachlorocyclohexane, gamma) µg/kg n/v n/v 0.592 U 0.619 U 0.320 U 0.352 U 0.625 U 0.452 U 0.332 U 0.336 U 0.587 U 0.583 U Methoxychlor (4,4'-Methoxychlor) µg/kg n/v n/v 0.592 U 0.619 U 0.320 U 0.352 U 0.625 U 0.452 U 0.332 U 0.336 U 0.587 U 0.583 U Oxychlordane µg/kg n/v n/v 1.18 U 1.24 U 0.640 U 0.703 U 1.25 U 0.904 U 0.664 U 0.671 U 1.17 U 1.17 U trans-Nonachlor µg/kg n/v n/v 2.81 J 3.12 0.320 U 3.05 3.01 0.372 J 2.62 2.54 2.73 J 2.56

2,4'-DiCB-(8)* µg/kg n/v n/v 2.99 J 3.45 J 1.56 0.703 U 2.93 J 4.52 U 0.664 U 0.671 U 4.27 J 3.78 J 2,2',5-TriCB-(18)* µg/kg n/v n/v 5.53 J 5.72 J 5.13 4.00 4.79 J 4.52 U 1.84 2.95 8.27 5.73 J 2,4,4'-TriCB-(28)* µg/kg n/v n/v 7.44 5.68 J 2.73 9.54 4.96 J 4.52 U 1.98 1.93 5.95 6.58 2,2',3,5'-TetraCB-(44)* µg/kg n/v n/v 9.54 3.89 J 1.53 3.91 4.83 J 4.52 U 1.95 3.75 5.43 J 5.46 J 2,2',4,5'-TetraCB-(49) µg/kg n/v n/v 9.10 5.32 J 1.47 4.21 4.31 J 4.52 U 2.32 2.12 5.82 J 5.80 J 2,2',5,5'-TetraCB-(52)* µg/kg n/v n/v 27.2 20.3 4.39 16.0 6.69 1.17 J 3.44 10.6 9.35 17.9 2,3',4,4'-TetraCB-(66)* µg/kg n/v n/v 12.0 7.65 1.68 5.30 5.51 J 4.52 U 3.70 3.57 7.84 7.50 2,2',3,4,5'-PentaCB-(87) µg/kg n/v n/v 5.54 J 2.92 J 0.486 J 2.09 2.76 J 4.52 U 1.38 1.45 4.07 J 2.43 J 2,2',4,5,5'-PentaCB-(101)* µg/kg n/v n/v 12.2 8.50 1.36 8.67 6.02 J 4.52 U 3.98 4.32 11.2 7.18 2,3,3',4,4'-PentaCB-(105)* µg/kg n/v n/v 4.57 J 6.19 U 0.640 U 3.45 J+ 6.25 U 4.52 U 1.77 1.56 5.87 U 2.52 J 2,3',4,4',5-PentaCB-(118)* µg/kg n/v n/v 10.6 8.02 1.91 6.52 6.47 4.52 U 4.76 4.86 10.6 7.88 2,2',3,3',4,4'-HexaCB-(128)* µg/kg n/v n/v 5.92 U 6.19 U 0.640 U 2.67 6.25 U 4.52 U 1.50 0.671 U 5.87 U 5.83 U 2,2',3,4,4',5'-HexaCB-(138)* µg/kg n/v n/v 13.8 10.1 1.95 9.42 7.77 4.52 U 5.44 4.97 11.6 7.78 2,2',4,4',5,5'-HexaCB-(153)* µg/kg n/v n/v 13.4 8.27 1.63 7.10 5.70 J 4.52 U 4.40 4.87 8.66 6.91 2,2',3,3',4,4',5-HeptaCB-(170)* µg/kg n/v n/v 5.92 U 4.16 J 0.908 3.10 6.25 U 4.52 U 2.36 2.18 5.87 U 4.93 J 2,2',3,4,4',5,5'-HeptaCB-(180)* µg/kg n/v n/v 7.75 6.42 1.42 5.16 4.74 J 4.52 U 3.74 3.19 5.76 J 5.21 J 2,2',3,4,4',5',6-HeptaCB-(183) µg/kg n/v n/v 3.33 J 1.64 J 0.468 J 1.20 6.25 U 4.52 U 0.891 0.962 5.87 U 2.63 J 2,2',3,4,4',6,6'-HeptaCB-(184) µg/kg n/v n/v 5.92 U 6.19 U 0.640 U 0.703 U 6.25 U 4.52 U 0.664 U 0.671 U 5.87 U 5.83 U 2,2',3,4',5,5',6-HeptaCB-(187)* µg/kg n/v n/v 5.98 6.39 1.04 3.12 J+ 6.25 U 4.52 U 3.17 3.50 6.35 5.06 J 2,2',3,3',4,4',5,6-OctaCB-(195)* µg/kg n/v n/v 5.92 U 6.19 U 0.640 U 0.703 U 6.25 U 4.52 U 0.664 U 1.02 5.87 U 5.83 U 2,2',3,3',4,4',5,5',6-NonaCB-(206)* µg/kg n/v n/v 5.92 U 6.19 U 0.880 3.18 6.25 U 4.52 U 2.30 2.36 5.87 U 5.50 J Decachlorobiphenyl (209)* µg/kg n/v n/v 5.96 6.19 U 0.782 3.27 6.25 U 4.52 U 2.59 2.48 5.87 U 5.83 U

Total PCB Congeners µg/kg 22.7 180 283.16AB 204.86AB 58.26A 189.13AB 130.65A 18.94 98.14A 116.53A 198.67AB 204.47AB

Acenaphthene µg/kg 16 500 231 J-A 50.4 JA 18.6A 50.8A 19.6 JA 45.2 U 98.9A 106A 58.4 JA 58.2 JA

Acenaphthylene µg/kg 44 640 231 J-A 129A 59.2A 222A 146A 16.1 J 193A 249A 114A 117A

Anthracene µg/kg 85.3 1,100 453 J-A 165A 52.0 238A 125A 13.0 J 235A 345A 217A 207A

Benzo(a)anthracene µg/kg 261 1,600 1,160 J-A 603A 193 1,290A 504A 45.0 J 936A 1,580A 891A 768A

Benzo(a)pyrene µg/kg 430 1,600 1,170 J-A 810A 227 819A 770A 61.4 790A 1,060A 913A 819A

Benzo(b)fluoranthene µg/kg n/v n/v 1,340 J- 959 344 1,330 812 66.8 1,170 1,540 1,050 879 Benzo(g,h,i)perylene µg/kg n/v n/v 792 J- 595 180 665 622 50.1 518 646 606 561 Benzo(k)fluoranthene µg/kg n/v n/v 1,120 J- 699 188 681 689 55.4 625 787 800 718

Chrysene µg/kg 384 2,800 1,870 J-A 739A 231 1,040A 691A 53.3 881A 1,780A 1,060A 906A

Dibenzo(a,h)anthracene µg/kg 63.4 260 166A 113A 54.9 151 JA 132A 10.6 J 162A 206A 136A 119A

Fluoranthene µg/kg 600 5,100 3,300 J-A 1,330A 692A 3,300 JA 1,090A 89.1 1,560A 1,720A 1,950A 2,030A

Fluorene µg/kg 19 540 208 J-A 65.6A 27.0A 96.0 JA 36.1 JA 5.50 J 134A 152A 73.0A 70.9A

Indeno(1,2,3-cd)pyrene µg/kg n/v n/v 736 J- 556 168 606 563 45.8 470 643 564 512

Naphthalene µg/kg 160 2,100 301 J-A 104 33.3 94.1 64.4 9.30 J 136 144 101 94.6

Phenanthrene µg/kg 240 1,500 1,010 J-A 436A 114 549A 384A 41.0 J 448A 604A 450A 442A

Pyrene µg/kg 665 2,600 4,030 J-AB 1,880A 998A 3,190 JAB 1,210A 104 3,970AB 4,200AB 2,440A 2,490A

Notes:

NOAA SQuiRTs National Oceanic and Atmospheric Administration, United States Department of Commerce

A Screening Quick Reference Table for Inorganics and Organics in Sediment (SQuiRTs), Effects Range-Low (ERL) B Screening Quick Reference Table for Inorganics and Organics in Sediment (SQuiRTs), Effects Range-Median (ERM)

6.5A Concentration exceeds the indicated standard.

6.5B Concentration exceeds the indicated standard.

15.2 Measured concentration did not exceed the indicated standard.

0.50 U Laboratory reporting limit was greater than the applicable standard.

0.03 U Analyte was not detected at a concentration greater than the laboratory reporting limit.

n/v No standard/guideline value.

I Value is EMPC (estimated maximum possible concentration).

J The reported result is an estimated value.

J- The analyte was positively identified; the associated numerical value is an estimated quantity that may be biased low.

J+ The analyte was positively identified; the associated numerical value is an estimated quantity that may be biased high.

Total PCBs Are to be estimated based on the following: Total = 2 X (sum of 18 NOAA congeners). For values below the MDL, use one half the MDL; for values between the MDL and the RL, use estimated values.

* 18 NOAA congeners

D-08

General Chemistry

Physical Properties

Metals

Pesticides

PCB Congeners

Semi-Volatile Organic Compounds

NOAA SQuiRTs

D-07

V:\01221\active\122140012_data_base_mgmt\Databases\224101253 - Pier 31 Thames River\Reports\20210915-224101253-Prelim_Sediment_Results-CL.xlsx 224101253

Pre-Dredge Sediment Sampling

B.1

Core Depths and Survey Information

Core Depths and Survey Information

Area Station Number Northing Easting

Mudline Elevation

(MLLW)

Target Sample Elevation (MLLW) (includes 2 ft of allowable overdredge Target Core Length (ft)

Actual Sample Elevation

(MLLW)

Actual Core

Length (ft) Notes

Pier 31 D-01 707104.6 1179927.9 -35.4 -40.0 4.6 -39.9 4.5 collected 6 ft core discarded bottom 1.5 ft

Pier 31 D-02 707032.6 1179796.2 -37.1 -40.0 2.9 -40.0 2.9 collected 4.4 ft core discarded bottom 1.5 ft

Pier 31 D-03 707253.2 1179904.3 -39.5 -40.0 0.5 -42.5 2.5

Pier 31 D-04 707161.6 1179754.6 -39.5 -40.0 0.5 42.5 2.5

Turning Basin D-05 707126.9 1179106.4 -35.1 -36.0 0.9 -36.1 1.0 four cores collected for volume

Turning Basin D-06 707395.0 1179052.7 -29.5 -36.0 6.5 -35.4 5.9

Pier 31 D-07 707306.7 1179986.2 -37.4 -40.0 2.6 40.1 2.7

Pier 31 D-08 707153.1 1179992.4 -35.6 -40.0 4.4 40.7 5.1

Pre-Dredge Sediment Sampling

C.1

Descriptions of Observed Sediment Horizons

Descriptions of Observed Sediment Horizons Station Depth (ft) Description Comment

D-01 0.0 4.5 soft, black, SILT, trace fine sand, trace gravel bottom 1.5 ft of core discarded, sample collected 2 ft into overdredge

D-02 0 2.9 soft, black, SILT, trace fine sand bottom 1.5 ft of core discarded, sample collected 2 ft into overdredge

0.0 1.5 soft, black, SILT, little fine sand, H2S odor

1.5 1.9 medium stiff, gray, SILT, some clay, trace fine sand, H2S odor

1.9 2.5 med stiff, brown, organic SILT, some clay, little fine sand, little organic matter

0.0 0.5 soft, black, SILT, some fine sand, little medium sand, trace gravel

0.5 1.75 soft, black, SILT, some fine sand

1.75 2.5 soft, gray, SILT, some fine sand

D-05 0.0 1.0 soft, black, SILT, trace fine sand, H2S odor

0.0 1.0 soft, black, SILT, trace fine sand, trace shell hash

1.0 5.9 soft, olive gray and brown, SILT, trace fine sand, trace shell hash

0.0 2.7 soft, black, SILT, some fine sand, trace medium sand, H2S odor only top 2.7 ft sent to the laboratory for analysis

2.7 3.5 medium stiff, brown, organic SILT, little fine sand, little clay, little organic matter

3.5 4.0 medium stiff, olive gray, CLAY, some silt, trace fine sand

D-08 0 5.1 soft, black, SILT, some fine sand, little medium sand, H2S odor

D-03

D-04

D-06

D-07

Pre-Dredge Sediment Sampling

D.1

Laboratory Reports

L2132428

Stantec

224101253

NEW LONDON SUB BASE PIER 31

Client:

Project Name:

Project Number:

08/11/21

320 Forbes Boulevard, Mansfield, MA 02048-1806

Lab Number:

Report Date:

508-822-9300 (Fax) 508-822-3288 800-624-9220 - www.alphalab.com

30 Park Drive

Topsham, ME 04086

Paul SokoloffATTN:

ANALYTICAL REPORT

Certifications & Approvals: MA (M-MA030), NH NELAP (2062), CT (PH-0141), DoD (L2474), FL (E87814), IL (200081), LA (85084), ME (MA00030), MD (350), NJ (MA015), NY (11627), NC (685), OH (CL106), PA (68-02089), RI (LAO00299), TX (T104704419), VT (VT-0015), VA (460194), WA (C954), US Army Corps of Engineers, USDA (Permit #P330-17-00150), USFWS (Permit #206964).

(207) 406-5475Phone:

The original project report/data package is held by Alpha Analytical. This report/data package is paginated and should be reproduced only in its entirety. Alpha Analytical holds no responsibility for results and/or data that are not consistent with the original.

Serial_No:08112116:38

L2132428-01

L2132428-02

L2132428-03

L2132428-04

L2132428-05

L2132428-06

L2132428-07

Alpha Sample ID

D-01-04

D-02-0-24

D-05-0-1

D-06-0-59

D-08-0-51

D-08-0-51-DUP

EB-01

Client ID

NEW LONDON, CT

NEW LONDON, CT

NEW LONDON, CT

NEW LONDON, CT

NEW LONDON, CT

NEW LONDON, CT

NEW LONDON, CT

Sample Location

NEW LONDON SUB BASE PIER 31

224101253

Project Name:

Project Number:

Lab Number:

Report Date:

L2132428 08/11/21

06/15/21 10:42

06/15/21 10:14

06/15/21 13:44

06/15/21 12:54

06/15/21 11:23

06/15/21 11:23

06/15/21 16:50

Collection Date/TimeMatrix Receive Date

SEDIMENT

SEDIMENT

SEDIMENT

SEDIMENT

SEDIMENT

SEDIMENT

WATER

06/15/21

06/15/21

06/15/21

06/15/21

06/15/21

06/15/21

06/15/21

NEW LONDON SUB BASE PIER 31

224101253

Project Name:

Project Number:

Lab Number:

Report Date:

L2132428

08/11/21

Case Narrative

The samples were received in accordance with the Chain of Custody and no significant deviations were encountered during the preparation or analysis unless otherwise noted. Sample Receipt, Container Information, and the Chain of Custody are located at the back of the report.

Results contained within this report relate only to the samples submitted under this Alpha Lab Number and meet NELAP requirements for all

NELAP accredited parameters unless otherwise noted in the following narrative. The data presented in this report is organized by parameter

(i.e. VOC, SVOC, etc.). Sample specific Quality Control data (i.e. Surrogate Spike Recovery) is reported at the end of the target analyte list for each individual sample, followed by the Laboratory Batch Quality Control at the end of each parameter. Tentatively Identified

Compounds (TICs), if requested, are reported for compounds identified to be present and are not part of the method/program Target

Compound List, even if only a subset of the TCL are being reported. If a sample was re-analyzed or re-extracted due to a required quality control corrective action and if both sets of data are reported, the Laboratory ID of the re-analysis or re-extraction is designated with an "R" or "RE", respectively.

When multiple Batch Quality Control elements are reported (e.g. more than one LCS), the associated samples for each element are noted in the grey shaded header line of each data table. Any Laboratory Batch, Sample Specific % recovery or RPD value that is outside the listed

Acceptance Criteria is bolded in the report. In reference to questions H (CAM) or 4 (RCP) when "NO" is checked, the performance criteria for CAM and RCP methods allow for some quality control failures to occur and still be within method compliance. In these instances, the specific failure is not narrated but noted in the associated QC Outlier Summary Report, located directly after the Case Narrative. QC information is also incorporated in the Data Usability Assessment table (Format 11) of our Data Merger tool, where it can be reviewed in conjunction with the sample result, associated regulatory criteria and any associated data usability implications.

Soil/sediments, solids and tissues are reported on a dry weight basis unless otherwise noted. Definitions of all data qualifiers and acronyms used in this report are provided in the Glossary located at the back of the report.

HOLD POLICY - For samples submitted on hold, Alpha's policy is to hold samples (with the exception of Air canisters) free of charge for 21 calendar days from the date the project is completed. After 21 calendar days, we will dispose of all samples submitted including those put on hold unless you have contacted your Alpha Project Manager and made arrangements for Alpha to continue to hold the samples. Air canisters will be disposed after 3 business days from the date the project is completed.

Please contact Project Management at 800-624-9220 with any questions.

Case Narrative (continued)

224101253

Project Name:

Project Number:

Lab Number:

Report Date:

L2132428

08/11/21

Report Submission

All non-detect (ND) or estimated concentrations (J-qualified) have been quantitated to the limit noted in the

MDL column.

Sample Receipt

L2132428 was frozen upon receipt in order to arrest the holding time.

Semivolatile Organics

L2132428-01D, -02D, -03D, -04D, -05D, and -06D: The sample has elevated detection limits due to the dilution required by the sample matrix.

WG1519552-5D, WG1519552-6D, and WG1519552-7D: The sample has elevated detection limits due to the dilution required by the sample matrix.

The WG1519552-6D/-7D MS/MSD recoveries, performed on L2132428-01, are outside the RIM acceptance criteria for several compounds. The unacceptable percent recoveries are attributed to the elevated concentrations of target compounds present in the native sample.

The WG1519552-5D Laboratory Duplicate RPDs for acenaphthylene (60%), phenanthrene (36%), chrysene

(53%), Cl4-BZ#44 (32%), performed on L2132428-01, are outside the RIM acceptance criteria. The elevated

RPDs have been attributed to the non-homogeneous nature of the native sample.

The WG1519552-4D Standard Reference Material is outside the QC limits for Cl6-BZ#128 (142%).

Pesticides

L2132428-01, -02, -03, -04, -05, -06: The samples have elevated detection limits above RIM required RLs due to high moisture content.

L2132428-07: The surrogate recoveries were outside the RIM acceptance criteria for dbob (28%/29%);

however, the criteria were achieved upon re-extraction outside of hold time. The results of both extractions are reported; however, all associated compounds are considered to have a potential bias.

The WG1515204-1 Method Blank, associated with L2132428-07, has concentrations above the reporting

224101253

Project Name:

Project Number:

Lab Number:

Report Date:

L2132428

08/11/21 limits for several compounds. The sample was re-extracted with the method required holding time exceeded and both the sample and method blank were non-detect for these target compounds. The results of both extractions are reported, along with the re-extract QC. The original sample result is reported with a "B" qualifier.

The WG1515204-2/-3 LCS/LCSD recoveries, associated with L2132428-07, are outside the RIM criteria for hexachlorobenzene (44%/39%), heptachlor (46%/40%) and aldrin (45%/39%), but are within the lab SOP limits.

No further action was required. Note that the re-extraction LCS/LCSD (WG1520356-2/-3), meet the RIM criteria.

The WG1519537-2/-3 LCS/LCSD RPD, associated with L2132428-01 through -06, is outside the RIM acceptance criteria for aldrin (32%).

The WG1519537-4 Laboratory Duplicate RPD for 4,4'-DDD (58%), performed on L2132428-01, is outside the acceptance criteria. The elevated RPD has been attributed to the non-homogeneous nature of the native sample.

The WG1519537-7D Standard Reference Material is outside the QC limits for trans-nonachlor (488%).

Total Metals

L2132428-01, -02, -03, -04, -05, -06: The samples have elevated detection limits above RIM required RLs due to high moisture content.

The WG1526862-3 MS recovery, performed on L2132428-01, is outside the acceptance criteria for chromium

(135%). A post digestion spike was performed and was within acceptance criteria.

The WG1526862-3/-4 MS/MSD recoveries, performed on L2132428-01, are outside the acceptance criteria for zinc (146%/129%). A post digestion spike was performed and yielded unacceptable recoveries for zinc

(141%). The serial dilution recovery was acceptable; therefore, the matrix test passed for the sample matrix.

Total Mercury

L2132428-07 was analyzed with the method required holding time exceeded.

The WG1526856-3/-4 MS/MSD RPD for mercury (25%), performed on L2132428-01, is above the acceptance

224101253

Project Name:

Project Number:

Lab Number:

Report Date:

L2132428

08/11/21 criteria.

Total Organic Carbon

L2132428-07: The Equipment Blank has a concentration above the reporting limit for Total Organic Carbon.

The results were confirmed.

The WG1522322-4/-5 MS/MSD recoveries (Rep1 - 200%) and (Rep2 - 68%) performed on L2132428-01, are outside the 75-125% acceptance criteria, possibly due to sample matrix. The associated SRM recoveries are within criteria, indicating the sample batch was in control, and all sample results were accepted.

RIM Grain Size Analysis

The WG1519900-1 Laboratory Duplicate RPD for % coarse sand (81%), % medium sand (35%), performed on

L2132428-01, is outside the acceptance criteria. The elevated RPD has been attributed to the non-homogeneous nature of the native sample.

I, the undersigned, attest under the pains and penalties of perjury that, to the best of my knowledge and belief and based upon my personal inquiry of those responsible for providing the information contained in this analytical report, such information is accurate and complete. This certificate of analysis is not complete unless this page accompanies any and all pages of this report.

Authorized Signature:

Title: Technical Director/Representative Date: 08/11/21

ORGANICS

SEMIVOLATILES

FF

Naphthalene

Acenaphthylene

Acenaphthene

Fluorene

Phenanthrene

Anthracene

Fluoranthene

Pyrene

Benz(a)anthracene

Chrysene

Benzo(b)fluoranthene

Benzo(k)fluoranthene

Benzo(a)pyrene

Indeno(1,2,3-cd)Pyrene

Dibenz(a,h)anthracene

Benzo(ghi)perylene

Cl2-BZ#8

Cl3-BZ#18

Cl3-BZ#28

Cl4-BZ#44

Cl4-BZ#49

Cl4-BZ#52

Cl4-BZ#66

Cl5-BZ#87

Cl5-BZ#101

Cl5-BZ#105

Cl5-BZ#118

Cl6-BZ#128

Parameter Result

J

J

J

J

Dilution Factor

2.99

5.53

7.44

9.54

9.10

27.2

12.0

5.54

12.2

4.57

10.6

ND

ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg

Qualifier Units RL

RIM PAHs/PCB Congeners by GC/MS - Mansfield Lab

SAMPLE RESULTS

Project Name:

Project Number:

Lab Number:

Report Date:

NEW LONDON SUB BASE PIER 31

224101253

L2132428

59.2

59.2

59.2

59.2

59.2

59.2

59.2

59.2

59.2

59.2

59.2

59.2

59.2

59.2

59.2

59.2

5.92

5.92

5.92

5.92

5.92

5.92

5.92

5.92

5.92

5.92

5.92

5.92

08/11/21

D-01-04Client ID:

06/15/21 10:42Date Collected:

06/15/21Date Received:

NEW LONDON, CTSample Location:

L2132428-01Lab ID:

Field Prep: Not Specified

D

Matrix: Sediment Extraction Method:

Cleanup Method:

Analytical Method:

Analytical Date:

Analyst:

105,8270D-SIM/680(M)

07/13/21 17:07

GP

EPA 3570

EPA 3630

Extraction Date: 07/01/21 20:57

Cleanup Date: 07/07/21 33%Percent Solids:

MDL

9.76

6.98

11.4

6.33

12.4

7.58

11.2

16.4

14.2

13.8

19.7

9.06

26.4

14.8

7.34

6.33

1.17

0.852

1.45

1.62

1.58

0.900

0.846

0.686

1.38

1.24

1.31

1.54

Sample Depth:

Cl6-BZ#138

Cl6-BZ#153

Cl7-BZ#170

Cl7-BZ#180

Cl7-BZ#183

Cl7-BZ#184

Cl7-BZ#187

Cl8-BZ#195

Cl9-BZ#206

Cl10-BZ#209

Parameter Result

J

Dilution Factor

13.8

13.4

ND

7.75

3.33

ND

5.98

ND

ND

5.96 ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg

Qualifier Units RL

RIM PAHs/PCB Congeners by GC/MS - Mansfield Lab

SAMPLE RESULTS

Project Name:

Project Number:

Lab Number:

Report Date:

NEW LONDON SUB BASE PIER 31

224101253

L2132428

5.92

5.92

5.92

5.92

5.92

5.92

5.92

5.92

5.92

5.92

2-Methylnaphthalene-d10

Pyrene-d10

Benzo(b)fluoranthene-d12

DBOB

BZ 198

30-150

30-150

30-150

30-150

30-150

Acceptance CriteriaSurrogate % Recovery Qualifier

08/11/21

D-01-04Client ID:

06/15/21 10:42Date Collected:

06/15/21Date Received:

NEW LONDON, CTSample Location:

L2132428-01Lab ID:

Field Prep: Not Specified

D

MDL

0.988

2.06

0.758

0.775

0.417

0.852

1.11

1.46

1.48

1.70

Sample Depth:

Acenaphthylene

Acenaphthene

Fluorene

Phenanthrene

Anthracene

Fluoranthene

Pyrene

Benz(a)anthracene

Chrysene

Benzo(b)fluoranthene

Benzo(k)fluoranthene

Benzo(a)pyrene

Indeno(1,2,3-cd)Pyrene

Dibenz(a,h)anthracene

Benzo(ghi)perylene

Cl2-BZ#8

Cl3-BZ#18

Cl3-BZ#28

Cl4-BZ#44

Cl4-BZ#49

Cl4-BZ#52

Cl4-BZ#66

Cl5-BZ#87

Cl5-BZ#101

Cl5-BZ#105

Cl5-BZ#118

Cl6-BZ#128

Parameter Result

J

J

J

J

J

J

J

Dilution Factor

50.4

65.6

3.45

5.72

5.68

3.89

5.32

20.3

7.65

2.92

8.50

ND

8.02

ND

ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg

Qualifier Units RL

RIM PAHs/PCB Congeners by GC/MS - Mansfield Lab

SAMPLE RESULTS

Project Name:

Project Number:

Lab Number:

Report Date:

NEW LONDON SUB BASE PIER 31

224101253

L2132428

61.9

61.9

61.9

61.9

61.9

61.9

61.9

61.9

61.9

61.9

61.9

61.9

61.9

61.9

61.9

61.9

6.19

6.19

6.19

6.19

6.19

6.19

6.19

6.19

6.19

6.19

6.19

6.19

08/11/21

D-02-0-24Client ID:

06/15/21 10:14Date Collected:

06/15/21Date Received:

NEW LONDON, CTSample Location:

L2132428-02Lab ID:

Field Prep: Not Specified

D

Matrix: Sediment Extraction Method:

Cleanup Method:

Analytical Method:

Analytical Date:

Analyst:

105,8270D-SIM/680(M)

07/13/21 19:19

GP

EPA 3570

EPA 3630

Extraction Date: 07/01/21 20:57

Cleanup Date: 07/07/21 32%Percent Solids:

MDL

10.2

7.30

11.9

6.62

13.0

7.92

11.7

17.2

14.8

14.4

20.6

9.47

27.6

15.5

7.68

6.62

1.22

0.891

1.52

1.69

1.65

0.941

0.885

0.718

1.44

1.29

1.37

1.62

Sample Depth:

Cl7-BZ#170

Cl7-BZ#180

Cl7-BZ#183

Cl7-BZ#184

Cl7-BZ#187

Cl8-BZ#195

Cl9-BZ#206

Cl10-BZ#209

Parameter Result

J

J

Dilution Factor

10.1

8.27

4.16

6.42

1.64

ND

6.39

ND

ND

ND

ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg

Qualifier Units RL

RIM PAHs/PCB Congeners by GC/MS - Mansfield Lab

SAMPLE RESULTS

Project Name:

Project Number:

Lab Number:

Report Date:

NEW LONDON SUB BASE PIER 31

224101253

L2132428

6.19

6.19

6.19

6.19

6.19

6.19

6.19

6.19

6.19

6.19

2-Methylnaphthalene-d10

Pyrene-d10

Benzo(b)fluoranthene-d12

DBOB

BZ 198

30-150

30-150

30-150

30-150

30-150

Acceptance CriteriaSurrogate % Recovery Qualifier

08/11/21

D-02-0-24Client ID:

06/15/21 10:14Date Collected:

06/15/21Date Received:

NEW LONDON, CTSample Location:

L2132428-02Lab ID:

Field Prep: Not Specified

D

MDL

1.03

2.15

0.792

0.811

0.436

0.891

1.16

1.52

1.55

1.78

Sample Depth:

Acenaphthene

Fluorene

Phenanthrene

Anthracene

Fluoranthene

Pyrene

Benz(a)anthracene

Chrysene

Benzo(b)fluoranthene

Benzo(k)fluoranthene

Benzo(a)pyrene

Indeno(1,2,3-cd)Pyrene

Dibenz(a,h)anthracene

Benzo(ghi)perylene

Cl2-BZ#8

Cl3-BZ#18

Cl3-BZ#28

Cl4-BZ#44

Cl4-BZ#49

Cl4-BZ#52

Cl4-BZ#66

Cl5-BZ#87

Cl5-BZ#101

Cl5-BZ#105

Cl5-BZ#118

Cl6-BZ#128

Parameter Result

J

J

J

J

J

J

J

J

J

J

Dilution Factor

64.4

19.6

36.1

2.93

4.79

4.96

4.83

4.31

6.69

5.51

2.76

6.02

ND

6.47

ND

ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg

Qualifier Units RL

RIM PAHs/PCB Congeners by GC/MS - Mansfield Lab

SAMPLE RESULTS

Project Name:

Project Number:

Lab Number:

Report Date:

NEW LONDON SUB BASE PIER 31

224101253

L2132428

62.5

62.5

62.5

62.5

62.5

62.5

62.5

62.5

62.5

62.5

62.5

62.5

62.5

62.5

62.5

62.5

6.25

6.25

6.25

6.25

6.25

6.25

6.25

6.25

6.25

6.25

6.25

6.25

08/11/21

D-05-0-1Client ID:

06/15/21 13:44Date Collected:

06/15/21Date Received:

NEW LONDON, CTSample Location:

L2132428-03Lab ID:

Field Prep: Not Specified

D

Matrix: Sediment Extraction Method:

Cleanup Method:

Analytical Method:

Analytical Date:

Analyst:

105,8270D-SIM/680(M)

07/13/21 19:52

GP

EPA 3570

EPA 3630

Extraction Date: 07/01/21 20:57

Cleanup Date: 07/07/21 31%Percent Solids:

MDL

10.3

7.38

12.0

6.69

13.1

8.00

11.8

17.4

15.0

14.6

20.8

9.57

27.9

15.7

7.75

6.69

1.24

0.900

1.53

1.71

1.67

0.950

0.894

0.725

1.46

1.31

1.38

1.63

Sample Depth:

Cl7-BZ#170

Cl7-BZ#180

Cl7-BZ#183

Cl7-BZ#184

Cl7-BZ#187

Cl8-BZ#195

Cl9-BZ#206

Cl10-BZ#209

Parameter Result

J

J

Dilution Factor

7.77

5.70

ND

4.74

ND

ND

ND

ND

ND

ND

ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg

Qualifier Units RL

RIM PAHs/PCB Congeners by GC/MS - Mansfield Lab

SAMPLE RESULTS

Project Name:

Project Number:

Lab Number:

Report Date:

NEW LONDON SUB BASE PIER 31

224101253

L2132428

6.25

6.25

6.25

6.25

6.25

6.25

6.25

6.25

6.25

6.25

2-Methylnaphthalene-d10

Pyrene-d10

Benzo(b)fluoranthene-d12

DBOB

BZ 198

30-150

30-150

30-150

30-150

30-150

Acceptance CriteriaSurrogate % Recovery Qualifier

08/11/21

D-05-0-1Client ID:

06/15/21 13:44Date Collected:

06/15/21Date Received:

NEW LONDON, CTSample Location:

L2132428-03Lab ID:

Field Prep: Not Specified

D

MDL

1.04

2.18

0.800

0.819

0.441

0.900

1.18

1.54

1.57

1.80

Sample Depth:

Acenaphthene

Fluorene

Phenanthrene

Anthracene

Fluoranthene

Pyrene

Benz(a)anthracene

Chrysene

Benzo(b)fluoranthene

Benzo(k)fluoranthene

Benzo(a)pyrene

Indeno(1,2,3-cd)Pyrene

Dibenz(a,h)anthracene

Benzo(ghi)perylene

Cl2-BZ#8

Cl3-BZ#18

Cl3-BZ#28

Cl4-BZ#44

Cl4-BZ#49

Cl4-BZ#52

Cl4-BZ#66

Cl5-BZ#87

Cl5-BZ#101

Cl5-BZ#105

Cl5-BZ#118

Cl6-BZ#128

Parameter Result

J

J

J

J

J

J

J

J

Dilution Factor

9.30

16.1

ND

5.50

41.0

13.0

89.1

45.0

53.3

66.8

55.4

61.4

45.8

10.6

50.1

ND

ND

ND

ND

ND

1.17

ND

ND

ND

ND

ND

ND

ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg

Qualifier Units RL

RIM PAHs/PCB Congeners by GC/MS - Mansfield Lab

SAMPLE RESULTS

Project Name:

Project Number:

Lab Number:

Report Date:

NEW LONDON SUB BASE PIER 31

224101253

L2132428

45.2

45.2

45.2

45.2

45.2

45.2

45.2

45.2

45.2

45.2

45.2

45.2

45.2

45.2

45.2

45.2

4.52

4.52

4.52

4.52

4.52

4.52

4.52

4.52

4.52

4.52

4.52

4.52

08/11/21

D-06-0-59Client ID:

06/15/21 12:54Date Collected:

06/15/21Date Received:

NEW LONDON, CTSample Location:

L2132428-04Lab ID:

Field Prep: Not Specified

D

Matrix: Sediment Extraction Method:

Cleanup Method:

Analytical Method:

Analytical Date:

Analyst:

105,8270D-SIM/680(M)

07/13/21 20:25

GP

EPA 3570

EPA 3630

Extraction Date: 07/01/21 20:57

Cleanup Date: 07/07/21 41%Percent Solids:

MDL

7.46

5.34

8.68

4.84

9.50

5.79

8.55

12.6

10.8

10.5

15.0

6.92

20.2

11.4

5.61

4.84

0.895

0.651

1.11

1.23

1.21

0.687

0.647

0.525

1.05

0.945

0.999

1.18

Sample Depth:

Cl7-BZ#170

Cl7-BZ#180

Cl7-BZ#183

Cl7-BZ#184

Cl7-BZ#187

Cl8-BZ#195

Cl9-BZ#206

Cl10-BZ#209

Parameter Result Dilution Factor

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg ug/kg

Qualifier Units RL

RIM PAHs/PCB Congeners by GC/MS - Mansfield Lab

SAMPLE RESULTS

Project Name:

Project Number:

Lab Number:

Report Date:

NEW LONDON SUB BASE PIER 31

224101253

L2132428

4.52

4.52

4.52

4.52

4.52

4.52

4.52

4.52

4.52

4.52

2-Methylnaphthalene-d10

Pyrene-d10

Benzo(b)fluoranthene-d12

DBOB

BZ 198

30-150

30-150

30-150

30-150

30-150

Acceptance CriteriaSurrogate % Recovery Qualifier

08/11/21

D-06-0-59Clie…