final indoor air quality report #11

FINAL

INDOOR AIR QUALITY REPORT #11

Former Raritan Arsenal

FUDS Project Number C02NJ0084-02

February 2016

Prepared for:

U.S. Army Corps of Engineers – New England District

Contract No. W912WJ-11-D-0002

Delivery Order 0005

Prepared by:

A Service-Disabled Veteran Owned Small Business

Table of Contents

SECTION TITLE PAGE

i

1. INTRODUCTION AND OBJECTIVES ............................................................................. 1-1

1.1 Regulatory Requirements and Agency Coordination .................................................. 1-1 1.2 Background .................................................................................................................. 1-2

1.2.1 Previous Reporting................................................................................................... 1-4

1.2.1.1 Groundwater AOCs Requiring No Further Action for Vapor Intrusion ......... 1-5 1.2.1.2 IAQ Report #7 Recommendations .................................................................. 1-5 1.2.1.3 IAQ Report #8 Recommendations .................................................................. 1-6

1.2.1.4 IAQ Report #9 Recommendations .................................................................. 1-7 1.2.1.5 IAQ Report #10 Recommendations ................................................................ 1-8

1.3 Vapor Migration Pathway .......................................................................................... 1-10

1.4 USACE Indoor Air Evaluation Process ..................................................................... 1-11

2. METHODOLOGY .............................................................................................................. 2-1

2.1 Sampling Design .......................................................................................................... 2-1 2.2 Sampling Methods ....................................................................................................... 2-2

2.2.1 Groundwater Evaluation .......................................................................................... 2-2

2.2.2 Subslab Soil Gas Sampling Method ........................................................................ 2-3 2.2.3 Building Survey Method .......................................................................................... 2-4

2.2.4 Indoor Air Sampling Method ................................................................................... 2-5

2.2.5 Vapor Recovery Air Sampling Method ................................................................... 2-6

2.2.6 Ambient Air Sampling Method ............................................................................... 2-7 2.2.7 Meteorological Data................................................................................................. 2-7

2.2.8 Quality Assurance/Control....................................................................................... 2-7 2.2.9 Sample Handling and Shipping ............................................................................... 2-8 2.2.10 Data Validation Procedures ..................................................................................... 2-8

2.3 Available Screening Levels ......................................................................................... 2-9 2.3.1 NJDEP Vapor Intrusion Screening Levels ............................................................ 2-10 2.3.2 Site-Specific Screening Levels .............................................................................. 2-10 2.3.3 Screening Levels Used for Comparisons ............................................................... 2-11

3. SAMPLING RESULTS FOR GROUNDWATER AOC 2 ................................................. 3-1

3.1 Overview of Groundwater AOC 2 ............................................................................... 3-2

3.1.1 Building Survey ....................................................................................................... 3-3 3.1.2 Subslab Soil Gas and Vapor Recovery System ....................................................... 3-4 3.1.3 Indoor Air................................................................................................................. 3-4 3.1.4 Meteorological Data................................................................................................. 3-4

3.2 165 Fieldcrest Avenue ................................................................................................. 3-4 3.2.1 Prior Investigations .................................................................................................. 3-5

Table of Contents, continued

SECTION TITLE PAGE

ii

3.2.2 Current Investigation ............................................................................................. 3-10 3.2.2.1 Subslab Soil Gas and Vapor Recovery System Results ................................ 3-11

3.2.2.2 Indoor Air and Background Sampling Results .............................................. 3-12 3.2.3 Integrated Discussion of Results ............................................................................ 3-12 3.2.4 Conclusions and Recommendations ...................................................................... 3-13

3.3 Campus Plaza 4 .......................................................................................................... 3-13 3.3.1 Prior Investigations ................................................................................................ 3-14

3.3.2 Current Investigation ............................................................................................. 3-16 3.3.2.1 Subslab Soil Gas Results ............................................................................... 3-16 3.3.2.2 Indoor Air and Background Sampling Results .............................................. 3-16

3.3.3 Integrated Discussion of Results ............................................................................ 3-17

3.3.4 Conclusions and Recommendations ...................................................................... 3-17

4. GROUNDWATER AOC 6 .................................................................................................. 4-1

4.1 Overview ...................................................................................................................... 4-1 4.2 102-168 Fernwood Avenue ......................................................................................... 4-2

4.2.1 Prior Investigations .................................................................................................. 4-2 4.2.2 Current Investigation ............................................................................................... 4-3 4.2.3 Conclusions and Recommendations ........................................................................ 4-3

5. SAMPLING RESULTS FOR GROUNDWATER AOC 8 A/B .......................................... 5-1

5.1 Overview of Groundwater AOC 8 ............................................................................... 5-1

5.1.1 Building Survey ....................................................................................................... 5-2 5.1.2 Subslab Soil Gas ...................................................................................................... 5-2

5.1.3 Indoor Air................................................................................................................. 5-2 5.1.4 Meteorological Data................................................................................................. 5-2

5.2 EPA Building 10 .......................................................................................................... 5-3

5.2.1 Prior Investigations .................................................................................................. 5-3 5.2.2 Current Investigation ............................................................................................... 5-4

5.2.2.1 Subslab Soil Gas Results ................................................................................. 5-4 5.2.2.2 Indoor Air and Background Sampling Results ................................................ 5-5

5.2.3 Integrated Discussion of Results .............................................................................. 5-5

5.2.4 Conclusions and Recommendations ........................................................................ 5-6 5.3 EPA Building 18 .......................................................................................................... 5-7

5.3.1 Prior Investigations .................................................................................................. 5-7 5.3.2 Current Investigation ............................................................................................... 5-8

5.3.2.1 Subslab Soil Gas Results ................................................................................. 5-9 5.3.2.2 Indoor Air and Background Sampling Results ................................................ 5-9

5.3.3 Integrated Discussion of Results ............................................................................ 5-10 5.3.4 Conclusions and Recommendations ...................................................................... 5-10

5.4 EPA Building 200 ...................................................................................................... 5-10


SECTION TITLE PAGE

iii

5.4.1 Prior Investigations ................................................................................................ 5-10 5.4.2 Current Investigation ............................................................................................. 5-11

5.4.2.1 Subslab Soil Gas Sampling Results............................................................... 5-12 5.4.2.2 Indoor Air and Background Sampling Results .............................................. 5-12


5.5 EPA Building 205 ...................................................................................................... 5-13

5.5.1 Prior Investigations ................................................................................................ 5-13 5.5.2 Current Investigation ............................................................................................. 5-15

5.5.2.1 Subslab Soil Gas Sampling Results............................................................... 5-15 5.5.2.2 Indoor Air and Background Sampling Results .............................................. 5-16


6. REFERENCES .................................................................................................................... 6-1


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List of Appendices

Appendix A 160 Fieldcrest Annual Report

Appendix B Building 165 Workplan for Vapor Mitigation System and Monitoring

Appendix C Campus Plaza 4 Historic Data Review

Appendix D 102 Fernwood Avenue Annual Report

Appendix E EPA Building 10 Optimization Study

Appendix F Leak Test Results

Appendix G Indoor Air Building Survey and Sampling Forms

Appendix H Meteorological Data

Appendix I Site-Specific Criteria

Appendix J AOC 2 – Historical Results Summary

Appendix K Electronic Data Deliverables (on CD)

Appendix L Laboratory Analytical Results and Data Validation Reports (on CD)

Appendix M AOC 8 A/B – Historical Results Summary

List of Tables

Table ES-1 Groundwater AOC 2 Sampling Result and Proposed Action Summary

Table ES-2 Groundwater AOC 6 Sampling Result and Proposed Action Summary

Table ES-3 Groundwater AOC 8 A/B Sampling Result and Proposed Action Summary

Table 1-1 Status of Vapor Intrusion Concerns for Groundwater AOCs

Table 1-2 List of Tenants and Addresses

Table 2-1 Subslab Soil Gas Sample Location Summary – Groundwater AOC 2

Table 2-2 Indoor Air Sample Location Summary – Groundwater AOC 2

Table 2-3 Subslab Soil Gas Sample Location Summary – Groundwater AOC 8 A/B

Table 2-4 Indoor Air Sample Location Summary – Groundwater AOC 8 A/B

Table 2-5 AOC 2: Subslab Soil Gas Sampling Summary

Table 2-6 AOC 8 A/B: Subslab Soil Gas Sampling Summary

Table 2-7 AOC 2: Indoor Air Sampling Summary

Table 2-8 AOC 8 A/B: Indoor Air Sampling Summary

Table 2-9 Site-Specific Screening Levels

Table 3-1 Contaminants of Potential Concern – Groundwater AOC 2

Table 3-2 Subslab Soil Gas Analytical Results: September 2014 and March 2015 – 165

Fieldcrest: Groundwater AOC 2

Table 3-3 Vapor Recovery Analytical Results: September 2014 and March 2015 – 165

Fieldcrest: Groundwater AOC 2

Table 3-4 Subslab Soil Gas Analytical Results: September 2014 and January 2015 –

Campus Plaza 4: Groundwater AOC 2

Table 3-5 Indoor Air Analytical Results: September 2014 and March 2015 – 165 Fieldcrest:

Groundwater AOC 2

Table 3-6 Indoor Air Analytical Results: September 2014 and January 2015 – Campus Plaza

4: Groundwater AOC 2


v

Table 3-7 Meteorological Data Summary – Groundwater AOC 2

Table 3-8 165 Fieldcrest Avenue Sample Summary

Table 3-9 Campus Plaza 4 Sample Summary

Table 4-1 Contaminants of Potential Concern – Groundwater AOC 6A

Table 5-1 Contaminants of Potential Concern – Groundwater AOC 8A/B

Table 5-2 Subslab Soil Gas Analytical Results: September 2014 and January 2015 – EPA

Building 10: Groundwater AOC 8A/B







Table 5-6 Indoor Air Analytical Results: September 2014 and January 2015 – EPA Building

10: Groundwater AOC 8A/B







Table 5-10 Meteorological Data Summary – Groundwater AOC 8A/B

Table 5-11 EPA Building 10 Sample Summary




List of Figures

Figure ES-1 Indoor Air Program Overview

Figure 1-1 Indoor Air Evaluation Approach

Figure 3-1 PCE & TCE Results for Subslab Soil Gas and Indoor Air Samples, Building 165

Fieldcrest

Figure 3-2 PCE & TCE Results for Subslab Soil Gas and Indoor Air Samples, Campus Plaza

4

Figure 4-1 PCE & TCE Results for Subslab Soil Gas and Indoor Air Samples, 102 Fernwood

Avenue

Figure 5-1 PCE & TCE Results for Subslab Soil Gas and Indoor Air Samples, EPA Building

10


18


200


vi


205

Acronyms and Abbreviations

AA ambient air

AOC area of concern

Avatar Avatar Environmental, LLC

bgs below ground surface

CENAE U.S. Army Corps of Engineers – New England District

CENAN U.S. Army Corps of Engineers – New York District

CERCLA Comprehensive Environmental Response, Compensation, and Liability Act

COPC contaminant of potential concern

CP Campus Plaza

cy cubic yard

DCA dichloroethane

DCB dichlorobenzene

DCE dichloroethylene

DERP Defense Environmental Restoration Program

DOD Department of Defense

EDD Electronic Data Deliverable

EO executive order

EWMA Environmental Waste Management Associates

EPA U.S. Environmental Protection Agency

FBC Federal Business Center

FS feasibility study

ft feet

FUDS Formerly Used Defense Site

GWQS Groundwater Quality Standard

GWRAWP Groundwater Remedial Action Work Plan

IA indoor air

IAQ indoor air quality

LCD Local Climatological Data

MCL Maximum Contaminant Level

MNA monitored natural attenuation

MSDS material safety data sheet

MTBE methyl tert-butyl ether

NAR Natural Attenuation Report

NCP National Contingency Plan

NJDEP New Jersey Department of Environmental Protection

NOAA National Oceanic and Atmospheric Administration

NPL National Priorities List

PCE tetrachloroethylene


vii

QA Quality Assurance

QAPP Quality Assurance Project Plan

QC Quality Control

RA remedial action

RCP Raritan Center Parkway

RD remedial design

RI remedial investigation

RPD relative percent difference

SARA Superfund Amendments and Reauthorization Act

SOP standard operating procedure

SSD subslab depressurization

SSSG subslab soil gas

SSV subslab venting

SVE soil vapor extraction

TCE trichloroethylene

UFP Uniform Federal Policy

USACE U.S. Army Corps of Engineers

USC United States Code

UST underground storage tank

VC vinyl chloride

VI vapor intrusion

VIG vapor intrusion guidance

VR vapor recovery

VOC volatile organic compound

Weston Weston Solutions, Inc.

ES-1

Executive Summary

This Indoor Air Quality Report #11 focuses on the results from sampling events completed at the

former Raritan Arsenal during September 2014 and January/March 2015. The report summarizes

the recent results relative to prior sampling events. The following types of samples were

collected: indoor air (IA), subslab soil gas (SSSG), vapor recovery (VR), and ambient air (AA).

Buildings requiring ongoing investigation for vapor intrusion (VI) concerns based on prior

results from groundwater and VI sampling were sampled for volatile organic compounds

(VOCs). Figure ES-1 presents an overview of the VI sampling program at the former Raritan

Arsenal. It depicts the various Groundwater Areas of Concern (AOCs) along with the buildings

included in the sampling program.

The primary site Contaminants of Potential Concern (COPCs) for the Groundwater AOCs have

been determined by comparing the most recent groundwater sample results with groundwater

screening levels that are protective of the VI pathway. Tetrachloroethylene (PCE),

trichloroethylene (TCE), and vinyl chloride (VC) are the Groundwater AOC 2 COPCs (see Table

3-1). TCE is the COPC for Groundwater AOC 8 A/B (see Table 5-1).

The analytical results for all sample types were evaluated collectively to determine whether the

VI pathway is complete for each building, to make recommendations for future action(s) and

where applicable, to determine if existing subslab vapor mitigation systems are operating

effectively in removing contamination in subslab soil gas. The analytical results were compared

with screening levels from the New Jersey Department of Environmental Protection (NJDEP)

and site-specific screening levels developed by the U.S. Army Corps of Engineers (USACE).

The recommendations for each building are described in the following paragraphs and presented

in Tables ES-1 through ES-3.

Groundwater AOC 2

ES-2

USACE continues to monitor three buildings within Groundwater AOC 2 for potential VI issues:

160 Fieldcrest, 165 Fieldcrest, and Campus Plaza 4. Two buildings (165 Fieldcrest and Campus

Plaza 4) are sampled semi-annually. The third building (160 Fieldcrest) is sampled every 5 years

with annual inspections of the subslab vapor mitigation system. Table ES-1 presents a summary

of the recent sampling results along with proposed actions for Groundwater AOC 2.

160 Fieldcrest – This building had a passive subslab vapor mitigation system installed in June

2008. Subsequent sampling has shown VOC concentrations in VR samples above soil gas

screening levels. VOCs have not been observed in the indoor air. The absence of VOCs in

indoor air illustrates that the VR system at 160 Fieldcrest is operating as designed. USACE

performs an annual inspection of the subslab vapor mitigation system to ensure that the system is

operating properly. Appendix A contains the most recent Remedial Action Progress Report

(Geosyntec, 2015a) that presents a summary of the activities conducted between 6 November

2013 and 18 November 2014 and the system inspection conducted on 18 November 2014. It is

recommended that system inspections continue on an annual basis to ensure the VR system

continues to operate properly. The next analytical sampling round is scheduled for 2017.

165 Fieldcrest – The NJDEP installed a subslab depressurization (SSD) system at 165 Fieldcrest

in August 2003. At that time, lines of evidence for vapor intrusion and building use factors led

NJDEP to conclude that the VI pathway was possibly complete. Elevated levels of both TCE and

PCE in groundwater in the immediate vicinity of the building, elevated levels of TCE and PCE

in soil gas samples collected beneath the building, levels of PCE in indoor air, and the presence

of a child care facility in the building were all factors leading to the decision to install the

system.

The data from the September 2014 and March 2015 sampling events for 165 Fieldcrest showed

that the VI pathway is potentially complete but the detected concentrations are below levels of

concern. Neither PCE nor TCE were detected in SSSG or IA at levels of concern even during the

September 2014 sampling event when a portion of the SSD system was intentionally turned off.

SSSG Results – None of the SSSG sample results from the recent sampling for PCE and

TCE were greater than the soil gas screening levels. The chloroform SSSG sample result

from one location collected in September 2014 exceeded the NJDEP VIG nonresidential

ES-3

soil gas screening level. The chloroform SSSG level in the March 2015 sample collected

from the same location was less than the screening level. No other VOCs were detected

in subslab soil gas at concentrations greater than the site-specific or the NJDEP VIG

screening levels.

VR Results – There were no screening level exceedances in the VR samples collected

during the September 2014 and March 2015 sampling events.

IA Results – The site COPCs (PCE, TCE, and VC) were not detected in the September

2014 IA samples even when a portion of the SSD system was turned off. TCE was

detected in one IA sample collected in March 2015. PCE was detected at four locations

in March 2015. All detected PCE and TCE concentrations were less than the screening

levels. 1,2-Dichloroethane slightly exceeded its screening level at one location (165-5) in

September 2014. Other VOCs detected in indoor air at concentrations above the NJDEP

VIG screening levels included benzene, ethylbenzene, and chloroform. Benzene and

ethylbenzene exceeded screening levels in September 2014 and March 2015. Chloroform

exceeded screening levels in March 2015 only. The IA levels of these constituents were

likely from an indoor source and not the VI pathway as demonstrated by the absence of

these chemicals in the SSSG.

USACE conducted an intentional, partial shutdown of the SSD system in August 2014 in

advance of the planned September 2014 sampling event. The SSD system was turned off so that

confirmation tests could be performed as part of the initial phase of the system closure plan.

Upon completion of the September 2014 sampling event, the system was turned back on.

USACE submitted a work plan (USACE, 2014) to NJDEP to seek concurrence on a protocol to

allow for a full or partial SSD system shutdown at 165 Fieldcrest Avenue, such that the final

evaluation phase of the soil vapor intrusion pathway may be completed. The next steps to be

taken at 165 Fieldcrest are contingent on the results of a focused groundwater sampling event

that was completed in August 2015. Appendix B contains the work plan and subsequent

comments from NJDEP and responses from USACE.

Campus Plaza 4 – Campus Plaza 4 does not have a subslab vapor mitigation system. The

results from the September 2014 and January 2015 sampling events are summarized by below.

SSSG Results – TCE concentrations in SSSG samples collected in September 2014 and

January 2015 exceeded the nonresidential soil gas screening level at two of five sample

locations. The recent TCE levels are similar to those that have been observed previously.

No other site COPCs had SSSG levels greater than screening levels.

ES-4

IA Results – None of the site COPCs were detected in the IA samples collected during

the September 2014 sampling event. The site COPCs were detected in the January 2015

samples but the concentrations were less than the nonresidential screening levels. Since

TCE was detected in both soil gas and indoor air, a potentially complete exposure

pathway exists at Campus Plaza 4, but the IA concentrations are not a concern.

There has been a significant reduction in TCE levels in IA at Campus Plaza 4 when

compared to previous sampling events. The previous TCE levels were due to a previous

tenant’s undocumented use of TCE. Since the departure of that tenant from Campus Plaza

4, TCE has not been an indoor air concern.

The ambient ethylbenzene concentration from the September 2014 sampling event

exceeded its nonresidential NJDEP screening level.

USACE plans to reduce the frequency of subslab and indoor air sampling for Campus Plaza 4.

The next sampling event is planned for winter 2016 at which time the data will be reevaluated, as

will the determination of the need and frequency of future sampling events.

In their comments to IAQ Report #10 (Avatar, 2014), NJDEP recommended implementation of

remedial measures to address the VI pathway at Campus Plaza 4 in a letter dated November 6,

2014. This recommendation was based on NJDEP’s assessment that the observed relationship

among historical groundwater, soil gas and indoor air data indicates the presence of TCE in

indoor air is due to vapor intrusion. A comprehensive review of the data, including a temporal

trends analysis, collected from the building was performed and submitted to NJDEP in a letter

dated April 20, 2015 (see Appendix C). This review concluded that the observed historical TCE

exceedances are primarily attributable to background TCE sources inside the building from a

former tenant rather than vapor intrusion. Consequently, it is USACE’s position that the

installation of a SSD system to mitigate VI is not required and that additional sampling at a

reduced frequency will be performed. NJDEP responded to USACE’s 20 April 2015 letter on 3

August 2015 (see Appendix C) and determined that the VI pathway cannot be completely ruled

out and that continued monitoring at a reduced frequency is acceptable.

Groundwater AOC 6

One building within AOC 6 (102-168 Fernwood) is being monitored. USACE installed a subslab

vapor mitigation system on October 2, 2009 to address VOCs in soil gas. The site COPCs (TCE

ES-5

and vinyl chloride) were either non-detect or were detected at levels that were less than the

nonresidential screening levels.

In April 2011, PCE and TCE were detected in SSSG at concentrations greater than NJDEP VIG

screening levels at the same sample location. However, neither TCE nor PCE were detected

above NJDEP VIG screening levels for indoor air. This indicates that while TCE and PCE do not

pose health risks in indoor air, the remaining concentrations of both constituents in soil gas

should continue to be monitored (Table ES-2)

The subslab vapor mitigation system was modified in March 2011 from an active (electric)

system to solar powered system. Annual inspections of the subslab vapor mitigation system are

performed to ensure that the system is operating properly (see Appendix D). USACE conducts a

monthly visual inspection including measuring the vacuum at each vapor extraction point to

verify the system is operating. USACE recommends annual inspection of the passive treatment

system to ensure the system is properly functioning with sampling every 5 years. The next

sampling round is scheduled for 2017.

Groundwater AOC 8 A/B

Four U.S. Environmental Protection Agency (EPA) buildings (Buildings 10, 18, 200, and 205)

were sampled within Groundwater AOC 8 A/B during September 2014 and January 2015.

Buildings 10, 200, and 205 have a subslab vapor mitigation system in place. Building 18 also

has a subslab vapor mitigation system in place but the building has been vacant for years and the

system has not been running. EPA reportedly has plans to reoccupy Building 18 in the future

although the re-occupancy timeframe is unclear. Table ES-3 presents a summary of the recent

sampling results along with proposed actions for Groundwater AOC 8.

Building 10 – VOCs have not been migrating into the indoor air from the subslab at levels of

concern. This is due to the effectiveness of the subslab mitigation system. Semi-annual

monitoring of the remedial system has demonstrated that the system is operating properly.

SSSG Results – TCE exceeded its nonresidential site-specific soil gas screening level in

September 2014 at one location. The TCE levels in January 2015 were less than the

ES-6

screening level. There were no other VOCs detected above the nonresidential screening

levels that were sampled during the September 2014 and January 2015 sampling events at

Building 10.

IA Results – During September 2014, TCE (10 µg/m3) exceeded its nonresidential site-

specific screening level at one location. TCE was detected at 31 µg/m3 at the paired soil

gas sample location. The TCE IA level is about one-third of the level found in the SSSG.

One would expect significantly more attenuation from the SSSG and a lower IA level

based on the SSSG level that was observed if the TCE source was from the subslab. The

empirical data suggest that the TCE exceedance in IA is indicative of an indoor source

and not the VI pathway. Further, the TCE results from September 2014 from the other

IA sample location were non-detect. TCE was non-detect in the January 2015 sample

results. There were no other VOC concentrations detected in indoor air samples above the

site-specific or NJDEP VIG screening levels.

USACE recommends continuing semi-annual monitoring for another year at which time the data

will be evaluated to determine the need for further sampling, frequency of sampling, and

operation of the mitigation system. USACE performed an optimization study (Geosyntec, 2015c)

of the mitigation system in May 2015 to determine the proper flow-rate and operation of the

mitigation system and need for future sampling (see Appendix E).

As a result of the optimization evaluation, a reduction in the SSD system operation is

appropriate. There is a potential for fluctuations in the building pressure over time that could

potentially result in intermittent, short-term TCE concentrations of concern. Therefore, ongoing

operation at a reduced level is prudent. Of the three vents pipes that comprise the SSD system,

SSD-2 has the greatest mass flux so it would be appropriate to focus SSD optimization efforts at

SSD-2. It is recommended that the current SSD system be modified to operate with only

extraction point SSD-2. NJDEP provided comments on the Building 10 optimization study on 14

July 2015 (see Appendix E). NJDEP indicated that the proposed modification to the SSD system

is acceptable and provided recommendations regarding the next steps in the system optimization

process.

Building 18 – This building was last sampled in September 2011. Following the September

2011 sampling event, the building was vacated and the utilities were turned off during the winter

of 2012. USACE and NJDEP agreed to halt sampling as a result. Although no definitive plans

exist, EPA reported that Building 18 could be re-occupied in the future. As such, USACE

ES-7

collected samples from EPA Building 18 in September 2014 and January 2015. The results of the

September 2014 and January 2015 sampling indicate that VOCs have not been migrating into the

indoor air at concentrations of concern.

SSSG Results – TCE exceeded its nonresidential site-specific soil gas screening levels in

September 2014 at three of four locations. TCE did not exceed its soil gas screening level

in January 2015. There were no other VOCs detected above the nonresidential screening

levels that were sampled during the September 2014 and January 2015 sampling events at

Building 18.

IA Results – TCE was not detected in any of the IA samples collected in September 2014

and January 2015. There were no other VOC concentrations detected in indoor air

samples above the site-specific or NJDEP VIG screening levels.

USACE will consult with EPA to determine the future use plans for Building 18. If it is

determined that Building 18 is planned for near-term future use, another round of semi-annual

monitoring will be performed at which time the data will be evaluated to determine the need for

further sampling.

Building 200 – Based on the analytical data from September 2014 and January 2015 which

shows that while there were detections of TCE above nonresidential site-specific screening levels

for subslab soil gas, it appears that levels of TCE in the indoor air were less than the

nonresidential screening level.

SSSG Results – During September 2014 and January 2015, TCE concentrations were

detected in soil gas above the nonresidential site-specific screening level. No other VOCs

were detected above their screening levels for subslab soil gas.

IA Results – TCE was not detected in September 2014. The two locations sampled in

January 2015 had detected TCE concentrations that were less than the site-specific

nonresidential level. None of the other VOCs had concentrations detected above the

nonresidential site-specific or the NJDEP VIG screening levels at the indoor air locations.

The vapor intrusion pathway may be complete but the indoor air levels are not a concern. It is

recommended that the monitoring continue at the same semi-annual frequency for the next year.

USACE will evaluate the data to determine the optimum flow-rate and operation of the

mitigation system and need for future sampling. This optimization study was performed in the

summer of 2015.

ES-8

Building 205 – The results from the September 2014 and January 2015 sampling events are

summarized by below.

SSSG Results – During the September 2014 and January 2015 sampling events, TCE was

detected in all of the samples. However, TCE exceeded its site-specific nonresidential

soil gas screening level at only one location. Additionally, chloroform was detected at a

concentration above both the nonresidential NJDEP VIG screening levels at one location

in September 2014. There were no other VOC concentrations detected above NJDEP

VIG nonresidential screening levels in the subslab soil gas samples.

IA Results – TCE was not detected in any of the samples collected during September

2014 and January 2015. There were no other VOCs detected in indoor air samples above

the site-specific or NJDEP VIG screening levels.

The VI exposure pathway for TCE, the only COPC for AOC 8 A/B, is incomplete and

successfully mitigated as demonstrated by the non-detect sample results in the IA samples.

Continued semi-annual subslab and indoor air sampling of this building is recommended for the

next year. USACE will evaluate the data to determine future sampling needs.

Building 209 – IAQ Report #10 (Avatar, 2014) recommended that no further sampling was

needed at Building 209 due to a consistent lack of VOC concentrations in IA and SSSG greater

than nonresidential screening levels.

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102FERN-SG-03

102FERN-SG-02

102FERN-SG-01

160-6 (Outside)

165-8(OutsideDC)

018-SG-04

200-BG-01

CP4-BG-01

018-SG-07

CP4-SG-1 CP4-SG-2

CP4-SG-3

Amax 02165-1165-4

Building 423

Building 102

Building 427

Building 424

Building 151

Building 209 Building 205

Building 165

Building 238

Building 18

Building 10

Building 160

Building 150

CampusPlaza 4

CampusPlaza 5

AOC2

AOC8AB

AOC4A

AOC6B

AOC10

AOC6A

AOC9

AOC8C

AOC1

AOC6C

AOC4B

AOC8D

AOC7

AOC3

AOC7AOC7

E x c l u s i o n A r e aE x c l u s i o n A r e a

µ300 0 300 600

Scale in FeetSource:Aerial Photos from NJ Imagery on njwebmap.state.nj.us/njimagery/Natural dated 2012.

Document Name: IAQ11_ES-1_Program-Overview_020116

U.S. Army Corps of EngineersFormer Raritan Arsenal Site, Edison, NJ

FIGURE ES-1INDOOR AIR QUALITY PROGRAM OVERVIEW

Legendk Ambient Air Sample Locations!( Indoor Air Sample Locations!? Subslab Soil Gas Sample Locations") Vapor Recovery Sample Locations

Groundwater AOC BoundaryBuilding With Suslab Vent Depressurization

Building With On-Going MonitoringFormer Raritan Arsenal BoundaryExclusion AreaDOD Source Removal AreasArea4 (Capped - not evaluated)

Building Screened Out of InvestigationBased on Groundwater DataBuilding Requiring No Further Action Based on Soil Gas and Indoor Air Data

VI pathway may need to bere-evaluated if the buildinguse changes.

Tables

FUDS Project Number CO2NJ0084-02IAQ Report #11_ES Tables_Final 1 of 3 2/4/2016

Table ES-1Groundwater AOC 2 Sampling Result and Proposed Action Summary

IAQ Report #11Former Raritan Arsenal

Building Results Summary Proposed Action

160 Fieldcrest The subslab vapor mitigation system was inspected to determine that the system was working properly. A copy of the annual inspection report is located in Appendix A (Geosyntec, 2015a).

Continue annual inspections of the subslab vapor mitigation system with 5-year sampling frequency. The next sampling event is scheduled for 2017.

A workplan was developed by USACE to seek NJDEP concurrence on a protocol to allow for a full or partial vapor mitigation system shutdown at 165 Fieldcrest Avenue, such that the final evaluation phase of the soil vapor intrusion pathway may be completed. The full report summarizing this information along with comments from NJDEP and responses from USACE can be found in Appendix B (USACE, 2014).

SSSG Results – None of the SSSG sample results from the recent sampling for PCE and TCE were greater than the soil gas screening levels. The chloroform SSSG sample result from one location collected in September 2014 exceeded the NJDEP VIG nonresidential soil gas screening level. The chloroform SSSG level in the March 2015 sample collected from the same location was less than the screening level. No other VOCs were detected in subslab soil gas at concentrations greater than the site-specific or the NJDEP VIG screening levels.

VR Results – There were no exceedances in the VR samples collected during the September 2014 and March 2015 sampling events.

IA Results – PCE and TCE were not detected in the September 2014 IA samples. Low levels of PCE and TCE were detected in March 2015. All detected PCE and TCE concentrations were less than the screening levels. 1,2-Dichloroethane slightly exceeded its screening level at one location in September 2014. Other VOCs detected in indoor air at concentrations above the screening levels included benzene, ethylbenzene, and chloroform. Benzene and ethylbenzene exceeded screening levels in September 2014 and March 2015. Chlorform exceeded screening levels in March 2015 only.

SSSG Results - TCE concentrations in SSSG samples collected in September 2014 and January 2015 exceeded nonresidential site-specific soil gas screening levels at two of five sample locations. The recent TCE levels are similar to those that have been observed previously. No other site COPCs had SSSG levels greater than screening levels. Chloroform slightly exceeded its NJDEP screening level at a single location.

IA Results - None of the site COPCs were detected in the IA samples collected during the September 2014 sampling event. PCE and TCE levels were detected in January 2015 but the levels were less than the nonresidential indoor air screening levels. There has been a significant reduction in TCE levels in IA when compared to previous sampling events. The previous TCE levels were due to a previous tenant’s undocumented use of TCE. Since the departure of that tenant from Campus Plaza 4, TCE has not been an indoor air concern.

165 Fieldcrest

USACE conducted an intentional, partial shutdown of the SSD system in August 2014 in advance of the planned September 2014 sampling event. The sample results from September 2014 for the AOC 2 COPCs were not a concern even during the partial shutdown. Upon completion of the September 2014 sampling event, the system was turned back on. USACE submitted a work plan (USACE, 2014) to NJDEP to seek concurrence on a protocol to allow for a full or partial SSD system shutdown at 165 Fieldcrest Avenue, such that the final evaluation phase of the soil vapor intrusion pathway may be completed (see Appendix B). The next steps to be taken at 165 Fieldcrest are based on the scenarios outlined in the workplan.

Campus Plaza 4USACE plans to reduce the sampling frequency. The next sampling event is planned for winter 2016 at which time the data will be reevaluated, as will the determination of the need and frequency of future sampling events.





102-168 FernwoodThe subslab vapor mitigation system was inspected at 102-168 Fernwood and it was determined that the system was working properly. A copy of the annual inspection report is located in Appendix D (Geosyntec, 2015b).

Continue annual inspections of the subslab vapor mitigation system with 5-year sampling frequency. USACE continues to conduct a monthly visual inspection including measuring the vacuum at each suction point to verify the system is operating. The next sampling event is scheduled for 2017.





SSSG Results - TCE exceeded site-specific soil gas screening level in September 2014 at one location. The TCE levels in January 2015 were less than screening levels. There were no other VOCs detected above the nonresidential screening levels during the September 2014 and January 2015 sampling events at Building 10.

IA Results - During September 2014, TCE (10 µg/m3) exceeded its nonresidential site-specific screening level at one location (010-3). TCE was detected at 31 µg/m3 at the paired soil gas sample location. The TCE IA level is about one-third of the level found in the SSSG. One would expect significantly more attenuation and a ower IA level based on the SSSG levels that were observed if the TCE source was from the subslab. The empirical data suggest that the TCE exceedance in IA is indicative of an indoor source and not the VI pathway. Further, the TCE results from September 2014 from the other IA sample location were non-detect and TCE was non-detect in the January 2015 sample results. There were no other VOC concentrations detected in indoor air samples above the site-specific or NJDEP VIG screening levels.

SSSG Results - TCE exceeded its nonresidential site-specific soil gas screening levels in September 2014 at three of four sample locations. There were no other VOCs detected above the nonresidential screening levels that were sampled during the September 2014 and January 2015 sampling events at Building 18.

IA Results - TCE was not detected in any of the IA samples collected in September 2014 and January 2015. There were no other VOC concentrations detected in indoor air samples above the site-specific or NJDEP VIG screening levels. SSSG Resuts - During September 2014 and January 2015, TCE concentrations were detected in soil gas above the nonresidential site-specific screening level. No other VOCs were detected above their screening levels for subslab soil gas.

IA Results - TCE was either not detected or the detected levels were less than the site-specific nonresidential level. None of the other VOCs had concentrations detected above the nonresidential site-specific or the NJDEP VIG screening levels at the indoor air locations.

SSSG Results - During the September 2014 and January 2015 sampling events, TCE was detected in all of the samples. TCE exceeded its the site-specific nonresidential soil gas screening level at one location. Additionally, chloroform was detected at a concentration above the nonresidential NJDEP VIG screening level at one location in September 2014. There were no other VOC concentrations detected above NJDEP VIG nonresidential screening levels in the subslab soil gas samples.

IA Results - TCE was not detected in any of the samples collected during September 2014 and January 2015. There were no other VOCs detected in indoor air samples above the site-specific or NJDEP VIG screening levels.

Building 209

Building 200

It is recommended that the monitoring continue at the same semi-annual frequency for the next year (summer 2015 and winter 2016). USACE will evaluate the data to determine the proper flow-rate and operation of the mitigation system and need for future sampling. This optimization study was performed in the summer of 2015.

Building 10

USACE recommends continuing semi-annual monitoring for another year (summer 2015 and winter 2016) at which time the data will be evaluated to determine the need for further sampling, frequency of sampling, and operation of the mitigation system. USACE performed an optimization study of the mitigation system in May 2015 and the results of the study along with comments from NJDEP can be found in Appendix E.

Building 205Continued semi-annual subslab and indoor air sampling of this building is recommended for the next year (summer 2015 and winter 2016). USACE will evaluate the data to determine future sampling needs.

Building 18

USACE will consult with EPA to determine the future use plans for Building 18. If it is determined that Building 18 is planned for near-term future use, another round of semi-annual monitoring will be performed at which time the data will be evaluated to determine the need for further sampling.

Based on there being no site COPCs above the site-specific screening levels for a number of sampling rounds, the USACE recommended no further sampling at Building 209 in Indoor Air Quality Report #10 (Avatar, 2014).


Indoor Air Quality Report #11


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February 2016

1. INTRODUCTION AND OBJECTIVES

Avatar Environmental, LLC (Avatar) evaluated the potential for vapor intrusion (VI) into

buildings from contaminated groundwater at the former Raritan Arsenal site in Edison, NJ. This

Indoor Air Quality (IAQ) Report #11 is a continuation of the ongoing IAQ monitoring program

and was prepared for the U.S. Army Corps of Engineers (USACE) New York and New England

Districts under USACE Contract W912WJ-11-D-0002, Delivery Order 0005.

The objectives of this report are:

To summarize and evaluate indoor air, subslab soil gas, and historical groundwater

sampling results at each of the buildings recommended for sampling in Indoor Air

Quality Report #10 (Avatar, 2014);

To assess whether a complete VI exposure pathway exists; and

To provide recommendations on the need for further action.

This report presents the analytical results for buildings sampled during September 2014 and

January/March 2015 within Groundwater Areas of Concern (AOCs) 2 and 8 A/B. These

Groundwater AOCs have historically exhibited exceedances of the groundwater screening levels

in the New Jersey Department of Environmental Protection’s (NJDEP) Vapor Intrusion

Guidance (VIG) (March 2013). Further, an update is provided in this report for work completed

in Groundwater AOC 6. Table 1-1 provides a status of the vapor intrusion concerns for all of the

Groundwater AOCs.

As recommended in previous reports (Weston, 2006a, 2008a, and 2012), the buildings associated

with Groundwater AOCs 4 and 10 do not require any further investigation or action and are not

discussed in this report.

1.1 REGULATORY REQUIREMENTS AND AGENCY COORDINATION

Activities at the former Raritan Arsenal are being administered by the USACE under the Defense

Environmental Restoration Program/Formerly Used Defense Sites (DERP/FUDS) program. The

Army is the executive agent on behalf of the Department of Defense (DOD) charged with

meeting all applicable environmental restoration requirements at FUDS, regardless of which




1-2

February 2016

DOD branch previously owned or used the property. The Secretary of the Army further

delegated the program management and execution responsibility for FUDS to the USACE.

In carrying out its responsibilities, the USACE must comply with the DERP statute (10 USC

2701 et seq.), the Comprehensive Environmental Response, Compensation and Liability Act

(CERCLA, 42 USC § 9601 et seq.), Executive Orders (EOs) 12580 and 13016, the National Oil

and Hazardous Substances Pollution Contingency Plan (NCP), and all applicable DOD (e.g.,

DOD Management Guidance for the DERP) and Army policies in managing and executing the

FUDS program.

For FUDS properties not included on the National Priorities List (NPL), the DERP statute

requires that response actions addressing DOD hazardous substances, pollutants, and

contaminants be conducted in accordance with CERCLA. In all other cases, CERCLA is DOD’s

preferred framework for environmental restoration. States or tribes are generally the lead

regulator for environmental investigations and responses at non-NPL FUDS. DOD maintains

lead agency authority at non-NPL FUDS, coordinates project activities with the lead regulatory

agency, and provides notice and opportunity for comment to the appropriate state, tribal, and

local authorities.

The former Raritan Arsenal property was identified as eligible for action under the FUDS

program. The property is not on the NPL. Therefore, the NJDEP is the lead regulatory agency.

Under the DERP-FUDS program, only known or potential contamination or hazards on the

former Raritan Arsenal attributable to former DOD activities (prior to October 17, 1986) can be

addressed.

1.2 BACKGROUND

USACE is conducting various Remedial Investigation/Feasibility Study (RI/FS) and Remedial

Design/Remedial Action (RD/RA) activities at the former Raritan Arsenal under DERP-FUDS.

Through these activities, USACE and NJDEP identified Groundwater AOCs containing volatile

organic compounds (VOC) that required evaluation for indoor air quality as presented in the

Final Groundwater Natural Attenuation Report (NAR) dated May 2003 (Weston, 2003a) and in




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February 2016

the IAQ Evaluation (Steps One through Four) (Weston, 2005a) and the Final Supplemental

Groundwater Data Report (Weston, 2006b).

In a March 2003 comment letter concerning the Draft Final Groundwater NAR (Weston, 2002),

NJDEP agreed to natural attenuation as a means of addressing remaining groundwater

contamination at the former Raritan Arsenal, provided no VI pathway existed in buildings

located above the plumes. NJDEP requested USACE to evaluate potential vapor risks at 151

Fieldcrest Avenue, 165 Fieldcrest Avenue, and other buildings near monitoring well MW-114,

which is considered to be a “source well” of chlorinated solvents located within Groundwater

AOC 2 and historically has exhibited the highest detected concentrations of VOCs in

groundwater at the former Raritan Arsenal.

In May 2003, prior to the initiation of USACE’s indoor air program, the property owner at 165

Fieldcrest conducted indoor air sampling that indicated the presence of tetrachloroethylene

(PCE). Follow-up indoor air and subslab soil gas samples collected by USACE in June 2003

showed no PCE in indoor air, but did show PCE in the accompanying subslab soil gas samples.

A subslab depressurization (SSD) system was subsequently installed jointly by USACE and

NJDEP. This system is still in operation as of April 2015.

As a result of the findings at 165 Fieldcrest, awareness of the potential for intrusion of VOCs

from soil and/or groundwater into indoor air at the former Raritan Arsenal was heightened. The

NJDEP requested that USACE evaluate the VI pathway for all other Groundwater AOCs at the

former Raritan Arsenal.

In October 2004, NJDEP agreed that assessment of the indoor air exposure pathway at the

former Raritan Arsenal should be performed in accordance with the Approach for Evaluating

Potential IAQ Impacts (USACE, 2004), referred to hereafter as “The IAQ Approach”. In

accordance with The IAQ Approach, USACE began evaluating buildings located within 100 feet

(ft) of the Groundwater AOCs.

The Groundwater AOCs originally identified by USACE and NJDEP to be evaluated for IAQ

were narrowed from seven to three since the primary contaminants of potential concern (COPCs)




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February 2016

in groundwater are VOCs, mainly trichloroethylene (TCE) and PCE (see Table 1-1).

Groundwater AOCs 2, 8, and 10 became the focus and were evaluated due to historical

concentrations of VOCs in groundwater. In addition, Groundwater AOC 2 includes a building

(165 Fieldcrest Avenue) with sensitive receptors (e.g., daycare center). Subsequent to the

evaluation of Groundwater AOCs 2, 8, and 10, Groundwater AOCs 4 and 6 were evaluated for

the potential of VI into indoor air in accordance with work plans developed in accordance with

the NJDEP’s VIG that was current at the time. Table 1-1 presents the VI status for all of the

Groundwater AOCs.

1.2.1 Previous Reporting

A series of IAQ reports have been developed over the past decade as part of the ongoing

monitoring program. Each report discusses the buildings within the Groundwater AOCs that

were evaluated and monitored along with the recommendations based on the analytical results

for future action by USACE. The following is a list of the IAQ reports:

IAQ Report (Weston, 2005b);

IAQ Report #2, (Weston, 2006a);

IAQ Report #3, (Weston, 2008a);

IAQ Report #4, (Shaw [Shaw Environmental, Inc.], 2009);

IAQ Report #5, (Shaw, 2010a);

IAQ Report #6, (Shaw, 2010b);

IAQ Report #7 (Weston, 2012);

IAQ Report #8 (Weston, 2014b);

IAQ Report #9 (Weston, 2014a); and

IAQ Report #10 (Avatar, 2014).




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February 2016

1.2.1.1 Groundwater AOCs Requiring No Further Action for Vapor Intrusion

The recommendations from the previous IAQ reports have helped to focus the ongoing IAQ/VI

monitoring program. No further action for VI was recommended for the three Groundwater

AOCs listed below based on existing analytical data that were below levels of concern.

Groundwater AOC 4 – IAQ Report #3 (Weston, 2008a) recommended no further

action at buildings within Groundwater AOC 4 based on existing groundwater, soil

gas, and indoor air levels. NJDEP agreed with this recommendation.

Groundwater AOC 6 – IAQ Report #4 (Shaw, 2009) recommended no further action

for all buildings within Groundwater AOC 6 except for 102-168 Fernwood Avenue

based on existing soil gas and indoor air levels. Installation of a vapor mitigation

system was recommended for 102-168 Fernwood along with monitoring on a 5 year

frequency.

Groundwater AOC 10 – IAQ Report #2 (Weston, 2006a) recommended no further

action was necessary at buildings within Groundwater AOC 10 due to insignificant

levels of existing soil gas and indoor air levels. NJDEP agreed with this

recommendation.

Groundwater AOCs 1, 3, 5, and 7 require no further VI action because the groundwater

contamination is not related to former DOD activities. Lastly, there are no volatile contaminants

associated with AOC 9. Therefore, there are no VI concerns for AOC 9.

1.2.1.2 IAQ Report #7 Recommendations

The following are the recommendations from IAQ Report #7 based on the sampling activities

conducted during September 2010 and April 2011 by Groundwater AOC:

Groundwater AOC 2

160 Fieldcrest Avenue – Continue annual inspection of the vapor mitigation system

with a 5-year sampling frequency for indoor air and subslab soil gas. The next

sampling round scheduled for 2017.

165 Fieldcrest Avenue – Continue semi-annual sampling to monitor and confirm that

the vapor mitigation system is operating effectively.

Campus Plaza 4 – Continue semi-annual sampling to evaluate the potential for the VI

pathway.




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February 2016

Groundwater AOC 6

102-168 Fernwood Avenue – Perform passive sampling of the mitigation system only

and submit results in a separate Interim Progress Report and Performance Monitoring

Report for the subslab venting system.


Building 10 – Continue semi-annual sampling with an emphasis on ensuring the

subslab system is operating properly.







Building 209 – Continue semi-annual sampling.


The following are the recommendations of IAQ Report #8 (Weston, 2014b) based on sampling

activities performed during September 2011 and April 2012 by Groundwater AOC:

Groundwater AOC 2

160 Fieldcrest – Continue annual inspections of the vapor mitigation system with 5-

year sampling frequency. Last sampling event was conducted in November 2011 and

next sampling event is scheduled for 2017.

165 Fieldcrest – Continued monitoring for the next year (summer 2012 and winter

2013) is recommended to monitor the effectiveness of the subslab mitigation system.

USACE takes ownership of the vapor mitigation system beginning in February 2013.

Additionally, USACE will begin evaluations for potential modifications to the vapor

mitigation system beginning in 2013.

Campus Plaza 4 – Since there is a potential for a complete exposure pathway from

groundwater to soil gas to indoor air, continued monitoring for this building was

recommended. USACE will continue to monitor both subslab and indoor air semi-

annually (summer 2012 and winter 2013) and then re-evaluate. Additionally, a

separate study will be conducted in 2013 to investigate likely sources of indoor air




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February 2016

contaminants using isotopes to distinguish between indoor air sources and subslab

sources.

Groundwater AOC 6

102-168 Fernwood Avenue – Continue annual inspections of the vapor mitigation

system with 5-year sampling frequency. Last sampling event was conducted in June

2012 and next sampling event is scheduled for 2017. Continue monthly visual

inspection of subslab system by USACE including vacuum checks.


Building 10 – Although there is not a complete exposure pathway, continued semi-

annual monitoring was recommended (summer 2012 and winter 2013) to confirm

proper operation of the mitigation system. After a year, the data will be evaluated to

determine sampling needs, sampling frequency, and if continued operation of the

system is necessary.

Building 18 – Sample results from this investigation do not indicate a complete VI

pathway. Since the building is no longer in use and has been vacated, USACE and

NJDEP agreed that monitoring will not continue.

Building 200 – USACE will continue to monitor both subslab and indoor air semi-

annually over the next year (summer 2012 and winter 2013). After a year, the data

will be evaluated to determine sampling needs, sampling frequency, and if continued

operation of the system is necessary. Continue monthly inspection of subslab system

including vacuum and velocity checks to ensure system is working.

Building 205 – Continued semi-annual subslab and indoor air sampling of this

building is recommended for the next year (summer 2012 and winter 2013). After a

year, the data will be evaluated to determine sampling needs, sampling frequency,

and if continued operation of the system is necessary.


annual monitoring of this building is recommended for the next year (summer 2012

and winter 2013). After a year, the data will be evaluated to determine sampling

needs, sampling frequency, and if continued operation of the system is necessary.


The following are the recommendations of IAQ Report #9 (Weston, 2014a) based on sampling

activities conducted during October 2012 and February 2013 by Groundwater AOC:

Groundwater AOC 2




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February 2016


year sampling frequency. Last sampling event was conducted in November 2011 and

next sampling event is scheduled for 2017.



USACE will continue evaluations for potential modifications to the vapor mitigation

system that began in 2013.

Campus Plaza 4 – Continued monitoring for this building is recommended (summer

2013 and winter 2014) and then re-evaluate.

Groundwater AOC 6



2012 and next sampling event is scheduled for 2017. Continue monthly visual

inspection of subslab system by USACE including vacuum checks.



annual monitoring is recommended (summer 2013 and winter 2014) to confirm



system is necessary.




operation of the system is necessary.


building is recommended for the next year (summer 2013 and winter 2014). The

vapor mitigation system for Building 205 will be evaluated for system optimization.

Building 209 – USACE recommended no further sampling at this building based on

an incomplete pathway from groundwater to SSSG.


The following are the recommendations of IAQ Report #10 (Avatar, 2014) based on sampling

activities conducted during September/October 2013 and February 2014 by Groundwater AOC:

Groundwater AOC 2




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February 2016


year sampling frequency. Continue monthly visual inspection of subslab system by

USACE including vacuum checks. Last sampling event was conducted in November

2011 and next sampling event is scheduled for 2017.



USACE will continue evaluations for potential modifications to the vapor mitigation

system that began in 2013. USACE conducted a partial shutdown of the SSD system

in August 2014 in advance of the planned September 2014 sampling event. Upon

completion of the September 2014 sampling event, the system was turned back on.

USACE and NJDEP are discussing the conditions for system termination. If the data

collected in September 2014 and winter 2015 indicate that operation of the SSD is

necessary, it is recommended to replace the current SSD blowers with radon fans,

which are smaller and more energy efficient.

Campus Plaza 4 – Continued monitoring for this building is recommended (summer

2014 and winter 2015) and then re-evaluate.

Groundwater AOC 6



2012 and next sampling event is scheduled for 2017.



annual monitoring is recommended (summer 2014 and winter 2015) to confirm



system is necessary. USACE will also perform an optimization study of the

mitigation system to determine the proper flow-rate and operation of the mitigation

system and need for future sampling.

Building 18 – This building is not discussed in IAQ Report #10 because it has been

vacant and was not sampled in summer 2013 or winter 2014. EPA reportedly has

plans to re-occupy Building 18 at some point in the future. As a result, Building 18

was planned to be sampled in summer 2014 and winter 2015.




operation of the system is necessary.




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February 2016


building is recommended for the next year (summer 2014 and winter 2015). The

vapor mitigation system for Building 205 will be evaluated for system optimization.

Building 209 – USACE recommended no further sampling at this building based on

an incomplete pathway from groundwater to SSSG.

This report (IAQ Report #11) presents the findings of investigations conducted during the period

of September 2014 and January/March 2015. Table 1-2 summarizes the buildings and tenants

included in the investigation described in this report.

1.3 VAPOR MIGRATION PATHWAY

This report evaluates the potential migration pathway of VOCs from groundwater and soils to

indoor air. Due to their high vapor pressures, VOCs dissolved in groundwater readily volatilize

from the groundwater and move by diffusion and advection (which is actually the more dominant

mechanism) through the capillary and unsaturated zones of the soil, eventually discharging to the

atmosphere at the ground surface. Lateral and vertical migration of soil gas occurs in response to

variations in pressure and can be quite complex. For example, high-pressure weather systems

tend to keep soil gas in the subsurface, while low pressure weather systems allow the soil gas to

move readily into the atmosphere. Variations in soil texture and permeability greatly affect the

movement of soil gas, as do the presence of underground utilities and other structures that may

act as conduits.

In areas where the ground surface is covered by a building or paved surface, VOCs in soil gas

can become trapped beneath these structures resulting in a mounding effect. These vapors are

capable of entering structures through minute cracks in foundations, pipe, or utility penetrations

through the concrete floor slabs or walls, and through foundation drains.

Soil gas entry into structures is usually the result of pressure differentials which are mainly

caused by indoor-outdoor thermal differences, wind loading on structures, and unbalanced

ventilation systems that can result in the depressurization of a building (Hodgson, et al. 1992).

Most buildings maintain an indoor air pressure that is often lower than outdoor air. Under this

negative pressure, subsurface soil gas may be drawn to cracks in the basement or slab floor and




1-11

February 2016

into the building. A building in this situation has an “area of influence” which may draw

subsurface soil gas toward the building slab from surrounding areas.

Many factors influence the rate of soil gas entry into a building at any given time. Increased soil

moisture, which often occurs in the spring after the ground thaws and snow melts, can drive soil

gas from surrounding areas into the relatively dry soils beneath structures, increasing the

potential for vapor infiltration. Heavy rainfall can also result in a lens/layer of clean water at the

water table reducing the source soil gas concentrations. Frozen ground can also limit the vertical

migration of subsurface gases and increase mounding effects and lateral migration.

Under heating conditions, building basements or the first floor above the concrete slab can be

under less pressure relative to the surrounding soil (Hodgson, et al. 1992). This is sometimes

referred to as the “stack or chimney effect,” and can greatly increase the rate of soil gas

infiltration. For the above reasons, winter and spring conditions tend to promote the infiltration

of soil gas into structures and generally represent “worst-case” conditions. As indicated in

Section 6.1.3.3 of the NJDEP VIG (2013), indoor air samples collected from November through

March are required prior to making remedial decisions as this timeframe is considered as being

most representative of the presumed “worst case” conditions.

1.4 USACE INDOOR AIR EVALUATION PROCESS

The IAQ Approach for the former Raritan Arsenal establishes the priorities for further

investigation of potential IAQ impacts (Figure 1-1). The IAQ Approach, which has been agreed

to by the NJDEP, is a step-wise approach to evaluate the potential for IAQ impacts from

contaminated groundwater and residual soil sources at the former Raritan Arsenal. Steps One

through Four of the IAQ Approach are:

Step One: Complete preliminary inventory of buildings potentially affected by

Groundwater AOC plumes.

Step Two: Develop a conceptual model for each Groundwater AOC plume.

Step Three: Determine contaminants of potential concern (COPC) for further

evaluation by comparing historical groundwater data to Table 2C-GW screening




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February 2016

benchmarks from the Draft Guidance for Evaluating the Vapor Intrusion to Indoor

Air Pathway from Groundwater and Soils (EPA, 2002).

Step Four: Prioritize Groundwater AOC plumes to be evaluated for potential VI based

on sensitive receptors and historical groundwater data. Expedite an evaluation process

where groundwater concentrations are 50 times greater than Table 2C-GW screening

benchmarks. It should be noted that going forward, the decision process set forth in

the NJDEP VIG will be used to determine the need for expedited review of the

potential for VI at the former Raritan Arsenal, if specific Groundwater AOCs and the

buildings associated with those AOCs have not yet been evaluated.

The information gathered under Steps One through Four provide a basis for Steps Five through

Twelve of the IAQ Approach.

Step Five: Using existing groundwater quality data, assess whether there is potential

for a complete VI pathway from groundwater to indoor air and evaluate the potential

IAQ impacts. If groundwater data indicate the potential for VI concerns (i.e., exceed

screening criteria), then go to Step Six.

Step Six: Conduct subslab soil gas sampling.

Step Seven: Compare soil gas concentrations to the subslab soil gas screening

benchmarks. Predict concentrations of VOCs in indoor air based on subslab soil gas

data. If soil gas data indicate potential exceedance of residential indoor air screening

benchmarks, then go to Step Eight. While The IAQ Approach originally required

comparison of site-specific data to the EPA Generic Screening Benchmarks for

Target Indoor Air Concentrations (EPA Table 2C [EPA, 2002]) criteria, this approach

was developed prior to publication of the NJDEP VIG. Moving forward, site-specific

data have been, and will continue to be, compared with the most recent screening

levels provided in the NJDEP VIG and site-specific risk-based screening levels for

select COPCs (see Appendix I).

Step Eight: Evaluate indoor air impacts by conducting sampling to determine if

indoor VOC concentrations exceed ambient air sample results and/or residential

indoor air limits. Identify other buildings for soil gas sampling.

Step Nine: Perform confirmatory sampling of subslab soil gas and indoor air at the

building (to assess temporal variability and verify the initial findings).

Step Ten: If the confirmatory sampling verifies the initial results, evaluate remedial

alternatives for the building.

Step Eleven: Implement remedy for the building and collect post-remedial indoor air

and subslab soil gas samples to document system effectiveness.




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February 2016

Step Twelve: Prepare report documenting process and results for the NJDEP.

FIGURES

Tables

FUDS Project Number CO2NJ0084-02IAQ Report #11_Sect1 Tables_Final 1 of 2 2/4/2016

Table 1-1Status of Vapor Intrusion Concerns for Groundwater AOCs


Groundwater AOC Status by BuildingBuildings with Mitigation Measures

(only buildings with mitigation systems in place are listed)AOC 1 Groundwater contamination is not related to DOD activities; no VI concerns. NoneAOC 2 Three buildings (160 Fieldcrest, 165 Fieldcrest, and Campus Plaza 4) subject to

ongoing monitoring. 165 Fieldcrest and Campus Plaza 4 being monitored on a semi-annual basis. 160 Fieldcrest being monitored every 5 years.

Other buildings including Campus Plaza 1, Campus Plaza 2, Campus Plaza 3, Campus Plaza 5, and 151 Fieldcrest require no further action based on existing soil gas and indoor air data.

160 Fieldcrest: passive mitigation system installed in 2008.165 Fieldcrest: SSD system installed in 2003.

Campus Plaza 5: SSD system installed in 2004 as a precautionary measure by property owner.

AOC 3 Groundwater contamination is not related to DOD activities; no VI concerns. NoneAOC 4 USACE believes that the groundwater contamination is not related to DOD

activities. However, no further action is required for any buildings associated with AOC 4 based on existing groundwater, soil gas, and indoor air data.

None

AOC 5 Groundwater contamination is not related to DOD activities; no VI concerns. NoneAOC 6 102-168 Fernwood Avenue subject to ongoing monitoring every 5 years.

Other buildings require no further action based on existing soil gas and indoor air data.

102-168 Fernwood Avenue: SSD system installed in 2009. Electric fans were replaced by solar powered fan in 2011.

AOC 7 Groundwater contamination is not related to DOD activities; no VI concerns. NoneAOC 8 Three buildings within AOC 8 A/B (Building 10, Building 200, and Building 205)

subject to ongoing monitoring on a semi-annual basis.

No further action is required for Building 209.

No other buildings within AOC 8 require further action based on existing soil gas and indoor air data.

Building 10: SSD system installed in 2005.Building 200: SSD system installed in 2005.Building 205: SSD system installed in 2005.Building 18: SSD system installed in 2005. Building has been vacant and SSD system has not been running.

AOC 9 Buildings require no further action based on existing groundwater data. NoneAOC 10 Building requires no further action based on existing soil gas and indoor air data. None

SSD = subslab depressurization


Table 1-2List of Tenants and Addresses


AOC Building Tenant AddressMol America, Inc. 160 Fieldcrest Avenue, Edison, NJ 08837

Priority Express Courier 160 Fieldcrest Avenue, Edison, NJ 08837Clayton Group Services/Bureau Veritas 160 Fieldcrest Avenue, Edison, NJ 08837

Miller's Rentals 160 Fieldcrest Avenue, Edison, NJ 08837Peppermint Tree Child Care Center 165 Fieldcrest Avenue, Edison, NJ 08837

Cembre 165 Fieldcrest Avenue, Edison, NJ 08837Happy Forest 165 Fieldcrest Avenue, Edison, NJ 08837

Rockwell Automation 165 Fieldcrest Avenue, Edison, NJ 08837Mackay Communications 165 Fieldcrest Avenue, Edison, NJ 08837

AAI Pharma 165 Fieldcrest Avenue, Edison, NJ 08837Federal Business Centers 300 Raritan Center Parkway, Edison, NJ 08837

Vacant 280 Raritan Center Parkway, Edison, NJ 08837Fabrictex 278 Raritan Center Parkway, Edison, NJ 08837

OnX Enterprise Solutions 266 Raritan Center Parkway, Edison, NJ 08837AOC 6 102-168 Fernwood Computershare 118 Fernwood Avenue, Edision, NJ 08837

USEPA Building 10 USEPA Region 2 2890 Woodbridge Avenue, Edison, NJ 08837USEPA Building 18 USEPA Region 2 2890 Woodbridge Avenue, Edison, NJ 08837USEPA Building 200 USEPA Region 2 2890 Woodbridge Avenue, Edison, NJ 08837USEPA Building 205 USEPA Region 2 2890 Woodbridge Avenue, Edison, NJ 08837

AOC 2

160 Fieldcrest

Campus Plaza 4

165 Fieldcrest

AOC 8 A/B




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2. METHODOLOGY

2.1 SAMPLING DESIGN

Subslab soil gas (SSSG), ambient air (AA), vapor recovery (VR), and indoor air (IA) samples

were collected in September 2014, January 2015, and March 2015 at selected buildings within

Groundwater AOCs 2 and 8 for VOC analysis. Specific sample locations, parameters, methods,

and dates sampled are presented in Tables 2-1 and 2-2 (Groundwater AOC 2) and Tables 2-3 and

2-4 (Groundwater AOC 8 A/B). The approach is based on the Approach for Evaluating Potential

IAQ Impacts (USACE, 2004).

Under ‘The IAQ Approach’ for the former Raritan Arsenal, the decision to sample indoor air was

originally based upon whether concentrations of VOCs in SSSG exceeded VIG screening levels.

The decision to sample SSSG was determined by the presence of VOCs in groundwater at

concentrations exceeding groundwater screening levels (previously evaluated against EPA Table

2C values, but currently evaluated against the Table 1 groundwater screening levels identified in

the NJDEP VIG, March 2013 version).

In some cases, individual landowners have opted to sample indoor air directly before SSSG or

groundwater was fully evaluated by USACE. In those cases, USACE proceeded to sample both

SSSG and IA for analysis of VOCs at those buildings. The objectives were to confirm the

landowner’s initial findings and to monitor the situation at each building where landowner

testing indicated a potential VI concern.

USACE evaluated the remaining buildings by identifying the buildings that fall within 100 ft of

each groundwater plume, comparing recent groundwater concentrations in each plume to the

NJDEP Table 1 Generic VI Screening Levels for Groundwater (NJDEP Table 1-GW), and

analyzing SSSG below each building potentially affected by DOD-related COPCs in

groundwater and soil. Methods for each element of this IAQ approach are described in the

following subsections.




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2.2 SAMPLING METHODS

2.2.1 Groundwater Evaluation

The evaluation of groundwater for a potential VI threat for any buildings within 100 ft of a VOC

groundwater plume has already been completed in the Supplemental Groundwater Data Report

(Weston, 2006b). The following section provides a summary of the methodology used.

The process of identifying COPCs originally consisted of comparing the maximum detected

concentrations of VOCs in wells within a groundwater plume to the EPA Table 2C criteria (EPA,

2002) to determine if the criteria were exceeded at any well location. This approach is

conservative from the perspective that in some cases the only groundwater data available may be

from wells located several hundred feet away from a given building. Generally, VOC

concentrations in groundwater have been attenuating over time, and so in many cases, the

maximum concentrations do not reflect current conditions.

Once it was determined that a groundwater plume contained VOCs at concentrations presenting

a potential VI pathway threat, SSSG was sampled from below buildings potentially affected by

the contamination. The process of evaluating which specific buildings required SSSG sampling

was determined on a building basis in accordance with The IAQ Approach (USACE, 2004).

Specific methods for groundwater sampling, by which the groundwater data were collected, have

been described in prior reports including the following:

Final Site-Wide Hydrogeology Report for the Former Raritan Arsenal Phase 2

Remedial Investigation (Weston, 1996);

Final Groundwater NAR for the Former Raritan Arsenal (Weston, 2003a);

Final Supplemental Groundwater Data Report (Weston, 2006b);

Final Groundwater Compliance Monitoring Progress Report for the Former Raritan

Arsenal (Weston, 2011); and

Draft Groundwater AOC 2 and 8 A/B Progress Report (Weston, 2014c).




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February 2016

2.2.2 Subslab Soil Gas Sampling Method

If a given building required SSSG sampling, a work plan with proposed sampling locations was

submitted to the NJDEP for concurrence. Locations were chosen in concurrence with the

property owner to avoid interrupting daily operations. Where practical, sample locations were

conservatively biased to locations anticipated to have the highest concentrations of VOCs. Based

on the state of science at the time, it was thought that mounding effects would be more

pronounced toward the center of a building. Therefore, sample locations were generally oriented

toward the center of the building and/or plume.

The permanent subslab sampling ports that were sampled during the recent sampling events

(September 2014 and January/March 2015) were installed several sampling events prior to the

events presented in this report. The SSSG sampling point installation procedure followed the

NJDEP Vapor Intrusion Guidance that was current at the time.

Shut-in checks, leak tests (i.e., helium tracer tests) and sample collection procedures were

conducted at each SSSG sampling location following the Standard Operating Procedure (SOP)

presented in the Uniform Federal Policy – Quality Assurance Project Plan, Former Raritan

Arsenal Remedial Investigation, Area 4 and Area 18A/B and Vapor Intrusion Pathway

Evaluation (UFP-QAPP) (Avatar, 2013).

Per the NJDEP VIG (March, 2013), independent of the helium tracer leak check on the soil gas

probe, a shut-in test of the sampling train was performed at each location during each sampling

event to verify aboveground fittings do not contain leaks. A shut-in test consisted of assembling

the aboveground apparatus (valves, lines, and fittings downstream of the top of the probe), and

evacuating the lines to a measured vacuum of about 10 in-Hg, then shutting the vacuum in with

closed valves on opposite ends of the sample train. The vacuum gauge was observed for at least

1 min, and if there was any observable loss of vacuum, the fittings were adjusted as needed until

the vacuum in the aboveground portion of the sample train did not noticeably dissipate. The leak

test serves as a quality control measure to evaluate the potential for dilution of a sample from

ambient air. The shut-in checks for all of the sampling ports passed (no leaks present).




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As noted in the Field Sheets in Appendix F, the helium leak tests (tracer tests) failed for the

following sample ports: CP4-SG-02, 205-SG-11, 165-SG-01, 165-SG-03, and 165-SG-04. The

leak tests were run multiple times at each sampling port where the test failed. Actions such as

adding putty around the sample ports were implemented. These ports will be abandoned and

replaced with new ports.

Results of the shut-in checks and leak tests are presented in Appendix F. Subslab soil gas

samples were collected over a 1-hour (approximate) period using evacuated stainless-steel

SUMMA canisters equipped with the appropriate pre-programmed flow-control valves

(regulators).

A round of SSSG samples were collected from the buildings associated with AOC 2 (165

Fieldcrest and Campus Plaza 4) and AOC 8 A/B (Buildings 10, 18, 200, and 205) in September

2014 and January/March 2015. Tables 2-5 and 2-6 summarize the number of SSSG samples

collected from each building associated with AOC 2 and AOC 8 A/B, respectively. All samples

were analyzed by EPA Method TO-15.

2.2.3 Building Survey Method

Prior to indoor air sampling, it was necessary to evaluate the interior of each building proposed

for sampling to determine if there were any conditions or interior sources of volatile chemicals

that could affect the sampling results. Avatar personnel conducted an inspection of each building

being investigated to confirm the sampling locations, as well as identify any chemical use within

each building. Avatar personnel completed the Indoor Air Building Survey and Sampling Form

(the Form) for each building tenant space with a tenant representative and/or the landlord during

a walkthrough of the building. The building surveys are presented in Appendix G.

The Form was completed to identify and evaluate site conditions that could impact the sample

results, including any possible indoor air emission sources that could generate target VOCs.

Possible emission sources include cleaning products, new carpet, recent painting, new furniture,

indoor smoking areas, insecticides, and gasoline storage and/or gasoline-powered equipment.




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February 2016

There were no significant changes to the inventory forms since the previous event. That is, there

were no clearly identifiable sources of VOCs (in particular TCE and PCE) observed.

The Form includes a list of the products identified during the survey that could impact the indoor

air sampling results. If available, material safety data sheets (MSDS) were provided by some

tenants for the products or chemicals observed. Prior to subsequent sampling events, Avatar re-

evaluated conditions for new products and chemicals being used or stored by building tenants

that could potentially impact the IAQ results, and updated the Form with the date and

observations.

2.2.4 Indoor Air Sampling Method

Indoor air sampling was conducted at locations selected in advance and agreed to by NJDEP.

Indoor air samples were collected over a 24-hour (approximate) period using evacuated stainless-

steel SUMMA canisters equipped with the appropriate pre-programmed flow-control valves

(regulators). The indoor samples were collected from the breathing zone height, when practical.

All windows and overhead doors were closed to the extent possible during IA sample collection.

Appliances that induce large pressure differences (e.g., exhaust fans) were not used 12 hours

before measurements began and during sample collection. Ventilation systems were operated as

normal. Vacuum readings on the SUMMA canisters were recorded before and after the start of

each sample collection and after the completion of each sample collection to ensure that all

regulators were working properly.

At buildings in which both SSSG and IA samples were collected concurrently, the IA samples

were collected prior to collection of the SSSG samples. This was done to reduce the potential for

contaminants that may be present in the subslab soil gas from impacting the indoor air samples.

Two rounds of IA samples were collected from Campus Plaza 4 and the buildings associated

with AOC 8 A/B (EPA Buildings 10, 18, 200, and 205) in September 2014 and January 2015. IA

samples were also collected from 165 Fieldcrest in September 2014. The winter sampling event

at 165 Fieldcrest was conducted in March 2015, approximately one and a half months after the




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February 2016

winter sampling event for the other buildings. This delay was because renovations were being

performed at 165 Fieldcrest during the January 2015 timeframe that could impact the IA

sampling results.

Tables 2-7 and 2-8 summarize the number of IA samples collected from AOC 2 and AOC 8 A/B,

respectively. All samples were analyzed by EPA Method TO-15.

2.2.5 Vapor Recovery Air Sampling Method

An SSD system is operational at 165 Fieldcrest. The SSD system consists of two zones that are

connected to separate fans. They are referred to as soil vapor extraction 1 (SVE-1) and SVE-2.

While located in the same building, each zone is independent from the other. SVE-1 serves the

daycare facility and the adjacent tenant on the southwest portion of the building. SVE-2 serves

the remainder of the building. VR samples are typically collected from each system.

As part of an ongoing investigation to determine if the SSD systems are needed for 165

Fieldcrest, USACE conducted a shutdown of the SVE-2 in August 2014 in advance of the

September 2014 sampling event. SVE-1 remained active during the shutdown of SVE-2. A VR

sample was collected during September 2014 from SVE-1. After the completion of the

September 2014 sampling, SVE-2 was powered on and both SSD systems have been running.

Both SSD systems were operational during the March 2015 sampling event. VR samples were

collected from SVE-1 and SVE-2 in March 2015.

The VR samples were collected over a 24-hour (approximate) period using evacuated stainless-

steel, 6-liter SUMMA canisters equipped with the appropriate pre-programmed flow-control

regulators. The SUMMA canister was connected to a port located on the out-going pipe of the

system using polyethylene tubing and a brass connector. Once the tubing was secure, vacuum

readings on the SUMMA canister were recorded at the start of each sample collection. After the

24-hour sample interval, the SUMMA canister was turned off and the completion time and

vacuum reading were recorded to ensure that all regulators were working properly. The VR

samples were collected simultaneously with the indoor air and ambient air samples. All samples

were analyzed by EPA Method TO-15.




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February 2016

2.2.6 Ambient Air Sampling Method

Background ambient (outdoor) air samples were collected for comparison with indoor air

sampling results at each building in order to interpret whether the IA results from each building

were potentially related to ambient sources outside of the building. Background air samples were

collected over a 24-hour (approximate) period using evacuated stainless-steel SUMMA canisters

equipped with the appropriate pre-programmed flow-control regulators. One background sample

was collected while indoor air samples were being collected at each building. The results of the

AA samples were compared with NJDEP residential and nonresidential VIG indoor air screening

levels so that results from the indoor air sampling could be viewed in an appropriate context

reflective of the local air quality. All samples were analyzed by EPA Method TO-15.

2.2.7 Meteorological Data

Meteorological data were obtained from the National Oceanic and Atmospheric Administration’s

(NOAA) National Climatic Data Center located at Newark Liberty International Airport in

Newark, New Jersey. Data were collected by the National Weather Service. This location was

considered to be a representative and reliable collection point for the entire former Raritan

Arsenal project area. The meteorological data were included in the indoor air survey forms, in

data tables included in the introductory sections for each AOC, and daily summaries for each

sampling event area located in Appendix H. There were no unusual barometric readings during

the sampling days that could have significantly impacted the results of the samples.

2.2.8 Quality Assurance/Control

Field quality control (QC) samples, consisting of field blanks and field duplicates, are not

required according to the guidelines outlined in the NJDEP VIG. However, during the September

2014 and January/March 2015 sampling events, field duplicate samples were collected for both

SSSG and IA samples. The purpose of the duplicate samples was to ensure accuracy in the

sampling and analytical procedures.

In the September 2014 sampling event, a total of five duplicate IA and four duplicate SSSG

samples were collected. Four IA duplicates and three SSSG duplicates were collected in January




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2015. During the March 2015 sampling event, one IA duplicate and one SSSG duplicate were

collected. IA duplicate samples were collected by co-locating two SUMMA canisters side by

side and opening and closing the flow regulators at the same time. SSSG duplicate samples were

collected by connecting a “T” valve to the subslab sampling apparatus allowing for two samples

to be collected from one sample port at the same time.

2.2.9 Sample Handling and Shipping

Certified clean, 6-liter SUMMA canisters and regulators were obtained from a New Jersey

certified analytical laboratory as outlined in the Indoor Air VOC Sampling Analysis

Requirements (NJDEP, 2003) and the NJDEP VIG (NJDEP, 2013). After sampling, all SUMMA

canisters were packaged in a box and transported by van to the selected New Jersey certified

laboratory. The laboratory used for samples presented in this report was Test America

(Burlington, VT). This lab is both NJDEP and DOD ELAP certified for EPA Method TO-15.

2.2.10 Data Validation Procedures

The sample data were reviewed to verify that holding times were met and that the laboratory QC

sample data were appropriate and met QC limits. Data verification and validation was performed

by Laboratory Data Consultants for data package completeness, correctness, and compliance

against the analytical method, procedural, and contractual requirements of the project. The Data

Validation Reports (see Appendix L) present Stage 2A data validation results for the samples

collected in September 2014 and January/March 2015.

The overall assessment of QA/QC data review by automated and manual validation of the

September 2014 and January/March sampling events met project requirements and analytical

completeness levels with the minor exceptions noted in Appendix L and the building-specific

results discussions presented in Sections 3 and 5.

The field chain-of-custody and the internal chain-of-custody forms were reviewed to verify

proper sample receipt, storage, sample preparation, and sample analysis. Data validation was

completed using the Automated Data Review software with manual review of any flagged data.




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Deviations from the Quality Assurance Project Plan (QAPP) and project laboratory quality

assurance (QA) Plan and Standard Operating Procedures (SOP) were documented, often in the

form of a case narrative included with the data package.

Field duplicate soil gas sample results were compared to assess field sampling precision. If the

relative percent difference (RPD) of an analyte between the duplicate pair is greater than 25%,

the analyte results was estimated (J) for both samples. If the analyte was detected in only one

sample, it also was flagged estimated.

To assess field precision, co-located SUMMA canisters were placed side-by-side for IA sample

collection to simulate the collection of field duplicate samples that are typically collected for

other sample matrices such as soil, as SUMMA canisters were not alternately filled by the same

air “aliquot”.

2.3 AVAILABLE SCREENING LEVELS

Analytical data results were compared to applicable screening levels to assess potential adverse

impacts. The screening levels available for comparison, included:

NJDEP Residential and Nonresidential Vapor Intrusion Guidance Screening Levels

for Subslab Soil Gas (March 2013);

NJDEP Residential and Nonresidential Vapor Intrusion Guidance Screening Levels

for Indoor Air (March 2013);

Site-Specific Screening Levels for Subslab Soil Gas (Appendix I); and

Site-Specific Screening Levels for Indoor Air (Appendix I).

The following is a brief discussion of each screening benchmark, including assumptions and

applicability. None of these benchmarks are promulgated regulatory criteria. The screening

levels that are most applicable to the specific use of the buildings under evaluation were

identified and used for comparisons.




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2.3.1 NJDEP Vapor Intrusion Screening Levels

NJDEP has published Screening Levels for residential and nonresidential scenarios for both

indoor air and soil gas. In October 2005, the NJDEP published its VIG. As the title implies, the

VIG is intended as a guidance document and is not a regulatory requirement. However, while the

NJDEP will consider alternative methods for VI investigations, it generally prefers that the

analytical results of any VI investigation be compared with the (current) benchmarks included in

Table 1 (NJDEP Master Table; Generic VI Screening Levels, originally issued October 2005) of

the VIG. Table 1 consists of benchmark concentrations for a number of COPCs, as both

residential and nonresidential concentrations. These concentrations have been revised

periodically as the “state of the science” of VI changes, the most recent revision being in March

2013.

In this report, the sample results tables in Sections 3 and 5 highlight any values where

concentrations of VOCs from the current sampling events as well as historical data from

previous sampling rounds exceed the current (March 2013) NJDEP VIG benchmarks. These

tables are specific to individual buildings within each AOC, and specific table numbers are

referenced within the text in association with each building.

2.3.2 Site-Specific Screening Levels

USACE developed site-specific IA and SSSG screening levels for Building 102-168 Fernwood

Avenue and 160 Fieldcrest Avenue for PCE and TCE. These screening numbers were accepted

by the NJDEP and documented in a letter dated March 8, 2010. However, based on revisions to

EPA toxicity values after 2010 for PCE (revised February 2012) and TCE (revised September

2011), USACE updated the site-specific screening levels as presented in the Draft Final

Groundwater and Vapor Intrusion Feasibility Study (Weston, 2015). Site-specific screening

levels were also derived for PCE and TCE degradation products including 1,2-dichlorethane, cis-

1,2-dichlroethene, and vinyl chloride (VC).

All buildings that are currently being monitored by USACE are of commercial use and are

located in relative close proximity to one another. All buildings are slab-on-grade construction




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with similar soil types and all are used as office space and/or light industrial. It should be noted

that 165 Fieldcrest has a daycare facility in use. Site-specific screening levels were developed

for daycare children and adult workers in order to provide the appropriate protective criteria for

165 Fieldcrest. Site-specific screening levels were also developed for residential use. The site-

specific screening levels are presented in Table 2-9. A discussion of the derivation of these

numbers is provided in Appendix I.

2.3.3 Screening Levels Used for Comparisons

The objective of the data comparisons with screening levels presented in the following sections

is to determine if the levels detected in the IA and SSSG (if any) pose a concern for the building

inhabitants. Therefore, it is appropriate to compare the observed concentrations in IA and SSSG

with the screening levels that are most reflective of the actual use of the building.

Screening levels for residential use are available from NJDEP and site-specific residential

screening levels have been developed by USACE. The residential screening levels represent

worst case exposure conditions and over-estimate the type of exposure that is occurring within

the buildings under evaluation including 165 Fieldcrest where a daycare facility is present.

However, for conservatism the NJDEP and site-specific residential screening levels were used to

evaluate the indoor air results for 165 Fieldcrest. The NJDEP and site-specific nonresidential

screening levels best represent the exposure occurring at the majority of buildings.

The list below summarizes the screening levels used for each building.

165 Fieldcrest: as a conservative screening step for indoor air, the NJDEP and site-

specific residential and nonresidential screening levels were used for 165 Fieldcrest.

The NJDEP nonresidential screening levels or the lower of the daycare child and

nonresidential site-specific screening levels (when available) were used for soil gas

screening.

Campus Plaza 4: this building is clearly used for commercial and/or industrial

purposes. The NJDEP and the site-specific nonresidential screening levels (when

available) were used for Campus Plaza 4.




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EPA Buildings: these buildings are clearly used for commercial and/or industrial

purposes. The NJDEP and the site-specific nonresidential screening levels (when

available) were used for the EPA Buildings.

Tables


Table 2-1Subslab Soil Gas Sample Location Summary - Groundwater AOC 2

September 2014 and January/March 2015IAQ Report #11


AOC Building Location ID Duplicate Date Sample Type-- 9/12/2014-- 3/10/2015-- 9/12/2014-- 3/10/2015

01-DUP-SG-01 9/12/201401-DUP-SG-01 3/10/2015

-- 9/12/2014-- 3/10/2015-- 9/12/2014-- 3/10/2015

-- 3/10/2015-- 9/12/2014-- 1/23/2015-- 9/12/2014-- 1/23/2015-- 9/12/2014-- 1/23/2015-- 9/12/2014

01-DUP-SG-02 1/23/201501-DUP-SG-02 9/12/2014

-- 1/23/2015

Notes:AOC = Area of ConcernRCP = Raritan Center ParkwayCP = Campus PlazaSSSG = subslab soil gasVR = vapor recoveryAll samples were analyzed by TO-15.

CP4-SG-06

CP4-SG-05

SSSG

SSSG

SSSG

SSSG

SSSG

CP4-SG-02

CP4-SG-03

CP4-SG-04

165-VR-02

SSSG

SSSG

SSSG

SSSG

Vapor Recovery

Vapor Recovery

165-SG-01

165-SG-02

165-SG-03

165-SG-04

165-VR-01Not sampled in September 2014

AOC 2

165 Fieldcrest

Campus Plaza 4


Table 2-2Indoor Air Sample Location Summary - Groundwater AOC 2

September 2014 and January/March 2015IAQ Report #11


AOC Building Location ID Duplicate Date Sample Type01-DUP-IA-01 9/12/2014

-- 3/10/2015-- 9/12/2014-- 3/10/2015-- 9/12/2014-- 3/10/2015-- 9/12/2014

01-DUP-IA-01 3/10/2015-- 9/12/2014-- 3/10/2015-- 9/12/2014-- 3/10/2015-- 9/12/2014-- 3/10/2015-- 9/12/2014-- 3/10/2015-- 9/12/2014-- 1/23/2015-- 9/12/2014-- 1/23/2015-- 9/12/2014-- 1/23/2015-- 9/12/2014

01-DUP-IA-02 1/23/201501-DUP-IA-02 9/12/2014

-- 1/23/2015-- 9/12/2014-- 1/23/2015-- 9/12/2014-- 1/23/2015

Notes:AOC = Area of ConcernFBC = Federal Business CenterRCP = Raritan Center ParkwayCP = Campus PlazaIA = indoor airBG = backgroundAll samples were analyzed by TO-15.

Campus Plaza 4

AOC 2

165-IA-04

165-IA-07

CP4-IA-01

165-IA-03

165 Fieldcrest

165-IA-02

CP4-IA-04

CP4-BG-01

165-IA-01

Indoor Air

165-BG-01 Background

Indoor Air

165-IA-05 Indoor Air


Indoor Air

Indoor Air

Indoor Air

CP4-IA-02 Indoor Air

Indoor Air

Background

CP4-IA-05

Indoor Air

Indoor Air




Table 2-3Subslab Soil Gas Sample Location Summary - Groundwater AOC 8 A/B

September 2014 and January 2015IAQ Report #11


AOC Building Location ID Duplicate Date Sample Type-- 9/10/2014-- 1/21/2015-- 9/10/2014-- 1/21/2015-- 9/10/2014-- 1/21/2015

03-DUP-SG-05 9/10/201403-DUP-SG-05 1/21/2015

-- 9/10/2014-- 1/21/2015-- 9/10/2014-- 1/21/2015-- 9/10/2014-- 1/21/2015-- 9/10/2014-- 1/21/2015-- 9/10/2014-- 1/21/2015

01-DUP-SG-03 9/10/2014-- 1/21/2015-- 9/10/2014-- 1/21/2015-- 9/10/2014

01-DUP-SG-03 1/21/2015

Notes:AOC = Area of ConcernSSSG = subslab soil gasAll samples were analyzed by TO-15.

EPA Building 10

SSSG

EPA Building 205

200-SG-02 SSSGEPA Building 200

205-SG-12 SSSG

205-SG-15 SSSG

205-SG-01

205-SG-11 SSSG

SSSG

010-SG-04 SSSG

SSSG

010-SG-03

205-SG-19 SSSG

AOC 8

018-SG-06 SSSG

018-SG-05 SSSGEPA Building 18

018-SG-04 SSSG

018-SG-07


Table 2-4Indoor Air Sample Location Summary - Groundwater AOC 8 A/B

September 2014 and January 2015IAQ Report #11


AOC Building Location ID Duplicate Date Sample Type-- 9/10/2014-- 1/21/2015

01-DUP-IA-03 9/10/201401-DUP-IA-03 1/21/2015

-- 9/10/2014-- 1/21/2015-- 9/10/2014-- 1/21/2015-- 9/10/2014-- 1/21/2015-- 9/10/2014-- 1/21/2015-- 9/10/2014-- 1/21/2015-- 9/10/2014

01-DUP-IA-04 1/21/201501-DUP-IA-04 9/10/2014

-- 1/21/2015-- 9/10/2014-- 1/21/2015-- 9/10/2014-- 1/21/2015-- 9/10/2014

01-DUP-IA-05 1/21/2015-- 9/10/2014-- 1/21/2015

01-DUP-IA-05 9/10/2014-- 1/21/2015-- 9/10/2014-- 1/21/2015-- 9/10/2014-- 1/21/2015

Notes:AOC = Area of ConcernIA = indoor airBG = backgroundAll samples were analyzed by TO-15.

AOC 8


EPA Building 205

EPA Building 200

EPA Building 10

EPA Building 18

Indoor Air








205-IA-11

200-IA-03



Indoor Air






Table 2-5AOC 2: Subslab Soil Gas Sampling Summary


Building Number of SSSG Samples* Sampling Date Sampling Round5 9/12/2014 25th5 3/10/2015 26th6 9/12/2014 21st6 1/23/2015 22nd

* Includes duplicates.

165 Fieldcrest

Campus Plaza 4


Table 2-6AOC 8 A/B: Subslab Soil Gas Sampling Summary


Building Number of SSSG Samples* Sampling Date Sampling Round2 9/10/2014 21st2 1/21/2015 22nd5 9/10/2014 15th and 1st5 1/21/2015 16th and 2nd1 9/10/2014 25th1 1/21/2015 26th6 9/10/2014 22nd6 1/21/2015 23rd


EPA Building 10

EPA Building 205

EPA Building 200

EPA Building 18


Table 2-7AOC 2: Indoor Air Sampling Summary


BuildingNumber of Indoor Air

Samples* Sampling Date Sampling Round160 Fieldcrest

8 9/12/201425th - 4 samples26th - 4 samples

8 3/10/201526th - 3 samples27th - 5 samples

7 9/12/2014 21st7 1/23/2015 22nd


Not sampled

165 Fieldcrest

Campus Plaza 4


Table 2-8AOC 8 A/B: Indoor Air Sampling Summary


BuildingNumber of Indoor Air

Samples* Sampling Date Sampling Round3 9/10/2014 21st3 1/21/2015 22nd3 9/10/2014 15th3 1/21/2015 16th3 9/10/2014 25th3 1/21/2015 26th6 9/10/2014 22nd6 1/21/2015 23rd


EPA Building 10

EPA Building 200

EPA Building 205

EPA Building 18


Table 2-9Site-Specific Screening Levels


Chemical

Site-Specific Residential Indoor

Air Screening Level(µg/m3)

Site-Specific Nonresidential

Indoor Air Screening Level

(µg/m3)

Site-Specific Daycare Child

Indoor Air Screening Level

(µg/m3)

Site-Specific Residential Soil Gas

Screening Level(µg/m3)

Site-Specific Nonresidential Soil

Gas Screening Level(µg/m3)

Site-Specific Daycare Child Soil

Gas Screening Level(µg/m3)

TCE 0.43 3 4.8 22 150 242PCE 9 47 140 468 2400 7008Vinyl chloride 0.16 3 0.22 8 140 11

Notes:- Values shown are the lower of the screening levels based on cancer and noncancer based health effects (see Appendix I).

- Daycare child exposure applies to 165 Fieldcrest only.

- The residential use screening levels were developed to determine worst-case exposure conditions. Residential use does not apply to any of the buildings under evaluation. However, the residential indoor air screening levels were used for 165 Fieldcrest.




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February 2016

3. SAMPLING RESULTS FOR GROUNDWATER AOC 2

Per the recommendations from IAQ Report #10 (Avatar, 2014), two buildings continue to be

monitored for potential VI issues in AOC 2. The buildings being evaluated are:

165 Fieldcrest Avenue; and

Campus Plaza 4.

This section focuses on analytical results from these buildings for IA and SSSG samples

collected in September 2014 (both buildings), January 2015 (Campus Plaza 4 only), and March

2015 (165 Fieldcrest only). A complete set of samples from both buildings was collected in

September 2014. A complete set of samples was collected from Campus Plaza 4 in January

2015. The winter sampling event at 165 Fieldcrest was conducted in March 2015, approximately

one and a half months after the winter sampling event for Campus Plaza 4. The sampling delay

at 165 Fieldcrest was because renovations were being performed during January 2015 that could

have impacted the IA sampling results.

A third building, 160 Fieldcrest, is being sampled every five years with annual inspections of the

vapor mitigation system to ensure it is operating effectively. Appendix A contains the most

recent annual Remedial Action Progress Report that presents a summary of the activities

conducted between 6 November 2013 and 18 November 2014 (Geosyntec, 2015a) and the

system inspection conducted report based on monitoring on 18 November 2014. The list below

briefly summarizes previous 160 Fieldcrest reports:

The May 12, 2010 progress report (Geosyntec, 2010) included details on the

installation and monitoring of the solar powered fan installed in vent pipe PVE-3, as

well as the system performance data between October 5, 2009 and March 18, 2010;

The January 6, 2012 progress report (Geosyntec, 2012) covered system performance

from March 19, 2010 through the monitoring event of November 4 to 16, 2011. In the

January 2012 progress report, Geosyntec proposed a monitoring schedule consisting

of annual inspections to download wind speed data from the Newark Airport and

confirm proper performance of the wind and solar venting systems. Annual system

inspections have been conducted since November 2012; and




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February 2016

The February 13, 2013 progress report (Geosyntec, 2013) covered system

performance from November 17, 2011 through the monitoring event of November 28,

2012.

The January 3, 2014 progress report (Geosyntec, 2014) covered system performance

from November 29, 2012 through the monitoring event of November 5, 2013.

The 160 Fieldcrest building was not sampled in September 2014 or during the winter of 2015.

The next sampling event for 160 Fieldcrest is scheduled for 2017.

3.1 OVERVIEW OF GROUNDWATER AOC 2

Groundwater AOC 2 is located within the north central portion of the former Raritan Arsenal

beginning near historical Building 256 in soil Investigation Area 18C. Building 256 has

previously been identified as the source of AOC 2 and has undergone extensive remedial

activities (Weston 2002b and 2004). Building 256 was demolished in 2014. All that remains is

the concrete slab.

Groundwater analytical data from 2005 to 2013 for monitoring wells within 100 feet of the

established AOC 2 boundary were reviewed to identify the COPCs in Groundwater AOC 2. Any

chemical with an analytical result above either the Groundwater Screening Levels from the

March 2013 NJDEP VIG or the November 2002 EPA Table 2C Screening Level for

Groundwater was considered a COPC.

COPCs in Groundwater AOC 2 are PCE, TCE, and vinyl chloride, as shown in Table 3-1. A

subset of wells associated with AOC 2 groundwater were most recently sampled in May 2012,

September 2012, and July 2013. Results from these samples show an overall decrease in VOC

levels. The most notable decrease was observed in MW-114 (a former source area well) that had

historical maximum concentrations of 405 µg/L and 9,820 µg/L observed in December 2000 for

PCE and TCE, respectively. PCE and TCE were both nondetect in MW-114 in the July 2013

sample results.

The VOC concentrations in groundwater at and near the source area in Groundwater AOC 2

historically were the highest encountered at the former Raritan Arsenal, exceeding the NJDEP




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February 2016

Groundwater Quality Standards (GWQS) for TCE, PCE, and vinyl chloride. However, the main

source of contamination (the Building 256 underground storage tank [UST] system and leach

field) was remediated in 1998 through the removal of approximately 2,450 cubic yards of

contaminated soil (Weston, 2002b).

USACE conducted additional remedial activities from August to December 2002, when an

additional 3,500 cubic yards (approximately) of contaminated soil were removed from the

Investigation Area 18C Building 265 Ramp Area, in the immediate vicinity of the earlier source

removal, but from deeper within the subsurface (Weston, 2004). Monitoring well MW-114 is

located immediately down-gradient of the former source area and up-gradient of 151 Fieldcrest

Avenue and 165 Fieldcrest Avenue.

Two groundwater treatment pilot studies were conducted in the Groundwater AOC 2 plume from

2008 to 2010. The first treatment was injection of an in-situ chemical oxidation compound,

focused north of 165 Fieldcrest. The second pilot study consisted of

biostimulation/bioaugmentation at Building 256 (northern portion of AOC 2). This groundwater

treatment has proven to be effective in decreasing groundwater contamination within AOC 2.

3.1.1 Building Survey

The NJDEP Building Survey and Sampling Form was completed for each tenant space

approximately two weeks prior to sample collection activities. The building survey forms for

each building are presented in Appendix G.

The results of the building surveys indicate that the primary use is office space combined with

warehouse storage. One tenant uses their space for a daycare facility. Common cleaning

products, paint, and paint thinners were found in all of the buildings evaluated, but generally in

small quantities and properly stored. As a result, in most cases, these cleaners do not necessarily

constitute “significant” potential VOC sources. The building surveys also concluded that there

were no carpet cleanings or pest exterminations scheduled within two weeks prior to sampling or

during the sampling event.




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February 2016

3.1.2 Subslab Soil Gas and Vapor Recovery System

VOC results of the SSSG and VR system samples in the vicinity of Groundwater AOC 2 are

discussed in the following subsections of this report and are provided in Tables 3-2 through 3-4.

Tables 3-2 and 3-3 present 165 Fieldcrest (SSSG and VR, respectively) and Table 3-4 presents

Campus Plaza 4 (SSSG only).

3.1.3 Indoor Air

The indoor air analytical results for the buildings within Groundwater AOC 2 are discussed in

the following subsections and are provided in Tables 3-5 (165 Fieldcrest) and 3-6 (Campus Plaza

4).


Meteorological data for the September 2014, January 2015, and March 2015 sampling events

were downloaded from National Climatic Data Center consistent with guidance provided in the

NJDEP VIG. The data were taken from the Local Climatological Data (LCD) for the weather

station located at Newark Liberty International Airport in Newark, NJ. The average

meteorological parameters collected for the dates that the AOC 2 buildings were sampled are

summarized in Table 3-7. See Appendix H for the complete meteorological data.

3.2 165 FIELDCREST AVENUE

165 Fieldcrest is a one-story concrete and steel building built on a concrete slab on grade located

at 165 Fieldcrest Avenue along the western boundary of the Groundwater AOC 2 plume. 165

Fieldcrest is surrounded by a parking lot with a small landscaped lawn area. The building

consists of warehouse, laboratory, daycare, and office space. A SSD system was installed in

August 2003 by the NJDEP.

Two complete sampling rounds occurred in September 2014 and March 2015 and included

SSSG, VR, and IA sample collection. As mentioned in Section 2.2.5, a SSD system is

operational at 165 Fieldcrest. The SSD system consists of two zones that are connected to

separate fans. They are referred to as soil vapor extraction (SVE-1) and SVE-2. While located in




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February 2016

the same building, each zone is independent from the other. SVE-1 serves the daycare facility

and the adjacent tenant on the southwest portion of the building. SVE-2 serves the remainder of

the building. VR samples are typically collected from each system. As part of an ongoing

investigation to determine if the SSD systems are needed for 165 Fieldcrest, USACE conducted

a shutdown of SVE-2 in August 2014 in advance of the September 2014 sampling event. SVE-1

remained active during the shutdown of SVE-2. A VR sample was collected during September

2014 from SVE-1. After the completion of the September 2014 sampling, SVE-2 was powered

on and both SSD systems have been running. Both SSD systems were operational during the

March 2015 sampling event. VR samples were collected from SVE-1 and SVE-2 in March

2015.

3.2.1 Prior Investigations

165 Fieldcrest is located near soil Investigation Area 18C on the eastern side of former Building

256. Several phases of investigation and remediation have been completed within Investigation

Area 18C, including a Supplemental Phase II Remedial Investigation (Weston, 1999). This

investigation led to the removal of one 6,000-gallon steel UST, three smaller concrete USTs,

former leach field piping, and contaminated soils. Additional oil-contaminated soil and buried

construction debris were encountered beneath the asphalt pavement northeast of Building 256

and west of the UST excavation area during the 1998 remediation of the leach field system.

USACE removed approximately 2,450 cubic yards of contaminated soil from this area in 1998

(Weston, 2002b), and additional TCE-contaminated soils were removed from this area in 2002

(Weston, 2004). In addition, pilot studies using in situ chemical oxidation (165 Fieldcrest

Avenue Area) have been performed to address vapor sources for AOC 2. Results indicated

substantial reductions in TCE concentrations since the 2008 baseline (pre-injection) sampling

event in the majority of the wells sampled (Shaw, 2010c). Reductions were also noted for other

related compounds such as PCE, 1,2-DCE, and VC but not to the same degree as the TCE

reduction.

Additional investigations were completed in Investigation Area 18C and in the vicinity of 165

Fieldcrest. The investigations included the collection of additional soil, soil gas, and groundwater




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February 2016

samples for VOC analysis. The results of analyses of the soil, soil gas, and groundwater samples

from the additional investigations were submitted to the NJDEP in the Final Supplemental

Remedial Investigation Report Areas 18C - Ramp Area and Buildings 151/165 (Weston, 2005c).

Indoor air sampling was conducted in May 2003 at 165 Fieldcrest by the property owner’s

consultant, Environmental Waste Management Associates (EWMA). PCE was detected in the

indoor air in building tenant spaces. Historical analytical results for the samples collected from

165 Fieldcrest are provided in Appendix J (Tables J-1, J-2, and J-3).

Subsequent indoor air sampling conducted by USACE in June 2003 did not detect any PCE in

the indoor air. However, PCE was detected in four SSSG samples and in one soil sample

collected from below the building, indicating a potential subsurface source of PCE. Other VOCs

that were detected in the indoor air samples collected during the June 2003 sampling event at

concentrations above the indoor air guidance values were either not detected in the subslab soil

gas samples or detected at concentrations below those detected in the indoor air samples.

The NJDEP installed the SSD system at 165 Fieldcrest in August 2003 because vapor intrusion

lines of evidence and building use factors existed at the time that led NJDEP to conclude that the

VI pathway was either complete or sufficiently threatened to be complete. Evidence included

elevated levels of both TCE and PCE in groundwater in the immediate vicinity of the building,

elevated levels of TCE and PCE in soil gas samples collected beneath the building, levels of PCE

in indoor air, and the presence of a child care facility in the building. The SSD system consists of

20 subslab vapor extraction points spaced throughout the building in order to obtain coverage of

the entire floor space. The 20 extraction points are connected to two blowers that apply vacuum

to the vapors beneath the building. Indoor air and the VR system sample ports were sampled for

one year on a quarterly basis (October 2003 through July 2004) to evaluate the effectiveness of

the subsurface vapor mitigation system in compliance with the Indoor Air Monitoring Work Plan

for Building 165 (Weston, 2003b).




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February 2016

After four quarters of post-mitigation sampling, the NJDEP and USACE agreed to semi-annual

sampling at 165 Fieldcrest. VR samples are also collected during each monitoring event to

monitor the SSD system.

During the January 2005 sampling event (the first semi-annual event following the quarterly

post-mitigation sampling program), four subslab soil gas points were installed in the same

locations as were first sampled in June 2003, including the space used for the daycare facility. In

addition, a total of seven IA samples and one background (ambient) air sample were collected.

Figure 3-1 presents the locations of the samples. All samples were analyzed for VOCs.

Historically, the background air sample was collected from next to the playground at the daycare

facility. During September 2010, the background location was moved to the roof of the daycare

facility and has continued to be sampled from this location or in the immediate vicinity. The two

VR samples were collected from the shed behind the building (west side) and the shed on the

side of the building (north side). These have been designated as the sampling locations for 165

Fieldcrest vapor recovery system since the January 2005 sampling event.

One pre-mitigation (June 2003) and numerous post-mitigation rounds of sampling have been

performed by USACE at 165 Fieldcrest. Sampling events from August 2007 through September

2008 showed decreasing levels of PCE in subslab soil gas. Exceedance of PCE in subslab soil

gas only occurred in August 2007. It was not detected above NJDEP VIG subslab screening

levels in May and September 2008. From August 2007 through September 2008, PCE was not

detected above NJDEP VIG screening levels from samples collected from the VR sampling

ports. During sampling events in August 2007 and September 2008, chloroform and methylene

chloride were detected in the vapor extraction system above NJDEP VIG subslab screening

levels. From August 2007 through September 2008, the following compounds were detected in

indoor air above NJDEP VIG screening levels: methylene chloride, benzene, chloroform and

1,4-dichlorobenzene (1,4-DCB).

The results from the March 2009 sampling event at 165 Fieldcrest showed a decreasing trend in

VOC concentrations in the subslab soil gas in comparison with previous sampling results. PCE




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February 2016

concentrations in soil gas exceeded NJDEP VIG screening levels at one sampling port (SG-04).

No other VOCs were detected at concentrations exceeding subslab site-specific or NJDEP

screening levels. VOCs continued to be detected above NJDEP VIG screening levels within the

VR system indicating that the system is functioning to remove VOCs from the soil gas as

intended. Although VOCs were detected in indoor air in March 2009, they were likely due to a

non-DOD source(s).

The September 2009 and February 2010 results indicated benzene was the only VOC detected in

subslab soil gas at concentrations exceeding the VIG (SG-02 in February 2010 only). Benzene,

1,4-DCB, methylene chloride, chloroform, and PCE were all detected in indoor air at a minimum

of one sampling location at concentrations exceeding the VIG screening levels indicating that

most of these were not groundwater related.

During the September 2010 sampling event, only 1,4-DCB was detected in a soil gas sample

above NJDEP VIG screening levels. No other VOCs were detected in SSSG or VR samples at

concentrations greater than the NJDEP VIG screening levels during the September 2010 and

February 2011 sampling events. VOCs detected in indoor air at concentrations above the NJDEP

VIG screening levels included 1,4-DCB and chloroform. The main groundwater COPCs for

AOC 2 (PCE and TCE) were not detected in indoor air above the screening levels during

September 2010 and February 2011.

Benzene, chloroform, ethylbenzene, and PCE exceeded NJDEP IA screening levels during the

September 2011 sampling events at 165 Fieldcrest. These analytes were also detected in the

SSSG from the same sampling event. A review of the IA and SSSG results for these analytes

suggested an indoor or ambient (background) source. However, the VI pathway cannot be ruled

out. There were no exceedances of IA or SSSG screening levels in the February 2012 sampling

event. The September 2011 exceedances occurred when the SSD system had malfunctioned and

shut down in August 2011 for an unknown amount of time. At that time, there were no alarms on

the system to alert NJDEP or the system owner that the system was not functioning properly. An

alert system has since been installed in the event that the system malfunctions in the future.




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February 2016

TCE concentrations did not exceed the NJDEP VIG screening levels in subslab soil gas or indoor

air (Weston, 2008a). There was one instance during January 2012 where TCE concentrations in

indoor air were slightly above the site-specific level. Chloroform and ethylbenzene were also

detected above NJDEP VIG screening levels at indoor air sample location points but were not

detected in subslab soil gas above the NJDEP VIG screening levels. The analytical results from

the two VR sampling ports did not have any constituents exceeding the NJDEP VIG subslab soil

gas screening levels. These analytical results further confirm that the groundwater COPCs are

not posing a VI threat and that exceedances are likely from a tenant source.

Data collected in October 2012 and February 2013 showed decreasing concentrations or

continued non-detects for VOCs in subslab soil gas in comparison with those found in previous

sampling events. Indoor air results fluctuate depending on sampling rounds suggesting potential

indoor air sources. TCE in SSSG did not exceed the strictest screening levels. Chloroform was

detected in SSSG above the NJDEP nonresidential screening levels during the October 2012

event. While TCE and PCE and a number of other contaminants were detected in the VR

samples, the results were less than the screening levels. TCE was detected in indoor air above its

site-specific nonresidential screening level. PCE was detected in indoor air above its

nonresidential screening level during the February 2013 sampling event. The PCE and TCE

exceedances are indicative of an indoor source since low levels were observed in the SSSG and

VR sample results. Other VOCs including 1,4-DCB, benzene, ethylbenzene, and chloroform

were detected in indoor air above NJDEP screening levels but these compounds are not

groundwater COPCs and their presence in IA is not DOD-related.

None of the SSSG sample results collected during the September 2013, October 2013, and

February 2014 events from 165 Fieldcrest for the AOC 2 COPCs were greater than the soil gas

screening levels. The September 2013 SSSG sample result for chloroform at one location

exceeded the NJDEP VIG nonresidential soil gas screening level. The chloroform SSSG level in

the February 2014 sample collected from the same location was less than the screening level. No

other VOCs were detected in subslab soil gas at concentrations greater than the site-specific or

the NJDEP VIG screening levels. The site COPCs (PCE, TCE, and VC) were detected in the VR




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February 2016

samples collected during the September 2013, October 2013, and February 2014 sampling

events. However, the detected levels of the site COPCs were less than the screening levels. A

number of other contaminants were detected in the VR samples but the concentrations were less

than the screening levels.

PCE exceeded its site-specific indoor air screening level at multiple locations in the September

2013 sample results. The September 2013 PCE exceedances prompted the October 2013 sample

event. Prior to the October 2013 sampling, Avatar along with representatives from USACE and

FBC performed a targeted inspection of the warehouse space used by Cembre, Inc. that appeared

to be the source of the PCE. A PCE-containing degreasing/parts cleaner product was observed in

the Cembre warehouse. The tenant was instructed to remove the product immediately and use a

non-PCE-containing product in the future. The October 2013 sampling occurred approximately

two weeks after the PCE containing product was removed. The October 2013 IA samples

targeted the locations with the most elevated PCE levels in September 2013. The PCE results for

the October 2013 IA samples were less than the screening levels indicating that the source of

PCE was removed. None of the COPCs exceeded their nonresidential site-specific indoor air

screening levels in the February 2014 samples.

Benzene, chloroform, and ethylbenzene exceeded NJDEP IA screening levels in some of the

samples collected during September 2013, October 2013, and February 2014 sample events.

Benzene, chloroform, and ethylbenzene are not site COPCs, none of these chemicals are found in

the groundwater or soil gas above screening levels, suggesting that the presence of these

chemicals in IA is due to an indoor source.

3.2.2 Current Investigation

The IA and SSSG samples collected during the September 2014 and March 2015 events were

from the same locations as those in previous sampling events. The most recent indoor air sample

results were compared with the site-specific and NJDEP residential and nonresidential screening

levels. The most recent SSSG sample results were compared with the NJDEP nonresidential

screening levels or the lower of the daycare child or nonresidential site-specific screening levels

(when available).




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February 2016

A pre-sampling walk-through was conducted two weeks prior to sampling to verify the locations

of the subslab soil gas sampling points and to update the building survey (see Appendix G).

There were no significant changes to the inventory forms since the previous event. There were

no clearly identifiable sources of VOCs (in particular, TCE and PCE) observed.

The Electronic Data Deliverables (EDDs) are provided in Appendix K and the laboratory

analytical reports are provided in Appendix L. All data have been validated as documented in the

Data Validation Reports presented in Appendix L. Table 3-8 summarizes the samples collected

during the current investigation at 165 Fieldcrest.

3.2.2.1 Subslab Soil Gas and Vapor Recovery System Results

A summary of SSSG and VR sample results collected from 165 Fieldcrest and comparisons with

the screening levels are provided in Tables 3-2 and 3-3, respectively. Figure 3-1 presents the

analytical results for PCE and TCE from October 2013 to March 2015.

None of the SSSG sample results from 165 Fieldcrest for the AOC 2 COPCs were greater than

the soil gas screening levels (see Table 3-2). As mentioned in Section 3.2, there was a partial

shutdown (intentional) of the SSD system during the September 2014 sampling. Even during

this shutdown, the SSSG results collected from the area affected by the shutdown were not a

concern for the site COPCs as they were either nondetect or significantly less than the screening

levels. The SSSG sample results from location Celsis 04 for chloroform collected in September

2014 exceeded its NJDEP VIG nonresidential soil gas screening level. The chloroform SSSG

levels in the March 2015 results collected from location Celsis 04 were significantly less than the

screening level. No other VOCs were detected in subslab soil gas at concentrations greater than

the screening levels.

Low levels of PCE and TCE along with other contaminants were observed in the VR samples.

However, there were no screening level exceedances in the VR samples collected during the

September 2014 and March 2015 sampling events (see Table 3-3).




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February 2016

3.2.2.2 Indoor Air and Background Sampling Results

The IA and background (AA) sample results from September 2014 and March 2015 are shown in

Table 3-5. Figure 3-1 presents the analytical results for PCE and TCE from October 2012 to

March 2015.

The site COPCs were not detected in the September 2014 IA samples when there was a partial

shutdown of the SSD system. TCE was detected in one IA sample collected in March 2015.

PCE was detected at four locations in March 2015. All detected PCE and TCE concentrations

were less than the screening levels. For some samples collected in September 2014, the reporting

limits for TCE and other compounds were slightly elevated. This was a result of elevated

ethanol concentrations that required sample dilutions. These dilutions caused the slight increase

in the reporting limits for TCE and possibly other analytes. Samples collected in March 2015

were not diluted in order to preserve the reporting limits for the target compounds.

1,2-Dichloroethane slightly exceeded its screening level at one location (165-5) in September

2014. Other VOCs detected in indoor air at concentrations above the screening levels included

benzene, ethylbenzene, and chloroform. Benzene and ethylbenzene exceeded screening levels in

September 2014 and March 2015. Chloroform exceeded screening levels in March 2015 only.

The site COPCs were not detected in the AA samples collected in September 2014 and March

2015 (see Table 3-5). There were no significant concentrations of other contaminants observed in

the AA samples collected in September 2014 and March 2015 (see Table 3-5).

3.2.3 Integrated Discussion of Results

The data from the September 2014 and March 2015 sampling events for 165 Fieldcrest showed

that the VI pathway is potentially complete but the detected concentrations are well below levels

of concern. PCE and TCE were not detected in SSSG or IA at levels of concern even during the

September 2014 sampling event when a portion of the SSD system was intentionally turned off.

Other chemicals (1,2-dichlroethane, benzene, ethylbenzene, and chloroform) were detected in the

indoor air above screening levels. The IA levels of these constituents were likely from an indoor




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February 2016

source and not the VI pathway as demonstrated by the lack of SSSG concentrations. The

analytical results from the two VR sampling ports did not have any constituents exceeding the

subslab soil gas screening levels.

3.2.4 Conclusions and Recommendations

USACE conducted a partial shutdown of the SSD system in August 2014 in advance of the

planned September 2014 sampling event. The sample results from September 2014 for the AOC

2 COPCs are not a concern even during the partial shutdown. Upon completion of the

September 2014 sampling event, the system was turned back on.

USACE submitted a work plan (USACE, 2014) to NJDEP to seek concurrence on a protocol to

allow for a full or partial SSD system shutdown at 165 Fieldcrest Avenue, such that the final

evaluation phase of the soil vapor intrusion pathway may be completed (see Appendix B). The

next steps to be taken at 165 Fieldcrest as outlined in the work plan are contingent on the results

of a groundwater sampling event that was completed in August 2015. Appendix B also includes

NJDEP comments on the work plan plus USACE responses to NJDEP’s comments.

Benzene, ethylbenzene, chloroform, and 1,2-dichloroethane were detected in the indoor air at

levels that exceeded NJDEP indoor air screening levels. However, these chemicals are not

attributed to DOD-sources. Benzene, ethylbenzene, and chloroform were also detected in SSSG

samples but not at levels of concern that would suggest the VI pathway is complete.

3.3 CAMPUS PLAZA 4

Campus Plaza 4 is a single-story concrete and steel building built on a concrete slab on grade

located within the footprint of the Groundwater AOC 2 plume. The building consists of office

and warehouse space and is occupied by three tenants and the property owner’s firm. All four

tenant locations were chosen as sample sites (Figure 3-2). Campus Plaza 4 is surrounded by a

parking lot with a small landscaped lawn area. Campus Plaza 4 does not have a SSD system

installed.




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February 2016

Twenty rounds of IA and SSSG samples were collected at Campus Plaza 4 from October 2004

through February 2014. Current investigation activities included SSSG and IA sample collection

during September 2014 and January 2015.


The original indoor air sampling at Campus Plaza 4 was conducted in May 2004 by EWMA

under contract with Federal Business Center (FBC), the property owner. At the time, the levels

of PCE and TCE were reported below detection limits. However, benchmark exceedances were

reported for both benzene and methylene chloride.

Weston collected a round of indoor air, subslab soil, and subslab soil gas samples in October and

November 2004. The results of this investigation indicated the possibility of a complete VI

pathway based on the presence of TCE in both SSSG and IA. However, a Campus Plaza 4 tenant

utilized a number of VOCs in their business operations which could have contributed to the

indoor air exceedances detected during the initial 2004 sampling event. The VOCs with

concentrations in soil gas that previously exceeded the EPA Table 2C guidelines were benzene,

ethylbenzene, methylene chloride, methyl tertiary butyl ether (MTBE), and toluene, as well as

PCE and TCE. A confirmatory round of indoor air sampling was recommended per The IAQ

Approach (USACE, 2004).

A second round of IA and SSSG samples were collected in January 2006. TCE was the only

VOC detected in SSSG at concentrations above NJDEP VIG screening levels (in three of five

samples). The indoor air sampling results showed exceedances of NJDEP VIG screening levels

for TCE, PCE, and methylene chloride in one of five samples; MTBE in two of five samples;

and 1,4-DCB and benzene in four of five indoor air samples. USACE recommended continued

semi-annual monitoring of SSSG and IA along with an evaluation of potential remedial

alternatives. Subsequently, USACE and NJDEP agreed to increase the monitoring frequency for

Campus Plaza 4 to quarterly monitoring, beginning with the September 2006 sampling event.

However, after the September 2008 summer sampling event, USACE and NJDEP agreed to

continue sampling on a semi-annual basis.




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February 2016

The March 2009 SSSG analytical results for Campus Plaza 4 continued to show concentrations

of PCE and TCE above screening levels. However, the concentrations of these constituents in

indoor air did not exceed screening levels. Because of the VOC concentrations in soil gas,

USACE agreed to continue both subslab and indoor air sampling for this building. PCE and TCE

concentrations in subslab soil gas were detected above the screening levels between the

September 2009 and February 2011 sampling events.

The data from the September 2011 and February/April 2012 sampling events for Campus Plaza 4

showed a potentially complete VI exposure pathway for TCE concentrations in the subslab soil

gas and indoor air. TCE concentrations in SSSG were detected above the site-specific screening

levels. Chloroform concentrations were above NJDEP VIG screening levels in subslab soil gas

but not in indoor air. Ethylbenzene and 1,2- DCA were detected in indoor air at concentrations

above NJDEP VIG screening levels, but they did not exceed screening levels in the subslab soil

gas samples.

The data collected during October 2012 and February 2013 continued to show a potential vapor

intrusion pathway for TCE. TCE levels in subslab soil gas were above screening levels. TCE

was detected in indoor air above the nonresidential screening level. Benzene and ethylbenzene

were also detected in indoor air above screening levels. During this period, USACE conducted

an isotope study at Campus Plaza 4 (GSI Environmental, 2013). The isotope study concluded it

is likely that the TCE measured in the indoor air is related to an indoor source.

The data from the September 2013 and February 2014 sampling events for Campus Plaza 4 show

a potentially complete VI exposure pathway for TCE concentrations in the subslab soil gas and

indoor air. TCE concentrations in SSSG and IA were detected above the site-specific screening

levels. At one location, chloroform was detected above NJDEP VIG screening levels in subslab

soil gas but not within indoor air.

Historical analytical results for samples collected from Campus Plaza 4 are provided in

Appendix J (Tables J-4 and J-5).




3-16

February 2016


For continuity, the samples that were collected in September 2014 and January 2015 were from

the same or similar locations as those used during past sampling events (see Figure 3-2). The

most recent sample results were compared with the NJDEP nonresidential screening levels or the

nonresidential site-specific screening levels (when available).




no clearly identifiable sources of VOCs (in particular, TCE and PCE) observed.

The EDDs are provided in Appendix K and the laboratory analytical reports are provided in

Appendix L. All data have been validated as documented in the Data Validation Reports

presented in Appendix L. Table 3-9 summarizes the samples collected under the current

investigation at Campus Plaza 4.

3.3.2.1 Subslab Soil Gas Results

TCE concentrations in SSSG samples collected in September 2014 and January 2015 exceeded

the nonresidential soil gas screening level at two locations (see Table 3-4). The recent TCE

levels are similar to those that have been observed previously. No other site COPCs (i.e., PCE

and VC) or other compounds had SSSG levels greater than screening levels. Figure 3-2 presents

the analytical results for PCE and TCE from October 2012 to January 2015.


None of the site COPCs were detected in the IA samples collected during the September 2014

sampling event (see Table 3-6). Low levels of PCE and TCE were detected in the January 2015

samples but all concentrations were less than the nonresidential screening levels. The IA sample

results for the other compounds were all less than the IA screening levels.

For some samples collected in September 2014, the reporting limits for certain compounds were

slightly elevated. This was a result of elevated ethanol concentrations that required sample




3-17

February 2016

dilutions. These dilutions caused the slight increase in the reporting limits. Samples collected in

January 2015 were not diluted in order to preserve the reporting limits for the target compounds.

The site COPCs were not detected in the AA samples collected in September 2014 and January

2015 (see Table 3-6). The ambient ethylbenzene concentration from the September 2014

sampling event exceeded its nonresidential NJDEP screening level. There were no significant

concentrations of other contaminants observed in the AA samples collected in September 2014

and January 2015 (see Table 3-6).

The analytical data from October 2012 to January 2015 are shown on Figure 3-2.


The data from the September 2014 and January 2015 sampling events for Campus Plaza 4 show

a potentially complete VI exposure pathway but the observed IA levels for the site COPCs are

less than the screening levels. TCE concentrations in SSSG were detected above its site-specific

screening level. However, TCE concentrations in IA were less than the site-specific

nonresidential screening level, which represents the actual use of Campus Plaza 4.


The SSSG analytical results from the September 2014 and January 2015 sampling events for

Campus Plaza 4 continue to show concentrations of TCE above its nonresidential site-specific

screening levels for soil gas. However, the indoor air analytical results for TCE were less than

the nonresidential level. Since TCE was detected in both soil gas and indoor air, a potentially

complete exposure pathway exists at Campus Plaza 4. There has been a significant reduction in

TCE levels in IA when compared to previous sampling events. The previous TCE levels were

due to a previous tenant’s undocumented use of TCE. Since the departure of that tenant from

Campus Plaza 4, TCE has not been an indoor air concern.

USACE plans to reduce the frequency of the subslab and indoor air sampling for Campus Plaza

4. The next sampling event is planned for the winter of 2016 at which time the data will be

reevaluated, as will the determination of the need and frequency of future sampling events.




3-18

February 2016

In their comments to IAQ Report #10 (Avatar, 2014), NJDEP recommended implementation of

remedial measures to address the VI pathway at Campus Plaza 4 in a letter dated November 6,

2014. This recommendation was based on NJDEP’s assessment that the observed relationship

among historical groundwater, soil gas and indoor air data indicates the presence of TCE in

indoor air is due to vapor intrusion. A comprehensive review of the data, including a temporal

trends analysis, collected from the building was performed (see USACE letter dated 20 April

2015 in Appendix C). This review concluded that the observed historical TCE exceedances in

indoor air are primarily attributable to background TCE sources inside the building from a

former tenant rather than vapor intrusion. Consequently, it is USACE’s position that the

installation of an SSD system to mitigate VI is not required and that additional sampling at a

reduced frequency will be performed. NJDEP responded to USACE’s 20 April 2015 letter on 3

August 2015 (see Appendix C) and determined that the VI pathway cannot be completely ruled

out and that continued monitoring at a reduced frequency is acceptable.

FIGURES

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C e m b r eC e m b r e

P e p p e r m i n tP e p p e r m i n t

VR-02

VR-01

165-7

165-6

165-5

165-4

165-3

165-2

Home 02Amax 02

Pepper 01

Celsis 04

165-BG-01

165-BG-01(Dates prior to

9/25/2013)

165-BG-01(9/25/2013,10/29/2013)

165-BG-01(2/20/2014)

Le ge ndk Am bie nt Air Sam ple Locations!( Ind oor Air Sam ple Locations!? Subslab Soil Gas Sam ple Locations") V apor Re cove ry Sam ple LocationsBuild ing165

.50 0 50 100 150

Scale in Feet


FIGURE 3-1PCE & TCE RESULTS FO R SUBSLABSO IL GAS AND INDO O R AIR SAM PLES

BUILDING 165

Ambient Air ResultsIndoor Air ResultsSoil Gas ResultsVapor Recovery Results

TABLE KEY

Am ax 02Param e t e r Crit e ria 10/25/2012 2/28/2013 9/26/2013 2/21/2014 9/12/2014 3/10/2015

TETRACHLOROETHENE 2400 1 19 26 0.81 J 2 J 0.52 JTRICHLOROETHENE 150 0.86 U 0.86 U 0.11 0.13 0.64 U 0.18 J

V R-01Param e t e r Crit e ria 10/25/2012 2/28/2013 9/25/2013 10/29/2013 2/20/2014 9/12/2014 3/10/2015

TETRACHLOROETHENE 2400 0.81 31 11 1 U 1 U 6 2 TRICHLOROETHENE 150 0.21 U 0.91 0.11 0.07 J 0.048 J 0.64 0.3

165-6Param e t e r Crit e ria 10/25/2012 2/28/2013 9/25/2013 10/29/2013 2/20/2014 9/12/2014 3/10/2015

TETRACHLOROETHENE 47 0.88 10 72 3 1 U 3 U 1 UTRICHLOROETHENE 3 0.21 U 0.21 U 0.11 0.07 J 1 0.54 U 0.21 U

Pe ppe r 01Param e t e r Crit e ria 10/25/2012 2/28/2013 9/26/2013 2/21/2014 9/12/2014 3/10/2015

TETRACHLOROETHENE 2400 1 U 24 27 1 U 3 U 7 TRICHLOROETHENE 150 0.86 U 0.86 U 1 0.16 0.43 U 0.19 J

165-BG-01Param e t e r Crit e ria 10/25/2012 2/28/2013 9/25/2013 10/29/2013 2/20/2014 9/12/2014 3/10/2015

TETRACHLOROETHENE 47 0.62 0.34 1 U 1 U 1 U 1 U 1 UTRICHLOROETHENE 3 0.21 U 0.75 0.086 J 0.064 J 0.038 J 0.21 U 0.21 U

Hom e 02Param e t e r Crit e ria 10/25/2012 2/28/2013 9/26/2013 2/21/2014 9/12/2014 3/10/2015

TETRACHLOROETHENE 2400 1 U 8 9 1 J 4 1 JTRICHLOROETHENE 150 0.86 U 0.86 U 0.081 J 0.086 J 0.21 U 0.21

V R-02Param e t e r Crit e ria 10/25/2012 2/28/2013 9/25/2013 10/29/2013 2/20/2014 3/10/2015

TETRACHLOROETHENE 2400 2 1 2 1 U 1 U 0.81 JTRICHLOROETHENE 150 0.49 0.86 U 0.33 0.07 J 0.11 U 0.21 U

Ce lsis 04Param e t e r Crit e ria 10/25/2012 2/28/2013 9/26/2013 2/21/2014 9/12/2014 3/10/2015

TETRACHLOROETHENE 2400 1 U 2 4 2 3 U 0.75 JTRICHLOROETHENE 150 0.86 U 0.86 U 0.33 0.36 0.43 U 0.29

165-2Param e t e r Crit e ria 10/25/2012 2/28/2013 9/25/2013 2/20/2014 9/12/2014 3/10/2015

TETRACHLOROETHENE 47 0.68 3 6 1 U 1 U 1 UTRICHLOROETHENE 3 0.21 U 4 0.097 J 0.043 J 0.21 U 0.21 U


TETRACHLOROETHENE 47 0.46 2 7 1 U 5 U 0.26 JTRICHLOROETHENE 3 0.21 U 0.28 0.086 J 0.043 J 0.7 U 0.21 U


TETRACHLOROETHENE 47 0.68 6 12 1 U 1 U 0.24 JTRICHLOROETHENE 3 0.21 U 0.32 0.075 J 0.043 J 0.21 U 0.23


TETRACHLOROETHENE 47 1 16 124 4 1 U 1 U 0.32 JTRICHLOROETHENE 3 0.21 U 0.21 J 0.059 J 0.091 J 0.048 J 0.21 U 0.21 U


TETRACHLOROETHENE 47 1 8 29 1 1 U 1 U 0.33 JTRICHLOROETHENE 3 0.21 U 0.86 0.07 J 0.075 J 0.048 J 0.21 U 0.21 U


TETRACHLOROETHENE 47 0.95 11 75 3 1 U 3 U 1 UTRICHLOROETHENE 3 0.21 U 0.22 0.064 J 0.075 J 1 0.54 U 0.21 U

Note s:- "Crite ria" in the d ata boxe s are Site -Spe cific Scre e ningLe ve ls base d on the lowe r scre e ning le ve ls for nonre sid e ntialor d aycare child e xposure s.- Re d bold te xt – d e te cte d conce ntration gre ate r thanscre e ning crite ria.- All sam ple re sults in units of m icrogram s pe r cubic m e te r (µg/m 3).

Residential Nonresidential Residential NonresidentialPCE 9 47 470 2,400TCE 3 3 27 150

NJDEP Scre e ning Le ve ls (µg/m 3) (M arch 2013)Indoor Air Subslab Soil Gas

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CP4-7 CP4-6

CP4-5CP4-4

CP4-2

CP4-1

CP4-SG-6

CP4-SG-5

CP4-SG-3CP4-BG-01

CP4-SG-2

CP4-SG-4

.50 0 50 100 150

Scale in Feet


FIGURE 3-2PCE & TCE RESULTS FOR SUBSLABSOIL GAS AN D IN DOOR AIR SAMPLES

CAMPUS PLAZ A 4

Le g e ndk Am bie nt Air Sa m ple Loca tion!( Indoor Air Sa m ple Loca tions!? Su bslab Soil Ga s Sa m ple Loca tionsCa m pu s P la za 4

CP4-1 Parameter Criteria 10/25/2012 2/28/2013 9/25/2013 2/20/2014 9/12/2014 1/23/2015TETRACHLOROETHENE 47 0.75 0.39 1 U 1 U 5 U 0.24 JTRICHLOROETHENE 3 0.53 3 0.97 0.26 0.86 U 0.44

CP4-4Parameter Criteria 10/25/2012 2/28/2013 9/25/2013 2/20/2014 9/12/2014 1/23/2015TETRACHLOROETHENE 47 2 1 1 U 1 U 1 U 0.2 JTRICHLOROETHENE 3 5 5 6 8 0.21 U 0.21 U

CP4-BG-01Parameter Criteria 10/25/2012 2/28/2013 9/25/2013 2/20/2014 9/12/2014 1/23/2015TETRACHLOROETHENE 47 0.53 0.27 U 1 U 1 U 1 U 1 UTRICHLOROETHENE 3 0.38 0.24 0.075 J 0.097 J 0.21 U 0.21 U

CP4-2Parameter Criteria 10/25/2012 2/28/2013 9/25/2013 2/20/2014 9/12/2014 1/23/2015TETRACHLOROETHENE 47 0.88 0.29 0.79 J 1 U 5 U 0.27 JTRICHLOROETHENE 3 0.75 0.7 0.78 0.38 0.86 U 0.45

CP4-7Parameter Criteria 9/12/2014 1/23/2015TETRACHLOROETHENE 47 7 U 0.29 JTRICHLOROETHENE 3 1 U 0.86

CP4-SG-6Parameter Criteria 10/25/2012 2/28/2013 9/26/2013 2/21/2014 9/12/2014 1/23/2015TETRACHLOROETHENE 2400 6 6 12 10 13 7TRICHLOROETHENE 150 10 10 17 16 19 13

Ambient Air ResultsIndoor Air ResultsSoil Gas Results

TABLE KEY



CP4-SG-3Parameter Criteria 10/25/2012 2/28/2013 9/26/2013 2/21/2014 9/12/2014 1/23/2015TETRACHLOROETHENE 2400 18 24 30 49 24 0.36 JTRICHLOROETHENE 150 197 181 311 424 97 3


CP4-5Parameter Criteria 10/25/2012 2/28/2013 9/25/2013 2/20/2014 9/12/2014 1/23/2015TETRACHLOROETHENE 47 1 0.27 U 1 U 1 J 1 U 1 UTRICHLOROETHENE 3 0.31 0.21 J 0.32 0.26 0.21 U 0.18 J

CP4-6Parameter Criteria 10/25/2012 2/28/2013 9/25/2013 2/20/2014 9/12/2014 1/23/2015TETRACHLOROETHENE 47 2 0.26 J 1 J 1 J 1 U 1 UTRICHLOROETHENE 3 0.23 0.21 U 0.2 0.25 0.21 U 0.21 U


N JDEP Scre e ning Le ve ls (µg /m 3) (Ma rch 2013)Indoor Air Subslab Soil Gas

N ote s:- "Crite ria " in the da ta boxe s a re Site-Specific Scre e ningLe ve ls for nonre side ntia l exposu re .- Re d bold text – de tecte d conce ntra tion g re a te r tha nscre e ning crite ria .- All sa m ple re su lts in u nits of m icrog ra m s pe r cu bic m e te r (µg /m 3).

Tables


Table 3-1Contaminants of Potential Concern1 - Groundwater AOC 2


Comparison of Maximum Groundwater Concentrations by ConstituentUsing NJDEP's Subsurface Vapor Intrusion Guidance

Table 2C USEPA Table 1Screening Level NJDEP Groundwater Maximum Most Recentfor Groundwater2 Screening Levels3 Concentration Concentration4

(ug/L) (ug/L) (ug/L) (ug/L)TETRACHLOROETHYLENE 5 31 45 MW151-2 3/29/2005 21 3/9/2007TRICHLOROETHYLENE 5 2 800 MW151-2 3/29/2005 221 3/9/2007VINYL CHLORIDE 2 1 750 MW-114A 9/17/2009 230 4/23/20101,1-DICHLOROETHANE 220 50 0.3 J MW-140 5/23/2012 ND 7/8/20131,1-DICHLOROETHENE 190 260 2.2 J MW-303S 8/4/2009 ND 4/22/20101,2-DICHLOROETHANE 5 3 2.9 MW-305D 6/3/2008 1.4 4/22/20102-BUTANONE 440,000 2,500,000 160 MW-303S 8/4/2009 ND 4/22/2010ACETONE 220,000 21,000,000 160 MW-305S 8/4/2009 ND 4/22/2010ACRALDEHYDE NA NA 33 MW-305D 12/10/2009 33 12/10/2009BENZENE 5 20 3.7 MW-302S 3/12/2009 0.66 J 4/23/2010CARBON DISULFIDE 560 1,500 4.5 MW-305S 8/4/2009 ND 4/22/2010CHLOROETHANE 28,000 26,000 4.4 J MW-306D 12/9/2009 ND 4/22/2010CHLOROFORM 80 70 15 MW-81A 6/5/2008 15 6/5/2008CHLOROMETHANE 6.7 240 8.7 MW-114A 9/17/2009 ND 4/23/2010CIS-1,2-DICHLOROETHENE 210 NA 1,700 MW-114A 3/12/2009 250 4/23/2010ETHYLACETATE NA NA 240 MW-304D 12/9/2009 240 12/9/2009ETHYLBENZENE 700 700 1 MW-114A 4/23/2010 1 4/23/2010METHYLENE CHLORIDE 58 920 0.5 MW-310 2/11/2009 ND 4/21/2010MTBE 120,000 580 0.61 J MW-114 9/12/2012 0.55 J 7/2/2013TOLUENE 1,500 330,000 1.5 MW-114A 12/9/2009 1.4 4/23/2010TRANS-1,2-DICHLOROETHENE 180 300 13 MW-303S 9/17/2009 ND 4/22/2010TRICHLOROFLUOROMETHANE 180 2,000 0.59 MW-CP-IV-1 9/11/2012 ND 7/2/2013XYLENES (TOTAL) 22,000 8,600 3 MW-114A 4/23/2010 3 4/23/2010

NOTES:

ug/L - micrograms per liter 2 From EPA's November 2002 "Draft Guidance for Evaluating the Vapor Intrusion to J - Estimated Value Indoor Air Pathway from Groundwater and Soils". NA - Not Available3 NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor ND - Not Detected Intrusion Guidance" document issued by NJDEP dated March 2013 Bolded and Shaded - Exceedance of NJDEP Table 1 Screening Level 4 Most recent concentration at location where maximum concentration was detected.

1 COPCs are any chemicals detected in monitoring wells within 100 feet of defined plume boundary from 2005 to 2013 (most recent available data).

Constituent

Groundwater Data 2005 - present

Sample DateSample DateSample Location

Table 3-2Subslab Soil Gas Analytical Results: September 2014 and March 2015

165 Fieldcrest: Groundwater AOC 2Indoor Air Quality Report #11

Former Raritan Arsenal, Edison, New Jersey


Location ID:Sample ID:

Sample Type:Lab Sample ID:

Date:Units: (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3)

Compound1

AOC 2 - COPCsTetrachloroethene 2400 4 2.7 U 7.4 2.2 J 0.52 J 2.7 U 2.7 U 0.76 J 0.7 J 4.0 1.2 JTrichloroethene 150 4 0.43 U 0.19 J 0.64 U 0.18 J 0.43 U 0.43 U 0.29 0.28 0.21 U 0.22Vinyl chloride 11 4 0.2 U 0.1 U 0.31 U 0.1 U 0.20 U 0.20 U 0.10 U 0.10 U 0.10 U 0.10 UAOC 2 - Other Compounds1,1,1-Trichloroethane 1100000 2.2 U 1.1 U 3.3 U 1.1 U 2.2 U 2.2 U 1.1 U 1.1 U 1.1 U 1.1 U1,1,2,2-Tetrachloroethane 34 2.7 U 1.4 U 4.1 U 1.4 U 2.7 U 2.7 U 1.4 U 1.4 U 1.4 U 0.5 J1,1,2-Trichloroethane 38 2.2 U 1.1 U 3.3 U 1.1 U 2.2 U 2.2 U 1.1 U 1.1 U 1.1 U 1.1 U1,1-Dichloroethane 380 1.6 U 0.81 U 2.4 U 0.81 U 1.6 U 1.6 U 0.81 U 0.81 U 0.81 U 0.81 U1,1-Dichloroethene 44000 1.6 U 0.79 U 2.4 U 0.79 U 1.6 U 1.6 U 0.79 U 0.79 U 0.79 U 0.79 U1,2,4-Trichlorobenzene 440 7.4 U 3.7 U 11 U 3.7 U 7.4 U 7.4 U 3.7 U 3.7 U 3.7 U 3.7 U1,2,4-Trimethylbenzene NLE 4.3 2.4 12 8.6 1.9 J 2.7 3.5 2.7 1.8 1.11,2-Dibromoethane 38 3.1 U 1.5 U 4.6 U 1.5 U 3.1 U 3.1 U 1.5 U 1.5 U 1.5 U 1.5 U1,2-Dichlorobenzene 44000 2.4 U 1.2 U 3.6 U 1.2 U 2.4 U 2.4 U 1.2 U 1.2 U 1.2 U 1.2 U1,2-Dichloroethane 24 1.1 J 0.3 J 2.4 U 0.8 U 1.1 J 1.3 J 0.5 J 0.6 J 0.8 U 0.8 U1,2-Dichloropropane 61 1.8 U 0.92 U 2.8 U 0.92 U 1.8 U 1.8 U 0.92 U 0.92 U 0.92 U 0.92 Ucis-1,2-Dichloroethene NLE 1.6 U 0.79 U 2.4 U 0.79 U 1.6 U 1.6 U 0.79 U 0.79 U 0.79 U 0.79 Utrans-1,2-Dichloroethene 13000 1.6 U 0.79 U 2.4 U 0.79 U 1.6 U 1.6 U 0.79 U 0.79 U 0.79 U 0.79 U1,3,5-Trimethylbenzene NLE 1.1 J 0.7 J 3.3 2.3 0.5 J 0.7 J 1.0 0.9 J 0.5 J 0.4 J1,3-Butadiene 20 0.88 U 0.44 U 1.30 U 0.44 U 0.88 U 0.88 U 0.44 U 0.44 U 0.44 U 0.44 U1,3-Dichlorobenzene NLE 2.4 U 1.2 U 3.6 U 1.2 U 2.4 U 2.4 U 1.2 U 1.2 U 1.2 U 1.2 U1,4-Dichlorobenzene 56 2.4 U 1.2 U 3.6 U 1.2 U 2.4 U 2.4 U 1.2 U 1.2 U 1.2 U 1.2 U1,4-Dioxane NLE 36 U 18 U 54 U 18 U 36 U 36 U 18 U 18 U 18 U 18 U2,2,4-Trimethylpentane NLE 1.4 J 6.0 15 17 1.9 U 0.7 J 3.4 3.3 1.0 2.72-Butanone 1100000 5.4 5.7 6.3 2.7 4.4 4.7 3.2 3.4 3.0 2.82-Chlorotoluene 5100 2.1 U 1.0 U 3.1 U 1.0 U 2.1 U 2.1 U 1.0 U 1.0 U 1.0 U 1.0 U2-Hexanone NLE 4.1 U 2.0 U 6.1 U 2.0 U 4.1 U 4.1 U 2.0 U 2.0 U 2.0 U 2.0 U4-Ethyltoluene NLE 1.1 J 0.8 J 3.8 2.7 2.0 U 0.6 J 1.0 J 0.8 J 0.4 J 0.4 J4-Methyl-2-pentanone 660000 4.1 U 2.0 U 6.1 U 2.0 U 4.1 U 4.1 U 1.5 J 1.5 J 2.0 U 2.0 UAcetone 6800000 48 43 150 29 82 99 43 45 19 8.80 JAllyl chloride 100 3.1 U 1.6 U 4.7 U 1.6 U 3.1 U 3.1 U 1.6 U 1.6 U 1.6 U 1.6 UBenzene 79 1.0 J 3.4 5.9 6.6 0.4 J 0.6 J 3.1 3.0 0.7 2.4Benzyl chloride NLE 2.1 U 1.0 U 3.1 U 1.0 U 2.1 U 2.1 U 1.0 U 1.0 U 1.0 U 1.0 UBromodichloromethane 34 2.7 U 1.3 U 4.0 U 1.3 U 12.0 15.0 1.3 U 1.3 U 1.3 U 1.3 UBromoethene 22 1.70 U 0.87 U 2.60 U 0.87 U 1.70 U 1.70 U 0.87 U 0.87 U 0.87 U 0.87 UBromoform 560 4.1 U 2.1 U 6.2 U 2.1 U 4.1 U 4.1 U 2.1 U 2.1 U 2.1 U 2.1 UBromomethane 1100 1.60 U 0.78 U 2.30 U 0.78 U 1.60 U 1.60 U 0.78 U 0.78 U 0.78 U 0.78 UCarbon disulfide 150000 0.48 J 1.60 U 4.70 U 1.60 U 3.10 U 3.10 U 1.20 J 1.60 U 0.22 J 1.60 UCarbon tetrachloride 100 0.48 J 0.46 J 0.41 J 0.46 J 0.49 J 0.64 J 0.45 J 0.46 J 0.90 J 0.46 JChlorobenzene 11000 0.35 J 0.92 U 2.80 U 0.92 U 1.80 U 1.80 U 0.92 U 0.92 U 0.92 U 0.92 UChloroethane 2200000 2.6 U 0.6 J 3.9 U 0.4 J 2.6 U 2.6 U 0.6 J 0.6 J 1.3 U 1.3 UChloroform 27 0.83 J 0.87 J 2.90 U 0.98 U 63 81 2.10 2.10 0.98 U 0.98 UChloromethane 20000 1.8 J 1.7 1.6 J 1.2 2.1 U 1.4 J 1.2 1.2 1.1 0.7 Jcis-1,3-Dichloropropene NLE 1.80 U 0.91 U 2.70 U 0.91 U 1.80 U 1.80 U 0.91 U 0.91 U 0.91 U 0.91 UCyclohexane 1300000 1.6 3.1 6.9 10.0 1.2 J 1.7 2.0 1.9 1.6 1.2Dibromochloromethane 43 3.4 U 1.7 U 5.1 U 1.7 U 1.8 J 2.3 J 1.7 U 1.7 U 1.7 U 1.7 UDichlorodifluoromethane 22000 3.7 J 2.4 J 3.8 J 2.3 J 3.2 J 3.8 J 2.2 J 2.2 J 3.3 2.2 JEthanol NLE 210 300 R 240 J 120 7 J 8 J 19 19 70 J 21Ethyl Acetate NLE 36 U 8 J 54 U 18 U 36 U 36 U 18 U 18 U 18 U 18 UEthylbenzene 250 2.8 2.3 9.1 7.3 0.9 J 1.1 J 3.2 2.8 1.2 1.3Freon TF 6600000 3.10 U 1.50 U 4.60 U 1.50 U 36 46 0.60 J 0.56 J 0.68 J 0.53 JFreon 114 NLE 2.8 U 1.4 U 4.2 U 1.4 U 2.8 U 2.8 U 1.4 U 1.4 U 1.4 U 1.4 UHexachlorobutadiene 53 4.3 U 2.1 U 6.4 U 2.1 U 4.3 U 4.3 U 2.1 U 2.1 U 2.1 U 2.1 UIsopropyl Alcohol NLE 38 550 R 15 J 8 J 4 J 9 J 50 49 6 J 6 Jm,p-Xylene NLE 5 8 30 26 2 J 2 J 10 9 3 4Methyl Methacrylate NLE 4.1 U 2.0 U 6.1 U 2.0 U 4.1 U 4.1 U 2.0 U 2.0 U 2.0 U 2.0 UMethyl tert-butyl ether 2400 1.40 U 0.37 J 0.85 J 2.2 1.40 U 0.16 J 0.72 U 0.72 U 0.18 J 0.72 UMethylene chloride 61000 1.1 J 2.1 5.2 U 1.4 J 5.8 4.4 2.0 2.0 0.8 J 0.9 JN-Heptane NLE 1.5 J 3.8 8.9 7.8 1.6 U 0.74 J 2.5 2.5 0.65 J 2.8n-Hexane 150000 1.0 J 10 28 52 0.44 J 0.78 J 4.6 4.6 2.1 4.2o-Xylene NLE 2.0 2.5 10 8.6 0.71 J 0.90 J 3.4 3.1 1.1 1.5Propylene NLE 17 U 8.6 U 26 U 8.6 U 17 U 17 U 8.6 U 8.6 U 2.0 J 8.6 UStyrene 220000 7.2 0.9 2.5 U 0.9 U 1.9 2.9 1.3 1.1 2.1 0.3 JTert-butyl Alcohol NLE 52 3 J 45 U 15 U 10 J 13 J 3 J 3 J 4 J 15 UTetrahydrofuran NLE 2.4 J 15 U 44 U 15 U 29 U 29 U 3.3 J 3.2 J 15 U 1.1 JToluene 1100000 25 14 40 42 14 18 12 12 6.8 6.4Total Xylenes 22000 6.7 10 40 35 2.3 3.1 14 12 3.7 5.8trans-1,3-Dichloropropene NLE 2.7 0.91 U 2.7 U 0.91 U 1.8 U 1.8 U 0.91 U 0.91 U 0.91 U 0.91 UTrichlorofluoromethane 150000 11 7.8 17 4.0 2.0 J 2.5 3.5 3.5 5.4 4.9Vinyl acetate NLE 35 U 18 U 53 U 18 U 35 U 35 U 18 U 18 U 18 U 18 U

NOTES:AOC - Area of ConcernID - IdentifierNLE - No Limit EstablishedNJDEP - New Jersey Department of Environmental ProtectionJ – Estimated ValueR - Rejected ResultU - Not Detected Above Reporting Limitµg/m3 - micrograms per cubic meter

Highlighting notes exceedance of screening level.

1The compound list for this table includes the compounds analyzed under the TO-15 analysis.2NJDEP Soil Gas Screening Levels as are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP updated March 2013.3Table 1 is the regulatory screening level used for comparison of the analytical results. 4Site Specific Criteria based on the lower screening levels for nonresidential or daycare child exposures (see Table 2-9).

26-165-SG-04Sample Sample Sample Sample Sample Duplicate

25-165-SG-01 26-165-SG-01 25-165-SG-02 26-165-SG-02 25-165-SG-03 01-DUP-SG-01

200-24170-15 200-24170-1

26-165-SG-03 01-DUP-SG-01 25-165-SG-04Pepper 01 Amax 02 Celsis 04 Home 02

200-27011-12 200-27011-13 200-24170-2 200-27011-14Sample Duplicate Sample Sample

200-24170-13 200-27011-10 200-24170-14 200-27011-113/10/20159/12/2014 3/10/2015 9/12/2014 3/10/2015 9/12/2014 9/12/2014

NJDEP VIGNonresidential Generic

Soil Gas Screening Levels2,3

Unless Noted(µg/m3)

3/10/2015 3/10/2015 9/12/2014

Table 3-3Vapor Recovery Analytical Results: September 2014 and March 2015




Location ID:Sample ID: 26-165-VR-01 27-165-VR-01 26-165-VR-02

Sample Type: Sample Sample SampleLab Sample ID: 200-24170-3 200-27011-15 200-27011-16

Date: 9/12/2014 3/10/2015 3/10/2015Units: (µg/m3) (µg/m3) (µg/m3)

Compound1

AOC 2 - COPCsTetrachloroethene 2400 4 6.3 2.1 0.78 JTrichloroethene 150 4 0.64 0.29 0.21 UVinyl chloride 11 4 0.1 U 0.1 U 0.1 UAOC 2 - Other Compounds1,1,1-Trichloroethane 1100000 1.1 U 1.1 U 1.1 U1,1,2,2-Tetrachloroethane 34 1.4 U 1.4 U 1.4 U1,1,2-Trichloroethane 38 1.1 U 1.1 U 1.1 U1,1-Dichloroethane 380 0.81 U 0.81 U 0.81 U1,1-Dichloroethene 44000 0.79 U 0.79 U 0.79 U1,2,4-Trichlorobenzene 440 3.7 U 3.7 U 3.7 U1,2,4-Trimethylbenzene NLE 4.6 1.3 0.4 J1,2-Dibromoethane 38 1.5 U 1.5 U 1.5 U1,2-Dichlorobenzene 44000 1.2 U 1.2 U 1.2 U1,2-Dichloroethane 24 0.81 U 0.81 U 0.81 U1,2-Dichloropropane 61 0.92 U 0.92 U 0.92 Ucis-1,2-Dichloroethene NLE 0.86 0.79 U 0.79 Utrans-1,2-Dichloroethene 13000 0.79 U 0.79 U 0.79 U1,3,5-Trimethylbenzene NLE 1.3 0.46 J 0.98 U1,3-Butadiene 20 0.44 U 0.44 U 0.44 U1,3-Dichlorobenzene NLE 1.2 U 1.2 U 1.2 U1,4-Dichlorobenzene 56 1.2 U 1.2 U 1.2 U1,4-Dioxane NLE 18 U 18 U 18 U2,2,4-Trimethylpentane NLE 7.7 10 0.6 J2-Butanone 1100000 2.9 1.5 U 1.5 U2-Chlorotoluene 5100 1.0 U 1.0 U 1.0 U2-Hexanone NLE 2.0 U 2.0 U 2.0 UAllyl Chloride 100 1.6 U 1.6 U 1.6 U4-Ethyltoluene NLE 1.30 0.51 J 0.98 U4-Methyl-2-pentanone 660000 2.0 U 2.0 U 2.0 UAcetone 6800000 31 17 9.3 JBenzene 79 3.3 4.2 0.93Benzyl chloride NLE 1.0 U 1.0 U 1.0 UBromodichloromethane 34 0.3 J 1.3 U 1.3 UBromoethene 22 0.87 U 0.87 U 0.87 UBromoform 560 2.1 U 2.1 U 2.1 UBromomethane 1100 0.78 U 0.78 U 0.78 UCarbon disulfide 150000 0.40 J 1.60 U 1.60 UCarbon tetrachloride 100 0.58 J 0.45 J 0.45 JChlorobenzene 11000 0.92 U 0.92 U 0.92 UChloroethane 2200000 1.30 U 0.34 J 0.44 JChloroform 27 11 1.2 0.98 UChloromethane 20000 1.1 0.72 J 1.1cis-1,3-Dichloropropene NLE 0.91 U 0.91 U 0.91 UCyclohexane 1300000 3.2 5.1 0.22 JDibromochloromethane 43 1.7 U 1.7 U 1.7 UDichlorodifluoromethane 22000 3.8 2.4 J 2.2 JEthanol NLE 96 J 49 11Ethyl Acetate NLE 2.2 J 18 U 18 UEthylbenzene 250 3.2 2.7 0.68 JFreon TF 6600000 1.5 U 1.5 U 0.55 JFreon 114 NLE 1.4 U 1.4 U 1.4 UHexachlorobutadiene 53 2.1 U 2.1 U 2.1 UIsopropyl Alcohol NLE 5.1 J 2.1 J 2.6 Jm,p-Xylene NLE 12 9.4 2.3Methyl Methacrylate NLE 2.0 U 2.0 U 2.0 UMethyl tert-butyl ether 2400 0.54 J 0.55 J 0.72 UMethylene chloride 61000 0.8 J 1.8 2.1N-Heptane NLE 4.4 5.3 0.58 Jn-Hexane 150000 13 22 1.3o-Xylene NLE 4.1 3.4 0.75 JPropylene NLE 5.5 J 8.6 U 8.6 UStyrene 220000 0.85 U 0.75 J 0.85 UTert-butyl Alcohol NLE 15 U 15 U 15 UTetrahydrofuran NLE 15 U 15 U 15 UToluene 1100000 16 16 3.2Total Xylenes 22000 16 13 3.1trans-1,3-Dichloropropene NLE 0.91 U 0.91 U 0.91 UTrichlorofluoromethane 150000 17.0 7.5 1.2Vinyl acetate NLE 18 U 18 U 18 UNOTES:

AOC - Area of ConcernID - IdentifierNLE - No Limit EstablishedNJDEP - New Jersey Department of Environmental ProtectionJ – Estimated ValueR - Rejected ResultU - Not Detected Above Reporting Limitµg/m3 - micrograms per cubic meter

Highlighting notes exceedance of screening level.1The compound list for this table includes the compounds analyzed under the TO-15 analysis.

3Table 1 is the regulatory screening level used for comparison of the analytical results. 4Site Specific Criteria based on the lower screening levels for nonresidential or daycare child exposures (see Table 2-9).

2NJDEP Soil Gas Screening Levels as are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP updated March 2013.

VR-01 VR-02

NJDEP VIG Nonresidential

Generic Soil Gas Screening Levels2,3


Table 3-4Subslab Soil Gas Analytical Results: September 2014 and January 2015

Campus Plaza 4: Groundwater AOC 2Indoor Air Quality Report #11



Location ID: CP4-SG-2 CP4-SG-3 CP4-SG-4Sample ID: 21-CP4-SG-02 22-CP4-SG-02 21-CP4-SG-03 22-CP4-SG-03 21-CP4-SG-04 22-CP4-SG-04 21-CP4-SG-05 22-CP4-SG-05 01-DUP-SG-02 21-CP4-SG-06 01-DUP-SG-02 22-CP4-SG-06

Sample Type: Sample Sample Sample Sample Sample Sample Sample Sample Sample Sample Duplicate SampleLab Sample ID: 200-24173-9 200-26447-9 200-24173-10 200-26447-10 200-24173-11 200-26447-11 200-24173-12 200-26447-12 200-26447-13 200-24173-13 200-24173-14 200-26447-14

Date: 9/12/2014 1/23/2015 9/12/2014 1/23/2015 9/12/2014 1/23/2015 9/12/2014 1/23/2015 1/23/2015 9/12/2014 9/12/2014 1/23/2015Units: (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3)

Compound1

AOC 2 - COPCsTetrachloroethene 2400 4 7.7 12 24 0.36 J 37 38 200 170 190 9 13 7.7Trichloroethene 150 4 69 140 98 3 170 240 1300 1300 1500 14 20 13Vinyl chloride 140 4 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.18 U 0.93 U 1 U 1 U 0.1 U 0.1 U 0.1 UAOC 2 - Other Compounds1,1,2,2-Tetrachloroethane 34 1.4 U 0.68 J 1.4 U 1.4 U 1.4 U 2.5 U 12 U 14 U 14 U 1.4 U 1.4 U 1.4 U1,1,1-Trichloroethane 1100000 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 2.0 U 9.9 U 11.0 U 11.0 U 1.1 U 0.3 U 0.3 J1,1,2-Trichloroethane 38 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 2 U 9.9 U 11 U 11 U 1.1 U 1.1 U 1.1 U1,1-Dichloroethane 380 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 1.5 U 7.4 U 8.1 U 8.1 U 0.81 U 0.81 U 0.81 U1,1-Dichloroethene 44000 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 1.4 U 7.2 U 7.9 U 7.9 U 0.79 U 0.79 U 0.79 U1,2,4-Trichlorobenzene 440 3.7 U 0.27 J 3.7 U 3.7 U 3.7 U 6.7 U 34 U 37 U 37 U 3.7 U 3.7 U 3.7 U1,2,4-Trimethylbenzene NLE 4.3 5.3 1.3 0.46 J 0.16 J 1.8 U 8.9 U 9.8 U 9.8 U 2.4 0.31 J 0.98 U1,2-Dibromoethane 38 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 2.8 U 14 U 15 U 15 U 1.5 U 1.5 U 1.5 U1,2-Dichlorobenzene 44000 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 2.2 U 11 U 12 U 12 U 1.2 U 1.2 U 1.2 U1,2-Dichloroethane 24 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 1.5 U 7.4 U 8.1 U 8.1 U 0.81 U 0.81 U 0.81 U1,2-Dichloropropane 61 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 1.7 U 8.4 U 9.2 U 9.2 U 0.92 U 0.92 U 0.92 U1,2-Dichlorotetrafluoroethane NLE 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 2.5 U 13 U 14 U 14 U 1.4 U 1.4 U 1.4 U1,3,5-Trimethylbenzene NLE 1.7 1.5 0.51 J 0.98 U 0.98 U 1.8 U 8.9 U 9.8 U 9.8 U 0.93 J 0.13 J 0.98 U1,3-Butadiene 20 0.44 U 0.44 U 0.44 U 0.22 J 0.44 U 0.8 U 4 U 4.4 U 4.4 U 0.44 U 0.44 U 0.44 U1,3-Dichlorobenzene NLE 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 2.2 U 11 U 12 U 12 U 1.2 U 1.2 U 1.2 U1,4-Dichlorobenzene 56 1.2 U 4 1.2 U 1.2 U 1.2 U 2.2 U 11 U 12 U 12 U 1.2 U 1.2 U 1.2 U1,4-Dioxane NLE 18 U 1.2 J 18 U 18 U 18 U 32 U 160 U 180 U 180 U 18 U 18 U 18 U2,2,4-Trimethylpentane NLE 0.93 U 0.29 J 0.35 J 0.28 J 0.93 U 1.7 U 8.5 U 9.3 U 9.3 U 0.93 U 0.93 U 0.93 U2-Chlorotoluene 5100 1 U 1 U 1 U 1 U 1 U 1.9 U 9.4 U 10 U 10 U 1 U 1 U 1 UAllyl chloride 100 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 2.8 U 14 U 16 U 16 U 1.6 U 1.6 U 1.6 U4-Ethyltoluene NLE 2.1 0.93 J 0.33 J 0.98 U 0.98 U 1.8 U 8.9 U 9.8 U 9.8 U 1.2 0.98 U 0.98 UAcetone 6800000 54 28 12 5.3 J 18 4.5 J 110 U 120 U 120 U 33 18 3.7 JBenzene 79 0.37 J 0.86 0.34 J 0.84 0.35 J 0.25 J 5.8 U 6.4 U 6.4 U 0.19 J 0.64 U 0.64 UBenzyl chloride NLE 1 U 1 U 1 U 1 U 1 U 1.9 U 9.4 U 10 U 10 U 1 U 1 U 1 UBromodichloromethane 34 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 2.4 U 12 U 13 U 13 U 1.3 U 1.3 U 1.3 UBromoethene 22 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 1.6 U 8 U 8.7 U 8.7 U 0.87 U 0.87 U 0.87 UBromoform 560 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 3.7 U 19 U 21 U 21 U 2.1 U 2.1 U 2.1 UBromomethane 1100 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 1.4 U 7.1 U 7.8 U 7.8 U 0.78 U 0.78 U 0.78 UCarbon disulfide 150000 0.42 J 5.1 0.4 J 1.6 U 2 2.8 U 14 U 16 U 16 U 0.28 J 0.46 J 1.6 UCarbon tetrachloride 100 0.56 J 0.48 J 0.64 J 0.44 J 0.57 J 0.45 J 11 U 13 U 13 U 0.76 J 0.84 J 0.67 JChlorobenzene 11000 0.92 U 0.16 J 0.92 U 0.92 U 0.92 U 1.7 U 8.4 U 9.2 U 9.2 U 0.92 U 0.92 U 0.92 UChloroethane 2200000 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 2.4 U 12 U 13 U 13 U 1.3 U 1.3 U 1.3 UChloroform 27 0.96 1.8 1.4 0.98 U 4.8 5.7 25 21 24 2.5 3.2 3.3Chloromethane 20000 1.3 0.9 J 0.77 J 1.2 B 0.51 J 0.29 U 9.4 U 10 U 10 U 1 U 1 U 1 Ucis-1,2-Dichloroethene NLE 1.5 3.8 2.8 0.79 U 2.2 4.4 88 90 100 0.79 U 0.79 U 0.79 Ucis-1,3-Dichloropropene NLE 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 1.6 U 8.3 U 9.1 U 9.1 U 0.91 U 0.91 U 0.91 UCyclohexane 1300000 0.69 U 0.34 J 0.69 U 0.24 J 0.69 U 1.2 U 6.3 U 6.9 U 6.9 U 0.69 U 0.69 U 0.69 UDibromochloromethane 43 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 3.1 U 15 U 17 U 17 U 1.7 U 1.7 U 1.7 UDichlorodifluoromethane 22000 3.8 2.5 3.6 2.3 J 3.5 2.5 J 3.9 J 25 U 25 U 95 130 26

CP4-SG-5 CP4-SG-6








Location ID: CP4-SG-2 CP4-SG-3 CP4-SG-4Sample ID: 21-CP4-SG-02 22-CP4-SG-02 21-CP4-SG-03 22-CP4-SG-03 21-CP4-SG-04 22-CP4-SG-04 21-CP4-SG-05 22-CP4-SG-05 01-DUP-SG-02 21-CP4-SG-06 01-DUP-SG-02 22-CP4-SG-06

Sample Type: Sample Sample Sample Sample Sample Sample Sample Sample Sample Sample Duplicate SampleLab Sample ID: 200-24173-9 200-26447-9 200-24173-10 200-26447-10 200-24173-11 200-26447-11 200-24173-12 200-26447-12 200-26447-13 200-24173-13 200-24173-14 200-26447-14

Date: 9/12/2014 1/23/2015 9/12/2014 1/23/2015 9/12/2014 1/23/2015 9/12/2014 1/23/2015 1/23/2015 9/12/2014 9/12/2014 1/23/2015Units: (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3)

Compound1

CP4-SG-5 CP4-SG-6




Ethanol NLE 49 J 14 J 9.2 J 2.3 J 7.2 J 17 UJ 11 J 94 UJ 94 UJ 39 J 8.6 J 1.3 JEthyl acetate NLE 2.3 J 18 U 18 U 18 U 18 U 32 U 160 U 180 U 180 U 18 U 18 U 18 UEthylbenzene 250 0.89 2.7 0.2 J 0.87 U 0.87 U 1.6 U 7.9 U 8.7 U 8.7 U 0.47 J 0.87 U 0.87 UFreon TF 6600000 1.5 U 0.8 J 1.5 U 1.5 U 1.5 U 5 14 U 15 U 15 U 1.5 U 1.5 U 1.5 UHexachlorobutadiene 53 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 3.8 U 19 U 21 U 21 U 2.1 U 2.1 U 0.57 JIsopropyl alcohol NLE 5.6 J 11 J 0.99 J 0.37 J 1.3 J 22 U 110 U 120 U 120 U 3.5 J 1.4 J 12 Um,p-Xylene NLE 2.5 6.6 0.79 J 0.55 J 2.2 U 3.9 U 20 U 22 U 22 U 1.3 J 0.69 J 2.2 U2-Hexanone NLE 2 U 0.81 J 2 U 2 U 2 U 3.7 U 19 U 20 U 20 U 2 U 2 U 2 U2-Butanone 1100000 5.1 12 2.3 0.61 J 3.9 2.7 U 13 U 15 U 15 U 2.8 3.1 0.58 J4-Methyl-2-Pentanone 660000 0.87 J 2 J 0.19 J 2 U 2 U 3.7 U 19 U 20 U 20 U 0.4 J 0.16 J 2 UMethyl methacrylate NLE 2 U 2 U 2 U 2 U 2 U 3.7 U 19 U 20 U 20 U 2 U 2 U 2 UMethyl tert-butyl ether 2400 0.72 U 0.72 U 0.72 U 0.72 U 0.72 U 1.3 U 6.6 U 7.2 U 7.2 U 0.72 U 0.72 U 0.72 UMethylene Chloride 61000 34 6.3 U 13 9.9 B 2.2 0.96 U 3.8 J 17 U 4.6 U 21 3.7 0.49 Un-Heptane NLE 0.82 U 1.6 0.35 J 0.82 U 1.2 1.5 U 7.5 U 8.2 U 8.2 U 0.82 U 0.82 U 0.82 Un-Hexane 150000 3.2 0.83 1.7 1.1 0.7 U 1.3 U 6.4 U 7 U 7 U 1.8 0.25 J 0.7 UPropylene NLE 8.6 U 8.6 U 8.6 U 8.6 U 8.6 U 15 U 78 U 86 U 86 U 8.6 U 8.6 U 8.6 UStyrene 220000 0.53 J 0.37 J 0.85 U 0.85 U 0.85 U 1.5 U 7.7 U 8.5 U 8.5 U 0.85 U 0.85 U 0.85 Utert-Butyl alcohol NLE 2.2 J 1.9 J 1.3 J 15 U 15 U 27 U 140 U 150 U 150 U 15 U 1 J 15 UTetrahydrofuran NLE 1.7 J 1.9 J 1.1 J 15 U 15 U 27 U 130 U 150 U 150 U 0.99 J 15 U 15 UToluene 1100000 16 6.6 3 3 2.5 0.3 J 0.9 J 7.5 U 7.5 U 8.1 8.1 0.33 Jtrans-1,2-Dichloroethene 13000 0.79 U 0.18 J 0.79 U 0.79 U 0.79 U 1.4 U 1.9 J 2.7 J 3.2 J 0.79 U 0.79 U 0.79 Utrans-1,3-Dichloropropene NLE 0.91 U 0.91 U 0.91 U 0.91 U 1.5 1.6 U 8.3 U 9.1 U 9.1 U 0.91 U 0.91 U 0.91 UTrichlorofluoromethane 150000 29 35 31 4.6 37 33 200 310 350 85 110 71Vinyl acetate NLE 18 U 18 U 18 U 18 U 18 U 32 U 160 U 180 U 180 U 18 U 18 U 18 UTotal Xylenes 22000 3.4 9.2 1.1 0.56 J 0.87 U 1.6 U 7.9 U 8.7 U 8.7 U 2 1.1 0.87 Uo-Xylene NLE 0.96 2.8 0.35 J 0.87 U 0.87 U 1.6 U 7.9 U 8.7 U 8.7 U 0.66 J 0.41 J 0.87 U


1The compound list for this table includes the compounds analyzed under the TO-15 analysis.

3Table 1 is the regulatory screening level used for comparison of the analytical results. 4Site Specific Criteria based on nonresidential use (see Table 2-9).



Table 3-5Indoor Air Analytical Results: September 2014 and March 2015




Location ID: BG-01 165-1 165-2 165-3Sample ID: 26-165-BG-01 27-165-BG-01 26-165-IA-01 26-165-IA-02 27-165-IA-03

Sample Type: Background Background Sample Sample SampleLab Sample ID: 200-24170-4 200-27011-1 200-27011-2 200-27011-3 200-27011-4

Date: 9/12/2014 3/10/2015 3/10/2015 3/10/2015 3/10/2015Units: (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3)

NJDEP VIGResidential

Generic Indoor Air Screening

Levels2,3

Unless Noted

NJDEP VIG Nonresidential Generic Indoor Air Screening

Levels2,3

Unless NotedCompound1

(µg/m3) (µg/m3)AOC 2 - COPCsTetrachloroethene 9 4 47 4 1.4 U 1.4 U 1.4 U 1.4 U 0.24 J 1.4 U 1.4 U 1.4 U 0.32 JTrichloroethene 0.43 to 3 5 3 4 0.21 U 0.21 U 0.21 U 0.21 U 0.22 0.21 U 0.21 U 0.21 U 0.21 UVinyl chloride 0.16 to 1 6 0.22 to 3 7 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 UAOC 2 - Other Compounds1,1,1-Trichloroethane 5200 22000 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U1,1,2,2-Tetrachloroethane 3 3 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U1,1,2-Trichloroethane 3 3 1.1 U 1.1 U 1.1 U 0.8 J 0.7 J 1.1 U 1.1 U 1.1 U 1.1 U1,1-Dichloroethane 2 8 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U1,1-Dichloroethene 210 880 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U1,2,4-Trichlorobenzene 4 9 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U1,2,4-Trimethylbenzene NLE NLE 0.11 J 0.31 J 2.40 2.30 2.60 0.62 J 0.69 J 2.00 5.101,2-Dibromoethane 4 4 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U1,2-Dichlorobenzene 210 880 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U1,2-Dichloroethane 2 2 0.81 U 0.81 U 0.81 U 0.81 U 0.35 J 0.25 J 0.81 U 0.81 U 0.81 U1,2-Dichloropropane 2 2 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 Ucis-1,2-Dichloroethene NLE NLE 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 Utrans-1,2-Dichloroethene 63 260 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U1,3,5-Trimethylbenzene NLE NLE 0.98 U 0.98 U 0.79 J 0.60 J 0.70 J 0.16 J 0.20 J 0.54 J 1.301,3-Butadiene 1 1 0.44 U 0.44 U 0.44 U 0.44 U 0.44 U 0.44 U 0.44 U 0.44 U 0.44 U1,3-Dichlorobenzene NLE NLE 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U1,4-Dichlorobenzene 3 3 1.2 U 1.2 U 1.2 U 0.2 J 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U1,4-Dioxane NLE NLE 1.6 J 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 U2,2,4-Trimethylpentane NLE NLE 0.93 U 0.97 5.40 4.30 4.80 6.30 1.20 12.00 12.002-Butanone 5200 22000 1.50 U 1.50 U 2.90 2.90 4.40 3.60 2.20 1.40 J 2.202-Chlorotoluene NLE NLE 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U2-Hexanone NLE NLE 2.0 U 2.0 U 2.0 U 2.0 U 2.0 U 2.0 U 2.0 U 2.0 U 2.0 U3-Chloropropene 2 2 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U4-Ethyltoluene NLE NLE 0.98 U 0.98 U 0.81 J 0.63 J 0.69 J 0.24 J 0.22 J 0.55 J 1.604-Methyl-2-pentanone 3100 13000 2.0 U 2.0 U 2.0 U 2.0 U 0.85 J 2.0 U 2.0 U 2.0 U 2.0 UAcetone 32000 140000 10 J 8.6 J 20 20 43 23 15 17 18Benzene 2 2 0.30 J 1.1 1.5 1.6 2.4 0.85 1.2 1.4 4.6Benzyl chloride NLE NLE 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.0 U 1.0 UBromodichloromethane 3 3 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 UBromoethene 2 2 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 UBromoform 5 11 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 UBromomethane 5 22 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 UCarbon disulfide 730 3100 0.91 J 1.60 U 1.60 U 0.28 J 1.60 U 1.60 U 1.60 U 1.60 U 1.60 UCarbon tetrachloride 3 3 0.54 J 0.46 J 0.50 J 0.65 J 0.47 J 0.65 J 0.49 J 0.59 J 0.50 JChlorobenzene 52 220 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 UChloroethane 10000 44000 1.3 U 0.75 J 1.30 U 1.30 U 0.70 J 1.30 U 0.52 J 1.30 U 0.55 JChloroform 2 2 0.98 U 0.98 U 0.98 U 0.17 J 0.43 J 0.33 J 0.40 J 0.27 J 0.98 UChloromethane 94 390 1.4 1.7 1.4 1.5 2.3 1.3 1.3 1.5 1.3cis-1,3-Dichloropropene NLE NLE 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 UCyclohexane 6300 26000 0.69 U 0.32 J 2.40 2.60 2.00 0.74 0.72 1.40 4.60Dibromochloromethane 4 4 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 UDichlorodifluoromethane 100 440 3.4 3.2 3.5 3.7 3.2 3.8 2.6 3.7 2.6Ethanol NLE NLE 5.2 J 24 82 J 85 J 150 100 J 40 87 J 120Ethyl Acetate NLE NLE 18 U 18 U 4.6 J 6.9 J 9.2 J 18 U 3.2 J 2.0 J 2.6 JEthylbenzene 2 5 0.10 J 0.39 J 2.0 1.9 2.2 0.79 J 0.65 J 1.6 4.4Freon TF 31000 130000 0.6 J 0.6 J 1.5 U 1.5 U 1.5 U 1.5 U 0.6 J 1.5 U 0.6 JFreon 114 NLE NLE 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 UHexachlorobutadiene 5 5 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 UIsopropyl Alcohol NLE NLE 1.0 J 4.3 J 4.4 J 4.5 J 33 30 23 14 23m,p-Xylene NLE NLE 0.27 J 1.2 J 5.5 6.0 6.8 2.1 J 1.9 J 5.3 15Methyl Methacrylate NLE NLE 2.0 U 2.0 U 2.0 U 2.0 U 2.0 U 2.0 U 2.0 U 2.0 U 2.0 UMethyl tert-butyl ether 9 47 0.72 U 0.72 U 0.72 U 0.72 U 0.41 J 0.72 U 0.72 U 0.72 U 1.00Methylene chloride 96 1200 0.8 J 3.2 4.5 1.4 J 3.2 2.5 2.9 2.1 2.8N-Heptane NLE NLE 0.82 U 0.73 J 2.30 2.30 3.7 6.2 1.3 2.5 6.2n-Hexane 730 3100 0.24 J 2.0 7.90 8.20 9.7 2.9 2.9 6.1 23o-Xylene NLE NLE 0.87 U 0.40 J 1.90 2.00 2.3 0.80 J 0.69 J 1.8 5.0Propylene NLE NLE 8.6 U 8.60 U 8.60 U 8.60 U 8.6 U 8.6 U 8.6 U 8.6 U 8.6 UStyrene 1000 4400 0.85 U 0.85 U 0.41 J 0.48 J 1.50 0.85 U 0.45 J 0.85 U 0.85 UTert-butyl Alcohol NLE NLE 15 U 15 U 15 U 15 U 15 U 15 U 15 U 15 U 15 UTetrahydrofuran NLE NLE 15 U 15 U 15 U 15 U 15 U 0.48 J 15 U 15 U 15 UToluene 5200 22000 0.8 2.6 8.6 9.7 17 4.3 5.9 9.8 27Total Xylenes 100 440 0.3 J 1.6 7.5 8.1 9.2 2.9 2.6 7.0 20trans-1,3-Dichloropropene NLE NLE 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 UTrichlorofluoromethane 730 3100 1.7 1.5 12 14 8.6 9.3 3.7 9.4 5.5Vinyl acetate NLE NLE 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 UNOTES:

AOC - Area of ConcernID - IdentifierNLE - No Limit EstablishedNJDEP - New Jersey Department of Environmental ProtectionJ – Estimated ValueU - Not Detected Above Reporting Limitµg/m3 - micrograms per cubic meter DOD – Department of Defense


25-165-IA-01 01-DUP-IA-01 25-165-IA-02 26-165-IA-03Sample Duplicate Sample Sample

200-24170-5 200-24170-6 200-24170-7 200-24170-89/12/2014 9/12/2014 9/12/2014 9/12/2014

Note: for tetrachloroethene, the USACE nonresidential site-specific criterion is the lower of the worker or daycare child receptor.

1The compound list for this table includes the compounds analyzed under the TO-15 analysis.2NJDEP Indoor Air Screening Levels as are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 2013.3Table 1 is the regulatory screening level used for comparison of the analytical results.

5Residential screening criteria range from 0.43 µg/m3 (site-specific value) to 3 µg/m3

(NJDEP value).6Residential screening criteria range from 0.16 µg/m3 (site-specific value) to 1 µg/m3

(NJDEP value).7Nonresidential screening criteria range from 0.22 µg/m3 (site-specific daycare value) to 3 µg/m3 (NJDEP value).

4Site Specific and NJDEP screening criteria are the same value.

Table 3-5Indoor Air Analytical Results: September 2014 and March 2015




Location ID:Sample ID:

Sample Type:Lab Sample ID:

Date:Units:

NJDEP VIGResidential

Generic Indoor Air Screening

Levels2,3

Unless Noted

NJDEP VIG Nonresidential Generic Indoor Air Screening

Levels2,3


(µg/m3) (µg/m3)AOC 2 - COPCsTetrachloroethene 9 4 47 4

Trichloroethene 0.43 to 3 5 3 4

Vinyl chloride 0.16 to 1 6 0.22 to 3 7

AOC 2 - Other Compounds1,1,1-Trichloroethane 5200 220001,1,2,2-Tetrachloroethane 3 31,1,2-Trichloroethane 3 31,1-Dichloroethane 2 81,1-Dichloroethene 210 8801,2,4-Trichlorobenzene 4 91,2,4-Trimethylbenzene NLE NLE1,2-Dibromoethane 4 41,2-Dichlorobenzene 210 8801,2-Dichloroethane 2 21,2-Dichloropropane 2 2cis-1,2-Dichloroethene NLE NLEtrans-1,2-Dichloroethene 63 2601,3,5-Trimethylbenzene NLE NLE1,3-Butadiene 1 11,3-Dichlorobenzene NLE NLE1,4-Dichlorobenzene 3 31,4-Dioxane NLE NLE2,2,4-Trimethylpentane NLE NLE2-Butanone 5200 220002-Chlorotoluene NLE NLE2-Hexanone NLE NLE3-Chloropropene 2 24-Ethyltoluene NLE NLE4-Methyl-2-pentanone 3100 13000Acetone 32000 140000Benzene 2 2Benzyl chloride NLE NLEBromodichloromethane 3 3Bromoethene 2 2Bromoform 5 11Bromomethane 5 22Carbon disulfide 730 3100Carbon tetrachloride 3 3Chlorobenzene 52 220Chloroethane 10000 44000Chloroform 2 2Chloromethane 94 390cis-1,3-Dichloropropene NLE NLECyclohexane 6300 26000Dibromochloromethane 4 4Dichlorodifluoromethane 100 440Ethanol NLE NLEEthyl Acetate NLE NLEEthylbenzene 2 5Freon TF 31000 130000Freon 114 NLE NLEHexachlorobutadiene 5 5Isopropyl Alcohol NLE NLEm,p-Xylene NLE NLEMethyl Methacrylate NLE NLEMethyl tert-butyl ether 9 47Methylene chloride 96 1200N-Heptane NLE NLEn-Hexane 730 3100o-Xylene NLE NLEPropylene NLE NLEStyrene 1000 4400Tert-butyl Alcohol NLE NLETetrahydrofuran NLE NLEToluene 5200 22000Total Xylenes 100 440trans-1,3-Dichloropropene NLE NLETrichlorofluoromethane 730 3100Vinyl acetate NLE NLENOTES:

AOC - Area of ConcernID - IdentifierNLE - No Limit EstablishedNJDEP - New Jersey Department of Environmental ProtectionJ – Estimated ValueU - Not Detected Above Reporting Limitµg/m3 - micrograms per cubic meter DOD – Department of Defense


Note: for tetrachloroethene, the USACE nonresidential site-specific criterion is the lower of the worker or daycare child receptor.

1The compound list for this table includes the compounds analyzed under the TO-15 analysis.2NJDEP Indoor Air Screening Levels as are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 2013.3Table 1 is the regulatory screening level used for comparison of the analytical results.

5Residential screening criteria range from 0.43 µg/m3 (site-specific value) to 3 µg/m3

(NJDEP value).6Residential screening criteria range from 0.16 µg/m3 (site-specific value) to 1 µg/m3

(NJDEP value).7Nonresidential screening criteria range from 0.22 µg/m3 (site-specific daycare value) to 3 µg/m3 (NJDEP value).

4Site Specific and NJDEP screening criteria are the same value.

165-4 165-5 165-6 165-727-165-IA-04 01-DUP-IA-01 26-165-IA-05 27-165-IA-06 27-165-IA-07

Sample Duplicate Sample Sample Sample200-27011-5 200-27011-6 200-27011-7 200-27011-8 200-27011-9

3/10/2015 3/10/2015 3/10/2015 3/10/2015 3/10/2015(µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3)

1.4 U 0.33 J 0.27 J 4.5 U 0.26 J 3.4 U 1.4 U 3.4 U 1.4 U0.21 U 0.21 U 0.21 U 0.72 U 0.21 U 0.54 U 0.21 U 0.54 U 0.21 U0.1 U 0.1 U 0.1 U 0.34 U 0.1 U 0.26 U 0.1 U 0.26 U 0.1 U

1.1 U 1.1 U 1.1 U 3.6 U 1.1 U 2.7 U 1.1 U 2.7 U 1.1 U1.4 U 1.4 U 1.4 U 4.6 U 1.4 U 3.4 U 1.4 U 3.4 U 1.4 U1.1 U 0.7 J 1.1 U 3.6 U 1.1 U 2.7 U 1.1 U 2.7 U 1.1 U

0.81 U 0.81 U 0.81 U 2.70 U 0.81 U 2.00 U 0.81 U 2.00 U 0.81 U0.79 U 0.79 U 0.79 U 2.60 U 0.79 U 2.00 U 0.79 U 2.00 U 0.79 U3.7 U 3.7 U 3.7 U 12.0 U 3.7 U 9.3 U 3.7 U 9.3 U 3.7 U

2.80 3.00 3.00 0.44 J 0.76 J 2.50 U 1.50 2.50 U 0.98 U1.5 U 1.5 U 1.5 U 5.1 U 1.5 U 3.8 U 1.5 U 3.8 U 1.5 U1.2 U 1.2 U 1.2 U 4.0 U 1.2 U 3.0 U 1.2 U 3.0 U 1.2 U

0.81 U 0.73 J 0.70 J 2.50 J 0.81 U 2.0 U 0.81 U 2.00 U 0.81 U0.92 U 0.92 U 0.92 U 3.10 U 0.92 U 2.3 U 0.92 U 2.30 U 0.92 U0.79 U 0.79 U 0.79 U 2.60 U 0.79 U 2.0 U 0.79 U 2.00 U 0.79 U0.79 U 0.79 U 0.79 U 2.60 U 0.79 U 2.0 U 0.79 U 2.00 U 0.79 U0.78 J 0.86 J 0.82 J 3.30 U 0.22 J 2.5 U 0.41 J 2.50 U 0.98 U0.44 U 0.44 U 0.44 U 1.50 U 0.44 U 1.10 U 0.44 U 1.10 U 0.44 U1.2 U 1.2 U 1.2 U 4.0 U 1.2 U 3.0 U 1.2 U 3.0 U 1.2 U1.2 U 1.2 U 1.2 U 4.0 U 1.2 U 3.0 U 1.2 U 3.0 U 1.2 U18 U 18 U 18 U 60 U 18 U 45 U 18 U 45 U 18 U

5.20 5.80 5.60 2.00 J 1.20 2.30 U 4.00 2.30 U 0.93 U48.00 2.70 2.70 2.90 J 2.00 3.70 U 4.00 3.70 U 1.50

1.0 U 1.0 U 1.0 U 3.4 U 1.0 U 2.6 U 1.0 U 2.6 U 1.0 U2.0 U 2.0 U 2.0 U 6.8 U 2.0 U 5.1 U 2.0 U 5.1 U 2.0 U1.6 U 1.6 U 1.6 U 5.2 U 1.6 U 3.9 U 1.6 U 3.9 U 1.6 U

0.93 J 0.99 0.94 J 3.30 U 0.24 J 2.50 U 0.48 J 2.50 U 0.98 U2.0 U 2.0 U 2.0 U 6.8 U 2.0 U 5.1 U 2.0 U 5.1 U 2.0 U49 25 24 41 15 19 J 42 19 J 362.1 2.8 2.7 1 J 1.2 1.6 U 2 0.32 J 0.42 J1.0 U 1.0 U 1.0 U 3.4 U 1.0 U 2.6 U 1.0 U 2.6 U 1.0 U1.3 U 1.3 U 1.3 U 4.5 U 1.3 U 3.4 U 0.3 J 3.4 U 1.3 U

0.87 U 0.87 U 0.87 U 2.90 U 0.87 U 2.20 U 0.87 U 2.20 U 0.87 U2.1 U 2.1 U 2.1 U 6.9 U 2.1 U 5.2 U 2.1 U 5.2 U 2.1 U

0.78 U 0.78 U 0.78 U 2.60 U 0.78 U 1.90 U 0.78 U 1.90 U 0.78 U1.60 U 1.60 U 1.60 U 5.20 U 1.60 U 3.90 U 1.60 U 3.90 U 0.63 J0.58 J 0.50 J 0.47 J 4.20 U 0.40 J 0.47 J 0.52 J 0.54 J 0.29 J0.92 U 0.92 U 0.92 U 3.10 U 0.92 U 2.30 U 0.92 U 2.30 U 0.92 U1.30 U 0.52 J 0.51 J 4.40 U 0.54 J 3.30 U 0.47 J 3.30 U 0.49 J0.61 J 0.98 U 0.98 U 3.3 U 1.30 0.92 J 3.2 0.90 J 2.21.4 1.3 1.2 1.8 J 1.1 1.6 J 1.3 1.5 J 1.4

0.91 U 0.91 U 0.91 U 3.00 U 0.91 U 2.30 U 0.91 U 2.30 U 0.91 U2.10 2.30 2.20 2.30 U 0.55 J 2.30 2.40 2.00 1.201.7 U 1.7 U 1.7 U 5.7 U 1.7 U 4.3 U 1.7 U 4.3 U 1.7 U3.6 2.4 J 2.3 J 3.3 J 2.3 J 3.5 J 2.3 J 3.5 J 2.4 J72 J 71 67 67 40 330 1400 R 310 1400 R4.6 J 6.2 J 6.0 J 60 U 2.3 J 45 U 3.8 J 17 J 18 U2.3 2.7 2.6 0.88 J 0.69 J 2.20 U 1.50 0.17 J 0.87 U1.5 U 1.5 U 1.5 U 5.1 U 0.6 J 3.8 U 1.5 U 3.8 U 1.5 U1.4 U 1.4 U 1.4 U 4.7 U 1.4 U 3.5 U 1.4 U 3.5 U 1.4 U2.1 U 2.1 U 2.1 U 7.1 U 2.1 U 5.3 U 2.1 U 5.3 U 2.1 U4.9 J 15.0 14.0 220.0 260.0 R 82.0 8.5 J 83.0 5.7 J7.7 9.10 8.70 2.10 J 2.20 0.61 J 5.10 0.33 J 2.2 U2.0 U 2.0 U 2.0 U 6.8 U 2.0 U 5.1 U 2.0 U 5.1 U 2.0 U

0.16 J 0.53 J 0.51 J 2.4 U 0.72 U 1.80 U 0.30 J 1.80 U 0.72 U0.8 J 2.4 2.3 2.8 J 2.6 1.4 J 2.1 1.6 J 2.2

0.82 U 4.6 4.3 1.2 J 0.97 2.0 U 2.5 2.0 U 0.82 U8.7 11 11 3.8 3.0 0.83 J 9.0 0.99 J 1.402.5 3.1 2.9 0.81 J 0.81 J 0.20 J 1.8 0.20 J 0.87 U8.6 U 8.6 U 8.6 U 2.7 J 8.6 U 22 U 8.6 U 22 U 8.6 U

0.85 U 1.1 1.1 2.8 U 0.29 J 2.10 U 0.85 U 2.10 U 0.85 U15 U 15 U 15 U 50 U 15 U 38 U 4.5 J 38 U 15 U19 15 U 15 U 49 U 15 U 37 U 15 U 37 U 15 U12 18 17 4.8 4.3 1.3 J 9.5 1.9 J 0.3 J10 12 12 3.0 3.0 0.81 J 7.0 0.53 J 0.87 U

0.91 U 0.91 U 0.91 U 3.0 U 0.91 U 2.30 U 0.91 U 2.3 U 0.91 U11 8.2 7.9 13 3.4 10 6.9 10 6.618 U 18 U 18 U 59 U 18 U 44 U 18 U 44 U 18 U

26-165-IA-04Sample Sample

25-165-IA-05 26-165-IA-06 26-165-IA-07

200-24170-10 200-24170-11 200-24170-12Sample Sample

200-24170-99/12/2014 9/12/20149/12/2014 9/12/2014

Table 3-6Indoor Air Analytical Results: September 2014 and January 2015




Location ID: CP4-BG-01 CP4-1 CP4-2Sample ID: 21-CP4-BG-01 22-CP4-BG-01 21-CP4-IA-01 22-CP4-IA-01 21-CP4-IA-02 22-CP4-IA-02 21-CP4-IA-04 22-CP4-IA-04 21-CP4-IA-05 22-CP4-IA-05 01-DUP-IA-02 21-CP4-IA-06 01-DUP-IA-02 22-CP4-IA-06 01-CP-IA-07 02-CP4-IA-07

Sample Type: Background Background Sample Sample Sample Sample Sample Sample Sample Sample Duplicate Sample Duplicate Sample Sample SampleLab Sample ID: 200-24173-1 200-26447-1 200-24173-2 200-26447-2 200-24173-3 200-26447-3 200-24173-4 200-26447-4 200-24173-5 200-26447-5 200-26447-6 200-24173-6 200-24173-7 200-26447-7 200-24173-8 200-26447-8

Date: 9/12/2014 1/23/2015 9/12/2014 1/23/2015 9/12/2014 1/23/2015 9/12/2014 1/23/2015 9/12/2014 1/23/2015 1/23/2015 9/12/2014 9/12/2014 1/23/2015 9/12/2014 1/23/2015Units: (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3)

NJDEP VIGNonresidential Generic Indoor Air Screening

Levels2,3


(ug/m3)AOC 2 - COPCsTetrachloroethene 47 4 1.4 U 1.4 U 5.4 U 0.2 J 5.4 U 0.3 J 1.4 U 0.2 J 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 6.8 U 0.3 JTrichloroethene 3 4 0.21 U 0.21 U 0.86 U 0.44 0.85 U 0.44 0.21 U 0.21 U 0.21 U 0.18 J 0.21 U 0.21 U 0.21 U 0.21 U 1.10 U 0.84Vinyl chloride 2.8 4 0.1 U 0.1 U 0.41 U 0.1 U 0.41 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.51 U 0.1 UAOC 2- Other Compunds1,1,2,2-Tetrachloroethane 3 1.4 U 1.4 U 5.5 U 1.4 U 5.5 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 6.9 U 1.4 U1,1,1-Trichloroethane 22000 1.1 U 1.1 U 4.4 U 1.1 U 4.3 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 5.5 U 1.1 U1,1,2-Trichloroethane 3 1.1 U 1.1 U 4.4 U 1.1 U 4.3 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 5.5 U 1.1 U1,1-Dichloroethane 8 0.81 U 0.81 U 3.2 U 0.81 U 3.2 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 4 U 0.81 U1,1-Dichloroethene 880 0.79 U 0.79 U 3.2 U 0.79 U 3.1 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 4 U 0.79 U1,2,4-Trichlorobenzene 9 3.7 U 3.7 U 15 U 3.7 U 15 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 19 U 3.7 U1,2,4-Trimethylbenzene NLE 0.77 J 0.15 J 6.1 0.59 J 6.5 0.81 J 1.3 1 1 2 2 0.98 U 1.2 2.3 5.5 0.89 J1,2-Dibromoethane 4 1.5 U 1.5 U 6.1 U 1.5 U 6.1 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 7.7 U 1.5 U1,2-Dichlorobenzene 880 1.2 U 1.2 U 4.8 U 1.2 U 4.8 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 6 U 1.2 U1,2-Dichloroethane 2 0.81 U 0.81 U 3.2 U 0.81 U 3.2 U 0.81 U 0.81 U 0.81 U 0.36 J 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 4 U 0.81 U1,2-Dichloropropane 2 0.92 U 0.92 U 3.7 U 0.92 U 3.7 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 4.6 U 0.92 U1,2-Dichlorotetrafluoroethane NLE 1.4 U 1.4 U 5.6 U 1.4 U 5.6 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 7 U 1.4 U1,3,5-Trimethylbenzene NLE 6.8 0.98 U 2.8 J 0.19 J 3.3 J 0.2 J 0.45 J 0.16 J 0.37 J 0.98 U 0.98 U 0.98 U 0.5 J 0.98 U 2.3 J 0.25 J1,3-Butadiene 1 0.44 U 0.44 U 1.8 U 0.15 J 1.8 U 0.44 U 0.44 U 0.12 J 0.44 U 0.12 J 0.1 J 0.44 U 0.44 U 0.13 J 2.2 U 0.13 J1,3-Dichlorobenzene NLE 1.2 U 1.2 U 4.8 U 1.2 U 4.8 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 6 U 1.2 U1,4-Dichlorobenzene 3 1.2 U 1.2 U 4.8 U 1.2 U 4.8 U 1.2 U 1.2 U 1.2 U 1.2 U 0.33 J 1.2 U 1.2 U 1.2 U 1.2 U 6 U 1.2 U1,4-Dioxane NLE 18 U 18 U 72 U 18 U 72 U 18 U 18 U 18 U 18 U 18 U 1.7 J 18 U 18 U 0.66 J 90 U 18 U2,2,4-Trimethylpentane NLE 6.9 0.93 U 3.3 J 0.39 J 6.9 0.5 J 0.31 J 0.32 J 0.93 U 0.32 J 0.34 J 0.93 U 0.93 U 0.29 J 14 0.4 J2-Chlorotoluene NLE 1 U 1 U 4.1 U 1 U 4.1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 5.2 U 1 U3-Chloropropene 2 1.6 U 1.6 U 6.3 U 1.6 U 6.2 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 7.8 U 1.6 U4-Ethyltoluene NLE 1 0.98 U 2.5 J 0.98 U 2.8 J 0.98 U 0.49 J 0.13 J 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 3 J 0.98 UAcetone 140000 38 18 100 26 120 35 92 17 66 10 J 13 53 50 20 110 45Benzene 2 1.5 0.73 2.6 U 0.86 1.4 J 0.92 0.36 J 0.87 0.48 J 0.8 0.88 0.38 J 0.38 J 0.85 3.2 U 0.89Benzyl chloride NLE 1 U 1 U 4.1 U 1 U 4.1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 5.2 U 1 UBromodichloromethane 3 1.3 U 1.3 U 5.4 U 1.3 U 5.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 6.7 U 1.3 UBromoethene 2 0.87 U 0.87 U 3.5 U 0.87 U 3.5 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 4.4 U 0.87 UBromoform 11 2.1 U 2.1 U 8.3 U 2.1 U 8.2 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 10 U 2.1 UBromomethane 22 0.78 U 0.78 U 3.1 U 0.78 U 3.1 U 0.22 J 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 3.9 U 0.78 UCarbon disulfide 3100 1.6 U 0.13 J 6.2 U 1.6 U 6.2 U 1.1 J 4.8 1.6 U 1.7 1.6 U 0.6 J 1.9 1.6 U 0.32 J 7.8 U 0.2 JCarbon tetrachloride 3 0.49 J 0.45 J 5 U 0.45 J 5 U 0.45 J 0.53 J 0.46 J 0.63 J 0.43 J 0.43 J 0.58 J 0.55 J 0.4 J 6.3 U 0.43 JChlorobenzene 220 0.92 U 0.92 U 3.7 U 0.92 U 3.7 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 4.6 U 0.92 UChloroethane 44000 1.3 U 1.3 U 5.3 U 1.3 U 5.2 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 6.6 U 1.3 UChloroform 2 0.98 U 0.98 U 3.9 U 0.26 J 3.9 U 0.23 J 0.98 U 0.98 U 0.48 J 0.98 U 0.22 J 0.98 U 0.22 J 0.98 U 4.9 U 0.3 JChloromethane 390 1.5 1.1 B 4.1 U 1.3 B 4.1 U 1.4 B 1.7 1 B 1.5 1.1 B 1.1 B 1.5 1.4 1.1 B 5.2 U 1.3 Bcis-1,2-Dichloroethene NLE 0.79 U 0.79 U 3.2 U 0.79 U 3.1 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 4 U 0.79 Ucis-1,3-Dichloropropene NLE 0.91 U 0.91 U 3.6 U 0.91 U 3.6 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 4.5 U 0.91 UCyclohexane 26000 0.69 U 0.69 U 2.8 U 0.41 J 2.7 U 0.69 U 0.69 U 0.69 U 0.69 U 0.69 U 0.69 U 0.69 U 0.69 U 0.23 J 3.4 U 0.34 JDibromochloromethane 4 1.7 U 1.7 U 6.8 U 1.7 U 6.8 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 8.5 U 1.7 UDichlorodifluoromethane 440 3.6 2.1 J 17 7.6 7.8 J 3.5 3.7 2.1 J 3.7 2.1 J 2.2 J 3.7 3.4 2 J 11 J 4.4Ethanol NLE 8.7 J 6.5 J 470 220 R 490 210 R 43 J 24 J 62 J 45 J 51 J 42 J 44 J 56 J 540 280 REthyl acetate NLE 18 U 18 U 72 U 2.2 J 72 U 11 J 9.3 J 2.4 J 33 8.1 J 9.2 J 17 J 21 12 J 90 U 3 JEthylbenzene 5 12 0.13 J 3.3 J 0.45 J 2.5 J 0.56 J 0.44 J 0.33 J 0.39 J 0.87 U 0.87 U 0.28 J 0.87 U 0.26 J 1.3 J 0.53 JFreon TF 130000 0.63 J 0.56 J 6.1 U 1.5 U 6.1 U 1.5 U 1.5 U 0.51 J 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 0.52 J 7.7 U 1.5 UHexachlorobutadiene 5 2.1 U 2.1 U 8.5 U 2.1 U 8.5 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 11 U 2.1 UIsopropyl alcohol NLE 1.7 J 3.3 J 140 33 98 73 9.7 J 3.7 J 20 8.6 J 20 12 12 39 140 61m,p-Xylene NLE 1.2 J 0.36 J 4.1 J 1.3 J 4.1 J 1.8 J 0.91 J 1.1 J 0.94 J 0.63 J 0.68 J 0.55 J 0.77 J 0.67 J 3.4 J 2 J2-Hexanone NLE 2 U 2 U 8.2 U 2 U 8.1 U 2 U 2 U 2 U 2 U 2 U 2 U 2 U 2 U 2 U 10 U 2 U2-Butanone 22000 2.7 1.1 J 5.9 U 2.8 6.6 4.3 4 1.4 J 2.5 1 J 1.4 J 3.6 2.5 3.3 10 36

(µg/m3)

CP4-7

(µg/m3)

CP4-4 CP4-5 CP4-6





Location ID: CP4-BG-01 CP4-1 CP4-2Sample ID: 21-CP4-BG-01 22-CP4-BG-01 21-CP4-IA-01 22-CP4-IA-01 21-CP4-IA-02 22-CP4-IA-02 21-CP4-IA-04 22-CP4-IA-04 21-CP4-IA-05 22-CP4-IA-05 01-DUP-IA-02 21-CP4-IA-06 01-DUP-IA-02 22-CP4-IA-06 01-CP-IA-07 02-CP4-IA-07

Sample Type: Background Background Sample Sample Sample Sample Sample Sample Sample Sample Duplicate Sample Duplicate Sample Sample SampleLab Sample ID: 200-24173-1 200-26447-1 200-24173-2 200-26447-2 200-24173-3 200-26447-3 200-24173-4 200-26447-4 200-24173-5 200-26447-5 200-26447-6 200-24173-6 200-24173-7 200-26447-7 200-24173-8 200-26447-8

Date: 9/12/2014 1/23/2015 9/12/2014 1/23/2015 9/12/2014 1/23/2015 9/12/2014 1/23/2015 9/12/2014 1/23/2015 1/23/2015 9/12/2014 9/12/2014 1/23/2015 9/12/2014 1/23/2015Units: (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3)


Levels2,3


(ug/m3)

(µg/m3)

CP4-7

(µg/m3)

CP4-4 CP4-5 CP4-6

4-Methyl-2-Pentanone 13000 2 U 2 U 8.2 U 2 U 1.7 J 2 U 0.72 J 2 U 0.25 J 2 U 2 U 0.42 J 0.28 J 2 U 10 U 2 UMethyl methacrylate NLE 2 U 2 U 8.2 U 2 U 8.1 U 2 U 2 U 2 U 2 U 2 U 2 U 2 U 2 U 2 U 10 U 2 UMethyl tert-butyl ether 47 0.72 U 0.72 U 2.9 U 0.72 U 2.9 U 0.72 U 0.72 U 0.72 U 0.72 U 0.72 U 0.72 U 0.72 U 0.72 U 0.72 U 3.6 U 0.72 UMethylene Chloride 1200 4.3 1.5 U 23 6.8 U 35 13 B 5.2 10 B 1.3 J 1.3 U 1.2 U 1.1 J 1.1 J 1.1 U 31 11 Bn-Heptane NLE 2.4 0.82 U 3.8 1.8 4.2 1.1 0.82 U 0.53 J 0.82 U 2.7 3.1 0.82 U 0.82 U 0.78 J 2.4 J 0.99n-Hexane 3100 2.9 0.31 J 2.6 J 1.1 5.5 1.8 0.69 J 1.3 0.7 U 0.44 J 0.46 J 0.23 J 0.7 U 0.36 J 3 J 1.6Propylene NLE 8.6 U 8.6 U 34 U 8.6 U 34 U 8.6 U 8.6 U 8.6 U 8.6 U 8.6 U 8.6 U 8.6 U 8.6 U 8.6 U 43 U 8.6 UStyrene 4400 0.85 U 0.85 U 1.1 J 0.34 J 1.4 J 0.37 J 0.27 J 0.85 U 0.26 J 0.12 J 0.85 U 0.85 U 0.29 J 0.15 J 1.1 J 0.5 Jtert-Butyl alcohol NLE 15 U 15 U 61 U 0.5 J 60 U 4.8 J 15 U 15 U 15 U 15 U 15 U 15 U 15 U 15 U 76 U 0.72 JTetrahydrofuran NLE 15 U 15 U 59 U 1.2 J 59 U 2.6 J 15 U 15 U 15 U 15 U 15 U 15 U 15 U 15 U 2.6 J 2.2 JToluene 22000 1.9 0.83 12 4.2 16 5.9 2.8 3.7 3.1 2.1 2.2 2.2 2.2 2.4 15 6trans-1,2-Dichloroethene 260 0.79 U 0.79 U 3.2 U 0.79 U 3.1 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 4 U 0.79 Utrans-1,3-Dichloropropene NLE 0.91 U 0.91 U 3.6 U 0.91 U 3.6 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 4.5 U 0.91 UTrichlorofluoromethane 3100 2.4 1.3 34 6.6 30 5.7 13 4.3 22 3.9 3.8 20 19 3.7 33 6.4Vinyl acetate NLE 18 U 18 U 70 U 18 U 70 U 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 U 88 U 18 UTotal Xylenes 440 1.2 0.36 J 5.9 1.8 5.8 2.5 1.3 1.5 1.4 0.89 0.98 0.56 J 1.2 0.96 4.9 2.8o-Xylene NLE 0.87 U 0.87 U 1.8 J 0.48 J 1.7 J 0.68 J 0.38 J 0.38 J 0.46 J 0.23 J 0.28 J 0.87 U 0.37 J 0.31 J 1.5 J 0.79 J

NOTES:AOC - Area of ConcernID - IdentifierNLE - No Limit EstablishedNJDEP - New Jersey Department of Environmental ProtectionJ – Estimated ValueU - Not Detected Above Reporting Limitµg/m3 - micrograms per cubic meter DOD – Department of Defense


2NJDEP Indoor Air Screening Levels as are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 2013.

4Site Specific Criteria based on nonresidential use (see Table 2-9).


3Table 1 is the regulatory screening level used for comparison of the analytical results.


Table 3-7Meteorological Data Summary - Groundwater AOC 2


Dates Sampled Temperature Range (F)

Barometric Pressure Station Average

(inches of Hg)Precipitation

(inches) September 2014

9/11/2014 66 - 86 29.88 Trace9/12/2014 61 - 80 30.03 0

January 20151/22/2015 30 - 40 30.19 Trace1/23/2015 25 - 40 30.22 Trace

March 20153/9/2015 32 - 54 30.12 0.01

3/10/2015 34 - 53 30.19 0.43

Meteorological data obtained from the NOAA National Climatic Data Center (Station Location: Newark Liberty International AP (14734)


Table 3-8165 Fieldcrest Avenue Sample Summary


Matrix Number of Samples* Parameters/Method Date Sampled5 9/12/20145 3/10/20151 9/12/20142 3/10/20158 9/12/20148 3/10/20151 9/12/20141 3/10/2015

* Includes dupicate samples.

Subslab Soil Gas VOCs/TO-15

Vapor Recovery VOCs/TO-15

Background VOCs/TO-15

Indoor Air VOCs/TO-15


Table 3-9Campus Plaza 4 Sample Summary


Matrix Number of Samples* Parameters/Method Date Sampled6 9/12/20146 1/23/20157 9/12/20147 1/23/20151 9/12/20141 1/23/2015








4-1

February 2016

4. GROUNDWATER AOC 6

4.1 OVERVIEW

Groundwater AOC 6 is located in the central portion of the former Raritan Arsenal. AOC 6

consists of three smaller plumes, Groundwater AOC 6A, AOC 6B, and AOC 6C. The northern

extent of Groundwater AOC 6A lies north of the building located at 110 Fernwood Avenue and

underlies a portion of soil Investigation Area 10 within Raritan Center and a portion of Soil

Investigation Area 9. This plume extends into the wetland south of the building located at 45

Fernwood Avenue. The northern extent of Groundwater AOC 6B lies north of the building

located at 104 Sunfield Avenue and extends just south of the southern boundary of Area 19. The

Groundwater AOC 6C boundary begins just south of the southeastern side of the Raritan Expo

Center and encompasses a portion of a parking lot, a landscaped area, a portion of a wetland

area, and an undeveloped area of Area 8.

With the exception of possible DOD-related storage activities associated with Building 520

(Groundwater AOC 6C), source area(s) have not been identified for the AOC as a whole. Other

potential sources identified during a previously conducted file review may have included site

activities not related to DOD activities (e.g., light manufacturing or industrial processes).

The Supplemental Groundwater Data Report (Weston, 2006b) summarized findings of the

evaluation of groundwater for VI potential. A total of nine buildings within Groundwater AOC 6

were previously evaluated to determine which specific buildings would require subslab soil gas

sampling. Of the nine buildings evaluated, two were not included in the sampling program based

on existing groundwater data near the buildings that showed little to no contamination. The

remaining seven buildings were sampled for subslab soil gas during the initial sampling effort

conducted in March/April 2006. Since that time, only 102-168 Fernwood Avenue remains under

evaluation and was last sampled in April 2011 (Weston, 2012). Figure 4-1 developed previously

by Weston depicts PCE and TCE results that were reported in IAQ Report #7 (Weston, 2012).

Groundwater analytical data from 2005 to the present were reviewed and compared to the

screening levels presented in Table 1 of NJDEP’s VIG (March 2013) and EPA Table 2C to




4-2

February 2016

identify the COPCs in Groundwater AOC 6A. Table 4-1 provides data for all VOCs detected in

groundwater samples within 100 ft of Groundwater AOC 6A since 2005. The COPCs in

Groundwater AOC 6A are TCE and vinyl chloride.

4.2 102-168 FERNWOOD AVENUE

Based on past investigations of VI potential, 102-168 Fernwood Avenue is the only building

within Groundwater AOC 6 that requires periodic monitoring under the VI monitoring program.

Building 102-168 Fernwood, is being sampled on a 5-year frequency with annual inspections of

the subslab vapor mitigation system to ensure it is operating effectively and monthly checks of

the vacuum at ports. The building is currently occupied and is being used for

commercial/industrial use such as warehouse and office space. It is surrounded by parking areas

and roadways with some landscaped areas.


Since March 2006, there have been eight sampling events in 102-168 Fernwood with the most

recent round of sampling in April 2011. Historical results showed elevated levels of TCE and

PCE in subslab soil gas samples and intermittently in indoor air samples.

Between September 28, 2009 and October 2, 2009, USACE installed an electrically-powered

subslab venting (SSV) system as a pre-emptive vapor mitigation measure to protect against

potential future exposures. In March 2011, USACE converted the existing SSV system to a solar

powered system and performed subsequent monitoring to assess performance. This system does

not have an alarm. It is inspected monthly to ensure it is operating effectively.

The most recent samples collected as part of the ongoing monitoring program were collected in

April 2011 and presented in IAQ Report #7 (Weston, 2012). The April 2011 results showed TCE

concentrations detected in subslab soil gas samples above the nonresidential screening levels.

Indoor air samples were collected concurrent with the subslab soil gas samples and there were no

TCE concentrations above the nonresidential screening level.




4-3

February 2016

Additional subslab soil gas and indoor air samples were collected in November 2011 and June

2012 as part of a performance evaluation of the SSV system. The results of the performance

evaluation are presented in IAQ Report #9 (Weston, 2014a). Both sampling rounds showed

TCE results above the nonresidential subslab soil gas criteria. No other compounds were

detected above criteria. TCE results were less than the NJDEP VIG criteria for indoor air and the

site-specific nonresidential criteria for indoor air during the November 2011 sampling event. All

other sample results were below the nonresidential NJDEP VIG and site-specific subslab soil gas

criteria. VR samples were collected in March 2011, June 2011, November 2011, and June 2012

for TCE, PCE, and cis-1,2-DCE. All results were below the NJDEP VIG and site-specific

subslab soil gas criteria. These sample results show the recovery system is operating as designed

and the soil gas concentrations have been decreasing over time.


No sampling activities were performed in September 2014 or January 2015. The annual

inspection report is provided in Appendix D.


The historical presence of TCE in both the subslab soil gas and nearby downgradient

groundwater sampling location at MW-47, 100 ft away, suggests the possibility of a VI pathway

into the 102-168 Fernwood Avenue building. However, based on the most recent analytical

results for SSSG, IA, and VR samples, the installation of the subslab vapor mitigation system

appears to have addressed this potential. To ensure continued effectiveness of the VR system,

monthly visual inspections of subslab system by USACE including vacuum checks is

recommended, along with an annual inspection of the VR system and 5 year frequency sampling.

The next sampling round is scheduled for 2017.

FIGURES

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102FERN-04

Parameter [Criteria] 09/29/06 04/05/07 11/13/07 06/19/08 10/02/08 02/13/09 09/11/09 04/29/11 TETRACHLOROETHYLENE [9] 2.5 1.4 U 1.4 U 4.75 3.32 0.47 0.27 J 0.27 U TRICHLOROETHYLENE [3] 1.1 U 1.1 U 1.1 U 1.61 1.24 0.21 J 0.21 U 0.21 U

102FERN-03

Parameter [Criteria] 09/29/06 04/05/07 11/13/07 06/19/08 10/02/08 02/13/09 09/11/09 04/29/11 TETRACHLOROETHYLENE [9] 1.4 U 1.4 U 1.4 U 4.41 0.27 J 0.2 U 0.27 J 0.27 U TRICHLOROETHYLENE [3] 1.1 U 1.1 U 1.1 U 0.38 0.21 U 0.27 0.21 U 0.21 U

102FERN-02

Parameter [Criteria] 09/29/06 04/05/07 11/13/07 06/19/08 10/02/08 02/13/09 09/11/09 04/29/11 TETRACHLOROETHYLENE [9] 1.4 U 1.4 U 1.4 U 0.47 0.47 0.68 14.99 0.35 TRICHLOROETHYLENE [3] 1.1 U 1.1 U 1.1 U 0.48 0.38 0.32 0.21 U 0.48

102FERN-01

Parameter [Criteria] 09/29/06 04/05/07 11/13/07 06/19/08 10/02/08 02/13/09 09/11/09 04/29/11 TETRACHLOROETHYLENE [9] 88 1.4 U 1.4 U 0.41 0.34 0.47 0.68 J 0.26 J TRICHLOROETHYLENE [3] 1.1 U 1.1 U 1.1 U 0.59 0.21 U 0.43 0.21 U 0.64

102FERN-05

Parameter [Criteria] 09/29/06 04/05/07 11/13/07 06/19/08 10/02/08 02/13/09 09/11/09 04/29/11 TETRACHLOROETHYLENE [9] 1.4 U 1.4 U 1.4 U 4.54 0.61 0.2 U 0.34 J 0.27 U TRICHLOROETHYLENE [3] 1.1 U 1.1 U 1.1 U 0.38 0.27 0.21 U 0.21 U 0.21 U

102FERN-06

Parameter [Criteria] 09/29/06 04/05/07 11/13/07 06/19/08 10/02/08 02/13/09 09/11/09 04/29/11 TETRACHLOROETHYLENE [9] 1.4 U 1.4 U 1.4 U 0.33 U 0.27 U 0.2 U 0.27 J 0.27 U TRICHLOROETHYLENE [3] 1.1 U 1.1 U 1.1 U 0.38 0.21 U 0.21 U 0.21 U 0.21 U

102FERN-07

Parameter [Criteria] 02/13/09 09/11/09 04/29/11 TETRACHLOROETHYLENE [9] 88.36 0.47 J 0.32 TRICHLOROETHYLENE [3] 0.7 0.21 U 0.86

168 FERNWOOD AVENUE

102 FERNWOOD AVENUE

102FERN-SG-01

Parameter [Criteria] 03/28/06 09/29/06 04/06/07 11/13/07 06/20/08 10/02/08 02/13/09 09/11/09 04/29/11 TETRACHLOROETHYLENE [470] 14 36 14 U 14 U 7.12 1.76 5.09 1.02 J 8.1 TRICHLOROETHYLENE [27] 11 U 11 U 11 U 11 1.13 0.32 3.06 0.21 U 56.4

102FERN-SG-02

Parameter [Criteria] 03/29/06 09/29/06 04/06/07 06/30/08 10/02/08 02/13/09 09/11/09 04/29/11 TETRACHLOROETHYLENE [470] 16 14 U 14 U 46.18 1.08 70.93 44.01 262 TRICHLOROETHYLENE [27] 22 28 32 48.1 1.07 116.08 D 49.01 537

102FERN-SG-04

Parameter [Criteria] 03/29/06 09/29/06 04/06/07 11/13/07 06/20/08 10/02/08 02/13/09 09/11/09 04/29/11 TETRACHLOROETHYLENE [470] 26 14 U 14 U 14 U 21.43 13.09 80.76 13.12 15 TRICHLOROETHYLENE [27] 13 11 U 11 U 18 44.66 27.46 114.47 D 32.08 43

102FERN-SG-03

Parameter [Criteria] 03/29/06 09/29/06 04/06/07 06/30/08 10/02/08 02/13/09 09/11/09 04/29/11 TETRACHLOROETHYLENE [470] 22 14 U 14 U 21.23 10.58 2.24 0.61 J 1.1 U TRICHLOROETHYLENE [27] 30 750 52 851.28 D 486.91 D 48.48 5.48 22

102FERN-SG-05

Parameter [Criteria] 03/29/06 09/29/06 04/06/07 11/13/07 06/20/08 10/02/08 02/13/09 09/24/09 04/29/11 TETRACHLOROETHYLENE [470] 14 U 14 U 14 U 14 U 2.31 1.22 3.39 0.47 J 1.5 TRICHLOROETHYLENE [27] 11 U 11 U 11 U 11 U 0.7 0.32 2.69 0.21 U 0.86 U DR

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1. Building Area: 141,000 square feet.2. Subslab Soil Gas and Indoor Air Results are compared to the 2013 NJDEP VIG Table 1 Residential Criteria for each specific matrix.3. The Site Specific Residential Indoor Air Criteria for TCE is 0.43 ug/m3 and PCE is 9.4 ug/m3.4. The Site Specific Residential Subslab Soil Gas Criteria for TCE is 22 ug/m3 and PCE is 468 ug/m3.5. Vapor Mitigation System installed in October 2009 and modified to a passive system in March 2009. See Appendix C for post mitigation system performance results.NJDEP = New Jersey Department of Environmental ProtectionPCE = TetrachloroethyleneTCE = Trichloroethylene D = Diluted ResultJ = Estimated ValueU = Undetected ResultVIG = Vapor Intrusion Guidance

Notes:

RESULTS & CRITERIA ARE LISTED IN MICROGRAMS PER CUBIC METER (ug/m3)

Legend:

Building Boundary

Indoor Air Sample LocationSubslab Soil Gas Sample Location

!(

?

Exceeds NJ VIG Criteria (2)(3)(4)52

Ambient Air Sample Locationk

Soil Gas Sample ResultsIndoor Air Sample Results

60 0 60 12030Graphic Scale In Feet

Ambient Air Sample Result

Herbert

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Tables

FUDS Project Number CO2NJ0084-02IAQ Report #11_Sect4 Tables_Final PAGE 1 of 1 2/4/2016


Table 2C USEPA Table 1Screening Level NJDEP Groundwater Maximum Most Recent

for Groundwater2 Screening Levels3 Concentration Concentration4

(ug/L) (ug/L) (ug/L) (ug/L)TRICHLOROETHYLENE 5 2 MW-47A 97 7/6/2010 19 9/7/2012VINYL CHLORIDE 2 1 MW-47A 9 7/6/2010 7 9/7/20121,1-DICHLOROETHANE 2200 50 MW-47A 8 7/6/2010 2.4 9/7/20121,1-DICHLOROETHENE 190 260 MW-47A 5 7/6/2010 2 9/7/20121,4-DIOXANE NA NA MW-47A 38 J 9/7/2012 38 J 9/7/2012BENZENE 5 20 MW-47A 3.4 7/6/2010 2.7 9/7/2012CIS-1,2-DICHLOROETHENE 210 NA MW-47A 350 7/6/2010 180 9/7/2012TRANS-1,2-DICHLOROETHENE 180 520 MW-47A 2.1 7/6/2010 1.4 9/7/2012

NOTES:

ug/L - micrograms per liter J - Estimated Value NA - Not AvailableND - Not Detected

4 Most recent concentration at location where maximum concentration was detected.Bolded and Shaded - Exceedance of NJDEP Table 1 Screening Level

Constituent


Sample DateSample Location Sample Date

Table 4-1Contaminants of Potential Concern1 - GROUNDWATER AOC 6A

Using NJDEP's Subsurface Vapor Intrusion GuidanceComparison of Maximum Groundwater Concentrations by Constituent

3 NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated January 2013.

1 COPCs are any chemicals detected in monitoring wells within 100 feet of defined plume boundary from 2005 to 2012 (most recent available data).2 From EPA's November 2002 "Draft Guidance for Evaluating the Vapor Intrusion to Indoor Air Pathway from Groundwater and Soils".




5-1

February 2016

5. SAMPLING RESULTS FOR GROUNDWATER AOC 8 A/B

The following buildings were evaluated and/or monitored for VI issues in AOC 8 A/B:

EPA Building 10;

EPA Building 18:

EPA Building 200; and

EPA Building 205.

This section focuses on sampling results for subslab soil gas and indoor air collected from

September 2014 and January 2015 to evaluate the potential for VI at the four buildings in the

vicinity of Groundwater AOC 8 A/B. Prior to the discussion of the SSSG and IA results, a

historical description of Groundwater AOC 8 is presented.

5.1 OVERVIEW OF GROUNDWATER AOC 8

Groundwater AOC 8 is located near the northern boundary of the former Raritan Arsenal in the

central portion of the site, in the vicinity of soil Investigation Area 18E. On the basis of

groundwater data from the Supplemental Groundwater Data Report (Weston, 2006b),

Groundwater AOC 8 has been further subdivided into three smaller plumes: AOC 8A/B, AOC

8C, and AOC 8D. The footprint of AOC 8A/B encompasses the former motor pool (Building

238) and the former GSA automotive shop (Building 241), which are known DOD-related

sources of chlorinated solvents. Due to historical VOC concentrations detected in soil and

groundwater within AOC 8A/B, IAQ sampling has been conducted at buildings within 100 ft of

the groundwater plume. The historical SSSG and IA analytical results for the four buildings

potentially impacted by AOC 8A/B are provided in Appendix M.

In contrast, there are no buildings within 100 ft of AOC 8C and AOC 8D. The Groundwater

Remedial Action Work Plan (GWRAWP, Weston, 2008b) recommended monitored natural

attenuation (MNA) as the remedial action for Groundwater AOCs 8C and 8D. The Final

GWRAWP Amendment was submitted to the NJDEP and recommended including AOC 8A/B in




5-2

February 2016

the MNA program. In a letter dated 14 February 2014, NJDEP agreed that MNA was a viable

alternative for AOC 8A/B.

The only COPC in Groundwater AOC 8A/B is TCE as described in the Draft GW/VI FS

(Weston, 2013). Groundwater analytical data from 2005-present were reviewed and compared to

screening levels presented in Table 1 of NJDEP’s VIG (March 2013) and EPA Table 2C (2002)

to identify the COPCs in Groundwater AOC 8 A/B. Table 5-1 provides data for all VOCs

detected in groundwater samples within 100 ft of Groundwater AOC 8 A/B since 2005. TCE was

the only constituent with concentrations that exceeded screening criteria.

5.1.1 Building Survey

Two weeks prior to the collection of the IA samples, a site walk-through was conducted and a

NJDEP Building Survey and Sampling Form was completed for each building. No products or

chemicals were observed during the building inspections that could be considered a potential

VOC emissions source. The Indoor Air Building Survey and Sampling Forms are included as

Appendix G.

5.1.2 Subslab Soil Gas

SSSG sample results in the vicinity of Groundwater AOC 8 A/B are discussed in the following

subsections and are provided in Tables 5-2 (Building 10), 5-3 (Building 18), 5-4 (Building 200),

and 5-5 (Building 205).

5.1.3 Indoor Air

The indoor air analytical results for the buildings within Groundwater AOC 8 A/B are discussed

in the following subsections and are provided in Tables 5-6 (Building 10), 5-7 (Building 18), 5-8

(Building 200), and 5-9 (Building 205).


Meteorological data corresponding to each sampling event were obtained from the National

Climatic Data Center for Newark Liberty International Airport. The meteorological data during




5-3

February 2016

the sampling of the Groundwater AOC 8 A/B buildings are summarized in Table 5-10. See

Appendix H for the complete meteorological data.

5.2 EPA BUILDING 10

EPA Building 10 is located within the western portion of Groundwater AOC 8A/B and

upgradient of Building 205. Building 10 is a two-story brick building built on a concrete slab on

grade located within the Groundwater AOC 8A/B plume. The building consists of office space

and is surrounded by a parking lot with a small landscaped lawn area. This building has never

been identified as an area of investigation or a former DOD occupancy requiring investigation.

From January 2005 through February 2014, 20 sampling events were conducted by USACE.

During the September 2014 and January 2015 sampling events, investigation activities included

collecting subslab soil gas, indoor air, and background ambient air samples for analysis.


Subslab soil gas samples have been collected at Building 10 since December 2004 by the EPA

and USACE. TCE, PCE, benzene, and chloroform concentrations have been detected in soil gas

and indoor air exceeding the nonresidential NJDEP VIG screening levels that were available at

the time of the sampling.

Investigation Area 18E soil and groundwater historical analytical results, less than 100 ft away

from Building 10, indicated the presence of TCE in both media. The available data suggested

that soil may be a potential source of TCE concentrations in subslab soil gas beneath and within

Building 10. During investigations performed by EPA in 2004, TCE was detected in the indoor

air within Building 10. EPA installed a subslab mitigation system at Building 10 in 2005 due to

the presence of TCE in the indoor air.

Since the installation of the subslab mitigation system, PCE concentrations have periodically

been detected in indoor air exceeding nonresidential screening levels. PCE and TCE have also

been occasionally detected in subslab soil gas exceeding site-specific nonresidential screening

levels.




5-4

February 2016

Methylene chloride concentrations in indoor air exceeded nonresidential screening levels in the

past. However, methylene chloride was not detected in the groundwater and is considered a non-

DOD compound of concern along with being a common laboratory contaminant.

Subslab and indoor air analytical results from September 2011 and February 2012 sampling

events indicate there is not a complete VI exposure pathway. Subslab soil gas concentrations of

TCE during the February 2013 event exceeded its nonresidential screening level. However, TCE

did not exceed indoor air screening levels. No other VOCs exceeded screening levels.

Subslab and indoor air analytical results from September 2013 and February 2014 sampling

events indicated there is not a complete VI exposure pathway.


During September 2014 and January 2015, two SSSG locations and two IA locations were

sampled at Building 10 from the same locations as those sampled during past sampling events

(see Figure 5-1). The most recent sample results were compared with the NJDEP nonresidential

screening levels or the nonresidential site-specific screening levels (when available).




no clearly identifiable sources of VOCs (in particular, TCE) observed.



presented in Appendix L. Table 5-11 summarizes the samples collected during the current

investigation at Building 10.


TCE exceeded its nonresidential site-specific soil gas screening level in September 2014 at one

location (010-SG-04). TCE did not exceed its soil gas screening level in January 2015. There

were no other VOCs detected above the nonresidential screening levels during the September




5-5

February 2016

2014 and January 2015 sampling events at Building 10. A summary of the analytical data is

provided on Table 5-2. The TCE and PCE analytical subslab soil gas results from October 2012

to January 2015 are shown on Figure 5-1. The SSD system was operating at the time of the

sampling.


During September 2014, TCE (10 µg/m3) exceeded its nonresidential site-specific screening

level at one location (010-3). TCE was detected at 31 µg/m3 in the paired soil gas sample

location (see Table 5-2). The TCE IA concentration is about one-third of the level found in the

SSSG. One would expect significantly more attenuation from the SSSG and a lower IA level

based on the SSSG level that was observed if the TCE source was from the subslab. The

empirical data suggest that the TCE in IA is indicative of an indoor source and not the VI

pathway.

Further, the TCE result from September 2014 from the other IA sample location was non-detect.

TCE was also non-detect in the January 2015 sample results. There were no other VOC

concentrations detected in indoor air samples above the site-specific or NJDEP VIG screening

levels. The complete indoor air sampling results for the current investigation are shown on Table

5-6 and on Figure 5-1.

TCE was not detected in the AA samples collected in September 2014 and January 2015 (see

Table 5-6). There were no significant concentrations of other contaminants observed in the AA

samples collected in September 2014 and January 2015 (see Table 5-6).


While there was a TCE exceedance in one September 2014 IA sample, the IA level was likely

the result of an IA source and not from the VI pathway. Thus, the subslab and indoor air

analytical results from September 2014 and January 2015 sampling events continue to indicate

that the VI pathway has been successfully mitigated.




5-6

February 2016


VOCs have not been migrating into the indoor air at concentrations of concern. This is due to the

effectiveness of the subslab mitigation system. Semi-annual monitoring of the remedial system

has proven that the system is operating properly. USACE recommends continuing semi-annual

monitoring for another year at which time the data will be evaluated to determine the need for

further sampling, frequency of sampling, and operation of the mitigation system. USACE

submitted an optimization study of the mitigation system in May 2015 to determine the proper

flow-rate and operation of the mitigation system and need for future sampling (see Appendix E).

Results of the optimization study indicate that the mass flux available to enter Building 10 does

not appear to be sufficient to pose a risk to occupants in a long-term average condition (see

Appendix E). Therefore, a reduction in the SSD system operation is appropriate. There is a

potential for fluctuations in the building pressure over time that could potentially result in

intermittent short-term TCE concentrations of concern. Therefore, ongoing operation at a

reduced level is prudent. SSD-2 is the vent-pipe with the highest mass flux so it would be

appropriate to focus future SSD operation efforts there. It is recommended that the current SSD

system be modified to operate with only extraction point SSD-2. A flow of 10 standard cubic

feet per minute (scfm) is sufficient to capture enough mass to maintain SSD concentrations of

TCE below the site-specific soil gas screening level and indoor concentrations below the site-

specific indoor air screening level.

It is recommended that the system modifications be completed at least 30-days prior to a planned

semi-annual indoor air and sub-slab sampling event. Results of this sampling event will be

compared to the projected indoor air concentrations based on the mass flux evaluation to assess

the performance of the modified SSD system. Thereafter, replacement of the existing SSD-2 fan

with a less powerful and more energy efficient unit would be considered.

NJDEP provided comments on the Building 10 optimization study on 14 July 2015 (see

Appendix E). NJDEP indicated that the proposed modification to the SSD system is acceptable

and provided recommendations regarding the next steps in the system optimization process.




5-7

February 2016

5.3 EPA BUILDING 18

EPA Building 18 is located near the border of soil Investigation Area 18E. Building 18 is a two-

story brick building built on a concrete slab on grade and is located within the Groundwater

AOC 8A/B plume. The building consists of office space and is surrounded by a parking lot with

a small landscaped lawn area.

Fourteen sampling events were conducted at EPA Building 18 from February 2006 through

September 2011. After the September 2011 sampling event, the building was vacated and the

utilities were turned off during the winter of 2012. USACE and NJDEP agreed to halt sampling

as a result. Although no definitive plans exist, EPA reported that Building 18 could be re-

occupied in the future. As such, USACE collected samples from EPA Building 18 in September

2014 and January 2015.


During Area 18E investigations, TCE concentrations were detected in both soil and groundwater

exceeding their respective NJDEP criteria at locations within 100 ft of the building. Subslab soil

gas samples have been collected at Building 18 since December 2004 by the EPA and USACE.

TCE, PCE, and benzene concentrations have been detected in soil gas or indoor air exceeding the

nonresidential NJDEP VIG screening levels. The data suggested a complete VI pathway existed

at Building 18. The EPA decided to install a subslab mitigation system in 2005. USACE re-

sampled both SSSG and IA to confirm prior EPA results in January 2006. The results of this

investigation did not support the presence of a VI pathway as no VOCs were detected in either

media exceeding the NJDEP VIG screening levels. However, sampling events continued with

events from June 2006 to February 2011. PCE has only once been detected in indoor air samples

greater than nonresidential NJDEP VIG screening levels However, TCE and PCE were detected

in the subslab soil gas above the NJDEP VIG screening levels during various sampling events.

The March 2009 analytical results for Building 18 showed TCE and benzene concentrations

detected in one SSSG sample exceeding the current regulatory screening levels. Benzene, PCE,

and TCE concentrations in indoor air did not exceed regulatory screening levels for any samples;




5-8

February 2016

however, methylene chloride was detected at two locations (018-04 and 018-05) above

regulatory screening levels. Since methylene chloride concentrations were not detected in

groundwater or in any subslab soil gas samples, it was assumed to be related to non-DOD

activities and is also a common laboratory contaminant.

During both September 2010 and February 2011 sampling events, TCE concentrations in SSSG

exceeded regulatory limits at sampling location 018-05. However, IA and AA sample results for

Building 18 did not detect any VOC concentrations above NJDEP VIG screening levels for

either sampling event.

During the September 2011 sampling event, there were no VOC concentrations detected in the

SSSG or IA exceeding the nonresidential screening levels.


During September 2014 and January 2015, two SSSG locations and three IA locations were

sampled from the same locations as those sampled during past sampling events at Building 18

(see Figure 5-2). The most recent sample results were compared with the NJDEP nonresidential

screening levels or the nonresidential site-specific screening levels (when available).





Two samples were also collected from the SSD system vent pipes located outside of the building.

These samples were intended to supplement the existing subslab sample locations and represent

subslab conditions as the SSD system has not been running for close to three years at the time of

the sampling. The vent pipes were capped and purged prior to sample collection. During the

September 2014 sample event, the sample tubing was inserted into the vent pipe in an attempt to

get as close to beneath the slab as possible. This technique could not be followed during the

January 2015 sampling as cold temperatures precluded the sample tubing from being inserted to




5-9

February 2016

the desired length without it crimping and impinging flow to the flow regulator. For the January

2015 samples, the sample tubing was attached to barbed sampling ports on the vent pipe.






TCE was detected in all of the SSSG samples and exceeded its nonresidential site-specific soil

gas screening levels in September 2014 at three of four sample locations. There were no TCE

exceedances in the January 2015 samples. There were no other VOCs detected above the

nonresidential screening levels that were sampled during the September 2014 and January 2015

sampling events at Building 18. The SSD system was not operating at the time of the sampling

events.

A summary of the analytical data is provided on Table 5-3. The TCE and PCE analytical subslab

soil gas results from September 2014 and January 2015 are shown on Figure 5-2.


TCE was not detected in any of the IA samples collected in September 2014 or January 2015.

There were no other VOC concentrations detected in indoor air samples above the site-specific

or NJDEP VIG screening levels. The complete indoor air sampling results for the current

investigation are shown on Table 5-7 and on Figure 5-2.







5-10

February 2016


The subslab and indoor air analytical results from the September 2014 and January 2015

sampling events indicate there is not a complete VI exposure pathway for TCE, the site COPC.

Note that the SSD system for Building 18 was not running during the time of the sampling.


TCE was not detected in the indoor air and other contaminants have not been migrating into the

indoor air at concentrations of concern. USACE will consult with EPA to determine the future

use plans for Building 18. If it is determined that Building 18 is planned to be used, semi-annual

monitoring will be performed for another year at which time the data will be evaluated to

determine the need for further sampling.

5.4 EPA BUILDING 200

EPA Building 200 is a single-story brick building built on a concrete slab on grade located

within the Groundwater AOC 8A/B plume. The building consists of office space and is

surrounded by a parking lot with a small landscaped lawn area. The building is currently used as

a medical facility (nurse’s station).

Twenty-four rounds of subslab soil gas sampling were conducted at EPA Building 200 from

January 2005 through February 2014, and 24 rounds of indoor air sampling were conducted from

January 2006 through February 2014. Current investigation activities include SSSG and IA

sample collection during September 2014 and January 2015.


TCE concentrations were detected in both soil and groundwater exceeding the NJDEP criteria at

locations within 100 ft of Building 200 during sampling activities at Investigation Area 18E.

Subslab soil gas samples have been collected at Building 200 since December 2004 by EPA and

USACE. TCE, chloroform, and carbon tetrachloride concentrations have been detected in soil

gas or indoor air exceeding the nonresidential NJDEP VIG screening levels in the past. Results

indicated that a complete VI pathway from SSSG to IA existed for Building 200. A subslab




5-11

February 2016

mitigation system was installed by the NJDEP in 2005 and taken over by the USACE in January

2013. Monthly inspections of the system including vacuum and velocity measurements are

conducted to ensure that the system is working properly.

Analytical data from sampling events through February 2011 continued to show sporadic

concentrations of TCE detected above subslab soil gas screening levels (Weston, 2012).

During the September 2011 and February 2012 sampling events, TCE was detected above its

nonresidential site-specific and NJDEP VIG screening levels for subslab soil gas. However, the

indoor air samples in both rounds did not show VOC concentrations exceeding screening levels,

indicating there is not a complete exposure pathway which is likely due to the proper operation

of the subslab mitigation system.

Subslab soil gas concentrations of TCE from the October 2012 and February 2013 sampling

events exceeded its nonresidential screening level. No VOCs exceeded the indoor air screening

levels.

The IA results from February 2014 for TCE were less than the nonresidential screening level that

is reflective of the actual use of Building 200. While the VI pathway could be complete at this

building, the levels are not of concern for the current use of the building.


One SSSG location and two IA locations were sampled during the September 2014 and January

2015 sampling events from the same sample locations as previous sampling events. SSSG and

IA sample locations for EPA Building 200 are shown on Figure 5-3. The most recent sample

results were compared with the NJDEP nonresidential screening levels or the nonresidential site-

specific screening levels (when available).








5-12

February 2016





5.4.2.1 Subslab Soil Gas Sampling Results

During September 2014 and January 2015, TCE concentrations were detected in soil gas above

its nonresidential site-specific screening level. No other VOCs were detected above their

screening levels for subslab soil gas. The complete subslab soil gas results for the current

investigation (September 2014 and January 2015) are shown on Table 5-4 and on Figure 5-3.

The SSD system was operating at the time of the sampling.


TCE was either not detected or was detected at levels that were less than its site-specific

nonresidential screening level in the September 2014 and January 2015 samples. None of the

other VOCs had concentrations detected above the nonresidential site-specific or the NJDEP

VIG screening levels at the indoor air locations. The indoor air analytical results of all

compounds are provided on Table 5-8. The TCE and PCE analytical results for indoor air are

shown on Figure 5-3.





During the September 2014 and January 2015 sampling events, TCE was detected above its

nonresidential site-specific screening levels for subslab soil gas. However, the IA results for TCE

were either not detected or were detected at levels that were less than its nonresidential screening

level. While the VI pathway could be complete at this building, the levels are not of concern for

the current use of the building.




5-13

February 2016


Based on the analytical data from September 2014 and January 2015 which shows that while

there were detections of TCE above its nonresidential site-specific screening levels for subslab

soil gas, the levels of TCE in the indoor air were less than the nonresidential screening level. The

incomplete exposure pathway via subslab soil gas is likely due to the presence of the subslab

mitigation system. It should be noted that there is no vent on this system that would allow VR

samples to be collected. It is recommended that the monitoring continue at the same semi-annual

frequency for the next year. USACE will evaluate the data to determine the optimum flow-rate

and operation of the mitigation system and need for future sampling. This optimization study

was scheduled to be performed in the summer of 2015.

5.5 EPA BUILDING 205

EPA Building 205 is a single-story brick building built on a concrete slab on grade, located

within the Groundwater AOC 8A/B plume. The building is surrounded by a parking lot with a

small landscaped area and contains EPA offices and warehouse space.

Twenty-one rounds of subslab soil gas sampling events were conducted by USACE from

January 2005 through February 2014, and 21 rounds of indoor air sampling were conducted from

January 2006 through February 2014. Current investigation activities include SSSG and IA

sample collection during the September 2014 and January 2015 sampling events.


TCE concentrations were detected in both soil and groundwater exceeding NJDEP criteria

(current at the time) at locations within 100 ft of Building 205 during sampling activities at

Investigation Area 18E. Subslab soil gas samples have been collected at Building 205 since

December 2004 by EPA and January 2005 by USACE. Benzene, carbon tetrachloride,

chloroform, and TCE were detected in subslab soil gas exceeding the EPA Table 2C-SSG

screening benchmarks (EPA, 2002). In addition, TCE concentrations were detected in the indoor

air by EPA, suggesting soil gas as a source of the TCE concentrations detected during the EPA

investigation. The EPA installed a subslab mitigation system in 2005.




5-14

February 2016

USACE collected a subsequent round of subslab soil gas and indoor air samples in January 2006.

The results of this investigation did not suggest the presence of a complete VI pathway as TCE

was detected in subslab soil gas at a concentration exceeding the nonresidential NJDEP VIG

screening levels; but was not detected in indoor air above these levels.

In June 2008, September 2008, and March 2009, PCE and TCE were not detected above the

NJDEP VIG regulatory screening levels. However, the September 2010 and February 2011

results did show the presence of TCE and PCE in the SSSG samples. Building 205 was

undergoing renovations during these sampling events and sampling results could have been

affected by those activities. Methylene chloride was also detected in the subslab soil gas above

NJDEP VIG screening levels during previous investigations and in indoor air at two locations

(205-11 and 205-19). Since methylene chloride was not detected in groundwater, it is assumed to

be related to non-DOD activities and is also a common laboratory contaminant. Continued semi-

annual subslab and indoor air sampling of this building was recommended in IAQ Report #7

(Weston, 2012).

As described in IAQ Report #8 (Weston, 2014b), while TCE and chloroform were detected in

soil gas during both sampling events, neither was detected in the indoor air above NJDEP VIG

screening levels. This is likely due to Building 205 having a subslab mitigation system. The

methylene chloride concentrations in the indoor air analytical results are likely to be from an

indoor source or a laboratory contaminant since it was not detected in subslab soil gas.

Sampling conducted in October 2012 and February 2013 identified subslab soil gas

concentrations of TCE from both sampling events that exceeded its nonresidential screening

level. Chloroform was detected in the subslab soil gas above nonresidential criteria. There were

no groundwater-related VOCs exceeding the indoor air screening levels.

While TCE and chloroform were detected in soil gas during both the September 2013 and

February 2014 sampling events, neither was detected in the indoor air above screening levels.

This is likely due to Building 205 having a subslab mitigation system. The methylene chloride

concentrations in the indoor air are likely due to laboratory contamination or an indoor source




5-15

February 2016

since there is not a complete exposure pathway as it was not detected to any significant degree in

SSSG.


Five SSSG locations and five IA locations were sampled during the September 2014 and January

2015 sampling events from the same sample locations as previous sampling events. The SSD

system was running at the time of the sampling. Subslab soil gas and indoor air sample locations

for EPA Building 205 are shown on Figure 5-4. The most recent sample results were compared

with the NJDEP nonresidential screening levels or the nonresidential site-specific screening

levels (when available).









5.5.2.1 Subslab Soil Gas Sampling Results

The subslab soil gas results for the September 2014 and January 2015 sampling events at

Building 205 are shown on Table 5-5. The sample locations along with the PCE and TCE results

are depicted on Figure 5-4.

During the September 2014 and January 2015 sampling events, the analytical results of subslab

soil gas indicated that TCE was detected at every location but only had one concentration above

its site-specific nonresidential soil gas screening level.

Additionally, chloroform was detected at a concentration above both the nonresidential NJDEP

VIG screening levels at one location in September 2014. There were no other VOC




5-16

February 2016

concentrations detected above NJDEP VIG residential and nonresidential screening levels in the

subslab soil gas samples.


TCE was not detected in any of the samples collected during September 2014 and January 2015.

There were no other VOCs detected in indoor air samples above the site-specific or NJDEP VIG

screening levels. The indoor air sampling results for the current investigation are shown on

Table 5-9 and on Figure 5-4.





While TCE and chloroform were detected in soil gas during both sampling events, neither was

detected in the indoor air above screening levels. This is likely due to Building 205 having a

subslab mitigation system.


Since TCE was not detected in indoor air at any significant levels, it is assumed that the VI

exposure pathway is incomplete and successfully mitigated. It is concluded that the installation

of a subslab mitigation system at Building 205 has successfully addressed the potential for VI.

Continued semi-annual subslab and indoor air sampling of this building is recommended for the

next year. USACE will evaluate the data to determine future sampling needs.

FIGURES

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205-19

205-15

010-04

010-03

205-SG-15

010-SG-04

010-SG-03

010-BG-01

Legendk Am bient Air Sam ple Loc ations!( Ind oor Air Sam ple Loc ations!? Subslab Soil Gas Sam ple Loc ations") Vapor R ec overy Sam ple Loc ationsBuild ing 10

.25 0 25 50 75

Scale in Feet

Building 10


FIGUR E 5-1PCE & TCE R ESULTS FOR SUBSLABSOIL GAS AND INDOOR AIR SAMPLES

BUILDING 10


TABLE KEY


NJDEP Sc reening Levels (µg/m 3) (Marc h 2013)Indoor Air Subslab Soil Gas

010-SG-04Parameter Criteria 10/23/2012 2/26/2013 9/24/2013 2/19/2014 9/10/2014 1/21/2015TETRACHLOROETHENE 2400 1 U 2 3 1 J 6 0.48 JTRICHLOROETHENE 150 15 68 76 24 161 5

010-04Parameter Criteria 10/23/2012 2/26/2013 9/23/2013 2/18/2014 9/10/2014 1/21/2015TETRACHLOROETHENE 47 1 0.27 U 1 U 1 U 1 U 1 UTRICHLOROETHENE 3 0.21 U 0.21 U 0.064 J 0.054 J 0.21 U 0.21 U

010-BG-01 Parameter Criteria 10/23/2012 2/26/2013 9/23/2013 2/18/2014 9/10/2014 1/21/2015TETRACHLOROETHENE 47 0.27 U 0.26 J 1 U 1 U 0.31 J 1 UTRICHLOROETHENE 3 0.21 U 0.21 U 0.11 U 0.11 U 0.21 U 0.21 U

010-SG-03Parameter Criteria 10/23/2012 2/26/2013 9/24/2013 2/19/2014 9/10/2014 1/21/2015TETRACHLOROETHENE 2400 2 0.95 J 3 1 J 4 1TRICHLOROETHENE 150 21 11 24 14 31 17

010-03Parameter Criteria 10/23/2012 2/26/2013 9/23/2013 2/18/2014 9/10/2014 1/21/2015TETRACHLOROETHENE 47 0.3 0.27 U 1 U 1 U 31 1 UTRICHLOROETHENE 3 0.21 U 0.21 U 0.1 J 0.059 J 10 0.21 U

Notes:- "Criteria" in th e d ata boxes are Site-Spec ific Sc reeningLevels for nonresid ential exposure.- R ed bold text – d etec ted c onc entration greater th ansc reening c riteria.- All sam ple results in units of m ic rogram s per cubic m eter (µg/m 3).

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018-06

018-05

018-04

018-SG-06

018-SG-07

018-SG-05

018-SG-04

018-BG-01

Leg endk Am b ient Air Sam ple Location!( Indoor Air Sam ple Locations!? Sub slab Soil Gas Sam ple LocationsBuilding 18

.15 0 15 30 45

Scale in Feet

Building 18


FIGURE 5-2PCE & TCE RESULTS FO R SUBSLABSO IL GAS AND INDO O R AIR SAMPLES

BUILDING 18


TABLE KEY


NJDEP Sc reening Levels (µg /m 3) (Marc h 2013)Indoor Air Subslab Soil Gas

018-04 Parameter Criteria 9/10/2014 1/21/2015TETRACHLOROETHENE 47 0.3 J 1 UTRICHLOROETHENE 3 0.21 U 0.21 U

018-SG-04 Parameter Criteria 9/10/2014 1/21/2015TETRACHLOROETHENE 2400 3 0.22 JTRICHLOROETHENE 150 236 24

018-06 Parameter Criteria 9/10/2014 1/21/2015TETRACHLOROETHENE 47 0.24 J 1 UTRICHLOROETHENE 3 0.21 U 0.21 U

018-SG-05 Parameter Criteria 9/10/2014 1/21/2015TETRACHLOROETHENE 2400 5 J 0.81 JTRICHLOROETHENE 150 1021 140

018-05 Parameter Criteria 9/10/2014 1/21/2015TETRACHLOROETHENE 47 1 U 1 UTRICHLOROETHENE 3 0.21 U 0.21 U

018-SG-06Parameter Criteria 9/10/2014 1/21/2015TETRACHLOROETHENE 2400 0.66 J 1 UTRICHLOROETHENE 150 17 0.44

018-SG-07 Parameter Criteria 9/10/2014 1/21/2015TETRACHLOROETHENE 2400 5 0.95 JTRICHLOROETHENE 150 156 26

018-BG-01 Parameter Criteria 9/10/2014 1/21/2015TETRACHLOROETHENE 47 0.41 J 1 UTRICHLOROETHENE 3 0.21 U 0.21 U

Notes:- "Criteria" in th e data b oxes are Site-Spec ific Sc reeningLevels for nonresidential ex posure.- Red b old tex t – detec ted c onc entration g reater th ansc reening c riteria.- All sam ple results in units of m ic rog ram s per c ub ic m eter (µg /m 3).

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200-02

200-SG-02

200-BG-01

Legendk Am bient Air Sam ple Loc ation!( Ind oor Air Sam ple Loc ations!? S ubslab Soil Gas Sam ple Loc ationsBuild ing 200

.15 0 15 30 45

Scale in Feet

Building 200


FIGURE 5-3P CE & TCE RESULTS FOR SUBSLABSOIL GAS AND INDOOR AIR SAMP LES

BUILDING 200

200-02Parameter Criteria 10/23/2012 2/26/2013 9/23/2013 2/18/2014 9/10/2014 1/21/2015TETRACHLOROETHENE 47 0.36 0.27 U 1 U 1 U 0.2 J 1 UTRICHLOROETHENE 3 0.2 J 0.38 0.18 0.45 0.21 U 0.64

200-SG-02Parameter Criteria 10/23/2012 2/26/2013 9/24/2013 2/19/2014 9/10/2014 1/21/2015TETRACHLOROETHENE 2400 1 1 U 1 U 1 U 3 U 1 UTRICHLOROETHENE 150 275 170 167 140 333 183

200-BG-01Parameter Criteria 10/23/2012 2/26/2013 2/18/2014 9/10/2014 1/21/2015TETRACHLOROETHENE 47 0.44 0.27 U 1 U 1 U 1 UTRICHLOROETHENE 3 0.21 U 0.21 U 0.054 J 0.21 U 0.21 U

200-03Parameter Criteria 10/23/2012 2/26/2013 9/23/2013 2/18/2014 9/10/2014 1/21/2015TETRACHLOROETHENE 47 0.34 0.36 1 U 1 U 0.3 J 1 UTRICHLOROETHENE 3 0.21 U 0.38 0.19 0.54 0.21 U 0.64


TABLE KEY


NJDEP S creening Levels (µg/m 3) (Marc h 2013)Indoor Air Subslab Soil Gas

Notes:- "Criteria" in th e d ata boxes are S ite-Spec ific S creeningLevels for nonresid ential exposure.- Red bold text – d etec ted c onc entration greater th ansc reening criteria.- All sam ple results in units of m ic rogram s per c ubic m eter (µ g/m 3).

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010-04

010-03010-SG-04

010-SG-03

205-19

205-15

205-12

205-11

205-01

205-SG-19

205-SG-15

205-SG-12

205-SG-11

205-SG-01

205-BG-01

Legendk Am bient Air Sam ple Loc ation!( Ind oor Air S am ple Loc ations!? S ubslab Soil Gas Sam ple Loc ationsBuild ing 205

.50 0 50 100 150

Scale in Feet

Building 205


FIGURE 5-4P CE & TCE RESULTS FOR SUBSLABSOIL GAS AND INDOOR AIR SAMP LES

BUILDING 205


TABLE KEY


NJDEP S c reening Levels (µg/m 3) (Marc h 2013)Indoor Air Subslab Soil Gas

205-19Parameter Criteria 10/23/2012 2/26/2013 9/23/2013 2/18/2014 9/10/2014 1/21/2015TETRACHLOROETHENE 47 0.42 0.27 U 1 U 1 U 1 U 1 UTRICHLOROETHENE 3 0.21 U 0.21 U 0.054 J 0.043 J 0.21 U 0.21 U

205-SG-19Parameter Criteria 10/23/2012 2/26/2013 9/24/2013 2/19/2014 9/10/2014 1/21/2015TETRACHLOROETHENE 2400 1 U 1 U 1 U 1 U 1 U 1 UTRICHLOROETHENE 150 0.86 U 3 1 1 1 1

205-SG-15Parameter Criteria 10/23/2012 2/26/2013 9/24/2013 2/19/2014 9/10/2014 1/21/2015TETRACHLOROETHENE 2400 2 2 2 2 2 0.81 JTRICHLOROETHENE 150 32 47 31 41 46 21

205-15Parameter Criteria 10/23/2012 2/26/2013 9/23/2013 2/18/2014 9/10/2014 1/21/2015TETRACHLOROETHENE 47 0.24 J 0.27 U 1 U 1 U 1 U 1 UTRICHLOROETHENE 3 0.21 U 0.21 U 0.054 J 0.043 J 0.21 U 0.32

205-SG-11Parameter Criteria 10/23/2012 2/26/2013 9/24/2013 2/19/2014 9/10/2014 1/21/2015TETRACHLOROETHENE 2400 3 11 J 8 9 2 J 1 UTRICHLOROETHENE 150 51 752 902 929 414 16

205-11Parameter Criteria 10/23/2012 2/26/2013 9/23/2013 2/18/2014 9/10/2014 1/21/2015TETRACHLOROETHENE 47 0.46 0.27 U 1 U 1 U 0.37 J 1 UTRICHLOROETHENE 3 0.21 U 0.21 U 0.081 J 0.07 J 0.21 U 0.21 U

205-SG-12Parameter Criteria 10/23/2012 2/26/2013 9/24/2013 2/19/2014 9/10/2014 1/21/2015TETRACHLOROETHENE 2400 2 1 U 0.91 J 1 U 1 1 UTRICHLOROETHENE 150 15 J 26 82 42 91 38

205-12Parameter Criteria 10/23/2012 2/26/2013 9/23/2013 2/18/2014 9/10/2014 1/21/2015TETRACHLOROETHENE 47 0.54 0.27 U 1 U 1 U 0.34 J 1 UTRICHLOROETHENE 3 0.21 U 0.21 U 0.12 0.097 J 0.21 U 0.21 U

205-SG-01Parameter Criteria 10/23/2012 2/26/2013 9/24/2013 2/19/2014 9/10/2014 1/21/2015TETRACHLOROETHENE 2400 8 3 9 2 10 2TRICHLOROETHENE 150 18 11 10 3 20 3

205-01Parameter Criteria 10/23/2012 2/26/2013 9/23/2013 2/18/2014 9/10/2014 1/21/2015TETRACHLOROETHENE 47 0.31 0.27 U 1 U 1 U 1 U 1 UTRICHLOROETHENE 3 0.21 U 0.21 U 0.043 J 0.11 U 0.21 U 0.21 U

205-BG-01Parameter Criteria 10/23/2012 2/26/2013 9/23/2013 2/18/2014 9/10/2014 1/21/2015TETRACHLOROETHENE 47 0.32 0.34 1 U 1 U 0.35 J 1 UTRICHLOROETHENE 3 0.21 U 0.21 U 0.11 U 0.11 U 0.21 U 0.21 U

Notes:- "Criteria" in th e d ata boxes are S ite-Spec ific S c reeningLevels for nonresid ential exposure.- Red bold text – d etec ted c onc entration greater th ansc reening c riteria.- All sam ple results in units of m ic rogram s per c ubic m eter (µ g/m 3).

Tables

FUDS Project Number CO2NJ0084-02IAQ Report #11_Sect5 Tables_Final PAGE 1 of 17 2/4/2016


Table 2C USEPA Table 1Screening Level NJDEP Groundwater Maximum Most Recentfor Groundwater2 Screening Levels3 Concentration Concentration4

(ug/L) (ug/L) (ug/L) (ug/L)TRICHLOROETHYLENE 5 2 330 MW-156 9/12/2012 185 7/2/20131,1-DICHLOROETHENE 190 260 0.47 J MW-156 9/18/2009 ND 7/2/2013BROMODICHLOROMETHANE 2 2 0.21 J MW-154 9/18/2009 0.21 J 9/18/2009CARBON DISULFIDE 560 1,500 1.6 J MW-134 7/2/2013 1.6 J 7/2/2013CHLOROFORM 80 70 7.4 MW-154 9/18/2009 7.4 9/18/2009CIS-1,2-DICHLOROETHENE 210 NA 9.2 MW-153 9/12/2012 2.5 7/2/2013DICHLORODIFLUOROMETHANE 3.2 1,000 0.22 J MW-136 5/22/2012 ND 7/2/2013METHYLENE CHLORIDE 58 53 0.56 J MW-156 9/18/2009 ND 7/2/2013MTBE 120,000 580 2.6 MW-155 9/18/2009 2.6 9/18/2009TETRACHLOROETHYLENE 5 31 4.8 MW-138 4/1/2005 4.8 4/1/2005TRANS-1,2-DICHLOROETHENE 180 520 0.79 J MW-153 9/12/2012 ND 7/2/2013VINYL CHLORIDE 2 1 0.93 J MW-106A 9/12/2012 0.76 J 7/2/2013

NOTES:

ug/L - micrograms per liter 2 From EPA's November 2002 "Draft Guidance for Evaluating the Vapor Intrusion to J - Estimated Value Indoor Air Pathway from Groundwater and Soils". NA - Not Available3 NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor ND - Not Detected Intrusion Guidance" document issued by NJDEP dated March 2013 Bolded and Shaded - Exceedance of NJDEP Table 1 Screening Level4 Most recent concentration at location where maximum concentration was detected.

Table 5-1Contaminants of Potential Concern1 - GROUNDWATER AOC 8A/B

Comparison of Maximum Groundwater Concentrations by ConstituentUsing NJDEP's Subsurface Vapor Intrusion Guidance

1 COPCs are any chemicals detected in monitoring wells within 100 feet of defined plume boundary from 2005 to 2013 (most recent available data).

ConstituentSample Location Sample Date Sample Date



EPA Building 10: Groundwater AOC 8A/BIndoor Air Quality Report #11



Location ID:Sample ID: 21-010-SG-03 22-010-SG-03 21-010-SG-04 22-010-SG-04

Sample Type: Sample Sample Sample SampleLab Sample ID: 200-24117-19 200-26412-5 200-24117-20 200-26412-6

Date: 9/10/2014 1/21/2015 9/10/2014 1/21/2015Units: (ug/m3) (ug/m3) (ug/m3) (ug/m3)

Compound1

AOC 8 - COPCsTrichloroethene 150 4 31 17 160 4.6AOC 8 - Other Compounds1,1,1-Trichloroethane 1100000 1.1 U 1.4 U 1.1 U 1.1 U1,1,2,2-Tetrachloroethane 34 1.4 U 1.4 U 1.4 U 1.4 U1,1,2-Trichloroethane 38 1.1 U 1.1 U 1.1 U 1.1 U1,1-Dichloroethane 380 0.81 U 0.81 U 0.81 U 0.81 U1,1-Dichloroethene 44000 0.79 U 0.79 U 0.79 U 0.79 U1,2,4-Trichlorobenzene 440 3.7 U 3.7 U 3.7 U 0.66 J1,2,4-Trimethylbenzene NLE 0.98 U 0.98 U 0.68 J 0.27 J1,2-Dibromoethane 38 1.5 U 1.5 U 1.5 U 1.5 U1,2-Dichlorobenzene 44000 1.2 U 1.2 U 1.2 U 1.2 U1,2-Dichloroethane 24 0.81 U 0.81 U 0.81 U 0.81 U1,2-Dichloropropane 61 0.92 U 0.92 U 0.92 U 0.92 U1,2-Dichlorotetrafluoroethane NLE 1.4 U 1.4 U 1.4 U 1.4 U1,3,5-Trimethylbenzene NLE 0.98 U 0.98 U 0.6 J 0.98 U1,3-Butadiene 20 0.44 U 0.44 U 0.44 U 0.44 U1,3-Dichlorobenzene NLE 1.2 U 1.2 U 1.2 U 1.2 U1,4-Dichlorobenzene 56 2.3 1.2 J 0.33 J 1.2 U1,4-Dioxane NLE 18 U 18 U 18 U 18 U2,2,4-Trimethylpentane NLE 0.46 J 0.93 U 0.54 J 0.61 J2-Chlorotoluene 5100 1 U 1 U 1 U 1 UAllyl chloride 100 1.6 U 1.6 U 1.6 U 1.6 U4-Ethyltoluene NLE 0.98 U 0.98 U 0.98 U 0.98 UAcetone 6800000 6.9 J 12 U 12 8.1 JBenzene 79 0.24 J 0.27 J 1.1 0.97Benzyl chloride NLE 1 U 1 U 1 U 1 UBromodichloromethane 34 1.3 U 1.3 U 1.3 U 1.3 UBromoethene 22 0.87 U 0.87 U 0.87 U 0.87 UBromoform 560 2.1 U 2.1 U 2.1 U 2.1 UBromomethane 1100 0.78 U 0.78 U 0.78 U 0.78 UCarbon disulfide 150000 0.63 J 1.6 U 0.33 J 1.6 UCarbon tetrachloride 100 0.56 J 0.57 J 1 J 0.51 JChlorobenzene 11000 0.92 U 0.92 U 0.92 U 0.92 UChloroethane 2200000 1.3 U 1.3 U 1.3 U 1.3 UChloroform 27 0.92 J 0.98 U 0.76 J 0.98 UChloromethane 20000 0.43 J 1 U 0.98 J 1cis-1,2-Dichloroethene NLE 0.79 U 0.79 U 0.79 U 0.79 Ucis-1,3-Dichloropropene NLE 0.91 U 0.91 U 0.91 U 0.91 UCyclohexane 1300000 0.57 J 0.69 U 1.3 0.69 UDibromochloromethane 43 1.7 U 1.7 U 1.7 U 1.7 UDichlorodifluoromethane 22000 3.2 2.6 3.8 2.5Ethanol NLE 1.2 J 2.9 J 4 J 92Ethyl acetate NLE 18 U 18 U 18 U 18 UEthylbenzene 250 0.1 J 0.87 U 0.47 J 0.41 JFreon TF 6600000 0.55 J 0.72 J 0.75 J 1.5 UHexachlorobutadiene 53 2.1 U 2.1 U 2.1 U 2.1 UIsopropyl alcohol NLE 12 U 12 U 0.86 J 8.6 Jm,p-Xylene NLE 2.2 U 2.2 U 1.4 J 1.2 J2-Hexanone NLE 2 U 2 U 2 U 2 U2-Butanone 1100000 1.5 U 1.5 U 2.5 1.5 U4-Methyl-2-Pentanone 660000 2 U 2 U 2 U 2 UMethyl methacrylate NLE 2 U 2 U 2 U 2 UMethyl tert-butyl ether 2400 0.72 U 0.72 U 0.72 U 0.72 UMethylene Chloride 61000 1.3 J 1.7 U 1.6 J 1.3 Jn-Heptane NLE 0.82 U 0.82 U 0.68 J 0.71 Jn-Hexane 150000 0.89 0.59 J 1.3 1o-Xylene NLE 0.87 U 0.87 U 0.62 J 0.49 JPropylene NLE 8.6 U 8.6 U 8.6 U 8.6 UStyrene 220000 0.85 U 0.85 U 0.85 U 0.19 Jtert-Butyl alcohol NLE 15 U 15 U 3.1 J 15 UTetrachloroethene 2400 4 4.3 1.4 5.5 0.48 JTetrahydrofuran NLE 15 U 15 U 15 U 15 UToluene 1100000 2.7 1 25 2.6Total Xylenes 22000 0.87 U 0.87 U 2 1.7trans-1,2-Dichloroethene 13000 0.79 U 0.79 U 0.79 U 0.79 Utrans-1,3-Dichloropropene NLE 0.91 U 0.91 U 0.91 U 0.91 UTrichlorofluoromethane 150000 1.7 1.4 2.2 1.2Vinyl acetate NLE 18 U 18 U 18 U 18 UVinyl chloride 140 4 0.1 U 0.1 U 0.1 U 0.1 U


1The compound list for this table includes the compounds analyzed under the TO-15 analysis.2NJDEP Soil Gas Screening Levels as are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP updated March 2013.3Table 1 is the regulatory screening level used for comparison of the analytical results. 4Site Specific Criteria based on nonresidential use (see Table 2-9).

010-SG-03 010-SG-04


NJDEP VIGNonresidential







Location ID:Sample ID: 15-018-SG-04 16-018-SG-04 15-018-SG-05 03-DUP-SG-05 16-018-SG-05 03-DUP-SG-05 01-018-SG-06 02-018-SG-06 01-018-SG-07 02-018-SG-07

Sample Type: Sample Sample Sample Duplicate Sample Duplicate Sample Sample Sample SampleLab Sample ID: 200-24117-10 200-26412-29 200-24117-11 200-24117-12 200-26412-30 200-26412-31 200-24117-13 200-26412-32 200-24117-14 200-26412-33

Date: 9/10/2014 1/21/2015 9/10/2014 9/10/2014 1/21/2015 1/21/2015 9/10/2014 1/21/2015 9/10/2014 1/21/2015Units: (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3)

Compound1

AOC 8 - COPCsTrichloroethene 150 4 240 24 1000 1000 140 140 16 0.43 160 26AOC 8 - Other Compounds1,1,1-Trichloroethane 1100000 0.5 J 1.1 U 7 U 7 U 1.1 U 1.1 U 1.1 U 1.1 U 0.24 J 1.1 U1,1,2,2-Tetrachloroethane 34 1.7 U 1.4 U 8.9 U 8.9 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U1,1,2-Trichloroethane 38 1.4 U 1.1 U 7 U 7 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U1,1-Dichloroethane 380 1 U 0.81 U 5.2 U 5.2 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U1,1-Dichloroethene 44000 0.99 U 0.79 U 5.1 U 5.1 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U1,2,4-Trichlorobenzene 440 4.6 U 3.7 U 24 U 24 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U1,2,4-Trimethylbenzene NLE 1.2 U 0.98 U 0.94 J 6.3 U 0.98 U 0.98 U 0.39 J 0.7 J 0.26 J 0.31 J1,2-Dibromoethane 38 1.9 U 1.5 U 9.9 U 9.9 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U1,2-Dichlorobenzene 44000 1.5 U 1.2 U 7.8 U 7.8 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U1,2-Dichloroethane 24 1 U 0.81 U 5.2 U 5.2 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U1,2-Dichloropropane 61 1.2 U 0.92 U 6 U 6 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U1,2-Dichlorotetrafluoroethane NLE 1.7 U 1.4 U 9 U 9 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U1,3,5-Trimethylbenzene NLE 1.2 U 0.98 U 6.3 U 6.3 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U1,3-Butadiene 20 0.55 U 0.44 U 2.9 U 2.9 U 0.44 U 0.44 U 0.44 U 0.44 U 0.44 U 0.44 U1,3-Dichlorobenzene NLE 1.5 U 1.2 U 7.8 U 7.8 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U1,4-Dichlorobenzene 56 1.5 U 1.2 U 7.8 U 7.8 U 1.2 U 1.2 U 0.14 J 1.2 U 1.2 U 1.2 U1,4-Dioxane NLE 23 U 0.77 J 120 U 120 U 18 U 18 U 18 U 18 U 18 U 18 U2,2,4-Trimethylpentane NLE 1.2 U 0.93 U 6 U 6 U 0.93 U 0.93 U 0.33 J 0.93 U 0.93 U 0.93 U2-Chlorotoluene 5100 1.3 U 1 U 6.7 U 6.7 U 1 U 1 U 1 U 1 U 1 U 1 UAllyl chloride 100 2 U 1.6 U 10 U 10 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U4-Ethyltoluene NLE 1.2 U 0.98 U 6.3 U 6.3 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 UAcetone 6800000 12 J 12 U 170 77 U 12 U 12 U 12 U 10 J 8.4 J 6.2 JBenzene 79 0.31 J 0.64 U 0.89 J 4.1 U 0.64 U 0.64 U 0.4 J 3.6 0.15 J 0.32 JBenzyl chloride NLE 1.3 U 1 U 6.7 U 6.7 U 1 U 1 U 1 U 1 U 1 U 1 UBromodichloromethane 34 1.7 U 1.3 U 8.6 U 8.6 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 UBromoethene 22 1.1 U 0.87 U 5.6 U 5.6 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 UBromoform 560 2.6 U 2.1 U 13 U 13 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 UBromomethane 1100 0.97 U 0.78 U 5 U 5 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 UCarbon disulfide 150000 0.5 J 1.6 U 49 10 U 1.6 U 1.6 U 3.8 1.6 U 19 1.6 UCarbon tetrachloride 100 2.3 0.48 J 2.7 J 2.9 J 0.55 J 0.69 J 0.68 J 0.47 J 1.6 0.44 JChlorobenzene 11000 1.2 U 0.92 U 5.9 U 5.9 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 UChloroethane 2200000 1.6 U 1.3 U 8.5 U 8.5 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 UChloroform 27 2.7 0.98 U 4.1 J 4 J 0.78 J 0.98 U 1 0.98 U 2.6 0.79 JChloromethane 20000 0.38 J 1 U 6.7 U 6.7 U 1 U 1 U 0.71 J 1 U 0.3 J 1 Ucis-1,2-Dichloroethene NLE 0.99 U 0.79 U 5.1 U 5.1 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 Ucis-1,3-Dichloropropene NLE 1.1 U 0.91 U 5.9 U 5.9 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 UCyclohexane 1300000 0.36 J 0.48 J 4.4 U 4.4 U 0.69 U 0.69 U 0.35 J 0.69 U 0.69 U 0.69 UDibromochloromethane 43 2.1 U 1.7 U 11 U 11 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 UDichlorodifluoromethane 22000 3.6 2.4 J 3.3 J 3.7 J 2.6 2.4 J 3.8 2.3 J 3.6 2.4 JEthanol NLE 3 J 16 25 J 61 U 9.4 U 9.4 U 5.5 J 26 9.7 18Ethyl acetate NLE 23 U 18 U 120 U 120 U 18 U 18 U 18 U 18 U 18 U 18 UEthylbenzene 250 1.1 U 0.87 U 2.4 J 5.6 U 0.87 U 0.87 U 0.24 J 0.87 U 0.68 J 0.87 UFreon TF 6600000 0.56 J 1.5 U 9.9 U 9.9 U 1.5 U 1.5 U 0.64 J 1.5 U 0.55 J 1.5 UHexachlorobutadiene 53 2.7 U 2.1 U 14 U 14 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 UIsopropyl alcohol NLE 0.8 J 12 U 81 79 U 12 U 12 U 12 U 19 2.6 J 8.8 Jm,p-Xylene NLE 2.7 U 2.2 U 4.7 J 14 U 2.2 U 2.2 U 0.72 J 2.2 U 1.4 J 2.2 U




018-SG-06 018-SG-07018-SG-04 018-SG-05





Location ID:Sample ID: 15-018-SG-04 16-018-SG-04 15-018-SG-05 03-DUP-SG-05 16-018-SG-05 03-DUP-SG-05 01-018-SG-06 02-018-SG-06 01-018-SG-07 02-018-SG-07

Sample Type: Sample Sample Sample Duplicate Sample Duplicate Sample Sample Sample SampleLab Sample ID: 200-24117-10 200-26412-29 200-24117-11 200-24117-12 200-26412-30 200-26412-31 200-24117-13 200-26412-32 200-24117-14 200-26412-33

Date: 9/10/2014 1/21/2015 9/10/2014 9/10/2014 1/21/2015 1/21/2015 9/10/2014 1/21/2015 9/10/2014 1/21/2015Units: (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3)

Compound1




018-SG-06 018-SG-07018-SG-04 018-SG-05

2-Hexanone NLE 2.6 U 2 U 7.7 J 13 U 2 U 2 U 2 U 2 U 2 U 2 U2-Butanone 1100000 2.5 1.5 U 480 9.5 U 1.5 U 1.5 U 1.5 U 1.9 5.5 1.5 U4-Methyl-2-Pentanone 660000 2.6 U 2 U 32 13 U 2 U 2 U 2 U 2 U 0.4 J 2 UMethyl methacrylate NLE 2.6 U 2 U 13 U 13 U 2 U 2 U 2 U 2 U 2 U 2 UMethyl tert-butyl ether 2400 0.9 U 0.72 U 4.7 U 4.7 U 0.72 U 0.72 U 0.72 U 0.72 U 0.72 U 0.72 UMethylene Chloride 61000 0.57 J 1.2 J 11 U 11 U 1.7 U 1.7 U 0.91 J 1.7 U 0.5 J 1.7 Un-Heptane NLE 1 U 0.82 U 5.3 U 5.3 U 0.82 U 0.82 U 0.82 U 0.82 U 0.82 U 0.82 Un-Hexane 150000 0.88 U 0.7 U 4.5 U 4.5 U 0.7 U 0.7 U 0.57 J 0.7 U 0.7 U 0.7 UPropylene NLE 11 U 8.6 U 56 U 56 U 8.6 U 8.6 U 8.6 U 8.6 U 8.6 U 8.6 UStyrene 220000 1.1 U 0.85 U 5.5 U 5.5 U 0.85 U 0.85 U 0.17 J 0.85 U 0.075 J 0.85 Utert-Butyl alcohol NLE 1.7 J 15 U 98 U 98 U 15 U 15 U 15 U 15 U 1.1 J 15 UTetrachloroethene 2400 4 2.7 0.23 J 4.8 J 4.6 J 0.79 J 0.79 J 0.67 J 1.4 U 4.7 0.92 JTetrahydrofuran NLE 18 U 15 U 38 J 95 U 15 U 15 U 3.8 J 1.3 J 4 J 15 UToluene 1100000 0.55 J 0.14 J 6.8 4.9 U 0.75 U 0.75 U 2.2 0.58 J 1.8 0.75 Utrans-1,2-Dichloroethene 13000 0.99 U 0.79 U 5.1 U 5.1 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 Utrans-1,3-Dichloropropene NLE 1.1 U 0.91 U 5.9 U 5.9 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 UTrichlorofluoromethane 150000 2.8 1.4 2.6 J 2.7 J 1.4 1.4 2.6 1.4 2.4 1.3Vinyl acetate NLE 22 U 18 U 110 U 110 U 18 U 18 U 18 U 18 U 18 U 18 UVinyl chloride 140 4 0.13 U 0.1 U 0.66 U 0.66 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 UTotal Xylenes 22000 1.1 U 0.87 U 5.9 5.6 U 0.87 U 0.87 U 0.96 0.87 U 1.9 0.87 Uo-Xylene NLE 1.1 U 0.87 U 1.1 J 5.6 U 0.87 U 0.87 U 0.27 J 0.87 U 0.44 J 0.87 U








Location ID:Sample ID: 25-200-SG-02 26-200-SG-02

Sample Type: Sample SampleLab Sample ID: 200-24117-5 200-26412-11

Date: 9/10/2014 1/21/2015Units: (ug/m3) (ug/m3)

Compound1

AOC 8 - COPCsTrichloroethene 150 4 330 180AOC 8 - Other Compounds1,1,1-Trichloroethane 1100000 2.2 U 1.1 U1,1,2,2-Tetrachloroethane 34 2.7 U 1.4 U1,1,2-Trichloroethane 38 2.2 U 1.1 U1,1-Dichloroethane 380 1.6 U 0.81 U1,1-Dichloroethene 44000 1.6 U 0.79 U1,2,4-Trichlorobenzene 440 7.4 U 3.7 U1,2,4-Trimethylbenzene NLE 2 U 0.98 U1,2-Dibromoethane 38 3.1 U 1.5 U1,2-Dichlorobenzene 44000 2.4 U 1.2 U1,2-Dichloroethane 24 1.6 U 0.81 U1,2-Dichloropropane 61 1.8 U 0.92 U1,2-Dichlorotetrafluoroethane NLE 2.8 U 1.4 U1,3,5-Trimethylbenzene NLE 2 U 0.98 U1,3-Butadiene 20 0.88 U 0.44 U1,3-Dichlorobenzene NLE 2.4 U 1.2 U1,4-Dichlorobenzene 56 2.4 U 1.2 U1,4-Dioxane NLE 36 U 18 U2,2,4-Trimethylpentane NLE 1.9 U 0.93 U2-Butanone 1100000 4.4 1.5 U2-Chlorotoluene 5100 2.1 U 1 U2-Hexanone NLE 4.1 U 2 U4-Ethyltoluene NLE 2 U 0.98 U4-Methyl-2-Pentanone 660000 0.67 J 2 UAcetone 6800000 20 J 6.9 JAllyl chloride 100 3.1 U 1.6 UBenzene 79 0.24 J 0.21 JBenzyl chloride NLE 2.1 U 1 UBromodichloromethane 34 2.7 U 1.3 UBromoethene 22 1.7 U 0.87 UBromoform 560 4.1 U 2.1 UBromomethane 1100 1.6 U 0.78 UCarbon disulfide 150000 3.2 1.6 UCarbon tetrachloride 100 0.47 J 0.44 JChlorobenzene 11000 1.8 U 0.92 UChloroethane 2200000 2.6 U 1.3 UChloroform 27 0.53 J 0.98 UChloromethane 20000 0.88 J 1 Ucis-1,2-Dichloroethene NLE 1.5 J 0.97cis-1,3-Dichloropropene NLE 1.8 U 0.91 UCyclohexane 1300000 0.37 J 0.69 UDibromochloromethane 43 3.4 U 1.7 UDichlorodifluoromethane 22000 3.9 J 2.4 JEthanol NLE 4.2 J 9.2 JEthyl acetate NLE 36 U 18 UEthylbenzene 250 1.7 U 0.87 UFreon TF 6600000 3.1 U 0.9 JHexachlorobutadiene 53 4.3 U 2.1 UIsopropyl alcohol NLE 5.8 J 3.5 Jm,p-Xylene NLE 4.3 U 2.2 UMethyl methacrylate NLE 4.1 U 2 UMethyl tert-butyl ether 2400 1.4 U 0.72 UMethylene Chloride 61000 0.87 J 1.7 Un-Heptane NLE 1.6 U 0.82 Un-Hexane 150000 1.4 U 0.7 Uo-Xylene NLE 1.7 U 0.87 UPropylene NLE 17 U 8.6 UStyrene 220000 1.7 U 0.85 Utert-Butyl alcohol NLE 2.9 J 15 UTetrachloroethene 2400 4 2.7 U 1.4 UTetrahydrofuran NLE 29 U 15 UToluene 1100000 0.23 J 0.75 UTotal Xylenes 22000 1.7 U 0.87 Utrans-1,2-Dichloroethene 13000 1.6 U 0.79 Utrans-1,3-Dichloropropene NLE 1.8 U 0.91 UTrichlorofluoromethane 150000 2.5 1.4Vinyl acetate NLE 35 U 18 UVinyl chloride 140 4 0.2 U 0.1 U




3Table 1 is the regulatory screening level used for comparison of the analytical results. 4Site Specific Criteria based on nonresidential use (see Table 2-9).


200-SG-02








Location ID:Sample ID: 22-205-SG-01 23-205-SG-01 22-205-SG-11 23-205-SG-11 22-205-SG-12 01-DUP-SG-03 23-205-SG-12 22-205-SG-15 23-205-SG-15 22-205-SG-19 23-205-SG-19 01-DUP-SG-03

Sample Type: Sample Sample Sample Sample Sample Duplicate Sample Sample Sample Sample Sample DuplicateLab Sample ID: 200-24117-28 200-26412-19 200-24117-29 200-26412-20 200-24117-30 200-24117-31 200-26412-21 200-24117-32 200-26412-22 200-24117-33 200-26412-23 200-26412-24

Date: 9/10/2014 1/21/2015 9/10/2014 1/21/2015 9/10/2014 9/10/2014 1/21/2015 9/10/2014 1/21/2015 9/10/2014 1/21/2015 1/21/2015Units: (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3)

Compound1

AOC 8 - COPCsTrichloroethene 150 4 21 2.7 420 15 89 84 38 46 21 1.1 1.3 1.2AOC 8 - Other Compounds1,1,1-Trichloroethane 1100000 1.1 U 1.1 U 2.7 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U1,1,2,2-Tetrachloroethane 34 1.4 U 1.4 U 3.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U1,1,2-Trichloroethane 38 1.1 U 1.1 U 2.7 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U1,1-Dichloroethane 380 0.81 U 0.81 U 2 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U1,1-Dichloroethene 44000 0.79 U 0.79 U 2 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U1,2,4-Trichlorobenzene 440 3.7 U 3.7 U 9.3 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U1,2,4-Trimethylbenzene NLE 0.37 J 0.98 U 0.29 J 0.43 J 0.98 U 0.98 U 0.38 J 0.31 J 0.23 J 1.2 0.35 J 0.2 J1,2-Dibromoethane 38 1.5 U 1.5 U 3.8 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U1,2-Dichlorobenzene 44000 1.2 U 1.2 U 3 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U1,2-Dichloroethane 24 0.81 U 0.81 U 2 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U1,2-Dichloropropane 61 0.92 U 0.92 U 2.3 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U1,2-Dichlorotetrafluoroethane NLE 1.4 U 1.4 U 3.5 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U1,3,5-Trimethylbenzene NLE 0.98 U 0.98 U 2.5 U 0.98 U 0.98 U 0.98 U 0.32 J 0.11 J 0.98 U 0.46 J 0.98 U 0.98 U1,3-Butadiene 20 0.44 U 0.44 U 1.1 U 0.44 U 0.44 U 0.44 U 0.44 U 0.44 U 0.44 U 0.44 U 0.21 J 0.44 U1,3-Dichlorobenzene NLE 1.2 U 1.2 U 3 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U1,4-Dichlorobenzene 56 0.29 J 1.2 U 3 U 1.2 U 1.2 U 1.2 U 1.2 U 0.14 J 1.2 U 0.14 J 1.2 U 1.2 U1,4-Dioxane NLE 18 U 18 U 45 U 18 U 18 U 18 U 18 U 6.4 J 18 U 2.6 J 3.3 J 18 U2,2,4-Trimethylpentane NLE 0.93 U 0.93 U 2.3 U 0.93 U 0.93 U 0.93 U 2.7 0.93 U 0.93 U 0.63 J 0.93 U 0.93 U2-Chlorotoluene 5100 1 U 1 U 2.6 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 UAllyl chloride 100 1.6 U 1.6 U 3.9 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U4-Ethyltoluene NLE 0.98 U 0.98 U 2.5 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.29 J 0.98 U 0.98 UAcetone 6800000 16 12 U 24 J 14 13 5.4 J 11 J 23 12 U 73 36 9 JBenzene 79 0.64 U 0.64 U 1.6 U 0.79 0.64 U 0.061 J 0.88 0.4 J 0.52 J 1.3 0.9 0.73Benzyl chloride NLE 1 U 1 U 2.6 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 UBromodichloromethane 34 1.3 U 1.3 U 3.4 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 UBromoethene 22 0.87 U 0.87 U 2.2 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 UBromoform 560 2.1 U 2.1 U 5.2 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 UBromomethane 1100 0.78 U 0.78 U 1.9 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 UCarbon disulfide 150000 3.9 1.6 U 3.9 U 1.6 U 7.2 1.6 U 1.6 U 1.3 J 1.3 J 9.5 0.9 J 1.6 UCarbon tetrachloride 100 14 2.2 3.4 0.62 J 0.69 J 0.64 J 0.52 J 0.56 J 0.53 J 0.55 J 0.45 J 0.53 JChlorobenzene 11000 0.41 J 0.92 U 2.3 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 UChloroethane 2200000 1.3 U 1.3 U 3.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 UChloroform 27 10 1.4 160 11 2.3 2.3 0.98 U 4.5 1.2 0.2 J 0.98 U 0.98 UChloromethane 20000 0.57 J 1 U 2.6 U 1 U 1 U 0.31 J 1 U 0.91 J 1 U 1.3 1.3 1 Ucis-1,2-Dichloroethene NLE 0.79 U 0.79 U 2 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 Ucis-1,3-Dichloropropene NLE 0.91 U 0.91 U 2.3 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 UCyclohexane 1300000 0.69 U 0.69 U 1.7 U 0.69 U 0.94 1 0.71 0.69 U 0.55 J 0.65 J 0.53 J 0.4 JDibromochloromethane 43 1.7 U 1.7 U 4.3 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 UDichlorodifluoromethane 22000 4 2.3 J 4.5 J 2.5 3.8 3.6 2.5 3.8 2.4 J 3.8 2.3 J 2.5Ethanol NLE 3.5 J 9.4 U 100 25 3.5 J 2.8 J 28 62 6.6 J 120 13 4.2 JEthyl acetate NLE 18 U 18 U 45 U 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 UEthylbenzene 250 0.17 J 0.87 U 2.2 U 0.32 J 0.87 U 0.87 U 0.65 J 0.18 J 0.23 J 1.1 0.24 J 0.2 JFreon TF 6600000 0.61 J 1.5 U 3.8 U 1.5 U 0.6 J 0.65 J 1.5 U 0.56 J 1.5 U 0.6 J 1.5 U 1.5 UHexachlorobutadiene 53 2.1 U 2.1 U 5.3 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 UIsopropyl alcohol NLE 1.6 J 12 U 9.4 J 3.6 J 12 U 12 U 2.7 J 16 5.2 J 6.7 J 4.8 J 3.4 J




205-SG-01 205-SG-11 205-SG-12 205-SG-15 205-SG-19





Location ID:Sample ID: 22-205-SG-01 23-205-SG-01 22-205-SG-11 23-205-SG-11 22-205-SG-12 01-DUP-SG-03 23-205-SG-12 22-205-SG-15 23-205-SG-15 22-205-SG-19 23-205-SG-19 01-DUP-SG-03

Sample Type: Sample Sample Sample Sample Sample Duplicate Sample Sample Sample Sample Sample DuplicateLab Sample ID: 200-24117-28 200-26412-19 200-24117-29 200-26412-20 200-24117-30 200-24117-31 200-26412-21 200-24117-32 200-26412-22 200-24117-33 200-26412-23 200-26412-24

Date: 9/10/2014 1/21/2015 9/10/2014 1/21/2015 9/10/2014 9/10/2014 1/21/2015 9/10/2014 1/21/2015 9/10/2014 1/21/2015 1/21/2015Units: (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3)

Compound1




205-SG-01 205-SG-11 205-SG-12 205-SG-15 205-SG-19

m,p-Xylene NLE 0.29 J 2.2 U 5.4 U 0.91 J 2.2 U 2.2 U 2.2 U 0.58 J 0.48 J 2.7 0.63 J 0.54 J2-Hexanone NLE 2 U 2 U 5.1 U 2 U 2 U 2 U 2 U 2 U 2 U 1.4 J 4.1 2 U2-Butanone 1100000 2.7 1.5 U 4 1.5 U 3.4 0.83 J 2.8 3.7 1.5 U 14 12 2.14-Methyl-2-Pentanone 660000 0.19 J 2 U 5.1 U 2 U 2 U 2 U 2 U 0.42 J 2 U 2.9 2.6 1.8 JMethyl methacrylate NLE 2 U 2 U 5.1 U 2 U 2 U 2 U 2 U 2 U 2 U 2 U 2 U 2 UMethyl tert-butyl ether 2400 0.72 U 0.72 U 1.8 U 0.72 U 0.72 U 0.72 U 0.72 U 0.72 U 0.72 U 0.72 U 0.72 U 0.72 UMethylene Chloride 61000 0.75 J 1.7 U 3.4 J 1.7 U 0.45 J 0.56 J 0.91 J 0.83 J 1.7 U 3.2 1.7 U 0.82 Jn-Heptane NLE 0.82 U 0.82 U 2 U 0.36 J 0.82 U 0.82 U 0.82 U 0.82 U 0.57 J 0.82 U 2.4 0.65 Jn-Hexane 150000 0.7 U 0.7 U 0.96 J 0.83 0.7 U 0.7 U 0.7 U 0.85 0.81 1.2 0.74 0.59 JPropylene NLE 8.6 U 8.6 U 22 U 8.6 U 8.6 U 8.6 U 8.6 U 8.6 U 8.6 U 8.6 U 8.6 U 8.6 UStyrene 220000 0.85 U 0.85 U 2.1 U 0.85 U 0.85 U 0.85 U 0.85 U 0.85 U 0.85 U 0.85 U 0.32 J 0.85 Utert-Butyl alcohol NLE 1.9 J 15 U 2.7 J 2.8 J 15 U 15 U 15 U 2.9 J 15 U 1 J 15 U 15 UTetrachloroethene 2400 4 10 1.7 2 J 1.4 U 1.5 1.3 J 1.4 U 2.4 0.82 J 1.4 U 1.4 U 1.4 UTetrahydrofuran NLE 15 U 15 U 37 U 15 U 15 U 15 U 15 U 15 U 15 U 4 J 15 U 15 UToluene 1100000 0.52 J 0.75 U 4.9 1.5 0.28 J 0.33 J 0.75 0.98 1.2 4.3 1.2 1.2trans-1,2-Dichloroethene 13000 0.79 U 0.79 U 2 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 Utrans-1,3-Dichloropropene NLE 0.91 U 0.91 U 2.3 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 UTrichlorofluoromethane 150000 2.4 0.92 J 3.1 1.4 2 2 1.3 1.9 1.2 1.7 1.2 1.2Vinyl acetate NLE 18 U 18 U 44 U 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 UVinyl chloride 140 4 0.1 U 0.1 U 0.26 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 UTotal Xylenes 22000 0.3 J 0.87 U 2.2 U 1.3 0.87 U 0.87 U 0.87 U 0.75 J 0.48 J 3.8 0.65 J 0.71 Jo-Xylene NLE 0.87 U 0.87 U 2.2 U 0.37 J 0.87 U 0.87 U 0.87 U 0.18 J 0.87 U 1.1 0.87 U 0.19 J








Location ID: 010-BG-01 010-3 010-4Sample ID: 21-010-BG-01 21-010-IA-03 21-010-IA-04 01-DUP-IA-03

Sample Type: Background Background Sample Sample Sample Duplicate Sample DuplicateLab Sample ID: 200-24117-15 200-24117-16 200-24117-17 200-24117-18

Date: 9/10/2014 9/10/2014 9/10/2014 9/10/2014Units: (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3)

Compound1

AOC 8 - COPCsTrichloroethene 3 4 0.21 U 0.21 U 10 0.21 U 0.21 U 0.21 U 0.21 U 0.21 UAOC 8 - Other Compounds1,1,1-Trichloroethane 22000 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U1,1,2,2-Tetrachloroethane 3 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U1,1,2-Trichloroethane 3 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U1,1-Dichloroethane 8 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U1,1-Dichloroethene 880 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U1,2,4-Trichlorobenzene 9 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U1,2,4-Trimethylbenzene NLE 0.3 J 0.98 U 0.44 J 0.98 U 0.43 J 0.43 J 0.98 U 0.98 U1,2-Dibromoethane 4 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U1,2-Dichlorobenzene 880 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U1,2-Dichloroethane 2 0.81 U 0.81 U 0.81 U 0.81 U 0.26 J 0.81 U 0.81 U 0.81 U1,2-Dichloropropane 2 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U1,2-Dichlorotetrafluoroethane NLE 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U1,3,5-Trimethylbenzene NLE 0.089 J 0.98 U 0.13 J 0.98 U 0.98 U 0.12 J 0.98 U 0.98 U1,3-Butadiene 1 0.44 U 0.44 U 0.44 U 0.44 U 0.44 U 0.44 U 0.44 U 0.44 U1,3-Dichlorobenzene NLE 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U1,4-Dichlorobenzene 3 0.089 U 1.2 U 0.14 U 1.2 U 0.14 J 0.14 J 1.2 U 1.2 U1,4-Dioxane NLE 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 U2,2,4-Trimethylpentane NLE 0.71 J 0.93 U 0.67 J 0.93 U 0.65 J 0.7 J 0.93 U 0.93 U2-Chlorotoluene NLE 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U3-Chloropropene 2 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U4-Ethyltoluene NLE 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 UAcetone 140000 6.7 J 16 20 12 U 22 26 8.1 J 12 UBenzene 2 0.53 J 0.61 J 0.53 J 0.59 J 0.5 J 0.53 J 0.66 0.64Benzyl chloride NLE 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 UBromodichloromethane 3 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 UBromoethene 2 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 UBromoform 11 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 UBromomethane 22 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 UCarbon disulfide 3100 1.6 U 1.6 U 1.5 J 1.6 U 0.43 J 1.6 U 1.6 U 1.6 UCarbon tetrachloride 3 0.38 J 0.46 J 0.41 J 0.4 J 0.6 J 0.64 J 0.41 J 0.46 JChlorobenzene 220 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 UChloroethane 44000 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 UChloroform 2 0.98 U 0.98 U 0.79 J 0.98 U 0.57 J 0.73 J 0.98 U 0.98 UChloromethane 390 1.1 1.2 1.1 1 U 1.4 1.4 1.2 1.3cis-1,2-Dichloroethene NLE 0.79 U 0.79 U 17 0.79 U 0.79 U 0.79 U 0.79 U 0.79 Ucis-1,3-Dichloropropene NLE 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 UCyclohexane 26000 0.69 U 0.69 U 0.41 J 0.69 U 0.38 J 0.69 U 0.69 U 0.69 UDibromochloromethane 4 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 UDichlorodifluoromethane 440 2.2 J 2.4 J 2.1 J 2.6 3.9 3.8 2.4 J 2.5Ethanol NLE 14 7.3 J 23 66 23 23 33 33Ethyl acetate NLE 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 UEthylbenzene 5 0.26 J 0.87 U 0.38 J 0.87 U 0.35 J 0.36 J 0.87 U 0.87 UFreon TF 130000 0.6 J 1.5 U 0.58 J 0.44 J 0.67 J 0.7 J 1.5 U 1.5 UHexachlorobutadiene 5 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 UIsopropyl alcohol NLE 1.3 J 1800 R 7.5 J 7.6 J 3.9 J 4.3 J 7.4 J 10 Jm,p-Xylene NLE 0.84 J 2.2 U 1 J 0.48 J 0.98 J 0.93 J 0.52 J 2.2 U2-Hexanone NLE 2 U 2 U 2 U 2 U 2 U 0.8 J 2 U 2 U2-Butanone 22000 1.2 J 1.5 U 4.7 1.5 U 3.6 4.4 1.9 1.5 U4-Methyl-2-Pentanone 13000 2 U 2 U 0.56 J 2 U 0.43 J 0.46 J 2 U 2 UMethyl methacrylate NLE 2 U 2 U 2 U 2 U 2 U 2 U 2 U 2 UMethyl tert-butyl ether 47 0.72 U 0.72 U 0.72 U 0.72 U 0.72 U 0.72 U 0.72 U 0.72 UMethylene Chloride 1200 1.6 J 1.1 J 1.5 J 0.94 J 2.6 2.1 1.5 J 1.2 Jn-Heptane NLE 0.46 J 0.82 U 0.75 J 0.42 J 0.72 J 0.98 0.82 U 0.42 Jn-Hexane 3100 1.4 0.7 U 1.3 0.7 U 1.3 1.3 0.53 J 0.49 JPropylene NLE 0.79 J 8.6 U 1.3 J 8.6 U 8.6 U 8.6 U 8.6 U 8.6 UStyrene 4400 0.85 U 0.85 U 0.23 J 0.85 U 0.17 J 0.85 U 0.85 U 0.85 Utert-Butyl alcohol NLE 15 U 15 U 15 U 15 U 15 U 15 U 15 U 15 UTetrachloroethene 47 4 0.31 J 1.4 U 31 1.4 U 1.4 U 1.4 U 1.4 U 1.4 UTetrahydrofuran NLE 15 U 15 U 0.53 J 15 U 15 U 15 U 15 U 15 UToluene 22000 2 0.54 J 2.7 0.99 2.7 2.4 1.1 1.3trans-1,2-Dichloroethene 260 0.79 U 0.79 U 0.14 J 0.79 U 0.79 U 0.79 U 0.79 U 0.79 Utrans-1,3-Dichloropropene NLE 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 UTrichlorofluoromethane 3100 1.2 1.2 1.2 1.3 1.9 2 1.2 1.2Vinyl acetate NLE 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 UVinyl chloride 2.8 4 0.1 U 0.1 U 0.14 0.1 U 0.1 U 0.1 U 0.1 U 0.1 UTotal Xylenes 440 1.1 0.87 U 1.4 0.68 J 1.3 1.3 0.52 J 0.87 Uo-Xylene NLE 0.32 J 0.87 U 0.39 J 0.21 J 0.31 J 0.34 J 0.87 U 0.87 U


Highlighting notes exceedance of screening level.1The compound list for this table includes the compounds analyzed under the TO-15 analysis.2NJDEP Indoor Air Screening Levels as are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 2013.3Table 1 is the regulatory screening level used for comparison of the analytical results. 4Site Specific Criteria based on nonresidential use (see Table 2-9).


Levels2,3


1/21/2015

01-DUP-IA-03

200-26412-1 200-26412-2 200-26412-3 200-26412-4

22-010-BG-01 22-010-IA-03 22-010-IA-04

1/21/2015 1/21/2015 1/21/2015





Location ID:Sample ID: 15-018-BG-01 15-018-IA-04 15-018-IA-05 15-018-IA-06

Sample Type: Background Background Sample Sample Sample Sample Sample SampleLab Sample ID: 200-24117-6 200-24117-7 200-24117-8 200-24117-9


Compound1

AOC 8 - COPCsTrichloroethene 3 4 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 UAOC 8 - Other Compounds1,1,1-Trichloroethane 22000 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U1,1,2,2-Tetrachloroethane 3 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U1,1,2-Trichloroethane 3 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U1,1-Dichloroethane 8 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U1,1-Dichloroethene 880 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U1,2,4-Trichlorobenzene 9 0.21 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U1,2,4-Trimethylbenzene NLE 0.39 J 0.98 U 0.36 J 0.98 U 0.28 J 0.98 U 0.24 J 0.98 U1,2-Dibromoethane 4 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U1,2-Dichlorobenzene 880 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U1,2-Dichloroethane 2 0.23 J 0.81 U 0.21 J 0.81 U 0.81 U 0.81 U 0.24 J 0.81 U1,2-Dichloropropane 2 1 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.45 J 0.92 U1,2-Dichlorotetrafluoroethane NLE 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U1,3,5-Trimethylbenzene NLE 0.14 J 0.98 U 0.1 J 0.98 U 0.98 U 0.98 U 0.08 J 0.98 U1,3-Butadiene 1 0.44 U 0.44 U 0.11 J 0.44 U 0.44 U 0.44 U 0.44 U 0.44 U1,3-Dichlorobenzene NLE 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U1,4-Dichlorobenzene 3 0.19 U 1.2 U 0.25 U 1.2 U 1.2 U 1.2 U 0.19 U 1.2 U1,4-Dioxane NLE 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 U2,2,4-Trimethylpentane NLE 0.89 J 0.93 U 0.76 J 0.93 U 0.62 J 0.93 U 0.62 J 0.93 U2-Chlorotoluene NLE 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U3-Chloropropene 2 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U4-Ethyltoluene NLE 0.13 J 0.98 U 0.12 J 0.98 U 0.98 U 0.98 U 0.98 U 0.98 UAcetone 140000 14 13 13 12 U 9.1 J 12 U 11 J 12 UBenzene 2 0.72 0.73 0.57 J 0.5 J 0.49 J 0.55 J 0.5 J 0.6 JBenzyl chloride NLE 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 UBromodichloromethane 3 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 UBromoethene 2 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 UBromoform 11 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 UBromomethane 22 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 UCarbon disulfide 3100 0.9 J 1.6 U 1.6 U 1.6 U 0.57 J 1.6 U 1.6 U 1.6 UCarbon tetrachloride 3 0.5 J 0.46 J 0.45 J 0.5 J 0.36 J 0.41 J 0.37 J 0.4 JChlorobenzene 220 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 UChloroethane 44000 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 UChloroform 2 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.13 J 0.98 UChloromethane 390 1.1 1 1.1 1 U 1 1 1.1 1 Ucis-1,2-Dichloroethene NLE 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 Ucis-1,3-Dichloropropene NLE 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 UCyclohexane 26000 0.95 0.69 U 0.36 J 0.69 U 0.69 U 0.69 U 0.45 J 0.69 UDibromochloromethane 4 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 UDichlorodifluoromethane 440 2.4 J 2.3 J 2.3 J 2.4 J 2.1 J 2.5 2.1 J 2.4 JEthanol NLE 24 10 15 5.6 J 13 4.8 J 13 4.7 JEthyl acetate NLE 13 J 18 U 2.9 J 18 U 18 U 18 U 5.9 J 18 UEthylbenzene 5 0.71 J 0.87 U 0.41 J 0.87 U 0.3 J 0.87 U 0.34 J 0.87 UFreon TF 130000 0.6 J 1.5 U 0.59 J 1.5 U 0.55 J 1.5 U 0.56 J 0.55 JHexachlorobutadiene 5 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 UIsopropyl alcohol NLE 2.6 J 1.4 J 2.9 J 1.4 J 3.8 J 12 2.1 J 1.3 Jm,p-Xylene NLE 1.5 J 2.2 U 1.3 J 2.2 U 0.96 J 2.2 U 0.91 J 2.2 U2-Hexanone NLE 2 U 2 U 2 U 2 U 2 U 2 U 2 U 2 U2-Butanone 22000 15 2.8 4.2 1.5 U 2.3 1.5 U 5.5 1.5 U4-Methyl-2-Pentanone 13000 2 U 2 U 0.24 J 2 U 0.13 J 2 U 0.19 J 2 UMethyl methacrylate NLE 2 U 2 U 2 U 2 U 2 U 2 U 0.29 J 2 UMethyl tert-butyl ether 47 0.72 U 0.72 U 0.72 U 0.72 U 0.72 U 0.72 U 0.72 U 0.72 UMethylene Chloride 1200 4.1 1.7 U 2 1.7 U 1.4 J 1.7 U 2.3 1.1 Jn-Heptane NLE 1.5 0.5 J 0.7 J 0.82 U 0.46 J 0.82 U 0.75 J 0.82 Un-Hexane 3100 2.7 0.48 J 1.5 0.7 U 1.2 0.7 U 1.7 0.34 JPropylene NLE 0.96 J 8.6 U 0.97 J 8.6 U 0.85 J 8.6 U 0.75 J 8.6 UStyrene 4400 0.21 J 0.85 U 0.18 J 0.85 U 0.85 U 0.85 U 0.15 J 0.85 Utert-Butyl alcohol NLE 15 U 15 U 15 U 15 U 15 U 15 U 15 U 15 UTetrachloroethene 47 4 0.42 J 1.4 U 0.3 J 1.4 U 1.4 U 1.4 U 0.24 J 1.4 UTetrahydrofuran NLE 0.4 J 15 U 15 U 15 U 15 U 15 U 15 U 15 UToluene 22000 30 0.9 8.7 0.24 J 4.5 1 13 0.88trans-1,2-Dichloroethene 260 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 Utrans-1,3-Dichloropropene NLE 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 UTrichlorofluoromethane 3100 1.4 1.2 3.3 1.5 2.1 1.4 3.1 1.4Vinyl acetate NLE 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 UVinyl chloride 2.8 4 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 UTotal Xylenes 440 2 0.87 U 1.7 0.87 U 1.3 0.87 U 1.2 0.87 Uo-Xylene NLE 0.54 J 0.87 U 0.45 J 0.87 U 0.33 J 0.13 J 0.33 J 0.87 U



(µg/m3)

018-BG-01 018-04

200-26412-25 200-26412-261/21/2015 1/21/2015

16-018-BG-01 16-018-IA-04018-05 018-06


Levels2,3

Unless Noted

1/21/2015 1/21/2015200-26412-28

16-018-IA-0616-018-IA-05

200-26412-27





Location ID:Sample ID: 25-200-BG-01 25-200-IA-02 25-200-IA-03 01-DUP-IA-04

Sample Type: Background Background Sample Sample Duplicate Sample Duplicate SampleLab Sample ID: 200-24117-1 200-24117-2 200-24117-3 200-24117-4


Compound1

AOC 8 - COPCsTrichloroethene 3 4 0.21 U 0.21 U 0.21 U 0.21 U 0.65 0.21 U 0.21 U 0.66AOC 8 - Other Compounds1,1,1-Trichloroethane 22000 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U1,1,2,2-Tetrachloroethane 3 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U1,1,2-Trichloroethane 3 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U1,1-Dichloroethane 8 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U1,1-Dichloroethene 880 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U1,2,4-Trichlorobenzene 9 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 0.22 U 3.7 U1,2,4-Trimethylbenzene NLE 0.2 J 0.98 U 0.26 J 0.98 U 0.27 J 0.26 J 0.27 J 0.23 J1,2-Dibromoethane 4 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U1,2-Dichlorobenzene 880 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U1,2-Dichloroethane 2 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U1,2-Dichloropropane 2 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U1,2-Dichlorotetrafluoroethane NLE 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U1,3,5-Trimethylbenzene NLE 0.079 J 0.98 U 0.085 J 0.98 U 0.98 U 0.093 J 0.078 J 0.98 U1,3-Butadiene 1 0.44 U 0.44 U 0.44 U 0.44 U 0.44 U 0.44 U 0.44 U 0.44 U1,3-Dichlorobenzene NLE 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U1,4-Dichlorobenzene 3 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U1,4-Dioxane NLE 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 U2,2,4-Trimethylpentane NLE 0.59 J 0.93 U 0.62 J 0.93 U 0.93 U 0.72 J 0.88 J 0.93 U2-Chlorotoluene NLE 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U3-Chloropropene 2 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U4-Ethyltoluene NLE 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 UAcetone 140000 7.7 J 7.7 J 11 J 7.8 J 11 J 12 J 17 7.6 JBenzene 2 0.46 J 0.66 0.51 J 0.64 U 0.68 0.51 J 0.59 J 0.65Benzyl chloride NLE 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 UBromodichloromethane 3 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 UBromoethene 2 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 UBromoform 11 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 UBromomethane 22 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 UCarbon disulfide 3100 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 UCarbon tetrachloride 3 0.42 J 0.58 J 0.38 J 1.3 U 0.51 J 0.36 J 0.48 J 0.46 JChlorobenzene 220 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 UChloroethane 44000 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 UChloroform 2 0.98 U 0.98 U 0.3 J 0.98 U 0.98 U 0.32 J 0.34 J 0.98 UChloromethane 390 1.1 1.2 1.1 1.3 1.1 1.1 1.1 1.3cis-1,2-Dichloroethene NLE 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 Ucis-1,3-Dichloropropene NLE 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 UCyclohexane 26000 0.47 J 0.69 U 0.59 J 0.69 U 0.69 U 0.69 U 0.69 U 0.49 JDibromochloromethane 4 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 UDichlorodifluoromethane 440 2.2 J 2.6 2.3 J 2.6 2.6 2.3 J 2.3 J 2.7Ethanol NLE 17 8.2 J 38 420 R 500 R 50 54 400 REthyl acetate NLE 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 UEthylbenzene 5 0.24 J 0.87 U 0.25 J 0.87 U 0.38 J 0.28 J 0.32 J 0.41 JFreon TF 130000 0.61 J 1.5 U 0.56 J 1.5 U 1.5 U 0.57 J 0.67 J 1.5 UHexachlorobutadiene 5 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 UIsopropyl alcohol NLE 1.5 J 12 U 55 14 26 56 58 40m,p-Xylene NLE 0.8 J 2.2 U 0.79 J 2.2 U 0.65 J 0.91 J 0.92 J 0.51 J2-Hexanone NLE 2 U 2 U 2 U 2 U 2 U 2 U 2 U 2 U2-Butanone 22000 1.3 J 2.1 1.5 1.5 U 1.5 U 2.1 3.5 1.5 U4-Methyl-2-Pentanone 13000 2 U 2 U 0.15 J 2 U 2 U 0.22 J 0.28 J 2 UMethyl methacrylate NLE 2 U 2 U 2 U 2 U 2 U 2 U 2 U 2 UMethyl tert-butyl ether 47 0.72 U 0.72 U 0.72 U 0.72 U 0.72 U 0.72 U 0.72 U 0.72 UMethylene Chloride 1200 0.94 J 1.4 J 1.2 J 1.9 1.3 J 1 J 1 J 0.88 Jn-Heptane NLE 0.5 J 0.82 U 0.58 J 0.82 U 0.82 U 0.64 J 1.1 0.82 Un-Hexane 3100 0.98 0.36 J 1.1 0.7 U 0.38 J 1.1 1.4 0.7 UPropylene NLE 1 J 8.6 U 0.98 J 8.6 U 8.6 U 1 J 1.3 J 8.6 UStyrene 4400 0.85 U 0.85 U 0.25 J 0.85 U 0.85 0.32 J 0.32 J 0.95tert-Butyl alcohol NLE 15 U 15 U 15 U 15 U 15 U 15 U 15 U 15 UTetrachloroethene 47 4 1.4 U 1.4 U 0.19 J 1.4 U 1.4 U 0.13 J 0.3 J 1.4 UTetrahydrofuran NLE 0.3 J 15 U 15 U 15 U 15 U 0.38 J 15 U 15 UToluene 22000 1.7 1 2.9 0.75 U 1.2 2.7 2.7 1.2trans-1,2-Dichloroethene 260 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 Utrans-1,3-Dichloropropene NLE 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 UTrichlorofluoromethane 3100 1.2 1.2 1.6 1.9 2.1 1.7 1.8 2.1Vinyl acetate NLE 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 UVinyl chloride 2.8 4 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 UTotal Xylenes 440 1.1 0.87 U 1.1 0.87 U 0.9 1.3 1.3 0.81 Jo-Xylene NLE 0.3 J 0.87 U 0.29 J 0.87 U 0.25 J 0.34 J 0.35 J 0.29 J



26-200-IA-0326-200-BG-01 26-200-IA-02


Generic Indoor Air Screening Levels2,3


200-BG-01 200-02 200-03

200-26412-101/21/2015 1/21/2015 1/21/2015 1/21/2015

200-26412-7 200-26412-8 200-26412-9

01-DUP-IA-04





Location ID:Sample ID: 22-205-BG-01 22-205-IA-01 22-205-IA-11 22-205-IA-12 22-205-IA-15 01-DUP-IA-05 22-205-IA-19

Sample Type: Background Background Sample Sample Sample Sample Duplicate Sample Sample Sample Duplicate Sample Sample SampleLab Sample ID: 200-24117-21 200-24117-22 200-24117-23 200-24117-24 200-24117-25 200-24117-26 200-24117-27

Date: 9/10/2014 9/10/2014 9/10/2014 9/10/2014 9/10/2014 9/10/2014 9/10/2014Units: (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3)

Compound1

AOC 8 - COPCsTrichloroethene 3 4 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U 0.21 U 0.32 0.21 U 0.21 UAOC 8 - Other Compounds1,1,1-Trichloroethane 22000 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U1,1,2,2-Tetrachloroethane 3 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U1,1,2-Trichloroethane 3 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U1,1-Dichloroethane 8 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U1,1-Dichloroethene 880 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U1,2,4-Trichlorobenzene 9 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U1,2,4-Trimethylbenzene NLE 0.33 J 0.16 J 0.25 J 0.98 U 0.43 J 0.31 J 0.28 J 0.46 J 0.29 J 0.26 J 0.98 U 0.18 J 0.31 J 0.2 J1,2-Dibromoethane 4 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U1,2-Dichlorobenzene 880 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U1,2-Dichloroethane 2 0.81 U 0.81 U 0.81 U 0.81 U 0.31 J 0.81 U 0.81 U 0.54 J 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U 0.81 U1,2-Dichloropropane 2 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U1,2-Dichlorotetrafluoroethane NLE 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U1,3,5-Trimethylbenzene NLE 0.98 U 0.98 U 0.98 U 0.98 U 0.16 J 0.98 U 0.98 U 0.14 J 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U1,3-Butadiene 1 0.44 U 0.44 U 0.44 U 0.44 U 0.44 U 0.44 U 0.44 U 0.44 U 0.44 U 0.44 U 0.44 U 0.44 U 0.44 U 0.44 U1,3-Dichlorobenzene NLE 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U1,4-Dichlorobenzene 3 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U1,4-Dioxane NLE 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 U 2.7 J 18 U 18 U2,2,4-Trimethylpentane NLE 0.74 J 0.93 U 0.82 J 0.93 U 0.79 J 0.93 U 0.93 U 0.67 J 0.93 U 0.73 J 0.78 J 0.93 U 0.71 J 0.93 U2-Chlorotoluene NLE 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U3-Chloropropene 2 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U4-Ethyltoluene NLE 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 UAcetone 140000 26 12 U 13 12 U 27 9.8 J 9.5 J 17 7.2 J 18 44 8.1 J 17 12 UBenzene 2 0.52 J 0.73 0.46 J 0.67 0.5 J 0.85 0.69 0.56 J 0.71 0.64 0.66 0.79 0.54 J 0.81Benzyl chloride NLE 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 UBromodichloromethane 3 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 UBromoethene 2 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 U 0.87 UBromoform 11 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 UBromomethane 22 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 U 0.78 UCarbon disulfide 3100 5.7 1.6 U 0.42 J 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 1.6 U 0.66 J 1.6 U 1.6 U 1.6 U 1.6 UCarbon tetrachloride 3 0.53 J 0.49 J 0.5 J 0.44 J 0.59 J 0.49 J 0.51 J 0.55 J 0.46 J 0.54 J 0.58 J 0.25 J 0.58 J 0.58 JChlorobenzene 220 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 U 0.92 UChloroethane 44000 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 UChloroform 2 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 U 0.98 UChloromethane 390 1.3 1 U 1.3 1 1.3 1.2 1.4 1.3 1.1 1.4 1.6 1.4 1.4 1.2cis-1,2-Dichloroethene NLE 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 Ucis-1,3-Dichloropropene NLE 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 UCyclohexane 26000 0.69 U 0.69 U 0.69 U 0.69 U 0.69 U 0.69 U 0.69 U 0.69 U 0.69 U 0.65 J 0.71 0.69 U 0.48 J 0.69 UDibromochloromethane 4 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 UDichlorodifluoromethane 440 3.5 2.5 3.4 2.4 J 3.5 2.7 2.6 3.6 2.6 3.5 3.9 2.5 3.7 2.6Ethanol NLE 79 9.8 9.7 5 J 130 26 26 130 35 130 160 32 110 29Ethyl acetate NLE 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 UEthylbenzene 5 0.48 J 0.87 U 0.27 J 0.87 U 0.52 J 0.27 J 0.27 J 0.51 J 0.87 U 0.41 J 0.38 J 0.87 U 0.33 J 0.25 JFreon TF 130000 0.59 J 0.7 J 0.59 J 1.5 U 0.63 J 1.5 U 1.5 U 0.55 J 1.5 U 0.5 J 0.56 J 1.5 U 0.64 J 1.5 UHexachlorobutadiene 5 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 UIsopropyl alcohol NLE 14 1.3 J 1.5 J 12 U 7.9 J 4.7 J 4.8 J 7.2 J 8.4 J 52 34 16 28 20


Levels2,3


205-BG-01 205-01 205-1123-205-BG-01 23-205-IA-01 23-205-IA-11 01-DUP-IA-05

1/21/2015200-26412-17 200-26412-18

1/21/2015200-26412-12 200-26412-13 200-26412-14 200-26412-15 200-26412-16

1/21/2015 1/21/2015 1/21/2015 1/21/2015 1/21/2015

23-205-IA-15205-19

23-205-IA-19205-12 205-15

23-205-IA-12





Location ID:Sample ID: 22-205-BG-01 22-205-IA-01 22-205-IA-11 22-205-IA-12 22-205-IA-15 01-DUP-IA-05 22-205-IA-19

Sample Type: Background Background Sample Sample Sample Sample Duplicate Sample Sample Sample Duplicate Sample Sample SampleLab Sample ID: 200-24117-21 200-24117-22 200-24117-23 200-24117-24 200-24117-25 200-24117-26 200-24117-27

Date: 9/10/2014 9/10/2014 9/10/2014 9/10/2014 9/10/2014 9/10/2014 9/10/2014Units: (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3)

Compound1


Levels2,3


205-BG-01 205-01 205-1123-205-BG-01 23-205-IA-01 23-205-IA-11 01-DUP-IA-05

1/21/2015200-26412-17 200-26412-18

1/21/2015200-26412-12 200-26412-13 200-26412-14 200-26412-15 200-26412-16

1/21/2015 1/21/2015 1/21/2015 1/21/2015 1/21/2015

23-205-IA-15205-19

23-205-IA-19205-12 205-15

23-205-IA-12

m,p-Xylene NLE 1.3 J 2.2 U 0.61 J 0.5 J 1.4 J 0.72 J 0.73 J 1.4 J 0.77 J 1.1 J 0.92 J 0.74 J 0.85 J 0.76 J2-Hexanone NLE 2 U 2 U 2 U 2 U 0.85 J 2 U 2 U 2 U 2 U 2 U 1.2 J 2 U 2 U 2 U2-Butanone 22000 10 1.5 U 1.5 1.5 U 4.7 1.8 1.5 U 2 1.5 U 1.8 7.6 1.5 U 1.7 1.5 U4-Methyl-2-Pentanone 13000 0.96 J 2 U 2 U 2 U 0.42 J 2 U 2 U 0.16 J 2 U 0.26 J 0.59 J 2 U 2 U 2 UMethyl methacrylate NLE 2 U 2 U 2 U 2 U 2 U 2 U 2 U 2 U 2 U 2 U 2 U 2 U 2 U 2 UMethyl tert-butyl ether 47 0.72 U 0.72 U 0.72 U 0.72 U 0.72 U 0.72 U 0.72 U 0.72 U 0.72 U 0.72 U 0.72 U 0.72 U 0.72 U 0.72 UMethylene Chloride 1200 2 1.8 2.3 2.7 2.1 2.7 3 3.6 2.9 2.1 3.1 1.7 U 2.4 1.2 Jn-Heptane NLE 0.82 U 0.36 J 0.43 J 0.82 U 1.1 1.2 0.82 U 0.63 J 0.82 U 0.89 0.82 U 0.82 U 0.89 0.54 Jn-Hexane 3100 1.3 0.7 U 1.3 0.7 U 1.7 0.63 J 0.6 J 1.9 0.68 J 1.8 1.5 0.67 J 1.5 0.53 JPropylene NLE 8.6 U 8.6 U 8.6 U 8.6 U 8.6 U 8.6 U 8.6 U 8.6 U 8.6 U 8.6 U 8.6 U 8.6 U 8.6 U 8.6 UStyrene 4400 0.19 J 0.85 U 0.85 U 0.85 U 0.11 J 0.85 U 0.85 U 0.14 J 0.85 U 0.85 U 0.85 U 0.85 U 0.17 J 0.14 Jtert-Butyl alcohol NLE 15 U 15 U 15 U 15 U 15 U 15 U 15 U 15 U 15 U 15 U 1.2 J 15 U 15 U 15 UTetrachloroethene 47 4 0.34 J 1.4 U 1.4 U 1.4 U 0.37 J 1.4 U 1.4 U 0.34 J 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 UTetrahydrofuran NLE 1.9 J 15 U 15 U 15 U 15 U 15 U 15 U 15 U 15 U 15 U 15 U 0.7 J 15 U 15 UToluene 22000 2.9 1.2 2 1.1 3 1.6 1.6 6.5 1.9 3.1 4.2 1.4 3 1.4trans-1,2-Dichloroethene 260 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 U 0.79 Utrans-1,3-Dichloropropene NLE 3 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 U 0.91 UTrichlorofluoromethane 3100 1.7 1.2 2.3 1.3 1.8 1.4 1.2 1.9 1.2 1.8 2 1.2 1.8 1.4Vinyl acetate NLE 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 U 18 UVinyl chloride 2.8 4 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 UTotal Xylenes 440 1.7 0.87 U 0.89 0.52 J 1.8 0.74 J 1.1 1.8 1.2 1 1.2 0.74 J 1.1 0.74 Jo-Xylene NLE 0.39 J 0.87 U 0.28 J 0.87 U 0.45 J 0.87 U 0.32 J 0.45 J 0.4 J 0.87 U 0.31 J 0.87 U 0.28 J 0.87 U


1The compound list for this table includes the compounds analyzed under the TO-15 analysis.2NJDEP Indoor Air Screening Levels as are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 2013.3Table 1 is the regulatory screening level used for comparison of the analytical results. 4Site Specific Criteria based on nonresidential use (see Table 2-9).



Table 5-10Meteorological Data Summary - Groundwater AOC 8A/B


Dates Sampled Temperature Range (F)

Barometric Pressure Station Average

(inches Hg)Precipitation

(inches) September 2014

9/9/2014 62 - 75 30.19 0.029/10/2014 93 - 79 30.06 0

January 20151/20/2015 31 - 42 29.88 01/21/2015 22 - 34 30.09 Trace

Meteorological data obtained from the NOAA National Climatic Data Center (Station Location: Newark Liberty International AP (14734)


Table 5-11EPA Building 10 Sample Summary










6-1

February 2016

6. REFERENCES

Avatar (Avatar Environmental, LLC). 2013. Uniform Federal Policy – Quality Assurance Project

Plan, Former Raritan Arsenal Remedial Investigation, Area 4 and Area 18A/B and Vapor

Intrusion Pathway Evaluation. Prepared for U.S. Army Corps of Engineer – New England

District. September 18, 2013.

Avatar. 2014. Draft IAQ Report #10. October 2014.

Geosyntec (Geosyntec Consultants, Inc.). 2010. Remedial Progress Report and Request for Site-

Specific Soil Gas Screening Levels, Wind-Driven Subslab Venting System, 160 Fieldcrest

Avenue, Edison, New Jersey. 12 May 2010.

Geosyntec. 2012. Remedial Action Progress Report, Passive Subslab Venting System, 160

Fieldcrest Avenue, Former Raritan Arsenal, Edison, New Jersey, submitted to the NJDEP on 6

January 6 2012.

Geosyntec. 2013. Remedial Action Progress Report, Passive Sub-Slab Venting System, 160

Fieldcrest Avenue, Former Raritan Arsenal, Edison, New Jersey. Submitted to the NJDEP on 13

February 2013.

Geosyntec. 2014. Remedial Action Progress Report, Passive Sub-Slab Venting System, 160


January 2014

Geosyntec. 2015a. Remedial Action Progress Report, Passive Sub-Slab Venting System, 160


March 2015.

Geosyntec. 2015b. Remedial Action Progress Report, Passive Sub-Slab Venting System, 102-

168 Fernwood Avenue, Former Raritan Arsenal, Edison, New Jersey. Submitted to the NJDEP

on 26 March 2015

Geosyntec. 2015c. Sub-slab Depressurization (SSD) System Evaluation Results, EPA Building

10, Former Raritan Arsenal, Edison, New Jersey. Submitted to the NJDEP on 26 March 2015

GSI Environmental. 2013. Final Use of Compound-Specific Stable Isotope Analysis to

Distinguish between Vapor Intrusion and Indoor Sources of VOCs. Version 1. June 2013.

Hodgson, A.T.; Garbesi, K.; Sextro, R.G.; and Daisey, J, Soil-gas contamination and entry of

volatile organic compounds into a house near a landfill. 1992. Journal of the Air and Waste

Management Association 42: 277-283.

NJDEP (New Jersey Department of Environmental Protection. 2003. Indoor Air VOC Sampling

Analysis Requirements, Site Remediation Program. April 2003.




6-2

February 2016

NJDEP. 2013. Vapor Intrusion Technical Guidance. Version 3.1 March 2013.

Shaw (Shaw Environmental, Inc.). 2009. Final IAQ Report #4. April 2009.

Shaw. 2010a. Draft Final IAQ Report #5. July 2010.

Shaw. 2010b. Draft IAQ Report #6. August 2010.

Shaw. 2010c. Final Remedial Action Report, Building 165 and Area 18C Groundwater

Treatment Pilot Systems, Former Raritan Arsenal, Edison, New Jersey. November 2010.

USACE (U.S. Army Corps of Engineers). 2004. Approach for Evaluating Potential IAQ

Impacts, Former Raritan Arsenal, Edison, NJ. 21 September 2004.

USACE. 2014. Building 165 Work Plan for Vapor Mitigation System and Monitoring. 29

December 2014.

U.S. Environmental Protection Agency (EPA). 2002. Draft Guidance for Evaluating the Vapor

Intrusion to Indoor Air Pathway from Groundwater and Soils. November 2002.

Weston (Weston Solutions, Inc.). 1996. Final Site-Wide Hydrogeology Report, Former Raritan

Arsenal Phase II Remedial Investigation. June 1996.

Weston. 1999. Final Supplemental Report of Investigation, Areas 18B, 18C, 18D, 18F, and 18G

Investigations. Contract No. DACA-41-92-D-8002. Delivery Order 0012. July 1999.

Weston. 2002a. Draft Final Groundwater Natural Attenuation Report. 2002.

Weston. 2002b. Final Remedial Action Report, Remedial Construction – Areas 11, 12, 18A, 18C,

and W. Contract No. DACA-41-92-D-8002. Delivery Order 0014. March 2002.

Weston. 2003a. Final Groundwater Natural Attenuation Report, Former Raritan Arsenal. May

2003.

Weston. 2003b. Indoor Air Monitoring Work Plan for Building 165. 3 October 2003.

Weston. 2004. Final Remedial Action Report, Remedial Construction – Areas 12, 18B, 18C, and

Building 256. Contract No. DACA45-98-D-0004. Task Order 49. May 2004.

Weston. 2005a. IAQ Evaluation (Steps One through Four), Former Raritan Arsenal. February

2005.

Weston. 2005b. IAQ Report. November 2005.

Weston. 2005c. Final Supplemental Remedial Investigation Report Area 18C – Ramp Area and

Building 151/165. June 2005.




6-3

February 2016

Weston. 2006a. IAQ Report #2. September 2006.

Weston. 2006b. Final Supplemental Groundwater Data Report. September 2006.

Weston. 2008a. IAQ Report #3. July 2008.

Weston. 2008b. Draft Groundwater Remedial Action Work Plan for the Former Raritan Arsenal.

February 2008.

Weston. 2011. Final Groundwater Compliance Monitoring Progress Report For the Former

Raritan Arsenal. 2011.

Weston. 2012. Final IAQ Report #7. November 2012.

Weston. 2014a. Draft IAQ Report #9. May 2014.

Weston. 2014b. Final IAQ Report #8. March 2014.

Weston. 2015. Draft Final Groundwater and Vapor Intrusion Feasibility Study. April 2015.

Appendices (On CD Only)

final indoor air quality report #11

Documents