23079_Northern Telecom_IA Assessment Rpt_20200612

Mid Atlantic
Engineering & Environmental Solutions
June 12, 2020
Mr. Tyson Strutzenberg
Trinity Capital Advisors
3020 Carrington Mill Boulevard #425
Morrisville, North Carolina 27560
Subject: INDOOR AIR ASSESSMENT REPORT
NORTHERN TELECOM (PARK POINT)
4001 AND 4151 EAST NC HIGHWAY 54
DURHAM, DURHAM COUNTY, NORTH CAROLINA
BROWNFIELDS PROJECT NO.: 23079-19-032
MID -ATLANTIC JOB NO. 00OR3358.01
MID -ATLANTIC PE LICENSE: F-0967
Dear Mr. Stutzenberg:
409 Rogers View CourE
Raleigh, NC 276 10
office 919.250,9918
facsimile 919.250.9950
MAAONLINE.COM
We are pleased to present this Indoor Air Assessment Report for the above -referenced
site. We appreciate the opportunity to provide Trinity Capital Advisors with environmental
services. Please contact me at 919-250-9918 if any questions arise or if we may be of
further service.
Sincerely,
MID -ATLANTIC ASSOCIATES, INC.
4- d ���
Katie Lippard
Senior Project Manager
Darin McClure, P.E.
Principal Engineer
EXPERIENCE❑ CUSTOMER FOCUSED INNOVATIVE

INDOOR AIR ASSESSMENT REPORT
NORTHERN TELECOM
(PARK POINT)
4001 AND 4151 EAST NC HIGHWAY 54
DURHAM, DURHAM COUNTY, NORTH CAROLINA
Prepared For:
Mr. Tyson Strutzenberg
c/o Trinity Capital Advisors
3020 Carrington Mill Boulevard #425
Morrisville, North Carolina 27560
Prepared By:
Mid -Atlantic Associates, Inc.
409 Rogers View Court
Raleigh, North Carolina 27610
Mid -Atlantic Job No. OOOR3358.01
June 12, 2020
0 M i t Atlantic

Mid Atlantic
Engineering & Environmental Solutions
409 Rogers View Court
Raleigh, NC 27610
office 919.250.9918
facsimile 919.250.9950
— MAAONLINE.COM
INDOOR AIR ASSESSMENT REPORT
NORTHERN TELECOM
(PARK POINT)
4001 AND 4151 EAST NC HIGHWAY 54
DURHAM, DURHAM COUNTY, NORTH CAROLINA
BROWNFIELDS PROJECT NUMBER 23079-19-032
Mid -Atlantic Associates Job No. 00OR3358.01
Prepared For:
Mr. Tyson Strutzenberg
Trinity Capital Advisors
3020 Carrington Mill Boulevard #425
Morrisville, North Carolina 27560
June 12, 2020
Prepared By:
MID -ATLANTIC ASSOCIATES, INC.
Z'L' Q 4x"e
Katie A. Lippard
Senior Project M
Darin McClure:
Principal Engine;*
NCPE License No:
EXPERIENCED CUSTOMER FOCUSED INNOVATIVE

TABLE OF CONTENTS
1.0 GENERAL INFORMATION............................................................................................... 1
1.1 Introduction........................................................................................................... 1
1.2 Laboratory............................................................................................................ 1
2.0 SUMMARY OF FIELD ACTIVITIES.................................................................................. 1
3.0 SUMMARY OF LABORATORY ANALYTICAL RESULTS ............................................... 3
3.1 Indoor Air SamDlina Results................................................................................. 3
3.2 Risk Calculations..................................................................................................3
4.0 QUALITY ASSURANCE................................................................................................... 5
5.0 SUMMARY AND CONCLUSIONS.................................................................................... 5
DRAWINGS
Drawing 1.1 Topographic Site Map
Drawing 2.1 Sample Location Map
TABLE
Table 3.2 Summary of Chemical Constituents Detected in Indoor Air And Risk
Calculations
APPENDICES
Appendix A
Indoor Air Building Survey
Appendix B
Overall Site Plan
Appendix C
Photographic Log of Sample Locations
Appendix D
Laboratory Analytical Report and Chain -of -Custody Record for
Indoor/Ambient Air Samples
Appendix E
Indoor Air and Ambient Air Risk Calculations (All Compounds)
Appendix F
Indoor Air and Ambient Air Risk Calculations (Minus Acrolein)
Appendix G
Sub -Slab Soil Gas Vapor Intrusion Risk Calculations (January 2017)
0 Mid Atlantic

1.0 GENERAL INFORMATION
1.1 Introduction
The subject site is comprised of three parcels totaling 94.89 acres located within the
Research Triangle Park (RTP) area of Durham, North Carolina (Drawing 1.1). As part of
the redevelopment, the buildings located on the parcels are currently being renovated
into a modern, multi -tenant campus that will accommodate technology, office and life
science tenants. Minimal ground disturbance will be required as part of this
redevelopment and will be limited to demolition of select site interiors and structures,
asbestos -containing material (ACM) abatement, and landscape installation. Previous
assessments conducted in January 2017 included the collection of six sub slab soil gas
samples across the site. During recent discussions, a potential tenant requested indoor
air testing in their proposed space (Building D/F). The potential tenant approved the scope
of work consisting of the collection and analysis of four indoor air samples in Building D/F.
This report details the May 2020 indoor air sampling activities conducted within the
buildings on -site. The opinions included herein are based on our experience and the
information obtained during the study. This report is based on limited observations made
on the dates noted using the procedures described herein. If additional information
becomes available, we request the opportunity to review the information, reassess the
potential environmental concerns and modify our conclusions and recommendations, if
appropriate.
1.2 Laboratory
Enthalpy Analytical, LLC
800 Capitola Drive, Suite 1
Durham, North Carolina 27713
[phone]
Contact: Mr. David Myers
2.0 SUMMARY OF FIELD ACTIVITIES
The scope of work conducted as part of this vapor assessment was conducted in general
accordance with the field procedures outlined in the May 21, 2020 Indoor Air Assessment
Work Plan prepared by Mid -Atlantic and submitted to the North Carolina Department of
Environmental Quality (NCDEQ) Brownfields Program on May 21, 2020.
On May 22, 2020, Mid -Atlantic conducted a site reconnaissance to evaluate conditions prior
to the proposed indoor air sampling. The structure on -site is divided into three buildings
with two areas per building, as shown on Drawing 2.1 and the Overall Site Plan provided
in Appendix B. We noted significant demolition activities in Building A/B while demolition
in Buildings C/E and D/F appeared mostly complete. We noted two 5-gallon buckets of
hydraulic oil, one plastic paint remover container, one spray paint can, one metal cutting
lubricant jug and one can of pipe dope within Buildings C/E and D/F. The concrete slab
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Indoor Air Assessment Report June 12, 2020
Northern Telecom (Park Point) Page 2
Durham, North Carolina
observed in Buildings C/E and D/F appeared in good shape. Small, petroleum -fueled
equipment was observed in Building C/E. We were informed that petroleum -fueled
vehicles/equipment were/are used during demolition activities and that vehicles still
traverse through Building D/F during demolition. We recommended that the chemicals
observed be removed from the building, petroleum -fueled equipment be removed from the
building, and demolition activities halted during sampling activities. Since there was no
effective way to isolate Building D/F from other buildings, we recommended collecting two
additional indoor air samples, one in Building A/E and one in Building C/E for quality control
and data evaluation measures.
Prior to setting the indoor air sampling cannisters on May 26, 2020, Mid -Atlantic conducted
a site reconnaissance to document site conditions. The results of the survey are included
in the Indoor Air Building Survey and Sampling Form (Appendix A). We were informed
that the renovation and demolition activities were halted on May 21, 2020 and construction
materials, chemicals, and petroleum fueled vehicles/equipment used during demolition
activities were removed from Building D/F immediately prior to May 26, 2020. Upon arrival
we observed all of the loading dock roll doors and exterior entrance doors of the buildings
to be open. Prior to beginning the sampling event the doors were closed to simulate actual
occupant conditions. An HVAC system is present, but it was not operational at the time of
the sampling event. De minimis amounts of household cleaning supplies, a spray paint
can, two open containers of pipe sealant, floor sanders, and fork lifts were observed within
Building C/E. Piles of demolition debris and roped off areas were observed in Building A/B,
specifically in Area B. Although present in the building, no petroleum fueled machinery was
observed to be operating at the time of the sampling event.
On May 26-27, 2020, Mid -Atlantic mobilized to the site to collect six indoor air samples, one
duplicate indoor air sample, and one ambient outdoor air sample at the site. Indoor air
samples IA-1 through IA-4 and the duplicate sample (Dup-1) were collected in Building D/F
in the same manner and location as indicated in the May 21, 2020 Indoor Air Assessment
Work Plan. In addition, sample IA-5 was collected in Building C/E and sample IA-6 was
collected in Building A/B in Area B. The ambient outdoor air sample (OA-1) was collected
outside, north of Building A/B. A photograph log depicting the conditions of the spaces
during sampling can be found in Appendix C. The sample locations are shown on Drawing
2.1.
The indoor air samples and duplicate sample were collected at least ten feet from the
building entrances at a height of approximately four feet from the floor. The 24-hour air
samples were collected using individually certified, 6-liter, stainless steel, Summa canisters
at a maximum flow rate of 8-10 milliliters per minute (ml/min). The air samples were
collected and delivered to Enthalpy Analytical, LLC (Enthalpy) in Durham, North Carolina.
The samples were analyzed for volatile organic compounds (VOCs) using EPA Method
TO-15.
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Indoor Air Assessment Report June 12, 2020
Northern Telecom (Park Point) Page 3
Durham, North Carolina
3.0 SUMMARY OF LABORATORY ANALYTICAL RESULTS
3.1 Indoor Air Samplina Results
The laboratory analytical report and chain -of -custody record for indoor air samples collected
in May 2020 are provided in Appendix D and summarized in Table 3.1. The results of the
indoor air sampling activities were initially compared to the February 2018 NCDEQ
Residential and Non -Residential Vapor Intrusion Screening Levels (VISLs). Only three
compounds (acrolein, carbon tetrachloride and naphthalene) were detected above one of
their respective VISLs. As summarized, acrolein was detected in each of the indoor air
samples, the duplicate, and the ambient outdoor air sample at concentrations exceeding the
Residential and Non -Residential VISLs. The highest concentration of acrolein was detected
in the sample collected furthest from the proposed tenant space (IA-6 in Building A/B).
Naphthalene was detected in indoor air sample IA-6 (collected in Building A/B) at a
concentration exceeding the Residential and Non -Residential VISLs and in sample IA-1 at
a concentration exceeding the Non -Residential VISL. Carbon tetrachloride was detected in
samples IA-1, IA-2, IA-4 through IA-6, Dup-1, and OA-1 at concentrations exceeding its
Residential VISL.
Twenty-six other VOCs were detected in each of the primary indoor air samples, the
duplicate indoor air sample, and the ambient outdoor air sample at concentrations above
laboratory method detection limits but below the Residential and Non -Residential VISLs.
Additional discussion regarding risk calculations for the constituents detected in indoor air is
provided below in Section 3.2.
Acrolein, detected above its Residential and Non -Residential VISL in the indoor air and
ambient outdoor air samples, is a non -carcinogen that is ubiquitous in the environment and
can be a result of combustion of petroleum, tobacco smoke, pesticide application, and the
cooking of food, among other things. As such it is not typically included in a TO-15 analyte
list for vapor intrusion investigations. Based on its ubiquitous nature and the results of the
pre -sampling inventory of site activities performed by Mid -Atlantic, we do not consider
acrolein to be a contaminant associated with vapor intrusion at the site. From an
occupational exposure standpoint, the highest concentration of acrolein detected in the
indoor air samples (0.802 milligrams per cubic meter (ug/m3)) is well below the Occupational
Health and Safety Administration (OSHA) permissible exposure limit (PEL) of 250 ug/m3 for
acrolein.
3.2 Risk Calculations
The NCDEQ establishes VISLs for individual compounds for both residential and non-
residential worker (industrial/commercial) exposure scenarios. The North Carolina
Brownfields Program allows a maximum cumulative cancer risk for all carcinogens of 1.0E-
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Indoor Air Assessment Report June 12, 2020
Northern Telecom (Park Point) Page 4
Durham, North Carolina
4 and a maximum cumulative hazard index (HI) of 1 for all non -carcinogens in indoor air.
After comparing the indoor air sampling results to the NCDEQ Residential and Non -
Residential VISLs, we then calculated the cancer risk and non -cancer risk hazard quotient
using the highest concentration for each compound detected at the site that was above the
laboratory reporting limit (Appendix E). The cumulative Residential and Non -Residential
Worker exposure cancer risk sum and non -cancer hazard index for the indoor air is
summarized in the following table:
May 2020 Indoor Air Risk Calculations
Non -Residential
Non -Residential
Residential
Residential
Worker
Worker Cumulative
Calculated
Cumulative Non -
Sample ID
Calculated
Non -Carcinogenic
Carcinogenic
Carcinogenic
Carcinogenic
Hazard Index
Risk Sum
Hazard Index
Risk Sum
Max
Concentrations
2.6E-06
9.3E+00
1.1 E-05
3.9E+01
All Compounds)
Max
Concentrations
2.6E-06
1.5E-01
1.1 E-05
6.3E-01
Minus Acrolein
As indicated, the cumulative non -carcinogenic hazard index for the indoor air exceeded the
target cumulative non -cancer hazard index of 1 under residential and non-residential worker
exposure scenarios. The Residential and Non -Residential Worker cumulative carcinogenic
risk sums did not exceed the target sum of 1.0E-04. Acrolein, which was not included in the
analyte list for the January 2017 sub -slab soil gas laboratory report, appears to be the
primary compound that is elevating the non -carcinogenic hazard index to levels above the
acceptable risk. As previously stated and according to the US National Library of Medicine,
and National Institutes of Health, acrolein is ubiquitous in the environment and can be a
result of combustion of petroleum, tobacco smoke, pesticide application, and the cooking
of food, and is likely not a product of vapor intrusion. When risk calculations were
conducted removing acrolein from the input, the cancer risk sum and cumulative non -cancer
hazard index for indoor air did not exceed the target risk sum of 1.0E-4 or the target
cumulative non -cancer hazard index of 1 for either the residential or non-residential worker
exposure scenarios (Appendix F).
The Residential and Non -Residential Worker cumulative cancer risk and cumulative non -
cancer hazard index were also calculated for the January 2017 sub -slab soil gas data for
comparison purposes. The risk was calculated using the highest detected concentration for
each compound in the primary samples and duplicate sample (Appendix G). The
Residential and Non -Residential Worker exposure cumulative cancer risk sum and
cumulative non -cancer hazard index for the sub -slab soil gas are summarized in the
following table:
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Indoor Air Assessment Report
Northern Telecom (Park Point)
Durham, North Carolina
June 12, 2020
Page 5
January 2017 Soil Gas to Indoor Air Risk Calculations
Non -Residential
Non -Residential
Residential
Residential
Worker Calculated
Worker
Calculated
Cumulative Non -
Exposure Unit
Carcinogenic
Cumulative Non-
Carcinogenic
Carcinogenic
Risk Sum
Carcinogenic
Risk Sum
Hazard Index
Hazard Index
Max
8.2E-07
3.9E-02
1.1 E-05
5.0E-01
Concentrations
As indicated, the cumulative cancer risk sum and cumulative non -cancer hazard index for
soil gas did not exceed the target risk sum of 1.0E-4, nor the target cumulative non -cancer
hazard index of 1, for either the residential or non-residential worker exposure scenarios.
4.0 QUALITY ASSURANCE
One duplicate indoor air sample was collected during sampling activities. The duplicate
sample was analyzed by EPA Method TO-15 (Table 3.1). Mid -Atlantic filled each
laboratory provided Summa canister such that the final vacuum in the canister was at
least five inches of mercury. Summa canisters were shut off after 24-hours. The chain -of -
custody was completed and packed with the samples. The Mid -Atlantic field technician
delivered the samples to the Enthalpy laboratory located in Durham, NC.
5.0 SUMMARY AND CONCLUSIONS
The objective of this assessment was to test the indoor air environment at the subject
property. Mid -Atlantic offers the following summary of observations and conclusions
based on the results of this assessment as they pertain to the subject site:
• Only three compounds (acrolein, carbon tetrachloride and naphthalene) were
detected in the indoor air above one of their respective VISLs.
• The concentration of naphthalene was the highest in the sample collected in Building
A/B (the building with active demolition activities), indicating that these activities may
be contributing to the concentrations of naphthalene (and potentially other
constituents) in the building.
• Acrolein was detected in each indoor air sample and the ambient outdoor air sample
at concentrations exceeding the Residential and Non -Residential VISL.
• Acrolein is a non -carcinogenic, ubiquitous compound commonly found in the
environment. In addition, major sources/activities associated with the presence of
acrolein in air have occurred historically and/or recently at the site (combustion of
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Indoor Air Assessment Report
Northern Telecom (Park Point)
Durham, North Carolina
June 12, 2020
Page 6
petroleum, pesticide application, etc.). As such, we do not consider acrolein a
contaminant of concern as it pertains to vapor intrusion.
Evaluating the vapor intrusion risk using the indoor air data (minus acrolein) results
in acceptable risk for both Residential and Non -Residential Worker scenarios.
The Residential and Non -Residential Worker cumulative non -cancer hazard indices
and cancer risk sums for the indoor air samples and 2017 sub -slab soil gas samples
are similar.
The highest concentration of acrolein detected in the indoor air samples (0.802
ug/m3) is well below (0.32%) the OSHA PEL of 250 ug/m3 for acrolein.
Based on the results of this investigation and data collected in 2017, vapor intrusion does
not appear to be causing an unacceptable risk scenario at the site. The acrolein detected in
the indoor air samples is present at concentrations well below the OSHA PEL. We would
also anticipate that these levels will abate further once demolition/construction activities are
complete and the spaces are conditioned consistent with their proposed use.
Q Mid Atlantic

DRAWINGS
10 Mid Atlantic

a
REFERENCES:
1. SOUTH EAST DURHAM, NC DIGITAL RASTER GRAPHICS,
USGS. SCANNED FROM 1:24,000-SCALE DURHAM, NC
TOPOGRAPHIC MAPS, PUBLISHED 2013, USGS.
2. INSET MAP DIGITAL DATA FROM 2002 NATIONAL TRANSPORTATION ATLAS,
BUREAU OF TRANSPORTATION STATISTICS, WASHINGTON, D.C.
3. PROPERTY BOUNDARY DATA FROM WAKE COUNTY GIS.
TOPOGRAPHIC SITE MAP
Mid AtlantiC 4001 AND 4151 NC HWY 54
Enginaering d E"ifo11n1an[3l5olu[lom DURHAM, NORTH CAROLINA
SCALE: 1:24,000
Feet
0 2,000 4,000
DRAWN
DATE:
BY: GCH
NOVEMBER 2019
DRAFT
JOB NO:
CHECK:
OOOR3358.01
ENG.
GIS NO:
CHECK:
2G-R3358.01-1
APPROVAL:
DWG NO: 1.1

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1. -inch 300 feet - ;� -
0 500 1,000 1,500 2,000 S PARCEL BOUNDARIES
Feet
DRAWN BY: KRC DATE: JUNE 2020
SAMPLE LOCATION MAP DRAFT CHECK
FPARK POINT BY: JOB NO.: R3358.01
Mid Atlantic4001 AND 4151 EAST HIGHWAY 54 ENGINEER CHECK GIS NO.: 3G-R3358.01-2_Samp
Engineering & Environmental Solutions BY:
DURHAM, NORTH CAROLINA APPROVED BY: DRAWING NO.: 2.1
REFERENCE: PARCEL BOUNDARIES FROM NC ONEMAP. PROPOSED DEVELOPMENT PLAN FROM TRINITY CAPITAL ADVISORS

TABLE
10 Mid Atlantic

TABLE 3.1
SUMMARY OF CHEMICAL CONSTITUENTS DETECTED IN INDOOR AIR
AND RISK CALCULATIONS (24-HOUR SUMMA CANISTERS)
NORTHERN TELECOM (PARK POINT)
DURHAM, NORTH CAROLINA
MID -ATLANTIC JOB NO. OOOR3358.01
Max
NCDEQ DWM Non -Residential Indoor
SamplelD
IA-1
IA-2
IA-3
IA-4
Dup-1 (IA-3)
IA-5
IA-6
OA-1
NCDEQ DWM Residential Indoor Air
Concentration
Air
Screening Levels
(IA-1 thorugh IA-
February 2018 (ug/m3)
Screening Levels
Sampling Date
5/26/2020
5/26/2020
5/26/2020
5/26/2020
5/26/2020
5/26/2020
5/26/2020
5/26/2020
6 and Dup-1)
February 2018 (ug/m3)
1,2,4-Trich lorobenzene
0.396
<0.297
<0.299
<0.299
<0.306
<0.300
<0.303
<0.307
0.396
4.2E-01
1.8E+00
1,2,4-Trimethylbenzene
1.21
0.714
0.860
0.747
0.833
0.759
1.07
<0.204
1.21
1.3E+01
5.3E+01
1,3,5-Trimethyl benzene
0.339
0.220 J
0.290
0.246
0.302
0.248
0.326
<0.204
0.339
1.3E+01
5.3E+01
1,4-Dioxane
<0.147
<0.144
<0.145
<0.145
<0.149
<0.146
0.472
<0.149
0.472
5.6E-01
2.5E+00
2-Hexanone (Methyl butyl ketone)
0.436 J
0.343 J
0.496
0.308 J
0.450 J
0.455 J
1.73
<0.170
1.73
6.3E+00
2.6E+01
4-Ethyltoluene
0.259
<0.197
<0.198
<0.198
<0.203
<0.199
0.224 J
<0.204
0.259
NS
NS
Acetone
10.7
10.8
10.6
9.31
11.3
10.6
20.7
4.38
20.7
6.5E+03
2.7E+04
Acetonitrile
0.345
0.336
0.283
0.266
0.415
0.393
0.356
0.309
0.415
1.3E+01
5.3E+01
Acrolein
0.616
0.526
0.683
0.523
0.748
0.633
0.802
0.156
0.802
4.2E-03
1.8E-02
Benzene
0.323
0.285
0.308
0.250
0.309
0.308
0.671
0.161
0.671
3.6E-01
1.6E+00
Carbon disulfide
0.142
0.216
0.129 J
0.156
0.129 J
0.160
0.250
<0.129
0.250
1.5E+01
6.1 E+02
Carbon tetrachloride
0.504
0.530
0.468
0.496
0.497
0.552
0.496
0.502
0.552
4.7E-01
2.0E+00
Chloromethane
1.32
1.44
1.36
1.43
1.36
1.48
1.39
1.37
1.48
1.9E+01
7.9E+01
Ethanol
23.0
14.7
21.7
17.5
22.2
18.9
9.53
1.67
23.0
NS
NS
Ethyl acetate
0.179
0.202
0.305
0.584
0.972
2.52
<0.147
0.308
2.52
1.5E+01
6.1 E+01
Ethylbenzene
0.573
0.364
0.459
0.396
0.468
0.409
1.05
<0.108
1.05
1.1 E+00
4.9E+00
Trichlorofluoromethane (fFreon 11 (CC13F))
1.66
1.55
1.57
1.55
1.56
1.56
1.92
1.34
1.92
NS
NS
1,1,2-Trich loro-1,2,2-tirfIuoroethane (Freon 113 (C2CI3F
1.55
2.22
1.41
1.96
1.46
1.58
1.03
0.545
2.22
1.0E+03
4.4E+03
Dichlorodifluoromethane (Freon 12 (CC12F2))
2.53
2.63
2.85
2.65
2.76
2.68
3.48
2.31
3.48
2.1 E+01
8.8E+01
Heptane
<0.167
0.250
0.191
0.264
0.264
0.251
0.333
<0.170
0.333
8.3E+01
3.5E+02
Hexane
0.233
0.225
0.234
0.215
0.293
0.244
0.255
<0.146
0.293
1.5E+02
6.1 E+02
Isopropyl alcohol
2.39
1.76
2.25
1.94
2.89
2.22
4.81
0.451
4.81
4.2E+01
1.8E+02
Isopropylbenzene
<0.200
<0.197
<0.198
<0.198
<0.203
<0.199
0.225 J
<0.204
0.225
NS
NS
m-/p-Xylenes
1.87
1.15
1.45
1.23
1.52
1.31
3.10
0.198 J
3.10
2.1 E+01
8.8E+01
Methyl ethyl ketone (2-Butanone)
1.49
1.43
1.41
1.32
1.59
1.63
2.74
0.435
2.74
1.0E+03
4.4E+03
Methyl isobutyl ketone
0.391
0.277
0.660
0.268
0.680
0.552
1.10
<0.170
1.10
6.3E+02
2.6E+03
Methylene chloride
0.566
0.556
0.553
0.613
0.720
0.644
0.516
0.582
0.720
1.0E+02
5.3E+02
Naphthalene
0.260
<0.210
<0.211
<0.211
<0.216
<0.212
0.528
<0.217
0.528
8.3E-02
3.6E-01
n-Octane
0.204 J
<0.187
<0.188
<0.188
<0.193
<0.189
0.248
<0.193
0.248
NS
NS
o-Xylene
0.762
0.487
0.622
0.543
0.615
0.528
1.12
<0.180
1.12
2.1 E+01
8.8E+01
Propylene
0.605
0.618
0.595
0.536
0.596
0.595
0.739
0.321
0.739
6.3E+02
2.6E+03
Styrene
<0.173
<0.171
<0.172
<0.171
0.247
<0.172
0.479
<0.176
0.479
2.1 E+02
8.8E+02
Tetrahydrofuran
0.656
0.329
0.510
0.420
0.570
0.426
0.819
<0.122
0.819
4.2E+02
1.8E+03
Toluene
0.901
0.707
0.818
0.812
0.960
0.845
0.914
0.314
0.960
1.0E+03
4.4E+03
Residential Acceptable Carcinogenic
RESIDENTIAL RISK CALCULATIONS SUMMARY (IA-1 through IA-6 and Dup-1)
Sum Risk Range and Maximum Non -Cancer Hazard Index
Maximum Concentrations (All Compounds)
Calculated Sample Sum Cancer Risk
NC
NC
NC
NC
NC
NC
NC
1.1 E-05
3.9E+01
1.0 E-04
Calculated Sample Non -Carcinogenic Hazard Index
NC
NC
NC
NC
NC
NC
NC
EqNC
HI=1
Maximum Concentrations (Minus Acrolein)
Calculated Sample Sum Cancer Risk
NC
NC
NC
NC
NC
NC
NC
NC
1.1 E-05
1.0 E-04
Calculated Sample Non -Carcinogenic Hazard Index
NC
NC
NC
NC
NC
NC
NC
NC
6.3E-01
HI=1
Non -Residential Acceptable Carcinogenic
NON-RESIDENTIAL RISK CALCULATIONS SUMMARY (IA-1 through IA-6 and Dup-1)
Sum Risk Range and Maximum Non -Cancer Hazard Index
Maxium Concentrations (All Compounds)
Calculated Sample Sum Cancer Risk
NC
NC
NC
NC
NC
NC
NC
NC
2.6E-06
9.3E+00
1.0 E-04
Calculated Sample Non -Carcinogenic Hazard Index
NC
NC
NC
NC
NC
NC
NC
NC
HI=1
Maximum Concentrations (Minus Acrolein)
Calculated Sample Sum Cancer Risk
NC
NC
NC
NC
NC
NC
NC
NC
2.6E-06
1.0 E-04
Calculated Sample Non -Carcinogenic Hazard Index
NC
NC
NC
NC
NC
NC
NC
NC
1.5E-01
HI=1
Notes:
Concentration units; ug/m3
<1.96 = Not detected above the lab method detection limit
Italicized = Screening level exceeds laboratory method detection limit
NC = Risk calculation not conducted
NS = No standard established
= Control samples outside of area of concern
Bold = Concentration detected above laboratory method detection limit
Bold
Bold
1.1 E+01
------------------------
2.5E+00
............. ...............
No concentration above laboratory method detection limit
= Concentration exceeds Residential Indoor Air Screening Level
= Concentration exceeds Non -Residential Indoor Air Screening Level
= Exceeds Residential risk calculation screening criteria
= Exceeds Non -Residential risk calculation screening criteria

APPENDIX A
INDOOR AIR BUILDING SURVEY
Mid Atlantic

INDOOR AIR BUILDING SURVEY
and SAMPLING FORM
Site Name: _Af,
Preparer's name: d!5�+,j
Preparer's affiliation: `A i
1D#: ? 30?q l � - 02e
Date: laa z4d Phone #: 76 ,-1 6 o 9 <:3N
Part I - Occupants
Building Address:
Property Contact: 4�,f o.•; f� Owner / Renter 1 her �rrP.
Contact's Phone: home { } work (qA } 13 a�(3G cell }
# of Building occupants: Children under age 13 Children age 13-18 Adults
Part I1— Building Characteristics
Building type: residential // multi -family residential 6ce) strip mall / commercial / industrial
Describe building: o-" YuYear constructed: 7j'— ( 4 &
Sensitive population:
day care 1 nursing ho3ne 1 hospital 1 school 1 other (specify):
Number of floors below grade: 0' Mull basement 1 crawl space slab on grade
Number of floors at or above grade: f
Depth of basement below grade surface: d) ft. Basement size: YA- ft2
Basement floor construction: c ncrete 1 dirt 1 floating 1 stone l other (specify):
Foundation walls: oared concrete 1 inder blocks 1 stone 1 other (specify)
/t./ 1.4—
Basement sump present? Yes /Sump pump? Yes I iW Water in su np? Yes 1 qP V
Type of heating systetn (circle all that apply):
hot air circulation hot air radiation wood steam radiation
heat pump hot water radiation kerosene heater electric baseboard
other (specify): 0-- a
Type of ventilation system (circle all that apply):
central air conditioning mechanical fans bathroom ventilation fans
individual air conditioning units kitchen range hood fan outside air intake
other {specify}: do-f- p +Ong. {
Type of fuel utilized {circle all that apply}:
Natural gas 1 ectric fuel oil 1 wood 1 coal 1 solar 1 kerosene
Are the basement walls or floor sealed with waterproof paint or epoxy coatings? Yes I60

Part V — Miscellaneous Items
Do any occupants of the building smoke? Yes 1 A�_ How often?
Last time someone smoked in the building? hours 1 days agn
Does the building have an attached garage directly connected to living space? Yes 16D
If so, is a car usually parked in the garage? Yes 1 No a 4
Are gas -powered equipment or cans of gasoline/fuels stored in the garage? Yes I No
Do the occupants of the building have their clothes dry cleaned? Yes 1 e
If yes, how often? weekly 1 monthly 13-4 tunes a year
Do any of the occupants use solvents in work? Yes 1
If yes, what types of solvents are used?
If yes, are their clothes washed at work? Yes 1 No
Have any pesticides/herbicides been applied around the building or in the yard? Yes 1 No
If so, when and which chemicals? t),j e2
Has there ever been afire in the building? Yes 1 No If yes, when?
Has painting or staining been done in the building in the last 6 months? Yes NO
If yes, when Co, �� P �an�dwber�e.
Part VI — SamplingSaMpling Information
4�
Sample Technician: 4 '�7 Phone number: {_V�(
Sample source: oor rawispace Air/ Sub -Slab 1 Near Slab Soil Gas/ Exterior Soil Gas
Sampler Type: Tedlar bag 1 Sorben Stainless Steel Canist 1 Other (specify):
Analytical Methott6�_? 1 TO-17 1 other: Cert. Laboratory --
Sample locations (floor, room):
Field ID # - ':�4 r- I —5_ field ID #
Field ID # - T4 —5 7: , ,A Field ID #
Were "Instructions for Occupants" followed? Yes n
Knot, describe modifications:

Is there a whole house fan?
Septic system?
Irrigation/private well?
Yes I(f :)
Ye.r 1 Yes {beet not used)
Yes 1 Yes ut not used) I No
Type of ground cover outside of building: grass concreteCsphalt
Existing subsurface depressurization (radon) system in place? Yes 1
Sub -slab vapor/moisture barrier in place'? Yes I�
Type of barrier; [[��
Part III - Outside Contaminant Sources
other (specify)
NO � � active 1 passive
Other stationary sources nearby (gas stations, emission stacks, etc.): 5 0-1 -S S -c,& cle-_ III
Heavy vehicular traffic nearby (or other mobile sources): �_ , �� f.. I BC& Fi-A"
Part IV — Indoor Contaminant Sources ' 9 Si
Identify all potential indoor sources found in the building (including attached garages) and crawlspace (if
present), the location of the source (floor and room), and whether the item was removed from the building
48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items
should be completed at least 24 hours prior to the commencement of the indoor air sampling event.
Potential Sources
Location(s)
Removed
(Yes 1 No 1 NA)
Gasoline storage cans
Gas -powered equipment
Kerosene storage cans
Paints / thinners / strippers
d4
Cleaning solvents
Oven cleaners
Carpet 1 upholstery cleaners
Other house cleaning products
Moth balls
Polishes 1 waxes
Insecticides
Furniture 1 floor polish
Nail polish 1 polish remover
Hairspray
Cologne 1 perfume
Air fresheners
Fuel tank (inside building)
NA
Wood stove or fireplace
NA
New furniture 1 upholstery
New carpeting 1 flooring
NA
Hobbies - glues, paints, etc.

Provide Drawing of Sample Location(s) in Building
Part VII - Meteorological Conditions
Was there significant precipitation within 12 hours prior to (or }during) the sam ling event? Yes No
Describe the genera] weather conditions:
Part VIII — General Observations
Provide any information that inay be pertinent to the sampling event and may assist in The data
interpretation process (e.g., observed that drycleaner operated with door or windows propped open for
ventilation).
-R�•-ti
`CJ.j c4^5t� C4; -n -
(Adapted from the N]DEP Vapor Intrusion Guidance, October 2005)

APPENDIX B
OVERALL SITE PLAN
WFAk
Mid Atlantic

N/F
NC RAILROAD COMPANY SITE LEGEND
/ PIN: 0747-01-49-4319 \ \
USE: PUBL SVC/RAILROADS \ \ SIGNAGE
/ ZONING: SRP \ \
TIER: SUBURBAN/METRO NORTH CN YARD LIGHTS
LIGHT POLE
CIL POWER POLE
TRAFFIC DIRECTIONAL ARROW
GRAPHIC SCALE ACC ACCESSIBLE PARKING STALL
o so soo zoo
— VAN VAN ACCESSIBLE PARKING STALL
1 inch 100 ft.
— XX PARKING SPACE COUNT
ACCESSIBLE RAMPS
11� /� �, \ \ \ TYPE AQ TYPE © TYPE QC
o \ % \ \ \ \ \ \ / / • • • • • • • • i ACCESSIBLE ROUTE
F°A \\ \ \ // .ii�ii�ii�ii�ii. PHASE LINE
N/F - - PROPERTY LINE
III"(A� - 11 F \ \ \ NC RAILROAD COMPANY - - - PIN: 0747--48-2651
USE: PUBL SOVC/RAILROADS - - - - RIGHT-OF-WAY LINE
ZONING: SRP LOT LINE
21 / ` o . , \ \ TIER: SUBURBAN
f \ 'o,� \ \ \ \ \ — — EASEMENT LINE
CENTERLINE
5 \ �\
23.4?�99A• \ / HEAVY DUTY
loll� 2 15. \ \ \ / / \ \ / ASPHALT PAVEMENT
N5'04'32"E
AREA B 44 \ 103.92'
N6'43'48"E
/ �- �/' 53.49' 100' ZONING\ N/F
SETBACK/ \ \ \ NC RAILROAD COMPANY
_ \ PIN: 0747-01-48-2243
_+- - BUILDING\`\°� // \ \ \ \ USE: PUBL SVC/RAILROADS
33 ZONING: SRP
A/B / \ _ \ \ s39, \ \ \ TIER: SUBURBAN/METRO NORTH CN
100,
t. FITNESS N. � AREA"A"'/
\ \ \\\ \\ F \ \ \
N67'04'52"W \� •_: f�j \\ \ /
i
288.80'
yr v
AREA A �� �° �v i ��✓ A AA\ �8 v v
>
A1� ? N67'04'52'W \ X ,c V A V A / V A AREA"W
228.03' A N1944'10"W HEETC2.
287.30' !
`P� % s S22'55'08"W
�� ", 1. �'• QC�` i \ 231.11' /_- '
N67'04.52"W 93.00'
�
N22.55.08"E ` ` ::� �:. \ \ / o
X�x VA� \ \ �R• °QS°, \ \ \� o
00
233.70'.. r' '• • `\
\ / / / / \ ' '� : • (f .+� .'e . '.: . .• •%���// ' \ \ \\ \ \ \ , �\ AREA "C" SHEET
BUILDING AREA C `' '': ��// —� \ \\ �\ \ / N/F ETC2. C2.04
�\ \ / / /� \ \ Oa •�' L� / �o° NC RAILROAD -COMPANY /
\ � o\ \ / � / / \\ � ® \ � \ s . � : •.. .. .. � � �\\ \ � ` J 'vat �s, PIN: 0747 01 47 3714
SVC USE: PUBL RAILROADS
/
/ ,/' \ � • « ice• '� � \� / / �\ 1 \ ZONING: SRP
n I / \\ V 1� �\ _ ~' \ \\ f \ \ \ \ TIER: METRO NORTH CN
/ '/ !• r AREA E
J
/ M �=
�%
V A A \ \ \VA' Aik
72
\ BUILDING~ g \\ �\ ` -�-1 30 \ \ NC RAILROAD COMPANY
\ \ S25'30'22"W \ \ \\ `� G / ®� �\ V/ / _ \! \ 71 ��/ J PIN: 0747-01-46-2932
348.19' /� / \ \ 0 \ I'll
\D/F\ ZONING. SRP
/ \ / \ \ 4R• �y USE: PUBL SVC/RAILROADS
=3 AC. /� �\ �ji�1 // \ \\ \ ��/� \ \\ �T`F TIER: METRO NORTH CN /
S22' 8 y✓
s ' AREA D\�\l 71 71
AREA F �✓ /� \
71 � EX. TENNIS
7 \� �� \�//� \;Cj // \ 40 ®38 "% COURT II \\� —°�98, /
100' ZONING \ �\ \ \ \ \\ `/� 7 /J�/� / / �� \\\ Y C 8\ `\��/ 1 6 \ RN,
\ \ ® 34� /I � (r S67'39'08"E
SETBACK �� \ \ (/ \/ / �\ �jY \\ \ 0 \�/ �J' / 4.99.
°o\ \ \ \ \ \ ✓�\�\ \\ �(//� \ \� `. \ \ O © /�\ \� %� \ I I / R=94.26ol
\
f S30'59'13"E
EX. VOLLEYBALL \ \ \ '\` / /" / S30'59'13"E \
COURT \ \ ( \ �/ / \/ �' 28.02'
\\ w
Lo
Sv
\ sa \ \ / \�\\, • ` / �( I / !1L DUKE ENERGY CAROLINAS LLC
NEW LOT 3 \ / / I� / / Z PIN: 0747-01- IC FIELDS
1 AREA=41 .19 AC. �^ \ �/ //� \ _� / USE: RZONIING: SRP
FIELDS
TIER: SUBURBAN/METRO NORTH CN
i
N/F
BECTON DICKINSON & COMPANY 1026
PIN: 1-19-8542
USE: IND/BIOTE/BIOTECH - BIOPHARM
ZONING: SRP
TIER: SUBURBAN S5'29'22"W \
219.11'
\ \\ LOOD ZONE "X..
\ \ S21'14122"W \ FEMA PANEL NUMBER 0747
\ \ 239.99' i �\ _ EFFECTIVE 05/02/06 / /-`_ -_- _ - - -_ - - - - - - - - - - / \�I 30' DUKE POWER COMPANY \\ N47 16'04"E
40' UTILITY \ \ \ \ \ /// 111 \ \ / , \` I- UTILITY147 PG. 72.26'
EASEMENT \ \ / \ \ \ \J� J1 \ D.B. 1018 PG. 266 _
\ \ \ \\ \ J 1 Nv
--------_D.B. 1020 PG. 401
30' DUKE POWER COMPANY 10' GENERAL UTILITY�I D.B. 1074 PG. 477,I` UTILITY EASEMENT EASEMENT , A J l , I — - - - - - - - - _ - - - -
\ \ \ EX. POND v�J I I� D.B. 147 PG. 327 D.B. 1021 PG. 4SJ�/v " v�J �I - �1- - - - - - S7l'77 22 E _
\ \ \ \ J S41'18'03"E S42'42'16"E
D.B. 1018 PG. 266 11 581.74' 103.49'
\ I \ PERMANENT SLOPE EASEMENT D.B. 1020 PG. 401 739.34'- _ - - - - - - - - - �4,- - - _ -
_ vD.B.1. _.----- - --- --_ — ----
D.B. 6528 PG. 158 I I � _ _ D074PG477S41'18'03"E
S66'44'22"W -�S 1' 8'03"E
/ 145.78' / I ___-------Igb3"E 237.28'
R=19B4.86' _ _ 175.00
/ 2712'W
2.20L=480.14'
I
EXISTING = _
NC HIGHWAY
5 R/W) - __- ----N/F------
�� (VARIABLE WIDTH P _ _ — �1\ � - - - - - _ - - - -T-
r RESEARCH TRIANGLE FOUNDATION
_ _ _ _ OF NORTH CAROLINA
FMRNRTP LLC I PIN: 0747-01-36-4637
PIN: 0747-17-74-2148 I USE: VACANT
USE: COM/OFFICE BUILDING I ZONING: OL, CASE:P00-18
- - - - - - ZONING: SRP TIER: METRO NORTH CN
TIER: SUBURBAN/METRO NORTH CN PRELIMINARY DRAWING - NOT RELEASED FOR CONSTRUCTION
'J
McADAMS
The John R. McAdams Company, Inc.
2905 Meridian Parkway
Durham, NC 27713
phone [phone]
fax [phone]
license number: C-0293, C-187
www.mcadamsco.com
CLIENT
GENSLER
530 HILLSBOROUGH STREET
RALEIGH, NORTH CAROLINA 27603
P H 0 N E: 919. 239. 7831
W
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•Q i
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'•,��;�'••N� I NEB•.
REVISIONS
NO. DATE
1 03. 23.2020 REVISED PER 15T SITE PLAN SUBMISSION
2 05. 06. 2020 REVISED PER 2ND SITE PLAN SUBMISSION
PLAN INFORMATION
PROJECT NO
FILENAME
CHECKED BY
DRAWN BY
SCALE
DATE
SHEET
G N L-19010
G N L19010-OAS1
RS
GH
1"=100'
12. 10. 2019
OVERALL SITE PLAN
C2.00

APPENDIX C
PHOTOGRAPHIC LOG OF SAMPLE LOCATIONS
10 Mid Atlantic

y
ea".
5• I
a
Northern Telecom (Park Point) — 4001 and 4151 East NC Hwy 54
Durham, North Carolina
Photo 1 — Indoor Air sample IA-1 collected from Building
D/F.
Photo 3 — Indoor Air sample IA-3 and duplicate sample
Dup-1 collected from Building D/F
Photo 5 — Indoor Air sample IA-5 collected from Building
C/E.
Photo 2 — Indoor Air sample IA-2 collected from Building
D/F.
Photo 4 — Indoor Air sample IA-4 collected from Building
D/F.
Photo 6 — De minimis household cleaners and spray paint
cans in Building C/E.
Mid -Atlantic Associates, Inc. May 2020

Northern Telecom (Park Point) — 4001 and 4151 East NC Hwy 54
Durham, North Carolina
II
Photo 7 — Indoor Air sample IA-6 collected from Building
A/B.
Photo 8 — Debris piles present in Area B of Building A/B
Mid -Atlantic Associates, Inc. May 2020

APPENDIX D
LABORATORY ANALYTICAL REPORT
AND CHAIN -OF -CUSTODY RECORD FOR
INDOOR/AMBIENT AIR SAMPLES
10 Mid Atlantic

`r
ENTHALPY
ANALYTICAL
Mid- Atlantic
Associates, Inc.
409 Rogers View Ct
Raleigh, NC 27610
Northern Telecom
Durham, NC
Client Project #R3 3 5 8.01
Analytical Report
(0520-176)
EPA Method TO-1 S
TO-15 Target Compound List
Enthalpy Analytical, LLC
Phone: (919) 850 - 4392 / Fax: (919) 850 - 9012 / www.enthalpy.com
800-1 Capitola Drive Durham, NC 27713-4385

I certify that to the best of my knowledge all analytical data presented in this report:
• Have been checked for completeness
• Are accurate, error -free, and legible
• Have been conducted in accordance with approved protocol, and that all deviations and
analytical problems are summarized in the appropriate narrative(s)
This analytical report was prepared in Portable Document Format (.PDF) and contains 37 pages.
QA Review Performed by—Quentisha L. Forrester
Report Issued: 05/28/2020
EA# 0520-176 Page 2 of 37

�)
ENTHALFY
A N' A L Y i I C A L
Results
EA# 0520-176 Page 3 of 37

Quantitation Report
Enthalpy Analytical, LLC
Sample Name
Sample Info
Data File
Dilution
Pressurization Factor
Acquisition Date
Instrument Method
Matrix
: IA-1
0520-176; *0.667=750mL load; Can *24090
X2001892.D
0.667
1.744
2020-05-27 14:02:30
T015-SCN.M
AIR
Concentration
RL
MDL
Concentration
RL
MDL
Target Compound
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
(PPBV)
(PPBV)
(PPBV)
(ug/m3)
(ug/m3)
(ug/m3) Flag*
Propylene
0.352
0.0446
0.0407
0.605
0.0767
0.0701
Freon 12 (CC12F2)
0.512
0.0447
0.0407
2.53
0.221
0.201
Freon 114 (C2Cl2F4)
ND
0.0463
0.0407
ND
0.324
0.285
Chloromethane
0.640
0.0452
0.0407
1.32
0.0934
0.0841
Chloroethene (Vinyl chloride)
ND
0.0464
0.0407
ND
0.119
0.104
1,3-Butadiene
ND
0.0449
0.0407
ND
0.0994
0.0901
Bromomethane
ND
0.0456
0.0407
ND
0.177
0.158
Chloroethane
ND
0.0466
0.0407
ND
0.123
0.107
Bromoethene (Vinyl bromide)
ND
0.0456
0.0407
ND
0.200
0.178
Freon 11 (CC13F)
0.295
0.0480
0.0407
1.66
0.270
0.229
Ethanol
12.2
0.0465
0.0465
23.0
0.0877
0.0877
Acrolein
0.269
0.0451
0.0407
0.616
0.103
0.0934
Freon 113 (C2Cl3F3)
0.202
0.0461
0.0407
1.55
0.353
0.312
1,1-Dichloroethene
ND
0.0463
0.0407
ND
0.184
0.161
Acetone
4.49
0.0459
0.0407
10.7
0.109
0.0967
Carbon disulfide
0.0456
0.0462
0.0407
0.142
0.144
0.127 1
Isopropyl alcohol
0.972
0.0461
0.0407
2.39
0.113
0.100
AIIyl chloride (3-chloropropene)
ND
0.0464
0.0407
ND
0.145
0.127
Acetonitrile
0.205
0.0459
0.0407
0.345
0.0771
0.0684
Methylene chloride
0.163
0.117
0.117
0.566
0.405
0.405
trans-1,2-Dichloroethene
ND
0.0470
0.0407
ND
0.186
0.161
Methyl tert-butyl ether
ND
0.0470
0.0407
ND
0.169
0.147
Acrylonitrile
ND
0.0467
0.0407
ND
0.101
0.0884
Hexane
0.0660
0.0469
0.0407
0.233
0.165
0.143
1,1-Dichloroethane
ND
0.0454
0.0407
ND
0.184
0.165
Vinyl acetate
ND
0.0467
0.0407
ND
0.164
0.143
cis-1,2-Dichloroethene
ND
0.0463
0.0407
ND
0.183
0.161
Methyl ethyl ketone (2-Butanone)
0.506
0.0472
0.0407
1.49
0.139
0.120
Ethyl acetate
0.0497
0.0466
0.0407
0.179
0.168
0.147
Chloroform
ND
0.0468
0.0407
ND
0.228
0.199
Tetrahydrofuran
0.222
0.0464
0.0407
0.656
0.137
0.120
1,1,1-Trichloroethane
ND
0.0459
0.0407
ND
0.250
0.222
Cyclohexane
ND
0.0468
0.0407
ND
0.161
0.140
Carbon tetrachloride
0.0802
0.0466
0.0407
0.504
0.293
0.256
Benzene
0.101
0.0457
0.0407
0.323
0.146
0.130
2,2,4-trimethylpentane
ND
0.0471
0.0407
ND
0.220
0.190
1,2-Dichloroethane
ND
0.0469
0.0407
ND
0.190
0.165
Heptane
ND
0.0463
0.0407
ND
0.190
0.167
Trichloroethene
ND
0.0465
0.0407
ND
0.250
0.219
1,2-Dichloropropene
ND
0.0456
0.0407
ND
0.211
0.188
Methyl methacrylate
ND
0.0478
0.0407
ND
0.196
0.167
1,4-Dioxane
ND
0.0464
0.0407
ND
0.167
0.147
Bromodichloromethane
ND
0.0460
0.0407
ND
0.308
0.273
cis-1,3-Dichloropropene
ND
0.0454
0.0407
ND
0.206
0.185
Methyl isobutyl ketone
0.0955
0.0475
0.0407
0.391
0.195
0.167
Toluene
0.239
0.0469
0.0407
0.901
0.177
0.153
trans-1,3-Dichloropropene
ND
0.0470
0.0407
ND
0.214
0.185
1,1,2-Trichloroethane
ND
0.0465
0.0407
ND
0.254
0.222
Tetrachloroethene
ND
0.0465
0.0407
ND
0.316
0.276
2-Hexanone (Methyl butyl ketone)
0.106
0.119
0.0407
0.436
0.488
0.167 J
Dibromochloromethane
ND
0.0459
0.0407
ND
0.391
0.347
1,2-Dibromoethane
ND
0.0469
0.0407
ND
0.360
0.313
Chlorobenzene
ND
0.0477
0.0407
ND
0.220
0.187
Ethylbenzene
0.132
0.0456
0.0407
0.573
0.198
0.177
1,1,1,2-Tetrachloroethane
ND
0.0464
0.0407
ND
0.319
0.280
m-/p-Xylenes
0.431
0.0469
0.0407
1.87
0.204
0.177
EA# 0520-176 Page 4 of 37

Quantitation Report Enthalpy Analytical, LLC
Sample Name : IA-1
Sample Info
0520-176; *0.667=750mL load; Can *24090
Data File
X2001892.13
Dilution
0.667
Pressurization Factor
1.744
Acquisition Date
2020-05-27 14:02:30
Instrument Method
T015-SCN.M
Matrix
AIR
Concentration
RL
MDL
Concentration
RL
MDL
Target Compound
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
(PPBV)
(PPBV)
(PPBV)
(ug/m3)
(ug/m3)
(ug/m3) Flag
o-Xylene
0.176
0.0461
0.0407
0.762
0.200
0.177
Styrene
ND
0.0452
0.0407
ND
0.192
0.173
Bromoform
ND
0.0465
0.0407
ND
0.480
0.421
1,1,2,2-Tetrachloroethane
ND
0.0465
0.0407
ND
0.319
0.279
4-Ethyltoluene
0.0527
0.0468
0.0407
0.259
0.230
0.200 m
2-Chlorotoluene
ND
0.0467
0.0407
ND
0.242
0.211
1,3,5-Trimethylbenzene
0.0690
0.0467
0.0407
0.339
0.230
0.200
1,2,4-Trimethylbenzene
0.245
0.0462
0.0407
1.21
0.227
0.200 m
1,3-Dichlorobenzene
ND
0.0473
0.0407
ND
0.285
0.245
1,4-Dichlorobenzene
ND
0.0468
0.0407
ND
0.281
0.245
Benzyl chloride
ND
0.0463
0.0407
ND
0.240
0.211
1,2-Dichlorobenzene
ND
0.0472
0.0407
ND
0.284
0.245
1,2,4-Trichlorobenzene
0.0534
0.0471
0.0407
0.396
0.350
0.302
Hexachlorobutadiene
ND
0.0472
0.0407
ND
0.504
0.434
Naphthalene
0.0497
0.0485
0.0407
0.260
0.254
0.213
1-Bromopropane
ND
0.0454
0.0407
ND
0.228
0.205
1-Octene
ND
0.0451
0.0407
ND
0.207
0.187
n-Octane
0.0437
0.0466
0.0407
0.204
0.218
0.190 m 3
Isopropylbenzene
ND
0.0469
0.0407
ND
0.231
0.200
n-Propylbenzene
ND
0.0471
0.0407
ND
0.231
0.200
Retention Time Concentration
Internal Standards Response (min) (PPBV) Flag
------------------------------------------------------------------------------------------------------------------------------------------
Bromochloromethane (IS) 482,881 11.85 5.00 PASS
1,4-Dicuorobenzene (IS) 1,937,064 13.61 5.04 PASS
Chlorobenzene-d5 (IS) 1,680,663 17.80 4.80 PASS
(ND) = Not Detected
* (3) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration
IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40%
EA# 0520-176 Page 5 of 37

Quantitation Report
Enthalpy Analytical, LLC
Sample Name
Sample Info
Data File
Dilution
Pressurization Factor
Acquisition Date
Instrument Method
Matrix
: IA-2
0520-176; *0.667=750mL load; Can *1436
X2001893.D
0.667
1.717
2020-05-27 15:03:04
T015-SCN.M
AIR
Concentration
RL
MDL
Concentration
RL
MDL
Target Compound
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
(PPBV)
(PPBV)
(PPB1�
(ug/m3)
(ug/m3)
(ug/m3)
Flag*
Propylene
0.359
0.0439
0.0401
0.618
0.0755
0.0690
m
Freon 12 (CC12F2)
0.533
0.0440
0.0401
2.63
0.218
0.198
Freon 114 (C2Cl2F4)
ND
0.0456
0.0401
ND
0.319
0.280
Chloromethane
0.697
0.0445
0.0401
1.44
0.0919
0.0828
Chloroethene (Vinyl chloride)
ND
0.0457
0.0401
ND
0.117
0.102
1,3-Butadiene
ND
0.0443
0.0401
ND
0.0979
0.0887
Bromomethane
ND
0.0449
0.0401
ND
0.174
0.156
Chloroethane
ND
0.0459
0.0401
ND
0.121
0.106
Bromoethene (Vinyl bromide)
ND
0.0449
0.0401
ND
0.197
0.175
Freon 11(CC13F)
0.276
0.0473
0.0401
1.55
0.266
0.225
Ethanol
7.83
0.0458
0.0458
14.7
0.0863
0.0863
Acrolein
0.229
0.0444
0.0401
0.526
0.102
0.0919
m
Freon 113 (C2Cl3F3)
0.289
0.0454
0.0401
2.22
0.348
0.307
1,1-Dichloroethene
ND
0.0456
0.0401
ND
0.181
0.159
Acetone
4.57
0.0452
0.0401
10.8
0.107
0.0952
m
Carbon disulfide
0.0694
0.0455
0.0401
0.216
0.142
0.125
Isopropyl alcohol
0.717
0.0454
0.0401
1.76
0.111
0.0985
AIIyl chloride (3-chloropropene)
ND
0.0457
0.0401
ND
0.143
0.125
Acetonitrile
0.200
0.0452
0.0401
0.336
0.0759
0.0673
Methylene chloride
0.160
0.115
0.115
0.556
0.399
0.399
trans-1,2-Dichloroethene
ND
0.0463
0.0401
ND
0.183
0.159
Methyl tert-butyl ether
ND
0.0463
0.0401
ND
0.167
0.145
Acrylonitrile
ND
0.0459
0.0401
ND
0.0997
0.0870
Hexane
0.0639
0.0461
0.0401
0.225
0.163
0.141
1,1-Dichloroethane
ND
0.0447
0.0401
ND
0.181
0.162
Vinyl acetate
ND
0.0459
0.0401
ND
0.162
0.141
cis-1,2-Dichloroethene
ND
0.0455
0.0401
ND
0.181
0.159
Methyl ethyl ketone (2-Butanone)
0.484
0.0465
0.0401
1.43
0.137
0.118
Ethyl acetate
0.0560
0.0459
0.0401
0.202
0.165
0.144
Chloroform
ND
0.0460
0.0401
ND
0.225
0.196
Tetrahydrofuran
0.112
0.0457
0.0401
0.329
0.135
0.118
m
1,1,1-Trichloroethane
ND
0.0452
0.0401
ND
0.246
0.219
Cyclohexane
ND
0.0460
0.0401
ND
0.158
0.138
Carbon tetrachloride
0.0842
0.0459
0.0401
0.530
0.288
0.252
Benzene
0.0891
0.0450
0.0401
0.285
0.144
0.128
2,2,4-trimethylpentane
ND
0.0464
0.0401
ND
0.217
0.187
1,2-Dichloroethane
ND
0.0462
0.0401
ND
0.187
0.162
Heptane
0.0610
0.0455
0.0401
0.250
0.187
0.164
Trichloroethene
ND
0.0458
0.0401
ND
0.246
0.215
1,2-Dichloropropene
ND
0.0448
0.0401
ND
0.207
0.185
Methyl methacrylate
ND
0.0470
0.0401
ND
0.193
0.164
1,4-Dioxane
ND
0.0457
0.0401
ND
0.165
0.144
Bromodichloromethane
ND
0.0453
0.0401
ND
0.304
0.269
cis-1,3-Dichloropropene
ND
0.0447
0.0401
ND
0.203
0.182
Methyl isobutyl ketone
0.0677
0.0468
0.0401
0.277
0.192
0.164
Toluene
0.188
0.0461
0.0401
0.707
0.174
0.151
trans-1,3-Dichloropropene
ND
0.0463
0.0401
ND
0.210
0.182
1,1,2-Trichloroethane
ND
0.0458
0.0401
ND
0.250
0.219
Tetrachloroethene
ND
0.0458
0.0401
ND
0.311
0.272
2-Hexanone (Methyl butyl ketone)
0.0837
0.117
0.0401
0.343
0.480
0.164
J
Dibromochloromethane
ND
0.0452
0.0401
ND
0.385
0.341
1,2-Dibromoethane
ND
0.0462
0.0401
ND
0.355
0.308
Chlorobenzene
ND
0.0470
0.0401
ND
0.216
0.185
Ethylbenzene
0.0838
0.0448
0.0401
0.364
0.195
0.174
1,1,1,2-Tetrachloroethane
ND
0.0457
0.0401
ND
0.314
0.275
m-/p-Xylenes
0.264
0.0462
0.0401
1.15
0.201
0.174
EA# 0520-176 Page 6 of 37

Quantitation Report Enthalpy Analytical, LLC
Sample Name : IA-2
Sample Info
0520-176; *0.667=750mL load; Can #1436
Data File
X2001893.D
Dilution
0.667
Pressurization Factor
1.717
Acquisition Date
2020-05-27 15:03:04
Instrument Method
T015-SCN.M
Matrix
AIR
Concentration
RL
MDL
Concentration
RL
MDL
Target Compound
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
(PPBV)
(PPBV)
(PPBV)
(ug/m3)
(ug/m3)
(ug/m3) Flag
o-Xylene
0.112
0.0454
0.0401
0.487
0.197
0.174
Styrene
ND
0.0445
0.0401
ND
0.189
0.171
Bromoform
ND
0.0458
0.0401
ND
0.473
0.414
1,1,2,2-Tetrachloroethane
ND
0.0458
0.0401
ND
0.314
0.275
4-Ethyltoluene
ND
0.0460
0.0401
ND
0.226
0.197
2-Chlorotoluene
ND
0.0460
0.0401
ND
0.238
0.208
1,3,5-Trimethylbenzene
0.0447
0.0460
0.0401
0.220
0.226
0.197 J
1,2,4-Trimethylbenzene
0.145
0.0455
0.0401
0.714
0.224
0.197 m
1,3-Dichlorobenzene
ND
0.0466
0.0401
ND
0.280
0.241
1,4-Dichlorobenzene
ND
0.0460
0.0401
ND
0.277
0.241
Benzyl chloride
ND
0.0456
0.0401
ND
0.236
0.208
1,2-Dichlorobenzene
ND
0.0465
0.0401
ND
0.280
0.241
1,2,4-Trichlorobenzene
ND
0.0464
0.0401
ND
0.344
0.297
Hexachlorobutadiene
ND
0.0465
0.0401
ND
0.496
0.427
Naphthalene
ND
0.0478
0.0401
ND
0.250
0.210
1-Bromopropane
ND
0.0447
0.0401
ND
0.225
0.202
1-Octene
ND
0.0444
0.0401
ND
0.204
0.184
n-Octane
ND
0.0459
0.0401
ND
0.214
0.187
Isopropylbenzene
ND
0.0462
0.0401
ND
0.227
0.197
n-Propylbenzene
ND
0.0464
0.0401
ND
0.228
0.197
Retention Time Concentration
Internal Standards Response (min) (PPBV) Flag
------------------------------------------------------------------------------------------------------------------------------------------
Bromochloromethane (IS) 483,731 11.85 5.00 PASS
1,4-Dicuorobenzene (IS) 1,937,203 13.62 5.04 PASS
Chlorobenzene-d5 (IS) 1,686,716 17.80 4.80 PASS
(ND) = Not Detected
* (3) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration
IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40%
EA# 0520-176 Page 7 of 37

Quantitation Report
Enthalpy Analytical, LLC
Sample Name
Sample Info
Data File
Dilution
Pressurization Factor
Acquisition Date
Instrument Method
Matrix
: IA-3
0520-176; *0.667=750mL load; Can #000020
X2001894.D
0.667
1.728
2020-05-27 16:03:28
T015-SCN.M
AIR
Concentration
RL
MDL
Concentration
RL
MDL
Target Compound
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
(PPBV)
(PPBV)
(PPBV)
(ug/m3)
(ug/m3)
(ug/m3)
Flag*
Propylene
0.346
0.0442
0.0403
0.595
0.0760
0.0694
m
Freon 12 (CC12F2)
0.577
0.0443
0.0403
2.85
0.219
0.199
Freon 114 (C2Cl2F4)
ND
0.0459
0.0403
ND
0.321
0.282
Chloromethane
0.658
0.0448
0.0403
1.36
0.0925
0.0833
Chloroethene (Vinyl chloride)
ND
0.0460
0.0403
ND
0.117
0.103
1,3-Butadiene
ND
0.0445
0.0403
ND
0.0985
0.0892
Bromomethane
ND
0.0452
0.0403
ND
0.175
0.157
Chloroethane
ND
0.0462
0.0403
ND
0.122
0.106
Bromoethene (Vinyl bromide)
ND
0.0452
0.0403
ND
0.198
0.176
Freon 11(CC13F)
0.279
0.0476
0.0403
1.57
0.267
0.227
Ethanol
11.5
0.0461
0.0461
21.7
0.0869
0.0869
Acrolein
0.298
0.0447
0.0403
0.683
0.103
0.0925
Freon 113 (C2Cl3F3)
0.184
0.0457
0.0403
1.41
0.350
0.309
1,1-Dichloroethene
ND
0.0459
0.0403
ND
0.182
0.160
Acetone
4.48
0.0455
0.0403
10.6
0.108
0.0958
m
Carbon disulfide
0.0415
0.0458
0.0403
0.129
0.143
0.126
m I
Isopropyl alcohol
0.914
0.0456
0.0403
2.25
0.112
0.0992
AIIyl chloride (3-chloropropene)
ND
0.0460
0.0403
ND
0.144
0.126
Acetonitrile
0.169
0.0455
0.0403
0.283
0.0764
0.0677
Methylene chloride
0.159
0.115
0.115
0.553
0.401
0.401
trans-1,2-Dichloroethene
ND
0.0466
0.0403
ND
0.185
0.160
Methyl tert-butyl ether
ND
0.0466
0.0403
ND
0.168
0.145
Acrylonitrile
ND
0.0462
0.0403
ND
0.100
0.0875
Hexane
0.0665
0.0464
0.0403
0.234
0.164
0.142
1,1-Dichloroethane
ND
0.0450
0.0403
ND
0.182
0.163
Vinyl acetate
ND
0.0462
0.0403
ND
0.163
0.142
cis-1,2-Dichloroethene
ND
0.0458
0.0403
ND
0.182
0.160
Methyl ethyl ketone (2-Butanone)
0.480
0.0468
0.0403
1.41
0.138
0.119
Ethyl acetate
0.0848
0.0461
0.0403
0.305
0.166
0.145
Chloroform
ND
0.0463
0.0403
ND
0.226
0.197
Tetrahydrofuran
0.173
0.0460
0.0403
0.510
0.136
0.119
1,1,1-Trichloroethane
ND
0.0455
0.0403
ND
0.248
0.220
Cyclohexane
ND
0.0463
0.0403
ND
0.159
0.139
Carbon tetrachloride
0.0744
0.0461
0.0403
0.468
0.290
0.254
Benzene
0.0965
0.0453
0.0403
0.308
0.145
0.129
2,2,4-trimethylpentane
ND
0.0467
0.0403
ND
0.218
0.188
1,2-Dichloroethane
ND
0.0465
0.0403
ND
0.188
0.163
Heptane
0.0467
0.0458
0.0403
0.191
0.188
0.165
Trichloroethene
ND
0.0461
0.0403
ND
0.247
0.217
1,2-Dichloropropene
ND
0.0451
0.0403
ND
0.209
0.186
Methyl methacrylate
ND
0.0473
0.0403
ND
0.194
0.165
1,4-Dioxane
ND
0.0460
0.0403
ND
0.166
0.145
Bromodichloromethane
ND
0.0456
0.0403
ND
0.306
0.270
cis-1,3-Dichloropropene
ND
0.0450
0.0403
ND
0.204
0.183
Methyl isobutyl ketone
0.161
0.0471
0.0403
0.660
0.193
0.165
Toluene
0.217
0.0464
0.0403
0.818
0.175
0.152
trans-1,3-Dichloropropene
ND
0.0466
0.0403
ND
0.212
0.183
1,1,2-Trichloroethane
ND
0.0461
0.0403
ND
0.251
0.220
Tetrachloroethene
ND
0.0461
0.0403
ND
0.313
0.274
2-Hexanone (Methyl butyl ketone)
0.121
0.118
0.0403
0.496
0.483
0.165
m
Dibromochloromethane
ND
0.0455
0.0403
ND
0.388
0.344
1,2-Dibromoethane
ND
0.0465
0.0403
ND
0.357
0.310
Chlorobenzene
ND
0.0473
0.0403
ND
0.218
0.186
Ethylbenzene
0.106
0.0451
0.0403
0.459
0.196
0.175
1,1,1,2-Tetrachloroethane
ND
0.0460
0.0403
ND
0.316
0.277
m-/p-Xylenes
0.334
0.0465
0.0403
1.45
0.202
0.175
EA# 0520-176 Page 8 of 37

Quantitation Report Enthalpy Analytical, LLC
Sample Name : IA-3
Sample Info
0520-176; *0.667=750mL load; Can #000020
Data File
X2001894.D
Dilution
0.667
Pressurization Factor
1.728
Acquisition Date
2020-05-27 16:03:28
Instrument Method
T015-SCN.M
Matrix
AIR
Concentration
RL
MDL
Concentration
RL
MDL
Target Compound
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
(PPBV)
(PPBV)
(PPBV)
(ug/m3)
(ug/m3)
(ug/m3) Flag
o-Xylene
0.143
0.0456
0.0403
0.622
0.198
0.175
Styrene
ND
0.0448
0.0403
ND
0.191
0.172
Bromoform
ND
0.0461
0.0403
ND
0.476
0.417
1,1,2,2-Tetrachloroethane
ND
0.0461
0.0403
ND
0.316
0.277
4-Ethyltoluene
ND
0.0463
0.0403
ND
0.228
0.198
2-Chlorotoluene
ND
0.0463
0.0403
ND
0.240
0.209
1,3,5-Trimethylbenzene
0.0590
0.0463
0.0403
0.290
0.228
0.198
1,2,4-Trimethylbenzene
0.175
0.0458
0.0403
0.860
0.225
0.198 m
1,3-Dichlorobenzene
ND
0.0469
0.0403
ND
0.282
0.243
1,4-Dichlorobenzene
ND
0.0463
0.0403
ND
0.279
0.243
Benzyl chloride
ND
0.0459
0.0403
ND
0.238
0.209
1,2-Dichlorobenzene
ND
0.0468
0.0403
ND
0.281
0.243
1,2,4-Trichlorobenzene
ND
0.0467
0.0403
ND
0.346
0.299
Hexachlorobutadiene
ND
0.0468
0.0403
ND
0.499
0.430
Naphthalene
ND
0.0481
0.0403
ND
0.252
0.211
1-Bromopropane
ND
0.0450
0.0403
ND
0.226
0.203
1-Octene
ND
0.0447
0.0403
ND
0.205
0.185
n-Octane
ND
0.0462
0.0403
ND
0.216
0.188
Isopropylbenzene
ND
0.0465
0.0403
ND
0.229
0.198
n-Propylbenzene
ND
0.0467
0.0403
ND
0.229
0.198
Retention Time Concentration
Internal Standards Response (min) (PPBV) Flag
------------------------------------------------------------------------------------------------------------------------------------------
Bromochloromethane (IS) 496,823 11.86 5.00 PASS
1,4-Dicuorobenzene (IS) 1,972,169 13.62 5.04 PASS
Chlorobenzene-d5 (IS) 1,715,607 17.80 4.80 PASS
(ND) = Not Detected
* (3) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration
IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40%
EA# 0520-176 Page 9 of 37

Quantitation Report
Enthalpy Analytical, LLC
Sample Name
Sample Info
Data File
Dilution
Pressurization Factor
Acquisition Date
Instrument Method
Matrix
: IA-4
0520-176; *0.667=750mL load; Can *0724
X2001895.D
0.667
1.724
2020-05-27 17:04:03
TO15-SCN.M
AIR
Concentration
RL
MDL
Concentration
RL
MDL
Target Compound
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
(PPBV)
(PPBV)
(PPB1�
(ug/m3)
(ug/m3)
(ug/m3) Flag*
Propylene
0.312
0.0441
0.0402
0.536
0.0758
0.0693
Freon 12 (CC12F2)
0.537
0.0442
0.0402
2.65
0.219
0.199
Freon 114 (C2Cl2F4)
ND
0.0458
0.0402
ND
0.320
0.281
Chloromethane
0.694
0.0447
0.0402
1.43
0.0923
0.0831
Chloroethene (Vinyl chloride)
ND
0.0459
0.0402
ND
0.117
0.103
1,3-Butadiene
ND
0.0444
0.0402
ND
0.0983
0.0890
Bromomethane
ND
0.0451
0.0402
ND
0.175
0.156
Chloroethane
ND
0.0461
0.0402
ND
0.122
0.106
Bromoethene (Vinyl bromide)
ND
0.0451
0.0402
ND
0.197
0.176
Freon 11(CC13F)
0.276
0.0475
0.0402
1.55
0.267
0.226
Ethanol
9.29
0.0460
0.0460
17.5
0.0867
0.0867
Acrolein
0.228
0.0446
0.0402
0.523
0.102
0.0923
Freon 113 (C2Cl3F3)
0.256
0.0456
0.0402
1.96
0.349
0.308
1,1-Dichloroethene
ND
0.0458
0.0402
ND
0.181
0.160
Acetone
3.92
0.0454
0.0402
9.31
0.108
0.0956
Carbon disulfide
0.0501
0.0457
0.0402
0.156
0.142
0.125
Isopropyl alcohol
0.789
0.0455
0.0402
1.94
0.112
0.0989
AIIyl chloride (3-chloropropene)
ND
0.0459
0.0402
ND
0.144
0.126
Acetonitrile
0.158
0.0454
0.0402
0.266
0.0762
0.0676
Methylene chloride
0.177
0.115
0.115
0.613
0.400
0.400
trans-1,2-Dichloroethene
ND
0.0465
0.0402
ND
0.184
0.160
Methyl tert-butyl ether
ND
0.0465
0.0402
ND
0.167
0.145
Acrylonitrile
ND
0.0461
0.0402
ND
0.100
0.0873
Hexane
0.0611
0.0463
0.0402
0.215
0.163
0.142
1,1-Dichloroethane
ND
0.0448
0.0402
ND
0.182
0.163
Vinyl acetate
ND
0.0461
0.0402
ND
0.162
0.142
cis-1,2-Dichloroethene
ND
0.0457
0.0402
ND
0.181
0.160
Methyl ethyl ketone (2-Butanone)
0.447
0.0467
0.0402
1.32
0.138
0.119
Ethyl acetate
0.162
0.0460
0.0402
0.584
0.166
0.145
Chloroform
ND
0.0462
0.0402
ND
0.226
0.197
Tetrahydrofuran
0.142
0.0459
0.0402
0.420
0.135
0.119
1,1,1-Trichloroethane
ND
0.0454
0.0402
ND
0.247
0.220
Cyclohexane
ND
0.0462
0.0402
ND
0.159
0.139
Carbon tetrachloride
0.0788
0.0460
0.0402
0.496
0.290
0.253
Benzene
0.0782
0.0452
0.0402
0.250
0.144
0.129
2,2,4-trimethylpentane
ND
0.0466
0.0402
ND
0.218
0.188
1,2-Dichloroethane
ND
0.0464
0.0402
ND
0.188
0.163
Heptane
0.0645
0.0457
0.0402
0.264
0.187
0.165
Trichloroethene
ND
0.0460
0.0402
ND
0.247
0.216
1,2-Dichloropropene
ND
0.0450
0.0402
ND
0.208
0.186
Methyl methacrylate
ND
0.0472
0.0402
ND
0.193
0.165
1,4-Dioxane
ND
0.0459
0.0402
ND
0.165
0.145
Bromodichloromethane
ND
0.0455
0.0402
ND
0.305
0.270
cis-1,3-Dichloropropene
ND
0.0449
0.0402
ND
0.204
0.183
Methyl isobutyl ketone
0.0655
0.0470
0.0402
0.268
0.192
0.165
Toluene
0.215
0.0463
0.0402
0.812
0.175
0.152
trans-1,3-Dichloropropene
ND
0.0465
0.0402
ND
0.211
0.183
1,1,2-Trichloroethane
ND
0.0460
0.0402
ND
0.251
0.220
Tetrachloroethene
ND
0.0460
0.0402
ND
0.312
0.273
2-Hexanone (Methyl butyl ketone)
0.0753
0.118
0.0402
0.308
0.482
0.165 J
Dibromochloromethane
ND
0.0454
0.0402
ND
0.387
0.343
1,2-Dibromoethane
ND
0.0464
0.0402
ND
0.356
0.309
Chlorobenzene
ND
0.0472
0.0402
ND
0.217
0.185
Ethylbenzene
0.0913
0.0450
0.0402
0.396
0.196
0.175
1,1,1,2-Tetrachloroethane
ND
0.0459
0.0402
ND
0.315
0.276
m-/p-Xylenes
0.283
0.0464
0.0402
1.23
0.202
0.175
EA# 0520-176 Page 10 of 37

Quantitation Report Enthalpy Analytical, LLC
Sample Name : IA-4
Sample Info
0520-176; *0.667=750mL load; Can #0724
Data File
X2001895.D
Dilution
0.667
Pressurization Factor
1.724
Acquisition Date
2020-05-27 17:04:03
Instrument Method
TO15-SCN.M
Matrix
AIR
Concentration
RL
MDL
Concentration
RL
MDL
Target Compound
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
(PPBV)
(PPBV)
(PPBV)
(ug/m3)
(ug/m3)
(ug/m3) Flag
o-Xylene
0.125
0.0455
0.0402
0.543
0.198
0.175
Styrene
ND
0.0447
0.0402
ND
0.190
0.171
Bromoform
ND
0.0460
0.0402
ND
0.475
0.416
1,1,2,2-Tetrachloroethane
ND
0.0460
0.0402
ND
0.315
0.276
4-Ethyltoluene
ND
0.0462
0.0402
ND
0.227
0.198
2-Chlorotoluene
ND
0.0462
0.0402
ND
0.239
0.208
1,3,5-Trimethylbenzene
0.0501
0.0462
0.0402
0.246
0.227
0.198
1,2,4-Trimethylbenzene
0.152
0.0457
0.0402
0.747
0.225
0.198 m
1,3-Dichlorobenzene
ND
0.0468
0.0402
ND
0.281
0.242
1,4-Dichlorobenzene
ND
0.0462
0.0402
ND
0.278
0.242
Benzyl chloride
ND
0.0458
0.0402
ND
0.237
0.208
1,2-Dichlorobenzene
ND
0.0467
0.0402
ND
0.281
0.242
1,2,4-Trichlorobenzene
ND
0.0466
0.0402
ND
0.346
0.299
Hexachlorobutadiene
ND
0.0467
0.0402
ND
0.498
0.429
Naphthalene
ND
0.0480
0.0402
ND
0.251
0.211
1-Bromopropane
ND
0.0448
0.0402
ND
0.226
0.202
1-Octene
ND
0.0446
0.0402
ND
0.205
0.185
n-Octane
ND
0.0461
0.0402
ND
0.215
0.188
Isopropylbenzene
ND
0.0464
0.0402
ND
0.228
0.198
n-Propylbenzene
ND
0.0465
0.0402
ND
0.229
0.198
Retention Time Concentration
Internal Standards Response (min) (PPBV) Flag
------------------------------------------------------------------------------------------------------------------------------------------
Bromochloromethane (IS) 496,461 11.86 5.00 PASS
1,4-Dicuorobenzene (IS) 1,980,723 13.62 5.04 PASS
Chlorobenzene-d5 (IS) 1,714,027 17.80 4.80 PASS
(ND) = Not Detected
* (3) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration
IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40%
EA# 0520-176 Page 11 of 37

Quantitation Report
Enthalpy Analytical, LLC
Sample Name
Sample Info
Data File
Dilution
Pressurization Factor
Acquisition Date
Instrument Method
Matrix
: IA-5
0520-176; *0.667=750mL load; Can *1478
X2001896.D
0.667
1.732
2020-05-27 18:04:39
TO15-SCN.M
AIR
Concentration
RL
MDL
Concentration
RL
MDL
Target Compound
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
(PPBV)
(PPBV)
(PPB1�
(ug/m3)
(ug/m3)
(ug/m3)
Flag*
Propylene
0.346
0.0443
0.0404
0.595
0.0762
0.0696
Freon 12 (CC12F2)
0.542
0.0444
0.0404
2.68
0.220
0.200
Freon 114 (C2Cl2F4)
ND
0.0460
0.0404
ND
0.322
0.283
Chloromethane
0.715
0.0449
0.0404
1.48
0.0927
0.0835
Chloroethene (Vinyl chloride)
ND
0.0461
0.0404
ND
0.118
0.103
1,3-Butadiene
ND
0.0446
0.0404
ND
0.0988
0.0895
Bromomethane
ND
0.0453
0.0404
ND
0.176
0.157
Chloroethane
ND
0.0463
0.0404
ND
0.122
0.107
Bromoethene (Vinyl bromide)
ND
0.0453
0.0404
ND
0.198
0.177
Freon 11(CC13F)
0.277
0.0477
0.0404
1.56
0.268
0.227
Ethanol
10.0
0.0462
0.0462
18.9
0.0871
0.0871
Acrolein
0.276
0.0448
0.0404
0.633
0.103
0.0927
Freon 113 (C2Cl3F3)
0.206
0.0458
0.0404
1.58
0.351
0.310
1,1-Dichloroethene
ND
0.0460
0.0404
ND
0.182
0.160
Acetone
4.46
0.0456
0.0404
10.6
0.108
0.0960
Carbon disulfide
0.0513
0.0459
0.0404
0.160
0.143
0.126
Isopropyl alcohol
0.902
0.0457
0.0404
2.22
0.112
0.0994
AIIyl chloride (3-chloropropene)
ND
0.0461
0.0404
ND
0.144
0.127
Acetonitrile
0.234
0.0456
0.0404
0.393
0.0766
0.0679
m
Methylene chloride
0.185
0.116
0.116
0.644
0.402
0.402
trans-1,2-Dichloroethene
ND
0.0467
0.0404
ND
0.185
0.160
Methyl tert-butyl ether
ND
0.0467
0.0404
ND
0.168
0.146
Acrylonitrile
ND
0.0463
0.0404
ND
0.101
0.0878
Hexane
0.0691
0.0465
0.0404
0.244
0.164
0.143
1,1-Dichloroethane
ND
0.0451
0.0404
ND
0.182
0.164
Vinyl acetate
ND
0.0463
0.0404
ND
0.163
0.142
cis-1,2-Dichloroethene
ND
0.0459
0.0404
ND
0.182
0.160
Methyl ethyl ketone (2-Butanone)
0.551
0.0469
0.0404
1.63
0.138
0.119
m
Ethyl acetate
0.700
0.0463
0.0404
2.52
0.167
0.146
Chloroform
ND
0.0464
0.0404
ND
0.227
0.197
Tetrahydrofuran
0.144
0.0461
0.0404
0.426
0.136
0.119
1,1,1-Trichloroethane
ND
0.0456
0.0404
ND
0.249
0.221
Cyclohexane
ND
0.0464
0.0404
ND
0.160
0.139
Carbon tetrachloride
0.0878
0.0463
0.0404
0.552
0.291
0.254
Benzene
0.0965
0.0454
0.0404
0.308
0.145
0.129
2,2,4-trimethylpentane
ND
0.0468
0.0404
ND
0.219
0.189
1,2-Dichloroethane
ND
0.0466
0.0404
ND
0.189
0.164
Heptane
0.0613
0.0459
0.0404
0.251
0.188
0.166
Trichloroethene
ND
0.0462
0.0404
ND
0.248
0.217
1,2-Dichloropropene
ND
0.0452
0.0404
ND
0.209
0.187
Methyl methacrylate
ND
0.0475
0.0404
ND
0.194
0.166
1,4-Dioxane
ND
0.0461
0.0404
ND
0.166
0.146
Bromodichloromethane
ND
0.0457
0.0404
ND
0.306
0.271
cis-1,3-Dichloropropene
ND
0.0451
0.0404
ND
0.205
0.184
Methyl isobutyl ketone
0.135
0.0472
0.0404
0.552
0.193
0.166
m
Toluene
0.224
0.0465
0.0404
0.845
0.175
0.152
trans-1,3-Dichloropropene
ND
0.0467
0.0404
ND
0.212
0.184
1,1,2-Trichloroethane
ND
0.0462
0.0404
ND
0.252
0.221
Tetrachloroethene
ND
0.0462
0.0404
ND
0.313
0.274
2-Hexanone (Methyl butyl ketone)
0.111
0.118
0.0404
0.455
0.485
0.166
J
Dibromochloromethane
ND
0.0456
0.0404
ND
0.389
0.344
1,2-Dibromoethane
ND
0.0466
0.0404
ND
0.358
0.311
Chlorobenzene
ND
0.0474
0.0404
ND
0.218
0.186
Ethylbenzene
0.0942
0.0452
0.0404
0.409
0.196
0.176
1,1,1,2-Tetrachloroethane
ND
0.0461
0.0404
ND
0.317
0.278
m-/p-Xylenes
0.303
0.0466
0.0404
1.31
0.202
0.176
EA# 0520-176 Page 12 of 37

Quantitation Report Enthalpy Analytical, LLC
Sample Name : IA-5
Sample Info
0520-176; *0.667=750mL load; Can #1478
Data File
X2001896.D
Dilution
0.667
Pressurization Factor
1.732
Acquisition Date
2020-05-27 18:04:39
Instrument Method
TO15-SCN.M
Matrix
AIR
Concentration
RL
MDL
Concentration
RL
MDL
Target Compound
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
(PPBV)
(PPBV)
(PPBV)
(ug/m3)
(ug/m3)
(ug/m3) Flag
o-Xylene
0.122
0.0457
0.0404
0.528
0.199
0.176
Styrene
ND
0.0449
0.0404
ND
0.191
0.172
Bromoform
ND
0.0462
0.0404
ND
0.477
0.418
1,1,2,2-Tetrachloroethane
ND
0.0462
0.0404
ND
0.317
0.278
4-Ethyltoluene
ND
0.0464
0.0404
ND
0.228
0.199
2-Chlorotoluene
ND
0.0464
0.0404
ND
0.240
0.209
1,3,5-Trimethylbenzene
0.0505
0.0464
0.0404
0.248
0.228
0.199
1,2,4-Trimethylbenzene
0.154
0.0459
0.0404
0.759
0.226
0.199 m
1,3-Dichlorobenzene
ND
0.0470
0.0404
ND
0.283
0.243
1,4-Dichlorobenzene
ND
0.0464
0.0404
ND
0.279
0.243
Benzyl chloride
ND
0.0460
0.0404
ND
0.238
0.209
1,2-Dichlorobenzene
ND
0.0469
0.0404
ND
0.282
0.243
1,2,4-Trichlorobenzene
ND
0.0468
0.0404
ND
0.347
0.300
Hexachlorobutadiene
ND
0.0469
0.0404
ND
0.500
0.431
Naphthalene
ND
0.0482
0.0404
ND
0.253
0.212
1-Bromopropane
ND
0.0451
0.0404
ND
0.227
0.203
1-Octene
ND
0.0448
0.0404
ND
0.206
0.186
n-Octane
ND
0.0463
0.0404
ND
0.216
0.189
Isopropylbenzene
ND
0.0466
0.0404
ND
0.229
0.199
n-Propylbenzene
ND
0.0468
0.0404
ND
0.230
0.199
Retention Time Concentration
Internal Standards Response (min) (PPBV) Flag
------------------------------------------------------------------------------------------------------------------------------------------
Bromochloromethane (IS) 501,668 11.85 5.00 PASS
1,4-Dicuorobenzene (IS) 2,016,004 13.61 5.04 PASS
Chlorobenzene-d5 (IS) 1,735,218 17.80 4.80 PASS
(ND) = Not Detected
* (3) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration
IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40%
EA# 0520-176 Page 13 of 37

Quantitation Report
Enthalpy Analytical, LLC
Sample Name
Sample Info
Data File
Dilution
Pressurization Factor
Acquisition Date
Instrument Method
Matrix
: IA-6
0520-176; *0.667=750mL load; Can *0719
X2001898.D
0.667
1.748
2020-05-27 20:05:26
T015-SCN.M
AIR
Concentration
RL
MDL
Concentration
RL
MDL
Target Compound
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
(PPBV)
(PPBV)
(PPB1�
(ug/m3)
(ug/m3)
(ug/m3) Flag*
Propylene
0.430
0.0447
0.0408
0.739
0.0769
0.0702 m
Freon 12 (CC12F2)
0.704
0.0448
0.0408
3.48
0.222
0.202
Freon 114 (C2C12F4)
ND
0.0465
0.0408
ND
0.325
0.285
Chloromethane
0.674
0.0453
0.0408
1.39
0.0936
0.0843
Chloroethene (Vinyl chloride)
ND
0.0465
0.0408
ND
0.119
0.104
1,3-Butadiene
ND
0.0451
0.0408
ND
0.0997
0.0903
Bromomethane
ND
0.0457
0.0408
ND
0.177
0.158
Chloroethane
ND
0.0467
0.0408
ND
0.123
0.108
Bromoethene (Vinyl bromide)
ND
0.0458
0.0408
ND
0.200
0.178
Freon 11 (CC13F)
0.341
0.0481
0.0408
1.92
0.270
0.229
Ethanol
5.06
0.0466
0.0466
9.53
0.0879
0.0879
Acrolein
0.350
0.0452
0.0408
0.802
0.104
0.0936
Freon 113 (C2C13F3)
0.134
0.0462
0.0408
1.03
0.354
0.313
1,1-Dichloroethene
ND
0.0464
0.0408
ND
0.184
0.162
Acetone
8.71
0.0461
0.0408
20.7
0.109
0.0969
Carbon disulfide
0.0803
0.0463
0.0408
0.250
0.144
0.127
Isopropyl alcohol
1.96
0.0462
0.0408
4.81
0.113
0.100
AIIyl chloride (3-chloropropene)
ND
0.0465
0.0408
ND
0.146
0.128
Acetonitrile
0.212
0.0460
0.0408
0.356
0.0773
0.0685
Methylene chloride
0.148
0.117
0.117
0.516
0.406
0.406
trans-1,2-Dichloroethene
ND
0.0471
0.0408
ND
0.187
0.162
Methyl tert-butyl ether
ND
0.0471
0.0408
ND
0.170
0.147
Acrylonitrile
ND
0.0468
0.0408
ND
0.102
0.0886
Hexane
0.0725
0.0470
0.0408
0.255
0.166
0.144
1,1-Dichloroethane
ND
0.0455
0.0408
ND
0.184
0.165
Vinyl acetate
ND
0.0468
0.0408
ND
0.165
0.144
cis-1,2-Dichloroethene
ND
0.0464
0.0408
ND
0.184
0.162
Methyl ethyl ketone (2-Butanone)
0.931
0.0473
0.0408
2.74
0.140
0.120
Ethyl acetate
ND
0.0467
0.0408
ND
0.168
0.147
Chloroform
ND
0.0469
0.0408
ND
0.229
0.199
Tetrahydrofuran
0.278
0.0465
0.0408
0.819
0.137
0.120
1,1,1-Trichloroethane
ND
0.0460
0.0408
ND
0.251
0.223
Cyclohexane
ND
0.0469
0.0408
ND
0.161
0.140
Carbon tetrachloride
0.0788
0.0467
0.0408
0.496
0.294
0.257
Benzene
0.210
0.0458
0.0408
0.671
0.146
0.130
2,2,4-trimethylpentane
ND
0.0472
0.0408
ND
0.221
0.191
1,2-Dichloroethane
ND
0.0471
0.0408
ND
0.190
0.165
Heptane
0.0813
0.0464
0.0408
0.333
0.190
0.167
Trichloroethene
ND
0.0466
0.0408
ND
0.250
0.219
1,2-Dichloropropene
ND
0.0457
0.0408
ND
0.211
0.189
Methyl methacrylate
ND
0.0479
0.0408
ND
0.196
0.167
1,4-Dioxane
0.131
0.0465
0.0408
0.472
0.168
0.147
Bromodichloromethane
ND
0.0461
0.0408
ND
0.309
0.273
cis-1,3-Dichloropropene
ND
0.0455
0.0408
ND
0.207
0.185
Methyl isobutyl ketone
0.269
0.0476
0.0408
1.10
0.195
0.167
Toluene
0.243
0.0470
0.0408
0.914
0.177
0.154
trans-1,3-Dichloropropene
ND
0.0471
0.0408
ND
0.214
0.185
1,1,2-Trichloroethane
ND
0.0466
0.0408
ND
0.254
0.223
Tetrachloroethene
ND
0.0466
0.0408
ND
0.316
0.277
2-Hexanone (Methyl butyl ketone)
0.422
0.119
0.0408
1.73
0.489
0.167 m
Dibromochloromethane
ND
0.0460
0.0408
ND
0.392
0.348
1,2-Dibromoethane
ND
0.0470
0.0408
ND
0.361
0.314
Chlorobenzene
ND
0.0478
0.0408
ND
0.220
0.188
Ethylbenzene
0.242
0.0457
0.0408
1.05
0.198
0.177
1,1,1,2-Tetrachloroethane
ND
0.0465
0.0408
ND
0.320
0.280
m-/p-Xylenes
0.715
0.0471
0.0408
3.10
0.204
0.177
EA# 0520-176 Page 14 of 37

Quantitation Report Enthalpy Analytical, LLC
Sample Name : IA-6
Sample Info
0520-176; *0.667=750mL load; Can *0719
Data File
X2001898.13
Dilution
0.667
Pressurization Factor
1.748
Acquisition Date
2020-05-27 20:05:26
Instrument Method
T015-SCN.M
Matrix
AIR
Concentration
RL
MDL
Concentration
RL
MDL
Target Compound
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
(PPBV)
(PPBV)
(PPBV)
(ug/m3)
(ug/m3)
(ug/m3) Flag
o-Xylene
0.258
0.0462
0.0408
1.12
0.200
0.177
Styrene
0.112
0.0453
0.0408
0.479
0.193
0.174
Bromoform
ND
0.0466
0.0408
ND
0.482
0.422
1,1,2,2-Tetrachloroethane
ND
0.0466
0.0408
ND
0.320
0.280
4-Ethyltoluene
0.0456
0.0469
0.0408
0.224
0.230
0.201 3
2-Chlorotoluene
ND
0.0468
0.0408
ND
0.242
0.211
1,3,5-Trimethylbenzene
0.0664
0.0468
0.0408
0.326
0.230
0.201
1,2,4-Trimethylbenzene
0.218
0.0463
0.0408
1.07
0.228
0.201
1,3-Dichlorobenzene
ND
0.0474
0.0408
ND
0.285
0.245
1,4-Dichlorobenzene
ND
0.0469
0.0408
ND
0.282
0.245
Benzyl chloride
ND
0.0465
0.0408
ND
0.240
0.211
1,2-Dichlorobenzene
ND
0.0473
0.0408
ND
0.285
0.245
1,2,4-Trichlorobenzene
ND
0.0472
0.0408
ND
0.350
0.303
Hexachlorobutadiene
ND
0.0473
0.0408
ND
0.505
0.435
Naphthalene
0.101
0.0486
0.0408
0.528
0.255
0.214
1-Bromopropane
ND
0.0455
0.0408
ND
0.229
0.205
1-Octene
ND
0.0452
0.0408
ND
0.208
0.187
n-Octane
0.0530
0.0467
0.0408
0.248
0.218
0.191 m
Isopropylbenzene
0.0458
0.0471
0.0408
0.225
0.231
0.201 3
n-Propylbenzene
ND
0.0472
0.0408
ND
0.232
0.201
Retention Time Concentration
Internal Standards Response (min) (PPBV) Flag
------------------------------------------------------------------------------------------------------------------------------------------
Bromochloromethane (IS) 532,046 11.85 5.00 PASS
1,4-Dicuorobenzene (IS) 2,109,884 13.61 5.04 PASS
Chlorobenzene-d5 (IS) 1,845,806 17.80 4.80 PASS
(ND) = Not Detected
* (3) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration
IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40%
EA# 0520-176 Page 15 of 37

Quantitation Report
Enthalpy Analytical, LLC
Sample Name
Sample Info
Data File
Dilution
Pressurization Factor
Acquisition Date
Instrument Method
Matrix
: OA-1
0520-176; *0.667=750mL load; Can *0723
X2001899.D
0.667
1.774
2020-05-27 21:05:58
T015-SCN.M
AIR
Concentration
RL
MDL
Concentration
RL
MDL
Target Compound
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
(PPBV)
(PPBV)
(PPBV)
(ug/m3)
(ug/m3)
(ug/m3)
Flag*
Propylene
0.186
0.0453
0.0414
0.321
0.0780
0.0713
m
Freon 12 (CC12F2)
0.468
0.0455
0.0414
2.31
0.225
0.205
Freon 114 (C2C12F4)
ND
0.0471
0.0414
ND
0.330
0.290
Chloromethane
0.665
0.0460
0.0414
1.37
0.0950
0.0855
Chloroethene (Vinyl chloride)
ND
0.0472
0.0414
ND
0.121
0.106
1,3-Butadiene
ND
0.0457
0.0414
ND
0.101
0.0916
Bromomethane
ND
0.0464
0.0414
ND
0.180
0.161
Chloroethane
ND
0.0474
0.0414
ND
0.125
0.109
Bromoethene (Vinyl bromide)
ND
0.0464
0.0414
ND
0.203
0.181
Freon 11(CC13F)
0.238
0.0488
0.0414
1.34
0.274
0.233
Ethanol
0.885
0.0473
0.0473
1.67
0.0892
0.0892
Acrolein
0.0680
0.0459
0.0414
0.156
0.105
0.0950
m
Freon 113 (C2Cl3F3)
0.0712
0.0469
0.0414
0.545
0.359
0.317
1,1-Dichloroethene
ND
0.0471
0.0414
ND
0.187
0.164
Acetone
1.84
0.0467
0.0414
4.38
0.111
0.0984
m
Carbon disulfide
ND
0.0470
0.0414
ND
0.146
0.129
Isopropyl alcohol
0.183
0.0469
0.0414
0.451
0.115
0.102
AIIyl chloride (3-chloropropene)
ND
0.0472
0.0414
ND
0.148
0.130
Acetonitrile
0.184
0.0467
0.0414
0.309
0.0784
0.0695
Methylene chloride
0.168
0.119
0.119
0.582
0.412
0.412
m
trans-1,2-Dichloroethene
ND
0.0478
0.0414
ND
0.190
0.164
Methyl tert-butyl ether
ND
0.0478
0.0414
ND
0.172
0.149
Acrylonitrile
ND
0.0475
0.0414
ND
0.103
0.0899
Hexane
ND
0.0477
0.0414
ND
0.168
0.146
1,1-Dichloroethane
ND
0.0461
0.0414
ND
0.187
0.168
Vinyl acetate
ND
0.0475
0.0414
ND
0.167
0.146
cis-1,2-Dichloroethene
ND
0.0470
0.0414
ND
0.187
0.164
Methyl ethyl ketone (2-Butanone)
0.148
0.0480
0.0414
0.435
0.142
0.122
Ethyl acetate
0.0855
0.0474
0.0414
0.308
0.171
0.149
m
Chloroform
ND
0.0476
0.0414
ND
0.232
0.202
Tetrahydrofuran
ND
0.0472
0.0414
ND
0.139
0.122
1,1,1-Trichloroethane
ND
0.0467
0.0414
ND
0.255
0.226
Cyclohexane
ND
0.0476
0.0414
ND
0.164
0.143
Carbon tetrachloride
0.0798
0.0474
0.0414
0.502
0.298
0.261
Benzene
0.0504
0.0465
0.0414
0.161
0.149
0.132
2,2,4-trimethylpentane
ND
0.0479
0.0414
ND
0.224
0.193
1,2-Dichloroethane
ND
0.0478
0.0414
ND
0.193
0.168
Heptane
ND
0.0470
0.0414
ND
0.193
0.170
Trichloroethene
ND
0.0473
0.0414
ND
0.254
0.223
1,2-Dichloropropene
ND
0.0463
0.0414
ND
0.214
0.191
Methyl methacrylate
ND
0.0486
0.0414
ND
0.199
0.170
1,4-Dioxane
ND
0.0472
0.0414
ND
0.170
0.149
Bromodichloromethane
ND
0.0468
0.0414
ND
0.314
0.277
cis-1,3-Dichloropropene
ND
0.0462
0.0414
ND
0.210
0.188
Methyl isobutyl ketone
ND
0.0483
0.0414
ND
0.198
0.170
Toluene
0.0834
0.0477
0.0414
0.314
0.180
0.156
trans-1,3-Dichloropropene
ND
0.0479
0.0414
ND
0.217
0.188
1,1,2-Trichloroethane
ND
0.0473
0.0414
ND
0.258
0.226
Tetrachloroethene
ND
0.0473
0.0414
ND
0.321
0.281
2-Hexanone (Methyl butyl ketone)
ND
0.121
0.0414
ND
0.496
0.170
Dibromochloromethane
ND
0.0467
0.0414
ND
0.398
0.353
1,2-Dibromoethane
ND
0.0477
0.0414
ND
0.367
0.318
Chlorobenzene
ND
0.0486
0.0414
ND
0.224
0.191
Ethylbenzene
ND
0.0463
0.0414
ND
0.201
0.180
1,1,1,2-Tetrachloroethane
ND
0.0472
0.0414
ND
0.324
0.284
m-/p-Xylenes
0.0456
0.0478
0.0414
0.198
0.207
0.180
3
EA# 0520-176 Page 16 of 37

Quantitation Report
Enthalpy Analytical, LLC
Sample Name
Sample Info
Data File
Dilution
Pressurization Factor
Acquisition Date
Instrument Method
Matrix
: OA-1
0520-176; *0.667=750mL load; Can #0723
X2001899.D
0.667
1.774
2020-05-27 21:05:58
TO15-SCN.M
AIR
Concentration
RL
MDL
Concentration
RL
MDL
Target Compound
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
(PPBV)
(PPBV)
(PPBV)
(ug/m3)
(ug/m3)
(ug/m3) Flag
o-Xylene
ND
0.0469
0.0414
ND
0.203
0.180
Styrene
ND
0.0460
0.0414
ND
0.196
0.176
Bromoform
ND
0.0473
0.0414
ND
0.489
0.428
1,1,2,2-Tetrachloroethane
ND
0.0473
0.0414
ND
0.325
0.284
4-Ethyltoluene
ND
0.0476
0.0414
ND
0.234
0.204
2-Chlorotoluene
ND
0.0475
0.0414
ND
0.246
0.214
1,3,5-Trimethylbenzene
ND
0.0475
0.0414
ND
0.234
0.204
1,2,4-Trimethylbenzene
ND
0.0470
0.0414
ND
0.231
0.204
1,3-Dichlorobenzene
ND
0.0481
0.0414
ND
0.289
0.249
1,4-Dichlorobenzene
ND
0.0476
0.0414
ND
0.286
0.249
Benzyl chloride
ND
0.0471
0.0414
ND
0.244
0.214
1,2-Dichlorobenzene
ND
0.0480
0.0414
ND
0.289
0.249
1,2,4-Trichlorobenzene
ND
0.0479
0.0414
ND
0.356
0.307
Hexachlorobutadiene
ND
0.0480
0.0414
ND
0.512
0.442
Naphthalene
ND
0.0493
0.0414
ND
0.259
0.217
1-Bromopropane
ND
0.0461
0.0414
ND
0.232
0.208
1-Octene
ND
0.0459
0.0414
ND
0.211
0.190
n-Octane
ND
0.0474
0.0414
ND
0.222
0.193
Isopropyl benzene
ND
0.0478
0.0414
ND
0.235
0.204
n-Propylbenzene
ND
0.0479
0.0414
ND
0.235
0.204
Retention Time
Concentration
Internal Standards
------------------------------------------------------------------------------------------------------------------------------------------
Response
(min)
(PPBV)
Flag
Bromochloromethane (IS)
559,321
11.85
5.00
PASS
1,4-Difuorobenzene (IS)
2,199,283
13.62
5.04
PASS
Chlorobenzene-d5 (IS)
1,918,812
17.80
4.80
PASS
(ND) = Not Detected
* (3) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration
IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40%
EA# 0520-176 Page 17 of 37

Quantitation Report
Enthalpy Analytical, LLC
Sample Name
Sample Info
Data File
Dilution
Pressurization Factor
Acquisition Date
Instrument Method
Matrix
: DUP-1
0520-176; *0.667=750mL load; Can *0744
X2001900.D
0.667
1.766
2020-05-27 22:06:38
T015-SCN.M
AIR
Concentration
RL
MDL
Concentration
RL
MDL
Target Compound
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
(PPBV)
(PPBV)
(PPB1�
(ug/m3)
(ug/m3)
(ug/m3) Flag*
Propylene
0.346
0.0451
0.0412
0.596
0.0777
0.0710
Freon 12 (CC12F2)
0.557
0.0453
0.0412
2.76
0.224
0.204
Freon 114 (C2C12F4)
ND
0.0469
0.0412
ND
0.328
0.288
Chloromethane
0.658
0.0458
0.0412
1.36
0.0946
0.0851
Chloroethene (Vinyl chloride)
ND
0.0470
0.0412
ND
0.120
0.105
1,3-Butadiene
ND
0.0455
0.0412
ND
0.101
0.0912
Bromomethane
ND
0.0462
0.0412
ND
0.179
0.160
Chloroethane
ND
0.0472
0.0412
ND
0.125
0.109
Bromoethene (Vinyl bromide)
ND
0.0462
0.0412
ND
0.202
0.180
Freon 11(CC13F)
0.277
0.0486
0.0412
1.56
0.273
0.232
Ethanol
11.8
0.0471
0.0471
22.2
0.0888
0.0888
Acrolein
0.326
0.0457
0.0412
0.748
0.105
0.0945
Freon 113 (C2Cl3F3)
0.190
0.0467
0.0412
1.46
0.358
0.316
1,1-Dichloroethene
ND
0.0469
0.0412
ND
0.186
0.163
Acetone
4.75
0.0465
0.0412
11.3
0.111
0.0979
Carbon disulfide
0.0415
0.0468
0.0412
0.129
0.146
0.128 3
Isopropyl alcohol
1.18
0.0466
0.0412
2.89
0.115
0.101
AIIyl chloride (3-chloropropene)
ND
0.0470
0.0412
ND
0.147
0.129
Acetonitrile
0.247
0.0465
0.0412
0.415
0.0781
0.0692
Methylene chloride
0.207
0.118
0.118
0.720
0.410
0.410
trans-1,2-Dichloroethene
ND
0.0476
0.0412
ND
0.189
0.163
Methyl tert-butyl ether
ND
0.0476
0.0412
ND
0.172
0.149
Acrylonitrile
ND
0.0473
0.0412
ND
0.103
0.0895
Hexane
0.0833
0.0474
0.0412
0.293
0.167
0.145
1,1-Dichloroethane
ND
0.0459
0.0412
ND
0.186
0.167
Vinyl acetate
ND
0.0473
0.0412
ND
0.166
0.145
cis-1,2-Dichloroethene
ND
0.0468
0.0412
ND
0.186
0.163
Methyl ethyl ketone (2-Butanone)
0.541
0.0478
0.0412
1.59
0.141
0.122
Ethyl acetate
0.270
0.0472
0.0412
0.972
0.170
0.149
Chloroform
ND
0.0474
0.0412
ND
0.231
0.201
Tetrahydrofuran
0.193
0.0470
0.0412
0.570
0.139
0.122
1,1,1-Trichloroethane
ND
0.0465
0.0412
ND
0.253
0.225
Cyclohexane
ND
0.0474
0.0412
ND
0.163
0.142
Carbon tetrachloride
0.0791
0.0472
0.0412
0.497
0.297
0.259
Benzene
0.0966
0.0463
0.0412
0.309
0.148
0.132
2,2,4-trimethylpentane
ND
0.0477
0.0412
ND
0.223
0.193
1,2-Dichloroethane
ND
0.0475
0.0412
ND
0.192
0.167
Heptane
0.0645
0.0468
0.0412
0.264
0.192
0.169
Trichloroethene
ND
0.0471
0.0412
ND
0.253
0.222
1,2-Dichloropropene
ND
0.0461
0.0412
ND
0.213
0.191
Methyl methacrylate
ND
0.0484
0.0412
ND
0.198
0.169
1,4-Dioxane
ND
0.0470
0.0412
ND
0.169
0.149
Bromodichloromethane
ND
0.0466
0.0412
ND
0.312
0.276
cis-1,3-Dichloropropene
ND
0.0460
0.0412
ND
0.209
0.187
Methyl isobutyl ketone
0.166
0.0481
0.0412
0.680
0.197
0.169
Toluene
0.255
0.0474
0.0412
0.960
0.179
0.155
trans-1,3-Dichloropropene
ND
0.0476
0.0412
ND
0.216
0.187
1,1,2-Trichloroethane
ND
0.0471
0.0412
ND
0.257
0.225
Tetrachloroethene
ND
0.0471
0.0412
ND
0.320
0.280
2-Hexanone (Methyl butyl ketone)
0.110
0.121
0.0412
0.450
0.494
0.169 3
Dibromochloromethane
ND
0.0465
0.0412
ND
0.396
0.351
1,2-Dibromoethane
ND
0.0475
0.0412
ND
0.365
0.317
Chlorobenzene
ND
0.0483
0.0412
ND
0.223
0.190
Ethylbenzene
0.108
0.0461
0.0412
0.468
0.200
0.179
1,1,1,2-Tetrachloroethane
ND
0.0470
0.0412
ND
0.323
0.283
m-/p-Xylenes
0.349
0.0475
0.0412
1.52
0.206
0.179
EA# 0520-176 Page 18 of 37

Quantitation Report Enthalpy Analytical, LLC
Sample Name : DUP-1
Sample Info
0520-176; *0.667=750mL load; Can #0744
Data File
X2001900.D
Dilution
0.667
Pressurization Factor
1.766
Acquisition Date
2020-05-27 22:06:38
Instrument Method
TO15-SCN.M
Matrix
AIR
Concentration
RL
MDL
Concentration
RL
MDL
Target Compound
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
(PPBV)
(PPBV)
(PPBV)
(ug/m3)
(ug/m3)
(ug/m3) Flag
o-Xylene
0.142
0.0466
0.0412
0.615
0.203
0.179
Styrene
0.0579
0.0458
0.0412
0.247
0.195
0.176
Bromoform
ND
0.0471
0.0412
ND
0.487
0.426
1,1,2,2-Tetrachloroethane
ND
0.0471
0.0412
ND
0.323
0.283
4-Ethyltoluene
ND
0.0474
0.0412
ND
0.233
0.203
2-Chlorotoluene
ND
0.0473
0.0412
ND
0.245
0.213
1,3,5-Trimethylbenzene
0.0613
0.0473
0.0412
0.302
0.233
0.203
1,2,4-Trimethylbenzene
0.169
0.0468
0.0412
0.833
0.230
0.203 m
1,3-Dichlorobenzene
ND
0.0479
0.0412
ND
0.288
0.248
1,4-Dichlorobenzene
ND
0.0474
0.0412
ND
0.285
0.248
Benzyl chloride
ND
0.0469
0.0412
ND
0.243
0.213
1,2-Dichlorobenzene
ND
0.0478
0.0412
ND
0.288
0.248
1,2,4-Trichlorobenzene
ND
0.0477
0.0412
ND
0.354
0.306
Hexachlorobutadiene
ND
0.0478
0.0412
ND
0.510
0.440
Naphthalene
ND
0.0491
0.0412
ND
0.257
0.216
1-Bromopropane
ND
0.0459
0.0412
ND
0.231
0.207
1-Octene
ND
0.0457
0.0412
ND
0.210
0.189
n-Octane
ND
0.0472
0.0412
ND
0.221
0.193
Isopropylbenzene
ND
0.0475
0.0412
ND
0.234
0.203
n-Propylbenzene
ND
0.0477
0.0412
ND
0.234
0.203
Retention Time Concentration
Internal Standards Response (min) (PPBV) Flag
------------------------------------------------------------------------------------------------------------------------------------------
Bromochloromethane (IS) 534,984 11.85 5.00 PASS
1,4-Dicuorobenzene (IS) 2,140,035 13.62 5.04 PASS
Chlorobenzene-d5 (IS) 1,853,073 17.80 4.80 PASS
(ND) = Not Detected
* (3) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration
IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40%
EA# 0520-176 Page 19 of 37

�)
ENTHALPY
A A A LY i I C A t.
Lab QC
EA# 0520-176 Page 20 of 37

Quantitation Report Enthalpy Analytical, LLC
Sample Name : IA-5 LD
Sample Info
0520-176; *0.667=750mL load; Can #1478
Data File
X2001897.D
Dilution
0.667
Pressurization Factor
1.732
Acquisition Date
2020-05-27 19:05:02
Instrument Method
TO15-SCN.M
Matrix
AIR
Concentration
RL
MDL
Concentration
RL
MDL
Target Compound
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------•
(PPBV)
(PPBV)
(PPBV)
(ug/m3)
(ug/m3)
(ug/m3)
% Diff Flag
Propylene
0.317
0.0443
0.0404
0.546
0.0762
0.0696
8.6
Freon 12 (CC12F2)
0.518
0.0444
0.0404
2.56
0.220
0.200
4.6
Freon 114 (C2C12F4)
ND
0.0460
0.0404
ND
0.322
0.283
Chloromethane
0.690
0.0449
0.0404
1.42
0.0927
0.0835
3.5
Chloroethene (Vinyl chloride)
ND
0.0461
0.0404
ND
0.118
0.103
1,3-Butadiene
ND
0.0446
0.0404
ND
0.0988
0.0895
Bromomethane
ND
0.0453
0.0404
ND
0.176
0.157
Chloroethane
ND
0.0463
0.0404
ND
0.122
0.107
Bromcethene (Vinyl bromide)
ND
0.0453
0.0404
ND
0.198
0.177
Freon 11 (CC13F)
0.267
0.0477
0.0404
1.50
0.268
0.227
3.8
Ethanol
10.1
0.0462
0.0462
19.1
0.0871
0.0871
0.7
Acrolein
0.269
0.0448
0.0404
0.616
0.103
0.0927
2.7
Freon 113 (C2C13F3)
0.208
0.0458
0.0404
1.60
0.351
0.310
1.1
1,1-Dichloroethene
ND
0.0460
0.0404
ND
0.182
0.160
Acetone
4.38
0.0456
0.0404
10.4
0.108
0.0960
1.8
Carbon disulfide
0.0513
0.0459
0.0404
0.160
0.143
0.126
0.1
Isopropyl alcohol
0.883
0.0457
0.0404
2.17
0.112
0.0994
2.1
Allyl chloride (3-chloropropene)
ND
0.0461
0.0404
ND
0.144
0.127
Acetonitrile
0.201
0.0456
0.0404
0.338
0.0766
0.0679
15.2 m
Methylene chloride
0.181
0.116
0.116
0.630
0.402
0.402
2.2
trans-1,2-Dichloroethene
ND
0.0467
0.0404
ND
0.185
0.160
Methyl tert-butyl ether
ND
0.0467
0.0404
ND
0.168
0.146
Acrylonitrile
ND
0.0463
0.0404
ND
0.101
0.0878
Hexane
0.0649
0.0465
0.0404
0.229
0.164
0.143
6.3
1,1-Dichloroethane
ND
0.0451
0.0404
ND
0.182
0.164
Vinyl acetate
ND
0.0463
0.0404
ND
0.163
0.142
cis-1,2-Dichloroethene
ND
0.0459
0.0404
ND
0.182
0.160
Methyl ethyl ketone (2-Butanone)
0.498
0.0469
0.0404
1.47
0.138
0.119
10.1
Ethyl acetate
0.683
0.0463
0.0404
2.46
0.167
0.146
2.5
Chloroform
ND
0.0464
0.0404
ND
0.227
0.197
Tetrahydrofuran
0.140
0.0461
0.0404
0.414
0.136
0.119
2.7 m
1,1,1-Trichloroethane
ND
0.0456
0.0404
ND
0.249
0.221
Cyclohexane
ND
0.0464
0.0404
ND
0.160
0.139
Carbon tetrachloride
0.0828
0.0463
0.0404
0.521
0.291
0.254
5.8
Benzene
0.0933
0.0454
0.0404
0.298
0.145
0.129
3.3
2,2,4-trimethylpentane
ND
0.0468
0.0404
ND
0.219
0.189
1,2-Dichloroethane
ND
0.0466
0.0404
ND
0.189
0.164
Heptane
0.0690
0.0459
0.0404
0.283
0.188
0.166
11.7
Trichloroethene
ND
0.0462
0.0404
ND
0.248
0.217
1,2-Dichloropropane
ND
0.0452
0.0404
ND
0.209
0.187
Methyl methacrylate
ND
0.0475
0.0404
ND
0.194
0.166
1,4-Dioxane
ND
0.0461
0.0404
ND
0.166
0.146
Bromodichloromethane
ND
0.0457
0.0404
ND
0.306
0.271
cis-1,3-Dichloropropene
ND
0.0451
0.0404
ND
0.205
0.184
Methyl isobutyl ketone
0.129
0.0472
0.0404
0.530
0.193
0.166
4.1
Toluene
0.223
0.0465
0.0404
0.840
0.175
0.152
0.6
trans-1,3-Dichloropropene
ND
0.0467
0.0404
ND
0.212
0.184
1,1,2-Trichloroethane
ND
0.0462
0.0404
ND
0.252
0.221
Tetrachloroethene
ND
0.0462
0.0404
ND
0.313
0.274
2-Hexanone (Methyl butyl ketone)
0.115
0.118
0.0404
0.470
0.485
0.166
3.4 m 3
Dibromochloromethane
ND
0.0456
0.0404
ND
0.389
0.344
1,2-Dibromoethane
ND
0.0466
0.0404
ND
0.358
0.311
Chlorobenzene
ND
0.0474
0.0404
ND
0.218
0.186
Ethylbenzene
0.0907
0.0452
0.0404
0.394
0.196
0.176
3.7
1,1,1,2-Tetrachloroethane
ND
0.0461
0.0404
ND
0.317
0.278
m-/p-Xylenes
0.292
0.0466
0.0404
1.27
0.202
0.176
3.5
o-Xylene
0.118
0.0457
0.0404
0.514
0.199
0.176
2.7
Styrene
ND
0.0449
0.0404
ND
0.191
0.172
Bromoform
ND
0.0462
0.0404
ND
0.477
0.418
1,1,2,2-Tetrachloroethane
ND
0.0462
0.0404
ND
0.317
0.278
4-Ethyltoluene
ND
0.0464
0.0404
ND
0.228
0.199
2-Chlorotoluene
ND
0.0464
0.0404
ND
0.240
0.209
EA# 0520-176 Page 21 of 37

Quantitation Report Enthalpy Analytical, LLC
Sample Name : IA-5 LD
Sample Info
0520-176; *0.667=750mL load; Can #1478
Data File
X2001897.D
Dilution
0.667
Pressurization Factor
1.732
Acquisition Date
2020-05-27 19:05:02
Instrument Method
TO15-SCN.M
Matrix
AIR
Concentration
RL
MDL
Concentration
RL
MDL
Target Compound
•----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
(PPBV)
(PPBV)
(PPBV)
(ug/m3)
(ug/m3)
(ug/m3) % Diff Flag
1,3,5-Trimethylbenzene
0.0542
0.0464
0.0404
0.267
0.228
0.199 7.0
1,2,4-Trimethylbenzene
0.150
0.0459
0.0404
0.736
0.226
0.199 3.1 m
1,3-Dichlorobenzene
ND
0.0470
0.0404
ND
0.283
0.243
1,4-Dichlorobenzene
ND
0.0464
0.0404
ND
0.279
0.243
Benzyl chloride
ND
0.0460
0.0404
ND
0.238
0.209
1,2-Dichlorobenzene
ND
0.0469
0.0404
ND
0.282
0.243
1,2,4-Trichlorobenzene
ND
0.0468
0.0404
ND
0.347
0.300
Hexachlorobutadiene
ND
0.0469
0.0404
ND
0.500
0.431
Naphthalene
ND
0.0482
0.0404
ND
0.253
0.212
1-Bromopropane
ND
0.0451
0.0404
ND
0.227
0.203
1-Octene
ND
0.0448
0.0404
ND
0.206
0.186
n-Octane
ND
0.0463
0.0404
ND
0.216
0.189
Isopropylbenzene
ND
0.0466
0.0404
ND
0.229
0.199
n-Propylbenzene
ND
0.0468
0.0404
ND
0.230
0.199
Retention Time
Concentration
Internal standards
-------------------------------------------------------------------------------------------------------------------------------
Response
(min)
(PPBV)
Flag
Bromochloromethane (IS)
519,403
11.85
5.00
PASS
1,4-Difluorobenzene (IS)
2,072,566
13.62
5.04
PASS
Chlorobenzene-d5 (IS)
1,787,642
17.80
4.80
PASS
(ND) = Not Detected
* (3) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration
IS Acceptance Criteria: RT +/-
20 sec, Response +/- 40%
EA# 0520-176 Page 22 of 37

Quantitation Report
Enthalpy Analytical, LLC
Sample Name
Sample Info
Data File
Dilution
Pressurization Factor
Acquisition Date
Instrument Method
Matrix
':[Rii1f.� 3FTi19
500mL load; Can #10893
X2001891.D
1
1.000
2020-05-27 13:02:05
T015-SCN.M
AIR
Concentration
RL
MDL
Concentration
RL
MDL
Target Compound
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
(PPBV)
(PPBV)
(PPBV)
(ug/m3)
(ug/m3)
(ug/m3) Flag*
Propylene
ND
0.0383
0.0350
ND
0.0660
0.0602
Freon 12 (CC12F2)
ND
0.0384
0.0350
ND
0.190
0.173
Freon 114 (C2C12F4)
ND
0.0398
0.0350
ND
0.279
0.245
Chloromethane
ND
0.0389
0.0350
ND
0.0803
0.0723
Chloroethene (Vinyl chloride)
ND
0.0399
0.0350
ND
0.102
0.0895
1,3-Butadiene
ND
0.0386
0.0350
ND
0.0855
0.0774
Bromomethane
ND
0.0392
0.0350
ND
0.152
0.136
Chloroethane
ND
0.0401
0.0350
ND
0.106
0.0924
Bromoethene (Vinyl bromide)
ND
0.0392
0.0350
ND
0.172
0.153
Freon 11 (CC13F)
ND
0.0413
0.0350
ND
0.232
0.197
Ethanol
ND
0.0400
0.0400
ND
0.0754
0.0754
Acrolein
ND
0.0388
0.0350
ND
0.0890
0.0803
Freon 113 (C2Cl3F3)
ND
0.0396
0.0350
ND
0.304
0.268
1,1-Dichloroethene
ND
0.0398
0.0350
ND
0.158
0.139
Acetone
0.0488
0.0395
0.0350
0.116
0.0938
0.0831
Carbon disulfide
ND
0.0397
0.0350
ND
0.124
0.109
Isopropyl alcohol
ND
0.0396
0.0350
ND
0.0973
0.0860
AIIyl chloride (3-chloropropene)
ND
0.0399
0.0350
ND
0.125
0.110
Acetonitrile
ND
0.0395
0.0350
ND
0.0663
0.0588
Methylene chloride
ND
0.100
0.100
ND
0.348
0.348
trans-1,2-Dichloroethene
ND
0.0404
0.0350
ND
0.160
0.139
Methyl tert-butyl ether
ND
0.0404
0.0350
ND
0.146
0.126
Acrylonitrile
ND
0.0401
0.0350
ND
0.0871
0.0760
Hexane
ND
0.0403
0.0350
ND
0.142
0.123
1,1-Dichloroethane
ND
0.0390
0.0350
ND
0.158
0.142
Vinyl acetate
ND
0.0401
0.0350
ND
0.141
0.123
cis-1,2-Dichloroethene
ND
0.0398
0.0350
ND
0.158
0.139
Methyl ethyl ketone (2-Butanone)
ND
0.0406
0.0350
ND
0.120
0.103
Ethyl acetate
ND
0.0400
0.0350
ND
0.144
0.126
Chloroform
ND
0.0402
0.0350
ND
0.196
0.171
Tetrahydrofuran
ND
0.0399
0.0350
ND
0.118
0.103
1,1,1-Trichloroethane
ND
0.0394
0.0350
ND
0.215
0.191
Cyclohexane
ND
0.0402
0.0350
ND
0.138
0.120
Carbon tetrachloride
ND
0.0400
0.0350
ND
0.252
0.220
Benzene
ND
0.0393
0.0350
ND
0.126
0.112
2,2,4-trimethylpentane
ND
0.0405
0.0350
ND
0.189
0.164
1,2-Dichloroethane
ND
0.0404
0.0350
ND
0.163
0.142
Heptane
ND
0.0398
0.0350
ND
0.163
0.143
Trichloroethene
ND
0.0400
0.0350
ND
0.215
0.188
1,2-Dichloropropane
ND
0.0392
0.0350
ND
0.181
0.162
Methyl methacrylate
ND
0.0411
0.0350
ND
0.168
0.143
1,4-Dioxane
ND
0.0399
0.0350
ND
0.144
0.126
Bromodichloromethane
ND
0.0396
0.0350
ND
0.265
0.235
cis-1,3-Dichloropropene
ND
0.0390
0.0350
ND
0.177
0.159
Methyl isobutyl ketone
ND
0.0408
0.0350
ND
0.167
0.143
Toluene
ND
0.0403
0.0350
ND
0.152
0.132
trans-1,3-Dichloropropene
ND
0.0404
0.0350
ND
0.184
0.159
1,1,2-Trichloroethane
ND
0.0400
0.0350
ND
0.218
0.191
Tetrachloroethene
ND
0.0400
0.0350
ND
0.271
0.237
2-Hexanone (Methyl butyl ketone)
ND
0.102
0.0350
ND
0.419
0.143
Dibromochloromethane
ND
0.0395
0.0350
ND
0.336
0.298
1,2-Dibromoethane
ND
0.0403
0.0350
ND
0.310
0.269
Chlorobenzene
ND
0.0410
0.0350
ND
0.189
0.161
Ethylbenzene
ND
0.0392
0.0350
ND
0.170
0.152
1,1,1,2-Tetrachloroethane
ND
0.0399
0.0350
ND
0.274
0.240
m-/p-Xylenes
ND
0.0404
0.0350
ND
0.175
0.152
EA# 0520-176 Page 23 of 37

Quantitation Report
Enthalpy Analytical, LLC
Sample Name
Sample Info
Data File
Dilution
Pressurization Factor
Acquisition Date
Instrument Method
Matrix
a:[I1'� IMF , 5
500mL load; Can #10893
X2001891.D
1
1.000
2020-05-27 13:02:05
T015-SCN.M
AIR
Concentration
RL
MDL
Concentration
RL
MDL
Target Compound
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
(PPBV)
(PPBV)
(PPBV)
(ug/m3)
(ug/m3)
(ug/m3) Flag*
o-Xylene
ND
0.0396
0.0350
ND
0.172
0.152
Styrene
ND
0.0388
0.0350
ND
0.165
0.149
Bromoform
ND
0.0400
0.0350
ND
0.413
0.362
1,1,2,2-Tetrachloroethane
ND
0.0400
0.0350
ND
0.274
0.240
4-Ethyltoluene
ND
0.0402
0.0350
ND
0.198
0.172
2-Chlorotoluene
ND
0.0402
0.0350
ND
0.208
0.181
1,3,5-Trimethylbenzene
ND
0.0402
0.0350
ND
0.197
0.172
1,2,4-Trimethylbenzene
ND
0.0397
0.0350
ND
0.195
0.172
1,3-Dichlorobenzene
ND
0.0407
0.0350
ND
0.245
0.210
1,4-Dichlorobenzene
ND
0.0402
0.0350
ND
0.242
0.210
Benzyl chloride
ND
0.0398
0.0350
ND
0.206
0.181
1,2-Dichlorobenzene
ND
0.0406
0.0350
ND
0.244
0.210
1,2,4-Trichlorobenzene
0.0419
0.0405
0.0350
0.311
0.301
0.260
Hexachlorobutadiene
ND
0.0406
0.0350
ND
0.433
0.373
Naphthalene
ND
0.0417
0.0350
ND
0.219
0.183
1-Bromopropane
ND
0.0390
0.0350
ND
0.196
0.176
1-Octene
ND
0.0388
0.0350
ND
0.178
0.161
n-Octane
ND
0.0401
0.0350
ND
0.187
0.164
Isopropylbenzene
ND
0.0404
0.0350
ND
0.198
0.172
n-Propylbenzene
ND
0.0405
0.0350
ND
0.199
0.172
Retention Time
Concentration
Internal Standards
------------------------------------------------------------------------------------------------------------------------------------------
Response
(min)
(PPBV)
Flag
Bromochloromethane (IS)
473,647
11.86
5.00
PASS
1,4-Dicuorobenzene (IS)
1,902,591
13.62
5.04
PASS
Chlorobenzene-d5 (IS)
1,645,017
17.80
4.80
PASS
(ND) = Not Detected
* (3) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration
IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40%
EA# 0520-176 Page 24 of 37

QC Summary Report
Enthalpy Analytical, LLC
Sample Name
Sample Info
Data File
Dilution
Pressurization Factor
Acquisition Date
Instrument Method
Matrix
: 5ppbv T015 LCS
125mL load; Can 2088; GCMSPrepPg0897
X2001887.D
1
1.000
2020-05-27 09:16:49
T015-SCN.M
AIR
Concentration Tag Value
Target Compound Response (PPBV) (PPBV) % Recovery Flag
---------------------------------------------------------------------------------------------------------------------------------------
Propylene
573,437
5.20
4.79
108.6
PASS
Freon 12 (CC12F2)
1,294,626
5.30
4.81
110.2
PASS
Freon 114 (C2Cl2F4)
1,401,511
5.32
4.98
106.9
PASS
Chloromethane
695,426
5.24
4.86
107.8
PASS
Chloroethene (Vinyl chloride)
487,148
5.34
4.99
107.2
PASS
1,3-Butadiene
503,242
5.87
4.83
121.6
PASS
Bromomethane
372,008
5.89
4.90
120.1
PASS
Chloroethane
213,955
5.10
5.01
101.9
PASS
Bromoethene (Vinyl bromide)
460,781
5.53
4.91
112.7
PASS
Freon 11(CC13F)
1,454,861
5.66
5.16
109.6
PASS
Ethanol
276,765
4.04
4.91
82.5
PASS
Acrolein
224,665
3.98
4.85
82.0
PASS
1,1-Dichloroethene
914,714
4.69
4.98
94.3
PASS
Freon 113 (C2Cl3F3)
862,375
5.13
4.96
103.4
PASS
Acetone
1,081,219
4.04
4.94
81.8
PASS
Isopropyl alcohol
1,219,064
4.37
4.95
88.3
PASS
Carbon disulfide
1,329,987
4.77
4.97
96.1
PASS
Acetonitrile
625,937
5.14
4.94
104.1
PASS
Allyl chloride (3-chloropropene)
199,210
4.66
4.99
93.5
PASS
Methylene chloride
927,412
4.20
5.01
83.8
PASS
Acrylonitrile
491,837
4.73
5.02
94.4
PASS
Methyl tert-butyl ether
1,204,127
4.70
5.05
93.0
PASS
trans-1,2-Dichloroethene
782,008
4.50
5.05
89.0
PASS
Hexane
847,984
4.13
5.04
82.1
PASS
Vinyl acetate
1,886,214
5.17
5.02
103.0
PASS
1,1-Dichloroethane
935,728
4.47
4.88
91.7
PASS
Methyl ethyl ketone (2-Butanone)
212,753
4.66
5.08
91.9
PASS
cis-1,2-Dichloroethene
926,230
4.68
4.97
94.2
PASS
Ethyl acetate
246,476
4.66
5.01
93.1
PASS
1-Bromopropane
1,272,012
5.02
4.88
102.9
PASS
Tetrahydrofuran
207,298
4.51
4.99
90.5
PASS
Chloroform
1,040,686
5.15
5.03
102.5
PASS
1,1,1-Trichloroethane
1,041,779
4.95
4.93
100.4
PASS
Cyclohexane
940,706
4.45
5.03
88.6
PASS
Carbon tetrachloride
1,203f4O5
5.07
5.01
101.3
PASS
Benzene
1,293,693
4.64
4.92
94.4
PASS
1,2-Dichloroethane
782,283
4.87
5.05
96.6
PASS
2,2,4-trimethylpentane
2,876,537
4.41
5.07
87.1
PASS
Heptane
555,415
4.18
4.97
84.0
PASS
Trichloroethene
712,049
5.13
5.00
102.7
PASS
1,2-Dichloropropane
616,445
4.43
4.90
90.4
PASS
Methyl methacrylate
512,798
4.99
5.14
97.1
PASS
EA# 0520-176 Page 25 of 37

QC Summary Report
Enthalpy Analytical, LLC
Sample Name
Sample Info
Data File
Dilution
Pressurization Factor
Acquisition Date
Instrument Method
Matrix
: 5ppbv T015 LCS
125mL load; Can 2088; GCMSPrepPg0897
X2001887.D
1
1.000
2020-05-27 09:16:49
T015-SCN.M
AIR
Concentration Tag Value
Target Compound Response (PPBV) (PPBV) % Recovery Flag
---------------------------------------------------------------------------------------------------------------------------------------
1,4-Dioxane
313,460
4.20
4.99
84.2
PASS
Bromodichloromethane
1,124,402
5.31
4.95
107.3
PASS
cis-1,3-Dichloropropene
799,592
4.76
4.88
97.5
PASS
Methyl isobutyl ketone
1,903,840
4.91
5.11
96.1
PASS
Toluene
1,726,599
5.01
5.04
99.5
PASS
1-Octene
384,077
4.50
4.85
92.9
PASS
n-Octane
504,828
4.66
5.01
93.1
PASS
trans-1,3-Dichloropropene
863,600
5.22
5.06
103.3
PASS
1,1,2-Trichloroethane
613,277
5.16
5.00
103.4
PASS
Tetra chloroethene
981,159
5.16
5.00
103.1
PASS
2-Hexanone (Methyl butyl ketone)
1,818,305
5.74
5.12
112.1
PASS
Dibromochloromethane
1,360,482
5.75
4.94
116.4
PASS
1,2-Dibromoethane
1,117,582
5.38
5.04
106.7
PASS
Chlorobenzene
1,538,469
5.45
5.13
106.3
PASS
Ethylbenzene
2,285,735
5.04
4.90
103.0
PASS
1,1,1,2-Tetrachloroethane
907,022
5.32
4.99
106.5
PASS
m-/p-Xylenes
1,886,072
5.14
5.05
101.9
PASS
o-Xylene
1,857,732
4.95
4.95
100.0
PASS
Styrene
1,426,924
5.00
4.86
102.9
PASS
Bromoform
1,457,467
6.19
5.00
123.8
PASS
Isopropyl benzene
2,664,379
5.10
5.05
101.1
PASS
1,1,2,2-Tetrachloroethane
1,474,210
5.26
5.00
105.3
PASS
n-Propylbenzene
3,222,566
5.34
5.06
105.6
PASS
4-Ethyltoluene
2,668,039
5.09
5.03
101.3
PASS
2-Chlorotoluene
2,309,693
5.20
5.02
103.7
PASS
1,3,5-Trimethyl benzene
2,301,519
5.08
5.02
101.2
PASS
1,2,4-Trimethyl benzene
2,280,600
4.99
4.97
100.6
PASS
1,3-Dichlorobenzene
1,644,190
5.48
5.09
107.7
PASS
1,4-Dichlorobenzene
1,631,185
5.52
5.02
110.0
PASS
Benzyl chloride
1,955,682
5.46
4.98
109.5
PASS
1,2-Dichlorobenzene
1,626,199
5.45
5.08
107.5
PASS
1,2,4-Trichlorobenzene
1,101,747
5.43
5.06
107.2
PASS
Hexachlorobutadiene
1,311,105
5.00
5.08
98.5
PASS
Naphthalene
2,537,330
5.15
5.21
98.8
PASS
EA# 0520-176 Page 26 of 37

Quantitation Report
Enthalpy Analytical, LLC
Sample Name
Sample Info
Data File
Dilution
Pressurization Factor
Acquisition Date
Instrument Method
Matrix
5ppbv T015 LCS
125mL load; Can 2088; GCMSPrepPg0897
X2001887.D
1
1.000
2020-05-27 09:16:49
TO15-SCN.M
AIR
Concentration
RL
MDL
Concentration
RL
MDL
Target Compound
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
(PPBV)
(PPBV)
(PPBV)
(ug/m3)
(ug/m3)
(ug/m3)
Flag*
Propylene
5.20
0.0383
0.0350
8.95
0.0660
0.0602
Freon 12 (CC12F2)
5.30
0.0384
0.0350
26.2
0.190
0.173
Freon 114 (C2C12F4)
5.32
0.0398
0.0350
37.2
0.279
0.245
Chloromethane
5.24
0.0389
0.0350
10.8
0.0803
0.0723
Chloroethene (Vinyl chloride)
5.34
0.0399
0.0350
13.7
0.102
0.0895
1,3-Butadiene
5.87
0.0386
0.0350
13.0
0.0855
0.0774
Bromomethane
5.89
0.0392
0.0350
22.9
0.152
0.136
Chloroethane
5.10
0.0401
0.0350
13.5
0.106
0.0924
Bromoethene (Vinyl bromide)
5.53
0.0392
0.0350
24.2
0.172
0.153
Freon 11 (CC13F)
5.66
0.0413
0.0350
31.8
0.232
0.197
Ethanol
4.04
0.0400
0.0400
7.62
0.0754
0.0754
Acrolein
3.98
0.0388
0.0350
9.12
0.0890
0.0803
Freon 113 (C2Cl3F3)
5.13
0.0396
0.0350
39.3
0.304
0.268
1,1-Dichloroethene
4.69
0.0398
0.0350
18.6
0.158
0.139
Acetone
4.04
0.0395
0.0350
9.59
0.0938
0.0831
m
Carbon disulfide
4.77
0.0397
0.0350
14.9
0.124
0.109
Isopropyl alcohol
4.37
0.0396
0.0350
10.7
0.0973
0.0860
AIIyl chloride (3-chloropropene)
4.66
0.0399
0.0350
14.6
0.125
0.110
Acetonitrile
5.14
0.0395
0.0350
8.63
0.0663
0.0588
Methylene chloride
4.20
0.100
0.100
14.6
0.348
0.348
m
trans-1,2-Dichloroethene
4.50
0.0404
0.0350
17.8
0.160
0.139
Methyl tert-butyl ether
4.70
0.0404
0.0350
16.9
0.146
0.126
Acrylonitrile
4.73
0.0401
0.0350
10.3
0.0871
0.0760
Hexane
4.13
0.0403
0.0350
14.6
0.142
0.123
1,1-Dichloroethane
4.47
0.0390
0.0350
18.1
0.158
0.142
Vinyl acetate
5.17
0.0401
0.0350
18.2
0.141
0.123
m
cis-1,2-Dichloroethene
4.68
0.0398
0.0350
18.6
0.158
0.139
Methyl ethyl ketone (2-Butanone)
4.66
0.0406
0.0350
13.8
0.120
0.103
Ethyl acetate
4.66
0.0400
0.0350
16.8
0.144
0.126
Chloroform
5.15
0.0402
0.0350
25.2
0.196
0.171
Tetrahydrofuran
4.51
0.0399
0.0350
13.3
0.118
0.103
1,1,1-Trichloroethane
4.95
0.0394
0.0350
27.0
0.215
0.191
Cyclohexane
4.45
0.0402
0.0350
15.3
0.138
0.120
Carbon tetrachloride
5.07
0.0400
0.0350
31.9
0.252
0.220
Benzene
4.64
0.0393
0.0350
14.8
0.126
0.112
2,2,4-trimethylpentane
4.41
0.0405
0.0350
20.6
0.189
0.164
1,2-Dichloroethane
4.87
0.0404
0.0350
19.7
0.163
0.142
Heptane
4.18
0.0398
0.0350
17.1
0.163
0.143
Trichloroethene
5.13
0.0400
0.0350
27.6
0.215
0.188
1,2-Dichloropropane
4.43
0.0392
0.0350
20.5
0.181
0.162
Methyl methacrylate
4.99
0.0411
0.0350
20.4
0.168
0.143
1,4-Dioxane
4.20
0.0399
0.0350
15.1
0.144
0.126
Bromodichloromethane
5.31
0.0396
0.0350
35.6
0.265
0.235
cis-1,3-Dichloropropene
4.76
0.0390
0.0350
21.6
0.177
0.159
Methyl isobutyl ketone
4.91
0.0408
0.0350
20.1
0.167
0.143
Toluene
5.01
0.0403
0.0350
18.9
0.152
0.132
trans-1,3-Dichloropropene
5.22
0.0404
0.0350
23.7
0.184
0.159
1,1,2-Trichloroethane
5.16
0.0400
0.0350
28.2
0.218
0.191
m
Tetrachloroethene
5.16
0.0400
0.0350
35.0
0.271
0.237
2-Hexanone (Methyl butyl ketone)
5.74
0.102
0.0350
23.5
0.419
0.143
Dibromochloromethane
5.75
0.0395
0.0350
48.9
0.336
0.298
1,2-Dibromoethane
5.38
0.0403
0.0350
41.3
0.310
0.269
Chlorobenzene
5.45
0.0410
0.0350
25.1
0.189
0.161
Ethylbenzene
5.04
0.0392
0.0350
21.9
0.170
0.152
1,1,1,2-Tetrachloroethane
5.32
0.0399
0.0350
36.5
0.274
0.240
m-/p-Xylenes
5.14
0.0404
0.0350
22.3
0.175
0.152
EA# 0520-176 Page 27 of 37

Quantitation Report
Enthalpy Analytical, LLC
Sample Name
Sample Info
Data File
Dilution
Pressurization Factor
Acquisition Date
Instrument Method
Matrix
5ppbv T015 LCS
125mL load; Can 2088; GCMSPrepPg0897
X2001887.D
1
1.000
2020-05-27 09:16:49
TO15-SCN.M
AIR
Concentration
RL
MDL
Concentration
RL
MDL
Target Compound
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
(PPBV)
(PPBV)
(PPBV)
(ug/m3)
(ug/m3)
(ug/m3) Flag*
o-Xylene
4.95
0.0396
0.0350
21.5
0.172
0.152
Styrene
5.00
0.0388
0.0350
21.3
0.165
0.149
Bromoform
6.19
0.0400
0.0350
63.9
0.413
0.362
1,1,2,2-Tetrachloroethane
5.26
0.0400
0.0350
36.1
0.274
0.240
4-Ethyltoluene
5.09
0.0402
0.0350
25.0
0.198
0.172
2-Chlorotoluene
5.20
0.0402
0.0350
26.9
0.208
0.181
1,3,5-Trimethylbenzene
5.08
0.0402
0.0350
25.0
0.197
0.172
1,2,4-Trimethylbenzene
4.99
0.0397
0.0350
24.5
0.195
0.172
1,3-Dichlorobenzene
5.48
0.0407
0.0350
32.9
0.245
0.210
1,4-Dichlorobenzene
5.52
0.0402
0.0350
33.2
0.242
0.210
Benzyl chloride
5.46
0.0398
0.0350
28.2
0.206
0.181
1,2-Dichlorobenzene
5.45
0.0406
0.0350
32.8
0.244
0.210
1,2,4-Trichlorobenzene
5.43
0.0405
0.0350
40.3
0.301
0.260
Hexachlorobutadiene
5.00
0.0406
0.0350
53.4
0.433
0.373
Naphthalene
5.15
0.0417
0.0350
27.0
0.219
0.183
1-Bromopropane
5.02
0.0390
0.0350
25.2
0.196
0.176
1-Octene
4.50
0.0388
0.0350
20.7
0.178
0.161
n-Octane
4.66
0.0401
0.0350
21.8
0.187
0.164
Isopropylbenzene
5.10
0.0404
0.0350
25.1
0.198
0.172
n-Propylbenzene
5.34
0.0405
0.0350
26.3
0.199
0.172
Retention Time
Concentration
Internal Standards
------------------------------------------------------------------------------------------------------------------------------------------
Response
(min)
(PPBV)
Flag
Bromochloromethane (IS)
512,707
11.85
5.00
PASS
1,4-Difuorobenzene (IS)
2,066,754
13.62
5.04
PASS
Chlorobenzene-d5 (IS)
1,862,522
17.80
4.80
PASS
(ND) = Not Detected
* (1) = Below Calibration Range, (E) = Above Calibration Range, (m) = Manual Integration
IS Acceptance Criteria: RT +/- 20 sec, Response +/- 40%
EA# 0520-176 Page 28 of 37

Canister and Controller Data Sheet
Enthalpy Analytical, LLC
Client Name: Mid -Atlantic Associates, Inc
Client #: R3358.01; Northern Telecom -Durham, NC
Enthalpy Job #: 0520-176
Controller Data
Controller ID
Data File
Initial Flow
cc min
Return Flow
cc min
5B-11971
T200430
3.5
3.9
5B-01540
T200303
3.5
3.5
5B-01597
T200305
3.5
3.5
5B-11972
T200430
3.5
3.5
5B-01918
T200430
3.5
3.6
5B-07536
T200430
3.5
3.7
5B-01875
T200430
3.5
3.6
5B-11969
T200430
3.5
3.6
Canister Data
Canister ID
Blank Check Datafile
Canister Pressure
Pre -Sample
(mmHg)
Canister Pressure
Post -Sample
(mmHg)
Canister Pressure
Final
(mmHg)
Canister
Pressurization
Factor
24090
X2001613
-758
-106
380
1.744
1436
X2000857
-758
-70
424
1.717
000020
Y2000356
-758
-63
444
1.728
0724
X2000910
-758
-57
451
1.724
1478
X1905063
-758
-57
457
1.732
0719
X2000822
-758
-5
559
1.748
0723
X2001655
-758
-70
463
1.774
0744
X2000802
-758
-109
389
1.766
Date Prepared: 5 22 20
Date Received: 5 27 20
Prepared Bv: AAM
Received Bv: AMM3
0520-176 CanContrDataSheet V6c (complete)
EA# 0520-176 Page 29 of 37

F- p )7OPOU
ENTHALPY
A A A LY i I C A t.
Narrative Summary
EA# 0520-176 Page 30 of 37

Enthalpy Analytical Narrative Summary
Company
Mid -Atlantic Associates, Inc.
Analyst
TDD
Parameters
EPA Method TO-15
Client #
R3358.01
Job #
0520-176
# Samples
8 Canisters
Custody Alyssa Miller received the samples on 5/27/20 after being relinquished
by Mid -Atlantic Associates, Inc. The samples were received at ambient
temperature and in good condition.
Prior to, during, and after analysis, the samples were kept under lock
with access only to authorized personnel by Enthalpy Analytical, LLC.
Analysis The samples were analyzed for the TO-15 target compounds list using
the analytical procedures in EPA Method TO-15, Determination of
Volatile Organic Compounds (VOCs) In Air Collected In Specially -
Prepared Canisters And Analyzed by Gas Chromatography/Mass
Spectrometry (GUMS).
Upon receipt, the canister pressures were measured and recorded. The
canisters were then pressurized with UHP nitrogen and a dilution ratio
was calculated for each canister (see Canister Pressurization Sheet in the
Lab QC section of this report).
The samples were analyzed at a 750mL load resulting in a 0.667-fold
dilution to meet the client's requested MDL of 0.05ppbv. Dilution
factors are displayed in the sample header information.
The Agilent Technologies Model 6890N, Gas Chromatograph "Xavier"
(S/N US10721018) was equipped with a 5975C VL Mass Selective
Detector (S/N US71215962) and a Restek Rtx-624 Sil MS, 60 in x
0.32 mm x 1.8 µm capillary column (S/N 1555499) for this analysis. All
samples and standards were introduced directly to the analyzer using an
Entech 7200 Preconcentrator.
Calibration The BFB tune analyses associated with the initial and continuing
calibrations met all method acceptance criteria.
The initial calibration (X050420A-T015) met the 30% RSD criteria.
The initial calibration verification met the 70-130% recovery criteria.
The continuing calibrations met the 30% difference criteria. Full
calibration data is available upon request.
Chromatographic The acquisition method (T015-SCN2.* has not been included in this
Conditions level 2 report, however is available upon request.
r�
071,_
ENTHALPY
n N n L Y 1 I C A I.
EA# 0520-176 Page 31 of 37

Enthalpy Analytical Narrative Summary
(continued)
QC Notes All internal standard area (IS) responses and retention time criteria were
met for these analyses.
The Laboratory Duplicates (LD) analyzed with each batch met the 25%
difference criteria.
The laboratory humid blank associated with the analysis of these
samples did not contain any of the target analytes at a concentration
greater than 3 times the MDL value.
The Laboratory Control Samples (LCSs) met the 70-130% recovery
criteria.
All samples were analyzed within the 30-day holding time required by
the method.
Reporting Notes These analyses met the requirements of the TNI Standard. Any
deviations from the requirements of the reference method or TNI
Standard have been stated above.
'i
�0 L
ENTHALPY
A N A L Y 1 1 C A I.
The results presented in this report are representative of the samples as
provided to the laboratory.
EA# 0520-176 Page 32 of 37

General Reporting Notes
The following are general reporting notes that are applicable to all Enthalpy Analytical, LLC data
reports, unless specifically noted otherwise.
• Any analysis which refers to the method as "Type" represents a planned deviation from the
reference method. For instance a Hydrogen Sulfide assay from a Tedlar bag would be labeled
as "EPA Method 16-Type" because Tedlar bags are not mentioned as one of the collection
options in EPA Method 16.
• The acronym MDL represents the Minimum Detection Limit. Below this value the laboratory
cannot determine the presence of the analyte of interest reliably.
• The acronym LOQ represents the Limit of Quantification. Below this value the laboratory
cannot quantitate the analyte of interest within the criteria of the method.
• The acronym ND following a value indicates a non -detect or analytical result below the MDL.
• The letter J in the Qualifier or Flag column in the results indicates that the value is between
the MDL and the LOQ. The laboratory can positively identify the analyte of interest as
present, but the value should be considered an estimate.
• The letter E in the Qualifier or Flag column indicates an analytical result exceeding 100% of
the highest calibration point. The associated value should be considered as an estimate.
• Sample results are presented `as measured' for single injection methodologies, or an average
value if multiple injections are made. If all injections are below the MDL, the sample is
considered non -detect and the ND value is presented. If one, but not all, are below the MDL,
the MDL value is used for any injections that are below the MDL. For example, if the MDL is
0.500 and LOQ is 1.00, and the instrument measures 0.355, 0.620, and 0.442 - the result
reported is the average of 0.500, 0.620, and 0.500 - - - i.e. 0.540 with a J flag.
• When a spike recovery (Bag Spike, Collocated Spike Train, or liquid matrix spike) is being
calculated, the native (unspiked) sample result is used in the calculations, as long as the value
is above the MDL. If a sample is ND, then 0 is used as the native amount (not the MDL
value).
• The acronym DF represents Dilution Factor. This number represents dilution of the sample
during the preparation and/or analysis process. The analytical result taken from a laboratory
instrument is multiplied by the DF to determine the final undiluted sample results.
• The addition of MS to the Sample ID represents a Matrix Spike. An aliquot of an actual
sample is spiked with a known amount of analyte so that a percent recovery value can be
determined. The MS analysis indicates what effect the sample matrix may have on the target
analyte, i.e. whether or not anything in the sample matrix interferes with the analysis of the
analyte(s).
�)
ENTHALPY
A V A L Y i I C A L
EA# 0520-176 Page 33 of 37

General Reporting Notes
(continued)
• The addition of MSD to the Sample ID represents a Matrix Spike Duplicate. Prepared in the
same manner as a MS, the use of duplicate matrix spikes allows further confirmation of
laboratory quality by showing the consistency of results gained by performing the same steps
multiple times.
• The addition of LD to the Sample ID represents a Laboratory Duplicate. The analyst prepares
an additional aliquot of sample for testing and the results of the duplicate analysis are
compared to the initial result. The result should have a difference value of within 10% of the
initial result (if the results of the original analysis are greater than the LOQ).
• The addition of AD to the Sample ID represents an Alternate Dilution. The analyst prepares an
additional aliquot at a different dilution factor (usually double the initial factor). This analysis
helps confirm that no additional compound is present and coeluting or sharing absorbance with
the analyte of interest, as they would have a different response/absorbance than the analyte of
interest.
• The Sample ID LCS represents a Laboratory Control Sample. Clean matrix, similar to the
client sample matrix, prepared and analyzed by the laboratory using the same reagents, spiking
standards and procedures used for the client samples. The LCS is used to assess the control of
the laboratory's analytical system. Whenever spikes are prepared for our client projects, two
spikes are retained as LCSs. The LCSs are labeled with the associated project number and kept
in-house at the appropriate temperature conditions. When the project samples are received for
analysis, the LCSs are analyzed to confirm that the analyte could be recovered from the media,
separate from the samples which were used on the project and which may have been affected
by source matrix, sample collection, and/or sample transport.
• Significant Figures: Where the reported value is much greater than unity (1.00) in the units
expressed, the number is rounded to a whole number of units, rather than to 3 significant
figures. For example, a value of 10,456.45 ug catch is rounded to 10,456 ug. There are five
significant digits displayed, but no confidence should be placed on more than two significant
digits. In the case of small numbers, generally 3 significant figures are presented, but still only
2 should be used with confidence. Many neat materials are only certified to 3 digits, and as the
mathematically correct final result is always 1 digit less than all its pre -cursors - 2 significant
figures are what are most defensible.
• Manual Integration: The data systems used for processing will flag manually integrated
peaks with an "M". There are several reasons a peak may be manually integrated. These
reasons will be identified by the following two letter designations on sample chromatograms,
if provided in the report. The peak was not integrated by the software "NI", the peak was
integrated incorrectly by the software "II" or the wrong peak was integrated by the software
"WP". These codes will accompany the analyst's manual integration stamp placed next to the
compound name on the chromatogram.
'r
■�)
ENTHALPY
A V A L Y i I C A L
EA# 0520-176 Page 34 of 37

�)
ENTHALPY
A V A L Y i I C A L
Sample Custody
EA# 0520-176 Page 35 of 37

Air Chain of Custody Record
L N T HAL APYLab No:
Y��j A N A I T I C A L page; 1 Of !
Turn Around Time (rush by advanced notice only)
Standard:
�
5 Day:
1 Day:
3 Day:
2 Day:
Custom TAT
Enthalpy Analytical - Durham CUSTOMER INFORMATION
800 Capitola Drive, Suite 1, Durham, NC 27713 Company: 17 cr �c{w6
Phone [phone] Report To: t-: e P� d
PROJECT INFORMATION
Name:
Number:
3 S t,
Special Instructions: Email: [GLi rqr 3 ,err' a 4�r- P.O. #: 3 U
ddress: t is c� �• ��bt Address: ,j Y 5Y
2,_ Phone: Wq S G ct Gt 1 B' Global ID:
1] Fax: ISampled 6y: �s, •-�
Analysis Requested
Type Equipment Information Sampling Information �_
IA i"dow S"ze flow Sample Sample Vacuum Sample Sample
Sample I#7 (a) Ambient
Canister ID {1L 3L, Controller Start Start Start End End ISV]SoilVapor{S) Source 6L,15L] ID Date Time IHgl Date Time 'H')
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This Is The Last Page
F- P )70POU
ENTHALPY
A V A L Y i I C A L
Of This Report.
EA# 0520-176 Page 37 of 37

APPENDIX E
INDOOR AIR AND AMBIENT AIR VAPOR INTRUSION
RISK CALCULATIONS (ALL COMPOUNDS)
10 Mid Atlantic

North Carolina Department of Environmental Quality
Risk Calculator
Version Date:
December 2019
Basis:
November 2019 EPA RSL Table
Site Name:
Northern Telecom (Park Point)
Site Address:
4001 and 4151 NC East Hwy 54, Durham, NC
DEQ Section:
Brownfields Program
Site ID:
MAA Project Number R3358.01
Exposure Unit ID:
Max Concentrations (all compounds) - May 26, 2020
Submittal Date:
6/2/2020
Prepared By:
Katie Lippard
Reviewed B
North Carolina DEQ Risk Calculator

Risk for Individual Pathways
rim
Version Date: December 2019
Basis: November 2019 EPA RSL Table
7
Site ID: MAA Project Number R3358.01
Ex ooure Unit ID: Max Concentrations all compounds) -May 26, 2020
DIRECT CONTACT SOIL AND WATER CALCULATORS
Receptor
Pathway
Carciinn kenic
Hazard Index
Risk exceeded?
Resident
Soil
0.0E+00
0.0E+00
NO
NC
Groundwater Use*
NC
NC
Non -Residential Worker
Soil
0.0E+00
0.0E+00
NO
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 no
Receptor
Pathway
CarcinogenicRisk
Hazard Index
Risk exceeded?
Resident
Groundwater to Indoor Air
0.0E+00
0.0E+00
NO
Soil Gas to Indoor Air
0.0E+00
0.0E+00
NO
Indoor Air
1.1E-05
3.9E+01
YES
Non -Residential Worker
Groundwater to Indoor Air
0.0E+00
0.0E+00
NO
Soil Gas to Indoor Air
0.0E+00
0.0E+00
NO
Indoor Air
2.6E-06
9.3E+00
YES
CONTAMINANT MIGRATION CALCULATORS
Pathway
Source
Target Receptor Concentrations Exceeded?
Groundwater
Source Soil
Exceedence of 21, at Receptor?
NM
Source Groundwater
Exceedence of 21, at Receptor?
NM
Surface Water
Source Soil
Exceedence of 2B at Receptor?
NM
Source Groundwater
Exceedence of 2B at Receptor?
NM
Notes:
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the NC
213 Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk -based
closure.
3. NM = Not Modeled
4. NC = Pathway not complete
North Carolina DEQ Risk Calculator

Risk Calculator - Vapor Intrusion - Resident Indoor Air
ersion Date: December 2019
asis: November 2019 EPA RSL Table
to ID: MAA Project Number R3358.01
xnosure Unit ID: Max Concentrations (all comnounds) - Mav 26. 2020
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic
risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 µg/m3.
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if
indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals
are likely not associated with vapor intrusion.
All concentrations are in ug/m3
CAS #
Chemical Name:
Indoor Air
Concentration
3
(ug/m)
Target Indoor
Au Conc. for
Carcinogens @
TCR = 1 E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
20.7
6.5E+03
6.4E-04
75-05-8
Acetouitrile
0.415
1.3E+01
6.6E-03
107-02-8
Acrolein
0.802
4.2E-03
3.8E+01
71-43-2
Benzene
0.671
3.6E-01
6.3E+00
1.9E-06
2.1E-02
75-15-0
Carbon Disulfide
0.25
1.5E+02
3.4E-04
56-23-5
Carbon Tetrachloride
0.552
4.7E-01
2.1E+01
1.2E-06
5.3E-03
75-71-8
Dichlorodifluoromethane
3.48
2.1E+01
3.3E-02
123-91-1
Dioxane, 1,4-
0.472
5.6E-01
6.3E+00
8.4E-07
1.5E-02
141-78-6
Ethyl Acetate
2.52
1.5E+01
3.5E-02
100-41-4
Eth lbenzene
1.05
1.1E+00
2.1E+02
9.3E-07
1.0E-03
109-99-9
-Tetrah drofuran
0.819
4.2E+02
3.9E-04
142-82-5
Heptane, N-
0.333
8.3E+01
8.0E-04
110-54-3
Hexane, N-
0.293
1.5E+02
4.0E-04
591-78-6
Hexanone, 2-
1.73
6.3E+00
5.5E-02
67-63-0
Isopropanol
4.81
4.2E+01
2.3E-02
78-93-3
Methyl Ethyl Ketone (2-Butanone)
2.74
1.0E+03
5.3E-04
108-10-1
Methyl Isobutyl Ketone (4-methyl-2-pentanone)
1.1
6.3E+02
3.5E-04
75-09-2
Methylene Chloride
0.72
1.0E+02
1.3E+02
7.1E-09
1.2E-03
91-20-3
-Naphthalene
0.528
8.3E-02
6.3E-01
6.4E-06
1.7E-01
115-07-1
Propylene
0.739
6.3E+02
2.4E-04
100-42-5
Styrene
0.479
2.1E+02
4.6E-04
108-88-3
Toluene
0.96
1.0E+03
1.8E-04
76-13-1
Trichloro-1,2,2-trifluoroethane, 1,1,2-
2.22
1.0E+03
4.3E-04
120-82-1
Trichlorobenzene, 1,2,4-
0.396
4.2E-01
1.9E-01
75-694
Trichlorofluoromethane
1.92
95-63-6
Trimethylbenzene, 1,2,4-
1.21
1.3E+01
1.9E-02
108-67-8
Trimethylbenzene, 1,3,5-
0.339
1.3E+01
5.4E-03
108-38-3
Xylene, m-
3.1
2.1E+01
3.0E-02
9547-6
Xylene, o-
1.12
2.1E+01
1.1E-02
Cumulative: I 1.1E-05 I3.9E+O1
North Carolina DEQ Risk Calculator

IDEO Risk Calculator - VaDor Intrusion - Non -Residential Worker Indoor Air r
:ion Date: December 2019
s: November 2019 EPA RSL Table
Site ID: MAA Project Number R3358.01 J
EXDOSure Unit ID: Max Concentrations (all compounds) - Mav 26.2020
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic
risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 µg/m3.
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if
indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are
likely not associated with vapor intrusion.
All concentrations are in u2/m3
CAS #
Chemical Name:
Indoor Air
Concentration
3
(ug/m)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non -
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
20.7
2.7E+04
1.5E-04
75-05-8
Acetonitrile
0.415
5.3E+01
1.6E-03
107-02-8
Acrolein
0.802
1.8E-02
9.2E+00
7143-2
Benzene
0.671
1.6E+00
2.6E+01
4.3E-07
5.1E-03
75-15-0
Carbon Disulfide
0.25
6.1E+02
8.2E-05
56-23-5
Carbon Tetrachloride
0.552
2.0E+00
8.8E+01
2.7E-07
1.3E-03
75-71-8
Dichlorodifluoromethane
3.48
8.8E+01
7.9E-03
123-91-1
Dioxane, 1,4-
0.472
2.5E+00
2.6E+01
1.9E-07
3.6E-03
141-78-6
Ethyl Acetate
2.52
6.1E+01
8.2E-03
100414
Eth lbenzene
1.05
4.9E+00
8.8E+02
2.1E-07
2.4E-04
109-99-9
-Tetrah drofuran
0.819
1.8E+03
9.3E-05
142-82-5
He tane, N-
0.333
3.5E+02
1.9E-04
110-54-3
Hexane, N-
0.293
6.1E+02
9.6E-05
591-78-6
Hexanone, 2-
1.73
2.6E+01
1.3E-02
67-63-0
Iso ro anol
4.81
1.8E+02
5.5E-03
78-93-3
Methyl Ethyl Ketone 2-Butanone
2.74
4.4E+03
1.3E-04
108-10-1
Methyl Isobutyl Ketone 4-meth 1-2- entanone
1.1
2.6E+03
8.4E-05
75-09-2
Methylene Chloride
0.72
1.2E+03
5.3E+02
5.9E-10
2.7E-04
91-20-3
-Naphthalene
0.528
3.6E-01
2.6E+00
1.5E-06
4.0E-02
115-07-1
Propylene
0.739
2.6E+03
5.6E-05
10042-5
Styrene
0.479
8.8E+02
1.1E-04
108-88-3
Toluene
0.96
4.4E+03
4.4E-05
76-13-1
Trichloro-1,2,2-trifluoroethane, 1,1,2-
2.22
4.4E+03
1.0E-04
120-82-1
Trichlorobenzene, 1,2,4-
0.396
1.8E+00
4.5E-02
75-69-4
Trichlorofluoromethane
1.92
95-63-6
Trimeth lbenzene, 1,2,4-
1.21
5.3E+01
4.6E-03
108-67-8
1 Trimeth lbenzene, 1,3,5-
1 0.339
1
5.3E+01
1
-03
108-38-3
X lene, m-
3.1
8.8E+01
7.1E-03
95-47-6
X lene, o-
1.12
8.8E+01
2.6E-03
Cumulative: I 2.6E-06 9.3E+00
North Carolina DEQ Risk Calculator

APPENDIX F
INDOOR AIR AND AMBIENT AIR RISK CALCULATIONS
(MINUS ACROLEIN)
10 Mid Atlantic

North Carolina Department of Environmental Quality
Risk Calculator
Version Date:
December 2019
Basis:
November 2019 EPA RSL Table
Site Name:
Northern Telecom (Park Point)
Site Address:
4001 and 4151 NC East Hwy 54, Durham, NC
DEQ Section:
Brownfields Program
Site ID:
MAA Project Number R3358.01
Exposure Unit ID:
Max Concentrations (minus acrolein) May 26, 2020
Submittal Date:
6/2/2020
Prepared By:
Katie Lippard
Reviewed B
North Carolina DEQ Risk Calculator

Risk for Individual Pathways
rim
Version Date: December 2019
Basis: November 2019 EPA RSL Table
7
Site ID: MAA Project Number R3358.01
Exposure Unit ID: Max Concentrations minus acrolein May 26, 2020
DIRECT CONTACT SOIL AND WATER CALCULATORS
Receptor
Pathway
Carciinn kenic
Hazard Index
Risk exceeded?
Resident
Soil
0.0E+00
0.0E+00
NO
NC
Groundwater Use*
NC
NC
Non -Residential Worker
Soil
0.0E+00
0.0E+00
NO
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 no
Receptor
Pathway
CarcinogenicRisk
Hazard Index
Risk exceeded?
Resident
Groundwater to Indoor Air
0.0E+00
0.0E+00
NO
Soil Gas to Indoor Air
0.0E+00
0.0E+00
NO
Indoor Air
1.1E-05
6.3E-01
NO
Non -Residential Worker
Groundwater to Indoor Air
0.0E+00
0.0E+00
NO
Soil Gas to Indoor Air
0.0E+00
0.0E+00
NO
Indoor Air
2.6E-06
1.5E-01
NO
CONTAMINANT MIGRATION CALCULATORS
Pathway
Source
Target Receptor Concentrations Exceeded?
Groundwater
Source Soil
Exceedence of 21, at Receptor?
NM
Source Groundwater
Exceedence of 21, at Receptor?
NM
Surface Water
Source Soil
Exceedence of 2B at Receptor?
NM
Source Groundwater
Exceedence of 2B at Receptor?
NM
Notes:
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the NC
213 Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk -based
closure.
3. NM = Not Modeled
4. NC = Pathway not complete
North Carolina DEQ Risk Calculator

Risk Calculator - Vapor Intrusion - Resident Indoor Air
ersion Date: December 2019
asis: November 2019 EPA RSL Table
Site ID: MAA Project Number R3358.01
Exposure Unit ID: Max Concentrations (minus acrolein) Mav 26. 2020
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic
risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 µg/m3.
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if
indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals
are likely not associated with vapor intrusion.
All concentrations are in ug/m3
CAS #
Chemical Name:
Indoor Air
Concentration
3
(ug/m)
Target Indoor
Au Conc. for
Carcinogens @
TCR = 1 E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
20.7
6.5E+03
6.4E-04
75-05-8
Acetouitrile
0.415
1.3E+01
6.6E-03
107-02-8
Acrolein
4.2E-03
71-43-2
Benzene
0.671
3.6E-01
6.3E+00
1.9E-06
2.1E-02
75-15-0
Carbon Disulfide
0.25
1.5E+02
3.4E-04
56-23-5
Carbon Tetrachloride
0.552
4.7E-01
2.1E+01
1.2E-06
5.3E-03
75-71-8
Dichlorodifluoromethane
3.48
2.1E+01
3.3E-02
123-91-1
Dioxane, 1,4-
0.472
5.6E-01
6.3E+00
8.4E-07
1.5E-02
141-78-6
Ethyl Acetate
2.52
1.5E+01
3.5E-02
100-41-4
Eth lbenzene
1.05
1.1E+00
2.1E+02
9.3E-07
1.0E-03
109-99-9
-Tetrah drofuran
0.819
4.2E+02
3.9E-04
142-82-5
Heptane, N-
0.333
8.3E+01
8.0E-04
110-54-3
Hexane, N-
0.293
1.5E+02
4.0E-04
591-78-6
Hexanone, 2-
1.73
6.3E+00
5.5E-02
67-63-0
Isopropanol
4.81
4.2E+01
2.3E-02
78-93-3
Methyl Ethyl Ketone (2-Butanone)
2.74
1.0E+03
5.3E-04
108-10-1
Methyl Isobutyl Ketone (4-methyl-2-pentanone)
1.1
6.3E+02
3.5E-04
75-09-2
Methylene Chloride
0.72
1.0E+02
1.3E+02
7.1E-09
1.2E-03
91-20-3
-Naphthalene
0.528
8.3E-02
6.3E-01
6.4E-06
1.7E-01
115-07-1
Propylene
0.739
6.3E+02
2.4E-04
100-42-5
Styrene
0.479
2.1E+02
4.6E-04
108-88-3
Toluene
0.96
1.0E+03
1.8E-04
76-13-1
Trichloro-1,2,2-trifluoroethane, 1,1,2-
2.22
1.0E+03
4.3E-04
120-82-1
Trichlorobenzene, 1,2,4-
0.396
4.2E-01
1.9E-01
75-694
Trichlorofluoromethane
1.92
95-63-6
Trimethylbenzene, 1,2,4-
1.21
1.3E+01
1.9E-02
108-67-8
Trimethylbenzene, 1,3,5-
0.339
1.3E+01
5.4E-03
108-38-3
Xylene, m-
3.1
2.1E+01
3.0E-02
9547-6
Xylene, o-
1.12
2.1E+01
1.1E-02
Cumulative: I 1.1E-05 I6.3E-01
North Carolina DEQ Risk Calculator

DEQ Risk Calculator - Vapor Intrusion - Non -Residential Worker Indoor Air i
Version Date: December 2019
Basis: November 2019 EPA RSL Table
Site ID: MAA Project Number R3358.01
Ex osure Unit ID: Max Concentrations minus acrolein May 26, 2020
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic
risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 µg/m3.
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if
indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are
likely not associated with vapor intrusion.
All concentrations are in u m3
1.5E-0 l
CAS #
Chemical Name:
Indoor Air
Concentration
3
(ug/m)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non -
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
20.7
-
2.7E+04
1.5E-04
75-05-8
Acetonitrile
0.415
-
5.3E+01
1.6E-03
107-02-8
Acrolein
-
1.8E-02
7143-2
Benzene
0.671
1.6E+00
2.6E+01
4.3E-07
5.1E-03
75-15-0
Carbon Disulfide
0.25
-
6.1E+02
8.2E-05
56-23-5
Carbon Tetrachloride
0.552
2.0E+00
8.8E+01
2.7E-07
1.3E-03
75-71-8
Dichlorodifluoromethane
3.48
-
8.8E+01
7.9E-03
123-91-1
Dioxane, 1,4-
0.472
2.5E+00
2.6E+01
1.9E-07
3.6E-03
141-78-6
Ethyl Acetate
2.52
-
6.1E+01
8.2E-03
100414
Eth lbenzene
1.05
4.9E+00
8.8E+02
2.1E-07
2.4E-04
109-99-9
-Tetrah drofuran
0.819
-
1.8E+03
9.3E-05
142-82-5
He tane, N-
0.333
-
3.5E+02
1.9E-04
110-54-3
Hexane, N-
0.293
-
6.1E+02
9.6E-05
591-78-6
Hexanone, 2-
1.73
-
2.6E+01
1.3E-02
67-63-0
Iso ro anol
4.81
-
1.8E+02
5.5E-03
78-93-3
Methyl Ethyl Ketone 2-Butanone
2.74
-
4.4E+03
1.3E-04
108-10-1
Methyl Isobu 1 Ketone 4-meth 1-2- entanone
1.1
-
2.6E+03
8.4E-05
75-09-2
Methylene Chloride
0.72
1.2E+03
5.3E+02
5.9E-10
2.7E-04
91-20-3
-Naphthalene
0.528
3.6E-01
2.6E+00
1.5E-06
4.0E-02
115-07-1
Propylene
0.739
-
2.6E+03
5.6E-05
10042-5
Styrene
0.479
-
8.8E+02
1.1E-04
108-88-3
Toluene
0.96
-
4.4E+03
4.4E-05
76-13-1
Trichloro-1,2,2-trifluoroethane, 1,1,2-
2.22
-
4.4E+03
1.0E-04
120-82-1
Trichlorobenzene, 1,2,4-
0.396
-
1.8E+00
4.5E-02
75-69-4
Trichlorofluoromethane
1.92
-
-
95-63-6
Trimeth lbenzene, 1,2,4-
1.21
-
5.3E+01
4.6E-03
108-67-8
Trimeth lbenzene, 1,3,5-
0.339
-
5.3E+01
1.3E-03
108-38-3
X lene, in-
3.1
-
8.8E+01
7.1E-03
95-47-6
X lene, o-
1.12
-
8.8E+01
2.6E-03
Carolina DEQ Risk Calculator

APPENDIX G
SUB -SLAB SOIL GAS VAPOR INTRUSION RISK CALCULATIONS
(JANUARY 2017)
10 Mid Atlantic

North Carolina Department of Environmental Quality
Risk Calculator
Version Date:
December 2019
Basis:
November 2019 EPA RSL Table
Site Name:
Northern Telecom
Site Address:
4001 and 4151 East NC Hwy 54
DEQ Section:
Brownfields
Site ID:
Brownfields Proj. # 23079-19-032
Exposure Unit ID:
Cumulative Risk For Individual Pathways (Jan. 26, 2017 data)
Submittal Date:
5/l/2020
Prepared By:
Katie Lippard
Reviewed B
North Carolina DEQ Risk Calculator

Risk for Individual Pathways
rim
Version Date: December 2019
Basis: November 2019 EPA RSL Table
7
Site ID: Brownfields Proj. # 23079-19-032
Ex ooure Unit ID: Cumulative Risk For Individual Pathways Jan. 26, 2017 data)
DIRECT CONTACT SOIL AND WATER CALCULATORS
Receptor
Pathway
Risk Carcinogenic
Hazard Index
Risk exceeded`.,
Resident
Soil
4.3E-05
1.3E-01
NO
NC
Groundwater Use*
NC
NC
Non -Residential Worker
Soil
2.6E-06
8.8E-03
NO
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
CarcinogenicRisk
Hazard Index
Risk exceeded?
Resident
Groundwater to Indoor Air
0.0E+00
0.0E+00
NO
Soil Gas to Indoor Air
1.1E-05
5.0E-01
NO
Indoor Air
0.0E+00
0.0E+00
NO
Non -Residential Worker
Groundwater to Indoor Air
0.0E+00
0.0E+00
NO
Soil Gas to Indoor Air
8.2E-07
3.9E-02
NO
Indoor Air
0.0E+00
0.0E+00
NO
CONTAMINANT MIGRATION CALCULATORS
Pathway
Source
Target Receptor Concentrations Exceeded?
Groundwater
Source Soil
Exceedence of 21, at Receptor?
NM
Source Groundwater
Exceedence of 21, at Receptor?
NM
Surface Water
Source Soil
Exceedence of 2B at Receptor?
NM
Source Groundwater
Exceedence of 2B at Receptor?
NM
Notes:
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the NC
213 Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk -based
closure.
3. NM = Not Modeled
4. NC = Pathway not complete
North Carolina DEQ Risk Calculator

Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air
Version Date: December 2019
Basis: November 2019 EPA RSL Table
Site ID: Browntields Proi. # 23079-19-032
Exposure Unit ID: Cumulative Risk For Individual Pathways (Jan. 26. 2017
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
All concentrations are in ue/m3
CAS #
Chemical Name:
Soil Gas
Concentration
(ug/m3)
Calculated
Indoor Air
Concentration
(ug/m)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1 E-06
Target Indoor Air
Conc. for Non -
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
1400
42
6.5E+03
1.3E-03
71-43-2
Benzene
4
0.12
3.6E-01
6.3E+00
3.3E-07
3.8E-03
75-27-4
Bromodichloromethane
3.2
0.096
7.6E-02
1.3E-06
75-15-0
Carbon Disulfide
3.4
0.102
-
1.5E+02
1.4E-04
67-66-3
Chloroform
29
0.87
1.2E-01
2.0E+01
7.1E-06
8.5E-03
110-82-7
C clohexane
1.9
0.057
-
1.3E+03
9.1E-06
75-71-8
Dichlorodifluoromethane
1100
33
2.1E+01
3.2E-01
156-60-5
Dichloroeth lene, 1,2-trans-
2.3
0.069
-
100-41-4
Eth lbenzene
8.5
0.255
1.1E+00
2.1E+02
2.3E-07
2.4E-04
109-99-9
-Tetrah drofuran
19
0.57
4.2E+02
2.7E-04
110-54-3
Hexane, N-
9.5
0.285
1.5E+02
3.9E-04
67-63-0
Iso ro anol
580
17.4
4.2E+01
8.3E-02
78-93-3
Methyl Ethyl Ketone (2-Butanone)
110
3.3
1.0E+03
6.3E-04
108-10-1
Methyl Isobutyl Ketone 4-meth 1-2- entanone
71
2.13
6.3E+02
6.8E-04
75-09-2
Methylene Chloride
19
0.57
1.0E+02
1.3E+02
5.6E-09
9.1E-04
91-20-3
-Naphthalene
4.9
0.147
8.3E-02
6.3E-01
1.8E-06
4.7E-02
100-42-5
Styrene
3.7
0.111
2.1E+02
1.1E-04
108-88-3
Toluene
44
1.32
1.0E+03
2.5E-04
76-13-1
Trichloro-1,2,2-trifluoroethane, 1,1,2-
770
23.1
1.0E+03
4.4E-03
71-55-6
Trichloroethane, 1,1,1-
1.3
0.039
1.0E+03
7.5E-06
75-69-4
Trichlorofluoromethane
1.4
0.042
95-63-6
Trimeth lbenzene, 1,2,4-
24
0.72
1.3E+01
1.2E-02
108-67-8
Trimeth lbenzene, 1,3,5-
4.8
0.144
1.3E+01
2.3E-03
108-05-4
Vinyl Acetate
5.4
0.162
4.2E+01
7.8E-04
10642-3
X lene, P-
33
0.99
2.1E+01
9.5E-03
9547-6
X lene, o-
12
0.36
2.1E+01
3.5E-03
Cumulative: I 1.1E-05 I 5.0E-01
North Carolina DEQ Risk Calculator

DEQ Risk Calculator - Vapor Intrusion - Resident Groundwater to Indoor Air
Version Date: December 2019
Basis: November 2019 EPA RSL Table
Site ID: Brownlields Proj. # 23079-19-032
E osure Unit ID: Cumulative Risk For Individual Pathways
Jan. 26, 2017 data
Carcinogenic risk and hazard quotient cells highlighted in orange
are associated with
non-volatile chemicals. Since these
chemicals do not
pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
Groundwater concentrations are in on/L. Air concentrations are in u m
Calculated
Target Indoor
Target Indoor
Calculated
Groundwater
Indoor Air
Air Conn. for
Air Conn. for
Calculated
Non -
CAS #
Chemical Name:
Concentrate °n
Concentration
Carcinogens @
Non -Carcinogens
Carcinogenic
Carcinogenic
(ug2)
(ug/m')
TCR=1E-06
@THQ=0.2
Risk
Quotient
7440-39-3 Barium
222
1.0E-01
Cumulative
1 0.0E+00 0.0E+00

North Carolina DEQ Risk Calculator

DEQ Risk Calculator - Vapor Intrusion - Non -Residential Worker Groundwater to Indoor Air 777
Version Date: December 2019
Basis: November 2019 EPA RSL Table
Site ID: Brownfields Proi. # 23079-19-032
Unit ID: Cumulative Risk For Individual Pathways (Jan. 26, 2017
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk,
no risk values are calculated for these chemicals.
('rrnundwnte.r cnncentratinne are in no/l.. Air cnncentratinns are in no/m3
Calculated
Target Indoor
Target Indoor Air
Calculated
Groundwater
Indoor Air
Air Conc. for
Conc. for Non -
Calculated
Non -
CAS #
Chemical Name:
Concentration
Concentration
Carcinogens @
Carcinogens @
Carcinogenic
Carcinogenic
(ug/L)
(ug/m3)
TCR = 1 E-06
THQ = 0.2
Risk
Hazard
Quotient
7440-39-3
Barium
222
4.4E-01
Cumulative: I 0.0E+00 I 0.0E+00
North Carolina DEQ Risk Calculator