25008_North Hills Expansion_VIA_20240216

TABLE OF CONTENTS

1.0 GENERAL INFORMATION .................................................................................... 1
2.0 VIMS CONSTRUCTION .......................................................................................... 2
2.1 VIMS Design Changes ......................................................................................... 2 2.2 VIMS Construction Inspections ............................................................................. 2
2.3 VIMS Influence Testing ........................................................................................ 3 3.0 PRE-OCCUPANCY ANALYTICAL TESTING ........................................................ 3
3.1 Indoor Air Sample Collection ................................................................................ 4 3.2 Sub-Slab Soil Gas Sample Collection .................................................................. 5 4.0 SUMMARY OF LABORATORY ANALYTICAL RESULTS .................................... 6
4.1 Indoor Air Sampling Results ................................................................................. 6
4.2 Soil Gas Sampling Results ................................................................................... 7 4.3 Risk Evaluation Methodology and Results ........................................................... 7 5.0 QUALITY ASSURANCE ....................................................................................... 11
6.0 SUMMARY AND CONCLUSIONS ....................................................................... 11

FIGURES
Figure 1 Topographic Site Map
Figure 2 Site Redevelopment Plan
Figure 3 As-Built VIMS Monitoring Network
Figure 4 As-Built VIMS Building W
Figure 5 Exposure Units

TABLES
Table 1 Sub-Slab Depressurization Influence Results
Table 2 Monitoring Point and Indoor Air Sample Summary
Table 3 Chemical Constituents Analyzed in Indoor Air
Table 4 Chemical Constituents Analyzed in Soil Gas
Table 5 Pre-Occupancy Indoor Air/Soil Gas Testing Risk Assessment Summary

APPENDICES
Appendix A VIMS Inspection Logs
Appendix B Indoor Air Building Survey and Sampling Form
Appendix C Field Notes
Appendix D Laboratory Analytical Reports and Chain-of-Custody Records for
Indoor/Ambient Air
Appendix E Laboratory Analytical Reports and Chain-of-Custody Records for
Sub-Slab Soil Gas Samples
Appendix F Indoor Air and Sub-Slab Soil Gas Vapor Intrusion Risk Calculations

1.0 GENERAL INFORMATION

The North Hills Expansion Brownfields property (NHX) occupies 8.63 acres located at North Hills Mall on Lassiter Mill Road in Raleigh, North Carolina (Figure 1). Data collected during assessment activities associated with a nearby Brothers Cleaners dry cleaning operation and a nearby Exxon gas station indicate that groundwater at NHX has been impacted by
releases of petroleum and chlorinated volatile organic compounds (VOCs) originating from
these sites. Assessment activities conducted in association with the dry cleaners by the North Carolina Department of Environmental Quality (DEQ) Dry-Cleaning Solvent Cleanup Act Program have identified VOCs in soil gas at properties adjacent to NHX. In May 2021, sub-slab soil gas sampling activities were conducted at NHX, which are summarized in a
Soil Gas Assessment Report, dated June 23, 2021, and authored by Mid-Atlantic
Associates, Inc. (Mid-Atlantic). The presence and concentrations of the VOCs detected in soil gas and groundwater on and near NHX suggest that a vapor encroachment condition exists at the site. Therefore, a Vapor Intrusion Mitigation System (VIMS) has been installed in all new buildings constructed at NHX, including Buildings W and P, which are the subjects
of this report.
The VIMS was constructed in accordance with the Vapor Intrusion Mitigation System Design
Submittal, Revision 3 dated December 21, 2021 (VIMS Plan), which was approved by the Brownfields Program (now known as Brownfields Redevelopment Section (BRS)) on
December 29, 2021. Section 4 of the VIMS Plan outlines the Post-Construction/Pre-Occupation System Effectiveness Testing requirements that employ a sequential sampling approach where the initial sampling is limited to sampling the 21 sub-slab monitoring points included in the VIMS design (there are 22 monitoring points, but the DEQ-approved VIMS Plan does not require sampling of MP-14 located in the fire service access elevators (FSAE)
room) and indoor air sampling would only be conducted if/where the sub-slab soil gas testing results indicated it was warranted. Subsequent to DEQ approval of the VIMS Plan, and in consultation with the BRS, the Prospective Developer elected to include indoor air sampling to the initial pre-occupancy testing regime in order to expedite BRS occupancy approval.
Addendum 1 to the VIMS Plan, dated May 25, 2023, detailed the additional activities
associated with the indoor air sampling and was approved by the BRS on June 22, 2023. The NHX redevelopment involves the construction of five structures known as Building P (parking), Buildings U, T, Y (commercial office) and Building W (mixed use retail and residential) (Figure 2). There are VIMS components associated with each of these
buildings. Pre-occupancy testing was conducted at Buildings P (partial), U, T and Y in June 2023 and is detailed in the August 9, 2023, Post-Construction/Pre-Occupancy VIMS
Report. In a letter dated September 11, 2023, the BRS approved occupancy of these buildings.
Building W is scheduled for occupancy in February 2024. Construction of Building W and the northern portion of Building P has recently been completed sufficiently to conduct post-construction/pre-occupancy sampling. The results of this sampling are detailed in this report. The overall objective of this assessment was to 1) evaluate if vapor intrusion is occurring which could pose unacceptable risk to building occupants, 2) support a
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decision regarding occupancy of the buildings, and 3) to determine if the VIMS for Building W could be operated in passive mode without active use of depressurization fans.

2.0 VIMS CONSTRUCTION
Section 3 of the VIMS Plan outlines quality control and quality assurance measures required to assure the VIMS will operate effectively. The following is a summary of construction-related activities associated with the VIMS. 2.1 VIMS Design Changes
As construction has progressed, design changes to the buildings have resulted in changes to the sub-slab monitoring point network (Figure 3). For the Building W and the northern portion of Building P, the following monitoring point changes occurred:
Monitoring Point Location Change Reason MP-2 North Elevator Pit Eliminated Elevator does not start at ground level, but
rather two parking garage levels above
ground level MP-22 Leasing Office Moved Original location was changed to an exterior escalator
There were no floorplan or other building construction changes that necessitated
modifications to the VIMS pit, piping or riser locations (Figure 4). The VIMS was constructed in general accordance with the design. 2.2 VIMS Construction Inspections

In accordance with the VIMS Plan, inspections of the under-construction VIMS were conducted at key times. The general contractor for the construction of the building was Brasfield & Gorrie (B&G). The VIMS was constructed by Buckeye Elm, a sub-contractor to B&G. The vapor barrier used for this project was MonoShield, a sheet-based barrier with
spray applied seals at seams, edges and penetrations. Buckeye Elm is a qualified
contractor certified by the manufacturer (Land Science/Regenesis) for the installation of MonoShield and conducted smoke testing as an integral part of the installation activities. When each inspection was conducted, an inspection log was completed (Appendix A).
Each inspection log contains a checklist, notes describing the inspections, and photographs.
Where the depressurization system was constructed (Building W), inspections were conducted of the gravel layer, vapor collection pits and the sub-slab piping prior to placement
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of the MonoShield vapor barrier. For all areas with vapor mitigation infrastructure, inspections were also conducted after placement and during smoke testing of the
MonoShield but prior to pouring the concrete floor. In total, 16 inspections were conducted
during the construction of the VIMS for Building W and the portion of Building P near the North Elevator Lobby. 2.3 VIMS Influence Testing

The portion of the VIMS that includes sub-slab depressurization is located at Building W (the location associated with Building P is barrier only VIMS). The depressurization area has two plenums each equipped with one collection pit and one fan. The influence testing was conducted to demonstrate that the VIMS could provide acceptable depressurization
beneath the Building W floor slab. It was conducted after the installation of the concrete
floors and monitoring points, but prior to the completion of the risers. To test the influence of the sub-slab depressurization system, one temporary fan was placed on the riser stubs and activated. With a single fan running, the pressure differential between the sub-slab and the interior space directly above the monitoring point was measured. These measurements
were recorded at three locations (MP-19, 20 and 22, Figure 4) using a TSI DP Calc meter.
The design goal is to achieve a -4 pascal (pa) or greater pressure differential across the slab (less pressure below slab than above). During this test, one fan was operational at a time and switched from one plenum to the other. The data showed differential pressures ranging from -3.7 pa to -30.4 pa. A follow up test was conducted on January 13, 2024, with
a fan operational on both plenums. During this test, influence ranged from -47.0 pa to -92.0
pa (Table 1). These results, with both fans operational, indicate that the design goal was achieved at all three monitoring points.
3.0 PRE-OCCUPANCY ANALYTICAL TESTING
The objective of this testing was to provide pre-occupancy data from Building W and the northern portion of Building P to support evaluation of possible vapor intrusion risks and, based on those risks, to provide the basis for approval for building occupancy. As detailed
in the VIMS Plan and Addendum 1, pre-occupancy data consists of testing paired sub-slab soil gas and indoor air for the presence of VOCs by EPA Method TO-15. The evaluation included collection of five paired indoor air/sub-slab soil gas samples, one ambient outdoor air sample, one duplicate indoor air sample and one duplicate sub-slab
soil gas sample. Table 2 provides summary information for all sampling points and Figure 3 illustrates sample locations. Sampling was performed in general accordance with the
Vapor Intrusion Mitigation System Design Submittal, Revision 3, including Addendum 1, as well as the following published documents:
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 NCDEQ, Brownfields Redevelopment Section, Vapor Intrusion Assessment Work
Plan & Report Checklist (February 2023);
 NCDEQ, Inactive Hazardous Sites Branch, Guidelines for Assessment and
Cleanup of Contaminated Sites (September 2022);
 NCDEQ, Division of Waste Management, Vapor Intrusion Guidance (March 2018);
and
 The Interstate Technology & Regulatory Council Vapor Intrusion Mitigation Training Team Technical Resources for Vapor Mitigation Training (December
2020).
All indoor air and sub-slab soil gas samples were co-located and collected contemporaneously; however, the sampling was sequenced such that the indoor air samples were collected just prior to the soil gas samples. This sequencing prevented the
opening and purging of the sub-slab monitoring points required for the sub-slab soil gas
sampling from influencing indoor air test results. The VIMS was operational when the indoor air samples were collected. The VIMS was not operational when the sub-slab soil gas samples were collected.
3.1 Indoor Air Sample Collection
On January 10, 2024, Mid-Atlantic conducted site reconnaissance to identify potential sources (materials and activities) of indoor air VOC contaminants inside relevant portions of Buildings W and P. The objective was to differentiate VOCs detected in indoor air
associated with construction activities versus possible vapor intrusion sources. The results
of the survey are included in a respective Indoor Air Building Survey and Sampling Form attached in Appendix B. During the performance of the survey, small quantities (<5 gallons) of latex paint and joint compound were found in the retail space, leasing area and North Elevators Lobby. Minor painting and finishing associated with typical construction
activities had been performed throughout the building. Propane-powered equipment was
in the kitchen area. The HVAC system for Building W was operational at the time of sampling. On January 12-13, 2024, Mid-Atlantic mobilized to the site to collect five indoor air samples
(IA-1, 19, 20, 21 and 22) and one duplicate sample (IA-DUP, a duplicate of IA-19)
(Appendix C). These sample locations, along with the location of one outdoor air sample (Ambient) are summarized in Table 2 and shown in Figures 3 and 4. During this sampling, the building was kept locked to prevent access to the testing areas. Paint-like odors were noticeable in the vicinity of the IA-19 location at the start of sampling. The GC confirmed
that baseboard had been glued to the wall earlier in the day in the retail area (near IA-19).
The Safety Data Sheet for the adhesive used in this area is included in Appendix B. The procedures used to collect these samples are described in detail in Addendum 1 to the VIMS Plan.
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All indoor air samples were collected using laboratory-supplied 6-liter, individually certified, stainless-steel Summa canisters and flow regulators designed to restrict the maximum flow
rate to 3-4 milliliters per minute (mL/min). The intakes for the canisters were set
approximately between 3-5 feet above the floor and the initial vacuums displayed on the laboratory-supplied vacuum gauges on the flow regulators were recorded. The canisters used during indoor air sampling activities were confirmed to have retained greater than 90% of their initial volume (>27” Hg) prior to sampling (Appendix C). The canisters were
left open over an approximately 24-hour period and closed once 24 hours had passed or a
vacuum of 5” Hg was achieved. The duplicate indoor air sample was collected concurrently with the primary sample and the ambient outdoor air sample was collected at an unwind location. Upon collection, the indoor air samples were shipped to Eurofins Air Toxics, LLC (Eurofins) in Folsom, California under chain-of-custody control for analysis. The canisters
were analyzed in the laboratory for VOCs according to EPA Method TO-15 (full list).
3.2 Sub-Slab Soil Gas Sample Collection Mid-Atlantic returned to the site on January 18, 2024, to collect five sub-slab soil gas
samples (MP-1, 19, 20, 21 and 22) and one duplicate sample (Duplicate, a duplicate of MP-
19) (Appendix C). These sample locations are summarized in Table 2 and shown in Figures 3 and 4. The procedures used to collect these samples are described in detail in the VIMS Plan.
As detailed in the VIMS Plan, a leak check was conducted at each of the sub-slab soil gas
monitoring points prior to sample collection. Helium concentrations of at least 100,000 parts per million (ppm) were maintained in the shroud during purging. Helium was not detected within the Tedlar bag at a concentration exceeding NCDEQ’s acceptable guideline of ten percent of the helium concentration under the plastic shroud at any of the sampling
locations. As such, unacceptable leaks were not detected prior to soil gas sample
collection. The results of Mid-Atlantic’s helium leak checks at each sample location are as follows:
Sample ID Helium Concentration Under Shroud Helium Concentration in Tedlar Bag
MP-1 11.2 % (112,000 ppm) 175 ppm
MP-19 10.8 % (108,000 ppm) 1,885 ppm
Duplicate (MP-19) 10.3% (103,000 ppm) 2,100 ppm
MP-20 12.6% (126,000 ppm) 125 ppm
MP-21 13.6 % (136,000 ppm) 0 ppm MP-22 10.6 % (106,000 ppm) 0 ppm
After performing the helium leak check at each sub-slab soil gas sample location, soil gas
samples were collected using laboratory-supplied 1-liter, batch-certified, stainless-steel
Summa canisters and flow regulators at a maximum flow rate of 200 mL/min. The
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canisters used during soil gas sampling activities were confirmed to have retained greater than 90% of their initial volume (>27” Hg) prior to sampling. The initial vacuums displayed
on the laboratory-supplied vacuum gauges on the flow controllers were recorded
(Appendix C) and the canisters were left open over an approximately five-minute period and closed once a vacuum of 5” Hg was achieved. The duplicate sample was collected sequentially immediately following collection of the primary sample after reconfirming the integrity of the sample train.

Upon collection, the soil gas samples were shipped to Eurofins under chain-of-custody control for analysis. The canisters were analyzed in the laboratory for VOCs according to EPA Method TO-15 (full list). Mercury contamination was not expected at the site; therefore, samples were not submitted for mercury vapor analysis.

4.0 SUMMARY OF LABORATORY ANALYTICAL RESULTS
The laboratory analytical reports and chain-of-custody records for the indoor/ambient air samples and sub-slab soil gas samples are provided in Appendix D and Appendix E with results summarized in Tables 3 and 4, respectively. The use of Building W is mixed commercial/residential with residential use on floors above ground level. Thus, sample
results were compared to the NCDEQ Division of Waste Management (DWM) January
2023 Residential Indoor Air Screening Levels (IASLs) and Soil Gas Screening Levels (SGSLs). However, Non-Residential IASLs and SGSLs are included in tables and risk assessment for reference.
4.1 Indoor Air Sampling Results Indoor air sample results are summarized in Table 3. During the sampling event conducted on January 12-13, 2024, four compounds were detected at concentrations exceeding
Residential IASLs. Of the four compounds, two are petroleum-related: benzene and
ethylbenzene; and two chlorinated or related to chlorinated compounds: trichloroethylene and 1,4 dioxane. Review of the data does not suggest a geographic pattern to the detections. In weeks leading up to the sampling events, a series of sealants, cleaners, caulks, adhesives, grouts, cements, paints, and other building materials containing VOCs
had been used, stored, or installed in the buildings which likely contributed to these
compounds detected in indoor air. Trichloroethylene, also known as trichloroethene or TCE, is a contaminant of particular concern due to the potential for adverse health effects in sensitive populations following
short-term exposure. TCE was detected above its method detection limit (MDL) in three
samples including the duplicate. The TCE concentrations ranged from 0.27J micrograms per cubic meter (ug/m3) to 1.2 ug/m3. The Residential IASL for TCE is 0.42 ug/m3.
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The outdoor ambient air sample Ambient showed detections of 14 compounds. Both petroleum and chlorinated solvent-related compounds were detected but no detected
concentration was above the Residential IASL. This suggests that VOCs were in the
outdoor/ambient air during the testing, but not at significant concentrations. 4.2 Soil Gas Sampling Results
Sub-slab soil gas sample results are summarized in Table 4. During the sampling event
conducted on January 18, 2024, one compound, chloroform, was detected at concentrations exceeding its Residential SGSL (4.1 ug/m3) in three samples including the duplicate. Chloroform is commonly present in municipal water supplies. TCE was detected in one sub-slab soil gas sample (MP-19) and its duplicate at an estimated maximum
concentration of 4.5J ug/m3, below its Residential SGSL of 14 ug/m3.
4.3 Risk Evaluation Methodology and Results
The cumulative risk is calculated by entering the maximum concentrations of all contaminants detected at each established exposure unit (EU) into the DEQ Risk Calculator. An EU is a defined area of a site represented by a specific set of land use(s), receptors, contaminant concentrations, and exposure pathways.0F
1 For this risk evaluation, four EUs
were identified in Building W and a portion of Building P (EU-1 through EU-4). Each EU is
isolated and conditioned separately from adjacent and surrounding spaces. The EUs are depicted in Figure 5 and comprised of the following spaces and samples: Exposure Unit ID Space/Use Description Indoor Air Samples Soil Gas Samples
EU-1 Northern Elevators Lobby
in Building P IA-1 MP-1
EU-2 Retail
Building W IA-19, IA-DUP, IA-20 MP-19, Duplicate, MP-20
EU-3 Stairwell
Building W IA-21 MP-21
EU-4 Leasing Office
Building W IA-22 MP-22
The DEQ Risk Calculator determines the cancer risk sum for all carcinogens and the cumulative hazard index for all non-carcinogens under Residential and Non-Residential
(industrial/commercial) exposure scenarios. The BRS allows a maximum cumulative cancer risk for all carcinogens of 1.0E-4 and a maximum cumulative hazard index (HI) of 1 for all non-carcinogens. The hazard index is the sum of the hazard quotient (HQ) calculated for each compound detected.

1 NCDEQ Technical Guidance for Risk-Based Environmental Remediation of Sites. March 2017. Page 40
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For each EU, risk is evaluated based on soil gas-to-indoor air analysis using the sub-slab data collected during the assessment. For this analysis, the concentrations or MDLs (for
compounds where the MDL was above the SGSL) for all compounds detected were used
to populate the Risk Calculator. Additionally, indoor air data was also used to determine risk. Often, and as is the case for this project, review of paired sub-slab and indoor air sample data shows evidence of
contributions from indoor sources of pollutants (i.e., indoor air concentrations higher than
sub-slab concentrations). Additionally, laboratory MDLs for several compounds are above the IASL (IASL too low for the lab to achieve). To accommodate these circumstances, the following approach/SOP was used when populating the Risk Calculator for the indoor air-based risk determination:

 For compounds where the indoor air concentration is less than the sub-slab concentration or sub-slab MDL, the indoor air concentration is used in the indoor air risk calculation;
 For compounds where the indoor air concentration is greater than the sub-slab concentration or sub-slab MDL (suggesting an indoor air source), the appropriate attenuation factor (99% attenuation for non-residential and 97% attenuation for residential) is applied to the sub-slab concentration or sub-slab MDL for use in the
indoor air risk calculation (e.g., for residential, take the sub-slab soil gas
concentration (or MDL), multiply by 0.03 and use this value for the indoor air concentration); and
 For compounds where the indoor air MDL is greater than the IASL, the appropriate
attenuation factor (99% attenuation for non-residential and 97% attenuation for
residential) is applied to the sub-slab concentration or sub-slab MDL for use in the indoor air risk calculation (assuming this value is also less than the indoor air MDL). Note: These attenuation factors are the same factors used in the NCDEQ Risk Calculator
for soil gas to indoor air evaluations.
Soil gas-based and indoor air-based Risk Calculator outputs for each EU are included in Appendix F. A summary of risk assessment parameters and the cumulative Residential exposure cancer risk sum and non-cancer hazard index for each EU is included in Table 5.
Further discussion regarding results from each EU is included below.
Exposure Unit 1, Elevator Lobby In EU-1, one sub-slab and one indoor air sample were collected. Chloroform was detected
in the sub slab soil gas at an estimated concentration of 5.9J ug/m3 exceeding the
Residential SGSL of 4.1 ug/m3. For indoor air, benzene (1.0 ug/m3) was the only compound detected at a concentration above its IASL (0.36 ug/m3). The Risk Calculator output is as follows:
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Exposure Unit Sub-Soil Soil Gas Residential Calculated Carcinogenic Risk Sum
Sub-Slab Soil Gas Residential Cumulative Non-Carcinogenic Hazard Index
EU-1
4.0E-05 5.8E-01
Indoor Air (Adjusted) Residential Calculated Carcinogenic Risk Sum
Indoor Air (Adjusted) Residential Cumulative Non-Carcinogenic Hazard Index
1.2E-05 2.3E-01

As indicated, the cancer risk sum and cumulative non-cancer hazard index for the indoor air sample in EU-1 did not exceed the target risk sum of 1.0E-4 nor the target cumulative non-cancer hazard index of 1 for the Residential exposure scenario. Exposure Unit 2, Retail
In EU-2, three sub-slab and three indoor air samples were collected (including the duplicates). For sub-slab soil gas, the highest detected concentration of chloroform (5.2 ug/m3) exceeded the Residential SGSL (4.1 ug/m3). No other compound detected in the soil gas exceeded the Residential SGSL. For indoor air, the highest detected concentrations of
1, 4 dioxane (0.65 ug/m3), benzene (0.59 ug/m3), ethylbenzene (4.5 ug/m3) and TCE (1.2 ug/m3) were the four compounds detected in concentrations exceeding the Residential IASLs (0.56, 0.36, 1.1 and 0.42 ug/m3, respectively). The Risk Calculator output is as follows:
Exposure Unit Sub-Soil Soil Gas Residential Calculated
Carcinogenic Risk Sum
Sub-Slab Soil Gas Residential Cumulative Non-
Carcinogenic Hazard Index
EU-2
2.3E-05 3.5E-01
Indoor Air (Adjusted) Residential Calculated
Carcinogenic Risk Sum
Indoor Air (Adjusted) Residential Cumulative Non-
Carcinogenic Hazard Index
1.1E-05 8.0E-01
As indicated, the cancer risk sum and cumulative non-cancer hazard index for the indoor air sample in EU-2 did not exceed the target risk sum of 1.0E-4 nor the target cumulative non-cancer hazard index of 1 for the Residential exposure scenario.

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Exposure Unit 3, Stairwell
In EU-3, one sub-slab and one indoor air sample were collected. For sub-slab soil gas there
were no compounds detected in concentrations exceeding the Residential SGSLs. For indoor air, benzene (0.61 ug/m3) and ethylbenzene (2.1 ug/m3) were the only compounds detected in concentrations exceeding the Residential IASLs (0.36 and 1.1 ug/m3, respectively). The Risk Calculator output is as follows:

Exposure Unit Sub-Soil Soil Gas Residential Calculated Carcinogenic Risk Sum
Sub-Slab Soil Gas Residential Cumulative Non-Carcinogenic Hazard Index
EU-3
2.3E-05 4.4E-01
Indoor Air (Adjusted) Residential Calculated
Carcinogenic Risk Sum
Indoor Air (Adjusted) Residential Cumulative Non-
Carcinogenic Hazard Index
6.9E-06 2.0E-01
As indicated, the cancer risk sum and cumulative non-cancer hazard index for the indoor air sample in EU-3 did not exceed the target risk sum of 1.0E-4 nor the target cumulative non-cancer hazard index of 1 for the Residential exposure scenario.
Exposure Unit 4, Leasing Area In EU-4, one sub-slab and one indoor air sample were collected. For sub-slab soil gas there were no compounds detected in concentrations exceeding the Residential SGSLs. For
indoor air, 1, 4 dioxane (0.77 ug/m3), benzene (0.57 ug/m3) and ethylbenzene (2.6 ug/m3) were the only compounds detected in concentrations exceeding the Residential IASLs (0.56, 0.36 and 1.1 ug/m3, respectively). The Risk Calculator output is as follows:
Exposure Unit Sub-Soil Soil Gas Residential Calculated Carcinogenic Risk Sum
Sub-Slab Soil Gas Residential Cumulative Non-Carcinogenic Hazard Index
EU-4
2.2E-05 2.8E-01
Indoor Air (Adjusted) Residential Calculated Carcinogenic Risk Sum
Indoor Air (Adjusted) Residential Cumulative Non-Carcinogenic Hazard Index
8.1E-06 1.6E-01

As indicated, the cancer risk sum and cumulative non-cancer hazard index for the indoor air sample in EU-4 did not exceed the target risk sum of 1.0E-4 nor the target cumulative non-cancer hazard index of 1 for the Residential exposure scenario.
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5.0 QUALITY ASSURANCE
One duplicate indoor air sample and one duplicate sub-slab soil gas sample were
collected during each sampling event and analyzed for VOCs by EPA Method TO-15 (full list). Duplicate samples were collected using laboratory-provided Summa canisters and submitted to the laboratory with a vacuum of at least 5” Hg remaining in the canisters. All samples were submitted to the laboratory under chain-of-custody control for analysis. The
laboratory analytical reports were reported to level II QA/QC including the reporting of J-
flags (where the laboratory reported concentration is an estimated value greater than the MDL but lower than the reporting limit). Efforts were made to ensure that soil gas samples were analyzed with the lowest feasible MDLs under EPA Method TO-15. In general, duplicate samples did not appear to exhibit high variability in concentrations when
compared to the primary samples. There were no limitations on which constituents were
reported by the laboratory (except for acrolein). 6.0 SUMMARY AND CONCLUSIONS

The overall objective of this assessment was to provide indoor air and soil gas data from Buildings W and P (partial) of the NHX redevelopment to 1) evaluate if vapor intrusion is occurring which could pose unacceptable risk to building occupants, 2) support a decision regarding occupancy of the buildings, and 3) to determine if the VIMS for Building W could
be operated in passive mode without active use of depressurization fans. Mid-Atlantic
offers the following summary of assessment activities and results:
 A total of five paired indoor air/sub-slab soil gas samples, one ambient outdoor air
sample, one duplicate indoor air sample and one duplicate sub-slab soil gas
sample were collected from Buildings W and P;
 Four compounds were detected in various indoor air samples at concentrations exceeding their respective Residential IASLs;
 Sub-slab soil gas samples exhibited nominal contaminant levels and had no detected compounds above SGSLs except for chloroform, which was detected in one sample at a concentration exceeding its SGSL. Chloroform is a compound commonly found in municipal water supplies;
 TCE was detected in one of the five sub-slab soil gas sample locations (also detected in the duplicate collected at this same location) at a maximum estimated concentration of 4.5J ug/m3, which is below the Residential SGSL of 14 ug/m3. This detection was in EU-2 (Retail space);
 TCE was detected in indoor air at EU-2 (Retail space, maximum concentration 1.2 ug/m3) above its IASL (0.42 ug/m3). TCE was not detected in the indoor air samples collected from any of the other three EUs;
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 Risk evaluations were performed on four EUs Buildings W and P (EU-1 through
EU-4), each isolated and conditioned separately from adjacent and surrounding
spaces;
 Risk calculations using indoor air and/or soil gas data from each EU identified no unacceptable exposure risk under Residential use scenarios in all four EUs; and
 Several materials containing VOCs had been used, stored, or installed in the building in the days and weeks leading up to the sampling events and likely contributed to the concentrations detected in indoor air.
Based on the results of this assessment, Mid-Atlantic concludes the following:

 Sub-slab soil gas results indicate low risk of unacceptable vapor intrusion;
 Occupancy of Buildings W and P for residential use does not pose an
unacceptable exposure risk; and
 Considering the low sub-slab soil gas contaminant levels detected, the VIMS for Building W can be operated passively without active use of depressurization fans.

FIGURES
´
TOPOGRAPHIC SITE MAPNORTH HILLS EXPANSION
LASSITER MILL ROADRALEIGH, NORTH CAROLINA
DRAWN BY:
DATE:
ENG. CHECK:
JOB NO:
APPROVAL:
DRAFTCHECK:GIS NO:
DWG NO:
REFERENCES:
SCALE:
JUNE 2021
000R3746.02
3G-R3746.02-1
1
1. RALEIGH WEST, NC DIGITAL RASTER GRAPHICS, USGS. SCANNED FROM 1:24,000-SCALE WAKE, NC TOPOGRAPHIC MAPS, PUBLISHED 2019, USGS.2. INSET MAP DIGITAL DATA FROM 2002 NATIONAL TRANSPORTATION ATLAS, BUREAU OF TRANSPORTATION STATISTICS, WASHINGTON, D.C.3. PROPERTY BOUNDARY DATA FROM WAKE COUNTY GIS.
CONTOUR INTERVAL = 10 FEET
0 600 1,200Feet
SITE
1:12,000
KRC
§¨¦I440
§¨¦U64
WAKE
AREA SHOWNWITHIN WAKE COUNTY
DHN
DHNDHN
JIE
UPUPRETAIL
101
STAIR #1
S101
1/4"A7.021F.C.C.
A102
101AA101A100S101A10246'-4 3/8"10101DLEASINGA100
OFFICE ONE
A103
OFFICE TWOA104
RESIDENT ENTRY
A101 DRY CLEAN LOCKERSA113AME
A11
A101BA103A104A108A106MECH.
A106 A/VA10A107
A113BPARKING
113
TRAINING100
BREAK
112
LAUNDRY /
STORAGE101
DISPATCH
110
FSAEELEVATORSANDLOBBYWOMEN'SLOCKERROOM
MEN'SLOCKERROOM
ELECTRICAL DOCK OFFICE
JIE
UPUPRETAIL
101
STAIR #1
S101
1/4"A7.021F.C.C.
A102
101AA101A100S101A10246'-4 3/8"10101DLEASING
A100
OFFICE ONE
A103
OFFICE TWO
A104
RESIDENT ENTRY
A101 DRY CLEAN LOCKERSA113AME
A11
A101BA103A104A108A106MECH.
A106
A/V
A10A107
A113BJIE
UPUPRETAIL
101
STAIR #1
S101
1/4"A7.021F.C.C.
A102
101AA101A100S101A10246'-4 3/8"10101DLEASINGA100
OFFICE ONE
A103
OFFICE TWOA104
RESIDENT ENTRY
A101 DRY CLEAN LOCKERSA113AME
A11
A101BA103A104A108A106MECH.
A106 A/VA10A107
A113BPARKING
113
TRAINING100
BREAK
112
LAUNDRY /
STORAGE101
DISPATCH
110
FSAEELEVATORSANDLOBBYWOMEN'SLOCKERROOM
MEN'SLOCKERROOM
ELECTRICAL DOCK OFFICE
JIE

TABLES
Monitoring Point Vacuum Reading (pascals, pa)
MP-19 -92.0
MP-20 -49.2
MP-22 -47.0
TABLE 1
SUB-SLAB DEPRESSURIZATION INFLUENCE RESULTS
BUILDING W
NORTH HILLS EXPANSION
RALEIGH, NORTH CAROLINA
MID-ATLANTIC JOB NO. R3746.02
DescriptionIndoor Air Samples Sub-Slab Monitoring PointsNorth Elevators Lobby, Building P IA-1MP-1Steakhouse, Building WIA-19, IA-20MP-19, MP-20Stairwell, Building WIA-21MP-21Leasing , Building WIA-22MP-22TABLE 2MONITORING POINT AND INDOOR AIR SAMPLE SUMMARYBUILDING W AND P (PARTIAL)NORTH HILLS EXPANSIONRALEIGH, NORTH CAROLINAMID-ATLANTIC JOB NO. R3746.02
EXPOSURE UNIT (EU)EU 1 EU 3 EU 4
Sampling Date 1/13/2024 1/13/2024 1/13/2024 1/13/2024 1/13/2024 1/13/2024 1/13/2024
1,1,1-Trichloroethane <0.15 <0.18 <0.17 <0.16 <0.17 <0.18 <0.25 1,000 4,4001,1,2,2-Tetrachloroethane <0.26 <0.30 <0.29 <0.28 <0.28 <0.30 <0.42 0.048 0.211,1,2-Trichloroethane <0.25 <0.29 <0.28 <0.26 <0.27 <0.28 <0.40 0.042 0.181,1-Dichloroethane <0.12 <0.15 <0.14 <0.13 <0.14 <0.14 <0.20 1.8 7.71,1-Dichloroethylene <0.14 <0.16 <0.16 <0.15 <0.15 <0.16 <0.23 42 1801,2,4-Trichlorobenzene <2.9 <3.4 <3.2 <3.1 <3.2 <3.3 <4.7 0.42 1.81,2,4-Trimethylbenzene 1.4 1.1 1.2 0.95 1.3 1.5 <0.31 13 531,2-Dibromoethane (EDB)<0.27 <0.32 <0.30 <0.29 <0.30 <0.31 <0.44 0.0047 0.021,2-Dichlorobenzene <0.17 <0.20 <0.19 <0.18 <0.19 <0.20 <0.28 42 1801,2-Dichloroethane <0.14 <0.17 <0.16 <0.15 <0.15 <0.16 <0.23 0.11 0.471,2-Dichloropropane <0.21 <0.25 <0.24 <0.23 <0.23 <0.24 <0.34 0.76 3.31,3,5-Trimethylbenzene 0.42 J 0.34 J 0.30 J 0.22 J 0.36 J 0.42 J <0.28 13 531,3-Butadiene <0.14 <0.16 <0.15 <0.14 <0.15 <0.15 <0.22 0.094 0.411,3-Dichlorobenzene <0.19 <0.22 <0.21 <0.20 <0.21 <0.22 <0.31 NE NE1,4-Dichlorobenzene <0.14 <0.17 <0.16 <0.15 <0.15 <0.16 <0.23 0.26 1.11,4-Dioxane <0.15 0.65 0.54 J 0.42 J <0.17 0.77 <0.25 0.56 2.52-Butanone (MEK)1.2 J 34 29 24 35 21 5.0 1,000 4,4002-Hexanone (MBK)<0.67 <0.78 <0.74 <0.71 <0.73 <0.76 <1.1 6.3 26Isopropanol2.3 J 27 28 28 40 26 1.1 J 42 1804-Ethyltoluene 1.4 0.82 J 0.88 <0.21 0.95 0.36 J 0.35 J NE NE4-Methyl-2-pentanone (MIBK)<0.12 0.79 0.74 0.75 1.6 0.68 <0.19 630 2,600Acetone5.8 J 170 E 130 76 130 59 13 NE NEBenzyl Chloride (alpha-Chlorotoluene)<0.17 <0.20 <0.19 <0.18 <0.19 <0.20 <0.28 0.057 0.25Benzene1.0 0.59 0.55 0.56 0.61 0.57 0.35 J 0.36 1.6Bromodichloromethane<0.21 <0.24 <0.23 <0.22 <0.22 <0.24 <0.33 0.076 0.33Bromoform<0.27 <0.32 <0.31 <0.29 <0.30 <0.31 <0.44 2.6 11Bromomethane<1.6 <1.9 <1.8 <1.7 <1.8 <1.8 <2.6 1.0 4.4Carbon Disulfide <2.1 <2.5 <2.4 <2.3 <2.3 <2.4 <3.4 150 610Carbon Tetrachloride 0.21 J 0.23 J 0.26 J <0.20 0.25 J 0.25 J <0.31 0.47 2.0Chlorobenzene<0.19 <0.22 <0.21 <0.20 <0.20 <0.21 <0.30 10 44Chloroethane<0.52 <0.62 <0.59 <0.56 <0.57 <0.60 <0.85 830 3,500Chloroform<0.15 <0.18 <0.17 <0.16 <0.17 <0.18 <0.25 0.12 0.53Chloromethane0.84 J 0.81 J 0.63 J 0.64 J <0.51 0.65 J 0.76 J 19 79cis-1,2-Dichloroethylene <0.30 <0.35 <0.33 <0.32 <0.32 <0.34 <0.48 8.3 35cis-1,3-Dichloropropene <0.12 <0.14 <0.13 <0.12 <0.13 <0.13 <0.19 NE NECyclohexane<0.49 76 65 25 2.4 J 1.6 J <0.79 1,300 5,300Dibromochloromethane<0.20 <0.23 <0.22 <0.21 <0.22 <0.23 <0.32 NE NEEthanol11 44 41 47 110 52 2.2 J NE NEEthyl Acetate <0.73 5.1 4.5 3.8 5.5 1.6 J <1.2 15 61Ethylbenzene0.56 J 4.5 3.7 2.7 2.1 2.6 0.25 J 1.1 4.9Trichlorofluoromethane (Freon 11)0.84 0.79 J 0.67 J 0.77 J 0.87 J 0.71 J 0.79 J NE NE1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)0.29 J <0.25 <0.24 <0.23 <0.23 0.33 J <0.34 1,000 4,4001,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)<0.23 <0.27 <0.26 <0.25 <0.25 <0.27 <0.38 NE NEDichlorodifluoromethane (Freon 12)1.6 J <0.58 1.3 J 1.4 J 1.5 J 1.3 J 1.4 J 21 88Heptane<0.46 4.1 3.6 1.7 J 2.2 J 0.87 J <0.74 83 350Hexachlorobutadiene<1.8 <2.1 <2.0 <1.9 <1.9 <2.0 <2.9 0.13 0.56Hexane<0.62 2.7 J 2.4 J 0.99 J <0.67 <0.70 <1.0 150 610m&p-Xylene 2.1 21 18 11 8.2 10 0.72 J NE NEMethyl tert-Butyl Ether (MTBE)<0.16 <0.18 <0.18 <0.17 <0.17 <0.18 <0.26 11 47Methylene Chloride 0.29 J 2.6 2.3 1.4 2.9 3.8 <0.36 100 530
Naphthalene <0.46 <0.53 <0.51 <0.49 <0.50 <0.52 <0.74 0.083 0.36o-Xylene 0.82 7.2 6.3 4.2 3.7 3.7 0.32 J 21 88Propene<0.26 <0.31 <0.29 <0.28 <0.29 <0.30 <0.43 630 2,600Styrene<0.17 3.0 2.9 3.0 7.5 3.4 <0.27 210 880Tetrachloroethylene<0.24 <0.28 <0.27 <0.26 <0.26 <0.27 <0.39 8.3 35Tetrahydrofuran<2.0 19 17 15 13 14 <3.3 420 1,800Toluene2.2 100 82 38 16 13 0.95 1,000 4,400trans-1,2-Dichloroethylene <0.21 <0.25 <0.24 <0.23 <0.23 <0.24 1.5 8.3 35trans-1,3-Dichloropropene <0.19 <0.23 <0.22 <0.21 <0.21 <0.22 <0.32 NE NETrichloroethylene<0.091 1.2 1.0 0.27 J <0.099 <0.10 <0.15 0.42 1.8Vinyl Acetate <0.57 <0.67 <0.64 <0.61 <0.62 <0.65 <0.92 42 180Vinyl Chloride <0.088 <0.10 <0.098 <0.094 <0.095 <0.10 <0.14 0.17 2.8Notes:
Concentration units: µg/m3
J = Estimated ConcentrationNE = Not Established† = Sample (AMBIENT) was collected as an outdoor ambient air sample and was not considered in risk calculations
Italicized = Analyte was not detected, however the MDL exceeds Residential Indoor Air Screening LevelsBolded concentrations exceed the Residential Indoor Air Screening Level<0.34 = Not detected above the lab method detection limitNCDEQ DWM = North Carolina Department of Environmental Quality Division of Waste Management
NCDEQ DWM Non-Residential Indoor AirScreening Levels
July 2023 (ug/m3)
Sample ID IA-1 IA-20 IA-21 IA-22IA-19
TABLE 3
CHEMICAL CONSTITUENTS ANALYZED IN INDOOR AIR
PRE-OCCUPANCY TESTINGNORTH HILLS EXPANSION - BUILDING WRALEIGH, NORTH CAROLINAMID-ATLANTIC JOB NO. R3746.02
IA-DUP(IA-19)
EU 2
AMBIENT†NCDEQ DWM Residential Indoor AirScreening Levels
July 2023 (ug/m3)
Exposure Unit ID EU 1 EU 3 EU 4
Sampling Date 1/18/2024 1/18/2024 1/18/2024 1/18/2024 1/18/2024 1/18/2024
1,1,1-Trichloroethane <2.2 <1.4 <1.4 <1.4 <1.4 <1.4 35,000 440,000
1,1,2,2-Tetrachloroethane <4.0 <2.4 <2.4 <2.4 <2.4 <2.5 1.6 21
1,1,2-Trichloroethane <3.0 <1.9 <1.9 <1.8 <1.8 <1.9 1.4 181,1-Dichloroethane <1.5 <0.92 <0.92 <0.90 <0.90 <0.92 58 7701,1-Dichloroethylene <3.4 <2.1 <2.1 <2.1 <2.1 <2.1 1,400 18,0001,2,4-Trichlorobenzene <9.2 <5.7 <5.7 <5.6 <5.6 <5.7 14 1801,2,4-Trimethylbenzene <2.2 <1.4 <1.4 <1.4 <1.4 <1.4 420 5,300
1,2-Dibromoethane (EDB)<4.2 <2.6 <2.6 <2.6 <2.6 <2.6 0.16 21,2-Dichlorobenzene <2.7 <1.7 <1.7 <1.6 <1.6 <1.7 1,400 18,0001,2-Dichloroethane <2.3 <1.4 <1.4 <1.4 <1.4 <1.4 3.6 471,2-Dichloropropane <2.1 <1.3 <1.3 <1.3 <1.3 <1.3 25 3301,3,5-Trimethylbenzene <2.2 <1.4 <1.4 <1.3 <1.3 <1.4 420 5,3001,3-Butadiene <2.2 <1.3 <1.3 <1.3 <1.3 <1.4 3.1 411,3-Dichlorobenzene <2.4 <1.4 <1.4 <1.4 <1.4 <1.5 NE NE1,4-Dichlorobenzene <3.4 <2.1 <2.1 <2.1 <2.1 <2.1 8.5 1101,4-Dioxane <5.6 <3.4 <3.4 <3.4 16 <3.5 19 2502-Butanone (MEK)5.7 J <2.0 <2.0 <2.0 3.1 J <2.1 35,000 440,0002-Hexanone (MBK)<7.7 <4.8 <4.8 <4.7 <4.7 <4.8 210 2,600Isopropanol50 <3.5 <3.5 <3.4 11 <3.5 1,400 18,0004-Ethyltoluene <1.8 <1.1 <1.1 <1.1 <1.1 <1.1 NE NE4-Methyl-2-pentanone (MIBK)<2.6 <1.6 <1.6 <1.6 <1.6 <1.6 21,000 260,000Acetone 1600 E 12 J 11 J 8.3 J 93 8.2 J NE NEBenzyl Chloride <2.8 <1.7 <1.7 <1.7 <1.7 <1.7 1.9 25Benzene 2.2 J <0.78 <0.78 <0.77 <0.77 <0.79 12 160
Bromodichloromethane <3.5 <2.2 <2.2 <2.1 <2.1 <2.2 2.5 33Bromoform<6.8 <4.2 <4.2 <4.2 <4.2 <4.3 85 1,100Bromomethane<12 <7.1 <7.1 <7.0 <7.0 <7.2 35 440Carbon Disulfide <4.0 <2.4 6.3 J <2.4 22 <2.5 4,900 61,000Carbon Tetrachloride <3.4 <2.1 <2.1 <2.0 <2.0 <2.1 16 200Chlorobenzene<1.6 <1.0 <1.0 <0.99 <0.99 <1.0 350 4,400Chloroethane<6.1 <3.8 <3.8 <3.7 <3.7 <3.8 28,000 350,000Chloroform5.9 J 4.9 J 5.2 <1.1 2.2 J <1.2 4.1 53Chloromethane<5.9 <3.6 <3.6 <3.6 <3.6 <3.7 630 7,900cis-1,2-Dichloroethylene <1.4 <0.89 <0.89 <0.88 <0.88 <0.90 NE 3,500cis-1,3-Dichloropropene <1.8 <1.1 <1.1 <1.1 <1.1 <1.2 NE NECyclohexane3.1 J <1.3 <1.3 <1.3 2.6 J <1.3 42,000 530,000Dibromochloromethane<4.2 <2.6 <2.6 <2.6 <2.6 <2.6 NE NEEthanol250 <9.7 <9.7 <9.5 <9.5 <9.8 NE NEEthyl Acetate <10 <6.3 <6.3 <6.2 <6.2 <6.3 490 6,100Ethylbenzene<1.7 <1.1 <1.1 <1.0 <1.0 <1.1 37 490Trichlorofluoromethane (Freon 11)4.0 J <1.9 <1.9 13 7.6 <1.9 NE NE1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)<2.8 <1.7 <1.7 <1.7 <1.7 <1.7 35,000 440,0001,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)<3.3 <2.0 <2.0 <2.0 <2.0 <2.0 NE NEDichlorodifluoromethane (Freon 12)<4.0 <2.4 <2.4 <2.4 <2.4 <2.5 700 8,800Heptane8.8 <1.4 <1.4 <1.4 <1.4 <1.4 2,800 35,000Hexachlorobutadiene<20 <12 <12 <12 <12 <13 4.3 56Hexane 5.3 J <1.1 <1.1 <1.1 <1.1 3.5 J 4,900 61,000m&p-Xylene 2.4 J 0.78 J <0.64 <0.64 1.6 J <0.65 700 8,800Methyl tert-Butyl Ether (MTBE)<4.4 <2.7 <2.7 <2.7 <2.7 <2.8 360 4,700Methylene Chloride <4.9 <3.0 <3.0 <3.0 <3.0 <3.0 3,400 53,000Naphthalene1.9 J <0.86 <0.86 <0.85 <0.85 <0.87 2.8 36o-Xylene <1.7 <1.1 <1.1 <1.1 <1.1 <1.1 700 8,800Propene<3.4 <2.1 <2.1 <2.1 <2.1 <2.1 21,000 260,000Styrene<1.3 <0.78 <0.78 <0.77 <0.77 <0.79 7,000 88,000Tetrachloroethylene26 3.6 J 3.5 J 7.4 210 <1.8 280 3,500Tetrahydrofuran<3.2 <2.0 <2.0 <1.9 <1.9 <2.0 14,000 180,000Toluene 4.9 J 3.8 J 2.4 J 4.3 J 3.6 J 1.8 J 35,000 440,000trans-1,2-Dichloroethylene <3.0 <1.9 <1.9 <1.8 <1.8 <1.9 280 3,500trans-1,3-Dichloropropene <1.2 <0.72 <0.72 <0.71 <0.71 <0.73 NE NETrichloroethylene<2.7 4.5 J 3.3 J <1.6 <1.6 <1.7 14 180Vinyl Acetate <10 <6.3 <6.3 <6.2 <6.2 <6.4 1,400 18,000Vinyl Chloride <3.6 <2.2 <2.2 <2.2 <2.2 <2.2 5.6 280Notes:
Concentration units: micrograms per cubic meter (µg/m3)NCDEQ DWM = North Carolina Department of Environmental Quality Division of Waste ManagementJ = Estimated ConcentrationE = Exceeds instrument calibration rangeNE = Not Established
Italicized = Analyte was not detected, however the MDL in at least one sample exceeds Residential Indoor Air Screening LevelsBolded concentrations exceed the Residential Soil Gas Level<0.34 = Not detected above the lab method detection limit
NCDEQ DWM = North Carolina Department of Environmental Quality Division of Waste Management
MP-1
EU 2
TABLE 4CHEMICAL CONSTITUENTS ANALYZED IN SOIL GASPRE-OCCUPANCY TESTINGNORTH HILLS EXPANSION - BUILDING WRALEIGH, NORTH CAROLINAMID-ATLANTIC JOB NO. R3746.02
NCDEQ DWM Residential Soil GasScreening Levels
July 2023 (µg/m3)
NCDEQ DWMNon-Residential Soil GasScreening Levels
July 2023 (µg/m3)
Sample ID MP-19 DUPLICATE(MP-19)MP-20 MP-21 MP-22
Cancer HI Cancer HI Cancer HI Cancer HI4.0E-05 5.8E-01 2.3E-05 3.5E-01 2.3E-05 4.4E-01 2.2E-05 2.8E-011.2E-05 2.3E-01 1.1E-05 8.0E-01 6.9E-06 2.0E-01 8.1E-06 1.6E-01To evaluate risk in each EU: 1)2)3)For compounds where the indoor air MDL is greater than the IASL, 3% (the risk calculator’s residential attenuation factor) of the sub-slab concentration or sub-slab MDL is used in the indoor air risk calculation (assuming this value is also less than the indoor air MDL).For compounds where the indoor air concentration is greater than the sub-slab concentration or MDL (suggesting an indoor air source), 3% (the risk calculator’s residential attenuation factor) of the sub-slab concentration or sub-slab MDL is used in the indoor air risk calculation.For compounds where the indoor air concentration is less than the sub-slab concentration or MDL, the indoor air concentration is used in the indoor air risk calculation.Indoor Air Samples:IA-1IA-19, IA-DUP (IA-19), IA-20IA-21IA-22Risk Criterion:Residential(Indoor Air)Use ScenariosResidential(Sub-Slab)TABLE 5PRE-OCCUPANCY INDOOR AIR/SOIL GAS TESTING RISK ASSESSMENT SUMMARYNORTH HILLS EXPANSION - BUILDING WRALEIGH, NORTH CAROLINAMID-ATLANTIC JOB NO. R3746.02Sub-Slab samples:MP-1MP-19, Duplicate (MP-19), MP-20MP-21MP-22Use Description:Elevator LobbyRetail SpaceStairwellLeasing AreaExposure Unit:EU-1EU-2EU-3EU-4

APPENDIX A
VIMS INSPECTION LOGS
VIMS Inspection Form
Project Info
Field Tech : Colton Gotshall Date : 06/20/2022
Client : Aptus Project : JC Penney North Hills Redevelopment
Zone : Barrier Only Utility Bank? No
Checklist
DESCRIPTION STATUS
Vapor pits N/A
Perforated horizontal pipes N/A
Solid horizontal pipes N/A
Washed gravel layer N/A
Membrane barrier Yes
Monitoring points N/A
Smoke test N/A
Vertical risers N/A
Seals in concrete slab penetrations/joints N/A
Fan installation and operation N/A
Stairwell N/A
Elevator pit Yes

Page 1 of 2
Photos/Notes

Notes : North Elevators pit concrete was poured and a vapor barrier sealed over the top of it. The associated lobby, which includes MP-1, has not been constructed at this point.
Sign-Off
Signature
<-- End of Form -->

Page 2 of 2
VIMS Inspection Form
Project Info
Field Tech : Colton Gotshall Date : 07/08/2022
Client : Aptus Project : JC Penney North Hills Redevelopment
Zone : Barrier Only Utility Bank? No
Checklist
DESCRIPTION STATUS
Vapor pits N/A
Perforated horizontal pipes N/A
Solid horizontal pipes N/A
Washed gravel layer N/A
Membrane barrier Yes
Monitoring points Yes
Smoke test N/A
Vertical risers N/A
Seals in concrete slab penetrations/joints N/A
Fan installation and operation N/A
Stairwell N/A
Elevator pit N/A

Page 1 of 2
Photos/Notes
Notes : Membrane vapor barrier installed over Riser room and North Elevators Lobby areas. MP-1 installed. No smoke test conducted, as Brassfield told Buckeye
Elm no inspections were necessary and Buckeye Elm left prior to Mid-Atlantics arrival.
Sign-Off
Signature
<-- End of Form -->
Page 2 of 2
VIMS Inspection Form
Project Info
Field Tech : Colton Gotshall Date : 11/10/2022
Client : Aptus Project : JC Penney North Hills Redevelopment
Zone : Depressurization Utility Bank? No
Checklist
DESCRIPTION STATUS
Vapor pits N/A
Perforated horizontal pipes N/A
Solid horizontal pipes N/A
Washed gravel layer Yes
Membrane barrier N/A
Monitoring points N/A
Smoke test N/A
Vertical risers N/A
Seals in concrete slab penetrations/joints N/A
Fan installation and operation N/A
Stairwell N/A
Elevator pit N/A

Page 1 of 3
Photos/Notes

Page 2 of 3
Notes : Washed gravel layer was installed in Building W upon arrival. Gravel was mixed with soil in an area surrounding recently installed utility lines in the southeastern portion of
Building W. After speaking with Sam, with Brassfield and Gorrie, it was decided to remove the gravel/soil mixture and replace it with the correct washed gravel to a 5 inch depth.
Brassfield stated that their plans call for 5 inches of stone rather than the 6 inches Mid-Atlantic recommended. Gravel was also lower than 6 inches throughout the site and
was corrected to a 5 inch thickness, rather than Mid-Atlantics 6 inch recommendation, during the site visit. The entire lobby area in the southeastern portion of Building W
was filled with washed gravel to a 5 inch thickness prior to leaving site.
Sign-Off
Signature
<-- End of Form -->
Page 3 of 3
VIMS Inspection Form
Project Info
Field Tech : Colton Gotshall Date : 11/14/2022
Client : Aptus Project : JC Penney North Hills Redevelopment
Zone : Depressurization Utility Bank? No
Checklist
DESCRIPTION STATUS
Vapor pits Yes
Perforated horizontal pipes N/A
Solid horizontal pipes Yes
Washed gravel layer Yes
Membrane barrier N/A
Monitoring points N/A
Smoke test N/A
Vertical risers Yes
Seals in concrete slab penetrations/joints N/A
Fan installation and operation N/A
Stairwell N/A
Elevator pit N/A

Page 1 of 3
Photos/Notes

Page 2 of 3
Notes : Solid horizontal pipe and vapor pit W-2 was installed in the lobby area of Building W upon arrival. Electrical conduit was lowered in order to lay the pipe in the correct
position/location. Buckeye Elm was installing the vapor barrier in portions of Building W, including the ribbon slab area around the retail space, during the site visit. Buckeye Elm
did not have a metal lid for the vapor pit and was calling around to find one prior to Mid-Atlantics departure. Job was delayed today due to not having the metal lid for the vapor
pit and the horizontal pipes were installed with weep holes. No holes were to be drilled into the pipes. Buckeye Elm left to buy pipe to replace all pipe installed today. Pipe and
pit location will need to be inspected prior to backfilling the washed gravel overtop.
Sign-Off
Signature
<-- End of Form -->

Page 3 of 3
VIMS Inspection Form
Project Info
Field Tech : Gary Fischer Date : 11/15/2022
Client : Aptus Project : JC Penney North Hills Redevelopment
Zone : Depressurization Utility Bank? No
Checklist
DESCRIPTION STATUS
Vapor pits Yes
Perforated horizontal pipes N/A
Solid horizontal pipes Yes
Washed gravel layer Yes
Membrane barrier Yes
Monitoring points Yes
Smoke test Yes
Vertical risers N/A
Seals in concrete slab penetrations/joints N/A
Fan installation and operation N/A
Stairwell N/A
Elevator pit N/A

Page 1 of 7
Photos/Notes

Page 2 of 7

Page 3 of 7

Page 4 of 7

Page 5 of 7
Notes : I got to the site at 0830. Buckeye Elm wasnt on site. Sam (GC) with Brassfield asked why they werent on site yet. I called Colton and he got up with Chris (Buckeye
Foreman) and he told him they had been at the Plumbing store picking up supplies since 0630. They ended up showing up at 0900. They had a 6 man crew (Chris, Deese,
Drew, Big, Bink & Joey. They took out the 6 inch​ pipe they had installed in the trench yesterday. They had drilled large weep holes in the pipe to prevent water buildup in it.
This would impact the vacuum significantly so it had to be replaced. They installed the new 6 inch​ PVC pipe. They checked the angle of the pipe so that the angle wasnt
toward the elbows. Sam wanted there mechanical inspector to inspect the pipe before Buckeye started covering it up with stone. We waited 45mins. but the guy never
showed up. Brassfield ended up calling the guy and sent him pictures of the pipe. After seeing the pictures the guy gave the ok to cover up the pipe. A Brassfield guy came
and shot elevations on top of the stone. A good portion of the stone in the area had to be removed to get it to the correct elevation. There was a small area West of the Vapor
pit that the stone was only 3 inches​ thick after the correct elevation was achieved. The concrete that will be poured over the stone will be 5 inches​ thick. We put a little
additional stone in the area where it was only 3 inches​ thick. The concrete will probably be less than 5 inches​ thick in that area now. Buckeye placed the 20 ml thick vapor
barrier over the stone and then sprayed all of the seams and at all of the stub ups with a black tarry material. Once this stuff cured it sealed very well. Chris went around and
brushed the stuff around all of the stub ups. After all of the sealing was finished they performed a smoke test at 3 locations. At the 1st location there was 3 areas where they
had to go back and do additional sealing. One was at a seam and the other 2 were at stub ups. The 2nd smoke location there wasnt any leaks. At the 3rd location there was
a leak at a stub up. They ran the smoke for more than 5 minutes at each location. They also installed a monitoring point (MP-22) over by the escalator. Chris got correct
elevation by pulling a chalk line to the near concrete slab. I took numerous pictures and filled out the VIMS inspection form on XForms. I left the site at 1330.
Sign-Off
Signature
Page 6 of 7
VIMS Inspection Form
Project Info
Field Tech : Colton Gotshall
Client : Aptus
Zone : Barrier Only
Date : 02/14/2023
Project : JC Penney North Hills Redevelopment
Utility Bank? No
Checklist
DESCRIPTION STATUS
Vapor pits N/A
Perforated horizontal pipes N/A
Solid horizontal pipes N/A
Washed gravel layer N/A
Membrane barrier Yes
Monitoring points N/A
Smoke test
Vertical risers N/A
Seals in concrete slab penetrations/joints N/A
Fan installation and operation N/A
Stairwell
Elevator pit
Page 1 of 2
Yes
N/A
Yes
Photos/Notes
Notes : Buckeye-Elm installed the membrane vapor barrier on the interior of the Retail Stairwell in Building W. Due to the concrete footer being 3+ feet thick, MP-21
was not installed during this inspection. The vapor barrier passed the smoke test and will be concreted later this morning.Sign-Off
Signature
<-- End of Form -->
Page 2 of 2
VIMS Inspection Form
Project Info
Field Tech : Colton Gotshall Date : 06/05/2023
Client : Aptus Project : JC Penney North Hills Redevelopment
Zone : Depressurization Utility Bank? Yes
Checklist
DESCRIPTION STATUS
Vapor pits Yes
Perforated horizontal pipes N/A
Solid horizontal pipes N/A
Washed gravel layer Yes
Membrane barrier N/A
Monitoring points N/A
Smoke test N/A
Vertical risers N/A
Seals in concrete slab penetrations/joints N/A
Fan installation and operation N/A
Stairwell N/A
Elevator pit N/A

Page 1 of 2
Photos/Notes

Notes : Inspection of the stone in Building W was observed to be LESS THAN 6 inches and in some areas less than 1 inch. Fine particles and sand were noted throughout a
majority of Building W. I notified multiple Brassfield & Gorrie supervisors (Scott Miller and Grant) that the stone did not pass inspection. They assured me that it will be ready by
tomorrow.
Sign-Off
Signature
<-- End of Form -->

Page 2 of 2
VIMS Inspection Form
Project Info
Field Tech : Colton Gotshall Date : 06/06/2023
Client : Aptus Project : JC Penney North Hills Redevelopment
Zone : Depressurization Utility Bank? Yes
Checklist
DESCRIPTION STATUS
Vapor pits N/A
Perforated horizontal pipes N/A
Solid horizontal pipes N/A
Washed gravel layer Yes
Membrane barrier N/A
Monitoring points N/A
Smoke test N/A
Vertical risers N/A
Seals in concrete slab penetrations/joints N/A
Fan installation and operation N/A
Stairwell N/A
Elevator pit N/A

Page 1 of 3
Photos/Notes

Only section that passes
Notes : I was told my Mr. Matt Hyman (Brassfield and Gorrie) that the stone was completed and ready for inspection in Building W. Upon arrival, I observed plumbers still
installing piping in Building W and large amounts of sand and dirt mixed in with gravel. Many areas were still not 6 inch thickness of washed gravel. I told Brassfield the stone
failed inspection again.
Sign-Off
Signature
<-- End of Form -->

Page 2 of 3
VIMS Inspection Form
Project Info
Field Tech : Colton Gotshall Date : 06/13/2023
Client : Aptus Project : JC Penney North Hills Redevelopment
Zone : Depressurization Utility Bank? No
Checklist
DESCRIPTION STATUS
Vapor pits Yes
Perforated horizontal pipes N/A
Solid horizontal pipes Yes
Washed gravel layer Yes
Membrane barrier N/A
Monitoring points N/A
Smoke test N/A
Vertical risers N/A
Seals in concrete slab penetrations/joints N/A
Fan installation and operation N/A
Stairwell N/A
Elevator pit N/A

Page 1 of 2
Photos/Notes

Notes : Pit W-1 in Building W was installed upon arrival. The pit and its associated 6 inch solid piping was installed in the correct location per the November 2021 VIMS 1.04
Drawing. Gravel was inspected during this inspection as well and was observed to be at least 6 inches of washed gravel throughout.
Sign-Off
Signature
<-- End of Form -->

Page 2 of 2
VIMS Inspection Form
Project Info
Field Tech : Colton Gotshall Date : 06/14/2023
Client : Aptus Project : JC Penney North Hills Redevelopment
Zone : Depressurization Utility Bank? Yes
Checklist
DESCRIPTION STATUS
Vapor pits Yes
Perforated horizontal pipes N/A
Solid horizontal pipes Yes
Washed gravel layer N/A
Membrane barrier N/A
Monitoring points N/A
Smoke test N/A
Vertical risers N/A
Seals in concrete slab penetrations/joints N/A
Fan installation and operation N/A
Stairwell N/A
Elevator pit N/A

Page 1 of 2
Photos/Notes

Notes : Some plumbing was removed since yesterdays inspection and the spoils from removing the pipes will be hauled off with new stone to be brought in for the small area
tomorrow.
Sign-Off
Signature
<-- End of Form -->

Page 2 of 2
VIMS Inspection Form
Project Info
Field Tech : Gary Fischer Date : 06/19/2023
Client : Aptus Project : JC Penney North Hills Redevelopment
Zone : Depressurization Utility Bank? Yes
Checklist
DESCRIPTION STATUS
Vapor pits Yes
Perforated horizontal pipes N/A
Solid horizontal pipes Yes
Washed gravel layer Yes
Membrane barrier Yes
Monitoring points Yes
Smoke test Yes
Vertical risers Yes
Seals in concrete slab penetrations/joints Yes
Fan installation and operation N/A
Stairwell Yes
Elevator pit Yes

Page 1 of 5
Photos/Notes

Page 2 of 5

Page 3 of 5

Page 4 of 5
Notes : Dustin Dickens of Buckeye Elm said they had planned on getting all of the barrier membrane down on Saturday. Dustin said they only had enough membrane to finish
half of the area. Dustin picked up more membrane on Saturday. They (3 man crew) ended up putting down the remainder of the membrane on Monday. They finished up putting
down the membrane @1315. The smoke test started at 1330. We did the test at 14 locations. They used an electric blower and a fogger to create the smoke during the test. I
had them go in all 4 directions at each location. They blew 3 times at each direction. There was a dozen locations where they had to patch with the liquid tar material due to
smoke coming out. The spray on adhesive seemed to work much better than the tape does. At the stub ups they would cut a round piece of the 20mil plastic and place it
around the pipe. They would then use a paint brush and apply the thick adhesive on top of it. Its the same material as the spray on but much thicker. The leaks were pretty
much evenly divided between the stub ups and at the footers. The test finished at 1545. Scott Miller from Brassfield & Gorrie was on site while we were doing the test.
Dustin (head of the crew) said they used up almost 3 - 55 gal. drums on the spray on adhesive. This doesnt include all they used of the brush on material. Buckeye also
installed 2 monitoring points (MP-19 & 20. The top of the points were 6"​ above the barrier membrane.
Sign-Off
Signature
<-- End of Form -->
Page 5 of 5
VIMS Inspection Form
Project Info
Field Tech : Gary Fischer Date : 07/07/2023
Client : Aptus Project : JC Penney North Hills Redevelopment
Zone : Depressurization Utility Bank? Yes
Checklist
DESCRIPTION STATUS
Vapor pits Yes
Perforated horizontal pipes Yes
Solid horizontal pipes N/A
Washed gravel layer Yes
Membrane barrier Yes
Monitoring points Yes
Smoke test N/A
Vertical risers Yes
Seals in concrete slab penetrations/joints Yes
Fan installation and operation N/A
Stairwell Yes
Elevator pit N/A

Page 1 of 3
Photos/Notes
Notes : I installed MP-22 and would have installed MP-21 but I couldn't find it. I got our 2 blowers from Brassfield and checked for influence at the 3 points MP-19, 20, & 22.
Our generator wouldn't start so I used a contractors drop cord to power the blower. I tested both risers individually but I wasn't able to run them at the same time. The
contractor was getting very impatient while I was using the power cord . The cord was hooked up to their chargers. When I hooked up to the blower farthest North these
were the readings I had MP-20 (10.7) MP-19 (30.4) MP-22 (3.9). When I hooked up to the riser to the South I had the following readings. MP-20 (11.0) MP-19 (3.7) MP-22
(12.5). I taped up both risers after I finished the test. I brought back both blowers.
Sign-Off
Signature
<-- End of Form -->
Page 2 of 3
VIMS Inspection Form
Project Info
Field Tech : Gary Fischer Date : 07/10/2023
Client : Aptus Project : JC Penney North Hills Redevelopment
Zone : Depressurization Utility Bank? Yes
Checklist
DESCRIPTION STATUS
Vapor pits N/A
Perforated horizontal pipes Yes
Solid horizontal pipes N/A
Washed gravel layer Yes
Membrane barrier Yes
Monitoring points Yes
Smoke test N/A
Vertical risers Yes
Seals in concrete slab penetrations/joints N/A
Fan installation and operation N/A
Stairwell Yes
Elevator pit N/A
Page 1 of 3
Photos/Notes
Page 2 of 3
Notes : I checked out a 2.5' by 8' cutout in the concrete and also a 1' by 1' cutout in the concrete. They are within a few feet of each other and are on the North side of Bldg.
W. The large area has what appears to be a French drain in it. The small cut out just has a 2"​ pvc pipe riser. Buckeye Elm came out this morning and patched the 20ml
membrane. They attached the membrane to the drain register and the 2"​ pvc pipe with brushed on material. They put a very generous amount of the material to seal off the
membrane. It all looked very good to me. I got to the site at 0945 and left at 1025
Sign-Off
Signature
<-- End of Form -->
Page 3 of 3
VIMS Inspection
Project Info
Field Tech: Colton Gotshall Date: 01/05/2024
Client: Aptus Project: JC Penney North Hills Redevelopment
Zone: Depressurization Utility Bank: No
Checklist
DESCRIPTION STATUS
Vapor pits N/A
Perforated horizontal pipes N/A
Solid horizontal pipes N/A
Washed gravel layer N/A
Membrane barrier N/A
Monitoring points Yes
Smoke test N/A
Vertical risers N/A
Seals in concrete slab penetrations/joints N/A
Fan installation and operation N/A
Stairwell N/A
Elevator pit N/A
Photos/Notes
Photos:

Page 1 of 4

Page 2 of 4

Notes:
Mid-Atlantic installed MP-21 in the Building W stairwell during this inspection. Mr. John Reeves
(Brassfield & Gorrie) gave the ok on the location of MP-21 prior to installation. VIMS fans were installed
in Building W upon arrival. MP-20 was not located during this inspection. Carpet installer is stated to be
en route and will locate the point this afternoon. MP-19 was located and is good to go. MP-22 was
located and is good to go; however, it appears as though flooring is about to be installed in the leasing
office area. I reminded John Reeves and Jason Green (Brassfield & Gorrie) that the monitoring point
needs to be flush with the flooring after install.
Sign-Off

Page 3 of 4
Signature:

Page 4 of 4

APPENDIX B INDOOR AIR BUILDING SURVEY AND SAMPLING FORM
EU 1
EU 2
EU 3
EU 4
Date Printed: 7/7/2022
Safety Data Sheet
* Trusted Quality Since 1921 *
www.rustoleum.com
1. Identification
Product Name:Varathane / Ultimate Polyurethane Water-
Based - Aerosol Revision Date:7/7/2022
Product Identifier:WPS1706160 Supercedes Date:New SDS
Recommended Use:WERCS Only
Supplier:Rust-Oleum Corporation
11 Hawthorn Parkway
Vernon Hills, IL 60061USA
Manufacturer:Rust-Oleum Corporation
11 Hawthorn Parkway
Vernon Hills, IL 60061USA
Preparer:Regulatory Department
24 Hour Hotline: [phone]Emergency Telephone:
2. Hazards Identification
Classification
Symbol(s) of Product
Signal Word
Danger
Possible Hazards
31% of the mixture consists of ingredient(s) of unknown acute toxicity.
GHS HAZARD STATEMENTS
Flammable Aerosol, category 1 H222 Extremely flammable aerosol.
Gases under Pressure; Compressed Gas H280 Contains gas under pressure; may explode if heated.
GHS LABEL PRECAUTIONARY STATEMENTS
P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. NOSMOKING.
P211 Do not spray on an open flame or other ignition source.
P251 Do not pierce or burn, even after use.
P410+P403 Protect from sunlight. Store in a well-ventilated place.
P410+P412 Protect from sunlight. Do not expose to temperatures exceeding 50°C (122°F).
3. Composition / Information on Ingredients
HAZARDOUS SUBSTANCES
Chemical Name CAS-No.Wt.%
Range
GHS Symbols GHS Statements
Dimethyl Ether 115-10-6 25-50 Not Available Not Available
No Information
Page 1 / 5
Date Printed: 7/7/2022
Dipropylene Glycol Monomethyl Ether 34590-94-8 2.5-10 Not Available Not Available
Ethanol 64-17-5 2.5-10 GHS02 H225
Propylene Glycol Monobutyl Ether 5131-66-8 1.0-2.5 GHS07 H302-315-319
2,4,7,9-Tetramethyl-5-Decyne-4,7-Diol 126-86-3 0.1-1.0 GHS05-GHS07 H302-312-317-318
Aqueous Ammonia 1336-21-6 0.1-1.0 GHS05-GHS07 H302-314-335
Oxirane, 2-Methyl-, Polymer with Oxirane, Monobutyl
Ether 9038-95-3 0.1-1.0 GHS06 H330
Triethylamine 121-44-8 0.1-1.0
GHS02-GHS05-
GHS06-GHS07 H225-302-311-314-332-335
4. First-Aid Measures
FIRST AID - EYE CONTACT:Immediately flush eyes with plenty of water for at least 15 minutes holding eyelids open. Get medical
attention. Do NOT allow rubbing of eyes or keeping eyes closed.
FIRST AID - SKIN CONTACT:Wash skin with soap and water. Remove contaminated clothing. Get medical attention if irritation
develops or persists.
FIRST AID - INHALATION:Remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get
immediate medical attention. Do NOT use mouth-to-mouth resuscitation. If you experience difficulty in breathing, leave the area to
obtain fresh air. If continued difficulty is experienced, get medical assistance immediately.
FIRST AID - INGESTION:Aspiration hazard: Do not induce vomiting or give anything by mouth because this material can enter the
lungs and cause severe lung damage. Get immediate medical attention. If swallowed, get medical attention.
5. Fire-Fighting Measures
EXTINGUISHING MEDIA:Alcohol Film Forming Foam, Carbon Dioxide, Dry Chemical, Dry Sand, Water Fog
UNUSUAL FIRE AND EXPLOSION HAZARDS:Water spray may be ineffective. Closed containers may explode when exposed to
extreme heat due to buildup of steam. Closed containers may explode when exposed to extreme heat. Vapors may form explosive
mixtures with air. Vapors can travel to a source of ignition and flash back. Isolate from heat, electrical equipment, sparks and open
flame. Perforation of the pressurized container may cause bursting of the can. FLASH POINT IS LESS THAN -7°C (20°F).
EXTREMELY FLAMMABLE LIQUID AND VAPOR!
SPECIAL FIREFIGHTING PROCEDURES:Water may be used to cool closed containers to prevent pressure buildup and possible
autoignition or explosion. Full protective equipment including self-contained breathing apparatus should be used. Evacuate area and
fight fire from a safe distance. Use water spray to keep fire-exposed containers cool. Containers may explode when heated.
Special Fire and Explosion Hazard (Combustible Dust):No Information
6. Accidental Release Measures
STEPS TO BE TAKEN IF MATERIAL IS RELEASED OR SPILLED:Contain spilled liquid with sand or earth. DO NOT use
combustible materials such as sawdust. Isolate the hazard area and deny entry to unnecessary and unprotected personnel. Remove
all sources of ignition, ventilate area and remove with inert absorbent and non-sparking tools. Dispose of according to local, state
(provincial) and federal regulations. Do not incinerate closed containers. Ventilate area, isolate spilled material, and remove with
inert absorbent. Dispose of contaminated absorbent, container, and unused contents in accordance with local, state, and federal regulations.
7. Handling and Storage
HANDLING:Wash thoroughly after handling. Wash hands before eating. Remove contaminated clothing and launder before reuse.
Use only with adequate ventilation. Follow all SDS and label precautions even after container is emptied because it may retain
product residues. Avoid breathing fumes, vapors, or mist. Avoid contact with eyes, skin and clothing.
STORAGE:Keep containers tightly closed. Isolate from heat, electrical equipment, sparks and open flame. Contents under
pressure. Do not store above 120°F (49°C). Store large quantities in buildings designed and protected for storage of flammable
aerosols. Keep away from heat, sparks, flame and sources of ignition. Avoid excess heat. Product should be stored in tightly sealed
containers and protected from heat, moisture, and foreign materials.
Advice on Safe Handling of Combustible Dust:No Information
No Information
Page 2 / 5
Date Printed: 7/7/2022
8. Exposure Controls / Personal Protection
Chemical Name CAS-No.Weight %
Less Than
ACGIH TLV-
TWA
ACGIH TLV-
STEL OSHA PEL-TWA OSHA PEL-
CEILING
Dimethyl Ether 115-10-6 30.0 N.E.N.E.N.E.N.E.
Dipropylene Glycol Monomethyl
Ether 34590-94-8 5.0 50 ppm N.E.100 ppm N.E.
Ethanol 64-17-5 5.0 N.E.1000 ppm 1000 ppm N.E.
Propylene Glycol Monobutyl
Ether 5131-66-8 5.0 N.E.N.E.N.E.N.E.
2,4,7,9-Tetramethyl-5-
Decyne-4,7-Diol 126-86-3 1.0 N.E.N.E.N.E.N.E.
Aqueous Ammonia 1336-21-6 1.0 N.E.N.E.N.E.N.E.
Oxirane, 2-Methyl-, Polymer
with Oxirane, Monobutyl Ether 9038-95-3 1.0 N.E.N.E.N.E.N.E.
Triethylamine 121-44-8 1.0 0.5 ppm 1 ppm 25 ppm N.E.
PERSONAL PROTECTION
ENGINEERING CONTROLS:Provide general dilution of local exhaust ventilation in volume and pattern to keep TLV of hazardous
ingredients below acceptable limits. Use process enclosures, local exhaust ventilation, or other engineering controls to control
airborne levels below recommended exposure limits. Use explosion-proof ventilation equipment. Prevent build-up of vapors by
opening all doors and windows to achieve cross-ventilation.
RESPIRATORY PROTECTION:A respiratory protection program that meets OSHA 1910.134 and ANSI Z88.2 requirements must be
followed whenever workplace conditions warrant a respirator's use. A NIOSH/MSHA approved air purifying respirator with organic
vapor cartridge or canister may be permissible under certain circumstances where airborne concentrations are expected to exceed
exposure limits.
SKIN PROTECTION:Use gloves to prevent prolonged skin contact. Nitrile or Neoprene gloves may afford adequate skin protection.
EYE PROTECTION:Use safety eyewear designed to protect against splash of liquids.
OTHER PROTECTIVE EQUIPMENT:Refer to safety supervisor or industrial hygienist for further guidance regarding types of
personal protective equipment and their applications.
HYGIENIC PRACTICES:Wash thoroughly with soap and water before eating, drinking or smoking. Remove contaminated clothing
immediately and launder before reuse.
Engineering Measures for Combustible Dust:No Information
9. Physical and Chemical Properties
Appearance:Aerosolized Mist Physical State:Liquid
Odor:Solvent Like N.E.Odor Threshold:
Specific Gravity:0.887 pH:N.A.
Freeze Point, °C:N.D.Viscosity:N.D.
Solubility in Water:Miscible Partition Coefficient, n-octanol/
water:N.D.Decomposition Temp., °C:N.D.
Boiling Range, °C:20.6 - 626 Explosive Limits, vol%:1.1 - 14.0
Flammability:Supports Combustion -41Flash Point, °C:
Evaporation Rate:Slower than Ether Auto-Ignition Temp., °C:N.D.
Vapor Density:Heavier than Air Vapor Pressure:N.D.
(See "Other information" Section for abbreviation legend)
10. Stability and Reactivity
Conditions to Avoid:Avoid temperatures above 120°F (49°C). Avoid all possible sources of ignition.
Incompatibility:Incompatible with strong oxidizing agents, strong acids and strong alkalies.
Hazardous Decomposition:By open flame, carbon monoxide and carbon dioxide. When heated to decomposition, it emits acrid
smoke and irritating fumes. Contains solvents which may form carbon monoxide, carbon dioxide, and formaldehyde.
Hazardous Polymerization:Will not occur under normal conditions.
Stability:This product is stable under normal storage conditions.
No Information
Page 3 / 5
Date Printed: 7/7/2022
11. Toxicological Information
EFFECTS OF OVEREXPOSURE - EYE CONTACT:Causes Serious Eye Irritation
EFFECTS OF OVEREXPOSURE - SKIN CONTACT:No Information
EFFECTS OF OVEREXPOSURE - INHALATION:Harmful if inhaled. High gas, vapor, mist or dust concentrations may be harmful if
inhaled. Avoid breathing fumes, spray, vapors, or mist. High vapor concentrations are irritating to the eyes, nose, throat and lungs.
Prolonged or excessive inhalation may cause respiratory tract irritation.
EFFECTS OF OVEREXPOSURE - INGESTION:Harmful if swallowed.
EFFECTS OF OVEREXPOSURE - CHRONIC HAZARDS:May cause central nervous system disorder (e.g., narcosis involving a
loss of coordination, weakness, fatigue, mental confusion, and blurred vision) and/or damage. High concentrations may lead to
central nervous system effects (drowsiness, dizziness, nausea, headaches, paralysis, and blurred vision) and/or damage. Reports
have associated repeated and prolonged occupational overexposure to solvents with permanent brain and nervous system damage.
PRIMARY ROUTE(S) OF ENTRY:Eye Contact, Ingestion, Inhalation, Skin Absorption, Skin Contact
ACUTE TOXICITY VALUES
The acute effects of this product have not been tested. Data on individual components are tabulated below:
CAS-No.Chemical Name Oral LD50 Dermal LD50 Vapor LC50
34590-94-8 Dipropylene Glycol Monomethyl Ether 5350 mg/kg Rat 9500 mg/kg Rabbit >20 mg/L
64-17-5 Ethanol 7060 mg/kg Rat 15,800 mg/kg Rabbit 30,000 mg/L Rat
5131-66-8 Propylene Glycol Monobutyl Ether 1900 mg/kg Rat >2000 mg/kg Rat N.E.
126-86-3 2,4,7,9-Tetramethyl-5-Decyne-4,7-Diol >500 mg/kg Rat >1000 mg/kg Rabbit N.E.
1336-21-6 Aqueous Ammonia 350 mg/kg Rat N.E.N.E.
9038-95-3 Oxirane, 2-Methyl-, Polymer with Oxirane,
Monobutyl Ether 5000 mg/kg Rat 14934 mg/kg Rabbit .1 mg/L Rat
121-44-8 Triethylamine 460 mg/kg Rat 415 mg/kg Rabbit 14.5 mg/L Rat
N.E. - Not Established
12. Ecological Information
ECOLOGICAL INFORMATION:Product is a mixture of listed components.
13. Disposal Information
DISPOSAL:Do not incinerate closed containers. This product as supplied is a USEPA defined ignitable hazardous waste. Dispose
of unusable product as a hazardous waste (D001) in accordance with local, state, and federal regulation.
14. Transport Information
Domestic (USDOT)International (IMDG)Air (IATA)TDG (Canada)
UN Number:N.A.1950 1950 N.A.
Proper Shipping Name:Paint and Related Spray
Products in Ltd Qty Aerosols Aerosols, flammable Aerosols
Hazard Class:N.A.2 2.1 N.A.
Packing Group:N.A.N.A.N.A.N.A.
Limited Quantity:Yes Yes Yes Yes
15. Regulatory Information
U.S. Federal Regulations:
CERCLA - SARA Hazard Category
This product has been reviewed according to the EPA ‘Hazard Categories’ promulgated under Sections 311 and 312 of theSuperfund Amendment and Reauthorization Act of 1986 (SARA Title III) and is considered, under applicable definitions, to
meet the following categories:
No Information
Page 4 / 5
Date Printed: 7/7/2022
Gas under pressure
SARA Section 313
This product contains the following substances subject to the reporting requirements of Section 313 of Title III of the
Superfund Amendment and Reauthorization Act of 1986 and 40 CFR part 372:
Chemical Name CAS-No.
Dipropylene Glycol Monomethyl Ether 34590-94-8
Aqueous Ammonia 1336-21-6
Triethylamine 121-44-8
Toxic Substances Control Act
This product contains the following chemical substances subject to the reporting requirements of TSCA 12(b) if exported from
the United States:
No TSCA 12(b) components exist in this product.
U.S. State Regulations:
California Proposition 65
WARNING:Cancer - www.P65Warnings.ca.gov.
16. Other Information
HMIS RATINGS
Health:2*Flammability:4 Physical Hazard:0 Personal Protection:X
NFPA RATINGS
Health:2 Flammability:4 Instability:0
Maximum Incremental Reactivity:0.44
7/7/2022SDS REVISION DATE:
REASON FOR REVISION:
Legend:N.A. - Not Applicable, N.D. - Not Determined, N.E. - Not Established
Rust-Oleum Corporation believes, to the best of its knowledge, information and belief, the information contained herein to be accurate and reliable as of the date of this safety data sheet. However, because the conditions of handling, use, and storage of these materials are beyond our control, we assume no responsibility or liability for personal injury or property damage incurred by the use of these materials. Rust-Oleum Corporation makes no warranty, expressed or implied, regarding the accuracy or reliability of the data or results obtained from their use. All materials may present unknown hazards and should be used with
caution. The information and recommendations in this material safety data sheet are offered for the users’ consideration and
examination. It is the responsibility of the user to determine the final suitability of this information and to comply with all applicable
international, federal, state, and local laws and regulations.
No Information
Page 5 / 5

APPENDIX C
FIELD NOTES
VIMS Inspection
Project Info
Field Tech: Colton Gotshall Date: 01/12/2024
Client: Aptus Project: JC Penney North Hills Redevelopment
Zone: Depressurization Utility Bank: No
Checklist
DESCRIPTION STATUS
Vapor pits N/A
Perforated horizontal pipes N/A
Solid horizontal pipes N/A
Washed gravel layer N/A
Membrane barrier N/A
Monitoring points N/A
Smoke test N/A
Vertical risers N/A
Seals in concrete slab penetrations/joints N/A
Fan installation and operation Yes
Stairwell Yes
Elevator pit N/A
Photos/Notes
Photos:

Page 1 of 4

Page 2 of 4

Notes:
Indoor Air samples setup and started for IA-1 and IA-19 through IA-22 in Building W. Paint odors
observed near IA-19 and DUP samples. No workers remained in Building W (ground level) upon arrival.
All 7 seven started by 1600. All canisters appeared to be properly working.
Sign-Off

Page 3 of 4
Signature:

Page 4 of 4

APPENDIX D

LABORATORY ANALYTICAL REPORTS AND CHAIN-OF-CUSTODY RECORDS FOR INDOOR/AMBIENT AIR
1/24/2024
Nolen Barefoot
Mid-Atlantic Associates, Inc.
409 Rogers View Court
Raleigh NC 27610
Project Name: North Hills - Building W
Project #:
Dear Nolen Barefoot
The following report includes the data for the above referenced project for sample(s)
received on 1/17/2024 at Eurofins Air Toxics LLC.
The data and associated QC analyzed by Modified TO-15 are compliant with the
project requirements or laboratory criteria with the exception of the deviations noted in
the attached case narrative.
Thank you for choosing Eurofins Air Toxics LLC. for your air analysis needs. Eurofins Air
Toxics Inc. is committed to providing accurate data of the highest quality. Please feel free
to contact the Project Manager: Brian Whittaker at 916-985-1000 if you have any
questions regarding the data in this report.
Regards,
Brian Whittaker
Project Manager
Workorder #: 2401288
Page 1 of 49
Nolen Barefoot
Mid-Atlantic Associates, Inc.
409 Rogers View Court
Raleigh, NC 27610
WORK ORDER #: 2401288
CLIENT:BILL TO:
PHONE:
Nolen Barefoot
Mid-Atlantic Associates, Inc.
409 Rogers View Court
Raleigh, NC 27610
919-250-9918
01/17/2024
DATE COMPLETED:01/24/2024
P.O. #R3746.02
PROJECT #North Hills - Building W
Work Order Summary
FAX:
DATE RECEIVED:CONTACT:Brian Whittaker
NAMEFRACTION #TEST VAC./PRES.
RECEIPT
PRESSURE
FINAL
01A IA-1 Modified TO-15 6.5 "Hg 2 psi
02A IA-19 Modified TO-15 10.0 "Hg 2 psi
03A IA-20 Modified TO-15 8.0 "Hg 2 psi
04A IA-21 Modified TO-15 8.5 "Hg 2 psi
05A IA-22 Modified TO-15 9.5 "Hg 2 psi
06A IA-DUP Modified TO-15 9.0 "Hg 2 psi
07A Ambient Modified TO-15 15.5 "Hg 2 psi
08A Lab Blank Modified TO-15 NA NA
08B Lab Blank Modified TO-15 NA NA
09A CCV Modified TO-15 NA NA
09B CCV Modified TO-15 NA NA
10A LCS Modified TO-15 NA NA
10AA LCSD Modified TO-15 NA NA
10B LCS Modified TO-15 NA NA
10BB LCSD Modified TO-15 NA NA
CERTIFIED BY:
Technical Director
DATE: 01/24/24
Page 2 of 49
Certification numbers: AZ Licensure AZ0775, FL NELAP – E87680, LA NELAP – 02089, NH NELAP – 209222, NJ NELAP - CA016,
NY NELAP - 11291, TX NELAP – T104704434-22-18, UT NELAP – CA009332022-14, VA NELAP - 12240, WA ELAP - C935
Name of Accreditation Body: NELAP/ORELAP (Oregon Environmental Laboratory Accreditation Program) CA300005-017
Eurofins Environment Testing Northern California, LLC certifies that the test results contained in this report meet
all requirements of the 2016 TNI Standard.
This report shall not be reproduced, except in full, without the written approval of Eurofins Air Toxics, LLC.
180 BLUE RAVINE ROAD, SUITE B FOLSOM, CA - 95630
[phone]
LABORATORY NARRATIVE
Modified TO-15
Mid-Atlantic Associates, Inc.
Workorder# 2401288
Seven 6 Liter Summa Canister (100% Certified) samples were received on January 17, 2024. The
laboratory performed analysis via modified EPA Method TO-15 using GC/MS in the full scan mode.
Method modifications taken to run these samples are summarized in the table below. Specific project
requirements may over-ride the EATL modifications.
Requirement ATL ModificationsTO-15
Initial Calibration </=30% RSD with 2
compounds allowed out
to < 40% RSD
</=30% RSD with 4 compounds allowed out to < 40%
RSD
Blank and standards Zero Air UHP Nitrogen provides a higher purity gas matrix than
zero air
Receiving Notes
The Chain of Custody (COC) was not relinquished properly. A time was not provided by the field
sampler.
Sample Ambient was received with significant vacuum remaining in the canister. The residual
canister vacuum resulted in elevated reporting limits.
As per client project requirements, the laboratory has reported estimated values for target compound
hits that are below the Reporting Limit but greater than the Method Detection Limit. Concentrations
that are below the level at which the canister was certified may be false positives.
All Quality Control Limit exceedances and affected sample results are noted by flags. Each flag is
defined at the bottom of this Case Narrative and on each Sample Result Summary page. Target
compound non-detects in the samples that are associated with high bias in QC analyses have not been
flagged.
Analytical Notes
Eight qualifiers may have been used on the data analysis sheets and indicates as follows:
B - Compound present in laboratory blank greater than reporting limit (background subtraction
not performed).
J - Estimated value.
E - Exceeds instrument calibration range.
S - Saturated peak.
Q - Exceeds quality control limits.
U - Compound analyzed for but not detected above the reporting limit, LOD, or MDL value. See
data page for project specific U-flag definition.
UJ- Non-detected compound associated with low bias in the CCV
Definition of Data Qualifying Flags
Page 3 of 49
N - The identification is based on presumptive evidence.
File extensions may have been used on the data analysis sheets and indicates
as follows:
a-File was requantified
b-File was quantified by a second column and detector
r1-File was requantified for the purpose of reissue
Page 4 of 49
Dilution Factor:Instrument/Filename:1/18/24 09:12 PM1.45msdv.i / v011812MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-01A1/13/24 04:00 PM6 Liter Summa Canister (100% Certified)North Hills - Building WIA-1Date/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)1,1,1-Trichloroethane71-55-60.790.15Not Detected0.631,1,2,2-Tetrachloroethane79-34-51.00.26Not Detected0.801,1,2-Trichloroethane79-00-50.790.25Not Detected0.631,1-Dichloroethane75-34-30.590.12Not Detected0.471,1-Dichloroethene75-35-40.570.14Not Detected0.461,2,4-Trichlorobenzene120-82-15.42.9Not Detected5.21,2,4-Trimethylbenzene95-63-60.710.191.40.571,2-Dibromoethane (EDB)106-93-41.10.27Not Detected0.891,2-Dichlorobenzene95-50-10.870.17Not Detected0.701,2-Dichloroethane107-06-20.590.14Not Detected0.471,2-Dichloropropane78-87-50.670.21Not Detected0.541,3,5-Trimethylbenzene108-67-80.710.180.42 J0.571,3-Butadiene106-99-00.320.14Not Detected0.261,3-Dichlorobenzene541-73-10.870.19Not Detected0.701,4-Dichlorobenzene106-46-70.870.14Not Detected0.701,4-Dioxane123-91-10.520.15Not Detected0.422-Butanone (Methyl Ethyl Ketone)78-93-32.10.211.2 J2.02-Hexanone591-78-63.00.67Not Detected2.82-Propanol67-63-07.10.542.3 J1.74-Ethyltoluene622-96-80.710.201.40.574-Methyl-2-pentanone108-10-10.590.12Not Detected0.48Acetone67-64-16.91.55.8 J1.6alpha-Chlorotoluene100-44-70.750.17Not Detected0.60Benzene71-43-20.460.0681.00.37Page 5 of 49
Dilution Factor:Instrument/Filename:1/18/24 09:12 PM1.45msdv.i / v011812MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-01A1/13/24 04:00 PM6 Liter Summa Canister (100% Certified)North Hills - Building WIA-1Date/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Bromodichloromethane75-27-40.970.21Not Detected0.78Bromoform75-25-21.50.27Not Detected1.2Bromomethane74-83-9281.6Not Detected2.7Carbon Disulfide75-15-02.22.1Not Detected2.2Carbon Tetrachloride56-23-50.910.190.21 J0.73Chlorobenzene108-90-70.670.19Not Detected0.53Chloroethane75-00-31.90.52Not Detected1.8Chloroform67-66-30.710.15Not Detected0.57Chloromethane74-87-31.50.470.84 J1.4cis-1,2-Dichloroethene156-59-20.570.30Not Detected0.46cis-1,3-Dichloropropene10061-01-50.660.12Not Detected0.53Cyclohexane110-82-72.50.49Not Detected2.4Dibromochloromethane124-48-11.20.20Not Detected0.99Ethanol64-17-55.50.58111.3Ethyl Acetate141-78-62.60.73Not DetectedDEthyl Benzene100-41-40.630.140.56 J0.50Freon 1175-69-40.810.130.840.65Freon 11376-13-11.10.210.29 J0.89Freon 11476-14-21.00.23Not Detected0.81Freon 1275-71-83.60.501.6 J3.4Heptane142-82-53.00.46Not Detected2.8Hexachlorobutadiene87-68-37.71.8Not Detected7.4Hexane110-54-32.60.62Not Detected2.4m,p-Xylene108-38-30.630.272.10.50Page 6 of 49
Dilution Factor:Instrument/Filename:1/18/24 09:12 PM1.45msdv.i / v011812MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-01A1/13/24 04:00 PM6 Liter Summa Canister (100% Certified)North Hills - Building WIA-1Date/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Methyl tert-butyl ether1634-04-40.520.16Not Detected0.42Methylene Chloride75-09-21.00.220.29 J0.40Naphthalene91-20-31.50.46Not Detected0.91o-Xylene95-47-60.630.190.820.50Propylene115-07-12.50.26Not Detected1.2Styrene100-42-50.620.17Not Detected0.49Tetrachloroethene127-18-40.980.24Not Detected0.79Tetrahydrofuran109-99-92.12.0Not Detected2.0Toluene108-88-30.550.0962.20.44trans-1,2-Dichloroethene156-60-50.570.21Not Detected0.46trans-1,3-Dichloropropene10061-02-60.660.19Not Detected0.53Trichloroethene79-01-60.780.091Not Detected0.62Vinyl Acetate108-05-42.60.57Not Detected2.4Vinyl Chloride75-01-40.370.088Not Detected0.30J = Estimated value.D: Analyte not within the DoD scope of accreditation.CAS#SurrogatesLimits%Recovery1,2-Dichloroethane-d417060-07-070-130994-Bromofluorobenzene460-00-470-130103Toluene-d82037-26-570-130105Page 7 of 49
Dilution Factor:Instrument/Filename:1/18/24 09:51 PM1.70msdv.i / v011813MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-02A1/13/24 03:15 PM6 Liter Summa Canister (100% Certified)North Hills - Building WIA-19Date/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)1,1,1-Trichloroethane71-55-60.930.18Not Detected0.741,1,2,2-Tetrachloroethane79-34-51.20.30Not Detected0.931,1,2-Trichloroethane79-00-50.930.29Not Detected0.741,1-Dichloroethane75-34-30.690.15Not Detected0.551,1-Dichloroethene75-35-40.670.16Not Detected0.541,2,4-Trichlorobenzene120-82-16.33.4Not Detected6.01,2,4-Trimethylbenzene95-63-60.840.221.10.671,2-Dibromoethane (EDB)106-93-41.30.32Not Detected1.01,2-Dichlorobenzene95-50-11.00.20Not Detected0.821,2-Dichloroethane107-06-20.690.17Not Detected0.551,2-Dichloropropane78-87-50.780.25Not Detected0.631,3,5-Trimethylbenzene108-67-80.840.200.34 J0.671,3-Butadiene106-99-00.380.16Not Detected0.301,3-Dichlorobenzene541-73-11.00.22Not Detected0.821,4-Dichlorobenzene106-46-71.00.17Not Detected0.821,4-Dioxane123-91-10.610.180.650.492-Butanone (Methyl Ethyl Ketone)78-93-32.50.25342.42-Hexanone591-78-63.50.78Not Detected3.32-Propanol67-63-08.40.64272.04-Ethyltoluene622-96-80.840.240.82 J0.674-Methyl-2-pentanone108-10-10.700.140.790.56Acetone67-64-18.11.8170 E1.9alpha-Chlorotoluene100-44-70.880.20Not Detected0.70Benzene71-43-20.540.0800.590.43Page 8 of 49
Dilution Factor:Instrument/Filename:1/18/24 09:51 PM1.70msdv.i / v011813MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-02A1/13/24 03:15 PM6 Liter Summa Canister (100% Certified)North Hills - Building WIA-19Date/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Bromodichloromethane75-27-41.10.24Not Detected0.91Bromoform75-25-21.80.32Not Detected1.4Bromomethane74-83-9331.9Not Detected3.2Carbon Disulfide75-15-02.62.5Not Detected2.5Carbon Tetrachloride56-23-51.10.220.23 J0.86Chlorobenzene108-90-70.780.22Not Detected0.63Chloroethane75-00-32.20.62Not Detected2.2Chloroform67-66-30.830.18Not Detected0.66Chloromethane74-87-31.80.550.81 J1.7cis-1,2-Dichloroethene156-59-20.670.35Not Detected0.54cis-1,3-Dichloropropene10061-01-50.770.14Not Detected0.62Cyclohexane110-82-72.90.57762.8Dibromochloromethane124-48-11.40.23Not Detected1.2Ethanol64-17-56.40.68441.5Ethyl Acetate141-78-63.10.855.1DEthyl Benzene100-41-40.740.174.50.59Freon 1175-69-40.960.150.79 J0.76Freon 11376-13-11.30.25Not Detected1.0Freon 11476-14-21.20.27Not Detected0.95Freon 1275-71-84.20.58Not Detected4.0Heptane142-82-53.50.544.13.3Hexachlorobutadiene87-68-39.12.1Not Detected8.7Hexane110-54-33.00.722.7 J2.9m,p-Xylene108-38-30.740.31210.59Page 9 of 49
Dilution Factor:Instrument/Filename:1/18/24 09:51 PM1.70msdv.i / v011813MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-02A1/13/24 03:15 PM6 Liter Summa Canister (100% Certified)North Hills - Building WIA-19Date/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Methyl tert-butyl ether1634-04-40.610.18Not Detected0.49Methylene Chloride75-09-21.20.262.60.47Naphthalene91-20-31.80.53Not Detected1.1o-Xylene95-47-60.740.237.20.59Propylene115-07-12.90.31Not Detected1.4Styrene100-42-50.720.203.00.58Tetrachloroethene127-18-41.20.28Not Detected0.92Tetrahydrofuran109-99-92.52.4192.4Toluene108-88-30.640.111000.51trans-1,2-Dichloroethene156-60-50.670.25Not Detected0.54trans-1,3-Dichloropropene10061-02-60.770.23Not Detected0.62Trichloroethene79-01-60.910.111.20.73Vinyl Acetate108-05-43.00.67Not Detected2.9Vinyl Chloride75-01-40.430.10Not Detected0.35E = Exceeds instrument calibration range.J = Estimated value.D: Analyte not within the DoD scope of accreditation.CAS#SurrogatesLimits%Recovery1,2-Dichloroethane-d417060-07-070-1301004-Bromofluorobenzene460-00-470-130112Toluene-d82037-26-570-13099Page 10 of 49
Dilution Factor:Instrument/Filename:1/19/24 04:21 PM1.55msdv.i / v011911MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-03A1/13/24 03:25 PM6 Liter Summa Canister (100% Certified)North Hills - Building WIA-20Date/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)1,1,1-Trichloroethane71-55-60.840.16Not Detected0.681,1,2,2-Tetrachloroethane79-34-51.10.28Not Detected0.851,1,2-Trichloroethane79-00-50.840.26Not Detected0.681,1-Dichloroethane75-34-30.630.13Not Detected0.501,1-Dichloroethene75-35-40.610.15Not Detected0.491,2,4-Trichlorobenzene120-82-15.83.1Not Detected5.51,2,4-Trimethylbenzene95-63-60.760.200.950.611,2-Dibromoethane (EDB)106-93-41.20.29Not Detected0.951,2-Dichlorobenzene95-50-10.930.18Not Detected0.741,2-Dichloroethane107-06-20.630.15Not Detected0.501,2-Dichloropropane78-87-50.720.23Not Detected0.571,3,5-Trimethylbenzene108-67-80.760.190.22 J0.611,3-Butadiene106-99-00.340.14Not Detected0.271,3-Dichlorobenzene541-73-10.930.20Not Detected0.741,4-Dichlorobenzene106-46-70.930.15Not Detected0.741,4-Dioxane123-91-10.560.160.42 J0.452-Butanone (Methyl Ethyl Ketone)78-93-32.30.23242.22-Hexanone591-78-63.20.71Not Detected3.02-Propanol67-63-07.60.58281.84-Ethyltoluene622-96-80.760.21Not Detected0.614-Methyl-2-pentanone108-10-10.630.120.750.51Acetone67-64-17.41.6761.8alpha-Chlorotoluene100-44-70.800.18Not Detected0.64Benzene71-43-20.500.0730.560.40Page 11 of 49
Dilution Factor:Instrument/Filename:1/19/24 04:21 PM1.55msdv.i / v011911MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-03A1/13/24 03:25 PM6 Liter Summa Canister (100% Certified)North Hills - Building WIA-20Date/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Bromodichloromethane75-27-41.00.22Not Detected0.83Bromoform75-25-21.60.29Not Detected1.3Bromomethane74-83-9301.7Not Detected2.9Carbon Disulfide75-15-02.42.3Not Detected2.3Carbon Tetrachloride56-23-50.980.20Not Detected0.78Chlorobenzene108-90-70.710.20Not Detected0.57Chloroethane75-00-32.00.56Not Detected2.0Chloroform67-66-30.760.16Not Detected0.60Chloromethane74-87-31.60.500.64 J1.5cis-1,2-Dichloroethene156-59-20.610.32Not Detected0.49cis-1,3-Dichloropropene10061-01-50.700.12Not Detected0.56Cyclohexane110-82-72.70.52252.6Dibromochloromethane124-48-11.30.21Not Detected1.0Ethanol64-17-55.80.62471.4Ethyl Acetate141-78-62.80.783.8DEthyl Benzene100-41-40.670.152.70.54Freon 1175-69-40.870.140.77 J0.70Freon 11376-13-11.20.23Not Detected0.95Freon 11476-14-21.10.25Not Detected0.87Freon 1275-71-83.80.531.4 J3.7Heptane142-82-53.20.491.7 J3.0Hexachlorobutadiene87-68-38.31.9Not Detected7.9Hexane110-54-32.70.660.99 J2.6m,p-Xylene108-38-30.670.29110.54Page 12 of 49
Dilution Factor:Instrument/Filename:1/19/24 04:21 PM1.55msdv.i / v011911MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-03A1/13/24 03:25 PM6 Liter Summa Canister (100% Certified)North Hills - Building WIA-20Date/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Methyl tert-butyl ether1634-04-40.560.17Not Detected0.45Methylene Chloride75-09-21.10.241.40.43Naphthalene91-20-31.60.49Not Detected0.98o-Xylene95-47-60.670.214.20.54Propylene115-07-12.70.28Not Detected1.3Styrene100-42-50.660.183.00.53Tetrachloroethene127-18-41.00.26Not Detected0.84Tetrahydrofuran109-99-92.32.2152.2Toluene108-88-30.580.10380.47trans-1,2-Dichloroethene156-60-50.610.23Not Detected0.49trans-1,3-Dichloropropene10061-02-60.700.21Not Detected0.56Trichloroethene79-01-60.830.0980.27 J0.67Vinyl Acetate108-05-42.70.61Not Detected2.6Vinyl Chloride75-01-40.400.094Not Detected0.32J = Estimated value.D: Analyte not within the DoD scope of accreditation.CAS#SurrogatesLimits%Recovery1,2-Dichloroethane-d417060-07-070-130924-Bromofluorobenzene460-00-470-130109Toluene-d82037-26-570-130104Page 13 of 49
Dilution Factor:Instrument/Filename:1/18/24 10:31 PM1.58msdv.i / v011814MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-04A1/13/24 03:45 PM6 Liter Summa Canister (100% Certified)North Hills - Building WIA-21Date/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)1,1,1-Trichloroethane71-55-60.860.17Not Detected0.691,1,2,2-Tetrachloroethane79-34-51.10.28Not Detected0.871,1,2-Trichloroethane79-00-50.860.27Not Detected0.691,1-Dichloroethane75-34-30.640.14Not Detected0.511,1-Dichloroethene75-35-40.630.15Not Detected0.501,2,4-Trichlorobenzene120-82-15.93.2Not Detected5.61,2,4-Trimethylbenzene95-63-60.780.211.30.621,2-Dibromoethane (EDB)106-93-41.20.30Not Detected0.971,2-Dichlorobenzene95-50-10.950.19Not Detected0.761,2-Dichloroethane107-06-20.640.15Not Detected0.511,2-Dichloropropane78-87-50.730.23Not Detected0.581,3,5-Trimethylbenzene108-67-80.780.190.36 J0.621,3-Butadiene106-99-00.350.15Not Detected0.281,3-Dichlorobenzene541-73-10.950.21Not Detected0.761,4-Dichlorobenzene106-46-70.950.15Not Detected0.761,4-Dioxane123-91-10.570.17Not Detected0.462-Butanone (Methyl Ethyl Ketone)78-93-32.30.23352.22-Hexanone591-78-63.20.73Not Detected3.12-Propanol67-63-07.80.59401.94-Ethyltoluene622-96-80.780.220.950.624-Methyl-2-pentanone108-10-10.650.131.60.52Acetone67-64-17.51.71301.8alpha-Chlorotoluene100-44-70.820.19Not Detected0.65Benzene71-43-20.500.0740.610.40Page 14 of 49
Dilution Factor:Instrument/Filename:1/18/24 10:31 PM1.58msdv.i / v011814MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-04A1/13/24 03:45 PM6 Liter Summa Canister (100% Certified)North Hills - Building WIA-21Date/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Bromodichloromethane75-27-41.00.22Not Detected0.85Bromoform75-25-21.60.30Not Detected1.3Bromomethane74-83-9311.8Not Detected2.9Carbon Disulfide75-15-02.52.3Not Detected2.4Carbon Tetrachloride56-23-50.990.210.25 J0.80Chlorobenzene108-90-70.730.20Not Detected0.58Chloroethane75-00-32.10.57Not Detected2.0Chloroform67-66-30.770.17Not Detected0.62Chloromethane74-87-31.60.51Not Detected1.6cis-1,2-Dichloroethene156-59-20.630.32Not Detected0.50cis-1,3-Dichloropropene10061-01-50.720.13Not Detected0.57Cyclohexane110-82-72.70.532.4 J2.6Dibromochloromethane124-48-11.30.22Not Detected1.1Ethanol64-17-56.00.631101.4Ethyl Acetate141-78-62.80.795.5DEthyl Benzene100-41-40.690.162.10.55Freon 1175-69-40.890.140.87 J0.71Freon 11376-13-11.20.23Not Detected0.97Freon 11476-14-21.10.25Not Detected0.88Freon 1275-71-83.90.541.5 J3.8Heptane142-82-53.20.502.2 J3.1Hexachlorobutadiene87-68-38.41.9Not Detected8.1Hexane110-54-32.80.67Not Detected2.7m,p-Xylene108-38-30.690.298.20.55Page 15 of 49
Dilution Factor:Instrument/Filename:1/18/24 10:31 PM1.58msdv.i / v011814MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-04A1/13/24 03:45 PM6 Liter Summa Canister (100% Certified)North Hills - Building WIA-21Date/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Methyl tert-butyl ether1634-04-40.570.17Not Detected0.46Methylene Chloride75-09-21.10.242.90.44Naphthalene91-20-31.60.50Not Detected0.99o-Xylene95-47-60.690.213.70.55Propylene115-07-12.70.29Not Detected1.3Styrene100-42-50.670.187.50.54Tetrachloroethene127-18-41.10.26Not Detected0.86Tetrahydrofuran109-99-92.32.2132.2Toluene108-88-30.600.10160.48trans-1,2-Dichloroethene156-60-50.630.23Not Detected0.50trans-1,3-Dichloropropene10061-02-60.720.21Not Detected0.57Trichloroethene79-01-60.850.099Not Detected0.68Vinyl Acetate108-05-42.80.62Not Detected2.7Vinyl Chloride75-01-40.400.095Not Detected0.32J = Estimated value.D: Analyte not within the DoD scope of accreditation.CAS#SurrogatesLimits%Recovery1,2-Dichloroethane-d417060-07-070-130984-Bromofluorobenzene460-00-470-130109Toluene-d82037-26-570-130102Page 16 of 49
Dilution Factor:Instrument/Filename:1/19/24 05:00 PM1.66msdv.i / v011912MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-05A1/13/24 03:38 PM6 Liter Summa Canister (100% Certified)North Hills - Building WIA-22Date/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)1,1,1-Trichloroethane71-55-60.900.18Not Detected0.721,1,2,2-Tetrachloroethane79-34-51.10.30Not Detected0.911,1,2-Trichloroethane79-00-50.900.28Not Detected0.721,1-Dichloroethane75-34-30.670.14Not Detected0.541,1-Dichloroethene75-35-40.660.16Not Detected0.531,2,4-Trichlorobenzene120-82-16.23.3Not Detected5.91,2,4-Trimethylbenzene95-63-60.820.221.50.651,2-Dibromoethane (EDB)106-93-41.30.31Not Detected1.01,2-Dichlorobenzene95-50-11.00.20Not Detected0.801,2-Dichloroethane107-06-20.670.16Not Detected0.541,2-Dichloropropane78-87-50.770.24Not Detected0.611,3,5-Trimethylbenzene108-67-80.820.200.42 J0.651,3-Butadiene106-99-00.370.15Not Detected0.291,3-Dichlorobenzene541-73-11.00.22Not Detected0.801,4-Dichlorobenzene106-46-71.00.16Not Detected0.801,4-Dioxane123-91-10.600.170.770.482-Butanone (Methyl Ethyl Ketone)78-93-32.40.24212.32-Hexanone591-78-63.40.76Not Detected3.32-Propanol67-63-08.20.62262.04-Ethyltoluene622-96-80.820.230.36 J0.654-Methyl-2-pentanone108-10-10.680.130.680.54Acetone67-64-17.91.8591.9alpha-Chlorotoluene100-44-70.860.20Not Detected0.69Benzene71-43-20.530.0780.570.42Page 17 of 49
Dilution Factor:Instrument/Filename:1/19/24 05:00 PM1.66msdv.i / v011912MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-05A1/13/24 03:38 PM6 Liter Summa Canister (100% Certified)North Hills - Building WIA-22Date/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Bromodichloromethane75-27-41.10.24Not Detected0.89Bromoform75-25-21.70.31Not Detected1.4Bromomethane74-83-9321.8Not Detected3.1Carbon Disulfide75-15-02.62.4Not Detected2.5Carbon Tetrachloride56-23-51.00.220.25 J0.84Chlorobenzene108-90-70.760.21Not Detected0.61Chloroethane75-00-32.20.60Not Detected2.1Chloroform67-66-30.810.18Not Detected0.65Chloromethane74-87-31.70.530.65 J1.6cis-1,2-Dichloroethene156-59-20.660.34Not Detected0.53cis-1,3-Dichloropropene10061-01-50.750.13Not Detected0.60Cyclohexane110-82-72.80.561.6 J2.7Dibromochloromethane124-48-11.40.23Not Detected1.1Ethanol64-17-56.20.66521.5Ethyl Acetate141-78-63.00.831.6 JDEthyl Benzene100-41-40.720.162.60.58Freon 1175-69-40.930.150.71 J0.75Freon 11376-13-11.30.240.33 J1.0Freon 11476-14-21.20.27Not Detected0.93Freon 1275-71-84.10.571.3 J3.9Heptane142-82-53.40.520.87 J3.3Hexachlorobutadiene87-68-38.82.0Not Detected8.5Hexane110-54-32.90.70Not Detected2.8m,p-Xylene108-38-30.720.31100.58Page 18 of 49
Dilution Factor:Instrument/Filename:1/19/24 05:00 PM1.66msdv.i / v011912MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-05A1/13/24 03:38 PM6 Liter Summa Canister (100% Certified)North Hills - Building WIA-22Date/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Methyl tert-butyl ether1634-04-40.600.18Not Detected0.48Methylene Chloride75-09-21.20.263.80.46Naphthalene91-20-31.70.52Not Detected1.0o-Xylene95-47-60.720.223.70.58Propylene115-07-12.80.30Not Detected1.4Styrene100-42-50.710.193.40.56Tetrachloroethene127-18-41.10.27Not Detected0.90Tetrahydrofuran109-99-92.42.3142.3Toluene108-88-30.620.11130.50trans-1,2-Dichloroethene156-60-50.660.24Not Detected0.53trans-1,3-Dichloropropene10061-02-60.750.22Not Detected0.60Trichloroethene79-01-60.890.10Not Detected0.71Vinyl Acetate108-05-42.90.65Not Detected2.8Vinyl Chloride75-01-40.420.10Not Detected0.34J = Estimated value.D: Analyte not within the DoD scope of accreditation.CAS#SurrogatesLimits%Recovery1,2-Dichloroethane-d417060-07-070-130934-Bromofluorobenzene460-00-470-130114Toluene-d82037-26-570-130104Page 19 of 49
Dilution Factor:Instrument/Filename:1/19/24 05:40 PM1.62msdv.i / v011913MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-06A1/13/24 03:17 PM6 Liter Summa Canister (100% Certified)North Hills - Building WIA-DUPDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)1,1,1-Trichloroethane71-55-60.880.17Not Detected0.711,1,2,2-Tetrachloroethane79-34-51.10.29Not Detected0.891,1,2-Trichloroethane79-00-50.880.28Not Detected0.711,1-Dichloroethane75-34-30.660.14Not Detected0.521,1-Dichloroethene75-35-40.640.16Not Detected0.511,2,4-Trichlorobenzene120-82-16.03.2Not Detected5.81,2,4-Trimethylbenzene95-63-60.800.211.20.641,2-Dibromoethane (EDB)106-93-41.20.30Not Detected1.01,2-Dichlorobenzene95-50-10.970.19Not Detected0.781,2-Dichloroethane107-06-20.660.16Not Detected0.521,2-Dichloropropane78-87-50.750.24Not Detected0.601,3,5-Trimethylbenzene108-67-80.800.200.30 J0.641,3-Butadiene106-99-00.360.15Not Detected0.291,3-Dichlorobenzene541-73-10.970.21Not Detected0.781,4-Dichlorobenzene106-46-70.970.16Not Detected0.781,4-Dioxane123-91-10.580.170.54 J0.472-Butanone (Methyl Ethyl Ketone)78-93-32.40.24292.32-Hexanone591-78-63.30.74Not Detected3.22-Propanol67-63-08.00.61281.94-Ethyltoluene622-96-80.800.220.880.644-Methyl-2-pentanone108-10-10.660.130.740.53Acetone67-64-17.71.71301.8alpha-Chlorotoluene100-44-70.840.19Not Detected0.67Benzene71-43-20.520.0760.550.41Page 20 of 49
Dilution Factor:Instrument/Filename:1/19/24 05:40 PM1.62msdv.i / v011913MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-06A1/13/24 03:17 PM6 Liter Summa Canister (100% Certified)North Hills - Building WIA-DUPDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Bromodichloromethane75-27-41.10.23Not Detected0.87Bromoform75-25-21.70.31Not Detected1.3Bromomethane74-83-9311.8Not Detected3.0Carbon Disulfide75-15-02.52.4Not Detected2.4Carbon Tetrachloride56-23-51.00.210.26 J0.82Chlorobenzene108-90-70.740.21Not Detected0.60Chloroethane75-00-32.10.59Not Detected2.0Chloroform67-66-30.790.17Not Detected0.63Chloromethane74-87-31.70.520.63 J1.6cis-1,2-Dichloroethene156-59-20.640.33Not Detected0.51cis-1,3-Dichloropropene10061-01-50.740.13Not Detected0.59Cyclohexane110-82-72.80.54652.7Dibromochloromethane124-48-11.40.22Not Detected1.1Ethanol64-17-56.10.64411.5Ethyl Acetate141-78-62.90.814.5DEthyl Benzene100-41-40.700.163.70.56Freon 1175-69-40.910.140.67 J0.73Freon 11376-13-11.20.24Not Detected0.99Freon 11476-14-21.10.26Not Detected0.91Freon 1275-71-84.00.561.3 J3.8Heptane142-82-53.30.513.63.2Hexachlorobutadiene87-68-38.62.0Not Detected8.3Hexane110-54-32.80.692.4 J2.7m,p-Xylene108-38-30.700.30180.56Page 21 of 49
Dilution Factor:Instrument/Filename:1/19/24 05:40 PM1.62msdv.i / v011913MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-06A1/13/24 03:17 PM6 Liter Summa Canister (100% Certified)North Hills - Building WIA-DUPDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Methyl tert-butyl ether1634-04-40.580.18Not Detected0.47Methylene Chloride75-09-21.10.252.30.45Naphthalene91-20-31.70.51Not Detected1.0o-Xylene95-47-60.700.226.30.56Propylene115-07-12.80.29Not Detected1.3Styrene100-42-50.690.192.90.55Tetrachloroethene127-18-41.10.27Not Detected0.88Tetrahydrofuran109-99-92.42.2172.3Toluene108-88-30.610.11820.49trans-1,2-Dichloroethene156-60-50.640.24Not Detected0.51trans-1,3-Dichloropropene10061-02-60.740.22Not Detected0.59Trichloroethene79-01-60.870.101.00.70Vinyl Acetate108-05-42.80.64Not Detected2.7Vinyl Chloride75-01-40.410.098Not Detected0.33J = Estimated value.D: Analyte not within the DoD scope of accreditation.CAS#SurrogatesLimits%Recovery1,2-Dichloroethane-d417060-07-070-130944-Bromofluorobenzene460-00-470-130116Toluene-d82037-26-570-130102Page 22 of 49
Dilution Factor:Instrument/Filename:1/19/24 06:20 PM2.35msdv.i / v011914MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-07A1/13/24 03:20 PM6 Liter Summa Canister (100% Certified)North Hills - Building WAmbientDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)1,1,1-Trichloroethane71-55-61.30.25Not Detected1.01,1,2,2-Tetrachloroethane79-34-51.60.42Not Detected1.31,1,2-Trichloroethane79-00-51.30.40Not Detected1.01,1-Dichloroethane75-34-30.950.20Not Detected0.761,1-Dichloroethene75-35-40.930.23Not Detected0.741,2,4-Trichlorobenzene120-82-18.74.7Not Detected8.41,2,4-Trimethylbenzene95-63-61.20.31Not Detected0.921,2-Dibromoethane (EDB)106-93-41.80.44Not Detected1.41,2-Dichlorobenzene95-50-11.40.28Not Detected1.11,2-Dichloroethane107-06-20.950.23Not Detected0.761,2-Dichloropropane78-87-51.10.34Not Detected0.871,3,5-Trimethylbenzene108-67-81.20.28Not Detected0.921,3-Butadiene106-99-00.520.22Not Detected0.421,3-Dichlorobenzene541-73-11.40.31Not Detected1.11,4-Dichlorobenzene106-46-71.40.23Not Detected1.11,4-Dioxane123-91-10.850.25Not Detected0.682-Butanone (Methyl Ethyl Ketone)78-93-33.50.355.03.32-Hexanone591-78-64.81.1Not Detected4.62-Propanol67-63-0120.881.1 J2.84-Ethyltoluene622-96-81.20.320.35 J0.924-Methyl-2-pentanone108-10-10.960.19Not Detected0.77Acetone67-64-1112.5132.7alpha-Chlorotoluene100-44-71.20.28Not Detected0.97Benzene71-43-20.750.110.35 J0.60Page 23 of 49
Dilution Factor:Instrument/Filename:1/19/24 06:20 PM2.35msdv.i / v011914MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-07A1/13/24 03:20 PM6 Liter Summa Canister (100% Certified)North Hills - Building WAmbientDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Bromodichloromethane75-27-41.60.33Not Detected1.2Bromoform75-25-22.40.44Not Detected1.9Bromomethane74-83-9462.6Not Detected4.4Carbon Disulfide75-15-03.63.4Not Detected3.5Carbon Tetrachloride56-23-51.50.31Not Detected1.2Chlorobenzene108-90-71.10.30Not Detected0.86Chloroethane75-00-33.10.85Not Detected3.0Chloroform67-66-31.10.25Not Detected0.92Chloromethane74-87-32.40.760.76 J2.3cis-1,2-Dichloroethene156-59-20.930.48Not Detected0.74cis-1,3-Dichloropropene10061-01-51.10.19Not Detected0.85Cyclohexane110-82-74.00.79Not Detected3.9Dibromochloromethane124-48-12.00.32Not Detected1.6Ethanol64-17-58.80.932.2 J2.1Ethyl Acetate141-78-64.21.2Not DetectedDEthyl Benzene100-41-41.00.230.25 J0.82Freon 1175-69-41.30.210.79 J1.0Freon 11376-13-11.80.34Not Detected1.4Freon 11476-14-21.60.38Not Detected1.3Freon 1275-71-85.80.811.4 J5.6Heptane142-82-54.80.74Not Detected4.6Hexachlorobutadiene87-68-3122.9Not Detected12Hexane110-54-34.11.0Not Detected4.0m,p-Xylene108-38-31.00.430.72 J0.82Page 24 of 49
Dilution Factor:Instrument/Filename:1/19/24 06:20 PM2.35msdv.i / v011914MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-07A1/13/24 03:20 PM6 Liter Summa Canister (100% Certified)North Hills - Building WAmbientDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Methyl tert-butyl ether1634-04-40.850.26Not Detected0.68Methylene Chloride75-09-21.60.36Not Detected0.65Naphthalene91-20-32.50.74Not Detected1.5o-Xylene95-47-61.00.320.32 J0.82Propylene115-07-14.00.43Not Detected1.9Styrene100-42-51.00.27Not Detected0.80Tetrachloroethene127-18-41.60.39Not Detected1.3Tetrahydrofuran109-99-93.53.3Not Detected3.3Toluene108-88-30.880.160.950.71trans-1,2-Dichloroethene156-60-50.930.341.50.74trans-1,3-Dichloropropene10061-02-61.10.32Not Detected0.85Trichloroethene79-01-61.30.15Not Detected1.0Vinyl Acetate108-05-44.10.92Not Detected4.0Vinyl Chloride75-01-40.600.14Not Detected0.48J = Estimated value.D: Analyte not within the DoD scope of accreditation.CAS#SurrogatesLimits%Recovery1,2-Dichloroethane-d417060-07-070-130974-Bromofluorobenzene460-00-470-130110Toluene-d82037-26-570-130109Page 25 of 49
Dilution Factor:Instrument/Filename:1/18/24 01:18 PM1.00msdv.i / v011808cMODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-08ANA - Not ApplicableNA - Not ApplicableNorth Hills - Building WLab BlankDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)1,1,1-Trichloroethane71-55-60.540.11Not Detected0.441,1,2,2-Tetrachloroethane79-34-50.690.18Not Detected0.551,1,2-Trichloroethane79-00-50.540.17Not Detected0.441,1-Dichloroethane75-34-30.400.086Not Detected0.321,1-Dichloroethene75-35-40.400.098Not Detected0.321,2,4-Trichlorobenzene120-82-13.72.0Not Detected3.61,2,4-Trimethylbenzene95-63-60.490.13Not Detected0.391,2-Dibromoethane (EDB)106-93-40.770.19Not Detected0.611,2-Dichlorobenzene95-50-10.600.12Not Detected0.481,2-Dichloroethane107-06-20.400.098Not Detected0.321,2-Dichloropropane78-87-50.460.15Not Detected0.371,3,5-Trimethylbenzene108-67-80.490.12Not Detected0.391,3-Butadiene106-99-00.220.093Not Detected0.181,3-Dichlorobenzene541-73-10.600.13Not Detected0.481,4-Dichlorobenzene106-46-70.600.098Not Detected0.481,4-Dioxane123-91-10.360.10Not Detected0.292-Butanone (Methyl Ethyl Ketone)78-93-31.50.15Not Detected1.42-Hexanone591-78-62.00.46Not Detected2.02-Propanol67-63-04.90.381.2 J1.24-Ethyltoluene622-96-80.490.14Not Detected0.394-Methyl-2-pentanone108-10-10.410.081Not Detected0.33Acetone67-64-14.81.1Not Detected1.1alpha-Chlorotoluene100-44-70.520.12Not Detected0.41Benzene71-43-20.320.047Not Detected0.26Page 26 of 49
Dilution Factor:Instrument/Filename:1/18/24 01:18 PM1.00msdv.i / v011808cMODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-08ANA - Not ApplicableNA - Not ApplicableNorth Hills - Building WLab BlankDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Bromodichloromethane75-27-40.670.14Not Detected0.54Bromoform75-25-21.00.19Not Detected0.83Bromomethane74-83-9191.1Not Detected1.9Carbon Disulfide75-15-01.61.5Not Detected1.5Carbon Tetrachloride56-23-50.630.13Not Detected0.50Chlorobenzene108-90-70.460.13Not Detected0.37Chloroethane75-00-31.30.36Not Detected1.3Chloroform67-66-30.490.10Not Detected0.39Chloromethane74-87-31.00.32Not Detected0.99cis-1,2-Dichloroethene156-59-20.400.20Not Detected0.32cis-1,3-Dichloropropene10061-01-50.450.081Not Detected0.36Cyclohexane110-82-71.70.34Not Detected1.6Dibromochloromethane124-48-10.850.14Not Detected0.68Ethanol64-17-53.80.40Not Detected0.90Ethyl Acetate141-78-61.80.50Not DetectedDEthyl Benzene100-41-40.430.10Not Detected0.35Freon 1175-69-40.560.088Not Detected0.45Freon 11376-13-10.770.15Not Detected0.61Freon 11476-14-20.700.16Not Detected0.56Freon 1275-71-82.50.34Not Detected2.4Heptane142-82-52.00.31Not Detected2.0Hexachlorobutadiene87-68-35.31.2Not Detected5.1Hexane110-54-31.80.42Not Detected1.7m,p-Xylene108-38-30.430.18Not Detected0.35Page 27 of 49
Dilution Factor:Instrument/Filename:1/18/24 01:18 PM1.00msdv.i / v011808cMODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-08ANA - Not ApplicableNA - Not ApplicableNorth Hills - Building WLab BlankDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Methyl tert-butyl ether1634-04-40.360.11Not Detected0.29Methylene Chloride75-09-20.690.15Not Detected0.28Naphthalene91-20-31.00.31Not Detected0.63o-Xylene95-47-60.430.13Not Detected0.35Propylene115-07-11.70.18Not Detected0.83Styrene100-42-50.420.12Not Detected0.34Tetrachloroethene127-18-40.680.16Not Detected0.54Tetrahydrofuran109-99-91.51.4Not Detected1.4Toluene108-88-30.380.066Not Detected0.30trans-1,2-Dichloroethene156-60-50.400.15Not Detected0.32trans-1,3-Dichloropropene10061-02-60.450.13Not Detected0.36Trichloroethene79-01-60.540.063Not Detected0.43Vinyl Acetate108-05-41.80.39Not Detected1.7Vinyl Chloride75-01-40.260.060Not Detected0.20J = Estimated value.D: Analyte not within the DoD scope of accreditation.CAS#SurrogatesLimits%Recovery1,2-Dichloroethane-d417060-07-070-1301064-Bromofluorobenzene460-00-470-130113Toluene-d82037-26-570-130108Page 28 of 49
Dilution Factor:Instrument/Filename:1/19/24 03:23 PM1.00msdv.i / v011910aMODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-08BNA - Not ApplicableNA - Not ApplicableNorth Hills - Building WLab BlankDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)1,1,1-Trichloroethane71-55-60.540.11Not Detected0.441,1,2,2-Tetrachloroethane79-34-50.690.18Not Detected0.551,1,2-Trichloroethane79-00-50.540.17Not Detected0.441,1-Dichloroethane75-34-30.400.086Not Detected0.321,1-Dichloroethene75-35-40.400.098Not Detected0.321,2,4-Trichlorobenzene120-82-13.72.0Not Detected3.61,2,4-Trimethylbenzene95-63-60.490.13Not Detected0.391,2-Dibromoethane (EDB)106-93-40.770.19Not Detected0.611,2-Dichlorobenzene95-50-10.600.12Not Detected0.481,2-Dichloroethane107-06-20.400.098Not Detected0.321,2-Dichloropropane78-87-50.460.15Not Detected0.371,3,5-Trimethylbenzene108-67-80.490.12Not Detected0.391,3-Butadiene106-99-00.220.093Not Detected0.181,3-Dichlorobenzene541-73-10.600.13Not Detected0.481,4-Dichlorobenzene106-46-70.600.098Not Detected0.481,4-Dioxane123-91-10.360.100.16 J0.292-Butanone (Methyl Ethyl Ketone)78-93-31.50.15Not Detected1.42-Hexanone591-78-62.00.46Not Detected2.02-Propanol67-63-04.90.381.1 J1.24-Ethyltoluene622-96-80.490.14Not Detected0.394-Methyl-2-pentanone108-10-10.410.081Not Detected0.33Acetone67-64-14.81.1Not Detected1.1alpha-Chlorotoluene100-44-70.520.12Not Detected0.41Benzene71-43-20.320.047Not Detected0.26Page 29 of 49
Dilution Factor:Instrument/Filename:1/19/24 03:23 PM1.00msdv.i / v011910aMODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-08BNA - Not ApplicableNA - Not ApplicableNorth Hills - Building WLab BlankDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Bromodichloromethane75-27-40.670.14Not Detected0.54Bromoform75-25-21.00.19Not Detected0.83Bromomethane74-83-9191.1Not Detected1.9Carbon Disulfide75-15-01.61.5Not Detected1.5Carbon Tetrachloride56-23-50.630.13Not Detected0.50Chlorobenzene108-90-70.460.13Not Detected0.37Chloroethane75-00-31.30.36Not Detected1.3Chloroform67-66-30.490.10Not Detected0.39Chloromethane74-87-31.00.32Not Detected0.99cis-1,2-Dichloroethene156-59-20.400.20Not Detected0.32cis-1,3-Dichloropropene10061-01-50.450.081Not Detected0.36Cyclohexane110-82-71.70.34Not Detected1.6Dibromochloromethane124-48-10.850.14Not Detected0.68Ethanol64-17-53.80.40Not Detected0.90Ethyl Acetate141-78-61.80.50Not DetectedDEthyl Benzene100-41-40.430.10Not Detected0.35Freon 1175-69-40.560.088Not Detected0.45Freon 11376-13-10.770.15Not Detected0.61Freon 11476-14-20.700.16Not Detected0.56Freon 1275-71-82.50.34Not Detected2.4Heptane142-82-52.00.31Not Detected2.0Hexachlorobutadiene87-68-35.31.2Not Detected5.1Hexane110-54-31.80.42Not Detected1.7m,p-Xylene108-38-30.430.18Not Detected0.35Page 30 of 49
Dilution Factor:Instrument/Filename:1/19/24 03:23 PM1.00msdv.i / v011910aMODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-08BNA - Not ApplicableNA - Not ApplicableNorth Hills - Building WLab BlankDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Methyl tert-butyl ether1634-04-40.360.11Not Detected0.29Methylene Chloride75-09-20.690.15Not Detected0.28Naphthalene91-20-31.00.31Not Detected0.63o-Xylene95-47-60.430.13Not Detected0.35Propylene115-07-11.70.18Not Detected0.83Styrene100-42-50.420.12Not Detected0.34Tetrachloroethene127-18-40.680.16Not Detected0.54Tetrahydrofuran109-99-91.51.4Not Detected1.4Toluene108-88-30.380.066Not Detected0.30trans-1,2-Dichloroethene156-60-50.400.15Not Detected0.32trans-1,3-Dichloropropene10061-02-60.450.13Not Detected0.36Trichloroethene79-01-60.540.063Not Detected0.43Vinyl Acetate108-05-41.80.39Not Detected1.7Vinyl Chloride75-01-40.260.060Not Detected0.20J = Estimated value.D: Analyte not within the DoD scope of accreditation.CAS#SurrogatesLimits%Recovery1,2-Dichloroethane-d417060-07-070-130944-Bromofluorobenzene460-00-470-130118Toluene-d82037-26-570-130107Page 31 of 49
Dilution Factor:Instrument/Filename:1/18/24 07:56 AM1.00msdv.i / v011802MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-09ANA - Not ApplicableNA - Not ApplicableNorth Hills - Building WCCVDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:CAS#Compound%Recovery1,1,1-Trichloroethane71-55-6811,1,2,2-Tetrachloroethane79-34-5881,1,2-Trichloroethane79-00-5881,1-Dichloroethane75-34-3881,1-Dichloroethene75-35-4801,2,4-Trichlorobenzene120-82-11111,2,4-Trimethylbenzene95-63-6951,2-Dibromoethane (EDB)106-93-4921,2-Dichlorobenzene95-50-11001,2-Dichloroethane107-06-21001,2-Dichloropropane78-87-51021,3,5-Trimethylbenzene108-67-8901,3-Butadiene106-99-0791,3-Dichlorobenzene541-73-1961,4-Dichlorobenzene106-46-7971,4-Dioxane123-91-11122-Butanone (Methyl Ethyl Ketone)78-93-3842-Hexanone591-78-61042-Propanol67-63-0744-Ethyltoluene622-96-8914-Methyl-2-pentanone108-10-1108Acetone67-64-173alpha-Chlorotoluene100-44-799Benzene71-43-298Page 32 of 49
Dilution Factor:Instrument/Filename:1/18/24 07:56 AM1.00msdv.i / v011802MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-09ANA - Not ApplicableNA - Not ApplicableNorth Hills - Building WCCVDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:CAS#Compound%RecoveryBromodichloromethane75-27-495Bromoform75-25-293Bromomethane74-83-981Carbon Disulfide75-15-083Carbon Tetrachloride56-23-585Chlorobenzene108-90-785Chloroethane75-00-378Chloroform67-66-382Chloromethane74-87-390cis-1,2-Dichloroethene156-59-283cis-1,3-Dichloropropene10061-01-595Cyclohexane110-82-778Dibromochloromethane124-48-194Ethanol64-17-583Ethyl Acetate141-78-673Ethyl Benzene100-41-485Freon 1175-69-485Freon 11376-13-180Freon 11476-14-286Freon 1275-71-885Heptane142-82-595Hexachlorobutadiene87-68-3110Hexane110-54-378m,p-Xylene108-38-389Page 33 of 49
Dilution Factor:Instrument/Filename:1/18/24 07:56 AM1.00msdv.i / v011802MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-09ANA - Not ApplicableNA - Not ApplicableNorth Hills - Building WCCVDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:CAS#Compound%RecoveryMethyl tert-butyl ether1634-04-474Methylene Chloride75-09-280Naphthalene91-20-3101o-Xylene95-47-689Propylene115-07-184Styrene100-42-595Tetrachloroethene127-18-487Tetrahydrofuran109-99-984Toluene108-88-393trans-1,2-Dichloroethene156-60-585trans-1,3-Dichloropropene10061-02-688Trichloroethene79-01-691Vinyl Acetate108-05-478Vinyl Chloride75-01-486D: Analyte not within the DoD scope of accreditation.CAS#SurrogatesLimits%Recovery1,2-Dichloroethane-d417060-07-070-130964-Bromofluorobenzene460-00-470-130102Toluene-d82037-26-570-130109Page 34 of 49
Dilution Factor:Instrument/Filename:1/19/24 11:12 AM1.00msdv.i / v011906MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-09BNA - Not ApplicableNA - Not ApplicableNorth Hills - Building WCCVDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:CAS#Compound%Recovery1,1,1-Trichloroethane71-55-6821,1,2,2-Tetrachloroethane79-34-5811,1,2-Trichloroethane79-00-5841,1-Dichloroethane75-34-3861,1-Dichloroethene75-35-4831,2,4-Trichlorobenzene120-82-11081,2,4-Trimethylbenzene95-63-6901,2-Dibromoethane (EDB)106-93-4841,2-Dichlorobenzene95-50-1911,2-Dichloroethane107-06-2841,2-Dichloropropane78-87-5931,3,5-Trimethylbenzene108-67-8821,3-Butadiene106-99-0821,3-Dichlorobenzene541-73-1871,4-Dichlorobenzene106-46-7881,4-Dioxane123-91-11122-Butanone (Methyl Ethyl Ketone)78-93-3892-Hexanone591-78-6982-Propanol67-63-0834-Ethyltoluene622-96-8874-Methyl-2-pentanone108-10-1103Acetone67-64-173alpha-Chlorotoluene100-44-795Benzene71-43-294Page 35 of 49
Dilution Factor:Instrument/Filename:1/19/24 11:12 AM1.00msdv.i / v011906MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-09BNA - Not ApplicableNA - Not ApplicableNorth Hills - Building WCCVDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:CAS#Compound%RecoveryBromodichloromethane75-27-489Bromoform75-25-290Bromomethane74-83-970Carbon Disulfide75-15-087Carbon Tetrachloride56-23-586Chlorobenzene108-90-783Chloroethane75-00-380Chloroform67-66-383Chloromethane74-87-390cis-1,2-Dichloroethene156-59-284cis-1,3-Dichloropropene10061-01-593Cyclohexane110-82-784Dibromochloromethane124-48-189Ethanol64-17-593Ethyl Acetate141-78-683Ethyl Benzene100-41-480Freon 1175-69-488Freon 11376-13-183Freon 11476-14-288Freon 1275-71-887Heptane142-82-588Hexachlorobutadiene87-68-3115Hexane110-54-381m,p-Xylene108-38-386Page 36 of 49
Dilution Factor:Instrument/Filename:1/19/24 11:12 AM1.00msdv.i / v011906MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-09BNA - Not ApplicableNA - Not ApplicableNorth Hills - Building WCCVDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:CAS#Compound%RecoveryMethyl tert-butyl ether1634-04-483Methylene Chloride75-09-286Naphthalene91-20-3103o-Xylene95-47-686Propylene115-07-199Styrene100-42-592Tetrachloroethene127-18-484Tetrahydrofuran109-99-989Toluene108-88-385trans-1,2-Dichloroethene156-60-587trans-1,3-Dichloropropene10061-02-686Trichloroethene79-01-684Vinyl Acetate108-05-483Vinyl Chloride75-01-489D: Analyte not within the DoD scope of accreditation.CAS#SurrogatesLimits%Recovery1,2-Dichloroethane-d417060-07-070-130914-Bromofluorobenzene460-00-470-130100Toluene-d82037-26-570-130106Page 37 of 49
Dilution Factor:Instrument/Filename:1/18/24 10:30 AM1.00msdv.i / v011805MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-10ANA - Not ApplicableNA - Not ApplicableNorth Hills - Building WLCSDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:CAS#Compound%Recovery1,1,1-Trichloroethane71-55-6781,1,2,2-Tetrachloroethane79-34-5741,1,2-Trichloroethane79-00-5821,1-Dichloroethane75-34-3831,1-Dichloroethene75-35-4731,2,4-Trichlorobenzene120-82-1891,2,4-Trimethylbenzene95-63-6811,2-Dibromoethane (EDB)106-93-4841,2-Dichlorobenzene95-50-1841,2-Dichloroethane107-06-2921,2-Dichloropropane78-87-5901,3,5-Trimethylbenzene108-67-8781,3-Butadiene106-99-0771,3-Dichlorobenzene541-73-1811,4-Dichlorobenzene106-46-7821,4-Dioxane123-91-1952-Butanone (Methyl Ethyl Ketone)78-93-3762-Hexanone591-78-6822-Propanol67-63-0804-Ethyltoluene622-96-8764-Methyl-2-pentanone108-10-192Acetone67-64-169 Qalpha-Chlorotoluene100-44-782Benzene71-43-289Page 38 of 49* % Recovery is calculated using unrounded analytical results.
Dilution Factor:Instrument/Filename:1/18/24 10:30 AM1.00msdv.i / v011805MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-10ANA - Not ApplicableNA - Not ApplicableNorth Hills - Building WLCSDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:CAS#Compound%RecoveryBromodichloromethane75-27-485Bromoform75-25-282Bromomethane74-83-972Carbon Disulfide75-15-080Carbon Tetrachloride56-23-574Chlorobenzene108-90-778Chloroethane75-00-373Chloroform67-66-377Chloromethane74-87-384cis-1,2-Dichloroethene156-59-278cis-1,3-Dichloropropene10061-01-588Cyclohexane110-82-776Dibromochloromethane124-48-184Ethanol64-17-597Ethyl Acetate141-78-668 QEthyl Benzene100-41-478Freon 1175-69-482Freon 11376-13-175Freon 11476-14-282Freon 1275-71-882Heptane142-82-588Hexachlorobutadiene87-68-397Hexane110-54-375m,p-Xylene108-38-380Page 39 of 49* % Recovery is calculated using unrounded analytical results.
Dilution Factor:Instrument/Filename:1/18/24 10:30 AM1.00msdv.i / v011805MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-10ANA - Not ApplicableNA - Not ApplicableNorth Hills - Building WLCSDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:CAS#Compound%RecoveryMethyl tert-butyl ether1634-04-471Methylene Chloride75-09-276Naphthalene91-20-383o-Xylene95-47-681Propylene115-07-182Styrene100-42-582Tetrachloroethene127-18-479Tetrahydrofuran109-99-983Toluene108-88-384trans-1,2-Dichloroethene156-60-578trans-1,3-Dichloropropene10061-02-682Trichloroethene79-01-683Vinyl Acetate108-05-4109Vinyl Chloride75-01-483Q = Exceeds Quality Control limits.D: Analyte not within the DoD scope of accreditation.CAS#SurrogatesLimits%Recovery1,2-Dichloroethane-d417060-07-070-130954-Bromofluorobenzene460-00-470-130100Toluene-d82037-26-570-130106Page 40 of 49* % Recovery is calculated using unrounded analytical results.
Dilution Factor:Instrument/Filename:1/18/24 11:10 AM1.00msdv.i / v011806MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-10AANA - Not ApplicableNA - Not ApplicableNorth Hills - Building WLCSDDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:CAS#Compound%Recovery1,1,1-Trichloroethane71-55-6751,1,2,2-Tetrachloroethane79-34-5761,1,2-Trichloroethane79-00-5801,1-Dichloroethane75-34-3811,1-Dichloroethene75-35-4721,2,4-Trichlorobenzene120-82-1851,2,4-Trimethylbenzene95-63-6821,2-Dibromoethane (EDB)106-93-4831,2-Dichlorobenzene95-50-1841,2-Dichloroethane107-06-2891,2-Dichloropropane78-87-5881,3,5-Trimethylbenzene108-67-8771,3-Butadiene106-99-0761,3-Dichlorobenzene541-73-1811,4-Dichlorobenzene106-46-7811,4-Dioxane123-91-1932-Butanone (Methyl Ethyl Ketone)78-93-3762-Hexanone591-78-6822-Propanol67-63-0764-Ethyltoluene622-96-8784-Methyl-2-pentanone108-10-191Acetone67-64-168 Qalpha-Chlorotoluene100-44-781Benzene71-43-287Page 41 of 49* % Recovery is calculated using unrounded analytical results.
Dilution Factor:Instrument/Filename:1/18/24 11:10 AM1.00msdv.i / v011806MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-10AANA - Not ApplicableNA - Not ApplicableNorth Hills - Building WLCSDDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:CAS#Compound%RecoveryBromodichloromethane75-27-485Bromoform75-25-283Bromomethane74-83-972Carbon Disulfide75-15-079Carbon Tetrachloride56-23-572Chlorobenzene108-90-777Chloroethane75-00-374Chloroform67-66-375Chloromethane74-87-383cis-1,2-Dichloroethene156-59-277cis-1,3-Dichloropropene10061-01-586Cyclohexane110-82-775Dibromochloromethane124-48-183Ethanol64-17-593Ethyl Acetate141-78-671Ethyl Benzene100-41-476Freon 1175-69-481Freon 11376-13-174Freon 11476-14-280Freon 1275-71-879Heptane142-82-586Hexachlorobutadiene87-68-394Hexane110-54-374m,p-Xylene108-38-380Page 42 of 49* % Recovery is calculated using unrounded analytical results.
Dilution Factor:Instrument/Filename:1/18/24 11:10 AM1.00msdv.i / v011806MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-10AANA - Not ApplicableNA - Not ApplicableNorth Hills - Building WLCSDDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:CAS#Compound%RecoveryMethyl tert-butyl ether1634-04-471Methylene Chloride75-09-274Naphthalene91-20-377o-Xylene95-47-682Propylene115-07-181Styrene100-42-582Tetrachloroethene127-18-480Tetrahydrofuran109-99-980Toluene108-88-380trans-1,2-Dichloroethene156-60-578trans-1,3-Dichloropropene10061-02-681Trichloroethene79-01-680Vinyl Acetate108-05-4108Vinyl Chloride75-01-483Q = Exceeds Quality Control limits.D: Analyte not within the DoD scope of accreditation.CAS#SurrogatesLimits%Recovery1,2-Dichloroethane-d417060-07-070-130954-Bromofluorobenzene460-00-470-130102Toluene-d82037-26-570-130105Page 43 of 49* % Recovery is calculated using unrounded analytical results.
Dilution Factor:Instrument/Filename:1/19/24 12:32 PM1.00msdv.i / v011907MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-10BNA - Not ApplicableNA - Not ApplicableNorth Hills - Building WLCSDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:CAS#Compound%Recovery1,1,1-Trichloroethane71-55-6801,1,2,2-Tetrachloroethane79-34-5761,1,2-Trichloroethane79-00-5821,1-Dichloroethane75-34-3851,1-Dichloroethene75-35-4821,2,4-Trichlorobenzene120-82-1861,2,4-Trimethylbenzene95-63-6841,2-Dibromoethane (EDB)106-93-4841,2-Dichlorobenzene95-50-1821,2-Dichloroethane107-06-2881,2-Dichloropropane78-87-5931,3,5-Trimethylbenzene108-67-8791,3-Butadiene106-99-0821,3-Dichlorobenzene541-73-1791,4-Dichlorobenzene106-46-7801,4-Dioxane123-91-11042-Butanone (Methyl Ethyl Ketone)78-93-3842-Hexanone591-78-6802-Propanol67-63-0864-Ethyltoluene622-96-8784-Methyl-2-pentanone108-10-196Acetone67-64-172alpha-Chlorotoluene100-44-782Benzene71-43-296Page 44 of 49* % Recovery is calculated using unrounded analytical results.
Dilution Factor:Instrument/Filename:1/19/24 12:32 PM1.00msdv.i / v011907MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-10BNA - Not ApplicableNA - Not ApplicableNorth Hills - Building WLCSDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:CAS#Compound%RecoveryBromodichloromethane75-27-489Bromoform75-25-284Bromomethane74-83-984Carbon Disulfide75-15-091Carbon Tetrachloride56-23-570Chlorobenzene108-90-780Chloroethane75-00-382Chloroform67-66-381Chloromethane74-87-386cis-1,2-Dichloroethene156-59-283cis-1,3-Dichloropropene10061-01-594Cyclohexane110-82-784Dibromochloromethane124-48-187Ethanol64-17-5116Ethyl Acetate141-78-681Ethyl Benzene100-41-479Freon 1175-69-488Freon 11376-13-179Freon 11476-14-287Freon 1275-71-885Heptane142-82-590Hexachlorobutadiene87-68-3102Hexane110-54-378m,p-Xylene108-38-384Page 45 of 49* % Recovery is calculated using unrounded analytical results.
Dilution Factor:Instrument/Filename:1/19/24 12:32 PM1.00msdv.i / v011907MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-10BNA - Not ApplicableNA - Not ApplicableNorth Hills - Building WLCSDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:CAS#Compound%RecoveryMethyl tert-butyl ether1634-04-482Methylene Chloride75-09-284Naphthalene91-20-378o-Xylene95-47-685Propylene115-07-195Styrene100-42-586Tetrachloroethene127-18-484Tetrahydrofuran109-99-992Toluene108-88-385trans-1,2-Dichloroethene156-60-585trans-1,3-Dichloropropene10061-02-687Trichloroethene79-01-688Vinyl Acetate108-05-4120Vinyl Chloride75-01-488D: Analyte not within the DoD scope of accreditation.CAS#SurrogatesLimits%Recovery1,2-Dichloroethane-d417060-07-070-130854-Bromofluorobenzene460-00-470-130102Toluene-d82037-26-570-130106Page 46 of 49* % Recovery is calculated using unrounded analytical results.
Dilution Factor:Instrument/Filename:1/19/24 01:23 PM1.00msdv.i / v011908MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-10BBNA - Not ApplicableNA - Not ApplicableNorth Hills - Building WLCSDDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:CAS#Compound%Recovery1,1,1-Trichloroethane71-55-6751,1,2,2-Tetrachloroethane79-34-5741,1,2-Trichloroethane79-00-5781,1-Dichloroethane75-34-3801,1-Dichloroethene75-35-4781,2,4-Trichlorobenzene120-82-1831,2,4-Trimethylbenzene95-63-6821,2-Dibromoethane (EDB)106-93-4801,2-Dichlorobenzene95-50-1801,2-Dichloroethane107-06-2821,2-Dichloropropane78-87-5861,3,5-Trimethylbenzene108-67-8761,3-Butadiene106-99-0771,3-Dichlorobenzene541-73-1781,4-Dichlorobenzene106-46-7781,4-Dioxane123-91-1962-Butanone (Methyl Ethyl Ketone)78-93-3802-Hexanone591-78-6772-Propanol67-63-0814-Ethyltoluene622-96-8784-Methyl-2-pentanone108-10-190Acetone67-64-167 Qalpha-Chlorotoluene100-44-780Benzene71-43-290Page 47 of 49* % Recovery is calculated using unrounded analytical results.
Dilution Factor:Instrument/Filename:1/19/24 01:23 PM1.00msdv.i / v011908MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-10BBNA - Not ApplicableNA - Not ApplicableNorth Hills - Building WLCSDDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:CAS#Compound%RecoveryBromodichloromethane75-27-482Bromoform75-25-279Bromomethane74-83-980Carbon Disulfide75-15-086Carbon Tetrachloride56-23-566 QChlorobenzene108-90-778Chloroethane75-00-377Chloroform67-66-377Chloromethane74-87-391cis-1,2-Dichloroethene156-59-279cis-1,3-Dichloropropene10061-01-588Cyclohexane110-82-780Dibromochloromethane124-48-181Ethanol64-17-5108Ethyl Acetate141-78-677Ethyl Benzene100-41-477Freon 1175-69-483Freon 11376-13-176Freon 11476-14-282Freon 1275-71-881Heptane142-82-585Hexachlorobutadiene87-68-3101Hexane110-54-377m,p-Xylene108-38-379Page 48 of 49* % Recovery is calculated using unrounded analytical results.
Dilution Factor:Instrument/Filename:1/19/24 01:23 PM1.00msdv.i / v011908MODIFIED EPA METHOD TO-15 GC/MS FULL SCAN2401288-10BBNA - Not ApplicableNA - Not ApplicableNorth Hills - Building WLCSDDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:CAS#Compound%RecoveryMethyl tert-butyl ether1634-04-478Methylene Chloride75-09-279Naphthalene91-20-375o-Xylene95-47-680Propylene115-07-190Styrene100-42-583Tetrachloroethene127-18-478Tetrahydrofuran109-99-987Toluene108-88-380trans-1,2-Dichloroethene156-60-581trans-1,3-Dichloropropene10061-02-681Trichloroethene79-01-681Vinyl Acetate108-05-4110Vinyl Chloride75-01-485Q = Exceeds Quality Control limits.D: Analyte not within the DoD scope of accreditation.CAS#SurrogatesLimits%Recovery1,2-Dichloroethane-d417060-07-070-130904-Bromofluorobenzene460-00-470-130100Toluene-d82037-26-570-130108Page 49 of 49* % Recovery is calculated using unrounded analytical results.

APPENDIX E

LABORATORY ANALYTICAL REPORTS AND CHAIN-OF-CUSTODY RECORDS FOR SUB-SLAB SOIL GAS SAMPLES
2/8/2024
Nolen Barefoot
Mid-Atlantic Associates, Inc.
409 Rogers View Court
Raleigh NC 27610
Project Name: North Hills
Project #:
Dear Nolen Barefoot
The following report includes the data for the above referenced project for sample(s)
received on 1/22/2024 at Eurofins Air Toxics LLC.
The data and associated QC analyzed by TO-15 are compliant with the project
requirements or laboratory criteria with the exception of the deviations noted in the
attached case narrative.
Thank you for choosing Eurofins Air Toxics LLC. for your air analysis needs. Eurofins Air
Toxics Inc. is committed to providing accurate data of the highest quality. Please feel free
to contact the Project Manager: Brian Whittaker at 916-985-1000 if you have any
questions regarding the data in this report.
Regards,
Brian Whittaker
Project Manager
Workorder #: 2401465R2
Page 1 of 33
Nolen Barefoot
Mid-Atlantic Associates, Inc.
409 Rogers View Court
Raleigh, NC 27610
WORK ORDER #: 2401465R2
CLIENT:BILL TO:
PHONE:
Nolen Barefoot
Mid-Atlantic Associates, Inc.
409 Rogers View Court
Raleigh, NC 27610
919-250-9918
01/22/2024
DATE COMPLETED:01/29/2024
P.O. #
PROJECT #North Hills
Work Order Summary
FAX:
DATE RECEIVED:
DATE REISSUED:02/07/2024
CONTACT:Brian Whittaker
NAMEFRACTION #TEST VAC./PRES.
RECEIPT
PRESSURE
FINAL
01A MP-1 TO-15 6.1 "Hg 9.8 psi
02A MP-19 TO-15 5.9 "Hg 9.8 psi
03A MP-20 TO-15 5.5 "Hg 9.8 psi
04A MP-21 TO-15 5.5 "Hg 9.8 psi
05A MP-22 TO-15 5.9 "Hg 10 psi
06A Duplicate TO-15 5.9 "Hg 9.8 psi
07A Lab Blank TO-15 NA NA
08A CCV TO-15 NA NA
09A LCS TO-15 NA NA
09AA LCSD TO-15 NA NA
CERTIFIED BY:
Technical Director
DATE: 02/08/24
Page 2 of 33
Certification numbers: AZ Licensure AZ0775, FL NELAP – E87680, LA NELAP – 02089, NH NELAP – 209222, NJ NELAP - CA016,
NY NELAP - 11291, TX NELAP – T104704434-22-18, UT NELAP – CA009332022-14, VA NELAP - 12240, WA ELAP - C935
Name of Accreditation Body: NELAP/ORELAP (Oregon Environmental Laboratory Accreditation Program) CA300005-017
Eurofins Environment Testing Northern California, LLC certifies that the test results contained in this report meet
all requirements of the 2016 TNI Standard.
This report shall not be reproduced, except in full, without the written approval of Eurofins Air Toxics, LLC.
180 BLUE RAVINE ROAD, SUITE B FOLSOM, CA - 95630
[phone]
LABORATORY NARRATIVE
EPA Method TO-15
Mid-Atlantic Associates, Inc.
Workorder# 2401465R2
Six 1 Liter Summa Canister samples were received on January 22, 2024. The laboratory performed
analysis via EPA Method TO-15 using GC/MS in the full scan mode.
The Chain of Custody (COC) was not relinquished properly. A time was not provided by the field
sampler.
The Work Order was reissued on February 1, 2024 to revise sample identifications per the revised COC
provided by the client.
The Work order was reissued on February 7, 2024 to correct sample identifications and canister
assignments due to laboratory transcription error.
Receiving Notes
As per client project requirements, the laboratory has reported estimated values for target compound hits
that are below the Reporting Limit but greater than the Method Detection Limit. Concentrations that are
below the level at which the canister was certified may be false positives.
Dilution was performed on sample MP-1 due to the presence of high level target species.
Analytical Notes
Ten qualifiers may have been used on the data analysis sheets and indicates as follows:
B - Compound present in laboratory blank greater than reporting limit (background subtraction not
performed).
J - Estimated value.
E - Exceeds instrument calibration range.
S - Saturated peak.
Q - Exceeds quality control limits.
U - Compound analyzed for but not detected above the reporting limit, LOD, or MDL value. See
data page for project specific U-flag definition.
UJ- Non-detected compound associated with low bias in the CCV
N - The identification is based on presumptive evidence.
M - Reported value may be biased due to apparent matrix interferences.
CN - See Case Narrative.
File extensions may have been used on the data analysis sheets and indicates
as follows:
a-File was requantified
b-File was quantified by a second column and detector
r1-File was requantified for the purpose of reissue
Definition of Data Qualifying Flags
Page 3 of 33
Dilution Factor:Instrument/Filename:1/27/24 02:38 AM3.35msdp.i / p012626r2EPA METHOD TO-15 GC/MS FULL SCAN2401465R2-01A1/18/24 12:13 PM1 Liter Summa CanisterNorth HillsMP-1Date/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)1,1,1-Trichloroethane71-55-69.12.2Not Detected8.21,1,2,2-Tetrachloroethane79-34-5114.0Not Detected101,1,2-Trichloroethane79-00-59.13.0Not Detected8.21,1-Dichloroethane75-34-36.81.5Not Detected6.11,1-Dichloroethene75-35-46.63.4Not Detected6.01,2,4-Trichlorobenzene120-82-1509.2Not Detected371,2,4-Trimethylbenzene95-63-68.22.2Not Detected7.41,2-Dibromoethane (EDB)106-93-4134.2Not Detected121,2-Dichlorobenzene95-50-1102.7Not Detected9.11,2-Dichloroethane107-06-26.82.3Not Detected6.11,2-Dichloropropane78-87-57.72.1Not Detected7.01,3,5-Trimethylbenzene108-67-88.22.2Not Detected7.41,3-Butadiene106-99-03.72.2Not Detected3.31,3-Dichlorobenzene541-73-1102.4Not Detected9.11,4-Dichlorobenzene106-46-7103.4Not Detected9.11,4-Dioxane123-91-1245.6Not Detected182-Butanone (Methyl Ethyl Ketone)78-93-3203.35.7 J152-Hexanone591-78-6277.7Not Detected202-Propanol67-63-0165.750124-Ethyltoluene622-96-88.21.8Not Detected7.44-Methyl-2-pentanone108-10-16.92.6Not Detected6.2Acetone67-64-140111600 E32alpha-Chlorotoluene100-44-78.72.8Not Detected7.8Benzene71-43-25.41.32.2 J4.8Page 4 of 33
Dilution Factor:Instrument/Filename:1/27/24 02:38 AM3.35msdp.i / p012626r2EPA METHOD TO-15 GC/MS FULL SCAN2401465R2-01A1/18/24 12:13 PM1 Liter Summa CanisterNorth HillsMP-1Date/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Bromodichloromethane75-27-4113.5Not Detected10Bromoform75-25-2176.8Not Detected16Bromomethane74-83-96512Not Detected20Carbon Disulfide75-15-0214.0Not Detected16Carbon Tetrachloride56-23-5103.4Not Detected9.5Chlorobenzene108-90-77.71.6Not Detected6.9Chloroethane75-00-3186.1Not Detected13Chloroform67-66-38.21.95.9 J7.4Chloromethane74-87-3345.9Not Detected10cis-1,2-Dichloroethene156-59-26.61.4Not Detected6.0cis-1,3-Dichloropropene10061-01-57.61.8Not Detected6.8Cyclohexane110-82-75.82.13.1 J5.2Dibromochloromethane124-48-1144.2Not Detected13Ethanol64-17-5321625025Ethyl Acetate141-78-62410Not DetectedDEthyl Benzene100-41-47.31.7Not Detected6.5Freon 1175-69-49.43.04.0 J8.5Freon 11376-13-1132.8Not Detected12Freon 11476-14-2123.3Not Detected10Freon 1275-71-88.34.0Not Detected7.4Heptane142-82-56.92.38.86.2Hexachlorobutadiene87-68-37120Not Detected54Hexane110-54-35.91.85.3 J5.3m,p-Xylene108-38-3141.02.4 J6.5Page 5 of 33
Dilution Factor:Instrument/Filename:1/27/24 02:38 AM3.35msdp.i / p012626r2EPA METHOD TO-15 GC/MS FULL SCAN2401465R2-01A1/18/24 12:13 PM1 Liter Summa CanisterNorth HillsMP-1Date/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Methyl tert-butyl ether1634-04-4244.4Not Detected18Methylene Chloride75-09-2584.9Not Detected17Naphthalene91-20-3181.41.9 J3.5o-Xylene95-47-67.31.7Not Detected6.5Propylene115-07-1123.4Not Detected8.6Styrene100-42-57.11.3Not Detected6.4Tetrachloroethene127-18-4112.92610Tetrahydrofuran109-99-94.93.2Not Detected4.4Toluene108-88-3131.64.9 J5.7trans-1,2-Dichloroethene156-60-56.63.0Not Detected6.0trans-1,3-Dichloropropene10061-02-67.61.2Not Detected6.8Trichloroethene79-01-69.02.7Not Detected8.1Vinyl Acetate108-05-42410Not Detected18Vinyl Chloride75-01-44.33.6Not Detected3.8E = Exceeds instrument calibration range.J = Estimated value.D: Analyte not within the DoD scope of accreditation.CAS#SurrogatesLimits%Recovery1,2-Dichloroethane-d417060-07-070-130894-Bromofluorobenzene460-00-470-130124Toluene-d82037-26-570-130103Page 6 of 33
Dilution Factor:Instrument/Filename:1/27/24 12:32 AM2.07msdp.i / p012622r2EPA METHOD TO-15 GC/MS FULL SCAN2401465R2-02A1/18/24 07:38 AM1 Liter Summa CanisterNorth HillsMP-19Date/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)1,1,1-Trichloroethane71-55-65.61.4Not Detected5.11,1,2,2-Tetrachloroethane79-34-57.12.4Not Detected6.41,1,2-Trichloroethane79-00-55.61.9Not Detected5.11,1-Dichloroethane75-34-34.20.92Not Detected3.81,1-Dichloroethene75-35-44.12.1Not Detected3.71,2,4-Trichlorobenzene120-82-1315.7Not Detected231,2,4-Trimethylbenzene95-63-65.11.4Not Detected4.61,2-Dibromoethane (EDB)106-93-48.02.6Not Detected7.21,2-Dichlorobenzene95-50-16.21.7Not Detected5.61,2-Dichloroethane107-06-24.21.4Not Detected3.81,2-Dichloropropane78-87-54.81.3Not Detected4.31,3,5-Trimethylbenzene108-67-85.11.4Not Detected4.61,3-Butadiene106-99-02.31.3Not Detected2.11,3-Dichlorobenzene541-73-16.21.4Not Detected5.61,4-Dichlorobenzene106-46-76.22.1Not Detected5.61,4-Dioxane123-91-1153.4Not Detected112-Butanone (Methyl Ethyl Ketone)78-93-3122.0Not Detected9.22-Hexanone591-78-6174.8Not Detected132-Propanol67-63-0103.5Not Detected7.64-Ethyltoluene622-96-85.11.1Not Detected4.64-Methyl-2-pentanone108-10-14.21.6Not Detected3.8Acetone67-64-1246.812 J20alpha-Chlorotoluene100-44-75.41.7Not Detected4.8Benzene71-43-23.30.78Not Detected3.0Page 7 of 33
Dilution Factor:Instrument/Filename:1/27/24 12:32 AM2.07msdp.i / p012622r2EPA METHOD TO-15 GC/MS FULL SCAN2401465R2-02A1/18/24 07:38 AM1 Liter Summa CanisterNorth HillsMP-19Date/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Bromodichloromethane75-27-46.92.2Not Detected6.2Bromoform75-25-2114.2Not Detected9.6Bromomethane74-83-9407.1Not Detected12Carbon Disulfide75-15-0132.4Not Detected9.7Carbon Tetrachloride56-23-56.52.1Not Detected5.9Chlorobenzene108-90-74.81.0Not Detected4.3Chloroethane75-00-3113.8Not Detected8.2Chloroform67-66-35.01.24.9 J4.5Chloromethane74-87-3213.6Not Detected6.4cis-1,2-Dichloroethene156-59-24.10.89Not Detected3.7cis-1,3-Dichloropropene10061-01-54.71.1Not Detected4.2Cyclohexane110-82-73.61.3Not Detected3.2Dibromochloromethane124-48-18.82.6Not Detected7.9Ethanol64-17-5209.7Not Detected16Ethyl Acetate141-78-6156.3Not DetectedDEthyl Benzene100-41-44.51.1Not Detected4.0Freon 1175-69-45.81.9Not Detected5.2Freon 11376-13-17.91.7Not Detected7.1Freon 11476-14-27.22.0Not Detected6.5Freon 1275-71-85.12.4Not Detected4.6Heptane142-82-54.21.4Not Detected3.8Hexachlorobutadiene87-68-34412Not Detected33Hexane110-54-33.61.1Not Detected3.3m,p-Xylene108-38-39.00.640.78 J4.0Page 8 of 33
Dilution Factor:Instrument/Filename:1/27/24 12:32 AM2.07msdp.i / p012622r2EPA METHOD TO-15 GC/MS FULL SCAN2401465R2-02A1/18/24 07:38 AM1 Liter Summa CanisterNorth HillsMP-19Date/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Methyl tert-butyl ether1634-04-4152.7Not Detected11Methylene Chloride75-09-2363.0Not Detected11Naphthalene91-20-3110.86Not Detected2.2o-Xylene95-47-64.51.1Not Detected4.0Propylene115-07-17.12.1Not Detected5.3Styrene100-42-54.40.78Not Detected4.0Tetrachloroethene127-18-47.01.83.6 J6.3Tetrahydrofuran109-99-93.02.0Not Detected2.7Toluene108-88-37.80.983.8 J3.5trans-1,2-Dichloroethene156-60-54.11.9Not Detected3.7trans-1,3-Dichloropropene10061-02-64.70.72Not Detected4.2Trichloroethene79-01-65.61.74.5 J5.0Vinyl Acetate108-05-4146.3Not Detected11Vinyl Chloride75-01-42.62.2Not Detected2.4J = Estimated value.D: Analyte not within the DoD scope of accreditation.CAS#SurrogatesLimits%Recovery1,2-Dichloroethane-d417060-07-070-130904-Bromofluorobenzene460-00-470-130108Toluene-d82037-26-570-130104Page 9 of 33
Dilution Factor:Instrument/Filename:1/27/24 01:04 AM2.04msdp.i / p012623r2EPA METHOD TO-15 GC/MS FULL SCAN2401465R2-03A1/18/24 08:30 AM1 Liter Summa CanisterNorth HillsMP-20Date/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)1,1,1-Trichloroethane71-55-65.61.4Not Detected5.01,1,2,2-Tetrachloroethane79-34-57.02.4Not Detected6.31,1,2-Trichloroethane79-00-55.61.8Not Detected5.01,1-Dichloroethane75-34-34.10.90Not Detected3.71,1-Dichloroethene75-35-44.02.1Not Detected3.61,2,4-Trichlorobenzene120-82-1305.6Not Detected231,2,4-Trimethylbenzene95-63-65.01.4Not Detected4.51,2-Dibromoethane (EDB)106-93-47.82.6Not Detected7.01,2-Dichlorobenzene95-50-16.11.6Not Detected5.51,2-Dichloroethane107-06-24.11.4Not Detected3.71,2-Dichloropropane78-87-54.71.3Not Detected4.21,3,5-Trimethylbenzene108-67-85.01.3Not Detected4.51,3-Butadiene106-99-02.21.3Not Detected2.01,3-Dichlorobenzene541-73-16.11.4Not Detected5.51,4-Dichlorobenzene106-46-76.12.1Not Detected5.51,4-Dioxane123-91-1153.4Not Detected112-Butanone (Methyl Ethyl Ketone)78-93-3122.0Not Detected9.02-Hexanone591-78-6174.7Not Detected122-Propanol67-63-0103.4Not Detected7.54-Ethyltoluene622-96-85.01.1Not Detected4.54-Methyl-2-pentanone108-10-14.21.6Not Detected3.8Acetone67-64-1246.78.3 J19alpha-Chlorotoluene100-44-75.31.7Not Detected4.8Benzene71-43-23.20.77Not Detected2.9Page 10 of 33
Dilution Factor:Instrument/Filename:1/27/24 01:04 AM2.04msdp.i / p012623r2EPA METHOD TO-15 GC/MS FULL SCAN2401465R2-03A1/18/24 08:30 AM1 Liter Summa CanisterNorth HillsMP-20Date/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Bromodichloromethane75-27-46.82.1Not Detected6.2Bromoform75-25-2104.2Not Detected9.5Bromomethane74-83-9407.0Not Detected12Carbon Disulfide75-15-0132.4Not Detected9.5Carbon Tetrachloride56-23-56.42.0Not Detected5.8Chlorobenzene108-90-74.70.99Not Detected4.2Chloroethane75-00-3113.7Not Detected8.1Chloroform67-66-35.01.1Not Detected4.5Chloromethane74-87-3213.6Not Detected6.3cis-1,2-Dichloroethene156-59-24.00.88Not Detected3.6cis-1,3-Dichloropropene10061-01-54.61.1Not Detected4.2Cyclohexane110-82-73.51.3Not Detected3.2Dibromochloromethane124-48-18.72.6Not Detected7.8Ethanol64-17-5199.5Not Detected15Ethyl Acetate141-78-6156.2Not DetectedDEthyl Benzene100-41-44.41.0Not Detected4.0Freon 1175-69-45.71.8135.2Freon 11376-13-17.81.7Not Detected7.0Freon 11476-14-27.12.0Not Detected6.4Freon 1275-71-85.02.4Not Detected4.5Heptane142-82-54.21.4Not Detected3.8Hexachlorobutadiene87-68-34412Not Detected33Hexane110-54-33.61.1Not Detected3.2m,p-Xylene108-38-38.80.64Not Detected4.0Page 11 of 33
Dilution Factor:Instrument/Filename:1/27/24 01:04 AM2.04msdp.i / p012623r2EPA METHOD TO-15 GC/MS FULL SCAN2401465R2-03A1/18/24 08:30 AM1 Liter Summa CanisterNorth HillsMP-20Date/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Methyl tert-butyl ether1634-04-4152.7Not Detected11Methylene Chloride75-09-2353.0Not Detected11Naphthalene91-20-3110.85Not Detected2.1o-Xylene95-47-64.41.1Not Detected4.0Propylene115-07-17.02.1Not Detected5.3Styrene100-42-54.30.77Not Detected3.9Tetrachloroethene127-18-46.91.87.46.2Tetrahydrofuran109-99-93.01.9Not Detected2.7Toluene108-88-37.70.964.3 J3.4trans-1,2-Dichloroethene156-60-54.01.8Not Detected3.6trans-1,3-Dichloropropene10061-02-64.60.71Not Detected4.2Trichloroethene79-01-65.51.6Not Detected4.9Vinyl Acetate108-05-4146.2Not Detected11Vinyl Chloride75-01-42.62.2Not Detected2.3J = Estimated value.D: Analyte not within the DoD scope of accreditation.CAS#SurrogatesLimits%Recovery1,2-Dichloroethane-d417060-07-070-130904-Bromofluorobenzene460-00-470-130108Toluene-d82037-26-570-130103Page 12 of 33
Dilution Factor:Instrument/Filename:1/27/24 01:36 AM2.04msdp.i / p012624r2EPA METHOD TO-15 GC/MS FULL SCAN2401465R2-04A1/18/24 09:14 AM1 Liter Summa CanisterNorth HillsMP-21Date/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)1,1,1-Trichloroethane71-55-65.61.4Not Detected5.01,1,2,2-Tetrachloroethane79-34-57.02.4Not Detected6.31,1,2-Trichloroethane79-00-55.61.8Not Detected5.01,1-Dichloroethane75-34-34.10.90Not Detected3.71,1-Dichloroethene75-35-44.02.1Not Detected3.61,2,4-Trichlorobenzene120-82-1305.6Not Detected231,2,4-Trimethylbenzene95-63-65.01.4Not Detected4.51,2-Dibromoethane (EDB)106-93-47.82.6Not Detected7.01,2-Dichlorobenzene95-50-16.11.6Not Detected5.51,2-Dichloroethane107-06-24.11.4Not Detected3.71,2-Dichloropropane78-87-54.71.3Not Detected4.21,3,5-Trimethylbenzene108-67-85.01.3Not Detected4.51,3-Butadiene106-99-02.21.3Not Detected2.01,3-Dichlorobenzene541-73-16.11.4Not Detected5.51,4-Dichlorobenzene106-46-76.12.1Not Detected5.51,4-Dioxane123-91-1153.416112-Butanone (Methyl Ethyl Ketone)78-93-3122.03.1 J9.02-Hexanone591-78-6174.7Not Detected122-Propanol67-63-0103.4117.54-Ethyltoluene622-96-85.01.1Not Detected4.54-Methyl-2-pentanone108-10-14.21.6Not Detected3.8Acetone67-64-1246.79319alpha-Chlorotoluene100-44-75.31.7Not Detected4.8Benzene71-43-23.20.77Not Detected2.9Page 13 of 33
Dilution Factor:Instrument/Filename:1/27/24 01:36 AM2.04msdp.i / p012624r2EPA METHOD TO-15 GC/MS FULL SCAN2401465R2-04A1/18/24 09:14 AM1 Liter Summa CanisterNorth HillsMP-21Date/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Bromodichloromethane75-27-46.82.1Not Detected6.2Bromoform75-25-2104.2Not Detected9.5Bromomethane74-83-9407.0Not Detected12Carbon Disulfide75-15-0132.4229.5Carbon Tetrachloride56-23-56.42.0Not Detected5.8Chlorobenzene108-90-74.70.99Not Detected4.2Chloroethane75-00-3113.7Not Detected8.1Chloroform67-66-35.01.12.2 J4.5Chloromethane74-87-3213.6Not Detected6.3cis-1,2-Dichloroethene156-59-24.00.88Not Detected3.6cis-1,3-Dichloropropene10061-01-54.61.1Not Detected4.2Cyclohexane110-82-73.51.32.6 J3.2Dibromochloromethane124-48-18.72.6Not Detected7.8Ethanol64-17-5199.5Not Detected15Ethyl Acetate141-78-6156.2Not DetectedDEthyl Benzene100-41-44.41.0Not Detected4.0Freon 1175-69-45.71.87.65.2Freon 11376-13-17.81.7Not Detected7.0Freon 11476-14-27.12.0Not Detected6.4Freon 1275-71-85.02.4Not Detected4.5Heptane142-82-54.21.4Not Detected3.8Hexachlorobutadiene87-68-34412Not Detected33Hexane110-54-33.61.1Not Detected3.2m,p-Xylene108-38-38.80.641.6 J4.0Page 14 of 33
Dilution Factor:Instrument/Filename:1/27/24 01:36 AM2.04msdp.i / p012624r2EPA METHOD TO-15 GC/MS FULL SCAN2401465R2-04A1/18/24 09:14 AM1 Liter Summa CanisterNorth HillsMP-21Date/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Methyl tert-butyl ether1634-04-4152.7Not Detected11Methylene Chloride75-09-2353.0Not Detected11Naphthalene91-20-3110.85Not Detected2.1o-Xylene95-47-64.41.1Not Detected4.0Propylene115-07-17.02.1Not Detected5.3Styrene100-42-54.30.77Not Detected3.9Tetrachloroethene127-18-46.91.82106.2Tetrahydrofuran109-99-93.01.9Not Detected2.7Toluene108-88-37.70.963.6 J3.4trans-1,2-Dichloroethene156-60-54.01.8Not Detected3.6trans-1,3-Dichloropropene10061-02-64.60.71Not Detected4.2Trichloroethene79-01-65.51.6Not Detected4.9Vinyl Acetate108-05-4146.2Not Detected11Vinyl Chloride75-01-42.62.2Not Detected2.3J = Estimated value.D: Analyte not within the DoD scope of accreditation.CAS#SurrogatesLimits%Recovery1,2-Dichloroethane-d417060-07-070-130904-Bromofluorobenzene460-00-470-130106Toluene-d82037-26-570-130100Page 15 of 33
Dilution Factor:Instrument/Filename:1/27/24 02:08 AM2.09msdp.i / p012625r2EPA METHOD TO-15 GC/MS FULL SCAN2401465R2-05A1/18/24 09:41 AM1 Liter Summa CanisterNorth HillsMP-22Date/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)1,1,1-Trichloroethane71-55-65.71.4Not Detected5.11,1,2,2-Tetrachloroethane79-34-57.22.5Not Detected6.41,1,2-Trichloroethane79-00-55.71.9Not Detected5.11,1-Dichloroethane75-34-34.20.92Not Detected3.81,1-Dichloroethene75-35-44.12.1Not Detected3.71,2,4-Trichlorobenzene120-82-1315.7Not Detected231,2,4-Trimethylbenzene95-63-65.11.4Not Detected4.61,2-Dibromoethane (EDB)106-93-48.02.6Not Detected7.21,2-Dichlorobenzene95-50-16.31.7Not Detected5.61,2-Dichloroethane107-06-24.21.4Not Detected3.81,2-Dichloropropane78-87-54.81.3Not Detected4.31,3,5-Trimethylbenzene108-67-85.11.4Not Detected4.61,3-Butadiene106-99-02.31.4Not Detected2.11,3-Dichlorobenzene541-73-16.31.5Not Detected5.61,4-Dichlorobenzene106-46-76.32.1Not Detected5.61,4-Dioxane123-91-1153.5Not Detected112-Butanone (Methyl Ethyl Ketone)78-93-3122.1Not Detected9.22-Hexanone591-78-6174.8Not Detected132-Propanol67-63-0103.5Not Detected7.74-Ethyltoluene622-96-85.11.1Not Detected4.64-Methyl-2-pentanone108-10-14.31.6Not Detected3.8Acetone67-64-1256.98.2 J20alpha-Chlorotoluene100-44-75.41.7Not Detected4.9Benzene71-43-23.30.79Not Detected3.0Page 16 of 33
Dilution Factor:Instrument/Filename:1/27/24 02:08 AM2.09msdp.i / p012625r2EPA METHOD TO-15 GC/MS FULL SCAN2401465R2-05A1/18/24 09:41 AM1 Liter Summa CanisterNorth HillsMP-22Date/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Bromodichloromethane75-27-47.02.2Not Detected6.3Bromoform75-25-2114.3Not Detected9.7Bromomethane74-83-9407.2Not Detected12Carbon Disulfide75-15-0132.5Not Detected9.8Carbon Tetrachloride56-23-56.62.1Not Detected5.9Chlorobenzene108-90-74.81.0Not Detected4.3Chloroethane75-00-3113.8Not Detected8.3Chloroform67-66-35.11.2Not Detected4.6Chloromethane74-87-3223.7Not Detected6.5cis-1,2-Dichloroethene156-59-24.10.90Not Detected3.7cis-1,3-Dichloropropene10061-01-54.71.2Not Detected4.3Cyclohexane110-82-73.61.3Not Detected3.2Dibromochloromethane124-48-18.92.6Not Detected8.0Ethanol64-17-5209.8Not Detected16Ethyl Acetate141-78-6156.3Not DetectedDEthyl Benzene100-41-44.51.1Not Detected4.1Freon 1175-69-45.91.9Not Detected5.3Freon 11376-13-18.01.7Not Detected7.2Freon 11476-14-27.32.0Not Detected6.6Freon 1275-71-85.22.5Not Detected4.6Heptane142-82-54.31.4Not Detected3.8Hexachlorobutadiene87-68-34413Not Detected33Hexane110-54-33.71.23.5 J3.3m,p-Xylene108-38-39.10.65Not Detected4.1Page 17 of 33
Dilution Factor:Instrument/Filename:1/27/24 02:08 AM2.09msdp.i / p012625r2EPA METHOD TO-15 GC/MS FULL SCAN2401465R2-05A1/18/24 09:41 AM1 Liter Summa CanisterNorth HillsMP-22Date/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Methyl tert-butyl ether1634-04-4152.8Not Detected11Methylene Chloride75-09-2363.0Not Detected11Naphthalene91-20-3110.87Not Detected2.2o-Xylene95-47-64.51.1Not Detected4.1Propylene115-07-17.22.1Not Detected5.4Styrene100-42-54.40.79Not Detected4.0Tetrachloroethene127-18-47.11.8Not Detected6.4Tetrahydrofuran109-99-93.12.0Not Detected2.8Toluene108-88-37.90.981.8 J3.5trans-1,2-Dichloroethene156-60-54.11.9Not Detected3.7trans-1,3-Dichloropropene10061-02-64.70.73Not Detected4.3Trichloroethene79-01-65.61.7Not Detected5.0Vinyl Acetate108-05-4156.4Not Detected11Vinyl Chloride75-01-42.72.2Not Detected2.4J = Estimated value.D: Analyte not within the DoD scope of accreditation.CAS#SurrogatesLimits%Recovery1,2-Dichloroethane-d417060-07-070-130914-Bromofluorobenzene460-00-470-130105Toluene-d82037-26-570-130103Page 18 of 33
Dilution Factor:Instrument/Filename:1/27/24 03:10 AM2.07msdp.i / p012627r2EPA METHOD TO-15 GC/MS FULL SCAN2401465R2-06A1/18/24 07:53 AM1 Liter Summa CanisterNorth HillsDuplicateDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)1,1,1-Trichloroethane71-55-65.61.4Not Detected5.11,1,2,2-Tetrachloroethane79-34-57.12.4Not Detected6.41,1,2-Trichloroethane79-00-55.61.9Not Detected5.11,1-Dichloroethane75-34-34.20.92Not Detected3.81,1-Dichloroethene75-35-44.12.1Not Detected3.71,2,4-Trichlorobenzene120-82-1315.7Not Detected231,2,4-Trimethylbenzene95-63-65.11.4Not Detected4.61,2-Dibromoethane (EDB)106-93-48.02.6Not Detected7.21,2-Dichlorobenzene95-50-16.21.7Not Detected5.61,2-Dichloroethane107-06-24.21.4Not Detected3.81,2-Dichloropropane78-87-54.81.3Not Detected4.31,3,5-Trimethylbenzene108-67-85.11.4Not Detected4.61,3-Butadiene106-99-02.31.3Not Detected2.11,3-Dichlorobenzene541-73-16.21.4Not Detected5.61,4-Dichlorobenzene106-46-76.22.1Not Detected5.61,4-Dioxane123-91-1153.4Not Detected112-Butanone (Methyl Ethyl Ketone)78-93-3122.0Not Detected9.22-Hexanone591-78-6174.8Not Detected132-Propanol67-63-0103.5Not Detected7.64-Ethyltoluene622-96-85.11.1Not Detected4.64-Methyl-2-pentanone108-10-14.21.6Not Detected3.8Acetone67-64-1246.811 J20alpha-Chlorotoluene100-44-75.41.7Not Detected4.8Benzene71-43-23.30.78Not Detected3.0Page 19 of 33
Dilution Factor:Instrument/Filename:1/27/24 03:10 AM2.07msdp.i / p012627r2EPA METHOD TO-15 GC/MS FULL SCAN2401465R2-06A1/18/24 07:53 AM1 Liter Summa CanisterNorth HillsDuplicateDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Bromodichloromethane75-27-46.92.2Not Detected6.2Bromoform75-25-2114.2Not Detected9.6Bromomethane74-83-9407.1Not Detected12Carbon Disulfide75-15-0132.46.3 J9.7Carbon Tetrachloride56-23-56.52.1Not Detected5.9Chlorobenzene108-90-74.81.0Not Detected4.3Chloroethane75-00-3113.8Not Detected8.2Chloroform67-66-35.01.25.24.5Chloromethane74-87-3213.6Not Detected6.4cis-1,2-Dichloroethene156-59-24.10.89Not Detected3.7cis-1,3-Dichloropropene10061-01-54.71.1Not Detected4.2Cyclohexane110-82-73.61.3Not Detected3.2Dibromochloromethane124-48-18.82.6Not Detected7.9Ethanol64-17-5209.7Not Detected16Ethyl Acetate141-78-6156.3Not DetectedDEthyl Benzene100-41-44.51.1Not Detected4.0Freon 1175-69-45.81.9Not Detected5.2Freon 11376-13-17.91.7Not Detected7.1Freon 11476-14-27.22.0Not Detected6.5Freon 1275-71-85.12.4Not Detected4.6Heptane142-82-54.21.4Not Detected3.8Hexachlorobutadiene87-68-34412Not Detected33Hexane110-54-33.61.1Not Detected3.3m,p-Xylene108-38-39.00.64Not Detected4.0Page 20 of 33
Dilution Factor:Instrument/Filename:1/27/24 03:10 AM2.07msdp.i / p012627r2EPA METHOD TO-15 GC/MS FULL SCAN2401465R2-06A1/18/24 07:53 AM1 Liter Summa CanisterNorth HillsDuplicateDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Methyl tert-butyl ether1634-04-4152.7Not Detected11Methylene Chloride75-09-2363.0Not Detected11Naphthalene91-20-3110.86Not Detected2.2o-Xylene95-47-64.51.1Not Detected4.0Propylene115-07-17.12.1Not Detected5.3Styrene100-42-54.40.78Not Detected4.0Tetrachloroethene127-18-47.01.83.5 J6.3Tetrahydrofuran109-99-93.02.0Not Detected2.7Toluene108-88-37.80.982.4 J3.5trans-1,2-Dichloroethene156-60-54.11.9Not Detected3.7trans-1,3-Dichloropropene10061-02-64.70.72Not Detected4.2Trichloroethene79-01-65.61.73.3 J5.0Vinyl Acetate108-05-4146.3Not Detected11Vinyl Chloride75-01-42.62.2Not Detected2.4J = Estimated value.D: Analyte not within the DoD scope of accreditation.CAS#SurrogatesLimits%Recovery1,2-Dichloroethane-d417060-07-070-130904-Bromofluorobenzene460-00-470-130104Toluene-d82037-26-570-130101Page 21 of 33
Dilution Factor:Instrument/Filename:1/26/24 12:44 PM1.00msdp.i / p012606cEPA METHOD TO-15 GC/MS FULL SCAN2401465R2-07ANA - Not ApplicableNA - Not ApplicableNorth HillsLab BlankDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)1,1,1-Trichloroethane71-55-62.70.66Not Detected2.41,1,2,2-Tetrachloroethane79-34-53.41.2Not Detected3.11,1,2-Trichloroethane79-00-52.70.90Not Detected2.41,1-Dichloroethane75-34-32.00.44Not Detected1.81,1-Dichloroethene75-35-42.01.0Not Detected1.81,2,4-Trichlorobenzene120-82-1152.7Not Detected111,2,4-Trimethylbenzene95-63-62.40.661.3 J2.21,2-Dibromoethane (EDB)106-93-43.81.2Not Detected3.41,2-Dichlorobenzene95-50-13.00.81Not Detected2.71,2-Dichloroethane107-06-22.00.70Not Detected1.81,2-Dichloropropane78-87-52.30.63Not Detected2.11,3,5-Trimethylbenzene108-67-82.40.66Not Detected2.21,3-Butadiene106-99-01.10.65Not Detected1.01,3-Dichlorobenzene541-73-13.00.70Not Detected2.71,4-Dichlorobenzene106-46-73.01.0Not Detected2.71,4-Dioxane123-91-17.21.6Not Detected5.42-Butanone (Methyl Ethyl Ketone)78-93-35.90.99Not Detected4.42-Hexanone591-78-68.22.3Not Detected6.12-Propanol67-63-04.91.7Not Detected3.74-Ethyltoluene622-96-82.40.54Not Detected2.24-Methyl-2-pentanone108-10-12.00.79Not Detected1.8Acetone67-64-1123.3Not Detected9.5alpha-Chlorotoluene100-44-72.60.83Not Detected2.3Benzene71-43-21.60.38Not Detected1.4Page 22 of 33
Dilution Factor:Instrument/Filename:1/26/24 12:44 PM1.00msdp.i / p012606cEPA METHOD TO-15 GC/MS FULL SCAN2401465R2-07ANA - Not ApplicableNA - Not ApplicableNorth HillsLab BlankDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Bromodichloromethane75-27-43.41.0Not Detected3.0Bromoform75-25-25.22.0Not Detected4.6Bromomethane74-83-9193.4Not Detected5.8Carbon Disulfide75-15-06.21.2Not Detected4.7Carbon Tetrachloride56-23-53.11.0Not Detected2.8Chlorobenzene108-90-72.30.48Not Detected2.1Chloroethane75-00-35.31.8Not Detected4.0Chloroform67-66-32.40.56Not Detected2.2Chloromethane74-87-3101.8Not Detected3.1cis-1,2-Dichloroethene156-59-22.00.43Not Detected1.8cis-1,3-Dichloropropene10061-01-52.30.55Not Detected2.0Cyclohexane110-82-71.70.63Not Detected1.5Dibromochloromethane124-48-14.21.3Not Detected3.8Ethanol64-17-59.44.7Not Detected7.5Ethyl Acetate141-78-67.23.0Not DetectedDEthyl Benzene100-41-42.20.52Not Detected2.0Freon 1175-69-42.80.91Not Detected2.5Freon 11376-13-13.80.83Not Detected3.4Freon 11476-14-23.50.97Not Detected3.1Freon 1275-71-82.51.2Not Detected2.2Heptane142-82-52.00.70Not Detected1.8Hexachlorobutadiene87-68-3216.1Not Detected16Hexane110-54-31.80.55Not Detected1.6m,p-Xylene108-38-34.30.31Not Detected2.0Page 23 of 33
Dilution Factor:Instrument/Filename:1/26/24 12:44 PM1.00msdp.i / p012606cEPA METHOD TO-15 GC/MS FULL SCAN2401465R2-07ANA - Not ApplicableNA - Not ApplicableNorth HillsLab BlankDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:(ug/m3)CAS#LODCompound(ug/m3)MDLRpt. Limit(ug/m3)Amount(ug/m3)Methyl tert-butyl ether1634-04-47.21.3Not Detected5.4Methylene Chloride75-09-2171.4Not Detected5.2Naphthalene91-20-35.20.41Not Detected1.0o-Xylene95-47-62.20.52Not Detected2.0Propylene115-07-13.41.0Not Detected2.6Styrene100-42-52.10.38Not Detected1.9Tetrachloroethene127-18-43.40.87Not Detected3.0Tetrahydrofuran109-99-91.50.94Not Detected1.3Toluene108-88-33.80.47Not Detected1.7trans-1,2-Dichloroethene156-60-52.00.91Not Detected1.8trans-1,3-Dichloropropene10061-02-62.30.35Not Detected2.0Trichloroethene79-01-62.70.80Not Detected2.4Vinyl Acetate108-05-47.03.0Not Detected5.3Vinyl Chloride75-01-41.31.1Not Detected1.2J = Estimated value.D: Analyte not within the DoD scope of accreditation.CAS#SurrogatesLimits%Recovery1,2-Dichloroethane-d417060-07-070-130884-Bromofluorobenzene460-00-470-130105Toluene-d82037-26-570-130100Page 24 of 33
Dilution Factor:Instrument/Filename:1/26/24 11:13 AM1.00msdp.i / p012603EPA METHOD TO-15 GC/MS FULL SCAN2401465R2-08ANA - Not ApplicableNA - Not ApplicableNorth HillsCCVDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:CAS#Compound%Recovery1,1,1-Trichloroethane71-55-6851,1,2,2-Tetrachloroethane79-34-5951,1,2-Trichloroethane79-00-5941,1-Dichloroethane75-34-3961,1-Dichloroethene75-35-4871,2,4-Trichlorobenzene120-82-1921,2,4-Trimethylbenzene95-63-6891,2-Dibromoethane (EDB)106-93-4961,2-Dichlorobenzene95-50-11001,2-Dichloroethane107-06-2981,2-Dichloropropane78-87-51041,3,5-Trimethylbenzene108-67-8961,3-Butadiene106-99-0881,3-Dichlorobenzene541-73-11011,4-Dichlorobenzene106-46-7981,4-Dioxane123-91-1982-Butanone (Methyl Ethyl Ketone)78-93-3912-Hexanone591-78-6902-Propanol67-63-0854-Ethyltoluene622-96-8974-Methyl-2-pentanone108-10-193Acetone67-64-192alpha-Chlorotoluene100-44-786Benzene71-43-2104Page 25 of 33
Dilution Factor:Instrument/Filename:1/26/24 11:13 AM1.00msdp.i / p012603EPA METHOD TO-15 GC/MS FULL SCAN2401465R2-08ANA - Not ApplicableNA - Not ApplicableNorth HillsCCVDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:CAS#Compound%RecoveryBromodichloromethane75-27-499Bromoform75-25-2108Bromomethane74-83-999Carbon Disulfide75-15-095Carbon Tetrachloride56-23-591Chlorobenzene108-90-797Chloroethane75-00-392Chloroform67-66-386Chloromethane74-87-3108cis-1,2-Dichloroethene156-59-288cis-1,3-Dichloropropene10061-01-595Cyclohexane110-82-783Dibromochloromethane124-48-1100Ethanol64-17-5102Ethyl Acetate141-78-694Ethyl Benzene100-41-491Freon 1175-69-493Freon 11376-13-1100Freon 11476-14-296Freon 1275-71-895Heptane142-82-594Hexachlorobutadiene87-68-3110Hexane110-54-389m,p-Xylene108-38-393Page 26 of 33
Dilution Factor:Instrument/Filename:1/26/24 11:13 AM1.00msdp.i / p012603EPA METHOD TO-15 GC/MS FULL SCAN2401465R2-08ANA - Not ApplicableNA - Not ApplicableNorth HillsCCVDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:CAS#Compound%RecoveryMethyl tert-butyl ether1634-04-482Methylene Chloride75-09-2100Naphthalene91-20-371o-Xylene95-47-688Propylene115-07-1100Styrene100-42-596Tetrachloroethene127-18-4104Tetrahydrofuran109-99-992Toluene108-88-3101trans-1,2-Dichloroethene156-60-587trans-1,3-Dichloropropene10061-02-689Trichloroethene79-01-6101Vinyl Acetate108-05-485Vinyl Chloride75-01-4100D: Analyte not within the DoD scope of accreditation.CAS#SurrogatesLimits%Recovery1,2-Dichloroethane-d417060-07-070-130904-Bromofluorobenzene460-00-470-130118Toluene-d82037-26-570-130104Page 27 of 33
Dilution Factor:Instrument/Filename:1/26/24 11:43 AM1.00msdp.i / p012604EPA METHOD TO-15 GC/MS FULL SCAN2401465R2-09ANA - Not ApplicableNA - Not ApplicableNorth HillsLCSDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:CAS#Compound%Recovery1,1,1-Trichloroethane71-55-6881,1,2,2-Tetrachloroethane79-34-5961,1,2-Trichloroethane79-00-5951,1-Dichloroethane75-34-3981,1-Dichloroethene75-35-4881,2,4-Trichlorobenzene120-82-1881,2,4-Trimethylbenzene95-63-6911,2-Dibromoethane (EDB)106-93-4961,2-Dichlorobenzene95-50-1981,2-Dichloroethane107-06-21011,2-Dichloropropane78-87-51021,3,5-Trimethylbenzene108-67-8971,3-Butadiene106-99-0921,3-Dichlorobenzene541-73-11011,4-Dichlorobenzene106-46-7991,4-Dioxane123-91-11012-Butanone (Methyl Ethyl Ketone)78-93-3952-Hexanone591-78-6952-Propanol67-63-0954-Ethyltoluene622-96-8984-Methyl-2-pentanone108-10-194Acetone67-64-196alpha-Chlorotoluene100-44-783Benzene71-43-2105Page 28 of 33* % Recovery is calculated using unrounded analytical results.
Dilution Factor:Instrument/Filename:1/26/24 11:43 AM1.00msdp.i / p012604EPA METHOD TO-15 GC/MS FULL SCAN2401465R2-09ANA - Not ApplicableNA - Not ApplicableNorth HillsLCSDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:CAS#Compound%RecoveryBromodichloromethane75-27-498Bromoform75-25-2106Bromomethane74-83-9105Carbon Disulfide75-15-0101Carbon Tetrachloride56-23-593Chlorobenzene108-90-7100Chloroethane75-00-396Chloroform67-66-386Chloromethane74-87-3113cis-1,2-Dichloroethene156-59-291cis-1,3-Dichloropropene10061-01-596Cyclohexane110-82-788Dibromochloromethane124-48-199Ethanol64-17-5127Ethyl Acetate141-78-6101Ethyl Benzene100-41-493Freon 1175-69-495Freon 11376-13-199Freon 11476-14-299Freon 1275-71-897Heptane142-82-594Hexachlorobutadiene87-68-3105Hexane110-54-393m,p-Xylene108-38-393Page 29 of 33* % Recovery is calculated using unrounded analytical results.
Dilution Factor:Instrument/Filename:1/26/24 11:43 AM1.00msdp.i / p012604EPA METHOD TO-15 GC/MS FULL SCAN2401465R2-09ANA - Not ApplicableNA - Not ApplicableNorth HillsLCSDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:CAS#Compound%RecoveryMethyl tert-butyl ether1634-04-486Methylene Chloride75-09-2101Naphthalene91-20-377o-Xylene95-47-690Propylene115-07-1106Styrene100-42-596Tetrachloroethene127-18-4105Tetrahydrofuran109-99-9106Toluene108-88-399trans-1,2-Dichloroethene156-60-590trans-1,3-Dichloropropene10061-02-691Trichloroethene79-01-6103Vinyl Acetate108-05-4127Vinyl Chloride75-01-4103D: Analyte not within the DoD scope of accreditation.CAS#SurrogatesLimits%Recovery1,2-Dichloroethane-d417060-07-070-130914-Bromofluorobenzene460-00-470-130113Toluene-d82037-26-570-130102Page 30 of 33* % Recovery is calculated using unrounded analytical results.
Dilution Factor:Instrument/Filename:1/26/24 12:12 PM1.00msdp.i / p012605EPA METHOD TO-15 GC/MS FULL SCAN2401465R2-09AANA - Not ApplicableNA - Not ApplicableNorth HillsLCSDDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:CAS#Compound%Recovery1,1,1-Trichloroethane71-55-6851,1,2,2-Tetrachloroethane79-34-5931,1,2-Trichloroethane79-00-5941,1-Dichloroethane75-34-3961,1-Dichloroethene75-35-4861,2,4-Trichlorobenzene120-82-1981,2,4-Trimethylbenzene95-63-6901,2-Dibromoethane (EDB)106-93-4941,2-Dichlorobenzene95-50-1971,2-Dichloroethane107-06-2971,2-Dichloropropane78-87-51011,3,5-Trimethylbenzene108-67-8961,3-Butadiene106-99-0911,3-Dichlorobenzene541-73-1991,4-Dichlorobenzene106-46-7971,4-Dioxane123-91-1992-Butanone (Methyl Ethyl Ketone)78-93-3942-Hexanone591-78-6942-Propanol67-63-0944-Ethyltoluene622-96-8954-Methyl-2-pentanone108-10-193Acetone67-64-195alpha-Chlorotoluene100-44-782Benzene71-43-2100Page 31 of 33* % Recovery is calculated using unrounded analytical results.
Dilution Factor:Instrument/Filename:1/26/24 12:12 PM1.00msdp.i / p012605EPA METHOD TO-15 GC/MS FULL SCAN2401465R2-09AANA - Not ApplicableNA - Not ApplicableNorth HillsLCSDDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:CAS#Compound%RecoveryBromodichloromethane75-27-495Bromoform75-25-2104Bromomethane74-83-9101Carbon Disulfide75-15-098Carbon Tetrachloride56-23-590Chlorobenzene108-90-797Chloroethane75-00-395Chloroform67-66-385Chloromethane74-87-3109cis-1,2-Dichloroethene156-59-289cis-1,3-Dichloropropene10061-01-595Cyclohexane110-82-787Dibromochloromethane124-48-197Ethanol64-17-5127Ethyl Acetate141-78-6100Ethyl Benzene100-41-492Freon 1175-69-492Freon 11376-13-197Freon 11476-14-298Freon 1275-71-894Heptane142-82-594Hexachlorobutadiene87-68-3114Hexane110-54-392m,p-Xylene108-38-391Page 32 of 33* % Recovery is calculated using unrounded analytical results.
Dilution Factor:Instrument/Filename:1/26/24 12:12 PM1.00msdp.i / p012605EPA METHOD TO-15 GC/MS FULL SCAN2401465R2-09AANA - Not ApplicableNA - Not ApplicableNorth HillsLCSDDate/Time Analyzed:Client ID:Lab ID:Date/Time Collected:Media:CAS#Compound%RecoveryMethyl tert-butyl ether1634-04-486Methylene Chloride75-09-298Naphthalene91-20-388o-Xylene95-47-689Propylene115-07-1104Styrene100-42-594Tetrachloroethene127-18-4104Tetrahydrofuran109-99-9104Toluene108-88-396trans-1,2-Dichloroethene156-60-588trans-1,3-Dichloropropene10061-02-691Trichloroethene79-01-6101Vinyl Acetate108-05-4127Vinyl Chloride75-01-4101D: Analyte not within the DoD scope of accreditation.CAS#SurrogatesLimits%Recovery1,2-Dichloroethane-d417060-07-070-130884-Bromofluorobenzene460-00-470-130115Toluene-d82037-26-570-130101Page 33 of 33* % Recovery is calculated using unrounded analytical results.

APPENDIX F
INDOOR AIR AND SUB-SLAB SOIL GAS VAPOR INTRUSION RISK CALCULATIONS
DEQ Risk Calculator - Vapor Intrusion - Resident Indoor Air
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID:
Exposure Unit ID: EU 1 - 3% attenuation factor applied
CAS # Chemical Name:
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
67-64-1 Acetone 5.8 - -
71-43-2 Benzene 1 3.6E-01 6.3E+00 2.8E-06 3.2E-02
100-44-7 Benzyl Chloride 0.084 5.7E-02 2.1E-01 1.5E-06 8.1E-02
56-23-5 Carbon Tetrachloride 0.21 4.7E-01 2.1E+01 4.5E-07 2.0E-03
67-66-3 Chloroform 0.15 1.2E-01 2.0E+01 1.2E-06 1.5E-03
74-87-3 Chloromethane 0.84 - 1.9E+01 8.9E-03
75-71-8 Dichlorodifluoromethane 1.6 - 2.1E+01 1.5E-02
100-41-4 Ethylbenzene 0.56 1.1E+00 2.1E+02 5.0E-07 5.4E-04
87-68-3 Hexachlorobutadiene 0.6 1.3E-01 -4.7E-06
67-63-0 Isopropanol 2.3 - 4.2E+01 1.1E-02
78-93-3 Methyl Ethyl Ketone (2-Butanone) 1.2 - 1.0E+03 2.3E-04
75-09-2 Methylene Chloride 0.29 1.0E+02 1.3E+02 2.9E-09 4.6E-04
91-20-3 ~Naphthalene 0.057 8.3E-02 6.3E-01 6.9E-07 1.8E-02
108-88-3 Toluene 2.2 - 1.0E+03 4.2E-04
76-13-1 Trichloro-1,2,2-trifluoroethane, 1,1,2- 0.29 - 1.0E+03 5.6E-05
75-69-4 Trichlorofluoromethane 0.84 - -
95-63-6 Trimethylbenzene, 1,2,4- 1.4 - 1.3E+01 2.2E-02
108-67-8 Trimethylbenzene, 1,3,5- 0.42 - 1.3E+01 6.7E-03
108-38-3 Xylene, m- 2.1 - 2.1E+01 2.0E-02
95-47-6 Xylene, o- 0.82 - 2.1E+01 7.9E-03
Cumulative: 1.2E-05 2.3E-01
All concentrations are in ug/m3
Output Form 3C
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic
risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 μg/m3.
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if
indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals
are likely not associated with vapor intrusion.
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Resident Indoor Air
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID:
Exposure Unit ID: EU 2 - 3% attenuation factor applied
CAS #Chemical Name:
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
67-64-1 Acetone 0.36 --
71-43-2 Benzene 0.59 3.6E-01 6.3E+00 1.6E-06 1.9E-02
100-44-7 Benzyl Chloride 0.051 5.7E-02 2.1E-01 8.9E-07 4.9E-02
56-23-5 Carbon Tetrachloride 0.26 4.7E-01 2.1E+01 5.6E-07 2.5E-03
67-66-3 Chloroform 0.18 1.2E-01 2.0E+01 1.5E-06 1.8E-03
74-87-3 Chloromethane 0.81 -1.9E+01 8.6E-03
110-82-7 Cyclohexane 0.039 -1.3E+03 6.2E-06
75-71-8 Dichlorodifluoromethane 1.4 -2.1E+01 1.3E-02
123-91-1 Dioxane, 1,4-0.65 5.6E-01 6.3E+00 1.2E-06 2.1E-02
141-78-6 Ethyl Acetate 5.1 -1.5E+01 7.0E-02
100-41-4 Ethylbenzene 0.033 1.1E+00 2.1E+02 2.9E-08 3.2E-05
109-99-9 ~Tetrahydrofuran 0.06 -4.2E+02 2.9E-05
142-82-5 Heptane, N-0.042 -8.3E+01 1.0E-04
87-68-3 Hexachlorobutadiene 0.36 1.3E-01 -2.8E-06
110-54-3 Hexane, N-0.033 -1.5E+02 4.5E-05
67-63-0 Isopropanol 0.105 -4.2E+01 5.0E-04
78-93-3 Methyl Ethyl Ketone (2-Butanone)0.06 -1.0E+03 1.2E-05
108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone) 0.79 -6.3E+02 2.5E-04
75-09-2 Methylene Chloride 2.6 1.0E+02 1.3E+02 2.6E-08 4.2E-03
91-20-3 ~Naphthalene 0.026 8.3E-02 6.3E-01 3.1E-07 8.3E-03
100-42-5 Styrene 0.023 -2.1E+02 2.2E-05
108-88-3 Toluene 0.129 -1.0E+03 2.5E-05
79-01-6 Trichloroethylene 1.2 4.8E-01 4.2E-01 2.5E-06 5.8E-01
75-69-4 Trichlorofluoromethane 0.79 --
95-63-6 Trimethylbenzene, 1,2,4-1.2 -1.3E+01 1.9E-02
108-67-8 Trimethylbenzene, 1,3,5-0.34 -1.3E+01 5.4E-03
108-38-3 Xylene, m-0.023 -2.1E+01 2.2E-04
95-47-6 Xylene, o-0.033 -2.1E+01 3.2E-04
Cumulative: 1.1E-05 8.0E-01
All concentrations are in ug/m3
Output Form 3C
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic
risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 μg/m3.
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if
indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals
are likely not associated with vapor intrusion.
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Resident Indoor Air
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID:
Exposure Unit ID: EU 3 - 3% attenuation factor applied
CAS # Chemical Name:
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
67-64-1 Acetone 2.79 - -
71-43-2 Benzene 0.61 3.6E-01 6.3E+00 1.7E-06 1.9E-02
100-44-7 Benzyl Chloride 0.051 5.7E-02 2.1E-01 8.9E-07 4.9E-02
56-23-5 Carbon Tetrachloride 0.25 4.7E-01 2.1E+01 5.3E-07 2.4E-03
67-66-3 Chloroform 0.066 1.2E-01 2.0E+01 5.4E-07 6.5E-04
110-82-7 Cyclohexane 2.4 - 1.3E+03 3.8E-04
75-71-8 Dichlorodifluoromethane 1.5 - 2.1E+01 1.4E-02
141-78-6 Ethyl Acetate 5.5 - 1.5E+01 7.5E-02
100-41-4 Ethylbenzene 0.03 1.1E+00 2.1E+02 2.7E-08 2.9E-05
109-99-9 ~Tetrahydrofuran 0.057 - 4.2E+02 2.7E-05
142-82-5 Heptane, N- 0.042 - 8.3E+01 1.0E-04
87-68-3 Hexachlorobutadiene 0.36 1.3E-01 -2.8E-06
67-63-0 Isopropanol 0.33 - 4.2E+01 1.6E-03
78-93-3 Methyl Ethyl Ketone (2-Butanone) 0.093 - 1.0E+03 1.8E-05
108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone) 1.6 - 6.3E+025.1E-04
75-09-2 Methylene Chloride 2.9 1.0E+02 1.3E+02 2.9E-08 4.6E-03
91-20-3 ~Naphthalene 0.026 8.3E-02 6.3E-01 3.1E-07 8.3E-03
100-42-5 Styrene 0.023 -2.1E+02 2.2E-05
108-88-3 Toluene 0.108 -1.0E+03 2.1E-05
75-69-4 Trichlorofluoromethane 0.87 --
95-63-6 Trimethylbenzene, 1,2,4-1.3 -1.3E+01 2.1E-02
108-67-8 Trimethylbenzene, 1,3,5-0.36 -1.3E+01 5.8E-03
108-38-3 Xylene, m-0.048 -2.1E+01 4.6E-04
95-47-6 Xylene, o-0.033 -2.1E+01 3.2E-04
Cumulative: 6.9E-06 2.0E-01
All concentrations are in ug/m3
Output Form 3C
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic
risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 μg/m3.
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if
indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals
are likely not associated with vapor intrusion.
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Resident Indoor Air
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID:
Exposure Unit ID: EU 4 - 3% attenuation factor applied
CAS # Chemical Name:
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
67-64-1 Acetone 0.246 - -
71-43-2 Benzene 0.57 3.6E-01 6.3E+00 1.6E-06 1.8E-02
100-44-7 Benzyl Chloride 0.051 5.7E-02 2.1E-01 8.9E-07 4.9E-02
56-23-5 Carbon Tetrachloride 0.25 4.7E-01 2.1E+01 5.3E-07 2.4E-03
67-66-3 Chloroform 0.036 1.2E-01 2.0E+01 2.9E-07 3.5E-04
74-87-3 Chloromethane 0.65 - 1.9E+01 6.9E-03
110-82-7 Cyclohexane 0.039 - 1.3E+03 6.2E-06
75-71-8 Dichlorodifluoromethane 1.3 - 2.1E+01 1.2E-02
123-91-1 Dioxane, 1,4- 0.77 5.6E-01 6.3E+00 1.4E-06 2.5E-02
141-78-6 Ethyl Acetate 1.6 - 1.5E+01 2.2E-02
100-41-4 Ethylbenzene 0.033 1.1E+00 2.1E+02 2.9E-08 3.2E-05
109-99-9 ~Tetrahydrofuran 0.06 - 4.2E+02 2.9E-05
142-82-5 Heptane, N- 0.87 - 8.3E+01 2.1E-03
87-68-3 Hexachlorobutadiene 0.39 1.3E-01 -3.1E-06
67-63-0 Isopropanol 0.105 - 4.2E+01 5.0E-04
78-93-3 Methyl Ethyl Ketone (2-Butanone) 0.063 - 1.0E+03 1.2E-05
108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone) 0.68 - 6.3E+02 2.2E-04
75-09-2 Methylene Chloride 0.09 1.0E+02 1.3E+02 8.9E-10 1.4E-04
91-20-3 ~Naphthalene 0.026 8.3E-02 6.3E-01 3.1E-07 8.3E-03
100-42-5 Styrene 0.024 - 2.1E+02 2.3E-05
108-88-3 Toluene 0.054 - 1.0E+03 1.0E-05
76-13-1 Trichloro-1,2,2-trifluoroethane, 1,1,2- 0.33 - 1.0E+03 6.3E-05
75-69-4 Trichlorofluoromethane 0.71 - -
95-63-6 Trimethylbenzene, 1,2,4- 0.042 - 1.3E+01 6.7E-04
108-67-8 Trimethylbenzene, 1,3,5- 0.42 - 1.3E+01 6.7E-03
108-38-3 Xylene, m- 0.02 - 2.1E+01 1.9E-04
95-47-6 Xylene, o- 0.033 - 2.1E+01 3.2E-04
Cumulative: 8.1E-06 1.6E-01
All concentrations are in ug/m3
Output Form 3C
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic
risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 μg/m3.
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if
indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals
are likely not associated with vapor intrusion.
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID:
Exposure Unit ID: EU 1
CAS # Chemical Name:
Soil Gas
Concentration
(ug/m3)
Calculated
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
67-64-1 Acetone 1600 48 --
71-43-2 Benzene 2.2 0.066 3.6E-01 6.3E+00 1.8E-07 2.1E-03
100-44-7 Benzyl Chloride 2.8 0.084 5.7E-02 2.1E-01 1.5E-06 8.1E-02
75-27-4 Bromodichloromethane 3.5 0.105 7.6E-02 -1.4E-06
67-66-3 Chloroform 5.9 0.177 1.2E-01 2.0E+01 1.4E-06 1.7E-03
110-82-7 Cyclohexane 3.1 0.093 -1.3E+03 1.5E-05
106-93-4 Dibromoethane, 1,2-4.2 0.126 4.7E-03 1.9E+00 2.7E-05 1.3E-02
142-82-5 Heptane, N-8.8 0.264 -8.3E+01 6.3E-04
87-68-3 Hexachlorobutadiene 20 0.6 1.3E-01 -4.7E-06
110-54-3 Hexane, N-5.3 0.159 -1.5E+02 2.2E-04
67-63-0 Isopropanol 50 1.5 -4.2E+01 7.2E-03
78-93-3 Methyl Ethyl Ketone (2-Butanone)5.7 0.171 -1.0E+03 3.3E-05
91-20-3 ~Naphthalene 1.9 0.057 8.3E-02 6.3E-01 6.9E-07 1.8E-02
79-34-5 Tetrachloroethane, 1,1,2,2-4 0.12 4.8E-02 -2.5E-06
127-18-4 Tetrachloroethylene 26 0.78 1.1E+01 8.3E+00 7.2E-08 1.9E-02
108-88-3 Toluene 4.9 0.147 -1.0E+03 2.8E-05
79-00-5 Trichloroethane, 1,1,2-3 0.09 1.8E-01 4.2E-02 5.1E-07 4.3E-01
75-69-4 Trichlorofluoromethane 4 0.12 --
108-38-3 Xylene, m-2.4 0.072 -2.1E+01 6.9E-04
Cumulative: 4.0E-05 5.8E-01
All concentrations are in ug/m3
Output Form 3B
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID:
Exposure Unit ID: EU 2
CAS # Chemical Name:
Soil Gas
Concentration
(ug/m3)
Calculated
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
67-64-1 Acetone 12 0.36 --
75-15-0 Carbon Disulfide 6.3 0.189 -1.5E+02 2.6E-04
67-66-3 Chloroform 5.2 0.156 1.2E-01 2.0E+01 1.3E-06 1.5E-03
106-93-4 Dibromoethane, 1,2-2.6 0.078 4.7E-03 1.9E+00 1.7E-05 8.3E-03
87-68-3 Hexachlorobutadiene 12 0.36 1.3E-01 -2.8E-06
79-34-5 Tetrachloroethane, 1,1,2,2-2.4 0.072 4.8E-02 -1.5E-06
127-18-4 Tetrachloroethylene 7.4 0.222 1.1E+01 8.3E+00 2.1E-08 5.3E-03
108-88-3 Toluene 4.3 0.129 -1.0E+03 2.5E-05
79-00-5 Trichloroethane, 1,1,2-1.9 0.057 1.8E-01 4.2E-02 3.2E-07 2.7E-01
79-01-6 Trichloroethylene 4.5 0.135 4.8E-01 4.2E-01 2.8E-07 6.5E-02
75-69-4 Trichlorofluoromethane 13 0.39 --
108-38-3 Xylene, m-0.78 0.0234 -2.1E+01 2.2E-04
Cumulative: 2.3E-05 3.5E-01
All concentrations are in ug/m3
Output Form 3B
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID:
Exposure Unit ID: EU 3
CAS # Chemical Name:
Soil Gas
Concentration
(ug/m3)
Calculated
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
67-64-1 Acetone 93 2.79 --
75-15-0 Carbon Disulfide 22 0.66 -1.5E+02 9.0E-04
67-66-3 Chloroform 2.2 0.066 1.2E-01 2.0E+01 5.4E-07 6.5E-04
110-82-7 Cyclohexane 2.6 0.078 -1.3E+03 1.2E-05
106-93-4 Dibromoethane, 1,2-2.6 0.078 4.7E-03 1.9E+00 1.7E-05 8.3E-03
123-91-1 Dioxane, 1,4-16 0.48 5.6E-01 6.3E+00 8.5E-07 1.5E-02
87-68-3 Hexachlorobutadiene 12 0.36 1.3E-01 -2.8E-06
67-63-0 Isopropanol 11 0.33 -4.2E+01 1.6E-03
78-93-3 Methyl Ethyl Ketone (2-Butanone)3.1 0.093 -1.0E+03 1.8E-05
79-34-5 Tetrachloroethane, 1,1,2,2-2.4 0.072 4.8E-02 -1.5E-06
127-18-4 Tetrachloroethylene 210 6.3 1.1E+01 8.3E+00 5.8E-07 1.5E-01
108-88-3 Toluene 3.6 0.108 -1.0E+03 2.1E-05
79-00-5 Trichloroethane, 1,1,2-1.8 0.054 1.8E-01 4.2E-02 3.1E-07 2.6E-01
75-69-4 Trichlorofluoromethane 7.6 0.228 --
108-38-3 Xylene, m-1.6 0.048 -2.1E+01 4.6E-04
Cumulative: 2.3E-05 4.4E-01
All concentrations are in ug/m3
Output Form 3B
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID:
Exposure Unit ID: EU 4
CAS # Chemical Name:
Soil Gas
Concentration
(ug/m3)
Calculated
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
67-64-1 Acetone 8.2 0.246 --
106-93-4 Dibromoethane, 1,2-2.6 0.078 4.7E-03 1.9E+00 1.7E-05 8.3E-03
87-68-3 Hexachlorobutadiene 13 0.39 1.3E-01 -3.1E-06
110-54-3 Hexane, N-3.5 0.105 -1.5E+02 1.4E-04
79-34-5 Tetrachloroethane, 1,1,2,2-2.5 0.075 4.8E-02 -1.5E-06
108-88-3 Toluene 1.8 0.054 -1.0E+03 1.0E-05
79-00-5 Trichloroethane, 1,1,2-1.9 0.057 1.8E-01 4.2E-02 3.2E-07 2.7E-01
Cumulative: 2.2E-05 2.8E-01
All concentrations are in ug/m3
Output Form 3B
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
North Carolina DEQ Risk Calculator