25008_NorthHillsExpansion_PreOccupancyReport_20230809

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 ....................................................................... 12 

FIGURES
Figure 1 Topographic Site Map
Figure 2 Site Redevelopment Plan
Figure 3 As-Built VIMS Monitoring Network
Figure 4 As-Built VIMS Building Y
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 subject site is on 8.63 acres located in 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 the subject site has been impacted by releases originating from these
sites. The contaminants released from these sites are volatile organic compounds (VOCs)
including chlorinated solvents and petroleum compounds. Assessment activities conducted
in association with the dry cleaners by the Dry-Cleaning Solvent Cleanup Act Program have
identified VOCs in soil gas at properties adjacent to the subject site. In May 2021, sub-slab
soil gas sampling activities were conducted at the site. These sampling activities are
summarized in the report Soil Gas Assessment Report, dated June 23, 2021 and authored
by Mid-Atlantic Associates, Inc. The presence and concentrations of the VOCs detected in
soil gas and groundwater on and near the subject site suggest that a vapor encroachment
condition exists at the site. Therefore, a Vapor Intrusion Mitigation System (VIMS) has been
constructed in conjunction with redevelopment of the subject site. The VIMS was
constructed in accordance with the Vapor Intrusion Mitigation System Design Submittal,
Revision 3 dated December 21, 2021 (VIMS Plan). This VIMS Plan 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. The VIMS Plan outlines a
sequential sampling approach where the initial sampling is limited to sampling the 20 sub-
slab monitoring points included in the VIMS design (there are 21 monitoring points, but the
DEQ-approved VIMS Plans does not require sampling of MP-14 located in the fire service
access elevators (FSAE) room). Under this BRS-approved VIMS Plan, indoor air sampling
would only be conducted if/where the sub-slab soil gas testing results indicated it was
warranted. Subsequent to the 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.
This addendum was approved by the BRS on June 22, 2023.

The 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. Buildings P, U, T and Y are nearing completion with occupancy planned for
August 2023. These buildings are used for either parking or commercial office. There are
no residential uses in these structures. Building W has ground floor retail/leasing space
with residential use on the floors above. Building W is scheduled for occupancy in first
quarter 2024. Currently, construction of Building W is not complete enough to conduct
pre-occupancy testing. Post-construction/Pre-occupancy VIMS reporting for Building W
will be provided under separate cover.

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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). The following monitoring point changes
have occurred:

Monitoring
Point Location Change Reason

MP-3 North-Central Stair Eliminated Stair is on a 5-foot-thick mat footing with
slab floor placed directly on the footing
MP-4 Central Elevator Eliminated Elevator removed from building
MP-6 West-Central Elevator Eliminated Elevator removed from building
MP-7 Eastern Storage Room Eliminated Storage removed from building
MP-8 East-Central Stair Eliminated Stair is an outdoor stair

In addition, the ground-contact portion of Building Y changed. This footprint was reduced
and this change mandated modifications to the perforated piping layout used in this sub-
slab depressurization area. This building design change also triggered the relocation of
Monitoring Point MP-12 (Figure 4) to ensure that it remained in the area targeted for
depressurization. Since this building design change reduced the area targeted for
depressurization, additional piping and/or fans were not required. Aside from these
changes, 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; which is 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.

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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 Y), inspections were
conducted of the gravel layer and of the sub-slab piping (perforated or solid) prior to
placement 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, 22 inspections were conducted
during the construction of the VIMS for Buildings P, U, T and Y.

2.3 VIMS Influence Testing

The portion of the VIMS that includes sub-slab depressurization is located at Building Y
(locations associated with Buildings P, T and U are barrier only VIMS). The influence testing
was conducted to demonstrate that the VIMS could provide acceptable depressurization
beneath the Building Y 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, three temporary fans were placed on the riser
stubs and activated. With these fans running, the pressure differential between the sub-
slab and the interior space directly above the monitoring point was measured. These
measurements were recorded at five locations (MP-12, 14, 15, 16 and 18, 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). The results of the testing
conducted on June 9, 2023 are summarized in Table 1 and show differential pressures
ranging from -97.6 pa to -127.4 pa. These results indicate that the design goal was
achieved at all five monitoring points.

3.0 PRE-OCCUPANCY ANALYTICAL TESTING

The objective of this testing was to provide pre-occupancy data from Buildings P, T, U and
Y 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 volatile organic compounds by EPA Method TO-15.

The evaluation included collection of ten 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 June 6, 2023, Mid-Atlantic conducted site reconnaissance to identify potential sources
(materials and activities) of indoor air VOC contaminants inside relevant portions of
Buildings P, T, U and Y. 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 sprinkler riser room (MP-10) and
storage room (MP-11). Minor painting and finishing associated with typical construction
activities had been performed throughout the buildings. Diesel and gasoline-powered
equipment was located in the areas immediately surrounding these buildings and
throughout Building P. Building Y is the only building with ground floor conditioned space.
The HVAC system for Building Y was not operational at the time of sampling.

On June 10-11, 2023, Mid-Atlantic mobilized to the site to collect ten indoor air samples
(IA-5, 9, 10, 11, 12, 13, 15, 16, 17 and 18) and one duplicate sample (IA-DUP, a duplicate
of IA-12) (Appendix C). These sample locations along with the location of one outdoor
(ambient) air sample (OA) 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.
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. 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 Waypoint Analytical Laboratory in
Charlotte, North Carolina 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 June 14, 2023, to collect ten sub-slab soil gas samples
(MP-5, 9, 10, 11, 12, 13, 15, 16, 17 and 18) and one duplicate sample MP-Duplicate, a
duplicate of MP-12 (Appendix C). These sample locations are summarized in Table 2 and
shown in Figure 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-5
13.4 % (134,000 ppm) 0 ppm
MP-9 12.1 % (121,000 ppm)0 ppm
MP-10 10.8 % (108,000 ppm)0 ppm
MP-11 13.6 % (136,000 ppm)0ppm
MP-12 & Duplicate 15.1 % (151,000 ppm) 0 ppm
MP-13 12.3 % (123,000 ppm)50 ppm
MP-15 14.2 % (142,000 ppm)75 ppm
MP-16 14.3 % (143,000 ppm) 0 ppm
MP-17 19.8 % (198,000 ppm) 0 ppm
MP-18 11.6 % (116,000 ppm)0 ppm
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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
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. The
canisters were left open over an approximately five-minute period and closed once a
vacuum of 5” Hg was achieved except for sample MP-9. For this sample, the end vacuum
was 3.5” hg. The Duplicate sample was collected contemporaneously with the primary
sample through use of a T-fitting.
Upon collection, the soil gas samples were shipped to Waypoint 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 P is for parking
and Buildings T, U and Y are commercial offices. Thus, sample results were compared to
the NCDEQ Division of Waste Management (DWM) January 2023 Non-Residential Indoor
Air Screening Levels (IASLs) and Soil Gas Screening Levels (SGSLs). However,
Residential IASLs and SGSLs are included in tables and risk assessment for reference.
Building W, currently still under construction and therefore not included in this report, is the
only residential use building in the NHX redevelopment.

4.1 Indoor Air Sampling Results

Indoor air sample results are summarized in Table 3. During the sampling event conducted
on June 10-11, 2023, four compounds were detected at concentrations exceeding Non-
Residential IASLs. Of the four compounds, three are petroleum-related: ethylbenzene,
naphthalene and xylenes; one is chlorinated: trans-1,2-dichloroethylene. 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 not detected above its method detection limit (MDL) in any
of the indoor air samples collected throughout the buildings.
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The outdoor ambient air sample OA showed detections of 17 compounds. Both petroleum
and chlorinated solvent-related compounds were detected but no detected concentration
was above the Non-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 June 14, 2023, one compound, chloroform, was detected at concentrations
exceeding its Non-Residential SGSL in two samples. Chloroform is commonly present in
municipal water supplies. TCE was detected in three sub-slab soil gas samples with an
estimated maximum concentration of 1.78J micrograms per cubic meter (ug/m3)
(approximately 1/100 of the Non-Residential SGSL for TCE).

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, five EUs
were identified in the buildings (EU-1 through EU-5). 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 Elevator Lobby for
Buildings T and U IA-5 MP-5
EU-2 Electrical Room
Building P IA-9 MP-9
EU-3 Southern Storage Room
Building P IA-10 MP-10
EU-4 Sprinkler Room
Building P IA-11 MP-11
EU-5 Operations Support and
Elevators, Building Y
IA-12, IA-13, IA-15
thru IA-18; IA-DUP
MP-12, MP-13, MP-15
thru MP-18; MP-Duplicate

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

1 NCDEQ Technical Guidance for Risk-Based Environmental Remediation of Sites. March 2017. Page 40
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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.

To evaluate risk in each EU, the following data was entered into the Risk Calculator to
produce each output:

1. The highest concentration of each compound detected in indoor air above MDLs was
entered into the Risk Calculator.
2. These concentrations were then compared to those detected in the corresponding
soil gas sample(s). If a compound was detected at a greater concentration in the
indoor air than in the corresponding soil gas sample(s), thus indicating an indoor
source, then the concentration detected in the soil gas was used in the risk calculation
in lieu of the concentration detected in the indoor air.
3. For compounds not detected in indoor air but with MDLs above Residential IASLs, if
the compound was not detected in the corresponding paired soil gas sample(s), then
the compound was assumed not to be present in indoor air and was excluded from
the risk calculation. If the compound was detected in the corresponding paired soil
gas sample(s), then a concentration equal to the MDL from laboratory analysis of the
indoor air sample was entered into the risk calculation.

Risk calculations for each EU are included in Appendix F. A summary of risk assessment
parameters and the cumulative Residential and Non-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 for Buildings T and U

In EU-1, one compound, ethylbenzene, was detected at a concentration exceeding its Non-
Residential IASL. Ethylbenzene was detected in indoor air at a concentration (7.38 µg/m3)
approximately 4.6 times greater than that detected in soil gas (1.6J µg/m3). This indicates
that ethylbenzene detected in indoor air in EU-1 is attributable to an indoor air source and
not to vapor intrusion from beneath the building. Seven other compounds- 2-butanone
(MEK), chloromethane, trans-1,2-dichloroethylene, styrene, 1,2,4- trimethylbenzene, 1,3,5-
trimethylbenzene and xylenes were also detected at lower concentrations in soil gas than in
indoor air.

Six compounds- benzyl chloride, bromodichloromethane, 1,3-butadiene,
hexachlorobutadiene, 1,1,2,2-tetrachloroethane, and 1,1,2-trichloroethane- had MDLs
above Residential IASLs but were not detected in soil gas; therefore, they were excluded
from the risk calculation. 1,2-dichloroethane had an MDL above its Residential IASL and
was detected in soil gas; therefore, a concentration equal to its MDL from laboratory analysis
of the indoor air samples (0.129 µg/m3) was entered into the risk calculation.
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Indoor Air Risk Calculations
Exposure Unit Residential Calculated
Carcinogenic Risk Sum
Residential Cumulative Non-
Carcinogenic Hazard Index
EU-1
8.1E-06 3.9E-01
Non-Residential Calculated
Carcinogenic Risk Sum
Non-Residential Cumulative Non-
Carcinogenic Hazard Index
1.9E-06 9.3E-02

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 or Non-Residential exposure scenario.

Exposure Unit 2, Electrical Room in Building P

In EU-2, naphthalene was the only compound detected at a concentration (5.12 ug/m3)
exceeding its Non-Residential IASL. Naphthalene was detected at a similar concentration
in the paired soil gas sample (5.44 ug/m3). Eight compounds- acetone, MEK,
chloromethane, isopropanol, 4-methyl-2-pentanone (MIBK), methylene chloride, styrene,
tetrahydrofuran and toluene- were detected at lower concentrations in soil gas than in indoor
air. Seven compounds- benzyl chloride, bromodichloromethane, 1,3-Butadiene, 1,2-
dichloroethane, hexachlorobutadiene, 1,1,2,2-tetrachloroethane, and 1,1,2-trichloroethane-
had MDLs above Residential IASLs but were not detected in soil gas; therefore, they were
excluded from the risk calculation.

Indoor Air Risk Calculations
Exposure Unit Residential Calculated
Carcinogenic Risk Sum
Residential Cumulative Non-
Carcinogenic Hazard Index
EU-2
6.6E-05 1.9E+00
Non-Residential Calculated
Carcinogenic Risk Sum
Non-Residential Cumulative Non-
Carcinogenic Hazard Index
1.5E-05 4.5E-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 Non-Residential exposure scenario. The hazard index
target of 1 was exceeded for the Residential exposure scenario.

Exposure Unit 3, Southern Storage in Building P

In EU-3, ethylbenzene was detected in indoor air at a concentration (7.29 µg/m3) exceeding
its Non-Residential IASL. It was detected in indoor air at a concentration approximately
seven times greater than that detected in soil gas (1.04J µg/m3). This indicates that the
concentration of ethylbenzene detected in indoor air in EU-3 is attributable to an indoor air
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source and not to vapor intrusion from beneath the building. Twelve other compounds-
acetone, benzene, MEK, carbon disulfide, 4-ethytoluene, styrene, tetrahydrofuran, toluene,
trichlorofluoromethane, 1,2,4-trimethylbenzene, 1,3,5-trimethylbenzene and xylenes- were
detected at lower concentrations in soil gas than in indoor air. Seven compounds- benzyl
chloride, bromodichloromethane, 1,3-Butadiene, 1,2-dichloroethane, hexachlorobutadiene,
1,1,2,2-tetrachloroethane, and 1,1,2-trichloroethane- had MDLs above Residential IASLs
but were not detected in soil gas; therefore, they were excluded from the risk calculation.

Indoor Air Risk Calculations
Exposure Unit Residential Calculated
Carcinogenic Risk Sum
Residential Cumulative Non-
Carcinogenic Hazard Index
EU-3
4.7E-06 2.7E-01
Non-Residential Calculated
Carcinogenic Risk Sum
Non-Residential Cumulative Non-
Carcinogenic Hazard Index
1.1E-06 6.4E-02

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 or Non-Residential exposure scenario.

Exposure Unit 4, Sprinkler Room in Building P

In EU-4, there were no compounds detected at a concentration exceeding Non-Residential
IASLs. Styrene was the only compound detected at lower concentrations in soil gas than in
indoor air. Seven compounds- benzyl chloride, bromodichloromethane, 1,3-Butadiene, 1,2-
dichloroethane, hexachlorobutadiene, 1,1,2,2-tetrachloroethane, and 1,1,2-trichloroethane-
had MDLs above Residential IASLs but were not detected in soil gas; therefore, they were
excluded from the risk calculation.

Indoor Air Risk Calculations
Exposure Unit Residential Calculated
Carcinogenic Risk Sum
Residential Cumulative Non-
Carcinogenic Hazard Index
EU-4
5E-06 2.5E-01
Non-Residential Calculated
Carcinogenic Risk Sum
Non-Residential Cumulative Non-
Carcinogenic Hazard Index
1.1E-6 5.9E-02

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 or Non-Residential exposure scenario.

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Exposure Unit 5, Operations Support, Elevators for Building Y

In EU-5, trans-1,2-dichloroethylene, ethylbenzene and xylenes were detected at
concentrations exceeding their respective Non-Residential IASLs. For each of these
compounds, the average (of five samples) sub-slab soil gas concentrations were lower than
the average (of five samples) indoor air concentration in this EU. These data suggest there
is an indoor air source for these compounds. These compounds are common in construction
materials, cleanup chemicals and fuel for construction equipment. Eleven other compounds-
MEK, chlorobenzene, chloromethane, 1,3-dichlorobenzene, 4-ethyltoluene, isopropanol,
MIBK, propene, tetrahydrofuran, toluene and 1,2,4-trimethylbenzene- were detected at
lower concentrations in soil gas than in indoor air. Seven compounds- benzyl chloride,
bromodichloromethane, 1,3-Butadiene, 1,2-dichloroethane, hexachlorobutadiene, 1,1,2,2-
tetrachloroethane, and 1,1,2-trichloroethane- had MDLs above Residential IASLs but were
not detected in soil gas; therefore, they were excluded from the risk calculation.
Indoor Air Risk Calculations
Exposure Unit Residential Calculated
Carcinogenic Risk Sum
Residential Cumulative Non-
Carcinogenic Hazard Index
EU-5
7.8E-06 6.2E-01
Non-Residential Calculated
Carcinogenic Risk Sum
Non-Residential Cumulative Non-
Carcinogenic Hazard Index
1.8E-06 1.5E-01
As indicated, the cancer risk sum and cumulative non-cancer hazard index for the indoor air
sample in EU-5 did not exceed the target risk sum of 1.0E-4 nor the target cumulative non-
cancer hazard index of 1 for the Residential or Non-Residential exposure scenario.

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).

Post-Construction/Pre-Occupancy VIMS Report August 9, 2023
NHX-Buildings P, T, U and Y Page 12
Raleigh, North Carolina
Brownfields Project Number 25008-21-092

6.0 SUMMARY AND CONCLUSIONS

The overall objective of this assessment was to provide indoor air and soil gas data from
Buildings P, T, U and Y of the NHX redevelopment to evaluate if vapor intrusion is
occurring at a rate which could pose unacceptable risk to building occupants. Mid-Atlantic
offers the following summary of assessment activities and results:

 A total of ten 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 P, T, U and Y;
 Four compounds were detected in various indoor air samples at concentrations
exceeding their respective Non-Residential IASLs. Each of these compounds was
detected in indoor air at concentrations greater than those observed in soil gas
indicating indoor air source contributions;
 One compound- chloroform- was detected in soil gas at concentrations exceeding
its SGSLs. Chloroform is a compound commonly found in municipal water
supplies;
 TCE, a contaminant of particular concern due to the potential for adverse health
effects in sensitive populations following short-term exposure, was not detected
above its MDL (0.199 ug/m3) in any indoor air sample;
 TCE was detected in three of the 11 soil gas samples collected at concentrations
ranging from 0.666J to 1.78J ug/m3, which is approximately two orders of
magnitude below the Non-Residential SGSL of 180 ug/m3;
 Risk evaluations were performed on five EUs throughout Buildings P, T, U and Y
(EU-1 through EU-5), each isolated and conditioned separately from adjacent and
surrounding spaces;
 Risk calculations using indoor air and/or soil gas data from each EU identified
acceptable exposure risk under Non-Residential use scenarios in all five EUs and
acceptable risk in 4 of the 5 EUs for the Residential scenario (electrical room in
Building P was the exception); 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:

 Occupancy Buildings P, T, U and Y for non-residential use does not pose
unacceptable risk and is protective of public health.

FIGURES
´
TOPOGRAPHIC SITE MAPJC PENNY NORTH HILLS REDEVELOPMENTLASSITER MILL ROADRALEIGH, NORTH CAROLINA
DRAWN BY:
DATE:
ENG. CHECK:
JOB NO:
APPROVAL:
DRAFTCHECK:GIS NO:
DWG NO:
REFERENCES:
SCALE:
JULY 2023
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
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TABLES

Monitoring Point Vacuum Reading (pascals, pa)
MP-12 -101.9
MP-14 -97.6
MP-15 -100.1
MP-16 -116.2
MP-18 -127.4
TABLE 1
SUB-SLAB DEPRESSURIZATION INFLUENCE RESULTS
NORTH HILLS EXPANSION
RALEIGH, NORTH CAROLINA
MID-ATLANTIC JOB NO. R3746.02
DescriptionIndoor Air Samples Sub-Slab Monitoring PointsElevator Lobby for Buildings T and UIA-5MP-5Electrical Room, Building PIA-9MP-9Southern Storage Room, Building PIA-10MP-10Sprinkler Room Building PIA-11MP-11Operations Support and Elevators, Building YIA-12, IA-13, IA-15 thru IA-18; IA-DUPMP-12, MP-13, MP-15 thru MP-18; MP-DUPTABLE 2MONITORING POINT AND INDOOR AIR SAMPLE SUMMARYNORTH HILLS EXPANSIONRALEIGH, NORTH CAROLINAMID-ATLANTIC JOB NO. R3746.02
Exposure Unit ID EU 1 EU 2 EU 3 EU 4
Sampling Date 6/10/2023 6/10/2023 6/10/2023 6/10/2023 6/10/2023 6/10/2023 6/10/2023 6/10/2023 6/10/2023 6/10/2023 6/10/2023 6/10/2023
Acetone 51.6 63.1 2,820 22.9 71.7 68.2 44.4 56.5 72.5 51.2 106 15.3 NE NE
Benzene 1.15 J 1.06 J 0.683 J 0.680 J 0.776 J 0.773 J 0.635 J 0.827 J 0.824 J 0.581 J 0.859 J 0.859 J 0.36 1.6
Benzyl Chloride*<0.147 <0.147 <0.147 <0.147 <0.147 <0.147 <0.147 <0.147 <0.147 <0.147 <0.147 <0.147 0.057 0.25
Bromodichloromethane*<0.150 <0.150 <0.150 <0.150 <0.150 <0.150 <0.150 <0.150 <0.150 <0.150 <0.150 <0.150 0.076 0.33
Bromoform <0.153 <0.153 <0.153 <0.153 <0.153 <0.153 <0.153 <0.153 <0.153 <0.153 <0.153 <0.153 2.6 11
Bromomethane <0.115 <0.115 <0.115 <0.115 <0.115 <0.115 <0.115 <0.115 <0.115 <0.115 <0.115 <0.115 1.0 4.4
1,3-Butadiene*<0.328 <0.328 <0.328 <0.328 <0.328 <0.328 <0.328 <0.328 <0.328 <0.328 <0.328 <0.328 0.094 0.41
2-Butanone (MEK)232 56.8 58.1 J 3.01 13.0 12.9 15.2 20.0 23.2 15.9 34.5 1.75 1,000 4,400
Carbon Disulfide <0.060 <0.060 3.36 J <0.060 <0.060 <0.060 <0.060 0.292 J <0.060 <0.060 <0.060 <0.060 150 610
Carbon Tetrachloride <0.155 <0.155 <0.155 <0.155 <0.155 0.566 J <0.155 <0.155 <0.155 <0.155 <0.155 <0.155 0.47 2.0
Chlorobenzene <0.107 <0.107 <0.107 <0.107 <0.107 <0.107 <0.107 0.497 J <0.107 <0.107 <0.107 <0.107 10 44
Chloroethane <0.164 <0.164 <0.164 <0.164 <0.164 <0.164 <0.164 <0.164 <0.164 <0.164 <0.164 <0.164 830 3,500
Chloroform <0.086 <0.086 <0.086 <0.086 <0.086 <0.086 <0.086 <0.086 <0.086 <0.086 <0.086 <0.086 0.12 0.53
Chloromethane 0.918 J 0.918 J 0.644 J 0.842 J 0.997 J 0.980 J 0.920 J <0.067 0.910 J 0.904 J 0.949 J 0.916 J 19 79
Cyclohexane <0.161 <0.161 306 <0.161 <0.161 3.00 J <0.161 <0.161 2.95 J <0.161 <0.161 <0.161 1,300 5,300
Dibromochloromethane <0.208 <0.208 <0.208 <0.208 <0.208 <0.208 <0.208 <0.208 <0.208 <0.208 <0.208 <0.208 NE NE
1,2-Dibromoethane (EDB)*<0.151 <0.151 <0.151 <0.151 <0.151 <0.151 <0.151 <0.151 <0.151 <0.151 <0.151 <0.151 0.0047 0.02
1,2-Dichlorobenzene <0.096 <0.096 <0.096 <0.096 <0.096 <0.096 <0.096 <0.096 <0.096 <0.096 <0.096 <0.096 42 180
1,3-Dichlorobenzene <0.174 <0.174 <0.174 <0.174 3.36 J 3.37 J 0.763 J 1.77 J 2.37 J 3.35 J <0.174 <0.174 NE NE
1,4-Dichlorobenzene <0.186 <0.186 <0.186 <0.186 <0.186 <0.186 <0.186 <0.186 <0.186 <0.186 <0.186 <0.186 0.26 1.1
Dichlorodifluoromethane (Freon
12)2.78 2.82 2.10 J 2.88 2.94 2.86 2.84 3.02 2.86 2.90 2.87 2.89 21 88
1,1-Dichloroethane <0.101 <0.101 <0.101 <0.101 <0.101 <0.101 <0.101 <0.101 <0.101 <0.101 <0.101 <0.101 1.8 7.7
1,2-Dichloroethane*<0.129 <0.129 <0.129 <0.129 <0.129 <0.129 <0.129 <0.129 <0.129 <0.129 <0.129 <0.129 0.11 0.47
1,1-Dichloroethylene <0.107 <0.107 <0.107 <0.107 <0.107 <0.107 <0.107 <0.107 <0.107 <0.107 <0.107 <0.107 42 180
cis-1,2-Dichloroethylene <0.095 <0.095 <0.095 <0.095 <0.095 <0.095 <0.095 <0.095 <0.095 <0.095 <0.095 <0.095 8.3 35
trans-1,2-Dichloroethylene 10.8 <0.108 <0.108 <0.108 85.8 85.2 1.20 J 5.74 33.9 4.19 4.22 0.547 J 8.3 35
1,2-Dichloropropane <0.205 <0.205 <0.205 <0.205 <0.205 <0.205 <0.205 <0.205 <0.205 <0.205 <0.205 <0.205 0.76 3.3
1,2-Dichloro-1,1,2,2-
tetrafluoroethane (Freon 114)<0.622 <0.622 <0.622 <0.622 <0.622 <0.622 <0.622 <0.622 <0.622 <0.622 <0.622 <0.622 NE NE
cis-1,3-Dichloropropene <0.178 <0.178 <0.178 <0.178 <0.178 <0.178 <0.178 <0.178 <0.178 <0.178 <0.178 <0.178 NE NE
trans-1,3-Dichloropropene <0.178 <0.178 <0.178 <0.178 <0.178 <0.178 <0.178 <0.178 <0.178 <0.178 <0.178 <0.178 NE NE
1,4-Dioxane <0.435 <0.435 <0.435 <0.435 <0.435 <0.435 <0.435 <0.435 <0.435 <0.435 <0.435 <0.435 0.56 2.5
Ethyl Acetate <0.136 0.645 J <0.136 <0.136 <0.136 <0.136 <0.136 0.677 J 0.918 J <0.136 2.76 <0.136 15 61
Ethylbenzene 7.38 1.16 J 7.29 0.976 J 2.28 2.21 1.26 J 4.45 4.45 3.04 38.3 0.316 J 1.1 4.9
4-Ethyltoluene 0.737 J 0.521 J 1.62 J <0.128 0.752 J 0.722 J 0.624 J 4.04 1.46 J 0.894 J 2.57 <0.128 NE NE
1,1,2-Trichloro-1,2,2-
trifluoroethane (Freon 113)<0.561 0.590 J <0.561 0.567 J 0.613 J 0.613 J 0.590 J 0.567 J 0.620 J 0.597 J 0.582 J 0.597 J 1,000 4,400
Heptane 1.38 J 0.672 J 1.76 J 0.405 J 3.50 3.33 0.938 J 2.23 2.75 1.09 J 1.88 J 0.344 J 83 350
Hexachlorobutadiene*<0.330 <0.330 <0.330 <0.330 <0.330 <0.330 <0.330 <0.330 <0.330 <0.330 <0.330 <0.330 0.13 0.56
Hexane 1.07 J <0.047 <0.047 0.609 J 2.32 0.722 J 0.574 J 0.884 J 0.944 J 0.951 J 2.02 0.595 J 150 610
2-Hexanone (MBK)<0.285 <0.285 <0.285 <0.285 <0.285 <0.285 <0.285 <0.285 <0.285 <0.285 <0.285 <0.285 6.3 26
Isopropanol 2.47 JB 4.00 JB <0.139 2.77 JB 3.07 JB 3.09 JB 3.13 JB 3.27 JB 5.07 2.91 JB 5.13 B 1.78 JB 42 180
Methyl tert-Butyl Ether (MTBE)<0.033 <0.033 <0.033 <0.033 <0.033 <0.033 <0.033 <0.033 <0.033 <0.033 <0.033 <0.033 11 47
4-Methyl-2-pentanone (MIBK) 0.528 J 1.82 J 0.323 J 1.17 J 13.4 13.4 8.19 16.3 22.7 22.1 114 <0.121 630 2,600
Methylene Chloride 1.58 J 0.871 J 0.944 J 0.937 J 3.11 2.91 3.85 4.67 4.73 1.29 J 1.38 J 1.09 J 100 530
Naphthalene*<0.183 5.12 <0.183 <0.183 <0.183 <0.183 <0.183 <0.183 <0.183 <0.183 <0.183 <0.183 0.083 0.36
Propene <0.242 <0.242 <0.242 <0.242 <0.242 <0.242 <0.242 <0.242 <0.242 <0.242 4.46 1.05 630 2,600
Styrene 6.19 52.3 6.38 2.96 3.82 3.78 3.49 5.40 4.35 3.48 4.61 <0.124 210 880
1,1,2,2-Tetrachloroethane*<0.104 <0.104 <0.104 <0.104 <0.104 <0.104 <0.104 <0.104 <0.104 <0.104 <0.104 <0.104 0.048 0.21
Tetrachloroethylene 0.786 J <0.181 <0.181 <0.181 <0.181 0.861 J 1.29 J <0.181 <0.181 4.25 <0.181 2.25 J 8.3 35
Tetrahydrofuran 1.43 J 133 271 0.645 J 13.5 13.1 1.44 J 7.48 9.68 3.62 11.9 0.787 J 420 1,800
Toluene 10.5 19.8 1,240 4.83 11.5 8.80 7.08 17.2 15.5 11.5 50.6 2.55 B 1,000 4,400
1,2,4-Trichlorobenzene <0.209 <0.209 <0.209 <0.209 <0.209 <0.209 <0.209 <0.209 <0.209 <0.209 <0.209 <0.209 0.42 1.8
1,1,1-Trichloroethane <0.144 <0.144 <0.144 <0.144 <0.144 <0.144 <0.144 <0.144 <0.144 <0.144 <0.144 <0.144 1,000 4,400
1,1,2-Trichloroethane*<0.087 <0.087 <0.087 <0.087 <0.087 <0.087 <0.087 <0.087 <0.087 <0.087 <0.087 <0.087 0.042 0.18
Trichloroethylene <0.199 <0.199 <0.199 <0.199 <0.199 <0.199 <0.199 <0.199 <0.199 <0.199 <0.199 <0.199 0.42 1.8
Trichlorofluoromethane (Freon 11) 1.62 J 1.62 J 1.34 J 1.66 J 1.60 J 1.61 J 1.53 J 1.93 J 1.65 J 1.65 J 1.60 J 1.62 J NE NE
1,2,4-Trimethylbenzene 5.80 4.17 9.89 3.38 5.09 5.01 4.55 14.8 6.66 5.55 10.2 <0.110 13 53
1,3,5-Trimethylbenzene 1.30 J 0.584 J 3.07 <0.236 1.07 J 0.983 J 0.830 J 5.39 1.77 J 1.24 J 3.42 <0.236 13 53
Vinyl Acetate <0.224 <0.224 <0.224 <0.224 <0.224 <0.224 <0.224 <0.224 <0.224 <0.224 <0.224 <0.224 42 180
Vinyl Chloride <0.127 <0.127 <0.127 <0.127 <0.127 <0.127 <0.127 <0.127 <0.127 <0.127 <0.127 <0.127 0.17 2.8
Xylene (Total)43.8 7.71 J 39.7 5.85 J 12.6 12.4 8.51 J 25.2 22.9 16.3 148 3.46 J 21 88
Notes:
Concentration units: µg/m3
J = Estimated Concentration
B = Analyte detected in blank.
NE = Not Established
* = Compound was not detected, but had a lab method detection limit (MDL) over the Residential Indoor Air Screening Level.
Bolded concentrations exceed the Residential Indoor Air Screening Level
Shaded concentrations exceed the Non-Residential Indoor Air Screening Level
<0.34 = Not detected above the lab method detection limit
NCDEQ DWM = North Carolina Department of Environmental Quality Division of Waste Management
Sample ID
NCDEQ DWM Residential Indoor AirScreening Levels
January 2023 (ug/m3)
NCDEQ DWM Non-Residential Indoor AirScreening Levels
January 2023 (ug/m3)
TABLE 3
CHEMICAL CONSTITUENTS ANALYZED IN INDOOR AIR
NORTH HILLS EXPANSION
RALEIGH, NORTH CAROLINA
MID-ATLANTIC JOB NO. R3746.02
IA-5 IA-9 IA-10 IA-11 IA-12 IA-13 IA-15 IA-16 IA-17 IA-18
IA-DUP(IA-12)
EU 5
OA
Exposure Unit ID EU 1 EU 2 EU 3 EU 4
Sampling Date 6/14/2023 6/14/2023 6/14/2023 6/14/2023 6/14/2023 6/14/2023 6/14/2023 6/14/2023 6/14/2023 6/14/2023 6/14/2023
Acetone 2,350 47.2 54.6 107 123 333 18.4 29.0 10.1 12.7 11.2 NE NE
Benzene 1.53 J 1.14 J 0.565 J 11.9 0.645 J 0.511 J 0.993 J 0.827 J 0.370 J 0.501 J 0.769 J 12 160
Benzyl Chloride <0.147 <0.147 <0.147 <0.147 <0.147 <0.147 <0.147 <0.147 <0.147 <0.147 <0.147 1.9 25
Bromodichloromethane <0.150 <0.150 <0.150 <0.150 <0.150 <0.150 <0.150 <0.150 <0.150 <0.150 <0.150 2.5 33
Bromoform <0.153 <0.153 <0.153 <0.153 <0.153 <0.153 <0.153 <0.153 <0.153 <0.153 <0.153 85 1,100
Bromomethane <0.115 <0.115 <0.115 <0.115 <0.115 <0.115 <0.115 <0.115 <0.115 <0.115 <0.115 35 440
1,3-Butadiene <0.328 <0.328 <0.328 <0.328 <0.328 <0.328 <0.328 <0.328 <0.328 <0.328 <0.328 3.1 41
2-Butanone (MEK)19.3 3.02 6.66 7.35 2.58 2.24 2.12 3.61 1.52 1.66 1.70 35,000 440,000
Carbon Disulfide 4.11 J 4.10 J 2.61 J 10.3 3.31 J 4.35 J 2.80 J 0.610 J 1.36 J 1.39 J 3.50 J 4,900 61,000
Carbon Tetrachloride <0.155 <0.155 <0.155 0.949 J <0.155 <0.155 0.673 J <0.155 <0.155 <0.155 <0.155 16 200
Chlorobenzene <0.107 <0.107 <0.107 <0.107 <0.107 <0.107 <0.107 <0.107 <0.107 <0.107 <0.107 350 4,400
Chloroethane <0.164 <0.164 <0.164 <0.164 <0.164 <0.164 <0.164 <0.164 <0.164 <0.164 <0.164 28,000 350,000
Chloroform 72.8 13.0 36.9 352 10.7 14.4 30.7 <0.086 8.04 6.41 22.3 4.1 53
Chloromethane <0.067 <0.067 <0.067 3.23 <0.067 <0.067 <0.067 <0.067 <0.067 <0.067 <0.067 630 7,900
Cyclohexane <0.161 <0.161 <0.161 <0.161 <0.161 <0.161 4.77 <0.161 <0.161 <0.161 3.19 J 42,000 530,000
Dibromochloromethane <0.208 <0.208 <0.208 <0.208 <0.208 <0.208 <0.208 <0.208 <0.208 <0.208 <0.208 NE NE
1,2-Dibromoethane (EDB)<0.151 <0.151 <0.151 <0.151 <0.151 <0.151 <0.151 <0.151 <0.151 <0.151 <0.151 0.16 2
1,2-Dichlorobenzene <0.096 <0.096 <0.096 <0.096 <0.096 <0.096 <0.096 <0.096 <0.096 <0.096 <0.096 1,400 18,000
1,3-Dichlorobenzene 0.631 J <0.174 <0.174 <0.174 <0.174 <0.174 <0.174 <0.174 <0.174 <0.174 <0.174 NE NE
1,4-Dichlorobenzene <0.186 <0.186 <0.186 <0.186 <0.186 <0.186 <0.186 <0.186 <0.186 <0.186 <0.186 8.5 110
Dichlorodifluoromethane (Freon
12)3.32 3.18 3.38 3.22 4.00 3.11 3.16 3.15 3.19 3.24 3.67 700 8,800
1,1-Dichloroethane <0.101 <0.101 <0.101 <0.101 <0.101 <0.101 <0.101 <0.101 <0.101 <0.101 <0.101 58 770
1,2-Dichloroethane 0.918 J <0.129 <0.129 <0.129 <0.129 <0.129 <0.129 <0.129 <0.129 <0.129 <0.129 3.6 47
1,1-Dichloroethylene <0.107 <0.107 <0.107 <0.107 <0.107 <0.107 <0.107 <0.107 <0.107 <0.107 <0.107 1,400 18,000
cis-1,2-Dichloroethylene <0.095 <0.095 <0.095 <0.095 <0.095 <0.095 <0.095 <0.095 <0.095 <0.095 <0.095 280 3,500
trans-1,2-Dichloroethylene <0.108 <0.108 <0.108 <0.108 3.01 <0.108 0.745 J 4.35 3.65 <0.108 <0.108 280 3,500
1,2-Dichloropropane 38.5 8.00 <0.205 63.6 <0.205 <0.205 2.65 <0.205 2.01 J <0.205 4.38 25 330
cis-1,3-Dichloropropene <0.178 <0.178 <0.178 <0.178 <0.178 <0.178 <0.178 <0.178 <0.178 <0.178 <0.178 NE NE
trans-1,3-Dichloropropene <0.178 <0.178 <0.178 <0.178 <0.178 <0.178 <0.178 <0.178 <0.178 <0.178 <0.178 NE NE
1,2-Dichloro-1,1,2,2-
tetrafluoroethane (Freon 114)<0.622 <0.622 <0.622 <0.622 <0.622 <0.622 <0.622 <0.622 <0.622 <0.622 <0.622 NE NE
1,4-Dioxane <0.435 <0.435 <0.435 <0.435 <0.435 <0.435 <0.435 <0.435 <0.435 <0.435 <0.435 19 250
Ethyl Acetate 2.33 1.45 J 1.65 J 2.06 2.90 1.72 J 1.92 2.24 2.32 2.33 1.83 490 6,100
Ethylbenzene 1.60 J 1.40 J 1.04 J 1.87 J 1.19 J 1.11 J 1.24 J 1.61 J 1.46 J 1.58 J 1.77 J 37 490
4-Ethyltoluene 0.934 J 1.27 J 0.634 J 0.830 J 0.643 J 0.727 J 0.683 J 0.973 J 0.840 J 0.904 J 0.934 J NE NE
Heptane 14.0 25.7 35.8 89.2 45.9 196 2.56 1.50 J 0.782 J 0.795 J 0.881 J 2,800 35,000
Hexachlorobutadiene <0.330 <0.330 <0.330 <0.330 <0.330 <0.330 <0.330 <0.330 <0.330 <0.330 <0.330 4.3 56
Hexane 1.92 2.83 7.23 3.37 <0.047 2.34 0.807 J 1.09 J 0.838 J 0.683 J 1.48 J 4,900 61,000
2-Hexanone (MBK)3.82 <0.285 <0.285 <0.285 <0.285 <0.285 0.557 J 0.929 J <0.285 <0.285 <0.285 210 2,600
Isopropanol 67.6 27.6 41.3 12.7 78.9 34.5 32.3 37.7 39.0 31.2 27.5 1,400 18,000
Methyl tert-Butyl Ether (MTBE) 6.58 <0.033 <0.033 8.25 <0.033 <0.033 <0.033 <0.033 <0.033 <0.033 <0.033 360 4,700
4-Methyl-2-pentanone (MIBK) 3.96 0.823 J 0.651 J 1.23 J 0.790 J 1.12 J 0.524 J 0.589 J <0.121 0.745 J 0.528 J 21,000 260,000
Methylene Chloride 4.93 <0.488 1.48 J 4.53 8.33 1.59 J 1.89 5.86 1.89 1.59 J 1.63 J 3,400 53,000
Naphthalene 5.37 5.44 5.35 5.21 5.18 5.28 5.52 6.97 5.27 5.75 5.34 2.8 36
Propene 49.0 19.4 <0.242 32.4 <0.242 <0.242 <0.242 <0.242 <0.242 <0.242 <0.242 21,000 260,000
Styrene 3.45 4.01 <0.124 <0.124 <0.124 <0.124 <0.124 3.55 3.14 3.14 3.18 7,000 88,000
1,1,2,2-Tetrachloroethane <0.104 <0.104 <0.104 <0.104 <0.104 <0.104 <0.104 <0.104 <0.104 <0.104 <0.104 1.6 21
Tetrachloroethylene 106 24.6 362 112 20.5 32.3 153 12.8 31.3 252 1,450 280 3,500
Tetrahydrofuran 2.53 4.62 25.5 32.2 1.82 1.88 1.77 3.58 <0.107 1.64 1.88 14,000 180,000
Toluene 14.1 16.3 26.0 15.4 3.62 3.79 4.89 7.15 4.54 4.37 5.55 35,000 440,000
1,2,4-Trichlorobenzene <0.209 <0.209 <0.209 <0.209 <0.209 <0.209 <0.209 <0.209 <0.209 <0.209 <0.209 14 180
1,1,1-Trichloroethane 0.785 J <0.144 <0.144 <0.144 <0.144 <0.144 <0.144 <0.144 <0.144 <0.144 <0.144 35,000 440,000
1,1,2-Trichloroethane <0.087 <0.087 <0.087 <0.087 <0.087 <0.087 <0.087 <0.087 <0.087 <0.087 <0.087 1.4 18
Trichloroethylene 1.02 J <0.199 0.666 J <0.199 <0.199 <0.199 <0.199 <0.199 <0.199 <0.199 1.78 J 14 180
Trichlorofluoromethane (Freon 11)1,830 623 399 83.5 55.8 67.8 179 3.03 70.6 160 420 NE NE
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)0.728 J 0.781 J 0.758 J 0.620 J 0.628 J 0.620 J 0.636 J <0.561 0.659 J 0.620 J 0.712 J 35,000 440,000
1,2,4-Trimethylbenzene 5.76 6.19 4.83 5.31 4.68 4.87 5.01 5.77 5.35 5.52 5.46 420 5,300
1,3,5-Trimethylbenzene 0.983 J 1.08 J 0.604 J 0.747 J 0.688 J 0.658 J 0.761 J 0.860 J 0.737 J 0.781 J 0.865 J 420 5,300
Vinyl Acetate <0.224 <0.224 <0.224 <0.224 <0.224 1.21 J <0.224 <0.224 <0.224 <0.224 1.17 J 1,400 18,000
Vinyl Chloride <0.127 <0.127 <0.127 <0.127 <0.127 <0.127 <0.127 <0.127 <0.127 <0.127 <0.127 5.6 280
m&p-Xylene 7.02 6.64 4.92 J 6.47 5.52 J 5.40 J 5.81 6.83 6.44 6.70 7.44 700 8,800
o-Xylene 2.54 2.04 J 1.51 J 2.29 1.73 J 1.72 J 1.77 J 2.44 2.09 J 2.27 2.39 700 8,800
Notes:
Concentration units: micrograms per cubic meter (µg/m3)
NCDEQ = North Carolina Department of Environmental Quality
DWM = Division of Waste Management
J = Estimated Concentration
NE = Not Established
Bolded concentrations exceed the Residential Soil Gas Level
Shaded concentrations exceed the Non-Residential Soil Gas Screening Level
<0.34 = Not detected above the lab method detection limit
Sample ID
NCDEQ DWM Residential Soil Gas
Screening Levels
January 2023
(µg/m3)
NCDEQ DWMNon-Residential Soil Gas
Screening Levels
January 2023
(µg/m3)
EU 5
TABLE 4
CHEMICAL CONSTITUENTS ANALYZED IN SOIL GAS
NORTH HILLS EXPANSION
RALEIGH, NORTH CAROLINA
MID-ATLANTIC JOB NO. R3746.02
MP-15 MP-16 MP-17 MP-18
MP-Duplicate(MP-12)MP-5 MP-10 MP-11 MP-12MP-9 MP-13
Assessment ParametersCancer HI Cancer HI Cancer HI Cancer HI Cancer HIUse Scenarios8.1E-06 3.9E-01 6.6E-051.9E+004.7E-06 2.7E-01 5.0E-06 2.5E-01 7.8E-06 6.2E-011.9E-06 9.3E-02 1.5E-05 4.5E-01 1.1E-06 6.4E-02 1.1E-06 5.9E-02 1.8E-06 1.5E-01To evaluate risk in each EU: 1. All compounds detected in indoor air were entered into the risk calculator.2.3.Bolded values exceed the maximum allowable cumulative cancer risk of 1.0E-04 for carcinogens or the maximum cumulative hazard index of 1 for non-carcinogens. If a compound was detected at a greater concentration in the indoor air than in the corresponding paired soil gas sample (thus indicating an indoor air contaminant source), the concentration detected in the soil gas was used in the risk calculation.Exposure Unit:Use Description:Sub-slab samples:Indoor Air Samples:ResidentialRisk Criterion:Southern Storage, Parking aboveSprinkler Riser room, Offices aboveBuilding Y Area, Commercial, Offices aboveEU-1EU-2EU-3EU-4EU-5TABLE 5PRE-OCCUPANCY SOIL GAS/INDOOR AIR TESTING RISK ASSESSMENT SUMMARYNORTH HILLS EXPANSIONRALEIGH, NORTH CAROLINAMID-ATLANTIC JOB NO. R3746.02For compounds not detected in indoor air but with MDLs above Residential Indoor Air Screening Levels, if the compound was not detected in the corresponding paired soil gas sample it was assumed not to be present in indoor air and was excluded from the risk calculation. If the compound was detected in the corresponding paired soil gas sample, then a concentration equal to the MDL from laboratory analysis of the indoor air sample was entered into the risk calculation.IA-5IA-9IA-10IA-11IA-12, IA-DUP (IA-12), IA-13, IA-15, IA-16, IA-17, IA-18Non-residentialMP-5MP-9MP-10MP-11MP-12, MP-Duplicate (MP-12), MP-13, MP-15, MP-16, MP-17, MP-18Building U/T Elevators and Lobby, Offices aboveElectrical room, Parking above

APPENDIX A

VIMS INSPECTION LOGS
VIMS Inspection
Project Info
Field Tech : Colton Gotshall Date : 2022-01-19
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
Photos/Notes

Notes : Building U/T Elevators and Lobby area. Only the elevator pits have been completed and finished with a vapor barrier.
Sign-Off
Signature

Page 1 of 1
VIMS Inspection Form
Project Info
Field Tech : Colton Gotshall Date : 2/18/2022
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 Yes
Membrane barrier Yes
Monitoring points N/A
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
Photos/Notes
Notes : Monoshield barrier laid down over sprinkler riser room. Seals passed smoke test. Monoshield barrier brought up sides of Building U/T Elevators and Lobby area. All
seals appear to be tight. UPDATE: MP-11 was installed post-slab.
Sign-Off
Signature
Page 1 of 1
VIMS Inspection Form
Project Info
Field Tech : Colton Gotshall Date : 4/21/2022
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 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
Photos/Notes

Page 1 of 2

Notes : Southern Storage area, on the south-central portion of the site, has had a vapor barrier laid down and smoke test passed. MP-10 has been installed.
Sign-Off
Signature
<-- End of Form -->

Page 2 of 2
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
Field Notes
Project Info
Field Tech: Colton Gotshall Date: 08/18/2022
Client: Aptus Project Name: JC Penney
North Hills Redevelopment
Images/Notes

Notes : On-site at 0930

Page 1 of 2
Removed rebar from MP-12 and MP-13 and installed monitoring pins. All monitoring points MP-12 - MP-18 successfully
located. The three solid PVC pipes protruding from the side of Building Y were exposed to the elements via no wooden board
on their tops to keep out rainwater. All three pipes had sediment washed into them. After two hours of digging, baseboards
were removed from the sides of the pipes and sediment removed from their interiors. The PVC pipe most to the north was
observed to be cracked/broken.
The fan was connected to the most southern protruding PVC pipe:
MP-18 = 13.9
The fan was connected to the central petrifying PVC pipe:
MP-15 = 18.0
MP-14 = 15.2
The fan was connected to the most northern protruding PVC pipe:
MP-12 = 30.1
MP-16 = 27.4
Off-site at 1245

Page 2 of 2
VIMS Inspection Form
Project Info
Field Tech : Colton Gotshall Date : 11/21/2022
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 N/A
Membrane barrier Yes
Monitoring points N/A
Smoke test N/A
Vertical risers N/A
Seals in concrete slab penetrations/joints Yes
Fan installation and operation N/A
Stairwell N/A
Elevator pit N/A

Page 1 of 2
Photos/Notes

Notes : Buckeye Elm contacted Mid-Atlantic today and stated they were contracted to come repair the vapor barrier in two portion of Building Y. The cutouts in the concrete slab
that compromised the vapor barrier appear to have been repaired. The crows feet will be sealed by Buckeye Elm once the concrete is poured.
Sign-Off
Signature
<-- End of Form -->

Page 2 of 2
VIMS Inspection Form
Project Info
Field Tech : Colton Gotshall Date : 02/01/2023
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 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 2
Photos/Notes
Notes : I arrived on-site and visually inspected the condition of the three VIMS pvc pipes in the alleyway and all 18 monitoring points. The three pipes have had an approximately
12 foot horizontal addition, each, and are now vertical on the parking garage side of the alleyway. Monitoring points MP-1 and MP-10 need vapor pins installed. MP-9 has been
destroyed and needs the vapor pin and stainless steel cap replaced. MP-2 area is still utilized by a crane and is not ready for installation. MP-3 is located in a staircase and it
appears the area is ready for concrete even though Mid-Atlantic has not inspected it yet. MP-4, MP-6, and MP-7 have been eliminated from the plans. MP-5 was not located
***** MP-8 was not located ***** MP-11 through MP-18 are good to go.
Sign-Off
Signature
<-- End of Form -->
Page 2 of 2
VIMS Inspection Form
Project Info
Field Tech : Colton Gotshall Date : 02/02/2023
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 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 : I connected a fan to all three VIMS pipe stickups and tested their influence on monitoring points in Building Y. Influence above 20 Pascals was observed in all monitoring
points tested. The three VIMS pipes appear to be in correct/working order. We then repaired/replaced vapor pins at MP-9 and MP-10. The rebar sticking out from MP-1
appears to be deeper than an inch and we were unable to install. Additionally, MP-5 has been concreted over and will need reinstalled.
Sign-Off
Signature
<-- End of Form -->

Page 3 of 3
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? 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 N/A
Stairwell N/A
Elevator pit N/A

Page 1 of 2
Photos/Notes

Notes : Monitoring point MP-15 was located beneath ceramic floor tile in the womens locker room. The stainless steel cap was destroyed and replaced. Influence testing of the
point: North VIMS Fan = -22.6 pascals Central VIMS Fan = -31.5 pascals South VIMS Fan = -22.9 pascals
Sign-Off
Signature
<-- End of Form -->

Page 2 of 2
VIMS Inspection Form
Project Info
Field Tech : Colton Gotshall Date : 06/08/2023
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 Yes
Seals in concrete slab penetrations/joints N/A
Fan installation and operation Yes
Stairwell Yes
Elevator pit Yes

Page 1 of 2
Photos/Notes

Notes : The installation of MP-1 and MP-5 was observed to be too loose and was corrected during this inspection. Only two VIMS fans were installed and ready for activation
during this inspection. Mid-Atlantic turned on the two fans (South and Central) and checked the influence on all monitoring points in Building Y. The following numbers are in
pascals. MP-12 = -51.3 MP-13 = -52.2 MP-14 = -54.1 MP-15 = -59.3 MP-16 = -60.6 MP-17 = -86.9 MP-18 = -90.2
Sign-Off
Signature
<-- End of Form -->

Page 2 of 2

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

Laboratory's liability in any claim relating to analyses performed shall be limited to, at laboratory's option, repeating the
analysis in question at laboratory's expense, or the refund of the charges paid for performance of said analysis.

6/19/2023
Mid-Atlantic Associates, Inc. - Raleigh Nolen Barefoot
409 Rogers View Court Raleigh, NC, 27610
Ref: Analytical Testing
Lab Report Number: 23-165-0001 Client Project Description: North Hills Expansion
Dear Nolen Barefoot:
Waypoint Analytical, LLC (Charlotte) received sample(s) on 6/13/2023 for the analyses presented in the
following report.
The above referenced project has been analyzed per your instructions. The analyses were performed in accordance with the applicable analytical method.
The analytical data has been validated using standard quality control measures performed as required by the
analytical method. Quality Assurance, method validations, instrumentation maintenance and calibration for all parameters were performed in accordance with guidelines established by the USEPA (including 40 CFR 136
Method Update Rule May 2021) unless otherwise indicated. Certain parameters (chlorine, pH, dissolved oxygen, sulfite...) are required to be analyzed within 15 minutes of sampling. Usually, but not always, any field parameter analyzed at the laboratory is outside of this holding time. Refer to sample analysis time for confirmation of holding time compliance.
The results are shown on the attached Report of Analysis(s). Results for solid matrices are reported on an as-received basis unless otherwise indicated. This report shall not be reproduced except in full and relates only to
the samples included in this report. Please do not hesitate to contact me or client services if you have any questions or need additional information. Sincerely,
Angela D Overcash Senior Project Manager
Page 1 of 68
Certification Summary
Laboratory ID: WP CNC: Waypoint Analytical Carolina, Inc. (C), Charlotte, NC
State Program Lab ID Expiration Date
07/31/202337735State ProgramNorth Carolina
12/31/2023402State ProgramNorth Carolina
07/31/202399012State ProgramSouth Carolina
12/31/202299012State ProgramSouth Carolina
Page 1 of 1 00016/23-165-0001
Page 2 of 68
Report Number:
Sample Summary Table
Client Project Description:
23-165-0001
North Hills Expansion
Lab No Client Sample ID Matrix Date Collected Date Received
06/10/2023 12:11Air 98267 IA-5 06/13/2023 14:00
06/10/2023 12:09Air 98268 IA-9 06/13/2023 14:00
06/10/2023 12:00Air 98269 IA-18 06/13/2023 14:00
06/10/2023 12:02Air 98270 IA-17 06/13/2023 14:00
06/10/2023 12:05Air 98271 IA-11 06/13/2023 14:00
06/10/2023 12:07Air 98272 IA-10 06/13/2023 14:00
06/10/2023 11:52Air 98273 IA-13 06/13/2023 14:00
06/10/2023 12:14Air 98274 OA 06/13/2023 14:00
06/10/2023 11:58Air 98275 IA-15 06/13/2023 14:00
06/10/2023 11:56Air 98276 IA-16 06/13/2023 14:00
06/10/2023 11:49Air 98277 IA-12 06/13/2023 14:00
06/10/2023 11:49Air 98278 IA-DUP 06/13/2023 14:00
Page 3 of 68
Summary of Detected Analytes
QualifiersAnalyzedUnitsResult
Report Number:
Client Sample ID
Method Parameters
Lab Sample ID
23-165-0001
Report Limit
Project:North Hills Expansion
V 98267IA-5
51.6 06/14/2023 18:37TO-15 Acetone µg/m3 0.202
J1.15 06/14/2023 18:37TO-15 Benzene µg/m3 0.073
J0.918 06/14/2023 18:37TO-15 Chloromethane µg/m3 0.067
2.78 06/14/2023 18:37TO-15 Dichlorodifluoromethane µg/m3 0.134
10.8 06/14/2023 18:37TO-15 trans-1,2-Dichloroethene µg/m3 0.108
7.38 06/14/2023 18:37TO-15 Ethylbenzene µg/m3 0.106
J0.737 06/14/2023 18:37TO-15 4-Ethyltoluene µg/m3 0.128
J1.38 06/14/2023 18:37TO-15 Heptane µg/m3 0.143
J1.07 06/14/2023 18:37TO-15 n-Hexane µg/m3 0.047
JB2.47 06/14/2023 18:37TO-15 Isopropyl Alcohol µg/m3 0.139
232 06/15/2023 18:58TO-15 Methyl Ethyl Ketone (MEK)µg/m3 4.48
J0.528 06/14/2023 18:37TO-15 4-Methyl-2-Pentanone µg/m3 0.121
J1.58 06/14/2023 18:37TO-15 Methylene Chloride µg/m3 0.488
6.19 06/14/2023 18:37TO-15 Styrene µg/m3 0.124
J0.786 06/14/2023 18:37TO-15 Tetrachloroethene µg/m3 0.181
J1.43 06/14/2023 18:37TO-15 Tetrahydrofuran µg/m3 0.107
10.5 06/14/2023 18:37TO-15 Toluene µg/m3 0.090
J1.62 06/14/2023 18:37TO-15 Trichlorofluoromethane µg/m3 0.130
5.80 06/14/2023 18:37TO-15 1,2,4-Trimethylbenzene µg/m3 0.110
J1.30 06/14/2023 18:37TO-15 1,3,5-Trimethylbenzene µg/m3 0.236
16.7 06/14/2023 18:37TO-15 o-Xylene µg/m3 0.157
27.1 06/14/2023 18:37TO-15 m,p-Xylene µg/m3 0.217
43.8 06/14/2023 18:37TO-15 Xylene (Total)µg/m3 0.157
V 98268IA-9
63.1 06/14/2023 19:24TO-15 Acetone µg/m3 0.202
J1.06 06/14/2023 19:24TO-15 Benzene µg/m3 0.073
J0.918 06/14/2023 19:24TO-15 Chloromethane µg/m3 0.067
2.82 06/14/2023 19:24TO-15 Dichlorodifluoromethane µg/m3 0.134
J0.645 06/14/2023 19:24TO-15 Ethyl Acetate µg/m3 0.136
J1.16 06/14/2023 19:24TO-15 Ethylbenzene µg/m3 0.106
J0.521 06/14/2023 19:24TO-15 4-Ethyltoluene µg/m3 0.128
J0.590 06/14/2023 19:24TO-15 1,1,2-Trichloro-1,2,2-trifluoroethane µg/m3 0.561
J0.672 06/14/2023 19:24TO-15 Heptane µg/m3 0.143
JB4.00 06/14/2023 19:24TO-15 Isopropyl Alcohol µg/m3 0.139
56.8 06/14/2023 19:24TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224
J1.82 06/14/2023 19:24TO-15 4-Methyl-2-Pentanone µg/m3 0.121
Page 4 of 68
Summary of Detected Analytes
QualifiersAnalyzedUnitsResult
Report Number:
Client Sample ID
Method Parameters
Lab Sample ID
23-165-0001
Report Limit
Project:North Hills Expansion
V 98268IA-9
J0.871 06/14/2023 19:24TO-15 Methylene Chloride µg/m3 0.488
5.12 06/14/2023 19:24TO-15 Naphthalene µg/m3 0.183
52.3 06/14/2023 19:24TO-15 Styrene µg/m3 0.124
133 06/14/2023 19:24TO-15 Tetrahydrofuran µg/m3 0.107
19.8 06/14/2023 19:24TO-15 Toluene µg/m3 0.090
J1.62 06/14/2023 19:24TO-15 Trichlorofluoromethane µg/m3 0.130
4.17 06/14/2023 19:24TO-15 1,2,4-Trimethylbenzene µg/m3 0.110
J0.584 06/14/2023 19:24TO-15 1,3,5-Trimethylbenzene µg/m3 0.236
2.26 06/14/2023 19:24TO-15 o-Xylene µg/m3 0.157
J5.45 06/14/2023 19:24TO-15 m,p-Xylene µg/m3 0.217
J7.71 06/14/2023 19:24TO-15 Xylene (Total)µg/m3 0.157
V 98269IA-18
106 06/15/2023 19:35TO-15 Acetone µg/m3 4.04
J0.859 06/14/2023 20:12TO-15 Benzene µg/m3 0.073
J0.949 06/14/2023 20:12TO-15 Chloromethane µg/m3 0.067
2.87 06/14/2023 20:12TO-15 Dichlorodifluoromethane µg/m3 0.134
4.22 06/14/2023 20:12TO-15 trans-1,2-Dichloroethene µg/m3 0.108
2.76 06/14/2023 20:12TO-15 Ethyl Acetate µg/m3 0.136
38.3 06/14/2023 20:12TO-15 Ethylbenzene µg/m3 0.106
2.57 06/14/2023 20:12TO-15 4-Ethyltoluene µg/m3 0.128
J0.582 06/14/2023 20:12TO-15 1,1,2-Trichloro-1,2,2-trifluoroethane µg/m3 0.561
J1.88 06/14/2023 20:12TO-15 Heptane µg/m3 0.143
2.02 06/14/2023 20:12TO-15 n-Hexane µg/m3 0.047
B5.13 06/14/2023 20:12TO-15 Isopropyl Alcohol µg/m3 0.139
34.5 06/14/2023 20:12TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224
114 06/14/2023 20:12TO-15 4-Methyl-2-Pentanone µg/m3 0.121
J1.38 06/14/2023 20:12TO-15 Methylene Chloride µg/m3 0.488
4.46 06/14/2023 20:12TO-15 Propene µg/m3 0.242
4.61 06/14/2023 20:12TO-15 Styrene µg/m3 0.124
11.9 06/14/2023 20:12TO-15 Tetrahydrofuran µg/m3 0.107
50.6 06/14/2023 20:12TO-15 Toluene µg/m3 0.090
J1.60 06/14/2023 20:12TO-15 Trichlorofluoromethane µg/m3 0.130
10.2 06/14/2023 20:12TO-15 1,2,4-Trimethylbenzene µg/m3 0.110
3.42 06/14/2023 20:12TO-15 1,3,5-Trimethylbenzene µg/m3 0.236
29.1 06/14/2023 20:12TO-15 o-Xylene µg/m3 0.157
119 06/14/2023 20:12TO-15 m,p-Xylene µg/m3 0.217
Page 5 of 68
Summary of Detected Analytes
QualifiersAnalyzedUnitsResult
Report Number:
Client Sample ID
Method Parameters
Lab Sample ID
23-165-0001
Report Limit
Project:North Hills Expansion
V 98269IA-18
148 06/14/2023 20:12TO-15 Xylene (Total)µg/m3 0.157
V 98270IA-17
51.2 06/14/2023 20:59TO-15 Acetone µg/m3 0.202
J0.581 06/14/2023 20:59TO-15 Benzene µg/m3 0.073
J0.904 06/14/2023 20:59TO-15 Chloromethane µg/m3 0.067
J3.35 06/14/2023 20:59TO-15 1,3-Dichlorobenzene µg/m3 0.174
2.90 06/14/2023 20:59TO-15 Dichlorodifluoromethane µg/m3 0.134
4.19 06/14/2023 20:59TO-15 trans-1,2-Dichloroethene µg/m3 0.108
3.04 06/14/2023 20:59TO-15 Ethylbenzene µg/m3 0.106
J0.894 06/14/2023 20:59TO-15 4-Ethyltoluene µg/m3 0.128
J0.597 06/14/2023 20:59TO-15 1,1,2-Trichloro-1,2,2-trifluoroethane µg/m3 0.561
J1.09 06/14/2023 20:59TO-15 Heptane µg/m3 0.143
J0.951 06/14/2023 20:59TO-15 n-Hexane µg/m3 0.047
JB2.91 06/14/2023 20:59TO-15 Isopropyl Alcohol µg/m3 0.139
15.9 06/14/2023 20:59TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224
22.1 06/14/2023 20:59TO-15 4-Methyl-2-Pentanone µg/m3 0.121
J1.29 06/14/2023 20:59TO-15 Methylene Chloride µg/m3 0.488
3.48 06/14/2023 20:59TO-15 Styrene µg/m3 0.124
4.25 06/14/2023 20:59TO-15 Tetrachloroethene µg/m3 0.181
3.62 06/14/2023 20:59TO-15 Tetrahydrofuran µg/m3 0.107
11.5 06/14/2023 20:59TO-15 Toluene µg/m3 0.090
J1.65 06/14/2023 20:59TO-15 Trichlorofluoromethane µg/m3 0.130
5.55 06/14/2023 20:59TO-15 1,2,4-Trimethylbenzene µg/m3 0.110
J1.24 06/14/2023 20:59TO-15 1,3,5-Trimethylbenzene µg/m3 0.236
3.92 06/14/2023 20:59TO-15 o-Xylene µg/m3 0.157
12.4 06/14/2023 20:59TO-15 m,p-Xylene µg/m3 0.217
16.3 06/14/2023 20:59TO-15 Xylene (Total)µg/m3 0.157
V 98271IA-11
22.9 06/14/2023 21:48TO-15 Acetone µg/m3 0.202
J0.680 06/14/2023 21:48TO-15 Benzene µg/m3 0.073
J0.842 06/14/2023 21:48TO-15 Chloromethane µg/m3 0.067
2.88 06/14/2023 21:48TO-15 Dichlorodifluoromethane µg/m3 0.134
J0.976 06/14/2023 21:48TO-15 Ethylbenzene µg/m3 0.106
J0.567 06/14/2023 21:48TO-15 1,1,2-Trichloro-1,2,2-trifluoroethane µg/m3 0.561
J0.405 06/14/2023 21:48TO-15 Heptane µg/m3 0.143
J0.609 06/14/2023 21:48TO-15 n-Hexane µg/m3 0.047
Page 6 of 68
Summary of Detected Analytes
QualifiersAnalyzedUnitsResult
Report Number:
Client Sample ID
Method Parameters
Lab Sample ID
23-165-0001
Report Limit
Project:North Hills Expansion
V 98271IA-11
JB2.77 06/14/2023 21:48TO-15 Isopropyl Alcohol µg/m3 0.139
3.01 06/14/2023 21:48TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224
J1.17 06/14/2023 21:48TO-15 4-Methyl-2-Pentanone µg/m3 0.121
J0.937 06/14/2023 21:48TO-15 Methylene Chloride µg/m3 0.488
2.96 06/14/2023 21:48TO-15 Styrene µg/m3 0.124
J0.645 06/14/2023 21:48TO-15 Tetrahydrofuran µg/m3 0.107
4.83 06/14/2023 21:48TO-15 Toluene µg/m3 0.090
J1.66 06/14/2023 21:48TO-15 Trichlorofluoromethane µg/m3 0.130
3.38 06/14/2023 21:48TO-15 1,2,4-Trimethylbenzene µg/m3 0.110
J0.924 06/14/2023 21:48TO-15 o-Xylene µg/m3 0.157
J4.93 06/14/2023 21:48TO-15 m,p-Xylene µg/m3 0.217
J5.85 06/14/2023 21:48TO-15 Xylene (Total)µg/m3 0.157
V 98272IA-10
2820 06/15/2023 20:11TO-15 Acetone µg/m3 10.1
J0.683 06/14/2023 22:36TO-15 Benzene µg/m3 0.073
J3.36 06/14/2023 22:36TO-15 Carbon Disulfide µg/m3 0.060
J0.644 06/14/2023 22:36TO-15 Chloromethane µg/m3 0.067
306 06/15/2023 20:11TO-15 Cyclohexane µg/m3 8.05
J2.10 06/14/2023 22:36TO-15 Dichlorodifluoromethane µg/m3 0.134
7.29 06/14/2023 22:36TO-15 Ethylbenzene µg/m3 0.106
J1.62 06/14/2023 22:36TO-15 4-Ethyltoluene µg/m3 0.128
J1.76 06/14/2023 22:36TO-15 Heptane µg/m3 0.143
J58.1 06/15/2023 20:11TO-15 Methyl Ethyl Ketone (MEK)µg/m3 11.2
J0.323 06/14/2023 22:36TO-15 4-Methyl-2-Pentanone µg/m3 0.121
J0.944 06/14/2023 22:36TO-15 Methylene Chloride µg/m3 0.488
6.38 06/14/2023 22:36TO-15 Styrene µg/m3 0.124
271 06/15/2023 20:11TO-15 Tetrahydrofuran µg/m3 5.35
1240 06/15/2023 20:11TO-15 Toluene µg/m3 4.50
J1.34 06/14/2023 22:36TO-15 Trichlorofluoromethane µg/m3 0.130
9.89 06/14/2023 22:36TO-15 1,2,4-Trimethylbenzene µg/m3 0.110
3.07 06/14/2023 22:36TO-15 1,3,5-Trimethylbenzene µg/m3 0.236
9.85 06/14/2023 22:36TO-15 o-Xylene µg/m3 0.157
29.8 06/14/2023 22:36TO-15 m,p-Xylene µg/m3 0.217
39.7 06/14/2023 22:36TO-15 Xylene (Total)µg/m3 0.157
V 98273IA-13
44.4 06/14/2023 23:23TO-15 Acetone µg/m3 0.202
Page 7 of 68
Summary of Detected Analytes
QualifiersAnalyzedUnitsResult
Report Number:
Client Sample ID
Method Parameters
Lab Sample ID
23-165-0001
Report Limit
Project:North Hills Expansion
V 98273IA-13
J0.635 06/14/2023 23:23TO-15 Benzene µg/m3 0.073
J0.920 06/14/2023 23:23TO-15 Chloromethane µg/m3 0.067
J0.763 06/14/2023 23:23TO-15 1,3-Dichlorobenzene µg/m3 0.174
2.84 06/14/2023 23:23TO-15 Dichlorodifluoromethane µg/m3 0.134
J1.20 06/14/2023 23:23TO-15 trans-1,2-Dichloroethene µg/m3 0.108
J1.26 06/14/2023 23:23TO-15 Ethylbenzene µg/m3 0.106
J0.624 06/14/2023 23:23TO-15 4-Ethyltoluene µg/m3 0.128
J0.590 06/14/2023 23:23TO-15 1,1,2-Trichloro-1,2,2-trifluoroethane µg/m3 0.561
J0.938 06/14/2023 23:23TO-15 Heptane µg/m3 0.143
J0.574 06/14/2023 23:23TO-15 n-Hexane µg/m3 0.047
JB3.13 06/14/2023 23:23TO-15 Isopropyl Alcohol µg/m3 0.139
15.2 06/14/2023 23:23TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224
8.19 06/14/2023 23:23TO-15 4-Methyl-2-Pentanone µg/m3 0.121
3.85 06/14/2023 23:23TO-15 Methylene Chloride µg/m3 0.488
3.49 06/14/2023 23:23TO-15 Styrene µg/m3 0.124
J1.29 06/14/2023 23:23TO-15 Tetrachloroethene µg/m3 0.181
J1.44 06/14/2023 23:23TO-15 Tetrahydrofuran µg/m3 0.107
7.08 06/14/2023 23:23TO-15 Toluene µg/m3 0.090
J1.53 06/14/2023 23:23TO-15 Trichlorofluoromethane µg/m3 0.130
4.55 06/14/2023 23:23TO-15 1,2,4-Trimethylbenzene µg/m3 0.110
J0.830 06/14/2023 23:23TO-15 1,3,5-Trimethylbenzene µg/m3 0.236
J2.14 06/14/2023 23:23TO-15 o-Xylene µg/m3 0.157
6.37 06/14/2023 23:23TO-15 m,p-Xylene µg/m3 0.217
J8.51 06/14/2023 23:23TO-15 Xylene (Total)µg/m3 0.157
V 98274OA
15.3 06/15/2023 00:11TO-15 Acetone µg/m3 0.202
J0.859 06/15/2023 00:11TO-15 Benzene µg/m3 0.073
J0.916 06/15/2023 00:11TO-15 Chloromethane µg/m3 0.067
2.89 06/15/2023 00:11TO-15 Dichlorodifluoromethane µg/m3 0.134
J0.547 06/15/2023 00:11TO-15 trans-1,2-Dichloroethene µg/m3 0.108
J0.316 06/15/2023 00:11TO-15 Ethylbenzene µg/m3 0.106
J0.597 06/15/2023 00:11TO-15 1,1,2-Trichloro-1,2,2-trifluoroethane µg/m3 0.561
J0.344 06/15/2023 00:11TO-15 Heptane µg/m3 0.143
J0.595 06/15/2023 00:11TO-15 n-Hexane µg/m3 0.047
JB1.78 06/15/2023 00:11TO-15 Isopropyl Alcohol µg/m3 0.139
1.75 06/15/2023 00:11TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224
Page 8 of 68
Summary of Detected Analytes
QualifiersAnalyzedUnitsResult
Report Number:
Client Sample ID
Method Parameters
Lab Sample ID
23-165-0001
Report Limit
Project:North Hills Expansion
V 98274OA
J1.09 06/15/2023 00:11TO-15 Methylene Chloride µg/m3 0.488
1.05 06/15/2023 00:11TO-15 Propene µg/m3 0.242
J2.25 06/15/2023 00:11TO-15 Tetrachloroethene µg/m3 0.181
J0.787 06/15/2023 00:11TO-15 Tetrahydrofuran µg/m3 0.107
B2.55 06/15/2023 00:11TO-15 Toluene µg/m3 0.090
J1.62 06/15/2023 00:11TO-15 Trichlorofluoromethane µg/m3 0.130
J0.377 06/15/2023 00:11TO-15 o-Xylene µg/m3 0.157
J3.08 06/15/2023 00:11TO-15 m,p-Xylene µg/m3 0.217
J3.46 06/15/2023 00:11TO-15 Xylene (Total)µg/m3 0.157
V 98275IA-15
56.5 06/15/2023 21:10TO-15 Acetone µg/m3 0.202
J0.827 06/15/2023 21:10TO-15 Benzene µg/m3 0.073
J0.292 06/15/2023 21:10TO-15 Carbon Disulfide µg/m3 0.060
J0.497 06/15/2023 21:10TO-15 Chlorobenzene µg/m3 0.107
J1.77 06/15/2023 21:10TO-15 1,3-Dichlorobenzene µg/m3 0.174
3.02 06/15/2023 21:10TO-15 Dichlorodifluoromethane µg/m3 0.134
5.74 06/15/2023 21:10TO-15 trans-1,2-Dichloroethene µg/m3 0.108
J0.677 06/15/2023 21:10TO-15 Ethyl Acetate µg/m3 0.136
4.45 06/15/2023 21:10TO-15 Ethylbenzene µg/m3 0.106
4.04 06/15/2023 21:10TO-15 4-Ethyltoluene µg/m3 0.128
J0.567 06/15/2023 21:10TO-15 1,1,2-Trichloro-1,2,2-trifluoroethane µg/m3 0.561
2.23 06/15/2023 21:10TO-15 Heptane µg/m3 0.143
J0.884 06/15/2023 21:10TO-15 n-Hexane µg/m3 0.047
JB3.27 06/15/2023 21:10TO-15 Isopropyl Alcohol µg/m3 0.139
20.0 06/15/2023 21:10TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224
16.3 06/15/2023 21:10TO-15 4-Methyl-2-Pentanone µg/m3 0.121
4.67 06/15/2023 21:10TO-15 Methylene Chloride µg/m3 0.488
5.40 06/15/2023 21:10TO-15 Styrene µg/m3 0.124
7.48 06/15/2023 21:10TO-15 Tetrahydrofuran µg/m3 0.107
17.2 06/15/2023 21:10TO-15 Toluene µg/m3 0.090
J1.93 06/15/2023 21:10TO-15 Trichlorofluoromethane µg/m3 0.130
14.8 06/15/2023 21:10TO-15 1,2,4-Trimethylbenzene µg/m3 0.110
5.39 06/15/2023 21:10TO-15 1,3,5-Trimethylbenzene µg/m3 0.236
7.67 06/15/2023 21:10TO-15 o-Xylene µg/m3 0.157
17.5 06/15/2023 21:10TO-15 m,p-Xylene µg/m3 0.217
25.2 06/15/2023 21:10TO-15 Xylene (Total)µg/m3 0.157
Page 9 of 68
Summary of Detected Analytes
QualifiersAnalyzedUnitsResult
Report Number:
Client Sample ID
Method Parameters
Lab Sample ID
23-165-0001
Report Limit
Project:North Hills Expansion
V 98276IA-16
72.5 06/16/2023 22:49TO-15 Acetone µg/m3 0.202
J0.824 06/16/2023 22:49TO-15 Benzene µg/m3 0.073
J0.910 06/16/2023 22:49TO-15 Chloromethane µg/m3 0.067
J2.95 06/16/2023 22:49TO-15 Cyclohexane µg/m3 0.161
J2.37 06/16/2023 22:49TO-15 1,3-Dichlorobenzene µg/m3 0.174
2.86 06/16/2023 22:49TO-15 Dichlorodifluoromethane µg/m3 0.134
33.9 06/16/2023 22:49TO-15 trans-1,2-Dichloroethene µg/m3 0.108
J0.918 06/16/2023 22:49TO-15 Ethyl Acetate µg/m3 0.136
4.45 06/16/2023 22:49TO-15 Ethylbenzene µg/m3 0.106
J1.46 06/16/2023 22:49TO-15 4-Ethyltoluene µg/m3 0.128
J0.620 06/16/2023 22:49TO-15 1,1,2-Trichloro-1,2,2-trifluoroethane µg/m3 0.561
2.75 06/16/2023 22:49TO-15 Heptane µg/m3 0.143
J0.944 06/16/2023 22:49TO-15 n-Hexane µg/m3 0.047
5.07 06/16/2023 22:49TO-15 Isopropyl Alcohol µg/m3 0.139
23.2 06/16/2023 22:49TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224
22.7 06/16/2023 22:49TO-15 4-Methyl-2-Pentanone µg/m3 0.121
4.73 06/16/2023 22:49TO-15 Methylene Chloride µg/m3 0.488
4.35 06/16/2023 22:49TO-15 Styrene µg/m3 0.124
9.68 06/16/2023 22:49TO-15 Tetrahydrofuran µg/m3 0.107
15.5 06/16/2023 22:49TO-15 Toluene µg/m3 0.090
J1.65 06/16/2023 22:49TO-15 Trichlorofluoromethane µg/m3 0.130
6.66 06/16/2023 22:49TO-15 1,2,4-Trimethylbenzene µg/m3 0.110
J1.77 06/16/2023 22:49TO-15 1,3,5-Trimethylbenzene µg/m3 0.236
5.83 06/16/2023 22:49TO-15 o-Xylene µg/m3 0.157
17.1 06/16/2023 22:49TO-15 m,p-Xylene µg/m3 0.217
22.9 06/16/2023 22:49TO-15 Xylene (Total)µg/m3 0.157
V 98277IA-12
71.7 06/16/2023 23:37TO-15 Acetone µg/m3 0.202
J0.776 06/16/2023 23:37TO-15 Benzene µg/m3 0.073
J0.997 06/16/2023 23:37TO-15 Chloromethane µg/m3 0.067
J3.36 06/16/2023 23:37TO-15 1,3-Dichlorobenzene µg/m3 0.174
2.94 06/16/2023 23:37TO-15 Dichlorodifluoromethane µg/m3 0.134
85.8 06/16/2023 23:37TO-15 trans-1,2-Dichloroethene µg/m3 0.108
2.28 06/16/2023 23:37TO-15 Ethylbenzene µg/m3 0.106
J0.752 06/16/2023 23:37TO-15 4-Ethyltoluene µg/m3 0.128
J0.613 06/16/2023 23:37TO-15 1,1,2-Trichloro-1,2,2-trifluoroethane µg/m3 0.561
Page 10 of 68
Summary of Detected Analytes
QualifiersAnalyzedUnitsResult
Report Number:
Client Sample ID
Method Parameters
Lab Sample ID
23-165-0001
Report Limit
Project:North Hills Expansion
V 98277IA-12
3.50 06/16/2023 23:37TO-15 Heptane µg/m3 0.143
2.32 06/16/2023 23:37TO-15 n-Hexane µg/m3 0.047
JB3.07 06/16/2023 23:37TO-15 Isopropyl Alcohol µg/m3 0.139
13.0 06/16/2023 23:37TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224
13.4 06/16/2023 23:37TO-15 4-Methyl-2-Pentanone µg/m3 0.121
3.11 06/16/2023 23:37TO-15 Methylene Chloride µg/m3 0.488
3.82 06/16/2023 23:37TO-15 Styrene µg/m3 0.124
13.5 06/16/2023 23:37TO-15 Tetrahydrofuran µg/m3 0.107
11.5 06/16/2023 23:37TO-15 Toluene µg/m3 0.090
J1.60 06/16/2023 23:37TO-15 Trichlorofluoromethane µg/m3 0.130
5.09 06/16/2023 23:37TO-15 1,2,4-Trimethylbenzene µg/m3 0.110
J1.07 06/16/2023 23:37TO-15 1,3,5-Trimethylbenzene µg/m3 0.236
3.03 06/16/2023 23:37TO-15 o-Xylene µg/m3 0.157
9.59 06/16/2023 23:37TO-15 m,p-Xylene µg/m3 0.217
12.6 06/16/2023 23:37TO-15 Xylene (Total)µg/m3 0.157
V 98278IA-DUP
68.2 06/17/2023 00:24TO-15 Acetone µg/m3 0.202
J0.773 06/17/2023 00:24TO-15 Benzene µg/m3 0.073
J0.566 06/17/2023 00:24TO-15 Carbon Tetrachloride µg/m3 0.155
J0.980 06/17/2023 00:24TO-15 Chloromethane µg/m3 0.067
J3.00 06/17/2023 00:24TO-15 Cyclohexane µg/m3 0.161
J3.37 06/17/2023 00:24TO-15 1,3-Dichlorobenzene µg/m3 0.174
2.86 06/17/2023 00:24TO-15 Dichlorodifluoromethane µg/m3 0.134
85.2 06/17/2023 00:24TO-15 trans-1,2-Dichloroethene µg/m3 0.108
2.21 06/17/2023 00:24TO-15 Ethylbenzene µg/m3 0.106
J0.722 06/17/2023 00:24TO-15 4-Ethyltoluene µg/m3 0.128
J0.613 06/17/2023 00:24TO-15 1,1,2-Trichloro-1,2,2-trifluoroethane µg/m3 0.561
3.33 06/17/2023 00:24TO-15 Heptane µg/m3 0.143
J0.722 06/17/2023 00:24TO-15 n-Hexane µg/m3 0.047
JB3.09 06/17/2023 00:24TO-15 Isopropyl Alcohol µg/m3 0.139
12.9 06/17/2023 00:24TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224
13.4 06/17/2023 00:24TO-15 4-Methyl-2-Pentanone µg/m3 0.121
2.91 06/17/2023 00:24TO-15 Methylene Chloride µg/m3 0.488
3.78 06/17/2023 00:24TO-15 Styrene µg/m3 0.124
J0.861 06/17/2023 00:24TO-15 Tetrachloroethene µg/m3 0.181
13.1 06/17/2023 00:24TO-15 Tetrahydrofuran µg/m3 0.107
Page 11 of 68
Summary of Detected Analytes
QualifiersAnalyzedUnitsResult
Report Number:
Client Sample ID
Method Parameters
Lab Sample ID
23-165-0001
Report Limit
Project:North Hills Expansion
V 98278IA-DUP
8.80 06/17/2023 00:24TO-15 Toluene µg/m3 0.090
J1.61 06/17/2023 00:24TO-15 Trichlorofluoromethane µg/m3 0.130
5.01 06/17/2023 00:24TO-15 1,2,4-Trimethylbenzene µg/m3 0.110
J0.983 06/17/2023 00:24TO-15 1,3,5-Trimethylbenzene µg/m3 0.236
2.99 06/17/2023 00:24TO-15 o-Xylene µg/m3 0.157
9.39 06/17/2023 00:24TO-15 m,p-Xylene µg/m3 0.217
12.4 06/17/2023 00:24TO-15 Xylene (Total)µg/m3 0.157
Page 12 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-5
98267 Matrix:
6/10/2023 12:11
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34387 06/14/23 09:00 V34413 06/15/23 09:00
51.6 µg/m3 0.202 4.75Acetone 1 06/14/23 18:37 V34391ENM
1.15 J
µg/m3 0.073 1.60
Benzene 1 06/14/23 18:37 V34391ENM
<0.147 µg/m3 0.147 10.4Benzyl Chloride 1 06/14/23 18:37 V34391ENM
<0.150 µg/m3 0.150 3.35Bromodichloromethane 1 06/14/23 18:37 V34391ENM
<0.153 µg/m3 0.153 5.17Bromoform 1 06/14/23 18:37 V34391ENM
<0.115 µg/m3 0.115 1.94Bromomethane 1 06/14/23 18:37 V34391ENM
<0.328 µg/m3 0.328 1.111,3-Butadiene 1 06/14/23 18:37 V34391ENM
<0.060 µg/m3 0.060 6.23Carbon Disulfide 1 06/14/23 18:37 V34391ENM
<0.155 µg/m3 0.155 3.15
Carbon Tetrachloride 1 06/14/23 18:37 V34391ENM
<0.107 µg/m3 0.107 2.30Chlorobenzene 1 06/14/23 18:37 V34391ENM
<0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 06/14/23 18:37 V34391ENM
<0.164 µg/m3 0.164 1.32Chloroethane 1 06/14/23 18:37 V34391ENM
<0.086 µg/m3 0.086 2.44Chloroform 1 06/14/23 18:37 V34391ENM
0.918 J µg/m3 0.067 1.03Chloromethane 1 06/14/23 18:37 V34391ENM
<0.161 µg/m3 0.161 3.44Cyclohexane 1 06/14/23 18:37 V34391ENM
<0.151 µg/m3 0.151 3.841,2-Dibromoethane 1 06/14/23 18:37 V34391ENM
<0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 06/14/23 18:37 V34391ENM
<0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 06/14/23 18:37 V34391ENM
<0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 06/14/23 18:37 V34391ENM
2.78 µg/m3 0.134 2.47Dichlorodifluoromethane 1 06/14/23 18:37 V34391ENM
<0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 06/14/23 18:37 V34391ENM
<0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 06/14/23 18:37 V34391ENM
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 13 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-5
98267 Matrix:
6/10/2023 12:11
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34387 06/14/23 09:00 V34413 06/15/23 09:00
<0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 06/14/23 18:37 V34391ENM
<0.095 µg/m3 0.095 1.98
cis-1,2-Dichloroethene 1 06/14/23 18:37 V34391ENM
10.8 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 06/14/23 18:37 V34391ENM
<0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 06/14/23 18:37 V34391ENM
<0.622 µg/m3 0.622 3.501,2-Dichlorotetrafluoroethane 1 06/14/23 18:37 V34391ENM
<0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 06/14/23 18:37 V34391ENM
<0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 06/14/23 18:37 V34391ENM
<0.435 µg/m3 0.435 1.801,4-Dioxane 1 06/14/23 18:37 V34391ENM
<0.136 µg/m3 0.136 1.80
Ethyl Acetate 1 06/14/23 18:37 V34391ENM
7.38 µg/m3 0.106 2.17Ethylbenzene 1 06/14/23 18:37 V34391ENM
0.737 J µg/m3 0.128 2.464-Ethyltoluene 1 06/14/23 18:37 V34391ENM
<0.561 µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 06/14/23 18:37 V34391ENM
1.38 J µg/m3 0.143 2.05Heptane 1 06/14/23 18:37 V34391ENM
<0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 06/14/23 18:37 V34391ENM
1.07 J µg/m3 0.047 1.76n-Hexane 1 06/14/23 18:37 V34391ENM
<0.285 µg/m3 0.285 2.052-Hexanone 1 06/14/23 18:37 V34391ENM
2.47 JB µg/m3 0.139 4.92Isopropyl Alcohol 1 06/14/23 18:37 V34391ENM
232 µg/m3 4.48 29.5Methyl Ethyl Ketone (MEK)20 06/15/23 18:58 V34447ENM
<0.033 µg/m3 0.033 1.80Methyl tert-butyl ether (MTBE)1 06/14/23 18:37 V34391ENM
0.528 J µg/m3 0.121 2.054-Methyl-2-Pentanone 1 06/14/23 18:37 V34391ENM
1.58 J µg/m3 0.488 1.74Methylene Chloride 1 06/14/23 18:37 V34391ENM
<0.183 µg/m3 0.183 2.62Naphthalene 1 06/14/23 18:37 V34391ENM
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 14 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-5
98267 Matrix:
6/10/2023 12:11
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34387 06/14/23 09:00 V34413 06/15/23 09:00
<0.242 µg/m3 0.242 0.860Propene 1 06/14/23 18:37 V34391ENM
6.19 µg/m3 0.124 2.13
Styrene 1 06/14/23 18:37 V34391ENM
<0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 06/14/23 18:37 V34391ENM
0.786 J µg/m3 0.181 3.39Tetrachloroethene 1 06/14/23 18:37 V34391ENM
1.43 J µg/m3 0.107 1.47Tetrahydrofuran 1 06/14/23 18:37 V34391ENM
10.5 µg/m3 0.090 1.88Toluene 1 06/14/23 18:37 V34391ENM
<0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 06/14/23 18:37 V34391ENM
<0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 06/14/23 18:37 V34391ENM
<0.087 µg/m3 0.087 2.73
1,1,2-Trichloroethane 1 06/14/23 18:37 V34391ENM
<0.199 µg/m3 0.199 2.15Trichloroethene 1 06/14/23 18:37 V34391ENM
1.62 J µg/m3 0.130 2.81Trichlorofluoromethane 1 06/14/23 18:37 V34391ENM
5.80 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 06/14/23 18:37 V34391ENM
1.30 J µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 06/14/23 18:37 V34391ENM
<0.224 µg/m3 0.224 1.76Vinyl Acetate 1 06/14/23 18:37 V34391ENM
<0.127 µg/m3 0.127 1.28Vinyl Chloride 1 06/14/23 18:37 V34391ENM
16.7 µg/m3 0.157 2.17o-Xylene 1 06/14/23 18:37 V34391ENM
27.1 µg/m3 0.217 5.65m,p-Xylene 1 06/14/23 18:37 V34391ENM
43.8 µg/m3 0.157 2.17Xylene (Total)1 06/14/23 18:37 V34391
Surrogate: 4-Bromofluorobenzene 97.5 Limits: 70-130%06/14/23 18:371 ENM V34391
Surrogate: 4-Bromofluorobenzene 96.4 Limits: 70-130%06/15/23 18:5820 ENM V34447
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 15 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-9
98268 Matrix:
6/10/2023 12:09
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34387 06/14/23 09:00
63.1 µg/m3 0.202 4.75Acetone 1 06/14/23 19:24 V34391ENM
1.06 J
µg/m3 0.073 1.60
Benzene 1 06/14/23 19:24 V34391ENM
<0.147 µg/m3 0.147 10.4Benzyl Chloride 1 06/14/23 19:24 V34391ENM
<0.150 µg/m3 0.150 3.35Bromodichloromethane 1 06/14/23 19:24 V34391ENM
<0.153 µg/m3 0.153 5.17Bromoform 1 06/14/23 19:24 V34391ENM
<0.115 µg/m3 0.115 1.94Bromomethane 1 06/14/23 19:24 V34391ENM
<0.328 µg/m3 0.328 1.111,3-Butadiene 1 06/14/23 19:24 V34391ENM
<0.060 µg/m3 0.060 6.23Carbon Disulfide 1 06/14/23 19:24 V34391ENM
<0.155 µg/m3 0.155 3.15
Carbon Tetrachloride 1 06/14/23 19:24 V34391ENM
<0.107 µg/m3 0.107 2.30Chlorobenzene 1 06/14/23 19:24 V34391ENM
<0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 06/14/23 19:24 V34391ENM
<0.164 µg/m3 0.164 1.32Chloroethane 1 06/14/23 19:24 V34391ENM
<0.086 µg/m3 0.086 2.44Chloroform 1 06/14/23 19:24 V34391ENM
0.918 J µg/m3 0.067 1.03Chloromethane 1 06/14/23 19:24 V34391ENM
<0.161 µg/m3 0.161 3.44Cyclohexane 1 06/14/23 19:24 V34391ENM
<0.151 µg/m3 0.151 3.841,2-Dibromoethane 1 06/14/23 19:24 V34391ENM
<0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 06/14/23 19:24 V34391ENM
<0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 06/14/23 19:24 V34391ENM
<0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 06/14/23 19:24 V34391ENM
2.82 µg/m3 0.134 2.47Dichlorodifluoromethane 1 06/14/23 19:24 V34391ENM
<0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 06/14/23 19:24 V34391ENM
<0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 06/14/23 19:24 V34391ENM
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 16 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-9
98268 Matrix:
6/10/2023 12:09
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34387 06/14/23 09:00
<0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 06/14/23 19:24 V34391ENM
<0.095 µg/m3 0.095 1.98
cis-1,2-Dichloroethene 1 06/14/23 19:24 V34391ENM
<0.108 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 06/14/23 19:24 V34391ENM
<0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 06/14/23 19:24 V34391ENM
<0.622 µg/m3 0.622 3.501,2-Dichlorotetrafluoroethane 1 06/14/23 19:24 V34391ENM
<0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 06/14/23 19:24 V34391ENM
<0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 06/14/23 19:24 V34391ENM
<0.435 µg/m3 0.435 1.801,4-Dioxane 1 06/14/23 19:24 V34391ENM
0.645 J
µg/m3 0.136 1.80
Ethyl Acetate 1 06/14/23 19:24 V34391ENM
1.16 J µg/m3 0.106 2.17Ethylbenzene 1 06/14/23 19:24 V34391ENM
0.521 J µg/m3 0.128 2.464-Ethyltoluene 1 06/14/23 19:24 V34391ENM
0.590 J µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 06/14/23 19:24 V34391ENM
0.672 J µg/m3 0.143 2.05Heptane 1 06/14/23 19:24 V34391ENM
<0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 06/14/23 19:24 V34391ENM
<0.047 µg/m3 0.047 1.76n-Hexane 1 06/14/23 19:24 V34391ENM
<0.285 µg/m3 0.285 2.052-Hexanone 1 06/14/23 19:24 V34391ENM
4.00 JB µg/m3 0.139 4.92Isopropyl Alcohol 1 06/14/23 19:24 V34391ENM
56.8 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 06/14/23 19:24 V34391ENM
<0.033 µg/m3 0.033 1.80Methyl tert-butyl ether (MTBE)1 06/14/23 19:24 V34391ENM
1.82 J µg/m3 0.121 2.054-Methyl-2-Pentanone 1 06/14/23 19:24 V34391ENM
0.871 J µg/m3 0.488 1.74Methylene Chloride 1 06/14/23 19:24 V34391ENM
5.12 µg/m3 0.183 2.62Naphthalene 1 06/14/23 19:24 V34391ENM
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 17 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-9
98268 Matrix:
6/10/2023 12:09
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34387 06/14/23 09:00
<0.242 µg/m3 0.242 0.860Propene 1 06/14/23 19:24 V34391ENM
52.3 µg/m3 0.124 2.13
Styrene 1 06/14/23 19:24 V34391ENM
<0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 06/14/23 19:24 V34391ENM
<0.181 µg/m3 0.181 3.39Tetrachloroethene 1 06/14/23 19:24 V34391ENM
133 µg/m3 0.107 1.47Tetrahydrofuran 1 06/14/23 19:24 V34391ENM
19.8 µg/m3 0.090 1.88Toluene 1 06/14/23 19:24 V34391ENM
<0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 06/14/23 19:24 V34391ENM
<0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 06/14/23 19:24 V34391ENM
<0.087 µg/m3 0.087 2.73
1,1,2-Trichloroethane 1 06/14/23 19:24 V34391ENM
<0.199 µg/m3 0.199 2.15Trichloroethene 1 06/14/23 19:24 V34391ENM
1.62 J µg/m3 0.130 2.81Trichlorofluoromethane 1 06/14/23 19:24 V34391ENM
4.17 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 06/14/23 19:24 V34391ENM
0.584 J µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 06/14/23 19:24 V34391ENM
<0.224 µg/m3 0.224 1.76Vinyl Acetate 1 06/14/23 19:24 V34391ENM
<0.127 µg/m3 0.127 1.28Vinyl Chloride 1 06/14/23 19:24 V34391ENM
2.26 µg/m3 0.157 2.17o-Xylene 1 06/14/23 19:24 V34391ENM
5.45 J µg/m3 0.217 5.65m,p-Xylene 1 06/14/23 19:24 V34391ENM
7.71 J µg/m3 0.157 2.17Xylene (Total)1 06/14/23 19:24 V34391
Surrogate: 4-Bromofluorobenzene 100 Limits: 70-130%06/14/23 19:241 ENM V34391
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 18 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-18
98269 Matrix:
6/10/2023 12:00
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34387 06/14/23 09:00 V34413 06/15/23 09:00
106 µg/m3 4.04 95.0Acetone 20 06/15/23 19:35 V34447ENM
0.859 J
µg/m3 0.073 1.60
Benzene 1 06/14/23 20:12 V34391ENM
<0.147 µg/m3 0.147 10.4Benzyl Chloride 1 06/14/23 20:12 V34391ENM
<0.150 µg/m3 0.150 3.35Bromodichloromethane 1 06/14/23 20:12 V34391ENM
<0.153 µg/m3 0.153 5.17Bromoform 1 06/14/23 20:12 V34391ENM
<0.115 µg/m3 0.115 1.94Bromomethane 1 06/14/23 20:12 V34391ENM
<0.328 µg/m3 0.328 1.111,3-Butadiene 1 06/14/23 20:12 V34391ENM
<0.060 µg/m3 0.060 6.23Carbon Disulfide 1 06/14/23 20:12 V34391ENM
<0.155 µg/m3 0.155 3.15
Carbon Tetrachloride 1 06/14/23 20:12 V34391ENM
<0.107 µg/m3 0.107 2.30Chlorobenzene 1 06/14/23 20:12 V34391ENM
<0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 06/14/23 20:12 V34391ENM
<0.164 µg/m3 0.164 1.32Chloroethane 1 06/14/23 20:12 V34391ENM
<0.086 µg/m3 0.086 2.44Chloroform 1 06/14/23 20:12 V34391ENM
0.949 J µg/m3 0.067 1.03Chloromethane 1 06/14/23 20:12 V34391ENM
<0.161 µg/m3 0.161 3.44Cyclohexane 1 06/14/23 20:12 V34391ENM
<0.151 µg/m3 0.151 3.841,2-Dibromoethane 1 06/14/23 20:12 V34391ENM
<0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 06/14/23 20:12 V34391ENM
<0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 06/14/23 20:12 V34391ENM
<0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 06/14/23 20:12 V34391ENM
2.87 µg/m3 0.134 2.47Dichlorodifluoromethane 1 06/14/23 20:12 V34391ENM
<0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 06/14/23 20:12 V34391ENM
<0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 06/14/23 20:12 V34391ENM
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 19 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-18
98269 Matrix:
6/10/2023 12:00
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34387 06/14/23 09:00 V34413 06/15/23 09:00
<0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 06/14/23 20:12 V34391ENM
<0.095 µg/m3 0.095 1.98
cis-1,2-Dichloroethene 1 06/14/23 20:12 V34391ENM
4.22 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 06/14/23 20:12 V34391ENM
<0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 06/14/23 20:12 V34391ENM
<0.622 µg/m3 0.622 3.501,2-Dichlorotetrafluoroethane 1 06/14/23 20:12 V34391ENM
<0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 06/14/23 20:12 V34391ENM
<0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 06/14/23 20:12 V34391ENM
<0.435 µg/m3 0.435 1.801,4-Dioxane 1 06/14/23 20:12 V34391ENM
2.76 µg/m3 0.136 1.80
Ethyl Acetate 1 06/14/23 20:12 V34391ENM
38.3 µg/m3 0.106 2.17Ethylbenzene 1 06/14/23 20:12 V34391ENM
2.57 µg/m3 0.128 2.464-Ethyltoluene 1 06/14/23 20:12 V34391ENM
0.582 J µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 06/14/23 20:12 V34391ENM
1.88 J µg/m3 0.143 2.05Heptane 1 06/14/23 20:12 V34391ENM
<0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 06/14/23 20:12 V34391ENM
2.02 µg/m3 0.047 1.76n-Hexane 1 06/14/23 20:12 V34391ENM
<0.285 µg/m3 0.285 2.052-Hexanone 1 06/14/23 20:12 V34391ENM
5.13 B µg/m3 0.139 4.92Isopropyl Alcohol 1 06/14/23 20:12 V34391ENM
34.5 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 06/14/23 20:12 V34391ENM
<0.033 µg/m3 0.033 1.80Methyl tert-butyl ether (MTBE)1 06/14/23 20:12 V34391ENM
114 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 06/14/23 20:12 V34391ENM
1.38 J µg/m3 0.488 1.74Methylene Chloride 1 06/14/23 20:12 V34391ENM
<0.183 µg/m3 0.183 2.62Naphthalene 1 06/14/23 20:12 V34391ENM
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 20 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-18
98269 Matrix:
6/10/2023 12:00
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34387 06/14/23 09:00 V34413 06/15/23 09:00
4.46 µg/m3 0.242 0.860Propene 1 06/14/23 20:12 V34391ENM
4.61 µg/m3 0.124 2.13
Styrene 1 06/14/23 20:12 V34391ENM
<0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 06/14/23 20:12 V34391ENM
<0.181 µg/m3 0.181 3.39Tetrachloroethene 1 06/14/23 20:12 V34391ENM
11.9 µg/m3 0.107 1.47Tetrahydrofuran 1 06/14/23 20:12 V34391ENM
50.6 µg/m3 0.090 1.88Toluene 1 06/14/23 20:12 V34391ENM
<0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 06/14/23 20:12 V34391ENM
<0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 06/14/23 20:12 V34391ENM
<0.087 µg/m3 0.087 2.73
1,1,2-Trichloroethane 1 06/14/23 20:12 V34391ENM
<0.199 µg/m3 0.199 2.15Trichloroethene 1 06/14/23 20:12 V34391ENM
1.60 J µg/m3 0.130 2.81Trichlorofluoromethane 1 06/14/23 20:12 V34391ENM
10.2 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 06/14/23 20:12 V34391ENM
3.42 µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 06/14/23 20:12 V34391ENM
<0.224 µg/m3 0.224 1.76Vinyl Acetate 1 06/14/23 20:12 V34391ENM
<0.127 µg/m3 0.127 1.28Vinyl Chloride 1 06/14/23 20:12 V34391ENM
29.1 µg/m3 0.157 2.17o-Xylene 1 06/14/23 20:12 V34391ENM
119 µg/m3 0.217 5.65m,p-Xylene 1 06/14/23 20:12 V34391ENM
148 µg/m3 0.157 2.17Xylene (Total)1 06/14/23 20:12 V34391
Surrogate: 4-Bromofluorobenzene 101 Limits: 70-130%06/14/23 20:121 ENM V34391
Surrogate: 4-Bromofluorobenzene 96.6 Limits: 70-130%06/15/23 19:3520 ENM V34447
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 21 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-17
98270 Matrix:
6/10/2023 12:02
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34387 06/14/23 09:00
51.2 µg/m3 0.202 4.75Acetone 1 06/14/23 20:59 V34391ENM
0.581 J
µg/m3 0.073 1.60
Benzene 1 06/14/23 20:59 V34391ENM
<0.147 µg/m3 0.147 10.4Benzyl Chloride 1 06/14/23 20:59 V34391ENM
<0.150 µg/m3 0.150 3.35Bromodichloromethane 1 06/14/23 20:59 V34391ENM
<0.153 µg/m3 0.153 5.17Bromoform 1 06/14/23 20:59 V34391ENM
<0.115 µg/m3 0.115 1.94Bromomethane 1 06/14/23 20:59 V34391ENM
<0.328 µg/m3 0.328 1.111,3-Butadiene 1 06/14/23 20:59 V34391ENM
<0.060 µg/m3 0.060 6.23Carbon Disulfide 1 06/14/23 20:59 V34391ENM
<0.155 µg/m3 0.155 3.15
Carbon Tetrachloride 1 06/14/23 20:59 V34391ENM
<0.107 µg/m3 0.107 2.30Chlorobenzene 1 06/14/23 20:59 V34391ENM
<0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 06/14/23 20:59 V34391ENM
<0.164 µg/m3 0.164 1.32Chloroethane 1 06/14/23 20:59 V34391ENM
<0.086 µg/m3 0.086 2.44Chloroform 1 06/14/23 20:59 V34391ENM
0.904 J µg/m3 0.067 1.03Chloromethane 1 06/14/23 20:59 V34391ENM
<0.161 µg/m3 0.161 3.44Cyclohexane 1 06/14/23 20:59 V34391ENM
<0.151 µg/m3 0.151 3.841,2-Dibromoethane 1 06/14/23 20:59 V34391ENM
<0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 06/14/23 20:59 V34391ENM
3.35 J µg/m3 0.174 12.01,3-Dichlorobenzene 1 06/14/23 20:59 V34391ENM
<0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 06/14/23 20:59 V34391ENM
2.90 µg/m3 0.134 2.47Dichlorodifluoromethane 1 06/14/23 20:59 V34391ENM
<0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 06/14/23 20:59 V34391ENM
<0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 06/14/23 20:59 V34391ENM
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 22 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-17
98270 Matrix:
6/10/2023 12:02
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34387 06/14/23 09:00
<0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 06/14/23 20:59 V34391ENM
<0.095 µg/m3 0.095 1.98
cis-1,2-Dichloroethene 1 06/14/23 20:59 V34391ENM
4.19 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 06/14/23 20:59 V34391ENM
<0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 06/14/23 20:59 V34391ENM
<0.622 µg/m3 0.622 3.501,2-Dichlorotetrafluoroethane 1 06/14/23 20:59 V34391ENM
<0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 06/14/23 20:59 V34391ENM
<0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 06/14/23 20:59 V34391ENM
<0.435 µg/m3 0.435 1.801,4-Dioxane 1 06/14/23 20:59 V34391ENM
<0.136 µg/m3 0.136 1.80
Ethyl Acetate 1 06/14/23 20:59 V34391ENM
3.04 µg/m3 0.106 2.17Ethylbenzene 1 06/14/23 20:59 V34391ENM
0.894 J µg/m3 0.128 2.464-Ethyltoluene 1 06/14/23 20:59 V34391ENM
0.597 J µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 06/14/23 20:59 V34391ENM
1.09 J µg/m3 0.143 2.05Heptane 1 06/14/23 20:59 V34391ENM
<0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 06/14/23 20:59 V34391ENM
0.951 J µg/m3 0.047 1.76n-Hexane 1 06/14/23 20:59 V34391ENM
<0.285 µg/m3 0.285 2.052-Hexanone 1 06/14/23 20:59 V34391ENM
2.91 JB µg/m3 0.139 4.92Isopropyl Alcohol 1 06/14/23 20:59 V34391ENM
15.9 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 06/14/23 20:59 V34391ENM
<0.033 µg/m3 0.033 1.80Methyl tert-butyl ether (MTBE)1 06/14/23 20:59 V34391ENM
22.1 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 06/14/23 20:59 V34391ENM
1.29 J µg/m3 0.488 1.74Methylene Chloride 1 06/14/23 20:59 V34391ENM
<0.183 µg/m3 0.183 2.62Naphthalene 1 06/14/23 20:59 V34391ENM
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 23 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-17
98270 Matrix:
6/10/2023 12:02
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34387 06/14/23 09:00
<0.242 µg/m3 0.242 0.860Propene 1 06/14/23 20:59 V34391ENM
3.48 µg/m3 0.124 2.13
Styrene 1 06/14/23 20:59 V34391ENM
<0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 06/14/23 20:59 V34391ENM
4.25 µg/m3 0.181 3.39Tetrachloroethene 1 06/14/23 20:59 V34391ENM
3.62 µg/m3 0.107 1.47Tetrahydrofuran 1 06/14/23 20:59 V34391ENM
11.5 µg/m3 0.090 1.88Toluene 1 06/14/23 20:59 V34391ENM
<0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 06/14/23 20:59 V34391ENM
<0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 06/14/23 20:59 V34391ENM
<0.087 µg/m3 0.087 2.73
1,1,2-Trichloroethane 1 06/14/23 20:59 V34391ENM
<0.199 µg/m3 0.199 2.15Trichloroethene 1 06/14/23 20:59 V34391ENM
1.65 J µg/m3 0.130 2.81Trichlorofluoromethane 1 06/14/23 20:59 V34391ENM
5.55 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 06/14/23 20:59 V34391ENM
1.24 J µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 06/14/23 20:59 V34391ENM
<0.224 µg/m3 0.224 1.76Vinyl Acetate 1 06/14/23 20:59 V34391ENM
<0.127 µg/m3 0.127 1.28Vinyl Chloride 1 06/14/23 20:59 V34391ENM
3.92 µg/m3 0.157 2.17o-Xylene 1 06/14/23 20:59 V34391ENM
12.4 µg/m3 0.217 5.65m,p-Xylene 1 06/14/23 20:59 V34391ENM
16.3 µg/m3 0.157 2.17Xylene (Total)1 06/14/23 20:59 V34391
Surrogate: 4-Bromofluorobenzene 97.8 Limits: 70-130%06/14/23 20:591 ENM V34391
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 24 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-11
98271 Matrix:
6/10/2023 12:05
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34387 06/14/23 09:00
22.9 µg/m3 0.202 4.75Acetone 1 06/14/23 21:48 V34391ENM
0.680 J
µg/m3 0.073 1.60
Benzene 1 06/14/23 21:48 V34391ENM
<0.147 µg/m3 0.147 10.4Benzyl Chloride 1 06/14/23 21:48 V34391ENM
<0.150 µg/m3 0.150 3.35Bromodichloromethane 1 06/14/23 21:48 V34391ENM
<0.153 µg/m3 0.153 5.17Bromoform 1 06/14/23 21:48 V34391ENM
<0.115 µg/m3 0.115 1.94Bromomethane 1 06/14/23 21:48 V34391ENM
<0.328 µg/m3 0.328 1.111,3-Butadiene 1 06/14/23 21:48 V34391ENM
<0.060 µg/m3 0.060 6.23Carbon Disulfide 1 06/14/23 21:48 V34391ENM
<0.155 µg/m3 0.155 3.15
Carbon Tetrachloride 1 06/14/23 21:48 V34391ENM
<0.107 µg/m3 0.107 2.30Chlorobenzene 1 06/14/23 21:48 V34391ENM
<0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 06/14/23 21:48 V34391ENM
<0.164 µg/m3 0.164 1.32Chloroethane 1 06/14/23 21:48 V34391ENM
<0.086 µg/m3 0.086 2.44Chloroform 1 06/14/23 21:48 V34391ENM
0.842 J µg/m3 0.067 1.03Chloromethane 1 06/14/23 21:48 V34391ENM
<0.161 µg/m3 0.161 3.44Cyclohexane 1 06/14/23 21:48 V34391ENM
<0.151 µg/m3 0.151 3.841,2-Dibromoethane 1 06/14/23 21:48 V34391ENM
<0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 06/14/23 21:48 V34391ENM
<0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 06/14/23 21:48 V34391ENM
<0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 06/14/23 21:48 V34391ENM
2.88 µg/m3 0.134 2.47Dichlorodifluoromethane 1 06/14/23 21:48 V34391ENM
<0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 06/14/23 21:48 V34391ENM
<0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 06/14/23 21:48 V34391ENM
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 25 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-11
98271 Matrix:
6/10/2023 12:05
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34387 06/14/23 09:00
<0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 06/14/23 21:48 V34391ENM
<0.095 µg/m3 0.095 1.98
cis-1,2-Dichloroethene 1 06/14/23 21:48 V34391ENM
<0.108 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 06/14/23 21:48 V34391ENM
<0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 06/14/23 21:48 V34391ENM
<0.622 µg/m3 0.622 3.501,2-Dichlorotetrafluoroethane 1 06/14/23 21:48 V34391ENM
<0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 06/14/23 21:48 V34391ENM
<0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 06/14/23 21:48 V34391ENM
<0.435 µg/m3 0.435 1.801,4-Dioxane 1 06/14/23 21:48 V34391ENM
<0.136 µg/m3 0.136 1.80
Ethyl Acetate 1 06/14/23 21:48 V34391ENM
0.976 J µg/m3 0.106 2.17Ethylbenzene 1 06/14/23 21:48 V34391ENM
<0.128 µg/m3 0.128 2.464-Ethyltoluene 1 06/14/23 21:48 V34391ENM
0.567 J µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 06/14/23 21:48 V34391ENM
0.405 J µg/m3 0.143 2.05Heptane 1 06/14/23 21:48 V34391ENM
<0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 06/14/23 21:48 V34391ENM
0.609 J µg/m3 0.047 1.76n-Hexane 1 06/14/23 21:48 V34391ENM
<0.285 µg/m3 0.285 2.052-Hexanone 1 06/14/23 21:48 V34391ENM
2.77 JB µg/m3 0.139 4.92Isopropyl Alcohol 1 06/14/23 21:48 V34391ENM
3.01 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 06/14/23 21:48 V34391ENM
<0.033 µg/m3 0.033 1.80Methyl tert-butyl ether (MTBE)1 06/14/23 21:48 V34391ENM
1.17 J µg/m3 0.121 2.054-Methyl-2-Pentanone 1 06/14/23 21:48 V34391ENM
0.937 J µg/m3 0.488 1.74Methylene Chloride 1 06/14/23 21:48 V34391ENM
<0.183 µg/m3 0.183 2.62Naphthalene 1 06/14/23 21:48 V34391ENM
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 26 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-11
98271 Matrix:
6/10/2023 12:05
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34387 06/14/23 09:00
<0.242 µg/m3 0.242 0.860Propene 1 06/14/23 21:48 V34391ENM
2.96 µg/m3 0.124 2.13
Styrene 1 06/14/23 21:48 V34391ENM
<0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 06/14/23 21:48 V34391ENM
<0.181 µg/m3 0.181 3.39Tetrachloroethene 1 06/14/23 21:48 V34391ENM
0.645 J µg/m3 0.107 1.47Tetrahydrofuran 1 06/14/23 21:48 V34391ENM
4.83 µg/m3 0.090 1.88Toluene 1 06/14/23 21:48 V34391ENM
<0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 06/14/23 21:48 V34391ENM
<0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 06/14/23 21:48 V34391ENM
<0.087 µg/m3 0.087 2.73
1,1,2-Trichloroethane 1 06/14/23 21:48 V34391ENM
<0.199 µg/m3 0.199 2.15Trichloroethene 1 06/14/23 21:48 V34391ENM
1.66 J µg/m3 0.130 2.81Trichlorofluoromethane 1 06/14/23 21:48 V34391ENM
3.38 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 06/14/23 21:48 V34391ENM
<0.236 µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 06/14/23 21:48 V34391ENM
<0.224 µg/m3 0.224 1.76Vinyl Acetate 1 06/14/23 21:48 V34391ENM
<0.127 µg/m3 0.127 1.28Vinyl Chloride 1 06/14/23 21:48 V34391ENM
0.924 J µg/m3 0.157 2.17o-Xylene 1 06/14/23 21:48 V34391ENM
4.93 J µg/m3 0.217 5.65m,p-Xylene 1 06/14/23 21:48 V34391ENM
5.85 J µg/m3 0.157 2.17Xylene (Total)1 06/14/23 21:48 V34391
Surrogate: 4-Bromofluorobenzene 99.7 Limits: 70-130%06/14/23 21:481 ENM V34391
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 27 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-10
98272 Matrix:
6/10/2023 12:07
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34387 06/14/23 09:00 V34413 06/15/23 09:00
2820 µg/m3 10.1 238Acetone 50 06/15/23 20:11 V34447ENM
0.683 J
µg/m3 0.073 1.60
Benzene 1 06/14/23 22:36 V34391ENM
<0.147 µg/m3 0.147 10.4Benzyl Chloride 1 06/14/23 22:36 V34391ENM
<0.150 µg/m3 0.150 3.35Bromodichloromethane 1 06/14/23 22:36 V34391ENM
<0.153 µg/m3 0.153 5.17Bromoform 1 06/14/23 22:36 V34391ENM
<0.115 µg/m3 0.115 1.94Bromomethane 1 06/14/23 22:36 V34391ENM
<0.328 µg/m3 0.328 1.111,3-Butadiene 1 06/14/23 22:36 V34391ENM
3.36 J µg/m3 0.060 6.23Carbon Disulfide 1 06/14/23 22:36 V34391ENM
<0.155 µg/m3 0.155 3.15
Carbon Tetrachloride 1 06/14/23 22:36 V34391ENM
<0.107 µg/m3 0.107 2.30Chlorobenzene 1 06/14/23 22:36 V34391ENM
<0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 06/14/23 22:36 V34391ENM
<0.164 µg/m3 0.164 1.32Chloroethane 1 06/14/23 22:36 V34391ENM
<0.086 µg/m3 0.086 2.44Chloroform 1 06/14/23 22:36 V34391ENM
0.644 J µg/m3 0.067 1.03Chloromethane 1 06/14/23 22:36 V34391ENM
306 µg/m3 8.05 172Cyclohexane 50 06/15/23 20:11 V34447ENM
<0.151 µg/m3 0.151 3.841,2-Dibromoethane 1 06/14/23 22:36 V34391ENM
<0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 06/14/23 22:36 V34391ENM
<0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 06/14/23 22:36 V34391ENM
<0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 06/14/23 22:36 V34391ENM
2.10 J µg/m3 0.134 2.47Dichlorodifluoromethane 1 06/14/23 22:36 V34391ENM
<0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 06/14/23 22:36 V34391ENM
<0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 06/14/23 22:36 V34391ENM
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 28 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-10
98272 Matrix:
6/10/2023 12:07
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34387 06/14/23 09:00 V34413 06/15/23 09:00
<0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 06/14/23 22:36 V34391ENM
<0.095 µg/m3 0.095 1.98
cis-1,2-Dichloroethene 1 06/14/23 22:36 V34391ENM
<0.108 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 06/14/23 22:36 V34391ENM
<0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 06/14/23 22:36 V34391ENM
<0.622 µg/m3 0.622 3.501,2-Dichlorotetrafluoroethane 1 06/14/23 22:36 V34391ENM
<0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 06/14/23 22:36 V34391ENM
<0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 06/14/23 22:36 V34391ENM
<0.435 µg/m3 0.435 1.801,4-Dioxane 1 06/14/23 22:36 V34391ENM
<0.136 µg/m3 0.136 1.80
Ethyl Acetate 1 06/14/23 22:36 V34391ENM
7.29 µg/m3 0.106 2.17Ethylbenzene 1 06/14/23 22:36 V34391ENM
1.62 J µg/m3 0.128 2.464-Ethyltoluene 1 06/14/23 22:36 V34391ENM
<0.561 µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 06/14/23 22:36 V34391ENM
1.76 J µg/m3 0.143 2.05Heptane 1 06/14/23 22:36 V34391ENM
<0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 06/14/23 22:36 V34391ENM
<0.047 µg/m3 0.047 1.76n-Hexane 1 06/14/23 22:36 V34391ENM
<0.285 µg/m3 0.285 2.052-Hexanone 1 06/14/23 22:36 V34391ENM
<0.139 µg/m3 0.139 4.92Isopropyl Alcohol 1 06/14/23 22:36 V34391ENM
58.1 J µg/m3 11.2 73.7Methyl Ethyl Ketone (MEK)50 06/15/23 20:11 V34447ENM
<0.033 µg/m3 0.033 1.80Methyl tert-butyl ether (MTBE)1 06/14/23 22:36 V34391ENM
0.323 J µg/m3 0.121 2.054-Methyl-2-Pentanone 1 06/14/23 22:36 V34391ENM
0.944 J µg/m3 0.488 1.74Methylene Chloride 1 06/14/23 22:36 V34391ENM
<0.183 µg/m3 0.183 2.62Naphthalene 1 06/14/23 22:36 V34391ENM
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 29 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-10
98272 Matrix:
6/10/2023 12:07
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34387 06/14/23 09:00 V34413 06/15/23 09:00
<0.242 µg/m3 0.242 0.860Propene 1 06/14/23 22:36 V34391ENM
6.38 µg/m3 0.124 2.13
Styrene 1 06/14/23 22:36 V34391ENM
<0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 06/14/23 22:36 V34391ENM
<0.181 µg/m3 0.181 3.39Tetrachloroethene 1 06/14/23 22:36 V34391ENM
271 µg/m3 5.35 73.7Tetrahydrofuran 50 06/15/23 20:11 V34447ENM
1240 µg/m3 4.50 94.2Toluene 50 06/15/23 20:11 V34447ENM
<0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 06/14/23 22:36 V34391ENM
<0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 06/14/23 22:36 V34391ENM
<0.087 µg/m3 0.087 2.73
1,1,2-Trichloroethane 1 06/14/23 22:36 V34391ENM
<0.199 µg/m3 0.199 2.15Trichloroethene 1 06/14/23 22:36 V34391ENM
1.34 J µg/m3 0.130 2.81Trichlorofluoromethane 1 06/14/23 22:36 V34391ENM
9.89 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 06/14/23 22:36 V34391ENM
3.07 µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 06/14/23 22:36 V34391ENM
<0.224 µg/m3 0.224 1.76Vinyl Acetate 1 06/14/23 22:36 V34391ENM
<0.127 µg/m3 0.127 1.28Vinyl Chloride 1 06/14/23 22:36 V34391ENM
9.85 µg/m3 0.157 2.17o-Xylene 1 06/14/23 22:36 V34391ENM
29.8 µg/m3 0.217 5.65m,p-Xylene 1 06/14/23 22:36 V34391ENM
39.7 µg/m3 0.157 2.17Xylene (Total)1 06/14/23 22:36 V34391
Surrogate: 4-Bromofluorobenzene 105 Limits: 70-130%06/14/23 22:361 ENM V34391
Surrogate: 4-Bromofluorobenzene 94.7 Limits: 70-130%06/15/23 20:1150 ENM V34447
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 30 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-13
98273 Matrix:
6/10/2023 11:52
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34387 06/14/23 09:00
44.4 µg/m3 0.202 4.75Acetone 1 06/14/23 23:23 V34391ENM
0.635 J
µg/m3 0.073 1.60
Benzene 1 06/14/23 23:23 V34391ENM
<0.147 µg/m3 0.147 10.4Benzyl Chloride 1 06/14/23 23:23 V34391ENM
<0.150 µg/m3 0.150 3.35Bromodichloromethane 1 06/14/23 23:23 V34391ENM
<0.153 µg/m3 0.153 5.17Bromoform 1 06/14/23 23:23 V34391ENM
<0.115 µg/m3 0.115 1.94Bromomethane 1 06/14/23 23:23 V34391ENM
<0.328 µg/m3 0.328 1.111,3-Butadiene 1 06/14/23 23:23 V34391ENM
<0.060 µg/m3 0.060 6.23Carbon Disulfide 1 06/14/23 23:23 V34391ENM
<0.155 µg/m3 0.155 3.15
Carbon Tetrachloride 1 06/14/23 23:23 V34391ENM
<0.107 µg/m3 0.107 2.30Chlorobenzene 1 06/14/23 23:23 V34391ENM
<0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 06/14/23 23:23 V34391ENM
<0.164 µg/m3 0.164 1.32Chloroethane 1 06/14/23 23:23 V34391ENM
<0.086 µg/m3 0.086 2.44Chloroform 1 06/14/23 23:23 V34391ENM
0.920 J µg/m3 0.067 1.03Chloromethane 1 06/14/23 23:23 V34391ENM
<0.161 µg/m3 0.161 3.44Cyclohexane 1 06/14/23 23:23 V34391ENM
<0.151 µg/m3 0.151 3.841,2-Dibromoethane 1 06/14/23 23:23 V34391ENM
<0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 06/14/23 23:23 V34391ENM
0.763 J µg/m3 0.174 12.01,3-Dichlorobenzene 1 06/14/23 23:23 V34391ENM
<0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 06/14/23 23:23 V34391ENM
2.84 µg/m3 0.134 2.47Dichlorodifluoromethane 1 06/14/23 23:23 V34391ENM
<0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 06/14/23 23:23 V34391ENM
<0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 06/14/23 23:23 V34391ENM
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 31 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-13
98273 Matrix:
6/10/2023 11:52
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34387 06/14/23 09:00
<0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 06/14/23 23:23 V34391ENM
<0.095 µg/m3 0.095 1.98
cis-1,2-Dichloroethene 1 06/14/23 23:23 V34391ENM
1.20 J µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 06/14/23 23:23 V34391ENM
<0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 06/14/23 23:23 V34391ENM
<0.622 µg/m3 0.622 3.501,2-Dichlorotetrafluoroethane 1 06/14/23 23:23 V34391ENM
<0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 06/14/23 23:23 V34391ENM
<0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 06/14/23 23:23 V34391ENM
<0.435 µg/m3 0.435 1.801,4-Dioxane 1 06/14/23 23:23 V34391ENM
<0.136 µg/m3 0.136 1.80
Ethyl Acetate 1 06/14/23 23:23 V34391ENM
1.26 J µg/m3 0.106 2.17Ethylbenzene 1 06/14/23 23:23 V34391ENM
0.624 J µg/m3 0.128 2.464-Ethyltoluene 1 06/14/23 23:23 V34391ENM
0.590 J µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 06/14/23 23:23 V34391ENM
0.938 J µg/m3 0.143 2.05Heptane 1 06/14/23 23:23 V34391ENM
<0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 06/14/23 23:23 V34391ENM
0.574 J µg/m3 0.047 1.76n-Hexane 1 06/14/23 23:23 V34391ENM
<0.285 µg/m3 0.285 2.052-Hexanone 1 06/14/23 23:23 V34391ENM
3.13 JB µg/m3 0.139 4.92Isopropyl Alcohol 1 06/14/23 23:23 V34391ENM
15.2 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 06/14/23 23:23 V34391ENM
<0.033 µg/m3 0.033 1.80Methyl tert-butyl ether (MTBE)1 06/14/23 23:23 V34391ENM
8.19 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 06/14/23 23:23 V34391ENM
3.85 µg/m3 0.488 1.74Methylene Chloride 1 06/14/23 23:23 V34391ENM
<0.183 µg/m3 0.183 2.62Naphthalene 1 06/14/23 23:23 V34391ENM
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 32 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-13
98273 Matrix:
6/10/2023 11:52
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34387 06/14/23 09:00
<0.242 µg/m3 0.242 0.860Propene 1 06/14/23 23:23 V34391ENM
3.49 µg/m3 0.124 2.13
Styrene 1 06/14/23 23:23 V34391ENM
<0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 06/14/23 23:23 V34391ENM
1.29 J µg/m3 0.181 3.39Tetrachloroethene 1 06/14/23 23:23 V34391ENM
1.44 J µg/m3 0.107 1.47Tetrahydrofuran 1 06/14/23 23:23 V34391ENM
7.08 µg/m3 0.090 1.88Toluene 1 06/14/23 23:23 V34391ENM
<0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 06/14/23 23:23 V34391ENM
<0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 06/14/23 23:23 V34391ENM
<0.087 µg/m3 0.087 2.73
1,1,2-Trichloroethane 1 06/14/23 23:23 V34391ENM
<0.199 µg/m3 0.199 2.15Trichloroethene 1 06/14/23 23:23 V34391ENM
1.53 J µg/m3 0.130 2.81Trichlorofluoromethane 1 06/14/23 23:23 V34391ENM
4.55 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 06/14/23 23:23 V34391ENM
0.830 J µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 06/14/23 23:23 V34391ENM
<0.224 µg/m3 0.224 1.76Vinyl Acetate 1 06/14/23 23:23 V34391ENM
<0.127 µg/m3 0.127 1.28Vinyl Chloride 1 06/14/23 23:23 V34391ENM
2.14 J µg/m3 0.157 2.17o-Xylene 1 06/14/23 23:23 V34391ENM
6.37 µg/m3 0.217 5.65m,p-Xylene 1 06/14/23 23:23 V34391ENM
8.51 J µg/m3 0.157 2.17Xylene (Total)1 06/14/23 23:23 V34391
Surrogate: 4-Bromofluorobenzene 98.0 Limits: 70-130%06/14/23 23:231 ENM V34391
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 33 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:OA
98274 Matrix:
6/10/2023 12:14
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34387 06/14/23 09:00
15.3 µg/m3 0.202 4.75Acetone 1 06/15/23 00:11 V34391ENM
0.859 J
µg/m3 0.073 1.60
Benzene 1 06/15/23 00:11 V34391ENM
<0.147 µg/m3 0.147 10.4Benzyl Chloride 1 06/15/23 00:11 V34391ENM
<0.150 µg/m3 0.150 3.35Bromodichloromethane 1 06/15/23 00:11 V34391ENM
<0.153 µg/m3 0.153 5.17Bromoform 1 06/15/23 00:11 V34391ENM
<0.115 µg/m3 0.115 1.94Bromomethane 1 06/15/23 00:11 V34391ENM
<0.328 µg/m3 0.328 1.111,3-Butadiene 1 06/15/23 00:11 V34391ENM
<0.060 µg/m3 0.060 6.23Carbon Disulfide 1 06/15/23 00:11 V34391ENM
<0.155 µg/m3 0.155 3.15
Carbon Tetrachloride 1 06/15/23 00:11 V34391ENM
<0.107 µg/m3 0.107 2.30Chlorobenzene 1 06/15/23 00:11 V34391ENM
<0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 06/15/23 00:11 V34391ENM
<0.164 µg/m3 0.164 1.32Chloroethane 1 06/15/23 00:11 V34391ENM
<0.086 µg/m3 0.086 2.44Chloroform 1 06/15/23 00:11 V34391ENM
0.916 J µg/m3 0.067 1.03Chloromethane 1 06/15/23 00:11 V34391ENM
<0.161 µg/m3 0.161 3.44Cyclohexane 1 06/15/23 00:11 V34391ENM
<0.151 µg/m3 0.151 3.841,2-Dibromoethane 1 06/15/23 00:11 V34391ENM
<0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 06/15/23 00:11 V34391ENM
<0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 06/15/23 00:11 V34391ENM
<0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 06/15/23 00:11 V34391ENM
2.89 µg/m3 0.134 2.47Dichlorodifluoromethane 1 06/15/23 00:11 V34391ENM
<0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 06/15/23 00:11 V34391ENM
<0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 06/15/23 00:11 V34391ENM
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 34 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:OA
98274 Matrix:
6/10/2023 12:14
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34387 06/14/23 09:00
<0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 06/15/23 00:11 V34391ENM
<0.095 µg/m3 0.095 1.98
cis-1,2-Dichloroethene 1 06/15/23 00:11 V34391ENM
0.547 J µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 06/15/23 00:11 V34391ENM
<0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 06/15/23 00:11 V34391ENM
<0.622 µg/m3 0.622 3.501,2-Dichlorotetrafluoroethane 1 06/15/23 00:11 V34391ENM
<0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 06/15/23 00:11 V34391ENM
<0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 06/15/23 00:11 V34391ENM
<0.435 µg/m3 0.435 1.801,4-Dioxane 1 06/15/23 00:11 V34391ENM
<0.136 µg/m3 0.136 1.80
Ethyl Acetate 1 06/15/23 00:11 V34391ENM
0.316 J µg/m3 0.106 2.17Ethylbenzene 1 06/15/23 00:11 V34391ENM
<0.128 µg/m3 0.128 2.464-Ethyltoluene 1 06/15/23 00:11 V34391ENM
0.597 J µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 06/15/23 00:11 V34391ENM
0.344 J µg/m3 0.143 2.05Heptane 1 06/15/23 00:11 V34391ENM
<0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 06/15/23 00:11 V34391ENM
0.595 J µg/m3 0.047 1.76n-Hexane 1 06/15/23 00:11 V34391ENM
<0.285 µg/m3 0.285 2.052-Hexanone 1 06/15/23 00:11 V34391ENM
1.78 JB µg/m3 0.139 4.92Isopropyl Alcohol 1 06/15/23 00:11 V34391ENM
1.75 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 06/15/23 00:11 V34391ENM
<0.033 µg/m3 0.033 1.80Methyl tert-butyl ether (MTBE)1 06/15/23 00:11 V34391ENM
<0.121 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 06/15/23 00:11 V34391ENM
1.09 J µg/m3 0.488 1.74Methylene Chloride 1 06/15/23 00:11 V34391ENM
<0.183 µg/m3 0.183 2.62Naphthalene 1 06/15/23 00:11 V34391ENM
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 35 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:OA
98274 Matrix:
6/10/2023 12:14
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34387 06/14/23 09:00
1.05 µg/m3 0.242 0.860Propene 1 06/15/23 00:11 V34391ENM
<0.124 µg/m3 0.124 2.13
Styrene 1 06/15/23 00:11 V34391ENM
<0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 06/15/23 00:11 V34391ENM
2.25 J µg/m3 0.181 3.39Tetrachloroethene 1 06/15/23 00:11 V34391ENM
0.787 J µg/m3 0.107 1.47Tetrahydrofuran 1 06/15/23 00:11 V34391ENM
2.55 B µg/m3 0.090 1.88Toluene 1 06/15/23 00:11 V34391ENM
<0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 06/15/23 00:11 V34391ENM
<0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 06/15/23 00:11 V34391ENM
<0.087 µg/m3 0.087 2.73
1,1,2-Trichloroethane 1 06/15/23 00:11 V34391ENM
<0.199 µg/m3 0.199 2.15Trichloroethene 1 06/15/23 00:11 V34391ENM
1.62 J µg/m3 0.130 2.81Trichlorofluoromethane 1 06/15/23 00:11 V34391ENM
<0.110 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 06/15/23 00:11 V34391ENM
<0.236 µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 06/15/23 00:11 V34391ENM
<0.224 µg/m3 0.224 1.76Vinyl Acetate 1 06/15/23 00:11 V34391ENM
<0.127 µg/m3 0.127 1.28Vinyl Chloride 1 06/15/23 00:11 V34391ENM
0.377 J µg/m3 0.157 2.17o-Xylene 1 06/15/23 00:11 V34391ENM
3.08 J µg/m3 0.217 5.65m,p-Xylene 1 06/15/23 00:11 V34391ENM
3.46 J µg/m3 0.157 2.17Xylene (Total)1 06/15/23 00:11 V34391
Surrogate: 4-Bromofluorobenzene 96.1 Limits: 70-130%06/15/23 00:111 ENM V34391
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 36 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-15
98275 Matrix:
6/10/2023 11:58
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34413 06/15/23 09:00
56.5 µg/m3 0.202 4.75Acetone 1 06/15/23 21:10 V34447ENM
0.827 J
µg/m3 0.073 1.60
Benzene 1 06/15/23 21:10 V34447ENM
<0.147 µg/m3 0.147 10.4Benzyl Chloride 1 06/15/23 21:10 V34447ENM
<0.150 µg/m3 0.150 3.35Bromodichloromethane 1 06/15/23 21:10 V34447ENM
<0.153 µg/m3 0.153 5.17Bromoform 1 06/15/23 21:10 V34447ENM
<0.115 µg/m3 0.115 1.94Bromomethane 1 06/15/23 21:10 V34447ENM
<0.328 µg/m3 0.328 1.111,3-Butadiene 1 06/15/23 21:10 V34447ENM
0.292 J µg/m3 0.060 6.23Carbon Disulfide 1 06/15/23 21:10 V34447ENM
<0.155 µg/m3 0.155 3.15
Carbon Tetrachloride 1 06/15/23 21:10 V34447ENM
0.497 J µg/m3 0.107 2.30Chlorobenzene 1 06/15/23 21:10 V34447ENM
<0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 06/15/23 21:10 V34447ENM
<0.164 µg/m3 0.164 1.32Chloroethane 1 06/15/23 21:10 V34447ENM
<0.086 µg/m3 0.086 2.44Chloroform 1 06/15/23 21:10 V34447ENM
<0.067 µg/m3 0.067 1.03Chloromethane 1 06/15/23 21:10 V34447ENM
<0.161 µg/m3 0.161 3.44Cyclohexane 1 06/15/23 21:10 V34447ENM
<0.151 µg/m3 0.151 3.841,2-Dibromoethane 1 06/15/23 21:10 V34447ENM
<0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 06/15/23 21:10 V34447ENM
1.77 J µg/m3 0.174 12.01,3-Dichlorobenzene 1 06/15/23 21:10 V34447ENM
<0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 06/15/23 21:10 V34447ENM
3.02 µg/m3 0.134 2.47Dichlorodifluoromethane 1 06/15/23 21:10 V34447ENM
<0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 06/15/23 21:10 V34447ENM
<0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 06/15/23 21:10 V34447ENM
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 37 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-15
98275 Matrix:
6/10/2023 11:58
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34413 06/15/23 09:00
<0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 06/15/23 21:10 V34447ENM
<0.095 µg/m3 0.095 1.98
cis-1,2-Dichloroethene 1 06/15/23 21:10 V34447ENM
5.74 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 06/15/23 21:10 V34447ENM
<0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 06/15/23 21:10 V34447ENM
<0.622 µg/m3 0.622 3.501,2-Dichlorotetrafluoroethane 1 06/15/23 21:10 V34447ENM
<0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 06/15/23 21:10 V34447ENM
<0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 06/15/23 21:10 V34447ENM
<0.435 µg/m3 0.435 1.801,4-Dioxane 1 06/15/23 21:10 V34447ENM
0.677 J
µg/m3 0.136 1.80
Ethyl Acetate 1 06/15/23 21:10 V34447ENM
4.45 µg/m3 0.106 2.17Ethylbenzene 1 06/15/23 21:10 V34447ENM
4.04 µg/m3 0.128 2.464-Ethyltoluene 1 06/15/23 21:10 V34447ENM
0.567 J µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 06/15/23 21:10 V34447ENM
2.23 µg/m3 0.143 2.05Heptane 1 06/15/23 21:10 V34447ENM
<0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 06/15/23 21:10 V34447ENM
0.884 J µg/m3 0.047 1.76n-Hexane 1 06/15/23 21:10 V34447ENM
<0.285 µg/m3 0.285 2.052-Hexanone 1 06/15/23 21:10 V34447ENM
3.27 JB µg/m3 0.139 4.92Isopropyl Alcohol 1 06/15/23 21:10 V34447ENM
20.0 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 06/15/23 21:10 V34447ENM
<0.033 µg/m3 0.033 1.80Methyl tert-butyl ether (MTBE)1 06/15/23 21:10 V34447ENM
16.3 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 06/15/23 21:10 V34447ENM
4.67 µg/m3 0.488 1.74Methylene Chloride 1 06/15/23 21:10 V34447ENM
<0.183 µg/m3 0.183 2.62Naphthalene 1 06/15/23 21:10 V34447ENM
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 38 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-15
98275 Matrix:
6/10/2023 11:58
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34413 06/15/23 09:00
<0.242 µg/m3 0.242 0.860Propene 1 06/15/23 21:10 V34447ENM
5.40 µg/m3 0.124 2.13
Styrene 1 06/15/23 21:10 V34447ENM
<0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 06/15/23 21:10 V34447ENM
<0.181 µg/m3 0.181 3.39Tetrachloroethene 1 06/15/23 21:10 V34447ENM
7.48 µg/m3 0.107 1.47Tetrahydrofuran 1 06/15/23 21:10 V34447ENM
17.2 µg/m3 0.090 1.88Toluene 1 06/15/23 21:10 V34447ENM
<0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 06/15/23 21:10 V34447ENM
<0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 06/15/23 21:10 V34447ENM
<0.087 µg/m3 0.087 2.73
1,1,2-Trichloroethane 1 06/15/23 21:10 V34447ENM
<0.199 µg/m3 0.199 2.15Trichloroethene 1 06/15/23 21:10 V34447ENM
1.93 J µg/m3 0.130 2.81Trichlorofluoromethane 1 06/15/23 21:10 V34447ENM
14.8 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 06/15/23 21:10 V34447ENM
5.39 µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 06/15/23 21:10 V34447ENM
<0.224 µg/m3 0.224 1.76Vinyl Acetate 1 06/15/23 21:10 V34447ENM
<0.127 µg/m3 0.127 1.28Vinyl Chloride 1 06/15/23 21:10 V34447ENM
7.67 µg/m3 0.157 2.17o-Xylene 1 06/15/23 21:10 V34447ENM
17.5 µg/m3 0.217 5.65m,p-Xylene 1 06/15/23 21:10 V34447ENM
25.2 µg/m3 0.157 2.17Xylene (Total)1 06/15/23 21:10 V34447
Surrogate: 4-Bromofluorobenzene 99.7 Limits: 70-130%06/15/23 21:101 ENM V34447
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 39 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-16
98276 Matrix:
6/10/2023 11:56
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34469 06/16/23 09:00
72.5 µg/m3 0.202 4.75Acetone 1 06/16/23 22:49 V34471ENM
0.824 J
µg/m3 0.073 1.60
Benzene 1 06/16/23 22:49 V34471ENM
<0.147 µg/m3 0.147 10.4Benzyl Chloride 1 06/16/23 22:49 V34471ENM
<0.150 µg/m3 0.150 3.35Bromodichloromethane 1 06/16/23 22:49 V34471ENM
<0.153 µg/m3 0.153 5.17Bromoform 1 06/16/23 22:49 V34471ENM
<0.115 µg/m3 0.115 1.94Bromomethane 1 06/16/23 22:49 V34471ENM
<0.328 µg/m3 0.328 1.111,3-Butadiene 1 06/16/23 22:49 V34471ENM
<0.060 µg/m3 0.060 6.23Carbon Disulfide 1 06/16/23 22:49 V34471ENM
<0.155 µg/m3 0.155 3.15
Carbon Tetrachloride 1 06/16/23 22:49 V34471ENM
<0.107 µg/m3 0.107 2.30Chlorobenzene 1 06/16/23 22:49 V34471ENM
<0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 06/16/23 22:49 V34471ENM
<0.164 µg/m3 0.164 1.32Chloroethane 1 06/16/23 22:49 V34471ENM
<0.086 µg/m3 0.086 2.44Chloroform 1 06/16/23 22:49 V34471ENM
0.910 J µg/m3 0.067 1.03Chloromethane 1 06/16/23 22:49 V34471ENM
2.95 J µg/m3 0.161 3.44Cyclohexane 1 06/16/23 22:49 V34471ENM
<0.151 µg/m3 0.151 3.841,2-Dibromoethane 1 06/16/23 22:49 V34471ENM
<0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 06/16/23 22:49 V34471ENM
2.37 J µg/m3 0.174 12.01,3-Dichlorobenzene 1 06/16/23 22:49 V34471ENM
<0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 06/16/23 22:49 V34471ENM
2.86 µg/m3 0.134 2.47Dichlorodifluoromethane 1 06/16/23 22:49 V34471ENM
<0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 06/16/23 22:49 V34471ENM
<0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 06/16/23 22:49 V34471ENM
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 40 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-16
98276 Matrix:
6/10/2023 11:56
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34469 06/16/23 09:00
<0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 06/16/23 22:49 V34471ENM
<0.095 µg/m3 0.095 1.98
cis-1,2-Dichloroethene 1 06/16/23 22:49 V34471ENM
33.9 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 06/16/23 22:49 V34471ENM
<0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 06/16/23 22:49 V34471ENM
<0.622 µg/m3 0.622 3.501,2-Dichlorotetrafluoroethane 1 06/16/23 22:49 V34471ENM
<0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 06/16/23 22:49 V34471ENM
<0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 06/16/23 22:49 V34471ENM
<0.435 µg/m3 0.435 1.801,4-Dioxane 1 06/16/23 22:49 V34471ENM
0.918 J
µg/m3 0.136 1.80
Ethyl Acetate 1 06/16/23 22:49 V34471ENM
4.45 µg/m3 0.106 2.17Ethylbenzene 1 06/16/23 22:49 V34471ENM
1.46 J µg/m3 0.128 2.464-Ethyltoluene 1 06/16/23 22:49 V34471ENM
0.620 J µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 06/16/23 22:49 V34471ENM
2.75 µg/m3 0.143 2.05Heptane 1 06/16/23 22:49 V34471ENM
<0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 06/16/23 22:49 V34471ENM
0.944 J µg/m3 0.047 1.76n-Hexane 1 06/16/23 22:49 V34471ENM
<0.285 µg/m3 0.285 2.052-Hexanone 1 06/16/23 22:49 V34471ENM
5.07 µg/m3 0.139 4.92Isopropyl Alcohol 1 06/16/23 22:49 V34471ENM
23.2 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 06/16/23 22:49 V34471ENM
<0.033 µg/m3 0.033 1.80Methyl tert-butyl ether (MTBE)1 06/16/23 22:49 V34471ENM
22.7 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 06/16/23 22:49 V34471ENM
4.73 µg/m3 0.488 1.74Methylene Chloride 1 06/16/23 22:49 V34471ENM
<0.183 µg/m3 0.183 2.62Naphthalene 1 06/16/23 22:49 V34471ENM
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 41 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-16
98276 Matrix:
6/10/2023 11:56
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34469 06/16/23 09:00
<0.242 µg/m3 0.242 0.860Propene 1 06/16/23 22:49 V34471ENM
4.35 µg/m3 0.124 2.13
Styrene 1 06/16/23 22:49 V34471ENM
<0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 06/16/23 22:49 V34471ENM
<0.181 µg/m3 0.181 3.39Tetrachloroethene 1 06/16/23 22:49 V34471ENM
9.68 µg/m3 0.107 1.47Tetrahydrofuran 1 06/16/23 22:49 V34471ENM
15.5 µg/m3 0.090 1.88Toluene 1 06/16/23 22:49 V34471ENM
<0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 06/16/23 22:49 V34471ENM
<0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 06/16/23 22:49 V34471ENM
<0.087 µg/m3 0.087 2.73
1,1,2-Trichloroethane 1 06/16/23 22:49 V34471ENM
<0.199 µg/m3 0.199 2.15Trichloroethene 1 06/16/23 22:49 V34471ENM
1.65 J µg/m3 0.130 2.81Trichlorofluoromethane 1 06/16/23 22:49 V34471ENM
6.66 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 06/16/23 22:49 V34471ENM
1.77 J µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 06/16/23 22:49 V34471ENM
<0.224 µg/m3 0.224 1.76Vinyl Acetate 1 06/16/23 22:49 V34471ENM
<0.127 µg/m3 0.127 1.28Vinyl Chloride 1 06/16/23 22:49 V34471ENM
5.83 µg/m3 0.157 2.17o-Xylene 1 06/16/23 22:49 V34471ENM
17.1 µg/m3 0.217 5.65m,p-Xylene 1 06/16/23 22:49 V34471ENM
22.9 µg/m3 0.157 2.17Xylene (Total)1 06/16/23 22:49 V34471
Surrogate: 4-Bromofluorobenzene 96.9 Limits: 70-130%06/16/23 22:491 ENM V34471
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 42 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-12
98277 Matrix:
6/10/2023 11:49
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34469 06/16/23 09:00
71.7 µg/m3 0.202 4.75Acetone 1 06/16/23 23:37 V34471ENM
0.776 J
µg/m3 0.073 1.60
Benzene 1 06/16/23 23:37 V34471ENM
<0.147 µg/m3 0.147 10.4Benzyl Chloride 1 06/16/23 23:37 V34471ENM
<0.150 µg/m3 0.150 3.35Bromodichloromethane 1 06/16/23 23:37 V34471ENM
<0.153 µg/m3 0.153 5.17Bromoform 1 06/16/23 23:37 V34471ENM
<0.115 µg/m3 0.115 1.94Bromomethane 1 06/16/23 23:37 V34471ENM
<0.328 µg/m3 0.328 1.111,3-Butadiene 1 06/16/23 23:37 V34471ENM
<0.060 µg/m3 0.060 6.23Carbon Disulfide 1 06/16/23 23:37 V34471ENM
<0.155 µg/m3 0.155 3.15
Carbon Tetrachloride 1 06/16/23 23:37 V34471ENM
<0.107 µg/m3 0.107 2.30Chlorobenzene 1 06/16/23 23:37 V34471ENM
<0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 06/16/23 23:37 V34471ENM
<0.164 µg/m3 0.164 1.32Chloroethane 1 06/16/23 23:37 V34471ENM
<0.086 µg/m3 0.086 2.44Chloroform 1 06/16/23 23:37 V34471ENM
0.997 J µg/m3 0.067 1.03Chloromethane 1 06/16/23 23:37 V34471ENM
<0.161 µg/m3 0.161 3.44Cyclohexane 1 06/16/23 23:37 V34471ENM
<0.151 µg/m3 0.151 3.841,2-Dibromoethane 1 06/16/23 23:37 V34471ENM
<0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 06/16/23 23:37 V34471ENM
3.36 J µg/m3 0.174 12.01,3-Dichlorobenzene 1 06/16/23 23:37 V34471ENM
<0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 06/16/23 23:37 V34471ENM
2.94 µg/m3 0.134 2.47Dichlorodifluoromethane 1 06/16/23 23:37 V34471ENM
<0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 06/16/23 23:37 V34471ENM
<0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 06/16/23 23:37 V34471ENM
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 43 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-12
98277 Matrix:
6/10/2023 11:49
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34469 06/16/23 09:00
<0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 06/16/23 23:37 V34471ENM
<0.095 µg/m3 0.095 1.98
cis-1,2-Dichloroethene 1 06/16/23 23:37 V34471ENM
85.8 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 06/16/23 23:37 V34471ENM
<0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 06/16/23 23:37 V34471ENM
<0.622 µg/m3 0.622 3.501,2-Dichlorotetrafluoroethane 1 06/16/23 23:37 V34471ENM
<0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 06/16/23 23:37 V34471ENM
<0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 06/16/23 23:37 V34471ENM
<0.435 µg/m3 0.435 1.801,4-Dioxane 1 06/16/23 23:37 V34471ENM
<0.136 µg/m3 0.136 1.80
Ethyl Acetate 1 06/16/23 23:37 V34471ENM
2.28 µg/m3 0.106 2.17Ethylbenzene 1 06/16/23 23:37 V34471ENM
0.752 J µg/m3 0.128 2.464-Ethyltoluene 1 06/16/23 23:37 V34471ENM
0.613 J µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 06/16/23 23:37 V34471ENM
3.50 µg/m3 0.143 2.05Heptane 1 06/16/23 23:37 V34471ENM
<0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 06/16/23 23:37 V34471ENM
2.32 µg/m3 0.047 1.76n-Hexane 1 06/16/23 23:37 V34471ENM
<0.285 µg/m3 0.285 2.052-Hexanone 1 06/16/23 23:37 V34471ENM
3.07 JB µg/m3 0.139 4.92Isopropyl Alcohol 1 06/16/23 23:37 V34471ENM
13.0 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 06/16/23 23:37 V34471ENM
<0.033 µg/m3 0.033 1.80Methyl tert-butyl ether (MTBE)1 06/16/23 23:37 V34471ENM
13.4 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 06/16/23 23:37 V34471ENM
3.11 µg/m3 0.488 1.74Methylene Chloride 1 06/16/23 23:37 V34471ENM
<0.183 µg/m3 0.183 2.62Naphthalene 1 06/16/23 23:37 V34471ENM
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 44 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-12
98277 Matrix:
6/10/2023 11:49
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34469 06/16/23 09:00
<0.242 µg/m3 0.242 0.860Propene 1 06/16/23 23:37 V34471ENM
3.82 µg/m3 0.124 2.13
Styrene 1 06/16/23 23:37 V34471ENM
<0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 06/16/23 23:37 V34471ENM
<0.181 µg/m3 0.181 3.39Tetrachloroethene 1 06/16/23 23:37 V34471ENM
13.5 µg/m3 0.107 1.47Tetrahydrofuran 1 06/16/23 23:37 V34471ENM
11.5 µg/m3 0.090 1.88Toluene 1 06/16/23 23:37 V34471ENM
<0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 06/16/23 23:37 V34471ENM
<0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 06/16/23 23:37 V34471ENM
<0.087 µg/m3 0.087 2.73
1,1,2-Trichloroethane 1 06/16/23 23:37 V34471ENM
<0.199 µg/m3 0.199 2.15Trichloroethene 1 06/16/23 23:37 V34471ENM
1.60 J µg/m3 0.130 2.81Trichlorofluoromethane 1 06/16/23 23:37 V34471ENM
5.09 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 06/16/23 23:37 V34471ENM
1.07 J µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 06/16/23 23:37 V34471ENM
<0.224 µg/m3 0.224 1.76Vinyl Acetate 1 06/16/23 23:37 V34471ENM
<0.127 µg/m3 0.127 1.28Vinyl Chloride 1 06/16/23 23:37 V34471ENM
3.03 µg/m3 0.157 2.17o-Xylene 1 06/16/23 23:37 V34471ENM
9.59 µg/m3 0.217 5.65m,p-Xylene 1 06/16/23 23:37 V34471ENM
12.6 µg/m3 0.157 2.17Xylene (Total)1 06/16/23 23:37 V34471
Surrogate: 4-Bromofluorobenzene 97.8 Limits: 70-130%06/16/23 23:371 ENM V34471
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 45 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-DUP
98278 Matrix:
6/10/2023 11:49
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34469 06/16/23 09:00
68.2 µg/m3 0.202 4.75Acetone 1 06/17/23 00:24 V34471ENM
0.773 J
µg/m3 0.073 1.60
Benzene 1 06/17/23 00:24 V34471ENM
<0.147 µg/m3 0.147 10.4Benzyl Chloride 1 06/17/23 00:24 V34471ENM
<0.150 µg/m3 0.150 3.35Bromodichloromethane 1 06/17/23 00:24 V34471ENM
<0.153 µg/m3 0.153 5.17Bromoform 1 06/17/23 00:24 V34471ENM
<0.115 µg/m3 0.115 1.94Bromomethane 1 06/17/23 00:24 V34471ENM
<0.328 µg/m3 0.328 1.111,3-Butadiene 1 06/17/23 00:24 V34471ENM
<0.060 µg/m3 0.060 6.23Carbon Disulfide 1 06/17/23 00:24 V34471ENM
0.566 J
µg/m3 0.155 3.15
Carbon Tetrachloride 1 06/17/23 00:24 V34471ENM
<0.107 µg/m3 0.107 2.30Chlorobenzene 1 06/17/23 00:24 V34471ENM
<0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 06/17/23 00:24 V34471ENM
<0.164 µg/m3 0.164 1.32Chloroethane 1 06/17/23 00:24 V34471ENM
<0.086 µg/m3 0.086 2.44Chloroform 1 06/17/23 00:24 V34471ENM
0.980 J µg/m3 0.067 1.03Chloromethane 1 06/17/23 00:24 V34471ENM
3.00 J µg/m3 0.161 3.44Cyclohexane 1 06/17/23 00:24 V34471ENM
<0.151 µg/m3 0.151 3.841,2-Dibromoethane 1 06/17/23 00:24 V34471ENM
<0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 06/17/23 00:24 V34471ENM
3.37 J µg/m3 0.174 12.01,3-Dichlorobenzene 1 06/17/23 00:24 V34471ENM
<0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 06/17/23 00:24 V34471ENM
2.86 µg/m3 0.134 2.47Dichlorodifluoromethane 1 06/17/23 00:24 V34471ENM
<0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 06/17/23 00:24 V34471ENM
<0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 06/17/23 00:24 V34471ENM
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 46 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-DUP
98278 Matrix:
6/10/2023 11:49
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34469 06/16/23 09:00
<0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 06/17/23 00:24 V34471ENM
<0.095 µg/m3 0.095 1.98
cis-1,2-Dichloroethene 1 06/17/23 00:24 V34471ENM
85.2 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 06/17/23 00:24 V34471ENM
<0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 06/17/23 00:24 V34471ENM
<0.622 µg/m3 0.622 3.501,2-Dichlorotetrafluoroethane 1 06/17/23 00:24 V34471ENM
<0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 06/17/23 00:24 V34471ENM
<0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 06/17/23 00:24 V34471ENM
<0.435 µg/m3 0.435 1.801,4-Dioxane 1 06/17/23 00:24 V34471ENM
<0.136 µg/m3 0.136 1.80
Ethyl Acetate 1 06/17/23 00:24 V34471ENM
2.21 µg/m3 0.106 2.17Ethylbenzene 1 06/17/23 00:24 V34471ENM
0.722 J µg/m3 0.128 2.464-Ethyltoluene 1 06/17/23 00:24 V34471ENM
0.613 J µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 06/17/23 00:24 V34471ENM
3.33 µg/m3 0.143 2.05Heptane 1 06/17/23 00:24 V34471ENM
<0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 06/17/23 00:24 V34471ENM
0.722 J µg/m3 0.047 1.76n-Hexane 1 06/17/23 00:24 V34471ENM
<0.285 µg/m3 0.285 2.052-Hexanone 1 06/17/23 00:24 V34471ENM
3.09 JB µg/m3 0.139 4.92Isopropyl Alcohol 1 06/17/23 00:24 V34471ENM
12.9 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 06/17/23 00:24 V34471ENM
<0.033 µg/m3 0.033 1.80Methyl tert-butyl ether (MTBE)1 06/17/23 00:24 V34471ENM
13.4 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 06/17/23 00:24 V34471ENM
2.91 µg/m3 0.488 1.74Methylene Chloride 1 06/17/23 00:24 V34471ENM
<0.183 µg/m3 0.183 2.62Naphthalene 1 06/17/23 00:24 V34471ENM
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 47 of 68
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-165-0001
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/13/2023
North Hills Expansion
Report Date : 06/19/2023
Sample ID :
Lab No :
Sampled:IA-DUP
98278 Matrix:
6/10/2023 11:49
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34469 06/16/23 09:00
<0.242 µg/m3 0.242 0.860Propene 1 06/17/23 00:24 V34471ENM
3.78 µg/m3 0.124 2.13
Styrene 1 06/17/23 00:24 V34471ENM
<0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 06/17/23 00:24 V34471ENM
0.861 J µg/m3 0.181 3.39Tetrachloroethene 1 06/17/23 00:24 V34471ENM
13.1 µg/m3 0.107 1.47Tetrahydrofuran 1 06/17/23 00:24 V34471ENM
8.80 µg/m3 0.090 1.88Toluene 1 06/17/23 00:24 V34471ENM
<0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 06/17/23 00:24 V34471ENM
<0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 06/17/23 00:24 V34471ENM
<0.087 µg/m3 0.087 2.73
1,1,2-Trichloroethane 1 06/17/23 00:24 V34471ENM
<0.199 µg/m3 0.199 2.15Trichloroethene 1 06/17/23 00:24 V34471ENM
1.61 J µg/m3 0.130 2.81Trichlorofluoromethane 1 06/17/23 00:24 V34471ENM
5.01 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 06/17/23 00:24 V34471ENM
0.983 J µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 06/17/23 00:24 V34471ENM
<0.224 µg/m3 0.224 1.76Vinyl Acetate 1 06/17/23 00:24 V34471ENM
<0.127 µg/m3 0.127 1.28Vinyl Chloride 1 06/17/23 00:24 V34471ENM
2.99 µg/m3 0.157 2.17o-Xylene 1 06/17/23 00:24 V34471ENM
9.39 µg/m3 0.217 5.65m,p-Xylene 1 06/17/23 00:24 V34471ENM
12.4 µg/m3 0.157 2.17Xylene (Total)1 06/17/23 00:24 V34471
Surrogate: 4-Bromofluorobenzene 98.6 Limits: 70-130%06/17/23 00:241 ENM V34471
Qualifiers/
Definitions
Dilution FactorDFAnalyte detected in blankB
Method Quantitation LimitMQLEstimated valueJ
Page 48 of 68
Quality Control Data
23-165-0001Report No:
Project Description:
Client ID:Mid-Atlantic Associates, Inc. - Raleigh
North Hills Expansion
QC Prep Batch Method:
Volatile Organic Compounds in Air- GC/MS
TO-15
V34391QC Analytical Batch(es):
Analysis Method:
Analysis Description:
TO-15 Prep
QC Prep:V34387
Associated Lab Samples: 98267, 98268, 98269, 98270, 98271, 98272, 98273, 98274
LRB-V34387 Matrix: AIRLab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
06/14/23 14:184.750.2020.634µg/m3Acetone
06/14/23 14:181.600.073<0.073µg/m3Benzene
06/14/23 14:1810.40.147<0.147µg/m3Benzyl Chloride
06/14/23 14:183.350.150<0.150µg/m3Bromodichloromethane
06/14/23 14:185.170.153<0.153µg/m3Bromoform
06/14/23 14:181.940.115<0.115µg/m3Bromomethane
06/14/23 14:181.110.328<0.328µg/m31,3-Butadiene
06/14/23 14:186.230.0600.270µg/m3Carbon Disulfide
06/14/23 14:183.150.155<0.155µg/m3Carbon Tetrachloride
06/14/23 14:182.300.107<0.107µg/m3Chlorobenzene
06/14/23 14:184.260.208<0.208µg/m3Chlorodibromomethane
06/14/23 14:181.320.164<0.164µg/m3Chloroethane
06/14/23 14:182.440.086<0.086µg/m3Chloroform
06/14/23 14:181.030.067<0.067µg/m3Chloromethane
06/14/23 14:183.440.161<0.161µg/m3Cyclohexane
06/14/23 14:183.840.151<0.151µg/m31,2-Dibromoethane
06/14/23 14:183.010.096<0.096µg/m31,2-Dichlorobenzene
06/14/23 14:1812.00.174<0.174µg/m31,3-Dichlorobenzene
06/14/23 14:183.010.186<0.186µg/m31,4-Dichlorobenzene
06/14/23 14:182.470.134<0.134µg/m3Dichlorodifluoromethane
06/14/23 14:182.020.101<0.101µg/m31,1-Dichloroethane
06/14/23 14:182.020.129<0.129µg/m31,2-Dichloroethane
06/14/23 14:181.980.107<0.107µg/m31,1-Dichloroethene
06/14/23 14:181.980.095<0.095µg/m3cis-1,2-Dichloroethene
06/14/23 14:181.980.108<0.108µg/m3trans-1,2-Dichloroethene
06/14/23 14:182.310.205<0.205µg/m31,2-Dichloropropane
06/14/23 14:183.500.622<0.622µg/m31,2-Dichlorotetrafluoroethane
Page 1 of 15Date:06/19/2023 12:40 PM
Page 49 of 68
Quality Control Data
23-165-0001Report No:
Project Description:
Client ID:Mid-Atlantic Associates, Inc. - Raleigh
North Hills Expansion
QC Prep Batch Method:
Volatile Organic Compounds in Air- GC/MS
TO-15
V34391QC Analytical Batch(es):
Analysis Method:
Analysis Description:
TO-15 Prep
QC Prep:V34387
Associated Lab Samples: 98267, 98268, 98269, 98270, 98271, 98272, 98273, 98274
LRB-V34387 Matrix: AIRLab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
06/14/23 14:182.270.178<0.178µg/m3cis-1,3-Dichloropropene
06/14/23 14:182.270.178<0.178µg/m3trans-1,3-Dichloropropene
06/14/23 14:181.800.435<0.435µg/m31,4-Dioxane
06/14/23 14:181.800.136<0.136µg/m3Ethyl Acetate
06/14/23 14:182.170.106<0.106µg/m3Ethylbenzene
06/14/23 14:182.460.128<0.128µg/m34-Ethyltoluene
06/14/23 14:183.830.561<0.561µg/m31,1,2-Trichloro-1,2,2-trifluoroethane
06/14/23 14:182.050.143<0.143µg/m3Heptane
06/14/23 14:185.330.330<0.330µg/m3Hexachlorobutadiene
06/14/23 14:181.760.047<0.047µg/m3n-Hexane
06/14/23 14:182.050.285<0.285µg/m32-Hexanone
06/14/23 14:184.920.1390.867µg/m3Isopropyl Alcohol
06/14/23 14:181.470.224<0.224µg/m3Methyl Ethyl Ketone (MEK)
06/14/23 14:181.800.033<0.033µg/m3Methyl tert-butyl ether (MTBE)
06/14/23 14:182.050.121<0.121µg/m34-Methyl-2-Pentanone
06/14/23 14:181.740.488<0.488µg/m3Methylene Chloride
06/14/23 14:182.620.183<0.183µg/m3Naphthalene
06/14/23 14:180.8600.242<0.242µg/m3Propene
06/14/23 14:182.130.124<0.124µg/m3Styrene
06/14/23 14:183.430.104<0.104µg/m31,1,2,2-Tetrachloroethane
06/14/23 14:183.390.181<0.181µg/m3Tetrachloroethene
06/14/23 14:181.470.107<0.107µg/m3Tetrahydrofuran
06/14/23 14:181.880.0900.301µg/m3Toluene
06/14/23 14:183.710.209<0.209µg/m31,2,4-Trichlorobenzene
06/14/23 14:182.730.144<0.144µg/m31,1,1-Trichloroethane
06/14/23 14:182.730.087<0.087µg/m31,1,2-Trichloroethane
06/14/23 14:182.150.199<0.199µg/m3Trichloroethene
Page 2 of 15Date:06/19/2023 12:40 PM
Page 50 of 68
Quality Control Data
23-165-0001Report No:
Project Description:
Client ID:Mid-Atlantic Associates, Inc. - Raleigh
North Hills Expansion
QC Prep Batch Method:
Volatile Organic Compounds in Air- GC/MS
TO-15
V34391QC Analytical Batch(es):
Analysis Method:
Analysis Description:
TO-15 Prep
QC Prep:V34387
Associated Lab Samples: 98267, 98268, 98269, 98270, 98271, 98272, 98273, 98274
LRB-V34387 Matrix: AIRLab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
06/14/23 14:182.810.130<0.130µg/m3Trichlorofluoromethane
06/14/23 14:182.460.110<0.110µg/m31,2,4-Trimethylbenzene
06/14/23 14:182.460.236<0.236µg/m31,3,5-Trimethylbenzene
06/14/23 14:181.760.224<0.224µg/m3Vinyl Acetate
06/14/23 14:181.280.127<0.127µg/m3Vinyl Chloride
06/14/23 14:182.170.157<0.157µg/m3o-Xylene
06/14/23 14:185.650.217<0.217µg/m3m,p-Xylene
06/14/23 14:184-Bromofluorobenzene (S)95.5 70-130
LCS-V34387Laboratory Control Sample
Parameter
LCS %RecLCS
Result
Spike
Conc.Units
% Rec
Limits
10212.111.9µg/m3Acetone 70-130
93.715.016.0µg/m3Benzene 70-130
98.425.525.9µg/m3Benzyl Chloride 70-130
94.631.733.5µg/m3Bromodichloromethane 70-130
93.248.251.7µg/m3Bromoform 70-130
10420.219.4µg/m3Bromomethane 70-130
10511.611.1µg/m31,3-Butadiene 70-130
10316.115.6µg/m3Carbon Disulfide 70-130
94.629.831.5µg/m3Carbon Tetrachloride 70-130
10123.223.0µg/m3Chlorobenzene 70-130
98.542.042.6µg/m3Chlorodibromomethane 70-130
10213.413.2µg/m3Chloroethane 70-130
98.724.124.4µg/m3Chloroform 70-130
10410.710.3µg/m3Chloromethane 70-130
97.616.817.2µg/m3Cyclohexane 70-130
Page 3 of 15Date:06/19/2023 12:40 PM
Page 51 of 68
Quality Control Data
23-165-0001Report No:
Project Description:
Client ID:Mid-Atlantic Associates, Inc. - Raleigh
North Hills Expansion
QC Prep Batch Method:
Volatile Organic Compounds in Air- GC/MS
TO-15
V34391QC Analytical Batch(es):
Analysis Method:
Analysis Description:
TO-15 Prep
QC Prep:V34387
LCS-V34387Laboratory Control Sample
Parameter
LCS %RecLCS
Result
Spike
Conc.Units
% Rec
Limits
10138.638.4µg/m31,2-Dibromoethane 70-130
10732.230.1µg/m31,2-Dichlorobenzene 70-130
10632.030.1µg/m31,3-Dichlorobenzene 70-130
10932.930.1µg/m31,4-Dichlorobenzene 70-130
10525.924.7µg/m3Dichlorodifluoromethane 70-130
10320.920.2µg/m31,1-Dichloroethane 70-130
98.019.820.2µg/m31,2-Dichloroethane 70-130
10620.919.8µg/m31,1-Dichloroethene 70-130
10320.419.8µg/m3cis-1,2-Dichloroethene 70-130
10721.119.8µg/m3trans-1,2-Dichloroethene 70-130
94.821.923.1µg/m31,2-Dichloropropane 70-130
10536.935.0µg/m31,2-Dichlorotetrafluoroethane 70-130
95.521.722.7µg/m3cis-1,3-Dichloropropene 70-130
95.521.722.7µg/m3trans-1,3-Dichloropropene 70-130
96.117.318.0µg/m31,4-Dioxane 70-130
10218.418.0µg/m3Ethyl Acetate 70-130
99.521.621.7µg/m3Ethylbenzene 70-130
10024.624.6µg/m34-Ethyltoluene 70-130
10440.038.3µg/m31,1,2-Trichloro-1,2,2-trifluoroethane 70-130
96.519.820.5µg/m3Heptane 70-130
96.851.653.3µg/m3Hexachlorobutadiene 70-130
10318.217.6µg/m3n-Hexane 70-130
10120.820.5µg/m32-Hexanone 70-130
10613.012.3µg/m3Isopropyl Alcohol 70-130
10014.814.8µg/m3Methyl Ethyl Ketone (MEK)70-130
10318.518.0µg/m3Methyl tert-butyl ether (MTBE)70-130
95.119.520.5µg/m34-Methyl-2-Pentanone 70-130
Page 4 of 15Date:06/19/2023 12:40 PM
Page 52 of 68
Quality Control Data
23-165-0001Report No:
Project Description:
Client ID:Mid-Atlantic Associates, Inc. - Raleigh
North Hills Expansion
QC Prep Batch Method:
Volatile Organic Compounds in Air- GC/MS
TO-15
V34391QC Analytical Batch(es):
Analysis Method:
Analysis Description:
TO-15 Prep
QC Prep:V34387
LCS-V34387Laboratory Control Sample
Parameter
LCS %RecLCS
Result
Spike
Conc.Units
% Rec
Limits
97.116.917.4µg/m3Methylene Chloride 70-130
95.024.926.2µg/m3Naphthalene 70-130
99.08.538.61µg/m3Propene 70-130
91.019.421.3µg/m3Styrene 70-130
95.332.734.3µg/m31,1,2,2-Tetrachloroethane 70-130
94.131.933.9µg/m3Tetrachloroethene 70-130
99.314.614.7µg/m3Tetrahydrofuran 70-130
94.117.718.8µg/m3Toluene 70-130
95.935.637.1µg/m31,2,4-Trichlorobenzene 70-130
96.726.427.3µg/m31,1,1-Trichloroethane 70-130
99.627.227.3µg/m31,1,2-Trichloroethane 70-130
96.225.926.9µg/m3Trichloroethene 70-130
10429.328.1µg/m3Trichlorofluoromethane 70-130
98.324.224.6µg/m31,2,4-Trimethylbenzene 70-130
10024.724.6µg/m31,3,5-Trimethylbenzene 70-130
10418.317.6µg/m3Vinyl Acetate 70-130
10513.412.8µg/m3Vinyl Chloride 70-130
97.621.221.7µg/m3o-Xylene 70-130
89.839.043.4µg/m3m,p-Xylene 70-130
1014-Bromofluorobenzene (S)70-130
Page 5 of 15Date:06/19/2023 12:40 PM
Page 53 of 68
Quality Control Data
23-165-0001Report No:
Project Description:
Client ID:Mid-Atlantic Associates, Inc. - Raleigh
North Hills Expansion
QC Prep Batch Method:
Volatile Organic Compounds in Air- GC/MS
TO-15
V34447QC Analytical Batch(es):
Analysis Method:
Analysis Description:
TO-15 Prep
QC Prep:V34413
Associated Lab Samples: 98267, 98269, 98272, 98275
LRB-V34413 Matrix: AIRLab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
06/15/23 12:354.750.202<0.202µg/m3Acetone
06/15/23 12:351.600.073<0.073µg/m3Benzene
06/15/23 12:3510.40.147<0.147µg/m3Benzyl Chloride
06/15/23 12:353.350.150<0.150µg/m3Bromodichloromethane
06/15/23 12:355.170.153<0.153µg/m3Bromoform
06/15/23 12:351.940.115<0.115µg/m3Bromomethane
06/15/23 12:351.110.328<0.328µg/m31,3-Butadiene
06/15/23 12:356.230.060<0.060µg/m3Carbon Disulfide
06/15/23 12:353.150.155<0.155µg/m3Carbon Tetrachloride
06/15/23 12:352.300.107<0.107µg/m3Chlorobenzene
06/15/23 12:354.260.208<0.208µg/m3Chlorodibromomethane
06/15/23 12:351.320.164<0.164µg/m3Chloroethane
06/15/23 12:352.440.086<0.086µg/m3Chloroform
06/15/23 12:351.030.067<0.067µg/m3Chloromethane
06/15/23 12:353.440.161<0.161µg/m3Cyclohexane
06/15/23 12:353.840.151<0.151µg/m31,2-Dibromoethane
06/15/23 12:353.010.096<0.096µg/m31,2-Dichlorobenzene
06/15/23 12:3512.00.174<0.174µg/m31,3-Dichlorobenzene
06/15/23 12:353.010.186<0.186µg/m31,4-Dichlorobenzene
06/15/23 12:352.470.134<0.134µg/m3Dichlorodifluoromethane
06/15/23 12:352.020.101<0.101µg/m31,1-Dichloroethane
06/15/23 12:352.020.129<0.129µg/m31,2-Dichloroethane
06/15/23 12:351.980.107<0.107µg/m31,1-Dichloroethene
06/15/23 12:351.980.095<0.095µg/m3cis-1,2-Dichloroethene
06/15/23 12:351.980.108<0.108µg/m3trans-1,2-Dichloroethene
06/15/23 12:352.310.205<0.205µg/m31,2-Dichloropropane
06/15/23 12:353.500.622<0.622µg/m31,2-Dichlorotetrafluoroethane
Page 6 of 15Date:06/19/2023 12:40 PM
Page 54 of 68
Quality Control Data
23-165-0001Report No:
Project Description:
Client ID:Mid-Atlantic Associates, Inc. - Raleigh
North Hills Expansion
QC Prep Batch Method:
Volatile Organic Compounds in Air- GC/MS
TO-15
V34447QC Analytical Batch(es):
Analysis Method:
Analysis Description:
TO-15 Prep
QC Prep:V34413
Associated Lab Samples: 98267, 98269, 98272, 98275
LRB-V34413 Matrix: AIRLab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
06/15/23 12:352.270.178<0.178µg/m3cis-1,3-Dichloropropene
06/15/23 12:352.270.178<0.178µg/m3trans-1,3-Dichloropropene
06/15/23 12:351.800.435<0.435µg/m31,4-Dioxane
06/15/23 12:351.800.136<0.136µg/m3Ethyl Acetate
06/15/23 12:352.170.106<0.106µg/m3Ethylbenzene
06/15/23 12:352.460.128<0.128µg/m34-Ethyltoluene
06/15/23 12:353.830.561<0.561µg/m31,1,2-Trichloro-1,2,2-trifluoroethane
06/15/23 12:352.050.143<0.143µg/m3Heptane
06/15/23 12:355.330.330<0.330µg/m3Hexachlorobutadiene
06/15/23 12:351.760.047<0.047µg/m3n-Hexane
06/15/23 12:352.050.285<0.285µg/m32-Hexanone
06/15/23 12:354.920.1390.653µg/m3Isopropyl Alcohol
06/15/23 12:351.470.224<0.224µg/m3Methyl Ethyl Ketone (MEK)
06/15/23 12:351.800.033<0.033µg/m3Methyl tert-butyl ether (MTBE)
06/15/23 12:352.050.121<0.121µg/m34-Methyl-2-Pentanone
06/15/23 12:351.740.488<0.488µg/m3Methylene Chloride
06/15/23 12:352.620.183<0.183µg/m3Naphthalene
06/15/23 12:350.8600.242<0.242µg/m3Propene
06/15/23 12:352.130.124<0.124µg/m3Styrene
06/15/23 12:353.430.104<0.104µg/m31,1,2,2-Tetrachloroethane
06/15/23 12:353.390.181<0.181µg/m3Tetrachloroethene
06/15/23 12:351.470.107<0.107µg/m3Tetrahydrofuran
06/15/23 12:351.880.0900.440µg/m3Toluene
06/15/23 12:353.710.209<0.209µg/m31,2,4-Trichlorobenzene
06/15/23 12:352.730.144<0.144µg/m31,1,1-Trichloroethane
06/15/23 12:352.730.087<0.087µg/m31,1,2-Trichloroethane
06/15/23 12:352.150.199<0.199µg/m3Trichloroethene
Page 7 of 15Date:06/19/2023 12:40 PM
Page 55 of 68
Quality Control Data
23-165-0001Report No:
Project Description:
Client ID:Mid-Atlantic Associates, Inc. - Raleigh
North Hills Expansion
QC Prep Batch Method:
Volatile Organic Compounds in Air- GC/MS
TO-15
V34447QC Analytical Batch(es):
Analysis Method:
Analysis Description:
TO-15 Prep
QC Prep:V34413
Associated Lab Samples: 98267, 98269, 98272, 98275
LRB-V34413 Matrix: AIRLab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
06/15/23 12:352.810.130<0.130µg/m3Trichlorofluoromethane
06/15/23 12:352.460.110<0.110µg/m31,2,4-Trimethylbenzene
06/15/23 12:352.460.236<0.236µg/m31,3,5-Trimethylbenzene
06/15/23 12:351.760.224<0.224µg/m3Vinyl Acetate
06/15/23 12:351.280.127<0.127µg/m3Vinyl Chloride
06/15/23 12:352.170.157<0.157µg/m3o-Xylene
06/15/23 12:355.650.217<0.217µg/m3m,p-Xylene
06/15/23 12:354-Bromofluorobenzene (S)98.0 70-130
LCS-V34413Laboratory Control Sample
Parameter
LCS %RecLCS
Result
Spike
Conc.Units
% Rec
Limits
10312.311.9µg/m3Acetone 70-130
97.515.616.0µg/m3Benzene 70-130
97.225.225.9µg/m3Benzyl Chloride 70-130
96.432.333.5µg/m3Bromodichloromethane 70-130
92.848.051.7µg/m3Bromoform 70-130
10620.519.4µg/m3Bromomethane 70-130
10311.411.1µg/m31,3-Butadiene 70-130
10516.415.6µg/m3Carbon Disulfide 70-130
98.431.031.5µg/m3Carbon Tetrachloride 70-130
10123.223.0µg/m3Chlorobenzene 70-130
96.941.342.6µg/m3Chlorodibromomethane 70-130
10213.513.2µg/m3Chloroethane 70-130
10024.424.4µg/m3Chloroform 70-130
10610.910.3µg/m3Chloromethane 70-130
10017.217.2µg/m3Cyclohexane 70-130
Page 8 of 15Date:06/19/2023 12:40 PM
Page 56 of 68
Quality Control Data
23-165-0001Report No:
Project Description:
Client ID:Mid-Atlantic Associates, Inc. - Raleigh
North Hills Expansion
QC Prep Batch Method:
Volatile Organic Compounds in Air- GC/MS
TO-15
V34447QC Analytical Batch(es):
Analysis Method:
Analysis Description:
TO-15 Prep
QC Prep:V34413
LCS-V34413Laboratory Control Sample
Parameter
LCS %RecLCS
Result
Spike
Conc.Units
% Rec
Limits
99.738.338.4µg/m31,2-Dibromoethane 70-130
10632.030.1µg/m31,2-Dichlorobenzene 70-130
10331.130.1µg/m31,3-Dichlorobenzene 70-130
10732.130.1µg/m31,4-Dichlorobenzene 70-130
10626.124.7µg/m3Dichlorodifluoromethane 70-130
10521.220.2µg/m31,1-Dichloroethane 70-130
98.519.920.2µg/m31,2-Dichloroethane 70-130
10821.419.8µg/m31,1-Dichloroethene 70-130
10620.919.8µg/m3cis-1,2-Dichloroethene 70-130
10721.119.8µg/m3trans-1,2-Dichloroethene 70-130
97.822.623.1µg/m31,2-Dichloropropane 70-130
10536.835.0µg/m31,2-Dichlorotetrafluoroethane 70-130
98.222.322.7µg/m3cis-1,3-Dichloropropene 70-130
98.222.322.7µg/m3trans-1,3-Dichloropropene 70-130
10018.018.0µg/m31,4-Dioxane 70-130
10218.318.0µg/m3Ethyl Acetate 70-130
99.021.521.7µg/m3Ethylbenzene 70-130
99.524.524.6µg/m34-Ethyltoluene 70-130
10540.438.3µg/m31,1,2-Trichloro-1,2,2-trifluoroethane 70-130
99.520.420.5µg/m3Heptane 70-130
96.251.353.3µg/m3Hexachlorobutadiene 70-130
10518.517.6µg/m3n-Hexane 70-130
10020.620.5µg/m32-Hexanone 70-130
10412.812.3µg/m3Isopropyl Alcohol 70-130
10115.014.8µg/m3Methyl Ethyl Ketone (MEK)70-130
10318.518.0µg/m3Methyl tert-butyl ether (MTBE)70-130
97.520.020.5µg/m34-Methyl-2-Pentanone 70-130
Page 9 of 15Date:06/19/2023 12:40 PM
Page 57 of 68
Quality Control Data
23-165-0001Report No:
Project Description:
Client ID:Mid-Atlantic Associates, Inc. - Raleigh
North Hills Expansion
QC Prep Batch Method:
Volatile Organic Compounds in Air- GC/MS
TO-15
V34447QC Analytical Batch(es):
Analysis Method:
Analysis Description:
TO-15 Prep
QC Prep:V34413
LCS-V34413Laboratory Control Sample
Parameter
LCS %RecLCS
Result
Spike
Conc.Units
% Rec
Limits
98.217.117.4µg/m3Methylene Chloride 70-130
96.925.426.2µg/m3Naphthalene 70-130
97.28.378.61µg/m3Propene 70-130
90.619.321.3µg/m3Styrene 70-130
95.632.834.3µg/m31,1,2,2-Tetrachloroethane 70-130
97.933.233.9µg/m3Tetrachloroethene 70-130
10014.714.7µg/m3Tetrahydrofuran 70-130
96.818.218.8µg/m3Toluene 70-130
97.036.037.1µg/m31,2,4-Trichlorobenzene 70-130
98.526.927.3µg/m31,1,1-Trichloroethane 70-130
98.126.827.3µg/m31,1,2-Trichloroethane 70-130
99.226.726.9µg/m3Trichloroethene 70-130
10730.028.1µg/m3Trichlorofluoromethane 70-130
96.723.824.6µg/m31,2,4-Trimethylbenzene 70-130
10124.924.6µg/m31,3,5-Trimethylbenzene 70-130
10418.317.6µg/m3Vinyl Acetate 70-130
10713.712.8µg/m3Vinyl Chloride 70-130
98.121.321.7µg/m3o-Xylene 70-130
89.138.743.4µg/m3m,p-Xylene 70-130
98.04-Bromofluorobenzene (S)70-130
Page 10 of 15Date:06/19/2023 12:40 PM
Page 58 of 68
Quality Control Data
23-165-0001Report No:
Project Description:
Client ID:Mid-Atlantic Associates, Inc. - Raleigh
North Hills Expansion
QC Prep Batch Method:
Volatile Organic Compounds in Air- GC/MS
TO-15
V34471QC Analytical Batch(es):
Analysis Method:
Analysis Description:
TO-15 Prep
QC Prep:V34469
Associated Lab Samples: 98276, 98277, 98278
LRB-V34469 Matrix: AIRLab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
06/16/23 11:274.750.202<0.202µg/m3Acetone
06/16/23 11:271.600.073<0.073µg/m3Benzene
06/16/23 11:2710.40.147<0.147µg/m3Benzyl Chloride
06/16/23 11:273.350.150<0.150µg/m3Bromodichloromethane
06/16/23 11:275.170.153<0.153µg/m3Bromoform
06/16/23 11:271.940.115<0.115µg/m3Bromomethane
06/16/23 11:271.110.328<0.328µg/m31,3-Butadiene
06/16/23 11:276.230.060<0.060µg/m3Carbon Disulfide
06/16/23 11:273.150.155<0.155µg/m3Carbon Tetrachloride
06/16/23 11:272.300.107<0.107µg/m3Chlorobenzene
06/16/23 11:274.260.208<0.208µg/m3Chlorodibromomethane
06/16/23 11:271.320.164<0.164µg/m3Chloroethane
06/16/23 11:272.440.086<0.086µg/m3Chloroform
06/16/23 11:271.030.067<0.067µg/m3Chloromethane
06/16/23 11:273.440.161<0.161µg/m3Cyclohexane
06/16/23 11:273.840.151<0.151µg/m31,2-Dibromoethane
06/16/23 11:273.010.096<0.096µg/m31,2-Dichlorobenzene
06/16/23 11:2712.00.174<0.174µg/m31,3-Dichlorobenzene
06/16/23 11:273.010.186<0.186µg/m31,4-Dichlorobenzene
06/16/23 11:272.470.134<0.134µg/m3Dichlorodifluoromethane
06/16/23 11:272.020.101<0.101µg/m31,1-Dichloroethane
06/16/23 11:272.020.129<0.129µg/m31,2-Dichloroethane
06/16/23 11:271.980.107<0.107µg/m31,1-Dichloroethene
06/16/23 11:271.980.095<0.095µg/m3cis-1,2-Dichloroethene
06/16/23 11:271.980.108<0.108µg/m3trans-1,2-Dichloroethene
06/16/23 11:272.310.205<0.205µg/m31,2-Dichloropropane
06/16/23 11:273.500.622<0.622µg/m31,2-Dichlorotetrafluoroethane
Page 11 of 15Date:06/19/2023 12:40 PM
Page 59 of 68
Quality Control Data
23-165-0001Report No:
Project Description:
Client ID:Mid-Atlantic Associates, Inc. - Raleigh
North Hills Expansion
QC Prep Batch Method:
Volatile Organic Compounds in Air- GC/MS
TO-15
V34471QC Analytical Batch(es):
Analysis Method:
Analysis Description:
TO-15 Prep
QC Prep:V34469
Associated Lab Samples: 98276, 98277, 98278
LRB-V34469 Matrix: AIRLab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
06/16/23 11:272.270.178<0.178µg/m3cis-1,3-Dichloropropene
06/16/23 11:272.270.178<0.178µg/m3trans-1,3-Dichloropropene
06/16/23 11:271.800.435<0.435µg/m31,4-Dioxane
06/16/23 11:271.800.136<0.136µg/m3Ethyl Acetate
06/16/23 11:272.170.106<0.106µg/m3Ethylbenzene
06/16/23 11:272.460.128<0.128µg/m34-Ethyltoluene
06/16/23 11:273.830.561<0.561µg/m31,1,2-Trichloro-1,2,2-trifluoroethane
06/16/23 11:272.050.143<0.143µg/m3Heptane
06/16/23 11:275.330.330<0.330µg/m3Hexachlorobutadiene
06/16/23 11:271.760.047<0.047µg/m3n-Hexane
06/16/23 11:272.050.285<0.285µg/m32-Hexanone
06/16/23 11:274.920.1390.368µg/m3Isopropyl Alcohol
06/16/23 11:271.470.224<0.224µg/m3Methyl Ethyl Ketone (MEK)
06/16/23 11:271.800.033<0.033µg/m3Methyl tert-butyl ether (MTBE)
06/16/23 11:272.050.121<0.121µg/m34-Methyl-2-Pentanone
06/16/23 11:271.740.488<0.488µg/m3Methylene Chloride
06/16/23 11:272.620.183<0.183µg/m3Naphthalene
06/16/23 11:270.8600.242<0.242µg/m3Propene
06/16/23 11:272.130.124<0.124µg/m3Styrene
06/16/23 11:273.430.104<0.104µg/m31,1,2,2-Tetrachloroethane
06/16/23 11:273.390.181<0.181µg/m3Tetrachloroethene
06/16/23 11:271.470.107<0.107µg/m3Tetrahydrofuran
06/16/23 11:271.880.090<0.090µg/m3Toluene
06/16/23 11:273.710.209<0.209µg/m31,2,4-Trichlorobenzene
06/16/23 11:272.730.144<0.144µg/m31,1,1-Trichloroethane
06/16/23 11:272.730.087<0.087µg/m31,1,2-Trichloroethane
06/16/23 11:272.150.199<0.199µg/m3Trichloroethene
Page 12 of 15Date:06/19/2023 12:40 PM
Page 60 of 68
Quality Control Data
23-165-0001Report No:
Project Description:
Client ID:Mid-Atlantic Associates, Inc. - Raleigh
North Hills Expansion
QC Prep Batch Method:
Volatile Organic Compounds in Air- GC/MS
TO-15
V34471QC Analytical Batch(es):
Analysis Method:
Analysis Description:
TO-15 Prep
QC Prep:V34469
Associated Lab Samples: 98276, 98277, 98278
LRB-V34469 Matrix: AIRLab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
06/16/23 11:272.810.130<0.130µg/m3Trichlorofluoromethane
06/16/23 11:272.460.110<0.110µg/m31,2,4-Trimethylbenzene
06/16/23 11:272.460.236<0.236µg/m31,3,5-Trimethylbenzene
06/16/23 11:271.760.224<0.224µg/m3Vinyl Acetate
06/16/23 11:271.280.127<0.127µg/m3Vinyl Chloride
06/16/23 11:272.170.157<0.157µg/m3o-Xylene
06/16/23 11:275.650.217<0.217µg/m3m,p-Xylene
06/16/23 11:274-Bromofluorobenzene (S)94.1 70-130
LCS-V34469Laboratory Control Sample
Parameter
LCS %RecLCS
Result
Spike
Conc.Units
% Rec
Limits
10612.611.9µg/m3Acetone 70-130
10016.016.0µg/m3Benzene 70-130
10026.025.9µg/m3Benzyl Chloride 70-130
10134.033.5µg/m3Bromodichloromethane 70-130
10353.051.7µg/m3Bromoform 70-130
11221.819.4µg/m3Bromomethane 70-130
10511.711.1µg/m31,3-Butadiene 70-130
11017.215.6µg/m3Carbon Disulfide 70-130
10131.931.5µg/m3Carbon Tetrachloride 70-130
10524.223.0µg/m3Chlorobenzene 70-130
10444.142.6µg/m3Chlorodibromomethane 70-130
10714.113.2µg/m3Chloroethane 70-130
10525.524.4µg/m3Chloroform 70-130
10911.210.3µg/m3Chloromethane 70-130
10117.317.2µg/m3Cyclohexane 70-130
Page 13 of 15Date:06/19/2023 12:40 PM
Page 61 of 68
Quality Control Data
23-165-0001Report No:
Project Description:
Client ID:Mid-Atlantic Associates, Inc. - Raleigh
North Hills Expansion
QC Prep Batch Method:
Volatile Organic Compounds in Air- GC/MS
TO-15
V34471QC Analytical Batch(es):
Analysis Method:
Analysis Description:
TO-15 Prep
QC Prep:V34469
LCS-V34469Laboratory Control Sample
Parameter
LCS %RecLCS
Result
Spike
Conc.Units
% Rec
Limits
10640.738.4µg/m31,2-Dibromoethane 70-130
11334.030.1µg/m31,2-Dichlorobenzene 70-130
11133.530.1µg/m31,3-Dichlorobenzene 70-130
11334.030.1µg/m31,4-Dichlorobenzene 70-130
11127.424.7µg/m3Dichlorodifluoromethane 70-130
10922.120.2µg/m31,1-Dichloroethane 70-130
10220.720.2µg/m31,2-Dichloroethane 70-130
11021.719.8µg/m31,1-Dichloroethene 70-130
10821.319.8µg/m3cis-1,2-Dichloroethene 70-130
10921.519.8µg/m3trans-1,2-Dichloroethene 70-130
99.523.023.1µg/m31,2-Dichloropropane 70-130
11138.835.0µg/m31,2-Dichlorotetrafluoroethane 70-130
99.522.622.7µg/m3cis-1,3-Dichloropropene 70-130
99.522.622.7µg/m3trans-1,3-Dichloropropene 70-130
10318.618.0µg/m31,4-Dioxane 70-130
10218.318.0µg/m3Ethyl Acetate 70-130
10422.521.7µg/m3Ethylbenzene 70-130
10425.624.6µg/m34-Ethyltoluene 70-130
11142.438.3µg/m31,1,2-Trichloro-1,2,2-trifluoroethane 70-130
97.520.020.5µg/m3Heptane 70-130
10555.753.3µg/m3Hexachlorobutadiene 70-130
10718.917.6µg/m3n-Hexane 70-130
10221.020.5µg/m32-Hexanone 70-130
10212.612.3µg/m3Isopropyl Alcohol 70-130
10115.014.8µg/m3Methyl Ethyl Ketone (MEK)70-130
10619.018.0µg/m3Methyl tert-butyl ether (MTBE)70-130
97.520.020.5µg/m34-Methyl-2-Pentanone 70-130
Page 14 of 15Date:06/19/2023 12:40 PM
Page 62 of 68
Quality Control Data
23-165-0001Report No:
Project Description:
Client ID:Mid-Atlantic Associates, Inc. - Raleigh
North Hills Expansion
QC Prep Batch Method:
Volatile Organic Compounds in Air- GC/MS
TO-15
V34471QC Analytical Batch(es):
Analysis Method:
Analysis Description:
TO-15 Prep
QC Prep:V34469
LCS-V34469Laboratory Control Sample
Parameter
LCS %RecLCS
Result
Spike
Conc.Units
% Rec
Limits
10217.817.4µg/m3Methylene Chloride 70-130
10327.026.2µg/m3Naphthalene 70-130
99.58.578.61µg/m3Propene 70-130
95.320.321.3µg/m3Styrene 70-130
10235.134.3µg/m31,1,2,2-Tetrachloroethane 70-130
10034.033.9µg/m3Tetrachloroethene 70-130
97.914.414.7µg/m3Tetrahydrofuran 70-130
98.418.518.8µg/m3Toluene 70-130
10237.737.1µg/m31,2,4-Trichlorobenzene 70-130
10127.727.3µg/m31,1,1-Trichloroethane 70-130
10729.127.3µg/m31,1,2-Trichloroethane 70-130
10327.626.9µg/m3Trichloroethene 70-130
11231.428.1µg/m3Trichlorofluoromethane 70-130
10024.624.6µg/m31,2,4-Trimethylbenzene 70-130
10726.324.6µg/m31,3,5-Trimethylbenzene 70-130
10919.217.6µg/m3Vinyl Acetate 70-130
11114.212.8µg/m3Vinyl Chloride 70-130
10322.321.7µg/m3o-Xylene 70-130
93.040.443.4µg/m3m,p-Xylene 70-130
99.44-Bromofluorobenzene (S)70-130
Page 15 of 15Date:06/19/2023 12:40 PM
Page 63 of 68
Fed Ex
UPS
US Postal
Client
Lab
Courier
Other :
Shipment Receipt Form
Customer Number:
Customer Name:
Report Number:23-165-0001
Mid-Atlantic Associates, Inc. - Raleigh
01139
Shipping Method
Shipping container/cooler uncompromised?
Thermometer ID:N/A
Chain of Custody (COC) present?Yes No
Yes No Not Present
Yes No Not Present
Yes No
COC agrees with sample label(s)?Yes No
COC properly completed
Samples in proper containers?
Sample containers intact?
Sufficient sample volume for indicated test(s)?
All samples received within holding time?
Cooler temperature in compliance?
Yes No
Yes No
Yes No
Yes No
Yes No
Yes NoCooler/Samples arrived at the laboratory on ice.
Samples were considered acceptable as cooling
process had begun.
Yes No
Yes No N/A
Yes No N/A
Yes No N/ASoil VOA method 5035 – compliance criteria met
Water - Sample containers properly preserved
Water - VOA vials free of headspace Yes No N/A
Trip Blanks received with VOAs
Low concentration EnCore samplers (48 hr)
High concentration pre-weighed (methanol -14 d) Low conc pre-weighed vials (Sod Bis -14 d)
High concentration container (48 hr)
Custody seals intact on shipping container/cooler?
Custody seals intact on sample bottles?
Number of coolers/boxes received
Yes No
1
Signature:Angelo Norvell Date & Time:06/14/2023 08:47:32
Special precautions or instructions included?
Comments:
Page 64 of 68
Page 65 of 68
Page 66 of 68
Page 67 of 68
Page 68 of 68

APPENDIX E

LABORATORY ANALYTICAL REPORTS AND
CHAIN-OF-CUSTODY RECORDS FOR SUB-SLAB SOIL GAS SAMPLES

Laboratory's liability in any claim relating to analyses performed shall be limited to, at laboratory's option, repeating the
analysis in question at laboratory's expense, or the refund of the charges paid for performance of said analysis.

6/27/2023
Mid-Atlantic Associates, Inc. - Raleigh Nolen Barefoot
409 Rogers View Court Raleigh, NC, 27610
Ref: Analytical Testing
Lab Report Number: 23-167-0022 Client Project Description: North Hills
Dear Nolen Barefoot:
Waypoint Analytical, LLC (Charlotte) received sample(s) on 6/16/2023 for the analyses presented in the
following report.
The above referenced project has been analyzed per your instructions. The analyses were performed in accordance with the applicable analytical method.
The analytical data has been validated using standard quality control measures performed as required by the
analytical method. Quality Assurance, method validations, instrumentation maintenance and calibration for all parameters were performed in accordance with guidelines established by the USEPA (including 40 CFR 136
Method Update Rule May 2021) unless otherwise indicated. Certain parameters (chlorine, pH, dissolved oxygen, sulfite...) are required to be analyzed within 15 minutes of sampling. Usually, but not always, any field parameter analyzed at the laboratory is outside of this holding time. Refer to sample analysis time for confirmation of holding time compliance.
The results are shown on the attached Report of Analysis(s). Results for solid matrices are reported on an as-received basis unless otherwise indicated. This report shall not be reproduced except in full and relates only to
the samples included in this report. Please do not hesitate to contact me or client services if you have any questions or need additional information. Sincerely,
Angela D Overcash Senior Project Manager
Page 1 of 62
Certification Summary
Laboratory ID: WP CNC: Waypoint Analytical Carolina, Inc. (C), Charlotte, NC
State Program Lab ID Expiration Date
07/31/202337735State ProgramNorth Carolina
12/31/2023402State ProgramNorth Carolina
07/31/202399012State ProgramSouth Carolina
12/31/202299012State ProgramSouth Carolina
Page 1 of 1 00016/23-167-0022
Page 2 of 62
Report Number:
Sample Summary Table
Client Project Description:
23-167-0022
North Hills
Lab No Client Sample ID Matrix Date Collected Date Received
06/14/2023 10:08Air 98651 MP-12 06/16/2023 12:30
06/14/2023 08:37Air 98652 MP-15 06/16/2023 12:30
06/14/2023 09:22Air 98653 MP-13 06/16/2023 12:30
06/14/2023 07:42Air 98654 MP-17 06/16/2023 12:30
06/14/2023 07:15Air 98655 MP-18 06/16/2023 12:30
06/14/2023 08:19Air 98656 MP-16 06/16/2023 12:30
06/14/2023 13:29Air 98657 MP-5 06/16/2023 12:30
06/14/2023 12:58Air 98658 MP-9 06/16/2023 12:30
06/14/2023 12:58Air 98659 MP-Duplicate 06/16/2023 12:30
06/14/2023 12:08Air 98660 MP-10 06/16/2023 12:30
06/14/2023 10:59Air 98661 MP-11 06/16/2023 12:30
Page 3 of 62
Summary of Detected Analytes
QualifiersAnalyzedUnitsResult
Report Number:
Client Sample ID
Method Parameters
Lab Sample ID
23-167-0022
Report Limit
Project:North Hills
V 98651MP-12
123 06/20/2023 02:48TO-15 Acetone µg/m3 4.04
J0.645 06/20/2023 20:23TO-15 Benzene µg/m3 0.073
J3.31 06/20/2023 20:23TO-15 Carbon Disulfide µg/m3 0.060
10.7 06/20/2023 20:23TO-15 Chloroform µg/m3 0.086
4.00 06/20/2023 20:23TO-15 Dichlorodifluoromethane µg/m3 0.134
3.01 06/20/2023 20:23TO-15 trans-1,2-Dichloroethene µg/m3 0.108
2.90 06/20/2023 20:23TO-15 Ethyl Acetate µg/m3 0.136
J1.19 06/20/2023 20:23TO-15 Ethylbenzene µg/m3 0.106
J0.643 06/20/2023 20:23TO-15 4-Ethyltoluene µg/m3 0.128
J0.628 06/20/2023 20:23TO-15 1,1,2-Trichloro-1,2,2-trifluoroethane µg/m3 0.561
45.9 06/20/2023 20:23TO-15 Heptane µg/m3 0.143
78.9 06/20/2023 20:23TO-15 Isopropyl Alcohol µg/m3 0.139
2.58 06/20/2023 20:23TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224
J0.790 06/20/2023 20:23TO-15 4-Methyl-2-Pentanone µg/m3 0.121
8.33 06/20/2023 20:23TO-15 Methylene Chloride µg/m3 0.488
5.18 06/20/2023 20:23TO-15 Naphthalene µg/m3 0.183
20.5 06/20/2023 20:23TO-15 Tetrachloroethene µg/m3 0.181
1.82 06/20/2023 20:23TO-15 Tetrahydrofuran µg/m3 0.107
3.62 06/20/2023 20:23TO-15 Toluene µg/m3 0.090
55.8 06/20/2023 20:23TO-15 Trichlorofluoromethane µg/m3 0.130
4.68 06/20/2023 20:23TO-15 1,2,4-Trimethylbenzene µg/m3 0.110
J0.688 06/20/2023 20:23TO-15 1,3,5-Trimethylbenzene µg/m3 0.236
J1.73 06/20/2023 20:23TO-15 o-Xylene µg/m3 0.157
J5.52 06/20/2023 20:23TO-15 m,p-Xylene µg/m3 0.217
J7.25 06/20/2023 20:23TO-15 Xylene (Total)µg/m3 0.157
V 98652MP-15
29.0 06/20/2023 21:16TO-15 Acetone µg/m3 0.202
J0.827 06/20/2023 21:16TO-15 Benzene µg/m3 0.073
J0.610 06/20/2023 21:16TO-15 Carbon Disulfide µg/m3 0.060
3.15 06/20/2023 21:16TO-15 Dichlorodifluoromethane µg/m3 0.134
4.35 06/20/2023 21:16TO-15 trans-1,2-Dichloroethene µg/m3 0.108
2.24 06/20/2023 21:16TO-15 Ethyl Acetate µg/m3 0.136
J1.61 06/20/2023 21:16TO-15 Ethylbenzene µg/m3 0.106
J0.973 06/20/2023 21:16TO-15 4-Ethyltoluene µg/m3 0.128
J1.50 06/20/2023 21:16TO-15 Heptane µg/m3 0.143
J1.09 06/20/2023 21:16TO-15 n-Hexane µg/m3 0.047
Page 4 of 62
Summary of Detected Analytes
QualifiersAnalyzedUnitsResult
Report Number:
Client Sample ID
Method Parameters
Lab Sample ID
23-167-0022
Report Limit
Project:North Hills
V 98652MP-15
J0.929 06/20/2023 21:16TO-15 2-Hexanone µg/m3 0.285
37.7 06/20/2023 21:16TO-15 Isopropyl Alcohol µg/m3 0.139
3.61 06/20/2023 21:16TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224
J0.589 06/20/2023 21:16TO-15 4-Methyl-2-Pentanone µg/m3 0.121
5.86 06/20/2023 21:16TO-15 Methylene Chloride µg/m3 0.488
6.97 06/20/2023 21:16TO-15 Naphthalene µg/m3 0.183
3.55 06/20/2023 21:16TO-15 Styrene µg/m3 0.124
12.8 06/20/2023 21:16TO-15 Tetrachloroethene µg/m3 0.181
3.58 06/20/2023 21:16TO-15 Tetrahydrofuran µg/m3 0.107
7.15 06/20/2023 21:16TO-15 Toluene µg/m3 0.090
3.03 06/20/2023 21:16TO-15 Trichlorofluoromethane µg/m3 0.130
5.77 06/20/2023 21:16TO-15 1,2,4-Trimethylbenzene µg/m3 0.110
J0.860 06/20/2023 21:16TO-15 1,3,5-Trimethylbenzene µg/m3 0.236
2.44 06/20/2023 21:16TO-15 o-Xylene µg/m3 0.157
6.83 06/20/2023 21:16TO-15 m,p-Xylene µg/m3 0.217
9.27 06/20/2023 21:16TO-15 Xylene (Total)µg/m3 0.157
V 98653MP-13
18.4 06/21/2023 16:46TO-15 Acetone µg/m3 0.202
J0.993 06/21/2023 16:46TO-15 Benzene µg/m3 0.073
J2.80 06/21/2023 16:46TO-15 Carbon Disulfide µg/m3 0.060
J0.673 06/21/2023 16:46TO-15 Carbon Tetrachloride µg/m3 0.155
30.7 06/21/2023 16:46TO-15 Chloroform µg/m3 0.086
4.77 06/21/2023 16:46TO-15 Cyclohexane µg/m3 0.161
3.16 06/21/2023 16:46TO-15 Dichlorodifluoromethane µg/m3 0.134
J0.745 06/21/2023 16:46TO-15 trans-1,2-Dichloroethene µg/m3 0.108
2.65 06/21/2023 16:46TO-15 1,2-Dichloropropane µg/m3 0.205
1.92 06/21/2023 16:46TO-15 Ethyl Acetate µg/m3 0.136
J1.24 06/21/2023 16:46TO-15 Ethylbenzene µg/m3 0.106
J0.683 06/21/2023 16:46TO-15 4-Ethyltoluene µg/m3 0.128
J0.636 06/21/2023 16:46TO-15 1,1,2-Trichloro-1,2,2-trifluoroethane µg/m3 0.561
2.56 06/21/2023 16:46TO-15 Heptane µg/m3 0.143
J0.807 06/21/2023 16:46TO-15 n-Hexane µg/m3 0.047
J0.557 06/21/2023 16:46TO-15 2-Hexanone µg/m3 0.285
32.3 06/21/2023 16:46TO-15 Isopropyl Alcohol µg/m3 0.139
2.12 06/21/2023 16:46TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224
J0.524 06/21/2023 16:46TO-15 4-Methyl-2-Pentanone µg/m3 0.121
Page 5 of 62
Summary of Detected Analytes
QualifiersAnalyzedUnitsResult
Report Number:
Client Sample ID
Method Parameters
Lab Sample ID
23-167-0022
Report Limit
Project:North Hills
V 98653MP-13
1.89 06/21/2023 16:46TO-15 Methylene Chloride µg/m3 0.488
5.52 06/21/2023 16:46TO-15 Naphthalene µg/m3 0.183
153 06/21/2023 16:46TO-15 Tetrachloroethene µg/m3 0.181
1.77 06/21/2023 16:46TO-15 Tetrahydrofuran µg/m3 0.107
4.89 06/21/2023 16:46TO-15 Toluene µg/m3 0.090
179 06/21/2023 16:46TO-15 Trichlorofluoromethane µg/m3 0.130
5.01 06/21/2023 16:46TO-15 1,2,4-Trimethylbenzene µg/m3 0.110
J0.761 06/21/2023 16:46TO-15 1,3,5-Trimethylbenzene µg/m3 0.236
J1.77 06/21/2023 16:46TO-15 o-Xylene µg/m3 0.157
5.81 06/21/2023 16:46TO-15 m,p-Xylene µg/m3 0.217
J7.58 06/21/2023 16:46TO-15 Xylene (Total)µg/m3 0.157
V 98654MP-17
12.7 06/21/2023 17:38TO-15 Acetone µg/m3 0.202
J0.501 06/21/2023 17:38TO-15 Benzene µg/m3 0.073
J1.39 06/21/2023 17:38TO-15 Carbon Disulfide µg/m3 0.060
6.41 06/21/2023 17:38TO-15 Chloroform µg/m3 0.086
3.24 06/21/2023 17:38TO-15 Dichlorodifluoromethane µg/m3 0.134
2.33 06/21/2023 17:38TO-15 Ethyl Acetate µg/m3 0.136
J1.58 06/21/2023 17:38TO-15 Ethylbenzene µg/m3 0.106
J0.904 06/21/2023 17:38TO-15 4-Ethyltoluene µg/m3 0.128
J0.620 06/21/2023 17:38TO-15 1,1,2-Trichloro-1,2,2-trifluoroethane µg/m3 0.561
J0.795 06/21/2023 17:38TO-15 Heptane µg/m3 0.143
J0.683 06/21/2023 17:38TO-15 n-Hexane µg/m3 0.047
31.2 06/21/2023 17:38TO-15 Isopropyl Alcohol µg/m3 0.139
1.66 06/21/2023 17:38TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224
J0.745 06/21/2023 17:38TO-15 4-Methyl-2-Pentanone µg/m3 0.121
J1.59 06/21/2023 17:38TO-15 Methylene Chloride µg/m3 0.488
5.75 06/21/2023 17:38TO-15 Naphthalene µg/m3 0.183
3.14 06/21/2023 17:38TO-15 Styrene µg/m3 0.124
252 06/21/2023 17:38TO-15 Tetrachloroethene µg/m3 0.181
1.64 06/21/2023 17:38TO-15 Tetrahydrofuran µg/m3 0.107
4.37 06/21/2023 17:38TO-15 Toluene µg/m3 0.090
160 06/21/2023 17:38TO-15 Trichlorofluoromethane µg/m3 0.130
5.52 06/21/2023 17:38TO-15 1,2,4-Trimethylbenzene µg/m3 0.110
J0.781 06/21/2023 17:38TO-15 1,3,5-Trimethylbenzene µg/m3 0.236
2.27 06/21/2023 17:38TO-15 o-Xylene µg/m3 0.157
Page 6 of 62
Summary of Detected Analytes
QualifiersAnalyzedUnitsResult
Report Number:
Client Sample ID
Method Parameters
Lab Sample ID
23-167-0022
Report Limit
Project:North Hills
V 98654MP-17
6.70 06/21/2023 17:38TO-15 m,p-Xylene µg/m3 0.217
8.97 06/21/2023 17:38TO-15 Xylene (Total)µg/m3 0.157
V 98655MP-18
11.2 06/21/2023 18:32TO-15 Acetone µg/m3 0.202
J0.769 06/21/2023 18:32TO-15 Benzene µg/m3 0.073
J3.50 06/21/2023 18:32TO-15 Carbon Disulfide µg/m3 0.060
22.3 06/21/2023 18:32TO-15 Chloroform µg/m3 0.086
J3.19 06/21/2023 18:32TO-15 Cyclohexane µg/m3 0.161
3.67 06/21/2023 18:32TO-15 Dichlorodifluoromethane µg/m3 0.134
4.38 06/21/2023 18:32TO-15 1,2-Dichloropropane µg/m3 0.205
1.83 06/21/2023 18:32TO-15 Ethyl Acetate µg/m3 0.136
J1.77 06/21/2023 18:32TO-15 Ethylbenzene µg/m3 0.106
J0.934 06/21/2023 18:32TO-15 4-Ethyltoluene µg/m3 0.128
J0.712 06/21/2023 18:32TO-15 1,1,2-Trichloro-1,2,2-trifluoroethane µg/m3 0.561
J0.881 06/21/2023 18:32TO-15 Heptane µg/m3 0.143
J1.48 06/21/2023 18:32TO-15 n-Hexane µg/m3 0.047
27.5 06/21/2023 18:32TO-15 Isopropyl Alcohol µg/m3 0.139
1.70 06/21/2023 18:32TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224
J0.528 06/21/2023 18:32TO-15 4-Methyl-2-Pentanone µg/m3 0.121
J1.63 06/21/2023 18:32TO-15 Methylene Chloride µg/m3 0.488
5.34 06/21/2023 18:32TO-15 Naphthalene µg/m3 0.183
3.18 06/21/2023 18:32TO-15 Styrene µg/m3 0.124
1450 06/20/2023 23:42TO-15 Tetrachloroethene µg/m3 3.62
1.88 06/21/2023 18:32TO-15 Tetrahydrofuran µg/m3 0.107
5.55 06/21/2023 18:32TO-15 Toluene µg/m3 0.090
J1.78 06/21/2023 18:32TO-15 Trichloroethene µg/m3 0.199
420 06/20/2023 23:42TO-15 Trichlorofluoromethane µg/m3 2.60
5.46 06/21/2023 18:32TO-15 1,2,4-Trimethylbenzene µg/m3 0.110
J0.865 06/21/2023 18:32TO-15 1,3,5-Trimethylbenzene µg/m3 0.236
J1.17 06/21/2023 18:32TO-15 Vinyl Acetate µg/m3 0.224
2.39 06/21/2023 18:32TO-15 o-Xylene µg/m3 0.157
7.44 06/21/2023 18:32TO-15 m,p-Xylene µg/m3 0.217
9.83 06/21/2023 18:32TO-15 Xylene (Total)µg/m3 0.157
V 98656MP-16
10.1 06/21/2023 19:26TO-15 Acetone µg/m3 0.202
J0.370 06/21/2023 19:26TO-15 Benzene µg/m3 0.073
Page 7 of 62
Summary of Detected Analytes
QualifiersAnalyzedUnitsResult
Report Number:
Client Sample ID
Method Parameters
Lab Sample ID
23-167-0022
Report Limit
Project:North Hills
V 98656MP-16
J1.36 06/21/2023 19:26TO-15 Carbon Disulfide µg/m3 0.060
8.04 06/21/2023 19:26TO-15 Chloroform µg/m3 0.086
3.19 06/21/2023 19:26TO-15 Dichlorodifluoromethane µg/m3 0.134
3.65 06/21/2023 19:26TO-15 trans-1,2-Dichloroethene µg/m3 0.108
J2.01 06/21/2023 19:26TO-15 1,2-Dichloropropane µg/m3 0.205
2.32 06/21/2023 19:26TO-15 Ethyl Acetate µg/m3 0.136
J1.46 06/21/2023 19:26TO-15 Ethylbenzene µg/m3 0.106
J0.840 06/21/2023 19:26TO-15 4-Ethyltoluene µg/m3 0.128
J0.659 06/21/2023 19:26TO-15 1,1,2-Trichloro-1,2,2-trifluoroethane µg/m3 0.561
J0.782 06/21/2023 19:26TO-15 Heptane µg/m3 0.143
J0.838 06/21/2023 19:26TO-15 n-Hexane µg/m3 0.047
39.0 06/21/2023 19:26TO-15 Isopropyl Alcohol µg/m3 0.139
1.52 06/21/2023 19:26TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224
1.89 06/21/2023 19:26TO-15 Methylene Chloride µg/m3 0.488
5.27 06/21/2023 19:26TO-15 Naphthalene µg/m3 0.183
3.14 06/21/2023 19:26TO-15 Styrene µg/m3 0.124
31.3 06/21/2023 19:26TO-15 Tetrachloroethene µg/m3 0.181
4.54 06/21/2023 19:26TO-15 Toluene µg/m3 0.090
70.6 06/21/2023 19:26TO-15 Trichlorofluoromethane µg/m3 0.130
5.35 06/21/2023 19:26TO-15 1,2,4-Trimethylbenzene µg/m3 0.110
J0.737 06/21/2023 19:26TO-15 1,3,5-Trimethylbenzene µg/m3 0.236
J2.09 06/21/2023 19:26TO-15 o-Xylene µg/m3 0.157
6.44 06/21/2023 19:26TO-15 m,p-Xylene µg/m3 0.217
J8.53 06/21/2023 19:26TO-15 Xylene (Total)µg/m3 0.157
V 98657MP-5
2350 06/21/2023 00:56TO-15 Acetone µg/m3 4.04
J1.53 06/21/2023 20:20TO-15 Benzene µg/m3 0.073
J4.11 06/21/2023 20:20TO-15 Carbon Disulfide µg/m3 0.060
72.8 06/21/2023 20:20TO-15 Chloroform µg/m3 0.086
J0.631 06/21/2023 20:20TO-15 1,3-Dichlorobenzene µg/m3 0.174
3.32 06/21/2023 20:20TO-15 Dichlorodifluoromethane µg/m3 0.134
J0.918 06/21/2023 20:20TO-15 1,2-Dichloroethane µg/m3 0.129
38.5 06/21/2023 20:20TO-15 1,2-Dichloropropane µg/m3 0.205
2.33 06/21/2023 20:20TO-15 Ethyl Acetate µg/m3 0.136
J1.60 06/21/2023 20:20TO-15 Ethylbenzene µg/m3 0.106
J0.934 06/21/2023 20:20TO-15 4-Ethyltoluene µg/m3 0.128
Page 8 of 62
Summary of Detected Analytes
QualifiersAnalyzedUnitsResult
Report Number:
Client Sample ID
Method Parameters
Lab Sample ID
23-167-0022
Report Limit
Project:North Hills
V 98657MP-5
J0.728 06/21/2023 20:20TO-15 1,1,2-Trichloro-1,2,2-trifluoroethane µg/m3 0.561
14.0 06/21/2023 20:20TO-15 Heptane µg/m3 0.143
1.92 06/21/2023 20:20TO-15 n-Hexane µg/m3 0.047
3.82 06/21/2023 20:20TO-15 2-Hexanone µg/m3 0.285
67.6 06/21/2023 20:20TO-15 Isopropyl Alcohol µg/m3 0.139
19.3 06/21/2023 20:20TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224
6.58 06/21/2023 20:20TO-15 Methyl tert-butyl ether (MTBE)µg/m3 0.033
3.96 06/21/2023 20:20TO-15 4-Methyl-2-Pentanone µg/m3 0.121
4.93 06/21/2023 20:20TO-15 Methylene Chloride µg/m3 0.488
5.37 06/21/2023 20:20TO-15 Naphthalene µg/m3 0.183
49.0 06/21/2023 20:20TO-15 Propene µg/m3 0.242
3.45 06/21/2023 20:20TO-15 Styrene µg/m3 0.124
106 06/21/2023 20:20TO-15 Tetrachloroethene µg/m3 0.181
2.53 06/21/2023 20:20TO-15 Tetrahydrofuran µg/m3 0.107
14.1 06/21/2023 20:20TO-15 Toluene µg/m3 0.090
J0.785 06/21/2023 20:20TO-15 1,1,1-Trichloroethane µg/m3 0.144
J1.02 06/21/2023 20:20TO-15 Trichloroethene µg/m3 0.199
1830 06/21/2023 00:56TO-15 Trichlorofluoromethane µg/m3 2.60
5.76 06/21/2023 20:20TO-15 1,2,4-Trimethylbenzene µg/m3 0.110
J0.983 06/21/2023 20:20TO-15 1,3,5-Trimethylbenzene µg/m3 0.236
2.54 06/21/2023 20:20TO-15 o-Xylene µg/m3 0.157
7.02 06/21/2023 20:20TO-15 m,p-Xylene µg/m3 0.217
9.56 06/21/2023 20:20TO-15 Xylene (Total)µg/m3 0.157
V 98658MP-9
47.2 06/21/2023 21:10TO-15 Acetone µg/m3 0.202
J1.14 06/21/2023 21:10TO-15 Benzene µg/m3 0.073
J4.10 06/21/2023 21:10TO-15 Carbon Disulfide µg/m3 0.060
13.0 06/21/2023 21:10TO-15 Chloroform µg/m3 0.086
3.18 06/21/2023 21:10TO-15 Dichlorodifluoromethane µg/m3 0.134
8.00 06/21/2023 21:10TO-15 1,2-Dichloropropane µg/m3 0.205
J1.45 06/21/2023 21:10TO-15 Ethyl Acetate µg/m3 0.136
J1.40 06/21/2023 21:10TO-15 Ethylbenzene µg/m3 0.106
J1.27 06/21/2023 21:10TO-15 4-Ethyltoluene µg/m3 0.128
J0.781 06/21/2023 21:10TO-15 1,1,2-Trichloro-1,2,2-trifluoroethane µg/m3 0.561
25.7 06/21/2023 21:10TO-15 Heptane µg/m3 0.143
2.83 06/21/2023 21:10TO-15 n-Hexane µg/m3 0.047
Page 9 of 62
Summary of Detected Analytes
QualifiersAnalyzedUnitsResult
Report Number:
Client Sample ID
Method Parameters
Lab Sample ID
23-167-0022
Report Limit
Project:North Hills
V 98658MP-9
27.6 06/21/2023 21:10TO-15 Isopropyl Alcohol µg/m3 0.139
3.02 06/21/2023 21:10TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224
J0.823 06/21/2023 21:10TO-15 4-Methyl-2-Pentanone µg/m3 0.121
5.44 06/21/2023 21:10TO-15 Naphthalene µg/m3 0.183
19.4 06/21/2023 21:10TO-15 Propene µg/m3 0.242
4.01 06/21/2023 21:10TO-15 Styrene µg/m3 0.124
24.6 06/21/2023 21:10TO-15 Tetrachloroethene µg/m3 0.181
4.62 06/21/2023 21:10TO-15 Tetrahydrofuran µg/m3 0.107
16.3 06/21/2023 21:10TO-15 Toluene µg/m3 0.090
623 06/21/2023 01:33TO-15 Trichlorofluoromethane µg/m3 2.60
6.19 06/21/2023 21:10TO-15 1,2,4-Trimethylbenzene µg/m3 0.110
J1.08 06/21/2023 21:10TO-15 1,3,5-Trimethylbenzene µg/m3 0.236
J2.04 06/21/2023 21:10TO-15 o-Xylene µg/m3 0.157
6.64 06/21/2023 21:10TO-15 m,p-Xylene µg/m3 0.217
J8.68 06/21/2023 21:10TO-15 Xylene (Total)µg/m3 0.157
V 98659MP-Duplicate
333 06/21/2023 02:10TO-15 Acetone µg/m3 4.04
J0.511 06/21/2023 22:03TO-15 Benzene µg/m3 0.073
J4.35 06/21/2023 22:03TO-15 Carbon Disulfide µg/m3 0.060
14.4 06/21/2023 22:03TO-15 Chloroform µg/m3 0.086
3.11 06/21/2023 22:03TO-15 Dichlorodifluoromethane µg/m3 0.134
J1.72 06/21/2023 22:03TO-15 Ethyl Acetate µg/m3 0.136
J1.11 06/21/2023 22:03TO-15 Ethylbenzene µg/m3 0.106
J0.727 06/21/2023 22:03TO-15 4-Ethyltoluene µg/m3 0.128
J0.620 06/21/2023 22:03TO-15 1,1,2-Trichloro-1,2,2-trifluoroethane µg/m3 0.561
196 06/21/2023 22:03TO-15 Heptane µg/m3 0.143
2.34 06/21/2023 22:03TO-15 n-Hexane µg/m3 0.047
34.5 06/21/2023 22:03TO-15 Isopropyl Alcohol µg/m3 0.139
2.24 06/21/2023 22:03TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224
J1.12 06/21/2023 22:03TO-15 4-Methyl-2-Pentanone µg/m3 0.121
J1.59 06/21/2023 22:03TO-15 Methylene Chloride µg/m3 0.488
5.28 06/21/2023 22:03TO-15 Naphthalene µg/m3 0.183
32.3 06/21/2023 22:03TO-15 Tetrachloroethene µg/m3 0.181
1.88 06/21/2023 22:03TO-15 Tetrahydrofuran µg/m3 0.107
3.79 06/21/2023 22:03TO-15 Toluene µg/m3 0.090
67.8 06/21/2023 22:03TO-15 Trichlorofluoromethane µg/m3 0.130
Page 10 of 62
Summary of Detected Analytes
QualifiersAnalyzedUnitsResult
Report Number:
Client Sample ID
Method Parameters
Lab Sample ID
23-167-0022
Report Limit
Project:North Hills
V 98659MP-Duplicate
4.87 06/21/2023 22:03TO-15 1,2,4-Trimethylbenzene µg/m3 0.110
J0.658 06/21/2023 22:03TO-15 1,3,5-Trimethylbenzene µg/m3 0.236
J1.21 06/21/2023 22:03TO-15 Vinyl Acetate µg/m3 0.224
J1.72 06/21/2023 22:03TO-15 o-Xylene µg/m3 0.157
J5.40 06/21/2023 22:03TO-15 m,p-Xylene µg/m3 0.217
J7.12 06/21/2023 22:03TO-15 Xylene (Total)µg/m3 0.157
V 98660MP-10
54.6 06/21/2023 22:59TO-15 Acetone µg/m3 0.202
J0.565 06/21/2023 22:59TO-15 Benzene µg/m3 0.073
J2.61 06/21/2023 22:59TO-15 Carbon Disulfide µg/m3 0.060
36.9 06/21/2023 22:59TO-15 Chloroform µg/m3 0.086
3.38 06/21/2023 22:59TO-15 Dichlorodifluoromethane µg/m3 0.134
J1.65 06/21/2023 22:59TO-15 Ethyl Acetate µg/m3 0.136
J1.04 06/21/2023 22:59TO-15 Ethylbenzene µg/m3 0.106
J0.634 06/21/2023 22:59TO-15 4-Ethyltoluene µg/m3 0.128
J0.758 06/21/2023 22:59TO-15 1,1,2-Trichloro-1,2,2-trifluoroethane µg/m3 0.561
35.8 06/21/2023 22:59TO-15 Heptane µg/m3 0.143
7.23 06/21/2023 22:59TO-15 n-Hexane µg/m3 0.047
41.3 06/21/2023 22:59TO-15 Isopropyl Alcohol µg/m3 0.139
6.66 06/21/2023 22:59TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224
J0.651 06/21/2023 22:59TO-15 4-Methyl-2-Pentanone µg/m3 0.121
J1.48 06/21/2023 22:59TO-15 Methylene Chloride µg/m3 0.488
5.35 06/21/2023 22:59TO-15 Naphthalene µg/m3 0.183
362 06/21/2023 02:47TO-15 Tetrachloroethene µg/m3 3.62
25.5 06/21/2023 22:59TO-15 Tetrahydrofuran µg/m3 0.107
26.0 06/21/2023 22:59TO-15 Toluene µg/m3 0.090
J0.666 06/21/2023 22:59TO-15 Trichloroethene µg/m3 0.199
399 06/21/2023 02:47TO-15 Trichlorofluoromethane µg/m3 2.60
4.83 06/21/2023 22:59TO-15 1,2,4-Trimethylbenzene µg/m3 0.110
J0.604 06/21/2023 22:59TO-15 1,3,5-Trimethylbenzene µg/m3 0.236
J1.51 06/21/2023 22:59TO-15 o-Xylene µg/m3 0.157
J4.92 06/21/2023 22:59TO-15 m,p-Xylene µg/m3 0.217
J6.43 06/21/2023 22:59TO-15 Xylene (Total)µg/m3 0.157
V 98661MP-11
107 06/21/2023 23:52TO-15 Acetone µg/m3 0.202
11.9 06/21/2023 23:52TO-15 Benzene µg/m3 0.073
Page 11 of 62
Summary of Detected Analytes
QualifiersAnalyzedUnitsResult
Report Number:
Client Sample ID
Method Parameters
Lab Sample ID
23-167-0022
Report Limit
Project:North Hills
V 98661MP-11
10.3 06/21/2023 23:52TO-15 Carbon Disulfide µg/m3 0.060
J0.949 06/21/2023 23:52TO-15 Carbon Tetrachloride µg/m3 0.155
352 06/21/2023 03:24TO-15 Chloroform µg/m3 1.73
3.23 06/21/2023 23:52TO-15 Chloromethane µg/m3 0.067
3.22 06/21/2023 23:52TO-15 Dichlorodifluoromethane µg/m3 0.134
63.6 06/21/2023 23:52TO-15 1,2-Dichloropropane µg/m3 0.205
2.06 06/21/2023 23:52TO-15 Ethyl Acetate µg/m3 0.136
J1.87 06/21/2023 23:52TO-15 Ethylbenzene µg/m3 0.106
J0.830 06/21/2023 23:52TO-15 4-Ethyltoluene µg/m3 0.128
J0.620 06/21/2023 23:52TO-15 1,1,2-Trichloro-1,2,2-trifluoroethane µg/m3 0.561
89.2 06/21/2023 23:52TO-15 Heptane µg/m3 0.143
3.37 06/21/2023 23:52TO-15 n-Hexane µg/m3 0.047
12.7 06/21/2023 23:52TO-15 Isopropyl Alcohol µg/m3 0.139
7.35 06/21/2023 23:52TO-15 Methyl Ethyl Ketone (MEK)µg/m3 0.224
8.25 06/21/2023 23:52TO-15 Methyl tert-butyl ether (MTBE)µg/m3 0.033
J1.23 06/21/2023 23:52TO-15 4-Methyl-2-Pentanone µg/m3 0.121
4.53 06/21/2023 23:52TO-15 Methylene Chloride µg/m3 0.488
5.21 06/21/2023 23:52TO-15 Naphthalene µg/m3 0.183
32.4 06/21/2023 23:52TO-15 Propene µg/m3 0.242
112 06/21/2023 23:52TO-15 Tetrachloroethene µg/m3 0.181
32.2 06/21/2023 23:52TO-15 Tetrahydrofuran µg/m3 0.107
15.4 06/21/2023 23:52TO-15 Toluene µg/m3 0.090
83.5 06/21/2023 23:52TO-15 Trichlorofluoromethane µg/m3 0.130
5.31 06/21/2023 23:52TO-15 1,2,4-Trimethylbenzene µg/m3 0.110
J0.747 06/21/2023 23:52TO-15 1,3,5-Trimethylbenzene µg/m3 0.236
2.29 06/21/2023 23:52TO-15 o-Xylene µg/m3 0.157
6.47 06/21/2023 23:52TO-15 m,p-Xylene µg/m3 0.217
8.76 06/21/2023 23:52TO-15 Xylene (Total)µg/m3 0.157
Page 12 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-12
98651 Matrix:
6/14/2023 10:08
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34530 06/20/23 09:00 V34661 06/19/23 09:00
123 µg/m3 4.04 95.0Acetone 20 06/20/23 02:48 V34664ENM
0.645 J
µg/m3 0.073 1.60
Benzene 1 06/20/23 20:23 V34532ENM
<0.147 µg/m3 0.147 10.4Benzyl Chloride 1 06/20/23 20:23 V34532ENM
<0.150 µg/m3 0.150 3.35Bromodichloromethane 1 06/20/23 20:23 V34532ENM
<0.153 µg/m3 0.153 5.17Bromoform 1 06/20/23 20:23 V34532ENM
<0.115 µg/m3 0.115 1.94Bromomethane 1 06/20/23 20:23 V34532ENM
<0.328 µg/m3 0.328 1.111,3-Butadiene 1 06/20/23 20:23 V34532ENM
3.31 J µg/m3 0.060 6.23Carbon Disulfide 1 06/20/23 20:23 V34532ENM
<0.155 µg/m3 0.155 3.15
Carbon Tetrachloride 1 06/20/23 20:23 V34532ENM
<0.107 µg/m3 0.107 2.30Chlorobenzene 1 06/20/23 20:23 V34532ENM
<0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 06/20/23 20:23 V34532ENM
<0.164 µg/m3 0.164 1.32Chloroethane 1 06/20/23 20:23 V34532ENM
10.7 µg/m3 0.086 2.44Chloroform 1 06/20/23 20:23 V34532ENM
<0.067 µg/m3 0.067 1.03Chloromethane 1 06/20/23 20:23 V34532ENM
<0.161 µg/m3 0.161 3.44Cyclohexane 1 06/20/23 20:23 V34532ENM
<0.151 µg/m3 0.151 3.841,2-Dibromoethane 1 06/20/23 20:23 V34532ENM
<0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 06/20/23 20:23 V34532ENM
<0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 06/20/23 20:23 V34532ENM
<0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 06/20/23 20:23 V34532ENM
4.00 µg/m3 0.134 2.47Dichlorodifluoromethane 1 06/20/23 20:23 V34532ENM
<0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 06/20/23 20:23 V34532ENM
<0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 06/20/23 20:23 V34532ENM
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 13 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-12
98651 Matrix:
6/14/2023 10:08
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34530 06/20/23 09:00 V34661 06/19/23 09:00
<0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 06/20/23 20:23 V34532ENM
<0.095 µg/m3 0.095 1.98
cis-1,2-Dichloroethene 1 06/20/23 20:23 V34532ENM
3.01 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 06/20/23 20:23 V34532ENM
<0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 06/20/23 20:23 V34532ENM
<0.622 µg/m3 0.622 3.501,2-Dichlorotetrafluoroethane 1 06/20/23 20:23 V34532ENM
<0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 06/20/23 20:23 V34532ENM
<0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 06/20/23 20:23 V34532ENM
<0.435 µg/m3 0.435 1.801,4-Dioxane 1 06/20/23 20:23 V34532ENM
2.90 µg/m3 0.136 1.80
Ethyl Acetate 1 06/20/23 20:23 V34532ENM
1.19 J µg/m3 0.106 2.17Ethylbenzene 1 06/20/23 20:23 V34532ENM
0.643 J µg/m3 0.128 2.464-Ethyltoluene 1 06/20/23 20:23 V34532ENM
0.628 J µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 06/20/23 20:23 V34532ENM
45.9 µg/m3 0.143 2.05Heptane 1 06/20/23 20:23 V34532ENM
<0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 06/20/23 20:23 V34532ENM
<0.047 µg/m3 0.047 1.76n-Hexane 1 06/20/23 20:23 V34532ENM
<0.285 µg/m3 0.285 2.052-Hexanone 1 06/20/23 20:23 V34532ENM
78.9 µg/m3 0.139 4.92Isopropyl Alcohol 1 06/20/23 20:23 V34532ENM
2.58 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 06/20/23 20:23 V34532ENM
<0.033 µg/m3 0.033 1.80Methyl tert-butyl ether (MTBE)1 06/20/23 20:23 V34532ENM
0.790 J µg/m3 0.121 2.054-Methyl-2-Pentanone 1 06/20/23 20:23 V34532ENM
8.33 µg/m3 0.488 1.74Methylene Chloride 1 06/20/23 20:23 V34532ENM
5.18 µg/m3 0.183 2.62Naphthalene 1 06/20/23 20:23 V34532ENM
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 14 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-12
98651 Matrix:
6/14/2023 10:08
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34530 06/20/23 09:00 V34661 06/19/23 09:00
<0.242 µg/m3 0.242 0.860Propene 1 06/20/23 20:23 V34532ENM
<0.124 µg/m3 0.124 2.13
Styrene 1 06/20/23 20:23 V34532ENM
<0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 06/20/23 20:23 V34532ENM
20.5 µg/m3 0.181 3.39Tetrachloroethene 1 06/20/23 20:23 V34532ENM
1.82 µg/m3 0.107 1.47Tetrahydrofuran 1 06/20/23 20:23 V34532ENM
3.62 µg/m3 0.090 1.88Toluene 1 06/20/23 20:23 V34532ENM
<0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 06/20/23 20:23 V34532ENM
<0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 06/20/23 20:23 V34532ENM
<0.087 µg/m3 0.087 2.73
1,1,2-Trichloroethane 1 06/20/23 20:23 V34532ENM
<0.199 µg/m3 0.199 2.15Trichloroethene 1 06/20/23 20:23 V34532ENM
55.8 µg/m3 0.130 2.81Trichlorofluoromethane 1 06/20/23 20:23 V34532ENM
4.68 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 06/20/23 20:23 V34532ENM
0.688 J µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 06/20/23 20:23 V34532ENM
<0.224 µg/m3 0.224 1.76Vinyl Acetate 1 06/20/23 20:23 V34532ENM
<0.127 µg/m3 0.127 1.28Vinyl Chloride 1 06/20/23 20:23 V34532ENM
1.73 J µg/m3 0.157 2.17o-Xylene 1 06/20/23 20:23 V34532ENM
5.52 J µg/m3 0.217 5.65m,p-Xylene 1 06/20/23 20:23 V34532ENM
7.25 J µg/m3 0.157 2.17Xylene (Total)1 06/20/23 20:23 V34532
Surrogate: 4-Bromofluorobenzene 97.5 Limits: 70-130%06/20/23 20:231 ENM V34532
Surrogate: 4-Bromofluorobenzene 96.6 Limits: 70-130%06/20/23 02:4820 ENM V34664
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 15 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-15
98652 Matrix:
6/14/2023 8:37
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34530 06/20/23 09:00
29.0 µg/m3 0.202 4.75Acetone 1 06/20/23 21:16 V34532ENM
0.827 J
µg/m3 0.073 1.60
Benzene 1 06/20/23 21:16 V34532ENM
<0.147 µg/m3 0.147 10.4Benzyl Chloride 1 06/20/23 21:16 V34532ENM
<0.150 µg/m3 0.150 3.35Bromodichloromethane 1 06/20/23 21:16 V34532ENM
<0.153 µg/m3 0.153 5.17Bromoform 1 06/20/23 21:16 V34532ENM
<0.115 µg/m3 0.115 1.94Bromomethane 1 06/20/23 21:16 V34532ENM
<0.328 µg/m3 0.328 1.111,3-Butadiene 1 06/20/23 21:16 V34532ENM
0.610 J µg/m3 0.060 6.23Carbon Disulfide 1 06/20/23 21:16 V34532ENM
<0.155 µg/m3 0.155 3.15
Carbon Tetrachloride 1 06/20/23 21:16 V34532ENM
<0.107 µg/m3 0.107 2.30Chlorobenzene 1 06/20/23 21:16 V34532ENM
<0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 06/20/23 21:16 V34532ENM
<0.164 µg/m3 0.164 1.32Chloroethane 1 06/20/23 21:16 V34532ENM
<0.086 µg/m3 0.086 2.44Chloroform 1 06/20/23 21:16 V34532ENM
<0.067 µg/m3 0.067 1.03Chloromethane 1 06/20/23 21:16 V34532ENM
<0.161 µg/m3 0.161 3.44Cyclohexane 1 06/20/23 21:16 V34532ENM
<0.151 µg/m3 0.151 3.841,2-Dibromoethane 1 06/20/23 21:16 V34532ENM
<0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 06/20/23 21:16 V34532ENM
<0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 06/20/23 21:16 V34532ENM
<0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 06/20/23 21:16 V34532ENM
3.15 µg/m3 0.134 2.47Dichlorodifluoromethane 1 06/20/23 21:16 V34532ENM
<0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 06/20/23 21:16 V34532ENM
<0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 06/20/23 21:16 V34532ENM
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 16 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-15
98652 Matrix:
6/14/2023 8:37
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34530 06/20/23 09:00
<0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 06/20/23 21:16 V34532ENM
<0.095 µg/m3 0.095 1.98
cis-1,2-Dichloroethene 1 06/20/23 21:16 V34532ENM
4.35 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 06/20/23 21:16 V34532ENM
<0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 06/20/23 21:16 V34532ENM
<0.622 µg/m3 0.622 3.501,2-Dichlorotetrafluoroethane 1 06/20/23 21:16 V34532ENM
<0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 06/20/23 21:16 V34532ENM
<0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 06/20/23 21:16 V34532ENM
<0.435 µg/m3 0.435 1.801,4-Dioxane 1 06/20/23 21:16 V34532ENM
2.24 µg/m3 0.136 1.80
Ethyl Acetate 1 06/20/23 21:16 V34532ENM
1.61 J µg/m3 0.106 2.17Ethylbenzene 1 06/20/23 21:16 V34532ENM
0.973 J µg/m3 0.128 2.464-Ethyltoluene 1 06/20/23 21:16 V34532ENM
<0.561 µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 06/20/23 21:16 V34532ENM
1.50 J µg/m3 0.143 2.05Heptane 1 06/20/23 21:16 V34532ENM
<0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 06/20/23 21:16 V34532ENM
1.09 J µg/m3 0.047 1.76n-Hexane 1 06/20/23 21:16 V34532ENM
0.929 J µg/m3 0.285 2.052-Hexanone 1 06/20/23 21:16 V34532ENM
37.7 µg/m3 0.139 4.92Isopropyl Alcohol 1 06/20/23 21:16 V34532ENM
3.61 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 06/20/23 21:16 V34532ENM
<0.033 µg/m3 0.033 1.80Methyl tert-butyl ether (MTBE)1 06/20/23 21:16 V34532ENM
0.589 J µg/m3 0.121 2.054-Methyl-2-Pentanone 1 06/20/23 21:16 V34532ENM
5.86 µg/m3 0.488 1.74Methylene Chloride 1 06/20/23 21:16 V34532ENM
6.97 µg/m3 0.183 2.62Naphthalene 1 06/20/23 21:16 V34532ENM
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 17 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-15
98652 Matrix:
6/14/2023 8:37
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34530 06/20/23 09:00
<0.242 µg/m3 0.242 0.860Propene 1 06/20/23 21:16 V34532ENM
3.55 µg/m3 0.124 2.13
Styrene 1 06/20/23 21:16 V34532ENM
<0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 06/20/23 21:16 V34532ENM
12.8 µg/m3 0.181 3.39Tetrachloroethene 1 06/20/23 21:16 V34532ENM
3.58 µg/m3 0.107 1.47Tetrahydrofuran 1 06/20/23 21:16 V34532ENM
7.15 µg/m3 0.090 1.88Toluene 1 06/20/23 21:16 V34532ENM
<0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 06/20/23 21:16 V34532ENM
<0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 06/20/23 21:16 V34532ENM
<0.087 µg/m3 0.087 2.73
1,1,2-Trichloroethane 1 06/20/23 21:16 V34532ENM
<0.199 µg/m3 0.199 2.15Trichloroethene 1 06/20/23 21:16 V34532ENM
3.03 µg/m3 0.130 2.81Trichlorofluoromethane 1 06/20/23 21:16 V34532ENM
5.77 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 06/20/23 21:16 V34532ENM
0.860 J µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 06/20/23 21:16 V34532ENM
<0.224 µg/m3 0.224 1.76Vinyl Acetate 1 06/20/23 21:16 V34532ENM
<0.127 µg/m3 0.127 1.28Vinyl Chloride 1 06/20/23 21:16 V34532ENM
2.44 µg/m3 0.157 2.17o-Xylene 1 06/20/23 21:16 V34532ENM
6.83 µg/m3 0.217 5.65m,p-Xylene 1 06/20/23 21:16 V34532ENM
9.27 µg/m3 0.157 2.17Xylene (Total)1 06/20/23 21:16 V34532
Surrogate: 4-Bromofluorobenzene 97.2 Limits: 70-130%06/20/23 21:161 ENM V34532
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 18 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-13
98653 Matrix:
6/14/2023 9:22
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34643 06/21/23 09:00
18.4 µg/m3 0.202 4.75Acetone 1 06/21/23 16:46 V34658ENM
0.993 J
µg/m3 0.073 1.60
Benzene 1 06/21/23 16:46 V34658ENM
<0.147 µg/m3 0.147 10.4Benzyl Chloride 1 06/21/23 16:46 V34658ENM
<0.150 µg/m3 0.150 3.35Bromodichloromethane 1 06/21/23 16:46 V34658ENM
<0.153 µg/m3 0.153 5.17Bromoform 1 06/21/23 16:46 V34658ENM
<0.115 µg/m3 0.115 1.94Bromomethane 1 06/21/23 16:46 V34658ENM
<0.328 µg/m3 0.328 1.111,3-Butadiene 1 06/21/23 16:46 V34658ENM
2.80 J µg/m3 0.060 6.23Carbon Disulfide 1 06/21/23 16:46 V34658ENM
0.673 J
µg/m3 0.155 3.15
Carbon Tetrachloride 1 06/21/23 16:46 V34658ENM
<0.107 µg/m3 0.107 2.30Chlorobenzene 1 06/21/23 16:46 V34658ENM
<0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 06/21/23 16:46 V34658ENM
<0.164 µg/m3 0.164 1.32Chloroethane 1 06/21/23 16:46 V34658ENM
30.7 µg/m3 0.086 2.44Chloroform 1 06/21/23 16:46 V34658ENM
<0.067 µg/m3 0.067 1.03Chloromethane 1 06/21/23 16:46 V34658ENM
4.77 µg/m3 0.161 3.44Cyclohexane 1 06/21/23 16:46 V34658ENM
<0.151 µg/m3 0.151 3.841,2-Dibromoethane 1 06/21/23 16:46 V34658ENM
<0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 06/21/23 16:46 V34658ENM
<0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 06/21/23 16:46 V34658ENM
<0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 06/21/23 16:46 V34658ENM
3.16 µg/m3 0.134 2.47Dichlorodifluoromethane 1 06/21/23 16:46 V34658ENM
<0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 06/21/23 16:46 V34658ENM
<0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 06/21/23 16:46 V34658ENM
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 19 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-13
98653 Matrix:
6/14/2023 9:22
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34643 06/21/23 09:00
<0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 06/21/23 16:46 V34658ENM
<0.095 µg/m3 0.095 1.98
cis-1,2-Dichloroethene 1 06/21/23 16:46 V34658ENM
0.745 J µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 06/21/23 16:46 V34658ENM
2.65 µg/m3 0.205 2.311,2-Dichloropropane 1 06/21/23 16:46 V34658ENM
<0.622 µg/m3 0.622 3.501,2-Dichlorotetrafluoroethane 1 06/21/23 16:46 V34658ENM
<0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 06/21/23 16:46 V34658ENM
<0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 06/21/23 16:46 V34658ENM
<0.435 µg/m3 0.435 1.801,4-Dioxane 1 06/21/23 16:46 V34658ENM
1.92 µg/m3 0.136 1.80
Ethyl Acetate 1 06/21/23 16:46 V34658ENM
1.24 J µg/m3 0.106 2.17Ethylbenzene 1 06/21/23 16:46 V34658ENM
0.683 J µg/m3 0.128 2.464-Ethyltoluene 1 06/21/23 16:46 V34658ENM
0.636 J µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 06/21/23 16:46 V34658ENM
2.56 µg/m3 0.143 2.05Heptane 1 06/21/23 16:46 V34658ENM
<0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 06/21/23 16:46 V34658ENM
0.807 J µg/m3 0.047 1.76n-Hexane 1 06/21/23 16:46 V34658ENM
0.557 J µg/m3 0.285 2.052-Hexanone 1 06/21/23 16:46 V34658ENM
32.3 µg/m3 0.139 4.92Isopropyl Alcohol 1 06/21/23 16:46 V34658ENM
2.12 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 06/21/23 16:46 V34658ENM
<0.033 µg/m3 0.033 1.80Methyl tert-butyl ether (MTBE)1 06/21/23 16:46 V34658ENM
0.524 J µg/m3 0.121 2.054-Methyl-2-Pentanone 1 06/21/23 16:46 V34658ENM
1.89 µg/m3 0.488 1.74Methylene Chloride 1 06/21/23 16:46 V34658ENM
5.52 µg/m3 0.183 2.62Naphthalene 1 06/21/23 16:46 V34658ENM
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 20 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-13
98653 Matrix:
6/14/2023 9:22
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34643 06/21/23 09:00
<0.242 µg/m3 0.242 0.860Propene 1 06/21/23 16:46 V34658ENM
<0.124 µg/m3 0.124 2.13
Styrene 1 06/21/23 16:46 V34658ENM
<0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 06/21/23 16:46 V34658ENM
153 µg/m3 0.181 3.39Tetrachloroethene 1 06/21/23 16:46 V34658ENM
1.77 µg/m3 0.107 1.47Tetrahydrofuran 1 06/21/23 16:46 V34658ENM
4.89 µg/m3 0.090 1.88Toluene 1 06/21/23 16:46 V34658ENM
<0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 06/21/23 16:46 V34658ENM
<0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 06/21/23 16:46 V34658ENM
<0.087 µg/m3 0.087 2.73
1,1,2-Trichloroethane 1 06/21/23 16:46 V34658ENM
<0.199 µg/m3 0.199 2.15Trichloroethene 1 06/21/23 16:46 V34658ENM
179 µg/m3 0.130 2.81Trichlorofluoromethane 1 06/21/23 16:46 V34658ENM
5.01 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 06/21/23 16:46 V34658ENM
0.761 J µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 06/21/23 16:46 V34658ENM
<0.224 µg/m3 0.224 1.76Vinyl Acetate 1 06/21/23 16:46 V34658ENM
<0.127 µg/m3 0.127 1.28Vinyl Chloride 1 06/21/23 16:46 V34658ENM
1.77 J µg/m3 0.157 2.17o-Xylene 1 06/21/23 16:46 V34658ENM
5.81 µg/m3 0.217 5.65m,p-Xylene 1 06/21/23 16:46 V34658ENM
7.58 J µg/m3 0.157 2.17Xylene (Total)1 06/21/23 16:46 V34658
Surrogate: 4-Bromofluorobenzene 98.9 Limits: 70-130%06/21/23 16:461 ENM V34658
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 21 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-17
98654 Matrix:
6/14/2023 7:42
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34643 06/21/23 09:00
12.7 µg/m3 0.202 4.75Acetone 1 06/21/23 17:38 V34658ENM
0.501 J
µg/m3 0.073 1.60
Benzene 1 06/21/23 17:38 V34658ENM
<0.147 µg/m3 0.147 10.4Benzyl Chloride 1 06/21/23 17:38 V34658ENM
<0.150 µg/m3 0.150 3.35Bromodichloromethane 1 06/21/23 17:38 V34658ENM
<0.153 µg/m3 0.153 5.17Bromoform 1 06/21/23 17:38 V34658ENM
<0.115 µg/m3 0.115 1.94Bromomethane 1 06/21/23 17:38 V34658ENM
<0.328 µg/m3 0.328 1.111,3-Butadiene 1 06/21/23 17:38 V34658ENM
1.39 J µg/m3 0.060 6.23Carbon Disulfide 1 06/21/23 17:38 V34658ENM
<0.155 µg/m3 0.155 3.15
Carbon Tetrachloride 1 06/21/23 17:38 V34658ENM
<0.107 µg/m3 0.107 2.30Chlorobenzene 1 06/21/23 17:38 V34658ENM
<0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 06/21/23 17:38 V34658ENM
<0.164 µg/m3 0.164 1.32Chloroethane 1 06/21/23 17:38 V34658ENM
6.41 µg/m3 0.086 2.44Chloroform 1 06/21/23 17:38 V34658ENM
<0.067 µg/m3 0.067 1.03Chloromethane 1 06/21/23 17:38 V34658ENM
<0.161 µg/m3 0.161 3.44Cyclohexane 1 06/21/23 17:38 V34658ENM
<0.151 µg/m3 0.151 3.841,2-Dibromoethane 1 06/21/23 17:38 V34658ENM
<0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 06/21/23 17:38 V34658ENM
<0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 06/21/23 17:38 V34658ENM
<0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 06/21/23 17:38 V34658ENM
3.24 µg/m3 0.134 2.47Dichlorodifluoromethane 1 06/21/23 17:38 V34658ENM
<0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 06/21/23 17:38 V34658ENM
<0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 06/21/23 17:38 V34658ENM
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 22 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-17
98654 Matrix:
6/14/2023 7:42
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34643 06/21/23 09:00
<0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 06/21/23 17:38 V34658ENM
<0.095 µg/m3 0.095 1.98
cis-1,2-Dichloroethene 1 06/21/23 17:38 V34658ENM
<0.108 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 06/21/23 17:38 V34658ENM
<0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 06/21/23 17:38 V34658ENM
<0.622 µg/m3 0.622 3.501,2-Dichlorotetrafluoroethane 1 06/21/23 17:38 V34658ENM
<0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 06/21/23 17:38 V34658ENM
<0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 06/21/23 17:38 V34658ENM
<0.435 µg/m3 0.435 1.801,4-Dioxane 1 06/21/23 17:38 V34658ENM
2.33 µg/m3 0.136 1.80
Ethyl Acetate 1 06/21/23 17:38 V34658ENM
1.58 J µg/m3 0.106 2.17Ethylbenzene 1 06/21/23 17:38 V34658ENM
0.904 J µg/m3 0.128 2.464-Ethyltoluene 1 06/21/23 17:38 V34658ENM
0.620 J µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 06/21/23 17:38 V34658ENM
0.795 J µg/m3 0.143 2.05Heptane 1 06/21/23 17:38 V34658ENM
<0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 06/21/23 17:38 V34658ENM
0.683 J µg/m3 0.047 1.76n-Hexane 1 06/21/23 17:38 V34658ENM
<0.285 µg/m3 0.285 2.052-Hexanone 1 06/21/23 17:38 V34658ENM
31.2 µg/m3 0.139 4.92Isopropyl Alcohol 1 06/21/23 17:38 V34658ENM
1.66 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 06/21/23 17:38 V34658ENM
<0.033 µg/m3 0.033 1.80Methyl tert-butyl ether (MTBE)1 06/21/23 17:38 V34658ENM
0.745 J µg/m3 0.121 2.054-Methyl-2-Pentanone 1 06/21/23 17:38 V34658ENM
1.59 J µg/m3 0.488 1.74Methylene Chloride 1 06/21/23 17:38 V34658ENM
5.75 µg/m3 0.183 2.62Naphthalene 1 06/21/23 17:38 V34658ENM
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 23 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-17
98654 Matrix:
6/14/2023 7:42
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34643 06/21/23 09:00
<0.242 µg/m3 0.242 0.860Propene 1 06/21/23 17:38 V34658ENM
3.14 µg/m3 0.124 2.13
Styrene 1 06/21/23 17:38 V34658ENM
<0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 06/21/23 17:38 V34658ENM
252 µg/m3 0.181 3.39Tetrachloroethene 1 06/21/23 17:38 V34658ENM
1.64 µg/m3 0.107 1.47Tetrahydrofuran 1 06/21/23 17:38 V34658ENM
4.37 µg/m3 0.090 1.88Toluene 1 06/21/23 17:38 V34658ENM
<0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 06/21/23 17:38 V34658ENM
<0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 06/21/23 17:38 V34658ENM
<0.087 µg/m3 0.087 2.73
1,1,2-Trichloroethane 1 06/21/23 17:38 V34658ENM
<0.199 µg/m3 0.199 2.15Trichloroethene 1 06/21/23 17:38 V34658ENM
160 µg/m3 0.130 2.81Trichlorofluoromethane 1 06/21/23 17:38 V34658ENM
5.52 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 06/21/23 17:38 V34658ENM
0.781 J µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 06/21/23 17:38 V34658ENM
<0.224 µg/m3 0.224 1.76Vinyl Acetate 1 06/21/23 17:38 V34658ENM
<0.127 µg/m3 0.127 1.28Vinyl Chloride 1 06/21/23 17:38 V34658ENM
2.27 µg/m3 0.157 2.17o-Xylene 1 06/21/23 17:38 V34658ENM
6.70 µg/m3 0.217 5.65m,p-Xylene 1 06/21/23 17:38 V34658ENM
8.97 µg/m3 0.157 2.17Xylene (Total)1 06/21/23 17:38 V34658
Surrogate: 4-Bromofluorobenzene 95.5 Limits: 70-130%06/21/23 17:381 ENM V34658
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 24 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-18
98655 Matrix:
6/14/2023 7:15
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34643 06/21/23 09:00 V34734 06/20/23 09:00
11.2 µg/m3 0.202 4.75Acetone 1 06/21/23 18:32 V34658ENM
0.769 J
µg/m3 0.073 1.60
Benzene 1 06/21/23 18:32 V34658ENM
<0.147 µg/m3 0.147 10.4Benzyl Chloride 1 06/21/23 18:32 V34658ENM
<0.150 µg/m3 0.150 3.35Bromodichloromethane 1 06/21/23 18:32 V34658ENM
<0.153 µg/m3 0.153 5.17Bromoform 1 06/21/23 18:32 V34658ENM
<0.115 µg/m3 0.115 1.94Bromomethane 1 06/21/23 18:32 V34658ENM
<0.328 µg/m3 0.328 1.111,3-Butadiene 1 06/21/23 18:32 V34658ENM
3.50 J µg/m3 0.060 6.23Carbon Disulfide 1 06/21/23 18:32 V34658ENM
<0.155 µg/m3 0.155 3.15
Carbon Tetrachloride 1 06/21/23 18:32 V34658ENM
<0.107 µg/m3 0.107 2.30Chlorobenzene 1 06/21/23 18:32 V34658ENM
<0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 06/21/23 18:32 V34658ENM
<0.164 µg/m3 0.164 1.32Chloroethane 1 06/21/23 18:32 V34658ENM
22.3 µg/m3 0.086 2.44Chloroform 1 06/21/23 18:32 V34658ENM
<0.067 µg/m3 0.067 1.03Chloromethane 1 06/21/23 18:32 V34658ENM
3.19 J µg/m3 0.161 3.44Cyclohexane 1 06/21/23 18:32 V34658ENM
<0.151 µg/m3 0.151 3.841,2-Dibromoethane 1 06/21/23 18:32 V34658ENM
<0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 06/21/23 18:32 V34658ENM
<0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 06/21/23 18:32 V34658ENM
<0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 06/21/23 18:32 V34658ENM
3.67 µg/m3 0.134 2.47Dichlorodifluoromethane 1 06/21/23 18:32 V34658ENM
<0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 06/21/23 18:32 V34658ENM
<0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 06/21/23 18:32 V34658ENM
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 25 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-18
98655 Matrix:
6/14/2023 7:15
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34643 06/21/23 09:00 V34734 06/20/23 09:00
<0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 06/21/23 18:32 V34658ENM
<0.095 µg/m3 0.095 1.98
cis-1,2-Dichloroethene 1 06/21/23 18:32 V34658ENM
<0.108 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 06/21/23 18:32 V34658ENM
4.38 µg/m3 0.205 2.311,2-Dichloropropane 1 06/21/23 18:32 V34658ENM
<0.622 µg/m3 0.622 3.501,2-Dichlorotetrafluoroethane 1 06/21/23 18:32 V34658ENM
<0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 06/21/23 18:32 V34658ENM
<0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 06/21/23 18:32 V34658ENM
<0.435 µg/m3 0.435 1.801,4-Dioxane 1 06/21/23 18:32 V34658ENM
1.83 µg/m3 0.136 1.80
Ethyl Acetate 1 06/21/23 18:32 V34658ENM
1.77 J µg/m3 0.106 2.17Ethylbenzene 1 06/21/23 18:32 V34658ENM
0.934 J µg/m3 0.128 2.464-Ethyltoluene 1 06/21/23 18:32 V34658ENM
0.712 J µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 06/21/23 18:32 V34658ENM
0.881 J µg/m3 0.143 2.05Heptane 1 06/21/23 18:32 V34658ENM
<0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 06/21/23 18:32 V34658ENM
1.48 J µg/m3 0.047 1.76n-Hexane 1 06/21/23 18:32 V34658ENM
<0.285 µg/m3 0.285 2.052-Hexanone 1 06/21/23 18:32 V34658ENM
27.5 µg/m3 0.139 4.92Isopropyl Alcohol 1 06/21/23 18:32 V34658ENM
1.70 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 06/21/23 18:32 V34658ENM
<0.033 µg/m3 0.033 1.80Methyl tert-butyl ether (MTBE)1 06/21/23 18:32 V34658ENM
0.528 J µg/m3 0.121 2.054-Methyl-2-Pentanone 1 06/21/23 18:32 V34658ENM
1.63 J µg/m3 0.488 1.74Methylene Chloride 1 06/21/23 18:32 V34658ENM
5.34 µg/m3 0.183 2.62Naphthalene 1 06/21/23 18:32 V34658ENM
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 26 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-18
98655 Matrix:
6/14/2023 7:15
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34643 06/21/23 09:00 V34734 06/20/23 09:00
<0.242 µg/m3 0.242 0.860Propene 1 06/21/23 18:32 V34658ENM
3.18 µg/m3 0.124 2.13
Styrene 1 06/21/23 18:32 V34658ENM
<0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 06/21/23 18:32 V34658ENM
1450 µg/m3 3.62 67.8Tetrachloroethene 20 06/20/23 23:42 V34735ENM
1.88 µg/m3 0.107 1.47Tetrahydrofuran 1 06/21/23 18:32 V34658ENM
5.55 µg/m3 0.090 1.88Toluene 1 06/21/23 18:32 V34658ENM
<0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 06/21/23 18:32 V34658ENM
<0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 06/21/23 18:32 V34658ENM
<0.087 µg/m3 0.087 2.73
1,1,2-Trichloroethane 1 06/21/23 18:32 V34658ENM
1.78 J µg/m3 0.199 2.15Trichloroethene 1 06/21/23 18:32 V34658ENM
420 µg/m3 2.60 56.2Trichlorofluoromethane 20 06/20/23 23:42 V34735ENM
5.46 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 06/21/23 18:32 V34658ENM
0.865 J µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 06/21/23 18:32 V34658ENM
1.17 J µg/m3 0.224 1.76Vinyl Acetate 1 06/21/23 18:32 V34658ENM
<0.127 µg/m3 0.127 1.28Vinyl Chloride 1 06/21/23 18:32 V34658ENM
2.39 µg/m3 0.157 2.17o-Xylene 1 06/21/23 18:32 V34658ENM
7.44 µg/m3 0.217 5.65m,p-Xylene 1 06/21/23 18:32 V34658ENM
9.83 µg/m3 0.157 2.17Xylene (Total)1 06/21/23 18:32 V34658
Surrogate: 4-Bromofluorobenzene 97.2 Limits: 70-130%06/21/23 18:321 ENM V34658
Surrogate: 4-Bromofluorobenzene 94.7 Limits: 70-130%06/20/23 23:4220 ENM V34735
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 27 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-16
98656 Matrix:
6/14/2023 8:19
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34643 06/21/23 09:00
10.1 µg/m3 0.202 4.75Acetone 1 06/21/23 19:26 V34658ENM
0.370 J
µg/m3 0.073 1.60
Benzene 1 06/21/23 19:26 V34658ENM
<0.147 µg/m3 0.147 10.4Benzyl Chloride 1 06/21/23 19:26 V34658ENM
<0.150 µg/m3 0.150 3.35Bromodichloromethane 1 06/21/23 19:26 V34658ENM
<0.153 µg/m3 0.153 5.17Bromoform 1 06/21/23 19:26 V34658ENM
<0.115 µg/m3 0.115 1.94Bromomethane 1 06/21/23 19:26 V34658ENM
<0.328 µg/m3 0.328 1.111,3-Butadiene 1 06/21/23 19:26 V34658ENM
1.36 J µg/m3 0.060 6.23Carbon Disulfide 1 06/21/23 19:26 V34658ENM
<0.155 µg/m3 0.155 3.15
Carbon Tetrachloride 1 06/21/23 19:26 V34658ENM
<0.107 µg/m3 0.107 2.30Chlorobenzene 1 06/21/23 19:26 V34658ENM
<0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 06/21/23 19:26 V34658ENM
<0.164 µg/m3 0.164 1.32Chloroethane 1 06/21/23 19:26 V34658ENM
8.04 µg/m3 0.086 2.44Chloroform 1 06/21/23 19:26 V34658ENM
<0.067 µg/m3 0.067 1.03Chloromethane 1 06/21/23 19:26 V34658ENM
<0.161 µg/m3 0.161 3.44Cyclohexane 1 06/21/23 19:26 V34658ENM
<0.151 µg/m3 0.151 3.841,2-Dibromoethane 1 06/21/23 19:26 V34658ENM
<0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 06/21/23 19:26 V34658ENM
<0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 06/21/23 19:26 V34658ENM
<0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 06/21/23 19:26 V34658ENM
3.19 µg/m3 0.134 2.47Dichlorodifluoromethane 1 06/21/23 19:26 V34658ENM
<0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 06/21/23 19:26 V34658ENM
<0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 06/21/23 19:26 V34658ENM
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 28 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-16
98656 Matrix:
6/14/2023 8:19
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34643 06/21/23 09:00
<0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 06/21/23 19:26 V34658ENM
<0.095 µg/m3 0.095 1.98
cis-1,2-Dichloroethene 1 06/21/23 19:26 V34658ENM
3.65 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 06/21/23 19:26 V34658ENM
2.01 J µg/m3 0.205 2.311,2-Dichloropropane 1 06/21/23 19:26 V34658ENM
<0.622 µg/m3 0.622 3.501,2-Dichlorotetrafluoroethane 1 06/21/23 19:26 V34658ENM
<0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 06/21/23 19:26 V34658ENM
<0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 06/21/23 19:26 V34658ENM
<0.435 µg/m3 0.435 1.801,4-Dioxane 1 06/21/23 19:26 V34658ENM
2.32 µg/m3 0.136 1.80
Ethyl Acetate 1 06/21/23 19:26 V34658ENM
1.46 J µg/m3 0.106 2.17Ethylbenzene 1 06/21/23 19:26 V34658ENM
0.840 J µg/m3 0.128 2.464-Ethyltoluene 1 06/21/23 19:26 V34658ENM
0.659 J µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 06/21/23 19:26 V34658ENM
0.782 J µg/m3 0.143 2.05Heptane 1 06/21/23 19:26 V34658ENM
<0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 06/21/23 19:26 V34658ENM
0.838 J µg/m3 0.047 1.76n-Hexane 1 06/21/23 19:26 V34658ENM
<0.285 µg/m3 0.285 2.052-Hexanone 1 06/21/23 19:26 V34658ENM
39.0 µg/m3 0.139 4.92Isopropyl Alcohol 1 06/21/23 19:26 V34658ENM
1.52 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 06/21/23 19:26 V34658ENM
<0.033 µg/m3 0.033 1.80Methyl tert-butyl ether (MTBE)1 06/21/23 19:26 V34658ENM
<0.121 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 06/21/23 19:26 V34658ENM
1.89 µg/m3 0.488 1.74Methylene Chloride 1 06/21/23 19:26 V34658ENM
5.27 µg/m3 0.183 2.62Naphthalene 1 06/21/23 19:26 V34658ENM
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 29 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-16
98656 Matrix:
6/14/2023 8:19
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34643 06/21/23 09:00
<0.242 µg/m3 0.242 0.860Propene 1 06/21/23 19:26 V34658ENM
3.14 µg/m3 0.124 2.13
Styrene 1 06/21/23 19:26 V34658ENM
<0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 06/21/23 19:26 V34658ENM
31.3 µg/m3 0.181 3.39Tetrachloroethene 1 06/21/23 19:26 V34658ENM
<0.107 µg/m3 0.107 1.47Tetrahydrofuran 1 06/21/23 19:26 V34658ENM
4.54 µg/m3 0.090 1.88Toluene 1 06/21/23 19:26 V34658ENM
<0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 06/21/23 19:26 V34658ENM
<0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 06/21/23 19:26 V34658ENM
<0.087 µg/m3 0.087 2.73
1,1,2-Trichloroethane 1 06/21/23 19:26 V34658ENM
<0.199 µg/m3 0.199 2.15Trichloroethene 1 06/21/23 19:26 V34658ENM
70.6 µg/m3 0.130 2.81Trichlorofluoromethane 1 06/21/23 19:26 V34658ENM
5.35 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 06/21/23 19:26 V34658ENM
0.737 J µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 06/21/23 19:26 V34658ENM
<0.224 µg/m3 0.224 1.76Vinyl Acetate 1 06/21/23 19:26 V34658ENM
<0.127 µg/m3 0.127 1.28Vinyl Chloride 1 06/21/23 19:26 V34658ENM
2.09 J µg/m3 0.157 2.17o-Xylene 1 06/21/23 19:26 V34658ENM
6.44 µg/m3 0.217 5.65m,p-Xylene 1 06/21/23 19:26 V34658ENM
8.53 J µg/m3 0.157 2.17Xylene (Total)1 06/21/23 19:26 V34658
Surrogate: 4-Bromofluorobenzene 98.3 Limits: 70-130%06/21/23 19:261 ENM V34658
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 30 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-5
98657 Matrix:
6/14/2023 13:29
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34643 06/21/23 09:00 V34734 06/20/23 09:00
2350 µg/m3 4.04 95.0Acetone 20 06/21/23 00:56 V34735ENM
1.53 J
µg/m3 0.073 1.60
Benzene 1 06/21/23 20:20 V34658ENM
<0.147 µg/m3 0.147 10.4Benzyl Chloride 1 06/21/23 20:20 V34658ENM
<0.150 µg/m3 0.150 3.35Bromodichloromethane 1 06/21/23 20:20 V34658ENM
<0.153 µg/m3 0.153 5.17Bromoform 1 06/21/23 20:20 V34658ENM
<0.115 µg/m3 0.115 1.94Bromomethane 1 06/21/23 20:20 V34658ENM
<0.328 µg/m3 0.328 1.111,3-Butadiene 1 06/21/23 20:20 V34658ENM
4.11 J µg/m3 0.060 6.23Carbon Disulfide 1 06/21/23 20:20 V34658ENM
<0.155 µg/m3 0.155 3.15
Carbon Tetrachloride 1 06/21/23 20:20 V34658ENM
<0.107 µg/m3 0.107 2.30Chlorobenzene 1 06/21/23 20:20 V34658ENM
<0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 06/21/23 20:20 V34658ENM
<0.164 µg/m3 0.164 1.32Chloroethane 1 06/21/23 20:20 V34658ENM
72.8 µg/m3 0.086 2.44Chloroform 1 06/21/23 20:20 V34658ENM
<0.067 µg/m3 0.067 1.03Chloromethane 1 06/21/23 20:20 V34658ENM
<0.161 µg/m3 0.161 3.44Cyclohexane 1 06/21/23 20:20 V34658ENM
<0.151 µg/m3 0.151 3.841,2-Dibromoethane 1 06/21/23 20:20 V34658ENM
<0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 06/21/23 20:20 V34658ENM
0.631 J µg/m3 0.174 12.01,3-Dichlorobenzene 1 06/21/23 20:20 V34658ENM
<0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 06/21/23 20:20 V34658ENM
3.32 µg/m3 0.134 2.47Dichlorodifluoromethane 1 06/21/23 20:20 V34658ENM
<0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 06/21/23 20:20 V34658ENM
0.918 J µg/m3 0.129 2.021,2-Dichloroethane 1 06/21/23 20:20 V34658ENM
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 31 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-5
98657 Matrix:
6/14/2023 13:29
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34643 06/21/23 09:00 V34734 06/20/23 09:00
<0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 06/21/23 20:20 V34658ENM
<0.095 µg/m3 0.095 1.98
cis-1,2-Dichloroethene 1 06/21/23 20:20 V34658ENM
<0.108 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 06/21/23 20:20 V34658ENM
38.5 µg/m3 0.205 2.311,2-Dichloropropane 1 06/21/23 20:20 V34658ENM
<0.622 µg/m3 0.622 3.501,2-Dichlorotetrafluoroethane 1 06/21/23 20:20 V34658ENM
<0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 06/21/23 20:20 V34658ENM
<0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 06/21/23 20:20 V34658ENM
<0.435 µg/m3 0.435 1.801,4-Dioxane 1 06/21/23 20:20 V34658ENM
2.33 µg/m3 0.136 1.80
Ethyl Acetate 1 06/21/23 20:20 V34658ENM
1.60 J µg/m3 0.106 2.17Ethylbenzene 1 06/21/23 20:20 V34658ENM
0.934 J µg/m3 0.128 2.464-Ethyltoluene 1 06/21/23 20:20 V34658ENM
0.728 J µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 06/21/23 20:20 V34658ENM
14.0 µg/m3 0.143 2.05Heptane 1 06/21/23 20:20 V34658ENM
<0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 06/21/23 20:20 V34658ENM
1.92 µg/m3 0.047 1.76n-Hexane 1 06/21/23 20:20 V34658ENM
3.82 µg/m3 0.285 2.052-Hexanone 1 06/21/23 20:20 V34658ENM
67.6 µg/m3 0.139 4.92Isopropyl Alcohol 1 06/21/23 20:20 V34658ENM
19.3 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 06/21/23 20:20 V34658ENM
6.58 µg/m3 0.033 1.80Methyl tert-butyl ether (MTBE)1 06/21/23 20:20 V34658ENM
3.96 µg/m3 0.121 2.054-Methyl-2-Pentanone 1 06/21/23 20:20 V34658ENM
4.93 µg/m3 0.488 1.74Methylene Chloride 1 06/21/23 20:20 V34658ENM
5.37 µg/m3 0.183 2.62Naphthalene 1 06/21/23 20:20 V34658ENM
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 32 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-5
98657 Matrix:
6/14/2023 13:29
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34643 06/21/23 09:00 V34734 06/20/23 09:00
49.0 µg/m3 0.242 0.860Propene 1 06/21/23 20:20 V34658ENM
3.45 µg/m3 0.124 2.13
Styrene 1 06/21/23 20:20 V34658ENM
<0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 06/21/23 20:20 V34658ENM
106 µg/m3 0.181 3.39Tetrachloroethene 1 06/21/23 20:20 V34658ENM
2.53 µg/m3 0.107 1.47Tetrahydrofuran 1 06/21/23 20:20 V34658ENM
14.1 µg/m3 0.090 1.88Toluene 1 06/21/23 20:20 V34658ENM
<0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 06/21/23 20:20 V34658ENM
0.785 J µg/m3 0.144 2.731,1,1-Trichloroethane 1 06/21/23 20:20 V34658ENM
<0.087 µg/m3 0.087 2.73
1,1,2-Trichloroethane 1 06/21/23 20:20 V34658ENM
1.02 J µg/m3 0.199 2.15Trichloroethene 1 06/21/23 20:20 V34658ENM
1830 µg/m3 2.60 56.2Trichlorofluoromethane 20 06/21/23 00:56 V34735ENM
5.76 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 06/21/23 20:20 V34658ENM
0.983 J µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 06/21/23 20:20 V34658ENM
<0.224 µg/m3 0.224 1.76Vinyl Acetate 1 06/21/23 20:20 V34658ENM
<0.127 µg/m3 0.127 1.28Vinyl Chloride 1 06/21/23 20:20 V34658ENM
2.54 µg/m3 0.157 2.17o-Xylene 1 06/21/23 20:20 V34658ENM
7.02 µg/m3 0.217 5.65m,p-Xylene 1 06/21/23 20:20 V34658ENM
9.56 µg/m3 0.157 2.17Xylene (Total)1 06/21/23 20:20 V34658
Surrogate: 4-Bromofluorobenzene 96.1 Limits: 70-130%06/21/23 20:201 ENM V34658
Surrogate: 4-Bromofluorobenzene 96.6 Limits: 70-130%06/21/23 00:5620 ENM V34735
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 33 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-9
98658 Matrix:
6/14/2023 12:58
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34643 06/21/23 09:00 V34734 06/20/23 09:00
47.2 µg/m3 0.202 4.75Acetone 1 06/21/23 21:10 V34658ENM
1.14 J
µg/m3 0.073 1.60
Benzene 1 06/21/23 21:10 V34658ENM
<0.147 µg/m3 0.147 10.4Benzyl Chloride 1 06/21/23 21:10 V34658ENM
<0.150 µg/m3 0.150 3.35Bromodichloromethane 1 06/21/23 21:10 V34658ENM
<0.153 µg/m3 0.153 5.17Bromoform 1 06/21/23 21:10 V34658ENM
<0.115 µg/m3 0.115 1.94Bromomethane 1 06/21/23 21:10 V34658ENM
<0.328 µg/m3 0.328 1.111,3-Butadiene 1 06/21/23 21:10 V34658ENM
4.10 J µg/m3 0.060 6.23Carbon Disulfide 1 06/21/23 21:10 V34658ENM
<0.155 µg/m3 0.155 3.15
Carbon Tetrachloride 1 06/21/23 21:10 V34658ENM
<0.107 µg/m3 0.107 2.30Chlorobenzene 1 06/21/23 21:10 V34658ENM
<0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 06/21/23 21:10 V34658ENM
<0.164 µg/m3 0.164 1.32Chloroethane 1 06/21/23 21:10 V34658ENM
13.0 µg/m3 0.086 2.44Chloroform 1 06/21/23 21:10 V34658ENM
<0.067 µg/m3 0.067 1.03Chloromethane 1 06/21/23 21:10 V34658ENM
<0.161 µg/m3 0.161 3.44Cyclohexane 1 06/21/23 21:10 V34658ENM
<0.151 µg/m3 0.151 3.841,2-Dibromoethane 1 06/21/23 21:10 V34658ENM
<0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 06/21/23 21:10 V34658ENM
<0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 06/21/23 21:10 V34658ENM
<0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 06/21/23 21:10 V34658ENM
3.18 µg/m3 0.134 2.47Dichlorodifluoromethane 1 06/21/23 21:10 V34658ENM
<0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 06/21/23 21:10 V34658ENM
<0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 06/21/23 21:10 V34658ENM
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 34 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-9
98658 Matrix:
6/14/2023 12:58
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34643 06/21/23 09:00 V34734 06/20/23 09:00
<0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 06/21/23 21:10 V34658ENM
<0.095 µg/m3 0.095 1.98
cis-1,2-Dichloroethene 1 06/21/23 21:10 V34658ENM
<0.108 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 06/21/23 21:10 V34658ENM
8.00 µg/m3 0.205 2.311,2-Dichloropropane 1 06/21/23 21:10 V34658ENM
<0.622 µg/m3 0.622 3.501,2-Dichlorotetrafluoroethane 1 06/21/23 21:10 V34658ENM
<0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 06/21/23 21:10 V34658ENM
<0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 06/21/23 21:10 V34658ENM
<0.435 µg/m3 0.435 1.801,4-Dioxane 1 06/21/23 21:10 V34658ENM
1.45 J
µg/m3 0.136 1.80
Ethyl Acetate 1 06/21/23 21:10 V34658ENM
1.40 J µg/m3 0.106 2.17Ethylbenzene 1 06/21/23 21:10 V34658ENM
1.27 J µg/m3 0.128 2.464-Ethyltoluene 1 06/21/23 21:10 V34658ENM
0.781 J µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 06/21/23 21:10 V34658ENM
25.7 µg/m3 0.143 2.05Heptane 1 06/21/23 21:10 V34658ENM
<0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 06/21/23 21:10 V34658ENM
2.83 µg/m3 0.047 1.76n-Hexane 1 06/21/23 21:10 V34658ENM
<0.285 µg/m3 0.285 2.052-Hexanone 1 06/21/23 21:10 V34658ENM
27.6 µg/m3 0.139 4.92Isopropyl Alcohol 1 06/21/23 21:10 V34658ENM
3.02 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 06/21/23 21:10 V34658ENM
<0.033 µg/m3 0.033 1.80Methyl tert-butyl ether (MTBE)1 06/21/23 21:10 V34658ENM
0.823 J µg/m3 0.121 2.054-Methyl-2-Pentanone 1 06/21/23 21:10 V34658ENM
<0.488 µg/m3 0.488 1.74Methylene Chloride 1 06/21/23 21:10 V34658ENM
5.44 µg/m3 0.183 2.62Naphthalene 1 06/21/23 21:10 V34658ENM
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 35 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-9
98658 Matrix:
6/14/2023 12:58
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34643 06/21/23 09:00 V34734 06/20/23 09:00
19.4 µg/m3 0.242 0.860Propene 1 06/21/23 21:10 V34658ENM
4.01 µg/m3 0.124 2.13
Styrene 1 06/21/23 21:10 V34658ENM
<0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 06/21/23 21:10 V34658ENM
24.6 µg/m3 0.181 3.39Tetrachloroethene 1 06/21/23 21:10 V34658ENM
4.62 µg/m3 0.107 1.47Tetrahydrofuran 1 06/21/23 21:10 V34658ENM
16.3 µg/m3 0.090 1.88Toluene 1 06/21/23 21:10 V34658ENM
<0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 06/21/23 21:10 V34658ENM
<0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 06/21/23 21:10 V34658ENM
<0.087 µg/m3 0.087 2.73
1,1,2-Trichloroethane 1 06/21/23 21:10 V34658ENM
<0.199 µg/m3 0.199 2.15Trichloroethene 1 06/21/23 21:10 V34658ENM
623 µg/m3 2.60 56.2Trichlorofluoromethane 20 06/21/23 01:33 V34735ENM
6.19 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 06/21/23 21:10 V34658ENM
1.08 J µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 06/21/23 21:10 V34658ENM
<0.224 µg/m3 0.224 1.76Vinyl Acetate 1 06/21/23 21:10 V34658ENM
<0.127 µg/m3 0.127 1.28Vinyl Chloride 1 06/21/23 21:10 V34658ENM
2.04 J µg/m3 0.157 2.17o-Xylene 1 06/21/23 21:10 V34658ENM
6.64 µg/m3 0.217 5.65m,p-Xylene 1 06/21/23 21:10 V34658ENM
8.68 J µg/m3 0.157 2.17Xylene (Total)1 06/21/23 21:10 V34658
Surrogate: 4-Bromofluorobenzene 100 Limits: 70-130%06/21/23 21:101 ENM V34658
Surrogate: 4-Bromofluorobenzene 95.5 Limits: 70-130%06/21/23 01:3320 ENM V34735
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 36 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-Duplicate
98659 Matrix:
6/14/2023 12:58
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34643 06/21/23 09:00 V34734 06/20/23 09:00
333 µg/m3 4.04 95.0Acetone 20 06/21/23 02:10 V34735ENM
0.511 J
µg/m3 0.073 1.60
Benzene 1 06/21/23 22:03 V34658ENM
<0.147 µg/m3 0.147 10.4Benzyl Chloride 1 06/21/23 22:03 V34658ENM
<0.150 µg/m3 0.150 3.35Bromodichloromethane 1 06/21/23 22:03 V34658ENM
<0.153 µg/m3 0.153 5.17Bromoform 1 06/21/23 22:03 V34658ENM
<0.115 µg/m3 0.115 1.94Bromomethane 1 06/21/23 22:03 V34658ENM
<0.328 µg/m3 0.328 1.111,3-Butadiene 1 06/21/23 22:03 V34658ENM
4.35 J µg/m3 0.060 6.23Carbon Disulfide 1 06/21/23 22:03 V34658ENM
<0.155 µg/m3 0.155 3.15
Carbon Tetrachloride 1 06/21/23 22:03 V34658ENM
<0.107 µg/m3 0.107 2.30Chlorobenzene 1 06/21/23 22:03 V34658ENM
<0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 06/21/23 22:03 V34658ENM
<0.164 µg/m3 0.164 1.32Chloroethane 1 06/21/23 22:03 V34658ENM
14.4 µg/m3 0.086 2.44Chloroform 1 06/21/23 22:03 V34658ENM
<0.067 µg/m3 0.067 1.03Chloromethane 1 06/21/23 22:03 V34658ENM
<0.161 µg/m3 0.161 3.44Cyclohexane 1 06/21/23 22:03 V34658ENM
<0.151 µg/m3 0.151 3.841,2-Dibromoethane 1 06/21/23 22:03 V34658ENM
<0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 06/21/23 22:03 V34658ENM
<0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 06/21/23 22:03 V34658ENM
<0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 06/21/23 22:03 V34658ENM
3.11 µg/m3 0.134 2.47Dichlorodifluoromethane 1 06/21/23 22:03 V34658ENM
<0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 06/21/23 22:03 V34658ENM
<0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 06/21/23 22:03 V34658ENM
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 37 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-Duplicate
98659 Matrix:
6/14/2023 12:58
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34643 06/21/23 09:00 V34734 06/20/23 09:00
<0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 06/21/23 22:03 V34658ENM
<0.095 µg/m3 0.095 1.98
cis-1,2-Dichloroethene 1 06/21/23 22:03 V34658ENM
<0.108 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 06/21/23 22:03 V34658ENM
<0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 06/21/23 22:03 V34658ENM
<0.622 µg/m3 0.622 3.501,2-Dichlorotetrafluoroethane 1 06/21/23 22:03 V34658ENM
<0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 06/21/23 22:03 V34658ENM
<0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 06/21/23 22:03 V34658ENM
<0.435 µg/m3 0.435 1.801,4-Dioxane 1 06/21/23 22:03 V34658ENM
1.72 J
µg/m3 0.136 1.80
Ethyl Acetate 1 06/21/23 22:03 V34658ENM
1.11 J µg/m3 0.106 2.17Ethylbenzene 1 06/21/23 22:03 V34658ENM
0.727 J µg/m3 0.128 2.464-Ethyltoluene 1 06/21/23 22:03 V34658ENM
0.620 J µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 06/21/23 22:03 V34658ENM
196 µg/m3 0.143 2.05Heptane 1 06/21/23 22:03 V34658ENM
<0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 06/21/23 22:03 V34658ENM
2.34 µg/m3 0.047 1.76n-Hexane 1 06/21/23 22:03 V34658ENM
<0.285 µg/m3 0.285 2.052-Hexanone 1 06/21/23 22:03 V34658ENM
34.5 µg/m3 0.139 4.92Isopropyl Alcohol 1 06/21/23 22:03 V34658ENM
2.24 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 06/21/23 22:03 V34658ENM
<0.033 µg/m3 0.033 1.80Methyl tert-butyl ether (MTBE)1 06/21/23 22:03 V34658ENM
1.12 J µg/m3 0.121 2.054-Methyl-2-Pentanone 1 06/21/23 22:03 V34658ENM
1.59 J µg/m3 0.488 1.74Methylene Chloride 1 06/21/23 22:03 V34658ENM
5.28 µg/m3 0.183 2.62Naphthalene 1 06/21/23 22:03 V34658ENM
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 38 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-Duplicate
98659 Matrix:
6/14/2023 12:58
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34643 06/21/23 09:00 V34734 06/20/23 09:00
<0.242 µg/m3 0.242 0.860Propene 1 06/21/23 22:03 V34658ENM
<0.124 µg/m3 0.124 2.13
Styrene 1 06/21/23 22:03 V34658ENM
<0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 06/21/23 22:03 V34658ENM
32.3 µg/m3 0.181 3.39Tetrachloroethene 1 06/21/23 22:03 V34658ENM
1.88 µg/m3 0.107 1.47Tetrahydrofuran 1 06/21/23 22:03 V34658ENM
3.79 µg/m3 0.090 1.88Toluene 1 06/21/23 22:03 V34658ENM
<0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 06/21/23 22:03 V34658ENM
<0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 06/21/23 22:03 V34658ENM
<0.087 µg/m3 0.087 2.73
1,1,2-Trichloroethane 1 06/21/23 22:03 V34658ENM
<0.199 µg/m3 0.199 2.15Trichloroethene 1 06/21/23 22:03 V34658ENM
67.8 µg/m3 0.130 2.81Trichlorofluoromethane 1 06/21/23 22:03 V34658ENM
4.87 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 06/21/23 22:03 V34658ENM
0.658 J µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 06/21/23 22:03 V34658ENM
1.21 J µg/m3 0.224 1.76Vinyl Acetate 1 06/21/23 22:03 V34658ENM
<0.127 µg/m3 0.127 1.28Vinyl Chloride 1 06/21/23 22:03 V34658ENM
1.72 J µg/m3 0.157 2.17o-Xylene 1 06/21/23 22:03 V34658ENM
5.40 J µg/m3 0.217 5.65m,p-Xylene 1 06/21/23 22:03 V34658ENM
7.12 J µg/m3 0.157 2.17Xylene (Total)1 06/21/23 22:03 V34658
Surrogate: 4-Bromofluorobenzene 93.3 Limits: 70-130%06/21/23 22:031 ENM V34658
Surrogate: 4-Bromofluorobenzene 96.6 Limits: 70-130%06/21/23 02:1020 ENM V34735
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 39 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-10
98660 Matrix:
6/14/2023 12:08
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34643 06/21/23 09:00 V34734 06/20/23 09:00
54.6 µg/m3 0.202 4.75Acetone 1 06/21/23 22:59 V34658ENM
0.565 J
µg/m3 0.073 1.60
Benzene 1 06/21/23 22:59 V34658ENM
<0.147 µg/m3 0.147 10.4Benzyl Chloride 1 06/21/23 22:59 V34658ENM
<0.150 µg/m3 0.150 3.35Bromodichloromethane 1 06/21/23 22:59 V34658ENM
<0.153 µg/m3 0.153 5.17Bromoform 1 06/21/23 22:59 V34658ENM
<0.115 µg/m3 0.115 1.94Bromomethane 1 06/21/23 22:59 V34658ENM
<0.328 µg/m3 0.328 1.111,3-Butadiene 1 06/21/23 22:59 V34658ENM
2.61 J µg/m3 0.060 6.23Carbon Disulfide 1 06/21/23 22:59 V34658ENM
<0.155 µg/m3 0.155 3.15
Carbon Tetrachloride 1 06/21/23 22:59 V34658ENM
<0.107 µg/m3 0.107 2.30Chlorobenzene 1 06/21/23 22:59 V34658ENM
<0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 06/21/23 22:59 V34658ENM
<0.164 µg/m3 0.164 1.32Chloroethane 1 06/21/23 22:59 V34658ENM
36.9 µg/m3 0.086 2.44Chloroform 1 06/21/23 22:59 V34658ENM
<0.067 µg/m3 0.067 1.03Chloromethane 1 06/21/23 22:59 V34658ENM
<0.161 µg/m3 0.161 3.44Cyclohexane 1 06/21/23 22:59 V34658ENM
<0.151 µg/m3 0.151 3.841,2-Dibromoethane 1 06/21/23 22:59 V34658ENM
<0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 06/21/23 22:59 V34658ENM
<0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 06/21/23 22:59 V34658ENM
<0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 06/21/23 22:59 V34658ENM
3.38 µg/m3 0.134 2.47Dichlorodifluoromethane 1 06/21/23 22:59 V34658ENM
<0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 06/21/23 22:59 V34658ENM
<0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 06/21/23 22:59 V34658ENM
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 40 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-10
98660 Matrix:
6/14/2023 12:08
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34643 06/21/23 09:00 V34734 06/20/23 09:00
<0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 06/21/23 22:59 V34658ENM
<0.095 µg/m3 0.095 1.98
cis-1,2-Dichloroethene 1 06/21/23 22:59 V34658ENM
<0.108 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 06/21/23 22:59 V34658ENM
<0.205 µg/m3 0.205 2.311,2-Dichloropropane 1 06/21/23 22:59 V34658ENM
<0.622 µg/m3 0.622 3.501,2-Dichlorotetrafluoroethane 1 06/21/23 22:59 V34658ENM
<0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 06/21/23 22:59 V34658ENM
<0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 06/21/23 22:59 V34658ENM
<0.435 µg/m3 0.435 1.801,4-Dioxane 1 06/21/23 22:59 V34658ENM
1.65 J
µg/m3 0.136 1.80
Ethyl Acetate 1 06/21/23 22:59 V34658ENM
1.04 J µg/m3 0.106 2.17Ethylbenzene 1 06/21/23 22:59 V34658ENM
0.634 J µg/m3 0.128 2.464-Ethyltoluene 1 06/21/23 22:59 V34658ENM
0.758 J µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 06/21/23 22:59 V34658ENM
35.8 µg/m3 0.143 2.05Heptane 1 06/21/23 22:59 V34658ENM
<0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 06/21/23 22:59 V34658ENM
7.23 µg/m3 0.047 1.76n-Hexane 1 06/21/23 22:59 V34658ENM
<0.285 µg/m3 0.285 2.052-Hexanone 1 06/21/23 22:59 V34658ENM
41.3 µg/m3 0.139 4.92Isopropyl Alcohol 1 06/21/23 22:59 V34658ENM
6.66 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 06/21/23 22:59 V34658ENM
<0.033 µg/m3 0.033 1.80Methyl tert-butyl ether (MTBE)1 06/21/23 22:59 V34658ENM
0.651 J µg/m3 0.121 2.054-Methyl-2-Pentanone 1 06/21/23 22:59 V34658ENM
1.48 J µg/m3 0.488 1.74Methylene Chloride 1 06/21/23 22:59 V34658ENM
5.35 µg/m3 0.183 2.62Naphthalene 1 06/21/23 22:59 V34658ENM
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 41 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-10
98660 Matrix:
6/14/2023 12:08
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34643 06/21/23 09:00 V34734 06/20/23 09:00
<0.242 µg/m3 0.242 0.860Propene 1 06/21/23 22:59 V34658ENM
<0.124 µg/m3 0.124 2.13
Styrene 1 06/21/23 22:59 V34658ENM
<0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 06/21/23 22:59 V34658ENM
362 µg/m3 3.62 67.8Tetrachloroethene 20 06/21/23 02:47 V34735ENM
25.5 µg/m3 0.107 1.47Tetrahydrofuran 1 06/21/23 22:59 V34658ENM
26.0 µg/m3 0.090 1.88Toluene 1 06/21/23 22:59 V34658ENM
<0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 06/21/23 22:59 V34658ENM
<0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 06/21/23 22:59 V34658ENM
<0.087 µg/m3 0.087 2.73
1,1,2-Trichloroethane 1 06/21/23 22:59 V34658ENM
0.666 J µg/m3 0.199 2.15Trichloroethene 1 06/21/23 22:59 V34658ENM
399 µg/m3 2.60 56.2Trichlorofluoromethane 20 06/21/23 02:47 V34735ENM
4.83 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 06/21/23 22:59 V34658ENM
0.604 J µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 06/21/23 22:59 V34658ENM
<0.224 µg/m3 0.224 1.76Vinyl Acetate 1 06/21/23 22:59 V34658ENM
<0.127 µg/m3 0.127 1.28Vinyl Chloride 1 06/21/23 22:59 V34658ENM
1.51 J µg/m3 0.157 2.17o-Xylene 1 06/21/23 22:59 V34658ENM
4.92 J µg/m3 0.217 5.65m,p-Xylene 1 06/21/23 22:59 V34658ENM
6.43 J µg/m3 0.157 2.17Xylene (Total)1 06/21/23 22:59 V34658
Surrogate: 4-Bromofluorobenzene 89.7 Limits: 70-130%06/21/23 22:591 ENM V34658
Surrogate: 4-Bromofluorobenzene 96.9 Limits: 70-130%06/21/23 02:4720 ENM V34735
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 42 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-11
98661 Matrix:
6/14/2023 10:59
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34643 06/21/23 09:00 V34734 06/20/23 09:00
107 µg/m3 0.202 4.75Acetone 1 06/21/23 23:52 V34658ENM
11.9 µg/m3 0.073 1.60
Benzene 1 06/21/23 23:52 V34658ENM
<0.147 µg/m3 0.147 10.4Benzyl Chloride 1 06/21/23 23:52 V34658ENM
<0.150 µg/m3 0.150 3.35Bromodichloromethane 1 06/21/23 23:52 V34658ENM
<0.153 µg/m3 0.153 5.17Bromoform 1 06/21/23 23:52 V34658ENM
<0.115 µg/m3 0.115 1.94Bromomethane 1 06/21/23 23:52 V34658ENM
<0.328 µg/m3 0.328 1.111,3-Butadiene 1 06/21/23 23:52 V34658ENM
10.3 µg/m3 0.060 6.23Carbon Disulfide 1 06/21/23 23:52 V34658ENM
0.949 J
µg/m3 0.155 3.15
Carbon Tetrachloride 1 06/21/23 23:52 V34658ENM
<0.107 µg/m3 0.107 2.30Chlorobenzene 1 06/21/23 23:52 V34658ENM
<0.208 µg/m3 0.208 4.26Chlorodibromomethane 1 06/21/23 23:52 V34658ENM
<0.164 µg/m3 0.164 1.32Chloroethane 1 06/21/23 23:52 V34658ENM
352 µg/m3 1.73 48.8Chloroform 20 06/21/23 03:24 V34735ENM
3.23 µg/m3 0.067 1.03Chloromethane 1 06/21/23 23:52 V34658ENM
<0.161 µg/m3 0.161 3.44Cyclohexane 1 06/21/23 23:52 V34658ENM
<0.151 µg/m3 0.151 3.841,2-Dibromoethane 1 06/21/23 23:52 V34658ENM
<0.096 µg/m3 0.096 3.011,2-Dichlorobenzene 1 06/21/23 23:52 V34658ENM
<0.174 µg/m3 0.174 12.01,3-Dichlorobenzene 1 06/21/23 23:52 V34658ENM
<0.186 µg/m3 0.186 3.011,4-Dichlorobenzene 1 06/21/23 23:52 V34658ENM
3.22 µg/m3 0.134 2.47Dichlorodifluoromethane 1 06/21/23 23:52 V34658ENM
<0.101 µg/m3 0.101 2.021,1-Dichloroethane 1 06/21/23 23:52 V34658ENM
<0.129 µg/m3 0.129 2.021,2-Dichloroethane 1 06/21/23 23:52 V34658ENM
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 43 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-11
98661 Matrix:
6/14/2023 10:59
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34643 06/21/23 09:00 V34734 06/20/23 09:00
<0.107 µg/m3 0.107 1.981,1-Dichloroethene 1 06/21/23 23:52 V34658ENM
<0.095 µg/m3 0.095 1.98
cis-1,2-Dichloroethene 1 06/21/23 23:52 V34658ENM
<0.108 µg/m3 0.108 1.98trans-1,2-Dichloroethene 1 06/21/23 23:52 V34658ENM
63.6 µg/m3 0.205 2.311,2-Dichloropropane 1 06/21/23 23:52 V34658ENM
<0.622 µg/m3 0.622 3.501,2-Dichlorotetrafluoroethane 1 06/21/23 23:52 V34658ENM
<0.178 µg/m3 0.178 2.27cis-1,3-Dichloropropene 1 06/21/23 23:52 V34658ENM
<0.178 µg/m3 0.178 2.27trans-1,3-Dichloropropene 1 06/21/23 23:52 V34658ENM
<0.435 µg/m3 0.435 1.801,4-Dioxane 1 06/21/23 23:52 V34658ENM
2.06 µg/m3 0.136 1.80
Ethyl Acetate 1 06/21/23 23:52 V34658ENM
1.87 J µg/m3 0.106 2.17Ethylbenzene 1 06/21/23 23:52 V34658ENM
0.830 J µg/m3 0.128 2.464-Ethyltoluene 1 06/21/23 23:52 V34658ENM
0.620 J µg/m3 0.561 3.831,1,2-Trichloro-1,2,2-trifluoroethane 1 06/21/23 23:52 V34658ENM
89.2 µg/m3 0.143 2.05Heptane 1 06/21/23 23:52 V34658ENM
<0.330 µg/m3 0.330 5.33Hexachlorobutadiene 1 06/21/23 23:52 V34658ENM
3.37 µg/m3 0.047 1.76n-Hexane 1 06/21/23 23:52 V34658ENM
<0.285 µg/m3 0.285 2.052-Hexanone 1 06/21/23 23:52 V34658ENM
12.7 µg/m3 0.139 4.92Isopropyl Alcohol 1 06/21/23 23:52 V34658ENM
7.35 µg/m3 0.224 1.47Methyl Ethyl Ketone (MEK)1 06/21/23 23:52 V34658ENM
8.25 µg/m3 0.033 1.80Methyl tert-butyl ether (MTBE)1 06/21/23 23:52 V34658ENM
1.23 J µg/m3 0.121 2.054-Methyl-2-Pentanone 1 06/21/23 23:52 V34658ENM
4.53 µg/m3 0.488 1.74Methylene Chloride 1 06/21/23 23:52 V34658ENM
5.21 µg/m3 0.183 2.62Naphthalene 1 06/21/23 23:52 V34658ENM
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 44 of 62
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27610
23-167-0022
01139
Mid-Atlantic Associates, Inc. - Raleigh
409 Rogers View Court
Nolen Barefoot
Raleigh
Angela D Overcash
Senior Project Manager
Received : 06/16/2023
North Hills
Report Date : 06/27/2023
Sample ID :
Lab No :
Sampled:MP-11
98661 Matrix:
6/14/2023 10:59
Air
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
TO-15 Prep
TO-15 Prep Batch(es):V34643 06/21/23 09:00 V34734 06/20/23 09:00
32.4 µg/m3 0.242 0.860Propene 1 06/21/23 23:52 V34658ENM
<0.124 µg/m3 0.124 2.13
Styrene 1 06/21/23 23:52 V34658ENM
<0.104 µg/m3 0.104 3.431,1,2,2-Tetrachloroethane 1 06/21/23 23:52 V34658ENM
112 µg/m3 0.181 3.39Tetrachloroethene 1 06/21/23 23:52 V34658ENM
32.2 µg/m3 0.107 1.47Tetrahydrofuran 1 06/21/23 23:52 V34658ENM
15.4 µg/m3 0.090 1.88Toluene 1 06/21/23 23:52 V34658ENM
<0.209 µg/m3 0.209 3.711,2,4-Trichlorobenzene 1 06/21/23 23:52 V34658ENM
<0.144 µg/m3 0.144 2.731,1,1-Trichloroethane 1 06/21/23 23:52 V34658ENM
<0.087 µg/m3 0.087 2.73
1,1,2-Trichloroethane 1 06/21/23 23:52 V34658ENM
<0.199 µg/m3 0.199 2.15Trichloroethene 1 06/21/23 23:52 V34658ENM
83.5 µg/m3 0.130 2.81Trichlorofluoromethane 1 06/21/23 23:52 V34658ENM
5.31 µg/m3 0.110 2.461,2,4-Trimethylbenzene 1 06/21/23 23:52 V34658ENM
0.747 J µg/m3 0.236 2.461,3,5-Trimethylbenzene 1 06/21/23 23:52 V34658ENM
<0.224 µg/m3 0.224 1.76Vinyl Acetate 1 06/21/23 23:52 V34658ENM
<0.127 µg/m3 0.127 1.28Vinyl Chloride 1 06/21/23 23:52 V34658ENM
2.29 µg/m3 0.157 2.17o-Xylene 1 06/21/23 23:52 V34658ENM
6.47 µg/m3 0.217 5.65m,p-Xylene 1 06/21/23 23:52 V34658ENM
8.76 µg/m3 0.157 2.17Xylene (Total)1 06/21/23 23:52 V34658
Surrogate: 4-Bromofluorobenzene 95.3 Limits: 70-130%06/21/23 23:521 ENM V34658
Surrogate: 4-Bromofluorobenzene 94.1 Limits: 70-130%06/21/23 03:2420 ENM V34735
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 45 of 62
Quality Control Data
23-167-0022Report No:
Project Description:
Client ID:Mid-Atlantic Associates, Inc. - Raleigh
North Hills
QC Prep Batch Method:
Volatile Organic Compounds in Air- GC/MS
TO-15
V34532QC Analytical Batch(es):
Analysis Method:
Analysis Description:
TO-15 Prep
QC Prep:V34530
Associated Lab Samples: 98651, 98652
LRB-V34530 Matrix: AIRLab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
06/20/23 10:354.750.2020.581µg/m3Acetone
06/20/23 10:351.600.073<0.073µg/m3Benzene
06/20/23 10:3510.40.147<0.147µg/m3Benzyl Chloride
06/20/23 10:353.350.150<0.150µg/m3Bromodichloromethane
06/20/23 10:355.170.153<0.153µg/m3Bromoform
06/20/23 10:351.940.115<0.115µg/m3Bromomethane
06/20/23 10:351.110.328<0.328µg/m31,3-Butadiene
06/20/23 10:356.230.060<0.060µg/m3Carbon Disulfide
06/20/23 10:353.150.155<0.155µg/m3Carbon Tetrachloride
06/20/23 10:352.300.107<0.107µg/m3Chlorobenzene
06/20/23 10:354.260.208<0.208µg/m3Chlorodibromomethane
06/20/23 10:351.320.164<0.164µg/m3Chloroethane
06/20/23 10:352.440.086<0.086µg/m3Chloroform
06/20/23 10:351.030.067<0.067µg/m3Chloromethane
06/20/23 10:353.440.161<0.161µg/m3Cyclohexane
06/20/23 10:353.840.151<0.151µg/m31,2-Dibromoethane
06/20/23 10:353.010.096<0.096µg/m31,2-Dichlorobenzene
06/20/23 10:3512.00.174<0.174µg/m31,3-Dichlorobenzene
06/20/23 10:353.010.186<0.186µg/m31,4-Dichlorobenzene
06/20/23 10:352.470.134<0.134µg/m3Dichlorodifluoromethane
06/20/23 10:352.020.101<0.101µg/m31,1-Dichloroethane
06/20/23 10:352.020.129<0.129µg/m31,2-Dichloroethane
06/20/23 10:351.980.107<0.107µg/m31,1-Dichloroethene
06/20/23 10:351.980.095<0.095µg/m3cis-1,2-Dichloroethene
06/20/23 10:351.980.108<0.108µg/m3trans-1,2-Dichloroethene
06/20/23 10:352.310.205<0.205µg/m31,2-Dichloropropane
06/20/23 10:353.500.622<0.622µg/m31,2-Dichlorotetrafluoroethane
Page 1 of 12Date:06/27/2023 03:01 PM
Page 46 of 62
Quality Control Data
23-167-0022Report No:
Project Description:
Client ID:Mid-Atlantic Associates, Inc. - Raleigh
North Hills
QC Prep Batch Method:
Volatile Organic Compounds in Air- GC/MS
TO-15
V34532QC Analytical Batch(es):
Analysis Method:
Analysis Description:
TO-15 Prep
QC Prep:V34530
Associated Lab Samples: 98651, 98652
LRB-V34530 Matrix: AIRLab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
06/20/23 10:352.270.178<0.178µg/m3cis-1,3-Dichloropropene
06/20/23 10:352.270.178<0.178µg/m3trans-1,3-Dichloropropene
06/20/23 10:351.800.435<0.435µg/m31,4-Dioxane
06/20/23 10:351.800.136<0.136µg/m3Ethyl Acetate
06/20/23 10:352.170.106<0.106µg/m3Ethylbenzene
06/20/23 10:352.460.128<0.128µg/m34-Ethyltoluene
06/20/23 10:353.830.561<0.561µg/m31,1,2-Trichloro-1,2,2-trifluoroethane
06/20/23 10:352.050.143<0.143µg/m3Heptane
06/20/23 10:355.330.330<0.330µg/m3Hexachlorobutadiene
06/20/23 10:351.760.047<0.047µg/m3n-Hexane
06/20/23 10:352.050.285<0.285µg/m32-Hexanone
06/20/23 10:354.920.1390.535µg/m3Isopropyl Alcohol
06/20/23 10:351.470.224<0.224µg/m3Methyl Ethyl Ketone (MEK)
06/20/23 10:351.800.033<0.033µg/m3Methyl tert-butyl ether (MTBE)
06/20/23 10:352.050.121<0.121µg/m34-Methyl-2-Pentanone
06/20/23 10:351.740.488<0.488µg/m3Methylene Chloride
06/20/23 10:352.620.183<0.183µg/m3Naphthalene
06/20/23 10:350.8600.242<0.242µg/m3Propene
06/20/23 10:352.130.124<0.124µg/m3Styrene
06/20/23 10:353.430.104<0.104µg/m31,1,2,2-Tetrachloroethane
06/20/23 10:353.390.181<0.181µg/m3Tetrachloroethene
06/20/23 10:351.470.107<0.107µg/m3Tetrahydrofuran
06/20/23 10:351.880.090<0.090µg/m3Toluene
06/20/23 10:353.710.209<0.209µg/m31,2,4-Trichlorobenzene
06/20/23 10:352.730.144<0.144µg/m31,1,1-Trichloroethane
06/20/23 10:352.730.087<0.087µg/m31,1,2-Trichloroethane
06/20/23 10:352.150.199<0.199µg/m3Trichloroethene
Page 2 of 12Date:06/27/2023 03:01 PM
Page 47 of 62
Quality Control Data
23-167-0022Report No:
Project Description:
Client ID:Mid-Atlantic Associates, Inc. - Raleigh
North Hills
QC Prep Batch Method:
Volatile Organic Compounds in Air- GC/MS
TO-15
V34532QC Analytical Batch(es):
Analysis Method:
Analysis Description:
TO-15 Prep
QC Prep:V34530
Associated Lab Samples: 98651, 98652
LRB-V34530 Matrix: AIRLab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
06/20/23 10:352.810.130<0.130µg/m3Trichlorofluoromethane
06/20/23 10:352.460.110<0.110µg/m31,2,4-Trimethylbenzene
06/20/23 10:352.460.236<0.236µg/m31,3,5-Trimethylbenzene
06/20/23 10:351.760.224<0.224µg/m3Vinyl Acetate
06/20/23 10:351.280.127<0.127µg/m3Vinyl Chloride
06/20/23 10:352.170.157<0.157µg/m3o-Xylene
06/20/23 10:355.650.217<0.217µg/m3m,p-Xylene
06/20/23 10:354-Bromofluorobenzene (S)94.6 70-130
LCS-V34530Laboratory Control Sample
Parameter
LCS %RecLCS
Result
Spike
Conc.Units
% Rec
Limits
11013.111.9µg/m3Acetone 70-130
10717.116.0µg/m3Benzene 70-130
10727.625.9µg/m3Benzyl Chloride 70-130
10936.433.5µg/m3Bromodichloromethane 70-130
10453.951.7µg/m3Bromoform 70-130
11822.819.4µg/m3Bromomethane 70-130
11412.611.1µg/m31,3-Butadiene 70-130
11618.115.6µg/m3Carbon Disulfide 70-130
10934.331.5µg/m3Carbon Tetrachloride 70-130
11125.623.0µg/m3Chlorobenzene 70-130
10946.642.6µg/m3Chlorodibromomethane 70-130
11314.913.2µg/m3Chloroethane 70-130
11227.324.4µg/m3Chloroform 70-130
11511.810.3µg/m3Chloromethane 70-130
10818.517.2µg/m3Cyclohexane 70-130
Page 3 of 12Date:06/27/2023 03:01 PM
Page 48 of 62
Quality Control Data
23-167-0022Report No:
Project Description:
Client ID:Mid-Atlantic Associates, Inc. - Raleigh
North Hills
QC Prep Batch Method:
Volatile Organic Compounds in Air- GC/MS
TO-15
V34532QC Analytical Batch(es):
Analysis Method:
Analysis Description:
TO-15 Prep
QC Prep:V34530
LCS-V34530Laboratory Control Sample
Parameter
LCS %RecLCS
Result
Spike
Conc.Units
% Rec
Limits
11343.238.4µg/m31,2-Dibromoethane 70-130
11835.630.1µg/m31,2-Dichlorobenzene 70-130
11935.730.1µg/m31,3-Dichlorobenzene 70-130
12236.630.1µg/m31,4-Dichlorobenzene 70-130
11829.124.7µg/m3Dichlorodifluoromethane 70-130
11623.420.2µg/m31,1-Dichloroethane 70-130
11122.420.2µg/m31,2-Dichloroethane 70-130
11623.019.8µg/m31,1-Dichloroethene 70-130
11622.919.8µg/m3cis-1,2-Dichloroethene 70-130
11723.119.8µg/m3trans-1,2-Dichloroethene 70-130
10724.723.1µg/m31,2-Dichloropropane 70-130
11941.735.0µg/m31,2-Dichlorotetrafluoroethane 70-130
10824.522.7µg/m3cis-1,3-Dichloropropene 70-130
10824.522.7µg/m3trans-1,3-Dichloropropene 70-130
11220.118.0µg/m31,4-Dioxane 70-130
10418.818.0µg/m3Ethyl Acetate 70-130
11224.321.7µg/m3Ethylbenzene 70-130
11327.824.6µg/m34-Ethyltoluene 70-130
11744.838.3µg/m31,1,2-Trichloro-1,2,2-trifluoroethane 70-130
10922.320.5µg/m3Heptane 70-130
10857.653.3µg/m3Hexachlorobutadiene 70-130
11420.117.6µg/m3n-Hexane 70-130
10922.320.5µg/m32-Hexanone 70-130
11113.612.3µg/m3Isopropyl Alcohol 70-130
10916.114.8µg/m3Methyl Ethyl Ketone (MEK)70-130
11220.218.0µg/m3Methyl tert-butyl ether (MTBE)70-130
10822.120.5µg/m34-Methyl-2-Pentanone 70-130
Page 4 of 12Date:06/27/2023 03:01 PM
Page 49 of 62
Quality Control Data
23-167-0022Report No:
Project Description:
Client ID:Mid-Atlantic Associates, Inc. - Raleigh
North Hills
QC Prep Batch Method:
Volatile Organic Compounds in Air- GC/MS
TO-15
V34532QC Analytical Batch(es):
Analysis Method:
Analysis Description:
TO-15 Prep
QC Prep:V34530
LCS-V34530Laboratory Control Sample
Parameter
LCS %RecLCS
Result
Spike
Conc.Units
% Rec
Limits
10618.517.4µg/m3Methylene Chloride 70-130
10627.826.2µg/m3Naphthalene 70-130
1059.078.61µg/m3Propene 70-130
10021.421.3µg/m3Styrene 70-130
10837.234.3µg/m31,1,2,2-Tetrachloroethane 70-130
10836.533.9µg/m3Tetrachloroethene 70-130
10916.014.7µg/m3Tetrahydrofuran 70-130
10820.318.8µg/m3Toluene 70-130
10739.637.1µg/m31,2,4-Trichlorobenzene 70-130
11030.027.3µg/m31,1,1-Trichloroethane 70-130
11130.327.3µg/m31,1,2-Trichloroethane 70-130
11129.826.9µg/m3Trichloroethene 70-130
11833.228.1µg/m3Trichlorofluoromethane 70-130
10826.524.6µg/m31,2,4-Trimethylbenzene 70-130
11528.424.6µg/m31,3,5-Trimethylbenzene 70-130
11319.917.6µg/m3Vinyl Acetate 70-130
11614.812.8µg/m3Vinyl Chloride 70-130
11124.121.7µg/m3o-Xylene 70-130
10043.543.4µg/m3m,p-Xylene 70-130
99.44-Bromofluorobenzene (S)70-130
Page 5 of 12Date:06/27/2023 03:01 PM
Page 50 of 62
Quality Control Data
23-167-0022Report No:
Project Description:
Client ID:Mid-Atlantic Associates, Inc. - Raleigh
North Hills
QC Prep Batch Method:
Volatile Organic Compounds in Air- GC/MS
TO-15
V34658QC Analytical Batch(es):
Analysis Method:
Analysis Description:
TO-15 Prep
QC Prep:V34643
Associated Lab Samples: 98653, 98654, 98655, 98656, 98657, 98658, 98659, 98660, 98661
LRB-V34643 Matrix: AIRLab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
06/21/23 13:024.750.2020.893µg/m3Acetone
06/21/23 13:021.600.073<0.073µg/m3Benzene
06/21/23 13:0210.40.147<0.147µg/m3Benzyl Chloride
06/21/23 13:023.350.150<0.150µg/m3Bromodichloromethane
06/21/23 13:025.170.153<0.153µg/m3Bromoform
06/21/23 13:021.940.115<0.115µg/m3Bromomethane
06/21/23 13:021.110.328<0.328µg/m31,3-Butadiene
06/21/23 13:026.230.060<0.060µg/m3Carbon Disulfide
06/21/23 13:023.150.155<0.155µg/m3Carbon Tetrachloride
06/21/23 13:022.300.107<0.107µg/m3Chlorobenzene
06/21/23 13:024.260.208<0.208µg/m3Chlorodibromomethane
06/21/23 13:021.320.164<0.164µg/m3Chloroethane
06/21/23 13:022.440.086<0.086µg/m3Chloroform
06/21/23 13:021.030.067<0.067µg/m3Chloromethane
06/21/23 13:023.440.161<0.161µg/m3Cyclohexane
06/21/23 13:023.840.151<0.151µg/m31,2-Dibromoethane
06/21/23 13:023.010.096<0.096µg/m31,2-Dichlorobenzene
06/21/23 13:0212.00.174<0.174µg/m31,3-Dichlorobenzene
06/21/23 13:023.010.186<0.186µg/m31,4-Dichlorobenzene
06/21/23 13:022.470.134<0.134µg/m3Dichlorodifluoromethane
06/21/23 13:022.020.101<0.101µg/m31,1-Dichloroethane
06/21/23 13:022.020.129<0.129µg/m31,2-Dichloroethane
06/21/23 13:021.980.107<0.107µg/m31,1-Dichloroethene
06/21/23 13:021.980.095<0.095µg/m3cis-1,2-Dichloroethene
06/21/23 13:021.980.108<0.108µg/m3trans-1,2-Dichloroethene
06/21/23 13:022.310.205<0.205µg/m31,2-Dichloropropane
06/21/23 13:023.500.622<0.622µg/m31,2-Dichlorotetrafluoroethane
Page 6 of 12Date:06/27/2023 03:01 PM
Page 51 of 62
Quality Control Data
23-167-0022Report No:
Project Description:
Client ID:Mid-Atlantic Associates, Inc. - Raleigh
North Hills
QC Prep Batch Method:
Volatile Organic Compounds in Air- GC/MS
TO-15
V34658QC Analytical Batch(es):
Analysis Method:
Analysis Description:
TO-15 Prep
QC Prep:V34643
Associated Lab Samples: 98653, 98654, 98655, 98656, 98657, 98658, 98659, 98660, 98661
LRB-V34643 Matrix: AIRLab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
06/21/23 13:022.270.178<0.178µg/m3cis-1,3-Dichloropropene
06/21/23 13:022.270.178<0.178µg/m3trans-1,3-Dichloropropene
06/21/23 13:021.800.435<0.435µg/m31,4-Dioxane
06/21/23 13:021.800.136<0.136µg/m3Ethyl Acetate
06/21/23 13:022.170.106<0.106µg/m3Ethylbenzene
06/21/23 13:022.460.128<0.128µg/m34-Ethyltoluene
06/21/23 13:023.830.561<0.561µg/m31,1,2-Trichloro-1,2,2-trifluoroethane
06/21/23 13:022.050.143<0.143µg/m3Heptane
06/21/23 13:025.330.330<0.330µg/m3Hexachlorobutadiene
06/21/23 13:021.760.047<0.047µg/m3n-Hexane
06/21/23 13:022.050.285<0.285µg/m32-Hexanone
06/21/23 13:024.920.1390.346µg/m3Isopropyl Alcohol
06/21/23 13:021.470.224<0.224µg/m3Methyl Ethyl Ketone (MEK)
06/21/23 13:021.800.033<0.033µg/m3Methyl tert-butyl ether (MTBE)
06/21/23 13:022.050.121<0.121µg/m34-Methyl-2-Pentanone
06/21/23 13:021.740.488<0.488µg/m3Methylene Chloride
06/21/23 13:022.620.183<0.183µg/m3Naphthalene
06/21/23 13:020.8600.242<0.242µg/m3Propene
06/21/23 13:022.130.124<0.124µg/m3Styrene
06/21/23 13:023.430.104<0.104µg/m31,1,2,2-Tetrachloroethane
06/21/23 13:023.390.181<0.181µg/m3Tetrachloroethene
06/21/23 13:021.470.107<0.107µg/m3Tetrahydrofuran
06/21/23 13:021.880.090<0.090µg/m3Toluene
06/21/23 13:023.710.209<0.209µg/m31,2,4-Trichlorobenzene
06/21/23 13:022.730.144<0.144µg/m31,1,1-Trichloroethane
06/21/23 13:022.730.087<0.087µg/m31,1,2-Trichloroethane
06/21/23 13:022.150.199<0.199µg/m3Trichloroethene
Page 7 of 12Date:06/27/2023 03:01 PM
Page 52 of 62
Quality Control Data
23-167-0022Report No:
Project Description:
Client ID:Mid-Atlantic Associates, Inc. - Raleigh
North Hills
QC Prep Batch Method:
Volatile Organic Compounds in Air- GC/MS
TO-15
V34658QC Analytical Batch(es):
Analysis Method:
Analysis Description:
TO-15 Prep
QC Prep:V34643
Associated Lab Samples: 98653, 98654, 98655, 98656, 98657, 98658, 98659, 98660, 98661
LRB-V34643 Matrix: AIRLab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
06/21/23 13:022.810.1300.595µg/m3Trichlorofluoromethane
06/21/23 13:022.460.110<0.110µg/m31,2,4-Trimethylbenzene
06/21/23 13:022.460.236<0.236µg/m31,3,5-Trimethylbenzene
06/21/23 13:021.760.224<0.224µg/m3Vinyl Acetate
06/21/23 13:021.280.127<0.127µg/m3Vinyl Chloride
06/21/23 13:022.170.157<0.157µg/m3o-Xylene
06/21/23 13:025.650.217<0.217µg/m3m,p-Xylene
06/21/23 13:024-Bromofluorobenzene (S)96.0 70-130
LCS-V34643Laboratory Control Sample
Parameter
LCS %RecLCS
Result
Spike
Conc.Units
% Rec
Limits
11513.711.9µg/m3Acetone 70-130
11518.416.0µg/m3Benzene 70-130
11128.825.9µg/m3Benzyl Chloride 70-130
11538.633.5µg/m3Bromodichloromethane 70-130
11258.151.7µg/m3Bromoform 70-130
12323.819.4µg/m3Bromomethane 70-130
11813.111.1µg/m31,3-Butadiene 70-130
12219.015.6µg/m3Carbon Disulfide 70-130
11636.431.5µg/m3Carbon Tetrachloride 70-130
11927.323.0µg/m3Chlorobenzene 70-130
11749.942.6µg/m3Chlorodibromomethane 70-130
11915.713.2µg/m3Chloroethane 70-130
11929.124.4µg/m3Chloroform 70-130
12112.510.3µg/m3Chloromethane 70-130
11419.617.2µg/m3Cyclohexane 70-130
Page 8 of 12Date:06/27/2023 03:01 PM
Page 53 of 62
Quality Control Data
23-167-0022Report No:
Project Description:
Client ID:Mid-Atlantic Associates, Inc. - Raleigh
North Hills
QC Prep Batch Method:
Volatile Organic Compounds in Air- GC/MS
TO-15
V34658QC Analytical Batch(es):
Analysis Method:
Analysis Description:
TO-15 Prep
QC Prep:V34643
LCS-V34643Laboratory Control Sample
Parameter
LCS %RecLCS
Result
Spike
Conc.Units
% Rec
Limits
12046.238.4µg/m31,2-Dibromoethane 70-130
12738.230.1µg/m31,2-Dichlorobenzene 70-130
12637.830.1µg/m31,3-Dichlorobenzene 70-130
12938.830.1µg/m31,4-Dichlorobenzene 70-130
12430.724.7µg/m3Dichlorodifluoromethane 70-130
12024.320.2µg/m31,1-Dichloroethane 70-130
11723.720.2µg/m31,2-Dichloroethane 70-130
12224.219.8µg/m31,1-Dichloroethene 70-130
12023.819.8µg/m3cis-1,2-Dichloroethene 70-130
12023.719.8µg/m3trans-1,2-Dichloroethene 70-130
11526.623.1µg/m31,2-Dichloropropane 70-130
12443.535.0µg/m31,2-Dichlorotetrafluoroethane 70-130
11526.122.7µg/m3cis-1,3-Dichloropropene 70-130
11526.122.7µg/m3trans-1,3-Dichloropropene 70-130
11620.918.0µg/m31,4-Dioxane 70-130
11220.218.0µg/m3Ethyl Acetate 70-130
11825.721.7µg/m3Ethylbenzene 70-130
11929.224.6µg/m34-Ethyltoluene 70-130
12447.438.3µg/m31,1,2-Trichloro-1,2,2-trifluoroethane 70-130
11323.220.5µg/m3Heptane 70-130
11862.753.3µg/m3Hexachlorobutadiene 70-130
11820.717.6µg/m3n-Hexane 70-130
11523.620.5µg/m32-Hexanone 70-130
11013.512.3µg/m3Isopropyl Alcohol 70-130
11116.414.8µg/m3Methyl Ethyl Ketone (MEK)70-130
11721.018.0µg/m3Methyl tert-butyl ether (MTBE)70-130
10922.420.5µg/m34-Methyl-2-Pentanone 70-130
Page 9 of 12Date:06/27/2023 03:01 PM
Page 54 of 62
Quality Control Data
23-167-0022Report No:
Project Description:
Client ID:Mid-Atlantic Associates, Inc. - Raleigh
North Hills
QC Prep Batch Method:
Volatile Organic Compounds in Air- GC/MS
TO-15
V34658QC Analytical Batch(es):
Analysis Method:
Analysis Description:
TO-15 Prep
QC Prep:V34643
LCS-V34643Laboratory Control Sample
Parameter
LCS %RecLCS
Result
Spike
Conc.Units
% Rec
Limits
11219.517.4µg/m3Methylene Chloride 70-130
11229.426.2µg/m3Naphthalene 70-130
1099.388.61µg/m3Propene 70-130
10622.621.3µg/m3Styrene 70-130
11740.234.3µg/m31,1,2,2-Tetrachloroethane 70-130
11639.333.9µg/m3Tetrachloroethene 70-130
11216.514.7µg/m3Tetrahydrofuran 70-130
11421.518.8µg/m3Toluene 70-130
11442.337.1µg/m31,2,4-Trichlorobenzene 70-130
11731.927.3µg/m31,1,1-Trichloroethane 70-130
12233.227.3µg/m31,1,2-Trichloroethane 70-130
11931.926.9µg/m3Trichloroethene 70-130
12434.928.1µg/m3Trichlorofluoromethane 70-130
11327.724.6µg/m31,2,4-Trimethylbenzene 70-130
12330.224.6µg/m31,3,5-Trimethylbenzene 70-130
12021.217.6µg/m3Vinyl Acetate 70-130
12315.712.8µg/m3Vinyl Chloride 70-130
11825.521.7µg/m3o-Xylene 70-130
10646.143.4µg/m3m,p-Xylene 70-130
98.64-Bromofluorobenzene (S)70-130
Page 10 of 12Date:06/27/2023 03:01 PM
Page 55 of 62
Quality Control Data
23-167-0022Report No:
Project Description:
Client ID:Mid-Atlantic Associates, Inc. - Raleigh
North Hills
QC Prep Batch Method:
Volatile Organic Compounds in Air- GC/MS
TO-15
V34664QC Analytical Batch(es):
Analysis Method:
Analysis Description:
TO-15 Prep
QC Prep:V34661
Associated Lab Samples: 98651
LRB-V34661 Matrix: AIRLab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
06/19/23 10:564.750.2020.337µg/m3Acetone
06/19/23 10:564-Bromofluorobenzene (S)96.0 70-130
LCS-V34661Laboratory Control Sample
Parameter
LCS %RecLCS
Result
Spike
Conc.Units
% Rec
Limits
11313.511.9µg/m3Acetone 70-130
98.84-Bromofluorobenzene (S)70-130
Page 11 of 12Date:06/27/2023 03:01 PM
Page 56 of 62
Quality Control Data
23-167-0022Report No:
Project Description:
Client ID:Mid-Atlantic Associates, Inc. - Raleigh
North Hills
QC Prep Batch Method:
Volatile Organic Compounds in Air- GC/MS
TO-15
V34735QC Analytical Batch(es):
Analysis Method:
Analysis Description:
TO-15 Prep
QC Prep:V34734
Associated Lab Samples: 98655, 98657, 98658, 98659, 98660, 98661
LRB-V34734 Matrix: AIRLab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
06/20/23 10:354.750.2020.581µg/m3Acetone
06/20/23 10:352.440.086<0.086µg/m3Chloroform
06/20/23 10:353.390.181<0.181µg/m3Tetrachloroethene
06/20/23 10:352.810.130<0.130µg/m3Trichlorofluoromethane
06/20/23 10:354-Bromofluorobenzene (S)94.6 70-130
LCS-V34734Laboratory Control Sample
Parameter
LCS %RecLCS
Result
Spike
Conc.Units
% Rec
Limits
11013.111.9µg/m3Acetone 70-130
11227.324.4µg/m3Chloroform 70-130
10836.533.9µg/m3Tetrachloroethene 70-130
11833.228.1µg/m3Trichlorofluoromethane 70-130
99.44-Bromofluorobenzene (S)70-130
Page 12 of 12Date:06/27/2023 03:01 PM
Page 57 of 62
Fed Ex
UPS
US Postal
Client
Lab
Courier
Other :
Shipment Receipt Form
Customer Number:
Customer Name:
Report Number:23-167-0022
Mid-Atlantic Associates, Inc. - Raleigh
01139
Shipping Method
Shipping container/cooler uncompromised?
Thermometer ID:n/a
Chain of Custody (COC) present?Yes No
Yes No Not Present
Yes No Not Present
Yes No
COC agrees with sample label(s)?Yes No
COC properly completed
Samples in proper containers?
Sample containers intact?
Sufficient sample volume for indicated test(s)?
All samples received within holding time?
Cooler temperature in compliance?
Yes No
Yes No
Yes No
Yes No
Yes No
Yes NoCooler/Samples arrived at the laboratory on ice.
Samples were considered acceptable as cooling
process had begun.
Yes No
Yes No N/A
Yes No N/A
Yes No N/ASoil VOA method 5035 – compliance criteria met
Water - Sample containers properly preserved
Water - VOA vials free of headspace Yes No N/A
Trip Blanks received with VOAs
Low concentration EnCore samplers (48 hr)
High concentration pre-weighed (methanol -14 d) Low conc pre-weighed vials (Sod Bis -14 d)
High concentration container (48 hr)
Custody seals intact on shipping container/cooler?
Custody seals intact on sample bottles?
Number of coolers/boxes received
Yes No
1
Signature:Angelo Norvell Date & Time:06/16/2023 15:27:42
Special precautions or instructions included?
Comments:
Page 58 of 62
Page 59 of 62
Page 60 of 62
Page 61 of 62
Page 62 of 62

APPENDIX F

INDOOR AIR AND SUB-SLAB SOIL GAS VAPOR INTRUSION RISK CALCULATIONS
DEQ Risk Calculator - Vapor Intrusion - Resident Indoor Air
Version Date: January 2023
Basis: November 2022 EPA RSL Table
Site ID:
Exposure Unit ID: EU 1 - Adjusted
CAS #Chemical Name:
Indoor Air
Concentration
(ug/m3)
IUR
(ug/m3)-1
muta-
gen V
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
RfC
(mg/m3)
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
67-64-1 Acetone 51.6 V - -
71-43-2 Benzene 1.15 0.0000078 V 3.6E-01 3.00E-02 6.3E+00 3.2E-06 3.7E-02
74-87-3 Chloromethane 0.067 V -9.00E-02 1.9E+01 7.1E-04
75-71-8 Dichlorodifluoromethane 2.78 V -1.00E-01 2.1E+01 2.7E-02
107-06-2 Dichloroethane, 1,2-0.129 0.000026 V 1.1E-01 7.00E-03 1.5E+00 1.2E-06 1.8E-02
156-60-5 Dichloroethylene, trans-1,2-0.108 V -4.00E-02 8.3E+00 2.6E-03
100-41-4 Ethylbenzene 1.6 0.0000025 V 1.1E+00 1.00E+00 2.1E+02 1.4E-06 1.5E-03
109-99-9 ~Tetrahydrofuran 1.43 V - 2.00E+00 4.2E+02 6.9E-04
142-82-5 Heptane, N-1.38 V -4.00E-01 8.3E+01 3.3E-03
110-54-3 Hexane, N-1.07 V -7.00E-01 1.5E+02 1.5E-03
67-63-0 Isopropanol 2.47 V -2.00E-01 4.2E+01 1.2E-02
78-93-3 Methyl Ethyl Ketone (2-Butanone)19.3 V - 5.00E+00 1.0E+03 3.7E-03
108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)0.528 V - 3.00E+00 6.3E+02 1.7E-04
75-09-2 Methylene Chloride 1.58 0.00000001 M V 1.0E+02 6.00E-01 1.3E+02 1.6E-08 2.5E-03
91-20-3 ~Naphthalene 0.183 0.000034 V 8.3E-02 3.00E-03 6.3E-01 2.2E-06 5.8E-02
100-42-5 Styrene 3.45 V - 1.00E+00 2.1E+02 3.3E-03
127-18-4 Tetrachloroethylene 0.786 0.00000026 V 1.1E+01 4.00E-02 8.3E+00 7.3E-08 1.9E-02
108-88-3 Toluene 10.5 V - 5.00E+00 1.0E+03 2.0E-03
75-69-4 Trichlorofluoromethane 1.62 V - -
95-63-6 Trimethylbenzene, 1,2,4-5.76 V -6.00E-02 1.3E+01 9.2E-02
108-67-8 Trimethylbenzene, 1,3,5-0.983 V -6.00E-02 1.3E+01 1.6E-02
1330-20-7 Xylenes 9.56 V -1.00E-01 2.1E+01 9.2E-02
Cumulative: 8.1E-06 3.9E-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 - Non-Residential Worker Indoor Air
Version Date: January 2023
Basis: November 2022 EPA RSL Table
Site ID:
Exposure Unit ID: EU 1 - Adjusted
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 51.6 - -
71-43-2 Benzene 1.15 1.6E+00 2.6E+01 7.3E-07 8.8E-03
74-87-3 Chloromethane 0.067 - 7.9E+01 1.7E-04
75-71-8 Dichlorodifluoromethane 2.78 - 8.8E+01 6.3E-03
107-06-2 Dichloroethane, 1,2-0.129 4.7E-01 6.1E+00 2.7E-07 4.2E-03
156-60-5 Dichloroethylene, trans-1,2-0.108 - 3.5E+01 6.2E-04
100-41-4 Ethylbenzene 1.6 4.9E+00 8.8E+02 3.3E-07 3.7E-04
109-99-9 ~Tetrahydrofuran 1.43 - 1.8E+03 1.6E-04
142-82-5 Heptane, N- 1.38 - 3.5E+02 7.9E-04
110-54-3 Hexane, N-1.07 - 6.1E+02 3.5E-04
67-63-0 Isopropanol 2.47 - 1.8E+02 2.8E-03
78-93-3 Methyl Ethyl Ketone (2-Butanone)19.3 - 4.4E+03 8.8E-04
108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)0.528 - 2.6E+03 4.0E-05
75-09-2 Methylene Chloride 1.58 1.2E+03 5.3E+02 1.3E-09 6.0E-04
91-20-3 ~Naphthalene 0.183 3.6E-01 2.6E+00 5.1E-07 1.4E-02
100-42-5 Styrene 3.45 - 8.8E+02 7.9E-04
127-18-4 Tetrachloroethylene 0.786 4.7E+01 3.5E+01 1.7E-08 4.5E-03
108-88-3 Toluene 10.5 - 4.4E+03 4.8E-04
75-69-4 Trichlorofluoromethane 1.62 - -
95-63-6 Trimethylbenzene, 1,2,4-5.76 - 5.3E+01 2.2E-02
108-67-8 Trimethylbenzene, 1,3,5-0.983 - 5.3E+01 3.7E-03
1330-20-7 Xylenes 9.56 - 8.8E+01 2.2E-02
Cumulative: 1.9E-06 9.3E-02
All concentrations are in ug/m3
Output Form 3F
** - 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: January 2023
Basis: November 2022 EPA RSL Table
Site ID:
Exposure Unit ID: EU 2 - Adjusted
CAS #Chemical Name:
Indoor Air
Concentration
(ug/m3)
IUR
(ug/m3)-1
muta-
gen V
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
RfC
(mg/m3)
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
67-64-1 Acetone 47.2 V - -
71-43-2 Benzene 1.06 0.0000078 V 3.6E-01 3.00E-02 6.3E+00 2.9E-06 3.4E-02
74-87-3 Chloromethane 0.067 V -9.00E-02 1.9E+01 7.1E-04
75-71-8 Dichlorodifluoromethane 2.82 V -1.00E-01 2.1E+01 2.7E-02
141-78-6 Ethyl Acetate 0.645 V -7.00E-02 1.5E+01 8.8E-03
100-41-4 Ethylbenzene 1.16 0.0000025 V 1.1E+00 1.00E+00 2.1E+02 1.0E-06 1.1E-03
109-99-9 ~Tetrahydrofuran 4.62 V - 2.00E+00 4.2E+02 2.2E-03
142-82-5 Heptane, N-0.672 V -4.00E-01 8.3E+01 1.6E-03
67-63-0 Isopropanol 4 V -2.00E-01 4.2E+01 1.9E-02
78-93-3 Methyl Ethyl Ketone (2-Butanone)3.02 V - 5.00E+00 1.0E+03 5.8E-04
108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)0.823 V - 3.00E+00 6.3E+02 2.6E-04
75-09-2 Methylene Chloride 0.488 0.00000001 M V 1.0E+02 6.00E-01 1.3E+02 4.8E-09 7.8E-04
91-20-3 ~Naphthalene 5.12 0.000034 V 8.3E-02 3.00E-03 6.3E-01 6.2E-05 1.6E+00
100-42-5 Styrene 4.01 V - 1.00E+00 2.1E+02 3.8E-03
108-88-3 Toluene 16.3 V - 5.00E+00 1.0E+03 3.1E-03
76-13-1 Trichloro-1,2,2-trifluoroethane, 1,1,2-0.59 V - 5.00E+00 1.0E+03 1.1E-04
75-69-4 Trichlorofluoromethane 1.62 V - -
95-63-6 Trimethylbenzene, 1,2,4-4.17 V -6.00E-02 1.3E+01 6.7E-02
108-67-8 Trimethylbenzene, 1,3,5-0.584 V -6.00E-02 1.3E+01 9.3E-03
1330-20-7 Xylenes 7.71 V -1.00E-01 2.1E+01 7.4E-02
Cumulative: 6.6E-05 1.9E+00
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 - Non-Residential Worker Indoor Air
Version Date: January 2023
Basis: November 2022 EPA RSL Table
Site ID:
Exposure Unit ID: EU 2 - Adjusted
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 47.2 - -
71-43-2 Benzene 1.06 1.6E+00 2.6E+01 6.7E-07 8.1E-03
74-87-3 Chloromethane 0.067 - 7.9E+01 1.7E-04
75-71-8 Dichlorodifluoromethane 2.82 - 8.8E+01 6.4E-03
141-78-6 Ethyl Acetate 0.645 - 6.1E+01 2.1E-03
100-41-4 Ethylbenzene 1.16 4.9E+00 8.8E+02 2.4E-07 2.6E-04
109-99-9 ~Tetrahydrofuran 4.62 - 1.8E+03 5.3E-04
142-82-5 Heptane, N- 0.672 - 3.5E+02 3.8E-04
67-63-0 Isopropanol 4 - 1.8E+02 4.6E-03
78-93-3 Methyl Ethyl Ketone (2-Butanone)3.02 - 4.4E+03 1.4E-04
108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)0.823 - 2.6E+03 6.3E-05
75-09-2 Methylene Chloride 0.488 1.2E+03 5.3E+02 4.0E-10 1.9E-04
91-20-3 ~Naphthalene 5.12 3.6E-01 2.6E+00 1.4E-05 3.9E-01
100-42-5 Styrene 4.01 - 8.8E+02 9.2E-04
108-88-3 Toluene 16.3 - 4.4E+03 7.4E-04
76-13-1 Trichloro-1,2,2-trifluoroethane, 1,1,2-0.59 - 4.4E+03 2.7E-05
75-69-4 Trichlorofluoromethane 1.62 - -
95-63-6 Trimethylbenzene, 1,2,4-4.17 - 5.3E+01 1.6E-02
108-67-8 Trimethylbenzene, 1,3,5-0.584 - 5.3E+01 2.2E-03
1330-20-7 Xylenes 7.71 - 8.8E+01 1.8E-02
Cumulative: 1.5E-05 4.5E-01
All concentrations are in ug/m3
Output Form 3F
** - 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: January 2023
Basis: November 2022 EPA RSL Table
Site ID:
Exposure Unit ID: EU 3 - Adjusted
CAS #Chemical Name:
Indoor Air
Concentration
(ug/m3)
IUR
(ug/m3)-1
muta-
gen V
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
RfC
(mg/m3)
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
67-64-1 Acetone 5.46 V - -
71-43-2 Benzene 0.565 0.0000078 V 3.6E-01 3.00E-02 6.3E+00 1.6E-06 1.8E-02
75-15-0 Carbon Disulfide 2.61 V - 7.00E-01 1.5E+02 3.6E-03
74-87-3 Chloromethane 0.067 V -9.00E-02 1.9E+01 7.1E-04
110-82-7 Cyclohexane 0.161 V - 6.00E+00 1.3E+03 2.6E-05
75-71-8 Dichlorodifluoromethane 2.1 V -1.00E-01 2.1E+01 2.0E-02
100-41-4 Ethylbenzene 1.04 0.0000025 V 1.1E+00 1.00E+00 2.1E+02 9.3E-07 1.0E-03
109-99-9 ~Tetrahydrofuran 25.5 V - 2.00E+00 4.2E+02 1.2E-02
142-82-5 Heptane, N-1.76 V -4.00E-01 8.3E+01 4.2E-03
78-93-3 Methyl Ethyl Ketone (2-Butanone)6.66 V - 5.00E+00 1.0E+03 1.3E-03
108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)0.323 V - 3.00E+00 6.3E+02 1.0E-04
75-09-2 Methylene Chloride 0.944 0.00000001 M V 1.0E+02 6.00E-01 1.3E+02 9.3E-09 1.5E-03
91-20-3 ~Naphthalene 0.183 0.000034 V 8.3E-02 3.00E-03 6.3E-01 2.2E-06 5.8E-02
100-42-5 Styrene 0.124 V - 1.00E+00 2.1E+02 1.2E-04
108-88-3 Toluene 2.6 V - 5.00E+00 1.0E+03 5.0E-04
75-69-4 Trichlorofluoromethane 1.34 V - -
95-63-6 Trimethylbenzene, 1,2,4-4.83 V -6.00E-02 1.3E+01 7.7E-02
108-67-8 Trimethylbenzene, 1,3,5-0.604 V -6.00E-02 1.3E+01 9.7E-03
1330-20-7 Xylenes 6.43 V -1.00E-01 2.1E+01 6.2E-02
Cumulative: 4.7E-06 2.7E-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 - Non-Residential Worker Indoor Air
Version Date: January 2023
Basis: November 2022 EPA RSL Table
Site ID:
Exposure Unit ID: EU 3 - Adjusted
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 5.46 - -
71-43-2 Benzene 0.565 1.6E+00 2.6E+01 3.6E-07 4.3E-03
75-15-0 Carbon Disulfide 2.61 - 6.1E+02 8.5E-04
74-87-3 Chloromethane 0.067 - 7.9E+01 1.7E-04
110-82-7 Cyclohexane 0.161 - 5.3E+03 6.1E-06
75-71-8 Dichlorodifluoromethane 2.1 - 8.8E+01 4.8E-03
100-41-4 Ethylbenzene 1.04 4.9E+00 8.8E+02 2.1E-07 2.4E-04
109-99-9 ~Tetrahydrofuran 25.5 - 1.8E+03 2.9E-03
142-82-5 Heptane, N- 1.76 - 3.5E+02 1.0E-03
78-93-3 Methyl Ethyl Ketone (2-Butanone)6.66 - 4.4E+03 3.0E-04
108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)0.323 - 2.6E+03 2.5E-05
75-09-2 Methylene Chloride 0.944 1.2E+03 5.3E+02 7.7E-10 3.6E-04
91-20-3 ~Naphthalene 0.183 3.6E-01 2.6E+00 5.1E-07 1.4E-02
100-42-5 Styrene 0.124 - 8.8E+02 2.8E-05
108-88-3 Toluene 2.6 - 4.4E+03 1.2E-04
75-69-4 Trichlorofluoromethane 1.34 - -
95-63-6 Trimethylbenzene, 1,2,4-4.83 - 5.3E+01 1.8E-02
108-67-8 Trimethylbenzene, 1,3,5-0.604 - 5.3E+01 2.3E-03
1330-20-7 Xylenes 6.43 - 8.8E+01 1.5E-02
Cumulative: 1.1E-06 6.4E-02
All concentrations are in ug/m3
Output Form 3F
** - 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: January 2023
Basis: November 2022 EPA RSL Table
Site ID:
Exposure Unit ID: EU 4 - Adjusted
CAS #Chemical Name:
Indoor Air
Concentration
(ug/m3)
IUR
(ug/m3)-1
muta-
gen V
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
RfC
(mg/m3)
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
67-64-1 Acetone 22.9 V - -
71-43-2 Benzene 0.68 0.0000078 V 3.6E-01 3.00E-02 6.3E+00 1.9E-06 2.2E-02
74-87-3 Chloromethane 0.842 V -9.00E-02 1.9E+01 9.0E-03
75-71-8 Dichlorodifluoromethane 2.88 V -1.00E-01 2.1E+01 2.8E-02
100-41-4 Ethylbenzene 0.976 0.0000025 V 1.1E+00 1.00E+00 2.1E+02 8.7E-07 9.4E-04
109-99-9 ~Tetrahydrofuran 0.645 V - 2.00E+00 4.2E+02 3.1E-04
142-82-5 Heptane, N-0.405 V -4.00E-01 8.3E+01 9.7E-04
110-54-3 Hexane, N-0.609 V -7.00E-01 1.5E+02 8.3E-04
67-63-0 Isopropanol 2.77 V -2.00E-01 4.2E+01 1.3E-02
78-93-3 Methyl Ethyl Ketone (2-Butanone)3.01 V - 5.00E+00 1.0E+03 5.8E-04
108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)1.17 V - 3.00E+00 6.3E+02 3.7E-04
75-09-2 Methylene Chloride 0.937 0.00000001 M V 1.0E+02 6.00E-01 1.3E+02 9.2E-09 1.5E-03
91-20-3 ~Naphthalene 0.183 0.000034 V 8.3E-02 3.00E-03 6.3E-01 2.2E-06 5.8E-02
100-42-5 Styrene 0.124 V - 1.00E+00 2.1E+02 1.2E-04
108-88-3 Toluene 4.83 V -5.00E+00 1.0E+03 9.3E-04
76-13-1 Trichloro-1,2,2-trifluoroethane, 1,1,2-0.567 V - 5.00E+00 1.0E+03 1.1E-04
75-69-4 Trichlorofluoromethane 1.66 V - -
95-63-6 Trimethylbenzene, 1,2,4-3.38 V -6.00E-02 1.3E+01 5.4E-02
1330-20-7 Xylenes 5.85 V -1.00E-01 2.1E+01 5.6E-02
Cumulative: 5.0E-06 2.5E-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 - Non-Residential Worker Indoor Air
Version Date: January 2023
Basis: November 2022 EPA RSL Table
Site ID:
Exposure Unit ID: EU 4 - Adjusted
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 22.9 - -
71-43-2 Benzene 0.68 1.6E+00 2.6E+01 4.3E-07 5.2E-03
74-87-3 Chloromethane 0.842 - 7.9E+01 2.1E-03
75-71-8 Dichlorodifluoromethane 2.88 - 8.8E+01 6.6E-03
100-41-4 Ethylbenzene 0.976 4.9E+00 8.8E+02 2.0E-07 2.2E-04
109-99-9 ~Tetrahydrofuran 0.645 - 1.8E+03 7.4E-05
142-82-5 Heptane, N- 0.405 - 3.5E+02 2.3E-04
110-54-3 Hexane, N-0.609 - 6.1E+02 2.0E-04
67-63-0 Isopropanol 2.77 - 1.8E+02 3.2E-03
78-93-3 Methyl Ethyl Ketone (2-Butanone)3.01 - 4.4E+03 1.4E-04
108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)1.17 - 2.6E+03 8.9E-05
75-09-2 Methylene Chloride 0.937 1.2E+03 5.3E+02 7.6E-10 3.6E-04
91-20-3 ~Naphthalene 0.183 3.6E-01 2.6E+00 5.1E-07 1.4E-02
100-42-5 Styrene 0.124 - 8.8E+02 2.8E-05
108-88-3 Toluene 4.83 - 4.4E+03 2.2E-04
76-13-1 Trichloro-1,2,2-trifluoroethane, 1,1,2-0.567 - 4.4E+03 2.6E-05
75-69-4 Trichlorofluoromethane 1.66 - -
95-63-6 Trimethylbenzene, 1,2,4-3.38 - 5.3E+01 1.3E-02
1330-20-7 Xylenes 5.85 - 8.8E+01 1.3E-02
Cumulative: 1.1E-06 5.9E-02
All concentrations are in ug/m3
Output Form 3F
** - 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: January 2023
Basis: November 2022 EPA RSL Table
Site ID:
Exposure Unit ID: EU 5 - Adjusted
CAS #Chemical Name:
Indoor Air
Concentration
(ug/m3)
IUR
(ug/m3)-1
muta-
gen V
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
RfC
(mg/m3)
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
67-64-1 Acetone 106 V - -
71-43-2 Benzene 0.859 0.0000078 V 3.6E-01 3.00E-02 6.3E+00 2.4E-06 2.7E-02
75-15-0 Carbon Disulfide 0.292 V - 7.00E-01 1.5E+02 4.0E-04
56-23-5 Carbon Tetrachloride 0.566 0.000006 V 4.7E-01 1.00E-01 2.1E+01 1.2E-06 5.4E-03
108-90-7 Chlorobenzene 0.107 V - 5.00E-02 1.0E+01 2.1E-03
74-87-3 Chloromethane 0.067 V -9.00E-02 1.9E+01 7.1E-04
110-82-7 Cyclohexane 3 V - 6.00E+00 1.3E+03 4.8E-04
75-71-8 Dichlorodifluoromethane 3.02 V -1.00E-01 2.1E+01 2.9E-02
156-60-5 Dichloroethylene, trans-1,2-4.35 V -4.00E-02 8.3E+00 1.0E-01
141-78-6 Ethyl Acetate 2.76 V -7.00E-02 1.5E+01 3.8E-02
100-41-4 Ethylbenzene 1.77 0.0000025 V 1.1E+00 1.00E+00 2.1E+02 1.6E-06 1.7E-03
109-99-9 ~Tetrahydrofuran 3.58 V - 2.00E+00 4.2E+02 1.7E-03
142-82-5 Heptane, N-3.5 V -4.00E-01 8.3E+01 8.4E-03
110-54-3 Hexane, N-2.32 V -7.00E-01 1.5E+02 3.2E-03
67-63-0 Isopropanol 5.13 V -2.00E-01 4.2E+01 2.5E-02
78-93-3 Methyl Ethyl Ketone (2-Butanone)3.61 V - 5.00E+00 1.0E+03 6.9E-04
108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)1.12 V - 3.00E+00 6.3E+02 3.6E-04
75-09-2 Methylene Chloride 4.73 0.00000001 M V 1.0E+02 6.00E-01 1.3E+02 4.7E-08 7.6E-03
91-20-3 ~Naphthalene 0.183 0.000034 V 8.3E-02 3.00E-03 6.3E-01 2.2E-06 5.8E-02
115-07-1 Propylene 0.242 V - 3.00E+00 6.3E+02 7.7E-05
100-42-5 Styrene 3.55 V - 1.00E+00 2.1E+02 3.4E-03
127-18-4 Tetrachloroethylene 4.25 0.00000026 V 1.1E+01 4.00E-02 8.3E+00 3.9E-07 1.0E-01
108-88-3 Toluene 7.15 V -5.00E+00 1.0E+03 1.4E-03
76-13-1 Trichloro-1,2,2-trifluoroethane, 1,1,2-0.62 V - 5.00E+00 1.0E+03 1.2E-04
75-69-4 Trichlorofluoromethane 1.93 V - -
95-63-6 Trimethylbenzene, 1,2,4-5.77 V -6.00E-02 1.3E+01 9.2E-02
108-67-8 Trimethylbenzene, 1,3,5-0.865 V -6.00E-02 1.3E+01 1.4E-02
1330-20-7 Xylenes 9.83 V -1.00E-01 2.1E+01 9.4E-02
Cumulative: 7.8E-06 6.2E-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 - Non-Residential Worker Indoor Air
Version Date: January 2023
Basis: November 2022 EPA RSL Table
Site ID:
Exposure Unit ID: EU 5 - Adjusted
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 106 - -
71-43-2 Benzene 0.859 1.6E+00 2.6E+01 5.5E-07 6.5E-03
75-15-0 Carbon Disulfide 0.292 - 6.1E+02 9.5E-05
56-23-5 Carbon Tetrachloride 0.566 2.0E+00 8.8E+01 2.8E-07 1.3E-03
108-90-7 Chlorobenzene 0.107 - 4.4E+01 4.9E-04
74-87-3 Chloromethane 0.067 - 7.9E+01 1.7E-04
110-82-7 Cyclohexane 3 - 5.3E+03 1.1E-04
75-71-8 Dichlorodifluoromethane 3.02 - 8.8E+01 6.9E-03
156-60-5 Dichloroethylene, trans-1,2-4.35 - 3.5E+01 2.5E-02
141-78-6 Ethyl Acetate 2.76 - 6.1E+01 9.0E-03
100-41-4 Ethylbenzene 1.77 4.9E+00 8.8E+02 3.6E-07 4.0E-04
109-99-9 ~Tetrahydrofuran 3.58 - 1.8E+03 4.1E-04
142-82-5 Heptane, N- 3.5 - 3.5E+02 2.0E-03
110-54-3 Hexane, N-2.32 - 6.1E+02 7.6E-04
67-63-0 Isopropanol 5.13 - 1.8E+02 5.9E-03
78-93-3 Methyl Ethyl Ketone (2-Butanone)3.61 - 4.4E+03 1.6E-04
108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)1.12 - 2.6E+03 8.5E-05
75-09-2 Methylene Chloride 4.73 1.2E+03 5.3E+02 3.9E-09 1.8E-03
91-20-3 ~Naphthalene 0.183 3.6E-01 2.6E+00 5.1E-07 1.4E-02
115-07-1 Propylene 0.242 -2.6E+03 1.8E-05
100-42-5 Styrene 3.55 -8.8E+02 8.1E-04
127-18-4 Tetrachloroethylene 4.25 4.7E+01 3.5E+01 9.0E-08 2.4E-02
108-88-3 Toluene 7.15 -4.4E+03 3.3E-04
76-13-1 Trichloro-1,2,2-trifluoroethane, 1,1,2-0.62 -4.4E+03 2.8E-05
75-69-4 Trichlorofluoromethane 1.93 --
95-63-6 Trimethylbenzene, 1,2,4-5.77 -5.3E+01 2.2E-02
108-67-8 Trimethylbenzene, 1,3,5-0.865 -5.3E+01 3.3E-03
1330-20-7 Xylenes 9.83 -8.8E+01 2.2E-02
Cumulative: 1.8E-06 1.5E-01
All concentrations are in ug/m3
Output Form 3F
** - 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