23074_Bookers Garage_VIMSRPT_20221219

hart
hickman
SMARTER ENVIRONMENTAL SOLUTIONS
Via Email
December 19, 2022
NCDEQ — Division of Waste Management
Brownfields Program
1646 Mail Service Center
Raleigh, NC 27699-1646
Attn: Ms. Sharon Eckard
Re: VIMS Installation Completion Report
Bookers Garage
1113-1121 Seigle Avenue & 820 E. 15th Street
Charlotte, North Carolina
Brownfields Project No. 23074-19-060
H&H Project No. SCF-001
Dear Sharon:
Please find enclosed the Vapor Intrusion Mitigation System (VIMS) Installation Completion
Report prepared for multi -family residential development at the Bookers Garage property
(Brownfields Project No. 23074-19-060) located in Charlotte, Mecklenburg County.
Should you have any questions or need additional information, please do not hesitate to contact us
at [phone].
Sincerely,
Hart & Hickman, PC
Alexis McKenzie, PE Christie Zawtocki, PE
Senior Project Engineer Principal Engineer
Enclosure
cc: Ms. Anna Coltrane, Spacecraft (via email)
Mr. Josh Gresham, Spacecraft (via email)
Mr. Harrison Tucker, Spacecraft (via email)
Mr. Chris Walker, Alexander Ricks (via email)
2923 South Tryon Street, Suite 100 3921 Sunset Ridge Rd, Suite 301
Charlotte, NC 28203 Raleigh, NC 27607 www.harthickman.com
704.586.0007 main 919.847.4241 main

VI MS Installation Completion Report
Bookers Garage
1113-1121 Seigle Avenue and
820 E. 15t" Street
Charlotte, North Carolina
Brownfields Project No. 23074-19-060
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H&H Job No. SCF-001
December 19, 2022
hickman
SMARTER ENVIRONMENTAL SOLUTIONS
2923 South Tryon Street, Suite 100 3921 Sunset Ridge Rd, Suite 301
Charlotte, NC 28203 Raleigh, NC 27607
704.586.0007 main 919.847.4241 rnain
#C-1269 Engineering
#C-245 Geology
www.harthickman.com

VIMS Installation Completion Report
Bookers Garage
Seigle Avenue and E. 15' Street
Charlotte, North Carolina
Brownfields Project No. 23074-19-060
H&H Job No. SCF-001
Table of Contents
1.0 Introduction................................................................................................................ 1
2.0 Vapor Mitigation System Installation...................................................................... 3
3.0 VIMS Efficacy Testing.............................................................................................. 6
3.1 VIMS Influence Testing...........................................................................................6
3.2 Sub -Slab Soil Gas Sampling.....................................................................................7
4.0 Summary and Conclusions......................................................................................10
Table 1 Site Location Map
Table
Fi ures
Figure 1 Site Location Map
Figure 2 Site Redevelopment Plan
Attachments
Appendix A VIMS As -Built Drawings — VM-1, VM-2, and VM-3
Appendix B VIMS Product Specifications
Appendix C VIMS Installation Photographs
Appendix D Field Forms
Appendix E Laboratory Analytical Report
Appendix F DEQ Risk Calculator
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VIMS Installation Completion Report
Bookers Garage
Seigle Avenue and E. 15t1 Street
Charlotte, North Carolina
Brownfields Project No. 23074-19-060
H&H Job No. SCF-001
1.0 Introduction
Hart & Hickman, PC (H&H) has prepared this report to document vapor intrusion mitigation
system (VIMS) installation at the multi -story residential apartment complex on the Bookers
Garage Brownfields Property (Brownfields Project No. 23074-19-060) located west of the
intersection of Seigle Avenue and E. 151h Street in Charlotte, Mecklenburg County, North Carolina
(Site). The Site is identified as 1113-1121 Seigle Avenue and 820 E. 15th Street. Redevelopment
plans for Site include a high -density luxury residential apartment complex with a sub -grade
parking garage. A Site location map is included as Figure 1, and a Site redevelopment plan
depicting the layout of the residential building and parking garage is included as Figure 2.
The Site redevelopment plan includes a sub -grade parking garage with three levels of multi -family
residential use above. The northwestern residential units are located over the one -level parking
garage, and the four first -level residential units along Seigle Avenue are constructed with slab -on -
grade. The building footprint above the parking garage is approximately 7,140 square feet and
includes residential units and the lobby area. The slab -on -grade units located along Seigle Avenue
total approximately 2,815 square feet and consist of two two -unit blocks which are connected at
the open-air lobby area. Based on the location of the parking garage under the residential units
and lobby area in the western part of the Site, a VIMS was not installed for this portion of the
redevelopment. As a conservative measure, vapor barrier was included beneath the recycling room
and the enclosed garage stairwell in the ground floor of the parking garage. The VIMS does not
extend under the remainder of the open-air parking garage, open-air stairwells, or elevator.
A VIMS was installed during construction of the apartment complex in accordance with the DEQ-
approved Vapor Intrusion Mitigation Plan dated August 4, 2021. A discussion of VIMS
installation activities is provided in Section 2.0, a summary of VIMS efficacy testing activities is
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provided in Section 3.0, and a summary and conclusions based on the results of the VIMS
installation activities and VIMS efficacy assessment activities are provided in Section 4.0.
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2.0 Vapor Mitigation System Installation
The VIMS consists of a passive sub -slab depressurization system, which includes a permeable
gravel layer, sub -slab soil gas collection network, vertical riser piping, wind -driven ventilators,
and a vapor barrier. As -built drawings including the system specifications and details (VM-1 and
VM-2) and the layout of the VIMS (VM-3) are provided in Appendix A. Product specifications
for the VIMS components are included in Appendix B.
Passive sub -slab depressurization is achieved through an interconnected vapor
collection/conveyance network installed in a permeable gravel layer beneath the building. The
permeable gravel layer (clean #57 or similar stone) was installed beneath the entirety of the
building to enhance sub -slab vapor transmission and collection effectiveness and allow for air
movement beneath the slab. Soil gas collector mat was installed within the high permeability stone
layer. The thickness of the high permeability stone around the soil gas collector mat extends a
minimum of 1 inch above the mat and a minimum of 1 inch below the sub -slab mat. In areas
without the soil gas collector mat, a minimum thickness of 4 inches of clean stone was installed.
Soil gas collector mat manufactured by Radon Professional Discount Supply (Radon PDS) was
used as an alternative sub -slab vapor collector pipe to the proposed sub -slab slotted PVC piping
below the apartment units. The soil gas collector mat is a polystyrene plastic rectangular conduit
with a geotextile fabric covering that is 1 inch thick and 12 inches wide and is specifically designed
for collecting soil gas from below a building. The soil gas collector mat was connected to the
vertical risers using Radon PDS manufactured riser connector fittings in accordance with the
manufacturer's installation instructions. Please note this VIMP modification was not pre -approved
by DEQ; however, the modification was approved by the design engineer (a NC Professional
Engineer) because the soil gas collector mat and accessories are an equivalent sub -slab soil gas
collector conduit to the PVC piping proposed in the VIMP. In addition, the Radon PDS mat is an
acceptable soil gas collector as indicated in the 4NS1/AARST 2020 Reducing Radon in New
Construction of I & 2 Family Dwellings and Townhouses document.
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Vapor extraction is accomplished using wind -driven turbines and a vapor collection/conveyance
piping network. The sub -slab soil gas collector mat is connected to riser piping which extends
vertically through the building and discharges vapors through exhaust stacks installed above the
building roof. Active Ventilation Products, Inc manufactured Aura Ventilators were installed on
the discharge end of the exhaust stacks on the roof. The Aura Ventilator was approved by the
design engineer as an alternative to the Empire Syphon Ventilator specified in the VIMP.
VaporblockO Plus 20 (VBP20), a vapor barrier manufactured by Raven Industries (Raven), was
installed above the gravel layer and beneath the concrete slab of the building. VBP20 is an ASTM-
certified 20-mil, multi -layer, chemically -resistant vapor barrier, designed to prevent the migration
of volatile organic compounds (VOCs). The vapor barrier was installed by the construction
contractor to cover the ground surface below the entire area of the ground floor slab. The exterior
edges of the VBP20 were laid underneath the footings and attached and sealed to existing concrete
utilizing VaporSealTM tape and Butyl Seal double -sided tape. Seams within the building footprint
have a minimum 12-inch overlap and were sealed with VaporSealTM tape.
The VIMP includes vacuum measuring points (depicted in Sheet VM-3) which were used to
measure vacuum during influence testing activities and to collect sub -slab vapor samples. To
prevent disrupting building operations in the future, the three permanent vacuum measuring point
access ports were installed on the building exterior and in the riser room.
During installation of the VIMS, H&H conducted inspections during various phases of
construction to confirm the VIMS was installed in accordance with the VIMP. Inspections were
completed during the following phases:
• after installation of horizontal collection system and gravel base placement;
• after vapor barrier installation and prior to pouring the concrete building slab; and
• after installation of exposed vertical exhaust riser pipe and wind -driven turbines.
Based upon inspections completed during the VIMS installation activities, the VIMS was generally
installed in accordance with the DEQ-approved VIMP with the exception of the soil gas collector
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mat and ventilator modifications discussed above. A photographic log of the VIMS installation
activities is provided in Appendix C.
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3.0 VIMS Efficacy Testing
To evaluate efficacy of the VIMS, H&H completed influence testing and collected sub -slab soil
gas samples. The efficacy testing was completed in accordance with the DEQ-approved VIMP,
and the sub -slab soil gas sampling was also conducted in accordance with the DEQ DWM Vapor
Intrusion Guidance (Guidance) dated March 2018.
3.1 VIMS Influence Testing
On April 18, 2022, H&H completed influence testing at each slab section to evaluate system
sub -slab communication and to confirm that adequate vacuum can be obtained should an active
depressurization system be needed in the future. DEQ considers 4 Pascals (Pa) differential
pressure the minimum vacuum needed for an active depressurization system to effectively treat
potential vapor intrusion.
To perform the influence testing, H&H connected electric fans with variable vacuum settings to
the vertical riser piping to model an active depressurization system. Differential pressure
measurements were collected at the vacuum monitoring points using a Dwyer series 475 Mark III
Digital manometer (capable of measuring to 0.001 inches of water column [in -WC] or 0.25 Pa) to
establish baseline conditions prior to use of the electric fans. The electric fans were then turned
on and differential pressure measurements were collected at each monitoring point after the fans
had been running for 15 minutes. The locations of the permanent monitoring points (denoted by
MP nomenclature) are shown in VM-3 (Appendix A). The pilot test field form is included in
Appendix D. Results of the influence tests indicated sufficient differential pressure was measured
ranging from -1.247 to -1.895 in -WC (-310 Pa to -471 Pa) in each of the permanent monitoring
points.
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3.2 Sub -Slab Soil Gas Sampling
Sampling Activities
On October 17, 2022, following successful installation of the VIMS, H&H collected three sub -
slab soil gas samples from monitoring points installed within the Site building. The sub -slab soil
gas samples were collected from permanent monitoring point locations MP-1 in the southern slab
and MP-2 and MP-3 in the northern slab, as shown in VM-3 in Appendix A. One duplicate sub -
slab soil gas sample was also collected for quality assurance/quality control (QA/QC) purposes
during the sampling event at the MP-3 sample location.
Prior to sample collection, H&H conducted a leak test at each monitoring point by placing a shroud
around the monitoring point and sampling train including the Summa canister. The air within the
shroud was flooded with helium gas, and concentrations were measured with a calibrated helium
detector and maintained at approximately 15% concentration of helium. Using a Gilian GilAir-3
pump, the monitoring point and sample train was purged of minimum of three volumes. Vapor
from the monitoring point and sample train was collected outside of the shroud into a Tedlar® bag
and analyzed using the helium gas detector to confirm helium concentrations in the sample were
less than 10% of concentration measured within the shroud. Each monitoring point passed the
helium leak check criteria. Sub -slab soil gas sample field forms completed by sampling personnel
during the event are included in Appendix D.
Following a successful leak check, the air flow regulators were opened to allow collection of the
monitoring point soil gas samples. Vacuum in the Summa canisters was monitored during the
sampling event to confirm adequate sample volume was collected at each monitoring point
location. The vacuum pressure in each Summa canister upon completion of the sampling event
was approximately 5 inches of mercury. Upon completion of sample collection, the air flow
regulator was closed and disconnected from the Summa canister. The canisters were labeled with
the sample identification, beginning and ending times and pressure measurements, and the
requested analysis. The canisters were then placed in laboratory -supplied shipping containers and
delivered to Con -Test, A Pace Analytical Laboratory under standard chain of custody protocols
for analysis of volatile organic compounds (VOCs) by EPA Method TO-15.
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Sampling Results
A tabular summary of the sub -slab soil gas sample analytical results is provided in Table 1. The
results were compared to the DEQ DWM Residential Vapor Intrusion Sub -Slab and Exterior Soil
Gas Screening Levels (SGSLs) dated July 2022. The laboratory analytical report with chain -of -
custody record is provided as Appendix E.
The sub -slab soil gas sample analytical results indicate that several compounds were detected at
concentrations above laboratory method detection limits in each sample. No compounds were
detected at concentrations above DEQ DWM Residential Vapor Intrusion SGSLs in sub -slab soil
gas samples collected below the northern and southern building slabs. Trichloroethene (TCE) was
not detected above the laboratory method detection limit in the sub -slab soil gas samples.
The DEQ DWM Vapor Intrusion SGSLs are very conservative and based on a target carcinogenic
risk (TCR) for potential carcinogenic risks of 1 x 10"6 and a hazard quotient (HQ) of 0.2 for
potential non -carcinogenic risks. The DEQ and EPA acceptable risk level for potential
carcinogenic risks is a cumulative lifetime incremental cancer risk (LICR) of I x 10-4 or less and
the acceptable level for non -carcinogenic risks is a cumulative hazard index (HI) of I or less. The
HI is the sum of HQs for each target analyte.
Although no compounds were detected at concentrations exceeding the DEQ DWM Residential
Vapor Intrusion SGSLs in the sub -slab soil gas samples, H&H utilized the DEQ Risk Calculator
(July 2022) to confirm there are no potential vapor intrusion risks at unacceptable levels. Because
the northern and southern slabs are two distinct footprints, H&H modeled a worst -case scenario
for each slab by using the highest concentrations of any compound detected in the sub -slab to
conservatively evaluate potential vapor intrusion risks for a residential use scenario. The
calculated cumulative LICR and HI values for each slab are provided in Table 1, and a copy of the
completed DEQ Risk Calculator is provided in Appendix F.
As shown in Table 1, results of the worst -case risk calculations for a residential use scenario in the
southern slab indicate a calculated cumulative LICR of 0.0 and a HI value of 0.040. Similarly, the
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results of the worst -case risk calculations for a residential use scenario in the northern slab indicate
a calculated cumulative LICR of 0.0 and a HI value of 0.040. The calculated cumulative residential
use LICR and HI values for each slab are orders of magnitude below the DEQ and EPA acceptable
levels. These risk calculator results confirm that compound concentrations detected below the slab
do not pose vapor intrusion risks at unacceptable levels within the residential building. No
additional sub -slab or indoor air sampling is warranted at this time and the next sub -slab sampling
event will be completed in approximately 6 months.
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4.0 Summary and Conclusions
Construction of the multi -family residential apartment building is nearing completion at the
Bookers Garage Brownfields Property (Brownfields Project No. 23074-19-060) located in
Charlotte, Mecklenburg County. During construction of the Site building, H&H conducted VIMS
installation inspections to confirm the system was installed as designed and completed post -
installation influence testing and sub -slab soil gas sampling activities to evaluate efficacy of the
system. The VIMS installation inspections and post -installation testing activities were completed
in general accordance with the DEQ-approved VIMP. A brief summary of the VIMS installation
and post -installation efficacy assessment activities is provided below.
VIMS installation has been completed for the Site buildings and consists of a passive sub -slab
depressurization system with vertical extraction piping to the roof connected to wind -driven
turbine fans. Modifications were made to the VIMS and approved by the design engineer (a NC
Professional Engineer). The modifications included substituting soil gas collector mat for the
slotted piping in the sub -slab and substituting Aura Ventilators for the Syphon Ventilators at the
rooftop discharge locations. During installation of the VIMS, H&H personnel, under direction of
a North Carolina licensed Professional Engineer, conducted inspections during each stage of
installation. Results of the installation inspections indicate that the VIMS was successfully
installed in general accordance with the DEQ-approved VIMP, with the exception of the product
substitutions approved by a NC Professional Engineer.
Influence testing and sub -slab vapor sampling were completed to evaluate efficacy of the VIMS.
The influence testing confirmed sufficient vacuum (greater than 4 Pa differential pressure) could
be achieved by vacuum fans if an active system is needed in the future. Sub -slab soil gas sampling
included the collection of three sub -slab soil gas samples within the Site building to evaluate the
effectiveness of the VIMS. Laboratory analytical results of the sub -slab soil gas samples indicate
that no compounds were detected at concentrations above the DEQ DWM Residential Vapor
Intrusion SGSLs. In addition, no TCE was detected in the sub -slab soil gas samples.
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H&H utilized the DEQ Risk Calculator (July 2022) to calculate the cumulative carcinogenic and
non -carcinogenic risks under hypothetical worst -case residential scenario by utilizing the highest
concentration of each compound detected in the sub -slab soil gas samples in each slab. The
hypothetical worst -case residential use risk calculator results indicate calculated cumulative LICRs
of 0.0 and a HI values of 0.040 for both the southern and northern slabs. The calculated LICR and
HI values are substantially below DEQ and EPA acceptable levels. Thus, the compound
concentrations detected below the slab do not pose vapor intrusion risks at unacceptable levels,
and the VIMS is effectively mitigating potential vapor intrusion into the Site building.
Based on results of the VIMS installation inspections, post -installation influence testing, and sub -
slab soil gas assessment activities, the VIMS is effectively mitigating potential vapor intrusion
risks within the Site building. In accordance with the DEQ-approved VIMP, the next sub -slab soil
gas sampling event will be completed in April 2023, approximately 6 months after the pre-
occupancy sampling event.
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Table
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Table 1
Summary of Soil Gas Analytical Data
1113-1121 Seigle Avenue and 820 E. 15th St
Charlotte, North Carolina
H&H Job No. SCF-001
Sample Location
Southern Slab
Northern Slab
Residential SGSLs
Sample ID
MP-1
MP-2
MP-3/MP-DUP
Date
10/17/2022
10/17/2022
10/17/2022
Units
pg/m3
VOCs (TO-15)
Acetone
120
1,900
3,200 3,000
NE
2-Butanone (MEK)
1,200
42 J
700 740
35,000
Carbon Disulfide
<1.4
2.1 J
<5.8 <5.8
4,900
Chloromethane
1.5 J
<0.82
<3.3 <3.3
630
Dichlorodifluoromethane (Freon 12)
<2.4
2.4 J
<9.7 <9.7
700
cis- 1,2-Dichloroethylene
1.6 J
<1.4
<5.8 <5.8
NE
Isopropanol
8.6 J, L-03
<8.5 L-03
36 J, L-03 <34 L-03
1,400
Styrene
4.8
<1.1
<4.5
7,000
Tetrahydrofuran
2,200
3,900
7,900 8,300
14,000
Toluene
3.8
1.3 J
- 4.5 J
35,000
1,2,4-Trimethylbenzene
<1.1
9.2 J 9.6 J
420
DEQ Cumulative Risk Calculator
Acceptable Risk Levels
< 1.0 x 10-4
LICR (worst -case)
0.0 x 100
0.0 x 100
Non -Carcinogenic HI (worst -case)
0.040
0.040
< 1.0
Notes:
1) NC Department of Environmental Quality (DEQ) Division of Waste Management (DWM) Vapor Intrusion Sub -slab and Exterior Soil Gas Screening Levels
2) NC DEQ DWM Cumulative Risk Calculator dated July 2022.
Compound concentrations are reported in micrograms per cubic meter (pg/m3)
Compound concentrations are reported to the laboratory method detection limits.
Only those compounds detected in at least one sample are shown above.
Laboratory analytical method shown in parentheses.
VOCs = volatile organic compounds; NE = Not Established; LICR = Lifetime Incremental Carcinogenic Risk; HI = Hazard Index
Cumulative LICR and HI calculated using the worst -case scenario and compared to DEQ and EPA acceptable risk levels for carcinogenic and non-carcinog(
J = compound was detected above the laboratory method detection limit, but below the laboratory reporting limit resulting in an estimated concentration.
L-03 = Laboratory fortified blank/control sample recovery is outside of control limits and reported value for this compound is likely biased low.
Table 1 (Page 1 of
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Figures
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Appendix A
VIMS As -Built Drawings
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VAPOR INTRUSION MITIGATION SYSTEM (VIMS) SPECIFICATIONS
FIIIIIIIIIIIIIIII:R 101-11go] :1f1►11:101.1Is] 011 1II[ele1I[QLI_ , :11 M161 NioZdto] AIa01avI1AfbYdIo]1 Igo] ►1A0121►RIftwe1Ito] Is] 0W/_1►V_1: a0[Q21►11a0 aI to] ololdto] AIa01adto] RI1:i0141to] [o] "It 1111t]I0[e] 114161 Ias] 01a►11612►[Q2:iW_1lILem I:LkvIOVA mI:NILVJI AfbiVi%l%0
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2. CONSTRUCTION CONTRACTORS AND SUB -CONTRACTORS WERE INSTRUCTED TO USE "LOW OR NO VOC" PRODUCTS AND MATERIALS, WHEN POSSIBLE, AND WERE INSTRUCTED NOT TO USE PRODUCTS CONTAINING
TETRACHLOROETHENE (PCE) OR TRICHLOROETHENE (TCE) SHALL BE USED.
3. VIMS VAPOR LINER IS VAPORBLOCK PLUS 20 VAPOR BARRIER MANUFACTURED BY RAVEN INDUSTRIES, INC. THE VAPOR LINER WAS INSTALLED AS SPECIFIED IN THE VAPOR INTRUSION MITIGATION PLAN AND PER MANUFACTURER
INSTALLATION INSTRUCTIONS TO CREATE A CONTINUOUS LINER BELOW GROUND FLOOR SLABS. A BASE COURSE CONSISTING OF CLEAN #57 STONE WAS INSTALLED BENEATH THE VIMS VAPOR LINER. IN AREAS AROUND THE SOIL
GAS COLLECTOR MAT, THE BASE COURSE LAYER IS THICK ENOUGH TO COVER THE COLLECTOR MAT WITH A MINIMUM 1-INCH LAYER ABOVE AND 1-INCH BELOW THE MAT. IN AREAS WITHOUT SOIL GAS COLLECTOR MAT, THE BASE
COURSE IS A MINIMUM OF 4-INCHES THICK.
4. ALL PENETRATIONS WERE SEALED ACCORDING TO VAPOR LINER MANUFACTURER INSTALLATION INSTRUCTIONS AS FOUND IN THE MANUFACTURER INSTALLATION GUIDELINES. AS VAPORBLOCK PLUS 20 WAS USED, SMALL
VAPOR MITIGATION PLAN PREPARED BY
hart ; hickman
SMARTER ENVIRONMENTAL SOLUTIONS
2923 Sourh'Cryov Sn s.ire 100
Ch.A.—, N—h Ccoli— 28203
704-586-0007(p) 704586-0373(L)
License # C-1269 / #G245 Geology
ISSUED FOR CONSTRUCTION
PUNCTURE HOLES WERE SEALED WITH THE VAPORSEALTm TAPE AND BUTYL SEAL DOUBLE SIDED TAPE AND LARGER HOLES, TEARS, OR DAMAGE WERE REPAIRED USING A PATCH THAT OVERLAPS THE DAMAGED AREA AND THEN WAS
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TAPED ALONG THE SEAMS.
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5. CONSTRUCTION CONTRACTORS AND SUB -CONTRACTORS MINIMIZED THE USE OF TEMPORARY FORM BOARDS THAT PENETRATE THE VAPOR LINER WHERE POSSIBLE. WHERE TEMPORARY FORM BOARDS WERE USED, THE SIZE AND
J
O
NUMBER OF PENETRATIONS THROUGH THE VAPOR LINER WAS LIMITED AND SMALL DIAMETER STAKES (I.E. SOLID METAL STAKES) WERE USED. AS FORM BOARDS WERE REMOVED, THE CONTRACTOR OR SUB -CONTRACTORS SEALED
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ALL PENETRATIONS IN ACCORDANCE WITH VAPOR LINER MANUFACTURER INSTALLATION INSTRUCTIONS.
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6. VIMS BELOW AND ABOVE GRADE PIPING IS SLOPED A MINIMUM OF Y UNIT VERTICAL IN 12 UNITS HORIZONTAL (1% SLOPE) TO GRAVITY DRAIN. SOLID SECTIONS OF HORIZONTAL COLLECTION PIPE WERE SUPPORTED TO PREVENT
Z
PIPE SAG OR LOW POINT AND MAINTAIN 1% SLOPE TOWARD THE SUB -GRADE TO DRAIN CONDENSATION. THE SUB -SLAB VAPOR COLLECTION SYSTEM CONSISTS OF SOIL GAS COLLECTOR MAT WHICH IS APPROXIMATELY 1-INCH
a
THICK BY 12-INCHES WIDE RECTANGULAR CONDUIT.
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7. RISER DUCT PIPING EXTENDS IN A VERTICAL ORIENTATION THROUGH THE BUILDING ROOF AND TERMINATES A MINIMUM OF 2 FT ABOVE THE BUILDING ROOF LINE. AN ACTIVE VENTILATION PRODUCTS, INC 3" DIAMETER AURA
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VENTILATOR WAS INSTALLED ON THE EXHAUST DISCHARGE END OF EACH RISER DUCT PIPE. ABOVE -SLAB RISER DUCT PIPE RUNS BETWEEN THE SLAB PENETRATION AND THE ROOFTOP EXHAUST DISCHARGE WERE INSTALLED PER
ui
APPLICABLE BUILDING CODE AND AS SPECIFIED IN THE CONSTRUCTION DOCUMENTS AND DRAWINGS. AN ADAPTOR COUPLING WAS INSTALLED AT THE DISCHARGE END OF THE 3" RISER DUCT PIPE AND THE VENTILATOR WAS
d�u/i�
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SECURED TO THE PVC RISER IN A VERTICAL ORIENTATION. EXHAUST DISCHARGE LOCATIONS ARE A MINIMUM OF 10 FT FROM ANY OPERABLE OPENING OR AIR INTAKE INTO THE BUILDING. AN ELECTRICAL JUNCTION BOX (120V, 60Hz
O
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r
AC REQUIRED) WAS INSTALLED NEAR THE DISCHARGE LOCATIONS ON THE ROOFTOP FOR FUTURE CONVERSION TO ELECTRIC FANS, IF REQUIRED. ALL WIRING AND ELECTRICAL WAS INSTALLED PER APPLICABLE BUILDING AND
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ELECTRICAL CODES.
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8. ABOVE -SLAB ACCESSIBLE RISER DUCT PIPING WAS PERMANENTLY IDENTIFIED BY MEANS OF A TAG AT A MINIMUM OF ONCE EVERY 10-LINEAR FT AND AT THE ROOFTOP DISCHARGE WITH "VAPOR MITIGATION -CONTACT BUILDING
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MAINTENANCE".
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9. INSPECTIONS OF EACH COMPONENT OF THE VIMS WERE CONDUCTED BY THE ENGINEER, OR ENGINEER'S DESIGNEE, TO CONFIRM VIMS COMPONENTS WERE INSTALLED PER THE APPROVED DESIGN. THE COMPLETED INSPECTIONS
INCLUDED: (1) INSPECTION OF SUB -SLAB SYSTEM LAYOUT AND GRAVEL PLACEMENT PRIOR TO INSTALLING VAPOR LINER; (2) INSPECTION OF VAPOR LINER PRIOR TO POURING CONCRETE; (3) INSPECTION OF ABOVE -GRADE PIPING
LAYOUT; AND (4) INSPECTION OF VENTILATOR AND VENT PIPE CONNECTIONS.
PROFESSIONAL
APER, Q YAL
4` CA'aFr"M1
� 740
1
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•!I III!! 11 rYlY4514N
I H&H NO. SCF-001 1
VIMS
SPECIFICATIONS
AS -BUILT
DECEMBER 19, 2022 1
REVISION 0

SUBBASE
JUK 5LAb
R LINER (SEE SPECIFICATION #3)
BASE COURSE - CLEAN #57 STONE
MIN 4" THICK BENEATH VIMS VAPOR LINER
VIMS VAPOR LINER AND BASE COURSE (TYP)
NTS
I G I-LUUM JL/AD
'OR BARRIER (SEE SPECIFICATION #3)
SOIL GAS COLLECTOR MAT WITHIN BASE
COURSE - MIN 4" THICKNESS TO COVER
VENT WITH MIN 1-INCH ABOVE AND BELOW
(SEE SPECIFICATIONS #3)
ASE
VIMS SUB -SLAB VENT (TYP)
NTS
BRICK VENEER
WOOD STUD
WALL
LEVEL
CONCRETE INTERIOR SPACE
FLOOR SLAB
BASE COURSE I —
III —III -II
(SEE SPECIFICATION #3) I III I I
SUB -BASE
SIDEWALK LEVEL
EXTERIOR GRADE
(VARIES)
VAPOR LINER SEALED TO OUTSIDE OF CONCRETE //��
PER MANUFACTURER INSTRUCTIONS :III I I I I
-III "•�� I I-III-III=I � I=I � I
ICI -II - jl=1�l_I�I ICI -I
=III DRAIN
(3_� VAPOR BARRIER AT EXTERIOR WALL
NTS
BRICK VENEER
WOOD STUD OR ALTERNATE
WALL EXTERIOR FINISH
LEVEL1
CONCRETE I INTERIOR SPACE
FLOOR SLAB
MONITO
WILL BE NO MORE THAN 4 FEET
OFF THE SIDEWALK LEVEL
BASE COURSELABELED WITH "VAPOR MITIGATION
_
(SEE SPECIFICATION #3) SUB -BASE —III; III I SYSTEM".
II II
SIDEWALK LEVEL
•• EXTERIOR GRADE
VAPOR LINER SEALED TO OUTSIDE OF CONCRETE (VARIES)
PER MANUFACTURER INSTRUCTIONS :III I I I
:III -I � ` : =1 � I-III=III-III=III-I
-III °' r l l-III III -III -I I I
II I I I %' I -III III III I
DRAIN
4 MONITORING POINT AT EXTERIOR WALL
NTS
INTERIOR WALL IN RISER ROOM
LOCKABLE ENCLOSURE
VAPOR BARRIER
STUD WALL
2" SCH 40 PVC ELBOW
2" OPEN ENDED PIPE
2" SOLID
SCH 40 PVC
BASE COURSE (57 STONE)
INTERIOR WALL -MOUNTED VACUUM MEASURING POINT
NTS
SLAB ON GRADE
INTERIOR
WOOD SHEAR WALL
CONCRETE
FLOOR SLAB
c • ,
VAPOR LINER SEALED TO OUTSIDE OF CONCRETE —111
PER MANUFACTURER INSTRUCTIONS I I I I I. a
III —RETAINING WALL
CONCRETE WALL AGAINST SUB -GRADE
RETAINING WALL w PARKING GARAGE
AIRKING
. ARAGE GRADE
DRAINS ^ a ,.• ..°
SLAB ON GRADE AT PARKING GARAGE RETAINING WALL
NTS
TENANT SEPARATION
WALL
CONCRETE FLOOR SLAB
}17
elBASE COURSE
NTS
3" SCH 40 PVC RISER PIPING
GAS COLLECTOR MAT CONNECTION BLOCK
TO PVC
VAPOR LINER SEALED TO PIPE
AND CONCRETE PER
MANUFACTURER INSTRUCTIONS.
SOIL GAS
COLLECTOR
MAT
VAPOR LINER
(SEE SPECIFICATION #3)
IG WALL
9 VIMS AT FIRE RATED STAIRCASE
VM2 NTS
3" SCH 40 PVC RISER PIPING
INTERIOR UNIT WALL
SOIL GAS COLLECTOR MAT CONNECTION BLOCK
TO PVC 3" AURA VENTILATOR
(MANUFACTURED BY ACTIVE VENTILATOR
VAPOR LINER SEALED TO PIPE PRODUCTS, INC)
CONCRETEAND _� MANUFACITIJRERINSTRUCTIONS.
RISER DUCT PIPE THROUGH ROOF
- SOIL GAS
COLLECTOR FLASHING
MAT
(U
ROOFTOP ELECTRICAL JUNCTION BOX FOR POTENTIAL
FUTURE VACUUM FAN (REFER TO
RISER AT INTERIOR UNIT WALL
SPECIFICATION #8)
NTS
10 VIMS AURA VENTILATOR & EXHAUST (TYP)
VM2 NTS
VAPOR MITIGATION PLAN PREPARED BY:
14
hart hickman
SMARTER ENVIRONMENTAL SOLUTIONS
2923 South Tryon Street -Suite 100
Chulotte, Nonh C=hm 28203
704-586-0007(p) 704-586-0373(E)
License # C-1269 / #C-245 Geology
ISSUED FOR CONSTRUCTION
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PROFESSIONAL
APPF YVAL
+„yHI r,ry�
ep C'AR()
R �7�
M�IIII I i .014,
H&H NO. SCF-001
VIMS DETAILS
AS -BUILT
I DECEMBER 19, 2022 I
REVISION 0
VM-2

VAPOR BARRIER WITHIN ::
GARAGE FOOTPRINT WILL OPEN AIR AMENITY
CM BE INSTALLED BELOW THE CT
GARAGE SLAB
Uo2], EEE-,�,�
PR MIMMIN
VAPOR MITIGATION PLAN PREPARED BY:
I
hart z hickman
GARAGELEVEL SMARTER ENVIRONMENTAL SOLUTIONS
■ ■ ■ o. PODIUM SLAB
-6" �n rte
RECYCLING
■ � Charlotte, North Carolirta 28203
FIRE RATED (692.87')
704-686-0007(p) 704-586-0373(o
ROOMLicense # C-1269 #C-245 Geolo
STAIRCASE TO — SECURE ACCESS GATE APARTMENTS ABOVEL
GARAGE LEVEL 3 ■I
0 B - YPE PARKING GARAGE ISSUED FOR CONSTRUCTION
mail ir
I
9 packages T.O. RETAINING T.C. ETAINING
WALL WALL
V A A 2 116'-6" 116'-
�V� T.O. GRADE T.O. R E p
O O a mT.O. GRADE T.O. ■I■■I■■I■■I ■I■■I■■ ■■I■■I■■i I■■�■■I■■I■■I ■I■ I Z
O o
114'-2" 114'- ■ J
Ll m ■ 6 _ wO
m VM � � W � �
T.O. RETAINING I O ■ V Z a
r WALL I ■ < W U
M ■ 1 T.O. STUDIO 14'-6"
E-1 7 -" (690I04')AB VM2 I > _
RisER Roots I VM2 I III 1 MP-3 Q
1
0 1 VM2 - � � � - I � w
o I I E-2 a I � J O
4 � CD Z
MP-1 I
m - VM2 w W LLI
}
o I 0
5 1 I 00 8 I O
0A
VM I VM O N O
CL
0 O o I I I J
I 3 Q
I
■■i 4 I U
VM2
1 I
■ 3 2
PROFESSIONAL
VM2 MP-2 VM APP,FRQYAL
fiwns4e
. CA171 Lz;;4�
yO'
T.O. GRADE g' ' fSIE& s
1 /2" - a
5
%R4` Jvg114rce.
H&H NO. SCF-001
LEGEND VIMS SUB -SLAB
PIPING
AS -BUILT
EXTENT OF VAPOR BARRIER
SUB —SLAB SOIL GAS COLLECTOR MAT G DECEMBER 19, 2022
E-1® VERTICAL RISER (3" SCH 40 PVC PIPE) AND EXHAUST LOCATION (SEE
DETAIL 10 ON VM-2) REVISION 0
APPROXIMATE
MP-1� VACUUM MEASURING POINT (2" SCH 40 PVC WITH OPEN END) 0 10 20
SCALE IN FEET
BUILDING AREA OVER SUB —GRADE PARKING GARAGE — NO VIMS INSTALLED EXCEPT WHERE INDICATED VM-3

Appendix B
VIMS Product Specifications
10
hart hickman
SMARTER ENV,RONMERFA: SORMOUS

VAPORBLOCK! PLUS TM . .
VBP20
UNDER -SLAB VAPOR / GAS BARRIER
PRODUCT DESCRIPTION
VaporBlock® PIusTI is a seven -layer co -extruded barrier
made using high quality virgin -grade polyethylene and
EVOH resins to provide unmatched impact strength as well
as superior resistance to gas and moisture transmission.
VaporBlock® PIusTI 20 is more than 100 times less permeable
than typical high-performance polyethylene vapor retarders
against Methane, Radon, and other harmful VOCs. Tested and
verified for unsurpassed protection against BTEX, HS, TCE, PCE,
methane, radon, other toxic chemicals and odors.
VaporBlock® PIusT'" 20 multi -layer gas barrier is manufactured
with the latest EVOH barrier technology to mitigate hazardous
vapor intrusion from damaging indoor air quality, and the safety
and health of building occupants. VBP20 is one of the most
effective underslab gas barriers in the building industry today
far exceeding ASTM E-1745 (Plastic Water Vapor Retarders
Used in Contact with Soil or Granular Fill Under Concrete Slabs)
Class A, B and C requirements. Available in a 20 (Class A) mil
thicknesses designed to meet the most stringent requirements.
VaporBlock® PIusT'" 20 is produced within the strict guidelines
of our ISO 9001 Certified Management System.
Ri111111039
VaporBlock® PIusTm 20 resists gas and moisture migration
into the building envelop when properly installed to provide
protection from toxic/harmful chemicals. It can be installed as
part of a passive or active control system extending across the
entire building including floors, walls and crawl spaces. When
installed as a passive system it is recommended to also include
a ventilated system with sump(s) that could be converted to an
active control system with properly designed ventilation fans.
VaporBlock® PIusTm 20 works to protect your flooring and
other moisture -sensitive furnishings in the building's interior
from moisture and water vapor migration, greatly reducing
condensation, mold and degradation.
SIZE & PACKAGING
VaporBlock® PIusTm 20 is available in 10' x 150' rolls to
maximize coverage. All rolls are folded on heavy-duty cores
for ease in handling and installation. Other custom sizes
with factory welded seams are available based on minimum
volume requirements. Installation instructions and ASTM E-1745
classifications accompany each roll.
Under -Slab Vapor/Gas Retarder
PRODUCT PART #
VaporBlock® PIusT"^ 20................................................................ VBP20
APPLICATIONS
Radon Barrier Vapor Intrusion Barrier
Methane Barrier Under -Slab Vapor Retarder
VOC Barrier Foundation Wall Vapor Retarder
Brownfields Barrier
��GJoP g VAPOR lock' T1E ��"
UNDERSLA
0 2018 RAVEN INDUSTRIES INC. All rights reserved.

VAPORBLOCr PLUS TM vePzo
APPEARANCE
White/Gold
THICKNESS, NOMINAL
20 mil 0.51 mm
WEIGHT
102 Ibs/MSF 498 g/m2
CLASSIFICATION
ASTM E 1745
CLASS A, B & C
ASTM E 154
3
TENSILE STRENGTH
Section 9
58 Ibf 102 N
(D-882)
IMPACT RESISTANCE
ASTM D 1709
2600 g
ASTM E 154
Section 7
0.0098 Perms 0.0064 Perms
PERMEANCE (NEW MATERIAL)
ASTM E 96
grain s/(ft2-hr-imHg) g/(24hr•m2•mm Hg)
Procedure B
ASTM E 154
PERMEANCE (AFTER CONDITIONING)
Section 8, E96
0.0079 0.0052
Section 11, E96
0.0079 0.0052
(SAME MEASUREMENT AS ABOVE PERMEANCE)
Section 12, E96
0.0097 0.0064
Section 13, E96
0.0113 0.0074
WVTR
0.0040 grains/hr-ft2 0.0028 gm/hr-m2
Procedure B
BENZENE PERMEANCE
See Note 6
1.13 x 10-10 m2/Sec or 3.62 x 10-13 m/s
TOLUENE PERMEANCE
See Note 6
1.57 x 10-10 m2/sec or 1.46 x 10-13 m/5
ETHYLBENZENE PERMEANCE
See Note 6
1.23 x 10-10 m2/sec or 3.34 x 10-14 m/s
M & P-XYLENES PERMEANCE
See Note 6
1.17 x 10-10 m2/sec or 3.81 x 10-14 m/5
O-XYLENE PERMEANCE
See Note 6
1.10 x 10-10 m2/sec or 3.43 x 10-14 m/s
HYDROGEN SULFIDE
See Note 9
1.92E-09 m/s
TRICHLOROETHYLENE (TCE)
See Note 6
7.66 x 10-11 m2/sec or 1.05 x 10-14 m/5
PERCH LOROETHYLENE (PCE)
See Note 6
7.22 x 10-11 m2/sec or 1.04 x 10-14 m/s
RADON DIFFUSION COEFFIECIENT
K124/02/95
< 1.1 x 10-13 m2/s
3.68E-12 m/s
METHANE PERMEANCE
ASTM D 1434
Gas Transmission Rate (GTR):
0.32 mL/m2•dayatm
MAXIMUM STATIC USE TEMPERATURE
180' F 82' C
MINIMUM STATIC USE TEMPERATURE
- 70' F - 57' C
3 Tests are an average of machine and transverse directions.
VaporBlock® PlusTM' Placement
5 Raven Industries performs seam testing at 20" per minute.
6 Aqueous Phase Film Permeance.
All instructions on architectural or structural drawings should be reviewed and followed.
Permeation of volatile organi, Cump... ds through EvoH Thin Film Membranes and C
... n,ded LDPE/EvoH/
Detailed installation instructions accompany each roll of VaporBlocke Plus'" and can also
LLDPE Geumembranes, Mawatters and Rowe, Journal of Geutechnical and Ge.-i--tal
September 2015. (Permeation is the Permeation Coefficient adjusted to adual film thickness .
Engineering® ASCE/
calculated at 1 kg/m'.)
be located at www.ravenefd.com.
Thestudy used to determine PCE and TCE is tiled: Ey.1-i not dirtu:ion of PCE& TCE through high pedurmance
geumembranes by Di
ASTM E-1643 also provides general installation information for vapor retarders.
Battista and Rowe, Queens University 8 Feb 2018,
8 The study used to determine diffusion coefficients is titled: Hydroggen Sulfide (H,S) Transport
through Simulated Interim Covers with Conventional and Co -Extruded Ethylene -Vinyl
Alcohol (EVCH) Geomembranes.
W7[7pOC B 1ock@ APOR RETARDER / GAS BARRIER
�OCa�M
VaporBlock® PIUSTM is a seven -layer co -extruded barrier made
using high quality virgin -grade polyethylene and EVOH resins to
provide unmatched impact strength as well as superior resistance
to gas and moisture transmission.
Note: To the best of our knowledge, unless otherwise stated, these are typical property values and are intended as guides only, not as specification
W.�
limits. Chemical resistance, odor transmission, longevity as well as other performance criteria is not implied or given and actual testing must
be performed for applicability in specific applications and/or conditions. RAVEN INDUSTRIES MAKES NO WARRANTIES AS TO THE FITNESS
FOR A SPECIFIC USE OR MERCHANTABILITY OF PRODUCTS REFERRED TO, no guarantee of satisfactory results from reliance upon contained
information or recommendations and disclaims all liability for resulting loss or damage. Limited Warranty available at www.RavenEFD.com
L.t.Y ti RAVEN ENGINEERED FILMS
Scan QR Code to download P.O. Box 5107 Sioux Falls, SD 57117-5107 [e-mail]
current technical data sheets Ph: [phone] • TF: [phone] www.ravenefd.com
Via the Raven website. 0 2018 RAVEN INDUSTRIES INC. All rights reserved. 061318 EFD 1125

TM
\V7
o�k7 Pdm��3
PoCDTtsl
DERSI_AB VAPOR RETARDER f GAS BARRIER
Please Note: Read these instructions thoroughly before
installation to ensure proper use of VaporBlock®
Fftvb.-M =_
PlusT". ASTM E 1465, ASTM E 2121 and, ASTM E
:'_ '•wc
1643 also provide valuable information regarding the""°'
.'.z
t
installation of vapor / gas barriers. When installing this
product, contractors shall conform to all applicable
wok'h'
local, state and federal regulations and laws pertaining
to residential and commercial building construction.
• When VaporBlock® PIUSTM gas barrier is used
as part of an active control system for radon or
F �
other gas, a ventilation system will be required.
`°''„"' c
• Ifdesigned as a passive system, it is recommended
z, bxu, , v.•rru_
, '
to install a ventilation system that could be
converted to an active system if needed.
i 'N""""
Materials List:,
VaporBlock® PlusT"" Vapor / Gas Barrier
FEW M� ^�++�
VaporSeall* 4" Seaming Tape
9'"0" �
VaporSealTM*12"Seaming/Repair Tape
a-F
Butyl Seal 2-Sided Tape
c«brr.0
��
VaporBoot Plus Pipe Boots 12/Box (recommended)
okwM , � �,ba
°"°°"'p ��+" nitlUbI*m k"" *x + +� + °
VaporBoot Tape (optional)
1'rvo-�atl c* + f.*h r. 73 � I. � 1 WNIAbAbN W9
�Id*a"'"°f l
POUR-N-SEALT"' (optional)
1" Foam Weather Stripping (optional)
Elements of a moisture/gas-resistant floor system. General illustration only.
Mako® Screed Supports (optional)
(Note: This example shows multiple options for waterstop placement.
Level and tamp or roll granular base as specified. A base for a gas -
reduction system may require a 4" to 6" gas permeable layer of clean
coarse aggregate as specified by your architectural or structural
drawings after installation of the recommended gas collection system.
In this situation, a cushion layer consisting of a non -woven geotextile
fabric placed directly under VaporBlock® PlusTM' will help protect the
barrier from damage due to possible sharp coarse aggregate.
1.2. Unroll VaporBlock® Plus'" running the longest dimension parallel with
the direction of the pour and pull open all folds to full width. (Fig. 1)
1.3. Lap VaporBlock® Plus'" over the footings and seal with Raven Butyl
Seal tape at the footing -wall connection. Prime concrete surfaces,
when necessary, and assure they are dry and clean prior to applying
Raven Butyl Seal Tape. Apply even and firm pressure with a rubber
roller. Overlap joints a minimum of 6" and seal overlap with 4"
VaporSeal" Tape. When used as a gas barrier, overlap joints a
minimum of 12" and seal in-between overlap with an optional 2-sided
Raven Butyl Seal Tape. Then seal with 4" VaporSeal'" Tape centered on
the overlap seam. (Fig. 2)
Fig. 1: VaporBlock® Plus'" Overlapping Roll -out Method
VaporSeal-4"Tape Optional Butyl Seal VaporSeal""
2-Sided Tape 4"Tape
12" —�
VaporRelainderApplirgions Gas Barrier Applications
Fig. 2: VaporBlock® Plus'" Overlap Joint Sealing Methods
FOf
Page 1 of 4

1.4. Seal around all plumbing, conduit, support columns or other
penetrations that come through the VaporBlock® Plus'" membrane.
1.4a. Method 1: Pipes four inches or smaller can be sealed with Raven
VaporBoot Plus preformed pipe boots. VaporBoot Plus preformed
pipe boots are formed in steps for 1", 2", 3" and 4" PVC pipe or IPS size
and are sold in units of 12 per box (Fig. 3 & 5).
Pipe boots may also be fabricated from excess VaporBlock® Plus -
membrane (Fig. 4 & 6) and sealed with VaporBoot Tape or VaporSeal'"
Tape (sold separately).
1.4b. Method 2: To fabricate pipe boots from VaporBlock® Plus'"" excess
material (see Fig. 4 & 6 for A-F):
A) Cut a square large enough to overlap 12" in all directions.
B) Mark where to cut opening on the center of the square and cut four
to eight slices about 3/8" less than the diameter of the pipe.
C) Force the square over the pipe leaving the tightly stretched cut area
around the bottom of the pipe with approximately a 1/2" of the
boot material running vertically up the pipe. (no more than a 112" of
stretched boot material is recommended)
D) Once boot is positioned, seal the perimeter to the membrane by
applying 2-sided Raven Butyl Seal Tape in between the two layers.
Secure boot down firmly over the membrane taking care not to
have any large folds or creases.
E) Use VaporBoot Tape or VaporSealT" Tape to secure the boot to the
pipe.
VaporBoot Tape (option) — fold tape in half lengthwise, remove half
of the release liner and wrap around the pipe allowing 1" extra for
overlap sealing. Peel off the second half of the release liner and
work the tape outward gradually forming a complete seal.
VaporSeaTMT°" Tape (option) - Tape completely around pipe
overlapping the VaporBlock® Plus- square to create a tight seal
against the pipe.
F) Complete the process by taping over the boot perimeter edge with
VaporSeal- Tape to create a monolithic membrane between the
surface of the slab and gas/moisture sources below and at the slab
perimeter. (Fig. 4 & 6)
VaporSealT"^
4" T,
Preformed Pipe Boot
da
VaporBoot Plus
Performed Boot
Raven Butyl Seal 2-sided Tape
C*.— c
1. Cut out one of the
preformed boot steps
(V to 4").
2. Tape the underside boot
perimeter with 2-sided
Butyl Seal Tape.
3. Force the boot over
Ad. r- pipe and press tape
firmly in place.
4. Use VaporSeal- Tape
to secure boot to the
pipe.
5. Tape around entire boot
' edge with VaporSealT""
Tape.
Method 1
1. Cut a square of VaporBlock® 2. Cut four to eight slices about 3/8"
Plus'"" barrier to extend at least less than the diameter of the pipe.
12" from the pipe in all directions.
3. Force over pipe and tape the
underside boot perimeter to
existing barrier with 2-sided
Butyl Seal Tape.
4. Tape over the boot
perimeter edge with
AMW VaporSealT"" Tape.
5. Use Raven VaporBoot or
VaporSealTM' Tape and
overlap 1" at the seam.
Method 2
Fin_ d
Square Material Pipe Boot
VaporBoot Flexible Tape
VaporSeal- or VaporSealT" 4" Tape
4" Tape
12" LZ VaporBlock&
(minimum)
JI Material
Raven Butyl Seal 2-sided Tape
Ci- A
Page 2 of 4

1.5. Sealing side -by -side multiple penetrations (option 1);
A) Cut a patch large enough to overlap 12" in all directions (Fig. 7)
of penetrations.
B) Mark where to cut openings and cut four to eight slices about
3/8" less than the diameter of the penetration for each.
C) Force patch material over penetration to achieve a tight fit and
form a lip.
D) Once patch is positioned, seal the perimeter to the membrane
by applying 2-sided Raven Butyl Seal Tape in-between the two
layers. (Fig. 8)
E) After applying Raven Butyl Seal Tape between the patch and
membrane, tape around each of the penetrations and the patch
with VaporSeal'" 4" tape. (Fig. 9) For additional protection apply
POUR-N-SEAL'" or an acceptable polyurethane elastomeric
sealant around the penetrations. (Fig. 10)
Cut a patch large
enough to overlap
12" in all directions
and slide over
penetrations (Make
openings as tight
as possible.)
CL. 7
After applying Raven
Butyl Seal Tape
between the patch
and membrane, tape
around the perimeter
of the penetration
and the patch with
VaporSeal-
4" Tape. ru ru ru ru
Fin_ 9
Option 1
Raven Butyl Seal 2-sided Tape
Fin A
Once the overlay
patch is positioned,
seal the perimeter
to the membrane
by applying 2-sided
Raven Butyl Seal
Tape in-between the
two layers.
,r
For additional protection
apply POUR-N-SEAL'"' or
an acceptable polyurethane
elastomeric sealant around
the penetrations.
Fin R
Fin 1 n
Page 3 of 4

Option 2
1.6. POUR-N-SEALT" method of sealing side -by -side multiple penetrations
(option 2);
A) Install the vapor barrier as closely as possible to pipe penetrations to
minimize the amount of POUR-N-SEAL'' necessary to seal around all
penetrations.
B) Once barrier is in place, remove soil or other particles with a dry cloth
or a fine broom to allow for improved adhesion to the POUR-N-
SEALT" liquid.
C) Create a dam around the penetration area approximately 2" away
from the pipe or other vertical penetrations by removing the release
liner from the back of a 1" weather stripping foam and adhere to the
vapor barrier. Form a complete circle to contain the POUR-N-SEALT"
materials (Fig.11).
D) Once mixed, pour contents around the pipe penetrations. If needed,
a brush or a flat wooden stick can be used to direct the sealant
completely around penetrations creating a complete seal (Fig.12-13).
E) DO NOT leave excess POUR-N-SEALT" in plastic container for longer
than the time it takes to pour sealant.
Fig. 12
1.7. Proper installation requires all holes and openings are repaired prior
to placing concrete. When patching small holes, simply cut a 12" long
piece of 12" wide VaporSealT" tape. Remove release liner and center
over the opening. Apply pressure to create a seal (Fig. 14-15).
1.8. When installing VaporBlock® Plus' around pipe penetrations,
vertical columns, electrical ducts and other obstructions, you will
find it necessary to cut it to the nearest outside edge. This cut can
be easily sealed with 12" wide VaporSeal- tape, by simply centering
it over the cut, 6" on either side. Once the tape is placed correctly,
apply pressure to assure a complete seal (Fig. 16).
Reminder Note: All holes or penetrations through the membrane will need
to be patched with 12" VaporSealTM' Tape.
C*.- 11
Fig. 13
r;- 1 d
E*.- 7
Page 4 of 5

2.1. When installing reinforcing steel and utilities, in addition to the
placement of concrete, take precaution to protect VaporBlock®
Plus". Carelessness during installation can damage the most
puncture —resistant membrane. Sheets of plywood cushioned with
geotextile fabric temporarily placed on VaporBlock® Plus- provide
for additional protection in high traffic areas including concrete
buggies.
2.2. Use only brick -type or chair -type reinforcing bar supports to protect
VaporBlock® Plus" from puncture.
2.3. Avoid driving stakes through VaporBlock® PIUSTM. If this cannot be
avoided, each individual hole must be repaired per section 1.7.
2.4. To avoid penetrating VaporBlock® PlusTM' when installing screed
supports, utilize non -penetrating support, such as the Mako®
Screed Support System (Fig. 17). Avoid driving stakes through
VaporBlock® PlusT". If this cannot be avoided, each individual hole
must be repaired per figures 14-15.
2.5. If a cushion or blotter layer is required in the design between
VaporBlock® PIusTm and the slab, additional care should be given if
sharp crushed rock is used. Washed rock will provide less chance of
damage during placement. Care must be taken to protect blotter layer
from precipitation before concrete is placed.
VaporBlock® PlusT' Gas & Moisture Barrier can be identified on site
as gold/white in color printed in black ink with following logo and
classification listing (Fig. 18)
VaporBlock® PlusT""
Gas & Moisture Barrier
* Patent Pending
C;_ 14
ri- 17
Vapor B lock° Plus"
Fig. 18
Note: To the best of our knowledge, unless otherwise stated, these are typical property values and are intended as guides only, not as specification
limits. Chemical resistance, odor transmission, longevity as well as other performance criteria is not implied or given and actual testing must be
performed for applicability in specific applications and/or conditions. RAVEN INDUSTRIES MAKES NO WARRANTIES AS TO THE FITNESS FOR
A SPECIFIC USE OR MERCHANTABILITY OF PRODUCTS REFERRED TO, no guarantee of satisfactory results from reliance upon contained
information or recommendations and disclaims all liability for resulting loss or damage. Limited Warranty available at wwww.RavenEFD.com
ENGINEERED FILMS
P.O. Box 5107 Sioux Falls, SD 57117-5107
Ph: [phone] • TF: [phone]
[e-mail]
www.ravenefd.com
© Raven 2016. All Rights Reserved. Page 5 of 5
020316 EFD 1127

Pnomsionni Discouni supm
Made in
the USA
SOIL GAS COLLECTOR MAT
Installation Guide
Radon Ready New Construction
Time -saving, low-cost solution
Easy Installation
Reduce Liability!
Used in all 50 states and
Internationally
Complian under multiple codes:
AARST-ANSI, ASTM,
IRC Appendix F,
EPA, HUD, and more!
Simple, modern solutions for soil
gases: radon, vapor, and VOCs
Photos, vic
.Rw
v_
..� __ •- i-�+- is ii�+. .'Y .. .-.J
t�• L � rr�_�ir�

SOIL GAS COLLECTOR MAT FOR
RADON READY NEW CONSTRUCTION
According to the US EPA's model stan-
dards for radon control systesm in new
building construction, a means for col-
lecting soil gas should be installed be-
neath the slab.
More and more mitigators and buildiers
are using PDS' soil gas collector mat
because its installation does not entail
any special coordination with plumb-
ers or other site contractors. Low pro-
file mat saves time as it removes the
need for trenching. Just lay radon mat
down around the inside perimeter of
the foundation, secure it with spikes or
landscaping staples, and pour the con-
crete.
SGC mat is superior to other mat sys-
tems because of its thickness and it
has a geotextile fabric cloth surround-
ing the entire mat material. This fea-
ture eliminates the ened to lay a plas-
tic barrier or sheet on top of the mat
to protect the matrix. Using plastic
sheeting can cause concrete cracking
due to differential dewatering. The full
fabric design greatly enhances both the
installation as well as the quality of the
concrete slab. When SGC mat is in-
stalled below the slab, you're providing
an airspace that intercepts radon --and
other soil gases and vapors --before
it seeps into the building through the
slab. SGC mat also works well as a soil
gas collector beneath crawlspace bar-
rier due to its low -profile.
The matting is a one inch high by
twelve inch wide matrix enveloped in
a geotextile filter fabric. 90% of the
geomatrix is airspace, which means
soil gas has room to move to the col-
lection point. This creates incredible
pressure field extension for post con-
struction system activation. The mat
can support concrete without com-
pressing, yet is extremely lightweight
and easy to handle.
This system allows for radon to flow
through teh filter fabric and into the
airspace. The airspace does not clog
because the filter fabric retains teh
underlying gravel and soil. The natural
airflow through the mat then channels
the radon to the T riser to pipe connec-
tion. From there, hazardous gas can be
vented safely through the roof of the
building.
Another key element of a soil gas col-
lection system is attaching the 4" riser
to the mat, such that airflow is not
restricted at this critical juncture. The
soil gas T riser is unique as it has three
ports, two redundant mat entries and
one PVC connection to outside air. This
unique fitting connects all three sides
without special connections or fittings.
common duct tape and caulk does the
trick.

NO TRENCHING
NO BACKFILL
NO VAPOR BARRIER*
It's called SOIL gas mat for a reason,
Place directly on soil or substrate.
,r
Low -profile (1" thick) gas mat
does not require trenching. �
RM,

INSTALLATION INSTRUCTIONS
1. Begin work on the sub grade (soil or gravel) after the final preparation and
before the concrete is poured. Start with T-Riser(s) and work out to ensure
smooth mat placement. Position the T-Riser(s) in appropriate location(s) and
nail down with a 12" steel nail (T Nail) through precut center hole.
2. Slide mat into flat openings on either end of T-riser with a portion of the fab-
ric around the outside. Tape the fabric to the outside of the T-Riser with duct
tape and staple mat to the ground with landscape staples to ensure soil contact
remains during pour stage.
3. Mat is typically laid out in a rectangular loop in the largest area with branch-
es or legs into smaller areas (FREE plan design at www.radon mat.com). There
is no need to trench the mat. Roll out the SGC mat, smooth it onto the ground.
To avoid wrinkles and buckling, work away from the risers, stapling to the
ground as you go. The mat should be stapled every three to four feet, in addi-
ton to corners, tee junctions & ends.
5. Corners are constructed by peeling back the filter fabric, cutting two ends
of the matrix at 45 degree angles and butting (or overlapping: no more than
1/2") the matrix together. Pull the filter fabric back and tape into place. Staple
across the joint of the matrix and each leg of the corner. Use a minimum of
four staples at each corner-- two across the joint and one on each leg.
6. The tees for branches and legs are constructed by slitting the fabric of the
main loop at the location desired. Cut the fabric of the branch at the edges and
expose two inces of the matrix. Cut off the exposed matrix and but the ma-
trix of the branch (or overlap 1/2")to the matrix of hte main loop. Pull the flter
fabric of the branch back over the main loop and tape into place. Staple across
joint of the matrix with two staples and one each on the branch and main loop.
Use a minimum of four staples at each tee, two across the joint and one on
each loop and branch.

7. All openings in the fabric at joints, tee's, and ends of branches should be
taped to keep out concrete.
8. Stub up a few feet of 4" schedule 40 PVC* from all T risers before pour (or
cover T riser with duct tape). Seal with polyurethene caulk and screws. This
ensures no concrete aggregate enters the riser during slab pour. Be sure to
label "CAUTION RADON REDUCTION SYSTEM" on all pipe. *(6" PVC may be
substituted --for large multifamily projects. Simply cut T riser 4" insert away to
reveal 6" insert).
9. When the building is ready for the vent pipe to be installed above the slab,
fit to pre -stubbed PVC with PVC straight connect. If PVC was not preset, cut
duct tape from riser and insert 4" PVC pipe now. Seal with polyurethene caulk
and secure with screws. Always label "CAUTION RADON REDUCTION SYSTEM"
to avoid confusion on site and for the building occupants.
note: The openings in the riser are laid out at 180 degrees to accomodate
straight runs of mat. However, if the riser is to be placed in a corner, which is
not uncommon, the front of the T can be cut and the SGC mat inserted into
the new opening. The side of the T that is unused should be sealed with tape.
This creates a 90 degree T which will allow corner placement for the riser. Mat
should always enter the T riser from at least two directions and exhaust to pipe
vertically.

MAKING CORNERS AND SPLICES
The mat should be routed around the inside perimeter of the foundation. This
will require occasional corner junctions. Furthermore, splices will have to be
made to join two lengths of mat together. Corners and splices are very easy to
make, and do not require any special fittings. Cut back the filter fabric to reveal
the core material. In the case of a splice, merely overlap the core by at least
one corrugation, replace the cloth, and tape it. Use two landscape staples to
hold the splice in place. In the case of a corner, peel back geotextile fabric and
slice the core of the two adjoining legs at 45 degree angles which mirror each
other; overlap the edges by one corrugation; return grey geotextile fabric, tape
and staple the corner together.

A convenient T-riser with dual entry al-
lows for either end of the loop of mat
to be secured to the riser. Slide the
mat into each end of the riser and tape
the edge to prevent wet concrete from
entering. Cap the riser to ensure no
concrete enters. T Riser caps can be
purchased in leui of duct tape. A pres-
tub of PVC pipe can also serve the same
purpose. See steps 8-9 of the previous

TRENCH & FOOTER CROSSINGS
FLAT OUTLET
SGC to PVC transition
SIDE VIEW GOING THRU FOOTER/ INTERMEDIATE WALL
SOIL GAS MAT
PVC PIPE
SOIL GAS MAT
GRAVEL OR SOIL UNDER MAT
FOOTER/INTERMEDIATE WALL/ TRENCH
TOP VIEW GOING OVER FOOTE R/WALL/TRE N CH
4" sch. 40 PVC PIF
GRAVEL OR SOIL UNDER MAT

STEEL SLEEVE
24" (36") x 1" x 12"
SIDE VIEW GOING THRU FOOTER/ INTERMEDIATE WALL
SOIL GAS MAT
STEEL SLEEVE 1" thick
SOIL GAS MAT
i 7
GRAVEL OR SOIL UNDER MAT
FOOTER/INTERMEDIATE WALL/ TRENCH
TOP VIEW GOING OVER FOOTER/WALL/TRENCH
Soil Gas Mat
u
�
w
�
w—
STEEL SLEEVE
available in 24" or 36"
u
z
w
Soil Gas Mat
GRAVEL OR SOIL UNDER MA-r

POURING CONCRETE
The filter fabric that comes sewn around the soil gas collector prevents the wet
concrete from entering the mat and reducing its air collection capacity. The
only precaution that needs to be taken is that the fabric is duct taped closed at
seams of splices and corner to sufficiently keep the uncured concrete from en-
tering.
The mat also needs to be secured to the soil with landscape staples to prevent
the concrete from lifting off the soil while it is being applied. Re -enforcing bars
and wire can be laid on top of the mat.
Note: the mat is strong enough (4,300 psf) to withstand concrete workers and
their wheel barrows.

radon -induced lung cancer
claims the lives of
over 22,000 Americans each year
FACT: Radon is found in all 50 US states. The US EPA action level
is 4.0 pci/L or higher
FACT: Homes without basements are still at risk
FACT: Radon is the leading cause of lung cancer among "never smokers"
FACT: Radon is a natural part of the Uranium 238 breakdown chain
FACT: Breathing 6.2 pci/L is the equivalent radiation dosage of
a chest x-ray every other day for your lungs
FACT: Radon is colorless, odorless and invisible to the naked eye
FACT: Radon testing is cheap and you can do it yourself
get the facts C&

Professional Discount Supply I Radon
Family -owned and operated since 1996. Situated on Colorado's front range,
PDS focuses on generating radon awareness through one-on-one technical
support and trouble -shooting.
We're always just
a phone call away.
719-444-0646
1902 Aerotech Drive, Ste 110
Colorado Springs, CO 80916
Distribution opportunities available, Made in
the USA
Please call for availability in your market 16

Model: AV-3-PVC 3" Diameter Aura Ventilator with PVC Adaptor
This adaptor is designed to retrofit onto PVC pipes schedule 40 & 80
Seamless Sr ` --
Inside
4" [10.1
1/8" [0.32c
Outside L
4"[10.16cr
1 /4" [0.64cm] C
Head Width
Overall Height
7 3/4" [19.68cm]
Inside Diameter
of Adaptor
3 5/8" [9.21 cm]
Diameter
of Vent
4" [10.16cm]
Net free area
square inches [cm]
square foot [meters]
12 [30.48]
0.09 [0.03]
0 Active Ventilation Products, Inc.
311 First Street, Newburgh, NY 12550-4857
800-ROOF VENT (766-3836) Ph: 845-565-7770 Fax: [phone]
Website: roofvents.com Email: [e-mail] 5778-6

Appendix C
VIMS Installation Photographs
10
hart hickman
SMARTER ENV,RONMERFA: SORMOUS

Photograph l : Representative view of gravel layer, soil gas collector mat, and monitoring point
installation in the southern slab.
Photograph 2: Representative view of the gravel and soil gas collector mat in the northern slab.
2923 S. Tryon Street, Suite 100 BOOKERS GARAGE
hart 1 hickman Charlotte, NC 28203 1113-1121 SEIGLE AVE & 820 E. 15t" STREET
704.586.0007(p) 704.586.0373(f) CHARLOTTE, NORTH CAROLINA

Photograph 3: Representative view of Raven VaporBlock20 (VBP20) installed below the slab.
Photograph 4: Representative view of VBP20 sealed to pipe penetrations.
2923 S. Tryon Street, Suite 100 BOOKERS GARAGE
hart 1 hickman Charlotte, NC 28203 1113-1121 SEIGLE AVE & 820 E. 15t" STREET
704.586.0007(p) 704.586.0373(f) CHARLOTTE, NORTH CAROLINA

0
0
U_
U
Ch
"Vapor Mitigation
Contact Building Maintenance"
c
0
Photograph 5: Representative view of vertical riser piping with proper pitch and adequate labeling.
Photograph 6: Wind -driven ventilators installed on the roof of the northern building.
2923 S. Tryon Street, Suite 100 BOOKERS GARAGE
hart ^• hickman Charlotte, NC 28203 1113-1121 SEIGLE AVE & 820 E. 15t" STREET
704.586.0007(p) 704.586.0373(f) CHARLOTTE, NORTH CAROLINA

Appendix D
Field Forms
10 hart T hackman
SMARTER ENORONMERFA: SORMOUS

Table D-1
VIMS Pilot Test
Bookers Garage
Charlotte, North Carolina
Brownfields Project No. 23074-19-060
H&H Job No. SCF-001
Vacuum Monitoring Point Measurements
(in -WC)
Area
Southern Slab
Northern Slab
Date
4/18/2022
4/18/2022
Monitoring
Location
Fan
Fan
Monitoring Point
Point
Elapsed Time
E-1
MP-1
E-2
E-3
MP-2
MP-3
mins
0
0.000
1 0.000
0.000
0.000
1 0.000
0.000
15
-2.237
-1.247
-2.418
-2.388
-1.895
-1.805
Notes
Vacuum measurements are reported in inches of water column (in -WC).
mins = minutes
Fan Utilized: RadonAway RP265
Table D-1 (Page 1 of 11)
https://harthick.sharepoi nt.com/sites/MasterFiles-1/Shared Documents/AAA-Master Projects/SpaceCraft (SCF)/SCF-001 Bookers Garage/VIMS/Pilot Testing/Pilot Testing_4.18.22 Hart & Hickman, PC

Sub -Slab / Soil Gas Vapor Installation Field Form
Project No.: SCF-001 Sampler: JIL Weather:
70s & sunn
MP Purge Volumes (Liters)
D=1"
D=2"
MP Length
1 Volume
3 Volume
1 Volume
3 Volume
1'
0.2
0.5
0.6
1.9
3'
0.5
1.4
1.9
5.6
5'
0.8
2.3
3.1
9.3
7'
1.1
3.2
4.3
13.0
* GilAir pump reads in L/min
Form SV-1
Vapor Monitoring Point Construction
Helium Leak Test
Surface
Slab
Material Below
Depth of
Ambient
Volume
Shroud
Purge
Leak Test
Sample ID
Type
Material
Thickness (if
Slab
Screen
Type
Date & Time
Temp.
Purge Method
Purged
Helium
Helium Conc.
Pass?
appl.)
(if appl.)
(if appl.)
Conc.
(see note)
SS, SG
Perm.,
Concrete, soil,
Inches
Gravel, sand,
ft bgs
Full sample train or
mm/dd/yy
of
Syringe, pump
Liters
(see notes
%
% or ppm
(indicate units
Yes / No
Temp.
gravel, asphalt
clay, etc.
point -only
24-hr
for calc.)
below
S: MP-1
c: 2888
SS
Perm.
Conc.
4
Gravel
NA
Full
10/17/22
75
Pump18.5
15.2
0 m
pp
Yes
1333
R: 4469
S: MP-2
c: 2896
SS
Perm.
Conc.
4
Gravel
NA
Full
10/17/22
76
Pump
13.0
15.6
0 ppm
Yes
R: 4470
1416
S: MP-3/DUP
C: 2885/2787
SS
Perm.
Conc.
4
Gravel
NA
Full
10/17/22
76
Pump
13.0
15.8
0 ppm
Yes
1450
R: 4750
S:
c:
R:
S:
c:
R:
S:
c:
R:
S = sample ID; G = canister IU; K = regulator IU; SS = sub -slab; SG = soil gas; Nerm = permanent; I emp = temporary;
" Hg = inches of mercury; ppm = parts per million
Volume Nurged = x3 purge volumes = 3'L`a Last updated: 8/26/2022
L = length of tubing/pipe (ft)
a = 0.163 for 2" diameter (Uft)
= 0.010 for 0.25" diameter (L/ft)
Note: Leak Test Requirements Notes:
hart = hiCkma n Per NC DEQ DWM Vapor Intrusion Guidance, leak test passes if helium
concentration in purge air is less than 10% of helium concentration in
SMARTER ENVIRONMENTAL SOLUTIONS shroud.
Sub -Slab / Soil Gas Sampling Vapor Installation Field Form
S:\BBBM.Aer empl.es\Forms-2022Fonm\V.porw rk\SSInsGll.tion Form -2.pw Hart & Hickman, PC

Form SV-2
Sub -Slab / Soil Gas Vapor Sampling Field Form
Project No.: SCF-001
Sampler:
JL Weather:
70s & sunny
Sampling Information
Outdoor Parameters
Indoor Parameters
Sam le ID
p
Date
Proposed
Sampling
Duration
Sampling
Period
Time
Canister
Pressure
Outdoor
Temperature
Outdoor
Humidity
Indoor
Temperature
Indoor
Humidity
mm/dd/yy
Minutes
24-hr
" Hg
of
%
of
%
S: MP-1 Size: 1 L
c: 2888
10/17/22
10
Beginning
1343
-28
75
49
-
-
Middle
1348
-17
R: 4469 Flow Rate: 100 mL/min
End
1353
-5
S: MP-2 Size: 1 L
c: 2896
10/17/22
10
Beginning
1423
-27
76
47
-
-
Middle
1428
-16
R: 4470 Flow Rate: 100 MIL/min
End
1433
-5
S: MP-3/DUP Size: 1 L
Beginning
1457
-28.5
Middle
1503
-15
c: 2885/2787
10/17/22
10
76
47
-
-
R: 4750 Flow Rate: 100 mL/min
End
1507
-5
S:
Beginning
Size:
Middle
c:
R: Flow Rate:
End
S:
Beginning
Size:
Middle
c:
R: Flow Rate:
End
S:
Beginning
Size:
Middle
c:
R: Flow Rate:
End
5 = sample IU; U = canister IU; K = regulator lU; 55 = sub -slab; 5t; = sou gas; Nerm = permanent; 1 emp = temporary
" Hg = inches of mercury
hart '-4 hickman
-
SMARTER ENVIRONMENTAL SOLUTIONS
Note:
Per NC DEQ DWM Vapor Intrusion Guidance,
shut-in test and helium leak check must be
passed before sampling.
Notes:
Last updated: 8/26/2022
Sub -Slab / Soil Gas Sampling Vapor Sampling Field Form
S:\BBB Master Temp1ates\Forms-2022 Forms\Vapor Work\SS Sam piing Form_V6.2 Hart & Hickman, PC

Appendix E
Laboratory Analytical Reports
10 Dart hickman
SMARTER ENOPONMERFM, SORMOUS

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
October 26, 2022
Alexis McKenzie
Hart & Hickman - Charlotte, NC
2923 South Tryon Street, Suite 100
Charlotte, NC 28203
Project Location: Charlotte, NC
Client Job Number:
Project Number: SCF-001
Laboratory Work Order Number: 22J2672
Enclosed are results of analyses for samples as received by the laboratory on October 19, 2022. If you have any questions
concerning this report, please feel free to contact me.
Sincerely,
Kerry K. McGee
Project Manager
QA Officer
Katherine Allen
Laboratory Manager
Daren Damboragian
Page 1 of 26

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
Hart & Hickman - Charlotte, NC REPORT DATE: 10/26/2022
2923 South Tryon Street, Suite 100
Charlotte, NC 28203 PURCHASE ORDER NUMBER: SCF-001
ATTN: Alexis McKenzie
PROJECT NUMBER: SCF-001
ANALYTICAL SUMMARY
WORK ORDER NUMBER: 22J2672
The results of analyses performed on the following samples submitted to Con -Test, a Pace Analytical Laboratory, are found in this report.
PROJECT LOCATION: Charlotte, NC
FIELD SAMPLE # LAB ID: MATRIX SAMPLE DESCRIPTION TEST SUB LAB
MP-1
22J2672-01
Sub Slab
EPA TO-15
MP-2
22J2672-02
Sub Slab
EPA TO-15
MP-3
22J2672-03
Sub Slab
EPA TO-15
MP-DUP
22J2672-04
Sub Slab
EPATO-15
Page 2 of 26

con -test®
A Pace Analytical Laboratory
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:
L-03 Laboratory fortified blank/laboratory control sample recovery is outside of control limits. Reported value for this compound is likely to be
biased on the low side.
Analyte & Samples(s) Qualified:
Ethanol, Isopropanol, Vinyl Acetate
22J2672-01[MP-1], 22J2672-02[MP-2], 22J2672-03[MP-3], 22J2672-04[MP-DUP], B321163-BLKI, B321163-BS1
RL-11 Elevated reporting limit due to high concentration of target compounds.
Analyte & Samples(s) Qualified:
22J2672-01[MP-1], 22J2672-02[MP-2], 22J2672-03[MP-3], 22J2672-04[MP-DUP]
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.
Tod E. Kopyscinski
Laboratory Director
Page 3 of 26

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 10/19/2022
Field Sample #: MP-1
Sample ID: 22J2672-01
Sample Matrix: Sub Slab
Sampled: 10/17/2022 13:53
Sample Description/Location:
Sub Description/Location:
Canister ID: 2888
Canister Size: 1 liter
Flow Controller ID: 4469
Sample Type: 10 min
Work Order: 2232672
Initial Vacuum(in Hg): -28
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -7.1
Flow Controller Type: Fixed -Orifice
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
Sample Flags: RL-I I
ppbv
ug/m3
Date/Time
Analyte
Results
RL
MDL
Flag/Qual
Results
RI
MDL
Dilution
Analyzed
Analyst
Acetone
50
20
12
120
48
29
10
10/26/22 8:46
CMR
Benzene
ND
0.50
0.38
ND
1.6
1.2
10
10/26/22 8:46
CMR
Benzyl chloride
ND
0.50
0.44
ND
2.6
2.3
10
10/26/22 8:46
CMR
Bromodichloromethane
ND
0.50
0.35
ND
3.4
2.3
10
10/26/22 8:46
CMR
Bromoform
ND
0.50
0.34
ND
5.2
3.5
10
10/26/22 8:46
CMR
Bromomethane
ND
0.50
0.33
ND
1.9
1.3
10
10/26/22 8:46
CMR
1,3-Butadiene
ND
0.50
0.42
ND
1.1
0.93
10
10/26/22 8:46
CMR
2-Butanone (MEK)
400
20
5.3
1200
59
16
10
10/26/22 8:46
CMR
Carbon Disulfide
ND
5.0
0.46
ND
16
1.4
10
10/26/22 8:46
CMR
Carbon Tetrachloride
ND
0.50
0.40
ND
3.1
2.5
10
10/26/22 8:46
CMR
Chlorobenzene
ND
0.50
0.33
ND
2.3
1.5
10
10/26/22 8:46
CMR
Chloroethane
ND
0.50
0.44
ND
1.3
1.2
10
10/26/22 8:46
CMR
Chloroform
ND
0.50
0.48
ND
2.4
2.3
10
10/26/22 8:46
CMR
Chloromethane
0.73
1.0
0.40
J
1.5
2.1
0.82
10
10/26/22 8:46
CMR
Cyclohexane
ND
0.50
0.30
ND
1.7
1.0
10
10/26/22 8:46
CMR
Dibromochloromethane
ND
0.50
0.33
ND
4.3
2.8
10
10/26/22 8:46
CMR
1,2-Dibromoethane (EDB)
ND
0.50
0.30
ND
3.8
2.3
10
10/26/22 8:46
CMR
1,2-Dichlorobenzene
ND
0.50
0.29
ND
3.0
1.7
10
10/26/22 8:46
CMR
1,3-Dichlorobenzene
ND
0.50
0.28
ND
3.0
1.7
10
10/26/22 8:46
CMR
1,4-Dichlorobenzene
ND
0.50
0.33
ND
3.0
2.0
10
10/26/22 8:46
CMR
Dichlorodifluoromethane (Freon 12)
ND
0.50
0.49
ND
2.5
2.4
10
10/26/22 8:46
CMR
1, 1 -Dichloroethane
ND
0.50
0.44
ND
2.0
1.8
10
10/26/22 8:46
CMR
1,2-Dichloroethane
ND
0.50
0.45
ND
2.0
1.8
10
10/26/22 8:46
CMR
1, 1 -Dichloroethylene
ND
0.50
0.38
ND
2.0
1.5
10
10/26/22 8:46
CMR
cis-1,2-Dichloroethylene
0.40
0.50
0.36
J
1.6
2.0
1.4
10
10/26/22 8:46
CMR
trans-1,2-Dichloroethylene
ND
0.50
0.39
ND
2.0
1.6
10
10/26/22 8:46
CMR
1,2-Dichloropropane
ND
0.50
0.27
ND
2.3
1.3
10
10/26/22 8:46
CMR
cis- 1,3 -Dichloropropene
ND
0.50
0.26
ND
2.3
1.2
10
10/26/22 8:46
CMR
trans- 1, 3 -Dichloropropene
ND
0.50
0.26
ND
2.3
1.2
10
10/26/22 8:46
CMR
1,2-Dichloro- 1, 1,2,2-tetrafluoroethane (Freon 114)
ND
0.50
0.49
ND
3.5
3.4
10
10/26/22 8:46
CMR
1,4-Dioxane
ND
5.0
0.42
ND
18
1.5
10
10/26/22 8:46
CMR
Ethanol
ND
20
8.8
L-03
ND
38
17
10
10/26/22 8:46
CMR
Ethyl Acetate
ND
5.0
2.5
ND
18
9.1
10
10/26/22 8:46
CMR
Ethylbenzene
ND
0.50
0.29
ND
2.2
1.3
10
10/26/22 8:46
CMR
4-Ethyltoluene
ND
0.50
0.31
ND
2.5
1.5
10
10/26/22 8:46
CMR
Heptane
ND
0.50
0.32
ND
2.0
1.3
10
10/26/22 8:46
CMR
Hexachlorobutadiene
ND
0.50
0.41
ND
5.3
4.4
10
10/26/22 8:46
CMR
Hexane
ND
20
2.6
ND
70
9.2
10
10/26/22 8:46
CMR
2-Hexanone (MBK)
ND
0.50
0.25
ND
2.0
1.0
10
10/26/22 8:46
CMR
Isopropanol
3.5
20
3.4
L-03, J
8.6
49
8.5
10
10/26/22 8:46
CMR
Methyl tert-Bury] Ether (MTBE)
ND
0.50
0.39
ND
1.8
1.4
10
10/26/22 8:46
CMR
Methylene Chloride
ND
5.0
2.3
ND
17
8.1
10
10/26/22 8:46
CMR
4-Methyl-2-pentanone (MIBK)
ND
0.50
0.27
ND
2.0
1.1
10
10/26/22 8:46
CMR
Naphthalene
ND
0.50
0.38
ND
2.6
2.0
10
10/26/22 8:46
CMR
Propene
ND
20
4.4
ND
34
7.6
10
10/26/22 8:46
CMR
Styrene
1.1
0.50
0.26
4.8
2.1
1.1
10
10/26/22 8:46
CMR
1,1,2,2-Tetrachloroethane
ND
0.50
0.27
ND
3.4
1.9
10
10/26/22 8:46
CMR
Page 4 of 26

con -test®
A Pace Analytical Laboratory
Project Location: Charlotte, NC
Date Received: 10/19/2022
Field Sample #: MP-1
Sample ID: 22J2672-01
Sample Matrix: Sub Slab
Sampled: 10/ 17/2022 13:53
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Sample Description/Location:
Sub Description/Location:
Canister ID: 2888
Canister Size: 1 liter
Flow Controller ID: 4469
Sample Type: 10 min
Work Order: 22J2672
Initial Vacuum(in Hg): -28
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -7.1
Flow Controller Type: Fixed -Orifice
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
Sample Flags: RL-11
ppbv ug/m3 Date/Time
Analyte Results RL MDL Flag/Qual Results RL MDL Dilution Analyzed Analyst
Tetrachloroethylene
ND
0.50
0.38
ND
3.4
2.6
10
10/26/22 8:46
CMR
Tetrahydrofuran
760
20
3.3
2200
59
9.7
40
10/26/22 9:27
CMR
Toluene
1.0
0.50
0.29
3.8
1.9
1.1
10
10/26/22 8:46
CMR
1,2,4-Trichlorobenzene
ND
0.50
0.46
ND
3.7
3.4
10
10/26/22 8:46
CMR
1, 1, 1 -Trichloroethane
ND
0.50
0.39
ND
2.7
2.1
10
10/26/22 8:46
CMR
1,1,2-Trichloroethane
ND
0.50
0.35
ND
2.7
1.9
10
10/26/22 8:46
CMR
Trichloroethylene
ND
0.50
0.34
ND
2.7
1.8
10
10/26/22 8:46
CMR
Trichlorofluoromethane (Freon 11)
ND
2.0
0.59
ND
11
3.3
10
10/26/22 8:46
CMR
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
ND
2.0
0.56
ND
15
4.3
10
10/26/22 8:46
CMR
1,2,4-Trimethylbenzene
ND
0.50
0.22
ND
2.5
1.1
10
10/26/22 8:46
CMR
1,3,5-Trimethylbenzene
ND
0.50
0.26
ND
2.5
1.3
10
10/26/22 8:46
CMR
Vinyl Acetate
ND
10
2.7
L-03 ND
35
9.5
10
10/26/22 8:46
CMR
Vinyl Chloride
ND
0.50
0.45
ND
1.3
1.2
10
10/26/22 8:46
CMR
m&p-Xylene
ND
1.0
0.56
ND
4.3
2.4
10
10/26/22 8:46
CMR
o-Xylene
ND
0.50
0.26
ND
2.2
1.1
10
10/26/22 8:46
CMR
Surrogates
4-Bromofluorobenzene (1)
4-Bromofluorobenzene (1)
% Recovery
% REC Limits
98.7 70-130
101 70-130
10/26/22 9:27
10/26/22 8:46
Page 5 of 26

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Sample Description/Location:
Work Order: 22J2672
Date Received: 10/19/2022
Sub Description/Location:
Initial Vacuum(in Hg): -27
Field Sample #: MP-2
Canister ID: 2896
Final Vacuum(in Hg): -5
Sample ID: 22J2672-02
Canister Size: 1 liter
Receipt Vacuum(in Hg): -6.1
Sample Matrix: Sub Slab
Flow Controller ID: 4470
Flow Controller Type: Fixed -Orifice
Sampled: 10/17/2022 14:33
Sample Type: 10 min
Flow Controller Calibration
RPD Pre and Post -Sampling:
Analyte
Results
ppbv
RL
EPA TO-15
MDL
Flag/Qual
Results
ug/m3
RL
MDL
Dilution
Date/Time
Analyzed
Analyst
Acetone
800
80
48
1900
190
110
40
10/26/22 11:00
CMR
Benzene
ND
0.50
0.38
ND
1.6
1.2
10
10/26/22 10:08
CMR
Benzyl chloride
ND
0.50
0.44
ND
2.6
2.3
10
10/26/22 10:08
CMR
Bromodichloromethane
ND
0.50
0.35
ND
3.4
2.3
10
10/26/22 10:08
CMR
Bromoform
ND
0.50
0.34
ND
5.2
3.5
10
10/26/22 10:08
CMR
Bromomethane
ND
0.50
0.33
ND
1.9
1.3
10
10/26/22 10:08
CMR
1,3-Butadiene
ND
0.50
0.42
ND
1.1
0.93
10
10/26/22 10:08
CMR
2-Butanone (MEK)
14
20
5.3
J
42
59
16
10
10/26/22 10:08
CMR
Carbon Disulfide
0.67
5.0
0.46
J
2.1
16
1.4
10
10/26/22 10:08
CMR
Carbon Tetrachloride
ND
0.50
0.40
ND
3.1
2.5
10
10/26/22 10:08
CMR
Chlorobenzene
ND
0.50
0.33
ND
2.3
1.5
10
10/26/22 10:08
CMR
Chloroethane
ND
0.50
0.44
ND
1.3
1.2
10
10/26/22 10:08
CMR
Chloroform
ND
0.50
0.48
ND
2.4
2.3
10
10/26/22 10:08
CMR
Chloromethane
ND
1.0
0.40
ND
2.1
0.82
10
10/26/22 10:08
CMR
Cyclohexane
ND
0.50
0.30
ND
1.7
1.0
10
10/26/22 10:08
CMR
Dibromochloromethane
ND
0.50
0.33
ND
4.3
2.8
10
10/26/22 10:08
CMR
1,2-Dibromoethane (EDB)
ND
0.50
0.30
ND
3.8
2.3
10
10/26/22 10:08
CMR
1,2-Dichlorobenzene
ND
0.50
0.29
ND
3.0
1.7
10
10/26/22 10:08
CMR
1,3-Dichlorobenzene
ND
0.50
0.28
ND
3.0
1.7
10
10/26/22 10:08
CMR
1,4-Dichlorobenzene
ND
0.50
0.33
ND
3.0
2.0
10
10/26/22 10:08
CMR
Dichlorodifluoromethane (Freon 12)
0.49
0.50
0.49
J
2.4
2.5
2.4
10
10/26/22 10:08
CMR
1,1-Dichloroethane
ND
0.50
0.44
ND
2.0
1.8
10
10/26/22 10:08
CMR
1,2-Dichloroethane
ND
0.50
0.45
ND
2.0
1.8
10
10/26/22 10:08
CMR
1,1-Dichloroethylene
ND
0.50
0.38
ND
2.0
1.5
10
10/26/22 10:08
CMR
cis-1,2-Dichloroethylene
ND
0.50
0.36
ND
2.0
1.4
10
10/26/22 10:08
CMR
trans-1,2-Dichloroethylene
ND
0.50
0.39
ND
2.0
1.6
10
10/26/22 10:08
CMR
1,2-Dichloropropane
ND
0.50
0.27
ND
2.3
1.3
10
10/26/22 10:08
CMR
cis- 1,3 -Dichloropropene
ND
0.50
0.26
ND
2.3
1.2
10
10/26/22 10:08
CMR
trans- 1, 3 -Dichloropropene
ND
0.50
0.26
ND
2.3
1.2
10
10/26/22 10:08
CMR
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)
ND
0.50
0.49
ND
3.5
3.4
10
10/26/22 10:08
CMR
1,4-Dioxane
ND
5.0
0.42
ND
18
1.5
10
10/26/22 10:08
CMR
Ethanol
ND
20
8.8
L-03
ND
38
17
10
10/26/22 10:08
CMR
Ethyl Acetate
ND
5.0
2.5
ND
18
9.1
10
10/26/22 10:08
CMR
Ethylbenzene
ND
0.50
0.29
ND
2.2
1.3
10
10/26/22 10:08
CMR
4-Ethyltoluene
ND
0.50
0.31
ND
2.5
1.5
10
10/26/22 10:08
CMR
Heptane
ND
0.50
0.32
ND
2.0
1.3
10
10/26/22 10:08
CMR
Hexachlorobutadiene
ND
0.50
0.41
ND
5.3
4.4
10
10/26/22 10:08
CMR
Hexane
ND
20
2.6
ND
70
9.2
10
10/26/22 10:08
CMR
2-Hexanone (MBK)
ND
0.50
0.25
ND
2.0
1.0
10
10/26/22 10:08
CMR
Isopropanol
ND
20
3.4
L-03
ND
49
8.5
10
10/26/22 10:08
CMR
Methyl tert-Butyl Ether (MTBE)
ND
0.50
0.39
ND
1.8
1.4
10
10/26/22 10:08
CMR
Methylene Chloride
ND
5.0
2.3
ND
17
8.1
10
10/26/22 10:08
CMR
4-Methyl-2-pentanone (MIBK)
ND
0.50
0.27
ND
2.0
1.1
10
10/26/22 10:08
CMR
Naphthalene
ND
0.50
0.38
ND
2.6
2.0
10
10/26/22 10:08
CMR
Propene
ND
20
4.4
ND
34
7.6
10
10/26/22 10:08
CMR
Styrene
ND
0.50
0.26
ND
2.1
1.1
10
10/26/22 10:08
CMR
1,1,2,2-Tetrachloroethane
ND
0.50
0.27
ND
3.4
1.9
10
10/26/22 10:08
CMR
Page 6 of 26

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Sample Description/Location:
Work Order: 22J2672
Date Received: 10/19/2022
Sub Description/Location:
Initial Vacuum(in Hg): -27
Field Sample #: MP-2
Canister ID: 2896
Final Vacuum(in Hg): -5
Sample ID: 22J2672-02
Canister Size: 1 liter
Receipt Vacuum(in Hg): -6.1
Sample Matrix: Sub Slab
Flow Controller ID: 4470
Flow Controller Type: Fixed -Orifice
Sampled: 10/17/2022 14:33
Sample Type: 10 min
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
Sample Flags: RL-11
ppbv
ug/m3
Date/Time
Analyte
Results
RL
MDL
Flag/Qual Results
RL
MDL
Dilution
Analyzed
Analyst
Tetrachloroethylene
ND
0.50
0.38
ND
3.4
2.6
10
10/26/22 10:08
CMR
Tetrahydroforan
1300
20
3.3
3900
59
9.7
40
10/26/22 11:00
CMR
Toluene
0.34
0.50
0.29
J 1.3
1.9
1.1
10
10/26/22 10:08
CMR
1,2,4-Trichlorobenzene
ND
0.50
0.46
ND
3.7
3.4
10
10/26/22 10:08
CMR
1, 1, 1 -Trichloroethane
ND
0.50
0.39
ND
2.7
2.1
10
10/26/22 10:08
CMR
1,1,2-Trichloroethane
ND
0.50
0.35
ND
2.7
1.9
10
10/26/22 10:08
CMR
Trichloroethylene
ND
0.50
0.34
ND
2.7
1.8
10
10/26/22 10:08
CMR
Trichlorofluoromethane (Freon 11)
ND
2.0
0.59
ND
11
3.3
10
10/26/22 10:08
CMR
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
ND
2.0
0.56
ND
15
4.3
10
10/26/22 10:08
CMR
1,2,4-Trimethylbenzene
ND
0.50
0.22
ND
2.5
1.1
10
10/26/22 10:08
CMR
1,3,5-Trimethylbenzene
ND
0.50
0.26
ND
2.5
1.3
10
10/26/22 10:08
CMR
Vinyl Acetate
ND
10
2.7
L-03 ND
35
9.5
10
10/26/22 10:08
CMR
Vinyl Chloride
ND
0.50
0.45
ND
1.3
1.2
10
10/26/22 10:08
CMR
m&p-Xylene
ND
1.0
0.56
ND
4.3
2.4
10
10/26/22 10:08
CMR
o-Xylene
ND
0.50
0.26
ND
2.2
1.1
10
10/26/22 10:08
CMR
Surrogates
% Recovery
% REC Limits
4-Bromofluorobenzene(1)
102
70-130
10/26/22 11:00
4-Bromofluorobenzene (1)
105
70-130
10/26/22 10:08
Page 7 of 26

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Sample Description/Location:
Work Order: 22J2672
Date Received: 10/19/2022
Sub Description/Location:
Initial Vacuum(in Hg): -28.5
Field Sample #: MP-3
Canister ID: 2885
Final Vacuum(in Hg): -5
Sample ID: 22J2672-03
Canister Size: 1 liter
Receipt Vacuum(in Hg): -4.7
Sample Matrix: Sub Slab
Flow Controller ID: 4750
Flow Controller Type: Fixed -Orifice
Sampled: 10/17/2022 15:07
Sample Type: 10 min
Flow Controller Calibration
RPD Pre and Post -Sampling:
Sample Flags: RL-11
Analyte
Results
ppbv
RL
EPA TO-15
MDL
Flag/Qual
Results
ug/m3
RL
MDL
Dilution
Date/Time
Analyzed
Analyst
Acetone
1300
80
48
3200
190
110
40
10/26/22 11:41
CMR
Benzene
ND
2.0
1.5
ND
6.4
4.8
40
10/26/22 11:41
CMR
Benzyl chloride
ND
2.0
1.8
ND
10
9.1
40
10/26/22 11:41
CMR
Bromodichloromethane
ND
2.0
1.4
ND
13
9.4
40
10/26/22 11:41
CMR
Bromoform
ND
2.0
1.4
ND
21
14
40
10/26/22 11:41
CMR
Bromomethane
ND
2.0
1.3
ND
7.8
5.2
40
10/26/22 11:41
CMR
1,3-Butadiene
ND
2.0
1.7
ND
4.4
3.7
40
10/26/22 11:41
CMR
2-Butanone (MEK)
240
80
21
700
240
63
40
10/26/22 11:41
CMR
Carbon Disulfide
ND
20
1.8
ND
62
5.8
40
10/26/22 11:41
CMR
Carbon Tetrachloride
ND
2.0
1.6
ND
13
10
40
10/26/22 11:41
CMR
Chlorobenzene
ND
2.0
1.3
ND
9.2
6.1
40
10/26/22 11:41
CMR
Chloroethane
ND
2.0
1.8
ND
5.3
4.7
40
10/26/22 11:41
CMR
Chloroform
ND
2.0
1.9
ND
9.8
9.3
40
10/26/22 11:41
CMR
Chloromethane
ND
4.0
1.6
ND
8.3
3.3
40
10/26/22 11:41
CMR
Cyclohexane
ND
2.0
1.2
ND
6.9
4.2
40
10/26/22 11:41
CMR
Dibromochloromethane
ND
2.0
1.3
ND
17
11
40
10/26/22 11:41
CMR
1,2-Dibromoethane (EDB)
ND
2.0
1.2
ND
15
9.3
40
10/26/22 11:41
CMR
1,2-Dichlorobenzene
ND
2.0
1.1
ND
12
6.9
40
10/26/22 11:41
CMR
1,3-Dichlorobenzene
ND
2.0
1.1
ND
12
6.7
40
10/26/22 11:41
CMR
1,4-Dichlorobenzene
ND
2.0
1.3
ND
12
7.9
40
10/26/22 11:41
CMR
Dichlorodifluoromethane (Freon 12)
ND
2.0
2.0
ND
9.9
9.7
40
10/26/22 11:41
CMR
1,1-Dichloroethane
ND
2.0
1.7
ND
8.1
7.1
40
10/26/22 11:41
CMR
1,2-Dichloroethane
ND
2.0
1.8
ND
8.1
7.3
40
10/26/22 11:41
CMR
1,1-Dichloroethylene
ND
2.0
1.5
ND
7.9
6.0
40
10/26/22 11:41
CMR
cis-1,2-Dichloroethylene
ND
2.0
1.5
ND
7.9
5.8
40
10/26/22 11:41
CMR
trans-1,2-Dichloroethylene
ND
2.0
1.6
ND
7.9
6.2
40
10/26/22 11:41
CMR
1,2-Dichloropropane
ND
2.0
1.1
ND
9.2
5.0
40
10/26/22 11:41
CMR
cis- 1,3 -Dichloropropene
ND
2.0
1.0
ND
9.1
4.7
40
10/26/22 11:41
CMR
trans- 1, 3 -Dichloropropene
ND
2.0
1.0
ND
9.1
4.6
40
10/26/22 11:41
CMR
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)
ND
2.0
2.0
ND
14
14
40
10/26/22 11:41
CMR
1,4-Dioxane
ND
20
1.7
ND
72
6.0
40
10/26/22 11:41
CMR
Ethanol
ND
80
35
L-03
ND
150
66
40
10/26/22 11:41
CMR
Ethyl Acetate
ND
20
10
ND
72
36
40
10/26/22 11:41
CMR
Ethylbenzene
ND
2.0
1.2
ND
8.7
5.1
40
10/26/22 11:41
CMR
4-Ethyltoluene
ND
2.0
1.2
ND
9.8
6.0
40
10/26/22 11:41
CMR
Heptane
ND
2.0
1.3
ND
8.2
5.2
40
10/26/22 11:41
CMR
Hexachlorobutadiene
ND
2.0
1.6
ND
21
18
40
10/26/22 11:41
CMR
Hexane
ND
80
10
ND
280
37
40
10/26/22 11:41
CMR
2-Hexanone (MBK)
ND
2.0
1.0
ND
8.2
4.1
40
10/26/22 11:41
CMR
Isopropanol
15
80
14
L-03,J
36
200
34
40
10/26/22 11:41
CMR
Methyl tert-Butyl Ether (MTBE)
ND
2.0
1.5
ND
7.2
5.6
40
10/26/22 11:41
CMR
Methylene Chloride
ND
20
9.3
ND
69
32
40
10/26/22 11:41
CMR
4-Methyl-2-pentanone (MIBK)
ND
2.0
1.1
ND
8.2
4.4
40
10/26/22 11:41
CMR
Naphthalene
ND
2.0
1.5
ND
10
7.9
40
10/26/22 11:41
CMR
Propene
ND
80
18
ND
140
30
40
10/26/22 11:41
CMR
Styrene
ND
2.0
1.1
ND
8.5
4.5
40
10/26/22 11:41
CMR
1,1,2,2-Tetrachloroethane
ND
2.0
1.1
ND
14
7.4
40
10/26/22 11:41
CMR
Page 8 of 26

con -test®
A Pace Analytical Laboratory
Project Location: Charlotte, NC
Date Received: 10/19/2022
Field Sample #: MP-3
Sample ID: 22J2672-03
Sample Matrix: Sub Slab
Sampled: 10/ 17/2022 15:07
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Sample Description/Location:
Sub Description/Location:
Canister ID: 2885
Canister Size: 1 liter
Flow Controller ID: 4750
Sample Type: 10 min
Work Order: 22J2672
Initial Vacuum(in Hg): -28.5
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -4.7
Flow Controller Type: Fixed -Orifice
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
Sample Flags: RL-11
ppbv ug/m3 Date/Time
Analyte Results RL MDL Flag/Qual Results RL MDL Dilution Analyzed Analyst
Tetrachloroethylene
ND
2.0
1.5
ND
14
10
40
10/26/22 11:41
CMR
Tetrahydrofuran
2700
150
25
7900
440
73
300
10/26/22 12:24
CMR
Toluene
ND
2.0
1.1
ND
7.5
4.3
40
10/26/22 11:41
CMR
1,2,4-Trichlorobenzene
ND
2.0
1.9
ND
15
14
40
10/26/22 11:41
CMR
1, 1, 1 -Trichloroethane
ND
2.0
1.6
ND
11
8.6
40
10/26/22 11:41
CMR
1,1,2-Trichloroethane
ND
2.0
1.4
ND
11
7.7
40
10/26/22 11:41
CMR
Trichloroethylene
ND
2.0
1.3
ND
11
7.2
40
10/26/22 11:41
CMR
Trichlorofluoromethane (Freon 11)
ND
8.0
2.4
ND
45
13
40
10/26/22 11:41
CMR
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
ND
8.0
2.2
ND
61
17
40
10/26/22 11:41
CMR
1,2,4-Trimethylbenzene
1.9
2.0
0.88
J 9.2
9.8
4.3
40
10/26/22 11:41
CMR
1,3,5-Trimethylbenzene
ND
2.0
1.1
ND
9.8
5.2
40
10/26/22 11:41
CMR
Vinyl Acetate
ND
40
11
L-03 ND
140
38
40
10/26/22 11:41
CMR
Vinyl Chloride
ND
2.0
1.8
ND
5.1
4.6
40
10/26/22 11:41
CMR
m&p-Xylene
ND
4.0
2.2
ND
17
9.7
40
10/26/22 11:41
CMR
o-Xylene
ND
2.0
1.0
ND
8.7
4.4
40
10/26/22 11:41
CMR
Surrogates
4-Bromofluorobenzene (1)
4-Bromofluorobenzene (1)
% Recovery
% REC Limits
105 70-130
108 70-130
10/26/22 12:24
10/26/22 11:41
Page 9 of 26

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Sample Description/Location:
Work Order: 22J2672
Date Received: 10/19/2022
Sub Description/Location:
Initial Vacuum(in Hg): -28.5
Field Sample #: MP-DUP
Canister ID: 2787
Final Vacuum(in Hg): -5
Sample ID: 22J2672-04
Canister Size: 1 liter
Receipt Vacuum(in Hg): -4.5
Sample Matrix: Sub Slab
Flow Controller ID: 4750
Flow Controller Type: Fixed -Orifice
Sampled: 10/17/2022 00:00
Sample Type: 10 min
Flow Controller Calibration
RPD Pre and Post -Sampling:
Sample Flags: RL-11
Analyte
Results
ppbv
RL
EPA TO-15
MDL
Flag/Qual Results
ug/m3
RL
MDL
Dilution
Date/Time
Analyzed
Analyst
Acetone
1300
80
48
3000
190
110
40
10/26/22 13:04
CMR
Benzene
ND
2.0
1.5
ND
6.4
4.8
40
10/26/22 13:04
CMR
Benzyl chloride
ND
2.0
1.8
ND
10
9.1
40
10/26/22 13:04
CMR
Bromodichloromethane
ND
2.0
1.4
ND
13
9.4
40
10/26/22 13:04
CMR
Bromoform
ND
2.0
1.4
ND
21
14
40
10/26/22 13:04
CMR
Bromomethane
ND
2.0
1.3
ND
7.8
5.2
40
10/26/22 13:04
CMR
1,3-Butadiene
ND
2.0
1.7
ND
4.4
3.7
40
10/26/22 13:04
CMR
2-Butanone (MEK)
250
80
21
740
240
63
40
10/26/22 13:04
CMR
Carbon Disulfide
ND
20
1.8
ND
62
5.8
40
10/26/22 13:04
CMR
Carbon Tetrachloride
ND
2.0
1.6
ND
13
10
40
10/26/22 13:04
CMR
Chlorobenzene
ND
2.0
1.3
ND
9.2
6.1
40
10/26/22 13:04
CMR
Chloroethane
ND
2.0
1.8
ND
5.3
4.7
40
10/26/22 13:04
CMR
Chloroform
ND
2.0
1.9
ND
9.8
9.3
40
10/26/22 13:04
CMR
Chloromethane
ND
4.0
1.6
ND
8.3
3.3
40
10/26/22 13:04
CMR
Cyclohexane
ND
2.0
1.2
ND
6.9
4.2
40
10/26/22 13:04
CMR
Dibromochloromethane
ND
2.0
1.3
ND
17
11
40
10/26/22 13:04
CMR
1,2-Dibromoethane (EDB)
ND
2.0
1.2
ND
15
9.3
40
10/26/22 13:04
CMR
1,2-Dichlorobenzene
ND
2.0
1.1
ND
12
6.9
40
10/26/22 13:04
CMR
1,3-Dichlorobenzene
ND
2.0
1.1
ND
12
6.7
40
10/26/22 13:04
CMR
1,4-Dichlorobenzene
ND
2.0
1.3
ND
12
7.9
40
10/26/22 13:04
CMR
Dichlorodifluoromethane (Freon 12)
ND
2.0
2.0
ND
9.9
9.7
40
10/26/22 13:04
CMR
1,1-Dichloroethane
ND
2.0
1.7
ND
8.1
7.1
40
10/26/22 13:04
CMR
1,2-Dichloroethane
ND
2.0
1.8
ND
8.1
7.3
40
10/26/22 13:04
CMR
1,1-Dichloroethylene
ND
2.0
1.5
ND
7.9
6.0
40
10/26/22 13:04
CMR
cis-1,2-Dichloroethylene
ND
2.0
1.5
ND
7.9
5.8
40
10/26/22 13:04
CMR
trans-1,2-Dichloroethylene
ND
2.0
1.6
ND
7.9
6.2
40
10/26/22 13:04
CMR
1,2-Dichloropropane
ND
2.0
1.1
ND
9.2
5.0
40
10/26/22 13:04
CMR
cis- 1,3 -Dichloropropene
ND
2.0
1.0
ND
9.1
4.7
40
10/26/22 13:04
CMR
trans- 1, 3 -Dichloropropene
ND
2.0
1.0
ND
9.1
4.6
40
10/26/22 13:04
CMR
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)
ND
2.0
2.0
ND
14
14
40
10/26/22 13:04
CMR
1,4-Dioxane
ND
20
1.7
ND
72
6.0
40
10/26/22 13:04
CMR
Ethanol
ND
80
35
L-03 ND
150
66
40
10/26/22 13:04
CMR
Ethyl Acetate
ND
20
10
ND
72
36
40
10/26/22 13:04
CMR
Ethylbenzene
ND
2.0
1.2
ND
8.7
5.1
40
10/26/22 13:04
CMR
4-Ethyltoluene
ND
2.0
1.2
ND
9.8
6.0
40
10/26/22 13:04
CMR
Heptane
ND
2.0
1.3
ND
8.2
5.2
40
10/26/22 13:04
CMR
Hexachlorobutadiene
ND
2.0
1.6
ND
21
18
40
10/26/22 13:04
CMR
Hexane
ND
80
10
ND
280
37
40
10/26/22 13:04
CMR
2-Hexanone (MBK)
ND
2.0
1.0
ND
8.2
4.1
40
10/26/22 13:04
CMR
Isopropanol
ND
80
14
L-03 ND
200
34
40
10/26/22 13:04
CMR
Methyl tert-Butyl Ether (MTBE)
ND
2.0
1.5
ND
7.2
5.6
40
10/26/22 13:04
CMR
Methylene Chloride
ND
20
9.3
ND
69
32
40
10/26/22 13:04
CMR
4-Methyl-2-pentanone (MIBK)
ND
2.0
1.1
ND
8.2
4.4
40
10/26/22 13:04
CMR
Naphthalene
ND
2.0
1.5
ND
10
7.9
40
10/26/22 13:04
CMR
Propene
ND
80
18
ND
140
30
40
10/26/22 13:04
CMR
Styrene
ND
2.0
1.1
ND
8.5
4.5
40
10/26/22 13:04
CMR
1,1,2,2-Tetrachloroethane
ND
2.0
1.1
ND
14
7.4
40
10/26/22 13:04
CMR
Page 10 of 26

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Sample Description/Location:
Work Order: 22J2672
Date Received: 10/19/2022
Sub Description/Location:
Initial Vacuum(in Hg): -28.5
Field Sample #: MP-DUP
Canister ID: 2787
Final Vacuum(in Hg): -5
Sample ID: 22J2672-04
Canister Size: 1 liter
Receipt Vacuum(in Hg): -4.5
Sample Matrix: Sub Slab
Flow Controller ID: 4750
Flow Controller Type: Fixed -Orifice
Sampled: 10/17/2022 00:00
Sample Type: 10 min
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
Sample Flags: RL-11
ppbv
ug/m3
Date/Time
Analyte
Results
RL
MDL
Flag/Qual Results
RL
MDL
Dilution
Analyzed
Analyst
Tetrachloroethylene
ND
2.0
1.5
ND
14
10
40
10/26/22 13:04
CMR
Tetrahydroforan
2800
150
25
8300
440
73
300
10/26/22 13:47
CMR
Toluene
1.2
2.0
1.1
J 4.5
7.5
4.3
40
10/26/22 13:04
CMR
1,2,4-Trichlorobenzene
ND
2.0
1.9
ND
15
14
40
10/26/22 13:04
CMR
1, 1, 1 -Trichloroethane
ND
2.0
1.6
ND
11
8.6
40
10/26/22 13:04
CMR
1,1,2-Trichloroethane
ND
2.0
1.4
ND
11
7.7
40
10/26/22 13:04
CMR
Trichloroethylene
ND
2.0
1.3
ND
11
7.2
40
10/26/22 13:04
CMR
Trichlorofluoromethane (Freon 11)
ND
8.0
2.4
ND
45
13
40
10/26/22 13:04
CMR
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
ND
8.0
2.2
ND
61
17
40
10/26/22 13:04
CMR
1,2,4-Trimethylbenzene
2.0
2.0
0.88
J 9.6
9.8
4.3
40
10/26/22 13:04
CMR
1,3,5-Trimethylbenzene
ND
2.0
1.1
ND
9.8
5.2
40
10/26/22 13:04
CMR
Vinyl Acetate
ND
40
11
L-03 ND
140
38
40
10/26/22 13:04
CMR
Vinyl Chloride
ND
2.0
1.8
ND
5.1
4.6
40
10/26/22 13:04
CMR
m&p-Xylene
ND
4.0
2.2
ND
17
9.7
40
10/26/22 13:04
CMR
o-Xylene
ND
2.0
1.0
ND
8.7
4.4
40
10/26/22 13:04
CMR
Surrogates
% Recovery
% REC Limits
4-Bromofluorobenzene (1)
106
70-130
10/26/22 13:47
4-Bromofluorobenzene (1)
104
70-130
10/26/22 13:04
Page 11 of 26

con -test®
A Pace Analytical Laboratory
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 ID1
Batch
Pressure
Dilution
Pre
Dilution
Pre-Dil
Initial
mL
Pre-Dil
Final
mL
Default
Injection
mL
Actual
Injection
mL
Date
22J2672-01 [MP-1]
B321163
1.5
1
N/A
1000
400
60
10/25/22
22J2672-01RE1 [MP-1]
B321163
1.5
1
N/A
1000
400
15
10/25/22
22J2672-02 [MP-2]
B321163
1.5
1
N/A
1000
400
60
10/25/22
22J2672-02RE1[MP-2]
B321163
1.5
1
N/A
1000
400
15
10/25/22
22J2672-03 [MP-3]
B321163
1.5
1
N/A
1000
400
15
10/25/22
22J2672-03RE1 [MP-3]
B321163
1.5
200
5
1000
400
400
10/25/22
22J2672-04 [MP-DUP]
B321163
1.5
1
N/A
1000
400
15
10/25/22
22J2672-04RE1 [MP-DUP]
B321163
1.5
200
5
1000
400
400
10/25/22
Page 12 of 26

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
QUALITY CONTROL
Air Toxics by EPA Compendium Methods - Quality Control
ppbv ug/m3 Spike Level Source %REC RPD
nalyte Results RL Results RL ppbv Result %REC Limits RPD Limit Flag/Qua
Batch B321163 - TO-15 Prep
Blank (B321163-BLK1)
Prepared & Analyzed: 10/25/22
Acetone
ND
0.80
Benzene
ND
0.020
Benzyl chloride
ND
0.020
Bromodichloromethane
ND
0.020
Bromoform
ND
0.020
Bromomethane
ND
0.020
1,3-Butadiene
ND
0.020
2-Butanone (MEK)
ND
0.80
Carbon Disulfide
ND
0.20
Carbon Tetrachloride
ND
0.020
Chlorobenzene
ND
0.020
Chloroethane
ND
0.020
Chloroform
ND
0.020
Chloromethane
ND
0.040
Cyclohexane
ND
0.020
Dibromochloromethane
ND
0.020
1,2-Dibromoethane (EDB)
ND
0.020
1,2-Dichlorobenzene
ND
0.020
1,3-Dichlorobenzene
ND
0.020
114-Dichlorobenzene
ND
0.020
Dichlorodifluoromethane (Freon 12)
ND
0.020
1,1-Dichloroethane
ND
0.020
1,2-Dichloroethane
ND
0.020
1,1-Dichloroethylene
ND
0.020
cis-1,2-Dichloroethylene
ND
0.020
trans-1,2-Dichloroethylene
ND
0.020
1,2-Dichloropropane
ND
0.020
cis- 1,3 -Dichloropropene
ND
0.020
trans- l,3-Dichloropropene
ND
0.020
1,2-Dichloro- 1, 1,2,2-tetrafluoroethane
ND
0.020
(Freon 114)
1,4-Dioxane
ND
0.20
Ethanol
ND
0.80
L-03
Ethyl Acetate
ND
0.20
Ethylbenzene
ND
0.020
4-Ethyltoluene
ND
0.020
Heptane
ND
0.020
Hexachlorobutadiene
ND
0.020
Hexane
ND
0.80
2-Hexanone (MBK)
ND
0.020
Isopropanol
ND
0.80
L-03
Methyl tert-Butyl Ether (MTBE)
ND
0.020
Methylene Chloride
ND
0.20
4-Methyl-2-pentanone (MIBK)
ND
0.020
Naphthalene
ND
0.020
Propene
ND
0.80
Styrene
ND
0.020
Page 13 of 26

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
QUALITY CONTROL
Air Toxics by EPA Compendium Methods - Quality Control
ppbv ug/m3 Spike Level Source %REC RPD
\nalyte Results RL Results RL ppbv Result %REC Limits RPD Limit Flag/Qua]
Batch B321163 - TO-15 Prep
Blank (B321163-BLK1)
Prepared & Analyzed: 10/25/22
1,1,2,2-Tetrachloroethane
ND
0.020
Tetrachloroethylene
ND
0.020
Tetrahydrofuran
ND
0.20
Toluene
ND
0.020
1,2,4-Trichlorobenzene
ND
0.020
1, 1, 1 -Trichloroethane
ND
0.020
1,1,2-Trichloroethane
ND
0.020
Trichloroethylene
ND
0.020
Trichlorofluoromethane (Freon 11)
ND
0.080
1, 1,2-Trichloro- 1,2,2-trifluoroethane (Freon
ND
0.080
113)
1,2,4-Trimethylbenzene
ND
0.020
1,3,5-Trimethylbenzene
ND
0.020
Vinyl Acetate
ND
0.40 L-02
Vinyl Chloride
ND
0.020
m&p-Xylene
ND
0.040
o-Xylene
ND
0.020
Surrogate: 4-BromoJluorobenzene (1)
LCS (B321163-BS1)
8.29
8.00 104
Prepared & Analyzed: 10/25/22
70-130
Acetone
4.14
5.00
82.9
70-130
Benzene
4.99
5.00
99.8
70-130
Benzyl chloride
5.30
5.00
106
70-130
Bromodichloromethane
4.82
5.00
96.4
70-130
Bromoform
4.56
5.00
91.2
70-130
Bromomethane
3.69
5.00
73.9
70-130
1,3-Butadiene
3.91
5.00
78.2
70-130
2-Butanone (MEK)
4.48
5.00
89.7
70-130
Carbon Disulfide
4.36
5.00
87.2
70-130
Carbon Tetrachloride
4.59
5.00
91.8
70-130
Chlorobenzene
4.36
5.00
87.1
70-130
Chloroethane
3.88
5.00
77.6
70-130
Chloroform
4.08
5.00
81.6
70-130
Chloromethane
4.02
5.00
80.4
70-130
Cyclohexane
4.83
5.00
96.6
70-130
Dibromochloromethane
4.66
5.00
93.3
70-130
1,2-Dibromoethane (EDB)
4.53
5.00
90.6
70-130
1,2-Dichlorobenzene
4.63
5.00
92.7
70-130
1,3-Dichlorobenzene
4.67
5.00
93.4
70-130
1,4-Dichlorobenzene
4.77
5.00
95.4
70-130
Dichlorodifluoromethane (Freon 12)
4.10
5.00
82.0
70-130
1,1-Dichloroethane
4.47
5.00
89.4
70-130
1,2-Dichloroethane
4.28
5.00
85.6
70-130
1, 1 -Dichloroethylene
4.52
5.00
90.4
70-130
cis-1,2-Dichloroethylene
4.45
5.00
88.9
70-130
trans-1,2-Dichloroethylene
4.47
5.00
89.4
70-130
1,2-Dichloropropane
5.38
5.00
108
70-130
Page 14 of 26

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
QUALITY CONTROL
Air Toxics by EPA Compendium Methods - Quality Control
ppbv ug/m3 Spike Level Source %REC RPD
\nalyte Results RL Results RL ppbv Result %REC Limits RPD Limit Flag/Qua]
Batch B321163 - TO-15 Prep
LCS (B321163-BSI)
Prepared & Analyzed: 10/25/22
cis-1,3-Dichloropropene
4.99
5.00
99.9
70-130
trans-1,3-Dichloropropene
5.05
5.00
101
70-130
1,2-Dichloro- 1, 1,2,2-tetrafluoroethane
3.51
5.00
70.2
70-130
(Freon 114)
1,4-Dioxane
4.62
5.00
92.4
70-130
Ethanol
3.20
5.00
64.1 *
70-130 L-03
Ethyl Acetate
4.37
5.00
87.5
70-130
Ethylbenzene
4.70
5.00
93.9
70-130
4-Ethyltoluene
4.88
5.00
97.6
70-130
Heptane
5.46
5.00
109
70-130
Hexachlorobutadiene
3.90
5.00
78.0
70-130
Hexane
4.82
5.00
96.4
70-130
2-Hexanone (MBK)
5.66
5.00
113
70-130
Isopropanol
3.33
5.00
66.6 *
70-130 L-03
Methyl tert-Butyl Ether (MTBE)
3.98
5.00
79.6
70-130
Methylene Chloride
4.08
5.00
81.5
70-130
4-Methyl-2-pentanone (MIBK)
5.43
5.00
109
70-130
Naphthalene
6.23
5.00
125
70-130
Propene
4.37
5.00
87.4
70-130
Styrene
4.78
5.00
95.7
70-130
1,1,2,2-Tetrachloroethane
4.62
5.00
92.3
70-130
Tetrachloroethylene
4.20
5.00
83.9
70-130
Tetrahydrofuran
4.30
5.00
86.1
70-130
Toluene
4.67
5.00
93.4
70-130
1,2,4-Trichlorobenzene
4.35
5.00
87.0
70-130
1, 1, 1 -Trichloroethane
4.36
5.00
87.3
70-130
1,1,2-Trichloroethane
4.62
5.00
92.4
70-130
Trichloroethylene
4.96
5.00
99.2
70-130
Trichlorofluoromethane (Freon 11)
3.80
5.00
75.9
70-130
1, 1,2-Trichloro- 1,2,2-trifluoroethane (Freon
3.76
5.00
75.2
70-130
113)
1,2,4-Trimethylbenzene
4.81
5.00
96.2
70-130
1,3,5-Trimethylbenzene
4.74
5.00
94.9
70-130
Vinyl Acetate
3.28
5.00
65.6 *
70-130 L-03
Vinyl Chloride
4.05
5.00
81.0
70-130
m&p-Xylene
9.63
10.0
96.3
70-130
o-Xylene
4.85
5.00
96.9
70-130
Surrogate: 4-Bromofluorobenzene (1) 8.21 8.00 103 70-130
Page 15 of 26

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
Note: Blank Subtraction is not performed unless otherwise noted
FLAG/QUALIFIER SUMMARY
*
QC result is outside of established limits.
t
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
LCS 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
% REC Percent Recovery
ND Not Detected
N/A Not Applicable
DL Detection Limit
NC Not Calculated
LFB/LCS Lab Fortified Blank/Lab Control Sample
ORP Oxidation -Reduction Potential
wet Not dry weight corrected
% wt Percent weight
Kg Kilogram
g Gram
mg Milligram
µg Microgram
ng Nanogram
L Liter
mL Milliliter
µL Microliter
m3 Cubic Meter
EPH Extractable Petroleum Hydrocarbons
VPH Volatile Petroleum Hydrocarbons
APH Air Petroleum Hydrocarbons
FID Flame Ionization Detector
PID Photo Ionization Detector
Percent recoveries and relative percent differences (RPDs) are determined by the software using values in the
calculation which have not been rounded.
J Detected but below the Reporting Limit (lowest calibration standard); therefore, result is an estimated
concentration (CLP J-Flag).
L-03 Laboratory fortified blank/laboratory control sample recovery is outside of control limits. Reported value for this
compound is likely to be biased on the low side.
RL-11 Elevated reporting limit due to high concentration of target compounds.
Page 16 of 26

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
TPH
Thomas P. Hnitecki
STATION PDF Management Station
LR
Lionel Rios
KKM
Kerry K. McGee
CMR
Catherine M. Rouleau
BRF
Brittany R. Fisk
ANALYST
Page 17 of 26

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
INTERNAL STANDARD AREAAND RT SUMMARY
EPA TO-15
Internal Standard
Response
RT
Reference
Response
Reference
RT
Area %
Area %
Limits
RT Diff
RT Diff
Limit
Q
Calibration Check (S078435-CCV1) Lab File ID: G22A298004.13 Analyzed: 10/25/22 15:02
Bromochloromethane (1)
1163107
8.307
1163107
8.307
100
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene (1)
2557061
10.081
2557061
10.081
100
60 - 140
0.0000
+/-0.50
Chlorobenzene-d5(1)
2360326
14.446
2360326
14.446
100
60-140
0.0000
+/-0.50
LCS (B321163-BS1 ) Lab File ID: G22A298006.13 Analyzed: 10/25/22 16:22
Bromochloromethane (1)
1034393
8.307
1163107
8.307
89
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene (1)
2100638
10.081
2557061
10.081
82
60 - 140
0.0000
+/-0.50
Chlorobenzene-d5(1)
1927690
14.446
2360326
14.446
82
60-140
0.0000
+/-0.50
Blank (B321163-BLK1) Lab File ID: G22A298012.13 Analyzed: 10/25/22 20:39
Bromochloromethane (1)
1167731
8.307
1163107
8.307
100
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene (1)
2578627
10.081
2557061
10.081
101
60 - 140
0.0000
+/-0.50
Chlorobenzene-d5(1)
2375576
14.446
2360326
14.446
101
60-140
0.0000
+/-0.50
MP-1 (22J2672-01) Lab File ID: G22A298028.13 Analyzed: 10/26/22 08:46
Bromochloromethane (1)
1049723
8.307
1163107
8.307
90
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene (1)
2089203
10.081
2557061
10.081
82
60 - 140
0.0000
+/-0.50
Chlorobenzene-d5(1)
1943629
14.446
2360326
14.446
82
60-140
0.0000
+/-0.50
MP-1 (22J2672-01RE1) Lab File ID: G22A298029.13 Analyzed: 10/26/22 09:27
Bromochloromethane (1)
980913
8.307
1163107
8.307
84
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene (1)
1893835
10.081
2557061
10.081
74
60 - 140
0.0000
+/-0.50
Chlorobenzene-d5(1)
1764121
14.446
2360326
14.446
75
60-140
0.0000
+/-0.50
MP-2 (22J2672-02 ) Lab File ID: G22A298030.1) Analyzed: 10/26/22 10:08
Bromochloromethane (1)
1192165
8.307
1163107
8.307
102
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene (1)
2548716
10.081
2557061
10.081
100
60 - 140
0.0000
+/-0.50
Chlorobenzene-d5(1)
2370049
14.446
2360326
14.446
100
60-140
0.0000
+/-0.50
MP-2 (22J2672-02RE1) Lab File ID: G22A298031.1) Analyzed: 10/26/22 11:00
Bromochloromethane (1)
1126403
8.307
1163107
8.307
97
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
2388550
10.075
2557061
10.081
93
60-140
-0.0060
+/-0.50
Chlorobenzene-d5(1)
2229418
14.446
2360326
14.446
94
60-140
0.0000
+/-0.50
MP-3 (22J2672-03 ) Lab File ID: G22A298032.D Analyzed: 10/26/22 11:41
Bromochloromethane (1)
1080590
8.307
1163107
8.307
93
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene (1)
2232183
10.081
2557061
10.081
87
60 - 140
0.0000
+/-0.50
Chlorobenzene-d5(1)
2071265
14.446
2360326
14.446
88
60-140
0.0000
+/-0.50
MP-3 (22J2672-03RE1) Lab File ID: G22A298033.13 Analyzed: 10/26/22 12:24
Bromochloromethane (1)
1246753
8.313
1163107
8.307
107
60 - 140
0.0060
+/-0.50
1,4-Difluorobenzene (1)
2863990
10.081
2557061
10.081
112
60 - 140
0.0000
+/-0.50
Chlorobenzene-d5(1)
2664409
14.446
2360326
14.446
113
60-140
0.0000
+/-0.50
Page 18 of 26

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
INTERNAL STANDARD AREAAND RT SUMMARY
EPA TO-15
Internal Standard
Response
RT
Reference
Response
Reference
RT
Area %
Area %
Limits
RT Diff
RT Diff
Limit
Q
MP-DUP (22J2672-04) Lab File ID: G22A298034.D Analyzed: 10/26/22 13:04
Bromochloromethane (1)
1172668
8.307
1163107
8.307
101
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene (1)
2527489
10.081
2557061
10.081
99
60 - 140
0.0000
+/-0.50
Chlorobenzene-d5(1)
2321152
14.446
2360326
14.446
98
60-140
0.0000
+/-0.50
MP-DUP (22J2672-04RE1) Lab File ID: G22A298035.D Analyzed: 10/26/22 13:47
Bromochloromethane (1)
1256432
8.313
1163107
8.307
108
60 - 140
0.0060
+/-0.50
1,4-Difluorobenzene (1)
2897744
10.081
2557061
10.081
113
60 - 140
0.0000
+/-0.50
Chlorobenzene-d5(1)
2692690
14.446
2360326
14.446
114
60-140
0.0000
+/-0.50
Page 19 of 26

con -test®
A Pace Analytical Laboratory
39 Spruce Street' East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
CONTINUING CALIBRATION CHECK
EPA TO-15
S078435-CCV 1
COMPOUND
TYPE
CONC. (ppbv)
RESPONSE FACTOR
% DIFF / DRIFT
STD
CCV
ICAL
CCV
MIN (#)
CCV
LIMIT (#)
Acetone
A
5.00
4.13
1.084004
0.8961088
-17.3
30
Benzene
A
5.00
4.96
0.9129288
0.9062805
-0.7
30
Benzyl chloride
A
5.00
5.14
1.030942
1.059151
2.7
30
Bromodichloromethane
A
5.00
4.82
0.6953811
0.670195
-3.6
30
Bromoform
A
5.00
4.82
0.5656468
0.5453579
-3.6
30
Bromomethane
A
5.00
4.03
0.6009459
0.4839727
-19.5
30
1,3-Butadiene
A
5.00
4.29
0.5443004
0.4668544
-14.2
30
2-Butanone (MEK)
A
5.00
4.49
1.507683
1.353764
-10.2
30
Carbon Disulfide
A
5.00
4.48
2.02748
1.816027
-10.4
30
Carbon Tetrachloride
A
5.00
4.84
0.5479998
0.5300823
-3.3
30
Chlorobenzene
A
5.00
4.54
0.8809329
0.7997078
-9.2
30
Chloroethane
A
5.00
4.08
0.3452967
0.2819648
-18.3
30
Chloroform
A
5.00
4.46
1.561184
1.392109
-10.8
30
Chloromethane
A
5.00
4.26
0.6821899
0.5806269
-14.9
30
Cyclohexane
A
5.00
4.83
0.3600845
0.3479501
-3.4
30
Dibromochloromethane
A
5.00
4.85
0.6396581
0.6200377
-3.1
30
1,2-Dibromoethane(EDB)
A
5.00
4.64
0.6171207
0.5720586
-7.3
30
1,2-Dichlorobenzene
A
5.00
4.89
0.6937094
0.6781639
-2.2
30
1,3-Dichlorobenzene
A
5.00
4.94
0.7409581
0.7320026
-1.2
30
1,4-Dichlorobenzene
A
5.00
4.95
0.7218155
0.715146
-0.9
30
Dichlorodifluoromethane (Freon 12)
A
5.00
4.56
1.62808
1.485178
-8.8
30
1,1-Dichloroethane
A
5.00
4.63
1.342742
1.24341
-7.4
30
1,2-Dichloroethane
A
5.00
4.50
0.9627523
0.865596
-10.1
30
1,1-Dichloroethylene
A
5.00
4.70
1.140142
1.070783
-6.1
30
cis-1,2-Dichloroethyl-e
A
5.00
4.65
0.9670963
0.8991104
-7.0
30
trans-1,2-Dichloroethylene
A
5.00
4.65
1.001825
0.9324735
-6.9
30
1,2-Dichloropropane
A
5.00
5.18
0.3567989
0.3697207
3.6
30
cis- 1,3 -Dichloropropene
A
5.00
5.08
0.5092852
0.517949
1.7
30
trans- l,3-Dichloropropene
A
5.00
4.94
0.4570981
0.4516354
-1.2
30
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 1
A
5.00
4.13
1.73998
1.436772
-17.4
30
1,4-Dioxane
A
5.00
4.47
0.1857641
0.1659242
-10.7
30
Ethanol
A
5.00
4.02
0.2343264
0.1885735
-19.5
30
Ethyl Acetate
A
5.00
4.62
0.2308163
0.2131147
-7.7
30
Ethylbenzene
A
5.00
4.83
1.455024
1.404591
-3.5
30
4-Ethyltoluene
A
5.00
5.04
1.413771
1.426055
0.9
30
Heptane
A
5.00
5.32
0.2850308
0.3035153
6.5
30
Hexachlorobutadiene
A
5.00
4.84
0.4677459
0.4529429
-3.2
30
Hexane
A
5.00
4.87
0.8985394
0.8219791
-2.6
30
Page 20 of 26

con -test®
A Pace Analytical Laboratory
39 Spruce Street' East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
CONTINUING CALIBRATION CHECK
EPA TO-15
5078435-CCV 1
COMPOUND
TYPE
CONC. (ppbv)
RESPONSE FACTOR
% DIFF / DRIFT
STD
CCV
ICAL
CCV
MIN (#)
CCV
LIMIT (#)
2-Hexanone (MBK)
A
5.00
4.93
0.7712864
0.7598693
-1.5
30
Isopropanol
A
5.00
4.09
1.338902
1.095967
-18.1
30
Methyl tert-Butyl Ether (MTBE)
A
5.00
4.34
1.834723
1.593167
-13.2
30
Methylene Chloride
A
5.00
4.19
0.9597215
0.8050451
-16.1
30
4-Methyl-2-pentanone (MI13K)
A
5.00
5.10
0.7726854
0.7883889
2.0
30
Naphthalene
A
5.00
4.96
1.092246
1.083617
-0.8
30
Propene
A
5.00
4.75
0.5941328
0.5640534
-5.1
30
Styrene
A
5.00
4.93
0.7890752
0.7786328
-1.3
30
1,1,2,2-Tetrachloroethane
A
5.00
4.74
0.9851261
0.9334995
-5.2
30
Tetrachloroethylene
A
5.00
4.55
0.457194
0.4158415
-9.0
30
Tetrahydroforan
A
5.00
4.66
0.2957092
0.2756011
-6.8
30
Toluene
A
5.00
4.76
1.15399
1.097652
-4.9
30
1,2,4-Trichlorobenzene
A
5.00
4.74
0.4973623
0.4718799
-5.1
30
1, 1, 1 -Trichloroethane
A
5.00
4.62
0.5975698
0.5521564
-7.6
30
1,1,2-Trichloroethane
A
5.00
4.58
0.4162703
0.381407
-8.4
30
Trichloroethylene
A
5.00
4.78
0.3947958
0.3778419
-4.3
30
Trichlorofluoromethane(Freon 11)
A
5.00
4.22
1.463327
1.2354
-15.6
30
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 11
A
5.00
4.16
1.432547
1.193325
-16.7
30
1,2,4-Trimethylbenzene
A
5.00
5.05
1.156019
1.168519
1.1
30
1,3,5-Trimethylbenzene
A
5.00
4.95
1.190388
1.177458
-1.1
30
Vinyl Acetate
A
5.00
4.41
1.986739
1.753653
-11.7
30
Vinyl Chloride
A
5.00
4.34
0.7142115
0.619608
-13.2
30
m&p-Xylene
A
10.0
9.84
1.129066
1.111134
-1.6
30
o-Xylene
A
5.00
4.92
1.138955
1.121473
-1.5
30
# Column to be used to flag Response Factor and %Diff/Drift values with an asterisk
* Values outside of QC limits
Page 21 of 26

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ' FAX [phone] " TEL. [phone]
CERTIFICATIONS
Certified Analyses included in this Report
Analyte
EPA TO-15 in Air
Acetone
Benzene
Benzyl chloride
Bromodichloromethane
Bromoform
Bromomethane
1,3-Butadiene
2-Butanone (MEK)
Carbon Disulfide
Carbon Tetrachloride
Chlorobenzene
Chloroethane
Chloroform
Chloromethane
Cyclohexane
Dibromochloromethane
1,2-Dibromoethane (EDB)
1,2-Dichlorobenzene
1,3-Dichlorobenzene
1,4-Dichlorobenzene
Dichlorodifluoromethane (Freon 12)
1,1-Dichloroethane
1,2-Dichloroethane
1,1-Dichloroethylene
cis-1,2-Dichloroethylene
trans- l,2-Dichloro ethylene
1,2-Dichloropropane
cis- 1,3 -Dichloropropene
trans- 1, 3 -Dichloropropene
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)
1,4-Dioxane
Ethanol
Ethyl Acetate
Ethylbenzene
4-Ethyltoluene
Heptane
Hexachlorobutadiene
Hexane
2-Hexanone (MBK)
Isopropanol
Methyl tart -Butyl Ether (MTBE)
Methylene Chloride
4-Methyl-2-pentanone (MIBK)
Naphthalene
Propene
Styrene
1,1,2,2-Tetrachloroethane
Certifications
AIHA,NY,ME,NH
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,NJ,NY,ME,NH,VA
AIHA,NJ,NY,ME,NH,VA
AIHA,FL,NJ,NY,ME,NH
AIHA,NJ,NY,ME,NH,VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,NJ,NY,ME,NH,VA
AIHA,NY,ME,NH
AIHA,NJ,NY,ME,NH
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,NJ,NY,ME,NH
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,NY,ME,NH
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,FL,NY,ME,NH,VA
AIHA,NJ,NY,ME,NH,VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,NY,ME,NH
AIHA,NJ,NY,ME,NH,VA
AIHA,NJ,NY,ME,NH,VA
AIHA
AIHA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,NJ
AIHA,NJ,NY,ME,NH,VA
AIHA,NJ,NY,ME,NH,VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA
AIHA,NY,ME,NH
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH
NY,ME,NH
AIHA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH,VA
Page 22 of 26

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ' FAX [phone] " TEL. [phone]
CERTIFICATIONS
Certified Analyses included in this Report
Analyte
EPA TO-15 in Air
Tetrachloroethylene
Tetrahydrofuran
Toluene
1,2,4-Trichlorobenzene
1, 1, 1 -Trichloroethane
1,1,2-Trichloroethane
Trichloroethylene
Trichlorofluoromethane (Freon 11)
1,1,2-Trichloro-1,2,2-ttifluoroethane (Freon 113)
1,2,4-Trimethylbenzene
1,3,5-Trimethylbenzene
Vinyl Acetate
Vinyl Chloride
m&p-Xylene
o-Xylene
Certifications
AIHA,FL,NJ,NY,ME,NH, VA
AIHA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,NJ,NY,ME,NH,VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,NY,ME,NH
AIHA,NJ,NY,ME,NH, VA
AIHA,NJ,NY,ME,NH
AIHA,NJ,NY,ME,NH
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA, FL,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH, VA
Con -Test, a Pace Environmental Laboratory, operates under the following certifications and accreditation:
Code
Description
Number
Expires
AHIA
AIHA-LAP, LLC - ISO 17025:2017
100033
03/l/2024
NY
New York State Department of Health
10899 NELAP
04/1/2023
NH
New Hampshire Environmental Lab
2516 NELAP
02/5/2023
NJ
New Jersey DEP
MA007 NELAP
06/30/2023
FL
Florida Department of Health
E871027 NELAP
06/30/2023
ME
State of Maine
MA00100
06/9/2023
VA
Commonwealth of Virginia
460217
12/14/2022
Page 23 of 26

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Page 24 of H

EedEx' Tracking
DELIVERED
Wednesday
10/19/2022 at 9:59 am
Signed for by: R.PETRAITIS.
Obtain Proof of delivery
DELIVERY STATUS
Delivered
® Get Status Updates
TRACKING ID
576725866978
FROM
Huntersville, NC US
Label Created
10/18/2022 2,31 PM
PACKAGE RECEIVED BY FEDEX
CONCORD, NC
10/18/2022 5:33 PM
IN TRANSIT
WINDSOR LOCKS, CT
10/19/2022 8:24 AM
OUT FOR DELIVERY
WINDSOR LOCKS, CT
10/ 19/202 2 8:31 AM
DELIVERED
EAST LONGMEADOW, MA US
DELIVERED
10/19/2022 at 9:59 AM
,� View travel history
Manage Delivery
u
Shipment facts v
Page 25 of 26

39 Spruce St.
East Longmeadow, MA. 01028
P: 413-525-2332
F: 413-525-6405
www.pacelabs.com
Air Media Sam
fiv
P�ce*
Doc# 278
PWPU anvxWNG SMERM
Rev 7 July 2022
ion Criteria Listing - Using Acceptance Policy) Any False
Statement will be brought to the attention of the Client - State True or False
Client
Received By
Date Mtc Time qsc,
How Were the samples In Cooler
On Ice No Ice
received? In Box
s Ambient Melted Ice
Were samples within Tempurature Within
By Gun # Actual Temp -
Compliance? 2-6°C
By Blank # Actual Temp -
Was Custody Seal In tact?
Were Samples Tampered with?
Was COC Relinquished ?
Does Chain Agree With Samples?
Are there any loose caps/valves on any samples?
Is COC in ink/ Legible? T
Were samples received within „holding time?
Did COC include all Pertinent Client?
fi Analysis? Sampler Name?
Information? Project?
ID's? Collection Dates/Times?
Are Sample Labels filled out and legible?
Are there Rushes? f�-
Who was notified?
Samples are received within holding time?
I_,
Proper Media Used? i
Individually Certified Cans? F
Are there Trip Blanks?
Is there enough Volume?
�w�t�
Summa Cans
LJ!
t�
Nut/Ferrule
'3
IC Train
Tedlar Bags
Tubing
TO-1 7 Tubes
T-Connector
Radiello
Syringe
Pufs/TO-11 s
Tedlar
Comments:
Page 26 of 26

Appendix F
DEQ Risk Calculators
10 hart 0 hickman
SMARTER EwuiuONMMIM. SOLUTIONS

North Carolina Department of Environmental Quality
Risk Calculator
Version Date:
July 2022
Basis:
May 2022 EPA RSL Table
Site Name:
Bookers Garage
Site Address:
1113-1121 Seigle Ave & 820 E. 15th St
DEQ Section:
DWM Brownfields
Site ID:
23074-19-060
Exposure Unit ID:
Worst Case - Northern Slab
Submittal Date:
11/29/2022
Prepared By:
H&H
Reviewed B
North Carolina DEQ Risk Calculator

Complete Exposure Pathways
Version Date: July 2022
Basis: May 2022 EPA RSL Table
Site ID: 23074-19-060
Exposure Unit ID: Worst Case - Northern Slab
Note: Risk output will only be calculated for complete exposure pathways.
Receptor
Pathway
Check box if
pathway
complete
DIRECT CONTACT SOIL AND WATER PATHWAYS
Resident
Soil
❑
Groundwater Use
❑
Non -Residential Worker
Soil
❑
Groundwater Use
❑
Construction Worker
Soil
❑
Recreator/Trespasser
Soil
❑
Surface Water
❑
VAPOR INTRUSION PATHWAYS
Resident
Groundwater to Indoor Air
❑
Soil Gas to Indoor Air
0
Indoor Air
❑
Non -Residential Worker
Groundwater to Indoor Air
❑
Soil Gas to Indoor Air
❑
Indoor Air
❑
CONTAMINANT MIGRATION PATHWAYS
Groundwater
Source Soil
❑
Source Groundwater
❑
Surface Water
Source Soil
❑
Source Groundwater
❑
North Carolina DEQ Risk Calculator

Exposure Point Concentrations
Version Date: July 2022
Basis: May 2022 EPA RSL Table
Site ID: 23074-19-060
Exposure Unit ID: Worst Case - Northern Slab
Soil Gas Exposure Point Concentration Table
Description 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.
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
Exposure Point
Minimum
Maximum
Location of
Range of
Concentration
Screening
Potential
Potential
Rationale for
Concentration
Notes:
CAS Number
Chemical
Concentration
Concentration
Units
Maximum
Detection
Detection
Used for
Background
Toxicity Value
ARAR/TBC
ARAR/TBC
COPC Flag
Selection or
(ug/m)
(Qualifier)
(Qualifier)
Concentration
Frequency
Limits
Screening
Value
(Screening
Value
Source
(Y/N)
Deletion
Level) (n/c)
3200
67-64-1
Acetone
ug/m3
2.1
75-15-0
Carbon Disulfide
ug/m3
2.4
75-71-8
Dichlorodifluoromethane
ug/m3
8300
109-99-9
—Tetrahydrofuran
ug/m3
36
67-63-0
Isopropanol
ug/m3
740
78-93-3
Methyl Ethyl Ketone (2-Butanone)
ug/m3
4.5
108-88-3
Toluene
ug/m3
9.6
95-63-6
Trimethylbenzene, 1,2,4-
u9/m3
North Carolina DEQ Risk Calculator

Risk for Individual Pathways
1
Version Date: July 2022
Basis: May 2022 EPA RSL Table
Site ID: 23074-19-060
Exposure Unit ID: Worst Case - Northern Slab
DIRECT CONTACT SOIL AND WATER CALCULATORS
Receptor
Pathway
Carciinnogenic
sk
Hazard Index
Risk exceeded?
Resident
Soil
NC
NC
NC
Groundwater Use*
NC
NC
NC
Non -Residential Worker
Soil
NC
NC
NC
Groundwater Use*
NC
NC
NC
Construction Worker
Soil
NC
NC
NC
Recreator/Trespasser
Soil
NC
NC
NC
NC
Surface Water*
NC
NC
VAPOR INTRUSION CALCULATORS
Receptor
Pathway
Carciinn kenic
Hazard Index
Risk exceeded?
Resident
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
0.0E+00
4.0E-02
NO
Indoor Air
NC
NC
NC
Non -Residential Worker
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
NC
NC
NC
Indoor Air
NC
NC
NC
CONTAMINANT MIGRATION CALCULATORS
Pathway
Source
Target Receptor Concentrations Exceeded?
Groundwater
Source Soil
Exceedence of 2L at Receptor?
NC
Source Groundwater
Exceedence of 2L at Receptor?
NC
Surface Water
Source Soil
Exceedence of 2B at Receptor?
NC
Source Groundwater
Exceedence of 213 at Receptor?
NC
Notes:
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.
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 213 Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk -based
closure.
3. NM = Not Modeled
4. NC = Pathway not calculated
North Carolina DEQ Risk Calculator

DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air 1
Version Date: July 2022
Basis: May 2022 EPA RSL Table
Site ID: 23074-19-060
Unit ID: Worst Case - Northern Slab
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.
All concentrations are in u m3
Calculated
Target Indoor
Target Indoor Air
Calculated
Soil Gas
Indoor Air
Air Conc. for
Conc. for Non -
Calculated
Non -
CAS #
Chemical Name:
Concentration
Carcinogenic
Carcinogenic
3
(ug/m)
Concentration
Carcinogens @
Carcinogens @
Risk
Hazard
(ug/ms)
TCR = 1 E-06
THQ = 0.2
Quotient
67-64-1
Acetone
120
3.6
-
-
74-87-3
Chloromethane
1.5
0.045
-
1.9E+01
4.8E-04
156-59-2
Dichloroethylene, cis-1,2-
1.6
0.048
-
-
109-99-9
—Tetrahydrofuran
2200
66
-
4.2E+02
3.2E-02
67-63-0
Isopropanol
8.6
0.258
-
4.2E+01
1.2E-03
78-93-3
Methyl Ethyl Ketone (2-Butanone)
1200
36
-
1.0E+03
6.9E-03
100-42-5
Styrene
4.8
0.144
-
2.1 E+02
1.4E-04
108-88-3
Toluene
4.5
0.135
-
1.0E+03
2.6E-05
Cumulative: I 0.0E+00 I4.0E-02
North Carolina DEQ Risk Calculator

North Carolina Department of Environmental Quality
Risk Calculator
Version Date:
July 2022
Basis:
May 2022 EPA RSL Table
Site Name:
Bookers Garage
Site Address:
1113-1121 Seigle Ave & 820 E. 15th St
DEQ Section:
DWM Brownfields
Site ID:
23074-19-060
Exposure Unit ID:
Worst Case
Submittal Date:
11/29/2022
Prepared By:
H&H
Reviewed B
North Carolina DEQ Risk Calculator

Complete Exposure Pathways
Version Date: July 2022
Basis: May 2022 EPA RSL Table
Site ID: 23074-19-060
Exposure Unit ID: Worst Case
Note: Risk output will only be calculated for complete exposure pathways.
Receptor
Pathway
Check box if
pathway
complete
DIRECT CONTACT SOIL AND WATER PATHWAYS
Resident
Soil
❑
Groundwater Use
❑
Non -Residential Worker
Soil
❑
Groundwater Use
❑
Construction Worker
Soil
❑
Recreator/Trespasser
Soil
❑
Surface Water
❑
VAPOR INTRUSION PATHWAYS
Resident
Groundwater to Indoor Air
❑
Soil Gas to Indoor Air
0
Indoor Air
❑
Non -Residential Worker
Groundwater to Indoor Air
❑
Soil Gas to Indoor Air
❑
Indoor Air
❑
CONTAMINANT MIGRATION PATHWAYS
Groundwater
Source Soil
❑
Source Groundwater
❑
Surface Water
Source Soil
❑
Source Groundwater
❑
North Carolina DEQ Risk Calculator

Exposure Point Concentrations
Version Date: July 2022
Basis: May 2022 EPA RSL Table
Site ID: 23074-19-060
Exposure Unit ID: Worst Case
Soil Gas Exposure Point Concentration Table
Description 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.
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
Exposure Point
Minimum
Maximum
Location of
Range of
Concentration
Screening
Potential
Potential
Rationale for
Concentration
Notes:
CAS Number
Chemical
Concentration
Concentration
Units
Maximum
Detection
Detection
Used for
Background
Toxicity Value
ARAR/TBC
ARAR/TBC
COPC Flag
Selection or
(ug/m)
(Qualifier)
(Qualifier)
Concentration
Frequency
Limits
Screening
Value
(Screening
Value
Source
(Y/N)
Deletion
Level) (n/c)
120
67-64-1
Acetone
ug/m3
1.5
74-87-3
Chloromethane
ug/m3
1.6
156-59-2
Dichloroethylene, cis-1,2-
ug/m3
2200
109-99-9
—Tetrahydrofuran
ug/m3
8.6
67-63-0
Isopropanol
ug/m3
1200
78-93-3
Methyl Ethyl Ketone (2-Butanone)
ug/m3
4.8
100-42-5
Styrene
ug/m3
3.8
108-88-3
Toluene
u9/m3
North Carolina DEQ Risk Calculator

Risk for Individual Pathways
1
Version Date: July 2022
Basis: May 2022 EPA RSL Table
Site ID: 23074-19-060
Exposure Unit ID: Worst Case
DIRECT CONTACT SOIL AND WATER CALCULATORS
Receptor
Pathway
Carciinnogenic
sk
Hazard Index
Risk exceeded?
Resident
Soil
NC
NC
NC
Groundwater Use*
NC
NC
NC
Non -Residential Worker
Soil
NC
NC
NC
Groundwater Use*
NC
NC
NC
Construction Worker
Soil
NC
NC
NC
Recreator/Trespasser
Soil
NC
NC
NC
NC
Surface Water*
NC
NC
VAPOR INTRUSION CALCULATORS
Receptor
Pathway
Carciinn kenic
Hazard Index
Risk exceeded?
Resident
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
0.0E+00
4.0E-02
NO
Indoor Air
NC
NC
NC
Non -Residential Worker
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
NC
NC
NC
Indoor Air
NC
NC
NC
CONTAMINANT MIGRATION CALCULATORS
Pathway
Source
Target Receptor Concentrations Exceeded?
Groundwater
Source Soil
Exceedence of 2L at Receptor?
NC
Source Groundwater
Exceedence of 2L at Receptor?
NC
Surface Water
Source Soil
Exceedence of 2B at Receptor?
NC
Source Groundwater
Exceedence of 213 at Receptor?
NC
Notes:
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.
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 213 Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk -based
closure.
3. NM = Not Modeled
4. NC = Pathway not calculated
North Carolina DEQ Risk Calculator

DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air 1
Version Date: July 2022
Basis: May 2022 EPA RSL Table
Site ID: 23074-19-060
Unit ID: Worst Case
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.
All concentrations are in u m3
Calculated
Target Indoor
Target Indoor Air
Calculated
Soil Gas
Indoor Air
Air Conc. for
Conc. for Non -
Calculated
Non -
CAS #
Chemical Name:
Concentration
Carcinogenic
Carcinogenic
3
(ug/m)
Concentration
Carcinogens @
Carcinogens @
Risk
Hazard
(ug/ms)
TCR = 1 E-06
THQ = 0.2
Quotient
67-64-1
Acetone
120
3.6
-
-
74-87-3
Chloromethane
1.5
0.045
-
1.9E+01
4.8E-04
156-59-2
Dichloroethylene, cis-1,2-
1.6
0.048
-
-
109-99-9
—Tetrahydrofuran
2200
66
-
4.2E+02
3.2E-02
67-63-0
Isopropanol
8.6
0.258
-
4.2E+01
1.2E-03
78-93-3
Methyl Ethyl Ketone (2-Butanone)
1200
36
-
1.0E+03
6.9E-03
100-42-5
Styrene
4.8
0.144
-
2.1 E+02
1.4E-04
108-88-3
Toluene
3.8
0.114
-
1.0E+03
2.2E-05
Cumulative: I 0.0E+00 I4.0E-02
North Carolina DEQ Risk Calculator