23081_Kroehler Mnfg Vapor Intrusion Assessment Report 20200217

Via Email

February 17, 2020

NCDEQ – Division of Waste Management
Brownfields Program
1646 Mail Service Center
Raleigh, NC 27699-1646

Attn: Mr. Bill Schmithorst, PG

Re: Vapor Intrusion Assessment Report
Kroehler Manufacturing
Charlotte, North Carolina
Brownfields Project No. 23081-19-060
H&H Project No. BCP-145

Dear Mr. Schmithorst:

On behalf of BIN – MR3412 LLC, please find the enclosed Vapor Intrusion Assessment Report
for the former Kroehler Manufacturing property (Brownfields Project No. 23081-19-060) for
your review and record. The vapor intrusion assessment activities documented in the report were
completed as part of property transaction due diligence activities.

Should you have any questions or need additional information, please do not hesitate to contact
me at [phone].

Sincerely,
Hart & Hickman, PC
Ralph McGee
Project Manager

Enclosure

cc: Mr. Pete Kidwell, Beacon Partners (Via Email)
Mr. John Core, Beacon Partners (Via Email)
Mr. Miller Otstott, Beacon Partners (Via Email
Ms. Mary Katherine Stukes, Park Poe (Via Email)
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Vapor Intrusion Assessment Report
Kroehler Manufacturing
3412 Monroe Road
Charlotte, North Carolina
H&H Job No. BCP-145

Table of Contents

1.0 Introduction .............................................................................................................................1 
1.1 Previous Assessment Activities .............................................................................................2 
1.2 Property Transaction Due Diligence Activities .....................................................................2 
2.0 Vapor Intrusion Assessment ..................................................................................................4 
2.1 Vapor Intrusion Sampling Activities .....................................................................................5 
2.2 Vapor Intrusion Assessment Results .....................................................................................7 
2.3 Vapor Intrusion Evaluation ....................................................................................................8 
3.0 Summary and Conclusions ..................................................................................................10 

List of Tables

Table 1 Summary of Sub-Slab Soil Vapor Analytical Results
Table 2 Summary of Radon Analytical Results and Calculated Attenuation Factors

List of Figures

Figure 1 Site Location Map
Figure 2 Sample Location Map

List of Appendices

Appendix A Laboratory Analytical Reports
Appendix B DEQ Risk Calculator
Appendix C Tabular Summary of Predicted Indoor Air Concentrations

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Vapor Intrusion Assessment Report
Kroehler Manufacturing
3412 Monroe Road
Charlotte, North Carolina
H&H Job No. BCP-145

1.0 Introduction

On behalf of BIN - MR3412 LLC, Hart & Hickman, PC (H&H) has prepared this report to
document vapor intrusion assessment activities recently completed at the former Kroehler
Manufacturing property located at 3412 Monroe Road in Charlotte, Mecklenburg County, North
Carolina (Site or subject Site). The Site is comprised of one approximately 6.55-acre parcel of
land (Parcel ID No.: 15903105) located in a mixed residential, commercial, and light industrial
area approximately two miles southeast of uptown Charlotte. A Site location map is provided as
Figure 1, and the Site and surrounding area are shown in Figure 2.

The Site is developed with an approximately 121,000-square-foot (sq ft) industrial warehouse
building constructed in 1950. An addition including a lower level basement was constructed on
the southwestern portion of the original warehouse building in the mid to late-1950s. The Site
building consists of a two-story office area, a show room, employee break areas, warehouse space,
two loading dock areas, and an out of use boiler room. Other improvements to the Site include
asphalt parking areas and access drives, outdoor storage areas, former and active railway spurs,
and landscaped and naturally vegetated areas.

Prior to 1950, the property consisted of undeveloped agricultural land. In the 1950s, the property
was developed with the existing industrial warehouse facility which was occupied by Kroehler
Manufacturing for furniture manufacturing operations until 1985. Greenline Corporation then
occupied the facility for conveyor component manufacturing operations until the early 2000s. The
property is currently occupied by Party Reflections, a party equipment rental company.

A description of previous assessment activities completed at the Site is provided in the following
section.
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1.1 Previous Assessment Activities

In August and September 2019, H&H conducted Phase I and II Environmental Site Assessment
(ESA) activities at the Site. The results of the Phase I and II ESA activities are documented in a
Phase I and II ESA Report prepared by H&H and dated October 7, 2019. Results of the Phase I
ESA identified several areas of potential environmental concern based on historical Site uses.
Phase II ESA activities included collection of six soil samples and one downgradient groundwater
sample for laboratory analysis in areas of concern to evaluate the potential for impact.

Phase II ESA soil sample laboratory analytical results indicated the presence of volatile organic
compounds (VOCs) and semi-VOCs (SVOCs) at concentrations above the North Carolina
Department of Environmental Quality (DEQ) Inactive Hazardous Sites Branch (IHSB) Protection
of Groundwater Preliminary Soil Remediation Goals (PRSGs). A low level of the polynuclear
aromatic hydrocarbon (PAH) benzo(a)pyrene was detected at a concentration above the DEQ
IHSB Residential PSRG. No compounds were detected at concentrations above the DEQ IHSB
Industrial/Commercial PSRGs in soil samples collected in areas of potential environmental
concern at the Site.

Groundwater sample laboratory analytical results identified low levels of 1,1-dichloroethane,
benzene, naphthalene, and 1-methylnaphthalene at concentrations above the DEQ 15A NCAC 2L
Groundwater Standards (2L Standards) in a sample collected in the southwestern portion of the
Site. No other compounds were detected at concentrations above the 2L Standards, and no
compounds were detected in Site groundwater at concentrations above the DEQ Division of Waste
Management (DWM) Vapor Intrusion Screening Levels (VISLs).

1.2 Property Transaction Due Diligence Activities

To address environmental concerns at the Site identified during previous assessment activities,
BIN - MR3412 LLC entered the Site into the DEQ Brownfields Program as part of property
transaction due diligence. The Site received a letter of eligibility on February 3, 2020 (Brownfields
Project No. 23081-79-060). In addition to entering the Site into the Brownfields Program, BIN -
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MR3412 LLC elected to complete vapor intrusion assessment activities as part of property
transaction due diligence activities to evaluate the potential for structural vapor intrusion into the
existing Site building.

Vapor intrusion assessment activities included collection of sub-slab soil vapor samples for
laboratory analysis within the Site building to determine if volatile compounds are present at levels
that pose unacceptable vapor intrusion risks. In addition, co-located sub-slab radon samples and
indoor air radon samples were collected for laboratory analysis to establish Site-specific
attenuation factors from sub-slab vapor to indoor air within the Site building. A discussion of the
vapor intrusion assessment activities and results is provided in the following sections.

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2.0 Vapor Intrusion Assessment

In December 2019, H&H completed vapor intrusion assessment activities at the Site to evaluate
the potential for structural vapor intrusion into the Site building at unacceptable levels. The vapor
intrusion assessment activities were conducted in general accordance with the DEQ IHSB
Guidelines for Assessment and Cleanup (Guidelines) dated October 2015, the DEQ DWM Vapor
Intrusion Guidance (VI Guidance) dated March 2018, and the most recent versions of the U.S.
Environmental Protection Agency (EPA) Region IV Science Ecosystem Support Division (SESD)
Field Branches Quality System and Technical Procedures guidance.

H&H collected four (4) sub-slab soil vapor samples (SSV-1 through SSV-4) for laboratory analysis
within the Site building. In addition, H&H collected co-located sub-slab radon samples (SSR-1
through SSR-4) and indoor air radon samples (IAR-1 through IAR-4) for laboratory analysis at
each sub-slab sample location to establish Site-specific attenuation factors between sub-slab vapor
and indoor air to further evaluate the potential for vapor intrusion. The sub-slab and indoor air
sample locations are shown in Figure 2 and are described further below.

 Co-located samples SSV-1, SSR-1, and IAR-1 were collected in the northeastern portion
of the warehouse building;
 Co-located samples SSV-2, SSR-2, and IAR-2 were collected in the central portion of the
warehouse building;
 Co-located samples SSV-3, SSR-3, and IAR-3 were collected in the southwestern portion
of the warehouse building; and
 Co-located samples SSV-4, SSR-4, and IAR-4 were collected in the lower level basement
area located in the southwestern portion of the Site building.

For quality assurance and quality control purposes (QA/QC), laboratory duplicate samples were
analyzed along with the investigative samples to evaluate analytical reproducibility. To evaluate
the reproducibility of the sample results, H&H collected a duplicate sub-slab soil vapor sample
(SSV-DUP) from sample location SSV-4. In addition, a duplicate indoor air radon sample (IAR-
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DUP) and a duplicate sub-slab radon sample (SSR-DUP) were collected from sample location
IAR-4/SSR-4.

Details of the vapor intrusion sampling activities and results are described in the following
sections.

2.1 Vapor Intrusion Sampling Activities

On December 14, 2019, H&H collected four indoor air radon samples (IAR-1 through IAR-4)
within the Site building (Figure 2). Each indoor air radon sample was collected into a laboratory
supplied 1-Liter Tedlar® bag using a dedicated laboratory supplied syringe and three-way valve at
a sampling rate of approximately 60 to 80 milliliters per min (mL/min). At the time the indoor air
radon samples were collected, typical warehouse conditions were maintained (i.e., Heating,
Ventilation and Cooling [HVAC] systems were operational with typical Party Reflections
employee ingress/egress through doors and loading docks).

Following collection of the indoor air radon samples, H&H installed sub-slab sample points at
each indoor air sampling location. The sub-slab sample points were constructed utilizing Cox
Colvin Vapor Pins™ (Vapor Pins™). The Vapor Pins™ were installed at each sample location
utilizing a hammer drill equipped with a 5/8-inch diameter bit to advance a borehole through the
concrete slab and approximately six inches into the underlying soil. Following borehole
advancement, loose cuttings were removed and a Vapor PinTM assembly (brass sampling point and
silicone sleeve) was placed and seated in the drilled hole by tapping the assembly into place using
the Cox Colvin installation/extraction tool and a dead blow hammer to form an air tight seal.
Teflon® sample tubing was then secured to the barbed end of the Vapor PinTM assembly. Locations
of the sub-slab sample points are shown on Figure 2.

Prior to collection of the sub-slab soil vapor samples, the sampling train was assembled at each
sampling location by connecting the Teflon® sample tubing to a laboratory supplied 1-Liter
Summa canister and laboratory supplied airflow regulator using a brass nut and ferrule to form an
air tight seal. Once the sampling system was assembled, a helium leak check was performed on
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the sampling point and sub-slab soil vapor sampling train at each sampling location. The leak
check was performed by placing a shroud over each sample point and the sampling train, flooding
the shroud with helium gas, and using a calibrated helium gas detector to measure helium
concentrations within the shroud. When 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 sub-slab vapor into a Tedlar® bag. The purged vapor was analyzed using the helium gas
detector to confirm that helium concentrations from the sample tubing were less than 10% of the
helium concentrations measured within the shroud. The results of the leak checks at each point
did not indicate the presence of helium in the Tedlar® bag.

Following successful leak checks, sub-slab soil vapor samples (SSV-1 through SSV-4) were
collected directly into the Summa canisters by opening the intake valve on the airflow regulators.
The airflow regulators were calibrated by the laboratory to allow the Summa canisters to fill slowly
at a rate of approximately 100 mL/min. Vacuum readings on the Summa canisters were recorded
prior to and following the sampling period to ensure that adequate sample volume was collected.
Per laboratory protocol, a vacuum was maintained within the canisters at the conclusion of the
sampling event.

Upon completion of the sampling, the intake valve was closed and the airflow regulator was
disconnected from the sample canister. The starting and ending vacuums in each canister were
recorded on the chain-of-custody and submitted to the laboratory along with the samples. The
canisters were placed in laboratory supplied shipping containers, properly labeled, and shipped
under standard chain-of-custody protocols to Pace Analytical Services (Pace) for analysis of VOCs
by EPA Method TO-15.

Upon collection of the sub-slab soil vapor samples, sub-slab radon samples (SSR-1 through
SSR-4) were collected from each sampling point into a laboratory supplied 1-Liter Tedlar® bag
using a dedicated laboratory supplied syringe and three-way valve. The sub-slab radon samples
were collected at a rate of approximately 60 to 80 mL/min.

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The Tedlar® bags containing the indoor air radon samples and the sub-slab radon samples were
sealed, properly labeled, placed in a shipping container, and shipped under standard chain of
custody protocols to the Department of Earth Sciences at the University of Southern California in
Los Angeles, California for radon analysis by EPA Method GS: Grab Sample/Scintillation Cell
Counting.

Following sample collection, the Vapor PinsTM were removed and the concrete was patched to
match the surrounding surface. Additionally, the sample locations were measured relative to
known interior benchmarks (i.e., pillars, walls, doorways, etc.) and recorded by sampling
personnel.

2.2 Vapor Intrusion Assessment Results

A tabular summary of the sub-slab soil vapor sample analytical results is included as Table 1. The
sub-slab soil vapor analytical results were compared to DEQ DWM Residential and Non-
Residential Vapor Intrusion Sub-Slab and Exterior Soil Gas Screening Levels (SGSLs) dated
February 2018. A copy of the laboratory analytical report is provided in Appendix A. A summary
of sub-slab soil vapor analytical results is provided below.

Laboratory analytical results indicate that several compounds were detected at concentrations
above the laboratory method detection limits in each sub-slab soil vapor sample. However, no
compounds were detected at concentrations above the DEQ DWM Residential or Non-Residential
Vapor Intrusion SGSLs. This is consistent with previous Phase II ESA soil and groundwater
sample analytical results.

A tabular summary of the indoor air radon and sub-slab radon sample laboratory analytical results
is provided in Table 2. A copy of the laboratory analytical report is included in Appendix A. The
radon sampling results were used to calculate attenuation factors between sub-slab and indoor air
at each sample location. The attenuation factors can be used to further evaluate the potential for
vapor intrusion by predicting compound concentrations in indoor air based on results of sub-slab
soil vapor samples. As shown in Table 2, the results of the radon measurements indicated
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attenuation factors ranging from 0.00109 to 0.00024 which within the typical range for industrial
warehouse building concrete slabs.

2.3 Vapor Intrusion Evaluation

The DEQ DWM Vapor Intrusion SGSLs are conservative and based upon a Lifetime Incremental
Cancer Risk (LICR) of 1x10-5 for potential carcinogenic effects and a Hazard Quotient (HQ) of
0.2 for potential non-carcinogenic effects. The DEQ acceptable risk level for potential
carcinogenic risk is a cumulative LICR of less than 1 x 10-4 and the acceptable risk level for non-
carcinogenic risk is a cumulative Hazard Index (HI) of less than 1.

Although no compounds were detected at concentrations exceeding the DEQ DWM Vapor
Intrusion SGSLs in the sub-slab soil vapor samples collected at the Site, H&H utilized the DEQ
risk calculator (December 2019) to evaluate potential cumulative risks associated with the sub-
slab soil vapor to indoor air pathway to confirm there are no vapor intrusion concerns. The highest
concentration of any compound detected in any sub-slab soil vapor sample collected within the
Site building was used in the calculation to represent a hypothetical worst-case condition for both
residential and non-residential use scenarios.

Hypothetical worst-case non-residential use risk calculator results indicate a calculated LICR of
7.7 x 10-7 for cumulative carcinogenic risks and a calculated HI of 0.002 for cumulative non-
carcinogenic risks. Hypothetical worst-case residential use scenario risk calculator results indicate
a calculated LICR of 1.0 x 10-5 and a calculated HI of 0.26. Worst-case scenario risk calculator
results for the sub-slab soil vapor to indoor air pathway confirm that calculated cumulative vapor
intrusion risks are below the DEQ and EPA acceptable levels for residential and non-residential
uses. A copy of the completed risk calculator is included in Appendix B.

Although not necessary based on sub-slab soil vapor sample results, but because the radon data
was available and used to calculate Site-specific attenuation factors at each sampling location,
H&H utilized the highest concentration of any compound detected in any sub-slab soil vapor
sample collected within the Site building and the most conservative attenuation factor established
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by the radon measurements (0.00109) to predict indoor air concentrations. As expected, no
predicted indoor air concentrations exceed the DEQ DWM Residential or Non-Residential Vapor
Intrusion Indoor Air Screening levels. In addition, hypothetical worst-case calculated cumulative
carcinogenic and non-carcinogenic risks based on the predicted indoor air concentrations are
orders of magnitude below the DEQ and EPA acceptable levels. A tabular summary of the
calculated indoor air concentrations based on the most conservative attenuation factor is included
as Appendix C.

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3.0 Summary and Conclusions

In December 2019, H&H completed vapor intrusion assessment activities at the former Kroehler
Manufacturing Brownfields property located at 3412 Monroe Road in Charlotte, Mecklenburg
County, North Carolina. The vapor intrusion assessment activities included collection of sub-slab
soil vapor samples to evaluate the potential for structural vapor intrusion into the Site building. In
addition, co-located sub-slab radon samples and indoor air radon samples were collected to
establish Site-specific attenuation factors for sub-slab vapor to indoor air at each sampling
location. A brief summary of the vapor intrusion assessment results is provided below.

 Sub-slab soil vapor sample laboratory analytical results indicate that several compounds
were detected at concentrations above the laboratory method detection limits in each
sample. No compounds were detected at concentrations above the DEQ DWM Residential
or Non-Residential Vapor Intrusion SGSLs. This is consistent with results of previous soil
and groundwater assessment activities completed at the Site.

 Hypothetical worst-case risk calculator results for the sub-slab soil vapor to indoor air
pathway indicate that calculated cumulative carcinogenic and non-carcinogenic risk are
well below the DEQ and EPA acceptable levels for residential and non-residential uses.
Predicted indoor air concentrations using the most conservative attenuation factor based
on the radon measurements and the highest compound concentrations detected in any sub-
slab soil vapor sample indicate that no predicted indoor air concentration exceeds the DEQ
DWM Residential or Non-Residential IASLs. In addition, hypothetical worst-case
calculated cumulative carcinogenic and non-carcinogenic risks based on the predicted
indoor air concentrations are orders of magnitude below the DEQ and EPA acceptable
levels.  

Results of vapor intrusion assessment activities completed at the Site are consistent with previously
completed assessment activities and confirm that compounds are not present in sub-slab soil vapor
at concentrations that pose unacceptable vapor intrusion risks into the current Site building.
Table 1Summary of Sub-Slab Soil Vapor Analytical ResultsKroehler Manufacturing3412 Monroe RoadCharlotte, North CarolinaH&H Job No. BCP-145Northeast Central SouthwestSample IDSSV-1 SSV-2 SSV-3Date12/14/2019 12/14/2019 12/14/2019UnitsVOCs (TO-15)Acetone 130176113 173 180 220,000 2,700,000Benzene 1.41.10.79 16.6 15.6 120 1,6002-Butanone (MEK) 11.81310.2 15.7 19.1 35,000 440,000Carbon disulfide 2.00.57 J0.43 J 20.1 20.3 4,900 61,000Chloroform<0.40<0.38<0.383.8 3.7 41 530Chloromethane<0.321.5<0.30 <0.290.86 630 7,900Cyclohexane 2.4 J<0.681.0 J 2.0 J 2.2 J 42,000 530,0001,3-Dichlorobenzene 2.4 J2.1 J2.1 J 1.9 J<1.1NE NEDichlorodifluoromethane 2.83.12.8 1.9 J 2.1 700 8,8001,1-Dichloroethane<0.45 <0.44 <0.441.6 1.6 J 580 7,7001,1-Dichloroethene<0.55 <0.53 <0.5331.3 30.3 1,400 18,000Ethyl acetate 2.21.71.5 1.2 J 1.3 J 490 6,100Ethylbenzene 2.01.6 J1.5 J 3.8 3.7 370 4,9004-Ethyltoluene 1.9 J<1.1<1.12.0 J 2.1 J NE NEHeptane 2.93.5<0.744.4 4.2 2,800 35,000Hexane 5.18.32.8 4.1 4.5 4,900 61,0002-Hexanone 2.0 J<1.41.7 J 1.5 J 2.2 J 210 2,600Methylene Chloride 18.56.7 J13.5 13.5 18.2 4,200 53,0004-Methyl-2-pentanone (MIBK) 1.7 J2.9 J1.2 J 1.3 J 2.1 J 21,000 260,000Naphthalene<2.64.1 J 4.1 J 23.8 20.5 21 260Propylene<0.283.7 1.1 8.4 8.8 21,000 260,000Styrene 2.01.92.0 2.3 2.4 7,000 88,000Tetrachloroethene 0.74 J1.1 J1.0 J 1.2 J 1.2 J 280 3,500Tetrahydrofuran 0.62 J1.0 J<0.51 <0.49 <0.5114,000 180,000Toluene 6.04.44.0 25.9 26.2 35,000 440,0001,1,1-Trichloroethane<0.621.2 J 1.3 J 4.4 4.3 35,000 440,000Trichlorofluoromethane 1.1 J1.3 J1.2 J 1.1 J 1.0 J NE NE1,2,4-Trimethylbenzene 2.92.12.1 4.2 4.0 420 5,3001,3,5-Trimethylbenzene 2.11.4 J1.4 J 2.8 2.8 420 5,300m&p-Xylene 5.94.23.8 13.9 13.3 700 8,800o-Xylene 2.21.5 J1.4 J 4.6 4.3 700 8,800Notes:1) NC Department of Environmental Quality (DEQ) Division of Waste Management (DWM) Sub-slab and Exterior Soil Gas Screening Levels (SGSLs) (February 2018) Compound concentrations are reported in micrograms per cubic meter (μg/m3)Compound concentrations are reported to the laboratory method detection limits.Only those compounds detected in at least one sample are shown in the table above.Laboratory analytical method shown in parentheses.VOCs = volatile organic compounds; NE = Not EstablishedJ = compound was detected above the laboratory method detection limit, but below the laboratory reporting limit resulting in a laboratory estimated concentration.12/14/2019Warehouse - BasementNon-Residential SGSLs1SSV-4 / SSV-DUPSample LocationWarehouse - First FloorSouthwestug/m3Residential SGSLs1S:\AAA‐Master Projects\Beacon Partners‐ BEP or BCP\BCP‐145 Monroe Road\VI Assessment\Tables\SS_IAS Data Tables_rev12/12/2020Table 1 (Page 1 of 1)Hart & Hickman, PC
Table 2Summary of Radon Sample Analytical Results and Calculated Attenuation FactorsKroehler Manufacturing3412 Monroe RoadCharlotte, North CarolinaH&H Job No. BCP-145Northeast Central SouthwestSample IDIAR-1/SSR-1 IAR-2/SSR-2 IAR-3/SSR-3 IAR-4/SS-4 IAR-DUP/SSR-DUPDate12/14/2019 12/14/2019 12/14/2019UnitsIAR0.80 0.31 0.65 0.88 0.64SSR731 1,283 1,741 1,015 1,049Attenuation Factor 0.00109 0.00024 0.00037 0.00087 0.00061Notes:Co-located sub-slab radon (SSR) samples and indoor air radon (IAR) samples were collected for laboratory analysis by H&H on December 14, 2019.Concentrations reported in picocuries per liter (pCi/L)Attenuation factor calculated by dividing the indoor air radon sample concentration by the sub-slab radon sample concentration.Warehouse - BasementpCi/L12/14/2019Sample LocationWarehouse - First FloorSouthwestS:\AAA-Master Projects\Beacon Partners- BEP or BCP\BCP-145 Monroe Road\VI Assessment\Tables\SS_IAS Data Tables_rev12/12/2020Table 2 (Page 1 of 1)Hart & Hickman, PC
TITLE
PROJECT
SITE LOCATION MAP
KROEHLER MANUFACTURING3412 MONROE ROAD CHARLOTTE, NORTH CAROLINA
DATE:
JOB NO:
REVISION NO:
FIGURE:
2-7-2020 0
1BCP-145
SITE
0 2000 4000
APPROXIMATE
SCALE IN FEETN
U.S.G.S. QUADRANGLE MAP
QUADRANGLE
7.5 MINUTE SERIES (TOPOGRAPHIC)
CHARLOTTE EAST, NC, 1991
REVISION NO. 0
JOB NO. BCP-145
DATE: 2-13-20
FIGURE NO. 2
KROEHLER MANUFACTURING
3412 MONROE ROAD
CHARLOTTE, NORTH CAROLINA
SAMPLE LOCATION MAP
LEGEND
BROWNFIELDS PROPERTY BOUNDARY
RAILROAD TRACKS
SUB-SLAB SOIL VAPOR AND SUB-SLAB
RADON SAMPLING POINT
INDOOR AIR RADON 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
CAROLINA PRODUCTS
(1132 PRO AM DRIVE)
M
O
N
R
O
E

RO
A
D
PRO AM
DR
IV
E
LA
T
O
B
E

D
R
I
V
E
THE DOG KNOWLEDGE
(1110 PRO AM DRIVE)
PENSKE TRUCK RENTAL
(3434 MONROE ROAD)
TECHNOCOM
(3330 MONROE ROAD)
ATLANTIC SWEETENER
(512 DOMINO COURT)
RESIDENTIAL
CHIPL
E
Y
A
V
E
N
U
E
PROPANE STORAGE
LOADING DOCKS
LOADING DOCKS
S
H
OW

R
O
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M

A
N
D
O
F
F
I
C
E

A
R
E
A
DISH WASHING
AREA
F
O
RM
E
R

B
O
I
L
E
RRO
O
M
NOTE:
1.AERIAL IMAGE AND PARCEL BOUNDARY DATA OBTAINED
FROM MECKLENBURG COUNTY GIS 2019.
FORMER DRUM STORAGE
BUILDING
LOWER LEVEL
BASEMENT
IAR-1
IAR-2
IAR-3
IAR-4
SSR-1
SSV-1
SSR-2
SSV-2
SSR-3SSV-3
SSR-4
SSV-4 TENT WASHING AREA
LINENS WASHING
AND DRYING AREA
ABANDONED
RAILROAD SPUR
S:\AAA-Master Projects\Beacon Partners- BEP or BCP\BCP-145 Monroe Road\Figures\Site Map.dwg, FIG 2, 2/13/2020 11:01:10 AM, sperry

Appendix A

Laboratory Analytical Report
#=CL#
December 23, 2019
LIMS USE: FR - ALEXIS MCKENZIE
LIMS OBJECT ID: 92457567
92457567
Project:
Pace Project No.:
RE:
Alexis McKenzie
Hart & Hickman
2923 S Tryon Street
Suite 100
Charlotte, NC 28203
BCP.145
Dear Alexis McKenzie:
Enclosed are the analytical results for sample(s) received by the laboratory on December 16, 2019.
The results relate only to the samples included in this report. Results reported herein conform to the
most current, applicable TNI/NELAC standards and the laboratory's Quality Assurance Manual,
where applicable, unless otherwise noted in the body of the report.
If you have any questions concerning this report, please feel free to contact me.
Sincerely,
Kevin Godwin
[e-mail]
Project Manager
1(704)875-9092
Enclosures
REPORT OF LABORATORY ANALYSIS
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Page 1 of 23
#=CP#
CERTIFICATIONS
Pace Project No.:
Project:
92457567
BCP.145
Pace Analytical Services Minneapolis
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REPORT OF LABORATORY ANALYSIS
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#=SS#
SAMPLE SUMMARY
Pace Project No.:
Project:
92457567
BCP.145
Lab ID Sample ID Matrix Date Collected Date Received
92457567001 SS-1 CAN#2211 Air 12/14/19 09:05 12/16/19 12:39
92457567002 SS-2 CAN#2080 Air 12/14/19 09:34 12/16/19 12:39
92457567003 SS-3 CAN#3095 Air 12/14/19 10:08 12/16/19 12:39
92457567004 SS-4 CAN#2941 Air 12/14/19 11:00 12/16/19 12:39
92457567005 SS-DUP CAN#2626 Air 12/14/19 00:00 12/16/19 12:39
REPORT OF LABORATORY ANALYSIS
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Page 3 of 23
#=SA#
SAMPLE ANALYTE COUNT
Pace Project No.:
Project:
92457567
BCP.145
Lab ID Sample ID Method
Analytes
Reported LaboratoryAnalysts
92457567001 SS-1 CAN#2211 TO-15 58 PASI-MMJL
92457567002 SS-2 CAN#2080 TO-15 58 PASI-MMJL
92457567003 SS-3 CAN#3095 TO-15 58 PASI-MMJL
92457567004 SS-4 CAN#2941 TO-15 58 PASI-MMJL
92457567005 SS-DUP CAN#2626 TO-15 58 PASI-MMJL
REPORT OF LABORATORY ANALYSIS
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#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92457567
BCP.145
Sample:SS-1 CAN#2211 Lab ID:92457567001 Collected:12/14/19 09:05 Received:12/16/19 12:39 Matrix:Air
Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit
Report
Analytical Method: TO-15TO15 MSV AIR
Acetone 130 ug/m3 12/20/19 23:28 67-64-14.9 2.4 2.02
Benzene 1.4 ug/m3 12/20/19 23:28 71-43-20.66 0.31 2.02
Bromodichloromethane ND ug/m3 12/20/19 23:28 75-27-42.7 0.74 2.02
Bromoform ND ug/m3 12/20/19 23:28 75-25-210.6 2.9 2.02
Bromomethane ND ug/m3 12/20/19 23:28 74-83-91.6 0.46 2.02
1,3-Butadiene ND ug/m3 12/20/19 23:28 106-99-00.91 0.26 2.02
2-Butanone (MEK)11.8 ug/m3 12/20/19 23:28 78-93-36.1 0.75 2.02
Carbon disulfide 2.0 ug/m3 12/20/19 23:28 75-15-01.3 0.44 2.02
Carbon tetrachloride ND ug/m3 12/20/19 23:28 56-23-52.6 0.87 2.02
Chlorobenzene ND ug/m3 12/20/19 23:28 108-90-71.9 0.56 2.02
Chloroethane ND ug/m3 12/20/19 23:28 75-00-31.1 0.53 2.02
Chloroform ND ug/m3 12/20/19 23:28 67-66-31.0 0.40 2.02
Chloromethane ND ug/m3 12/20/19 23:28 74-87-30.85 0.32 2.02
Cyclohexane 2.4J ug/m3 12/20/19 23:28 110-82-73.5 0.71 2.02
Dibromochloromethane ND ug/m3 12/20/19 23:28 124-48-13.5 1.5 2.02
1,2-Dibromoethane (EDB)ND ug/m3 12/20/19 23:28 106-93-43.2 0.74 2.02
1,2-Dichlorobenzene ND ug/m3 12/20/19 23:28 95-50-12.5 1.0 2.02
1,3-Dichlorobenzene 2.4J ug/m3 12/20/19 23:28 541-73-12.5 1.2 2.02
1,4-Dichlorobenzene ND ug/m3 12/20/19 23:28 106-46-76.2 2.0 2.02
Dichlorodifluoromethane 2.8 ug/m3 12/20/19 23:28 75-71-82.0 0.59 2.02
1,1-Dichloroethane ND ug/m3 12/20/19 23:28 75-34-31.7 0.45 2.02
1,2-Dichloroethane ND ug/m3 12/20/19 23:28 107-06-20.83 0.30 2.02
1,1-Dichloroethene ND ug/m3 12/20/19 23:28 75-35-41.6 0.55 2.02
cis-1,2-Dichloroethene ND ug/m3 12/20/19 23:28 156-59-21.6 0.44 2.02
trans-1,2-Dichloroethene ND ug/m3 12/20/19 23:28 156-60-51.6 0.58 2.02
1,2-Dichloropropane ND ug/m3 12/20/19 23:28 78-87-51.9 0.46 2.02
cis-1,3-Dichloropropene ND ug/m3 12/20/19 23:28 10061-01-51.9 0.61 2.02
trans-1,3-Dichloropropene ND ug/m3 12/20/19 23:28 10061-02-61.9 0.89 2.02
Dichlorotetrafluoroethane ND ug/m3 12/20/19 23:28 76-14-22.9 0.88 2.02
Ethyl acetate 2.2 ug/m3 12/20/19 23:28 141-78-61.5 0.38 2.02
Ethylbenzene 2.0 ug/m3 12/20/19 23:28 100-41-41.8 0.62 2.02
4-Ethyltoluene 1.9J ug/m3 12/20/19 23:28 622-96-85.0 1.2 2.02
n-Heptane 2.9 ug/m3 12/20/19 23:28 142-82-51.7 0.77 2.02
Hexachloro-1,3-butadiene ND ug/m3 12/20/19 23:28 87-68-310.9 4.0 2.02
n-Hexane 5.1 ug/m3 12/20/19 23:28 110-54-31.4 0.63 2.02
2-Hexanone 2.0J ug/m3 12/20/19 23:28 591-78-68.4 1.5 2.02
Methylene Chloride 18.5 ug/m3 12/20/19 23:28 75-09-27.1 2.4 2.02
4-Methyl-2-pentanone (MIBK)1.7J ug/m3 12/20/19 23:28 108-10-18.4 1.0 2.02
Methyl-tert-butyl ether ND ug/m3 12/20/19 23:28 1634-04-47.4 1.3 2.02
Naphthalene ND ug/m3 12/20/19 23:28 91-20-35.4 2.6 2.02
Propylene ND ug/m3 12/20/19 23:28 115-07-10.71 0.28 2.02
Styrene 2.0 ug/m3 12/20/19 23:28 100-42-51.7 0.69 2.02
1,1,2,2-Tetrachloroethane ND ug/m3 12/20/19 23:28 79-34-52.8 0.62 2.02
Tetrachloroethene 0.74J ug/m3 12/20/19 23:28 127-18-41.4 0.63 2.02
Tetrahydrofuran 0.62J ug/m3 12/20/19 23:28 109-99-91.2 0.53 2.02
Toluene 6.0 ug/m3 12/20/19 23:28 108-88-31.5 0.71 2.02
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 12/23/2019 11:51 AM
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Page 5 of 23
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92457567
BCP.145
Sample:SS-1 CAN#2211 Lab ID:92457567001 Collected:12/14/19 09:05 Received:12/16/19 12:39 Matrix:Air
Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit
Report
Analytical Method: TO-15TO15 MSV AIR
1,2,4-Trichlorobenzene ND ug/m3 12/20/19 23:28 120-82-115.2 7.5 2.02
1,1,1-Trichloroethane ND ug/m3 12/20/19 23:28 71-55-62.2 0.62 2.02
1,1,2-Trichloroethane ND ug/m3 12/20/19 23:28 79-00-51.1 0.49 2.02
Trichloroethene ND ug/m3 12/20/19 23:28 79-01-61.1 0.51 2.02
Trichlorofluoromethane 1.1J ug/m3 12/20/19 23:28 75-69-42.3 0.74 2.02
1,1,2-Trichlorotrifluoroethane ND ug/m3 12/20/19 23:28 76-13-13.2 1.1 2.02
1,2,4-Trimethylbenzene 2.9 ug/m3 12/20/19 23:28 95-63-62.0 0.91 2.02
1,3,5-Trimethylbenzene 2.1 ug/m3 12/20/19 23:28 108-67-82.0 0.81 2.02
Vinyl acetate ND ug/m3 12/20/19 23:28 108-05-41.4 0.55 2.02
Vinyl chloride ND ug/m3 12/20/19 23:28 75-01-40.53 0.25 2.02
m&p-Xylene 5.9 ug/m3 12/20/19 23:28 179601-23-13.6 1.4 2.02
o-Xylene 2.2 ug/m3 12/20/19 23:28 95-47-61.8 0.69 2.02
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 12/23/2019 11:51 AM
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Page 6 of 23
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92457567
BCP.145
Sample:SS-2 CAN#2080 Lab ID:92457567002 Collected:12/14/19 09:34 Received:12/16/19 12:39 Matrix:Air
Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit
Report
Analytical Method: TO-15TO15 MSV AIR
Acetone 176 ug/m3 12/20/19 23:54 67-64-14.7 2.3 1.94
Benzene 1.1 ug/m3 12/20/19 23:54 71-43-20.63 0.30 1.94
Bromodichloromethane ND ug/m3 12/20/19 23:54 75-27-42.6 0.71 1.94
Bromoform ND ug/m3 12/20/19 23:54 75-25-210.2 2.8 1.94
Bromomethane ND ug/m3 12/20/19 23:54 74-83-91.5 0.44 1.94
1,3-Butadiene ND ug/m3 12/20/19 23:54 106-99-00.87 0.25 1.94
2-Butanone (MEK)13.0 ug/m3 12/20/19 23:54 78-93-35.8 0.72 1.94
Carbon disulfide 0.57J ug/m3 12/20/19 23:54 75-15-01.2 0.42 1.94
Carbon tetrachloride ND ug/m3 12/20/19 23:54 56-23-52.5 0.83 1.94
Chlorobenzene ND ug/m3 12/20/19 23:54 108-90-71.8 0.53 1.94
Chloroethane ND ug/m3 12/20/19 23:54 75-00-31.0 0.50 1.94
Chloroform ND ug/m3 12/20/19 23:54 67-66-30.96 0.38 1.94
Chloromethane 1.5 ug/m3 12/20/19 23:54 74-87-30.81 0.30 1.94
Cyclohexane ND ug/m3 12/20/19 23:54 110-82-73.4 0.68 1.94
Dibromochloromethane ND ug/m3 12/20/19 23:54 124-48-13.4 1.4 1.94
1,2-Dibromoethane (EDB)ND ug/m3 12/20/19 23:54 106-93-43.0 0.71 1.94
1,2-Dichlorobenzene ND ug/m3 12/20/19 23:54 95-50-12.4 0.97 1.94
1,3-Dichlorobenzene 2.1J ug/m3 12/20/19 23:54 541-73-12.4 1.1 1.94
1,4-Dichlorobenzene ND ug/m3 12/20/19 23:54 106-46-75.9 1.9 1.94
Dichlorodifluoromethane 3.1 ug/m3 12/20/19 23:54 75-71-82.0 0.57 1.94
1,1-Dichloroethane ND ug/m3 12/20/19 23:54 75-34-31.6 0.44 1.94
1,2-Dichloroethane ND ug/m3 12/20/19 23:54 107-06-20.80 0.29 1.94
1,1-Dichloroethene ND ug/m3 12/20/19 23:54 75-35-41.6 0.53 1.94
cis-1,2-Dichloroethene ND ug/m3 12/20/19 23:54 156-59-21.6 0.42 1.94
trans-1,2-Dichloroethene ND ug/m3 12/20/19 23:54 156-60-51.6 0.55 1.94
1,2-Dichloropropane ND ug/m3 12/20/19 23:54 78-87-51.8 0.45 1.94
cis-1,3-Dichloropropene ND ug/m3 12/20/19 23:54 10061-01-51.8 0.59 1.94
trans-1,3-Dichloropropene ND ug/m3 12/20/19 23:54 10061-02-61.8 0.85 1.94
Dichlorotetrafluoroethane ND ug/m3 12/20/19 23:54 76-14-22.8 0.85 1.94
Ethyl acetate 1.7 ug/m3 12/20/19 23:54 141-78-61.4 0.37 1.94
Ethylbenzene 1.6J ug/m3 12/20/19 23:54 100-41-41.7 0.59 1.94
4-Ethyltoluene ND ug/m3 12/20/19 23:54 622-96-84.8 1.1 1.94
n-Heptane 3.5 ug/m3 12/20/19 23:54 142-82-51.6 0.74 1.94
Hexachloro-1,3-butadiene ND ug/m3 12/20/19 23:54 87-68-310.5 3.8 1.94
n-Hexane 8.3 ug/m3 12/20/19 23:54 110-54-31.4 0.60 1.94
2-Hexanone ND ug/m3 12/20/19 23:54 591-78-68.1 1.4 1.94
Methylene Chloride 6.7J ug/m3 12/20/19 23:54 75-09-26.8 2.3 1.94
4-Methyl-2-pentanone (MIBK)2.9J ug/m3 12/20/19 23:54 108-10-18.1 1.0 1.94
Methyl-tert-butyl ether ND ug/m3 12/20/19 23:54 1634-04-47.1 1.3 1.94
Naphthalene 4.1J ug/m3 12/20/19 23:54 91-20-35.2 2.5 1.94
Propylene 3.7 ug/m3 12/20/19 23:54 115-07-10.68 0.27 1.94
Styrene 1.9 ug/m3 12/20/19 23:54 100-42-51.7 0.67 1.94
1,1,2,2-Tetrachloroethane ND ug/m3 12/20/19 23:54 79-34-52.7 0.60 1.94
Tetrachloroethene 1.1J ug/m3 12/20/19 23:54 127-18-41.3 0.61 1.94
Tetrahydrofuran 1.0J ug/m3 12/20/19 23:54 109-99-91.2 0.51 1.94
Toluene 4.4 ug/m3 12/20/19 23:54 108-88-31.5 0.68 1.94
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 12/23/2019 11:51 AM
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Page 7 of 23
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92457567
BCP.145
Sample:SS-2 CAN#2080 Lab ID:92457567002 Collected:12/14/19 09:34 Received:12/16/19 12:39 Matrix:Air
Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit
Report
Analytical Method: TO-15TO15 MSV AIR
1,2,4-Trichlorobenzene ND ug/m3 12/20/19 23:54 120-82-114.6 7.2 1.94
1,1,1-Trichloroethane 1.2J ug/m3 12/20/19 23:54 71-55-62.2 0.60 1.94
1,1,2-Trichloroethane ND ug/m3 12/20/19 23:54 79-00-51.1 0.47 1.94
Trichloroethene ND ug/m3 12/20/19 23:54 79-01-61.1 0.49 1.94
Trichlorofluoromethane 1.3J ug/m3 12/20/19 23:54 75-69-42.2 0.71 1.94
1,1,2-Trichlorotrifluoroethane ND ug/m3 12/20/19 23:54 76-13-13.0 1.1 1.94
1,2,4-Trimethylbenzene 2.1 ug/m3 12/20/19 23:54 95-63-61.9 0.88 1.94
1,3,5-Trimethylbenzene 1.4J ug/m3 12/20/19 23:54 108-67-81.9 0.77 1.94
Vinyl acetate ND ug/m3 12/20/19 23:54 108-05-41.4 0.52 1.94
Vinyl chloride ND ug/m3 12/20/19 23:54 75-01-40.50 0.24 1.94
m&p-Xylene 4.2 ug/m3 12/20/19 23:54 179601-23-13.4 1.4 1.94
o-Xylene 1.5J ug/m3 12/20/19 23:54 95-47-61.7 0.67 1.94
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 12/23/2019 11:51 AM
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Page 8 of 23
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92457567
BCP.145
Sample:SS-3 CAN#3095 Lab ID:92457567003 Collected:12/14/19 10:08 Received:12/16/19 12:39 Matrix:Air
Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit
Report
Analytical Method: TO-15TO15 MSV AIR
Acetone 113 ug/m3 12/21/19 00:20 67-64-14.7 2.3 1.94
Benzene 0.79 ug/m3 12/21/19 00:20 71-43-20.63 0.30 1.94
Bromodichloromethane ND ug/m3 12/21/19 00:20 75-27-42.6 0.71 1.94
Bromoform ND ug/m3 12/21/19 00:20 75-25-210.2 2.8 1.94
Bromomethane ND ug/m3 12/21/19 00:20 74-83-91.5 0.44 1.94
1,3-Butadiene ND ug/m3 12/21/19 00:20 106-99-00.87 0.25 1.94
2-Butanone (MEK)10.2 ug/m3 12/21/19 00:20 78-93-35.8 0.72 1.94
Carbon disulfide 0.43J ug/m3 12/21/19 00:20 75-15-01.2 0.42 1.94
Carbon tetrachloride ND ug/m3 12/21/19 00:20 56-23-52.5 0.83 1.94
Chlorobenzene ND ug/m3 12/21/19 00:20 108-90-71.8 0.53 1.94
Chloroethane ND ug/m3 12/21/19 00:20 75-00-31.0 0.50 1.94
Chloroform ND ug/m3 12/21/19 00:20 67-66-30.96 0.38 1.94
Chloromethane ND ug/m3 12/21/19 00:20 74-87-30.81 0.30 1.94
Cyclohexane 1.0J ug/m3 12/21/19 00:20 110-82-73.4 0.68 1.94
Dibromochloromethane ND ug/m3 12/21/19 00:20 124-48-13.4 1.4 1.94
1,2-Dibromoethane (EDB)ND ug/m3 12/21/19 00:20 106-93-43.0 0.71 1.94
1,2-Dichlorobenzene ND ug/m3 12/21/19 00:20 95-50-12.4 0.97 1.94
1,3-Dichlorobenzene 2.1J ug/m3 12/21/19 00:20 541-73-12.4 1.1 1.94
1,4-Dichlorobenzene ND ug/m3 12/21/19 00:20 106-46-75.9 1.9 1.94
Dichlorodifluoromethane 2.8 ug/m3 12/21/19 00:20 75-71-82.0 0.57 1.94
1,1-Dichloroethane ND ug/m3 12/21/19 00:20 75-34-31.6 0.44 1.94
1,2-Dichloroethane ND ug/m3 12/21/19 00:20 107-06-20.80 0.29 1.94
1,1-Dichloroethene ND ug/m3 12/21/19 00:20 75-35-41.6 0.53 1.94
cis-1,2-Dichloroethene ND ug/m3 12/21/19 00:20 156-59-21.6 0.42 1.94
trans-1,2-Dichloroethene ND ug/m3 12/21/19 00:20 156-60-51.6 0.55 1.94
1,2-Dichloropropane ND ug/m3 12/21/19 00:20 78-87-51.8 0.45 1.94
cis-1,3-Dichloropropene ND ug/m3 12/21/19 00:20 10061-01-51.8 0.59 1.94
trans-1,3-Dichloropropene ND ug/m3 12/21/19 00:20 10061-02-61.8 0.85 1.94
Dichlorotetrafluoroethane ND ug/m3 12/21/19 00:20 76-14-22.8 0.85 1.94
Ethyl acetate 1.5 ug/m3 12/21/19 00:20 141-78-61.4 0.37 1.94
Ethylbenzene 1.5J ug/m3 12/21/19 00:20 100-41-41.7 0.59 1.94
4-Ethyltoluene ND ug/m3 12/21/19 00:20 622-96-84.8 1.1 1.94
n-Heptane ND ug/m3 12/21/19 00:20 142-82-51.6 0.74 1.94
Hexachloro-1,3-butadiene ND ug/m3 12/21/19 00:20 87-68-310.5 3.8 1.94
n-Hexane 2.8 ug/m3 12/21/19 00:20 110-54-31.4 0.60 1.94
2-Hexanone 1.7J ug/m3 12/21/19 00:20 591-78-68.1 1.4 1.94
Methylene Chloride 13.5 ug/m3 12/21/19 00:20 75-09-26.8 2.3 1.94
4-Methyl-2-pentanone (MIBK)1.2J ug/m3 12/21/19 00:20 108-10-18.1 1.0 1.94
Methyl-tert-butyl ether ND ug/m3 12/21/19 00:20 1634-04-47.1 1.3 1.94
Naphthalene 4.1J ug/m3 12/21/19 00:20 91-20-35.2 2.5 1.94
Propylene 1.1 ug/m3 12/21/19 00:20 115-07-10.68 0.27 1.94
Styrene 2.0 ug/m3 12/21/19 00:20 100-42-51.7 0.67 1.94
1,1,2,2-Tetrachloroethane ND ug/m3 12/21/19 00:20 79-34-52.7 0.60 1.94
Tetrachloroethene 1.0J ug/m3 12/21/19 00:20 127-18-41.3 0.61 1.94
Tetrahydrofuran ND ug/m3 12/21/19 00:20 109-99-91.2 0.51 1.94
Toluene 4.0 ug/m3 12/21/19 00:20 108-88-31.5 0.68 1.94
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 12/23/2019 11:51 AM
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Page 9 of 23
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92457567
BCP.145
Sample:SS-3 CAN#3095 Lab ID:92457567003 Collected:12/14/19 10:08 Received:12/16/19 12:39 Matrix:Air
Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit
Report
Analytical Method: TO-15TO15 MSV AIR
1,2,4-Trichlorobenzene ND ug/m3 12/21/19 00:20 120-82-114.6 7.2 1.94
1,1,1-Trichloroethane 1.3J ug/m3 12/21/19 00:20 71-55-62.2 0.60 1.94
1,1,2-Trichloroethane ND ug/m3 12/21/19 00:20 79-00-51.1 0.47 1.94
Trichloroethene ND ug/m3 12/21/19 00:20 79-01-61.1 0.49 1.94
Trichlorofluoromethane 1.2J ug/m3 12/21/19 00:20 75-69-42.2 0.71 1.94
1,1,2-Trichlorotrifluoroethane ND ug/m3 12/21/19 00:20 76-13-13.0 1.1 1.94
1,2,4-Trimethylbenzene 2.1 ug/m3 12/21/19 00:20 95-63-61.9 0.88 1.94
1,3,5-Trimethylbenzene 1.4J ug/m3 12/21/19 00:20 108-67-81.9 0.77 1.94
Vinyl acetate ND ug/m3 12/21/19 00:20 108-05-41.4 0.52 1.94
Vinyl chloride ND ug/m3 12/21/19 00:20 75-01-40.50 0.24 1.94
m&p-Xylene 3.8 ug/m3 12/21/19 00:20 179601-23-13.4 1.4 1.94
o-Xylene 1.4J ug/m3 12/21/19 00:20 95-47-61.7 0.67 1.94
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 12/23/2019 11:51 AM
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Page 10 of 23
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92457567
BCP.145
Sample:SS-4 CAN#2941 Lab ID:92457567004 Collected:12/14/19 11:00 Received:12/16/19 12:39 Matrix:Air
Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit
Report
Analytical Method: TO-15TO15 MSV AIR
Acetone 173 ug/m3 12/21/19 00:48 67-64-14.5 2.3 1.87
Benzene 16.6 ug/m3 12/21/19 00:48 71-43-20.61 0.29 1.87
Bromodichloromethane ND ug/m3 12/21/19 00:48 75-27-42.5 0.68 1.87
Bromoform ND ug/m3 12/21/19 00:48 75-25-29.8 2.7 1.87
Bromomethane ND ug/m3 12/21/19 00:48 74-83-91.5 0.42 1.87
1,3-Butadiene ND ug/m3 12/21/19 00:48 106-99-00.84 0.24 1.87
2-Butanone (MEK)15.7 ug/m3 12/21/19 00:48 78-93-35.6 0.69 1.87
Carbon disulfide 20.1 ug/m3 12/21/19 00:48 75-15-01.2 0.41 1.87
Carbon tetrachloride ND ug/m3 12/21/19 00:48 56-23-52.4 0.80 1.87
Chlorobenzene ND ug/m3 12/21/19 00:48 108-90-71.8 0.51 1.87
Chloroethane ND ug/m3 12/21/19 00:48 75-00-31.0 0.49 1.87
Chloroform 3.8 ug/m3 12/21/19 00:48 67-66-30.93 0.37 1.87
Chloromethane ND ug/m3 12/21/19 00:48 74-87-30.79 0.29 1.87
Cyclohexane 2.0J ug/m3 12/21/19 00:48 110-82-73.3 0.66 1.87
Dibromochloromethane ND ug/m3 12/21/19 00:48 124-48-13.2 1.3 1.87
1,2-Dibromoethane (EDB)ND ug/m3 12/21/19 00:48 106-93-42.9 0.68 1.87
1,2-Dichlorobenzene ND ug/m3 12/21/19 00:48 95-50-12.3 0.93 1.87
1,3-Dichlorobenzene 1.9J ug/m3 12/21/19 00:48 541-73-12.3 1.1 1.87
1,4-Dichlorobenzene ND ug/m3 12/21/19 00:48 106-46-75.7 1.9 1.87
Dichlorodifluoromethane 1.9J ug/m3 12/21/19 00:48 75-71-81.9 0.55 1.87
1,1-Dichloroethane 1.6 ug/m3 12/21/19 00:48 75-34-31.5 0.42 1.87
1,2-Dichloroethane ND ug/m3 12/21/19 00:48 107-06-20.77 0.28 1.87
1,1-Dichloroethene 31.3 ug/m3 12/21/19 00:48 75-35-41.5 0.51 1.87
cis-1,2-Dichloroethene ND ug/m3 12/21/19 00:48 156-59-21.5 0.41 1.87
trans-1,2-Dichloroethene ND ug/m3 12/21/19 00:48 156-60-51.5 0.53 1.87
1,2-Dichloropropane ND ug/m3 12/21/19 00:48 78-87-51.8 0.43 1.87
cis-1,3-Dichloropropene ND ug/m3 12/21/19 00:48 10061-01-51.7 0.57 1.87
trans-1,3-Dichloropropene ND ug/m3 12/21/19 00:48 10061-02-61.7 0.82 1.87
Dichlorotetrafluoroethane ND ug/m3 12/21/19 00:48 76-14-22.7 0.82 1.87
Ethyl acetate 1.2J ug/m3 12/21/19 00:48 141-78-61.4 0.36 1.87
Ethylbenzene 3.8 ug/m3 12/21/19 00:48 100-41-41.7 0.57 1.87
4-Ethyltoluene 2.0J ug/m3 12/21/19 00:48 622-96-84.7 1.1 1.87
n-Heptane 4.4 ug/m3 12/21/19 00:48 142-82-51.6 0.71 1.87
Hexachloro-1,3-butadiene ND ug/m3 12/21/19 00:48 87-68-310.1 3.7 1.87
n-Hexane 4.1 ug/m3 12/21/19 00:48 110-54-31.3 0.58 1.87
2-Hexanone 1.5J ug/m3 12/21/19 00:48 591-78-67.8 1.4 1.87
Methylene Chloride 13.5 ug/m3 12/21/19 00:48 75-09-26.6 2.3 1.87
4-Methyl-2-pentanone (MIBK)1.3J ug/m3 12/21/19 00:48 108-10-17.8 0.97 1.87
Methyl-tert-butyl ether ND ug/m3 12/21/19 00:48 1634-04-46.8 1.2 1.87
Naphthalene 23.8 ug/m3 12/21/19 00:48 91-20-35.0 2.4 1.87
Propylene 8.4 ug/m3 12/21/19 00:48 115-07-10.65 0.26 1.87
Styrene 2.3 ug/m3 12/21/19 00:48 100-42-51.6 0.64 1.87
1,1,2,2-Tetrachloroethane ND ug/m3 12/21/19 00:48 79-34-52.6 0.58 1.87
Tetrachloroethene 1.2J ug/m3 12/21/19 00:48 127-18-41.3 0.59 1.87
Tetrahydrofuran ND ug/m3 12/21/19 00:48 109-99-91.1 0.49 1.87
Toluene 25.9 ug/m3 12/21/19 00:48 108-88-31.4 0.66 1.87
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 12/23/2019 11:51 AM
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Page 11 of 23
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92457567
BCP.145
Sample:SS-4 CAN#2941 Lab ID:92457567004 Collected:12/14/19 11:00 Received:12/16/19 12:39 Matrix:Air
Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit
Report
Analytical Method: TO-15TO15 MSV AIR
1,2,4-Trichlorobenzene ND ug/m3 12/21/19 00:48 120-82-114.1 7.0 1.87
1,1,1-Trichloroethane 4.4 ug/m3 12/21/19 00:48 71-55-62.1 0.58 1.87
1,1,2-Trichloroethane ND ug/m3 12/21/19 00:48 79-00-51.0 0.45 1.87
Trichloroethene ND ug/m3 12/21/19 00:48 79-01-61.0 0.47 1.87
Trichlorofluoromethane 1.1J ug/m3 12/21/19 00:48 75-69-42.1 0.68 1.87
1,1,2-Trichlorotrifluoroethane ND ug/m3 12/21/19 00:48 76-13-12.9 1.1 1.87
1,2,4-Trimethylbenzene 4.2 ug/m3 12/21/19 00:48 95-63-61.9 0.85 1.87
1,3,5-Trimethylbenzene 2.8 ug/m3 12/21/19 00:48 108-67-81.9 0.75 1.87
Vinyl acetate ND ug/m3 12/21/19 00:48 108-05-41.3 0.50 1.87
Vinyl chloride ND ug/m3 12/21/19 00:48 75-01-40.49 0.24 1.87
m&p-Xylene 13.9 ug/m3 12/21/19 00:48 179601-23-13.3 1.3 1.87
o-Xylene 4.6 ug/m3 12/21/19 00:48 95-47-61.7 0.64 1.87
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 12/23/2019 11:51 AM
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[phone]
Page 12 of 23
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92457567
BCP.145
Sample:SS-DUP CAN#2626 Lab ID:92457567005 Collected:12/14/19 00:00 Received:12/16/19 12:39 Matrix:Air
Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit
Report
Analytical Method: TO-15TO15 MSV AIR
Acetone 180 ug/m3 12/21/19 01:14 67-64-14.7 2.3 1.94
Benzene 15.6 ug/m3 12/21/19 01:14 71-43-20.63 0.30 1.94
Bromodichloromethane ND ug/m3 12/21/19 01:14 75-27-42.6 0.71 1.94
Bromoform ND ug/m3 12/21/19 01:14 75-25-210.2 2.8 1.94
Bromomethane ND ug/m3 12/21/19 01:14 74-83-91.5 0.44 1.94
1,3-Butadiene ND ug/m3 12/21/19 01:14 106-99-00.87 0.25 1.94
2-Butanone (MEK)19.1 ug/m3 12/21/19 01:14 78-93-35.8 0.72 1.94
Carbon disulfide 20.3 ug/m3 12/21/19 01:14 75-15-01.2 0.42 1.94
Carbon tetrachloride ND ug/m3 12/21/19 01:14 56-23-52.5 0.83 1.94
Chlorobenzene ND ug/m3 12/21/19 01:14 108-90-71.8 0.53 1.94
Chloroethane ND ug/m3 12/21/19 01:14 75-00-31.0 0.50 1.94
Chloroform 3.7 ug/m3 12/21/19 01:14 67-66-30.96 0.38 1.94
Chloromethane 0.86 ug/m3 12/21/19 01:14 74-87-30.81 0.30 1.94
Cyclohexane 2.2J ug/m3 12/21/19 01:14 110-82-73.4 0.68 1.94
Dibromochloromethane ND ug/m3 12/21/19 01:14 124-48-13.4 1.4 1.94
1,2-Dibromoethane (EDB)ND ug/m3 12/21/19 01:14 106-93-43.0 0.71 1.94
1,2-Dichlorobenzene ND ug/m3 12/21/19 01:14 95-50-12.4 0.97 1.94
1,3-Dichlorobenzene ND ug/m3 12/21/19 01:14 541-73-12.4 1.1 1.94
1,4-Dichlorobenzene ND ug/m3 12/21/19 01:14 106-46-75.9 1.9 1.94
Dichlorodifluoromethane 2.1 ug/m3 12/21/19 01:14 75-71-82.0 0.57 1.94
1,1-Dichloroethane 1.6J ug/m3 12/21/19 01:14 75-34-31.6 0.44 1.94
1,2-Dichloroethane ND ug/m3 12/21/19 01:14 107-06-20.80 0.29 1.94
1,1-Dichloroethene 30.3 ug/m3 12/21/19 01:14 75-35-41.6 0.53 1.94
cis-1,2-Dichloroethene ND ug/m3 12/21/19 01:14 156-59-21.6 0.42 1.94
trans-1,2-Dichloroethene ND ug/m3 12/21/19 01:14 156-60-51.6 0.55 1.94
1,2-Dichloropropane ND ug/m3 12/21/19 01:14 78-87-51.8 0.45 1.94
cis-1,3-Dichloropropene ND ug/m3 12/21/19 01:14 10061-01-51.8 0.59 1.94
trans-1,3-Dichloropropene ND ug/m3 12/21/19 01:14 10061-02-61.8 0.85 1.94
Dichlorotetrafluoroethane ND ug/m3 12/21/19 01:14 76-14-22.8 0.85 1.94
Ethyl acetate 1.3J ug/m3 12/21/19 01:14 141-78-61.4 0.37 1.94
Ethylbenzene 3.7 ug/m3 12/21/19 01:14 100-41-41.7 0.59 1.94
4-Ethyltoluene 2.1J ug/m3 12/21/19 01:14 622-96-84.8 1.1 1.94
n-Heptane 4.2 ug/m3 12/21/19 01:14 142-82-51.6 0.74 1.94
Hexachloro-1,3-butadiene ND ug/m3 12/21/19 01:14 87-68-310.5 3.8 1.94
n-Hexane 4.5 ug/m3 12/21/19 01:14 110-54-31.4 0.60 1.94
2-Hexanone 2.2J ug/m3 12/21/19 01:14 591-78-68.1 1.4 1.94
Methylene Chloride 18.2 ug/m3 12/21/19 01:14 75-09-26.8 2.3 1.94
4-Methyl-2-pentanone (MIBK)2.1J ug/m3 12/21/19 01:14 108-10-18.1 1.0 1.94
Methyl-tert-butyl ether ND ug/m3 12/21/19 01:14 1634-04-47.1 1.3 1.94
Naphthalene 20.5 ug/m3 12/21/19 01:14 91-20-35.2 2.5 1.94
Propylene 8.8 ug/m3 12/21/19 01:14 115-07-10.68 0.27 1.94
Styrene 2.4 ug/m3 12/21/19 01:14 100-42-51.7 0.67 1.94
1,1,2,2-Tetrachloroethane ND ug/m3 12/21/19 01:14 79-34-52.7 0.60 1.94
Tetrachloroethene 1.2J ug/m3 12/21/19 01:14 127-18-41.3 0.61 1.94
Tetrahydrofuran ND ug/m3 12/21/19 01:14 109-99-91.2 0.51 1.94
Toluene 26.2 ug/m3 12/21/19 01:14 108-88-31.5 0.68 1.94
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 12/23/2019 11:51 AM
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Page 13 of 23
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92457567
BCP.145
Sample:SS-DUP CAN#2626 Lab ID:92457567005 Collected:12/14/19 00:00 Received:12/16/19 12:39 Matrix:Air
Parameters Results Units DF Prepared Analyzed CAS No.QualMDLLimit
Report
Analytical Method: TO-15TO15 MSV AIR
1,2,4-Trichlorobenzene ND ug/m3 12/21/19 01:14 120-82-114.6 7.2 1.94
1,1,1-Trichloroethane 4.3 ug/m3 12/21/19 01:14 71-55-62.2 0.60 1.94
1,1,2-Trichloroethane ND ug/m3 12/21/19 01:14 79-00-51.1 0.47 1.94
Trichloroethene ND ug/m3 12/21/19 01:14 79-01-61.1 0.49 1.94
Trichlorofluoromethane 1.0J ug/m3 12/21/19 01:14 75-69-42.2 0.71 1.94
1,1,2-Trichlorotrifluoroethane ND ug/m3 12/21/19 01:14 76-13-13.0 1.1 1.94
1,2,4-Trimethylbenzene 4.0 ug/m3 12/21/19 01:14 95-63-61.9 0.88 1.94
1,3,5-Trimethylbenzene 2.8 ug/m3 12/21/19 01:14 108-67-81.9 0.77 1.94
Vinyl acetate ND ug/m3 12/21/19 01:14 108-05-41.4 0.52 1.94
Vinyl chloride ND ug/m3 12/21/19 01:14 75-01-40.50 0.24 1.94
m&p-Xylene 13.3 ug/m3 12/21/19 01:14 179601-23-13.4 1.4 1.94
o-Xylene 4.3 ug/m3 12/21/19 01:14 95-47-61.7 0.67 1.94
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 12/23/2019 11:51 AM
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Page 14 of 23
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92457567
BCP.145
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
QC Batch:
QC Batch Method:
Analysis Method:
Analysis Description:
651237
TO-15
TO-15
TO15 MSV AIR Low Level
Associated Lab Samples:92457567001, 92457567002, 92457567003, 92457567004, 92457567005
Parameter Units
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK:3501999
Associated Lab Samples:92457567001, 92457567002, 92457567003, 92457567004, 92457567005
Matrix:Air
AnalyzedMDL
1,1,1-Trichloroethane ug/m3 ND 1.1 12/20/19 11:230.31
1,1,2,2-Tetrachloroethane ug/m3 ND 1.4 MN12/20/19 11:230.31
1,1,2-Trichloroethane ug/m3 ND 0.56 12/20/19 11:230.24
1,1,2-Trichlorotrifluoroethane ug/m3 ND 1.6 12/20/19 11:230.56
1,1-Dichloroethane ug/m3 ND 0.82 12/20/19 11:230.22
1,1-Dichloroethene ug/m3 ND 0.81 12/20/19 11:230.27
1,2,4-Trichlorobenzene ug/m3 ND 7.5 12/20/19 11:233.7
1,2,4-Trimethylbenzene ug/m3 ND 1.0 12/20/19 11:230.45
1,2-Dibromoethane (EDB)ug/m3 ND 1.6 MN12/20/19 11:230.37
1,2-Dichlorobenzene ug/m3 ND 1.2 12/20/19 11:230.50
1,2-Dichloroethane ug/m3 ND 0.41 12/20/19 11:230.15
1,2-Dichloropropane ug/m3 ND 0.94 12/20/19 11:230.23
1,3,5-Trimethylbenzene ug/m3 ND 1.0 12/20/19 11:230.40
1,3-Butadiene ug/m3 ND 0.45 12/20/19 11:230.13
1,3-Dichlorobenzene ug/m3 ND 1.2 12/20/19 11:230.58
1,4-Dichlorobenzene ug/m3 ND 3.1 12/20/19 11:231.0
2-Butanone (MEK)ug/m3 ND 3.0 12/20/19 11:230.37
2-Hexanone ug/m3 ND 4.2 12/20/19 11:230.74
4-Ethyltoluene ug/m3 ND 2.5 12/20/19 11:230.57
4-Methyl-2-pentanone (MIBK)ug/m3 ND 4.2 12/20/19 11:230.52
Acetone ug/m3 ND 2.4 12/20/19 11:231.2
Benzene ug/m3 ND 0.32 12/20/19 11:230.15
Bromodichloromethane ug/m3 ND 1.4 12/20/19 11:230.37
Bromoform ug/m3 ND 5.2 12/20/19 11:231.4
Bromomethane ug/m3 ND 0.79 12/20/19 11:230.23
Carbon disulfide ug/m3 ND 0.63 12/20/19 11:230.22
Carbon tetrachloride ug/m3 ND 1.3 12/20/19 11:230.43
Chlorobenzene ug/m3 ND 0.94 12/20/19 11:230.28
Chloroethane ug/m3 ND 0.54 12/20/19 11:230.26
Chloroform ug/m3 ND 0.50 12/20/19 11:230.20
Chloromethane ug/m3 ND 0.42 12/20/19 11:230.16
cis-1,2-Dichloroethene ug/m3 ND 0.81 12/20/19 11:230.22
cis-1,3-Dichloropropene ug/m3 ND 0.92 12/20/19 11:230.30
Cyclohexane ug/m3 ND 1.8 12/20/19 11:230.35
Dibromochloromethane ug/m3 ND 1.7 12/20/19 11:230.72
Dichlorodifluoromethane ug/m3 ND 1.0 12/20/19 11:230.29
Dichlorotetrafluoroethane ug/m3 ND 1.4 12/20/19 11:230.44
Ethyl acetate ug/m3 ND 0.73 12/20/19 11:230.19
Ethylbenzene ug/m3 ND 0.88 12/20/19 11:230.30
Hexachloro-1,3-butadiene ug/m3 ND 5.4 12/20/19 11:232.0
m&p-Xylene ug/m3 ND 1.8 12/20/19 11:230.70
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 12/23/2019 11:51 AM
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Page 15 of 23
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92457567
BCP.145
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK:3501999
Associated Lab Samples:92457567001, 92457567002, 92457567003, 92457567004, 92457567005
Matrix:Air
AnalyzedMDL
Methyl-tert-butyl ether ug/m3 ND 3.7 12/20/19 11:230.66
Methylene Chloride ug/m3 ND 3.5 12/20/19 11:231.2
n-Heptane ug/m3 ND 0.83 12/20/19 11:230.38
n-Hexane ug/m3 ND 0.72 12/20/19 11:230.31
Naphthalene ug/m3 ND 2.7 12/20/19 11:231.3
o-Xylene ug/m3 ND 0.88 12/20/19 11:230.34
Propylene ug/m3 ND 0.35 12/20/19 11:230.14
Styrene ug/m3 ND 0.87 12/20/19 11:230.34
Tetrachloroethene ug/m3 ND 0.69 12/20/19 11:230.31
Tetrahydrofuran ug/m3 ND 0.60 12/20/19 11:230.26
Toluene ug/m3 ND 0.77 12/20/19 11:230.35
trans-1,2-Dichloroethene ug/m3 ND 0.81 12/20/19 11:230.28
trans-1,3-Dichloropropene ug/m3 ND 0.92 12/20/19 11:230.44
Trichloroethene ug/m3 ND 0.55 12/20/19 11:230.25
Trichlorofluoromethane ug/m3 ND 1.1 12/20/19 11:230.37
Vinyl acetate ug/m3 ND 0.72 12/20/19 11:230.27
Vinyl chloride ug/m3 ND 0.26 12/20/19 11:230.13
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
3502000LABORATORY CONTROL SAMPLE:
LCSSpike
1,1,1-Trichloroethane ug/m3 59.455.5 107 70-130
1,1,2,2-Tetrachloroethane ug/m3 79.769.8 114 70-132
1,1,2-Trichloroethane ug/m3 62.055.5 112 70-130
1,1,2-Trichlorotrifluoroethane ug/m3 81.077.9 104 70-130
1,1-Dichloroethane ug/m3 44.341.1 108 70-130
1,1-Dichloroethene ug/m3 43.240.3 107 70-130
1,2,4-Trichlorobenzene ug/m3 71.575.4 95 56-130
1,2,4-Trimethylbenzene ug/m3 57.150 114 70-134
1,2-Dibromoethane (EDB)ug/m3 89.378.1 114 70-130
1,2-Dichlorobenzene ug/m3 68.161.1 111 70-132
1,2-Dichloroethane ug/m3 45.441.1 110 70-130
1,2-Dichloropropane ug/m3 52.347 111 70-130
1,3,5-Trimethylbenzene ug/m3 56.950 114 70-132
1,3-Butadiene ug/m3 26.522.5 118 65-130
1,3-Dichlorobenzene ug/m3 68.661.1 112 70-137
1,4-Dichlorobenzene ug/m3 67.961.1 111 70-134
2-Butanone (MEK)ug/m3 30.630 102 70-130
2-Hexanone ug/m3 49.641.6 119 70-135
4-Ethyltoluene ug/m3 56.550 113 70-138
4-Methyl-2-pentanone (MIBK)ug/m3 49.141.6 118 70-131
Acetone ug/m3 120121 100 67-130
Benzene ug/m3 35.432.5 109 70-130
Bromodichloromethane ug/m3 75.768.1 111 70-130
REPORT OF LABORATORY ANALYSIS
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#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92457567
BCP.145
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
3502000LABORATORY CONTROL SAMPLE:
LCSSpike
Bromoform ug/m3 120105 114 70-132
Bromomethane ug/m3 45.039.5 114 69-130
Carbon disulfide ug/m3 33.531.6 106 56-137
Carbon tetrachloride ug/m3 72.864 114 66-131
Chlorobenzene ug/m3 53.146.8 114 70-130
Chloroethane ug/m3 31.826.8 118 70-130
Chloroform ug/m3 52.549.6 106 70-130
Chloromethane ug/m3 23.821 113 66-130
cis-1,2-Dichloroethene ug/m3 44.040.3 109 70-130
cis-1,3-Dichloropropene ug/m3 55.746.1 121 70-133
Cyclohexane ug/m3 43.435 124 68-132
Dibromochloromethane ug/m3 99.486.6 115 70-130
Dichlorodifluoromethane ug/m3 53.350.3 106 70-130
Dichlorotetrafluoroethane ug/m3 79.871 112 70-130
Ethyl acetate ug/m3 41.936.6 114 69-130
Ethylbenzene ug/m3 50.344.1 114 67-131
Hexachloro-1,3-butadiene ug/m3 113108 104 66-137
m&p-Xylene ug/m3 10188.3 115 70-132
Methyl-tert-butyl ether ug/m3 41.836.6 114 70-130
Methylene Chloride ug/m3 216177 122 65-130
n-Heptane ug/m3 48.041.7 115 65-130
n-Hexane ug/m3 40.635.8 113 66-130
Naphthalene ug/m3 53.853.3 101 56-130
o-Xylene ug/m3 50.744.1 115 70-130
Propylene ug/m3 19.717.5 112 67-130
Styrene ug/m3 48.943.3 113 69-136
Tetrachloroethene ug/m3 75.468.9 109 70-130
Tetrahydrofuran ug/m3 36.230 121 68-131
Toluene ug/m3 46.138.3 120 70-130
trans-1,2-Dichloroethene ug/m3 42.640.3 106 70-130
trans-1,3-Dichloropropene ug/m3 53.146.1 115 70-134
Trichloroethene ug/m3 59.054.6 108 70-130
Trichlorofluoromethane ug/m3 64.857.1 113 65-130
Vinyl acetate ug/m3 45.135.8 126 61-133
Vinyl chloride ug/m3 29.526 114 70-130
Parameter Units
Dup
Result
Max
RPD QualifiersRPDResult
10502634006
3502721SAMPLE DUPLICATE:
1,1,1-Trichloroethane ug/m3 ND 25ND
1,1,2,2-Tetrachloroethane ug/m3 ND 25ND
1,1,2-Trichloroethane ug/m3 ND 25ND
1,1,2-Trichlorotrifluoroethane ug/m3 ND 25ND
1,1-Dichloroethane ug/m3 ND 25ND
1,1-Dichloroethene ug/m3 ND 25ND
REPORT OF LABORATORY ANALYSIS
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Page 17 of 23
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92457567
BCP.145
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
Dup
Result
Max
RPD QualifiersRPDResult
10502634006
3502721SAMPLE DUPLICATE:
1,2,4-Trichlorobenzene ug/m3 ND 25ND
1,2,4-Trimethylbenzene ug/m3 7.6 1 257.5
1,2-Dibromoethane (EDB)ug/m3 ND 25ND
1,2-Dichlorobenzene ug/m3 ND 25ND
1,2-Dichloroethane ug/m3 ND 25ND
1,2-Dichloropropane ug/m3 ND 25ND
1,3,5-Trimethylbenzene ug/m3 2.4 2 252.4
1,3-Butadiene ug/m3 ND 25ND
1,3-Dichlorobenzene ug/m3 3.6 0 253.7
1,4-Dichlorobenzene ug/m3 ND 25ND
2-Butanone (MEK)ug/m3 1.8J 25ND
2-Hexanone ug/m3 ND 25ND
4-Ethyltoluene ug/m3 1.9J 25ND
4-Methyl-2-pentanone (MIBK)ug/m3 ND 25ND
Acetone ug/m3 30.2 3 2529.4
Benzene ug/m3 0.41J 25ND
Bromodichloromethane ug/m3 ND 25ND
Bromoform ug/m3 ND 25ND
Bromomethane ug/m3 ND 25ND
Carbon disulfide ug/m3 ND 25ND
Carbon tetrachloride ug/m3 ND 25ND
Chlorobenzene ug/m3 ND 25ND
Chloroethane ug/m3 ND 25ND
Chloroform ug/m3 ND 25ND
Chloromethane ug/m3 ND 25ND
cis-1,2-Dichloroethene ug/m3 ND 25ND
cis-1,3-Dichloropropene ug/m3 ND 25ND
Cyclohexane ug/m3 1.3J 25ND
Dibromochloromethane ug/m3 ND 25ND
Dichlorodifluoromethane ug/m3 1.6 3 251.7
Dichlorotetrafluoroethane ug/m3 ND 25ND
Ethyl acetate ug/m3 ND 25ND
Ethylbenzene ug/m3 1.0J 25ND
Hexachloro-1,3-butadiene ug/m3 ND 25ND
m&p-Xylene ug/m3 2.2J 25ND
Methyl-tert-butyl ether ug/m3 ND 25ND
Methylene Chloride ug/m3 53.7 2 2552.8
n-Heptane ug/m3 ND 25ND
n-Hexane ug/m3 6.4 3 256.2
Naphthalene ug/m3 3.3J 25ND
o-Xylene ug/m3 0.86J 25ND
Propylene ug/m3 0.75 25ND
Styrene ug/m3 ND 25ND
Tetrachloroethene ug/m3 16.1 1 2515.9
Tetrahydrofuran ug/m3 0.57J 25ND
Toluene ug/m3 1.1J 25ND
trans-1,2-Dichloroethene ug/m3 ND 25ND
REPORT OF LABORATORY ANALYSIS
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[phone]
Page 18 of 23
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92457567
BCP.145
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
Dup
Result
Max
RPD QualifiersRPDResult
10502634006
3502721SAMPLE DUPLICATE:
trans-1,3-Dichloropropene ug/m3 ND 25ND
Trichloroethene ug/m3 ND 25ND
Trichlorofluoromethane ug/m3 1.1J 25ND
Vinyl acetate ug/m3 ND 25ND
Vinyl chloride ug/m3 ND 25ND
Parameter Units
Dup
Result
Max
RPD QualifiersRPDResult
10503403001
3502722SAMPLE DUPLICATE:
1,1,1-Trichloroethane ug/m3 ND 25<0.51
1,1,2,2-Tetrachloroethane ug/m3 ND 25<0.51
1,1,2-Trichloroethane ug/m3 ND 25<0.40
1,1,2-Trichlorotrifluoroethane ug/m3 ND 25<0.92
1,1-Dichloroethane ug/m3 ND 25<0.37
1,1-Dichloroethene ug/m3 ND 25<0.45
1,2,4-Trichlorobenzene ug/m3 ND 25<6.1
1,2,4-Trimethylbenzene ug/m3 1.7 2 251.8
1,2-Dibromoethane (EDB)ug/m3 ND 25<0.60
1,2-Dichlorobenzene ug/m3 ND 25<0.82
1,2-Dichloroethane ug/m3 ND 25<0.25
1,2-Dichloropropane ug/m3 ND 25<0.38
1,3,5-Trimethylbenzene ug/m3 ND 251.2J
1,3-Butadiene ug/m3 ND 25<0.21
1,3-Dichlorobenzene ug/m3 ND 25<0.95
1,4-Dichlorobenzene ug/m3 ND 25<1.6
2-Butanone (MEK)ug/m3 2.0J 252.0J
2-Hexanone ug/m3 ND 25<1.2
4-Ethyltoluene ug/m3 ND 25<0.93
4-Methyl-2-pentanone (MIBK)ug/m3 0.93J 250.93J
Acetone ug/m3 26.5 2 2526.1
Benzene ug/m3 3.5 1 253.6
Bromodichloromethane ug/m3 ND 25<0.60
Bromoform ug/m3 ND 25<2.3
Bromomethane ug/m3 ND 25<0.37
Carbon disulfide ug/m3 ND 25<0.36
Carbon tetrachloride ug/m3 ND 25<0.70
Chlorobenzene ug/m3 ND 25<0.45
Chloroethane ug/m3 ND 25<0.43
Chloroform ug/m3 1.2 0 251.2
Chloromethane ug/m3 1.3 R147250.80
cis-1,2-Dichloroethene ug/m3 ND 25<0.36
cis-1,3-Dichloropropene ug/m3 ND 25<0.50
Cyclohexane ug/m3 ND 252.9
Dibromochloromethane ug/m3 ND 25<1.2
Dichlorodifluoromethane ug/m3 1.8 6 251.9
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 12/23/2019 11:51 AM
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9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 19 of 23
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92457567
BCP.145
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
Dup
Result
Max
RPD QualifiersRPDResult
10503403001
3502722SAMPLE DUPLICATE:
Dichlorotetrafluoroethane ug/m3 ND 25<0.72
Ethyl acetate ug/m3 1.1J 251.1J
Ethylbenzene ug/m3 1.8 0 251.8
Hexachloro-1,3-butadiene ug/m3 ND 25<3.2
m&p-Xylene ug/m3 4.1 2 254.2
Methyl-tert-butyl ether ug/m3 ND 25<1.1
Methylene Chloride ug/m3 7.2 2 257.4
n-Heptane ug/m3 1.9 1 252.0
n-Hexane ug/m3 3.1 1 253.1
Naphthalene ug/m3 ND 25<2.1
o-Xylene ug/m3 1.5 1 251.5
Propylene ug/m3 ND 25<0.23
Styrene ug/m3 1.5 0 251.5
Tetrachloroethene ug/m3 ND 25<0.51
Tetrahydrofuran ug/m3 ND 25<0.43
Toluene ug/m3 6.5 0 256.6
trans-1,2-Dichloroethene ug/m3 ND 25<0.47
trans-1,3-Dichloropropene ug/m3 ND 25<0.72
Trichloroethene ug/m3 ND 25<0.41
Trichlorofluoromethane ug/m3 2.1 6 252.0
Vinyl acetate ug/m3 ND 25<0.44
Vinyl chloride ug/m3 ND 25<0.21
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC.Date: 12/23/2019 11:51 AM
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[phone]
Page 20 of 23
#=QL#
QUALIFIERS
Pace Project No.:
Project:
92457567
BCP.145
DEFINITIONS
DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot.
ND - Not Detected at or above adjusted reporting limit.
TNTC - Too Numerous To Count
J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.
MDL - Adjusted Method Detection Limit.
PQL - Practical Quantitation Limit.
RL - Reporting Limit - The lowest concentration value that meets project requirements for quantitative data with known precision and
bias for a specific analyte in a specific matrix.
S - Surrogate
1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte is
a combined concentration.
Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values.
LCS(D) - Laboratory Control Sample (Duplicate)
MS(D) - Matrix Spike (Duplicate)
DUP - Sample Duplicate
RPD - Relative Percent Difference
NC - Not Calculable.
SG - Silica Gel - Clean-Up
U - Indicates the compound was analyzed for, but not detected.
Acid preservation may not be appropriate for 2 Chloroethylvinyl ether.
A separate vial preserved to a pH of 4-5 is recommended in SW846 Chapter 4 for the analysis of Acrolein and Acrylonitrile by EPA
Method 8260.
N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for
each analyte is a combined concentration.
Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes.
TNI - The NELAC Institute.
LABORATORIES
Pace Analytical Services - MinneapolisPASI-M
ANALYTE QUALIFIERS
The reporting limit has been raised in accordance with Minnesota Statutes 4740.2100 Subpart 8. C, D. Reporting Limit
Evaluation Rule.MN
RPD value was outside control limits.R1
REPORT OF LABORATORY ANALYSIS
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[phone]
Page 21 of 23
#=CR#
QUALITY CONTROL DATA CROSS REFERENCE TABLE
Pace Project No.:
Project:
92457567
BCP.145
Lab ID Sample ID QC Batch Method QC Batch Analytical Method
Analytical
Batch
92457567001 651237SS-1 CAN#2211 TO-15
92457567002 651237SS-2 CAN#2080 TO-15
92457567003 651237SS-3 CAN#3095 TO-15
92457567004 651237SS-4 CAN#2941 TO-15
92457567005 651237SS-DUP CAN#2626 TO-15
REPORT OF LABORATORY ANALYSIS
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Page 22 of 23
Page 23 of 23
12/17/19
Rn_Hart&Hickman_20191216.xls 12/18/192:22 PM
Radon Analysis (EPA Method GS: Grab Sample/Scintillation Cell counting)
For Hart & Hickman Client Project Number: BCP.145
Sampler: Sean Horgan Sample Dates:12/14/19
Sample containers: Tedlar bagsSite: Charlotte, NC Assumed Site Pressure 0.97 atm
Analyst: Doug Hammond based on an elevation of 761 ft
Phone: [phone] Time Zone adjustment: add to decay time
email: [e-mail] 3 hours Collect (EST)Run (PST)
Gas Sample Summary
Collection Analysis Lab DuplicatesIDDatetimeDatetimeVol run Conc.±1 sig mean ±1ssd Notes
(EST)(PST)(cc)pCi/L pCi/L pCi/L pCi/L
Received 12/16/19
1 IAR-1 12/14/19 8:05 12/16/19 12:54 120 0.80 0.09
2 IAR-2 12/14/19 8:10 12/16/19 12:47 60 0.31 0.09 Bag valve had slight leak, but result ok
Lab Duplicate 12/14/19 8:10 12/17/19 15:52 22 0.37 0.25 Repeat analysis is consistent
3 IAR-3 12/14/19 8:15 12/16/19 12:59 120 0.65 0.094IAR-4 12/14/19 8:20 12/16/19 13:02 120 0.88 0.09
5 IAR-DUP 12/14/19 8:15 12/16/19 13:06 60 0.64 0.10 **assume collection time
6 SSR-1 12/14/19 8:50 12/16/19 12:38 40 731 39
7 SSR-2 12/14/19 9:20 12/16/19 12:39 40 1283 75 1244 56
Lab Duplicate 12/14/19 9:20 12/17/19 11:53 40 1204 63
8 SSR-3 12/14/19 9:55 12/17/19 11:56 40 1741 89
9 SSR-4 12/14/19 10:35 12/17/19 12:00 40 1015 53 1024 13Lab Duplicate 12/14/19 10:35 12/17/19 12:01 40 1034 54
10 SSR-DUP 12/14/19 9:45 12/17/19 12:03 40 1049 55 **assume collection time
**Sample time was not supplied for the DUP samples, so collection time was assumed based on time range for others on same date. This introduces uncertainty of ~2%.
Uncertainty given in pCi/liter is based on counting statistics and combined uncertainty of ±5% in cell calibration and volume analyzed.The Lower Limit of Detection for Rn (95% confidence level as recommended by EPA 402-R-95-012, Oct. 97) is 0.14 pCi/liter.Results are reported based on standardization with NIST-traceable radon sources. These results are for application of naturally-occurring radon as a tracer of soil vapor intrusion, but are not intended for evaluation of radon hazards.Results corrected to in situ pressure as noted aboveNote Details: none
Raw Data, Calculation factors, and Analytical Details
Collection Analysis countSample ID Date Time Date Time Count in He Air/He Vol run Press obs sig Decay T Decay Concentration stats(EST)(PST)cell/ch eff eff (cc)factor dpm dpm (hours)factor dpm/liter pCi/liter pCi/liter Notes±1 sig
Received 12/16/191IAR-1 12/14/19 8:05 12/16/19 12:54 84/11 0.730 0.96 120 0.97 0.10 0.01 55.8 1.524 1.78 0.80 0.082IAR-2 12/14/19 8:10 12/16/19 12:47 76/22 0.909 0.98 60 0.97 0.03 0.01 55.6 1.522 0.69 0.31 0.09Lab Duplicate 12/14/19 8:10 12/17/19 15:52 72/34 0.920 0.98 22 0.97 0.01 0.01 82.7 1.868 0.82 0.37 0.253IAR-3 12/14/19 8:15 12/16/19 12:59 82/32 0.679 0.96 120 0.97 0.08 0.01 55.7 1.524 1.44 0.65 0.09
4 IAR-4 12/14/19 8:20 12/16/19 13:02 81/31 0.760 0.96 120 0.97 0.12 0.01 55.7 1.523 1.96 0.88 0.08
5 IAR-DUP 12/14/19 8:15 12/16/19 13:06 72/34 0.920 0.98 60 0.97 0.05 0.01 55.9 1.525 1.42 0.64 0.10
6 SSR-1 12/14/19 8:50 12/16/19 12:38 SC6/34 0.751 0.99 40 0.97 32.88 0.60 54.8 1.513 1622 731 13
7 SSR-2 12/14/19 9:20 12/16/19 12:39 61/33 0.790 0.99 40 0.97 60.96 1.81 54.3 1.507 2849 1283 38
Lab Duplicate 12/14/19 9:20 12/17/19 11:53 Z13/22 0.706 0.99 40 0.97 42.90 0.63 77.6 1.796 2674 1204 18
8 SSR-3 12/14/19 9:55 12/17/19 11:56 59/11 0.930 0.99 40 0.97 82.02 0.87 77.0 1.789 3865 1741 18
9 SSR-4 12/14/19 10:35 12/17/19 12:00 68/32 0.876 0.99 40 0.97 45.25 0.64 76.4 1.781 2254 1015 14
Lab Duplicate 12/14/19 10:35 12/17/19 12:01 58/31 0.900 0.99 40 0.97 47.34 0.66 76.4 1.781 2295 1034 1410SSR-DUP 12/14/19 9:45 12/17/19 12:03 61/33 0.790 0.99 40 0.97 41.90 0.62 77.3 1.793 2330 1049 16
Decay correctiions based on Rn decay constant of 0.1813 per day Radon Conc = {(0.4504)(1000)(obs dpm)(decay factor)(Press factor)}/{(cc used)(He eff)(Air/He)}Conversion from dpm based on 0.4504 pCi/dpm (in pCi/liter)Blanks are negligible.
Definitions:Cell/ch:Counting cell and channel used sig dpm uncertainty (± 1 sig) in dpm based on counting statisticsHe eff:Cell and counter efficiency using helium matrix Decay T:time elapsed from sampling to analysisAir/He:Correction for matrix counting gas density Decay factor:Correction factor for decay from collection to analysisSample vol:Volume analyzed (cc)dpm/liter:Radon concentration in disintigrations per minute per liter of samplePress factor:Correction to in situ pressure based on collection altitude pCi/liter:Radon concentration in picoCuries per literobs dpm:observed radon activity (disintigrations per minute) when analyzed count stats:uncertainty in observed radon based on counting statistics

Appendix B

DEQ Risk Calculator
Version Date:
Basis:
Site Name:
Site Address:
DEQ Section:
Site ID:
Exposure Unit ID:
Submittal Date:
Reviewed By:
Sub-Slab Soil Vapor Worst-Case
North Carolina Department of Environmental Quality
Risk Calculator
Kroehler Manufacturing
3412 Monroe Road
BCP-145
December 2019
November 2019 EPA RSL Table
1/3/2020
Prepared By:AEM
RWM
North Carolina DEQ Risk Calculator
Table of Contents
Version Date: December 2019
Basis: November 2019 EPA RSL Table
Site ID: BCP-145
Exposure Unit ID: Sub-Slab Soil Vapor 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 to 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: December 2019
Basis: November 2019 EPA RSL Table
Site ID: BCP-145
Exposure Unit ID: Sub-Slab Soil Vapor 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: December 2019Basis: November 2019 EPA RSL TableSite ID: BCP-145Exposure Unit ID: Sub-Slab Soil Vapor Worst-CaseDescription of Exposure Point Concentration Selection: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.Exposure Point Concentration (ug/m3)Notes: CAS Number ChemicalMinimum Concentration (Qualifier)Maximum Concentration (Qualifier)UnitsLocation of Maximum ConcentrationDetection FrequencyRange of Detection LimitsConcentration Used for ScreeningBackground ValueScreening Toxicity Value (Screening Level) (n/c)Potential ARAR/TBC ValuePotential ARAR/TBC SourceCOPC Flag (Y/N)Rationale for Selection or Deletion180 67-64-1 Acetoneug/m316.6 71-43-2 Benzeneug/m320.3 75-15-0 Carbon Disulfideug/m33.8 67-66-3 Chloroformug/m31.5 74-87-3 Chloromethaneug/m32.4 110-82-7 Cyclohexaneug/m33.1 75-71-8 Dichlorodifluoromethaneug/m31.6 75-34-3 Dichloroethane, 1,1-ug/m331.3 75-35-4 Dichloroethylene, 1,1-ug/m32.2 141-78-6 Ethyl Acetateug/m33.8 100-41-4 Ethylbenzeneug/m34.4 142-82-5 Heptane, N-ug/m38.3 110-54-3 Hexane, N-ug/m32.2 591-78-6 Hexanone, 2-ug/m319.1 78-93-3 Methyl Ethyl Ketone (2-Butanone)ug/m32.9 108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone)ug/m318.5 75-09-2 Methylene Chlorideug/m323.8 91-20-3 ~Naphthaleneug/m38.8 115-07-1 Propyleneug/m32.4 100-42-5 Styreneug/m31.2 127-18-4 Tetrachloroethyleneug/m326.2 108-88-3 Tolueneug/m34.4 71-55-6 Trichloroethane, 1,1,1-ug/m31.3 75-69-4 Trichlorofluoromethaneug/m34.2 95-63-6 Trimethylbenzene, 1,2,4-ug/m32.8 108-67-8 Trimethylbenzene, 1,3,5-ug/m317.9 1330-20-7 Xylenesug/m3Input Form 2DSoil Gas Exposure Point Concentration TableNorth Carolina DEQ Risk Calculator
Risk for Individual Pathways Output Form 1A
Version Date: December 2019
Basis: November 2019 EPA RSL Table
Site ID: BCP-145
Exposure Unit ID: Sub-Slab Soil Vapor 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 1.0E-05 2.6E-01 NO
Indoor Air NC NC NC
Groundwater to Indoor Air NC NC NC
Soil Gas to Indoor Air 7.7E-07 2.0E-02 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 complete
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 - Resident Soil Gas to Indoor Air
Version Date: December 2019
Basis: November 2019 EPA RSL Table
Site ID: BCP-145
Exposure Unit ID: Sub-Slab Soil Vapor 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 180 5.4 - 6.5E+03 1.7E-04
71-43-2 Benzene 16.6 0.498 3.6E-01 6.3E+00 1.4E-06 1.6E-02
75-15-0 Carbon Disulfide 20.3 0.609 - 1.5E+02 8.3E-04
110-82-7 Cyclohexane 2.4 0.072 - 1.3E+03 1.2E-05
75-71-8 Dichlorodifluoromethane 3.1 0.093 - 2.1E+01 8.9E-04
141-78-6 Ethyl Acetate 2.2 0.066 - 1.5E+01 9.0E-04
100-41-4 Ethylbenzene 3.8 0.114 1.1E+00 2.1E+02 1.0E-07 1.1E-04
110-54-3 Hexane, N- 8.3 0.249 - 1.5E+02 3.4E-04
591-78-6 Hexanone, 2- 2.2 0.066 - 6.3E+00 2.1E-03
78-93-3 Methyl Ethyl Ketone (2-Butanone) 19.1 0.573 - 1.0E+03 1.1E-04
108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone) 2.9 0.087 - 6.3E+02 2.8E-05
75-09-2 Methylene Chloride 18.5 0.555 1.0E+02 1.3E+02 5.5E-09 8.9E-04
91-20-3 ~Naphthalene 23.8 0.714 8.3E-02 6.3E-01 8.6E-06 2.3E-01
115-07-1 Propylene 8.8 0.264 - 6.3E+02 8.4E-05
100-42-5 Styrene 2.4 0.072 - 2.1E+02 6.9E-05
127-18-4 Tetrachloroethylene 1.2 0.036 1.1E+01 8.3E+00 3.3E-09 8.6E-04
108-88-3 Toluene 26.2 0.786 - 1.0E+03 1.5E-04
71-55-6 Trichloroethane, 1,1,1- 4.4 0.132 - 1.0E+03 2.5E-05
75-69-4 Trichlorofluoromethane 1.3 0.039 - -
95-63-6 Trimethylbenzene, 1,2,4- 4.2 0.126 - 1.3E+01 2.0E-03
108-67-8 Trimethylbenzene, 1,3,5- 2.8 0.084 - 1.3E+01 1.3E-03
108-38-3 Xylene, m- - 2.1E+01
95-47-6 Xylene, o- - 2.1E+01
Cumulative: 1.0E-05 2.6E-01
All concentrations are in ug/m3
Output Form 3B
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
North Carolina DEQ Risk Calculator
DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Soil Gas to Indoor Air
Version Date: December 2019
Basis: November 2019 EPA RSL Table
Site ID: BCP-145
Exposure Unit ID: Sub-Slab Soil Vapor 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 180 1.8 - 2.7E+04 1.3E-05
71-43-2 Benzene 16.6 0.166 1.6E+00 2.6E+01 1.1E-07 1.3E-03
75-15-0 Carbon Disulfide 20.3 0.203 - 6.1E+02 6.6E-05
110-82-7 Cyclohexane 2.4 0.024 - 5.3E+03 9.1E-07
75-71-8 Dichlorodifluoromethane 3.1 0.031 - 8.8E+01 7.1E-05
141-78-6 Ethyl Acetate 2.2 0.022 - 6.1E+01 7.2E-05
100-41-4 Ethylbenzene 3.8 0.038 4.9E+00 8.8E+02 7.7E-09 8.7E-06
110-54-3 Hexane, N- 8.3 0.083 - 6.1E+02 2.7E-05
591-78-6 Hexanone, 2- 2.2 0.022 - 2.6E+01 1.7E-04
78-93-3 Methyl Ethyl Ketone (2-Butanone) 19.1 0.191 - 4.4E+03 8.7E-06
108-10-1 Methyl Isobutyl Ketone (4-methyl-2-pentanone) 2.9 0.029 - 2.6E+03 2.2E-06
75-09-2 Methylene Chloride 18.5 0.185 1.2E+03 5.3E+02 1.5E-10 7.0E-05
91-20-3 ~Naphthalene 23.8 0.238 3.6E-01 2.6E+00 6.6E-07 1.8E-02
115-07-1 Propylene 8.8 0.088 - 2.6E+03 6.7E-06
100-42-5 Styrene 2.4 0.024 - 8.8E+02 5.5E-06
127-18-4 Tetrachloroethylene 1.2 0.012 4.7E+01 3.5E+01 2.5E-10 6.8E-05
108-88-3 Toluene 26.2 0.262 - 4.4E+03 1.2E-05
71-55-6 Trichloroethane, 1,1,1- 4.4 0.044 - 4.4E+03 2.0E-06
75-69-4 Trichlorofluoromethane 1.3 0.013 - -
95-63-6 Trimethylbenzene, 1,2,4- 4.2 0.042 - 5.3E+01 1.6E-04
108-67-8 Trimethylbenzene, 1,3,5- 2.8 0.028 - 5.3E+01 1.1E-04
108-38-3 Xylene, m- - 8.8E+01
95-47-6 Xylene, o- - 8.8E+01
Cumulative: 7.7E-07 2.0E-02
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

Appendix C

Tabular Summary of Predicted Indoor Air Concentrations
Appendix CSummary of Sub-Slab Soil Vapor Analytical Results and Predicted Indoor Air ConcentrationsKroehler Manufacturing3412 Monroe RoadCharlotte, North CarolinaH&H Job No. BCP-145Sample IDSSV-1Predicted Indoor Air Conc.2SSV-2Predicted Indoor Air Conc.2SSV-3Predicted Indoor Air Conc.2Predicted Indoor Air Conc.2Attenuation FactorDateUnitsVOCs (TO-15)Acetone 1300.1421760.192 113 0.123 173 180 0.196 6,500 27,000Benzene 1.40.0021.10.001 0.79 0.001 16.6 15.6 0.018 3.6 162-Butanone (MEK) 11.80.013130.014 10.2 0.011 15.7 19.1 0.021 1,000 4,400Carbon disulfide 2.00.0020.57 J0.001 0.43 J 0.0005 20.1 20.3 0.022 150 610Chloroform<0.40--<0.38-- <0.38 --3.83.7 0.004 1.2 5.3Chloromethane<0.32--1.50.002<0.30 -- <0.290.86 0.001 19 79Cyclohexane 2.4 J0.003<0.68--1.0 J 0.001 2.0 J 2.2 J 0.002 1,300 5,3001,3-Dichlorobenzene 2.4 J0.0032.1 J0.002 2.1 J 0.002 1.9 J<1.10.002 NE NEDichlorodifluoromethane 2.80.0033.10.003 2.8 0.003 1.9 J 2.1 0.002 21 881,1-Dichloroethane<0.45--<0.44-- <0.44 --1.6 1.6 J 0.002 18 771,1-Dichloroethene<0.55--<0.53-- <0.53 --31.3 30.3 0.034 42 180Ethyl acetate 2.20.0021.70.002 1.5 0.002 1.2 J 1.3 J 0.001 15 61Ethylbenzene 2.00.0021.6 J0.002 1.5 J 0.002 3.8 3.7 0.004 11 494-Ethyltoluene 1.9 J0.002<1.1-- <1.1 --2.0 J 2.1 J 0.002 NE NEn-Heptane 2.90.0033.50.004<0.74 --4.4 4.2 0.005 83 350n-Hexane 5.10.0068.30.009 2.8 0.003 4.1 4.5 0.005 150 6102-Hexanone 2.0 J0.002<1.4--1.7 J 0.002 1.5 J 2.2 J 0.002 6.3 26Methylene Chloride 18.50.0206.7 J0.007 13.5 0.015 13.5 18.2 0.020 130 5304-Methyl-2-pentanone (MIBK) 1.7 J0.0022.9 J0.003 1.2 J 0.001 1.3 J 2.1 J 0.002 630 2,600Naphthalene<2.6--4.1 J0.004 4.1 J 0.004 23.8 20.5 0.026 0.63 2.6Propylene<0.28--3.70.004 1.1 0.001 8.4 8.8 0.010 630 2,600Styrene 2.00.0021.90.002 2.0 0.002 2.3 2.4 0.003 210 880Tetrachloroethene 0.74 J0.0011.1 J0.001 1.0 J 0.001 1.2 J 1.2 J 0.001 8.3 35Tetrahydrofuran 0.62 J0.0011.0J0.001<0.51 -- <0.49 <0.51 --420 1,800Toluene 6.00.0074.40.005 4.0 0.004 25.9 26.2 0.029 1,000 4,4001,1,1-Trichloroethane<0.62--1.2 J0.001 1.3 J 0.001 4.4 4.3 0.005 1,000 4,400Trichlorofluoromethane 1.1 J0.0011.3J0.001 1.2 J 0.001 1.1 J 1.0 J 0.001 NE NE1,2,4-Trimethylbenzene 2.90.0032.10.002 2.1 0.002 4.2 4.0 0.005 13 531,3,5-Trimethylbenzene 2.10.0021.4 J0.002 1.4 J 0.002 2.8 2.8 0.003 13 53m&p-Xylene 5.90.0064.20.005 3.8 0.004 13.9 13.3 0.015 21 88o-Xylene 2.20.0021.5J0.001 1.4 J 0.002 4.6 4.3 0.005 21 88Notes:1) NC Department of Environmental Quality (DEQ) Division of Waste Management (DWM) Indoor Air Screening Levels (Target Cancer Risk = 1.0 x 10-5; Target Hazard Index = 0.2) (February 2018) 2) Predicted indoor air concentration are calculated by multiplying the sub-slab soil vapor concentration by the most conservative attentuation factor established for the Site building (AF = 0.00109).3) The highest compound concentration detected at SSV-4/SSV-DUP used to calculate the predicted indoor air concentration.Compound concentrations are reported in micrograms per cubic meter (μg/m3)Sub-slab vapor sample compound concentrations are reported to the laboratory method detection limits.Only those compounds detected in at least one sub-slab soil vapor sample are shown in the table above.Laboratory analytical method shown in parentheses.AF = Attenuation Factor; VOCs = volatile organic compounds; NE = Not Established; -- Not ApplicableJ = compound was detected above the laboratory method detection limit, but below the laboratory reporting limit resulting in a laboratory estimated concentration.12/14/2019 12/14/2019 12/14/2019Warehouse - First Floorug/m3Non-Residential IASLs10.00109SSV-4 / SSV-DUP0.001090.001090.0010912/14/2019Residential IASLs1Sample LocationNortheast Central Southwest SouthwestWarehouse - BasementS:\AAA‐Master Projects\Beacon Partners‐ BEP or BCP\BCP‐145 Monroe Road\VI Assessment\Tables\SS_IAS Data Tables_rev12/12/2020Appendix C (Page 1 of 1)Hart & Hickman, PC