24001 REEP-LRC II Additional Assessment Report_20210603

#C-1269 Engineering #C-245 Geology
Additional Brownfields Assessment Report
REEP-LRC II
1900 & 1942 Continental Boulevard
Charlotte, Mecklenburg County,
North Carolina
Brownfields Project No. 24001-20-060
H&H Job No. SSP-001
June 3, 2021
6/3/21
i
Additional Brownfields Assessment Report REEP-LRC II
1900 & 1942 Continental Boulevard Charlotte, North Carolina Brownfields Project No. 24001-20-060 H&H Job No. SSP-001
Table of Contents
1.0 Introduction .............................................................................................................................1
2.0 Historical Assessment Activities (PIN 20308301) .................................................................3
3.0 Sub-Slab Vapor Assessment Activities .................................................................................5
3.1 Sub-Slab Vapor Sampling Methodology ...............................................................................5
3.2 Sub-Slab Vapor Sampling Analytical Results .......................................................................7
3.3 DEQ DWM Risk Calculations ..............................................................................................7
4.0 Summary and Conclusions.....................................................................................................9

List of Tables

Table 1 Summary of Sub-Slab Vapor Analytical Data

List of Figures

Figure 1 Site Location Map
Figure 2 Sample Location Map

List of Appendices

Appendix A Sub-Slab Vapor QA/QC Field Forms
Appendix B Laboratory Analytical Report
Appendix C DEQ Risk Calculator (January 2021)
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Additional Brownfields Assessment Report REEP-LRC II
1900 & 1942 Continental Boulevard Charlotte, North Carolina Brownfields Project No. 24001-20-060 H&H Job No. SSP-001
1.0 Introduction

Hart & Hickman, PC (H&H) has prepared this Additional Brownfields Assessment Report on
behalf of SPWF-Continental Warehouse, LLC for the REEP-LRC II Brownfields property
(Brownfields Project No. 24001-20-060). The Brownfields property is located at 1900 and 1942
Continental Boulevard in Charlotte, Mecklenburg County, North Carolina (Site) and consists of
four parcels of land that total approximately 118.74 acres. Specifically, the Site is located at
1900 Continental Boulevard (Mecklenburg County Parcel Identification Number [PIN]
20308301), a parcel east of 1900 Continental Boulevard with no established address (PIN
20308305), 1942 Continental Boulevard (PIN 20308306), and a parcel east of Interstate I-485
with no established address (PIN 20302139). A Brownfields agreement for Site PIN 20308305
between the North Carolina Department of Environmental Quality (DEQ) and the former PD
was executed on July 24, 2020 under Brownfields Project No. 17047-13-060. A Site location
map is provided as Figure 1.

The Brownfields property and surrounding area was formerly occupied by the United States
Navy from approximately 1949 through 1967. Former use of the Site as a Naval Ammunitions
Depot (NAD) included operations consisting of numerous buildings surrounded by protective
soil berms based on a 1950 aerial photograph and a 1950 map of the former NAD. Following
NAD operations, the Site was occupied by Continental Tire and used for tire manufacturing from
1967 through 2013.

Proposed redevelopment for the Brownfields property includes installation of a pre-fabricated
fire pump house in the southwestern portion of the Site (PIN 20308301), renovations to the
northwestern portion of the existing warehouse building (PIN 20308301), installation of a new
road that will circulate existing structures on PIN 20308301 and allow access to future
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development on PIN 20308305, and installation of an approximately 333,000 square foot (sq ft)
building with associated parking, access drives, and a stormwater retention pond (PIN
20308305).

The existing warehouse building located on PIN 20308301 is currently divided into four tenant
spaces. The northern tenant space is currently vacant. The central portion of the building is
occupied by Snyder’s Lance, Inc. and utilized for warehousing and distribution of food products.
The southeastern portion of the building is occupied by Deufol Charlotte, LLC (Deufol) and is
utilized for the manufacturing and distribution of packaging and shipping materials. The
southwestern portion of the building is occupied by SnapAV an electronics manufacturer and
distributor. There are no current redevelopment plans for PINs 20308306 and 20302139. A Site
location map is provided as Figure 1, and the Site and redevelopment plans are shown on Figure
2.

SPWF-Continental Warehouse, LLC received eligibility into the DEQ Brownfields Program via
a Letter of Eligibility dated February 27, 2020. On September 24, 2020, H&H, the PD, and the
PD’s legal counsel participated in a conference call with DEQ Brownfields personnel to discuss
Site history, areas of potential environmental concern, proposed redevelopment plans, potential
data gaps, and the scope of Brownfields assessment activities needed to address the data gaps.
To address DEQ’s request for additional assessment on PINs 20308301 and 20302139, H&H
submitted an Additional Brownfields Assessment Work Plan (Work Plan) dated November 19,
2020, and revised on February 4, 2021. The Work Plan was approved by DEQ Brownfields in
an email dated February 19, 2021.

This report documents vapor intrusion assessment activities conducted within the existing
warehouse building located on PIN 20308301. Assessment activities proposed for PIN
20302139 will be conducted at a later date and documented under separate cover. A summary of
historical assessment activities conducted on PIN 20308301 and recently completed vapor
intrusion assessment activities for PIN 20308301 are provided in the following sections.
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2.0 Historical Assessment Activities (PIN 20308301)

Multiple phases of environmental assessments have been conducted at the Brownfields property
since 2007. The assessments were conducted under the purview of the DEQ Underground
Storage Tank (UST) Section, Inactive Hazardous Sites Branch (IHSB), and the Brownfields
Program. Known releases associated with PIN 20308301 include the former Wash Rack area
(UST Section No Further Action status in June 2010), the former Boiler Day Tanks area (UST
Section No Further Action status in June 2010), the former Naphtha UST area (UST Section
Conditional No Further Action status and Notice of Residual Petroleum filed in 2003), the
former Rail Off-Loading Area (UST Section Conditional No Further Action status in January
2020), and the former Buffing Dust Shed (active IHSB incident). H&H understands that
Continental Tire is identified by DEQ as the responsible party for the active Buffing Dust Shed
IHSB incident, and that ongoing off-Site vapor intrusion assessment activities are currently
underway.

Historical soil assessment activities completed on PIN 20308301 in 2009 to assess conditions
associated with the former Buffing Dust Shed indicate low levels of several volatile organic
compounds (VOCs) were detected in surficial soil samples at concentrations above laboratory
detection limits, but below the DEQ Industrial/Commercial Preliminary Soil Remediation Goals
(PSRGs). In addition, low levels of several metals were detected at concentrations above the
laboratory method detection limits, but aside from arsenic (up to 5.5 milligrams per kilogram
[mg/kg]), no metals were detected at concentrations above the DEQ Industrial/Commercial
PSRGs. Concentrations of arsenic and other metals are consistent with published background
ranges in the Site region.

Historical groundwater assessment activities conducted on PIN 20308301 dating back to 2009
have identified the presence of multiple compounds at concentrations above the DEQ 15A North
Carolina Administrative Code (NCAC) 02L .0202 Groundwater Quality Standards (2L
Standards). Compounds detected above 2L Standards include, but are not limited to, iron and
manganese, polycyclic aromatic hydrocarbons (PAHs), and VOCs benzene, 1,1-dichloroethane,
1,2-dichloroethane, carbon tetrachloride, tetrachloroethylene (PCE), trichloroethylene (TCE),
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and vinyl chloride.

As part of property transaction due diligence conducted on PIN 20308301 in November 2019,
H&H performed sampling activities to assess potential structural vapor intrusion into the existing
warehouse building. Specifically, the vapor intrusion assessment activities included installation
and sampling of nine sub-slab vapor points in the Deufol tenant space (SS-6 through SS-9) and a
vacant tenant space (SS-3 through SS-5) due to their proximity to documented soil and
groundwater impacts associated with the aforementioned UST and IHSB incidents. Two sub-
slab vapor points (SS-1 and SS-2) were also installed in the northwestern portion of the
warehouse building where former tire sealant operations were conducted.

The vapor intrusion assessment activities were conducted in accordance with DEQ Division of
Waste Management (DWM) Vapor Intrusion Guidance (VI Guidance) dated March 2018.
Laboratory analytical results indicated that low levels of VOCs were detected above laboratory
method detection limits in each sub-slab vapor sample. Of the compounds detected, 1,1-
dichloroethane was detected at a concentration that exceeds the January 2021 Non-Residential
Sub-Slab and Exterior Soil Gas Screening Level (SGSL) of 770 micrograms per cubic meter
(µg/m3) in sub-slab vapor sample SS-9 (2,200 µg/m3) in the administrative office area. No other
compounds were detected above Non-Residential SGSLs. In addition, DEQ risk calculator
results indicated calculated cumulative risks for a non-residential worker are within the
acceptable carcinogenic risk of less than 1 x 10-4 and less than a hazard index of 1.

H&H further evaluated the potential for vapor intrusion utilizing groundwater data from
monitoring wells installed under or within 100 ft of the Site building. Based on comparison of
groundwater analytical data to the February 2018 DEQ Non-Residential Ground Water
Screening Levels (GWSLs), no exceedances were identified except for a concentration of
cyclohexane (2,000 micrograms per liter [µg/L]) detected in MW002 in March 2015. The
cyclohexane concentration was above its DWM Non-Residential GWSL of 860 µg/L. However,
cyclohexane was not detected above laboratory reporting limits in any of the nine sub-slab vapor
samples. As such, cyclohexane in groundwater does not appear to pose a vapor intrusion risk.

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3.0 Sub-Slab Vapor Assessment Activities

On March 9, 2021, H&H completed sub-slab vapor sampling activities at the Site to further
evaluate the potential for structural vapor intrusion into the warehouse building on PIN
20308301. During the event, three (3) temporary sub-slab vapor monitoring points (SS-10
through SS-12) were installed and sampled in the loading dock area of the Deufol tenant space.
The sub-slab vapor sample locations (denoted by SS nomenclature) are shown in Figure 2.
Details of the sub-slab vapor assessment activities and results are provided in the following
sections.

3.1 Sub-Slab Vapor Sampling Methodology
The sub-slab vapor monitoring points were installed by utilizing a 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.
Following concrete borehole advancement, loose concrete cuttings were removed from the
boring using a bottlebrush and vacuum with a high efficiency particulate air (HEPA) filter. 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 hammer. Once the vapor pin
assembly was secured in the pilot hole, ¼-inch diameter Teflon® sample tubing was attached to
the vapor pin assembly sample port barb. Prior to sampling, sub-slab vapor monitoring points
were allowed to equilibrate for at least two hours following installation.

As part of sub-slab vapor sample collections procedures, “shut-in” tests and leak checks were
performed at each sub-slab vapor monitoring point. The purpose of the shut-in test and helium
leak check is to ensure that short circuiting with ambient air does not occur during sampling. A
description of the shut-in test and helium leak testing procedures is provided below.

The shut-in test was conducted by connecting an in-line airflow controller with a vacuum gauge
to a laboratory supplied batch-certified 1-liter stainless steel Summa® canister and sealing the
flow regulator with a laboratory provided brass nut and ferrule assembly to form an air-tight seal.
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The airflow regulator was pre-set by the laboratory to regulate the sub-slab vapor intake rate to
approximately 200 milliliters per minute. 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 occurs. Because the vacuum readings remained the same before and after
closure of the canister sample valve, the shut-in tests were considered successful for each sub-
slab vapor point.

Following successful shut-in tests, leak checks were conducted by constructing a shroud around
the sample train at each sampling point and flooding the air with helium gas. Helium
concentrations inside the shroud were measured using a calibrated helium gas detector and
maintained at concentrations of approximately 15% to 30% for the duration of the leak check.
Using a syringe and three-way valve, a helium sample was collected from the Teflon® sample
tubing outside the shroud and into a Tedlar bag. The helium sample was analyzed using the
helium gas detector to ensure that helium concentrations were less than 10% of the helium
concentrations measure within the shroud. All of the sub-slab vapor monitoring points passed
the leak check.

Following a successful leak check, the intake valve on the Summa® canister was fully opened to
begin collection of the sub-slab vapor sample. Vacuum readings on the Summa® canister were
recorded prior to and following the sampling period to ensure adequate sample volume was
collected. Per laboratory standard operating procedures, a vacuum of between approximately
three and seven inches of mercury was maintained on the sample canister until the conclusion of
the sampling event. Laboratory provided vacuum gauges used for collection of field
measurements are intended for qualitative field use. As such, field measured pre- and post-
sampling vacuum readings are not expected to impact laboratory analytical results based on other
considerations such as sub-slab vapor sampling procedures (i.e., shut-in tests and leak checks)
and post-sampling canister pressures measured by the laboratory. Therefore, H&H concludes
that field and laboratory data generally meet project objectives and are usable for the intended
purpose.

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After sample collection, the Summa® canister sample valves were closed prior to disassembly of
the sampling train. The Summa® canisters were then placed in laboratory supplied shipping
containers, properly labeled, and shipped under standard chain-of-custody protocols to Con-test
for analysis of VOCs by EPA Method TO-15. For quality assurance/quality control (QA/QC)
purposes, a duplicate sub-slab vapor sample (SS-DUP) was collected from sub-slab vapor
monitoring point SS-10. Upon receipt of the samples, the laboratory recorded the final received
vacuum pressure for each Summa canister. The initial, post-sampling, and lab receipt canister
vacuum pressures are indicated on the sub-slab vapor QA/QC field forms in Appendix A and in
the laboratory analytical reports included in Appendix B.

Upon completion of the final sampling event, the sub-slab vapor sampling point locations were
estimated in the field using known benchmarks (i.e., walls, doors, etc.) and then abandoned to
match surrounding surface conditions.

3.2 Sub-Slab Vapor Sampling Analytical Results

A tabular summary of the November 2019 and March 2021 sub-slab vapor sample analytical
results is presented in Table 1. The laboratory analytical report and chain of custody record for
the March 2021 are provided in Appendix B. Sub-slab vapor sample analytical results were
compared to the January 2021 DEQ Non-Residential SGSLs.

Laboratory analytical results indicate that low levels of VOCs were detected above laboratory
method detection limits, but below Non-Residential SGSLs, in each sub-slab vapor sample. In
addition, 1,1-dichloroethane, a compound that was previously detected at a concentration above
the Non-Residential SGSL, was not detected above laboratory method detection limits during the
March 2021 sampling event.

3.3 DEQ DWM Risk Calculations
The DEQ DWM SGSLs are conservative and based on a lifetime incremental cancer risk (LICR)
for potential carcinogenic risks of 1 x 10-6 and a non-carcinogenic hazard quotient (HQ) of 0.2
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for potential non-carcinogenic risks. The DEQ acceptable risk level for potential carcinogenic
risks is 1 x 10-4 or less and the acceptable level for non-carcinogenic risks is a hazard index (HI)
less than 1.

H&H utilized the January 2021 DEQ risk calculator and a non-residential land use scenario
(based on the current and future use in the warehouse at the Site) to evaluate calculated
cumulative risks for the soil gas (i.e., sub-slab vapor) to indoor air vapor intrusion pathway in the
Deufol tenant space. H&H calculated cumulative risks using the highest concentrations of
compounds detected in any sub-slab vapor sample collected during the November 2019 and/or
March 2021 sampling events to check a hypothetical worst-case scenario. Results of the risk
calculations are provided in Table 1, summarized below, and included in Appendix C.

Sub-Slab Vapor
Sample Location
Non-Residential Worker
Carcinogenic Risk Hazard Index
Deufol Tenant Space 4.5 x 10-6 0.28

As shown in the table above, calculated cumulative risks for a non-residential worker are within
the acceptable carcinogenic risk of less than 1 x 10-4 and less than a hazard index of 1.

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4.0 Summary and Conclusions

H&H has completed vapor intrusion assessment activities for the warehouse building (PIN
20308301) of the REEP-LRC II Brownfields property located in Charlotte, North Carolina. The
assessment activities were conducted to further evaluate potential structural vapor intrusion into
the Deufol tenant space as requested by DEQ Brownfields.

Results of sub-slab vapor assessment activities indicate that calculated cumulative risk values for
the soil gas to indoor air vapor intrusion pathway are within the acceptable carcinogenic risk of
less than 1 x 10-4 and less than a hazard index of 1.

In summary, results of soil vapor intrusion assessment activities indicate that structural vapor
intrusion into the Deufol tenant space does not pose a significant risk for typical commercial or
industrial uses (i.e., those without sensitive populations). Based on the results of the sub-slab
vapor samples, risk calculations, and previous groundwater data review, H&H does not
recommend mitigation measures or further assessment for the Deufol tenant space at this time.

Table 1
Summary of Sub-Slab Vapor Analytical Data
REEP-LRC II
1900 1942 Continental Blvd.
Charlotte, North Carolina
H&H Job No. SSP-001
SS-5 SS-DUP SS-10 SS-DUP
Sample Date 11/1/2019 11/1/2019 11/1/2019 11/1/2019 11/1/2019 11/1/2019 11/1/2019 11/1/2019 11/1/2019 11/1/2019 3/9/2021 3/9/2021 3/9/2021 3/9/2021
Former Mixing and
Application Area
Former Bulk
Chemical Storage
Area
Administrative
Office Area Bulk Storage Area Bulk Storage Area
Climate Controlled
Storage Area Bulk Storage Area Administrative
Office Area
Acetone 2,700,000 190 26 26 300 <66 <66 51 30 580 81 67 78 370 820
Benzene 160 0.32 J <0.26 0.31 J 4.5 <2.6 <2.6 <0.26 0.27 J 3.3 2.9 0.98 <0.19 <0.19 2.2
Carbon disulfide 61,000 1.2 J <0.43 4.7 J 8.4 <4.3 <4.3 <0.43 4.6 J 4.9 J 6.4 <1.6 <1.6 <1.6 <1.6
Chloroform 53 <0.36 <0.36 0.51 J <0.36 <3.6 <3.6 <0.36 <0.36 <0.36 2.3 4.4 5.1 7.1 4.2
Dichlorodifluoromethane (Freon 12) 8,800 2.7 2.8 2.7 <0.43 <4.3 <4.3 2.7 2.7 <0.43 2.9 <0.31 <0.31 <0.31 <0.31
1,1-Dichloroethane 770 <0.25 <0.25 4.3 <0.25 <2.5 <2.5 <0.25 <0.25 <0.25 2,200 <0.25 <0.25 <0.25 <0.25
1,1-Dichloroethylene 18,000 <0.43 <0.43 3.8 <0.43 160 170 <0.43 <0.43 <0.43 2,200 <0.43 <0.43 <0.43 <0.43
cis-1,2-Dichloroethylene NE <0.32 <0.32 20 <0.32 <3.2 <3.2 <0.32 <0.32 <0.32 <0.32 <0.27 <0.27 <0.27 6.9
trans-1,2-Dichloroethylene 3,500 <0.32 <0.32 0.76 J <0.32 <3.2 <3.2 <0.32 <0.32 <0.32 <0.32 <0.23 <0.23 <0.23 <0.23
1,4-Dioxane 250 25 <4.6 <4.6 <4.6 <46 <46 <4.6 <4.6 <4.6 7.0 J <2.0 <2.0 16 14
Ethanol NE 240 790 250 330 130 J 140 J 160 170 210 2,000 350 430 810 1,200
Ethyl Acetate 6,100 <0.54 <0.54 <0.54 <0.54 <5.4 <5.4 <0.54 <0.54 <0.54 2.9 <4.3 <4.3 <4.3 <4.3
Ethylbenzene 490 <0.50 <0.50 <0.50 1.4 <5.0 <5.0 <0.50 0.71 J 30 0.83 J 4.5 5.5 5.9 4.0
4-Ethyltoluene NE <0.60 <0.60 <0.60 0.90 J <6.0 <6.0 <0.60 <0.60 4.5 3.1 2.2 <0.30 <0.30 <0.30
Heptane 35,000 <0.48 <0.48 <0.48 5.5 <4.8 <4.8 <0.48 <0.48 <0.48 0.70 J <0.35 <0.35 <0.35 <0.35
Hexane 61,000 <1.2 <1.2 <1.2 2.1 J <12 <12 <1.2 <1.2 <1.2 <1.2 <1.3 5.0 J <1.3 <1.3
2-Hexanone (Methyl butyl ketone) 2,600 <0.49 <0.49 <0.49 5.4 <4.9 <4.9 <0.49 <0.49 <0.49 <0.49 <0.46 <0.46 <0.46 <0.46
Isopropanol 18,000 13 J 7.6 J 7.1 J 40 <9.0 <9.0 13 J 10 J <0.90 140 58 40 130 74
Methyl ethyl ketone (2-Butanone) 440,000 3.9 J 5.9 J 5.5 J 33 <11 <11 4.9 J 4.2 J 21 J 8.4 J <2.0 6.8 J 20 J 45
4-Methyl-2-pentanone (MIBK) 260,000 3.8 6.2 <0.43 7.8 <4.3 <4.3 <0.43 1.9 14 <0.43 <0.43 <0.43 <0.43 <0.43
Naphthalene 36 0.88 J <0.80 <0.80 <0.80 <8.0 <8.0 <0.80 <0.80 18 <0.80 <0.59 <0.59 <0.59 11
Styrene 88,000 <0.53 <0.53 <0.53 0.72 J <5.3 <5.3 <0.53 <0.53 <0.53 <0.53 <0.24 <0.24 <0.24 <0.24
Tetrachloroethylene 3,500 11 12 6.1 25 280 310 64 16 2,500 52 50 55 1,500 240
Tetrahydrofuran 180,000 1.8 J <0.59 <0.59 <0.59 <5.9 <5.9 <0.59 <0.59 <0.59 2.5 <1.5 <1.5 <1.5 <1.5
Toluene 440,000 0.78 <0.39 0.50 J 7.9 <3.9 <3.9 <0.39 0.56 J 73 3.7 7.4 7.8 16 8.2
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113) 440,000 <1.2 <1.2 <1.2 <1.2 <12 <12 <1.2 1.7 J 3.6 J 7.7 <1.2 <1.2 <1.2 <1.2
1,1,1-Trichloroethane 440,000 0.50 J 1.1 0.46 J 2.6 15,000 15,000 0.68 J <0.41 12 2.2 <0.36 <0.36 6.5 7.4
Trichloroethylene 180 4.3 <0.43 12 1.6 <4.3 <4.3 1.1 J 4.5 23 20 <0.40 <0.40 4.4 69
Trichlorofluoromethane (Freon 11) NE 5.3 13 9.1 26 100 120 3.7 J 2.5 J 11 1.7 J 8.5 9.4 13 3.9 J
1,2,4-Trimethylbenzene 5,300 <0.63 <0.63 <0.63 <0.63 <6.3 <6.3 <0.63 <0.63 17 <0.63 9.6 11 4.1 6.4
1,3,5-Trimethylbenzene 5,300 <0.62 <0.62 <0.62 1.0 <6.2 <6.2 <0.62 <0.62 5.2 6.4 4.9 5.7 1.0 1.7
Vinyl chloride 280 <0.32 <0.32 <0.32 <0.32 <3.2 <3.2 <0.32 <0.32 <0.32 1.5 <0.29 <0.29 <0.29 <0.29
m-/p-Xylenes 8,800 1.4 J <1.0 <1.0 2.7 <10 <10 <1.0 2.8 99 2.5 25 28 18 12
o-Xylene 8,800 <0.54 <0.54 <0.54 1.4 <5.4 <5.4 <0.54 1.0 30 1.0 10 11 5.9 4.7
Risk Evaluation (Soil Gas to Indoor Air)(2)
Non-Residential Carcinogenic Risk --
Non-Residential Hazard Index --
Notes:
Bold and underlined concentrations and yellow highlighting indicates concentration exceeds Non-Residential SGSLs (January 2021).
VOCs (TO-15) (µg/m3)
Non-Residential
SGSLs1
SS-11 SS-12Sample ID
Sample Location
(PIN 20308301)
Former Continental Tire North America Vacant Tenant Space Deufol Tenant Space
J = compound was detected above the laboratory method detection limit but below the laboratory reporting limit resulting in an estimated concentration.
Only compounds with at least one detection above laboratory method detection limits limits are shown on this table.
Compound concentrations are reported in micrograms per cubic meter (μg/m3).
Laboratory analytical method is shown in parentheses.
VOCs = volatile organic compounds; NE= Not Established; < = less than laboratory method detection limits; -- = Not Applicable
2) Risk evaluation performed using the January 2021 DEQ Risk Calculator for the soil gas to indoor air vapor intrusion pathway.
1) NC Department of Environmental Quality Sub-Slab and Exterior Soil Gas Screening Levels (SGSLs) (January 2021).
SS-10SS-1 SS-2 SS-3 SS-4 SS-6 SS-7 SS-8 SS-9
SS-5
Forklift Maintenance Area
4.5E-06
0.28
Loading Dock Area
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6/3/2021
Table 1 (Page 1 of 1)
Hart & Hickman, PC
Copyright:© 2013 National Geographic Society, i-cubed
SITE LOCATION MAP
REEP-LRC II1900 CONTINENTAL BOULEVARD
CHARLOTTE, NORTH CAROLINA
DATE: 5-21-20
JOB NO: SSP-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
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U.S.G.S. QUADRANGLE MAP
CHARLOTTE WEST, NORTH CAROLINA 2013
QUADRANGLE7.5 MINUTE SERIES (TOPOGRAPHIC)
SS-1
SS-2
SS-3
SS-4
SS-5
SS-6
SS-7
SS-8
SS-9
SB-10
SB-2/
VMP-2
SB-1/
VMP-1
SB-3/
VMP-3
SB-5/
VMP-5
SB-4/
VMP-4
SB-6/
VMP-6
SB-7/
VMP-7
SB-8/
VMP-8
SB-9
TMW-1
TMW-2
TMW-3
TMW-4
ASH-1
MW001 MW001D
MW002MW EW2
MW002D
MW EW1
MW005
MW006
MW007
MW004
MW008
MW009 MW003
S-5
S-7
S-4
S-6
S-1
S-3
S-2
S-8
S-9
BASE-3
BASE-2
BASE-1
SS-12
SS-11
SS-10
REVISION NO. 0
LEGEND
REEP-LRC BROWNFIELDS PROPERTY BOUNDARY
RAILROAD SPURS
SURFACE WATER FEATURE
APPROXIMATE LOCATION OF FORMER RELEASE/
IMPACTED AREA
PROPOSED REDEVELOPMENT PROJECT
PROPOSED CIRCULATION ROAD
PERMANENT MONITORING WELL LOCATION
(INSTALLED / SAMPLED BY OTHERS)
TEMPORARY MONITORING WELL LOCATION (H&H,
2016 & 2018)
SOIL BORING LOCATION (H&H, 2016 & 2018)
WASTE AND SURFACE SOIL SAMPLE LOCATIONS
(H&H, 2015)
WASTE AND CONFIRMATION SOIL SAMPLE
LOCATIONS (H&H, 2016 & 2018)
CO-LOCATED SOIL BORING / SUB-SLAB VAPOR
SAMPLE LOCATION (H&H, 2016 & 2018)
SUB-SLAB VAPOR SAMPLE LOCATION
(H&H, 2019 & 2021)
JOB NO. SSP-001
DATE: 4-1-21
FIGURE NO. 2
REEP-LRC II
1900 CONTINENTAL BOULEVARD
CHARLOTTE, NORTH CAROLINA
SAMPLE LOCATION MAP
NOTES:
1. AERIAL IMAGERY OBTAINED FROM MECKLENBURG
COUNTY GIS (2020).
2. NFA = NO FURTHER ACTION
3. PIN = MECKLENBURG COUNTY PARCEL IDENTIFICATION
NUMBER
4. * INDICATES ADDITIONAL BURIED WASTE PRESENT
THAT WAS NOT REMOVED.
5. SOIL SAMPLES S-2 AND S-3 REMOVED DURING
EXCAVATION ACTIVITIES COMPLETED IN 2016.
PIONEER AVENUE
CO
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DUKE
ENERGY
PROPERTY
FORMER WASH
RACKS
(NFA 6/24/10)
PETROLEUM FREE
PRODUCT IN MW-2 (2013)FORMER BOILER
DAY TANKS
(NFA 6/24/10)
FORMER BUFFING DUST SHED- CHLORINATED
VOCs IN SOIL & GROUNDWATER
FORMER RAIL OFF-LOADING- CHLORINATED
VOCs IN GROUNDWATER; IMPACTED SOIL
MOSTLY REMOVED (CONDITIONAL NFA 1/27/20)
FORMER NAPHTHA UST
NFA - NORP (SOIL &
GROUNDWATER 2003)
FORMER CONTINENTAL
TIRE NORTH AMERICA
VACANT
SNAP
A.V.
DEUFOL
CHARLOTTE,
LLC
OFFICES
OFFICE
CLIMATE CONTROLLED
STORAGE AREA
2923 South Tryon Street-Suite 100
Charlotte, North Carolina 28203
704-586-0007(p) 704-586-0373(f)
License # C-1269 / #C-245 Geology
PIN 20308306
(1942 CONTINENTAL BOULEVARD)
PIN 20308301
(1900 CONTINENTAL BOULEVARD)
PIN 20308305
(NO ESTABLISHED ADDRESS)
PIN 20302139
(NO ESTABLISHED ADDRESS)
FORMER NO. 6 FUEL AST
(NFA 12/14/09)
LOCATION OF WASTE
DRUMS (REMOVED)*
LOCATION OF ADDITIONAL
DEBRIS REMOVAL
ZINC / BURNED RUBBER
LOCATION (REMOVED)
LOADING DOCK
PROJECT
FIRE LINE
PROJECT
PREMIER REDEVELOPMENT
PROJECT BUILDING FOOTPRINT
FORMER TIRE SEALANT
MIXING AND APPLICATION
FORMER TIRE SEALANT
BULK CHEMICAL STORAGE
PROPOSED STORMWATER POND
FORMER ROAD
LOCATION OF BERMED
AREA FOUND DURING
2018 SITE RECON
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Appendix A Sub-Slab Vapor QA/QC Field Forms

Appendix B Laboratory Analytical Reports
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
March 19, 2021
Jeffrey Ollison
Hart & Hickman - Charlotte, NC
2923 South Tryon Street, Suite 100
Charlotte, NC 28203
Project Location: 1900 Continental Blvd, Charlotte, NC
Client Job Number:
Project Number: SSP-001
Laboratory Work Order Number: 21C0636
Enclosed are results of analyses for samples received by the laboratory on March 11, 2021. 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 26
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL SUMMARY
3/19/2021Hart & Hickman - Charlotte, NC
2923 South Tryon Street, Suite 100
Charlotte, NC 28203
ATTN: Jeffrey Ollison
SSP-001
21C0636
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
1900 Continental Blvd, Charlotte, NC
SSP-001
SS-10 21C0636-01 Sub Slab EPA TO-15
SS-11 21C0636-02 Sub Slab EPA TO-15
SS-12 21C0636-03 Sub Slab EPA TO-15
SS-Dup 21C0636-04 Sub Slab EPA TO-15
Page 2 of 26
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.
EPA TO-15
Qualifications:
Laboratory fortified blank/laboratory control sample recovery is outside of control limits. Reported value for this compound is likely to be
biased on the high side.
Analyte & Samples(s) Qualified:
2-Hexanone (MBK)
B278375-BS1
Continuing calibration verification (CCV) did not meet method specifications and was biased on the low side for this compound.
Analyte & Samples(s) Qualified:
1,2,4-Trichlorobenzene, Naphthalene
21C0636-01[SS-10], 21C0636-02[SS-11], 21C0636-03[SS-12], 21C0636-04[SS-Dup], B278375-BLK1, B278375-BS1, S057919-CCV1
Continuing calibration verification (CCV) did not meet method specifications and was biased on the high side for this compound.
Analyte & Samples(s) Qualified:
2-Hexanone (MBK)
B278375-BS1, S057919-CCV1
Initial calibration verification (ICV) did not meet method specifications and was biased on the low side for this compound. Reported result is
estimated.
Analyte & Samples(s) Qualified:
1,2,4-Trichlorobenzene
21C0636-01[SS-10], 21C0636-02[SS-11], 21C0636-03[SS-12], 21C0636-04[SS-Dup], B278375-BLK1, B278375-BS1, S057919-CCV1
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 26
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: 1900 Continental Blvd, Charlotte
Date Received: 3/11/2021
Work Order: 21C0636Sample Description/Location:
Field Sample #: SS-10
Sample ID: 21C0636-01
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -28
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -6.6
Sampled: 3/9/2021 13:00
Canister ID: 2106
Flow Controller ID: 4038
Sub Description/Location:
Canister Size: 1 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 10 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Acetone 28 8.0 3/18/21 21:50 BRF67 4194.8 11
Benzene 0.31 0.20 3/18/21 21:50 BRF0.98 40.640.058 0.19
Benzyl chloride ND 0.20 3/18/21 21:50 BRFND41.00.090 0.47
Bromodichloromethane ND 0.20 3/18/21 21:50 BRFND41.30.056 0.37
Bromoform ND 0.20 3/18/21 21:50 BRFND42.10.069 0.71
Bromomethane ND 0.20 3/18/21 21:50 BRFND40.780.11 0.41
1,3-Butadiene ND 0.20 3/18/21 21:50 BRFND40.440.15 0.32
2-Butanone (MEK)ND 8.0 3/18/21 21:50 BRFND4240.66 2.0
Carbon Disulfide ND 2.0 3/18/21 21:50 BRFND46.20.51 1.6
Carbon Tetrachloride ND 0.20 3/18/21 21:50 BRFND41.30.053 0.33
Chlorobenzene ND 0.20 3/18/21 21:50 BRFND40.920.048 0.22
Chloroethane ND 0.20 3/18/21 21:50 BRFND40.530.20 0.52
Chloroform 0.89 0.20 3/18/21 21:50 BRF4.4 40.980.048 0.24
Chloromethane ND 0.40 3/18/21 21:50 BRFND40.830.15 0.32
Cyclohexane ND 0.20 3/18/21 21:50 BRFND40.690.098 0.34
Dibromochloromethane ND 0.20 3/18/21 21:50 BRFND41.70.067 0.57
1,2-Dibromoethane (EDB)ND 0.20 3/18/21 21:50 BRFND41.50.052 0.40
1,2-Dichlorobenzene ND 0.20 3/18/21 21:50 BRFND41.20.074 0.44
1,3-Dichlorobenzene ND 0.20 3/18/21 21:50 BRFND41.20.073 0.44
1,4-Dichlorobenzene ND 0.20 3/18/21 21:50 BRFND41.20.045 0.27
Dichlorodifluoromethane (Freon 12)ND 0.20 3/18/21 21:50 BRFND40.990.063 0.31
1,1-Dichloroethane ND 0.20 3/18/21 21:50 BRFND40.810.063 0.25
1,2-Dichloroethane ND 0.20 3/18/21 21:50 BRFND40.810.073 0.30
1,1-Dichloroethylene ND 0.20 3/18/21 21:50 BRFND40.790.11 0.43
cis-1,2-Dichloroethylene ND 0.20 3/18/21 21:50 BRFND40.790.068 0.27
trans-1,2-Dichloroethylene ND 0.20 3/18/21 21:50 BRFND40.790.059 0.23
1,2-Dichloropropane ND 0.20 3/18/21 21:50 BRFND40.920.072 0.33
cis-1,3-Dichloropropene ND 0.20 3/18/21 21:50 BRFND40.910.093 0.42
trans-1,3-Dichloropropene ND 0.20 3/18/21 21:50 BRFND40.910.067 0.30
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)ND 0.20 3/18/21 21:50 BRFND41.40.11 0.79
1,4-Dioxane ND 2.0 3/18/21 21:50 BRFND47.20.56 2.0
Ethanol 190 20 3/19/21 8:08 BRF350 10386.1 11
Ethyl Acetate ND 2.0 3/18/21 21:50 BRFND47.21.2 4.3
Ethylbenzene 1.0 0.20 3/18/21 21:50 BRF4.5 40.870.042 0.18
4-Ethyltoluene 0.46 0.20 3/18/21 21:50 BRF2.2 40.980.062 0.30
Heptane ND 0.20 3/18/21 21:50 BRFND40.820.086 0.35
Hexachlorobutadiene ND 0.20 3/18/21 21:50 BRFND42.10.088 0.94
Hexane ND 8.0 3/18/21 21:50 BRFND4280.36 1.3
2-Hexanone (MBK)ND 0.40 3/18/21 21:50 BRFND41.60.11 0.46
Isopropanol 23 8.0 3/18/21 21:50 BRF58 4201.8 4.5
Methyl tert-Butyl Ether (MTBE)ND 0.20 3/18/21 21:50 BRFND40.720.080 0.29
Methylene Chloride ND 2.0 3/18/21 21:50 BRFND46.90.46 1.6
4-Methyl-2-pentanone (MIBK)ND 0.20 3/18/21 21:50 BRFND40.820.10 0.43
Naphthalene ND 0.20 3/18/21 21:50 BRFV-05 ND 41.00.11 0.59
Propene ND 8.0 3/18/21 21:50 BRFND4140.67 1.2
Styrene ND 0.20 3/18/21 21:50 BRFND40.850.057 0.24
1,1,2,2-Tetrachloroethane ND 0.20 3/18/21 21:50 BRFND41.40.053 0.37
Page 4 of 26
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: 1900 Continental Blvd, Charlotte
Date Received: 3/11/2021
Work Order: 21C0636Sample Description/Location:
Field Sample #: SS-10
Sample ID: 21C0636-01
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -28
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -6.6
Sampled: 3/9/2021 13:00
Canister ID: 2106
Flow Controller ID: 4038
Sub Description/Location:
Canister Size: 1 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 10 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Tetrachloroethylene 7.4 0.20 3/18/21 21:50 BRF50 41.40.065 0.44
Tetrahydrofuran ND 2.0 3/18/21 21:50 BRFND45.90.49 1.5
Toluene 2.0 0.20 3/18/21 21:50 BRF7.4 40.750.058 0.22
1,2,4-Trichlorobenzene ND 0.20 3/18/21 21:50 BRFV-05, V-34 ND 41.50.12 0.91
1,1,1-Trichloroethane ND 0.20 3/18/21 21:50 BRFND41.10.065 0.36
1,1,2-Trichloroethane ND 0.20 3/18/21 21:50 BRFND41.10.073 0.40
Trichloroethylene ND 0.20 3/18/21 21:50 BRFND41.10.074 0.40
Trichlorofluoromethane (Freon 11)1.5 0.80 3/18/21 21:50 BRF8.5 44.50.15 0.85
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)ND 0.80 3/18/21 21:50 BRFND46.10.15 1.2
1,2,4-Trimethylbenzene 2.0 0.20 3/18/21 21:50 BRF9.6 40.980.046 0.22
1,3,5-Trimethylbenzene 0.99 0.20 3/18/21 21:50 BRF4.9 40.980.052 0.26
Vinyl Acetate ND 4.0 3/18/21 21:50 BRFND4140.56 2.0
Vinyl Chloride ND 0.20 3/18/21 21:50 BRFND40.510.11 0.29
m&p-Xylene 5.7 0.40 3/18/21 21:50 BRF25 41.70.070 0.30
o-Xylene 2.3 0.20 3/18/21 21:50 BRF10 40.870.054 0.23
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1)93.7 3/19/21 8:0870-130
4-Bromofluorobenzene (1)98.5 3/18/21 21:5070-130
Page 5 of 26
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: 1900 Continental Blvd, Charlotte
Date Received: 3/11/2021
Work Order: 21C0636Sample Description/Location:
Field Sample #: SS-11
Sample ID: 21C0636-02
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -29
Final Vacuum(in Hg): -3.5
Receipt Vacuum(in Hg): -4.9
Sampled: 3/9/2021 12:34
Canister ID: 2235
Flow Controller ID: 4332
Sub Description/Location:
Canister Size: 1 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 10 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Acetone 160 8.0 3/18/21 22:14 BRF370 4194.8 11
Benzene ND 0.20 3/18/21 22:14 BRFND40.640.058 0.19
Benzyl chloride ND 0.20 3/18/21 22:14 BRFND41.00.090 0.47
Bromodichloromethane ND 0.20 3/18/21 22:14 BRFND41.30.056 0.37
Bromoform ND 0.20 3/18/21 22:14 BRFND42.10.069 0.71
Bromomethane ND 0.20 3/18/21 22:14 BRFND40.780.11 0.41
1,3-Butadiene ND 0.20 3/18/21 22:14 BRFND40.440.15 0.32
2-Butanone (MEK)6.8 8.0 3/18/21 22:14 BRFJ20 4240.66 2.0
Carbon Disulfide ND 2.0 3/18/21 22:14 BRFND46.20.51 1.6
Carbon Tetrachloride ND 0.20 3/18/21 22:14 BRFND41.30.053 0.33
Chlorobenzene ND 0.20 3/18/21 22:14 BRFND40.920.048 0.22
Chloroethane ND 0.20 3/18/21 22:14 BRFND40.530.20 0.52
Chloroform 1.5 0.20 3/18/21 22:14 BRF7.1 40.980.048 0.24
Chloromethane ND 0.40 3/18/21 22:14 BRFND40.830.15 0.32
Cyclohexane ND 0.20 3/18/21 22:14 BRFND40.690.098 0.34
Dibromochloromethane ND 0.20 3/18/21 22:14 BRFND41.70.067 0.57
1,2-Dibromoethane (EDB)ND 0.20 3/18/21 22:14 BRFND41.50.052 0.40
1,2-Dichlorobenzene ND 0.20 3/18/21 22:14 BRFND41.20.074 0.44
1,3-Dichlorobenzene ND 0.20 3/18/21 22:14 BRFND41.20.073 0.44
1,4-Dichlorobenzene ND 0.20 3/18/21 22:14 BRFND41.20.045 0.27
Dichlorodifluoromethane (Freon 12)ND 0.20 3/18/21 22:14 BRFND40.990.063 0.31
1,1-Dichloroethane ND 0.20 3/18/21 22:14 BRFND40.810.063 0.25
1,2-Dichloroethane ND 0.20 3/18/21 22:14 BRFND40.810.073 0.30
1,1-Dichloroethylene ND 0.20 3/18/21 22:14 BRFND40.790.11 0.43
cis-1,2-Dichloroethylene ND 0.20 3/18/21 22:14 BRFND40.790.068 0.27
trans-1,2-Dichloroethylene ND 0.20 3/18/21 22:14 BRFND40.790.059 0.23
1,2-Dichloropropane ND 0.20 3/18/21 22:14 BRFND40.920.072 0.33
cis-1,3-Dichloropropene ND 0.20 3/18/21 22:14 BRFND40.910.093 0.42
trans-1,3-Dichloropropene ND 0.20 3/18/21 22:14 BRFND40.910.067 0.30
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)ND 0.20 3/18/21 22:14 BRFND41.40.11 0.79
1,4-Dioxane 4.5 2.0 3/18/21 22:14 BRF16 47.20.56 2.0
Ethanol 430 40 3/18/21 22:39 BRF810 20751223
Ethyl Acetate ND 2.0 3/18/21 22:14 BRFND47.21.2 4.3
Ethylbenzene 1.4 0.20 3/18/21 22:14 BRF5.9 40.870.042 0.18
4-Ethyltoluene ND 0.20 3/18/21 22:14 BRFND40.980.062 0.30
Heptane ND 0.20 3/18/21 22:14 BRFND40.820.086 0.35
Hexachlorobutadiene ND 0.20 3/18/21 22:14 BRFND42.10.088 0.94
Hexane ND 8.0 3/18/21 22:14 BRFND4280.36 1.3
2-Hexanone (MBK)ND 0.40 3/18/21 22:14 BRFND41.60.11 0.46
Isopropanol 51 8.0 3/18/21 22:14 BRF130 4201.8 4.5
Methyl tert-Butyl Ether (MTBE)ND 0.20 3/18/21 22:14 BRFND40.720.080 0.29
Methylene Chloride ND 2.0 3/18/21 22:14 BRFND46.90.46 1.6
4-Methyl-2-pentanone (MIBK)ND 0.20 3/18/21 22:14 BRFND40.820.10 0.43
Naphthalene ND 0.20 3/18/21 22:14 BRFV-05 ND 41.00.11 0.59
Propene ND 8.0 3/18/21 22:14 BRFND4140.67 1.2
Styrene ND 0.20 3/18/21 22:14 BRFND40.850.057 0.24
1,1,2,2-Tetrachloroethane ND 0.20 3/18/21 22:14 BRFND41.40.053 0.37
Page 6 of 26
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: 1900 Continental Blvd, Charlotte
Date Received: 3/11/2021
Work Order: 21C0636Sample Description/Location:
Field Sample #: SS-11
Sample ID: 21C0636-02
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -29
Final Vacuum(in Hg): -3.5
Receipt Vacuum(in Hg): -4.9
Sampled: 3/9/2021 12:34
Canister ID: 2235
Flow Controller ID: 4332
Sub Description/Location:
Canister Size: 1 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 10 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Tetrachloroethylene 220 1.0 3/18/21 22:39 BRF1500 206.80.33 2.2
Tetrahydrofuran ND 2.0 3/18/21 22:14 BRFND45.90.49 1.5
Toluene 4.2 0.20 3/18/21 22:14 BRF16 40.750.058 0.22
1,2,4-Trichlorobenzene ND 0.20 3/18/21 22:14 BRFV-05, V-34 ND 41.50.12 0.91
1,1,1-Trichloroethane 1.2 0.20 3/18/21 22:14 BRF6.5 41.10.065 0.36
1,1,2-Trichloroethane ND 0.20 3/18/21 22:14 BRFND41.10.073 0.40
Trichloroethylene 0.83 0.20 3/18/21 22:14 BRF4.4 41.10.074 0.40
Trichlorofluoromethane (Freon 11)2.3 0.80 3/18/21 22:14 BRF13 44.50.15 0.85
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)ND 0.80 3/18/21 22:14 BRFND46.10.15 1.2
1,2,4-Trimethylbenzene 0.84 0.20 3/18/21 22:14 BRF4.1 40.980.046 0.22
1,3,5-Trimethylbenzene 0.20 0.20 3/18/21 22:14 BRF1.0 40.980.052 0.26
Vinyl Acetate ND 4.0 3/18/21 22:14 BRFND4140.56 2.0
Vinyl Chloride ND 0.20 3/18/21 22:14 BRFND40.510.11 0.29
m&p-Xylene 4.1 0.40 3/18/21 22:14 BRF18 41.70.070 0.30
o-Xylene 1.4 0.20 3/18/21 22:14 BRF5.9 40.870.054 0.23
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1)94.6 3/18/21 22:3970-130
4-Bromofluorobenzene (1)98.5 3/18/21 22:1470-130
Page 7 of 26
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: 1900 Continental Blvd, Charlotte
Date Received: 3/11/2021
Work Order: 21C0636Sample Description/Location:
Field Sample #: SS-12
Sample ID: 21C0636-03
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -28.5
Final Vacuum(in Hg): -3.5
Receipt Vacuum(in Hg): -4.6
Sampled: 3/9/2021 11:50
Canister ID: 2256
Flow Controller ID: 4333
Sub Description/Location:
Canister Size: 1 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 10 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Acetone 350 40 3/19/21 8:32 BRF820 20952457
Benzene 0.70 0.20 3/18/21 23:04 BRF2.2 40.640.058 0.19
Benzyl chloride ND 0.20 3/18/21 23:04 BRFND41.00.090 0.47
Bromodichloromethane ND 0.20 3/18/21 23:04 BRFND41.30.056 0.37
Bromoform ND 0.20 3/18/21 23:04 BRFND42.10.069 0.71
Bromomethane ND 0.20 3/18/21 23:04 BRFND40.780.11 0.41
1,3-Butadiene ND 0.20 3/18/21 23:04 BRFND40.440.15 0.32
2-Butanone (MEK)15 8.0 3/18/21 23:04 BRF45 4240.66 2.0
Carbon Disulfide ND 2.0 3/18/21 23:04 BRFND46.20.51 1.6
Carbon Tetrachloride ND 0.20 3/18/21 23:04 BRFND41.30.053 0.33
Chlorobenzene ND 0.20 3/18/21 23:04 BRFND40.920.048 0.22
Chloroethane ND 0.20 3/18/21 23:04 BRFND40.530.20 0.52
Chloroform 0.85 0.20 3/18/21 23:04 BRF4.2 40.980.048 0.24
Chloromethane ND 0.40 3/18/21 23:04 BRFND40.830.15 0.32
Cyclohexane ND 0.20 3/18/21 23:04 BRFND40.690.098 0.34
Dibromochloromethane ND 0.20 3/18/21 23:04 BRFND41.70.067 0.57
1,2-Dibromoethane (EDB)ND 0.20 3/18/21 23:04 BRFND41.50.052 0.40
1,2-Dichlorobenzene ND 0.20 3/18/21 23:04 BRFND41.20.074 0.44
1,3-Dichlorobenzene ND 0.20 3/18/21 23:04 BRFND41.20.073 0.44
1,4-Dichlorobenzene ND 0.20 3/18/21 23:04 BRFND41.20.045 0.27
Dichlorodifluoromethane (Freon 12)ND 0.20 3/18/21 23:04 BRFND40.990.063 0.31
1,1-Dichloroethane ND 0.20 3/18/21 23:04 BRFND40.810.063 0.25
1,2-Dichloroethane ND 0.20 3/18/21 23:04 BRFND40.810.073 0.30
1,1-Dichloroethylene ND 0.20 3/18/21 23:04 BRFND40.790.11 0.43
cis-1,2-Dichloroethylene 1.8 0.20 3/18/21 23:04 BRF6.9 40.790.068 0.27
trans-1,2-Dichloroethylene ND 0.20 3/18/21 23:04 BRFND40.790.059 0.23
1,2-Dichloropropane ND 0.20 3/18/21 23:04 BRFND40.920.072 0.33
cis-1,3-Dichloropropene ND 0.20 3/18/21 23:04 BRFND40.910.093 0.42
trans-1,3-Dichloropropene ND 0.20 3/18/21 23:04 BRFND40.910.067 0.30
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)ND 0.20 3/18/21 23:04 BRFND41.40.11 0.79
1,4-Dioxane 4.0 2.0 3/18/21 23:04 BRF14 47.20.56 2.0
Ethanol 630 40 3/19/21 8:32 BRF1200 20751223
Ethyl Acetate ND 2.0 3/18/21 23:04 BRFND47.21.2 4.3
Ethylbenzene 0.93 0.20 3/18/21 23:04 BRF4.0 40.870.042 0.18
4-Ethyltoluene ND 0.20 3/18/21 23:04 BRFND40.980.062 0.30
Heptane ND 0.20 3/18/21 23:04 BRFND40.820.086 0.35
Hexachlorobutadiene ND 0.20 3/18/21 23:04 BRFND42.10.088 0.94
Hexane ND 8.0 3/18/21 23:04 BRFND4280.36 1.3
2-Hexanone (MBK)ND 0.40 3/18/21 23:04 BRFND41.60.11 0.46
Isopropanol 30 8.0 3/18/21 23:04 BRF74 4201.8 4.5
Methyl tert-Butyl Ether (MTBE)ND 0.20 3/18/21 23:04 BRFND40.720.080 0.29
Methylene Chloride ND 2.0 3/18/21 23:04 BRFND46.90.46 1.6
4-Methyl-2-pentanone (MIBK)ND 0.20 3/18/21 23:04 BRFND40.820.10 0.43
Naphthalene 2.2 0.20 3/18/21 23:04 BRFV-05 11 41.00.11 0.59
Propene ND 8.0 3/18/21 23:04 BRFND4140.67 1.2
Styrene ND 0.20 3/18/21 23:04 BRFND40.850.057 0.24
1,1,2,2-Tetrachloroethane ND 0.20 3/18/21 23:04 BRFND41.40.053 0.37
Page 8 of 26
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: 1900 Continental Blvd, Charlotte
Date Received: 3/11/2021
Work Order: 21C0636Sample Description/Location:
Field Sample #: SS-12
Sample ID: 21C0636-03
Sample Matrix: Sub Slab
Initial Vacuum(in Hg): -28.5
Final Vacuum(in Hg): -3.5
Receipt Vacuum(in Hg): -4.6
Sampled: 3/9/2021 11:50
Canister ID: 2256
Flow Controller ID: 4333
Sub Description/Location:
Canister Size: 1 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 10 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Tetrachloroethylene 35 0.20 3/18/21 23:04 BRF240 41.40.065 0.44
Tetrahydrofuran ND 2.0 3/18/21 23:04 BRFND45.90.49 1.5
Toluene 2.2 0.20 3/18/21 23:04 BRF8.2 40.750.058 0.22
1,2,4-Trichlorobenzene ND 0.20 3/18/21 23:04 BRFV-05, V-34 ND 41.50.12 0.91
1,1,1-Trichloroethane 1.4 0.20 3/18/21 23:04 BRF7.4 41.10.065 0.36
1,1,2-Trichloroethane ND 0.20 3/18/21 23:04 BRFND41.10.073 0.40
Trichloroethylene 13 0.20 3/18/21 23:04 BRF69 41.10.074 0.40
Trichlorofluoromethane (Freon 11)0.70 0.80 3/18/21 23:04 BRFJ3.9 44.50.15 0.85
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)ND 0.80 3/18/21 23:04 BRFND46.10.15 1.2
1,2,4-Trimethylbenzene 1.3 0.20 3/18/21 23:04 BRF6.4 40.980.046 0.22
1,3,5-Trimethylbenzene 0.35 0.20 3/18/21 23:04 BRF1.7 40.980.052 0.26
Vinyl Acetate ND 4.0 3/18/21 23:04 BRFND4140.56 2.0
Vinyl Chloride ND 0.20 3/18/21 23:04 BRFND40.510.11 0.29
m&p-Xylene 2.7 0.40 3/18/21 23:04 BRF12 41.70.070 0.30
o-Xylene 1.1 0.20 3/18/21 23:04 BRF4.7 40.870.054 0.23
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1)94.9 3/19/21 8:3270-130
4-Bromofluorobenzene (1)99.4 3/18/21 23:0470-130
Page 9 of 26
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: 1900 Continental Blvd, Charlotte
Date Received: 3/11/2021
Work Order: 21C0636Sample Description/Location:
Field Sample #: SS-Dup
Sample ID: 21C0636-04
Sample Matrix: Sub Slab
Initial Vacuum(in Hg):
Final Vacuum(in Hg):
Receipt Vacuum(in Hg): -6.6
Sampled: 3/9/2021 00:00
Canister ID: 2303
Flow Controller ID: 4038
Sub Description/Location:
Canister Size: 1 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 10 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Acetone 33 8.0 3/18/21 23:55 BRF78 4194.8 11
Benzene ND 0.20 3/18/21 23:55 BRFND40.640.058 0.19
Benzyl chloride ND 0.20 3/18/21 23:55 BRFND41.00.090 0.47
Bromodichloromethane ND 0.20 3/18/21 23:55 BRFND41.30.056 0.37
Bromoform ND 0.20 3/18/21 23:55 BRFND42.10.069 0.71
Bromomethane ND 0.20 3/18/21 23:55 BRFND40.780.11 0.41
1,3-Butadiene ND 0.20 3/18/21 23:55 BRFND40.440.15 0.32
2-Butanone (MEK)2.3 8.0 3/18/21 23:55 BRFJ6.8 4240.66 2.0
Carbon Disulfide ND 2.0 3/18/21 23:55 BRFND46.20.51 1.6
Carbon Tetrachloride ND 0.20 3/18/21 23:55 BRFND41.30.053 0.33
Chlorobenzene ND 0.20 3/18/21 23:55 BRFND40.920.048 0.22
Chloroethane ND 0.20 3/18/21 23:55 BRFND40.530.20 0.52
Chloroform 1.0 0.20 3/18/21 23:55 BRF5.1 40.980.048 0.24
Chloromethane ND 0.40 3/18/21 23:55 BRFND40.830.15 0.32
Cyclohexane ND 0.20 3/18/21 23:55 BRFND40.690.098 0.34
Dibromochloromethane ND 0.20 3/18/21 23:55 BRFND41.70.067 0.57
1,2-Dibromoethane (EDB)ND 0.20 3/18/21 23:55 BRFND41.50.052 0.40
1,2-Dichlorobenzene ND 0.20 3/18/21 23:55 BRFND41.20.074 0.44
1,3-Dichlorobenzene ND 0.20 3/18/21 23:55 BRFND41.20.073 0.44
1,4-Dichlorobenzene ND 0.20 3/18/21 23:55 BRFND41.20.045 0.27
Dichlorodifluoromethane (Freon 12)ND 0.20 3/18/21 23:55 BRFND40.990.063 0.31
1,1-Dichloroethane ND 0.20 3/18/21 23:55 BRFND40.810.063 0.25
1,2-Dichloroethane ND 0.20 3/18/21 23:55 BRFND40.810.073 0.30
1,1-Dichloroethylene ND 0.20 3/18/21 23:55 BRFND40.790.11 0.43
cis-1,2-Dichloroethylene ND 0.20 3/18/21 23:55 BRFND40.790.068 0.27
trans-1,2-Dichloroethylene ND 0.20 3/18/21 23:55 BRFND40.790.059 0.23
1,2-Dichloropropane ND 0.20 3/18/21 23:55 BRFND40.920.072 0.33
cis-1,3-Dichloropropene ND 0.20 3/18/21 23:55 BRFND40.910.093 0.42
trans-1,3-Dichloropropene ND 0.20 3/18/21 23:55 BRFND40.910.067 0.30
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)ND 0.20 3/18/21 23:55 BRFND41.40.11 0.79
1,4-Dioxane ND 2.0 3/18/21 23:55 BRFND47.20.56 2.0
Ethanol 230 20 3/19/21 8:58 BRF430 10386.1 11
Ethyl Acetate ND 2.0 3/18/21 23:55 BRFND47.21.2 4.3
Ethylbenzene 1.3 0.20 3/18/21 23:55 BRF5.5 40.870.042 0.18
4-Ethyltoluene ND 0.20 3/18/21 23:55 BRFND40.980.062 0.30
Heptane ND 0.20 3/18/21 23:55 BRFND40.820.086 0.35
Hexachlorobutadiene ND 0.20 3/18/21 23:55 BRFND42.10.088 0.94
Hexane 1.4 8.0 3/18/21 23:55 BRFJ5.0 4280.36 1.3
2-Hexanone (MBK)ND 0.40 3/18/21 23:55 BRFND41.60.11 0.46
Isopropanol 16 8.0 3/18/21 23:55 BRF40 4201.8 4.5
Methyl tert-Butyl Ether (MTBE)ND 0.20 3/18/21 23:55 BRFND40.720.080 0.29
Methylene Chloride ND 2.0 3/18/21 23:55 BRFND46.90.46 1.6
4-Methyl-2-pentanone (MIBK)ND 0.20 3/18/21 23:55 BRFND40.820.10 0.43
Naphthalene ND 0.20 3/18/21 23:55 BRFV-05 ND 41.00.11 0.59
Propene ND 8.0 3/18/21 23:55 BRFND4140.67 1.2
Styrene ND 0.20 3/18/21 23:55 BRFND40.850.057 0.24
1,1,2,2-Tetrachloroethane ND 0.20 3/18/21 23:55 BRFND41.40.053 0.37
Page 10 of 26
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYTICAL RESULTS
Project Location: 1900 Continental Blvd, Charlotte
Date Received: 3/11/2021
Work Order: 21C0636Sample Description/Location:
Field Sample #: SS-Dup
Sample ID: 21C0636-04
Sample Matrix: Sub Slab
Initial Vacuum(in Hg):
Final Vacuum(in Hg):
Receipt Vacuum(in Hg): -6.6
Sampled: 3/9/2021 00:00
Canister ID: 2303
Flow Controller ID: 4038
Sub Description/Location:
Canister Size: 1 liter
Flow Controller Type: Fixed-Orifice
Flow Controller Calibration
RPD Pre and Post-Sampling:
Sample Type: 10 min
RLResults AnalystAnalyzedDilutionFlag/QualRLResultsAnalyte
Date/Time
EPA TO-15
ppbv ug/m3
MDL MDL
Tetrachloroethylene 8.1 0.20 3/18/21 23:55 BRF55 41.40.065 0.44
Tetrahydrofuran ND 2.0 3/18/21 23:55 BRFND45.90.49 1.5
Toluene 2.1 0.20 3/18/21 23:55 BRF7.8 40.750.058 0.22
1,2,4-Trichlorobenzene ND 0.20 3/18/21 23:55 BRFV-05, V-34 ND 41.50.12 0.91
1,1,1-Trichloroethane ND 0.20 3/18/21 23:55 BRFND41.10.065 0.36
1,1,2-Trichloroethane ND 0.20 3/18/21 23:55 BRFND41.10.073 0.40
Trichloroethylene ND 0.20 3/18/21 23:55 BRFND41.10.074 0.40
Trichlorofluoromethane (Freon 11)1.7 0.80 3/18/21 23:55 BRF9.4 44.50.15 0.85
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)ND 0.80 3/18/21 23:55 BRFND46.10.15 1.2
1,2,4-Trimethylbenzene 2.2 0.20 3/18/21 23:55 BRF11 40.980.046 0.22
1,3,5-Trimethylbenzene 1.2 0.20 3/18/21 23:55 BRF5.7 40.980.052 0.26
Vinyl Acetate ND 4.0 3/18/21 23:55 BRFND4140.56 2.0
Vinyl Chloride ND 0.20 3/18/21 23:55 BRFND40.510.11 0.29
m&p-Xylene 6.5 0.40 3/18/21 23:55 BRF28 41.70.070 0.30
o-Xylene 2.6 0.20 3/18/21 23:55 BRF11 40.870.054 0.23
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1)94.5 3/19/21 8:5870-130
4-Bromofluorobenzene (1)97.8 3/18/21 23:5570-130
Page 11 of 26
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
21C0636-01 [SS-10]B278375 1.5 1 N/A 1000 200 75 03/18/21
21C0636-01RE1 [SS-10]B278375 1.5 1 N/A 1000 200 30 03/18/21
21C0636-02 [SS-11]B278375 1.5 1 N/A 1000 200 75 03/18/21
21C0636-02RE1 [SS-11]B278375 1.5 1 N/A 1000 200 15 03/18/21
21C0636-03 [SS-12]B278375 1.5 1 N/A 1000 200 75 03/18/21
21C0636-03RE1 [SS-12]B278375 1.5 1 N/A 1000 200 15 03/18/21
21C0636-04 [SS-Dup]B278375 1.5 1 N/A 1000 200 75 03/18/21
21C0636-04RE1 [SS-Dup]B278375 1.5 1 N/A 1000 200 30 03/18/21
Page 12 of 26
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 B278375 - TO-15 Prep
Blank (B278375-BLK1)Prepared & Analyzed: 03/18/21
0.80NDAcetone
0.020NDBenzene
0.020NDBenzyl chloride
0.020NDBromodichloromethane
0.020NDBromoform
0.020NDBromomethane
0.020ND1,3-Butadiene
0.80ND2-Butanone (MEK)
0.20NDCarbon Disulfide
0.020NDCarbon Tetrachloride
0.020NDChlorobenzene
0.020NDChloroethane
0.020NDChloroform
0.040NDChloromethane
0.020NDCyclohexane
0.020NDDibromochloromethane
0.020ND1,2-Dibromoethane (EDB)
0.020ND1,2-Dichlorobenzene
0.020ND1,3-Dichlorobenzene
0.020ND1,4-Dichlorobenzene
0.020NDDichlorodifluoromethane (Freon 12)
0.020ND1,1-Dichloroethane
0.020ND1,2-Dichloroethane
0.020ND1,1-Dichloroethylene
0.020NDcis-1,2-Dichloroethylene
0.020NDtrans-1,2-Dichloroethylene
0.020ND1,2-Dichloropropane
0.020NDcis-1,3-Dichloropropene
0.020NDtrans-1,3-Dichloropropene
0.020ND1,2-Dichloro-1,1,2,2-tetrafluoroethane
(Freon 114)
0.20ND1,4-Dioxane
0.80NDEthanol
0.20NDEthyl Acetate
0.020NDEthylbenzene
0.020ND4-Ethyltoluene
0.020NDHeptane
0.020NDHexachlorobutadiene
0.80NDHexane
0.020ND2-Hexanone (MBK)
0.80NDIsopropanol
0.020NDMethyl tert-Butyl Ether (MTBE)
0.20NDMethylene Chloride
0.020ND4-Methyl-2-pentanone (MIBK)
0.020 V-05NDNaphthalene
0.80NDPropene
0.020NDStyrene
Page 13 of 26
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 B278375 - TO-15 Prep
Blank (B278375-BLK1)Prepared & Analyzed: 03/18/21
0.020ND1,1,2,2-Tetrachloroethane
0.020NDTetrachloroethylene
0.20NDTetrahydrofuran
0.020NDToluene
0.020 V-05,
V-34
ND1,2,4-Trichlorobenzene
0.020ND1,1,1-Trichloroethane
0.020ND1,1,2-Trichloroethane
0.020NDTrichloroethylene
0.080NDTrichlorofluoromethane (Freon 11)
0.080ND1,1,2-Trichloro-1,2,2-trifluoroethane (Freon
113)
0.020ND1,2,4-Trimethylbenzene
0.020ND1,3,5-Trimethylbenzene
0.40NDVinyl Acetate
0.020NDVinyl Chloride
0.040NDm&p-Xylene
0.020NDo-Xylene
8.00 70-130Surrogate: 4-Bromofluorobenzene (1)97.17.77
LCS (B278375-BS1)Prepared & Analyzed: 03/18/21
5.00 70-1301045.20Acetone
5.00 70-13096.54.82Benzene
5.00 70-13083.64.18Benzyl chloride
5.00 70-1301105.51Bromodichloromethane
5.00 70-1301035.14Bromoform
5.00 70-13073.73.69Bromomethane
5.00 70-13078.83.941,3-Butadiene
5.00 70-13091.94.602-Butanone (MEK)
5.00 70-13074.73.73Carbon Disulfide
5.00 70-13099.84.99Carbon Tetrachloride
5.00 70-13092.74.63Chlorobenzene
5.00 70-13082.04.10Chloroethane
5.00 70-13079.23.96Chloroform
5.00 70-13088.04.40Chloromethane
5.00 70-13094.94.75Cyclohexane
5.00 70-13096.64.83Dibromochloromethane
5.00 70-1301015.041,2-Dibromoethane (EDB)
5.00 70-1301035.131,2-Dichlorobenzene
5.00 70-1301045.191,3-Dichlorobenzene
5.00 70-1301005.001,4-Dichlorobenzene
5.00 70-13080.74.04Dichlorodifluoromethane (Freon 12)
5.00 70-13083.44.171,1-Dichloroethane
5.00 70-13090.44.521,2-Dichloroethane
5.00 70-13088.64.431,1-Dichloroethylene
5.00 70-13084.04.20cis-1,2-Dichloroethylene
5.00 70-13083.64.18trans-1,2-Dichloroethylene
Page 14 of 26
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 B278375 - TO-15 Prep
LCS (B278375-BS1)Prepared & Analyzed: 03/18/21
5.00 70-1301025.091,2-Dichloropropane
5.00 70-13098.74.93cis-1,3-Dichloropropene
5.00 70-1301015.04trans-1,3-Dichloropropene
5.00 70-13073.83.691,2-Dichloro-1,1,2,2-tetrafluoroethane
(Freon 114)
5.00 70-1301015.051,4-Dioxane
5.00 70-13090.74.54Ethanol
5.00 70-13082.44.12Ethyl Acetate
5.00 70-13097.14.85Ethylbenzene
5.00 70-13097.14.854-Ethyltoluene
5.00 70-1301075.35Heptane
5.00 70-13091.84.59Hexachlorobutadiene
5.00 70-1301045.20Hexane
5.00 V-06, L-0570-1301376.872-Hexanone (MBK)*
5.00 70-13098.94.94Isopropanol
5.00 70-13072.93.65Methyl tert-Butyl Ether (MTBE)
5.00 70-1301005.02Methylene Chloride
5.00 70-1301125.624-Methyl-2-pentanone (MIBK)
5.00 V-0570-13070.83.54Naphthalene
5.00 70-13087.84.39Propene
5.00 70-13092.74.64Styrene
5.00 70-1301055.261,1,2,2-Tetrachloroethane
5.00 70-13095.24.76Tetrachloroethylene
5.00 70-13098.44.92Tetrahydrofuran
5.00 70-13095.34.77Toluene
5.00 V-05,
V-34
70-13080.84.041,2,4-Trichlorobenzene
5.00 70-13096.94.841,1,1-Trichloroethane
5.00 70-13097.54.881,1,2-Trichloroethane
5.00 70-1301025.08Trichloroethylene
5.00 70-13081.74.09Trichlorofluoromethane (Freon 11)
5.00 70-13073.83.691,1,2-Trichloro-1,2,2-trifluoroethane (Freon
113)
5.00 70-13099.34.971,2,4-Trimethylbenzene
5.00 70-13096.84.841,3,5-Trimethylbenzene
5.00 70-13086.84.34Vinyl Acetate
5.00 70-13082.44.12Vinyl Chloride
10.0 70-13010410.4m&p-Xylene
5.00 70-1301005.00o-Xylene
8.00 70-130Surrogate: 4-Bromofluorobenzene (1)1028.16
Page 15 of 26
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
Microgramµg
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
Laboratory fortified blank/laboratory control sample recovery is outside of control limits. Reported value for this
compound is likely to be biased on the high side.
L-05
Continuing calibration verification (CCV) did not meet method specifications and was biased on the low side for
this compound.
V-05
Continuing calibration verification (CCV) did not meet method specifications and was biased on the high side for
this compound.
V-06
Initial calibration verification (ICV) did not meet method specifications and was biased on the low side for this
compound. Reported result is estimated.
V-34
Page 16 of 26
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
ANALYST
Thomas P. HniteckiTPH
Raisa A. PetraitisRAP
PDF Management StationSTATION
Kerry K. McGeeKKM
Brittany R. FiskBRF
Page 17 of 26
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 (S052381-ICV1 )Lab File ID: J2025821.D Analyzed: 09/14/20 23:22
Bromochloromethane (1)159501 2.873 155833 2.873 60 - 140102 0.0000 +/-0.50
1,4-Difluorobenzene (1)756714 3.475 745760 3.475 60 - 140101 0.0000 +/-0.50
Chlorobenzene-d5 (1)686740 5.06 671608 5.057 60 - 140102 0.0030 +/-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 (S057919-CCV1 )Lab File ID: J2107704.D Analyzed: 03/18/21 13:04
Bromochloromethane (1)151406 2.873 155833 2.873 60 - 14097 0.0000 +/-0.50
1,4-Difluorobenzene (1)546633 3.478 745760 3.475 60 - 14073 0.0030 +/-0.50
Chlorobenzene-d5 (1)488699 5.056 671608 5.057 60 - 14073 -0.0010 +/-0.50
LCS (B278375-BS1 )Lab File ID: J2107705.D Analyzed: 03/18/21 13:29
Bromochloromethane (1)152112 2.873 151406 2.873 60 - 140100 0.0000 +/-0.50
1,4-Difluorobenzene (1)544843 3.475 546633 3.478 60 - 140100 -0.0030 +/-0.50
Chlorobenzene-d5 (1)482666 5.057 488699 5.056 60 - 14099 0.0010 +/-0.50
Blank (B278375-BLK1 )Lab File ID: J2107707.D Analyzed: 03/18/21 14:25
Bromochloromethane (1)155439 2.86 151406 2.873 60 - 140103 -0.0130 +/-0.50
1,4-Difluorobenzene (1)523875 3.468 546633 3.478 60 - 14096 -0.0100 +/-0.50
Chlorobenzene-d5 (1)458830 5.054 488699 5.056 60 - 14094 -0.0020 +/-0.50
SS-10 (21C0636-01 )Lab File ID: J2107724.D Analyzed: 03/18/21 21:50
Bromochloromethane (1)155673 2.87 151406 2.873 60 - 140103 -0.0030 +/-0.50
1,4-Difluorobenzene (1)534724 3.475 546633 3.478 60 - 14098 -0.0030 +/-0.50
Chlorobenzene-d5 (1)481269 5.057 488699 5.056 60 - 14098 0.0010 +/-0.50
SS-11 (21C0636-02 )Lab File ID: J2107725.D Analyzed: 03/18/21 22:14
Bromochloromethane (1)154473 2.863 151406 2.873 60 - 140102 -0.0100 +/-0.50
1,4-Difluorobenzene (1)542941 3.471 546633 3.478 60 - 14099 -0.0070 +/-0.50
Chlorobenzene-d5 (1)476620 5.056 488699 5.056 60 - 14098 0.0000 +/-0.50
SS-11 (21C0636-02RE1 )Lab File ID: J2107726.D Analyzed: 03/18/21 22:39
Bromochloromethane (1)157442 2.866 151406 2.873 60 - 140104 -0.0070 +/-0.50
1,4-Difluorobenzene (1)538060 3.472 546633 3.478 60 - 14098 -0.0060 +/-0.50
Chlorobenzene-d5 (1)472988 5.057 488699 5.056 60 - 14097 0.0010 +/-0.50
SS-12 (21C0636-03 )Lab File ID: J2107727.D Analyzed: 03/18/21 23:04
Bromochloromethane (1)159826 2.866 151406 2.873 60 - 140106 -0.0070 +/-0.50
1,4-Difluorobenzene (1)547660 3.472 546633 3.478 60 - 140100 -0.0060 +/-0.50
Chlorobenzene-d5 (1)480287 5.057 488699 5.056 60 - 14098 0.0010 +/-0.50
Page 18 of 26
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
SS-Dup (21C0636-04 )Lab File ID: J2107729.D Analyzed: 03/18/21 23:55
Bromochloromethane (1)154209 2.869 151406 2.873 60 - 140102 -0.0040 +/-0.50
1,4-Difluorobenzene (1)545484 3.474 546633 3.478 60 - 140100 -0.0040 +/-0.50
Chlorobenzene-d5 (1)486915 5.056 488699 5.056 60 - 140100 0.0000 +/-0.50
SS-10 (21C0636-01RE1 )Lab File ID: J2107734.D Analyzed: 03/19/21 08:08
Bromochloromethane (1)154914 2.863 151406 2.873 60 - 140102 -0.0100 +/-0.50
1,4-Difluorobenzene (1)535436 3.472 546633 3.478 60 - 14098 -0.0060 +/-0.50
Chlorobenzene-d5 (1)471388 5.054 488699 5.056 60 - 14096 -0.0020 +/-0.50
SS-12 (21C0636-03RE1 )Lab File ID: J2107735.D Analyzed: 03/19/21 08:32
Bromochloromethane (1)159713 2.863 151406 2.873 60 - 140105 -0.0100 +/-0.50
1,4-Difluorobenzene (1)536782 3.469 546633 3.478 60 - 14098 -0.0090 +/-0.50
Chlorobenzene-d5 (1)463103 5.054 488699 5.056 60 - 14095 -0.0020 +/-0.50
SS-Dup (21C0636-04RE1 )Lab File ID: J2107736.D Analyzed: 03/19/21 08:58
Bromochloromethane (1)155699 2.863 151406 2.873 60 - 140103 -0.0100 +/-0.50
1,4-Difluorobenzene (1)531251 3.468 546633 3.478 60 - 14097 -0.0100 +/-0.50
Chlorobenzene-d5 (1)465137 5.054 488699 5.056 60 - 14095 -0.0020 +/-0.50
Page 19 of 26
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
CONTINUING CALIBRATION CHECK
EPA TO-15
S057919-CCV1
COMPOUND TYPE CCV MIN (#)CCV LIMIT (#)CCV ICAL
CONC. (ppbv)% DIFF / DRIFTRESPONSE FACTOR
STD
0.9338917A 2.6 305.13 0.91031545.00Acetone
0.6441294A -2.5 304.88 0.66060255.00Benzene
0.5038684A -15.5 304.22 0.59657625.00Benzyl chloride
0.5048155A 11.2 305.56 0.45379535.00Bromodichloromethane
0.7063718A 7.0 305.35 0.66009985.00Bromoform
0.73912A -26.2 303.69 1.0011775.00Bromomethane
0.5013698A -19.7 304.01 0.62469025.001,3-Butadiene
1.230789A -5.9 304.71 1.307495.002-Butanone (MEK)
1.805466A -26.8 303.66 2.4664695.00Carbon Disulfide
0.5191578A 2.5 305.12 0.50647525.00Carbon Tetrachloride
0.729889A -5.8 304.71 0.77512965.00Chlorobenzene
0.3926185A -21.5 303.92 0.50014425.00Chloroethane
1.600687A -20.7 303.96 2.0187795.00Chloroform
0.5561946A -9.4 304.53 0.61414915.00Chloromethane
0.2725778A -4.3 304.78 0.28493445.00Cyclohexane
0.6289516A -2.2 304.89 0.64296155.00Dibromochloromethane
0.4931297A 1.9 305.09 0.48410195.001,2-Dibromoethane (EDB)
0.6793351A -0.8 304.96 0.68463135.001,2-Dichlorobenzene
0.7490058A 3.8 305.19 0.72159925.001,3-Dichlorobenzene
0.7072591A -0.9 304.96 0.71348965.001,4-Dichlorobenzene
1.990473A -20.6 303.97 2.5070915.00Dichlorodifluoromethane (Freon 12)
1.267775A -18.0 304.10 1.5453035.001,1-Dichloroethane
0.9612406A -9.2 304.54 1.0588055.001,2-Dichloroethane
1.069083A -7.9 304.61 1.1602875.001,1-Dichloroethylene
0.9357516A -16.0 304.20 1.1142685.00cis-1,2-Dichloroethylene
1.016763A -15.4 304.23 1.2019085.00trans-1,2-Dichloroethylene
0.2336778A 4.7 305.24 0.22311345.001,2-Dichloropropane
0.3783423A 4.3 305.21 0.36288985.00cis-1,3-Dichloropropene
0.3173552A 3.9 305.19 0.30554635.00trans-1,3-Dichloropropene
2.04273A -22.9 303.85 2.6500555.001,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)
0.1381783A -0.9 304.96 0.1393875.001,4-Dioxane
0.1471857A -13.5 304.32 0.17021655.00Ethanol
0.2101793A -7.8 304.61 0.22801885.00Ethyl Acetate
1.12766A -2.9 304.86 1.1613955.00Ethylbenzene
1.255726A -0.6 304.97 1.2628175.004-Ethyltoluene
0.1876828A 11.2 305.56 0.16884545.00Heptane
0.5837245A -15.6 304.22 0.69182945.00Hexachlorobutadiene
0.6579079L 1.4 305.07 0.65316035.00Hexane
Page 20 of 26
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
CONTINUING CALIBRATION CHECK
EPA TO-15
S057919-CCV1
COMPOUND TYPE CCV MIN (#)CCV LIMIT (#)CCV ICAL
CONC. (ppbv)% DIFF / DRIFTRESPONSE FACTOR
STD
0.3669498A 31.0 *306.55 0.2800655.002-Hexanone (MBK)
1.090937A 8.9 305.44 1.0019815.00Isopropanol
1.868639A -25.6 303.72 2.5125355.00Methyl tert-Butyl Ether (MTBE)
0.668243A 0.9 305.05 0.66218265.00Methylene Chloride
0.1678055A 9.6 305.48 0.15311145.004-Methyl-2-pentanone (MIBK)
0.6900902A -36.5 *303.17 1.0869325.00Naphthalene
0.428876A -7.6 304.62 0.46417495.00Propene
0.6754522A -4.3 304.79 0.70564885.00Styrene
0.6691006A 4.8 305.24 0.6385835.001,1,2,2-Tetrachloroethane
0.5392866A -2.8 304.86 0.55467945.00Tetrachloroethylene
0.6513243A -8.8 304.56 0.71430445.00Tetrahydrofuran
0.8618802A -7.8 304.61 0.93450115.00Toluene
0.2932292A -31.2 *303.44 0.42602845.001,2,4-Trichlorobenzene
0.4647828A 3.4 305.17 0.44961335.001,1,1-Trichloroethane
0.3208683A -2.2 304.89 0.32813735.001,1,2-Trichloroethane
0.305852A 2.7 305.13 0.29794695.00Trichloroethylene
2.044368A -19.4 304.03 2.5368415.00Trichlorofluoromethane (Freon 11)
1.491333A -23.8 303.81 1.9577355.001,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
1.019252A -0.7 304.96 1.0267445.001,2,4-Trimethylbenzene
1.083052A 0.2 305.01 1.0809785.001,3,5-Trimethylbenzene
1.165735A -16.8 304.16 1.4009655.00Vinyl Acetate
0.7111158A -16.9 304.16 0.85546345.00Vinyl Chloride
0.9654777A 5.1 3010.5 0.918504310.0m&p-Xylene
0.9058402A 0.7 305.03 0.8997865.00o-Xylene
* Values outside of QC limits
# Column to be used to flag Response Factor and %Diff/Drift values with an asterisk
Page 21 of 26
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 22 of 26
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 - ISO17025:2017AIHA 03/1/2022
M-MA100Massachusetts DEPMA 06/30/2021
PH-0165Connecticut Department of Publilc HealthCT 12/31/2022
10899 NELAPNew York State Department of HealthNY 04/1/2021
2516 NELAPNew Hampshire Environmental LabNH-S 02/5/2022
LAO00112Rhode Island Department of HealthRI 12/30/2021
652North Carolina Div. of Water QualityNC 12/31/2021
MA007 NELAPNew Jersey DEPNJ 06/30/2021
E871027 NELAPFlorida Department of HealthFL 06/30/2021
LL720741Vermont Department of Health Lead LaboratoryVT 07/30/2021
MA00100State of MaineME 06/9/2021
460217Commonwealth of VirginiaVA 12/14/2021
2557 NELAPNew Hampshire Environmental LabNH-P 09/6/2021
VT-255716Vermont Department of Health Drinking WaterVT-DW 06/12/2021
25703North Carolina Department of HealthNC-DW 07/31/2021
68-05812Commonwealth of Pennsylvania DEPPA 06/30/2021
9100Dept. of Env, Great Lakes, and EnergyMI 09/6/2021
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Page 26 of 26

Appendix C DEQ Risk Calculator (January 2021)
Version Date:
Basis:
Site Name:
Site Address:
DEQ Section:
Site ID:
Exposure Unit ID:
Submittal Date:
Reviewed By:
Worst Case Scenario
North Carolina Department of Environmental Quality
Risk Calculator
REEP-LRC II
1900&1942 Continental Boulevard Charlotte, Mecklenburg County
Brownfields Program
24001-20-060
January 2021
November 2020 EPA RSL Table
Prepared By:Hart & Hickman, PC
3921 Sunset Ridge Road, Suite 301, Raleigh, North Carolina
North Carolina DEQ Risk Calculator
Complete Exposure Pathways
Version Date: January 2021
Basis: November 2020 EPA RSL Table
Site ID: 24001-20-060
Exposure Unit ID: Worst Case Scenario
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: January 2021Basis: November 2020 EPA RSL TableSite ID: 24001-20-060
Exposure Unit ID: Worst Case Scenario
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
820 67-64-1 Acetone ug/m3
4.5 71-43-2 Benzene ug/m3
8.4 75-15-0 Carbon Disulfide ug/m3
7.1 67-66-3 Chloroform ug/m3
2.9 75-71-8 Dichlorodifluoromethane ug/m3
2200 75-34-3 Dichloroethane, 1,1-ug/m3
2200 75-35-4 Dichloroethylene, 1,1-ug/m3
20 156-59-2 Dichloroethylene, cis-1,2-ug/m3
0.76 156-60-5 Dichloroethylene, trans-1,2-ug/m3
25 123-91-1 Dioxane, 1,4-ug/m3
2.9 141-78-6 Ethyl Acetate ug/m3
30 100-41-4 Ethylbenzene ug/m3
2.5 109-99-9 ~Tetrahydrofuran ug/m3
5.5 142-82-5 Heptane, N-ug/m3
5 110-54-3 Hexane, N-ug/m3
5.4 591-78-6 Hexanone, 2-ug/m3
140 67-63-0 Isopropanol ug/m3
45 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m3
14 108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)ug/m3
18 91-20-3 ~Naphthalene ug/m3
0.72 100-42-5 Styrene ug/m3
2500 127-18-4 Tetrachloroethylene ug/m3
73 108-88-3 Toluene ug/m3
7.7 76-13-1 Trichloro-1,2,2-trifluoroethane, 1,1,2-ug/m3
15000 71-55-6 Trichloroethane, 1,1,1-ug/m3
69 79-01-6 Trichloroethylene ug/m3
120 75-69-4 Trichlorofluoromethane ug/m3
17 95-63-6 Trimethylbenzene, 1,2,4-ug/m3
6.4 108-67-8 Trimethylbenzene, 1,3,5-ug/m3
1.5 75-01-4 Vinyl Chloride ug/m3
129 1330-20-7 Xylenes ug/m3
Input Form 2D
Soil Gas Exposure Point Concentration Table
Data reflects the highest concentration for each compound detected in SS-1 through SS-12.
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: January 2021
Basis: November 2020 EPA RSL Table
Site ID: 24001-20-060
Exposure Unit ID: Worst Case Scenario
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 NC NC NC
Indoor Air NC NC NC
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air 4.5E-06 2.8E-01 NO
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
DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Soil Gas to Indoor Air
Version Date: January 2021
Basis: November 2020 EPA RSL Table
Site ID: 24001-20-060
Exposure Unit ID: Worst Case Scenario
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 820 8.2 -2.7E+04 6.0E-05
71-43-2 Benzene 4.5 0.045 1.6E+00 2.6E+01 2.9E-08 3.4E-04
75-15-0 Carbon Disulfide 8.4 0.084 -6.1E+02 2.7E-05
67-66-3 Chloroform 7.1 0.071 5.3E-01 8.6E+01 1.3E-07 1.7E-04
75-71-8 Dichlorodifluoromethane 2.9 0.029 -8.8E+01 6.6E-05
75-34-3 Dichloroethane, 1,1-2200 22 7.7E+00 -2.9E-0675-35-4 Dichloroethylene, 1,1-2200 22 -1.8E+02 2.5E-02156-59-2 Dichloroethylene, cis-1,2-20 0.2 --156-60-5 Dichloroethylene, trans-1,2-0.76 0.0076 -3.5E+01 4.3E-05123-91-1 Dioxane, 1,4-25 0.25 2.5E+00 2.6E+01 1.0E-07 1.9E-03
141-78-6 Ethyl Acetate 2.9 0.029 -6.1E+01 9.5E-05
100-41-4 Ethylbenzene 30 0.3 4.9E+00 8.8E+02 6.1E-08 6.8E-05
109-99-9 ~Tetrahydrofuran 2.5 0.025 -1.8E+03 2.9E-06
142-82-5 Heptane, N-5.5 0.055 -3.5E+02 3.1E-05
110-54-3 Hexane, N-5 0.05 -6.1E+02 1.6E-05591-78-6 Hexanone, 2-5.4 0.054 -2.6E+01 4.1E-0467-63-0 Isopropanol 140 1.4 -1.8E+02 1.6E-0378-93-3 Methyl Ethyl Ketone (2-Butanone)45 0.45 -4.4E+03 2.1E-05
108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)14 0.14 -2.6E+03 1.1E-05
91-20-3 ~Naphthalene 18 0.18 3.6E-01 2.6E+00 5.0E-07 1.4E-02
100-42-5 Styrene 0.72 0.0072 -8.8E+02 1.6E-06
127-18-4 Tetrachloroethylene 2500 25 4.7E+01 3.5E+01 5.3E-07 1.4E-01
108-88-3 Toluene 73 0.73 -4.4E+03 3.3E-05
76-13-1 Trichloro-1,2,2-trifluoroethane, 1,1,2-7.7 0.077 -4.4E+03 3.5E-0671-55-6 Trichloroethane, 1,1,1-15000 150 -4.4E+03 6.8E-0379-01-6 Trichloroethylene 69 0.69 3.0E+00 1.8E+00 2.3E-07 7.9E-02
75-69-4 Trichlorofluoromethane 120 1.2 --
95-63-6 Trimethylbenzene, 1,2,4-17 0.17 -5.3E+01 6.5E-04
108-67-8 Trimethylbenzene, 1,3,5-6.4 0.064 -5.3E+01 2.4E-04
75-01-4 Vinyl Chloride 1.5 0.015 2.8E+00 8.8E+01 5.4E-09 3.4E-05
1330-20-7 Xylenes 129 1.29 -8.8E+01 2.9E-03
Cumulative:4.5E-06 2.8E-01
All concentrations are in ug/m3
Output Form 3E
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