19067_Gateway Plaza_VIR_20190828

Mid Atlantic
Engineering & Environmental Solutions
August 28, 2019
Mr. Henry Ward
c/o Elixir Retail Partners, LLC
Loden Properties
1207 Front Street, Suite 100
Raleigh, North Carolina 27609
Subject: SUB -SLAB AND INDOOR AIR ASSESSMENT REPORT
GATEWAY PLAZA
2427 CRABTREE BOULEVARD
RALEIGH, NORTH CAROLINA
MID -ATLANTIC JOB NO. OOOR2667.01
Dear Mr. Ward:
409 Rogers View Court
Raleigh, NC 27610
office 919.250.9918
facsimile 919.250.9950
MAAONLINE.COM
We are pleased to present this Sub -Slab and Indoor Air Assessment Report for the above -
referenced site. We appreciate the opportunity to provide Loden Properties and Elixir
Retail Partners, LLC with environmental services. Please contact me at 919-250-9918 if
any questions arise or if we may be of further service.
Sincerely,
MID -ATLANTIC ASSOCIATES, INC.
4. Q 4e�
Katie Lippard
Senior Project Manager
Darin McClure, P.E.
Principal Engineer
— EXPERIENCED CUSTOMER FOCUSED INNOVATIVE

SUB -SLAB AND INDOOR AIR ASSESSMENT REPORT
GATEWAY PLAZA
2427 CRABTREE BOULEVARD
RALEIGH, NORTH CAROLINA
Prepared For:
Mr. Henry Ward
c/o Elixir Retail Partners, LLC
Loden Properties
1207 Front Street, Suite 100
Raleigh, North Carolina 27609
Prepared By:
Mid -Atlantic Associates, Inc.
409 Rogers View Court
Raleigh, North Carolina 27610
Mid -Atlantic Job No. OOOR2667.01
August 28, 2019
Mid Atlantic
�� Engineering & EnvwonMental SoiuLlOnS

46
Mid Atlantic
Engineering & Environmental Solutions
409 Rogers View Court
Raleigh, NC 27610
office 919.250.9918
facsimile 919.250.9950
- MAAONLINE.COM
SUB -SLAB AND INDOOR AIR ASSESSMENT REPORT
GATEWAY PLAZA
2427 CRABTREE BOULEVARD
RALEIGH, NORTH CAROLINA
BROWNFIELDS PROJECT NUMBER 19067-15-092
Mid -Atlantic Associates Job No. OOOR2667.01
Prepared For:
Mr. Henry Ward
c/o Elixir Retail Partners, LLC
Loden Properties
1207 Front Street, Suite 100
Raleigh, North Carolina 27609
August 28, 2019
Prepared By:
MID -ATLANTIC ASSOCIATES, INC.
Ruth Tull.
Staff Scientist
Katie Lippard
SeniorEraiect Ma
Darin McClure, P.E.
Principal Engineer
CAS( j
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
2.1 Soil Gas Sample Collection...............................................................................................2
2.1.1 Vapor Pin Installation Procedures...............................................................................2
2.1.2 Helium Leak Check Procedures.................................................................................2
2.1.3 Sample Collection Procedures....................................................................................2
2.2 Indoor Air Sample Collection.............................................................................................3
3.0 SUMMARY OF LABORATORY ANALYTICAL RESULTS.................................................3
3.1 Soil Gas Sampling Results................................................................................................3
3.2 Indoor Air Sampling Results..............................................................................................3
3.3 Risk Calculations...............................................................................................................4
4.0 QUALITY ASSURANCE......................................................................................................7
5.0 CONCLUSIONS...................................................................................................................7
DRAWINGS
Drawing 1 Topographic Site Map
Drawing 2 Sub -Slab Sample Location Map
Drawing 3 Indoor Air Sample Location Map
TABLES
Table 3.1 Summary of Sub -Slab Soil Gas Sample Analysis
Table 3.2 Summary of Indoor and Ambient Air Sample Analysis
APPENDICES
Appendix A
Photographic log of sample locations
Appendix B
Laboratory Analytical Report and Chain -of -Custody Record for
Sub -Slab Soil Gas Samples
Appendix C
Laboratory Analytical Report and Chain -of -Custody Record for
Indoor Air Samples
Appendix D
Sub -Slab Soil Gas Vapor Intrusion Non -Residential Risk Calculations
Appendix E
Sub -Slab Soil Gas Vapor Intrusion Residential Risk Calculations
Appendix F
Indoor Air Non -Residential Risk Calculations
Appendix G
Indoor Air Residential Risk Calculations
Appendix H
Adjusted Indoor Air Non -Residential Risk Calculations
Appendix I
Adjusted Indoor Air Residential Risk Calculations
IN Mid Atlantic

1.0 GENERAL INFORMATION
1.1 Introduction
The subject site consists of approximately 6.77-acres and is located at 2427 Crabtree
Boulevard in Raleigh, North Carolina (Drawing 1). The subject site is currently
undergoing parking lot upgrades and the renovating and re -tenanting of some spaces. As
part of this process, Elixir Retail Partners, LLC has identified a potential drop off day care
as a tenant in Space 1 — Little Makers Academy, depicted on Drawings 2 and 3. During
a recent site meeting with the Brownfields Program, it was determined that this use may
be approved if data shows that vapor intrusion is not a concern in and around the
proposed space. This Sub -Slab and Indoor Air Assessment Report is designed to fill gaps
in assessment data at the subject site identified by the Brownfields Program.
This report details the additional sub -slab and indoor air sampling activities conducted at
the site in June and July 2019. 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
Con -Test Analytical Laboratories
39 Spruce Street
East Longmeadow, Massachusetts 01028
[phone]
N.C. Certification No. 652
Contact: Ms. Kerry McGee
2.0 SUMMARY OF FIELD ACTIVITIES
The scope of work conducted as part of this vapor assessment was conducted in
accordance with the June 20, 2019 Sub -slab and Indoor Air Assessment Work Plan
prepared by Mid -Atlantic and approved by the North Carolina Department of Environmental
Quality (NCDEQ) Brownfields Program.
On June 28, 2019, Mid -Atlantic mobilized to the site to collect six primary sub -slab soil gas
samples and one duplicate sample. Mid -Atlantic returned to the subject site on July 24,
2019 to collect four primary indoor air samples and one duplicate sample. Field
observations during both sampling events note the spaces as nearly finished with walls
erected, doors and windows installed and closed, and HVAC units functional and in
operation. The floors were noted to be concrete slab and finishing products had not been
applied to the walls or floors at the time of sampling. A photograph log depicting the
Mid Atlantic

Sub -Slab and Indoor Air Assessment Report
Gateway Plaza
Raleigh, North Carolina
Brownfield Project Number 19067-15-092
August 28, 2019
Page 2
conditions of the spaces during sampling can be found in Appendix A. The sample
locations are shown on Drawings 2 and 3.
2.1 Soil Gas Sample Collection
A total of six interior sub -slab soil gas sampling points (SS-1 through SS-6) were installed
at the site to evaluate potential vapor encroachment conditions inside the spaces. The
approximate sample locations are shown on Drawing 2 and discussed below.
2.1.1 Vapor Pin Installation Procedures
Six sub -slab borings (SS-1 through SS-6) were advanced inside the onsite building in the
anticipated locations of Little Makers Academy (Space 1), Azure Violins (Space 2), and
2409-117 (Space 3) on June 28, 2019, to support the installation of vapor pins and collection
of sub -slab soil gas samples at these locations. The samples were collected from the
locations specified in the June 20, 2019 Sub -slab and Indoor Air Assessment Work Plan.
To create a sub -slab sampling port, a rotary -impact drill equipped with a decontaminated
spline drill bit was utilized to drill a 5/8-inch diameter hole through the concrete slab. The
concrete slab was approximately four inches thick and did not appear to have a gravel base
beneath the slab. Upon completion, a vapor sampling probe was established using a new
"Vapor Pin TM" which utilizes a brass barb fitting with a silicone sleeve to create a seal with
the concrete when inserted using an installation/extraction tool. The vapor pin was then fitted
with'/4-inch outer diameter rigid -wall tubing to complete the vapor sampling probe assembly.
Subsequent helium leak check and soil gas sampling activities are discussed below in
Sections 2.1.2 and 2.1.3, respectively.
2.1.2 Helium Leak Check Procedures
Upon completion of sample point construction activities, the points were purged and a leak
checked was performed at each probe location using a plastic shroud, helium gas and a
portable helium gas detector. A plastic shroud was placed over the soil gas sampling
location with the tubing of the probe exiting the shroud through a small hole. A 3-way valve
was placed on the probe termination and connected to the sampling apparatus. Helium
was released into the shroud via tubing from the cylinder into the shroud, and a grab sample
was collected by filling a Tedlar bag using the exhaust port of the purge syringe. Helium
monitoring indicated that there were no leaks detected in either sampling apparatus.
2.1.3 Sample Collection Procedures
After performing the helium leak check at each of the interior sub -slab soil gas sample
locations, six primary samples and one duplicate sample were collected using 1-liter
stainless steel canisters at a maximum flow rate of 100 ml/min. Upon collection, the soil
Mid Atlantic

Sub -Slab and Indoor Air Assessment Report
Gateway Plaza
Raleigh, North Carolina
Brownfield Project Number 19067-15-092
August 28, 2019
Page 3
gas samples were shipped to Con -Test Analytical Laboratories in East Longmeadow,
Massachusetts under proper chain of custody for analysis. The canisters were analyzed
in the laboratory for Volatile Organic Compounds (VOCs) according to EPA Method TO-
15.
2.2 Indoor Air Sample Collection
Five primary air samples were collected at the subject site: two from Space 1, one from
Space 2 , and one from Space 3, and one outdoor ambient air sample. One duplicate
sample was also collected from Space 1 for QA/QC purposes. The samples were collected
from the locations and heights specified in the June 20, 2019 Sub -slab and Indoor Air
Assessment Work Plan. The eight -hour Summa air samples were collected using batch
certified, 6-liter, stainless steel, Summa canisters at a maximum flow rate of 8-10 ml/min.
The six air samples were analyzed for VOCs using EPA Compendium Method TO-15 with
the analyte list limited to the constituents detected in the sub -slab soil gas samples and the
degradation products of those compounds. The approximate sample locations are shown
on Drawing 3.
3.0 SUMMARY OF LABORATORY ANALYTICAL RESULTS
3.1 Soil Gas Sampling Results
The laboratory analytical report and chain -of -custody record for soil gas samples collected
in June 2019 are provided in Appendix B and summarized in Table 3.1. The results of the
soil gas sampling activities were compared to the February 2018 Division of Waste
Management (DWM) Residential and Non -Residential Vapor Intrusion Soil Gas Screening
Levels (SGSLs) and a cumulative risk evaluation(s) performed. As summarized, several
VOCs were detected in each of the primary sub -slab soil gas samples and the duplicate
sub -slab soil gas sample at concentrations above laboratory method detection limits.
However, the VOC concentrations did not exceed the DWM Residential or Non -Residential
SGSLs. Please note the 1,2-dibromoethane (EDB) and 1,1,2-trichloroethane method
detection limits exceeded Residential VISLs for the Sub -Slab sample SS-1. Additional
discussion regarding risk calculations for the constituents detected in soil gas is provided
below in Section 3.3.
3.2 Indoor Air Sampling Results
The laboratory analytical report and chain -of -custody record for indoor air samples collected
in July 2019 are provided in Appendix C and summarized in Table 3.2. The results of the
indoor air sampling activities were compared to the February 2019 EPA Region 4
Residential and Non -Residential Vapor Intrusion (VI) Indoor Air Screening Levels (IASLs).
Mid Atlantic

Sub -Slab and Indoor Air Assessment Report
Gateway Plaza
Raleigh, North Carolina
Brownfield Project Number 19067-15-092
August 28, 2019
Page 4
As summarized, naphthalene and ethylbenzene were detected in all indoor air samples
exceeding Residential and Non -Residential IASLs. Naphthalene was also detected at a
concentration exceeding both the Residential and Non -Residential IASLs in the outdoor
Ambient Air Sample (AMB-1). Benzene was detected in indoor air samples IA-1, IA-2 and
IA-3, exceeding the Residential IASLs, but did not exceed the Non -Residential IASLs.
Xylenes m&p were detected in Indoor Air samples IA-1 through IA-4, exceeding the
Residential IASLs. The m&p-xylenes detected in IA-3 also exceeded Non -Residential
IASLs. The o-xylenes were detected in Indoor Air Samples IA-1 through IA-3 exceeding
Residential IASLs. The constituents ethylbenzene, dichlorodifluoromethane (freon 12),
heptane, naphthalene, m&p-xylenes and o-xylenes were each detected in greater
concentrations in indoor air samples than observed in the sub -slab soil gas samples.
Several other VOCs were detected in each of the primary indoor air samples and the
duplicate indoor air sample at concentrations above laboratory method detection limits
without exceeding Residential IASLs. Additional discussion regarding risk calculations for
the constituents detected in indoor air is provided below in Section 3.3.
3.3 Risk Calculations
The DWM establishes vapor intrusion SGSLs for individual compounds for both residential
and non-residential (industrial/commercial) exposure scenarios. The EPA Region 4
Residential and Non -Residential IASLs are established for individual compounds detected
in both residential and non-residential indoor air exposure scenarios. The North Carolina
Brownfields Program allows a maximum cumulative cancer risk for all carcinogens of 1.0E-
4 and a maximum cumulative hazard index (HI) of 1 for all non -carcinogens in soil gas and
indoor air'. Mid -Atlantic compared the sub -slab and indoor air sampling results to the DWM
Residential and Non -Residential SGSLs and the EPA Residential and Non -Residential
IASLs then calculated the cancer risk and non -cancer risk hazard quotient for each
compound detected above the laboratory reporting limit. Residential and Non -Residential
cumulative cancer risk and cumulative non -cancer hazard indexes were then determined
for each Sub -Slab soil gas sample (Appendices D and E). The Residential and Non -
Residential exposure cancer risk sums and non -cancer hazard indexes for the Sub -Slab soil
gas samples are summarized in the following table:
Division of Waste Management Vapor Intrusion Guidance Document. May 2019. Page 2.
ft Mid Atlantic

Sub -Slab and Indoor Air Assessment Report
Gateway Plaza
Raleigh, North Carolina
Brownfield Project Number 19067-15-092
August 28, 2019
Page 5
Sub -Slab Soil Gas Risk Calculations
Sample ID
Non -Residential
Calculated
Carcinogenic
Risk Sum
Non -Residential
Cumulative Non-
Carcinogenic
Hazard Index
Residential
Calculated
Carcinogenic
Risk Sum
Residential
Cumulative Non -
Carcinogenic
Hazard Index
SS-1
2.8 x 10-8
8.2 x 10-3
4.6 x 10-7
1.0 x 10-'
SS-2
3.3 X 10-7
8.7 X 10-3
4.4 X 10-6
1.1 X 10-'
SS-2 Duplicate
1.3 X 10-7
6.5 X 10-3
1.8 X 10-6
8.2 x 10-2
SS-3
1.6 x 10-7
5.2 x 10-3
2.0 X 10-6
6.6 X 10-2
SS-4
1.2 x 10-7
5.3 x 10-3
1.6 x 10-6
6.7 X 10-2
SS-5
2.0 X 10-7
1.2 X 10-2
2.7 X 10-6
1.5 x 10-'
SS-6
1.5 x 10-7
1.2 X 10-2
2.0 X 10-6
1.5 x 10-'
As indicated, the cancer risk sums and cumulative non -cancer hazard indexes for soil gas
samples SS-1 through SS-6 did not exceed the target risk sum of 1.0E-4, nor the target
cumulative non -cancer hazard index of 1, for either the residential or non-residential
exposure scenarios.
Residential and Non -Residential cancer risk sums and cumulative non -cancer hazard
indexes were then calculated for each Indoor and Ambient air sample (Appendices F and
G). The Residential and Non -Residential exposure cancer risk sums and non -cancer hazard
indexes for the Indoor and Ambient air samples are summarized in the following table:
Indoor Air Risk Calculations
Sample ID
Non -Residential
Calculated
Carcinogenic
Risk Sum
Non -Residential
Cumulative Non-
Carcinogenic
Hazard Index
Residential
Calculated
Carcinogenic
Risk Sum
Residential
Cumulative Non -
Carcinogenic
Hazard Index
IA-1
2.7 x 10-5
9.2 x 10-1
1.2 X 10-4
3.9 X 10+0
IA-1 Duplicate
2.8 X 10-5
9.2 x 10-'
1.2 X 10-4
3.9 X 10+0
IA-2
2.6 x 10-5
8.9 x 10-'
1.1 X 10-4
3.7 X 10+0
IA-3
3.1 X 10-5
1.1 x 10+0
1.3 X 10-4
4.6 X 10+0
IA-4
2.3 x 10-5
7.6 X 10-'
1.0 X 10-4
3.2 X 10+0
AMB-1
2.0 X 10-6
5.9 x 10-2
8.7 X 10-6
2.5 X 10-'
As indicated, the residential cumulative non -carcinogenic hazard index as well as residential
carcinogenic risk sums for all Indoor Air samples (IA-1, IA-1 Duplicate, IA-2, IA-3, and IA-4
exceeded the target risk sum of 1.0E-4 and the target cumulative non -cancer hazard index
0 Mid Atlantic

Sub -Slab and Indoor Air Assessment Report
Gateway Plaza
Raleigh, North Carolina
Brownfield Project Number 19067-15-092
August 28, 2019
Page 6
of 1. The Non -Residential cumulative non -carcinogenic hazard index for Indoor Air sample
IA-3 also exceeded the target cumulative non -cancer hazard index of 1.
As discussed previously in Section 3.2, several constituents were detected with greater
concentrations in indoor air samples than observed in the sub -slab soil gas samples. In
addition, attenuation factors from sub -slab to indoor air for PCE ranged from 5.9 to 23.7
while the attenuation factors for naphthalene and ethylbenzene were below 1.0 (0.31 —
0.71). This confirms that the majority of the contributions for ethylbenzene,
dichlorodifluoromethane (freon 12), heptane, hexane, naphthalene, toluene, m&p-xylenes,
and o-xylenes are from indoor air sources and not from vapor intrusion. In order to account
for this scenario, an additional set of risk calculations were produced. In these modified risk
calculations, the sub -slab concentrations for the constituents detected with greater indoor
air than sub -slab concentrations were reduced by the lowest attenuation factor calculated
for PCE (5.9) to come up with a more realistic indoor air concentration attributable to vapor
intrusion. Residential and Non -Residential cumulative cancer risk sums and cumulative non -
cancer hazard indexes were then calculated using these adjusted values for each indoor air
sample (Appendices H and 1). The Residential and Non -Residential exposure cancer risk
sums and non -cancer hazard indexes for the Indoor and Ambient air samples are
summarized in the following table:
Adjusted Indoor Air Values Risk Calculations
Sample ID
Non -Residential
Calculated
Carcinogenic
Risk Sum
Non -Residential
Cumulative Non-
Carcinogenic
Hazard Index
Residential
Calculated
Carcinogenic
Risk Sum
Residential
Cumulative Non -
Carcinogenic
Hazard Index
IA-1
2.3 x 10-6
8.7 x 10-2
1.0 x 10-5
3.6 X 10-'
IA-1 Duplicate
2.3 x 10-6
9.1 x 10-2
1.0 x 10-5
3.8 X 10-'
IA-2
2.5 x 10-6
9.6 x 10-2
1.1 x 10-5
4.0 X 10-'
IA-3
2.5 x 10-6
1.1 x 10-'
1.1 x 10-5
4.5 X 10-'
IA-4
2.9 x 10-6
1.0 x 10-'
1.3 x 10-5
4.3 X 10-'
As indicated, the carcinogenic risk sums and cumulative non -carcinogenic hazard indexes
for all Indoor Air samples (IA-1, IA-1 Duplicate, IA-2, IA-3, and IA-4) 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 exposure scenarios.
0 Mid Atlantic

Sub -Slab and Indoor Air Assessment Report August 28, 2019
Gateway Plaza Page 7
Raleigh, North Carolina
Brownfield Project Number 19067-15-092
4.0 QUALITY ASSURANCE
One duplicate sub -slab and one duplicate indoor air sample were collected during
sampling activities. The duplicate samples were analyzed for EPA Compendium Method
TO-15 (Table 1). Mid -Atlantic filled each laboratory provided Summa canister such that
the final vacuum in the canister was at least three to four inches of mercury. The chain -
of -custody was completed in the field and packed with the samples. The Mid -Atlantic field
technician returned to the office with the packed boxes which were picked up by a Con -
Test courier. The courier then hand delivered the boxes to a national carrier for delivery
to the laboratory located in East Longmeadow, Massachusetts.
5.0 CONCLUSIONS
The overall objective of this assessment was to fill gaps in assessment data at the subject
site identified by the Brownfield Program to determine if a drop off day care facilty was an
appropriate use for the identified Space 1. Mid -Atlantic offers the following conclusions
based on the results of this assessment as they pertain to the subject site:
• Several constituents were detected in sub -slab soil gas samples at concentrations
above laboratory method detection limits, but below their respective DWM
Residential and Non -Residential SGSLs;
• Ethylbenzene and naphthalene were detected in both the primary and duplicate
indoor air samples collected at concentrations exceeding their respective EPA Non -
Residential IASLs;
• Several constituents were detected in indoor air samples at concentrations greater
than observed in sub -slab soil gas samples, including: ethylbenzene,
dichlorodifluoromethane (freon 12), heptane, naphthalene, m&p-xylenes and o-
xylenes. This points to indoor air contributions of these compounds;
• Attenuation factors for PCE ranged from 5.9 to 23.7, while attenuation factors for
naphthalene and ethylbenzene ranged from 0.31 to 0.71, confirming the indoor air
source contributions for various compounds;
• The Non -Residential cancer risk and Non -Residential cumulative non -cancer hazard
index for all sub -slab soil gas samples (SS-1, SS-2, SS-2 Duplicate, SS-3, SS-4, SS-
5 and SS-6) did not exceed the target risk sum of 1.0E-4, nor the target cumulative
non -cancer hazard index of 1;
• The Residential cancer risk and Residential cumulative non -cancer hazard index for
all sub -slab soil gas samples (SS-1, SS-2, SS-2 Duplicate, SS-3, SS-4, SS-5 and
SS-6) did not exceed the target risk sum of 1.0E-4, nor the target cumulative non -
cancer hazard index of 1;
IS Mid Atlantic

Sub -Slab and Indoor Air Assessment Report
Gateway Plaza
Raleigh, North Carolina
Brownfield Project Number 19067-15-092
August 28, 2019
Page 8
• The Residential cancer risk sums and Residential cumulative non -cancer hazard
index for indoor air samples (IA-1, IA-1 Duplicate, IA-2, IA-3, and IA-4) exceeded the
target risk sum of 1.0E-4, and the target cumulative non -cancer hazard index of 1 for
all sampled locations;
• The Non -Residential cancer risk and Non -Residential cumulative non -cancer hazard
index values were calculated for indoor air samples IA-1, IA-1 Duplicate, IA-2, IA-3,
and IA-4. None of the samples exceeded the carcinogenic target risk sum of 1.0E-
4, however, sample IA-3 did exceed the target cumulative non -cancer hazard index
of 1;
• When indoor air risk was evaluated using sub slab concentrations adjusted by the
most conservative attenuation factor calculated for PCE (5.9) and applied to those
constituents detected with greater indoor air than sub -slab concentrations,
carcinogenic risk sums and cumulative non -carcinogenic hazard indexes for all
indoor air samples (IA-1, IA-1 Duplicate, IA-2, IA-3, and IA-4) 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 exposure scenarios
As indicated, vapor intrusion risk calculations for the soil gas samples collected at the site
during this investigation did not exceed the cancer risk sum of 1.0E-4 or the cumulative
non -cancer hazard index of 1 for either the Residential or Non -Residential exposure
scenario. After calculating more realistic indoor air values for compounds that exhibited
higher concentrations in indoor air than in the sub -slab using the most conservative
attenuation factor calculated for PCE, risk calculations again did not exceed the cancer
risk sum of 1.0E-4 or the cumulative non -cancer hazard index of 1, for either the
Residential or Non -Residential exposure scenario. Based on the data collected during
this investigation, vapor intrusion does not appear to be causing an unacceptable risk in
the spaces tested. As such, it appears a drop-off day care should be approved use for
this part of the facility.
IS Mid Atlantic

DRAWINGS
IS Mid Atlantic

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

``
41
Af
Y
a
r 4
Calculated
Calculated Non-
SS-1 Carcinogenic Risk Carcinogenic Hazard
Quotient
Residential 4.6E-07 1.0E-01
Non -Residential 2.8E-08 I 8.2E-03
t
Calculated Non -
SS SS Calculated
SS-5 Carcinogenic Hazard
© SS ,. Carcinogenic Risk
f . Quotient
Q
Residential 2.7E 06 1.5E-01 S SS '!►
SS Non -Residential iq 2.0E-07 1.2E-02
17. 1 R x``
Legend Calculated Calculated Non -
Sub Slab Samples SS-2 Carcinogenic Risk Carcinogenic Hazard
d Subject Site Quotient
Residential 4.4E-06 1.1E-01
O Little Makers Academy �" Non -Residential 3.3xE-07 8.7E-03
O Azure Violins i"
© 2409-117
Notes: 1: No exceedances of the DWM Residential/Non-Residential
Soil Gas Screening Limits were identified u 1
Calculated Non-
Calculated
SS-3
Carcinogenic Hazard
Carcinogenic Risk
Quotient
Residential
2.0E-06
6.6E-02
Non -Residential
1.6E-07
5.2E-03
t �
Calculated Non-
Calculated
SS-4
Carcinogenic Hazard
Carcinogenic Risk
Quotient
Residential
1.6E-06
6.7E-02
Non -Residential
1.2E-07
5.3E-03
Calculated Non-
Calculated
SS-6
Carcinogenic Hazard
Carcinogenic Risk
Quotient
Residential 2.0E-06
1.5E-01
Non -Residential 1.5E-07
1.2E-02
Y
i� AM6 �m
80 160
Feet A
AWN BY: DATE: AUGUST 2019
AFT CHECK JOB NO.: 00OR2667.01
GINEER CHECK GISNO R1G2G-R266701-1
Engineering & Environmental Solutions
RALEIGH, NORTH CAROLINA APPROVEDBY DRAWING NO.: 2
REFERENCE: PARCEL, ROAD, AND WATER GIs DATA FROM WAKE COUNTY GIS. 2013 AERIAL IMAGERY FROM NC ONEMAP. MID -ATLANTIC FIELD NOTES.

Calculated
alculated
Naphthalene
Non-
AMB-1
Carcinogenic
(ug/m3)
Carcinogenic
Risk
Hazard Index
Sample
Results
0.67
2.0E-06
5.9E-02
dL-�,r
Benz
Adjusted Non
Adjusted
Adjusted
Residential
Residential
Residential
Residential
Benzene
Ethylbenzene
Naphthalene
0-Xylenes
M&PXylenes Calculated
Calculated
IA-3
(ug/m3)
(ug/m3)
(ug/m3)
(ug/m3)
Calculated
(ug/m3) Non-
Calculated
Non -
Carcinogenic
Carcinogenic
Risk Carcinogenic
Risk
Carcinogenic
Hazard Index
Hazard index
Sample
Results
0.39
14
30
36
88 2.5E-06 1.1E-01
1.1E-05
4.5E-01
t �
Adjusted Non
Adjusted Non
Adjusted
Adjusted
Residential
Residential
Residential
Residential
Benzene
Ethylbenzene
Naphthalene
O-Xylenes
M&P Xylenes
Calculated
Calculated
IA-2
(ug/m3)
(ug/m3)
(ug/m3)
(ug/m3)
(ug/m3)
Calculated
Non-
Calculated
Non -
Carcinogenic
Carcinogenic
Risk Carcinogenic
Risk
Carcinogenic
Hazard index
Hazard index
Sample
0.78
9.5
8.6
25
57
2.5E-06 9.6E-02
1.1E-05
4.0E-01 ^
Results
IA-1
Sample
Results
IT
l
�12
3
` w
Legend � �'�`. �'",�� \• � , ,,
d Subject Site *� . '.
Q Outdoor Air Sample Point
Indoor Air Sample Points , e ;� •.` r ;, i i
O Little Makers Academy
© Azure Violins
2409-117 0 80 16Feet�
Notes: 1: Unit of ug/m3 = Micrograms per Cubic Meter. '
2: Only exceedances of calculated EPA Region 4 Residential/Non-Residential Indoor Air Screening Limits (IASLs) are shown. `
3: Bold values exceed Non -Residential IASLs and risk concentrations
4: Underlined values exceed Residential IASLs and risk concentrations
i
Adjusted Non- Adjusted
Adjusted Non- Adjusted
Residential Reidential
Residential sResidential
ne Ethylbenzene Naphthalene O-Xylenes M&P Xylenes Calculated Calculated
(ug/m3) (ug/m3) (ug/m3) (ug/m3) (ug/m3) Calculated Non- Calculated Non -
Carcinogenic Carcinogenic
Risk Carcinogenic Risk Carcinogenic
Hazard Index Hazard Index
0.36 10 9.0 26 61 2.3E-06 8.7E-02 1.0E-05 3.6E-01
A N
Aft
A N
Aft
Sample
DATE: AUGUST 2019
JOB NO.: 00OR2667.01
GIS NO.: 1G2G-R2667.01-1
DRAWING NO.: 3
1�REFERENCE: PARCEL, ROAD, AND WATER GIS DATA FROM WAKE COUNTY GIS. 2013 AERIAL IMAGERY FROM NC ONEMAP. MID -ATLANTIC FIELD NOTESPARCEL, ROAD, AND WATER GIS DATA FROM WAKE COUNTY GIS. 2013 AERIAL IMAGERY FROM NC ONEMAP. MID -ATLANTIC FIELD NOTES.

TABLES
IS Mid Atlantic

Parameter
DWM
Residential Vapor
Intrusion
Screening Levels
DWM
Non -Residential
Vapor Intrusion
Screening Levels
TABLE 3.1
GATEWAY PLAZA
R2667.01
SUBSLAB SOIL GAS SAMPLE ANALYSIS
Residential Soil-
Gas ug/m3
Non -Residential
Soil -Gas ug/m3
SS-1
SS-2
Duplicate SS-2d
SS-3
SS-4
SS-5
SS-6
Sampling Date
6/28/2019 10:31 AM
6/28/2019 11:00 AM
6/28/2019 11:06 AM
6/28/2019 11:43 AM
6/28/2019 11:27 AM
6/28/2019 9:35 AM
6/28/2019 10:05 AM
EPA TO-15
Acetone
220000
2700000
940
50
42
100
78
80
53
Benzene
120
1600
ND (1.3)
3.4
1.9
3.5
2.8
2.7
2.2
Benzyl Chloride
7
88
ND (1.1)
ND (0.23)
ND (0.23)
ND (0.23)
ND (0.23)
ND (0.23)
ND (0.23)
Bromodichloromethane
25
330
ND (2.5)
ND (0.49)
ND (0.49)
ND (0.49)
ND (0.49)
ND (0.49)
ND (0.49)
Bromoform
850
11000
ND (4.7)
ND (0.93)
ND (0.93)
ND (0.93)
ND (0.93)
ND (0.93)
ND (0.93)
Bromomethane
35
440
ND (2.7)
ND (0.53)
ND (0.53)
ND (0.53)
ND (0.53)
ND (0.53)
ND (0.53)
1,3-Butadiene
14
180
ND (1.4)
ND (0.28)
ND (0.28)
ND (0.28)
ND (0.28)
ND (0.28)
ND (0.28)
2-Butanone (MEK)
35000
440000
150
9.5 J
9.7 J
18 J
12 J
24
111
Carbon Disulfide
4900
61000
ND (2.1)
ND (0.43)
ND (0.43)
ND (0.43)
ND (0.43)
ND (0.43)
6.9
Carbon Tetrachloride
160
2000
ND (2.1)
ND (0.41)
ND (0.41)
ND (0.41)
ND (0.41)
ND (0.41)
ND (0.41)
Chlorobenzene
350
4400
ND (2.3)
ND (0.45)
ND (0.45)
ND (0.45)
ND (0.45)
ND (0.45)
ND (0.45)
Chloroethane
70000
880000
ND (1.6)
ND (0.32)
ND (0.32)
ND (0.32)
ND (0.32)
ND (0.32)
ND (0.32)
Chloroform
41
530
ND (1.8)
ND (0.36)
ND (0.36)
ND (0.36)
ND (0.36)
ND (0.36)
ND (0.36)
Chloromethane
630
7900
ND (1.4)
ND (0.28)
ND (0.28)
ND (0.28)
ND (0.28)
ND (0.28)
ND (0.28)
Cyclohexane
42000
530000
ND (2.4)
ND (0.49)
ND (0.49)
ND (0.49)
ND (0.49)
ND (0.49)
ND (0.49)
Dibromochloromethane
-
-
ND (2.8)
ND (0.57)
ND (0.57)
ND (0.57)
ND (0.57)
ND (0.57)
ND (0.57)
1,2-Dibromoethane (EDB)
1.6
20
ND (3.0)*
ND (0.60)
ND (0.60)
ND (0.60)
ND (0.60)
ND (0.60)
ND (0.60)
1,2-Dichlorobenzene
1400
18000
ND (2.9)
ND (0.58)
ND (0.58)
ND (0.58)
ND (0.58)
ND (0.58)
ND (0.58)
1,3-Dichlorobenzene
-
-
ND (3.1)
1.5
1.8
2.5
ND (0.62)
3.3
3.7
1,4-Dichlorobenzene
85
1100
ND (3.7)
ND (0.73)
ND (0.73)
ND (0.73)
ND (0.73)
ND (0.73)
ND (0.73)
Dichlorodifluoromethane (Freon 12)
700
8800
ND (2.1)
1.3
ND (0.43)
1.7
1.4
1.4
1.4
1,1-Dichloroethane
580
7700
ND (1.2)
ND (0.25)
ND (0.25)
ND (0.25)
ND (0.25)
ND (0.25)
ND (0.25)
1,2-Dichloroethane
36
470
ND (1.5)
ND (0.31)
ND (0.31)
ND (0.31)
ND (0.31)
ND (0.31)
ND (0.31)
1,1-Dichloroethylene
1400
18000
ND (1.6)
ND (0.32)
ND (0.32)
ND (0.32)
ND (0.32)
ND (0.32)
ND (0.32)
cis-1,2-Dichloroethylene
-
-
ND (1.6)
ND (0.32)
ND (0.32)
ND (0.32)
ND (0.32)
ND (0.32)
ND (0.32)
trans-1,2-Dichloroethylene
-
-
ND (1.6)
ND (0.32)
ND (0.32)
ND (0.32)
ND (0.32)
ND (0.32)
ND (0.32)
1,2-Dichloropropene
28
350
ND (1.6)
ND (0.33)
ND (0.33)
ND (0.33)
ND (0.33)
ND (0.33)
ND (0.33)
cis-1,3-Dichloropropene
-
-
ND (1.6)
ND (0.32)
ND (0.32)
ND (0.32)
ND (0.32)
ND (0.32)
ND (0.32)
trans-1,3-Dichloropropene
ND (1.7)
ND (0.33)
ND (0.33)
ND (0.33)
ND (0.33)
ND (0.33)
ND (0.33)
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)
-
-
ND (3.5)
ND (0.70)
ND (0.70)
ND (0.70)
ND (0.70)
ND (0.70)
ND (0.70)
1,4-Dioxane
190
2500
ND (23)
ND (4.6)
ND (4.6)
ND (4.6)
ND (4.6)
ND (4.6)
ND (4.6)
Ethanol
-
-
1200
84
60
120
95
49
29
Ethyl Acetate
490
6100
ND (2.7)
2.7
ND (0.54)
ND (0.54)
2.5
2.9
ND (0.54)
Ethylbenzene
370
4900
4.9
6.4
4.3
6.3
6.1
4.4
3.8
4-Ethyltoluene
-
-
ND (3.0)
3.8
2.5
ND (0.60)
2.9
2.9
2.5
Heptane
2800
35000
ND (2.4)
2.5
1.3
ND (0.48)
1.8
2.1
1.3
Hexachlorobutadiene
43
560
ND (4.9)
ND (0.98)
ND (0.98)
ND (0.98)
ND (0.98)
ND (0.98)
ND (0.98)
Hexane
4900
61000
ND (6.2)
3.9 J
ND (1.2)
3.6 J
2.1 J
1.9 J
ND (1.2)
2-Hexanone (MBK)
210
2600
ND (2.4)
ND (0.48)
ND (0.48)
ND (0.48)
ND (0.48)
ND (0.48)
ND (0.48)
Isopropanol
1400
18000
120
111
9.6 J
12 J
101
4.6 J
4.1 J
Methyl tert-Butyl Ether (MTBE)
3600
47000
ND (1.8)
ND (0.36)
ND (0.36)
ND (0.36)
ND (0.36)
ND (0.36)
ND (0.36)
Methylene Chloride
4200
53000
ND (4.2)
0.93 J
1.3 J
1.5 J
1.6 J
0.93 J
ND (0.84)
4-Methyl-2-pentanone (MIBK)
21000
260000
ND (2.0)
ND (0.39)
ND (0.39)
ND (0.39)
ND (0.39)
ND (0.39)
ND (0.39)
Naphthalene
21
260
ND (4.0)
3.5
3.7
4.3
3.1
5.4
3.6
Propene
21000
260000
ND (1.7)
ND (0.34)
ND (0.34)
ND (0.34)
ND (0.34)
ND (0.34)
ND (0.34)
Styrene
7000
88000
4.9
6.2
4.3
5.6
5.4
4.8
4.4
1,1,2,2-Tetrachloroethane
16
210
ND (3.0)
ND (0.61)
ND (0.61)
ND (0.61)
ND (0.61)
ND (0.61)
ND (0.61)
Tetrachloroethylene
280
3500
14
9.8
13
7.7
26
18
14
Tetrahydrofuran
14000
180000
ND (2.0)
5.8
4.7
15
19
13
6.5
Toluene
35000
440000
54
63
47
74
63
73
39
1,2,4-Trichlorobenzene
14
180
ND (5.1)
ND (1.0)
ND (1.0)
ND (1.0)
ND (1.0)
ND (1.0)
ND (1.0)
1,1,1-Trichloroethane
35000
440000
ND (2.0)
ND (0.41)
ND (0.41)
ND (0.41)
ND (0.41)
ND (0.41)
ND (0.41)
1,1,2-Trichloroethane
1.4
18
ND (2.2)*
ND (0.45)
ND (0.45)
ND (0.45)
ND (0.45)
ND (0.45)
ND (0.45)
Trichloroethylene
14
180
4.6.1
1.3
1.7
ND (0.43)
ND (0.43)
4.8
6.3
Trichlorofluoromethane
-
-
62
39
43
38
39
34
42
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
35000
440000
ND (4.6)
ND (0.93)
ND (0.93)
ND (0.93)
ND (0.93)
1.11
ND (0.93)
1,2,4-Trimethyl benzene
420
5300
ND (3.1)
ND (0.63)
ND (0.63)
ND (0.63)
ND (0.63)
ND (0.63)
ND (0.63)
1,3,5-Trimethyl benzene
420
5300
ND (3.1)
2.9
2.1
2.6
2.2
2.5
2.0
Vinyl Acetate
1400
18000
ND (1.7)
ND (0.34)
ND (0.34)
ND (0.34)
ND (0.34)
ND (0.34)
ND (0.34)
Vinyl Chloride
56
2800
ND (1.6)
ND (0.32)
ND (0.32)
ND (0.32)
ND (0.32)
ND (0.32)
ND (0.32)
Xylene, m&p
700
8800
21
30
20
30
28
20
18
X lene, o-
700
8800
6.7
9.6
6.2
8.7
8.2
6.5
5.5
NOTES:
Results are cmpared to the NCDEQ DWM residential/non residential soil gas screening levels (Febuary 2018)
1. ND = Not detected above the lab reporting limits shown in parenthesis.
2. - = No DWM Residential or Non -Residential screening limits established.
3. Underlined values exceed the DWM Residential Indoor Air Screening Limits.
4. Bold values exceed the DWM Non -Residential Indoor Air Screening Limits.
5. * Asterisk indicates the lab reporting limits are greater than the residential Residential Vapor Intrusion Screening Levels
6. ug/m3 = micrograms per cubic meter of air.

TABLE 3.2
Residential Vapor
Non -Residential
GATEWAY PLAZA
Parameter
Intrusion
Vapor Intrusion
R2667.01
Screening Levels
Screening Levels
INDOOR AND AMBIENT AIR SAMPLE ANALYSIS
Target Indoor Air
Target Indoor Air
Concentration
Concentration
IA-1
Duplicate IA-1D
IA-2
IA-3
IA-4
AMB-1
ug/m3
ug/m3
Sampling Date
7/24/2019 16:54
7/24/2019 16:44
7/24/2019 16:53
7/24/2019 16:56
7/24/2019 16:47
7/24/2019 16:44
EPA TO-15
Acetone
6440
27100
79
70
74
100
75
9.4
Benzene
0.36
1.57
0.36
0.34
0.78
0.39
0.32
0.22
2-Butanone (MEK)
1040
4380
120
94
74
140
140
ND (0.16)
Carbon Disulfide
146
613
ND (0.075)
ND (0.075)
ND (0.075)
ND (0.075)
ND (0.075)
ND (0.075)
1,3-Dichlorobenzene
-
-
ND (0.11)
ND (0.11)
ND (0.11)
ND (0.11)
ND (0.11)
ND (0.11)
Dichlorodifluoromethane (Freon 12)
20.9
87.6
2.3
2.9
1.7
2.1
1.4
2.0
cis-1,2-Dichloroethylene
-
-
ND (0.057)
ND (0.057)
ND (0.057)
ND (0.057)
ND (0.057)
ND (0.057)
trans-1,2-Dichloroethylene
ND (0.056)
ND (0.056)
ND (0.056)
ND (0.056)
ND (0.056)
ND (0.056)
Ethanol
-
-
22
18
19
25
19
5.0
Ethyl Acetate
14.6
61.3
ND (0.094)
ND (0.094)
ND (0.094)
ND (0.094)
ND (0.094)
ND (0.094)
Ethylbenzene
1.12
4.91
10
9.7
9.5
14
7.8
ND (0.088)
4-Ethyltoluene
-
-
3.2
3.0
3.1
3.9
2.8
ND (0.11)
Heptane
83.4
350
5.6
5.5
5.5
8.9
3.8
0.20
Hexane
146
613
ND (0.22)
ND (0.22)
ND (0.22)
5.1
ND (0.22)
ND (0.22)
Isopropanol
41.7
175
ND (0.11)
4.6
7.7
6.2
ND (0.11)
ND (0.11)
Methylene Chloride
101
526
ND (0.15)
ND (0.15)
ND (0.15)
ND (0.15)
ND (0.15)
ND (0.15)
Naphthalene
0.0826
0.361
9.0
9.2
8.6
10
7.7
0.67
Styrene
209
876
ND (0.092)
ND (0.092)
ND (0.092)
ND (0.092)
ND (0.092)
ND (0.092)
Tetrachloroethylene
8.34
35
0.89
0.95
0.91
1.3
0.76
ND (0.13)
Tetrahydrofuran
417
1750
2.1
2.1
2.0
2.3
1.7
ND (0.069)
Toluene
1040
4380
61
62
61
150
31
1.1
Trichlorofluoromethane
-
-
2.4
2.3
2.2
3.2
2.1
1.0
1,3,5-Trimethylbenzene
12.5
52.6
2.1
2.0
2.0
2.5
2.0
ND (0.11)
Xylene, m&p
20.9
87.6
61
59
57
88
45
0.41
X lene, o-
20.9
87.6
26
25
25
36
19
0.18
NOTES:
1. ND = Not detected above the lab reporting limits shown in parenthesis.
2. - = No Calculated Residential or Non -Residential EPA Screening levels established.
3. Underlined values exceed the Calculated Residential EPA Indoor Air Screening Levels.
4. Bold values exceed the Calculated Non -Residential EPA Indoor Air Screening Levels.
5. ug/m3 = micrograms per cubic meter of air.

APPENDIX A
LABORATORY ANALYTICAL REPORT
AND CHAIN -OF -CUSTODY RECORD FOR
SUB -SLAB SOIL GAS SAMPLES
IS Mid Atlantic

icon-tes w .
ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
July 15, 2019
Dan Nielsen
Mid -Atlantic Associates, Inc. - Raleigh, NC
409 Rogers View Court
Raleigh, NC 27610
Project Location: Gateway
Client Job Number:
Project Number: R2667.01
Laboratory Work Order Number: 19G0004
Enclosed are results of analyses for samples received by the laboratory on June 28, 2019. If you have any questions concerning
this report, please feel free to contact me.
Sincerely,
I,&, �. A��
Kerry K. McGee
Project Manager
QA Officer
Katherine Allen
Laboratory Manager
Daren Damboragian
Page 1 of 39

icon-tes w .
ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
Mid -Atlantic Associates, Inc. - Raleigh, NC REPORT DATE: 7/15/2019
409 Rogers View Court
Raleigh, NC 27610 PURCHASE ORDER NUMBER:
ATTN: Dan Nielsen
PROJECT NUMBER: R2667.01
ANALYTICAL SUMMARY
WORK ORDER NUMBER: 19G0004
The results of analyses performed on the following samples submitted to the CON -TEST Analytical Laboratory are found in this report.
PROJECT LOCATION: Gateway
FIELD SAMPLE # LAB ID: MATRIX SAMPLE DESCRIPTION TEST SUB LAB
SS-5
SS-6
SS-1
SS-2
SS-2d
SS-4
SS-3
Unused Can #2247/ Unused Reg #4107
19G0004-01
Sub Slab
EPATO-15
19G0004-02
Sub Slab
EPATO-15
19G0004-03
Sub Slab
EPATO-15
19G0004-04
Sub Slab
EPA TO-15
19G0004-05
Sub Slab
EPATO-15
19G0004-06
Sub Slab
EPATO-15
19G0004-07
Sub Slab
EPATO-15
19G0004-08
Sub Slab
Page 2 of 39

icon-tes w .
ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
CASE NARRATIVE SUMMARY
All reported results are within defined laboratory quality control objectives unless listed below or otherwise qualified in this report.
Page 3 of 39

icon-tes w .
ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
EPA TO-15
Qualifications:
Laboratory fortified blank /laboratory control sample recovery outside of control limits. Data validation is not affected since all results are
"not detected" for all samples in this batch for this compound and bias is on the high side.
Analyte & Samples(s) Qualified:
Benzyl chloride, Vinyl Acetate
B235524-BS1, B235552-BS I
Laboratory fortified blank/laboratory control sample recovery is outside of control limits. Reported value for this compound is likely to be
biased on the low side.
Analyte & Samples(s) Qualified:
Chloromethane, Dichlorodifluoromethane (Freon 12)
19G0004-01[SS-5], 19G0004-02[SS-6], 19G0004-03[SS-1], 19G0004-04[SS-2], 19G0004-05[SS-2d], 19G0004-06[SS-4], 19G0004-07[SS-3], B235524-BLKI,
B235524-BS1, B235552-BLKI, B235552-BSI
Elevated reporting limit due to high concentration of target compounds.
Analyte & Samples(s) Qualified:
19G0004-03 [SS-1 ]
Continuing calibration verification (CCV) did not meet method specifications and was biased on the low side for this compound.
Analyte & Samples(s) Qualified:
1,2,4-Trichlorobenzene, Chloromethane, Dichlorodifluoromethane (Freon 12), Naphthalene, Propene
19G0004-01[SS-5], 19G0004-02[SS-6], 19G0004-03[SS-1], 19G0004-04[SS-2], 19G0004-05[SS-2d], 19G0004-06[SS-4], B235524-BLKI, B235524-BSI, S038082-CCVI,
19G0004-07[SS-3], B235552-BLKI, B235552-BSI, S038102-CCVI
Continuing calibration verification (CCV) did not meet method specifications and was biased on the high side. Data validation is not affected
since sample result was "not detected" for this compound.
Analyte & Samples(s) Qualified:
Vinyl Acetate
S038082-CCVI, S038102-CCVI
Initial calibration verification (ICV) did not meet method specifications and was biased on the high side. Data validation is not affected since
sample result was 'hot detected" for this compound.
Analyte & Samples(s) Qualified:
Vinyl Acetate
B235524-BS1, B235552-BSI, S038102-CCVI
Compound fails the method requirement of 70-l3O% recovery for the LCS. Is classified by the lab as a difficult compound and passes the in
house limits of 50-150%.
Analyte & Samples(s) Qualified:
Propene
19G0004-01[SS-5], 19G0004-02[SS-6], 19G0004-03[SS-1], 19G0004-04[SS-2], 19G0004-05[SS-2d], 19G0004-06[SS-4], 19G0004-07[SS-3], B235524-BLKI,
B235524-BSI, B235552-BLKI, B235552-BSI
Page 4 of 39

icon-tes w .
ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
The results of analyses reported only relate to samples submitted to the Con -Test Analytical Laboratory for testing.
I certify that the analyses listed above, unless specifically listed as subcontracted, if any, were performed under my direction according to the approved methodologies listed
in this document, and that based upon my inquiry of those individuals immediately responsible for obtaining the information, the material contained in this report is, to the
best of my knowledge and belief, accurate and complete.
d�
Lisa A. Worthington
Technical Representative
Page 5 of 39

icon-tes w .
ANALYTICAL LABORATORY
Project Location: Gateway
Date Received: 6/28/2019
Field Sample #: SS-5
Sample ID: 19G0004-01
Sample Matrix: Sub Slab
Sampled: 6/28/2019 09:35
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Sample Description/Location: Work Order: 19G0004
Sub Description/Location: Initial Vacuum(in Hg): -26.5
Canister ID: 2237 Final Vacuum(in Hg): -2
Canister Size: 1 liter Receipt Vacuum(in Hg): -3.9
Flow Controller ID: 4192 Flow Controller Type: Fixed -Orifice
Sample Type: 5 min Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv
ug/m3
Date/Time
Analyte
Results
RL
MDL
Flag/Qual
Results
ILL
MDL
Dilution
Analyzed
Analyst
Acetone
34
8.0
2.8
80
19
6.6
4
7/13/19 22:26
BRF
Benzene
0.85
0.20
0.082
2.7
0.64
0.26
4
7/13/19 22:26
BRF
Benzyl chloride
ND
0.20
0.044
ND
1.0
0.23
4
7/13/19 22:26
BRF
Bromodichloromethane
ND
0.20
0.074
ND
1.3
0.49
4
7/13/19 22:26
BRF
Bromoform
ND
0.20
0.090
ND
2.1
0.93
4
7/13/19 22:26
BRF
Bromomethane
ND
0.20
0.14
ND
0.78
0.53
4
7/13/19 22:26
BRF
1,3-Butadiene
ND
0.20
0.13
ND
0.44
0.28
4
7/13/19 22:26
BRF
2-Butanone (MEK)
8.1
8.0
0.31
24
24
0.92
4
7/13/19 22:26
BRF
Carbon Disulfide
ND
2.0
0.14
ND
6.2
0.43
4
7/13/19 22:26
BRF
Carbon Tetrachloride
ND
0.20
0.065
ND
1.3
0.41
4
7/13/19 22:26
BRF
Chlorobenzene
ND
0.20
0.098
ND
0.92
0.45
4
7/13/19 22:26
BRF
Chloroethane
ND
0.20
0.12
ND
0.53
0.32
4
7/13/19 22:26
BRF
Chloroform
ND
0.20
0.074
ND
0.98
0.36
4
7/13/19 22:26
BRF
Chloromethane
ND
0.40
0.14
L-03
ND
0.83
0.28
4
7/13/19 22:26
BRF
Cyclohexane
ND
0.20
0.14
ND
0.69
0.49
4
7/13/19 22:26
BRF
Dibromochloromethane
ND
0.20
0.066
ND
1.7
0.57
4
7/13/19 22:26
BRF
1,2-Dibromoethane (EDB)
ND
0.20
0.078
ND
1.5
0.60
4
7/13/19 22:26
BRF
1,2-Dichlorobenzene
ND
0.20
0.096
ND
1.2
0.58
4
7/13/19 22:26
BRF
1,3-Dichlorobenzene
0.56
0.20
0.10
3.3
1.2
0.62
4
7/13/19 22:26
BRF
1,4-Dichlorobenzene
ND
0.20
0.12
ND
1.2
0.73
4
7/13/19 22:26
BRF
Dichlorodifluoromethane (Freon 12)
0.28
0.20
0.087
V-05, L-03
1.4
0.99
0.43
4
7/13/19 22:26
BRF
1, 1 -Dichloroethane
ND
0.20
0.061
ND
0.81
0.25
4
7/13/19 22:26
BRF
1,2-Dichloroethane
ND
0.20
0.076
ND
0.81
0.31
4
7/13/19 22:26
BRF
1, 1 -Dichloroethylene
ND
0.20
0.081
ND
0.79
0.32
4
7/13/19 22:26
BRF
cis-1,2-Dichloroethylene
ND
0.20
0.082
ND
0.79
0.32
4
7/13/19 22:26
BRF
trans-1,2-Dichloroethylene
ND
0.20
0.081
ND
0.79
0.32
4
7/13/19 22:26
BRF
1,2-Dichloropropane
ND
0.20
0.071
ND
0.92
0.33
4
7/13/19 22:26
BRF
cis- 1,3 -Dichloropropene
ND
0.20
0.070
ND
0.91
0.32
4
7/13/19 22:26
BRF
trans- 1, 3 -Dichloropropene
ND
0.20
0.073
ND
0.91
0.33
4
7/13/19 22:26
BRF
1,2-Dichloro- 1, 1,2,2-tetrafluoroethane (Freon 114) ND
0.20
0.10
ND
1.4
0.70
4
7/13/19 22:26
BRF
1,4-Dioxane
ND
2.0
1.3
ND
7.2
4.6
4
7/13/19 22:26
BRF
Ethanol
26
8.0
3.6
49
15
6.7
4
7/13/19 22:26
BRF
Ethyl Acetate
0.82
0.20
0.15
2.9
0.72
0.54
4
7/13/19 22:26
BRF
Ethylbenzene
1.0
0.20
0.12
4.4
0.87
0.50
4
7/13/19 22:26
BRF
4-Ethyltoluene
0.59
0.20
0.12
2.9
0.98
0.60
4
7/13/19 22:26
BRF
Heptane
0.50
0.20
0.12
2.1
0.82
0.48
4
7/13/19 22:26
BRF
Hexachlorobutadiene
ND
0.20
0.092
ND
2.1
0.98
4
7/13/19 22:26
BRF
Hexane
0.54
8.0
0.35
J
1.9
28
1.2
4
7/13/19 22:26
BRF
2-Hexanone (MBK)
ND
0.20
0.12
ND
0.82
0.48
4
7/13/19 22:26
BRF
Isopropanol
1.9
8.0
0.25
J
4.6
20
0.60
4
7/13/19 22:26
BRF
Methyl tert-Butyl Ether (MTBE)
ND
0.20
0.10
ND
0.72
0.36
4
7/13/19 22:26
BRF
Methylene Chloride
0.27
2.0
0.24
J
0.93
6.9
0.84
4
7/13/19 22:26
BRF
4-Methyl-2-pentanone (MIBK)
ND
0.20
0.096
ND
0.82
0.39
4
7/13/19 22:26
BRF
Naphthalene
1.0
0.20
0.15
V-05
5.4
1.0
0.80
4
7/13/19 22:26
BRF
Propene
ND
8.0
0.20
V-05, Z-01
ND
14
0.34
4
7/13/19 22:26
BRF
Styrene
1.1
0.20
0.12
4.8
0.85
0.53
4
7/13/19 22:26
BRF
1,1,2,2-Tetrachloroethane
ND
0.20
0.089
ND
1.4
0.61
4
7/13/19 22:26
BRF
Page 6 of 39

icon-tes w .
ANALYTICAL LABORATORY
Project Location: Gateway
Date Received: 6/28/2019
Field Sample #: SS-5
Sample ID: 19G0004-01
Sample Matrix: Sub Slab
Sampled: 6/28/2019 09:35
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Sample Description/Location:
Sub Description/Location:
Canister ID: 2237
Canister Size: 1 liter
Flow Controller ID: 4192
Sample Type: 5 min
Work Order: 19G0004
Initial Vacuum(in Hg): -26.5
Final Vacuum(in Hg): -2
Receipt Vacuum(in Hg): -3.9
Flow Controller Type: Fixed -Orifice
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv ug/m3 Date/Time
Analyte Results RL MDL Flag/Qual Results RL MDL Dilution Analyzed Analyst
Tetrachloroethylene
2.6
0.20
0.11
18
1.4
0.75
4
7/13/19 22:26
BRF
Tetrahydrofuran
4.4
0.20
0.13
13
0.59
0.39
4
7/13/19 22:26
BRF
Toluene
19
0.20
0.10
73
0.75
0.39
4
7/13/19 22:26
BRF
1,2,4-Trichlorobenzene
ND
0.20
0.14
V-05 ND
1.5
1.0
4
7/13/19 22:26
BRF
1, 1, 1 -Trichloroethane
ND
0.20
0.075
ND
1.1
0.41
4
7/13/19 22:26
BRF
1,1,2-Trichloroethane
ND
0.20
0.082
ND
1.1
0.45
4
7/13/19 22:26
BRF
Trichloroethylene
0.89
0.20
0.081
4.8
1.1
0.43
4
7/13/19 22:26
BRF
Trichlorofluoromethane (Freon 11)
6.0
0.80
0.12
34
4.5
0.65
4
7/13/19 22:26
BRF
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
0.15
0.80
0.12
J 1.1
6.1
0.93
4
7/13/19 22:26
BRF
1,2,4-Trimethylbenzene
ND
0.20
0.13
ND
0.98
0.63
4
7/13/19 22:26
BRF
1,3,5-Trimethylbenzene
0.51
0.20
0.13
2.5
0.98
0.62
4
7/13/19 22:26
BRF
Vinyl Acetate
ND
4.0
0.095
ND
14
0.34
4
7/13/19 22:26
BRF
Vinyl Chloride
ND
0.20
0.13
ND
0.51
0.32
4
7/13/19 22:26
BRF
m&p-Xylene
4.5
0.40
0.23
20
1.7
1.00
4
7/13/19 22:26
BRF
o-Xylene
1.5
0.20
0.12
6.5
0.87
0.54
4
7/13/19 22:26
BRF
Surrogates
4-Bromofluorobenzene (1)
% Recovery
92.1
% REC Limits
70-130
7/13/19 22:26
Page 7 of 39

icon-tes w .
ANALYTICAL LABORATORY
Project Location: Gateway
Date Received: 6/28/2019
Field Sample #: SS-6
Sample ID: 19G0004-02
Sample Matrix: Sub Slab
Sampled: 6/28/2019 10:05
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Sample Description/Location: Work Order: 19G0004
Sub Description/Location: Initial Vacuum(in Hg): -28
Canister ID: 2241 Final Vacuum(in Hg): -1
Canister Size: 1 liter Receipt Vacuum(in Hg): -2.1
Flow Controller ID: 4201 Flow Controller Type: Fixed -Orifice
Sample Type: 5 min Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv
ug/m3
Date/Time
Analyte
Results
RL
MDL
Flag/Qual
Results
RL
MDL
Dilution
Analyzed
Analyst
Acetone
22
8.0
2.8
53
19
6.6
4
7/13/19 23:06
BRF
Benzene
0.69
0.20
0.082
2.2
0.64
0.26
4
7/13/19 23:06
BRF
Benzyl chloride
ND
0.20
0.044
ND
1.0
0.23
4
7/13/19 23:06
BRF
Bromodichloromethane
ND
0.20
0.074
ND
1.3
0.49
4
7/13/19 23:06
BRF
Bromoform
ND
0.20
0.090
ND
2.1
0.93
4
7/13/19 23:06
BRF
Bromomethane
ND
0.20
0.14
ND
0.78
0.53
4
7/13/19 23:06
BRF
1,3-Butadiene
ND
0.20
0.13
ND
0.44
0.28
4
7/13/19 23:06
BRF
2-Butanone (MEK)
3.6
8.0
0.31
J
11
24
0.92
4
7/13/19 23:06
BRF
Carbon Disulfide
2.2
2.0
0.14
6.9
6.2
0.43
4
7/13/19 23:06
BRF
Carbon Tetrachloride
ND
0.20
0.065
ND
1.3
0.41
4
7/13/19 23:06
BRF
Chlorobenzene
ND
0.20
0.098
ND
0.92
0.45
4
7/13/19 23:06
BRF
Chloroethane
ND
0.20
0.12
ND
0.53
0.32
4
7/13/19 23:06
BRF
Chloroform
ND
0.20
0.074
ND
0.98
0.36
4
7/13/19 23:06
BRF
Chloromethane
ND
0.40
0.14
L-03
ND
0.83
0.28
4
7/13/19 23:06
BRF
Cyclohexane
ND
0.20
0.14
ND
0.69
0.49
4
7/13/19 23:06
BRF
Dibromochloromethane
ND
0.20
0.066
ND
1.7
0.57
4
7/13/19 23:06
BRF
1,2-Dibromoethane (EDB)
ND
0.20
0.078
ND
1.5
0.60
4
7/13/19 23:06
BRF
1,2-Dichlorobenzene
ND
0.20
0.096
ND
1.2
0.58
4
7/13/19 23:06
BRF
1,3-Dichlorobenzene
0.61
0.20
0.10
3.7
1.2
0.62
4
7/13/19 23:06
BRF
1,4-Dichlorobenzene
ND
0.20
0.12
ND
1.2
0.73
4
7/13/19 23:06
BRF
Dichlorodifluoromethane (Freon 12)
0.28
0.20
0.087
L-03, V-05
1.4
0.99
0.43
4
7/13/19 23:06
BRF
1,1-Dichloroethane
ND
0.20
0.061
ND
0.81
0.25
4
7/13/19 23:06
BRF
1,2-Dichloroethane
ND
0.20
0.076
ND
0.81
0.31
4
7/13/19 23:06
BRF
1,1-Dichloroethylene
ND
0.20
0.081
ND
0.79
0.32
4
7/13/19 23:06
BRF
cis-1,2-Dichloroethylene
ND
0.20
0.082
ND
0.79
0.32
4
7/13/19 23:06
BRF
trans-1,2-Dichloroethylene
ND
0.20
0.081
ND
0.79
0.32
4
7/13/19 23:06
BRF
1,2-Dichloropropane
ND
0.20
0.071
ND
0.92
0.33
4
7/13/19 23:06
BRF
cis- 1,3 -Dichloropropene
ND
0.20
0.070
ND
0.91
0.32
4
7/13/19 23:06
BRF
trans- 1, 3 -Dichloropropene
ND
0.20
0.073
ND
0.91
0.33
4
7/13/19 23:06
BRF
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114) ND
0.20
0.10
ND
1.4
0.70
4
7/13/19 23:06
BRF
1,4-Dioxane
ND
2.0
1.3
ND
7.2
4.6
4
7/13/19 23:06
BRF
Ethanol
15
8.0
3.6
29
15
6.7
4
7/13/19 23:06
BRF
Ethyl Acetate
ND
0.20
0.15
ND
0.72
0.54
4
7/13/19 23:06
BRF
Ethylbenzene
0.88
0.20
0.12
3.8
0.87
0.50
4
7/13/19 23:06
BRF
4-Ethyltoluene
0.51
0.20
0.12
2.5
0.98
0.60
4
7/13/19 23:06
BRF
Heptane
0.31
0.20
0.12
1.3
0.82
0.48
4
7/13/19 23:06
BRF
Hexachlorobutadiene
ND
0.20
0.092
ND
2.1
0.98
4
7/13/19 23:06
BRF
Hexane
ND
8.0
0.35
ND
28
1.2
4
7/13/19 23:06
BRF
2-Hexanone (MBK)
ND
0.20
0.12
ND
0.82
0.48
4
7/13/19 23:06
BRF
Isopropanol
1.7
8.0
0.25
J
4.1
20
0.60
4
7/13/19 23:06
BRF
Methyl tert-Butyl Ether (MTBE)
ND
0.20
0.10
ND
0.72
0.36
4
7/13/19 23:06
BRF
Methylene Chloride
ND
2.0
0.24
ND
6.9
0.84
4
7/13/19 23:06
BRF
4-Methyl-2-pentanone (MIBK)
ND
0.20
0.096
ND
0.82
0.39
4
7/13/19 23:06
BRF
Naphthalene
0.70
0.20
0.15
V-05
3.6
1.0
0.80
4
7/13/19 23:06
BRF
Propene
ND
8.0
0.20
V-05, Z-01
ND
14
0.34
4
7/13/19 23:06
BRF
Styrene
1.0
0.20
0.12
4.4
0.85
0.53
4
7/13/19 23:06
BRF
1,1,2,2-Tetrachloroethane
ND
0.20
0.089
ND
1.4
0.61
4
7/13/19 23:06
BRF
Page 8 of 39

icon-tes w .
ANALYTICAL LABORATORY
Project Location: Gateway
Date Received: 6/28/2019
Field Sample #: SS-6
Sample ID: 19G0004-02
Sample Matrix: Sub Slab
Sampled: 6/28/2019 10:05
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Sample Description/Location:
Sub Description/Location:
Canister ID: 2241
Canister Size: 1 liter
Flow Controller ID: 4201
Sample Type: 5 min
Work Order: 19G0004
Initial Vacuum(in Hg): -28
Final Vacuum(in Hg): -1
Receipt Vacuum(in Hg): -2.1
Flow Controller Type: Fixed -Orifice
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv ug/m3 Date/Time
Analyte Results RL MDL Flag/Qual Results RL MDL Dilution Analyzed Analyst
Tetrachloroethylene
2.0
0.20
0.11
14
1.4
0.75
4
7/13/19 23:06
BRF
Tetrahydrofuran
2.2
0.20
0.13
6.5
0.59
0.39
4
7/13/19 23:06
BRF
Toluene
10
0.20
0.10
39
0.75
0.39
4
7/13/19 23:06
BRF
1,2,4-Trichlorobenzene
ND
0.20
0.14
V-05 ND
1.5
1.0
4
7/13/19 23:06
BRF
1, 1, 1 -Trichloroethane
ND
0.20
0.075
ND
1.1
0.41
4
7/13/19 23:06
BRF
1,1,2-Trichloroethane
ND
0.20
0.082
ND
1.1
0.45
4
7/13/19 23:06
BRF
Trichloroethylene
1.2
0.20
0.081
6.3
1.1
0.43
4
7/13/19 23:06
BRF
Trichlorofluoromethane (Freon 11)
7.5
0.80
0.12
42
4.5
0.65
4
7/13/19 23:06
BRF
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
ND
0.80
0.12
ND
6.1
0.93
4
7/13/19 23:06
BRF
1,2,4-Trimethylbenzene
ND
0.20
0.13
ND
0.98
0.63
4
7/13/19 23:06
BRF
1,3,5-Trimethylbenzene
0.40
0.20
0.13
2.0
0.98
0.62
4
7/13/19 23:06
BRF
Vinyl Acetate
ND
4.0
0.095
ND
14
0.34
4
7/13/19 23:06
BRF
Vinyl Chloride
ND
0.20
0.13
ND
0.51
0.32
4
7/13/19 23:06
BRF
m&p-Xylene
4.1
0.40
0.23
18
1.7
1.00
4
7/13/19 23:06
BRF
o-Xylene
1.3
0.20
0.12
5.5
0.87
0.54
4
7/13/19 23:06
BRF
Surrogates
4-Bromofluorobenzene (1)
% Recovery
89.2
% REC Limits
70-130
7/13/19 23:06
Page 9 of 39

icon-tes w .
ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Gateway
Sample Description/Location:
Work Order: 19G0004
Date Received: 6/28/2019
Sub Description/Location:
Initial Vacuum(in Hg): -28.5
Field Sample #: SS-1
Canister ID: 2097
Final Vacuum(in Hg): -5
Sample ID: 19G0004-03
Canister Size: 1 liter
Receipt Vacuum(in Hg): -4.5
Sample Matrix: Sub Slab
Flow Controller ID: 4069
Flow Controller Type: Fixed -Orifice
Sampled: 6/28/2019 10:31
Sample Type: 5 min
Flow Controller Calibration
RPD Pre and Post -Sampling:
Sample Flags: RL-11
Analyte
Results
ppbv
RL
EPA TO-15
MDL
Flag/Qual
Results
ug/m3
RI
MDL
Dilution
Date/Time
Analyzed
Analyst
Acetone
400
40
14
940
95
33
20
7/14/19 3:17
BRF
Benzene
ND
1.0
0.41
ND
3.2
1.3
20
7/14/19 3:17
BRF
Benzyl chloride
ND
1.0
0.22
ND
5.2
1.1
20
7/14/19 3:17
BRF
Bromodichloromethane
ND
1.0
0.37
ND
6.7
2.5
20
7/14/19 3:17
BRF
Bromoform
ND
1.0
0.45
ND
10
4.7
20
7/14/19 3:17
BRF
Bromomethane
ND
1.0
0.69
ND
3.9
2.7
20
7/14/19 3:17
BRF
1,3-Butadiene
ND
1.0
0.63
ND
2.2
1.4
20
7/14/19 3:17
BRF
2-Butanone (MEK)
51
40
1.6
150
120
4.6
20
7/14/19 3:17
BRF
Carbon Disulfide
ND
10
0.69
ND
31
2.1
20
7/14/19 3:17
BRF
Carbon Tetrachloride
ND
1.0
0.33
ND
6.3
2.1
20
7/14/19 3:17
BRF
Chlorobenzene
ND
1.0
0.49
ND
4.6
2.3
20
7/14/19 3:17
BRF
Chloroethane
ND
1.0
0.61
ND
2.6
1.6
20
7/14/19 3:17
BRF
Chloroform
ND
1.0
0.37
ND
4.9
1.8
20
7/14/19 3:17
BRF
Chloromethane
ND
2.0
0.68
L-03
ND
4.1
1.4
20
7/14/19 3:17
BRF
Cyclohexane
ND
1.0
0.71
ND
3.4
2.4
20
7/14/19 3:17
BRF
Dibromochloromethane
ND
1.0
0.33
ND
8.5
2.8
20
7/14/19 3:17
BRF
1,2-Dibromoethane (EDB)
ND
1.0
0.39
ND
7.7
3.0
20
7/14/19 3:17
BRF
1,2-Dichlorobenzene
ND
1.0
0.48
ND
6.0
2.9
20
7/14/19 3:17
BRF
1,3-Dichlorobenzene
ND
1.0
0.52
ND
6.0
3.1
20
7/14/19 3:17
BRF
1,4-Dichlorobenzene
ND
1.0
0.61
ND
6.0
3.7
20
7/14/19 3:17
BRF
Dichlorodifluoromethane (Freon 12)
ND
1.0
0.43
L-03, V-05
ND
4.9
2.1
20
7/14/19 3:17
BRF
1,1-Dichloroethane
ND
1.0
0.30
ND
4.0
1.2
20
7/14/19 3:17
BRF
1,2-Dichloroethane
ND
1.0
0.38
ND
4.0
1.5
20
7/14/19 3:17
BRF
1,1-Dichloroethylene
ND
1.0
0.41
ND
4.0
1.6
20
7/14/19 3:17
BRF
cis-1,2-Dichloroethylene
ND
1.0
0.41
ND
4.0
1.6
20
7/14/19 3:17
BRF
trans-1,2-Dichloroethylene
ND
1.0
0.41
ND
4.0
1.6
20
7/14/19 3:17
BRF
1,2-Dichloropropane
ND
1.0
0.35
ND
4.6
1.6
20
7/14/19 3:17
BRF
cis- 1,3 -Dichloropropene
ND
1.0
0.35
ND
4.5
1.6
20
7/14/19 3:17
BRF
trans- 1, 3 -Dichloropropene
ND
1.0
0.36
ND
4.5
1.7
20
7/14/19 3:17
BRF
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)
ND
1.0
0.50
ND
7.0
3.5
20
7/14/19 3:17
BRF
1,4-Dioxane
ND
10
6.4
ND
36
23
20
7/14/19 3:17
BRF
Ethanol
610
80
36
1200
150
67
40
7/14/19 11:40
BRF
Ethyl Acetate
ND
1.0
0.75
ND
3.6
2.7
20
7/14/19 3:17
BRF
Ethylbenzene
1.1
1.0
0.58
4.9
4.3
2.5
20
7/14/19 3:17
BRF
4-Ethyltoluene
ND
1.0
0.61
ND
4.9
3.0
20
7/14/19 3:17
BRF
Heptane
ND
1.0
0.59
ND
4.1
2.4
20
7/14/19 3:17
BRF
Hexachlorobutadiene
ND
1.0
0.46
ND
11
4.9
20
7/14/19 3:17
BRF
Hexane
ND
40
1.8
ND
140
6.2
20
7/14/19 3:17
BRF
2-Hexanone (MBK)
ND
1.0
0.59
ND
4.1
2.4
20
7/14/19 3:17
BRF
Isopropanol
47
40
1.2
120
98
3.0
20
7/14/19 3:17
BRF
Methyl tert-Butyl Ether (MTBE)
ND
1.0
0.50
ND
3.6
1.8
20
7/14/19 3:17
BRF
Methylene Chloride
ND
10
1.2
ND
35
4.2
20
7/14/19 3:17
BRF
4-Methyl-2-pentanone (MIBK)
ND
1.0
0.48
ND
4.1
2.0
20
7/14/19 3:17
BRF
Naphthalene
ND
1.0
0.77
V-05
ND
5.2
4.0
20
7/14/19 3:17
BRF
Propene
ND
40
0.99
V-05, Z-01
ND
69
1.7
20
7/14/19 3:17
BRF
Styrene
1.2
1.0
0.62
4.9
4.3
2.6
20
7/14/19 3:17
BRF
1,1,2,2-Tetrachloroethane
ND
1.0
0.44
ND
6.9
3.0
20
7/14/19 3:17
BRF
Page 10 of 39

icon-tes w .
ANALYTICAL LABORATORY
Project Location: Gateway
Date Received: 6/28/2019
Field Sample #: SS-1
Sample ID: 19G0004-03
Sample Matrix: Sub Slab
Sampled: 6/28/2019 10:31
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Sample Description/Location:
Sub Description/Location:
Canister ID: 2097
Canister Size: 1 liter
Flow Controller ID: 4069
Sample Type: 5 min
Work Order: 19G0004
Initial Vacuum(in Hg): -28.5
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -4.5
Flow Controller Type: Fixed -Orifice
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
Sample Flags: RL-11
ppbv ug/m3 Date/Time
Analyte Results RL MDL Flag/Qual Results RL MDL Dilution Analyzed Analyst
Tetrachloroethylene
2.0
1.0
0.56
14
6.8
3.8
20
7/14/19 3:17
BRF
Tetrahydrofuran
ND
1.0
0.66
ND
2.9
2.0
20
7/14/19 3:17
BRF
Toluene
14
1.0
0.52
54
3.8
1.9
20
7/14/19 3:17
BRF
1,2,4-Trichlorobenzene
ND
1.0
0.69
V-05 ND
7.4
5.1
20
7/14/19 3:17
BRF
1, 1, 1 -Trichloroethane
ND
1.0
0.37
ND
5.5
2.0
20
7/14/19 3:17
BRF
1,1,2-Trichloroethane
ND
1.0
0.41
ND
5.5
2.2
20
7/14/19 3:17
BRF
Trichloroethylene
0.86
1.0
0.40
J 4.6
5.4
2.2
20
7/14/19 3:17
BRF
Trichlorofluoromethane (Freon 11)
11
4.0
0.58
62
22
3.3
20
7/14/19 3:17
BRF
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
ND
4.0
0.60
ND
31
4.6
20
7/14/19 3:17
BRF
1,2,4-Trimethylbenzene
ND
1.0
0.64
ND
4.9
3.1
20
7/14/19 3:17
BRF
1,3,5-Trimethylbenzene
ND
1.0
0.63
ND
4.9
3.1
20
7/14/19 3:17
BRF
Vinyl Acetate
ND
20
0.48
ND
70
1.7
20
7/14/19 3:17
BRF
Vinyl Chloride
ND
1.0
0.63
ND
2.6
1.6
20
7/14/19 3:17
BRF
m&p-Xylene
4.9
2.0
1.2
21
8.7
5.0
20
7/14/19 3:17
BRF
o-Xylene
1.5
1.0
0.62
6.7
4.3
2.7
20
7/14/19 3:17
BRF
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1)
4-Bromofluorobenzene (1)
93.8 70-130
86.1 70-130
7/14/19 11:40
7/14/19 3:17
Page 11 of 39

icon-tes w .
ANALYTICAL LABORATORY
Project Location: Gateway
Date Received: 6/28/2019
Field Sample #: SS-2
Sample ID: 19G0004-04
Sample Matrix: Sub Slab
Sampled: 6/28/2019 11:00
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Sample Description/Location: Work Order: 19G0004
Sub Description/Location: Initial Vacuum(in Hg): -29.5
Canister ID: 2094 Final Vacuum(in Hg): -4
Canister Size: 1 liter Receipt Vacuum(in Hg): -4.1
Flow Controller ID: 4368 Flow Controller Type: Fixed -Orifice
Sample Type: 5 min Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv
ug/m3
Date/Time
Analyte
Results
RL
MDL
Flag/Qual
Results
RL
MDL
Dilution
Analyzed
Analyst
Acetone
21
8.0
2.8
50
19
6.6
4
7/13/19 23:47
BRF
Benzene
1.1
0.20
0.082
3.4
0.64
0.26
4
7/13/19 23:47
BRF
Benzyl chloride
ND
0.20
0.044
ND
1.0
0.23
4
7/13/19 23:47
BRF
Bromodichloromethane
ND
0.20
0.074
ND
1.3
0.49
4
7/13/19 23:47
BRF
Bromoform
ND
0.20
0.090
ND
2.1
0.93
4
7/13/19 23:47
BRF
Bromomethane
ND
0.20
0.14
ND
0.78
0.53
4
7/13/19 23:47
BRF
1,3-Butadiene
ND
0.20
0.13
ND
0.44
0.28
4
7/13/19 23:47
BRF
2-Butanone (MEK)
3.2
8.0
0.31
J
9.5
24
0.92
4
7/13/19 23:47
BRF
Carbon Disulfide
ND
2.0
0.14
ND
6.2
0.43
4
7/13/19 23:47
BRF
Carbon Tetrachloride
ND
0.20
0.065
ND
1.3
0.41
4
7/13/19 23:47
BRF
Chlorobenzene
ND
0.20
0.098
ND
0.92
0.45
4
7/13/19 23:47
BRF
Chloroethane
ND
0.20
0.12
ND
0.53
0.32
4
7/13/19 23:47
BRF
Chloroform
ND
0.20
0.074
ND
0.98
0.36
4
7/13/19 23:47
BRF
Chloromethane
ND
0.40
0.14
L-03
ND
0.83
0.28
4
7/13/19 23:47
BRF
Cyclohexane
ND
0.20
0.14
ND
0.69
0.49
4
7/13/19 23:47
BRF
Dibromochloromethane
ND
0.20
0.066
ND
1.7
0.57
4
7/13/19 23:47
BRF
1,2-Dibromoethane (EDB)
ND
0.20
0.078
ND
1.5
0.60
4
7/13/19 23:47
BRF
1,2-Dichlorobenzene
ND
0.20
0.096
ND
1.2
0.58
4
7/13/19 23:47
BRF
1,3-Dichlorobenzene
0.25
0.20
0.10
1.5
1.2
0.62
4
7/13/19 23:47
BRF
1,4-Dichlorobenzene
ND
0.20
0.12
ND
1.2
0.73
4
7/13/19 23:47
BRF
Dichlorodifluoromethane (Freon 12)
0.26
0.20
0.087
L-03, V-05
1.3
0.99
0.43
4
7/13/19 23:47
BRF
1,1-Dichloroethane
ND
0.20
0.061
ND
0.81
0.25
4
7/13/19 23:47
BRF
1,2-Dichloroethane
ND
0.20
0.076
ND
0.81
0.31
4
7/13/19 23:47
BRF
1,1-Dichloroethylene
ND
0.20
0.081
ND
0.79
0.32
4
7/13/19 23:47
BRF
cis-1,2-Dichloroethylene
ND
0.20
0.082
ND
0.79
0.32
4
7/13/19 23:47
BRF
trans-1,2-Dichloroethylene
ND
0.20
0.081
ND
0.79
0.32
4
7/13/19 23:47
BRF
1,2-Dichloropropane
ND
0.20
0.071
ND
0.92
0.33
4
7/13/19 23:47
BRF
cis- 1,3 -Dichloropropene
ND
0.20
0.070
ND
0.91
0.32
4
7/13/19 23:47
BRF
trans- 1, 3 -Dichloropropene
ND
0.20
0.073
ND
0.91
0.33
4
7/13/19 23:47
BRF
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114) ND
0.20
0.10
ND
1.4
0.70
4
7/13/19 23:47
BRF
1,4-Dioxane
ND
2.0
1.3
ND
7.2
4.6
4
7/13/19 23:47
BRF
Ethanol
44
8.0
3.6
84
15
6.7
4
7/13/19 23:47
BRF
Ethyl Acetate
0.75
0.20
0.15
2.7
0.72
0.54
4
7/13/19 23:47
BRF
Ethylbenzene
1.5
0.20
0.12
6.4
0.87
0.50
4
7/13/19 23:47
BRF
4-Ethyltoluene
0.78
0.20
0.12
3.8
0.98
0.60
4
7/13/19 23:47
BRF
Heptane
0.60
0.20
0.12
2.5
0.82
0.48
4
7/13/19 23:47
BRF
Hexachlorobutadiene
ND
0.20
0.092
ND
2.1
0.98
4
7/13/19 23:47
BRF
Hexane
1.1
8.0
0.35
J
3.9
28
1.2
4
7/13/19 23:47
BRF
2-Hexanone (MBK)
ND
0.20
0.12
ND
0.82
0.48
4
7/13/19 23:47
BRF
Isopropanol
4.7
8.0
0.25
J
11
20
0.60
4
7/13/19 23:47
BRF
Methyl tert-Butyl Ether (MTBE)
ND
0.20
0.10
ND
0.72
0.36
4
7/13/19 23:47
BRF
Methylene Chloride
0.27
2.0
0.24
J
0.93
6.9
0.84
4
7/13/19 23:47
BRF
4-Methyl-2-pentanone (MIBK)
ND
0.20
0.096
ND
0.82
0.39
4
7/13/19 23:47
BRF
Naphthalene
0.67
0.20
0.15
V-05
3.5
1.0
0.80
4
7/13/19 23:47
BRF
Propene
ND
8.0
0.20
V-05, Z-01
ND
14
0.34
4
7/13/19 23:47
BRF
Styrene
1.5
0.20
0.12
6.2
0.85
0.53
4
7/13/19 23:47
BRF
1,1,2,2-Tetrachloroethane
ND
0.20
0.089
ND
1.4
0.61
4
7/13/19 23:47
BRF
Page 12 of 39

icon-tes w .
ANALYTICAL LABORATORY
Project Location: Gateway
Date Received: 6/28/2019
Field Sample #: SS-2
Sample ID: 19G0004-04
Sample Matrix: Sub Slab
Sampled: 6/28/2019 11:00
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Sample Description/Location:
Sub Description/Location:
Canister ID: 2094
Canister Size: 1 liter
Flow Controller ID: 4368
Sample Type: 5 min
Work Order: 19G0004
Initial Vacuum(in Hg): -29.5
Final Vacuum(in Hg): -4
Receipt Vacuum(in Hg): -4.1
Flow Controller Type: Fixed -Orifice
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv ug/m3 Date/Time
Analyte Results RL MDL Flag/Qual Results RL MDL Dilution Analyzed Analyst
Tetrachloroethylene
1.4
0.20
0.11
9.8
1.4
0.75
4
7/13/19 23:47
BRF
Tetrahydrofuran
2.0
0.20
0.13
5.8
0.59
0.39
4
7/13/19 23:47
BRF
Toluene
17
0.20
0.10
63
0.75
0.39
4
7/13/19 23:47
BRF
1,2,4-Trichlorobenzene
ND
0.20
0.14
V-05 ND
1.5
1.0
4
7/13/19 23:47
BRF
1, 1, 1 -Trichloroethane
ND
0.20
0.075
ND
1.1
0.41
4
7/13/19 23:47
BRF
1,1,2-Trichloroethane
ND
0.20
0.082
ND
1.1
0.45
4
7/13/19 23:47
BRF
Trichloroethylene
0.24
0.20
0.081
1.3
1.1
0.43
4
7/13/19 23:47
BRF
Trichlorofluoromethane (Freon 11)
6.9
0.80
0.12
39
4.5
0.65
4
7/13/19 23:47
BRF
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
ND
0.80
0.12
ND
6.1
0.93
4
7/13/19 23:47
BRF
1,2,4-Trimethylbenzene
ND
0.20
0.13
ND
0.98
0.63
4
7/13/19 23:47
BRF
1,3,5-Trimethylbenzene
0.60
0.20
0.13
2.9
0.98
0.62
4
7/13/19 23:47
BRF
Vinyl Acetate
ND
4.0
0.095
ND
14
0.34
4
7/13/19 23:47
BRF
Vinyl Chloride
ND
0.20
0.13
ND
0.51
0.32
4
7/13/19 23:47
BRF
m&p-Xylene
7.0
0.40
0.23
30
1.7
1.00
4
7/13/19 23:47
BRF
o-Xylene
2.2
0.20
0.12
9.6
0.87
0.54
4
7/13/19 23:47
BRF
Surrogates
4-Bromofluorobenzene (1)
% Recovery
88.0
% REC Limits
70-130
7/13/19 23:47
Page 13 of 39

icon-tes w .
ANALYTICAL LABORATORY
Project Location: Gateway
Date Received: 6/28/2019
Field Sample #: SS-2d
Sample ID: 19G0004-05
Sample Matrix: Sub Slab
Sampled: 6/28/2019 11:06
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Sample Description/Location: Work Order: 19G0004
Sub Description/Location: Initial Vacuum(in Hg): -30
Canister ID: 2127 Final Vacuum(in Hg): -7
Canister Size: 1 liter Receipt Vacuum(in Hg): -6.5
Flow Controller ID: 4637 Flow Controller Type: Fixed -Orifice
Sample Type: 5 min Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv
ug/m3
Date/Time
Analyte
Results
RL
MDL
Flag/Qual
Results
RL
MDL
Dilution
Analyzed
Analyst
Acetone
18
8.0
2.8
42
19
6.6
4
7/14/19 0:29
BRF
Benzene
0.60
0.20
0.082
1.9
0.64
0.26
4
7/14/19 0:29
BRF
Benzyl chloride
ND
0.20
0.044
ND
1.0
0.23
4
7/14/19 0:29
BRF
Bromodichloromethane
ND
0.20
0.074
ND
1.3
0.49
4
7/14/19 0:29
BRF
Bromoform
ND
0.20
0.090
ND
2.1
0.93
4
7/14/19 0:29
BRF
Bromomethane
ND
0.20
0.14
ND
0.78
0.53
4
7/14/19 0:29
BRF
1,3-Butadiene
ND
0.20
0.13
ND
0.44
0.28
4
7/14/19 0:29
BRF
2-Butanone (MEK)
3.3
8.0
0.31
J
9.7
24
0.92
4
7/14/19 0:29
BRF
Carbon Disulfide
ND
2.0
0.14
ND
6.2
0.43
4
7/14/19 0:29
BRF
Carbon Tetrachloride
ND
0.20
0.065
ND
1.3
0.41
4
7/14/19 0:29
BRF
Chlorobenzene
ND
0.20
0.098
ND
0.92
0.45
4
7/14/19 0:29
BRF
Chloroethane
ND
0.20
0.12
ND
0.53
0.32
4
7/14/19 0:29
BRF
Chloroform
ND
0.20
0.074
ND
0.98
0.36
4
7/14/19 0:29
BRF
Chloromethane
ND
0.40
0.14
L-03
ND
0.83
0.28
4
7/14/19 0:29
BRF
Cyclohexane
ND
0.20
0.14
ND
0.69
0.49
4
7/14/19 0:29
BRF
Dibromochloromethane
ND
0.20
0.066
ND
1.7
0.57
4
7/14/19 0:29
BRF
1,2-Dibromoethane (EDB)
ND
0.20
0.078
ND
1.5
0.60
4
7/14/19 0:29
BRF
1,2-Dichlorobenzene
ND
0.20
0.096
ND
1.2
0.58
4
7/14/19 0:29
BRF
1,3-Dichlorobenzene
0.29
0.20
0.10
1.8
1.2
0.62
4
7/14/19 0:29
BRF
1,4-Dichlorobenzene
ND
0.20
0.12
ND
1.2
0.73
4
7/14/19 0:29
BRF
Dichlorodifluoromethane (Freon 12)
ND
0.20
0.087
L-03, V-05
ND
0.99
0.43
4
7/14/19 0:29
BRF
1,1-Dichloroethane
ND
0.20
0.061
ND
0.81
0.25
4
7/14/19 0:29
BRF
1,2-Dichloroethane
ND
0.20
0.076
ND
0.81
0.31
4
7/14/19 0:29
BRF
1,1-Dichloroethylene
ND
0.20
0.081
ND
0.79
0.32
4
7/14/19 0:29
BRF
cis-1,2-Dichloroethylene
ND
0.20
0.082
ND
0.79
0.32
4
7/14/19 0:29
BRF
trans-1,2-Dichloroethylene
ND
0.20
0.081
ND
0.79
0.32
4
7/14/19 0:29
BRF
1,2-Dichloropropane
ND
0.20
0.071
ND
0.92
0.33
4
7/14/19 0:29
BRF
cis- 1,3 -Dichloropropene
ND
0.20
0.070
ND
0.91
0.32
4
7/14/19 0:29
BRF
trans- 1, 3 -Dichloropropene
ND
0.20
0.073
ND
0.91
0.33
4
7/14/19 0:29
BRF
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114) ND
0.20
0.10
ND
1.4
0.70
4
7/14/19 0:29
BRF
1,4-Dioxane
ND
2.0
1.3
ND
7.2
4.6
4
7/14/19 0:29
BRF
Ethanol
32
8.0
3.6
60
15
6.7
4
7/14/19 0:29
BRF
Ethyl Acetate
ND
0.20
0.15
ND
0.72
0.54
4
7/14/19 0:29
BRF
Ethylbenzene
0.99
0.20
0.12
4.3
0.87
0.50
4
7/14/19 0:29
BRF
4-Ethyltoluene
0.51
0.20
0.12
2.5
0.98
0.60
4
7/14/19 0:29
BRF
Heptane
0.32
0.20
0.12
1.3
0.82
0.48
4
7/14/19 0:29
BRF
Hexachlorobutadiene
ND
0.20
0.092
ND
2.1
0.98
4
7/14/19 0:29
BRF
Hexane
ND
8.0
0.35
ND
28
1.2
4
7/14/19 0:29
BRF
2-Hexanone (MBK)
ND
0.20
0.12
ND
0.82
0.48
4
7/14/19 0:29
BRF
Isopropanol
3.9
8.0
0.25
J
9.6
20
0.60
4
7/14/19 0:29
BRF
Methyl tert-Butyl Ether (MTBE)
ND
0.20
0.10
ND
0.72
0.36
4
7/14/19 0:29
BRF
Methylene Chloride
0.36
2.0
0.24
J
1.3
6.9
0.84
4
7/14/19 0:29
BRF
4-Methyl-2-pentanone (MIBK)
ND
0.20
0.096
ND
0.82
0.39
4
7/14/19 0:29
BRF
Naphthalene
0.70
0.20
0.15
V-05
3.7
1.0
0.80
4
7/14/19 0:29
BRF
Propene
ND
8.0
0.20
V-05, Z-01
ND
14
0.34
4
7/14/19 0:29
BRF
Styrene
1.0
0.20
0.12
4.3
0.85
0.53
4
7/14/19 0:29
BRF
1,1,2,2-Tetrachloroethane
ND
0.20
0.089
ND
1.4
0.61
4
7/14/19 0:29
BRF
Page 14 of 39

icon-tes w .
ANALYTICAL LABORATORY
Project Location: Gateway
Date Received: 6/28/2019
Field Sample #: SS-2d
Sample ID: 19G0004-05
Sample Matrix: Sub Slab
Sampled: 6/28/2019 11:06
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Sample Description/Location:
Sub Description/Location:
Canister ID: 2127
Canister Size: 1 liter
Flow Controller ID: 4637
Sample Type: 5 min
Work Order: 19G0004
Initial Vacuum(in Hg): -30
Final Vacuum(in Hg): -7
Receipt Vacuum(in Hg): -6.5
Flow Controller Type: Fixed -Orifice
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv ug/m3 Date/Time
Analyte Results RL MDL Flag/Qual Results RL MDL Dilution Analyzed Analyst
Tetrachloroethylene
2.0
0.20
0.11
13
1.4
0.75
4
7/14/19 0:29
BRF
Tetrahydrofuran
1.6
0.20
0.13
4.7
0.59
0.39
4
7/14/19 0:29
BRF
Toluene
12
0.20
0.10
47
0.75
0.39
4
7/14/19 0:29
BRF
1,2,4-Trichlorobenzene
ND
0.20
0.14
V-05 ND
1.5
1.0
4
7/14/19 0:29
BRF
1, 1, 1 -Trichloroethane
ND
0.20
0.075
ND
1.1
0.41
4
7/14/19 0:29
BRF
1,1,2-Trichloroethane
ND
0.20
0.082
ND
1.1
0.45
4
7/14/19 0:29
BRF
Trichloroethylene
0.31
0.20
0.081
1.7
1.1
0.43
4
7/14/19 0:29
BRF
Trichlorofluoromethane (Freon 11)
7.6
0.80
0.12
43
4.5
0.65
4
7/14/19 0:29
BRF
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
ND
0.80
0.12
ND
6.1
0.93
4
7/14/19 0:29
BRF
1,2,4-Trimethylbenzene
ND
0.20
0.13
ND
0.98
0.63
4
7/14/19 0:29
BRF
1,3,5-Trimethylbenzene
0.42
0.20
0.13
2.1
0.98
0.62
4
7/14/19 0:29
BRF
Vinyl Acetate
ND
4.0
0.095
ND
14
0.34
4
7/14/19 0:29
BRF
Vinyl Chloride
ND
0.20
0.13
ND
0.51
0.32
4
7/14/19 0:29
BRF
m&p-Xylene
4.6
0.40
0.23
20
1.7
1.00
4
7/14/19 0:29
BRF
o-Xylene
1.4
0.20
0.12
6.2
0.87
0.54
4
7/14/19 0:29
BRF
Surrogates
4-Bromofluorobenzene (1)
% Recovery
87.8
% REC Limits
70-130
7/14/19 0:29
Page 15 of 39

icon-tes w .
ANALYTICAL LABORATORY
Project Location: Gateway
Date Received: 6/28/2019
Field Sample #: SS-4
Sample ID: 19G0004-06
Sample Matrix: Sub Slab
Sampled: 6/28/2019 11:27
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Sample Description/Location: Work Order: 19G0004
Sub Description/Location: Initial Vacuum(in Hg): -28.5
Canister ID: 2105 Final Vacuum(in Hg): -5
Canister Size: 1 liter Receipt Vacuum(in Hg): -6.1
Flow Controller ID: 4213 Flow Controller Type: Fixed -Orifice
Sample Type: 5 min Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv
ug/m3
Date/Time
Analyte
Results
RL
MDL
Flag/Qual
Results
RL
MDL
Dilution
Analyzed
Analyst
Acetone
33
8.0
2.8
78
19
6.6
4
7/14/19
1:10
BRF
Benzene
0.88
0.20
0.082
2.8
0.64
0.26
4
7/14/19
1:10
BRF
Benzyl chloride
ND
0.20
0.044
ND
1.0
0.23
4
7/14/19
1:10
BRF
Bromodichloromethane
ND
0.20
0.074
ND
1.3
0.49
4
7/14/19
1:10
BRF
Bromoform
ND
0.20
0.090
ND
2.1
0.93
4
7/14/19
1:10
BRF
Bromomethane
ND
0.20
0.14
ND
0.78
0.53
4
7/14/19
1:10
BRF
1,3-Butadiene
ND
0.20
0.13
ND
0.44
0.28
4
7/14/19
1:10
BRF
2-Butanone (MEK)
4.2
8.0
0.31
J
12
24
0.92
4
7/14/19
1:10
BRF
Carbon Disulfide
ND
2.0
0.14
ND
6.2
0.43
4
7/14/19
1:10
BRF
Carbon Tetrachloride
ND
0.20
0.065
ND
1.3
0.41
4
7/14/19
1:10
BRF
Chlorobenzene
ND
0.20
0.098
ND
0.92
0.45
4
7/14/19
1:10
BRF
Chloroethane
ND
0.20
0.12
ND
0.53
0.32
4
7/14/19
1:10
BRF
Chloroform
ND
0.20
0.074
ND
0.98
0.36
4
7/14/19
1:10
BRF
Chloromethane
ND
0.40
0.14
L-03
ND
0.83
0.28
4
7/14/19
1:10
BRF
Cyclohexane
ND
0.20
0.14
ND
0.69
0.49
4
7/14/19
1:10
BRF
Dibromochloromethane
ND
0.20
0.066
ND
1.7
0.57
4
7/14/19
1:10
BRF
1,2-Dibromoethane (EDB)
ND
0.20
0.078
ND
1.5
0.60
4
7/14/19
1:10
BRF
1,2-Dichlorobenzene
ND
0.20
0.096
ND
1.2
0.58
4
7/14/19
1:10
BRF
1,3-Dichlorobenzene
ND
0.20
0.10
ND
1.2
0.62
4
7/14/19
1:10
BRF
1,4-Dichlorobenzene
ND
0.20
0.12
ND
1.2
0.73
4
7/14/19
1:10
BRF
Dichlorodifluoromethane (Freon 12)
0.28
0.20
0.087
L-03, V-05
1.4
0.99
0.43
4
7/14/19
1:10
BRF
1,1-Dichloroethane
ND
0.20
0.061
ND
0.81
0.25
4
7/14/19
1:10
BRF
1,2-Dichloroethane
ND
0.20
0.076
ND
0.81
0.31
4
7/14/19
1:10
BRF
1,1-Dichloroethylene
ND
0.20
0.081
ND
0.79
0.32
4
7/14/19
1:10
BRF
cis-1,2-Dichloroethylene
ND
0.20
0.082
ND
0.79
0.32
4
7/14/19
1:10
BRF
trans-1,2-Dichloroethylene
ND
0.20
0.081
ND
0.79
0.32
4
7/14/19
1:10
BRF
1,2-Dichloropropane
ND
0.20
0.071
ND
0.92
0.33
4
7/14/19
1:10
BRF
cis- 1,3 -Dichloropropene
ND
0.20
0.070
ND
0.91
0.32
4
7/14/19
1:10
BRF
trans- 1, 3 -Dichloropropene
ND
0.20
0.073
ND
0.91
0.33
4
7/14/19
1:10
BRF
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114) ND
0.20
0.10
ND
1.4
0.70
4
7/14/19
1:10
BRF
1,4-Dioxane
ND
2.0
1.3
ND
7.2
4.6
4
7/14/19
1:10
BRF
Ethanol
50
8.0
3.6
95
15
6.7
4
7/14/19
1:10
BRF
Ethyl Acetate
0.68
0.20
0.15
2.5
0.72
0.54
4
7/14/19
1:10
BRF
Ethylbenzene
1.4
0.20
0.12
6.1
0.87
0.50
4
7/14/19
1:10
BRF
4-Ethyltoluene
0.58
0.20
0.12
2.9
0.98
0.60
4
7/14/19
1:10
BRF
Heptane
0.43
0.20
0.12
1.8
0.82
0.48
4
7/14/19
1:10
BRF
Hexachlorobutadiene
ND
0.20
0.092
ND
2.1
0.98
4
7/14/19
1:10
BRF
Hexane
0.60
8.0
0.35
J
2.1
28
1.2
4
7/14/19
1:10
BRF
2-Hexanone (MBK)
ND
0.20
0.12
ND
0.82
0.48
4
7/14/19
1:10
BRF
Isopropanol
4.1
8.0
0.25
J
10
20
0.60
4
7/14/19
1:10
BRF
Methyl tert-Butyl Ether (MTBE)
ND
0.20
0.10
ND
0.72
0.36
4
7/14/19
1:10
BRF
Methylene Chloride
0.47
2.0
0.24
J
1.6
6.9
0.84
4
7/14/19
1:10
BRF
4-Methyl-2-pentanone (MIBK)
ND
0.20
0.096
ND
0.82
0.39
4
7/14/19
1:10
BRF
Naphthalene
0.60
0.20
0.15
V-05
3.1
1.0
0.80
4
7/14/19
1:10
BRF
Propene
ND
8.0
0.20
V-05, Z-01
ND
14
0.34
4
7/14/19
1:10
BRF
Styrene
1.3
0.20
0.12
5.4
0.85
0.53
4
7/14/19
1:10
BRF
1,1,2,2-Tetrachloroethane
ND
0.20
0.089
ND
1.4
0.61
4
7/14/19
1:10
BRF
Page 16 of 39

icon-tes w .
ANALYTICAL LABORATORY
Project Location: Gateway
Date Received: 6/28/2019
Field Sample #: SS-4
Sample ID: 19G0004-06
Sample Matrix: Sub Slab
Sampled: 6/28/2019 11:27
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Sample Description/Location:
Sub Description/Location:
Canister ID: 2105
Canister Size: 1 liter
Flow Controller ID: 4213
Sample Type: 5 min
Work Order: 19G0004
Initial Vacuum(in Hg): -28.5
Final Vacuum(in Hg): -5
Receipt Vacuum(in Hg): -6.1
Flow Controller Type: Fixed -Orifice
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv ug/m3 Date/Time
Analyte Results RL MDL Flag/Qual Results RL MDL Dilution Analyzed Analyst
Tetrachloroethylene
3.9
0.20
0.11
26
1.4
0.75
4
7/14/19
1:10
BRF
Tetrahydrofuran
6.5
0.20
0.13
19
0.59
0.39
4
7/14/19
1:10
BRF
Toluene
17
0.20
0.10
63
0.75
0.39
4
7/14/19
1:10
BRF
1,2,4-Trichlorobenzene
ND
0.20
0.14
V-05 ND
1.5
1.0
4
7/14/19
1:10
BRF
1, 1, 1 -Trichloroethane
ND
0.20
0.075
ND
1.1
0.41
4
7/14/19
1:10
BRF
1,1,2-Trichloroethane
ND
0.20
0.082
ND
1.1
0.45
4
7/14/19
1:10
BRF
Trichloroethylene
ND
0.20
0.081
ND
1.1
0.43
4
7/14/19
1:10
BRF
Trichlorofluoromethane (Freon 11)
7.0
0.80
0.12
39
4.5
0.65
4
7/14/19
1:10
BRF
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
ND
0.80
0.12
ND
6.1
0.93
4
7/14/19
1:10
BRF
1,2,4-Trimethylbenzene
ND
0.20
0.13
ND
0.98
0.63
4
7/14/19
1:10
BRF
1,3,5-Trimethylbenzene
0.46
0.20
0.13
2.2
0.98
0.62
4
7/14/19
1:10
BRF
Vinyl Acetate
ND
4.0
0.095
ND
14
0.34
4
7/14/19
1:10
BRF
Vinyl Chloride
ND
0.20
0.13
ND
0.51
0.32
4
7/14/19
1:10
BRF
m&p-Xylene
6.3
0.40
0.23
28
1.7
1.00
4
7/14/19
1:10
BRF
o-Xylene
1.9
0.20
0.12
8.2
0.87
0.54
4
7/14/19
1:10
BRF
Surrogates
4-Bromofluorobenzene (1)
% Recovery
86.2
% REC Limits
70-130
7/14/19 1:10
Page 17 of 39

icon-tes w .
ANALYTICAL LABORATORY
Project Location: Gateway
Date Received: 6/28/2019
Field Sample #: SS-3
Sample ID: 19G0004-07
Sample Matrix: Sub Slab
Sampled: 6/28/2019 11:43
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Sample Description/Location: Work Order: 19G0004
Sub Description/Location: Initial Vacuum(in Hg): -29
Canister ID: 2117 Final Vacuum(in Hg): -5
Canister Size: 1 liter Receipt Vacuum(in Hg): -5.2
Flow Controller ID: 4210 Flow Controller Type: Fixed -Orifice
Sample Type: 5 min Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv
ug/m3
Date/Time
Analyte
Results
RL
MDL
Flag/Qual
Results
RL
MDL
Dilution
Analyzed
Analyst
Acetone
43
8.0
2.8
100
19
6.6
4
7/15/19 14:54
BRF
Benzene
1.1
0.20
0.082
3.5
0.64
0.26
4
7/15/19 14:54
BRF
Benzyl chloride
ND
0.20
0.044
ND
1.0
0.23
4
7/15/19 14:54
BRF
Bromodichloromethane
ND
0.20
0.074
ND
1.3
0.49
4
7/15/19 14:54
BRF
Bromoform
ND
0.20
0.090
ND
2.1
0.93
4
7/15/19 14:54
BRF
Bromomethane
ND
0.20
0.14
ND
0.78
0.53
4
7/15/19 14:54
BRF
1,3-Butadiene
ND
0.20
0.13
ND
0.44
0.28
4
7/15/19 14:54
BRF
2-Butanone (MEK)
6.2
8.0
0.31
J
18
24
0.92
4
7/15/19 14:54
BRF
Carbon Disulfide
ND
2.0
0.14
ND
6.2
0.43
4
7/15/19 14:54
BRF
Carbon Tetrachloride
ND
0.20
0.065
ND
1.3
0.41
4
7/15/19 14:54
BRF
Chlorobenzene
ND
0.20
0.098
ND
0.92
0.45
4
7/15/19 14:54
BRF
Chloroethane
ND
0.20
0.12
ND
0.53
0.32
4
7/15/19 14:54
BRF
Chloroform
ND
0.20
0.074
ND
0.98
0.36
4
7/15/19 14:54
BRF
Chloromethane
ND
0.40
0.14
L-03, V-05
ND
0.83
0.28
4
7/15/19 14:54
BRF
Cyclohexane
ND
0.20
0.14
ND
0.69
0.49
4
7/15/19 14:54
BRF
Dibromochloromethane
ND
0.20
0.066
ND
1.7
0.57
4
7/15/19 14:54
BRF
1,2-Dibromoethane (EDB)
ND
0.20
0.078
ND
1.5
0.60
4
7/15/19 14:54
BRF
1,2-Dichlorobenzene
ND
0.20
0.096
ND
1.2
0.58
4
7/15/19 14:54
BRF
1,3-Dichlorobenzene
0.41
0.20
0.10
2.5
1.2
0.62
4
7/15/19 14:54
BRF
1,4-Dichlorobenzene
ND
0.20
0.12
ND
1.2
0.73
4
7/15/19 14:54
BRF
Dichlorodifluoromethane (Freon 12)
0.35
0.20
0.087
L-03
1.7
0.99
0.43
4
7/15/19 14:54
BRF
1,1-Dichloroethane
ND
0.20
0.061
ND
0.81
0.25
4
7/15/19 14:54
BRF
1,2-Dichloroethane
ND
0.20
0.076
ND
0.81
0.31
4
7/15/19 14:54
BRF
1,1-Dichloroethylene
ND
0.20
0.081
ND
0.79
0.32
4
7/15/19 14:54
BRF
cis-1,2-Dichloroethylene
ND
0.20
0.082
ND
0.79
0.32
4
7/15/19 14:54
BRF
trans-1,2-Dichloroethylene
ND
0.20
0.081
ND
0.79
0.32
4
7/15/19 14:54
BRF
1,2-Dichloropropane
ND
0.20
0.071
ND
0.92
0.33
4
7/15/19 14:54
BRF
cis- 1,3 -Dichloropropene
ND
0.20
0.070
ND
0.91
0.32
4
7/15/19 14:54
BRF
trans- 1, 3 -Dichloropropene
ND
0.20
0.073
ND
0.91
0.33
4
7/15/19 14:54
BRF
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114) ND
0.20
0.10
ND
1.4
0.70
4
7/15/19 14:54
BRF
1,4-Dioxane
ND
2.0
1.3
ND
7.2
4.6
4
7/15/19 14:54
BRF
Ethanol
62
8.0
3.6
120
15
6.7
4
7/15/19 14:54
BRF
Ethyl Acetate
ND
0.20
0.15
ND
0.72
0.54
4
7/15/19 14:54
BRF
Ethylbenzene
1.4
0.20
0.12
6.3
0.87
0.50
4
7/15/19 14:54
BRF
4-Ethyltoluene
ND
0.20
0.12
ND
0.98
0.60
4
7/15/19 14:54
BRF
Heptane
ND
0.20
0.12
ND
0.82
0.48
4
7/15/19 14:54
BRF
Hexachlorobutadiene
ND
0.20
0.092
ND
2.1
0.98
4
7/15/19 14:54
BRF
Hexane
1.0
8.0
0.35
J
3.6
28
1.2
4
7/15/19 14:54
BRF
2-Hexanone (MBK)
ND
0.20
0.12
ND
0.82
0.48
4
7/15/19 14:54
BRF
Isopropanol
4.7
8.0
0.25
J
12
20
0.60
4
7/15/19 14:54
BRF
Methyl tert-Butyl Ether (MTBE)
ND
0.20
0.10
ND
0.72
0.36
4
7/15/19 14:54
BRF
Methylene Chloride
0.43
2.0
0.24
J
1.5
6.9
0.84
4
7/15/19 14:54
BRF
4-Methyl-2-pentanone (MIBK)
ND
0.20
0.096
ND
0.82
0.39
4
7/15/19 14:54
BRF
Naphthalene
0.82
0.20
0.15
4.3
1.0
0.80
4
7/15/19 14:54
BRF
Propene
ND
8.0
0.20
V-05, Z-01
ND
14
0.34
4
7/15/19 14:54
BRF
Styrene
1.3
0.20
0.12
5.6
0.85
0.53
4
7/15/19 14:54
BRF
1,1,2,2-Tetrachloroethane
ND
0.20
0.089
ND
1.4
0.61
4
7/15/19 14:54
BRF
Page 18 of 39

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ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Gateway
Sample Description/Location:
Work Order: 19G0004
Date Received: 6/28/2019
Sub Description/Location:
Initial Vacuum(in Hg): -29
Field Sample #: SS-3
Canister ID: 2117
Final Vacuum(in Hg): -5
Sample ID: 19G0004-07
Canister Size: 1 liter
Receipt Vacuum(in Hg): -5.2
Sample Matrix: Sub Slab
Flow Controller ID: 4210
Flow Controller Type: Fixed -Orifice
Sampled: 6/28/2019 11:43
Sample Type: 5 min
Flow Controller Calibration
RPD Pre and Post -Sampling:
Analyte
Results
ppbv
RL
EPA TO-15
MDL
Flag/Qual Results
ug/m3
RL
MDL
Dilution
Date/Time
Analyzed
Analyst
Tetrachloroethylene
1.1
0.20
0.11
7.7
1.4
0.75
4
7/15/19 14:54
BRF
Tetrahydrofuran
5.1
0.20
0.13
15
0.59
0.39
4
7/15/19 14:54
BRF
Toluene
20
0.20
0.10
74
0.75
0.39
4
7/15/19 14:54
BRF
1,2,4-Trichlorobenzene
ND
0.20
0.14
ND
1.5
1.0
4
7/15/19 14:54
BRF
1, 1, 1 -Trichloroethane
ND
0.20
0.075
ND
1.1
0.41
4
7/15/19 14:54
BRF
1,1,2-Trichloroethane
ND
0.20
0.082
ND
1.1
0.45
4
7/15/19 14:54
BRF
Trichloroethylene
ND
0.20
0.081
ND
1.1
0.43
4
7/15/19 14:54
BRF
Trichlorofluoromethane (Freon 11)
6.8
0.80
0.12
38
4.5
0.65
4
7/15/19 14:54
BRF
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
ND
0.80
0.12
ND
6.1
0.93
4
7/15/19 14:54
BRF
1,2,4-Trimethylbenzene
ND
0.20
0.13
ND
0.98
0.63
4
7/15/19 14:54
BRF
1,3,5-Trimethylbenzene
0.54
0.20
0.13
2.6
0.98
0.62
4
7/15/19 14:54
BRF
Vinyl Acetate
ND
4.0
0.095
ND
14
0.34
4
7/15/19 14:54
BRF
Vinyl Chloride
ND
0.20
0.13
ND
0.51
0.32
4
7/15/19 14:54
BRF
m&p-Xylene
6.9
0.40
0.23
30
1.7
1.00
4
7/15/19 14:54
BRF
o-Xylene
2.0
0.20
0.12
8.7
0.87
0.54
4
7/15/19 14:54
BRF
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1) 91.9 70-130 7/15/19 14:54
Page 19 of 39

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ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
Sample Extraction
Data
Prep Method: TO-15 Prep -EPA TO-15
Pre-Dil
Pre-Dil
Default
Actual
Pressure
Pre
Initial
Final
Injection
Injection
Lab Number [Field ID]
Batch
Dilution
Dilution
mL
mL
mL
mL
Date
19G0004-01 [SS-5]
B235524
1.5
1
N/A
1000
400
150
07/13/19
19G0004-02[SS-6]
B235524
1.5
1
N/A
1000
400
150
07/13/19
19G0004-03 [SS-1]
B235524
1.5
1
N/A
1000
400
30
07/13/19
19G0004-03RE1 [SS-1]
B235524
1.5
1
N/A
1000
400
15
07/13/19
19G0004-04[SS-2]
B235524
1.5
1
N/A
1000
400
150
07/13/19
19G0004-05 [SS-2d]
B235524
1.5
1
N/A
1000
400
150
07/13/19
19G0004-06[SS-4]
B235524
1.5
1
N/A
1000
400
150
07/13/19
Prep Method: TO-15 Prep -EPA TO-15
Pre-Dil
Pre-Dil
Default
Actual
Pressure
Pre
Initial
Final
Injection
Injection
Lab Number [Field ID]
Batch
Dilution
Dilution
mL
mL
mL
mL
Date
19G0004-07[SS-3]
B235552
4
1
N/A
1000
400
400
07/15/19
Page 20 of 39

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ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
QUALITY CONTROL
Air Toxics by EPA Compendium Methods - Quality Control
ppbv ug/m3 Spike Level Source %REC RPD
malyte Results RL Results RL ppbv Result %REC Limits RPD Limit Flag/Qua
Batch B235524 - TO-15 Prep
Blank (B235524-BLK1)
Prepared & Analyzed: 07/13/19
Acetone
ND
1.4
Benzene
ND
0.035
Benzyl chloride
ND
0.035
Bromodichloromethane
ND
0.035
Bromoform
ND
0.035
Bromomethane
ND
0.035
1,3-Butadiene
ND
0.035
2-Butanone (MEK)
ND
1.4
Carbon Disulfide
ND
0.35
Carbon Tetrachloride
ND
0.035
Chlorobenzene
ND
0.035
Chloroethane
ND
0.035
Chloroform
ND
0.035
Chloromethane
ND
0.070
L-03
Cyclohexane
ND
0.035
Dibromochloromethane
ND
0.035
1,2-Dibromoethane (EDB)
ND
0.035
1,2-Dichlorobenzene
ND
0.035
1,3-Dichlorobenzene
ND
0.035
1,4-Dichlorobenzene
ND
0.035
Dichlorodifluoromethane (Freon 12)
ND
0.035
L-03, V-05
1,1-Dichloroethane
ND
0.035
1,2-Dichloroethane
ND
0.035
1,1-Dichloroethylene
ND
0.035
cis-1,2-Dichloroethylene
ND
0.035
trans-1,2-Dichloroethylene
ND
0.035
1,2-Dichloropropane
ND
0.035
cis- 1,3 -Dichloropropene
ND
0.035
trans- l,3-Dichloropropene
ND
0.035
1,2-Dichloro- 1, 1,2,2-tetrafluoroethane
ND
0.035
(Freon 114)
1,4-Dioxane
ND
0.35
Ethanol
ND
1.4
Ethyl Acetate
ND
0.035
Ethylbenzene
ND
0.035
4-Ethyltoluene
ND
0.035
Heptane
ND
0.035
Hexachlorobutadiene
ND
0.035
Hexane
ND
1.4
2-Hexanone (MBK)
ND
0.035
Isopropanol
ND
1.4
Methyl tert-Butyl Ether (MTBE)
ND
0.035
Methylene Chloride
ND
0.35
4-Methyl-2-pentanone (MIBK)
ND
0.035
Naphthalene
ND
0.035
V-05
Propene
ND
1.4
V-05, Z-01
Styrene
ND
0.035
Page 21 of 39

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ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
QUALITY CONTROL
Air Toxics by EPA Compendium Methods - Quality Control
ppbv ug/m3 Spike Level Source %REC RPD
\nalyte Results RL Results RL ppbv Result %REC Limits RPD Limit Flag/Qua]
Batch B235524 - TO-15 Prep
Blank (B235524-BLKI)
Prepared & Analyzed: 07/13/19
1,1,2,2-Tetrachloroethane
ND
0.035
Tetrachloroethylene
ND
0.035
Tetrahydrofuran
ND
0.035
Toluene
ND
0.035
1,2,4-Trichlorobenzene
ND
0.035 V-Of
1, 1, 1 -Trichloroethane
ND
0.035
1,1,2-Trichloroethane
ND
0.035
Trichloroethylene
ND
0.035
Trichlorofluoromethane (Freon 11)
ND
0.14
1, 1,2-Trichloro- 1,2,2-trifluoroethane (Freon
ND
0.14
113)
1,2,4-Trimethylbenzene
ND
0.035
1,3,5-Trimethylbenzene
ND
0.035
Vinyl Acetate
ND
0.70
Vinyl Chloride
ND
0.035
m&p-Xylene
ND
0.070
o-Xylene
ND
0.035
Surrogate: 4-Bromofluorobenzene (1)
LCS (B235524-BS1)
7.16
8.00 89.5
Prepared & Analyzed: 07/13/19
70-130
Acetone
5.00
5.00
100
70-130
Benzene
5.52
5.00
110
70-130
Benzyl chloride
6.66
5.00
133 *
70-130 L-01
Bromodichloromethane
5.40
5.00
108
70-130
Bromoform
5.17
5.00
103
70-130
Bromomethane
4.24
5.00
84.8
70-130
1,3-Butadiene
4.35
5.00
87.0
70-130
2-Butanone (MEK)
5.07
5.00
101
70-130
Carbon Disulfide
5.66
5.00
113
70-130
Carbon Tetrachloride
4.61
5.00
92.2
70-130
Chlorobenzene
5.53
5.00
111
70-130
Chloroethane
4.32
5.00
86.3
70-130
Chloroform
4.96
5.00
99.2
70-130
Chloromethane
3.28
5.00
65.5 *
70-130 L-03
Cyclohexane
5.27
5.00
105
70-130
Dibromochloromethane
5.02
5.00
100
70-130
1,2-Dibromoethane (EDB)
5.77
5.00
115
70-130
1,2-Dichlorobenzene
5.31
5.00
106
70-130
1,3-Dichlorobenzene
5.51
5.00
110
70-130
1,4-Dichlorobenzene
5.44
5.00
109
70-130
Dichlorodifluoromethane (Freon 12)
2.89
5.00
57.9 *
70-130 L-03, V-05
1,1-Dichloroethane
4.96
5.00
99.1
70-130
1,2-Dichloroethane
5.15
5.00
103
70-130
1, 1 -Dichloroethylene
4.90
5.00
98.0
70-130
cis-1,2-Dichloroethylene
4.81
5.00
96.2
70-130
trans-1,2-Dichloroethylene
5.22
5.00
104
70-130
1,2-Dichloropropane
5.25
5.00
105
70-130
Page 22 of 39

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ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
QUALITY CONTROL
Air Toxics by EPA Compendium Methods - Quality Control
ppbv ug/m3 Spike Level Source %REC RPD
\nalyte Results RL Results RL ppbv Result %REC Limits RPD Limit Flag/Qua]
Batch B235524 - TO-15 Prep
LCS (B235524-BSI)
Prepared & Analyzed: 07/13/19
cis-1,3-Dichloropropene
5.63
5.00
113
70-130
trans-1,3-Dichloropropene
5.93
5.00
119
70-130
1,2-Dichloro- 1, 1,2,2-tetrafluoroethane
3.66
5.00
73.1
70-130
(Freon 114)
1,4-Dioxane
5.73
5.00
115
70-130
Ethanol
5.72
5.00
114
70-130
Ethyl Acetate
4.21
5.00
84.2
70-130
Ethylbenzene
5.87
5.00
117
70-130
4-Ethyltoluene
5.96
5.00
119
70-130
Heptane
5.55
5.00
ill
70-130
Hexachlorobutadiene
4.15
5.00
82.9
70-130
Hexane
5.47
5.00
109
70-130
2-Hexanone (MBK)
6.24
5.00
125
70-130
Isopropanol
4.37
5.00
87.4
70-130
Methyl tert-Butyl Ether (MTBE)
5.14
5.00
103
70-130
Methylene Chloride
4.63
5.00
92.6
70-130
4-Methyl-2-pentanone (MIBK)
5.35
5.00
107
70-130
Naphthalene
4.90
5.00
98.1
70-130
V-0'-
Propene
2.83
5.00
56.5 *
70-130
Z-01, V-Of
Styrene
5.86
5.00
117
70-130
1,1,2,2-Tetrachloroethane
6.12
5.00
122
70-130
Tetrachloroethylene
4.85
5.00
97.0
70-130
Tetrahydrofuran
5.48
5.00
110
70-130
Toluene
6.08
5.00
122
70-130
1,2,4-Trichlorobenzene
4.77
5.00
95.5
70-130
V-Of
1, 1, 1 -Trichloroethane
4.76
5.00
95.2
70-130
1,1,2-Trichloroethane
5.94
5.00
119
70-130
Trichloroethylene
5.16
5.00
103
70-130
Trichlorofluoromethane (Freon 11)
4.46
5.00
89.1
70-130
1, 1,2-Trichloro- 1,2,2-trifluoroethane (Freon
4.73
5.00
94.6
70-130
113)
1,2,4-Trimethylbenzene
5.86
5.00
117
70-130
1,3,5-Trimethylbenzene
5.96
5.00
119
70-130
Vinyl Acetate
9.82
5.00
196 *
70-130
V-36,L-01
Vinyl Chloride
3.84
5.00
76.8
70-130
m&p-Xylene
12.8
10.0
128
70-130
o-Xylene
6.17
5.00
123
70-130
Surrogate: 4-Bromofluorobenzene (1) 7.51 8.00 93.8 70-130
Page 23 of 39

icon-tes w .
ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
QUALITY CONTROL
Air Toxics by EPA Compendium Methods - Quality Control
ppbv ug/m3 Spike Level Source %REC RPD
malyte Results RL Results RL ppbv Result %REC Limits RPD Limit Flag/Qua
Batch B235552 - TO-15 Prep
Blank (B235552-BLKI)
Prepared & Analyzed: 07/15/19
Acetone
ND
1.4
Benzene
ND
0.035
Benzyl chloride
ND
0.035
Bromodichloromethane
ND
0.035
Bromoform
ND
0.035
Bromomethane
ND
0.035
1,3-Butadiene
ND
0.035
2-Butanone (MEK)
ND
1.4
Carbon Disulfide
ND
0.35
Carbon Tetrachloride
ND
0.035
Chlorobenzene
ND
0.035
Chloroethane
ND
0.035
Chloroform
ND
0.035
Chloromethane
ND
0.070 L-03, V-05
Cyclohexane
ND
0.035
Dibromochloromethane
ND
0.035
1,2-Dibromoethane (EDB)
ND
0.035
1,2-Dichlorobenzene
ND
0.035
1,3-Dichlorobenzene
ND
0.035
1,4-Dichlorobenzene
ND
0.035
Dichlorodifluoromethane (Freon 12)
ND
0.035 L-03
1,1-Dichloroethane
ND
0.035
1,2-Dichloroethane
ND
0.035
1,1-Dichloroethylene
ND
0.035
cis-1,2-Dichloroethylene
ND
0.035
trans-1,2-Dichloroethylene
ND
0.035
1,2-Dichloropropane
ND
0.035
cis- 1,3 -Dichloropropene
ND
0.035
trans- 1, 3 -Dichloropropene
ND
0.035
1,2-Dichloro- 1, 1,2,2-tetrafluoroethane
ND
0.035
(Freon 114)
1,4-Dioxane
ND
0.35
Ethanol
ND
1.4
Ethyl Acetate
ND
0.035
Ethylbenzene
ND
0.035
4-Ethyltoluene
ND
0.035
Heptane
ND
0.035
Hexachlorobutadiene
ND
0.035
Hexane
ND
1.4
2-Hexanone (MBK)
ND
0.035
Isopropanol
ND
1.4
Methyl tert-Butyl Ether (MTBE)
ND
0.035
Methylene Chloride
ND
0.35
4-Methyl-2-pentanone (MIBK)
ND
0.035
Naphthalene
ND
0.035
Propene
ND
1.4 V-05,Z-01
Styrene
ND
0.035
Page 24 of 39

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ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
QUALITY CONTROL
Air Toxics by EPA Compendium Methods - Quality Control
ppbv ug/m3 Spike Level Source %REC RPD
\nalyte Results RL Results RL ppbv Result %REC Limits RPD Limit Flag/Qua]
Batch B235552 - TO-15 Prep
Blank (B235552-BLKI)
Prepared & Analyzed: 07/15/19
1,1,2,2-Tetrachloroethane
ND
0.035
Tetrachloroethylene
ND
0.035
Tetrahydrofuran
ND
0.035
Toluene
ND
0.035
1,2,4-Trichlorobenzene
ND
0.035
1, 1, 1 -Trichloroethane
ND
0.035
1,1,2-Trichloroethane
ND
0.035
Trichloroethylene
ND
0.035
Trichlorofluoromethane (Freon 11)
ND
0.14
1, 1,2-Trichloro- 1,2,2-trifluoroethane (Freon
ND
0.14
113)
1,2,4-Trimethylbenzene
ND
0.035
1,3,5-Trimethylbenzene
ND
0.035
Vinyl Acetate
ND
0.70
Vinyl Chloride
ND
0.035
m&p-Xylene
ND
0.070
o-Xylene
ND
0.035
Surrogate: 4-Bromofluorobenzene (1)
LCS (B235552-BS1)
7.32
8.00 91.5
Prepared & Analyzed: 07/15/19
70-130
Acetone
4.79
5.00
95.8
70-130
Benzene
4.46
5.00
89.1
70-130
Benzyl chloride
5.54
5.00
ill
70-130
Bromodichloromethane
4.72
5.00
94.5
70-130
Bromoform
4.62
5.00
92.3
70-130
Bromomethane
4.74
5.00
94.9
70-130
1,3-Butadiene
4.32
5.00
86.3
70-130
2-Butanone (MEK)
4.61
5.00
92.2
70-130
Carbon Disulfide
5.99
5.00
120
70-130
Carbon Tetrachloride
4.30
5.00
85.9
70-130
Chlorobenzene
4.74
5.00
94.7
70-130
Chloroethane
4.44
5.00
88.8
70-130
Chloroform
5.45
5.00
109
70-130
Chloromethane
3.24
5.00
64.7 *
70-130 L-03, V-05
Cyclohexane
4.34
5.00
86.8
70-130
Dibromochloromethane
4.44
5.00
88.8
70-130
1,2-Dibromoethane (EDB)
4.93
5.00
98.7
70-130
1,2-Dichlorobenzene
4.80
5.00
96.1
70-130
1,3-Dichlorobenzene
4.89
5.00
97.7
70-130
1,4-Dichlorobenzene
4.89
5.00
97.8
70-130
Dichlorodifluoromethane (Freon 12)
3.12
5.00
62.4 *
70-130 L-03
1,1-Dichloroethane
4.95
5.00
98.9
70-130
1,2-Dichloroethane
5.54
5.00
ill
70-130
1,1-Dichloroethylene
4.78
5.00
95.5
70-130
cis-1,2-Dichloroethylene
4.64
5.00
92.8
70-130
trans-1,2-Dichloroethylene
5.02
5.00
100
70-130
1,2-Dichloropropane
3.94
5.00
78.8
70-130
Page 25 of 39

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ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
QUALITY CONTROL
Air Toxics by EPA Compendium Methods - Quality Control
ppbv ug/m3 Spike Level Source %REC RPD
\nalyte Results RL Results RL ppbv Result %REC Limits RPD Limit Flag/Qua]
Batch B235552 - TO-15 Prep
LCS (B235552-BS1)
Prepared & Analyzed: 07/15/19
cis-1,3-Dichloropropene
4.52
5.00
90.4
70-130
trans-1,3-Dichloropropene
4.83
5.00
96.6
70-130
1,2-Dichloro- 1, 1,2,2-tetrafluoroethane
4.07
5.00
81.5
70-130
(Freon 114)
1,4-Dioxane
5.12
5.00
102
70-130
Ethanol
5.52
5.00
110
70-130
Ethyl Acetate
3.82
5.00
76.4
70-130
Ethylbenzene
4.72
5.00
94.4
70-130
4-Ethyltoluene
5.18
5.00
104
70-130
Heptane
4.05
5.00
80.9
70-130
Hexachlorobutadiene
3.88
5.00
77.5
70-130
Hexane
4.92
5.00
98.4
70-130
2-Hexanone (MBK)
4.11
5.00
82.3
70-130
Isopropanol
3.95
5.00
79.0
70-130
Methyl tert-Butyl Ether (MTBE)
5.31
5.00
106
70-130
Methylene Chloride
4.51
5.00
90.3
70-130
4-Methyl-2-pentanone (MIBK)
4.04
5.00
80.7
70-130
Naphthalene
4.46
5.00
89.3
70-130
Propene
2.75
5.00
54.9 *
70-130 Z-01, V-Of
Styrene
4.85
5.00
97.0
70-130
1,1,2,2-Tetrachloroethane
4.98
5.00
99.6
70-130
Tetrachloroethylene
4.18
5.00
83.7
70-130
Tetrahydrofuran
4.76
5.00
95.3
70-130
Toluene
4.81
5.00
96.2
70-130
1,2,4-Trichlorobenzene
4.46
5.00
89.3
70-130
1, 1, 1 -Trichloroethane
4.35
5.00
87.1
70-130
1,1,2-Trichloroethane
4.97
5.00
99.3
70-130
Trichloroethylene
4.37
5.00
87.5
70-130
Trichlorofluoromethane (Freon 11)
5.16
5.00
103
70-130
1, 1,2-Trichloro- 1,2,2-trifluoroethane (Freon
5.36
5.00
107
70-130
113)
1,2,4-Trimethylbenzene
5.00
5.00
99.9
70-130
1,3,5-Trimethylbenzene
5.09
5.00
102
70-130
Vinyl Acetate
6.94
5.00
139 *
70-130 V-36,L-01
Vinyl Chloride
3.92
5.00
78.4
70-130
m&p-Xylene
9.70
10.0
97.0
70-130
o-Xylene
5.07
5.00
101
70-130
Surrogate: 4-Bromofluorobenzene (1) 7.55 8.00 94.4 70-130
Page 26 of 39

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ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 * FAX [phone] " TEL. [phone]
FLAG/QUALIFIER SUMMARY
*
QC result is outside of established limits.
t
Wide recovery limits established for difficult compound.
$
Wide RPD limits established for difficult compound.
#
Data exceeded client recommended or regulatory level
RL
Reporting Limit
MDL
Method Detection Limit
RPD
Relative Percent Difference
LCS
Laboratory Control Sample
LCS Dup
Duplicate Laboratory Control Sample
MS
Matrix Spike Sample
MS Dup
Duplicate Matrix Spike Sample
REC
Recovery
QC
Quality Control
ppbv
Parts per billion volume
EPA
United States Environmental Protection Agency
% REC
Percent Recovery
ND
Not Detected
N/A
Not Applicable
DL
Detection Limit
NC Not Calculated
LFB/LCS Lab Fortified Blank/Lab Control Sample
ORP Oxidation -Reduction Potential
wet Not dry weight corrected
% wt Percent weight
Kg Kilogram
g Gram
mg Milligram
µg Microgram
ng Nanogram
L Liter
mL Milliliter
µL Microliter
m3 Cubic Meter
EPH Extractable Petroleum Hydrocarbons
VPH Volatile Petroleum Hydrocarbons
APH Air Petroleum Hydrocarbons
FID Flame Ionization Detector
PID Photo Ionization Detector
Percent recoveries and relative percent differences (RPDs) are determined by the software using values in the
calculation which have not been rounded.
J Detected but below the Reporting Limit (lowest calibration standard); therefore, result is an estimated
concentration (CLP J-Flag).
L-01 Laboratory fortified blank /laboratory control sample recovery outside of control limits. Data validation is not
affected since all results are "not detected" for all samples in this batch for this compound and bias is on the high
side.
L-03 Laboratory fortified blank/laboratory control sample recovery is outside of control limits. Reported value for this
compound is likely to be biased on the low side.
RL-11 Elevated reporting limit due to high concentration of target compounds.
V-05 Continuing calibration verification (CCV) did not meet method specifications and was biased on the low side for
this compound.
V-20 Continuing calibration verification (CCV) did not meet method specifications and was biased on the high side.
Data validation is not affected since sample result was "not detected" for this compound.
V-36 Initial calibration verification (ICV) did not meet method specifications and was biased on the high side. Data
validation is not affected since sample result was "not detected" for this compound.
Z-01 Compound fails the method requirement of 70-130% recovery for the LCS. Is classified by the lab as a difficult
compound and passes the in house limits of 50-150%.
Page 27 of 39

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ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYST
TPH Thomas P. Hnitecki
RAP Raisa A. Petraitis
STATION PDF Management Station
KKM Kerry K. McGee
BRF Brittany R. Fisk
Page 28 of 39

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ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
INTERNAL STANDARD AREAAND RT SUMMARY
EPA TO-15
Internal Standard
Response
RT
Reference
Response
Reference
RT
Area %
Area o/
Limits
RT Diff
RT Diff
Limit
Q
Initial Cal Check (S035866-ICV1) Lab File ID: F1913421.13 Analyzed: 05/15/19 07:19
Bromochloromethane (1)
220675
8.627
224825
8.624
98
60 - 140
0.0030
+/-0.50
1,4-Difluorobenzene (1)
904687
10.392
914686
10.389
99
60 - 140
0.0030
+/-0.50
Chlorobenzene-d5(1)
842982
14.756
837686
14.755
101
60-140
0.0010
+/-0.50
INTERNAL STANDARD AREAAND RT SUMMARY
EPA TO-15
Internal Standard
Response
RT
Reference
Response
Reference
RT
Area %
Area o/
Limits
RT Diff
RT Diff
Limit
Q
Calibration Check (S038082-CCV1) Lab File ID: F1919409.13 Analyzed: 07/13/19 16:57
Bromochloromethane (1)
234978
8.624
224825
8.624
105
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene (1)
934941
10.389
914686
10.389
102
60 - 140
0.0000
+/-0.50
Chlorobenzene-d5(1)
810325
14.752
837686
14.755
97
60-140
-0.0030
+/-0.50
LCS (B235524-BS1 ) Lab File ID: F1919410.13 Analyzed: 07/13/19 17:37
Bromochloromethane (1)
226132
8.627
234978
8.624
96
60 - 140
0.0030
+/-0.50
1,4-Difluorobenzene(1)
835140
10.392
934941
10.389
89
60-140
0.0030
+/-0.50
Chlorobenzene-d5(1)
705235
14.752
810325
14.752
87
60-140
0.0000
+/-0.50
Blank (B235524-BLK1) Lab File ID: F1919414.13 Analyzed: 07/13/19 20:25
Bromochloromethane (1)
217060
8.627
234978
8.624
92
60 - 140
0.0030
+/-0.50
1,4-Difluorobenzene(1)
845204
10.389
934941
10.389
90
60-140
0.0000
+/-0.50
Chlorobenzene-d5(1)
768267
14.752
810325
14.752
95
60-140
0.0000
+/-0.50
SS-5 (19G0004-01 ) Lab File ID: F1919417.13 Analyzed: 07/13/19 22:26
Bromochloromethane (1)
215224
8.627
234978
8.624
92
60 - 140
0.0030
+/-0.50
1,4-Difluorobenzene(1)
831557
10.389
934941
10.389
89
60-140
0.0000
+/-0.50
Chlorobenzene-d5(1)
730599
14.749
810325
14.752
90
60-140
-0.0030
+/-0.50
SS-6 (19G0004-02 ) Lab File ID: F1919418.13 Analyzed: 07/13/19 23:06
Bromochloromethane (1)
206029
8.627
234978
8.624
88
60 - 140
0.0030
+/-0.50
1,4-Difluorobenzene(1)
843783
10.389
934941
10.389
90
60-140
0.0000
+/-0.50
Chlorobenzene-d5(1)
756738
14.749
810325
14.752
93
60-140
-0.0030
+/-0.50
SS-2 (19G0004-04) Lab File ID: F1919419.1) Analyzed: 07/13/19 23:47
Bromochloromethane (1)
195807
8.624
234978
8.624
83
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
839300
10.389
934941
10.389
90
60-140
0.0000
+/-0.50
Chlorobenzene-d5(1)
743884
14.749
810325
14.752
92
60-140
-0.0030
+/-0.50
SS-2d (19G0004-05) Lab File ID: F1919420.1) Analyzed: 07/14/19 00:29
Bromochloromethane (1)
190102
8.624
234978
8.624
81
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
835230
10.389
934941
10.389
89
60-140
0.0000
+/-0.50
Chlorobenzene-d5(1)
737340
14.749
810325
14.752
91
60-140
-0.0030
+/-0.50
Page 29 of 39

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ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
INTERNAL STANDARD AREAAND RT SUMMARY
EPA TO-15
Internal Standard
Response
RT
Reference
Response
Reference
RT
Area %
Area o/
Limits
RT Diff
RT Diff
Limit
Q
SS-4 (19G0004-06) Lab File ID: F1919421.D Analyzed: 07/14/19 0 1: 10
Bromochloromethane (1)
187397
8.627
234978
8.624
80
60 - 140
0.0030
+/-0.50
1,4-Difluorobenzene (1)
821748
10.389
934941
10.389
88
60 - 140
0.0000
+/-0.50
Chlorobenzene-d5(1)
731423
14.749
810325
14.752
90
60-140
-0.0030
+/-0.50
SS-1 (19G0004-03) Lab File ID: F1919424.D Analyzed: 07/14/19 03:17
Bromochloromethane (1)
167356
8.621
234978
8.624
71
60 - 140
-0.0030
+/-0.50
1,4-Difluorobenzene (1)
801674
10.389
934941
10.389
86
60 - 140
0.0000
+/-0.50
Chlorobenzene-d5(1)
710602
14.749
810325
14.752
88
60-140
-0.0030
+/-0.50
SS-1 (19G0004-03RE1) Lab File ID: F1919435.D Analyzed: 07/14/19 11:40
Bromochloromethane (1)
165890
8.624
234978
8.624
71
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
708257
10.389
934941
10.389
76
60-140
0.0000
+/-0.50
Chlorobenzene-d5(1)
617779
14.749
810325
14.752
76
60-140
-0.0030
+/-0.50
INTERNAL STANDARD AREA AND RT SUMMARY
EPA TO-15
Internal Standard
Response
RT
Reference
Response
Reference
RT
Area %
Area %
Limits
RT Diff
RT Diff
Limit
Q
Calibration Check (S038102-CCV1) Lab File ID: F1919604.D Analyzed: 07/15/19 10:41
Bromochloromethane (1)
176423
8.624
224825
8.624
78
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
793878
10.392
914686
10.389
87
60-140
0.0030
+/-0.50
Chlorobenzene-d5(1)
700127
14.752
837686
14.755
84
60-140
-0.0030
+/-0.50
LCS (B235552-BS1) Lab File ID: F1919606.D Analyzed: 07/15/19 12:01
Bromochloromethane (1)
165290
8.624
176423
8.624
94
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
772282
10.392
793878
10.392
97
60-140
0.0000
+/-0.50
Chlorobenzene-d5(1)
685933
14.752
700127
14.752
98
60-140
0.0000
+/-0.50
Blank (B235552-BLK1) Lab File ID: F1919609.D Analyzed: 07/15/19 14:06
Bromochloromethane (1)
154277
8.627
176423
8.624
87
60 - 140
0.0030
+/-0.50
1,4-Difluorobenzene(1)
726282
10.389
793878
10.392
91
60-140
-0.0030
+/-0.50
Chlorobenzene-d5(1)
649044
14.752
700127
14.752
93
60-140
0.0000
+/-0.50
SS-3 (19G0004-07 ) Lab File ID: F1919610.D Analyzed: 07/15/19 14:54
Bromochloromethane (1)
157556
8.624
176423
8.624
89
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
733632
10.392
793878
10.392
92
60-140
0.0000
+/-0.50
Chlorobenzene-d5(1)
665260
14.749
700127
14.752
95
60-140
-0.0030
+/-0.50
Page 30 of 39

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ANALYTICAL LABORATORY
39 Spruce Street' East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
CONTINUING CALIBRATION CHECK
EPA TO-15
S038082-CCV 1
COMPOUND
TYPE
CONC. (ppbv)
RESPONSE FACTOR
% DIFF / DRIFT
STD
CCV
ICAL
CCV
MIN (#)
CCV
LIMIT (#)
Acetone
A
5.00
4.07
1.134293
0.9222991
-18.7
30
Benzene
A
5.00
5.07
0.5688217
0.5767945
1.4
30
Benzyl chloride
A
5.00
4.61
0.7404793
0.6822843
-7.9
30
Bromodichloromethane
A
5.00
4.98
0.4444491
0.4426581
-0.4
30
Bromoform
A
5.00
4.31
0.5091155
0.4386645
-13.8
30
Bromomethane
A
5.00
4.20
0.9958814
0.8375184
-15.9
30
1,3-Butadiene
A
5.00
4.25
0.6515652
0.5535837
-15.0
30
2-Butanone (MEK)
A
5.00
4.58
1.161511
1.06301
-8.5
30
Carbon Disulfide
A
5.00
5.35
1.981312
2.121274
7.1
30
Carbon Tetrachloride
A
5.00
4.42
0.4566571
0.4034257
-11.7
30
Chlorobenzene
A
5.00
4.75
0.7255923
0.6892879
-5.0
30
Chloroethane
A
5.00
4.20
0.4347076
0.3656172
-15.9
30
Chloroform
A
5.00
4.83
1.662216
1.606401
-3.4
30
Chloromethane
A
5.00
4.16
1.093038
0.9086808
-16.9
30
Cyclohexane
A
5.00
4.90
0.2571574
0.2521759
-1.9
30
Dibromochloromethane
A
5.00
4.37
0.5817998
0.5086927
-12.6
30
1,2-Dibromoethane (EDB)
A
5.00
4.94
0.4605409
0.4554874
-1.1
30
1,2-Dichlorobenzene
A
5.00
3.87
0.6508703
0.5041098
-22.5
30
1,3-Dichlorobenzene
A
5.00
4.17
0.6933458
0.5783773
-16.6
30
1,4-Dichlorobenzene
A
5.00
4.04
0.7007496
0.5657878
-19.3
30
Dichlorodifluoromethane (Freon 12)
A
5.00
3.44
2.828668
1.944659
-31.3
30
1,1-Dichloroethane
A
5.00
4.77
1.297848
1.238836
-4.5
30
1,2-Dichloroethane
A
5.00
5.04
0.9119952
0.9189013
0.8
30
1,1-Dichloroethylene
A
5.00
4.90
1.101545
1.079148
-2.0
30
cis-1,2-Dichloroethylene
A
5.00
4.84
0.9051853
0.8760173
-3.2
30
trans-1,2-Dichloroethylene
A
5.00
5.06
0.911153
0.9211143
1.1
30
1,2-Dichloropropane
A
5.00
4.76
0.20536
0.1955905
-4.8
30
cis- 1,3 -Dichloropropene
A
5.00
5.34
0.3167588
0.3385797
6.9
30
trans- l,3-Dichloropropene
A
5.00
5.21
0.2726974
0.2840821
4.2
30
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 1
A
5.00
3.89
2.970822
2.310317
-22.2
30
1,4-Dioxane
A
5.00
4.81
0.1168036
0.1123391
-3.8
30
Ethanol
A
5.00
6.36
0.1561683
0.1985411
27.1
30
Ethyl Acetate
A
5.00
4.07
0.2328644
0.189662
-18.6
30
Ethylbenzene
A
5.00
5.15
1.009823
1.039828
3.0
30
4-Ethyltoluene
A
5.00
5.06
1.106453
1.118737
1.1
30
Heptane
A
5.00
5.25
0.1466615
0.1541162
5.1
30
Hexachlorobutadiene
A
5.00
3.62
0.4191439
0.3032857
-27.6
30
Hexane
L
5.00
5.41
0.6733638
0.6810646
8.2
30
Page 31 of 39

icon-tes w .
ANALYTICAL LABORATORY
39 Spruce Street' East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
CONTINUING CALIBRATION CHECK
EPA TO-15
S038082-CCV 1
COMPOUND
TYPE
CONC. (ppbv)
RESPONSE FACTOR
% DIFF / DRIFT
STD
CCV
ICAL
CCV
MIN (#)
CCV
LIMIT (#)
2-Hexanone(MBK)
A
5.00
5.15
0.3284249
0.3384321
3.0
30
Isopropanol
A
5.00
4.94
1.145292
1.132606
-1.1
30
Methyl tert-Butyl Ether (MTBE)
A
5.00
4.98
1.917484
1.910409
-0.4
30
Methylene Chloride
A
5.00
4.70
0.7579443
0.7124275
-6.0
30
4-Methyl-2-pentanone (MI13K)
A
5.00
4.63
0.1500871
0.138923
-7.4
30
Naphthalene
A
5.00
3.23
1.081685
0.699427
-35.3
30
Propene
A
5.00
2.89
1.230285
0.7112836
-42.2
30
Styrene
A
5.00
5.47
0.5798817
0.6345207
9.4
30
1,1,2,2-Tetrachloroethane
A
5.00
4.91
0.6005027
0.5895886
-1.8
30
Tetrachloroethylene
A
5.00
4.27
0.4261708
0.3638698
-14.6
30
Tetrahydroforan
A
5.00
4.90
0.5608926
0.5501315
-1.9
30
Toluene
A
5.00
5.30
0.7831786
0.8296957
5.9
30
1,2,4-Trichlorobenzene
A
5.00
3.03
0.4950118
0.2997138
-39.5
30
1, 1, 1 -Trichloroethane
A
5.00
4.80
0.4218366
0.4050412
-4.0
30
1,1,2-Trichloroethane
A
5.00
5.18
0.2891513
0.2995697
3.6
30
Trichloroethylene
A
5.00
4.67
0.2879883
0.2691541
6.5
30
Trichlorofluoromethane (Freon 11)
A
5.00
4.42
2.158739
1.907229
-11.7
30
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 11
A
5.00
4.67
1.801742
1.68444
-6.5
30
1,2,4-Trimethylbenzene
A
5.00
4.77
0.9388077
0.8961935
-4.5
30
1,3,5-Trimethylbenzene
A
5.00
5.02
0.9351272
0.9380454
0.3
30
Vinyl Acetate
A
5.00
9.44
0.9347802
1.764094
88.7
30
Vinyl Chloride
A
5.00
3.88
1.06039
0.8239069
-22.3
30
m&p-Xylene
A
10.0
11.0
0.789232
0.8709078
10.3
30
o-Xylene
A
5.00
5.28
0.7966748
0.8419871
5.7
30
# Column to be used to flag Response Factor and %Diff/Drift values with an asterisk
* Values outside of QC limits
Page 32 of 39

icon-tes w .
ANALYTICAL LABORATORY
39 Spruce Street' East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
CONTINUING CALIBRATION CHECK
EPA TO-15
S038102-CCV 1
COMPOUND
TYPE
CONC. (ppbv)
RESPONSE FACTOR
% DIFF / DRIFT
STD
CCV
ICAL
CCV
MIN (#)
CCV
LIMIT (#)
Acetone
A
5.00
4.27
1.134293
0.9694065
-14.5
30
Benzene
A
5.00
4.86
0.5688217
0.5530905
-2.8
30
Benzyl chloride
A
5.00
6.36
0.7404793
0.9418223
27.2
30
Bromodichloromethane
A
5.00
5.22
0.4444491
0.4637428
4.3
30
Bromoform
A
5.00
5.19
0.5091155
0.5280642
3.7
30
Bromomethane
A
5.00
5.00
0.9958814
0.9955165
-0.04
30
1,3-Butadiene
A
5.00
4.41
0.6515652
0.5748275
-11.8
30
2-Butanone (MEK)
A
5.00
4.65
1.161511
1.079778
-7.0
30
Carbon Disulfide
A
5.00
5.98
1.981312
2.368245
19.5
30
Carbon Tetrachloride
A
5.00
4.96
0.4566571
0.4528897
-0.8
30
Chlorobenzene
A
5.00
5.12
0.7255923
0.743072
2.4
30
Chloroethane
A
5.00
4.69
0.4347076
0.4076929
-6.2
30
Chloroform
A
5.00
5.67
1.662216
1.885877
13.5
30
Chloromethane
A
5.00
3.49
1.093038
0.7637099
-30.1
30
Cyclohexane
A
5.00
4.72
0.2571574
0.2425824
-5.7
30
Dibromochloromethane
A
5.00
4.90
0.5817998
0.5704954
-1.9
30
1,2-Dibromoethane (EDB)
A
5.00
5.27
0.4605409
0.4853451
5.4
30
1,2-Dichlorobenzene
A
5.00
5.22
0.6508703
0.6801463
4.5
30
1,3-Dichlorobenzene
A
5.00
5.44
0.6933458
0.7541512
8.8
30
1,4-Dichlorobenzene
A
5.00
5.29
0.7007496
0.7410198
5.7
30
Dichlorodifluoromethane (Freon 12)
A
5.00
4.20
2.828668
2.379091
-15.9
30
1,1-Dichloroethane
A
5.00
5.14
1.297848
1.332915
2.7
30
1,2-Dichloroethane
A
5.00
5.80
0.9119952
1.057595
16.0
30
1,1-Dichloroethylene
A
5.00
5.09
1.101545
1.121205
1.8
30
cis-1,2-Dichloroethylene
A
5.00
4.91
0.9051853
0.8887639
-1.8
30
trans-1,2-Dichloroethylene
A
5.00
5.14
0.911153
0.9358598
2.7
30
1,2-Dichloropropane
A
5.00
4.36
0.20536
0.1790502
-12.8
30
cis- 1,3 -Dichloropropene
A
5.00
5.25
0.3167588
0.3324098
4.9
30
trans- l,3-Dichloropropene
A
5.00
5.20
0.2726974
0.2837554
4.1
30
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 1
A
5.00
4.57
2.970822
2.715202
-8.6
30
1,4-Dioxane
A
5.00
4.90
0.1168036
0.1144357
-2.0
30
Ethanol
A
5.00
4.52
0.1561683
0.1412877
-9.5
30
Ethyl Acetate
A
5.00
4.16
0.2328644
0.1935076
-16.9
30
Ethylbenzene
A
5.00
5.16
1.009823
1.042725
3.3
30
4-Ethyltoluene
A
5.00
5.57
1.106453
1.231797
11.3
30
Heptane
A
5.00
4.73
0.1466615
0.1387276
-5.4
30
Hexachlorobutadiene
4
5.00
4.50
0.4191439
0.3769145
-10.1
30
Hexane
L
5.00
5.36
0.6733638
0.675531
7.2
30
Page 33 of 39

icon-tes w .
ANALYTICAL LABORATORY
39 Spruce Street' East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
CONTINUING CALIBRATION CHECK
EPA TO-15
S038102-CCV 1
COMPOUND
TYPE
CONC. (ppbv)
RESPONSE FACTOR
% DIFF / DRIFT
STD
CCV
ICAL
CCV
MIN (#)
CCV
LIMIT (#)
2-Hexanone(MBK)
A
5.00
4.67
0.3284249
0.3068106
-6.6
30
Isopropanol
A
5.00
4.22
1.145292
0.9663139
-15.6
30
Methyl tert-Butyl Ether (MTBE)
A
5.00
5.47
1.917484
2.097078
9.4
30
Methylene Chloride
A
5.00
4.86
0.7579443
0.7374186
-2.7
30
4-Methyl-2-pentanone (MI13K)
A
5.00
4.43
0.1500871
0.1329393
-11.4
30
Naphthalene
A
5.00
5.53
1.081685
1.1955
10.5
30
Propene
A
5.00
2.97
1.230285
0.7313151
-40.6
30
Styrene
A
5.00
6.05
0.5798817
0.701331
20.9
30
1,1,2,2-Tetrachloroethane
A
5.00
5.60
0.6005027
0.6727717
12.0
30
Tetrachloroethylene
A
5.00
4.60
0.4261708
0.3921963
-8.0
30
Tetrahydroforan
A
5.00
4.88
0.5608926
0.5473844
-2.4
30
Toluene
A
5.00
5.12
0.7831786
0.802451
2.5
30
1,2,4-Trichlorobenzene
A
5.00
5.07
0.4950118
0.5016553
1.3
30
1, 1, 1 -Trichloroethane
A
5.00
5.20
0.4218366
0.438546
4.0
30
1,1,2-Trichloroethane
A
5.00
5.34
0.2891513
0.3090068
6.9
30
Trichloroethylene
A
5.00
4.76
0.2879883
0.2743051
4.8
30
Trichlorofluoromethane (Freon 11)
A
5.00
5.38
2.158739
2.32377
7.6
30
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 11
A
5.00
5.63
1.801742
2.027355
12.5
30
1,2,4-Trimethylbenzene
A
5.00
5.54
0.9388077
1.039329
10.7
30
1,3,5-Trimethylbenzene
A
5.00
5.68
0.9351272
1.063032
13.7
30
Vinyl Acetate
A
5.00
7.91
0.9347802
1.478129
58.1
30
Vinyl Chloride
A
5.00
4.10
1.06039
0.8703446
-17.9
30
m&p-Xylene
A
10.0
10.8
0.789232
0.853444
8.1
30
o-Xylene
A
5.00
5.60
0.7966748
0.8918382
11.9
30
# Column to be used to flag Response Factor and %Diff/Drift values with an asterisk
* Values outside of QC limits
Page 34 of 39

icon-tes w .
ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ' FAX [phone] " TEL. [phone]
CERTIFICATIONS
Certified Analyses included in this Report
Analyte
EPA TO-15 in Air
Acetone
Benzene
Benzyl chloride
Bromodichloromethane
Bromoform
Bromomethane
1,3-Butadiene
2-Butanone (MEK)
Carbon Disulfide
Carbon Tetrachloride
Chlorobenzene
Chloroethane
Chloroform
Chloromethane
Cyclohexane
Dibromochloromethane
1,2-Dibromoethane (EDB)
1,2-Dichlorobenzene
1,3-Dichlorobenzene
1,4-Dichlorobenzene
Dichlorodifluoromethane (Freon 12)
1,1-Dichloroethane
1,2-Dichloroethane
1,1-Dichloroethylene
cis-1,2-Dichloroethylene
trans- l,2-Dichloro ethylene
1,2-Dichloropropane
cis- 1,3 -Dichloropropene
trans- 1, 3 -Dichloropropene
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)
1,4-Dioxane
Ethanol
Ethyl Acetate
Ethylbenzene
4-Ethyltoluene
Heptane
Hexachlorobutadiene
Hexane
2-Hexanone (MBK)
Isopropanol
Methyl tart -Butyl Ether (MTBE)
Methylene Chloride
4-Methyl-2-pentanone (MIBK)
Naphthalene
Propene
Styrene
1,1,2,2-Tetrachloroethane
Certifications
AIHA,NY,ME,NH
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,NJ,NY,ME,NH,VA
AIHA,NJ,NY,ME,NH,VA
AIHA,FL,NJ,NY,ME,NH
AIHA,NJ,NY,ME,NH,VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,NJ,NY,ME,NH,VA
AIHA,NY,ME,NH
AIHA,NJ,NY,ME,NH
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,NJ,NY,ME,NH
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,NY,ME,NH
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,FL,NY,ME,NH,VA
AIHA,NJ,NY,ME,NH,VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,NY,ME,NH
AIHA,NJ,NY,ME,NH,VA
AIHA,NJ,NY,ME,NH,VA
AIHA
AIHA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,NJ
AIHA,NJ,NY,ME,NH,VA
AIHA,NJ,NY,ME,NH,VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA
AIHA,NY,ME,NH
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH
NY,ME,NH
AIHA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH,VA
Page 35 of 39

icon-tes w .
ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ' FAX [phone] " TEL. [phone]
CERTIFICATIONS
Certified Analyses included in this Report
Analyte Certifications
EPA TO-15 in Air
Tetrachloroethylene
AIHA,FL,NJ,NY,ME,NH,VA
Tetrahydrofuran
AIHA
Toluene
AIHA,FL,NJ,NYM E,NH,VA
1,2,4-Trichlorobenzene
AIHA,NJ,NY,ME,NH,VA
1, 1, 1 -Trichloroethane
AIHA,FL,NJ,NY,ME,NH,VA
1,1,2-Trichloroethane
AIHA,FL,NJ,NY,ME,NH,VA
Trichloroethylene
AIHA,FL,NJ,NY,ME,NH,VA
Trichlorofluoromethane (Freon 11)
AIHA,NY,ME,NH
1,1,2-Trichloro-1,2,2-ttifluoroethane
(Freon 113)
AIHA,NJ,NY,ME,NH,VA
1,2,4-Trimethylbenzene
AIHA,NJ,NY,ME,NH
1,3,5-Trimethylbenzene
AIHA,NJ,NY,ME,NH
Vinyl Acetate
AIHA,FLNJ,NY,ME,NH,VA
Vinyl Chloride
AIHA,FLNJ,NY,ME,NH,VA
m&p-Xylene
AIHA,FL,NJ,NY,ME,NH,VA
o-Xylene
AIHA,FL,NJ,NY,ME,NH,VA
The CON -TEST Environmental
Laboratory operates under the following certifications and accreditations:
Code
Description
Number
Expires
AIHA
AIHA-LAP, LLC - ISO17025:2005
100033
03/l/2020
MA
Massachusetts DEP
M-MA100
06/30/2020
CT
Connecticut Department of Publilc Health
PH-0567
09/30/2019
NY
New York State Department of Health
10899 NELAP
04/l/2020
NH-S
New Hampshire Environmental Lab
2516 NELAP
02/5/2020
RI
Rhode Island Department of Health
LA000112
12/30/2019
NC
North Carolina Div. of Water Quality
652
12/31/2019
NJ
New Jersey DEP
MA007 NELAP
06/30/2020
FL
Florida Department of Health
E871027 NELAP
06/30/2020
VT
Vermont Department of Health Lead Laboratory
LL015036
07/30/2020
ME
State of Maine
2011028
06/9/2021
VA
Commonwealth of Virginia
460217
12/14/2019
NH-P
New Hampshire Environmental Lab
2557 NELAP
09/6/2019
VT-DW
Vermont Department of Health Drinking
Water
VT-255716
06/12/2020
NC-DW
North Carolina Department of Health
25703
07/31/2019
PA
Commonwealth of Pennsylvania DEP
68-05812
06/30/2020
Page 36 of 39

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7755)97081317
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1, tiC
6/28/20191
?/02111�019
EAST L0IJGMEAD0kN, MA
Shipment Facts
TRACKING NUMBER
SERVICE
REFERENCE
77559 /080983
r edEx Ground
80
MASTER TRACKING NUMBER
WEIGHT
DIMENSIONS
775597080799
12 Ibs / S_44 kgs
19x E 4x1 C in.
TOTAL PIECES
TOTAL SHIPMENT WEIGHT
TERMS
3
3O bs 11b.33 kg,,
Th1rd !-aiv
PACKAGING
STANDARD TRANSIT
SHIP DATE
Package
0
7/02/2019
Fri 6/28/2019
77-1 hrips:llwww.fedex.com/apps/fedextrack/?action=track&tracknumbers=775597080983&locale=en_US&cntry_code=us Page 38 of 39

Received By
11
Date
How were the samples
In Cooler
received?
In Box
Were samples within Temperature
_
By Gun
Compliance? 2-6°C
By Bla
Was Custody Seal Intact?
Was COC Relinquished ?
`[
Are there any loose caps/valves on any samples?
Is COC in ink/ Legible? X
D'd CO I 1 Client
Analy
i C nc ude a
Pertinent Information? Project t
Are Sample Labels filled out and legible?
Are there Rushes? E
Samples are received within holding time?
Proper Media Used?
Are there Trip Blanks?
-T ID-- \1 C Time
On lee No Ice
Ambient Melted Ice
# Actual Temp -
nk # Actual Temp -
Were Samples Tampered with? INAr
Does Chain Agree With Samples?
� ..�---
sis -7 Sampler Name 7-
ID`s j Collection Dates/Times -T—
Who was notified?
Individually Certified Cans? .f
Is there enough Volume? -(
--
Summa Cans
L
5n�
Nut/Ferrule
IC Train
Tedlar Baqs
Tubing
TO-17 Tubes
T-Connector
Radiello
S rin e
PufsrrO-11 s I
I TedIar

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

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ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
August 5, 2019
Katie Lippard
Mid -Atlantic Associates, Inc. - Raleigh, NC
409 Rogers View Court
Raleigh, NC 27610
Project Location: Raleigh, NC
Client Job Number:
Project Number: R2667.01
Laboratory Work Order Number: 19G1535
Enclosed are results of analyses for samples received by the laboratory on July 25, 2019. If you have any questions concerning
this report, please feel free to contact me.
Sincerely,
I,&, �. A��
Kerry K. McGee
Project Manager
QA Officer
Katherine Allen
Laboratory Manager
Daren Damboragian
Page 1 of 23

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ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
Mid -Atlantic Associates, Inc. - Raleigh, NC REPORT DATE: 8/5/2019
409 Rogers View Court
Raleigh, NC 27610 PURCHASE ORDER NUMBER:
ATTN: Katie Lippard
PROJECT NUMBER: R2667.01
ANALYTICAL SUMMARY
WORK ORDER NUMBER: 19G1535
The results of analyses performed on the following samples submitted to the CON -TEST Analytical Laboratory are found in this report.
PROJECT LOCATION: Raleigh, NC
FIELD SAMPLE # LAB ID: MATRIX SAMPLE DESCRIPTION TEST SUB LAB
IA-1
19G1535-01
Indoor air
EPA TO-15
IA-2
19G1535-02
Indoor air
EPA TO-15
IA-3
19G1535-03
Indoor air
EPA TO-15
IA-4
19G1535-04
Indoor air
EPA TO-15
AMB-1
19G1535-05
Ambient Air
EPATO-15
IA-10
19G1535-06
Indoor air
EPA TO-15
Page 2 of 23

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ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
CASE NARRATIVE SUMMARY
All reported results are within defined laboratory quality control objectives unless listed below or otherwise qualified in this report.
EPA TO-15
Qualifications:
Compound fails the method requirement of 70-l3O% recovery for the LCS. Is classified by the lab as a difficult compound and passes the in
house limits of 50-150%.
Analyte & Samples(s) Qualified:
Naphthalene
19G1535-01[IA-1], 19G1535-02[IA-2], 19G1535-03[IA-3], 19G1535-04[IA-4], 19G1535-05[AMB-1], 19G1535-06[IA-10], B236986-BLKI, B236986-BSI
The results of analyses reported only relate to samples submitted to the Con -Test Analytical Laboratory for testing.
I certify that the analyses listed above, unless specifically listed as subcontracted, if any, were performed under my direction according to the approved methodologies listed
in this document, and that based upon my inquiry of those individuals immediately responsible for obtaining the information, the material contained in this report is, to the
best of my knowledge and belief, accurate and complete.
d�
Lisa A. Worthington
Technical Representative
Page 3 of 23

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ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Raleigh, NC
Sample Description/Location:
Work Order: 19G1535
Date Received: 7/25/2019
Sub Description/Location:
Initial Vacuum(in Hg): -29
Field Sample #: IA-1
Canister ID: 1504
Final Vacuum(in Hg): -7.5
Sample ID: 19G1535-01
Canister Size: 6 liter
Receipt Vacuum(in Hg): -7.4
Sample Matrix: Indoor air
Flow Controller ID: 3099
Flow Controller Type: Fixed -Orifice
Sampled: 7/24/2019 16:54
Sample Type: 8 hr
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv
ug/m3
Date/Time
Analyte
Results
RL
MDL
Flag/Qual Results
ILL
MDL
Dilution
Analyzed
Analyst
Acetone
33
1.4
0.49
79
3.3
1.2
0.702
7/31/19 18:59
BRF
Benzene
0.11
0.035
0.014
0.36
0.11
0.046
0.702
7/31/19 18:59
BRF
2-Butanone (MEK)
42
8.0
0.31
120
24
0.92
4
8/1/19 9:07
BRF
Carbon Disulfide
ND
0.35
0.024
ND
1.1
0.075
0.702
7/31/19 18:59
BRF
1,3-Dichlorobenzene
ND
0.035
0.018
ND
0.21
0.11
0.702
7/31/19 18:59
BRF
Dichlorodifluoromethane (Freon 12)
0.47
0.035
0.015
2.3
0.17
0.075
0.702
7/31/19 18:59
BRF
cis-1,2-Dichloroethylene
ND
0.035
0.014
ND
0.14
0.057
0.702
7/31/19 18:59
BRF
trans-1,2-Dichloroethylene
ND
0.035
0.014
ND
0.14
0.056
0.702
7/31/19 18:59
BRF
Ethanol
11
1.4
0.63
22
2.6
1.2
0.702
7/31/19 18:59
BRF
Ethyl Acetate
ND
0.035
0.026
ND
0.13
0.094
0.702
7/31/19 18:59
BRF
Ethylbenzene
2.3
0.035
0.020
10
0.15
0.088
0.702
7/31/19 18:59
BRF
4-Ethyltoluene
0.65
0.035
0.021
3.2
0.17
0.11
0.702
7/31/19 18:59
BRF
Heptane
1.4
0.035
0.021
5.6
0.14
0.085
0.702
7/31/19 18:59
BRF
Hexane
ND
1.4
0.062
ND
4.9
0.22
0.702
7/31/19 18:59
BRF
Isopropanol
ND
1.4
0.043
ND
3.4
0.11
0.702
7/31/19 18:59
BRF
Methylene Chloride
ND
0.35
0.043
ND
1.2
0.15
0.702
7/31/19 18:59
BRF
Naphthalene
1.7
0.035
0.027
Z-01 9.0
0.18
0.14
0.702
7/31/19 18:59
BRF
Styrene
ND
0.035
0.022
ND
0.15
0.092
0.702
7/31/19 18:59
BRF
Tetrachloroethylene
0.13
0.035
0.020
0.89
0.24
0.13
0.702
7/31/19 18:59
BRF
Tetrahydrofuran
0.72
0.035
0.023
2.1
0.10
0.069
0.702
7/31/19 18:59
BRF
Toluene
16
0.035
0.018
61
0.13
0.068
0.702
7/31/19 18:59
BRF
Trichloroethylene
ND
0.035
0.014
ND
0.19
0.076
0.702
7/31/19 18:59
BRF
Trichlorofluoromethane (Freon 11)
0.42
0.14
0.020
2.4
0.79
0.11
0.702
7/31/19 18:59
BRF
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
ND
0.14
0.021
ND
1.1
0.16
0.702
7/31/19 18:59
BRF
1,3,5-Trimethylbenzene
0.44
0.035
0.022
2.1
0.17
0.11
0.702
7/31/19 18:59
BRF
Vinyl Chloride
ND
0.035
0.022
ND
0.090
0.057
0.702
7/31/19 18:59
BRF
m&p-Xylene
14
0.070
0.040
61
0.30
0.18
0.702
7/31/19 18:59
BRF
o-Xylene
6.0
0.035
0.022
26
0.15
0.095
0.702
7/31/19 18:59
BRF
Surrogates
4-Bromofluorobenzene (1)
4-Bromofluorobenzene (1)
% Recovery % REC Limits
104
99.1
70-130
70-130
7/31/19 18:59
8/1/19 9:07
Page 4 of 23

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ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Raleigh, NC
Sample Description/Location:
Work Order: 19G1535
Date Received: 7/25/2019
Sub Description/Location:
Initial Vacuum(in Hg): -28.5
Field Sample #: IA-2
Canister ID: 1002
Final Vacuum(in Hg): -7
Sample ID: 19G1535-02
Canister Size: 6 liter
Receipt Vacuum(in Hg): -6.8
Sample Matrix: Indoor air
Flow Controller ID: 3593
Flow Controller Type: Fixed -Orifice
Sampled: 7/24/2019 16:53
Sample Type: 8 hr
Flow Controller Calibration
RPD Pre and Post -Sampling:
Analyte
Results
ppbv
RL
EPA TO-15
MDL
Flag/Qual Results
ug/m3
RI
MDL
Dilution
Date/Time
Analyzed
Analyst
Acetone
31
1.4
0.49
74
3.3
1.2
0.702
7/31/19 19:35
BRF
Benzene
0.24
0.035
0.014
0.78
0.11
0.046
0.702
7/31/19 19:35
BRF
2-Butanone (MEK)
25
1.4
0.055
74
4.1
0.16
0.702
7/31/19 19:35
BRF
Carbon Disulfide
ND
0.35
0.024
ND
1.1
0.075
0.702
7/31/19 19:35
BRF
1,3-Dichlorobenzene
ND
0.035
0.018
ND
0.21
0.11
0.702
7/31/19 19:35
BRF
Dichlorodiflumomethane (Freon 12)
0.34
0.035
0.015
1.7
0.17
0.075
0.702
7/31/19 19:35
BRF
cis-1,2-Dichloroethylene
ND
0.035
0.014
ND
0.14
0.057
0.702
7/31/19 19:35
BRF
trans-1,2-Dichloroethylene
ND
0.035
0.014
ND
0.14
0.056
0.702
7/31/19 19:35
BRF
Ethanol
10
1.4
0.63
19
2.6
1.2
0.702
7/31/19 19:35
BRF
Ethyl Acetate
ND
0.035
0.026
ND
0.13
0.094
0.702
7/31/19 19:35
BRF
Ethylbenzene
2.2
0.035
0.020
9.5
0.15
0.088
0.702
7/31/19 19:35
BRF
4-Ethyltoluene
0.62
0.035
0.021
3.1
0.17
0.11
0.702
7/31/19 19:35
BRF
Heptane
1.3
0.035
0.021
5.5
0.14
0.085
0.702
7/31/19 19:35
BRF
Hexane
ND
1.4
0.062
ND
4.9
0.22
0.702
7/31/19 19:35
BRF
Isopropanol
3.1
1.4
0.043
7.7
3.4
0.11
0.702
7/31/19 19:35
BRF
Methylene Chloride
ND
0.35
0.043
ND
1.2
0.15
0.702
7/31/19 19:35
BRF
Naphthalene
1.6
0.035
0.027
Z-01 8.6
0.18
0.14
0.702
7/31/19 19:35
BRF
Styrene
ND
0.035
0.022
ND
0.15
0.092
0.702
7/31/19 19:35
BRF
Tetrachloroethylene
0.13
0.035
0.020
0.91
0.24
0.13
0.702
7/31/19 19:35
BRF
Tetrahydrofuran
0.67
0.035
0.023
2.0
0.10
0.069
0.702
7/31/19 19:35
BRF
Toluene
16
0.035
0.018
61
0.13
0.068
0.702
7/31/19 19:35
BRF
Trichloroethylene
ND
0.035
0.014
ND
0.19
0.076
0.702
7/31/19 19:35
BRF
Trichlorofluoromethane (Freon 11)
0.40
0.14
0.020
2.2
0.79
0.11
0.702
7/31/19 19:35
BRF
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
ND
0.14
0.021
ND
1.1
0.16
0.702
7/31/19 19:35
BRF
1,3,5-Trimethylbenzene
0.42
0.035
0.022
2.0
0.17
0.11
0.702
7/31/19 19:35
BRF
Vinyl Chloride
ND
0.035
0.022
ND
0.090
0.057
0.702
7/31/19 19:35
BRF
m&p-Xylene
13
0.070
0.040
57
0.30
0.18
0.702
7/31/19 19:35
BRF
o-Xylene
5.7
0.035
0.022
25
0.15
0.095
0.702
7/31/19 19:35
BRF
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene(1) 105 70-130 7/31/19 19:35
Page 5 of 23

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ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Raleigh, NC
Sample Description/Location:
Work Order: 19G1535
Date Received: 7/25/2019
Sub Description/Location:
Initial Vacuum(in Hg): -28
Field Sample #: IA-3
Canister ID: 1123
Final Vacuum(in Hg): -8
Sample ID: 19G1535-03
Canister Size: 6 liter
Receipt Vacuum(in Hg): -7.5
Sample Matrix: Indoor air
Flow Controller ID: 3587
Flow Controller Type: Fixed -Orifice
Sampled: 7/24/2019 16:56
Sample Type: 8 hr
Flow Controller Calibration
RPD Pre and Post -Sampling:
Analyte
Results
ppbv
RL
EPA TO-15
MDL
Flag/Qual Results
ug/m3
RL
MDL
Dilution
Date/Time
Analyzed
Analyst
Acetone
44
8.0
2.8
100
19
6.6
4
8/l/19 9:36
BRF
Benzene
0.12
0.035
0.014
0.39
0.11
0.046
0.702
7/31/19 20:10
BRF
2-Butanone (MEK)
46
8.0
0.31
140
24
0.92
4
8/1/19 9:36
BRF
Carbon Disulfide
ND
0.35
0.024
ND
1.1
0.075
0.702
7/31/19 20:10
BRF
1,3-Dichlorobenzene
ND
0.035
0.018
ND
0.21
0.11
0.702
7/31/19 20:10
BRF
Dichlorodiflumomethane (Freon 12)
0.42
0.035
0.015
2.1
0.17
0.075
0.702
7/31/19 20:10
BRF
cis-1,2-Dichloroethylene
ND
0.035
0.014
ND
0.14
0.057
0.702
7/31/19 20:10
BRF
trans-1,2-Dichloroethylene
ND
0.035
0.014
ND
0.14
0.056
0.702
7/31/19 20:10
BRF
Ethanol
13
1.4
0.63
25
2.6
1.2
0.702
7/31/19 20:10
BRF
Ethyl Acetate
ND
0.035
0.026
ND
0.13
0.094
0.702
7/31/19 20:10
BRF
Ethylbenzene
3.3
0.035
0.020
14
0.15
0.088
0.702
7/31/19 20:10
BRF
4-Ethyltoluene
0.79
0.035
0.021
3.9
0.17
0.11
0.702
7/31/19 20:10
BRF
Heptane
2.2
0.035
0.021
8.9
0.14
0.085
0.702
7/31/19 20:10
BRF
Hexane
1.4
1.4
0.062
5.1
4.9
0.22
0.702
7/31/19 20:10
BRF
Isopropanol
2.5
1.4
0.043
6.2
3.4
0.11
0.702
7/31/19 20:10
BRF
Methylene Chloride
ND
0.35
0.043
ND
1.2
0.15
0.702
7/31/19 20:10
BRF
Naphthalene
2.0
0.035
0.027
Z-01 10
0.18
0.14
0.702
7/31/19 20:10
BRF
Styrene
ND
0.035
0.022
ND
0.15
0.092
0.702
7/31/19 20:10
BRF
Tetrachloroethylene
0.19
0.035
0.020
1.3
0.24
0.13
0.702
7/31/19 20:10
BRF
Tetrahydrofuran
0.77
0.035
0.023
2.3
0.10
0.069
0.702
7/31/19 20:10
BRF
Toluene
39
0.20
0.10
150
0.75
0.39
4
8/l/19 9:36
BRF
Trichloroethylene
ND
0.035
0.014
ND
0.19
0.076
0.702
7/31/19 20:10
BRF
Trichlorofluoromethane (Freon 11)
0.58
0.14
0.020
3.2
0.79
0.11
0.702
7/31/19 20:10
BRF
1,1,2-Trichloro-1,2,2-(rifluoroethane (Freon 113)
ND
0.14
0.021
ND
1.1
0.16
0.702
7/31/19 20:10
BRF
1,3,5-Trimethylbenzene
0.51
0.035
0.022
2.5
0.17
0.11
0.702
7/31/19 20:10
BRF
Vinyl Chloride
ND
0.035
0.022
ND
0.090
0.057
0.702
7/31/19 20:10
BRF
m&p-Xylene
20
0.070
0.040
88
0.30
0.18
0.702
7/31/19 20:10
BRF
o-Xylene
8.2
0.035
0.022
36
0.15
0.095
0.702
7/31/19 20:10
BRF
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1) 101 70-130 8/1/19 9:36
4-Bromofluorobenzene(1) 102 70-130 7/31/19 20:10
Page 6 of 23

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ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Raleigh, NC
Sample Description/Location:
Work Order: 19G1535
Date Received: 7/25/2019
Sub Description/Location:
Initial Vacuum(in Hg): -30
Field Sample #: IA-4
Canister ID: 1486
Final Vacuum(in Hg): -10
Sample ID: 19G1535-04
Canister Size: 6 liter
Receipt Vacuum(in Hg): -9.5
Sample Matrix: Indoor air
Flow Controller ID: 3592
Flow Controller Type: Fixed -Orifice
Sampled: 7/24/2019 16:47
Sample Type: 8 hr
Flow Controller Calibration
RPD Pre and Post -Sampling:
Analyte
Results
ppbv
RL
EPA TO-15
MDL
Flag/Qual Results
ug/m3
RI
MDL
Dilution
Date/Time
Analyzed
Analyst
Acetone
32
1.4
0.49
75
3.3
1.2
0.702
7/31/19 20:46
BRF
Benzene
0.10
0.035
0.014
0.32
0.11
0.046
0.702
7/31/19 20:46
BRF
2-Butanone (MEK)
46
8.0
0.31
140
24
0.92
4
8/1/19 10:05
BRF
Carbon Disulfide
ND
0.35
0.024
ND
1.1
0.075
0.702
7/31/19 20:46
BRF
1,3-Dichlorobenzene
ND
0.035
0.018
ND
0.21
0.11
0.702
7/31/19 20:46
BRF
Dichlorodiflumomethane (Freon 12)
0.28
0.035
0.015
1.4
0.17
0.075
0.702
7/31/19 20:46
BRF
cis-1,2-Dichloroethylene
ND
0.035
0.014
ND
0.14
0.057
0.702
7/31/19 20:46
BRF
trans-1,2-Dichloroethylene
ND
0.035
0.014
ND
0.14
0.056
0.702
7/31/19 20:46
BRF
Ethanol
10
1.4
0.63
19
2.6
1.2
0.702
7/31/19 20:46
BRF
Ethyl Acetate
ND
0.035
0.026
ND
0.13
0.094
0.702
7/31/19 20:46
BRF
Ethylbenzene
1.8
0.035
0.020
7.8
0.15
0.088
0.702
7/31/19 20:46
BRF
4-Ethyltoluene
0.58
0.035
0.021
2.8
0.17
0.11
0.702
7/31/19 20:46
BRF
Heptane
0.94
0.035
0.021
3.8
0.14
0.085
0.702
7/31/19 20:46
BRF
Hexane
ND
1.4
0.062
ND
4.9
0.22
0.702
7/31/19 20:46
BRF
Isopropanol
ND
1.4
0.043
ND
3.4
0.11
0.702
7/31/19 20:46
BRF
Methylene Chloride
ND
0.35
0.043
ND
1.2
0.15
0.702
7/31/19 20:46
BRF
Naphthalene
1.5
0.035
0.027
Z-01 7.7
0.18
0.14
0.702
7/31/19 20:46
BRF
Styrene
ND
0.035
0.022
ND
0.15
0.092
0.702
7/31/19 20:46
BRF
Tetrachloroethylene
0.11
0.035
0.020
0.76
0.24
0.13
0.702
7/31/19 20:46
BRF
Tetrahydrofuran
0.59
0.035
0.023
1.7
0.10
0.069
0.702
7/31/19 20:46
BRF
Toluene
8.1
0.035
0.018
31
0.13
0.068
0.702
7/31/19 20:46
BRF
Trichloroethylene
ND
0.035
0.014
ND
0.19
0.076
0.702
7/31/19 20:46
BRF
Trichlorofluoromethane (Freon 11)
0.37
0.14
0.020
2.1
0.79
0.11
0.702
7/31/19 20:46
BRF
1,1,2-Trichloro-1,2,2-(rifluoroethane (Freon 113)
ND
0.14
0.021
ND
1.1
0.16
0.702
7/31/19 20:46
BRF
1,3,5-Trimethylbenzene
0.41
0.035
0.022
2.0
0.17
0.11
0.702
7/31/19 20:46
BRF
Vinyl Chloride
ND
0.035
0.022
ND
0.090
0.057
0.702
7/31/19 20:46
BRF
m&p-Xylene
10
0.070
0.040
45
0.30
0.18
0.702
7/31/19 20:46
BRF
o-Xylene
4.4
0.035
0.022
19
0.15
0.095
0.702
7/31/19 20:46
BRF
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1) 99.8 70-130 8/1/19 10:05
4-Bromofluorobenzene(1) 101 70-130 7/31/19 20:46
Page 7 of 23

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ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Raleigh, NC
Sample Description/Location:
Work Order: 19G1535
Date Received: 7/25/2019
Sub Description/Location:
Initial Vacuum(in Hg): -28
Field Sample #: AMB-1
Canister ID: 1015
Final Vacuum(in Hg): -5
Sample ID: 19G1535-05
Canister Size: 6 liter
Receipt Vacuum(in Hg): -6.6
Sample Matrix: Ambient Air
Flow Controller ID: 3612
Flow Controller Type: Fixed -Orifice
Sampled: 7/24/2019 16:44
Sample Type: 8 hr
Flow Controller Calibration
RPD Pre and Post -Sampling:
Analyte
Results
ppbv
RL
EPA TO-15
MDL
Flag/Qual Results
ug/m3
RL
MDL
Dilution
Date/Time
Analyzed
Analyst
Acetone
3.9
1.4
0.49
9.4
3.3
1.2
0.702
7/31/19 21:21
BRF
Benzene
0.070
0.035
0.014
0.22
0.11
0.046
0.702
7/31/19 21:21
BRF
2-Butanone (MEK)
ND
1.4
0.055
ND
4.1
0.16
0.702
7/31/19 21:21
BRF
Carbon Disulfide
ND
0.35
0.024
ND
1.1
0.075
0.702
7/31/19 21:21
BRF
1,3-Dichlorobenzene
ND
0.035
0.018
ND
0.21
0.11
0.702
7/31/19 21:21
BRF
Dichlorodiflumomethane (Freon 12)
0.41
0.035
0.015
2.0
0.17
0.075
0.702
7/31/19 21:21
BRF
cis-1,2-Dichloroethylene
ND
0.035
0.014
ND
0.14
0.057
0.702
7/31/19 21:21
BRF
trans-1,2-Dichloroethylene
ND
0.035
0.014
ND
0.14
0.056
0.702
7/31/19 21:21
BRF
Ethanol
2.6
1.4
0.63
5.0
2.6
1.2
0.702
7/31/19 21:21
BRF
Ethyl Acetate
ND
0.035
0.026
ND
0.13
0.094
0.702
7/31/19 21:21
BRF
Ethylbenzene
ND
0.035
0.020
ND
0.15
0.088
0.702
7/31/19 21:21
BRF
4-Ethyltoluene
ND
0.035
0.021
ND
0.17
0.11
0.702
7/31/19 21:21
BRF
Heptane
0.050
0.035
0.021
0.20
0.14
0.085
0.702
7/31/19 21:21
BRF
Hexane
ND
1.4
0.062
ND
4.9
0.22
0.702
7/31/19 21:21
BRF
Isopropanol
ND
1.4
0.043
ND
3.4
0.11
0.702
7/31/19 21:21
BRF
Methylene Chloride
ND
0.35
0.043
ND
1.2
0.15
0.702
7/31/19 21:21
BRF
Naphthalene
0.13
0.035
0.027
Z-01 0.67
0.18
0.14
0.702
7/31/19 21:21
BRF
Styrene
ND
0.035
0.022
ND
0.15
0.092
0.702
7/31/19 21:21
BRF
Tetrachloroethylene
ND
0.035
0.020
ND
0.24
0.13
0.702
7/31/19 21:21
BRF
Tetrahydrofuran
ND
0.035
0.023
ND
0.10
0.069
0.702
7/31/19 21:21
BRF
Toluene
0.29
0.035
0.018
1.1
0.13
0.068
0.702
7/31/19 21:21
BRF
Trichloroethylene
ND
0.035
0.014
ND
0.19
0.076
0.702
7/31/19 21:21
BRF
Trichlorofluoromethane (Freon 11)
0.18
0.14
0.020
1.0
0.79
0.11
0.702
7/31/19 21:21
BRF
1,1,2-Trichloro-1,2,2-(rifluoroethane (Freon 113)
ND
0.14
0.021
ND
1.1
0.16
0.702
7/31/19 21:21
BRF
1,3,5-Trimethylbenzene
ND
0.035
0.022
ND
0.17
0.11
0.702
7/31/19 21:21
BRF
Vinyl Chloride
ND
0.035
0.022
ND
0.090
0.057
0.702
7/31/19 21:21
BRF
m&p-Xylene
0.094
0.070
0.040
0.41
0.30
0.18
0.702
7/31/19 21:21
BRF
o-Xylene
0.042
0.035
0.022
0.18
0.15
0.095
0.702
7/31/19 21:21
BRF
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1) 100 70-130 7/31/19 21:21
Page 8 of 23

icon-tes w .
ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: Raleigh, NC
Sample Description/Location:
Work Order: 19G1535
Date Received: 7/25/2019
Sub Description/Location:
Initial Vacuum(in Hg): -29
Field Sample #: IA-10
Canister ID: 1878
Final Vacuum(in Hg): -6
Sample ID: 19G1535-06
Canister Size: 6 liter
Receipt Vacuum(in Hg): -6.1
Sample Matrix: Indoor air
Flow Controller ID: 3663
Flow Controller Type: Fixed -Orifice
Sampled: 7/24/2019 16:54
Sample Type: 8 hr
Flow Controller Calibration
RPD Pre and Post -Sampling:
Analyte
Results
ppbv
RL
EPA TO-15
MDL
Flag/Qual Results
ug/m3
RL
MDL
Dilution
Date/Time
Analyzed
Analyst
Acetone
30
1.4
0.49
70
3.3
1.2
0.702
7/31/19 21:57
BRF
Benzene
0.11
0.035
0.014
0.34
0.11
0.046
0.702
7/31/19 21:57
BRF
2-Butanone (MEK)
32
1.4
0.055
94
4.1
0.16
0.702
7/31/19 21:57
BRF
Carbon Disulfide
ND
0.35
0.024
ND
1.1
0.075
0.702
7/31/19 21:57
BRF
1,3-Dichlorobenzene
ND
0.035
0.018
ND
0.21
0.11
0.702
7/31/19 21:57
BRF
Dichlorodiflumomethane (Freon 12)
0.59
0.035
0.015
2.9
0.17
0.075
0.702
7/31/19 21:57
BRF
cis-1,2-Dichloroethylene
ND
0.035
0.014
ND
0.14
0.057
0.702
7/31/19 21:57
BRF
trans-1,2-Dichloroethylene
ND
0.035
0.014
ND
0.14
0.056
0.702
7/31/19 21:57
BRF
Ethanol
9.8
1.4
0.63
18
2.6
1.2
0.702
7/31/19 21:57
BRF
Ethyl Acetate
ND
0.035
0.026
ND
0.13
0.094
0.702
7/31/19 21:57
BRF
Ethylbenzene
2.2
0.035
0.020
9.7
0.15
0.088
0.702
7/31/19 21:57
BRF
4-Ethyltoluene
0.62
0.035
0.021
3.0
0.17
0.11
0.702
7/31/19 21:57
BRF
Heptane
1.3
0.035
0.021
5.5
0.14
0.085
0.702
7/31/19 21:57
BRF
Hexane
ND
1.4
0.062
ND
4.9
0.22
0.702
7/31/19 21:57
BRF
Isopropanol
1.9
1.4
0.043
4.6
3.4
0.11
0.702
7/31/19 21:57
BRF
Methylene Chloride
ND
0.35
0.043
ND
1.2
0.15
0.702
7/31/19 21:57
BRF
Naphthalene
1.8
0.035
0.027
Z-01 9.2
0.18
0.14
0.702
7/31/19 21:57
BRF
Styrene
ND
0.035
0.022
ND
0.15
0.092
0.702
7/31/19 21:57
BRF
Tetrachloroethylene
0.14
0.035
0.020
0.95
0.24
0.13
0.702
7/31/19 21:57
BRF
Tetrahydrofuran
0.72
0.035
0.023
2.1
0.10
0.069
0.702
7/31/19 21:57
BRF
Toluene
17
0.035
0.018
62
0.13
0.068
0.702
7/31/19 21:57
BRF
Trichloroethylene
ND
0.035
0.014
ND
0.19
0.076
0.702
7/31/19 21:57
BRF
Trichlorofluoromethane (Freon 11)
0.40
0.14
0.020
2.3
0.79
0.11
0.702
7/31/19 21:57
BRF
1,1,2-Trichloro-1,2,2-(rifluoroethane (Freon 113)
ND
0.14
0.021
ND
1.1
0.16
0.702
7/31/19 21:57
BRF
1,3,5-Trimethylbenzene
0.41
0.035
0.022
2.0
0.17
0.11
0.702
7/31/19 21:57
BRF
Vinyl Chloride
ND
0.035
0.022
ND
0.090
0.057
0.702
7/31/19 21:57
BRF
m&p-Xylene
14
0.070
0.040
59
0.30
0.18
0.702
7/31/19 21:57
BRF
o-Xylene
5.7
0.035
0.022
25
0.15
0.095
0.702
7/31/19 21:57
BRF
Surrogates % Recovery % REC Limits
4-Bromofluorobenzene (1) 101 70-130 7/31/19 21:57
Page 9 of 23

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ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
Sample Extraction
Data
Prep Method: TO-15 Prep -EPA TO-15
Pre-Dil
Pre-Dil
Default
Actual
Pressure
Pre
Initial
Final
Injection
Injection
Lab Number [Field ID]
Batch
Dilution
Dilution
mL
mL
mL
mL
Date
19G1535-01 [IA-1]
B236986
1.5
1
N/A
1000
400
855
07/31/19
19G1535-OIRE1 [IA-1]
B236986
1.5
1
N/A
1000
400
150
07/31/19
19G1535-02 [IA-2]
B236986
1.5
1
N/A
1000
400
855
07/31/19
19G1535-03 [IA-3]
B236986
1.5
1
N/A
1000
400
855
07/31/19
19GI535-03REI [IA-3]
B236986
1.5
1
N/A
1000
400
150
07/31/19
19G1535-04 [IA-4]
B236986
1.5
1
N/A
1000
400
855
07/31/19
19G1535-04REI [IA-4]
B236986
1.5
1
N/A
1000
400
150
07/31/19
19G1535-05 [AMB-1]
B236986
1.5
1
N/A
1000
400
855
07/31/19
19G1535-06 [IA-10]
B236986
1.5
1
N/A
1000
400
855
07/31/19
Page 10 of 23

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ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
QUALITY CONTROL
Air Toxics by EPA Compendium Methods - Quality Control
ppbv ug/m3 Spike Level Source %REC RPD
nalyte Results RL Results RL ppbv Result %REC Limits RPD Limit Flag/Qua
Batch B236986 - TO-15 Prep
Blank (B236986-BLK1)
Prepared & Analyzed: 07/31/19
Acetone
ND
1.4
Benzene
ND
0.035
2-Butanone (MEK)
ND
1.4
Carbon Disulfide
ND
0.35
1,3-Dichlorobenzene
ND
0.035
Dichlorodifluoromethane (Freon 12)
ND
0.035
cis-1,2-Dichloroethylene
ND
0.035
trans-1,2-Dichloroethylene
ND
0.035
Ethanol
ND
1.4
Ethyl Acetate
ND
0.035
Ethylbenzene
ND
0.035
4-Ethyltoluene
ND
0.035
Heptane
ND
0.035
Hexane
ND
1.4
Isopropanol
ND
1.4
Methylene Chloride
ND
0.35
Naphthalene
ND
0.035 Z-01
Styrene
ND
0.035
Tetrachloroethylene
ND
0.035
Tetrahydrofuran
ND
0.035
Toluene
ND
0.035
Trichloroethylene
ND
0.035
Trichlorofluoromethane (Freon 11)
ND
0.14
1, 1,2-Trichloro- 1,2,2-trifluoroethane (Freon
ND
0.14
113)
1,3,5-Trimethylbenzene
ND
0.035
Vinyl Chloride
ND
0.035
m&p-Xylene
ND
0.070
o-Xylene
ND
0.035
Surrogate: 4-BromoJluorobenzene (1) 7.89 8.00 98.7 70-130
Page 11 of 23

icon-tes w .
ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
QUALITY CONTROL
Air Toxics by EPA Compendium Methods - Quality Control
ppbv ug/m3 Spike Level Source %REC RPD
.nalyte Results RL Results RL ppbv Result %REC Limits RPD Limit Flag/Qua
Batch B236986 - TO-15 Prep
LCS (B236986-BS1)
Prepared & Analyzed: 07/31/19
Acetone
4.37
5.00
87.4
70-130
Benzene
4.39
5.00
87.7
70-130
2-Butanone(MEK)
4.42
5.00
88.4
70-130
Carbon Disulfide
5.14
5.00
103
70-130
1,3-Dichlorobenzene
5.57
5.00
ill
70-130
Dichlorodifluoromethane (Freon 12)
4.95
5.00
99.0
70-130
cis-1,2-Dichloroethylene
4.85
5.00
97.0
70-130
trans-1,2-Dichloroethylene
4.76
5.00
95.3
70-130
Ethanol
4.06
5.00
81.1
70-130
Ethyl Acetate
4.71
5.00
94.2
70-130
Ethylbenzene
4.70
5.00
94.0
70-130
4-Ethyltoluene
5.04
5.00
101
70-130
Heptane
4.27
5.00
85.3
70-130
Hexane
5.09
5.00
102
70-130
Isopropanol
4.09
5.00
81.8
70-130
Methylene Chloride
4.42
5.00
88.4
70-130
Naphthalene
7.49
5.00
150
* 70-130 Z-01
Styrene
5.30
5.00
106
70-130
Tetrachloroethylene
4.49
5.00
89.8
70-130
Tetrahydrofuran
4.83
5.00
96.5
70-130
Toluene
4.64
5.00
92.7
70-130
Trichloroethylene
4.52
5.00
90.4
70-130
Trichlorofluoromethane (Freon 11)
5.00
5.00
100
70-130
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon
4.86
5.00
97.2
70-130
113)
1,3,5-Trimethylbenzene
4.84
5.00
96.8
70-130
Vinyl Chloride
4.69
5.00
93.8
70-130
m&p-Xylene
9.52
10.0
95.2
70-130
o-Xylene
4.71
5.00
94.1
70-130
Surrogate: 4-Bromofluorobenzene (1) 7.87 8.00 98.4 70-130
Page 12 of 23

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ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 * FAX [phone] " TEL. [phone]
FLAG/QUALIFIER SUMMARY
*
QC result is outside of established limits.
t
Wide recovery limits established for difficult compound.
$
Wide RPD limits established for difficult compound.
#
Data exceeded client recommended or regulatory level
RL
Reporting Limit
MDL
Method Detection Limit
RPD
Relative Percent Difference
LCS
Laboratory Control Sample
LCS Dup
Duplicate Laboratory Control Sample
MS
Matrix Spike Sample
MS Dup
Duplicate Matrix Spike Sample
REC
Recovery
QC
Quality Control
ppbv
Parts per billion volume
EPA
United States Environmental Protection Agency
% REC Percent Recovery
ND Not Detected
N/A Not Applicable
DL Detection Limit
NC Not Calculated
LFB/LCS Lab Fortified Blank/Lab Control Sample
ORP Oxidation -Reduction Potential
wet Not dry weight corrected
% wt Percent weight
Kg Kilogram
g Gram
mg Milligram
µg Microgram
ng Nanogram
L Liter
mL Milliliter
µL Microliter
m3 Cubic Meter
EPH Extractable Petroleum Hydrocarbons
VPH Volatile Petroleum Hydrocarbons
APH Air Petroleum Hydrocarbons
FID Flame Ionization Detector
PID Photo Ionization Detector
Percent recoveries and relative percent differences (RPDs) are determined by the software using values in the
calculation which have not been rounded.
Z-01 Compound fails the method requirement of 70-130% recovery for the LCS. Is classified by the lab as a difficult
compound and passes the in house limits of 50-150%.
ANALYST
RAP Raisa A. Petraitis
STATION PDF Management Station
KKM Kerry K. McGee
CF2 Christine M. Farina
BRF Brittany R. Fisk
Page 13 of 23

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ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
INTERNAL STANDARD AREAAND RT SUMMARY
EPA TO-15
Internal Standard
Response
RT
Reference
Response
Reference
RT
Area %
Area o/
Limits
RT Diff
RT Diff
Limit
Q
Initial Cal Check (S038528-ICV1) Lab File ID: B1920819.D Analyzed: 07/27/19 19:24
Bromochloromethane (1)
144000
5.05
141846
5.054
102
60 - 140
-0.0040
+/-0.50
1,4-Difluorobenzene (1)
338979
6.264
331570
6.268
102
60 - 140
-0.0040
+/-0.50
Chlorobenzene-d5(1)
300441
9.857
293128
9.861
102
60-140
-0.0040
+/-0.50
INTERNAL STANDARD AREAAND RT SUMMARY
EPA TO-15
Internal Standard
Response
RT
Reference
Response
Reference
RT
Area %
Area o/
Limits
RT Diff
RT Diff
Limit
Q
Calibration Check (S038724-CCVI) Lab File ID: B1921204.D Analyzed: 07/31/19 10:46
Bromochloromethane (1)
123989
5.052
141846
5.054
87
60 - 140
-0.0020
+/-0.50
1,4-Difluorobenzene (1)
303050
6.266
331570
6.268
91
60 - 140
-0.0020
+/-0.50
Chlorobenzene-d5(1)
269377
9.859
293128
9.861
92
60-140
-0.0020
+/-0.50
LCS (B236986-BS1 ) Lab File ID: B1921205.D Analyzed: 07/31/19 11:15
Bromochloromethane (1)
128903
5.065
123989
5.052
104
60 - 140
0.0130
+/-0.50
1,4-Difluorobenzene (1)
317642
6.279
303050
6.266
105
60 - 140
0.0130
+/-0.50
Chlorobenzene-d5(1)
283081
9.86
269377
9.859
105
60-140
0.0010
+/-0.50
Blank (B236986-BLK1) Lab File ID: B1921207.D Analyzed: 07/31/19 12:15
Bromochloromethane (1)
125701
5.052
123989
5.052
101
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene (1)
304264
6.266
303050
6.266
100
60 - 140
0.0000
+/-0.50
Chlorobenzene-d5(1)
265132
9.859
269377
9.859
98
60-140
0.0000
+/-0.50
IA-1(19G1535-01) Lab File ID: B1921216.D Analyzed: 07/31/19 18:59
Bromochloromethane (1)
126631
5.047
123989
5.052
102
60 - 140
-0.0050
+/-0.50
1,4-Difluorobenzene (1)
302951
6.267
303050
6.266
100
60 - 140
0.0010
+/-0.50
Chlorobenzene-d5 (1)
263278
9.878
269377
9.859
98
60-140
0.0190
+/-0.50
IA-2 (19G1535-02 ) Lab File ID: B1921217.D Analyzed: 07/31/19 19:35
Bromochloromethane (1)
134156
5.052
123989
5.052
108
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene (1)
335932
6.266
303050
6.266
ill
60 - 140
0.0000
+/-0.50
Chlorobenzene-d5(1)
278021
9.883
269377
9.859
103
60-140
0.0240
+/-0.50
IA-3 (19G1535-03 ) Lab File ID: B1921218.D Analyzed: 07/31/19 20:10
Bromochloromethane (1)
139767
5.053
123989
5.052
113
60 - 140
0.0010
+/-0.50
1,4-Difluorobenzene (1)
349435
6.267
303050
6.266
115
60 - 140
0.0010
+/-0.50
Chlorobenzene-d5(1)
280054
9.896
269377
9.859
104
60-140
0.0370
+/-0.50
IA-4 (19G1535-04) Lab File ID: B1921219.D Analyzed: 07/31/19 20:46
Bromochloromethane (1)
135094
5.052
123989
5.052
109
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene (1)
347549
6.266
303050
6.266
115
60 - 140
0.0000
+/-0.50
Chlorobenzene-d5(1)
291362
9.871
269377
9.859
108
60-140
0.0120
+/-0.50
Page 14 of 23

icon-tes w .
ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
INTERNAL STANDARD AREAAND RT SUMMARY
EPA TO-15
Internal Standard
Response
RT
Reference
Response
Reference
RT
Area %
Area o/
Limits
RT Diff
RT Diff
Limit
Q
AMB-1 (19G1535-05) Lab File ID: B1921220.D Analyzed: 07/31/19 21:21
Bromochloromethane (1)
137885
5.053
123989
5.052
111
60 - 140
0.0010
+/-0.50
1,4-Difluorobenzene (1)
357325
6.266
303050
6.266
118
60 - 140
0.0000
+/-0.50
Chlorobenzene-d5(1)
311677
9.86
269377
9.859
116
60-140
0.0010
+/-0.50
IA-10 (19G1535-06) Lab File ID: B1921221.D Analyzed: 07/31/19 21:57
Bromochloromethane (1)
140040
5.048
123989
5.052
113
60 - 140
-0.0040
+/-0.50
1,4-Difluorobenzene (1)
354632
6.268
303050
6.266
117
60 - 140
0.0020
+/-0.50
Chlorobenzene-d5(1)
291992
9.879
269377
9.859
108
60-140
0.0200
+/-0.50
IA-1 (19G1535-01RE1) Lab File ID: B1921234.D Analyzed: 08/01/19 09:07
Bromochloromethane (1)
124940
5.059
123989
5.052
101
60 - 140
0.0070
+/-0.50
1,4-Difluorobenzene (1)
307201
6.272
303050
6.266
101
60 - 140
0.0060
+/-0.50
Chlorobenzene-d5(1)
275531
9.86
269377
9.859
102
60-140
0.0010
+/-0.50
IA-3 (19G1535-03RE1) Lab File ID: B1921235.D Analyzed: 08/01/19 09:36
Bromochloromethane (1)
126617
5.06
123989
5.052
102
60 - 140
0.0080
+/-0.50
1,4-Difluorobenzene (1)
321094
6.273
303050
6.266
106
60 - 140
0.0070
+/-0.50
Chlorobenzene-d5(1)
284151
9.867
269377
9.859
105
60-140
0.0080
+/-0.50
IA-4 (19G1535-04RE1) Lab File ID: B1921236.D Analyzed: 08/01/19 10:05
Bromochloromethane (1)
127004
5.062
123989
5.052
102
60 - 140
0.0100
+/-0.50
1,4-Difluorobenzene (1)
325170
6.276
303050
6.266
107
60 - 140
0.0100
+/-0.50
Chlorobenzene-d5(1)
286409
9.863
269377
9.859
106
60-140
0.0040
+/-0.50
Page 15 of 23

icon-tes w .
ANALYTICAL LABORATORY
39 Spruce Street' East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
CONTINUING CALIBRATION CHECK
EPA TO-15
S038724-CCV 1
COMPOUND
TYPE
CONC. (ppbv)
RESPONSE FACTOR
% DIFF / DRIFT
STD
CCV
ICAL
CCV
MIN (#)
CCV
LIMIT (#)
Acetone
A
5.00
4.49
1.061501
0.9525877
-10.3
30
Benzene
A
5.00
4.17
0.8735206
0.728033
-16.7
30
2-Butanone (MEK)
A
5.00
4.04
1.510652
1.219528
-19.3
30
Carbon Disulfide
A
5.00
4.88
1.951102
1.902414
-2.5
30
1,3-Dichlorobenzene
A
5.00
4.61
0.6156422
0.5670922
-7.9
30
Dichlorodifluoromethane (Freon 12)
A
5.00
4.68
1.496329
1.399427
-6.5
30
cis-1,2-Dichloroethylene
A
5.00
4.58
0.8593978
0.7875666
-8.4
30
trans-1,2-Dichloroethylene
A
5.00
4.47
0.9369909
0.8372356
-10.6
30
Ethanol
L
5.00
5.60
0.2361095
0.2344466
12.0
30
Ethyl Acetate
A
5.00
4.55
0.2359238
0.21469
-9.0
30
Ethylbenzene
A
5.00
4.34
1.254903
1.089548
-13.2
30
4-Ethyltoluene
A
5.00
4.41
1.170616
1.033324
-11.7
30
Heptane
A
5.00
4.14
0.2735238
0.2263864
-17.2
30
Hexane
L
5.00
4.82
0.492452
0.3892861
-3.6
30
Isopropanol
L
5.00
4.81
1.490308
1.15507
-3.8
30
Methylene Chloride
A
5.00
4.22
0.8402594
0.7083209
-15.7
30
Naphthalene
A
5.00
5.41
0.6049938
0.6544464
8.2
30
Styrene
A
5.00
4.63
0.6473158
0.5994691
-7.4
30
Tetrachloroethylene
A
5.00
4.28
0.4931961
0.4218148
-14.5
30
Tetrahydtofuran
A
5.00
4.19
0.8848512
0.7413819
-16.2
30
Toluene
A
5.00
4.29
0.9917029
0.8517253
-14.1
30
Trichloroethylene
A
5.00
4.29
0.357385
0.3063574
-14.3
30
Trichlorofluoromethane (Freon 11)
A
5.00
4.58
1.428406
1.309871
-8.3
30
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 11
A
5.00
4.75
1.290004
1.226573
-4.9
30
1,3,5-Trimethylbenzene
A
5.00
4.28
0.9344044
0.8001693
-14.4
30
Vinyl Chloride
A
5.00
4.45
0.6970639
0.6204292
-11.0
30
m&p-Xylene
A
10.0
8.75
0.9303396
0.8144571
-12.5
30
o-Xylene
A
5.00
4.28
0.9311699
0.7980963
-14.3
30
# Column to be used to flag Response Factor and %Difi/Drift values with an asterisk
* Values outside of QC limits
Page 16 of 23

icon-tes w .
ANALYTICAL LABORATORY
39 Spruce Street ` East Longmeadow, MA 01028 ' FAX [phone] " TEL. [phone]
CERTIFICATIONS
Certified Analyses included in this Report
Analyte
Certifications
EPA TO-15 in Air
Acetone
AIHA,NY,ME,NH
Benzene
AIHA,FL,NJ,NYNfE,NH,VA
2-Butanone (MEK)
AIHA,FL,NJ,NYNfE,NH,VA
Carbon Disulfide
AIHA,NJ,NY,ME,NH,VA
1,3-Dichlorobenzene
AIHA,NJ,NY,ME,NH
Dichlorodifluoromethane (Freon 12)
AIHA,NY,ME,NH
cis-1,2-Dichloroethylene
AIHA,FL,NY,ME,NH,VA
trans-1,2-Dichloroethylene
AIHA,NJ,NY,ME,NH,VA
Ethanol
AIHA
Ethyl Acetate
AIHA
Ethylbenzene
AIHA,FL,NJ,NY,ME,NH,VA
4-Ethyltoluene
AIHA,NJ
Heptane
AIHA,NJ,NY,ME,NH,VA
Hexane
AIHA,FL,NJ,NY,ME,NH,VA
Isopropanol
AIHA,NY,ME,NH
Methylene Chloride
AIHA,FL,NJ,NY,ME,NH,VA
Naphthalene
NY,ME,NH
Styrene
AIHA,FL,NJ,NY,ME,NH,VA
Tetrachloroethylene
AIHA,FL,NJ,NY,ME,NH,VA
Tetrahydrofuran
AIHA
Toluene
AIHA,FL,NJ,NY,ME,NH,VA
Trichloroethylene
AIHA,FL,NJ,NY,ME,NH,VA
Trichlorofluoromethane (Freon 11)
AIHA,NY,ME,NH
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
AIHA,NJ,NY,ME,NH,VA
1,3,5-Trimethylbenzene
AIHA,NJ,NY,ME,NH
Vinyl Chloride
AIHA,FL,NJ,NYNfE,NH,VA
m&p-Xylene
AIHA,FL,NJ,NYNfE,NH,VA
o-Xylene
AIHA,FL,NJ,NY,ME,NH,VA
Page 17 of 23

icon-tes w .
ANALYTICAL LABORATORY
39 Spruce Street' East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
The CON -TEST Environmental Laboratory operates under the following certifications and accreditations:
Code
Description
Number
Expires
AIHA
AIHA-LAP, LLC - ISO17025:2005
100033
03/1/2020
MA
Massachusetts DEP
M-MA100
06/30/2020
CT
Connecticut Department of Publilc Health
PH-0567
09/30/2019
NY
New York State Department of Health
10899 NELAP
04/1/2020
NH-S
New Hampshire Environmental Lab
2516 NELAP
02/5/2020
RI
Rhode Island Department of Health
LAO00112
12/30/2019
NC
North Carolina Div. of Water Quality
652
12/31/2019
NJ
New Jersey DEP
MA007 NELAP
06/30/2020
FL
Florida Department of Health
E871027 NELAP
06/30/2020
VT
Vermont Department of Health Lead Laboratory
LL015036
07/30/2020
ME
State of Maine
2011028
06/9/2021
VA
Commonwealth of Virginia
460217
12/14/2019
NH-P
New Hampshire Environmental Lab
2557 NELAP
09/6/2019
VT-DW
Vermont Department of Health Drinking Water
VT-255716
06/12/2020
NC-DW
North Carolina Department of Health
25703
07/31/2019
PA
Commonwealth of Pennsylvania DEP
68-05812
06/30/2020
Page 18 of 23

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Page 20 G 23

7/29/2019 Track your package or shipment with Fed Ex Tracking
r
775838345886`,
Delivered
Monday 7/29/2019 at 1:16 pm
DELIVERED
Signed for by: FFOUST
GET STATUS UPDATES
OBTAIN PROOF OF DELIVERY
FROM TO
Prfleig'_i, NC LS East i oElgmeadmv, I,rid US
Multiple -piece Shipment
4 Piece shipment
TRACKING NUMBER
SHIPPER CITY, ..
STATE
SHIP DATE STATUS
DE.LIV1 RY HATE
DESTINATION/RECIPIENT
CITY, STATE..
775838345886
DURHAM, NC
7/25/2019
7r 29/2619
EAST LONGMEADOVd, MA
775838345555
DURHAM, NC
7/25/2019
7/29/2019
EAST LONGMEADO1,%' MA
775838345509
DURHAM, NC
7/25i2019
7/29/2019
EAST-LONGMFADGbV, MA
775838345761 DURI1AM, NC 7/25/2019
Shipment Pacts
TRACKING NUMBER SERVICE
775838345886 FedEx Ground
MASTER TRACKING NUMBER WEIGHT
7 /5838345886 15 Ibs / 6.8 kg,,,
7/29/2019
REFERENCE
80
DIMENSIONS
22x19xl4 in
TOTAL PIECES TOTAL SHIPMENT WEIGHT TERMS
4 60 Ibs i 27 22 kgs 1 hird Party
EAST LONGMEADOV�l MA
PACKAGING STANDARD TRANSIT SHIP DATE
https:llwww.fedex.com/apps/fadextracklindex.html?action=track&tracknumbers=775838345886&locale=en_US&cntry_pode=en Page 21 of 23

7/29/2019 Track your package or shipment with FedEx Tracking
775838345555:
Delivered
Monday 7/29/2019 at 1.16 pry
DELIVERED
Signed for by: FFOUST
GET STATUS UPDATES
OBTAIN PROOF OF DELIVERY
FROM
R;:dLgh, N(. US
TO
Fast L.ongmeadov�, MA us
Multiple -piece Shipment
4 Piece shipment
775838345886 DURHAM, NC
(master )
7/25/2019
//29/2019
EAST LGNGMEAC)OW, MA
775838345555 DURE IAM, NC
7/25/2019
71'29/2019
EAST LONGMEADOW, MBA
775838345569 DURHA.Mt, NC
7r25i2019
7r29/201 �
EAsTLONGIVEADtOIk, MA
71 582Kz457b1 DURI ]AM, NC
7/25i2019
7,129/2019
EAST LONGMEADOW, IAA
Shipment Facts
TRACKING NUMBER
SERVICE
REFERENCE
775838345555
FedEx Ground
80
MASTER TRACKING NUMBER
WEIGHT
DIMENSIONS
775838345886
15 ibs / 6.8 kgs
22x ; 4c ire
TOTAL PIECES
TOTAL SHIPMENT WEIGHT
TERMS
4
6C ibs / 27 22 kgs
Third Party
PACKAGING STANDARD TRANSIT SHIP DATE
https:flwww.fedex.com/apps/fedextrackt?action=track&trackingnumber=775838345555&cntrycode=us&locale=en_US Page 22 of 23

Client
Received By CP _ Date
How were the samples In Cooler
received? In Box T
Were samples within Temperature By Gun
Compliance? 2-6°C N fl By Bla
Was Custody Seal Intact? N A
Was COC Relinquished ? T
Are there any loose caps/valves on any samples?
Is COC in ink/ Legible? T(lid COC Include all Client T
Pertinent Information? Project T
Are Sample Labels filled out and legible?
Are there Rushes? I'
Samples are received within holding time?
Proper Media Used? -r
Are there Trip Blanks? F
-7L,-! g%y/ �z Time 1-7,30
On Ice No Ice
Ambient Melted Ice
# Actual Temp -
nk # Actual Temp -
Were Samples Tampered with?
Does Chain Agree With Samples? i
Analysis T Sampler Name r
ID`s -_ Collection Dates/Times 4
Who was notified?
i
Individually Certified Cans?
Is there enough Volume?
T
Page 23 of 23

APPENDIX C
SUB -SLAB SOIL GAS VAPOR INTRUSION NON-RESIDENTIAL
RISK CALCULATIONS
IS Mid Atlantic

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 on-t-tinna - in nbhn3
CAS #
Chemical Name:
Soil Gas
Concentration
e
(ug/m)
Calculated
Indoor Air
Concentration
(ug✓m3)
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
940
9.4
2.7E+04
6.9E-05
100-414
Eth Ibenzene
4.9
0.049
4.9E+00
8.8E+02
1.0E-08
1.1E-05
67-63-0
Iso ro anol
120
1.2
1.8E+02
1.4E-03
78-93-3
Methyl Ethyl Ketone 2-Butanone
150
1.5
4.4E+03
6.8E-05
10042-5
Styrene
4.9
0.049
8.8E+02
L1E-05
127-184
Tetrachloroeth lene
14
0.14
4.7E+01
3.5E+01
3.0E-09
8.0E-04
108-88-3
Toluene
54
0.54
4.4E+03
2.5E-05
79-01-6
Trichloroeth lene
4.6
0.046
3.0E+00
1.8E+00
1.5E-08
5.3E-03
75-69-4
Trichlorofluoromethane
62
0.62
10642-3
X lene P-
21
0.21
8.8E+01
4.8E-04
108-38-3
X lene m-
8.8E+O1
95 47-6
X lene o-
6.7
0.067
8.8E+01
1.5E-04
Cumulative: I 2.8E-08 1 8.2E-03
North Carolina DEQ Risk Calculator

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 uf:(m3
CAS #
Chemical Name:
Soil Gas
Concentration
(ug m)
Calculated
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens @
TCR = I E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
42
0.42
2.7E+04
3.1E-06
7143-2
Benzene
1.9
0.019
1.6E+00
2.6E+01
1.2E-08
1.4E-04
75-71-8
Dichlorodifluoromethane
0
0
8.8E+01
0.0E+00
141-78-6
Ethyl Acetate
0
0
6.1E+01
0.0E+00
10041-4
Eth lbenzene
4.3
0.043
4.9E+00
8.8E+02
8.8E-09
9.8E-06
109-99-9
-Tetrah drofuran
4.7
0.047
1.8E+03
5.4E-06
142-82-5
Heptane, N-
1.3
0.013
3.5E+02
7.4E-06
110-54-3
Hexane N-
0
0
6.1E+02
0.0E+00
67-63-0
Iso ro anol
9.6
0.096
1.8E+02
1.1 E-04
78-93-3
Methyl Ethyl Ketone 2-Butanone
9.7
0.097
4.4E+03
4.4E-06
75-09-2
Methylene Chloride
1.3
0.013
1.2E+03
5.3E+02
1.1E-11
4.9E-06
91-20-3
-Naphthalene
3.7
0.037
3.6E-01
2.6E+00
LOE-07
2.8E-03
100-42-5
Styrene
4.3
0.043
8.8E+02
9.8E-06
127-18-4
Tetrachloroeth lene
13
0.13
4.7E+O1
3.5E+01
2.8E-09
7.4E-04
108-88-3
Toluene
47
0.47
4.4E+03
2.1E-05
79-01-6
Trichloroeth lene
1.7
0.017
3.0E+00
1.8E+00
5.7E-09
1.9E-03
75-69-4
Trichlorofluoromethane
43
0.43
108-67-8
Trimeth lbenzene 1 3 5-
2.1
0.021
5.3E+O1
8.0E-05
10642-3
X lene P-
20
0.2
8.8E+0l
4.6E-04
108-38-3
X lene m-
0
0
8.8E+01
0.0E+00
95-47-6
X lene, o-
6.2
0.062
8.8E+01
1.4E-04
Cumulative: I 1.3E-07 I 6.5E-03
North Carolina DEQ Risk Calculator

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/m,)
Calculated
indoor Air
Concentration
(.g/m3)
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
50
0.5
2.7E+04
3.7E-06
71-43-2
Benzene
34
0.34
1.6E+00
2.6E+01
2.2E-07
2.6E-03
75-71-8
Dichlorodifluoromethane
1.3
0.013
8.8E+01
3.0E-05
141-78-6
Ethyl Acetate
2.7
0.027
6.1E+01
8.8E-05
100-41-4
Eth lbenzene
6.4
0.064
4.9E+00
8.8E+02
1.3E-08
1.5E-05
109-99-9
-Tetrah drofumn
5.8
0.058
1.8E+03
6.6E-06
142-82-5
Heptane, N-
2.5
0.025
3.5E+02
1.4E-05
110-54-3
Hexane, N-
3.9
0.039
6.IE+02
1.3E-05
67-63-0
Iso ro anol
11
0.11
1.8E+02
1.3E-04
78-93-3
Methyl Ethyl Ketone 2-Butanone)
9.5
0.095
4.4E+03
4.3E-06
75-09-2
Methylene Chloride
0.93
0.0093
1.2E+03
5.3E+02
7.6E-12
3.5E-06
91-20-3
-Naphthalene
3.5
0.035
3.6E-01
2.6E+00
9.7E-08
2.7E-03
100-42-5
Styrene
6.2
0.062
8.8E+02
1.4E-05
127-18-4
Tetrachloroeth lene
9.8
0.098
4.7E+01
3.5E+01
2.1E-09
5.6E-04
108-88-3
Toluene
63
0.63
4.4E+03
2.9E-05
79-01-6
Trichloroeth lene
1.3
0.013
3.0E+00
1.8E+00
4.3E-09
1.5E-03
75-694
Trichlorofluoromethane
39
0.39
108-67-8
Trimeth (benzene 13 5-
2.9
0.029
5.3E+01
1.1E-04
10642-3
X lene P-
30
0.3
8.8E+O1
6.8E-04
108-38-3
X lene m-
0
0
8.8E+01
0.0E+00
95-47-6
X lene o-
9.6
0.96 0
8.8E+O1
2.2E-04
Cumulative: I 3.3E-07 1 8.7E-03
North Carolina DEQ Risk Calculator

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 uL/ni
CAS #
Chemical Name:
Soil Gas
Concentration
(ug/m)
Calculated
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Cone. for
Carcinogens @
TCR = I E-06
Target Indoor Air
Cfor Non -
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
100
1
2.7E+04
7.4E-06
7143-2
Benzene
3.5
0.035
1.6E+00
2.6E+01
2.2E-08
2.7E-04
75-71-8
Dichlorodifluoromethane
1.7
0.017
8.8E+01
3.9E-05
141-78-6
Eth IAcetate
0
0
6.1E+01
0.0E+00
100-414
Eth ]benzene
6.3
0.063
4.9E+00
8.8E+02
1.3E-08
1.4E-05
109-99-9
-Tetrah drofuran
15
0.15
1.8E+03
1.7E-05
142-82-5
Heptane, N-
0
0
3.5E+02
0.0E+00
110-54-3
Hexane N-
3.6
0.036
6.1E+02
1.2E-05
67-63-0
Iso ro anol
12
0.12
1.8E+02
1.4E-04
78-93-3
Methyl Ethyl Ketone 2-Butanone
18
0.18
4.4E+03
8.2E-06
75-09-2
Methylene Chloride
1.5
0.015
1.2E+03
5.3E+02
1.2E-I I
5.7E-06
91-20-3
-Naphthalene
4.3
0.043
3.6E-01
2.6E+00
1.2E-07
3.3E-03
10042-5
Styrene
5.6
0.056
8.8E+02
1.3E-05
127-18-4
Tetrachloroeth lene
7.7
0.077
4.7E+01
3.5E+01
1.6E-09
4.4E-04
108-88-3
Toluene
74
0.74
4.4E+03
3.4E-05
79-01-6
Trichloroeth lene
0
0
3.0E+00
1.8E+00
0.0E+00
0.0E+00
75-694
Trichlorofluoromethane
38
0.38
108-67-8
Trimeth ]benzene 1 3 5-
2.6
0.026
5.3E+01
9.9E-05
10642-3
X lene P-
30
0.3
8.8E+01
6.8E-04
108-38-3
X lene m-
0
0
8.8E+01
0.0E+00
9547-6
X lene o-
8.7
0.087
8.8E+01
2.0E-04
Cumulative: 1.6E-07 I 5.2E-03
North Carolina DEQ Risk Calculator

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 nnncentratin- are in _/m3
CAS #
Chemical Name:
Soil Gas
Concentration
3
(uglm)
Calculated
Indoor Air
Concentration
Co
(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
78
0.78
2.7E+04
5.7E-06
71-43-2
Benzene
2.8
0.028
1.6E+00
2.6E+01
1.8E-08
2.1E-04
75-71-8
Dichlorodifluoromethane
1.4
0.014
8.8E+01
3.2E-05
141-78-6
Ethyl Acetate
2.5
0.025
6.1E+01
8.2E-05
100-41-4
Eth ]benzene
6.1
0.061
4.9E+00
8.8E+02
1.2E-08
1.4E-05
109-99-9
-Tetrah drofuran
19
0.19
1.8E+03
2.2E-05
142-82-5
Heptane, N-
1.8
0.018
3.5E+02
1.0E-05
110-54-3
Hexane N-
2.1
0.021
6.1E+02
6.8E-06
67-63-0
Iso ro anol
10
0.1
1.8E+02
1.1E-04
78-93-3
Methyl Ethyl Ketone 2-Butanone
12
0.12
4.4E+03
5.5E-06
75-09-2
Methylene Chloride
1.6
0.016
1.2E+03
5.3E+02
1.3E-11
6.1E-06
91-20-3
-Naphthalene
3.1
0.031
3.6E-01
2.6E+00
8.6E-08
2.4E-03
100-42-5
Styrene
5.4
0.054
8.8E+02
1.2E-05
127-18-4
Tetrachloroeth lene
26
0.26
4.7E+0I
3.5E+01
5.5E-09
1.5E-03
108-88-3
Toluene
63
0.63
4.4E+03
2.9E-05
79-01-6
Trichloroeth lene
0
0
3.0E+00
1.8E+00
0.0E+00
0.0E+00
75-69-4
Trichlorofluoromethane
39
0.39
108-67-8
Trimeth ]benzene 1 3 5-
2.2
0.022
5.3E+01
8.4E-05
106-42-3
X lene P-
28
0.28
8.8E+01
6.4E-04
108-38-3
X lene, m-
0
0
8.8E+O1
0.0E+00
95-47-6
X lene, o-
8.2
0.082
8.8E+01
1.9E-04
Cumulative: I 1.2E-07 1 5.3E-03
North Carolina DEQ Risk Cal -It.,

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 cnnrentm iri- are in nn/m'
CAS €t
Chemical Name:
Soil Gas
Concentration
s
(ug/m)
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
80
0.8
2.7E+04
5.9E-06
7143-2
Benzene
2.7
0.027
1.6E+00
2.6E+01
1.7E-08
2.1E-04
75-71-8
Dichlorodifluoromethane
1.4
0.014
8.8E+01
3.2E-05
141-78-6
Ethyl Acetate
2.9
0.029
6.1E+01
9.5E-05
100-41-4
Eth lbenzene
4.4
0.044
4.9E+00
8.8E+02
9.0E-09
1.0E-05
109-99-9
-Tetrah drofuran
13
0.13
1.8E+03
1.5E-05
142-82-5
Heptane, N-
2.1
0.021
3.5E+02
1.2E-05
110-54-3
Hexane N-
1.9
0.019
6.1E+02
6.2E-06
67-63-0
Iso ro anol
4.6
0.046
1.8E+02
5.3E-05
78-93-3
Methyl Ethyl Ketone 2-Butanone)
24
0.24
4.4E+03
1.1E-05
75-09-2
Methylene Chloride
0.93
0.0093
1.2E+03
5.3E+02
7.6E-12
3.5E-06
91-20-3
-Naphthalene
5.4
0.054
3.6E-01
2.6E+00
1.5E-07
4.1E-03
100-42-5
Styrene
4.8
0.048
8.8E+02
I.1E-05
127-184
Tetrachloroeth lene
18
0.18
4.7E+OI
3.5E+0l
3.8E-09
LOE-03
108-88-3
Toluene
73
0.73
4.4E+03
3.3E-05
76-13-1
Tiichloro-122-trifluoroethane 11,2-
1.1
0.011
4.4E+03
5.0E-07
79-01-6
Trichloroeth lene
4.8
0.048
3.0E+00
1.8E+00
1.6E-08
5.5E-03
75-694
Trichlorofluoromethane
34
0.34
108-67-8
Trimeth lbenzene 1 3 5-
2.5
0.025
5.3E+01
9.5E-05
106-42-3
X lene P-
20
0.2
8.8E+O1
4.6E-04
108-38-3
X lene ni
0
0
8.8E+01
0.0E+00
95-47-6
X lene o-
6.5
0.065
8.8E+01
1.5E-04
Cumulative: I 2.0E-07 1 1.2E-02
North Caroline DEQ Risk Calculator

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
,
(uglm)
Calculated
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Cone. for
Carcinogens @
TCR = 1 E-06
Target Indoor Air
Cone. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
53
0.53
2.7E+04
3.9E-06
7143-2
Benzene
2.2
0.022
1.6E+00
2.6E+01
1.4E-08
1.7E-04
75-15-0
Carbon Disulfide
6.9
0.069
6.1E+02
2.3E-05
75-71-8
Dichlorodifluoromethane
1.4
0.014
8.8E+01
3.2E-05
141-78-6
Ethyl Acetate
0
0
6.1E+01
0.0E+00
100-414
Eth ]benzene
3.8
0.038
4.9E+00
8.8E+02
7.7E-09
8.7E-06
109-99-9
-Tetrah drofuran
6.5
0.065
1.8E+03
7.4E-06
142-82-5
Heptane, N-
1.3
0.013
3.5E+02
7.4E-06
110-54-3
Hexane N-
0
0
6.1 E+02
0.0E+00
67-63-0
Iso ro anol
4.1
0.041
1.8E+02
4.7E-05
78-93-3
Methyl Ethyl Ketone 2-Butanone
11
0.11
4.4E+03
5.0E-06
75-09-2
Methylene Chloride
0
0
1.2E+03
5.3E+02
0.0E+00
0.0E+00
91-20-3
-Naphthalene
3.6
0.036
3.6E-01
2.6E+00
1.0E-07
2.7E-03
10042-5
Styrene
4.4
0.044
8.8E+02
1.0E-05
127-18-4
Tetrachloroeth lene
14
0.14
4.7E+01
3.5E+01
3.0E-09
8.0E-04
108-88-3
Toluene
39
0.39
4.4E+03
1.8E-05
76-13-1
Trichloro-1 2 2-trifluoroethane 1 1 2-
0
0
4.4E+03
0.0E+00
79-01-6
Trichloroeth lene
6.3
0.063
3.0E+00
1.8E+00
2.1E-08
7.2E-03
75-69-4
Trichlorofluoromethane
42
0.42
108-67-8
Trimeth lbenzene 1 3 5-
2
0.02
5.3E+01
7.6E-05
106-42-3
X lene P-
18
0.18
8.8E+01
4.1E-04
108-38-3
X lene m-
0
0
8.8E+01
0.0E+00
9547-6
X lene o-
5.5
0.055
8.8E+0l I
I
1.3E-04
Cumulative: I 1.5E-07 1 1.2E-02
North Caroline DEQ Risk Calculator

APPENDIX D
SUB -SLAB SOIL GAS VAPOR INTRUSION RESIDENTIAL
RISK CALCULATIONS
IS Mid Atlantic

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 m)
Calculated
Indoor Air
Concentration
(ugIm3)
Target Indoor
Air Cone. for
Carcinogens @
TCR = I E-06
Target Indoor Air
Cone. for Non-
Carcinogens (n
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
940
28.2
6.5E+03
8.7E-04
100-41-4
Eth lbenzene
4.9
0.147
1.1E+00
2.1E+02
1.3E-07
1.4E-04
67-63-0
Iso ro anol
120
3.6
4.2E+01
1.7E-02
78-93-3
Methyl Ethyl Ketone 2-Butanone
150
4.5
1.0E+03
8.6E-04
10042-5
Styrene
4.9
0.147
2.1 E+02
1.4E-04
127-18-4
Tetrachloroeth lene
14
0.42
1.1E+01
8.3E+00
3.9E-08
1.0E-02
108-88-3
Toluene
54
1.62
1.0E+03
3.1E-04
79-01-6
Trichlometh lene
4.6
0.138
4.8E-01
4.2E-01
2.9E_07
6.6E-02
75-694
Trichlorofluoromethane
62
1.86
t 0642-3
X lene, P-
21
0.63
2.1E+01
6.0E-03
708-38-3
X lene, m-
2.1E+01
9547-6
X lene, o-
6.7
0.201
2.1E+01
1.9E-03
Cumulative: I 4.6E-07 1 1.0E-01
North Carolina DEQ Risk Calculator

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/m;
CAS #
Chemical Name:
Soil Gas
Concentration
3
(ug/m)
Calculated
Indoor Air
Concentration
(ug/m3)
Target indoor
Air Conc. for
Carcinogens (a,
TCR = I E-06
Target Indoor Air
Conc. for Non -
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
42
1.26
6.5E+03
3.9E-05
71-43-2
Benzene
1.9
0.057
3.6E-01
6.3E+00
1.6E-07
1.8E-03
75-71-8
Dichlorodifluoromethane
0
0
2.1E+01
0.0E+00
141-78-6
Ethyl Acetate
0
0
1.5E+01
0.0E+00
10041-4
Eth lbenzene
4.3
0.129
1.1E+00
2.1E+02
1.1E-07
1.2E-04
109-99-9
-Tetrah drofuran
4.7
0.141
4.2E+02
6.8E-05
142-82-5
He tane N-
1.3
0,039
8.3E+01
9.3E-05
110-54-3
Hexane, N-
0
0
1.5E+02
0.0E+00
67-63-0
Iso ro anol
9.6
0,288
4.2E+01
1.4E-03
78-93-3
Methyl Ethyl Ketone 2-Butanone
9.7
0.291
1.0E+03
5.6E-05
75-09-2
Methylene Chloride
1.3
0.039
I.OE+02
1.3E+02
3.8E-10
6.2E-05
91-20-3
-Naphthalene
3.7
0.111
8.3E-02
6.3E-01
1.3E-06
3.5E-02
10042-5
Styrene
4.3
0.129
2.1E+02
1.2E-04
127-184
Tetrachloroeth lene
13
0.39
1.1E+01
8.3E+00
3.6E-08
9.3E-03
108-88-3
Toluene
47
1.41
1.0E+03
2.7E-04
79-01-6
Trichloroeth lene
1.7
0.051
4.8E_01
4.2E-01
1.1E-07
2.4E-02
75-69-4
Trichlorofluoromethane
43
1.29
108-67-8
Trimeth lbenzene, 1,3,5-
2.1
0.063
1.3E+01
1.0E-03
106-42-3
X lene,P-
20
0.6
2.1E+O1
5.8E-03
108-38-3
X lene,m-
0
0
2.1E+01
0.0E+00
95-47-6
X lene, o-
6.2
0.186
2.1E+01
1.8E-03
Cumulative: I 1.8E-06 I 8.2E-02
North Carolina DEC Risk Calculator

Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion
risk, no risk values are calculated for these chemicals.
All concentrations are in u,,/m3
CAS #
Chemical Name:
Soil Gas
Concentration
(ug/m3)
Calculated
indoorAir
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
50
1.5
6.5E+03
4.6E-05
71-43-2
Benzene
34
1.02
3.6E-01
6.3E+00
2.8E-06
3.3E-02
75-71-8
Dichlorodifluoromethane
1.3
0.039
2.1E+01
3.7E-04
141-78-6
Ethyl Acetate
2.7
0.081
1.5E+01
1.1E-03
100-41-4
Eth lbenzene
6.4
0.192
1.1E+00
2.1E+02
1.7E-07
7.8E-04
109-99-9
-Tetrah drofuran
5.8
0.174
4.2E+02
8.3E-05
142-82-5
He tane N-
2.5
0.075
8.3E+01
1.8E-04
110-54-3
Hexane N-
3.9
0.117
1.5E+02
1.6E-04
67-63-0
lso ro anol
11
0.33
4.2E+01
1.6E-03
78-93-3
Methyl Ethyl Ketone 2-Butanone
9.5
0.285
1.0E+03
5.5E-05
75-09-2
Methylene Chloride
0.93
0.0279
1.0E+02
1.3E+02
2.8E-10
4.5E-05
91-20-3
-Naphthalene
3.5
0.105
8.3E-02
6.3E-01
1.3E-06
3.4E-02
100-42-5
Styrene
6.2
0.186
2.1E+02
1.8E-04
127-18-4
Tetrachloroeth lene
9.8
0.294
LIE+01
8.3E+00
2.7E-08
7.0E-03
108-88-3
Toluene
63
L89
1.0E+03
3.6E-04
79-01-6
Trichloroeth lene
1.3
0.039
4.8E-01
4.2E-01
8.2E-08
1.9E-02
75-69-4
Trichlorofluoromethane
39
1.17
108-67-8
Trimeth lbenzene, 1,3.5-
2.9
0.087
1.3E+01
1.4E-03
10642-3
X lene, P-
30
0.9
2.1E+01
8.6E-03
108-38-3
X lene, m-
0
0
2.1E+01
0.0E+00
95-47-6
X lene,o-
9.6
0.288
2.IE+01
2.8E-03
Cumulative: I 4.4E-06 I LIE-01
North Carolina DEC, Risk Calculator

North Carolina DEQ Risk Calculator

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 us/m3
CAS #
Chemical Name:
Soil Gas
Concentration
s
(ug m)
Calculated
Indoor Air
Concentration
(uglm3)
Target Indoor
Air Conc. for
Carcinogens
TCR = I E-06
Target Indoor Air
Conc. for Non -
Carcinogens
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
78
2.34
6.5E+03
7.2E-05
71-43-2
Benzene
2.8
0.084
3.6E-01
6.3E+00
2.3E-07
2.7E-03
75-71-8
Dichlorodifluoromethane
1.4
0.042
2.1E+01
4.0E-04
141-78-6
Ethyl Acetate
2.5
0,075
1.5E+01
1.0E-03
100-41-4
Eth ]benzene
6.1
0.183
1.1E+00
2.1E+02
1.6E-07
1.8E-04
109-99-9
-Tetrah drofuran
19
0.57
4.2E+02
2.7E-04
142-82-5
He tane. N-
1.8
0.054
8.3E+OI
1.3E-04
110-54-3
Hexane, N-
2.1
0.063
1.5E+02
8.6E-05
67-63-0
Iso ro anol
10
0.3
4.2E+01
1.4E-03
78-93-3
Methyl Ethyl Ketone 2-Butanone
12
0.36
1.0E+03
6.9E-05
75-09-2
Methylene Chloride
1.6
0.048
I.OE+02
1.3E+02
4.7E-10
7.7E-05
91-20-3
-Naphthalene
3.1
0.093
8.3E-02
6.3E-01
LIE-06
3.0E-02
100-42-5
Styrene
5.4
0.162
2.1E+02
1.6E-04
127-184
Tetrachloroeth lene
26
0.78
1.1E+01
8.3E+00
7.2E-08
1.9E-02
108-88-3
Toluene
63
1.89
1.0E+03
3.6E-04
79-01-6
Trichloroeth lene
0
0
4.8E-01
4.2E-01
0.0E+00
0.0E+00
75-694
Trichlorofluoromethane
39
1.17
108-67-8
Trimeth lbenzene, 1,3,5-
2.2
0.066
1.3E+01
1.1E 03
106-42-3
X lene, P-
28
0.84
2.1E+01
8.1E-03
108-38-3
1 X lene, m-
0
0
2.IE+01
0.0E+00
45-47-6
1 X lene, o-
1 8.2
0.246
2.1E+01
2.4E-03
Cumulative: I 1.6E-06 I 6.7E-02
North Carolina DEQ Risk Calculator

North Carolina DEQ Risk Calculator

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 nr,/m3
CAS #
Chemical Name:
Soil Gas
Concentration
s
(ug/m)
Calculated
Indoor Air
Concentration
(ug/m3)
Target Indoor
Air Conc. for
Carcinogens (a.)
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
53
1.59
6.5E+03
4.9E-05
71-43-2
Benzene
2.2
0.066
3.6E-01
6.3E+00
1.8E-07
2.1E-03
75-15-0
Carbon Disulfide
6.9
0.207
1.5E+02
2.8E-04
75-71-8
Dichlorodifluoromethane
1.4
0.042
2.1E+01
4.0E-04
141-78-6
Ethyl Acetate
0
0
1.5E+01
0.0E+00
100-414
Eth lbenzene
3.8
0.114
1.1E+00
2.1 E+02
1.0E-07
1.1 E-04
109-99-9
-Tetrah drofuran
6.5
0.195
4.2E+02
9.3E-05
142-82-5
He tane, N-
1.3
0.039
8.3E+01
9.3E-05
110-54-3
Hexane, N-
0
0
1.5E+02
0.0E+00
67-63-0
Isoprophanol
4.1
0.123
4.2E+01
5.9E-04
78-93-3
Methyl Ethyl Ketone (2-Butanone)
11
0.33
1.0E+03
6.3E-05
75-09-2
Methylene Chloride
0
0
1.0E+02
1.3E+02
0.0E+00
0.0E+00
91-20-3
-Naphthalene
3.6
0.108
8.3E-02
6.3E-01
1.3E-06
3.5E-02
10042-5
Styrene
4.4
0.132
2.1E+02
1.3E-04
127-18-4
Tetrachloroeth lene
14
0.42
1.1E+01
8.3E+00
3.9E-08
1.0E-02
108-88-3
Toluene
39
1.17
1.0E+03
2.2E-04
76-13-1
Trichloro-1,2,2-trifluoroethane, 1,1,2-
0
0
1.0E+03
0.0E+00
79-01-6
Trichloroeth lene
6.3
0,189
4.8E-01
4.2E-01
4.0E-07
9.1E-02
75-694
Trichlorofluoromethane
42
1.26
108-67-8
Trimeth ]benzene 1,3,5-
2
0.06
1.3E+01
9.6E-04
106-42-3
X lene, P-
18
0.54
2.1E+01
5.2E-03
108-38-3
X lene, m-
0
0
2.1E+01
0.0E+00
95-47-6
X lene, o-
5.5
0.165
2.1E+01
1.6E-03
Cumulative: I 2.0E-06 1 1.5E-01
North Carolina DEC Risk Calculator

APPENDIX E
INDOOR AIR NON-RESIDENTIAL
RISK CALCULATIONS
IS Mid Atlantic

IDEO Risk Calculator - VanOC Intrusion - Non -Residential Worker Indoor Air r
Version Date: May 2019
Basis: Mav 2019 EPA RSL Table
Site ID:
Unit ID: AMB-1
** - 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/1113.
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
CAS #
Chemical Name:
Indoor Air
Concentration
3
(ug/m)
Target Indoor
Air Cone. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Cone. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
9.4
2.7E+04
6.9E-05
71-43-2
Benzene
0.22
1.6E+00
2.6E+01
1.4E-07
1.7E-03
75-71-8
Dichlorodifluoromethane
2
8.8E+01
4.6E-03
100-41-4
Ethylbenzene
0
4.9E+00
8.8E+02
0.0E+00
0.0E+00
109-99-9
-Tetrahydrofuran
0
1.8E+03
0.0E+00
142-82-5
Heptane, N-
0.2
3.5E+02
1.1E-04
110-54-3
Hexane, N-
0
6.1E+02
0.0E+00
67-63-0
Isopropanol
0
1.8E+02
0.0E+00
78-93-3
Methyl Ethyl Ketone (2-Butanone)
0
4.4E+03
0.0E+00
91-20-3
-Naphthalene
0.67
3.6E-01
2.6E+00
1.9E-06
5.1E-02
127-18-4
Tetrachloroethylene
0
4.7E+01
3.5E+01
0.0E+00
0.0E+00
108-88-3
Toluene
1.1
4.4E+03
5.0E-05
75-69-4
Trichlorofluoromethane
1
108-67-8
Trimethylbenzene, 1,3,5-
0
5.3E+01
0.0E+00
106-42-3
Xylene, P-
0.41
8.8E+01
9.4E-04
108-38-3
Xylene, m-
0
8.8E+01
0.0E+00
95-47-6
Xylene, o-
0.18
8.8E+01
4.1E-04
Cumulative: I 2.0E-06 5.9E-02
North Carolina DEQ Risk Calculator

IDEO Risk Calculator - VanOC Intrusion - Non -Residential Worker Indoor Air r
Version Date: May 2019
Basis: Mav 2019 EPA RSL Table
Site ID:
Unit ID: IA-1
** - 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/1113.
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
CAS #
Chemical Name:
Indoor Air
Concentration
3
(ug/m)
Target Indoor
Air Cone. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Cone. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
79
2.7E+04
5.8E-04
71-43-2
Benzene
0.36
1.6E+00
2.6E+01
2.3E-07
2.7E-03
75-71-8
Dichlorodifluoromethane
2.3
8.8E+01
5.3E-03
100-41-4
Ethylbenzene
10
4.9E+00
8.8E+02
2.0E-06
2.3E-03
109-99-9
-Tetrahydrofuran
2.1
1.8E+03
2.4E-04
142-82-5
Heptane, N-
5.6
3.5E+02
3.2E-03
78-93-3
Methyl Ethyl Ketone (2-Butanone)
120
4.4E+03
5.5E-03
91-20-3
-Naphthalene
9
3.6E-01
2.6E+00
2.5E-05
6.8E-01
127-18-4
Tetrachloroethylene
0.89
4.7E+01
3.5E+01
1.9E-08
5.1E-03
108-88-3
Toluene
61
4.4E+03
2.8E-03
75-69-4
Trichlorofluoromethane
2.4
108-67-8
Trimethylbenzene, 1,3,5-
2.1
5.3E+01
8.0E-03
106-42-3
Xylene, P-
61
8.8E+01
1.4E-01
108-38-3
Xylene, m-
0
8.8E+01
0.0E+00
95-47-6
Xylene, o-
26
8.8E+01
5.9E-02
Cumulative: I 2.7E-05 9.2E-01
North Carolina DEQ Risk Calculator

IDEO Risk Calculator - VanOC Intrusion - Non -Residential Worker Indoor Air r
Version Date: May 2019
Basis: Mav 2019 EPA RSL Table
Site ID:
Unit ID: IA-1
** - 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/1113.
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
CAS #
Chemical Name:
Indoor Air
Concentration
3
(ug/m)
Target Indoor
Air Cone. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Cone. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
70
2.7E+04
5.2E-04
71-43-2
Benzene
0.34
1.6E+00
2.6E+01
2.2E-07
2.6E-03
75-71-8
Dichlorodifluoromethane
2.9
8.8E+01
6.6E-03
100-41-4
Ethylbenzene
9.7
4.9E+00
8.8E+02
2.0E-06
2.2E-03
109-99-9
-Tetrahydrofuran
2.1
1.8E+03
2.4E-04
142-82-5
Heptane, N-
5.5
3.5E+02
3.1E-03
67-63-0
Isopropanol
4.6
1.8E+02
5.3E-03
78-93-3
Methyl Ethyl Ketone (2-Butanone)
94
4.4E+03
4.3E-03
91-20-3
-Naphthalene
9.2
3.6E-01
2.6E+00
2.6E-05
7.0E-01
127-18-4
Tetrachloroethylene
0.95
4.7E+01
3.5E+01
2.0E-08
5.4E-03
108-88-3
Toluene
62
4.4E+03
2.8E-03
75-69-4
Trichlorofluoromethane
2.3
108-67-8
Trimethylbenzene,1,3,5-
2
5.3E+01
7.6E-03
106-42-3
Xylene, P-
59
8.8E+01
1.3E-01
108-38-3
Xylene, m-
0
8.8E+01
0.0E+00
95-47-6
Xylene, o-
25
8.8E+01
5.7E-02
Cumulative: I 2.8E-05 9.3E-01
North Carolina DEQ Risk Calculator

IDEO Risk Calculator - VanOC Intrusion - Non -Residential Worker Indoor Air r
Version Date: May 2019
Basis: Mav 2019 EPA RSL Table
Site ID:
Unit ID: IA-2
** - 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/1113.
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
CAS #
Chemical Name:
Indoor Air
Concentration
3
(ug/m)
Target Indoor
Air Cone. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Cone. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
74
2.7E+04
5.4E-04
71-43-2
Benzene
0.78
1.6E+00
2.6E+01
5.0E-07
5.9E-03
75-71-8
Dichlorodifluoromethane
1.7
8.8E+01
3.9E-03
100-41-4
Ethylbenzene
9.5
4.9E+00
8.8E+02
1.9E-06
2.2E-03
109-99-9
-Tetrahydrofuran
2
1.8E+03
2.3E-04
142-82-5
Heptane, N-
5.5
3.5E+02
3.1E-03
67-63-0
Isopropanol
7.7
1.8E+02
8.8E-03
78-93-3
Methyl Ethyl Ketone (2-Butanone)
74
4.4E+03
3.4E-03
91-20-3
-Naphthalene
8.6
3.6E-01
2.6E+00
2.4E-05
6.5E-01
127-18-4
Tetrachloroethylene
0.91
4.7E+01
3.5E+01
1.9E-08
5.2E-03
108-88-3
Toluene
61
4.4E+03
2.8E-03
75-69-4
Trichlorofluoromethane
2.2
108-67-8
Trimethylbenzene,1,3,5-
2
5.3E+01
7.6E-03
106-42-3
Xylene, P-
57
8.8E+01
1.3E-01
108-38-3
Xylene, m-
0
8.8E+01
0.0E+00
95-47-6
Xylene, o-
25
8.8E+01
5.7E-02
Cumulative: I 2.6E-05 8.9E-01
North Carolina DEQ Risk Calculator

IDEO Risk Calculator - VanOC Intrusion - Non -Residential Worker Indoor Air r
Version Date: May 2019
Basis: Mav 2019 EPA RSL Table
Site ID:
Unit ID: IA-3
** - 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/1113.
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
CAS #
Chemical Name:
Indoor Air
Concentration
3
(ug/m)
Target Indoor
Air Cone. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Cone. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
100
2.7E+04
7.4E-04
71-43-2
Benzene
0.39
1.6E+00
2.6E+01
2.5E-07
3.0E-03
75-71-8
Dichlorodifluoromethane
2.1
8.8E+01
4.8E-03
100-41-4
Ethylbenzene
14
4.9E+00
8.8E+02
2.9E-06
3.2E-03
109-99-9
-Tetrahydrofuran
2.3
1.8E+03
2.6E-04
142-82-5
Heptane, N-
8.9
3.5E+02
5.1E-03
110-54-3
Hexane, N-
5.1
6.1E+02
1.7E-03
67-63-0
Isopropanol
6.2
1.8E+02
7.1E-03
78-93-3
Methyl Ethyl Ketone (2-Butanone)
140
4.4E+03
6.4E-03
91-20-3
-Naphthalene
10
3.6E-01
2.6E+00
2.8E-05
7.6E-01
127-18-4
Tetrachloroethylene
1.3
4.7E+01
3.5E+01
2.8E-08
7.4E-03
108-88-3
Toluene
150
4.4E+03
6.8E-03
75-69-4
Trichlorofluoromethane
3.2
108-67-8
Trimethylbenzene, 1,3,5-
2.5
5.3E+01
9.5E-03
106-42-3
Xylene, P-
88
8.8E+01
2.0E-01
108-38-3
Xylene, m-
0
8.8E+01
0.0E+00
95-47-6
Xylene, o-
36
8.8E+01
8.2E-02
Cumulative: I 3.1E-05 1.1 E+00
North Carolina DEQ Risk Calculator

IDEO Risk Calculator - VanOC Intrusion - Non -Residential Worker Indoor Air r
Version Date: May 2019
Basis: Mav 2019 EPA RSL Table
Site ID:
Unit ID: IA-4
** - 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/1113.
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
CAS #
Chemical Name:
Indoor Air
Concentration
3
(ug/m)
Target Indoor
Air Cone. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Cone. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
75
2.7E+04
5.5E-04
71-43-2
Benzene
0.32
1.6E+00
2.6E+01
2.0E-07
2.4E-03
75-71-8
Dichlorodifluoromethane
1.4
8.8E+01
3.2E-03
100-41-4
Ethylbenzene
7.8
4.9E+00
8.8E+02
1.6E-06
1.8E-03
109-99-9
-Tetrahydrofuran
1.7
1.8E+03
1.9E-04
142-82-5
Heptane, N-
3.8
3.5E+02
2.2E-03
110-54-3
Hexane, N-
0
6.1E+02
0.0E+00
67-63-0
Isopropanol
0
1.8E+02
0.0E+00
78-93-3
Methyl Ethyl Ketone (2-Butanone)
140
4.4E+03
6.4E-03
91-20-3
-Naphthalene
7.7
3.6E-01
2.6E+00
2.1E-05
5.9E-01
127-18-4
Tetrachloroethylene
0.76
4.7E+01
3.5E+01
1.6E-08
4.3E-03
108-88-3
Toluene
31
4.4E+03
1.4E-03
75-69-4
Trichlorofluoromethane
2.1
108-67-8
Trimethylbenzene, 1,3,5-
2
5.3E+01
7.6E-03
106-42-3
Xylene, P-
45
8.8E+01
1.0E-01
108-38-3
Xylene, m-
0
8.8E+01
0.0E+00
95-47-6
Xylene, o-
19
8.8E+01
4.3E-02
Cumulative: I 2.3E-05 7.6E-01
North Carolina DEQ Risk Calculator

APPENDIX F
INDOOR AIR RESIDENTIAL
RISK CALCULATIONS
IS Mid Atlantic

IDEO Risk Calculator - VaDor Intrusion - Resident Indoor Air
ersion Date: May 2019
asis: May 2019 EPA RSL Table
to ID:
Unit ID: AMB-1
** - 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 ue/m3
CAS #
Chemical Name:
Indoor Air
Concentration
3
(ug/m)
Target Indoor
Air Cone. 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
9.4
6.5E+03
2.9E-04
71-43-2
Benzene
0.22
3.6E-01
6.3E+00
6.1E-07
7.0E-03
75-71-8
Dichlorodifluoromethane
2
2.1E+01
1.9E-02
100-41-4
Ethylbenzene
0
1.1E+00
2.1E+02
0.0E+00
0.0E+00
109-99-9
-Tetrahydrofuran
0
4.2E+02
0.0E+00
142-82-5
Heptane, N-
0.2
8.3E+01
4.8E-04
110-54-3
Hexane, N-
0
1.5E+02
0.0E+00
67-63-0
Isopropanol
0
4.2E+01
0.0E+00
78-93-3
Methyl Ethyl Ketone (2-Butanone)
0
1.0E+03
0.0E+00
91-20-3
-Naphthalene
0.67
8.3E-02
6.3E-01
8.1E-06
2.1E-01
127-18-4
Tetrachloroethylene
0
1.1E+01
8.3E+00
0.0E+00
0.0E+00
108-88-3
Toluene
1.1
1.0E+03
2.1E-04
75-69-4
Trichlorofluoromethane
1
108-67-8
Trimethylbenzene, 1,3,5-
0
1.3E+01
0.0E+00
106-42-3
Xylene, P-
0.41
2.1E+01
3.9E-03
108-38-3
Xylene, m-
0
2.1E+01
0.0E+00
95-47-6
Xylene, o-
0.18
2.1E+01
1.7E-03
Cumulative: I 8.7E-06 I2.5E-01
North Carolina DEQ Risk Calculator

IDEO Risk Calculator - VaDor Intrusion - Resident Indoor Air
ersion Date: May 2019
asis: May 2019 EPA RSL Table
to ID:
Unit ID: IA-1
** - 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 ue/m3
CAS #
Chemical Name:
Indoor Air
Concentration
3
(ug/m)
Target Indoor
Air Cone. 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
79
6.5E+03
2.4E-03
71-43-2
Benzene
0.36
3.6E-01
6.3E+00
1.0E-06
1.2E-02
75-71-8
Dichlorodifluoromethane
2.3
2.1E+01
2.2E-02
100-41-4
Ethylbenzene
10
1.1E+00
2.1E+02
8.9E-06
9.6E-03
109-99-9
-Tetrahydrofuran
2.1
4.2E+02
1.0E-03
142-82-5
Heptane, N-
5.6
8.3E+01
1.3E-02
78-93-3
Methyl Ethyl Ketone (2-Butanone)
120
1.0E+03
2.3E-02
91-20-3
-Naphthalene
9
8.3E-02
6.3E-01
1.1E-04
2.9E+00
127-18-4
Tetrachloroethylene
0.89
1.1E+01
8.3E+00
8.2E-08
2.1E-02
108-88-3
Toluene
61
1.0E+03
1.2E-02
75-69-4
Trichlorofluoromethane
2.4
108-67-8
Trimethylbenzene, 1,3,5-
2.1
1.3E+01
3.4E-02
106-42-3
Xylene, P-
61
2.1E+01
5.8E-01
108-38-3
1 Xylene, m-
0
2.1E+01
0.0E+00
95-47-6
1 Xylene, o-
26
2.1E+01
2.5E-01
Cumulative: I 1.2E-04 I 3.9E+00
North Carolina DEQ Risk Calculator

IDEO Risk Calculator - VaDor Intrusion - Resident Indoor Air
ersion Date: May 2019
asis: May 2019 EPA RSL Table
to ID:
Unit ID: IA-1
** - 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 ue/m3
CAS #
Chemical Name:
Indoor Air
Concentration
3
(ug/m)
Target Indoor
Air Cone. 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
70
6.5E+03
2.2E-03
71-43-2
Benzene
0.34
3.6E-01
6.3E+00
9.4E-07
1.1E-02
75-71-8
Dichlorodifluoromethane
2.9
2.1E+01
2.8E-02
100-41-4
Ethylbenzene
9.7
1.1E+00
2.1E+02
8.6E-06
9.3E-03
109-99-9
-Tetrahydrofuran
2.1
4.2E+02
1.0E-03
142-82-5
Heptane, N-
5.5
8.3E+01
1.3E-02
67-63-0
Isopropanol
4.6
4.2E+01
2.2E-02
78-93-3
Methyl Ethyl Ketone (2-Butanone)
94
1.0E+03
1.8E-02
91-20-3
-Naphthalene
9.2
8.3E-02
6.3E-01
1.1E-04
2.9E+00
127-18-4
Tetrachloroethylene
0.95
1.1E+01
8.3E+00
8.8E-08
2.3E-02
108-88-3
Toluene
62
1.0E+03
1.2E-02
75-69-4
Trichlorofluoromethane
2.3
108-67-8
Trimethylbenzene, 1,3,5-
2
1.3E+01
3.2E-02
106-42-3
Xylene, P-
59
2.1E+01
5.7E-01
108-38-3
Xylene, m-
0
2.1E+01
0.0E+00
95-47-6
Xylene, o-
25
2.1E+01
2.4E-01
Cumulative: I 1.2E-04 I 3.9E+00
North Carolina DEQ Risk Calculator

IDEO Risk Calculator - VaDor Intrusion - Resident Indoor Air
ersion Date: May 2019
asis: May 2019 EPA RSL Table
to ID:
Unit ID: IA-2
** - 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 ue/m3
CAS #
Chemical Name:
Indoor Air
Concentration
3
(ug/m)
Target Indoor
Air Cone. 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
74
6.5E+03
2.3E-03
71-43-2
Benzene
0.78
3.6E-01
6.3E+00
2.2E-06
2.5E-02
75-71-8
Dichlorodifluoromethane
1.7
2.1E+01
1.6E-02
100-41-4
Ethylbenzene
9.5
1.1E+00
2.1E+02
8.5E-06
9.1E-03
109-99-9
-Tetrahydrofuran
2
4.2E+02
9.6E-04
142-82-5
Heptane, N-
5.5
8.3E+01
1.3E-02
67-63-0
Isopropanol
7.7
4.2E+01
3.7E-02
78-93-3
Methyl Ethyl Ketone (2-Butanone)
74
1.0E+03
1.4E-02
91-20-3
-Naphthalene
8.6
8.3E-02
6.3E-01
1.0E-04
2.7E+00
127-18-4
Tetrachloroethylene
0.91
1.1E+01
8.3E+00
8.4E-08
2.2E-02
108-88-3
Toluene
61
1.0E+03
1.2E-02
75-69-4
Trichlorofluoromethane
2.2
108-67-8
Trimethylbenzene, 1,3,5-
2
1.3E+01
3.2E-02
106-42-3
Xylene, P-
57
2.1E+01
5.5E-01
108-38-3
Xylene, m-
0
2.1E+01
0.0E+00
95-47-6
Xylene, o-
25
2.1E+01
2.4E-01
Cumulative: I 1.1E-04 I 3.7E+00
North Carolina DEQ Risk Calculator

IDEO Risk Calculator - VaDor Intrusion - Resident Indoor Air
ersion Date: May 2019
asis: May 2019 EPA RSL Table
to ID:
Unit ID: IA-3
** - 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 ue/m3
CAS #
Chemical Name:
Indoor Air
Concentration
3
(ug/m)
Target Indoor
Air Cone. 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
100
6.5E+03
3.1E-03
71-43-2
Benzene
0.39
3.6E-01
6.3E+00
1.1E-06
1.2E-02
75-71-8
Dichlorodifluoromethane
2.1
2.1E+01
2.0E-02
100-41-4
Ethylbenzene
14
1.1E+00
2.1E+02
1.2E-05
1.3E-02
109-99-9
-Tetrahydrofuran
2.3
4.2E+02
1.1E-03
142-82-5
Heptane, N-
8.9
8.3E+01
2.1E-02
110-54-3
Hexane, N-
5.1
1.5E+02
7.0E-03
67-63-0
Isopropanol
6.2
4.2E+01
3.0E-02
78-93-3
Methyl Ethyl Ketone (2-Butanone)
140
1.0E+03
2.7E-02
91-20-3
-Naphthalene
10
8.3E-02
6.3E-01
1.2E-04
3.2E+00
127-18-4
Tetrachloroethylene
1.3
1.1E+01
8.3E+00
1.2E-07
3.1E-02
108-88-3
Toluene
150
1.0E+03
2.9E-02
75-69-4
Trichlorofluoromethane
3.2
108-67-8
Trimethylbenzene, 1,3,5-
2.5
1.3E+01
4.0E-02
106-42-3
Xylene, P-
88
2.1E+01
8.4E-01
108-38-3
Xylene, m-
0
2.1E+01
0.0E+00
95-47-6
Xylene, o-
36
2.1E+01
3.5E-01
Cumulative: I 1.3E-04 I4.6E+00
North Carolina DEQ Risk Calculator

IDEO Risk Calculator - VaDor Intrusion - Resident Indoor Air
ersion Date: May 2019
asis: May 2019 EPA RSL Table
to ID:
Unit ID: IA-4
** - 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 ue/m3
CAS #
Chemical Name:
Indoor Air
Concentration
3
(ug/m)
Target Indoor
Air Cone. 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
75
6.5E+03
2.3E-03
71-43-2
Benzene
0.32
3.6E-01
6.3E+00
8.9E-07
1.0E-02
75-71-8
Dichlorodifluoromethane
1.4
2.1E+01
1.3E-02
100-41-4
Ethylbenzene
7.8
1.1E+00
2.1E+02
6.9E-06
7.5E-03
109-99-9
-Tetrahydrofuran
1.7
4.2E+02
8.2E-04
142-82-5
Heptane, N-
3.8
8.3E+01
9.1E-03
110-54-3
Hexane, N-
0
1.5E+02
0.0E+00
67-63-0
Isopropanol
0
4.2E+01
0.0E+00
78-93-3
Methyl Ethyl Ketone (2-Butanone)
140
1.0E+03
2.7E-02
91-20-3
-Naphthalene
7.7
8.3E-02
6.3E-01
9.3E-05
2.5E+00
127-18-4
Tetrachloroethylene
0.76
1.1E+01
8.3E+00
7.0E-08
1.8E-02
108-88-3
Toluene
31
1.0E+03
5.9E-03
75-69-4
Trichlorofluoromethane
2.1
108-67-8
Trimethylbenzene, 1,3,5-
2
1.3E+01
3.2E-02
106-42-3
Xylene, P-
45
2.1E+01
4.3E-01
108-38-3
Xylene, m-
0
2.1E+01
0.0E+00
95-47-6
Xylene, o-
19
2.1E+01
1.8E-01
Cumulative: I 1.0E-04 I3.2E+00
North Carolina DEQ Risk Calculator

APPENDIX G
ADJUSTED VALUES INDOOR AIR NON-RESIDENTIAL
RISK CALCULATIONS
IS Mid Atlantic

DEQ Risk Calculator - Vapor Intrusion - Non -Residential Worker Indoor Air Llama WITow
Version Date: May 2019
Basis: May 2019 EPA RSL Table
Site ID: _:2L a
Unit ID: Adiusted values IA-1
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic
risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 µg/m3.
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if
indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are
likely not associated with vapor intrusion.
All concentrations are in uo/m3
CAS #
Chemical Name:
Indoor Air
Concentration
3
(ug/m)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
79
2.7E+04
5.8E-04
7143-2
Benzene
0.36
1.6E+00
2.6E+01
2.3E-07
2.7E-03
75-71-8
Dichlorodifluoromethane
0.47
8.8E+01
1.1E-03
100-41-4
Eth lbenzene
0.83
4.9E+00
8.8E+02
1.7E-07
1.9E-04
109-99-9
-Tetrah drofuran
2.1
1.8E+03
2.4E-04
142-82-5
Heptane, N-
0.41
3.5E+02
2.3E-04
78-93-3
Methyl Ethyl Ketone 2-Butanone
120
4.4E+03
5.5E-03
91-20-3
-Naphthalene
0.68
3.6E-01
2.6E+00
1.9E-06
5.2E-02
127-184
Tetrachloroeth lene
0.89
4.7E+01
3.5E+01
1.9E-08
5.1E-03
108-88-3
Toluene
9.15
4.4E+03
4.2E-04
75-694
Trichlorofluoromethane
2.4
108-67-8
Trimeth lbenzene, 1,3,5-
2.1
5.3E+01
8.0E-03
10642-3
X lene, P-
3.56
8.8E+01
8.1E-03
108-38-3
1 X lene, m-
0
8.8E+01
0.0E+00
9547-6
1 X lene, o-
1.14
8.8E+01
2.6E-03
Cumulative: I 2.3E-06 8.7E-02
North Carolina DEQ Risk Calculator

DEQ Risk Calculator - Vapor Intrusion - Non -Residential Worker Indoor Air Llama WITow
Version Date: May 2019
Basis: May 2019 EPA RSL Table
Site ID: :2L a
Unit ID: Adiusted values IA-1
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic
risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 µg/m3.
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if
indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are
likely not associated with vapor intrusion.
All concentrations are in uo/m3
CAS #
Chemical Name:
Indoor Air
Concentration
3
(ug/m)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
70
2.7E+04
5.2E-04
7143-2
Benzene
0.34
1.6E+00
2.6E+01
2.2E-07
2.6E-03
75-71-8
Dichlorodifluoromethane
0.47
8.8E+01
1.1E-03
100-41-4
Eth lbenzene
0.83
4.9E+00
8.8E+02
1.7E-07
1.9E-04
109-99-9
-Tetrah drofuran
2.1
1.8E+03
2.4E-04
142-82-5
Heptane, N-
0.41
3.5E+02
2.3E-04
110-54-3
Hexane, N-
1.05
6.1E+02
3.4E-04
67-63-0
Iso ro anol
4.6
1.8E+02
5.3E-03
78-93-3
Methyl Ethyl Ketone 2-Butanone
94
4.4E+03
4.3E-03
91-20-3
-Naphthalene
0.68
3.6E-01
2.6E+00
1.9E-06
5.2E-02
127-184
Tetrachloroeth lene
0.95
4.7E+01
3.5E+01
2.0E-08
5.4E-03
108-88-3
Toluene
9.15
4.4E+03
4.2E-04
75-694
Trichlorofluoromethane
2.3
108-67-8
Trimeth lbenzene, 1,3,5-
2
5.3E+01
7.6E-03
10642-3
X lene, P-
3.56
8.8E+01
8.1E-03
108-38-3
X lene, m-
0
8.8E+01
0.0E+00
9547-6
X lene, o-
1.14
8.8E+01
2.6E-03
Cumulative: I 2.3E-06 9.1E-02
North Carolina DEQ Risk Calculator

DEQ Risk Calculator - Vapor Intrusion - Non -Residential Worker Indoor Air Llama WITow
Version Date: May 2019
Basis: May 2019 EPA RSL Table
Site ID: _:2L a
Unit ID: Adiusted values IA-2
** - 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 cnncentrntions are in uo/m3
CAS #
Chemical Name:
Indoor Air
Concentration
3
(ug/m)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
74
2.7E+04
5.4E-04
7143-2
Benzene
0.78
1.6E+00
2.6E+01
5.0E-07
5.9E-03
75-71-8
Dichlorodifluoromethane
0.1
8.8E+01
2.3E-04
100-41-4
Eth lbenzene
1.08
4.9E+00
8.8E+02
2.2E-07
2.5E-04
109-99-9
-Tetrah drofuran
2
1.8E+03
2.3E-04
142-82-5
He tane, N-
0.42
3.5E+02
2.4E-04
110-54-3
Hexane, N-
0.66
6.1E+02
2.2E-04
67-63-0
Iso ro anol
7.7
1.8E+02
8.8E-03
78-93-3
Methyl Ethyl Ketone 2-Butanone
74
4.4E+03
3.4E-03
91-20-3
-Naphthalene
0.63
3.6E-01
2.6E+00
1.7E-06
4.8E-02
127-184
Tetrachloroeth lene
0.91
4.7E+01
3.5E+01
1.9E-08
5.2E-03
108-88-3
Toluene
10.68
4.4E+03
4.9E-04
75-694
Trichlorofluoromethane
2.2
108-67-8
Trimeth lbenzene, 1,3,5-
2
5.3E+01
7.6E-03
10642-3
X lene, P-
5.08
8.8E+01
1.2E-02
108-38-3
X lene, m-
0
8.8E+01
0.0E+00
9547-6
X lene, o-
1.63
8.8E+01
3.7E-03
Cumulative: I 2.5E-06 9.6E-02
North Carolina DEQ Risk Calculator

DEQ Risk Calculator - Vapor Intrusion - Non -Residential Worker Indoor Air Llama WITow
Version Date: May 2019
Basis: May 2019 EPA RSL Table
Site ID: _:2L a
Unit ID: Adiusted values IA-3
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic
risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 µg/m3.
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if
indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are
likely not associated with vapor intrusion.
All concentrations are in uo/m3
CAS #
Chemical Name:
Indoor Air
Concentration
3
(ug/m)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
100
2.7E+04
7.4E-04
7143-2
Benzene
0.39
1.6E+00
2.6E+01
2.5E-07
3.0E-03
75-71-8
Dichlorodifluoromethane
0.1
8.8E+01
2.3E-04
100-41-4
Eth lbenzene
1.07
4.9E+00
8.8E+02
2.2E-07
2.4E-04
109-99-9
-Tetrah drofuran
2.3
1.8E+03
2.6E-04
142-82-5
Heptane, N-
0.31
3.5E+02
1.8E-04
110-54-3
Hexane, N-
0.61
6.1E+02
2.0E-04
67-63-0
Iso ro anol
6.2
1.8E+02
7.1E-03
78-93-3
Methyl Ethyl Ketone 2-Butanone
140
4.4E+03
6.4E-03
91-20-3
-Naphthalene
0.73
3.6E-01
2.6E+00
2.0E-06
5.6E-02
127-184
Tetrachloroeth lene
1.3
4.7E+01
3.5E+01
2.8E-08
7.4E-03
108-88-3
Toluene
12.54
4.4E+03
5.7E-04
75-694
Trichlorofluoromethane
3.2
108-67-8
Trimeth lbenzene, 1,3,5-
2.5
5.3E+01
9.5E-03
10642-3
X lene, P-
5.08
8.8E+01
1.2E-02
108-38-3
X lene, m-
0
8.8E+01
0.0E+00
9547-6
X lene, o-
1.47
8.8E+01
3.4E-03
Cumulative: I 2.5E-06 1.1E-01
North Carolina DEQ Risk Calculator

DEQ Risk Calculator - Vapor Intrusion - Non -Residential Worker Indoor Air Llama WITow
Version Date: May 2019
Basis: May 2019 EPA RSL Table JL
Site ID: ft�_
Unit ID: Adiustes values IA-4
** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate carcinogenic
risk or hazard quotient. Lead concentrations are compared to the National Ambient Air Quality Standard of 0.15 µg/m3.
Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Risks are calculated for these values if
indoor air concentrations are entered and indoor air screening levels have been established, but it should be noted that detections of these chemicals are
likely not associated with vapor intrusion.
All concentrations are in uo/m3
CAS #
Chemical Name:
Indoor Air
Concentration
3
(ug/m)
Target Indoor
Air Conc. for
Carcinogens @
TCR = 1E-06
Target Indoor Air
Conc. for Non-
Carcinogens @
THQ = 0.2
Calculated
Carcinogenic
Risk
Calculated
Non -
Carcinogenic
Hazard
Quotient
67-64-1
Acetone
75
2.7E+04
5.5E-04
7143-2
Benzene
0.32
1.6E+00
2.6E+01
2.0E-07
2.4E-03
75-71-8
Dichlorodifluoromethane
0.1
8.8E+01
2.3E-04
100-41-4
Eth lbenzene
0.75
4.9E+00
8.8E+02
1.5E-07
1.7E-04
109-99-9
-Tetrah drofuran
1.7
1.8E+03
1.9E-04
142-82-5
Heptane, N-
0.36
3.5E+02
2.1E-04
110-54-3
Hexane, N-
0.32
6.1E+02
1.0E-04
67-63-0
Iso ro anol
0
1.8E+02
0.0E+00
78-93-3
Methyl Ethyl Ketone 2-Butanone
140
4.4E+03
6.4E-03
91-20-3
-Naphthalene
0.92
3.6E-01
2.6E+00
2.6E-06
7.0E-02
127-184
Tetrachloroeth lene
0.76
4.7E+01
3.5E+01
1.6E-08
4.3E-03
108-88-3
Toluene
12.37
4.4E+03
5.6E-04
75-694
Trichlorofluoromethane
2.1
108-67-8
Trimeth lbenzene, 1,3,5-
2
5.3E+01
7.6E-03
10642-3
X lene, P-
3.39
8.8E+01
7.7E-03
108-38-3
X lene, m-
0
8.8E+01
0.0E+00
9547-6
X lene, o-
1.1
8.8E+01
2.5E-03
Cumulative: I 2.9E-06 1.0E-0 l
North Carolina DEQ Risk Calculator

APPENDIX H
ADJUSTED VALUES INDOOR AIR RESIDENTIAL
RISK CALCULATIONS
IS Mid Atlantic

DEQ Risk Calculator - Vapor Intrusion - Resident Indoor Air
Version Date:
May 2019
Basis: May 2019 EPA RSL Table
Site ID:
Exposure Unit ID: Adjusted values IA-1
** - 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
3.6E-01
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
79
-
6.5E+03
2.4E-03
71-43-2
Benzene
0.36
3.6E-01
6.3E+00
1.0E-06
1.2E-02
75-71-8
Dichlorodifluoromethane
0.47
-
2.1E+01
4.5E-03
100-41-4
Eth lbenzene
0.83
1.1E+00
2.1E+02
7.4E-07
8.0E-04
109-99-9
-Tetrah drofuran
2.1
-
4.2E+02
1.0E-03
142-82-5
Heptane, N-
0.41
-
8.3E+01
9.8E-04
110-54-3
Hexane, N-
1.05
-
1.5E+02
1.4E-03
78-93-3
Methyl Ethyl Ketone (2-Butanone)
120
-
1.0E+03
2.3E-02
91-20-3
_Naphthalene
0.68
8.3E-02
6.3E-01
8.2E-06
2.2E-01
127-18-4
Tetrachloroethylene
0.89
1.1E+01
8.3E+00
8.2E-08
2.1E-02
108-88-3
Toluene
9.15
-
1.0E+03
1.8E-03
75-69-4
Trichlorofluoromethane
2.4
-
-
108-67-8
Trimethylbenzene, 1,3,5-
2.1
-
1.3E+01
3.4E-02
106-42-3
Xylene, P-
3.56
-
2.1E+01
3.4E-02
108-38-3
Xylene, in-
0
-
2.1E+01
0.0E+00
95-47-6
Xylene, o-
1.14
-
2.1E+01
1.1E-02
North Carolina DEQ Risk Calculator

DEQ Risk Calculator - Vapor Intrusion - Resident Indoor Air
Version Date: May 2019
Basis: May 2019 EPA RSL Table
Site ID:
Exposure Unit ID: Adjusted values IA-1 Duplicate
** - 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
3.8E-01
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
70
-
6.5E+03
2.2E-03
71-43-2
Benzene
0.34
3.6E-01
6.3E+00
9.4E-07
1.1E-02
75-71-8
Dichlorodifluoromethane
0.47
-
2.1E+01
4.5E-03
100-41-4
Eth lbenzene
0.83
1.1E+00
2.1E+02
7.4E-07
8.0E-04
109-99-9
-Tetrah drofuran
2.1
-
4.2E+02
1.0E-03
142-82-5
Heptane, N-
0.41
-
8.3E+01
9.8E-04
110-54-3
Hexane, N-
1.05
-
1.5E+02
1.4E-03
67-63-0
Isopropanol
4.6
-
4.2E+01
2.2E-02
78-93-3
Methyl Ethyl Ketone (2-Butanone)
94
-
1.0E+03
1.8E-02
91-20-3
_Naphthalene
0.68
8.3E-02
6.3E-01
8.2E-06
2.2E-01
127-18-4
Tetrachloroethylene
0.95
1.1E+01
8.3E+00
8.8E-08
2.3E-02
108-88-3
Toluene
9.15
-
1.0E+03
1.8E-03
75-69-4
Trichlorofluoromethane
2.3
-
-
108-67-8
Trimethylbenzene, 1,3,5-
2
-
1.3E+01
3.2E-02
106-42-3
Xylene, P-
3.56
-
2.1E+01
3.4E-02
108-38-3
Xylene, in-
0
-
2.1E+01
0.0E+00
95-47-6
Xylene, o-
1.14
-
2.1E+01
1.1E-02
North Carolina DEQ Risk Calculator

DEQ Risk Calculator - Vapor Intrusion - Resident Indoor Air
Version Date:
May 2019
Basis: May 2019 EPA RSL Table
Site ID:
Exposure Unit ID: Adjusted values IA-2
** - 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
4.0E-01
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
74
-
6.5E+03
2.3E-03
71-43-2
Benzene
0.78
3.6E-01
6.3E+00
2.2E-06
2.5E-02
75-71-8
Dichlorodifluoromethane
0.1
-
2.1E+01
9.6E-04
100-41-4
Eth lbenzene
1.08
1.1E+00
2.1E+02
9.6E-07
1.0E-03
109-99-9
-Tetrah drofuran
2
-
4.2E+02
9.6E-04
142-82-5
Heptane, N-
0.42
-
8.3E+01
1.0E-03
110-54-3
Hexane, N-
0.66
-
1.5E+02
9.0E-04
67-63-0
Isopropanol
7.7
-
4.2E+01
3.7E-02
78-93-3
Methyl Ethyl Ketone (2-Butanone)
74
-
1.0E+03
1.4E-02
91-20-3
_Naphthalene
0.63
8.3E-02
6.3E-01
7.6E-06
2.0E-01
127-18-4
Tetrachloroethylene
0.91
1.1E+01
8.3E+00
8.4E-08
2.2E-02
108-88-3
Toluene
10.68
-
1.0E+03
2.0E-03
75-69-4
Trichlorofluoromethane
2.2
-
-
108-67-8
Trimethylbenzene, 1,3,5-
2
-
1.3E+01
3.2E-02
106-42-3
Xylene, P-
5.08
-
2.1E+01
4.9E-02
108-38-3
Xylene, in-
0
-
2.1E+01
0.0E+00
95-47-6
Xylene, o-
1.63
-
2.1E+01
1.6E-02
North Carolina DEQ Risk Calculator

DEQ Risk Calculator - Vapor Intrusion - Resident Indoor Air
Version Date:
May 2019
Basis: May 2019 EPA RSL Table
Site ID:
Exposure Unit ID: Adjusted values IA-3
** - 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
4.5E-01
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
100
-
6.5E+03
3.1E-03
71-43-2
Benzene
0.39
3.6E-01
6.3E+00
1.1E-06
1.2E-02
75-71-8
Dichlorodifluoromethane
0.1
-
2.1E+01
9.6E-04
100-41-4
Eth lbenzene
1.07
1.1E+00
2.1E+02
9.5E-07
1.0E-03
109-99-9
-Tetrah drofuran
2.3
-
4.2E+02
1.1E-03
142-82-5
Heptane, N-
0.31
-
8.3E+01
7.4E-04
110-54-3
Hexane, N-
0.61
-
1.5E+02
8.4E-04
67-63-0
Isopropanol
6.2
-
4.2E+01
3.0E-02
78-93-3
Methyl Ethyl Ketone (2-Butanone)
140
-
1.0E+03
2.7E-02
91-20-3
_Naphthalene
0.73
8.3E-02
6.3E-01
8.8E-06
2.3E-01
127-18-4
Tetrachloroethylene
1.3
1.1E+01
8.3E+00
1.2E-07
3.1E-02
108-88-3
Toluene
12.54
-
1.0E+03
2.4E-03
75-69-4
Trichlorofluoromethane
3.2
-
-
108-67-8
Trimethylbenzene, 1,3,5-
2.5
-
1.3E+01
4.0E-02
106-42-3
Xylene, P-
5.08
-
2.1E+01
4.9E-02
108-38-3
Xylene, in-
0
-
2.1E+01
0.0E+00
95-47-6
Xylene, o-
1.47
-
2.1E+01
1.4E-02
North Carolina DEQ Risk Calculator

DEQ Risk Calculator - Vapor Intrusion - Resident Indoor Air
Version Date:
May 2019
Basis: May 2019 EPA RSL Table
Site ID:
Exposure Unit ID: Ad'ustes values IA-4
** - 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
4.3E-01
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
75
-
6.5E+03
2.3E-03
71-43-2
Benzene
0.32
3.6E-01
6.3E+00
8.9E-07
1.0E-02
75-71-8
Dichlorodifluoromethane
0.1
-
2.1E+01
9.6E-04
100-41-4
Eth lbenzene
0.75
1.1E+00
2.1E+02
6.7E-07
7.2E-04
109-99-9
-Tetrah drofuran
1.7
-
4.2E+02
8.2E-04
142-82-5
Heptane, N-
0.36
-
8.3E+01
8.6E-04
110-54-3
Hexane, N-
0.32
-
1.5E+02
4.4E-04
67-63-0
Isopropanol
0
-
4.2E+01
0.0E+00
78-93-3
Methyl Ethyl Ketone (2-Butanone)
140
-
1.0E+03
2.7E-02
91-20-3
_Naphthalene
0.92
8.3E-02
6.3E-01
1.1E-05
2.9E-01
127-18-4
Tetrachloroethylene
0.76
1.1E+01
8.3E+00
7.0E-08
1.8E-02
108-88-3
Toluene
12.37
-
1.0E+03
2.4E-03
75-69-4
Trichlorofluoromethane
2.1
-
-
108-67-8
Trimethylbenzene, 1,3,5-
2
-
1.3E+01
3.2E-02
106-42-3
Xylene, P-
3.39
-
2.1E+01
3.3E-02
108-38-3
Xylene, in-
0
-
2.1E+01
0.0E+00
95-47-6
Xylene, o-
1.1
-
2.1E+01
1.1E-02
North Carolina DEQ Risk Calculator

APPENDIX I
PHOTOGRAPHIC LOG OF SAMPLE LOCATIONS
IS Mid Atlantic

Photo 1 — Sub -slab soil gas sample collected from
Azure Violins, Suite 119.
Photo 3 — Sample location of SS-2 in Little Makers
Academy, Suite 118.
Photo 5 — Indoor Air sampling conducted in Little
Makers Academy.
Photo 7 — Indoor Air sampling conducted in Suite 17
Gateway Plaza — 2427 Crabtree Boulevard
Raleigh, North Carolina
Photo 2 — Sample location of Sub -slab soil gas
sample SS-5 in Suite 117.
Photo 4 — Indoor Air sampling conducted in Little
Makers Academy.
Photo 6 — Indoor Air sampling conducted in Azure
Violins, Suite 119.
Photo 8 — Outdoor Ambient Air sampling conducted in
parking lot of site.
Mid -Atlantic Associates, Inc. August 2019