INDOOR AIR QUALITY REPORT #7

Transcription

1 U.S. ARMY CORPS OF ENGINEERS FINAL INDOOR AIR QUALITY REPORT #7 FORMER RARITAN ARSENAL EDISON, NEW JERSEY Contract Number: W912DR-9-D-15 Delivery Order 22 DCN: RA AAAD November 212 Prepared for: U.S. ARMY CORPS OF ENGINEERS Prepared by: WESTON SOLUTIONS, INC. 25 Campus Drive Edison, New Jersey 8837 W.O. #

2 TABLE OF CONTENTS Section Title Page SECTION 1. INTRODUCTION OBJECTIVE BACKGROUND VAPOR MIGRATION PATHWAY USACE INDOOR AIR EVALUATION PROCESS SECTION 2. METHODOLOGY SAMPLING DESIGN SAMPLING METHODS Groundwater Evaluation Sub-slab Soil Gas Sampling Method Building Survey Method Indoor Air Sampling Method Air Sampling Method Deviations Meteorological Data Quality Assurance/Control Sample Handling and Shipping Data Validation Procedures SCREENING BENCHMARKS NJDEP Vapor Intrusion Guidelines for Indoor Air and Sub-slab Soil Gas EPA Generic Screening Benchmarks for Target Indoor Air and Shallow Soil Gas Concentrations DOD Vapor Intrusion Handbook Risk-Based Residential Air Concentrations for Indoor Air SECTION 3. SAMPLING RESULTS FOR GROUNDWATER AREA OF CONCERN OVERVIEW OF GROUNDWATER AOC 2 RESULTS Groundwater AOC Sub-slab Soil Gas Building Survey Indoor Air Meteorological Data FIELDCREST AVENUE Prior Investigations Current Investigation Sub-slab Soil Gas and Vapor Recovery System Results Building Survey Indoor Air Sampling Results Integrated Discussion of Results Conclusions and Recommendations CAMPUS PLAZA Prior Investigations Current Investigation Sub-slab Soil Gas Results Building Survey Indoor Air Sampling Results Integrated Discussion of Results Conclusions and Recommendations BUILDING Prior Investigations Current Investigations Conclusions and Recommendations i

3 TABLE OF CONTENTS (CONTINUED) SECTION 4. SAMPLING RESULTS FOR GROUNDWATER AREA OF CONCERN OVERVIEW OF GROUNDWATER AOC 6 RESULTS Groundwater AOC Sub-slab Soil Gas Building Survey Indoor Air Meteorological Data FERNWOOD AVENUE Prior Investigations Current Investigation Sub-slab Soil Gas Results Indoor Air Sampling Results Integrated Discussion of Results Conclusions and Recommendations SECTION 5. SAMPLING RESULTS FOR GROUNDWATER AREA OF CONCERN OVERVIEW OF GROUNDWATER AOC 8 RESULTS Groundwater AOC Sub-slab Soil Gas Building Survey Indoor Air Meteorological Data EPA BUILDING Prior Investigations Current Investigation Sub-slab Soil Gas Results Indoor Air Sampling Results Integrated Discussion of Results Conclusions and Recommendations EPA BUILDING Prior Investigations Current Investigation Sub-slab Soil Gas Results Indoor Air Sampling Integrated Discussion of Results Conclusions and Recommendations EPA BUILDING Prior Investigations Current Investigation Sub-slab Soil Gas Results Indoor Air Sampling Results Integrated Discussion of Results Conclusions and Recommendations EPA BUILDING Prior Investigations Current Investigation Sub-slab Soil Gas Results Indoor Air Sampling Results Integrated Discussion of Results Conclusions and Recommendations EPA BUILDING Prior Investigations Current Investigation Sub-slab Soil Gas Results Indoor Air Sampling Results ii

4 TABLE OF CONTENTS(CONTINUED) Integrated Discussion of Results Conclusions and Recommendations SECTION 6. REFERENCES iii

5 LIST OF TABLES Table ES-1 ES-2 ES-3 Title AOC 2 Sampling Results and Proposed Action Summary AOC 6 Sampling Results and Proposed Action Summary AOC 8 Sampling Results and Proposed Action Summary 1-1 Building and Tenant Locations 2-1 Subslab Soil Gas Sample Location Summary Groundwater AOC 2, September 21, October 21, and February Indoor Air Sample Location Summary Groundwater AOC 2, September 21, October 21, and February Subslab Soil Gas Sample Location Summary Groundwater AOC 6, April Indoor Air Sample Location Summary Groundwater AOC 6, April Subslab Soil Gas Sample Location Summary Groundwater AOC 8, September 21, October 21, and February Indoor Air Sample Location Summary Groundwater AOC 8, September 21, October 21, and February Contaminants of Potential Concern (COPCs) Groundwater AOC Subslab Soil Gas Analytical Results: September 21 and February 211, Building 165: Groundwater AOC Vapor Recovery Analytical Results: September 21 and February 211, Building 165: Groundwater AOC Indoor Air Analytical Results: September 21 and February 211, Building 165: Groundwater AOC Subslab Soil Gas Analytical Results: September 21 and February 211, Campus Plaza 4: Groundwater AOC Indoor Air Analytical Results: September 21 and February 211, Campus Plaza 4: Groundwater AOC Contaminants of Potential Concern (COPCs) Groundwater AOC Subslab Soil Gas Analytical Results: April 211, Fernwood Avenue: Groundwater AOC Indoor Air Analytical Results: April 211, Fernwood Avenue: Groundwater AOC Contaminants of Potential Concern (COPCs) Groundwater AOC Subslab Soil Gas Analytical Results: September 21 and February 211, EPA Building 1: Groundwater AOC Indoor Air Analytical Results: September 21 and February 211, EPA Building 1: Groundwater AOC Subslab Soil Gas Analytical Results: September 21 and February 211, EPA Building 18: Groundwater AOC 8 v

6 List of Tables (Continued) 5-5 Indoor Air Analytical Results: September 21 and February 211, EPA Building 18: Groundwater AOC Summary of Subslab Soil Gas Results for EPA Building 2: Groundwater AOC Indoor Air Analytical Results: September 21 and February 211, EPA Building 2: Groundwater AOC Subslab Soil Gas Analytical Results: September 21 and February 211, EPA Building 25: Groundwater AOC Indoor Air Analytical Results: September 21 and February 211, EPA Building 25: Groundwater AOC Subslab Soil Gas Analytical Results: September 21 and February 211, EPA Building 29: Groundwater AOC Indoor Air Analytical Results: September 21 and February 211, EPA Building 29: Groundwater AOC 8 v

7 LIST OF FIGURES Figure ES-1 Title Indoor Air Program Overview 1-1 Indoor Air Evaluation Approach 3-1 PCE & TCE Results for Subslab Soil Gas and Indoor Air Samples, Building PCE & TCE Results for Subslab Soil Gas and Indoor Air Samples, Campus Plaza TCE & PCE Results for Subslab Soil Gas and Indoor Air Samples, Fernwood Avenue 5-1 PCE & TCE Results for Subslab Soil Gas and Indoor Air Samples, EPA Building PCE & TCE Results for Subslab Soil Gas and Indoor Air Samples, EPA Building TCE & PCE Results for Subslab Soil Gas and Indoor Air Samples, EPA Building PCE & TCE Results for Subslab Soil Gas and Indoor Air Samples, EPA Building PCE & TCE Results for Subslab Soil Gas and Indoor Air Samples, EPA Building 29 vi

8 LIST OF APPENDICES Appendix A B C D E F G H I Title Leak Test Results Meteorological Data AOC 2 Historic Results Summary AOC 6 Historic Results Summary AOC 8 Historic Results Summary Building Survey Forms Building 16 December 9 th, 211 Progress Report Hazsites Laboratory Analytical Reports vii

9 LIST OF ABBREVIATIONS Amax - Amax Engineering Corporation AOC - area of concern bgs - below ground surface Brooks - Brooks Equipment Company Building Fieldcrest Avenue Building Fieldcrest Avenue C - cancer CD Compact Disc Celsis - Celsis Laboratory Group cis-1,2-dce - cis-1,2-dichloroethene Clayton - Clayton Group Service cm - centimeter COPC - contaminant(s) of potential concern DERP-FUDS - Defense Environmental Restoration Program Formerly Used Defense Sites DOD - Department of Defense EPA - United States Environmental Protection Agency EPA Table 2C-GW - EPA Generic Screening Benchmarks for Target Indoor Air EPA Table 2C- - Concentrations Groundwater EPA Generic Screening Benchmarks for Target Indoor Air Concentrations Shallow Soil Gas FBC - Federal Business Centers former Arsenal - Former Raritan Arsenal ft - feet Geosyntec - Geosyntec Consultants GWQS - Groundwater Quality Standard(s) IAQ - indoor air quality IAQ Approach - Approach for Evaluating Potential Indoor Air Quality Impacts (USACE, 21) Mackay - Mackay Communications Method TO-15 - Compendium of Methods for the Determination of Toxic Organic Compounds in Ambient Air: Method TO-15, Second Edition (EPA, January 1999) mg/kg - milligrams per kilogram mg/kg-d - milligrams per kilogram per day mg/l - milligrams per liter MNA - Monitored Natural Attenuation MSDS - Material Safety Data Sheet MSSCC - Most Stringent Soil Cleanup Criteria viii

10 LIST OF ABBREVIATIONS (CONTINUED) MTBE - methyl tertiary butyl ether N - noncancer NJDEP - New Jersey Department of Environmental Protection PCE - tetrachloroethylene QC - Quality Control RA - remedial action RAWP - Remedial Action Work Plan RD/RA - remedial design/remedial action RI/FS - Remedial Investigation/Feasibility Study SOP - Standard Operating Procedure SGSLs - site-specific soil gas screening levels TAGA - trace atmospheric gas analyzer TCE - trichloroethylene THQ - total hazard quotient TR - target risk ug/l - micrograms per liter ug/m 3 - micrograms per cubic meter USACE - United States Army Corps of Engineers VIG - Vapor Intrusion Guidance VOC - volatile organic compound Weston - Weston Solutions, Inc. ix

11 EXECUTIVE SUMMARY This report focuses on the results from indoor air and sub-slab soil gas sampling events completed at the Former Raritan Arsenal (former Arsenal) during September 21, October 21, February 211, and April 211 (the latter from Fernwood only). The report also summarizes results relative to prior sampling events. Buildings requiring investigation for vapor intrusion were sampled for volatile organic compounds (VOCs) in sub-slab soil gas and indoor air. The results were evaluated collectively to determine whether the vapor intrusion pathway is complete for each building, to make recommendations for future action, and/or to determine if existing vapor mitigation systems are operating effectively. Based on the analytical results of the most recent sampling events, the recommendations for each building are listed in Tables ES-1 through ES-3. It should be noted that USACE is in the process of completing a site-wide Draft Groundwater and Vapor Intrusion Feasibilty Study report (GW/VI FS). The recommendations in Tables ES-1 through ES-3 are consistent with the recommendations of the GW/VI FS (Weston, June 211). AOC 2 Two buildings (Building 165 and Campus Plaza 4) were sampled within Area of Concern (AOC) 2 in September 21 and February 211 as part of the ongoing monitoring program. As part of the continued monitoring of the passive sub-slab venting system, Building 16 was sampled from March 21 thru November 211 (Table ES-1). Building 16 (at 16 Field Crest Avenue) analytical results showed concentrations in sub slab soil gas at ten times below the New Jersey Department of Environmental Protection (NJDEP) Vapor Intrusion Guidance (VIG) screening levels. All indoor air analytical results were either non-detect or below the NJDEP VIG screening levels. The analytical results illustrate that vapor recovery system at Building 16 is operating as designed. It is recommended that monitoring continue on an annual basis to ensure the vapor recovery system continues to operate properly. Building 165 (at 165 Fieldcrest Avenue) results showed a decreasing trend in VOC concentrations in the sub-slab soil gas relative to prior sampling events. Tetrachloroethylene (PCE) and trichloroethylene (TCE) did not exceed regulatory sub-slab screening levels in either sampling event. Dichlorobenzene (1,4-DCB) was the only VOC detected in soil gas above regulatory limits. This occurred only during the September 21 event, at one sampling location (Celsis 4). However, VOCs (1,4-DCB and chloroform) were detected in indoor air within Building 165 above regulatory screening levels at multiple sample location points during both events. The chloroform concentrations cannot be attributed to subslab soil gas concentrations because they were not detected or detected below the New Jersey Department of Environmental NJDEP VIG screening levels and indoor air detections. The 1,4-DCB concentrations in indoor air can be attributed to soil gas concentrations because 1,4-DCB is detected at soil gas in one location (Celsis 4). Analytical results from the two vapor recovery sampling ports indicated no constituents detected at concentrations exceeding the NJDEP VIG screening levels for soil gas. The results indicate ES-1

12 that the subslab vapor recovery ports are working effectively to reduce soil gas concentrations of PCE and TCE, but 1,4-DCB remains in soil gas. Based on Table 3-1 and historic groundwater analytical results, 1,4-DCB is not a contaminant of concern in groundwater. Therefore, there is not a complete vapor intrusion exposure pathway for 1,4-DCB into indoor air. After an evaluation of the data from the most recent sampling rounds (September 21 and February 211), continued semi-annual monitoring is proposed for Building 165. The adequacy of the monitoring program at Building 165 will continue to be reevaluated on an annual basis. It is recommended that the vapor recovery system at Building 165 continue to be monitored on a semi-annual frequency. At Campus Plaza 4 there is no sub-slab venting system in place. TCE and PCE concentrations in soil gas samples continue to exceed the NJDEP VIG screening levels. TCE concentrations were detected in indoor air at location CP4-2 in September 21 and February 211 exceeding the VIG screening levels, indicating that a complete exposure pathway continues to exist. PCE concentrations in indoor air did not exceed the VIG during the September 21 and February 211 sampling rounds, indicating that while a complete pathway may still exist, the concentrations present do not pose a health risk. Other VOCs (1,4-DCB and methylene chloride) were detected at concentrations above the VIG screening levels for indoor air but were not detected in soil gas or groundwater. Therefore, these concentrations can be attributed to potential tenant-related activities. The U.S. Army Corps of Engineers (USACE) will agree to continue both sub-slab and indoor air sampling for Campus Plaza 4 semi-annually over the next year. At the end of the year the data will be evaluated to determine the need for additional sampling events; if there are three successive sampling rounds where VOCs in soil gas are not detected in indoor air the monitoring program will be curtailed. AOC 6 One building ( Fernwood) within AOC6 is being monitored under the monitoring program. No VOCs were detected at concentrations in indoor air that would indicate a complete exposure pathway. This is likely because USACE installed a sub-slab venting mitigation system on October 2, 29 to address VOCs in soil gas. Passive sampling of the mitigation system is being performed and results will be submitted in a separate Interim Progress Report and Performance Monitoring Report for the sub-slab venting system. In April 211, PCE and TCE were detected at concentrations greater than NJDEP VIG screening levels in sub-slab soil gas at the same sample location (SG-2). Neither TCE nor PCE were detected above NJDEP VIG screening levels for indoor air. This indicated 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. Chloroform concentrations were detected in indoor air above NJDEP VIG screening levels but concentrations in subslab soil gas did not exceed the screening levels in sub-slab soil gas. Therefore, chloroform contamination in indoor air does not appear to be Department of Defense (DOD)-related. No other VOCs were detected in the sub-slab soil gas or indoor air samples above their respective screening levels. ES-2

13 USACE recommends one final sampling round of indoor air and sub-slab soil gas data to be followed by monitoring of the passive treatment system. AOC 8 Five buildings (Buildings 1, 18, 2, 25, and 29) were sampled within AOC 8 (Table ES-3) during September 21, October 21, and February 211. At all five buildings, there are no complete vapor intrusion pathways to indoor air for any VOC. This is likely due to each building having a sub-slab remediation system in place. In September 211, TCE was detected in sub-slab soil gas in EPA Building 1 exceeding NJDEP VIG screening levels. However, TCE concentrations in indoor air did not exceed the screening levels. The February 211 sampling event did not have any VOC concentrations exceeding the NJDEP VIG screening levels in sub-slab soil gas, indoor air or ambient samples. Since the installation of a remedial system, VOCs are not migrating into the indoor air. Semiannual monitoring of the remedial system has proven that the system is operating properly. It is recommended that the monitoring program continue for another year. At the end of the year, the data will be evaluated to determine the need for additional sampling events; if there are three successive sampling rounds where VOCs in soil gas are not detected in indoor air the monitoring program will be curtailed. TCE concentrations in sub-slab soil gas at EPA Building 18 exceeded NJDEP VIG screening levels during September 21 and February 211 sampling events. However, indoor air and ambient sample results for Building 18 did not indicate VOC concentrations above NJDEP VIG screening levels. Due to installation of a sub-slab remedial system, VOCs are not migrating into the building. It is recommended that the semi-annual monitoring continue for another year with emphasis on insuring that the sub-slab remedial system is operating properly. At the end of the year, USACE will evaluate the data to determine the need for additional sampling events. TCE concentrations were detected in soil gas at EPA Building 2 above the NJDEP VIG screening levels. However, the indoor air samples from September 21, October 21, and February 211 did not indicate VOC concentrations exceeding the NJDEP VIG screening levels. The data illustrates that a complete vapor intrusion pathway no longer exists at Building 2. It appears that the sub-slab depressurization system installed by the building owner is operating properly. The USACE has agreed to monitor Building 2 to ensure the effectiveness of the system. It is recommended that the monitoring continue at the same semi-annual frequency. The USACE will evaluate the data after a year to determine if there is a need for additional sampling events. The analytical results for EPA Building 25 did not indicate PCE concentrations detected in the sub-slab exceeding NJDEP VIG screening levels for the September 21, October 21, and February 211 sampling events. However, TCE was detected in soil gas during these sampling events above the NJDEP VIG screening levels. TCE and PCE were not detected in the indoor air above NJDEP VIG screening levels. Since TCE was not detected in indoor air, this confirms that the sub-slab depressurization system is operating properly and there is no longer a complete vapor intrusion pathway. Continued semi-annual sub-slab and indoor air sampling of this building is recommended for next year when USACE will evaluate the data to determine if there is a need for additional sampling. ES-3

14 The September 21 analytical results for EPA Building 29 indicated detections of PCE concentrations in sub-slab soil gas above the NJDEP VIG screening levels. However, PCE concentrations in the indoor air samples did not exceed the VIG guidelines. The data from the February 211 sampling round did not indicate PCE or TCE concentrations exceeding the NJDEP VIG screening levels. TCE has not been detected in indoor air or soil gas above NJDEP VIG Screening Levels for both indoor air and sub-slab soil gas, respectively since 28 sampling events. Other VOCs were detected in soil gas and indoor air above the screening levels. Due to the continued detections of PCE in soil gas above VIG levels, the continuation of semi-annual monitoring of Building 29 is recommended. The USACE will evaluate the data after a year to determine if there is a need for additional sampling. ES-4

15 TABLE ES-1 AOC 2 SAMPLING RESULTS AND PROPOSED ACTION SUMMARY Area of Concern AOC 2 Building 16 Building 165 Results Summary Data for Building 16 is from March 21 thru November 211 sampling events and shows that the passive venting system is operating as designed. The vent pipe vapor concentrations have been decreasing over time. Sub-slab soil gas: All concentrations in the vent pipes are ten times below the NJDEP VIG screening levels Indoor air: All detected concentrations were below the NJDEP VIG screening levels. Data for Building 165 is from September 21 and February 211 sampling events and shows a decreasing trend in VOC concentrations in the sub-slab soil gas and indoor air. Sub-slab soil gas: PCE and TCE in sub-slab soil gas did not exceed the NJDEP VIG screening levels. Dichlorobenzene (1,4-DCB) in soil gas was detected above NJDEP VIG screening levels during September at one sampling location. No other VOCs exceeded sub-slab soil gas screening levels. Indoor Air: 1,4-DCB and chloroform were detected above NJDEP VIG screening levels at multiple indoor air sample location points. Sample results from the two vapor recovery sampling ports did not have constituents exceeding the NJDEP VIG screening levels. Proposed Action Continue monitoring the building on an annual basis to monitor the effectiveness of the vapor recovery system. After a year, evaluate the data to determine if additional monitoring is needed. Continue monitoring the building on a semiannual basis next year to monitor the effectiveness of the vapor recovery system. After a year, evaluate the data to determine if additional monitoring is needed. Campus Plaza 4 Sub-slab and indoor air analytical results for sampling conducted in September 21, October 21, and February 211. Sub-slab soil gas: PCE, TCE and chloroform concentrations in soil gas were detected above the NJDEP VIG screening levels. Indoor air: TCE, 1,4 DCB, and methylene chloride were detected in indoor air at concentrations above NJDEP VIG screening levels. Continue monitoring the indoor air and sub-slab soil gas for this building for an additional two years. After a year, evaluate the data to determine if additional monitoring is needed. ES-5

16 TABLE ES-2 AOC 6 SAMPLING RESULTS AND PROPOSED ACTION SUMMARY Area of Concern Results Summary AOC Fernwood Avenue A solar-powered sub-slab mitigation system was installed in March 211 therefore, Sub-slab and indoor air analytical results are from April 211 only. Sub-slab soil gas: PCE and TCE were detected at concentrations in sub-slab soil gas greater than NJDEP VIG screening levels at the same sample location. No other VOCs were detected in the sub-slab soil gas Indoor air: Neither TCE nor PCE concentrations were detected in indoor air exceeding the NJDEP VIG screening levels. Chloroform concentrations were detected for indoor air above the NJDEP VIG screening levels. No other VOCs were detected in indoor air samples above their respective screening levels. Proposed Action Continue semi-annual monitoring for Fernwood Ave. The data will be evaluated to determine if additional sampling events are needed. ES-6

17 TABLE ES-3 AOC 8 SAMPLING RESULTS AND PROPOSED ACTION SUMMARY Area of Concern Results Summary AOC 8 EPA Building 1 Sub-slab and indoor air analytical results are from September 21 and February 211 sampling events. Sub-slab soil gas: TCE was the only compound detected in sub-slab soil gas exceeding NJDEP VIG screening levels in September 21. No VOC concentrations exceeded the NJDEP VIG screening levels for subslab soil gas in February 211. Indoor Air: No VOCs exceeded the NJDEP VIG screening levels in the indoor air or ambient samples from the February 211 event. EPA Building 18 Sub-slab and indoor air analytical results are from September 21 and February 211. Sub-slab soil gas: TCE concentrations were detected in sub-slab soil gas exceeding NJDEP VIG screening levels during both sampling events at sampling location 18-SG- 5. Indoor air: No VOC concentrations in indoor air or ambient air exceeded the NJDEP VIG screening levels for both sampling events. Proposed Action Continue semi-annual monitoring next year to confirm proper operation of the remediation system. After a year, the data will be evaluated to determine if monitoring needs to continue. Continued semi-annual sub-slab and indoor air monitoring of this building is recommended for next year (September 211 and February 212) with emphases on insuring that the sub-slab system is operating properly. After a year, the data will be evaluated to determine if monitoring needs to continue. EPA Building 2 Sub-slab and indoor air analytical results are from September 21, October 21, and February 211. Sub-slab soil gas: TCE and PCE were detected above the NJDEP VIG screening levels for soil gas in September 21. No VOC concentrations in soil gas exceeded the NJDEP VIG screening levels samples from February 211. Indoor Air: No VOC concentrations in indoor air exceeded the NJDEP VIG screening levels for both rounds. Continued semi-annual sub-slab and indoor air sampling of this building is recommended for the next year (September 211 and February 212) to confirm that the sub-slab system is operating properly. After a year, the data will be evaluated to determine if monitoring needs to continue. ES-7

18 TABLE ES-3 (CONTINUED) AOC 8 SAMPLING RESULTS AND PROPOSED ACTION SUMMARY Area of Concern AOC 8 EPA Building 25 Results Summary Sub-slab and indoor air analytical results for September 21, October 21, and February 211. Sub-slab soil gas: PCE concentrations were not detected in soil gas exceeding NJDEP VIG screening levels for any of the 3 sampling events. TCE was detected in soil gas exceeding NJDEP VIG screening levels Indoor Air: No VOCs were detected in the indoor air above NJDEP VIG screening levels. Proposed Action Continued semi-annual sub-slab and indoor air sampling of this building is recommended for the next year (September 211 and February 212) with emphases on insuring that the subslab system is operating properly. After a year, the data will be evaluated to determine if monitoring needs to continue. EPA Building 29 Sub-slab and indoor air analytical results for September 21 and February 211. Sub-slab soil gas: Chloroform and PCE concentrations were detected in sub-slab soil gas above the NJDEP VIG screening levels in September. Carbon tetrachloride and chloroform concentrations in soil gas exceeded the NJDEP VIG screening levels in February. Indoor air: Benezene and methylene chloride concentrations in indoor air exceeded NJDEP VIG screening levels. PCE concentrations were detected in the background ambient sample. Sub-slab and indoor air monitoring will continue on a semi-annual frequency for the next year (September 211 and February 212). After a year, the data will be evaluated to determine if monitoring needs to continue. ES-8

19 SECTION 1. INTRODUCTION 1.1 Objective The U.S. Army Corps of Engineers (USACE) retained Weston Solutions, Inc. (Weston ) to evaluate the potential for vapor intrusion into buildings from contaminated groundwater at the Former Raritan Arsenal (former Arsenal) site in Edison, NJ. The objective of this report is: To summarize and evaluate indoor air, sub-slab soil gas, and historical groundwater sampling results at each of the buildings recommended in the Draft Indoor Air Quality Semi-Annual Report #6 (Shaw, August 21); To assess whether a complete exposure pathway exists; and To provide recommendations on the need for further action. This report presents the analytical results for buildings sampled during September 21 through April 211 within Groundwater Areas of Concern (AOCs) 2, 6, and 8. These Groundwater AOCs have exhibited current/historical exceedances of the New Jersey Department of Environmental Protection (NJDEP) Vapor Intrusion Guidance (VIG) groundwater screening levels. As recommended in the Draft Indoor Air Quality Semi-Annual Report #2 (Weston, September 26) and #3 (Weston, July 28) the buildings associated with Groundwater AOC 4 and 1 did not require any further investigation or action; therefore, they are not included in this report. 1.2 The USACE is conducting Remedial Investigation/Feasibility Study (RI/FS) and Remedial Design/Remedial Action (RD/RA) activities at the former Arsenal under the Defense Environmental Restoration Program for Formerly Used Defense Sites (DERP-FUDS). NJDEP provides regulatory oversight for the project. Through these activities, USACE and NJDEP identified Groundwater AOCs for volatile organic compounds (VOCs) at the former Arsenal that required evaluation for indoor air quality (IAQ), as presented in the Draft Final Groundwater Natural Attenuation Report dated July 22 (Weston 22), and more recently in the Indoor Air Quality Evaluation (Steps One through Four) (Weston 25), and the Final Supplemental Groundwater Data Report (Weston, September 26). In a March 23 comment letter concerning the Draft Final Groundwater Natural Attenuation Report (Weston 22), NJDEP approved natural attenuation as a means of addressing remaining groundwater contamination at the site, provided no vapor intrusion pathway existed in buildings located above the plumes. NJDEP requested the USACE to evaluate potential vapor risks at 151 Fieldcrest Avenue (Building 151), 165 Fieldcrest Avenue (Building 165), and other buildings near monitoring well MW-114. Well MW-114 is located within Groundwater AOC 2 and historically has exhibited the highest detected concentrations of VOCs in groundwater at the former Arsenal. Total VOCs in groundwater have been reported up to 13 milligrams per liter (mg/l) in this well (December 2). In May 23, prior to the initiation of the USACE s indoor air program, the property owner at Building 165 conducted indoor air sampling that indicated the presence of tetrachloroethylene (PCE). Follow-up indoor air and sub-slab soil gas samples collected by USACE in June showed 1-1

20 no PCE in indoor air, but did show PCE in the accompanying sub-slab soil gas samples. PCE was also found in one of four sub-slab soil samples collected from beneath Building 165. A subslab depressurization system was subsequently installed jointly by USACE and NJDEP; this system remains in operation. As a result of the findings at Building 165, awareness of the potential for intrusion of VOCs from soil and/or groundwater into indoor air at the former Arsenal was heightened. The NJDEP requested that the USACE evaluate the vapor intrusion pathway for all other Groundwater AOCs at the former Arsenal. In October 24, NJDEP agreed that assessment of the indoor air exposure pathway at the former Arsenal should be performed in accordance with the Approach for Evaluating Potential Indoor Air Quality Impacts, (USACE 24), referred to hereafter as The IAQ Approach. In accordance with the IAQ Approach, the USACE has been evaluating buildings located within 1 feet (ft) of Groundwater AOCs, currently as defined by exceedances of the (current) groundwater screening levels identified in the NJDEP s Vapor Intrusion Guidance (NJDEP 25), referred to hereafter as VIG. The Groundwater AOCs originally identified by the USACE and NJDEP to be evaluated for IAQ were narrowed from seven to three since the primary contaminants of concern (COCs) in groundwater are VOCs, mainly trichloroethylene (TCE) and PCE. Groundwater AOC 2, Groundwater AOC 8, and Groundwater AOC 1 became the focus and were evaluated due to their higher historical concentrations of VOCs in groundwater. In addition, Groundwater AOC 2 and Groundwater AOC 8 include buildings with sensitive receptors (e.g., daycare centers). Subsequent to evaluation of Groundwater AOCs 2, 8, and 1, Groundwater AOCs 4 and 6 were evaluated for the potential of vapor intrusion into indoor air in accordance with Work Plans developed in accordance with the NJDEP s VIG. Each semi-annual report discusses the buildings within the groundwater AOCs which were evaluated and monitored along with the recommendations from USACE. The following is a list of the IAQ reports: Indoor Air Quality Semi-Annual Report (Weston, November 25); Indoor Air Quality Semi-Annual Report #2, (Weston, September 26); Indoor Air Quality Semi-Annual Report #3, (Weston, July 28); Indoor Air Quality Semi-Annual Report #4, (Shaw, April 29); and Indoor Air Quality Semi-Annual Report #5, (Shaw, July 21). The recommendations from the prior reports helped focus the monitoring program. The sixth report (Shaw, August 21) discussed the buildings which are still being evaluated and monitored within Groundwater AOC 2, AOC 6, and AOC 8 from September 29 through March 21. In the Draft Indoor Air Quality Semi-Annual Report #6, (Shaw, August 21) USACE made the following recommendations by groundwater AOC: 1-2

21 Groundwater AOC Fieldcrest Avenue No further action after the completion of the February 21 sampling round; Fieldcrest Avenue Continue semi-annual sampling; and - Campus Plaza 4 Continue semi-annual sampling. Groundwater AOC Fernwood Avenue Passive sample of mitigation system only. Semi-annual sub-slab and indoor air sampling has been completed. Groundwater AOC 8 - Building 1 Continue semi-annual indoor are and sub-slab sampling with an emphases of insuring that sub-slab system is operating properly; - Building 18 Continue semi-annual indoor air and sub-slab sampling with an emphases of insuring that sub-slab system is operating properly; - Building 2 Reduction of quarterly indoor air and sub-slab sampling to a semiannual basis starting in the summer of 21; - Building 25 Continue semi-annual indoor air and sub-slab sampling with an emphases of insuring that sub-slab system is operating properly; and - Building 29 Reduction from quarterly indoor air and sub-slab sampling to a semiannual basis. Report #7 presents the findings of subsequent investigations conducted during the period of September 21 through April 211. Table 1-1 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 following NJDEP Guidelines and the revised November 21 U.S. Department of Defense (DOD) Vapor Intrusion Handbook. 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. 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). 1-3

22 Most buildings often maintain an indoor air pressure that is lower than outdoor air. Under this negative pressure, subsurface soil gas may be drawn to cracks in the basement or slab floor and 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 of the NJDEP VIG, 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 Arsenal establishes the priorities for further investigation of potential IAQ impacts (Figure 1-1). The IAQ Approach, which has been approved 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 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 conceptual model for each Groundwater AOC plume. Step Three: Determine constituents of potential concern (COPCs) for further evaluation by comparing historical groundwater data to Table 2C-GW screening benchmarks. Step Four: Prioritize Groundwater AOC plumes to be evaluated for potential vapor intrusion based on sensitive receptors and historical groundwater data. Expedite evaluation process where groundwater concentrations are 5 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 vapor intrusion at the former Arsenal, if specific Groundwater AOCs and the buildings associated with those AOCs have not yet been evaluated. 1-4

23 The information gathered under Steps One through Four provides 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 vapor intrusion pathway from groundwater to indoor air and evaluate the potential IAQ impacts. If groundwater data indicate potential exceedance of residential indoor air screening benchmarks, then go to Step Six. Step Six: Conduct sub-slab soil gas sampling. Step Seven: Compare soil gas concentrations to the sub-slab soil gas screening benchmarks. Predict concentrations of VOCs in indoor air based on sub-slab 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 Table 2C criteria, this approach was developed prior to publication of the NJDEP VIG. Site-specific data have been compared to the most recent screening levels set forth in the NJDEP VIG. 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 sub-slab 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 sub-slab soil gas samples to document system effectiveness. Step Twelve: Prepare report documenting process and results for the NJDEP. 1-5

24 TABLE 1-1 LIST OF TENANTS AND ADDRESSES FORMER RARITAN ARSENAL, EDISON NJ BUILDINGS TENANT ADDRESS Peppermint Tree Child Care Center 165 Fieldcrest Avenue, Edison, NJ 8837 Celsis Laboratories Group 165 Fieldcrest Avenue, Edison, NJ 8837 Building 165 Rockwell Automation 165 Fieldcrest Avenue, Edison, NJ 8837 Cembre 165 Fieldcrest Avenue, Edison, NJ 8837 Mackay Communications 165 Fieldcrest Avenue, Edison, NJ 8837 Vacant 165 Fieldcrest Avenue, Edison, NJ 8837 Agilysys 274 Raritan Center Parkway, Edison, NJ 8837 Campus Plaza 4 Bareweb 278 Raritan Center Parkway, Edison, NJ 8837 Fabrictex 28 Raritan Center Parkway, Edison, NJ 8837 Federal Business Centers 3 Raritan Center Parkway, Edison, NJ 8837 USEPA Building Woodbridge Avenue, Edison, NJ 8837 USEPA Building Woodbridge Avenue, Edison, NJ 8837 USEPA Buildings USEPA Building Woodbridge Avenue, Edison, NJ 8837 USEPA Building Woodbridge Avenue, Edison, NJ 8837 USEPA Building Woodbridge Avenue, Edison, NJ Fernwood Computershare 118 Fernwood Avenue, Edison, NJ 8837 Computershare- Unoccupied 166 Fernwood Avenue, Edison, NJ 8837 USEPA - United States Environmental Protection Agency K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\Table 1-1 List of Tenants and Addresses of 1

25 SECTION 2. METHODOLOGY 2.1 Sampling Design From September 21 through April 211, USACE collected samples of sub-slab soil gas, ambient air, and indoor air at selected buildings within Groundwater AOCs 2, 6, 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), Tables 2-3 and 2-4 (Groundwater AOC 6), and Tables 2-5 and 2-6 (Groundwater AOC 8) and are based on the NJDEP-approved Approach for Evaluating Potential Indoor Air Quality Impacts (Weston, September 24). Under the IAQ process for the former Arsenal, the decision to sample indoor air is based upon whether concentrations of VOCs in sub-slab soil gas exceed screening levels. The decision to sample sub-slab soil gas is determined by the presence of VOCs in groundwater at concentrations exceeding groundwater screening levels (previously evaluated against U.S. Environmental Protection Agency [EPA] Table 2C values, but currently evaluated against the groundwater screening levels identified in the NJDEP VIG). However, in several cases individual landowners have opted to sample indoor air directly, before sub-slab soil gas or groundwater was fully evaluated by USACE. In those cases, USACE proceeded to sample both sub-slab soil gas and indoor air 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 vapor intrusion concern. The USACE evaluated the remaining buildings by determining what buildings fall within 1 ft of each plume, comparing most recent groundwater concentrations in each plume to the NJDEP Table 1 Generic Vapor Intrusion Screening Levels for Groundwater (NJDEP Table 1-GW), and analyzing sub-slab soil gas below each building potentially affected by DOD-related contaminants of potential concern (COPCs) in groundwater and soil. Methods for each element of this IAQ approach are described in the following subsections. 2.2 Sampling Methods Groundwater Evaluation The evaluation of groundwater has already been completed in the Supplemental Groundwater Data Report (Weston, September 26). The following section provides a summary of the methodology used. The process of identifying COPCs in groundwater has been described in the Draft Indoor Air Quality Investigation Report (Steps 1-4) (Weston 24), and originally consisted of comparing the maximum concentration of VOCs in wells within a groundwater plume to the EPA Table 2c criteria for VOCs to determine if they are exceeded at any 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 is determined that a groundwater plume contains VOCs at concentrations presenting a potential vapor intrusion pathway threat, sub-slab soil gas is sampled from below buildings that are potentially affected by the contamination. The process of evaluating which specific buildings will require sub-slab soil 2-1

26 gas sampling is determined on a building-by-building basis in accordance with the IAQ Approach (Weston 24). Specific methods for groundwater sampling upon which the groundwater data are based have been described in prior reports such as the: Final Site-wide Hydrogeology Report for the Former Raritan Arsenal (Weston 1994); Draft Monitored Natural Attenuation Report for the Former Raritan Arsenal (Weston 22); Final Supplemental Groundwater Data Report (Weston 26); and Draft Groundwater Compliance Monitoring Progress Report for the Former Raritan Arsenal (Weston 211) Sub-slab Soil Gas Sampling Method Once it was determined that a given building required sub-slab soil gas sampling, a work plan was prepared with proposed sampling locations, and was submitted to the NJDEP for approval. Locations were chosen in concurrence with the landowner to avoid interrupting their operations or biasing the sample. Where practical, sample locations were biased to anticipated conservative locations. Given that mounding effects would be more pronounced toward the center of a building, sample locations are generally located away from sidewalls, and also are oriented toward the center of the plume. Permanent sub-slab sampling ports were installed by Weston several sampling events prior to the events presented in this report. The sub-slab soil gas sampling point installation procedure followed by Weston utilized the New Jersey Department of Environmental Protection Vapor Intrusion Guidance Document (NJDEP 25). The first step was to drill a 3/8-inch hole approximately 1 to 2 inches below the concrete slab. Then, the top 1 inch of the hole was overdrilled to a 1-inch diameter. Next, the brass vapor probe was inserted to a point flush with the top of the concrete slab (initial sub-slab sample points were installed prior to the 25 NJDEP VIG, and brass ports were selected in accordance with the Draft NJDEP VIG; subsequent sample ports were installed to be consistent with those installed during earlier phases of investigation). Quick expansive Portland cement was used to seal the annular space between the probe and the slab and allowed to cure for 3 minutes to secure the vapor probe in place. Sampling of secured ports involved a T setup made of Teflon tubing, a shut-off valve and three-way T was attached to the vacuum pump at one end and the SUMMA canister at the other. A middle line was connected to the sample port. While the valve allowing soil gas to flow from the sample port to SUMMA canister remained closed, the portable vacuum pump purged the vapor probe. After two minutes, the pump was shut off, and the shut-off valve and the SUMMA canister valve were opened allowing the sample to be collected. Sub-slab soil gas samples were collected over a one-hour (approximate) period. Once the sample was collected, the SUMMA canister valve was closed and the sample port was capped. Prior to sampling at each sub-slab sampling ports a leak test was performed to determine the seal of the sub slab sampling port. A leak test setup included attaching Teflon tubing to the sub-slab sampling port and placing a five gallon bucket with 2 holes on the bottom over the sub-slab sampling port. The Teflon tube was pulled out of one of the holes in the bucket. Helium was then pumped into the tubing for a period of 5-1 seconds. Helium was then turned off and using 2-2

27 a helium detector, helium results were recorded from the tube and from the second hole in the 5 gallon bucket to determine if there was a leak in the sub-slab sampling port. Results of the Subslab leak test results are presented in Appendix A. In cases where the vapor probe may have come loose from the surrounding cement, Weston will repair prior to the next sampling event Building Survey Method In the event that sub-slab soil gas concentrations indicated a potential vapor intrusion pathway, indoor air sampling was performed consistent with the Approach for Evaluating Potential Indoor Air Quality Impacts (USACE 24). However, prior to indoor air sampling it was necessary to evaluate each building proposed for sampling to determine if there were facility conditions that could affect sampling results. Weston conducted an inspection of each building being investigated for potential indoor air vapor intrusion to determine potential sampling locations, as well as chemical use within each building. Weston 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 the site walkthrough for each building. The Form was completed for each building space being evaluated in order 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, gasoline storage, and/or gasoline-powered equipment. The Form includes a list of the products identified during the inspection for indoor contaminants. If available, material safety data sheets (MSDSs) were provided by some tenants for the chemicals observed. Weston identified potential sample locations for indoor air and sub-slab soil gas sampling during the site inspection. The sample locations and sample collection information are also identified on the Form. Prior to subsequent sampling events, Weston reevaluated conditions for new products and chemicals being used or stored by building tenants that could potentially impact the indoor air quality results, and updated the Form with the date and observations Indoor Air Sampling Method If appropriate, indoor air sampling was conducted with locations selected in advance and approved by NJDEP. Indoor air samples were collected over a 24-hour (approximate) period using evacuated stainless-steel SUMMA canisters equipped with appropriate pre-programmed flow-control valves (regulators). The indoor samples were collected from the breathing zone height (3 ft to 5 ft). All windows and overhead doors were closed to the extent possible. 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 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 sub-slab soil gas and indoor air samples were collected concurrently, the indoor air samples were collected immediately prior to collection of the sub-slab soil gas samples. This was done to reduce the potential for contaminants that may be present in the sub- 2-3

28 slab soil gas from impacting the indoor air samples, which have analytical detection limits an order of magnitude less than those obtainable for sub-slab soil gas samples Air Sampling Method ambient air samples were collected for comparison with indoor air sampling results at each building in order to interpret whether the results from each building were potentially related to ambient sources outside of the building. air samples were collected over a 24-hour period using evacuated stainless-steel SUMMA canisters equipped with appropriate preprogrammed flow-control valves (regulators). One background sample was collected while indoor air samples were being collected at each building. The background air sample for each building was collected at ground level. The ground level background air samples were collected from the breathing zone height (3 ft to 5 ft) and in a location away from pedestrian and vehicle traffic. The results of the background samples are compared to NJDEP Residential and Non- Residential Vapor Intrusion Guidelines so that results from indoor air sampling are viewed in an appropriate context reflective of the localized air quality Deviations The only deviations to the original scope of work occurred during the September 21 sampling event. Once the subcontracted laboratory received the samples, they realized there were five SUMMA canister malfunctions. These malfunctions can be attributed to improper valve closure or equipment failure. The two indoor air locations (CP4-1 and 2-3) were resampled on October 7 through October 8, 21. The sub-slab soil gas locations (CP4-SG-1, 25-SG-11, and 29-SG-9) were resampled on October 8, 21. One duplicate sample was recollected for each sampling matrix Meteorological Data Meteorological data was provided by National Oceanic and Atmospheric Administration s (NOAA) National Climatic Data Center located in Mount Holly, NJ. Data was collected by the National Weather Service for the Trenton weather station. This location was considered to be a representative and reliable collection point for the entire Raritan Arsenal project area. The meteorological data were included in the indoor air survey forms, and in data tables included in the introductory sections for each AOC 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. During the two sampling events duplicate samples were collected for both sub-slab soil gas and indoor air quality samples, field blank samples were not collected. In the September-October 21 sampling events a total of 1 duplicate indoor air and 1 duplicate sub-slab soil gas samples were collected. During the February-April 211 sampling event 1 indoor air and nine sub-slab soil gas samples were collected. IAQ samples were collected by collocating two SUMMA canisters and turning them on and off at the same time. Sub-slab duplicate samples were collected by connecting a T valve to the sub-slab sampling set up allowing for two samples to be collected from one sample port at the same time. 2-4

29 2.2.9 Sample Handling and Shipping Cleaned and certified 6-liter SUMMA canisters and regulators were obtained from a New Jersey certified laboratory as outlined in the Indoor Air VOC Sampling Analysis Requirements (NJDEP, April 23) and the NJDEP Vapor Intrusion Guidelines (NJDEP 25). After sampling, all SUMMA canisters were packaged in a box and transported to the selected New Jersey certified laboratory. The certified laboratory used for samples presented in this report was Accutest Labrotories, Dayton, New Jersey Data Validation Procedures Analytical data review includes a review of the data package materials to check whether the data entry, transcription and calculation/reduction were properly performed. The sample data is reviewed to verify that holding times were met and the laboratory QC sample data was appropriate and met QC limits. Data verification was performed by Weston to provide for data package completeness, correctness, and compliance against the analytical method procedural and contractual requirements of the project. The chains of custody and internal chains of custody forms were reviewed to verify proper sample receipt, storage, sample preparation, and sample analysis. A review is completed of the instrument performance criteria, calibration results, detection limits, surrogate spike recovery and laboratory control recovery data, matrix spike results, internal standard responses, QC blank contamination results, as well as extraction and analytical run logs to verify proper sample preparation and analysis conditions. Deviations from the Quality Assurance Project Plan (QAPP) and project laboratory QA Plan and SOPs are documented, often in the form of a case narrative included with the data package. Problems experienced during sample analysis are also identified and presented in the case narrative of the analytical 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 5%, the analyte results will be estimated (J) for both samples. If the analyte is detected in only one sample, it will also be estimated. The field sampling precision could not be assessed for indoor air samples as the duplicate pair samples were collected in two separate Summa canisters. They must be treated as co-located samples instead of field duplicate samples. 2.3 Screening Benchmarks Air sampling analytical data were compared to applicable regulatory screening levels to assess potential adverse impacts. These regulatory levels included: 1. NJDEP (March 27) Residential and Non-Residential Vapor Intrusion Guidance Screening Levels for Sub-slab Soil Gas; 2. NJDEP (March 27) Residential and Non-Residential Vapor Intrusion Guidance for Indoor Air; 2-5

30 3. EPA Generic screening benchmarks for Target Indoor Air Concentrations and Shallow Soil Gas as provided in the Draft Guidance for Evaluating the Vapor Intrusion to Indoor Air Pathway from Groundwater and Soils (EPA, November 22) (Indoor Air and Soil Gas, respectively, predominantly for evaluation of historic data); and 4. DOD (January 29 and Revised November 21) Vapor Intrusion Handbook Risk- Based Residential Air Concentrations for Indoor Air. The following is a brief discussion of each screening benchmark used, including assumptions and applicability. None of these benchmarks are promulgated regulatory criteria NJDEP Vapor Intrusion Guidelines for Indoor Air and Sub-slab Soil Gas In October 25, the NJDEP published the final VIG. As the title implies, the VIG is intended as a guidance document, and is not purely a regulatory requirement. However, while the NJDEP will consider alternative methods for vapor intrusion (VI) investigations, they generally require that the analytical results of any VI investigation be compared to the (current) benchmarks included in Table 1 (NJDEP Master Table; Generic Vapor Intrusion Screening Levels, originally issued October 25) of the VIG. Table 1 consists of benchmark concentrations for a number of COPCs as both residential and nonresidential concentrations. These concentrations will be revised periodically as the state of the science of VI changes over time, the most recent revision being in March 27. In this report, the tables of results from the current sampling events and tables containing comparison of historical data from previous sampling rounds have highlighted exceedances of the NJDEP VIG benchmarks. These tables are specific to individual buildings within each AOC, and the specific table numbers are referenced within the text in association with each building EPA Generic Screening Benchmarks for Target Indoor Air and Shallow Soil Gas Concentrations EPA published the Draft Guidance for Evaluating the Vapor Intrusion to Indoor Air Pathway from Groundwater and Soils Vapor Intrusion (EPA 22). Target screening benchmark soil gas and indoor air concentrations are published in this guidance and are intended to provide a screening tool for determining whether direct indoor air sampling is appropriate. They are based on potential migration of VOCs from groundwater through soils and into the interior of a residence or office building. The screening numbers for each chemical equate to an indoor air concentration that is protective of a residential exposure (3 years, 35 days/year, 24 hours/day) based on defined target risk or hazard quotient levels. The target soil gas and indoor air levels were based on noncancer (N) or cancer (C) effects at a Target Risk (TR) of 1E-6 or a Target Hazard Quotient (THQ) of DOD Vapor Intrusion Handbook Risk-Based Residential Air Concentrations for Indoor Air The DOD published the DOD Vapor Intrusion Handbook as a tool to assist DOD installations with evaluating and investigating the vapor intrusion pathway at DOD sites conducting response actions under the DERP. Table B-1 identifies chemicals that are sufficiently volatile and toxic and as a result need to be considered for the vapor intrusion pathway. Sufficiently volatile is 2-6

31 defined as having a Henry s Law Constant greater than 1-5 atm m 3 /mol. A chemical is considered sufficiently toxic if it s pure component vapor concentration results in an incremental lifetime cancer risk greater than 1-6 or a non-cancer hazard index greater than 1 (in some cases both). Meeting these two criteria is an initial indicator that a given chemical in the subsurface may present potentially unacceptable indoor air inhalation risks when complete exposure pathways exist. The approach used to develop Table A-1 is similar to the method used to develop the table documented in Appendix D of EPA s 22 Draft Guidance for Evaluating the Vapor Intrusion to Indoor Air Pathway from Groundwater and Soils. (DOD 29). COPCs for each Groundwater AOC were evaluated by comparing their maximum detected concentrations to the screening benchmarks provided in Table 1 of NJDEP VIG. The generic screening benchmark groundwater concentrations in NJDEP Table 1 reflect reasonable worstcase conditions. The USACE has identified the most recent groundwater concentrations at the same locations where maximum concentrations were detected. Sub-slab soil gas sample results were compared to the NJDEP, and indoor air sample results were compared directly with the target indoor air screening benchmarks. Remedial decisions are being made based on comparison of sample concentrations to screening benchmarks presented in the NJDEP VIG. However, the EPA VI screening benchmarks continue to be presented for consistency sake, since the former Arsenal investigation began prior to publication of the VIG and the EPA Table 2c screening benchmarks were used at the onset of the sampling program. On January 15, 29 the EPA signed a significant memorandum, Interim Recommended TCE Toxicity Values to Assess Human Health Risk and Recommendations for the Vapor Intrusion Pathway Analysis. They key element of the memorandum is the establishment of an interim action level of TCE in indoor residential air: 1.2 micrograms per cubic meter (ug/m 3 ), based upon California EPA s inhalation unit risk value. Currently NJDEP has not yet accepted this proposed interim action level. 2-7

32 TABLE 2-1 SUBSLAB SOIL GAS SAMPLE LOCATION SUMMARY GROUNDWATER AOC 2 SEPTEMBER-OCTOBER 21 AND FEBRUARY 211 FORMER RARITAN ARSENAL, EDISON NJ AOC Building Location Location ID Duplicate Date Sample Type Analysis Peppermint Tree Child Care Center Cembre 165-SG SG-2 1-DUP-SG-1 9/22/21 TO-15 Soil Gas 2-DUP-SG-2 2/25/211 TO /22/21 TO-15 Soil Gas - - 2/25/211 TO-15 Building 165 Trueform Corporation 165-SG-3 1-DUP-SG-2 9/22/21 TO-15 Soil Gas 2-DUP-SG-8 2/25/211 TO-15 Celcis Laboratory Group 165-SG /22/21 TO-15 Soil Gas - - 2/25/211 TO-15 AOC 2 Shed in Rear of 165 Fieldcrest Shed on Side of 165 Fieldcrest 3 RCP, Warehouse West Wall 3 RCP, Warehouse Center East 165-VR VR-2 CP4-SG-1 CP4-SG /22/21 TO-15 Vapor Recovery - - 2/25/211 TO /22/21 TO-15 Vapor Recovery - - 2/25/211 TO /8/21 TO-15 Soil Gas - - 2/25/211 TO /22/21 TO-15 Soil Gas - - 2/25/211 TO-15 Campus Building 4 28 RCP - Bareweb 278 RCP - Fabrictex 274 RCP - Agilysys CP4-SG-3 CP4-SG-4 CP4-SG-5 1-DUP-SG-3 9/22/21 TO-15 Soil Gas - - 2/25/211 TO /22/211 TO-15 Soil Gas - - 2/25/211 TO-15 1-DUP-SG-4 9/22/21 TO-15 Soil Gas 2-DUP-SG-1 2/25/211 TO-15 Notes: AOC - Area of Concern RCP - Raritan Center Parkway CP - Campus Plaza TO-15 - Method used in analysis of samples SG - Subslab Soil Gas VR - Vapor Recovery K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\Table 2-1 and 2-2 IAQ Sample Summary Table AOC of 1

33 TABLE 2-2 INDOOR AIR SAMPLE LOCATION SUMMARY GROUNDWATER AOC 2 SEPTEMBER-OCTOBER 21 AND FEBRUARY 211 FORMER RARITAN ARSENAL, EDISON NJ AOC Building Location Location ID Duplicate Date Sample Type Analysis Rockwell Automation Mackay Communications Cembre 165-IA IA IA-3 1-DUP-IA-1 9/22/21 TO-15 Indoor Air - - 2/25/211 TO /22/21 TO-15 Indoor Air 2-DUP-IA-5 2/25/211 TO-15 2-DUP-IA-2 9/22/21 TO-15 Indoor Air - - 2/25/211 TO-15 Building 165 Trueform Corporation 165-IA /22/21 TO-15 Indoor Air 2-DUP-IA-1 2/25/211 TO-15 Celsis Laboratory Group 165-IA /22/21 TO-15 Indoor Air - - 2/25/211 TO-15 Peppermint Tree Child Care Center 165-IA /22/21 TO-15 Indoor Air - - 2/25/211 TO-15 AOC 2 Peppermint Tree Child Care Center 165-IA /22/21 TO-15 Indoor Air 2-DUP-IA-6 2/25/211 TO-15 Ambient Air Sample 165-BG /22/21 TO /25/211 TO-15 3 RCP FBC Engineering Office Area 3 RCP FBC Engineering Office Area CP4-IA-1 CP4-IA /8/21 TO-15 Indoor Air - - 2/25/211 TO-15 1-DUP-IA-3 9/22/21 TO-15 Indoor Air - - 2/25/211 TO-15 Campus Building 4 28 RCP Bareweb Office Area CP4-IA /22/21 TO-15 Indoor Air 2-DUP-IA-7 2/25/211 TO RCP Fabrictex Record Keeping Area CP4-IA /22/211 TO-15 Indoor Air 2-DUP-IA-4 2/25/211 TO RCP Agilysys Office Area Ambient Air Sample CP4-IA-6 CP4-BG-1 1-DUP-IA-4 9/22/21 TO-15 Indoor Air - - 2/25/211 TO /22/21 TO /25/211 TO-15 Notes: AOC - Area of Concern FBC- Federal Business Center RCP - Raritan Center Parkway TO-15 - Method used in analysis of samples CP - Campus Plaza IA - Indoor Air BG - Backround K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\Table of 1

34 TABLE 2-3 SUBSLAB SOIL GAS SAMPLE LOCATION SUMMARY GROUNDWATER AOC 6 APRIL 211 FORMER RARITAN ARSENAL, EDISON NJ AOC Building Location Location ID Date Sample Type Analysis Computershare 12FERN-SG-1 4/29/211 Soil Gas TO-15 AOC Fernwood Avenue Computershare 12FERN-SG-2 4/29/211 Soil Gas TO-15 Computershare 12FERN-SG-3 4/29/211 Soil Gas TO-15 Computershare 12FERN-SG-4 4/29/211 Soil Gas TO-15 Vacant/Computershare, Warehouse 12FERN-SG-5 4/29/211 Soil Gas TO-15 Notes: AOC - Area of Concern TO-15 - Method used in analysis of samples SG - Subslab Soil Gas K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\Table 2-3 and 2-4_AOC 6 Sample Summary Log Page 1 of 1

35 TABLE 2-4 INDOOR AIR SAMPLE LOCATION SUMMARY GROUNDWATER AOC 6 APRIL 211 FORMER RARITAN ARSENAL, EDISON NJ AOC Building Location Location ID Date Sample Type Analysis Computershare 12FERN-1 4/29/211 Indoor Air TO-15 Computershare 12FERN-2 4/29/211 Indoor Air TO-15 AOC Fernwood Avenue Notes: AOC - Area of Concern TO-15 - Method used in analysis of samples Computershare 12FERN-3 4/29/211 Indoor Air TO-15 Computershare 12FERN-4 4/29/211 Indoor Air TO-15 Vacant/Computershare, Warehouse 12FERN-5 4/29/211 Indoor Air TO-15 Ambient Air Sample 12FERN-6 4/29/211 TO-15 South office area outside of Room FERN-7 4/29/211 Indoor Air TO-15 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\Table 2-3 and 2-4_AOC 6 Sample Summary Log Page 1 of 1

36 TABLE 2-5 SUBSLAB SOIL GAS SAMPLE LOCATION SUMMARY GROUNDWATER AOC 8 SEPTEMBER-OCTOBER 21 AND FEBRUARY 211 FORMER RARITAN ARSENAL, EDISON NJ AOC Building Location Location ID Duplicate Date Sample Type Analysis Randy Braun (MAB)'s Cage 29-SG /24/21 TO-15 Soil Gas 2-DUP-SG-4 2/23/211 TO-15 Lockheed Martin's Cage 29-SG /24/21 TO-15 Soil Gas - - 2/23/211 TO /24/21 TO-15 Griffin's Service Warehouse 29-SG-4 Soil Gas 2-DUP-SG-7 2/23/211 TO-15 USEPA Building /24/21 TO-15 Kitchen/Office Area 29-SG-6 Soil Gas - - 2/23/211 TO-15 Extraction Lab 29-SG-9 1-DUP-SG-5 1/8/21 TO-15 Soil Gas 2-DUP-SG-6 2/23/211 TO-15 Flourescent Microscopy Lab 29-SG /24/21 TO-15 Soil Gas - - 2/23/211 TO-15 Training Center 25-SG-1 1-DUP-SG-6 9/24/21 TO-15 Soil Gas - - 2/23/211 TO-15 AOC 8 Bay B 25-SG /8/21 TO-15 Soil Gas - - 2/23/211 TO-15 USEPA Building 25 Bay B 25-SG /24/21 TO-15 Soil Gas 2-DUP-SG-3 2/23/211 TO-15 Bay A 25-SG /24/21 TO-15 Soil Gas - - 2/23/211 TO-15 Small Conference Room 25-SG /24/21 TO-15 Soil Gas 2-DUP-SG-9 2/23/211 TO-15 USEPA Building 2 By the Nurse's Desk 2-SG-2 1-DUP-SG-7 9/24/21 TO-15 Soil Gas - - 2/23/211 TO-15 USEPA Building 18 USEPA Building 1 Office Area Office Area 18-SG-4 1-SG /24/21 TO-15 Soil Gas - - 2/23/211 TO-15 1-DUP-SG-9 9/24/21 TO-15 Soil Gas 2-DUP-SG-5 2/23/211 TO-15 Office Area Office Area 18-SG-5 1-SG-4 1-DUP-SG-8 9/24/21 TO-15 Soil Gas 2-DUP-SG-1 2/23/211 TO-15 1-DUP-SG-1 9/24/21 TO-15 Soil Gas - - 2/23/211 TO-15 Notes: AOC - Area of Concern USEPA - United States Environmental Protection Agency TO-15 - method used in analysis of samples SG - Subslab Soil Gas K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\Table 2-5 and 2-6 IAQ Sample Summary AOC of 1

37 TABLE 2-6 INDOOR AIR SAMPLE LOCATION SUMMARY GROUNDWATER AOC 8 SEPTEMBER-OCTOBER 21 AND FEBRUARY 211 FORMER RARITAN ARSENAL, EDISON NJ AOC Building Location Location ID Duplicate Date Sample Type Analysis USEPA Building 29 USEPA Building 25 Randy Braun (MAB)'s Cage Lockheed Martin's Cage Griffin's Service Warehouse Stockroom Kitchen/Office Area Extraction Lab Flourescent Microscopy Lab Ambient Air Sample Training Center Bay B Bay B 29-IA-1 29-IA-2 29-IA-4 29-IA-6 29-IA-9 29-IA BG-1 25-IA-1 25-IA-2 25-IA /24/21 TO-15 Indoor Air 2-DUP-IA-8 2/23/211 TO /24/21 TO-15 Indoor Air - - 2/23/211 TO /24/21 TO-15 Indoor Air - - 2/23/211 TO /24/21 TO-15 Indoor Air - - 2/23/211 TO-15 1-DUP-IA-5 9/24/21 TO-15 Indoor Air 2-DUP-IA-2 2/23/211 TO /24/21 TO-15 Indoor Air - - 2/23/211 TO /24/21 TO /23/211 TO-15 1-DUP-IA-6 9/24/21 TO-15 Indoor Air - - 2/23/211 TO /24/21 TO-15 Indoor Air 2-DUP-IA-9 2/23/211 TO /24/21 TO-15 Indoor Air - - 2/23/211 TO-15 AOC 8 Bay B 25-IA /24/21 TO-15 Indoor Air - - 2/23/211 TO-15 Ambient Air Sample 25-BG /24/21 TO /23/211 TO-15 USEPA Building 2 By the Nurse's Desk Bookcase in Center Ambient Air Sample Office Area 2-IA-2 2-IA-3 2-BG-1 18-IA-4 1-DUP-IA-7 9/24/21 TO-15 Indoor Air - - 2/23/211 TO /8/21 TO-15 Indoor Air 2-DUP-IA-3 2/23/211 TO /24/21 TO /23/211 TO /24/21 TO-15 Indoor Air - - 2/23/211 TO-15 USEPA Building 18 Office Area 18-IA-5 1-DUP-IA-8 9/24/21 TO-15 Indoor Air - - 2/23/211 TO-15 Office Area 18-IA /24/21 TO-15 Indoor Air - - 2/23/211 TO-15 USEPA Building 1 Ambient Air Sample Office Area Office Area Ambient Air Sample 18-BG-1 1-IA-3 1-IA-4 1-BG /24/21 TO /23/211 TO-15 1-DUP-IA-9 9/24/21 TO-15 Indoor Air 2-DUP-IA-1 2/23/211 TO-15 1-DUP-IA-1 9/24/21 TO-15 Indoor Air - - 2/23/211 TO /24/21 TO /23/211 TO-15 Notes: AOC - Area of Concern USEPA - United States Environmental Protection Agency TO-15 - Method used in analysis of samples BG - Backround IA - Indoor Air K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\Table 2-5 and 2-6 IAQ Sample Summary AOC of 1

38 SECTION 3. SAMPLING RESULTS FOR GROUNDWATER AREA OF CONCERN 2 This section focuses on sampling results for indoor air and sub-slab soil gas collected in September 21, October 21, and February 211 from two buildings evaluated within Groundwater AOC 2. Results are presented by building within the Groundwater AOC. Prior to the discussion of the sub-slab soil gas/indoor air results, a description of historic groundwater contaminant concentrations is presented. The plume boundaries, as revised per the Supplemental Groundwater Data Report (Weston, September 26), defined the extent of the groundwater plume necessary to identify what buildings required evaluation for potential vapor intrusion. Per the recommendations from the Draft Indoor Air Quality Semi-Annual Report #6 (Shaw, August 21), two buildings are still being evaluated and/or monitored for vapor intrusion issues in AOC 2. The buildings evaluated are: 165 Fieldcrest Avenue; and Campus Plaza 4. Building 151 was not sampled in September 21 or February 211 since it was agreed upon with NJDEP to only collect sub-slab soil gas in two monitoring events over the two years. This was completed in the winter of Overview of Groundwater AOC 2 Results Groundwater AOC 2 Groundwater AOC 2 is located within the north central portion of the former Arsenal, beginning near Building 256 in Area 18C (previously identified and remediated source area). The site-wide groundwater investigation redefined the plume boundary (Supplemental Groundwater Data Report, September 26). The historic constituents of concern in Groundwater AOC 2 are VOCs such as TCE, PCE, and cis-1,2-dichloroethene (cis-1,2-dce), among others, as described in the Final Site-Wide Hydrogeology Report (Weston 1996) and the 22 Final Groundwater Natural Attenuation Report (NAR). Current constituents of concern for Groundwater AOC 2 are cis-1,2-dce, PCE, TCE, vinyl chloride, and total-1,2-dichloroethene (total-1,2-dce) as described in the 25 Draft Supplemental Groundwater Data Report. Groundwater analytical data for overburden monitoring wells and direct-push samples from 1994 to 27 were reviewed and compared to screening levels presented in Table 1 of NJDEP s Vapor Intrusion Guidance (October 25, updated March 27) to characterize the COPCs in Groundwater AOC 2. Table 3-1 provides these data for all VOCs that have historically been detected in any of the groundwater samples collected from within the bounds of Groundwater AOC 2. Those VOCs that are considered COPCs for Groundwater AOC 2 are highlighted on Table 3-1 through the use of shading. Specifically, current constituents of concern for Groundwater AOC 2 are TCE, total-1, 2-DCE, PCE, cis-1,2-dce, and vinyl chloride. The current COPC list is based on the most recent concentrations detected in groundwater samples collected from the location with the historic highest concentration in Groundwater AOC 2. The historic constituents of concern in Groundwater AOC 2 are TCE, total-1,2-dce, PCE, cis-1,2-3-1

39 DCE, vinyl chloride, 1,1,2-trichloroethane (1,1,2-TCA), benzene, and chloroform as shown in Table 3-1. Benzene is on the COPC list for Groundwater AOC 2 but is considered to be unrelated to historic DOD activities. Benzene was detected during the second quarter (October 1998) sampling at MW-126; its historic highest concentration was detected in MW-13 during the remedial investigation activities performed in November The detection of benzene in MW-126 indicates an unknown non-dod source of contamination in the southern portion of Groundwater AOC 2. The VOC concentrations in groundwater at and near the source area in Groundwater AOC 2 historically were the highest encountered in the former Arsenal, exceeding the NJDEP Groundwater Quality Standards (GWQS) for TCE, PCE, and vinyl chloride. However, the main source of contamination (Building 256 underground storage tank [UST] system and leach field) was remediated in 1998 by removal of approximately 2,45 cubic yards of contaminated soils, as approved by the NJDEP. USACE conducted additional remedial activities from August to December 22, when approximately an additional 3,5 cubic yards of contaminated soil were removed from the Area 18C-Building 265 Ramp Area, in the immediate vicinity of the earlier source removal, but from deeper within the subsurface. Monitoring well MW-114 is located immediately down gradient of the former source area and up gradient of Buildings 151 and 165. Since the groundwater sampling event following the first removal action, the total VOC concentration in groundwater at this well has decreased by two orders of magnitude. Due to the VOC concentrations detected in Groundwater AOC 2, IAQ sampling has been conducted at buildings within 1 feet of the groundwater plume (further discussed below) Sub-slab Soil Gas A round of sub-slab soil gas samples was collected at the buildings being evaluated for vapor intrusion in September 21 and February 211 sampling events. The table below summarizes the number of sub-slab soil gas samples collected during this period at each building. Building Building 165 Sub-Slab Soil Gas Samples* Sampling Date Sampling Round 6 September 21 Seventeenth Round 6 February 211 Eighteenth Round 6 September 21 Thirteenth Round Campus Plaza 4 *Including duplicate samples. 1 October 21 Thirteenth Round 5 February 211 Fourteenth Round Results of the sub-slab soil gas analyses for VOCs below buildings in Groundwater AOC 2 are discussed building by building in the following subsections of this report. Shaded values in the tables indicate exceedances of the NJDEP VIG residential screening levels, whereas bolded and shaded values indicate exceedances of the NJDEP VIG non-residential sub-slab soil gas screening levels. TCE and PCE exceeded the VIG screening levels in sub-slab soil gas during the 3-2

40 current sampling events in Campus Plaza 4. There were no exceedances detected above NJDEP VIG residential screening level within 165 Fieldcrest. Per the IAQ approach, and consistent with the NJDEP VIG, indoor air samples were collected from all the buildings sampled in AOC 2 in conjunction with the sub-slab soil gas sampling Building Survey Prior to collection of indoor air samples, a NJDEP Building Survey and Sampling Form was completed for each tenant space from/under which samples were being collected in each building under evaluation for vapor intrusion. The buildings within Groundwater AOC 2 are primarily used as office space combined with attached warehouses. 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 may not necessarily constitute significant potential VOC sources. File reviews, interviews, or inspections were conducted only in tenant spaces where sub-slab soil gas and indoor air samples were collected. Additional VOC sources may be associated with those tenant spaces. A review of publicly available NJDEP and local government files indicates that several industries are present (or have been present since 1963 when the Army sold the property) within Groundwater AOC 2. These include American Grocery Company, Compac Industries, Inc., Clayton Environmental/Bureau Veritas, General Cable Company, Salwen Paper Company, IT Corporation, and ML Systems. According to the public files reviewed, each of these facilities presently stores, or has stored in the past, compounds also present in the Groundwater AOC 2 plume. Furthermore, Inland Container Corporation (diesel), American Grocery Company (gasoline and diesel), and Compac Industries, Inc. (toluene) have all had confirmed past releases of these compounds to the environment Indoor Air In September 21 and February 211, USACE collected two rounds of indoor air samples at Buildings 165 Fieldcrest and Campus Plaza 4. The table below summarizes the number of indoor air samples collected during this period at each building. Building Building 165 Indoor Air Samples Ambient Air Samples Sampling Date Sampling Round 9 1 September 21 Seventeenth Round 1 1 February 211 Eighteenth Round 6 1 September 21 Thirteenth Round Campus Plaza 4 *Including duplicate samples. 1 October 21 Thirteenth Round 7 1 February 211 Fourteenth Round 3-3

41 Results of the indoor air and background ambient air analyses for VOCs in the buildings within Groundwater AOC 2 are discussed in the following subsections of this report. Shaded values in the tables indicate exceedances of the NJDEP VIG residential screening levels, whereas bolded and shaded values indicate exceedances of the NJDEP VIG non-residential indoor air screening levels. Some of the compounds exceeding the screening levels in indoor air and sub-slab soil gas samples collected during the current sampling events included, chloroform, methylene chloride, 1,4-dichlorobenzene, TCE, and PCE. The following discussion focuses on soil gas and indoor air results on a building-by-building basis within Groundwater AOC Meteorological Data Meteorological data for the September 21 and February 211 sampling event at AOC 2 buildings was downloaded from National Climatic Data Center consistent with guidance provided in the NJDEP VIG. The data was taken from the Local Climatological Data (LCD) for the National Weather Service Mount Holly, NJ. The average meteorological parameters collected for the dates that AOC 2 buildings were sampled are summarized below. See Appendix A for the complete meteorological data. Dates Sampled Temperature Range Min-Max ( F) Barometric Pressure Station Average (Inches) Precipitation (Inches) Relative Humidity Average (%) September 21 9/22/ /23/ October 21 1/7/ /8/ February 211 2/24/ /25/ * Trace amount 3-4

42 CONTAMINANTS OF POTENTIAL CONCERN (COPCs) (1)(2) - GROUNDWATER AOC 2 FORMER RARITAN ARSENAL Comparison of Maximum Groundwater Concentrations by Constituent Using NJDEP's Subsurface Vapor Intrusion Guidance Compared January 212 Table 2C USEPA Table 1 Constituent Screening Level NJDEP Groundwater Maximum Most Recent for Groundwater 3 Screening Levels 4 Sample Location Concentration Sample Date Concentration 5 Sample Date (ug/l) (ug/l) (ug/l) (ug/l) 1,2-DICHLOROETHANE 5 2 MW-35D 3 6/3/28 1 4/22/21 CHLOROETHANE 28, 4 MW-36D 4.4 J 12/9/29 ND 4/22/21 TETRACHLOROETHYLENE 5 1 MW /29/ /9/27 TRICHLOROETHYLENE 5 1 MW /29/ /9/27 VINYL CHLORIDE 2 1 MW-114A 75 9/17/ /23/21 1,1-DICHLOROETHENE MW-33S 2.2 J 8/4/29 ND 4/22/21 2-BUTANONE 44, 2,7, MW-33S 16 8/4/29 ND 4/22/21 ACETONE 22, 1,9, MW-35S 16 8/4/29 ND 4/22/21 ACRALDEHYDE 4 NLE 6 MW-35D 33 12/1/ /1/29 BENZENE 5 15 MW-32S 3.7 3/12/29.66 J 4/23/21 CARBON DISULFIDE MW-35S 4.5 8/4/29 ND 4/22/21 CHLOROFORM 8 7 MW-81A 15 6/5/ /5/28 CHLOROMETHANE 7 24 MW-114A 8.7 9/17/29 ND 4/23/21 CIS-1,2-DICHLOROETHENE MW-114A 17 3/12/ /23/21 ETHYLACETATE 56, NLE 6 MW-34D 24 12/9/ /9/29 ETHYLBENZENE 7 61, MW-114A 1 4/23/21 1 4/23/21 METHYLENE CHLORIDE MW /11/29 ND 4/21/21 MTBE 12, 78 MW /9/ /9/27 TOLUENE 1,5 31, MW-114A /9/ /23/21 TRANS-1,2-DICHLOROETHENE 18 3 MW-33S 13 9/17/29 ND 4/22/21 XYLENES (TOTAL) 7 22, 7, MW-114A 3 4/23/21 3 4/23/21 NOTES: 1 COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 ug/l - micrograms per liter of EPA's November 22 "Draft Guidance for Evaluating the Vapor Intrusion to Indoor Air Pathway from Groundwater and Soils". For purposes of J - Estimated Value this report, COPCs are those compounds detected in groundwater at concentrations greater than NJDEP VIG groundwater screening levels. NLE - No level established 2 Only monitoring wells and shallow groundwater samples within 1 feet of plume and from 25 to present used to create COPC list ND - Not Detected 3 From EPA's November 22 "Draft Guidance for Evaluating the Vapor Intrusion to Bolded and Shaded - Exceedance of NJDEP Table 1 Screening Level Indoor Air Pathway from Groundwater and Soils". 4 NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March Most recent concentration at location where maximum concentration was detected. 6 Screening levels are unavailable for seven of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" document. 7 Groundwater screening level listed represents a total xylene concentration, not individual isomers. TABLE 3-1 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\Table 3-1 AOC2_COPC PAGE 1 of 1

43 Fieldcrest Avenue Building 165 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. The building consists of warehouse and office space. During the September 21 sampling event, the building was occupied by six tenants but in February the building was occupied by five tenants. Building 165 is surrounded by a parking lot with a small landscaped lawn area. The September 21 and February 211 investigation activities included sub-slab soil gas, vapor recovery system, and indoor air sample collection Prior Investigations Building 165 is located in proximity to the 18C Ramp Area, a soil area of concern located on the eastern side of Building 256. Several phases of investigation and remediation have been completed within Area 18C, including a Supplemental Phase II RI. In 1998, this investigation led to the removal of one 6,-gallon steel UST, three smaller concrete USTs, former leach field piping, and associated 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 2,45 cubic yards of contaminated soil from this area in 1998, and during the summer of 22, approximately 5,3 additional tons of TCE-contaminated soils were removed from this area (Weston, June 25b). Additional investigations were completed in Area 18C and in the vicinity of Building 165. Those investigations included the collection of additional soil, soil gas and groundwater 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, June 25b). In a 12 March 23 comment letter from the NJDEP concerning the USACE s Draft Final Groundwater Natural Attenuation Report (Weston, July 22), for groundwater, NJDEP requested that potential vapor risks at 165 Fieldcrest Avenue be evaluated. Indoor air sampling conducted in May 23 at Building 165 by the property owner s consultant, Environmental Waste Management Associates (EWMA), indicated that PCE was detected in the indoor air in building tenant spaces. Weston conducted an inspection of the building in June 23, and completed the Indoor Air Building Survey and Sampling Form for each building tenant space. The most-recently updated Indoor Air Building Survey and Sampling Forms, and lists of products encountered, are included in Attachment A. Subsequent indoor air sampling conducted by USACE in June 23 did not detect any PCE in the indoor air. However, PCE was detected in four sub-slab soil gas samples and in one soil sample collected from below the building, indicating a potential subsurface source of PCE below the building. Other VOCs that were detected in the indoor air samples collected during the June 23 sampling event at concentrations above the indoor air guidance values were either not 3-5

44 detected in the sub-slab soil gas samples or detected at concentrations below those detected in the indoor air samples. In August 23, a subsurface vapor remediation system was installed at Building 165 to mitigate potential migration of VOC vapors from the sub-slab soil gas into the building. The system consists of 2 sub-slab vapor extraction points spaced throughout the building in order to obtain coverage of the entire floor space. The 2 extraction points are connected to two blowers that apply vacuum to the vapors beneath the building. Indoor air in Building 165 and the vapor recovery system sample ports were sampled for one year on a quarterly basis (October 23 through July 24) to evaluate the effectiveness of the subsurface vapor remediation system in compliance with the work plan for the Indoor Air Monitoring Work Plan for Building 165 (Weston, October 23). After four quarters of post-remediation sampling, the NJDEP and USACE agreed to semi-annual sampling at Building 165. At each blower, vapor recovery samples are also being taken during each monitoring event to monitor the vapor remediation system. As compared to current NJDEP VIG guidance, the vapor recovery system samples indicate exceedances of NJDEP VIG residential sub-slab soil gas screening levels for PCE during the January 27 sampling event. A PCE exceedance was observed previously during the July 25 sampling event. Chloroform and 1,4-dichlorobenzene have also been detected. During the January 25 sampling event (the first semi-annual event following the quarterly post-remediation sampling program), four sub-slab soil gas points were installed in the same locations as were first sampled in June 23. The sub-slab gas monitoring points were installed at Peppermint Tree Day Care Center, Amax Engineering, Celsis, and the vacant location which was later occupied and subsequently re-vacated by varying companies. In addition, a total of seven indoor air quality samples and one background air sample were collected at Building 165 for analysis of VOCs. The samples were collected from the same locations as each previous sampling event. The indoor air samples were collected at the following tenant locations: Peppermint Tree Day Care Center (one sample and duplicate), Celsis Laboratories Group (Celsis), Rockwell Automation, Amax Engineering Corp. (Amax), Mackay Communications (Mackay), and the vacant location (formerly GVT Skin Care) (Figure 3-1). Historically, the background air sample was collected from next to the playground at the Peppermint Tree Day Care Center. During the September 21 and February 211 sampling event, the background location was collected from the roof above the Peppermint Tree Day Care Center. The two vapor recovery 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 any samples that are or may be in Building 165 since the January 25 sampling event. One pre-remediation and ten post-remediation rounds of sampling have been performed by USACE at Building 165. Sampling events from August 27 through September 28 showed decreasing levels of PCE in sub-slab soil gas. Exceedance of PCE in sub-slab soil gas only occurred in August 27. It was not detected above NJDEP VIG sub-slab screening levels in May and September 28. From August 27 through September 28, PCE was not detected above NJDEP VIG sub-slab screening levels from samples collected from the Vapor Extraction System. During sampling events in August 27 and September 28, chloroform and 3-6

45 methylene chloride were detected in the vapor extraction system above NJDEP VIG sub-slab screening levels. From August 27 through September 28 the following compounds were detected in indoor air above NJDEP VIG screening levels; methylene chloride, benzene, chloroform, and 1,4-dichlorobenzene. The results from the March 29 sampling event at Building 165 showed a decreasing trend in VOC concentrations in the sub-slab soil gas. PCE concentrations in soil gas exceeded NJDEP VIG screening levels at one sampling port (SG-4 Celsis). No other VOCs were detected at concentrations exceeding sub slab screening levels. VOCs continue to be detected above NJDEP VIG screening levels within the vapor recovery system, indicating that the system is functioning to remove them from the soil gas as intended. Although VOCs are detected in indoor air, they are likely due to a non-dod source. The September 29 and February 21 results indicated benzene was the only VOC detected in subslab soil gas at concentrations exceeding the VIG (SG-2 in February 21 only). Benzene, 1,4-DCB, methylene chloride, chloroform, 1,2-DCA, and PCE were all detected in indoor air at a minimum of one sampling location at concentrations exceeding the VIG. A compendium of sub-slab soil gas, vapor recovery monitoring, and indoor air results for all samples collected from Building 165, in comparison to the NJDEP VIG residential and nonresidential screening levels, are provided in Appendix Tables C-1, C-2, and C-3, respectively Current Investigation The indoor air and soil gas samples collected during the September 21 and February 211 events were from the same locations as previous sampling events. The background ambient sample was collected from the roof of the Peppermint Tree Day Care Center instead of near the playground area (Figure 3-1). A pre-sampling walk-through was conducted the week prior to sampling, to verify the locations of the sub-slab soil gas sampling points and to update the indoor air survey. One sample was collected from the each of the two vapor recovery sample ports during the September 21 and February 211 sampling events, as in the previous rounds. The following table summarizes the samples collected during the current investigation at Building 165. Matrix Samples* Parameters/Method Date Sampled Sub-slab Soil Gas 6 22 September 21 VOCs/TO February 211 Vapor Recovery September 21 VOCs/TO February 211 Indoor Air 1 22 September 21 VOCs/TO February September 21 VOCs/TO February 211 *Including duplicate samples. 3-7

46 3.2.3 Sub-slab Soil Gas and Vapor Recovery System Results During the September 21 sampling event, only 1,4 DCB was detected in soil gas above NJDEP VIG screening levels. This exceedance occurred in the duplicate sample at location Celsis 4. No other VOCs were detected in sub-slab soil gas at concentrations greater than the NJDEP VIG screening levels during the September 21 and February 211 sampling events. Table 3-2 and Figure 3-1 present the analytical results of the sub-slab soil gas samples. The following table summarizes the sub-slab soil gas exceedances in comparison with NJDEP VIG screening levels: Compound 1,4-DCB (September 21) * Including duplicate samples. No. of Samples Exceeding* NJDEP VIG Table 1 Non-Residential Sub-Slab Soil Gas Screening Level (ug/m 3 ) NJDEP VIG Table 1 Residential Sub-slab Soil Gas Screening Level (ug/m 3 ) Maximum Concentration Exceeding (ug/m 3 ) 1 of During the September 21 and February 211, there were no VOC exceedances in the vapor recovery samples for either location. Table 3-3 and Figure 3-1 present the analytical results of the vapor recovery samples Building Survey Weston conducted a building walk-through and completed the Indoor Air Building Survey and Sampling Form for each building tenant space in order to identify and evaluate site conditions that could impact the sample results, including any possible indoor air emission sources that could generate target VOCs in the building. The survey and sampling form are updated concurrent with each sampling event to include any changes observed. The forms and lists of products used by building tenants are included in Appendix A Indoor Air Sampling Results The indoor air and background sample results from September 21 and February 211 are shown in Table 3-4. VOCs detected in indoor air at concentrations above the NJDEP VIG screening levels included 1,4-DCB and chloroform. PCE and TCE were not detected in indoor air above the NJDEP VIG screening levels. An indoor air summary table of compounds exceeding NJDEP VIG screening levels from the September 21 and February 211 sampling event are included below: 3-8

47 Compound 1,4- dichlorobenzene (September 21) 1,4- dichlorobenzene (February 211) Chloroform (September 21) No. of Samples Exceeding* * Including duplicate samples Integrated Discussion of Results Range in Concentration Exceeding (ug/m 3 ) NJDEP VIG Table 1 Non-Residential Indoor Air Screening Level (ug/m 3 ) NJDEP VIG Table 1 Residential Indoor Air Screening Level (ug/m 3 ) 6 of of of The data from September 21 and February 211 sampling events for Building 165 shows an incomplete exposure pathway for VOC concentrations in the sub-slab soil gas and indoor air. PCE and TCE concentrations did not exceed the NJDEP VIG screening levels in sub-slab soil gas nor indoor air as they have historically (Weston, 28). While 1,4-DCB was detected in soil gas and indoor air above NJDEP VIG screening levels it has not been detected in groundwater. Chloroform was also detected above NJDEP VIG screening levels at indoor air sample location points. Table 3-1 lists chloroform as a groundwater COPC. However, analytical results from the two vapor recovery sampling ports did not have any constituents exceeding the NJDEP VIG screening levels Conclusions and Recommendations PCE and TCE concentrations in the soil gas samples, vapor recovery samples and indoor air samples are all trending lower when compared to past sampling events. Neither TCE nor PCE were detected in any samples greater than NJDEP VIG screening levels. Although 1,4-DCB was detected in soil gas and indoor air above the NJDEP VIG screening levels, it was not detected in historic groundwater analytical results. Therefore, 1,4-DCB does not have a complete exposure pathway and is not considered a COPC (Table 3-1). From these results it appears that the soil gas treatment system has been effective at eliminating potential health risks at Building 165. Based upon the vapor recovery results over the past year, the USACE recommends continuing to evaluate the operation of the system to determine the best flow rate of the vapor recovery system to maximize removal of the vapors from beneath the subslab and continued monitoring of the building. 3-9

48 TABLES

49 TABLE 3-2 SUBSLAB SOIL GAS ANALYTICAL RESULTS: FEBRUARY 211 BUILDING 165: GROUNDWATER AOC 2 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey COMPOUND 1 Residential Generic Soil Gas Screening Levels 2,3 Location ID: Sample Type: Lab Sample ID: Date: Units: Nonresidential Generic Soil Gas Screening Levels 2,3 Amax 2 Amax 2 Celsis 4 Celsis 4 Celsis 4 Celsis 4 Home 2 Home 2 Pepper 1 Pepper 1 Pepper 1 Pepper 1 Sample Sample Duplicate Sample Duplicate Sample Sample Sample Duplicate Sample Duplicate Sample JA JA JA JA JA JA JA JA JA JA JA JA /22/21 2/25/211 9/22/21 9/22/21 2/25/211 2/25/211 9/22/21 2/25/211 9/22/21 9/22/21 2/25/211 2/25/211 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE U 4.4 U 1.1 U 1.1 U 4.4 U 4.4 U.48 J 4.4 U 1.1 U 4.4 U 4.4 U 4.4 U 1,1,2,2-TETRACHLOROETHANE U 5.5 U 1.4 U 1.4 U 5.5 U 5.5 U 1.4 U 5.5 U 1.4 U 5.5 U 5.5 U 5.5 U 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE U 6.1 U 1.5 U 1.5 U 6.1 U 6.1 U 1.5 U 6.1 U 1.5 U 6.1 U 6.1 U 6.1 U 1,1,2-TRICHLOROETHANE U 4.4 U 1.1 U 1.1 U 4.4 U 4.4 U 1.1 U 4.4 U 1.1 U 4.4 U 4.4 U 4.4 U 1,1-DICHLOROETHANE U 3.2 U.81 U.81 U 3.2 U 3.2 U.81 U 3.2 U.81 U 3.2 U 3.2 U 3.2 U 1,1-DICHLOROETHENE U 3.2 U.79 U.79 U 3.2 U 3.2 U.79 U 3.2 U.79 U 3.2 U 3.2 U 3.2 U 1,2 - DIBROMOETHANE U 6.1 U 1.5 U 1.5 U 6.1 U 6.1 U 1.5 U 6.1 U 1.5 U 6.1 U 6.1 U 6.1 U 1,2,4-TRICHLOROBENZENE U 5.9 U 1.5 U 1.5 U 5.9 U 5.9 U 1.5 U 5.9 U 1.5 U 5.9 U 5.9 U 5.9 U 1,2,4-TRIMETHYLBENZENE NLE NLE J U 3.9 U U J 3.9 U 2.2 J 1,2-DICHLOROBENZENE U 4.8 U 1.2 U 1.2 U 4.8 U 4.8 U 1.2 U 4.8 U 1.2 U 4.8 U 4.8 U 4.8 U 1,2-DICHLOROETHANE U 3.2 U.81 U.81 U 3.2 U 3.2 U.81 U 3.2 U.81 U 3.2 U 3.2 U 3.2 U 1,2-DICHLOROPROPANE U 3.7 U.92 U.92 U 3.7 U 3.7 U.92 U 3.7 U.92 U 3.7 U 3.7 U 3.7 U 1,2-DICHLOROTETRAFLUOROETHANE NLE NLE 5.6 U 5.6 U 1.4 U 1.4 U 5.6 U 5.6 U 1.4 U 5.6 U 1.4 U 5.6 U 5.6 U 5.6 U 1,3,5-TRIMETHYLBENZENE NLE NLE 2.5 J 3.9 U.74 J U 3.9 U.88 J 3.9 U U 3.9 U 3.9 U 1,3-BUTADIENE U 1.8 U.44 U.44 U 1.8 U 1.8 U.44 U 1.8 U.44 U 1.8 U 1.8 U 1.8 U 1,3-DICHLOROBENZENE U 4.8 U 1.2 U 1.2 U 4.8 U 4.8 U 1.2 U 4.8 U 1.2 U 4.8 U 4.8 U 4.8 U 1,4-DICHLOROBENZENE U 4.8 U U 2.7 J J.72 J 4.8 U 4.8 U 4.8 U 1,4-DIOXANE NLE NLE 2.9 U 2.9 U.72 U.72 U 2.9 U 2.9 U.72 U 2.9 U.72 U 2.9 U 2.9 U 2.9 U 2,2,4-TRIMETHYLPENTANE NLE NLE U 3.7 U U U 3.7 U 3.7 U 2-BUTANONE J 2.4 U U 2 J 2-CHLOROTOLUENE U 4.1 U 1 U 1 U 4.1 U 4.1 U 1 U 4.1 U 1 U 4.1 U 4.1 U 4.1 U 2-HEXANONE NLE NLE 3.3 U 3.3 U.49 J U 3.3 U.82 U 3.3 U.82 U 3.3 U 3.3 U 3.3 U 3-CHLOROPROPENE U 2.5 U.63 U.63 U 2.5 U 2.5 U.63 U 2.5 U.63 U 2.5 U 2.5 U 2.5 U 4-ETHYLTOLUENE NLE NLE 2 J 3.9 U.54 J.88 J 3.9 U 3.9 U.59 J 3.9 U U 3.9 U 3.9 U 4-METHYL-2-PENTANONE U 3.3 U.82 U.82 U 3.3 U 1.9 J.82 U U 3.3 U 3.3 U 3.3 U ACETONE BENZENE U 2.6 U U U 2.6 U 2.6 U BENZYLCHLORIDE NLE NLE 4.1 U 4.1 U 1 U 1 U 4.1 U 4.1 U 1 U 4.1 U 1 U 4.1 U 4.1 U 4.1 U BROMODICHLOROMETHANE U 5.4 U 1.3 U 1.3 U 5.4 U 5.4 U U 1.3 U 5.4 U 5.4 U 5.4 U BROMOETHENE U 3.5 U.87 U.87 U 3.5 U 3.5 U.87 U 3.5 U.87 U 3.5 U 3.5 U 3.5 U BROMOFORM U 8.3 U 2.1 U 2.1 U 8.3 U 8.3 U 2.1 U 8.3 U 2.1 U 8.3 U 8.3 U 8.3 U BROMOMETHANE U 3.1 U.78 U.78 U 3.1 U 3.1 U.78 U 3.1 U.78 U 3.1 U 3.1 U 3.1 U CARBON DISULFIDE U 2.5 U.37 J.62 U 2.5 U 2.5 U.5 J 2.5 U U 2.5 U 2.5 U CARBON TETRACHLORIDE U 5 U.6 J.59 J 5 U 5 U.75 J 5 U.63 J 5 U 5 U 5 U CHLOROBENZENE U 3.7 U.46 J.92 U 3.7 U 3.7 U.92 U 3.7 U.92 U 3.7 U 3.7 U 3.7 U CHLOROETHANE U 2.1 U.25 J U 2.1 U.53 U 2.1 U.53 U 2.1 U 2.1 U 2.1 U CHLOROFORM U 3.9 U U 3.9 U 3.9 U J.98 U 3.9 U 3.9 U 3.9 U CHLOROMETHANE J U 1.7 U J J 1.2 J 1.2 J CIS-1,2-DICHLOROETHENE U 3.2 U.79 U.79 U 3.2 U 3.2 U.79 U 3.2 U.79 U 3.2 U 3.2 U 3.2 U CIS-1,3-DICHLOROPROPENE NLE NLE 3.6 U 3.6 U.91 U.91 U 3.6 U 3.6 U.91 U 3.6 U.91 U 3.6 U 3.6 U 3.6 U CYCLOHEXANE J U 2.8 U U U 2.8 U 2.8 U DIBROMOCHLOROMETHANE U 6.8 U 1.7 U 1.7 U 6.8 U 6.8 U 1.7 U 6.8 U 1.7 U 6.8 U 6.8 U 6.8 U DICHLORODIFLUOROMETHANE J 2.1 J U 2.1 J J J 2 J 1.9 J ETHANOL NLE NLE 354 E E E E E 49 E ETHYLACETATE NLE NLE J 2.9 U U 2.9 U 2.4 J ETHYLBENZENE J U 3.5 U J U 3.5 U 3.5 U HEXACHLOROBUTADIENE U 8.5 U 2.1 U 2.1 U 8.5 U 8.5 U 2.1 U 8.5 U 2.1 U 8.5 U 8.5 U 8.5 U HEXANE J 2.7 J J U 2.8 U 6.3 ISOPROPYL ALCOHOL NLE NLE M,P-XYLENES NLE NLE J 2.7 J U 3.3 J METHYLENE CHLORIDE U 2.8 U U 2.8 U U 2.8 U 2.8 U METHYLMETHACRYLATE NLE NLE NA 3.3 U NA NA 3.3 U 3.3 U NA 3.3 U NA NA 3.3 U 3.3 U MTBE U 2.9 U.72 U.72 U 2.9 U 2.9 U.72 U 2.9 U.72 U 2.9 U 2.9 U 2.9 U N-HEPTANE NLE NLE U 3.3 U U U 3.3 U 3.8 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\SoilGasResults_91_211_9 June_24_211_JL 1 of 2

50 TABLE 3-2 SUBSLAB SOIL GAS ANALYTICAL RESULTS: FEBRUARY 211 BUILDING 165: GROUNDWATER AOC 2 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey COMPOUND 1 Residential Generic Soil Gas Screening Levels 2,3 Location ID: Sample Type: Lab Sample ID: Date: Units: Nonresidential Generic Soil Gas Screening Levels 2,3 Amax 2 Amax 2 Celsis 4 Celsis 4 Celsis 4 Celsis 4 Home 2 Home 2 Pepper 1 Pepper 1 Pepper 1 Pepper 1 Sample Sample Duplicate Sample Duplicate Sample Sample Sample Duplicate Sample Duplicate Sample JA JA JA JA JA JA JA JA JA JA JA JA /22/21 2/25/211 9/22/21 9/22/21 2/25/211 2/25/211 9/22/21 2/25/211 9/22/21 9/22/21 2/25/211 2/25/211 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) O-XYLENE NLE NLE J U 3.5 U J U 3.5 U 3.5 U PROPYLENE NLE NLE 3.4 U 3.4 U.86 U.86 U 3.4 U 3.4 U.86 U 3.4 U.86 U 3.4 U 3.4 U 3.4 U STYRENE U 3.4 U U 3.4 U 3.4 U U.85 U 3.4 U 3.4 U 3.4 U TERT-BUTYL ALCOHOL U 2.4 U.61 U.61 U 2.4 U 2.4 U.61 U 1.6 J J 2.4 U 2.4 U TETRACHLOROETHYLENE U 1.1 U U 1.1 U 1.1 U U.27 U 1.1 U 1.1 U 1.1 U TETRAHYDROFURAN NLE NLE 2.4 U 2.4 U.56 J U 2.4 U.53 J 2.4 U.59 U U 2.4 U TOLUENE U 6.4 TRANS-1,2-DICHLOROETHENE U 3.2 U.79 U.79 U 3.2 U 3.2 U.79 U 3.2 U.79 U 3.2 U 3.2 U 3.2 U TRANS-1,3-DICHLOROPROPENE NLE NLE 3.6 U 3.6 U.91 U.91 U 3.6 U 3.6 U.91 U 3.6 U.91 U 3.6 U 3.6 U 3.6 U TRICHLOROETHYLENE U.86 U.21 U.21 U.86 U.86 U.21 U.86 U.21 U.86 U.86 U.86 U TRICHLOROFLUOROMETHANE J VINYL ACETATE NLE NLE 2.8 U 2.8 U.7 U.7 U 2.8 U 2.8 U.7 U 2.8 U.7 U 2.8 U 2.8 U 2.8 U VINYL CHLORIDE U 2 U.51 U.51 U 2 U 2 U.51 U 2 U.51 U 2 U 2 U 2 U XYLENES (TOTAL) J 2.7 J U 3.3 J NOTES: AOC - Area of Concern Ave. - Avenue ID - Identifier NLE - No Limit Established NJDEP - New Jersey Department of Environmental Protection E - Value Exceeds Calibration Range J Estimated Value U - Not Detected Above Reporting Limit ug/m 3 - micrograms per cubic meter Exceedances of NJDEP Nonresidential Generic Indoor Air Screening Levels are indicated by highlighting Exceedances of NJDEP Residential Generic Indoor Air Screening Levels are indicated by bolding 1 The compound list for this table includes the compounds analyzed under the TO-15 analysis. 2 NJDEP Soil Gas Screening Levels as are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March Table 1 is the regulatory screening level used for comparison of the analytical results. K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\SoilGasResults_91_211_9 June_24_211_JL 2 of 2

51 COMPOUND 1 TABLE 3-3 VAPOR RECOVERY ANALYTICAL RESULTS: FEBRUARY 211 BUILDING 165: GROUNDWATER AOC 2 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Residential Generic Soil Gas Screening Levels 2,3 Location ID: Sample Type: Lab Sample ID: Units: Nonresidential Generic Soil Gas Screening Levels 2,3 VR-1 Sample VR-1 Sample VR-2 Sample VR-2 Sample JA JA JA JA Date: 9/22/21 2/25/211 9/22/21 2/25/211 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE U 1.1 U 4.4 U 1.1 U 1,1,2,2-TETRACHLOROETHANE U 1.4 U 5.5 U 1.4 U 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE U 1.5 U 6.1 U 2.1 1,1,2-TRICHLOROETHANE U 1.1 U 4.4 U 1.1 U 1,1-DICHLOROETHANE U.81 U 3.2 U.81 U 1,1-DICHLOROETHENE U.79 U 3.2 U.79 U 1,2 - DIBROMOETHANE U 1.5 U 6.1 U 1.5 U 1,2,4-TRICHLOROBENZENE U 1.5 U 5.9 U 1.5 U 1,2,4-TRIMETHYLBENZENE NLE NLE 3.9 U U 1.9 1,2-DICHLOROBENZENE U 1.2 U 4.8 U 1.2 U 1,2-DICHLOROETHANE U.81 U 3.2 U.81 U 1,2-DICHLOROPROPANE U.92 U 3.7 U.92 U 1,2-DICHLOROTETRAFLUOROETHANE NLE NLE 5.6 U 1.4 U 5.6 U 1.4 U 1,3,5-TRIMETHYLBENZENE NLE NLE 3.9 U.49 J 3.9 U.54 J 1,3-BUTADIENE U.44 U 1.8 U.44 U 1,3-DICHLOROBENZENE U 1.2 U 4.8 U 1.2 U 1,4-DICHLOROBENZENE U 1.2 U 4.8 U 1.2 U 1,4-DIOXANE NLE NLE 2.9 U.72 U 2.9 U.72 U 2,2,4-TRIMETHYLPENTANE NLE NLE U.47 J 2-BUTANONE CHLOROTOLUENE U 1 U 4.1 U 1 U 2-HEXANONE NLE NLE 3.3 U.82 U 3.3 U.82 U 3-CHLOROPROPENE U.63 U 2.5 U.63 U 4-ETHYLTOLUENE NLE NLE 3.9 U.98 U 3.9 U.98 U 4-METHYL-2-PENTANONE U.82 U 3.3 U.82 U ACETONE BENZENE U.93 BENZYLCHLORIDE NLE NLE 4.1 U 1 U 4.1 U 1 U BROMODICHLOROMETHANE U 1.3 U 5.4 U 1.3 U BROMOETHENE U.87 U 3.5 U.87 U BROMOFORM U 2.1 U 8.3 U 2.1 U BROMOMETHANE U.78 U 3.1 U.78 U CARBON DISULFIDE J.62 U 2.5 U.62 U CARBON TETRACHLORIDE U 1.3 U 5 U 1.3 U CHLOROBENZENE U.92 U 3.7 U.92 U CHLOROETHANE U.53 U 2.1 U.53 U CHLOROFORM J 3.9 U 5.4 CHLOROMETHANE J J 1.2 CIS-1,2-DICHLOROETHENE U.79 U 2.4 J.79 U CIS-1,3-DICHLOROPROPENE NLE NLE 3.6 U.91 U 3.6 U.91 U CYCLOHEXANE U U.69 U DIBROMOCHLOROMETHANE U 1.7 U 6.8 U 1.7 U DICHLORODIFLUOROMETHANE J J 1.9 ETHANOL NLE NLE U 35.6 ETHYLACETATE NLE NLE 2.9 U.72 U 2.9 U 1.3 ETHYLBENZENE J.52 J 1.9 J.87 U K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\IndoorAirResults_91_211_4 June_24_211_JL 1 of 2

52 COMPOUND 1 TABLE 3-3 VAPOR RECOVERY ANALYTICAL RESULTS: FEBRUARY 211 BUILDING 165: GROUNDWATER AOC 2 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Residential Generic Soil Gas Screening Levels 2,3 Location ID: Sample Type: Lab Sample ID: Units: Nonresidential Generic Soil Gas Screening Levels 2,3 VR-1 Sample VR-1 Sample VR-2 Sample VR-2 Sample JA JA JA JA Date: 9/22/21 2/25/211 9/22/21 2/25/211 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) HEXACHLOROBUTADIENE U 2.1 U 8.5 U 2.1 U HEXANE U 1.4 ISOPROPYL ALCOHOL NLE NLE U 13 M,P-XYLENES NLE NLE METHYLENE CHLORIDE U U 1 METHYLMETHACRYLATE NLE NLE NA.82 U NA.82 U MTBE U.72 U 2.9 U.72 U N-HEPTANE NLE NLE 3.2 J U.7 J O-XYLENE NLE NLE 1.9 J U.78 J PROPYLENE NLE NLE 3.4 U.86 U 3.4 U.86 U STYRENE U.85 U 3.4 U.85 U TERT-BUTYL ALCOHOL U 2.4 U.61 TETRACHLOROETHYLENE U U TETRAHYDROFURAN NLE NLE 2.4 U.59 U 2.4 U.41 J TOLUENE TRANS-1,2-DICHLOROETHENE U.79 U 3.2 U.79 U TRANS-1,3-DICHLOROPROPENE NLE NLE 3.6 U.91 U 3.6 U.91 U TRICHLOROETHYLENE U.21 U 7.23 TRICHLOROFLUOROMETHANE J 4.3 VINYL ACETATE NLE NLE 2.8 U.7 U 2.8 U.7 U VINYL CHLORIDE U.51 U 2 U.51 U XYLENES (TOTAL) NOTES: AOC - Area of Concern ID - Identifier NLE - No Limit Established NJDEP - New Jersey Department of Environmental Protection J Estimated Value U - Not Detected Above Reporting Limit ug/m 3 - micrograms per cubic meter Exceedances of NJDEP Nonresidential Generic Indoor Air Screening Levels are indicated by highlighting Exceedances of NJDEP Residential Generic Indoor Air Screening Levels are indicated by bolding 1 The compound list for this table includes the compounds analyzed under the TO-15 analysis. 2 NJDEP Soil Gas Screening Levels as are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March Table 1 is the regulatory screening level used for comparison of the analytical results. K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\IndoorAirResults_91_211_4 June_24_211_JL 2 of 2

53 TABLE 3-4 INDOOR AIR ANALYTICAL RESULTS: FEBRUARY 211 BUILDING 165: GROUNDWATER AOC 2 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Location ID: Sample Type Lab Sample ID: Date: Duplicate JA /22/ Sample Sample Sample Duplicate Sample Duplicate Sample Sample Sample Sample Sample Duplicate Sample JA JA JA JA JA JA JA JA JA JA JA JA JA /22/21 2/25/211 9/22/21 2/25/211 2/25/211 9/22/21 9/22/21 2/25/211 9/22/21 2/25/211 9/22/21 2/25/211 2/25/211 Units: (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) COMPOUND 1 Table 2 NJDEP Rapid Action Level 3 Residential Generic Indoor Air Screening Nonresidential Generic Indoor Air Table B-1 DOD Risk- Based Residential Air Concentrations 2 Levels 3,4 Screening Levels 3,4 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE NLE 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 U 1,1,2,2-TETRACHLOROETHANE NLE 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 U 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE NLE 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 U 1,1,2-TRICHLOROETHANE NLE 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 U 1,1-DICHLOROETHANE NLE U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U 1,1-DICHLOROETHENE NLE U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U 1,2 - DIBROMOETHANE NLE 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 U 1,2,4-TRICHLOROBENZENE NLE 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 U 1,2,4-TRIMETHYLBENZENE NLE NLE NLE J J.79 J J 1,2-DICHLOROBENZENE NLE 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 U 1,2-DICHLOROETHANE NLE U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U 1,2-DICHLOROPROPANE NLE U.92 U.92 U.92 U.92 U.92 U.92 U.92 U.92 U.92 U.92 U.92 U.92 U.92 U 1,2-DICHLOROTETRAFLUOROETHANE NLE NLE 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 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1,3,5-TRIMETHYLBENZENE NLE NLE NLE NLE.54 J.59 J.98 U.49 J.98 U.98 U.88 J U 1.98 U.98 U.49 J.98 U 1,3-BUTADIENE NLE U.44 U.44 U.44 U.44 U.44 U.44 U.44 U.44 U.44 U.44 U.44 U.44 U.44 U 1,3-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 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1,4-DICHLOROBENZENE NLE J 1.2 U ,4-DIOXANE NLE NLE NLE U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U 2,2,4-TRIMETHYLPENTANE NLE NLE NLE NLE J J.61 J U 2-BUTANONE NLE J CHLOROTOLUENE NLE 73 1 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 U 2-HEXANONE NLE NLE NLE U.57 J.82 U.82 U.82 U.82 U.82 U.82 U.82 U.82 U.82 U.82 U.82 U.82 U 3-CHLOROPROPENE NLE U.63 U.63 U.63 U.63 U.63 U.63 U.63 U.63 U.63 U.63 U.63 U.63 U.63 U 4-ETHYLTOLUENE NLE NLE NLE NLE.54 J.54 J.98 U.98 U.98 U.98 U.69 J.93 J.98 U.74 J.98 U.98 U.98 U.98 U 4-METHYL-2-PENTANONE NLE U.82 U.82 U.82 U.82 U.82 U.82 U U.82 U.82 U U.82 U ACETONE BENZENE BENZYLCHLORIDE NLE NLE NLE.5 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 U BROMODICHLOROMETHANE NLE 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 U BROMOETHENE NLE U.87 U.87 U.87 U.87 U.87 U.87 U.87 U.87 U.87 U.87 U.87 U.87 U.87 U BROMOFORM NLE 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 U BROMOMETHANE NLE U.78 U.78 U.78 U.78 U.78 U.78 U.78 U.78 U.78 U.78 U.78 U.78 U.78 U CARBON DISULFIDE NLE U.62 U.62 U.62 U.62 U.62 U.62 U.62 U.62 U.62 U.62 U.62 U.62 U.62 U CARBON TETRACHLORIDE U.69 J 1.3 U.63 J 1.3 U 1.3 U.62 J 1.3 U 1.3 U 1.3 U 1.3 U.69 J 1.3 U 1.3 U CHLOROBENZENE NLE U.92 U.92 U.92 U.92 U.92 U.92 U.92 U.92 U.92 U.92 U.92 U.92 U.92 U CHLOROETHANE NLE U.53 U.53 U.53 U.53 U.53 U.53 U.53 U.53 U.53 U.53 U.53 U.53 U.53 U CHLOROFORM U.98 U.98 U.88 J.98 U.98 U.98 U.98 U.98 U.98 U.98 U U.63 J CHLOROMETHANE NLE CIS-1,2-DICHLOROETHENE NLE NLE.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U CIS-1,3-DICHLOROPROPENE NLE NLE NLE NLE.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U CYCLOHEXANE NLE J DIBROMOCHLOROMETHANE NLE 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 U DICHLORODIFLUOROMETHANE NLE ETHANOL NLE NLE NLE NLE 83.8 E 11 E E E 26 E E E ETHYLACETATE NLE NLE NLE NLE U ETHYLBENZENE J J.65 J J HEXACHLOROBUTADIENE NLE 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 U HEXANE NLE ISOPROPYL ALCOHOL NLE NLE NLE E M,P-XYLENES NLE NLE NLE NLE METHYLENE CHLORIDE METHYLMETHACRYLATE NLE NLE NLE 73 NA NA.82 U NA.82 U.82 U NA NA.82 U NA.82 U NA.82 U.82 U MTBE U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U N-HEPTANE NLE NLE NLE NLE J O-XYLENE NLE NLE NLE J J.69 J J PROPYLENE NLE NLE NLE U.86 U.86 U.86 U.86 U U.86 U U.86 U.86 U 4.86 U K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\IndoorAirResults_91_211_4 June_24_211_JL 1 of 4

54 TABLE 3-4 INDOOR AIR ANALYTICAL RESULTS: FEBRUARY 211 BUILDING 165: GROUNDWATER AOC 2 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Location ID: Sample Type Lab Sample ID: Date: Units: Table B-1 DOD Risk- Based Residential Air Concentrations Duplicate JA /22/ Sample Sample Sample Duplicate Sample Duplicate Sample Sample Sample Sample Sample Duplicate Sample JA JA JA JA JA JA JA JA JA JA JA JA JA /22/21 2/25/211 9/22/21 2/25/211 2/25/211 9/22/21 9/22/21 2/25/211 9/22/21 2/25/211 9/22/21 2/25/211 2/25/211 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) COMPOUND 1 Table 2 NJDEP Rapid Action Level 3 Residential Generic Indoor Air Screening Levels 3,4 Nonresidential Generic Indoor Air Screening Levels 3,4 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) STYRENE NLE U.85 U.51 J.51 J.55 J.55 J.85 U.85 U.85 U.85 U.85 U.85 U.85 U.85 U TERT-BUTYL ALCOHOL NLE NLE.33 J.61 U.61 U.58 J.61 U.61 U.61 U.61 U.61 U.52 J.61 U.33 J.61 U.61 U TETRACHLOROETHYLENE U.27 U.27 U.27 U.27 U.27 U.27 U.27 U.27 U U.27 U.27 U TETRAHYDROFURAN NLE NLE NLE NLE.59 U.59 U.59 U U.59 U.59 U.59 U.59 U.59 U.59 U.59 U TOLUENE TRANS-1,2-DICHLOROETHENE NLE U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U TRANS-1,3-DICHLOROPROPENE NLE NLE NLE NLE.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U TRICHLOROETHYLENE U.21 U.21 U.21 U.21 U.21 U.21 U.21 U.21 U.21 U.21 U.21 U.21 U.21 U TRICHLOROFLUOROMETHANE NLE VINYL ACETATE NLE NLE NLE 21.7 U.7 U.7 U.7 U.7 U.7 U.7 U.7 U.7 U.7 U.7 U.7 U.7 U.7 U VINYL CHLORIDE U.51 U.51 U.51 U.51 U.51 U.51 U.51 U.51 U.51 U.51 U.51 U.51 U.51 U XYLENES (TOTAL) NOTES: AOC - Area of Concern ID - Identifier NLE - No Limit Established NJDEP - New Jersey Department of Environmental Protection E - Value Exceeds Calibration Range J Estimated Value U - Not Detected Above Reporting Limit ug/m 3 - micrograms per cubic meter USACE - United States Army Corps of Engineers DOD Department of Defense Exceedances of NJDEP Nonresidential Generic Indoor Air Screening Levels are indicated by highlighting Exceedances of NJDEP Residential Generic Indoor Air Screening Levels are indicated by bolding (ug/m 3 ) 1 The compound list for this table includes the compounds analyzed under the TO-15 analysis. 2 Table B-1 USEPA Risk-Based Residential Air Concentrations as are provided in the DOD Vapor Intrusion Handbook document issued by the DOD January 29 and revised November NJDEP Indoor Air Screening Levels as are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March Table 1 is the regulatory screening level used for comparison of the analytical results. K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\IndoorAirResults_91_211_4 June_24_211_JL 2 of 4

55 TABLE 3-4 INDOOR AIR ANALYTICAL RESULTS: FEBRUARY 211 BUILDING 165: GROUNDWATER AOC 2 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey COMPOUND 1 Table 2 NJDEP Rapid Action Level 3 Residential Generic Indoor Air Screening Levels 3,4 Nonresidential Generic Indoor Air Screening Levels 3,4 Location ID: Sample Type Lab Sample ID: Date: Units: Table B-1 DOD Risk- Based Residential Air Concentrations 2 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE NLE ,1,2,2-TETRACHLOROETHANE NLE ,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE NLE ,1,2-TRICHLOROETHANE NLE ,1-DICHLOROETHANE NLE ,1-DICHLOROETHENE NLE ,2 - DIBROMOETHANE NLE ,2,4-TRICHLOROBENZENE NLE ,2,4-TRIMETHYLBENZENE NLE NLE NLE 7.3 1,2-DICHLOROBENZENE NLE ,2-DICHLOROETHANE NLE ,2-DICHLOROPROPANE NLE ,2-DICHLOROTETRAFLUOROETHANE NLE NLE NLE NLE 1,3,5-TRIMETHYLBENZENE NLE NLE NLE NLE 1,3-BUTADIENE NLE ,3-DICHLOROBENZENE NLE NLE 1,4-DICHLOROBENZENE NLE ,4-DIOXANE NLE NLE NLE.32 2,2,4-TRIMETHYLPENTANE NLE NLE NLE NLE 2-BUTANONE NLE CHLOROTOLUENE NLE 73 1 NLE 2-HEXANONE NLE NLE NLE 31 3-CHLOROPROPENE NLE ETHYLTOLUENE NLE NLE NLE NLE 4-METHYL-2-PENTANONE NLE ACETONE BENZENE BENZYLCHLORIDE NLE NLE NLE.5 BROMODICHLOROMETHANE NLE BROMOETHENE NLE BROMOFORM NLE BROMOMETHANE NLE CARBON DISULFIDE NLE CARBON TETRACHLORIDE CHLOROBENZENE NLE CHLOROETHANE NLE CHLOROFORM CHLOROMETHANE NLE CIS-1,2-DICHLOROETHENE NLE NLE CIS-1,3-DICHLOROPROPENE NLE NLE NLE NLE CYCLOHEXANE NLE DIBROMOCHLOROMETHANE NLE DICHLORODIFLUOROMETHANE NLE ETHANOL NLE NLE NLE NLE ETHYLACETATE NLE NLE NLE NLE ETHYLBENZENE HEXACHLOROBUTADIENE NLE HEXANE NLE ISOPROPYL ALCOHOL NLE NLE NLE 73 M,P-XYLENES NLE NLE NLE NLE METHYLENE CHLORIDE METHYLMETHACRYLATE NLE NLE NLE 73 MTBE N-HEPTANE NLE NLE NLE NLE O-XYLENE NLE NLE NLE 73 PROPYLENE NLE NLE NLE Sample JA /22/21 Sample JA /25/ Sample JA /22/ Duplicate JA /25/ BG BG-1 Sample JA JA JA /25/211 9/22/21 2/25/211 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.79 U.79 U.79 U.79 U.79 U.79 U.79 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 U 1.5 U U.98 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.92 U.92 U.92 U.92 U.92 U.92 U.92 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U.98 U.98 U.98 U.98 U.98 U.98 U.98 U.44 U.44 U.44 U.44 U.44 U.44 U.44 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U.6 J 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U J.65 J.61 J.61 J.93 U.93 U J 1U 1U 1U 1U 1U 1U 1U.82 U.82 U.82 U.82 U.82 U.82 U.82 U.63 U.63 U.63 U.63 U.63 U.63 U.63 U.98 U.98 U.98 U.98 U.98 U.98 U.98 U.82 U.82 U U.82 U.82 U.82 U J U.51 J 1U 1U 1U 1U 1U 1U 1U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U.87 U.87 U.87 U.87 U.87 U.87 U.87 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U.78 U.78 U.78 U.78 U.78 U.78 U.78 U.62 U.62 U.62 U.62 U.62 U.62 U.62 U.63 J 1.3 U 1.3 U 1.3 U 1.3 U.54 J 1.3 U.92 U.92 U.92 U.92 U.92 U.92 U.92 U.53 U.53 U.53 U.53 U.53 U.53 U.53 U.73 J U.93 J.93 J.98 U.98 U U.79 U.79 U.79 U.79 U.79 U.79 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U U J.69 U.69 U.69 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U E 232 E E 249 E U.72 U J.83 J.61 J.74 J.87 U.87 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U J.35 J U U.87 U U NA.82 U NA.82 U.82 U NA.82 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U U.82 U J.83 J.74 J.78 J.87 U.87 U.86 U.86 U.86 U.86 U.86 U.86 U.93 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\IndoorAirResults_91_211_4 June_24_211_JL 3 of 4

56 TABLE 3-4 INDOOR AIR ANALYTICAL RESULTS: FEBRUARY 211 BUILDING 165: GROUNDWATER AOC 2 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Location ID: Sample Type Lab Sample ID: Date: Units: COMPOUND 1 Table 2 NJDEP Rapid Action Level 3 Residential Generic Indoor Air Screening Nonresidential Generic Indoor Air Table B-1 DOD Risk- Based Residential Air Concentrations 2 Levels 3,4 Screening Levels 3,4 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) STYRENE NLE TERT-BUTYL ALCOHOL NLE NLE TETRACHLOROETHYLENE TETRAHYDROFURAN NLE NLE NLE NLE TOLUENE TRANS-1,2-DICHLOROETHENE NLE TRANS-1,3-DICHLOROPROPENE NLE NLE NLE NLE TRICHLOROETHYLENE TRICHLOROFLUOROMETHANE NLE VINYL ACETATE NLE NLE NLE 21 VINYL CHLORIDE XYLENES (TOTAL) Sample JA /22/21 Sample JA /25/ Sample JA /22/ Duplicate JA /25/ BG BG-1 Sample JA JA JA /25/211 9/22/21 2/25/211 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ).85 U.85 U.85 U.85 U.85 U.85 U.85 U.61 U U.61 U U.61 U.27 U.27 U.27 U.27 U.27 U.27 U.27 U U.59 U U.79 U.79 U.79 U.79 U.79 U.79 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.21 U.21 U.21 U.21 U.21 U.21 U.21 U J.7 U.7 U.7 U.7 U.7 U.7 U.7 U.51 U.51 U.51 U.51 U.51 U.51 U.51 U U.87 U NOTES: AOC - Area of Concern ID - Identifier NLE - No Limit Established NJDEP - New Jersey Department of Environmental Protection E - Value Exceeds Calibration Range J Estimated Value U - Not Detected Above Reporting Limit ug/m 3 - micrograms per cubic meter USACE - United States Army Corps of Engineers DOD Department of Defense Exceedances of NJDEP Nonresidential Generic Indoor Air Screening Levels are indicated by highlighting Exceedances of NJDEP Residential Generic Indoor Air Screening Levels are indicated by bolding 1 The compound list for this table includes the compounds analyzed under the TO-15 analysis. 2 Table B-1 USEPA Risk-Based Residential Air Concentrations as are provided in the DOD Vapor Intrusion Handbook document issued by the DOD January 29 3 NJDEP Indoor Air Screening Levels as are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March Table 1 is the regulatory screening level used for comparison of the analytical results. K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\IndoorAirResults_91_211_4 June_24_211_JL 4 of 4

57 FIGURES

58 VR-1 Parameter [Criteria] 1/17/3 1/16/4 4/22/4 7/23/4 1/2/5 7/11/5 1/19/6 7/19/6 1/9/7 8/14/7 5/3/8 9/25/8 3/6/9 9/15/9 2/25/1 9/22/1 2/25/11 TETRACHLOROETHYLENE [3] U U 1.4 U U U J U TRICHLOROETHYLENE [3] 2.7 U 2.7 U 2.7 U 2.7 U 1.1 U 1.1 U 1.1 U 11 U 1.1 U 11 U J 2.53 J.86 U.21 U Amax 2 Parameter [Criteria] 6/7/3 1/21/5 7/12/5 1/2/6 7/19/6 1/1/7 8/14/7 5/3/8 9/24/8 3/5/9 9/15/9 2/25/1 9/22/1 2/25/11 TETRACHLOROETHYLENE [34] 1 D 1.4 U U 14 U U J U 1.1 U TRICHLOROETHYLENE [27] 2.7 U 1.1 U 1.1 U 11 U 11 U 11 U 11 U.22 U U 1.61 J U.86 U 165-SG-5 Parameter [Criteria] 8/24/7 TETRACHLOROETHYLENE [34] 68 TRICHLOROETHYLENE [27] 11 U VR-2 Home 2 Parameter [Criteria] 6/7/3 1/21/5 7/12/5 1/2/6 1/1/7 5/3/8 9/24/8 3/5/9 9/15/9 2/25/1 9/22/1 2/25/11 TETRACHLOROETHYLENE [34] U U J U TRICHLOROETHYLENE [27] 2.7 U 1.1 U 1.1 U 11 U 11 U.22 U J 1.5 J.21 U.86 U Parameter [Criteria] 1/17/3 1/16/4 4/22/4 7/23/4 1/2/5 7/11/5 1/19/6 7/19/6 1/9/7 8/14/7 5/3/8 9/25/8 3/6/9 9/15/9 2/25/1 9/22/1 2/25/11 9/22/11 TETRACHLOROETHYLENE [3] U 3.4 U 6.8 U 2.8 U U U.33 U J.2 J U 2.5 TRICHLOROETHYLENE [3] 2.7 U 2.7 U 2.7 U 5.4 U U 1.1 U 11 U 1.1 U 11 U.22 U J 1.5 J DRAWING TITLE: PCE & TCE RESULTS FOR SUBSLAB SOIL GAS AND INDOOR AIR SAMPLES BUILDING " = 1' 1/3/212 FIGURE: SCALE: DATE: Peppermint Tree ")") h?!(!( h!(!(!(!(????!(!(!(!(!(!( Cembre h 165-BG (Outside) Vacant Pepper 4 Rockwell ")")") Mackay Parameter [Criteria] 6/8/3 TETRACHLOROETHYLENE [3] 3.4 U TRICHLOROETHYLENE [3] 2.7 U? Parameter [Criteria] 9/22/1 2/25/11 TETRACHLOROETHYLENE [3].27 U.27 U TRICHLOROETHYLENE [3].21 U.21 U!(!(!( Celsis 2 Parameter [Criteria] 6/8/3 TETRACHLOROETHYLENE [3] 3.4 U TRICHLOROETHYLENE [3] 2.7 U Parameter [Criteria] 6/8/3 1/18/3 1/17/4 4/23/4 7/29/4 1/21/5 7/11/5 1/19/6 1/9/7 8/13/7 5/3/8 9/24/8 3/4/9 9/15/9 2/25/1 9/22/1 2/25/11 TETRACHLOROETHYLENE [3] 3.4 U 3.4 U 3.4 U 3.4 U 3.4 U 1.4 U 1.4 U 1.4 U U J U.29 TRICHLOROETHYLENE [3] 2.7 U 2.7 U 2.7 U 2.7 U 2.7 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U.22 U.22 U.21 U.21 U.91 J.21 U.21 U Parameter [Criteria] 6/8/3 1/18/3 1/17/4 4/23/4 7/23/4 1/21/5 7/11/5 1/19/6 7/19/6 1/9/7 8/13/7 5/3/8 9/23/8 3/4/9 9/14/9 2/25/1 9/22/1 2/25/11 2/25/11 TETRACHLOROETHYLENE [3] 3.4 U 3.4 U 3.4 U 3.4 U 3.4 U 1.4 U 1.4 U 1.4 U 1.4 U U J U.27 U.27 U TRICHLOROETHYLENE [3] 2.7 U 2.7 U 2.7 U 2.7 U U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U.22 U U.21 U.81 J.21 U.21 U.21 U Parameter [Criteria] 6/8/3 1/18/3 1/17/4 4/23/4 7/23/4 1/21/5 7/11/5 1/19/6 7/19/6 1/9/7 8/13/7 5/3/8 9/24/8 3/4/9 9/15/9 2/25/1 9/22/1 2/25/11 2/25/11 TETRACHLOROETHYLENE [3] 3.4 U 3.4 U 3.4 U 3.4 U 3.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U.33 U J U.27 U.27 U TRICHLOROETHYLENE [3] 2.7 U 2.7 U 2.7 U 2.7 U 2.7 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U.22 U.22 U.21 U.21 U.75 J.21 U.21 U.21 U Parameter [Criteria] 6/8/3 1/18/3 1/17/4 4/23/4 7/23/4 1/21/5 7/11/5 1/19/6 7/19/6 1/9/7 8/13/7 5/3/8 9/24/8 3/4/9 9/15/9 2/25/1 9/22/1 9/22/1 2/25/11 TETRACHLOROETHYLENE [3] 3.4 U 3.4 U 3.4 U 3.4 U 6.8 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U.33 U J U.27 U.27 U TRICHLOROETHYLENE [3] 2.7 U 2.7 U 2.7 U 2.7 U 5.4 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U.22 U.22 U.21 U.21 U.91 J.21 U.21 U.21 U Parameter [Criteria] 6/8/3 1/18/3 1/17/4 7/23/4 1/21/5 7/11/5 1/19/6 7/19/6 1/9/7 8/13/7 5/3/8 9/24/8 3/4/9 9/14/9 2/25/1 9/22/1 2/25/11 2/25/11 TETRACHLOROETHYLENE [3] 3.4 U 3.4 U 3.4 U 3.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U.33 U J U.27 U.27 U TRICHLOROETHYLENE [3] 2.7 U 2.7 U 2.7 U 2.7 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U.22 U.22 U.21 U.21 U.48 J.21 U.21 U.21 U Parameter [Criteria] 6/8/3 1/18/3 1/17/4 4/23/4 7/23/4 1/21/5 7/11/5 1/19/6 7/19/6 1/9/7 8/13/7 5/3/8 9/24/8 3/4/9 9/15/9 2/25/1 9/22/1 2/25/11 TETRACHLOROETHYLENE [3] 3.4 U 3.4 U 3.4 U 3.4 U 3.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U.33 U U.41 J U.27 U TRICHLOROETHYLENE [3] 2.7 U 2.7 U 2.7 U 2.7 U 2.7 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U.22 U U.21 U.64 J.21 U.21 U Pepper Celsis 165-8(Roof) Parameter [Criteria] 1/17/4 1/21/5 7/11/5 1/19/6 7/19/6 TETRACHLOROETHYLENE [3] 3.4 U 1.4 U 1.4 U 1.4 U 1.4 U TRICHLOROETHYLENE [3] 2.7 U 1.1 U 1.1 U 1.1 U 1.1 U Graphic Scale In Feet Celsis 4 Parameter [Criteria] 6/7/3 1/21/5 7/12/5 1/2/6 7/19/6 1/1/7 8/14/7 5/3/8 9/24/8 3/5/9 9/15/9 2/25/1 9/22/1 9/22/1 2/25/11 2/25/11 TETRACHLOROETHYLENE [34] 11 D 1.4 U U 14 U U U.2 U.27 U 1.1 U 1.1 U 1.1 U TRICHLOROETHYLENE [27] 2.7 U 1.1 U 1.1 U 11 U 11 U 11 U 11 U U U.86 U.86 U.86 U Parameter [Criteria] 8/13/7 5/3/8 9/24/8 3/4/9 9/14/9 TETRACHLOROETHYLENE [3] 1.4 U.33 U.47.2 U.2 U TRICHLOROETHYLENE [3] 1.1 U.22 U U.21 U Parameter [Criteria] 6/8/3 1/18/3 4/23/4 7/23/4 1/9/7 TETRACHLOROETHYLENE [3] 3.4 U 3.4 U 3.4 U 3.4 U 1.4 U TRICHLOROETHYLENE [3] 2.7 U 2.7 U 2.7 U 2.7 U 1.1 U Parameter [Criteria] 6/7/3 1/21/5 7/12/5 1/2/6 7/19/6 1/1/7 8/14/7 5/3/8 9/24/8 3/5/9 9/15/9 2/25/1 9/22/1 9/22/1 2/25/11 2/25/11 TETRACHLOROETHYLENE [34] U U 14 U U U 1.1 U 1.1 U TRICHLOROETHYLENE [27] 2.7 U 1.1 U 1.1 U 11 U 11 U 11 U 11 U.22 U U 2.31 J.21 U.21 U.86 U.86 U Parameter [Criteria] 6/8/3 1/18/3 1/17/4 4/23/4 7/23/4 1/21/5 7/11/5 1/19/6 7/19/6 1/9/7 8/13/7 5/3/8 9/24/8 3/4/9 9/15/9 2/25/1 9/22/1 9/22/1 2/25/11 TETRACHLOROETHYLENE [3] 3.4 U 3.4 U 3.4 U 3.4 U 3.4 U 1.4 U 1.4 U U U J.2 J U.27 U TRICHLOROETHYLENE [3] 2.7 U 2.7 U 2.7 U 2.7 U 2.7 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U.22 U U.21 U.48 J.21 U.21 U.21 U Legend: h Ambient Air Sample Location!( Indoor Air Sample Location? Subslab Soil Gas Sample Location ") Vapor Recovery Sample Location Building Boundary 3.8 Exceeds NJ VIG Criteria (2)(3) Soil Gas Sample Results Indoor Air Sample Results Ambient Air Sample Result Vapor Recovery Sample Results Notes: 1. Building Area: 98, square feet. 2. Subslab Soil Gas and Indoor Air Results compared to Table 1 (Generic Vapor Intrusion Screening Levels) of the NJDEP VIG, March The most stringent (Residential) criteria was used to identify exceedances. NJDEP = New Jersey Department of Environmental Protection PCE = Tetrachloroethylene TCE = Trichloroethylene D = Diluted Result J = Estimated Value U = Undetected Result VIG = Vapor Intrusion Guidance RESULTS & CRITERIA ARE LISTED IN MICROGRAMS PER CUBIC METER (ug/m3) CLIENT NAME: PROJECT MANAGER: REPORT DATE: P. Bovitz U.S. ARMY CORPS OF ENGINEERS NEW ENGLAND & NEW YORK DISTRICTS January 212 CHECKED BY: D. Krumich DRAWING: 1664_165_IAQ.mxd PATH: K:/Raritan1/RaritanGIS/ Mxd/212_1_IAQ PROJECT NAME: CONTRACT No. REVISION No. INDOOR AIR QUALITY REPORT #7 FORMER RARITAN ARSENAL EDISON, NEW JERSEY DELIVERY ORDER NO. DRAWN/MODIFIED BY: WORK ORDER No. Weston Solutions, Inc. J. Lynes 1/3/212 DATE CREATED: SM 25 Campus Drive Edison, New Jersey TEL: (732) Fax: (732)

59 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 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. Campus Plaza 4 is surrounded by parking lot with small landscaped and lawn areas. Twelve rounds of indoor air and sub-slab soil gas samples were collected at Campus Plaza 4 by Weston and Shaw for USACE from October 24 through February 21. Current investigation activities included sub-slab soil gas and indoor air sample collection during September 21 and February Prior Investigations The original indoor air sampling at Campus Plaza 4 was conducted in May 24 by EWMA under contract to Federal Business Center (FBC), the building 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, sub-slab soil, and sub-slab soil gas samples in October and November 24. The results of this investigation indicated the possibility of a vapor intrusion pathway based on the presence of TCE in both sub-slab soil gas and indoor air. However, the tenant at 284 Campus Drive (Englehard) utilizes a number of VOCs in their business, and may be contributing to the prior indoor air exceedances (of EPA Table 2C benchmarks) detected during that sampling event. The VOCs with concentrations in soil gas that previously exceeded the EPA 2C guidelines were benzene, ethylbenzene, methylene chloride, methyl tert-butyl ether (MTBE), and toluene, as well as PCE and TCE. A confirmatory round of indoor air sampling was recommended per the IAQ approach. A second round of indoor air and sub-slab soil gas samples was collected in January 26. In subslab soil gas, TCE was the only VOC detected 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, of MTBE in two of five samples, and of 1,4-DCB and benzene in four of five indoor air samples. USACE recommended continued semiannual monitoring of sub-slab soil gas and indoor air monitoring along with an evaluation of remedial alternatives. Subsequently, USACE and NJDEP agreed to increase the monitoring frequency for Campus Plaza 4 to quarterly monitoring, beginning with the September 26 sampling event. However, after the September 28 summer sampling event, the USACE and NJDEP agreed to continue sampling on a semi-annual basis. March 29 sub-slab analytical results for Campus Plaza 4 continued to show concentrations of PCE and TCE above VIG screening levels. However, the concentrations of these constituents in indoor air did not exceed the VIG screening levels. Because of the VOC concentrations in soil gas, the USACE agreed to continue both sub-slab and indoor air sampling for this building. 3-1

60 A compendium of sub-slab soil gas and indoor air results for all samples collected from Campus Plaza 4, in comparison to the NJDEP VIG residential and non-residential screening levels, are provided in Appendix Tables C-4 and C-5, respectively Current Investigation At Campus Plaza 4, sub-slab soil gas and indoor air samples were collected from Federal Business Center, Bareweb, Fabritex, and Agilysys in September 21, October 21, and February 211. For continuity, samples were collected from the same or similar locations as those during past sampling events. One sub-slab gas sampling port (SG-5) located in this building was damaged and could not be sampled in September 29 and February 21. A new sampling port was installed at the historic location in September 21, two days prior to the sampling event. Due to a malfunction with the SUMMA canisters, the indoor air sample CP4-1 and sub-slab soil gas sample CP4-SG-1 were not analyzed in September 21. The samples were collected in October 21 and analyzed. The following table summarizes the samples collected under the current investigation at Campus Plaza 4. Matrix Samples Parameters/Method Dates Sampled 4 22 September 21 Sub-slab Soil Gas 1 VOCs/TO-15 8 October February September 21 Indoor Air 1 VOCs/TO October February 211 *Including duplicate samples Sub-slab Soil Gas Results During the recent sampling events, TCE, PCE, and chloroform were detected in soil gas samples at concentrations that exceeded the NJDEP VIG screening levels. No other VOC was detected in sub-slab soil gas samples at concentrations that exceeded the NJDEP residential screening level during this sampling event. The sub-slab soil gas results are shown on Table 3-5. The PCE and TCE results are shown on Figure 3-2. The following table summarizes the NJDEP VIG exceedances in sub-slab soil gas samples during the current investigation: Compound Chloroform (February 211) TCE (September 21) TCE (February 21) PCE (September 21) No. of Samples Exceeding* NJDEP VIG Table 1 Non-Residential Sub-slab Soil Gas Screening Level Criterion (ug/m 3 ) NJDEP VIG Table 1 Residential Sub-slab Soil Gas Screening Level Criterion (ug/m 3 ) Range in Concentration Exceeding (ug/m 3 ) 1 of of of of

61 Compound No. of Samples Exceeding* NJDEP VIG Table 1 Non-Residential Sub-slab Soil Gas Screening Level Criterion (ug/m 3 ) NJDEP VIG Table 1 Residential Sub-slab Soil Gas Screening Level Criterion (ug/m 3 ) Range in Concentration Exceeding (ug/m 3 ) PCE (February 211) 2 of * Including duplicate samples Building Survey At Campus Plaza 4, there were four tenant locations surveyed. These locations cumulatively encompass the entire building. The locations are American Income Life/Agilysys (274 Raritan Center Parkway), Fabrictex (278/284 Raritan Center Parkway), Bareweb (28 Raritan Center Parkway), and FBC (3 Raritan Center Parkway). The Indoor Air Building Survey and Sampling Forms were updated prior to each of the indoor air sampling event. The updated forms include information on chemicals observed and building size and construction. The updated forms and MSDS forms can be found in Appendix A. The facilities are mostly office and warehouse spaces. During the site inspections, only daily-use cleaning supplies were observed. These cleaning products would only produce a minimal potential source of VOC. The only exception is FBC. FBC plans, builds, and manages office and distribution space within Raritan Center. During the most recent site inspection and past site inspections of this facility, many potential VOC sources were located and noted on the survey form. These included several brands of paint thinner containing benzene, 1,2,4-trimethylbenzene, and 1,3,5-trimethylbenzene; multiple brands of paint primer containing ethylbenzene, acetone, and toluene; liquid nail adhesive containing toluene; Siperstein brand acrylic urethane primer containing 1,3,5-trimethylbenzene, methyl isobutyl ketone, and 1,2,4-trimethylbenzene; Wasp and Hornet Killer containing 1,1,1- trichloroethane; and Imperial brand Rapid Brush Cleaner containing acetone, xylenes, and ethylbenzene. The storage and quantity of these products vary depending on current FBC needs. Daily-use cleaning products were found throughout the location; however, these products did not present any significant potential VOC sources Indoor Air Sampling Results TCE, methylene chloride, and 1,4-DCB were detected in indoor air above NJDEP VIG screening levels during the September 21, October 21, and February 211 sampling events. The analytical data is provided on Table 3-6, while the following table summarizes VOC concentrations exceeding NJDEP VIG screening levels in indoor air samples: Compound 1,4-Dichlorobenzene (February 21) Methylene Chloride (September 21) No. of Samples Exceeding* NJDEP VIG Table 1 Non-Residential Indoor Air Screening Level Criterion (ug/m 3 ) 3-12 NJDEP VIG Table 1 Residential Indoor Air Screening Level Criterion (ug/m 3 ) Range in Concentration Exceeding (ug/m 3 ) 1 of of

62 Compound No. of Samples Exceeding* NJDEP VIG Table 1 Non-Residential Indoor Air Screening Level Criterion (ug/m 3 ) NJDEP VIG Table 1 Residential Indoor Air Screening Level Criterion (ug/m 3 ) Range in Concentration Exceeding (ug/m 3 ) Methylene Chloride (October 21) 1 of Methylene Chloride (February 211) 1 of TCE (September 21) 1 of TCE (February 211) 1 of * Including duplicate samples Integrated Discussion of Results Sub-slab and indoor air analytical results for sampling were conducted in September 21, October 21, and February 211. PCE, TCE and chloroform concentrations in soil gas were detected above the NJDEP VIG screening levels. TCE, 1,4 DCB, and methylene chloride were detected in indoor air at concentrations above NJDEP VIG screening levels, indicating a complete exposure pathway for TCE but not the other VOCs Conclusions and Recommendations The sub-slab soil gas analytical results from September 21 and February 211 sampling events for Campus Plaza 4 continue to show elevated levels of PCE and TCE above NJDEP VIG screening levels. The indoor air analytical results from the February 211 sampling event had TCE concentrations above the regulatory limits. Since TCE was detected in both soil gas and indoor air, a complete exposure pathway still has the potential to exist in Campus Plaza 4. The USACE plans to continue both sub-slab and indoor air sampling for Campus Plaza 4 over the next year at which time the data will be reevaluated as will the determination of additional sampling events. 3-13

63 TABLES

64 TABLE 3-5 SUBSLAB SOIL GAS ANALYTICAL RESULTS: FEBRUARY 211 CAMPUS PLAZA 4: GROUNDWATER AOC 2 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey COMPOUND 1 Residential Generic Soil Gas Screening Levels 2,3 Sample Sample Sample CP4-SG-5 Duplicate JA /22/21 (ug/m 3 ) CP4-SG-5 Sample JA /22/21 (ug/m 3 ) CP4-SG-5 Sample JA /25/211 (ug/m 3 ) Location ID: CP4-SG-1 CP4-SG-1 CP4-SG-2 CP4-SG-2 CP4-SG-3 CP4-SG-3 CP4-SG-3 CP4-SG-4 CP4-SG-4 Sample Type: Sample Sample Sample Duplicate Sample Sample Lab Sample ID: JA JA JA JA JA JA JA JA JA Date: 1/8/21 2/25/211 9/22/21 2/25/211 9/22/21 9/22/21 2/25/211 9/22/21 2/25/211 Units: (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Nonresidential Generic Soil Gas Screening Levels 2,3 (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE U 4.4 U 4.4 U 4.4 U 4.4 U 1.1 U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 1,1,2,2-TETRACHLOROETHANE U 5.5 U 5.5 U 5.5 U 5.5 U 1.4 U 5.5 U 5.5 U 5.5 U 5.5 U 5.5 U 5.5 U 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE U 6.1 U 6.1 U 6.1 U 6.1 U J 6.1 U 4.1 J 6.1 U 6.1 U 6.1 U 1,1,2-TRICHLOROETHANE U 4.4 U 4.4 U 4.4 U 4.4 U 1.1 U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 1,1-DICHLOROETHANE U 3.2 U 3.2 U 3.2 U 3.2 U.81 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 1,1-DICHLOROETHENE U 3.2 U 3.2 U 3.2 U 3.2 U.79 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 1,2 - DIBROMOETHANE U 6.1 U 6.1 U 6.1 U 6.1 U 1.5 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 1,2,4-TRICHLOROBENZENE U 5.9 U 5.9 U 5.9 U 5.9 U 1.5 U 5.9 U 5.9 U 5.9 U 5.9 U 5.9 U 5.9 U 1,2,4-TRIMETHYLBENZENE NLE NLE U 3.9 U 3.3 J 3.9 U J 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 1,2-DICHLOROBENZENE U 4.8 U 4.8 U 4.8 U 4.8 U 1.2 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 1,2-DICHLOROETHANE U 3.2 U 3.2 U 3.2 U 3.2 U.81 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 1,2-DICHLOROPROPANE U 3.7 U 3.7 U 3.7 U 3.7 U.92 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 1,2-DICHLOROTETRAFLUOROETHANE NLE NLE 1.4 U 5.6 U 5.6 U 5.6 U 5.6 U 1.4 U 5.6 U 5.6 U 5.6 U 5.6 U 5.6 U 5.6 U 1,3,5-TRIMETHYLBENZENE NLE NLE.79 J 3.9 U 3.9 U 3.9 U 3.9 U.98 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 1,3-BUTADIENE U 1.8 U 1.8 U 1.8 U 1.8 U.44 U 1.8 U 1.8 U 1.8 U 1.8 U 1.8 U 1.8 U 1,3-DICHLOROBENZENE U 4.8 U 4.8 U 4.8 U 4.8 U 1.2 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 1,4-DICHLOROBENZENE U 4.8 U 4.8 U 4.8 U 4.8 U U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 1,4-DIOXANE NLE NLE.72 U 2.9 U 2.9 U 2.9 U 2.9 U.72 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2,2,4-TRIMETHYLPENTANE NLE NLE.93 U 3.7 U 3.7 U 3.7 U 3.7 U.93 U 3.7 U 3.7 U 3.7 U 2.9 J 3.7 U 3.7 U 2-BUTANONE U U 2.4 U J 1.4 J 2-CHLOROTOLUENE U 4.1 U 4.1 U 4.1 U 4.1 U 1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 2-HEXANONE NLE NLE.82 U 3.3 U 3.3 U 3.3 U 3.3 U.82 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3-CHLOROPROPENE U 2.5 U 2.5 U 2.5 U 2.5 U.63 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 4-ETHYLTOLUENE NLE NLE.64 J 3.9 U 3.9 U 3.9 U 3.9 U.98 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 4-METHYL-2-PENTANONE U 3.3 U 3.3 U 1.8 J 3.3 U.82 U 3.1 J 3.3 U 3.3 U 3.3 U 3.3 U 1.6 J ACETONE BENZENE U 2.6 U 2.6 U 2.6 U 2.6 U U 2.6 U 2.6 U 2.6 U 2.6 U 2.6 U BENZYLCHLORIDE NLE NLE 1 U 4.1 U 4.1 U 4.1 U 4.1 U 1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U BROMODICHLOROMETHANE U 5.4 U 5.4 U 5.4 U 5.4 U 1.3 U 5.4 U 5.4 U 5.4 U 5.4 U 5.4 U 5.4 U BROMOETHENE U 3.5 U 3.5 U 3.5 U 3.5 U.87 U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U BROMOFORM U 8.3 U 8.3 U 8.3 U 8.3 U 2.1 U 8.3 U 8.3 U 8.3 U 8.3 U 8.3 U 8.3 U BROMOMETHANE U 3.1 U 3.1 U 3.1 U 3.1 U.78 U 3.1 U 3.1 U 3.1 U 3.1 U 3.1 U 3.1 U CARBON DISULFIDE U 2.5 U 2.5 U 2.5 U 2.5 U U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U CARBON TETRACHLORIDE U 5 U 5 U 5 U 5 U 1.1 J 5 U 5 U 5 U 5 U 5 U 5 U CHLOROBENZENE U 3.7 U 3.7 U 3.7 U 3.7 U.92 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U CHLOROETHANE U 2.1 U 2.1 U 2.1 U 2.1 U.53 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U CHLOROFORM J 3.9 U 3.9 U 3.9 U J 3.9 U CHLOROMETHANE U 1.7 U 1.7 U 1.3 J 1.2 J U 1.7 U 1.7 U 1.1 J J CIS-1,2-DICHLOROETHENE U 3.2 U 3.2 U U CIS-1,3-DICHLOROPROPENE NLE NLE.91 U 3.6 U 3.6 U 3.6 U 3.6 U.91 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U CYCLOHEXANE U U 2.8 U.62 J 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U DIBROMOCHLOROMETHANE U 6.8 U 6.8 U 6.8 U 6.8 U 1.7 U 6.8 U 6.8 U 6.8 U 6.8 U 6.8 U 6.8 U DICHLORODIFLUOROMETHANE U 3.4 J 3 J J 4 U 2.4 J 2.3 J 3.1 J 2.3 J ETHANOL NLE NLE ETHYLACETATE NLE NLE U 2.9 U U.72 U U 2.9 U ETHYLBENZENE U 3.5 U 3.5 U 3.5 U.52 J 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U HEXACHLOROBUTADIENE U 8.5 U 8.5 U 8.5 U 8.5 U 2.1 U 8.5 U 8.5 U 8.5 U 8.5 U 8.5 U 8.5 U HEXANE U J U 2.8 U 2.8 U 1.6 J 1.5 J 2.8 U ISOPROPYL ALCOHOL NLE NLE.76 2 U M,P-XYLENES NLE NLE U 2.8 J U U 3.5 U 3.5 U 3.5 U 3.5 U 2.5 J METHYLENE CHLORIDE U 2.8 U 2.8 U 2.7 J 2.8 U METHYLMETHACRYLATE NLE NLE NA 3.3 U NA 3.3 U NA NA 3.3 U NA 3.3 U NA NA 3.3 U MTBE U 2.9 U 2.9 U 2.9 U 2.9 U.72 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U N-HEPTANE NLE NLE U 3.3 U 1.6 J 3.3 U.82 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\SoilGasResults_91_211_9 June_24_211_JL 1 of 2

65 TABLE 3-5 SUBSLAB SOIL GAS ANALYTICAL RESULTS: FEBRUARY 211 CAMPUS PLAZA 4: GROUNDWATER AOC 2 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey COMPOUND 1 Residential Generic Soil Gas Screening Levels 2,3 Sample Sample Sample CP4-SG-5 Duplicate JA /22/21 (ug/m 3 ) CP4-SG-5 Sample JA /22/21 (ug/m 3 ) CP4-SG-5 Sample JA /25/211 (ug/m 3 ) Location ID: CP4-SG-1 CP4-SG-1 CP4-SG-2 CP4-SG-2 CP4-SG-3 CP4-SG-3 CP4-SG-3 CP4-SG-4 CP4-SG-4 Sample Type: Sample Sample Sample Duplicate Sample Sample Lab Sample ID: JA JA JA JA JA JA JA JA JA Date: 1/8/21 2/25/211 9/22/21 2/25/211 9/22/21 9/22/21 2/25/211 9/22/21 2/25/211 Units: (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Nonresidential Generic Soil Gas Screening Levels 2,3 (ug/m 3 ) (ug/m 3 ) O-XYLENE NLE NLE U 3.5 U 3.5 U 3.5 U.74 J 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U PROPYLENE NLE NLE.86 U 2.6 J 3.4 U 3.4 U 3.4 U.86 U 1.6 J 3.4 U 1.9 J 3.4 U 3.4 U 3.4 U STYRENE U 3.4 U 3.4 U 3.4 U 3.4 U.85 U 3.4 U 3.4 U 3.4 U 3.4 U 3.4 U 3.4 U TERT-BUTYL ALCOHOL U 2.4 U 2.4 U 2.4 U 2.4 U.61 U 2.4 U 2.4 U 2.4 U 2.4 U 2.4 U 2.4 U TETRACHLOROETHYLENE U TETRAHYDROFURAN NLE NLE.35 J 2.4 U 2.4 U 1.9 J 2.4 U.59 U 2.4 U 2.4 U 2.4 U 2.4 U 2.4 U 2.4 U TOLUENE U U 3 U 2.7 J 2 J 2.5 J TRANS-1,2-DICHLOROETHENE U 3.2 U 3.2 U 3.2 U 3.2 U U 3.2 U 3.2 U 3.2 U 3.2 U TRANS-1,3-DICHLOROPROPENE NLE NLE.91 U 3.6 U 3.6 U 3.6 U 3.6 U.91 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U TRICHLOROETHYLENE TRICHLOROFLUOROMETHANE VINYL ACETATE NLE NLE.7 U 2.8 U 2.8 U 2.8 U 2.8 U.7 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U VINYL CHLORIDE U 2 U 2 U 2 U 2 U.51 U 2 U 2 U 2 U 2 U 2 U 2 U XYLENES (TOTAL) U 2.8 J U U 3.5 U 3.5 U 3.5 U 3.5 U 2.5 J NOTES: AOC - Area of Concern ID - Identifier NLE - No Limit Established NJDEP - New Jersey Department of Environmental Protection J Estimated Value U - Not Detected Above Reporting Limit ug/m 3 - micrograms per cubic meter Exceedances of NJDEP Nonresidential Generic Indoor Air Screening Levels are indicated by highlighting Exceedances of NJDEP Residential Generic Indoor Air Screening Levels are indicated by bolding 1 The compound list for this table includes the compounds analyzed under the TO-15 analysis. 2 NJDEP Soil Gas Screening Levels as are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March Table 1 is the regulatory screening level used for comparison of the analytical results. K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\SoilGasResults_91_211_9 June_24_211_JL 2 of 2

66 TABLE 3-6 INDOOR AIR ANALYTICAL RESULTS: FEBRUARY 211 CAMPUS PLAZA 4: GROUNDWATER AOC 2 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey COMPOUND 1 Table 2 NJDEP Rapid Action Level 3 Residential Generic Indoor Air Screening Levels 3,4 Nonresidential Generic Indoor Air Screening Levels 3,4 Location ID: CP4-1 CP4-1 CP4-2 CP4-2 CP4-2 CP4-4 CP4-4 CP4-4 CP4-5 CP4-5 Sample Type: Sample Sample Sample Sample Sample Sample Duplicate Sample Sample Duplicate Lab Sample ID: JA JA JA JA JA JA JA JA JA JA Date: 1/8/21 2/25/211 9/22/21 9/22/21 2/25/211 9/22/21 2/25/211 2/25/211 9/22/21 2/25/211 Units: (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Table B-1 DOD Risk- Based Residential Air Concentrations 2 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE NLE 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 1,1,2,2-TETRACHLOROETHANE NLE 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 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE NLE 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 1,1,2-TRICHLOROETHANE NLE 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-DICHLOROETHANE NLE U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U 1,1-DICHLOROETHENE NLE U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U 1,2 - DIBROMOETHANE NLE 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 1,2,4-TRICHLOROBENZENE NLE 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 1,2,4-TRIMETHYLBENZENE NLE NLE NLE ,2-DICHLOROBENZENE NLE 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-DICHLOROETHANE NLE U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U 1,2-DICHLOROPROPANE NLE U.92 U.92 U.92 U.92 U.92 U.92 U.92 U.92 U.92 U.92 U 1,2-DICHLOROTETRAFLUOROETHANE NLE NLE NLE NLE 1.4 U 1.4 U U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1,3,5-TRIMETHYLBENZENE NLE NLE NLE NLE J.54 J J.48 J.59 J.59 J.98 U.98 U.98 U 1,3-BUTADIENE NLE U.44 U.44 U.44 U.44 U.44 U.44 U.44 U.44 U.44 U.44 U 1,3-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 U 1.2 U 1.2 U 1,4-DICHLOROBENZENE NLE U.66 J 1.2 U.9 J J J 1.1 J 1 J 1,4-DIOXANE NLE NLE NLE U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U 2,2,4-TRIMETHYLPENTANE NLE NLE NLE NLE.93 U.89 J.47 J.61 J 1.47 J.79 J.7 J.51 J.56 J.47 J 2-BUTANONE NLE CHLOROTOLUENE NLE 73 1 NLE 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 2-HEXANONE NLE NLE NLE U.82 U.82 U.82 U.82 U.82 U.82 U.82 U.82 U.82 U 3-CHLOROPROPENE NLE U.63 U.63 U.63 U.63 U.63 U.63 U.63 U.63 U.63 U.63 U 4-ETHYLTOLUENE NLE NLE NLE NLE J.98 U J.98 U.98 U.98 U.98 U.98 U.98 U 4-METHYL-2-PENTANONE NLE J.45 J J.82 U.41 J.82 U.82 U.82 U.23 J ACETONE BENZENE BENZYLCHLORIDE NLE NLE NLE.5 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U BROMODICHLOROMETHANE NLE 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 BROMOETHENE NLE U.87 U.87 U.87 U.87 U.87 U.87 U.87 U.87 U.87 U.87 U BROMOFORM NLE 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 BROMOMETHANE NLE U.78 U.78 U.78 U.78 U.78 U.78 U.78 U.78 U.78 U.78 U CARBON DISULFIDE NLE U.62 U.53 J.62 U U.62 U.62 U.62 U.62 U CARBON TETRACHLORIDE U 1.3 U.59 J.62 J 1.3 U.54 J.63 J.69 J.57 J.63 J.63 J CHLOROBENZENE NLE U.92 U.92 U.92 U.6 J.92 U.92 U.92 U.92 U.92 U CHLOROETHANE NLE U.53 U.53 U.53 U.53 U.53 U.53 U.53 U.53 U.53 U.53 U CHLOROFORM U.98 U.98 U.54 J.98 U.25 J.98 U.98 U.98 U.98 U.98 U CHLOROMETHANE NLE U CIS-1,2-DICHLOROETHENE NLE NLE.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U CIS-1,3-DICHLOROPROPENE NLE NLE NLE NLE.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U CYCLOHEXANE NLE U U DIBROMOCHLOROMETHANE NLE 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 DICHLORODIFLUOROMETHANE NLE ETHANOL NLE NLE NLE NLE 464 E 266 E 245 E 629 E 439 E 247 E 294 E 286 E 115 E ETHYLACETATE NLE NLE NLE NLE ETHYLBENZENE HEXACHLOROBUTADIENE NLE 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 HEXANE NLE ISOPROPYL ALCOHOL NLE NLE NLE M,P-XYLENES NLE NLE NLE NLE METHYLENE CHLORIDE METHYLMETHACRYLATE NLE NLE NLE 73 NA.82 U NA NA.82 U NA.82 U.82 U NA.82 U.82 U MTBE U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U N-HEPTANE NLE NLE NLE NLE.82 U U.82 U U O-XYLENE NLE NLE NLE PROPYLENE NLE NLE NLE U.86 U.86 U.86 U.86 U.86 U.86 U.86 U.86 U STYRENE NLE J J.81 J.77 J.43 J.85 U.85 U TERT-BUTYL ALCOHOL NLE NLE U.61 U.61 U U U.61 U TETRACHLOROETHYLENE U TETRAHYDROFURAN NLE NLE NLE NLE U U U.47 J.44 J TOLUENE TRANS-1,2-DICHLOROETHENE NLE U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U TRANS-1,3-DICHLOROPROPENE NLE NLE NLE NLE.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U TRICHLOROETHYLENE U.33.3 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\IndoorAirResults_91_211_4 June_24_211_JL 1 of 4 CP4-5 Sample JA /25/211 (ug/m 3 )

67 TABLE 3-6 INDOOR AIR ANALYTICAL RESULTS: FEBRUARY 211 CAMPUS PLAZA 4: GROUNDWATER AOC 2 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Location ID: CP4-1 CP4-1 CP4-2 CP4-2 CP4-2 CP4-4 CP4-4 CP4-4 CP4-5 CP4-5 Sample Type: Sample Sample Sample Sample Sample Sample Duplicate Sample Sample Duplicate Lab Sample ID: JA JA JA JA JA JA JA JA JA JA Date: 1/8/21 2/25/211 9/22/21 9/22/21 2/25/211 9/22/21 2/25/211 2/25/211 9/22/21 2/25/211 Units: (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Table B-1 DOD Risk- Based Residential Air Concentrations 2 COMPOUND 1 Table 2 NJDEP Rapid Residential Generic Nonresidential Action Level 3 Indoor Air Screening Generic Indoor Air Levels 3,4 Screening Levels 3,4 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) TRICHLOROFLUOROMETHANE NLE VINYL ACETATE NLE NLE NLE 21.7 U.7 U.7 U.7 U.7 U.7 U.7 U.7 U.7 U.7 U.7 U VINYL CHLORIDE U.51 U.51 U.51 U.51 U.51 U.51 U.51 U.51 U.51 U.51 U XYLENES (TOTAL) NOTES: AOC - Area of Concern ID - Identifier NLE - No Limit Established NJDEP - New Jersey Department of Environmental Protection E - Value Exceeds Calibration Range J Estimated Value U - Not Detected Above Reporting Limit ug/m 3 - micrograms per cubic meter USACE - United States Army Corps of Engineers DOD Department of Defense Exceedances of NJDEP Nonresidential Generic Indoor Air Screening Levels are indicated by highlighting Exceedances of NJDEP Residential Generic Indoor Air Screening Levels are indicated by bolding CP4-5 Sample JA /25/211 (ug/m 3 ) 1 The compound list for this table includes the compounds analyzed under the TO-15 analysis. 2 Table B-1 USEPA Risk-Based Residential Air Concentrations as are provided in the DOD Vapor Intrusion Handbook document issued by the DOD January 29 and revised November NJDEP Indoor Air Screening Levels as are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March Table 1 is the regulatory screening level used for comparison of the analytical results. K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\IndoorAirResults_91_211_4 June_24_211_JL 2 of 4

68 TABLE 3-6 INDOOR AIR ANALYTICAL RESULTS: FEBRUARY 211 CAMPUS PLAZA 4: GROUNDWATER AOC 2 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey COMPOUND 1 Table 2 NJDEP Rapid Action Level 3 Residential Generic Indoor Air Screening Levels 3,4 Nonresidential Generic Indoor Air Screening Levels 3,4 Location ID: Sample Type: Lab Sample ID: Date: Units: Table B-1 DOD Risk- Based Residential Air Concentrations 2 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE NLE ,1,2,2-TETRACHLOROETHANE NLE ,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE NLE ,1,2-TRICHLOROETHANE NLE ,1-DICHLOROETHANE NLE ,1-DICHLOROETHENE NLE ,2 - DIBROMOETHANE NLE ,2,4-TRICHLOROBENZENE NLE ,2,4-TRIMETHYLBENZENE NLE NLE NLE 7.3 1,2-DICHLOROBENZENE NLE ,2-DICHLOROETHANE NLE ,2-DICHLOROPROPANE NLE ,2-DICHLOROTETRAFLUOROETHANE NLE NLE NLE NLE 1,3,5-TRIMETHYLBENZENE NLE NLE NLE NLE 1,3-BUTADIENE NLE ,3-DICHLOROBENZENE NLE NLE 1,4-DICHLOROBENZENE NLE ,4-DIOXANE NLE NLE NLE.32 2,2,4-TRIMETHYLPENTANE NLE NLE NLE NLE 2-BUTANONE NLE CHLOROTOLUENE NLE 73 1 NLE 2-HEXANONE NLE NLE NLE 31 3-CHLOROPROPENE NLE ETHYLTOLUENE NLE NLE NLE NLE 4-METHYL-2-PENTANONE NLE ACETONE BENZENE BENZYLCHLORIDE NLE NLE NLE.5 BROMODICHLOROMETHANE NLE BROMOETHENE NLE BROMOFORM NLE BROMOMETHANE NLE CARBON DISULFIDE NLE CARBON TETRACHLORIDE CHLOROBENZENE NLE CHLOROETHANE NLE CHLOROFORM CHLOROMETHANE NLE CIS-1,2-DICHLOROETHENE NLE NLE CIS-1,3-DICHLOROPROPENE NLE NLE NLE NLE CYCLOHEXANE NLE DIBROMOCHLOROMETHANE NLE DICHLORODIFLUOROMETHANE NLE ETHANOL NLE NLE NLE NLE ETHYLACETATE NLE NLE NLE NLE ETHYLBENZENE HEXACHLOROBUTADIENE NLE HEXANE NLE ISOPROPYL ALCOHOL NLE NLE NLE 73 M,P-XYLENES NLE NLE NLE NLE METHYLENE CHLORIDE METHYLMETHACRYLATE NLE NLE NLE 73 MTBE N-HEPTANE NLE NLE NLE NLE O-XYLENE NLE NLE NLE 73 PROPYLENE NLE NLE NLE 31 STYRENE NLE TERT-BUTYL ALCOHOL NLE NLE TETRACHLOROETHYLENE TETRAHYDROFURAN NLE NLE NLE NLE TOLUENE TRANS-1,2-DICHLOROETHENE NLE TRANS-1,3-DICHLOROPROPENE NLE NLE NLE NLE TRICHLOROETHYLENE CP4-6 Duplicate JA /22/21 (ug/m 3 ) CP4-6 CP4-6 CP4-BG-1 CP4-BG-1 Sample Sample JA JA JA JA /22/21 2/25/211 9/22/21 2/25/211 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U.81 U.81 U.81 U.81 U.81 U.79 U.79 U.79 U.79 U.79 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 J U.48 J 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U.81 U.81 U.81 U.81 U.81 U.92 U.92 U.92 U.92 U.92 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U.98 U.98 U.98 U.98 U.98 U.44 U.44 U.44 U.44 U.44 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U U 1.2 U.72 U.72 U.72 U.72 U.72 U.51 J.42 J.93 U.93 U.93 U U 1U 1U 1U 1U U.82 U.82 U.82 U.63 U.63 U.63 U.63 U.63 U.98 U.98 U.98 U.98 U.98 U.53 J.41 J.34 J.82 U.82 U J.54 J U.99 1U 1U 1U 1U 1U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U.87 U.87 U.87 U.87 U.87 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U.78 U.78 U.78 U.78 U.78 U.62 U.62 U.62 U.62 U.62 U.61 J.62 J.63 J 1.3 U.69 J.92 U.92 U.92 U.92 U.92 U.53 U.53 U.53 U.53 U.53 U.98 U.98 U.98 U.98 U.98 U U.79 U.79 U.79 U.79 U.91 U.91 U.91 U.91 U.91 U.69 U.69 U.69 U.69 U.48 J 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U E 8.1 E U.61 J.52 J.69 J.87 U.87 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U.67 J.56 J J.63 J J.74 J NA NA.82 U NA.82 U.72 U.72 U.72 U.72 U.72 U U.45 J.61 J.48 J.78 J.87 U.87 U.86 U.86 U U U.85 U.85 U.85 U.85 U.61 U.61 U U.61 U U.27 U.27 U.59 U.59 U.56 J.59 U.56 J U.79 U.79 U.79 U.79 U.91 U.91 U.91 U.91 U.91 U.21 U.21 U.2 J U K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\IndoorAirResults_91_211_4 June_24_211_JL 3 of 4

69 TABLE 3-6 INDOOR AIR ANALYTICAL RESULTS: FEBRUARY 211 CAMPUS PLAZA 4: GROUNDWATER AOC 2 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Location ID: Sample Type: Lab Sample ID: Date: Units: Table B-1 DOD Risk- COMPOUND 1 Table 2 NJDEP Rapid Residential Generic Nonresidential Based Residential Air Action Level 3 Indoor Air Screening Generic Indoor Air Concentrations 2 Levels 3,4 Screening Levels 3,4 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) TRICHLOROFLUOROMETHANE NLE VINYL ACETATE NLE NLE NLE 21 VINYL CHLORIDE XYLENES (TOTAL) CP4-6 Duplicate JA /22/21 (ug/m 3 ) CP4-6 CP4-6 CP4-BG-1 CP4-BG-1 Sample Sample JA JA JA JA /22/21 2/25/211 9/22/21 2/25/211 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) U.7 U.7 U.7 U.7 U.51 U.51 U.51 U.51 U.51 U J.74 J NOTES: AOC - Area of Concern ID - Identifier NLE - No Limit Established NJDEP - New Jersey Department of Environmental Protection E - Value Exceeds Calibration Range J Estimated Value U - Not Detected Above Reporting Limit ug/m 3 - micrograms per cubic meter USACE - United States Army Corps of Engineers DOD Department of Defense Exceedances of NJDEP Nonresidential Generic Indoor Air Screening Levels are indicated by highlighting Exceedances of NJDEP Residential Generic Indoor Air Screening Levels are indicated by bolding 1 The compound list for this table includes the compounds analyzed under the TO-15 analysis. 2 Table B-1 USEPA Risk-Based Residential Air Concentrations as are provided in the DOD Vapor Intrusion Handbook document issued by the DOD January 29 3 NJDEP Indoor Air Screening Levels as are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March Table 1 is the regulatory screening level used for comparison of the analytical results. K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\IndoorAirResults_91_211_4 June_24_211_JL 4 of 4

70 FIGURES

71 CP4-1 Parameter [Criteria] 1/2/4 1/23/6 9/2/6 1/9/7 3/27/7 8/2/7 11/8/7 5/28/8 9/24/8 3/4/9 9/15/9 2/23/1 1/8/1 2/25/11 TETRACHLOROETHYLENE [3] 3.4 U U U 1.4 U J TRICHLOROETHYLENE [3] 2.7 U U 1.1 U 1.1 U 1.1 U 1.1 U J 1.88 J 1.34 J CP4-2 Parameter [Criteria] 1/2/4 1/23/6 9/2/6 1/9/7 3/27/7 8/2/7 11/8/7 5/28/8 9/24/8 3/4/9 9/15/9 2/23/1 9/22/1 2/25/11 TETRACHLOROETHYLENE [3] 3.4 U U 1.4 U 1.4 U J TRICHLOROETHYLENE [3] 2.7 U U 1.1 U 1.1 U 1.1 U 1.1 U J J CP4-SG-1 Parameter [Criteria] 1/21/4 1/24/6 9/2/6 1/1/7 3/28/7 8/21/7 11/8/7 5/28/8 9/24/8 3/5/9 9/15/9 2/23/1 1/8/1 2/25/11 TETRACHLOROETHYLENE [34] 3.4 U 14 U 14 U 1 14 U U J TRICHLOROETHYLENE [27] 2.7 U 11 U 11 U U 11 U U CP4-BG-1 Parameter [Criteria] 9/22/1 2/25/11 TETRACHLOROETHYLENE [3].27 U.27 U TRICHLOROETHYLENE [3] U DRAWING TITLE: PCE & TCE RESULTS FOR SUBSLAB SOIL GAS AND INDOOR AIR SAMPLES CAMPUS PLAZA " = 1' 1/3/212 FIGURE: SCALE: DATE: CP4-SG-2 Parameter [Criteria] 1/21/4 1/24/6 1/1/7 3/28/7 8/21/7 11/8/7 5/28/8 9/24/8 3/5/9 9/15/9 2/23/1 9/22/1 2/25/11 TETRACHLOROETHYLENE [34] 3.4 U 14 U U U J TRICHLOROETHYLENE [27] 2.7 U U J CP4-4 Parameter [Criteria] 1/2/4 1/23/6 9/2/6 1/9/7 3/27/7 8/2/7 11/8/7 5/28/8 9/24/8 3/4/9 9/15/9 2/23/1 9/22/1 2/25/11 TETRACHLOROETHYLENE [3] U 1.4 U.33 U J TRICHLOROETHYLENE [3] 2.7 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U.22 U J 1.34 J CP4-SG-3 Parameter [Criteria] 1/21/4 1/24/6 9/2/6 1/1/7 3/28/7 8/21/7 11/8/7 5/28/8 9/24/8 3/5/9 9/15/9 2/23/1 9/22/1 9/22/1 2/25/11 TETRACHLOROETHYLENE [34] 3.4 U 14 U U U TRICHLOROETHYLENE [27] D 8.76 D 876 D D D CP4-5 Parameter [Criteria] 1/2/4 1/23/6 9/2/6 1/9/7 3/27/7 8/2/7 11/8/7 5/28/8 9/24/8 3/4/9 9/15/9 2/23/1 9/22/1 2/25/11 TETRACHLOROETHYLENE [3] 3.4 U U U 1.4 U 1.4 U.33 U J U TRICHLOROETHYLENE [3] U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U J.97 J.21 U.3 CLIENT NAME: U.S. ARMY CORPS OF ENGINEERS NEW ENGLAND & NEW YORK DISTRICTS PROJECT NAME: INDOOR AIR QUALITY REPORT #7 FORMER RARITAN ARSENAL EDISON, NEW JERSEY CP4-SG-4 Parameter [Criteria] 1/21/4 1/24/6 9/2/6 1/1/7 3/28/7 8/21/7 11/8/7 5/28/8 9/24/8 3/5/9 9/15/9 2/23/1 9/22/1 2/25/11 TETRACHLOROETHYLENE [34] 3.4 U 14 U 14 U U U TRICHLOROETHYLENE [27] U U D 9.29 D D PROJECT MANAGER: P. Bovitz CHECKED BY: D. Krumich CONTRACT No. DELIVERY ORDER NO. DRAWN/MODIFIED BY: J. Lynes DATE CREATED: 1/3/212 3 Raritan Center Parkway CP4-3(Roof)!(!( Parameter [Criteria] 1/2/4 TETRACHLOROETHYLENE [3] 3.4 U TRICHLOROETHYLENE [3] 2.7 U !( h h???!( h!(?!(!(? 278/284 Raritan 28 Raritan Center Parkway Center Parkway CP4-3(Outside) CP4-SG-5 Parameter [Criteria] 1/22/4 1/24/6 9/2/6 1/1/7 3/28/7 8/21/7 11/8/7 5/28/8 9/24/8 9/22/1 9/22/1 2/25/11 TETRACHLOROETHYLENE [34] 3.4 U U U U TRICHLOROETHYLENE [27] D D CP4-6 Parameter [Criteria] 1/2/4 1/23/6 9/2/6 1/9/7 3/27/7 8/2/7 11/8/7 5/28/8 9/24/8 3/4/9 9/15/9 2/23/1 9/22/1 2/25/11 TETRACHLOROETHYLENE [3] 3.4 U U 1.4 U 1.4 U 1.4 U 1.4 U J U TRICHLOROETHYLENE [3] 2.7 U U 1.1 U 1.1 U 1.1 U 1.1 U J 1.29 J.21 U.2 J 274 Raritan Center Parkway Parameter [Criteria] 1/23/6 1/9/7 3/27/7 8/2/7 11/8/7 5/28/8 TETRACHLOROETHYLENE [3] 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U.47 TRICHLOROETHYLENE [3] 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U.38 Legend: h!(? 41 Notes: Ambient Air Sample Location Indoor Air Sample Location Subslab Soil Gas Sample Location Building Boundary Exceeds NJ VIG Criteria (2)(3) Soil Gas Sample Results Indoor Air Sample Results Ambient Air Sample Results 1. Building Area: 73,5 square feet. 2. Subslab Soil Gas and Indoor Air Results compared to Table 1 (Generic Vapor Intrusion Screening Levels) of the NJDEP VIG, March The most stringent (Residential) criteria was used to identify exceedances. NJDEP = New Jersey Department of Environmental Protection PCE = Tetrachloroethylene TCE = Trichloroethylene D = Diluted Result J = Estimated Value U = Undetected Result VIG = Vapor Intrusion Guidance REPORT DATE: January 212 DRAWING: 1663_CP4_IAQ.mxd PATH: K:/Raritan1/RaritanGIS/ Mxd/212_1_IAQ REVISION No. WORK ORDER No. Weston Solutions, Inc SM 25 Campus Drive Edison, New Jersey TEL: (732) Fax: (732) Graphic Scale In Feet RESULTS & CRITERIA ARE LISTED IN MICROGRAMS PER CUBIC METER (ug/m3)

72 3.4 Building 16 Building 16 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 at 16 Fieldcrest Avenue. The building consists of office and warehouse space and is currently occupied by four tenants. Use of the building is primarily industrial. Building 16 is surrounded by a parking lot with a small landscaped and lawn area Prior Investigations Twelve previous rounds of indoor air sampling were conducted at 16 Fieldcrest Avenue from September 23 through May 28 and eleven previous rounds of sub-slab soil gas sampling were conducted from September 23 to May 28. After the May 28 sampling event a vapor recovery system was installed in June 28. The system was installed as a pre-emptive mitigation measure, despite the fact that indoor air concentrations did not exceed the NJDEP VIG indoor air screening levels for VOCs, primarily TCE, PCE, and cis-1,2-dce which are present in soil gas and groundwater beneath the building. Historic sub-slab vapor concentrations in some areas have been greater than ten times the NJDEP soil gas screening levels in which case the NJDEP VIG recommends either on-going monitoring or pre-emptive mitigation to provide protection against potential future exposures attributable to subsurface vapor intrusion to indoor air in this scenario. Geosyntec installed a vapor recovery system consisting of six vent pipes with wind-driven turbines. Performance monitoring reports were submitted on March 17, 29 (Geosyntec, 29a), August 2, 29 (Geosyntec, 29b), and December 15, 29 (Geosyntec, 29c). The December 29 report also requested permission to apply site-specific soil gas screening levels (SGSLs). NJDEP replied via a letter of March 8, 21 (NJDEP, 21) indicating acceptance of SGSLs of 31 micrograms per cubic meter ( g/m 3 ) for TCE and 1 g/m 3 for PCE Current Investigations The most recent progress report by Geosyntec, titled Remedial Progress Report, Passive Sub- Slab Venting System, 16 Fieldcrest Avenue, Former Raritan Arsenal, Edison, New Jersey was submitted to the NJDEP on December 9 th 211. A copy of this report can be found attached in Appendix G. The results from Geosyntec performance monitoring from March 21 thru November 211, show the recovery system is operating as designed and the soil gas concentrations have been decreasing over time. The most recent round of sampling shows that sub-slab soil gas results are below ten times the Ls. The indoor air results show that all of the parameters were either not detected or below NJDEP VIG standards Conclusions and Recommendations It is expected that the vapor recovery system will continue to operate as designed and that the sub-slab soil gas concentrations will continue to decrease overtime. In order to ensure continue effectiveness of the vapor recovery system annual monitoring of the indoor air and sub-slab soil gas is recommended for Building

73 SECTION 4. SAMPLING RESULTS FOR GROUNDWATER AREA OF CONCERN Overview of Groundwater AOC 6 Results This section focuses on the sampling results for sub-slab soil gas and indoor air collected at Fernwood in April 21. Based on past investigations of vapor intrusion potential, this is the only building within Groundwater AOC 6 that requires monitoring under the vapor intrusion monitoring program. The Fernwood building is located within Groundwater AOC 6. The building is currently occupied by Computershare and is being used for commercial/industrial use such as warehouse and office space. The building is surrounded by parking areas and roadways with some landscaped areas. In March 211, a solar powered passive vent system was installed by USACE. The collection of sub-slab soil gas and indoor air samples was completed in April Groundwater AOC 6 Groundwater AOC 6 is located in the central portion of the site. The AOC 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 11 Fernwood Avenue and underlies a portion of soil Area 1, within Raritan Center, and a portion of soil Area 9. This plume extends into the wetland area south of the building located at 45 Fernwood Avenue. The northern extent of Groundwater AOC 6B lies north of the building located at 14 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 52 (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 25 Draft Supplemental Groundwater Data Report summarized findings of the evaluation of groundwater for vapor intrusion potential. A total of nine buildings within Groundwater AOC 6 were previously evaluated to determine which specific buildings would require sub-slab soil gas sampling. Of the nine buildings evaluated, two were not included in the sampling program based on groundwater data near the buildings. The remaining seven buildings were sampled for sub-slab soil gas during the initial sampling effort conducted in March/April 26. Since that time only Fernwood Avenue remains and is included in this report (Report #7) Sub-slab Soil Gas In April 211, USACE collected one round of sub-slab soil gas samples at Fernwood. The table below summarizes the number of sub-slab soil gas samples collected at this building. 4-1

74 Building Fernwood Avenue Sub-slab Soil Gas Samples Parameters/Methods Sampling Date Sampling Round 5 VOCs/TO April 211 Ninth Round Building Survey Prior to collection of indoor air samples, a NJDEP Building Survey and Sampling Form was completed for Fernwood. The building is primarily used as office space with attached warehouses; currently the only tenant is Computershare Inc. The area of SG-1 and IA-1 is an unoccupied warehouse owned by Computershare. Common cleaning products were found in the building evaluated, but generally in small quantities and properly stored. As a result and in most cases, these cleaners may not constitute significant potential VOC sources. In addition, printing inks are used in a small area within the building. However, the containers are stored and used in a clean-room with a separate HVAC system. Sub-slab ports or indoor air sample locations are not located near this cleanroom Indoor Air Indoor air samples were collected in April 211. The table below summarizes the number of indoor air samples collected during the sampling event. Building Fernwood Avenue Indoor Air Samples Ambient Air Samples Parameters/ Method Sampling Date Sampling Round 6 1 VOCs/TO April 211 Ninth Round Meteorological Data Meteorological data for this sampling event was received from the National Climatic Data Center and utilized National Weather Service Data from Newark Liberty International Airport. The meteorological data collected during the sampling of the Groundwater AOC 6 buildings is summarized below. Building Dates Sampled Temperature Range Min-Max ( F) Barometric Pressure Station Average (Inches) Precipitation (Inches) Relative Humidity Average (%) Fernwood Avenue 28 April April

75 CONTAMINANTS OF POTENTIAL CONCERN (COPCs) (1)(2) - GROUNDWATER AOC 6 FORMER RARITAN ARSENAL Comparison of Maximum Groundwater Concentrations by Constituent Using NJDEP's Subsurface Vapor Intrusion Guidance Compared January 212 Table 2C USEPA Table 1 Constituent Screening Level NJDEP Groundwater Maximum Most Recent for Groundwater 3 Screening Levels 4 Sample Location Concentration Sample Date Concentration 5 Sample Date (ug/l) (ug/l) (ug/l) (ug/l) TRICHLOROETHYLENE 5 1 MW-47A 97 7/6/ /6/21 VINYL CHLORIDE 2 1 MW-47A 9.3 7/6/ /6/21 1,1-DICHLOROETHANE 2,2 3,6 MW-47A 8.1 7/6/ /6/21 1,1-DICHLOROETHENE MW-47A 4.5 7/6/ /6/21 BENZENE 5 15 MW-47A 3.4 7/6/ /6/21 CIS-1,2-DICHLOROETHENE MW-47A 35 7/6/ /6/21 TRANS-1,2-DICHLOROETHENE 18 3 MW-47A 2.1 7/6/ /6/21 NOTES: 1 COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table ug/l - micrograms per liter of EPA's November 22 "Draft Guidance for Evaluating the Vapor Intrusion to Indoor Air Pathway from Groundwater and Soils". For purposes o this report, COPCs are those compounds detected in groundwater at concentrations greater than NJDEP VIG groundwater screening levels. 2 Only monitoring wells and shallow groundwater samples within 1 feet of plume and from 25 to present used to create COPC list 3 From EPA's November 22 "Draft Guidance for Evaluating the Vapor Intrusion to Indoor Air Pathway from Groundwater and Soils". 4 NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March Most recent concentration at location where maximum concentration was detected. Bolded and Shaded - Exceedance of NJDEP Table 1 Screening Level TABLE 4-1 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\Table 4-1 AOC6_COPC PAGE 1 of 1

76 Fernwood Avenue Prior Investigations Since March 27, there have been seven sampling events in the Fernwood building, including the current (April 211) sampling round. The Fernwood Avenue building is located to the north of AOC 6A, but within the 1- foot radius of the groundwater plume boundary. The closest sampling locations for which recent groundwater data (24/25) are available are: SGWS219 (about 3 feet north of the building and up-gradient of the plume); SGWS22 (about 27 feet northwest and up-gradient); SGWS221 (about 6 feet to the west and side-gradient); SGWS223 (about 12 feet to the southwest); SGWS229 (within 6 feet to the southeast and down-gradient of the plume); and MW-47A (about 1 feet south and down-gradient). In addition, the closest historical sample (1994) is about 5 fet from the northeast corner of the building at location SGWS113 and did not indicate detectable levels of VOCs. The October 24 groundwater data from SGWS219, SGWS22, and SGWS221 located up-gradient of this building did not show VOC concentrations exceeding the NJDEP Table 1-GW screening levels. The most recent sampling data from the closest points down-gradient of the building indicate slight exceedance of several VOCs above the NJDEP Table 1-GW. SGWS223 exhibited a vinyl chloride concentration at 13 micrograms per liter (µg/l) compared with an NJDEP Table 1-GW screening level of 1 µg/l. SGWS229 exhibited concentrations of vinyl chloride (9.6 µg/l) and TCE (37 µg/l), which exceed the NJDEP Table 1-GW screening level. In 25, down-gradient monitoring well MW-47A exhibited a TCE concentration of 13 µg/l. The concentrations of VOCs detected in MW-47A are demonstrating a consistently decreasing trend, as shown on Figure 7 of the Draft Supplemental Groundwater Data Report (Weston, October 25). This building is primarily located outside of the groundwater plume in a hydraulically up-gradient direction, as shown on Figures 7 and 13 of the Draft Supplemental Groundwater Data Report (Weston, October 25). Shaw and Weston have collected sub-slab soil gas samples from March 26 through March 29. The results of this investigation indicated the possibility of a vapor intrusion pathway as TCE and PCE concentrations were detected in sub-slab soil gas samples above the NJDEP VIG screening levels. Indoor air samples were collected concurrent with the sub-slab soil gas samples and show several concentration of PCE exceeding NJDEP VIG screening levels. A summary of the detection frequency and concentration range of compounds detected in sub-slab soil gas and indoor air quality are provided in Appendix Tables D-1 and D-2, respectively Current Investigation Five sub-slab soil gas samples were collected at Fernwood Avenue on 29 April 211. The sample locations are shown on Figure 4-1. Six indoor air samples plus one ambient sample were collected from April 28 to April 29, 211with locations presented on Figure

77 4.2.3 Sub-slab Soil Gas Results TCE and PCE concentrations were detected in sub-slab soil gas exceeding NJDEP VIG screening levels during the April 211 sampling event at the same sample location (SG-2). All other VOCs were either not detected or were detected at concentrations lower than their respective NJDEP VIG soil gas screening levels. The complete sub-slab soil gas results for the current investigation are shown on Table 4-2. The PCE and TCE sub-slab soil gas sampling results from April 211 are shown on Figure 4-1. The following table provides the VOC concentrations that exceed NJDEP VIG screening levels. Compound TCE (April 21) PCE (April 211) No. of Samples Exceeding Indoor Air Sampling Results NJDEP-approved site specific residential criteria (ug/m 3 ) NJDEP-approved site specific non-residential criteria (ug/m 3 ) Analytical Result (ug/m 3 ) 1 of of During the April 211 sampling events, chloroform was detected in one of the six indoor air samples that exceeded NJDEP VIG screening levels. All other VOCs were either not detected or were detected at concentrations lower than their respective NJDEP VIG soil gas screening levels. The complete indoor air results for the current investigation are shown on Table 4-3. The indoor air sampling results from November 27 through April 211 are shown on Figure 4-1. The following table contains a summary of the indoor air concentrations that exceeded NJDEP VIG screening levels. Compound Chloroform (April 211) No. of Samples Exceeding NJDEP VIG Table 1 Non-Residential Indoor Air Screening Criteria and Exceedances Criterion (ug/m 3 ) NJDEP VIG Table 1 Residential Indoor Air Screening Criteria and Exceedances Criterion (ug/m 3 ) Maximum Concentration Exceeding (ug/m 3 ) 1 of Integrated Discussion of Results The April 211 analytical results indicate that the sub-slab venting mitigation system is operating properly. PCE and TCE concentrations in sub-slab soil gas are greater than NJDEP VIG screening levels at SG-2. Neither TCE nor PCE concentrations were detected in indoor air exceeding the NJDEP VIG screening levels. However, chloroform concentrations were detected for indoor air above the NJDEP VIG screening levels. No other VOCs were detected in soil gas or indoor air samples above their respective screening levels. 4-4

78 4.2.6 Conclusions and Recommendations The historic presence of TCE and PCE in both the sub-slab soil gas and nearby groundwater sampling locations suggested the potential for a vapor intrusion pathway into the Fernwood Avenue building. However, based on the recent analytical results for sub-slab soil gas and indoor air, the installation of the sub-slab venting mitigation system appears to have addressed this potential. Geosyntec is continuing with passive sample monitoring to insure the system is operating properly. 4-5

79 TABLES

80 COMPOUND 1 Residential Generic Soil Gas Screening Levels 2,3 TABLE 4-2 SUBSLAB SOIL GAS ANALYTICAL RESULTS: APRIL FERNWOOD AVE: GROUNDWATER AOC 6 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Location ID: Sample Type: Lab Sample ID: Date: 12FERN-SG-1 Sample JA /29/211 12FERN-SG-2 Sample JA /29/211 12FERN-SG-3 Sample JA /29/211 12FERN-SG-4 Sample JA /29/211 12FERN-SG-5 Sample JA /29/211 Units: (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Nonresidential Generic Soil Gas Screening Levels 2,3 (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE U J U 1,1,2,2-TETRACHLOROETHANE U 5.5 U 5.5 U 5.5 U 5.5 U 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE U 6.1 U 6.1 U 6.1 U 6.1 U 1,1,2-TRICHLOROETHANE U 4.4 U 4.4 U 4.4 U 4.4 U 1,1-DICHLOROETHANE U 3.2 U 3.2 U 3.2 U 3.2 U 1,1-DICHLOROETHENE U 3.2 U 3.2 U 3.2 U 3.2 U 1,2 - DIBROMOETHANE U 6.1 U 6.1 U 6.1 U 6.1 U 1,2,4-TRICHLOROBENZENE U 5.9 U 5.9 U 5.9 U 5.9 U 1,2,4-TRIMETHYLBENZENE NLE NLE U 2.2 J 3 J 4 1,2-DICHLOROBENZENE U 4.8 U 4.8 U 4.8 U 4.8 U 1,2-DICHLOROETHANE U 3.2 U 3.2 U 3.2 U 3.2 U 1,2-DICHLOROPROPANE U 3.7 U 3.7 U 3.7 U 3.7 U 1,2-DICHLOROTETRAFLUOROETHANE NLE NLE 5.6 U 5.6 U 5.6 U 5.6 U 5.6 U 1,3,5-TRIMETHYLBENZENE NLE NLE 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 1,3-BUTADIENE U 1.8 U 1.8 U 1.8 U 1.8 U 1,3-DICHLOROBENZENE U 4.8 U 4.8 U 4.8 U 4.8 U 1,4-DICHLOROBENZENE U 4.8 U 4.8 U 4.8 U 4.8 U 1,4-DIOXANE NLE NLE 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2,2,4-TRIMETHYLPENTANE NLE NLE 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 2-BUTANONE U 2.4 U 1.3 J J 2-CHLOROTOLUENE U 4.1 U 4.1 U 4.1 U 4.1 U 2-HEXANONE NLE NLE 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3-CHLOROPROPENE U 2.5 U 2.5 U 2.5 U 2.5 U 4-ETHYLTOLUENE NLE NLE 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 4-METHYL-2-PENTANONE U 3.3 U 3.3 U 3.3 U 3.3 U ACETONE BENZENE U 2.6 U 2.6 U 2.6 U 2.6 U BENZYLCHLORIDE NLE NLE 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U BROMODICHLOROMETHANE U 5.4 U 5.4 U 5.4 U 5.4 U BROMOETHENE U 3.5 U 3.5 U 3.5 U 3.5 U BROMOFORM U 8.3 U 8.3 U 8.3 U 8.3 U BROMOMETHANE U 3.1 U 3.1 U 3.1 U 3.1 U CARBON DISULFIDE U 2.5 U 2.5 U 2.5 U 2.5 U CARBON TETRACHLORIDE U 5U 5U 5U 5U CHLOROBENZENE U 3.7 U 3.7 U 3.7 U 3.7 U CHLOROETHANE U 2.1 U 2.1 U 2.1 U 2.1 U CHLOROFORM U 3.6 J 3.9 U 2.8 J 3.9 U CHLOROMETHANE U 1.7 U 1.4 J 1.7 U 1.7 U CIS-1,2-DICHLOROETHENE U 1.8 J U 3.2 U CIS-1,3-DICHLOROPROPENE NLE NLE 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U CYCLOHEXANE U 2.8 U 2.8 U 2.8 U 2.8 U DIBROMOCHLOROMETHANE U 6.8 U 6.8 U 6.8 U 6.8 U DICHLORODIFLUOROMETHANE J 3.1 J 3.2 J 2.9 J 2.9 J ETHANOL NLE NLE ETHYLACETATE NLE NLE U ETHYLBENZENE U 3.5 U 3.5 U 3.5 U 3.5 U HEXACHLOROBUTADIENE U 8.5 U 8.5 U 8.5 U 8.5 U K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\Table SG_Rev of 2

81 COMPOUND 1 Residential Generic Soil Gas Screening Levels 2,3 TABLE 4-2 SUBSLAB SOIL GAS ANALYTICAL RESULTS: APRIL FERNWOOD AVE: GROUNDWATER AOC 6 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Location ID: Sample Type: Lab Sample ID: Date: 12FERN-SG-1 Sample JA /29/211 12FERN-SG-2 Sample JA /29/211 12FERN-SG-3 Sample JA /29/211 12FERN-SG-4 Sample JA /29/211 12FERN-SG-5 Sample JA /29/211 Units: (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Nonresidential Generic Soil Gas Screening Levels 2,3 (ug/m 3 ) (ug/m 3 ) HEXANE U 2.8 U 1.5 J 2.8 U 2.8 U ISOPROPYL ALCOHOL NLE NLE 2 U 2 U M,P-XYLENES NLE NLE U J 2.5 J METHYLENE CHLORIDE U 2.8 U 2.8 U 2.8 U 2.8 U METHYLMETHACRYLATE NLE NLE 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U MTBE U 2.9 U 2.9 U 2.9 U 2.9 U N-HEPTANE NLE NLE 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U O-XYLENE NLE NLE 1.7 J 3.5 U 3.5 U 3.5 U 3.5 U PROPYLENE NLE NLE 3.4 U 3.4 U 3.4 U 3.4 U 3.4 U STYRENE U 3.4 U 3.4 U 3.4 U 3.4 U TERT-BUTYL ALCOHOL U 2.4 U 2.4 U 2.4 U 2.4 U TETRACHLOROETHYLENE U TETRAHYDROFURAN NLE NLE 2.4 U 2.4 U 2.4 U 1.7 J 2.4 U TOLUENE J 1.5 J 2.4 J 3 U 3 U TRANS-1,2-DICHLOROETHENE U 3.2 U 3.2 U 3.2 U 3.2 U TRANS-1,3-DICHLOROPROPENE NLE NLE 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U TRICHLOROETHYLENE U TRICHLOROFLUOROMETHANE VINYL ACETATE NLE NLE 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U VINYL CHLORIDE U 2U 2U 2U 2U XYLENES (TOTAL) U J 2.5 J NOTES: AOC - Area of Concern Ave - Avenue ID - Identifier NLE - No Limit Established NJDEP - New Jersey Department of Environmental Protection J Estimated Value U - Not Detected Above Reporting Limit ug/m 3 - micrograms per cubic meter Exceedances of NJDEP Nonresidential Generic Indoor Air Screening Levels are indicated by bolding Exceedances of NJDEP Residential Generic Indoor Air Screening Levels are indicated by highlighting 1 The compound list for this table includes the compounds analyzed under the TO-15 analysis. 2 NJDEP Soil Gas Screening Levels as are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March Table 1 is the regulatory screening level used for comparison of the analytical results. 4 NJDEP approved site specific criteria was used for Tetrachloroethylene and Trichlorethylene. K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\Table SG_Rev of 2

82 TABLE 4-3 INDOOR AIR ANALYTICAL RESULTS: APRIL FERNWOOD AVE: GROUNDWATER AOC 6 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Location ID: Sample Type: Lab Sample ID: 12FERN-1 Sample JA FERN-2 Sample JA FERN-3 Sample JA FERN-4 Sample JA FERN-5 Sample JA FERN-6 JA FERN-7 Sample JA Date: 4/29/211 4/29/211 4/29/211 4/29/211 4/29/211 4/29/211 4/29/211 Units: (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) COMPOUND 1 Table B-1 DOD Table 2 NJDEP Residential Generic Nonresidential Risk-Based Rapid Action Level 3 Indoor Air Screening Generic Indoor Air Residential Air Levels 3,4 Screening Levels 3,4 Concentrations 2 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE NLE U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1,1,2,2-TETRACHLOROETHANE NLE U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE NLE U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1,1,2-TRICHLOROETHANE NLE U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1,1-DICHLOROETHANE NLE U.81 U.81 U.81 U.81 U.81 U.81 U 1,1-DICHLOROETHENE NLE U.79 U.79 U.79 U.79 U.79 U.79 U 1,2 - DIBROMOETHANE NLE U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1,2,4-TRICHLOROBENZENE NLE U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1,2,4-TRIMETHYLBENZENE NLE NLE NLE U 2.2 1,2-DICHLOROBENZENE NLE U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1,2-DICHLOROETHANE NLE U.81 U.81 U.81 U.81 U.81 U.81 U 1,2-DICHLOROPROPANE NLE U.92 U.92 U.92 U.92 U.92 U.92 U 1,2-DICHLOROTETRAFLUOROETHANE NLE NLE NLE NLE 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1,3,5-TRIMETHYLBENZENE NLE NLE NLE NLE J.64 J.64 J.93 J.98 U.84 J 1,3-BUTADIENE NLE U.44 U.44 U.44 U.44 U.44 U.44 U 1,3-DICHLOROBENZENE NLE NLE 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1,4-DICHLOROBENZENE NLE U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1,4-DIOXANE NLE NLE NLE U.72 U.72 U.72 U.72 U.72 U.72 U 2,2,4-TRIMETHYLPENTANE NLE NLE NLE NLE.93 U 1.93 U.93 U.93 U.61 J.93 U 2-BUTANONE NLE CHLOROTOLUENE NLE 73 1 NLE 1U 1U 1U 1U 1U 1U 1U 2-HEXANONE NLE NLE NLE J.82 U.82 U.82 U.45 J.82 U.45 J 3-CHLOROPROPENE NLE U.63 U.63 U.63 U.63 U.63 U.63 U 4-ETHYLTOLUENE NLE NLE NLE NLE U.48 J.54 J.69 J.98 U.98 U 4-METHYL-2-PENTANONE NLE U.82 U.82 U.82 U.45 J ACETONE BENZENE J.42 J.35 J.35 J J.42 J BENZYLCHLORIDE NLE NLE NLE.5 1U 1U 1U 1U 1U 1U 1U BROMODICHLOROMETHANE NLE U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U BROMOETHENE NLE U.87 U.87 U.87 U.87 U.87 U.87 U BROMOFORM NLE U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U BROMOMETHANE NLE U.78 U.78 U.78 U.78 U.78 U.78 U CARBON DISULFIDE NLE U.62 U.62 U.62 U.62 U.62 U.62 U CARBON TETRACHLORIDE U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U CHLOROBENZENE NLE U.92 U.92 U.92 U.92 U.92 U.92 U CHLOROETHANE NLE U.53 U.53 U.53 U.53 U.53 U.53 U CHLOROFORM U.98 U.98 U.98 U.68 J CHLOROMETHANE NLE CIS-1,2-DICHLOROETHENE NLE NLE.79 U.79 U.79 U.79 U.79 U.79 U.79 U CIS-1,3-DICHLOROPROPENE NLE NLE NLE NLE.91 U.91 U.91 U.91 U.91 U.91 U.91 U CYCLOHEXANE NLE U.69 U.69 U.69 U 1.3 DIBROMOCHLOROMETHANE NLE U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U DICHLORODIFLUOROMETHANE NLE ETHANOL NLE NLE NLE NLE 251 E 49 E E ETHYLACETATE NLE NLE NLE NLE ETHYLBENZENE J.65 J.69 J.69 J.87 U.41 J HEXACHLOROBUTADIENE NLE U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U HEXANE NLE J.39 J.49 J.42 J.92 ISOPROPYL ALCOHOL NLE NLE NLE M,P-XYLENES NLE NLE NLE NLE U 1.2 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\Table IAQ 1 of 2

83 TABLE 4-3 INDOOR AIR ANALYTICAL RESULTS: APRIL FERNWOOD AVE: GROUNDWATER AOC 6 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Location ID: 12FERN-1 12FERN-2 12FERN-3 12FERN-4 12FERN-5 Sample Type: Sample Sample Sample Sample Sample Lab Sample ID: JA JA JA JA JA Date: 4/29/211 4/29/211 4/29/211 4/29/211 4/29/211 Units: (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Table B-1 DOD Risk-Based Residential Air Concentrations 2 12FERN-6 12FERN-7 Sample JA JA /29/211 4/29/211 (ug/m 3 ) (ug/m 3 ) COMPOUND 1 Table 2 NJDEP Residential Generic Nonresidential Rapid Action Level 3 Indoor Air Screening Generic Indoor Air Levels 3,4 Screening Levels 3,4 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) METHYLENE CHLORIDE U.69 U.69 U.69 U.69 U.69 U.69 METHYLMETHACRYLATE NLE NLE NLE U.82 U.82 U.82 U.82 U.82 U MTBE U.72 U.72 U.72 U.72 U.72 U.72 U N-HEPTANE NLE NLE NLE NLE J.61 J.66 J U 1 O-XYLENE NLE NLE NLE J.56 J.61 J.61 J.87 U.48 J PROPYLENE NLE NLE NLE U.86 U.86 U.86 U.86 U.86 U.86 U STYRENE NLE U 1.4 TERT-BUTYL ALCOHOL NLE NLE J U.61 U TETRACHLOROETHYLENE J U.27 U.27 U.27 U.32 TETRAHYDROFURAN NLE NLE NLE NLE.59 U.59 U.59 U.59 U.59 U.59 U.59 U TOLUENE TRANS-1,2-DICHLOROETHENE NLE U.79 U.79 U.79 U.79 U.79 U.79 U TRANS-1,3-DICHLOROPROPENE NLE NLE NLE NLE.91 U.91 U.91 U.91 U.91 U.91 U.91 U TRICHLOROETHYLENE U.21 U.21 U.21 U.86 TRICHLOROFLUOROMETHANE NLE VINYL ACETATE NLE NLE NLE 21.7 U.7 U.7 U.7 U.7 U.7 U.7 U VINYL CHLORIDE U.51 U.51 U.51 U.51 U.51 U.51 U XYLENES (TOTAL) U 1.7 NOTES: AOC - Area of Concern Ave - Avenue ID - Identifier NLE - No Limit Established NJDEP - New Jersey Department of Environmental Protection E - Value Exceeds Calibration Range J Estimated Value U - Not Detected Above Reporting Limit ug/m 3 - micrograms per cubic meter DOD Department of Defense Exceedances of NJDEP Nonresidential Generic Indoor Air Screening Levels are indicated by bolding Exceedances of NJDEP Residential Generic Indoor Air Screening Levels are indicated by highlighting 1 The compound list for this table includes the compounds analyzed under the TO-15 analysis. 2 Table B-1 DOD Risk-Based Residential Air Concentrations as are provided in the DOD Vapor Intrusion Handbook document issued by the DOD January 29 and revised November NJDEP Indoor Air Screening Levels as are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March Table 1 is the regulatory screening level used for comparison of the analytical results. K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\Table IAQ 2 of 2

84 12FERN-SG-4 Parameter [Criteria] 3/29/6 9/29/6 4/6/7 11/13/7 6/2/8 1/2/8 2/13/9 9/11/9 4/29/11 TETRACHLOROETHYLENE [34] U 14 U 14 U TRICHLOROETHYLENE [61] U 11 U D FERN-SG-5 12FERN-4 Parameter [Criteria] 9/29/6 4/5/7 11/13/7 6/19/8 1/2/8 2/13/9 9/11/9 4/29/11 TETRACHLOROETHYLENE [3] U 1.4 U J.27 U TRICHLOROETHYLENE [3] 1.1 U 1.1 U 1.1 U J.21 U.21 U Parameter [Criteria] 3/29/6 9/29/6 4/6/7 11/13/7 6/2/8 1/2/8 2/13/9 9/24/9 4/29/11 TETRACHLOROETHYLENE [34] 14 U 14 U 14 U 14 U J 1.5 TRICHLOROETHYLENE [61] 11 U 11 U 11 U 11 U U.86 U DRAWING TITLE: PCE & TCE RESULTS FOR SUBSLAB SOIL GAS AND INDOOR AIR SAMPLES FERNWOOD AVENUE 4-1 1" = 6' 1/3/212 FIGURE: SCALE: DATE: 12FERN-5 Parameter [Criteria] 9/29/6 4/5/7 11/13/7 6/19/8 1/2/8 2/13/9 9/11/9 4/29/11 TETRACHLOROETHYLENE [3] 1.4 U 1.4 U 1.4 U U.34 J.27 U TRICHLOROETHYLENE [3] 1.1 U 1.1 U 1.1 U U.21 U.21 U 12FERN-SG-3 Parameter [Criteria] 3/29/6 9/29/6 4/6/7 6/3/8 1/2/8 2/13/9 9/11/9 4/29/11 TETRACHLOROETHYLENE [34] U 14 U J 1.1 U TRICHLOROETHYLENE [61] D D FERN-3 Parameter [Criteria] 9/29/6 4/5/7 11/13/7 6/19/8 1/2/8 2/13/9 9/11/9 4/29/11 TETRACHLOROETHYLENE [3] 1.4 U 1.4 U 1.4 U J.2 U.27 J.27 U TRICHLOROETHYLENE [3] 1.1 U 1.1 U 1.1 U U U.21 U 12FERN-SG-2 Parameter [Criteria] 3/29/6 9/29/6 4/6/7 6/3/8 1/2/8 2/13/9 9/11/9 4/29/11 TETRACHLOROETHYLENE [34] U 14 U TRICHLOROETHYLENE [61] D ?!(?!( 12 FERNWOOD AVENUE?!( CLIENT NAME: U.S. ARMY CORPS OF ENGINEERS NEW ENGLAND & NEW YORK DISTRICTS PROJECT NAME: INDOOR AIR QUALITY REPORT #7 FORMER RARITAN ARSENAL EDISON, NEW JERSEY 12FERN-2 Parameter [Criteria] 9/29/6 4/5/7 11/13/7 6/19/8 1/2/8 2/13/9 9/11/9 4/29/11 TETRACHLOROETHYLENE [3] 1.4 U 1.4 U 1.4 U TRICHLOROETHYLENE [3] 1.1 U 1.1 U 1.1 U U.48?!( 168 FERNWOOD AVENUE PROJECT MANAGER: P. Bovitz CHECKED BY: D. Krumich CONTRACT No. DELIVERY ORDER NO. DRAWN/MODIFIED BY: J. Lynes DATE CREATED: 1/3/212 12FERN-SG-1 12FERN-1 Parameter [Criteria] 9/29/6 4/5/7 11/13/7 6/19/8 1/2/8 2/13/9 9/11/9 4/29/11 TETRACHLOROETHYLENE [3] U 1.4 U J.26 J TRICHLOROETHYLENE [3] 1.1 U 1.1 U 1.1 U U U.64 12FERN-6 12FERN-7 Parameter [Criteria] 2/13/9 9/11/9 4/29/11 TETRACHLOROETHYLENE [3] J.32 TRICHLOROETHYLENE [3].7.21 U.86 Parameter [Criteria] 3/28/6 9/29/6 4/6/7 11/13/7 6/2/8 1/2/8 2/13/9 9/11/9 4/29/11 TETRACHLOROETHYLENE [34] U 14 U J 8.1 TRICHLOROETHYLENE [61] 11 U 11 U 11 U U Graphic Scale In Feet Parameter [Criteria] 9/29/6 4/5/7 11/13/7 6/19/8 1/2/8 2/13/9 9/11/9 4/29/11 TETRACHLOROETHYLENE [3] 1.4 U 1.4 U 1.4 U.33 U.27 U.2 U.27 J.27 U TRICHLOROETHYLENE [3] 1.1 U 1.1 U 1.1 U U.21 U.21 U.21 U!(?!(!( h Legend: h!(? 52 Notes: Ambient Air Sample Location Indoor Air Sample Location Subslab Soil Gas Sample Location Building Boundary Exceeds NJ VIG Criteria (2)(3)(4) Soil Gas Sample Results Indoor Air Sample Results Ambient Air Sample Result 1. Building Area: 141, square feet. 2. Indoor Air Results compared to Table 1 (Generic Vapor Intrusion Screening Levels) of the NJDEP VIG, March Subslab Soil Gas compared to the NJDEP approved building specific criteria of TCE (Residential: 61 ug/m3 and Nonresidential 31 ug/m3) and PCE (Residential: 34 ug/m3 and Nonresidential 1 ug/m3) 4. The most stringent (Residential) criteria was used to identify exceedances. NJDEP = New Jersey Department of Environmental Protection PCE = Tetrachloroethylene TCE = Trichloroethylene D = Diluted Result J = Estimated Value U = Undetected Result VIG = Vapor Intrusion Guidance RESULTS & CRITERIA ARE LISTED IN MICROGRAMS PER CUBIC METER (ug/m3) REPORT DATE: January 212 DRAWING: 1665_12_168_Fernwood_IAQ.mxd PATH: K:/Raritan1/RaritanGIS/ Mxd/212_1_IAQ REVISION No. WORK ORDER No. Weston Solutions, Inc SM 25 Campus Drive Edison, New Jersey TEL: (732) Fax: (732)

85 SECTION 5. SAMPLING RESULTS FOR GROUNDWATER AREA OF CONCERN Overview of Groundwater AOC 8 Results This section focuses on sampling results for sub-slab soil gas and indoor air collected from September 21, October 21, and February 211 to evaluate the potential for vapor intrusion at five buildings in the vicinity of Groundwater AOC 8. Prior to the discussion of the sub-slab soil gas and indoor air results, a description of historic groundwater contaminant concentrations are presented. The plume boundaries, as revised per the Supplemental Groundwater Data Report (Weston 26) were those that defined the extent of the groundwater plume for identification of buildings requiring evaluation of the potential for vapor intrusion. Per the recommendations from the Indoor Air Quality Semi-Annual Reports #3, #4, #5 and #6 (Weston, 28, Shaw 21), five buildings are continuing to be evaluated and/or monitored for vapor intrusion issues in AOC 8. These buildings are: EPA Building 1; EPA Building 18; EPA Building 2; EPA Building 25; and EPA Building 29. The buildings are surrounded by parking lots, roads, industrial railroads, and open/landscaped areas. All buildings are occupied by EPA personnel Groundwater AOC 8 Groundwater AOC 8 is located near the northern boundary of the former Arsenal in the central portion of the site, in the vicinity of Area 18E. On the basis of groundwater data from the Supplemental Groundwater Data Report, Groundwater AOC 8 has been subdivided into three plumes AOC 8A/B, AOC 8B, and, AOC 8D. The footprint of AOC 8A/B encompasses the former motor pool (Building 238) and the former GSA automotive shop (Building 241). AOC 8C encompasses the area along the southern investigation boundary of the dump area in Area 18G and the former dump area. Groundwater AOC 8D is located in the vicinity of Area 1. There are no buildings within 1 ft of AOC 8C and AOC 8D. Current COCs in Groundwater AOC 8 are TCE, PCE, and vinyl chloride, as described in the 26 Supplemental Groundwater Data Report (Table 5-1). The location of the monitoring wells and shallow groundwater screening sample locations for AOC 8 are shown on Figures 5 and 11 of the 26 Supplemental Groundwater Data Report. The historic COCs in Groundwater AOC 8 are VOCs such as TCE, PCE, total 1,2-DCE, and chloroform, as described in the Final Site- Wide Hydrogeology Report (Weston, 1996) and the 22 Draft Final Groundwater Natural Attenuation Report (NAR). TCE concentration contours in groundwater for AOC 8 are shown on Figure 11 of the 26 Supplemental Groundwater Data Report. Groundwater analytical data from 1994 to 25 was reviewed and compared to screening levels presented in Table 1 of NJDEP s VIG (March 27) to characterize the COPCs in Groundwater AOC 8. Table 5-1 from this report provides data for all VOCs historically detected in 5-1

86 groundwater samples within the bounds of Groundwater AOC 8. The historic COCs in Groundwater AOC 8 were TCE, PCE, benzene, and vinyl chloride. The July 28 Groundwater Remedial Action Work Plan (GWRAWP) recommended monitored natural attenuation (MNA) as the remedial action for Groundwater AOCs 8C and 8D. Preparation of a RAWP for Groundwater AOC 8A/B will be based on further investigation (associated with Area 18E) and additional IAQ results. Due to VOC concentrations detected in soil and groundwater within AOC 8A/B, IAQ sampling has been conducted at buildings within 1 ft of the groundwater plume Sub-slab Soil Gas In September 21 and February 211, the USACE collected sub-slab soil gas samples at five buildings (Buildings 1, 18, 2, 25, and 29) on EPA Property within 1 ft of Groundwater AOCs 8A and 8B. Due to SUMMA canister malfunctions in the September 21 sampling event, one sub-slab soil gas sample was collected from Building 25 and one from Building 29 on 8 October 21. The table below summarizes the number of sub-slab soil gas samples collected during each sampling event at each building. Building Building 1 Building 18 Building 2 Building 25 Sub-slab Soil Gas Samples Parameters/Methods Sampling Date Sampling Round 4 VOCs/TO September 21 Thirteenth 3 VOCs/TO February 211 Fourteenth 3 VOCs/TO September 21 Twelfth 3 VOCs/TO February 211 Thirteenth 2 VOCs/TO September 21 Seventeenth 1 VOCs/TO February 211 Eighteenth 5 VOCs/TO September 21 Fourteenth 1 VOCs/TO-15 8 October 211 Fourteenth 7 VOCs/TO February 211 Fifteenth Building 29 * Including duplicate samples. 5 VOCs/TO September 21 Eleventh 1 VOCs/TO-15 8 October 21 Eleventh 9 VOCs/TO February 211 Twelfth VOC Results of the sub-slab soil gas in the vicinity of Groundwater AOC 8 are discussed in the following building-specific subsections of this report and are provided in Tables 5-2 through Shaded values in the tables indicate concentrations exceeding the NJDEP VIG nonresidential screening levels whereas bolded and shaded values indicate concentrations exceeding NJDEP VIG residential sub-slab soil gas screening levels. 5-2

87 5.1.3 Building Survey Prior to collection of indoor air 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 A. However, Buildings 25 and 29 have had renovations within the vicinity of subslab soil gas sampling ports prior to and during the September 21 sampling event Indoor Air In September 21 and February 211, the USACE collected indoor air samples and sub-slab soil gas samples at five EPA buildings (Buildings 1, 18, 2, 25, and 29) within 1 ft of Groundwater AOCs 8A/8B. Due to SUMMA canister malfunctions in the September 21 sampling event, one indoor air sample and a duplicate sample were collected from Building 2 on 7-8 October 21. The table below summarizes the number of indoor air samples collected during each sampling event at each building. Building Building 1 Building 18 Indoor Air Samples Ambient Air Samples Sampling Date Sampling Round September 21 Thirteenth Round February 211 Fourteenth Round September 21 Tenth Round February 211 Twelfth Round September 21 Sixteenth Round Building October 21 Sixteenth Round February 211 Seventeenth Round Building September 21 Thirteenth Round February 211 Fourteenth Round Building 29 * Including duplicate samples September 21 Eleventh Round February 211 Twelfth Round The indoor air analytical results for the buildings within Groundwater AOC 8 are discussed in the following subsections of this report. Shaded values in the tables indicate concentrations exceeding the NJDEP VIG non-residential screening levels whereas bolded and shaded values indicate concentrations exceeding NJDEP VIG residential sub-slab soil gas screening levels Meteorological Data Meteorological data utilized during each sampling event was obtained from the National Climatic Data Center for Newark Liberty International Airport. The meteorological data 5-3

88 collected during the sampling of the Groundwater AOC 8 buildings is summarized below. See the attached CD for the complete meteorological data. Dates Sampled Temperature Range Min-Max ( F) Barometric Pressure Station Average (Inches) Precipitation (Inches) Relative Humidity Average (%) 23 September September October October February February

89 CONTAMINANTS OF POTENTIAL CONCERN (COPCs) (1)(2) - GROUNDWATER AOC 8 FORMER RARITAN ARSENAL Comparison of Maximum Groundwater Concentrations by Constituent Using NJDEP's Subsurface Vapor Intrusion Guidance Compared January 212 Table 2C USEPA Table 1 Constituent Screening Level NJDEP Groundwater Maximum Most Recent for Groundwater 3 Screening Levels 4 Sample Location Concentration Sample Date Concentration 5 Sample Date (ug/l) (ug/l) (ug/l) (ug/l) TETRACHLOROETHYLENE 5 1 MW /1/ /1/25 TRICHLOROETHYLENE 5 1 MW /18/ /18/29 1,1-DICHLOROETHENE MW J 9/18/29.47 J 9/18/29 ACETONE 22, 1,9, EPA /23/ /23/25 CHLOROFORM 8 7 MW /18/ /18/29 CIS-1,2-DICHLOROETHENE EPA /23/ /23/25 ETHYLBENZENE 7 61, EPA /23/ /23/25 METHYLENE CHLORIDE MW J 9/18/29.56 J 9/18/29 MTBE 12, 78 MW /18/ /18/29 TRANS-1,2-DICHLOROETHENE 18 3 MW /18/ /18/29 XYLENES (TOTAL) 6 22, 7,6 EPA /23/ /23/25 NOTES: 1 COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table ug/l - micrograms per liter of EPA's November 22 "Draft Guidance for Evaluating the Vapor Intrusion to Indoor Air Pathway from Groundwater and Soils". For purposes oj - Estimated Value this report, COPCs are those compounds detected in groundwater at concentrations greater than NJDEP VIG groundwater screening levels. 2 Only monitoring wells and shallow groundwater samples within 1 feet of plume and from 25 to present used to create COPC list 3 From EPA's November 22 "Draft Guidance for Evaluating the Vapor Intrusion to Indoor Air Pathway from Groundwater and Soils". 4 NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March Most recent concentration at location where maximum concentration was detected. 6 Groundwater screening level listed represents a total xylene concentration, not individual isomers. TABLE 5-1 Bolded and Shaded - Exceedance of NJDEP Table 1 Screening Level K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\Table 5-1 AOC 8_COPC PAGE 1 of 1

90 5.2 EPA Building 1 EPA Building 1 is located within the western portion of Groundwater AOC 8 and up-gradient of Building 25. Building 1 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 and lawn area. This building has never been identified as an area of investigation or a former DOD occupancy requiring investigation. From January 25 through March 21, 12 previous sampling events were conducted by USACE. During the September 21 and February 211 sampling events, investigation activities include sub-slab soil gas and indoor air sample collection Prior Investigations Sub-slab soil gas samples have been collected at Building 1 since December 24 by the EPA and USACE. TCE, PCE, benzene, and chloroform concentrations have been detected in soil gas and indoor air exceeding the NJDEP VIG screening levels. The Area 18E soil and groundwater historic analytical results, less than 1 ft from Building 1, indicated the presence of TCE in both medias. The data suggest that soil may be a potential source of TCE concentrations in sub-slab soil gas beneath and within Building 1. During EPA investigations, TCE was also detected in the indoor air within Building 1; therefore, the EPA installed a sub-slab depressurization system at Building 1. Since the installation of the sub-slab remediation system, PCE concentrations have been detected in indoor air exceeding NJDEP VIG screening levels. PCE and TCE have also been detected in sub-slab soil gas exceeding NJDEP VIG screening levels. Methylene chloride concentrations in indoor air did exceed NJDEP VIG screening levels. However, this VOC was not detected in the groundwater plume associated with AOC 8 and is considered a non-dod compound of concern. In addition, it was not detected in indoor air and is not considered a threat. Continued semiannual monitoring of the sub-slab remediation system was recommended by the USACE. A summary of the detection frequency and concentration range of compounds detected in subslab soil gas and indoor air are provided in Appendix Table E-1 and E-2, respectively Current Investigation Two sub-slab soil gas locations and two indoor air locations were sampled during September 21 and February 211. Sub-slab soil gas and indoor air sample locations for EPA Building 1 are shown on Figure Sub-slab Soil Gas Results In September 21, TCE concentrations were detected above the NJDEP VIG screening levels at both sub-slab soil gas locations. In February 211, there were no VOCs exceeding NJDEP VIG soil gas screening levels. 5-5

91 The complete sub-slab soil gas results for the current investigation are shown on Table 5-2. The following table contains a summary of the sub-slab soil gas exceeding NJDEP VIG screening levels. Compound TCE (September 21) No. of Samples Exceeding NJDEP VIG Table 1 Residential Sub-slab Soil Gas Screening Criteria and Exceedances Criterion (ug/m 3 ) NJDEP VIG Table 1 Non- Residential Sub-slab Soil Gas Screening Criteria and Exceedances Criterion (ug/m 3 ) Range of Concentrations Exceeding (ug/m 3 ) 2 of Indoor Air Sampling Results During the September 21 and February 211 sampling events, there were no VOC concentrations exceeding the NJDEP VIG screening levels for indoor air. The complete indoor air sampling results for the current investigations are shown on Table Integrated Discussion of Results Sub-slab and indoor air analytical results are from September 21 and February 211 sampling events. TCE was the only compound detected in sub-slab soil gas exceeding NJDEP VIG screening levels in September 21. However, there were no exceedances in sub-slab soil gas during the February 211 sampling event. The indoor air analytical results indicated no VOC concentrations exceeding the NJDEP VIG screening levels Conclusions and Recommendations VOCs have not been migrating into the indoor air at concentrations of concern likely due to the installation of a remedial system. There were elevated TCE concentrations in soil gas above NJDEP VIG screening levels during the September 21 sampling event. However, indoor air samples did not contain VOC concentrations above the NJDEP VIG screening levels in either sampling event. Semi-annual monitoring of the remedial system has proven that the system is operating properly. It is recommended that the monitoring continue for another year at which time the data will be evaluated to determine if additional sampling is necessary or if the monitoring can be curtailed as per the recommendations of the proposed GW/VI FS. 5-6

92 TABLES

93 TABLE 5-2 SUBSLAB SOIL GAS ANALYTICAL RESULTS: FEBRUARY 211 EPA BUILDING 1: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey COMPOUND 1 Residential Generic Soil Gas Screening Levels 2,3 Location ID: Sample Type: Lab Sample ID: Date: Units: Nonresidential Generic Soil Gas Screening Levels 2,3 1-SG-3 Duplicate JA /24/21 (ug/m 3 ) 1-SG-3 1-SG-3 1-SG-3 1-SG-4 1-SG-4 1-SG-4 Sample Duplicate Sample Duplicate Sample Sample JA /24/21 (ug/m 3 ) JA /23/211 (ug/m 3 ) JA /23/211 (ug/m 3 ) JA /24/21 (ug/m 3 ) JA /24/21 (ug/m 3 ) JA /23/211 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 1,1,2,2-TETRACHLOROETHANE U 5.5 U 5.5 U 5.5 U 5.5 U 5.5 U 5.5 U 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 1,1,2-TRICHLOROETHANE U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 1,1-DICHLOROETHANE U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 1,1-DICHLOROETHENE U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 1,2 - DIBROMOETHANE U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 1,2,4-TRICHLOROBENZENE U 5.9 U 5.9 U 5.9 U 5.9 U 5.9 U 5.9 U 1,2,4-TRIMETHYLBENZENE NLE NLE 3.9 U 3.9 U U 3.9 U 3.9 U 1,2-DICHLOROBENZENE U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 1,2-DICHLOROETHANE U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 1,2-DICHLOROPROPANE U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 1,2-DICHLOROTETRAFLUOROETHANE NLE NLE 5.6 U 5.6 U 5.6 U 5.6 U 5.6 U 5.6 U 5.6 U 1,3,5-TRIMETHYLBENZENE NLE NLE 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 1,3-BUTADIENE U 1.8 U 1.8 U 1.8 U 1.8 U 1.8 U 1.8 U 1,3-DICHLOROBENZENE U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 1,4-DICHLOROBENZENE J 4.7 J 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 1,4-DIOXANE NLE NLE 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2,2,4-TRIMETHYLPENTANE NLE NLE 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 2-BUTANONE J 2.4 U CHLOROTOLUENE U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 2-HEXANONE NLE NLE 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3-CHLOROPROPENE U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 4-ETHYLTOLUENE NLE NLE 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 4-METHYL-2-PENTANONE U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U ACETONE BENZENE U 2.6 U 2.6 U 2.6 U 2.6 U 2.6 U 2.6 U BENZYLCHLORIDE NLE NLE 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U BROMODICHLOROMETHANE U 5.4 U 5.4 U 5.4 U 5.4 U 5.4 U 5.4 U BROMOETHENE U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U BROMOFORM U 8.3 U 8.3 U 8.3 U 8.3 U 8.3 U 8.3 U BROMOMETHANE U 3.1 U 3.1 U 3.1 U 3.1 U 3.1 U 3.1 U CARBON DISULFIDE U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U CARBON TETRACHLORIDE U 5 U 5 U 5 U 5 U 5 U 5 U CHLOROBENZENE U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U CHLOROETHANE U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U CHLOROFORM J 2.3 J 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U CHLOROMETHANE U 1.7 U 1.7 U 1.7 U 1.4 J 1.7 U 1.2 J CIS-1,2-DICHLOROETHENE U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U CIS-1,3-DICHLOROPROPENE NLE NLE 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U CYCLOHEXANE U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U DIBROMOCHLOROMETHANE U 6.8 U 6.8 U 6.8 U 6.8 U 6.8 U 6.8 U DICHLORODIFLUOROMETHANE J 2.8 J 2 J 2 J 2.9 J 2.8 J 2.3 J ETHANOL NLE NLE ETHYLACETATE NLE NLE 2.9 U 2.9 U 2 2 J 2.9 U 2.9 U 3.6 ETHYLBENZENE U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U HEXACHLOROBUTADIENE U 8.5 U 8.5 U 8.5 U 8.5 U 8.5 U 8.5 U HEXANE J 2.8 U 2.8 U J ISOPROPYL ALCOHOL NLE NLE U 2 U K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\SoilGasResults_91_211_9 June_24_211_JL 1 of 2

94 TABLE 5-2 SUBSLAB SOIL GAS ANALYTICAL RESULTS: FEBRUARY 211 EPA BUILDING 1: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey COMPOUND 1 Residential Generic Soil Gas Screening Levels 2,3 Location ID: Units: Nonresidential Generic Soil Gas Screening Levels 2,3 1-SG-3 Duplicate JA /24/21 (ug/m 3 ) 1-SG-3 1-SG-3 1-SG-3 1-SG-4 (ug/m 3 ) (ug/m 3 ) M,P-XYLENES NLE NLE 3.5 U 3.5 U 2.6 J 2.5 J 3.5 U 3.5 U 3.5 U METHYLENE CHLORIDE U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 3.1 METHYLMETHACRYLATE NLE NLE NA NA 3.3 U 3.3 U NA NA 3.3 U MTBE U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U N-HEPTANE NLE NLE 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U O-XYLENE NLE NLE 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U PROPYLENE NLE NLE 3.4 U 3.4 U J 3.4 U 1.9 J 2.7 J STYRENE U 3.4 U 3.4 U 3.4 U 3.4 U 3.4 U 3.4 U TERT-BUTYL ALCOHOL U 2.4 U 2.4 U 2.4 U 2.4 U 2.4 U 2.4 U TETRACHLOROETHYLENE U TETRAHYDROFURAN NLE NLE 2.4 U 2.4 U 2.4 U 2.4 U 2.4 U 2.4 U 2.4 U TOLUENE J TRANS-1,2-DICHLOROETHENE U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U TRANS-1,3-DICHLOROPROPENE NLE NLE 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U TRICHLOROETHYLENE TRICHLOROFLUOROMETHANE J 4.5 U 4.5 U 4.5 U 4.5 U 4.5 U 4.5 U VINYL ACETATE NLE NLE 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U VINYL CHLORIDE U 2 U 2 U 2 U 2 U 2 U 2 U XYLENES (TOTAL) U 3.5 U 2.6 J 2.5 J 3.5 U 3.5 U 3.5 U NOTES: AOC - Area of Concern ID - Identifier NLE - No Limit Established NJDEP - New Jersey Department of Environmental Protection J Estimated Value U - Not Detected Above Reporting Limit ug/m 3 - micrograms per cubic meter EPA - United States Environmental Protection Agency Exceedances of NJDEP Nonresidential Generic Indoor Air Screening Levels are indicated by highlighting Exceedances of NJDEP Residential Generic Indoor Air Screening Levels are indicated by bolding Sample Type: Lab Sample ID: Date: Sample Duplicate Sample Duplicate 1-SG-4 Sample 1-SG-4 Sample JA JA JA JA JA JA /24/21 2/23/211 2/23/211 9/24/21 9/24/21 2/23/211 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1 The compound list for this table includes the compounds analyzed under the TO-15 analysis. 2 NJDEP Soil Gas Screening Levels as are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March Table 1 is the regulatory screening level used for comparison of the analytical results. K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\SoilGasResults_91_211_9 June_24_211_JL 2 of 2

95 TABLE 5-3 INDOOR AIR ANALYTICAL RESULTS: FEBRUARY 211 EPA BUILDING 1: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey COMPOUND 1 Table 2 NJDEP Rapid Action Level 3 Residential Generic Indoor Air Screening Levels 3,4 Nonresidential Generic Indoor Air Screening Levels 3,4 Location ID: Sample Type: Lab Sample ID: Date: Units: Table B-1 DOD Risk- Based Residential Air Concentrations BG-1 Duplicate Sample Duplicate Sample Duplicate Sample Sample JA JA JA JA JA JA JA JA /24/21 9/24/21 2/23/211 2/23/211 9/24/21 9/24/21 2/23/211 9/24/21 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE NLE U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1,1,2,2-TETRACHLOROETHANE NLE U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE NLE U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1,1,2-TRICHLOROETHANE NLE U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1,1-DICHLOROETHANE NLE U.81 U.81 U.81 U.81 U.81 U.81 U.81 U 1,1-DICHLOROETHENE NLE U.79 U.79 U.79 U.79 U.79 U.79 U.79 U 1,2 - DIBROMOETHANE NLE U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1,2,4-TRICHLOROBENZENE NLE U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U 1,2,4-TRIMETHYLBENZENE NLE NLE NLE J.59 J.49 J.98 U.64 J.74 J.98 U.98 U 1,2-DICHLOROBENZENE NLE U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1,2-DICHLOROETHANE NLE U.81 U.81 U.81 U.81 U.81 U.81 U.81 U 1,2-DICHLOROPROPANE NLE U.92 U.92 U.92 U.92 U.92 U.92 U.92 U 1,2-DICHLOROTETRAFLUOROETHANE NLE NLE 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 1,3,5-TRIMETHYLBENZENE NLE NLE NLE NLE.98 U.98 U.98 U.98 U.98 U.98 U.98 U.98 U 1,3-BUTADIENE NLE U.44 U.44 U.44 U.44 U.44 U.44 U.44 U 1,3-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 1,4-DICHLOROBENZENE NLE J 1.2 U 1.2 U 1.2 U.66 J.6 J 1.2 U 1.2 U 1,4-DIOXANE NLE NLE NLE U.72 U.72 U.72 U.72 U.72 U.72 U.72 U 2,2,4-TRIMETHYLPENTANE NLE NLE NLE NLE.47 J.56 J.93 U.93 U J.93 U.93 U 2-BUTANONE NLE CHLOROTOLUENE NLE 73 1 NLE 1U 1U 1 U 1 U 1U 1U 1 U 1U 2-HEXANONE NLE NLE NLE J.82 U.82 U.82 U.82 U.41 J.82 U.82 U 3-CHLOROPROPENE NLE U.63 U.63 U.63 U.63 U.63 U.63 U.63 U 4-ETHYLTOLUENE NLE NLE NLE NLE.98 U.98 U.98 U.98 U.98 U.98 U.98 U.98 U 4-METHYL-2-PENTANONE NLE J.82 U.82 U.82 U.45 J.82 U.82 U.82 U ACETONE BENZENE J J BENZYLCHLORIDE NLE NLE NLE.5 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U BROMODICHLOROMETHANE NLE U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U BROMOETHENE NLE U.87 U.87 U.87 U.87 U.87 U.87 U.87 U BROMOFORM NLE U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U BROMOMETHANE NLE U.78 U.78 U.78 U.78 U.78 U.78 U.78 U CARBON DISULFIDE NLE J.62 U.62 U.62 U.62 U U.62 U CARBON TETRACHLORIDE J.61 J.69 J.69 J 1.3 U 1.3 U 1.3 U.6 J CHLOROBENZENE NLE U.92 U.92 U.92 U.92 U.64 J.92 U.92 U CHLOROETHANE NLE U.53 U.53 U.53 U.53 U.53 U.53 U.53 U CHLOROFORM U.98 U U.98 U CHLOROMETHANE NLE CIS-1,2-DICHLOROETHENE NLE NLE.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U CIS-1,3-DICHLOROPROPENE NLE NLE NLE NLE.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U CYCLOHEXANE NLE U.69 U J.69 U.69 U.69 U DIBROMOCHLOROMETHANE NLE U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U 1.7 U DICHLORODIFLUOROMETHANE NLE ETHANOL NLE NLE NLE NLE 92.3 E 84.6 E ETHYLACETATE NLE NLE NLE NLE ETHYLBENZENE U.87 U.87 U.87 U.56 J.61 J.87 U.87 U HEXACHLOROBUTADIENE NLE U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U HEXANE NLE J.49 J ISOPROPYL ALCOHOL NLE NLE NLE M,P-XYLENES NLE NLE NLE NLE J.87 U U METHYLENE CHLORIDE METHYLMETHACRYLATE NLE NLE NLE 73 NA NA.82 U.82 U NA NA.82 U NA MTBE U.72 U.72 U.72 U.72 U.72 U.72 U.72 U K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\IndoorAirResults_91_211_4 June_24_211_JL 1 of 2

96 TABLE 5-3 INDOOR AIR ANALYTICAL RESULTS: FEBRUARY 211 EPA BUILDING 1: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Location ID: Sample Type: Lab Sample ID: Date: Units: Table B-1 DOD Risk- Based Residential Air Concentrations BG-1 Duplicate Sample Duplicate Sample Duplicate Sample Sample JA JA JA JA JA JA JA JA /24/21 9/24/21 2/23/211 2/23/211 9/24/21 9/24/21 2/23/211 9/24/21 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) COMPOUND 1 Table 2 NJDEP Rapid Residential Generic Nonresidential Action Level 3 Indoor Air Screening Generic Indoor Air Levels 3,4 Screening Levels 3,4 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) N-HEPTANE NLE NLE NLE NLE.49 J.82 U.82 U.82 U U O-XYLENE NLE NLE NLE U.43 J.87 U.87 U.56 J.56 J.87 U.87 U PROPYLENE NLE NLE NLE U.86 U U.86 U U STYRENE NLE U.85 U.85 U.85 U.85 U.43 J.85 U.85 U TERT-BUTYL ALCOHOL NLE NLE.33 J.61 U.61 U.61 U.61 U.61 U.61 U.61 U TETRACHLOROETHYLENE U.27 U U.27 U TETRAHYDROFURAN NLE NLE NLE NLE.38 J.38 J.59 U.59 U.59 U.59 U.59 U.59 U TOLUENE J TRANS-1,2-DICHLOROETHENE NLE U.79 U.79 U.79 U.38 J.79 U.79 U.79 U TRANS-1,3-DICHLOROPROPENE NLE NLE NLE NLE.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U TRICHLOROETHYLENE J.21 U.21 U.21 U U.21 U TRICHLOROFLUOROMETHANE NLE VINYL ACETATE NLE NLE NLE 21.7 U.7 U.7 U.7 U.7 U.7 U.7 U.7 U VINYL CHLORIDE U.51 U.51 U.51 U.51 U.51 U.51 U.51 U XYLENES (TOTAL) J.87 U U NOTES: AOC - Area of Concern ID - Identifier NLE - No Limit Established NJDEP - New Jersey Department of Environmental Protection J Estimated Value U - Not Detected Above Reporting Limit ug/m 3 - micrograms per cubic meter USACE - United States Army Corps of Engineers USACE - United States Army Corps of Engineers EPA - United States Environmental Protection Agency DOD Department of Defense Exceedances of NJDEP Nonresidential Generic Indoor Air Screening Levels are indicated by highlighting Exceedances of NJDEP Residential Generic Indoor Air Screening Levels are indicated by bolding 1 The compound list for this table includes the compounds analyzed under the TO-15 analysis. 2 Table B-1 USEPA Risk-Based Residential Air Concentrations as are provided in the DOD Vapor Intrusion Handbook document issued by the DOD January 29 and revised November NJDEP Indoor Air Screening Levels as are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March Table 1 is the regulatory screening level used for comparison of the analytical results. K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\IndoorAirResults_91_211_4 June_24_211_JL 2 of 2

97 FIGURES

98 1-SG-4 Parameter [Criteria] 1/31/6 6/13/6 9/13/6 1/11/7 4/1/7 8/21/7 6/3/8 9/26/8 3/1/9 9/21/9 3/2/1 9/24/1 9/24/1 2/23/11 TETRACHLOROETHYLENE [34] U 14 U 14 U 14 U J D U TRICHLOROETHYLENE [27] D J Parameter [Criteria] 1/3/6 6/13/6 9/13/6 1/11/7 4/9/7 8/2/7 6/3/8 9/26/8 3/1/9 9/17/9 3/2/1 9/24/1 9/24/1 2/23/11 TETRACHLOROETHYLENE [3] U 1.4 U 1.4 U 1.4 U 1.4 U J U TRICHLOROETHYLENE [3] 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U U.21 U.21 U U DRAWING TITLE: PCE & TCE RESULTS FOR SUBSLAB SOIL GAS AND INDOOR AIR SAMPLES EPA BUILDING " = 2' 1/3/212?!(!(!( Building 1?!(!(!(!( PROJECT MANAGER: P. Bovitz CHECKED BY: D. Krumich FIGURE: SCALE: DATE: CLIENT NAME: PROJECT NAME: CONTRACT No. DELIVERY ORDER NO. DRAWN/MODIFIED BY: DATE CREATED: J. Lynes 1/3/212 U.S. ARMY CORPS OF ENGINEERS NEW ENGLAND & NEW YORK DISTRICTS INDOOR AIR QUALITY REPORT #7 FORMER RARITAN ARSENAL EDISON, NEW JERSEY 1-SG-3 Parameter [Criteria] 1/31/5 1/31/6 6/13/6 9/13/6 1/11/7 4/1/7 8/21/7 6/3/8 9/26/8 3/1/9 9/21/9 3/2/1 9/24/1 9/24/1 2/23/11 2/23/11 TETRACHLOROETHYLENE [34] U 14 U U J J 5 J TRICHLOROETHYLENE [27] U U 11 U J Parameter [Criteria] 1/3/6 6/13/6 9/13/6 1/11/7 4/9/7 8/2/7 6/3/8 9/25/8 3/1/9 9/17/9 3/2/1 9/24/1 9/24/1 2/23/11 2/23/11 TETRACHLOROETHYLENE [3] U 1.4 U 1.4 U 1.4 U 1.4 U J U.27 U TRICHLOROETHYLENE [3] 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U U U.21 U.15 J.21 U.21 U.21 U h h EPA-1 1-BG-1 Parameter [Criteria] 9/24/1 2/25/11 TETRACHLOROETHYLENE [3].27 U.53 TRICHLOROETHYLENE [3].21 U.21 U Parameter [Criteria] 1/3/6 6/13/6 9/13/6 1/11/7 4/9/7 4/11/7 8/2/7 8/27/7 11/14/7 TETRACHLOROETHYLENE [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 TRICHLOROETHYLENE [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 Legend: h!(? 49 Notes: Ambient Air Sample Location Indoor Air Sample Location Subslab Soil Gas Sample Location Building Boundary Exceeds NJ VIG Criteria (2)(3) Soil Gas Sample Results Indoor Air Sample Results Ambient Air Sample Results 1. Building Area: 7,3 square feet. 2. Subslab Soil Gas and Indoor Air Results compared to Table 1 (Generic Vapor Intrusion Screening Levels) of the NJDEP VIG, March The most stringent (Residential) criteria was used to identify exceedances. NJDEP = New Jersey Department of Environmental Protection PCE = Tetrachloroethylene TCE = Trichloroethylene D = Diluted Result J = Estimated Value U = Undetected Result VIG = Vapor Intrusion Guidance REPORT DATE: January 212 DRAWING: 1658_EPA_1_IAQ.mxd PATH: K:/Raritan1/RaritanGIS/ Mxd/212_1_IAQ REVISION No. WORK ORDER No. Weston Solutions, Inc SM 25 Campus Drive Edison, New Jersey TEL: (732) Fax: (732) Graphic Scale In Feet RESULTS & CRITERIA ARE LISTED IN MICROGRAMS PER CUBIC METER (ug/m3)

99 5.3 EPA Building 18 EPA Building 18 is located near the border of soil 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 and lawn area. Ten sampling events were conducted by USACE at EPA Building 18 from February 26 through March 21. Current investigation activities included sub-slab soil gas and indoor air sample collected during September 21 and February Prior Investigations During Area 18E investigations, TCE concentrations were detected in both soil and groundwater exceeding the NJDEP criterion at locations within 1 feet of the building. Sub-slab soil gas samples have been collected at Building 18 since December 24 by the EPA and USACE. TCE, PCE, and benzene concentrations have been detected in soil gas or indoor air exceeding the NJDEP VIG screening levels. The EPA data suggested a complete vapor intrusion pathway existed at Building 18. USACE re-sampled both sub-slab soil gas and indoor air to confirm prior EPA results in January 26. The results of this investigation did not support the presence of a vapor intrusion pathway as no VOCs were detected in either media in exceedance of the NJDEP VIG screening levels. However, sampling continued with events from June 26 to March 21. PCE has never been detected in indoor air samples greater than NJDEP VIG screening levels. However, TCE and PCE were detected in the sub-slab soil gas above NJDEP VIG screening levels during varying sampling events. Because TCE and PCE continue to be detected in the sub-slab soil gas above NJDEP VIG screening levels, semi-annual sampling continues for Building 18. The March 29 analytical results for Building 18 had TCE and benzene concentrations detected in one sub-slab air sample exceeding the current regulatory screening levels. Benzene, PCE and TCE concentrations in indoor air did not exceed regulatory screening levels for all samples; however, methylene chloride was detected at two location points (18-4 and 18-5) above regulatory screening levels. Since methylene chloride concentrations was not detected in groundwater or in any sub-slab soil gas samples, it was assumed to be related to non-dod activities. Building 18 has a sub-slab remediation system installed by the EPA. Continued semiannual sub-slab and indoor air sampling of this building was recommended in the Draft Indoor Air Quality Report #6 with emphases on insuring that the sub-slab system is operating properly. A summary of the detection frequency and concentration range of compounds detected in subslab soil gas and indoor air are provided in Appendix Table E-3 and E-4, respectively Current Investigation Two sub-slab soil gas and two indoor air sample locations were collected during September 21 and February 211. Sub-slab soil gas and indoor air sample locations for EPA Building 18 are shown on Figure

100 5.3.3 Sub-slab Soil Gas Results TCE concentrations were detected in the sub-slab soil gas location 18-SG-5 exceeding the NJDEP VIG screening levels in September 21 and February 211 sampling events. TCE concentrations were detected in both the sample and the duplicate sample (Table 5-8). The complete sub-slab soil gas results for the current investigation are shown on Table 5-4. The following table contains a summary of the sub-slab soil gas exceeding NJDEP VIG screening levels. Compound No. of Samples Exceeding* TCE (September 21) TCE (February 211) * Including duplicate samples Indoor Air Sampling NJDEP VIG Table 1 Residential Sub-slab Soil Gas Screening Criteria and Exceedances Criterion (ug/m 3 ) NJDEP VIG Table 1 Non- Residential Sub-slab Soil Gas Screening Criteria and Exceedances Criterion (ug/m 3 ) Range of Concentrations Exceeding (ug/m 3 ) 2 of of During the September 21 and February 211 sampling events, there were no VOC concentrations exceeding NJDEP VIG screening levels in the indoor air samples. The ambient air samples collected during both sampling events did not have VOC concentrations exceeding regulatory screening levels. The indoor air and background air results are shown on Table Integrated Discussion of Results TCE concentrations in sub-slab soil gas did exceed regulatory limits during both September 21 and February 211 sampling events at sampling location 18-SG-5. However, indoor air and ambient sample results for Building 18 did not have any VOC concentrations above NJDEP VIG screening levels for both sampling events. This building also has a sub-slab remediation system installed in it Conclusions and Recommendations Based on the recent analytical results, VOCs have not been consistently migrating into the building at concentrations of concern likely due to installation of a remedial system. Previous monitoring of the remedial system has proven that the system is operating properly. It is recommended that the monitoring continue at the same semi-annual frequency for the next year. USACE will evaluate the monitoring to determine if additional sampling is necessary or if the monitoring can be curtailed as per the recommendations of the proposed GW/VI FS. 5-8

101 TABLES

102 TABLE 5-4 SUBSLAB SOIL GAS ANALYTICAL RESULTS: FEBRUARY 211 EPA BUILDING 18: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey COMPOUND 1 Residential Generic Soil Gas Screening Levels 2,3 Location ID: 18-SG-4 18-SG-4 18-SG-5 18-SG-5 Sample Type: Sample Sample Duplicate Sample Lab Sample ID: JA JA JA JA Date: 9/24/21 2/23/211 9/24/21 9/24/21 Units: (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Nonresidential Generic Soil Gas Screening Levels 2,3 18-SG-5 Duplicate JA /23/211 (ug/m 3 ) 18-SG-5 Sample JA /23/211 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 1,1,2,2-TETRACHLOROETHANE U 5.5 U 5.5 U 5.5 U 5.5 U 5.5 U 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 1,1,2-TRICHLOROETHANE U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 1,1-DICHLOROETHANE U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 1,1-DICHLOROETHENE U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 1,2 - DIBROMOETHANE U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 1,2,4-TRICHLOROBENZENE U 5.9 U 5.9 U 5.9 U 5.9 U 5.9 U 1,2,4-TRIMETHYLBENZENE NLE NLE 3.9 U 2.8 J 3.9 U 3.9 U 3.9 U 3.9 U 1,2-DICHLOROBENZENE U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 1,2-DICHLOROETHANE U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 1,2-DICHLOROPROPANE U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 1,2-DICHLOROTETRAFLUOROETHANE NLE NLE 5.6 U 5.6 U 5.6 U 5.6 U 5.6 U 5.6 U 1,3,5-TRIMETHYLBENZENE NLE NLE 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 1,3-BUTADIENE U 1.8 U 1.8 U 1.8 U 1.8 U 1.8 U 1,3-DICHLOROBENZENE U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 1,4-DICHLOROBENZENE U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 1,4-DIOXANE NLE NLE 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2,2,4-TRIMETHYLPENTANE NLE NLE 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U 2-BUTANONE U 2.4 U 2.4 U 1.5 J 2.1 J CHLOROTOLUENE U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 2-HEXANONE NLE NLE 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3-CHLOROPROPENE U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 4-ETHYLTOLUENE NLE NLE 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 4-METHYL-2-PENTANONE U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U ACETONE BENZENE U 2.6 U 2.6 U 2.6 U 2.6 U 2.6 U BENZYLCHLORIDE NLE NLE 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U BROMODICHLOROMETHANE U 5.4 U 5.4 U 5.4 U 5.4 U 5.4 U BROMOETHENE U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U BROMOFORM U 8.3 U 8.3 U 8.3 U 8.3 U 8.3 U BROMOMETHANE U 3.1 U 3.1 U 3.1 U 3.1 U 3.1 U CARBON DISULFIDE U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U CARBON TETRACHLORIDE U 5 U 5 U 5 U 5 U 5 U CHLOROBENZENE U 3.7 U 3.7 U 3.7 U 3.7 U 3.7 U CHLOROETHANE U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U CHLOROFORM U 3.9 U U 3.9 U 3.9 U CHLOROMETHANE U 1.7 U 1.7 U 1.3 J 1.1 J 1.2 J CIS-1,2-DICHLOROETHENE U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U CIS-1,3-DICHLOROPROPENE NLE NLE 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U CYCLOHEXANE U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U DIBROMOCHLOROMETHANE U 6.8 U 6.8 U 6.8 U 6.8 U 6.8 U DICHLORODIFLUOROMETHANE J 2.8 J 2.6 J 2.4 J 2.6 J 2.5 J ETHANOL NLE NLE ETHYLACETATE NLE NLE 2.9 U 2.9 U 2.9 U ETHYLBENZENE U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U HEXACHLOROBUTADIENE U 8.5 U 8.5 U 8.5 U 8.5 U 8.5 U HEXANE U 2.8 U 2.8 U 1.9 J 2.8 U 2.8 U ISOPROPYL ALCOHOL NLE NLE K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\SoilGasResults_91_211_9 June_24_211_JL 1 of 2

103 TABLE 5-4 SUBSLAB SOIL GAS ANALYTICAL RESULTS: FEBRUARY 211 EPA BUILDING 18: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey COMPOUND 1 Residential Generic Soil Gas Screening Levels 2,3 Location ID: 18-SG-4 18-SG-4 18-SG-5 18-SG-5 Sample Type: Sample Sample Duplicate Sample Lab Sample ID: JA JA JA JA Date: 9/24/21 2/23/211 9/24/21 9/24/21 Units: (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Nonresidential Generic Soil Gas Screening Levels 2,3 18-SG-5 Duplicate JA /23/211 (ug/m 3 ) 18-SG-5 Sample JA /23/211 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) M,P-XYLENES NLE NLE 3.5 U 1.9 J 3.5 U 3.5 U 1.7 J 1.7 J METHYLENE CHLORIDE U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U METHYLMETHACRYLATE NLE NLE NA 3.3 U NA NA 3.3 U 3.3 U MTBE U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U N-HEPTANE NLE NLE 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U O-XYLENE NLE NLE 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U PROPYLENE NLE NLE 3.4 U 1.3 J 3.4 U 3.4 U 1.9 J 1.9 J STYRENE U 3.4 U 3.4 U 3.4 U 3.4 U 3.4 U TERT-BUTYL ALCOHOL U 2.4 U 2.4 U 2.4 U 2.4 U 2.4 U TETRACHLOROETHYLENE U 1.1 U U 1.1 U TETRAHYDROFURAN NLE NLE 2.4 U 2.4 U 2.4 U 2.4 U 2.4 U 2.4 U TOLUENE U 1.8 J 2.1 J TRANS-1,2-DICHLOROETHENE U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U TRANS-1,3-DICHLOROPROPENE NLE NLE 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U TRICHLOROETHYLENE TRICHLOROFLUOROMETHANE J 2.1 J 2.5 J 4.5 U 4.5 U VINYL ACETATE NLE NLE 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U VINYL CHLORIDE U 2 U 2 U 2 U 2 U 2 U XYLENES (TOTAL) U 1.9 J 3.5 U 3.5 U 1.7 J 1.7 J NOTES: AOC - Area of Concern ID - Identifier NLE - No Limit Established NJDEP - New Jersey Department of Environmental Protection J Estimated Value U - Not Detected Above Reporting Limit ug/m 3 - micrograms per cubic meter EPA - United States Environmental Protection Agency Exceedances of NJDEP Nonresidential Generic Indoor Air Screening Levels are indicated by highlighting Exceedances of NJDEP Residential Generic Indoor Air Screening Levels are indicated by bolding 1 The compound list for this table includes the compounds analyzed under the TO-15 analysis. 2 NJDEP Soil Gas Screening Levels as are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March Table 1 is the regulatory screening level used for comparison of the analytical results. K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\SoilGasResults_91_211_9 June_24_211_JL 2 of 2

104 TABLE 5-5 INDOOR AIR ANALYTICAL RESULTS: FEBRUARY 211 EPA BUILDING 18: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey COMPOUND 1 Table 2 NJDEP Rapid Action Level 3 Residential Generic Indoor Air Screening Levels 3,4 Nonresidential Generic Indoor Air Screening Levels 3,4 Location ID: Sample Type: Lab Sample ID: Date: Units: Table B-1 DOD Risk- Based Residential Air Concentrations BG-1 18-BG-1 Sample Sample Duplicate Sample Sample Sample Sample JA JA JA JA JA JA JA JA JA /24/21 2/23/211 9/24/21 9/24/21 2/23/211 9/24/21 2/23/211 9/24/21 2/23/211 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE NLE 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 1,1,2,2-TETRACHLOROETHANE NLE 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 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE NLE 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 1,1,2-TRICHLOROETHANE NLE 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-DICHLOROETHANE NLE U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U 1,1-DICHLOROETHENE NLE U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U 1,2 - DIBROMOETHANE NLE 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 1,2,4-TRICHLOROBENZENE NLE 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 1,2,4-TRIMETHYLBENZENE NLE NLE NLE U.98 U.98 U.98 U.88 J.59 J.98 U.98 U.98 U 1,2-DICHLOROBENZENE NLE 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-DICHLOROETHANE NLE J.81 U.81 U.81 U.81 U.81 U U.81 U 1,2-DICHLOROPROPANE NLE U.92 U.92 U.92 U.92 U.92 U.92 U.92 U.92 U 1,2-DICHLOROTETRAFLUOROETHANE NLE NLE 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 U 1,3,5-TRIMETHYLBENZENE NLE NLE NLE NLE.98 U.98 U.98 U.98 U.98 U.98 U.98 U.98 U.98 U 1,3-BUTADIENE NLE U.44 U.44 U.44 U.44 U.44 U.44 U.44 U.44 U 1,3-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 U 1,4-DICHLOROBENZENE NLE U.9 J U 1.2 U 1.2 U 1,4-DIOXANE NLE NLE NLE U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U 2,2,4-TRIMETHYLPENTANE NLE NLE NLE NLE.93 U.93 U.93 U.93 U.93 U.89 J.93 U.93 U.93 U 2-BUTANONE NLE CHLOROTOLUENE NLE 73 1 NLE 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 2-HEXANONE NLE NLE NLE U.82 U.82 U.82 U.82 U.82 U.82 U.82 U.82 U 3-CHLOROPROPENE NLE U.63 U.63 U.63 U.63 U.63 U.63 U.63 U.63 U 4-ETHYLTOLUENE NLE NLE NLE NLE.98 U.98 U.98 U.98 U.98 U.98 U.98 U.98 U.98 U 4-METHYL-2-PENTANONE NLE U.41 J.41 J.82 U.82 U.82 U.82 U.82 U.82 U ACETONE BENZENE J J.38 J J 1.1 BENZYLCHLORIDE NLE NLE NLE.5 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U BROMODICHLOROMETHANE NLE 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 BROMOETHENE NLE U.87 U.87 U.87 U.87 U.87 U.87 U.87 U.87 U BROMOFORM NLE 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 BROMOMETHANE NLE U.78 U.78 U.78 U.78 U.78 U.78 U.78 U.78 U CARBON DISULFIDE NLE U.62 U.62 U.62 U.62 U.62 U.62 U.62 U.62 U CARBON TETRACHLORIDE U.62 J 1.3 U 1.3 U.63 J.53 J.69 J.57 J.6 J CHLOROBENZENE NLE U.92 U.92 U.92 U.92 U.92 U.92 U.92 U.92 U CHLOROETHANE NLE U.53 U.53 U.53 U.53 U.53 U.53 U.53 U.53 U CHLOROFORM U.98 U.98 U.98 U.98 U.98 U.98 U.98 U.98 U CHLOROMETHANE NLE CIS-1,2-DICHLOROETHENE NLE NLE.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U CIS-1,3-DICHLOROPROPENE NLE NLE NLE NLE.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U CYCLOHEXANE NLE U U.69 U.62 J.69 U.69 U.69 U.69 U DIBROMOCHLOROMETHANE NLE 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 DICHLORODIFLUOROMETHANE NLE ETHANOL NLE NLE NLE NLE E E ETHYLACETATE NLE NLE NLE NLE.72 U ETHYLBENZENE J.48 J.87 U.87 U.43 J.65 J.87 U.87 U.87 U HEXACHLOROBUTADIENE NLE 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 HEXANE NLE J J J.67 J.46 J ISOPROPYL ALCOHOL NLE NLE NLE M,P-XYLENES NLE NLE NLE NLE U U.87 U.69 J METHYLENE CHLORIDE J METHYLMETHACRYLATE NLE NLE NLE 73 NA.82 U NA NA.82 U NA.82 U NA.82 U MTBE U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U N-HEPTANE NLE NLE NLE NLE.82 U.53 J.49 J.82 U.49 J.53 J.82 U.82 U.82 U K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\IndoorAirResults_91_211_4 June_24_211_JL 1 of 2

105 TABLE 5-5 INDOOR AIR ANALYTICAL RESULTS: FEBRUARY 211 EPA BUILDING 18: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Location ID: Sample Type: Lab Sample ID: Date: Units: Table B-1 DOD Risk- Based Residential Air Concentrations BG-1 18-BG-1 Sample Sample Duplicate Sample Sample Sample Sample JA JA JA JA JA JA JA JA JA /24/21 2/23/211 9/24/21 9/24/21 2/23/211 9/24/21 2/23/211 9/24/21 2/23/211 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) COMPOUND 1 Table 2 NJDEP Rapid Residential Generic Nonresidential Action Level 3 Indoor Air Screening Generic Indoor Air Levels 3,4 Screening Levels 3,4 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) O-XYLENE NLE NLE NLE J.48 J.48 J.87 U.87 U.74 J.87 U.87 U.87 U PROPYLENE NLE NLE NLE U U.86 U U U 1.3 STYRENE NLE J.47 J.47 J.85 U.51 J.85 U.85 U.85 U.85 U TERT-BUTYL ALCOHOL NLE NLE.61 U.61 U.61 U.61 U.61 U.61 U.61 U.61 U.61 U TETRACHLOROETHYLENE U.27 U.27 U.27 U.27 U U.27 U.27 U TETRAHYDROFURAN NLE NLE NLE NLE.59 U.59 U.59 U.59 U.59 U.59 U.59 U.59 U.59 U TOLUENE TRANS-1,2-DICHLOROETHENE NLE U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U TRANS-1,3-DICHLOROPROPENE NLE NLE NLE NLE.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U TRICHLOROETHYLENE U.21 U.21 U.21 U.21 U.21 U.21 U.21 U.21 U TRICHLOROFLUOROMETHANE NLE VINYL ACETATE NLE NLE NLE 21.7 U.7 U.7 U.7 U.7 U.7 U.7 U.7 U.7 U VINYL CHLORIDE U.51 U.51 U.51 U.51 U.51 U.51 U.51 U.51 U XYLENES (TOTAL) U U.87 U.69 J NOTES: AOC - Area of Concern ID - Identifier NLE - No Limit Established NJDEP - New Jersey Department of Environmental Protection E - Value Exceeds Calibration Range J Estimated Value U - Not Detected Above Reporting Limit ug/m 3 - micrograms per cubic meter USACE - United States Army Corps of Engineers EPA - United States Environmental Protection Agency DOD Department of Defense Exceedances of NJDEP Nonresidential Generic Indoor Air Screening Levels are indicated by highlighting Exceedances of NJDEP Residential Generic Indoor Air Screening Levels are indicated by bolding 1 The compound list for this table includes the compounds analyzed under the TO-15 analysis. 2 Table B-1 USEPA Risk-Based Residential Air Concentrations as are provided in the DOD Vapor Intrusion Handbook document issued by the DOD January 29 and revised November NJDEP Indoor Air Screening Levels as are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March Table 1 is the regulatory screening level used for comparison of the analytical results. K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\IndoorAirResults_91_211_4 June_24_211_JL 2 of 2

106 18-SG-5 Parameter [Criteria] 2/14/6 6/13/6 9/13/6 1/11/7 4/1/7 8/21/7 6/3/8 9/3/8 3/12/9 9/18/9 3/4/1 9/24/1 9/24/1 2/23/11 2/23/11 TETRACHLOROETHYLENE [34] 14 U 14 U 14 U U J U 1.1 U TRICHLOROETHYLENE [27] 11 U 11 U U 87.6 D D 5.21 U Parameter [Criteria] 1/3/6 6/13/6 9/13/6 1/11/7 4/9/7 8/2/7 6/3/8 9/29/8 3/12/9 9/17/9 3/3/1 9/24/1 9/24/1 2/23/11 TETRACHLOROETHYLENE [3] 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U J U.27 U.27 U TRICHLOROETHYLENE [3] 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U U.21 U.21 U.21 U.21 U.21 U 18-SG-4 Parameter [Criteria] 2/14/6 6/13/6 9/13/6 1/11/7 4/1/7 8/21/7 6/3/8 9/3/8 3/12/9 9/18/9 3/4/1 9/24/1 2/23/11 TETRACHLOROETHYLENE [34] 14 U 14 U 14 U U J U 1.1 U TRICHLOROETHYLENE [27] 11 U 11 U 11 U U 11 U J.21 U DRAWING TITLE: PCE & TCE RESULTS FOR SUBSLAB SOIL GAS AND INDOOR AIR SAMPLES EPA BUILDING " = 2' 1/3/212 FIGURE: SCALE: DATE: 18-BK Parameter [Criteria] 6/3/8 9/29/8 3/13/9 9/17/9 3/3/1 TETRACHLOROETHYLENE [3] U.2 J 2.31 J TRICHLOROETHYLENE [3] U.21 U.21 U Parameter [Criteria] 9/24/1 2/23/11 TETRACHLOROETHYLENE [3] U TRICHLOROETHYLENE [3].21 U.21 U?!( CLIENT NAME: U.S. ARMY CORPS OF ENGINEERS NEW ENGLAND & NEW YORK DISTRICTS PROJECT NAME: INDOOR AIR QUALITY REPORT #7 FORMER RARITAN ARSENAL EDISON, NEW JERSEY h Building 18?!(!( PROJECT MANAGER: P. Bovitz CHECKED BY: D. Krumich CONTRACT No. DELIVERY ORDER NO. DRAWN/MODIFIED BY: J. Lynes DATE CREATED: 1/3/ BG-1 Parameter [Criteria] 9/24/1 2/23/11 TETRACHLOROETHYLENE [3].27 U.27 U TRICHLOROETHYLENE [3].21 U.21 U Parameter [Criteria] 1/3/6 6/13/6 9/13/6 1/11/7 4/9/7 8/2/7 6/3/8 9/29/8 3/12/9 9/17/9 3/3/1 9/24/1 2/23/11 TETRACHLOROETHYLENE [3] 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U J.2 U.27 U.27 U TRICHLOROETHYLENE [3] 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U U.21 U.21 U.21 U.21 U h!(!( Legend: h!(? 91 Notes: Ambient Air Sample Location Indoor Air Sample Location Subslab Soil Gas Sample Location Building Boundary Exceeds NJ VIG Criteria (2)(3) Soil Gas Sample Results Indoor Air Sample Results Ambient Air Sample Results 1. Building Area: 8,9 square feet. 2. Subslab Soil Gas and Indoor Air Results compared to Table 1 (Generic Vapor Intrusion Screening Levels) of the NJDEP VIG, March The most stringent (Residential) criteria was used to identify exceedances. NJDEP = New Jersey Department of Environmental Protection PCE = Tetrachloroethylene TCE = Trichloroethylene D = Diluted Result J = Estimated Value U = Undetected Result VIG = Vapor Intrusion Guidance REPORT DATE: January 212 DRAWING: 1659_EPA_18_IAQ.mxd PATH: K:/Raritan1/RaritanGIS/ Mxd/212_1_IAQ REVISION No. WORK ORDER No. Weston Solutions, Inc SM 25 Campus Drive Edison, New Jersey TEL: (732) Fax: (732) Graphic Scale In Feet RESULTS & CRITERIA ARE LISTED IN MICROGRAMS PER CUBIC METER (ug/m3)

107 5.4 EPA Building 2 EPA Building 2 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 and lawn area. The building is currently used as a medical facility (nurse s station). Sixteen previous rounds of sub-slab soil gas sampling were conducted at EPA Building 2 in January 25 through March 21, and 13 rounds of indoor air sampling were conducted in January 26 through March 21. Current investigation activities include sub-slab soil gas and indoor air sample collection during September 21, October 21, and February Prior Investigations During Area 18E investigations, TCE concentrations were detected in both soil and groundwater exceeding the NJDEP criterion at locations within 1 ft of Building 2. Sub-slab soil gas samples have been collected at Building 2 since December 24 by the EPA and USACE. TCE, chloroform, and carbon tetrachloride concentrations have been detected in soil gas or indoor air exceeding the NJDEP VIG screening levels. Results indicated that a complete vapor intrusion pathway from sub-slab soil gas to indoor air existed for Building 2. Based on the results, a sub-slab venting/depressurization system was installed by the EPA. Analytical data from sampling events through May 29 continued to show sporadic concentrations of TCE detected above both indoor air and sub-slab soil gas screening levels. A summary of the detection frequency and concentration range of compounds detected in subslab soil gas and indoor air are provided in Appendix Table E-5 and E-6, respectively Current Investigation One sub-slab soil gas and two indoor air sample locations were collected during the September 21 and February 211 sampling events. During the September 21 sampling event, the SUMMA canister used at location 2-3 malfunctioned causing a resample in October 21. Sub-slab soil gas and indoor air sample locations for EPA Building 2 are shown on Figure 5-3. The sub-slab soil gas point was sampled in the office area, by the nurse s desk. The indoor air samples were collected at the nurse s desk and the bookcase by the patient s rooms. One background sample was collected during each sampling round Sub-slab Soil Gas Results In September 21, TCE concentrations were detected above the NJDEP VIG screening levels. However, the analytical data from February 211 did not have TCE concentrations exceeding the regulatory screening levels. No other VOCs were detected in exceedance of their NJDEP VIG screening levels or EPA Generic Screening levels. The complete sub-slab soil gas results for the current investigation are shown on Table 5-6. The following table contains a summary of the sub-slab soil gas exceeding NJDEP VIG screening levels. 5-9

108 Compound No. of Samples Exceeding* NJDEP VIG Table 1 Residential Sub-slab Soil Gas Screening Criteria and Exceedances Criterion (ug/m 3 ) NJDEP VIG Table 1 Non- Residential Sub-slab Soil Gas Screening Criteria and Exceedances Criterion (ug/m 3 ) Range of Concentrations Exceeding (ug/m 3 ) TCE 2 of (September 21) * Including duplicate samples Indoor Air Sampling Results During September 21, October 21, and February 211, there were no VOC concentrations detected in indoor air samples above the NJDEP VIG screening levels. The analytical results of the ambient air samples did not have VOC concentrations detected above the screening levels during any of the sampling events. The complete indoor air sampling results for the current investigation is shown on Table Integrated Discussion of Results TCE was detected above the NJDEP VIG screening levels for soil gas in September 21. However, the indoor air samples in both rounds and the soil gas samples from February 211 did not have VOC concentrations exceeding the screening levels Previous sub-slab and indoor air sampling results corroborated that a complete vapor intrusion pathway existed from groundwater to soil gas to indoor air at Building 2. However, the more recent data has shown a significant decrease in concentrations of PCE and TCE in sub-slab soil gas Conclusions and Recommendations Based on the recent analytical data, it appears that there is no longer a potential exposure pathway likely due to the sub-slab venting/depressurization system installed by the EPA. It should be noted that there is no vent on this system that would allow vapor recovery 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 if additional sampling is required or if the sampling can be curtailed as per the recommendations of the proposed groundwater/vi FS. 5-1

109 COMPOUND 1 TABLE 5-6 SUBSLAB SOIL GAS ANALYTICAL RESULTS: FEBRUARY 211 EPA BUILDING 2: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Residential Generic Soil Gas Screening Levels 2,3 Location ID: Sample Type: Lab Sample ID: Date: Units: Nonresidential Generic Soil Gas Screening Levels 2,3 2-SG-2 Duplicate JA /24/21 (ug/m 3 ) 2-SG-2 Sample JA /24/21 (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE U 3.6 J 4.4 U 1,1,2,2-TETRACHLOROETHANE U 5.5 U 5.5 U 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE U 6.1 U 6.1 U 1,1,2-TRICHLOROETHANE U 4.4 U 4.4 U 1,1-DICHLOROETHANE U 3.2 U 3.2 U 1,1-DICHLOROETHENE U 3.2 U 3.2 U 1,2 - DIBROMOETHANE U 6.1 U 6.1 U 1,2,4-TRICHLOROBENZENE U 5.9 U 5.9 U 1,2,4-TRIMETHYLBENZENE NLE NLE 3.9 U J 1,2-DICHLOROBENZENE U 4.8 U 4.8 U 1,2-DICHLOROETHANE U 3.2 U 3.2 U 1,2-DICHLOROPROPANE U 3.7 U 3.7 U 1,2-DICHLOROTETRAFLUOROETHANE NLE NLE 5.6 U 5.6 U 5.6 U 1,3,5-TRIMETHYLBENZENE NLE NLE 3.9 U 3.8 J 3.9 U 1,3-BUTADIENE U 1.8 U 1.8 U 1,3-DICHLOROBENZENE U 4.8 U 4.8 U 1,4-DICHLOROBENZENE U 4.8 U 4.8 U 1,4-DIOXANE NLE NLE 2.9 U 2.9 U 2.9 U 2,2,4-TRIMETHYLPENTANE NLE NLE 3.7 U 3.7 U 3.7 U 2-BUTANONE U 2.4 U CHLOROTOLUENE U 4.1 U 4.1 U 2-HEXANONE NLE NLE 3.3 U 3.3 U 3.3 U 3-CHLOROPROPENE U 2.5 U 2.5 U 4-ETHYLTOLUENE NLE NLE 3.9 U 3.9 U 3.9 U 4-METHYL-2-PENTANONE U 3.3 U 3.3 U ACETONE BENZENE U 2.6 U 2.6 U BENZYLCHLORIDE NLE NLE 4.1 U 4.1 U 4.1 U BROMODICHLOROMETHANE U 5.4 U 5.4 U BROMOETHENE U 3.5 U 3.5 U BROMOFORM U 8.3 U 8.3 U BROMOMETHANE U 3.1 U 3.1 U CARBON DISULFIDE U 2.5 U 2.5 U CARBON TETRACHLORIDE U 5 U 5 U CHLOROBENZENE U 3.7 U 3.7 U CHLOROETHANE U 2.1 U 2.1 U CHLOROFORM U 3.9 U 3.9 U CHLOROMETHANE U 1.7 U 1.6 J CIS-1,2-DICHLOROETHENE U 3.2 U 3.2 U CIS-1,3-DICHLOROPROPENE NLE NLE 3.6 U 3.6 U 3.6 U CYCLOHEXANE U 2.8 U 2.8 U DIBROMOCHLOROMETHANE U 6.8 U 6.8 U DICHLORODIFLUOROMETHANE J 2.6 J 2.1 J ETHANOL NLE NLE ETHYLACETATE NLE NLE 2.9 U 2.9 U 2.9 U ETHYLBENZENE U 3.5 U 3.5 U HEXACHLOROBUTADIENE U 8.5 U 8.5 U HEXANE U 2.8 U 2.8 U ISOPROPYL ALCOHOL NLE NLE 2 U 2 U 13 (ug/m 3 ) 2-SG-2 Sample JA /23/211 (ug/m 3 ) K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\SoilGasResults_91_211_9 June_24_211_JL 1 of 2

110 COMPOUND 1 TABLE 5-6 SUBSLAB SOIL GAS ANALYTICAL RESULTS: FEBRUARY 211 EPA BUILDING 2: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Residential Generic Soil Gas Screening Levels 2,3 Location ID: Sample Type: Lab Sample ID: Date: Units: Nonresidential Generic Soil Gas Screening Levels 2,3 2-SG-2 Duplicate JA /24/21 (ug/m 3 ) 2-SG-2 Sample JA /24/21 (ug/m 3 ) (ug/m 3 ) M,P-XYLENES NLE NLE 3.5 U 2.3 J 2.3 J METHYLENE CHLORIDE U 2.8 U 2.8 U METHYLMETHACRYLATE NLE NLE NA NA 3.3 U MTBE U 2.9 U 2.9 U N-HEPTANE NLE NLE 3.3 U 3.3 U 3.3 U O-XYLENE NLE NLE 3.5 U 3.5 U 3.5 U PROPYLENE NLE NLE 3.4 U 3.4 U.86 J STYRENE U 3.4 U 3.4 U TERT-BUTYL ALCOHOL U 2.4 U 2.4 U TETRACHLOROETHYLENE U TETRAHYDROFURAN NLE NLE 2.4 U 2.4 U 2.4 U TOLUENE U 3 U 2.6 J TRANS-1,2-DICHLOROETHENE U 3.2 U 3.2 U TRANS-1,3-DICHLOROPROPENE NLE NLE 3.6 U 3.6 U 3.6 U TRICHLOROETHYLENE U TRICHLOROFLUOROMETHANE J 2.2 J 4.5 U VINYL ACETATE NLE NLE 2.8 U 2.8 U 2.8 U VINYL CHLORIDE U 2 U 2 U XYLENES (TOTAL) U 2.3 J 2.3 J NOTES: AOC - Area of Concern ID - Identifier NLE - No Limit Established NJDEP - New Jersey Department of Environmental Protection J Estimated Value U - Not Detected Above Reporting Limit ug/m 3 - micrograms per cubic meter EPA - United States Environmental Protection Agency Exceedances of NJDEP Nonresidential Generic Indoor Air Screening Levels are indicated by highlighting Exceedances of NJDEP Residential Generic Indoor Air Screening Levels are indicated by bolding 1 The compound list for this table includes the compounds analyzed under the TO-15 analysis. 2 NJDEP Soil Gas Screening Levels as are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March Table 1 is the regulatory screening level used for comparison of the analytical results. (ug/m 3 ) 2-SG-2 Sample JA /23/211 (ug/m 3 ) K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\SoilGasResults_91_211_9 June_24_211_JL 2 of 2

111 TABLE 5-7 INDOOR AIR ANALYTICAL RESULTS: FEBRUARY 211 EPA BUILDING 2: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey COMPOUND 1 Table 2 NJDEP Rapid Action Level 3 Residential Generic Indoor Air Screening Levels 3,4 Nonresidential Generic Indoor Air Screening Levels 3,4 Location ID: BG-1 2-BG-1 Sample Type: Sample Sample Duplicate Sample Duplicate Sample Duplicate Sample Lab Sample ID: JA JA JA JA JA JA JA JA JA JA Date: 9/24/21 2/23/211 9/24/21 9/24/21 1/8/21 1/8/21 2/23/211 2/23/211 9/24/21 2/23/211 Units: (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m 3 ) (ug/m3) (ug/m3) (ug/m3) Table B-1 DOD Risk- Based Residential Air Concentrations 2 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE NLE 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 1,1,2,2-TETRACHLOROETHANE NLE 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 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE NLE 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 1,1,2-TRICHLOROETHANE NLE 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-DICHLOROETHANE NLE U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U 1,1-DICHLOROETHENE NLE U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U 1,2 - DIBROMOETHANE NLE 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 1,2,4-TRICHLOROBENZENE NLE 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 1,2,4-TRIMETHYLBENZENE NLE NLE NLE J.98 U J.69 J.98 U.98 U.98 U.98 U 1,2-DICHLOROBENZENE NLE 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-DICHLOROETHANE NLE U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U 1,2-DICHLOROPROPANE NLE U.92 U.92 U.92 U.92 U.92 U.92 U.92 U.92 U.92 U 1,2-DICHLOROTETRAFLUOROETHANE NLE NLE 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 U 1.4 U 1,3,5-TRIMETHYLBENZENE NLE NLE NLE NLE.98 U.98 U.98 U.48 J.98 U.98 U.98 U.98 U.98 U.98 U 1,3-BUTADIENE NLE U.44 U.44 U.44 U.44 U.44 U.44 U.44 U.44 U.44 U 1,3-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 U 1.2 U 1,4-DICHLOROBENZENE NLE 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 1,4-DIOXANE NLE NLE NLE U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U 2,2,4-TRIMETHYLPENTANE NLE NLE NLE NLE.93 U.93 U.51 J.61 J.93 U.93 U.93 U.93 U.93 U.93 U 2-BUTANONE NLE J J 2-CHLOROTOLUENE NLE 73 1 NLE 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 2-HEXANONE NLE NLE NLE U.82 U.82 U.82 U.82 U.82 U.82 U.82 U.82 U.82 U 3-CHLOROPROPENE NLE U.63 U.63 U.63 U.63 U.63 U.63 U.63 U.63 U.63 U 4-ETHYLTOLUENE NLE NLE NLE NLE.98 U.98 U.98 U.98 U.98 U.98 U.98 U.98 U.98 U.98 U 4-METHYL-2-PENTANONE NLE J.82 U.45 J.82 U.82 U.82 U.82 U.82 U.82 U.82 U ACETONE BENZENE J J J.58 J J.48 J BENZYLCHLORIDE NLE NLE NLE.5 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U BROMODICHLOROMETHANE NLE 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 BROMOETHENE NLE U.87 U.87 U.87 U.87 U.87 U.87 U.87 U.87 U.87 U BROMOFORM NLE 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 BROMOMETHANE NLE U.78 U.78 U.78 U.78 U.78 U.78 U.78 U.78 U.78 U CARBON DISULFIDE NLE U.62 U.62 U.62 U.62 U.62 U.62 U.62 U.62 U CARBON TETRACHLORIDE J 1.3 U 1.3 U.61 J 1.3 U 1.3 U 1.3 U 1.3 U.61 J 1.3 U CHLOROBENZENE NLE J.92 U.69 J.92 U.92 U.92 U.92 U.92 U.92 U.92 U CHLOROETHANE NLE U.53 U.53 U.53 U.53 U.53 U.53 U.53 U.53 U.53 U CHLOROFORM J.98 U.98 U.98 U.98 U.98 U.98 U.98 U.98 U.98 U CHLOROMETHANE NLE CIS-1,2-DICHLOROETHENE NLE NLE.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U CIS-1,3-DICHLOROPROPENE NLE NLE NLE NLE.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U CYCLOHEXANE NLE U.69 U.69 U.38 J.69 U.69 U.69 U.69 U.69 U.69 U DIBROMOCHLOROMETHANE NLE 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 DICHLORODIFLUOROMETHANE NLE ETHANOL NLE NLE NLE NLE E 88.2 E ETHYLACETATE NLE NLE NLE NLE J J.61 J U ETHYLBENZENE J.87 U.42 J.52 J.87 U.87 U.87 U.87 U.87 U.87 U HEXACHLOROBUTADIENE NLE 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 HEXANE NLE J.7 U J.88.7 U.7 U.53 J.7 U ISOPROPYL ALCOHOL NLE NLE NLE M,P-XYLENES NLE NLE NLE NLE J J.56 J.87 U.87 U METHYLENE CHLORIDE J.69 U U.69 U U METHYLMETHACRYLATE NLE NLE NLE 73 NA.82 U NA NA NA NA.82 U.82 U NA.82 U MTBE U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U N-HEPTANE NLE NLE NLE NLE 2.82 U U.39 J.82 U.82 U K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\IndoorAirResults_91_211_4 June_24_211_JL 1 of 2

112 TABLE 5-7 INDOOR AIR ANALYTICAL RESULTS: FEBRUARY 211 EPA BUILDING 2: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Location ID: BG-1 2-BG-1 Sample Type: Sample Sample Duplicate Sample Duplicate Sample Duplicate Sample Lab Sample ID: JA JA JA JA JA JA JA JA JA JA Date: 9/24/21 2/23/211 9/24/21 9/24/21 1/8/21 1/8/21 2/23/211 2/23/211 9/24/21 2/23/211 Units: (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m 3 ) (ug/m3) (ug/m3) (ug/m3) Table B-1 DOD Risk- COMPOUND 1 Table 2 NJDEP Rapid Residential Generic Nonresidential Based Residential Air Action Level 3 Indoor Air Screening Generic Indoor Air Concentrations 2 Levels 3,4 Screening Levels 3,4 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) O-XYLENE NLE NLE NLE J.87 U.52 J.69 J.87 U.87 U.87 U.87 U.87 U.87 U PROPYLENE NLE NLE NLE U U.86 U.86 U.86 U U.67 J STYRENE NLE J.85 U.6 J.55 J.51 J.55 J.85 U.85 U.85 U.85 U TERT-BUTYL ALCOHOL NLE NLE.55 J.61 U J.61 U.61 U.61 U.61 U.61 U.61 U TETRACHLOROETHYLENE U U.27 U.27 U.27 U.27 U.27 U TETRAHYDROFURAN NLE NLE NLE NLE.5 J.59 U.59 U.32 J.59 U.32 J.59 U.59 U.59 U.59 U TOLUENE J TRANS-1,2-DICHLOROETHENE NLE U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U TRANS-1,3-DICHLOROPROPENE NLE NLE NLE NLE.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U TRICHLOROETHYLENE U U.21 U.21 U.21 U.21 U.52 TRICHLOROFLUOROMETHANE NLE J VINYL ACETATE NLE NLE NLE 21.7 U.7 U.7 U.7 U.7 U.7 U.7 U.7 U.7 U.7 U VINYL CHLORIDE U.51 U.51 U.51 U.51 U.51 U.51 U.51 U.51 U.51 U XYLENES (TOTAL) J J.56 J.87 U.87 U NOTES: AOC - Area of Concern ID - Identifier NLE - No Limit Established NJDEP - New Jersey Department of Environmental Protection J Estimated Value U - Not Detected Above Reporting Limit ug/m 3 - micrograms per cubic meter USACE - United States Army Corps of Engineers EPA - United States Environmental Protection Agency DOD Department of Defense Exceedances of NJDEP Nonresidential Generic Indoor Air Screening Levels are indicated by highlighting Exceedances of NJDEP Residential Generic Indoor Air Screening Levels are indicated by bolding 1 The compound list for this table includes the compounds analyzed under the TO-15 analysis. 2 Table B-1 USEPA Risk-Based Residential Air Concentrations as are provided in the DOD Vapor Intrusion Handbook document issued by the DOD January 29 and revised November NJDEP Indoor Air Screening Levels as are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March Table 1 is the regulatory screening level used for comparison of the analytical results. K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\IndoorAirResults_91_211_4 June_24_211_JL 2 of 2

113 FIGURES

114 2-2 Parameter [Criteria] 1/3/6 3/9/6 6/13/6 9/13/6 1/24/6 1/11/7 3/29/7 8/23/7 11/15/7 6/11/8 1/3/8 12/12/8 3/13/9 5/29/9 9/18/9 12/18/9 3/4/1 9/24/1 2/23/11 TETRACHLOROETHYLENE [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.33 U.27 U J.2 J.34 J 1.42 J U TRICHLOROETHYLENE [3] U J.32 J.21 U.21 J.21 U U DRAWING TITLE: METHYLENE CHLORIDE, PCE & TCE RESULTS FOR SUBSLAB SOIL GAS AND INDOOR AIR SAMPLES EPA BUILDING " = 2' 1/3/212 FIGURE: SCALE: DATE: 2-SG-2 Parameter [Criteria] 1/31/5 1/31/6 3/1/6 6/13/6 9/13/6 1/25/6 1/12/7 3/3/7 8/24/7 11/15/7 6/11/8 1/3/8 12/12/8 3/13/9 5/29/9 9/18/9 12/18/9 3/5/1 9/24/1 9/24/1 2/23/11 TETRACHLOROETHYLENE [34] 1.4 U U 14 U 14 U 14 U U J.27 J.34 J U TRICHLOROETHYLENE [27] 21 E D J.32 J.21 J.21 U U 2-BG-1 CLIENT NAME: U.S. ARMY CORPS OF ENGINEERS NEW ENGLAND & NEW YORK DISTRICTS PROJECT NAME: INDOOR AIR QUALITY REPORT #7 FORMER RARITAN ARSENAL EDISON, NEW JERSEY!(!(? h Building 2 h Parameter [Criteria] 9/24/1 2/23/11 TETRACHLOROETHYLENE [3].27 U.27 U TRICHLOROETHYLENE [3].21 U.52 EPA-4 Parameter [Criteria] 3/9/6 1/24/6 1/11/7 3/29/7 8/23/7 11/15/7 TETRACHLOROETHYLENE [3] 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U TRICHLOROETHYLENE [3] 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U PROJECT MANAGER: P. Bovitz CHECKED BY: D. Krumich CONTRACT No. DELIVERY ORDER NO. DRAWN/MODIFIED BY: J. Lynes 1/3/212 DATE CREATED: !(!(!( BG Parameter [Criteria] 3/13/9 5/29/9 9/18/9 12/18/9 3/4/1 TETRACHLOROETHYLENE [3].75.2 U.27 J.2 U.2 U TRICHLOROETHYLENE [3] J.59 J.21 U.21 U Parameter [Criteria] 1/3/6 3/9/6 6/13/6 9/13/6 1/24/6 1/11/7 3/29/7 8/23/7 11/15/7 6/11/8 1/3/8 12/12/8 3/13/9 5/29/9 9/18/9 12/18/9 3/4/1 9/24/1 9/24/1 1/8/1 1/8/1 2/23/11 2/23/11 TETRACHLOROETHYLENE [3] U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U J.41 J.47 J U.27 U.27 U.27 U TRICHLOROETHYLENE [3] U.21 U J.21 U.27 J.21 U U.21 U.21 U.21 U Legend: h!(? 81 Notes: Ambient Air Sample Location Indoor Air Sample Location Subslab Soil Gas Sample Location Building Boundary Exceeds NJ VIG Criteria (2)(3) Soil Gas Sample Results Indoor Air Sample Results Ambient Air Sample Results 1. Building Area: 2,2 square feet. 2. Subslab Soil Gas and Indoor Air Results compared to Table 1 (Generic Vapor Intrusion Screening Levels) of the NJDEP VIG, March The most stringent (Residential) criteria was used to identify exceedances. NJDEP = New Jersey Department of Environmental Protection PCE = Tetrachloroethylene TCE = Trichloroethylene D = Diluted Result J = Estimated Value U = Undetected Result VIG = Vapor Intrusion Guidance REPORT DATE: January 212 DRAWING: 166_EPA_2_IAQ.mxd PATH: K:/Raritan1/RaritanGIS/ Mxd/212_1_IAQ REVISION No. WORK ORDER No. Weston Solutions, Inc SM 25 Campus Drive Edison, New Jersey TEL: (732) Fax: (732) Graphic Scale In Feet RESULTS & CRITERIA ARE LISTED IN MICROGRAMS PER CUBIC METER (ug/m3)

115 5.5 EPA Building 25 EPA Building 25 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. Thirteen previous rounds of sub-slab soil gas sampling events were conducted by USACE from January 25 through March 29, and 12 rounds of indoor air sampling were conducted in January 26 through March 29. Current investigation activities include sub-slab soil gas and indoor air sample collection during the September 21 and February 211 sampling events Prior Investigations During Area 18E investigations, TCE concentrations were detected in both soil and groundwater exceeding the NJDEP criterion at locations within 1 ft of Building 25. Sub-slab soil gas samples have been collected at Building 25 since December 24 by the EPA and USACE. Benzene, carbon tetrachloride, chloroform, and TCE were detected in sub-slab soil gas exceeding the EPA Table 2C- screening benchmarks. In addition, TCE concentrations were detected in the indoor air by EPA, suggesting soil gas is the source of the TCE concentrations detected during the EPA investigation. USACE collected a subsequent round of sub-slab soil gas and indoor air samples in January 26. The results of this investigation did not suggest the presence of a vapor intrusion pathway as TCE was detected in sub-slab soil gas exceeding the NJDEP VIG screening levels but not in indoor air. In June 28, September 28, and March 29, the analytical results did not have detections of PCE and TCE above the current regulatory screening levels. Methylene chloride was detected in the sub-slab soil gas above current regulatory screening levels at one sampling point (SG-15) and in indoor air at two locations (25-11 and 25-19). Methylene chloride was not detected in groundwater analytical data and was assumed to be related to non-dod activities. However, Building 25 was undergoing renovation during these sampling events and could have been affected by those activities. Building 25 also has a sub-slab remediation system. Continued semi-annual sub-slab and indoor air sampling of this building was recommended in the Draft Indoor Air Quality Report #6. A summary of the detection frequency and concentration range of compounds detected in subslab soil gas and indoor air are provided in Appendix Table E-7 and E-8, respectively Current Investigation Five sub-slab soil gas locations were sampled during the September 21 and February 211 sampling events. Due to a SUMMA canister malfunctioning during the September sampling event, location 25-SG-11 was resampled in October 21. Four indoor air locations were collected during the September 21 sampling event. Location was not sampled in September due to EPA renovation activities occurring during the sampling event. Since the renovation was completed in December 21, location was sampled in February 211 along with the four other indoor air sample locations. Samples were collected in Bay A, Bay B, 5-11

116 Training Center, and Small Conference Room. Sub-slab soil gas and indoor air sample locations for EPA Building 25 are shown on Figure Sub-slab Soil Gas Results During the September 21, October 21, and February 211 sampling events, the analytical results of sub-slab soil gas had TCE concentrations above the NJDEP VIG screening levels. Location SG-11 also had chloroform concentrations exceeding the NJDEP VIG screening levels during the October 21 and February 211 sampling event. PCE concentrations were not detected above NJDEP VIG screening levels in the sub-slab soil gas sampled collected during these sampling events. The complete sub-slab soil gas results for the current investigation are shown on Table 5-8. The sample locations are depicted on Figure 5-4. The following table contains a summary of the subslab soil gas exceeding NJDEP VIG screening levels. Compound No. of Samples Exceeding* NJDEP VIG Table 1 Residential Sub-slab Soil Gas Screening Criteria and Exceedances Criterion (ug/m 3 ) NJDEP VIG Table 1 Non-Residential Sub-slab Soil Gas Screening Criteria and Exceedances Criterion (ug/m 3 ) Range of Concentrations Exceeding (ug/m 3 ) TCE (September 21) 2 of TCE (October 21) 1 of TCE (February 211) 2 of Chloroform (October 21) 1 of Chloroform (February 211) 1 of * Including duplicate samples Indoor Air Sampling Results There were no VOC concentrations detected above NJDEP VIG or the DOD Risk-Based Residential screening levels during the September 21 or February 211 sampling event. The complete indoor air sampling results for the current investigations are shown on Table Integrated Discussion of Results The analytical results for Building 25 did not indicate PCE concentrations detected in the subslab soil gas or indoor air exceeding NJDEP VIG screening levels for the September 21, October 21, and February 211 sampling events. While TCE was detected in soil gas during all three sampling events it was not detected in the indoor air above NJDEP VIG screening levels. This is likely due to Building 25 having a sub-slab remediation system. 5-12

117 5.5.6 Conclusions and Recommendations TCE was detected in sub-slab soil gas samples exceeding NJDEP VIG screening levels but concentrations in indoor air did not exceed the screening levels. Since TCE was not detected in indoor air, it is assumed that the exposure pathway is incomplete likely due to the sub-slab depressurization remediation system within the building. Continued semi-annual sub-slab and indoor air sampling of this building is recommended for the next year. USACE will evaluate the data to determine if additional sampling is required or if the sampling can be curtailed as per the recommendations of the proposed groundwater/vi FS. 5-13

118 TABLES

119 TABLE 5-8 SUBSLAB SOIL GAS ANALYTICAL RESULTS: FEBRUARY 211 EPA BUILDING 25: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey COMPOUND 1 Residential Generic Soil Gas Screening Levels 2,3 Location ID: Sample Type: Lab Sample ID: Date: Units: Nonresidential Generic Soil Gas Screening Levels 2,3 25-SG-1 Duplicate JA /24/21 (ug/m 3 ) 25-SG-1 25-SG-1 25-SG SG SG SG SG SG SG SG SG SG-19 Sample Sample Sample Sample Sample Duplicate Sample Sample Sample Sample Duplicate Sample JA /24/21 JA /23/211 JA /8/21 JA /23/211 JA /24/21 JA /23/211 JA /23/211 JA /24/21 JA /23/211 JA /24/21 JA /23/211 JA /23/211 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m3) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 1,1,2,2-TETRACHLOROETHANE U 5.5 U 5.5 U 5.5 U 5.5 U 5.5 U 5.5 U 5.5 U 5.5 U 5.5 U 5.5 U 5.5 U 5.5 U 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 1,1,2-TRICHLOROETHANE U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 1,1-DICHLOROETHANE U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 1,1-DICHLOROETHENE U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 1,2 - DIBROMOETHANE U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 1,2,4-TRICHLOROBENZENE U 5.9 U 5.9 U 5.9 U 5.9 U 5.9 U 5.9 U 5.9 U 5.9 U 5.9 U 5.9 U 5.9 U 5.9 U 1,2,4-TRIMETHYLBENZENE NLE NLE 3.9 U 3.9 U 3.9 U 2.6 J 3.9 U 3.9 U 3.9 U 3.9 U 2.2 J 3.7 J 3.9 U 3.2 J 2.5 J 1,2-DICHLOROBENZENE U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 1,2-DICHLOROETHANE U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 1,2-DICHLOROPROPANE 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 1,2-DICHLOROTETRAFLUOROETHANE NLE NLE 5.6 U 5.6 U 5.6 U 5.6 U 5.6 U 5.6 U 5.6 U 5.6 U 5.6 U 5.6 U 5.6 U 5.6 U 5.6 U 1,3,5-TRIMETHYLBENZENE NLE NLE 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 1,3-BUTADIENE U 1.8 U 1.8 U 1.8 U 1.8 U 1.8 U 1.8 U 1.8 U 1.8 U 1.8 U 1.8 U 1.8 U 1.8 U 1,3-DICHLOROBENZENE U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 1,4-DICHLOROBENZENE U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 1,4-DIOXANE NLE NLE 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2,2,4-TRIMETHYLPENTANE NLE NLE 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 2-BUTANONE U 2.4 U U U 1.5 J CHLOROTOLUENE U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 2-HEXANONE NLE NLE 3.3 U 3.3 U 3.3 U 1.5 J 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3-CHLOROPROPENE U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 4-ETHYLTOLUENE NLE NLE 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 4-METHYL-2-PENTANONE U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U ACETONE BENZENE U 2.6 U 2.6 U U 2.6 U 2.6 U 2.6 U 2.6 U 2.6 U 2.6 U 1.2 J 1.2 J BENZYLCHLORIDE NLE NLE 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U BROMODICHLOROMETHANE U 5.4 U 5.4 U 5.4 U 5.4 U 5.4 U 5.4 U 5.4 U 5.4 U 5.4 U 5.4 U 5.4 U 5.4 U BROMOETHENE U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U BROMOFORM U 8.3 U 8.3 U 8.3 U 8.3 U 8.3 U 8.3 U 8.3 U 8.3 U 8.3 U 8.3 U 8.3 U 8.3 U BROMOMETHANE U 3.1 U 3.1 U 3.1 U 3.1 U 3.1 U 3.1 U 3.1 U 3.1 U 3.1 U 3.1 U 3.1 U 3.1 U CARBON DISULFIDE U 1.3 J 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 1.2 J 2.5 U 2.5 U 2.5 U 2.5 U CARBON TETRACHLORIDE U 5 U 4.9 J 5 U 5 U 5 U 5 U 5 U 5 U 5 U 5 U CHLOROBENZENE 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 CHLOROETHANE 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 CHLOROFORM J U 3.9 U 3.9 U 2.6 J 3.6 J 3.9 U 3.9 U 3.9 U CHLOROMETHANE J 1.7 U 1.7 U 1.2 J 1.7 U 1.6 J 1.2 J 1.1 J 1.7 U 1.7 U 1.4 J 1.2 J.99 J CIS-1,2-DICHLOROETHENE U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U CIS-1,3-DICHLOROPROPENE NLE NLE 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U CYCLOHEXANE U 2.8 U 2.8 U 2.8 U 2.8 U 1.6 J 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U DIBROMOCHLOROMETHANE U 6.8 U 6.8 U 6.8 U 6.8 U 6.8 U 6.8 U 6.8 U 6.8 U 6.8 U 6.8 U 6.8 U 6.8 U DICHLORODIFLUOROMETHANE J 2.8 J 2 J 2.7 J 2.2 J 2.5 J 2.9 J 2.2 J 2.8 J 2.7 J 2.5 J 3 J 2.8 J ETHANOL NLE NLE 3.8 U 3.8 U ETHYLACETATE NLE NLE 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U U 2.9 U 2.1 J 2.9 U 1.7 J 1.9 J ETHYLBENZENE U 3.5 U 3.5 U U 2.5 J 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U HEXACHLOROBUTADIENE U 8.5 U 8.5 U 8.5 U 8.5 U 8.5 U 8.5 U 8.5 U 8.5 U 8.5 U 8.5 U 8.5 U 8.5 U HEXANE J 2.8 U U 2.8 J 2.5 J 1.7 J 1.6 J 2.8 U 2.8 U 2.8 U 2.8 U ISOPROPYL ALCOHOL NLE NLE U M,P-XYLENES NLE NLE 3.5 U 3.5 U 3.5 U U J 1.9 J 3 J J METHYLENE CHLORIDE U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U U 2.8 U 2.8 U 2.8 U 2.8 U METHYLMETHACRYLATE NLE NLE NA NA 3.3 U NA 3.3 U NA 3.3 U 3.3 U NA 3.3 U NA 3.3 U 3.3 U MTBE U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U N-HEPTANE NLE NLE 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 2.1 J 3.3 U O-XYLENE NLE NLE 3.5 U 3.5 U 3.5 U U 2.4 J 3.5 U 3.5 U 2.9 J 3.5 U 3.5 U 3.5 U 3.5 U PROPYLENE NLE NLE 1.7 J 3.4 U 3.4 U 3.4 U 1.9 J 3.4 U 2.1 J 3.4 U 1.9 J 2.7 J 3.4 U 2.6 J 2.7 J STYRENE U 3.4 U 3.4 U 3.4 U 3.4 U 3.4 U 3.4 U 3.4 U 3.4 U 3.4 U 3.4 U 3.4 U 3.4 U TERT-BUTYL ALCOHOL U 2.4 U 2.4 U 1.8 J 2.4 U U 2.4 U U U 2.4 U TETRACHLOROETHYLENE U 1.1 U 1.1 U U 1.1 U 1.1 U K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\SoilGasResults_91_211_9 June_24_211_JL 1 of 2

120 TABLE 5-8 SUBSLAB SOIL GAS ANALYTICAL RESULTS: FEBRUARY 211 EPA BUILDING 25: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey COMPOUND 1 Residential Generic Soil Gas Screening Levels 2,3 Location ID: Sample Type: Lab Sample ID: Date: Units: Nonresidential Generic Soil Gas Screening Levels 2,3 25-SG-1 Duplicate JA /24/21 (ug/m 3 ) 25-SG-1 25-SG-1 25-SG SG SG SG SG SG SG SG SG SG-19 Sample Sample Sample Sample Sample Duplicate Sample Sample Sample Sample Duplicate Sample JA /24/21 JA /23/211 JA /8/21 JA /23/211 JA /24/21 JA /23/211 JA /23/211 JA /24/21 JA /23/211 JA /24/21 JA /23/211 JA /23/211 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m3) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) TETRAHYDROFURAN NLE NLE 2.4 U 2.4 U 2.4 U 2.4 U 2.4 U 2.4 U 2.4 U 2.4 U 1.3 J 2.4 U 1.6 J 2.4 U 2.4 U TOLUENE J 3 U 3 U J TRANS-1,2-DICHLOROETHENE U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U TRANS-1,3-DICHLOROPROPENE NLE NLE 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U TRICHLOROETHYLENE U.86 U U.81 J.86 U TRICHLOROFLUOROMETHANE J 2.6 J 4.5 U 2.1 J 4.5 U 4.5 U 4.5 U 4.5 U 4.5 U 4.5 U 4.5 U 4.5 U 4.5 U VINYL ACETATE NLE NLE 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U VINYL CHLORIDE U 2U 2U 2U 2U 2U 2U 2U 2U 2U 2U 2U 2U XYLENES (TOTAL) U 3.5 U 3.5 U U J 1.9 J J NOTES: AOC - Area of Concern ID - Identifier NLE - No Limit Established NJDEP - New Jersey Department of Environmental Protection J Estimated Value U - Not Detected Above Reporting Limit ug/m 3 - micrograms per cubic meter EPA - United States Environmental Protection Agency Exceedances of NJDEP Nonresidential Generic Indoor Air Screening Levels are indicated by highlighting Exceedances of NJDEP Residential Generic Indoor Air Screening Levels are indicated by bolding 1 The compound list for this table includes the compounds analyzed under the TO-15 analysis. 2 NJDEP Soil Gas Screening Levels as are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March Table 1 is the regulatory screening level used for comparison of the analytical results. K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\SoilGasResults_91_211_9 June_24_211_JL 2 of 2

121 TABLE 5-9 INDOOR AIR ANALYTICAL RESULTS: FEBRUARY 211 EPA BUILDING 25: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey COMPOUND 1 Table 2 NJDEP Rapid Action Level 3 Residential Generic Indoor Air Screening Levels 3,4 Nonresidential Generic Indoor Air Screening Levels 3,4 Location ID: BG-1 25-BG-1 Sample Type: Duplicate Sample Sample Sample Duplicate Sample Sample Sample Sample Sample Sample Lab Sample ID: JA JA JA JA JA JA JA JA JA JA JA JA JA Date: 9/24/21 9/24/21 2/23/211 9/24/21 2/23/211 2/23/211 9/24/21 2/23/211 2/23/211 9/24/21 2/23/211 9/24/21 2/23/211 Units: (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Table B-1 DOD Risk- Based Residential Air Concentrations 2 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE NLE U 1.1 U 1.1 U.93 J 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 1,1,2,2-TETRACHLOROETHANE NLE 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 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE NLE J 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 J 1.5 U 1,1,2-TRICHLOROETHANE NLE 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-DICHLOROETHANE NLE U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U 1,1-DICHLOROETHENE NLE U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U 1,2 - DIBROMOETHANE NLE 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 1,2,4-TRICHLOROBENZENE NLE 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 1,2,4-TRIMETHYLBENZENE NLE NLE NLE J.79 J.98 U J.98 U J.59 J.98 U.98 U.98 U 1,2-DICHLOROBENZENE NLE 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-DICHLOROETHANE NLE U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U 1,2-DICHLOROPROPANE NLE U.92 U.92 U.92 U.92 U.92 U.92 U.92 U.92 U.92 U.92 U.92 U.92 U 1,2-DICHLOROTETRAFLUOROETHANE NLE NLE 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 U 1.4 U 1.4 U 1.4 U 1.4 U 1,3,5-TRIMETHYLBENZENE NLE NLE NLE NLE.98 U.98 U.98 U U.98 U.79 J.98 U.98 U.98 U.98 U.98 U.98 U 1,3-BUTADIENE NLE U.44 U.44 U.44 U.44 U.44 U.44 U.44 U.44 U.44 U.44 U.44 U.44 U 1,3-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 U 1.2 U 1.2 U 1.2 U 1.2 U 1,4-DICHLOROBENZENE NLE J.72 J 1.2 U.72 J 1.2 U 1.2 U.72 J 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1,4-DIOXANE NLE NLE NLE U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U 2,2,4-TRIMETHYLPENTANE NLE NLE NLE NLE.61 J.75 J.93 U.75 J.93 U.93 U.7 J.56 J.93 U.46 J.93 U.93 U.93 U 2-BUTANONE NLE J CHLOROTOLUENE NLE 73 1 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 2-HEXANONE NLE NLE NLE U.82 U.82 U.41 J.82 U.82 U.82 U.82 U.82 U.82 U.82 U.82 U.82 U 3-CHLOROPROPENE NLE U.63 U.63 U.63 U.63 U.63 U.63 U.63 U.63 U.63 U.63 U.63 U.63 U 4-ETHYLTOLUENE NLE NLE NLE NLE.98 U.98 U.98 U.79 J.98 U.98 U.54 J.98 U.98 U.98 U.98 U.98 U.98 U 4-METHYL-2-PENTANONE NLE U.82 U.82 U.9.82 U.82 U.61 J.4 J.82 U.82 U U.82 U ACETONE BENZENE J.58 J J J 1 BENZYLCHLORIDE NLE NLE NLE.5 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 BROMODICHLOROMETHANE NLE 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 BROMOETHENE NLE U.87 U.87 U.87 U.87 U.87 U.87 U.87 U.87 U.87 U.87 U.87 U.87 U BROMOFORM NLE 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 BROMOMETHANE NLE U.78 U.78 U.78 U.78 U.78 U.78 U.78 U.78 U.78 U.78 U.78 U.78 U CARBON DISULFIDE NLE U U.62 U.62 U.62 U U.62 U.62 U.62 U.62 U.62 U CARBON TETRACHLORIDE J.61 J 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U.63 J 1.3 U.56 J.63 J CHLOROBENZENE NLE U.74 J.92 U.92 U.92 U.92 U.88 J.92 U.92 U.92 U.92 U.92 U.92 U CHLOROETHANE NLE U.53 U.53 U.53 U.53 U.53 U.53 U.53 U.53 U.53 U.53 U.53 U.53 U CHLOROFORM U.98 U.98 U.98 U.98 U.98 U.98 U.98 U.98 U.98 U.98 U.98 U.98 U CHLOROMETHANE NLE CIS-1,2-DICHLOROETHENE NLE NLE.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U CIS-1,3-DICHLOROPROPENE NLE NLE NLE NLE.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U CYCLOHEXANE NLE U.69 U.69 U U.69 U.48 J.69 U.69 U.69 U.69 U.69 U.69 U DIBROMOCHLOROMETHANE NLE 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 DICHLORODIFLUOROMETHANE NLE ETHANOL NLE NLE NLE NLE E E ETHYLACETATE NLE NLE NLE NLE U U.72 U U U ETHYLBENZENE J.56 J.87 U 3.61 J.56 J J.74 J.65 J.87 U.87 U HEXACHLOROBUTADIENE NLE 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 HEXANE NLE J J.39 J U.74.7 U J ISOPROPYL ALCOHOL NLE NLE NLE U M,P-XYLENES NLE NLE NLE NLE J U.56 J METHYLENE CHLORIDE U METHYLMETHACRYLATE NLE NLE NLE 73 NA NA.82 U NA.82 U.82 U NA.82 U.82 U NA.82 U NA.82 U MTBE U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U N-HEPTANE NLE NLE NLE NLE.41 J.45 J.82 U J.82 U U.61 J.82 U.82 U O-XYLENE NLE NLE NLE J.69 J.87 U 3.65 J.56 J J.69 J.52 J.87 U.87 U PROPYLENE NLE NLE NLE U.86 U U U U.86 U U 1.4 STYRENE NLE U.85 U.85 U U.85 U.55 J.85 U.85 U.6 J.85 U.85 U.85 U K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\IndoorAirResults_91_211_4 June_24_211_JL 1 of 2

122 TABLE 5-9 INDOOR AIR ANALYTICAL RESULTS: FEBRUARY 211 EPA BUILDING 25: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Location ID: BG-1 25-BG-1 Sample Type: Duplicate Sample Sample Sample Duplicate Sample Sample Sample Sample Sample Sample Lab Sample ID: JA JA JA JA JA JA JA JA JA JA JA JA JA Date: 9/24/21 9/24/21 2/23/211 9/24/21 2/23/211 2/23/211 9/24/21 2/23/211 2/23/211 9/24/21 2/23/211 9/24/21 2/23/211 Units: (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) COMPOUND 1 Table 2 NJDEP Rapid Action Level 3 Residential Generic Indoor Air Screening Nonresidential Generic Indoor Air Table B-1 DOD Risk- Based Residential Air Concentrations 2 Levels 3,4 Screening Levels 3,4 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) TERT-BUTYL ALCOHOL NLE NLE.61 U.61 U.61 U U.61 U U.61 U U.61 U.61 U TETRACHLOROETHYLENE U U.6.27 U.27 U U U.27 U.27 U TETRAHYDROFURAN NLE NLE NLE NLE.59 U.59 U.59 U U.59 U U.28 J J.59 U.59 U TOLUENE TRANS-1,2-DICHLOROETHENE NLE U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U TRANS-1,3-DICHLOROPROPENE NLE NLE NLE NLE.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U TRICHLOROETHYLENE U.21 U.21 U J.21 U U.21 U.21 U.21 U.21 U TRICHLOROFLUOROMETHANE NLE VINYL ACETATE NLE NLE NLE 21.7 U.7 U.7 U.7 U.7 U.7 U.7 U.7 U.7 U.7 U.7 U.7 U.7 U VINYL CHLORIDE U.51 U.51 U.51 U.51 U.51 U.51 U.51 U.51 U.51 U.51 U.51 U.51 U XYLENES (TOTAL) J U.56 J NOTES: AOC - Area of Concern ID - Identifier NLE - No Limit Established NJDEP - New Jersey Department of Environmental Protection J Estimated Value U - Not Detected Above Reporting Limit ug/m 3 - micrograms per cubic meter USACE - United States Army Corps of Engineers USACE - United States Army Corps of Engineers EPA - United States Environmental Protection Agency DOD Department of Defense Exceedances of NJDEP Nonresidential Generic Indoor Air Screening Levels are indicated by highlighting Exceedances of NJDEP Residential Generic Indoor Air Screening Levels are indicated by bolding 1 The compound list for this table includes the compounds analyzed under the TO-15 analysis. 2 Table B-1 USEPA Risk-Based Residential Air Concentrations as are provided in the DOD Vapor Intrusion Handbook document issued by the DOD January 29 and revised November NJDEP Indoor Air Screening Levels as are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March Table 1 is the regulatory screening level used for comparison of the analytical results. K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\IndoorAirResults_91_211_4 June_24_211_JL 2 of 2

123 FIGURES

124 25-SG SG Parameter [Criteria] 1/3/6 6/13/6 9/13/6 1/11/7 4/9/7 8/27/7 11/14/7 6/3/8 9/3/8 3/12/9 9/17/9 3/3/1 2/23/11 TETRACHLOROETHYLENE [3] U 1.4 U 1.4 U 1.4 U U.33 U U.2 U.27 U TRICHLOROETHYLENE [3] 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U U.21 U.21 U.21 U.21 U Parameter [Criteria] 1/31/6 6/27/6 9/13/6 1/12/7 4/12/7 8/29/7 11/14/7 6/3/8 9/3/8 3/12/9 9/18/9 3/16/1 9/24/1 2/23/11 TETRACHLOROETHYLENE [34] 14 U 14 U 14 U U 14 U J.2 U 2 2 TRICHLOROETHYLENE [27] Parameter [Criteria] 1/31/6 6/13/6 9/13/6 1/12/7 4/1/7 8/29/7 11/14/7 6/3/8 9/3/8 3/12/9 9/18/9 3/16/1 9/24/1 2/23/11 2/23/11 TETRACHLOROETHYLENE [34] 14 U 14 U 14 U U 14 U 14 U U J.2 U 1.1 U 1.1 U 1.1 U TRICHLOROETHYLENE [27] U 11 U 11 U U.59 J.21 U.86 U.81 J.86 U Parameter [Criteria] 1/3/6 6/13/6 9/13/6 1/11/7 4/9/7 8/27/7 11/14/7 6/3/8 9/3/8 3/12/9 9/17/9 3/3/1 9/24/1 2/23/11 TETRACHLOROETHYLENE [3] 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U.33 U.34.2 J.2 U U TRICHLOROETHYLENE [3] 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U U.21 U.21 U.21 U.21 U?!(?!( DRAWING TITLE: CLIENT NAME: PCE & TCE RESULTS FOR SUBSLAB SOIL GAS AND INDOOR AIR SAMPLES U.S. ARMY CORPS OF ENGINEERS NEW ENGLAND & NEW YORK DISTRICTS PROJECT NAME: EPA BUILDING 25 FIGURE: SCALE: DATE: INDOOR AIR QUALITY REPORT #7 FORMER RARITAN ARSENAL EDISON, NEW JERSEY 5-4 1" = 1' 1/3/ SG-12 Parameter [Criteria] 1/31/5 1/31/6 6/13/6 9/13/6 1/12/7 4/1/7 8/29/7 11/14/7 6/3/8 9/3/8 9/24/1 2/23/11 2/23/11 TETRACHLOROETHYLENE [34] 1.4 U 14 U 14 U 14 U U 14 U 14 U U 1.1 U 1.1 U TRICHLOROETHYLENE [27] 28 D U.86 U Parameter [Criteria] 1/3/6 6/13/6 9/13/6 1/11/7 4/9/7 8/27/7 11/14/7 6/3/8 9/3/8 3/11/9 9/17/9 3/3/1 9/24/1 2/23/11 2/23/11 TETRACHLOROETHYLENE [3] 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U.33 U J U.32 TRICHLOROETHYLENE [3] 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U U.21 U.21 U J.28?!(!(?!(!( PROJECT MANAGER: P. Bovitz CHECKED BY: D. Krumich CONTRACT No. DELIVERY ORDER NO. DRAWN/MODIFIED BY: J. Lynes DATE CREATED: 1/3/ Parameter [Criteria] 1/3/6 1/3/6 6/13/6 6/13/6 9/13/6 9/13/6 1/11/7 4/9/7 8/27/7 11/14/7 6/3/8 9/3/8 3/12/9 9/17/9 3/3/1 9/24/1 2/23/11 TETRACHLOROETHYLENE [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.33 U U U TRICHLOROETHYLENE [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.22 U J.21 U.21 U U SG-11 Parameter [Criteria] 1/31/5 1/31/6 6/13/6 9/13/6 1/12/7 4/1/7 8/29/7 11/14/7 6/3/8 9/3/8 1/8/1 2/23/11 TETRACHLOROETHYLENE [34] U 14 U U 14 U 14 U TRICHLOROETHYLENE [27] D U Parameter [Criteria] 1/3/6 6/13/6 9/13/6 1/11/7 4/9/7 8/27/7 11/14/7 6/3/8 9/3/8 3/11/9 9/17/9 3/3/1 9/24/1 9/24/1 2/23/11 TETRACHLOROETHYLENE [3] 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U J U U TRICHLOROETHYLENE [3] 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U U.21 U.21 U.21 U.21 U.21 U 25-SG-1 Parameter [Criteria] 1/31/6 6/13/6 9/13/6 1/12/7 4/1/7 8/29/7 11/14/7 6/3/8 9/3/8 3/12/9 9/18/9 9/24/1 9/24/1 2/23/11 TETRACHLOROETHYLENE [34] 14 U 14 U 14 U U 14 U 14 U J TRICHLOROETHYLENE [27] U 11 U 11 U BG-1 Parameter [Criteria] 9/24/1 2/23/11 TETRACHLOROETHYLENE [3].27 U.27 U TRICHLOROETHYLENE [3].21 U.21 U Building 25?!(!( h Legend: h!(? 31 Notes: Ambient Air Sample Location Indoor Air Sample Location Subslab Soil Gas Sample Location Building Boundary Exceeds NJ VIG Criteria (2)(3) Soil Gas Sample Results Indoor Air Sample Results Ambient Air Sample Results 1. Building Area: 17,5 square feet. 2. Subslab Soil Gas and Indoor Air Results compared to Table 1 (Generic Vapor Intrusion Screening Levels) of the NJDEP VIG, March The most stringent (Residential) criteria was used to identify exceedances. NJDEP = New Jersey Department of Environmental Protection PCE = Tetrachloroethylene TCE = Trichloroethylene D = Diluted Result J = Estimated Value U = Undetected Result VIG = Vapor Intrusion Guidance REPORT DATE: January 212 DRAWING: 1661_EPA_25_IAQ.mxd PATH: K:/Raritan1/RaritanGIS/ Mxd/212_1_IAQ REVISION No. WORK ORDER No. Weston Solutions, Inc SM 25 Campus Drive Edison, New Jersey TEL: (732) Fax: (732) Graphic Scale In Feet RESULTS & CRITERIA ARE LISTED IN MICROGRAMS PER CUBIC METER (ug/m3)

125 5.6 EPA Building 29 EPA Building 29 is a single-story brick building built on a concrete slab on grade, located to the west of the Groundwater AOC 8A/B plume. The building consists of office space and is surrounded by a parking lot with a small landscaped and lawn area. Nine previous sampling events were conducted by USACE from January 26 through March 21. Current investigation activities include sub-slab soil gas and indoor air sample collected during the September 21 and February 211 sampling events Prior Investigations USACE has collected several rounds of sub-slab soil gas and indoor air samples from January 26 through March 29. The results of previous investigations did not suggest the presence of a complete vapor intrusion pathway since, while TCE was detected in sub-slab soil gas exceeding NJDEP VIG screening levels, it was not detected consistently in indoor air. PCE and TCE were only detected in indoor air above NJDEP VIG screening level during one of seven sampling events (June 28). During the March 29 sampling event PCE, chloroform, and methylene chloride were detected in sub-slab soil gas under Building 29 at concentrations exceeding their NJDEP VIG screening levels. Methylene chloride was also detected in several indoor air sampling location points during the March 29 event, as well as, previous sampling events (September 28, June 28, and November 27). Therefore, the USACE agreed to continue monitoring on a semi-annual basis for EPA Building 29. A summary of the detection frequency and concentration range of compounds detected in subslab soil gas and indoor air are provided in Appendix Table E-9 and E-1, respectively Current Investigation Six sub-slab soil gas points were sampled from the cage areas (Randy Braun/MAB s cage and Lockheed Martin s cage), Griffen s service warehouse, the kitchen/office area, the extraction lab and the microscopy lab during the September 21 and February 211 sampling event. Due to a SUMMA canister malfunctioning in September, the sample from location SG-9 was not analyzed but resampled in October 21. Sub-slab soil gas and indoor air sample locations at EPA Building 25 are shown on Figure Sub-slab Soil Gas Results During the September 21 sampling event, chloroform and PCE concentrations in sub-slab soil gas exceeded the NJDEP VIG screening levels. During the February 211 sampling event, chloroform and carbon tetrachloride concentrations in soil gas exceeded the screening levels. No other VOCs were detected at concentrations exceeding the NJDEP VIG screening levels. The sample locations are depicted on Figure 5-5 along with the TCE and PCE exceedances noted in red. 5-14

126 The complete sub-slab soil gas results for the current investigation are shown on Table 5-1. The following table contains a summary of the sub-slab soil gas exceeding NJDEP VIG screening levels. Compound No. of Samples Exceeding* NJDEP VIG Table 1 Residential Sub-slab Soil Gas Screening Criteria and Exceedances Criterion (ug/m 3 ) 5-15 NJDEP VIG Table 1 Non-Residential Sub-slab Soil Gas Screening Criteria and Exceedances Criterion (ug/m 3 ) Range in Concentration Exceeding (ug/m 3 ) Chloroform (September 21) 1 of Chloroform (February 211) 1 of PCE (September 21) 1 of Carbon Tetrachloride (February 211) 1 of *Including duplicate samples Indoor Air Sampling Results During the September 21 sampling event, methylene chloride and benzene were detected in indoor air above NJDEP VIG screening levels. Benzene concentrations also exceeded the screening levels during the February 211 sampling round. Benzene may be related to gasoline used around the building and in the warehouse spaces. Neither of these VOCs were detected above the screening levels in the background ambient sample; however, PCE concentrations (2 ug/m 3 ) did exceed in the September 21 ambient sample. Historically, PCE has been detected above NJDEP VIG Screening Levels in ambient background samples during June 28 and March 21 as well as the September 21 sampling event. The complete indoor air and background air results for the current investigation are shown on Table The PCE and TCE sample results for indoor air are shown on Figure 5-5. The compounds that exceeded the NJDEP VIG screening levels are shown in the table below: Compound No. of Samples Exceeding* NJDEP VIG Table 1 Residential Indoor Air Screening Criteria and Exceedances Criterion (ug/m 3 ) NJDEP VIG Table 1 Non-Residential Indoor Air Screening Criteria and Exceedances Criterion (ug/m 3 ) Range in Concentration Exceeding (ug/m 3 ) PCE (September 21) 1 of Benzene (September 21) 2 of Benzene (February 211) 4 of Methylene chloride (September 21) 2 of Methylene chloride (February 211) 2 of *Including duplicate samples.

127 5.6.5 Integrated Discussion of Results Chloroform and PCE concentrations were detected in sub-slab soil gas above the NJDEP VIG screening levels in September 21. During February 211, carbon tetrachloride and chloroform concentrations in soil gas exceeded the NJDEP VIG screening levels. None of these compounds were detected in indoor air but benzene and methylene chloride were detected in concentrations exceeding NJDEP VIG screening levels. Although PCE was not detected in indoor air, concentrations were detected in the background ambient sample. Since the compounds vary by media, there does not appear to be a complete exposure pathway for VOC concentrations Conclusions and Recommendations PCE as well as other VOCs continue to be detected at concentrations above NJDEP VIG Screening Levels in both sub-slab soil gas and indoor air. TCE concentrations in both soil gas and indoor air continue to remain below NJDEP VIG screening levels. Although, there does not appear to be a complete exposure pathway, the continuation of semi-annual monitoring of Building 29 is recommended for the next year. USACE will evaluate the data to determine if additional sampling is necessary or if it can be curtailed as per the recommendations of the proposed groundwater/vi FS. 5-16

128 TABLES

129 TABLE 5-1 SUBSLAB SOIL GAS ANALYTICAL RESULTS: FEBRUARY 211 EPA BUILDING 29: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey COMPOUND 1 Residential Generic Soil Gas Screening Levels 2,3 Location ID: Sample Type: Lab Sample ID: Date: Units: Nonresidential Generic Soil Gas Screening Levels 2,3 29-SG-1 29-SG-1 29-SG-1 29-SG-2 29-SG-2 29-SG-4 29-SG-4 29-SG-4 29-SG-6 29-SG-6 29-SG-9 29-SG-9 29-SG-9 29-SG-14 Sample Duplicate Sample Duplicate Sample Sample Duplicate Sample Sample Sample Sample Duplicate Sample Sample JA JA JA JA JA JA JA JA JA JA JA JA JA JA /24/21 2/23/211 2/23/211 9/24/21 2/23/211 9/24/21 2/23/211 2/23/211 9/24/21 2/23/211 1/8/21 2/23/211 2/23/211 9/24/21 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE U 4.4 U 4.4 U 2.2 J 4.4 U 4.4 U 4.4 U 4.4 U 3.5 J 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 1,1,2,2-TETRACHLOROETHANE U 5.5 U 5.5 U 5.5 U 5.5 U 5.5 U 5.5 U 5.5 U 5.5 U 5.5 U 5.5 U 5.5 U 5.5 U 5.5 U 5.5 U 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 1,1,2-TRICHLOROETHANE U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 4.4 U 1,1-DICHLOROETHANE U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 1,1-DICHLOROETHENE U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 1,2 - DIBROMOETHANE U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 6.1 U 1,2,4-TRICHLOROBENZENE U 5.9 U 5.9 U 5.9 U 5.9 U 5.9 U 5.9 U 5.9 U 5.9 U 5.9 U 5.9 U 5.9 U 5.9 U 5.9 U 5.9 U 1,2,4-TRIMETHYLBENZENE NLE NLE 3.9 U U U U 3.9 U 3.5 J 3.9 U U 5.4 1,2-DICHLOROBENZENE U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 1,2-DICHLOROETHANE U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 1,2-DICHLOROPROPANE 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 U 3.7 U 1,2-DICHLOROTETRAFLUOROETHANE NLE NLE 5.6 U 5.6 U 5.6 U 5.6 U 5.6 U 5.6 U 5.6 U 5.6 U 5.6 U 5.6 U 5.6 U 5.6 U 5.6 U 5.6 U 5.6 U 1,3,5-TRIMETHYLBENZENE NLE NLE 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 2.1 J 3.9 U 3.9 U 1,3-BUTADIENE U 1.8 U 1.8 U 1.8 U 1.8 U 1.8 U 1.8 U 1.8 U 1.8 U 1.8 U 1.8 U 1.8 U 1.8 U 1.8 U 1.8 U 1,3-DICHLOROBENZENE U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 1,4-DICHLOROBENZENE U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 4.8 U 1,4-DIOXANE NLE NLE 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2,2,4-TRIMETHYLPENTANE NLE NLE 3.7 U 2.1 J 2.1 J 3.7 U 2.5 J 3.7 U 2.9 J 2.6 J 3.7 U 3.7 U U 3.7 U 3.7 U 3.7 U 2-BUTANONE U J J J 8 2-CHLOROTOLUENE U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 2-HEXANONE NLE NLE 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 2.1 J 3-CHLOROPROPENE U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 4-ETHYLTOLUENE NLE NLE 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 3.9 U 4-METHYL-2-PENTANONE U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U ACETONE BENZENE U U U 1.9 J 2.6 U 2.6 U 2.6 U 2.6 U 2.6 U BENZYLCHLORIDE NLE NLE 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U 4.1 U BROMODICHLOROMETHANE U 5.4 U 5.4 U 5.4 U 5.4 U 5.4 U 5.4 U 5.4 U 5.4 U 5.4 U 5.4 U 5.4 U 5.4 U 5.4 U 5.4 U BROMOETHENE U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U BROMOFORM U 8.3 U 8.3 U 8.3 U 8.3 U 8.3 U 8.3 U 8.3 U 8.3 U 8.3 U 8.3 U 8.3 U 8.3 U 8.3 U 8.3 U BROMOMETHANE U 3.1 U 3.1 U 3.1 U 3.1 U 3.1 U 3.1 U 3.1 U 3.1 U 3.1 U 3.1 U 3.1 U 3.1 U 3.1 U 3.1 U CARBON DISULFIDE U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U 2.5 U CARBON TETRACHLORIDE U 5 U 5 U U U 5 U 21 5 U 5 U 3.5 J 35 5U 5U CHLOROBENZENE 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 U 3.7 U CHLOROETHANE 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 U 2.1 U CHLOROFORM U 3.9 U 3.9 U U U 3.9 U U U 3.9 U CHLOROMETHANE J.99 J 1.1 J 1.7 U 1.2 J 1.7 U 1.7 U 1 J 1.7 U 1.2 J 1.2 J.95 J 1.7 U 1.4 J 1.1 J CIS-1,2-DICHLOROETHENE U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U CIS-1,3-DICHLOROPROPENE NLE NLE 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U CYCLOHEXANE U 1.8 J 2.8 U 2.8 U 2.8 U 2.8 U 2 J 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U DIBROMOCHLOROMETHANE U 6.8 U 6.8 U 6.8 U 6.8 U 6.8 U 6.8 U 6.8 U 6.8 U 6.8 U 6.8 U 6.8 U 6.8 U 6.8 U 6.8 U DICHLORODIFLUOROMETHANE J 2.2 J 2.1 J 2.4 J 2 J 2.3 J 2.9 J 2.5 J 2.5 J 2.2 J 2.9 J 2.5 J 2.2 J J ETHANOL NLE NLE ETHYLACETATE NLE NLE 2.9 U U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U U 7.9 ETHYLBENZENE U 2 J 1.9 J 3.5 U 1.8 J 3.5 U 2.6 J 2.3 J 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U 3.5 U HEXACHLOROBUTADIENE U 8.5 U 8.5 U 8.5 U 8.5 U 8.5 U 8.5 U 8.5 U 8.5 U 8.5 U 8.5 U 8.5 U 8.5 U 8.5 U 8.5 U HEXANE J U U U J 2.5 J 2.5 J 2.8 U 2.8 U ISOPROPYL ALCOHOL NLE NLE U U U 2 U 2 U 1.2 J M,P-XYLENES NLE NLE 3 J U U U 3.5 U U U 2 J METHYLENE CHLORIDE U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U U 2.8 U METHYLMETHACRYLATE NLE NLE NA 3.3 U 3.3 U NA 3.3 U NA 3.3 U 3.3 U NA 3.3 U NA 3.3 U 3.3 U NA 3.3 U MTBE U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 2.9 U 29-SG-14 Sample JA /23/211 (ug/m 3 ) K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\SoilGasResults_91_211_9 June_24_211_JL 1 of 2

130 TABLE 5-1 SUBSLAB SOIL GAS ANALYTICAL RESULTS: FEBRUARY 211 EPA BUILDING 29: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey COMPOUND 1 Residential Generic Soil Gas Screening Levels 2,3 Location ID: Sample Type: Lab Sample ID: Date: Units: Nonresidential Generic Soil Gas Screening Levels 2,3 29-SG-1 29-SG-1 29-SG-1 29-SG-2 29-SG-2 29-SG-4 29-SG-4 29-SG-4 29-SG-6 29-SG-6 29-SG-9 29-SG-9 29-SG-9 29-SG-14 Sample Duplicate Sample Duplicate Sample Sample Duplicate Sample Sample Sample Sample Duplicate Sample Sample JA JA JA JA JA JA JA JA JA JA JA JA JA JA /24/21 2/23/211 2/23/211 9/24/21 2/23/211 9/24/21 2/23/211 2/23/211 9/24/21 2/23/211 1/8/21 2/23/211 2/23/211 9/24/21 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) N-HEPTANE NLE NLE 3.3 U 2.5 J 2.6 J 3.3 U U J 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U 3.3 U O-XYLENE NLE NLE 3.5 U 2.6 J 2.5 J 3.5 U 2.5 J 3.5 U 3.4 J 3.1 J 3.5 U 3.5 U 3.5 U 3.5 U 2.9 J 3.5 U 3.5 U PROPYLENE NLE NLE 3.4 U J 3.4 U 3.4 U 3.4 U U 1.5 J 3.4 U 1 J 1.4 J 1.6 J 3.4 U 1.1 J STYRENE U 3.4 U 3.4 U 3.4 U 3.4 U 3.4 U 3.4 U 3.4 U 3.4 U 3.4 U 3.4 U 3.4 U 3.4 U 3.4 U 3.4 U TERT-BUTYL ALCOHOL U 2.4 U 2.4 U 2.4 U 2.4 U 2.4 U 2.4 U 2.4 U 2.4 U 2.4 U 2.4 U 2.4 U U 2.4 U TETRACHLOROETHYLENE U U 1.1 U U 1.1 U 1.1 U U TETRAHYDROFURAN NLE NLE J 2.4 U 2.4 U 2.4 U 2.4 U 2.4 U 2.4 U 1.7 J 2.4 U 2.4 U 2.4 U 2.4 U 2.4 U 2.4 U TOLUENE U J U J 2.8 J TRANS-1,2-DICHLOROETHENE U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U 3.2 U TRANS-1,3-DICHLOROPROPENE NLE NLE 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U 3.6 U TRICHLOROETHYLENE U.86 U.86 U.86 U.86 U.86 U.86 U.86 U.86 U U.86 U U.86 U TRICHLOROFLUOROMETHANE J 4 J 3.8 J J J 2.8 J 3.1 J 4.5 U 2.8 J 4.5 U 2 J J VINYL ACETATE NLE NLE 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U 2.8 U VINYL CHLORIDE 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 U 2 U XYLENES (TOTAL) J U U U 3.5 U U U 2 J NOTES: AOC - Area of Concern ID - Identifier NLE - No Limit Established NJDEP - New Jersey Department of Environmental Protection J Estimated Value U - Not Detected Above Reporting Limit ug/m 3 - micrograms per cubic meter EPA - United States Environmental Protection Agency Exceedances of NJDEP Nonresidential Generic Indoor Air Screening Levels are indicated by highlighting Exceedances of NJDEP Residential Generic Indoor Air Screening Levels are indicated by bolding 29-SG-14 Sample JA /23/211 (ug/m 3 ) 1 The compound list for this table includes the compounds analyzed under the TO-15 analysis. 2 NJDEP Soil Gas Screening Levels as are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March Table 1 is the regulatory screening level used for comparison of the analytical results. K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\SoilGasResults_91_211_9 June_24_211_JL 2 of 2

131 TABLE 5-11 INDOOR AIR ANALYTICAL RESULTS: FEBRUARY 211 EPA BUILDING 29: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey COMPOUND 1 Table 2 NJDEP Rapid Action Level 3 Residential Generic Indoor Air Screening Levels 3,4 Nonresidential Generic Indoor Air Screening Levels 3,4 Location ID: Sample Type: Lab Sample ID: Date: Units: Table B-1 DOD Risk-Based Residential Air Concentrations Sample JA Duplicate JA Sample JA Sample JA Sample JA Sample JA Sample JA Sample JA Sample JA /24/21 2/23/211 2/23/211 9/24/21 2/23/211 9/24/21 2/23/211 9/24/21 2/23/211 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE NLE J 1.1 U.65 J.71 J 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1,1,2,2-TETRACHLOROETHANE NLE 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 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE NLE U 1.5 U.84 J 1.5 U 1.5 U 1.5 U 1.5 U 1.5 U.74 J 1,1,2-TRICHLOROETHANE NLE 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-DICHLOROETHANE NLE U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U 1,1-DICHLOROETHENE NLE U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U 1,2 - DIBROMOETHANE NLE 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 1,2,4-TRICHLOROBENZENE NLE 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 1,2,4-TRIMETHYLBENZENE NLE NLE NLE ,2-DICHLOROBENZENE NLE 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-DICHLOROETHANE NLE U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U 1,2-DICHLOROPROPANE NLE U.92 U.92 U.92 U.92 U.92 U.92 U.92 U.92 U 1,2-DICHLOROTETRAFLUOROETHANE NLE NLE 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 U 1,3,5-TRIMETHYLBENZENE NLE NLE NLE NLE.64 J.69 J J.93 J 1,3-BUTADIENE NLE U.44 U.44 U.44 U.44 U.44 U.44 U.44 U.44 U 1,3-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 U 1,4-DICHLOROBENZENE NLE U 1.2 U 1.2 U.66 J 1.2 U 1.2 U 1.2 U.59 J 1.2 U 1,4-DIOXANE NLE NLE NLE U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U 2,2,4-TRIMETHYLPENTANE NLE NLE NLE NLE BUTANONE NLE U.59 U U U U 2-CHLOROTOLUENE NLE 73 1 NLE 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 2-HEXANONE NLE NLE NLE U.82 U.82 U.82 U.82 U.82 U.82 U.82 U.82 U 3-CHLOROPROPENE NLE U.63 U.63 U.63 U.63 U.63 U.63 U.63 U.63 U 4-ETHYLTOLUENE NLE NLE NLE NLE.64 J.79 J J.93 J 4-METHYL-2-PENTANONE NLE U.82 U.82 U.82 U.82 U U.61 J.82 U ACETONE BENZENE BENZYLCHLORIDE NLE NLE NLE.5 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U BROMODICHLOROMETHANE NLE 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 BROMOETHENE NLE U.87 U.87 U.87 U.87 U.87 U.87 U.87 U.87 U BROMOFORM NLE 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 BROMOMETHANE NLE U.78 U.78 U.78 U.78 U.78 U.78 U.78 U.78 U CARBON DISULFIDE NLE U.62 U.62 U U.62 U.62 U.62 U.62 U CARBON TETRACHLORIDE J 1.3 U 1.3 U.63 J.62 J 1.3 U.62 J 1.3 U.62 J CHLOROBENZENE NLE U.92 U.92 U.92 U.92 U.92 U.92 U.92 U.92 U CHLOROETHANE NLE U.53 U.53 U.53 U.53 U.53 U.53 U.53 U.53 U CHLOROFORM U.98 U.98 U.98 U.98 U.98 U.98 U.98 U.98 U CHLOROMETHANE NLE CIS-1,2-DICHLOROETHENE NLE NLE.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U CIS-1,3-DICHLOROPROPENE NLE NLE NLE NLE.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U CYCLOHEXANE NLE J U.72 DIBROMOCHLOROMETHANE NLE 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 DICHLORODIFLUOROMETHANE NLE J ETHANOL NLE NLE NLE NLE E ETHYLACETATE NLE NLE NLE NLE U.72 U U U U ETHYLBENZENE HEXACHLOROBUTADIENE NLE 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 HEXANE NLE ISOPROPYL ALCOHOL NLE NLE NLE U K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\IndoorAirResults_91_211_4 June_24_211_JL 1 of 4

132 TABLE 5-11 INDOOR AIR ANALYTICAL RESULTS: FEBRUARY 211 EPA BUILDING 29: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Location ID: Sample Type: Sample Duplicate Sample Sample Sample Sample Sample Sample Sample Lab Sample ID: JA JA JA JA JA JA JA JA JA Date: 9/24/21 2/23/211 2/23/211 9/24/21 2/23/211 9/24/21 2/23/211 9/24/21 2/23/211 Units: (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Table B-1 DOD Risk-Based COMPOUND 1 Table 2 NJDEP Rapid Residential Generic Nonresidential Residential Air Action Level 3 Indoor Air Screening Generic Indoor Air Concentrations 2 Levels 3,4 Screening Levels 3,4 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) M,P-XYLENES NLE NLE NLE NLE METHYLENE CHLORIDE METHYLMETHACRYLATE NLE NLE NLE 73 NA.82 U.82 U NA.82 U NA.82 U NA.82 U MTBE U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U N-HEPTANE NLE NLE NLE NLE O-XYLENE NLE NLE NLE PROPYLENE NLE NLE NLE U.86 U U U.86 U.86 U.86 U STYRENE NLE U.85 U.85 U.85 U.85 U.85 U.85 U.85 U.85 U TERT-BUTYL ALCOHOL NLE NLE.61 U.61 U.61 U.61 U.61 U.61 U.61 U.61 U.61 U TETRACHLOROETHYLENE U TETRAHYDROFURAN NLE NLE NLE NLE.53 J.59 U.59 U U U U TOLUENE TRANS-1,2-DICHLOROETHENE NLE U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U TRANS-1,3-DICHLOROPROPENE NLE NLE NLE NLE.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U TRICHLOROETHYLENE U.21 U.13 J.21 J U.21 U.21 U.21 U TRICHLOROFLUOROMETHANE NLE VINYL ACETATE NLE NLE NLE 21.7 U.7 U.7 U.7 U.7 U.7 U.7 U.7 U.7 U VINYL CHLORIDE U.51 U.51 U.51 U.51 U.51 U.51 U.51 U.51 U XYLENES (TOTAL) NOTES: AOC - Area of Concern ID - Identifier NLE - No Limit Established NJDEP - New Jersey Department of Environmental Protection E - Value Exceeds Calibration Range J Estimated Value U - Not Detected Above Reporting Limit ug/m 3 - micrograms per cubic meter USACE - United States Army Corps of Engineers EPA - United States Environmental Protection Agency DOD Department of Defense Exceedances of NJDEP Nonresidential Generic Indoor Air Screening Levels are indicated by highlighting Exceedances of NJDEP Residential Generic Indoor Air Screening Levels are indicated by bolding 1 The compound list for this table includes the compounds analyzed under the TO-15 analysis. 2 Table B-1 USEPA Risk-Based Residential Air Concentrations as are provided in the DOD Vapor Intrusion Handbook document issued by the DOD January 29 and revised November NJDEP Indoor Air Screening Levels as are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March Table 1 is the regulatory screening level used for comparison of the analytical results. K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\IndoorAirResults_91_211_4 June_24_211_JL 2 of 4

133 TABLE 5-11 INDOOR AIR ANALYTICAL RESULTS: FEBRUARY 211 EPA BUILDING 29: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Location ID: Sample Type: Lab Sample ID: Date: Units: Table B-1 DOD Risk-Based COMPOUND 1 Table 2 NJDEP Rapid Residential Generic Nonresidential Residential Air Action Level 3 Indoor Air Screening Generic Indoor Air Concentrations 2 Levels 3,4 Screening Levels 3,4 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE NLE ,1,2,2-TETRACHLOROETHANE NLE ,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE NLE ,1,2-TRICHLOROETHANE NLE ,1-DICHLOROETHANE NLE ,1-DICHLOROETHENE NLE ,2 - DIBROMOETHANE NLE ,2,4-TRICHLOROBENZENE NLE ,2,4-TRIMETHYLBENZENE NLE NLE NLE 7.3 1,2-DICHLOROBENZENE NLE ,2-DICHLOROETHANE NLE ,2-DICHLOROPROPANE NLE ,2-DICHLOROTETRAFLUOROETHANE NLE NLE NLE NLE 1,3,5-TRIMETHYLBENZENE NLE NLE NLE NLE 1,3-BUTADIENE NLE ,3-DICHLOROBENZENE NLE NLE 1,4-DICHLOROBENZENE NLE ,4-DIOXANE NLE NLE NLE.32 2,2,4-TRIMETHYLPENTANE NLE NLE NLE NLE 2-BUTANONE NLE CHLOROTOLUENE NLE 73 1 NLE 2-HEXANONE NLE NLE NLE 31 3-CHLOROPROPENE NLE ETHYLTOLUENE NLE NLE NLE NLE 4-METHYL-2-PENTANONE NLE ACETONE BENZENE BENZYLCHLORIDE NLE NLE NLE.5 BROMODICHLOROMETHANE NLE BROMOETHENE NLE BROMOFORM NLE BROMOMETHANE NLE CARBON DISULFIDE NLE CARBON TETRACHLORIDE CHLOROBENZENE NLE CHLOROETHANE NLE CHLOROFORM CHLOROMETHANE NLE CIS-1,2-DICHLOROETHENE NLE NLE CIS-1,3-DICHLOROPROPENE NLE NLE NLE NLE CYCLOHEXANE NLE DIBROMOCHLOROMETHANE NLE DICHLORODIFLUOROMETHANE NLE ETHANOL NLE NLE NLE NLE ETHYLACETATE NLE NLE NLE NLE ETHYLBENZENE HEXACHLOROBUTADIENE NLE HEXANE NLE ISOPROPYL ALCOHOL NLE NLE NLE Duplicate JA /24/21 (ug/m 3 ) Sample Duplicate JA JA JA JA /24/21 2/23/211 2/23/211 9/24/21 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 29-BG Sample Sample Sample 29-BG JA JA JA /23/211 9/24/21 2/23/211 (ug/m 3 ) (ug/m 3 ) (ug/m 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 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U 1.4 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 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.79 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 U 1.5 U 1.5 U 1.5 U 1.79 J.98 U.98 U.98 U.98 U.59 J U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U 1.2 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.81 U.92 U.92 U.92 U.92 U.92 U.92 U.92 U.92 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.98 U.98 U.98 U.98 U.98 U.98 U.98 U.98 U.44 U.44 U.44 U.44 U.44 U.44 U.44 U.44 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.66 J 1.2 U 1.2 U 1.2 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.72 U.51 J.51 J.93 U.93 U.93 U.93 U.56 J U J U 1U 1U 1U 1U 1U 1U 1U 1U.82 U.82 U.82 U.82 U.82 U.82 U.82 U.82 U.63 U.63 U.63 U.63 U.63 U.63 U.63 U.63 U.98 U.98 U.98 U.98 U.98 U.98 U.98 U.98 U.45 J.82 U.82 U.82 U U.82 U.82 U J.51 J J.61 J U 1U 1U 1U 1U 1U 1U 1U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U 1.3 U.87 U.87 U.87 U.87 U.87 U.87 U.87 U.87 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.78 U.78 U.78 U.78 U.78 U.78 U.78 U.78 U.37 J.62 U.62 U.62 U U.62 U.62 U.59 J.6 J 1.3 U 1.3 U.56 J 1.3 U.59 J.69 J.92 U.92 U.92 U.92 U.92 U.92 U.92 U.92 U.53 U.53 U.53 U.53 U.53 U.53 U.53 U.53 U.68 J.73 J.98 U.98 U.98 U.98 U.98 U.98 U U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.69 U.69 U.69 U.69 U.69 U.69 U.69 U.69 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 U.72 U U U.69 J.65 J.87 U.87 U.87 U.87 U J 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U 2.1 U U J U K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\IndoorAirResults_91_211_4 June_24_211_JL 3 of 4

134 TABLE 5-11 INDOOR AIR ANALYTICAL RESULTS: FEBRUARY 211 EPA BUILDING 29: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Location ID: Sample Type: Lab Sample ID: Date: Units: Table B-1 DOD Risk-Based COMPOUND 1 Table 2 NJDEP Rapid Residential Generic Nonresidential Residential Air Action Level 3 Indoor Air Screening Generic Indoor Air Concentrations 2 Levels 3,4 Screening Levels 3,4 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) M,P-XYLENES NLE NLE NLE NLE METHYLENE CHLORIDE METHYLMETHACRYLATE NLE NLE NLE 73 MTBE N-HEPTANE NLE NLE NLE NLE O-XYLENE NLE NLE NLE 73 PROPYLENE NLE NLE NLE 31 STYRENE NLE TERT-BUTYL ALCOHOL NLE NLE TETRACHLOROETHYLENE TETRAHYDROFURAN NLE NLE NLE NLE TOLUENE TRANS-1,2-DICHLOROETHENE NLE TRANS-1,3-DICHLOROPROPENE NLE NLE NLE NLE TRICHLOROETHYLENE TRICHLOROFLUOROMETHANE NLE VINYL ACETATE NLE NLE NLE 21 VINYL CHLORIDE XYLENES (TOTAL) Duplicate JA /24/21 (ug/m 3 ) Sample Duplicate JA JA JA JA /24/21 2/23/211 2/23/211 9/24/21 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 29-BG Sample Sample Sample 29-BG JA JA JA /23/211 9/24/21 2/23/211 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) J.65 J 1.48 J U NA NA.82 U.82 U NA.82 U NA.82 U.54 J.58 J.72 U.72 U.72 U.72 U.72 U.72 U.7 J.66 J.82 U.82 U.82 U.82 U.82 U.82 U.61 J.52 J.87 U.87 U.87 U.87 U.78 J.65 J.86 U.86 U.86 U U.76 J.86 U U.85 U.85 U.85 U.85 U.85 U.85 U.85 U.61 U.61 U.61 U.61 U.61 U.61 U.61 U.61 U U.27 U U 2.27 U U.59 U.59 U.59 U.59 U.59 U U.79 U.79 U.79 U.79 U.79 U.79 U.79 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.91 U.21 U.21 U.21 U.21 U.21 U.21 U.21 U.21 U U.7 U.7 U.7 U.7 U.7 U.7 U.7 U.51 U.51 U.51 U.51 U.51 U.51 U.51 U.51 U J.65 J 1.48 J NOTES: AOC - Area of Concern ID - Identifier NLE - No Limit Established NJDEP - New Jersey Department of Environmental Protection E - Value Exceeds Calibration Range J Estimated Value U - Not Detected Above Reporting Limit ug/m 3 - micrograms per cubic meter USACE - United States Army Corps of Engineers EPA - United States Environmental Protection Agency DOD Department of Defense Exceedances of NJDEP Nonresidential Generic Indoor Air Screening Levels are indicated by highlighting Exceedances of NJDEP Residential Generic Indoor Air Screening Levels are indicated by bolding 1 The compound list for this table includes the compounds analyzed under the TO-15 analysis. 2 Table B-1 USEPA Risk-Based Residential Air Concentrations as are provided in the DOD Vapor Intrusion Handbook document issued by the DOD January 29 an 3 NJDEP Indoor Air Screening Levels as are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March Table 1 is the regulatory screening level used for comparison of the analytical results. K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\TABLES\IndoorAirResults_91_211_4 June_24_211_JL 4 of 4

135 FIGURES

136 29-SG-14 Parameter [Criteria] 2/1/6 1/12/7 4/12/7 8/29/7 11/14/7 6/11/8 9/26/8 3/1/9 9/21/9 3/2/1 9/24/1 2/23/11 TETRACHLOROETHYLENE [34] U U 14 U U.2 U U TRICHLOROETHYLENE [27] U 11 U 11 U U.21 U.86 U.86 U Parameter [Criteria] 1/3/6 1/11/7 4/11/7 8/27/7 11/14/7 6/11/8 9/26/8 3/1/9 9/17/9 3/1/1 9/24/1 2/23/11 TETRACHLOROETHYLENE [3] 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U J U TRICHLOROETHYLENE [3] 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U U.21 U.21 U.21 U.21 U.21 U DRAWING TITLE: PCE & TCE RESULTS FOR SUBSLAB SOIL GAS AND INDOOR AIR SAMPLES EPA BUILDING " = 1' 1/3/212 FIGURE: SCALE: DATE: 29-9 Parameter [Criteria] 1/3/6 1/11/7 4/11/7 8/27/7 11/14/7 6/11/8 9/25/8 3/1/9 9/17/9 3/1/1 9/24/1 9/24/1 2/23/11 2/23/11 TETRACHLOROETHYLENE [3] U 1.4 U 1.4 U 1.4 U.33 U J U.27 U TRICHLOROETHYLENE [3] 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U.22 U U.21 U.21 U.21 U.21 U.21 U.21 U?!( 29-BG-1 Parameter [Criteria] 9/24/1 2/23/11 TETRACHLOROETHYLENE [3] 2.27 U TRICHLOROETHYLENE [3].21 U.21 U CLIENT NAME: U.S. ARMY CORPS OF ENGINEERS NEW ENGLAND & NEW YORK DISTRICTS PROJECT NAME: INDOOR AIR QUALITY REPORT #7 FORMER RARITAN ARSENAL EDISON, NEW JERSEY 29-SG-9 Parameter [Criteria] 1/31/6 4/12/7 8/29/7 11/14/7 6/11/8 9/26/8 3/1/9 9/21/9 3/2/1 1/8/1 1/8/1 2/23/11 2/23/11 TETRACHLOROETHYLENE [34] U 14 U J U 1.1 U 5.2 J TRICHLOROETHYLENE [27] U 11 U J 1.13 J U.86 U 5.9 J 29-6 Parameter [Criteria] 1/3/6 1/11/7 4/11/7 8/27/7 11/14/7 6/11/8 9/26/8 3/1/9 9/17/9 3/1/1 9/24/1 2/23/11 TETRACHLOROETHYLENE [3] 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U J TRICHLOROETHYLENE [3] 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U U.21 U.21 U.21 U.21 U SG-1 29-SG-4 Parameter [Criteria] 2/1/6 1/12/7 4/12/7 6/11/8 9/26/8 3/1/9 9/21/9 3/2/1 9/24/1 2/23/11 2/23/11 TETRACHLOROETHYLENE [34] U U 1.1 U TRICHLOROETHYLENE [27] U J.21 U.21 U.86 U.86 U.86 U Parameter [Criteria] 1/31/6 1/12/7 4/12/7 8/29/7 11/14/7 6/11/8 9/26/8 3/1/9 9/21/9 3/2/1 9/24/1 2/23/11 2/23/11 TETRACHLOROETHYLENE [34] U U 14 U TRICHLOROETHYLENE [27] 11 U 11 U 11 U 11 U 11 U U.21 U.86 U.86 U.86 U 29-SG-2 29-SG-6 Parameter [Criteria] 4/12/7 8/29/7 11/14/7 6/11/8 9/26/8 3/1/9 9/21/9 3/2/1 9/24/1 2/23/11 TETRACHLOROETHYLENE [34] U 14 U J U TRICHLOROETHYLENE [27] 11 U 11 U 11 U U.27 J.21 U.86 U 1.3 Parameter [Criteria] 1/3/6 1/11/7 4/11/7 8/27/7 11/14/7 6/11/8 9/26/8 3/9/9 9/17/9 3/1/1 9/24/1 2/23/11 2/23/11 TETRACHLOROETHYLENE [3] 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U J TRICHLOROETHYLENE [3] 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U U.21 U.21 U.21 U.13 J.21 U Parameter [Criteria] 4/11/7 6/11/8 9/26/8 3/1/9 9/17/9 3/1/1 9/24/1 2/23/11 TETRACHLOROETHYLENE [3] 1.4 U J TRICHLOROETHYLENE [3] 1.1 U.22 U.22 U U.21 J.21 U.21 U Parameter [Criteria] 1/3/6 1/11/7 4/11/7 8/27/7 11/14/7 6/11/8 9/26/8 3/1/9 9/17/9 3/1/1 9/24/1 2/23/11 TETRACHLOROETHYLENE [3] 1.4 U 1.4 U 1.4 U 1.4 U 1.4 U J U TRICHLOROETHYLENE [3] 1.1 U 1.1 U 1.1 U 1.1 U 1.1 U U.21 U.21 J.45 Parameter [Criteria] 1/31/6 1/12/7 4/12/7 8/29/7 11/14/7 6/11/8 9/26/8 3/1/9 9/21/9 3/2/1 9/24/1 2/23/11 TETRACHLOROETHYLENE [34] U U 14 U D D U TRICHLOROETHYLENE [27] U 11 U 11 U 11 U U.21 U.86 U.86 U?!(!( h h Building 29?!(!(?!(?!(?!(!(!(!(!( 29-BG Parameter [Criteria] 6/11/8 3/1/9 9/17/9 3/1/1 TETRACHLOROETHYLENE [3] J 1.17 TRICHLOROETHYLENE [3] U.21 U Legend: h!(? 33 Notes: Ambient Air Sample Location Indoor Air Sample Location Subslab Soil Gas Sample Location Building Boundary Exceeds NJ VIG Criteria (2)(3) Soil Gas Sample Results Indoor Air Sample Results Ambient Air Sample Results 1. Building Area: 15,2 square feet. 2. Subslab Soil Gas and Indoor Air Results compared to Table 1 (Generic Vapor Intrusion Screening Levels) of the NJDEP VIG, March The most stringent (Residential) criteria was used to identify exceedances. NJDEP = New Jersey Department of Environmental Protection PCE = Tetrachloroethylene TCE = Trichloroethylene D = Diluted Result J = Estimated Value U = Undetected Result VIG = Vapor Intrusion Guidance REPORT DATE: PROJECT MANAGER: January 212 P. Bovitz CHECKED BY: D. Krumich DRAWING: 1662_EPA_29_IAQ.mxd PATH: K:/Raritan1/RaritanGIS/ Mxd/212_1_IAQ CONTRACT No. REVISION No. DELIVERY ORDER NO. DRAWN/MODIFIED BY: WORK ORDER No. Weston Solutions, Inc. J. Lynes 1/3/212 DATE CREATED: SM 25 Campus Drive Edison, New Jersey TEL: (732) Fax: (732) Graphic Scale In Feet RESULTS & CRITERIA ARE LISTED IN MICROGRAMS PER CUBIC METER (ug/m3)

137 SECTION 6. REFERENCES Agency for Toxic Substances and Disease Registry (ATSDR). Minimal Risk Levels (MRLs), Inhalation. January 23. Dames & Moore. Archival Search Report, Former Raritan Arsenal, Edison, New Jersey. July 1993 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 Journal of the Air and Waste Management Association 42: National Institute for Occupational Safety and Health (NIOSH). Pocket Guide to Chemical Hazards. Occupational Safety and Health Administration Permissible Exposure Limits (PELs). U.S. Department of Health and Human Services. February 24. New Jersey Department of Environmental Protection. Indoor Air VOC Sampling Analysis Requirements, Site Remediation Program. April 23. New Jersey Department of Environmental Protection, Site Remediation Program. Draft Guidance for Soil Gas Sampling. 24. New Jersey Department of Environmental Protection, Site Remediation Program. Draft Vapor Intrusion Guidance Document. October 25 with updates in March 26, May 26, and March 27. Shaw Environmental, Inc., Final Indoor Air Quality Semi-Annual Report #4. April 29. Shaw Environmental, Inc., Draft Final Indoor Air Quality Semi-Annual Report #5. July 21. Shaw Environmental, Inc., Draft Indoor Air Quality Semi-Annual Report #6. August 21. U.S. Army Corps of Engineers. Approach for Evaluating Potential Indoor Air Quality Impacts, Former Raritan Arsenal, Edison, NJ. 21 September 24. U.S. Environmental Protection Agency. Compendium of Methods for the Determination of Toxic Organic Compounds in Ambient Air: Method TO-15, Second Edition, Cincinnati, OH, EPA 625/R-96/1b. January U.S. Environmental Protection Agency, Office of Solid Waste and Emergency Response (OSWER). Draft Guidance for Evaluating the Vapor Intrusion to Indoor Air Pathway from Groundwater and Soils. November 22. U.S. Environmental Protection Agency Region III. EPA Region III Risk-Based Concentrations (RBC) Table. Updated 8 October 24. U.S. Environmental Protection Agency. Draft Vapor Investigation Binder, distributed at the 13 January 25 meeting. 6-1

138 U. S. Environmental Protection Agency. Trace Atmospheric Gas Analyzer (TAGA). March 26. Online. Internet. Weston Solutions, Inc. Final Site-Wide Hydrogeology Report, Former Raritan Arsenal Phase 2 Remedial Investigation. June Weston Solutions, Inc. Former Raritan Arsenal Phase II Supplemental Record Review/Site Investigation Report. December Weston Solutions, Inc. Draft Final Groundwater Natural Attenuation Report, Former Raritan Arsenal. July 22. Weston Solutions, Inc. Indoor Air Monitoring Work Plan for Building October 23. Weston Solutions, Inc. Draft Proposed Indoor Air, Sub-slab Soil Gas and Soil Sampling at Campus Plaza 1, 2, 3, 4, 5, 7, 8, Campus Drive and 2 Northfield Avenue, Former Raritan Arsenal. 4 October 24. Weston Solutions, Inc. Draft Proposed Indoor Air and Sub-slab Soil Gas Sampling, Buildings 1, 18, 2, 25, and the Guard Shack. 2 January 25. Weston Solutions. Draft Indoor Air Quality Evaluation (Steps One through Four), Former Raritan Arsenal. February 25. Weston Solutions, Inc. Groundwater AOC 8 EPA Building Investigation, for Soil, Groundwater and Sub-slab Soil Gas. June 25a. Weston Solutions, Inc. Final Supplemental Remedial Investigation Report Area 18C Ramp Area and Building 151/165. June 25b. Weston Solutions, Inc. Supplemental Groundwater Data Report. September 26. Weston Solutions, Inc. Indoor Air Quality Semi-Annual Report. November 25. Weston Solutions, Inc. Proposed Work Plan for Sub-slab Soil Gas, Indoor Air and Sub-slab Soil Sampling; Groundwater AOC 4A and 4B Sampling Work Plan. 23 January 26. Weston Solutions, Inc. Proposed Work Plan for Sub-slab Soil Gas, Indoor Air and Sub-slab Soil Sampling; Addendum to Groundwater AOC 6A, 6B and 6C Sampling Work Plan. 23 January 26. Weston Solutions, Inc. Indoor Air Quality Semi-Annual Report #2. September 26. Weston Solutions, Inc. Indoor Air Quality Semi-Annual Report #3. July

139 APPENDICES

140 Appendix A Leak Test Results

141 APPENDIX D1 - SUMMARY OF SUB SLAB LEAK-TEST RESULTS: APRIL 211 SAMPLING EVENT FORMER RARITAN ARSENAL - INDOOR AIR QUALITY REPORT # FERNWOOD - RARITAN CENTER EDISON, NEW JERSEY Location ID 12FERN-SG-1 12FERN-SG-2 12FERN-SG-3 12FERN-SG-4 12FERN-SG-5 CAS Number¹ Molecular Weight¹ TENANT Computershare Computershare Computershare Computershare Computershare Sampling Date 4/29/211 4/29/211 4/29/211 4/29/211 4/29/211 Units ppm ppm ppm ppm ppm Helium within 5 gallon bucket* Helium within sub-slab port*..... Tracer gas for leak test results should not exceed 1, parts per million as per NJDEP Vapor Intrusion Guidance October 25, Section Annular Seal and Tracer Gas, page 8 *Polyethylene tubing was connected to the sampling port and a 5 gallon bucket with two holes was placed over the sampling port. The tubing was attached to a Gilian pump. Compressed helium was added to the 5 gallon bucket. MGD-22 Multi-Gas Leak detector was used to measure the helium within the bucket. The pump was removed from the tubing and the leak detector was used to measure if helium leaked into the sampling port. ¹Information from the Material Safety Data Sheet for Helium, Compressed. Page 1 of 1

142 APPENDIX D2 - SUMMARY OF SUB SLAB LEAK-TEST RESULTS: FEBRUARY 211 SAMPLING EVENT FORMER RARITAN ARSENAL - INDOOR AIR QUALITY REPORT #7 165 FIELDCREST - RARITAN CENTER EDISON, NEW JERSEY Location ID 165-SG SG SG SG-4 CAS Number Molecular Weight TENANT Peppermint Tree Cembre Trueform Celsis Sampling Date 2/25/211 2/25/211 2/25/211 2/25/211 Units ppm ppm ppm ppm Helium within 5 gallon bucket* Helium within sub-slab port*.... Tracer gas for leak test results should not exceed 1, parts per million as per NJDEP Vapor Intrusion Guidance October 25, Section Annular Seal and Tracer Gas, page 8 *Polyethylene tubing was connected to the sampling port and a 5 gallon bucket with two holes was placed over the sampling port. The tubing was attached to a Gilian pump. Compressed helium was added to the 5 gallon bucket. MGD-22 Multi-Gas Leak detector was used to measure the helium within the bucket. The pump was removed from the tubing and the leak detector was used to measure if helium leaked into the sampling port. ¹Information from the Material Safety Data Sheet for Helium, Compressed.

143 APPENDIX D2 - SUMMARY OF SUB SLAB LEAK-TEST RESULTS: SEPTEMBER 21 SAMPLING EVENT FORMER RARITAN ARSENAL - INDOOR AIR QUALITY REPORT #7 165 FIELDCREST - RARITAN CENTER EDISON, NEW JERSEY Location ID 165-SG SG SG SG-4 CAS Number Molecular Weight TENANT Peppermint Tree Cembre Trueform Celsis Sampling Date 9/22/21 9/22/21 9/22/21 9/22/21 Units ppm ppm ppm ppm Helium within 5 gallon bucket* Helium within sub-slab port*.... Tracer gas for leak test results should not exceed 1, parts per million as per NJDEP Vapor Intrusion Guidance October 25, Section Annular Seal and Tracer Gas, page 8 *Polyethylene tubing was connected to the sampling port and a 5 gallon bucket with two holes was placed over the sampling port. The tubing was attached to a Gilian pump. Compressed helium was added to the 5 gallon bucket. MGD-22 Multi-Gas Leak detector was used to measure the helium within the bucket. The pump was removed from the tubing and the leak detector was used to measure if helium leaked into the sampling port. ¹Information from the Material Safety Data Sheet for Helium, Compressed. Page 1 of 3

144 APPENDIX D3 - SUMMARY OF SUB SLAB LEAK-TEST RESULTS: FEBRUARY 211 SAMPLING EVENT FORMER RARITAN ARSENAL - INDOOR AIR QUALITY REPORT #7 CAMPUS PLAZA 4 - RARITAN CENTER EDISON, NEW JERSEY Location ID CP4-SG-1 CP4-SG-2 CP4-SG-3 CP4-SG-4 CP4-SG-5 CAS Number Molecular Weight TENANT FBC Warehouse FBC Warehouse Bare Web Warehouse Fabrictex Warehouse Fabrictex Warehouse Sampling Date 2/25/211 2/25/211 2/25/211 2/25/211 2/25/211 Units ppm ppm ppm ppm ppm Helium within 5 gallon bucket* Helium within sub-slab port*..... Tracer gas for leak test results should not exceed 1, parts per million as per NJDEP Vapor Intrusion Guidance October 25, Section Annular Seal and Tracer Gas, page 8 *Polyethylene tubing was connected to the sampling port and a 5 gallon bucket with two holes was placed over the sampling port. The tubing was attached to a Gilian pump. Compressed helium was added to the 5 gallon bucket. MGD-22 Multi-Gas Leak detector was used to measure the helium within the bucket. The pump was removed from the tubing and the leak detector was used to measure if helium leaked into the sampling port. ¹Information from the Material Safety Data Sheet for Helium, Compressed.

145 APPENDIX D3 - SUMMARY OF SUB SLAB LEAK-TEST RESULTS: SEPTEMBER 21 SAMPLING EVENT FORMER RARITAN ARSENAL - INDOOR AIR QUALITY REPORT #7 CAMPUS PLAZA 4 - RARITAN CENTER EDISON, NEW JERSEY Location ID CP4-SG-1 CP4-SG-2 CP4-SG-3 CP4-SG-4 CP4-SG-5 CAS Number Molecular Weight TENANT FBC Warehouse FBC Warehouse Bare Web Warehouse Fabrictex Warehouse Agilysys Warehouse Sampling Date 9/22/211 9/22/211 9/22/211 9/22/211 9/22/211 Units ppm ppm ppm ppm ppm Helium within 5 gallon bucket* Helium within sub-slab port*..... Tracer gas for leak test results should not exceed 1, parts per million as per NJDEP Vapor Intrusion Guidance October 25, Section Annular Seal and Tracer Gas, page 8 *Polyethylene tubing was connected to the sampling port and a 5 gallon bucket with two holes was placed over the sampling port. The tubing was attached to a Gilian pump. Compressed helium was added to the 5 gallon bucket. MGD-22 Multi-Gas Leak detector was used to measure the helium within the bucket. The pump was removed from the tubing and the leak detector was used to measure if helium leaked into the sampling port. ¹Information from the Material Safety Data Sheet for Helium, Compressed. Page 1 of 1

146 APPENDIX D4 - SUMMARY OF SUB SLAB LEAK-TEST RESULTS: FEBRUARY 211 SAMPLING EVENT FORMER RARITAN ARSENAL - INDOOR AIR QUALITY REPORT #7 EPA BUILDING 1 - WOODBRIDGE AVE. EDISON, NEW JERSEY Location ID 1-SG-3 1-SG-4 CAS Number Molecular Weight TENANT USEPA USEPA Sampling Date 2/23/211 2/23/211 Units ppm ppm Helium within 5 gallon bucket* Helium within sub-slab port*.. Tracer gas for leak test results should not exceed 1, parts per million as per NJDEP Vapor Intrusion Guidance October 25, Section Annular Seal and Tracer Gas, page 8 *Polyethylene tubing was connected to the sampling port and a 5 gallon bucket with two holes was placed over the sampling port. The tubing was attached to a Gilian pump. Compressed helium was added to the 5 gallon bucket. MGD-22 Multi-Gas Leak detector was used to measure the helium within the bucket. The pump was removed from the tubing and the leak detector was used to measure if helium leaked into the sampling port. ¹Information from the Material Safety Data Sheet for Helium, Compressed.

147 APPENDIX D4 - SUMMARY OF SUB SLAB LEAK-TEST RESULTS: SEPTEMBER 21 SAMPLING EVENT FORMER RARITAN ARSENAL - INDOOR AIR QUALITY REPORT #7 EPA BUILDING 1 - WOODBRIDGE AVE. EDISON, NEW JERSEY Location ID 1-SG-3 1-SG-4 CAS Number Molecular Weight TENANT USEPA USEPA Sampling Date 9/24/211 9/24/211 Units ppm ppm Helium within 5 gallon bucket* Helium within sub-slab port*.. Tracer gas for leak test results should not exceed 1, parts per million as per NJDEP Vapor Intrusion Guidance October 25, Section Annular Seal and Tracer Gas, page 8 *Polyethylene tubing was connected to the sampling port and a 5 gallon bucket with two holes was placed over the sampling port. The tubing was attached to a Gilian pump. Compressed helium was added to the 5 gallon bucket. MGD-22 Multi-Gas Leak detector was used to measure the helium within the bucket. The pump was removed from the tubing and the leak detector was used to measure if helium leaked into the sampling port. ¹Information from the Material Safety Data Sheet for Helium, Compressed. Page 1 of 1

148 APPENDIX D5 - SUMMARY OF SUB SLAB LEAK-TEST RESULTS: FEBRUARY 211 SAMPLING EVENT FORMER RARITAN ARSENAL - INDOOR AIR QUALITY REPORT #7 EPA BUILDING 18 - WOODBRIDGE AVE. EDISON, NEW JERSEY Location ID 18-SG-4 18-SG-5 CAS Number Molecular Weight TENANT USEPA USEPA Sampling Date 2/23/211 2/23/211 Units ppm ppm Helium within 5 gallon bucket* Helium within sub-slab port*.. Tracer gas for leak test results should not exceed 1, parts per million as per NJDEP Vapor Intrusion Guidance October 25, Section Annular Seal and Tracer Gas, page 8 *Polyethylene tubing was connected to the sampling port and a 5 gallon bucket with two holes was placed over the sampling port. The tubing was attached to a Gilian pump. Compressed helium was added to the 5 gallon bucket. MGD-22 Multi-Gas Leak detector was used to measure the helium within the bucket. The pump was removed from the tubing and the leak detector was used to measure if helium leaked into the sampling port. ¹Information from the Material Safety Data Sheet for Helium, Compressed.

149 APPENDIX D5 - SUMMARY OF SUB SLAB LEAK-TEST RESULTS: SEPTEMBER 21 SAMPLING EVENT FORMER RARITAN ARSENAL - INDOOR AIR QUALITY REPORT #7 EPA BUILDING 18 - WOODBRIDGE AVE. EDISON, NEW JERSEY Location ID 18-SG-4 18-SG-5 CAS Number Molecular Weight TENANT USEPA USEPA Sampling Date 9/24/211 9/24/211 Units ppm ppm Helium within 5 gallon bucket* Helium within sub-slab port*.. Tracer gas for leak test results should not exceed 1, parts per million as per NJDEP Vapor Intrusion Guidance October 25, Section Annular Seal and Tracer Gas, page 8 *Polyethylene tubing was connected to the sampling port and a 5 gallon bucket with two holes was placed over the sampling port. The tubing was attached to a Gilian pump. Compressed helium was added to the 5 gallon bucket. MGD-22 Multi-Gas Leak detector was used to measure the helium within the bucket. The pump was removed from the tubing and the leak detector was used to measure if helium leaked into the sampling port. ¹Information from the Material Safety Data Sheet for Helium, Compressed. Page 1 of 1

150 APPENDIX D6 - SUMMARY OF SUB SLAB LEAK-TEST RESULTS: FEBRUARY 211 SAMPLING EVENT FORMER RARITAN ARSENAL - INDOOR AIR QUALITY REPORT #7 EPA BUILDING 2 - WOODBRIDGE AVE. EDISON, NEW JERSEY Location ID 2-SG-2 CAS Number Molecular Weight TENANT USEPA Sampling Date 2/23/211 Units ppm Helium within 5 gallon bucket* Helium within sub-slab port*. Tracer gas for leak test results should not exceed 1, parts per million as per NJDEP Vapor Intrusion Guidance October 25, Section Annular Seal and Tracer Gas, page 8 *Polyethylene tubing was connected to the sampling port and a 5 gallon bucket with two holes was placed over the sampling port. The tubing was attached to a Gilian pump. Compressed helium was added to the 5 gallon bucket. MGD-22 Multi- Gas Leak detector was used to measure the helium within the bucket. The pump was removed from the tubing and the leak detector was used to measure if helium leaked into the sampling port. ¹Information from the Material Safety Data Sheet for Helium, Compressed.

151 APPENDIX D6 - SUMMARY OF SUB SLAB LEAK-TEST RESULTS: SEPTEMBER 21 SAMPLING EVENT FORMER RARITAN ARSENAL - INDOOR AIR QUALITY REPORT #7 EPA BUILDING 2 - WOODBRIDGE AVE. EDISON, NEW JERSEY Location ID 2-SG-2 CAS Number Molecular Weight TENANT USEPA Sampling Date 9/24/211 Units ppm Helium within 5 gallon bucket* Helium within sub-slab port*. Tracer gas for leak test results should not exceed 1, parts per million as per NJDEP Vapor Intrusion Guidance October 25, Section Annular Seal and Tracer Gas, page 8 *Polyethylene tubing was connected to the sampling port and a 5 gallon bucket with two holes was placed over the sampling port. The tubing was attached to a Gilian pump. Compressed helium was added to the 5 gallon bucket. MGD-22 Multi-Gas Leak detector was used to measure the helium within the bucket. The pump was removed from the tubing and the leak detector was used to measure if helium leaked into the sampling port. ¹Information from the Material Safety Data Sheet for Helium, Compressed. Page 1 of 1

152 APPENDIX D7 - SUMMARY OF SUB SLAB LEAK-TEST RESULTS: FEBRUARY 211 SAMPLING EVENT FORMER RARITAN ARSENAL - INDOOR AIR QUALITY REPORT #7 EPA BUILDING 25 - WOODBRIDGE AVE. EDISON, NEW JERSEY Location ID 25-SG-1 25-SG SG SG SG-19 CAS Number Molecular Weight TENANT USEPA USEPA USEPA USEPA USEPA Sampling Date 2/23/211 2/23/211 2/23/211 2/23/211 2/23/211 Units ppm ppm ppm ppm ppm Helium within 5 gallon bucket* Helium within sub-slab port*..... Tracer gas for leak test results should not exceed 1, parts per million as per NJDEP Vapor Intrusion Guidance October 25, Section Annular Seal and Tracer Gas, page 8 *Polyethylene tubing was connected to the sampling port and a 5 gallon bucket with two holes was placed over the sampling port. The tubing was attached to a Gilian pump. Compressed helium was added to the 5 gallon bucket. MGD-22 Multi-Gas Leak detector was used to measure the helium within the bucket. The pump was removed from the tubing and the leak detector was used to measure if helium leaked into the sampling port. ¹Information from the Material Safety Data Sheet for Helium, Compressed.

153 APPENDIX D7 - SUMMARY OF SUB SLAB LEAK-TEST RESULTS: SEPTEMBER 21 SAMPLING EVENT FORMER RARITAN ARSENAL - INDOOR AIR QUALITY REPORT #7 EPA BUILDING 25 - WOODBRIDGE AVE. EDISON, NEW JERSEY Location ID 25-SG-1 25-SG SG SG SG-19 CAS Number Molecular Weight TENANT USEPA USEPA USEPA USEPA USEPA Sampling Date 9/24/21 9/24/21 9/24/21 9/24/21 9/24/21 Units ppm ppm ppm ppm ppm Helium within 5 gallon bucket* Helium within sub-slab port*..... Tracer gas for leak test results should not exceed 1, parts per million as per NJDEP Vapor Intrusion Guidance October 25, Section Annular Seal and Tracer Gas, page 8 *Polyethylene tubing was connected to the sampling port and a 5 gallon bucket with two holes was placed over the sampling port. The tubing was attached to a Gilian pump. Compressed helium was added to the 5 gallon bucket. MGD-22 Multi-Gas Leak detector was used to measure the helium within the bucket. The pump was removed from the tubing and the leak detector was used to measure if helium leaked into the sampling port. ¹Information from the Material Safety Data Sheet for Helium, Compressed. Page 1 of 1

154 APPENDIX D8 - SUMMARY OF SUB SLAB LEAK-TEST RESULTS: FEBRUARY 211 SAMPLING EVENT FORMER RARITAN ARSENAL - INDOOR AIR QUALITY REPORT #7 EPA BUILDING 29 - WOODBRIDGE AVE. EDISON, NEW JERSEY Location ID 29-SG-1 29-SG-2 29-SG-4 29-SG-6 29-SG-9 29-SG-14 CAS Number Molecular Weight TENANT USEPA USEPA USEPA USEPA USEPA USEPA Sampling Date 2/23/211 2/23/211 2/23/211 2/23/211 2/23/211 2/23/211 Units ppm ppm ppm ppm ppm ppm Helium within 5 gallon bucket* Helium within sub-slab port* Tracer gas for leak test results should not exceed 1, parts per million as per NJDEP Vapor Intrusion Guidance October 25, Section Annular Seal and Tracer Gas, page 8 *Polyethylene tubing was connected to the sampling port and a 5 gallon bucket with two holes was placed over the sampling port. The tubing was attached to a Gilian pump. Compressed helium was added to the 5 gallon bucket. MGD- 22 Multi-Gas Leak detector was used to measure the helium within the bucket. The pump was removed from the tubing and the leak detector was used to measure if helium leaked into the sampling port. ¹Information from the Material Safety Data Sheet for Helium, Compressed.

155 APPENDIX D8 - SUMMARY OF SUB SLAB LEAK-TEST RESULTS: SEPTEMBER 21 SAMPLING EVENT FORMER RARITAN ARSENAL - INDOOR AIR QUALITY REPORT #7 EPA BUILDING 29 - WOODBRIDGE AVE. EDISON, NEW JERSEY Location ID 29-SG-1 29-SG-2 29-SG-4 29-SG-6 29-SG-9 29-SG-14 CAS Number Molecular Weight TENANT USEPA USEPA USEPA USEPA USEPA USEPA Sampling Date 9/24/21 9/24/21 9/24/21 9/24/21 9/24/21 9/24/21 Units ppm ppm ppm ppm ppm ppm Helium within 5 gallon bucket* Helium within sub-slab port* Tracer gas for leak test results should not exceed 1, parts per million as per NJDEP Vapor Intrusion Guidance October 25, Section Annular Seal and Tracer Gas, page 8 *Polyethylene tubing was connected to the sampling port and a 5 gallon bucket with two holes was placed over the sampling port. The tubing was attached to a Gilian pump. Compressed helium was added to the 5 gallon bucket. MGD-22 Multi-Gas Leak detector was used to measure the helium within the bucket. The pump was removed from the tubing and the leak detector was used to measure if helium leaked into the sampling port. ¹Information from the Material Safety Data Sheet for Helium, Compressed. Page 1 of 1

156 Appendix B Meteorological Data

157 LCD Daily Form 1 of 1 6/28/211 7:31 PM QUALITY CONTROLLED LOCAL CLIMATOLOGICAL DATA (final) NOAA, National Climatic Data Center Month: 9/21 Station Location: NEWARK LIBERTY INTERNATIONAL AP (14734) NEWARK, NJ Lat Lon Elevation(Ground): 7 ft. above sea level Temperature Degree Days Snow/Ice on Precipitation Wind: Speed=mph Sun Pressure(inches of Hg) D (Fahrenheit) Base 65 Degrees Ground(In) (In) Dir=tens of degrees D a max max a Dep Avg Significant Weather Avg. t Avg. Sunrise Sunset UTC UTC LST LST Avg. Resultant Res Avg. 5-second 2-minute t Max. Min. Avg. From Wet Heating Cooling Sea e Dew pt. LST LST Water Snow Water Station Speed Dir Speed e Normal Bulb Depth Level Speed Dir Speed Dir Equiv Fall Equiv * * M M M M M M M M M M M T.... T * * RA BR TS TSRA HZ RA BR TSRA RA BR TS TSRA RA BR HZ DZ RA DZ BR RA BR RA DZ BR HZ M M M M M M M M M M M M M M M M M M M T <-----Monthly Averages Totals-----> M <Monthly Average < Departure From Normal > -.43 Degree Days Monthly Season to Date Total Departure Total Departure Heating: Cooling: Greatest 24-hr Precipitation: 1.21 Date: 3 Greatest 24-hr Snowfall:. Date: M Greatest Snow Depth: Date: M Max Temp >=9: 6 Days with > Max Temp <=32: Thunderstorms : 5 Sea Level Pressure Date Time (LST) Maximum Minimum Min Temp <=32: Min Temp <= : Heavy Fog : Precipitation >=.1 inch: 8 Precipitation >=.1 inch: Snowfall >=1. inch : * EXTREME FOR THE MONTH - LAST OCCURRENCE IF MORE THAN ONE. Data Version: VER3

158 LCD Daily Form 1 of 1 6/28/211 7:3 PM QUALITY CONTROLLED LOCAL CLIMATOLOGICAL DATA (final) NOAA, National Climatic Data Center Month: 1/21 Station Location: NEWARK LIBERTY INTERNATIONAL AP (14734) NEWARK, NJ Lat Lon Elevation(Ground): 7 ft. above sea level Temperature Degree Days Snow/Ice on Precipitation Wind: Speed=mph Sun Pressure(inches of Hg) D (Fahrenheit) Base 65 Degrees Ground(In) (In) Dir=tens of degrees D a max max a Dep Avg Significant Weather Avg. t Avg. Sunrise Sunset UTC UTC LST LST Avg. Resultant Res Avg. 5-second 2-minute t Max. Min. Avg. From Wet Heating Cooling Sea e Dew pt. LST LST Water Snow Water Station Speed Dir Speed e Normal Bulb Depth Level Speed Dir Speed Dir Equiv Fall Equiv * * * * RA DZ BR RA RA BR RA DZ RA TSRA RA RA RA BR RA BR RA RA BR RA RA RA BR FG+ BR HZ M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M T T T...9. T. T T. T <-----Monthly Averages Totals-----> M <Monthly Average < Departure From Normal >.68 Degree Days Monthly Season to Date Total Departure Total Departure Heating: Cooling: Greatest 24-hr Precipitation: 2.36 Date: 1 Greatest 24-hr Snowfall:. Date: M Greatest Snow Depth: Date: M Max Temp >=9: Days with > Max Temp <=32: Thunderstorms : 1 Sea Level Pressure Date Time (LST) Maximum Minimum Min Temp <=32: Min Temp <= : Heavy Fog : 1 Precipitation >=.1 inch: 1 Precipitation >=.1 inch: Snowfall >=1. inch : * EXTREME FOR THE MONTH - LAST OCCURRENCE IF MORE THAN ONE. Data Version: VER3

159 LCD Daily Form 1 of 1 6/28/211 7:29 PM QUALITY CONTROLLED LOCAL CLIMATOLOGICAL DATA (final) NOAA, National Climatic Data Center Month: 2/211 Station Location: NEWARK LIBERTY INTERNATIONAL AP (14734) NEWARK, NJ Lat Lon Elevation(Ground): 7 ft. above sea level Temperature Degree Days Snow/Ice on Precipitation Wind: Speed=mph Sun Pressure(inches of Hg) D (Fahrenheit) Base 65 Degrees Ground(In) (In) Dir=tens of degrees D a max max a Dep Avg Significant Weather Avg. t Avg. Sunrise Sunset UTC UTC LST LST Avg. Resultant Res Avg. 5-second 2-minute t Max. Min. Avg. From Wet Heating Cooling Sea e Dew pt. LST LST Water Snow Water Station Speed Dir Speed e Normal Bulb Depth Level Speed Dir Speed Dir Equiv Fall Equiv * * * * FZRA FZDZ SN BR RA DZ FZRA BR SN RA FZRA BR RA BR HZ RA SN BR RA SN BR RA BR RA BR RA DZ BR M M M M M M M M M M M M M M M M M M M M M M M M M M M M.6.8 T. T.. T... T T T T T. T... T T <-----Monthly Averages Totals-----> M <Monthly Average < Departure From Normal >.53 Degree Days Monthly Season to Date Total Departure Total Departure Heating: Cooling: Greatest 24-hr Precipitation: 1.43 Date: Greatest 24-hr Snowfall: 2.7 Date: 21 Greatest Snow Depth: 15 Date: 2+ Max Temp >=9: Days with > Max Temp <=32: 3 Thunderstorms : Sea Level Pressure Date Time (LST) Maximum Minimum Min Temp <=32: 21 Min Temp <= : Heavy Fog : Precipitation >=.1 inch: 9 Precipitation >=.1 inch: Snowfall >=1. inch : 1 * EXTREME FOR THE MONTH - LAST OCCURRENCE IF MORE THAN ONE. Data Version: VER3

160 LCD Daily Form 1 of 1 6/28/211 7:28 PM QUALITY CONTROLLED LOCAL CLIMATOLOGICAL DATA (final) NOAA, National Climatic Data Center Month: 4/211 Station Location: NEWARK LIBERTY INTERNATIONAL AP (14734) NEWARK, NJ Lat Lon Elevation(Ground): 7 ft. above sea level Temperature Degree Days Snow/Ice on Precipitation Wind: Speed=mph Sun Pressure(inches of Hg) D (Fahrenheit) Base 65 Degrees Ground(In) (In) Dir=tens of degrees D a max max a Dep Avg Significant Weather Avg. t Avg. Sunrise Sunset UTC UTC LST LST Avg. Resultant Res Avg. 5-second 2-minute t Max. Min. Avg. From Wet Heating Cooling Sea e Dew pt. LST LST Water Snow Water Station Speed Dir Speed e Normal Bulb Depth Level Speed Dir Speed Dir Equiv Fall Equiv * * * * RA BR RA RA DZ RA RA RA BR BR HZ RA BR HZ TSRA RA RA DZ BR HZ TSRA RA BR RA RA DZ BR HZ RA RA BR TSRA RA BR RA DZ FG+ BR HZ BR HZ RA TSRA RA BR RA M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M T T.2 T. T T. T.33 T <-----Monthly Averages Totals-----> M Ts 5.86s <Monthly Average < Departure From Normal > 1.94 Degree Days Monthly Season to Date Total Departure Total Departure Heating: Cooling: Greatest 24-hr Precipitation: 2.52s Date: Greatest 24-hr Snowfall: Ts Date: 1 Greatest Snow Depth: M Date: M Max Temp >=9: Days with > Max Temp <=32: s Thunderstorms : 4 Sea Level Pressure Date Time (LST) Maximum Minimum Min Temp <=32: Min Temp <= : Heavy Fog : 1 Precipitation >=.1 inch: 16 Precipitation >=.1 inch: Snowfall >=1. inch : * EXTREME FOR THE MONTH - LAST OCCURRENCE IF MORE THAN ONE. Data Version: VER3

161 Appendix C AOC2 Historic Results Summary

162 APPENDIX TABLE C-1 SUMMARY OF SUBSLAB SOIL GAS RESULTS FOR 165 FIELDCREST AVENUE: GROUNDWATER AOC 2 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 2 and in IA and/or for Building 165 Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 Min. Max. Min. Max. (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 )(ug/m 3 ) (ug/m 3 )(ug/m 3 ) (ug/m 3 )(ug/m 3 ) (ug/m 3 )(ug/m 3 ) (ug/m 3 )(ug/m 3 ) (ug/m 3 )(ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 )(ug/m 3 ) 1,1,1-TRICHLOROETHANE No ,1,2-TRICHLOROETHANE ND 5 No ,1-DICHLOROETHANE No ,2-DICHLOROETHANE No ACETONE ND 19 No BENZENE ND 15 Yes CARBON DISULFIDE ND 71 No CHLOROFORM 15 7 Yes ETHYLBENZENE ND 61 No METHYLENE CHLORIDE ND 53 No M,P-XYLENES 29 7 No NA MTBE No O-XYLENE 29 7 No TETRACHLOROETHYLENE 11 1 Yes TOLUENE 7 31 No TRICHLOROETHYLENE Yes VINYL CHLORIDE 2 1 Yes XYLENES (TOTAL) 29 7 No NA NA NA NA NA Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 2, but for and/or Detected in IA and/or for Building 165 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Compounds Not Detected or For In Groundwater COPC 5 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 Samples Samples February 211 Sample Event 18 February 211 Sample Event 18 Min. Max. Samples Samples September 21 Sample Event 17 Min. Max. Samples Samples February 21 Sample Event 16 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 )(ug/m 3 ) (ug/m 3 )(ug/m 3 ) (ug/m 3 )(ug/m 3 ) (ug/m 3 )(ug/m 3 ) (ug/m 3 )(ug/m 3 ) (ug/m 3 )(ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 )(ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE * 24 No ,2,4-TRICHLOROBENZENE ND 28 No ,2,4-TRIMETHYLBENZENE ND NLE No NLE NLE ,2-DICHLOROBENZENE ND 59 No ,2-DICHLOROTETRAFLUOROETHANE * NLE No NLE NLE ,3,5-TRIMETHYLBENZENE ND NLE No NLE NLE ,4-DICHLOROBENZENE ND 75 No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE BUTANONE ND 27 No CHLOROTOLUENE ND 12 No ETHYLTOLUENE * NLE No NLE NLE METHYL-2-PENTANONE ND 88 No BROMODICHLOROMETHANE ND 5.69 No BROMOFORM ND 37 No CARBON TETRACHLORIDE ND 1 No CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No CHLOROMETHANE ND 24 No CYCLOHEXANE * 12 No DICHLORODIFLUOROMETHANE ND 9 No HEXACHLOROBUTADIENE ND 1 No HEXANE * NLE No N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 No Min. Min. Max. Max. Samples Samples September 29 Sample Event 15 Min. Min. Max. Max. Samples September 21 February 21 September 29 March 29 Sample Event 17 Sample Event 16 Sample Event 15 Sample Event 14 Samples March 29 Sample Event 14 Min. Min. Max. Max. Samples Samples September 28 Sample Event 13 September 28 Sample Event 13 Min. Min. Max. Max. Samples Samples May 28 Sample Event 12 Min. May 28 Sample Event 12 Min. Max. Max. Samples Samples August 28 Sample Event 11 Min. August 28 Sample Event 11 Min. Max. Max. NOTES: AOC - Area of Concern Max. - Maximum - Subslab Soil Gas - Concentration Min. - Minimum ug/l - micrograms per liter COPC - Constituent of Potential Concern NA - Not Available ug/m 3 - micrograms per cubic meters IA - Indoor Air ND - Not Detected * - Not IAQ - Indoor Air Quality NJDEP - New Jersey Department of Environmental Protection 1 If a sample event is not listed, subslab soil gas samples were not collected for that event 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detected in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 2. 3 Groundwater concentrations taken from the Groundwater AOC 2 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for six of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethene and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\C - AOC 2 Historic Results Summary\Table C-1 to C Summary 1 of 2

163 APPENDIX TABLE C-1 SUMMARY OF SUBSLAB SOIL GAS RESULTS FOR 165 FIELDCREST AVENUE: GROUNDWATER AOC 2 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 2 and in IA and/or for Building 165 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ,1,2-TRICHLOROETHANE ND 5 No ,1-DICHLOROETHANE No ,2-DICHLOROETHANE No 2 2 ACETONE ND 19 No BENZENE ND 15 Yes CARBON DISULFIDE ND 71 No CHLOROFORM 15 7 Yes ETHYLBENZENE ND 61 No METHYLENE CHLORIDE ND 53 No M,P-XYLENES 29 7 No MTBE No O-XYLENE 29 7 No TETRACHLOROETHYLENE 11 1 Yes TOLUENE 7 31 No TRICHLOROETHYLENE Yes VINYL CHLORIDE 2 1 Yes XYLENES (TOTAL) 29 7 No Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 2, but for and/or Detected in IA and/or for Building 165 Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Compounds Not Detected or For In Groundwater COPC 5 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE * 24 No ,2,4-TRICHLOROBENZENE ND 28 No ,2,4-TRIMETHYLBENZENE ND NLE No NLE NLE 1,2-DICHLOROBENZENE ND 59 No ,2-DICHLOROTETRAFLUOROETHANE * NLE No NLE NLE 1,3,5-TRIMETHYLBENZENE ND NLE No NLE NLE 1,4-DICHLOROBENZENE ND 75 No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE 2-BUTANONE ND 27 No CHLOROTOLUENE ND 12 No ETHYLTOLUENE * NLE No NLE NLE 4-METHYL-2-PENTANONE ND 88 No BROMODICHLOROMETHANE ND 5.69 No BROMOFORM ND 37 No 18 8 CARBON TETRACHLORIDE ND 1 No CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No CHLOROMETHANE ND 24 No CYCLOHEXANE * 12 No DICHLORODIFLUOROMETHANE ND 9 No HEXACHLOROBUTADIENE ND 1 No HEXANE * NLE No N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 No Samples Min. Max. Min. Max. Min. Max. (ug/m 3 )(ug/m 3 ) (ug/m 3 )(ug/m 3 ) (ug/m 3 )(ug/m 3 ) (ug/m 3 )(ug/m 3 ) (ug/m 3 )(ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NA NA NA NA NA NA Samples January 27 Sample Event 1 January 27 Sample Event 1 Min. Max. Samples Samples July 26 Sample Event 9 July 26 Sample Event 9 Min. Max. Samples Samples January 26 Sample Event 8 January 26 Sample Event 8 Min. Max. Samples Samples July 25 Sample Event 7 (ug/m 3 )(ug/m 3 ) (ug/m 3 )(ug/m 3 ) (ug/m 3 )(ug/m 3 ) (ug/m 3 )(ug/m 3 ) (ug/m 3 )(ug/m 3 ) (ug/m 3 ) (ug/m 3 ) July 25 Sample Event 7 Min. Min. Max. Max. Samples Samples January 25 Sample Event 6 January 25 Sample Event 6 Min. Min. Max. Max. Samples Samples June 23 Sample Event 1 Min. June 23 Sample Event 1 Min. Max. Max. NOTES: AOC - Area of Concern Max. - Maximum - Subslab Soil Gas - Concentration Min. - Minimum ug/l - micrograms per liter COPC - Constituent of Potential Concern NA - Not Available ug/m 3 - micrograms per cubic meters IA - Indoor Air ND - Not Detected * - Not IAQ - Indoor Air Quality NJDEP - New Jersey Department of Environmental Protection 1 If a sample event is not listed, subslab soil gas samples were not collected for that event 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detected in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 2. 3 Groundwater concentrations taken from the Groundwater AOC 2 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for six of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethene and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\C - AOC 2 Historic Results Summary\Table C-1 to C Summary 2 of 2

164 APPENDIX TABLE C-2 SUMMARY OF VAPOR RECOVEY SYSTEM RESULTS FOR FIELDCREST AVENUE: GROUNDWATER AOC 2 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 2 and in VR for Building 165 Most Recent Groundwater Concentration at Historical Groundwater Screening Levels 4 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Min. VR Max. VR Maxium 3 Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ,1,2-TRICHLOROETHANE ND 5 No ,1-DICHLOROETHANE No ,2-DICHLOROETHANE No ACETONE ND 19 No BENZENE ND 15 Yes CARBON DISULFIDE ND 71 No CHLOROFORM 15 7 Yes ETHYLBENZENE ND 61 No METHYLENE CHLORIDE ND 53 No MTBE No M,P-XYLENES 29 7 No NLE NLE O-XYLENE 29 7 No NLE NLE TETRACHLOROETHYLENE 11 1 Yes TOLUENE 7 31 No TRICHLOROETHYLENE Yes VINYL CHLORIDE 2 1 Yes XYLENES (TOTAL) 29 7 No NA NA NA NA Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 2 and in VR for Building 165 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Groundwater Screening Levels 4 COPC 5 Compounds Not Detected or For In Groundwater COPC 5 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening VR Samples VR Samples February 21 Sample Event 18 Min. VR Max. VR VR Samples Maxium 3 Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE * 24 No ,2,4-TRICHLOROBENZENE ND 28 No ,2,4-TRIMETHYLBENZENE ND NLE No NLE NLE ,2-DICHLOROBENZENE ND 59 No ,2-DICHLOROTETRAFLUOROETHANE * NLE No NLE NLE ,3,5-TRIMETHYLBENZENE ND NLE No NLE NLE ,4-DICHLOROBENZENE ND 75 No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE BUTANONE ND 27 No CHLOROTOLUENE ND 12 No ETHYLTOLUENE * NLE No NLE NLE METHYL-2-PENTANONE ND 88 No BROMODICHLOROMETHANE ND 5.69 No BROMOFORM ND 37 No CARBON TETRACHLORIDE ND 1 No CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No CHLOROMETHANE ND 24 No CYCLOHEXANE * 12 No DICHLORODIFLUOROMETHANE ND 9 No HEXACHLOROBUTADIENE ND 1 No HEXANE * NLE No N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 No Min. VR Min. VR Max. VR February 21 September 21 February 29 Sample Event 18 Sample Event 17 Sample Event 16 VR Samples September 21 Sample Event 17 Max. VR VR Samples VR Samples February 29 Sample Event 16 Min. VR Min. VR Max. VR Max. VR VR Samples VR Samples September 29 March 29 September 29 Sample Event 15 Sample Event 14 Sample Event 13 Min. VR Min. VR Max. VR Max. VR VR Samples VR Samples Min. VR Min. VR Max. VR September 29 March 29 September 29 Sample Event 15 Sample Event 14 Sample Event 13 Max. VR VR Samples VR Samples Min. VR Min. VR Max. VR Max. VR NOTES: AOC - Area of Concern Max. - Maximum - Subslab Soil Gas - Concentration Min. - Minimum ug/l - micrograms per liter COPC - Constituent of Potential Concern NA - Not Available ug/m 3 - micrograms per cubic meters IA - Indoor Air ND - Not Detected * - Not IAQ - Indoor Air Quality NJDEP - New Jersey Department of Environmental Protection 1 If a sample event is not listed, vapro recovery samples were not collected for that event. 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detected in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 2. 3 Groundwater concentrations taken from the Groundwater AOC 2 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for six of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethen and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\C - AOC 2 Historic Results Summary\Table C-1 to C Summary 1 of 3

165 APPENDIX TABLE C-2 SUMMARY OF VAPOR RECOVEY SYSTEM RESULTS FOR FIELDCREST AVENUE: GROUNDWATER AOC 2 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 2 and in VR for Building 165 Most Recent Groundwater Concentration at Historical Groundwater Screening Levels 4 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 Maxium 3 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ,1,2-TRICHLOROETHANE ND 5 No ,1-DICHLOROETHANE No ,2-DICHLOROETHANE No 2 2 ACETONE ND 19 No BENZENE ND 15 Yes CARBON DISULFIDE ND 71 No CHLOROFORM 15 7 Yes ETHYLBENZENE ND 61 No METHYLENE CHLORIDE ND 53 No MTBE No M,P-XYLENES 29 7 No NLE NLE O-XYLENE 29 7 No NLE NLE TETRACHLOROETHYLENE 11 1 Yes TOLUENE 7 31 No TRICHLOROETHYLENE Yes VINYL CHLORIDE 2 1 Yes XYLENES (TOTAL) 29 7 No Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 2 and in VR for Building 165 Compounds Detected In Groundwater Compounds Not Detected or For In Groundwater Most Recent Groundwater Concentration at Historical Groundwater Screening Levels 4 COPC 5 COPC 5 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 Maxium 3 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE * 24 No ,2,4-TRICHLOROBENZENE ND 28 No ,2,4-TRIMETHYLBENZENE ND NLE No NLE NLE 1,2-DICHLOROBENZENE ND 59 No ,2-DICHLOROTETRAFLUOROETHANE * NLE No NLE NLE 1,3,5-TRIMETHYLBENZENE ND NLE No NLE NLE 1,4-DICHLOROBENZENE ND 75 No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE 2-BUTANONE ND 27 No CHLOROTOLUENE ND 12 No ETHYLTOLUENE * NLE No NLE NLE 4-METHYL-2-PENTANONE ND 88 No BROMODICHLOROMETHANE ND 5.69 No BROMOFORM ND 37 No 18 8 CARBON TETRACHLORIDE ND 1 No CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No CHLOROMETHANE ND 24 No CYCLOHEXANE * 12 No DICHLORODIFLUOROMETHANE ND 9 No HEXACHLOROBUTADIENE ND 1 No HEXANE * NLE No N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 No VR Samples Min. VR Max. VR Min. VR Max. VR Min. VR Max. VR (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NA NA NA NA NA NA VR Samples May 28 August 27 January 27 July 26 January 26 July 25 Sample Event 12 Sample Event 11 Sample Event 1 Sample Event 9 Sample Event 8 Sample Event 7 Min. VR Max. VR VR Samples VR Samples Min. VR Max. VR VR Samples VR Samples Min. VR Max. VR VR Samples May 28 August 27 January 27 July 26 January 26 July 25 Sample Event 12 Sample Event 11 Sample Event 1 Sample Event 9 Sample Event 8 Sample Event 7 VR Samples (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Min. VR Min. VR Max. VR Max. VR VR Samples VR Samples Min. VR Min. VR Max. VR Max. VR VR Samples VR Samples Min. VR Min. VR Max. VR Max. VR NOTES: AOC - Area of Concern Max. - Maximum - Subslab Soil Gas - Concentration Min. - Minimum ug/l - micrograms per liter COPC - Constituent of Potential Concern NA - Not Available ug/m 3 - micrograms per cubic meters IA - Indoor Air ND - Not Detected * - Not IAQ - Indoor Air Quality NJDEP - New Jersey Department of Environmental Protection 1 If a sample event is not listed, vapro recovery samples were not collected for that event. 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detected in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 2. 3 Groundwater concentrations taken from the Groundwater AOC 2 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for six of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethen and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\C - AOC 2 Historic Results Summary\Table C-1 to C Summary 2 of 3

166 APPENDIX TABLE C-2 SUMMARY OF VAPOR RECOVEY SYSTEM RESULTS FOR FIELDCREST AVENUE: GROUNDWATER AOC 2 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 2 and in VR for Building 165 Most Recent Groundwater Concentration at Historical Groundwater Screening Levels 4 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 Maxium 3 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ,1,2-TRICHLOROETHANE ND 5 No ,1-DICHLOROETHANE No ,2-DICHLOROETHANE No 2 2 ACETONE ND 19 No BENZENE ND 15 Yes CARBON DISULFIDE ND 71 No CHLOROFORM 15 7 Yes ETHYLBENZENE ND 61 No METHYLENE CHLORIDE ND 53 No MTBE No M,P-XYLENES 29 7 No NLE NLE O-XYLENE 29 7 No NLE NLE TETRACHLOROETHYLENE 11 1 Yes TOLUENE 7 31 No TRICHLOROETHYLENE Yes VINYL CHLORIDE 2 1 Yes XYLENES (TOTAL) 29 7 No Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 2 and in VR for Building 165 Compounds Detected In Groundwater Compounds Not Detected or For In Groundwater Most Recent Groundwater Concentration at Historical Groundwater Screening Levels 4 COPC 5 COPC 5 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 Maxium 3 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE * 24 No ,2,4-TRICHLOROBENZENE ND 28 No ,2,4-TRIMETHYLBENZENE ND NLE No NLE NLE 1,2-DICHLOROBENZENE ND 59 No ,2-DICHLOROTETRAFLUOROETHANE * NLE No NLE NLE 1,3,5-TRIMETHYLBENZENE ND NLE No NLE NLE 1,4-DICHLOROBENZENE ND 75 No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE 2-BUTANONE ND 27 No CHLOROTOLUENE ND 12 No ETHYLTOLUENE * NLE No NLE NLE 4-METHYL-2-PENTANONE ND 88 No BROMODICHLOROMETHANE ND 5.69 No BROMOFORM ND 37 No 18 8 CARBON TETRACHLORIDE ND 1 No CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No CHLOROMETHANE ND 24 No CYCLOHEXANE * 12 No DICHLORODIFLUOROMETHANE ND 9 No HEXACHLOROBUTADIENE ND 1 No HEXANE * NLE No N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 No VR Samples Min. VR Max. VR Min. VR Max. VR (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NA NA NA NA NA VR Samples January 25 Sample Event 6 January 25 Sample Event 6 Min. VR Max. VR VR Samples VR Samples July 24 Sample Event 5 July 24 Sample Event 5 Min. VR Max. VR VR Samples VR Samples April 24 Sample Event 4 April 24 Sample Event 4 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Min. VR Min. VR Max. VR Max. VR VR Samples VR Samples January 24 Sample Event 3 January 24 Sample Event 3 Min. VR Min. VR Max. VR Max. VR VR Samples VR Samples October 23 Sample Event 2 Min. VR October 23 Sample Event 2 Min. VR Max. VR Max. VR NOTES: AOC - Area of Concern Max. - Maximum - Subslab Soil Gas - Concentration Min. - Minimum ug/l - micrograms per liter COPC - Constituent of Potential Concern NA - Not Available ug/m 3 - micrograms per cubic meters IA - Indoor Air ND - Not Detected * - Not IAQ - Indoor Air Quality NJDEP - New Jersey Department of Environmental Protection 1 If a sample event is not listed, vapro recovery samples were not collected for that event. 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detected in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 2. 3 Groundwater concentrations taken from the Groundwater AOC 2 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for six of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethen and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\C - AOC 2 Historic Results Summary\Table C-1 to C Summary 3 of 3

167 APPENDIX TABLE C-3 SUMMARY OF INDOOR AIR RESULTS FOR 165 FIELDCREST AVENUE: GROUNDWATER AOC 2 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 2 and in IA and/or for Building 165 Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 Min. IA Max. IA Results (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ,1,2-TRICHLOROETHANE ND 5 No ,1-DICHLOROETHANE No ,2-DICHLOROETHANE No ACETONE ND 19 No BENZENE ND 15 Yes CARBON DISULFIDE ND 71 No CHLOROFORM 15 7 Yes ETHYLBENZENE ND 61 No METHYLENE CHLORIDE No M,P-XYLENES ND 53 No MTBE 29 7 No O-XYLENE 29 7 No TETRACHLOROETHYLENE 11 1 Yes TOLUENE 7 31 No TRICHLOROETHYLENE Yes VINYL CHLORIDE 2 1 Yes XYLENES (TOTAL) 29 7 No NA NA NA Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 2 and in IA and/or for Building 165 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Compounds Not Detected or For In Groundwater COPC 5 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 February 211 Sample Event 18 Min. IA Max. IA Results (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE * 24 No ,2,4-TRICHLOROBENZENE ND 28 No ,2,4-TRIMETHYLBENZENE ND NLE No NLE NLE ,2-DICHLOROBENZENE ND 59 No ,2-DICHLOROTETRAFLUOROETHANE * NLE No NLE NLE ,3,5-TRIMETHYLBENZENE ND NLE No NLE NLE ,4-DICHLOROBENZENE ND 75 No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE BUTANONE ND 27 No CHLOROTOLUENE ND 12 No ETHYLTOLUENE * NLE No NLE NLE METHYL-2-PENTANONE ND 88 No BROMODICHLOROMETHANE ND 5.69 No BROMOFORM ND 37 No CARBON TETRACHLORIDE ND 1 No CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No CHLOROMETHANE ND 24 No CYCLOHEXANE * 12 No DICHLORODIFLUOROMETHANE ND 9 No HEXACHLOROBUTADIENE ND 1 No HEXANE * NLE No N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 No September 21 Sample Event 17 Min. IA February 211 September 21 Sample Event 18 Sample Event 17 Min. IA Max. IA Max. IA Results Results February 21 September 29 March 29 Sample Event 16 Sample Event 15 Sample Event 14 Min. IA February 21 Sample Event 16 Min. IA Max. IA Max. IA Results Results Min. IA September 29 Sample Event 15 Min. IA Max. IA Max. IA Results Results Min. IA March 29 Sample Event 14 Min. IA Max. IA Max. IA Results Results NOTES: AOC - Area of Concern Max. - Maximum - Subslab Soil Gas - Concentration Min. - Minimum ug/l - micrograms per liter COPC - Constituent of Potential Concern NA - Not Available ug/m 3 - micrograms per cubic meters IA - Indoor Air ND - Not Detected * - Not IAQ - Indoor Air Quality NJDEP - New Jersey Department of Environmental Protection 1 If a sample event is not listed, indoor air samples were not collected for that event. 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detecte in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 2. 3 Groundwater concentrations taken from the Groundwater AOC 2 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for six of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethen and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\C - AOC 2 Historic Results Summary\Table C-1 to C Summary 1 of 3

168 APPENDIX TABLE C-3 SUMMARY OF INDOOR AIR RESULTS FOR 165 FIELDCREST AVENUE: GROUNDWATER AOC 2 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 2 and in IA and/or for Building 165 Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ,1,2-TRICHLOROETHANE ND 5 No 3 3 1,1-DICHLOROETHANE No ,2-DICHLOROETHANE No 2 2 ACETONE ND 19 No BENZENE ND 15 Yes 2 2 CARBON DISULFIDE ND 71 No 1 73 CHLOROFORM 15 7 Yes 2 2 ETHYLBENZENE ND 61 No METHYLENE CHLORIDE No 9 4 M,P-XYLENES ND 53 No MTBE 29 7 No 4 2 O-XYLENE 29 7 No TETRACHLOROETHYLENE 11 1 Yes 3 3 TOLUENE 7 31 No TRICHLOROETHYLENE Yes 3 3 VINYL CHLORIDE 2 1 Yes 1 1 XYLENES (TOTAL) 29 7 No Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 2 and in IA and/or for Building 165 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Compounds Not Detected or For In Groundwater COPC 5 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE * 24 No ,2,4-TRICHLOROBENZENE ND 28 No ,2,4-TRIMETHYLBENZENE ND NLE No NLE NLE 1,2-DICHLOROBENZENE ND 59 No ,2-DICHLOROTETRAFLUOROETHANE * NLE No NLE NLE 1,3,5-TRIMETHYLBENZENE ND NLE No NLE NLE 1,4-DICHLOROBENZENE ND 75 No 3 3 2,2,4-TRIMETHYLPENTANE * NLE No NLE NLE 2-BUTANONE ND 27 No CHLOROTOLUENE ND 12 No ETHYLTOLUENE * NLE No NLE NLE 4-METHYL-2-PENTANONE ND 88 No BROMODICHLOROMETHANE ND 5.69 No 3 3 BROMOFORM ND 37 No 5 5 CARBON TETRACHLORIDE ND 1 No 3 3 CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No 5 2 CHLOROMETHANE ND 24 No CYCLOHEXANE * 12 No DICHLORODIFLUOROMETHANE ND 9 No HEXACHLOROBUTADIENE ND 1 No 5 5 HEXANE * NLE No 1 73 N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No 15 1 TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 No 1 73 Min. IA Max. IA Results Min. IA Max. IA Results Min. IA (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NA NA NA NA NA - - NA September 28 May 28 August 27 January 27 July 26 Sample Event 13 Sample Event 12 Sample Event 11 Sample Event 1 Sample Event 9 September 28 Sample Event 13 Min. IA Max. IA Results May 28 Sample Event 12 Min. IA Max. IA Results Min. IA (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Max. IA Max. IA Results Results Min. IA Min. IA Max. IA Max. IA Results Results Min. IA August 27 January 27 July 26 Sample Event 11 Sample Event 1 Sample Event 9 Min. IA Max. IA Max. IA Results Results NOTES: AOC - Area of Concern Max. - Maximum - Subslab Soil Gas - Concentration Min. - Minimum ug/l - micrograms per liter COPC - Constituent of Potential Concern NA - Not Available ug/m 3 - micrograms per cubic meters IA - Indoor Air ND - Not Detected * - Not IAQ - Indoor Air Quality NJDEP - New Jersey Department of Environmental Protection 1 If a sample event is not listed, indoor air samples were not collected for that event. 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detecte in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 2. 3 Groundwater concentrations taken from the Groundwater AOC 2 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for six of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethen and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\C - AOC 2 Historic Results Summary\Table C-1 to C Summary 2 of 3

169 APPENDIX TABLE C-3 SUMMARY OF INDOOR AIR RESULTS FOR 165 FIELDCREST AVENUE: GROUNDWATER AOC 2 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 2 and in IA and/or for Building 165 Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ,1,2-TRICHLOROETHANE ND 5 No 3 3 1,1-DICHLOROETHANE No ,2-DICHLOROETHANE No 2 2 ACETONE ND 19 No BENZENE ND 15 Yes 2 2 CARBON DISULFIDE ND 71 No 1 73 CHLOROFORM 15 7 Yes 2 2 ETHYLBENZENE ND 61 No METHYLENE CHLORIDE No 9 4 M,P-XYLENES ND 53 No MTBE 29 7 No 4 2 O-XYLENE 29 7 No TETRACHLOROETHYLENE 11 1 Yes 3 3 TOLUENE 7 31 No TRICHLOROETHYLENE Yes 3 3 VINYL CHLORIDE 2 1 Yes 1 1 XYLENES (TOTAL) 29 7 No Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 2 and in IA and/or for Building 165 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Compounds Not Detected or For In Groundwater COPC 5 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE * 24 No ,2,4-TRICHLOROBENZENE ND 28 No ,2,4-TRIMETHYLBENZENE ND NLE No NLE NLE 1,2-DICHLOROBENZENE ND 59 No ,2-DICHLOROTETRAFLUOROETHANE * NLE No NLE NLE 1,3,5-TRIMETHYLBENZENE ND NLE No NLE NLE 1,4-DICHLOROBENZENE ND 75 No 3 3 2,2,4-TRIMETHYLPENTANE * NLE No NLE NLE 2-BUTANONE ND 27 No CHLOROTOLUENE ND 12 No ETHYLTOLUENE * NLE No NLE NLE 4-METHYL-2-PENTANONE ND 88 No BROMODICHLOROMETHANE ND 5.69 No 3 3 BROMOFORM ND 37 No 5 5 CARBON TETRACHLORIDE ND 1 No 3 3 CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No 5 2 CHLOROMETHANE ND 24 No CYCLOHEXANE * 12 No DICHLORODIFLUOROMETHANE ND 9 No HEXACHLOROBUTADIENE ND 1 No 5 5 HEXANE * NLE No 1 73 N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No 15 1 TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 No 1 73 Min. IA Max. IA Results Min. IA Max. IA Results Min. IA (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NA NA NA NA NA January 26 July 25 January 25 July 24 April 24 Sample Event 8 Sample Event 7 Sample Event 6 Sample Event 5 Sample Event 4 January 26 Sample Event 8 Min. IA Max. IA Results July 25 Sample Event 7 Min. IA Max. IA Results January 25 Sample Event 6 Min. IA (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Max. IA Max. IA Results Results Min. IA July 24 Sample Event 5 Min. IA Max. IA Max. IA Results Results Min. IA April 24 Sample Event 4 Min. IA Max. IA Max. IA Results Results NOTES: AOC - Area of Concern Max. - Maximum - Subslab Soil Gas - Concentration Min. - Minimum ug/l - micrograms per liter COPC - Constituent of Potential Concern NA - Not Available ug/m 3 - micrograms per cubic meters IA - Indoor Air ND - Not Detected * - Not IAQ - Indoor Air Quality NJDEP - New Jersey Department of Environmental Protection 1 If a sample event is not listed, indoor air samples were not collected for that event. 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detecte in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 2. 3 Groundwater concentrations taken from the Groundwater AOC 2 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for six of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethen and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\C - AOC 2 Historic Results Summary\Table C-1 to C Summary 3 of 3

170 APPENDIX TABLE C-4 SUMMARY OF SUBSLAB SOIL GAS RESULTS FOR CAMPUS PLAZA 4: GROUNDWATER AOC 2 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 2 and in IA and/or for Campus Plaza 4 Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 Min. Max. Min. Max. Min. (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ,2-DICHLOROETHANE No ACETONE ND 19 No BENZENE ND 15 Yes CARBON DISULFIDE ND 71 No CHLOROFORM 15 7 Yes CIS-1,2-DICHLOROETHENE Yes ETHYLBENZENE ND 61 No M,P-XYLENES ND 53 No NA METHYLENE CHLORIDE No MTBE 29 7 No O-XYLENE 29 7 No TETRACHLOROETHYLENE 11 1 Yes TOLUENE 7 31 No TRANS-1,2-DICHLOROETHENE ND 3 No TRICHLOROETHYLENE Yes XYLENES (TOTAL) 29 7 No NA NA NA NA NA Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 2, but for and/or Detected in IA and/or for Campus Plaza 4 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Compounds Not Detected or For In Groundwater COPC 5 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 Samples February 211 Sample Event 14 Samples February 211 Sample Event 14 Min. Max. Samples Samples September 21 Sample Event 13 September 21 Sample Event 13 Min. Max. Samples Samples February 21 Sample Event 12 February 21 Sample Event 12 Min. (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE * 24 No ,2,4-TRICHLOROBENZENE ND 28 No ,2,4-TRIMETHYLBENZENE ND NLE No NLE NLE ,3,5-TRIMETHYLBENZENE ND NLE No NLE NLE ,4-DICHLOROBENZENE ND 75 No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE BUTANONE ND 27 No CHLOROTOLUENE ND 12 No ETHYLTOLUENE * NLE No NLE NLE METHYL-2-PENTANONE ND 88 No CARBON TETRACHLORIDE ND 1 No CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No CHLOROMETHANE ND 24 No CYCLOHEXANE * 12 No DICHLORODIFLUOROMETHANE ND 9 No HEXACHLOROBUTADIENE ND 1 No HEXANE * NLE No N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 No Max. Max. Samples Samples September 29 Sample Event 11 Min. September 29 Sample Event 11 Min. Max. Max. Samples Samples March 29 Sample Event 1 Min. March 29 Sample Event 1 Min. Max. Max. Samples Samples September 29 Sample Event 9 Min. September 29 Sample Event 9 Min. Max. Max. Samples Samples May 28 Sample Event 8 Min. May 28 Sample Event 8 Min. Max. Max. Samples Samples November 27 Sample Event 7 Min. November 27 Sample Event 7 Min. Max. Max. NOTES: AOC - Area of Concern Max. - Maximum - Subslab Soil Gas - Concentration Min. - Minimum ug/l - micrograms per liter COPC - Constituent of Potential Concern NA - Not Available ug/m 3 - micrograms per cubic meters IA - Indoor Air ND - Not Detected * - Not IAQ - Indoor Air Quality NJDEP - New Jersey Environmental Protection Department of 1 If a sample event is not listed, subslab soil gas samples were not collected for that eve 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detec in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 2. 3 Groundwater concentrations taken from the Groundwater AOC 2 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for five of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroeth and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\C - AOC 2 Historic Results Summary\Table C-4 and C-5 CP4 Summary 1 of 2

171 APPENDIX TABLE C-4 SUMMARY OF SUBSLAB SOIL GAS RESULTS FOR CAMPUS PLAZA 4: GROUNDWATER AOC 2 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 2 and in IA and/or for Campus Plaza 4 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ,2-DICHLOROETHANE No 2 2 ACETONE ND 19 No BENZENE ND 15 Yes CARBON DISULFIDE ND 71 No CHLOROFORM 15 7 Yes CIS-1,2-DICHLOROETHENE Yes ETHYLBENZENE ND 61 No M,P-XYLENES ND 53 No METHYLENE CHLORIDE No MTBE 29 7 No O-XYLENE 29 7 No TETRACHLOROETHYLENE 11 1 Yes TOLUENE 7 31 No TRANS-1,2-DICHLOROETHENE ND 3 No TRICHLOROETHYLENE Yes XYLENES (TOTAL) 29 7 No Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 2, but for and/or Detected in IA and/or for Campus Plaza 4 Compounds Not Detected or For In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 COPC 5 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE * 24 No ,2,4-TRICHLOROBENZENE ND 28 No ,2,4-TRIMETHYLBENZENE ND NLE No NLE NLE 1,3,5-TRIMETHYLBENZENE ND NLE No NLE NLE 1,4-DICHLOROBENZENE ND 75 No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE 2-BUTANONE ND 27 No CHLOROTOLUENE ND 12 No ETHYLTOLUENE * NLE No NLE NLE 4-METHYL-2-PENTANONE ND 88 No CARBON TETRACHLORIDE ND 1 No CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No CHLOROMETHANE ND 24 No CYCLOHEXANE * 12 No DICHLORODIFLUOROMETHANE ND 9 No HEXACHLOROBUTADIENE ND 1 No HEXANE * NLE No N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 No August 27 Sample Event 6 Samples Min. Max. Min. Max. Min. Max. (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NA NA NA NA NA NA August 27 Sample Event 6 Samples Min. Max. Samples Samples March 27 Sample Event 5 March 27 Sample Event 5 Min. Max. Samples Samples January 27 Sample Event 4 January 27 Sample Event 4 Min. Max. Samples Samples September 26 Sample Event 3 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Min. September 26 Sample Event 3 Min. Max. Max. Samples Samples January 26 Sample Event 2 Min. January 26 Sample Event 2 Min. Max. Max. Samples Samples October 24 Sample Event 1 Min. October 24 Sample Event 1 Min. Max. Max. NOTES: AOC - Area of Concern Max. - Maximum - Subslab Soil Gas - Concentration Min. - Minimum ug/l - micrograms per liter COPC - Constituent of Potential Concern NA - Not Available ug/m 3 - micrograms per cubic meters IA - Indoor Air ND - Not Detected * - Not IAQ - Indoor Air Quality NJDEP - New Jersey Environmental Protection Department of 1 If a sample event is not listed, subslab soil gas samples were not collected for that eve 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detec in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 2. 3 Groundwater concentrations taken from the Groundwater AOC 2 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for five of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroeth and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\C - AOC 2 Historic Results Summary\Table C-4 and C-5 CP4 Summary 2 of 2

172 APPENDIX TABLE C-5 SUMMARY OF INDOOR AIR RESULTS FOR CAMPUS PLAZA 4: GROUNDWATER AOC 2 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 1 : Compounds Detected in Groundwater for Groundwater AOC 2 and in IA and/or for Campus Plaza 4 Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 Min. IA Max. IA Results (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No 1,4 1, ,2-DICHLOROETHANE No ACETONE ND 19 No 4,6 3, BENZENE ND 15 Yes CARBON DISULFIDE ND 71 No 1, CHLOROFORM 15 7 Yes Cis-1,2-DICHLOROETHENE Yes ETHYLBENZENE ND 61 No 1,5 1, M,P-XYLENES ND 53 No METHYLENE CHLORIDE No MTBE 29 7 No O-XYLENE No TETRACHLOROETHYLENE 11 1 Yes TOLUENE 7 31 No 7,2 5, TRANS-1,2-DICHLOROETHENE ND 3 No TRICHLOROETHYLENE Yes XYLENES (TOTAL) 29 7 No NA NA NA Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 2, but for and/or Detected in IA and/or for Campus Plaza 4 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Compounds Not Detected or For In Groundwater COPC 5 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 February 211 Sample Event 14 February 211 Sample Event 14 Min. IA Max. IA Results September-October 21 Sample Event 13 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE * 24 No 44, 31, ,2,4-TRICHLOROBENZENE ND 28 No ,2,4-TRIMETHYLBENZENE ND NLE No NLE NLE ,3,5-TRIMETHYLBENZENE ND NLE No NLE NLE ,4-DICHLOROBENZENE ND 75 No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE BUTANONE ND 27 No 7,2 5, CHLOROPROPENE ND 12 No 2 2 NA NA NA NA NA ETHYLTOLUENE * NLE No NLE NLE METHYL-2-PENTANONE ND 88 No 4,4 3, CARBON TETRACHLORIDE ND 1 No CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No CHLOROMETHANE ND 24 No CYCLOHEXANE * 12 No 8,7 6, DICHLORODIFLUOROMETHANE ND 9 No HEXACHLOROBUTADIENE ND 1 No HEXANE * NLE No 1, N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No 1,5 1, TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 No 1, Min. IA Min. IA Max. IA September-October 21 Sample Event 13 Max. IA Results Results February 21 Sample Event 12 Min. IA February 21 Sample Event 12 Min. IA Max. IA Max. IA Results Results September 29 Sample Event 11 Min. IA September 29 Sample Event 11 Min. IA Max. IA Max. IA Results Results March 29 Sample Event 1 Min. IA March 29 Sample Event 1 Min. IA Max. IA Max. IA Results Results NOTES: AOC - Area of Concern Max. - Maximum - Subslab Soil Gas - Concentration Min. - Minimum ug/l - micrograms per liter COPC - Constituent of Potential Concern NA - Not Available ug/m 3 - micrograms per cubic meters IA - Indoor Air ND - Not Detected * - Not IAQ - Indoor Air Quality NJDEP - New Jersey Department of Environmental Protection 1 If a sample event is not listed, indoor air samples were not collected for that event. 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detecte in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 2. 3 Groundwater concentrations taken from the Groundwater AOC 2 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for five of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethen and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\C - AOC 2 Historic Results Summary\Table C-4 and C-5 CP4 Summary 1 of 3

173 APPENDIX TABLE C-5 SUMMARY OF INDOOR AIR RESULTS FOR CAMPUS PLAZA 4: GROUNDWATER AOC 2 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 1 : Compounds Detected in Groundwater for Groundwater AOC 2 and in IA and/or for Campus Plaza 4 Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No 1,4 1, 1,2-DICHLOROETHANE No 2 2 ACETONE ND 19 No 4,6 3,3 BENZENE ND 15 Yes 2 2 CARBON DISULFIDE ND 71 No 1, 73 CHLOROFORM 15 7 Yes 2 2 Cis-1,2-DICHLOROETHENE Yes ETHYLBENZENE ND 61 No 1,5 1,1 M,P-XYLENES ND 53 No METHYLENE CHLORIDE No 9 4 MTBE 29 7 No 4 2 O-XYLENE No TETRACHLOROETHYLENE 11 1 Yes 3 3 TOLUENE 7 31 No 7,2 5,1 TRANS-1,2-DICHLOROETHENE ND 3 No TRICHLOROETHYLENE Yes 3 3 XYLENES (TOTAL) 29 7 No Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 2, but for and/or Detected in IA and/or for Campus Plaza 4 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Compounds Not Detected or For In Groundwater COPC 5 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE * 24 No 44, 31, 1,2,4-TRICHLOROBENZENE ND 28 No ,2,4-TRIMETHYLBENZENE ND NLE No NLE NLE 1,3,5-TRIMETHYLBENZENE ND NLE No NLE NLE 1,4-DICHLOROBENZENE ND 75 No 3 3 2,2,4-TRIMETHYLPENTANE * NLE No NLE NLE 2-BUTANONE ND 27 No 7,2 5,1 3-CHLOROPROPENE ND 12 No ETHYLTOLUENE * NLE No NLE NLE 4-METHYL-2-PENTANONE ND 88 No 4,4 3,1 CARBON TETRACHLORIDE ND 1 No 3 3 CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No 5 2 CHLOROMETHANE ND 24 No CYCLOHEXANE * 12 No 8,7 6,2 DICHLORODIFLUOROMETHANE ND 9 No HEXACHLOROBUTADIENE ND 1 No 5 5 HEXANE * NLE No 1, 73 N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No 1,5 1, TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 No 1, 73 Min. IA Max. IA Results Min. IA Max. IA Results Min. IA (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NA NA NA NA NA September 28 Sample Event 9 September 28 Sample Event 9 Min. IA Max. IA Results May 28 Sample Event 8 Min. IA Max. IA Results Min. IA Max. IA Max. IA Results Results Min. IA May 28 November 27 August 27 Sample Event 8 Sample Event 7 Sample Event 6 November 27 Sample Event 7 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NA NA NA NA NA August 27 Sample Event 6 Min. IA Max. IA Max. IA Results Results March 27 Sample Event 5 Min. IA March 27 Sample Event 5 Min. IA Max. IA Max. IA Results Results NOTES: AOC - Area of Concern Max. - Maximum - Subslab Soil Gas - Concentration Min. - Minimum ug/l - micrograms per liter COPC - Constituent of Potential Concern NA - Not Available ug/m 3 - micrograms per cubic meters IA - Indoor Air ND - Not Detected * - Not IAQ - Indoor Air Quality NJDEP - New Jersey Department of Environmental Protection 1 If a sample event is not listed, indoor air samples were not collected for that event. 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detecte in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 2. 3 Groundwater concentrations taken from the Groundwater AOC 2 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for five of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroet and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\C - AOC 2 Historic Results Summary\Table C-4 and C-5 CP4 Summary 2 of 3

174 APPENDIX TABLE C-5 SUMMARY OF INDOOR AIR RESULTS FOR CAMPUS PLAZA 4: GROUNDWATER AOC 2 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 1 : Compounds Detected in Groundwater for Groundwater AOC 2 and in IA and/or for Campus Plaza 4 Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No 1,4 1, 1,2-DICHLOROETHANE No 2 2 ACETONE ND 19 No 4,6 3,3 BENZENE ND 15 Yes 2 2 CARBON DISULFIDE ND 71 No 1, 73 CHLOROFORM 15 7 Yes 2 2 Cis-1,2-DICHLOROETHENE Yes ETHYLBENZENE ND 61 No 1,5 1,1 M,P-XYLENES ND 53 No METHYLENE CHLORIDE No 9 4 MTBE 29 7 No 4 2 O-XYLENE No TETRACHLOROETHYLENE 11 1 Yes 3 3 TOLUENE 7 31 No 7,2 5,1 TRANS-1,2-DICHLOROETHENE ND 3 No TRICHLOROETHYLENE Yes 3 3 XYLENES (TOTAL) 29 7 No Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 2, but for and/or Detected in IA and/or for Campus Plaza 4 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Compounds Not Detected or For In Groundwater COPC 5 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE * 24 No 44, 31, 1,2,4-TRICHLOROBENZENE ND 28 No ,2,4-TRIMETHYLBENZENE ND NLE No NLE NLE 1,3,5-TRIMETHYLBENZENE ND NLE No NLE NLE 1,4-DICHLOROBENZENE ND 75 No 3 3 2,2,4-TRIMETHYLPENTANE * NLE No NLE NLE 2-BUTANONE ND 27 No 7,2 5,1 3-CHLOROPROPENE ND 12 No ETHYLTOLUENE * NLE No NLE NLE 4-METHYL-2-PENTANONE ND 88 No 4,4 3,1 CARBON TETRACHLORIDE ND 1 No 3 3 CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No 5 2 CHLOROMETHANE ND 24 No CYCLOHEXANE * 12 No 8,7 6,2 DICHLORODIFLUOROMETHANE ND 9 No HEXACHLOROBUTADIENE ND 1 No 5 5 HEXANE * NLE No 1, 73 N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No 1,5 1, TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 No 1, 73 Min. IA Max. IA Results Min. IA Max. IA Results Min. IA Max. IA Results (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NA NA NA NA January 27 Sample Event 4 January 27 Sample Event 4 Min. IA Max. IA Results September 26 Sample Event 3 September 26 Sample Event 3 Min. IA Max. IA Results Jaunary 26 Sample Event 2 Jaunary 26 Sample Event 2 Min. IA Max. IA Results October 24 Sample Event 1 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NA NA NA NA Min. IA October 24 Sample Event 1 Min. IA Max. IA Max. IA Results Results NOTES: AOC - Area of Concern Max. - Maximum - Subslab Soil Gas - Concentration Min. - Minimum ug/l - micrograms per liter COPC - Constituent of Potential Concern NA - Not Available ug/m 3 - micrograms per cubic meters IA - Indoor Air ND - Not Detected * - Not IAQ - Indoor Air Quality NJDEP - New Jersey Department of Environmental Protection 1 If a sample event is not listed, indoor air samples were not collected for that event. 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detecte in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 2. 3 Groundwater concentrations taken from the Groundwater AOC 2 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for five of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroet and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\C - AOC 2 Historic Results Summary\Table C-4 and C-5 CP4 Summary 3 of 3

175 Appendix D AOC 6 Historic Results Summary

176 APPENDIX TABLE D-1 SUMMARY OF SUBSLAB SOIL GAS RESULTS FOR FERNWOOD AVENUE: GROUNDWATER AOC 6 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compounds Detected In Groundwater April 211 Sample Event 9 Most Recent Compound List 2 : Groundwater Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Groundwater Nonresidential Residential Compounds Detected in Groundwater for Concentration Screening Generic Soil Gas Generic Soil Gas at Historical COPC 5 Groundwater AOC 6 and in and/or Maximum 3 Levels 4 Screening Levels 6 Screening Levels 6 Samples Samples Samples Samples Samples for 12 Fernwood Avenue (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ,1-DICHLOROETHANE No ,1-DICHLOROETHENE No ,2-DICHLOROETHANE ND 2 No ,4-DICHLOROBENZENE No BENZENE Yes CARBON DISULFIDE ND 71 No CHLOROBENZENE No CIS-1,2-DICHLOROETHENE Yes TETRACHLOROETHYLENE 18 1 Yes TOLUENE No TRANS-1,2-DICHLOROETHENE No TRICHLOROETHYLENE 65 1 Yes VINYL CHLORIDE 29 1 Yes Compounds Not Detected or For In Groundwater April 211 September 29 February 29 October 28 June 28 Sample Event 9 Sample Event 8 Sample Event 7 Sample Event 6 Sample Event 5 Most Recent Compound List 2 : Groundwater Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Groundwater Nonresidential Residential Compounds Detected in Groundwater for Concentration Screening Generic Soil Gas Generic Soil Gas at Historical COPC 5 Groundwater AOC 6 and in and/or Maximum 3 Levels 4 Screening Levels 6 Screening Levels 6 Samples Samples Samples Samples Samples for 12 Fernwood Avenue (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,2,2-TETRACHLOROETHANE ND No ,1,2-TRICHLORO-1,2,2- * 24 No ,1,2-TRICHLOROETHANE ND 5 No ,2,4-TRICHLOROBENZENE * 28 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE ,2-DICHLOROBENZENE ND NLE No ,2-DICHLOROPROPANE ND 1 No ,2-DICHLOROTETRAFLUOROETHANE * NLE No NLE NLE ,3,5-TRIMETHYLBENZENE * NLE No NLE NLE ,3-DICHLOROBENZENE ND NLE No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE BUTANONE ND 27 No CHLOROTOLUENE * 12 No ETHYLTOLUENE * NLE No NLE NLE METHYL-2-PENTANONE ND 88 No ACETONE ND 19 No BROMODICHLOROMETHANE ND 5.69 No BROMOETHENE *.1 No BROMOFORM ND 37 No BROMOMETHANE ND 29 No CARBON TETRACHLORIDE ND 1 No CHLOROETHANE ND 4 No CHLOROFORM ND 7 No CHLOROMETHANE ND 24 No CIS-1,3-DICHLOROPROPENE ND NLE No NLE NLE CYCLOHEXANE * 12 No DIBROMOCHLOROMETHANE ND 9 No DICHLORODIFLUOROMETHANE ND 1 No ETHYLBENZENE ND 61 No HEXACHLOROBUTADIENE * 1 No HEXANE * NLE No M,P-XYLENES ND 7 No METHYLENE CHLORIDE ND 53 No MTBE * 78 No N-HEPTANE * 3 No NLE NLE O-XYLENE ND 7 No STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRANS-1,3-DICHLOROPROPENE ND NLE No NLE NLE TRICHLOROFLUOROMETHANE ND 2 No September 29 Sample Event 8 February 29 Sample Event 7 October 28 Sample Event 6 June 28 Sample Event 5 NOTES: AOC - Area of Concern Max. - Maximum NJDEP - New Jersey Department of Environmental Protection - Concentration Min. - Minimum - Subslab Soil Gas COPC - Constituent of Potential Concern NA - Not Available ug/l - micrograms per liter IA - Indoor Air ND - Not Detected ug/m 3 - micrograms per cubic meters IAQ - Indoor Air Quality * - Not 1 If a sample event is not listed, subslab soil gas samples were not collected for that even 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detec in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 6. 3 Groundwater concentrations taken from the Groundwater AOC 6 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for eight of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethe and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\D - AOC 6 Historic Results Summary\Table D-1 and D-2 12_Fern Summary 1 of 2

177 APPENDIX TABLE D-1 SUMMARY OF SUBSLAB SOIL GAS RESULTS FOR FERNWOOD AVENUE: GROUNDWATER AOC 6 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 6 and in and/or for 12 Fernwood Avenue Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ,1-DICHLOROETHANE No ,1-DICHLOROETHENE No ,2-DICHLOROETHANE ND 2 No 2 2 1,4-DICHLOROBENZENE No 32 3 BENZENE Yes CARBON DISULFIDE ND 71 No CHLOROBENZENE No CIS-1,2-DICHLOROETHENE Yes TETRACHLOROETHYLENE 18 1 Yes TOLUENE No TRANS-1,2-DICHLOROETHENE No TRICHLOROETHYLENE 65 1 Yes VINYL CHLORIDE 29 1 Yes Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 6 and in and/or for 12 Fernwood Avenue Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Compounds Not Detected or For In Groundwater COPC 5 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,2,2-TETRACHLOROETHANE ND No ,1,2-TRICHLORO-1,2,2- * 24 No ,1,2-TRICHLOROETHANE ND 5 No ,2,4-TRICHLOROBENZENE * 28 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE 1,2-DICHLOROBENZENE ND NLE No ,2-DICHLOROPROPANE ND 1 No ,2-DICHLOROTETRAFLUOROETHANE * NLE No NLE NLE 1,3,5-TRIMETHYLBENZENE * NLE No NLE NLE 1,3-DICHLOROBENZENE ND NLE No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE 2-BUTANONE ND 27 No CHLOROTOLUENE * 12 No ETHYLTOLUENE * NLE No NLE NLE 4-METHYL-2-PENTANONE ND 88 No ACETONE ND 19 No BROMODICHLOROMETHANE ND 5.69 No BROMOETHENE *.1 No BROMOFORM ND 37 No 18 8 BROMOMETHANE ND 29 No CARBON TETRACHLORIDE ND 1 No CHLOROETHANE ND 4 No CHLOROFORM ND 7 No CHLOROMETHANE ND 24 No CIS-1,3-DICHLOROPROPENE ND NLE No NLE NLE CYCLOHEXANE * 12 No DIBROMOCHLOROMETHANE ND 9 No DICHLORODIFLUOROMETHANE ND 1 No ETHYLBENZENE ND 61 No HEXACHLOROBUTADIENE * 1 No HEXANE * NLE No M,P-XYLENES ND 7 No METHYLENE CHLORIDE ND 53 No MTBE * 78 No N-HEPTANE * 3 No NLE NLE O-XYLENE ND 7 No STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRANS-1,3-DICHLOROPROPENE ND NLE No NLE NLE TRICHLOROFLUOROMETHANE ND 2 No Samples Min. Max. Min. Max. (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Samples November 27 Sample Event 4 November 27 Sample Event 4 Min. Max. Samples Samples April 27 Sample Event 3 April 27 Sample Event 3 Min. Max. Samples Samples September 26 Sample Event 2 September 26 Sample Event 2 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Min. Min. Max. Max. Samples Samples March 26 Sample Event 1 March 26 Sample Event 1 Min. Min. Max. Max. NOTES: AOC - Area of Concern Max. - Maximum NJDEP - New Jersey Department of Environmental Protecti - Concentration Min. - Minimum - Subslab Soil Gas COPC - Constituent of Potential Concern NA - Not Available ug/l - micrograms per liter IA - Indoor Air ND - Not Detected ug/m 3 - micrograms per cubic meters IAQ - Indoor Air Quality * - Not 1 If a sample event is not listed, subslab soil gas samples were not collected for that even 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detec in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 6. 3 Groundwater concentrations taken from the Groundwater AOC 6 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for eight of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichl and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\D - AOC 6 Historic Results Summary\Table D-1 and D-2 12_Fern Summary 2 of 2

178 APPENDIX TABLE D-2 SUMMARY OF INDOOR AIR RESULTS FOR FERNWOOD AVENUE: GROUNDWATER AOC 6 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 6 and in IA and/or for 12 Fernwood Avenue Most Recent Table 1 Groundwater NJDEP Concentration at Groundwater Historical Screening Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 Min. IA Max. IA Results Min. IA Max. IA Results Min. IA Max. IA Results Min. IA Max. IA Results Min. IA Max. IA Results Min. IA Max. IA Results Maximum 3 Levels 4 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ,1-DICHLOROETHANE No ,1-DICHLOROETHENE No ,2-DICHLOROETHANE ND 2 No ,4-DICHLOROBENZENE No BENZENE Yes CARBON DISULFIDE ND 71 No CHLOROBENZENE No CIS-1,2-DICHLOROETHENE Yes TETRACHLOROETHYLENE 18 1 Yes TOLUENE No TRANS-1,2-DICHLOROETHENE No TRICHLOROETHYLENE 65 1 Yes VINYL CHLORIDE 29 1 Yes Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 6, but for and/or Detected in IA and/or for 12 Fernwood Avenue Compounds Detected In Groundwater Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Table 1 NJDEP Groundwater Screening COPC 5 COPC 5 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 April 211 Sample Event 9 April 211 Sample Event 9 Min. IA Max. IA Results September 29 Sample Event 8 September 29 Sample Event 8 Min. IA Max. IA Results Min. IA Max. IA Results Min. IA Max. IA Results Min. IA Max. IA Results Min. IA Max. IA Results Maximum 3 Levels 4 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,2,2-TETRACHLOROETHANE ND No ,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE * 24 No ,1,2-TRICHLOROETHANE ND 5 No ,2,4-TRICHLOROBENZENE * 28 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE ,2-DICHLOROBENZENE ND NLE No ,2-DICHLOROPROPANE ND 1 No ,2-DICHLOROTETRAFLUOROETHANE * NLE No NLE NLE ,3,5-TRIMETHYLBENZENE * NLE No NLE NLE ,3-DICHLOROBENZENE ND NLE No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE BUTANONE ND 27 No CHLOROTOLUENE * 12 No ETHYLTOLUENE * NLE No NLE NLE METHYL-2-PENTANONE ND 88 No ACETONE ND 19 No BROMODICHLOROMETHANE ND 5.69 No BROMOETHENE *.1 No BROMOFORM ND 37 No BROMOMETHANE ND 29 No CARBON TETRACHLORIDE ND 1 No CHLOROETHANE ND 4 No CHLOROFORM ND 7 No CHLOROMETHANE ND 24 No CIS-1,3-DICHLOROPROPENE ND NLE No NLE NLE CYCLOHEXANE * 12 No DIBROMOCHLOROMETHANE ND 9 No DICHLORODIFLUOROMETHANE ND 1 No ETHYLBENZENE ND 61 No HEXACHLOROBUTADIENE * 1 No HEXANE * NLE No M,P-XYLENES ND 7 No METHYLENE CHLORIDE ND 53 No MTBE * 78 No N-HEPTANE * 3 No NLE NLE O-XYLENE ND 7 No STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRANS-1,3-DICHLOROPROPENE ND NLE No NLE NLE TRICHLOROFLUOROMETHANE ND 2 No March 29 Sample Event 7 March 29 Sample Event 7 October 28 Sample Event 6 October 28 Sample Event 6 June 28 Sample Event 5 June 28 Sample Event 5 November 27 Sample Event 4 November 27 Sample Event 4 NOTES: AOC - Area of Concern Max. - Maximum NJDEP - New Jersey Department of Environmental Protection - Concentration Min. - Minimum - Subslab Soil Gas COPC - Constituent of Potential Concern NA - Not Available ug/l - micrograms per liter IA - Indoor Air ND - Not Detected ug/m 3 - micrograms per cubic meters IAQ - Indoor Air Quality * - Not 1 If a sample event is not listed, indoor air samples were not collected for that event. 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detec in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 6. 3 Groundwater concentrations taken from the Groundwater AOC 6 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for eight of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethe and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\D - AOC 6 Historic Results Summary\Table D-1 and D-2 12_Fern Summary 1 of 2

179 APPENDIX TABLE D-2 SUMMARY OF INDOOR AIR RESULTS FOR FERNWOOD AVENUE: GROUNDWATER AOC 6 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 6 and in IA and/or for 12 Fernwood Avenue Most Recent Table 1 Groundwater NJDEP Concentration at Groundwater Historical Screening Maximum 3 Levels 4 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ,1-DICHLOROETHANE No ,1-DICHLOROETHENE No ,2-DICHLOROETHANE ND 2 No 2 2 1,4-DICHLOROBENZENE No 3 3 BENZENE Yes 2 2 CARBON DISULFIDE ND 71 No 1 73 CHLOROBENZENE No CIS-1,2-DICHLOROETHENE Yes TETRACHLOROETHYLENE 18 1 Yes 3 3 TOLUENE No TRANS-1,2-DICHLOROETHENE No 1 73 TRICHLOROETHYLENE 65 1 Yes 3 3 VINYL CHLORIDE 29 1 Yes 1 1 Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 6, but for and/or Detected in IA and/or for 12 Fernwood Avenue Compounds Detected In Groundwater Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Table 1 NJDEP Groundwater Screening COPC 5 COPC 5 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 Maximum 3 Levels 4 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,2,2-TETRACHLOROETHANE ND No 3 3 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE * 24 No ,1,2-TRICHLOROETHANE ND 5 No 3 3 1,2,4-TRICHLOROBENZENE * 28 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE 1,2-DICHLOROBENZENE ND NLE No ,2-DICHLOROPROPANE ND 1 No 2 2 1,2-DICHLOROTETRAFLUOROETHANE * NLE No NLE NLE 1,3,5-TRIMETHYLBENZENE * NLE No NLE NLE 1,3-DICHLOROBENZENE ND NLE No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE 2-BUTANONE ND 27 No CHLOROTOLUENE * 12 No ETHYLTOLUENE * NLE No NLE NLE 4-METHYL-2-PENTANONE ND 88 No ACETONE ND 19 No BROMODICHLOROMETHANE ND 5.69 No 3 3 BROMOETHENE *.1 No 2 2 BROMOFORM ND 37 No 5 5 BROMOMETHANE ND 29 No 7 5 CARBON TETRACHLORIDE ND 1 No 3 3 CHLOROETHANE ND 4 No 5 2 CHLOROFORM ND 7 No 2 2 CHLOROMETHANE ND 24 No CIS-1,3-DICHLOROPROPENE ND NLE No NLE NLE CYCLOHEXANE * 12 No DIBROMOCHLOROMETHANE ND 9 No 4 4 DICHLORODIFLUOROMETHANE ND 1 No ETHYLBENZENE ND 61 No HEXACHLOROBUTADIENE * 1 No 5 5 HEXANE * NLE No 1 73 M,P-XYLENES ND 7 No METHYLENE CHLORIDE ND 53 No 9 4 MTBE * 78 No 4 2 N-HEPTANE * 3 No NLE NLE O-XYLENE ND 7 No STYRENE ND 18 No 15 1 TERT-BUTYL ALCOHOL * NLE No TRANS-1,3-DICHLOROPROPENE ND NLE No NLE NLE TRICHLOROFLUOROMETHANE ND 2 No 1 73 Min. IA Max. IA Results Min. IA Max. IA Results (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) April 27 Sample Event 3 April 27 Sample Event 3 Min. IA Max. IA Results September 26 Sample Event 2 September 26 Sample Event 2 Min. IA Max. IA Results (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NOTES: AOC - Area of Concern Max. - Maximum NJDEP - New Jersey Department of Environmental Protection - Concentration Min. - Minimum - Subslab Soil Gas COPC - Constituent of Potential Concern NA - Not Available ug/l - micrograms per liter IA - Indoor Air ND - Not Detected ug/m 3 - micrograms per cubic meters IAQ - Indoor Air Quality * - Not 1 If a sample event is not listed, indoor air samples were not collected for that event. 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detec in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 6. 3 Groundwater concentrations taken from the Groundwater AOC 6 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for eight of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethe and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\D - AOC 6 Historic Results Summary\Table D-1 and D-2 12_Fern Summary 2 of 2

180 Appendix E AOC 8 Historic Results Summary

181 APPENDIX TABLE E-1 SUMMARY OF SUBSLAB SOIL GAS RESULTS FOR EPA BUILDING 1: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 8 and in IA and/or for EPA Building 1 Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 Min. Max. Min. Max. (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ,1-DICHLOROETHENE No ACETONE 8 19 No BENZENE Yes BROMODICHLOROMETHANE ND 5.69 No CARBON DISULFIDE ND 71 No CHLOROFORM No CHLOROMETHANE ND 24 No CIS-1,2-DICHLOROETHENE No ETHYLBENZENE No M,P-XYLENES 81 7 No METHYLENE CHLORIDE.56J 53 No MTBE No O-XYLENE 81 7 No TETRACHLOROETHYLENE ND 1 Yes TOLUENE No TRANS-1,2-DICHLOROETHENE.76J 3 No TRICHLOROETHYLENE 19 1 Yes VINYL CHLORIDE Yes XYLENES (TOTAL) 81 7 No NA NA NA NA NA Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 8, but for and/or Detected in IA and/or for EPA Building 1 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Compounds Not Detected or For In Groundwater COPC 5 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 Samples Samples February 211 Sample Event 14 February 211 Sample Event 14 Min. Max. September 21 Sample Event 13 Samples September 21 Sample Event 13 Samples Min. Max. Samples (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,2,2-TETRACHLOROETHANE ND No ,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE ND 24 No ,1,2-TRICHLOROETHANE ND 5 No ,1-DICHLOROETHANE ND 36 No ,2,4-TRICHLOROBENZENE ND 28 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE ,2-DICHLOROBENZENE ND 59 No ,2-DICHLOROETHANE ND 2 No ,2-DICHLOROPROPANE ND 1 No ,2-DICHLOROTETRAFLUOROETHANE * NLE No NLE NLE ,3,5-TRIMETHYLBENZENE * NLE No NLE NLE ,3-BUTADIENE *.1 No ,3-DICHLOROBENZENE ND 6 No ,4-DICHLOROBENZENE ND 75 No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE BUTANONE ND 27 No CHLOROTOLUENE * 12 No CHLOROPROPENE *.8 No ETHYLTOLUENE * NLE No NLE NLE METHYL-2-PENTANONE ND 88 No BROMOETHENE *.1 No BROMOFORM ND 37 No BROMOMETHANE ND 29 No CARBON TETRACHLORIDE ND 1 No CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No CIS-1,3-DICHLOROPROPENE ND NLE No NLE NLE CYCLOHEXANE ND 12 No DIBROMOCHLOROMETHANE ND 9 No DICHLORODIFLUOROMETHANE ND 1 No HEXACHLOROBUTADIENE ND 1 No HEXANE * NLE No N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRANS-1,3-DICHLOROPROPENE ND NLE No NLE NLE TRICHLOROFLUOROMETHANE ND 2 No March 21 Sample Event 12 Samples March 21 Sample Event 12 Min. Max. Min. Max. Sepetmber 29 Sample Event 11 Samples Sepetmber 29 Sample Event 11 Samples Min. Max. Min. Max. March 29 Sample Event 1 Samples March 29 Sample Event 1 Samples Min. Max. Min. Max. September 28 Sample Event 9 Samples September 28 Sample Event 9 Samples Min. Max. Min. Max. June 28 Sample Event 8 Samples June 28 Sample Event 8 Samples Min. Max. Min. Max. NOTES: AOC - Area of Concern J - Estimated Value NJDEP - New Jersey Department of Environmental Protection - Concentration Max. - Maximum - Subslab Soil Gas COPC - Constituent of Potential Concern Min. - Minimum ug/l - micrograms per liter 3 IA - Indoor Air NA - Not Available ug/m - micrograms per cubic meter IAQ - Indoor Air Quality ND - Not Detected * - Not 1 If a sample event is not listed, subslab soil gas samples were not collected for that eve 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detec in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 8. 3 Groundwater concentrations taken from the Groundwater AOC 8 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for eight of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroeth and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-1 and E-2 EPA_1 Summary 1 of 2

182 APPENDIX TABLE E-1 SUMMARY OF SUBSLAB SOIL GAS RESULTS FOR EPA BUILDING 1: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 8 and in IA and/or for EPA Building 1 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ,1-DICHLOROETHENE No ACETONE 8 19 No BENZENE Yes BROMODICHLOROMETHANE ND 5.69 No CARBON DISULFIDE ND 71 No CHLOROFORM No CHLOROMETHANE ND 24 No CIS-1,2-DICHLOROETHENE No ETHYLBENZENE No M,P-XYLENES 81 7 No METHYLENE CHLORIDE.56J 53 No MTBE No O-XYLENE 81 7 No TETRACHLOROETHYLENE ND 1 Yes TOLUENE No TRANS-1,2-DICHLOROETHENE.76J 3 No TRICHLOROETHYLENE 19 1 Yes VINYL CHLORIDE Yes XYLENES (TOTAL) 81 7 No Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 8, but for and/or Detected in IA and/or for EPA Building 1 Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Compounds Not Detected or For In Groundwater COPC 5 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,2,2-TETRACHLOROETHANE ND No ,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE ND 24 No ,1,2-TRICHLOROETHANE ND 5 No ,1-DICHLOROETHANE ND 36 No ,2,4-TRICHLOROBENZENE ND 28 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE 1,2-DICHLOROBENZENE ND 59 No ,2-DICHLOROETHANE ND 2 No 2 2 1,2-DICHLOROPROPANE ND 1 No ,2-DICHLOROTETRAFLUOROETHANE * NLE No NLE NLE 1,3,5-TRIMETHYLBENZENE * NLE No NLE NLE 1,3-BUTADIENE *.1 No ,3-DICHLOROBENZENE ND 6 No ,4-DICHLOROBENZENE ND 75 No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE 2-BUTANONE ND 27 No CHLOROTOLUENE * 12 No CHLOROPROPENE *.8 No ETHYLTOLUENE * NLE No NLE NLE 4-METHYL-2-PENTANONE ND 88 No BROMOETHENE *.1 No BROMOFORM ND 37 No 18 8 BROMOMETHANE ND 29 No CARBON TETRACHLORIDE ND 1 No CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No CIS-1,3-DICHLOROPROPENE ND NLE No NLE NLE CYCLOHEXANE ND 12 No DIBROMOCHLOROMETHANE ND 9 No DICHLORODIFLUOROMETHANE ND 1 No HEXACHLOROBUTADIENE ND 1 No HEXANE * NLE No N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRANS-1,3-DICHLOROPROPENE ND NLE No NLE NLE TRICHLOROFLUOROMETHANE ND 2 No Samples Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NA NA NA NA NA NA NA Samples August 27 Sample Event 7 August 27 Sample Event 7 Min. Max. April 27 Sample Event 5 Samples April 27 Sample Event 5 Samples Min. Max. Samples January 27 Sample Event 5 Samples January 27 Sample Event 5 Min. Max. September 26 Sample Event 4 Samples September 26 Sample Event 4 Samples Min. Max. June 26 Sample Event 3 Samples June 26 Sample Event 3 Samples Min. Max. January 26 Sample Event 2 Samples January 26 Sample Event 2 Samples Min. Max. January 25 Sample Event 1 Samples January 25 Sample Event 1 Samples Min. Max. (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NOTES: AOC - Area of Concern J - Estimated Value NJDEP - New Jersey Department of Environmental Prot - Concentration Max. - Maximum - Subslab Soil Gas COPC - Constituent of Potential Concern Min. - Minimum ug/l - micrograms per liter 3 IA - Indoor Air NA - Not Available ug/m - micrograms per cubic meter IAQ - Indoor Air Quality ND - Not Detected * - Not 1 If a sample event is not listed, subslab soil gas samples were not collected for that eve 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detec in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 8. 3 Groundwater concentrations taken from the Groundwater AOC 8 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for eight of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroe and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-1 and E-2 EPA_1 Summary 2 of 2

183 APPENDIX TABLE E-2 SUMMARY OF INDOOR AIR RESULTS FOR EPA BUILDING 1: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 8 and in IA and/or for EPA Building 1 Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 Min. IA Max. IA Results Min. IA Max. IA Results (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ,1-DICHLOROETHENE No ACETONE 8 19 No BENZENE Yes BROMODICHLOROMETHANE ND 5.69 No CARBON DISULFIDE ND 71 No CHLOROFORM No CHLOROMETHANE ND 24 No CIS-1,2-DICHLOROETHENE No ETHYLBENZENE No M,P-XYLENES 81 7 No METHYLENE CHLORIDE.56J 53 No MTBE No O-XYLENE 81 7 No TETRACHLOROETHYLENE ND 1 Yes TOLUENE No TRANS-1,2-DICHLOROETHENE.76J 3 No TRICHLOROETHYLENE 19 1 Yes VINYL CHLORIDE Yes XYLENES (TOTAL) 81 7 No NA NA NA NA NA Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 8, but for and/or Detected in IA and/or for EPA Building 1 Compounds Detected In Groundwater Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 COPC 5 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 February 211 Sample Event 13 February 211 Sample Event 13 Min. IA Max. IA Results September 21 Sample Event 12 Min. IA Max. IA Results (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,2,2-TETRACHLOROETHANE ND No ,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE ND 24 No ,1,2-TRICHLOROETHANE ND 5 No ,1-DICHLOROETHANE ND 36 No ,2,4-TRICHLOROBENZENE ND 28 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE ,2-DICHLOROBENZENE ND 59 No ,2-DICHLOROETHANE ND 2 No ,2-DICHLOROPROPANE ND 1 No ,2-DICHLOROTETRAFLUOROETHANE * NLE No NLE NLE ,3,5-TRIMETHYLBENZENE * NLE No NLE NLE ,3-BUTADIENE *.1 No ,3-DICHLOROBENZENE ND 6 No ,4-DICHLOROBENZENE ND 75 No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE BUTANONE ND 27 No CHLOROTOLUENE * 12 No CHLOROPROPENE *.8 No ETHYLTOLUENE * NLE No NLE NLE METHYL-2-PENTANONE ND 88 No BROMOETHENE *.1 No BROMOFORM ND 37 No BROMOMETHANE ND 29 No CARBON TETRACHLORIDE ND 1 No CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No CIS-1,3-DICHLOROPROPENE ND NLE No NLE NLE CYCLOHEXANE ND 12 No DIBROMOCHLOROMETHANE ND 9 No DICHLORODIFLUOROMETHANE ND 1 No HEXACHLOROBUTADIENE ND 1 No HEXANE * NLE No N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRANS-1,3-DICHLOROPROPENE ND NLE No NLE NLE TRICHLOROFLUOROMETHANE ND 2 No March 21 Sample Event 11 Min. IA Min. IA Max. IA Max. IA Results Results September 29 Sample Event 1 Min. IA Min. IA Max. IA Max. IA Results September 21 March 21 September 29 March 29 September 28 June 28 Sample Event 12 Sample Event 11 Sample Event 1 Sample Event 9 Sample Event 8 Sample Event 7 Results March 29 Sample Event 9 Min. IA Min. IA Max. IA Max. IA Results Results September 28 Sample Event 8 Min. IA Min. IA Max. IA Max. IA Results Results June 28 Sample Event 7 Min. IA Min. IA Max. IA Results Max. IA Results NOTES: AOC - Area of Concern J - Estimated Value NJDEP - New Jersey Department of Environmental Protection - Concentration Max. - Maximum - Subslab Soil Gas COPC - Constituent of Potential Concern Min. - Minimum ug/l - micrograms per liter 3 IA - Indoor Air NA - Not Available ug/m - micrograms per cubic meter IAQ - Indoor Air Quality ND - Not Detected * - Not 1 If a sample event is not listed, indoor air samples were not collected for that event. 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detec in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 8. 3 Groundwater concentrations taken from the Groundwater AOC 8 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for eight of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroeth and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-1 and E-2 EPA_1 Summary 1 of 2

184 APPENDIX TABLE E-2 SUMMARY OF INDOOR AIR RESULTS FOR EPA BUILDING 1: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 8 and in IA and/or for EPA Building 1 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ,1-DICHLOROETHENE No ACETONE 8 19 No BENZENE Yes 2 2 BROMODICHLOROMETHANE ND 5.69 No 3 3 CARBON DISULFIDE ND 71 No 1 73 CHLOROFORM No 2 2 CHLOROMETHANE ND 24 No CIS-1,2-DICHLOROETHENE No ETHYLBENZENE No M,P-XYLENES 81 7 No METHYLENE CHLORIDE.56J 53 No 9 4 MTBE No 4 2 O-XYLENE 81 7 No TETRACHLOROETHYLENE ND 1 Yes 3 3 TOLUENE No TRANS-1,2-DICHLOROETHENE.76J 3 No 1 73 TRICHLOROETHYLENE 19 1 Yes 3 3 VINYL CHLORIDE Yes 1 1 XYLENES (TOTAL) 81 7 No Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 8, but for and/or Detected in IA and/or for EPA Building 1 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 COPC 5 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,2,2-TETRACHLOROETHANE ND No 3 3 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE ND 24 No ,1,2-TRICHLOROETHANE ND 5 No 3 3 1,1-DICHLOROETHANE ND 36 No ,2,4-TRICHLOROBENZENE ND 28 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE 1,2-DICHLOROBENZENE ND 59 No ,2-DICHLOROETHANE ND 2 No 2 2 1,2-DICHLOROPROPANE ND 1 No 2 2 1,2-DICHLOROTETRAFLUOROETHANE * NLE No NLE NLE 1,3,5-TRIMETHYLBENZENE * NLE No NLE NLE 1,3-BUTADIENE *.1 No 1 1 1,3-DICHLOROBENZENE ND 6 No ,4-DICHLOROBENZENE ND 75 No 3 3 2,2,4-TRIMETHYLPENTANE * NLE No NLE NLE 2-BUTANONE ND 27 No CHLOROTOLUENE * 12 No CHLOROPROPENE *.8 No ETHYLTOLUENE * NLE No NLE NLE 4-METHYL-2-PENTANONE ND 88 No BROMOETHENE *.1 No 2 2 BROMOFORM ND 37 No 5 5 BROMOMETHANE ND 29 No 7 5 CARBON TETRACHLORIDE ND 1 No 3 3 CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No 5 2 CIS-1,3-DICHLOROPROPENE ND NLE No NLE NLE CYCLOHEXANE ND 12 No DIBROMOCHLOROMETHANE ND 9 No 4 4 DICHLORODIFLUOROMETHANE ND 1 No HEXACHLOROBUTADIENE ND 1 No 5 5 HEXANE * NLE No 1 73 N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No 15 1 TERT-BUTYL ALCOHOL * NLE No TRANS-1,3-DICHLOROPROPENE ND NLE No NLE NLE TRICHLOROFLUOROMETHANE ND 2 No 1 73 Min. IA Max. IA Results Min. IA Max. IA Results Min. IA Max. IA Results Min. IA Max. IA Results Min. IA Max. IA Results Min. IA Max. IA Results (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NA NA NA NA NA NA August 27 Sample Event 6 Min. IA Max. IA Results August 27 April 27 January 27 September 26 June 26 January 26 Sample Event 6 Sample Event 5 Sample Event 4 Sample Event 3 Sample Event 2 Sample Event 1 April 27 January 27 September 26 June 26 January 26 Sample Event 5 Sample Event 4 Sample Event 3 Sample Event 2 Sample Event 1 Min. IA Max. IA Results Min. IA Max. IA Results Min. IA Max. IA Results Min. IA Max. IA Results Min. IA Max. IA Results (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NOTES: AOC - Area of Concern J - Estimated Value NJDEP - New Jersey Department of Environmental Protection - Concentration Max. - Maximum - Subslab Soil Gas COPC - Constituent of Potential Concern Min. - Minimum ug/l - micrograms per liter 3 IA - Indoor Air NA - Not Available ug/m - micrograms per cubic meter IAQ - Indoor Air Quality ND - Not Detected * - Not 1 If a sample event is not listed, indoor air samples were not collected for that event. 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detec in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 8. 3 Groundwater concentrations taken from the Groundwater AOC 8 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for eight of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroeth and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-1 and E-2 EPA_1 Summary 2 of 2

185 APPENDIX TABLE E-3 SUMMARY OF SUBSLAB SOIL GAS RESULTS FOR EPA BUILDING 18: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 8 and in IA and/or for EPA Building 18 Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 Min. SG Max. SG (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ACETONE 8 19 No BENZENE Yes CARBON DISULFIDE ND 71 No CHLOROFORM No CHLOROMETHANE ND 24 No ETHYLBENZENE No M,P-XYLENES 81 7 No METHYLENE CHLORIDE.56J 53 No MTBE No O-XYLENE 81 7 No TETRACHLOROETHYLENE ND 1 Yes TOLUENE No TRICHLOROETHYLENE 19 1 Yes XYLENES (TOTAL) 81 7 No Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 8, but for and/or Detected in IA and/or for EPA Building 18 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 Min. SG Max. SG (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE ND 24 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE ,2-DICHLOROETHANE ND 2 No ,3,5-TRIMETHYLBENZENE * NLE No NLE NLE ,3-BUTADIENE *.1 No ,4-DICHLOROBENZENE ND 75 No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE BUTANONE ND 27 No ETHYLTOLUENE * NLE No NLE NLE METHYL-2-PENTANONE ND 88 No CARBON TETRACHLORIDE ND 1 No CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No CYCLOHEXANE ND 12 No DICHLORODIFLUOROMETHANE ND 1 No HEXANE * NLE No N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 No NOTES: AOC - Area of Concern IAQ - Indoor Air Quality ND - Not Detected - Concentration J - Estimated Value - Subslab Soil Gas COPC - Constituent of Potential Concern Max. - Maximum ug/l - micrograms per liter EPA - Environmental Protection Agency Min. - Minimum ug/m 3 - micrograms per cubic meters IA - Indoor Air NA - Not Available * - Not NJDEP - New Jersey Department of Environmental Protection 1 If a sample event is not listed, subslab soil gas samples were not collected for that event. 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detecte in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 8. 3 Groundwater concentrations taken from the Groundwater AOC 8 COPC Table: Table 5-1. COPC 5 Compounds Not Detected or For In Groundwater COPC 5 4 NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for five of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethen and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. SG Samples SG Samples February 211 September 21 March 21 Sepetmber 29 March 29 September 28 Sample Event 13 Sample Event 12 Sample Event 11 Sample Event 1 Sample Event 9 Sample Event 8 February 211 Sample Event 13 SG Samples SG Samples Min. SG September 21 Sample Event 12 Min. SG Max. SG Max. SG SG Samples SG Samples Min. SG March 21 Sample Event 11 Min. SG Max. SG Max. SG SG Samples SG Samples Min. SG Sepetmber 29 Sample Event 1 Min. SG Max. SG Max. SG SG Samples SG Samples Min. SG March 29 Sample Event 9 Min. SG Max. SG Max. SG SG Samples SG Samples Min. SG September 28 Sample Event 8 Min. SG Max. SG Max. SG Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-3 and E-4 EPA_18 Summary 1 of 2

186 APPENDIX TABLE E-3 SUMMARY OF SUBSLAB SOIL GAS RESULTS FOR EPA BUILDING 18: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 8 and in IA and/or for EPA Building 18 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ACETONE 8 19 No BENZENE Yes CARBON DISULFIDE ND 71 No CHLOROFORM No CHLOROMETHANE ND 24 No ETHYLBENZENE No M,P-XYLENES 81 7 No METHYLENE CHLORIDE.56J 53 No MTBE No O-XYLENE 81 7 No TETRACHLOROETHYLENE ND 1 Yes TOLUENE No TRICHLOROETHYLENE 19 1 Yes XYLENES (TOTAL) 81 7 No Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 8, but for and/or Detected in IA and/or for EPA Building 18 Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE ND 24 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE 1,2-DICHLOROETHANE ND 2 No 2 2 1,3,5-TRIMETHYLBENZENE * NLE No NLE NLE 1,3-BUTADIENE *.1 No ,4-DICHLOROBENZENE ND 75 No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE 2-BUTANONE ND 27 No ETHYLTOLUENE * NLE No NLE NLE 4-METHYL-2-PENTANONE ND 88 No CARBON TETRACHLORIDE ND 1 No CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No CYCLOHEXANE ND 12 No DICHLORODIFLUOROMETHANE ND 1 No HEXANE * NLE No N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 No NOTES: AOC - Area of Concern IAQ - Indoor Air Quality ND - Not Detected - Concentration J - Estimated Value - Subslab Soil Gas COPC - Constituent of Potential Concern Max. - Maximum ug/l - micrograms per liter EPA - Environmental Protection Agency Min. - Minimum ug/m 3 - micrograms per cubic meters IA - Indoor Air NA - Not Available * - Not NJDEP - New Jersey Department of Environmental Protection 1 If a sample event is not listed, subslab soil gas samples were not collected for that event. 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detecte in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 8. 3 Groundwater concentrations taken from the Groundwater AOC 8 COPC Table: Table 5-1. COPC 5 Compounds Not Detected or For In Groundwater COPC 5 4 NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for five of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethen and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. SG Samples Min. SG Max. SG Min. SG Max. SG Min. SG Max. SG (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) SG Samples June 28 Sample Event 7 June 28 Sample Event 7 Min. SG Max. SG SG Samples SG Samples August 27 April 27 January 27 September 26 Sample Event 6 Sample Event 5 Sample Event 4 Sample Event 3 August 27 Sample Event 6 Min. SG Max. SG SG Samples SG Samples April 27 Sample Event 5 Min. SG Max. SG SG Samples SG Samples (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Min. SG January 27 Sample Event 4 Min. SG Max. SG Max. SG SG Samples SG Samples Min. SG September 26 Sample Event 3 Min. SG Max. SG Max. SG SG Samples SG Samples June 26 Sample Event 2 Min. SG June 26 Sample Event 2 Min. SG Max. SG Max. SG Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-3 and E-4 EPA_18 Summary 2 of 2

187 APPENDIX TABLE E-4 SUMMARY OF INDOOR AIR RESULTS FOR EPA BUILDING 18: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 8 and in IA and/or for EPA Building 18 Most Recent Groundwater Concentration at Historical Maximum 3 Table 1 NJDEP Groundwater Screening Levels 4 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 Min. IA Max. IA Results (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ACETONE 8 19 No BENZENE Yes CARBON DISULFIDE ND 71 No CHLOROFORM No CHLOROMETHANE ND 24 No ETHYLBENZENE No M,P-XYLENES 81 7 No METHYLENE CHLORIDE.56J 53 No MTBE No O-XYLENE 81 7 No TETRACHLOROETHYLENE ND 1 Yes TOLUENE No TRICHLOROETHYLENE 19 1 Yes XYLENES (TOTAL) 81 7 No NA NA Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 8, but for and/or Detected in IA and/or for EPA Building 18 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Table 1 NJDEP Groundwater Screening Levels 4 COPC 5 Compounds Not Detected or For In Groundwater COPC 5 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 February 211 Sample Event 13 February 211 Sample Event 13 Min. IA Max. IA Results September 21 Sample Event 12 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE ND 24 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE ,2-DICHLOROETHANE ND 2 No ,3,5-TRIMETHYLBENZENE * NLE No NLE NLE ,3-BUTADIENE *.1 No ,4-DICHLOROBENZENE ND 75 No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE BUTANONE ND 27 No ETHYLTOLUENE * NLE No NLE NLE METHYL-2-PENTANONE ND 88 No CARBON TETRACHLORIDE ND 1 No CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No CYCLOHEXANE ND 12 No DICHLORODIFLUOROMETHANE ND 1 No HEXANE * NLE No N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 No Min. IA September 21 Sample Event 12 Min. IA Max. IA Max. IA Results Results March 21 Sample Event 11 Min. IA March 21 Sample Event 11 Min. IA Max. IA Max. IA Results Results September 29 Sample Event 1 Min. IA September 29 Sample Event 1 Min. IA Max. IA Max. IA Results Results NOTES: AOC - Area of Concern IAQ - Indoor Air Quality ND - Not Detected * - Not - Concentration J - Estimated Value NJDEP - New Jersey Department of Environmental Protection COPC - Constituent of Potential Concern Max. - Maximum - Subslab Soil Gas EPA - Environmental Protection Agency Min. - Minimum ug/l - micrograms per liter IA - Indoor Air NA - Not Available ug/m 3 - micrograms per cubic meters 1 If a sample event is not listed, indoor air samples were not collected for that event. 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detecte in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 8. 3 Groundwater concentrations taken from the Groundwater AOC 8 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for five of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethen and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-3 and E-4 EPA_18 Summary 1 of 3

188 APPENDIX TABLE E-4 SUMMARY OF INDOOR AIR RESULTS FOR EPA BUILDING 18: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 8 and in IA and/or for EPA Building 18 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Table 1 NJDEP Groundwater Screening Levels 4 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No 14 1 ACETONE 8 19 No BENZENE Yes 2 2 CARBON DISULFIDE ND 71 No 1 73 CHLOROFORM No 2 2 CHLOROMETHANE ND 24 No ETHYLBENZENE No M,P-XYLENES 81 7 No METHYLENE CHLORIDE.56J 53 No 9 4 MTBE No 4 2 O-XYLENE 81 7 No TETRACHLOROETHYLENE ND 1 Yes 3 3 TOLUENE No TRICHLOROETHYLENE 19 1 Yes 3 3 XYLENES (TOTAL) 81 7 No Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 8, but for and/or Detected in IA and/or for EPA Building 18 Most Recent Groundwater Concentration at Historical Maximum 3 Table 1 NJDEP Groundwater Screening Levels 4 COPC 5 Compounds Not Detected or For In Groundwater COPC 5 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE ND 24 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE 1,2-DICHLOROETHANE ND 2 No 2 2 1,3,5-TRIMETHYLBENZENE * NLE No NLE NLE 1,3-BUTADIENE *.1 No 1 1 1,4-DICHLOROBENZENE ND 75 No 3 3 2,2,4-TRIMETHYLPENTANE * NLE No NLE NLE 2-BUTANONE ND 27 No ETHYLTOLUENE * NLE No NLE NLE 4-METHYL-2-PENTANONE ND 88 No CARBON TETRACHLORIDE ND 1 No 3 3 CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No 5 2 CYCLOHEXANE ND 12 No DICHLORODIFLUOROMETHANE ND 1 No HEXANE * NLE No 1 73 N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No 15 1 TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 No 1 73 Min. IA Max. IA Results Min. IA Max. IA Results Min. IA Max. IA Results (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NA NA NA NA March 29 Sample Event 9 March 29 Sample Event 9 Min. IA Max. IA Results September 28 Sample Event 8 September 28 Sample Event 8 Min. IA Max. IA Results June 28 Sample Event 7 June 28 Sample Event 7 Min. IA Max. IA Results August 27 Sample Event 6 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Min. IA August 27 Sample Event 6 Min. IA Max. IA Max. IA Results Results NOTES: AOC - Area of Concern IAQ - Indoor Air Quality ND - Not Detected * - Not - Concentration J - Estimated Value NJDEP - New Jersey Department of Environmental Protectio COPC - Constituent of Potential Concern Max. - Maximum - Subslab Soil Gas EPA - Environmental Protection Agency Min. - Minimum ug/l - micrograms per liter IA - Indoor Air NA - Not Available ug/m 3 - micrograms per cubic meters 1 If a sample event is not listed, indoor air samples were not collected for that event. 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detecte in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 8. 3 Groundwater concentrations taken from the Groundwater AOC 8 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for five of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethen and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-3 and E-4 EPA_18 Summary 2 of 3

189 APPENDIX TABLE E-4 SUMMARY OF INDOOR AIR RESULTS FOR EPA BUILDING 18: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 8 and in IA and/or for EPA Building 18 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Table 1 NJDEP Groundwater Screening Levels 4 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No 14 1 ACETONE 8 19 No BENZENE Yes 2 2 CARBON DISULFIDE ND 71 No 1 73 CHLOROFORM No 2 2 CHLOROMETHANE ND 24 No ETHYLBENZENE No M,P-XYLENES 81 7 No METHYLENE CHLORIDE.56J 53 No 9 4 MTBE No 4 2 O-XYLENE 81 7 No TETRACHLOROETHYLENE ND 1 Yes 3 3 TOLUENE No TRICHLOROETHYLENE 19 1 Yes 3 3 XYLENES (TOTAL) 81 7 No Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 8, but for and/or Detected in IA and/or for EPA Building 18 Most Recent Groundwater Concentration at Historical Maximum 3 Table 1 NJDEP Groundwater Screening Levels 4 COPC 5 Compounds Not Detected or For In Groundwater COPC 5 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE ND 24 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE 1,2-DICHLOROETHANE ND 2 No 2 2 1,3,5-TRIMETHYLBENZENE * NLE No NLE NLE 1,3-BUTADIENE *.1 No 1 1 1,4-DICHLOROBENZENE ND 75 No 3 3 2,2,4-TRIMETHYLPENTANE * NLE No NLE NLE 2-BUTANONE ND 27 No ETHYLTOLUENE * NLE No NLE NLE 4-METHYL-2-PENTANONE ND 88 No CARBON TETRACHLORIDE ND 1 No 3 3 CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No 5 2 CYCLOHEXANE ND 12 No DICHLORODIFLUOROMETHANE ND 1 No HEXANE * NLE No 1 73 N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No 15 1 TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 No 1 73 Min. IA Max. IA Results Min. IA Max. IA Results Min. IA (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NA NA NA NA NA April 27 Sample Event 5 April 27 Sample Event 5 Min. IA Max. IA Results January 27 Sample Event 4 January 27 Sample Event 4 Min. IA Max. IA Results September 26 Sample Event 3 September 26 Sample Event 3 Min. IA Max. IA Max. IA Results Results June 26 Sample Event 2 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Min. IA June 26 Sample Event 2 Min. IA Max. IA Max. IA Results Results January 26 Sample Event 1 Min. IA January 26 Sample Event 1 Min. IA Max. IA Max. IA Results Results NOTES: AOC - Area of Concern IAQ - Indoor Air Quality ND - Not Detected * - Not - Concentration J - Estimated Value NJDEP - New Jersey Department of Environmental Protectio COPC - Constituent of Potential Concern Max. - Maximum - Subslab Soil Gas EPA - Environmental Protection Agency Min. - Minimum ug/l - micrograms per liter IA - Indoor Air NA - Not Available ug/m 3 - micrograms per cubic meters 1 If a sample event is not listed, indoor air samples were not collected for that event. 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detecte in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 8. 3 Groundwater concentrations taken from the Groundwater AOC 8 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for five of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethen and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-3 and E-4 EPA_18 Summary 3 of 3

190 APPENDIX TABLE E-5 SUMMARY OF SUBSLAB SOIL GAS RESULTS FOR EPA BUILDING 2: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 8 and in IA and/or for EPA Building 2 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 Samples February 211 September 21 March 21 December 29 September 29 Sample Event 2 Sample Event 19 Sample Event 18 Sample Event 17 Sample Event 16 Min. Max. Samples (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ACETONE 8 19 No BENZENE Yes CARBON DISULFIDE ND 71 No CHLOROFORM No CHLOROMETHANE ND 24 No CIS-1,2-DICHLOROETHENE No ETHYLBENZENE No M,P-XYLENES 81 7 No METHYLENE CHLORIDE.56J 53 No MTBE No O-XYLENE 81 7 No TETRACHLOROETHYLENE ND 1 Yes TOLUENE No TRANS-1,2-DICHLOROETHENE.76J 3 No TRICHLOROETHYLENE 19 1 Yes XYLENES (TOTAL) 81 7 No NA NA NA Min. Max. Samples Min. Max. Samples Min. Max. Samples Min. Max. Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 8, but for and/or Detected in IA and/or for EPA Building 2 Compounds Not Detected or For In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 Samples February 211 Sample Event 2 Min. Max. Samples (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE ND 24 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE ,3,5-TRIMETHYLBENZENE * NLE No NLE NLE ,4-DICHLOROBENZENE ND 75 No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE BUTANONE ND 27 No ETHYLTOLUENE * NLE No NLE NLE METHYL-2-PENTANONE ND 88 No CARBON TETRACHLORIDE ND 1 No CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No CYCLOHEXANE ND 12 No DICHLORODIFLUOROMETHANE ND 1 No HEXACHLOROBUTADIENE ND 1 No HEXANE * NLE No N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 N September 21 Sample Event 19 Min. Max. Samples March 21 Sample Event 18 Min. Max. Samples December 29 Sample Event 17 Min. Max. Samples September 29 Sample Event 16 Min. Max. NOTES: AOC - Area of Concern IAQ - Indoor Air Quality ND - Not Detected - Concentration J - Estimated Value - Subslab Soil Gas COPC - Constituent of Potential Concern Max. - Maximum ug/l - micrograms per liter EPA - Environmental Protection Agency Min. - Minimum ug/m 3 - micrograms per cubic meters IA - Indoor Air NA - Not Available * - Not NJDEP - New Jersey Department of Environmental Protection 1 If a sample event is not listed, subslab soil gas samples were not collected for that even 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detec in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 8. 3 Groundwater concentrations taken from the Groundwater AOC 8 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for five of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethe and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-5 and E-6 EPA_2 Summary 1 of 4

191 APPENDIX TABLE E-5 SUMMARY OF SUBSLAB SOIL GAS RESULTS FOR EPA BUILDING 2: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 8 and in IA and/or for EPA Building 2 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ACETONE 8 19 No BENZENE Yes CARBON DISULFIDE ND 71 No CHLOROFORM No CHLOROMETHANE ND 24 No CIS-1,2-DICHLOROETHENE No ETHYLBENZENE No M,P-XYLENES 81 7 No METHYLENE CHLORIDE.56J 53 No MTBE No O-XYLENE 81 7 No TETRACHLOROETHYLENE ND 1 Yes TOLUENE No TRANS-1,2-DICHLOROETHENE.76J 3 No TRICHLOROETHYLENE 19 1 Yes XYLENES (TOTAL) 81 7 No Samples May 29 Sample Event 15 Min. Max. Samples March 29 Sample Event 14 Min. Max. Samples December 28 October 28 June 28 Sample Event 13 Sample Event 12 Sample Event 11 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NA NA NA NA NA Min. Max. Samples Min. Max. Samples Min. Max. Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 8, but for and/or Detected in IA and/or for EPA Building 2 Compounds Not Detected or For In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE ND 24 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE 1,3,5-TRIMETHYLBENZENE * NLE No NLE NLE 1,4-DICHLOROBENZENE ND 75 No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE 2-BUTANONE ND 27 No ETHYLTOLUENE * NLE No NLE NLE 4-METHYL-2-PENTANONE ND 88 No CARBON TETRACHLORIDE ND 1 No CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No CYCLOHEXANE ND 12 No DICHLORODIFLUOROMETHANE ND 1 No HEXACHLOROBUTADIENE ND 1 No HEXANE * NLE No N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 N Samples May 29 Sample Event 15 Min. Max. Samples March 29 Sample Event 14 Min. Max. Samples December 28 Sample Event 13 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Min. Max. Samples October 28 Sample Event 12 Min. Max. Samples June 28 Sample Event 11 Min. Max. NOTES: AOC - Area of Concern IAQ - Indoor Air Quality ND - Not Detected - Concentration J - Estimated Value - Subslab Soil Gas COPC - Constituent of Potential Concern Max. - Maximum ug/l - micrograms per liter EPA - Environmental Protection Agency Min. - Minimum ug/m 3 - micrograms per cubic meters IA - Indoor Air NA - Not Available * - Not NJDEP - New Jersey Department of Environmental Protection 1 If a sample event is not listed, subslab soil gas samples were not collected for that even 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detec in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 8. 3 Groundwater concentrations taken from the Groundwater AOC 8 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for five of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethe and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-5 and E-6 EPA_2 Summary 2 of 4

192 APPENDIX TABLE E-5 SUMMARY OF SUBSLAB SOIL GAS RESULTS FOR EPA BUILDING 2: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 8 and in IA and/or for EPA Building 2 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ACETONE 8 19 No BENZENE Yes CARBON DISULFIDE ND 71 No CHLOROFORM No CHLOROMETHANE ND 24 No CIS-1,2-DICHLOROETHENE No ETHYLBENZENE No M,P-XYLENES 81 7 No METHYLENE CHLORIDE.56J 53 No MTBE No O-XYLENE 81 7 No TETRACHLOROETHYLENE ND 1 Yes TOLUENE No TRANS-1,2-DICHLOROETHENE.76J 3 No TRICHLOROETHYLENE 19 1 Yes XYLENES (TOTAL) 81 7 No Samples November 27 Sample Event 1 Min. Max. Samples August 27 March 27 January 27 October 26 Sample Event 9 Sample Event 8 Sample Event 7 Sample Event 6 Min. Max. Samples (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NA NA NA NA NA Min. Max. Samples Min. Max. Samples Min. Max. Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 8, but for and/or Detected in IA and/or for EPA Building 2 Compounds Not Detected or For In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE ND 24 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE 1,3,5-TRIMETHYLBENZENE * NLE No NLE NLE 1,4-DICHLOROBENZENE ND 75 No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE 2-BUTANONE ND 27 No ETHYLTOLUENE * NLE No NLE NLE 4-METHYL-2-PENTANONE ND 88 No CARBON TETRACHLORIDE ND 1 No CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No CYCLOHEXANE ND 12 No DICHLORODIFLUOROMETHANE ND 1 No HEXACHLOROBUTADIENE ND 1 No HEXANE * NLE No N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 N Samples November 27 Sample Event 1 Min. Max. Samples August 27 Sample Event 9 Min. Max. Samples March 27 Sample Event 8 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Min. Max. Samples January 27 Sample Event 7 Min. Max. Samples October 26 Sample Event 6 Min. Max. NOTES: AOC - Area of Concern IAQ - Indoor Air Quality ND - Not Detected - Concentration J - Estimated Value - Subslab Soil Gas COPC - Constituent of Potential Concern Max. - Maximum ug/l - micrograms per liter EPA - Environmental Protection Agency Min. - Minimum ug/m 3 - micrograms per cubic meters IA - Indoor Air NA - Not Available * - Not NJDEP - New Jersey Department of Environmental Protection 1 If a sample event is not listed, subslab soil gas samples were not collected for that even 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detec in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 8. 3 Groundwater concentrations taken from the Groundwater AOC 8 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for five of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethe and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-5 and E-6 EPA_2 Summary 3 of 4

193 APPENDIX TABLE E-5 SUMMARY OF SUBSLAB SOIL GAS RESULTS FOR EPA BUILDING 2: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 8 and in IA and/or for EPA Building 2 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ACETONE 8 19 No BENZENE Yes CARBON DISULFIDE ND 71 No CHLOROFORM No CHLOROMETHANE ND 24 No CIS-1,2-DICHLOROETHENE No ETHYLBENZENE No M,P-XYLENES 81 7 No METHYLENE CHLORIDE.56J 53 No MTBE No O-XYLENE 81 7 No TETRACHLOROETHYLENE ND 1 Yes TOLUENE No TRANS-1,2-DICHLOROETHENE.76J 3 No TRICHLOROETHYLENE 19 1 Yes XYLENES (TOTAL) 81 7 No Samples September 26 Sample Event 5 Min. Max. Samples June 26 Sample Event 4 Min. Max. Samples March 26 Sample Event 3 Min. Max. Samples January 26 Sample Event 2 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NA NA NA NA NA Min. Max. Samples January 25 Sample Event 1 Min. Max. Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 8, but for and/or Detected in IA and/or for EPA Building 2 Compounds Not Detected or For In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE ND 24 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE 1,3,5-TRIMETHYLBENZENE * NLE No NLE NLE 1,4-DICHLOROBENZENE ND 75 No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE 2-BUTANONE ND 27 No ETHYLTOLUENE * NLE No NLE NLE 4-METHYL-2-PENTANONE ND 88 No CARBON TETRACHLORIDE ND 1 No CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No CYCLOHEXANE ND 12 No DICHLORODIFLUOROMETHANE ND 1 No HEXACHLOROBUTADIENE ND 1 No HEXANE * NLE No N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 N Samples September 26 Sample Event 5 Min. Max. Samples June 26 Sample Event 4 Min. Max. Samples March 26 Sample Event 3 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Min. Max. Samples January 26 Sample Event 2 Min. Max. Samples January 25 Sample Event 1 Min. Max. NOTES: AOC - Area of Concern IAQ - Indoor Air Quality ND - Not Detected - Concentration J - Estimated Value - Subslab Soil Gas COPC - Constituent of Potential Concern Max. - Maximum ug/l - micrograms per liter EPA - Environmental Protection Agency Min. - Minimum ug/m 3 - micrograms per cubic meters IA - Indoor Air NA - Not Available * - Not NJDEP - New Jersey Department of Environmental Protection 1 If a sample event is not listed, subslab soil gas samples were not collected for that even 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detec in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 8. 3 Groundwater concentrations taken from the Groundwater AOC 8 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for five of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethe and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-5 and E-6 EPA_2 Summary 4 of 4

194 APPENDIX TABLE E-6 SUMMARY OF INDOOR AIR RESULTS FOR EPA BUILDING 2: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 8 and in IA and/or for EPA Building 2 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 February 211 Sample Event 19 Min. IA Max. IA Results (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ACETONE 8 19 No BENZENE Yes CARBON DISULFIDE ND 71 No CHLOROFORM No CHLOROMETHANE ND 24 No CIS-1,2-DICHLOROETHENE No ETHYLBENZENE No M,P-XYLENES 81 7 No METHYLENE CHLORIDE.56J 53 No MTBE No O-XYLENE 81 7 No TETRACHLOROETHYLENE ND 1 Yes TOLUENE No TRANS-1,2-DICHLOROETHENE.76J 3 No TRICHLOROETHYLENE 19 1 Yes XYLENES (TOTAL) 81 7 No NA NA September 21 Sample Event 18 Min. IA Max. IA Results March 21 Sample Event 17 Min. IA Max. IA December 29 Sample Event 16 Min. IA Max. IA Results Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 8, but for and/or Detected in IA and/or for EPA Building 2 Compounds Not Detected or For In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 February 211 Sample Event 19 Min. IA Max. IA Results (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE ND 24 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE ,3,5-TRIMETHYLBENZENE * NLE No NLE NLE ,4-DICHLOROBENZENE ND 75 No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE BUTANONE ND 27 No ETHYLTOLUENE * NLE No NLE NLE METHYL-2-PENTANONE ND 88 No CARBON TETRACHLORIDE ND 1 No CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No CYCLOHEXANE ND 12 No DICHLORODIFLUOROMETHANE ND 1 No HEXACHLOROBUTADIENE ND 1 No HEXANE * NLE No N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 N September 21 Sample Event 18 Min. IA Max. IA Results March 21 Sample Event 17 Min. IA Max. IA December 29 Sample Event 16 Min. IA Max. IA Results NOTES: AOC - Area of Concern IAQ - Indoor Air Quality * - Not - Concentration J - Estimated Value ND - Not Detected COPC - Constituent of Potential Concern Max. - Maximum - Subslab Soil Gas EPA - Environmental Protection Agency Min. - Minimum ug/l - micrograms per liter IA - Indoor Air NA - Not Available ug/m 3 - micrograms per cubic meters NJDEP - New Jersey Department of Environmental Protection 1 If a sample event is not listed, indoor air samples were not collected for that event. 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detecte in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 8. 3 Groundwater concentrations taken from the Groundwater AOC 8 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for five of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethen and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-5 and E-6 EPA_2 Summary 1 of 5

195 APPENDIX TABLE E-6 SUMMARY OF INDOOR AIR RESULTS FOR EPA BUILDING 2: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 8 and in IA and/or for EPA Building 2 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No 14 1 ACETONE 8 19 No BENZENE Yes 2 2 CARBON DISULFIDE ND 71 No 1 73 CHLOROFORM No 2 2 CHLOROMETHANE ND 24 No CIS-1,2-DICHLOROETHENE No ETHYLBENZENE No M,P-XYLENES 81 7 No METHYLENE CHLORIDE.56J 53 No 9 4 MTBE No 4 2 O-XYLENE 81 7 No TETRACHLOROETHYLENE ND 1 Yes 3 3 TOLUENE No TRANS-1,2-DICHLOROETHENE.76J 3 No 1 73 TRICHLOROETHYLENE 19 1 Yes 3 3 XYLENES (TOTAL) 81 7 No September 29 Sample Event 15 Min. IA Max. IA Results May 29 Sample Event 14 Min. IA Max. IA Results (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NA NA NA NA March 29 Sample Event 13 Min. IA Max. IA December 28 Sample Event 12 Min. IA Max. IA Results Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 8, but for and/or Detected in IA and/or for EPA Building 2 Compounds Not Detected or For In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE ND 24 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE 1,3,5-TRIMETHYLBENZENE * NLE No NLE NLE 1,4-DICHLOROBENZENE ND 75 No 3 3 2,2,4-TRIMETHYLPENTANE * NLE No NLE NLE 2-BUTANONE ND 27 No ETHYLTOLUENE * NLE No NLE NLE 4-METHYL-2-PENTANONE ND 88 No CARBON TETRACHLORIDE ND 1 No 3 3 CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No 5 2 CYCLOHEXANE ND 12 No DICHLORODIFLUOROMETHANE ND 1 No HEXACHLOROBUTADIENE ND 1 No 5 5 HEXANE * NLE No 1 73 N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No 15 1 TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 N 1 73 September 29 Sample Event 15 Min. IA Max. IA Results May 29 Sample Event 14 Min. IA Max. IA Results (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) March 29 Sample Event 13 Min. IA Max. IA December 28 Sample Event 12 Min. IA Max. IA Results NOTES: AOC - Area of Concern IAQ - Indoor Air Quality * - Not - Concentration J - Estimated Value ND - Not Detected COPC - Constituent of Potential Concern Max. - Maximum - Subslab Soil Gas EPA - Environmental Protection Agency Min. - Minimum ug/l - micrograms per liter IA - Indoor Air NA - Not Available ug/m 3 - micrograms per cubic meters NJDEP - New Jersey Department of Environmental Protection 1 If a sample event is not listed, indoor air samples were not collected for that event. 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detecte in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 8. 3 Groundwater concentrations taken from the Groundwater AOC 8 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for five of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethen and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-5 and E-6 EPA_2 Summary 2 of 5

196 APPENDIX TABLE E-6 SUMMARY OF INDOOR AIR RESULTS FOR EPA BUILDING 2: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 8 and in IA and/or for EPA Building 2 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No 14 1 ACETONE 8 19 No BENZENE Yes 2 2 CARBON DISULFIDE ND 71 No 1 73 CHLOROFORM No 2 2 CHLOROMETHANE ND 24 No CIS-1,2-DICHLOROETHENE No ETHYLBENZENE No M,P-XYLENES 81 7 No METHYLENE CHLORIDE.56J 53 No 9 4 MTBE No 4 2 O-XYLENE 81 7 No TETRACHLOROETHYLENE ND 1 Yes 3 3 TOLUENE No TRANS-1,2-DICHLOROETHENE.76J 3 No 1 73 TRICHLOROETHYLENE 19 1 Yes 3 3 XYLENES (TOTAL) 81 7 No June 28 Sample Event 11 Min. IA Max. IA Results June 28 Sample Event 1 Min. IA Max. IA Results (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NA NA NA NA November 27 Sample Event 9 Min. IA Max. IA Results August 27 Sample Event 8 Min. IA Max. IA Results Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 8, but for and/or Detected in IA and/or for EPA Building 2 Compounds Not Detected or For In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE ND 24 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE 1,3,5-TRIMETHYLBENZENE * NLE No NLE NLE 1,4-DICHLOROBENZENE ND 75 No 3 3 2,2,4-TRIMETHYLPENTANE * NLE No NLE NLE 2-BUTANONE ND 27 No ETHYLTOLUENE * NLE No NLE NLE 4-METHYL-2-PENTANONE ND 88 No CARBON TETRACHLORIDE ND 1 No 3 3 CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No 5 2 CYCLOHEXANE ND 12 No DICHLORODIFLUOROMETHANE ND 1 No HEXACHLOROBUTADIENE ND 1 No 5 5 HEXANE * NLE No 1 73 N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No 15 1 TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 N 1 73 June 28 Sample Event 11 Min. IA Max. IA Results June 28 Sample Event 1 Min. IA Max. IA Results November 27 Sample Event 9 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Min. IA Max. IA Results August 27 Sample Event 8 Min. IA Max. IA Results NOTES: AOC - Area of Concern IAQ - Indoor Air Quality * - Not - Concentration J - Estimated Value ND - Not Detected COPC - Constituent of Potential Concern Max. - Maximum - Subslab Soil Gas EPA - Environmental Protection Agency Min. - Minimum ug/l - micrograms per liter IA - Indoor Air NA - Not Available ug/m 3 - micrograms per cubic meters NJDEP - New Jersey Department of Environmental Protection 1 If a sample event is not listed, indoor air samples were not collected for that event. 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detecte in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 8. 3 Groundwater concentrations taken from the Groundwater AOC 8 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for five of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethen and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-5 and E-6 EPA_2 Summary 3 of 5

197 APPENDIX TABLE E-6 SUMMARY OF INDOOR AIR RESULTS FOR EPA BUILDING 2: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 8 and in IA and/or for EPA Building 2 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No 14 1 ACETONE 8 19 No BENZENE Yes 2 2 CARBON DISULFIDE ND 71 No 1 73 CHLOROFORM No 2 2 CHLOROMETHANE ND 24 No CIS-1,2-DICHLOROETHENE No ETHYLBENZENE No M,P-XYLENES 81 7 No METHYLENE CHLORIDE.56J 53 No 9 4 MTBE No 4 2 O-XYLENE 81 7 No TETRACHLOROETHYLENE ND 1 Yes 3 3 TOLUENE No TRANS-1,2-DICHLOROETHENE.76J 3 No 1 73 TRICHLOROETHYLENE 19 1 Yes 3 3 XYLENES (TOTAL) 81 7 No March 27 Sample Event 7 Min. IA Max. IA Results January 27 Sample Event 6 Min. IA Max. IA Results (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NA NA NA NA October 26 Sample Event 5 Min. IA Max. IA Results September 26 Sample Event 4 Min. IA Max. IA Results Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 8, but for and/or Detected in IA and/or for EPA Building 2 Compounds Not Detected or For In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE ND 24 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE 1,3,5-TRIMETHYLBENZENE * NLE No NLE NLE 1,4-DICHLOROBENZENE ND 75 No 3 3 2,2,4-TRIMETHYLPENTANE * NLE No NLE NLE 2-BUTANONE ND 27 No ETHYLTOLUENE * NLE No NLE NLE 4-METHYL-2-PENTANONE ND 88 No CARBON TETRACHLORIDE ND 1 No 3 3 CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No 5 2 CYCLOHEXANE ND 12 No DICHLORODIFLUOROMETHANE ND 1 No HEXACHLOROBUTADIENE ND 1 No 5 5 HEXANE * NLE No 1 73 N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No 15 1 TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 N 1 73 March 27 Sample Event 7 Min. IA Max. IA Results January 27 Sample Event 6 Min. IA Max. IA Results October 26 Sample Event 5 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Min. IA Max. IA Results September 26 Sample Event 4 Min. IA Max. IA Results NOTES: AOC - Area of Concern IAQ - Indoor Air Quality * - Not - Concentration J - Estimated Value ND - Not Detected COPC - Constituent of Potential Concern Max. - Maximum - Subslab Soil Gas EPA - Environmental Protection Agency Min. - Minimum ug/l - micrograms per liter IA - Indoor Air NA - Not Available ug/m 3 - micrograms per cubic meters NJDEP - New Jersey Department of Environmental Protection 1 If a sample event is not listed, indoor air samples were not collected for that event. 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detecte in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 8. 3 Groundwater concentrations taken from the Groundwater AOC 8 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for five of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethen and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-5 and E-6 EPA_2 Summary 4 of 5

198 APPENDIX TABLE E-6 SUMMARY OF INDOOR AIR RESULTS FOR EPA BUILDING 2: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 8 and in IA and/or for EPA Building 2 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No 14 1 ACETONE 8 19 No BENZENE Yes 2 2 CARBON DISULFIDE ND 71 No 1 73 CHLOROFORM No 2 2 CHLOROMETHANE ND 24 No CIS-1,2-DICHLOROETHENE No ETHYLBENZENE No M,P-XYLENES 81 7 No METHYLENE CHLORIDE.56J 53 No 9 4 MTBE No 4 2 O-XYLENE 81 7 No TETRACHLOROETHYLENE ND 1 Yes 3 3 TOLUENE No TRANS-1,2-DICHLOROETHENE.76J 3 No 1 73 TRICHLOROETHYLENE 19 1 Yes 3 3 XYLENES (TOTAL) 81 7 No June 26 March 26 Sample Event 3 Sample Event 2 Min. IA Max. IA Results Min. IA Max. IA Results January 26 Sample Event 1 Min. IA Max. IA Results (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NA NA NA Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 8, but for and/or Detected in IA and/or for EPA Building 2 Compounds Not Detected or For In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE ND 24 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE 1,3,5-TRIMETHYLBENZENE * NLE No NLE NLE 1,4-DICHLOROBENZENE ND 75 No 3 3 2,2,4-TRIMETHYLPENTANE * NLE No NLE NLE 2-BUTANONE ND 27 No ETHYLTOLUENE * NLE No NLE NLE 4-METHYL-2-PENTANONE ND 88 No CARBON TETRACHLORIDE ND 1 No 3 3 CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No 5 2 CYCLOHEXANE ND 12 No DICHLORODIFLUOROMETHANE ND 1 No HEXACHLOROBUTADIENE ND 1 No 5 5 HEXANE * NLE No 1 73 N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No 15 1 TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 N 1 73 June 26 Sample Event 3 Min. IA Max. IA March 26 Sample Event 2 Min. IA Max. IA Results January 26 Sample Event 1 Min. IA Max. IA Results (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NOTES: AOC - Area of Concern IAQ - Indoor Air Quality * - Not - Concentration J - Estimated Value ND - Not Detected COPC - Constituent of Potential Concern Max. - Maximum - Subslab Soil Gas EPA - Environmental Protection Agency Min. - Minimum ug/l - micrograms per liter IA - Indoor Air NA - Not Available ug/m 3 - micrograms per cubic meters NJDEP - New Jersey Department of Environmental Protection 1 If a sample event is not listed, indoor air samples were not collected for that event. 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detecte in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 8. 3 Groundwater concentrations taken from the Groundwater AOC 8 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for five of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethen and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-5 and E-6 EPA_2 Summary 5 of 5

199 APPENDIX TABLE E-7 SUMMARY OF SUBSLAB SOIL GAS RESULTS FOR EPA BUILDING 25: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 8 and in IA and/or for EPA Building 25 Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ,1-DICHLOROETHENE No ACETONE 8 19 No BENZENE Yes CARBON DISULFIDE ND 71 No CHLOROFORM No CHLOROMETHANE ND 24 No ETHYLBENZENE No M,P-XYLENES 81 7 No METHYLENE CHLORIDE.56J 53 No MTBE No O-XYLENE 81 7 No TETRACHLOROETHYLENE ND 1 Yes TOLUENE No TRANS-1,2-DICHLOROETHENE.76J 3 No TRICHLOROETHYLENE 19 1 Yes XYLENES (TOTAL) 81 7 No Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 8, but for and/or Detected in IA and/or for EPA Building 25 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Compounds Not Detected or For In Groundwater COPC 5 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 Samples Samples February 211 Sample Event 15 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE ND 24 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE ,2-DICHLOROBENZENE ND 2 No ,2-DICHLOROETHANE ND 2 No ,3,5-TRIMETHYLBENZENE * NLE No NLE NLE ,3-BUTADIENE *.1 No ,4-DICHLOROBENZENE ND 75 No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE BUTANONE ND 27 No ETHYLTOLUENE * NLE No NLE NLE METHYL-2-PENTANONE ND 88 No CARBON TETRACHLORIDE ND 1 No CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No CYCLOHEXANE ND 12 No DICHLORODIFLUOROMETHANE ND 1 No HEXACHLOROBUTADIENE ND 1 No HEXANE * NLE No N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 No Min. Min. Max. Max. Samples September 21 Sample Event 14 Min. Min. Max. Max. Samples March 21 Sample Event 13 Min. Min. Max. Max. Samples Sepetmber 29 Sample Event 12 February 211 September 21 March 21 Sepetmber 29 Sample Event 15 Sample Event 14 Sample Event 13 Sample Event 12 Samples Samples Samples Min. Min. Max. Max. NOTES: AOC - Area of Concern J - Estimated Value NJDEP - New Jersey Department of Environmental Protection - Concentration Max. - Maximum - Subslab Soil Gas COPC - Constituent of Potential Concern Min. - Minimum ug/l - micrograms per liter IA - Indoor Air NA - Not Available ug/m 3 - micrograms per cubic meters IAQ - Indoor Air Quality ND - Not Detected * - Not 1 If a sample event is not listed, subslab soil gas samples were not collected for that event 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detecte in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 8. 3 Groundwater concentrations taken from the Groundwater AOC 8 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for five of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethen and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-7 and E-8 EPA_25 Summary 1 of 4

200 APPENDIX TABLE E-7 SUMMARY OF SUBSLAB SOIL GAS RESULTS FOR EPA BUILDING 25: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 8 and in IA and/or for EPA Building 25 Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ,1-DICHLOROETHENE No ACETONE 8 19 No BENZENE Yes CARBON DISULFIDE ND 71 No CHLOROFORM No CHLOROMETHANE ND 24 No ETHYLBENZENE No M,P-XYLENES 81 7 No METHYLENE CHLORIDE.56J 53 No MTBE No O-XYLENE 81 7 No TETRACHLOROETHYLENE ND 1 Yes TOLUENE No TRANS-1,2-DICHLOROETHENE.76J 3 No TRICHLOROETHYLENE 19 1 Yes XYLENES (TOTAL) 81 7 No Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 8, but for and/or Detected in IA and/or for EPA Building 25 Compounds Detected In Groundwater Compounds Not Detected or For In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 COPC 5 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE ND 24 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE 1,2-DICHLOROBENZENE ND 2 No ,2-DICHLOROETHANE ND 2 No 2 2 1,3,5-TRIMETHYLBENZENE * NLE No NLE NLE 1,3-BUTADIENE *.1 No ,4-DICHLOROBENZENE ND 75 No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE 2-BUTANONE ND 27 No ETHYLTOLUENE * NLE No NLE NLE 4-METHYL-2-PENTANONE ND 88 No CARBON TETRACHLORIDE ND 1 No CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No CYCLOHEXANE ND 12 No DICHLORODIFLUOROMETHANE ND 1 No HEXACHLOROBUTADIENE ND 1 No HEXANE * NLE No N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 No Samples Min. Max. Min. Max. Min. Max. Min. (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Samples March 29 Sample Event 11 March 29 Sample Event 11 Min. Max. Samples Samples September 28 Sample Event 1 September 28 Sample Event 1 Min. Max. Samples Samples June 28 Sample Event 9 June 28 Sample Event 9 Min. Max. Samples Samples November 27 Sample Event 8 November 27 Sample Event 8 Min. (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Max. Max. NOTES: AOC - Area of Concern J - Estimated Value NJDEP - New Jersey Department of Environmental Protection - Concentration Max. - Maximum - Subslab Soil Gas COPC - Constituent of Potential Concern Min. - Minimum ug/l - micrograms per liter IA - Indoor Air NA - Not Available ug/m 3 - micrograms per cubic meters IAQ - Indoor Air Quality ND - Not Detected * - Not 1 If a sample event is not listed, subslab soil gas samples were not collected for that event 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detecte in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 8. 3 Groundwater concentrations taken from the Groundwater AOC 8 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for five of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethen and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-7 and E-8 EPA_25 Summary 2 of 4

201 APPENDIX TABLE E-7 SUMMARY OF SUBSLAB SOIL GAS RESULTS FOR EPA BUILDING 25: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 8 and in IA and/or for EPA Building 25 Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ,1-DICHLOROETHENE No ACETONE 8 19 No BENZENE Yes CARBON DISULFIDE ND 71 No CHLOROFORM No CHLOROMETHANE ND 24 No ETHYLBENZENE No M,P-XYLENES 81 7 No METHYLENE CHLORIDE.56J 53 No MTBE No O-XYLENE 81 7 No TETRACHLOROETHYLENE ND 1 Yes TOLUENE No TRANS-1,2-DICHLOROETHENE.76J 3 No TRICHLOROETHYLENE 19 1 Yes XYLENES (TOTAL) 81 7 No Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 8, but for and/or Detected in IA and/or for EPA Building 25 Compounds Detected In Groundwater Compounds Not Detected or For In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 COPC 5 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE ND 24 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE 1,2-DICHLOROBENZENE ND 2 No ,2-DICHLOROETHANE ND 2 No 2 2 1,3,5-TRIMETHYLBENZENE * NLE No NLE NLE 1,3-BUTADIENE *.1 No ,4-DICHLOROBENZENE ND 75 No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE 2-BUTANONE ND 27 No ETHYLTOLUENE * NLE No NLE NLE 4-METHYL-2-PENTANONE ND 88 No CARBON TETRACHLORIDE ND 1 No CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No CYCLOHEXANE ND 12 No DICHLORODIFLUOROMETHANE ND 1 No HEXACHLOROBUTADIENE ND 1 No HEXANE * NLE No N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 No Samples Min. Max. Min. Max. Min. Max. Min. (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Samples August 27 April 27 January 27 September 26 Sample Event 7 Sample Event 5 Sample Event 5 Sample Event 4 Min. Max. Samples Min. Max. Samples Min. Max. Samples August 27 April 27 January 27 September 26 Sample Event 7 Sample Event 5 Sample Event 5 Sample Event 4 Samples Samples Samples Min. (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Max. Max. NOTES: AOC - Area of Concern J - Estimated Value NJDEP - New Jersey Department of Environmental Protection - Concentration Max. - Maximum - Subslab Soil Gas COPC - Constituent of Potential Concern Min. - Minimum ug/l - micrograms per liter IA - Indoor Air NA - Not Available ug/m 3 - micrograms per cubic meters IAQ - Indoor Air Quality ND - Not Detected * - Not 1 If a sample event is not listed, subslab soil gas samples were not collected for that event 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detecte in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 8. 3 Groundwater concentrations taken from the Groundwater AOC 8 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for five of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethen and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-7 and E-8 EPA_25 Summary 3 of 4

202 APPENDIX TABLE E-7 SUMMARY OF SUBSLAB SOIL GAS RESULTS FOR EPA BUILDING 25: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 8 and in IA and/or for EPA Building 25 Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ,1-DICHLOROETHENE No ACETONE 8 19 No BENZENE Yes CARBON DISULFIDE ND 71 No CHLOROFORM No CHLOROMETHANE ND 24 No ETHYLBENZENE No M,P-XYLENES 81 7 No METHYLENE CHLORIDE.56J 53 No MTBE No O-XYLENE 81 7 No TETRACHLOROETHYLENE ND 1 Yes TOLUENE No TRANS-1,2-DICHLOROETHENE.76J 3 No TRICHLOROETHYLENE 19 1 Yes XYLENES (TOTAL) 81 7 No Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 8, but for and/or Detected in IA and/or for EPA Building 25 Compounds Detected In Groundwater Compounds Not Detected or For In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 COPC 5 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE ND 24 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE 1,2-DICHLOROBENZENE ND 2 No ,2-DICHLOROETHANE ND 2 No 2 2 1,3,5-TRIMETHYLBENZENE * NLE No NLE NLE 1,3-BUTADIENE *.1 No ,4-DICHLOROBENZENE ND 75 No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE 2-BUTANONE ND 27 No ETHYLTOLUENE * NLE No NLE NLE 4-METHYL-2-PENTANONE ND 88 No CARBON TETRACHLORIDE ND 1 No CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No CYCLOHEXANE ND 12 No DICHLORODIFLUOROMETHANE ND 1 No HEXACHLOROBUTADIENE ND 1 No HEXANE * NLE No N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 No Samples Min. Max. Min. Max. Min. Max. (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Samples June 26 Sample Event 3 June 26 Sample Event 3 Min. Max. Samples Samples January 26 Sample Event 2 January 26 Sample Event 2 Min. Max. Samples Samples January 25 Sample Event 1 January 25 Sample Event 1 Min. Max. (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NOTES: AOC - Area of Concern J - Estimated Value NJDEP - New Jersey Department of Environmental Protection - Concentration Max. - Maximum - Subslab Soil Gas COPC - Constituent of Potential Concern Min. - Minimum ug/l - micrograms per liter IA - Indoor Air NA - Not Available ug/m 3 - micrograms per cubic meters IAQ - Indoor Air Quality ND - Not Detected * - Not 1 If a sample event is not listed, subslab soil gas samples were not collected for that event 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detecte in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 8. 3 Groundwater concentrations taken from the Groundwater AOC 8 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for five of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethen and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-7 and E-8 EPA_25 Summary 4 of 4

203 APPENDIX TABLE E-8 SUMMARY OF INDOOR AIR RESULTS FOR EPA BUILDING 25: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 8 and in IA and/or for EPA Building 25 Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 Min. IA Max. IA Results (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ,1-DICHLOROETHENE No ACETONE 8 19 No BENZENE Yes CARBON DISULFIDE ND 71 No CHLOROFORM No CHLOROMETHANE ND 24 No ETHYLBENZENE No M,P-XYLENES 81 7 No METHYLENE CHLORIDE.56J 53 No MTBE No O-XYLENE 81 7 No TETRACHLOROETHYLENE ND 1 Yes TOLUENE No TRANS-1,2-DICHLOROETHENE.76J 3 No TRICHLOROETHYLENE 19 1 Yes XYLENES (TOTAL) 81 7 No NA NA Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 8, but for and/or Detected in IA and/or for EPA Building 25 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 Compounds Not Detected or For In Groundwater COPC 5 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 February 211 Sample Event 14 Min. IA Max. IA Results (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE ND 24 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE ,2-DICHLOROBENZENE ND 2 No ,2-DICHLOROETHANE ND 2 No ,3,5-TRIMETHYLBENZENE * NLE No NLE NLE ,3-BUTADIENE *.1 No ,4-DICHLOROBENZENE ND 75 No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE BUTANONE ND 27 No ETHYLTOLUENE * NLE No NLE NLE METHYL-2-PENTANONE ND 88 No CARBON TETRACHLORIDE ND 1 No CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No CYCLOHEXANE ND 12 No DICHLORODIFLUOROMETHANE ND 1 No HEXACHLOROBUTADIENE ND 1 No HEXANE * NLE No N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 No September 21 Sample Event 13 Min. IA Min. IA Max. IA Max. IA Results Results March 21 Sample Event 12 Min. IA February 211 September 21 March 21 Sample Event 14 Sample Event 13 Sample Event 12 Min. IA Max. IA Max. IA Results Results September 29 Sample Event 11 Min. IA September 29 Sample Event 11 Min. IA Max. IA Max. IA Results Results NOTES: AOC - Area of Concern J - Estimated Value NJDEP - New Jersey Department of Environmental Protection - Concentration Max. - Maximum - Subslab Soil Gas COPC - Constituent of Potential Concern Min. - Minimum ug/l - micrograms per liter IA - Indoor Air NA - Not Available ug/m 3 - micrograms per cubic meters IAQ - Indoor Air Quality ND - Not Detected * - Not 1 If a sample event is not listed, indoor air samples were not collected for that event. 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detecte in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 8. 3 Groundwater concentrations taken from the Groundwater AOC 8 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for five of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethen and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-7 and E-8 EPA_25 Summary 1 of 3

204 APPENDIX TABLE E-8 SUMMARY OF INDOOR AIR RESULTS FOR EPA BUILDING 25: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey March 29 Sample Event 1 September 28 Sample Event 9 June 28 Sample Event 8 November 27 Sample Event 7 August 27 Sample Event 6 April 27 Sample Event 5 Min. IA Max. IA Results Min. IA Max. IA Results Min. IA Max. IA Results Min. IA Max. IA Results Min. IA Max. IA Results Min. IA Max. IA Results (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NA NA NA NA NA NA March 29 Sample Event 1 September 28 Sample Event 9 June 28 Sample Event 8 November 27 Sample Event 7 August 27 Sample Event 6 April 27 Sample Event 5 Min. IA Max. IA Results Min. IA Max. IA Results Min. IA Max. IA Results Min. IA Max. IA Results Min. IA Max. IA Results Min. IA Max. IA Results (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-7 and E-8 EPA_25 Summary 2 of 3

205 APPENDIX TABLE E-8 SUMMARY OF INDOOR AIR RESULTS FOR EPA BUILDING 25: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey January 27 Sample Event 4 September 26 Sample Event 3 June 26 Sample Event 2 January 26 Sample Event 1 Min. IA Max. IA Results Min. IA Max. IA Results Min. IA Max. IA Results Min. IA Max. IA Results (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NA NA NA NA January 27 Sample Event 4 September 26 Sample Event 3 June 26 Sample Event 2 January 26 Sample Event 1 Min. IA Max. IA Results Min. IA Max. IA Results Min. IA Max. IA Results Min. IA Max. IA Results (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-7 and E-8 EPA_25 Summary 3 of 3

206 APPENDIX TABLE E-9 SUMMARY OF SUBSLAB SOIL GAS RESULTS FOR EPA BUILDING 29: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 8 and in IA and/or for EPA Building 29 Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 Min. Max. Min. Max. Min. Max. Min. Max. (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ,1-DICHLOROETHENE No ACETONE 8 19 No BENZENE Yes BROMODICHLOROMETHANE ND 5.69 No CARBON DISULFIDE ND 71 No CHLOROFORM No CHLOROMETHANE ND 24 No CIS-1,2-DICHLOROETHENE No ETHYLBENZENE No M,P-XYLENES 81 NLE No METHYLENE CHLORIDE.56J 53 No MTBE No O-XYLENE 81 NLE No TETRACHLOROETHYLENE ND 1 Yes TOLUENE No TRANS-1,2-DICHLOROETHENE.76J 3 No TRICHLOROETHYLENE 19 1 Yes VINYL CHLORIDE Yes XYLENES (TOTAL) 81 7 No NA NA Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 8, but for and/or Detected in IA and/or for EPA Building 29 Compounds Detected In Groundwater Compounds Not Detected or For In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 COPC 5 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 Samples Samples February 211 Sample Event 12 February 211 Sample Event 12 Min. Max. September 21 March 21 Sepetmber 29 Sample Event 11 Sample Event 1 Sample Event 9 Min. Max. Min. Max. Min. Max. (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE ND 24 No ,1,2-TRICHLOROETHANE ND 5 No ,1-DICHLOROETHANE ND 36 No ,2,4-TRICHLOROBENZENE ND 28 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE ,2-DICHLOROBENZENE ND 59 No ,2-DICHLOROETHANE ND 2 No ,2-DICHLOROTETRAFLUOROETHANE * NLE No NLE NLE ,3,5-TRIMETHYLBENZENE * NLE No NLE NLE ,3-BUTADIENE *.1 No ,3-DICHLOROBENZENE ND 6 No ,4-DICHLOROBENZENE ND 75 No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE BUTANONE ND 27 No ETHYLTOLUENE * NLE No NLE NLE METHYL-2-PENTANONE ND 88 No BROMOMETHANE ND 29 No CARBON TETRACHLORIDE ND 1 No CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No CYCLOHEXANE ND 12 No DICHLORODIFLUOROMETHANE ND 1 No HEXACHLOROBUTADIENE ND 1 No HEXANE * NLE No N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 No Samples Samples September 21 Sample Event 11 Samples Samples March 21 Sample Event 1 Samples Samples Sepetmber 29 Sample Event 9 NOTES: AOC - Area of Concern J - Estimated Value NJDEP - New Jersey Department of Environmental Protection - Concentration Max. - Maximum - Subslab Soil Gas COPC - Constituent of Potential Concern Min. - Minimum ug/l - micrograms per liter IA - Indoor Air NA - Not Available ug/m 3 - micrograms per cubic meters IAQ - Indoor Air Quality ND - Not Detected * - Not 1 If a sample event is not listed, subslab soil gas samples were not collected for that event 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detected in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 8. 3 Groundwater concentrations taken from the Groundwater AOC 8 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for six of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethene and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-9 and E-1 EPA_29 Summary 1 of 3

207 APPENDIX TABLE E-9 SUMMARY OF SUBSLAB SOIL GAS RESULTS FOR EPA BUILDING 29: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 8 and in IA and/or for EPA Building 29 Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ,1-DICHLOROETHENE No ACETONE 8 19 No BENZENE Yes BROMODICHLOROMETHANE ND 5.69 No CARBON DISULFIDE ND 71 No CHLOROFORM No CHLOROMETHANE ND 24 No CIS-1,2-DICHLOROETHENE No ETHYLBENZENE No M,P-XYLENES 81 NLE No METHYLENE CHLORIDE.56J 53 No MTBE No O-XYLENE 81 NLE No TETRACHLOROETHYLENE ND 1 Yes TOLUENE No TRANS-1,2-DICHLOROETHENE.76J 3 No TRICHLOROETHYLENE 19 1 Yes VINYL CHLORIDE Yes XYLENES (TOTAL) 81 7 No Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 8, but for and/or Detected in IA and/or for EPA Building 29 Compounds Detected In Groundwater Compounds Not Detected or For In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 COPC 5 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE ND 24 No ,1,2-TRICHLOROETHANE ND 5 No ,1-DICHLOROETHANE ND 36 No ,2,4-TRICHLOROBENZENE ND 28 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE 1,2-DICHLOROBENZENE ND 59 No ,2-DICHLOROETHANE ND 2 No 2 2 1,2-DICHLOROTETRAFLUOROETHANE * NLE No NLE NLE 1,3,5-TRIMETHYLBENZENE * NLE No NLE NLE 1,3-BUTADIENE *.1 No ,3-DICHLOROBENZENE ND 6 No ,4-DICHLOROBENZENE ND 75 No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE 2-BUTANONE ND 27 No ETHYLTOLUENE * NLE No NLE NLE 4-METHYL-2-PENTANONE ND 88 No BROMOMETHANE ND 29 No CARBON TETRACHLORIDE ND 1 No CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No CYCLOHEXANE ND 12 No DICHLORODIFLUOROMETHANE ND 1 No HEXACHLOROBUTADIENE ND 1 No HEXANE * NLE No N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 No Samples Min. Max. Min. Max. Min. Max. Min. Max. (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NA NA NA NA Samples March 29 Sample Event 8 March 29 Sample Event 8 Min. Max. Samples Samples September 28 Sample Event 7 September 28 Sample Event 7 Min. Max. Samples Samples June 28 Sample Event 6 June 28 Sample Event 6 Min. Max. Samples Samples November 27 Sample Event 5 November 27 Sample Event 5 Min. Max. (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NOTES: AOC - Area of Concern J - Estimated Value NJDEP - New Jersey Department of Environmental Protection - Concentration Max. - Maximum - Subslab Soil Gas COPC - Constituent of Potential Concern Min. - Minimum ug/l - micrograms per liter IA - Indoor Air NA - Not Available ug/m 3 - micrograms per cubic meters IAQ - Indoor Air Quality ND - Not Detected * - Not 1 If a sample event is not listed, subslab soil gas samples were not collected for that event 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detected in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 8. 3 Groundwater concentrations taken from the Groundwater AOC 8 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for six of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethene and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-9 and E-1 EPA_29 Summary 2 of 3

208 APPENDIX TABLE E-9 SUMMARY OF SUBSLAB SOIL GAS RESULTS FOR EPA BUILDING 29: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 8 and in IA and/or for EPA Building 29 Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ,1-DICHLOROETHENE No ACETONE 8 19 No BENZENE Yes BROMODICHLOROMETHANE ND 5.69 No CARBON DISULFIDE ND 71 No CHLOROFORM No CHLOROMETHANE ND 24 No CIS-1,2-DICHLOROETHENE No ETHYLBENZENE No M,P-XYLENES 81 NLE No METHYLENE CHLORIDE.56J 53 No MTBE No O-XYLENE 81 NLE No TETRACHLOROETHYLENE ND 1 Yes TOLUENE No TRANS-1,2-DICHLOROETHENE.76J 3 No TRICHLOROETHYLENE 19 1 Yes VINYL CHLORIDE Yes XYLENES (TOTAL) 81 7 No Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 8, but for and/or Detected in IA and/or for EPA Building 29 Compounds Detected In Groundwater Compounds Not Detected or For In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Groundwater Screening Levels 4 COPC 5 COPC 5 Nonresidential Generic Soil Gas Screening Levels 6 Residential Generic Soil Gas Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE ND 24 No ,1,2-TRICHLOROETHANE ND 5 No ,1-DICHLOROETHANE ND 36 No ,2,4-TRICHLOROBENZENE ND 28 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE 1,2-DICHLOROBENZENE ND 59 No ,2-DICHLOROETHANE ND 2 No 2 2 1,2-DICHLOROTETRAFLUOROETHANE * NLE No NLE NLE 1,3,5-TRIMETHYLBENZENE * NLE No NLE NLE 1,3-BUTADIENE *.1 No ,3-DICHLOROBENZENE ND 6 No ,4-DICHLOROBENZENE ND 75 No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE 2-BUTANONE ND 27 No ETHYLTOLUENE * NLE No NLE NLE 4-METHYL-2-PENTANONE ND 88 No BROMOMETHANE ND 29 No CARBON TETRACHLORIDE ND 1 No CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No CYCLOHEXANE ND 12 No DICHLORODIFLUOROMETHANE ND 1 No HEXACHLOROBUTADIENE ND 1 No HEXANE * NLE No N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 No Samples Min. Max. Min. Max. Min. Max. Min. Max. (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NA NA NA NA Samples August 27 Sample Event 4 August 27 Sample Event 4 Min. Max. Samples Samples April 27 Sample Event 3 April 27 Sample Event 3 Min. Max. Samples Samples January 27 Sample Event 2 January 27 Sample Event 2 Min. Max. Samples Samples January 26 Sample Event 1 January 26 Sample Event 1 Min. Max. (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NOTES: AOC - Area of Concern J - Estimated Value NJDEP - New Jersey Department of Environmental Protection - Concentration Max. - Maximum - Subslab Soil Gas COPC - Constituent of Potential Concern Min. - Minimum ug/l - micrograms per liter IA - Indoor Air NA - Not Available ug/m 3 - micrograms per cubic meters IAQ - Indoor Air Quality ND - Not Detected * - Not 1 If a sample event is not listed, subslab soil gas samples were not collected for that event 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detected in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 8. 3 Groundwater concentrations taken from the Groundwater AOC 8 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for six of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethene and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-9 and E-1 EPA_29 Summary 3 of 3

209 APPENDIX TABLE E-1 SUMMARY OF INDOOR AIR RESULTS FOR EPA BUILDING 29: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 8 and in IA and/or for EPA Building 29 Most Recent Groundwater Concentration at Historical Maximum 3 Table 1 NJDEP Groundwater Screening Levels 4 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 Min. IA Max. IA Results (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ,1-DICHLOROETHENE No ACETONE 8 19 No BENZENE Yes BROMODICHLOROMETHANE ND 5.69 No CARBON DISULFIDE ND 71 No CHLOROFORM No CHLOROMETHANE ND 24 No CIS-1,2-DICHLOROETHENE No ETHYLBENZENE No M,P-XYLENES 81 7 No METHYLENE CHLORIDE.56J 53 No MTBE No O-XYLENE 81 7 No TETRACHLOROETHYLENE ND 1 Yes TOLUENE No TRANS-1,2-DICHLOROETHENE.76J 3 No TRICHLOROETHYLENE 19 1 Yes VINYL CHLORIDE Yes XYLENES (TOTAL) 81 7 No NA NA Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 8, but for and/or Detected in IA and/or for EPA Building 29 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Table 1 NJDEP Groundwater Screening Levels 4 COPC 5 Compounds Not Detected or For In Groundwater COPC 5 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 February 211 Sample Event 12 Min. IA Max. IA Results (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE ND 24 No ,1,2-TRICHLOROETHANE ND 5 No ,1-DICHLOROETHANE ND 36 No ,2,4-TRICHLOROBENZENE ND 28 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE ,2-DICHLOROBENZENE ND 59 No ,2-DICHLOROETHANE ND 2 No ,2-DICHLOROTETRAFLUOROETHANE * NLE No NLE NLE ,3,5-TRIMETHYLBENZENE * NLE No NLE NLE ,3-BUTADIENE *.1 No ,3-DICHLOROBENZENE ND 6 No ,4-DICHLOROBENZENE ND 75 No ,2,4-TRIMETHYLPENTANE * NLE No NLE NLE BUTANONE ND 27 No ETHYLTOLUENE * NLE No NLE NLE METHYL-2-PENTANONE ND 88 No BROMOMETHANE ND 29 No CARBON TETRACHLORIDE ND 1 No CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No CYCLOHEXANE ND 12 No DICHLORODIFLUOROMETHANE ND 1 No HEXACHLOROBUTADIENE ND 1 No HEXANE * NLE No N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 No September 21 Sample Event 11 Min. IA February 211 September 21 Sample Event 12 Sample Event 11 Min. IA Max. IA Max. IA Results Results March 21 Sample Event 1 Min. IA March 21 Sample Event 1 Min. IA Max. IA Max. IA Results Results September 29 Sample Event 9 Min. IA September 29 Sample Event 9 Min. IA Max. IA Max. IA Results Results NOTES: AOC - Area of Concern J - Estimated Value NJDEP - New Jersey Department of Environmental Protection - Concentration Max. - Maximum - Subslab Soil Gas COPC - Constituent of Potential Concern Min. - Minimum ug/l - micrograms per liter IA - Indoor Air NA - Not Available ug/m 3 - micrograms per cubic meters IAQ - Indoor Air Quality ND - Not Detected * - Not 1 If a sample event is not listed, indoor air samples were not collected for that event. 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detected in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 8. 3 Groundwater concentrations taken from the Groundwater AOC 8 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for six of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethene and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-9 and E-1 EPA_29 Summary 1 of 3

210 APPENDIX TABLE E-1 SUMMARY OF INDOOR AIR RESULTS FOR EPA BUILDING 29: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 8 and in IA and/or for EPA Building 29 Most Recent Groundwater Concentration at Historical Maximum 3 Table 1 NJDEP Groundwater Screening Levels 4 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ,1-DICHLOROETHENE No ACETONE 8 19 No BENZENE Yes 2 2 BROMODICHLOROMETHANE ND 5.69 No 3 3 CARBON DISULFIDE ND 71 No 1 73 CHLOROFORM No 2 2 CHLOROMETHANE ND 24 No CIS-1,2-DICHLOROETHENE No ETHYLBENZENE No M,P-XYLENES 81 7 No METHYLENE CHLORIDE.56J 53 No 9 4 MTBE No 4 2 O-XYLENE 81 7 No TETRACHLOROETHYLENE ND 1 Yes 3 3 TOLUENE No TRANS-1,2-DICHLOROETHENE.76J 3 No 1 73 TRICHLOROETHYLENE 19 1 Yes 3 3 VINYL CHLORIDE Yes 1 1 XYLENES (TOTAL) 81 7 No Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 8, but for and/or Detected in IA and/or for EPA Building 29 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Table 1 NJDEP Groundwater Screening Levels 4 COPC 5 Compounds Not Detected or For In Groundwater COPC 5 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE ND 24 No ,1,2-TRICHLOROETHANE ND 5 No 3 3 1,1-DICHLOROETHANE ND 36 No ,2,4-TRICHLOROBENZENE ND 28 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE 1,2-DICHLOROBENZENE ND 59 No ,2-DICHLOROETHANE ND 2 No 2 2 1,2-DICHLOROTETRAFLUOROETHANE * NLE No NLE NLE 1,3,5-TRIMETHYLBENZENE * NLE No NLE NLE 1,3-BUTADIENE *.1 No 1 1 1,3-DICHLOROBENZENE ND 6 No ,4-DICHLOROBENZENE ND 75 No 3 3 2,2,4-TRIMETHYLPENTANE * NLE No NLE NLE 2-BUTANONE ND 27 No ETHYLTOLUENE * NLE No NLE NLE 4-METHYL-2-PENTANONE ND 88 No BROMOMETHANE ND 29 No 7 5 CARBON TETRACHLORIDE ND 1 No 3 3 CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No 5 2 CYCLOHEXANE ND 12 No DICHLORODIFLUOROMETHANE ND 1 No HEXACHLOROBUTADIENE ND 1 No 5 5 HEXANE * NLE No 1 73 N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No 15 1 TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 No 1 73 Min. IA Max. IA Results Min. IA Max. IA Results (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NA NA NA NA March 29 Sample Event 8 March 29 Sample Event 8 Min. IA Max. IA Results September 28 Sample Event 7 September 28 Sample Event 7 Min. IA Max. IA Results June 28 Sample Event 6 (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Min. IA June 28 Sample Event 6 Min. IA Max. IA Max. IA Results Results November 27 Sample Event 5 Min. IA November 27 Sample Event 5 Min. IA Max. IA Max. IA Results Results NOTES: AOC - Area of Concern J - Estimated Value NJDEP - New Jersey Department of Environmental Protection - Concentration Max. - Maximum - Subslab Soil Gas COPC - Constituent of Potential Concern Min. - Minimum ug/l - micrograms per liter IA - Indoor Air NA - Not Available ug/m 3 - micrograms per cubic meters IAQ - Indoor Air Quality ND - Not Detected * - Not 1 If a sample event is not listed, indoor air samples were not collected for that event. 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detected in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 8. 3 Groundwater concentrations taken from the Groundwater AOC 8 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for six of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethene and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-9 and E-1 EPA_29 Summary 2 of 3

211 APPENDIX TABLE E-1 SUMMARY OF INDOOR AIR RESULTS FOR EPA BUILDING 29: GROUNDWATER AOC 8 Indoor Air Quality Report #7 Former Raritan Arsenal, Edison, New Jersey Compound List 2 : Compounds Detected in Groundwater for Groundwater AOC 8 and in IA and/or for EPA Building 29 Most Recent Groundwater Concentration at Historical Maximum 3 Table 1 NJDEP Groundwater Screening Levels 4 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,1-TRICHLOROETHANE No ,1-DICHLOROETHENE No ACETONE 8 19 No BENZENE Yes 2 2 BROMODICHLOROMETHANE ND 5.69 No 3 3 CARBON DISULFIDE ND 71 No 1 73 CHLOROFORM No 2 2 CHLOROMETHANE ND 24 No CIS-1,2-DICHLOROETHENE No ETHYLBENZENE No M,P-XYLENES 81 7 No METHYLENE CHLORIDE.56J 53 No 9 4 MTBE No 4 2 O-XYLENE 81 7 No TETRACHLOROETHYLENE ND 1 Yes 3 3 TOLUENE No TRANS-1,2-DICHLOROETHENE.76J 3 No 1 73 TRICHLOROETHYLENE 19 1 Yes 3 3 VINYL CHLORIDE Yes 1 1 XYLENES (TOTAL) 81 7 No Compound List 2 : Compounds Not Detected and/or for in Groundwater for Groundwater AOC 8, but for and/or Detected in IA and/or for EPA Building 29 Compounds Detected In Groundwater Most Recent Groundwater Concentration at Historical Maximum 3 Table 1 NJDEP Groundwater Screening Levels 4 COPC 5 Compounds Not Detected or For In Groundwater COPC 5 Nonresidential Generic Indoor Air Screening Levels 6 Residential Generic Indoor Air Screening Levels 6 (ug/l) (ug/l) (ug/m 3 ) (ug/m 3 ) 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE ND 24 No ,1,2-TRICHLOROETHANE ND 5 No 3 3 1,1-DICHLOROETHANE ND 36 No ,2,4-TRICHLOROBENZENE ND 28 No ,2,4-TRIMETHYLBENZENE * NLE No NLE NLE 1,2-DICHLOROBENZENE ND 59 No ,2-DICHLOROETHANE ND 2 No 2 2 1,2-DICHLOROTETRAFLUOROETHANE * NLE No NLE NLE 1,3,5-TRIMETHYLBENZENE * NLE No NLE NLE 1,3-BUTADIENE *.1 No 1 1 1,3-DICHLOROBENZENE ND 6 No ,4-DICHLOROBENZENE ND 75 No 3 3 2,2,4-TRIMETHYLPENTANE * NLE No NLE NLE 2-BUTANONE ND 27 No ETHYLTOLUENE * NLE No NLE NLE 4-METHYL-2-PENTANONE ND 88 No BROMOMETHANE ND 29 No 7 5 CARBON TETRACHLORIDE ND 1 No 3 3 CHLOROBENZENE ND 64 No CHLOROETHANE ND 4 No 5 2 CYCLOHEXANE ND 12 No DICHLORODIFLUOROMETHANE ND 1 No HEXACHLOROBUTADIENE ND 1 No 5 5 HEXANE * NLE No 1 73 N-HEPTANE * 3 No NLE NLE STYRENE ND 18 No 15 1 TERT-BUTYL ALCOHOL * NLE No TRICHLOROFLUOROMETHANE ND 2 No 1 73 Min. IA Max. IA Results Min. IA Max. IA Results (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) NA NA NA NA August 27 Sample Event 4 August 27 Sample Event 4 Min. IA Max. IA Results April 27 January 27 June 26 Sample Event 3 Sample Event 2 Sample Event 1 April 27 Sample Event 3 Min. IA Max. IA Results (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) (ug/m 3 ) Min. IA January 27 Sample Event 2 Min. IA Max. IA Max. IA Results Results Min. IA June 26 Sample Event 1 Min. IA Max. IA Max. IA Results Results NOTES: AOC - Area of Concern J - Estimated Value NJDEP - New Jersey Department of Environmental Protection - Concentration Max. - Maximum - Subslab Soil Gas COPC - Constituent of Potential Concern Min. - Minimum ug/l - micrograms per liter IA - Indoor Air NA - Not Available ug/m 3 - micrograms per cubic meters IAQ - Indoor Air Quality ND - Not Detected * - Not 1 If a sample event is not listed, indoor air samples were not collected for that event. 2 Compound lists on this table includes compounds detected in indoor air and/or subslab soil gas for the table specific building. Compounds detected in IAQ samples are divided into two categories: 1) detected in groundwater and 2) not detected in groundwater for Groundwater AOC 8. 3 Groundwater concentrations taken from the Groundwater AOC 8 COPC Table: Table NJDEP Table 1 Groundwater Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by NJDEP dated March COPCs are chemicals that: a) have been detected in groundwater and b) are sufficiently toxic and volatile for vapor intrusion according to Table 1 of NJDEP "Vapor Intrusion Guidance" document issued March NJDEP Table 1 Generic Vapor Intrusion Screening Levels are provided in the "Vapor Intrusion Guidance" document issued by the NJDEP dated March 27. Table 1 is the regulatory screening level used for comparison of the analytical results. 7 Screening levels are unavailable for six of the NJDEP state contract TO-15 Chemicals, per Table 1 of the NJDEP March 27 "Vapor Intrusion Guidance" Document 8 The concentrations of each isomer were added if multiple isomers were present. Total results were compared to the total screening levels. This included cis-1,2-dichloroethene and trans-1,2-dichloroethene, cis-1,3-dichloropropene and trans-1,3-dichloropropene 9 Groundwater concentration listed represents a total xylene concentration, not individual isomers. Shaded cell with concentration text indicates that the detected concentration of the compound for that sample exceeds the most stringent NJDEP Table 1 Screening Level. 6 Bolded concentration text and shaded cell indicates that the detected concentration of the compound for that sample exceeds both the NJDEP Table 1 Residential and Nonresidential Screening Levels. 6 K:\Raritan1\Indoor Air Quality\21 Indoor Air Contract - Baltimore\Raritan IAQ report #7\Draft\Appendix\E - AOC 8 Historic Results Summary\Table E-9 and E-1 EPA_29 Summary 3 of 3

212 Appendix F Building Survey Forms

213 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Jeffrey Lynes Date: 18 April 211 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: Computershare Case #: NA Part I - Occupants Building Address: Fernwood Avenue, Edison, NJ Property Contact: Dila Skrella Owner / Renter / other: Renter Contact s Phone: work Building occupants: Children under age 13: Children age 13-18: Adults: 25 Part II Building Characteristics Building type: Office / industrial Describe building: Masonry block and brick Sensitive population: day care / nursing home / hospital / school / other (specify): NA floors - below grade: floors at or above grade: 1 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / other (specify) Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Gas Back-up Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Is there a whole house fan? No Fernwood 18 April 211 1

214 Septic system? No Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? No active / passive Sub-slab vapor/moisture barrier in place? No Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): N/A Other stationary sources nearby (gas stations, emission stacks, etc.): None Heavy vehicular traffic nearby (or other mobile sources): None Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans None NA Gas-powered equipment None NA Kerosene storage cans None NA Paints / thinners / strippers Janitor closet No Cleaning solvents Janitor closet NA Oven cleaners None NA Carpet / upholstery cleaners Janitor closet NA Other house cleaning products None NA Moth balls None NA Polishes / waxes Janitor closet NA Insecticides None NA Furniture / floor polish Janitor closet No Nail polish / polish remover Used by occupants NA Hairspray Used by occupants NA Cologne / perfume Used by occupants NA Air fresheners Bathroom No Fuel tank (inside building) None NA Wood stove or fireplace None NA New furniture / upholstery None NA New carpeting / flooring None NA Hobbies - glues, paints, etc. None NA Fernwood 18 April 211 2

215 Nature of work conducted: 1.) What is produced or package: Part of the facilty is used to cut paper checks/bills. 2.) What chemicals/materials are used? N/A 3.) Are MSDS sheets available? N/A 4.) Ingredients listed in on-site chemicals: N/A 5.) Chemicals observed on-site: Only maintenance/cleaning chemicals. Part V Miscellaneous Items Do any occupants of the building smoke? Yes How often? Every day Last time someone smoked in the building? N/A Does the building have an attached garage directly connected to living space? no If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? No Do the occupants of the building have their clothes dry cleaned? Yes If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? No If yes, what types of solvents are used? If yes, are their clothes washed at work? No Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Trees sprayed mid-march 211 Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? No If yes, when and where? Part VI Sampling Information Sample Technician: Dyna Krumich Phone number: (732) Sample Source: Indoor Air/Sub-Slab Soil Gas Sampler Type: Stainless Steel Canister (SUMMA) Fernwood 18 April 211 3

216 Analytical Method: TO-15 Cert. Laboratory: Accutest See IAQ Report #7 Table 4-2 for Sample IDs Were Instructions for Occupants followed? Yes If not, describe modifications: See IAQ Report #7 Figure 4-1 for Sample Locations Part VII - Meteorological Conditions See IAQ Report # 7 Appendix A for Meteorological Data Was there significant precipitation within 12 hours of (or during) the sampling event?.33 in. (4/29/11) Average outside temperature on date sampled: 72 F (4/28/11) 63 F (4/29/11) Maximum temperature on date sampled: 8 F Minimum temperature on date sampled: 54 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) Fernwood 18 April 211 4

217 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Dyna Krumich/Kelly Pniewski Date: 15 February 211 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: Celsis Laboratory Group Case #: NA Part I - Occupants Building Address: 165 Fieldcrest Avenue, Edison, NJ Property Contact: Chris Knutsen, Ph.D. Owner / Renter / other: Renter Contact s Phone: work (732) Building occupants: Children under age 13: Children age 13-18: Adults: 45 Part II Building Characteristics Building type: Office / commercial Describe building: Office, laboratory and warehouse Sensitive population: day care / nursing home / hospital / school / other (specify): NA floors - below grade: floors at or above grade: 1 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / other (specify) Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Gas Back-up Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Is there a whole house fan? No 165 Fieldcrest Ave 15 February 211 1

218 Septic system? No Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? No active / passive Sub-slab vapor/moisture barrier in place? No Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): 16 Fieldcrest Avenue, Edison, NJ Other stationary sources nearby (gas stations, emission stacks, etc.): None Heavy vehicular traffic nearby (or other mobile sources): None Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans None NA Gas-powered equipment None NA Kerosene storage cans None NA Paints / thinners / strippers Storage closet No Cleaning solvents None NA Oven cleaners None NA Carpet / upholstery cleaners None NA Other house cleaning products None NA Moth balls None NA Polishes / waxes None NA Insecticides None NA Furniture / floor polish Storage closet No Nail polish / polish remover Used by occupants NA Hairspray Used by occupants NA Cologne / perfume Used by occupants NA Air fresheners Bathroom No Fuel tank (inside building) None NA Wood stove or fireplace None NA New furniture / upholstery None NA New carpeting / flooring None NA Hobbies - glues, paints, etc. None NA 165 Fieldcrest Ave 15 February 211 2

219 Nature of work conducted: 1.) What is produced or package: The laboratory performs independent testing of raw materials for QA/QC purposes., raw materials that are used in health/beauty products, cosmetics, pharmaceuticals, etc. 2.) What chemicals/materials are used? See attached MSDS sheets. 3.) Are MSDS sheets available? Yes 4.) Ingredients listed in on-site chemicals: N/A 5.) Chemicals observed on-site: Only maintenance/cleaning chemicals. Part V Miscellaneous Items Do any occupants of the building smoke? Yes How often? Every day Last time someone smoked in the building? N/A Does the building have an attached garage directly connected to living space? Yes (warehouse door) If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? No Do the occupants of the building have their clothes dry cleaned? No If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? No If yes, what types of solvents are used? If yes, are their clothes washed at work? No Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? No If yes, when and where? Part VI Sampling Information Sample Technician: Dyna Krumich Phone number: (732) Sample Source: Indoor Air/Sub-Slab Soil Gas Sampler Type: Stainless Steel Canister (SUMMA) 165 Fieldcrest Ave 15 February 211 3

220 Analytical Method: TO-15 Cert. Laboratory: Accutest See IAQ Report #7 Table 2-2 for Sample IDs Were Instructions for Occupants followed? Yes If not, describe modifications: See IAQ Report #7 Figure 3-1 for Sample Locations Part VII - Meteorological Conditions See IAQ Report # 7 Appendix A for Meteorological Data Was there significant precipitation within 12 hours of (or during) the sampling event?.4 in. (2/24/11) 1.39 in. (2/25/11) Average outside temperature on date sampled: 34 F (2/24/11) 48 F (2/25/11) Maximum temperature on date sampled: 6 F Minimum temperature on date sampled: 24 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) 165 Fieldcrest Ave 15 February 211 4

221 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Dyna Krumich/Alanna Garrison Date: 14 September 21 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: Celsis Laboratory Group Case #: NA Part I - Occupants Building Address: 165 Fieldcrest Avenue, Edison, NJ Property Contact: Chris Knutsen, Ph.D. Owner / Renter / other: Renter Contact s Phone: work (732) Building occupants: Children under age 13: Children age 13-18: Adults: 45 Part II Building Characteristics Building type: Office / commercial Describe building: Office, laboratory and warehouse Sensitive population: day care / nursing home / hospital / school / other (specify): NA floors - below grade: floors at or above grade: 1 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / other (specify) Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Gas Back-up Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Is there a whole house fan? No 165 Fieldcrest Ave 14 September 21 1

222 Septic system? No Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? No active / passive Sub-slab vapor/moisture barrier in place? No Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): 16 Fieldcrest Avenue, Edison, NJ Other stationary sources nearby (gas stations, emission stacks, etc.): None Heavy vehicular traffic nearby (or other mobile sources): None Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans None NA Gas-powered equipment None NA Kerosene storage cans None NA Paints / thinners / strippers Storage closet No Cleaning solvents None NA Oven cleaners None NA Carpet / upholstery cleaners None NA Other house cleaning products None NA Moth balls None NA Polishes / waxes None NA Insecticides None NA Furniture / floor polish Storage closet No Nail polish / polish remover Used by occupants NA Hairspray Used by occupants NA Cologne / perfume Used by occupants NA Air fresheners Bathroom No Fuel tank (inside building) None NA Wood stove or fireplace None NA New furniture / upholstery None NA New carpeting / flooring None NA Hobbies - glues, paints, etc. None NA 165 Fieldcrest Ave 14 September 21 2

223 Nature of work conducted: 1.) What is produced or package: The laboratory performs independent testing of raw materials for QA/QC purposes., raw materials that are used in health/beauty products, cosmetics, pharmaceuticals, etc. 2.) What chemicals/materials are used? See attached MSDS sheets. 3.) Are MSDS sheets available? Yes 4.) Ingredients listed in on-site chemicals: N/A 5.) Chemicals observed on-site: Only maintenance/cleaning chemicals. Part V Miscellaneous Items Do any occupants of the building smoke? Yes How often? Every day Last time someone smoked in the building? N/A Does the building have an attached garage directly connected to living space? Yes (warehouse door) If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? No Do the occupants of the building have their clothes dry cleaned? No If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? No If yes, what types of solvents are used? If yes, are their clothes washed at work? No Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? No If yes, when and where? Part VI Sampling Information Sample Technician: Dyna Krumich Phone number: (732) Sample Source: Indoor Air/Sub-Slab Soil Gas Sampler Type: Stainless Steel Canister (SUMMA) 165 Fieldcrest Ave 14 September 21 3

224 Analytical Method: TO-15 Cert. Laboratory: Accutest See IAQ Report #7 Table 2-2 for Sample IDs Were Instructions for Occupants followed? Yes If not, describe modifications: See IAQ Report #7 Figure 3-1 for Sample Locations Part VII - Meteorological Conditions See IAQ Report # 7 Appendix A for Meteorological Data Was there significant precipitation within 12 hours of (or during) the sampling event?.8 in. (9/22/1) Average outside temperature on date sampled: 63 F (9/21/1) 76 F (9/22/1) Maximum temperature on date sampled: 9 F Minimum temperature on date sampled: 51 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) 165 Fieldcrest Ave 14 September 21 4

225 name company cat # lot # quantity size date receiveexp date 2,7-Dihydroxy naphthalene Sigma D H g 27-Jul-9 Jul-12 ammonium Oxalate Fisher Scientific A g 1-Sep-1 1-Sep-13 Ammonium fluoride Fisher A g 8-Sep-8 Sep-11 Acrylic acid Sigma A PK 1 1 g 19-May-1 May-13 Alkyltrimethyl ammonium Bromide Sigma M K g 25-Nov-9 Nov-12 Ammonium Sulfomate Sigma MKAA g 25-Apr-9 Nov-12 Barium hydroxide Fisher B g 9-Sep-8 Sep-11 Benzoic acid Acros A g 11-May-1 May-13 Chloroacetic acid Fisher A g 28-May-8 May-11 Chloroacetic acid Fisher A A 1 5 g 18-Aug-9 Aug-12 Chloramine T trihydrate Sigma KD 1 1 g 17-Feb-6 Feb-11 Chloramine T trihydrate Fisher o g 16-Oct-8 Oct-11 Chromotropic acid Fisher Scientific c g 26-Aug-1 31-Dec-14 Cobalt Chloride Fisher C g 12-Sep-7 Sep-1 Cyanoacetic acid Sigma CO 2 5 g 1-Jan-6 Jan-11 Dicyclohexylamine Sigma LH 1 1 g 1-Nov-9 Nov-12 Ferric Chloride Fisher FL g 15-Jun-1 28-Feb-15 Hexylamine Sigma CC 1 1 ml 28-Sep-5 Sep-1 hydrazine sulfate Fisher H A 1 5 g 2-Apr-1 Apr-13 hypophosphorus acid 5 % Sigma BJ 1 1 g 6-Feb-9 Feb-11 Glycolic Acid Acros A g 12-Feb-9 Feb-12 Imidizole Fisher o g 15-Mar-1 Mar-13 Iodine resublimed Fisher I g 1-May-9 May-12 Iron chloride Sigma MKBB g 1-Mar-1 Mar-13 L-Tartaric acid Fisher A g 22-Oct-8 Oct-11 Methacrylic acid Sigma- Aldrich JJ 1 5 g 2-Aug-1 1-Aug-13 O-cresol Fisher C g 13-Mar-6 Mar-11 Oxalic acid Fisher A g 9-Jan-8 Jan-11 Phosphorus acid Sigma MH 1 1 g 28-Oct-8 Oct-11 Phosphorus Pentoxide Fisher A g 18-Jun-8 Jun-11 Platinum Cobalt std Fisher SP ml 21-Nov-9 Oct-11 Potassium Dichromate GFS 78 C g 12-Aug-1 1-Aug-13

226 Potassium Hydroxide Fisher Scientific P B 2 5 g 31-Aug-1 31-May-15 Potassium hydroxide Fisher P g 12-Feb-9 Feb-12 Propionic acid Sigma 4297 MKAA ml 26-Mar-9 Mar-11 Propionic anhydride Sigma CH 1 5 g 13-Nov-8 Nov-1 Sodium borohydride Sigma BE 2 1 g 27-Jan-1 Jan-13 Sodium diethyldithiocarbomate Fisher S g 8-Jun-9 Jun-12 Sodium hydroxide Fisher S kg 17-May-1 31-Mar-15 Stannous chloride Fisher T g 9-Jan-6 Jan-11 Stannous chloride Fisher T g 1-Nov-5 Nov-1 Sulfamic acid Sigma KD 1 1 g 4-Aug-8 Aug-11 Tetrabutyl ammonium Hydroxide 1 M Fisher O ml 14-Feb-6 Feb-11 Tetramethyl ammonium hydroxide 1 % Sigma ml 12-May-9 May-12 Tetramethylammonium Hydroxide 25% soln Sigma- Aldrich KEV 1 1 L 18-Aug-1 1-Aug-13 Titanium trichloride Sci Lab SLT ml 7-Jan-1 Jan-13 Trichloroacetic acid Fisher A g 26-Jun-8 Jun-11 Trichloroacetic acid Fisher A g 27-Jun-8 Jun-11 Trichloroacetic acid Sigma T K g 8-Mar-1 Mar-13 Trichloroacetic acid Fisher A g 6-Sep-5 Sep-1 Trifluoroacetic acid Acros B g 24-Oct-5 Oct-1 Tri-sodium phosphate decahydrate Sigma kg 19-Aug-9 Aug-12 Zinc Chloride Fisher Z g 5-Dec-7 Dec-1

227 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Dyna Krumich/Kelly Pniewski Date: 15 February 211 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: Cembre Case #: NA Part I - Occupants Building Address: 165/181 Fieldcrest Avenue, Edison, NJ Property Contact: Nicole Visceglia-Rogers (FBC) Owner / Renter / other: Owner Contact s Phone: work (732) Building occupants: Children under age 13: Children age 13-18: Adults: 8-12 Part II Building Characteristics Building type: Office / commercial Describe building: Office and warehouse Sensitive population: Sensitive population: day care / nursing home / hospital / school / other (specify): NA floors - below grade: floors at or above grade: 1 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / other (specify) Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Gas Back-up Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene Cembre 15 February 211 1

228 Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Is there a whole house fan? No Septic system? No Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? No active / passive Sub-slab vapor/moisture barrier in place? No Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): 16 Fieldcrest Avenue, Edison, NJ Other stationary sources nearby (gas stations, emission stacks, etc.): None Heavy vehicular traffic nearby (or other mobile sources): None Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans None NA Gas-powered equipment None NA Kerosene storage cans None NA Paints / thinners / strippers None NA Cleaning solvents Closet No Oven cleaners None NA Carpet / upholstery cleaners None NA Other house cleaning products None NA Moth balls None NA Polishes / waxes None NA Insecticides None NA Furniture / floor polish None NA Nail polish / polish remover None NA Hairspray None NA Cologne / perfume None NA Air fresheners None NA Fuel tank (inside building) None NA Wood stove or fireplace None NA Cembre 15 February 211 2

229 New furniture / upholstery None NA New carpeting / flooring None NA Hobbies - glues, paints, etc. None NA Nature of work conducted: 1.) What is produced or package: The facility is used as a sales office for electrical compression connectors and related installation tools. 2.) What chemicals/materials are used? None. 3.) Are MSDS sheets available? No. 4.) Ingredients listed in on-site chemicals: N/A 5.) Chemicals observed on-site: None Part V Miscellaneous Items Do any occupants of the building smoke? Yes How often? Several times daily Last time someone smoked in the building? N/A Does the building have an attached garage directly connected to living space? No If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? No Do the occupants of the building have their clothes dry cleaned? No If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? No If yes, what types of solvents are used? If yes, are their clothes washed at work? No Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? No If yes, when and where? Cembre 15 February 211 3

230 Part VI Sampling Information Sample Technician: Dyna Krumich Phone number: Sample Source: Indoor Air, Sub-Slab Sampler Type: Stainless Steel Canister (SUMMA) Analytical Method: TO-15 Cert. Laboratory: Accutest Were Instructions for Occupants followed? Yes See IAQ Report #7 Table 2-2 for Sample IDs Were Instructions for Occupants followed? Yes If not, describe modifications: See IAQ Report #7 Figure 3-1 for Sample Locations Part VII - Meteorological Conditions See IAQ Report # 7 Appendix A for Meteorological Data Was there significant precipitation within 12 hours of (or during) the sampling event?.4 in. (2/24/11) 1.39 in. (2/25/11) Average outside temperature on date sampled: 34 F (2/24/11) 48 F (2/25/11) Maximum temperature on date sampled: 6 F Minimum temperature on date sampled: 24 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) Cembre 15 February 211 4

231 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Dyna Krumich/Alanna Garrison Date: 14 September 211 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: Cembre Case #: NA Part I - Occupants Building Address: 165/181 Fieldcrest Avenue, Edison, NJ Property Contact: Nicole Visceglia-Rogers (FBC) Owner / Renter / other: Owner Contact s Phone: work (732) Building occupants: Children under age 13: Children age 13-18: Adults: 8-12 Part II Building Characteristics Building type: Office / commercial Describe building: Office and warehouse Sensitive population: Sensitive population: day care / nursing home / hospital / school / other (specify): NA floors - below grade: floors at or above grade: 1 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / other (specify) Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Gas Back-up Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene Cembre 14 September 21 1

232 Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Is there a whole house fan? No Septic system? No Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? No active / passive Sub-slab vapor/moisture barrier in place? No Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): 16 Fieldcrest Avenue, Edison, NJ Other stationary sources nearby (gas stations, emission stacks, etc.): None Heavy vehicular traffic nearby (or other mobile sources): None Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans None NA Gas-powered equipment None NA Kerosene storage cans None NA Paints / thinners / strippers None NA Cleaning solvents Closet No Oven cleaners None NA Carpet / upholstery cleaners None NA Other house cleaning products None NA Moth balls None NA Polishes / waxes None NA Insecticides None NA Furniture / floor polish None NA Nail polish / polish remover None NA Hairspray None NA Cologne / perfume None NA Air fresheners Bathroom NA Fuel tank (inside building) None NA Wood stove or fireplace None NA Cembre 14 September 21 2

233 New furniture / upholstery None NA New carpeting / flooring None NA Hobbies - glues, paints, etc. None NA Nature of work conducted: 1.) What is produced or package: The facility is used as a sales office for electrical compression connectors and related installation tools. 2.) What chemicals/materials are used? None. 3.) Are MSDS sheets available? No. 4.) Ingredients listed in on-site chemicals: N/A 5.) Chemicals observed on-site: None Part V Miscellaneous Items Do any occupants of the building smoke? Yes How often? Several times daily Last time someone smoked in the building? N/A Does the building have an attached garage directly connected to living space? No If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? No Do the occupants of the building have their clothes dry cleaned? No If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? No If yes, what types of solvents are used? If yes, are their clothes washed at work? No Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? No If yes, when and where? Cembre 14 September 21 3

234 Part VI Sampling Information Sample Technician: Dyna Krumich Phone number: Sample Source: Indoor Air, Sub-Slab Sampler Type: Stainless Steel Canister (SUMMA) Analytical Method: TO-15 Cert. Laboratory: Accutest Were Instructions for Occupants followed? Yes See IAQ Report #7 Table 2-2 for Sample IDs Were Instructions for Occupants followed? Yes If not, describe modifications: See IAQ Report #7 Figure 3-1 for Sample Locations Part VII - Meteorological Conditions See IAQ Report # 7 Appendix A for Meteorological Data Was there significant precipitation within 12 hours of (or during) the sampling event?.8 in. (9/22/1) Average outside temperature on date sampled: 63 F (9/21/1) 76 F (9/22/1) Maximum temperature on date sampled: 9 F Minimum temperature on date sampled: 51 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) Cembre 14 September 21 4

235 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Dyna Krumich/Kelly Pniewski Date: 15 February 211 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: Mackay Communications Case #: NA Part I - Occupants Building Address: 165 Fieldcrest Avenue, Edison, NJ Property Contact: Ray Blackford Owner / Renter / other: Renter Contact s Phone: work (732) fax (732) Building occupants: Children under age 13: Children age 13-18: Adults: 1-12 Part II Building Characteristics Building type: Office / industrial Describe building: Office and warehouse Sensitive population: day care / nursing home / hospital / school / other (specify): NA floors - below grade: floors at or above grade: 1 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / other (specify) Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Gas Back-up Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Is there a whole house fan? No MacKay 15 February 211 1

236 Septic system? No Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? No active / passive Sub-slab vapor/moisture barrier in place? No Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): 16 Fieldcrest Avenue, Edison, NJ Other stationary sources nearby (gas stations, emission stacks, etc.): None Heavy vehicular traffic nearby (or other mobile sources): None Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans None NA Gas-powered equipment None NA Kerosene storage cans None NA Paints / thinners / strippers None NA Cleaning solvents None NA Oven cleaners None NA Carpet / upholstery cleaners None NA Other house cleaning products None NA Moth balls None NA Polishes / waxes None NA Insecticides None NA Furniture / floor polish None NA Nail polish / polish remover None NA Hairspray None NA Cologne / perfume None NA Air fresheners None NA Fuel tank (inside building) None NA Wood stove or fireplace None NA New furniture / upholstery None NA New carpeting / flooring None NA Hobbies - glues, paints, etc. None NA MacKay 15 February 211 2

237 Nature of work conducted: 1.) What is produced or package: Sales and service for marine communications. 2.) What chemicals/materials are used? No chemicals are used. 3.) Are MSDS sheets available? No 4.) Ingredients listed in on-site chemicals: N/A 5.) Chemicals observed on-site: Part V Miscellaneous Items Do any occupants of the building smoke? Yes How often? Every day Last time someone smoked in the building? Not permitted in the building. Does the building have an attached garage directly connected to living space? Yes If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? Occasionally Do the occupants of the building have their clothes dry cleaned? No If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? No If yes, what types of solvents are used? If yes, are their clothes washed at work? No Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? No If yes, when and where? Part VI Sampling Information Sample Technician: Dyna Krumich Phone number: Sample Source: Indoor Air, Sub-Slab Sampler Type: Stainless Steel Canister (SUMMA) Analytical Method: TO-15 Cert. Laboratory: Accutest Were Instructions for Occupants followed? Yes See IAQ Report #7 Table 2-2 for Sample IDs MacKay 15 February 211 3

238 Were Instructions for Occupants followed? Yes If not, describe modifications: See IAQ Report #7 Figure 3-1 for Sample Locations Part VII - Meteorological Conditions See IAQ Report # 7 Appendix A for Meteorological Data Was there significant precipitation within 12 hours of (or during) the sampling event?.4 in. (2/24/11) 1.39 in. (2/25/11) Average outside temperature on date sampled: 34 F (2/24/11) 48 F (2/25/11) Maximum temperature on date sampled: 6 F Minimum temperature on date sampled: 24 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) MacKay 15 February 211 4

239 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Dyna Krumich/Alanna Garrison Date: 14 September 21 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: Mackay Communications Case #: NA Part I - Occupants Building Address: 165 Fieldcrest Avenue, Edison, NJ Property Contact: Ray Blackford Owner / Renter / other: Renter Contact s Phone: work (732) fax (732) Building occupants: Children under age 13: Children age 13-18: Adults: 1-12 Part II Building Characteristics Building type: Office / industrial Describe building: Office and warehouse Sensitive population: day care / nursing home / hospital / school / other (specify): NA floors - below grade: floors at or above grade: 1 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / other (specify) Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Gas Back-up Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Is there a whole house fan? No MacKay 14 September 21 1

240 Septic system? No Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? No active / passive Sub-slab vapor/moisture barrier in place? No Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): 16 Fieldcrest Avenue, Edison, NJ Other stationary sources nearby (gas stations, emission stacks, etc.): None Heavy vehicular traffic nearby (or other mobile sources): None Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans None NA Gas-powered equipment None NA Kerosene storage cans None NA Paints / thinners / strippers None NA Cleaning solvents None NA Oven cleaners None NA Carpet / upholstery cleaners None NA Other house cleaning products None NA Moth balls None NA Polishes / waxes None NA Insecticides None NA Furniture / floor polish None NA Nail polish / polish remover None NA Hairspray None NA Cologne / perfume None NA Air fresheners None NA Fuel tank (inside building) None NA Wood stove or fireplace None NA New furniture / upholstery None NA New carpeting / flooring None NA Hobbies - glues, paints, etc. None NA MacKay 14 September 21 2

241 Nature of work conducted: 1.) What is produced or package: Sales and service for marine communications. 2.) What chemicals/materials are used? No chemicals are used. 3.) Are MSDS sheets available? No 4.) Ingredients listed in on-site chemicals: N/A 5.) Chemicals observed on-site: Part V Miscellaneous Items Do any occupants of the building smoke? Yes How often? Every day Last time someone smoked in the building? Not permitted in the building. Does the building have an attached garage directly connected to living space? Yes If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? Occasionally Do the occupants of the building have their clothes dry cleaned? Yes If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? No If yes, what types of solvents are used? If yes, are their clothes washed at work? No Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? No If yes, when and where? Part VI Sampling Information Sample Technician: Dyna Krumich Phone number: Sample Source: Indoor Air, Sub-Slab Sampler Type: Stainless Steel Canister (SUMMA) Analytical Method: TO-15 Cert. Laboratory: Accutest Were Instructions for Occupants followed? Yes See IAQ Report #7 Table 2-2 for Sample IDs MacKay 14 September 21 3

242 Were Instructions for Occupants followed? Yes If not, describe modifications: See IAQ Report #7 Figure 3-1 for Sample Locations Part VII - Meteorological Conditions See IAQ Report # 7 Appendix A for Meteorological Data Was there significant precipitation within 12 hours of (or during) the sampling event?.8 in. (9/22/1) Average outside temperature on date sampled: 63 F (9/21/1) 76 F (9/22/1) Maximum temperature on date sampled: 9 F Minimum temperature on date sampled: 51 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) MacKay 14 September 21 4

243 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Dyna Krumich/Kelly Pniewski Date: 15 February 211 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: Peppermint Tree Case #: NA Part I - Occupants Building Address: Building 165 Fieldcrest Avenue, Edison, NJ Property Contact: FBC Owner / Renter / other: Owner Contact s Phone: work (732) Building occupants: Children under age 13: 55-6 Children age 13-18: Adults: 8-1 Part II Building Characteristics Building type: Office / commercial Describe building: Daycare Center Multi room Sensitive population: day care floors - below grade: floors at or above grade: 1 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / other (specify) Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Gas Back-up Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Is there a whole house fan? No Peppermint Tree 15 February 211 1

244 Septic system? No Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? No active / passive Sub-slab vapor/moisture barrier in place? No Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): 16 Fieldcrest Avenue, Edison, NJ Other stationary sources nearby (gas stations, emission stacks, etc.): None Heavy vehicular traffic nearby (or other mobile sources): None Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans None NA Gas-powered equipment None NA Kerosene storage cans None NA Paints / thinners / strippers None No Cleaning solvents None NA Oven cleaners None NA Carpet / upholstery cleaners None NA Other house cleaning products None NA Moth balls None NA Polishes / waxes None NA Insecticides None NA Furniture / floor polish None No Nail polish / polish remover None NA Hairspray None NA Cologne / perfume None NA Air fresheners Bathroom No Fuel tank (inside building) None NA Wood stove or fireplace None NA New furniture / upholstery None NA New carpeting / flooring None NA Hobbies - glues, paints, etc. Closet NA Peppermint Tree 15 February 211 2

245 Nature of work conducted: 1.) What is produced or package: The facility is a daycare center. 2.) What chemicals/materials are used? No chemicals are used. 3.) Are MSDS sheets available? No 4.) Ingredients listed in on-site chemicals: N/A 5.) Chemicals observed on-site: Raid ant spray Basic Solutions Ortho Wasp & Hornet Killer Part V Miscellaneous Items Do any occupants of the building smoke? Yes How often? Every day Last time someone smoked in the building? Not permitted in the building. Does the building have an attached garage directly connected to living space? No If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? No Do the occupants of the building have their clothes dry cleaned? No If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? No If yes, what types of solvents are used? If yes, are their clothes washed at work? No Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? No If yes, when and where? Part VI Sampling Information Sample Technician: Dyna Krumich Phone number: Sample Source: Indoor Air, Sub-Slab Sampler Type: Stainless Steel Canister (SUMMA) Analytical Method: TO-15 Cert. Laboratory: Accutest Peppermint Tree 15 February 211 3

246 See IAQ Report #7 Table 2-2 for Sample IDs Were Instructions for Occupants followed? Yes If not, describe modifications: See IAQ Report #7 Figure 3-1 for Sample Locations Part VII - Meteorological Conditions See IAQ Report # 7 Appendix A for Meteorological Data Was there significant precipitation within 12 hours of (or during) the sampling event?.4 in. (2/24/11) 1.39 in. (2/25/11) Average outside temperature on date sampled: 34 F (2/24/11) 48 F (2/25/11) Maximum temperature on date sampled: 6 F Minimum temperature on date sampled: 24 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) Peppermint Tree 15 February 211 4

247 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Dyna Krumich/Alanna Garrison Date: 14 September 21 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: Peppermint Tree Case #: NA Part I - Occupants Building Address: Building 165 Fieldcrest Avenue, Edison, NJ Property Contact: FBC Owner / Renter / other: Owner Contact s Phone: work (732) Building occupants: Children under age 13: 55-6 Children age 13-18: Adults: 8-1 Part II Building Characteristics Building type: Office / commercial Describe building: Daycare Center Multi room Sensitive population: day care floors - below grade: floors at or above grade: 1 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / other (specify) Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Gas Back-up Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Is there a whole house fan? No Peppermint Tree 14 September 21 1

248 Septic system? No Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? No active / passive Sub-slab vapor/moisture barrier in place? No Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): 16 Fieldcrest Avenue, Edison, NJ Other stationary sources nearby (gas stations, emission stacks, etc.): None Heavy vehicular traffic nearby (or other mobile sources): None Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans None NA Gas-powered equipment None NA Kerosene storage cans None NA Paints / thinners / strippers None No Cleaning solvents None NA Oven cleaners None NA Carpet / upholstery cleaners None NA Other house cleaning products None NA Moth balls None NA Polishes / waxes None NA Insecticides None NA Furniture / floor polish None No Nail polish / polish remover None NA Hairspray None NA Cologne / perfume None NA Air fresheners Bathroom No Fuel tank (inside building) None NA Wood stove or fireplace None NA New furniture / upholstery None NA New carpeting / flooring None NA Hobbies - glues, paints, etc. Closet NA Peppermint Tree 14 September 21 2

249 Nature of work conducted: 1.) What is produced or package: The facility is a daycare center. 2.) What chemicals/materials are used? No chemicals are used. 3.) Are MSDS sheets available? No 4.) Ingredients listed in on-site chemicals: N/A 5.) Chemicals observed on-site: Part V Miscellaneous Items Do any occupants of the building smoke? Yes How often? Every day Last time someone smoked in the building? Not permitted in the building. Does the building have an attached garage directly connected to living space? No If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? No Do the occupants of the building have their clothes dry cleaned? No If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? No If yes, what types of solvents are used? If yes, are their clothes washed at work? No Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? No If yes, when and where? Part VI Sampling Information Sample Technician: Dyna Krumich Phone number: Sample Source: Indoor Air, Sub-Slab Sampler Type: Stainless Steel Canister (SUMMA) Analytical Method: TO-15 Cert. Laboratory: Accutest See IAQ Report #7 Table 2-2 for Sample IDs Peppermint Tree 14 September 21 3

250 Were Instructions for Occupants followed? Yes If not, describe modifications: See IAQ Report #7 Figure 3-1 for Sample Locations Part VII - Meteorological Conditions Was there significant precipitation within 12 hours of (or during) the sampling event? (9/22/1).8 in. Average outside temperature on date sampled: 63 F (9/21/1) 76 F (9/22/1) Maximum temperature on date sampled: 9 F Minimum temperature on date sampled: 51 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) Peppermint Tree 14 September 21 4

251 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Dyna Krumich/Kelly Pniewski Date: 15 February 211 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: Rockwell Automation Case #: NA Part I - Occupants Building Address: 165 Fieldcrest Avenue, Edison, NJ Property Contact: Werney Castro Owner / Renter / other: Renter Contact s Phone: work (732) cell (732) fax (732) Building occupants: Children under age 13: Children age 13-18: Adults: 1 Part II Building Characteristics Building type: Office / commercial Describe building: Office and warehouse Sensitive population: day care / nursing home / hospital / school / other (specify): NA floors - below grade: floors at or above grade: 1 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / other (specify) Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Gas Back-up Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Rockwell 15 February 211 1

252 Is there a whole house fan? No Septic system? No Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? No active / passive Sub-slab vapor/moisture barrier in place? No Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): 16 Fieldcrest Avenue, Edison, NJ Other stationary sources nearby (gas stations, emission stacks, etc.): None Heavy vehicular traffic nearby (or other mobile sources): None Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans None NA Gas-powered equipment None NA Kerosene storage cans None NA Paints / thinners / strippers None NA Cleaning solvents None NA Oven cleaners None NA Carpet / upholstery cleaners None NA Other house cleaning products None NA Moth balls None NA Polishes / waxes None NA Insecticides None NA Furniture / floor polish None NA Nail polish / polish remover None NA Hairspray None NA Cologne / perfume None NA Air fresheners None NA Fuel tank (inside building) None NA Wood stove or fireplace None NA New furniture / upholstery None NA Rockwell 15 February 211 2

253 New carpeting / flooring None NA Hobbies - glues, paints, etc. None NA Nature of work conducted: 1.) What is produced or package: Motion control products; a testing area and a shipping/receiving area 2.) What chemicals/materials are used? Several. 3.) Are MSDS sheets available? We were provided with a list of the chemicals use but not MSDS sheets. 4.) Ingredients listed in on-site chemicals: N/A 5.) Chemicals observed on-site: THINNER FOR LIQUID PAPER CORRECTION FLUID, GILLETTE LIQUID PAPER FOR COPIES CORRECTION FLUID, GILLETTE AEROSOL COATINGS, SRAYON PRODUCTS BLUE-GREEN AIR FRAGRANCING GEL, GEORGIA PACIFIC AEROSOL COATINGS, SRAYON PRODUCTS BEIGE SIGHT SAVERS ANTI-FOG FORMULA, BAUSCH & LOMB BLACK DEVELOPER, PITNEY BOWES INK CARTRIDGE T3, EPSON BLACK TONER 334, KONICA CARBON MONOXIDE (SGP) CLEANING FLUID Pm, SANFORD INK CARTRIDGE T511 (9N), EPSON COMMERCIAL PROPANE, SUBURBAN PROPANE CUSTOM FAST PRODUCTION ENAMEL, GRAY, SHERWIN WILLIAMS DEVELOPER, KONICA DRAWING INK P BLACK, SANFORD DRUM, KONICA E-Z PAINT THINNER, 3 E COMPANY EZ SEAL SOLUTION, PITNEY BOWES SILICONE RUBBER COMPOUND, GE SILICONES GLADE, S.C. JOHNSON & SON GLASS CLEANER, SPARTAN HIGH SOLIDS INDUSTRIAL ENAMEL, SHERWIN WILLIAMS AEROSOL, HUMISEAL HYDROSEP, HAWS DRINKING FAUCET COMPANY JERGENS HAND LOTION, ANDREW JERGENS COMPANY LIGHT GRAY AEROSOL PAINT, CUSTOM PAK PRODUCTS JOY POT & PAN DETERGENT, COMMERCIAL PRODUCTS GROUP MISC SPRAYS, KRYLON PRODUCTS GROUP NEW RAPID TAP, RELTON CORP ROSIN CORE SOLDER, M.C. CANFIELD & SONS SILICONE COMPOUND, WAKEFIELD ENGINEERING Rockwell 15 February 211 3

254 SOFTSOAP LIQUID HAND SOAP, COLGATE-PALMOLIVE COMPANY URINAL BLOCKS, SPARTAN WD-4, WD-4 COMPANY WINDEX, SC. JOHNSON & SON ENCON HYDROSEP, ENCON SAFETY PRODUCTS WATER PRESERVATIVE, FENDALL INC. POWDER COATING PM, H.B. FULLER COMPANY Part V Miscellaneous Items Do any occupants of the building smoke? No How often? N/A Last time someone smoked in the building? N/A Does the building have an attached garage directly connected to living space? No If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? No Do the occupants of the building have their clothes dry cleaned? No If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? No If yes, what types of solvents are used? If yes, are their clothes washed at work? No Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? No If yes, when and where? Part VI Sampling Information Sample Technician: Dyna Krumich Phone number: Sample Source: Indoor Air, Sub-Slab Sampler Type: Stainless Steel Canister (SUMMA) Analytical Method: TO-15 Cert. Laboratory: Accutest Were Instructions for Occupants followed? Yes See IAQ Report #7 Table 2-2 for Sample IDs Were Instructions for Occupants followed? Yes If not, describe modifications: Rockwell 15 February 211 4

255 See IAQ Report #7 Figure 3-1 for Sample Locations Part VII - Meteorological Conditions See IAQ Report # 7 Appendix A for Meteorological Data Was there significant precipitation within 12 hours of (or during) the sampling event?.4 in. (2/24/11) 1.39 in. (2/25/11) Average outside temperature on date sampled: 34 F (2/24/11) 48 F (2/25/11) Maximum temperature on date sampled: 6 F Minimum temperature on date sampled: 24 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) Rockwell 15 February 211 5

256 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Dyna Krumich/Alanna Garrison Date: 14 September 21 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: Rockwell Automation Case #: NA Part I - Occupants Building Address: 165 Fieldcrest Avenue, Edison, NJ Property Contact: Werney Castro Owner / Renter / other: Renter Contact s Phone: work (732) cell (732) fax (732) Building occupants: Children under age 13: Children age 13-18: Adults: 1 Part II Building Characteristics Building type: Office / commercial Describe building: Office and warehouse Sensitive population: day care / nursing home / hospital / school / other (specify): NA floors - below grade: floors at or above grade: 1 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / other (specify) Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Gas Back-up Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Rockwell 14 September 21 1

257 Is there a whole house fan? No Septic system? No Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? No active / passive Sub-slab vapor/moisture barrier in place? No Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): 16 Fieldcrest Avenue, Edison, NJ Other stationary sources nearby (gas stations, emission stacks, etc.): None Heavy vehicular traffic nearby (or other mobile sources): None Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans None NA Gas-powered equipment None NA Kerosene storage cans None NA Paints / thinners / strippers None NA Cleaning solvents None NA Oven cleaners None NA Carpet / upholstery cleaners None NA Other house cleaning products None NA Moth balls None NA Polishes / waxes None NA Insecticides None NA Furniture / floor polish None NA Nail polish / polish remover None NA Hairspray None NA Cologne / perfume None NA Air fresheners None NA Fuel tank (inside building) None NA Wood stove or fireplace None NA New furniture / upholstery None NA Rockwell 14 September 21 2

258 New carpeting / flooring None NA Hobbies - glues, paints, etc. None NA Nature of work conducted: 1.) What is produced or package: Motion control products; a testing area and a shipping/receiving area 2.) What chemicals/materials are used? Several. 3.) Are MSDS sheets available? We were provided with a list of the chemicals use but not MSDS sheets. 4.) Ingredients listed in on-site chemicals: N/A 5.) Chemicals observed on-site: AEROSOL COATINGS, SRAYON PRODUCTS BLUE-GREEN AIR FRAGRANCING GEL, GEORGIA PACIFIC AEROSOL COATINGS, SRAYON PRODUCTS BEIGE SIGHT SAVERS ANTI-FOG FORMULA, BAUSCH & LOMB BLACK DEVELOPER, PITNEY BOWES INK CARTRIDGE T3, EPSON BLACK TONER 334, KONICA CARBON MONOXIDE (SGP) CLEANING FLUID Pm, SANFORD INK CARTRIDGE T511 (9N), EPSON COMMERCIAL PROPANE, SUBURBAN PROPANE CUSTOM FAST PRODUCTION ENAMEL, GRAY, SHERWIN WILLIAMS DEVELOPER, KONICA DRAWING INK P BLACK, SANFORD E-Z PAINT THINNER, 3 E COMPANY EZ SEAL SOLUTION, PITNEY BOWES SILICONE RUBBER COMPOUND, GE SILICONES GLADE, S.C. JOHNSON & SON GLASS CLEANER, SPARTAN HIGH SOLIDS INDUSTRIAL ENAMEL, SHERWIN WILLIAMS AEROSOL, HUMISEAL HYDROSEP, HAWS DRINKING FAUCET COMPANY JERGENS HAND LOTION, ANDREW JERGENS COMPANY JOY POT & PAN DETERGENT, COMMERCIAL PRODUCTS GROUP MISC SPRAYS, KRYLON PRODUCTS GROUP NEW RAPID TAP, RELTON CORP ROSIN CORE SOLDER, M.C. CANFIELD & SONS SILICONE COMPOUND, WAKEFIELD ENGINEERING SOFTSOAP LIQUID HAND SOAP, COLGATE-PALMOLIVE COMPANY URINAL BLOCKS, SPARTAN WD-4, WD-4 COMPANY WINDEX, SC. JOHNSON & SON Rockwell 14 September 21 3

259 ENCON HYDROSEP, ENCON SAFETY PRODUCTS WATER PRESERVATIVE, FENDALL INC. POWDER COATING PM, H.B. FULLER COMPANY Part V Miscellaneous Items Do any occupants of the building smoke? No How often? N/A Last time someone smoked in the building? N/A Does the building have an attached garage directly connected to living space? No If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? No Do the occupants of the building have their clothes dry cleaned? No If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? No If yes, what types of solvents are used? If yes, are their clothes washed at work? No Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? No If yes, when and where? Part VI Sampling Information Sample Technician: Dyna Krumich Phone number: Sample Source: Indoor Air, Sub-Slab Sampler Type: Stainless Steel Canister (SUMMA) Analytical Method: TO-15 Cert. Laboratory: Accutest Were Instructions for Occupants followed? Yes See IAQ Report #7 Table 2-2 for Sample IDs Were Instructions for Occupants followed? Yes If not, describe modifications: See IAQ Report #7 Figure 3-1 for Sample Locations Part VII - Meteorological Conditions Rockwell 14 September 21 4

260 See IAQ Report # 7 Appendix A for Meteorological Data Was there significant precipitation within 12 hours of (or during) the sampling event?.8 in. (9/22/1) Average outside temperature on date sampled: 63 F (9/21/1) 76 F (9/22/1) Maximum temperature on date sampled: 9 F Minimum temperature on date sampled: 51 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) Rockwell 14 September 21 5

261 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Dyna Krumich/Kelly Pniewski Date: 15 February 21 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: Vacant (previously Truform) Case #: NA Part I - Occupants Building Address: 165 Fieldcrest Avenue, Edison, NJ Property Contact: Nicole Visceglia-Rogers/Amy Uken Owner / Renter / other: Owner Contact s Phone: work (732) Building occupants: Children under age 13: Children age 13-18: Adults: Part II Building Characteristics Building type: Office / commercial Describe building: Office and warehouse Sensitive population: Sensitive population: day care / nursing home / hospital / school / other (specify): NA floors - below grade: floors at or above grade: 1 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / other (specify) Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Gas Back-up Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene Vacant (Truform) 15 February 211 1

262 Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Is there a whole house fan? No Septic system? No Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? No active / passive Sub-slab vapor/moisture barrier in place? No Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): 16 Fieldcrest Avenue, Edison, NJ Other stationary sources nearby (gas stations, emission stacks, etc.): None Heavy vehicular traffic nearby (or other mobile sources): None Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans None NA Gas-powered equipment None NA Kerosene storage cans None NA Paints / thinners / strippers None NA Cleaning solvents Closet No Oven cleaners None NA Carpet / upholstery cleaners None NA Other house cleaning products None NA Moth balls None NA Polishes / waxes None NA Insecticides None NA Furniture / floor polish None NA Nail polish / polish remover None NA Hairspray None NA Cologne / perfume None NA Air fresheners None NA Fuel tank (inside building) None NA Vacant (Truform) 15 February 211 2

263 Wood stove or fireplace None NA New furniture / upholstery None NA New carpeting / flooring None NA Hobbies - glues, paints, etc. None NA Nature of work conducted: 1.) What is produced or package: N/A 2.) What chemicals/materials are used? None. 3.) Are MSDS sheets available? No. 4.) Ingredients listed in on-site chemicals: N/A 5.) Chemicals observed on-site: None Part V Miscellaneous Items Do any occupants of the building smoke? No How often? N/A Last time someone smoked in the building? N/A Does the building have an attached garage directly connected to living space? No If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? No Do the occupants of the building have their clothes dry cleaned? No If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? No If yes, what types of solvents are used? If yes, are their clothes washed at work? No Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? No If yes, when and where? Part VI Sampling Information Vacant (Truform) 15 February 211 3

264 Sample Technician: Dyna Krumich Phone number: Sample Source: Indoor Air, Sub-Slab Sampler Type: Stainless Steel Canister Analytical Method: TO-15 Cert. Laboratory: Accutest See IAQ Report #7 Table 2-2 for Sample IDs Were Instructions for Occupants followed? Yes If not, describe modifications: See IAQ Report #7 Figure 3-1 for Sample Locations Part VII - Meteorological Conditions See IAQ Report # 7 Appendix A for Meteorological Data Was there significant precipitation within 12 hours of (or during) the sampling event?.4 in. (2/24/11) 1.39 in. (2/25/11) Average outside temperature on date sampled: 34 F (2/24/11) 48 F (2/25/11) Maximum temperature on date sampled: 6 F Minimum temperature on date sampled: 24 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) Vacant (Truform) 15 February 211 4

265 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Dyna Krumich/Kelly Pniewski Date: 14 September 21 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: Truform Case #: NA Part I - Occupants Building Address: 165 Fieldcrest Avenue, Edison, NJ Property Contact: Nicole Visceglia-Rogers/Amy Uken Owner / Renter / other: Owner Contact s Phone: work (732) Building occupants: Children under age 13: Children age 13-18: Adults: 2 Part II Building Characteristics Building type: Office / commercial Describe building: Office and warehouse Sensitive population: Sensitive population: day care / nursing home / hospital / school / other (specify): NA floors - below grade: floors at or above grade: 1 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / other (specify) Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Gas Back-up Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene Truform 14 September 21 1

266 Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Is there a whole house fan? No Septic system? No Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? No active / passive Sub-slab vapor/moisture barrier in place? No Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): 16 Fieldcrest Avenue, Edison, NJ Other stationary sources nearby (gas stations, emission stacks, etc.): None Heavy vehicular traffic nearby (or other mobile sources): None Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans None NA Gas-powered equipment None NA Kerosene storage cans None NA Paints / thinners / strippers None NA Cleaning solvents Closet No Oven cleaners None NA Carpet / upholstery cleaners None NA Other house cleaning products None NA Moth balls None NA Polishes / waxes None NA Insecticides None NA Furniture / floor polish None NA Nail polish / polish remover None NA Hairspray None NA Cologne / perfume None NA Air fresheners Bathroom Yes Fuel tank (inside building) None NA Truform 14 September 21 2

267 Wood stove or fireplace None NA New furniture / upholstery None NA New carpeting / flooring None NA Hobbies - glues, paints, etc. None NA Nature of work conducted: 1.) What is produced or package: N/A 2.) What chemicals/materials are used? None. 3.) Are MSDS sheets available? No. 4.) Ingredients listed in on-site chemicals: N/A 5.) Chemicals observed on-site: None Part V Miscellaneous Items Do any occupants of the building smoke? No How often? N/A Last time someone smoked in the building? N/A Does the building have an attached garage directly connected to living space? No If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? No Do the occupants of the building have their clothes dry cleaned? Yes If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? No If yes, what types of solvents are used? If yes, are their clothes washed at work? No Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? No If yes, when and where? Part VI Sampling Information Truform 14 September 21 3

268 Sample Technician: Dyna Krumich Phone number: Sample Source: Indoor Air, Sub-Slab Sampler Type: Stainless Steel Canister Analytical Method: TO-15 Cert. Laboratory: Accutest See IAQ Report #7 Table 2-2 for Sample IDs Were Instructions for Occupants followed? Yes If not, describe modifications: See IAQ Report #7 Figure 3-1 for Sample Locations Part VII - Meteorological Conditions See IAQ Report # 7 Appendix A for Meteorological Data Was there significant precipitation within 12 hours of (or during) the sampling event?.8 in. (9/22/1) Average outside temperature on date sampled: 63 F (9/21/1) 76 F (9/22/1) Maximum temperature on date sampled: 9 F Minimum temperature on date sampled: 51 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) Truform 14 September 21 4

269 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Dyna Krumich/Kelly Pniewski Date: 15 February 211 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: EPA Site Building 1 Case #: NA Part I - Occupants Building Address: EPA Site Building 1 Property Contact: Kwong Cho Owner / Renter / other: Owner Contact s Phone: work (732) Building occupants: Children under age 13: Children age 13-18: Adults: 5 Part II Building Characteristics Building type: office Describe building: brick outside, office, 3 floors Sensitive population: day care / nursing home / hospital / school / other (specify): NA floors - below grade: floors at or above grade: 3 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / other (specify) Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene EPA Building 1 15 February 211 1

270 Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Is there a whole house fan? No Septic system? No Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? No active / passive Sub-slab vapor/moisture barrier in place? Yes Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): None Other stationary sources nearby (gas stations, emission stacks, etc.): 1. Exxon Service Station Edison Township 3115 Woodbridge Ave. 2. Shell Service Station Edison Township 89 RTE 1 S & Post Road 3. Sunoco Service Station Edison Township 188 Woodbridge Ave. 4. Mobil Service Station Edison Township 284 Woodbridge Ave. Heavy vehicular traffic nearby (or other mobile sources): Directly off of Woodbridge Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans None NA Gas-powered equipment None NA Kerosene storage cans None NA Paints / thinners / strippers Closet No Cleaning solvents None NA Oven cleaners None NA Carpet / upholstery cleaners None NA Other house cleaning products None NA Moth balls None NA Polishes / waxes None NA Insecticides None NA Furniture / floor polish None NA Nail polish / polish remover Used by Occupants No Hairspray Used by Occupants No EPA Building 1 15 February 211 2

271 Cologne / perfume Used by Occupants No Air fresheners Bathroom No Fuel tank (inside building) None NA Wood stove or fireplace None NA New furniture / upholstery None NA New carpeting / flooring None NA Hobbies - glues, paints, etc. None NA Nature of work conducted: 1.) What is produced or package: The building consists of office space, the workers generate reports. 2.) What chemicals/materials are used? No chemicals are used. 3.) Are MSDS sheets available? Not applicable. 4.) Ingredients listed in on-site chemicals: None 5.) Chemicals observed on-site: None observed Part V Miscellaneous Items Do any occupants of the building smoke? No How often? Last time someone smoked in the building? hours / days ago Does the building have an attached garage directly connected to living space? No If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? No Do the occupants of the building have their clothes dry cleaned? No If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? No If yes, what types of solvents are used? If yes, are their clothes washed at work? No Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? No EPA Building 1 15 February 211 3

272 If yes, when and where? Part VI Sampling Information Sample Technician: Dyna Krumich Phone number: Sample Source: Indoor Air, Sub-Slab Sampler Type: Stainless Steel Canister (SUMMA) Analytical Method: TO-15 Cert. Laboratory: Accutest See IAQ Report #7 Table 2-2 for Sample information. Were Instructions for Occupants followed? Yes If not, describe modifications: Provide Drawing of Sample Location(s) in Building See IAQ Report #7 Figure 5-1 for Sample Locations. Part VII - Meteorological Conditions See IAQ Report #7 Appendix A for Meteorological Data. Was there significant precipitation within 12 hours of (or during) the sampling event?. in. (2/22/11). in. (2/23/11) Average outside temperature on date sampled: 28 F (2/22/11) 32 F (2/23/11) Maximum temperature on date sampled: 45 F Minimum temperature on date sampled: 18 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) EPA Building 1 15 February 211 4

273 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Dyna Krumich/Alanna Garrison Date: 16 September 21 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: EPA Site Building 1 Case #: NA Part I - Occupants Building Address: EPA Site Building 1 Property Contact: Kwong Cho Owner / Renter / other: Owner Contact s Phone: work (732) Building occupants: Children under age 13: Children age 13-18: Adults: 5 Part II Building Characteristics Building type: office Describe building: brick outside, office, 3 floors Sensitive population: day care / nursing home / hospital / school / other (specify): NA floors - below grade: floors at or above grade: 3 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / other (specify) Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene EPA Building 1 16 September 21 1

274 Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Is there a whole house fan? No Septic system? No Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? No active / passive Sub-slab vapor/moisture barrier in place? Yes Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): None Other stationary sources nearby (gas stations, emission stacks, etc.): 1. Exxon Service Station Edison Township 3115 Woodbridge Ave. 2. Shell Service Station Edison Township 89 RTE 1 S & Post Road 3. Sunoco Service Station Edison Township 188 Woodbridge Ave. 4. Mobil Service Station Edison Township 284 Woodbridge Ave. Heavy vehicular traffic nearby (or other mobile sources): Directly off of Woodbridge Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans None NA Gas-powered equipment None NA Kerosene storage cans None NA Paints / thinners / strippers Closet No Cleaning solvents None NA Oven cleaners None NA Carpet / upholstery cleaners None NA Other house cleaning products None NA Moth balls None NA Polishes / waxes None NA Insecticides None NA Furniture / floor polish None NA Nail polish / polish remover Used by Occupants No Hairspray Used by Occupants No EPA Building 1 16 September 21 2

275 Cologne / perfume Used by Occupants No Air fresheners Bathroom No Fuel tank (inside building) None NA Wood stove or fireplace None NA New furniture / upholstery None NA New carpeting / flooring None NA Hobbies - glues, paints, etc. None NA Nature of work conducted: 1.) What is produced or package: The building consists of office space, the workers generate reports. 2.) What chemicals/materials are used? No chemicals are used. 3.) Are MSDS sheets available? Not applicable. 4.) Ingredients listed in on-site chemicals: None 5.) Chemicals observed on-site: None observed Part V Miscellaneous Items Do any occupants of the building smoke? No How often? Last time someone smoked in the building? hours / days ago Does the building have an attached garage directly connected to living space? No If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? No Do the occupants of the building have their clothes dry cleaned? No If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? No If yes, what types of solvents are used? If yes, are their clothes washed at work? No Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? No EPA Building 1 16 September 21 3

276 If yes, when and where? Part VI Sampling Information Sample Technician: Dyna Krumich Phone number: Sample Source: Indoor Air, Sub-Slab Sampler Type: Stainless Steel Canister (SUMMA) Analytical Method: TO-15 Cert. Laboratory: Accutest See IAQ Report #7 Table 2-2 for Sample information. Were Instructions for Occupants followed? Yes If not, describe modifications: Provide Drawing of Sample Location(s) in Building See IAQ Report #7 Figure 5-1 for Sample Locations. Part VII - Meteorological Conditions See IAQ Report #7 Appendix A for Meteorological Data. Was there significant precipitation within 12 hours of (or during) the sampling event?. in. (9/23/1). in. (9/24/1) Average outside temperature on date sampled: 74 F (9/23/1) 77 F (9/24/1) Maximum temperature on date sampled: 86 F Minimum temperature on date sampled: 66 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) EPA Building 1 16 September 21 4

277 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Dyna Krumich/Kelly Pniewski Date: 15 February 211 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: EPA Site Building 18 Case #: NA Part I - Occupants Building Address: EPA Site Building 18 Property Contact: Kwong Cho Owner / Renter / other: Owner Contact s Phone: work (732) Building occupants: Children under age 13: Children age 13-18: Adults: 5 Part II Building Characteristics Building type: office Describe building: brick outside, office, 3 floors Sensitive population: day care / nursing home / hospital / school / other (specify): NA floors - below grade: floors at or above grade: 3 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / other (specify) Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene EPA Building February 211 1

278 Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Is there a whole house fan? No Septic system? No Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? No active / passive Sub-slab vapor/moisture barrier in place? Yes Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): None Other stationary sources nearby (gas stations, emission stacks, etc.): 1. Exxon Service Station Edison Township 3115 Woodbridge Ave. 2. Shell Service Station Edison Township 89 RTE 1 S & Post Road 3. Sunoco Service Station Edison Township 188 Woodbridge Ave. 4. Mobil Service Station Edison Township 284 Woodbridge Ave. Heavy vehicular traffic nearby (or other mobile sources): Directly off of Woodbridge Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans None NA Gas-powered equipment None NA Kerosene storage cans None NA Paints / thinners / strippers Closet No Cleaning solvents None NA Oven cleaners None NA Carpet / upholstery cleaners None NA Other house cleaning products Kitchen No Moth balls None NA Polishes / waxes None NA Insecticides None NA Furniture / floor polish None NA Nail polish / polish remover Used by Occupants No Hairspray Used by Occupants No Cologne / perfume Used by Occupants No EPA Building February 211 2

279 Air fresheners Bathroom No Fuel tank (inside building) None NA Wood stove or fireplace None NA New furniture / upholstery None NA New carpeting / flooring None NA Hobbies - glues, paints, etc. None NA Nature of work conducted: 1.) What is produced or package: The building consists of office space for contractors and the emergency response team. 2.) What chemicals/materials are used? No chemicals are used. 3.) Are MSDS sheets available? Not applicable. 4.) Ingredients listed in on-site chemicals: None 5.) Chemicals observed on-site: Part V Miscellaneous Items Do any occupants of the building smoke? No How often? Last time someone smoked in the building? hours / days ago Does the building have an attached garage directly connected to living space? No If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? No Do the occupants of the building have their clothes dry cleaned? No If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? No If yes, what types of solvents are used? If yes, are their clothes washed at work? No Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? No EPA Building February 211 3

280 If yes, when and where? Part VI Sampling Information Sample Technician: Dyna Krumich Phone number: Sample Source: Indoor Air, Sub-Slab Sampler Type: Stainless Steel Canister (SUMMA) Analytical Method: TO-15 Cert. Laboratory: Accutest See IAQ Report #7 Table 2-1 and 2-2 for Sample information. Were Instructions for Occupants followed? Yes If not, describe modifications: Provide Drawing of Sample Location(s) in Building See IAQ Report #7 Figure 5-2 for Sample Locations. Part VII - Meteorological Conditions See IAQ Report #7 Appendix A for Meteorological Data. Was there significant precipitation within 12 hours of (or during) the sampling event?. in. (2/22/11). in. (2/23/11) Average outside temperature on date sampled: 28 F (2/22/11) 32 F (2/23/11) Maximum temperature on date sampled: 45 F Minimum temperature on date sampled: 18 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) EPA Building February 211 4

281 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Dyna Krumich/Alanna Garrison Date: 16 September 21 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: EPA Site Building 18 Case #: NA Part I - Occupants Building Address: EPA Site Building 18 Property Contact: Kwong Cho Owner / Renter / other: Owner Contact s Phone: work (732) Building occupants: Children under age 13: Children age 13-18: Adults: 5 Part II Building Characteristics Building type: office Describe building: brick outside, office, 3 floors Sensitive population: day care / nursing home / hospital / school / other (specify): NA floors - below grade: floors at or above grade: 3 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / other (specify) Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene EPA Building September 21 1

282 Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Is there a whole house fan? No Septic system? No Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? No active / passive Sub-slab vapor/moisture barrier in place? Yes Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): None Other stationary sources nearby (gas stations, emission stacks, etc.): 1. Exxon Service Station Edison Township 3115 Woodbridge Ave. 2. Shell Service Station Edison Township 89 RTE 1 S & Post Road 3. Sunoco Service Station Edison Township 188 Woodbridge Ave. 4. Mobil Service Station Edison Township 284 Woodbridge Ave. Heavy vehicular traffic nearby (or other mobile sources): Directly off of Woodbridge Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans None NA Gas-powered equipment None NA Kerosene storage cans None NA Paints / thinners / strippers Closet No Cleaning solvents None NA Oven cleaners None NA Carpet / upholstery cleaners None NA Other house cleaning products Kitchen No Moth balls None NA Polishes / waxes None NA Insecticides None NA Furniture / floor polish None NA Nail polish / polish remover Used by Occupants No Hairspray Used by Occupants No Cologne / perfume Used by Occupants No EPA Building September 21 2

283 Air fresheners Bathroom No Fuel tank (inside building) None NA Wood stove or fireplace None NA New furniture / upholstery None NA New carpeting / flooring None NA Hobbies - glues, paints, etc. None NA Nature of work conducted: 1.) What is produced or package: The building consists of office space for contractors and the emergency response team. 2.) What chemicals/materials are used? No chemicals are used. 3.) Are MSDS sheets available? Not applicable. 4.) Ingredients listed in on-site chemicals: None 5.) Chemicals observed on-site: Part V Miscellaneous Items Do any occupants of the building smoke? No How often? Last time someone smoked in the building? hours / days ago Does the building have an attached garage directly connected to living space? No If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? No Do the occupants of the building have their clothes dry cleaned? No If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? No If yes, what types of solvents are used? If yes, are their clothes washed at work? No Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? No EPA Building September 21 3

284 If yes, when and where? Part VI Sampling Information Sample Technician: Dyna Krumich Phone number: Sample Source: Indoor Air, Sub-Slab Sampler Type: Stainless Steel Canister (SUMMA) Analytical Method: TO-15 Cert. Laboratory: Accutest See IAQ Report #7 Table 2-1 and 2-2 for Sample information. Were Instructions for Occupants followed? Yes If not, describe modifications: Provide Drawing of Sample Location(s) in Building See IAQ Report #7 Figure 5-2 for Sample Locations. Part VII - Meteorological Conditions See IAQ Report #7 Appendix A for Meteorological Data. Was there significant precipitation within 12 hours of (or during) the sampling event?. in. (9/23/1). in. (9/24/1) Average outside temperature on date sampled: 74 F (9/23/1) 77 F (9/24/1) Maximum temperature on date sampled: 86 F Minimum temperature on date sampled: 66 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) EPA Building September 21 4

285 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Dyna Krumich/Kelly Pniewski Date: 15 February 211 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: EPA Site Building 2 Case #: NA Part I - Occupants Building Address: EPA Site Building 2 Property Contact: Kwong Cho Owner / Renter / other: Owner Contact s Phone: work (732) Building occupants: Children under age 13: Children age 13-18: Adults: 2 Part II Building Characteristics Building type: office Describe building: vinyl siding outside, offices and nurse s station inside Sensitive population: day care / nursing home / hospital / school / other (specify): NA floors - below grade: floors at or above grade: 1 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / other (specify) Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Is there a whole house fan? No EPA Building 2 15 February 211 1

286 Septic system? No Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? No active / passive Sub-slab vapor/moisture barrier in place? Yes Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): None Other stationary sources nearby (gas stations, emission stacks, etc.): 1. Exxon Service Station Edison Township 3115 Woodbridge Ave. 2. Shell Service Station Edison Township 89 RTE 1 S & Post Road 3. Sunoco Service Station Edison Township 188 Woodbridge Ave. 4. Mobil Service Station Edison Township 284 Woodbridge Ave. Heavy vehicular traffic nearby (or other mobile sources): Directly off of Woodbridge Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans None NA Gas-powered equipment None NA Kerosene storage cans None NA Paints / thinners / strippers None NA Cleaning solvents None NA Oven cleaners None NA Carpet / upholstery cleaners None NA Other house cleaning products None NA Moth balls None NA Polishes / waxes None NA Insecticides None NA Furniture / floor polish None NA Nail polish / polish remover Used by Occupants No Hairspray Used by Occupants No Cologne / perfume Used by Occupants No Air fresheners Bathroom No Fuel tank (inside building) None NA Wood stove or fireplace None NA New furniture / upholstery None NA EPA Building 2 15 February 211 2

287 New carpeting / flooring None NA Hobbies - glues, paints, etc. None NA Nature of work conducted: 1.) What is produced or package: The building is used for healthcare services for EPA employees, it consists of small doctor/nurse s office. 2.) What chemicals/materials are used? No chemicals are used. 3.) Are MSDS sheets available? none 4.) Ingredients listed in on-site chemicals: None 5.) Chemicals observed on-site: Fantastik cleaner Bleach Handsoap Envirocide surface disinfectant Rubbing alcohol Part V Miscellaneous Items Do any occupants of the building smoke? Yes How often? Daily Last time someone smoked in the building? Not permitted in building. Does the building have an attached garage directly connected to living space? No If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? No Do the occupants of the building have their clothes dry cleaned? Yes If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? No If yes, what types of solvents are used? If yes, are their clothes washed at work? No Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? No If yes, when and where? EPA Building 2 15 February 211 3

288 Part VI Sampling Information Sample Technician: Dyna Krumich Phone number: Sample Source: Indoor Air, Sub-Slab Sampler Type: Stainless Steel Canister (SUMMA) Analytical Method: TO-15 Cert. Laboratory: Accutest See IAQ Report #7 Table 2-1 and 2-2 for Sample information. Were Instructions for Occupants followed? Yes If not, describe modifications: See IAQ Report #7 Figure 5-3 for Sample Locations. Part VII - Meteorological Conditions See IAQ Report #7 Appendix A for Meteorological Data. Was there significant precipitation within 12 hours of (or during) the sampling event?. in. (2/22/11). in. (2/23/11) Average outside temperature on date sampled: 28 F (2/22/11) 32 F (2/23/11) Maximum temperature on date sampled: 45 F Minimum temperature on date sampled: 18 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) EPA Building 2 15 February 211 4

289 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Dyna Krumich/Alanna Garrison Date: 16 September 21 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: EPA Site Building 2 Case #: NA Part I - Occupants Building Address: EPA Site Building 2 Property Contact: Kwong Cho Owner / Renter / other: Owner Contact s Phone: work (732) Building occupants: Children under age 13: Children age 13-18: Adults: 2 Part II Building Characteristics Building type: office Describe building: vinyl siding outside, offices and nurse s station inside Sensitive population: day care / nursing home / hospital / school / other (specify): NA floors - below grade: floors at or above grade: 1 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / other (specify) Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Is there a whole house fan? No EPA Building 2 16 September 21 1

290 Septic system? No Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? No active / passive Sub-slab vapor/moisture barrier in place? Yes Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): None Other stationary sources nearby (gas stations, emission stacks, etc.): 1. Exxon Service Station Edison Township 3115 Woodbridge Ave. 2. Shell Service Station Edison Township 89 RTE 1 S & Post Road 3. Sunoco Service Station Edison Township 188 Woodbridge Ave. 4. Mobil Service Station Edison Township 284 Woodbridge Ave. Heavy vehicular traffic nearby (or other mobile sources): Directly off of Woodbridge Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans None NA Gas-powered equipment None NA Kerosene storage cans None NA Paints / thinners / strippers None NA Cleaning solvents None NA Oven cleaners None NA Carpet / upholstery cleaners None NA Other house cleaning products None NA Moth balls None NA Polishes / waxes None NA Insecticides None NA Furniture / floor polish None NA Nail polish / polish remover Used by Occupants No Hairspray Used by Occupants No Cologne / perfume Used by Occupants No Air fresheners Bathroom No Fuel tank (inside building) None NA Wood stove or fireplace None NA New furniture / upholstery None NA EPA Building 2 16 September 21 2

291 New carpeting / flooring None NA Hobbies - glues, paints, etc. None NA Nature of work conducted: 1.) What is produced or package: The building is used for healthcare services for EPA employees, it consists of small doctor/nurse s office. 2.) What chemicals/materials are used? No chemicals are used. 3.) Are MSDS sheets available? For the Raid Ant/Roach Spray 4.) Ingredients listed in on-site chemicals: None 5.) Chemicals observed on-site: Fantastik cleaner Bleach Handsoap Envirocide surface disinfectant Rubbing alcohol Raid Ant/Roach Spray Part V Miscellaneous Items Do any occupants of the building smoke? Yes How often? Daily Last time someone smoked in the building? Not permitted in building. Does the building have an attached garage directly connected to living space? No If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? No Do the occupants of the building have their clothes dry cleaned? Yes If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? No If yes, what types of solvents are used? If yes, are their clothes washed at work? No Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? No If yes, when and where? EPA Building 2 16 September 21 3

292 Part VI Sampling Information Sample Technician: Dyna Krumich Phone number: Sample Source: Indoor Air, Sub-Slab Sampler Type: Stainless Steel Canister (SUMMA) Analytical Method: TO-15 Cert. Laboratory: Accutest See IAQ Report #7 Table 2-1 and 2-2 for Sample information. Were Instructions for Occupants followed? Yes If not, describe modifications: See IAQ Report #7 Figure 5-3 for Sample Locations. Part VII - Meteorological Conditions See IAQ Report #7 Appendix A for Meteorological Data. Was there significant precipitation within 12 hours of (or during) the sampling event?. in. (9/23/1). in. (9/24/1) Average outside temperature on date sampled: 74 F (9/23/1) 77 F (9/24/1) Maximum temperature on date sampled: 86 F Minimum temperature on date sampled: 66 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) EPA Building 2 16 September 21 4

293

294

295

296 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Dyna Krumich/Kelly Pniewski Date: 15 February 211 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: EPA Site Building 25 Case #: NA Part I - Occupants Building Address: EPA Site Building 25 Property Contact: Kwong Cho Owner / Renter / other: Owner Contact s Phone: work (732) Building occupants: Children under age 13: Children age 13-18: Adults: 25 Part II Building Characteristics Building type: commercial/industrial Describe building: brick outside, offices and warehouse inside (warehouse currently being renovated) Sensitive population: day care / nursing home / hospital / school / other (specify): NA floors - below grade: floors at or above grade: 1 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / other (specify) Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Is there a whole house fan? No Septic system? No EPA Building February 211 1

297 Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? Yes active / passive Sub-slab vapor/moisture barrier in place? Yes Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): None Other stationary sources nearby (gas stations, emission stacks, etc.): 1. Exxon Service Station Edison Township 3115 Woodbridge Ave. 2. Shell Service Station Edison Township 89 RTE 1 S & Post Road 3. Sunoco Service Station Edison Township 188 Woodbridge Ave. 4. Mobil Service Station Edison Township 284 Woodbridge Ave. Heavy vehicular traffic nearby (or other mobile sources): Directly off of Woodbridge Avenue and Old Post Road Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans None NA Gas-powered equipment None NA Kerosene storage cans None NA Paints / thinners / strippers Closet No Cleaning solvents None NA Oven cleaners None NA Carpet / upholstery cleaners None NA Other house cleaning products Kitchen Closet No Moth balls None NA Polishes / waxes None NA Insecticides None NA Furniture / floor polish None NA Nail polish / polish remover Used by Occupants No Hairspray Used by Occupants No Cologne / perfume Used by Occupants No Air fresheners Bathroom No Fuel tank (inside building) None NA Wood stove or fireplace None NA New furniture / upholstery None NA New carpeting / flooring None NA Hobbies - glues, paints, etc. Office Hallway No EPA Building February 211 2

298 Nature of work conducted: 1.) What is produced or package: The building consists of office space, and is used for conferences, meetings, and there if a file/data storage room. 2.) What chemicals/materials are used? No chemicals are used. 3.) Are MSDS sheets available? Not applicable. 4.) Ingredients listed in on-site chemicals: None 5.) Chemicals observed on-site: Paint chips on wall in training center 2 bobcats in Bay B Premium oil-dri floor absorbent Tamp & Set stone asphalt patch Quikrete Portland cement Part V Miscellaneous Items Do any occupants of the building smoke? No How often? Last time someone smoked in the building? hours / days ago Does the building have an attached garage directly connected to living space? No If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? No Do the occupants of the building have their clothes dry cleaned? Yes If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? No If yes, what types of solvents are used? If yes, are their clothes washed at work? No Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? No If yes, when 9/1-12/1 and where? North end of Building EPA Building February 211 3

299 Part VI Sampling Information Sample Technician: Dyna Krumich Phone number: Sample Source: Indoor Air, Sub-Slab Sampler Type: Stainless Steel Canister (SUMMA) Analytical Method: TO-15 Cert. Laboratory: Accutest See IAQ Report #7 Table 2-1 and 2-2 for Sample information. Were Instructions for Occupants followed? Yes If not, describe modifications: Provide Drawing of Sample Location(s) in Building See IAQ Report #7 Figure 5-2 for Sample Locations. Part VII - Meteorological Conditions See IAQ Report #7 Appendix A for Meteorological Data. Was there significant precipitation within 12 hours of (or during) the sampling event?. in. (2/22/11). in. (2/23/11) Average outside temperature on date sampled: 28 F (2/22/11) 32 F (2/23/11) Maximum temperature on date sampled: 45 F Minimum temperature on date sampled: 18 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) EPA Building February 211 4

300 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Dyna Krumich/Alanna Garrison Date: 16 September 21 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: EPA Site Building 25 Case #: NA Part I - Occupants Building Address: EPA Site Building 25 Property Contact: Kwong Cho Owner / Renter / other: Owner Contact s Phone: work (732) Building occupants: Children under age 13: Children age 13-18: Adults: 25 Part II Building Characteristics Building type: commercial/industrial Describe building: brick outside, offices and warehouse inside (warehouse currently being renovated) Sensitive population: day care / nursing home / hospital / school / other (specify): NA floors - below grade: floors at or above grade: 1 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / other (specify) Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Is there a whole house fan? No Septic system? No EPA Building September 21 1

301 Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? Yes active / passive Sub-slab vapor/moisture barrier in place? Yes Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): None Other stationary sources nearby (gas stations, emission stacks, etc.): 1. Exxon Service Station Edison Township 3115 Woodbridge Ave. 2. Shell Service Station Edison Township 89 RTE 1 S & Post Road 3. Sunoco Service Station Edison Township 188 Woodbridge Ave. 4. Mobil Service Station Edison Township 284 Woodbridge Ave. Heavy vehicular traffic nearby (or other mobile sources): Directly off of Woodbridge Avenue and Old Post Road Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans None NA Gas-powered equipment None NA Kerosene storage cans None NA Paints / thinners / strippers Closet No Cleaning solvents None NA Oven cleaners None NA Carpet / upholstery cleaners None NA Other house cleaning products Kitchen Closet No Moth balls None NA Polishes / waxes None NA Insecticides None NA Furniture / floor polish None NA Nail polish / polish remover Used by Occupants No Hairspray Used by Occupants No Cologne / perfume Used by Occupants No Air fresheners Bathroom No Fuel tank (inside building) None NA Wood stove or fireplace None NA New furniture / upholstery None NA New carpeting / flooring None NA Hobbies - glues, paints, etc. Office Hallway No EPA Building September 21 2

302 Nature of work conducted: 1.) What is produced or package: The building consists of office space, and is used for conferences, meetings, and there if a file/data storage room. 2.) What chemicals/materials are used? No chemicals are used. 3.) Are MSDS sheets available? Not applicable. 4.) Ingredients listed in on-site chemicals: None 5.) Chemicals observed on-site: 2 bobcats in Bay B Premium oil-dri floor absorbent Tamp & Set stone asphalt patch Quikrete Portland cement Part V Miscellaneous Items Do any occupants of the building smoke? No How often? Last time someone smoked in the building? hours / days ago Does the building have an attached garage directly connected to living space? No If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? No Do the occupants of the building have their clothes dry cleaned? Yes If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? No If yes, what types of solvents are used? If yes, are their clothes washed at work? No Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? Yes If yes, when Currently and where? North end of Building EPA Building September 21 3

303 Part VI Sampling Information Sample Technician: Dyna Krumich Phone number: Sample Source: Indoor Air, Sub-Slab Sampler Type: Stainless Steel Canister (SUMMA) Analytical Method: TO-15 Cert. Laboratory: Accutest See IAQ Report #7 Table 2-1 and 2-2 for Sample information. Were Instructions for Occupants followed? Yes If not, describe modifications: Provide Drawing of Sample Location(s) in Building See IAQ Report #7 Figure 5-4 for Sample Locations. Part VII - Meteorological Conditions See IAQ Report #7 Appendix A for Meteorological Data. Was there significant precipitation within 12 hours of (or during) the sampling event?. in. (9/23/1). in. (9/24/1) Average outside temperature on date sampled: 74 F (9/23/1) 77 F (9/24/1) Maximum temperature on date sampled: 86 F Minimum temperature on date sampled: 66 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) EPA Building September 21 4

304 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Dyna Krumich/Kelly Pniewski Date: 15 February 211 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: EPA Site Building 29 Case #: NA Part I - Occupants Building Address: EPA Site Building 29 Property Contact: Kwong Cho Owner / Renter / other: Owner Contact s Phone: work (732) Building occupants: Children under age 13: Children age 13-18: Adults: 15 Part II Building Characteristics Building type: office Describe building: brick outside, offices inside Sensitive population: day care / nursing home / hospital / school / other (specify): NA floors - below grade: floors at or above grade: 1 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / wood Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Is there a whole house fan? No Septic system? No EPA Building February 211 1

305 Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? No active / passive Sub-slab vapor/moisture barrier in place? Yes Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): None Other stationary sources nearby (gas stations, emission stacks, etc.): 1. Exxon Service Station Edison Township 3115 Woodbridge Ave. 2. Shell Service Station Edison Township 89 RTE 1 S & Post Road 3. Sunoco Service Station Edison Township 188 Woodbridge Ave. 4. Mobil Service Station Edison Township 284 Woodbridge Ave. Heavy vehicular traffic nearby (or other mobile sources): Directly off of Woodbridge Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans Warehouse No Gas-powered equipment Warehouse No Kerosene storage cans None NA Paints / thinners / strippers Warehouse NA Cleaning solvents Warehouse NA Oven cleaners None NA Carpet / upholstery cleaners None NA Other house cleaning products Office areas/warehouse/labs No Moth balls None NA Polishes / waxes None NA Insecticides None NA Furniture / floor polish None NA Nail polish / polish remover Used by Occupants No Hairspray Used by Occupants No Cologne / perfume Used by Occupants No Air fresheners Bathroom No Fuel tank (inside building) None NA Wood stove or fireplace None NA New furniture / upholstery None NA New carpeting / flooring In new lab area No Hobbies - glues, paints, etc. None NA EPA Building February 211 2

306 Nature of work conducted: 1.) What is produced or package: The building contains a laboratory and warehouse area, hazardous goods are packaged and shipped. 2.) What chemicals/materials are used? See below. 3.) Are MSDS sheets available? 4.) Ingredients listed in on-site chemicals: None 5.) Chemicals observed on-site: Warehouse area next to paint storage area: Sherwin Williams Satin-Plex paint Benjamin Moore Super Hide Latex Primer/Undercoater Roberts Multi-use Adhesive Sealkrete Waterproofing sealer Shaw 5 Pressure Sensitive Adhesive Sheet Rock All Purpose Joint Compund Dependable White Skimcoat; White Latex liquid Durabond D-733 Acrylic Cove Base Adhesive Microscopy Room: Stephens Scientific Resolve Microscope Immersion Oil Ethanol Forklifts parked in immediate area; golfcarts Flammable storage cabinets nearby in cage area (by Room 2 signs) on SE wall Part V Miscellaneous Items Do any occupants of the building smoke? Yes How often? Daily Last time someone smoked in the building? Not permitted in the building Does the building have an attached garage directly connected to living space? No If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? No Do the occupants of the building have their clothes dry cleaned? No If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? No If yes, what types of solvents are used? If yes, are their clothes washed at work? No Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? No If yes, when and where? EPA Building February 211 3

307 Part VI Sampling Information Sample Technician: Dyna Krumich Phone number: Sample Source: Indoor Air, Sub-Slab Sampler Type: Stainless Steel Canister (SUMMA) Analytical Method: TO-15 Cert. Laboratory: Accutest See IAQ Report #7 Table 2-1 and 2-2 for Sample information. Were Instructions for Occupants followed? Yes If not, describe modifications: Provide Drawing of Sample Location(s) in Building See IAQ Report #7 Figure 5-5 for Sample Locations. Part VII - Meteorological Conditions See IAQ Report #7 Appendix A for Meteorological Data. Was there significant precipitation within 12 hours of (or during) the sampling event?. in. (2/22/11). in. (2/23/11) Average outside temperature on date sampled: 28 F (2/22/11) 32 F (2/23/11) Maximum temperature on date sampled: 45 F Minimum temperature on date sampled: 18 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) EPA Building February 211 4

308 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Dyna Krumich/Kelly Pniewski Date: 16 September 21 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: EPA Site Building 29 Case #: NA Part I - Occupants Building Address: EPA Site Building 29 Property Contact: Kwong Cho Owner / Renter / other: Owner Contact s Phone: work (732) Building occupants: Children under age 13: Children age 13-18: Adults: 15 Part II Building Characteristics Building type: office Describe building: brick outside, offices inside Sensitive population: day care / nursing home / hospital / school / other (specify): NA floors - below grade: floors at or above grade: 1 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / wood Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Is there a whole house fan? No Septic system? No EPA Building September 21 1

309 Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? No active / passive Sub-slab vapor/moisture barrier in place? Yes Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): None Other stationary sources nearby (gas stations, emission stacks, etc.): 1. Exxon Service Station Edison Township 3115 Woodbridge Ave. 2. Shell Service Station Edison Township 89 RTE 1 S & Post Road 3. Sunoco Service Station Edison Township 188 Woodbridge Ave. 4. Mobil Service Station Edison Township 284 Woodbridge Ave. Heavy vehicular traffic nearby (or other mobile sources): Directly off of Woodbridge Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans Warehouse No Gas-powered equipment Warehouse No Kerosene storage cans None NA Paints / thinners / strippers Warehouse NA Cleaning solvents Warehouse NA Oven cleaners None NA Carpet / upholstery cleaners None NA Other house cleaning products Office areas/warehouse/labs No Moth balls None NA Polishes / waxes None NA Insecticides None NA Furniture / floor polish None NA Nail polish / polish remover Used by Occupants No Hairspray Used by Occupants No Cologne / perfume Used by Occupants No Air fresheners Bathroom No Fuel tank (inside building) None NA Wood stove or fireplace None NA New furniture / upholstery None NA New carpeting / flooring In new lab area No Hobbies - glues, paints, etc. None NA EPA Building September 21 2

310 Nature of work conducted: 1.) What is produced or package: The building contains a laboratory and warehouse area, hazardous goods are packaged and shipped. 2.) What chemicals/materials are used? See below. 3.) Are MSDS sheets available? 4.) Ingredients listed in on-site chemicals: None 5.) Chemicals observed on-site: Warehouse area next to paint storage area: Sherwin Williams Satin-Plex paint Benjamin Moore Super Hide Latex Primer/Undercoater Roberts Multi-use Adhesive Sealkrete Waterproofing sealer Shaw 5 Pressure Sensitive Adhesive Sheet Rock All Purpose Joint Compund Dependable White Skimcoat; White Latex liquid Durabond D-733 Acrylic Cove Base Adhesive Microscopy Room: Stephens Scientific Resolve Microscope Immersion Oil Ethanol Forklifts parked in immediate area; golfcarts Flammable storage cabinets nearby in cage area (by Room 2 signs) on SE wall Part V Miscellaneous Items Do any occupants of the building smoke? Yes How often? Daily Last time someone smoked in the building? Not permitted in the building Does the building have an attached garage directly connected to living space? No If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? No Do the occupants of the building have their clothes dry cleaned? No If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? No If yes, what types of solvents are used? If yes, are their clothes washed at work? No Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? No If yes, when and where? EPA Building September 21 3

311 Part VI Sampling Information Sample Technician: Dyna Krumich Phone number: Sample Source: Indoor Air, Sub-Slab Sampler Type: Stainless Steel Canister (SUMMA) Analytical Method: TO-15 Cert. Laboratory: Accutest See IAQ Report #7 Table 2-1 and 2-2 for Sample information. Were Instructions for Occupants followed? Yes If not, describe modifications: Provide Drawing of Sample Location(s) in Building See IAQ Report #7 Figure 5-5 for Sample Locations. Part VII - Meteorological Conditions See IAQ Report #7 Appendix A for Meteorological Data. Was there significant precipitation within 12 hours of (or during) the sampling event?. in. (9/23/1). in. (9/24/1) Average outside temperature on date sampled: 74 F (9/23/1) 77 F (9/24/1) Maximum temperature on date sampled: 86 F Minimum temperature on date sampled: 66 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) EPA Building September 21 4

312 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Dyna Krumich/Kelly Pniewski Date: 15 February 211 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: Federal Business Centers Case #: NA Part I - Occupants Building Address: 3 Raritan Center Parkway, Edison, NJ Property Contact: Nicole Visceglia-Rogers Owner / Renter / other: Owner Contact s Phone: work (732) Building occupants: Children under age 13: Children age 13-18: Adults: 3 (~2 in the field) Part II Building Characteristics Building type: Office / industrial Describe building: Office and warehouse Sensitive population: day care / nursing home / hospital / school / other (specify): NA floors - below grade: floors at or above grade: 1 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / other (specify) Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Gas Back-up Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Is there a whole house fan? No FBC 15 February 211 1

313 Septic system? No Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? No active / passive Sub-slab vapor/moisture barrier in place? No Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): None Other stationary sources nearby (gas stations, emission stacks, etc.): None Heavy vehicular traffic nearby (or other mobile sources): Car and truck traffic, loading dock, parking lot Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans None NA Gas-powered equipment None NA Kerosene storage cans None NA Paints / thinners / strippers Warehouse Boiler Room No Cleaning solvents Warehouse No Oven cleaners None NA Carpet / upholstery cleaners None NA Other house cleaning products Warehouse at workstation/bathroom No Moth balls None NA Polishes / waxes Warehouse Boiler Room No Insecticides None NA Furniture / floor polish Warehouse Boiler Room No Nail polish / polish remover Use by Occupants No Hairspray Bathroom No Cologne / perfume Use by Occupants No Air fresheners Bathroom No Fuel tank (inside building) None NA Wood stove or fireplace None NA New furniture / upholstery None NA New carpeting / flooring SW office area No Hobbies - glues, paints, etc. None NA FBC 15 February 211 2

314 Nature of work conducted: 1.) What is produced or package: Office support for real estate operations, renovate spaces in other locations (chemicals are stored here but used in other places) 2.) What chemicals/materials are used? See below 3.) Are MSDS sheets available? Yes. 4.) Ingredients listed in on-site chemicals: 5.) Chemicals observed on-site: Sika latex R Concrete Bording Adhesive &Acrylic Fortifier 3M Hi-strength 9 spray adhesive Master Jet spray lacquer finish Minwax wipe on Poly Minwax Tune Oil Finish Bulls Eye Shallac 44 Henry Cove Base Adhesive Touch n Foam Triple Expanding Sealant DAP 33 Glazing Pro Exterminator Wasp, Hornet & Yellow Jacket Killer Phenoseal vinyl adhesive caulk Miscellaneous household cleaning supplies Krylon Primer & spray paint Superstein s paint (various colors) Benjamin Moore gloss enamel Sunnyside lacquer thinner EZ Denatured Solvent Alcohol 3M safest stripper (paint varnish remover) Imperial Rapid Brush cleaner Proline motor oils Pyroil De-Icer Pyroil Power steering fluid Pyroil white lithium grease Zinsser cover stain Thorolastic Part V Miscellaneous Items Do any occupants of the building smoke? No How often? N/A Last time someone smoked in the building? N/A Does the building have an attached garage directly connected to living space? No If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? No Do the occupants of the building have their clothes dry cleaned? Yes If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? Yes, but not at this location FBC 15 February 211 3

315 If yes, what types of solvents are used? See above If yes, are their clothes washed at work? No Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? No If yes, when and where? Part VI Sampling Information Sample Technician: Dyna Krumich Phone number: Sample Source: Indoor Air, Sub-Slab Sampler Type: Stainless Steel Canister (SUMMA) Analytical Method: TO-15 Cert. Laboratory: Accutest See IAQ Report #7 Table 2-2 for Sample IDs Were Instructions for Occupants followed? Yes If not, describe modifications: See IAQ Report #7 Figure 3-3 for Sample location. Part VII - Meteorological Conditions See IAQ Report #7 Appendix A for Meteorological data. Was there significant precipitation within 12 hours of (or during) the sampling event?.4 in. (2/24/11) 1.39 in. (2/25/11) Average outside temperature on date sampled: 35 F (2/24/11) 48 F (2/25/11) Maximum temperature on date sampled: 6 F Minimum temperature on date sampled: 24 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) FBC 15 February 211 4

316 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Dyna Krumich/Kelly Pniewski Date: 14 September 21 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: Federal Business Centers Case #: NA Part I - Occupants Building Address: 3 Raritan Center Parkway, Edison, NJ Property Contact: Nicole Visceglia-Rogers/Amy Uken Owner / Renter / other: Owner Contact s Phone: work (732) Building occupants: Children under age 13: Children age 13-18: Adults: 3 (~2 in the field) Part II Building Characteristics Building type: Office / industrial Describe building: Office and warehouse Sensitive population: day care / nursing home / hospital / school / other (specify): NA floors - below grade: floors at or above grade: 1 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / other (specify) Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Gas Back-up Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Is there a whole house fan? No FBC 14 September 21 1

317 Septic system? No Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? No active / passive Sub-slab vapor/moisture barrier in place? No Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): None Other stationary sources nearby (gas stations, emission stacks, etc.): None Heavy vehicular traffic nearby (or other mobile sources): Car and truck traffic, loading dock, parking lot Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans None NA Gas-powered equipment None NA Kerosene storage cans None NA Paints / thinners / strippers Warehouse Boiler Room No Cleaning solvents Warehouse No Oven cleaners None NA Carpet / upholstery cleaners None NA Other house cleaning products Warehouse at workstation/bathroom No Moth balls None NA Polishes / waxes Warehouse Boiler Room No Insecticides None NA Furniture / floor polish Warehouse Boiler Room No Nail polish / polish remover Use by Occupants No Hairspray Bathroom No Cologne / perfume Use by Occupants No Air fresheners Bathroom No Fuel tank (inside building) None NA Wood stove or fireplace None NA New furniture / upholstery None NA New carpeting / flooring SW office area No Hobbies - glues, paints, etc. None NA FBC 14 September 21 2

318 Nature of work conducted: 1.) What is produced or package: Office support for real estate operations, renovate spaces in other locations (chemicals are stored here but used in other places) 2.) What chemicals/materials are used? See below 3.) Are MSDS sheets available? Yes. 4.) Ingredients listed in on-site chemicals: 5.) Chemicals observed on-site: Sika latex R Concrete Bording Adhesive &Acrylic Fortifier 3M Hi-strength 9 spray adhesive Master Jet spray lacquer finish Minwax wipe on Poly Minwax Tune Oil Finish Bulls Eye Shallac 44 Henry Cove Base Adhesive Touch n Foam Triple Expanding Sealant DAP 33 Glazing Pro Exterminator Wasp, Hornet & Yellow Jacket Killer Phenoseal vinyl adhesive caulk Miscellaneous household cleaning supplies Krylon Primer & spray paint Superstein s paint (various colors) Benjamin Moore gloss enamel Sunnyside lacquer thinner EZ Denatured Solvent Alcohol 3M safest stripper (paint varnish remover) Imperial Rapid Brush cleaner Proline motor oils Pyroil De-Icer Pyroil Power steering fluid Pyroil white lithium grease Zinsser cover stain Thorolastic Part V Miscellaneous Items Do any occupants of the building smoke? No How often? N/A Last time someone smoked in the building? N/A Does the building have an attached garage directly connected to living space? No If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? No Do the occupants of the building have their clothes dry cleaned? Yes If yes, how often? weekly / monthly / 3-4 times a year FBC 14 September 21 3

319 Do any of the occupants use solvents in work? Yes, but not at this location If yes, what types of solvents are used? See above If yes, are their clothes washed at work? No Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? No If yes, when and where? Part VI Sampling Information Sample Technician: Dyna Krumich Phone number: Sample Source: Indoor Air, Sub-Slab Sampler Type: Stainless Steel Canister (SUMMA) Analytical Method: TO-15 Cert. Laboratory: Accutest See IAQ Report #7 Table 2-2 for Sample IDs Were Instructions for Occupants followed? Yes If not, describe modifications: See IAQ Report #7 Figure 3-3 for Sample location. Part VII - Meteorological Conditions See IAQ Report #7 Appendix A for Meteorological Data. Was there significant precipitation within 12 hours of (or during) the sampling event?.8 in. (9/22/1) Average outside temperature on date sampled: 63 F (9/21/1) 76 F (9/22/1) Maximum temperature on date sampled: 9 F Minimum temperature on date sampled: 51 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) FBC 14 September 21 4

320 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Dyna Krumich/Kelly Pniewski Date: 15 February 211 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: Agilysys, Inc. Case #: NA Part I - Occupants Building Address: 274 Raritan Center Parkway, Edison, NJ Property Contact: Frank Bardecker Owner / Renter / other: Renter Contact s Phone: work (732) Building occupants: Children under age 13: Children age 13-18: Adults: 4-5 Part II Building Characteristics Building type: Office / industrial Describe building: Office and warehouse Sensitive population: Sensitive population: day care / nursing home / hospital / school / other (specify): NA floors - below grade: floors at or above grade: 1 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / other (specify) Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Gas Back-up Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Is there a whole house fan? No Agilysis 15 February 211 1

321 Septic system? No Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? No active / passive Sub-slab vapor/moisture barrier in place? No Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): None Other stationary sources nearby (gas stations, emission stacks, etc.): None Heavy vehicular traffic nearby (or other mobile sources): Car and truck traffic, loading dock, parking lot Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans None NA Gas-powered equipment None NA Kerosene storage cans None NA Paints / thinners / strippers None NA Cleaning solvents None NA Oven cleaners None NA Carpet / upholstery cleaners None NA Other house cleaning products Bathroom/Warehouse No Moth balls None NA Polishes / waxes None NA Insecticides None NA Furniture / floor polish None NA Nail polish / polish remover Use by Occupants No Hairspray Use by Occupants No Cologne / perfume Use by Occupants No Air fresheners Bathroom No Fuel tank (inside building) None NA Wood stove or fireplace None NA New furniture / upholstery None NA New carpeting / flooring None NA Hobbies - glues, paints, etc. None NA Agilysis 15 February 211 2

322 Nature of work conducted: 1.) What is produced or package: Office for life insurance and benefits provider. 2.) What chemicals/materials are used? None. 3.) Are MSDS sheets available? N/A 4.) Ingredients listed in on-site chemicals: N/A 5.) Chemicals observed on-site: None Part V Miscellaneous Items Do any occupants of the building smoke? Yes How often? frequently Last time someone smoked in the building? No smoking allowed in the building. Does the building have an attached garage directly connected to living space? No If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? No Do the occupants of the building have their clothes dry cleaned? No If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? No If yes, what types of solvents are used? N/A If yes, are their clothes washed at work? N/A Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? No If yes, when and where? Part VI Sampling Information Sample Technician: Dyna Krumich Phone number: (732) Sample Source: Indoor Air, Sub-Slab Sampler Type: Stainless Steel Canister (SUMMA) Analytical Method: TO-15 Cert. Laboratory: Accutest Agilysis 15 February 211 3

323 See IAQ Report #7 Table 2-1 and 2-1 for Sample information. Were Instructions for Occupants followed? Yes If not, describe modifications: See IAQ Report #7 Figure 3-3 for Sample location. Part VII - Meteorological Conditions See IAQ Report #7 Appendix A1 for Meteorological data. Was there significant precipitation within 12 hours of (or during) the sampling event?.4 in. (2/24/11) 1.39 in. (2/25/11) Average outside temperature on date sampled: 35 F (2/24/11) 48 F (2/25/11) Maximum temperature on date sampled: 6 F Minimum temperature on date sampled: 24 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) New Jersey Department of Environmental Protection Agilysis 15 February 211 4

324 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Dyna Krumich/Alanna Garrison Date: 14 September 21 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: Agilysys, Inc. Case #: NA Part I - Occupants Building Address: 274 Raritan Center Parkway, Edison, NJ Property Contact: Frank Bardecker Owner / Renter / other: Renter Contact s Phone: work (732) Building occupants: Children under age 13: Children age 13-18: Adults: 4-5 Part II Building Characteristics Building type: Office / industrial Describe building: Office and warehouse Sensitive population: Sensitive population: day care / nursing home / hospital / school / other (specify): NA floors - below grade: floors at or above grade: 1 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / other (specify) Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Gas Back-up Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Is there a whole house fan? No Agilysis 14 September 21 1

325 Septic system? No Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? No active / passive Sub-slab vapor/moisture barrier in place? No Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): None Other stationary sources nearby (gas stations, emission stacks, etc.): None Heavy vehicular traffic nearby (or other mobile sources): Car and truck traffic, loading dock, parking lot Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans None NA Gas-powered equipment None NA Kerosene storage cans None NA Paints / thinners / strippers None NA Cleaning solvents None NA Oven cleaners None NA Carpet / upholstery cleaners None NA Other house cleaning products Bathroom/Warehouse No Moth balls None NA Polishes / waxes None NA Insecticides None NA Furniture / floor polish None NA Nail polish / polish remover Use by Occupants No Hairspray Use by Occupants No Cologne / perfume Use by Occupants No Air fresheners Bathroom No Fuel tank (inside building) None NA Wood stove or fireplace None NA New furniture / upholstery None NA New carpeting / flooring None NA Hobbies - glues, paints, etc. None NA Agilysis 14 September 21 2

326 Nature of work conducted: 1.) What is produced or package: Office for life insurance and benefits provider. 2.) What chemicals/materials are used? None. 3.) Are MSDS sheets available? N/A 4.) Ingredients listed in on-site chemicals: N/A 5.) Chemicals observed on-site: None Part V Miscellaneous Items Do any occupants of the building smoke? Yes How often? frequently Last time someone smoked in the building? No smoking allowed in the building. Does the building have an attached garage directly connected to living space? No If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? No Do the occupants of the building have their clothes dry cleaned? No If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? No If yes, what types of solvents are used? N/A If yes, are their clothes washed at work? N/A Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? No If yes, when and where? Part VI Sampling Information Sample Technician: Dyna Krumich Phone number: (732) Sample Source: Indoor Air, Sub-Slab Sampler Type: Stainless Steel Canister (SUMMA) Analytical Method: TO-15 Cert. Laboratory: Accutest Agilysis 14 September 21 3

327 See IAQ Report #7 Table 2-1 and 2-1 for Sample information. Were Instructions for Occupants followed? Yes If not, describe modifications: See IAQ Report #7 Figure 3-3 for Sample location. Part VII - Meteorological Conditions See IAQ Report #7 Appendix A1 for Meteorological data. Was there significant precipitation within 12 hours of (or during) the sampling event?.8 in. (9/22/1) Average outside temperature on date sampled: 63 F (9/21/1) 76 F (9/22/1) Maximum temperature on date sampled: 9 F Minimum temperature on date sampled: 51 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) New Jersey Department of Environmental Protection Agilysis 14 September 21 4

328 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Dyna Krumich/Kelly Pniewski Date: 15 February 211 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: Bareweb Case #: NA Part I - Occupants Building Address: 28 Raritan Center Parkway, Edison, NJ Property Contact: Mel Goldzweig Owner / Renter / other: Renter Contact s Phone: Building occupants: Children under age 13: Children age 13-18: Adults: Part II Building Characteristics Building type: Office / industrial Describe building: Office and warehouse Sensitive population: Sensitive population: day care / nursing home / hospital / school / other (specify): NA floors - below grade: floors at or above grade: 1 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / other (specify) Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Gas Back-up Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Is there a whole house fan? No Bareweb 15 February 211 1

329 Septic system? No Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? No active / passive Sub-slab vapor/moisture barrier in place? No Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): None Other stationary sources nearby (gas stations, emission stacks, etc.): None Heavy vehicular traffic nearby (or other mobile sources): Car and truck traffic, loading dock, parking lot Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans None NA Gas-powered equipment None NA Kerosene storage cans None NA Paints / thinners / strippers None NA Cleaning solvents None NA Oven cleaners None NA Carpet / upholstery cleaners None NA Other house cleaning products None NA Moth balls None NA Polishes / waxes None NA Insecticides None NA Furniture / floor polish None NA Nail polish / polish remover None NA Hairspray None NA Cologne / perfume None NA Air fresheners None NA Fuel tank (inside building) None NA Wood stove or fireplace None NA New furniture / upholstery None NA New carpeting / flooring None NA Hobbies - glues, paints, etc. None NA Bareweb 15 February 211 2

330 Nature of work conducted: 1.) What is produced or package: N/A 2.) What chemicals/materials are used? N/A 3.) Are MSDS sheets available? N/A 4.) Ingredients listed in on-site chemicals: N/A 5.) Chemicals observed on-site: N/A Part V Miscellaneous Items Do any occupants of the building smoke? Yes How often? N/A Last time someone smoked in the building? Not allowed to smoke inside the building. Does the building have an attached garage directly connected to living space? Warehouse/Bay door If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? No Do the occupants of the building have their clothes dry cleaned? No If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? N/A If yes, what types of solvents are used? N/A If yes, are their clothes washed at work? N/A Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? No If yes, when and where? Part VI Sampling Information Sample Technician: Dyna Krumich Phone number: (732) Sample Source: Indoor Air, Sub-Slab Sampler Type: Stainless Steel Canister (SUMMA) Analytical Method: TO-15 Cert. Laboratory: Accutest See IAQ Report #7 Table 2-1 and 2-2 for Sample information. Bareweb 15 February 211 3

331 Were Instructions for Occupants followed? Yes If not, describe modifications: Provide Drawing of Sample Location(s) in Building See IAQ Report #7 Figure 3-3 for Sample Locations. Part VII - Meteorological Conditions See IAQ Report #7 Appendix A1 for Meteorological Data. Was there significant precipitation within 12 hours of (or during) the sampling event?.4 in. (2/24/11) 1.39 in. (2/25/11) Average outside temperature on date sampled: 35 F (2/24/11) 48 F (2/25/11) Maximum temperature on date sampled: 6 F Minimum temperature on date sampled: 24 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) Bareweb 15 February 211 4

332 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Dyna Krumich/Alanna Garrison Date: 14 September 21 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: Bareweb Case #: NA Part I - Occupants Building Address: 28 Raritan Center Parkway, Edison, NJ Property Contact: Mel Goldzweig Owner / Renter / other: Renter Contact s Phone: Building occupants: Children under age 13: Children age 13-18: Adults: Part II Building Characteristics Building type: Office / industrial Describe building: Office and warehouse Sensitive population: Sensitive population: day care / nursing home / hospital / school / other (specify): NA floors - below grade: floors at or above grade: 1 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / other (specify) Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Gas Back-up Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Is there a whole house fan? No Bareweb 14 September 21 1

333 Septic system? No Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? No active / passive Sub-slab vapor/moisture barrier in place? No Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): None Other stationary sources nearby (gas stations, emission stacks, etc.): None Heavy vehicular traffic nearby (or other mobile sources): Car and truck traffic, loading dock, parking lot Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans None NA Gas-powered equipment None NA Kerosene storage cans None NA Paints / thinners / strippers None NA Cleaning solvents None NA Oven cleaners None NA Carpet / upholstery cleaners None NA Other house cleaning products None NA Moth balls None NA Polishes / waxes None NA Insecticides None NA Furniture / floor polish None NA Nail polish / polish remover None NA Hairspray None NA Cologne / perfume None NA Air fresheners None NA Fuel tank (inside building) None NA Wood stove or fireplace None NA New furniture / upholstery None NA New carpeting / flooring None NA Hobbies - glues, paints, etc. None NA Bareweb 14 September 21 2

334 Nature of work conducted: 1.) What is produced or package: N/A 2.) What chemicals/materials are used? N/A 3.) Are MSDS sheets available? N/A 4.) Ingredients listed in on-site chemicals: N/A 5.) Chemicals observed on-site: N/A Part V Miscellaneous Items Do any occupants of the building smoke? Yes How often? N/A Last time someone smoked in the building? Not allowed to smoke inside the building. Does the building have an attached garage directly connected to living space? Warehouse/Bay door If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? No Do the occupants of the building have their clothes dry cleaned? No If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? N/A If yes, what types of solvents are used? N/A If yes, are their clothes washed at work? N/A Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? No If yes, when and where? Part VI Sampling Information Sample Technician: Dyna Krumich Phone number: (732) Sample Source: Indoor Air, Sub-Slab Sampler Type: Stainless Steel Canister (SUMMA) Analytical Method: TO-15 Cert. Laboratory: Accutest Bareweb 14 September 21 3

335 See IAQ Report #7 Table 2-1 and 2-2 for Sample information. Were Instructions for Occupants followed? Yes If not, describe modifications: Provide Drawing of Sample Location(s) in Building See IAQ Report #7 Figure 3-3 for Sample Locations. Part VII - Meteorological Conditions See IAQ Report #7 Appendix A1 for Meteorological Data. Was there significant precipitation within 12 hours of (or during) the sampling event?.8 in. (9/22/1) Average outside temperature on date sampled: 63 F (9/21/1) 76 F (9/22/1) Maximum temperature on date sampled: 9 F Minimum temperature on date sampled: 51 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) Bareweb 14 September 21 4

336 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Dyna Krumich/Kelly Pniewski Date: 15 February 211 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: Fabrictex LLC Case #: NA Part I - Occupants Building Address: 278 Raritan Center Parkway, Edison, NJ Property Contact: Georgette Dwyer Owner / Renter / other: Renter Contact s Phone: work (732) Building occupants: Children under age 13: Children age 13-18: Adults: 1-2 Part II Building Characteristics Building type: Office / industrial Describe building: Office and warehouse Sensitive population: Sensitive population: day care / nursing home / hospital / school / other (specify): NA floors - below grade: floors at or above grade: 1 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / other (specify) Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Gas Back-up Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Is there a whole house fan? No Fabrictex 15 February 211 1

337 Septic system? No Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? No active / passive Sub-slab vapor/moisture barrier in place? No Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): None Other stationary sources nearby (gas stations, emission stacks, etc.): None Heavy vehicular traffic nearby (or other mobile sources): Car and truck traffic, loading dock, parking lot Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans None NA Gas-powered equipment None NA Kerosene storage cans None NA Paints / thinners / strippers None NA Cleaning solvents None NA Oven cleaners None NA Carpet / upholstery cleaners None NA Other house cleaning products None NA Moth balls None NA Polishes / waxes None NA Insecticides None NA Furniture / floor polish None NA Nail polish / polish remover None NA Hairspray None NA Cologne / perfume Use by Occupants No Air fresheners Bathroom No Fuel tank (inside building) None NA Wood stove or fireplace None NA New furniture / upholstery None NA New carpeting / flooring None NA Hobbies - glues, paints, etc. None NA Fabrictex 15 February 211 2

338 Nature of work conducted: 1.) What is produced or package: Embroidery Stablizer 2.) What chemicals/materials are used? Fabric paper 3.) Are MSDS sheets available? 4.) Ingredients listed in on-site chemicals: 5.) Chemicals observed on-site: Part V Miscellaneous Items Do any occupants of the building smoke? No How often? N/A Last time someone smoked in the building? N/A Does the building have an attached garage directly connected to living space? No If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? No Do the occupants of the building have their clothes dry cleaned? Yes If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? Yes, but not at this location If yes, what types of solvents are used? See above If yes, are their clothes washed at work? No Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? Yes If yes, when and where? Part VI Sampling Information Sample Technician: Dyna Krumich Phone number: Sample Source: Indoor Air, Sub-Slab Sampler Type: Stainless Steel Canister (SUMMA) Analytical Method: TO-15 Cert. Laboratory: Accutest See IAQ Report #7 Table 2-1 and 2-2 for Sample information. Fabrictex 15 February 211 3

339 Were Instructions for Occupants followed? Yes If not, describe modifications: Provide Drawing of Sample Location(s) in Building See IAQ Report #7 Figure 3-3 for Sample Locations. Part VII - Meteorological Conditions See IAQ Report #7 Appendix A1 for Meteorological Data. Was there significant precipitation within 12 hours of (or during) the sampling event?.4 in. (2/24/11) 1.39 in. (2/25/11) Average outside temperature on date sampled: 35 F (2/24/11) 48 F (2/25/11) Maximum temperature on date sampled: 6 F Minimum temperature on date sampled: 24 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) Fabrictex 15 February 211 4

340 New Jersey Department of Environmental Protection INDOOR AIR BUILDING SURVEY and SAMPLING FORM Preparer s name: Dyna Krumich/Alanna Garrison Date: 14 September 21 Preparer s affiliation: Weston Solutions, Inc. Phone #: Site Name: Fabrictex LLC Case #: NA Part I - Occupants Building Address: 278 Raritan Center Parkway, Edison, NJ Property Contact: Georgette Dwyer Owner / Renter / other: Renter Contact s Phone: work (732) Building occupants: Children under age 13: Children age 13-18: Adults: 1-2 Part II Building Characteristics Building type: Office / industrial Describe building: Office and warehouse Sensitive population: Sensitive population: day care / nursing home / hospital / school / other (specify): NA floors - below grade: floors at or above grade: 1 Depth of basement below grade surface: NA. Basement size: NA Basement floor construction: concrete / dirt / floating / stone / other (specify): NA Foundation walls: poured concrete / cinder blocks / stone / other (specify) Basement sump present? No Sump pump? No Water in sump? No Type of heating system (circle all that apply): hot air circulation hot air radiation wood steam radiation heat pump hot water radiation kerosene heater electric baseboard other (specify): Gas Back-up Type of ventilation system (circle all that apply): central air conditioning mechanical fans bathroom ventilation fans individual air conditioning units kitchen range hood fan outside air intake other (specify): Type of fuel utilized (circle all that apply): Natural gas / electric / fuel oil / wood / coal / solar / kerosene Are the basement walls or floor sealed with waterproof paint or epoxy coatings? No Is there a whole house fan? No Fabrictex 14 September 21 1

341 Septic system? No Irrigation/private well? No Type of ground cover outside of building: grass / concrete / asphalt / other (specify) Existing subsurface depressurization (radon) system in place? No active / passive Sub-slab vapor/moisture barrier in place? No Type of barrier: Part III - Outside Contaminant Sources NJDEP contaminated site (1-ft. radius): None Other stationary sources nearby (gas stations, emission stacks, etc.): None Heavy vehicular traffic nearby (or other mobile sources): Car and truck traffic, loading dock, parking lot Part IV Indoor Contaminant Sources Identify all potential indoor sources found in the building (including attached garages), the location of the source (floor and room), and whether the item was removed from the building 48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items should be completed at least 24 hours prior to the commencement of the indoor air sampling event. Potential Sources Location(s) Removed (Yes / No / NA) Gasoline storage cans None NA Gas-powered equipment None NA Kerosene storage cans None NA Paints / thinners / strippers None NA Cleaning solvents None NA Oven cleaners None NA Carpet / upholstery cleaners None NA Other house cleaning products None NA Moth balls None NA Polishes / waxes None NA Insecticides None NA Furniture / floor polish None NA Nail polish / polish remover None NA Hairspray None NA Cologne / perfume Use by Occupants No Air fresheners Bathroom No Fuel tank (inside building) None NA Wood stove or fireplace None NA New furniture / upholstery None NA New carpeting / flooring None NA Hobbies - glues, paints, etc. None NA Fabrictex 14 September 21 2

342 Nature of work conducted: 1.) What is produced or package: Embroidery Stablizer 2.) What chemicals/materials are used? Fabric paper 3.) Are MSDS sheets available? 4.) Ingredients listed in on-site chemicals: 5.) Chemicals observed on-site: Part V Miscellaneous Items Do any occupants of the building smoke? No How often? N/A Last time someone smoked in the building? N/A Does the building have an attached garage directly connected to living space? No If so, is a car usually parked in the garage? No Are gas-powered equipment or cans of gasoline/fuels stored in the garage? No Do the occupants of the building have their clothes dry cleaned? Yes If yes, how often? weekly / monthly / 3-4 times a year Do any of the occupants use solvents in work? Yes, but not at this location If yes, what types of solvents are used? See above If yes, are their clothes washed at work? No Have any pesticides/herbicides been applied around the building or in the yard? No If so, when and which chemicals? Has there ever been a fire in the building? No If yes, when? Has painting or staining been done in the building in the last 6 months? Yes If yes, when and where? Part VI Sampling Information Sample Technician: Dyna Krumich Phone number: Sample Source: Indoor Air, Sub-Slab Sampler Type: Stainless Steel Canister (SUMMA) Analytical Method: TO-15 Cert. Laboratory: Accutest See IAQ Report #7 Table 2-1 and 2-2 for Sample information. Fabrictex 14 September 21 3

343 Were Instructions for Occupants followed? Yes If not, describe modifications: Provide Drawing of Sample Location(s) in Building See IAQ Report #7 Figure 3-3 for Sample Locations. Part VII - Meteorological Conditions See IAQ Report #7 Appendix A1 for Meteorological Data. Was there significant precipitation within 12 hours of (or during) the sampling event?.8 in. (9/22/1) Average outside temperature on date sampled: 63 F (9/21/1) 76 F (9/22/1) Maximum temperature on date sampled: 9 F Minimum temperature on date sampled: 51 F Part VIII General Observations Provide any information that may be pertinent to the sampling event and may assist in the data interpretation process. (NJDEP 1997; NHDES 1998; VDOH 1993; MassDEP 22; NYSDOH 25; CalEPA 25) Fabrictex 14 September 21 4

344 Appendix G Building 16 December 9th, 211 Progress Report

345 13 Research Lane, Suite 2 Guelph, Ontario, Canada N1G 5G3 PH FAX December 9, 211 Project TR28A Anthony Cinque Case Manager NJDEP Bureau of Case Management 41 East State Street Trenton, NJ, 8625 Subject: Remedial Progress Report, Passive Sub-Slab Venting System, 16 Fieldcrest Avenue, Former Raritan Arsenal, Edison, New Jersey. Dear Mr. Cinque: This letter was prepared by Geosyntec Consultants, Inc. (Geosyntec) for the U.S. Army Corps of Engineers (USACE) under subcontract to Weston Solutions Inc. (Weston), and provides an update regarding the operation of the passive sub-slab venting system at 16 Fieldcrest Avenue in Edison, New Jersey (the Site). The system was installed in June 28 as a pre-emptive mitigation measure, despite the fact that indoor air concentrations do not exceed the New Jersey Department of Environmental Protection (NJDEP) Indoor Air Screening Levels (IASLs) for volatile organic compounds (VOCs), primarily trichloroethene (TCE), tetrachloroethene (PCE), and cis-1,2-dichloroethene (cdce), which are present in soil gas and groundwater beneath the building. Historic sub-slab vapor concentrations in some areas have been greater than ten times the NJDEP soil gas screening levels (SGSLs), in which case the NJDEP Vapor Intrusion Guidance (VIG) recommends either on-going monitoring or pre-emptive mitigation to provide protection against potential future exposures attributable to subsurface vapor intrusion to indoor air in this scenario. Geosyntec installed a passive venting system consisting of six vent pipes with wind-driven turbines at the locations shown in Figure 1. Performance monitoring reports were submitted on March 17, 29 (Geosyntec, 29a), August 2, 29 (Geosyntec, 29b), and December 15, 29 (Geosyntec, 29c). The December 29 report also requested permission to apply site-specific soil gas screening levels (SGSLs). NJDEP replied via a letter of March 8, 21 (NJDEP, 21) indicating acceptance of SGSLs of 31 micrograms per cubic meter ( g/m 3 ) for TCE and 1 g/m 3 for PCE. Although indoor air concentrations remained below the NJDEP IASLs, a solar powered fan was installed in vent pipe PVE-3 to increase the flow rate of vapors extracted. Previous vent-pipe monitoring showed this location had the highest sub-slab vapor concentrations of TCE (up to approximately 1, g/m 3, compared to a site-specific screening level of 35 g/m 3 ). All

346 Anthony Cinque Page 2 of 7 December 9, 211 other vent pipe locations have TCE concentrations that are below the threshold of 1 times the SGSL (see Table 1). The upgrade to a solar powered fan was completed voluntarily by USACE on March 4, 21. The May 12, 21 progress report (Geosyntec, 21) 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, 29 and March 18, 21. This letter specifically covers the period from March 18, 21 to the most recent monitoring event of November 4 to 16, 211, which will be referred to as the reporting period. 1 METHODS 1.1 Flow Monitoring For the solar-powered vent pipe (PVE-3), vacuum in the vent pipe was monitored using a Greywolf Zephyr II+ datalogging micromanometer, which was set up to record the vacuum every 1 minutes during two intervals during the reporting period (March 4 to June 7, 21 and March 21 to September 3, 211. The average measured vacuum was multiplied by the specific capacity of PVE-3 (14 liters per minute per inch of water column vacuum [L/min/in-H 2 O]) measured after installation (Geosyntec, 29a) to calculate the corresponding flow rate. For the wind-driven vent pipes, the flow rate was calculated as the product of the average windspeed, the specific capacity and the turbine performance factor as described in the first monitoring report (Geosyntec, 29a). Wind-speed data for previous reporting periods was obtained from the Linden Municipal Airport; however, Linden Municipal Airport stopped reporting wind-speed data August 13 th 21; therefore, from March 18, 21 to November 16 th 211, wind-speed data was obtained from the Newark Airport. 1.2 VOC Concentration Monitoring Indoor air and vent pipe concentrations were monitored from November 2 to November 16, 211 using Waterloo Membrane Samplers (WMS, formerly referred to as polydimethylsiloxane [PDMS] samplers), which have been described in previous project correspondence (Geosyntec, 29a), and approved for use as a stand-alone monitoring method (NJDEP, 29). The WMS Samplers were deployed within each vent pipe and at a nearby indoor location about 3 to 5 feet above the floor. Two outdoor air samplers were deployed to assess the background outdoor air concentrations. One duplicate indoor air sample and a trip blank were collected for quality assurance and quality control (QA/QC) purposes. The WMS samplers were analyzed for the site specific compounds of concern (TCE, PCE, and cdce) by Air Toxics of Folsom, California, a specialty laboratory for air analysis.

347 Anthony Cinque Page 3 of 7 December 9, 211 A photoionization detector (PID) was also used for periodic field screening of the vent-pipe vapors (March 11, 18, 25, April 23, and September 3, 21 as well as March 21 and November 2, 211). A ppbrae Plus PID was used during all monitoring events. Prior to field screening, the calibration of the ppbrae Plus was checked using a 1 parts per million by volume (ppm v ) isobutylene standard and by screening ambient air through a charcoal filter to zero the meter. 1.3 VOC Mass Removal Rates Mass removal rates were calculated for each sub-slab vent pipe by multiplying the average of the initial and ending VOC concentrations for each of the target analytes (TCE, PCE, and cdce) from each vent pipe by the volume of air removed over the monitoring period. The volume of air removed was calculated by multiplying the calculated average vent pipe flow rate by the duration of the reporting period (March 18, 21 to November 16, 211). Historic concentrations measured in the vent-pipes have been gradually declining (described further below); therefore, periodic concentration measurements and average concentrations over the monitoring period are considered sufficient to use for calculations of mass removal over time. 2 RESULTS 2.1 Solar Powered Fan Performance Monitoring Results Prior to the installation of the solar powered fan, the average extraction rate from vent pipe PVE- 3 was.13 liters per minute (L/min, [Geosyntec, 29a]). This value was calculated by multiplying the annual average wind speed of 3.1 miles per hour (mph) by the specific capacity (14 L/min/inH 2 O) and the turbine performance factor (.3 inches of water column vacuum per unit wind speed in miles per hour [in-h2o/mph]). After the installation of the solar powered fan, the average induced vent pipe vacuum has been about.14 in. H 2 O (Figure 2), which corresponds to an average extraction flow rate of 1.96 L/min, as is shown in Figure 3. Therefore, the installation of the solar powered fan increased the vapor extraction flow rate in vent pipe PVE-3 by about a factor of about 15 (1.96 L/min.13 L/min = 15). PID measurements recorded from vent pipe PVE-3 since the installation of the solar powered fan are shown in Figure 2. The PID measurements recorded during the reporting period were 5.3 and 1.3 ppm v. With the exception of the second PID reading in Figure 2, the PID readings indicate a decreasing trend in the concentrations of total VOCs within the vent pipe.

348 Anthony Cinque Page 4 of 7 December 9, VOC Concentrations in Indoor and Outdoor Air The results from the indoor and outdoor air samples are summarized in the Table below and the laboratory reports are provided in Attachment 1. A summary of the indoor and outdoor air sample results collected to date are provided in Figure 4 and TCE and PCE concentration time trend plots are provided in Attachment 2. The results from the November monitoring event indicate that no compounds were detected above the laboratory method detection limit (MDL) in the indoor or outdoor air samples. Therefore, all sample concentrations are below the NJDEP non-residential IASLs. The reporting limits are lower than the IASLs by a factor of about 4 or more, which is adequate to address expected ranges of data bias and variability for 2-week duration samples. Notes: U - analyte not detected; associated value is reporting limit *NJDEP Non-Residential Indoor Air Screening Level 2.3 VOC Concentrations in Vent Pipes The results from the vent pipe samples are summarized in the Table below and the laboratory reports are provided in Attachment 1. A summary of the vent pipe sample results collected to date is provided in Figure 5 and Table 1 and TCE and PCE concentration time trend plots are provided in Attachment 2. Generally, the TCE and PCE concentrations in the vent pipe samples were lower than the previous monitoring results, as shown in the time-trend plots in Attachment 2. All of the vent-pipe concentrations were below the threshold of 1 times the site-specific SGSLs in the most recent sampling event. Notes: U - analyte not detected; associated value is reporting limit *1X site specific soil gas screening level