18045-Seneca Place-IA & SG Confirmation Sampling-Suite H

INDOOR AIR AND SUB -SLAB VAPOR SAMPLING REPORT
SENECA PLACE BROWNFIELDS SITE
SUITE H
5033 SOUTH BOULEVARD
CHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA
BROWNFIELDS PROJECT NO. 18045-14-060
ECS SOUTHEAST, LLP
PROJECT 49:11814-B
PREPARED FOR:
NEW FORUM, LLC/SENECA PLACE PARTNERS, LLC
NOVEMBER 15, 2021

i
"Setting the Standard for Service"
Ceotechnical • Construction Materials • Environmental • Facilities
November 15, 2021
Mr. Tyler Steele
New Forum, LLC/Seneca Place Partners, LLC
9224 Kings Parade Boulevard, Suite 2101
Charlotte, North Carolina 28273
Reference: Indoor Air and Sub -Slab Vapor Sampling Report
Seneca Place Brownfields Site
Suite H
5033 South Boulevard
Charlotte, Mecklenburg County, North Carolina
Brownfields Project No. 18045-14-060
ECS Project No. 49:11814-A
Dear Mr. Steele:
ECS Southeast, LLP (ECS) has completed the Indoor Air and Sub -Slab Vapor Sampling Report for the above
referenced site. This report has been completed at the request of the North Carolina Department of
Environmental Quality (NCDEQ) Division of Waste Management (NCDWM) — North Carolina Brownfields
Program (NCBP).
ECS appreciates the opportunity to provide our environmental consulting services to you on this project. If
you have any questions concerning this work plan or this project, please contact us.
Sincerely,
LLP
Scott Youy(g; P.G.
Environ ental roject Manager
704-525-5152
[e-mail]
Report Certification
I, Scott Young, P.G., a Licensed Geol '
certify that the information cods
c,Qi9 `°o
g< SEAL
irlv�zsg 2 19
Lei
Roger A. Smith, P.G.
Principal Geologist
704-525-5152
[e-mail]
;S Southeast, LLP (NC Registered Geologist Firm C-553), do
rrect and accurate to the best of my knowledge.
�o
� nP
GG
A
1812 Center Park Drive. Suite D. Charlotte, NC 28217 • T 704-525-5152 • www.ecslimited.cor
ECS Capitol Services. PLLC • ECS Florida. LLC • ECS Mid -Atlantic. LLC • ECS Midwest LLC • ECS Southeast. LLP • ECS Southwest. Li. 5

Indoor Air& Sub -Slab Vapor Sampling Report
Seneca Place Brownfields Site, Suite H
Charlotte, Mecklenburg County, North Carolina
Brownfields Project Number 18045-14-060
ECS Project No. 49:11814-8
November 15, 2021
TABLE OF CONTENTS
1.0 INTRODUCTION.......................................................................................................................................1
2.0 SCOPE OF WORK.....................................................................................................................................1
3.0 LABORATORY ANALYSES......................................................................................................................... 3
4.0 QA/QC..................................................................................................................................................... 3
5.0 CONCLUSIONS AND RECOMENDATIONS................................................................................................3
6.0 QUALIFICATIONS OF REPORT..................................................................................................................4
FIGURES
Figure 1— Site Location Map
Figure 2—Sample Location Map
TABLES
Table 1— Summary of Exterior Meteorological Conditions
Table 2 — Summary of Indoor Air and Outside Background Analytical Results
Table 3 — Summary of Leak Testing Results
Table 4 — Summary of Sub -Slab Soil Gas Analytical Results
n nnrninil-Ice
AppendixA
—Sampling Field Notes
Appendix B —
Indoor Air Survey Form
Appendix C —
Laboratory Analytical Reports and Chain -of -Custody Forms
Appendix D
— Historical Sample Results
Appendix E —
NCDEQ Risk Calculator Output

Indoor Air & Sub -Slab Vapor Sampling Report
Seneca Place Brownfields Site, Suite H
Charlotte, Mecklenburg County, North Carolina
Brownfields Project Number 18045-14-060
ECS Project No. 49:11814-B
November 15, 2021
1.0 INTRODUCTION
The subject property is located at 5033 South Boulevard in Charlotte, Mecklenburg County, North Carolina
(Figure 1) and identified by the Mecklenburg County GIS as Parcel Identification Number (PIN) 17105209.
The site currently consists of an approximate 36,750-square foot multi -tenant strip shopping center that
was constructed in 1985, an approximate 5,700-square foot automotive garage that was constructed in
1984, associated parking areas, and various landscaped areas. Due to previously identified groundwater
and associated vapor contaminants at the site, the site was included into the North Carolina Department
of Environmental Quality (NCDEQ), Brownfields Program (BP). The Brownfields Agreement (BFA) for the
site was finalized in April 2016. The Brownfields Project number for the site is 18045-14-60.
The entity, Seneca Place Partners, LLC, intends to conduct plumbing up fits in the various existing suites
of the strip shopping center. In accordance with the BFA, the NCDEQ, BP was notified of the intended up
fits and the NCDEQ, BP required that a new Environmental Management Plan (EMP) be prepared to
address the proposed activities. ECS completed and submitted the EMP (ECS Project No. 49:11814) on
July 9, 2020. The new EMP was approved by the NCDEQ, BP on July 10, 2020. The plumping up -fits in
Suite H were conducted between January 20 through 29, 2021.
2.0 SCOPE OF WORK
On September 16, 2021, ECS collected four indoor air samples and on September 17, 2021, collected four
sub -slab soil gas samples inside Suite H. These samples include IA-1 through IA-4 (indoor air) and SG-1
through SG-4 (sub -slab soil gas).
Indoor air and sub -slab soil gas sampling were conducted to confirm that vapor intrusion (VI) concerns do
not exist in the portions of the building that are to be occupied. The indoor air and sub -slab soil gas
sampling were conducted in general accordance with the North Carolina Division of Waste Management's
(NCDWM) Vapor Intrusion Guidance document (March 2018, Version 2) and Vapor Sampling Work Plan,
Revision 2.0 dated August 6, 2020 and approved by the NCDEQ, Brownfields on August 11, 2020.
2.1 Indoor Air Sampling
On September 16, 2021, four indoor air samples (IA-1 through IA-4) were collected at the site as shown
at the locations shown on Figure 2. The locations were selected based on accessibility and as proposed
in the above referenced approved Work Plan. Prior to conducting the indoor air sampling, ECS completed
an Indoor Air Building Survey and Sampling Form that included information concerning the building
characteristics, noted potential indoor air contaminant sources, general meteorological conditions, as well
as other general observations and conditions that could potentially affect sampling and sample results.
Meteorological conditions throughout the sampling event are summarized in Table 1. A copy of the
survey form is included in Appendix B.
In order to minimize disturbance of the canisters, ECS locked the doors to Suite H after initiating the
sampling. All doors and windows remained closed during the sampling, with the exception of when ECS
left and returned to complete the sampling. The heating, ventilation, and air conditioning (HVAC) was
operating in its normal continuous mode when samples were collected. As noted on the indoor air building

Indoor Air & Sub -Slab Vapor Sampling Report
Seneca Place Brownfields Site, Suite H
Charlotte, Mecklenburg County, North Carolina
Brownfields Project Number 18045-14-060
ECS Project No. 49:11814-B
November 15, 2021
survey, potential VOC source(s) were observed in the kitchen and dining area of Suite H, consisting of
various cleaning products, new furniture, and new carpeting.
The samples were collected using individually certified 6-liter (L) Summa canisters equipped with 8-hour
flow restrictors. The samples were collected by placing each Summa canister at a height of approximately
5 feet above the floor during sampling. ECS documented the vacuum readings indicated on each canister
at initiation and termination of sampling. These readings are included in Table 2 and the field notes
included as Appendix A. The sample containers were labeled, placed into protective packaging material
and shipped to Con -Test Analytical Laboratory (Con -Test) in East Longmeadow, Massachusetts, to be
analyzed for volatile organic compounds (VOCs) by EPA Method TO-15. ECS maintained chain -of -custody
(COC) procedures throughout the sample collection and transportation process. ECS collected one
duplicate indoor air sample for laboratory analysis by EPA Method TO-15. Sample IA-DUP was a duplicate
of indoor air sample IA-1 and was collected jointly with indoor air sample IA-1 via a tee connection in the
tubing.
Concurrent with the indoor air sampling, one exterior (ambient) upwind air sample (AA-1) was collected
for laboratory analysis by EPA Method TO-15. The approximate location of the exterior sample is
indicated on Figure 2.
2.2 Sub -Slab Soil Gas Samplin
On September 17, 2021, ECS collected four sub -slab soil gas samples from newly installed sub -slab
monitoring points (SG-1 through SG-4) at the site as shown at the locations shown on Figure 2. The sub -
slab samples were collected by installing new VaporPin° with a new silicon sleeve through the existing
concrete slab and allowed to equilibrate for a minimum of 20 minutes, prior to leak testing. New
dedicated and disposable polyethylene tubing was then connected from the VaporPin° to a pre -evacuated
and pre -cleaned batch certified Summa canister.
Prior to collecting the soil gas samples, laboratory grade helium gas was used as a quality
assurance/control measure to confirm the integrity of the VaporPin° seal. A plastic container (with an
approximate volume of 18 quarts) used as a shroud was placed and sealed over the sampling point and
sampling train. The sampling tubing and tracer gas tubing were placed through the container wall via
rubber grommets and a shroud was placed over the sample point and sample train leading to the purge
valves and sample port. The container was flooded with helium via the hose placed through the container
wall. A Model MGD-2000 Multi -Gas Leak detector was connected to the probe tube and three calculated
purge volumes were purged with a syringe. The calculated purge volume included the sample train as
well as the plumbing of the monitoring point plumbing. Helium samples were collected with a syringe
into a tedlar bag, and readings recorded in field notes and provided as Table 3. Additionally, the
construction details of the permanent sub -slab soil gas sampling points are included on the sampling field
notes. A concentration of less than 10 percent of the helium concentration within the shroud was
considered acceptable.
Following the helium leak test, sub -slab soil gas samples were collected using 1-liter Summa canisters at
an approximate flow rate of 0.2 L/minute over an approximate 5-minute period. ECS documented the
vacuum readings indicated on each canister at initiation and termination of sampling. These readings are
2

Indoor Air & Sub -Slab Vapor Sampling Report
Seneca Place Brownfields Site, Suite H
Charlotte, Mecklenburg County, North Carolina
Brownfields Project Number 18045-14-060
ECS Project No. 49:11814-B
November 15, 2021
included in Table 4 and the field notes included as Appendix A. The sample containers were labeled,
placed into protective packaging material and shipped to Con -Test to be analyzed for VOCs by EPA Method
TO-15. ECS maintained COC procedures throughout the sample collection and transportation process. A
copy of the COC is included in Appendix C. ECS collected one duplicate sub -slab soil gas sample for
laboratory analysis by EPA Method TO-15. Sample SG-DUP was a duplicate of sub -slab soil gas sample SG-
1.
3.0 LABORATORY ANALYSES
A summary of the laboratory analytical data for indoor air samples is shown on Table 2. Review of the
laboratory analytical report indicated a total of nine compounds in one or more of the samples collected
at concentrations greater than their respective Residential Vapor Intrusion Screening Levels (VISLs), with
the concentrations of chloroform in sample IA-3 and ethylbenzene, naphthalene, and m&p-xylene in
samples IA-1 through IA-4 greater than their respective Non -Residential VISLs. Various additional
compounds were detected in one or more of the indoor air samples collected at concentrations greater
than the laboratory method reporting limits, but less than their respective VISLs.
A summary of the laboratory analytical data for sub -slab soil gas samples is shown on Table 4. Review of
the laboratory analytical report indicated concentrations of 1,2-dichloroethane and 1,1,2-trichloroethane
in the SG-3 sub -slab sample greater than their respective Residential VISLs, but less than their respective
Non -Residential VISLs. Several additional compounds were detected in one or more of the sub -slab soil
gas samples collected at concentrations greater than the laboratory method reporting limits, but less than
their respective VISLs.
The laboratory analytical report is included as Appendix C.
4.0 QA/QC
The Summa canisters were individually certified for indoor air samples and batch certified for the soil gas
samples. Helium concentrations did not exceed five percent (5%) helium above the shroud concentrations
during leak tests for sub -slab samples. During the sampling of sub -slab soil gas, the sample train was
closed when the canister vacuum decreased to approximately five inches of mercury (in-Hg). ECS
documented the vacuum readings indicated on each canister at initiation and termination of sampling.
These readings are included in Tables 2 and 4 and the field notes included as Appendix B. A duplicate
indoor air sample (IA-DUP) was collected in conjunction with IA-1 while a duplicate sub -slab soil gas
sample (SG-DUP) was collected from SV-1. Results of the duplicate analysis appear consistent with the
samples they were collected in conjunction with.
5.0 CONCLUSIONS AND RECOMENDATIONS
Based on the laboratory analytical data, petroleum -related VOCs were detected in the indoor air of the
portions of the building that were sampled above their respective Non -Residential VISLs. VOCs were not
detected in the sub -slab soil gas samples at levels exceeding their respective Non -Residential VISLs.
3

Indoor Air & Sub -Slab Vapor Sampling Report
Seneca Place Brownfields Site, Suite H
Charlotte, Mecklenburg County, North Carolina
Brownfields Project Number 18045-14-060
ECS Project No. 49:11814-B
November 15, 2021
The absence of VOCs at concentrations above the Non -Residential VISLs in the sub -slab soil gas samples
suggest that the exceedances of VOCs in indoor air samples may be the result of a source or sources other
than vapor intrusion of soil gas. The initial driver for the sampling was a concentration of
tetra chloroethene (PCE) detected in soil gas sample VMP-2 collected by Hart & Hickman on May 5, 2015.
PCE was not detected in the indoor air or sub -slab samples collected at concentrations greater than its
VISLs. The locations of the historic soil gas samples are shown on Figure 2 and the analytical results of the
soil gas samples are included in Appendix D. As such, the indoor air concentrations leading to the Non -
Residential VISL exceedances appear to be attributed to indoor air sources/materials used during
construction and not a result of vapors below the building.
In addition, in light of the results for the indoor air and sub -slab soil gas samples collected, ECS input the
laboratory analytical results of these samples into the NCDEQ Risk Calculator. Based on the results of the
NCDEQ Risk Calculator, the concentrations did not exceed the risk thresholds for residential and non-
residential uses for any of the samples collected. Output from the results of the NCDEQ Risk Calculator
are presented in Appendix E.
Based upon the results of this assessment and the above conclusions, ECS recommends no additional
sampling at this time.
6.0 QUALIFICATIONS OF REPORT
The activities and evaluative approaches used in this assessment are consistent with those normally
employed in environmental assessment projects of this type. Our evaluation of site conditions has been
based on our understanding of the site project information and the data obtained during our field
activities. Environmental sampling performed and reported herein only provides for specific data points
scattered throughout the project area in accordance with the prior approved scope of work and work
authorization.
4

FIGURES

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Client:
Seneca Place Partners, LLC
Project:
SENECA PLACE SHOPPING
CENTER
5033 SOUTH BOULEVARD
CHARLOTTE,
MECKLENBURG COUNTY,
NORTH CAROLINA
Title:
USGS TOPOGRAPHIC MAP
SCALE AS SHOWN
Source:
Charlotte West, NC
7.5' Topographic Map, 2019
Charlotte East, NC
7.5' Topographic Map, 2019
Drawn By:
Checked By:
MSY
RAS
Approved By:
Date:
RAS
12/07/20
ECS Project No.
49:11814-B
FIGURE 1

i rrt= un
EXISTING PARCEL BOUNDARY
INDOOR AIR/SUB-SLAB SAMPLE OUTDOOR BACKGROUND I I APPROXIMATE SUITE
LOCATION SAMPLE I _ _ _ _ PARTITIONS
.VMP1/13
Approximate sub -slab sample collected by Hart & Hickman in 2015. (sample ID / PCE concentration in µg/m3)
bold values exceeded Non -Residential Soil gas Screening Level of 3,500 µg/m3
0 0.01251.025 0.05 Miles
I I I I I I I
Client:
SENECA PLACE PARTNERS, LLC
Project:
SENECA PLACE SHOPPING
CENTER
5033 SOUTH BOULEVARD
CHARLOTTE,
MECKLENBURG COUNTY,
NORTH CAROLINA
Title:
SAMPLE LOCATION MAP
SCALE AS SHOWN
Source:
Charlotte -Mecklenburg
County POLARIS GIS Website
Drawn By:
Checked By:
MSY
RAS
Approved By:
Date:
RAS
11/8/2021
ECS Project No.
49:11814-B
FIGURE 2

TABLES

TABLE 1
SUMMARY OF EXTERIOR METEOROLOGICAL CONDITIONS
Seneca Place Brownfields Site - Suite H
5033 South Boulevard
Charlotte, Mecklenburg County, North Carolina
Brownfields Project No.: 18045-14-060
ECS Project No.: 49:11814-B
Date
Time
Temperature
(°F)
Dew
Point (7)
Humidity
Humidity
Wind
Wind
Speed
(mph)
Pressure
(in Hz0)
Amount of
Precipitation
(in)
Condition
9/16/2021
8:52 AM
71
68
90
N
7
29.29
0.0
Light Rain
9/16/2021
9:52 AM
72
68
87
NNE
12
29.30
0.0
Cloudy
9/16/2021
10:52 AM
74
68
82
NNE
6
29.32
0.0
Light Rain
9/16/2021
11:52 AM
75
68
79
NNE
5
29.32
0.0
Light Rain
9/16/2021
12:52 PM
75
69
82
NNE
7
29.31
0.0
Light Rain
9/16/2021
1:52 PM
76
69
79
N
6
29.30
0.0
Light Rain
9/16/2021
2:52 PM
78
69
74
NNE
7
29.29
0.0
Mostly Cloudy
9/16/2021
3:52 PM
80
69
69
NNE
8
29.28
0.0
Mostly Cloudy
9/16/2021
4:52 PM
80
66
62
NE
6
29.27
0.0
Mostly Cloudy
9/16/2021
5:52 PM
80
67
64
NE
5
29.27
0.0
Mostly Cloudy
9/16/2021
6:52 PM
78
67
68
NNW
3
29.28
0.0
Mostly Cloudy
9/16/2021
7:52 PM
76
66
71
N
3
29.29
0.0
Mostl Cloud
Notes:
Meteorological information obtained from Weather Underground website (https://www.wunderground.com/history/daily/us/nc/charlotte/KCLT/date/2021-9-16)
T = degrees Fahrenheit
mph = miles per hour
in H2O = inches of water
in = inches

TABLE 2
SUMMARY OF INDOOR AIR AND OUTSIDE BACKGROUND ANALYTICAL RESULTS
Seneca Place Brownfields Site - Suite H
5033 South Boulevard
Charlotte, Mecklenburg County, North Carolina
Brownfields Project No.: 18045-14-060
ECS Project No.: 49:11814-B
Volatile Organic Compounds
by EPA TO-15
Laboratory
Initial Sample
Final Sample
v
c
v
2
`o
v
c
r
0
0
Vaccuum
Vaccum
Vaccum
v
w
a
v
Sample ID
Sample Date
no
Y
c
c
c
Reading
Reading
Reading
o
v
s
N
(in Hg)
(in Hg)
(in Hg)
is
w
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U
E
o
m
L
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w
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n
>
n
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c
N
13
c
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N
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0
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Non -Residential VISL
27,000
16
4,400
2.0
0.53
79
5,300
88
0.47
NS
NS
61
4.9
350
1 350
610
180
530
0.36
880
35
1,800
4,400
0.18
NS
4,400
53
53
88
88
IA-1
-30
-29
-5
09/16/21
75
0.77
7.4
0.49
0.39
1.1
1.7
3.3
<0.14
<0.24
720
<1.3
65
0.60
<0.14
2.8 J
35
3.6
2.7
<0.15
<0.24
3.9
3.9
<0.19
20
0.87 J
4.0
0.93
230
74
IA -DU P*
-30
-30
-5
09/16/21
16
0.43
1.3 J
0.44
0.27
1.3
2.7
<0.14
0.14 J
20
<1.3
0.36
<0.17
0.35
0.75 J
2.1 J
1.8
0.19
0.12 J
0.085 J
<1.0
1.3
<0.19
1.4
0.65 J
0.21
0.055 J
1.2
0.46
IA-2
-30
-29
-6
09/16/21
64
0.75
5.5
0.48
0.42
1.2
1.2
3.5
<0.14
<0.24
670
<1.3
54
0.72
0.80
1.9 J
33
1.2
2.7
<0.15
0.18 J
3.8
3.6
<0.19
18
0.95 J
3.6
0.84
190
62
IA-3
-30
-29
-6
09/16/21
82
0.89
5.5
0.59
0.83
1.2
3.2
3.1
0.72
<0.24
650
28
50
<0.17
<0.14
<4.9
1 15
1.8
1.6
1.6
0.35
4.0
14
1.3
10
0.72 J
2.4
0.50
170
57
IA-4
-30
-30
-5
09/16/21
31
0.92
3.81
0.38
0.29
1.5
1.4
3.4
<0.14
<0.24
760
<1.3
69
0.40
0.85
1.4 J
7.7
0.81 J
1.5
0.46
0.111
3.6
3.3
<0.19
12
0.61 J
2.1
0.36
230
73
AA-1
30
28
6
09/16/21
64
0.81
5.8
0.43
0.30
1.3
1.5
3.5
0.111
<0.24
690
<1.3
65
1 0.6
0.77
1 1.11
1 31.0
0.68 J
2.3
1.2
0.121
2.2
4.1
<0.19
20
0.66 J
3.8
0.74
220
69
Notes.
Results presented in micrograms per cubic meter (µg/m3)
in Hg = inches of mercury
Non -Residential VISL= NCDEQ-DWM Non -Residential Vapor Instrusion Screening Level Indoor Air Level (A) (June 2021) at target risk 1.0E-06
- - IA-DUP is a duplicate sample of the IA-1 record sample
1= Estimated concentration detected between laboratory method detection limit and reporting limit
INS = No Standard Established
VALUE= concentration greaterthan the laboratory method reporting limit
VALUE J= concentration greaterthan the Non -Residential VISL

TABLE 3
SUMMARY OF LEAK TESTING RESULTS
Seneca Place Brownfields Site - Suite H
5033 South Boulevard
Charlotte, Mecklenburg County, North Carolina
Brownfields Project No.: 18045-14-060
ECS Project No.: 49:11814-B
Sample ID
Helium Concentration
in Shroud (ppm)
Helium Readings from
Sample Train (ppm)
1
2
3
SG-1
28,000
2S
0
0
SG-2
19,000
0
0
SG-3
34,000
0
0
SG-4
29,000
0
0
EOOJ
Notes.
ppm = parts per million

TABLE 4
SUMMARY OF SUB -SLAB SOIL GAS ANALYTICAL RESULTS
Seneca Place Brownfields Site - Suite H
5033 South Boulevard
Charlotte, Mecklenburg County, North Carolina
Brownfields Project No.: 18045-14-060
ECS Project No.: 49:11814-B
Laboratory
Reading
Reading
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INDOOR AIR BUILDING SURVEY
and SAMPLING FORM
iite Name: M#: ip
'reparer's namclw r mi �"cT. y Date: r-�1y' O1 - 1
'reparer's affiliation: ELS Phone #: 164fl
part 1- Occupants ' ,�t�
Building Address: �033 �v,ytct �VD �%Tlj
Property Contact:
Owner / Renter / otber:
Contact's Phone: home
( ) work (
) cell (
)
# of Building occupants:
Children under age 13 ff�
Children age 13-18
Adults
Part 11— Building Characteristics
Building type: residential / multi -family residential / office stri mall commercial / industrial
Describe building: k 1 UU i \ 0. tCk 'SM.P TI\AL — Year constructed:
Sensitive population: day care / nursing home / hospital / school / other (specify): _
Number of floors below grade: —6- (fall basement / crawl space / slab on grade)
Number of floors az or above grade: 1
Depth of basement below grade surface: ft. Basement size: ftr
Basement floor construction: concrete / dirt / floating / stone / other (specify):
Foundation walls: poured con cinder bloc stone / other (specify)
Basement sump present? Yes / No Sump pump? Yes No Water in smnp? yes No
Type of healing system (circle all that apply):
hotaircirculation hot air radiation wood steam radiation
meal pump hot water radiation kerosene heater electric baseboard
of er(specify):
Type of ventilation system (circle all that apply):
a av conditiontn mechanical f aflnnom ventilation fans dtvt ua avng uni en range hood fan a t e au m
other (specify): e
Type(Corte all that apply):
Nazural gas electric / fuel
el oil /wood /coal /solar /kerosene
Are the basement walls or floor sealed with waterproof paint or epoxy comings?
Yes / Na

Is there a whole house fan? Yes
Septic system? Yes / Yes (but not used) r..No
Irrigation/pnvate well? Yes / Yes (but no used) No
Type of ground cover outside of building: grass wnc / asphalt other (specify)
Existing subsurface depressurization (radon) system in place? Yes & active /Passive
Sub -slab vapor/moisture barrier in place?
Type of barrier:
Yes / No
Part III - Outside Contaminant Sources Ity� rr
Other stationary sources nearby (gas stations, emission stacks, etc.): Neat C) � tQC
Heavy vehicular traffic nearby (or other mobile sources): \ F "N SC
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 some (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 a[ least 24 hours prior to the commencement of the indoor air sampling event.
entiajc�:
Location(s)
Removed
storared
e
storainne
E
solve-
anersphol
other house cleaning products
SL '
Moth balls
Polishes/waxes
U
JW
Insecticides
Furniture/floor polish
4a -
Nail polish / polish remover
Hairspray
Cologne /perhme
Air fresheners
-�
Fuel tank (inside buildin)
-�
stove or fireplace
New furniture / upholstery
—
4NAWood
Hobbies - um, paints, etc.

Part V — Miscellaneous Items
Do any occupants of the building smoke? Yes Na , How often?
Last time someone smoked in the building? J1_ 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 goaoline/fuels stored in the garage? Yes / No
Do the occupants of the building have thew clothes dry cleaned? Yes / No
If yes, how often? weekly / monthly / 34 limes a year
Do any of the occupants use solvents in work? Yes No
If yes, what types of solvents are used?
If yes, are their clothes washed at work? Yes / No
Have any pesticides/herbicides been applied around the building or in the yard?
If so, when and which chemicals?
Has there ever been a fire in the building? Yes / No If yes, when?
Yes No
Has painting or staining been done in the
building in the last 6 months? Yes No
If yes, when T ItA kokandwhen:? t
TN��WLk4
Part VI —Sampling Information
Sample Technician:
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-15 / TO-17 / other: Cert. Laboratory:
Sample locations (floor, room):
Field [DR _ -
Field ID #
Field ID #
Field M #
Were -Instructions for Occupams" followed? Yes /No
If not, describe modifications:

APPENDIX C

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
September 27, 2021
Scott Young
ECS Southeast - Greensboro, NC
4811 Koger Boulevard
Greensboro, NC 27407
Project Location: Charlotte, NC
Client Job Number:
Project Number: 11814B
Laboratory Work Order Number: 21I1198
Enclosed are results of analyses for samples received by the laboratory on September 20, 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 29

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ECS Southeast - Greensboro, NC REPORT DATE: 9/27/2021
4811 Koger Boulevard
Greensboro, NC 27407 PURCHASE ORDER NUMBER:
ATTN: Scott Young
PROJECT NUMBER: 11814B
ANALYTICAL SUMMARY
WORK ORDER NUMBER: 21I1198
The results of analyses performed on the following samples submitted to Con -Test, a Pace Analytical Laboratory, are found in this report.
PROJECT LOCATION: Charlotte, NC
FIELD SAMPLE # LAB ID: MATRIX SAMPLE DESCRIPTION TEST SUB LAB
SG-1
21I1198-01
Soil Gas
EPATO-15
SG-2
21I1198-02
Soil Gas
EPATO-15
SG-3
21I1198-03
Soil Gas
EPATO-15
SG-4
21I1198-04
Soil Gas
EPA TO-15
SG-DUP
21I1198-05
Soil Gas
EPATO-15
Page 2 of 29

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:
Vinyl Acetate
B290913-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 low side.
Analyte & Samples(s) Qualified:
Ethyl Acetate
21I1198-01[SG-1], 21I1198-02[SG-2], 21I1198-03[SG-3], 21I1198-04[SG-4], 21I1198-05[SG-DUP], B290913-BLKI, B290913-BS1
Internal Standard is outside of control criteria for this sample. The analytes being reported for this analytical run are not affected by this I.S.
being outside of control criteria. Data validation is not affected.
Analyte & Samples(s) Qualified:
1,4-Difluorobenzene (1)
21I1198-01 RE 1 [SG-1 ]
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
21I1198-01[SG-1], 21I1198-03[SG-3], 21I1198-04[SG-4], S063579-CCVI
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
B290913-BS1, 5063579-CCVI
Page 3 of 29

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 4 of 29

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 9/20/2021
Field Sample #: SG-1
Sample ID: 21I1198-01
Sample Matrix: Soil Gas
Sampled: 9/17/2021 12:06
Sample Description/Location:
Sub Description/Location:
Canister ID: 2108
Canister Size: 1 liter
Flow Controller ID: 4098
Sample Type: 5 min
Work Order: 21I1198
Initial Vacuum(in Hg): -27
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -4.8
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
71
8.0
4.8
170
19
11
4
9/23/21 21:55
BRF
Benzene
0.36
0.20
0.048
1.2
0.64
0.15
4
9/23/21 21:55
BRF
Benzyl chloride
ND
0.20
0.090
ND
1.0
0.47
4
9/23/21 21:55
BRF
Bromodichloromethane
ND
0.20
0.073
ND
1.3
0.49
4
9/23/21 21:55
BRF
Bromoform
ND
0.40
0.072
ND
4.1
0.74
4
9/23/21 21:55
BRF
Bromomethane
ND
0.20
0.16
ND
0.78
0.63
4
9/23/21 21:55
BRF
1,3-Butadiene
ND
0.20
0.14
ND
0.44
0.31
4
9/23/21 21:55
BRF
2-Butanone (MEK)
4.3
8.0
0.66
J
13
24
2.0
4
9/23/21 21:55
BRF
Carbon Disulfide
1.1
2.0
0.51
J
3.4
6.2
1.6
4
9/23/21 21:55
BRF
Carbon Tetrachloride
0.10
0.20
0.060
J
0.63
1.3
0.38
4
9/23/21 21:55
BRF
Chlorobenzene
ND
0.20
0.060
ND
0.92
0.27
4
9/23/21 21:55
BRF
Chloroethane
ND
0.20
0.15
ND
0.53
0.39
4
9/23/21 21:55
BRF
Chloroform
0.72
0.20
0.048
3.5
0.98
0.24
4
9/23/21 21:55
BRF
Chloromethane
ND
0.40
0.082
ND
0.83
0.17
4
9/23/21 21:55
BRF
Cyclohexane
4.3
0.20
0.13
15
0.69
0.46
4
9/23/21 21:55
BRF
Dibromochloromethane
ND
0.20
0.067
ND
1.7
0.57
4
9/23/21 21:55
BRF
1,2-Dibromoethane (EDB)
ND
0.20
0.056
ND
1.5
0.43
4
9/23/21 21:55
BRF
1,2-Dichlorobenzene
ND
0.20
0.074
ND
1.2
0.44
4
9/23/21 21:55
BRF
1,3-Dichlorobenzene
ND
0.20
0.048
ND
1.2
0.29
4
9/23/21 21:55
BRF
1,4-Dichlorobenzene
ND
0.20
0.081
ND
1.2
0.49
4
9/23/21 21:55
BRF
Dichlorodifluoromethane (Freon 12)
11
0.20
0.061
54
0.99
0.30
4
9/23/21 21:55
BRF
1, 1 -Dichloroethane
ND
0.20
0.067
ND
0.81
0.27
4
9/23/21 21:55
BRF
1,2-Dichloroethane
ND
0.20
0.073
ND
0.81
0.30
4
9/23/21 21:55
BRF
1, 1 -Dichloroethylene
ND
0.20
0.079
ND
0.79
0.31
4
9/23/21 21:55
BRF
cis-1,2-Dichloroethylene
ND
0.20
0.068
ND
0.79
0.27
4
9/23/21 21:55
BRF
trans-1,2-Dichloroethylene
ND
0.20
0.070
ND
0.79
0.28
4
9/23/21 21:55
BRF
1,2-Dichloropropane
ND
0.20
0.072
ND
0.92
0.33
4
9/23/21 21:55
BRF
cis- 1,3 -Dichloropropene
ND
0.20
0.093
ND
0.91
0.42
4
9/23/21 21:55
BRF
trans- 1, 3 -Dichloropropene
ND
0.20
0.062
ND
0.91
0.28
4
9/23/21 21:55
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 21:55
BRF
1,4-Dioxane
ND
2.0
0.14
ND
7.2
0.49
4
9/23/21 21:55
BRF
Ethanol
260
60
18
490
110
34
30
9/23/21 22:26
BRF
Ethyl Acetate
26
2.0
1.2
L-03
93
7.2
4.3
4
9/23/21 21:55
BRF
Ethylbenzene
ND
0.20
0.052
ND
0.87
0.22
4
9/23/21 21:55
BRF
4-Ethyltoluene
ND
0.20
0.062
ND
0.98
0.30
4
9/23/21 21:55
BRF
Heptane
ND
0.20
0.082
ND
0.82
0.34
4
9/23/21 21:55
BRF
Hexachlorobutadiene
ND
0.20
0.11
ND
2.1
1.2
4
9/23/21 21:55
BRF
Hexane
ND
8.0
0.66
ND
28
2.3
4
9/23/21 21:55
BRF
2-Hexanone (MBK)
ND
0.20
0.10
ND
0.82
0.41
4
9/23/21 21:55
BRF
Isopropanol
18
8.0
1.8
45
20
4.5
4
9/23/21 21:55
BRF
Methyl tert-Butyl Ether (MTBE)
ND
0.20
0.080
ND
0.72
0.29
4
9/23/21 21:55
BRF
Methylene Chloride
3.1
2.0
0.46
11
6.9
1.6
4
9/23/21 21:55
BRF
4-Methyl-2-pentanone (MIBK)
0.48
0.20
0.10
2.0
0.82
0.42
4
9/23/21 21:55
BRF
Naphthalene
0.51
0.20
0.13
V-35
2.7
1.0
0.66
4
9/23/21 21:55
BRF
Propene
ND
8.0
0.67
ND
14
1.2
4
9/23/21 21:55
BRF
Styrene
ND
0.20
0.063
ND
0.85
0.27
4
9/23/21 21:55
BRF
1,1,2,2-Tetrachloroethane
ND
0.20
0.061
ND
1.4
0.42
4
9/23/21 21:55
BRF
Page 5 of 29

con -test®
A Pace Analytical Laboratory
Project Location: Charlotte, NC
Date Received: 9/20/2021
Field Sample #: SG-1
Sample ID: 21I1198-01
Sample Matrix: Soil Gas
Sampled: 9/ 17/2021 12:06
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Sample Description/Location:
Sub Description/Location:
Canister ID: 2108
Canister Size: 1 liter
Flow Controller ID: 4098
Sample Type: 5 min
Work Order: 21I1198
Initial Vacuum(in Hg): -27
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -4.8
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
0.20
0.059
ND
1.4
0.40
4
9/23/21 21:55
BRF
Tetrahydrofuran
4.7
2.0
0.49
14
5.9
1.5
4
9/23/21 21:55
BRF
Toluene
5.0
0.20
0.084
19
0.75
0.32
4
9/23/21 21:55
BRF
1,2,4-Trichlorobenzene
ND
0.20
0.14
ND
1.5
1.0
4
9/23/21 21:55
BRF
1, 1, 1 -Trichloroethane
ND
0.20
0.092
ND
1.1
0.50
4
9/23/21 21:55
BRF
1,1,2-Trichloroethane
ND
0.20
0.080
ND
1.1
0.43
4
9/23/21 21:55
BRF
Trichloroethylene
ND
0.20
0.074
ND
1.1
0.40
4
9/23/21 21:55
BRF
Trichlorofluoromethane (Freon 11)
4.6
0.80
0.080
26
4.5
0.45
4
9/23/21 21:55
BRF
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
0.23
0.80
0.071
J 1.7
6.1
0.54
4
9/23/21 21:55
BRF
1,2,4-Trimethylbenzene
ND
0.20
0.059
ND
0.98
0.29
4
9/23/21 21:55
BRF
1,3,5-Trimethylbenzene
ND
0.20
0.055
ND
0.98
0.27
4
9/23/21 21:55
BRF
Vinyl Acetate
ND
4.0
0.37
ND
14
1.3
4
9/23/21 21:55
BRF
Vinyl Chloride
ND
0.20
0.079
ND
0.51
0.20
4
9/23/21 21:55
BRF
m&p-Xylene
21
0.40
0.11
93
1.7
0.48
4
9/23/21 21:55
BRF
o-Xylene
ND
0.20
0.054
ND
0.87
0.23
4
9/23/21 21:55
BRF
Surrogates
4-Bromofluorobenzene (1)
4-Bromofluorobenzene (1)
% Recovery
% REC Limits
92.5 70-130
98.2 70-130
9/23/21 22:26
9/23/21 21:55
Page 6 of 29

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Sample Description/Location:
Work Order: 2111198
Date Received: 9/20/2021
Sub Description/Location:
Initial Vacuum(in Hg): -29
Field Sample #: SG-2
Canister ID: 2230
Final Vacuum(in Hg): -5
Sample ID: 21I1198-02
Canister Size: 1 liter
Receipt Vacuum(in Hg): -5.7
Sample Matrix: Soil Gas
Flow Controller ID: 4309
Flow Controller Type: Fixed -Orifice
Sampled: 9/17/2021 11:28
Sample Type: 5 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
26
8.0
4.8
62
19
11
4
9/23/21 23:26
BRF
Benzene
0.67
0.20
0.048
2.1
0.64
0.15
4
9/23/21 23:26
BRF
Benzyl chloride
ND
0.20
0.090
ND
1.0
0.47
4
9/23/21 23:26
BRF
Bromodichloromethane
ND
0.20
0.073
ND
1.3
0.49
4
9/23/21 23:26
BRF
Bromoform
ND
0.40
0.072
ND
4.1
0.74
4
9/23/21 23:26
BRF
Bromomethane
ND
0.20
0.16
ND
0.78
0.63
4
9/23/21 23:26
BRF
1,3-Butadiene
ND
0.20
0.14
ND
0.44
0.31
4
9/23/21 23:26
BRF
2-Butanone (MEK)
ND
8.0
0.66
ND
24
2.0
4
9/23/21 23:26
BRF
Carbon Disulfide
ND
2.0
0.51
ND
6.2
1.6
4
9/23/21 23:26
BRF
Carbon Tetrachloride
ND
0.20
0.060
ND
1.3
0.38
4
9/23/21 23:26
BRF
Chlorobenzene
ND
0.20
0.060
ND
0.92
0.27
4
9/23/21 23:26
BRF
Chloroethane
ND
0.20
0.15
ND
0.53
0.39
4
9/23/21 23:26
BRF
Chloroform
ND
0.20
0.048
ND
0.98
0.24
4
9/23/21 23:26
BRF
Chloromethane
ND
0.40
0.082
ND
0.83
0.17
4
9/23/21 23:26
BRF
Cyclohexane
8.4
0.20
0.13
29
0.69
0.46
4
9/23/21 23:26
BRF
Dibromochloromethane
ND
0.20
0.067
ND
1.7
0.57
4
9/23/21 23:26
BRF
1,2-Dibromoethane (EDB)
ND
0.20
0.056
ND
1.5
0.43
4
9/23/21 23:26
BRF
1,2-Dichlorobenzene
ND
0.20
0.074
ND
1.2
0.44
4
9/23/21 23:26
BRF
1,3-Dichlorobenzene
ND
0.20
0.048
ND
1.2
0.29
4
9/23/21 23:26
BRF
1,4-Dichlorobenzene
ND
0.20
0.081
ND
1.2
0.49
4
9/23/21 23:26
BRF
Dichlorodifluoromethane (Freon 12)
0.92
0.20
0.061
4.5
0.99
0.30
4
9/23/21 23:26
BRF
1,1-Dichloroethane
ND
0.20
0.067
ND
0.81
0.27
4
9/23/21 23:26
BRF
1,2-Dichloroethane
ND
0.20
0.073
ND
0.81
0.30
4
9/23/21 23:26
BRF
1,1-Dichloroethylene
ND
0.20
0.079
ND
0.79
0.31
4
9/23/21 23:26
BRF
cis-1,2-Dichloroethylene
ND
0.20
0.068
ND
0.79
0.27
4
9/23/21 23:26
BRF
trans-1,2-Dichloroethylene
ND
0.20
0.070
ND
0.79
0.28
4
9/23/21 23:26
BRF
1,2-Dichloropropane
ND
0.20
0.072
ND
0.92
0.33
4
9/23/21 23:26
BRF
cis- 1,3 -Dichloropropene
ND
0.20
0.093
ND
0.91
0.42
4
9/23/21 23:26
BRF
trans- 1, 3 -Dichloropropene
ND
0.20
0.062
ND
0.91
0.28
4
9/23/21 23:26
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 23:26
BRF
1,4-Dioxane
ND
2.0
0.14
ND
7.2
0.49
4
9/23/21 23:26
BRF
Ethanol
81
8.0
2.4
150
15
4.6
4
9/23/21 23:26
BRF
Ethyl Acetate
ND
2.0
1.2
L-03 ND
7.2
4.3
4
9/23/21 23:26
BRF
Ethylbenzene
9.9
0.20
0.052
43
0.87
0.22
4
9/23/21 23:26
BRF
4-Ethyltoluene
ND
0.20
0.062
ND
0.98
0.30
4
9/23/21 23:26
BRF
Heptane
ND
0.20
0.082
ND
0.82
0.34
4
9/23/21 23:26
BRF
Hexachlorobutadiene
ND
0.20
0.11
ND
2.1
1.2
4
9/23/21 23:26
BRF
Hexane
ND
8.0
0.66
ND
28
2.3
4
9/23/21 23:26
BRF
2-Hexanone (MBK)
ND
0.20
0.10
ND
0.82
0.41
4
9/23/21 23:26
BRF
Isopropanol
ND
8.0
1.8
ND
20
4.5
4
9/23/21 23:26
BRF
Methyl tert-Butyl Ether (MTBE)
ND
0.20
0.080
ND
0.72
0.29
4
9/23/21 23:26
BRF
Methylene Chloride
0.62
2.0
0.46
J 2.2
6.9
1.6
4
9/23/21 23:26
BRF
4-Methyl-2-pentanone (MIBK)
ND
0.20
0.10
ND
0.82
0.42
4
9/23/21 23:26
BRF
Naphthalene
ND
0.20
0.13
ND
1.0
0.66
4
9/23/21 23:26
BRF
Propene
ND
8.0
0.67
ND
14
1.2
4
9/23/21 23:26
BRF
Styrene
0.70
0.20
0.063
3.0
0.85
0.27
4
9/23/21 23:26
BRF
1,1,2,2-Tetrachloroethane
ND
0.20
0.061
ND
1.4
0.42
4
9/23/21 23:26
BRF
Page 7 of 29

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Sample Description/Location:
Work Order: 2111198
Date Received: 9/20/2021
Sub Description/Location:
Initial Vacuum(in Hg): -29
Field Sample #: SG-2
Canister ID: 2230
Final Vacuum(in Hg): -5
Sample ID: 21I1198-02
Canister Size: 1 liter
Receipt Vacuum(in Hg): -5.7
Sample Matrix: Soil Gas
Flow Controller ID: 4309
Flow Controller Type: Fixed -Orifice
Sampled: 9/17/2021 11:28
Sample Type: 5 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
Tetrachloroethylene
ND
0.20
0.059
ND
1.4
0.40
4
9/23/21 23:26
BRF
Tetrahydrofuran
ND
2.0
0.49
ND
5.9
1.5
4
9/23/21 23:26
BRF
Toluene
1.3
0.20
0.084
4.8
0.75
0.32
4
9/23/21 23:26
BRF
1,2,4-Trichlorobenzene
ND
0.20
0.14
ND
1.5
1.0
4
9/23/21 23:26
BRF
1, 1, 1 -Trichloroethane
ND
0.20
0.092
ND
1.1
0.50
4
9/23/21 23:26
BRF
1,1,2-Trichloroethane
ND
0.20
0.080
ND
1.1
0.43
4
9/23/21 23:26
BRF
Trichloroethylene
ND
0.20
0.074
ND
1.1
0.40
4
9/23/21 23:26
BRF
Trichlorofluoromethane (Freon 11)
4.4
0.80
0.080
25
4.5
0.45
4
9/23/21 23:26
BRF
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
ND
0.80
0.071
ND
6.1
0.54
4
9/23/21 23:26
BRF
1,2,4-Trimethylbenzene
ND
0.20
0.059
ND
0.98
0.29
4
9/23/21 23:26
BRF
1,3,5-Trimethylbenzene
ND
0.20
0.055
ND
0.98
0.27
4
9/23/21 23:26
BRF
Vinyl Acetate
ND
4.0
0.37
ND
14
1.3
4
9/23/21 23:26
BRF
Vinyl Chloride
ND
0.20
0.079
ND
0.51
0.20
4
9/23/21 23:26
BRF
m&p-Xylene
31
0.40
0.11
130
1.7
0.48
4
9/23/21 23:26
BRF
o-Xylene
9.1
0.20
0.054
40
0.87
0.23
4
9/23/21 23:26
BRF
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1) 96.7 70-130 9/23/21 23:26
Page 8 of 29

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Sample Description/Location:
Work Order: 2111198
Date Received: 9/20/2021
Sub Description/Location:
Initial Vacuum(in Hg): -21
Field Sample #: SG-3
Canister ID: 2524
Final Vacuum(in Hg): -5
Sample ID: 21I1198-03
Canister Size: 1 liter
Receipt Vacuum(in Hg): -5.2
Sample Matrix: Soil Gas
Flow Controller ID: 4173
Flow Controller Type: Fixed -Orifice
Sampled: 9/17/2021 11:02
Sample Type: 5 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
65
8.0
4.8
150
19
11
4
9/24/21
0:29
BRF
Benzene
0.72
0.20
0.048
2.3
0.64
0.15
4
9/24/21
0:29
BRF
Benzyl chloride
ND
0.20
0.090
ND
1.0
0.47
4
9/24/21
0:29
BRF
Bromodichloromethane
ND
0.20
0.073
ND
1.3
0.49
4
9/24/21
0:29
BRF
Bromoform
ND
0.40
0.072
ND
4.1
0.74
4
9/24/21
0:29
BRF
Bromomethane
ND
0.20
0.16
ND
0.78
0.63
4
9/24/21
0:29
BRF
1,3-Butadiene
ND
0.20
0.14
ND
0.44
0.31
4
9/24/21
0:29
BRF
2-Butanone (MEK)
20
8.0
0.66
60
24
2.0
4
9/24/21
0:29
BRF
Carbon Disulfide
ND
2.0
0.51
ND
6.2
1.6
4
9/24/21
0:29
BRF
Carbon Tetrachloride
0.14
0.20
0.060
J
0.88
1.3
0.38
4
9/24/21
0:29
BRF
Chlorobenzene
ND
0.20
0.060
ND
0.92
0.27
4
9/24/21
0:29
BRF
Chloroethane
ND
0.20
0.15
ND
0.53
0.39
4
9/24/21
0:29
BRF
Chloroform
0.66
0.20
0.048
3.2
0.98
0.24
4
9/24/21
0:29
BRF
Chloromethane
ND
0.40
0.082
ND
0.83
0.17
4
9/24/21
0:29
BRF
Cyclohexane
7.3
0.20
0.13
25
0.69
0.46
4
9/24/21
0:29
BRF
Dibromochloromethane
ND
0.20
0.067
ND
1.7
0.57
4
9/24/21
0:29
BRF
1,2-Dibromoethane (EDB)
ND
0.20
0.056
ND
1.5
0.43
4
9/24/21
0:29
BRF
1,2-Dichlorobenzene
ND
0.20
0.074
ND
1.2
0.44
4
9/24/21
0:29
BRF
1,3-Dichlorobenzene
ND
0.20
0.048
ND
1.2
0.29
4
9/24/21
0:29
BRF
1,4-Dichlorobenzene
ND
0.20
0.081
ND
1.2
0.49
4
9/24/21
0:29
BRF
Dichlorodifluoromethane (Freon 12)
0.61
0.20
0.061
3.0
0.99
0.30
4
9/24/21
0:29
BRF
1,1-Dichloroethane
ND
0.20
0.067
ND
0.81
0.27
4
9/24/21
0:29
BRF
1,2-Dichloroethane
0.91
0.20
0.073
3.7
0.81
0.30
4
9/24/21
0:29
BRF
1,1-Dichloroethylene
ND
0.20
0.079
ND
0.79
0.31
4
9/24/21
0:29
BRF
cis-1,2-Dichloroethylene
ND
0.20
0.068
ND
0.79
0.27
4
9/24/21
0:29
BRF
trans-1,2-Dichloroethylene
ND
0.20
0.070
ND
0.79
0.28
4
9/24/21
0:29
BRF
1,2-Dichloropropane
ND
0.20
0.072
ND
0.92
0.33
4
9/24/21
0:29
BRF
cis- 1,3 -Dichloropropene
ND
0.20
0.093
ND
0.91
0.42
4
9/24/21
0:29
BRF
trans- 1, 3 -Dichloropropene
ND
0.20
0.062
ND
0.91
0.28
4
9/24/21
0:29
BRF
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)
ND
0.20
0.069
ND
1.4
0.48
4
9/24/21
0:29
BRF
1,4-Dioxane
2.9
2.0
0.14
11
7.2
0.49
4
9/24/21
0:29
BRF
Ethanol
380
60
18
710
110
34
30
9/24/21
1:00
BRF
Ethyl Acetate
36
2.0
1.2
L-03
130
7.2
4.3
4
9/24/21
0:29
BRF
Ethylbenzene
11
0.20
0.052
49
0.87
0.22
4
9/24/21
0:29
BRF
4-Ethyltoluene
ND
0.20
0.062
ND
0.98
0.30
4
9/24/21
0:29
BRF
Heptane
0.70
0.20
0.082
2.9
0.82
0.34
4
9/24/21
0:29
BRF
Hexachlorobutadiene
ND
0.20
0.11
ND
2.1
1.2
4
9/24/21
0:29
BRF
Hexane
ND
8.0
0.66
ND
28
2.3
4
9/24/21
0:29
BRF
2-Hexanone (MBK)
ND
0.20
0.10
ND
0.82
0.41
4
9/24/21
0:29
BRF
Isopropanol
19
8.0
1.8
46
20
4.5
4
9/24/21
0:29
BRF
Methyl tert-Butyl Ether (MTBE)
ND
0.20
0.080
ND
0.72
0.29
4
9/24/21
0:29
BRF
Methylene Chloride
1.9
2.0
0.46
J
6.6
6.9
1.6
4
9/24/21
0:29
BRF
4-Methyl-2-pentanone (MIBK)
ND
0.20
0.10
ND
0.82
0.42
4
9/24/21
0:29
BRF
Naphthalene
0.44
0.20
0.13
V-35
2.3
1.0
0.66
4
9/24/21
0:29
BRF
Propene
ND
8.0
0.67
ND
14
1.2
4
9/24/21
0:29
BRF
Styrene
2.1
0.20
0.063
9.1
0.85
0.27
4
9/24/21
0:29
BRF
1,1,2,2-Tetrachloroethane
ND
0.20
0.061
ND
1.4
0.42
4
9/24/21
0:29
BRF
Page 9 of 29

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Sample Description/Location:
Work Order: 2111198
Date Received: 9/20/2021
Sub Description/Location:
Initial Vacuum(in Hg): -21
Field Sample #: SG-3
Canister ID: 2524
Final Vacuum(in Hg): -5
Sample ID: 21I1198-03
Canister Size: 1 liter
Receipt Vacuum(in Hg): -5.2
Sample Matrix: Soil Gas
Flow Controller ID: 4173
Flow Controller Type: Fixed -Orifice
Sampled: 9/17/2021 11:02
Sample Type: 5 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
9/24/21
0:29
BRF
Tetrahydrofuran
15
2.0
0.49
44
5.9
1.5
4
9/24/21
0:29
BRF
Toluene
17
0.20
0.084
64
0.75
0.32
4
9/24/21
0:29
BRF
1,2,4-Trichlorobenzene
ND
0.20
0.14
ND
1.5
1.0
4
9/24/21
0:29
BRF
1, 1, 1 -Trichloroethane
ND
0.20
0.092
ND
1.1
0.50
4
9/24/21
0:29
BRF
1,1,2-Trichloroethane
1.0
0.20
0.080
5.7
1.1
0.43
4
9/24/21
0:29
BRF
Trichloroethylene
ND
0.20
0.074
ND
1.1
0.40
4
9/24/21
0:29
BRF
Trichlorofluoromethane (Freon 11)
2.5
0.80
0.080
14
4.5
0.45
4
9/24/21
0:29
BRF
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
ND
0.80
0.071
ND
6.1
0.54
4
9/24/21
0:29
BRF
1,2,4-Trimethylbenzene
0.88
0.20
0.059
4.3
0.98
0.29
4
9/24/21
0:29
BRF
1,3,5-Trimethylbenzene
0.25
0.20
0.055
1.2
0.98
0.27
4
9/24/21
0:29
BRF
Vinyl Acetate
ND
4.0
0.37
ND
14
1.3
4
9/24/21
0:29
BRF
Vinyl Chloride
ND
0.20
0.079
ND
0.51
0.20
4
9/24/21
0:29
BRF
m&p-Xylene
30
0.40
0.11
130
1.7
0.48
4
9/24/21
0:29
BRF
o-Xylene
7.0
0.20
0.054
31
0.87
0.23
4
9/24/21
0:29
BRF
Surrogates
% Recovery
% REC Limits
4-Bromofluorobenzene (1)
97.0
70-130
9/24/21
0:29
4-Bromofluorobenzene (1)
98.5
70-130
9/24/21
1:00
Page 10 of 29

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Sample Description/Location:
Work Order: 2111198
Date Received: 9/20/2021
Sub Description/Location:
Initial Vacuum(in Hg): -28
Field Sample #: SG-4
Canister ID: 2542
Final Vacuum(in Hg): -5
Sample ID: 21I1198-04
Canister Size: 1 liter
Receipt Vacuum(in Hg): -5.4
Sample Matrix: Soil Gas
Flow Controller ID: 4191
Flow Controller Type: Fixed -Orifice
Sampled: 9/17/2021 10:26
Sample Type: 5 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
35
8.0
4.8
84
19
11
4
9/24/21
1:59
BRF
Benzene
0.34
0.20
0.048
1.1
0.64
0.15
4
9/24/21
1:59
BRF
Benzyl chloride
ND
0.20
0.090
ND
1.0
0.47
4
9/24/21
1:59
BRF
Bromodichloromethane
ND
0.20
0.073
ND
1.3
0.49
4
9/24/21
1:59
BRF
Bromoform
ND
0.20
0.072
ND
2.1
0.74
4
9/24/21
1:59
BRF
Bromomethane
ND
0.20
0.16
ND
0.78
0.63
4
9/24/21
1:59
BRF
1,3-Butadiene
ND
0.20
0.14
ND
0.44
0.31
4
9/24/21
1:59
BRF
2-Butanone (MEK)
4.5
8.0
0.66
J
13
24
2.0
4
9/24/21
1:59
BRF
Carbon Disulfide
ND
2.0
0.51
ND
6.2
1.6
4
9/24/21
1:59
BRF
Carbon Tetrachloride
ND
0.20
0.060
ND
1.3
0.38
4
9/24/21
1:59
BRF
Chlorobenzene
ND
0.20
0.060
ND
0.92
0.27
4
9/24/21
1:59
BRF
Chloroethane
ND
0.20
0.15
ND
0.53
0.39
4
9/24/21
1:59
BRF
Chloroform
0.26
0.20
0.048
1.3
0.98
0.24
4
9/24/21
1:59
BRF
Chloromethane
ND
0.40
0.082
ND
0.83
0.17
4
9/24/21
1:59
BRF
Cyclohexane
4.9
0.20
0.13
17
0.69
0.46
4
9/24/21
1:59
BRF
Dibromochloromethane
ND
0.20
0.067
ND
1.7
0.57
4
9/24/21
1:59
BRF
1,2-Dibromoethane (EDB)
ND
0.20
0.056
ND
1.5
0.43
4
9/24/21
1:59
BRF
1,2-Dichlorobenzene
ND
0.20
0.074
ND
1.2
0.44
4
9/24/21
1:59
BRF
1,3-Dichlorobenzene
ND
0.20
0.048
ND
1.2
0.29
4
9/24/21
1:59
BRF
1,4-Dichlorobenzene
ND
0.20
0.081
ND
1.2
0.49
4
9/24/21
1:59
BRF
Dichlorodifluoromethane (Freon 12)
12
0.20
0.061
59
0.99
0.30
4
9/24/21
1:59
BRF
1,1-Dichloroethane
ND
0.20
0.067
ND
0.81
0.27
4
9/24/21
1:59
BRF
1,2-Dichloroethane
ND
0.20
0.073
ND
0.81
0.30
4
9/24/21
1:59
BRF
1,1-Dichloroethylene
ND
0.20
0.079
ND
0.79
0.31
4
9/24/21
1:59
BRF
cis-1,2-Dichloroethylene
ND
0.20
0.068
ND
0.79
0.27
4
9/24/21
1:59
BRF
trans-1,2-Dichloroethylene
ND
0.20
0.070
ND
0.79
0.28
4
9/24/21
1:59
BRF
1,2-Dichloropropane
ND
0.20
0.072
ND
0.92
0.33
4
9/24/21
1:59
BRF
cis- 1,3 -Dichloropropene
ND
0.20
0.093
ND
0.91
0.42
4
9/24/21
1:59
BRF
trans- 1, 3 -Dichloropropene
ND
0.20
0.062
ND
0.91
0.28
4
9/24/21
1:59
BRF
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)
ND
0.20
0.069
ND
1.4
0.48
4
9/24/21
1:59
BRF
1,4-Dioxane
ND
2.0
0.14
ND
7.2
0.49
4
9/24/21
1:59
BRF
Ethanol
150
8.0
2.4
290
15
4.6
4
9/24/21
1:59
BRF
Ethyl Acetate
ND
2.0
1.2
L-03
ND
7.2
4.3
4
9/24/21
1:59
BRF
Ethylbenzene
5.6
0.20
0.052
24
0.87
0.22
4
9/24/21
1:59
BRF
4-Ethyltoluene
ND
0.20
0.062
ND
0.98
0.30
4
9/24/21
1:59
BRF
Heptane
ND
0.20
0.082
ND
0.82
0.34
4
9/24/21
1:59
BRF
Hexachlorobutadiene
ND
0.20
0.11
ND
2.1
1.2
4
9/24/21
1:59
BRF
Hexane
ND
8.0
0.66
ND
28
2.3
4
9/24/21
1:59
BRF
2-Hexanone (MBK)
ND
0.20
0.10
ND
0.82
0.41
4
9/24/21
1:59
BRF
Isopropanol
3.1
8.0
1.8
J
7.6
20
4.5
4
9/24/21
1:59
BRF
Methyl tert-Butyl Ether (MTBE)
ND
0.20
0.080
ND
0.72
0.29
4
9/24/21
1:59
BRF
Methylene Chloride
ND
2.0
0.46
ND
6.9
1.6
4
9/24/21
1:59
BRF
4-Methyl-2-pentanone (MIBK)
ND
0.20
0.10
ND
0.82
0.42
4
9/24/21
1:59
BRF
Naphthalene
0.32
0.20
0.13
V-35
1.7
1.0
0.66
4
9/24/21
1:59
BRF
Propene
ND
8.0
0.67
ND
14
1.2
4
9/24/21
1:59
BRF
Styrene
0.58
0.20
0.063
2.5
0.85
0.27
4
9/24/21
1:59
BRF
1,1,2,2-Tetrachloroethane
ND
0.20
0.061
ND
1.4
0.42
4
9/24/21
1:59
BRF
Page 11 of 29

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Sample Description/Location:
Work Order: 2111198
Date Received: 9/20/2021
Sub Description/Location:
Initial Vacuum(in Hg): -28
Field Sample #: SG-4
Canister ID: 2542
Final Vacuum(in Hg): -5
Sample ID: 21I1198-04
Canister Size: 1 liter
Receipt Vacuum(in Hg): -5.4
Sample Matrix: Soil Gas
Flow Controller ID: 4191
Flow Controller Type: Fixed -Orifice
Sampled: 9/17/2021 10:26
Sample Type: 5 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
Tetrachloroethylene
1.7
0.20
0.059
12
1.4
0.40
4
9/24/21
1:59
BRF
Tetrahydrofuran
ND
2.0
0.49
ND
5.9
1.5
4
9/24/21
1:59
BRF
Toluene
1.1
0.20
0.084
4.0
0.75
0.32
4
9/24/21
1:59
BRF
1,2,4-Trichlorobenzene
ND
0.20
0.14
ND
1.5
1.0
4
9/24/21
1:59
BRF
1, 1, 1 -Trichloroethane
ND
0.20
0.092
ND
1.1
0.50
4
9/24/21
1:59
BRF
1,1,2-Trichloroethane
ND
0.20
0.080
ND
1.1
0.43
4
9/24/21
1:59
BRF
Trichloroethylene
ND
0.20
0.074
ND
1.1
0.40
4
9/24/21
1:59
BRF
Trichlorofluoromethane (Freon 11)
140
0.80
0.080
790
4.5
0.45
4
9/24/21
1:59
BRF
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
ND
0.80
0.071
ND
6.1
0.54
4
9/24/21
1:59
BRF
1,2,4-Trimethylbenzene
ND
0.20
0.059
ND
0.98
0.29
4
9/24/21
1:59
BRF
1,3,5-Trimethylbenzene
ND
0.20
0.055
ND
0.98
0.27
4
9/24/21
1:59
BRF
Vinyl Acetate
ND
4.0
0.37
ND
14
1.3
4
9/24/21
1:59
BRF
Vinyl Chloride
ND
0.20
0.079
ND
0.51
0.20
4
9/24/21
1:59
BRF
m&p-Xylene
21
0.40
0.11
90
1.7
0.48
4
9/24/21
1:59
BRF
o-Xylene
7.4
0.20
0.054
32
0.87
0.23
4
9/24/21
1:59
BRF
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1) 97.8 70-130 9/24/21 1:59
Page 12 of 29

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Sample Description/Location:
Work Order: 2111198
Date Received: 9/20/2021
Sub Description/Location:
Initial Vacuum(in Hg): -28
Field Sample #: SGDUP
Canister ID: 2240
Final Vacuum(in Hg): -5
Sample ID: 21I1198-05
Canister Size: 1 liter
Receipt Vacuum(in Hg): -6.3
Sample Matrix: Soil Gas
Flow Controller ID: 4075
Flow Controller Type: Fixed -Orifice
Sampled: 9/17/2021 00:00
Sample Type: 5 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
65
8.0
4.8
150
19
11
4
9/24/21
3:00
BRF
Benzene
0.20
0.20
0.048
J
0.63
0.64
0.15
4
9/24/21
3:00
BRF
Benzyl chloride
ND
0.20
0.090
ND
1.0
0.47
4
9/24/21
3:00
BRF
Bromodichloromethane
ND
0.20
0.073
ND
1.3
0.49
4
9/24/21
3:00
BRF
Bromoform
ND
0.20
0.072
ND
2.1
0.74
4
9/24/21
3:00
BRF
Bromomethane
ND
0.20
0.16
ND
0.78
0.63
4
9/24/21
3:00
BRF
1,3-Butadiene
ND
0.20
0.14
ND
0.44
0.31
4
9/24/21
3:00
BRF
2-Butanone (MEK)
3.3
8.0
0.66
J
9.8
24
2.0
4
9/24/21
3:00
BRF
Carbon Disulfide
ND
2.0
0.51
ND
6.2
1.6
4
9/24/21
3:00
BRF
Carbon Tetrachloride
ND
0.20
0.060
ND
1.3
0.38
4
9/24/21
3:00
BRF
Chlorobenzene
ND
0.20
0.060
ND
0.92
0.27
4
9/24/21
3:00
BRF
Chloroethane
ND
0.20
0.15
ND
0.53
0.39
4
9/24/21
3:00
BRF
Chloroform
0.63
0.20
0.048
3.1
0.98
0.24
4
9/24/21
3:00
BRF
Chloromethane
ND
0.40
0.082
ND
0.83
0.17
4
9/24/21
3:00
BRF
Cyclohexane
ND
0.20
0.13
ND
0.69
0.46
4
9/24/21
3:00
BRF
Dibromochloromethane
ND
0.20
0.067
ND
1.7
0.57
4
9/24/21
3:00
BRF
1,2-Dibromoethane (EDB)
ND
0.20
0.056
ND
1.5
0.43
4
9/24/21
3:00
BRF
1,2-Dichlorobenzene
ND
0.20
0.074
ND
1.2
0.44
4
9/24/21
3:00
BRF
1,3-Dichlorobenzene
ND
0.20
0.048
ND
1.2
0.29
4
9/24/21
3:00
BRF
1,4-Dichlorobenzene
ND
0.20
0.081
ND
1.2
0.49
4
9/24/21
3:00
BRF
Dichlorodifluoromethane (Freon 12)
13
0.20
0.061
66
0.99
0.30
4
9/24/21
3:00
BRF
1,1-Dichloroethane
ND
0.20
0.067
ND
0.81
0.27
4
9/24/21
3:00
BRF
1,2-Dichloroethane
ND
0.20
0.073
ND
0.81
0.30
4
9/24/21
3:00
BRF
1,1-Dichloroethylene
ND
0.20
0.079
ND
0.79
0.31
4
9/24/21
3:00
BRF
cis-1,2-Dichloroethylene
ND
0.20
0.068
ND
0.79
0.27
4
9/24/21
3:00
BRF
trans-1,2-Dichloroethylene
ND
0.20
0.070
ND
0.79
0.28
4
9/24/21
3:00
BRF
1,2-Dichloropropane
ND
0.20
0.072
ND
0.92
0.33
4
9/24/21
3:00
BRF
cis- 1,3 -Dichloropropene
ND
0.20
0.093
ND
0.91
0.42
4
9/24/21
3:00
BRF
trans- 1, 3 -Dichloropropene
ND
0.20
0.062
ND
0.91
0.28
4
9/24/21
3:00
BRF
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)
ND
0.20
0.069
ND
1.4
0.48
4
9/24/21
3:00
BRF
1,4-Dioxane
ND
2.0
0.14
ND
7.2
0.49
4
9/24/21
3:00
BRF
Ethanol
260
60
18
500
110
34
30
9/24/21
3:31
BRF
Ethyl Acetate
1.6
2.0
1.2
L-03, J
5.8
7.2
4.3
4
9/24/21
3:00
BRF
Ethylbenzene
ND
0.20
0.052
ND
0.87
0.22
4
9/24/21
3:00
BRF
4-Ethyltoluene
ND
0.20
0.062
ND
0.98
0.30
4
9/24/21
3:00
BRF
Heptane
ND
0.20
0.082
ND
0.82
0.34
4
9/24/21
3:00
BRF
Hexachlorobutadiene
ND
0.20
0.11
ND
2.1
1.2
4
9/24/21
3:00
BRF
Hexane
ND
8.0
0.66
ND
28
2.3
4
9/24/21
3:00
BRF
2-Hexanone (MBK)
ND
0.20
0.10
ND
0.82
0.41
4
9/24/21
3:00
BRF
Isopropanol
17
8.0
1.8
43
20
4.5
4
9/24/21
3:00
BRF
Methyl tert-Butyl Ether (MTBE)
ND
0.20
0.080
ND
0.72
0.29
4
9/24/21
3:00
BRF
Methylene Chloride
1.7
2.0
0.46
J
5.8
6.9
1.6
4
9/24/21
3:00
BRF
4-Methyl-2-pentanone (MIBK)
ND
0.20
0.10
ND
0.82
0.42
4
9/24/21
3:00
BRF
Naphthalene
ND
0.20
0.13
ND
1.0
0.66
4
9/24/21
3:00
BRF
Propene
ND
8.0
0.67
ND
14
1.2
4
9/24/21
3:00
BRF
Styrene
ND
0.20
0.063
ND
0.85
0.27
4
9/24/21
3:00
BRF
1,1,2,2-Tetrachloroethane
ND
0.20
0.061
ND
1.4
0.42
4
9/24/21
3:00
BRF
Page 13 of 29

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Sample Description/Location:
Work Order: 2111198
Date Received: 9/20/2021
Sub Description/Location:
Initial Vacuum(in Hg): -28
Field Sample #: SGDUP
Canister ID: 2240
Final Vacuum(in Hg): -5
Sample ID: 21I1198-05
Canister Size: 1 liter
Receipt Vacuum(in Hg): -6.3
Sample Matrix: Soil Gas
Flow Controller ID: 4075
Flow Controller Type: Fixed -Orifice
Sampled: 9/17/2021 00:00
Sample Type: 5 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
9/24/21
3:00
BRF
Tetrahydrofuran
5.0
2.0
0.49
15
5.9
1.5
4
9/24/21
3:00
BRF
Toluene
1.4
0.20
0.084
5.2
0.75
0.32
4
9/24/21
3:00
BRF
1,2,4-Trichlorobenzene
ND
0.20
0.14
ND
1.5
1.0
4
9/24/21
3:00
BRF
1, 1, 1 -Trichloroethane
ND
0.20
0.092
ND
1.1
0.50
4
9/24/21
3:00
BRF
1,1,2-Trichloroethane
ND
0.20
0.080
ND
1.1
0.43
4
9/24/21
3:00
BRF
Trichloroethylene
ND
0.20
0.074
ND
1.1
0.40
4
9/24/21
3:00
BRF
Trichlorofluoromethane (Freon 11)
5.0
0.80
0.080
28
4.5
0.45
4
9/24/21
3:00
BRF
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
ND
0.80
0.071
ND
6.1
0.54
4
9/24/21
3:00
BRF
1,2,4-Trimethylbenzene
ND
0.20
0.059
ND
0.98
0.29
4
9/24/21
3:00
BRF
1,3,5-Trimethylbenzene
ND
0.20
0.055
ND
0.98
0.27
4
9/24/21
3:00
BRF
Vinyl Acetate
ND
4.0
0.37
ND
14
1.3
4
9/24/21
3:00
BRF
Vinyl Chloride
ND
0.20
0.079
ND
0.51
0.20
4
9/24/21
3:00
BRF
m&p-Xylene
25
0.40
0.11
110
1.7
0.48
4
9/24/21
3:00
BRF
o-Xylene
20
0.20
0.054
85
0.87
0.23
4
9/24/21
3:00
BRF
Surrogates
% Recovery
% REC Limits
4-Bromofluorobenzene (1)
90.4
70-130
9/24/21
3:31
4-Bromofluorobenzene (1)
96.7
70-130
9/24/21
3:00
Page 14 of 29

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
Sample Extraction Data
Prep Method: TO-15 Prep -EPA TO-15
Lab Number [Field ID1
Batch
Pressure
Dilution
Pre
Dilution
Pre-Dil
Initial
mL
Pre-Dil
Final
mL
Default
Injection
mL
Actual
Injection
mL
Date
21I1198-01 [SG-1]
B290913
1.5
1
N/A
1000
200
75
09/23/21
2111198-OIRE1 [SG-1]
B290913
1.5
1
N/A
1000
200
10
09/23/21
21I1198-02 [SG-2]
B290913
1.5
1
N/A
1000
200
75
09/23/21
21I1198-03 [SG-3]
B290913
1.5
1
N/A
1000
200
75
09/23/21
21I1198-03RE1 [SG-3]
B290913
1.5
1
N/A
1000
200
10
09/23/21
2111198-04 [SG-4]
B290913
1.5
1
N/A
1000
200
75
09/23/21
21I1198-05 [SG-DUP]
B290913
1.5
1
N/A
1000
200
75
09/23/21
2111198-05RE1 [SG-DUP]
B290913
1.5
1
N/A
1000
200
10
09/23/21
Page 15 of 29

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 B290913 - TO-15 Prep
Blank (B290913-BLKl)
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
113-Butadiene
ND
0.020
2-Butanone (MEK)
ND
0.80
Carbon Disulfide
ND
0.20
Carbon Tetrachloride
0.0068
0.020
J
Chlorobenzene
ND
0.020
Chloroethane
ND
0.020
Chloroform
ND
0.020
Chloromethane
ND
0.040
Cyclohexane
ND
0.020
Dibromochloromethane
ND
0.020
1,2-Dibromoethane (EDB)
ND
0.020
1,2-Dichlorobenzene
ND
0.020
1,3-Dichlorobenzene
ND
0.020
114-Dichlorobenzene
ND
0.020
Dichlorodifluoromethane (Freon 12)
ND
0.020
1,1-Dichloroethane
ND
0.020
1,2-Dichloroethane
ND
0.020
1,1-Dichloroethylene
ND
0.020
cis-1,2-Dichloroethylene
ND
0.020
trans-1,2-Dichloroethylene
ND
0.020
1,2-Dichloropropane
ND
0.020
cis- 1,3 -Dichloropropene
ND
0.020
trans- l,3-Dichloropropene
ND
0.020
1,2-Dichloro- 1, 1,2,2-tetrafluoroethane
ND
0.020
(Freon 114)
114-Dioxane
ND
0.20
Ethanol
ND
0.80
Ethyl Acetate
ND
0.20
L-03
Ethylbenzene
0.0084
0.020
J
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 16 of 29

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 B290913 - TO-15 Prep
Blank (B290913-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
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
0.018
0.040 1
o-Xylene
0.0084
0.020 J
Surrogate: 4-Bromofluorobenzene (1)
LCS (B290913-BSI)
7.58
8.00 94.7
Prepared & Analyzed: 09/23/21
70-130
Acetone
4.79
5.00
95.8
70-130
Benzene
4.62
5.00
92.3
70-130
Benzyl chloride
5.16
5.00
103
70-130
Bromodichloromethane
4.75
5.00
95.0
70-130
Bromoform
5.40
5.00
108
70-130
Bromomethane
5.10
5.00
102
70-130
1,3-Butadiene
4.76
5.00
95.2
70-130
2-Butanone (MEK)
4.74
5.00
94.8
70-130
Carbon Disulfide
5.74
5.00
115
70-130
Carbon Tetrachloride
4.67
5.00
93.4
70-130
Chlorobenzene
4.64
5.00
92.7
70-130
Chloroethane
5.25
5.00
105
70-130
Chloroform
5.00
5.00
100
70-130
Chloromethane
4.75
5.00
95.0
70-130
Cyclohexane
4.43
5.00
88.6
70-130
Dibromochloromethane
4.82
5.00
96.5
70-130
1,2-Dibromoethane (EDB)
4.77
5.00
95.5
70-130
1,2-Dichlorobenzene
5.39
5.00
108
70-130
1,3-Dichlorobenzene
5.34
5.00
107
70-130
1,4-Dichlorobenzene
5.13
5.00
103
70-130
Dichlorodifluoromethane (Freon 12)
5.24
5.00
105
70-130
1,1-Dichloroethane
4.86
5.00
97.1
70-130
1,2-Dichloroethane
4.79
5.00
95.9
70-130
1,1-Dichloroethylene
4.97
5.00
99.3
70-130
cis-1,2-Dichloroethylene
4.90
5.00
97.9
70-130
trans-1,2-Dichloroethylene
4.78
5.00
95.5
70-130
1,2-Dichloropropane
4.55
5.00
91.0
70-130
Page 17 of 29

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 B290913 - TO-15 Prep
LCS (B290913-BS1)
Prepared & Analyzed: 09/23/21
cis-1,3-Dichloropropene
5.01
5.00
100
70-130
trans-1,3-Dichloropropene
4.74
5.00
94.8
70-130
1,2-Dichloro- 1, 1,2,2-tetrafluoroethane
4.65
5.00
93.0
70-130
(Freon 114)
1,4-Dioxane
5.16
5.00
103
70-130
Ethanol
6.28
5.00
126
70-130
Ethyl Acetate
3.49
5.00
69.8 *
70-130 L-02
Ethylbenzene
4.89
5.00
97.9
70-130
4-Ethyltoluene
5.22
5.00
104
70-130
Heptane
3.84
5.00
76.7
70-130
Hexachlorobutadiene
5.39
5.00
108
70-130
Hexane
4.86
5.00
97.3
70-130
2-Hexanone (MBK)
5.07
5.00
101
70-130
Isopropanol
4.01
5.00
80.2
70-130
Methyl tert-Butyl Ether (MTBE)
4.70
5.00
93.9
70-130
Methylene Chloride
4.86
5.00
97.2
70-130
4-Methyl-2-pentanone (MIBK)
4.92
5.00
98.5
70-130
Naphthalene
5.64
5.00
113
70-130
Propene
5.04
5.00
101
70-130
Styrene
5.07
5.00
101
70-130
1,1,2,2-Tetrachloroethane
5.05
5.00
101
70-130
Tetrachloroethylene
4.99
5.00
99.7
70-130
Tetrahydrofuran
4.50
5.00
90.0
70-130
Toluene
4.61
5.00
92.1
70-130
1,2,4-Trichlorobenzene
5.67
5.00
113
70-130
1, 1, 1 -Trichloroethane
4.76
5.00
95.2
70-130
1,1,2-Trichloroethane
4.52
5.00
90.5
70-130
Trichloroethylene
5.10
5.00
102
70-130
Trichlorofluoromethane (Freon 11)
5.19
5.00
104
70-130
1, 1,2-Trichloro- 1,2,2-trifluoroethane (Freon
5.97
5.00
119
70-130
113)
1,2,4-Trimethylbenzene
5.07
5.00
101
70-130
1,3,5-Trimethylbenzene
4.86
5.00
97.2
70-130
Vinyl Acetate
6.59
5.00
132 *
70-130 L-01, V-3(
Vinyl Chloride
5.37
5.00
107
70-130
m&p-Xylene
9.61
10.0
96.1
70-130
o-Xylene
5.06
5.00
101
70-130
Surrogate: 4-Bromofluorobenzene (1) 8.19 8.00 102 70-130
Page 18 of 29

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-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.
V-31 Internal Standard is outside of control criteria for this sample. The analytes being reported for this analytical run
are not affected by this I.S. being outside of control criteria. Data validation is not affected.
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 19 of 29

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
TPH Thomas P. Hnitecki
RLF Rebecca Faust
STATION PDF Management Station
KKM Kerry K. McGee
BRF Brittany R. Fisk
ANALYST
Page 20 of 29

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
Initial Cal Check (S063338-ICV1) Lab File ID: K21A259025.13 Analyzed: 09/16/21 23:09
Bromochloromethane (1)
65004
2.989
65617
2.992
99
60 - 140
-0.0030
+/-0.50
1,4-Difluorobenzene(1)
208463
3.592
200888
3.595
104
60-140
-0.0030
+/-0.50
Chlorobenzene-d5(1)
167501
5.185
162778
5.188
103
60-140
-0.0030
+/-0.50
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
Calibration Check (S063579-CCV1) Lab File ID: K21A266004.13 Analyzed: 09/23/21 09:38
Bromochloromethane (1)
56022
2.992
65617
2.992
85
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
171584
3.595
200888
3.595
85
60-140
0.0000
+/-0.50
Chlorobenzene-d5(1)
145496
5.188
162778
5.188
89
60-140
0.0000
+/-0.50
LCS (B290913-BS1 ) Lab File ID: K21A266005.13 Analyzed: 09/23/21 10:10
Bromochloromethane (1)
56833
2.992
56022
2.992
101
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
180913
3.598
171584
3.595
105
60-140
0.0030
+/-0.50
Chlorobenzene-d5(1)
144330
5.188
145496
5.188
99
60-140
0.0000
+/-0.50
Blank (B290913-BLK1) Lab File ID: K21A266008.13 Analyzed: 09/23/21 12:01
Bromochloromethane (1)
62952
2.992
56022
2.992
112
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
180763
3.598
171584
3.595
105
60-140
0.0030
+/-0.50
Chlorobenzene-d5(1)
155964
5.188
145496
5.188
107
60-140
0.0000
+/-0.50
SG-1 (21I1198-01) Lab File ID: K21A266020.13 Analyzed: 09/23/21 21:55
Bromochloromethane (1)
63518
2.995
56022
2.992
113
60 - 140
0.0030
+/-0.50
1,4-Difluorobenzene(1)
189972
3.598
171584
3.595
ill
60-140
0.0030
+/-0.50
Chlorobenzene-d5(1)
166188
5.188
145496
5.188
114
60-140
0.0000
+/-0.50
SG-1 (21I1198-01RE1) Lab File ID: K2IA266021.13 Analyzed: 09/23/21 22:26
Bromochloromethane (1)
72441
2.992
56022
2.992
129
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
242040
3.598
171584
3.595
141
60-140
0.0030
+/-0.50
Chlorobenzene-d5(1)
201355
5.188
145496
5.188
138
60-140
0.0000
+/-0.50
SG-2 (21I1198-02) Lab File ID: K21A266023.1) Analyzed: 09/23/21 23:26
Bromochloromethane (1)
69927
2.996
56022
2.992
125
60 - 140
0.0040
+/-0.50
1,4-Difluorobenzene(1)
230428
3.598
171584
3.595
134
60-140
0.0030
+/-0.50
Chlorobenzene-d5(1)
194707
5.188
145496
5.188
134
60-140
0.0000
+/-0.50
SG-3 (21I1198-03) Lab File ID: K21A266025.13 Analyzed: 09/24/21 00:29
Bromochloromethane (1)
63330
2.991
56022
2.992
113
60 - 140
-0.0010
+/-0.50
1,4-Difluorobenzene(1)
224321
3.597
171584
3.595
131
60-140
0.0020
+/-0.50
Chlorobenzene-d5(1)
173437
5.187
145496
5.188
119
60-140
-0.0010
+/-0.50
Page 21 of 29

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
SG-3 (21I1198-03RE1) Lab File ID: K21A266026.D Analyzed: 09/24/21 01:00
Bromochloromethane (1)
64020
2.996
56022
2.992
114
60 - 140
0.0040
+/-0.50
1,4-Difluorobenzene(1)
198181
3.598
171584
3.595
116
60-140
0.0030
+/-0.50
Chlorobenzene-d5(1)
174214
5.188
145496
5.188
120
60-140
0.0000
+/-0.50
SG4 (21I1198-04) Lab File ID: K21A266028.D Analyzed: 09/24/21 01:59
Bromochloromethane (1)
60670
2.992
56022
2.992
108
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
191255
3.598
171584
3.595
111
60-140
0.0030
+/-0.50
Chlorobenzene-d5(1)
160045
5.188
145496
5.188
110
60-140
0.0000
+/-0.50
SG-DUP (21I1198-05) Lab File ID: K21A266030.D Analyzed: 09/24/21 03:00
Bromochloromethane (1)
57656
2.996
56022
2.992
103
60 - 140
0.0040
+/-0.50
1,4-Difluorobenzene(1)
174239
3.598
171584
3.595
102
60-140
0.0030
+/-0.50
Chlorobenzene-d5(1)
156034
5.188
145496
5.188
107
60-140
0.0000
+/-0.50
SG-DUP (21I1198-05RE1) Lab File ID: K21A26603 LD Analyzed: 09/24/21 03:31
Bromochloromethane (1)
66746
2.996
56022
2.992
119
60 - 140
0.0040
+/-0.50
1,4-Difluorobenzene(1)
216606
3.598
171584
3.595
126
60-140
0.0030
+/-0.50
Chlorobenzene-d5(1)
190388
5.188
145496
5.188
131
60-140
0.0000
+/-0.50
Page 22 of 29

con -test®
A Pace Analytical Laboratory
39 Spruce Street' East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
CONTINUING CALIBRATION CHECK
EPA TO-15
5063579-CCV 1
COMPOUND
TYPE.
CONC. (ppbv)
RESPONSE FACTOR
% DIFF / DRIFT
STD
CCV
ICAL
CCV
MIN (#)
CCV
LIMIT (#)
Acetone
A
5.00
5.18
1.044997
1.08246
3.6
30
Benzene
A
5.00
5.12
0.6772546
0.6939295
2.5
30
Benzyl chloride
A
5.00
5.62
0.4517045
0.5074724
12.3
30
Bromodichloromethane
A
5.00
5.36
0.4576082
0.4909549
7.3
30
Bromoform
A
5.00
5.86
0.4225807
0.4956287
17.3
30
Bromomethane
A
5.00
5.60
0.7358094
0.8248188
12.1
30
1,3-Butadiene
A
5.00
5.25
0.6122438
0.643233
5.1
30
2-Butanone(MEK)
A
5.00
4.75
1.117205
1.061469
-5.0
30
Carbon Disulfide
A
5.00
6.02
1.700674
2.049052
20.5
30
Carbon Tetrachloride
A
5.00
5.20
0.4399405
0.4575998
4.0
30
Chlorobenzene
A
5.00
5.02
0.6710772
0.673844
0.4
30
Chloroethane
A
5.00
5.44
0.4322339
0.4702724
8.8
30
Chloroform
A
5.00
5.35
1.383001
1.480675
7.1
30
Chloromethane
A
5.00
5.34
0.6957364
0.7428225
6.8
30
Cyclohexane
A
5.00
4.97
0.2863864
0.2848284
-0.5
30
Dibromochloromethane
A
5.00
5.24
0.5392756
0.565041
4.8
30
1,2-Dibromoethane (EDB)
A
5.00
5.08
0.4882235
0.4959477
1.6
30
1,2-Dichlorobenzene
A
5.00
5.63
0.5583295
0.6290537
12.7
30
1,3-Dichlorobenzene
A
5.00
5.42
0.3904983
0.4236872
8.5
30
1,4-Dichlorobenzene
A
5.00
5.28
0.6060934
0.6397647
5.6
30
Dichlorodifluoromethane (Freon 12)
A
5.00
5.73
2.131798
2.441955
14.5
30
1,1-Dichloroethane
A
5.00
5.32
1.070749
1.138524
6.3
30
1,2-Dichloroethane
A
5.00
5.05
0.850621
0.8595195
1.0
30
1,1-Dichloroethylene
A
5.00
5.28
1.199799
1.268187
5.7
30
cis-1,2-Dichloroethylene
A
5.00
5.07
0.8960317
0.9092999
1.5
30
trans-1,2-Dichloroethylene
A
5.00
5.33
0.9105593
0.9705616
6.6
30
1,2-Dichloropropane
A
5.00
4.98
0.2471363
0.245981
-0.5
30
cis-1,3-Dichloropropene
A
5.00
4.68
0.282988
0.2650783
-6.3
30
trans- l,3-Dichloropropene
A
5.00
5.01
0.3201369
0.3209344
0.2
30
1,2-Dichloro- 1, 1,2,2-tetrafluoroethane (Freon 1
A
5.00
5.44
2.193098
2.385434
8.8
30
1,4-Dioxane
A
5.00
5.70
0.1252425
0.14268
13.9
30
Ethanol
A
5.00
5.64
0.1614241
0.182157
12.8
30
Ethyl Acetate
A
5.00
4.96
0.2630812
0.2608118
-0.9
30
Ethylbenzene
A
5.00
5.21
1.130441
1.177489
4.2
30
4-Ethyltoluene
A
5.00
5.54
1.136131
1.258239
10.7
30
Heptane
A
5.00
4.64
0.1870834
0.1737132
-7.1
30
Hexachlorobutadiene
A
5.00
5.52
0.353338
0.3902348
10A
30
Hexane
L
5.00
5.39
0.5879851
0.6421763
7.9
30
Page 23 of 29

con -test®
A Pace Analytical Laboratory
39 Spruce Street' East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
CONTINUING CALIBRATION CHECK
EPA TO-15
5063579-CCV 1
COMPOUND
TYPE
CONC. (ppbv)
RESPONSE FACTOR
% DIFF / DRIFT
STD
CCV
ICAL
CCV
MIN (#)
CCV
LIMIT (#)
2-Hexanone (MBK)
A
5.00
5.23
0.4582989
0.4791664
4.6
30
Isopropanol
A
5.00
5.38
1.230091
1.322995
7.6
30
Methyl tert-Butyl Ether (MTBE)
A
5.00
5.11
1.735778
1.775074
2.3
30
Methylene Chloride
A
5.00
5.32
0.7520661
0.8004855
6.4
30
4-Methyl-2-pentanone (MI13K)
A
5.00
5.24
0.1956749
0.2052779
4.9
30
Naphthalene
A
5.00
5.40
0.9756151
1.052873
7.9
30
Propene
A
5.00
5.68
0.5977407
0.6789047
13.6
30
Styrene
A
5.00
5.53
0.6328158
0.6998515
10.6
30
1,1,2,2-Tetrachloroethane
A
5.00
5.34
0.6582366
0.7023368
6.7
30
Tetrachloroethylene
A
5.00
5.41
0.3934633
0.4257657
8.2
30
Tetrahydroforan
A
5.00
4.92
0.6580954
0.6470601
-1.7
30
Toluene
A
5.00
5.04
0.959144
0.9665145
0.8
30
1,2,4-Trichlorobenzene
A
5.00
5.65
0.375898
0.4248529
13.0
30
1, 1, 1 -Trichloroethane
A
5.00
5.56
0.471714
0.5248042
11.3
30
1,1,2-Trichloroethane
A
5.00
4.67
0.3462991
0.3232749
-6.6
30
Trichloroethylene
A
5.00
5.70
0.2556787
0.2913931
14.0
30
Trichlorofluoromethane(Freon 11)
A
5.00
5.62
1.972353
2.215016
12.3
30
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 11
A
5.00
5.74
1.00369
1.151776
14.8
30
1,2,4-Trimethylbenzene
A
5.00
5.41
0.9612681
1.039688
8.2
30
1,3,5-Trimethylbenzene
A
5.00
5.41
0.7473243
0.8087645
8.2
30
Vinyl Acetate
A
5.00
4.69
0.8051633
0.7551034
-6.2
30
Vinyl Chloride
A
5.00
5.55
0.7945618
0.8816536
11.0
30
m&p-Xylene
A
10.0
10.3
0.9266552
0.9567108
3.2
30
o-Xylene
A
5.00
5.38
0.8546217
0.9186782
7.5
30
# Column to be used to flag Response Factor and %Diff/Drift values with an asterisk
* Values outside of QC limits
Page 24 of 29

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 25 of 29

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-trifluoroethane (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 26 of 29

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9/22121, 6:48 PM Detailed Tracking
TRACK ANOTHER SHIPMENT
987548455539 O
ADD NICKNAME
Delivered
Wednesday, September 22, 2021 at 12:05 pm
THIS IS 1 OF 5 PIECES
AM, Ah
DELIVERED
Signed for by: AALINE
GET STATUS UPDATES
OBTAIN PROOF OF DELIVERY
FROM TO
Huntersville, NC US East Longmeadow, MA US
5 Piece Shipment
TRACKING ID
STATUS
SHIP
DELIVERY
HANDLING PIECE
SHIPPER CITY,
RECIPIENT CITY,
DATE
DATE
UNITS
STATE
STATE
987548455539 (master)
Delivered
9/20/21
9/22/21
0
Huntersville NC
EAST LONGMEADOW MA
98754846554D
Delivered
9/20/21
9/22121
0
Huntetsvillc NC
EAST LONGMEADOW MA
987548456550
Delivered
9/20121
9/22/21
0
Huntersville NC
LAST LONG MEADOW MA
987548455561
Delivered
9120/21
9122121
0
Huntersville NC
EAST LONGMEADOW €CIA
987548455572
Delivered
9120/21
9/22/21
0
Huntersville NC
FAST LONGMEADOW MA
Travel i-i dory
TIME ZONE
Local Scan Time NV
https:!lwww.fedex.comlfedextracW?trknbr=987548455539&trkquaI= 12022-987548455539—FDEG Page 28 of 29

OD
I Have Not Confirmed Sample Container
Numbers With Lab Staff Before caonmwtemst
Relinquishing Over
Samples .. . .
k3b�#= ... 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 Prue or False
Client`
Received Byt— Date Time
How were the samples In Cooler On Ice No Ice
received? In Box Ambient Melted ice
Were samples within Temperature
Compliance? 2-6'C�
Was Custody Seal intact?�
W COC R : ?
By Gun # Actual Temp -
By Blank # Actual Temp -
as el�nquished .
Are there any loose caps/valves on any samples?
Is COC in ink/ Legible?
Were Samples Tampered with?
Does Chain Agree With Samples? j
Did COC Include all Client Analysis Sampler Name I
Pertinent Information? Project i ID's —C Collection Dates/Times i
Are Sample Labels filled out and legible? _
Are there Rushes? Who was notified?
Samples are received within holding time?
Proper Media Used? Individually Certified Cans? -F—
Are there Trip Blanks?— Is there enough Volume?
umma Cans
TO-17 Tubes
Radiello
Pufs/TO-11 s
m
Tu
Tedlar
j Page 29 of 29 1

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
September 27, 2021
Scott Young
ECS Southeast - Greensboro, NC
4811 Koger Boulevard
Greensboro, NC 27407
Project Location: Charlotte, NC
Client Job Number:
Project Number: 118148
Laboratory Work Order Number: 21I1199
Enclosed are results of analyses for samples received by the laboratory on September 20, 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 40

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ECS Southeast - Greensboro, NC REPORT DATE: 9/27/2021
4811 Koger Boulevard
Greensboro, NC 27407 PURCHASE ORDER NUMBER:
ATTN: Scott Young
PROJECT NUMBER: 118148
ANALYTICAL SUMMARY
WORK ORDER NUMBER: 21I1199
The results of analyses performed on the following samples submitted to Con -Test, a Pace Analytical Laboratory, are found in this report.
PROJECT LOCATION: Charlotte, NC
FIELD SAMPLE # LAB ID: MATRIX SAMPLE DESCRIPTION TEST SUB LAB
IA-1
21I1199-01
Indoor air
EPA TO-15
IA-2
21I1199-02
Indoor air
EPA TO-15
IA-3
21I1199-03
Indoor air
EPA TO-15
IA-4
21I1199-04
Indoor air
EPA TO-15
IA-DUP
21I1199-05
Indoor air
EPA TO-15
AA-1
21I1199-06
Ambient Air
EPATO-15
Page 2 of 40

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 40

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
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:
Vinyl Acetate
B290913-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 low side.
Analyte & Samples(s) Qualified:
Ethyl Acetate
21I1199-01[IA-1], 21I1199-02[IA-2], 21I1199-03[IA-3], 21I1199-04[IA-4], 21I1199-05[IA-DUP], 21I1199-06[AA-1], B290913-BLKI, B290913-BSI, B290914-BLKI,
B290914-BS1
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
21I1199-04[IA-4], 21I1199-05[IA-DUP], 21I1199-06[AA-1], B290914-BLKI, B290914-BSI, S063580-CCVI
Continuing calibration verification (CCV) did not meet method specifications and was biased on the low side for this compound.
Analyte & Samples(s) Qualified:
Hexachlorobutadiene
21I1199-04[IA-4], 21I1199-05[IA-DUP], 21I1199-06[AA-1], B290914-BLKI, B290914-BSI, S063580-CCVI
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
21I1199-04[IA-4], 21I1199-05[IA-DUP], 21I1199-06[AA-1], B290914-BLKI, B290914-BSI
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
21II199-OI[IA-1], 21I1199-02[IA-2], 21II199-03[IA-3], 5063579-CCVI
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
B290913-BS1, B290914-BSI, 5063579-CCVI, 5063580-CCV1
Page 4 of 40

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 40

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 9/20/2021
Field Sample #: IA-1
Sample ID: 21I1199-01
Sample Matrix: Indoor air
Sampled: 9/16/2021 18:06
Sample Description/Location:
Sub Description/Location:
Canister ID: 2157
Canister Size: 6 liter
Flow Controller ID: 3215
Sample Type: 8 hr
Work Order: 21I1199
Initial Vacuum(in Hg): -29
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -6.3
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
32
1.4
0.84
75
3.3
2.0
0.698
9/24/21
5:36
BRF
Benzene
0.24
0.035
0.0084
0.77
0.11
0.027
0.698
9/24/21
5:36
BRF
Benzyl chloride
ND
0.035
0.016
ND
0.18
0.081
0.698
9/24/21
5:36
BRF
Bromodichloromethane
ND
0.035
0.013
ND
0.23
0.085
0.698
9/24/21
5:36
BRF
Bromoform
ND
0.070
0.013
ND
0.72
0.13
0.698
9/24/21
5:36
BRF
Bromomethane
ND
0.035
0.028
ND
0.14
0.11
0.698
9/24/21
5:36
BRF
1,3-Butadiene
ND
0.035
0.024
ND
0.077
0.054
0.698
9/24/21
5:36
BRF
2-Butanone (MEK)
2.5
1.4
0.12
7.4
4.1
0.34
0.698
9/24/21
5:36
BRF
Carbon Disulfide
ND
0.35
0.089
ND
1.1
0.28
0.698
9/24/21
5:36
BRF
Carbon Tetrachloride
0.077
0.035
0.011
0.49
0.22
0.066
0.698
9/24/21
5:36
BRF
Chlorobenzene
ND
0.035
0.010
ND
0.16
0.048
0.698
9/24/21
5:36
BRF
Chloroethane
ND
0.035
0.025
ND
0.092
0.067
0.698
9/24/21
5:36
BRF
Chloroform
0.080
0.035
0.0084
0.39
0.17
0.041
0.698
9/24/21
5:36
BRF
Chloromethane
0.55
0.070
0.014
1.1
0.14
0.030
0.698
9/24/21
5:36
BRF
Cyclohexane
0.49
0.035
0.023
1.7
0.12
0.079
0.698
9/24/21
5:36
BRF
Dibromochloromethane
ND
0.035
0.012
ND
0.30
0.100
0.698
9/24/21
5:36
BRF
1,2-Dibromoethane (EDB)
ND
0.035
0.0098
ND
0.27
0.075
0.698
9/24/21
5:36
BRF
1,2-Dichlorobenzene
ND
0.035
0.013
ND
0.21
0.078
0.698
9/24/21
5:36
BRF
1,3-Dichlorobenzene
ND
0.035
0.0084
ND
0.21
0.051
0.698
9/24/21
5:36
BRF
1,4-Dichlorobenzene
ND
0.035
0.014
ND
0.21
0.085
0.698
9/24/21
5:36
BRF
Dichlorodifluoromethane (Freon 12)
0.67
0.035
0.011
3.3
0.17
0.053
0.698
9/24/21
5:36
BRF
1, 1 -Dichloroethane
ND
0.035
0.012
ND
0.14
0.047
0.698
9/24/21
5:36
BRF
1,2-Dichloroethane
ND
0.035
0.013
ND
0.14
0.052
0.698
9/24/21
5:36
BRF
1, 1 -Dichloroethylene
ND
0.035
0.014
ND
0.14
0.054
0.698
9/24/21
5:36
BRF
cis-1,2-Dichloroethylene
ND
0.035
0.012
ND
0.14
0.047
0.698
9/24/21
5:36
BRF
trans-1,2-Dichloroethylene
ND
0.035
0.012
ND
0.14
0.048
0.698
9/24/21
5:36
BRF
1,2-Dichloropropane
ND
0.035
0.013
ND
0.16
0.058
0.698
9/24/21
5:36
BRF
cis- 1,3 -Dichloropropene
ND
0.035
0.016
ND
0.16
0.073
0.698
9/24/21
5:36
BRF
trans- 1, 3 -Dichloropropene
ND
0.035
0.011
ND
0.16
0.049
0.698
9/24/21
5:36
BRF
1,2-Dichloro- 1, 1,2,2-tetrafluoroethane (Freon 114)
ND
0.035
0.012
ND
0.24
0.084
0.698
9/24/21
5:36
BRF
1,4-Dioxane
ND
0.35
0.024
ND
1.3
0.085
0.698
9/24/21
5:36
BRF
Ethanol
380
20
6.1
720
38
11
10
9/25/21
1:28
BRF
Ethyl Acetate
ND
0.35
0.21
L-03
ND
1.3
0.75
0.698
9/24/21
5:36
BRF
Ethylbenzene
15
0.035
0.0090
65
0.15
0.039
0.698
9/24/21
5:36
BRF
4-Ethyltoluene
0.12
0.035
0.011
0.60
0.17
0.053
0.698
9/24/21
5:36
BRF
Heptane
ND
0.035
0.014
ND
0.14
0.059
0.698
9/24/21
5:36
BRF
Hexachlorobutadiene
ND
0.035
0.019
ND
0.37
0.21
0.698
9/24/21
5:36
BRF
Hexane
0.78
1.4
0.11
J
2.8
4.9
0.40
0.698
9/24/21
5:36
BRF
2-Hexanone (MBK)
ND
0.035
0.018
ND
0.14
0.072
0.698
9/24/21
5:36
BRF
Isopropanol
14
1.4
0.32
35
3.4
0.79
0.698
9/24/21
5:36
BRF
Methyl tert-Butyl Ether (MTBE)
ND
0.035
0.014
ND
0.13
0.050
0.698
9/24/21
5:36
BRF
Methylene Chloride
1.0
0.35
0.080
3.6
1.2
0.28
0.698
9/24/21
5:36
BRF
4-Methyl-2-pentanone (MIBK)
ND
0.035
0.018
ND
0.14
0.073
0.698
9/24/21
5:36
BRF
Naphthalene
0.51
0.035
0.022
V-35
2.7
0.18
0.12
0.698
9/24/21
5:36
BRF
Propene
ND
1.4
0.12
ND
2.4
0.20
0.698
9/24/21
5:36
BRF
Styrene
ND
0.035
0.011
ND
0.15
0.047
0.698
9/24/21
5:36
BRF
1,1,2,2-Tetrachloroethane
ND
0.035
0.011
ND
0.24
0.073
0.698
9/24/21
5:36
BRF
Page 6 of 40

con -test®
A Pace Analytical Laboratory
Project Location: Charlotte, NC
Date Received: 9/20/2021
Field Sample #: IA-1
Sample ID: 21I1199-01
Sample Matrix: Indoor air
Sampled: 9/ 16/2021 18:06
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Sample Description/Location:
Sub Description/Location:
Canister ID: 2157
Canister Size: 6 liter
Flow Controller ID: 3215
Sample Type: 8 hr
Work Order: 21I1199
Initial Vacuum(in Hg): -29
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -6.3
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
9/24/21
5:36
BRF
Tetrahydrofuran
1.3
0.35
0.086
3.9
1.0
0.25
0.698
9/24/21
5:36
BRF
Toluene
1.0
0.035
0.015
3.9
0.13
0.055
0.698
9/24/21
5:36
BRF
1,2,4-Trichlorobenzene
ND
0.035
0.024
ND
0.26
0.18
0.698
9/24/21
5:36
BRF
1, 1, 1 -Trichloroethane
ND
0.035
0.016
ND
0.19
0.088
0.698
9/24/21
5:36
BRF
1,1,2-Trichloroethane
ND
0.035
0.014
ND
0.19
0.076
0.698
9/24/21
5:36
BRF
Trichloroethylene
ND
0.035
0.013
ND
0.19
0.069
0.698
9/24/21
5:36
BRF
Trichlorofluoromethane (Freon 11)
3.6
0.14
0.014
20
0.78
0.078
0.698
9/24/21
5:36
BRF
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
0.11
0.14
0.012
J 0.87
1.1
0.095
0.698
9/24/21
5:36
BRF
1,2,4-Trimethylbenzene
0.81
0.035
0.010
4.0
0.17
0.051
0.698
9/24/21
5:36
BRF
1,3,5-Trimethylbenzene
0.19
0.035
0.0096
0.93
0.17
0.047
0.698
9/24/21
5:36
BRF
Vinyl Acetate
ND
0.70
0.065
ND
2.5
0.23
0.698
9/24/21
5:36
BRF
Vinyl Chloride
ND
0.035
0.014
ND
0.089
0.035
0.698
9/24/21
5:36
BRF
m&p-Xylene
52
0.070
0.019
230
0.30
0.084
0.698
9/24/21
5:36
BRF
o-Xylene
17
0.035
0.0093
74
0.15
0.041
0.698
9/24/21
5:36
BRF
Surrogates
4-Bromofluorobenzene (1)
4-Bromofluorobenzene (1)
% Recovery
% REC Limits
92.7 70-130
97.0 70-130
9/25/21 1:28
9/24/21 5:36
Page 7 of 40

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 9/20/2021
Field Sample #: IA-2
Sample ID: 21I1199-02
Sample Matrix: Indoor air
Sampled: 9/16/2021 18:30
Sample Description/Location:
Sub Description/Location:
Canister ID: 1212
Canister Size: 6 liter
Flow Controller ID: 3553
Sample Type: 8 hr
Work Order: 21I1199
Initial Vacuum(in Hg): -29
Final Vacuum(in Hg): -6
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
RI
MDL
Dilution
Analyzed
Analyst
Acetone
27
1.4
0.84
64
3.3
2.0
0.698
9/24/21
6:12
BRF
Benzene
0.23
0.035
0.0084
0.75
0.11
0.027
0.698
9/24/21
6:12
BRF
Benzyl chloride
ND
0.035
0.016
ND
0.18
0.081
0.698
9/24/21
6:12
BRF
Bromodichloromethane
ND
0.035
0.013
ND
0.23
0.085
0.698
9/24/21
6:12
BRF
Bromoform
ND
0.070
0.013
ND
0.72
0.13
0.698
9/24/21
6:12
BRF
Bromomethane
ND
0.035
0.028
ND
0.14
0.11
0.698
9/24/21
6:12
BRF
1,3-Butadiene
ND
0.035
0.024
ND
0.077
0.054
0.698
9/24/21
6:12
BRF
2-Butanone (MEK)
1.8
1.4
0.12
5.5
4.1
0.34
0.698
9/24/21
6:12
BRF
Carbon Disulfide
ND
0.35
0.089
ND
1.1
0.28
0.698
9/24/21
6:12
BRF
Carbon Tetrachloride
0.077
0.035
0.011
0.48
0.22
0.066
0.698
9/24/21
6:12
BRF
Chlorobenzene
ND
0.035
0.010
ND
0.16
0.048
0.698
9/24/21
6:12
BRF
Chloroethane
ND
0.035
0.025
ND
0.092
0.067
0.698
9/24/21
6:12
BRF
Chloroform
0.086
0.035
0.0084
0.42
0.17
0.041
0.698
9/24/21
6:12
BRF
Chloromethane
0.57
0.070
0.014
1.2
0.14
0.030
0.698
9/24/21
6:12
BRF
Cyclohexane
0.36
0.035
0.023
1.2
0.12
0.079
0.698
9/24/21
6:12
BRF
Dibromochloromethane
ND
0.035
0.012
ND
0.30
0.100
0.698
9/24/21
6:12
BRF
1,2-Dibromoethane (EDB)
ND
0.035
0.0098
ND
0.27
0.075
0.698
9/24/21
6:12
BRF
1,2-Dichlorobenzene
ND
0.035
0.013
ND
0.21
0.078
0.698
9/24/21
6:12
BRF
1,3-Dichlorobenzene
ND
0.035
0.0084
ND
0.21
0.051
0.698
9/24/21
6:12
BRF
1,4-Dichlorobenzene
ND
0.035
0.014
ND
0.21
0.085
0.698
9/24/21
6:12
BRF
Dichlorodifluoromethane (Freon 12)
0.70
0.035
0.011
3.5
0.17
0.053
0.698
9/24/21
6:12
BRF
1,1-Dichloroethane
ND
0.035
0.012
ND
0.14
0.047
0.698
9/24/21
6:12
BRF
1,2-Dichloroethane
ND
0.035
0.013
ND
0.14
0.052
0.698
9/24/21
6:12
BRF
1,1-Dichloroethylene
ND
0.035
0.014
ND
0.14
0.054
0.698
9/24/21
6:12
BRF
cis-1,2-Dichloroethylene
ND
0.035
0.012
ND
0.14
0.047
0.698
9/24/21
6:12
BRF
trans-1,2-Dichloroethylene
ND
0.035
0.012
ND
0.14
0.048
0.698
9/24/21
6:12
BRF
1,2-Dichloropropane
ND
0.035
0.013
ND
0.16
0.058
0.698
9/24/21
6:12
BRF
cis- 1,3 -Dichloropropene
ND
0.035
0.016
ND
0.16
0.073
0.698
9/24/21
6:12
BRF
trans- 1, 3 -Dichloropropene
ND
0.035
0.011
ND
0.16
0.049
0.698
9/24/21
6:12
BRF
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)
ND
0.035
0.012
ND
0.24
0.084
0.698
9/24/21
6:12
BRF
1,4-Dioxane
ND
0.35
0.024
ND
1.3
0.085
0.698
9/24/21
6:12
BRF
Ethanol
360
20
6.1
670
38
11
10
9/25/21
1:53
BRF
Ethyl Acetate
ND
0.35
0.21
L-03
ND
1.3
0.75
0.698
9/24/21
6:12
BRF
Ethylbenzene
13
0.035
0.0090
54
0.15
0.039
0.698
9/24/21
6:12
BRF
4-Ethyltoluene
0.15
0.035
0.011
0.72
0.17
0.053
0.698
9/24/21
6:12
BRF
Heptane
0.19
0.035
0.014
0.80
0.14
0.059
0.698
9/24/21
6:12
BRF
Hexachlorobutadiene
ND
0.035
0.019
ND
0.37
0.21
0.698
9/24/21
6:12
BRF
Hexane
0.53
1.4
0.11
J
1.9
4.9
0.40
0.698
9/24/21
6:12
BRF
2-Hexanone (MBK)
ND
0.035
0.018
ND
0.14
0.072
0.698
9/24/21
6:12
BRF
Isopropanol
13
1.4
0.32
33
3.4
0.79
0.698
9/24/21
6:12
BRF
Methyl tert-Butyl Ether (MTBE)
ND
0.035
0.014
ND
0.13
0.050
0.698
9/24/21
6:12
BRF
Methylene Chloride
0.35
0.35
0.080
1.2
1.2
0.28
0.698
9/24/21
6:12
BRF
4-Methyl-2-pentanone (MIBK)
ND
0.035
0.018
ND
0.14
0.073
0.698
9/24/21
6:12
BRF
Naphthalene
0.51
0.035
0.022
V-35
2.7
0.18
0.12
0.698
9/24/21
6:12
BRF
Propene
ND
1.4
0.12
ND
2.4
0.20
0.698
9/24/21
6:12
BRF
Styrene
ND
0.035
0.011
ND
0.15
0.047
0.698
9/24/21
6:12
BRF
1,1,2,2-Tetrachloroethane
ND
0.035
0.011
ND
0.24
0.073
0.698
9/24/21
6:12
BRF
Page 8 of 40

con -test®
A Pace Analytical Laboratory
Project Location: Charlotte, NC
Date Received: 9/20/2021
Field Sample #: IA-2
Sample ID: 21I1199-02
Sample Matrix: Indoor air
Sampled: 9/ 16/2021 18:30
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Sample Description/Location:
Sub Description/Location:
Canister ID: 1212
Canister Size: 6 liter
Flow Controller ID: 3553
Sample Type: 8 hr
Work Order: 21I1199
Initial Vacuum(in Hg): -29
Final Vacuum(in Hg): -6
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
0.026
0.035
0.010
J 0.18
0.24
0.070
0.698
9/24/21
6:12
BRF
Tetrahydrofuran
1.3
0.35
0.086
3.8
1.0
0.25
0.698
9/24/21
6:12
BRF
Toluene
0.96
0.035
0.015
3.6
0.13
0.055
0.698
9/24/21
6:12
BRF
1,2,4-Trichlorobenzene
ND
0.035
0.024
ND
0.26
0.18
0.698
9/24/21
6:12
BRF
1, 1, 1 -Trichloroethane
ND
0.035
0.016
ND
0.19
0.088
0.698
9/24/21
6:12
BRF
1,1,2-Trichloroethane
ND
0.035
0.014
ND
0.19
0.076
0.698
9/24/21
6:12
BRF
Trichloroethylene
ND
0.035
0.013
ND
0.19
0.069
0.698
9/24/21
6:12
BRF
Trichlorofluoromethane (Freon 11)
3.1
0.14
0.014
18
0.78
0.078
0.698
9/24/21
6:12
BRF
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
0.12
0.14
0.012
J 0.95
1.1
0.095
0.698
9/24/21
6:12
BRF
1,2,4-Trimethylbenzene
0.73
0.035
0.010
3.6
0.17
0.051
0.698
9/24/21
6:12
BRF
1,3,5-Trimethylbenzene
0.17
0.035
0.0096
0.84
0.17
0.047
0.698
9/24/21
6:12
BRF
Vinyl Acetate
ND
0.70
0.065
ND
2.5
0.23
0.698
9/24/21
6:12
BRF
Vinyl Chloride
ND
0.035
0.014
ND
0.089
0.035
0.698
9/24/21
6:12
BRF
m&p-Xylene
44
0.070
0.019
190
0.30
0.084
0.698
9/24/21
6:12
BRF
o-Xylene
14
0.035
0.0093
62
0.15
0.041
0.698
9/24/21
6:12
BRF
Surrogates
4-Bromofluorobenzene (1)
4-Bromofluorobenzene (1)
% Recovery
% REC Limits
93.0 70-130
95.4 70-130
9/25/21 1:53
9/24/21 6:12
Page 9 of 40

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 9/20/2021
Field Sample #: IA-3
Sample ID: 21I1199-03
Sample Matrix: Indoor air
Sampled: 9/16/2021 18:30
Sample Description/Location:
Sub Description/Location:
Canister ID: 2223
Canister Size: 6 liter
Flow Controller ID: 3571
Sample Type: 8 hr
Work Order: 21I1199
Initial Vacuum(in Hg): -29
Final Vacuum(in Hg): -6
Receipt Vacuum(in Hg): -5.2
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
35
1.4
0.84
82
3.3
2.0
0.698
9/24/21
6:50
BRF
Benzene
0.28
0.035
0.0084
0.89
0.11
0.027
0.698
9/24/21
6:50
BRF
Benzyl chloride
ND
0.035
0.016
ND
0.18
0.081
0.698
9/24/21
6:50
BRF
Bromodichloromethane
ND
0.035
0.013
ND
0.23
0.085
0.698
9/24/21
6:50
BRF
Bromoform
ND
0.070
0.013
ND
0.72
0.13
0.698
9/24/21
6:50
BRF
Bromomethane
ND
0.035
0.028
ND
0.14
0.11
0.698
9/24/21
6:50
BRF
1,3-Butadiene
ND
0.035
0.024
ND
0.077
0.054
0.698
9/24/21
6:50
BRF
2-Butanone (MEK)
1.9
1.4
0.12
5.5
4.1
0.34
0.698
9/24/21
6:50
BRF
Carbon Disulfide
ND
0.35
0.089
ND
1.1
0.28
0.698
9/24/21
6:50
BRF
Carbon Tetrachloride
0.093
0.035
0.011
0.59
0.22
0.066
0.698
9/24/21
6:50
BRF
Chlorobenzene
ND
0.035
0.010
ND
0.16
0.048
0.698
9/24/21
6:50
BRF
Chloroethane
ND
0.035
0.025
ND
0.092
0.067
0.698
9/24/21
6:50
BRF
Chloroform
0.17
0.035
0.0084
0.83
0.17
0.041
0.698
9/24/21
6:50
BRF
Chloromethane
0.56
0.070
0.014
1.2
0.14
0.030
0.698
9/24/21
6:50
BRF
Cyclohexane
0.94
0.035
0.023
3.2
0.12
0.079
0.698
9/24/21
6:50
BRF
Dibromochloromethane
ND
0.035
0.012
ND
0.30
0.100
0.698
9/24/21
6:50
BRF
1,2-Dibromoethane (EDB)
ND
0.035
0.0098
ND
0.27
0.075
0.698
9/24/21
6:50
BRF
1,2-Dichlorobenzene
ND
0.035
0.013
ND
0.21
0.078
0.698
9/24/21
6:50
BRF
1,3-Dichlorobenzene
ND
0.035
0.0084
ND
0.21
0.051
0.698
9/24/21
6:50
BRF
1,4-Dichlorobenzene
ND
0.035
0.014
ND
0.21
0.085
0.698
9/24/21
6:50
BRF
Dichlorodifluoromethane (Freon 12)
0.62
0.035
0.011
3.1
0.17
0.053
0.698
9/24/21
6:50
BRF
1,1-Dichloroethane
ND
0.035
0.012
ND
0.14
0.047
0.698
9/24/21
6:50
BRF
1,2-Dichloroethane
0.18
0.035
0.013
0.72
0.14
0.052
0.698
9/24/21
6:50
BRF
1,1-Dichloroethylene
ND
0.035
0.014
ND
0.14
0.054
0.698
9/24/21
6:50
BRF
cis-1,2-Dichloroethylene
ND
0.035
0.012
ND
0.14
0.047
0.698
9/24/21
6:50
BRF
trans-1,2-Dichloroethylene
ND
0.035
0.012
ND
0.14
0.048
0.698
9/24/21
6:50
BRF
1,2-Dichloropropane
ND
0.035
0.013
ND
0.16
0.058
0.698
9/24/21
6:50
BRF
cis- 1,3 -Dichloropropene
ND
0.035
0.016
ND
0.16
0.073
0.698
9/24/21
6:50
BRF
trans- 1, 3 -Dichloropropene
ND
0.035
0.011
ND
0.16
0.049
0.698
9/24/21
6:50
BRF
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)
ND
0.035
0.012
ND
0.24
0.084
0.698
9/24/21
6:50
BRF
1,4-Dioxane
ND
0.35
0.024
ND
1.3
0.085
0.698
9/24/21
6:50
BRF
Ethanol
340
20
6.1
650
38
11
10
9/25/21
2:18
BRF
Ethyl Acetate
7.9
0.35
0.21
L-03 28
1.3
0.75
0.698
9/24/21
6:50
BRF
Ethylbenzene
11
0.035
0.0090
50
0.15
0.039
0.698
9/24/21
6:50
BRF
4-Ethyltoluene
ND
0.035
0.011
ND
0.17
0.053
0.698
9/24/21
6:50
BRF
Heptane
ND
0.035
0.014
ND
0.14
0.059
0.698
9/24/21
6:50
BRF
Hexachlorobutadiene
ND
0.035
0.019
ND
0.37
0.21
0.698
9/24/21
6:50
BRF
Hexane
ND
1.4
0.11
ND
4.9
0.40
0.698
9/24/21
6:50
BRF
2-Hexanone (MBK)
ND
0.035
0.018
ND
0.14
0.072
0.698
9/24/21
6:50
BRF
Isopropanol
5.9
1.4
0.32
15
3.4
0.79
0.698
9/24/21
6:50
BRF
Methyl tert-Butyl Ether (MTBE)
ND
0.035
0.014
ND
0.13
0.050
0.698
9/24/21
6:50
BRF
Methylene Chloride
0.53
0.35
0.080
1.8
1.2
0.28
0.698
9/24/21
6:50
BRF
4-Methyl-2-pentanone (MIBK)
ND
0.035
0.018
ND
0.14
0.073
0.698
9/24/21
6:50
BRF
Naphthalene
0.31
0.035
0.022
V-35 1.6
0.18
0.12
0.698
9/24/21
6:50
BRF
Propene
ND
1.4
0.12
ND
2.4
0.20
0.698
9/24/21
6:50
BRF
Styrene
0.37
0.035
0.011
1.6
0.15
0.047
0.698
9/24/21
6:50
BRF
1,1,2,2-Tetrachloroethane
ND
0.035
0.011
ND
0.24
0.073
0.698
9/24/21
6:50
BRF
Page 10 of 40

con -test®
A Pace Analytical Laboratory
Project Location: Charlotte, NC
Date Received: 9/20/2021
Field Sample #: IA-3
Sample ID: 21I1199-03
Sample Matrix: Indoor air
Sampled: 9/ 16/2021 18:30
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Sample Description/Location:
Sub Description/Location:
Canister ID: 2223
Canister Size: 6 liter
Flow Controller ID: 3571
Sample Type: 8 hr
Work Order: 21I1199
Initial Vacuum(in Hg): -29
Final Vacuum(in Hg): -6
Receipt Vacuum(in Hg): -5.2
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
0.051
0.035
0.010
0.35
0.24
0.070
0.698
9/24/21
6:50
BRF
Tetrahydrofuran
1.4
0.35
0.086
4.0
1.0
0.25
0.698
9/24/21
6:50
BRF
Toluene
3.7
0.035
0.015
14
0.13
0.055
0.698
9/24/21
6:50
BRF
1,2,4-Trichlorobenzene
ND
0.035
0.024
ND
0.26
0.18
0.698
9/24/21
6:50
BRF
1, 1, 1 -Trichloroethane
ND
0.035
0.016
ND
0.19
0.088
0.698
9/24/21
6:50
BRF
1,1,2-Trichloroethane
0.24
0.035
0.014
1.3
0.19
0.076
0.698
9/24/21
6:50
BRF
Trichloroethylene
ND
0.035
0.013
ND
0.19
0.069
0.698
9/24/21
6:50
BRF
Trichlorofluoromethane (Freon 11)
1.9
0.14
0.014
10
0.78
0.078
0.698
9/24/21
6:50
BRF
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
0.093
0.14
0.012
J 0.72
1.1
0.095
0.698
9/24/21
6:50
BRF
1,2,4-Trimethylbenzene
0.49
0.035
0.010
2.4
0.17
0.051
0.698
9/24/21
6:50
BRF
1,3,5-Trimethylbenzene
0.10
0.035
0.0096
0.50
0.17
0.047
0.698
9/24/21
6:50
BRF
Vinyl Acetate
ND
0.70
0.065
ND
2.5
0.23
0.698
9/24/21
6:50
BRF
Vinyl Chloride
ND
0.035
0.014
ND
0.089
0.035
0.698
9/24/21
6:50
BRF
m&p-Xylene
40
0.070
0.019
170
0.30
0.084
0.698
9/24/21
6:50
BRF
o-Xylene
13
0.035
0.0093
57
0.15
0.041
0.698
9/24/21
6:50
BRF
Surrogates
4-Bromofluorobenzene (1)
4-Bromofluorobenzene (1)
% Recovery
% REC Limits
92.2 70-130
98.8 70-130
9/25/21 2:18
9/24/21 6:50
Page 11 of 40

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 9/20/2021
Field Sample #: IA-4
Sample ID: 21I1199-04
Sample Matrix: Indoor air
Sampled: 9/16/2021 17:09
Sample Description/Location:
Sub Description/Location:
Canister ID: 2154
Canister Size: 6 liter
Flow Controller ID: 3241
Sample Type: 8 hr
Work Order: 21I1199
Initial Vacuum(in Hg): -30
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -5.1
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
13
1.4
0.84
31
3.3
2.0
0.698
9/23/21 19:42
BRF
Benzene
0.29
0.035
0.0084
0.92
0.11
0.027
0.698
9/23/21 19:42
BRF
Benzyl chloride
ND
0.035
0.016
ND
0.18
0.081
0.698
9/23/21 19:42
BRF
Bromodichloromethane
ND
0.035
0.013
ND
0.23
0.085
0.698
9/23/21 19:42
BRF
Bromoform
ND
0.035
0.013
ND
0.36
0.13
0.698
9/23/21 19:42
BRF
Bromomethane
ND
0.035
0.028
ND
0.14
0.11
0.698
9/23/21 19:42
BRF
1,3-Butadiene
ND
0.035
0.024
ND
0.077
0.054
0.698
9/23/21 19:42
BRF
2-Butanone (MEK)
1.3
1.4
0.12
J
3.8
4.1
0.34
0.698
9/23/21 19:42
BRF
Carbon Disulfide
ND
0.35
0.089
ND
1.1
0.28
0.698
9/23/21 19:42
BRF
Carbon Tetrachloride
0.061
0.035
0.011
0.38
0.22
0.066
0.698
9/23/21 19:42
BRF
Chlorobenzene
ND
0.035
0.010
ND
0.16
0.048
0.698
9/23/21 19:42
BRF
Chloroethane
ND
0.035
0.025
ND
0.092
0.067
0.698
9/23/21 19:42
BRF
Chloroform
0.060
0.035
0.0084
0.29
0.17
0.041
0.698
9/23/21 19:42
BRF
Chloromethane
0.72
0.070
0.014
1.5
0.14
0.030
0.698
9/23/21 19:42
BRF
Cyclohexane
0.41
0.035
0.023
1.4
0.12
0.079
0.698
9/23/21 19:42
BRF
Dibromochloromethane
ND
0.035
0.012
ND
0.30
0.100
0.698
9/23/21 19:42
BRF
1,2-Dibromoethane (EDB)
ND
0.035
0.0098
ND
0.27
0.075
0.698
9/23/21 19:42
BRF
1,2-Dichlorobenzene
ND
0.035
0.013
ND
0.21
0.078
0.698
9/23/21 19:42
BRF
1,3-Dichlorobenzene
ND
0.035
0.0084
ND
0.21
0.051
0.698
9/23/21 19:42
BRF
1,4-Dichlorobenzene
ND
0.035
0.014
ND
0.21
0.085
0.698
9/23/21 19:42
BRF
Dichlorodifluoromethane (Freon 12)
0.69
0.035
0.011
3.4
0.17
0.053
0.698
9/23/21 19:42
BRF
1,1-Dichloroethane
ND
0.035
0.012
ND
0.14
0.047
0.698
9/23/21 19:42
BRF
1,2-Dichloroethane
ND
0.035
0.013
ND
0.14
0.052
0.698
9/23/21 19:42
BRF
1,1-Dichloroethylene
ND
0.035
0.014
ND
0.14
0.054
0.698
9/23/21 19:42
BRF
cis-1,2-Dichloroethylene
ND
0.035
0.012
ND
0.14
0.047
0.698
9/23/21 19:42
BRF
trans-1,2-Dichloroethylene
ND
0.035
0.012
ND
0.14
0.048
0.698
9/23/21 19:42
BRF
1,2-Dichloropropane
ND
0.035
0.013
ND
0.16
0.058
0.698
9/23/21 19:42
BRF
cis- 1,3 -Dichloropropene
ND
0.035
0.016
ND
0.16
0.073
0.698
9/23/21 19:42
BRF
trans- 1, 3 -Dichloropropene
ND
0.035
0.011
ND
0.16
0.049
0.698
9/23/21 19:42
BRF
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)
ND
0.035
0.012
ND
0.24
0.084
0.698
9/23/21 19:42
BRF
1,4-Dioxane
ND
0.35
0.024
ND
1.3
0.085
0.698
9/23/21 19:42
BRF
Ethanol
410
20
6.1
760
38
11
10
9/24/21 6:42
BRF
Ethyl Acetate
ND
0.35
0.21
L-03, V-34
ND
1.3
0.75
0.698
9/23/21 19:42
BRF
Ethylbenzene
16
0.035
0.0090
69
0.15
0.039
0.698
9/23/21 19:42
BRF
4-Ethyltoluene
0.082
0.035
0.011
0.40
0.17
0.053
0.698
9/23/21 19:42
BRF
Heptane
0.21
0.035
0.014
0.85
0.14
0.059
0.698
9/23/21 19:42
BRF
Hexachlorobutadiene
ND
0.035
0.019
V-05
ND
0.37
0.21
0.698
9/23/21 19:42
BRF
Hexane
0.41
1.4
0.11
J
1.4
4.9
0.40
0.698
9/23/21 19:42
BRF
2-Hexanone (MBK)
ND
0.070
0.018
ND
0.29
0.072
0.698
9/23/21 19:42
BRF
Isopropanol
3.1
1.4
0.32
7.7
3.4
0.79
0.698
9/23/21 19:42
BRF
Methyl tert-Butyl Ether (MTBE)
ND
0.035
0.014
ND
0.13
0.050
0.698
9/23/21 19:42
BRF
Methylene Chloride
0.23
0.35
0.080
J
0.81
1.2
0.28
0.698
9/23/21 19:42
BRF
4-Methyl-2-pentanone (MIBK)
ND
0.035
0.018
ND
0.14
0.073
0.698
9/23/21 19:42
BRF
Naphthalene
0.28
0.035
0.022
1.5
0.18
0.12
0.698
9/23/21 19:42
BRF
Propene
ND
1.4
0.12
ND
2.4
0.20
0.698
9/23/21 19:42
BRF
Styrene
0.11
0.035
0.011
0.46
0.15
0.047
0.698
9/23/21 19:42
BRF
1,1,2,2-Tetrachloroethane
ND
0.035
0.011
ND
0.24
0.073
0.698
9/23/21 19:42
BRF
Page 12 of 40

con -test®
A Pace Analytical Laboratory
Project Location: Charlotte, NC
Date Received: 9/20/2021
Field Sample #: IA-4
Sample ID: 21I1199-04
Sample Matrix: Indoor air
Sampled: 9/ 16/2021 17:09
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Sample Description/Location:
Sub Description/Location:
Canister ID: 2154
Canister Size: 6 liter
Flow Controller ID: 3241
Sample Type: 8 hr
Work Order: 21I1199
Initial Vacuum(in Hg): -30
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -5.1
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
Tetrachloroethylene
0.017
0.035
0.010
J 0.11
0.24
0.070
0.698
9/23/21 19:42
BRF
Tetrahydrofuran
1.2
0.35
0.086
3.6
1.0
0.25
0.698
9/23/21 19:42
BRF
Toluene
0.89
0.035
0.015
3.3
0.13
0.055
0.698
9/23/21 19:42
BRF
1,2,4-Trichlorobenzene
ND
0.070
0.024
V-04 ND
0.52
0.18
0.698
9/23/21 19:42
BRF
1, 1, 1 -Trichloroethane
ND
0.035
0.016
ND
0.19
0.088
0.698
9/23/21 19:42
BRF
1,1,2-Trichloroethane
ND
0.035
0.014
ND
0.19
0.076
0.698
9/23/21 19:42
BRF
Trichloroethylene
ND
0.035
0.013
ND
0.19
0.069
0.698
9/23/21 19:42
BRF
Trichlorofluoromethane (Freon 11)
2.2
0.14
0.014
12
0.78
0.078
0.698
9/23/21 19:42
BRF
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
0.080
0.14
0.012
J 0.61
1.1
0.095
0.698
9/23/21 19:42
BRF
1,2,4-Trimethylbenzene
0.43
0.035
0.010
2.1
0.17
0.051
0.698
9/23/21 19:42
BRF
1,3,5-Trimethylbenzene
0.073
0.035
0.0096
0.36
0.17
0.047
0.698
9/23/21 19:42
BRF
Vinyl Acetate
ND
0.70
0.065
ND
2.5
0.23
0.698
9/23/21 19:42
BRF
Vinyl Chloride
ND
0.035
0.014
ND
0.089
0.035
0.698
9/23/21 19:42
BRF
m&p-Xylene
53
0.070
0.019
230
0.30
0.084
0.698
9/23/21 19:42
BRF
o-Xylene
17
0.035
0.0093
73
0.15
0.041
0.698
9/23/21 19:42
BRF
Surrogates
4-Bromofluorobenzene (1)
4-Bromofluorobenzene (1)
% Recovery
% REC Limits
93.9 70-130
96.3 70-130
9/24/21 6:42
9/23/21 19:42
Page 13 of 40

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 9/20/2021
Field Sample #: IA-DUP
Sample ID: 21I1199-05
Sample Matrix: Indoor air
Sampled: 9/16/2021 00:00
Sample Description/Location:
Sub Description/Location:
Canister ID: 1958
Canister Size: 6 liter
Flow Controller ID: 3643
Sample Type: 8 hr
Work Order: 21I1199
Initial Vacuum(in Hg): -30
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -6.2
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
6.8
1.4
0.84
16
3.3
2.0
0.698
9/23/21 20:14
BRF
Benzene
0.13
0.035
0.0084
0.43
0.11
0.027
0.698
9/23/21 20:14
BRF
Benzyl chloride
ND
0.035
0.016
ND
0.18
0.081
0.698
9/23/21 20:14
BRF
Bromodichloromethane
ND
0.035
0.013
ND
0.23
0.085
0.698
9/23/21 20:14
BRF
Bromoform
ND
0.035
0.013
ND
0.36
0.13
0.698
9/23/21 20:14
BRF
Bromomethane
ND
0.035
0.028
ND
0.14
0.11
0.698
9/23/21 20:14
BRF
1,3-Butadiene
ND
0.035
0.024
ND
0.077
0.054
0.698
9/23/21 20:14
BRF
2-Butanone (MEK)
0.46
1.4
0.12
J
1.3
4.1
0.34
0.698
9/23/21 20:14
BRF
Carbon Disulfide
ND
0.35
0.089
ND
1.1
0.28
0.698
9/23/21 20:14
BRF
Carbon Tetrachloride
0.070
0.035
0.011
0.44
0.22
0.066
0.698
9/23/21 20:14
BRF
Chlorobenzene
ND
0.035
0.010
ND
0.16
0.048
0.698
9/23/21 20:14
BRF
Chloroethane
ND
0.035
0.025
ND
0.092
0.067
0.698
9/23/21 20:14
BRF
Chloroform
0.056
0.035
0.0084
0.27
0.17
0.041
0.698
9/23/21 20:14
BRF
Chloromethane
0.62
0.070
0.014
1.3
0.14
0.030
0.698
9/23/21 20:14
BRF
Cyclohexane
ND
0.035
0.023
ND
0.12
0.079
0.698
9/23/21 20:14
BRF
Dibromochloromethane
ND
0.035
0.012
ND
0.30
0.100
0.698
9/23/21 20:14
BRF
1,2-Dibromoethane (EDB)
ND
0.035
0.0098
ND
0.27
0.075
0.698
9/23/21 20:14
BRF
1,2-Dichlorobenzene
ND
0.035
0.013
ND
0.21
0.078
0.698
9/23/21 20:14
BRF
1,3-Dichlorobenzene
ND
0.035
0.0084
ND
0.21
0.051
0.698
9/23/21 20:14
BRF
1,4-Dichlorobenzene
ND
0.035
0.014
ND
0.21
0.085
0.698
9/23/21 20:14
BRF
Dichlorodifluoromethane (Freon 12)
0.54
0.035
0.011
2.7
0.17
0.053
0.698
9/23/21 20:14
BRF
1,1-Dichloroethane
ND
0.035
0.012
ND
0.14
0.047
0.698
9/23/21 20:14
BRF
1,2-Dichloroethane
ND
0.035
0.013
ND
0.14
0.052
0.698
9/23/21 20:14
BRF
1,1-Dichloroethylene
ND
0.035
0.014
ND
0.14
0.054
0.698
9/23/21 20:14
BRF
cis-1,2-Dichloroethylene
ND
0.035
0.012
ND
0.14
0.047
0.698
9/23/21 20:14
BRF
trans-1,2-Dichloroethylene
ND
0.035
0.012
ND
0.14
0.048
0.698
9/23/21 20:14
BRF
1,2-Dichloropropane
ND
0.035
0.013
ND
0.16
0.058
0.698
9/23/21 20:14
BRF
cis- 1,3 -Dichloropropene
ND
0.035
0.016
ND
0.16
0.073
0.698
9/23/21 20:14
BRF
trans- 1, 3 -Dichloropropene
ND
0.035
0.011
ND
0.16
0.049
0.698
9/23/21 20:14
BRF
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)
0.020
0.035
0.012
J
0.14
0.24
0.084
0.698
9/23/21 20:14
BRF
1,4-Dioxane
ND
0.35
0.024
ND
1.3
0.085
0.698
9/23/21 20:14
BRF
Ethanol
11
1.4
0.42
20
2.6
0.80
0.698
9/23/21 20:14
BRF
Ethyl Acetate
ND
0.35
0.21
L-03, V-34
ND
1.3
0.75
0.698
9/23/21 20:14
BRF
Ethylbenzene
0.084
0.035
0.0090
0.36
0.15
0.039
0.698
9/23/21 20:14
BRF
4-Ethyltoluene
ND
0.035
0.011
ND
0.17
0.053
0.698
9/23/21 20:14
BRF
Heptane
0.084
0.035
0.014
0.35
0.14
0.059
0.698
9/23/21 20:14
BRF
Hexachlorobutadiene
ND
0.035
0.019
V-05
ND
0.37
0.21
0.698
9/23/21 20:14
BRF
Hexane
0.21
1.4
0.11
J
0.75
4.9
0.40
0.698
9/23/21 20:14
BRF
2-Hexanone (MBK)
ND
0.070
0.018
ND
0.29
0.072
0.698
9/23/21 20:14
BRF
Isopropanol
0.86
1.4
0.32
J
2.1
3.4
0.79
0.698
9/23/21 20:14
BRF
Methyl tert-Butyl Ether (MTBE)
ND
0.035
0.014
ND
0.13
0.050
0.698
9/23/21 20:14
BRF
Methylene Chloride
0.51
0.35
0.080
1.8
1.2
0.28
0.698
9/23/21 20:14
BRF
4-Methyl-2-pentanone (MIBK)
ND
0.035
0.018
ND
0.14
0.073
0.698
9/23/21 20:14
BRF
Naphthalene
0.036
0.035
0.022
0.19
0.18
0.12
0.698
9/23/21 20:14
BRF
Propene
ND
1.4
0.12
ND
2.4
0.20
0.698
9/23/21 20:14
BRF
Styrene
0.028
0.035
0.011
J
0.12
0.15
0.047
0.698
9/23/21 20:14
BRF
1,1,2,2-Tetrachloroethane
ND
0.035
0.011
ND
0.24
0.073
0.698
9/23/21 20:14
BRF
Page 14 of 40

con -test®
A Pace Analytical Laboratory
Project Location: Charlotte, NC
Date Received: 9/20/2021
Field Sample #: IA-DUP
Sample ID: 21I1199-05
Sample Matrix: Indoor air
Sampled: 9/ 16/2021 00:00
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Sample Description/Location:
Sub Description/Location:
Canister ID: 1958
Canister Size: 6 liter
Flow Controller ID: 3643
Sample Type: 8 hr
Work Order: 21I1199
Initial Vacuum(in Hg): -30
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -6.2
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
0.013
0.035
0.010
J
0.085
0.24
0.070
0.698
9/23/21 20:14
BRF
Tetrahydrofuran
ND
0.35
0.086
ND
1.0
0.25
0.698
9/23/21 20:14
BRF
Toluene
0.35
0.035
0.015
1.3
0.13
0.055
0.698
9/23/21 20:14
BRF
1,2,4-Trichlorobenzene
ND
0.070
0.024
V-04
ND
0.52
0.18
0.698
9/23/21 20:14
BRF
1, 1, 1 -Trichloroethane
ND
0.035
0.016
ND
0.19
0.088
0.698
9/23/21 20:14
BRF
1,1,2-Trichloroethane
ND
0.035
0.014
ND
0.19
0.076
0.698
9/23/21 20:14
BRF
Trichloroethylene
ND
0.035
0.013
ND
0.19
0.069
0.698
9/23/21 20:14
BRF
Trichlorofluoromethane (Freon 11)
0.26
0.14
0.014
1.4
0.78
0.078
0.698
9/23/21 20:14
BRF
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
0.085
0.14
0.012
J
0.65
1.1
0.095
0.698
9/23/21 20:14
BRF
1,2,4-Trimethylbenzene
0.042
0.035
0.010
0.21
0.17
0.051
0.698
9/23/21 20:14
BRF
1,3,5-Trimethylbenzene
0.011
0.035
0.0096
J
0.055
0.17
0.047
0.698
9/23/21 20:14
BRF
Vinyl Acetate
ND
0.70
0.065
ND
2.5
0.23
0.698
9/23/21 20:14
BRF
Vinyl Chloride
ND
0.035
0.014
ND
0.089
0.035
0.698
9/23/21 20:14
BRF
m&p-Xylene
0.27
0.070
0.019
1.2
0.30
0.084
0.698
9/23/21 20:14
BRF
o-Xylene
0.11
0.035
0.0093
0.46
0.15
0.041
0.698
9/23/21 20:14
BRF
Surrogates
4-Bromofluorobenzene (1)
% Recovery
92.9
% REC Limits
70-130
9/23/21 20:14
Page 15 of 40

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Charlotte, NC
Date Received: 9/20/2021
Field Sample #: AA-1
Sample ID: 21I1199-06
Sample Matrix: Ambient Air
Sampled: 9/16/2021 18:30
Sample Description/Location:
Sub Description/Location:
Canister ID: 1104
Canister Size: 6 liter
Flow Controller ID: 3349
Sample Type: 8 hr
Work Order: 21I1199
Initial Vacuum(in Hg): -28
Final Vacuum(in Hg): -6
Receipt Vacuum(in Hg): -6.8
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
27
1.4
0.84
64
3.3
2.0
0.698
9/23/21 20:47
BRF
Benzene
0.25
0.035
0.0084
0.81
0.11
0.027
0.698
9/23/21 20:47
BRF
Benzyl chloride
ND
0.035
0.016
ND
0.18
0.081
0.698
9/23/21 20:47
BRF
Bromodichloromethane
ND
0.035
0.013
ND
0.23
0.085
0.698
9/23/21 20:47
BRF
Bromoform
ND
0.035
0.013
ND
0.36
0.13
0.698
9/23/21 20:47
BRF
Bromomethane
ND
0.035
0.028
ND
0.14
0.11
0.698
9/23/21 20:47
BRF
1,3-Butadiene
ND
0.035
0.024
ND
0.077
0.054
0.698
9/23/21 20:47
BRF
2-Butanone (MEK)
2.0
1.4
0.12
5.8
4.1
0.34
0.698
9/23/21 20:47
BRF
Carbon Disulfide
ND
0.35
0.089
ND
1.1
0.28
0.698
9/23/21 20:47
BRF
Carbon Tetrachloride
0.068
0.035
0.011
0.43
0.22
0.066
0.698
9/23/21 20:47
BRF
Chlorobenzene
ND
0.035
0.010
ND
0.16
0.048
0.698
9/23/21 20:47
BRF
Chloroethane
ND
0.035
0.025
ND
0.092
0.067
0.698
9/23/21 20:47
BRF
Chloroform
0.062
0.035
0.0084
0.30
0.17
0.041
0.698
9/23/21 20:47
BRF
Chloromethane
0.63
0.070
0.014
1.3
0.14
0.030
0.698
9/23/21 20:47
BRF
Cyclohexane
0.43
0.035
0.023
1.5
0.12
0.079
0.698
9/23/21 20:47
BRF
Dibromochloromethane
ND
0.035
0.012
ND
0.30
0.100
0.698
9/23/21 20:47
BRF
1,2-Dibromoethane (EDB)
ND
0.035
0.0098
ND
0.27
0.075
0.698
9/23/21 20:47
BRF
1,2-Dichlorobenzene
ND
0.035
0.013
ND
0.21
0.078
0.698
9/23/21 20:47
BRF
1,3-Dichlorobenzene
ND
0.035
0.0084
ND
0.21
0.051
0.698
9/23/21 20:47
BRF
1,4-Dichlorobenzene
ND
0.035
0.014
ND
0.21
0.085
0.698
9/23/21 20:47
BRF
Dichlorodifluoromethane (Freon 12)
0.70
0.035
0.011
3.5
0.17
0.053
0.698
9/23/21 20:47
BRF
1,1-Dichloroethane
ND
0.035
0.012
ND
0.14
0.047
0.698
9/23/21 20:47
BRF
1,2-Dichloroethane
0.028
0.035
0.013
J
0.11
0.14
0.052
0.698
9/23/21 20:47
BRF
1,1-Dichloroethylene
ND
0.035
0.014
ND
0.14
0.054
0.698
9/23/21 20:47
BRF
cis-1,2-Dichloroethylene
ND
0.035
0.012
ND
0.14
0.047
0.698
9/23/21 20:47
BRF
trans-1,2-Dichloroethylene
ND
0.035
0.012
ND
0.14
0.048
0.698
9/23/21 20:47
BRF
1,2-Dichloropropane
ND
0.035
0.013
ND
0.16
0.058
0.698
9/23/21 20:47
BRF
cis- 1,3 -Dichloropropene
ND
0.035
0.016
ND
0.16
0.073
0.698
9/23/21 20:47
BRF
trans- 1, 3 -Dichloropropene
ND
0.035
0.011
ND
0.16
0.049
0.698
9/23/21 20:47
BRF
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)
ND
0.035
0.012
ND
0.24
0.084
0.698
9/23/21 20:47
BRF
1,4-Dioxane
ND
0.35
0.024
ND
1.3
0.085
0.698
9/23/21 20:47
BRF
Ethanol
370
20
6.1
690
38
11
10
9/24/21 7:07
BRF
Ethyl Acetate
ND
0.35
0.21
L-03, V-34
ND
1.3
0.75
0.698
9/23/21 20:47
BRF
Ethylbenzene
15
0.035
0.0090
65
0.15
0.039
0.698
9/23/21 20:47
BRF
4-Ethyltoluene
0.13
0.035
0.011
0.62
0.17
0.053
0.698
9/23/21 20:47
BRF
Heptane
0.19
0.035
0.014
0.77
0.14
0.059
0.698
9/23/21 20:47
BRF
Hexachlorobutadiene
ND
0.035
0.019
V-05
ND
0.37
0.21
0.698
9/23/21 20:47
BRF
Hexane
0.32
1.4
0.11
J
1.1
4.9
0.40
0.698
9/23/21 20:47
BRF
2-Hexanone (MBK)
ND
0.070
0.018
ND
0.29
0.072
0.698
9/23/21 20:47
BRF
Isopropanol
13
1.4
0.32
31
3.4
0.79
0.698
9/23/21 20:47
BRF
Methyl tert-Butyl Ether (MTBE)
ND
0.035
0.014
ND
0.13
0.050
0.698
9/23/21 20:47
BRF
Methylene Chloride
0.20
0.35
0.080
J
0.68
1.2
0.28
0.698
9/23/21 20:47
BRF
4-Methyl-2-pentanone (MIBK)
ND
0.035
0.018
ND
0.14
0.073
0.698
9/23/21 20:47
BRF
Naphthalene
0.43
0.035
0.022
2.3
0.18
0.12
0.698
9/23/21 20:47
BRF
Propene
ND
1.4
0.12
ND
2.4
0.20
0.698
9/23/21 20:47
BRF
Styrene
0.28
0.035
0.011
1.2
0.15
0.047
0.698
9/23/21 20:47
BRF
1,1,2,2-Tetrachloroethane
ND
0.035
0.011
ND
0.24
0.073
0.698
9/23/21 20:47
BRF
Page 16 of 40

con -test®
A Pace Analytical Laboratory
Project Location: Charlotte, NC
Date Received: 9/20/2021
Field Sample #: AA-1
Sample ID: 21I1199-06
Sample Matrix: Ambient Air
Sampled: 9/ 16/2021 18:30
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Sample Description/Location:
Sub Description/Location:
Canister ID: 1104
Canister Size: 6 liter
Flow Controller ID: 3349
Sample Type: 8 hr
Work Order: 21I1199
Initial Vacuum(in Hg): -28
Final Vacuum(in Hg): -6
Receipt Vacuum(in Hg): -6.8
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
0.017
0.035
0.010
J 0.12
0.24
0.070
0.698
9/23/21 20:47
BRF
Tetrahydrofuran
1.1
0.35
0.086
3.3
1.0
0.25
0.698
9/23/21 20:47
BRF
Toluene
1.1
0.035
0.015
4.1
0.13
0.055
0.698
9/23/21 20:47
BRF
1,2,4-Trichlorobenzene
ND
0.070
0.024
V-04 ND
0.52
0.18
0.698
9/23/21 20:47
BRF
1, 1, 1 -Trichloroethane
ND
0.035
0.016
ND
0.19
0.088
0.698
9/23/21 20:47
BRF
1,1,2-Trichloroethane
ND
0.035
0.014
ND
0.19
0.076
0.698
9/23/21 20:47
BRF
Trichloroethylene
ND
0.035
0.013
ND
0.19
0.069
0.698
9/23/21 20:47
BRF
Trichlorofluoromethane (Freon 11)
3.5
0.14
0.014
20
0.78
0.078
0.698
9/23/21 20:47
BRF
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
0.086
0.14
0.012
J 0.66
1.1
0.095
0.698
9/23/21 20:47
BRF
1,2,4-Trimethylbenzene
0.78
0.035
0.010
3.8
0.17
0.051
0.698
9/23/21 20:47
BRF
1,3,5-Trimethylbenzene
0.15
0.035
0.0096
0.74
0.17
0.047
0.698
9/23/21 20:47
BRF
Vinyl Acetate
ND
0.70
0.065
ND
2.5
0.23
0.698
9/23/21 20:47
BRF
Vinyl Chloride
ND
0.035
0.014
ND
0.089
0.035
0.698
9/23/21 20:47
BRF
m&p-Xylene
50
0.070
0.019
220
0.30
0.084
0.698
9/23/21 20:47
BRF
o-Xylene
16
0.035
0.0093
69
0.15
0.041
0.698
9/23/21 20:47
BRF
Surrogates
4-Bromofluorobenzene (1)
4-Bromofluorobenzene (1)
% Recovery
% REC Limits
94.3 70-130
96.6 70-130
9/24/21 7:07
9/23/21 20:47
Page 17 of 40

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
21III99-OIRE1 [IA-1]
B290908
1.5
1
N/A
1000
200
30
09/24/21
21I1199-02RE1 [IA-2]
B290908
1.5
1
N/A
1000
200
30
09/24/21
21I1199-03RE1 [IA-3]
B290908
1.5
1
N/A
1000
200
30
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
21I1199-01 [IA-1]
B290913
1.5
1
N/A
1000
200
430
09/23/21
21I1199-02 [IA-2]
B290913
1.5
1
N/A
1000
200
430
09/23/21
21I1199-03 [IA-3]
B290913
1.5
1
N/A
1000
200
430
09/23/21
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
21I1199-04 [IA-4]
B290914
1.5
1
N/A
1000
200
430
09/23/21
21I1199-04RE1 [IA-4]
B290914
1.5
1
N/A
1000
200
30
09/23/21
21I1199-05 [IA-DUP]
B290914
1.5
1
N/A
1000
200
430
09/23/21
21I1199-06 [AA-1]
B290914
1.5
1
N/A
1000
200
430
09/23/21
21I1199-06RE1 [AA-1]
B290914
1.5
1
N/A
1000
200
30
09/23/21
Page 18 of 40

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 B290908 - TO-15 Prep
Blank (B290908-BLK1)
Prepared: 09/23/21 Analyzed: 09/24/21
Ethanol
ND
0.80
Surrogate: 4-Bromofluorobenzene (1)
7.54
8.00 94.2 70-130
LCS (B290908-BSI)
Prepared: 09/23/21 Analyzed: 09/24/21
Ethanol
6.38
5.00 128 70-130
Surrogate: 4-Bromofluorobenzene (1)
7.65
8.00 95.6 70-130
Batch B290913 - TO-15 Prep
Blank (B290913-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
0.0068
0.020
J
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
Ethylbenzene
0.0084
0.020
J
4-Ethyltoluene
ND
0.020
Heptane
ND
0.020
Page 19 of 40

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 B290913 - TO-15 Prep
Blank (B290913-BLKI)
Prepared & Analyzed: 09/23/21
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
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
0.018
0.040 1
o-Xylene
0.0084
0.020 J
Surrogate: 4-Bromofluorobenzene (1) 7.58 8.00 94.7 70-130
Page 20 of 40

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 B290913 - TO-15 Prep
LCS (B290913-BS1)
Prepared & Analyzed: 09/23/21
Acetone
4.79
5.00
95.8
70-130
Benzene
4.62
5.00
92.3
70-130
Benzyl chloride
5.16
5.00
103
70-130
Bromodichloromethane
4.75
5.00
95.0
70-130
Bromoform
5.40
5.00
108
70-130
Bromomethane
5.10
5.00
102
70-130
1,3-Butadiene
4.76
5.00
95.2
70-130
2-Butanone (MEK)
4.74
5.00
94.8
70-130
Carbon Disulfide
5.74
5.00
115
70-130
Carbon Tetrachloride
4.67
5.00
93.4
70-130
Chlorobenzene
4.64
5.00
92.7
70-130
Chloroethane
5.25
5.00
105
70-130
Chloroform
5.00
5.00
100
70-130
Chloromethane
4.75
5.00
95.0
70-130
Cyclohexane
4.43
5.00
88.6
70-130
Dibromochloromethane
4.82
5.00
96.5
70-130
1,2-Dibromoethane (EDB)
4.77
5.00
95.5
70-130
1,2-Dichlorobenzene
5.39
5.00
108
70-130
1,3-Dichlorobenzene
5.34
5.00
107
70-130
1,4-Dichlorobenzene
5.13
5.00
103
70-130
Dichlorodifluoromethane(Freon 12)
5.24
5.00
105
70-130
1,1-Dichloroethane
4.86
5.00
97.1
70-130
1,2-Dichloroethane
4.79
5.00
95.9
70-130
1,1-Dichloroethylene
4.97
5.00
99.3
70-130
cis-1,2-Dichloroethylene
4.90
5.00
97.9
70-130
trans-1,2-Dichloroethylene
4.78
5.00
95.5
70-130
1,2-Dichloropropane
4.55
5.00
91.0
70-130
cis- 1,3 -Dichloropropene
5.01
5.00
100
70-130
trans- 1, 3 -Dichloropropene
4.74
5.00
94.8
70-130
1,2-Dichloro- 1, 1,2,2-tetrafluoroethane
4.65
5.00
93.0
70-130
(Freon 114)
1,4-Dioxane
5.16
5.00
103
70-130
Ethanol
6.28
5.00
126
70-130
Ethyl Acetate
3.49
5.00
69.8
* 70-130 L-03
Ethylbenzene
4.89
5.00
97.9
70-130
4-Ethyltoluene
5.22
5.00
104
70-130
Heptane
3.84
5.00
76.7
70-130
Hexachlorobutadiene
5.39
5.00
108
70-130
Hexane
4.86
5.00
97.3
70-130
2-Hexanone (MBK)
5.07
5.00
101
70-130
Isopropanol
4.01
5.00
80.2
70-130
Methyl tert-Butyl Ether (MTBE)
4.70
5.00
93.9
70-130
Methylene Chloride
4.86
5.00
97.2
70-130
4-Methyl-2-pentanone (MIBK)
4.92
5.00
98.5
70-130
Naphthalene
5.64
5.00
113
70-130
Propene
5.04
5.00
101
70-130
Styrene
5.07
5.00
101
70-130
Page 21 of 40

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 B290913 - TO-15 Prep
LCS (B290913-BS1)
Prepared & Analyzed: 09/23/21
1,1,2,2-Tetrachloroethane
5.05
5.00
101
70-130
Tetrachloroethylene
4.99
5.00
99.7
70-130
Tetrahydrofuran
4.50
5.00
90.0
70-130
Toluene
4.61
5.00
92.1
70-130
1,2,4-Trichlorobenzene
5.67
5.00
113
70-130
1, 1, 1 -Trichloroethane
4.76
5.00
95.2
70-130
1,1,2-Trichloroethane
4.52
5.00
90.5
70-130
Trichloroethylene
5.10
5.00
102
70-130
Trichlorofluoromethane (Freon 11)
5.19
5.00
104
70-130
1, 1,2-Trichloro- 1,2,2-trifluoroethane (Freon
5.97
5.00
119
70-130
113)
1,2,4-Trimethylbenzene
5.07
5.00
101
70-130
1,3,5-Trimethylbenzene
4.86
5.00
97.2
70-130
Vinyl Acetate
6.59
5.00
132
* 70-130 L-01, V-3E
Vinyl Chloride
5.37
5.00
107
70-130
m&p-Xylene
9.61
10.0
96.1
70-130
o-Xylene
5.06
5.00
101
70-130
Surrogate: 4-BromoJluorobenzene (1) 8.19 8.00 102 70-130
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
Page 22 of 40

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
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
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
Tichloroethylene
ND
0.020
Trichlorofluoromethane (Freon 11)
ND
0.080
1,1,2-Tichloro-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-BromoJluorobenzene (I) 7.58 8.00 94.7 70-130
Page 23 of 40

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
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
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
111
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-05
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
Page 24 of 40

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
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-3E
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 25 of 40

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-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.
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-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 26 of 40

con -test®
A Pace Analytical Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
TPH Thomas P. Hnitecki
RLF Rebecca Faust
STATION PDF Management Station
KKM Kerry K. McGee
BRF Brittany R. Fisk
ANALYST
Page 27 of 40

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
Initial Cal Check (S062606-ICV1) Lab File ID: J21A232023.D Analyzed: 08/21/21 02:04
Bromochloromethane (1)
152325
2.866
150879
2.863
101
60 - 140
0.0030
+/-0.50
1,4-Difluorobenzene(1)
700372
3.471
694423
3.468
101
60-140
0.0030
+/-0.50
Chlorobenzene-d5(1)
652377
5.056
641566
5.057
102
60-140
-0.0010
+/-0.50
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
Initial Cal Check (S063338-ICV1) Lab File ID: K21A259025.13 Analyzed: 09/16/21 23:09
Bromochloromethane (1)
65004
2.989
65617
2.992
99
60 - 140
-0.0030
+/-0.50
1,4-Difluorobenzene(1)
208463
3.592
200888
3.595
104
60-140
-0.0030
+/-0.50
Chlorobenzene-d5(1)
167501
5.185
162778
5.188
103
60-140
-0.0030
+/-0.50
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
Calibration Check (S063573-CCV1) Lab File ID: J2IA267004.D Analyzed: 09/24/21 09:40
Bromochloromethane (1)
160833
2.863
150879
2.863
107
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
797554
3.468
694423
3.468
115
60-140
0.0000
+/-0.50
Chlorobenzene-d5(1)
744007
5.053
641566
5.057
116
60-140
-0.0040
+/-0.50
LCS (B290908-BS1 ) Lab File ID: J21A267005.D Analyzed: 09/24/21 10:06
Bromochloromethane (1)
162105
2.86
160833
2.863
101
60 - 140
-0.0030
+/-0.50
1,4-Difluorobenzene(1)
794587
3.468
797554
3.468
100
60-140
0.0000
+/-0.50
Chlorobenzene-d5(1)
743683
5.053
744007
5.053
100
60-140
0.0000
+/-0.50
Blank (B290908-BLK1) Lab File ID: J21A267008.D Analyzed: 09/24/21 11:37
Bromochloromethane (1)
161497
2.85
160833
2.863
100
60 - 140
-0.0130
+/-0.50
1,4-Difluorobenzene(1)
776970
3.459
797554
3.468
97
60-140
-0.0090
+/-0.50
Chlorobenzene-d5(1)
712481
5.05
744007
5.053
96
60-140
-0.0030
+/-0.50
IA-1 (2111199-01RE1) Lab File ID: J2IA267035.D Analyzed: 09/25/21 01:28
Bromochloromethane (1)
150140
2.85
160833
2.863
93
60 - 140
-0.0130
+/-0.50
1,4-Difluorobenzene(1)
747510
3.458
797554
3.468
94
60-140
-0.0100
+/-0.50
Chlorobenzene-d5(1)
676403
5.05
744007
5.053
91
60-140
-0.0030
+/-0.50
IA-2 (2111199-02RE1) Lab File ID: J2IA267036.13 Analyzed: 09/25/21 01:53
Bromochloromethane (1)
147939
2.85
160833
2.863
92
60 - 140
-0.0130
+/-0.50
1,4-Difluorobenzene(1)
728506
3.459
797554
3.468
91
60-140
-0.0090
+/-0.50
Chlorobenzene-d5(1)
666377
5.051
744007
5.053
90
60-140
-0.0020
+/-0.50
Page 28 of 40

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
IA-3 (2111199-03RE1) Lab File ID: J21A267037.D Analyzed: 09/25/21 02:18
Bromochloromethane (1)
150913
2.85
160833
2.863
94
60 - 140
-0.0130
+/-0.50
1,4-Difluorobenzene(1)
739425
3.462
797554
3.468
93
60-140
-0.0060
+/-0.50
Chlorobenzene-d5(1)
683089
5.051
744007
5.053
92
60-140
-0.0020
+/-0.50
INTERNAL STANDARD AREAAND RT SUMMARY
EPA TO-15
Internal Standard
Response
RT
Reference
Response
Reference
RT
Area %
Area %
Limits
RT Diff
RT Diff
Limit
Q
Calibration Check (S063579-CCV1) Lab File ID: K21A266004.13 Analyzed: 09/23/21 09:38
Bromochloromethane (1)
56022
2.992
65617
2.992
85
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
171584
3.595
200888
3.595
85
60-140
0.0000
+/-0.50
Chlorobenzene-d5(1)
145496
5.188
162778
5.188
89
60-140
0.0000
+/-0.50
LCS (B290913-BS1 ) Lab File ID: K21A266005.13 Analyzed: 09/23/21 10:10
Bromochloromethane (1)
56833
2.992
56022
2.992
101
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
180913
3.598
171584
3.595
105
60-140
0.0030
+/-0.50
Chlorobenzene-d5(1)
144330
5.188
145496
5.188
99
60-140
0.0000
+/-0.50
Blank (B290913-BLK1) Lab File ID: K21A266008.13 Analyzed: 09/23/21 12:01
Bromochloromethane (1)
62952
2.992
56022
2.992
112
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
180763
3.598
171584
3.595
105
60-140
0.0030
+/-0.50
Chlorobenzene-d5(1)
155964
5.188
145496
5.188
107
60-140
0.0000
+/-0.50
IA-1 (2111199-01) Lab File ID: K21A266035.13 Analyzed: 09/24/21 05:36
Bromochloromethane (1)
67373
2.992
56022
2.992
120
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
225007
3.598
171584
3.595
131
60-140
0.0030
+/-0.50
Chlorobenzene-d5(1)
188343
5.188
145496
5.188
129
60-140
0.0000
+/-0.50
IA-2 (2111199-02 ) Lab File ID: K21A266036.13 Analyzed: 09/24/21 06:12
Bromochloromethane (1)
65936
2.992
56022
2.992
118
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
223152
3.598
171584
3.595
130
60-140
0.0030
+/-0.50
Chlorobenzene-d5(1)
187810
5.188
145496
5.188
129
60-140
0.0000
+/-0.50
IA-3 (2111199-03) Lab File ID: K21A266037.1) Analyzed: 09/24/21 06:50
Bromochloromethane (1)
67526
2.992
56022
2.992
121
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
236949
3.595
171584
3.595
138
60-140
0.0000
+/-0.50
Chlorobenzene-d5(1)
184939
5.188
145496
5.188
127
60-140
0.0000
+/-0.50
INTERNAL STANDARD AREA AND RT SUMMARY
EPA TO-15
Reference
Reference
Area %
RT Diff
Internal Standard
Response
RT
Response
RT
Area %
Limits 11
RT Diff
Limit
Q
Page 29 of 40

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
Calibration Check (S063580-CCV1) Lab File ID: J21A266006.D Analyzed: 09/23/21 12:22
Bromochloromethane (1)
170036
2.86
150879
2.863
113
60 - 140
-0.0030
+/-0.50
1,4-Difluorobenzene(1)
840594
3.468
694423
3.468
121
60-140
0.0000
+/-0.50
Chlorobenzene-d5(1)
777364
5.054
641566
5.057
121
60-140
-0.0030
+/-0.50
LCS (B290914-BS1 ) Lab File ID: J21A266007.D Analyzed: 09/23/21 12:48
Bromochloromethane (1)
174614
2.86
170036
2.86
103
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
855895
3.468
840594
3.468
102
60-140
0.0000
+/-0.50
Chlorobenzene-d5(1)
797196
5.054
777364
5.054
103
60-140
0.0000
+/-0.50
Blank (B290914-BLK1) Lab File ID: J21A266010.D Analyzed: 09/23/21 14:16
Bromochloromethane (1)
172704
2.85
170036
2.86
102
60 - 140
-0.0100
+/-0.50
1,4-Difluorobenzene(1)
828463
3.459
840594
3.468
99
60-140
-0.0090
+/-0.50
Chlorobenzene-d5(1)
751077
5.05
777364
5.054
97
60-140
-0.0040
+/-0.50
IA-4 (2111199-04 ) Lab File ID: J21A266019.D Analyzed: 09/23/21 19:42
Bromochloromethane (1)
168505
2.85
170036
2.86
99
60 - 140
-0.0100
+/-0.50
1,4-Difluorobenzene(1)
825994
3.462
840594
3.468
98
60-140
-0.0060
+/-0.50
Chlorobenzene-d5(1)
760970
5.05
777364
5.054
98
60-140
-0.0040
+/-0.50
IA-DUP (2111199-05) Lab File ID: J2IA266020.D Analyzed: 09/23/21 20:14
Bromochloromethane (1)
172371
2.85
170036
2.86
101
60 - 140
-0.0100
+/-0.50
1,4-Difluorobenzene(1)
829463
3.462
840594
3.468
99
60-140
-0.0060
+/-0.50
Chlorobenzene-d5(1)
765403
5.053
777364
5.054
98
60-140
-0.0010
+/-0.50
AA-1 (21I1199-06 ) Lab File ID: J2IA266021.D Analyzed: 09/23/21 20:47
Bromochloromethane (1)
172020
2.85
170036
2.86
101
60 - 140
-0.0100
+/-0.50
1,4-Difluorobenzene(1)
832110
3.459
840594
3.468
99
60-140
-0.0090
+/-0.50
Chlorobenzene-d5(1)
762420
5.054
777364
5.054
98
60-140
0.0000
+/-0.50
IA-4 (2111199-04RE1) Lab File ID: J2IA266029.1) Analyzed: 09/24/21 06:42
Bromochloromethane (1)
158486
2.85
170036
2.86
93
60 - 140
-0.0100
+/-0.50
1,4-Difluorobenzene(1)
778316
3.462
840594
3.468
93
60-140
-0.0060
+/-0.50
Chlorobenzene-d5(1)
729916
5.05
777364
5.054
94
60-140
-0.0040
+/-0.50
AA-1 (21I1199-06RE1) Lab File ID: J21A266030.13 Analyzed: 09/24/21 07:07
Bromochloromethane (1)
167906
2.85
170036
2.86
99
60 - 140
-0.0100
+/-0.50
1,4-Difluorobenzene(1)
798557
3.462
840594
3.468
95
60-140
-0.0060
+/-0.50
Chlorobenzene-d5(1)
729258
5.05
777364
5.054
94
60-140
-0.0040
+/-0.50
Page 30 of 40

con -test®
A Pace Analytical Laboratory
39 Spruce Street' East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
CONTINUING CALIBRATION CHECK
EPA TO-15
S063573-CCV 1
COMPOUND
TYPE
CONC. (ppbv)
RESPONSE FACTOR
% DIFF / DRIFT
STD CCV
ICAL
CCV
MIN (#)
CCV
LIMIT (#)
Ethanol
A
5.00 6.00
0.1363511
0.1635386
19.9
30
# Column to be used to flag Response Factor and %Diff/Drift values with an asterisk
* Values outside of QC limits
Page 31 of 40

con -test®
A Pace Analytical Laboratory
39 Spruce Street' East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
CONTINUING CALIBRATION CHECK
EPA TO-15
S063579-CCV 1
COMPOUND
TYPE.
CONC. (ppbv)
RESPONSE FACTOR
% DIFF / DRIFT
STD
CCV
ICAL
CCV
MIN (#)
CCV
LIMIT (#)
Acetone
A
5.00
5.18
1.044997
1.08246
3.6
30
Benzene
A
5.00
5.12
0.6772546
0.6939295
2.5
30
Benzyl chloride
A
5.00
5.62
0.4517045
0.5074724
12.3
30
Bromodichloromethane
A
5.00
5.36
0.4576082
0.4909549
7.3
30
Bromoform
A
5.00
5.86
0.4225807
0.4956287
17.3
30
Bromomethane
A
5.00
5.60
0.7358094
0.8248188
12.1
30
1,3-Butadiene
A
5.00
5.25
0.6122438
0.643233
5.1
30
2-Butanone(MEK)
A
5.00
4.75
1.117205
1.061469
-5.0
30
Carbon Disulfide
A
5.00
6.02
1.700674
2.049052
20.5
30
Carbon Tetrachloride
A
5.00
5.20
0.4399405
0.4575998
4.0
30
Chlorobenzene
A
5.00
5.02
0.6710772
0.673844
0.4
30
Chloroethane
A
5.00
5.44
0.4322339
0.4702724
8.8
30
Chloroform
A
5.00
5.35
1.383001
1.480675
7.1
30
Chloromethane
A
5.00
5.34
0.6957364
0.7428225
6.8
30
Cyclohexane
A
5.00
4.97
0.2863864
0.2848284
-0.5
30
Dibromochloromethane
A
5.00
5.24
0.5392756
0.565041
4.8
30
1,2-Dibromoethane (EDB)
A
5.00
5.08
0.4882235
0.4959477
1.6
30
1,2-Dichlorobenzene
A
5.00
5.63
0.5583295
0.6290537
12.7
30
1,3-Dichlorobenzene
A
5.00
5.42
0.3904983
0.4236872
8.5
30
1,4-Dichlorobenzene
A
5.00
5.28
0.6060934
0.6397647
5.6
30
Dichlorodifluoromethane (Freon 12)
A
5.00
5.73
2.131798
2.441955
14.5
30
1,1-Dichloroethane
A
5.00
5.32
1.070749
1.138524
6.3
30
1,2-Dichloroethane
A
5.00
5.05
0.850621
0.8595195
1.0
30
1,1-Dichloroethylene
A
5.00
5.28
1.199799
1.268187
5.7
30
cis-1,2-Dichloroethylene
A
5.00
5.07
0.8960317
0.9092999
1.5
30
trans-1,2-Dichloroethylene
A
5.00
5.33
0.9105593
0.9705616
6.6
30
1,2-Dichloropropane
A
5.00
4.98
0.2471363
0.245981
-0.5
30
cis-1,3-Dichloropropene
A
5.00
4.68
0.282988
0.2650783
-6.3
30
trans- l,3-Dichloropropene
A
5.00
5.01
0.3201369
0.3209344
0.2
30
1,2-Dichloro- 1, 1,2,2-tetrafluoroethane (Freon 1
A
5.00
5.44
2.193098
2.385434
8.8
30
1,4-Dioxane
A
5.00
5.70
0.1252425
0.14268
13.9
30
Ethanol
A
5.00
5.64
0.1614241
0.182157
12.8
30
Ethyl Acetate
A
5.00
4.96
0.2630812
0.2608118
-0.9
30
Ethylbenzene
A
5.00
5.21
1.130441
1.177489
4.2
30
4-Ethyltoluene
A
5.00
5.54
1.136131
1.258239
10.7
30
Heptane
A
5.00
4.64
0.1870834
0.1737132
-7.1
30
Hexachlorobutadiene
A
5.00
5.52
0.353338
0.3902348
10A
30
Hexane
L
5.00
5.39
0.5879851
0.6421763
7.9
30
Page 32 of 40

con -test®
A Pace Analytical Laboratory
39 Spruce Street' East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
CONTINUING CALIBRATION CHECK
EPA TO-15
S063579-CCV 1
COMPOUND
TYPE
CONC. (ppbv)
RESPONSE FACTOR
% DIFF / DRIFT
STD
CCV
ICAL
CCV
MIN (#)
CCV
LIMIT (#)
2-Hexanone (MBK)
A
5.00
5.23
0.4582989
0.4791664
4.6
30
Isopropanol
A
5.00
5.38
1.230091
1.322995
7.6
30
Methyl tert-Butyl Ether (MTBE)
A
5.00
5.11
1.735778
1.775074
2.3
30
Methylene Chloride
A
5.00
5.32
0.7520661
0.8004855
6.4
30
4-Methyl-2-pentanone (MI13K)
A
5.00
5.24
0.1956749
0.2052779
4.9
30
Naphthalene
A
5.00
5.40
0.9756151
1.052873
7.9
30
Propene
A
5.00
5.68
0.5977407
0.6789047
13.6
30
Styrene
A
5.00
5.53
0.6328158
0.6998515
10.6
30
1,1,2,2-Tetrachloroethane
A
5.00
5.34
0.6582366
0.7023368
6.7
30
Tetrachloroethylene
A
5.00
5.41
0.3934633
0.4257657
8.2
30
Tetrahydroforan
A
5.00
4.92
0.6580954
0.6470601
-1.7
30
Toluene
A
5.00
5.04
0.959144
0.9665145
0.8
30
1,2,4-Trichlorobenzene
A
5.00
5.65
0.375898
0.4248529
13.0
30
1, 1, 1 -Trichloroethane
A
5.00
5.56
0.471714
0.5248042
11.3
30
1,1,2-Trichloroethane
A
5.00
4.67
0.3462991
0.3232749
-6.6
30
Trichloroethylene
A
5.00
5.70
0.2556787
0.2913931
14.0
30
Trichlorofluoromethane(Freon 11)
A
5.00
5.62
1.972353
2.215016
12.3
30
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 11
A
5.00
5.74
1.00369
1.151776
14.8
30
1,2,4-Trimethylbenzene
A
5.00
5.41
0.9612681
1.039688
8.2
30
1,3,5-Trimethylbenzene
A
5.00
5.41
0.7473243
0.8087645
8.2
30
Vinyl Acetate
A
5.00
4.69
0.8051633
0.7551034
-6.2
30
Vinyl Chloride
A
5.00
5.55
0.7945618
0.8816536
11.0
30
m&p-Xylene
A
10.0
10.3
0.9266552
0.9567108
3.2
30
o-Xylene
A
5.00
5.38
0.8546217
0.9186782
7.5
30
# Column to be used to flag Response Factor and %Diff/Drift values with an asterisk
* Values outside of QC limits
Page 33 of 40

con -test®
A Pace Analytical Laboratory
39 Spruce Street' East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
CONTINUING CALIBRATION CHECK
EPA TO-15
S063580-CCV 1
COMPOUND
TYPE.
CONC. (ppbv)
RESPONSE FACTOR
% DIFF / DRIFT
STD
CCV
ICAL
CCV
MIN (#)
CCV
LIMIT (#)
Acetone
A
5.00
4.50
1.013483
0.9118822
-10.0
30
Benzene
A
5.00
5.68
0.5773346
0.6564101
13.7
30
Benzyl chloride
A
5.00
6.00
0.5662092
0.6798298
20.1
30
Bromodichloromethane
A
5.00
4.79
0.4493554
0.4307183
-4.1
30
Bromoform
A
5.00
4.88
0.6972692
0.6812479
-2.3
30
Bromomethane
A
5.00
6.07
0.795872
0.966026
21.4
30
1,3-Butadiene
A
5.00
6.00
0.4907101
0.5884495
19.9
30
2-Butanone (MEK)
A
5.00
4.36
1.40087
1.220447
-12.9
30
Carbon Disulfide
A
5.00
6.12
1.998984
2.44639
22.4
30
Carbon Tetrachloride
A
5.00
4.28
0.5188025
0.443888
-14.4
30
Chlorobenzene
A
5.00
4.94
0.7193
0.7106169
-1.2
30
Chloroethane
A
5.00
6.21
0.3795632
0.4713731
24.2
30
Chloroform
A
5.00
5.17
1.888134
1.953375
3.5
30
Chloromethane
A
5.00
5.41
0.5417118
0.5859936
8.2
30
Cyclohexane
A
5.00
5.00
0.265344
0.2652372
-0.04
30
Dibromochloromethane
A
5.00
4.93
0.6098379
0.6016826
-1.3
30
1,2-Dibromoethane(EDB)
A
5.00
5.10
0.4553549
0.4640503
1.9
30
1,2-Dichlorobenzene
A
5.00
4.75
0.757862
0.7204141
-4.9
30
1,3-Dichlorobenzene
A
5.00
5.15
0.7367625
0.7588846
3.0
30
1,4-Dichlorobenzene
A
5.00
5.03
0.7493582
0.7542063
0.6
30
Dichlorodifluoromethane (Freon 12)
A
5.00
5.17
2.185662
2.259832
3.4
30
1,1-Dichloroethane
A
5.00
5.04
1.41636
1.427971
0.8
30
1,2-Dichloroethane
A
5.00
4.33
1.131436
0.9799619
-13.4
30
1,1-Dichloroethylene
A
5.00
5.18
1.038306
1.076619
3.7
30
cis-1,2-Dichloroethylene
A
5.00
5.05
1.058854
1.070032
1.1
30
trans-1,2-Dichloroethylene
A
5.00
4.95
1.144971
1.132795
-1.1
30
1,2-Dichloropropane
A
5.00
4.88
0.2035658
0.1988023
-2.3
30
cis-1,3-Dichloropropene
A
5.00
5.17
0.3153762
0.3261065
3.4
30
trans- l,3-Dichloropropene
A
5.00
5.01
0.2855395
0.2863423
0.3
30
1,2-Dichloro- 1, 1,2,2-tetrafluoroethane (Freon 1
A
5.00
5.96
2.0897
2.490277
19.2
30
1,4-Dioxane
A
5.00
5.34
0.1348394
0.1439477
6.8
30
Ethanol
A
5.00
6.04
0.1363511
0.1647275
20.8
30
Ethyl Acetate
A
5.00
4.71
0.2996362
0.2820579
-5.9
30
Ethylbenzene
A
5.00
5.16
1.068394
1.102999
3.2
30
4-Ethyltoluene
A
5.00
5.23
1.191921
1.246821
4.6
30
Heptane
A
5.00
4.96
0.1598388
0.1585812
-0.8
30
Hexachlorobutadiene
A
5.00
3.47
1.05506
0.7331052
-30.5
30
Hexane
L
5.00
4.42
0.7820405
0.6355078
-11.7
30
Page 34 of 40

con -test®
A Pace Analytical Laboratory
39 Spruce Street' East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
CONTINUING CALIBRATION CHECK
EPA TO-15
S063580-CCV 1
COMPOUND
TYPE
CONC. (ppbv)
RESPONSE FACTOR
% DIFF / DRIFT
STD
CCV
ICAL
CCV
MIN (#)
CCV
LIMIT (#)
2-Hexanone (MBK)
A
5.00
5.34
0.3105363
0.3317262
6.8
30
Isopropanol
A
5.00
4.68
1.087458
1.018278
-6.4
30
Methyl tert-Butyl Ether (MTBE)
A
5.00
4.92
2.400388
2.361467
-1.6
30
Methylene Chloride
A
5.00
4.88
0.6720844
0.6559458
-2.4
30
4-Methyl-2-pentanone (MI13K)
A
5.00
6.02
0.141787
0.1705917
20.3
30
Naphthalene
A
5.00
4.73
1.049522
0.9925214
-5.4
30
Propene
A
5.00
5.33
0.4575591
0.4877649
6.6
30
Styrene
A
5.00
5.31
0.6387272
0.6784693
6.2
30
1,1,2,2-Tetrachloroethane
A
5.00
5.31
0.5691929
0.6047
6.2
30
Tetrachloroethylene
A
5.00
4.59
0.5934671
0.5451325
-8.1
30
Tetrahydroforan
A
5.00
4.49
0.811293
0.7278459
-10.3
30
Toluene
A
5.00
5.04
0.8381161
0.8456394
0.9
30
1,2,4-Trichlorobenzene
A
5.00
4.52
0.5285083
0.4775544
-9.6
30
1, 1, 1 -Trichloroethane
A
5.00
4.41
0.4533588
0.3999648
-11.8
30
1,1,2-Trichloroethane
A
5.00
4.91
0.2953724
0.2898822
-1.9
30
Trichloroethylene
A
5.00
4.76
0.2950588
0.2806853
4.9
30
Trichlorofluoromethane(Freon 11)
A
5.00
5.16
2.216429
2.285276
3.1
30
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 11
A
5.00
5.86
1.637043
1.9179
17.2
30
1,2,4-Trimethylbenzene
A
5.00
4.78
1.051818
1.005225
-4.4
30
1,3,5-Trimethylbenzene
A
5.00
4.84
1.056033
1.022831
-3.1
30
Vinyl Acetate
A
5.00
4.20
1.072956
0.9015879
-16.0
30
Vinyl Chloride
A
5.00
6.23
0.6636142
0.8264885
24.5
30
m&p-Xylene
A
10.0
10.1
0.8662275
0.8721793
0.7
30
o-Xylene
A
5.00
4.92
0.8477905
0.8333579
-1.7
30
# Column to be used to flag Response Factor and %Diff/Drift values with an asterisk
* Values outside of QC limits
Page 35 of 40

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 36 of 40

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-trifluoroethane (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 37 of 40

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Page 38 of 40

9122121, 6:48 PM Detailed Tracking
TRACK ANOTHER SHIPMENT
987548455539
ADD NICKNAME
Delivered
Wednesday, September 22, 2021 at 12:05 pm
THIS IS 1 OF S PIECES
DELIVERED
Signed for by: AALINE
GET STATUS UPDATES
OBTAIN PROOF OF DELIVERY
FROM TO
Huntersville, NC US East Longmeadow, MA US
5 Piece Shipment
TRACKING ID
STATUS
SHIP
DELIVERY
HANDLING PIECE
SHIPPER CITY,
DATE
DATE
UNITS
STATE
967548455539 (master)
Delivered
9/20/21
9/22/21
C
Hun€ersville NC
98754845554E
Delivered
9/20/21
9/22/21
0
Huntersville NC
98754845555D
Delivered
9/20/21
9/22/21
0
Huntersville NC
9875,184555�)1
Delivered
9/20/21
9/22/21
0
Huntersville NC
987548455572
Delivered
9120/21
9/22/21
0
Huntersville NC
Travel History
TIME ZONE
Local Scan Time
hUps://www.fedex .com/fed extrack/?trkn br=987548455539&trkq ua l=12022-987548455539—F D EG
it 0
RECIPIENT CITY,
STATE
EAST LONGMEADOW MA
EAST LONGMEADOW MA
EAST LONGMEADOW MA
EAST LONGMEADOW MA
EAST LONGMEADOW MA
O
Page 39 of 40

I Have Not Confirmed Sample Container
Numbers With Lab Staff Before
Relinquishing Over
Samples
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
Received By Date E Time is --
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?
Was COC Relinquished ?
Are there any loose caps/valves on any samples?
Is COC in ink/ Legible?�Is
N7
.. .
Were Samples Tampered with?
Does Chain Agree With Samples?
Did COC Include all Client( Analysis 7 Sampler Name -A.
Pertinent Information? Project ID's Collection Dates/Times
Are Sample Labels filled out and legible?
Are there Rushes? _ �-
Samples are received within holding time?
Proper Media Used? 7
Are there Trip Blanks? -I-_
Who was notified?
Individually Certified Cans? \_LL_
is there enough Volume?
f Page 40 of 40

APPENDIX D

Table 1
Summary of Subslab Vapor Analytical Data
Seneca Place Shopping Center
Charlotte, North Carolina
H&H Job No. AZA-001
Screening Criteria
Former Malone's
Pourhouse
Former PersonalFormer
Touch Dry-
Cleaning
Baby
USA
Hook & Tire
Sample ID
VMP-1
VMP-2
VMP-3
VMP-4
VMP-5
DWM Non -Residential SGSL1
DWM Residential SGSLZ
Sample Date
5/5/2015
5/5/2015
5/5/2015
5/5/2015
5/5/2015
Units
u /m3
u /m3
u /m3
u /m3
u /m3
u /m3
u /m3
VOCs (TO-15)
Acetone
2,720,000
21,600
150 B
76 B
86 B
200 B
330 B
Benzene
1,570
120
1.8
1.2
1.7
2.0
2.1
2-Butanone (MEK)
438,000
34,800
21 J
181
14 J
181
191
Carbon Disulfide
61,300
4,870
12
15
11
10
8.7
Chloroform
533
40.7
0.94 J
<0.98
0.23 J
<0.98
<0.98
Chloromethane
7,880
626
0.74 J
<0.83
0.40 J
<0.83
0.45 J
Cyclohexane
526,000
41,700
<0.69
2.1
<0.69
4.2
2.9
1,4-Dichlorobenzene
1,110
85.1
1.2 J
0.89 J
1.9
1.1 J
0.82 J
Dichlorodifluoromethane (Freon 12)
8,760
695
440 B
2.9 B
2.5 B
7.7 B
4.4 B
1,2-Dichloroethane
472
36.0
<0.81
1.8
<0.81
2.0
1.8
Ethanol
NS
NS
120
19
24
74
180
Ethyl Acetate
6,130
487
7.9
<0.72
2.8
<0.72
<0.72
Ethylbenzene
4,910
374
3.2
4.9
2.0
6.2
11
4-Ethyltoluene
NS
NS
0.92 J
2.5
1.8
12
50
Heptane
NS
NS
1.2
4.6
1.1
23
140
Hexane
61,300
4,870
8.5 B, J
680 B
21 B, J
1,900 B
1,500 B
2-Hexanone (MBK)
2,630
209
4.3
<0.82
3.1
<0.82
<0.82
Isopropanol
NS
NS
26
13 J
8.6 J
16 J
16 J
Methylene Chloride
52,600
4,170
1.3 B, J
0.97 B, J
1.2 B, J
1.4 B, J
1.1 B, J
4-Methyl-2-pentanone (MIBK)
263,000
20,900
2.5
<0.82
3.0
19
4.8
Naphthalene
263
20.9
0.96 J
2.1
9.8
2.3
35
Propene
263,000
20,900
5.1 J
<14
<14
<14
<14
Styrene
87,600
6,950
5.9
2.0
4.7
1.9
2.0
Tetrachloroethylene
3,500
278
13
6,600
57
31
1,300
Tetrahydrofuran
175,000
13,900
3.6
3.9
1.4
1.9
1.5
Toluene
438,000
34,800
19
20
11
24
24
1, 1, 1 -Trichloroethane
438,000
34,800
<1.1
<1.1
0.83 J
<1.1
<1.1
Trichloroethylene
175
13.9
<1.1
0.32 J
<1.1
<1.1
<1.1
Trichlorofluoromethane (Freon 11)
61,300
4,870
32
120
120
3.0 J
3.4 J
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
2,630,000
209,000
5.4 J
4.8 J
5.5 J
5.6 J
5.7 J
1,2,4-Trimethylbenzene
613
34.8
4.9
12
17
25
260
1,3,5-Trimethylbenzene
NS
NS
1.0
4.9
4.2
12
76
Xylene, Total
8,760
695
9.8
43
10.3
38
103
Notes:
1) NC Department of Environment and Natural Resources (DENR) Divison of Waste Management Non -Residential Subslab Soil Gas Screening Levels (June 2014)
2) NC Department of Environment and Natural Resources (DENR) Divison of Waste Management Residential Subslab Soil Gas Screening Levels (June 2014)
Only those compounds detected in at least one sample shown above
Bold indicates an exceedance of the Non -Residential Subslab Soil Gas Screening Level (SGSL)
B = Analyte is found in the associated blank as well as in the sample
J = Detected but below the reporting limit (lowest calibration standard); therefore, result is an estimated concentration
VOCs = volatile organic compounds
NS = screening criteria not specified; µg/m3 = micro grams per cubic meter
Table 1
S:WAA-Master Projects\Azalea Management (AZA)\AZA.001 Seneca Place BRIndoor Air Report\Data Table Hart & Hickman, PC

APPENDIX E

Risk for Individual Pathways
r
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID: Seneca Place Suite H
Exposure Unit ID: IA-1
DIRECT CONTACT SOIL AND WATER CALCULATORS
Receptor
Pathway
CarcinogenicRiskHazard
Index
Risk exceeded?
Resident
Soil
NC
NC
NC
Groundwater Use*
NC
NC
NC
Non -Residential Worker
Soil
NC
NC
NC
Groundwater Use*
NC
NC
NC
Construction Worker
Soil
NC
NC
NC
Recreator/Trespasser
Soil
NC
NC
NC
Surface Water*
NC
NC
NC
VAPOR INTRUSION CALCULATORS
Receptor
Pathway
CarcinogenicRiskHazard
Index
Risk exceeded?
Resident
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
NC
NC
NC
Indoor Air
9.7E-05
4.2E+00
YES
Non -Residential Worker
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
NC
NC
NC
Indoor Air
2.2E-05
1.0E+00
NO
CONTAMINANT MIGRATION CALCULATORS
Pathway
Source
Target Receptor Concentrations Exceeded?
Groundwater
Source Soil
Exceedence of 2L at Receptor?
NC
Source Groundwater
Exceedence of 2L at Receptor?
NC
Surface Water
Source Soil
Exceedence of 2B at Receptor?
NC
Source Groundwater
Exceedence of 2B at Receptor?
NC
Notes:
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk -based
closure.
3. NM = Not Modeled
4. NC = Pathway not calculated
North Carolina DEQ Risk Calculator

Risk for Individual Pathways
r
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID: Seneca Place Suite H
Exposure Unit ID: IA-2
DIRECT CONTACT SOIL AND WATER CALCULATORS
Receptor
Pathway
CarcinogenicRiskHazard
Index
Risk exceeded?
Resident
Soil
NC
NC
NC
Groundwater Use*
NC
NC
NC
Non -Residential Worker
Soil
NC
NC
NC
Groundwater Use*
NC
NC
NC
Construction Worker
Soil
NC
NC
NC
Recreator/Trespasser
Soil
NC
NC
NC
Surface Water*
NC
NC
NC
VAPOR INTRUSION CALCULATORS
Receptor
Pathway
CarcinogenicRiskHazard
Index
Risk exceeded?
Resident
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
NC
NC
NC
Indoor Air
8.7E-05
3.6E+00
YES
Non -Residential Worker
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
NC
NC
NC
Indoor Air
2.0E-05
8.5E-01
NO
CONTAMINANT MIGRATION CALCULATORS
Pathway
Source
Target Receptor Concentrations Exceeded?
Groundwater
Source Soil
Exceedence of 2L at Receptor?
NC
Source Groundwater
Exceedence of 2L at Receptor?
NC
Surface Water
Source Soil
Exceedence of 2B at Receptor?
NC
Source Groundwater
Exceedence of 2B at Receptor?
NC
Notes:
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk -based
closure.
3. NM = Not Modeled
4. NC = Pathway not calculated
North Carolina DEQ Risk Calculator

Risk for Individual Pathways
r
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID: Seneca Place Suite H
Exposure Unit ID: IA-3
DIRECT CONTACT SOIL AND WATER CALCULATORS
Receptor
Pathway
CarcinogenicRiskHazard
Index
Risk exceeded?
Resident
Soil
NC
NC
NC
Groundwater Use*
NC
NC
NC
Non -Residential Worker
Soil
NC
NC
NC
Groundwater Use*
NC
NC
NC
Construction Worker
Soil
NC
NC
NC
Recreator/Trespasser
Soil
NC
NC
NC
Surface Water*
NC
NC
NC
VAPOR INTRUSION CALCULATORS
Receptor
Pathway
CarcinogenicRiskHazard
Index
Risk exceeded?
Resident
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
NC
NC
NC
Indoor Air
8.1E-05
3.5E+00
YES
Non -Residential Worker
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
NC
NC
NC
Indoor Air
1.9E-05
8.2E-01
NO
CONTAMINANT MIGRATION CALCULATORS
Pathway
Source
Target Receptor Concentrations Exceeded?
Groundwater
Source Soil
Exceedence of 2L at Receptor?
NC
Source Groundwater
Exceedence of 2L at Receptor?
NC
Surface Water
Source Soil
Exceedence of 2B at Receptor?
NC
Source Groundwater
Exceedence of 2B at Receptor?
NC
Notes:
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk -based
closure.
3. NM = Not Modeled
4. NC = Pathway not calculated
North Carolina DEQ Risk Calculator

Risk for Individual Pathways
r
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID: Seneca Place Suite H
Exposure Unit ID: IA-4
DIRECT CONTACT SOIL AND WATER CALCULATORS
Receptor
Pathway
CarcinogenicRiskHazard
Index
Risk exceeded?
Resident
Soil
NC
NC
NC
Groundwater Use*
NC
NC
NC
Non -Residential Worker
Soil
NC
NC
NC
Groundwater Use*
NC
NC
NC
Construction Worker
Soil
NC
NC
NC
Recreator/Trespasser
Soil
NC
NC
NC
Surface Water*
NC
NC
NC
VAPOR INTRUSION CALCULATORS
Receptor
Pathway
CarcinogenicRiskHazard
Index
Risk exceeded?
Resident
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
NC
NC
NC
Indoor Air
8.5E-05
3.6E+00
YES
Non -Residential Worker
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
NC
NC
NC
Indoor Air
2.0E-05
8.6E-01
NO
CONTAMINANT MIGRATION CALCULATORS
Pathway
Source
Target Receptor Concentrations Exceeded?
Groundwater
Source Soil
Exceedence of 2L at Receptor?
NC
Source Groundwater
Exceedence of 2L at Receptor?
NC
Surface Water
Source Soil
Exceedence of 2B at Receptor?
NC
Source Groundwater
Exceedence of 2B at Receptor?
NC
Notes:
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk -based
closure.
3. NM = Not Modeled
4. NC = Pathway not calculated
North Carolina DEQ Risk Calculator

Risk for Individual Pathways
r
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID: Seneca Place Suite H
Exposure Unit ID: SG-1
DIRECT CONTACT SOIL AND WATER CALCULATORS
Receptor
Pathway
CarcinogenicRiskHazard
Index
Risk exceeded?
Resident
Soil
NC
NC
NC
Groundwater Use*
NC
NC
NC
Non -Residential Worker
Soil
NC
NC
NC
Groundwater Use*
NC
NC
NC
Construction Worker
Soil
NC
NC
NC
Recreator/Trespasser
Soil
NC
NC
NC
Surface Water*
NC
NC
NC
VAPOR INTRUSION CALCULATORS
Receptor
Pathway
CarcinogenicRiskHazard
Index
Risk exceeded?
Resident
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
2.0E-06
1.2E-01
NO
Indoor Air
NC
NC
NC
Non -Residential Worker
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
1.5E-07
9.2E-03
NO
Indoor Air
NC
NC
NC
CONTAMINANT MIGRATION CALCULATORS
Pathway
Source
Target Receptor Concentrations Exceeded?
Groundwater
Source Soil
Exceedence of 2L at Receptor?
NC
Source Groundwater
Exceedence of 2L at Receptor?
NC
Surface Water
Source Soil
Exceedence of 2B at Receptor?
NC
Source Groundwater
Exceedence of 2B at Receptor?
NC
Notes:
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk -based
closure.
3. NM = Not Modeled
4. NC = Pathway not calculated
North Carolina DEQ Risk Calculator

Risk for Individual Pathways
r
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID: Seneca Place Suite H
Exposure Unit ID: SG-2
DIRECT CONTACT SOIL AND WATER CALCULATORS
Receptor
Pathway
CarcinogenicRiskHazard
Index
Risk exceeded?
Resident
Soil
NC
NC
NC
Groundwater Use*
NC
NC
NC
Non -Residential Worker
Soil
NC
NC
NC
Groundwater Use*
NC
NC
NC
Construction Worker
Soil
NC
NC
NC
Recreator/Trespasser
Soil
NC
NC
NC
Surface Water*
NC
NC
NC
VAPOR INTRUSION CALCULATORS
Receptor
Pathway
CarcinogenicRiskHazard
Index
Risk exceeded?
Resident
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
1.3E-06
5.4E-02
NO
Indoor Air
NC
NC
NC
Non -Residential Worker
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
1.0E-07
4.3E-03
NO
Indoor Air
NC
NC
NC
CONTAMINANT MIGRATION CALCULATORS
Pathway
Source
Target Receptor Concentrations Exceeded?
Groundwater
Source Soil
Exceedence of 2L at Receptor?
NC
Source Groundwater
Exceedence of 2L at Receptor?
NC
Surface Water
Source Soil
Exceedence of 2B at Receptor?
NC
Source Groundwater
Exceedence of 2B at Receptor?
NC
Notes:
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk -based
closure.
3. NM = Not Modeled
4. NC = Pathway not calculated
North Carolina DEQ Risk Calculator

Risk for Individual Pathways
r
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID: Seneca Place Suite H
Exposure Unit ID: SG-3
DIRECT CONTACT SOIL AND WATER CALCULATORS
Receptor
Pathway
CarcinogenicRiskHazard
Index
Risk exceeded?
Resident
Soil
NC
NC
NC
Groundwater Use*
NC
NC
NC
Non -Residential Worker
Soil
NC
NC
NC
Groundwater Use*
NC
NC
NC
Construction Worker
Soil
NC
NC
NC
Recreator/Trespasser
Soil
NC
NC
NC
Surface Water*
NC
NC
NC
VAPOR INTRUSION CALCULATORS
Receptor
Pathway
CarcinogenicRiskHazard
Index
Risk exceeded?
Resident
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
5.8E-06
9.8E-01
NO
Indoor Air
NC
NC
NC
Non -Residential Worker
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
4.4E-07
7.8E-02
NO
Indoor Air
NC
NC
NC
CONTAMINANT MIGRATION CALCULATORS
Pathway
Source
Target Receptor Concentrations Exceeded?
Groundwater
Source Soil
Exceedence of 2L at Receptor?
NC
Source Groundwater
Exceedence of 2L at Receptor?
NC
Surface Water
Source Soil
Exceedence of 2B at Receptor?
NC
Source Groundwater
Exceedence of 2B at Receptor?
NC
Notes:
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk -based
closure.
3. NM = Not Modeled
4. NC = Pathway not calculated
North Carolina DEQ Risk Calculator

Risk for Individual Pathways
r
Version Date: June 2021
Basis: May 2021 EPA RSL Table
Site ID: Seneca Place Suite H
Exposure Unit ID: SG-4
DIRECT CONTACT SOIL AND WATER CALCULATORS
Receptor
Pathway
CarcinogenicRiskHazard
Index
Risk exceeded?
Resident
Soil
NC
NC
NC
Groundwater Use*
NC
NC
NC
Non -Residential Worker
Soil
NC
NC
NC
Groundwater Use*
NC
NC
NC
Construction Worker
Soil
NC
NC
NC
Recreator/Trespasser
Soil
NC
NC
NC
Surface Water*
NC
NC
NC
VAPOR INTRUSION CALCULATORS
Receptor
Pathway
CarcinogenicRiskHazard
Index
Risk exceeded?
Resident
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
1.7E-06
7.2E-02
NO
Indoor Air
NC
NC
NC
Non -Residential Worker
Groundwater to Indoor Air
NC
NC
NC
Soil Gas to Indoor Air
1.3E-07
5.7E-03
NO
Indoor Air
NC
NC
NC
CONTAMINANT MIGRATION CALCULATORS
Pathway
Source
Target Receptor Concentrations Exceeded?
Groundwater
Source Soil
Exceedence of 2L at Receptor?
NC
Source Groundwater
Exceedence of 2L at Receptor?
NC
Surface Water
Source Soil
Exceedence of 2B at Receptor?
NC
Source Groundwater
Exceedence of 2B at Receptor?
NC
Notes:
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk -based
closure.
3. NM = Not Modeled
4. NC = Pathway not calculated
North Carolina DEQ Risk Calculator