23064_Dick Keffer Pontiac_VI Assessment Report and Review Letter_20220928

September 28, 2022
Sent Via E-mail William Morris Tapestry Tyvola, LLC 2 North 20th Street, Suite 700
Birmingham, AL 35203
[e-mail]
Subject: Review of Vapor Intrusion Assessment Report – First Semi-Annual Sampling Event Dick Keffer Pontiac Buick GMC
1001 Tyvola Road and 450 Minuet Lane Charlotte, Mecklenburg County Brownfields Project Number 23064-19-060
Dear Mr. Morris: The North Carolina Department of Environmental Quality (DEQ) Brownfields Program received and reviewed the September 13, 2022, Vapor Intrusion Assessment Report – First Semi-Annual Sampling Event (VI Report) submitted by Hart & Hickman for the above referenced Brownfields
Project. The VI Report summarizes the results of the first semi-annual sub-slab vapor sampling event conducted in accordance with the approved Vapor Intrusion Assessment Work Plan (VI Work Plan) dated June 3, 2022. DEQ Brownfields reviewed the VI Report and evaluated the analytical results using the DEQ
Risk Calculator (July 2022). The risk calculations are consistent with those provided in the VI Report and are below the thresholds for residential use. As such, DEQ Brownfields has determined that the VI Report complies with Land Use Restriction 12.h of the Notice of Brownfields Property recorded December 29, 2021.
In accordance with the approved VI Work Plan, the next semi-annual sub-slab vapor sampling event is scheduled for winter 2022.
Mr. William Morris September 28, 2022 Page 2

Be advised that this approval from the Brownfields Program does not waive any applicable
requirement to obtain any necessary permits, licenses, or certifications for the above referenced activities nor does it waive any requirement to comply with applicable law for such activities. If you have any questions, please feel free to contact me via e-mail at [e-mail].

Sincerely,
Peter L. Doorn Brownfields Project Manager
ec: Brett Lawrence, Hart & Hickman
Kevin Slaughter, NC DEQ Tracy Wahl, NC DEQ

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Vapor Intrusion Assessment Report First Semi-Annual Sampling Event
Dick Keffer Pontiac Buick GMC 1001 Tyvola Road and 450 Minuet Lane Charlotte, North Carolina Brownfields Project No.: 23064-19-060 H&H Job No. ARL-001

Table of Contents
Section Page No. 1.0 Introduction ............................................................................................................................ 1
1.1 Background Information....................................................................................................... 2
1.2 Previous Assessment Activities ............................................................................................ 2
2.0 Vapor Intrusion Assessment Activities ................................................................................ 7
2.1 Sub-Slab Soil Gas Sampling................................................................................................. 7
2.2 Sub-Slab Soil Gas Sample Analytical Results ..................................................................... 9
2.3 Vapor Intrusion Evaluation ................................................................................................ 10
3.0 Quality Assurance – Quality Control ................................................................................. 12
4.0 Summary and Conclusions.................................................................................................. 13
5.0 Sampling Schedule ............................................................................................................... 14

Table

Table 1 Summary of Sub-Slab Soil Gas Analytical Data

List of Figures

Figure 1 Site Location Map
Figure 2 Site and Sample Location Map

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List of Appendices

Appendix A Vapor Sampling Forms
Appendix B Laboratory Analytical Report
Appendix C DEQ Risk Calculators

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Vapor Intrusion Assessment Report First Semi-Annual Sampling Event
Dick Keffer Pontiac Buick GMC 1001 Tyvola Road and 450 Minuet Lane Charlotte, North Carolina Brownfields Project No.: 23064-19-060 H&H Job No. ARL-001

1.0 Introduction

On behalf of Tapestry Tyvola, LLC (Prospective Developer or PD), Hart & Hickman, PC (H&H)
has prepared this report to document vapor intrusion assessment activities conducted at the Dick
Keffer Pontiac Buick GMC Brownfields property located at 1001 Tyvola Road and 450 Minuet
Lane in Charlotte, Mecklenburg County, North Carolina (Site). The Site is in the North Carolina
Department of Environmental Quality (DEQ) Brownfields Program (Project Number: 23064-19-
060).

The Site consists of two contiguous parcels (Parcel Identification Numbers: 16908402 and
16908410) that total approximately 10.5 acres. The Site is being redeveloped with four multi-
family apartment buildings and associated amenities (Building 1 through Building 4), two public
streets, and surface parking. An unnamed tributary to Kings Branch traverses the northwest
portion of the Site. A Site location map is included as Figure 1.

A Notice of Brownfields Property, which includes a Brownfields Agreement, was recorded for the
Site at the Mecklenburg County Register of Deeds on December 29, 2021. The Land Use
Restriction (LUR) presented in paragraph 12.k. of the Brownfields Agreement generally states that
permanent sub-slab monitoring points are to be installed and sampled for a minimum of four
consecutive semi-annual events to evaluate the potential for vapor intrusion associated with the
newly constructed apartment buildings at the Site. This assessment was performed to comply with
paragraph 12.k. of the Brownfields Agreement, and included the installation and sampling of 16
permanent sub-slab soil gas monitoring points. This report also documents the methods and results

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of the first scheduled semi-annual sampling event conducted in summer 2022, prior to occupancy
of the Site buildings.

1.1 Background Information

The Site contained undeveloped or agricultural land and two residential outbuildings in the earliest
historical resource reviewed, a 1938 aerial photograph. The Site remained in this configuration
through the mid-1970s. In 1976, the central portion of the Site was developed with an automotive
dealership building that operated as Dick Keffer Pontiac Buick GMC. The automotive dealership
building included a sales showroom, sales offices, parts storage, wash bays, and a service garage.
In 1987, a smaller sales building was constructed in the southwestern portion of the Site. In 2005,
a building addition was constructed to the northern portion of the main dealership building and
used for auto body and painting operations. The Site operated as an automotive dealership under
several different names and most recently operated as Keffer Pre-Owned South. The Site has been
vacant since 2018, the former auto dealership buildings were razed in early 2021, and construction
of the existing apartment buildings began in late 2021.

1.2 Previous Assessment Activities

April 2019 Phase I ESA
H&H completed a Phase I Environmental Site Assessment (ESA) at the Site in April 2019 and
identified the following recognized environmental conditions (RECs) associated with the Site:

• the potential for impact to the Site from historical automotive service, repair, and
paint/body operations;
• the potential for impact to the Site associated with 23 in-ground hydraulic lifts located in
the former service garage;
• the potential for impact to the Site from an on-Site oil/water separator (OWS; and a second
OWS, which is now considered to be off-Site); and

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• the documented presence of groundwater impacts at nearby topographically upgradient
properties.
June 2019 Phase II ESA
H&H conducted Phase II ESA activities at the Site in June 2019 to evaluate the potential for impact
to the subject Site associated with the RECs identified during the April 2019 Phase I ESA and to
evaluate potential risks associated with future Site redevelopment. The Phase II ESA activities
included the collection of soil, groundwater, exterior and sub-slab soil gas samples from the Site.
A summary of the results of the Phase II ESA is provided below.

• The results of analysis of the groundwater samples indicated that 1,2-dichloroethane (1,2-
DCA) was detected at concentrations above the North Carolina 2L Groundwater Quality
Standard (2L Standard) in one background/upgradient well and one well located west of
the former service garage and paint/body shop. No other compounds were detected in the
groundwater samples at concentrations above 2L Standards and no compounds were
detected in the groundwater samples at concentrations above the Vapor Intrusion
Groundwater Screening Levels (GWSLs).

• Soil analytical results indicated that diesel range total petroleum hydrocarbons (TPH-DRO)
were detected at concentrations above the DEQ Action Level in nine of the 23 former in-
ground lift locations. The in-ground lifts and associated components were removed from
the Site in July 2019 by the Site owner at the time. However, petroleum-impacted soils
were left in place at the Site.

• The results of analysis of the soil samples also indicated the polycyclic aromatic
hydrocarbon (PAH) 1-methylnaphthalene was detected at an estimated concentration
slightly above the DEQ Protection of Groundwater Preliminary Soil Remediation Goal
(PSRG; 0.26 J mg/kg compared to 0.11 mg/kg). No compounds were detected in soil at
concentrations above the Residential or Commercial/Industrial PSRGs and background for
metals.

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• Laboratory analytical data of the exterior and sub-slab soil gas samples indicated that
perchloroethylene (PCE) was detected at concentrations in one sub-slab soil gas sample
(and its duplicate) collected from the southern portion of the former service garage at
concentrations above the Residential Soil Gas Screening Level (SGSL) but below the Non-
Residential SGSL. Additionally, naphthalene was detected in one sub-slab soil gas sample
located in the southern portion of the former paint/body shop, at a concentration slightly
above the Residential SGSL but below the Non-Residential SGSL.

• To further evaluate the detected compounds in the exterior and sub-slab soil gas samples,
H&H input the concentrations of the compounds detected in each sample into the DEQ
Risk Calculator. The results of the cumulative risk calculations indicated the potential
carcinogenic and non-carcinogenic risks associated with the exterior/sub-slab soil gas
detections were within the range of acceptable limits under both future residential and non-
residential use scenarios.

March 2020 Brownfields Assessment
The Site received eligibility into the DEQ Brownfields Program on February 10, 2020. On
February 24, 2020, a kick-off meeting was held at the Site with the DEQ Brownfields project
manager at the time to discuss historical uses at the Site, previous assessment activities, and data
gaps associated with current conditions at the Site in preparation for the multi-family development.
The Brownfields assessment activities were conducted at the Site to address the remaining data
gaps identified during the February 24, 2020 kick-off meeting. The Brownfields assessment
included the collection of soil, groundwater, exterior and sub-slab soil gas, sediment, and surface
water samples for laboratory analysis, and the completion of a receptor survey. A summary of the
results of the Brownfields assessment is provided below.

• Analytical results from a soil sample collected from the northwestern (historically
undeveloped) portion of the Site did not indicate impacts above PSRGs and background
for metals.

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• Analytical results of the soil samples collected from the former in-ground hydraulic lift
locations did not indicate impacts above PSRGs and background for metals.
Polychlorinated biphenyls (PCBs) were not detected in any of the former in-ground lift soil
samples.

• Analytical results of a groundwater sample (and duplicate) collected from a temporary well
located in the northwestern (historically undeveloped) portion of the Site did not indicate
impacts above 2L Standards or GWSLs.

• Laboratory analytical results indicated that no VOCs were detected in the sub-slab vapor
samples at concentrations above Residential SGSLs.

• Laboratory analytical results indicated that benzene was detected in one exterior soil gas
sample collected north of the former service garage at a concentration above the Residential
SGSL but below the Non-Residential SGSL. Additionally, 1,3-butadiene was detected in
two exterior soil gas samples collected from the northwest and southwest portions of Site
at concentrations above the Residential SGSL but below the Non-Residential SGSL. No
other VOCs were detected at concentrations above SGSLs in the exterior or sub-slab soil
gas samples.

• The DEQ Risk Calculator results of the exterior and sub-slab soil gas samples cumulative
risk calculations indicated the potential carcinogenic and non-carcinogenic risks associated
with the soil gas detections were within the range of acceptable limits under both future
residential and non-residential use scenarios.

• Methane gas was not detected in any of the exterior or sub-slab soil gas sample points.

• Laboratory analytical results did not indicate impacts to sediment in the on-Site unnamed
tributary above PSRGs and background for metals.

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• Laboratory analytical results indicated that VOCs and SVOCs were not detected in the
surface water samples at concentrations above laboratory method detection limits.
Additionally, the metals concentrations detected in the downstream tributary sample were
similar or lower than to those detected in the upstream tributary sample.

• The results of the receptor survey indicated that municipal water is supplied to the Site and
the surrounding area and that no private water supply wells or irrigation wells were
identified within the 1,500 ft of the Site. No schools, daycares, or structures with
basements were identified within 1,000 ft of the Site. Single family residences were
identified approximately 900 ft east of the Site. H&H identified underground municipal
water and sewer main lines, natural gas lines, and aboveground electric and cable lines
located within a 100-ft radius of the Site. The nearest surface water feature is the on-Site
unnamed tributary to Kings Branch (although not a National Wetlands Inventory [NWI]
mapped wetland feature).

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2.0 Vapor Intrusion Assessment Activities

The vapor intrusion assessment activities were performed in general accordance with DEQ’s
Inactive Hazardous Sites Branch (IHSB) Guidelines for Assessment and Cleanup (Guidelines)
dated July 2021, the DEQ DWM Vapor Intrusion Guidance dated March 2018, most recent
versions of the U.S. Environmental Protection Agency (EPA) Region IV Laboratory Services and
Applied Science Division (LSASD) guidance, and the DEQ-approved Vapor Intrusion Assessment
Work Plan dated June 3, 2022.

Prior to conducting field activities, H&H contacted North Carolina 811, the public utility locator,
to mark subsurface utilities at the Site. H&H also contracted with a private utility locator to mark
interior utilities which were not identified by the public locator. The private utility locator utilized
ground penetrating radar (GPR) survey techniques to identify and mark utilities near the sub-slab
soil gas monitoring point locations.

The sub-slab soil gas monitoring points were installed on June 23, 2022 and soil gas samples were
collected on July 18, 2022. A discussion of the methods, analytical results, and conclusions of the
vapor intrusion assessment activities are provided in the following sections. The sub-slab soil gas
monitoring point locations are depicted on Figure 2.

2.1 Sub-Slab Soil Gas Sampling

To further evaluate the potential for vapor intrusion associated with the newly constructed Site
buildings, H&H installed and sampled 16 permanent sub-slab soil gas monitoring points (SSV-1
through SSV-16). Four sub-slab soil gas monitoring points were installed in each Site building
(Building 1 through Building 4). The sub-slab monitoring points were installed using a rotary
hammer drill and 1½-inch diameter drill bit to advance a pilot hole into the concrete slab to a depth
of approximately 1¾ inches below the surface. A drill guide was then placed in the pilot hole, and
a 5/8-inch diameter drill bit was utilized to advance the boring through the concrete slab and

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approximately 6 inches into the underlying soil. Following concrete borehole advancement, loose
concrete cuttings were removed from each boring, and a Cox-Colvin Vapor Pin™ (vapor pin)
assembly (brass sampling point and silicone sleeve) was seated in the borehole using an
installation/extraction tool and dead blow hammer.

Each sub-slab soil gas sample was collected utilizing a laboratory supplied, batch-certified 3-liter
Summa® canister connected to an air-flow regulator calibrated by the laboratory to collect the
sample at a rate of approximately 100 milliliters per minute (ml/min). Prior to collection of the
soil gas samples, a “shut-in” test was conducted on the sampling train and helium leak checks were
conducted at each soil gas sampling point. The purpose of the shut-in test and helium leak check
was to ensure short circuiting with ambient air did not occur during sampling. A description of
the shut-in test and helium leak testing procedures is provided below.

The shut-in tests were conducted by connecting the flow regulator with the vacuum gauge to the
Summa® canister and sealing the flow regulator with the laboratory provided brass cap. Once the
sampling train was “closed”, the sample valve on the Summa® canister was opened and the
reading on the vacuum gauge was recorded. The Summa® canister sample valve was then closed,
and the vacuum gauge was observed to ensure no vacuum loss occurred. If the vacuum reading
remained the same, the shut-in test was considered successful. If vacuum loss occurs, the flow
regulator and/or brass cap was reseated, and the shut-in test was repeated until the vacuum reading
remained stable.

Following the shut-in test, the Summa® canister was connected to the sample point via Teflon®
sample tubing using a brass nut and ferrule assembly to create an airtight seal and a leak check
was performed. The leak check was performed by constructing a shroud over the sampling train
and flooding the shroud with helium gas. Helium concentrations inside the shroud were measured
using a helium gas detector and maintained at concentrations ranging from approximately 12% to
19%. Once helium concentrations stabilized within the shroud, the sample tubing was purged
outside of the shroud using a syringe and a three-way valve to collect purged soil gas into a Tedlar®
bag. The purged soil gas was then analyzed using the helium gas detector to ensure that helium

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concentrations in the soil gas sample were less than 10% of the helium concentrations measured
within the shroud. Each sub-slab soil gas sampling point passed the helium leak check criteria.
Soil gas sampling forms completed by field personnel are included in Appendix A.

Following successful leak checks, the sub-slab soil gas samples were collected by opening the
intake valve on the Summa® canister. Vacuum readings on the Summa® canister were recorded
prior to and following the sampling period to ensure adequate sample volume was collected. A
vacuum of approximately 5 inches of mercury or more was maintained within the canisters at the
conclusion of the sampling event in accordance with DEQ DWM guidance.

Following sample collection, the Summa® canisters were placed in laboratory supplied shipping
containers, properly labeled and shipped under standard chain-of-custody protocols to Con-Test
Analytical Laboratory (Con-Test), a nationally accredited laboratory for analysis of volatile
organic compounds (VOCs) by EPA Method TO-15. Upon receipt of the samples, the laboratory
recorded the final received vacuum pressure for each Summa canister which is documented in the
laboratory analytical report provided in Appendix B.

2.2 Sub-Slab Soil Gas Sample Analytical Results

A tabular summary of the sub-slab soil gas sample analytical results is provided as Table 1.
Laboratory analytical results for the soil gas samples were compared to DEQ DWM Residential
Vapor Intrusion Sub-Slab and Exterior Soil Gas Screening Levels (SGSLs) dated January 2022.
A copy of the laboratory analytical report and chain of custody record is provided in Appendix C.

Laboratory analytical results indicate the presence of the VOCs bromodichloromethane and
chloroform in multiple sub-slab samples at concentrations above the Residential SGSLs. No other
VOCs were detected at concentrations above the Residential SGSLs in the sub-slab soil gas
samples.

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Bromodichloromethane was detected in three sub-slab soil gas samples collected from Building 1
(SSV-13, SSV-14, and SSV-16) at concentrations ranging from 3.8 micrograms per cubic meter
(µg/m3) to 21 µg/m3, which are above the Residential SGSL of 2.5 µg/m3. No other sub-slab soil
gas samples contained bromodichloromethane detections above the Residential SGSL.

Chloroform was detected in multiple sub-slab soil gas samples corresponding to Building 1 (SSV-
13, SSV-14, and SSV-16), Building 2 (SSV-10 and SSV-12), and Building 4 (SSV-01, SSV-02,
and SSV-04) at concentrations ranging from 5.3 µg/m3 to 110 µg/m3, which is above the
Residential SGSL of 4.1 µg/m3. No other VOCs were detected at concentrations above the
Residential SGSLs in the sub-slab soil gas samples.

2.3 Vapor Intrusion Evaluation

DEQ DWM Vapor Intrusion SGSLs are very conservative and based upon a Target Cancer Risk
(TCR) of 1 x 10-6 for potential carcinogenic effects and a Target Hazard Quotient (THQ) of 0.2
for potential non-carcinogenic effects. Vapor intrusion mitigation or additional assessment is not
typically warranted if the calculated cumulative lifetime incremental carcinogenic risk (LICR) is
1 x 10-4 or less and the acceptable level for non-carcinogenic risk is a calculated cumulative hazard
index (HI) of 1.0 or less.

H&H utilized the DEQ Risk Calculator (January 2022) to further evaluate potential cumulative
risks for the soil gas to indoor air vapor intrusion pathway for the residential apartment buildings.
To model the potential for vapor intrusion under a hypothetical “worst-case” scenario per
apartment building, H&H conservatively calculated the cumulative risks using the highest
compound concentrations detected in each apartment building to model hypothetical “worst-case”
risks from the soil gas to indoor air vapor intrusion pathway. Risk calculator results are
summarized in the table below.

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Risk calculator results indicate that under a hypothetical worst-case scenario for the soil gas to
indoor air vapor intrusion pathway for each residential apartment building, the cumulative LICR
is less than 1 x 10-4 and the cumulative HI is less than 1 indicating that the risk of potential vapor
intrusion for the Site buildings is at acceptable levels. Copies of the completed risk calculators are
provided in Appendix C.

Evaluation Area Land Use Scenario
Calculated Cumulative LICR
Calculated Cumulative HI
Exceedance of Acceptable Levels? Building 1 Residential 3.5 x 10-5 0.058 No
Building 2 Residential 2.1 x 10-6 0.12 No
Building 3 Residential 1.7 x 10-6 0.029 No Building 4 Residential 5.2 x 10-6 0.014 No

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3.0 Quality Assurance – Quality Control

For quality assurance and quality control purposes (QA/QC), H&H collected a duplicate sub-slab
soil gas sample for VOC analysis from the SSV-15 (Building 1) sample location using a laboratory
supplied “T-sampler” which allows for collection of two soil gas samples from the same location
simultaneously. The duplicate sub-slab soil gas sample was submitted for laboratory analysis of
VOCs by EPA Method TO-15 (the same laboratory analysis as the parent sample). As indicated
in Table 1, the data indicate good correlation between the duplicate and the SSV-15 parent sample.

Laboratory QA/QC procedures were employed to ensure appropriate sample handling and analysis
and to aid in the review and validation of the analytical data. QA/QC procedures were conducted
in accordance with the method protocols and included regular equipment maintenance, equipment
calibrations, and adherence to specific sample custody and data management procedures. Samples
were analyzed in conjunction with appropriate blanks, laboratory duplicates, continuing
calibration standards, surrogate standards, and matrix spiking standards in accordance with
approved methodologies to monitor both instrument and analyst performance. The laboratory
included estimated concentrations for compounds that were detected at levels above the laboratory
method detection limit, but below the laboratory reporting limit (J Flags) for indoor air and sub-
slab analytical results.

The laboratory analytical data report and QA package for each group of samples submitted to and
analyzed by the subcontracted laboratory is provided in Appendix B. The laboratory analytical
report contains some data qualifiers which are described in Appendix B; however, none appear to
affect the quality of the data and the samples were received by the laboratory in good condition
and analyzed within holding times.

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4.0 Summary and Conclusions

H&H has completed vapor intrusion assessment activities at the former Dick Keffer Pontiac Buick
GMC Brownfields property located at 1001 Tyvola Road and 450 Minuet Lane in Charlotte,
Mecklenburg County, North Carolina. The assessment activities were conducted to further
evaluate potential vapor intrusion risks associated with four residential apartment buildings
(Building 1 through Building 4) at the Site and to comply with paragraph 12.k. of the Brownfields
Agreement. The Brownfields assessment activities included the installation and sampling of 16
permanent sub-slab soil gas monitoring points. A summary of the results of the vapor intrusion
assessment activities is provided below.

• Laboratory analytical results indicate that two VOCs (bromodichloromethane and
chloroform) were detected in select sub-slab soil gas samples at concentrations above
Residential SGSLs.

• To further evaluate the detected VOCs, H&H input the highest compound concentrations
detected in each of the four Site buildings into the DEQ Risk Calculator (January 2022) to
simulate a hypothetical, cumulative “worst-case” scenario for each residential apartment
building. Results of the worst-case risk calculations indicate acceptable carcinogenic and
non-carcinogenic risks for each residential apartment building at the Site.

• Comparison of the recently collected sub-slab soil gas sample data to previous soil gas
assessment results (conducted in June 2019 and March 2020) indicate that VOC
concentrations in soil gas at the Site appear to be generally stable or decreasing with time.

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5.0 Sampling Schedule

Per paragraph 12.k. of the Brownfields Agreement, a minimum of four consecutive semi-annual
sampling events are to be conducted. The semi-annual sampling schedule is to include both warm
and cold weather sampling events. This report documents the methods and results of the first
scheduled sampling event conducted in summer 2022, prior to occupancy of the Site buildings.
The next scheduled sampling event will be conducted in winter 2022. Subsequent scheduled
sampling events will be conducted in summer 2023 and winter 2023.

Table
Table 1 Summary of Sub-Slab Soil Gas Analytical DataDick Keffer Pontiac Buick GMC Brownfields SiteCharlotte, North CarolinaH&H Job No. ARL-001Evaluation AreaScreening CriteriaSample IDSSV-13 SSV-14 SSV-16 SSV-09 SSV-10 SSV-11 SSV-12 SSV-05 SSV-06 SSV-07 SSV-08 SSV-01 SSV-02 SSV-03 SSV-04Sample DateUnitsVOCs (TO-15)Acetone620 12 J 19 J 27 24<1118 J 14 J 12 J<11 <11 <11 <11 <11 <11 <11 <11NEBenzene 0.58 J<0.48 <0.48 <0.48 <0.48 <0.48 <0.48 <0.48 <0.484.7<0.488.6<0.48 <0.48 <0.48 <0.48 <0.4812Bromodichloromethane3.8 8.0<0.94 <0.9421<0.94 <0.94 <0.94 <0.94 <0.94 <0.94 <0.94 <0.94 <0.94 <0.94 <0.94 <0.942.52-Butanone (MEK) 54<6.3 <6.3 <6.3 <6.3 <6.3 <6.3 <6.3 <6.3 <6.3 <6.316 J<6.3 <6.3 <6.3 <6.3 <6.335,000Carbon Disulfide 2.6 J 4.2 J 2.5 J 2.5 J 4.2 J 3.0 J 9.7 15 3.8 J<0.582.4 J 1.3 J 2.3 J 1.3 J 1.1 J 2.3 J 3.2 J 4,900Chloroethane<0.47 <0.47 <0.47 <0.47 <0.47 <0.47 <0.47 <0.47 <0.472.3<0.47 <0.47 <0.47 <0.47 <0.47 <0.47 <0.4728,000Chloroform21 691.3 1.41101.15.3<0.936.5<0.93 <0.93 <0.933.921 5.72.05.34.1Chloromethane 0.76 J 1.1<0.33 <0.33 <0.33 <0.33 <0.33 <0.33 <0.332.6<0.33 <0.330.50 J 0.88<0.331.1<0.33630Cyclohexane<0.42 <0.42 <0.42 <0.42 <0.42 <0.42 <0.42 <0.42 <0.429.9<0.4210<0.42 <0.42 <0.42 <0.42 <0.4242,000Dibromochloromethane<1.1 <1.1 <1.1 <1.12.7<1.1 <1.1 <1.1 <1.1 <1.1 <1.1 <1.1 <1.1 <1.1 <1.1 <1.1 <1.1NE1,3-Dichlorobenzene<0.67 <0.670.67 J 0.70 J<0.670.99 J<0.670.89 J 0.99 J<0.67 <0.67 <0.67 <0.67 <0.670.75 J<0.671.9 NEDichlorodifluoromethane 1.8 1.8 1.8 1.8 1.7 2.0 1.9 1.9 1.8 1.8 1.8 2.0 1.9 1.7 2.3 1.9 1.9 7001,4-Dioxane<0.60 <0.60 <0.60 <0.60 <0.60 <0.60 <0.60 <0.600.97 J<0.60 <0.60 <0.60 <0.60 <0.60 <0.60 <0.60 <0.6019Ethanol 170<6.690 110 7.6 J<6.6 <6.612 J 10.0 J 7.6 J 11 J 16<6.618<6.67.3 J<6.6NEEthylbenzene 1.3<0.51 <0.51 <0.51 <0.510.59 J 0.76 J 0.68 J 0.82 J 0.69 J<0.510.61 J<0.510.96<0.510.56 J<0.51374-Ethyltoluene 1.4<0.60 <0.60 <0.60 <0.60 <0.60 <0.60 <0.60 <0.60 <0.60 <0.60 <0.60 <0.601.3<0.60 <0.60 <0.60NEHexane<3.7 <3.7 <3.7 <3.7 <3.7 <3.7 <3.7 <3.7 <3.722 J<3.732<3.7 <3.7 <3.7 <3.7 <3.74,900Isopropanol 11 J<3.4 <3.44.5 J<3.4 <3.4 <3.4 <3.4 <3.4 <3.425<3.4 <3.44.7 J<3.4 <3.4 <3.41,400Methyl tert-Butyl Ether (MTBE)<0.56 <0.56 <0.56 <0.56 <0.56 <0.561.3<0.56 <0.56 <0.56 <0.56 <0.56 <0.56 <0.56 <0.56 <0.56 <0.56360Methylene Chloride<3.2 <3.2 <3.2 <3.2 <3.2 <3.24.8 J<3.2 <3.2 <3.2 <3.2 <3.2 <3.2 <3.2 <3.2 <3.2 <3.23,4004-Methyl-2-pentanone (MIBK) 3.1<0.44 <0.440.62 J<0.44 <0.44 <0.44 <0.44 <0.44 <0.44 <0.44 <0.44 <0.44 <0.44 <0.44 <0.44 <0.4421,000Propene<3.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.03.2 J<3.0 <3.0 <3.0 <3.0 <3.0 <3.0 <3.021,000Styrene 0.68 J<0.45 <0.45 <0.45 <0.45 <0.45 <0.45 <0.45 <0.45 <0.45 <0.45 <0.45 <0.450.55 J<0.450.73 J<0.457,000Tetrachloroethylene 4.6 3.5 17 18 2.1 84 160 8.4 36<1.02.9 <1.03.6 1.7<1.01.3 J<1.0280Tetrahydrofuran 180 2.1 J 5.3 J 7.0 15<0.971.7 J<0.972.5 J<0.97 <0.97470 26<0.97 <0.97 <0.971.4 J 14,000Toluene 8.5 1.3 2.3 2.5 1.8 3.0 2.5 2.8 2.3 4.9 2.1 10 2.2 5.4 2.1 3.0 2.3 35,000Trichlorofluoromethane 8.7 6.9 1.9 J 2.0 J 4.0 J 31 2.5 J 1.6 J 2.7 J 1.4 J 2.0 J 1.4 J 2.1 J 1.7 J 2.4 J 1.9 J 1.7 J NE1,1,2-Trichloro-1,2,2-trifluoroethane <1.7 <1.7 <1.7 <1.7 <1.7 <1.7 <1.7 <1.7 <1.7 <1.7 <1.7 <1.7 <1.7 <1.73.3 J<1.7 <1.735,0001,2,4-Trimethylbenzene 8.2 2.9 2.9 2.9 3.3 4.1 2.9 4.1 4.8 3.7 1.1 2.6 2.5 5.5 4.1 4.1 2.6 4201,3,5-Trimethylbenzene 1.3<0.52 <0.52 <0.52 <0.520.55 J<0.52 <0.520.53 J 0.61 J<0.52 <0.52 <0.521.2<0.52 <0.52 <0.52420m&p-Xylene 5.5<0.971.4 J 1.4 J 1.5 J 2.5 2.5 2.9 3.3 2.9 1.1 J 2.2 1.6 J 3.9 1.5 J 2.0 1.5 J 700o-Xylene2.6 0.45 J 0.69 J 0.73 J 0.73 J 1.1 1.5 1.1 1.41.8 0.59 J 1.1 0.76 J 1.9 0.73 J 1.0 0.73 J 700DEQ Cumulative Risk Calculator(2)Acceptable Risk LevelsLICR (Worst-Case)<1.0 x 10-4Non-Carcinogenic HI (Worst-Case)<1.0Notes:1) North Carolina Department of Environmental Quality (DEQ) Division of Waste Management (DWM) Vapor Intrusion Sub-Slab & Exterior Soil Gas Screening Levels (SGSLs) dated July 2022.2) DEQ DWM Cumulative Risk Calculator dated July 2022 and is based up on a TCR = 1 x 10-6 and THQ = 0.2.Compound concentrations are reported to the laboratory method detection limits.Laboratory analytical method is shown in parentheses. Only compounds detected in at least one sample are shown in the above table.Bold values indicate an exceedance of DWM Residential SGSL. Cumulative LICR and HI calculated using the highest concentration of any compound detected in each apartment building. Results are compared to DEQ and EPA acceptable risk levels for carcinogenic and non carcinogenic risks.VOCs = volatile organic compounds; NE = not established; TCR = Target Cancer Risk; THQ = Target Hazard Quotient; LICR = Lifetime Incremental Cancer Risk; HI = Hazard IndexJ = Compound was detected above the laboratory method detection limit, but below the laboratory reporting limit resulting in a laboratory estimated concentration.7/18/2022µg/m3Building 1Building 3Building 4Building 2Residential SGSLs (1)SSV-15 / DUP-017/18/20227/18/20227/18/20220.0580.0290.0140.123.5 x 10-51.7 x 10-65.2 x 10-62.1 x 10-6https://harthick.sharepoint.com/sites/MasterFiles‐1/Shared Documents/AAA‐Master Projects/Arlington Properties (ARL)/ARL‐001 Dick Keffer Brownfields/Vapor Assessment/Tables and Risk Calc/Sub‐Slab Vapor Data Table9/13/2022Table 1 (Page 1 of 1)Hart & Hickman, PC

Figures
USGS The National Map: National Boundaries Dataset, 3DEP ElevationProgram, Geographic Names Information System, National HydrographyDataset, National Land Cover Database, National Structures Dataset, andNational Transportation Dataset; USGS Global Ecosystems; U.S. CensusBureau TIGER/Line data; USFS Road Data; Natural Earth Data; U.S.Department of State Humanitarian Information Unit; and NOAA NationalCenters for Environmental Information, U.S. Coastal Relief Model. Datarefreshed August, 2021.
SITE LOCATION MAP
DICK KEFFER BROWNFIELDS SITE1001 TYVOLA ROAD & 450 MINUET LANECHARLOTTE, NORTH CAROLINA
DATE: 3-7-22
JOB NO: ARL-001
REVISION NO: 0
FIGURE NO: 1
2923 South Tryon Street - Suite 100Charlotte, North Carolina 28203704-586-0007 (p) 704-586-0373 (f)License # C-1269 / # C-245 Geology
TITLE
PROJECT
0 2,000 4,000
SCALE IN FEET
SITE
Path: S:\AAA-Master Projects\Arlington Properties (ARL)\ARL-001 Dick Keffer Brownfields\Figures\Figure-1.mxdN
U.S.G.S. QUADRANGLE MAP
CHARLOTTE WEST, NORTH CAROLINA 2019
QUADRANGLE7.5 MINUTE SERIES (TOPOGRAPHIC)
REVISION NO. 0
JOB NO. ARL-001
DATE: 9-12-22
FIGURE NO. 2
DICK KEFFER BROWNFIELDS SITE
1001 TYVOLA ROAD AND 450 MINUET LANE
CHARLOTTE, NORTH CAROLINA
SITE AND SAMPLE LOCATION MAP
LEGEND
PROPERTY BOUNDARY
PARCEL BOUNDARY
RAILROAD
FENCE LINE
BUILDING FOOTPRINT
SUB-SLAB SAMPLE LOCATION
2923 South Tryon Street-Suite 100
Charlotte, North Carolina 28203
704-586-0007(p) 704-586-0373(f)
License # C-1269 / #C-245 Geology
NOTES:
1. BASE MAP OBTAINED FROM CAROLINA SURVEYORS,
INC. PROPERTY SURVEY DATED 12/10/2018.
TYVOLA ROAD OLD PINEVILLE ROADSSV-01
SSV-03
SSV-05
SSV-08
SSV-09
SSV-13
SSV-15
MINU
E
T
L
A
N
E
SSV-02
SSV-04
SSV-06
SSV-07
SSV-10
SSV-11
SSV-12
SSV-14 SSV-16
BUILDING 4
BUILDING 1
BUILDING 2
BUILDING 3
S:\AAA-Master Projects\Arlington Properties (ARL)\ARL-001 Dick Keffer Brownfields\Figures\Vapor Assessment\Sample Loc Map 20220713.dwg, FIG 2 -SAMPLES, 9/12/2022 10:04:53 AM, sperry

Appendix A Vapor Sampling Forms
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Appendix B Laboratory Analytical Report
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
July 27, 2022
Brett Lawrence
Hart & Hickman - Charlotte, NC
2923 South Tryon Street, Suite 100
Charlotte, NC 28203
Project Location: Charlotte, NC
Client Job Number:
Project Number: ARL-001
Laboratory Work Order Number: 22G1156
Enclosed are results of analyses for samples as received by the laboratory on July 20, 2022. If you have any questions
concerning this report, please feel free to contact me.
Sincerely,
Kerry K. McGee
Project Manager
QA Officer
Katherine Allen
Laboratory Manager
Daren Damboragian
Page 1 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL SUMMARY
7/27/2022Hart & Hickman - Charlotte, NC
2923 South Tryon Street, Suite 100
Charlotte, NC 28203
ATTN: Brett Lawrence
ARL-001
22G1156
The results of analyses performed on the following samples submitted to Con-Test, a Pace Analytical Laboratory, are found in this report.
PROJECT LOCATION:
PURCHASE ORDER NUMBER:
PROJECT NUMBER:
REPORT DATE:
WORK ORDER NUMBER:
FIELD SAMPLE #LAB ID:MATRIX TESTSAMPLE DESCRIPTION SUB LAB
Charlotte, NC
ARL-001
SSV-16 22G1156-01 Sub Slab -
EPA TO-15
SSV-15 22G1156-02 Sub Slab -
EPA TO-15
SSV-03 22G1156-03 Sub Slab -
EPA TO-15
SSV-10 22G1156-04 Sub Slab -
EPA TO-15
SSV-02 22G1156-05 Sub Slab -
EPA TO-15
SSV-11 22G1156-06 Sub Slab -
EPA TO-15
SSV-09 22G1156-07 Sub Slab -
EPA TO-15
SSV-12 22G1156-08 Sub Slab -
EPA TO-15
DUP-01 22G1156-09 Sub Slab -
EPA TO-15
SSV-07 22G1156-10 Sub Slab -
EPA TO-15
SSV-08 22G1156-11 Sub Slab -
EPA TO-15
SSV-05 22G1156-12 Sub Slab -
EPA TO-15
SSV-01 22G1156-13 Sub Slab -
EPA TO-15
SSV-06 22G1156-14 Sub Slab -
EPA TO-15
SSV-04 22G1156-15 Sub Slab -
EPA TO-15
SSV-14 22G1156-16 Sub Slab -
EPA TO-15
SSV-13 22G1156-17 Sub Slab -
EPA TO-15
Page 2 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
CASE NARRATIVE SUMMARY
All reported results are within defined laboratory quality control objectives unless listed below or otherwise qualified in this report.
The results of analyses reported only relate to samples submitted to Con-Test, a Pace Analytical Laboratory, for testing.
I certify that the analyses listed above, unless specifically listed as subcontracted, if any, were performed under my direction according to the approved methodologies listed
in this document, and that based upon my inquiry of those individuals immediately responsible for obtaining the information, the material contained in this report is, to the
best of my knowledge and belief, accurate and complete.
Lisa A. Worthington
Technical Representative
Page 3 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-16
Sample ID: 22G1156-01
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -30
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -7.4
Sampled: 7/18/2022 10:45
Canister ID: 2754
Flow Controller ID: 4343
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Acetone 10 8.0 7/25/22 14:04 BRF24 4194.8 11
Benzene ND 0.20 7/25/22 14:04 BRFND40.640.15 0.48
Benzyl chloride ND 0.20 7/25/22 14:04 BRFND41.00.18 0.91
Bromodichloromethane 3.1 0.20 7/25/22 14:04 BRF21 41.30.14 0.94
Bromoform ND 0.20 7/25/22 14:04 BRFND42.10.14 1.4
Bromomethane ND 0.20 7/25/22 14:04 BRFND40.780.13 0.52
1,3-Butadiene ND 0.20 7/25/22 14:04 BRFND40.440.17 0.37
2-Butanone (MEK)ND 8.0 7/25/22 14:04 BRFND4242.1 6.3
Carbon Disulfide 1.4 2.0 7/25/22 14:04 BRFJ4.2 46.20.18 0.58
Carbon Tetrachloride ND 0.20 7/25/22 14:04 BRFND41.30.16 1.0
Chlorobenzene ND 0.20 7/25/22 14:04 BRFND40.920.13 0.61
Chloroethane ND 0.20 7/25/22 14:04 BRFND40.530.18 0.47
Chloroform 23 0.20 7/25/22 14:04 BRF110 40.980.19 0.93
Chloromethane ND 0.40 7/25/22 14:04 BRFND40.830.16 0.33
Cyclohexane ND 0.20 7/25/22 14:04 BRFND40.690.12 0.42
Dibromochloromethane 0.32 0.20 7/25/22 14:04 BRF2.7 41.70.13 1.1
1,2-Dibromoethane (EDB)ND 0.20 7/25/22 14:04 BRFND41.50.12 0.93
1,2-Dichlorobenzene ND 0.20 7/25/22 14:04 BRFND41.20.11 0.69
1,3-Dichlorobenzene ND 0.20 7/25/22 14:04 BRFND41.20.11 0.67
1,4-Dichlorobenzene ND 0.20 7/25/22 14:04 BRFND41.20.13 0.79
Dichlorodifluoromethane (Freon 12)0.34 0.20 7/25/22 14:04 BRF1.7 40.990.20 0.97
1,1-Dichloroethane ND 0.20 7/25/22 14:04 BRFND40.810.17 0.71
1,2-Dichloroethane ND 0.20 7/25/22 14:04 BRFND40.810.18 0.73
1,1-Dichloroethylene ND 0.20 7/25/22 14:04 BRFND40.790.15 0.60
cis-1,2-Dichloroethylene ND 0.20 7/25/22 14:04 BRFND40.790.15 0.58
trans-1,2-Dichloroethylene ND 0.20 7/25/22 14:04 BRFND40.790.16 0.62
1,2-Dichloropropane ND 0.20 7/25/22 14:04 BRFND40.920.11 0.50
cis-1,3-Dichloropropene ND 0.20 7/25/22 14:04 BRFND40.910.10 0.47
trans-1,3-Dichloropropene ND 0.20 7/25/22 14:04 BRFND40.910.10 0.46
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)ND 0.20 7/25/22 14:04 BRFND41.40.20 1.4
1,4-Dioxane ND 2.0 7/25/22 14:04 BRFND47.20.17 0.60
Ethanol 4.0 8.0 7/25/22 14:04 BRFJ7.6 4153.5 6.6
Ethyl Acetate ND 2.0 7/25/22 14:04 BRFND47.21.0 3.6
Ethylbenzene ND 0.20 7/25/22 14:04 BRFND40.870.12 0.51
4-Ethyltoluene ND 0.20 7/25/22 14:04 BRFND40.980.12 0.60
Heptane ND 0.20 7/25/22 14:04 BRFND40.820.13 0.52
Hexachlorobutadiene ND 0.20 7/25/22 14:04 BRFND42.10.16 1.8
Hexane ND 8.0 7/25/22 14:04 BRFND4281.0 3.7
2-Hexanone (MBK)ND 0.20 7/25/22 14:04 BRFND40.820.10 0.41
Isopropanol ND 8.0 7/25/22 14:04 BRFND4201.4 3.4
Methyl tert-Butyl Ether (MTBE)ND 0.20 7/25/22 14:04 BRFND40.720.15 0.56
Methylene Chloride ND 2.0 7/25/22 14:04 BRFND46.90.93 3.2
4-Methyl-2-pentanone (MIBK)ND 0.20 7/25/22 14:04 BRFND40.820.11 0.44
Naphthalene ND 0.20 7/25/22 14:04 BRFND41.00.15 0.79
Propene ND 8.0 7/25/22 14:04 BRFND4141.8 3.0
Styrene ND 0.20 7/25/22 14:04 BRFND40.850.11 0.45
1,1,2,2-Tetrachloroethane ND 0.20 7/25/22 14:04 BRFND41.40.11 0.74
Page 4 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-16
Sample ID: 22G1156-01
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -30
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -7.4
Sampled: 7/18/2022 10:45
Canister ID: 2754
Flow Controller ID: 4343
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Tetrachloroethylene 0.31 0.20 7/25/22 14:04 BRF2.1 41.40.15 1.0
Tetrahydrofuran 5.0 2.0 7/25/22 14:04 BRF15 45.90.33 0.97
Toluene 0.49 0.20 7/25/22 14:04 BRF1.8 40.750.11 0.43
1,2,4-Trichlorobenzene ND 0.20 7/25/22 14:04 BRFND41.50.19 1.4
1,1,1-Trichloroethane ND 0.20 7/25/22 14:04 BRFND41.10.16 0.86
1,1,2-Trichloroethane ND 0.20 7/25/22 14:04 BRFND41.10.14 0.77
Trichloroethylene ND 0.20 7/25/22 14:04 BRFND41.10.13 0.72
Trichlorofluoromethane (Freon 11)0.71 0.80 7/25/22 14:04 BRFJ4.0 44.50.24 1.3
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)ND 0.80 7/25/22 14:04 BRFND46.10.22 1.7
1,2,4-Trimethylbenzene 0.67 0.20 7/25/22 14:04 BRF3.3 40.980.088 0.43
1,3,5-Trimethylbenzene ND 0.20 7/25/22 14:04 BRFND40.980.11 0.52
Vinyl Acetate ND 4.0 7/25/22 14:04 BRFND4141.1 3.8
Vinyl Chloride ND 0.20 7/25/22 14:04 BRFND40.510.18 0.46
m&p-Xylene 0.34 0.40 7/25/22 14:04 BRFJ1.5 41.70.22 0.97
o-Xylene 0.17 0.20 7/25/22 14:04 BRFJ0.73 40.870.10 0.44
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1)95.5 7/25/22 14:0470-130
Page 5 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-15
Sample ID: 22G1156-02
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -28
Final Vacuum(in Hg): -6
Receipt Vacuum(in Hg): -7.7
Sampled: 7/18/2022 11:55
Canister ID: 2585
Flow Controller ID: 4289
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Acetone 7.9 8.0 7/25/22 14:45 BRFJ19 4194.8 11
Benzene ND 0.20 7/25/22 14:45 BRFND40.640.15 0.48
Benzyl chloride ND 0.20 7/25/22 14:45 BRFND41.00.18 0.91
Bromodichloromethane ND 0.20 7/25/22 14:45 BRFND41.30.14 0.94
Bromoform ND 0.20 7/25/22 14:45 BRFND42.10.14 1.4
Bromomethane ND 0.20 7/25/22 14:45 BRFND40.780.13 0.52
1,3-Butadiene ND 0.20 7/25/22 14:45 BRFND40.440.17 0.37
2-Butanone (MEK)ND 8.0 7/25/22 14:45 BRFND4242.1 6.3
Carbon Disulfide 0.79 2.0 7/25/22 14:45 BRFJ2.5 46.20.18 0.58
Carbon Tetrachloride ND 0.20 7/25/22 14:45 BRFND41.30.16 1.0
Chlorobenzene ND 0.20 7/25/22 14:45 BRFND40.920.13 0.61
Chloroethane ND 0.20 7/25/22 14:45 BRFND40.530.18 0.47
Chloroform 0.27 0.20 7/25/22 14:45 BRF1.3 40.980.19 0.93
Chloromethane ND 0.40 7/25/22 14:45 BRFND40.830.16 0.33
Cyclohexane ND 0.20 7/25/22 14:45 BRFND40.690.12 0.42
Dibromochloromethane ND 0.20 7/25/22 14:45 BRFND41.70.13 1.1
1,2-Dibromoethane (EDB)ND 0.20 7/25/22 14:45 BRFND41.50.12 0.93
1,2-Dichlorobenzene ND 0.20 7/25/22 14:45 BRFND41.20.11 0.69
1,3-Dichlorobenzene 0.11 0.20 7/25/22 14:45 BRFJ0.67 41.20.11 0.67
1,4-Dichlorobenzene ND 0.20 7/25/22 14:45 BRFND41.20.13 0.79
Dichlorodifluoromethane (Freon 12)0.37 0.20 7/25/22 14:45 BRF1.8 40.990.20 0.97
1,1-Dichloroethane ND 0.20 7/25/22 14:45 BRFND40.810.17 0.71
1,2-Dichloroethane ND 0.20 7/25/22 14:45 BRFND40.810.18 0.73
1,1-Dichloroethylene ND 0.20 7/25/22 14:45 BRFND40.790.15 0.60
cis-1,2-Dichloroethylene ND 0.20 7/25/22 14:45 BRFND40.790.15 0.58
trans-1,2-Dichloroethylene ND 0.20 7/25/22 14:45 BRFND40.790.16 0.62
1,2-Dichloropropane ND 0.20 7/25/22 14:45 BRFND40.920.11 0.50
cis-1,3-Dichloropropene ND 0.20 7/25/22 14:45 BRFND40.910.10 0.47
trans-1,3-Dichloropropene ND 0.20 7/25/22 14:45 BRFND40.910.10 0.46
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)ND 0.20 7/25/22 14:45 BRFND41.40.20 1.4
1,4-Dioxane ND 2.0 7/25/22 14:45 BRFND47.20.17 0.60
Ethanol 48 8.0 7/25/22 14:45 BRF90 4153.5 6.6
Ethyl Acetate ND 2.0 7/25/22 14:45 BRFND47.21.0 3.6
Ethylbenzene ND 0.20 7/25/22 14:45 BRFND40.870.12 0.51
4-Ethyltoluene ND 0.20 7/25/22 14:45 BRFND40.980.12 0.60
Heptane ND 0.20 7/25/22 14:45 BRFND40.820.13 0.52
Hexachlorobutadiene ND 0.20 7/25/22 14:45 BRFND42.10.16 1.8
Hexane ND 8.0 7/25/22 14:45 BRFND4281.0 3.7
2-Hexanone (MBK)ND 0.20 7/25/22 14:45 BRFND40.820.10 0.41
Isopropanol ND 8.0 7/25/22 14:45 BRFND4201.4 3.4
Methyl tert-Butyl Ether (MTBE)ND 0.20 7/25/22 14:45 BRFND40.720.15 0.56
Methylene Chloride ND 2.0 7/25/22 14:45 BRFND46.90.93 3.2
4-Methyl-2-pentanone (MIBK)ND 0.20 7/25/22 14:45 BRFND40.820.11 0.44
Naphthalene ND 0.20 7/25/22 14:45 BRFND41.00.15 0.79
Propene ND 8.0 7/25/22 14:45 BRFND4141.8 3.0
Styrene ND 0.20 7/25/22 14:45 BRFND40.850.11 0.45
1,1,2,2-Tetrachloroethane ND 0.20 7/25/22 14:45 BRFND41.40.11 0.74
Page 6 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-15
Sample ID: 22G1156-02
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -28
Final Vacuum(in Hg): -6
Receipt Vacuum(in Hg): -7.7
Sampled: 7/18/2022 11:55
Canister ID: 2585
Flow Controller ID: 4289
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Tetrachloroethylene 2.6 0.20 7/25/22 14:45 BRF17 41.40.15 1.0
Tetrahydrofuran 1.8 2.0 7/25/22 14:45 BRFJ5.3 45.90.33 0.97
Toluene 0.62 0.20 7/25/22 14:45 BRF2.3 40.750.11 0.43
1,2,4-Trichlorobenzene ND 0.20 7/25/22 14:45 BRFND41.50.19 1.4
1,1,1-Trichloroethane ND 0.20 7/25/22 14:45 BRFND41.10.16 0.86
1,1,2-Trichloroethane ND 0.20 7/25/22 14:45 BRFND41.10.14 0.77
Trichloroethylene ND 0.20 7/25/22 14:45 BRFND41.10.13 0.72
Trichlorofluoromethane (Freon 11)0.34 0.80 7/25/22 14:45 BRFJ1.9 44.50.24 1.3
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)ND 0.80 7/25/22 14:45 BRFND46.10.22 1.7
1,2,4-Trimethylbenzene 0.60 0.20 7/25/22 14:45 BRF2.9 40.980.088 0.43
1,3,5-Trimethylbenzene ND 0.20 7/25/22 14:45 BRFND40.980.11 0.52
Vinyl Acetate ND 4.0 7/25/22 14:45 BRFND4141.1 3.8
Vinyl Chloride ND 0.20 7/25/22 14:45 BRFND40.510.18 0.46
m&p-Xylene 0.32 0.40 7/25/22 14:45 BRFJ1.4 41.70.22 0.97
o-Xylene 0.16 0.20 7/25/22 14:45 BRFJ0.69 40.870.10 0.44
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1)95.1 7/25/22 14:4570-130
Page 7 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-03
Sample ID: 22G1156-03
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -28
Final Vacuum(in Hg): -6
Receipt Vacuum(in Hg): -6.8
Sampled: 7/18/2022 15:30
Canister ID: 2580
Flow Controller ID: 4121
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Acetone ND 8.0 7/25/22 16:07 BRFND4194.8 11
Benzene ND 0.20 7/25/22 16:07 BRFND40.640.15 0.48
Benzyl chloride ND 0.20 7/25/22 16:07 BRFND41.00.18 0.91
Bromodichloromethane ND 0.20 7/25/22 16:07 BRFND41.30.14 0.94
Bromoform ND 0.20 7/25/22 16:07 BRFND42.10.14 1.4
Bromomethane ND 0.20 7/25/22 16:07 BRFND40.780.13 0.52
1,3-Butadiene ND 0.20 7/25/22 16:07 BRFND40.440.17 0.37
2-Butanone (MEK)ND 8.0 7/25/22 16:07 BRFND4242.1 6.3
Carbon Disulfide 0.72 2.0 7/25/22 16:07 BRFJ2.3 46.20.18 0.58
Carbon Tetrachloride ND 0.20 7/25/22 16:07 BRFND41.30.16 1.0
Chlorobenzene ND 0.20 7/25/22 16:07 BRFND40.920.13 0.61
Chloroethane ND 0.20 7/25/22 16:07 BRFND40.530.18 0.47
Chloroform 0.40 0.20 7/25/22 16:07 BRF2.0 40.980.19 0.93
Chloromethane 0.54 0.40 7/25/22 16:07 BRF1.1 40.830.16 0.33
Cyclohexane ND 0.20 7/25/22 16:07 BRFND40.690.12 0.42
Dibromochloromethane ND 0.20 7/25/22 16:07 BRFND41.70.13 1.1
1,2-Dibromoethane (EDB)ND 0.20 7/25/22 16:07 BRFND41.50.12 0.93
1,2-Dichlorobenzene ND 0.20 7/25/22 16:07 BRFND41.20.11 0.69
1,3-Dichlorobenzene ND 0.20 7/25/22 16:07 BRFND41.20.11 0.67
1,4-Dichlorobenzene ND 0.20 7/25/22 16:07 BRFND41.20.13 0.79
Dichlorodifluoromethane (Freon 12)0.38 0.20 7/25/22 16:07 BRF1.9 40.990.20 0.97
1,1-Dichloroethane ND 0.20 7/25/22 16:07 BRFND40.810.17 0.71
1,2-Dichloroethane ND 0.20 7/25/22 16:07 BRFND40.810.18 0.73
1,1-Dichloroethylene ND 0.20 7/25/22 16:07 BRFND40.790.15 0.60
cis-1,2-Dichloroethylene ND 0.20 7/25/22 16:07 BRFND40.790.15 0.58
trans-1,2-Dichloroethylene ND 0.20 7/25/22 16:07 BRFND40.790.16 0.62
1,2-Dichloropropane ND 0.20 7/25/22 16:07 BRFND40.920.11 0.50
cis-1,3-Dichloropropene ND 0.20 7/25/22 16:07 BRFND40.910.10 0.47
trans-1,3-Dichloropropene ND 0.20 7/25/22 16:07 BRFND40.910.10 0.46
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)ND 0.20 7/25/22 16:07 BRFND41.40.20 1.4
1,4-Dioxane ND 2.0 7/25/22 16:07 BRFND47.20.17 0.60
Ethanol 3.9 8.0 7/25/22 16:07 BRFJ7.3 4153.5 6.6
Ethyl Acetate ND 2.0 7/25/22 16:07 BRFND47.21.0 3.6
Ethylbenzene 0.13 0.20 7/25/22 16:07 BRFJ0.56 40.870.12 0.51
4-Ethyltoluene ND 0.20 7/25/22 16:07 BRFND40.980.12 0.60
Heptane ND 0.20 7/25/22 16:07 BRFND40.820.13 0.52
Hexachlorobutadiene ND 0.20 7/25/22 16:07 BRFND42.10.16 1.8
Hexane ND 8.0 7/25/22 16:07 BRFND4281.0 3.7
2-Hexanone (MBK)ND 0.20 7/25/22 16:07 BRFND40.820.10 0.41
Isopropanol ND 8.0 7/25/22 16:07 BRFND4201.4 3.4
Methyl tert-Butyl Ether (MTBE)ND 0.20 7/25/22 16:07 BRFND40.720.15 0.56
Methylene Chloride ND 2.0 7/25/22 16:07 BRFND46.90.93 3.2
4-Methyl-2-pentanone (MIBK)ND 0.20 7/25/22 16:07 BRFND40.820.11 0.44
Naphthalene ND 0.20 7/25/22 16:07 BRFND41.00.15 0.79
Propene ND 8.0 7/25/22 16:07 BRFND4141.8 3.0
Styrene 0.17 0.20 7/25/22 16:07 BRFJ0.73 40.850.11 0.45
1,1,2,2-Tetrachloroethane ND 0.20 7/25/22 16:07 BRFND41.40.11 0.74
Page 8 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-03
Sample ID: 22G1156-03
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -28
Final Vacuum(in Hg): -6
Receipt Vacuum(in Hg): -6.8
Sampled: 7/18/2022 15:30
Canister ID: 2580
Flow Controller ID: 4121
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Tetrachloroethylene 0.20 0.20 7/25/22 16:07 BRFJ1.3 41.40.15 1.0
Tetrahydrofuran ND 2.0 7/25/22 16:07 BRFND45.90.33 0.97
Toluene 0.79 0.20 7/25/22 16:07 BRF3.0 40.750.11 0.43
1,2,4-Trichlorobenzene ND 0.20 7/25/22 16:07 BRFND41.50.19 1.4
1,1,1-Trichloroethane ND 0.20 7/25/22 16:07 BRFND41.10.16 0.86
1,1,2-Trichloroethane ND 0.20 7/25/22 16:07 BRFND41.10.14 0.77
Trichloroethylene ND 0.20 7/25/22 16:07 BRFND41.10.13 0.72
Trichlorofluoromethane (Freon 11)0.34 0.80 7/25/22 16:07 BRFJ1.9 44.50.24 1.3
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)ND 0.80 7/25/22 16:07 BRFND46.10.22 1.7
1,2,4-Trimethylbenzene 0.84 0.20 7/25/22 16:07 BRF4.1 40.980.088 0.43
1,3,5-Trimethylbenzene ND 0.20 7/25/22 16:07 BRFND40.980.11 0.52
Vinyl Acetate ND 4.0 7/25/22 16:07 BRFND4141.1 3.8
Vinyl Chloride ND 0.20 7/25/22 16:07 BRFND40.510.18 0.46
m&p-Xylene 0.47 0.40 7/25/22 16:07 BRF2.0 41.70.22 0.97
o-Xylene 0.24 0.20 7/25/22 16:07 BRF1.0 40.870.10 0.44
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1)97.2 7/25/22 16:0770-130
Page 9 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-10
Sample ID: 22G1156-04
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -29
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -5.6
Sampled: 7/18/2022 12:40
Canister ID: 2367
Flow Controller ID: 4324
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Acetone 7.5 8.0 7/25/22 16:48 BRFJ18 4194.8 11
Benzene ND 0.20 7/25/22 16:48 BRFND40.640.15 0.48
Benzyl chloride ND 0.20 7/25/22 16:48 BRFND41.00.18 0.91
Bromodichloromethane ND 0.20 7/25/22 16:48 BRFND41.30.14 0.94
Bromoform ND 0.20 7/25/22 16:48 BRFND42.10.14 1.4
Bromomethane ND 0.20 7/25/22 16:48 BRFND40.780.13 0.52
1,3-Butadiene ND 0.20 7/25/22 16:48 BRFND40.440.17 0.37
2-Butanone (MEK)ND 8.0 7/25/22 16:48 BRFND4242.1 6.3
Carbon Disulfide 3.1 2.0 7/25/22 16:48 BRF9.7 46.20.18 0.58
Carbon Tetrachloride ND 0.20 7/25/22 16:48 BRFND41.30.16 1.0
Chlorobenzene ND 0.20 7/25/22 16:48 BRFND40.920.13 0.61
Chloroethane ND 0.20 7/25/22 16:48 BRFND40.530.18 0.47
Chloroform 1.1 0.20 7/25/22 16:48 BRF5.3 40.980.19 0.93
Chloromethane ND 0.40 7/25/22 16:48 BRFND40.830.16 0.33
Cyclohexane ND 0.20 7/25/22 16:48 BRFND40.690.12 0.42
Dibromochloromethane ND 0.20 7/25/22 16:48 BRFND41.70.13 1.1
1,2-Dibromoethane (EDB)ND 0.20 7/25/22 16:48 BRFND41.50.12 0.93
1,2-Dichlorobenzene ND 0.20 7/25/22 16:48 BRFND41.20.11 0.69
1,3-Dichlorobenzene ND 0.20 7/25/22 16:48 BRFND41.20.11 0.67
1,4-Dichlorobenzene ND 0.20 7/25/22 16:48 BRFND41.20.13 0.79
Dichlorodifluoromethane (Freon 12)0.38 0.20 7/25/22 16:48 BRF1.9 40.990.20 0.97
1,1-Dichloroethane ND 0.20 7/25/22 16:48 BRFND40.810.17 0.71
1,2-Dichloroethane ND 0.20 7/25/22 16:48 BRFND40.810.18 0.73
1,1-Dichloroethylene ND 0.20 7/25/22 16:48 BRFND40.790.15 0.60
cis-1,2-Dichloroethylene ND 0.20 7/25/22 16:48 BRFND40.790.15 0.58
trans-1,2-Dichloroethylene ND 0.20 7/25/22 16:48 BRFND40.790.16 0.62
1,2-Dichloropropane ND 0.20 7/25/22 16:48 BRFND40.920.11 0.50
cis-1,3-Dichloropropene ND 0.20 7/25/22 16:48 BRFND40.910.10 0.47
trans-1,3-Dichloropropene ND 0.20 7/25/22 16:48 BRFND40.910.10 0.46
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)ND 0.20 7/25/22 16:48 BRFND41.40.20 1.4
1,4-Dioxane ND 2.0 7/25/22 16:48 BRFND47.20.17 0.60
Ethanol ND 8.0 7/25/22 16:48 BRFND4153.5 6.6
Ethyl Acetate ND 2.0 7/25/22 16:48 BRFND47.21.0 3.6
Ethylbenzene 0.18 0.20 7/25/22 16:48 BRFJ0.76 40.870.12 0.51
4-Ethyltoluene ND 0.20 7/25/22 16:48 BRFND40.980.12 0.60
Heptane ND 0.20 7/25/22 16:48 BRFND40.820.13 0.52
Hexachlorobutadiene ND 0.20 7/25/22 16:48 BRFND42.10.16 1.8
Hexane ND 8.0 7/25/22 16:48 BRFND4281.0 3.7
2-Hexanone (MBK)ND 0.20 7/25/22 16:48 BRFND40.820.10 0.41
Isopropanol ND 8.0 7/25/22 16:48 BRFND4201.4 3.4
Methyl tert-Butyl Ether (MTBE)0.36 0.20 7/25/22 16:48 BRF1.3 40.720.15 0.56
Methylene Chloride 1.4 2.0 7/25/22 16:48 BRFJ4.8 46.90.93 3.2
4-Methyl-2-pentanone (MIBK)ND 0.20 7/25/22 16:48 BRFND40.820.11 0.44
Naphthalene ND 0.20 7/25/22 16:48 BRFND41.00.15 0.79
Propene ND 8.0 7/25/22 16:48 BRFND4141.8 3.0
Styrene ND 0.20 7/25/22 16:48 BRFND40.850.11 0.45
1,1,2,2-Tetrachloroethane ND 0.20 7/25/22 16:48 BRFND41.40.11 0.74
Page 10 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-10
Sample ID: 22G1156-04
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -29
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -5.6
Sampled: 7/18/2022 12:40
Canister ID: 2367
Flow Controller ID: 4324
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Tetrachloroethylene 23 0.20 7/25/22 16:48 BRF160 41.40.15 1.0
Tetrahydrofuran 0.58 2.0 7/25/22 16:48 BRFJ1.7 45.90.33 0.97
Toluene 0.67 0.20 7/25/22 16:48 BRF2.5 40.750.11 0.43
1,2,4-Trichlorobenzene ND 0.20 7/25/22 16:48 BRFND41.50.19 1.4
1,1,1-Trichloroethane ND 0.20 7/25/22 16:48 BRFND41.10.16 0.86
1,1,2-Trichloroethane ND 0.20 7/25/22 16:48 BRFND41.10.14 0.77
Trichloroethylene ND 0.20 7/25/22 16:48 BRFND41.10.13 0.72
Trichlorofluoromethane (Freon 11)0.45 0.80 7/25/22 16:48 BRFJ2.5 44.50.24 1.3
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)ND 0.80 7/25/22 16:48 BRFND46.10.22 1.7
1,2,4-Trimethylbenzene 0.60 0.20 7/25/22 16:48 BRF2.9 40.980.088 0.43
1,3,5-Trimethylbenzene ND 0.20 7/25/22 16:48 BRFND40.980.11 0.52
Vinyl Acetate ND 4.0 7/25/22 16:48 BRFND4141.1 3.8
Vinyl Chloride ND 0.20 7/25/22 16:48 BRFND40.510.18 0.46
m&p-Xylene 0.57 0.40 7/25/22 16:48 BRF2.5 41.70.22 0.97
o-Xylene 0.35 0.20 7/25/22 16:48 BRF1.5 40.870.10 0.44
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1)96.8 7/25/22 16:4870-130
Page 11 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-02
Sample ID: 22G1156-05
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -28
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -7.4
Sampled: 7/18/2022 15:40
Canister ID: 2581
Flow Controller ID: 4331
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Acetone ND 8.0 7/25/22 17:28 BRFND4194.8 11
Benzene ND 0.20 7/25/22 17:28 BRFND40.640.15 0.48
Benzyl chloride ND 0.20 7/25/22 17:28 BRFND41.00.18 0.91
Bromodichloromethane ND 0.20 7/25/22 17:28 BRFND41.30.14 0.94
Bromoform ND 0.20 7/25/22 17:28 BRFND42.10.14 1.4
Bromomethane ND 0.20 7/25/22 17:28 BRFND40.780.13 0.52
1,3-Butadiene ND 0.20 7/25/22 17:28 BRFND40.440.17 0.37
2-Butanone (MEK)ND 8.0 7/25/22 17:28 BRFND4242.1 6.3
Carbon Disulfide 0.37 2.0 7/25/22 17:28 BRFJ1.1 46.20.18 0.58
Carbon Tetrachloride ND 0.20 7/25/22 17:28 BRFND41.30.16 1.0
Chlorobenzene ND 0.20 7/25/22 17:28 BRFND40.920.13 0.61
Chloroethane ND 0.20 7/25/22 17:28 BRFND40.530.18 0.47
Chloroform 1.2 0.20 7/25/22 17:28 BRF5.7 40.980.19 0.93
Chloromethane ND 0.40 7/25/22 17:28 BRFND40.830.16 0.33
Cyclohexane ND 0.20 7/25/22 17:28 BRFND40.690.12 0.42
Dibromochloromethane ND 0.20 7/25/22 17:28 BRFND41.70.13 1.1
1,2-Dibromoethane (EDB)ND 0.20 7/25/22 17:28 BRFND41.50.12 0.93
1,2-Dichlorobenzene ND 0.20 7/25/22 17:28 BRFND41.20.11 0.69
1,3-Dichlorobenzene 0.12 0.20 7/25/22 17:28 BRFJ0.75 41.20.11 0.67
1,4-Dichlorobenzene ND 0.20 7/25/22 17:28 BRFND41.20.13 0.79
Dichlorodifluoromethane (Freon 12)0.46 0.20 7/25/22 17:28 BRF2.3 40.990.20 0.97
1,1-Dichloroethane ND 0.20 7/25/22 17:28 BRFND40.810.17 0.71
1,2-Dichloroethane ND 0.20 7/25/22 17:28 BRFND40.810.18 0.73
1,1-Dichloroethylene ND 0.20 7/25/22 17:28 BRFND40.790.15 0.60
cis-1,2-Dichloroethylene ND 0.20 7/25/22 17:28 BRFND40.790.15 0.58
trans-1,2-Dichloroethylene ND 0.20 7/25/22 17:28 BRFND40.790.16 0.62
1,2-Dichloropropane ND 0.20 7/25/22 17:28 BRFND40.920.11 0.50
cis-1,3-Dichloropropene ND 0.20 7/25/22 17:28 BRFND40.910.10 0.47
trans-1,3-Dichloropropene ND 0.20 7/25/22 17:28 BRFND40.910.10 0.46
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)ND 0.20 7/25/22 17:28 BRFND41.40.20 1.4
1,4-Dioxane ND 2.0 7/25/22 17:28 BRFND47.20.17 0.60
Ethanol ND 8.0 7/25/22 17:28 BRFND4153.5 6.6
Ethyl Acetate ND 2.0 7/25/22 17:28 BRFND47.21.0 3.6
Ethylbenzene ND 0.20 7/25/22 17:28 BRFND40.870.12 0.51
4-Ethyltoluene ND 0.20 7/25/22 17:28 BRFND40.980.12 0.60
Heptane ND 0.20 7/25/22 17:28 BRFND40.820.13 0.52
Hexachlorobutadiene ND 0.20 7/25/22 17:28 BRFND42.10.16 1.8
Hexane ND 8.0 7/25/22 17:28 BRFND4281.0 3.7
2-Hexanone (MBK)ND 0.20 7/25/22 17:28 BRFND40.820.10 0.41
Isopropanol ND 8.0 7/25/22 17:28 BRFND4201.4 3.4
Methyl tert-Butyl Ether (MTBE)ND 0.20 7/25/22 17:28 BRFND40.720.15 0.56
Methylene Chloride ND 2.0 7/25/22 17:28 BRFND46.90.93 3.2
4-Methyl-2-pentanone (MIBK)ND 0.20 7/25/22 17:28 BRFND40.820.11 0.44
Naphthalene ND 0.20 7/25/22 17:28 BRFND41.00.15 0.79
Propene ND 8.0 7/25/22 17:28 BRFND4141.8 3.0
Styrene ND 0.20 7/25/22 17:28 BRFND40.850.11 0.45
1,1,2,2-Tetrachloroethane ND 0.20 7/25/22 17:28 BRFND41.40.11 0.74
Page 12 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-02
Sample ID: 22G1156-05
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -28
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -7.4
Sampled: 7/18/2022 15:40
Canister ID: 2581
Flow Controller ID: 4331
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Tetrachloroethylene ND 0.20 7/25/22 17:28 BRFND41.40.15 1.0
Tetrahydrofuran ND 2.0 7/25/22 17:28 BRFND45.90.33 0.97
Toluene 0.56 0.20 7/25/22 17:28 BRF2.1 40.750.11 0.43
1,2,4-Trichlorobenzene ND 0.20 7/25/22 17:28 BRFND41.50.19 1.4
1,1,1-Trichloroethane ND 0.20 7/25/22 17:28 BRFND41.10.16 0.86
1,1,2-Trichloroethane ND 0.20 7/25/22 17:28 BRFND41.10.14 0.77
Trichloroethylene ND 0.20 7/25/22 17:28 BRFND41.10.13 0.72
Trichlorofluoromethane (Freon 11)0.43 0.80 7/25/22 17:28 BRFJ2.4 44.50.24 1.3
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)0.43 0.80 7/25/22 17:28 BRFJ3.3 46.10.22 1.7
1,2,4-Trimethylbenzene 0.82 0.20 7/25/22 17:28 BRF4.1 40.980.088 0.43
1,3,5-Trimethylbenzene ND 0.20 7/25/22 17:28 BRFND40.980.11 0.52
Vinyl Acetate ND 4.0 7/25/22 17:28 BRFND4141.1 3.8
Vinyl Chloride ND 0.20 7/25/22 17:28 BRFND40.510.18 0.46
m&p-Xylene 0.36 0.40 7/25/22 17:28 BRFJ1.5 41.70.22 0.97
o-Xylene 0.17 0.20 7/25/22 17:28 BRFJ0.73 40.870.10 0.44
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1)95.4 7/25/22 17:2870-130
Page 13 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-11
Sample ID: 22G1156-06
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -29
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -6.1
Sampled: 7/18/2022 13:00
Canister ID: 2397
Flow Controller ID: 4344
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Acetone 5.9 8.0 7/25/22 18:08 BRFJ14 4194.8 11
Benzene ND 0.20 7/25/22 18:08 BRFND40.640.15 0.48
Benzyl chloride ND 0.20 7/25/22 18:08 BRFND41.00.18 0.91
Bromodichloromethane ND 0.20 7/25/22 18:08 BRFND41.30.14 0.94
Bromoform ND 0.20 7/25/22 18:08 BRFND42.10.14 1.4
Bromomethane ND 0.20 7/25/22 18:08 BRFND40.780.13 0.52
1,3-Butadiene ND 0.20 7/25/22 18:08 BRFND40.440.17 0.37
2-Butanone (MEK)ND 8.0 7/25/22 18:08 BRFND4242.1 6.3
Carbon Disulfide 4.9 2.0 7/25/22 18:08 BRF15 46.20.18 0.58
Carbon Tetrachloride ND 0.20 7/25/22 18:08 BRFND41.30.16 1.0
Chlorobenzene ND 0.20 7/25/22 18:08 BRFND40.920.13 0.61
Chloroethane ND 0.20 7/25/22 18:08 BRFND40.530.18 0.47
Chloroform ND 0.20 7/25/22 18:08 BRFND40.980.19 0.93
Chloromethane ND 0.40 7/25/22 18:08 BRFND40.830.16 0.33
Cyclohexane ND 0.20 7/25/22 18:08 BRFND40.690.12 0.42
Dibromochloromethane ND 0.20 7/25/22 18:08 BRFND41.70.13 1.1
1,2-Dibromoethane (EDB)ND 0.20 7/25/22 18:08 BRFND41.50.12 0.93
1,2-Dichlorobenzene ND 0.20 7/25/22 18:08 BRFND41.20.11 0.69
1,3-Dichlorobenzene 0.15 0.20 7/25/22 18:08 BRFJ0.89 41.20.11 0.67
1,4-Dichlorobenzene ND 0.20 7/25/22 18:08 BRFND41.20.13 0.79
Dichlorodifluoromethane (Freon 12)0.39 0.20 7/25/22 18:08 BRF1.9 40.990.20 0.97
1,1-Dichloroethane ND 0.20 7/25/22 18:08 BRFND40.810.17 0.71
1,2-Dichloroethane ND 0.20 7/25/22 18:08 BRFND40.810.18 0.73
1,1-Dichloroethylene ND 0.20 7/25/22 18:08 BRFND40.790.15 0.60
cis-1,2-Dichloroethylene ND 0.20 7/25/22 18:08 BRFND40.790.15 0.58
trans-1,2-Dichloroethylene ND 0.20 7/25/22 18:08 BRFND40.790.16 0.62
1,2-Dichloropropane ND 0.20 7/25/22 18:08 BRFND40.920.11 0.50
cis-1,3-Dichloropropene ND 0.20 7/25/22 18:08 BRFND40.910.10 0.47
trans-1,3-Dichloropropene ND 0.20 7/25/22 18:08 BRFND40.910.10 0.46
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)ND 0.20 7/25/22 18:08 BRFND41.40.20 1.4
1,4-Dioxane ND 2.0 7/25/22 18:08 BRFND47.20.17 0.60
Ethanol 6.2 8.0 7/25/22 18:08 BRFJ12 4153.5 6.6
Ethyl Acetate ND 2.0 7/25/22 18:08 BRFND47.21.0 3.6
Ethylbenzene 0.16 0.20 7/25/22 18:08 BRFJ0.68 40.870.12 0.51
4-Ethyltoluene ND 0.20 7/25/22 18:08 BRFND40.980.12 0.60
Heptane ND 0.20 7/25/22 18:08 BRFND40.820.13 0.52
Hexachlorobutadiene ND 0.20 7/25/22 18:08 BRFND42.10.16 1.8
Hexane ND 8.0 7/25/22 18:08 BRFND4281.0 3.7
2-Hexanone (MBK)ND 0.20 7/25/22 18:08 BRFND40.820.10 0.41
Isopropanol ND 8.0 7/25/22 18:08 BRFND4201.4 3.4
Methyl tert-Butyl Ether (MTBE)ND 0.20 7/25/22 18:08 BRFND40.720.15 0.56
Methylene Chloride ND 2.0 7/25/22 18:08 BRFND46.90.93 3.2
4-Methyl-2-pentanone (MIBK)ND 0.20 7/25/22 18:08 BRFND40.820.11 0.44
Naphthalene ND 0.20 7/25/22 18:08 BRFND41.00.15 0.79
Propene ND 8.0 7/25/22 18:08 BRFND4141.8 3.0
Styrene ND 0.20 7/25/22 18:08 BRFND40.850.11 0.45
1,1,2,2-Tetrachloroethane ND 0.20 7/25/22 18:08 BRFND41.40.11 0.74
Page 14 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-11
Sample ID: 22G1156-06
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -29
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -6.1
Sampled: 7/18/2022 13:00
Canister ID: 2397
Flow Controller ID: 4344
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Tetrachloroethylene 1.2 0.20 7/25/22 18:08 BRF8.4 41.40.15 1.0
Tetrahydrofuran ND 2.0 7/25/22 18:08 BRFND45.90.33 0.97
Toluene 0.74 0.20 7/25/22 18:08 BRF2.8 40.750.11 0.43
1,2,4-Trichlorobenzene ND 0.20 7/25/22 18:08 BRFND41.50.19 1.4
1,1,1-Trichloroethane ND 0.20 7/25/22 18:08 BRFND41.10.16 0.86
1,1,2-Trichloroethane ND 0.20 7/25/22 18:08 BRFND41.10.14 0.77
Trichloroethylene ND 0.20 7/25/22 18:08 BRFND41.10.13 0.72
Trichlorofluoromethane (Freon 11)0.28 0.80 7/25/22 18:08 BRFJ1.6 44.50.24 1.3
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)ND 0.80 7/25/22 18:08 BRFND46.10.22 1.7
1,2,4-Trimethylbenzene 0.83 0.20 7/25/22 18:08 BRF4.1 40.980.088 0.43
1,3,5-Trimethylbenzene ND 0.20 7/25/22 18:08 BRFND40.980.11 0.52
Vinyl Acetate ND 4.0 7/25/22 18:08 BRFND4141.1 3.8
Vinyl Chloride ND 0.20 7/25/22 18:08 BRFND40.510.18 0.46
m&p-Xylene 0.66 0.40 7/25/22 18:08 BRF2.9 41.70.22 0.97
o-Xylene 0.26 0.20 7/25/22 18:08 BRF1.1 40.870.10 0.44
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1)97.5 7/25/22 18:0870-130
Page 15 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-09
Sample ID: 22G1156-07
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -28
Final Vacuum(in Hg): -6
Receipt Vacuum(in Hg): -7.4
Sampled: 7/18/2022 13:10
Canister ID: 2573
Flow Controller ID: 4333
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Acetone ND 8.0 7/25/22 18:48 BRFND4194.8 11
Benzene ND 0.20 7/25/22 18:48 BRFND40.640.15 0.48
Benzyl chloride ND 0.20 7/25/22 18:48 BRFND41.00.18 0.91
Bromodichloromethane ND 0.20 7/25/22 18:48 BRFND41.30.14 0.94
Bromoform ND 0.20 7/25/22 18:48 BRFND42.10.14 1.4
Bromomethane ND 0.20 7/25/22 18:48 BRFND40.780.13 0.52
1,3-Butadiene ND 0.20 7/25/22 18:48 BRFND40.440.17 0.37
2-Butanone (MEK)ND 8.0 7/25/22 18:48 BRFND4242.1 6.3
Carbon Disulfide 0.97 2.0 7/25/22 18:48 BRFJ3.0 46.20.18 0.58
Carbon Tetrachloride ND 0.20 7/25/22 18:48 BRFND41.30.16 1.0
Chlorobenzene ND 0.20 7/25/22 18:48 BRFND40.920.13 0.61
Chloroethane ND 0.20 7/25/22 18:48 BRFND40.530.18 0.47
Chloroform 0.22 0.20 7/25/22 18:48 BRF1.1 40.980.19 0.93
Chloromethane ND 0.40 7/25/22 18:48 BRFND40.830.16 0.33
Cyclohexane ND 0.20 7/25/22 18:48 BRFND40.690.12 0.42
Dibromochloromethane ND 0.20 7/25/22 18:48 BRFND41.70.13 1.1
1,2-Dibromoethane (EDB)ND 0.20 7/25/22 18:48 BRFND41.50.12 0.93
1,2-Dichlorobenzene ND 0.20 7/25/22 18:48 BRFND41.20.11 0.69
1,3-Dichlorobenzene 0.16 0.20 7/25/22 18:48 BRFJ0.99 41.20.11 0.67
1,4-Dichlorobenzene ND 0.20 7/25/22 18:48 BRFND41.20.13 0.79
Dichlorodifluoromethane (Freon 12)0.41 0.20 7/25/22 18:48 BRF2.0 40.990.20 0.97
1,1-Dichloroethane ND 0.20 7/25/22 18:48 BRFND40.810.17 0.71
1,2-Dichloroethane ND 0.20 7/25/22 18:48 BRFND40.810.18 0.73
1,1-Dichloroethylene ND 0.20 7/25/22 18:48 BRFND40.790.15 0.60
cis-1,2-Dichloroethylene ND 0.20 7/25/22 18:48 BRFND40.790.15 0.58
trans-1,2-Dichloroethylene ND 0.20 7/25/22 18:48 BRFND40.790.16 0.62
1,2-Dichloropropane ND 0.20 7/25/22 18:48 BRFND40.920.11 0.50
cis-1,3-Dichloropropene ND 0.20 7/25/22 18:48 BRFND40.910.10 0.47
trans-1,3-Dichloropropene ND 0.20 7/25/22 18:48 BRFND40.910.10 0.46
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)ND 0.20 7/25/22 18:48 BRFND41.40.20 1.4
1,4-Dioxane ND 2.0 7/25/22 18:48 BRFND47.20.17 0.60
Ethanol ND 8.0 7/25/22 18:48 BRFND4153.5 6.6
Ethyl Acetate ND 2.0 7/25/22 18:48 BRFND47.21.0 3.6
Ethylbenzene 0.14 0.20 7/25/22 18:48 BRFJ0.59 40.870.12 0.51
4-Ethyltoluene ND 0.20 7/25/22 18:48 BRFND40.980.12 0.60
Heptane ND 0.20 7/25/22 18:48 BRFND40.820.13 0.52
Hexachlorobutadiene ND 0.20 7/25/22 18:48 BRFND42.10.16 1.8
Hexane ND 8.0 7/25/22 18:48 BRFND4281.0 3.7
2-Hexanone (MBK)ND 0.20 7/25/22 18:48 BRFND40.820.10 0.41
Isopropanol ND 8.0 7/25/22 18:48 BRFND4201.4 3.4
Methyl tert-Butyl Ether (MTBE)ND 0.20 7/25/22 18:48 BRFND40.720.15 0.56
Methylene Chloride ND 2.0 7/25/22 18:48 BRFND46.90.93 3.2
4-Methyl-2-pentanone (MIBK)ND 0.20 7/25/22 18:48 BRFND40.820.11 0.44
Naphthalene ND 0.20 7/25/22 18:48 BRFND41.00.15 0.79
Propene ND 8.0 7/25/22 18:48 BRFND4141.8 3.0
Styrene ND 0.20 7/25/22 18:48 BRFND40.850.11 0.45
1,1,2,2-Tetrachloroethane ND 0.20 7/25/22 18:48 BRFND41.40.11 0.74
Page 16 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-09
Sample ID: 22G1156-07
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -28
Final Vacuum(in Hg): -6
Receipt Vacuum(in Hg): -7.4
Sampled: 7/18/2022 13:10
Canister ID: 2573
Flow Controller ID: 4333
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Tetrachloroethylene 12 0.20 7/25/22 18:48 BRF84 41.40.15 1.0
Tetrahydrofuran ND 2.0 7/25/22 18:48 BRFND45.90.33 0.97
Toluene 0.78 0.20 7/25/22 18:48 BRF3.0 40.750.11 0.43
1,2,4-Trichlorobenzene ND 0.20 7/25/22 18:48 BRFND41.50.19 1.4
1,1,1-Trichloroethane ND 0.20 7/25/22 18:48 BRFND41.10.16 0.86
1,1,2-Trichloroethane ND 0.20 7/25/22 18:48 BRFND41.10.14 0.77
Trichloroethylene ND 0.20 7/25/22 18:48 BRFND41.10.13 0.72
Trichlorofluoromethane (Freon 11)5.6 0.80 7/25/22 18:48 BRF31 44.50.24 1.3
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)ND 0.80 7/25/22 18:48 BRFND46.10.22 1.7
1,2,4-Trimethylbenzene 0.83 0.20 7/25/22 18:48 BRF4.1 40.980.088 0.43
1,3,5-Trimethylbenzene 0.11 0.20 7/25/22 18:48 BRFJ0.55 40.980.11 0.52
Vinyl Acetate ND 4.0 7/25/22 18:48 BRFND4141.1 3.8
Vinyl Chloride ND 0.20 7/25/22 18:48 BRFND40.510.18 0.46
m&p-Xylene 0.57 0.40 7/25/22 18:48 BRF2.5 41.70.22 0.97
o-Xylene 0.26 0.20 7/25/22 18:48 BRF1.1 40.870.10 0.44
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1)96.4 7/25/22 18:4870-130
Page 17 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-12
Sample ID: 22G1156-08
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -29
Final Vacuum(in Hg): -6
Receipt Vacuum(in Hg): -7.2
Sampled: 7/18/2022 12:15
Canister ID: 2404
Flow Controller ID: 4328
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Acetone 4.8 8.0 7/25/22 19:28 BRFJ12 4194.8 11
Benzene ND 0.20 7/25/22 19:28 BRFND40.640.15 0.48
Benzyl chloride ND 0.20 7/25/22 19:28 BRFND41.00.18 0.91
Bromodichloromethane ND 0.20 7/25/22 19:28 BRFND41.30.14 0.94
Bromoform ND 0.20 7/25/22 19:28 BRFND42.10.14 1.4
Bromomethane ND 0.20 7/25/22 19:28 BRFND40.780.13 0.52
1,3-Butadiene ND 0.20 7/25/22 19:28 BRFND40.440.17 0.37
2-Butanone (MEK)ND 8.0 7/25/22 19:28 BRFND4242.1 6.3
Carbon Disulfide 1.2 2.0 7/25/22 19:28 BRFJ3.8 46.20.18 0.58
Carbon Tetrachloride ND 0.20 7/25/22 19:28 BRFND41.30.16 1.0
Chlorobenzene ND 0.20 7/25/22 19:28 BRFND40.920.13 0.61
Chloroethane ND 0.20 7/25/22 19:28 BRFND40.530.18 0.47
Chloroform 1.3 0.20 7/25/22 19:28 BRF6.5 40.980.19 0.93
Chloromethane ND 0.40 7/25/22 19:28 BRFND40.830.16 0.33
Cyclohexane ND 0.20 7/25/22 19:28 BRFND40.690.12 0.42
Dibromochloromethane ND 0.20 7/25/22 19:28 BRFND41.70.13 1.1
1,2-Dibromoethane (EDB)ND 0.20 7/25/22 19:28 BRFND41.50.12 0.93
1,2-Dichlorobenzene ND 0.20 7/25/22 19:28 BRFND41.20.11 0.69
1,3-Dichlorobenzene 0.16 0.20 7/25/22 19:28 BRFJ0.99 41.20.11 0.67
1,4-Dichlorobenzene ND 0.20 7/25/22 19:28 BRFND41.20.13 0.79
Dichlorodifluoromethane (Freon 12)0.36 0.20 7/25/22 19:28 BRF1.8 40.990.20 0.97
1,1-Dichloroethane ND 0.20 7/25/22 19:28 BRFND40.810.17 0.71
1,2-Dichloroethane ND 0.20 7/25/22 19:28 BRFND40.810.18 0.73
1,1-Dichloroethylene ND 0.20 7/25/22 19:28 BRFND40.790.15 0.60
cis-1,2-Dichloroethylene ND 0.20 7/25/22 19:28 BRFND40.790.15 0.58
trans-1,2-Dichloroethylene ND 0.20 7/25/22 19:28 BRFND40.790.16 0.62
1,2-Dichloropropane ND 0.20 7/25/22 19:28 BRFND40.920.11 0.50
cis-1,3-Dichloropropene ND 0.20 7/25/22 19:28 BRFND40.910.10 0.47
trans-1,3-Dichloropropene ND 0.20 7/25/22 19:28 BRFND40.910.10 0.46
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)ND 0.20 7/25/22 19:28 BRFND41.40.20 1.4
1,4-Dioxane 0.27 2.0 7/25/22 19:28 BRFJ0.97 47.20.17 0.60
Ethanol 5.3 8.0 7/25/22 19:28 BRFJ10.0 4153.5 6.6
Ethyl Acetate ND 2.0 7/25/22 19:28 BRFND47.21.0 3.6
Ethylbenzene 0.19 0.20 7/25/22 19:28 BRFJ0.82 40.870.12 0.51
4-Ethyltoluene ND 0.20 7/25/22 19:28 BRFND40.980.12 0.60
Heptane ND 0.20 7/25/22 19:28 BRFND40.820.13 0.52
Hexachlorobutadiene ND 0.20 7/25/22 19:28 BRFND42.10.16 1.8
Hexane ND 8.0 7/25/22 19:28 BRFND4281.0 3.7
2-Hexanone (MBK)ND 0.20 7/25/22 19:28 BRFND40.820.10 0.41
Isopropanol ND 8.0 7/25/22 19:28 BRFND4201.4 3.4
Methyl tert-Butyl Ether (MTBE)ND 0.20 7/25/22 19:28 BRFND40.720.15 0.56
Methylene Chloride ND 2.0 7/25/22 19:28 BRFND46.90.93 3.2
4-Methyl-2-pentanone (MIBK)ND 0.20 7/25/22 19:28 BRFND40.820.11 0.44
Naphthalene ND 0.20 7/25/22 19:28 BRFND41.00.15 0.79
Propene ND 8.0 7/25/22 19:28 BRFND4141.8 3.0
Styrene ND 0.20 7/25/22 19:28 BRFND40.850.11 0.45
1,1,2,2-Tetrachloroethane ND 0.20 7/25/22 19:28 BRFND41.40.11 0.74
Page 18 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-12
Sample ID: 22G1156-08
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -29
Final Vacuum(in Hg): -6
Receipt Vacuum(in Hg): -7.2
Sampled: 7/18/2022 12:15
Canister ID: 2404
Flow Controller ID: 4328
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Tetrachloroethylene 5.4 0.20 7/25/22 19:28 BRF36 41.40.15 1.0
Tetrahydrofuran 0.85 2.0 7/25/22 19:28 BRFJ2.5 45.90.33 0.97
Toluene 0.62 0.20 7/25/22 19:28 BRF2.3 40.750.11 0.43
1,2,4-Trichlorobenzene ND 0.20 7/25/22 19:28 BRFND41.50.19 1.4
1,1,1-Trichloroethane ND 0.20 7/25/22 19:28 BRFND41.10.16 0.86
1,1,2-Trichloroethane ND 0.20 7/25/22 19:28 BRFND41.10.14 0.77
Trichloroethylene ND 0.20 7/25/22 19:28 BRFND41.10.13 0.72
Trichlorofluoromethane (Freon 11)0.48 0.80 7/25/22 19:28 BRFJ2.7 44.50.24 1.3
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)ND 0.80 7/25/22 19:28 BRFND46.10.22 1.7
1,2,4-Trimethylbenzene 0.98 0.20 7/25/22 19:28 BRF4.8 40.980.088 0.43
1,3,5-Trimethylbenzene 0.11 0.20 7/25/22 19:28 BRFJ0.53 40.980.11 0.52
Vinyl Acetate ND 4.0 7/25/22 19:28 BRFND4141.1 3.8
Vinyl Chloride ND 0.20 7/25/22 19:28 BRFND40.510.18 0.46
m&p-Xylene 0.76 0.40 7/25/22 19:28 BRF3.3 41.70.22 0.97
o-Xylene 0.32 0.20 7/25/22 19:28 BRF1.4 40.870.10 0.44
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1)96.7 7/25/22 19:2870-130
Page 19 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: DUP-01
Sample ID: 22G1156-09
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -28
Final Vacuum(in Hg): -6
Receipt Vacuum(in Hg): -7.7
Sampled: 7/18/2022 00:00
Canister ID: 2583
Flow Controller ID:
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Acetone 11 8.0 7/25/22 20:09 BRF27 4194.8 11
Benzene ND 0.20 7/25/22 20:09 BRFND40.640.15 0.48
Benzyl chloride ND 0.20 7/25/22 20:09 BRFND41.00.18 0.91
Bromodichloromethane ND 0.20 7/25/22 20:09 BRFND41.30.14 0.94
Bromoform ND 0.20 7/25/22 20:09 BRFND42.10.14 1.4
Bromomethane ND 0.20 7/25/22 20:09 BRFND40.780.13 0.52
1,3-Butadiene ND 0.20 7/25/22 20:09 BRFND40.440.17 0.37
2-Butanone (MEK)ND 8.0 7/25/22 20:09 BRFND4242.1 6.3
Carbon Disulfide 0.79 2.0 7/25/22 20:09 BRFJ2.5 46.20.18 0.58
Carbon Tetrachloride ND 0.20 7/25/22 20:09 BRFND41.30.16 1.0
Chlorobenzene ND 0.20 7/25/22 20:09 BRFND40.920.13 0.61
Chloroethane ND 0.20 7/25/22 20:09 BRFND40.530.18 0.47
Chloroform 0.28 0.20 7/25/22 20:09 BRF1.4 40.980.19 0.93
Chloromethane ND 0.40 7/25/22 20:09 BRFND40.830.16 0.33
Cyclohexane ND 0.20 7/25/22 20:09 BRFND40.690.12 0.42
Dibromochloromethane ND 0.20 7/25/22 20:09 BRFND41.70.13 1.1
1,2-Dibromoethane (EDB)ND 0.20 7/25/22 20:09 BRFND41.50.12 0.93
1,2-Dichlorobenzene ND 0.20 7/25/22 20:09 BRFND41.20.11 0.69
1,3-Dichlorobenzene 0.12 0.20 7/25/22 20:09 BRFJ0.70 41.20.11 0.67
1,4-Dichlorobenzene ND 0.20 7/25/22 20:09 BRFND41.20.13 0.79
Dichlorodifluoromethane (Freon 12)0.36 0.20 7/25/22 20:09 BRF1.8 40.990.20 0.97
1,1-Dichloroethane ND 0.20 7/25/22 20:09 BRFND40.810.17 0.71
1,2-Dichloroethane ND 0.20 7/25/22 20:09 BRFND40.810.18 0.73
1,1-Dichloroethylene ND 0.20 7/25/22 20:09 BRFND40.790.15 0.60
cis-1,2-Dichloroethylene ND 0.20 7/25/22 20:09 BRFND40.790.15 0.58
trans-1,2-Dichloroethylene ND 0.20 7/25/22 20:09 BRFND40.790.16 0.62
1,2-Dichloropropane ND 0.20 7/25/22 20:09 BRFND40.920.11 0.50
cis-1,3-Dichloropropene ND 0.20 7/25/22 20:09 BRFND40.910.10 0.47
trans-1,3-Dichloropropene ND 0.20 7/25/22 20:09 BRFND40.910.10 0.46
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)ND 0.20 7/25/22 20:09 BRFND41.40.20 1.4
1,4-Dioxane ND 2.0 7/25/22 20:09 BRFND47.20.17 0.60
Ethanol 58 8.0 7/25/22 20:09 BRF110 4153.5 6.6
Ethyl Acetate ND 2.0 7/25/22 20:09 BRFND47.21.0 3.6
Ethylbenzene ND 0.20 7/25/22 20:09 BRFND40.870.12 0.51
4-Ethyltoluene ND 0.20 7/25/22 20:09 BRFND40.980.12 0.60
Heptane ND 0.20 7/25/22 20:09 BRFND40.820.13 0.52
Hexachlorobutadiene ND 0.20 7/25/22 20:09 BRFND42.10.16 1.8
Hexane ND 8.0 7/25/22 20:09 BRFND4281.0 3.7
2-Hexanone (MBK)ND 0.20 7/25/22 20:09 BRFND40.820.10 0.41
Isopropanol 1.8 8.0 7/25/22 20:09 BRFJ4.5 4201.4 3.4
Methyl tert-Butyl Ether (MTBE)ND 0.20 7/25/22 20:09 BRFND40.720.15 0.56
Methylene Chloride ND 2.0 7/25/22 20:09 BRFND46.90.93 3.2
4-Methyl-2-pentanone (MIBK)0.15 0.20 7/25/22 20:09 BRFJ0.62 40.820.11 0.44
Naphthalene ND 0.20 7/25/22 20:09 BRFND41.00.15 0.79
Propene ND 8.0 7/25/22 20:09 BRFND4141.8 3.0
Styrene ND 0.20 7/25/22 20:09 BRFND40.850.11 0.45
1,1,2,2-Tetrachloroethane ND 0.20 7/25/22 20:09 BRFND41.40.11 0.74
Page 20 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: DUP-01
Sample ID: 22G1156-09
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -28
Final Vacuum(in Hg): -6
Receipt Vacuum(in Hg): -7.7
Sampled: 7/18/2022 00:00
Canister ID: 2583
Flow Controller ID:
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Tetrachloroethylene 2.7 0.20 7/25/22 20:09 BRF18 41.40.15 1.0
Tetrahydrofuran 2.4 2.0 7/25/22 20:09 BRF7.0 45.90.33 0.97
Toluene 0.66 0.20 7/25/22 20:09 BRF2.5 40.750.11 0.43
1,2,4-Trichlorobenzene ND 0.20 7/25/22 20:09 BRFND41.50.19 1.4
1,1,1-Trichloroethane ND 0.20 7/25/22 20:09 BRFND41.10.16 0.86
1,1,2-Trichloroethane ND 0.20 7/25/22 20:09 BRFND41.10.14 0.77
Trichloroethylene ND 0.20 7/25/22 20:09 BRFND41.10.13 0.72
Trichlorofluoromethane (Freon 11)0.35 0.80 7/25/22 20:09 BRFJ2.0 44.50.24 1.3
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)ND 0.80 7/25/22 20:09 BRFND46.10.22 1.7
1,2,4-Trimethylbenzene 0.60 0.20 7/25/22 20:09 BRF2.9 40.980.088 0.43
1,3,5-Trimethylbenzene ND 0.20 7/25/22 20:09 BRFND40.980.11 0.52
Vinyl Acetate ND 4.0 7/25/22 20:09 BRFND4141.1 3.8
Vinyl Chloride ND 0.20 7/25/22 20:09 BRFND40.510.18 0.46
m&p-Xylene 0.32 0.40 7/25/22 20:09 BRFJ1.4 41.70.22 0.97
o-Xylene 0.17 0.20 7/25/22 20:09 BRFJ0.73 40.870.10 0.44
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1)96.9 7/25/22 20:0970-130
Page 21 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-07
Sample ID: 22G1156-10
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -30
Final Vacuum(in Hg): -4
Receipt Vacuum(in Hg): -3.6
Sampled: 7/18/2022 14:02
Canister ID: 2751
Flow Controller ID: 4113
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Acetone ND 8.0 7/25/22 20:49 BRFND4194.8 11
Benzene 2.7 0.20 7/25/22 20:49 BRF8.6 40.640.15 0.48
Benzyl chloride ND 0.20 7/25/22 20:49 BRFND41.00.18 0.91
Bromodichloromethane ND 0.20 7/25/22 20:49 BRFND41.30.14 0.94
Bromoform ND 0.20 7/25/22 20:49 BRFND42.10.14 1.4
Bromomethane ND 0.20 7/25/22 20:49 BRFND40.780.13 0.52
1,3-Butadiene ND 0.20 7/25/22 20:49 BRFND40.440.17 0.37
2-Butanone (MEK)5.4 8.0 7/25/22 20:49 BRFJ16 4242.1 6.3
Carbon Disulfide 0.41 2.0 7/25/22 20:49 BRFJ1.3 46.20.18 0.58
Carbon Tetrachloride ND 0.20 7/25/22 20:49 BRFND41.30.16 1.0
Chlorobenzene ND 0.20 7/25/22 20:49 BRFND40.920.13 0.61
Chloroethane ND 0.20 7/25/22 20:49 BRFND40.530.18 0.47
Chloroform ND 0.20 7/25/22 20:49 BRFND40.980.19 0.93
Chloromethane ND 0.40 7/25/22 20:49 BRFND40.830.16 0.33
Cyclohexane 2.9 0.20 7/25/22 20:49 BRF10 40.690.12 0.42
Dibromochloromethane ND 0.20 7/25/22 20:49 BRFND41.70.13 1.1
1,2-Dibromoethane (EDB)ND 0.20 7/25/22 20:49 BRFND41.50.12 0.93
1,2-Dichlorobenzene ND 0.20 7/25/22 20:49 BRFND41.20.11 0.69
1,3-Dichlorobenzene ND 0.20 7/25/22 20:49 BRFND41.20.11 0.67
1,4-Dichlorobenzene ND 0.20 7/25/22 20:49 BRFND41.20.13 0.79
Dichlorodifluoromethane (Freon 12)0.41 0.20 7/25/22 20:49 BRF2.0 40.990.20 0.97
1,1-Dichloroethane ND 0.20 7/25/22 20:49 BRFND40.810.17 0.71
1,2-Dichloroethane ND 0.20 7/25/22 20:49 BRFND40.810.18 0.73
1,1-Dichloroethylene ND 0.20 7/25/22 20:49 BRFND40.790.15 0.60
cis-1,2-Dichloroethylene ND 0.20 7/25/22 20:49 BRFND40.790.15 0.58
trans-1,2-Dichloroethylene ND 0.20 7/25/22 20:49 BRFND40.790.16 0.62
1,2-Dichloropropane ND 0.20 7/25/22 20:49 BRFND40.920.11 0.50
cis-1,3-Dichloropropene ND 0.20 7/25/22 20:49 BRFND40.910.10 0.47
trans-1,3-Dichloropropene ND 0.20 7/25/22 20:49 BRFND40.910.10 0.46
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)ND 0.20 7/25/22 20:49 BRFND41.40.20 1.4
1,4-Dioxane ND 2.0 7/25/22 20:49 BRFND47.20.17 0.60
Ethanol 8.5 8.0 7/25/22 20:49 BRF16 4153.5 6.6
Ethyl Acetate ND 2.0 7/25/22 20:49 BRFND47.21.0 3.6
Ethylbenzene 0.14 0.20 7/25/22 20:49 BRFJ0.61 40.870.12 0.51
4-Ethyltoluene ND 0.20 7/25/22 20:49 BRFND40.980.12 0.60
Heptane ND 0.20 7/25/22 20:49 BRFND40.820.13 0.52
Hexachlorobutadiene ND 0.20 7/25/22 20:49 BRFND42.10.16 1.8
Hexane 9.1 8.0 7/25/22 20:49 BRF32 4281.0 3.7
2-Hexanone (MBK)ND 0.20 7/25/22 20:49 BRFND40.820.10 0.41
Isopropanol ND 8.0 7/25/22 20:49 BRFND4201.4 3.4
Methyl tert-Butyl Ether (MTBE)ND 0.20 7/25/22 20:49 BRFND40.720.15 0.56
Methylene Chloride ND 2.0 7/25/22 20:49 BRFND46.90.93 3.2
4-Methyl-2-pentanone (MIBK)ND 0.20 7/25/22 20:49 BRFND40.820.11 0.44
Naphthalene ND 0.20 7/25/22 20:49 BRFND41.00.15 0.79
Propene ND 8.0 7/25/22 20:49 BRFND4141.8 3.0
Styrene ND 0.20 7/25/22 20:49 BRFND40.850.11 0.45
1,1,2,2-Tetrachloroethane ND 0.20 7/25/22 20:49 BRFND41.40.11 0.74
Page 22 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-07
Sample ID: 22G1156-10
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -30
Final Vacuum(in Hg): -4
Receipt Vacuum(in Hg): -3.6
Sampled: 7/18/2022 14:02
Canister ID: 2751
Flow Controller ID: 4113
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Tetrachloroethylene ND 0.20 7/25/22 20:49 BRFND41.40.15 1.0
Tetrahydrofuran 160 2.0 7/25/22 20:49 BRF470 45.90.33 0.97
Toluene 2.8 0.20 7/25/22 20:49 BRF10 40.750.11 0.43
1,2,4-Trichlorobenzene ND 0.20 7/25/22 20:49 BRFND41.50.19 1.4
1,1,1-Trichloroethane ND 0.20 7/25/22 20:49 BRFND41.10.16 0.86
1,1,2-Trichloroethane ND 0.20 7/25/22 20:49 BRFND41.10.14 0.77
Trichloroethylene ND 0.20 7/25/22 20:49 BRFND41.10.13 0.72
Trichlorofluoromethane (Freon 11)0.26 0.80 7/25/22 20:49 BRFJ1.4 44.50.24 1.3
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)ND 0.80 7/25/22 20:49 BRFND46.10.22 1.7
1,2,4-Trimethylbenzene 0.52 0.20 7/25/22 20:49 BRF2.6 40.980.088 0.43
1,3,5-Trimethylbenzene ND 0.20 7/25/22 20:49 BRFND40.980.11 0.52
Vinyl Acetate ND 4.0 7/25/22 20:49 BRFND4141.1 3.8
Vinyl Chloride ND 0.20 7/25/22 20:49 BRFND40.510.18 0.46
m&p-Xylene 0.50 0.40 7/25/22 20:49 BRF2.2 41.70.22 0.97
o-Xylene 0.24 0.20 7/25/22 20:49 BRF1.1 40.870.10 0.44
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1)97.7 7/25/22 20:4970-130
Page 23 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-08
Sample ID: 22G1156-11
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -29
Final Vacuum(in Hg): -6
Receipt Vacuum(in Hg): -7.5
Sampled: 7/18/2022 13:30
Canister ID: 2267
Flow Controller ID: 4350
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Acetone ND 8.0 7/25/22 22:47 BRFND4194.8 11
Benzene ND 0.20 7/25/22 22:47 BRFND40.640.15 0.48
Benzyl chloride ND 0.20 7/25/22 22:47 BRFND41.00.18 0.91
Bromodichloromethane ND 0.20 7/25/22 22:47 BRFND41.30.14 0.94
Bromoform ND 0.20 7/25/22 22:47 BRFND42.10.14 1.4
Bromomethane ND 0.20 7/25/22 22:47 BRFND40.780.13 0.52
1,3-Butadiene ND 0.20 7/25/22 22:47 BRFND40.440.17 0.37
2-Butanone (MEK)ND 8.0 7/25/22 22:47 BRFND4242.1 6.3
Carbon Disulfide 0.72 2.0 7/25/22 22:47 BRFJ2.3 46.20.18 0.58
Carbon Tetrachloride ND 0.20 7/25/22 22:47 BRFND41.30.16 1.0
Chlorobenzene ND 0.20 7/25/22 22:47 BRFND40.920.13 0.61
Chloroethane ND 0.20 7/25/22 22:47 BRFND40.530.18 0.47
Chloroform 0.81 0.20 7/25/22 22:47 BRF3.9 40.980.19 0.93
Chloromethane 0.24 0.40 7/25/22 22:47 BRFJ0.50 40.830.16 0.33
Cyclohexane ND 0.20 7/25/22 22:47 BRFND40.690.12 0.42
Dibromochloromethane ND 0.20 7/25/22 22:47 BRFND41.70.13 1.1
1,2-Dibromoethane (EDB)ND 0.20 7/25/22 22:47 BRFND41.50.12 0.93
1,2-Dichlorobenzene ND 0.20 7/25/22 22:47 BRFND41.20.11 0.69
1,3-Dichlorobenzene ND 0.20 7/25/22 22:47 BRFND41.20.11 0.67
1,4-Dichlorobenzene ND 0.20 7/25/22 22:47 BRFND41.20.13 0.79
Dichlorodifluoromethane (Freon 12)0.38 0.20 7/25/22 22:47 BRF1.9 40.990.20 0.97
1,1-Dichloroethane ND 0.20 7/25/22 22:47 BRFND40.810.17 0.71
1,2-Dichloroethane ND 0.20 7/25/22 22:47 BRFND40.810.18 0.73
1,1-Dichloroethylene ND 0.20 7/25/22 22:47 BRFND40.790.15 0.60
cis-1,2-Dichloroethylene ND 0.20 7/25/22 22:47 BRFND40.790.15 0.58
trans-1,2-Dichloroethylene ND 0.20 7/25/22 22:47 BRFND40.790.16 0.62
1,2-Dichloropropane ND 0.20 7/25/22 22:47 BRFND40.920.11 0.50
cis-1,3-Dichloropropene ND 0.20 7/25/22 22:47 BRFND40.910.10 0.47
trans-1,3-Dichloropropene ND 0.20 7/25/22 22:47 BRFND40.910.10 0.46
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)ND 0.20 7/25/22 22:47 BRFND41.40.20 1.4
1,4-Dioxane ND 2.0 7/25/22 22:47 BRFND47.20.17 0.60
Ethanol ND 8.0 7/25/22 22:47 BRFND4153.5 6.6
Ethyl Acetate ND 2.0 7/25/22 22:47 BRFND47.21.0 3.6
Ethylbenzene ND 0.20 7/25/22 22:47 BRFND40.870.12 0.51
4-Ethyltoluene ND 0.20 7/25/22 22:47 BRFND40.980.12 0.60
Heptane ND 0.20 7/25/22 22:47 BRFND40.820.13 0.52
Hexachlorobutadiene ND 0.20 7/25/22 22:47 BRFND42.10.16 1.8
Hexane ND 8.0 7/25/22 22:47 BRFND4281.0 3.7
2-Hexanone (MBK)ND 0.20 7/25/22 22:47 BRFND40.820.10 0.41
Isopropanol ND 8.0 7/25/22 22:47 BRFND4201.4 3.4
Methyl tert-Butyl Ether (MTBE)ND 0.20 7/25/22 22:47 BRFND40.720.15 0.56
Methylene Chloride ND 2.0 7/25/22 22:47 BRFND46.90.93 3.2
4-Methyl-2-pentanone (MIBK)ND 0.20 7/25/22 22:47 BRFND40.820.11 0.44
Naphthalene ND 0.20 7/25/22 22:47 BRFND41.00.15 0.79
Propene ND 8.0 7/25/22 22:47 BRFND4141.8 3.0
Styrene ND 0.20 7/25/22 22:47 BRFND40.850.11 0.45
1,1,2,2-Tetrachloroethane ND 0.20 7/25/22 22:47 BRFND41.40.11 0.74
Page 24 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-08
Sample ID: 22G1156-11
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -29
Final Vacuum(in Hg): -6
Receipt Vacuum(in Hg): -7.5
Sampled: 7/18/2022 13:30
Canister ID: 2267
Flow Controller ID: 4350
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Tetrachloroethylene 0.53 0.20 7/25/22 22:47 BRF3.6 41.40.15 1.0
Tetrahydrofuran 8.8 2.0 7/25/22 22:47 BRF26 45.90.33 0.97
Toluene 0.58 0.20 7/25/22 22:47 BRF2.2 40.750.11 0.43
1,2,4-Trichlorobenzene ND 0.20 7/25/22 22:47 BRFND41.50.19 1.4
1,1,1-Trichloroethane ND 0.20 7/25/22 22:47 BRFND41.10.16 0.86
1,1,2-Trichloroethane ND 0.20 7/25/22 22:47 BRFND41.10.14 0.77
Trichloroethylene ND 0.20 7/25/22 22:47 BRFND41.10.13 0.72
Trichlorofluoromethane (Freon 11)0.38 0.80 7/25/22 22:47 BRFJ2.1 44.50.24 1.3
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)ND 0.80 7/25/22 22:47 BRFND46.10.22 1.7
1,2,4-Trimethylbenzene 0.51 0.20 7/25/22 22:47 BRF2.5 40.980.088 0.43
1,3,5-Trimethylbenzene ND 0.20 7/25/22 22:47 BRFND40.980.11 0.52
Vinyl Acetate ND 4.0 7/25/22 22:47 BRFND4141.1 3.8
Vinyl Chloride ND 0.20 7/25/22 22:47 BRFND40.510.18 0.46
m&p-Xylene 0.37 0.40 7/25/22 22:47 BRFJ1.6 41.70.22 0.97
o-Xylene 0.18 0.20 7/25/22 22:47 BRFJ0.76 40.870.10 0.44
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1)97.7 7/25/22 22:4770-130
Page 25 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-05
Sample ID: 22G1156-12
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -29
Final Vacuum(in Hg): -6
Receipt Vacuum(in Hg): -7.6
Sampled: 7/18/2022 14:30
Canister ID: 2430
Flow Controller ID: 4352
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Acetone ND 8.0 7/25/22 23:27 BRFND4194.8 11
Benzene 1.5 0.20 7/25/22 23:27 BRF4.7 40.640.15 0.48
Benzyl chloride ND 0.20 7/25/22 23:27 BRFND41.00.18 0.91
Bromodichloromethane ND 0.20 7/25/22 23:27 BRFND41.30.14 0.94
Bromoform ND 0.20 7/25/22 23:27 BRFND42.10.14 1.4
Bromomethane ND 0.20 7/25/22 23:27 BRFND40.780.13 0.52
1,3-Butadiene ND 0.20 7/25/22 23:27 BRFND40.440.17 0.37
2-Butanone (MEK)ND 8.0 7/25/22 23:27 BRFND4242.1 6.3
Carbon Disulfide ND 2.0 7/25/22 23:27 BRFND46.20.18 0.58
Carbon Tetrachloride ND 0.20 7/25/22 23:27 BRFND41.30.16 1.0
Chlorobenzene ND 0.20 7/25/22 23:27 BRFND40.920.13 0.61
Chloroethane 0.87 0.20 7/25/22 23:27 BRF2.3 40.530.18 0.47
Chloroform ND 0.20 7/25/22 23:27 BRFND40.980.19 0.93
Chloromethane 1.3 0.40 7/25/22 23:27 BRF2.6 40.830.16 0.33
Cyclohexane 2.9 0.20 7/25/22 23:27 BRF9.9 40.690.12 0.42
Dibromochloromethane ND 0.20 7/25/22 23:27 BRFND41.70.13 1.1
1,2-Dibromoethane (EDB)ND 0.20 7/25/22 23:27 BRFND41.50.12 0.93
1,2-Dichlorobenzene ND 0.20 7/25/22 23:27 BRFND41.20.11 0.69
1,3-Dichlorobenzene ND 0.20 7/25/22 23:27 BRFND41.20.11 0.67
1,4-Dichlorobenzene ND 0.20 7/25/22 23:27 BRFND41.20.13 0.79
Dichlorodifluoromethane (Freon 12)0.37 0.20 7/25/22 23:27 BRF1.8 40.990.20 0.97
1,1-Dichloroethane ND 0.20 7/25/22 23:27 BRFND40.810.17 0.71
1,2-Dichloroethane ND 0.20 7/25/22 23:27 BRFND40.810.18 0.73
1,1-Dichloroethylene ND 0.20 7/25/22 23:27 BRFND40.790.15 0.60
cis-1,2-Dichloroethylene ND 0.20 7/25/22 23:27 BRFND40.790.15 0.58
trans-1,2-Dichloroethylene ND 0.20 7/25/22 23:27 BRFND40.790.16 0.62
1,2-Dichloropropane ND 0.20 7/25/22 23:27 BRFND40.920.11 0.50
cis-1,3-Dichloropropene ND 0.20 7/25/22 23:27 BRFND40.910.10 0.47
trans-1,3-Dichloropropene ND 0.20 7/25/22 23:27 BRFND40.910.10 0.46
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)ND 0.20 7/25/22 23:27 BRFND41.40.20 1.4
1,4-Dioxane ND 2.0 7/25/22 23:27 BRFND47.20.17 0.60
Ethanol 4.0 8.0 7/25/22 23:27 BRFJ7.6 4153.5 6.6
Ethyl Acetate ND 2.0 7/25/22 23:27 BRFND47.21.0 3.6
Ethylbenzene 0.16 0.20 7/25/22 23:27 BRFJ0.69 40.870.12 0.51
4-Ethyltoluene ND 0.20 7/25/22 23:27 BRFND40.980.12 0.60
Heptane ND 0.20 7/25/22 23:27 BRFND40.820.13 0.52
Hexachlorobutadiene ND 0.20 7/25/22 23:27 BRFND42.10.16 1.8
Hexane 6.3 8.0 7/25/22 23:27 BRFJ22 4281.0 3.7
2-Hexanone (MBK)ND 0.20 7/25/22 23:27 BRFND40.820.10 0.41
Isopropanol ND 8.0 7/25/22 23:27 BRFND4201.4 3.4
Methyl tert-Butyl Ether (MTBE)ND 0.20 7/25/22 23:27 BRFND40.720.15 0.56
Methylene Chloride ND 2.0 7/25/22 23:27 BRFND46.90.93 3.2
4-Methyl-2-pentanone (MIBK)ND 0.20 7/25/22 23:27 BRFND40.820.11 0.44
Naphthalene ND 0.20 7/25/22 23:27 BRFND41.00.15 0.79
Propene 1.9 8.0 7/25/22 23:27 BRFJ3.2 4141.8 3.0
Styrene ND 0.20 7/25/22 23:27 BRFND40.850.11 0.45
1,1,2,2-Tetrachloroethane ND 0.20 7/25/22 23:27 BRFND41.40.11 0.74
Page 26 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-05
Sample ID: 22G1156-12
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -29
Final Vacuum(in Hg): -6
Receipt Vacuum(in Hg): -7.6
Sampled: 7/18/2022 14:30
Canister ID: 2430
Flow Controller ID: 4352
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Tetrachloroethylene ND 0.20 7/25/22 23:27 BRFND41.40.15 1.0
Tetrahydrofuran ND 2.0 7/25/22 23:27 BRFND45.90.33 0.97
Toluene 1.3 0.20 7/25/22 23:27 BRF4.9 40.750.11 0.43
1,2,4-Trichlorobenzene ND 0.20 7/25/22 23:27 BRFND41.50.19 1.4
1,1,1-Trichloroethane ND 0.20 7/25/22 23:27 BRFND41.10.16 0.86
1,1,2-Trichloroethane ND 0.20 7/25/22 23:27 BRFND41.10.14 0.77
Trichloroethylene ND 0.20 7/25/22 23:27 BRFND41.10.13 0.72
Trichlorofluoromethane (Freon 11)0.26 0.80 7/25/22 23:27 BRFJ1.4 44.50.24 1.3
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)ND 0.80 7/25/22 23:27 BRFND46.10.22 1.7
1,2,4-Trimethylbenzene 0.76 0.20 7/25/22 23:27 BRF3.7 40.980.088 0.43
1,3,5-Trimethylbenzene 0.12 0.20 7/25/22 23:27 BRFJ0.61 40.980.11 0.52
Vinyl Acetate ND 4.0 7/25/22 23:27 BRFND4141.1 3.8
Vinyl Chloride ND 0.20 7/25/22 23:27 BRFND40.510.18 0.46
m&p-Xylene 0.67 0.40 7/25/22 23:27 BRF2.9 41.70.22 0.97
o-Xylene 0.41 0.20 7/25/22 23:27 BRF1.8 40.870.10 0.44
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1)98.0 7/25/22 23:2770-130
Page 27 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-01
Sample ID: 22G1156-13
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -27
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -7.4
Sampled: 7/18/2022 15:55
Canister ID: 2574
Flow Controller ID: 4330
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Acetone ND 8.0 7/26/22 0:47 BRFND4194.8 11
Benzene ND 0.20 7/26/22 0:47 BRFND40.640.15 0.48
Benzyl chloride ND 0.20 7/26/22 0:47 BRFND41.00.18 0.91
Bromodichloromethane ND 0.20 7/26/22 0:47 BRFND41.30.14 0.94
Bromoform ND 0.20 7/26/22 0:47 BRFND42.10.14 1.4
Bromomethane ND 0.20 7/26/22 0:47 BRFND40.780.13 0.52
1,3-Butadiene ND 0.20 7/26/22 0:47 BRFND40.440.17 0.37
2-Butanone (MEK)ND 8.0 7/26/22 0:47 BRFND4242.1 6.3
Carbon Disulfide 0.40 2.0 7/26/22 0:47 BRFJ1.3 46.20.18 0.58
Carbon Tetrachloride ND 0.20 7/26/22 0:47 BRFND41.30.16 1.0
Chlorobenzene ND 0.20 7/26/22 0:47 BRFND40.920.13 0.61
Chloroethane ND 0.20 7/26/22 0:47 BRFND40.530.18 0.47
Chloroform 4.3 0.20 7/26/22 0:47 BRF21 40.980.19 0.93
Chloromethane 0.43 0.40 7/26/22 0:47 BRF0.88 40.830.16 0.33
Cyclohexane ND 0.20 7/26/22 0:47 BRFND40.690.12 0.42
Dibromochloromethane ND 0.20 7/26/22 0:47 BRFND41.70.13 1.1
1,2-Dibromoethane (EDB)ND 0.20 7/26/22 0:47 BRFND41.50.12 0.93
1,2-Dichlorobenzene ND 0.20 7/26/22 0:47 BRFND41.20.11 0.69
1,3-Dichlorobenzene ND 0.20 7/26/22 0:47 BRFND41.20.11 0.67
1,4-Dichlorobenzene ND 0.20 7/26/22 0:47 BRFND41.20.13 0.79
Dichlorodifluoromethane (Freon 12)0.35 0.20 7/26/22 0:47 BRF1.7 40.990.20 0.97
1,1-Dichloroethane ND 0.20 7/26/22 0:47 BRFND40.810.17 0.71
1,2-Dichloroethane ND 0.20 7/26/22 0:47 BRFND40.810.18 0.73
1,1-Dichloroethylene ND 0.20 7/26/22 0:47 BRFND40.790.15 0.60
cis-1,2-Dichloroethylene ND 0.20 7/26/22 0:47 BRFND40.790.15 0.58
trans-1,2-Dichloroethylene ND 0.20 7/26/22 0:47 BRFND40.790.16 0.62
1,2-Dichloropropane ND 0.20 7/26/22 0:47 BRFND40.920.11 0.50
cis-1,3-Dichloropropene ND 0.20 7/26/22 0:47 BRFND40.910.10 0.47
trans-1,3-Dichloropropene ND 0.20 7/26/22 0:47 BRFND40.910.10 0.46
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)ND 0.20 7/26/22 0:47 BRFND41.40.20 1.4
1,4-Dioxane ND 2.0 7/26/22 0:47 BRFND47.20.17 0.60
Ethanol 9.3 8.0 7/26/22 0:47 BRF18 4153.5 6.6
Ethyl Acetate ND 2.0 7/26/22 0:47 BRFND47.21.0 3.6
Ethylbenzene 0.22 0.20 7/26/22 0:47 BRF0.96 40.870.12 0.51
4-Ethyltoluene 0.27 0.20 7/26/22 0:47 BRF1.3 40.980.12 0.60
Heptane ND 0.20 7/26/22 0:47 BRFND40.820.13 0.52
Hexachlorobutadiene ND 0.20 7/26/22 0:47 BRFND42.10.16 1.8
Hexane ND 8.0 7/26/22 0:47 BRFND4281.0 3.7
2-Hexanone (MBK)ND 0.20 7/26/22 0:47 BRFND40.820.10 0.41
Isopropanol 1.9 8.0 7/26/22 0:47 BRFJ4.7 4201.4 3.4
Methyl tert-Butyl Ether (MTBE)ND 0.20 7/26/22 0:47 BRFND40.720.15 0.56
Methylene Chloride ND 2.0 7/26/22 0:47 BRFND46.90.93 3.2
4-Methyl-2-pentanone (MIBK)ND 0.20 7/26/22 0:47 BRFND40.820.11 0.44
Naphthalene ND 0.20 7/26/22 0:47 BRFND41.00.15 0.79
Propene ND 8.0 7/26/22 0:47 BRFND4141.8 3.0
Styrene 0.13 0.20 7/26/22 0:47 BRFJ0.55 40.850.11 0.45
1,1,2,2-Tetrachloroethane ND 0.20 7/26/22 0:47 BRFND41.40.11 0.74
Page 28 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-01
Sample ID: 22G1156-13
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -27
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -7.4
Sampled: 7/18/2022 15:55
Canister ID: 2574
Flow Controller ID: 4330
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Tetrachloroethylene 0.24 0.20 7/26/22 0:47 BRF1.7 41.40.15 1.0
Tetrahydrofuran ND 2.0 7/26/22 0:47 BRFND45.90.33 0.97
Toluene 1.4 0.20 7/26/22 0:47 BRF5.4 40.750.11 0.43
1,2,4-Trichlorobenzene ND 0.20 7/26/22 0:47 BRFND41.50.19 1.4
1,1,1-Trichloroethane ND 0.20 7/26/22 0:47 BRFND41.10.16 0.86
1,1,2-Trichloroethane ND 0.20 7/26/22 0:47 BRFND41.10.14 0.77
Trichloroethylene ND 0.20 7/26/22 0:47 BRFND41.10.13 0.72
Trichlorofluoromethane (Freon 11)0.30 0.80 7/26/22 0:47 BRFJ1.7 44.50.24 1.3
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)ND 0.80 7/26/22 0:47 BRFND46.10.22 1.7
1,2,4-Trimethylbenzene 1.1 0.20 7/26/22 0:47 BRF5.5 40.980.088 0.43
1,3,5-Trimethylbenzene 0.25 0.20 7/26/22 0:47 BRF1.2 40.980.11 0.52
Vinyl Acetate ND 4.0 7/26/22 0:47 BRFND4141.1 3.8
Vinyl Chloride ND 0.20 7/26/22 0:47 BRFND40.510.18 0.46
m&p-Xylene 0.90 0.40 7/26/22 0:47 BRF3.9 41.70.22 0.97
o-Xylene 0.44 0.20 7/26/22 0:47 BRF1.9 40.870.10 0.44
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1)97.8 7/26/22 0:4770-130
Page 29 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-06
Sample ID: 22G1156-14
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -29
Final Vacuum(in Hg): -5.5
Receipt Vacuum(in Hg): -7.1
Sampled: 7/18/2022 14:11
Canister ID: 2611
Flow Controller ID: 4340
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Acetone ND 8.0 7/26/22 1:28 BRFND4194.8 11
Benzene ND 0.20 7/26/22 1:28 BRFND40.640.15 0.48
Benzyl chloride ND 0.20 7/26/22 1:28 BRFND41.00.18 0.91
Bromodichloromethane ND 0.20 7/26/22 1:28 BRFND41.30.14 0.94
Bromoform ND 0.20 7/26/22 1:28 BRFND42.10.14 1.4
Bromomethane ND 0.20 7/26/22 1:28 BRFND40.780.13 0.52
1,3-Butadiene ND 0.20 7/26/22 1:28 BRFND40.440.17 0.37
2-Butanone (MEK)ND 8.0 7/26/22 1:28 BRFND4242.1 6.3
Carbon Disulfide 0.78 2.0 7/26/22 1:28 BRFJ2.4 46.20.18 0.58
Carbon Tetrachloride ND 0.20 7/26/22 1:28 BRFND41.30.16 1.0
Chlorobenzene ND 0.20 7/26/22 1:28 BRFND40.920.13 0.61
Chloroethane ND 0.20 7/26/22 1:28 BRFND40.530.18 0.47
Chloroform ND 0.20 7/26/22 1:28 BRFND40.980.19 0.93
Chloromethane ND 0.40 7/26/22 1:28 BRFND40.830.16 0.33
Cyclohexane ND 0.20 7/26/22 1:28 BRFND40.690.12 0.42
Dibromochloromethane ND 0.20 7/26/22 1:28 BRFND41.70.13 1.1
1,2-Dibromoethane (EDB)ND 0.20 7/26/22 1:28 BRFND41.50.12 0.93
1,2-Dichlorobenzene ND 0.20 7/26/22 1:28 BRFND41.20.11 0.69
1,3-Dichlorobenzene ND 0.20 7/26/22 1:28 BRFND41.20.11 0.67
1,4-Dichlorobenzene ND 0.20 7/26/22 1:28 BRFND41.20.13 0.79
Dichlorodifluoromethane (Freon 12)0.36 0.20 7/26/22 1:28 BRF1.8 40.990.20 0.97
1,1-Dichloroethane ND 0.20 7/26/22 1:28 BRFND40.810.17 0.71
1,2-Dichloroethane ND 0.20 7/26/22 1:28 BRFND40.810.18 0.73
1,1-Dichloroethylene ND 0.20 7/26/22 1:28 BRFND40.790.15 0.60
cis-1,2-Dichloroethylene ND 0.20 7/26/22 1:28 BRFND40.790.15 0.58
trans-1,2-Dichloroethylene ND 0.20 7/26/22 1:28 BRFND40.790.16 0.62
1,2-Dichloropropane ND 0.20 7/26/22 1:28 BRFND40.920.11 0.50
cis-1,3-Dichloropropene ND 0.20 7/26/22 1:28 BRFND40.910.10 0.47
trans-1,3-Dichloropropene ND 0.20 7/26/22 1:28 BRFND40.910.10 0.46
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)ND 0.20 7/26/22 1:28 BRFND41.40.20 1.4
1,4-Dioxane ND 2.0 7/26/22 1:28 BRFND47.20.17 0.60
Ethanol 5.6 8.0 7/26/22 1:28 BRFJ11 4153.5 6.6
Ethyl Acetate ND 2.0 7/26/22 1:28 BRFND47.21.0 3.6
Ethylbenzene ND 0.20 7/26/22 1:28 BRFND40.870.12 0.51
4-Ethyltoluene ND 0.20 7/26/22 1:28 BRFND40.980.12 0.60
Heptane ND 0.20 7/26/22 1:28 BRFND40.820.13 0.52
Hexachlorobutadiene ND 0.20 7/26/22 1:28 BRFND42.10.16 1.8
Hexane ND 8.0 7/26/22 1:28 BRFND4281.0 3.7
2-Hexanone (MBK)ND 0.20 7/26/22 1:28 BRFND40.820.10 0.41
Isopropanol 10 8.0 7/26/22 1:28 BRF25 4201.4 3.4
Methyl tert-Butyl Ether (MTBE)ND 0.20 7/26/22 1:28 BRFND40.720.15 0.56
Methylene Chloride ND 2.0 7/26/22 1:28 BRFND46.90.93 3.2
4-Methyl-2-pentanone (MIBK)ND 0.20 7/26/22 1:28 BRFND40.820.11 0.44
Naphthalene ND 0.20 7/26/22 1:28 BRFND41.00.15 0.79
Propene ND 8.0 7/26/22 1:28 BRFND4141.8 3.0
Styrene ND 0.20 7/26/22 1:28 BRFND40.850.11 0.45
1,1,2,2-Tetrachloroethane ND 0.20 7/26/22 1:28 BRFND41.40.11 0.74
Page 30 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-06
Sample ID: 22G1156-14
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -29
Final Vacuum(in Hg): -5.5
Receipt Vacuum(in Hg): -7.1
Sampled: 7/18/2022 14:11
Canister ID: 2611
Flow Controller ID: 4340
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Tetrachloroethylene 0.43 0.20 7/26/22 1:28 BRF2.9 41.40.15 1.0
Tetrahydrofuran ND 2.0 7/26/22 1:28 BRFND45.90.33 0.97
Toluene 0.55 0.20 7/26/22 1:28 BRF2.1 40.750.11 0.43
1,2,4-Trichlorobenzene ND 0.20 7/26/22 1:28 BRFND41.50.19 1.4
1,1,1-Trichloroethane ND 0.20 7/26/22 1:28 BRFND41.10.16 0.86
1,1,2-Trichloroethane ND 0.20 7/26/22 1:28 BRFND41.10.14 0.77
Trichloroethylene ND 0.20 7/26/22 1:28 BRFND41.10.13 0.72
Trichlorofluoromethane (Freon 11)0.35 0.80 7/26/22 1:28 BRFJ2.0 44.50.24 1.3
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)ND 0.80 7/26/22 1:28 BRFND46.10.22 1.7
1,2,4-Trimethylbenzene 0.23 0.20 7/26/22 1:28 BRF1.1 40.980.088 0.43
1,3,5-Trimethylbenzene ND 0.20 7/26/22 1:28 BRFND40.980.11 0.52
Vinyl Acetate ND 4.0 7/26/22 1:28 BRFND4141.1 3.8
Vinyl Chloride ND 0.20 7/26/22 1:28 BRFND40.510.18 0.46
m&p-Xylene 0.26 0.40 7/26/22 1:28 BRFJ1.1 41.70.22 0.97
o-Xylene 0.14 0.20 7/26/22 1:28 BRFJ0.59 40.870.10 0.44
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1)98.0 7/26/22 1:2870-130
Page 31 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-04
Sample ID: 22G1156-15
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -29
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -6.5
Sampled: 7/18/2022 15:05
Canister ID: 2415
Flow Controller ID: 4332
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Acetone ND 8.0 7/26/22 2:10 BRFND4194.8 11
Benzene ND 0.20 7/26/22 2:10 BRFND40.640.15 0.48
Benzyl chloride ND 0.20 7/26/22 2:10 BRFND41.00.18 0.91
Bromodichloromethane ND 0.20 7/26/22 2:10 BRFND41.30.14 0.94
Bromoform ND 0.20 7/26/22 2:10 BRFND42.10.14 1.4
Bromomethane ND 0.20 7/26/22 2:10 BRFND40.780.13 0.52
1,3-Butadiene ND 0.20 7/26/22 2:10 BRFND40.440.17 0.37
2-Butanone (MEK)ND 8.0 7/26/22 2:10 BRFND4242.1 6.3
Carbon Disulfide 1.0 2.0 7/26/22 2:10 BRFJ3.2 46.20.18 0.58
Carbon Tetrachloride ND 0.20 7/26/22 2:10 BRFND41.30.16 1.0
Chlorobenzene ND 0.20 7/26/22 2:10 BRFND40.920.13 0.61
Chloroethane ND 0.20 7/26/22 2:10 BRFND40.530.18 0.47
Chloroform 1.1 0.20 7/26/22 2:10 BRF5.3 40.980.19 0.93
Chloromethane ND 0.40 7/26/22 2:10 BRFND40.830.16 0.33
Cyclohexane ND 0.20 7/26/22 2:10 BRFND40.690.12 0.42
Dibromochloromethane ND 0.20 7/26/22 2:10 BRFND41.70.13 1.1
1,2-Dibromoethane (EDB)ND 0.20 7/26/22 2:10 BRFND41.50.12 0.93
1,2-Dichlorobenzene ND 0.20 7/26/22 2:10 BRFND41.20.11 0.69
1,3-Dichlorobenzene 0.32 0.20 7/26/22 2:10 BRF1.9 41.20.11 0.67
1,4-Dichlorobenzene ND 0.20 7/26/22 2:10 BRFND41.20.13 0.79
Dichlorodifluoromethane (Freon 12)0.38 0.20 7/26/22 2:10 BRF1.9 40.990.20 0.97
1,1-Dichloroethane ND 0.20 7/26/22 2:10 BRFND40.810.17 0.71
1,2-Dichloroethane ND 0.20 7/26/22 2:10 BRFND40.810.18 0.73
1,1-Dichloroethylene ND 0.20 7/26/22 2:10 BRFND40.790.15 0.60
cis-1,2-Dichloroethylene ND 0.20 7/26/22 2:10 BRFND40.790.15 0.58
trans-1,2-Dichloroethylene ND 0.20 7/26/22 2:10 BRFND40.790.16 0.62
1,2-Dichloropropane ND 0.20 7/26/22 2:10 BRFND40.920.11 0.50
cis-1,3-Dichloropropene ND 0.20 7/26/22 2:10 BRFND40.910.10 0.47
trans-1,3-Dichloropropene ND 0.20 7/26/22 2:10 BRFND40.910.10 0.46
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)ND 0.20 7/26/22 2:10 BRFND41.40.20 1.4
1,4-Dioxane ND 2.0 7/26/22 2:10 BRFND47.20.17 0.60
Ethanol ND 8.0 7/26/22 2:10 BRFND4153.5 6.6
Ethyl Acetate ND 2.0 7/26/22 2:10 BRFND47.21.0 3.6
Ethylbenzene ND 0.20 7/26/22 2:10 BRFND40.870.12 0.51
4-Ethyltoluene ND 0.20 7/26/22 2:10 BRFND40.980.12 0.60
Heptane ND 0.20 7/26/22 2:10 BRFND40.820.13 0.52
Hexachlorobutadiene ND 0.20 7/26/22 2:10 BRFND42.10.16 1.8
Hexane ND 8.0 7/26/22 2:10 BRFND4281.0 3.7
2-Hexanone (MBK)ND 0.20 7/26/22 2:10 BRFND40.820.10 0.41
Isopropanol ND 8.0 7/26/22 2:10 BRFND4201.4 3.4
Methyl tert-Butyl Ether (MTBE)ND 0.20 7/26/22 2:10 BRFND40.720.15 0.56
Methylene Chloride ND 2.0 7/26/22 2:10 BRFND46.90.93 3.2
4-Methyl-2-pentanone (MIBK)ND 0.20 7/26/22 2:10 BRFND40.820.11 0.44
Naphthalene ND 0.20 7/26/22 2:10 BRFND41.00.15 0.79
Propene ND 8.0 7/26/22 2:10 BRFND4141.8 3.0
Styrene ND 0.20 7/26/22 2:10 BRFND40.850.11 0.45
1,1,2,2-Tetrachloroethane ND 0.20 7/26/22 2:10 BRFND41.40.11 0.74
Page 32 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-04
Sample ID: 22G1156-15
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -29
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -6.5
Sampled: 7/18/2022 15:05
Canister ID: 2415
Flow Controller ID: 4332
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Tetrachloroethylene ND 0.20 7/26/22 2:10 BRFND41.40.15 1.0
Tetrahydrofuran 0.46 2.0 7/26/22 2:10 BRFJ1.4 45.90.33 0.97
Toluene 0.62 0.20 7/26/22 2:10 BRF2.3 40.750.11 0.43
1,2,4-Trichlorobenzene ND 0.20 7/26/22 2:10 BRFND41.50.19 1.4
1,1,1-Trichloroethane ND 0.20 7/26/22 2:10 BRFND41.10.16 0.86
1,1,2-Trichloroethane ND 0.20 7/26/22 2:10 BRFND41.10.14 0.77
Trichloroethylene ND 0.20 7/26/22 2:10 BRFND41.10.13 0.72
Trichlorofluoromethane (Freon 11)0.30 0.80 7/26/22 2:10 BRFJ1.7 44.50.24 1.3
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)ND 0.80 7/26/22 2:10 BRFND46.10.22 1.7
1,2,4-Trimethylbenzene 0.53 0.20 7/26/22 2:10 BRF2.6 40.980.088 0.43
1,3,5-Trimethylbenzene ND 0.20 7/26/22 2:10 BRFND40.980.11 0.52
Vinyl Acetate ND 4.0 7/26/22 2:10 BRFND4141.1 3.8
Vinyl Chloride ND 0.20 7/26/22 2:10 BRFND40.510.18 0.46
m&p-Xylene 0.35 0.40 7/26/22 2:10 BRFJ1.5 41.70.22 0.97
o-Xylene 0.17 0.20 7/26/22 2:10 BRFJ0.73 40.870.10 0.44
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1)99.6 7/26/22 2:1070-130
Page 33 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-14
Sample ID: 22G1156-16
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -30
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -5.6
Sampled: 7/18/2022 11:15
Canister ID: 2364
Flow Controller ID: 4339
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Acetone 5.0 8.0 7/26/22 2:52 BRFJ12 4194.8 11
Benzene ND 0.20 7/26/22 2:52 BRFND40.640.15 0.48
Benzyl chloride ND 0.20 7/26/22 2:52 BRFND41.00.18 0.91
Bromodichloromethane 1.2 0.20 7/26/22 2:52 BRF8.0 41.30.14 0.94
Bromoform ND 0.20 7/26/22 2:52 BRFND42.10.14 1.4
Bromomethane ND 0.20 7/26/22 2:52 BRFND40.780.13 0.52
1,3-Butadiene ND 0.20 7/26/22 2:52 BRFND40.440.17 0.37
2-Butanone (MEK)ND 8.0 7/26/22 2:52 BRFND4242.1 6.3
Carbon Disulfide 1.3 2.0 7/26/22 2:52 BRFJ4.2 46.20.18 0.58
Carbon Tetrachloride ND 0.20 7/26/22 2:52 BRFND41.30.16 1.0
Chlorobenzene ND 0.20 7/26/22 2:52 BRFND40.920.13 0.61
Chloroethane ND 0.20 7/26/22 2:52 BRFND40.530.18 0.47
Chloroform 14 0.20 7/26/22 2:52 BRF69 40.980.19 0.93
Chloromethane 0.51 0.40 7/26/22 2:52 BRF1.1 40.830.16 0.33
Cyclohexane ND 0.20 7/26/22 2:52 BRFND40.690.12 0.42
Dibromochloromethane ND 0.20 7/26/22 2:52 BRFND41.70.13 1.1
1,2-Dibromoethane (EDB)ND 0.20 7/26/22 2:52 BRFND41.50.12 0.93
1,2-Dichlorobenzene ND 0.20 7/26/22 2:52 BRFND41.20.11 0.69
1,3-Dichlorobenzene ND 0.20 7/26/22 2:52 BRFND41.20.11 0.67
1,4-Dichlorobenzene ND 0.20 7/26/22 2:52 BRFND41.20.13 0.79
Dichlorodifluoromethane (Freon 12)0.36 0.20 7/26/22 2:52 BRF1.8 40.990.20 0.97
1,1-Dichloroethane ND 0.20 7/26/22 2:52 BRFND40.810.17 0.71
1,2-Dichloroethane ND 0.20 7/26/22 2:52 BRFND40.810.18 0.73
1,1-Dichloroethylene ND 0.20 7/26/22 2:52 BRFND40.790.15 0.60
cis-1,2-Dichloroethylene ND 0.20 7/26/22 2:52 BRFND40.790.15 0.58
trans-1,2-Dichloroethylene ND 0.20 7/26/22 2:52 BRFND40.790.16 0.62
1,2-Dichloropropane ND 0.20 7/26/22 2:52 BRFND40.920.11 0.50
cis-1,3-Dichloropropene ND 0.20 7/26/22 2:52 BRFND40.910.10 0.47
trans-1,3-Dichloropropene ND 0.20 7/26/22 2:52 BRFND40.910.10 0.46
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)ND 0.20 7/26/22 2:52 BRFND41.40.20 1.4
1,4-Dioxane ND 2.0 7/26/22 2:52 BRFND47.20.17 0.60
Ethanol ND 8.0 7/26/22 2:52 BRFND4153.5 6.6
Ethyl Acetate ND 2.0 7/26/22 2:52 BRFND47.21.0 3.6
Ethylbenzene ND 0.20 7/26/22 2:52 BRFND40.870.12 0.51
4-Ethyltoluene ND 0.20 7/26/22 2:52 BRFND40.980.12 0.60
Heptane ND 0.20 7/26/22 2:52 BRFND40.820.13 0.52
Hexachlorobutadiene ND 0.20 7/26/22 2:52 BRFND42.10.16 1.8
Hexane ND 8.0 7/26/22 2:52 BRFND4281.0 3.7
2-Hexanone (MBK)ND 0.20 7/26/22 2:52 BRFND40.820.10 0.41
Isopropanol ND 8.0 7/26/22 2:52 BRFND4201.4 3.4
Methyl tert-Butyl Ether (MTBE)ND 0.20 7/26/22 2:52 BRFND40.720.15 0.56
Methylene Chloride ND 2.0 7/26/22 2:52 BRFND46.90.93 3.2
4-Methyl-2-pentanone (MIBK)ND 0.20 7/26/22 2:52 BRFND40.820.11 0.44
Naphthalene ND 0.20 7/26/22 2:52 BRFND41.00.15 0.79
Propene ND 8.0 7/26/22 2:52 BRFND4141.8 3.0
Styrene ND 0.20 7/26/22 2:52 BRFND40.850.11 0.45
1,1,2,2-Tetrachloroethane ND 0.20 7/26/22 2:52 BRFND41.40.11 0.74
Page 34 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-14
Sample ID: 22G1156-16
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -30
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -5.6
Sampled: 7/18/2022 11:15
Canister ID: 2364
Flow Controller ID: 4339
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Tetrachloroethylene 0.51 0.20 7/26/22 2:52 BRF3.5 41.40.15 1.0
Tetrahydrofuran 0.72 2.0 7/26/22 2:52 BRFJ2.1 45.90.33 0.97
Toluene 0.35 0.20 7/26/22 2:52 BRF1.3 40.750.11 0.43
1,2,4-Trichlorobenzene ND 0.20 7/26/22 2:52 BRFND41.50.19 1.4
1,1,1-Trichloroethane ND 0.20 7/26/22 2:52 BRFND41.10.16 0.86
1,1,2-Trichloroethane ND 0.20 7/26/22 2:52 BRFND41.10.14 0.77
Trichloroethylene ND 0.20 7/26/22 2:52 BRFND41.10.13 0.72
Trichlorofluoromethane (Freon 11)1.2 0.80 7/26/22 2:52 BRF6.9 44.50.24 1.3
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)ND 0.80 7/26/22 2:52 BRFND46.10.22 1.7
1,2,4-Trimethylbenzene 0.58 0.20 7/26/22 2:52 BRF2.9 40.980.088 0.43
1,3,5-Trimethylbenzene ND 0.20 7/26/22 2:52 BRFND40.980.11 0.52
Vinyl Acetate ND 4.0 7/26/22 2:52 BRFND4141.1 3.8
Vinyl Chloride ND 0.20 7/26/22 2:52 BRFND40.510.18 0.46
m&p-Xylene ND 0.40 7/26/22 2:52 BRFND41.70.22 0.97
o-Xylene 0.10 0.20 7/26/22 2:52 BRFJ0.45 40.870.10 0.44
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1)99.6 7/26/22 2:5270-130
Page 35 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-13
Sample ID: 22G1156-17
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -27
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -7.7
Sampled: 7/18/2022 17:30
Canister ID: 2401
Flow Controller ID: 4329
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Acetone 260 20 7/26/22 6:46 BRF620 10481229
Benzene 0.18 0.20 7/26/22 3:34 BRFJ0.58 40.640.15 0.48
Benzyl chloride ND 0.20 7/26/22 3:34 BRFND41.00.18 0.91
Bromodichloromethane 0.57 0.20 7/26/22 3:34 BRF3.8 41.30.14 0.94
Bromoform ND 0.20 7/26/22 3:34 BRFND42.10.14 1.4
Bromomethane ND 0.20 7/26/22 3:34 BRFND40.780.13 0.52
1,3-Butadiene ND 0.20 7/26/22 3:34 BRFND40.440.17 0.37
2-Butanone (MEK)18 8.0 7/26/22 3:34 BRF54 4242.1 6.3
Carbon Disulfide 0.82 2.0 7/26/22 3:34 BRFJ2.6 46.20.18 0.58
Carbon Tetrachloride ND 0.20 7/26/22 3:34 BRFND41.30.16 1.0
Chlorobenzene ND 0.20 7/26/22 3:34 BRFND40.920.13 0.61
Chloroethane ND 0.20 7/26/22 3:34 BRFND40.530.18 0.47
Chloroform 4.3 0.20 7/26/22 3:34 BRF21 40.980.19 0.93
Chloromethane 0.37 0.40 7/26/22 3:34 BRFJ0.76 40.830.16 0.33
Cyclohexane ND 0.20 7/26/22 3:34 BRFND40.690.12 0.42
Dibromochloromethane ND 0.20 7/26/22 3:34 BRFND41.70.13 1.1
1,2-Dibromoethane (EDB)ND 0.20 7/26/22 3:34 BRFND41.50.12 0.93
1,2-Dichlorobenzene ND 0.20 7/26/22 3:34 BRFND41.20.11 0.69
1,3-Dichlorobenzene ND 0.20 7/26/22 3:34 BRFND41.20.11 0.67
1,4-Dichlorobenzene ND 0.20 7/26/22 3:34 BRFND41.20.13 0.79
Dichlorodifluoromethane (Freon 12)0.36 0.20 7/26/22 3:34 BRF1.8 40.990.20 0.97
1,1-Dichloroethane ND 0.20 7/26/22 3:34 BRFND40.810.17 0.71
1,2-Dichloroethane ND 0.20 7/26/22 3:34 BRFND40.810.18 0.73
1,1-Dichloroethylene ND 0.20 7/26/22 3:34 BRFND40.790.15 0.60
cis-1,2-Dichloroethylene ND 0.20 7/26/22 3:34 BRFND40.790.15 0.58
trans-1,2-Dichloroethylene ND 0.20 7/26/22 3:34 BRFND40.790.16 0.62
1,2-Dichloropropane ND 0.20 7/26/22 3:34 BRFND40.920.11 0.50
cis-1,3-Dichloropropene ND 0.20 7/26/22 3:34 BRFND40.910.10 0.47
trans-1,3-Dichloropropene ND 0.20 7/26/22 3:34 BRFND40.910.10 0.46
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)ND 0.20 7/26/22 3:34 BRFND41.40.20 1.4
1,4-Dioxane ND 2.0 7/26/22 3:34 BRFND47.20.17 0.60
Ethanol 91 8.0 7/26/22 3:34 BRF170 4153.5 6.6
Ethyl Acetate ND 2.0 7/26/22 3:34 BRFND47.21.0 3.6
Ethylbenzene 0.29 0.20 7/26/22 3:34 BRF1.3 40.870.12 0.51
4-Ethyltoluene 0.28 0.20 7/26/22 3:34 BRF1.4 40.980.12 0.60
Heptane ND 0.20 7/26/22 3:34 BRFND40.820.13 0.52
Hexachlorobutadiene ND 0.20 7/26/22 3:34 BRFND42.10.16 1.8
Hexane ND 8.0 7/26/22 3:34 BRFND4281.0 3.7
2-Hexanone (MBK)ND 0.20 7/26/22 3:34 BRFND40.820.10 0.41
Isopropanol 4.5 8.0 7/26/22 3:34 BRFJ11 4201.4 3.4
Methyl tert-Butyl Ether (MTBE)ND 0.20 7/26/22 3:34 BRFND40.720.15 0.56
Methylene Chloride ND 2.0 7/26/22 3:34 BRFND46.90.93 3.2
4-Methyl-2-pentanone (MIBK)0.76 0.20 7/26/22 3:34 BRF3.1 40.820.11 0.44
Naphthalene ND 0.20 7/26/22 3:34 BRFND41.00.15 0.79
Propene ND 8.0 7/26/22 3:34 BRFND4141.8 3.0
Styrene 0.16 0.20 7/26/22 3:34 BRFJ0.68 40.850.11 0.45
1,1,2,2-Tetrachloroethane ND 0.20 7/26/22 3:34 BRFND41.40.11 0.74
Page 36 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 7/20/2022
Work Order: 22G1156Sample Description/Location:
Field Sample #: SSV-13
Sample ID: 22G1156-17
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -27
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -7.7
Sampled: 7/18/2022 17:30
Canister ID: 2401
Flow Controller ID: 4329
Sub Description/Location:
Canister Size: 3 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 30 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Tetrachloroethylene 0.67 0.20 7/26/22 3:34 BRF4.6 41.40.15 1.0
Tetrahydrofuran 60 2.0 7/26/22 3:34 BRF180 45.90.33 0.97
Toluene 2.2 0.20 7/26/22 3:34 BRF8.5 40.750.11 0.43
1,2,4-Trichlorobenzene ND 0.20 7/26/22 3:34 BRFND41.50.19 1.4
1,1,1-Trichloroethane ND 0.20 7/26/22 3:34 BRFND41.10.16 0.86
1,1,2-Trichloroethane ND 0.20 7/26/22 3:34 BRFND41.10.14 0.77
Trichloroethylene ND 0.20 7/26/22 3:34 BRFND41.10.13 0.72
Trichlorofluoromethane (Freon 11)1.6 0.80 7/26/22 3:34 BRF8.7 44.50.24 1.3
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)ND 0.80 7/26/22 3:34 BRFND46.10.22 1.7
1,2,4-Trimethylbenzene 1.7 0.20 7/26/22 3:34 BRF8.2 40.980.088 0.43
1,3,5-Trimethylbenzene 0.26 0.20 7/26/22 3:34 BRF1.3 40.980.11 0.52
Vinyl Acetate ND 4.0 7/26/22 3:34 BRFND4141.1 3.8
Vinyl Chloride ND 0.20 7/26/22 3:34 BRFND40.510.18 0.46
m&p-Xylene 1.3 0.40 7/26/22 3:34 BRF5.5 41.70.22 0.97
o-Xylene 0.59 0.20 7/26/22 3:34 BRF2.6 40.870.10 0.44
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1)98.4 7/26/22 6:4670-130
4-Bromofluorobenzene (1)99.4 7/26/22 3:3470-130
Page 37 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
Sample Extraction Data
Prep Method: TO-15 Prep-EPA TO-15
Lab Number [Field ID]Batch Date
Pressure
Dilution
Pre
Dilution
Pre-Dil
Initial
mL
Pre-Dil
Final
mL
Default
Injection
mL
Actual
Injection
mL
22G1156-01 [SSV-16]B313927 1.5 1 N/A 1000 400 150 07/25/22
22G1156-02 [SSV-15]B313927 1.5 1 N/A 1000 400 150 07/25/22
22G1156-03 [SSV-03]B313927 1.5 1 N/A 1000 400 150 07/25/22
22G1156-04 [SSV-10]B313927 1.5 1 N/A 1000 400 150 07/25/22
22G1156-05 [SSV-02]B313927 1.5 1 N/A 1000 400 150 07/25/22
22G1156-06 [SSV-11]B313927 1.5 1 N/A 1000 400 150 07/25/22
22G1156-07 [SSV-09]B313927 1.5 1 N/A 1000 400 150 07/25/22
22G1156-08 [SSV-12]B313927 1.5 1 N/A 1000 400 150 07/25/22
22G1156-09 [DUP-01]B313927 1.5 1 N/A 1000 400 150 07/25/22
22G1156-10 [SSV-07]B313927 1.5 1 N/A 1000 400 150 07/25/22
22G1156-11 [SSV-08]B313927 1.5 1 N/A 1000 400 150 07/25/22
22G1156-12 [SSV-05]B313927 1.5 1 N/A 1000 400 150 07/25/22
22G1156-13 [SSV-01]B313927 1.5 1 N/A 1000 400 150 07/25/22
22G1156-14 [SSV-06]B313927 1.5 1 N/A 1000 400 150 07/25/22
22G1156-15 [SSV-04]B313927 1.5 1 N/A 1000 400 150 07/25/22
22G1156-16 [SSV-14]B313927 1.5 1 N/A 1000 400 150 07/25/22
22G1156-17 [SSV-13]B313927 1.5 1 N/A 1000 400 150 07/25/22
22G1156-17RE1 [SSV-13]B313927 1.5 1 N/A 1000 400 60 07/25/22
Page 38 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ug/m3 Spike Level
Result
Source
%REC
%REC
Limits RPD
RPD
Limit Flag/Qual Analyte
Air Toxics by EPA Compendium Methods - Quality Control
QUALITY CONTROL
RL
ppbv
Results RL Results ppbv
Batch B313927 - TO-15 Prep
Blank (B313927-BLK1)Prepared & Analyzed: 07/25/22
1.4NDAcetone
0.035NDBenzene
0.035NDBenzyl chloride
0.035NDBromodichloromethane
0.035NDBromoform
0.035NDBromomethane
0.035ND1,3-Butadiene
1.4ND2-Butanone (MEK)
0.35NDCarbon Disulfide
0.035NDCarbon Tetrachloride
0.035NDChlorobenzene
0.035NDChloroethane
0.035NDChloroform
0.070NDChloromethane
0.035NDCyclohexane
0.035NDDibromochloromethane
0.035ND1,2-Dibromoethane (EDB)
0.035ND1,2-Dichlorobenzene
0.035ND1,3-Dichlorobenzene
0.035ND1,4-Dichlorobenzene
0.035NDDichlorodifluoromethane (Freon 12)
0.035ND1,1-Dichloroethane
0.035ND1,2-Dichloroethane
0.035ND1,1-Dichloroethylene
0.035NDcis-1,2-Dichloroethylene
0.035NDtrans-1,2-Dichloroethylene
0.035ND1,2-Dichloropropane
0.035NDcis-1,3-Dichloropropene
0.035NDtrans-1,3-Dichloropropene
0.035ND1,2-Dichloro-1,1,2,2-tetrafluoroethane
(Freon 114)
0.35ND1,4-Dioxane
1.4NDEthanol
0.35NDEthyl Acetate
0.035NDEthylbenzene
0.035ND4-Ethyltoluene
0.035NDHeptane
0.035NDHexachlorobutadiene
1.4NDHexane
0.035ND2-Hexanone (MBK)
1.4NDIsopropanol
0.035NDMethyl tert-Butyl Ether (MTBE)
0.35NDMethylene Chloride
0.035ND4-Methyl-2-pentanone (MIBK)
0.035NDNaphthalene
1.4NDPropene
0.035NDStyrene
Page 39 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ug/m3 Spike Level
Result
Source
%REC
%REC
Limits RPD
RPD
Limit Flag/Qual Analyte
Air Toxics by EPA Compendium Methods - Quality Control
QUALITY CONTROL
RL
ppbv
Results RL Results ppbv
Batch B313927 - TO-15 Prep
Blank (B313927-BLK1)Prepared & Analyzed: 07/25/22
0.035ND1,1,2,2-Tetrachloroethane
0.035NDTetrachloroethylene
0.35NDTetrahydrofuran
0.035NDToluene
0.035ND1,2,4-Trichlorobenzene
0.035ND1,1,1-Trichloroethane
0.035ND1,1,2-Trichloroethane
0.035NDTrichloroethylene
0.14NDTrichlorofluoromethane (Freon 11)
0.14ND1,1,2-Trichloro-1,2,2-trifluoroethane (Freon
113)
0.035ND1,2,4-Trimethylbenzene
0.035ND1,3,5-Trimethylbenzene
0.70NDVinyl Acetate
0.035NDVinyl Chloride
0.070NDm&p-Xylene
0.035NDo-Xylene
8.00 70-130Surrogate: 4-Bromofluorobenzene (1)97.97.83
LCS (B313927-BS1)Prepared & Analyzed: 07/25/22
5.00 70-1301065.28Acetone
5.00 70-13093.44.67Benzene
5.00 70-1301095.46Benzyl chloride
5.00 70-13093.14.66Bromodichloromethane
5.00 70-1301035.15Bromoform
5.00 70-1301085.41Bromomethane
5.00 70-1301025.121,3-Butadiene
5.00 70-13095.44.772-Butanone (MEK)
5.00 70-1301045.19Carbon Disulfide
5.00 70-13097.84.89Carbon Tetrachloride
5.00 70-13095.84.79Chlorobenzene
5.00 70-1301015.06Chloroethane
5.00 70-13096.54.82Chloroform
5.00 70-1301045.22Chloromethane
5.00 70-13089.24.46Cyclohexane
5.00 70-13098.74.94Dibromochloromethane
5.00 70-13096.24.811,2-Dibromoethane (EDB)
5.00 70-1301025.081,2-Dichlorobenzene
5.00 70-13099.74.991,3-Dichlorobenzene
5.00 70-13098.94.951,4-Dichlorobenzene
5.00 70-1301115.55Dichlorodifluoromethane (Freon 12)
5.00 70-13097.34.861,1-Dichloroethane
5.00 70-13095.84.791,2-Dichloroethane
5.00 70-1301095.451,1-Dichloroethylene
5.00 70-13095.04.75cis-1,2-Dichloroethylene
5.00 70-13097.04.85trans-1,2-Dichloroethylene
5.00 70-13093.94.701,2-Dichloropropane
Page 40 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ug/m3 Spike Level
Result
Source
%REC
%REC
Limits RPD
RPD
Limit Flag/Qual Analyte
Air Toxics by EPA Compendium Methods - Quality Control
QUALITY CONTROL
RL
ppbv
Results RL Results ppbv
Batch B313927 - TO-15 Prep
LCS (B313927-BS1)Prepared & Analyzed: 07/25/22
5.00 70-13092.64.63cis-1,3-Dichloropropene
5.00 70-13094.74.73trans-1,3-Dichloropropene
5.00 70-1301055.271,2-Dichloro-1,1,2,2-tetrafluoroethane
(Freon 114)
5.00 70-13096.14.801,4-Dioxane
5.00 70-1301296.45Ethanol
5.00 70-13099.04.95Ethyl Acetate
5.00 70-13095.04.75Ethylbenzene
5.00 70-1301025.094-Ethyltoluene
5.00 70-13092.64.63Heptane
5.00 70-13090.14.51Hexachlorobutadiene
5.00 70-1301055.25Hexane
5.00 70-13096.14.812-Hexanone (MBK)
5.00 70-13094.74.73Isopropanol
5.00 70-13098.24.91Methyl tert-Butyl Ether (MTBE)
5.00 70-1301015.06Methylene Chloride
5.00 70-13098.64.934-Methyl-2-pentanone (MIBK)
5.00 70-1301055.26Naphthalene
5.00 70-13088.14.40Propene
5.00 70-13099.74.99Styrene
5.00 70-13096.74.841,1,2,2-Tetrachloroethane
5.00 70-13095.44.77Tetrachloroethylene
5.00 70-13095.34.77Tetrahydrofuran
5.00 70-13094.64.73Toluene
5.00 70-13094.14.701,2,4-Trichlorobenzene
5.00 70-13092.94.651,1,1-Trichloroethane
5.00 70-13096.24.811,1,2-Trichloroethane
5.00 70-13094.04.70Trichloroethylene
5.00 70-1301216.04Trichlorofluoromethane (Freon 11)
5.00 70-1301055.241,1,2-Trichloro-1,2,2-trifluoroethane (Freon
113)
5.00 70-1301025.091,2,4-Trimethylbenzene
5.00 70-1301045.191,3,5-Trimethylbenzene
5.00 70-13087.54.38Vinyl Acetate
5.00 70-1301035.14Vinyl Chloride
10.0 70-13098.59.85m&p-Xylene
5.00 70-13099.44.97o-Xylene
8.00 70-130Surrogate: 4-Bromofluorobenzene (1)1018.08
Page 41 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ug/m3 Spike Level
Result
Source
%REC
%REC
Limits RPD
RPD
Limit Flag/Qual Analyte
Air Toxics by EPA Compendium Methods - Quality Control
QUALITY CONTROL
RL
ppbv
Results RL Results ppbv
Batch B313927 - TO-15 Prep
Duplicate (B313927-DUP1)Prepared & Analyzed: 07/25/22 Source: 22G1156-02
8.0 7.9 25 J3.157.6Acetone 1918
0.20 ND 25NDBenzene0.64ND
0.20 ND 25NDBenzyl chloride 1.0ND
0.20 ND 25NDBromodichloromethane1.3ND
0.20 ND 25NDBromoform2.1ND
0.20 ND 25NDBromomethane0.78ND
0.20 ND 25ND1,3-Butadiene 0.44ND
8.0 ND 25ND2-Butanone (MEK)24ND
2.0 0.79 25 J1.530.78Carbon Disulfide 6.22.4
0.20 ND 25NDCarbon Tetrachloride 1.3ND
0.20 ND 25NDChlorobenzene0.92ND
0.20 ND 25NDChloroethane0.53ND
0.20 0.27 251.500.26Chloroform 0.981.3
0.40 ND 25NDChloromethane0.83ND
0.20 ND 25NDCyclohexane0.69ND
0.20 ND 25NDDibromochloromethane1.7ND
0.20 ND 25ND1,2-Dibromoethane (EDB)1.5ND
0.20 ND 25ND1,2-Dichlorobenzene 1.2ND
0.20 0.11 25 J3.510.121,3-Dichlorobenzene 1.20.70
0.20 ND 25ND1,4-Dichlorobenzene 1.2ND
0.20 0.37 258.990.34Dichlorodifluoromethane (Freon 12)0.991.7
0.20 ND 25ND1,1-Dichloroethane 0.81ND
0.20 ND 25ND1,2-Dichloroethane 0.81ND
0.20 ND 25ND1,1-Dichloroethylene 0.79ND
0.20 ND 25NDcis-1,2-Dichloroethylene 0.79ND
0.20 ND 25NDtrans-1,2-Dichloroethylene 0.79ND
0.20 ND 25ND1,2-Dichloropropane 0.92ND
0.20 ND 25NDcis-1,3-Dichloropropene 0.91ND
0.20 ND 25NDtrans-1,3-Dichloropropene 0.91ND
0.20 ND 25ND1,2-Dichloro-1,1,2,2-tetrafluoroethane
(Freon 114)
1.4ND
2.0 ND 25ND1,4-Dioxane 7.2ND
8.0 48 253.6146Ethanol1587
2.0 ND 25NDEthyl Acetate 7.2ND
0.20 ND 25NDEthylbenzene0.87ND
0.20 ND 25ND4-Ethyltoluene 0.98ND
0.20 ND 25NDHeptane0.82ND
0.20 ND 25NDHexachlorobutadiene2.1ND
8.0 ND 25NDHexane28ND
0.20 ND 25ND2-Hexanone (MBK)0.82ND
8.0 ND 25NDIsopropanol20ND
0.20 ND 25NDMethyl tert-Butyl Ether (MTBE)0.72ND
2.0 ND 25NDMethylene Chloride 6.9ND
0.20 ND 25ND4-Methyl-2-pentanone (MIBK)0.82ND
0.20 ND 25NDNaphthalene1.0ND
8.0 ND 25NDPropene14ND
0.20 ND 25NDStyrene0.85ND
Page 42 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ug/m3 Spike Level
Result
Source
%REC
%REC
Limits RPD
RPD
Limit Flag/Qual Analyte
Air Toxics by EPA Compendium Methods - Quality Control
QUALITY CONTROL
RL
ppbv
Results RL Results ppbv
Batch B313927 - TO-15 Prep
Duplicate (B313927-DUP1)Prepared & Analyzed: 07/25/22 Source: 22G1156-02
0.20 ND 25ND1,1,2,2-Tetrachloroethane 1.4ND
0.20 2.6 252.522.5Tetrachloroethylene 1.417
2.0 1.8 25 J9.501.6Tetrahydrofuran 5.94.8
0.20 0.62 251.300.61Toluene 0.752.3
0.20 ND 25ND1,2,4-Trichlorobenzene 1.5ND
0.20 ND 25ND1,1,1-Trichloroethane 1.1ND
0.20 ND 25ND1,1,2-Trichloroethane 1.1ND
0.20 ND 25NDTrichloroethylene1.1ND
0.80 0.34 25 J2.380.33Trichlorofluoromethane (Freon 11)4.51.9
0.80 ND 25ND1,1,2-Trichloro-1,2,2-trifluoroethane (Freon
113)
6.1ND
0.20 0.60 251.340.591,2,4-Trimethylbenzene 0.982.9
0.20 ND 25ND1,3,5-Trimethylbenzene 0.98ND
4.0 ND 25NDVinyl Acetate 14ND
0.20 ND 25NDVinyl Chloride 0.51ND
0.40 0.32 25 J3.820.31m&p-Xylene 1.71.3
0.20 0.16 25 J7.790.15o-Xylene 0.870.64
8.00 70-130Surrogate: 4-Bromofluorobenzene (1)97.17.76
Page 43 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
Note: Blank Subtraction is not performed unless otherwise noted
*QC result is outside of established limits.
Wide recovery limits established for difficult compound.
Wide RPD limits established for difficult compound.
#Data exceeded client recommended or regulatory level
RL Reporting Limit
MDL Method Detection Limit
RPD Relative Percent Difference
LCS Laboratory Control Sample
Laboratory Control SampleLCS Dup Duplicate Laboratory Control Sample
MS Matrix Spike Sample
MS Dup Duplicate Matrix Spike Sample
REC Recovery
QC Quality Control
ppbv Parts per billion volume
EPA United States Environmental Protection Agency
Percent Recovery% REC
ND Not Detected
Percent recoveries and relative percent differences (RPDs) are determined by the software using values in the
calculation which have not been rounded.
Not ApplicableN/A
DL Detection Limit
Not CalculatedNC
LFB/LCS Lab Fortified Blank/Lab Control Sample
ORP Oxidation-Reduction Potential
Not dry weight correctedwet
Percent weight% wt
KilogramKg
Gramg
Milligrammg
Microgramg
Nanogramng
LiterL
MillilitermL
Microliter L
Cubic Meterm3
Extractable Petroleum HydrocarbonsEPH
Volatile Petroleum HydrocarbonsVPH
Air Petroleum HydrocarbonsAPH
Flame Ionization DetectorFID
Photo Ionization DetectorPID
FLAG/QUALIFIER SUMMARY
Detected but below the Reporting Limit (lowest calibration standard); therefore, result is an estimated
concentration (CLP J-Flag).
J
ANALYST
Rebecca FaustRLF
Raisa A. PetraitisRAP
PDF Management StationSTATION
Kerry K. McGeeKKM
Brittany R. FiskBRF
Page 44 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
INTERNAL STANDARD AREA AND RT SUMMARY
EPA TO-15
RTResponseInternal Standard Area %RT DiffResponse
Reference
RT
Reference Area %
Limits
RT Diff
Limit Q
Initial Cal Check (S074415-ICV1 )Lab File ID: G22A202022.D Analyzed: 07/22/22 00:21
Bromochloromethane (1)1579701 8.307 1579701 8.307 60 - 140100 0.0000 +/-0.50
1,4-Difluorobenzene (1)3280480 10.081 3280480 10.081 60 - 140100 0.0000 +/-0.50
Chlorobenzene-d5 (1)2964537 14.452 2964537 14.452 60 - 140100 0.0000 +/-0.50
INTERNAL STANDARD AREA AND RT SUMMARY
EPA TO-15
RTResponseInternal Standard Area %RT DiffResponse
Reference
RT
Reference Area %
Limits
RT Diff
Limit Q
Calibration Check (S074446-CCV1 )Lab File ID: G22A206004.D Analyzed: 07/25/22 10:35
Bromochloromethane (1)1671762 8.313 1671762 8.313 60 - 140100 0.0000 +/-0.50
1,4-Difluorobenzene (1)3441701 10.087 3441701 10.087 60 - 140100 0.0000 +/-0.50
Chlorobenzene-d5 (1)3164952 14.452 3164952 14.452 60 - 140100 0.0000 +/-0.50
LCS (B313927-BS1 )Lab File ID: G22A206005.D Analyzed: 07/25/22 11:15
Bromochloromethane (1)1625523 8.307 1671762 8.313 60 - 14097 -0.0060 +/-0.50
1,4-Difluorobenzene (1)3365292 10.081 3441701 10.087 60 - 14098 -0.0060 +/-0.50
Chlorobenzene-d5 (1)3065958 14.452 3164952 14.452 60 - 14097 0.0000 +/-0.50
Blank (B313927-BLK1 )Lab File ID: G22A206008.D Analyzed: 07/25/22 13:24
Bromochloromethane (1)1572810 8.313 1671762 8.313 60 - 14094 0.0000 +/-0.50
1,4-Difluorobenzene (1)3271592 10.087 3441701 10.087 60 - 14095 0.0000 +/-0.50
Chlorobenzene-d5 (1)3022211 14.452 3164952 14.452 60 - 14095 0.0000 +/-0.50
SSV-16 (22G1156-01 )Lab File ID: G22A206009.D Analyzed: 07/25/22 14:04
Bromochloromethane (1)1521553 8.313 1671762 8.313 60 - 14091 0.0000 +/-0.50
1,4-Difluorobenzene (1)3154300 10.087 3441701 10.087 60 - 14092 0.0000 +/-0.50
Chlorobenzene-d5 (1)2875089 14.452 3164952 14.452 60 - 14091 0.0000 +/-0.50
SSV-15 (22G1156-02 )Lab File ID: G22A206010.D Analyzed: 07/25/22 14:45
Bromochloromethane (1)1540468 8.313 1671762 8.313 60 - 14092 0.0000 +/-0.50
1,4-Difluorobenzene (1)3186327 10.087 3441701 10.087 60 - 14093 0.0000 +/-0.50
Chlorobenzene-d5 (1)2914385 14.452 3164952 14.452 60 - 14092 0.0000 +/-0.50
Duplicate (B313927-DUP1 )Lab File ID: G22A206011.D Analyzed: 07/25/22 15:26
Bromochloromethane (1)1563344 8.313 1671762 8.313 60 - 14094 0.0000 +/-0.50
1,4-Difluorobenzene (1)3230060 10.081 3441701 10.087 60 - 14094 -0.0060 +/-0.50
Chlorobenzene-d5 (1)2962807 14.452 3164952 14.452 60 - 14094 0.0000 +/-0.50
SSV-03 (22G1156-03 )Lab File ID: G22A206012.D Analyzed: 07/25/22 16:07
Bromochloromethane (1)1563807 8.313 1671762 8.313 60 - 14094 0.0000 +/-0.50
1,4-Difluorobenzene (1)3174768 10.087 3441701 10.087 60 - 14092 0.0000 +/-0.50
Chlorobenzene-d5 (1)2937763 14.452 3164952 14.452 60 - 14093 0.0000 +/-0.50
Page 45 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
INTERNAL STANDARD AREA AND RT SUMMARY
EPA TO-15
RTResponseInternal Standard Area %RT DiffResponse
Reference
RT
Reference Area %
Limits
RT Diff
Limit Q
SSV-10 (22G1156-04 )Lab File ID: G22A206013.D Analyzed: 07/25/22 16:48
Bromochloromethane (1)1546027 8.313 1671762 8.313 60 - 14092 0.0000 +/-0.50
1,4-Difluorobenzene (1)3178863 10.087 3441701 10.087 60 - 14092 0.0000 +/-0.50
Chlorobenzene-d5 (1)2953851 14.452 3164952 14.452 60 - 14093 0.0000 +/-0.50
SSV-02 (22G1156-05 )Lab File ID: G22A206014.D Analyzed: 07/25/22 17:28
Bromochloromethane (1)1531545 8.313 1671762 8.313 60 - 14092 0.0000 +/-0.50
1,4-Difluorobenzene (1)3151252 10.087 3441701 10.087 60 - 14092 0.0000 +/-0.50
Chlorobenzene-d5 (1)2873989 14.452 3164952 14.452 60 - 14091 0.0000 +/-0.50
SSV-11 (22G1156-06 )Lab File ID: G22A206015.D Analyzed: 07/25/22 18:08
Bromochloromethane (1)1555209 8.313 1671762 8.313 60 - 14093 0.0000 +/-0.50
1,4-Difluorobenzene (1)3225289 10.087 3441701 10.087 60 - 14094 0.0000 +/-0.50
Chlorobenzene-d5 (1)2935155 14.452 3164952 14.452 60 - 14093 0.0000 +/-0.50
SSV-09 (22G1156-07 )Lab File ID: G22A206016.D Analyzed: 07/25/22 18:48
Bromochloromethane (1)1516557 8.313 1671762 8.313 60 - 14091 0.0000 +/-0.50
1,4-Difluorobenzene (1)3198092 10.087 3441701 10.087 60 - 14093 0.0000 +/-0.50
Chlorobenzene-d5 (1)2887713 14.452 3164952 14.452 60 - 14091 0.0000 +/-0.50
SSV-12 (22G1156-08 )Lab File ID: G22A206017.D Analyzed: 07/25/22 19:28
Bromochloromethane (1)1535243 8.313 1671762 8.313 60 - 14092 0.0000 +/-0.50
1,4-Difluorobenzene (1)3229459 10.087 3441701 10.087 60 - 14094 0.0000 +/-0.50
Chlorobenzene-d5 (1)2950094 14.452 3164952 14.452 60 - 14093 0.0000 +/-0.50
DUP-01 (22G1156-09 )Lab File ID: G22A206018.D Analyzed: 07/25/22 20:09
Bromochloromethane (1)1484815 8.313 1671762 8.313 60 - 14089 0.0000 +/-0.50
1,4-Difluorobenzene (1)3049078 10.087 3441701 10.087 60 - 14089 0.0000 +/-0.50
Chlorobenzene-d5 (1)2794509 14.452 3164952 14.452 60 - 14088 0.0000 +/-0.50
SSV-07 (22G1156-10 )Lab File ID: G22A206019.D Analyzed: 07/25/22 20:49
Bromochloromethane (1)1491360 8.307 1671762 8.313 60 - 14089 -0.0060 +/-0.50
1,4-Difluorobenzene (1)3094783 10.081 3441701 10.087 60 - 14090 -0.0060 +/-0.50
Chlorobenzene-d5 (1)2835824 14.452 3164952 14.452 60 - 14090 0.0000 +/-0.50
SSV-08 (22G1156-11 )Lab File ID: G22A206022.D Analyzed: 07/25/22 22:47
Bromochloromethane (1)1427302 8.313 1671762 8.313 60 - 14085 0.0000 +/-0.50
1,4-Difluorobenzene (1)2975542 10.087 3441701 10.087 60 - 14086 0.0000 +/-0.50
Chlorobenzene-d5 (1)2754952 14.452 3164952 14.452 60 - 14087 0.0000 +/-0.50
SSV-05 (22G1156-12 )Lab File ID: G22A206023.D Analyzed: 07/25/22 23:27
Bromochloromethane (1)1446365 8.313 1671762 8.313 60 - 14087 0.0000 +/-0.50
1,4-Difluorobenzene (1)3083778 10.081 3441701 10.087 60 - 14090 -0.0060 +/-0.50
Chlorobenzene-d5 (1)2806330 14.452 3164952 14.452 60 - 14089 0.0000 +/-0.50
Page 46 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
INTERNAL STANDARD AREA AND RT SUMMARY
EPA TO-15
RTResponseInternal Standard Area %RT DiffResponse
Reference
RT
Reference Area %
Limits
RT Diff
Limit Q
SSV-01 (22G1156-13 )Lab File ID: G22A206025.D Analyzed: 07/26/22 00:47
Bromochloromethane (1)1426549 8.313 1671762 8.313 60 - 14085 0.0000 +/-0.50
1,4-Difluorobenzene (1)3000753 10.081 3441701 10.087 60 - 14087 -0.0060 +/-0.50
Chlorobenzene-d5 (1)2749302 14.452 3164952 14.452 60 - 14087 0.0000 +/-0.50
SSV-06 (22G1156-14 )Lab File ID: G22A206026.D Analyzed: 07/26/22 01:28
Bromochloromethane (1)1437717 8.313 1671762 8.313 60 - 14086 0.0000 +/-0.50
1,4-Difluorobenzene (1)2962871 10.081 3441701 10.087 60 - 14086 -0.0060 +/-0.50
Chlorobenzene-d5 (1)2765730 14.452 3164952 14.452 60 - 14087 0.0000 +/-0.50
SSV-04 (22G1156-15 )Lab File ID: G22A206027.D Analyzed: 07/26/22 02:10
Bromochloromethane (1)1456037 8.313 1671762 8.313 60 - 14087 0.0000 +/-0.50
1,4-Difluorobenzene (1)3072977 10.081 3441701 10.087 60 - 14089 -0.0060 +/-0.50
Chlorobenzene-d5 (1)2835226 14.452 3164952 14.452 60 - 14090 0.0000 +/-0.50
SSV-14 (22G1156-16 )Lab File ID: G22A206028.D Analyzed: 07/26/22 02:52
Bromochloromethane (1)1466485 8.307 1671762 8.313 60 - 14088 -0.0060 +/-0.50
1,4-Difluorobenzene (1)3042538 10.081 3441701 10.087 60 - 14088 -0.0060 +/-0.50
Chlorobenzene-d5 (1)2840738 14.452 3164952 14.452 60 - 14090 0.0000 +/-0.50
SSV-13 (22G1156-17 )Lab File ID: G22A206029.D Analyzed: 07/26/22 03:34
Bromochloromethane (1)1506661 8.307 1671762 8.313 60 - 14090 -0.0060 +/-0.50
1,4-Difluorobenzene (1)3119221 10.081 3441701 10.087 60 - 14091 -0.0060 +/-0.50
Chlorobenzene-d5 (1)2893829 14.452 3164952 14.452 60 - 14091 0.0000 +/-0.50
SSV-13 (22G1156-17RE1 )Lab File ID: G22A206030.D Analyzed: 07/26/22 06:46
Bromochloromethane (1)1559013 8.307 1671762 8.313 60 - 14093 -0.0060 +/-0.50
1,4-Difluorobenzene (1)3157254 10.081 3441701 10.087 60 - 14092 -0.0060 +/-0.50
Chlorobenzene-d5 (1)2937306 14.446 3164952 14.452 60 - 14093 -0.0060 +/-0.50
Page 47 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
CONTINUING CALIBRATION CHECK
EPA TO-15
S074446-CCV1
COMPOUND TYPE CCV MIN (#)CCV LIMIT (#)CCV ICAL
CONC. (ppbv)% DIFF / DRIFTRESPONSE FACTOR
STD
0.7328297A 3.1 305.16 0.71069835.00Acetone
0.86765A -8.3 304.59 0.94595865.00Benzene
1.167189A 5.0 305.25 1.111755.00Benzyl chloride
0.6820985A -6.8 304.66 0.73147575.00Bromodichloromethane
0.5948425A 2.1 305.11 0.58248435.00Bromoform
0.2635906A 9.5 305.47 0.2407965.00Bromomethane
0.2973112A 6.9 305.34 0.27814615.001,3-Butadiene
1.470897A -8.9 304.56 1.6138755.002-Butanone (MEK)
1.517864A -0.3 304.98 1.5228535.00Carbon Disulfide
0.5766088A -1.5 304.93 0.58522565.00Carbon Tetrachloride
0.8495249A -2.3 304.88 0.86959665.00Chlorobenzene
0.1613225A -1.5 304.92 0.16380145.00Chloroethane
1.291089A -4.9 304.76 1.3576465.00Chloroform
0.4262846A 7.6 305.38 0.3962695.00Chloromethane
0.3432335A -13.1 304.34 0.3949345.00Cyclohexane
0.6448275A -2.1 304.89 0.6589315.00Dibromochloromethane
0.595758A -3.8 304.81 0.61911725.001,2-Dibromoethane (EDB)
0.7148681A -1.6 304.92 0.72626095.001,2-Dichlorobenzene
0.7694241A -0.8 304.96 0.7754265.001,3-Dichlorobenzene
0.7600798A -2.7 304.86 0.78109255.001,4-Dichlorobenzene
1.362487A 9.1 305.46 1.2484475.00Dichlorodifluoromethane (Freon 12)
1.126011A -5.6 304.72 1.1927355.001,1-Dichloroethane
0.8868602A -7.5 304.63 0.9586125.001,2-Dichloroethane
0.9511191A 24.6 306.23 0.76351275.001,1-Dichloroethylene
0.8403435A -7.0 304.65 0.90355125.00cis-1,2-Dichloroethylene
0.8647614A -5.3 304.74 0.91301845.00trans-1,2-Dichloroethylene
0.3525926A -7.4 304.63 0.38083025.001,2-Dichloropropane
0.5216151A -5.4 304.73 0.55160685.00cis-1,3-Dichloropropene
0.4757782A -6.3 304.69 0.50758365.00trans-1,3-Dichloropropene
0.9567132A 14.3 305.71 0.83714865.001,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)
0.1708904A -9.3 304.53 0.18848795.001,4-Dioxane
0.1345818A 5.9 305.30 0.12704865.00Ethanol
0.1904061A -5.8 304.71 0.20212355.00Ethyl Acetate
1.464624A -5.3 304.74 1.5463665.00Ethylbenzene
1.534888A 0.2 305.01 1.531935.004-Ethyltoluene
0.2984348A -7.3 304.64 0.32184365.00Heptane
0.4743357A -14.9 304.25 0.55746395.00Hexachlorobutadiene
0.8960835A 1.9 305.10 0.93830825.00Hexane
Page 48 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
CONTINUING CALIBRATION CHECK
EPA TO-15
S074446-CCV1
COMPOUND TYPE CCV MIN (#)CCV LIMIT (#)CCV ICAL
CONC. (ppbv)% DIFF / DRIFTRESPONSE FACTOR
STD
0.9305099A -7.0 304.65 1.0001615.002-Hexanone (MBK)
0.8169086A 6.8 305.34 0.76479615.00Isopropanol
1.560451A -2.5 304.87 1.6009835.00Methyl tert-Butyl Ether (MTBE)
0.7723999A 2.8 305.14 0.75166545.00Methylene Chloride
0.9258185A -1.1 304.95 0.93598045.004-Methyl-2-pentanone (MIBK)
1.166075A -4.9 304.76 1.2261115.00Naphthalene
0.6329686A -10.9 304.46 0.71028225.00Propene
0.8502964A 0.5 305.03 0.84596255.00Styrene
0.9334875A -3.2 304.84 0.96417935.001,1,2,2-Tetrachloroethane
0.4493702A -3.7 304.81 0.46672425.00Tetrachloroethylene
0.2572663A -6.0 304.70 0.27356665.00Tetrahydrofuran
1.12813A -6.5 304.68 1.2064975.00Toluene
0.5246831A -11.2 304.44 0.59056515.001,2,4-Trichlorobenzene
0.5969853A -4.0 304.80 0.62192365.001,1,1-Trichloroethane
0.3869698A -6.1 304.69 0.41231175.001,1,2-Trichloroethane
0.3760396A -6.1 304.70 0.40031745.00Trichloroethylene
0.7839537A 21.2 306.06 0.64684365.00Trichlorofluoromethane (Freon 11)
1.086141A 5.6 305.28 1.0281845.001,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
1.272485A 1.2 305.06 1.2575115.001,2,4-Trimethylbenzene
1.288317A 2.6 305.13 1.2556945.001,3,5-Trimethylbenzene
1.899374A -8.3 304.59 2.0704955.00Vinyl Acetate
0.379677A 2.7 305.14 0.36970465.00Vinyl Chloride
1.162407A -1.2 309.88 1.17660910.0m&p-Xylene
1.188718A -1.3 304.94 1.2038575.00o-Xylene
* Values outside of QC limits
# Column to be used to flag Response Factor and %Diff/Drift values with an asterisk
Page 49 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
CertificationsAnalyte
CERTIFICATIONS
Certified Analyses included in this Report
EPA TO-15 in Air
AIHA,NY,ME,NHAcetone
AIHA,FL,NJ,NY,ME,NH,VABenzene
AIHA,FL,NJ,NY,ME,NH,VABenzyl chloride
AIHA,NJ,NY,ME,NH,VABromodichloromethane
AIHA,NJ,NY,ME,NH,VABromoform
AIHA,FL,NJ,NY,ME,NHBromomethane
AIHA,NJ,NY,ME,NH,VA1,3-Butadiene
AIHA,FL,NJ,NY,ME,NH,VA2-Butanone (MEK)
AIHA,NJ,NY,ME,NH,VACarbon Disulfide
AIHA,FL,NJ,NY,ME,NH,VACarbon Tetrachloride
AIHA,FL,NJ,NY,ME,NH,VAChlorobenzene
AIHA,FL,NJ,NY,ME,NH,VAChloroethane
AIHA,FL,NJ,NY,ME,NH,VAChloroform
AIHA,FL,NJ,NY,ME,NH,VAChloromethane
AIHA,NJ,NY,ME,NH,VACyclohexane
AIHA,NY,ME,NHDibromochloromethane
AIHA,NJ,NY,ME,NH1,2-Dibromoethane (EDB)
AIHA,FL,NJ,NY,ME,NH,VA1,2-Dichlorobenzene
AIHA,NJ,NY,ME,NH1,3-Dichlorobenzene
AIHA,FL,NJ,NY,ME,NH,VA1,4-Dichlorobenzene
AIHA,NY,ME,NHDichlorodifluoromethane (Freon 12)
AIHA,FL,NJ,NY,ME,NH,VA1,1-Dichloroethane
AIHA,FL,NJ,NY,ME,NH,VA1,2-Dichloroethane
AIHA,FL,NJ,NY,ME,NH,VA1,1-Dichloroethylene
AIHA,FL,NY,ME,NH,VAcis-1,2-Dichloroethylene
AIHA,NJ,NY,ME,NH,VAtrans-1,2-Dichloroethylene
AIHA,FL,NJ,NY,ME,NH,VA1,2-Dichloropropane
AIHA,FL,NJ,NY,ME,NH,VAcis-1,3-Dichloropropene
AIHA,NY,ME,NHtrans-1,3-Dichloropropene
AIHA,NJ,NY,ME,NH,VA1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)
AIHA,NJ,NY,ME,NH,VA1,4-Dioxane
AIHAEthanol
AIHAEthyl Acetate
AIHA,FL,NJ,NY,ME,NH,VAEthylbenzene
AIHA,NJ4-Ethyltoluene
AIHA,NJ,NY,ME,NH,VAHeptane
AIHA,NJ,NY,ME,NH,VAHexachlorobutadiene
AIHA,FL,NJ,NY,ME,NH,VAHexane
AIHA2-Hexanone (MBK)
AIHA,NY,ME,NHIsopropanol
AIHA,FL,NJ,NY,ME,NH,VAMethyl tert-Butyl Ether (MTBE)
AIHA,FL,NJ,NY,ME,NH,VAMethylene Chloride
AIHA,FL,NJ,NY,ME,NH4-Methyl-2-pentanone (MIBK)
NY,ME,NHNaphthalene
AIHAPropene
AIHA,FL,NJ,NY,ME,NH,VAStyrene
AIHA,FL,NJ,NY,ME,NH,VA1,1,2,2-Tetrachloroethane
Page 50 of 55
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
CertificationsAnalyte
CERTIFICATIONS
Certified Analyses included in this Report
EPA TO-15 in Air
AIHA,FL,NJ,NY,ME,NH,VATetrachloroethylene
AIHATetrahydrofuran
AIHA,FL,NJ,NY,ME,NH,VAToluene
AIHA,NJ,NY,ME,NH,VA1,2,4-Trichlorobenzene
AIHA,FL,NJ,NY,ME,NH,VA1,1,1-Trichloroethane
AIHA,FL,NJ,NY,ME,NH,VA1,1,2-Trichloroethane
AIHA,FL,NJ,NY,ME,NH,VATrichloroethylene
AIHA,NY,ME,NHTrichlorofluoromethane (Freon 11)
AIHA,NJ,NY,ME,NH,VA1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
AIHA,NJ,NY,ME,NH1,2,4-Trimethylbenzene
AIHA,NJ,NY,ME,NH1,3,5-Trimethylbenzene
AIHA,FL,NJ,NY,ME,NH,VAVinyl Acetate
AIHA,FL,NJ,NY,ME,NH,VAVinyl Chloride
AIHA,FL,NJ,NY,ME,NH,VAm&p-Xylene
AIHA,FL,NJ,NY,ME,NH,VAo-Xylene
Con-Test, a Pace Environmental Laboratory, operates under the following certifications and accreditations:
Code Description Number Expires
100033AIHA-LAP, LLC - ISO 17025:2017AIHA 03/1/2024
M-MA100Massachusetts DEPMA 06/30/2023
PH-0165Connecticut Department of Public HealthCT 12/31/2022
10899 NELAPNew York State Department of HealthNY 04/1/2023
2516 NELAPNew Hampshire Environmental LabNH 02/5/2023
LAO00373Rhode Island Department of HealthRI 12/30/2022
652North Carolina Div. of Water QualityNC 12/31/2022
MA007 NELAPNew Jersey DEPNJ 06/30/2023
E871027 NELAPFlorida Department of HealthFL 06/30/2023
LL720741Vermont Department of Health Lead LaboratoryVT 07/30/2023
VT-255716Vermont Department of Health Drinking WaterVT-DW 06/12/2023
MA00100State of MaineME 06/9/2023
460217Commonwealth of VirginiaVA 12/14/2022
2557 NELAPNew Hampshire Environmental LabNH-P 09/6/2022
25703North Carolina Department of Health and Human ServicesNC-DW 07/31/2023
68-05812Commonwealth of Pennsylvania DEPPA 06/30/2023
9100Dept. of Env, Great Lakes, and EnergyMI 09/6/2022
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Appendix C DEQ Risk Calculators
Version Date:
Basis:
Site Name:
Site Address:
DEQ Section:
Site ID:
Exposure Unit ID:
Submittal Date:
Reviewed By:
Prepared By:Hart and Hickman
Hart and Hickman
Building 1 - Worst Case
North Carolina Department of Environmental Quality
Risk Calculator
Dick Keffer Pontiac Buick GMC
1001 Tyvola Road and 450 Minuet Lane
DWM Brownfields Section
23064-19-060
July 2022
May 2022 EPA RSL Table
North Carolina DEQ Risk Calculator
Table of Contents
Version Date: July 2022
Basis: May 2022 EPA RSL Table
Site ID: 23064-19-060
Exposure Unit ID: Building 1 - Worst Case
Form No.
Input Form 1A Complete Exposure Pathways
Input Form 1B Exposure Factors and Target Risks
Input Form 1C Contaminant Migration Parameters
Input Form 1D Sample Statistics
Input Form 2A Soil Exposure Point Concentration Table
Input Form 2B Groundwater Exposure Point Concentration Table
Input Form 2C Surface Water Exposure Point Concentration Table
Input Form 2D Soil Gas Exposure Point Concentration Table
Input Form 2E Indoor Air Exposure Point Concentration Table
Output Form 1A Risk for Individual Pathways
Output Form 1B Sitewide Risk
Output Form 2A Resident Soil
Output Form 2B Resident Groundwater Use
Output Form 2C Non-Residential Worker Soil
Output Form 2D Non-Residential Worker Groundwater Use
Output Form 2E Construction Worker Soil
Output Form 2F Recreator/Trespasser Soil
Output Form 2G Recreator/Trespasser Surface Water
Output Form 3A Resident Groundwater to Indoor Air
Output Form 3B Resident Soil Gas to Indoor Air
Output Form 3C Resident Indoor Air
Output Form 3D Non-Residential Worker Groundwater to Indoor Air
Output Form 3E Non-Residential Worker Soil Gas to Indoor Air
Output Form 3F Non-Residential Worker Indoor Air
Output Form 4A Soil to Groundwater - Forward Mode
Output Form 4B Groundwater to Groundwater - Forward Mode
Output Form 4C Soil to Surface Water - Forward Mode
Output Form 4D Groundwater to Surface Water - Forward Mode
Output Form 4E Soil to Groundwater - Backward Mode
Output Form 4F Groundwater to Groundwater - Backward Mode
Output Form 4G Soil to Surface Water - Backward Mode
Output Form 4H Groundwater to Surface Water - Backward Mode
Output Section 4 - Contaminant Migration Worksheets
Output Section 3 - Vapor Intrusion Calculators
TOC
Description
DATA INPUT SHEETS
Check box
if included
Input Section 1 - Exposure Pathways & Parameters
Input Section 2 - Exposure Point Concentrations
DATA OUTPUT SHEETS
Output Section 1 - Summary Output for All Calculators
Output Section 2 - Direct Contact Soil and Groundwater Calculators
North Carolina DEQ Risk Calculator
Complete Exposure Pathways
Version Date: July 2022
Basis: May 2022 EPA RSL Table
Site ID: 23064-19-060
Exposure Unit ID: Building 1 - Worst Case
Note: Risk output will only be calculated for complete exposure pathways.
Receptor Pathway
Check box if
pathway
complete
Soil
Groundwater Use
Soil
Groundwater Use
Construction Worker Soil
Soil
Surface Water
Groundwater to Indoor Air
Soil Gas to Indoor Air
Indoor Air
Groundwater to Indoor Air
Soil Gas to Indoor Air
Indoor Air
Source Soil
Source Groundwater
Source Soil
Source Groundwater
Input Form 1A
VAPOR INTRUSION PATHWAYS
DIRECT CONTACT SOIL AND WATER PATHWAYS
Resident
Non-Residential Worker
Recreator/Trespasser
Resident
Non-Residential Worker
CONTAMINANT MIGRATION PATHWAYS
Groundwater
Surface Water
North Carolina DEQ Risk Calculator
Exposure Point Concentrations
Version Date: July 2022
Basis: May 2022 EPA RSL Table
Site ID: 23064-19-060
Exposure Unit ID: Building 1 - Worst Case
Description of Exposure Point Concentration Selection:
Exposure Point Concentration
(ug/m3)
Notes:CAS Number Chemical Minimum
Concentration (Qualifier)
Maximum
Concentration (Qualifier)
Units Location of
Maximum Concentration
Detection
Frequency
Range of
Detection Limits
Concentration
Used for Screening
Background
Value
Screening
Toxicity Value
(Screening Level) (n/c)
Potential
ARAR/TBC
Value
Potential
ARAR/TBC
Source
COPC Flag
(Y/N)
Rationale for
Selection or
Deletion
620 67-64-1 Acetone ug/m3
0.58 71-43-2 Benzene ug/m3
21 75-27-4 Bromodichloromethane ug/m3
4.2 75-15-0 Carbon Disulfide ug/m3
110 67-66-3 Chloroform ug/m3
1.1 74-87-3 Chloromethane ug/m3
2.7 124-48-1 Dibromochloromethane ug/m3
1.8 75-71-8 Dichlorodifluoromethane ug/m3
1.3 100-41-4 Ethylbenzene ug/m3
180 109-99-9 ~Tetrahydrofuran ug/m3
11 67-63-0 Isopropanol ug/m3
54 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m3
3.1 108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)ug/m3
0.68 100-42-5 Styrene ug/m3
18 127-18-4 Tetrachloroethylene ug/m3
8.5 108-88-3 Toluene ug/m3
8.7 75-69-4 Trichlorofluoromethane ug/m3
8.2 95-63-6 Trimethylbenzene, 1,2,4-ug/m3
1.3 108-67-8 Trimethylbenzene, 1,3,5-ug/m3
5.5 108-38-3 Xylene, m-ug/m3
2.6 95-47-6 Xylene, o-ug/m3
Input Form 2D
Soil Gas Exposure Point Concentration Table
Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations
North Carolina DEQ Risk Calculator
Risk for Individual Pathways Output Form 1A
Version Date: July 2022
Basis: May 2022 EPA RSL Table
Site ID: 23064-19-060
Exposure Unit ID: Building 1 - Worst Case
Receptor Pathway Carcinogenic
Risk Hazard Index Risk exceeded?
Soil NC NC NC
Groundwater Use*NC NC NC
Soil NC NC NC
Groundwater Use*NC NC NC
Construction Worker Soil NC NC NC
Soil NC NC NC
Surface Water*NC NC NC
Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded?
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air 3.5E-05 5.8E-02 NO
Indoor Air NC NC NC
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air NC NC NC
Indoor Air NC NC NC
Pathway Source
Source Soil NC
Source Groundwater NC
Source Soil NC
Source Groundwater NC
3. NM = Not Modeled
4. NC = Pathway not calculated
DIRECT CONTACT SOIL AND WATER CALCULATORS
Resident
Non-Residential Worker
Recreator/Trespasser
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk-based
closure.
Surface Water Exceedence of 2B at Receptor?
Exceedence of 2B at Receptor?
VAPOR INTRUSION CALCULATORS
Resident
Non-Residential Worker
CONTAMINANT MIGRATION CALCULATORS
Target Receptor Concentrations Exceeded?
Groundwater Exceedence of 2L at Receptor?
Exceedence of 2L at Receptor?
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
Notes:
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air
Version Date: July 2022
Basis: May 2022 EPA RSL Table
Site ID: 23064-19-060
Exposure Unit ID: Building 1 - Worst Case
CAS #Chemical Name:
Soil Gas Concentration
(ug/m3)
Calculated
Indoor Air
Concentration
(ug/m3)
Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06
Target Indoor Air Conc. for Non-Carcinogens @ THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
67-64-1 Acetone 620 18.6 --
71-43-2 Benzene 0.58 0.0174 3.6E-01 6.3E+00 4.8E-08 5.6E-04
75-27-4 Bromodichloromethane 21 0.63 7.6E-02 -8.3E-06
75-15-0 Carbon Disulfide 4.2 0.126 -1.5E+02 1.7E-04
67-66-3 Chloroform 110 3.3 1.2E-01 2.0E+01 2.7E-05 3.2E-02
74-87-3 Chloromethane 1.1 0.033 -1.9E+01 3.5E-04
124-48-1 Dibromochloromethane 2.7 0.081 --
75-71-8 Dichlorodifluoromethane 1.8 0.054 -2.1E+01 5.2E-04
100-41-4 Ethylbenzene 1.3 0.039 1.1E+00 2.1E+02 3.5E-08 3.7E-05
109-99-9 ~Tetrahydrofuran 180 5.4 -4.2E+02 2.6E-03
67-63-0 Isopropanol 11 0.33 -4.2E+01 1.6E-03
78-93-3 Methyl Ethyl Ketone (2-Butanone)54 1.62 -1.0E+03 3.1E-04
108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)3.1 0.093 -6.3E+02 3.0E-05
100-42-5 Styrene 0.68 0.0204 -2.1E+02 2.0E-05
127-18-4 Tetrachloroethylene 18 0.54 1.1E+01 8.3E+00 5.0E-08 1.3E-02
108-88-3 Toluene 8.5 0.255 -1.0E+03 4.9E-05
75-69-4 Trichlorofluoromethane 8.7 0.261 --
95-63-6 Trimethylbenzene, 1,2,4-8.2 0.246 -1.3E+01 3.9E-03
108-67-8 Trimethylbenzene, 1,3,5-1.3 0.039 -1.3E+01 6.2E-04
108-38-3 Xylene, m-5.5 0.165 -2.1E+01 1.6E-03
95-47-6 Xylene, o-2.6 0.078 -2.1E+01 7.5E-04
Cumulative:3.5E-05 5.8E-02
All concentrations are in ug/m3
Output Form 3B
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
North Carolina DEQ Risk Calculator
Version Date:
Basis:
Site Name:
Site Address:
DEQ Section:
Site ID:
Exposure Unit ID:
Submittal Date:
Reviewed By:
Building 2 - Worst Case
North Carolina Department of Environmental Quality
Risk Calculator
Dick Keffer Pontiac Buick GMC
1001 Tyvola Road and 450 Minuet Lane
DWM Brownfields Section
23064-19-060
July 2022
May 2022 EPA RSL Table
Prepared By:Hart and Hickman
Hart and Hickman
North Carolina DEQ Risk Calculator
Table of Contents
Version Date: July 2022
Basis: May 2022 EPA RSL Table
Site ID: 23064-19-060
Exposure Unit ID: Building 2 - Worst Case
Form No.
Input Form 1A Complete Exposure Pathways
Input Form 1B Exposure Factors and Target Risks
Input Form 1C Contaminant Migration Parameters
Input Form 1D Sample Statistics
Input Form 2A Soil Exposure Point Concentration Table
Input Form 2B Groundwater Exposure Point Concentration Table
Input Form 2C Surface Water Exposure Point Concentration Table
Input Form 2D Soil Gas Exposure Point Concentration Table
Input Form 2E Indoor Air Exposure Point Concentration Table
Output Form 1A Risk for Individual Pathways
Output Form 1B Sitewide Risk
Output Form 2A Resident Soil
Output Form 2B Resident Groundwater Use
Output Form 2C Non-Residential Worker Soil
Output Form 2D Non-Residential Worker Groundwater Use
Output Form 2E Construction Worker Soil
Output Form 2F Recreator/Trespasser Soil
Output Form 2G Recreator/Trespasser Surface Water
Output Form 3A Resident Groundwater to Indoor Air
Output Form 3B Resident Soil Gas to Indoor Air
Output Form 3C Resident Indoor Air
Output Form 3D Non-Residential Worker Groundwater to Indoor Air
Output Form 3E Non-Residential Worker Soil Gas to Indoor Air
Output Form 3F Non-Residential Worker Indoor Air
Output Form 4A Soil to Groundwater - Forward Mode
Output Form 4B Groundwater to Groundwater - Forward Mode
Output Form 4C Soil to Surface Water - Forward Mode
Output Form 4D Groundwater to Surface Water - Forward Mode
Output Form 4E Soil to Groundwater - Backward Mode
Output Form 4F Groundwater to Groundwater - Backward Mode
Output Form 4G Soil to Surface Water - Backward Mode
Output Form 4H Groundwater to Surface Water - Backward Mode
Output Section 4 - Contaminant Migration Worksheets
Output Section 3 - Vapor Intrusion Calculators
TOC
Description
DATA INPUT SHEETS
Check box
if included
Input Section 1 - Exposure Pathways & Parameters
Input Section 2 - Exposure Point Concentrations
DATA OUTPUT SHEETS
Output Section 1 - Summary Output for All Calculators
Output Section 2 - Direct Contact Soil and Groundwater Calculators
North Carolina DEQ Risk Calculator
Complete Exposure Pathways
Version Date: July 2022
Basis: May 2022 EPA RSL Table
Site ID: 23064-19-060
Exposure Unit ID: Building 2 - Worst Case
Note: Risk output will only be calculated for complete exposure pathways.
Receptor Pathway
Check box if
pathway
complete
Soil
Groundwater Use
Soil
Groundwater Use
Construction Worker Soil
Soil
Surface Water
Groundwater to Indoor Air
Soil Gas to Indoor Air
Indoor Air
Groundwater to Indoor Air
Soil Gas to Indoor Air
Indoor Air
Source Soil
Source Groundwater
Source Soil
Source Groundwater
Resident
Non-Residential Worker
CONTAMINANT MIGRATION PATHWAYS
Groundwater
Surface Water
Input Form 1A
VAPOR INTRUSION PATHWAYS
DIRECT CONTACT SOIL AND WATER PATHWAYS
Resident
Non-Residential Worker
Recreator/Trespasser
North Carolina DEQ Risk Calculator
Exposure Point ConcentrationsVersion Date: July 2022
Basis: May 2022 EPA RSL Table
Site ID: 23064-19-060
Exposure Unit ID: Building 2 - Worst Case
Description of Exposure Point Concentration Selection:
Exposure Point
Concentration
(ug/m3)
Notes:CAS Number Chemical Minimum
Concentration
(Qualifier)
Maximum
Concentration
(Qualifier)
Units Location of
Maximum
Concentration
Detection
Frequency
Range of
Detection
Limits
Concentration
Used for
Screening
Background
Value
Screening Toxicity Value
(Screening Level) (n/c)
Potential
ARAR/TBC
Value
Potential
ARAR/TBC
Source
COPC Flag
(Y/N)
Rationale for
Selection or
Deletion
18 67-64-1 Acetone ug/m3
15 75-15-0 Carbon Disulfide ug/m3
6.5 67-66-3 Chloroform ug/m3
2 75-71-8 Dichlorodifluoromethane ug/m3
0.97 123-91-1 Dioxane, 1,4-ug/m3
0.82 100-41-4 Ethylbenzene ug/m3
2.5 109-99-9 ~Tetrahydrofuran ug/m3
1.3 1634-04-4 Methyl tert-Butyl Ether (MTBE)ug/m3
4.8 75-09-2 Methylene Chloride ug/m3
160 127-18-4 Tetrachloroethylene ug/m3
3 108-88-3 Toluene ug/m3
31 75-69-4 Trichlorofluoromethane ug/m3
4.8 95-63-6 Trimethylbenzene, 1,2,4-ug/m3
0.55 108-67-8 Trimethylbenzene, 1,3,5-ug/m3
3.3 108-38-3 Xylene, m-ug/m3
1.5 95-47-6 Xylene, o-ug/m3
Input Form 2D
Soil Gas Exposure Point Concentration Table
Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air
Version Date: July 2022
Basis: May 2022 EPA RSL Table
Site ID: 23064-19-060
Exposure Unit ID: Building 2 - Worst Case
CAS #Chemical Name:
Soil Gas
Concentration
(ug/m3)
Calculated Indoor Air
Concentration
(ug/m3)
Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06
Target Indoor Air Conc. for Non-Carcinogens @ THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
67-64-1 Acetone 18 0.54 --
75-15-0 Carbon Disulfide 15 0.45 -1.5E+02 6.2E-04
67-66-3 Chloroform 6.5 0.195 1.2E-01 2.0E+01 1.6E-06 1.9E-0375-71-8 Dichlorodifluoromethane 2 0.06 -2.1E+01 5.8E-04123-91-1 Dioxane, 1,4-0.97 0.0291 5.6E-01 6.3E+00 5.2E-08 9.3E-04100-41-4 Ethylbenzene 0.82 0.0246 1.1E+00 2.1E+02 2.2E-08 2.4E-05
109-99-9 ~Tetrahydrofuran 2.5 0.075 -4.2E+02 3.6E-05
1634-04-4 Methyl tert-Butyl Ether (MTBE)1.3 0.039 1.1E+01 6.3E+02 3.6E-09 1.2E-05
75-09-2 Methylene Chloride 4.8 0.144 1.0E+02 1.3E+02 1.4E-09 2.3E-04
127-18-4 Tetrachloroethylene 160 4.8 1.1E+01 8.3E+00 4.4E-07 1.2E-01
108-88-3 Toluene 3 0.09 -1.0E+03 1.7E-0575-69-4 Trichlorofluoromethane 31 0.93 --95-63-6 Trimethylbenzene, 1,2,4-4.8 0.144 -1.3E+01 2.3E-03108-67-8 Trimethylbenzene, 1,3,5-0.55 0.0165 -1.3E+01 2.6E-04108-38-3 Xylene, m-3.3 0.099 -2.1E+01 9.5E-04
95-47-6 Xylene, o-1.5 0.045 -2.1E+01 4.3E-04
Cumulative:2.1E-06 1.2E-01
All concentrations are in ug/m3
Output Form 3B
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
North Carolina DEQ Risk Calculator
Risk for Individual Pathways Output Form 1A
Version Date: July 2022
Basis: May 2022 EPA RSL Table
Site ID: 23064-19-060
Exposure Unit ID: Building 2 - Worst Case
Receptor Pathway Carcinogenic
Risk Hazard Index Risk exceeded?
Soil NC NC NC
Groundwater Use*NC NC NC
Soil NC NC NC
Groundwater Use*NC NC NC
Construction Worker Soil NC NC NC
Soil NC NC NC
Surface Water*NC NC NC
Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded?
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air 2.1E-06 1.2E-01 NO
Indoor Air NC NC NC
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air NC NC NC
Indoor Air NC NC NC
Pathway Source
Source Soil NC
Source Groundwater NC
Source Soil NC
Source Groundwater NC
3. NM = Not Modeled
4. NC = Pathway not calculated
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk-based
closure.
Surface Water Exceedence of 2B at Receptor?
Exceedence of 2B at Receptor?
VAPOR INTRUSION CALCULATORS
Resident
Non-Residential Worker
CONTAMINANT MIGRATION CALCULATORS
Target Receptor Concentrations Exceeded?
Groundwater Exceedence of 2L at Receptor?
Exceedence of 2L at Receptor?
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
Notes:
DIRECT CONTACT SOIL AND WATER CALCULATORS
Resident
Non-Residential Worker
Recreator/Trespasser
North Carolina DEQ Risk Calculator
Version Date:
Basis:
Site Name:
Site Address:
DEQ Section:
Site ID:
Exposure Unit ID:
Submittal Date:
Reviewed By:
Building 3 - Worst Case
North Carolina Department of Environmental Quality
Risk Calculator
Dick Keffer Pontiac Buick GMC
1001 Tyvola Road and 450 Minuet Lane
DWM Brownfields Section
23064-19-060
July 2022
May 2022 EPA RSL Table
Prepared By:Hart and Hickman
Hart and Hickman
North Carolina DEQ Risk Calculator
Table of Contents
Version Date: July 2022
Basis: May 2022 EPA RSL Table
Site ID: 23064-19-060
Exposure Unit ID: Building 3 - Worst Case
Form No.
Input Form 1A Complete Exposure Pathways
Input Form 1B Exposure Factors and Target Risks
Input Form 1C Contaminant Migration Parameters
Input Form 1D Sample Statistics
Input Form 2A Soil Exposure Point Concentration Table
Input Form 2B Groundwater Exposure Point Concentration Table
Input Form 2C Surface Water Exposure Point Concentration Table
Input Form 2D Soil Gas Exposure Point Concentration Table
Input Form 2E Indoor Air Exposure Point Concentration Table
Output Form 1A Risk for Individual Pathways
Output Form 1B Sitewide Risk
Output Form 2A Resident Soil
Output Form 2B Resident Groundwater Use
Output Form 2C Non-Residential Worker Soil
Output Form 2D Non-Residential Worker Groundwater Use
Output Form 2E Construction Worker Soil
Output Form 2F Recreator/Trespasser Soil
Output Form 2G Recreator/Trespasser Surface Water
Output Form 3A Resident Groundwater to Indoor Air
Output Form 3B Resident Soil Gas to Indoor Air
Output Form 3C Resident Indoor Air
Output Form 3D Non-Residential Worker Groundwater to Indoor Air
Output Form 3E Non-Residential Worker Soil Gas to Indoor Air
Output Form 3F Non-Residential Worker Indoor Air
Output Form 4A Soil to Groundwater - Forward Mode
Output Form 4B Groundwater to Groundwater - Forward Mode
Output Form 4C Soil to Surface Water - Forward Mode
Output Form 4D Groundwater to Surface Water - Forward Mode
Output Form 4E Soil to Groundwater - Backward Mode
Output Form 4F Groundwater to Groundwater - Backward Mode
Output Form 4G Soil to Surface Water - Backward Mode
Output Form 4H Groundwater to Surface Water - Backward Mode
Output Section 4 - Contaminant Migration Worksheets
Output Section 3 - Vapor Intrusion Calculators
TOC
Description
DATA INPUT SHEETS
Check box
if included
Input Section 1 - Exposure Pathways & Parameters
Input Section 2 - Exposure Point Concentrations
DATA OUTPUT SHEETS
Output Section 1 - Summary Output for All Calculators
Output Section 2 - Direct Contact Soil and Groundwater Calculators
North Carolina DEQ Risk Calculator
Complete Exposure Pathways
Version Date: July 2022
Basis: May 2022 EPA RSL Table
Site ID: 23064-19-060
Exposure Unit ID: Building 3 - Worst Case
Note: Risk output will only be calculated for complete exposure pathways.
Receptor Pathway
Check box if
pathway
complete
Soil
Groundwater Use
Soil
Groundwater Use
Construction Worker Soil
Soil
Surface Water
Groundwater to Indoor Air
Soil Gas to Indoor Air
Indoor Air
Groundwater to Indoor Air
Soil Gas to Indoor Air
Indoor Air
Source Soil
Source Groundwater
Source Soil
Source Groundwater
Resident
Non-Residential Worker
CONTAMINANT MIGRATION PATHWAYS
Groundwater
Surface Water
Input Form 1A
VAPOR INTRUSION PATHWAYS
DIRECT CONTACT SOIL AND WATER PATHWAYS
Resident
Non-Residential Worker
Recreator/Trespasser
North Carolina DEQ Risk Calculator
Exposure Point ConcentrationsVersion Date: July 2022
Basis: May 2022 EPA RSL Table
Site ID: 23064-19-060
Exposure Unit ID: Building 3 - Worst Case
Description of Exposure Point Concentration Selection:
Exposure Point
Concentration
(ug/m3)
Notes:CAS Number Chemical Minimum
Concentration
(Qualifier)
Maximum
Concentration
(Qualifier)
Units Location of
Maximum
Concentration
Detection
Frequency
Range of
Detection
Limits
Concentration
Used for
Screening
Background
Value
Screening Toxicity Value
(Screening Level) (n/c)
Potential
ARAR/TBC
Value
Potential
ARAR/TBC
Source
COPC Flag
(Y/N)
Rationale for
Selection or
Deletion
8.6 71-43-2 Benzene ug/m3
2.4 75-15-0 Carbon Disulfide ug/m3
3.9 67-66-3 Chloroform ug/m3
2.6 74-87-3 Chloromethane ug/m3
10 110-82-7 Cyclohexane ug/m3
2 75-71-8 Dichlorodifluoromethane ug/m3
2.3 75-00-3 Ethyl Chloride (Chloroethane)ug/m3
0.69 100-41-4 Ethylbenzene ug/m3
470 109-99-9 ~Tetrahydrofuran ug/m3
32 110-54-3 Hexane, N-ug/m3
25 67-63-0 Isopropanol ug/m3
16 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m3
3.2 115-07-1 Propylene ug/m3
3.6 127-18-4 Tetrachloroethylene ug/m3
10 108-88-3 Toluene ug/m3
2.1 75-69-4 Trichlorofluoromethane ug/m3
3.7 95-63-6 Trimethylbenzene, 1,2,4-ug/m3
0.61 108-67-8 Trimethylbenzene, 1,3,5-ug/m3
2.9 108-38-3 Xylene, m-ug/m3
1.8 95-47-6 Xylene, o-ug/m3
Input Form 2D
Soil Gas Exposure Point Concentration Table
Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air
Version Date: July 2022
Basis: May 2022 EPA RSL Table
Site ID: 23064-19-060
Exposure Unit ID: Building 3 - Worst Case
CAS #Chemical Name:
Soil Gas
Concentration
(ug/m3)
Calculated Indoor Air
Concentration
(ug/m3)
Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06
Target Indoor Air Conc. for Non-Carcinogens @ THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
71-43-2 Benzene 8.6 0.258 3.6E-01 6.3E+00 7.2E-07 8.2E-03
75-15-0 Carbon Disulfide 2.4 0.072 -1.5E+02 9.9E-05
67-66-3 Chloroform 3.9 0.117 1.2E-01 2.0E+01 9.6E-07 1.1E-0374-87-3 Chloromethane 2.6 0.078 -1.9E+01 8.3E-04110-82-7 Cyclohexane 10 0.3 -1.3E+03 4.8E-0575-71-8 Dichlorodifluoromethane 2 0.06 -2.1E+01 5.8E-04
75-00-3 Ethyl Chloride (Chloroethane)2.3 0.069 -8.3E+02 1.7E-05
100-41-4 Ethylbenzene 0.69 0.0207 1.1E+00 2.1E+02 1.8E-08 2.0E-05
109-99-9 ~Tetrahydrofuran 470 14.1 -4.2E+02 6.8E-03
110-54-3 Hexane, N-32 0.96 -1.5E+02 1.3E-03
67-63-0 Isopropanol 25 0.75 -4.2E+01 3.6E-0378-93-3 Methyl Ethyl Ketone (2-Butanone)16 0.48 -1.0E+03 9.2E-05115-07-1 Propylene 3.2 0.096 -6.3E+02 3.1E-05
127-18-4 Tetrachloroethylene 3.6 0.108 1.1E+01 8.3E+00 1.0E-08 2.6E-03
108-88-3 Toluene 10 0.3 -1.0E+03 5.8E-05
75-69-4 Trichlorofluoromethane 2.1 0.063 --
95-63-6 Trimethylbenzene, 1,2,4-3.7 0.111 -1.3E+01 1.8E-03
108-67-8 Trimethylbenzene, 1,3,5-0.61 0.0183 -1.3E+01 2.9E-04108-38-3 Xylene, m-2.9 0.087 -2.1E+01 8.3E-0495-47-6 Xylene, o-1.8 0.054 -2.1E+01 5.2E-04
Cumulative:1.7E-06 2.9E-02
All concentrations are in ug/m3
Output Form 3B
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
North Carolina DEQ Risk Calculator
Risk for Individual Pathways Output Form 1A
Version Date: July 2022
Basis: May 2022 EPA RSL Table
Site ID: 23064-19-060
Exposure Unit ID: Building 3 - Worst Case
Receptor Pathway Carcinogenic
Risk Hazard Index Risk exceeded?
Soil NC NC NC
Groundwater Use*NC NC NC
Soil NC NC NC
Groundwater Use*NC NC NC
Construction Worker Soil NC NC NC
Soil NC NC NC
Surface Water*NC NC NC
Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded?
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air 1.7E-06 2.9E-02 NO
Indoor Air NC NC NC
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air NC NC NC
Indoor Air NC NC NC
Pathway Source
Source Soil NC
Source Groundwater NC
Source Soil NC
Source Groundwater NC
3. NM = Not Modeled
4. NC = Pathway not calculated
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk-based
closure.
Surface Water Exceedence of 2B at Receptor?
Exceedence of 2B at Receptor?
VAPOR INTRUSION CALCULATORS
Resident
Non-Residential Worker
CONTAMINANT MIGRATION CALCULATORS
Target Receptor Concentrations Exceeded?
Groundwater Exceedence of 2L at Receptor?
Exceedence of 2L at Receptor?
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
Notes:
DIRECT CONTACT SOIL AND WATER CALCULATORS
Resident
Non-Residential Worker
Recreator/Trespasser
North Carolina DEQ Risk Calculator
Version Date:
Basis:
Site Name:
Site Address:
DEQ Section:
Site ID:
Exposure Unit ID:
Submittal Date:
Reviewed By:
Building 4 - Worst Case
North Carolina Department of Environmental Quality
Risk Calculator
Dick Keffer Pontiac Buick GMC
1001 Tyvola Road and 450 Minuet Lane
DWM Brownfields Section
23064-19-060
July 2022
May 2022 EPA RSL Table
Prepared By:Hart and Hickman
Hart and Hickman
North Carolina DEQ Risk Calculator
Table of Contents
Version Date: July 2022
Basis: May 2022 EPA RSL Table
Site ID: 23064-19-060
Exposure Unit ID: Building 4 - Worst Case
Form No.
Input Form 1A Complete Exposure Pathways
Input Form 1B Exposure Factors and Target Risks
Input Form 1C Contaminant Migration Parameters
Input Form 1D Sample Statistics
Input Form 2A Soil Exposure Point Concentration Table
Input Form 2B Groundwater Exposure Point Concentration Table
Input Form 2C Surface Water Exposure Point Concentration Table
Input Form 2D Soil Gas Exposure Point Concentration Table
Input Form 2E Indoor Air Exposure Point Concentration Table
Output Form 1A Risk for Individual Pathways
Output Form 1B Sitewide Risk
Output Form 2A Resident Soil
Output Form 2B Resident Groundwater Use
Output Form 2C Non-Residential Worker Soil
Output Form 2D Non-Residential Worker Groundwater Use
Output Form 2E Construction Worker Soil
Output Form 2F Recreator/Trespasser Soil
Output Form 2G Recreator/Trespasser Surface Water
Output Form 3A Resident Groundwater to Indoor Air
Output Form 3B Resident Soil Gas to Indoor Air
Output Form 3C Resident Indoor Air
Output Form 3D Non-Residential Worker Groundwater to Indoor Air
Output Form 3E Non-Residential Worker Soil Gas to Indoor Air
Output Form 3F Non-Residential Worker Indoor Air
Output Form 4A Soil to Groundwater - Forward Mode
Output Form 4B Groundwater to Groundwater - Forward Mode
Output Form 4C Soil to Surface Water - Forward Mode
Output Form 4D Groundwater to Surface Water - Forward Mode
Output Form 4E Soil to Groundwater - Backward Mode
Output Form 4F Groundwater to Groundwater - Backward Mode
Output Form 4G Soil to Surface Water - Backward Mode
Output Form 4H Groundwater to Surface Water - Backward Mode
Output Section 4 - Contaminant Migration Worksheets
Output Section 3 - Vapor Intrusion Calculators
TOC
Description
DATA INPUT SHEETS
Check box
if included
Input Section 1 - Exposure Pathways & Parameters
Input Section 2 - Exposure Point Concentrations
DATA OUTPUT SHEETS
Output Section 1 - Summary Output for All Calculators
Output Section 2 - Direct Contact Soil and Groundwater Calculators
North Carolina DEQ Risk Calculator
Complete Exposure Pathways
Version Date: July 2022
Basis: May 2022 EPA RSL Table
Site ID: 23064-19-060
Exposure Unit ID: Building 4 - Worst Case
Note: Risk output will only be calculated for complete exposure pathways.
Receptor Pathway
Check box if
pathway
complete
Soil
Groundwater Use
Soil
Groundwater Use
Construction Worker Soil
Soil
Surface Water
Groundwater to Indoor Air
Soil Gas to Indoor Air
Indoor Air
Groundwater to Indoor Air
Soil Gas to Indoor Air
Indoor Air
Source Soil
Source Groundwater
Source Soil
Source Groundwater
Resident
Non-Residential Worker
CONTAMINANT MIGRATION PATHWAYS
Groundwater
Surface Water
Input Form 1A
VAPOR INTRUSION PATHWAYS
DIRECT CONTACT SOIL AND WATER PATHWAYS
Resident
Non-Residential Worker
Recreator/Trespasser
North Carolina DEQ Risk Calculator
Exposure Point ConcentrationsVersion Date: July 2022
Basis: May 2022 EPA RSL Table
Site ID: 23064-19-060
Exposure Unit ID: Building 4 - Worst Case
Description of Exposure Point Concentration Selection:
Exposure Point
Concentration
(ug/m3)
Notes:CAS Number Chemical Minimum
Concentration
(Qualifier)
Maximum
Concentration
(Qualifier)
Units Location of
Maximum
Concentration
Detection
Frequency
Range of
Detection
Limits
Concentration
Used for
Screening
Background
Value
Screening Toxicity Value
(Screening Level) (n/c)
Potential
ARAR/TBC
Value
Potential
ARAR/TBC
Source
COPC Flag
(Y/N)
Rationale for
Selection or
Deletion
3.2 75-15-0 Carbon Disulfide ug/m3
21 67-66-3 Chloroform ug/m3
1.1 74-87-3 Chloromethane ug/m3
2.3 75-71-8 Dichlorodifluoromethane ug/m3
0.96 100-41-4 Ethylbenzene ug/m3
1.4 109-99-9 ~Tetrahydrofuran ug/m3
4.7 67-63-0 Isopropanol ug/m3
0.73 100-42-5 Styrene ug/m3
1.7 127-18-4 Tetrachloroethylene ug/m3
5.4 108-88-3 Toluene ug/m3
3.3 76-13-1 Trichloro-1,2,2-trifluoroethane, 1,1,2-ug/m3
2.4 75-69-4 Trichlorofluoromethane ug/m3
5.5 95-63-6 Trimethylbenzene, 1,2,4-ug/m3
1.2 108-67-8 Trimethylbenzene, 1,3,5-ug/m3
3.9 108-38-3 Xylene, m-ug/m3
1.9 95-47-6 Xylene, o-ug/m3
Input Form 2D
Soil Gas Exposure Point Concentration Table
Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air
Version Date: July 2022
Basis: May 2022 EPA RSL Table
Site ID: 23064-19-060
Exposure Unit ID: Building 4 - Worst Case
CAS #Chemical Name:
Soil Gas
Concentration
(ug/m3)
Calculated Indoor Air
Concentration
(ug/m3)
Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06
Target Indoor Air Conc. for Non-Carcinogens @ THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non-
Carcinogenic
Hazard
Quotient
75-15-0 Carbon Disulfide 3.2 0.096 -1.5E+02 1.3E-04
67-66-3 Chloroform 21 0.63 1.2E-01 2.0E+01 5.2E-06 6.2E-03
74-87-3 Chloromethane 1.1 0.033 -1.9E+01 3.5E-0475-71-8 Dichlorodifluoromethane 2.3 0.069 -2.1E+01 6.6E-04100-41-4 Ethylbenzene 0.96 0.0288 1.1E+00 2.1E+02 2.6E-08 2.8E-05109-99-9 ~Tetrahydrofuran 1.4 0.042 -4.2E+02 2.0E-05
67-63-0 Isopropanol 4.7 0.141 -4.2E+01 6.8E-04
100-42-5 Styrene 0.73 0.0219 -2.1E+02 2.1E-05
127-18-4 Tetrachloroethylene 1.7 0.051 1.1E+01 8.3E+00 4.7E-09 1.2E-03
108-88-3 Toluene 5.4 0.162 -1.0E+03 3.1E-0576-13-1 Trichloro-1,2,2-trifluoroethane, 1,1,2-3.3 0.099 -1.0E+03 1.9E-0575-69-4 Trichlorofluoromethane 2.4 0.072 --
95-63-6 Trimethylbenzene, 1,2,4-5.5 0.165 -1.3E+01 2.6E-03
108-67-8 Trimethylbenzene, 1,3,5-1.2 0.036 -1.3E+01 5.8E-04
108-38-3 Xylene, m-3.9 0.117 -2.1E+01 1.1E-03
95-47-6 Xylene, o-1.9 0.057 -2.1E+01 5.5E-04
Cumulative:5.2E-06 1.4E-02
All concentrations are in ug/m3
Output Form 3B
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals.
North Carolina DEQ Risk Calculator
Risk for Individual Pathways Output Form 1A
Version Date: July 2022
Basis: May 2022 EPA RSL Table
Site ID: 23064-19-060
Exposure Unit ID: Building 4 - Worst Case
Receptor Pathway Carcinogenic
Risk Hazard Index Risk exceeded?
Soil NC NC NC
Groundwater Use*NC NC NC
Soil NC NC NC
Groundwater Use*NC NC NC
Construction Worker Soil NC NC NC
Soil NC NC NC
Surface Water*NC NC NC
Receptor Pathway Carcinogenic Risk Hazard Index Risk exceeded?
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air 5.2E-06 1.4E-02 NO
Indoor Air NC NC NC
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air NC NC NC
Indoor Air NC NC NC
Pathway Source
Source Soil NC
Source Groundwater NC
Source Soil NC
Source Groundwater NC
3. NM = Not Modeled
4. NC = Pathway not calculated
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk-based
closure.
Surface Water Exceedence of 2B at Receptor?
Exceedence of 2B at Receptor?
VAPOR INTRUSION CALCULATORS
Resident
Non-Residential Worker
CONTAMINANT MIGRATION CALCULATORS
Target Receptor Concentrations Exceeded?
Groundwater Exceedence of 2L at Receptor?
Exceedence of 2L at Receptor?
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
Notes:
DIRECT CONTACT SOIL AND WATER CALCULATORS
Resident
Non-Residential Worker
Recreator/Trespasser
North Carolina DEQ Risk Calculator