Amend0009_Attachment_1_-_Contract_Plating_Phase_II_Environmental_Site_Assessment_Summary.pdf

MEMORANDUM Tighe&Bond

Contract Plating Phase II Environmental Site Assessment Summary

TO: Daniel Keffe, US EPA

FROM: Harley Langford, LEP, Tighe & Bond

COPY: Henry Phillips, USACOE

Christina Senft-Batoh, Town of Stratford

DATE: October 5, 2018

The following is a summary of the findings of the Phase II Environmental Site Assessment (ESA) completed at the Former Contract Plating site. This Memorandum and the attached data tables and figures are intended to provide a general overview of the environmental condition of on-site soil and groundwater.

Contract Plating Phase II Environmental Site Assessment Summary

Tighe & Bond has completed a Phase II ESA for the former Contract Plating Facility located at

540 Longbrook Avenue in Stratford, Connecticut. The results of the Phase II ESA activities were used to develop a conceptual site model and to evaluate if releases of COCs have occurred to the environment at the site’s AOCs. Additionally, Phase III ESA activities were conducted at AOC-1 to assess data gaps identified in the 2014 Phase II ESA and to further define the nature and extent of soil and groundwater contamination in the vicinity of the pre-

RCRA lagoons. The Phase II and Phase III ESA activities were conducted to progress the site towards closure of it’s RCRA Corrective Action Program cleanup obligations and to help facilitate the possible redevelopment of the site.

The site is located within a mixed commercial and residential area and is currently owned by the Town of Stratford. The site encompasses approximately 10.5 acres of land and was most recently improved with a main plating building, anodizing building, industrial warehouse building, waste water treatment building, and a transformer house. All site buildings were demolished down to their slabs in 2015/2016.

The site was originally developed in approximately 1918 by Bridgeport Motor Company, which operated as a motor truck assembly and repair business. Contract Plating reportedly operated at the site from approximately 1936 to 1995 and used the property for metal finishing, electroplating and anodizing purposes. Most recently, the site exterior has been used by Good Earth Tree Care, a tree services company, which mulches yard clippings and trees on site as well as producing compost materials.

From 1936 to 1976 (pre-RCRA), the Contract Plating Company discharged metal plating wastes through earthen trenches into two unlined lagoons located at the northeastern portion of the site. After use of the lagoons was discontinued and until 1985, four sand sludge drying beds and a waste impoundment lined with asphalt were used to manage wastes. After 1985, treated wastewaters were directed to the Town of Stratford POTW. The sand drying beds and asphalt lined waste impoundment were closed and capped as a RCRA-regulated landfill in the early 1990s. The pre-RCRA lagoons; however, have not been remediated or capped other than covering the ground surface with soil.

Throughout Contract Plating’s tenure at the site, numerous consent orders, notices of violations and deficiencies were issued by the CTDEEP. Several previous environmental assessment documents were also prepared for the site between 1972 and 2012.

Information from previous site assessments and this Phase II ESA are briefly summarized below and are discussed in greater detail in the CSM provided in Section 10 of the Phase II

ESA.

MEMO Tighe&Bond

-2-

Phase I ESA: Numerous previous environmental documents were prepared for the site between 1972 and 2013, including a Phase I ESA prepared by HRP Associates in August 2012.

Findings from the Phase I ESA were used to identify 36 AOCs which are listed in Section 2.4 of this report and further detailed in the CSM.

Limited Phase II ESA 2013: Tighe & Bond conducted a Limited Phase II ESA in August and September 2013 for the purpose of identifying the general presence and preliminary extent of environmental impacts associated with the two pre-RCRA unlined lagoons at AOC-1.

The Limited Phase II ESA included 16 soil borings located in and around AOC-1. Additionally, three test pits were excavated to a depth of six to nine feet below grade. Twenty-one soil samples were collected from the borings and test pits, which were analyzed for ETPH, VOCs, PAHs, RCP metals, Asbestos, Cyanide, and PCBs. Additionally, groundwater samples were collected from monitoring wells MW-9 and MW-Z for analysis of VOCs and RCRA-8 metals.

Multiple metals were reported at concentrations above the RES and/or I/C DEC in one or more samples. Select metals were also analyzed for leachability using SPLP, cadmium and nickel were reported at concentrations above the GB PMC. PCBs and or cyanide were also reported at concentrations above RES DEC in four samples.

Two groundwater samples, MW-Z, and MW-9, were collected during the 2013 Phase II ESA.

Samples from both wells were reported to contain arsenic, copper, manganese, nickel, and/or zinc at concentrations above the SWPC.

Phase II ESA 2016: Phase II ESA field activities were completed by Tighe & Bond in December 2016 and January 2017 to assess potential release conditions associated with AOCs identified in the 2012 and other AOCs identified by Tighe & Bond during subsequent site assessment work.

Soil and/or groundwater conditions were assessed at AOCs 2 through 36 during the Phase II

ESA. Additional delineation of soil and groundwater contamination was also completed at

AOC-1.

Release conditions were identified in soil and/or groundwater at several AOCs. COCs were reported at concentrations above applicable RSR criteria at the AOCs listed below. Additional assessment is required to delineate the extent of soil and groundwater impacts above applicable RSR cleanup criteria.

• AOC-1 Pre-RCRA Unlined Lagoons

• AOC-2 RCRA Capped Landfill

• AOC-3/7 Former Barrel/Hazardous Waste Barrel Storage Area

• AOC-4/5 Former ASTs and USTs East of Plating Building

• AOC-6 Former Sawdust Tumblers

• AOC-9 Loading Docks and Shipping/Receiving

• AOC-13a Plating Building (Main Shop)

• AOC-17 Transformer House

• AOC-18/19/20 Former Filter Press/Wastewater Treatment USTs, ASTs, and Piping

• AOC-21 Former Gas Pump

• AOC-22 Former UST Farm

• AOC-24 Chemical Storage Warehouse

• AOC-31 Urban Fill

• AOC-33 Generator Room

• AOC-34 Hazardous Building Materials

The Phase II ESA did not identify significant releases in soil at the following AOCs; however, data gaps including the extent of contaminated fill materials were identified and additional investigations were required during the Phase III ESA.

MEMO Tighe&Bond

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• AOC-8 Former Degreaser

• AOC-10 Chemical Storage Area*

• AOC-11 Quality Control Laboratory*

• AOC-14 Plating Building Exhaust/Potential Roof Drains*

• AOC-16 Boiler Room*

• AOC-25 Rectifier Room

• AOC-26 Anodizing Building

• AOC-27 Anodizing USTs

• AOC-28 Former Septic Systems

• AOC-35 Equipment/Vehicle Storage*

• AOC-36 Former Metal Hydroxide Roll-Off Location

AOCs marked with an asterisk are likely impacted by fill material and not releases that occurred during operations. Additional assessment is needed to confirm this opinion.

The Phase II ESA did not identify releases to soil at the following AOCs indicating that further soil assessment is not warranted at this time.

• AOC-12 Lacquer Room

• AOC-15 Fuel Tank Room (underground pipe chase requires assessment)

• AOC-23 Former Hazardous Waste Barrel Storage Area

• AOC-32 Log/Soil/Lawn Clippings Piles

Results from the January 2017 sampling event indicate that groundwater beneath most of the site is contaminated with metals at concentrations above the SWPC. Cyanide and VOCs were also reported around AOCs 1 and 2 at concentrations greater than the SWPC and I/C VC, respectively. A detailed summary of groundwater conditions identified during the Phase II

ESA is provided in Section 8.2. Additional assessment is required to delineate the horizontal and vertical extent of groundwater contamination across the site. Groundwater assessment may also require instillation and sampling of bedrock groundwater monitoring wells.

A summary of the Phase II ESA findings is also provided in the attached data tables and figures.

Receptor Survey: Tighe & Bond completed a Water Supply Well Receptor Survey in April 2006 and updated in March 2009. A receptor is defined as a residential or commercial potable well that is in use. The receptor survey was conducted to determine the extent of public water service within 500-feet of the site and identify properties where groundwater supply wells may still be in-use.

The site and the surrounding area is located within a GB groundwater classification area which designates groundwater as unsuitable for human consumption without treatment. The total area of the buffer is approximately 64 acres. The results of the survey indicate that 78 properties are located within a 500-foot radius of the site, each of which are within a public water service area and have been confirmed or are believed to be connected to public water.

0 1,000 2,000 Feet

1:24,000

Y:\Site_Locus_Figures\StratfordCT\540LongbrookAve\2017 Topo.mxd

Based on USGS Topographic Map for Milford and Bridgeport, CT Contour Interval Equals 10ft.

Circles indicate 500-foot and half-mile radii

S-19240

FIGURE 1

DRAFT SITE LOCATION MAP

540 Longbrook Avenue Stratford, Connecticut

May 2017

¹Tighe&Bond Engineers | Environmental Specialists

È

SITE LOCATION

Legend Approximate Site Boundary

SITE PLAN.dwg

CHECKED:

DRAWN BY:

FILE:

DATE:

ADM

XX

XX

Stratford, Connecticut

FIGURE 2

SITE PLAN

WITH AREAS OF CONCERN

APPROVED:

Former

Contract

Plating Facility

Longbrook

Avenue

SCALE:

1" = 50'

00 50' 100'

SCALE IN FEET

GRAPHIC SCALE

1 INCH0

VERIFY SCALE

IF NOT ONE INCH ON

THIS SHEET, ADJUST

SCALES ACCORDINGLY

BAR IS 1 INCH ON

ORIGINAL DRAWING

PROJECT NO:

S1924 www.tighebond.com

P l o t t e d

O n O c t p m

B y a d m

L a s t

S a v e d

T i g h e

B o n d J S S

S t r a t f o r d

B r o w n f i e l d s D r a w i n g s C A D

S h e e t s S I T E

P L A N d w g

2016/06/24

MARK DATE DESCRIPTION

BUILDING AREA DETAIL

SCALE: 1" = 30'

SPENT CLEANER/CN SOLUTION HOLDING TANK

SPENT CLEANER/CN SOLUTION HOLDING TANK

SPENT CHROMATE HOLDING TANK

CYANIDE EQUALIZATION SUMP

CHROME EQUALIZATION SUMP

1ST. STAGE CYANIDE TREATMENT TANK

2ND. STAGE CYANIDE TREATMENT TANK

CHROME WASTEWATER MIX TANK (NO TREAT. CHEMS. ADDED)

CHROMIUM REDUCTION TANK

#1 MIXING (NEUTRALIZATION) TANK

ACID/ALKALI SUMP (NON CH/CHROMIUM WASTEWATERS)

SODIUM HYDROXIDE STORAGE TANK

#2 MIXING TANK (NO TREAT. CHEMS. ADDED)

MAIN TRANSFER SUMP

MAIN SHOP CLARIFIER EQUIPPED W/ FLOCCULATION UNIT

SLUDGE STORAGE TANK

SLUDGE STORAGE TANK

FILTER PRESS

ANODIZING CLARIFIER EQUIPPED W/ FLOCCULATION UNIT

TRANSFER SUMP FOR STORM WATER

#6 FUEL OIL STORAGE TANK

ANODIZING COLLECTION SUMP

ANODIZING TREATMENT TANK WITH TRANSFER PUMPS

UNKNOWN

#6 FUEL OIL STORAGE TANK (REMOVED 1989)

#2 FUEL OIL STORAGE TANK (REMOVED 1989)

DIESEL STORAGE TANK (REMOVED 1989)

A1

B1

C1

A/G

A/G

A/G

U/G

U/G

A/G

A/G

A/G

A/G

A/G

U/G

A/G

U/G

U/G

A/G

A/G

A/G

N/A

A/G

U/G

A/G

U/G

U/G

U/G

U/G

U/G

3,000

3,000

3,000

2,000

1,050

2,500

1,450

4,500

5,100

8,900

8,400

5,000

5,000

N/A

2,800

10,000

7,900

10,000

6,000

10,000

TANK

NO.

ABOVE GROUND (A/G)/

UNDERGROUND (U/G)

CAP.

(GAL.)

CONTENTS/USE

AOC-35

AOC-36

AOC-22

AOC-21

AOC-23

AOC-24

AOC-34

AOC-25

AOC-26

AOC-27

AOC-2

AOC-32

AOC-9

AOC-18

AOC-19

AOC-20

AOC-8

AOC-6

AOC-11

AOC-4

AOC-4/5

AOC-34

AOC-34

AOC-35

AOC-1

AOC-14

PERIMETER OF

BUILDING

AOC-17

AOC-13a

AOC-15

AOC-16

AOC-7

AOC-3

AOC-13b

AOC-33

FORMER TANK LEGEND

ANTICIPATED GROUNDWATER

FLOW DIRECTION

SOUTH/SOUTHEAST

AOC-21

AOC-23

AOC-22

MONITOR WELL

PIEZOMETER

TEST BORING

SOIL BORING

PROPOSED SOIL BORING/ANTICIPATED MONITORING WELL

TEST PIT

PREVIOUS SOIL BORING/MONITORING WELL LOCATION

WELL NOT CURRENTLY VISIBLE

RECESSED BARREL LOCATION

SHALLOW SOIL SAMPLE LOCATION

TANK ID NUMBER

LEGEND

AOC-12

AOC-11

AOC-10

AOC-17

AOC-15

AOC-16

BUILDING

AREA 1

BUILDING

AREA 2

BUILDING

AREA 3

AOC-12

AOC-10

DRAFT

Figure 3

Study Area

540 Longbrook Avenue Stratford, Connecticut

May 2017

¹

1:3,600

NO TES

LOCUS M AP

1. Based on 2016 Statewide Orthophotography, Courtesty of CTECO.

0 150 300 Feet

Y:\Site_Locus_Figures\StratfordCT\540LongbrookAve\Receptor Survey\New\500ft Boundary Aquarion.mxd S-19240

LEGEN D

Tighe&Bond Engineers | Environmental Specialists

Approximate Parcel Boundary

Approximate Site Boundary

500 ft Boundary (63.9 Acres)

Parcels within 500ft

Parcel Vacant -

Currently Provided

No Water Service

Intertidal MarshCarting

Island

FIGURE 4 DRAFT

NATURAL

RESOURCES MAP

540 Longbrook Avenue Stratford, Connecticut

May 2017

¹

1:6,000

NO TES

LOCUS M AP

1. Based on 2016 Statewide Orthophotography, Courtesty of CTECO.

* - Legend item does not appear on map

0 250 500 Feet

Y:\Site_Locus_Figures\StratfordCT\540LongbrookAve\Receptor Survey\New\500ft EV Resources.mxd S-19240

LEGEN D

Tighe&Bond Engineers | Environmental Specialists

Approximate Site Boundary

500 ft Boundary (63.9 Acres)

Parcels within 500ft

CTDEEP Wetlands

National Wetlands Inventory*

Final Adopted Aquifer Protection Area*

Final Aquifer Protection Area*

Preliminary Aquifer Protection Area*

Critical Habitat (2014)

Natural Diversity Database Area (2014)

FEMA Floodplains

ZONE, FLOODWAY

Floodway

100-Year Flood Zone

500-Year Flood Zone

Ground Water Qual i ty Cl ass i f icat ion at s i te i s GB

FIGURE 5 DRAFT

COMMUNITY

WATER SOURCES

540 Longbrook Avenue Stratford, Connecticut

May 2017

¹

1:3,600

NO TES

LOCUS M AP

1. Based on 2016 Statewide Orthophotography, Courtesty of CTECO.

* - Legend item does not appear on map

0 150 300 Feet

Y:\Site_Locus_Figures\StratfordCT\540LongbrookAve\Receptor Survey\New\500ft Community Service.mxd S-19240

LEGEN D

Tighe&Bond Engineers | Environmental Specialists

Approximate Site Boundary

500 ft Boundary (63.9 Acres)

Parcels within 500ft

Parcel Vacant - No Water Service

Approximate Aquarion Distribution

Currently Provided

Water Supply Reservoir*

Water Supply Watershed*

&% Community Well*

&( Non-Community Well*

Service Area

AOC-14 SB1

AOC-14 SB2

AOC-13a SB1 AOC-13a SB2

AOC-13a SB3

AOC-33 SB1

AOC-33 SB2

AOC-13a SB5

AOC-14 SB4

AOC-15 SB1 AOC-16 SB1

AOC-22 SB3

AOC-22 TP1

AOC-22 SB2

AOC-22 TP2

AOC-21 SB1

AOC-23 SB1

AOC-22 SB1

AOC-7 SB1

AOC-3 SB1

AOC-3 SB2

AOC-7 SB2

AOC-1 SB6/MW-105

AOC-1 TP3

AOC-1 SB5/

MW-104

AOC-1 SB3/MW-102

AOC-1 SB4/MW-103

AOC-1 TP4

AOC-1 SB1/

MW-100

AOC-1 TP1

AOC-1 TP2

AOC-1 SB2/MW-101

AOC-32 SB1

AOC-2 SB2

AOC-2 TP1

AOC-26

SB3

AOC-26 SB2

AOC-26 SB1

AOC-25 SB2/

MW-112

AOC-25 SB1AOC-24 SB1

AOC-2 SB1

AOC-27 TP1

AOC-27 SB1

AOC-2 SB3/

MW-109

AOC-18/19/20 TP1

AOC-18/19/20 SB3

AOC-6 SB2

AOC-8 SB1

AOC-9 SB2

AOC-9 SB1

AOC-18/19/20

SB1

AOC-36 SB1AOC-35

SB1

AOC-12 SB2AOC-12 SB1

AOC-10 SB1

AOC-10 SB3

AOC-35 SB4

AOC-4/5SB1

/MW-114

AOC-4/5

SB2

AOC-4/5 TP1

AOC-4/5 SB3

AOC-4/5

SB4 AOC-4/5 SB5

AOC-4/5 TP2

AOC-4/5

SB6/MW-115

AOC-35

SB2

AOC-18/19/20

SB2/MW-110

AOC-24 SB2

AOC-34

SB16

AOC-34

SB17

AOC-34

SB18

AOC-34

SB19

AOC-34

SB20AOC-35

AOC-36

AOC-22

AOC-21

AOC-23

AOC-24

AOC-34

AOC-25

AOC-26

AOC-27

AOC-2

AOC-32

AOC-9

AOC-18

AOC-19

AOC-20

AOC-8

AOC-6

AOC-11

AOC-4

AOC-4/5

AOC-34

AOC-34

AOC-35

AOC-1

AOC-17

AOC-15

AOC-16

BUILDING

AREA 3

AOC-12

AOC-10

AOC-8 SB2

AOC-8 SB3

AOC-1 SB7/MW-106

TP1

TP2

TP3

B-106

B-8

B-7

B-101

B-103

B-104

B-5 B-2

B-102

B-6

B-100 B-3

B-107 B-4

B-108

540LBA-109

540LBA-112

540LBA-108540LBA-106

540LBA-105

540LBA-111

540LBA-107

540LBA-110

540LBA-103

540LBA-101

540LBA-102

Pump station?

AOC-32 SB2/MW-108

AOC-26 SB4

AOC-11 SB1

AOC-13A SB3

AOC-6 SB1

MW-10

AOC-28 SB4

AOC-28 SB1

AOC-28 SB2/AOC-35-SB-35

AOC-10 SB2

BG-3

PZ-14

BG-2

BG-1

AOC-14-SB-1

/MW-116

MW-XR

AOC-13a SB4/MW-113

AOC-22-SB-4/MW-111

COMMERCIAL PROPERTY

FORMER RAYBESTOS

METRO-NORTH RAILROAD TRACKS

AOC-13a TP2

BR2

AOC-28 SB3

AOC-2 TP2

AOC-14 SB3

AOC-17 SB3

AOC-17 SB1 AOC-17 SB4AOC-17

SB2

SAMPLE IDs AOC-13b CC1-4 (CONCRETE) AOC13b SS1-4 (SLAB SOIL)

AOC-14

PERIMETER OF

BUILDING

AOC-17

AOC-13a

AOC-15

AOC-16

AOC-7

AOC-3

AOC-13b

AOC-33

AOC-21

AOC-23

AOC-22

AOC-12 AOC-11AOC-10

BUILDING

AREA 1

BUILDING

AREA 2

AOC-14 SB3

AOC-14 SB1

AOC-14 SB2

AOC-13a SB1

AOC-13a SB2

AOC-13a SB3

AOC-33 SB1

AOC-33 SB2

AOC-13a TP1

AOC-13a SB5

AOC-14 SB4

AOC-15 SB1 AOC-16 SB1

AOC-22 SB3

AOC-22 SB2

AOC-22 TP2

AOC-21 SB1

AOC-23 SB1

AOC-22 SB1

AOC-7 SB1

AOC-3 SB1

AOC-3 SB2

AOC-7 SB2

AOC-18/19/20 SB3AOC-6 SB2

AOC-8 SB1

AOC-9 SB2

AOC-9 SB1 AOC-18/19/20

SB1

AOC-2 TP2

AOC-36 SB1

AOC-35

SB1

AOC-12 SB2

AOC-12 SB1

AOC-10 SB1

AOC-10 SB3

AOC-4/5SB1

/MW-114

AOC-4/5

SB2

AOC-4/5 TP1

AOC-4/5 SB3

AOC-4/5

SB4 AOC-4/5 SB5

AOC-4/5 TP2

AOC-4/5

SB6/MW-115

AOC-17

SB3

AOC-17

SB1

AOC-17

SB4AOC-17

SB2

AOC-35 SB2

AOC-18/19/20

SB2/MW-110

AOC-24 SB2

AOC-8 SB2 AOC-8 SB3

AOC-11 SB1

AOC-13A SB3

AOC-6 SB1

AOC-28 SB1

AOC-10 SB2

AOC-13a SB4/MW-113

AOC-22-SB-4/MW-111

AOC-13a TP2

AOC-22 TP1

B1

S1924-E-FIG2-3-SITE.dwg

CHECKED:

DRAWN BY:

FILE:

DATE:

ADM/JLL

HAL

JTO

Stratford, Connecticut

FIGURE 6

SITE PLAN

WITH AREAS OF CONCERN

AND SAMPLE LOCATIONS

APPROVED:

Former Contract Plating Facility Longbrook Avenue

SCALE: 1" = 50'00 50' 100'

SCALE IN FEET

GRAPHIC SCALE

1 INCH0

VERIFY SCALE

IF NOT ONE INCH ON

THIS SHEET, ADJUST

SCALES ACCORDINGLY

BAR IS 1 INCH ON

ORIGINAL DRAWING

PROJECT NO: S1924

www.tighebond.com

Pl ot te d

O n:

M ar

2, 7-

:1 8a m B y:

J

LL

La st S av ed

:3 /1

/2

Ti gh e

B on d:

C

U se rs \J

LL

\D es kt op \S

-E -F

IG

2-

3- S

IT

E.

dw g

2017/02/28

MARK DATE DESCRIPTION

BUILDING AREA DETAIL

SCALE: 1" = 30'

SPENT CLEANER/CN SOLUTION HOLDING TANK

SPENT CLEANER/CN SOLUTION HOLDING TANK

SPENT CHROMATE HOLDING TANK

CYANIDE EQUALIZATION SUMP

CHROME EQUALIZATION SUMP

1ST. STAGE CYANIDE TREATMENT TANK

2ND. STAGE CYANIDE TREATMENT TANK

CHROME WASTEWATER MIX TANK (NO TREAT. CHEMS. ADDED)

CHROMIUM REDUCTION TANK

#1 MIXING (NEUTRALIZATION) TANK

ACID/ALKALI SUMP (NON CH/CHROMIUM WASTEWATERS)

SODIUM HYDROXIDE STORAGE TANK

#2 MIXING TANK (NO TREAT. CHEMS. ADDED)

MAIN TRANSFER SUMP

MAIN SHOP CLARIFIER EQUIPPED W/ FLOCCULATION UNIT

SLUDGE STORAGE TANK

SLUDGE STORAGE TANK

FILTER PRESS

ANODIZING CLARIFIER EQUIPPED W/ FLOCCULATION UNIT

TRANSFER SUMP FOR STORM WATER

#6 FUEL OIL STORAGE TANK

ANODIZING COLLECTION SUMP

ANODIZING TREATMENT TANK WITH TRANSFER PUMPS

UNKNOWN

#6 FUEL OIL STORAGE TANK (REMOVED 1989)

#2 FUEL OIL STORAGE TANK (REMOVED 1989)

DIESEL STORAGE TANK (REMOVED 1989)

A1 B1 C1

A/G A/G A/G U/G U/G A/G A/G A/G A/G A/G U/G A/G U/G U/G A/G A/G A/G N/A A/G U/G A/G U/G U/G U/G U/G U/G

3,000 3,000 3,000 2,000 1,050 2,500 1,450 4,500 5,100 8,900 8,400 5,000 5,000 N/A 2,800 10,000 7,900 10,000 6,000 10,000

MONITOR WELL

PIEZOMETER

TEST BORING

SOIL BORING

SOIL BORING/COMPLETED AS MONITORING WELL

TEST PIT

PREVIOUS SOIL BORING/MONITORING WELL LOCATION

WELL NOT CURRENTLY VISIBLE

RECESSED BARREL LOCATION

SHALLOW SOIL SAMPLE LOCATION

TANK ID NUMBER

LEGEND

ANTICIPATED GROUNDWATER

FLOW DIRECTION

SOUTH/SOUTHEAST

FORMER TANK LEGEND

TANK

NO.

ABOVE GROUND (A/G)/

UNDERGROUND (U/G)

CAP

(GAL. ) CONTENTS/USE

MW-114

MW-100

MW-106

MW-101

MW-XR

MW-105

MW-104

MW-102

MW-103

MW-Z

MW-9

BR2

MW-109

MW-108

MW-107

MW-112

MW-111

MW-110

MW-115MW-113

MW-116

HURD AVE

LONGBROOK AVE

PA

TTE

RSO

N AV

E

COTTA

GE PL

V:\Projects\S\S1924\MXD\Aerial11x17 GW Flow.mxd

Approximate Site Boundary

Limit of RCRA Cap

Pre-RCRA Lagoons

!< Monitoring Well

FIGURE 7

DRAFT GROUNDWATER

CONDITIONS MAP

Source:

Ortho Base Map: State of Connecticut 2012 aerial imagery with 1-ft ground resolution provided by CTECO GIS data layers displayed on this map were obtained from CTDEEP's data library (http://www.ct.gov/deep).

FIGURE

¹ 0 10050

Feet

LEGEND

L O C U S M A P

1 " = 100 'Map Scale:

540 LONGBROOK AVE

STRATFORD, CONNECTICUT

Map Date:

June

S-19240

Tighe&Bond Engineers | Environmental Specialists

Main Plating Building Wastewater Treatment Building

Anodizing Building

Pre-RCRA Lagoons

Raymark Ballfield

Groundwater Exceedances SWPC Metals

SWPC Cyanide

I/C VC VOCs

RCRA Capped Landfill

Inferred Groundwater Flow Direction

AOC-14 SB1

AOC-14 SB2

AOC-13a SB1 AOC-13a SB2

AOC-13a SB3

AOC-33 SB1

AOC-33 SB2

AOC-13a SB5

AOC-14 SB4

AOC-15 SB1

AOC-16 SB1

AOC-22 SB3

AOC-22 TP1

AOC-22 SB2

AOC-22 TP2

AOC-21 SB1

AOC-23 SB1

AOC-22 SB1

AOC-7 SB1

AOC-3 SB1

AOC-3 SB2

AOC-7 SB2

AOC-1 SB6/MW-105

AOC-1 TP3

AOC-1 SB5/

MW-104

AOC-1 SB3/MW-102

AOC-1 SB4/MW-103

AOC-1 TP4

AOC-1 SB1/

MW-100

AOC-1 TP1

AOC-1 TP2

AOC-1 SB2/MW-101

AOC-32 SB1

AOC-2 SB2

AOC-2 TP1

AOC-26

SB3

AOC-26 SB2

AOC-26 SB1

AOC-25 SB2/

MW-112

AOC-25 SB1AOC-24 SB1

AOC-2 SB1

AOC-27 TP1

AOC-27 SB1

AOC-2 SB3/

MW-109

AOC-18/19/20 TP1

AOC-18/19/20 SB3

AOC-6 SB2

AOC-8 SB1

AOC-9 SB2

AOC-9 SB1 AOC-18/19/20

SB1

AOC-36 SB1AOC-35

SB1

AOC-12 SB2AOC-12 SB1

AOC-10 SB1

AOC-10 SB3

AOC-35 SB4

AOC-4/5SB1

/MW-114

AOC-4/5

SB2

AOC-4/5 TP1

AOC-4/5 SB3

AOC-4/5

SB4 AOC-4/5 SB5

AOC-4/5 TP2

AOC-4/5

SB6/MW-115

AOC-35

SB2

AOC-18/19/20

SB2/MW-110

AOC-24 SB2

AOC-34

SB16

AOC-34

SB17

AOC-34

SB18

AOC-34

SB19

AOC-34

SB20AOC-35

AOC-36

AOC-22

AOC-21

AOC-23

AOC-24

AOC-34

AOC-25

AOC-26

AOC-27

AOC-2

AOC-32

AOC-9

AOC-18

AOC-19

AOC-20

AOC-8

AOC-6

AOC-11

AOC-4

AOC-4/5

AOC-34

AOC-34

AOC-35

AOC-1

AOC-17

AOC-15

AOC-16

AOC-12

AOC-10

AOC-8 SB2 AOC-8 SB3

AOC-1 SB7/MW-106

TP1

TP2

TP3

B-106

B-8

B-7

B-101

B-103

B-104

B-5 B-2

B-102

B-6

B-100 B-3

B-107

B-4

B-108

540LBA-109

540LBA-112

540LBA-108540LBA-106

540LBA-105

540LBA-111

540LBA-107

540LBA-110

540LBA-103

540LBA-101

540LBA-102

Pump station?

AOC-32 SB2/MW-108

AOC-26 SB4

AOC-11 SB1

AOC-13A SB3

AOC-6 SB1

MW-10

AOC-28 SB4

AOC-28 SB1

AOC-28 SB2/

AOC-35-SB-35

AOC-10 SB2

BG-3

PZ-14

BG-2

BG-1

AOC-14-SB-1

/MW-116

MW-XR

AOC-13a SB4/MW-113

AOC-22-SB-4/MW-111

COMMERCIAL PROPERTY

FORMER RAYBESTOS

METRO-NORTH RAILROAD TRACKS

AOC-13a TP2

BR2

AOC-28 SB3

AOC-2 TP2

AOC-14 SB3

AOC-17 SB3

AOC-17 SB1 AOC-17 SB4

AOC-17 SB2

B-1

BUILDING

AREA 1

BUILDING

AREA 2

AOC-14 SB3

AOC-14 SB1

AOC-14 SB2

AOC-13a SB1 AOC-13a SB2

AOC-13a SB3

AOC-33 SB1

AOC-33 SB2

AOC-13a TP1

AOC-13a SB5

AOC-14 SB4

AOC-15 SB1

AOC-16 SB1 AOC-22 SB3

AOC-22 SB2

AOC-22 TP2

AOC-21 SB1

AOC-23 SB1

AOC-22 SB1

AOC-7 SB1

AOC-3 SB1

AOC-3 SB2

AOC-7 SB2

AOC-18/19/20 SB3

AOC-6 SB2

AOC-8 SB1

AOC-9 SB2

AOC-9 SB1

AOC-18/19/20

SB1

AOC-2 TP2

AOC-36 SB1

AOC-35

SB1

AOC-12 SB2

AOC-12 SB1

AOC-10 SB1

AOC-10 SB3

AOC-4/5SB1

/MW-114

AOC-4/5

SB2

AOC-4/5 TP1

AOC-4/5 SB3

AOC-4/5

SB4 AOC-4/5 SB5

AOC-4/5 TP2

AOC-4/5

SB6/MW-115

AOC-17

SB3

AOC-17

SB1

AOC-17

SB4AOC-17

SB2

AOC-35 SB2

AOC-18/19/20

SB2/MW-110

AOC-24 SB2

AOC-8 SB2 AOC-8 SB3

AOC-11 SB1

AOC-6 SB1

AOC-28 SB1

AOC-10 SB2

AOC-13a SB4/MW-113

AOC-22-SB-4/MW-111

AOC-13a TP2

AOC-22 TP1

MW-5

MW-6

AOC-18/19/20 TP1

S1924-XD-Exceedances.dwg

CHECKED:

DRAWN BY:

FILE:

DATE:

ADM/JLL

HAL

JTO

Stratford, Connecticut

FIGURE 8

DRAFT SITE PLAN

WITH EXCEEDANCE

LOCATIONS

APPROVED:

Former

Contract

Plating Facility

Longbrook

Avenue

SCALE: 1" = 50'00 50' 100'

SCALE IN FEET

GRAPHIC SCALE

1 INCH0

VERIFY SCALE

IF NOT ONE INCH ON

THIS SHEET, ADJUST

SCALES ACCORDINGLY

BAR IS 1 INCH ON

ORIGINAL DRAWING

PROJECT NO: S1924

www.tighebond.com

Pl ot te d

O n:

M ar

7, 7- 9:

am

B y:

J

LL

La st

S av ed :3

/7 /2

Ti gh e

B on d:

J:

\S \S

S tr at fo rd B ro w nf ie ld s\

D ra w in gs \C

A D

\S he et s\

S

-X

D -E xc ee da nc es .d w g

2017/03/06

MARK DATE DESCRIPTION

BUILDING AREA DETAIL

SCALE: 1" = 30'

SPENT CLEANER/CN SOLUTION HOLDING TANK

SPENT CLEANER/CN SOLUTION HOLDING TANK

SPENT CHROMATE HOLDING TANK

CYANIDE EQUALIZATION SUMP

CHROME EQUALIZATION SUMP

1ST. STAGE CYANIDE TREATMENT TANK

2ND. STAGE CYANIDE TREATMENT TANK

CHROME WASTEWATER MIX TANK (NO TREAT. CHEMS. ADDED)

CHROMIUM REDUCTION TANK

#1 MIXING (NEUTRALIZATION) TANK

ACID/ALKALI SUMP (NON CH/CHROMIUM WASTEWATERS)

SODIUM HYDROXIDE STORAGE TANK

#2 MIXING TANK (NO TREAT. CHEMS. ADDED)

MAIN TRANSFER SUMP

MAIN SHOP CLARIFIER EQUIPPED W/ FLOCCULATION UNIT

SLUDGE STORAGE TANK

SLUDGE STORAGE TANK

FILTER PRESS

ANODIZING CLARIFIER EQUIPPED W/ FLOCCULATION UNIT

TRANSFER SUMP FOR STORM WATER

#6 FUEL OIL STORAGE TANK

ANODIZING COLLECTION SUMP

ANODIZING TREATMENT TANK WITH TRANSFER PUMPS

UNKNOWN

#6 FUEL OIL STORAGE TANK (REMOVED 1989)

#2 FUEL OIL STORAGE TANK (REMOVED 1989)

DIESEL STORAGE TANK (REMOVED 1989)

A1 B1 C1

A/G A/G A/G U/G U/G A/G A/G A/G A/G A/G U/G A/G U/G U/G A/G A/G A/G N/A A/G U/G A/G U/G U/G U/G U/G U/G

3,000 3,000 3,000 2,000 1,050 2,500 1,450 4,500 5,100 8,900 8,400 5,000 5,000 N/A 2,800 10,000 7,900 10,000 6,000 10,000

MONITOR WELL

PIEZOMETER

TEST BORING

SOIL BORING

SOIL BORING/COMPLETED AS MONITORING WELL

TEST PIT

PREVIOUS SOIL BORING/MONITORING WELL LOCATION

WELL NOT CURRENTLY VISIBLE

RECESSED BARREL LOCATION

SHALLOW SOIL SAMPLE LOCATION

TANK ID NUMBER

LEGEND

ANTICIPATED GROUNDWATER

FLOW DIRECTION

SOUTH/SOUTHEAST

FORMER TANK LEGEND

TANK

NO.

ABOVE GROUND (A/G)/

UNDERGROUND (U/G)

CAP

(GAL. ) CONTENTS/USE

RESIDENTIAL DEC PETROLEUM (ETPH, VOCS, SVOCS)

INDUSTRIAL/COMMERICAL DEC PETROLEUM

RESIDENTIAL DEC METALS

I/C DEC METALS

PCBs AND/OR CYANIDE

GB PMC

EXCEEDANCES KEY

GB PMC CADMIUM

DRAFT Table 2

Summary of Monitoring Well Construction and Gauging Data

Contract Plating

540 Longbrook Ave

Stratford, CT

Screen Interval

(BGS)

PVC Elevation

Standpipe

Elevation

Ground

Elevation

Depth to

Water

Depth to

Bottom

Water

Column

Water

Elevation

Depth to

Water

Depth to

Bottom

Water

Column

Water

Elevation

MW-100 15-25' 21.117 21.311 18.006 18.00 26.80 8.80 3.117 16.02 26.80 10.78 5.097

MW-101 5-15' 13.018 13.230 10.016 9.96 20.09 10.13 3.058 7.98 20.09 12.11 5.038

MW-102 8-18' 15.589 15.760 12.615 12.64 20.61 7.97 2.949 10.78 20.61 9.83 4.809

MW-103 14-24' 22.845 23.038 19.302 19.94 27.80 7.86 2.905 18.09 27.80 9.71 4.755

MW-104 14-24' 22.999 23.135 20.016 20.18 26.85 6.67 2.819 18.38 26.85 8.47 4.619

MW-105 15-25' 21.975 22.173 19.199 18.99 26.91 7.92 2.985 17.05 26.91 9.86 4.925

MW-106 13-23' 22.245 22.449 19.170 19.16 24.69 5.53 3.085 17.18 24.69 7.51 5.065

PZ-14 - 20.217 20.533 18.143 17.02 21.37 4.35 3.197 14.99 21.37 6.38 5.227

MW-108 10-20' 20.130 20.374 17.541 17.08 21.90 4.82 3.050 15.13 21.90 6.77 5.000

MW-109 10-20' 20.734 20.942 17.866 17.67 21.95 4.28 3.064 15.72 21.95 6.23 5.014

MW-110 9-19' 19.199 19.372 16.613 15.83 21.95 6.12 3.369 13.78 21.95 8.17 5.419

MW-111 9-19' 19.702 19.944 17.057 15.87 21.19 5.32 3.832 13.84 21.19 7.35 5.862

MW-112 3-13' 23.908 24.028 20.516 7.59 14.51 6.92 16.318 7.57 14.51 6.94 16.338

MW-113 10-20' 22.130 22.352 19.202 18.37 22.13 3.76 3.760 16.28 22.13 5.85 5.850

MW-114 15-25' 22.800 23.036 20.083 19.25 27.40 8.15 3.550 17.12 27.40 10.28 5.680

MW-115 5-20' 23.001 23.215 19.588 20.03 22.10 2.07 2.971 17.21 22.10 4.89 5.791

MW-116 8-18' 22.987 23.212 20.809 15.18 19.50 4.32 7.807 15.68 19.50 3.82 7.307

MW-9 - 20.026 20.291 17.964 16.99 23.00 6.01 3.036 15.03 23.00 7.97 4.996

MW-XR 15-25' 22.268 22.441 19.224 19.26 27.10 7.84 3.008 17.28 27.10 9.82 4.988

MW-Z 13-23' 21.443 21.485 19.803 18.53 23.00 4.47 2.913 16.64 23.00 6.36 4.803

BR2 - 19.517 19.703 17.619 16.46 Unknown Unknown 3.057 14.52 Unknown Unknown 4.997

Well ID

1/9/2017Well Specifics 6/7/2017

DRAFT Table 3

Summary of Soil Analytical Data (No Metals)

Phase II/III Environmental Site Assessment

Contract Plating

Stratford, CT

Sample ID

AOC-1-SB-1 (1-

3 FT)

AOC-1-SB-2

(1-3 FT)

AOC-1-SB-3

(1-3 FT)

AOC-1-SB-3

(5-7 FT)

AOC-1-SB-4

(10-12 FT)

AOC-1-SB-4

(18-20 FT)

AOC-1-SB-5

(10-12 FT)

AOC-1-SB-6

(13-15 FT)

DUP-5

AOC-1-SB-7

(13-15 FT)

AOC-1 TP-1

(2-4 FT)

AOC-1 TP-2

(10-12 FT)

AOC-1 TP-3

(2-4 FT)

AOC-1 TP-4

(5-7 FT)

DUP 7

MW-XR

(10-12 FT)

AOC-2 SB-1

(13-15 FT)

AOC-2 SB-2

(1-3 FT)

AOC-2 SB-3

(11-13 FT)

AOC-2 SB-3

(5-8 FT)

AOC-2 TP-2

(6-8 FT)

AOC-3-SB-1

(8-10 FT)

AOC-3-SB2

(5-7 FT)

Sample Date 12/19/2016 12/19/2016 1/4/2017 12/19/2016 12/20/2016 12/19/2016 12/20/2016 12/19/2016 12/19/2016 12/19/2016 12/28/2016 12/28/2016 12/28/2016 12/28/2016 12/28/2016 12/22/2016 12/16/2016 12/16/2016 12/16/2016 12/16/2016 12/30/2016 12/14/2016 12/14/2016

LabSampleID BX08321 BX08318 BX16236 BX08322 BX09676 BX08323 BX09673 BX08319 BX08326 BX08320 BX13727 BX13726 BX13725 BX13724 BX13728 BX11383 BX07299 BX07300 BX07303 BX07301 BX14436 BX05825 BX06593

ETPH (mg/kg) 500 2,500 2,500 160 1,200 ND<310 730 ND<58 ND<57 ND<52 ND<53 ND<60 ND<50 ND<54 ND<53 1,400 8,800 5,000 ND<52 ND<51 ND<280 4,200 190 240 64 12,000

Cyanide

Total Cyanide (mg/kg) 1,400 41,000 NE 441 940 4.44 1,230 6.80 0.74 10.5 ND<0.48 ND<0.61 0.95 121 6.22 671 462 1,850 ND<0.53 ND<0.51 1.28 1,950 367 16.2 79.0 ND<0.54

SPLP Cyanide (mg/l) NE NE 2 - - - - - - - - - - - 0.17 - 0.06 - - - - - - - -

PCBs (mg/kg)

Aroclor-1254 NE NE NE ND<0.39 ND<0.61 ND<0.42 ND<0.68 ND<0.39 ND<0.38 ND<0.34 ND<0.35 ND<0.39 ND<0.34 ND<0.36 ND<0.35 ND<0.79 17.000 11.000 0.440 ND<0.34 ND<0.39 ND<0.61 1.300 ND<0.45 ND<0.39 0.690

Aroclor-1260 NE NE NE ND<0.39 1.500 ND<0.42 1.800 ND<0.39 ND<0.38 ND<0.34 ND<0.35 ND<0.39 ND<0.34 ND<0.36 ND<0.35 ND<0.79 ND<5 ND<1 ND<0.34 ND<0.34 ND<0.39 1.100 ND<0.42 1.100 ND<0.39 ND<0.35

Aroclor-1268 NE NE NE ND<0.39 ND<0.61 ND<0.42 ND<0.68 ND<0.39 ND<0.38 ND<0.34 ND<0.35 ND<0.39 ND<0.34 ND<0.36 ND<0.35 4.800 ND<5 ND<1 ND<0.34 ND<0.34 ND<0.39 ND<0.61 ND<0.42 ND<0.45 ND<0.39 ND<0.35

Total PCBs 1 10 NE ND<0.39 1.5 ND<0.42 1.8 ND<0.39 ND<0.38 ND<0.34 ND<0.35 ND<0.39 ND<0.34 ND<0.36 ND<0.35 4.8 17 11 0.440 ND<0.34 ND<0.39 1.1 1.3 1.1 ND<0.39 0.690

Semi-VOCs (mg/kg)

2-Methylnaphthalene 270 1,000 5.6 ND<0.27 ND<0.43 ND<0.29 ND<0.48 ND<0.27 ND<0.26 ND<0.24 ND<0.24 ND<0.28 ND<0.23 ND<0.25 ND<0.24 ND<0.54 ND<0.57 ND<0.59 ND<0.24 ND<0.23 ND<0.27 0.480 ND<0.29 0.700 ND<0.28 ND<0.25

Acenaphthene 1,000 2,500 84 ND<0.27 ND<0.43 ND<0.29 ND<0.48 ND<0.27 ND<0.26 ND<0.24 ND<0.24 ND<0.28 ND<0.23 ND<0.25 ND<0.24 ND<0.54 ND<0.57 ND<0.59 ND<0.24 ND<0.23 ND<0.27 ND<0.44 ND<0.29 0.400 ND<0.28 ND<0.25

Acenaphthylene 1,000 2,500 84 ND<0.27 ND<0.43 ND<0.29 ND<0.48 ND<0.27 ND<0.26 ND<0.24 ND<0.24 ND<0.28 ND<0.23 ND<0.25 ND<0.24 ND<0.54 ND<0.57 ND<0.59 ND<0.24 ND<0.23 ND<0.27 ND<0.44 ND<0.29 ND<0.31 ND<0.28 ND<0.25

Anthracene 1,000 2,500 400 ND<0.27 ND<0.43 0.330 ND<0.48 ND<0.27 ND<0.26 ND<0.24 ND<0.24 ND<0.28 ND<0.23 ND<0.25 ND<0.24 ND<0.54 ND<0.57 ND<0.59 ND<0.24 ND<0.23 ND<0.27 ND<0.44 ND<0.29 ND<0.31 0.830 ND<0.25

Benz(a)anthracene 1 7.8 1 ND<0.27 ND<0.43 1.4 ND<0.48 ND<0.27 ND<0.26 ND<0.24 ND<0.24 ND<0.28 ND<0.23 ND<0.25 ND<0.24 ND<0.54 ND<0.57 ND<0.59 ND<0.24 ND<0.23 ND<0.27 ND<0.44 ND<0.29 0.540 3.4 ND<0.25

Benzo(a)pyrene 1 1 1 ND<0.27 ND<0.43 1.2 ND<0.48 ND<0.27 ND<0.26 ND<0.24 ND<0.24 ND<0.28 ND<0.23 ND<0.25 ND<0.24 ND<0.54 ND<0.57 ND<0.59 ND<0.24 ND<0.23 ND<0.27 ND<0.44 ND<0.29 0.520 2.9 ND<0.25

Benzo(b)fluoranthene 1 7.8 1 ND<0.27 ND<0.43 1.2 ND<0.48 ND<0.27 ND<0.26 ND<0.24 ND<0.24 ND<0.28 ND<0.23 ND<0.25 ND<0.24 ND<0.54 ND<0.57 ND<0.59 ND<0.24 ND<0.23 ND<0.27 ND<0.44 ND<0.29 0.510 2.7 ND<0.25

Benzo(g,h,i)perylene 8.4 78 1 ND<0.27 ND<0.43 0.740 ND<0.48 ND<0.27 ND<0.26 ND<0.24 ND<0.24 ND<0.28 ND<0.23 ND<0.25 ND<0.24 ND<0.54 ND<0.57 ND<0.59 ND<0.24 ND<0.23 ND<0.27 ND<0.44 ND<0.29 0.350 1.3 ND<0.25

Benzo(k)fluoranthene 8.4 78 1 ND<0.27 ND<0.43 1.2 ND<0.48 ND<0.27 ND<0.26 ND<0.24 ND<0.24 ND<0.28 ND<0.23 ND<0.25 ND<0.24 ND<0.54 ND<0.57 ND<0.59 ND<0.24 ND<0.23 ND<0.27 ND<0.44 ND<0.29 0.600 3 ND<0.25 bis(2-Ethylhexyl)phthalate 44 410 11 ND<0.27 2.100 ND<0.29 1.500 ND<0.27 ND<0.26 ND<0.24 ND<0.24 ND<0.28 ND<0.23 ND<0.25 ND<0.24 0.600 2.500 2.100 ND<0.24 ND<0.23 ND<0.27 ND<0.44 ND<0.29 ND<0.31 ND<0.28 2.800

Chrysene 84 780 1 ND<0.27 ND<0.43 1.4 ND<0.48 ND<0.27 ND<0.26 ND<0.24 ND<0.24 ND<0.28 ND<0.23 ND<0.25 ND<0.24 ND<0.54 ND<0.57 ND<0.59 ND<0.24 ND<0.23 ND<0.27 ND<0.44 ND<0.29 0.730 4.1 ND<0.25

Dibenz(a,h)anthracene 1 1 1 ND<0.27 ND<0.43 ND<0.29 ND<0.48 ND<0.27 ND<0.26 ND<0.24 ND<0.24 ND<0.28 ND<0.23 ND<0.25 ND<0.24 ND<0.54 ND<0.57 ND<0.59 ND<0.24 ND<0.23 ND<0.27 ND<0.44 ND<0.29 ND<0.31 0.330 ND<0.25

Di-N-Butyl phthalate 1,000 2,500 140 ND<0.27 ND<0.43 ND<0.29 ND<0.48 ND<0.27 ND<0.26 ND<0.24 ND<0.24 ND<0.28 ND<0.23 ND<0.25 ND<0.24 ND<0.54 ND<0.57 ND<0.59 ND<0.24 ND<0.23 ND<0.27 ND<0.44 ND<0.29 0.460 ND<0.28 ND<0.25

Fluoranthene 1,000 2,500 56 ND<0.27 ND<0.43 2.800 ND<0.48 ND<0.27 ND<0.26 ND<0.24 ND<0.24 ND<0.28 ND<0.23 ND<0.25 ND<0.24 ND<0.54 ND<0.57 ND<0.59 ND<0.24 ND<0.23 ND<0.27 0.660 ND<0.29 0.890 5.300 ND<0.25

Fluorene 1,000 2,500 56 ND<0.27 ND<0.43 ND<0.29 ND<0.48 ND<0.27 ND<0.26 ND<0.24 ND<0.24 ND<0.28 ND<0.23 ND<0.25 ND<0.24 ND<0.54 ND<0.57 ND<0.59 ND<0.24 ND<0.23 ND<0.27 0.490 ND<0.29 0.490 ND<0.28 ND<0.25

Indeno(1,2,3-cd)pyrene 1 7.8 1 ND<0.27 ND<0.43 0.780 ND<0.48 ND<0.27 ND<0.26 ND<0.24 ND<0.24 ND<0.28 ND<0.23 ND<0.25 ND<0.24 ND<0.54 ND<0.57 ND<0.59 ND<0.24 ND<0.23 ND<0.27 ND<0.44 ND<0.29 0.330 1.6 ND<0.25

Naphthalene 1,000 2,500 56 ND<0.27 ND<0.43 ND<0.29 ND<0.48 ND<0.27 ND<0.26 ND<0.24 ND<0.24 ND<0.28 ND<0.23 ND<0.25 ND<0.24 ND<0.54 ND<0.57 ND<0.59 ND<0.24 ND<0.23 ND<0.27 ND<0.44 ND<0.29 1.100 ND<0.28 ND<0.25

Phenanthrene 1,000 2,500 40 ND<0.27 ND<0.43 1.400 ND<0.48 ND<0.27 ND<0.26 ND<0.24 ND<0.24 ND<0.28 ND<0.23 ND<0.25 ND<0.24 ND<0.54 ND<0.57 ND<0.59 ND<0.24 ND<0.23 ND<0.27 1.700 ND<0.29 0.800 3.900 ND<0.25

Pyrene 1,000 2,500 40 ND<0.27 ND<0.43 2.500 ND<0.48 ND<0.27 ND<0.26 ND<0.24 ND<0.24 ND<0.28 ND<0.23 ND<0.25 ND<0.24 ND<0.54 ND<0.57 ND<0.59 ND<0.24 ND<0.23 ND<0.27 0.540 ND<0.29 0.970 5.300 ND<0.25

VOCs (mg/kg)

1,1,1-Trichloroethane 500 1,000 40 - - ND<0.0051 ND<0.014 - - - ND<0.0026 - - - - ND<0.012 ND<0.013 - - - ND<0.0085 - ND<7.8 0.560 0.022

1,1,2-Trichloroethane 11 100 1 - - ND<0.0051 ND<0.014 - - - ND<0.0026 - - - - ND<0.012 ND<0.013 - - - ND<0.0085 - ND<7.8 ND<0.0047 ND<0.0028

1,1-Dichloroethane 500 1,000 14 - - ND<0.0051 ND<0.014 - - - ND<0.0026 - - - - ND<0.012 ND<0.013 - - - ND<0.0085 - ND<7.8 ND<0.0047 ND<0.0028

1,2,4-Trimethylbenzene 500 1,000 28 - - ND<0.0051 ND<0.014 - - - ND<0.0026 - - - - ND<0.012 ND<0.013 - - - 0.560 - 0.440 ND<0.0047 ND<0.0028

1,3,5-Trimethylbenzene 500 1,000 28 - - ND<0.0051 ND<0.014 - - - ND<0.0026 - - - - ND<0.012 ND<0.013 - - - 0.0097 - ND<7.8 ND<0.0047 ND<0.0028

4-Isopropyltoluene (cymene) 500 1,000 5 - - ND<0.0051 ND<0.014 - - - ND<0.0026 - - - - ND<0.012 ND<0.013 - - - ND<0.0085 - ND<7.8 ND<0.0047 ND<0.0028

Acetone 500 1,000 140 - - ND<0.25 ND<0.71 - - - ND<0.13 - - - - 0.940 0.900 - - - ND<0.42 - ND<0.39 ND<0.24 ND<0.14

Benzene 21 200 0.2 - - ND<0.0051 ND<0.014 - - - ND<0.0026 - - - - ND<0.012 ND<0.013 - - - ND<0.0085 - 0.34 0.100 ND<0.0028

Butylbenzene, n- 500 1,000 70 - - ND<0.0051 ND<0.014 - - - ND<0.0026 - - - - ND<0.012 ND<0.013 - - - ND<0.0085 - ND<7.8 ND<0.0047 ND<0.0028

Butylbenzene, sec- 500 1,000 70 - - ND<0.0051 ND<0.014 - - - ND<0.0026 - - - - ND<0.012 ND<0.013 - - - ND<0.0085 - ND<7.8 ND<0.0047 ND<0.0028

Carbon disulfide 500 1,000 8 - - ND<0.0051 ND<0.014 - - - ND<0.0026 - - - - ND<0.012 ND<0.013 - - - ND<0.0085 - ND<7.8 ND<0.0047 ND<0.0028

Chloroethane 130 1,000 1.5 - - ND<0.0051 ND<0.014 - - - ND<0.0026 - - - - ND<0.012 ND<0.013 - - - ND<0.0085 - ND<7.8 ND<0.0047 ND<0.0028

Chloroform 100 940 1.2 - - ND<0.0051 ND<0.014 - - - ND<0.0026 - - - - ND<0.012 ND<0.013 - - - ND<0.0085 - ND<7.8 ND<0.0047 0.0056 cis-1,2-Dichloroethene 500 1,000 14 - - ND<0.0051 ND<0.014 - - - ND<0.0026 - - - - 0.015 ND<0.013 - - - ND<0.0085 - ND<7.8 ND<0.0046 0.0042 m,p-Xylene - - ND<0.0051 ND<0.014 - - - ND<0.0026 - - - - ND<0.012 ND<0.013 - - - 0.960 - 0.960 ND<0.0047 ND<0.0028

Methyl ethyl ketone 500 1,000 80 - - ND<0.03 ND<0.085 - - - ND<0.016 - - - - 0.160 0.160 - - - ND<0.051 - ND<0.047 ND<0.028 ND<0.017 n-Propylbenzene 500 1,000 10 - - ND<0.0051 ND<0.014 - - - ND<0.0026 - - - - ND<0.012 ND<0.013 - - - ND<0.0085 - ND<7.8 ND<0.0047 ND<0.0028 o-Xylene - - ND<0.0051 ND<0.014 - - - ND<0.0026 - - - - ND<0.012 ND<0.013 - - - ND<0.0085 - ND<7.800001E-03 ND<0.0047 ND<0.0028

Tetrachloroethene 12 110 1 - - ND<0.0051 ND<0.014 - - - ND<0.0026 - - - - ND<0.012 ND<0.013 - - - ND<0.0085 - ND<7.8 0.480 0.100

Total Xylenes 500 1,000 19.5 - - ND<0.0051 ND<0.014 - - - ND<0.0026 - - - - ND<0.012 ND<0.013 - - - 0.960 - 0.960 ND<0.0047 ND<0.0028

Trichloroethene 56 520 1 - - ND<0.0051 ND<0.014 - - - ND<0.0026 - - - - ND<0.012 ND<0.013 - - - ND<0.0085 - ND<7.8 23 0.230

Naphthalene NE NE NE - - ND<0.0051 ND<0.014 - - - ND<0.0026 - - - - ND<0.012 ND<0.013 - - - ND<0.0085 - ND<7.8 ND<0.0047 ND<0.0028

Pesticides (mg/kg)

4,4'-DDE 1.8 17 0.003 - - - - - - - - - - - - - - - - - - - - - - -

Chlordane 0.49 2.2 0.066 - - - - - - - - - - - - - - - - - - - - - - -g-BHC NE NE NE - - - - - - - - - - - - - - - - - - - - - - -

Heptachlor epoxide 0.067 0.63 0.02 - - - - - - - - - - - - - - - - - - - - - - -

Herbicides (mg/kg) Varies Varies Varies - - - - - - - - - - - - - - - - - - - - - - -

Notes:

RES DEC - Residential Direct Exposure Criteria

I/C DEC - Industrial Commercial Direct Exposure Criteria

GB PMC - GB Pollutant Mobility Criteria mg/kg - miligrams per kilogram ug/L - micrograms per Liter

ETPH - Extractable Total petroleum Hydrocarbons

VOCs - Volatile Organic Compounds

SVOCs - Semi Volatile Organic Compounds

ND - Not detected above listed laboratory reporting limit

BRL - Below reporting limits

NE - RSR criteria not established

Boxed and Bolded - Concentration exceeds CTDEEP RSR criteria

Boxed, Bolded, and Shaded - Exceeds 30 times the I/C DEC

GB PMCRES DEC

CTDEEP RSR Criteria

* - An elevated reporting limit was reported due to the presence of non-target compounds, likely chlordane, which co-elutes with the PCBs.

Area of Concern AOC-1 AOC-2 AOC-3

Italicized - Additional Polluting Substance and Alternative Criteria approved by CTDEEP for use with permission on a site-by-site basis.

Only compounds detected are summarized in the table (compounds that are not listed were not detected)

I/C DEC

Phase II/III Environmental Site Assessment

Contract Plating

Stratford, CT

Sample ID

Sample Date

LabSampleID

ETPH (mg/kg) 500 2,500 2,500

Cyanide

Total Cyanide (mg/kg) 1,400 41,000 NE

SPLP Cyanide (mg/l) NE NE 2

PCBs (mg/kg)

Aroclor-1254 NE NE NE

Aroclor-1260 NE NE NE

Aroclor-1268 NE NE NE

Total PCBs 1 10 NE

Semi-VOCs (mg/kg)

2-Methylnaphthalene 270 1,000 5.6

Acenaphthene 1,000 2,500 84

Acenaphthylene 1,000 2,500 84

Anthracene 1,000 2,500 400

Benz(a)anthracene 1 7.8 1

Benzo(a)pyrene 1 1 1

Benzo(b)fluoranthene 1 7.8 1

Benzo(g,h,i)perylene 8.4 78 1

Benzo(k)fluoranthene 8.4 78 1 bis(2-Ethylhexyl)phthalate 44 410 11

Chrysene 84 780 1

Dibenz(a,h)anthracene 1 1 1

Di-N-Butyl phthalate 1,000 2,500 140

Fluoranthene 1,000 2,500 56

Fluorene 1,000 2,500 56

Indeno(1,2,3-cd)pyrene 1 7.8 1

Naphthalene 1,000 2,500 56

Phenanthrene 1,000 2,500 40

Pyrene 1,000 2,500 40

VOCs (mg/kg)

1,1,1-Trichloroethane 500 1,000 40

1,1,2-Trichloroethane 11 100 1

1,1-Dichloroethane 500 1,000 14

1,2,4-Trimethylbenzene 500 1,000 28

1,3,5-Trimethylbenzene 500 1,000 28

4-Isopropyltoluene (cymene) 500 1,000 5

Acetone 500 1,000 140

Benzene 21 200 0.2

Butylbenzene, n- 500 1,000 70

Butylbenzene, sec- 500 1,000 70

Carbon disulfide 500 1,000 8

Chloroethane 130 1,000 1.5

Chloroform 100 940 1.2 cis-1,2-Dichloroethene 500 1,000 14 m,p-Xylene

Methyl ethyl ketone 500 1,000 80 n-Propylbenzene 500 1,000 10 o-Xylene

Tetrachloroethene 12 110 1

Total Xylenes 500 1,000 19.5

Trichloroethene 56 520 1

Naphthalene NE NE NE

Pesticides (mg/kg)

4,4'-DDE 1.8 17 0.003

Chlordane 0.49 2.2 0.066 g-BHC NE NE NE

Heptachlor epoxide 0.067 0.63 0.02

Herbicides (mg/kg) Varies Varies Varies

Notes:

RES DEC - Residential Direct Exposure Criteria

I/C DEC - Industrial Commercial Direct Exposure Criteria

GB PMC - GB Pollutant Mobility Criteria mg/kg - miligrams per kilogram ug/L - micrograms per Liter

ETPH - Extractable Total petroleum Hydrocarbons

VOCs - Volatile Organic Compounds

SVOCs - Semi Volatile Organic Compounds

ND - Not detected above listed laboratory reporting limit

BRL - Below reporting limits

NE - RSR criteria not established

Boxed and Bolded - Concentration exceeds CTDEEP RSR criteria

Boxed, Bolded, and Shaded - Exceeds 30 times the I/C DEC

GB PMCRES DEC

CTDEEP RSR Criteria

* - An elevated reporting limit was reported due to the presence of non-target compounds, likely chlordane, which co-elutes with the PCBs.

Area of Concern

Italicized - Additional Polluting Substance and Alternative Criteria approved by CTDEEP for use with permission on a site-by-site basis.

Only compounds detected are summarized in the table (compounds that are not listed were not detected)

I/C DEC

AOC-11

AOC-4/5-SB-1

(8-10 FT)

AOC-4/5 SB-2

(13-15 FT)

AOC-4/5-SB-3

(2-4 FT)

AOC-4/5-SB-4

(6-8 FT)

AOC-4/5-SB-5

(6-8 FT)

AOC-4/5-SB-6

(6-8 FT)

AOC4/5 TP-1

(3-4 FT)

AOC-6-SB-1

(8-10 FT)

AOC-6-SB-2

(3-5 FT)

AOC-7-SB-1

(5-7 FT)

AOC-7-SB-2

(3-5 FT)

AOC-8-SB-1

(1-3 FT)

AOC-8-SB-2

(13-15 FT)

AOC-8-SB-3

(10-12 FT)

AOC-9-SB-1

(1-3 FT)

AOC-9-SB-2

(5-7 FT)

AOC-10 SB-1

(1-3 FT)

AOC-10-SB-2

(1-3 FT)

AOC-10 SB-3

(1-3 FT)

AOC-11 SB-1

(1-3 FT)

AOC-12 SB-1

(1-3 FT)

AOC-12 SB-2

(1-3 FT)

12/12/2016 12/16/2016 12/12/2016 12/12/2016 12/12/2016 12/14/2016 12/30/2016 12/14/2016 12/14/2016 12/14/2016 12/14/2016 12/14/2016 12/14/2016 12/14/2016 12/14/2016 12/14/2016 12/13/2016 12/12/2016 12/13/2016 12/13/2016 12/13/2016 12/13/2016

BX04453 BX07304 BX04454 BX04458 BX04459 BX05821 BX14440 BX05820 BX05823 BX05826 BX05827 BX05829 BX05822 BX05824 BX05833 BX05828 BX05423 BX04462 BX05428 BX05430 BX05425 BX05426

ND<51 ND<51 ND<51 ND<54 ND<51 16,000 200 820 ND<57 ND<53 ND<54 ND<55 ND<53 ND<58 2,400 ND<54 ND<51 ND<51 180 ND<57 ND<52 ND<54

152 1.25 11.7 101 ND<0.46 2.06 16.7 17.5 3.07 ND<0.53 154 - - - 48.2 ND<0.56 ND<0.53 ND<0.53 23.1 ND<0.57 ND<0.54 ND<0.55

ND<0.33 ND<0.34 ND<0.34 ND<0.35 ND<0.33 ND<0.36 ND<0.37 - - ND<0.35 ND<0.36 ND<0.36 ND<0.34 0.490 ND<0.82 ND<0.36 ND<0.35 ND<0.34 ND<0.37 ND<0.38 ND<0.35 ND<0.36

ND<0.33 ND<0.34 ND<0.34 ND<0.35 ND<0.33 ND<0.36 ND<0.37 - - ND<0.35 ND<0.36 ND<0.36 ND<0.34 ND<0.38 ND<0.82 ND<0.36 ND<0.35 ND<0.34 ND<0.37 ND<0.38 ND<0.35 ND<0.36

ND<0.33 ND<0.34 ND<0.34 ND<0.35 ND<0.33 ND<0.36 ND<0.37 - - ND<0.35 ND<0.36 ND<0.36 ND<0.34 ND<0.38 ND<0.82 ND<0.36 ND<0.35 ND<0.34 ND<0.37 ND<0.38 ND<0.35 ND<0.36

ND<0.33 ND<0.34 ND<0.34 ND<0.35 ND<0.33 ND<0.36 ND<0.37 - - ND<0.35 ND<0.36 ND<0.36 ND<0.34 0.490 ND<0.82 ND<0.36 ND<0.35 ND<0.34 ND<0.37 ND<0.38 ND<0.35 ND<0.36

ND<0.23 ND<0.24 ND<0.24 ND<0.25 ND<0.23 120 1.100 - - ND<0.25 ND<0.25 ND<0.26 ND<0.24 ND<0.27 ND<0.57 ND<0.25 ND<0.24 ND<0.24 ND<0.26 ND<0.26 ND<0.25 ND<0.25

ND<0.23 ND<0.24 ND<0.24 ND<0.25 ND<0.23 ND<5 1.800 - - ND<0.25 ND<0.25 ND<0.26 ND<0.24 ND<0.27 ND<0.57 ND<0.25 ND<0.24 ND<0.24 ND<0.26 ND<0.26 ND<0.25 ND<0.25

ND<0.23 ND<0.24 ND<0.24 ND<0.25 ND<0.23 ND<5 0.380 - - ND<0.25 ND<0.25 ND<0.26 ND<0.24 ND<0.27 ND<0.57 ND<0.25 ND<0.24 ND<0.24 ND<0.26 ND<0.26 ND<0.25 ND<0.25

ND<0.23 ND<0.24 ND<0.24 ND<0.25 ND<0.23 ND<5 5.900 - - ND<0.25 ND<0.25 ND<0.26 ND<0.24 ND<0.27 ND<0.57 ND<0.25 ND<0.24 ND<0.24 ND<0.26 ND<0.26 ND<0.25 ND<0.25

ND<0.23 ND<0.24 ND<0.24 ND<0.25 ND<0.23 ND<2.4 7.4 - - ND<0.25 ND<0.25 ND<0.26 ND<0.24 ND<0.27 0.730 ND<0.25 ND<0.24 ND<0.24 0.840 ND<0.26 ND<0.25 ND<0.25

ND<0.23 ND<0.24 ND<0.24 ND<0.25 ND<0.23 ND<2.3 7.1 - - ND<0.25 ND<0.25 ND<0.26 ND<0.24 ND<0.27 0.660 ND<0.25 ND<0.24 ND<0.24 0.750 ND<0.26 ND<0.25 ND<0.25

ND<0.23 ND<0.24 ND<0.24 ND<0.25 ND<0.23 ND<2.5 4.9 - - ND<0.25 ND<0.25 ND<0.26 ND<0.24 ND<0.27 0.650 ND<0.25 ND<0.24 ND<0.24 0.660 ND<0.26 ND<0.25 ND<0.25

ND<0.23 ND<0.24 ND<0.24 ND<0.25 ND<0.23 ND<5 3.4 - - ND<0.25 ND<0.25 ND<0.26 ND<0.24 ND<0.27 0.950 0.770 ND<0.24 ND<0.24 0.330 ND<0.26 ND<0.25 ND<0.25

ND<0.23 ND<0.24 ND<0.24 ND<0.25 ND<0.23 ND<2.4 5.1 - - ND<0.25 ND<0.25 ND<0.26 ND<0.24 ND<0.27 ND<0.57 ND<0.25 ND<0.24 ND<0.24 0.710 ND<0.26 ND<0.25 ND<0.25

ND<0.23 - ND<0.24 ND<0.25 ND<0.23 - - - - ND<0.25 ND<0.25 ND<0.26 ND<0.24 ND<0.27 - - ND<0.24 ND<0.24 ND<0.26 ND<0.26 - -

ND<0.23 ND<0.24 ND<0.24 ND<0.25 ND<0.23 ND<5 7.9 - - ND<0.25 ND<0.25 ND<0.26 ND<0.24 ND<0.27 0.780 ND<0.25 ND<0.24 ND<0.24 0.850 ND<0.26 ND<0.25 ND<0.25

ND<0.23 ND<0.24 ND<0.24 ND<0.25 ND<0.23 ND<2.3 0.850 - - ND<0.25 ND<0.25 ND<0.26 ND<0.24 ND<0.27 ND<0.57 ND<0.25 ND<0.24 ND<0.24 ND<0.26 ND<0.26 ND<0.25 ND<0.25

ND<0.23 - ND<0.24 ND<0.25 ND<0.23 - - - - ND<0.25 ND<0.25 ND<0.26 ND<0.24 ND<0.27 - - ND<0.24 ND<0.24 ND<0.26 ND<0.26 - -

ND<0.23 ND<0.24 ND<0.24 ND<0.25 ND<0.23 ND<5 16.000 - - ND<0.25 ND<0.25 ND<0.26 ND<0.24 ND<0.27 1.500 ND<0.25 ND<0.24 ND<0.24 1.300 ND<0.26 ND<0.25 ND<0.25

ND<0.23 ND<0.24 ND<0.24 ND<0.25 ND<0.23 6.100 2.300 - - ND<0.25 ND<0.25 ND<0.26 ND<0.24 ND<0.27 ND<0.57 ND<0.25 ND<0.24 ND<0.24 ND<0.26 ND<0.26 ND<0.25 ND<0.25

ND<0.23 ND<0.24 ND<0.24 ND<0.25 ND<0.23 ND<5 3.9 - - ND<0.25 ND<0.25 ND<0.26 ND<0.24 ND<0.27 0.820 0.680 ND<0.24 ND<0.24 0.400 ND<0.26 ND<0.25 ND<0.25

ND<0.23 ND<0.24 ND<0.24 ND<0.25 ND<0.23 27.000 1.300 - - ND<0.25 ND<0.25 ND<0.26 ND<0.24 ND<0.27 ND<0.57 ND<0.25 ND<0.24 ND<0.24 ND<0.26 ND<0.26 ND<0.25 ND<0.25

ND<0.23 ND<0.24 ND<0.24 ND<0.25 ND<0.23 11.000 19.000 - - ND<0.25 ND<0.25 ND<0.26 ND<0.24 ND<0.27 0.980 ND<0.25 ND<0.24 ND<0.24 0.800 ND<0.26 ND<0.25 ND<0.25

ND<0.23 ND<0.24 ND<0.24 ND<0.25 ND<0.23 ND<4 15.000 - - ND<0.25 ND<0.25 ND<0.26 ND<0.24 ND<0.27 1.500 ND<0.25 ND<0.24 ND<0.24 1.300 ND<0.26 ND<0.25 ND<0.25

ND<0.0024 ND<0.0024 - - - ND<1.1 - ND<0.0035 ND<0.29 ND<0.0032 ND<0.003 0.360 ND<0.0042 0.0042 ND<0.011 ND<0.0038 ND<0.0032 ND<0.0036 ND<0.0044 ND<0.0045 ND<0.0032 ND<0.0039

ND<0.0024 ND<0.0024 - - - ND<0.22 - ND<0.0035 ND<0.1 ND<0.0032 ND<0.003 0.0052 ND<0.0042 ND<0.0036 ND<0.011 ND<0.0041 ND<0.0032 ND<0.0036 ND<0.0044 ND<0.0045 ND<0.0032 ND<0.0039

ND<0.0024 ND<0.0024 - - - ND<1.1 - ND<0.0035 ND<0.29 ND<0.0032 ND<0.003 ND<0.0036 ND<0.0042 ND<0.0036 ND<0.011 0.0094 ND<0.0032 ND<0.0036 ND<0.0044 ND<0.0045 ND<0.0032 ND<0.0039

ND<0.0024 ND<0.0024 - - - 17.000 - ND<0.0035 ND<0.29 ND<0.0032 ND<0.003 ND<0.0036 ND<0.0042 ND<0.0036 ND<1.3 ND<0.0041 ND<0.0032 0.0008 ND<0.0044 ND<0.0045 ND<0.0032 ND<0.0039

ND<0.0024 ND<0.0024 - - - 7.400 - ND<0.0035 ND<0.29 ND<0.0032 ND<0.003 ND<0.0036 ND<0.0042 ND<0.0036 ND<1.3 ND<0.0041 ND<0.0032 0.0004 ND<0.0044 ND<0.0045 ND<0.0032 ND<0.0039

ND<0.0024 ND<0.0024 - - - 2.300 - ND<0.0035 ND<0.29 ND<0.0032 ND<0.003 ND<0.0036 ND<0.0042 ND<0.0036 ND<0.6 ND<0.0041 ND<0.0032 ND<0.0036 ND<0.0044 ND<0.0045 ND<0.0032 ND<0.0039

ND<0.12 ND<0.12 - - - ND<14 - ND<0.17 ND<14 ND<0.16 ND<0.15 ND<0.18 ND<0.21 ND<0.18 ND<0.56 ND<0.2 ND<0.16 ND<0.18 ND<0.22 ND<0.22 ND<0.16 ND<0.2

ND<0.0024 ND<0.0024 - - - ND<0.11 - ND<0.0035 ND<0.029 ND<0.0032 ND<0.003 ND<0.0036 ND<0.0042 ND<0.0036 ND<0.011 ND<0.0041 ND<0.0032 ND<0.0036 ND<0.0044 ND<0.0045 ND<0.0032 ND<0.0039

ND<0.0024 ND<0.0024 - - - 2.200 - ND<0.0035 ND<0.29 ND<0.0032 ND<0.003 ND<0.0036 ND<0.0042 ND<0.0036 ND<1.3 ND<0.0041 ND<0.0032 ND<0.0036 ND<0.0044 ND<0.0045 ND<0.0032 ND<0.0039

ND<0.0024 ND<0.0024 - - - 1.700 - ND<0.0035 ND<0.29 ND<0.0032 ND<0.003 ND<0.0036 ND<0.0042 ND<0.0036 ND<1.3 ND<0.0041 ND<0.0032 ND<0.0036 ND<0.0044 ND<0.0045 ND<0.0032 ND<0.0039

ND<0.0024 ND<0.0024 - - - ND<1.1 - ND<0.0035 ND<0.29 ND<0.0032 ND<0.003 ND<0.0036 ND<0.0042 ND<0.0036 0.013 ND<0.0041 ND<0.0032 ND<0.0036 ND<0.0044 ND<0.0045 ND<0.0032 ND<0.0039

ND<0.0024 ND<0.0024 - - - ND<1.1 - ND<0.0035 ND<0.29 ND<0.0032 ND<0.003 ND<0.0036 ND<0.0042 ND<0.0036 ND<0.011 0.012 ND<0.0032 ND<0.0036 ND<0.0044 ND<0.0045 ND<0.0032 ND<0.0039

ND<0.0024 ND<0.0024 - - - ND<0.12 - ND<0.0035 ND<0.12 ND<0.0032 ND<0.003 ND<0.0036 ND<0.0042 ND<0.0036 ND<0.011 ND<0.0041 ND<0.0032 ND<0.0036 ND<0.0044 ND<0.0045 ND<0.0032 ND<0.0039

ND<0.0024 ND<0.0024 - - - ND<1.1 - ND<0.0035 ND<0.29 ND<0.0032 0.0084 ND<0.0036 ND<0.0042 ND<0.0036 ND<0.011 0.016 ND<0.0032 ND<0.0036 ND<0.0044 ND<0.0045 ND<0.0032 ND<0.0039

ND<0.0024 ND<0.0024 - - - 2.000 - ND<0.0035 ND<0.29 ND<0.0032 ND<0.003 ND<0.0036 ND<0.0042 ND<0.0036 ND<0.011 ND<0.0041 ND<0.0032 ND<0.0036 ND<0.0044 ND<0.0045 ND<0.0032 ND<0.0039

ND<0.015 ND<0.015 - - - ND<6.6 - ND<0.021 ND<1.7 ND<0.019 ND<0.018 ND<0.021 ND<0.025 ND<0.022 ND<0.068 ND<0.024 ND<0.019 ND<0.021 ND<0.027 ND<0.027 ND<0.019 ND<0.023

ND<0.0024 ND<0.0024 - - - 1.300 - ND<0.0035 ND<0.29 ND<0.0032 ND<0.003 ND<0.0036 ND<0.0042 ND<0.0036 ND<1.3 ND<0.0041 ND<0.0032 ND<0.0036 ND<0.0044 ND<0.0045 ND<0.0032 ND<0.0039

ND<0.0024 ND<0.0024 - - - 0.970 - ND<0.0035 ND<0.29 ND<0.0032 ND<0.003 ND<0.0036 ND<0.0042 ND<0.0036 ND<0.011 0.0065 ND<0.0032 ND<0.0036 ND<0.0044 ND<0.0045 ND<0.0032 ND<0.0039

ND<0.0024 ND<0.0024 - - - ND<0.22 - ND<0.0035 ND<0.1 ND<0.0032 ND<0.003 0.360 ND<0.0042 ND<0.0036 ND<0.011 ND<0.0041 ND<0.0032 ND<0.0036 ND<0.0044 ND<0.0045 ND<0.0032 ND<0.0039

ND<0.0024 ND<0.0024 - - - 2.970 - ND<0.0035 ND<0.29 ND<0.0032 ND<0.003 ND<0.0036 ND<0.0042 ND<0.0036 ND<0.011 0.0065 ND<0.0032 ND<0.0036 ND<0.0044 ND<0.0045 ND<0.0032 ND<0.0039

ND<0.0024 ND<0.0024 - - - ND<0.11 - 0.010 0.420 ND<0.0032 0.041 0.450 ND<0.0042 0.016 ND<0.011 0.140 ND<0.0032 0.0038 ND<0.0044 ND<0.0045 ND<0.0032 ND<0.0039

ND<0.0024 ND<0.0024 - - - 17.000 - ND<0.0035 ND<0.29 ND<0.0032 ND<0.003 ND<0.0036 ND<0.0042 ND<0.0036 ND<1.3 ND<0.0041 ND<0.0032 ND<0.0036 ND<0.0044 ND<0.0045 ND<0.0032 ND<0.0039

AOC-9 AOC-10 AOC-12AOC-4/5 AOC-6 AOC-7 AOC-8

Phase II/III Environmental Site Assessment

Contract Plating

Stratford, CT

Sample ID

Sample Date

LabSampleID

ETPH (mg/kg) 500 2,500 2,500

Cyanide

Total Cyanide (mg/kg) 1,400 41,000 NE

SPLP Cyanide (mg/l) NE NE 2

PCBs (mg/kg)

Aroclor-1254 NE NE NE

Aroclor-1260 NE NE NE

Aroclor-1268 NE NE NE

Total PCBs 1 10 NE

Semi-VOCs (mg/kg)

2-Methylnaphthalene 270 1,000 5.6

Acenaphthene 1,000 2,500 84

Acenaphthylene 1,000 2,500 84

Anthracene 1,000 2,500 400

Benz(a)anthracene 1 7.8 1

Benzo(a)pyrene 1 1 1

Benzo(b)fluoranthene 1 7.8 1

Benzo(g,h,i)perylene 8.4 78 1

Benzo(k)fluoranthene 8.4 78 1 bis(2-Ethylhexyl)phthalate 44 410 11

Chrysene 84 780 1

Dibenz(a,h)anthracene 1 1 1

Di-N-Butyl phthalate 1,000 2,500 140

Fluoranthene 1,000 2,500 56

Fluorene 1,000 2,500 56

Indeno(1,2,3-cd)pyrene 1 7.8 1

Naphthalene 1,000 2,500 56

Phenanthrene 1,000 2,500 40

Pyrene 1,000 2,500 40

VOCs (mg/kg)

1,1,1-Trichloroethane 500 1,000 40

1,1,2-Trichloroethane 11 100 1

1,1-Dichloroethane 500 1,000 14

1,2,4-Trimethylbenzene 500 1,000 28

1,3,5-Trimethylbenzene 500 1,000 28

4-Isopropyltoluene (cymene) 500 1,000 5

Acetone 500 1,000 140

Benzene 21 200 0.2

Butylbenzene, n- 500 1,000 70

Butylbenzene, sec- 500 1,000 70

Carbon disulfide 500 1,000 8

Chloroethane 130 1,000 1.5

Chloroform 100 940 1.2 cis-1,2-Dichloroethene 500 1,000 14 m,p-Xylene

Methyl ethyl ketone 500 1,000 80 n-Propylbenzene 500 1,000 10 o-Xylene

Tetrachloroethene 12 110 1

Total Xylenes 500 1,000 19.5

Trichloroethene 56 520 1

Naphthalene NE NE NE

Pesticides (mg/kg)

4,4'-DDE 1.8 17 0.003

Chlordane 0.49 2.2 0.066 g-BHC NE NE NE

Heptachlor epoxide 0.067 0.63 0.02

Herbicides (mg/kg) Varies Varies Varies

Notes:

RES DEC - Residential Direct Exposure Criteria

I/C DEC - Industrial Commercial Direct Exposure Criteria

GB PMC - GB Pollutant Mobility Criteria mg/kg - miligrams per kilogram ug/L - micrograms per Liter

ETPH - Extractable Total petroleum Hydrocarbons

VOCs - Volatile Organic Compounds

SVOCs - Semi Volatile Organic Compounds

ND - Not detected above listed laboratory reporting limit

BRL - Below reporting limits

NE - RSR criteria not established

Boxed and Bolded - Concentration exceeds CTDEEP RSR criteria

Boxed, Bolded, and Shaded - Exceeds 30 times the I/C DEC

GB PMCRES DEC

CTDEEP RSR Criteria

* - An elevated reporting limit was reported due to the presence of non-target compounds, likely chlordane, which co-elutes with the PCBs.

Area of Concern

Italicized - Additional Polluting Substance and Alternative Criteria approved by CTDEEP for use with permission on a site-by-site basis.

Only compounds detected are summarized in the table (compounds that are not listed were not detected)

I/C DEC

AOC-15

AOC-13A-SB-1

(1-3 FT)

AOC-13A SB-2

(6-8 FT)

AOC-13A-SB-3

(0-2 FT)

AOC-13A SB-4

(5-7 FT)

DUP-2

AOC-13A SB-4

(7-9 FT)

AOC-13A SB-5

(3-5 FT)

AOC-13A TP-1

(1-2 FT)

AOC-13A TP-2

(2.5 FT)

AOC-14-SB-1

(0-2 FT)

AOC-14-SB-2

(1-2 FT)

AOC-14 SB-3

(3-5 FT)

AOC-14 SB-4

(1-3 FT)

AOC-15 SB-1

(3-5 FT)

AOC-16 SB-1

(5-7 FT)

AOC-16-SB-1

(5-7 FT)

AOC-17 SB-1

(1-3 FT)

AOC-17 SB-2

(1-3 FT)

AOC-17 SB-3

(1-3 FT)

AOC-17 SB-4

(1-3 FT)

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