19067_Gateway Plaza_VIRpt_20211102

Mid Atlantic
Engineering & Environmental Solutions
November 2, 2021
Mr. Henry Ward
c/o Elixir Retail Partners, LLC
Loden Properties
1207 Front Street, Suite 100
Raleigh, North Carolina 27609
409 Rogers View Court
Raleigh, NC 27610
office 919.250,9918
facsimile 919.250.9950
MAAONLINE.COM
Subject: SUPPLEMENTAL SUB -SLAB AND INDOOR AIR ASSESSMENT REPORT
GATEWAY PLAZA SHOPPING CENTER — CODE NINJAS
2427 CRABTREE BOULEVARD
RALEIGH, NORTH CAROLINA
MID -ATLANTIC JOB NO. 000R2667.01
Dear Mr. Ward:
We are pleased to present this Sub -Slab and Indoor Air Assessment Report for the above -
referenced site. We appreciate the opportunity to provide Loden Properties and Elixir
Retail Partners, LLC with environmental services. Please contact me at 919-250-9918 if
any questions arise or if we may be of further service.
Sincerely,
MID -ATLANTIC ASSOCIATES, INC.
Kevin R. Clay, P.G
Project Geologist
Darin McClure, P.E.
Principal Engineer
EXPERIENCED CUSTOMER FOCUSED INNOVATIVE

SUPPLEMENTAL SUB -SLAB AND INDOOR AIR ASSESSMENT REPORT
GATEWAY PLAZA SHOPPING CENTER - CODE NINJAS
2427 CRABTREE BOULEVARD
RALEIGH, NORTH CAROLINA
BROWNFIELDS PROJECT NUMBER 19067-15-092
MID -ATLANTIC PE LICENSE: F-0967
MID -ATLANTIC JOB NUMBER: OOOR2667.01
Prospective Developer:
Elixir Retail Partners, LLC
Henry Ward
821 Wake Forest Road
Raleigh, North Carolina 27604
Phone: [phone]
Email: henry(a)lodenproperties.com
Consultant:
Mid -Atlantic Associates, Inc.
Darin M. McClure, PE
409 Rogers View Court
Raleigh, North Carolina, 27610
Phone: [phone]
Email: dmcclure(a)maaonline.com
Brownfields Project Manager:
Sharon Eckard
Mail Service Center 1646
Raleigh, North Carolina, 27699
Phone: [phone]
Email: sharon.eckard cbncdenr.gov
Darin M. McClure, P
Principal Engineer
Mid Atlantic

TABLE OF CONTENTS
1.0 GENERAL INFORMATION....................................................................................1
1.1 Introduction........................................................................................................... 1
1.2 Laboratory............................................................................................................ 2
2.0 SUMMARY OF FIELD ACTIVITIES........................................................................2
2.1 Indoor Air Sample Collection................................................................................ 3
2.2 Soil Gas Sample Collection.................................................................................. 3
2.2.1 Vapor Pin Installation Procedures................................................................... 3
2.2.2 Helium Leak Check Procedures......................................................................4
2.2.3 Sample Collection Procedures........................................................................4
3.0 SUMMARY OF LABORATORY ANALYTICAL RESULTS .................................... 5
3.1 Indoor Air Sampling Results................................................................................. 5
3.2 Soil Gas Sampling Results................................................................................... 6
3.3 Risk Calculations.................................................................................................. 6
4.0 QUALITY ASSURANCE......................................................................................... 7
5.0 FINDINGS AND CONCLUSIONS...........................................................................7
FIGURES
Figure 1 Topographic Site Map
Figure 2 Sample Location Map
Figure 3 Sample Location and Space Layout Map
TABLES
Table 1 Property Summary
Table 2 Sampling Summary
Table 3 Constituents Analyzed in Indoor Air and Risk Calculations
Table 4 Constituents Analyzed in Soil Gas And Risk Calculations
APPENDICES
Appendix A Vapor Intrusion Assessment Work Plan & Report Checklist
Appendix B Indoor Air Building Survey and Sampling Form
Appendix C Laboratory Analytical Report and Chain -of -Custody Record for
Sub -Slab Soil Gas and Indoor/Ambient Air Samples
Appendix D Sub -Slab Soil Gas and Indoor Air Intrusion Risk Calculations
0 Mid Atlantic

1.0 GENERAL INFORMATION
1.1 Introduction
The following table provides a brief summary of the history of the subject site. Please see
Appendix A for a copy of the Vapor Intrusion Assessment Work Plan & Report Checklist as it
pertains to this report.
Property Size
6.77-Acres
The Brownfields Agreement for this site was recorded at the Wake
County Register of Deeds office on March 26, 2021. The former T &
Regulatory History
J Cleaner space has been undergoing assessment and remediation
through the Dry -Cleaning Solvent Cleanup Act (DSCA) Program
since the early 2000s (DSCA ID — DC920021).
Wooded and agricultural until the 1960s when the current shopping
center was constructed. A series of dry-cleaners operated in one
location at the site from the 1960s until May 2012, when T & J
Former/Current Uses
Cleaners closed. The site is currently used as a mix of retail, food
production, brewery and office spaces. The Code Ninjas space was
once part of a larger tenant space that was occupied by the Cause
For Paws Thrift Store and before that a Winn -Dixie grocery store.
Potential Vapor Intrusion (VI)
The documented release of solvents to soil and groundwater from the
Sources
former T & J Cleaners space.
RECs from Phase I ESA
The documented groundwater and soil contamination attributed to the
former dry-cleaning operations at the site.
Conceptual Site Model
Not applicable — scope requested by NCBP
Scope from Data Gap Meeting
Not applicable — scope requested by NCBP
The approved uses for the site are hotel, retail, restaurant, brewery,
food production, office space, rental storage,
Proposed Use
event/performance/exhibition space, and associated parking, and
subject to DEQ's prior written approval, other commercial uses,
including childcare, drop -in childcare, educational spaces, and senior
facility.
Demolition, new construction,
No new buildings therefore not applicable.
foundation type
Re -use of Existing Structures
Existing structures are being re -used.
Presence of elevators & stairwells
None in the Code Ninjas space.
Parking & contamination
Not applicable. Redevelopment has/will not disturb known
contaminated soil.
Assessment Areas
The Code Ninjas space consists of 2,061 square feet and is occupied
by a children's drop -in computer learning company.
Proposed Uses
Assessment was conducted to determine whether Code Ninjas is an
appropriate use for that space.
A topographic site map is included as Figure 1. A current site map is
Pertinent Attachments
included as Figure 2. A summary of site information is included as
Table 1.
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Supplemental Sub -Slab and Indoor Air Assessment Report November 2, 2021
Gateway Plaza — Code Ninjas Page 2
Raleigh, North Carolina
Brownfield Project Number 19067-15-092
1.2 Laboratory
Con -Test Analytical Laboratory
39 Spruce Street
East Longmeadow, Massachusetts 01028
[phone]
N.C. Certification No. 652
AIHA-LAP Lab ID: LAP-100033
Contact: Ms. Kerry McGee
2.0 SUMMARY OF FIELD ACTIVITIES
The scope of work conducted as part of this vapor assessment was conducted in general
accordance with the field procedures outlined in the August 26, 2021 Sub -slab and Indoor
Air Assessment Work Plan (Work Plan) prepared by Mid -Atlantic and approved by the
North Carolina Department of Environmental Quality (NCDEQ) Brownfields Program. As
described in the Work Plan, Mid -Atlantic collected two indoor air samples, two sub -slab
samples, an ambient outdoor air sample, and duplicate indoor air and sub -slab soil gas
samples. See Table 2 for a summary of assessment details. Sampling was performed in
general accordance with the following documents:
• Brownfields Program Vapor Intrusion Assessment Work Plan & Report Checklist (July
2021);
• Inactive Hazardous Sites Program Guidelines for Assessment and Cleanup of
Contaminated Sites (January 2020);
• North Carolina Department of Environmental Quality, Division of Waste Management,
Vapor Intrusion Guidance (March 2018); and
• The Interstate Technology & Regulatory Council Vapor Intrusion Mitigation Training
Team Technical Resources for Vapor Mitigation Training (December 2020).
On September 9, 2021, Mid -Atlantic conducted a site reconnaissance to identify potential
sources of indoor air contaminants inside the Code Ninjas space. The results of the survey
are included in the Indoor Air Building Survey and Sampling Form (Appendix B). During
the performance of the survey, house cleaning products, hairspray, and air fresheners were
found inside the space in small quantities (<5 gallons) and not removed. The tenant of the
space indicated that new furniture/upholstery and new carpeting was installed in March.
The HVAC unit was also in operation during the time of the site reconnaissance and
remained in operation through completion of the sampling activities. The Code Ninjas
space was not in use during sampling and the HVAC system was operational. During
sampling, the Code Ninjas space was kept locked to prevent access to the Summa
canisters.
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Gateway Plaza — Code Ninjas Page 3
Raleigh, North Carolina
Brownfield Project Number 19067-15-092
2.1 Indoor Air Sample Collection
On September 13, 2021, Mid -Atlantic mobilized to the site to collect two indoor air samples
inside the space ("IA-CN-1" and "IA-CN-2"), one duplicate sample ("IA-CN-2-DUP"), and
one ambient air sample ("Ambient"). These indoor air samples were collected inside the
classroom space where children spend most of their time in the building. These samples
were collected using laboratory supplied 6-liter, individually certified, stainless -steel
Summa canisters and flow regulators designed to restrict the maximum flow rate to 8-10
mL/min. The intakes for the canisters were set approximately between 3.5 feet above the
floor. The canisters used during indoor air sampling activities were confirmed to have
retained greater than 90% of their initial volume (>27" Hg) prior to sampling. The canisters
were left open over an approximately 8-hour period and closed once 8 hours had passed
or a vacuum of 5" Hg was achieved. In the 24 hours prior to sampling, the space was used
under normal operating conditions with the HVAC system operational. The duplicate indoor
air sample was collected concurrently with the primary sample. Approximate sample
locations are shown on Figures 2 and 3. The layout of the Code Ninjas Space is shown
on Figure 3. The canisters were analyzed in the laboratory for VOCs according to EPA
Method TO-15 (full list).
2.2 Soil Gas Sample Collection
Mid -Atlantic returned to the subject site on September 14, 2021 to collect two sub -slab soil
gas samples ("SS-CN-1" and "SS-CN-2") and a duplicate ("SS-CN-2-DUP") from beneath
the slab in the Code Ninjas space in the areas coincident with the indoor air sample
locations. These locations were also selected to be greater than five feet away from exterior
walls. Crawl spaces, tunnels, basements, sub -grade walls, and footer walls were not
encountered during this assessment. The building is understood to have utilities located
beneath the slab.
2.2.1 Vapor Pin Installation Procedures
Sections of the carpet were removed and sub -slab borings were advanced inside the Code
Ninjas space on September 14, 2021 to support the installation of a vapor pins and collection
of sub -slab soil gas samples. The samples were collected from beneath the approximate
locations of the indoor air samples. To create the sub -slab sampling port, a rotary -impact
drill equipped with a decontaminated spline drill bit was utilized to drill a 5/8-inch diameter
hole through the concrete slab. The concrete slab was approximately eight inches thick and
appeared to have a gravel base beneath the slab. Upon completion, a vapor sampling probe
was established using a new "Vapor Pin TM" which utilizes a brass barb fitting with a silicone
sleeve to create a seal with the concrete when inserted using an installation/extraction tool.
The vapor pin was then fitted with'/4-inch outer diameter Teflon -lined tubing to complete the
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Supplemental Sub -Slab and Indoor Air Assessment Report November 2, 2021
Gateway Plaza — Code Ninjas Page 4
Raleigh, North Carolina
Brownfield Project Number 19067-15-092
vapor sampling probe assembly. Subsequent helium leak check and soil gas sampling
activities are discussed below in Sections 2.2.2 and 2.2.3, respectively.
2.2.2 Helium Leak Check Procedures
A leak check was be performed at each probe location using a plastic shroud, helium gas
and a portable helium gas detector after the vapor probe location was allowed to equilibrate
for at least 20 minutes. A plastic shroud was placed over the sub -slab vapor probe location
and entire sampling train with the tubing of the probe exiting the shroud through a small
hole. A 3-way valve will be placed on the probe termination and connected to the sampling
apparatus. Helium was introduced into the shroud via tubing from the cylinder into the
shroud, and a grab sample was collected by filling a Tedlar bag using the exhaust port of
the purge syringe while purging the sample location of a minimum of three system volumes
of air at a rate of approximately 200 mL/min. One system volume was approximately 60 mL
and each location was purged of approximately 600 mL. Helium concentrations of 200,000
to 300,000 parts per million were maintained within the shroud during purging. The results
of Mid -Atlantic's helium leak checks at each sample location are as follows:
Sam le ID
Helium Concentration Under
Shroud
Helium Concentration
in Tedlar Bag
SS-CN-1
23.6 % 236,000 PPM
600 PPM
SS-CN-2
23.9 % 239,000 PPM
375 PPM
SS-CN-2-DUP
21.9 % 219,000 PPM
775 PPM
Because the helium concentrations detected in the Tedlar bag was less than 10% of the
concentration under the shroud during leak testing, the seals around the vapor probe were
considered acceptable.
2.2.3 Sample Collection Procedures
After performing the helium leak check at the interior sub -slab soil gas sample locations,
sub -slab soil gas samples were collected using laboratory supplied, batch -certified, 1-liter,
stainless steel canisters at a maximum flow rate of 200 mL/min. The canisters used during
sub -slab sampling activities were confirmed to have retained greater than 90% of their
initial volume (>27" Hg) prior to sampling. The canisters were left open over an
approximately 5-minute period and closed once a vacuum of 5" Hg was achieved. Once
primary sample SS-CN-2 was collected, the Summa canister was disconnected, the
duplicate was connected to the sample location and leak tested as described above. The
seal around the vapor probe was considered to be acceptable and duplicate SS-CN-2-
DUP was collected using a Summa canister identical to the one used for the primary
sample.
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Supplemental Sub -Slab and Indoor Air Assessment Report November 2, 2021
Gateway Plaza — Code Ninjas Page 5
Raleigh, North Carolina
Brownfield Project Number 19067-15-092
Upon collection, the soil gas samples were shipped to Con -Test Analytical Laboratory in
East Longmeadow, Massachusetts under proper chain of custody for analysis. The
canisters were analyzed in the laboratory for VOCs according to EPA Method TO-15 (full
list). As noted in the Work Plan, mercury contamination is not expected at the site and
samples were not submitted for mercury vapor analysis. Once field activities were
completed, the vapor probes were removed from the concrete slab and filled with
hydraulic cement. The carpet was placed back over the point and secured using an
adhesive.
3.0 SUMMARY OF LABORATORY ANALYTICAL RESULTS
3.1 Indoor Air Sampling Results
The laboratory analytical report and chain -of -custody record for indoor air samples collected
in September 2021 are provided in Appendix C and summarized in Table 2. The results of
the indoor air sampling activities were compared to the NCDEQ June 2021 Residential and
Non -Residential Indoor Air Screening Levels (IASLs). As summarized, benzene, carbon
tetrachloride, chloroform, and naphthalene were detected in the indoor air sample and
duplicate exceeding Residential and IASLs. Of these compounds, benzene and carbon
tetrachloride were each detected in greater concentrations in indoor air and/or ambient air
samples than observed in the sub -slab soil gas samples. Chloromethane,
dichlorodifluoromethane, ethylbenzene, heptane, styrene, and toluene were also detected
in indoor air at concentrations that exceeded or were equal to sub -slab soil gas
concentrations, but at concentrations below their respective IASLs. This may indicate that
there is an indoor source contributing to these detections unrelated to vapor intrusion.
Benzyl chloride, bromodichloromethane, 1,2-dibromoethane, hexachlorobutadiene,
naphthalene, and 1,1,2-trichloroethane had laboratory method detection limits (MDLs)
above their respective Residential and/or Non -Residential IASLs. The MDLs for these
compounds were entered into the risk calculator as applicable during our risk assessment
(Section 3.3).
Multiple compounds including acetone, benzene, 2-butanone, carbon tetrachloride,
chloroform, chloromethane, dichlorodifluoromethane, methylene chloride, naphthalene,
toluene, and trichlorofluoromethane were detected in the ambient air sample at
concentrations equivalent to the indoor air sample. This suggests that outdoor air
contaminants may also be contributing to concentrations found in the indoor air at the site.
Several other VOCs were detected in the indoor air samples and duplicate indoor air sample
at concentrations above laboratory method detection limits but below the Residential IASLs.
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Supplemental Sub -Slab and Indoor Air Assessment Report November 2, 2021
Gateway Plaza — Code Ninjas Page 6
Raleigh, North Carolina
Brownfield Project Number 19067-15-092
Additional discussion regarding risk calculations for the constituents detected in indoor air is
provided in Section 3.3.
3.2 Soil Gas Sampling Results
The laboratory analytical report and chain -of -custody record for soil gas samples collected
in September 2021 are provided in Appendix C and summarized in Table 3. The results of
the soil gas sampling activities were compared to the June 2021 Residential and Non -
Residential Soil Gas Screening Levels (SGSLs) and a cumulative risk evaluation was
performed. As summarized, several VOCs were detected in the primary sub -slab soil gas
sample and the duplicate sub -slab soil gas sample at concentrations above laboratory
method detection limits. However, the VOC concentrations did not exceed the DWM
Residential or Non -Residential SGSLs. 1,2-Dibromoethane was not detected; however, its
MDL exceeded its residential SGSL. As such, a concentration equal to its MDL was entered
into the risk calculator during our risk evaluation discussed below in Section 3.3.
3.3 Risk Calculations
The Division of Waste Management (DWM) establishes vapor intrusion SGSLs and indoor
air IASLs for individual compounds for both Residential and Non -Residential
(industrial/commercial) exposure scenarios. The North Carolina Brownfields Program allows
a maximum cumulative cancer risk for all carcinogens of 1.0E-4 and a maximum cumulative
hazard index (HI) of 1 for all non -carcinogens in soil gas and indoor air. Mid -Atlantic
compared the sub -slab and indoor air sampling results to the DWM Residential and Non -
Residential SGSLs/IASLs then calculated the cancer risk and non -cancer risk hazard
quotient for each compound detected above the MDL. Residential and Non -Residential
cumulative cancer risk and cumulative non -cancer hazard indexes were then determined
for the sub -slab soil gas and indoor air samples using the highest detected concentration for
each compound in the primary samples and duplicate samples (Appendix D). The
cumulative Residential and Non -Residential exposure cancer risk sums and non -cancer
hazard indexes for the sub -slab soil gas samples is summarized in the following table:
Indoor Air Risk Calculations
Non -Residential
Non -Residential
Residential
Residential
Exposure Unit
Calculated
Cumulative Non-
Calculated
Cumulative Non -
Carcinogenic
Carcinogenic
Carcinogenic
Carcinogenic
Risk Sum
Hazard Index
Risk Sum
Hazard Index
Code Ninjas
7.0 X 10-6
1.6 X 10-'
3.0 X 10-5
6.7 X 10-'
As indicated, the cancer risk sum and cumulative non -cancer hazard index for the indoor air
samples did not exceed the target risk sum of 1.0E-4, nor the target cumulative non -cancer
hazard index of 1, for either the Residential or Non -Residential exposure scenarios.
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Supplemental Sub -Slab and Indoor Air Assessment Report November 2, 2021
Gateway Plaza — Code Ninjas Page 7
Raleigh, North Carolina
Brownfield Project Number 19067-15-092
Residential and Non -Residential cumulative cancer risk and cumulative non -cancer hazard
indexes were then determined for the indoor air sample using the highest detected
concentration for each compound in the primary samples and duplicate sample, and for the
ambient air sample (Appendix D). The Residential and Non -Residential exposure cancer
risk sums and non -cancer hazard indexes for the indoor and ambient air samples are
summarized in the following table:
Sub -Slab Soil Gas Risk Calculations
Non -Residential
Non -Residential
Residential
Residential
Exposure Unit
Calculated
Cumulative Non-
Calculated
Cumulative Non -
Carcinogenic
Carcinogenic
Carcinogenic
Carcinogenic
Risk Sum
Hazard Index
Risk Sum
Hazard Index
Code Ninjas
2.7 x 10-7
7.8 x 10-1
3.6 X 10-6
9.8 X 10-2
As indicated, the cumulative non -carcinogenic hazard index for the sub -slab soil gas
samples did not exceed the target risk sum of 1.0E-4, nor the target cumulative non -cancer
hazard index of 1, for either the Residential or Non -Residential exposure scenarios.
4.0 QUALITY ASSURANCE
One duplicate sub -slab and one duplicate indoor air sample were collected during
sampling activities. The duplicate samples were analyzed for EPA Compendium Method
TO-15. Mid -Atlantic filled each laboratory provided Summa canister such that the final
vacuum in the canister was at least five inches of mercury. For indoor/ambient air
samples, the summa canisters were shut off after 8-hours. The chain -of -custody was
completed and packed with the samples. The Mid -Atlantic field technician returned to the
office with the packed boxes which were picked up by a Con -Test courier. The courier
then hand delivered the boxes to a national carrier for delivery to the laboratory located
in East Longmeadow, Massachusetts. The laboratory report in Appendix B reports level
II QA/QC.
5.0 FINDINGS AND CONCLUSIONS
The overall objective of this assessment was to determine if a drop -in computer learning
facility was an appropriate use for the space occupied by Code Ninjas. Mid -Atlantic offers
the following conclusions based on the results of this assessment as they pertain to the
subject site:
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Supplemental Sub -Slab and Indoor Air Assessment Report November 2, 2021
Gateway Plaza — Code Ninjas Page 8
Raleigh, North Carolina
Brownfield Project Number 19067-15-092
• Several constituents were detected in sub -slab soil gas samples at concentrations
above laboratory method detection limits, but below their respective DWM
Residential and Non -Residential SGSLs;
• Four VOCs were detected in both the primary and duplicate indoor air samples at
concentrations exceeding their respective Non -Residential or Residential VISLs;
• Multiple constituents were detected in indoor air samples at concentrations greater
than observed in sub -slab soil gas samples, including: benzene, carbon
tetrachloride, chloromethane, dichlorodifluoromethane, ethylbenzene, heptane,
styrene, and toluene. This points to indoor air contributions of these compounds;
• Multiple constituents were detected in indoor air samples at concentrations
roughly equivalent to the outdoor ambient air sample, including: acetone,
benzene, 2-butanone, carbon tetrachloride, chloroform, chloromethane,
dichlorodifluoromethane, methylene chloride, naphthalene, toluene, and
trichlorofluoromethane. This points to outdoor air contributions of these
compounds; and,
• The Residential/Non-Residential cancer risk and Residential/Non-Residential
cumulative non -cancer hazard index for the sub -slab soil gas and indoor air samples
did not exceed the target risk sum of 1.0E-4, nor the target cumulative non -cancer
hazard index of 1.
Based on the data collected during this investigation, vapor intrusion does not appear to
be causing an unacceptable risk in the Code Ninjas space. As such, it appears a drop -in
computer learning facility should be an approved use for this part of the facility.
Q Mid Atlantic

DRAWINGS
0 Mid Atlantic

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REFERENCES:
1. WAKE, NC DIGITAL RASTER GRAPHICS,
USGS. SCANNED FROM 1:24,000-SCALE RALEIGH EAST, NC SCALE: 1:13,144
TOPOGRAPHIC MAPS, PUBLISHED 2016, USGS.
2. INSET MAP DIGITAL DATA FROM 2002 NATIONAL TRANSPORTATION ATLAS, 0 2.25 4.5 9 13.5 18
BUREAU OF TRANSPORTATION STATISTICS, WASHINGTON, D.C. Miles
3. PROPERTY BOUNDARY DATA FROM WAKE COUNTY GIS.
TOPOGRAPHIC SITE MAP DRAWN DATE:
BY: GCH AUGUST 2019
DRAFT JOB NO:
Mid Atlantic
GATEWAY PLAZA CHECK: 00OR2667.01
Engineering & Environmental Solutions 2409 CRABTREE BLVD ENG. GIS NO:
RALEIGH, NORTH CAROLINA CHECK: 2G-R3667.01
APPROVAL: FIGURE NO: 1

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Mid Atlantic
Engineering & Environmental Solutions
SAMPLE LOCATION MAP
GATEWAY PLAZA SHOPPING CENTER
CODE NINJAS
2427 CRABTREE BOULEVARD
RALEIGH, NORTH CAROLINA
DRAWN BY:
DATE: MAY2021
BY DRAFT CHECK
JOB NO.: 00OR2667.01
ENGINEER CHECK
BY:
GIS NO.: 02G-R2667.01-2-CN-2021
APPROVED BY:
FIGURE NO.: 2
REFERENCE: PARCEL AND ROAD GIS DATA FROM WAKE COUNTY GIS. AERIAL IMAGERY FROM NC ONEMAP. MID -ATLANTIC FIELD NOTES.

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=Parcel Boundaries 25 feet
A Paired Sub -Slab and Indoor Air Sample Location Z 0 -1 Brownfields Property Boundary �0 25 50 75
,� Feet
SAMPLE LOCATION AND SPACE LAYOUT MAP DRAWN BY: DATE: OCTOBER 2021
Mid Atlantic GATEWAY PLAZA SHOPPING CENTER DRAFT CHECK
By JOB NO.: 00OR2667.01
CODE NINJAS ENGINEER CHECK
Engineering & Environmental Solutions 2427 CRABTREE BOULEVARD BY: GIS NO.: 02G-R2667.01-3-CN-2021
RALEIGH, NORTH CAROLINA APPROVED FIGURE NO.: 3
BY:
REFERENCE: PARCEL GIs DATA FROM WAKE COUNTY GIS. AERIAL IMAGERY FROM NC ONEMAP. MID -ATLANTIC FIELD NOTES. BUILDING LAYOUT FROM LODEN PROPERTIES

TABLES
0 Mid Atlantic

TABLE 1
PROPERTY SUMMARY
GATEWAY PLAZA SHOPPING CENTER - CODE NINJAS SPACE
2427 CRABTREE BOULEVARD
RALEIGH, NORTH CAROLINA
BF PROJECT NO.
PARCEL NO.
ADDRESS
SITE
FORMER/CURRENT USE
RECS
PROPOSED USE
ACREAGE
Wooded and agricultural until the 1960s
when the current shopping center was
constructed. A series of dry-cleaners operated
The documented groundwater and soil
2427 Crabtree Blvd.
19067-15-092
1714-48-5236
6.77
in one location at the site from the 1960s
contamination attributed to the former dry
Same as current use.
Raleigh, NC
until May 2012, when T & J Cleaners closed.
cleaning operations at the site.
The site is currently used as a mix of retail,
food production, brewery and office spaces.
RECS - Recognized Environmental Conditions

TABLE 2
SAMPLING SUMMARY
GATEWAY PLAZA SHOPPING CENTER - CODE NINJAS SPACE
2427 CRABTREE BOULEVARD
RALEIGH, NORTH CAROLINA
SAMPLE ID
SAMPLE
LOCATION
SAMPLING OBJECTIVE
SAMPLE
TYPE
DEPTH OF
SAMPLE
ANALYTICAL METHOD
TARGET TCE DETECTION LIMIT (ug/m3)
SS-CN-1
Code Ninjas
Assessment
SG
*
TO-15
0.40
SS-CN-2
Code Ninjas
Assessment
SG
*
TO-15
0.40
SS-CN-2 Dup
Code Ninjas
Duplicate
SG
*
TO-15
0.40
IA-CN-1
Code Ninjas
Assessment
IA
**
TO-15
0.069
IA-CN-2
Code Ninjas
Assessment
IA
**
TO-15
0.069
IA-CN-2 Dup
Code Ninjas
Duplicate
IA
**
TO-15
0.069
Ambient
Outside
Ambient
IA
**
TO-15
0.069
SG - Sub -slab soil gas sample IA - Indoor Air Sample
NA - Not Applicable ug/m3 - Micrograms Per Cubic Meter *
Directly Below Slab ** 3 to 4 Feet Above Floor

TABLE 3
CONSTITUENTS ANALYZED IN INDOOR AIR AND RISK CALCULATIONS
GATEWAY PLAZA SHOPPING CENTER - CODE NINJAS SPACE
2427 CRABTREE BOULEVARD
RALEIGH, NORTH CAROLINA
MID -ATLANTIC JOB NO. R2667.01
Sample ID
IA-CN-1
IA-CN-2
IA-CN-2-DUP
Ambient
NCDEQ DWM Residential Indoor
Air
Screening Levels
June 2021 (ug/m3)
NCDEQ DWM Non -Residential Indoor
Air
Screening Levels
June 2021 (ug/m3)
Sampling Date
9/13/2021
9/13/2021
9/13/2021
9/13/2021
Acetone
20
23
24
21
6500
27000
Benzene
0.63
0.53
0.51
0.52
0.36
1.6
Benzyl Chloride`
<0.081
<0.081
<0.081
<0.081
0.057
0.25
Bromodichloromethane`
<0.085
<0.085
<0.085
<0.085
0.076
0.33
Bromoform
<0.13
<0.13
<0.13
<0.13
2.6
11
Bromomethane
<0.11
<0.11
<0.11
<0.11
1.0
4.4
1,3-Butadiene
<0.054
<0.054
<0.054
<0.054
0.094
0.41
2-Butanone (MEK)
2.0 J
2.1 J
3.4 J
2.4 J
1000
4400
Carbon Disulfide
<0.28
<0.28
<0.28
<0.28
150
610
Carbon Tetrachloride
0.64
0.63
0.57
0.51
0.47
2.0
Chlorobenzene
<0.048
<0.048
<0.048
<0.048
10
44
Chloroethane
<0.067
<0.067
<0.067
<0.067
2100
8800
Chloroform
<0.041
0.20
0.12 J
0.20
0.12
0.53
Chloromethane
1.1
2.6
1.0
1.2
19
79
Cyclohexane
<0.079
<0.079
<0.079
<0.079
1300
5300
Dibromochloromethane
<0.100
<0.100
<0.100
<0.100
NE
NE
1,2-Dibromoethane (EDB)`
<0.075
<0.075
<0.075
<0.075
0.0047
0.02
1,2-Dichlorobenzene
<0.078
<0.078
<0.078
<0.078
42
180
1,3-Dichlorobenzene
<0.051
<0.051
<0.051
<0.051
NE
NE
1,4-Dichlorobenzene
<0.085
<0.085
<0.085
<0.085
0.26
1.1
Dichlorodifluoromethane (Freon
121
2.3
2.4
2.6
2.4
21
88
1,1-Dichloroethane
<0.047
<0.047
<0.047
<0.047
1.8
7.7
1,2-Dichloroethane
<0.052
<0.052
<0.052
<0.052
0.11
0.47
1,1-Dichloroethylene
<0.054
<0.054
<0.054
<0.054
42
180
cis-1,2-Dichloroethylene
<0.047
<0.047
<0.047
<0.047
NE
NE
trans-1.2-Dichloroethylene
<0.048
<0.048
<0.048
0.061 J
8.3
35
1,2-Dichloropropane
<0.058
<0.058
<0.058
<0.058
0.76
3.3
cis-1,3-Dichloropropene
<0.073
<0.073
<0.073
<0.073
NE
NE
trans-1,3-Dichloropropene
<0.049
<0.049
<0.049
<0.049
NE
NE
1,2-Dichloro-1,1,2,2-
tetrafluoroethane Freon 114
<0.084
<0.084
<0.084
<0.084
NE
NE
1,4-Dioxane
<0.085
<0.085
<0.085
<0.085
0.56
2.5
Ethanol
160
160
160
73
NE
NE
Ethyl Acetate
<0.75
<0.75
<0.75
6.1
15
61
Ethylbenzene
0.29
0.26
0.21
0.36
1.1
4.9
4-Ethyltoluene
<0.053
<0.053
<0.053
<0.053
NE
NE
Heptane
<0.059
-0.059
0.390
0.63
83
350
Hexachlorobutadiene`
<0.21
<0.21
<0.21
<0.21
0.13
0.56
Hexane
<0.40
0.91 J
1.1 J
<0.40
150
610
2-Hexanone(MBK)
<0.072
<0.072
<0.072
<0.072
6.3
26
Isopropanol
4.0
2.9 J
3.4
25
42
180
Methyl tert-Butyl Ether (MTBE)
<0.050
<0.050
<0.050
<0.050
11
47
Methylene Chloride
1.3
1.0 J
2.4
0.74 J
100
530
4-Methyl-2-pentanone(MIBK)
<0.073
<0.073
<0.073
<0.073
630
2600
Naphthalene
<0.12 V-35
0.27 V-35
0.19 V-35
0.24 V-35
0.083
0.36
Propene
<0.20
<0.20
<0.20
<0.20
630
2600
Styrene
0.64
0.66
0.53
0.29
210
880
1,1,2,2-Tetrachloroethane'
<0.073
<0.073
<0.073
<0.073
0.048
0.21
Tetrachloroethylene
<0.070
0.14 J
0.12 J
0.31
8.3
35
Tetrahydrofuran
<0.25
0.44 J
<0.25
<0.25
420
1800
Toluene
1.8
1.9
1.6
2.0
1000
4400
1,2,4-Trichlorobenzene
<0.18
<0.18
<0.18
<0.18
0.42
1.8
1,1,1-Trichloroethane
<0.088
<0.088
<0.088
<0.088
1000
4400
1,1,2-Trichloroethane`
<0.076
<0.076
<0.076
<0.076
0.042
0.18
Trichloroethylene
<0.069
<0.069
<0.069
<0.069
0.42
1.8
Trichlorofluoromethane (Freon 11)
1.3
1.3
1.3
1.4
NE
NE
1 ifluor richane (Freon
trifluoroethane Freon 113'
0.92 L-05, J
0.92 L-05, J
0.91 L-05, J
0.79 J, L-05
1000
4400
1,2,4-Trimethylbenzene
<0.051
0.30
<0.051
0.61
13
53
1,3,5-Trimethylbenzene
<0.047
0.099 V-06, J
<0.047
0.13 J, V-06
13
53
Vinyl Acetate
<0.23
<0.23
<0.23
<0.23
42
180
Vinyl Chloride
<0.035
<0.035
<0.035
<0.035
0.17
2.8
m&p-Xylene
0.81
0.81
0.68
1.1
21
88
o-Xylene
0.35
0.33
0.34
0.50
21
88
RESIDENTIAL RISK CALCULATIONS SUMMARY
Acceptable Carcinogenic
Sum Risk Range and Maximum Non -Cancer Hazard Index
Calculated Sample Cancer Risk
Sum
3.0E-05
NA
1.0 E-04
Calculated Sample Non-
Carcinogenic Hazard Index
6.7E-01
NA
HI=1
NON-RESIDENTIAL RISK CALCULATIONS SUMMARY
Acceptable Carcinogenic
Sum Risk Range and Maximum Non -Cancer Hazard Index
Calculated Sample Cancer Risk
Sum
7.0E-06
NA
1.0 E-04
Calculated Sample Non -
Carcinogenic Hazard Index
1.6E-01
NA
HI=1
Notes:
Concentration units; ug/m3
J = Estimated Concentration
NE = Not Established
' = Compound was not detected, but had a lab method detection limit over its Residential and/or Non -Residential IASL. For the purpose of risk evaluation, a concentration
equal to its MDL was assumed.
L-05 = Laboratory fortified blank/laboratory control sample recovery is outside of control limits. Reported value for this compound is likely to be biased
on the high side.
V-06 = Continuing calibration verification (CCV) did not meet method specifications and was biased on the high side for this compound.
V-35 = Initial calibration verification (ICV) did not meet method specifications and was biased on the high side for thiscompound. Reported result is estimated.
Bolded concentrations exceed the Residential Indoor Air Screening Level
Shaded concentrations exceed the Non -Residential Indoor Air Screening Level
<0.34 = Not detected above the lab method detection limit

TABLE 4
CONSTITUENTS ANALYZED IN SOIL GAS AND RISK CALCULATIONS
GATEWAY PLAZA SHOPPING CENTER - CODE NINJAS SPACE
2427 CRABTREE BOULEVARD
RALEIGH, NORTH CAROLINA
MID -ATLANTIC JOB NO. R2667.01
Sample ID
SS-CN-1
SS-CN-2
SS-CN-2-DUP
NCDEQ DWM Residential Soil
Gas
Screening Levels
June 2021 (ug/m3)
NCDEQ DWM Non -Residential Soil
Gas
Screening Levels
June 2021 (ug/m3)
Sampling Date
9/14/2021
9/14/2021
9/14/2021
Acetone
7900
580
420
220000
2700000
Benzene
<0.15
<0.15
<0.15
12
160
Benzyl Chloride
<0.47
<0.47
<0.47
1.9
25
Bromodichloromethane
<0.49
<0.49
<0.49
2.5
33
Bromoform
<0.74
<0.74
<0.74
85
1100
Bromomethane
<0.63
<0.63
<0.63
35
440
1,3-Butadiene
<0.31
<0.31
<0.31
3.1
41
2-Butanone (MEK)
16 J
45
35
35000
440000
Carbon Disulfide
<1.6
<1.6
<1.6
4900
61000
Carbon Tetrachloride
<0.38
0.43 J
0.40 J
16
200
Chlorobenzene
<0.27
<0.27
<0.27
350
4400
Chloroethane
<0.39
<0.39
<0.39
70000
880000
Chloroform
<0.24
0.76 J
0.74 J
4.1
53
Chloromethane
<0.17
<0.17
<0.17
630
7900
Cyclohexane
<0.46
<0.46
<0.46
42000
530000
Dibromochloromethane
<0.57
<0.57
<0.57
NE
NE
1,2-Dibromoethane (EDB)`
<0.43
<0.43
<0.43
0.16
2.0
1,2-Dichlorobenzene
<0.44
<0.44
<0.44
1400
18000
1,3-Dichlorobenzene
<0.29
<0.29
<0.29
NE
NE
1,4-Dichlorobenzene
<0.49
<0.49
<0.49
8.5
110
Dichlorodifluoromethane (Freon
12)
<0.30
2.7
2.1
700
8800
1,1-Dichloroethane
<0.27
<0.27
<0.27
58
770
1,2-Dichloroethane
<0.30
<0.30
<0.30
3.6
47
1,1-Dichloroethylene
<0.31
<0.31
<0.31
1400
18000
cis-1,2-Dichloroethylene
<0.27
<0.27
<0.27
NE
NE
trans-1.2-Dichloroethylene
<0.28
<0.28
<0.28
280
3500
1,2-Dichloropropane
<0.33
<0.33
<0.33
25
330
cis-1,3-Dichloropropene
<0.42
<0.42
<0.42
23
310
trans-1,3-Dichloropropene
<0.28
<0.28
<0.28
23
310
1,2-Dichloro-1,1,2,2-
tetrafluoroethane Freon 114
<0.48
<0.48
<0.48
NE
NE
1,4-Dioxane
3.8 J
5.7 J
5.1 J
19
250
Ethanol
640
2700
2500
NE
NE
Ethyl Acetate
4.3 L-03, V-3
<4.3 L-03, V-3
<4.3 L-03, V-34
490
6100
Ethylbenzene
0.54 J
0.33 J
0.28 J
37
490
4-Ethyltoluene
<0.30
<0.30
<0.30
NE
NE
Heptane
<0.34
<0.34
<0.34
2800
35000
Hexachlorobutadiene
<1.2 V-05
<1.2 V-05
<1.2 V-05
4.3
56
Hexane
<2.3
<2.3
<2.3
4900
61000
2-Hexanone(MBK)
<0.41
<0.41
<0.41
210
2600
Isopropanol
470
79
69
1400
18000
Methyl tert-Butyl Ether (MTBE)
<0.29
<0.29
<0.29
360
4700
Methylene Chloride
2.4 J
2.5 J
3.1 J
3400
53000
4-Methyl-2-pentanone(MIBK)
<0.42
<0.42
2.4
21000
260000
Naphthalene
<0.66
<0.66
0.67 J
2.8
36
Propene
<1.2
<1.2
<1.2
21000
260000
Styrene
0.43 J
<0.27
0.46 J
7000
88000
1,1,2,2-Tetrachloroethane
<0.42
<0.42
<0.42
1.6
21
Tetrachloroethylene
0.43 J
<0.40
0.52 J
280
3500
Tetrahydrofuran
<1.5
31
25
14000
180000
Toluene
1.5
1.1
0.98
35000
440000
1,2,4-Trichlorobenzene
<1.0 V-04
<1.0 V-04
<1.0 V-04
14
180
1,1,1-Trichloroethane
<0.50
<0.50
<0.50
35000
440000
1,1,2-Trichloroethane
<0.43
<0.43
<0.43
1.4
18
Trichloroethylene
<0.40
0.41 J
<0.40
14
180
Trichlorofluoromethane (Freon
11)
2.0 J
5.9
5.9
NE
NE
1,1,2-Trichloro-1,2,2-
trifluoroethane Freon 113
1.0 J
0.71 J
0.89 J
35000
440000
1,2,4-Trimethylbenzene
0.81 J
<0.29
<0.29
420
5300
1,3,5-Trimethylbenzene
0.28 J
<0.27
<0.27
420
5300
Vinyl Acetate
<1.3
<1.3
<1.3
1400
18000
Vinyl Chloride
<0.20
<0.20
<0.20
5.6
280
m&p-Xylene
1.7 J
0.92 J
0.92 J
700
8800
o-Xylene
0.76 J
0.45 J
0.43 J
700
8800
RESIDENTIAL RISK CALCULATIONS SUMMARY
Acceptable Carcinogenic
Sum Risk Range and Maximum Non -Cancer Hazard Index
Calculated Sample Cancer Risk
Sum
3.6E-06
1.0 E-04
Calculated Sample Non-
Carcinogenic Hazard Index
9.8E-02
HI=1
NON-RESIDENTIAL RISK CALCULATIONS SUMMARY
Acceptable Carcinogenic
Sum Risk Range and Maximum Non -Cancer Hazard Index
Calculated Sample Cancer Risk
Sum
2.7E-07
1.0 E-04
Calculated Sample Non-
Carcino enic Hazard Index
7,8E-03
HI=1
Notes:
Concentration units; ug/m3
J = Estimated Concentration
NE = Not Established
* = Compound was not detected, but had a lab method detection limit over the Residential SGSL. For the purpose of risk evaluation, concentrations of
compound equal to its MDL were assumed.
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
V-04 = Initial calibration did not meet method specifications. Compound was calibrated using a response factor where % RSD is outside of method
specified criteria.
V-05 = Continuing calibration verification (CCV) did not meet method specifications and was biased on the low side for
this compound.
V-34 = Initial calibration verification (ICV) did not meet method specifications and was biased on the low side for this
compound. Reported result is estimated.
Bolded concentrations exceed the Residential Soil Gas Screening Level
<0.34 = Not detected above the lab method detection limit
m = Manual integration by laboratory personnel

APPENDIX A
VAPOR INTRUSION ASSESSMENT WORK PLAN & REPORT
CHECKLIST
0 Mid Atlantic

PRELIMINARY NCDEQ BROWNFIELDS PROGRAM GUIDANCE
Vapor Intrusion Assessment Work Plan & Report Checklist
NCDEQ Brownfields Program
July 2021
This guidance is to be used for Brownfields Properties to evaluate vapor intrusion concerns.
Vapor intrusion (VI) assessment work plans and reports for NC Brownfields properties must use
this checklist. The completed checklist must be provided with each of the submitted work plan
and subsequent report documents and confirm the following:
• The type of information detailed below has been included; and
• The format and tables provided below were used to complete the work plan.
The benefits of following this checklist include:
• Consistency and predictability in the assessment process;
• The most efficient process for preparing and reviewing work plans and reports
prepared for Brownfields properties;
• Maximize usability of the data by the NC Brownfields Program;
• Minimize DEQ review time; and
• Reduce costs and delays associated with additional mobilizations.
Assessment that is conducted without approval from the NC Brownfields Program is done at
your own risk and may not be accepted by the Brownfields Program. The Program will be using
this checklist to conduct its reviews.
The VI assessment work plan and report must be signed and sealed by a NC licensed geologist or
engineer.
Plan to allow sufficient review time for Work Plans and Reports. The Program is in high
demand and your Brownfields Project Manager is managing multiple projects. The DEQ
Brownfields Program has a vested interest in keeping all of our projects on schedule, including
yours. To help, you should maintain close coordination and consultation with your Brownfields
Project Manager (whether it's with the Brownfields agreement development staff or with the
Property Management Unit staff afterwards) to determine an approximate time range for review
and allow for that in planning your project schedule. The Prospective Developer, their technical,
and legal team shall coordinate to ensure the validity of collected data which forms the basis for
environmental risk decision making regarding vapor intrusion potential and mitigation measures
at the Brownfields Property.
Note: Work plans that follow this checklist outline can be submitted either as a standalone
document or as part of a work plan that encompasses other assessment activities (i.e. soil,
groundwater, etc.) required by the Brownfields Program.
VIMS Assessment Checklist Version 1, July 2021

Title Page
The title page should include the following information.
❑■ Title of work plan or report
0 Brownfields Project Name (not the development name)
❑■ Brownfields Project Number
0 Date (updated with each revision)
❑■ Revision Number
0 Firm PE/PG License Number
❑■ Individual PE/PG seal & signature
❑■ Contact information for Developer, Consultant, and Project Manager (or BPMU Staff)
Section 1— Introduction
Provide a BRIEF summary of the history of the property that contains the following:
❑■ History in the Brownfields Program or involvement by another DEQ Section such as
DSCA
❑■ Provide a chronology of former and/or current uses
0 List potential sources of vapor intrusion (e.g. off -site migration of contaminants, on -site
releases, chlorinated solvent use, especially the presence or suspected presence of
trichloroethylene (TCE), groundwater contamination, and preferential pathways such as
utility corridors
0 List RECs from a Phase I ESA and their location on the Brownfields Property
❑■ Provide a conceptual site model for the Brownfields Property on which to base the data
gap evaluation
❑■ Indicate if the scope of work was negotiated during a Brownfields Data Gap Meeting, etc.
Provide a summary of the redevelopment plans for the Brownfields Property that contains the
following:
0 Type of proposed use (townhomes, apartments, mixed -use, retail, etc.)
❑■ Demolition, new construction and foundation type
9 Re -use of existing structures
❑■ Presence of elevators & stairwells
IN How the new building configuration/parking areas relate to the location, if known, of
contamination at the Brownfields Property
IN Proposed and existing building/unit square footage to be assessed.
❑■ Indicate that the proposed use has been approved or is under evaluation by the
Brownfields Program at the time of submittal.
❑■ Include a discussion of the following and reference each appendix or attachment where
located:
❑■ Figure 1 - Site location map on USGS topographic map, north arrow,
graphic scale, site outline
❑ Figure 2 — see format requirements in Section 8 below - Site redevelopment
plans superimposed on a high -quality aerial photograph of the site
VIMS Assessment Checklist Version 1, July 2021

B Table 1 — see example Tables in Section 8 below: With property identifying
information in a summary table format: Brownfield Project Number, Parcel
Number(s), address, site acreage, former or current use, & proposed use
Section 2 — Scope of Work
N Provide a general description of proposed scope of work covered in this plan (e.g., 5
soil gas sampling points, 6 sub -slab points, 4 indoor air, 1 ambient air); Note for any
Brownfields Property, baseline data for each applicable environmental medium as
determined by DEQ is required.
N Discuss samples to be collected by media and source area/location. Generally, the
reasoning for the sample locations selected.
N Include a discussion of the following and reference each appendix or attachment
where located:
❑■ Table 2 — see example Tables in Section 8 below - Briefly list and describe
the vapor intrusion data gaps the assessment is attempting to fill and note other
pertinent information in a sampling summary, including background and
QA/QC samples.
❑■ Figure 3 — see format requirements in Section 8 below - Proposed Sample
Location Map - Provide a figure in the work plan noting the location of each of
the proposed soil gas, sub -slab, or indoor air samples overlain with planned
building layouts, historical areas of concern, and previously identified impacts.
Note that DEQ DWM VI Guidance states that "Due to spatial variability in sub -slab soil gas
concentrations over a slab, DWM generally recommends the collection of one sample per 1,000
square feet of first floor building area." Sampling density could vary due to site -specific
considerations, and with prior approval from DEQ.
Section 3 — Sampling Methodolou
For all air sampling planned, provide the following information in relevant section 3.a or 3.b
discussed below:
N Reference the most current versions of DEQ DWM and ITRC guidance documents
applicable to vapor intrusion sampling, and any other applicable standard operating
procedures. Note any deviations or methodology planned that is not covered by such
guidance.
N Discuss timing of sampling and whether indoor air and sub -slab sampling will be
occurring contemporaneously; if so plan to conduct indoor air sampling first so that the
creation of the sub -slab point does not influence the indoor air data.
❑■ State the analytes for which each sample will be analyzed for (briefly) and include the
analytes that are specifically being requested for reporting. Reference Table 2.
0 Indicate if mercury has previously been assessed for/detected in soil or groundwater
and whether mercury vapor intrusion concerns are present.
* Discuss how and when vacuum readings will be collected (for Summa canisters) —
field vacuum readings should be recorded on the chain of custody forms for ease in
comparing to reported laboratory receipt vacuum readings.
VIMS Assessment Checklist Version 1, July 2021

Note: Per DEQ DWM VI Guidance, Summa canisters that have lost greater than 10% of the
initial recorded lab vacuum when received in the field will not be used for sampling. It is
assumed that Summa canisters are issued with a maximum achievable pressure of 30" Hg. If
canisters are received in the field with less than 27" Hg, initial lab pressure measurements should
be documented to confirm less than a 10% volume loss or a replacement summa canister
obtained. Otherwise, sample results may be rejected.
0 Provide the sample collection time duration for all samples.
❑■ State how duplicate sample(s) will be collected.
0 Indicate a targeted final vacuum reading of at least -5" Hg. Note if the vacuum
measurement is less than this, sample acceptance will be in jeopardy and DEQ
Brownfields may request a resample.
0 Include planned flow rate for Summa canister sampling or time allotting for passive
samplers.
Note: Per DEQ DWM VI Guidance, the maximum allowable flow rate is 200 mL/min.
Section 3.a. Exterior Soil gas / Sub -Slab Sampling
0 Describe depths of samples to be collected (Reference example Table 2 in Section 8
below) or how that decision will be made in the field, if needed. Refer to DEQ DWM
Vapor Intrusion Guidance for reference to minimum depths of samples.
❑■ Locate sub -slab samples in areas of the slab that are near known or potential sources of
volatile contaminants and in areas that could encourage vapor migration, such as sub -
grade trenches, pits, and elevator shafts, but position them at least 5 feet from exterior
walls or cracks/penetrations.
❑■ Locate sub -slab samples across the building(s) being assessed being mindful of any
building features that could indicate the presence of sub -walls or footers that would
restrict sub -slab vapor flow.
0 Describe installation methodology construction details of the sub -slab and/or soil
vapor samples, including filter pack and sealants. Use of new and dedicated tubing is
required.
0 Discuss sample collection procedures. Include the following, at a minimum:
❑■ Equipment to be used (Summa canisters & size, type of tubing, vapor pins,
etc.)
0 Indicate if sub-slab/exterior soil gas sample points will be permanent or
temporary.
0 Whether Summa canisters are batch- or individually -certified.
❑■ Discuss stabilization time of the sampling points prior to sampling.
Note: Inadequate stabilization times have been known to impact sample results through the
inadvertent collection of vapors off -gassing from soil gas/sub slab installation materials,
potentially creating false positive results that would then require a resampling event.
Recommended stabilization times are outlined below:
VIMS Assessment Checklist Version 1, July 2021

a. Sub -slab with minimally invasive points (e.g. Vapor Pins): Manufacturer's
guidelines generally suggest 20 minutes may be sufficient with an airtight cap
installed;
b. Sub -slab points (other than minimally invasive points): at least 24-48 hours
(to be purged at installation and at time of sampling with an air -tight cap in
place in the interim); or
c. Exterior soil gas points: 48 hours to allow materials used during installation
to off -gas prior to sampling (to be purged at installation and at time of sampling
with an air -tight cap in place in the interim).
0 Describe purging methods and volumes — must take into account not only the volume
of the tubing but also of the annulus. Stagnant air inside soil gas probes and sampling
trains must be purged prior to sample collection. Three to four system purge volumes are
recommended as a minimum value. The investigator should use a low purge rate with a
maximum of 200 mL/min.
❑■ Describe leak check procedures for sub -slab and soil gas samples. Note: helium check
of entire sample train is required; a shut-in test is also recommended as a best
management practice.
0 Describe how the helium meter will be connected to the sampling train. Note that
directly connecting the helium meter to the sampling train without a backflow preventer
is not allowed.
❑■ Record the type of material found under the slab or in the soil gas borings.
0 Record slab thickness for sub -slab samples and provide soil boring logs for soil gas
samples.
0 Discuss sample point abandonment and/or securement (if permanent points)
Note: Exterior soil -gas sampling may not necessarily be indicative of site conditions following
redevelopment efforts and confirmation sub -slab sampling may be necessary following
construction to confirm that a potential vapor intrusion pathway is not present.
Section 3.b. Indoor Air / Crawl Space Sampling
❑■ Include a chemical survey of any potential interference compounds stored or used
inside the building (Refer to example Indoor Air Building Survey and Sampling Form
that will be completed for each distinct area of the Brownfields Property under
assessment. The Indoor Air Form is included within the DEQ DWM VI Guidance).
0 Describe steps to remove any potential interference compounds from the sampling
area sufficiently ahead of the sampling event (The DEQ DWM VI Guidance recommends
removal within 24-72 hours and typically within 48 hours of sampling as indicated on the
Indoor Air Building Survey and Sampling Form).
N Schedule sampling to minimize any potential for interference from compounds used
during construction or finishing of new buildings, etc. Describe any sampling
constraints.
0 Describe building conditions (including HVAC conditions) that will exist within 24
hours prior to and during the sampling.
0 Discuss sample collection procedures. Include the following, at a minimum:
VIMS Assessment Checklist Version 1, July 2021

0 Equipment to be used (passive samplers, Summa canisters & size, etc.)
❑■ Placement height of Summa canisters or passive samplers for indoor air and
ambient air collection to account for site specific breathing zone height of
anticipated occupants.
� Description of the indoor air summa canisters or passive samplers proposed
placement location including use of space (e.g., ground floor garage, first floor
living space, office, mechanical equipment room, etc.).
0 Methods implemented to reduce or eliminate access to building where indoor
air sampling is occurring
❑■ Whether Summa canisters are batch- or individually -certified. Note: per
DEQ DWM VI Guidance, indoor air samples should utilize individually
certified Summa canisters
❑ Provide how often and when exterior ambient air samples will be collected (typically,
one sample per day per sampling event)
❑ If crawl space samples are proposed, include details on:
❑ Presence of moisture/VI barrier
❑ Ceiling structure of crawlspace
❑ Exterior openings or ventilation features
❑ Height across entire footprint of crawl space
❑ Walls/vertical structures separating crawl space areas
❑ Additional pertinent details of crawl space construction
Section 4 — Laboratory Analyses
❑ Include the proposed analyte list and EPA Method numbers prepared in consultation
with your DEQ Brownfields Project Manager;
0 Minimum analytical requirements are described as outlined below:
a. Full TO-15 list is required initially for soil gas, sub -slab, and indoor air analyses.
b. Subsequent modifications of the analyte list, e.g., once sub -slab gas results are
known, may be made with advance approval from your Brownfields Project
Manager.
Note: Not all laboratories use the same standard analyte list. Ensure that naphthalene is
included. but exclude acrolein unless it is a suspected site contaminant. Because of the
extremely limited analyte list for the TO-15 SIM method, discuss its use with your DEQ
Brownfields Project Manager prior to implementation. When approved for use, this method
should be used for both sub -slab and indoor air samples for comparison purposes.
❑ Discuss any proposed limitations on the contaminants of concern, if any, and the
reason for such. limitation (sufficient previous data, indoor air interferences, etc.).
0 Discuss laboratory certifications. Please note, NC does not certify laboratories for air
samples. Please specify what certification the proposed air laboratory holds.
0 Indicate the Reporting Limits/Method Detection Limits will meet applicable screening
criteria (to the extent feasible). Include reporting of J-flags to meet criteria.
VIMS Assessment Checklist Version 1, July 2021

0 Indicate what Level QA/QC will be reported by the laboratory. Level II QA/QC is
typically acceptable.
Section 5 — QA/QC
0 Specify the duplicate sample frequency. Minimum requirement: 1 duplicate per 20
samples, per media, per method, per day of sampling.
0 Discuss chain of custody and shipping.
Section 6 — Investigation Derived Waste (IDW) Management
❑ Discuss what IDW will be generated and how it is proposed to be managed.
Management recommendations should be in accordance with 15A NCAC 02T.1503 and
15A NCAC 02H. 0106. Generally, if the Brownfields Property has not previously been
assessed, all IDW must be containerized and characterized prior to management.
Previous assessment data that indicate no Hazardous Waste (listed or characteristic) is
likely to be encountered in the area of proposed assessment will be required before thin
spreading of IDW on -site is permitted.
Section 7 — Reporting
This section should discuss the components of the assessment report which will be prepared as a
result of the implementation of the work plan. At a minimum, the report shall include:
0 Reporting/summary of site work conducted for all sections outlined above in this
checklist;
0 Summary of findings and possible recommendations;
❑■ All applicable tables and figures outlined below with the addition of:
0 Tables for tabulated analytical data per media sampled and analyzed, compared against
applicable screening levels; any non -detectable levels should be reported as less than the
applicable reporting limit noting any reporting limits that exceed the respective screening
level.
0 Figure(s) depicting actual sample locations, with the results for each media depicted,
graphic scale and north arrow. Modify the figures as appropriate in the report if there was
variance with these locations during the sampling event;
❑■ Detail on building additions, slab types and sub -grade features such as the locations of
crawl spaces, tunnels, basements, sub -grade walls, and footer walls encountered during
assessment.
0 Firm PE/PG License Number; and
❑■ Individual PE/PG seal & signature
VIMS Assessment Checklist Version 1, July 2021

Section 8 — Example Tables and Format for Figures
0 Table 1 — Property Summary
Table 1: Property Summary
BF Project No.
Parcel
No.
Address
Site
Acreage
Former/
r nt
Current
e
REC
Proposed
Use
0 Table 2 — Sampling Summary
Table 2: Sampling Summar
Data
Parcel/Bldg
Sampling
Type
Number
Depth
Analytical
Detection
range for
Gap
No.
Objective
of
Sample
of
Samples
of
Samples
Program
TCE (if
applicable)
9 Figure 1— Site Location Map (topographic map base) with north arrow, graphic scale, and
site outline.
❑ Figure 2 — Proposed Redevelopment to include the following details:
❑ All current and proposed structures
❑ Brownfields Property Boundary
❑ Which structures will be removed/renovated
❑ Proposed future use of each building
N Figure 3 - Proposed Sample Location Map (work plan) or Sample Location Map to include
the following details:
N High quality aerial and/or floor plan base (interior samples)
0 Overlain planned or existing (to remain) building layout
❑■ North arrow
N Graphic scale
❑ Historical sample locations (if applicable)
N RECs or other areas of concern
9 Proposed sample locations for each medium proposed for sampling
N Sample identification labels
❑ Appendix — Tabular Summary of Historical Analytical Data
VIMS Assessment Checklist Version 1, July 2021

APPENDIX B
INDOOR AIR SURVEY
0 Mid Atlantic

INDOOR AIR BUILDING SURVEY
and SAMPLING FORM
Site Name: �rn
ID#: �� �1J
Preparer's name:Date: "1
Preparer's affiliation: 1i�} Aw')"Z. Phone #: %UH 60c( OZ "s
Part I - Occupants
Building Address: 2 7c
Property Contact:
Contact's Phone: home ( ) �✓ work
# of Building occupants: Children under age 13 _
Part II — Building Characteristics
126
Owner / Renter / other:y�-
) , 1GrL�-r' cell
Children age 13-18 Adults '2
Building type: residential / multi -family residential / office / rip mall commercial / industrial
Describe building: �r'� / a` (( �``� 4� O '' Year constructed: ('AYnuj1
Sensitive population: day care / nursing home / hospital scho / other (specify):
Number of floors below grade: 0 (full basement / crawl space / slab on grade)
Number of floors at or above grade:
Depth of basement below grade surface: ft. Basement size: ftZ
Basement floor construction: concrete / dirt / floating / stone / other (specify):
Foundation walls: poured concrete cinder blocks / stone / other (specify)
Basement sump present? Yes / o Sump pump? Yes / No Water in sump? Yes / No
Type of heating system (circle all that apply):
of air circulation hot air radiation wood steam radiation
heat pump hot water radiation kerosene heater electric baseboard
other (specify):
)1l4
Type of v tilation system (circle all that apply):
central air conditioning mechanical fans bathroom ventilation fans
ng units kitchen range hood fan outside air intake
other (specify):
Type of fuel utilized (circle all that apply):
Natural gas /electric fuel oil / wood / coal / solar / kerosene
Are the basement walls or floor sealed with waterproof paint or epoxy coatings? Yes No

X
x
to
x
X
X
Is there a whole house fan? Yes / 0
Septic system? Yes / Yes (but not used) /(9
Irrigation/private well? Yes / Yes (but not used) /U
Type of ground cover outside of building: oncrete gra / as ha other (specify)
Existing subsurface depressurization (radon) system in place? Yes /V active /passive
Sub -slab vapor/moisture barrier in place? Ye / No
Type of barrier: 6 .—A; / Plas�-:L
Part III - Outside Contaminant Sources
Other stationary sources nearby (gas stations, emission stacks, etc.): XJ04-- p 6_ce -,,�
Heavy vehicular traffic nearby (or other mobile sources): Pcrg A!] 64 {,-CG AW
Part IV — Indoor Contaminant Sources
Identify all potential indoor sources found in the building (including attached garages) and crawlspace (if
present), the location of the source (floor and room), and whether the item was removed from the building
48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items
should be completed at least 24 hours prior to the commencement of the indoor air sampling event.
Potential Sources
Location(s)
Removed
(Yes / No / NA)
Gasoline storage cans
Gas -powered equipment
Kerosene storage cans
Paints / thinners / strippers
Cleaning solvents
Oven cleaners
Carpet / upholstery cleaners
Other house cleaning products
Moth balls
Polishes / waxes
Insecticides
Furniture / floor polish
Nail polish / polish remover
Hairspray
},a.sa �r
Cologne / perfume
Air fresheners
�. -4 0, r
v
Fuel tank (inside building)
NA
Wood stove or fireplace
NA
New furniture / upholstery
Et 7
o
New carpeting / flooring
NA
Hobbies - glues, paints, etc.

Part V — Miscellaneous Items
Do any occupants of the building smoke? Yes /( Ad How often? --- 41/�
Last time someone smoked in the building? — hours / days ago
Does the building have an attached garage directly connected to living space? Yes /
If so, is a car usually parked in the garage? Yes / No
Are gas -powered equipment or cans of gasoline/fuels stored in the garage? Yes / No
Do the occupants of the building have their clothes dry cleaned? Yes / oNo
If yes, how often? weekly / monthly / 3-4 times a year
Do any of the occupants use solvents in work? Yes / 0
If yes, what types of solvents are used? /G
If yes, are their clothes washed at work? Yes / No
Have any pesticides/herbicides been applied around the building or in the yard? Yes / No
If so, when and which chemicals? L),4 i• o+��t
Has there ever been a fire in the building? No If yes, when? ly
Has painting or staining been done in the building in the last 6 months? Os/ No
If yes, when 4^ f%W/M oc�i �Z� and where? U Ci�,���
Part VI — Sampling Information
Sample Technician: reylL Phone number:
Sample Source: Indoor Air Crawlspace Air / Sub -Slab / Near Slab Soil Gas / Exterior Soil Gas
Sampler Type: Tedlar bag / Sorbent / Stainless Steel Canister Other (specify):
Analytical Method• TO-1 / TO-17 / other: Cert. Laboratory
Sample locations (floor, room): S e 0 /" 7a A'
C6n —!CZ_TT
Field ID # - Field ID # - ®`
Field ID # - �� Field ID # -
Were "Instructions for Occupants" followed? Yes /No
If not, describe modifications:

Provide Drawing of Sample Location(s) in Building
Part VII - Meteorological Conditions
Was there significant precipitation within 12 hours prior to (or during) the sampling event? Yes /0
Describe the general weather conditions: S✓nn��, 70,5 —8 os 7 E
Part VIII — General Observations
Provide any information that may be pertinent to the sampling event and may assist in the data
interpretation process (e.g., observed that drycleaner operated with door or windows propped open for
ventilation).
Ca-)S�st��`��r
(Adapted from the NJDEP Vapor Intrusion Guidance, October 2005)

APPENDIX C
LABORATORY ANALYTICAL REPORT
AND CHAIN -OF -CUSTODY RECORD FOR
SUB -SLAB SOIL GAS AND INDOOR/AMBIENT AIR SAMPLES
0 Mid Atlantic

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
September 27, 2021
Kevin Clay
Mid -Atlantic Associates, Inc. - Raleigh, NC
409 Rogers View Court
Raleigh, NC 27610
Project Location: Raleigh, NC
Client Job Number:
Project Number: R2667.01
Laboratory Work Order Number: 21I0796
Enclosed are results of analyses for samples received by the laboratory on September 15, 2021. If you have any questions
concerning this report, please feel free to contact me.
Sincerely,
Kerry K. McGee
Project Manager
QA Officer
Katherine Allen
Laboratory Manager
Daren Damboragian
Page 1 of 26

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
Mid -Atlantic Associates, Inc. - Raleigh, NC REPORT DATE: 9/27/2021
409 Rogers View Court
Raleigh, NC 27610 PURCHASE ORDER NUMBER:
ATTN: Kevin Clay
PROJECT NUMBER: R2667.01
ANALYTICAL SUMMARY
WORK ORDER NUMBER: 21I0796
The results of analyses performed on the following samples submitted to Con -Test, a Pace Analytical Laboratory, are found in this report.
PROJECT LOCATION: Raleigh, NC
FIELD SAMPLE # LAB ID: MATRIX SAMPLE DESCRIPTION TEST SUB LAB
SS-CN-I 21I0796-01 Soil Gas EPATO-15
SS-CN-2 21I0796-02 Soil Gas EPATO-15
SS-CN-2-DUP 21I0796-03 Soil Gas 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.
Page 3 of 26

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
EPA TO-15
Qualifications:
Reported result is estimated. Value reported over verified calibration range.
Analyte & Samples(s) Qualified:
Acetone, Ethanol
B290914-DUP1
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:
Ethyl Acetate
21I0796-01[SS-CN-1], 21I0796-02[SS-CN-2], 21I0796-03[SS-CN-2-DUP], B290914-BLKI, B290914-BSI, B290914-DUP1
Duplicate relative percent difference (RPD) is a less useful indicator of sample precision for sample results that are <5 times the reporting
limit (RL).
Analyte & Samples(s) Qualified:
Trichloroethylene
B290914-DUP 1
Initial calibration did not meet method specifications. Compound was calibrated using a response factor where %RSD is outside of method
specified criteria. Reported result is estimated.
Analyte & Samples(s) Qualified:
1,2,4-Trichlorobenzene
21I0796-01[SS-CN-1], 21I0796-02[SS-CN-2], 21I0796-03[SS-CN-2-DUP], B290914-BLK1, B290914-BSI, B290914-DUP1
Continuing calibration verification (CCV) did not meet method specifications and was biased on the low side for this compound.
Analyte & Samples(s) Qualified:
Hexachlorobutadiene
21I0796-01[SS-CN-1], 21I0796-02[SS-CN-2], 21I0796-03[SS-CN-2-DUP], B290914-BLK1, B290914-BS1, B290914-DUP1
Initial calibration verification (ICV) did not meet method specifications and was biased on the low side for this compound. Reported result is
estimated.
Analyte & Samples(s) Qualified:
Ethyl Acetate
21I0796-01[SS-CN-1], 21I0796-02[SS-CN-2], 21I0796-03[SS-CN-2-DUP], B290914-BLKI, B290914-BS1, B290914-DUP1
Initial calibration verification (ICV) did not meet method specifications and was biased on the high side. Data validation is not affected since
sample result was 'hot detected" for this compound.
Analyte & Samples(s) Qualified:
Vinyl Acetate
B290914-BSI
Page 4 of 26

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
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 5 of 26

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Raleigh, NC
Date Received: 9/15/2021
Field Sample #: SS-CN-1
Sample ID: 21I0796-01
Sample Matrix: Soil Gas
Sampled: 9/14/2021 12:23
Sample Description/Location:
Sub Description/Location:
Canister ID: 2347
Canister Size: 1 liter
Flow Controller ID: 4253
Sample Type: 10 min
Work Order: 2110796
Initial Vacuum(in Hg): -30
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -5.9
Flow Controller Type: Fixed -Orifice
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv
ug/m3
Date/Time
Analyte
Results
RL
MDL
Flag/Qual
Results
RI
MDL
Dilution
Analyzed
Analyst
Acetone
3300
600
360
7900
1400
860
300
9/24/21 7:35
BRF
Benzene
ND
0.20
0.048
ND
0.64
0.15
4
9/23/21 21:12
BRF
Benzyl chloride
ND
0.20
0.090
ND
1.0
0.47
4
9/23/21 21:12
BRF
Bromodichloromethane
ND
0.20
0.073
ND
1.3
0.49
4
9/23/21 21:12
BRF
Bromoform
ND
0.20
0.072
ND
2.1
0.74
4
9/23/21 21:12
BRF
Bromomethane
ND
0.20
0.16
ND
0.78
0.63
4
9/23/21 21:12
BRF
1,3-Butadiene
ND
0.20
0.14
ND
0.44
0.31
4
9/23/21 21:12
BRF
2-Butanone (MEK)
5.5
8.0
0.66
J
16
24
2.0
4
9/23/21 21:12
BRF
Carbon Disulfide
ND
2.0
0.51
ND
6.2
1.6
4
9/23/21 21:12
BRF
Carbon Tetrachloride
ND
0.20
0.060
ND
1.3
0.38
4
9/23/21 21:12
BRF
Chlorobenzene
ND
0.20
0.060
ND
0.92
0.27
4
9/23/21 21:12
BRF
Chloroethane
ND
0.20
0.15
ND
0.53
0.39
4
9/23/21 21:12
BRF
Chloroform
ND
0.20
0.048
ND
0.98
0.24
4
9/23/21 21:12
BRF
Chloromethane
ND
0.40
0.082
ND
0.83
0.17
4
9/23/21 21:12
BRF
Cyclohexane
ND
0.20
0.13
ND
0.69
0.46
4
9/23/21 21:12
BRF
Dibromochloromethane
ND
0.20
0.067
ND
1.7
0.57
4
9/23/21 21:12
BRF
1,2-Dibromoethane (EDB)
ND
0.20
0.056
ND
1.5
0.43
4
9/23/21 21:12
BRF
1,2-Dichlorobenzene
ND
0.20
0.074
ND
1.2
0.44
4
9/23/21 21:12
BRF
1,3-Dichlorobenzene
ND
0.20
0.048
ND
1.2
0.29
4
9/23/21 21:12
BRF
1,4-Dichlorobenzene
ND
0.20
0.081
ND
1.2
0.49
4
9/23/21 21:12
BRF
Dichlorodifluoromethane (Freon 12)
ND
0.20
0.061
ND
0.99
0.30
4
9/23/21 21:12
BRF
1, 1 -Dichloroethane
ND
0.20
0.067
ND
0.81
0.27
4
9/23/21 21:12
BRF
1,2-Dichloroethane
ND
0.20
0.073
ND
0.81
0.30
4
9/23/21 21:12
BRF
1, 1 -Dichloroethylene
ND
0.20
0.079
ND
0.79
0.31
4
9/23/21 21:12
BRF
cis-1,2-Dichloroethylene
ND
0.20
0.068
ND
0.79
0.27
4
9/23/21 21:12
BRF
trans-1,2-Dichloroethylene
ND
0.20
0.070
ND
0.79
0.28
4
9/23/21 21:12
BRF
1,2-Dichloropropane
ND
0.20
0.072
ND
0.92
0.33
4
9/23/21 21:12
BRF
cis- 1,3 -Dichloropropene
ND
0.20
0.093
ND
0.91
0.42
4
9/23/21 21:12
BRF
trans- 1, 3 -Dichloropropene
ND
0.20
0.062
ND
0.91
0.28
4
9/23/21 21:12
BRF
1,2-Dichloro- 1, 1,2,2-tetrafluoroethane (Freon 114)
ND
0.20
0.069
ND
1.4
0.48
4
9/23/21 21:12
BRF
1,4-Dioxane
1.1
2.0
0.14
J
3.8
7.2
0.49
4
9/23/21 21:12
BRF
Ethanol
340
60
18
640
110
34
30
9/23/21 21:37
BRF
Ethyl Acetate
ND
2.0
1.2
L-03, V-34
ND
7.2
4.3
4
9/23/21 21:12
BRF
Ethylbenzene
0.12
0.20
0.052
J
0.54
0.87
0.22
4
9/23/21 21:12
BRF
4-Ethyltoluene
ND
0.20
0.062
ND
0.98
0.30
4
9/23/21 21:12
BRF
Heptane
ND
0.20
0.082
ND
0.82
0.34
4
9/23/21 21:12
BRF
Hexachlorobutadiene
ND
0.20
0.11
V-05
ND
2.1
1.2
4
9/23/21 21:12
BRF
Hexane
ND
8.0
0.66
ND
28
2.3
4
9/23/21 21:12
BRF
2-Hexanone (MBK)
ND
0.40
0.10
ND
1.6
0.41
4
9/23/21 21:12
BRF
Isopropanol
190
8.0
1.8
470
20
4.5
4
9/23/21 21:12
BRF
Methyl tert-Butyl Ether (MTBE)
ND
0.20
0.080
ND
0.72
0.29
4
9/23/21 21:12
BRF
Methylene Chloride
0.68
2.0
0.46
J
2.4
6.9
1.6
4
9/23/21 21:12
BRF
4-Methyl-2-pentanone (MIBK)
ND
0.20
0.10
ND
0.82
0.42
4
9/23/21 21:12
BRF
Naphthalene
ND
0.20
0.13
ND
1.0
0.66
4
9/23/21 21:12
BRF
Propene
ND
8.0
0.67
ND
14
1.2
4
9/23/21 21:12
BRF
Styrene
0.10
0.20
0.063
J
0.43
0.85
0.27
4
9/23/21 21:12
BRF
1,1,2,2-Tetrachloroethane
ND
0.20
0.061
ND
1.4
0.42
4
9/23/21 21:12
BRF
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: Raleigh, NC
Sample Description/Location:
Work Order: 2110796
Date Received: 9/15/2021
Sub Description/Location:
Initial Vacuum(in Hg): -30
Field Sample #: SS-CN-1
Canister ID: 2347
Final Vacuum(in Hg): -5
Sample ID: 21I0796-01
Canister Size: 1 liter
Receipt Vacuum(in Hg): -5.9
Sample Matrix: Soil Gas
Flow Controller ID: 4253
Flow Controller Type: Fixed -Orifice
Sampled: 9/14/2021 12:23
Sample Type: 10 min
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv
ug/m3
Date/Time
Analyte
Results
RL
MDL
Flag/Qual
Results
RL
MDL
Dilution
Analyzed
Analyst
Tetrachloroethylene
0.064
0.20
0.059
J
0.43
1.4
0.40
4
9/23/21 21:12
BRF
Tetrahydrofuran
ND
2.0
0.49
ND
5.9
1.5
4
9/23/21 21:12
BRF
Toluene
0.41
0.20
0.084
1.5
0.75
0.32
4
9/23/21 21:12
BRF
1,2,4-Trichlorobenzene
ND
0.40
0.14
V-04
ND
3.0
1.0
4
9/23/21 21:12
BRF
1, 1, 1 -Trichloroethane
ND
0.20
0.092
ND
1.1
0.50
4
9/23/21 21:12
BRF
1,1,2-Trichloroethane
ND
0.20
0.080
ND
1.1
0.43
4
9/23/21 21:12
BRF
Trichloroethylene
ND
0.20
0.074
ND
1.1
0.40
4
9/23/21 21:12
BRF
Trichlorofluoromethane (Freon 11)
0.36
0.80
0.080
J
2.0
4.5
0.45
4
9/23/21 21:12
BRF
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
0.13
0.80
0.071
J
1.0
6.1
0.54
4
9/23/21 21:12
BRF
1,2,4-Trimethylbenzene
0.16
0.20
0.059
J
0.81
0.98
0.29
4
9/23/21 21:12
BRF
1,3,5-Trimethylbenzene
0.056
0.20
0.055
J
0.28
0.98
0.27
4
9/23/21 21:12
BRF
Vinyl Acetate
ND
4.0
0.37
ND
14
1.3
4
9/23/21 21:12
BRF
Vinyl Chloride
ND
0.20
0.079
ND
0.51
0.20
4
9/23/21 21:12
BRF
m&p-Xylene
0.40
0.40
0.11
1.7
1.7
0.48
4
9/23/21 21:12
BRF
o-Xylene
0.18
0.20
0.054
J
0.76
0.87
0.23
4
9/23/21 21:12
BRF
Surrogates
% Recovery
% REC Limits
4-Bromofluorobenzene (1)
92.9
70-130
9/23/21 21:37
4-Bromofluorobenzene (1)
93.8
70-130
9/24/21 7:35
4-Bromofluorobenzene (1)
93.9
70-130
9/23/21 21:12
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: Raleigh, NC
Sample Description/Location:
Work Order: 2110796
Date Received: 9/15/2021
Sub Description/Location:
Initial Vacuum(in Hg): -29
Field Sample #: SS-CN-2
Canister ID: 2235
Final Vacuum(in Hg): -5
Sample ID: 21I0796-02
Canister Size: 1 liter
Receipt Vacuum(in Hg): -5.6
Sample Matrix: Soil Gas
Flow Controller ID: 4134
Flow Controller Type: Fixed -Orifice
Sampled: 9/14/2021 12:44
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
250
60
36
580
140
86
30
9/23/21 22:53
BRF
Benzene
ND
0.20
0.048
ND
0.64
0.15
4
9/23/21 22:03
BRF
Benzyl chloride
ND
0.20
0.090
ND
1.0
0.47
4
9/23/21 22:03
BRF
Bromodichloromethane
ND
0.20
0.073
ND
1.3
0.49
4
9/23/21 22:03
BRF
Bromoform
ND
0.20
0.072
ND
2.1
0.74
4
9/23/21 22:03
BRF
Bromomethane
ND
0.20
0.16
ND
0.78
0.63
4
9/23/21 22:03
BRF
1,3-Butadiene
ND
0.20
0.14
ND
0.44
0.31
4
9/23/21 22:03
BRF
2-Butanone (MEK)
15
8.0
0.66
45
24
2.0
4
9/23/21 22:03
BRF
Carbon Disulfide
ND
2.0
0.51
ND
6.2
1.6
4
9/23/21 22:03
BRF
Carbon Tetrachloride
0.068
0.20
0.060
J
0.43
1.3
0.38
4
9/23/21 22:03
BRF
Chlorobenzene
ND
0.20
0.060
ND
0.92
0.27
4
9/23/21 22:03
BRF
Chloroethane
ND
0.20
0.15
ND
0.53
0.39
4
9/23/21 22:03
BRF
Chloroform
0.16
0.20
0.048
J
0.76
0.98
0.24
4
9/23/21 22:03
BRF
Chloromethane
ND
0.40
0.082
ND
0.83
0.17
4
9/23/21 22:03
BRF
Cyclohexane
ND
0.20
0.13
ND
0.69
0.46
4
9/23/21 22:03
BRF
Dibromochloromethane
ND
0.20
0.067
ND
1.7
0.57
4
9/23/21 22:03
BRF
1,2-Dibromoethane (EDB)
ND
0.20
0.056
ND
1.5
0.43
4
9/23/21 22:03
BRF
1,2-Dichlorobenzene
ND
0.20
0.074
ND
1.2
0.44
4
9/23/21 22:03
BRF
1,3-Dichlorobenzene
ND
0.20
0.048
ND
1.2
0.29
4
9/23/21 22:03
BRF
1,4-Dichlorobenzene
ND
0.20
0.081
ND
1.2
0.49
4
9/23/21 22:03
BRF
Dichlorodifluoromethane (Freon 12)
0.55
0.20
0.061
2.7
0.99
0.30
4
9/23/21 22:03
BRF
1,1-Dichloroethane
ND
0.20
0.067
ND
0.81
0.27
4
9/23/21 22:03
BRF
1,2-Dichloroethane
ND
0.20
0.073
ND
0.81
0.30
4
9/23/21 22:03
BRF
1,1-Dichloroethylene
ND
0.20
0.079
ND
0.79
0.31
4
9/23/21 22:03
BRF
cis-1,2-Dichloroethylene
ND
0.20
0.068
ND
0.79
0.27
4
9/23/21 22:03
BRF
trans-1,2-Dichloroethylene
ND
0.20
0.070
ND
0.79
0.28
4
9/23/21 22:03
BRF
1,2-Dichloropropane
ND
0.20
0.072
ND
0.92
0.33
4
9/23/21 22:03
BRF
cis- 1,3 -Dichloropropene
ND
0.20
0.093
ND
0.91
0.42
4
9/23/21 22:03
BRF
trans- 1, 3 -Dichloropropene
ND
0.20
0.062
ND
0.91
0.28
4
9/23/21 22:03
BRF
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)
ND
0.20
0.069
ND
1.4
0.48
4
9/23/21 22:03
BRF
1,4-Dioxane
1.6
2.0
0.14
J
5.7
7.2
0.49
4
9/23/21 22:03
BRF
Ethanol
1400
60
18
2700
110
34
30
9/23/21 22:53
BRF
Ethyl Acetate
ND
2.0
1.2
L-03, V-34
ND
7.2
4.3
4
9/23/21 22:03
BRF
Ethylbenzene
0.076
0.20
0.052
J
0.33
0.87
0.22
4
9/23/21 22:03
BRF
4-Ethyltoluene
ND
0.20
0.062
ND
0.98
0.30
4
9/23/21 22:03
BRF
Heptane
ND
0.20
0.082
ND
0.82
0.34
4
9/23/21 22:03
BRF
Hexachlorobutadiene
ND
0.20
0.11
V-05
ND
2.1
1.2
4
9/23/21 22:03
BRF
Hexane
ND
8.0
0.66
ND
28
2.3
4
9/23/21 22:03
BRF
2-Hexanone (MBK)
ND
0.40
0.10
ND
1.6
0.41
4
9/23/21 22:03
BRF
Isopropanol
32
8.0
1.8
79
20
4.5
4
9/23/21 22:03
BRF
Methyl tert-Butyl Ether (MTBE)
ND
0.20
0.080
ND
0.72
0.29
4
9/23/21 22:03
BRF
Methylene Chloride
0.73
2.0
0.46
J
2.5
6.9
1.6
4
9/23/21 22:03
BRF
4-Methyl-2-pentanone (MIBK)
ND
0.20
0.10
ND
0.82
0.42
4
9/23/21 22:03
BRF
Naphthalene
ND
0.20
0.13
ND
1.0
0.66
4
9/23/21 22:03
BRF
Propene
ND
8.0
0.67
ND
14
1.2
4
9/23/21 22:03
BRF
Styrene
ND
0.20
0.063
ND
0.85
0.27
4
9/23/21 22:03
BRF
1,1,2,2-Tetrachloroethane
ND
0.20
0.061
ND
1.4
0.42
4
9/23/21 22:03
BRF
Page 8 of 26

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Raleigh, NC
Sample Description/Location:
Work Order: 2110796
Date Received: 9/15/2021
Sub Description/Location:
Initial Vacuum(in Hg): -29
Field Sample #: SS-CN-2
Canister ID: 2235
Final Vacuum(in Hg): -5
Sample ID: 21I0796-02
Canister Size: 1 liter
Receipt Vacuum(in Hg): -5.6
Sample Matrix: Soil Gas
Flow Controller ID: 4134
Flow Controller Type: Fixed -Orifice
Sampled: 9/14/2021 12:44
Sample Type: 10 min
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv
ug/m3
Date/Time
Analyte
Results
RL
MDL
Flag/Qual Results
RL
MDL
Dilution
Analyzed
Analyst
Tetrachloroethylene
ND
0.20
0.059
ND
1.4
0.40
4
9/23/21 22:03
BRF
Tetrahydrofuran
10
2.0
0.49
31
5.9
1.5
4
9/23/21 22:03
BRF
Toluene
0.29
0.20
0.084
1.1
0.75
0.32
4
9/23/21 22:03
BRF
1,2,4-Trichlorobenzene
ND
0.40
0.14
V-04 ND
3.0
1.0
4
9/23/21 22:03
BRF
1, 1, 1 -Trichloroethane
ND
0.20
0.092
ND
1.1
0.50
4
9/23/21 22:03
BRF
1,1,2-Trichloroethane
ND
0.20
0.080
ND
1.1
0.43
4
9/23/21 22:03
BRF
Trichloroethylene
0.076
0.20
0.074
J 0.41
1.1
0.40
4
9/23/21 22:03
BRF
Trichlorofluoromethane (Freon 11)
1.1
0.80
0.080
5.9
4.5
0.45
4
9/23/21 22:03
BRF
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
0.092
0.80
0.071
J 0.71
6.1
0.54
4
9/23/21 22:03
BRF
1,2,4-Trimethylbenzene
ND
0.20
0.059
ND
0.98
0.29
4
9/23/21 22:03
BRF
1,3,5-Trimethylbenzene
ND
0.20
0.055
ND
0.98
0.27
4
9/23/21 22:03
BRF
Vinyl Acetate
ND
4.0
0.37
ND
14
1.3
4
9/23/21 22:03
BRF
Vinyl Chloride
ND
0.20
0.079
ND
0.51
0.20
4
9/23/21 22:03
BRF
m&p-Xylene
0.21
0.40
0.11
J 0.92
1.7
0.48
4
9/23/21 22:03
BRF
o-Xylene
0.10
0.20
0.054
J 0.45
0.87
0.23
4
9/23/21 22:03
BRF
Surrogates
% Recovery
% REC Limits
4-Bromofluorobenzene (1)
95.4
70-130
9/23/21 22:03
4-Bromofluorobenzene (1)
91.3
70-130
9/23/21 22:53
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: Raleigh, NC
Sample Description/Location:
Work Order: 2110796
Date Received: 9/15/2021
Sub Description/Location:
Initial Vacuum(in Hg): -29
Field Sample #: SS-CN-2-DUP
Canister ID: 2303
Final Vacuum(in Hg): -5
Sample ID: 21I0796-03
Canister Size: 1 liter
Receipt Vacuum(in Hg): -5.6
Sample Matrix: Soil Gas
Flow Controller ID: 4330
Flow Controller Type: Fixed -Orifice
Sampled: 9/14/2021 13:09
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
180
8.0
4.8
420
19
11
4
9/23/21 23:19
BRF
Benzene
ND
0.20
0.048
ND
0.64
0.15
4
9/23/21 23:19
BRF
Benzyl chloride
ND
0.20
0.090
ND
1.0
0.47
4
9/23/21 23:19
BRF
Bromodichloromethane
ND
0.20
0.073
ND
1.3
0.49
4
9/23/21 23:19
BRF
Bromoform
ND
0.20
0.072
ND
2.1
0.74
4
9/23/21 23:19
BRF
Bromomethane
ND
0.20
0.16
ND
0.78
0.63
4
9/23/21 23:19
BRF
1,3-Butadiene
ND
0.20
0.14
ND
0.44
0.31
4
9/23/21 23:19
BRF
2-Butanone (MEK)
12
8.0
0.66
35
24
2.0
4
9/23/21 23:19
BRF
Carbon Disulfide
ND
2.0
0.51
ND
6.2
1.6
4
9/23/21 23:19
BRF
Carbon Tetrachloride
0.064
0.20
0.060
J
0.40
1.3
0.38
4
9/23/21 23:19
BRF
Chlorobenzene
ND
0.20
0.060
ND
0.92
0.27
4
9/23/21 23:19
BRF
Chloroethane
ND
0.20
0.15
ND
0.53
0.39
4
9/23/21 23:19
BRF
Chloroform
0.15
0.20
0.048
J
0.74
0.98
0.24
4
9/23/21 23:19
BRF
Chloromethane
ND
0.40
0.082
ND
0.83
0.17
4
9/23/21 23:19
BRF
Cyclohexane
ND
0.20
0.13
ND
0.69
0.46
4
9/23/21 23:19
BRF
Dibromochloromethane
ND
0.20
0.067
ND
1.7
0.57
4
9/23/21 23:19
BRF
1,2-Dibromoethane (EDB)
ND
0.20
0.056
ND
1.5
0.43
4
9/23/21 23:19
BRF
1,2-Dichlorobenzene
ND
0.20
0.074
ND
1.2
0.44
4
9/23/21 23:19
BRF
1,3-Dichlorobenzene
ND
0.20
0.048
ND
1.2
0.29
4
9/23/21 23:19
BRF
1,4-Dichlorobenzene
ND
0.20
0.081
ND
1.2
0.49
4
9/23/21 23:19
BRF
Dichlorodifluoromethane (Freon 12)
0.42
0.20
0.061
2.1
0.99
0.30
4
9/23/21 23:19
BRF
1,1-Dichloroethane
ND
0.20
0.067
ND
0.81
0.27
4
9/23/21 23:19
BRF
1,2-Dichloroethane
ND
0.20
0.073
ND
0.81
0.30
4
9/23/21 23:19
BRF
1,1-Dichloroethylene
ND
0.20
0.079
ND
0.79
0.31
4
9/23/21 23:19
BRF
cis-1,2-Dichloroethylene
ND
0.20
0.068
ND
0.79
0.27
4
9/23/21 23:19
BRF
trans-1,2-Dichloroethylene
ND
0.20
0.070
ND
0.79
0.28
4
9/23/21 23:19
BRF
1,2-Dichloropropane
ND
0.20
0.072
ND
0.92
0.33
4
9/23/21 23:19
BRF
cis- 1,3 -Dichloropropene
ND
0.20
0.093
ND
0.91
0.42
4
9/23/21 23:19
BRF
trans- 1, 3 -Dichloropropene
ND
0.20
0.062
ND
0.91
0.28
4
9/23/21 23:19
BRF
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)
ND
0.20
0.069
ND
1.4
0.48
4
9/23/21 23:19
BRF
1,4-Dioxane
1.4
2.0
0.14
J
5.1
7.2
0.49
4
9/23/21 23:19
BRF
Ethanol
1300
60
18
2500
110
34
30
9/23/21 23:44
BRF
Ethyl Acetate
ND
2.0
1.2
L-03, V-34
ND
7.2
4.3
4
9/23/21 23:19
BRF
Ethylbenzene
0.064
0.20
0.052
J
0.28
0.87
0.22
4
9/23/21 23:19
BRF
4-Ethyltoluene
ND
0.20
0.062
ND
0.98
0.30
4
9/23/21 23:19
BRF
Heptane
ND
0.20
0.082
ND
0.82
0.34
4
9/23/21 23:19
BRF
Hexachlorobutadiene
ND
0.20
0.11
V-05
ND
2.1
1.2
4
9/23/21 23:19
BRF
Hexane
ND
8.0
0.66
ND
28
2.3
4
9/23/21 23:19
BRF
2-Hexanone (MBK)
ND
0.40
0.10
ND
1.6
0.41
4
9/23/21 23:19
BRF
Isopropanol
28
8.0
1.8
69
20
4.5
4
9/23/21 23:19
BRF
Methyl tert-Butyl Ether (MTBE)
ND
0.20
0.080
ND
0.72
0.29
4
9/23/21 23:19
BRF
Methylene Chloride
0.90
2.0
0.46
J
3.1
6.9
1.6
4
9/23/21 23:19
BRF
4-Methyl-2-pentanone (MIBK)
0.58
0.20
0.10
2.4
0.82
0.42
4
9/23/21 23:19
BRF
Naphthalene
0.13
0.20
0.13
J
0.67
1.0
0.66
4
9/23/21 23:19
BRF
Propene
ND
8.0
0.67
ND
14
1.2
4
9/23/21 23:19
BRF
Styrene
0.11
0.20
0.063
J
0.46
0.85
0.27
4
9/23/21 23:19
BRF
1,1,2,2-Tetrachloroethane
ND
0.20
0.061
ND
1.4
0.42
4
9/23/21 23:19
BRF
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: Raleigh, NC
Sample Description/Location:
Work Order: 2110796
Date Received: 9/15/2021
Sub Description/Location:
Initial Vacuum(in Hg): -29
Field Sample #: SS-CN-2-DUP
Canister ID: 2303
Final Vacuum(in Hg): -5
Sample ID: 21I0796-03
Canister Size: 1 liter
Receipt Vacuum(in Hg): -5.6
Sample Matrix: Soil Gas
Flow Controller ID: 4330
Flow Controller Type: Fixed -Orifice
Sampled: 9/14/2021 13:09
Sample Type: 10 min
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv
ug/m3
Date/Time
Analyte
Results
RL
MDL
Flag/Qual Results
RL
MDL
Dilution
Analyzed
Analyst
Tetrachloroethylene
0.076
0.20
0.059
J 0.52
1.4
0.40
4
9/23/21 23:19
BRF
Tetrahydrofuran
8.6
2.0
0.49
25
5.9
1.5
4
9/23/21 23:19
BRF
Toluene
0.26
0.20
0.084
0.98
0.75
0.32
4
9/23/21 23:19
BRF
1,2,4-Trichlorobenzene
ND
0.40
0.14
V-04 ND
3.0
1.0
4
9/23/21 23:19
BRF
1, 1, 1 -Trichloroethane
ND
0.20
0.092
ND
1.1
0.50
4
9/23/21 23:19
BRF
1,1,2-Trichloroethane
ND
0.20
0.080
ND
1.1
0.43
4
9/23/21 23:19
BRF
Trichloroethylene
ND
0.20
0.074
ND
1.1
0.40
4
9/23/21 23:19
BRF
Trichlorofluoromethane (Freon 11)
1.1
0.80
0.080
5.9
4.5
0.45
4
9/23/21 23:19
BRF
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
0.12
0.80
0.071
J 0.89
6.1
0.54
4
9/23/21 23:19
BRF
1,2,4-Trimethylbenzene
ND
0.20
0.059
ND
0.98
0.29
4
9/23/21 23:19
BRF
1,3,5-Trimethylbenzene
ND
0.20
0.055
ND
0.98
0.27
4
9/23/21 23:19
BRF
Vinyl Acetate
ND
4.0
0.37
ND
14
1.3
4
9/23/21 23:19
BRF
Vinyl Chloride
ND
0.20
0.079
ND
0.51
0.20
4
9/23/21 23:19
BRF
m&p-Xylene
0.21
0.40
0.11
J 0.92
1.7
0.48
4
9/23/21 23:19
BRF
o-Xylene
0.10
0.20
0.054
J 0.43
0.87
0.23
4
9/23/21 23:19
BRF
Surrogates
% Recovery
% REC Limits
4-Bromofluorobenzene (1)
91.2
70-130
9/23/21 23:44
4-Bromofluorobenzene (1)
94.8
70-130
9/23/21 23:19
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 ID]
Batch
Pressure
Dilution
Pre
Dilution
Pre-Dil
Initial
mL
Pre-Dil
Final
mL
Default
Injection
mL
Actual
Injection
mL
Date
21I0796-01 [SS-CN-1]
B290914
1.5
1
N/A
1000
200
75
09/23/21
21I0796-OIRE1 [SS-CN-1]
B290914
1.5
1
N/A
1000
200
10
09/23/21
21I0796-01RE2 [SS-CN-1]
B290914
1.5
200
5
1000
200
200
09/23/21
21I0796-02 [SS-CN-2]
B290914
1.5
1
N/A
1000
200
75
09/23/21
21I0796-02RE1 [SS-CN-2]
B290914
1.5
1
N/A
1000
200
10
09/23/21
21I0796-03 [SS-CN-2-DUP]
B290914
1.5
1
N/A
1000
200
75
09/23/21
21I0796-03RE1 [SS-CN-2-DUP]
B290914
1.5
1
N/A
1000
200
10
09/23/21
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
malyte Results RL Results RL ppbv Result %REC Limits RPD Limit Flag/Qua
Batch B290914 - TO-15 Prep
Blank (B290914-BLK1)
Prepared & Analyzed: 09/23/21
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
1,4-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
Ethyl Acetate
ND
0.20
L-03, V-34
Ethylbenzene
ND
0.020
4-Ethyltoluene
ND
0.020
Heptane
ND
0.020
Hexachlorobutadiene
ND
0.020
V-05
Hexane
ND
0.80
2-Hexanone (MBK)
ND
0.020
Isopropanol
ND
0.80
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 B290914 - TO-15 Prep
Blank (B290914-BLKI)
Prepared & Analyzed: 09/23/21
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 V-04
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
Vinyl Chloride
ND
0.020
m&p-Xylene
ND
0.040
o-Xylene
ND
0.020
Surrogate: 4-Bromofluorobenzene (1)
LCS (B290914-BSI)
7.58
8.00 94.7
Prepared & Analyzed: 09/23/21
70-130
Acetone
4.28
5.00
85.7
70-130
Benzene
5.28
5.00
106
70-130
Benzyl chloride
6.50
5.00
130
70-130
Bromodichloromethane
4.83
5.00
96.5
70-130
Bromoform
5.05
5.00
101
70-130
Bromomethane
6.16
5.00
123
70-130
1,3-Butadiene
5.86
5.00
117
70-130
2-Butanone (MEK)
4.38
5.00
87.6
70-130
Carbon Disulfide
6.05
5.00
121
70-130
Carbon Tetrachloride
4.29
5.00
85.8
70-130
Chlorobenzene
4.95
5.00
99.0
70-130
Chloroethane
6.33
5.00
127
70-130
Chloroform
5.15
5.00
103
70-130
Chloromethane
5.45
5.00
109
70-130
Cyclohexane
4.98
5.00
99.7
70-130
Dibromochloromethane
5.00
5.00
99.9
70-130
1,2-Dibromoethane (EDB)
5.07
5.00
101
70-130
1,2-Dichlorobenzene
5.07
5.00
101
70-130
1,3-Dichlorobenzene
5.40
5.00
108
70-130
1,4-Dichlorobenzene
5.19
5.00
104
70-130
Dichlorodifluoromethane (Freon 12)
5.22
5.00
104
70-130
1,1-Dichloroethane
5.26
5.00
105
70-130
1,2-Dichloroethane
4.37
5.00
87.4
70-130
1, 1 -Dichloroethylene
5.44
5.00
109
70-130
cis-1,2-Dichloroethylene
5.04
5.00
101
70-130
trans-1,2-Dichloroethylene
4.95
5.00
98.9
70-130
1,2-Dichloropropane
4.98
5.00
99.7
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 B290914 - TO-15 Prep
LCS (B290914-BS1)
Prepared & Analyzed: 09/23/21
cis-1,3-Dichloropropene
5.26
5.00
105
70-130
trans-1,3-Dichloropropene
5.32
5.00
106
70-130
1,2-Dichloro- 1, 1,2,2-tetrafluoroethane
5.54
5.00
ill
70-130
(Freon 114)
1,4-Dioxane
5.32
5.00
106
70-130
Ethanol
6.28
5.00
126
70-130
Ethyl Acetate
3.48
5.00
69.5
* 70-130
L-03,V-34
Ethylbenzene
5.15
5.00
103
70-130
4-Ethyltoluene
5.36
5.00
107
70-130
Heptane
4.95
5.00
99.1
70-130
Hexachlorobutadiene
3.70
5.00
74.0
70-130
V-0'-
Hexane
4.44
5.00
88.8
70-130
2-Hexanone (MBK)
4.95
5.00
99.0
70-130
Isopropanol
3.92
5.00
78.4
70-130
Methyl tert-Butyl Ether (MTBE)
4.85
5.00
97.1
70-130
Methylene Chloride
5.02
5.00
100
70-130
4-Methyl-2-pentanone (MIBK)
5.42
5.00
108
70-130
Naphthalene
5.44
5.00
109
70-130
Propene
5.07
5.00
101
70-130
Styrene
5.50
5.00
110
70-130
1,1,2,2-Tetrachloroethane
5.37
5.00
107
70-130
Tetrachloroethylene
4.52
5.00
90.4
70-130
Tetrahydrofuran
4.29
5.00
85.7
70-130
Toluene
5.14
5.00
103
70-130
1,2,4-Trichlorobenzene
4.88
5.00
97.6
70-130
V-04
1, 1, 1 -Trichloroethane
4.31
5.00
86.2
70-130
1,1,2-Trichloroethane
5.04
5.00
101
70-130
Trichloroethylene
4.98
5.00
99.6
70-130
Trichlorofluoromethane (Freon 11)
5.19
5.00
104
70-130
1, 1,2-Trichloro- 1,2,2-trifluoroethane (Freon
5.99
5.00
120
70-130
113)
1,2,4-Trimethylbenzene
4.97
5.00
99.4
70-130
1,3,5-Trimethylbenzene
5.01
5.00
100
70-130
Vinyl Acetate
6.44
5.00
129
70-130
V-3(
Vinyl Chloride
6.28
5.00
126
70-130
m&p-Xylene
10.2
10.0
102
70-130
o-Xylene
5.03
5.00
101
70-130
Surrogate: 4-Bromofluorobenzene (1) 7.61 8.00 95.1 70-130
Page 15 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
Analyte Results RL Results RL ppbv Result %REC Limits RPD Limit Flag/Qual
Batch B290914 - TO-15 Prep
Duplicate (B290914-DUPI)
Source: 21I0796-02
Prepared & Analyzed: 09/23/21
Acetone
230
8.0
540
19
230
0.622
25
E
Benzene
ND
0.20
ND
0.64
ND
25
Benzyl chloride
ND
0.20
ND
1.0
ND
25
Bromodichloromethane
ND
0.20
ND
1.3
ND
25
Bromoform
ND
0.20
ND
2.1
ND
25
Bromomethane
ND
0.20
ND
0.78
ND
25
1,3-Butadiene
ND
0.20
ND
0.44
ND
25
2-Butanone (MEK)
15
8.0
45
24
15
0.131
25
Carbon Disulfide
ND
2.0
ND
6.2
ND
25
Carbon Tetrachloride
0.072
0.20
0.45
1.3
0.068
5.71
25
J
Chlorobenzene
ND
0.20
ND
0.92
ND
25
Chloroethane
ND
0.20
ND
0.53
ND
25
Chloroform
0.16
0.20
0.78
0.98
0.16
2.53
25
J
Chloromethane
ND
0.40
ND
0.83
ND
25
Cyclohexane
ND
0.20
ND
0.69
ND
25
Dibromochloromethane
ND
0.20
ND
1.7
ND
25
1,2-Dibromoethane (EDB)
ND
0.20
ND
1.5
ND
25
1,2-Dichlorobenzene
ND
0.20
ND
1.2
ND
25
1,3-Dichlorobenzene
ND
0.20
ND
1.2
ND
25
1,4-Dichlorobenzene
ND
0.20
ND
1.2
ND
25
Dichlorodifluoromethane (Freon 12)
0.50
0.20
2.5
0.99
0.55
8.37
25
1,1-Dichloroethane
ND
0.20
ND
0.81
ND
25
1,2-Dichloroethane
ND
0.20
ND
0.81
ND
25
1,1-Dichloroethylene
ND
0.20
ND
0.79
ND
25
cis-1,2-Dichloroethylene
ND
0.20
ND
0.79
ND
25
trans-1,2-Dichloroethylene
ND
0.20
ND
0.79
ND
25
1,2-Dichloropropane
ND
0.20
ND
0.92
ND
25
cis-1,3-Dichloropropene
ND
0.20
ND
0.91
ND
25
trans- 1, 3 -Dichloropropene
ND
0.20
ND
0.91
ND
25
1,2-Dichloro- 1, 1,2,2-tetrafluoroethane
ND
0.20
ND
1.4
ND
25
(Freon 114)
1,4-Dioxane
1.4
2.0
5.2
7.2
1.6
9.50
25
J
Ethanol
1300
8.0
2400
15
1300
0.620
25
E
Ethyl Acetate
ND
2.0
ND
7.2
ND
25
L-03, V-34
Ethylbenzene
0.076
0.20
0.33
0.87
0.076
0.00
25
J
4-Ethyltoluene
ND
0.20
ND
0.98
ND
25
Heptane
ND
0.20
ND
0.82
ND
25
Hexachlorobutadiene
ND
0.20
ND
2.1
ND
25
V-05
Hexane
ND
8.0
ND
28
ND
25
2-Hexanone (MBK)
ND
0.20
ND
0.82
ND
25
Isopropanol
31
8.0
77
20
32
2.78
25
Methyl tert-Butyl Ether (MTBE)
ND
0.20
ND
0.72
ND
25
Methylene Chloride
0.78
2.0
2.7
6.9
0.73
7.41
25
J
4-Methyl-2-pentanone (MIBK)
ND
0.20
ND
0.82
ND
25
Naphthalene
ND
0.20
ND
1.0
ND
25
Propene
ND
8.0
ND
14
ND
25
Styrene
ND
0.20
ND
0.85
ND
25
Page 16 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
Analyte Results RL Results RL ppbv Result %REC Limits RPD Limit Flag/Qual
Batch B290914 - TO-15 Prep
Duplicate (B290914-DUPI)
Source: 21I0796-02
Prepared & Analyzed: 09/23/21
1,1,2,2-Tetrachloroethane
ND
0.20
ND
1.4
ND
25
Tetrachloroethylene
0.080
0.20
0.54
1.4
ND
25
J
Tetrahydrofuran
11
2.0
33
5.9
10
6.97
25
Toluene
0.22
0.20
0.84
0.75
0.29
25.0
25
1,2,4-Trichlorobenzene
ND
0.20
ND
1.5
ND
25
V-04
1, 1, 1 -Trichloroethane
ND
0.20
ND
1.1
ND
25
1,1,2-Trichloroethane
ND
0.20
ND
1.1
ND
25
Trichloroethylene
0.10
0.20
0.54
1.1
0.076
27.3
25
R-04, J
Trichlorofluoromethane (Freon 11)
1.1
0.80
6.2
4.5
1.1
4.10
25
1, 1,2-Trichloro- 1,2,2-trifluoroethane (Freon
0.11
0.80
0.86
6.1
0.092
19.6
25
J
113)
1,2,4-Trimethylbenzene
ND
0.20
ND
0.98
ND
25
1,3,5-Trimethylbenzene
ND
0.20
ND
0.98
ND
25
Vinyl Acetate
ND
4.0
ND
14
ND
25
Vinyl Chloride
ND
0.20
ND
0.51
ND
25
m&p-Xylene
0.19
0.40
0.82
1.7
0.21
12.0
25
J
o-Xylene
0.084
0.20
0.36
0.87
0.10
21.3
25
J
Surrogate: 4-Bromofluorobenzene (1) 7.50 8.00 93.8 70-130
Page 17 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.
E Reported result is estimated. Value reported over verified calibration range.
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.
R-04 Duplicate relative percent difference (RPD) is a less useful indicator of sample precision for sample results that
are <5 times the reporting limit (RL).
V-04 Initial calibration did not meet method specifications. Compound was calibrated using a response factor where
%RSD is outside of method specified criteria. Reported result is estimated.
V-05 Continuing calibration verification (CCV) did not meet method specifications and was biased on the low side for
this compound.
V-34 Initial calibration verification (ICV) did not meet method specifications and was biased on the low side for this
compound. Reported result is estimated.
V-36 Initial calibration verification (ICV) did not meet method specifications and was biased on the high side. Data
validation is not affected since sample result was "not detected" for this compound.
Page 18 of 26

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
TPH
Thomas P. Hnitecki
RLF
Rebecca Faust
RAP
Raisa A. Petraitis
MEK
Meghan E. Kelley
KKM
Kerry K. McGee
BRF
Brittany R. Fisk
ANALYST
Page 19 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
SS-CN-1 (21I0796-01) Lab File ID: J21A266022.D Analyzed: 09/23/21 21:12
Bromochloromethane (1)
168092
2.85
60 - 140
2.8500
+/-0.50
1,4-Difluorobenzene(1)
816400
3.461
60-140
3.4610
+/-0.50
Chlorobenzene-d5(1)
752847
5.05
60-140
5.0500
+/-0.50
SS-CN-1 (21I0796-01RE1) Lab File ID: J21A266023.D Analyzed: 09/23/21 21:37
Bromochloromethane (1)
166869
2.847
60 - 140
2.8470
+/-0.50
1,4-Difluorobenzene(1)
809806
3.459
60-140
3.4590
+/-0.50
Chlorobenzene-d5(1)
732451
5.054
60-140
5.0540
+/-0.50
SS-CN-2 (21I0796-02) Lab File ID: J2IA266024.D Analyzed: 09/23/21 22:03
Bromochloromethane (1)
167445
2.85
60 - 140
2.8500
+/-0.50
1,4-Difluorobenzene(1)
815788
3.459
60-140
3.4590
+/-0.50
Chlorobenzene-d5 (1)
741944
5.051
60 - 140
5.0510
+/-0.50
SS-CN-2 (21I0796-02REI) Lab File ID: J21A266026.D Analyzed: 09/23/21 22:53
Bromochloromethane (1)
167170
2.847
60 - 140
2.8470
+/-0.50
1,4-Difluorobenzene(1)
817151
3.458
60-140
3.4580
+/-0.50
Chlorobenzene-d5(1)
745508
5.05
60-140
5.0500
+/-0.50
SS-CN-2-DUP (21I0796-03) Lab File ID: J21A266027.D Analyzed: 09/23/21 23:19
Bromochloromethane (1)
170019
2.85
60 - 140
2.8500
+/-0.50
1,4-Difluorobenzene(1)
815374
3.462
60-140
3.4620
+/-0.50
Chlorobenzene-d5(1)
747127
5.05
60-140
5.0500
+/-0.50
SS-CN-2-DUP (21I0796-03RE1) Lab File ID: J21A266028.D Analyzed: 09/23/21 23:44
Bromochloromethane (1)
166846
2.85
60 - 140
2.8500
+/-0.50
1,4-Difluorobenzene(1)
819235
3.461
60-140
3.4610
+/-0.50
Chlorobenzene-d5(1)
750312
5.053
60-140
5.0530
+/-0.50
SS-CN-1 (21I0796-01RE2) Lab File ID: J2IA26603LD Analyzed: 09/24/21 07:35
Bromochloromethane (1)
163499
2.85
60 - 140
2.8500
+/-0.50
1,4-Difluorobenzene(1)
799113
3.461
60-140
3.4610
+/-0.50
Chlorobenzene-d5(1)
734040
5.053
60-140
5.0530
+/-0.50
Page 20 of 26

con -test®
A Pace Analytical Laboratory
39 Spruce Street' East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
CONTINUING CALIBRATION CHECK
COMPOUND
TYPE
RESPONSE FACTOR
% DIFF / DRIFT
STD
CCV
ICAL
CCV
MIN (#)
CCV
LIMIT (#)
# 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 - ISO17025:2017
100033
03/l/2022
MA
Massachusetts DEP
M-MA100
06/30/2022
CT
Connecticut Department of Publilc Health
PH-0165
12/31/2022
NY
New York State Department of Health
10899 NELAP
04/l/2022
NH-S
New Hampshire Environmental Lab
2516 NELAP
02/5/2022
RI
Rhode Island Department of Health
LA000112
12/30/2021
NC
North Carolina Div. of Water Quality
652
12/31/2021
NJ
New Jersey DEP
MA007 NELAP
06/30/2022
FL
Florida Department of Health
E871027 NELAP
06/30/2022
VT
Vermont Department of Health Lead Laboratory
LL720741
07/30/2022
ME
State of Maine
MA00100
06/9/2023
VA
Commonwealth of Virginia
460217
12/14/2021
NH-P
New Hampshire Environmental Lab
2557 NELAP
09/6/2022
VT-DW
Vermont Department of Health Drinking Water
VT-255716
06/12/2022
NC-DW
North Carolina Department of Health
25703
07/31/2022
PA
Commonwealth of Pennsylvania DEP
68-05812
06/30/2022
MI
Dept. of Env, Great Lakes, and Energy
9100
09/6/2022
Page 23 of 26

9120121, 11:40 AM
Fe&x.
Detailed Tracking
Travel History
TRACK ANOTHER SHIPMENT
774811607550
ADO NICKNAME
Delivered
Monday, September 20, 2021 at 10.54 am
FROM
RALEIGH, NO US
TIME ZONE
Local Scan Time
Monday, September 20, 2021
10:54 AM East Longmeadow, MA
5 28 AM WIN DSOR, CT
5:21 AM WINDSOR, CT
Sunday, September 19, 2021
8:59 PM MIDDLETOWN, CT
Saturday, September 18, 2021
9:47 PM MIDDLETOWN, CT
9 42 PM MIDDLETOWN, CT
b:04 AM MIDDLETOWN, CT
Friday, September 17, 2021
DELIVERED
Signed for by: AA IN
GET STATUS UPDATES
OBTAIN PROOF OF DELIVERY
Delivered
On FedEx vehicle for delivery
At local FedEx facility
Departed FedEx location
Shipment exception
Barcode label unreadable and replaced
Arrived at FedEx location
In transit
TO
East Longmeadow, MA US
O
https:llwww.fedex,comlfedextrackl?trknbr=774811607550&trkqua1=12022-774811607550-FDEG I Page 25 0f 26

i
I Have Not Confirmed Sample Container
Numbers With Lab Staff Before cconmmtest
Relinquishing Overe.e.�ae_v�ec�� e_ase3c=e��a-rc�eaiv
Samples
Doc# 278 R&.
Air Media Sample Receipt Checklist - (Rejection Criteria Listing - Using Acceptance Policy) Any False
Statement will be brought to the attention of the Client - State True or False
Client 0\\6 - lC_.
Received BY p T_ ©ate --- _1(�.1 Time3
'��t— r
How were the samples In Cooler On Ice No Ice
received? In Box _ Ambient Melted Ice
Were samples within Temperature By Gun # Actual Temp -
Compliance? 2-6°C By Blank # Actual Temp -
Was Custody Seal Intact? Were Samples Tampered with?
Was COC Relinquished ? Does Chain Agree With Samples? j
Are there any loose caps/valves on any samples?
Is COC in ink/ Legible?
Did COC Include all Client Analysis 7 Sampler Name i
Pertinent Information? Project ID's j Collection Dates/Times I
Are Sample Labels filled out and legible?
Are there Rushes? V�- Who was notified?
Samples are received within holding time?
Proper Media Used?
Are there Trip Blanks?
Individually Certified Cans? '
Is there enough Volume? i
Page 26 of 26

Con -test®
A Pace Analytical® Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
September 28, 2021
Kevin Clay
Mid -Atlantic Associates, Inc. - Raleigh, NC
409 Rogers View Court
Raleigh, NC 27610
Project Location: Raleigh, NC
Client Job Number:
Project Number: R2667.01
Laboratory Work Order Number: 21I0797
Enclosed are results of analyses for samples received by the laboratory on September 15, 2021. If you have any questions
concerning this report, please feel free to contact me.
Sincerely,
Kerry K. McGee
Project Manager
QA Officer
Katherine Allen
Laboratory Manager
Daren Damboragian
Page 1 of 26

Con -test®
A Pace Analytical® Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
Mid -Atlantic Associates, Inc. - Raleigh, NC REPORT DATE: 9/28/2021
409 Rogers View Court
Raleigh, NC 27610 PURCHASE ORDER NUMBER:
ATTN: Kevin Clay
PROJECT NUMBER: R2667.01
ANALYTICAL SUMMARY
WORK ORDER NUMBER: 21I0797
The results of analyses performed on the following samples submitted to Con -Test, a Pace Analytical Laboratory, are found in this report.
PROJECT LOCATION: Raleigh, NC
FIELD SAMPLE # LAB ID: MATRIX SAMPLE DESCRIPTION TEST SUB LAB
IA-CN-1
21I0797-01
Indoor air
EPA TO-15
IA-CN-2
21I0797-02
Indoor air
EPA TO-15
IA-CN-2-DUP
21I0797-03
Indoor air
EPA TO-15
Ambient Air
21I0797-04
Indoor air
EPA TO-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:
Laboratory fortified blank/laboratory control sample recovery outside of control limits. Data validation is not affected since all results are "not
detected" for all samples in this batch for this compound and bias is on the high side.
Analyte & Samples(s) Qualified:
Benzyl chloride, Carbon Disulfide, Vinyl Acetate
B291074-BSI
Laboratory fortified blank/laboratory control sample recovery is outside of control limits. Reported value for this compound is likely to be
biased on the high side.
Analyte & Samples(s) Qualified:
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113), Ethanol
21I0797-01[IA-CN-1], 21I0797-02[IA-CN-2], 21I0797-03[IA-CN-2-DUP], 21I0797-04[AmbientAir], B291074-BSI
Continuing calibration verification (CCV) did not meet method specifications and was biased on the high side for this compound.
Analyte & Samples(s) Qualified:
1,3,5-Trimethylbenzene
21I0797-02[IA-CN-2], 21I0797-04[Ambient Air]
Continuing calibration verification (CCV) did not meet method specifications and was biased on the high side. Data validation is not affected
since sample result was "not detected" for this compound.
Analyte & Samples(s) Qualified:
Bromomethane, Carbon Disulfide
B291074-BS1
Initial calibration verification (ICV) did not meet method specifications and was biased on the high side for this compound. Reported result is
estimated.
Analyte & Samples(s) Qualified:
Naphthalene
21I0797-01[IA-CN-1], 21I0797-02[IA-CN-2], 21I0797-03[IA-CN-2-DUP], 21I0797-04[AmbientAir], B291074-BSI
Initial calibration verification (ICV) did not meet method specifications and was biased on the high side. Data validation is not affected since
sample result was "not detected" for this compound.
Analyte & Samples(s) Qualified:
Vinyl Acetate
B291074-BSI
Page 3 of 26

Con -test®
A Pace Analytical® Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
The results of analyses reported only relate to samples submitted to Con -Test, a Pace Analytical Laboratory, for testing.
I certify that the analyses listed above, unless specifically listed as subcontracted, if any, were performed under my direction according to the approved methodologies listed
in this document, and that based upon my inquiry of those individuals immediately responsible for obtaining the information, the material contained in this report is, to the
best of my knowledge and belief, accurate and complete.
Lisa A. Worthington
Technical Representative
Page 4 of 26

Con -test®
A Pace Analytical® Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Raleigh, NC
Date Received: 9/15/2021
Field Sample #: IA-CN-1
Sample ID: 21I0797-01
Sample Matrix: Indoor air
Sampled: 9/13/2021 14:13
Sample Description/Location:
Sub Description/Location:
Canister ID: 1613
Canister Size: 6 liter
Flow Controller ID: 3295
Sample Type: 8 hr
Work Order: 2110797
Initial Vacuum(in Hg): -30
Final Vacuum(in Hg): -8
Receipt Vacuum(in Hg): -6.4
Flow Controller Type: Fixed -Orifice
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv
ug/m3
Date/Time
Analyte
Results
RL
MDL
Flag/Qual Results
RL
MDL
Dilution
Analyzed
Analyst
Acetone
8.6
1.4
0.84
20
3.3
2.0
0.698
9/25/21
2:56
BRF
Benzene
0.20
0.035
0.0084
0.63
0.11
0.027
0.698
9/25/21
2:56
BRF
Benzyl chloride
ND
0.035
0.016
ND
0.18
0.081
0.698
9/25/21
2:56
BRF
Bromodichloromethane
ND
0.035
0.013
ND
0.23
0.085
0.698
9/25/21
2:56
BRF
Bromoform
ND
0.070
0.013
ND
0.72
0.13
0.698
9/25/21
2:56
BRF
Bromomethane
ND
0.035
0.028
ND
0.14
0.11
0.698
9/25/21
2:56
BRF
1,3-Butadiene
ND
0.035
0.024
ND
0.077
0.054
0.698
9/25/21
2:56
BRF
2-Butanone (MEK)
0.67
1.4
0.12
J 2.0
4.1
0.34
0.698
9/25/21
2:56
BRF
Carbon Disulfide
ND
0.35
0.089
ND
1.1
0.28
0.698
9/25/21
2:56
BRF
Carbon Tetrachloride
0.10
0.035
0.011
0.64
0.22
0.066
0.698
9/25/21
2:56
BRF
Chlorobenzene
ND
0.035
0.010
ND
0.16
0.048
0.698
9/25/21
2:56
BRF
Chloroethane
ND
0.035
0.025
ND
0.092
0.067
0.698
9/25/21
2:56
BRF
Chloroform
ND
0.035
0.0084
ND
0.17
0.041
0.698
9/25/21
2:56
BRF
Chloromethane
0.55
0.070
0.014
1.1
0.14
0.030
0.698
9/25/21
2:56
BRF
Cyclohexane
ND
0.035
0.023
ND
0.12
0.079
0.698
9/25/21
2:56
BRF
Dibromochloromethane
ND
0.035
0.012
ND
0.30
0.100
0.698
9/25/21
2:56
BRF
1,2-Dibromoethane (EDB)
ND
0.035
0.0098
ND
0.27
0.075
0.698
9/25/21
2:56
BRF
1,2-Dichlorobenzene
ND
0.035
0.013
ND
0.21
0.078
0.698
9/25/21
2:56
BRF
1,3-Dichlorobenzene
ND
0.035
0.0084
ND
0.21
0.051
0.698
9/25/21
2:56
BRF
1,4-Dichlorobenzene
ND
0.035
0.014
ND
0.21
0.085
0.698
9/25/21
2:56
BRF
Dichlorodifluoromethane (Freon 12)
0.47
0.035
0.011
2.3
0.17
0.053
0.698
9/25/21
2:56
BRF
1, 1 -Dichloroethane
ND
0.035
0.012
ND
0.14
0.047
0.698
9/25/21
2:56
BRF
1,2-Dichloroethane
ND
0.035
0.013
ND
0.14
0.052
0.698
9/25/21
2:56
BRF
1, 1 -Dichloroethylene
ND
0.035
0.014
ND
0.14
0.054
0.698
9/25/21
2:56
BRF
cis-1,2-Dichloroethylene
ND
0.035
0.012
ND
0.14
0.047
0.698
9/25/21
2:56
BRF
trans-1,2-Dichloroethylene
ND
0.035
0.012
ND
0.14
0.048
0.698
9/25/21
2:56
BRF
1,2-Dichloropropane
ND
0.035
0.013
ND
0.16
0.058
0.698
9/25/21
2:56
BRF
cis- 1,3 -Dichloropropene
ND
0.035
0.016
ND
0.16
0.073
0.698
9/25/21
2:56
BRF
trans- 1, 3 -Dichloropropene
ND
0.035
0.011
ND
0.16
0.049
0.698
9/25/21
2:56
BRF
1,2-Dichloro- 1, 1,2,2-tetrafluoroethane (Freon 114)
ND
0.035
0.012
ND
0.24
0.084
0.698
9/25/21
2:56
BRF
1,4-Dioxane
ND
0.35
0.024
ND
1.3
0.085
0.698
9/25/21
2:56
BRF
Ethanol
88
8.0
2.4
160
15
4.6
4
9/28/21
2:16
BRF
Ethyl Acetate
ND
0.35
0.21
ND
1.3
0.75
0.698
9/25/21
2:56
BRF
Ethylbenzene
0.066
0.035
0.0090
0.29
0.15
0.039
0.698
9/25/21
2:56
BRF
4-Ethyltoluene
ND
0.035
0.011
ND
0.17
0.053
0.698
9/25/21
2:56
BRF
Heptane
ND
0.035
0.014
ND
0.14
0.059
0.698
9/25/21
2:56
BRF
Hexachlorobutadiene
ND
0.035
0.019
ND
0.37
0.21
0.698
9/25/21
2:56
BRF
Hexane
ND
1.4
0.11
ND
4.9
0.40
0.698
9/25/21
2:56
BRF
2-Hexanone (MBK)
ND
0.035
0.018
ND
0.14
0.072
0.698
9/25/21
2:56
BRF
Isopropanol
1.6
1.4
0.32
4.0
3.4
0.79
0.698
9/25/21
2:56
BRF
Methyl tert-Butyl Ether (MTBE)
ND
0.035
0.014
ND
0.13
0.050
0.698
9/25/21
2:56
BRF
Methylene Chloride
0.39
0.35
0.080
1.3
1.2
0.28
0.698
9/25/21
2:56
BRF
4-Methyl-2-pentanone (MIBK)
ND
0.035
0.018
ND
0.14
0.073
0.698
9/25/21
2:56
BRF
Naphthalene
ND
0.035
0.022
V-35 ND
0.18
0.12
0.698
9/25/21
2:56
BRF
Propene
ND
1.4
0.12
ND
2.4
0.20
0.698
9/25/21
2:56
BRF
Styrene
0.15
0.035
0.011
0.64
0.15
0.047
0.698
9/25/21
2:56
BRF
1,1,2,2-Tetrachloroethane
ND
0.035
0.011
ND
0.24
0.073
0.698
9/25/21
2:56
BRF
Page 5 of 26

Con -test®
A Pace Analytical® Laboratory
Project Location: Raleigh, NC
Date Received: 9/15/2021
Field Sample #: IA-CN-1
Sample ID: 21I0797-01
Sample Matrix: Indoor air
Sampled: 9/ 13/2021 14:13
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Sample Description/Location:
Sub Description/Location:
Canister ID: 1613
Canister Size: 6 liter
Flow Controller ID: 3295
Sample Type: 8 hr
Work Order: 21I0797
Initial Vacuum(in Hg): -30
Final Vacuum(in Hg): -8
Receipt Vacuum(in Hg): -6.4
Flow Controller Type: Fixed -Orifice
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv ug/m3 Date/Time
Analyte Results RL MDL Flag/Qual Results RL MDL Dilution Analyzed Analyst
Tetrachloroethylene
ND
0.035
0.010
ND
0.24
0.070
0.698
9/25/21
2:56
BRF
Tetrahydrofuran
ND
0.35
0.086
ND
1.0
0.25
0.698
9/25/21
2:56
BRF
Toluene
0.48
0.035
0.015
1.8
0.13
0.055
0.698
9/25/21
2:56
BRF
1,2,4-Trichlorobenzene
ND
0.035
0.024
ND
0.26
0.18
0.698
9/25/21
2:56
BRF
1, 1, 1 -Trichloroethane
ND
0.035
0.016
ND
0.19
0.088
0.698
9/25/21
2:56
BRF
1,1,2-Trichloroethane
ND
0.035
0.014
ND
0.19
0.076
0.698
9/25/21
2:56
BRF
Trichloroethylene
ND
0.035
0.013
ND
0.19
0.069
0.698
9/25/21
2:56
BRF
Trichlorofluoromethane (Freon 11)
0.23
0.14
0.014
1.3
0.78
0.078
0.698
9/25/21
2:56
BRF
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
0.12
0.14
0.012
L-05,1 0.92
1.1
0.095
0.698
9/25/21
2:56
BRF
1,2,4-Trimethylbenzene
ND
0.035
0.010
ND
0.17
0.051
0.698
9/25/21
2:56
BRF
1,3,5-Trimethylbenzene
ND
0.035
0.0096
ND
0.17
0.047
0.698
9/25/21
2:56
BRF
Vinyl Acetate
ND
0.70
0.065
ND
2.5
0.23
0.698
9/25/21
2:56
BRF
Vinyl Chloride
ND
0.035
0.014
ND
0.089
0.035
0.698
9/25/21
2:56
BRF
m&p-Xylene
0.19
0.070
0.019
0.81
0.30
0.084
0.698
9/25/21
2:56
BRF
o-Xylene
0.080
0.035
0.0093
0.35
0.15
0.041
0.698
9/25/21
2:56
BRF
Surrogates
4-Bromofluorobenzene (1)
4-Bromofluorobenzene (1)
% Recovery
% REC Limits
101 70-130
100 70-130
9/28/21 2:16
9/25/21 2:56
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: Raleigh, NC
Date Received: 9/15/2021
Field Sample #: IA-CN-2
Sample ID: 21I0797-02
Sample Matrix: Indoor air
Sampled: 9/13/2021 14:14
Sample Description/Location:
Sub Description/Location:
Canister ID: 1617
Canister Size: 6 liter
Flow Controller ID: 3428
Sample Type: 8 hr
Work Order: 21I0797
Initial Vacuum(in Hg): -30
Final Vacuum(in Hg): -7
Receipt Vacuum(in Hg): -6.9
Flow Controller Type: Fixed -Orifice
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv
ug/m3
Date/Time
Analyte
Results
RL
MDL
Flag/Qual
Results
RI
MDL
Dilution
Analyzed
Analyst
Acetone
9.5
1.4
0.84
23
3.3
2.0
0.698
9/25/21
4:09
BRF
Benzene
0.16
0.035
0.0084
0.53
0.11
0.027
0.698
9/25/21
4:09
BRF
Benzyl chloride
ND
0.035
0.016
ND
0.18
0.081
0.698
9/25/21
4:09
BRF
Bromodichloromethane
ND
0.035
0.013
ND
0.23
0.085
0.698
9/25/21
4:09
BRF
Bromoform
ND
0.070
0.013
ND
0.72
0.13
0.698
9/25/21
4:09
BRF
Bromomethane
ND
0.035
0.028
ND
0.14
0.11
0.698
9/25/21
4:09
BRF
1,3-Butadiene
ND
0.035
0.024
ND
0.077
0.054
0.698
9/25/21
4:09
BRF
2-Butanone (MEK)
0.73
1.4
0.12
J
2.1
4.1
0.34
0.698
9/25/21
4:09
BRF
Carbon Disulfide
ND
0.35
0.089
ND
1.1
0.28
0.698
9/25/21
4:09
BRF
Carbon Tetrachloride
0.10
0.035
0.011
0.63
0.22
0.066
0.698
9/25/21
4:09
BRF
Chlorobenzene
ND
0.035
0.010
ND
0.16
0.048
0.698
9/25/21
4:09
BRF
Chloroethane
ND
0.035
0.025
ND
0.092
0.067
0.698
9/25/21
4:09
BRF
Chloroform
0.041
0.035
0.0084
0.20
0.17
0.041
0.698
9/25/21
4:09
BRF
Chloromethane
1.3
0.070
0.014
2.6
0.14
0.030
0.698
9/25/21
4:09
BRF
Cyclohexane
ND
0.035
0.023
ND
0.12
0.079
0.698
9/25/21
4:09
BRF
Dibromochloromethane
ND
0.035
0.012
ND
0.30
0.100
0.698
9/25/21
4:09
BRF
1,2-Dibromoethane (EDB)
ND
0.035
0.0098
ND
0.27
0.075
0.698
9/25/21
4:09
BRF
1,2-Dichlorobenzene
ND
0.035
0.013
ND
0.21
0.078
0.698
9/25/21
4:09
BRF
1,3-Dichlorobenzene
ND
0.035
0.0084
ND
0.21
0.051
0.698
9/25/21
4:09
BRF
1,4-Dichlorobenzene
ND
0.035
0.014
ND
0.21
0.085
0.698
9/25/21
4:09
BRF
Dichlorodifluoromethane (Freon 12)
0.49
0.035
0.011
2.4
0.17
0.053
0.698
9/25/21
4:09
BRF
1,1-Dichloroethane
ND
0.035
0.012
ND
0.14
0.047
0.698
9/25/21
4:09
BRF
1,2-Dichloroethane
ND
0.035
0.013
ND
0.14
0.052
0.698
9/25/21
4:09
BRF
1,1-Dichloroethylene
ND
0.035
0.014
ND
0.14
0.054
0.698
9/25/21
4:09
BRF
cis-1,2-Dichloroethylene
ND
0.035
0.012
ND
0.14
0.047
0.698
9/25/21
4:09
BRF
trans-1,2-Dichloroethylene
ND
0.035
0.012
ND
0.14
0.048
0.698
9/25/21
4:09
BRF
1,2-Dichloropropane
ND
0.035
0.013
ND
0.16
0.058
0.698
9/25/21
4:09
BRF
cis- 1,3 -Dichloropropene
ND
0.035
0.016
ND
0.16
0.073
0.698
9/25/21
4:09
BRF
trans- 1, 3 -Dichloropropene
ND
0.035
0.011
ND
0.16
0.049
0.698
9/25/21
4:09
BRF
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)
ND
0.035
0.012
ND
0.24
0.084
0.698
9/25/21
4:09
BRF
1,4-Dioxane
ND
0.35
0.024
ND
1.3
0.085
0.698
9/25/21
4:09
BRF
Ethanol
87
8.0
2.4
160
15
4.6
4
9/28/21
2:46
BRF
Ethyl Acetate
ND
0.35
0.21
ND
1.3
0.75
0.698
9/25/21
4:09
BRF
Ethylbenzene
0.061
0.035
0.0090
0.26
0.15
0.039
0.698
9/25/21
4:09
BRF
4-Ethyltoluene
ND
0.035
0.011
ND
0.17
0.053
0.698
9/25/21
4:09
BRF
Heptane
ND
0.035
0.014
ND
0.14
0.059
0.698
9/25/21
4:09
BRF
Hexachlorobutadiene
ND
0.035
0.019
ND
0.37
0.21
0.698
9/25/21
4:09
BRF
Hexane
0.26
1.4
0.11
J
0.91
4.9
0.40
0.698
9/25/21
4:09
BRF
2-Hexanone (MBK)
ND
0.035
0.018
ND
0.14
0.072
0.698
9/25/21
4:09
BRF
Isopropanol
1.2
1.4
0.32
J
2.9
3.4
0.79
0.698
9/25/21
4:09
BRF
Methyl tert-Butyl Ether (MTBE)
ND
0.035
0.014
ND
0.13
0.050
0.698
9/25/21
4:09
BRF
Methylene Chloride
0.30
0.35
0.080
J
1.0
1.2
0.28
0.698
9/25/21
4:09
BRF
4-Methyl-2-pentanone (MIBK)
ND
0.035
0.018
ND
0.14
0.073
0.698
9/25/21
4:09
BRF
Naphthalene
0.051
0.035
0.022
V-35
0.27
0.18
0.12
0.698
9/25/21
4:09
BRF
Propene
ND
1.4
0.12
ND
2.4
0.20
0.698
9/25/21
4:09
BRF
Styrene
0.16
0.035
0.011
0.66
0.15
0.047
0.698
9/25/21
4:09
BRF
1,1,2,2-Tetrachloroethane
ND
0.035
0.011
ND
0.24
0.073
0.698
9/25/21
4:09
BRF
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: Raleigh, NC
Sample Description/Location:
Work Order: 2110797
Date Received: 9/15/2021
Sub Description/Location:
Initial Vacuum(in Hg): -30
Field Sample #: IA-CN-2
Canister ID: 1617
Final Vacuum(in Hg): -7
Sample ID: 21I0797-02
Canister Size: 6 liter
Receipt Vacuum(in Hg): -6.9
Sample Matrix: Indoor air
Flow Controller ID: 3428
Flow Controller Type: Fixed -Orifice
Sampled: 9/13/2021 14:14
Sample Type: 8 hr
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv
ug/m3
Date/Time
Analyte
Results
RL
MDL
Flag/Qual Results
RL
MDL
Dilution
Analyzed
Analyst
Tetrachloroethylene
0.021
0.035
0.010
J 0.14
0.24
0.070
0.698
9/25/21
4:09
BRF
Tetrahydrofuran
0.15
0.35
0.086
J 0.44
1.0
0.25
0.698
9/25/21
4:09
BRF
Toluene
0.51
0.035
0.015
1.9
0.13
0.055
0.698
9/25/21
4:09
BRF
1,2,4-Trichlorobenzene
ND
0.035
0.024
ND
0.26
0.18
0.698
9/25/21
4:09
BRF
1, 1, 1 -Trichloroethane
ND
0.035
0.016
ND
0.19
0.088
0.698
9/25/21
4:09
BRF
1,1,2-Trichloroethane
ND
0.035
0.014
ND
0.19
0.076
0.698
9/25/21
4:09
BRF
Trichloroethylene
ND
0.035
0.013
ND
0.19
0.069
0.698
9/25/21
4:09
BRF
Trichlorofluoromethane (Freon 11)
0.24
0.14
0.014
1.3
0.78
0.078
0.698
9/25/21
4:09
BRF
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
0.12
0.14
0.012
L-05, J 0.92
1.1
0.095
0.698
9/25/21
4:09
BRF
1,2,4-Trimethylbenzene
0.061
0.035
0.010
0.30
0.17
0.051
0.698
9/25/21
4:09
BRF
1,3,5-Trimethylbenzene
0.020
0.035
0.0096
V-06, J 0.099
0.17
0.047
0.698
9/25/21
4:09
BRF
Vinyl Acetate
ND
0.70
0.065
ND
2.5
0.23
0.698
9/25/21
4:09
BRF
Vinyl Chloride
ND
0.035
0.014
ND
0.089
0.035
0.698
9/25/21
4:09
BRF
m&p-Xylene
0.19
0.070
0.019
0.81
0.30
0.084
0.698
9/25/21
4:09
BRF
o-Xylene
0.076
0.035
0.0093
0.33
0.15
0.041
0.698
9/25/21
4:09
BRF
Surrogates
% Recovery
% REC Limits
4-Bromofluorobenzene (1)
102
70-130
9/28/21
2:46
4-Bromofluorobenzene (1)
105
70-130
9/25/21
4:09
Page 8 of 26

Con -test®
A Pace Analytical® Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Raleigh, NC
Date Received: 9/15/2021
Field Sample #: IA-CN-2-DUP
Sample ID: 21I0797-03
Sample Matrix: Indoor air
Sampled: 9/13/2021 14:13
Sample Description/Location:
Sub Description/Location:
Canister ID: 2183
Canister Size: 6 liter
Flow Controller ID: 3611
Sample Type: 8 hr
Work Order: 21I0797
Initial Vacuum(in Hg): -29
Final Vacuum(in Hg): -6
Receipt Vacuum(in Hg): -6
Flow Controller Type: Fixed -Orifice
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv
ug/m3
Date/Time
Analyte
Results
RL
MDL
Flag/Qual
Results
RI
MDL
Dilution
Analyzed
Analyst
Acetone
10
1.4
0.84
24
3.3
2.0
0.698
9/25/21
5:24
BRF
Benzene
0.16
0.035
0.0084
0.51
0.11
0.027
0.698
9/25/21
5:24
BRF
Benzyl chloride
ND
0.035
0.016
ND
0.18
0.081
0.698
9/25/21
5:24
BRF
Bromodichloromethane
ND
0.035
0.013
ND
0.23
0.085
0.698
9/25/21
5:24
BRF
Bromoform
ND
0.070
0.013
ND
0.72
0.13
0.698
9/25/21
5:24
BRF
Bromomethane
ND
0.035
0.028
ND
0.14
0.11
0.698
9/25/21
5:24
BRF
1,3-Butadiene
ND
0.035
0.024
ND
0.077
0.054
0.698
9/25/21
5:24
BRF
2-Butanone (MEK)
1.1
1.4
0.12
J
3.4
4.1
0.34
0.698
9/25/21
5:24
BRF
Carbon Disulfide
ND
0.35
0.089
ND
1.1
0.28
0.698
9/25/21
5:24
BRF
Carbon Tetrachloride
0.090
0.035
0.011
0.57
0.22
0.066
0.698
9/25/21
5:24
BRF
Chlorobenzene
ND
0.035
0.010
ND
0.16
0.048
0.698
9/25/21
5:24
BRF
Chloroethane
ND
0.035
0.025
ND
0.092
0.067
0.698
9/25/21
5:24
BRF
Chloroform
0.025
0.035
0.0084
J
0.12
0.17
0.041
0.698
9/25/21
5:24
BRF
Chloromethane
0.49
0.070
0.014
1.0
0.14
0.030
0.698
9/25/21
5:24
BRF
Cyclohexane
ND
0.035
0.023
ND
0.12
0.079
0.698
9/25/21
5:24
BRF
Dibromochloromethane
ND
0.035
0.012
ND
0.30
0.100
0.698
9/25/21
5:24
BRF
1,2-Dibromoethane (EDB)
ND
0.035
0.0098
ND
0.27
0.075
0.698
9/25/21
5:24
BRF
1,2-Dichlorobenzene
ND
0.035
0.013
ND
0.21
0.078
0.698
9/25/21
5:24
BRF
1,3-Dichlorobenzene
ND
0.035
0.0084
ND
0.21
0.051
0.698
9/25/21
5:24
BRF
1,4-Dichlorobenzene
ND
0.035
0.014
ND
0.21
0.085
0.698
9/25/21
5:24
BRF
Dichlorodifluoromethane (Freon 12)
0.53
0.035
0.011
2.6
0.17
0.053
0.698
9/25/21
5:24
BRF
1,1-Dichloroethane
ND
0.035
0.012
ND
0.14
0.047
0.698
9/25/21
5:24
BRF
1,2-Dichloroethane
ND
0.035
0.013
ND
0.14
0.052
0.698
9/25/21
5:24
BRF
1,1-Dichloroethylene
ND
0.035
0.014
ND
0.14
0.054
0.698
9/25/21
5:24
BRF
cis-1,2-Dichloroethylene
ND
0.035
0.012
ND
0.14
0.047
0.698
9/25/21
5:24
BRF
trans-1,2-Dichloroethylene
ND
0.035
0.012
ND
0.14
0.048
0.698
9/25/21
5:24
BRF
1,2-Dichloropropane
ND
0.035
0.013
ND
0.16
0.058
0.698
9/25/21
5:24
BRF
cis- 1,3 -Dichloropropene
ND
0.035
0.016
ND
0.16
0.073
0.698
9/25/21
5:24
BRF
trans- 1, 3 -Dichloropropene
ND
0.035
0.011
ND
0.16
0.049
0.698
9/25/21
5:24
BRF
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)
ND
0.035
0.012
ND
0.24
0.084
0.698
9/25/21
5:24
BRF
1,4-Dioxane
ND
0.35
0.024
ND
1.3
0.085
0.698
9/25/21
5:24
BRF
Ethanol
83
8.0
2.4
160
15
4.6
4
9/28/21
3:17
BRF
Ethyl Acetate
ND
0.35
0.21
ND
1.3
0.75
0.698
9/25/21
5:24
BRF
Ethylbenzene
0.048
0.035
0.0090
0.21
0.15
0.039
0.698
9/25/21
5:24
BRF
4-Ethyltoluene
ND
0.035
0.011
ND
0.17
0.053
0.698
9/25/21
5:24
BRF
Heptane
0.095
0.035
0.014
0.39
0.14
0.059
0.698
9/25/21
5:24
BRF
Hexachlorobutadiene
ND
0.035
0.019
ND
0.37
0.21
0.698
9/25/21
5:24
BRF
Hexane
0.31
1.4
0.11
J
1.1
4.9
0.40
0.698
9/25/21
5:24
BRF
2-Hexanone (MBK)
ND
0.035
0.018
ND
0.14
0.072
0.698
9/25/21
5:24
BRF
Isopropanol
1.4
1.4
0.32
3.4
3.4
0.79
0.698
9/25/21
5:24
BRF
Methyl tert-Butyl Ether (MTBE)
ND
0.035
0.014
ND
0.13
0.050
0.698
9/25/21
5:24
BRF
Methylene Chloride
0.70
0.35
0.080
2.4
1.2
0.28
0.698
9/25/21
5:24
BRF
4-Methyl-2-pentanone (MIBK)
ND
0.035
0.018
ND
0.14
0.073
0.698
9/25/21
5:24
BRF
Naphthalene
0.036
0.035
0.022
V-35
0.19
0.18
0.12
0.698
9/25/21
5:24
BRF
Propene
ND
1.4
0.12
ND
2.4
0.20
0.698
9/25/21
5:24
BRF
Styrene
0.13
0.035
0.011
0.53
0.15
0.047
0.698
9/25/21
5:24
BRF
1,1,2,2-Tetrachloroethane
ND
0.035
0.011
ND
0.24
0.073
0.698
9/25/21
5:24
BRF
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: Raleigh, NC
Sample Description/Location:
Work Order: 2110797
Date Received: 9/15/2021
Sub Description/Location:
Initial Vacuum(in Hg): -29
Field Sample #: IA-CN-2-DUP
Canister ID: 2183
Final Vacuum(in Hg): -6
Sample ID: 21I0797-03
Canister Size: 6 liter
Receipt Vacuum(in Hg): -6
Sample Matrix: Indoor air
Flow Controller ID: 3611
Flow Controller Type: Fixed -Orifice
Sampled: 9/13/2021 14:13
Sample Type: 8 hr
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv
ug/m3
Date/Time
Analyte
Results
RL
MDL
Flag/Qual Results
RL
MDL
Dilution
Analyzed
Analyst
Tetrachloroethylene
0.018
0.035
0.010
J 0.12
0.24
0.070
0.698
9/25/21
5:24
BRF
Tetrahydrofuran
ND
0.35
0.086
ND
1.0
0.25
0.698
9/25/21
5:24
BRF
Toluene
0.43
0.035
0.015
1.6
0.13
0.055
0.698
9/25/21
5:24
BRF
1,2,4-Trichlorobenzene
ND
0.035
0.024
ND
0.26
0.18
0.698
9/25/21
5:24
BRF
1, 1, 1 -Trichloroethane
ND
0.035
0.016
ND
0.19
0.088
0.698
9/25/21
5:24
BRF
1,1,2-Trichloroethane
ND
0.035
0.014
ND
0.19
0.076
0.698
9/25/21
5:24
BRF
Trichloroethylene
ND
0.035
0.013
ND
0.19
0.069
0.698
9/25/21
5:24
BRF
Trichlorofluoromethane (Freon 11)
0.23
0.14
0.014
1.3
0.78
0.078
0.698
9/25/21
5:24
BRF
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
0.12
0.14
0.012
L-05, J 0.91
1.1
0.095
0.698
9/25/21
5:24
BRF
1,2,4-Trimethylbenzene
ND
0.035
0.010
ND
0.17
0.051
0.698
9/25/21
5:24
BRF
1,3,5-Trimethylbenzene
ND
0.035
0.0096
ND
0.17
0.047
0.698
9/25/21
5:24
BRF
Vinyl Acetate
ND
0.70
0.065
ND
2.5
0.23
0.698
9/25/21
5:24
BRF
Vinyl Chloride
ND
0.035
0.014
ND
0.089
0.035
0.698
9/25/21
5:24
BRF
m&p-Xylene
0.16
0.070
0.019
0.68
0.30
0.084
0.698
9/25/21
5:24
BRF
o-Xylene
0.077
0.035
0.0093
0.34
0.15
0.041
0.698
9/25/21
5:24
BRF
Surrogates
% Recovery
% REC Limits
4-Bromofluorobenzene (1)
98.8
70-130
9/28/21
3:17
4-Bromofluorobenzene (1)
104
70-130
9/25/21
5:24
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: Raleigh, NC
Date Received: 9/15/2021
Field Sample #: Ambient Air
Sample ID: 21I0797-04
Sample Matrix: Indoor air
Sampled: 9/13/2021 14:09
Sample Description/Location:
Sub Description/Location:
Canister ID: 2177
Canister Size: 6 liter
Flow Controller ID: 3697
Sample Type: 8 hr
Work Order: 21I0797
Initial Vacuum(in Hg): -28.5
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -0.7
Flow Controller Type: Fixed -Orifice
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv
ug/m3
Date/Time
Analyte
Results
RL
MDL
Flag/Qual
Results
RI
MDL
Dilution
Analyzed
Analyst
Acetone
9.0
1.4
0.84
21
3.3
2.0
0.698
9/25/21
6:41
BRF
Benzene
0.16
0.035
0.0084
0.52
0.11
0.027
0.698
9/25/21
6:41
BRF
Benzyl chloride
ND
0.035
0.016
ND
0.18
0.081
0.698
9/25/21
6:41
BRF
Bromodichloromethane
ND
0.035
0.013
ND
0.23
0.085
0.698
9/25/21
6:41
BRF
Bromoform
ND
0.070
0.013
ND
0.72
0.13
0.698
9/25/21
6:41
BRF
Bromomethane
ND
0.035
0.028
ND
0.14
0.11
0.698
9/25/21
6:41
BRF
1,3-Butadiene
ND
0.035
0.024
ND
0.077
0.054
0.698
9/25/21
6:41
BRF
2-Butanone (MEK)
0.80
1.4
0.12
J
2.4
4.1
0.34
0.698
9/25/21
6:41
BRF
Carbon Disulfide
ND
0.35
0.089
ND
1.1
0.28
0.698
9/25/21
6:41
BRF
Carbon Tetrachloride
0.082
0.035
0.011
0.51
0.22
0.066
0.698
9/25/21
6:41
BRF
Chlorobenzene
ND
0.035
0.010
ND
0.16
0.048
0.698
9/25/21
6:41
BRF
Chloroethane
ND
0.035
0.025
ND
0.092
0.067
0.698
9/25/21
6:41
BRF
Chloroform
0.042
0.035
0.0084
0.20
0.17
0.041
0.698
9/25/21
6:41
BRF
Chloromethane
0.58
0.070
0.014
1.2
0.14
0.030
0.698
9/25/21
6:41
BRF
Cyclohexane
ND
0.035
0.023
ND
0.12
0.079
0.698
9/25/21
6:41
BRF
Dibromochloromethane
ND
0.035
0.012
ND
0.30
0.100
0.698
9/25/21
6:41
BRF
1,2-Dibromoethane (EDB)
ND
0.035
0.0098
ND
0.27
0.075
0.698
9/25/21
6:41
BRF
1,2-Dichlorobenzene
ND
0.035
0.013
ND
0.21
0.078
0.698
9/25/21
6:41
BRF
1,3-Dichlorobenzene
ND
0.035
0.0084
ND
0.21
0.051
0.698
9/25/21
6:41
BRF
1,4-Dichlorobenzene
ND
0.035
0.014
ND
0.21
0.085
0.698
9/25/21
6:41
BRF
Dichlorodifluoromethane (Freon 12)
0.49
0.035
0.011
2.4
0.17
0.053
0.698
9/25/21
6:41
BRF
1,1-Dichloroethane
ND
0.035
0.012
ND
0.14
0.047
0.698
9/25/21
6:41
BRF
1,2-Dichloroethane
ND
0.035
0.013
ND
0.14
0.052
0.698
9/25/21
6:41
BRF
1,1-Dichloroethylene
ND
0.035
0.014
ND
0.14
0.054
0.698
9/25/21
6:41
BRF
cis-1,2-Dichloroethylene
ND
0.035
0.012
ND
0.14
0.047
0.698
9/25/21
6:41
BRF
trans-1,2-Dichloroethylene
0.015
0.035
0.012
J
0.061
0.14
0.048
0.698
9/25/21
6:41
BRF
1,2-Dichloropropane
ND
0.035
0.013
ND
0.16
0.058
0.698
9/25/21
6:41
BRF
cis- 1,3 -Dichloropropene
ND
0.035
0.016
ND
0.16
0.073
0.698
9/25/21
6:41
BRF
trans- 1, 3 -Dichloropropene
ND
0.035
0.011
ND
0.16
0.049
0.698
9/25/21
6:41
BRF
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)
ND
0.035
0.012
ND
0.24
0.084
0.698
9/25/21
6:41
BRF
1,4-Dioxane
ND
0.35
0.024
ND
1.3
0.085
0.698
9/25/21
6:41
BRF
Ethanol
39
4.0
1.2
73
7.5
2.3
2
9/28/21
3:48
BRF
Ethyl Acetate
1.7
0.35
0.21
6.1
1.3
0.75
0.698
9/25/21
6:41
BRF
Ethylbenzene
0.084
0.035
0.0090
0.36
0.15
0.039
0.698
9/25/21
6:41
BRF
4-Ethyltoluene
ND
0.035
0.011
ND
0.17
0.053
0.698
9/25/21
6:41
BRF
Heptane
0.15
0.035
0.014
0.63
0.14
0.059
0.698
9/25/21
6:41
BRF
Hexachlorobutadiene
ND
0.035
0.019
ND
0.37
0.21
0.698
9/25/21
6:41
BRF
Hexane
ND
1.4
0.11
ND
4.9
0.40
0.698
9/25/21
6:41
BRF
2-Hexanone (MBK)
ND
0.035
0.018
ND
0.14
0.072
0.698
9/25/21
6:41
BRF
Isopropanol
10
1.4
0.32
25
3.4
0.79
0.698
9/25/21
6:41
BRF
Methyl tert-Butyl Ether (MTBE)
ND
0.035
0.014
ND
0.13
0.050
0.698
9/25/21
6:41
BRF
Methylene Chloride
0.21
0.35
0.080
J
0.74
1.2
0.28
0.698
9/25/21
6:41
BRF
4-Methyl-2-pentanone (MIBK)
ND
0.035
0.018
ND
0.14
0.073
0.698
9/25/21
6:41
BRF
Naphthalene
0.045
0.035
0.022
V-35
0.24
0.18
0.12
0.698
9/25/21
6:41
BRF
Propene
ND
1.4
0.12
ND
2.4
0.20
0.698
9/25/21
6:41
BRF
Styrene
0.068
0.035
0.011
0.29
0.15
0.047
0.698
9/25/21
6:41
BRF
1,1,2,2-Tetrachloroethane
ND
0.035
0.011
ND
0.24
0.073
0.698
9/25/21
6:41
BRF
Page 11 of 26

Con -test®
A Pace Analytical® Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Raleigh, NC
Sample Description/Location:
Work Order: 2110797
Date Received: 9/15/2021
Sub Description/Location:
Initial Vacuum(in Hg): -28.5
Field Sample #: Ambient Air
Canister ID: 2177
Final Vacuum(in Hg): -5
Sample ID: 21I0797-04
Canister Size: 6 liter
Receipt Vacuum(in Hg): -0.7
Sample Matrix: Indoor air
Flow Controller ID: 3697
Flow Controller Type: Fixed -Orifice
Sampled: 9/13/2021 14:09
Sample Type: 8 hr
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv
ug/m3
Date/Time
Analyte
Results
RL
MDL
Flag/Qual Results
RL
MDL
Dilution
Analyzed
Analyst
Tetrachloroethylene
0.046
0.035
0.010
0.31
0.24
0.070
0.698
9/25/21
6:41
BRF
Tetrahydrofuran
ND
0.35
0.086
ND
1.0
0.25
0.698
9/25/21
6:41
BRF
Toluene
0.53
0.035
0.015
2.0
0.13
0.055
0.698
9/25/21
6:41
BRF
1,2,4-Trichlorobenzene
ND
0.035
0.024
ND
0.26
0.18
0.698
9/25/21
6:41
BRF
1, 1, 1 -Trichloroethane
ND
0.035
0.016
ND
0.19
0.088
0.698
9/25/21
6:41
BRF
1,1,2-Trichloroethane
ND
0.035
0.014
ND
0.19
0.076
0.698
9/25/21
6:41
BRF
Trichloroethylene
ND
0.035
0.013
ND
0.19
0.069
0.698
9/25/21
6:41
BRF
Trichlorofluoromethane (Freon 11)
0.24
0.14
0.014
1.4
0.78
0.078
0.698
9/25/21
6:41
BRF
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
0.10
0.14
0.012
L-05, J 0.79
1.1
0.095
0.698
9/25/21
6:41
BRF
1,2,4-Trimethylbenzene
0.12
0.035
0.010
0.61
0.17
0.051
0.698
9/25/21
6:41
BRF
1,3,5-Trimethylbenzene
0.027
0.035
0.0096
V-06, J 0.13
0.17
0.047
0.698
9/25/21
6:41
BRF
Vinyl Acetate
ND
0.70
0.065
ND
2.5
0.23
0.698
9/25/21
6:41
BRF
Vinyl Chloride
ND
0.035
0.014
ND
0.089
0.035
0.698
9/25/21
6:41
BRF
m&p-Xylene
0.25
0.070
0.019
1.1
0.30
0.084
0.698
9/25/21
6:41
BRF
o-Xylene
0.12
0.035
0.0093
0.50
0.15
0.041
0.698
9/25/21
6:41
BRF
Surrogates
% Recovery
% REC Limits
4-Bromofluorobenzene (1)
99.3
70-130
9/28/21
3:48
4-Bromofluorobenzene (1)
102
70-130
9/25/21
6:41
Page 12 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
Pre-Dil
Pre-Dil
Default
Actual
Pressure
Pre
Initial
Final
Injection
Injection
Lab Number [Field ID]
Batch
Dilution
Dilution
mL
mL
mL
mL
Date
2110797-01 [IA-CN-1]
B291074
1.5
1
N/A
1000
200
430
09/24/21
21I0797-02 [IA-CN-2]
B291074
1.5
1
N/A
1000
200
430
09/24/21
21I0797-03 [IA-CN-2-DUP]
B291074
1.5
1
N/A
1000
200
430
09/24/21
21I0797-04 [Ambient Air]
B291074
1.5
1
N/A
1000
200
430
09/24/21
Prep Method: TO-15 Prep -EPA TO-15
Pre-Dil
Pre-Dil
Default
Actual
Pressure
Pre
Initial
Final
Injection
Injection
Lab Number [Field ID]
Batch
Dilution
Dilution
mL
mL
mL
mL
Date
21I0797-OIRE1 [IA-CN-1]
B291196
1.5
1
N/A
1000
200
75
09/27/21
2110797-02RE1 [IA-CN-2]
B291196
1.5
1
N/A
1000
200
75
09/27/21
21I0797-03RE1 [IA-CN-2-DUP]
B291196
1.5
1
N/A
1000
200
75
09/27/21
21I0797-04RE1 [Ambient Air]
B291196
1.5
1
N/A
1000
200
150
09/27/21
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 B291074 - TO-15 Prep
Blank (B291074-BLK1)
Prepared & Analyzed: 09/24/21
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
1,4-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
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
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 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 B291074 - TO-15 Prep
Blank (B291074-BLKI)
Prepared & Analyzed: 09/24/21
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
Vinyl Chloride
ND
0.020
m&p-Xylene
ND
0.040
o-Xylene
ND
0.020
Surrogate: 4-Bromofluorobenzene (1)
LCS (B291074-BSI)
8.03
8.00 100
Prepared & Analyzed: 09/24/21
70-130
Acetone
5.19
5.00
104
70-130
Benzene
5.44
5.00
109
70-130
Benzyl chloride
7.06
5.00
141 *
70-130 L-01
Bromodichloromethane
5.40
5.00
108
70-130
Bromoform
5.66
5.00
113
70-130
Bromomethane
6.23
5.00
125
70-130 V-20
1,3-Butadiene
5.14
5.00
103
70-130
2-Butanone (MEK)
4.89
5.00
97.8
70-130
Carbon Disulfide
6.77
5.00
135 *
70-130 L-01, V-20
Carbon Tetrachloride
5.33
5.00
107
70-130
Chlorobenzene
4.90
5.00
98.1
70-130
Chloroethane
5.84
5.00
117
70-130
Chloroform
5.53
5.00
ill
70-130
Chloromethane
5.08
5.00
102
70-130
Cyclohexane
5.45
5.00
109
70-130
Dibromochloromethane
5.25
5.00
105
70-130
1,2-Dibromoethane (EDB)
5.10
5.00
102
70-130
1,2-Dichlorobenzene
5.82
5.00
116
70-130
1,3-Dichlorobenzene
5.93
5.00
119
70-130
1,4-Dichlorobenzene
5.30
5.00
106
70-130
Dichlorodifluoromethane (Freon 12)
5.73
5.00
115
70-130
1,1-Dichloroethane
5.56
5.00
ill
70-130
1,2-Dichloroethane
5.18
5.00
104
70-130
1,1-Dichloroethylene
5.41
5.00
108
70-130
cis-1,2-Dichloroethylene
5.49
5.00
110
70-130
trans-1,2-Dichloroethylene
5.35
5.00
107
70-130
1,2-Dichloropropane
5.05
5.00
101
70-130
Page 15 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 B291074 - TO-15 Prep
LCS (B291074-BS1)
Prepared & Analyzed: 09/24/21
cis-1,3-Dichloropropene
6.06
5.00
121
70-130
trans-1,3-Dichloropropene
5.45
5.00
109
70-130
1,2-Dichloro- 1, 1,2,2-tetrafluoroethane
5.29
5.00
106
70-130
(Freon 114)
1,4-Dioxane
6.23
5.00
125
70-130
Ethanol
6.64
5.00
133
* 70-130
L-Of
Ethyl Acetate
3.85
5.00
77.1
70-130
Ethylbenzene
5.12
5.00
102
70-130
4-Ethyltoluene
5.66
5.00
113
70-130
Heptane
4.57
5.00
91.5
70-130
Hexachlorobutadiene
5.47
5.00
109
70-130
Hexane
5.26
5.00
105
70-130
2-Hexanone (MBK)
5.15
5.00
103
70-130
Isopropanol
4.80
5.00
96.1
70-130
Methyl tert-Butyl Ether (MTBE)
5.29
5.00
106
70-130
Methylene Chloride
5.20
5.00
104
70-130
4-Methyl-2-pentanone (MIBK)
5.42
5.00
108
70-130
Naphthalene
5.84
5.00
117
70-130
V-3'-
Propene
5.26
5.00
105
70-130
Styrene
5.65
5.00
113
70-130
1,1,2,2-Tetrachloroethane
5.27
5.00
105
70-130
Tetrachloroethylene
5.34
5.00
107
70-130
Tetrahydrofuran
4.96
5.00
99.2
70-130
Toluene
4.93
5.00
98.6
70-130
1,2,4-Trichlorobenzene
5.92
5.00
118
70-130
1, 1, 1 -Trichloroethane
5.42
5.00
108
70-130
1,1,2-Trichloroethane
4.70
5.00
93.9
70-130
Trichloroethylene
5.81
5.00
116
70-130
Trichlorofluoromethane (Freon 11)
5.70
5.00
114
70-130
1, 1,2-Trichloro- 1,2,2-trifluoroethane (Freon
7.22
5.00
144
* 70-130
L-Of
113)
1,2,4-Trimethylbenzene
5.42
5.00
108
70-130
1,3,5-Trimethylbenzene
5.41
5.00
108
70-130
Vinyl Acetate
7.22
5.00
144
* 70-130
L-01, V-3(
Vinyl Chloride
5.86
5.00
117
70-130
m&p-Xylene
10.4
10.0
104
70-130
o-Xylene
5.37
5.00
107
70-130
Surrogate: 4-Bromofluorobenzene (1) 8.47 8.00 106 70-130
Page 16 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
Analyte Results RL Results RL ppbv Result %REC Limits RPD Limit Flag/Qual
Batch B291196 - TO-15 Prep
Blank (B291196-BLK1) Prepared & Analyzed: 09/27/21
Ethanol ND 0.80
Surrogate: 4-Bromofluorobenzene (1) 8.35 8.00 104 70-130
LCS (B291196-BS1) Prepared & Analyzed: 09/27/21
Ethanol 6.40 5.00 128 70-130
Surrogate: 4-Bromofluorobenzene (1) 8.88 8.00 111 70-130
Page 17 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-01 Laboratory fortified blank/laboratory control sample recovery outside of control limits. Data validation is not
affected since all results are "not detected" for all samples in this batch for this compound and bias is on the high
side.
L-05 Laboratory fortified blank/laboratory control sample recovery is outside of control limits. Reported value for this
compound is likely to be biased on the high side.
V-06 Continuing calibration verification (CCV) did not meet method specifications and was biased on the high side for
this compound.
V-20 Continuing calibration verification (CCV) did not meet method specifications and was biased on the high side.
Data validation is not affected since sample result was "not detected" for this compound.
V-35 Initial calibration verification (ICV) did not meet method specifications and was biased on the high side for this
compound. Reported result is estimated.
V-36 Initial calibration verification (ICV) did not meet method specifications and was biased on the high side. Data
validation is not affected since sample result was "not detected" for this compound.
Page 18 of 26

Con -test®
A Pace Analytical® Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
RLF Rebecca Faust
RAP Raisa A. Petraitis
KKM Kerry K. McGee
BRF Brittany R. Fisk
ANALYST
Page 19 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 o/
Limits
RT Diff
RT Diff
Limit
Q
IA-CN-1 (2110797-01) Lab File ID: K21A267030.D Analyzed: 09/25/21 02:56
Bromochloromethane (1)
56603
2.999
60 - 140
2.9990
+/-0.50
1,4-Difluorobenzene(1)
149862
3.598
60-140
3.5980
+/-0.50
Chlorobenzene-d5(1)
146908
5.188
60-140
5.1880
+/-0.50
IA-CN-2 (21I0797-02) Lab File ID: K21A267032.D Analyzed: 09/25/21 04:09
Bromochloromethane (1)
57075
2.995
60 - 140
2.9950
+/-0.50
1,4-Difluorobenzene(1)
157200
3.598
60-140
3.5980
+/-0.50
Chlorobenzene-d5(1)
130556
5.188
60-140
5.1880
+/-0.50
IA-CN-2-DUP (21I0797-03) Lab File ID: K21A267034.D Analyzed: 09/25/21 05:24
Bromochloromethane (1)
55458
2.995
60 - 140
2.9950
+/-0.50
1,4-Difluorobenzene (1)
161068
3.598
60 - 140
3.5980
+/-0.50
Chlorobenzene-d5 (1)
147229
5.185
60 - 140
5.1850
+/-0.50
Ambient Air (21I0797-04) Lab File ID: K21A267036.D Analyzed: 09/25/21 06:41
Bromochloromethane (1)
54383
2.992
60 - 140
2.9920
+/-0.50
1,4-Difluorobenzene(1)
169582
3.595
60-140
3.5950
+/-0.50
Chlorobenzene-d5(1)
140835
5.188
60-140
5.1880
+/-0.50
INTERNAL STANDARD AREA AND RT SUMMARY
EPA TO-15
Internal Standard
Response
RT
Reference
Response
Reference
RT
Area %
Area %
Limits
RT Diff
RT Diff
Limit
Q
IA-CN-1 (21I0797-01RE1) Lab File ID: K21A270024.D Analyzed: 09/28/21 02:16
Bromochloromethane (1)
60711
2.996
60 - 140
2.9960
+/-0.50
1,4-Difluorobenzene(1)
167101
3.598
60-140
3.5980
+/-0.50
Chlorobenzene-d5(1)
149738
5.188
60-140
5.1880
+/-0.50
IA-CN-2 (21I0797-02RE1) Lab File ID: K21A270025.D Analyzed: 09/28/21 02:46
Bromochloromethane (1)
59920
2.996
60 - 140
2.9960
+/-0.50
1,4-Difluorobenzene (1)
157915
3.598
60 - 140
3.5980
+/-0.50
Chlorobenzene-d5(1)
157183
5.188
60-140
5.1880
+/-0.50
IA-CN-2-DUP (21I0797-03RE1) Lab File ID: K21A270026.D Analyzed: 09/28/21 03:17
Bromochloromethane (1)
58030
2.995
60 - 140
2.9950
+/-0.50
1,4-Difluorobenzene(1)
154403
3.598
60-140
3.5980
+/-0.50
Chlorobenzene-d5(1)
150814
5.188
60-140
5.1880
+/-0.50
Ambient Air (21I0797-04RE1) Lab File ID: K21A270027.D Analyzed: 09/28/21 03:48
Bromochloromethane (1)
58995
2.996
60 - 140
2.9960
+/-0.50
1,4-Difluorobenzene(1)
165954
3.598
60-140
3.5980
+/-0.50
Chlorobenzene-d5(1)
144729
5.185
60-140
5.1850
+/-0.50
Page 20 of 26

Con -test®
A Pace Analytical® Laboratory
39 Spruce Street' East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
CONTINUING CALIBRATION CHECK
COMPOUND
TYPE
RESPONSE FACTOR
% DIFF / DRIFT
STD
CCV
ICAL
CCV
MIN (#)
CCV
LIMIT (#)
# 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 - ISO17025:2017
100033
03/l/2022
MA
Massachusetts DEP
M-MA100
06/30/2022
CT
Connecticut Department of Publilc Health
PH-0165
12/31/2022
NY
New York State Department of Health
10899 NELAP
04/l/2022
NH-S
New Hampshire Environmental Lab
2516 NELAP
02/5/2022
RI
Rhode Island Department of Health
LA000112
12/30/2021
NC
North Carolina Div. of Water Quality
652
12/31/2021
NJ
New Jersey DEP
MA007 NELAP
06/30/2022
FL
Florida Department of Health
E871027 NELAP
06/30/2022
VT
Vermont Department of Health Lead Laboratory
LL720741
07/30/2022
ME
State of Maine
MA00100
06/9/2023
VA
Commonwealth of Virginia
460217
12/14/2021
NH-P
New Hampshire Environmental Lab
2557 NELAP
09/6/2022
VT-DW
Vermont Department of Health Drinking Water
VT-255716
06/12/2022
NC-DW
North Carolina Department of Health
25703
07/31/2022
PA
Commonwealth of Pennsylvania DEP
68-05812
06/30/2022
MI
Dept. of Env, Great Lakes, and Energy
9100
09/6/2022
Page 23 of 26

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j Page 24 of 26 1

9/20121, 11:44 AM Deta0ed Tracking
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Local Scan Time
Monday, September 20, 2021
10:54 AM East Longmeadow, MA
Delivered
5:27 AM WIN DSOP, CT
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At local FedEx facility
Sunday, September 19, 2021
859 PM WDDLETOWN, CT
Departed FedEx location
Saturday, September 18, 2021
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Arrived at FedEx location
6:04 AM MIDDLETOWN, CT
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In transit
314 AM DURHAM, NC
Left FedEx origin facility
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I Have Not Confirmed Sample Container
Numbers With Lab Staff Before
Relinquishing Over "��Vda�Y"lC` r-�BQFi1�`�Ca�Y
Samples
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Air Media Sample Receipt Checklist - (Rejection Criteria Listing - Using Acceptance Policy) Any False
Statement will be brought to the attention of the Client - State True or False
Client �N
Received By Date ,� �i 1 Time t4 aA
How were the samples In Cooler On Ice No Ice
received? In Box Ambient Melted Ice
Were samples within Temperature By Gun #
Compliance? 2-6'C _ By Blank #a:
Was Custody Seal Intact? 1..%-'N
Was COG Relinquished ?
Are there any loose caps/valves on any samples?
Is COG in ink/ Legible? i
Did COG Include all Client --v Analysis
Pertinent Information? Project ID's
Are Sample Labels filled out and legible?
Are there Rushes? T
Samples are received within holding time?
Proper Media Used? -T
Are there Trip Blanks? V::-
T
Actual Temp -
Actual Temp -
Were Samples Tampered with?
Does Chain Agree With Samples? i
Who was notified?
Sampler Name
Collection Dates/Times 1
Individually Certified Cans? `{
Is there enough Volume? j
Page 26 of 26

APPENDIX D
SUB -SLAB SOIL GAS AND INDOOR AIR
RISK CALCULATIONS
0 Mid Atlantic

ID:
Date: June 2021
Mav 2021 EPA RSL Table
Unit ID:
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate
carcinogenic risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 99/m3.
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these
values if indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of
these chemicals are likely not associated with vapor intrusion.
All concentrations are in nv/m3
CAS #
Chemical Name:
Indoor Air
Concentration
a
(ug/m)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Hazard
Quotient
67-64-1
Acetone
24
6.5E+03
7.4E-04
71-43-2
Benzene
0.63
3.6E-01
6.3E+00
1.8E-06
2.0E-02
100-44-7
BenzylChloride
0.081
5.7E-02
2.1E-01
1.4E-06
7.8E-02
75-27-4
Bromodichloromethane
0.085
7.6E-02
1.1E-06
56-23-5
Carbon Tetrachloride
0.64
4.7E-01
2.1E+01
1.4E-06
6.1E-03
67-66-3
Chloroform
0.2
1.2E-01
2.0E+01
1.6E-06
2.0E-03
74-87-3
Chloromethane
2.6
1.9E+01
2.8E-02
106-93-4
Dibromoethane, 1,2-
0.075
4.7E-03
1.9E+00
1.6E-05
8.0E-03
75-71-8
Dichlorodifluoromethane
2.6
2.1E+01
2.5E-02
156-60-5
Dichloroeth lene, trans-1,2-
0.061
8.3E+00
1.5E-03
100-41-4
Eth lbenzene
0.29
1.1E+00
2.1E+02
2.6E-07
2.8E-04
109-99-9
-Tetrah drofuran
0.44
4.2E+02
2.1E-04
142-82-5
He tane, N-
0.39
-
8.3E+01
9.3E-04
87-68-3
Hexachlorobutadiene
0.21
1.3E-01
1.6E-06
110-54-3
Hexane, N-
1.1
-
1.5E+02
1.5E-03
67-63-0
Iso ro anol
4
4.2E+01
1.9E-02
78-93-3
Methyl Ethyl Ketone (2-Butanone)
3.4
1.0E+03
6.5E-04
75-09-2
Methylene Chloride
2.4
1.0E+02
1.3E+02
2.4E-08
3.8E-03
91-20-3
-Naphthalene
0.27
8.3E-02
6.3E-01
3.3E-06
8.6E-02
10042-5
Styrene
0.66
2.1E+02
6.3E-04
79-34-5
Tetrachloroethane, 1,1,2,2-
0.073
4.8E-02
1.5E-06
127-18-4
Tetrachloroeth lene
0.14
1.1E+01
8.3E+00
1.3E-08
3.4E-03
108-88-3
Toluene
1.9
1.0E+03
3.6E-04
76-13-1
Trichloro-1,2,2-trifluoroethane, 1,1,2-
0.92
1.0E+03
1.8E-04
79-00-5
Trichloroethane, 1,1,2-
0.076
1.8E-01
4.2E-02
4.3E-07
3.6E-01
75-69-4
Trichlorofluoromethane
1.3
95-63-6
Trimeth lbenzene, 1,2,4-
0.3
1.3E+01
4.8E-03
108-67-8
Trimeth lbenzene, 1,3,5-
0.099
1.3E+01
1.6E-03
1330-20-7
X lens
1.16
2.1E+01
1.1E-02
Cumulative: I 3.0E-05 I6.7E-01
North Carolina DEQ Risk Calculator

DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air u
Version Date: June 2021
Basis: Mav 2021 EPA RSL Table
Site ID:
Unit ID:
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 ue/m3
CAS #
Chemical Name:
Soil Gas
Concentration
3
(ug/m)
Calculated
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non -
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
7900
237
6.5E+03
7.3E-03
56-23-5
Carbon Tetrachloride
0.43
0.0129
4.7E-01
2.1E+01
2.8E-08
1.2E-04
67-66-3
Chloroform
0.76
0.0228
1.2E-01
2.0E+01
1.9E-07
2.2E-04
106-93-4
Dibromoethane, 1,2-
0.43
0.0129
4.7E-03
1.9E+00
2.8E-06
1.4E-03
75-71-8
Dichlorodifluoromethane
2.7
0.081
2.1E+01
7.8E-04
123-91-1
Dioxane, 1,4-
5.7
0.171
5.6E-01
6.3E+00
3.0E-07
5.5E-03
100-41-4
Eth lbenzene
0.54
0.0162
1.1E+00
2.1E+02
1.4E-08
1.6E-05
109-99-9
-Tetrah drofuran
31
0.93
4.2E+02
4.5E-04
67-63-0
Iso ro anol
470
14.1
4.2E+01
6.8E-02
78-93-3
Methyl Ethyl Ketone (2-Butanone)
45
1.35
1.0E+03
2.6E-04
108-10-1
Methyl Isobutyl Ketone (4-meth 1-2- entanone)
2.4
0.072
6.3E+02
2.3E-05
75-09-2
Methylene Chloride
3.1
0.093
1.0E+02
1.3E+02
9.2E-10
1.5E-04
91-20-3
-Naphthalene
0.67
0.0201
8.3E-02
6.3E-01
2.4E-07
6.4E-03
100-42-5
Styrene
0.46
0.0138
2.1E+02
1.3E-05
127-18-4
Tetrachloroeth lene
0.52
0.0156
1.1E+01
8.3E+00
1.4E-09
3.7E-04
108-88-3
Toluene
1.5
0.045
1.0E+03
8.6E-06
76-13-1
Trichloro-1,2,2-trifluoroethane, 1,1,2-
1
0.03
1.0E+03
5.8E-06
79-01-6
Trichloroeth lene
0.41
0.0123
4.8E-01
4.2E-01
2.6E-08
5.9E-03
75-69-4
Trichlorofluoromethane
5.9
0.177
95-63-6
Trimeth lbenzene, 1,2,4-
0.81
0.0243
1.3E+01
3.9E-04
108-67-8
Trimeth lbenzene, 1,3,5-
0.28
0.0084
1.3E+01
1.3E-04
1330-20-7
X lens
2.46
0.0738
2.1E+01
7.1E-04
Cumulative: I 3.6E-06 I 9.8E-02
North Carolina DEQ Risk Calculator

IDEQ Risk Calculator - Vapor Intrusion - Non -Residential Worker Indoor Air r
Version Date: June 2021
s: May 2021 EPA RSL Table
ID:
)sure Unit ID:
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic
risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 µg/m3.
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if
indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are
likely not associated with vapor intrusion.
All concentrations are in uo/m3
CAS #
Chemical Name:
Indoor Air
Concentration
3
(ug/m)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
24
2.7E+04
1.8E-04
7143-2
Benzene
0.63
1.6E+00
2.6E+01
4.0E-07
4.8E-03
10044-7
Benzyl Chloride
0.081
2.5E-01
8.8E-01
3.2E-07
1.8E-02
75-274
Bromodichloromethane
0.085
3.3E-01
2.6E-07
56-23-5
Carbon Tetrachloride
0.64
2.0E+00
8.8E+01
3.1E-07
1.5E-03
67-66-3
Chloroform
0.2
5.3E-01
8.6E+01
3.8E-07
4.7E-04
74-87-3
Chloromethane
2.6
7.9E+01
6.6E-03
106-934
Dibromoethane, 1,2-
0.075
2.0E-02
7.9E+00
3.7E-06
1.9E-03
75-71-8
Dichlorodifluoromethane
2.6
8.8E+01
5.9E-03
156-60-5
Dichloroeth lene, trans-1,2-
0.061
3.5E+01
3.5E-04
100414
Eth lbenzene
0.29
4.9E+00
8.8E+02
5.9E-08
6.6E-05
109-99-9
-Tetrah drofuran
0.44
1.8E+03
5.0E-05
142-82-5
Heptane, N-
0.39
3.5E+02
2.2E-04
87-68-3
Hexachlorobutadiene
0.21
5.6E.-01
3.8E-07
110-54-3
Hexane, N-
1.1
6.1E+02
3.6E-04
67-63-0
Iso ro anol
4
1.8E+02
4.6E-03
78-93-3
Methyl Ethyl Ketone 2-Butanone
3.4
4.4E+03
1.6E-04
75-09-2
Methylene Chloride
2.4
1.2E+03
5.3E+02
2.0E-09
9.1E-04
91-20-3
-Naphthalene
0.27
3.6E-01
2.6E+00
7.5E-07
2.1E-02
100-42-5
Styrene
0.66
8.8E+02
1.5E-04
79-34-5
Tetrachloroethane, 1,1,2,2-
0.073
2.1E-01
3.5E-07
127-184
Tetrachloroeth lene
0.14
4.7E+01
3.5E+01
3.0E-09
8.0E-04
108-88-3
Toluene
1.9
4.4E+03
8.7E-05
76-13-1
Trichloro-1,2,2-trifluoroethane, 1,1,2-
0.92
4.4E+03
4.2E-05
79-00-5
Trichloroethane, 1,1,2-
0.076
7.7E.-01
1.8E-01
9.9E-08
8.7E-02
75-694
Trichlorofluoromethane
1.3
95-63-6
Trimeth lbenzene, 1,2,4-
0.3
5.3E+01
1.1E-03
108-67-8
Trimeth lbenzene, 1,3,5-
0.099
5.3E+01
3.8E-04
1330-20-7
X lens
1.16
8.8E+01
2.6E-03
Cumulative: I 7.0E-06 1.6E-0 l
North Carolina DEQ Risk Calculator

DEQ Risk Calculator - Vapor Intrusion - Non -Residential Worker Soil Gas to Indoor Air rw:
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID:
Exposure Unit ID: dill
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 ue/m3
CAS #
Chemical Name:
Soil Gas
Concentration
s
(ug/m)
Calculated
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non -
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
7900
79
2.7E+04
5.8E-04
56-23-5
Carbon Tetrachloride
0.43
0.0043
2.0E+00
8.8E+01
2.1E-09
9.8E-06
67-66-3
Chloroform
0.76
0.0076
5.3E-01
8.6E+01
1.4E-08
1.8E-05
106-93-4
Dibromoethane, 1,2-
0.43
0.0043
2.0E-02
7.9E+00
2.1E-07
1.1E-04
75-71-8
Dichlorodifluoromethane
2.7
0.027
8.8E+01
6.2E-05
123-91-1
Dioxane, 1,4-
5.7
0.057
2.5E+00
2.6E+01
2.3E-08
4.3E-04
100-41-4
Eth lbenzene
0.54
0.0054
4.9E+00
8.8E+02
1.1E-09
1.2E-06
109-99-9
-Tetrah drofuran
31
0.31
1.8E+03
3.5E-05
67-63-0
Iso ro anal
470
4.7
1.8E+02
5.4E-03
78-93-3
Methyl Ethyl Ketone 2-Butanone
45
0.45
4.4E+03
2.1E-05
108-10-1
Methyl Isobutyl Ketone 4-meth 1-2- entanone
2.4
0.024
2.6E+03
1.8E-06
75-09-2
Methylene Chloride
3.1
0.031
1.2E+03
5.3E+02
2.5E-I I
1.2E-05
91-20-3
-Naphthalene
0.67
0.0067
3.6E-01
2.6E+00
1.9E-08
5.1E-04
100-42-5
Styrene
0.46
0.0046
8.8E+02
1.1E-06
127-18-4
Tetrachloroeth lene
0.52
0.0052
4.7E+01
3.5E+01
1.1E-10
3.0E-05
108-88-3
Toluene
1.5
0.015
4.4E+03
6.8E-07
76-13-1
Trichloro-1,2,2-trifluoroethane, 1,1,2-
1
0.01
4.4E+03
4.6E-07
79-01-6
Trichloroeth lene
0.41
0.0041
3.0E+00
1.8E+00
1.4E-09
4.7E-04
75-69-4
Trichlorofluoromethane
5.9
0.059
95-63-6
Trimeth lbenzene, 1,2,4-
0.81
0.0081
5.3E+01
3.1E-05
108-67-8
Trimeth lbenzene, 1,3,5-
0.28
0.0028
5.3E+01
1.1E-05
1330-20-7
X lenes
2.46
0.0246
8.8E+01
5.6E-05
Cumulative: I 2.7E-07 I 7.8E-03
North Carolina DEQ Risk Calculator