17046_W Lewis St _VIR_20231113

Pyramid Environmental & Engineering, P.C. Project # 2023-009
West Lewis Street
REVISED
INDOOR AIR QUALITY (IAQ) ASSESSMENT REPORT
WEST LEWIS STREET BROWNFIELDS PROJECT
AT 109, 111, 113, 115, 117—B, & 120 W. LEWIS STREET
GREENSBORO, NC (GUILFORD COUNTY)
Brownfields Site Name: # 17046-13-041 : West Lewis Street Site
& Former Model Linen BFA
These two project Sites are being combined
Report Prepared for: AZ Development, LLC
Andy Zimmerman
111 W. Lewis Street, Greensboro, NC 27401
Email: [e-mail]
Phone: [phone]
Date Prepared: 11-10-2023
Report Submitted to: NCBRS PM: Ms. Sharon Poissant Eckard, PG
NC Brownfields Redevelopment Section
1646 Mail Service Center, Raleigh, NC 27699-1646
Email: [e-mail]
Phone: [phone]
Report Prepared By:
Michael G. Jones,
License #1168
``1110409f1t/B°
,N CAg041
ENSFC7 :L,9
AL
1168
NOQ,GJ:
A15!��'i F�• G
`0i�erIItilll��
PYRAMID ENVIRONMENTAL & ENGINEERING, P.C.
503 INDUSTRIAL AVE., GREENSBORO, NC 27406
Email: [e-mail]
Phone: [phone]
NC Geology License C-257 NC Engineering License C-1251

Table of Contents
1.0
EXECUTIVE SUMMARY................................................................1
2.0
INTRODUCTION..........................................................................2
2.1
NCDEQ REQUESTED VI WORK.......................................................................2
2.2
BROWNFIELDS RECEPTOR SURVEY....................................................................2
3.0
IAQ WORK PLAN SUMMARY......................................................3
3.1
INDOOR AIR SAMPLING.................................................................................4
3.2
CRAWL SPACE SAMPLING...............................................................................5
3.3
DUPLICATE SAMPLING...................................................................................6
3.4
TO-15 LABORATORY ANALYSES......................................................................6
3.5
QUALITY ASSURANCE / QUALITY CONTROL PROCEDURES.......................................7
4.0
INDOOR AIR QUALITY RESULTS...................................................8
4.1
IAQ SAMPLES AT 109 & 111 W. LEWIS STREET - INDOOR AIR AT TRANSFORM GSO .8
4.2
IAQ SAMPLES AT 117-B W. LEWIS STREET - CRAWLSPACE UNDER PUB ...................8
4.3
IAQ SAMPLES AT 120 W. LEWIS STREET - INDOOR AIR AT BOXCAR ........................9
5.0
CONCLUSIONS..........................................................................10
6.0
RECOMMENDATIONS...............................................................11
7.0
CLOSING...................................................................................11
Page 1

Table of Contents
(Continued)
Figures
Figure 1 :
Topographic Map
Figure 2 :
Property Location Aerial Map
Figure 3 :
Area Map Showing Dry Cleaner Sites
Figure 4 :
Estimated Groundwater Flow Direction
Figure 5 :
Aerial Map with Proposed Sample Locations
Figure 6 :
Locations of IAQ Samples at 109 — 111 W. Lewis Street (Transform GSO)
Figure 7 :
Location of CS Sample at 117B W. Lewis Street ( Pub )
Figure 8 :
Locations of IAQ Samples at 120 W. Lewis Street ( Boxcar )
Tables
Table 1 : Chronology of Assessment Work
Table 2 : Addresses, Building Size, & Foundation Description
Appendices
Appendix A: IAQ Work Plan ( 01-04-2023 ) & Brownfields approval ( 06-15-2023 )
Appendix B : Indoor Air Building Survey & Sampling Forms
Appendix C : Photos of Sampling & Inventory / Cleaning Products
Appendix D : Field Sheets from Air Sampling ( 09-25-2023 )
Appendix E: Pace Analytical TO-15 Report from 09-25-2023 Sampling
Appendix F: DEQ Risk Calculator Runs — Indoor Air — 109 & 111 W. Lewis St.
Appendix G: DEQ Risk Calculator Runs — Indoor Air — 117-B W. Lewis St.
Appendix H: DEQ Risk Calculator Runs — Indoor Air — 120 W. Lewis St.
Page 11

Acronyms
AA.....................Administrative
Agreement (REC Program)
BFA ...................
Brownfields Agreement
BLS....................Below
Land Surface
CFR ...................Code
of Federal Regulations
COC ...................Constituent
of Concern
CS .....................Crawlspace
DEQ..................Department
of Environment Quality
DSCA.................Drycleaner
Solvent Cleanup Act
EC.....................Environmental
Consultant
EMP ..................Environmental
Management Plan (EMP)
HASP.................Health
& Safety Plan
HVAC................Heating
Ventilation and Air -Conditioning
IHSB..................Inactive
Hazardous Sites Branch
IASL...................Indoor
Air Screening Levels
LURs .................Land
Use Restrictions
MSL...................Mean
Sea level
NIOSH...............National
Institute for Occupational Safety and Health
NCBRS...............North
Carolina Brownfields Redevelopment Section
NVLAP...............National
Voluntary Laboratory Accreditation Program
OSHA ................Occupational
Safety and Health Administration
OVA ..................Organic
Vapor Analyzer
PCE...................Tetrachloroethene
PDF...................Portable
Document Format
PID....................Photo-ionization
Detector
PPM..................Parts
Per Million
PSRGs ...............Preliminary
Soil Remediation Goals
PVC ...................Poly
-vinyl Chloride
QA ....................Quality
Assurance
QC.....................Quality
Control
SSV....................Sub-Slab
Vapor
PCE...................Tetrachloroethylene
TICS ...................Tentatively
Identified Compounds
TCE...................Trichloroethylene
USEPA...............United
States Environmental Protection Agency
VC.....................Vinyl
Chloride
VI ......................Vapor
Intrusion
VISLs.................Vapor
Intrusion Screening Levels
VOC ..................Volatile
Organic Compounds
US EPA..............United
States Environmental Protection Agency
Page ///

Pyramid Environmental & Engineering, PC PYRAMID
1.0 Executive Summary
In 2020, AZ Development started the process of combining two sites named Model Linen and
West Lewis Street into one site under a new Brownfields Agreement. During the evaluation, the
NC Brownfields Redevelopment Section (NCBRS) observed that Vapor Intrusion (VI) assessment
had not been completed for the sites. Because of the VI data gap, the NCBRS Project Manager
required a vapor intrusion (VI) study for the properties to support the new BFA.
In the Fall of 2021, Pyramid was contacted by AZ Development to prepare and submit a Work
Plan for Sub -Slab Vapor (SSV) and Crawlspace (CS) air sample collection and analyses at the West
Lewis Street Site and the Model Linen Site. The location of these two sites are at addresses 109,
111, 113, 115, 117, 117-13, & 120 West Lewis Street in Greensboro, NC. The property use has
varied over time and has included commercial businesses, a commercial laundry facility, and dry
cleaning uses until the 1990s.
On October 27, 2021, Pyramid completed the SSV/CS Work Plan which was approved by the
NCBRS Project Manager, and Pyramid was authorized to complete the VI assessment by AZ
Development. The plan included the collection of twenty five (25) air samples (23 samples and
two duplicates) as SSV and crawlspace samples in the various buildings.
In December 2021, Pyramid conducted SSV/CS air sampling for 109, 111, 115, 117, and 117-B W.
Lewis Street, the properties of the West Lewis Street Brownfields Site. The samples were
collected in accordance with the approved work plan. After receiving access to the Model Linen
Site (Boxcar) in January 2022, Pyramid collected SSV samples at 120 West Lewis Street.
SSV/CS samples were collected in accordance with the approved Work Plan. The Model Linen
SSV analytical results indicated high concentrations of Tetrachloroethylene (PCE) were detected
below the concrete slab in SSV-14, SSV-17, SSV19, & SSV-21. Three low detections of
Trichloroethylene (TCE) were detected below the Non -Residential Worker SSV Screening Levels.
Pyramid reviewed the previous assessment data from 2003, 2004, and 2014 which showed
concentrations of PCE and TCE detected in groundwater.
The NCBRS project manager reviewed the SSV/CS data from 2021/2022 and requested VI
mitigation at 117B as a first step in correspondence dated March 24, 2022, with indoor air
samples to follow. The NCBRS project manager recommended a meeting with Kelly Johnson to
review mitigation options on June 15, 2022 and reiterated mitigation should occur prior to
resampling. After discussions, the DEQ project manager requested an addendum to the prior
work plan as a letter and figure on 11-7-2022 and also indicated that as long as the same
protocols were used, DEQ was OK with getting one additional sample in the crawlspace under
the pub. The January 2023 work plan was updated to include CS-1313, and fewer samples were
collected at the Boxcar Events center. The VI assessment was implemented in September 2023.
The VI data are necessary to complete the new Brownfields Agreement (BFA) and to evaluate
vapor intrusion mitigation steps for the Brownfields Property.
AZ Development / West Lewis Street Brownfields Site / IAQ Assessment Report Page 1
Pyramid Environmental & Engineering, PC-2023-009 11-03-2023

Pyramid Environmental & Engineering, PC PYRAMID
2.0 Introduction
On behalf of AZ Development, Pyramid Environmental & Engineering, PC (Pyramid) prepared a
Work Plan Dated 01-04-2023 which was reviewed by the NCBRS and was approved for sampling
in an Email dated June 15, 2023. The DEQ Project Manager mentioned the need for mitigation
in earlier emails for the area beneath 117-B (the Pub). The final Work Plan is attached in
Appendix A and the site history is summarized Table 1 and Table 2. The September VI study was
completed for the new West Lewis Street Brownfields Site.
The new Brownfields Agreement is nearing completion, and the new Brownfields Site will be
named West Lewis Street (Brownfields Site # 17046-13-041). The Indoor Air Quality (IAQ) study
was completed to help fill VI data gaps.
2.1 NCDEQ Requested Work
In March 2020, NC Brownfields Redevelopment Section (NCBRS) requested sub -slab vapor (SSV)
and Crawlspace (CS) data for both the Model Linen and West Lewis Street sites to fill the "data
gap" for VI data. In late 2021 and early 2022, Pyramid planned and completed the SSV/CS
sampling with the building owner and tenants. The SSV and CS data were previously reporting
the March 16, 2022 report prepared by Pyramid. The following Figures are provided as
explanation of the SSV / CS assessment (03-16-2022).
Figure 1 - Topographic Map
Figure 2 - Property Location Aerial Map
Figure 3 - Surrounding Area Map — Dry Cleaners
Figure 4 - Estimated Groundwater Flow Direction
Figure 5 - Aerial Map with SSV / CS Sample Locations
2.2 Brownfields Receptor Survey
The site location is in downtown Greensboro at an approximate elevation of 835 feet above mean
sea level (msl). The area is near the topographic high along West Lewis Street, and stormwater
from the site appears to move to the south and southeast toward a nearby surface water stream.
The closest surface water is located about 1,400 feet south of the site, and flows to the south.
Pyramid conducted a receptor survey and searched for water supply wells within 1,000 feet of
the site. In addition, the Guilford County Water Department was contacted to confirm that all
properties within 1,000 feet are connected to City water. Pyramid did not observe any drinking
water wells within 1,000 feet of the site and all properties have access to city water.
AZ Development / West Lewis Street Brownfields Site / IAQ Assessment Report Page 2
Pyramid Environmental & Engineering, PC-2023-009 11-03-2023

Pyramid Environmental & Engineering, PC PYRAMID
In addition, Pyramid completed a search for other dry cleaner facilities within % mile of this
location. The nearest DSCA site is Odorless Dry Cleaner s that is located 210 feet southwest of
the West Lewis Street Site, and is at a lower elevation. The Model Linen and W. Lewis Sites are
topographically at a high point in the surrounding area and do not receive stormwater flow from
other properties. The resulting map of locations from the DSCA Program map is presented as
Figure 3.
The Plans for redevelopment of the West Lewis Street Brownfields site considered the following
property use and construction elements presented below.
• Redevelopment plans will not include new structures on the properties
• No foundation changes are proposed, and each building is connected to public utilities
• There are no basements in the buildings
• One crawl -space is accessible ( underneath the Pub at 117-B West Lewis Street )
• There are no elevators or enclosed stairwells in the buildings
• Parking is outside on paved surfaces and along the street
• There are two other dry cleaning facilities reported within 300 feet of the site
The 2021/2022, SV/CS sample locations are described in the Pyramid report dated 03-16-2022,
which was previously submitted to the NCBRS.
3.0 IAQ Work Plan Summary
Based on the 2021-2022 SSV and CS sample results from the site, the NCBRS reviewed the
analytical data, evaluated the risk using the DEQ Risk Calculator, and requested indoor air quality
sampling. Review of the 2021-2022 SSV/CS data indicated that the Non -Residential Worker
Vapor Intrusion Screening Levels (VISLs) were exceeded for 11713-1 with a hazard index (HI) of 2.2
using January 2022 Risk calculator. The SSV Hazard Index values in the other areas were between
0.23 and 0.87, and DEQ indicated that they may recommend VI mitigation system. DEQ
requested a meeting to discuss mitigation options and that the PD should perform mitigation first
before collecting indoor air samples. It was the PD team that requested the repeat crawlspace
sample after foundation ventilation was added to the 11713-1 crawlspace vents to assist in air
flow beneath the pub. However, since the VISLs for PCE were exceeded at 11713-1, NCBRS
required completion of indoor air quality (IAQ) samples at West Lewis Street locations. Pyramid
discussed the Indoor Air Quality (IAQ) sample locations with the NCBRS, and the selected
locations are shown in the work plan figures presented in Appendix A.
AZ Development / West Lewis Street Brownfields Site / IAQ Assessment Report Page 3
Pyramid Environmental & Engineering, PC-2023-009 11-03-2023

Pyramid Environmental & Engineering, PC PYRAMID
The required Indoor Air Quality (IAQ) sampling was discussed and the work plan was submitted
in January 2023, and final approval of the work plan was approved in June 15, 2023 and reflected
minor changes in scope. The work plan is presented as Appendix A in this report and the
locations of the samples are shown on the following figures.
Figure 6 - Locations of IAQ Samples at 109 —111 W. Lewis Street
Figure 7 - Location of CS Sample at 117 B-1 W. Lewis Street
Figure 8 - Locations of IAQ Samples (and Duplicate) at 120 W. Lewis Street
3.1 Indoor Air Sampling
The proposed assessment activities were performed in accordance with DEQ's Inactive
Hazardous Sites Branch (IHSB) Guidelines for Assessment and Cleanup of Contaminated Sites
(Guidelines) dated January 2020, the DEQ DWM Vapor Intrusion Guidance (VI Guidance) dated
March 2018, and most recent versions of the U.S. Environmental Protection Agency (EPA) Region
IV Science and Ecosystem Support Division (SESD) Field Branches Quality System and Technical
Procedures guidance. Collection of Indoor Air Quality samples included several steps in preparing
for and completing the work.
• Work Plan preparation & approval by NCBRS for Select Locations
• Arrange for 6-liter [ Individually Certified ] TO-15 Cannisters with Pace Labs
• Inspect each sample location and document conditions with DEQ checklist
• Confirm the HVAC system use in each space - to be operated normally during sampling
• Indoor air samples were collected over an 8-hour time period using flow control devices
• A Duplicate indoor air sample will be collected concurrently with primary sample at
location in the women's restroom in the Boxcar (locations IA-3 and IA-3 Dup).
• C.O.C., packaging, and FeclEx shipment of air samples in lab packaging to Pace
• Evaluate analytical results relative to Non -Residential Worker Indoor Air VISLs
• A report of sampling, analytical data, and evaluation of data to be sent to NCBRS
The previous SSV/CS sampling evens 2021/2022 did not include indoor air samples, although
crawlspace samples are considered indoor air samples for comparison with established Non -
Residential Worker Indoor Air VISLs.
AZ Development / West Lewis Street Brownfields Site / IAQ Assessment Report Page 4
Pyramid Environmental & Engineering, PC-2023-009 11-03-2023

Pyramid Environmental & Engineering, PC PYRAMID
The IAQ sampling procedures included the following :
• Prior to sampling, Pyramid inspected the locations with the tenants and prepared
Indoor Air Building Survey and Sampling Forms for each space where indoor air samples
were planned to document conditions at the site.
• Several compounds that were potential interferences were located and removed from
the building by the tenant at least 48-hrs before the IAQ sampling.
• The schedule for IAQ sampling was planned to minimize potential interference from
construction, cleaning, or renovations in the space. The Indoor Air Survey and Sampling
Forms are presented in Appendix B.
• The HVAC system was operated normally before and during the sampling
• IAQ samples were collected using Individually Certified 6-liter Summa Cannisters
equipped with 8-hour flow controller devices.
• The air intake for each sample was elevated on a stand, at breathing height (— 5 feet)
above the floor at each location.
• All IAQ samples were collected on the main floor.
• Sampling work was scheduled with the building owners to limit public access to the
work areas while samples were being collected.
IAQ sample locations are shown on the maps
Figure 6 - Locations of IAQ Samples at 109 —111 W. Lewis St. (IA-4 and IA-5)
Figure 7 - Location of CS Sample at 117 B-1 W. Lewis St. (CS-1313)
Figure 8 - IAQ Samples & Duplicate at 120 W. Lewis St. (IA-1, IA-2, IA-3, and IA-3 Dup.)
3.2 Crawl Space Sampling
Since CS-13 showed a detection of PCE with a calculated HI of 2.2 for the 2021 data, the NCBRS
stated that mitigation for this area is needed. The resampling was suggested to confirm the
earlier concentration before planning for vapor mitigation. The sampling plan for this area
included a crawl space sample location designated CS-13B at the same location as the CS-13
sample collected in 2021. The CS sampling procedures include :
• Under 117 B-1 Lewis Street, the crawl space has a dirt floor and no moisture barrier.
• The ceiling of the crawl space is wooden joists and the wooden floor below the Pub.
• The CS air sample was collected over an 8-hour time period using a flow control device.
AZ Development / West Lewis Street Brownfields Site / IAQ Assessment Report Page S
Pyramid Environmental & Engineering, PC-2023-009 11-03-2023

Pyramid Environmental & Engineering, PC PYRAMID
• The crawl space has 3 foundation vents and a small access door on the western wall.
There is a steel air inlet located on the concrete porch to the south of the Pub that
allows air into the crawlspace.
• Crawlspace ventilation is provided by two exhaust fan units installed in the northwest
corner of the crawlspace, and the air inlet is located on the porch south of the pub.
• The crawlspace height varies from 30 inches to less than 10 inches. The crawlspace has
been dry each time we have entered the crawlspace to sample.
• There is a perimeter brick wall and foundation piers within the crawl space area.
Crawl space sampling was completed concurrently with the other IAQ sampling.
3.3 Duplicate Sampling
The IAQ primary sample and duplicate sample ( IA-3 and IA-3 Dup ) were collected concurrently
using a "Tee" connection provided by Pace Analytical. The intake valve on each canister was fully
opened to begin sample collection and vacuum readings were recorded before, during, and at
the end of the sample collection. Photos of the sample collection are presented in Appendix C.
The sample collection start and ending times were recorded for each sample on the container
label, sampling forms, and on the COC. Vacuum of between -5 and -8 inches of Hg vacuum was
maintained for each sample collected. The Field Sheets from the indoor air sampling are
presented in Appendix D.
3.4 TO-15 Laboratory Analyses
The analytical laboratory selected for the project is Pace Analytical Services and the air sample
analytical method selected is TO-15 for Volatile Organic Compounds (VOCs) with the full list of
compounds reported, excluding acrolein and assuring that naphthalene is included on the analyte
list. Pace Analytical Services prepared Individually Certified, 6-liter, summa cannisters with 8-
hour flow control devices for IAQ sample collection. The cylinders were inspected before use,
and were found to be in excellent condition for the sampling.
The sample collection methods used in the field were in accordance with the Laboratory
instructions. Personnel performing the IAQ sampling were qualified by education, training, and
experience. Sample start and end times were recorded on the field sample form, sample tag,
and Chain -of -Custody for each location. The starting and ending vacuum in each canister were
recorded on the field forms, sample tags, and chain -of -custody prior to sampled shipping to the
laboratory.
AZ Development / West Lewis Street Brownfields Site / IAQ Assessment Report Page 6
Pyramid Environmental & Engineering, PC-2023-009 11-03-2023

Pyramid Environmental & Engineering, PC PYRAMID
After each sample was collected, the intake valve was closed, and the tubing disconnected from
the canister. The starting and ending vacuum was recorded on the Chain -of -Custody form and
submitted to the laboratory with the canisters. The summa canisters were shipped by overnight
shipping to Pace Analytical Services using standard Chain -of -Custody procedures. The analytical
laboratory results are presented in Appendix E.
3.5 Quality Assurance / Quality Control Procedures
The work plan provides for collection of ( 6 ) primary vapor samples and ( 1 ) duplicate sample.
The location of the duplicate sample was chosen in the women's bathroom of the Boxcar to check
for potential migration from the sewer and plumbing connections. Pyramid added % gallon of city
water to each floor drain to fill up the "P" traps in the plumbing before collecting the air samples.
The primary sample (IA-3) and the duplicate sample (IA-3 Dup.) were collected using a Stainless
Steel "Tee" provided by the analytical laboratory to connect the two sample cannisters. These
two samples were collected concurrently for comparative analysis.
Pyramid reviewed the Laboratory Level II report from Pace Analytical for quality assurance. The
laboratory QA/QC procedures were conducted in accordance with the standard method protocols
and include regular equipment maintenance, equipment calibrations, and adherence to specific
sample custody and data management procedures. Samples were analyzed in conjunction with
appropriate blanks, lab duplicates, continued calibration standards, surrogate standards, and
matrix spike standards in accordance with approved methodologies to monitor both instrument
and analyst performance. Laboratory reporting limits for each analyte were at or below
appropriate screening criteria.
The 6-liter canisters were packaged and shipped to the laboratory under standard chain -of -
custody protocols for analysis of VOCs by EPA Method TO-15. The sample cylinders were checked
when received by Pace Analytical Services and inspected. The cylinders vacuum readings were
recorded by Pace and compared to the vacuum remaining at the end of the test. The cylinders
were analyzed using TO-15 Method for VOCs and naphthalene, and the results were checked for
accuracy. The NCBRS requested that the laboratory review the data and report values that are
above the Method Detection Limits (MDLs) and below the Reporting Limits (RLs) for TO-15 as "J"
flag for estimated concentrations. The TO-15 data were reviewed for comparative results
between the primary and duplicate samples to determine if the comparative results are
acceptable. The laboratory report of the IAQ air samples were compared with the NCBRS VISLs,
and the results are presented in this report.
AZ Development / West Lewis Street Brownfields Site / IAQ Assessment Report Page 7
Pyramid Environmental & Engineering, PC-2023-009 11-03-2023

Pyramid Environmental & Engineering, PC PYRAMID
QA data consistent with Level II documentation was requested forth is project and Pace Analytical
Services was the laboratory ( contact was Ms. Bonnie Vang [phone] ). The IAQ analytical
data were reviewed and compared to the Non -Residential Worker Indoor Air VISLs.
Analytical laboratory reports were reviewed and the data were provided to Sharon Eckard as soon
as received. The laboratory results are presented in Appendix E.
4.0 Indoor Air Quality Results
Results of the indoor air quality (IAQ) laboratory analyses are presented in the paragraphs below.
The NCBRS requested the use of the July 2023 DEQ Risk Calculator to evaluate the IAQ analytical
data which was completed. The results of the data evaluation was compared against the Non -
Residential Worker Indoor Air VISLs. The PACE analytical data are presented in Appendix E, and
the revised Risk Calculator results are presented with data tables are presented in Appendix F,
Appendix G, and Appendix H.
4.1 Indoor Air Samples at Transform GSO - 109 & 111 W. Lewis Street
The indoor air samples were collected near the locations previously sampled with vapor pins set
in a thick wooden floor The CS samples collected in 2021 are considered crawlspace samples.
The selected Indoor Air sample locations are shown on Figure 6. The Pace analytical results were
entered into the July 2023 DEQ Risk Calculator and the data and resulting risk summary for IA-4
and IA-5 are presented in Appendix F.
The DEQ Risk Calculator showed that the detected concentrations for IA-4 were below the Non -
Residential Worker Indoor Air VISLs based on the July 2023 DEQ Risk Calculator. For Sample IA-
4, the hazard index (HI) reported by the calculator was 0.41 which is less than one.
The DEQ Risk Calculator showed that the detected concentrations for IA-5 were below the Non -
Residential Worker Indoor Air VISLs based on the July 2023 DEQ Risk Calculator. For Sample IA-
5, the hazard index reported by the calculator was 0.91 which is less than one.
4.2 Crawlspace Sample CS-13B at the Pub - 117-B W. Lewis Street
The previous Crawlspace sample (CS-13) was collected in the area underneath the brew pub
over the dry soil floor of the space, at the location shown on Figure 7. Sample CS-13B was
AZ Development / West Lewis Street Brownfields Site / IAQ Assessment Report Page 8
Pyramid Environmental & Engineering, PC-2023-009 11-03-2023

Pyramid Environmental & Engineering, PC PYRAMID
collected over an 8-hour collection time and the analytical results from the analysis were
entered into the July 2023 DEQ Risk Calculator. The data table and resulting risk summary for
CS-13B are presented in Appendix G.
The CS results are considered indoor air quality for the DEQ Risk Calculator; therefore, the
analytical data were input as indoor air data. The July 2023 DEQ Risk Calculator showed that
the detected concentrations were above the Non -Residential Indoor Air VISLs for
Tetrachloroethylene (PCE). The DEQ Risk Calculator showed that for sample CS-13 B, the
hazard index was 3.3 for CS-13B which is higher than the previous sample collected in 2021
which showed a HI of 2.2. The 2023 concentration of PCE was higher than the 2021 results, and
was in the same order of magnitude, confirming the concentration. Risk Calculator output using the
most recent July 2023 calculator indicates a Non -Residential Worker Indoor Air VISLs were exceeded
for a second time at location CS-13.
4.3 Indoor Air Samples at Boxcar - 120 W. Lewis Street
Indoor air samples were collected in the Boxcar arcade and events center near the locations
previously sampled with vapor pins (SSV Samples in 2022), at the locations shown on Figure 8.
The Pace Analytical results for each location (IA-1, IA-2, IA-3, and IA-3 Dup.) were entered into
the July 2023 DEQ Risk Calculator and the data table and resulting risk summary for IA-1, IA-2, IA-
3, and IA-3 Dup. are presented in Appendix H.
The result of the July 2023 DEQ Risk Calculator evaluation showed that the detected
concentrations in indoor air samples IA-1, IA-2, IA-3, and IA-3 Dup., were below the Non -
Residential Worker Indoor Air VISLs.
For sample IA-1, IA-2, IA-3, and IA-3 Dup., the hazard index reported by the calculator was 0.39,
0.17, 0.15, and 0.19, respectively. These values are all less than 1 for the HI.
AZ Development / West Lewis Street Brownfields Site / IAQ Assessment Report Page 9
Pyramid Environmental & Engineering, PC-2023-009 11-03-2023

Pyramid Environmental & Engineering, PC PYRAMID
5.0 Conclusions
As requested by the NCBRS and AZ Development, in 2021/2022 Pyramid completed the Sub Slab
Vapor (SSV) assessment of the West Lewis Street Brownfield site. In September 2023, the Indoor
Air Sampling was completed to help bridge data gaps for Vapor Intrusion Assessment. The indoor
air quality sampling was completed and the results of the assessment are summarized below.
• Previous soil and groundwater assessment conducted at the Site detected low
concentrations of PCE and TCE in the groundwater. The presence of drycleaner
compounds such as PCE and TCE in the groundwater is consistent with the past use of
the property as a laundry and dry cleaning facility.
• Pyramid completed a receptor survey update for the area surrounding the Site, and no
sensitive receptors or water supply wells were located within 1,000 feet. Pyramid
confirmed the results of the previous receptor survey and provided additional
confirmation from the City or Greensboro that all surrounding properties within 1,000
feet of the site are connected to the municipal water supply.
• The research into nearby dry cleaner facilities indicated two nearby DSCA accepted sites.
The DCSA sites are Odorless Dry Cleaners located about 210 feet southwest of the site,
and Wades Dry Cleaners located 300 feet to the east.
• An Indoor Air Quality sampling plan was submitted for the site and included sample at
selected locations within the Transform GSO space, the crawlspace under the pub, and
within the Boxcar arcade and events center.
• In September 2023, the work was completed for the indoor air sampling.
• For transform GSO, the July 2023 DEQ Risk Calculator showed IA-4 and IA-5 were both
below the Non -Residential Worker Indoor Air VISLs, and the hazard index (HI) reported
by the calculator was 0.41 and 0.91, respectively.
• For the CS sample under the Pub ( 11713-1 W. Lewis Street), the July 2023 DEQ Risk
Calculator for sample CS-13B was above the Non -Residential Worker Indoor Air VISLs
and had a calculated hazard index of 3.3. Based on the earlier evaluation in 2021, the HI
was 2.2 in the same crawlspace location. NCBRS requires mitigation for this space which
will be planned and completed for this Site.
AZ Development / West Lewis Street Brownfields Site / IAQ Assessment Report Page 10
Pyramid Environmental & Engineering, PC-2023-009 11-03-2023

Pyramid Environmental & Engineering, PC PYRAMID
• For the Boxcar at 120 W. Lewis Street, the IAQ data were entered into the July 2023 DEQ
Risk Calculator for samples IA-1, IA-2, IA-3, and IA-3 Dup. The result of the RC evaluation
showed that the detected concentrations for samples IA-1, IA-2, IA-3, and IA-3 Dup.,
were below the Non -Residential Worker Indoor Air VISLs. For sample IA-1, IA-2, IA-3, and
IA-3 Dup., the hazard index reported by the calculator was 0.39, 0.17, 0.15, and 0.19,
respectively. These values are all re[ported HI values less than 1.
6.0 Recommendations
As requested by the NCBRS and AZ Development, Pyramid completed the Indoor Air Quality
sampling and evaluation for the West Lewis Street Site. The results of the July 2023 DEQ Risk
Calculator confirmed the following :
• Indoor air data collected in Transform GSO were below Non -Residential Indoor Air VISLs.
• The crawlspace sample beneath the brew Pub was evaluated using the July 2023 DEQ
risk calculator and the level of PCE was above the Non -Residential Worker Indoor Air
VISLs with a calculated hazard index was 3.3. This area will require mitigation in the
coming months as directed by NCBRS. Additional discussions and planning are needed
before implementation of any corrective measures.
• Indoor Air results from the Boxcar were below Non -Residential Indoor Air VISLs for the
Boxcar Arcade & Events Center.
7.0 Closing
This report is prepared for and made available solely for the use of AZ Development, LLC and the
NCBRS. The contents thereof may not be used or relied upon by any other person without the
express written consent and authorization of Pyramid Environmental & Engineering, PC. The
scope of services for this environmental report relies on documented environmental data
provided by others. The subsurface is inherently heterogeneous and subsurface heterogeneities
not identified in this limited study may influence COCs in unpredicted ways. Subsurface
conditions such as groundwater flow, groundwater elevations, and water quality will vary over
time. The opinions and conclusions in this report are in accordance with industry accepted
geologic and hydrogeologic practices used at the time and location where the report was
prepared. No warranty is expressed or implied. The observations, conclusions, and
recommendations documented in this report are based on site conditions and information
reviewed at the time of Pyramid's investigation. Pyramid Environmental appreciates the
opportunity to provide this environmental service.
AZ Development / West Lewis Street Brownfields Site / IAQ Assessment Report Page 11
Pyramid Environmental & Engineering, PC-2023-009 11-03-2023

Figures

51TE: F109/111, 11 7—B1, & 120 W. LEWIS ST. LOCATION: REENSBOR0, NORTH CAROLINA
Qy FAIRMONt Sr a �� o + �,•
S� •Gt71tFOAbAyE"2
I✓SfARXETS7-
-
"
µcGEE
m
�
y
Sr.
GAS
o
,,`•
a SPRING
r W GAY'.EGIi1' BtVO $RAGG ST '.�.
UNION ST � f fl
R SF
ST
y �
IwwrrFrrrcronr sT
t l f �DO.dk ST
❑ V _ r�
sr � � � Glei><wood _• ��
gg � � SafJTil Sr
'[t4A'S SrC~ - oCo
�
BLtrF0i4D Sr
�
T
]
E-PRI kDtY,�Er
m -Z _
-
_
r
S�
-
,t .siadNsr
�- •GORRELt
.-
ST -
+' - -
x .
NOCho. Park
1 d
TL15C,4tA05A S Ts 71b7 - N a . ;s
455 AVE �
220
LA.n-
USGS IDENTIFICATION SCALES
USGS 7.5 GREENSBORO, NC 1/2 0 1
MINUTE MAP
ORIGINAL DATE: NA MILES:
PHOTOREVISION 2019
DATE: 1000 0 2000 40DO 8000
PRIMARY HIGHWAY, HARD SURFACE FEET: 1• = 2000'
SECONDARY HIGHWAY. HARD SURFACE NOTES: ►TOPOGRAPHICAL CONTOUR INTERVAL 10 FEET
■ PHOTOREMS IONS DENOTED IN PURPLE
71 LIGHT -DUTY ROAD HARD OR
IMPROVEO SURFACE MAGNETIC COUNTY MM OF:
UNIMPROVED ROAD
NORTH NORTH CAROLINA
STATE ROAD
U.S. ROUTE F=:] COUNTY: G U I LF O R D
INTERSTATE ROUTE APPROXIMATE SITE LOCATION
A2 DEVELOPMENT . " + NOTES
" 1 a9 1 f 1, 117-81, 120 W. LEWIS 5T.�� �,,� mo
�.�w
PYRAMID If GREENSBORO 1m NORTH CAROLINA 7/28/21
TIE nAawK �
nr.p iwe na.E r�ec Tm srra nx�r110""
ENVIRONMENTAL& ENGINEERING, P.C. TOPOGRAPHIC MAP u5csrnPo

Guilford County, NC
J ,`r.
AP
V
pj120 BARNHARDT ST
i
'i
fMji
5eP0+4� 1 5116 51w8-S E ST -
520S,L�LM ST
� r 1 532 524 SE MST
>JI V.
533 526 S ELM SOIL Y-
120 W LEWIS ST 4 528 SfELM 5T_'L
- 535 �530 S ELM.ST
cop i1]
c c lL
N'
532 534 S ELM ST
Ts
'r
109 W LEWIS 5T
1
117 B1 W LEWIS ST
--
481621 'ELM'ST
May 5, 2021
I • A
I•
600 5 ELM 5T
1
3
606 S ELM ST-
UN ST
!
��
u4
fi10'S!ELM'ST
1:600
0 25 50 100 ft
0 5 10 20 m
Guilford County does not certify the authenticity or accuracy of such information. No warranties, express or implied, are provided for the records and/or mapping data herein, or for their use or interpretation by the User.

P7f�zF)WARINW-11 A
ArcGIS - DryCleaning Contaminated
DryCleaning Contaminated
North Carolina Dry -Cleaning Solvent Cleanup Act Program, Remediation Unit's site inventory 1
200ft
Maxar, Microsoft I Esri Community Maps Contributors, State of North Carolina DOT, © OpenStreetMap, Microsoft, Esri, HERE, Garmin, SafeGraph,
GeoTechnologies, Inc., METI/NASA, USGS, EPA, NPS, US Census Bureau, USDA
https://www.arcgis.com/home/webmap/print.html 1/1

r �
II'
r
;;;u5 , uul;-� (90.00)
120 "J'Ve ;t wis
46
MW y (89.50)
(90.18) L
T _
# (88.50
TM-3
Ll ;" LI (88.86) -
+ 76'i
I
r lullu�3 � 1
�• ICJ �
TMW-2
(88.22)
I F &� r 1
jr
F -
�I_ TMW-'
" MW-4 tFl
(88.23)
LEGEND (89.00) Potentiometric Contour Line
®Temporary Monitoring Well Location (88.86) Groundwater Elevation (Ft.)
Off -site Groundwater Monitoring Well
Interpreted Groundwater Flow Direction
FD — Floor Drain
FIGURE 3 — POTENTIOMETRIC CONTOUR MAP Source: Google Earth Scale: 1 Inch = 40 feet
N
9111 Monroe Road, Suite 175
Charlotte, North Carolina 28270 Site Name: 109 — 111 West Lewis Street
T 704.846.8853 F 704.846.3271
109 and 111 West Lewis Street
enviroassessments.com Greensboro, North Carolina
enviroassessments EA Project Number: 14-9927.2

Guilford County, NC
J ,`r.
AP
V
pj120 BARNHARDT ST
i
'i
fMji
5eP0+4� 1 5116 51w8-S E ST -
520S,L�LM ST
� r 1 532 524 SE MST
>JI V.
533 526 S ELM SOIL Y-
120 W LEWIS ST 4 528 SfELM 5T_'L
- 535 �530 S ELM.ST
cop i1]
c c lL
N'
532 534 S ELM ST
Ts
'r
109 W LEWIS 5T
1
117 B1 W LEWIS ST
--
481621 'ELM'ST
May 5, 2021
I • A
I•
600 5 ELM 5T
1
3
606 S ELM ST-
UN ST
!
��
u4
fi10'S!ELM'ST
1:600
0 25 50 100 ft
0 5 10 20 m
Guilford County does not certify the authenticity or accuracy of such information. No warranties, express or implied, are provided for the records and/or mapping data herein, or for their use or interpretation by the User.

14`

Tables

The following table presents brief history of the Brownfields Site assessment for the two sites.
Table 1
Chronology of Assessment : Model Linen & W. Lewis Street Sites
Date
Description of Activity
Decisions Made
In September 1996, the former 5,000-gallon heating oil UST was removed from the
1996
courtyard in the NE corner of the Model Linen Site. The site map and analytical
UST Pull
results table are presented in Appendix B. TPH analyses from T-1 and T-2 showed
DRO max 1,120 mg/kg
elevated levels of GRO and DRO in soil under the tank. Depth to water was
More Assessment
approximately 9 feet, and additional assessment was indicated.
is Indicated
2003
Soil and Groundwater assessment were completed for the site and identified
petroleum contamination in both soil and groundwater above the residential
Chlorinated Solvents
MSCCs. In addition, several chlorinated compounds were identified in the
identified in GW
groundwater at location MW-1 at concentrations > the NCAC 2L Standards.
including PCE
2004
Additional Groundwater assessment completed with installation of MW-2, MW-3,
and MW-4 at the Model Linen Site. These wells were sampled, and groundwater
Groundwater
concentrations detected PCE in ( MW-1= 2.7 ug/L ), ( MW-2 = ND), ( MW-3 = 18
PCE Confirmed
ug/L ), and (MW-4 deeper = 4.8 ug/L ). In addition, TCE and Vinyl Chloride were
detected in MW-1 above the NCAC 2L Standards.
2014
The Model Linen Site is accepted into the Brownfields Program and
redevelopment is started.
Oct 2014
NCBP approval of the Brownfields Program eligibility for West Lewis Street site and
expansion parcels. This work was preceded by Phase I And Phase II Assessments
NCDEQ Accepted
and these data were used in the eligibility application. The Brownfields site was
West Lewis St. Into
Re -developed starting in 2014. In August 2014, temporary MWs were installed and
Brownfields Program
sample at the West Lewis site and showed petroleum compounds detected in
TMW-1 and TWM-4, and PCE and TCE detected in MW-3 at concentrations > 2L.
Aug 2016
Former Odorless Dry Cleaners site is investigated and PCE is detected in 13 of 20
DSCA Site
sample soil -gas locations. Dec 2016 groundwater impacts are found at the site,
Acceptance for
and Odorless is accepted as a DSCA site ( DC-410047 ). The location is
Odorless DC
topographically lower than Lewis Street, and is 250 feet SW of the site.
March 2017
March 2017, PCE detected at former Wades Dry Cleaners in soil and groundwater.
DSCA Site
April 2017 site accepted in the DSCA program ( DC-410052 ) and is approximately
Acceptance for
300 feet east of the Lewis Street Site and is topographically downhill of the Lewis
Wades DC
Street and Model Linen Brownfields Sites.
2021- 2022
Additional assessment is completed for the Model Linen and West Lewis Street
Brownfields sites to address the data gap of Sub -Slab vapor assessment. This
SSV Sampling at both
report presents the results of the sampling and analytical results for the site.
Brownfields Sites
Based on the March 15, 2022 Report of SSV & CS analytical data the NCDEQ required additional
assessment of Indoor Air Quality (IAQ) for selected locations at both Brownfields Sites.

The sampling strategy for each location is explained in the table below, with the foundation type
and sample method described.
Table 2
Address - Building Size & Foundation Descriptions
SCOPE of
During Work Plan review and discussions, the NCDEQ requested more SSV/CS locations for the SSV Study.
WORK
The NCDEQ general guidance refers to one sample per 1,000 square feet. Pyramid discussed locations
with the DEQ and the agreed upon SSV sample locations are presented on Figure 5.
The 109 W. Lewis pub is 2,697 square feet of renovated space, constructed in a foundation wall with post
109 W.
and beam construction. The current floor is a thick wooden plank floor which was built using joists, a
Lewis
plywood deck, and then the 3.5 inch thick wooden plank floor. The wooden floor was constructed over a
former concrete floor, and therefore will be considered as crawlspace samples. The DEQ requested ( 2 )
samples which are considered crawlspace samples (CS-1 and CS-2) which are shown on Figure 6.
This area is 5,828 square feet of office space, constructed inside a foundation wall with post & beam. The
111 W.
current floor is a thick wooden floor which was built using joists, a plywood deck, and then the 3.5 inch
Lewis
thick wooden plank floor. The wooden floor was constructed over a former concrete floor and therefore
will be considered crawlspace samples. For this area, the (4 ) crawlspace vapor samples will be collected
(CS-3, CS-4, CS-5, and CS-6) at the locations shown on Figure 6.
115 W.
This area is currently the Fainting Goat Distillery which has a new concrete floor. The distillery is separated
Lewis
by a concrete block wall from the brewery to the west. The distillery is 3,666 sq. ft., and is the eastern half
Distillery
of the area the Sanborn Map indicated as "Dry Cleaner". The DEQ requires (2) SSV samples (SSV-7 and
SSV-8) as shown on Figure 7. It is possible that the new concrete slab may have been poured over the
older slab in this area; a crawlspace is not expected.
117 W.
This area is currently the South End Brewery which also has a new concrete floor. The brewery is the
Lewis
western % of the building, and is separated from the distillery to the east by a concrete block wall. The
Brewery
brewery is 3,564 sq. ft. of the building, and is the west half of the area the Sanborn Map indicated as "Dry
Cleaner'. The DEQ requires (3) SSV samples (SSV-9, SSV-10, & SSV-11) as shown on Figure 7.
117 B-1
The entire pub (3,737 sq. ft.) is constructed over a crawlspace area below the wooden floor. The DEQ
Crawlspace
requested (2) crawlspace samples (CS-12 and CS-13) as shown on Figure 8. The samples will be collected
at least 10 feet from the exterior walls and will be compared with the IASLs.
Northern
This area was in the middle of a renovation to be used as an events center and bar. The area was cleared,
120 Lewis
and the concrete floor was exposed for sampling. The area is slab -on grade construction with an outside
Events
paved courtyard in the NE corner. The northern part had ( 4 ) proposed SSV samples (SSV-14 through
Areas
SSV-16) to evaluate the area ( see Figure 9). The small "Courtyard" in the NE corner of the property will
be investigated with SSV-15.
Southern
The Boxcar has an event space, 2 bars, and a game room covering about 70 % of the total area. The
120 Lewis
building is slab on grade with plumbing entering on the east side. The SSV points (SSV-18 through SSV-
BOXCAR
23) are shown on Figure 9, and cover the Boxcar area of 9,900 square feet with ( 6 ) SSV samples to
evaluate this area.
The SSV locations are shown on Figure 5 and described on the table below.

Attachment A

Sent Via Email :
June 15, 2023
North Carolina Department of Environmental Quality
Division of Waste Management — Brownfields Program
1646 Mail Service Center
Raleigh, NC 27699-1646
Attn: Ms. Sharon Poissant Eckard, PG
Email: [e-mail]
PYRAMID
ENVIRONMENTAL B ENGINEERING, P.C.
Re: Indoor Air / Crawlspace Sampling — Work Plan Addendum
Model Linen & West Lewis Street Brownfields Sites
109, 111, 115, 117, 117-B, and 120 W. Lewis Street, Greensboro, NC
Pyramid Project # 2022-147
Dear Ms. Eckard,
On behalf of A.Z. Development LLC, in early 2022, Pyramid Environmental & Engineering, PC
(Pyramid) completed sub -slab vapor (SSV) and crawlspace (CS) sampling for the referenced
Brownfields properties. The work plan was approved in November 2021, and the work completed
after access issues were resolved. The SSV and CS sampling was completed to fill a data gap for
the Brownfields Program. After evaluation of the SSV and CS data, indoor air sampling was
indicated and requested by the NCDEQ. The scope of work is included in this correspondence.
1.0 Indoor Air SamDline Locations
Based on the SSV and CS sample results from the properties, the NCDEQ Brownfields Program
reviewed the analytical data, evaluated the risk using the NCDEQ Risk Calculator, and requested
indoor air quality sampling. Review of the data indicated that the non-residential Vapor
Intrusion Screening Levels (VISLs) were not exceeded; however, there were concerns. The
NCDEQ requested additional work to collect indoor air quality samples for the buildings at the
properties where contaminants of concern were detected below the concrete and wooden
flooring systems. Pyramid discussed the Indoor Air Quality (IAQ) sample locations with the
NCDEQ, and the selected locations are shown on the figures presented in Attachment A.
The proposed assessment activities will be performed in accordance with DEQ's Inactive
Hazardous Sites Branch (IHSB) Guidelines for Assessment and Cleanup of Contaminated Sites
Former Model Linen & West Lewis Street NCBP Sites — Indoor Air Sampling Work Plan Page 1
Pyramid Environmental & Engineering, PC-2022-147 06-15-2023

(Guidelines) dated January 2020, the DEQ DWM Vapor Intrusion Guidance (VI Guidance) dated
March 2018, and most recent versions of the U.S. Environmental Protection Agency (EPA)
Region IV Science and Ecosystem Support Division (SESD) Field Branches Quality System and
Technical Procedures guidance. Collection of Indoor Air Quality samples will include several
steps in preparing for and completing the work.
• Work Plan preparation & approval by NCDEQ Brownfields Program — Select Locations
• Arrange for 6-liter [ Individually Certified ] TO-15 Cannisters with Pace Labs
• Inspect each location prior to sampling and Document findings with DEQ Checklist
• Confirm the HVAC system use in each space - to be operated normally during sampling
• Indoor air samples will be collected over an 8-hour time period using flow control devices
• A Duplicate indoor air sample will be collected concurrently with primary sample
• Packaging and FeclEx shipment of air samples in lab packaging to Pace
• Evaluation of laboratory results relative to commercial and residential VISLs
• A report of sampling, analytical data, and evaluation of data will be sent to the NCDEQ
These general steps will be further explained in the following sections.
2.0 Indoor Air Sampling
The initial sampling in 2022 did not include indoor air samples. The crawl space samples collected
were considered indoor air samples for comparison with the appropriate VISLs. This work plan
addendum lists the locations and procedures for the planned IAQ sample collection.
• Prior to sampling, Pyramid will prepare the Indoor Air Building Survey and Sampling Form
for each space where indoor air samples will be collected, and document the findings
• If compounds that are potential interference compounds are found in the building
survey, these compounds will be removed at least 48 hours before the sampling day
• The schedule for IAQ sampling will be planned to minimize potential interference from
construction or renovations which may bring in new materials
• The HVAC system will be operated normally before and during the sampling
• IAQ samples will be collected with individually certified 6-liter Summa Cannisters
equipped with 8-hour flow controller devices
• The air intake will be elevated on a stand, at breathing height (— 5 feet) above the floor
• All IAQ Samples will be collected on the ground floor in building work or public areas
• The work will be scheduled with the building owners to limit the access of other people
to the work areas while sampling.
The IAQ sample locations are shown on the maps presented in Attachment A.
Former Model Linen & West Lewis Street NCBP Sites — Indoor Air Sampling Work Plan Page 2
Pyramid Environmental & Engineering, PC-2022-147 06-15-2023

3.0 Crawl Space Sampling
Since CS-13 showed a detection of PCE of concern, this location will be re -sampled during the
proposed IAQ sampling event. The resampling will be used to confirm the earlier concentration
before planning for vapor mitigation proceeds. The sampling plan for this area includes (1) crawl
space sample location designated CS-1313. Sampling procedures will include :
• Under 117 B-1 Lewis Street, the crawl space has a dirt floor and no moisture barrier
• The ceiling of the crawl space is wooden joists and a wooden floor below a Pub
• CS air samples will be collected over an 8-hour time period using flow control devices
• The crawl space has 4 foundation vents and a small access door on the western wall
• Crawl space height varying from 30 inches to less than 10 inches for CS-1313.
• There is a perimeter concrete wall and foundation piers within the crawl space area
Crawl space sampling will be scheduled after work plan approval and will be completed with the
IAQ sampling.
4.0 Duplicate Sampling
For this site, the primary sample and duplicate sample ( IA-3 and IA-31D ) will be collected
concurrently using a "Tee" connection provided by Pace Analytical. The intake valve on each
canister will be fully opened to begin sample collection. Vacuum readings will be recorded
before, during, and at the end of the sample collection. The sample collection start and ending
times will also be recorded on the container label and COC. Vacuum of between -5 and -7
inches of Hg vacuum will be maintained at the end of the sample collection.
5.0 Laboratory Analyses
After each sample is collected, the intake valve will be closed, and the tubing disconnected from
the canister. The starting and ending vacuum will be recorded on the Chain -of -Custody form and
submitted to the laboratory with the canisters. The summa canisters will be shipped in the lab
provided shipping containers under standards COC protocols to Pace Analytical Services. The
sample location will be documented on the sample location map, and conditions during the
sampling will be documented on the sampling forms.
The analytical laboratory selected for the project is Pace Analytical Services. The air sample
analytical method selected is TO-15 for Volatile Organic Compounds (VOCs) with the full list of
Former Model Linen & West Lewis Street NCBP Sites — Indoor Air Sampling Work Plan Page 3
Pyramid Environmental & Engineering, PC-2022-147 06-15-2023

compounds reported, excluding acrolein and assuring that Naphthalene is included on the
analyte list. The TO-15 analyses will be the same as the prior SSV and CS sample analyses. Pyramid
reviewed the method Reporting Limits (RLs) and method detection limits (MDLs) for TO-15 for
the target parameters/COCs. The RLS are within the range required to determine the VISLs for
each of the target parameters. The detection and reporting limits were well below the residential
and non-residential regulatory VISL levels. The analytical method TO-15 RLs for the method are
presented in Attachment B.
Pace Analytical Services will prepare the Individually Certified, 6-liter, summa cannisters with 200
ml/min flow control devices. The cylinders will be inspected before use, and if the vacuum prior
to sampling is 10% lower than the vacuum documented by the laboratory upon shipment, then
the cannister is considered compromised and will not be used. The sample collection methods
used in the field will comply with the instructions given by the analytical laboratory. The
personnel performing the IAQ sampling and collecting data are qualified by education, training,
and experience. The sample start and end time will be recorded on the sample tag and Chain -of -
Custody for the site. The starting and ending vacuum in each canister will be recorded on the
sample tag and chain -of -custody and submitted to the laboratory along with the samples.
6.0 Quality Assurance / Quality Control Procedures
The work plan provides for collection of ( 6 ) primary vapor samples and ( 1 ) duplicate sample.
The location of the duplicate sample was chosen in the women's bathroom of the Boxcar to check
for potential migration from the sewer and plumbing connections. The primary (IA-3) and
duplicate samples (IA-31D) will be collected using a Stainless Steel "Tee" provided by the analytical
laboratory to connect the two sample cannisters. These two samples will be collected
concurrently and the analyses will be used for comparative analysis.
Pyramid will review the Laboratory Level II report from Pace Analytical for quality assurance. The
laboratory QA/QC procedures will be used to ensure appropriate sample handling and analysis
and help with the review of the analytical data and data validation. QA/QC Procedures will be
conducted in accordance with the method protocols and will include regular equipment
maintenance, equipment calibrations, and adherence to specific sample custody and data
management procedures. Samples will be analyzed in conjunction with appropriate blanks, lab
duplicates, continued calibration standards, surrogate standards, and matrix spike standards in
accordance with approved methodologies to monitor both instrument and analyst performance.
Former Model Linen & West Lewis Street NCBP Sites — Indoor Air Sampling Work Plan Page 4
Pyramid Environmental & Engineering, PC-2022-147 06-15-2023

Laboratory reporting limits for each analyte will be at or below appropriate screening criteria,
where possible.
The Summa canisters will be packaged and shipped to the laboratory under standard chain of
custody protocols for analysis of VOCs by EPA Method TO-15. The sample cylinders will be
checked when received by Pace Analytical Services and inspected. The cylinders vacuum readings
will be recorded by Pace and compared to the vacuum remaining at the end of the test. The
cylinders will be analyzed using TO-15 Method for VOCs and naphthalene, and the results will be
checked for accuracy.
The NC Brownfields Program requests that the laboratory review the data and report values that
are above the Method Detection Limits (MDLs) and below the Reporting Limits (RLs) for TO-15 as
"J" flag for estimated concentrations. The TO-15 data will be reviewed for comparative results
between the primary and duplicate samples to determine if the comparative results are
acceptable. The laboratory report of the IAQ air samples will be compared with the IHSB VISL
standards, and the results presented in the report with QA/QC results, and chain -of -custody
documentation.
QA data consistent with Level II documentation will be requested for this project. Pace Analytical
Services was selected for the site and the laboratory contact is Ms. Bonnie Vang [phone].
The IAQ analytical data will be reviewed and compared to the Residential and Non -Residential
Vapor indoor air screening levels. The laboratory report will be reviewed and provided to Sharon
Eckard in advance of the signed and sealed consultant report. A final report will be prepared with
the data and submitted for DEQ review within 30 days of data receipt from the laboratory.
7.0 Reporting
Following completion of the assessment activities and receipt of the analytical data, Pyramid will
prepare a report documenting the vapor sampling activities, figures showing sample locations,
laboratory data and QA/QC, a discussion of the data in comparison to regulatory screening levels,
and conclusions and recommendations based on the site history. The report will include
applicable tables, figures, and appendices. Analytical data will be compared against the
applicable NCDEQ screening levels. Figures will include a north arrow, graphic scale, map legend,
and other reference information. The report will include the Pyramid Corporate license
information and the individual license information, and appropriate professional seal. The final
Former Model Linen & West Lewis Street NCBP Sites — Indoor Air Sampling Work Plan Page 5
Pyramid Environmental & Engineering, PC-2022-147 06-15-2023

report will be submitted to the NC Brownfields Project Manager for review and approval, and for
use in evaluating vapor intrusion risk and developing a revised Brownfields agreement.
8.0 Work Plan Closing
The schedule for the work will be set after IAQ Work Plan approval. The initial site inspection to
finalize the sample locations and fill out the Indoor Air Building Survey and Sampling Forms.
Preparations for the sampling event will be made and the work will commence when the
individually certified 6-liter Cannisters are available. The fieldwork is expected to be completed
in one field workday, and the samples will be shipped the following day.
Please review this work plan and send any comments, which will be addressed quickly so that we
can move forward. If you have any questions or if you need additional information, please call
me at [phone] or send an Email to [e-mail].
Sincerely,
Pyramid Environmental & Engineering, P.C.
Michael G. Jones, LG # , RSM
Operations Manager
Email Copy: Andy Zimmerman @ [e-mail]
George House @ [e-mail]
Former Model Linen & West Lewis Street NCBP Sites — Indoor Air Sampling Work Plan Page 6
Pyramid Environmental & Engineering, PC-2022-147 06-15-2023

Attachment A

14`

Attachment 6

aceAnalytical-
Pace Analytical Services, LLC
Method Detection Limits and Reporting Limits
by EPA TO15
LCS DUP
Analyte
CAS #
MDL (ppbv)
PRL (ppbv)
MW
MDL (ug/m3)
PRL (ug/m3)
Lower
Upper
RPD
1,1,1-Trichloroethane
71-55-6
0.0335
0.2
133.4047
0.186
1.11
70
130
25
1,1,2,2-Tetrachloroethane
79-34-5
0.0533
0.2
167.8498
0.372
1.40
70
132
25
1,1,2-Trichloroethane
79-00-5
0.0354
0.1
133.4047
0.197
0.555
70
134
25
1,1,2-Trichlorotrifluoroethane
76-13-1
0.0371
0.2
187.3762
0.289
1.56
70
130
25
1,1-Dichloroethane
75-34-3
0.0401
0.2
98.9596
0.165
0.823
70
133
25
1,1-Dichloroethene
75-35-4
0.0342
0.2
96.9438
0.138
0.806
70
130
25
1,2,4-Trichlorobenzene
120-82-1
0.647
1
181.4487
4.88
7.54
69
132
25
1 2 4-Trimethyl benzene
95-63-6
0.0708
0.2
120.1938
0.354
0.999
70
142
25
1,2-Dibromoethane
106-93-4
0.0384
0.1
187.8616
0.300
0.781
70
138
25
1,2-Dichlorobenzene
95-50-1
0.0663
0.5
147.0036
0.405
3.06
70
146
25
1,2-Dichloroethane
107-06-2
0.0473
0.2
98.9596
0.194
0.823
70
132
25
1,2-Dichloropropane
78-87-5
0.0572
0.2
112.9864
0.269
0.939
70
134
25
1,3,5-Trimethylbenzene
108-67-8
0.0580
0.2
120.1938
0.290
0.999
70
143
25
1,3-Butadiene
106-99-0
0.0532
0.2
54.0914
0.120
0.450
70
136
25
1,3-Dichlorobenzene
541-73-1
0.0833
0.5
147.0036
0.509
3.06
70
145
25
1,4-Dichlorobenzene
106-46-7
0.144
0.5
147.0036
0.877
3.06
70
140
25
2-Butanone (MEK)
78-93-3
0.155
1
72.1057
0.465
3.00
50
139
25
2-Hexanone
591-78-6
0.106
1
100.1589
0.442
4.16
70
148
25
2-Propanol
67-63-0
0.204
1
60.1
0.509
2.50
67
135
25
4-Ethyltoluene
622-96-8
0.0945
0.5
120.1938
0.472
2.50
70
145
25
4-Methyl-2-pentanone (MIBK)
108-10-1
0.0772
1
100.1602
0.321
4.16
70
139
25
Acetone
67-64-1
0.749
2.5
58.0798
1.81
6.04
64
130
25
Benzene
71-43-2
0.0350
0.1
78.1134
0.114
0.325
70
131
25
Benzyl Chloride
100-44-7
0.169
0.5
126.58
0.890
2.63
70
130
25
Bromodichloromethane
75-27-4
0.0348
0.2
163.8289
0.237
1.36
70
133
25
Bromoform
75-25-2
0.155
0.5
252.7309
1.62
5.25
70
137
25
Bromomethane
74-83-9
0.0379
0.2
94.9387
0.150
0.789
64
134
25
Carbon Disulfide
75-15-0
0.0409
0.2
76.131
0.129
0.633
70
131
25
Carbon tetrachloride
56-23-5
0.0438
0.2
153.823
0.280
1.28
70
131
25
Chlorobenzene
108-90-7
0.0331
0.2
112.5585
0.155
0.936
70
130
25
Chloroethane
75-00-3
0.0835
0.2
64.5145
0.224
0.536
69
141
25
Pace Analytical Services, LLC 612-607-1700
KL 4/20/21 1700 Elm Street SE, Suite 200 Minneapolis, MN 55414 www.pacelabs.com

aceAnalXical-
Pace Analytical Services, LLC
Method Detection Limits and Reporting Limits
by EPA TO15
LCS DUP
Analyte
CAS #
PRL (ppbv)
MW
MDL (ug/m3)
PRL (ug/m3)
Lower
Upper
RPD
Chloroform
67-66-3
0.0369
0.1
119.3779
0.183
0.496
70
130
25
Chloromethane
74-87-3
0.0405
0.2
50.4877
0.0851
0.420
70
130
25
cis-1,2-Dichloroethene
156-59-2
0.0484
0.2
96.9438
0.195
0.806
70
137
25
cis-1,3-Dichloropropene
10061-01-5
0.0552
0.5
110.9706
0.255
2.31
70
144
25
Cyclohexane
110-82-7
0.0631
0.5
84.1608
0.221
1.75
70
137
25
Dibromochloromethane
124-48-1
0.0595
0.2
208.2799
0.515
1.73
70
132
25
Dichlorodifluoromethane
75-71-8
0.0373
0.2
120.9138
0.188
1.01
70
130
25
Dichlorotetrafluoroethane
76-14-2
0.0285
0.2
170.9216
0.202
1.42
70
130
25
Ethanol
64-17-5
0.309
1
46.07
0.592
1.92
63
133
25
Ethyl Acetate
141-78-6
0.0357
0.2
88.106
0.131
0.733
70
136
25
Ethyl Benzene
100-41-4
0.0699
0.2
106.167
0.309
0.883
70
142
25
Hexachlorobutadiene
87-68-3
0.114
0.5
260.762
1.23
5.42
70
135
25
m&p-Xylene
106-42-3
0.145
0.4
106.167
0.642
1.77
70
141
25
Methyl Tert Butyl Ether
1634-04-4
0.0344
1
88.1492
0.126
3.66
70
143
25
Methylene chloride
75-09-2
0.168
1
84.9328
0.593
3.53
70
130
25
Naphthalene
91-20-3
0.407
0.5
128.1732
2.17
2.66
67
132
25
n-Heptane
142-82-5
0.0433
0.2
100.2034
0.181
0.833
70
137
25
n-Hexane
110-54-3
0.0534
0.2
86.1766
0.191
0.716
70
135
25
o-Xylene
95-47-6
0.0613
0.2
106.167
0.271
0.883
70
141
25
Propylene
115-07-1
0.0741
0.5
42.0804
0.130
0.875
70
130
25
Styrene
100-42-5
0.0890
0.2
104.1512
0.385
0.866
70
142
25
Tetra chIoroethene
127-18-4
0.0424
0.1
165.834
0.292
0.689
70
130
25
Tetrahydrofuran
109-99-9
0.0600
0.2
72.1066
0.180
0.600
70
136
25
Toluene
108-88-3
0.0637
0.2
92.1402
0.244
0.766
70
138
25
trans-1,2-dichloroethene
156-60-5
0.0418
0.2
96.9438
0.168
0.806
70
130
25
trans-1,3-Dichloropropene
10061-02-6
0.118
0.5
110.9706
0.544
2.31
70
145
25
Trichloroethene
79-01-6
0.0360
0.1
131.3889
0.196
0.546
70
130
25
Trichlorofluoromethane
75-69-4
0.0408
0.2
137.3684
0.233
1.14
69
135
25
Vinyl Acetate
108-05-4
0.0582
0.2
86.0902
0.208
0.716
70
146
25
Vinyl chloride
75-01-4
0.0334
0.1
62.4987
0.0868
0.260
70
137
25
Pace Analytical Services, LLC 612-607-1700
KL 4/20/21 1700 Elm Street SE, Suite 200 Minneapolis, MN 55414 www.pacelabs.com

aceAna1ytica1
Pace Analytical Services, LLC
Method Detection Limits and Reporting Limits
by EPA TO15
EXTRA ANALYTES (available upon request at an additional cost)
LCS DUP
Analyte
CAS #
MDL (ppbv)
PRL (ppbv)
MW
MDL (ug/rn)
PRL (ug/m3)
Lower
Upper
RPD
1,2-Dichloroethene (Total)
540-59-0
0.0484
0.4
96.9438
0.195
1.61
70
130
25
1,2,3-Trimethyl benzene
526-73-8
0.0584
0.2
120.19
0.292
0.999
70
130
25
1,4-Dioxane
123-91-1
0.205
2
88.1051
0.750
7.33
70
130
25
2,2,4-Trimethylpentane
540-84-1
0.0314
0.5
114.22
0.149
2.37
70
130
25
Acrolein
107-02-8
0.280
1.5
56.06
0.653
3.50
70
130
25
Acrylonitrile
107-13-1
0.203
0.5
53.06
0.449
1.10
70
130
25
Allyl Chloride
107-05-1
0.113
0.5
76.525
0.360
1.59
70
130
25
Chlorodifluoromethane
75-45-6
0.0733
0.5
86.47
0.264
1.80
70
130
25
Di -isopropyl Ether
108-20-3
0.0315
1
102.1748
0.134
4.25
70
130
25
Ethyl Tert-Butyl Ether
637-92-3
0.0347
1
102.1748
0.147
4.25
70
130
25
Isopentane
78-78-4
0.0542
0.5
72.15
0.163
1.50
70
130
25
Isopropyl benzene
98-82-8
0.0778
0.5
120.194
0.389
2.50
70
130
25
Methyl Methacrylate
80-62-6
0.0594
0.2
100.12
0.247
0.832
70
130
25
Methylcyclohexane
108-87-2
0.0995
0.5
98.186
0.406
2.04
70
130
25
N-Butylbenzene
104-51-8
0.123
0.5
134.2206
0.686
2.79
70
130
25
N-Propylbenzene
103-65-1
0.0729
0.5
120.1938
0.364
2.50
70
130
25
p-Isopropyltoluene
99-87-6
0.114
0.5
134.22
0.638
2.79
70
130
25
Sec- Butylbenzene
135-98-8
0.0966
0.5
134.2206
0.539
2.79
70
130
25
Tert Amyl Methyl Ether
994-05-8
0.0568
1
102.1748
0.241
4.25
70
130
25
Tert Butyl Alcohol (TBA)
75-65-0
0.0482
1
74.12
0.149
3.08
70
130
25
Tert-Butyl Benzene
98-06-6
0.0627
0.2
134.22
0.350
1.12
70
130
25
Vinyl Bromide
593-60-2
0.0556
0.2
106.95
0.247
0.889
70
130
25
THC as Gas (C4-C12)
24.3
48.6
106
211
70
130
25
Xylene (Total)
1330-20-7
0.145
0.6
106.17
0.642
2.65
70
130
25
Surrogates
1,4-Dichlorobenzene-d4 (S)
3855-82-1
70
130
Hexane-d14 (S)
21666-38-6
70
130
Toluene-d8 (S)
2037-26-5
70
130
Highlighted cells are calculated results
Pace Analytical Services, LLC 612-607-1700
KL 4/20/21 1700 Elm Street SE, Suite 200 Minneapolis, MN 55414 www.pacelabs.com

Attachment B

INDOOR AIR BUILDING SURVEY
and SAMPLING FORM
Site Name: S'vy✓' ID#: r41VILS �✓M
Preparer'sname: �V1`SGY�R
Preparer's affiliation: y
Part I - Occupants
&ED
Date: 04 - 257 - 2OZ j
Phone #:
Building Address: TyUvxf.6m S4. AD tj C_
Property Contact:1,M Wrie Renter /other:
Contact's Phone: home ( ) work ( ) cell ( )
# of Building occupants: Children under age 13 Children age 13-18 Adults
Part II - Building Characteristics
Building type: residential / multi -family residential office strip mall /commercial industrial
Describe building: f7f-_F 1 C WO k IBC 1;RV'V f1R? Year constructed: S
Sensitive population: day care / nursing home / hospital / school / other (specify): Nok_TG�
Number of floors below grade: _ _ (full basement / crawl space /slab on grade) V nA 1 N C>PtAD9
Number of floors at or above grade: I
Depth of basement below grade surface: ft. Basement size: N R` ft2
Basement floor construction: concrete / dirt / floating / stone / other (specify): N T
Foundation walls: poured concrete / cinder blocks / stone / other (specify) )?.RJ['
Basement sump present? Yes 10
Sump pump? Yes 16) Water in sump? Yes / No
Type of heating system (circle all that apply):
hot air ' tion hot air radiation wood steam radiation
heat pump hot water radiation kerosene heater electric baseboard
oth ecify):
Type of ventilation system circle all that apply):
ral . ' onditionin mechanical fans ha ventilation fans
individual air conditioning units itchen range hood fan outside air intake
other (specify):
Type of fuel utilized (circle all that apply):
Natural gas electric fuel oil / wood / coal / solar / kerosene
Are the basement walls or floor sealed with waterproof paint or epoxy coatings? Yes CN—O)

Is there a whole house fan? Yes ` l
Septic system? Yes / Yes (but not used) No
Irrigation/private well? Yes / Yes (but not used No
Type of ground cover outside of building: grass / ncret sphalt other (specify)
Existing subsurface depressurization (radon) system in place? Yes / active / passive
Sub -slab vapor/moisture barrier in place?
Type of barrier:
Part III - Outside Contaminant Sources
Yes t;156 )
Other stationary sources nearby (gas stations, emission stacks, etc.):
N'V
Heavy vehicular traffic nearby (or other mobile sources): -f—t _
Part IV Indoor Contaminant Sources
Identify all potential indoor sources found in the building (including attached garages) and crawlspace (if
present), the location of the source (floor and room), and whether the item was removed from the building
48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items
should be completed at least 24 hours prior to the commencement of the indoor air sampling event.
Potential Sources
Location(s)
Removed
(Yes 1 No NA)
Gasoline storage cans
019
Gas -powered equipment
Kerosene storage cans
Paints / thinners / strippers
t+1p
Cleaning solvents
Oven cleaners
N0
Carpet / upholstery cleaners
Other house cleaning products
Moth balls
C>
Polishes / waxes
PO
Insecticides
Furniture / floor polish
Nail polish / polish remover
T�
Hairspray
Cologne / perfume
0
Air fresheners
Fuel tank (inside building)
NA
Wood stove or fireplace
jV-Q
NA
New furniture / upholstery
New carpeting / flooring
NA
Hobbies - glues, paints, etc.
{�

Part V - Miscellaneous Items
Do any occupants of the building smoke? Yes No
Last time someone smoked in the building? r^cy, KS
How often? _—PA —
hours / days ago
Does the building have an attached garage directly connected to living space? Yes
If so, is a car usually parked in the garage? Yes No
Are gas -powered equipment or cans of gasoline/fuels stored in the garage? Yes /(S)
Do the occupants of the building have their clothes dry cleaned? Yes / No
If yes, how often? weekly / monthly / 3-4 times a year I LP K1, 0V-"0 �
Do any of the occupants use solvents in work? Yes /,
If yes, what types of solvents are used? �-1 J A
If yes, are their clothes washed at work? Yes 61
Have any pesticides/herbicides been applied around the building or in the yard? Yes ll�o
If so, when and which chemicals? � _ - _ _
Has there ever been a fire in the building? Yes No If yes, when? �-
Has painting or staining been done in the building in the last 6 months? Yes No
If yes, when f PO
Part VI - Sampling Information
and where? — KNA
Sample Technician: ,r i RM Y' I - _ Phone number: (536)
Sample Source: door Ai Crawlspace Air / Sub -Slab / Near Slab Soil Gas / Exterior Soil Gas
Sampler Type: Tedlar bag / Sorbent / Stainless Ste�Cani�ste/ Other (specify):
Analytical Method: 0-15 TO-17 / other: Cert. Laboratory:
Sample locations (floor, room):
Field ID 4 Field ID # r-
Field ID # 7M �'J 5 h Field ID #
Were "Instructions for Occupants" followed?AQ1/11VO
If not, describe modifications: (1 e-
P�

Provide Drawing of Sample Location(s) in Building
�11
W.
C? I-w'c
Part VII - Meteorological Conditions
Was there significant precipitation within 12 hours prior to (or during) the sampling event? Yes No
Describe the general weather conditions:
Part VIII — General Observations
Provide any information that may be pertinent to the sampling event and may assist in the data
interpretation process (e.g., observed that drycleaner operated with door or windows propped open for
ventilation).
(Adapted from the NJDEP Vapor Intrusion Guidance, October 2005)

FIGURE 3
Locations of IA Samples at
109-111 W. Lewis Street, Greensboro, NC
NC Brownfields SSV Sample Work Plan
Version 2.3

r
INDOOR AIR BUILDING SURVEY
and SAMPLING FORM
Site Name: • t' � ,��'ID#: viet,.) tow—__
Preparer's name: #IV% Date: a?L1.202--3
Preparer's affiliation: _ I` x Phone #: 5
Part I - Occupants " " J (�
Building Address: � '1' RCS ftt,bt/R�I 1 4.7- V, W• h�y "7 • , (�Ot PC,,
Property Contact: Owner / Renter / other:
Contact's Phone: home ( ) work ( ) cell ( )
# of Building occupants: Children under age 13 Children age 13-18 Adults
Part II — Building Characteristics
Building type: residential / multi -family residential / office / strip mall / commercial industrial
Describe building: � (911,� � �" p�t/V✓ Year constructed:
Sensitive population: day care / nursing home / hospital / school / other (specify): 0 Of
Number of floors below grade: _ (full basement / crawl space / slab on ad 16
Number of floors at or above grade: I
Depth of basement below grade surface: I'* ft. Basement size:z
Basement floor construction: concrete / dirt / floating / stone / other (specify):
PA -
Foundation walls: poured concrete / cinder blocks / stone / other (specify) e2 r
Basement sump present? Yes / lJ Sump pump? Yes / o Water in sump? Yes /
Type of heating system (circle all that apply):
hot air circulation hot air radiation wood steam radiation
eat pun hot water radiation kerosene heater electric baseboard
other (specify):
Type of ventilation system (circle all that apply):
cen a air condition mechanical fans athroom, ventilation f
individual air conditioning units kitchen range hood fan u si a air intake
other (specify):
Type of fuel utilized (circle all that apply):
Natural gas a ect ' fuel oil / wood / coal / solar / kerosene
Are the basement walls or floor sealed with waterproof paint or epoxy coatings? Yes No

Is there a whole house fan? Yes / No
Septic system? Yes / Yes (but not used) / 0
Irrigation/private well? Yes / Yes (but not used) No
Type of ground cover outside of building: / Crete�sp�halther (specify)
Existing subsurface depressurization (radon system in place? Yes No
Sub -slab vapor/moisture barrier in place? Yes
Type of barrier: (/
Part III - Outside Contaminant Sources
active /passive
Other stationary sources nearby (gas stations, emission stacks, etc.):Q
Heavy vehicular traffic nearby (or other mobile sources):
Part IV — Indoor Contaminant Sources
Identify all potential indoor sources found in the building (including attached garages) and crawlspace (if
present), the location of the source (floor and room), and whether the item was removed from the building
48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items
should be completed at least 24 hours prior to the commencement of the indoor air sampling event.
Potential Sources
Location(s)
Removed
(Yes / No / NA)
Gasoline storage cans
00
Gas -powered equipment
PC)
Kerosene storage cans
t4'o
Paints / thinners / strippers
0
Cleaning solvents
Oven cleaners
Carpet / upholstery cleaners
jJ�Q
Other house cleaning products
Moth balls
N p
Polishes / waxes
Insecticides
Furniture / floor polish
N
Nail polish / polish remover
Q
Hairspray
0
Cologne / perfume
No
Air fresheners
Fuel tank (inside building)
N0
NA
Wood stove or fireplace
NA
New furniture / upholstery
�1
New carpeting / flooring
NA
Hobbies - glues, paints, etc.

ri
Part V - Miscellaneous Items
Do any occupants of the building smoke? Yes No How often?
Last time someone smoked in the building? hours days ago
Does the building have an attached garage directly connected to living space? Yes No
If so, is a car usually parked in the garage? Yes 6�1
Are gas -powered equipment or cans of gasoline/fuels stored in the garage? Yes�o
Do the occupants of the building have their clothes dry cleaned? Yes
If yes, how often? weekly / monthly / 3-4 times a year
Do any of the occupants use solvents in work? Yes / 5
If yes, what types of solvents are used? -_N 4 �—
If yes, are their clothes washed at work? Yes /
1!9
Have any pesticides/herbicides been applied around the building or in the yard? Yes
If so, when and which chemicals? Bfi/(Y) (• !G!(� _
Has there ever been a fire in the building? Yes No If yes, when?
Has painting or staining been done in the building in the last 6 months? Yes
If yes, when N O and where? ►`I O
Part VI — Sampling Information
Sample Technician: 6 r) a, a - Phone number: qu-.�.) a - 3114
Sample Source: Indoor Air / Crawlspace Air / Sub -Slab / Near Slab Soil Gas / Exterior Soil Gas
Sampler Type: Tedlar bag / Sorbent / ainless Steel Canister Other (specify):
Analytical Metho : O-1 / TO-17 / other: Cert. Laboratory
Sample locations (floor, room):
Field ID #--13�p RLd ID #
Field ID # "V f(i + Ale- ti Field ID #
Were "Instructions for Occupants" followed? Yes No
'c
If not, describe modifications: )y j1 0CC �cpule
JO10

Provide Drawing of Sample Location(s) in Building
Part VII - Meteorological Conditions
Was there significant precipitation within 12 hours prior to (or during) the sampling event? Yes / No
Describe the general weather conditions:
Part VIII -- General Observations
Provide any information that may be pertinent to the sampling event and may assist in the data
interpretation process (e.g., observed that drycleaner operated with door or windows propped open for
ventilation).
(Adapted from the NJDEP Vapor Intrusion Guidance, October 2005)

M
Ch
U
E
to
U)
U)
U
'Z .99
o
U
Z
O
O
�p
cn
Y
a
v
E
N
M
M
N
U
i
j o
N
LL
3
O
v
0
?�
o
J
m
ei
V
co
Z
N

I
INDOOR AIR BUILDING SURVEY
and SAMPLING FORM 44"C401
Site Name: ui. Lewis 46d B~V 6MJ ID#:
Preparer's name: n 41' cs {� Date: 01 - 25 -,24923
Preparer's affiliation: Y yr► (1C Phone #: _ (a ' ?j - j 117
Part I - Occupants
Building Address: o (- I D-� W . .( a/ " !.(JI (� �d N
Property Contact: C Q. w S
Contact's Phone: home (ZI(p) ,il 0 — ` 5CVwork
r
Owner enter / other: _
-- cell
# of Buildin occupants: Children under age 13 Children age 13-18
JOCCA-A, Wes' Ci e•-+ kr-ck�&
Adults
Part II — Buildiniz Characteristics
Building type: residential / multi -family residential / office / strip mall commercia / industrial
Describe building: C gin r>• ewe& 8 vi } kew4* Year constructed: 1OW S
Sensitive population: day c:6e:
re / n sing home / hospital / school / other (specify).
Number of floors below grade _ (full basement / crawl space / s�abon�ae rY1�}1rJ �j.q�/Q
Number of floors at or above
Depth of basement below grade surface: N Ar ft. Basement size: M Pk ftz
Basement floor construction: concrete / dirt / floating / stone / other (specify): N A -
Foundation walls: poured concrete / / stone / other (specify) 13J.1 L*C
Basement sump present? Yes No Sump pump? Yes / No Water in sump? Yes No
Type of heating system (circle all that apply):
hot air circulation hot air radiation wood steam radiation
eat um hot water radiation kerosene heater electric baseboard
other (specify):
Type of ventilations stem (circle all that apply):
central air conditi�itio2n
mechanical fans athroom ventilation fans
individual air cong units ttchen ran e hood fan outst a air in a e
other (specify):
Type of fuel utilized (circle all that apply):
atural s t5p
fuel oil / wood / coal / solar / kerosene
Are the basement walls or floor sealed with waterproof paint or epoxy coatings? Yes No

Is there a whole house fan?
Septic system?
Irrigation/private well?
Yes / 0
Yes / Yes (but not used) / No
Yes / Yes (but not used) No
Type of ground cover outside of building: gras / concrete / pat other (specify) _
Existing subsurface depressurization (radon) system in place?
Sub -slab vapor/moisture barrier in place?
Type of barrier:
Part III - Outside Contaminant Sources
Yes No
Yes (. o active / passive
Other stationary sources nearby (gas stations, emission stacks, etc.): NO
Heavy vehicular traffic nearby (or other mobile sources): r-6,01t
Part IV — Indoor Contaminant Sources
Identify all potential indoor sources found in the building (including attached garages) and crawlspace (if
present), the location of the source (floor and room), and whether the item was removed from the building
48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items
should be completed at least 24 hours prior to the commencement of the indoor air sampling event.
Potential Sources
Location(s)
Removed
(Yes / No / NA)
Gasoline storage cans
�J
Gas -powered equipment
�—
Kerosene storage cans
Paints / thinners / strippers
+
Ll
Cleaning solvents
Oven cleaners
Carpet / upholstery cleaners
Other house cleaning products
Moth balls
p
Polishes / waxes
N O
Insecticides
' h C S
Furniture / floor polish
to -p
Nail polish / polish remover
T-40
Hairspray
140
Cologne / perfume
u IJ PLAA
Air fresheners
Fuel tank (inside building)
Q
NA
Wood stove or fireplace
NA
New furniture / upholstery
New carpeting / flooring
NA
Hobbies - glues, paints, etc.
W

1
Part V — Miscellaneous Items
Do any occupants of the building smoke? Yes No How often? amA
Last time someone smoked in the building? y4L� hours / days ago
Does the building have an attached garage directly connected to living space? Yes No
If so, is a car usually parked in the garage? Yes
Are gas -powered equipment or cans of gasoline/fuels stored in the garage? Yes No
Do the occupants of the building have their clothes dry cleaned? Yes / No /
If yes, how often? weekly / monthly / 3-4 times a year LtN K,�S(�►vU1'� /
Do any of the occupants use solvents in work? Yes /6
If yes, what types of solvents are used? J 0—
If yes, are their clothes washed at work? Y No
Have any pesticides/herbicides been applied around the building or in the yard? Yes
If so, when and which chemicals? A92
Has there ever been a fire in the building? Yes &
If yes, when?
Has painting or staining been done in the building in the last 6 months?
Ye / No
If yes, when -1'�W _ and where? kW_ l vr1GyZ�t�
Part VI — Sampling Information
Sample Technician: CKIIA11 " mrl Phone number: ( 3 (p) 3 3 - 4,
Sample Source: door A' / Crawlspace Air / Sub -Slab / Near Slab Soil Gas / Exterior Soil Gas
Sampler Type: Tedlar bag / Sorben / Stainless Steel Canister / Ot r (specify):
Analytical Metho : 0-15 / TO-17 / other: Cert. Laboratory:
Sample locations (floor, room):
Field ID # TA7- _ _ Gilftvi �
Field ID # 3 jq IjCC6
Ayub-
Were "Instructions for Occupants" followed?
If not, describe modifications: PO 0
& L i Vke
PA
Field ID # z�a-!✓►'��'+?®B�"?
Field ID #*U&—A/( / 1 eD VP
Yes /
wG�� _

Provide Drawing of Sample Location(s) in Building
. - p Vol
O ,Pr"
Part VII - Meteorological Conditions
Was there significant precipitation within 12 hours prior to (or during) the sampling event?
Describe the general weather conditions: -
Part VIII - General Observations
Yes / No
Provide any information that may be pertinent to the sampling event and may assist in the data
interpretation process (e.g., observed that drycleaner operated with door or windows propped open for
ventilation).
y;A�'6 c4
(Adapted from the NJDEP Vapor Intrusion Guidance, October 2005)

Upen courtyard - r
Sample
30' 120 W. Lewis St.
IA-1
0
ate, I
arar
25'
SSV-20
120 W. Lewis
Bas
' Women's Restroom
120 W. Lewis St.
9,900 sq. ft.
IA-2 IA-3
FIGURE 1
Locations of IA Samples at
120 W. Lewis Street, Greensboro, NC
NC erownfields
IAQ Sample Work Plan - Version 2.3

Attachment C

�"� ■■ �«� � 2:a g &��
§k�
\ t �

OC33
=Detergent ❑isi f Mc
0A Reg No. 1839-95-6243
0ko� Pr9dud i Producto BilVid6
dam. r,�p��1k Cr a yuu., cwir a p„ yr ias.a Mse �++�i+ r w -AWN n+�
1 b ��'^°�arr�,catyneem�urrr.acwr..+cm•a�rbMr'r�'rr�
�a
M." � rye wn m oa c~ 'eris r erM�"
'� arrai-wr.
F��I r
'rar4r&.,rtb,.yppn e.r w�.„wwR+ yfyw
. v�y�" n 4ARK irewr. �erewS. � ��
aw
rat rwriwu + NmTwrow m� 09
� maw xu� �+r.4 wr oASKe. wwe a.n w ^w'+
na+�uarr rrr. 1P�
� �+Aa� saw. spa.. �•e^'".''. ��rp,
a
v, arowirrnrtr�rw,r"�
-�4
0 nrr...►r rr
J

"� '
ll�
A

IVA
lr
` � .��..k'�--air .II ! � • _
- I ,

w ,tiw, r - -
l AA
r

_ ��
! 1 1
f �
n i -
R-

i 7
��J
Ak A
kvi
4�

a
yy ■fir -- ��OS
O"lqqw 4 * %
1 T
E�
_ If■
■ M
W
a+
.x
{n `
�►
Sul
0
s
a
1 v
r * �
f J.
LJ 7S
Boa _
ft'f
Tr

OF
0 A9
loo - -- --- iiiii mill
to !

6.3
:r
Mir
7*t
NZW-1 -
Of

Attachment D

INDOOR AIR BUILDING SURVEY
and SAMPLING FORM
Site Name: S'vy✓' ID#: r41VILS �✓M
Preparer'sname: �V1`SGY�R
Preparer's affiliation: y
Part I - Occupants
&ED
Date: 04 - 257 - 2OZ j
Phone #:
Building Address: TyUvxf.6m S4. AD tj C_
Property Contact:1,M Wrie Renter /other:
Contact's Phone: home ( ) work ( ) cell ( )
# of Building occupants: Children under age 13 Children age 13-18 Adults
Part II - Building Characteristics
Building type: residential / multi -family residential office strip mall /commercial industrial
Describe building: f7f-_F 1 C WO k IBC 1;RV'V f1R? Year constructed: S
Sensitive population: day care / nursing home / hospital / school / other (specify): Nok_TG�
Number of floors below grade: _ _ (full basement / crawl space /slab on grade) V nA 1 N C>PtAD9
Number of floors at or above grade: I
Depth of basement below grade surface: ft. Basement size: N R` ft2
Basement floor construction: concrete / dirt / floating / stone / other (specify): N T
Foundation walls: poured concrete / cinder blocks / stone / other (specify) )?.RJ['
Basement sump present? Yes 10
Sump pump? Yes 16) Water in sump? Yes / No
Type of heating system (circle all that apply):
hot air ' tion hot air radiation wood steam radiation
heat pump hot water radiation kerosene heater electric baseboard
oth ecify):
Type of ventilation system circle all that apply):
ral . ' onditionin mechanical fans ha ventilation fans
individual air conditioning units itchen range hood fan outside air intake
other (specify):
Type of fuel utilized (circle all that apply):
Natural gas electric fuel oil / wood / coal / solar / kerosene
Are the basement walls or floor sealed with waterproof paint or epoxy coatings? Yes CN—O)

Is there a whole house fan? Yes ` l
Septic system? Yes / Yes (but not used) No
Irrigation/private well? Yes / Yes (but not used No
Type of ground cover outside of building: grass / ncret sphalt other (specify)
Existing subsurface depressurization (radon) system in place? Yes / active / passive
Sub -slab vapor/moisture barrier in place?
Type of barrier:
Part III - Outside Contaminant Sources
Yes t;156 )
Other stationary sources nearby (gas stations, emission stacks, etc.):
N'V
Heavy vehicular traffic nearby (or other mobile sources): -f—t _
Part IV Indoor Contaminant Sources
Identify all potential indoor sources found in the building (including attached garages) and crawlspace (if
present), the location of the source (floor and room), and whether the item was removed from the building
48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items
should be completed at least 24 hours prior to the commencement of the indoor air sampling event.
Potential Sources
Location(s)
Removed
(Yes 1 No NA)
Gasoline storage cans
019
Gas -powered equipment
Kerosene storage cans
Paints / thinners / strippers
t+1p
Cleaning solvents
Oven cleaners
N0
Carpet / upholstery cleaners
Other house cleaning products
Moth balls
C>
Polishes / waxes
PO
Insecticides
Furniture / floor polish
Nail polish / polish remover
T�
Hairspray
Cologne / perfume
0
Air fresheners
Fuel tank (inside building)
NA
Wood stove or fireplace
jV-Q
NA
New furniture / upholstery
New carpeting / flooring
NA
Hobbies - glues, paints, etc.
{�

Part V - Miscellaneous Items
Do any occupants of the building smoke? Yes No
Last time someone smoked in the building? r^cy, KS
How often? _—PA —
hours / days ago
Does the building have an attached garage directly connected to living space? Yes
If so, is a car usually parked in the garage? Yes No
Are gas -powered equipment or cans of gasoline/fuels stored in the garage? Yes /(S)
Do the occupants of the building have their clothes dry cleaned? Yes / No
If yes, how often? weekly / monthly / 3-4 times a year I LP K1, 0V-"0 �
Do any of the occupants use solvents in work? Yes /,
If yes, what types of solvents are used? �-1 J A
If yes, are their clothes washed at work? Yes 61
Have any pesticides/herbicides been applied around the building or in the yard? Yes ll�o
If so, when and which chemicals? � _ - _ _
Has there ever been a fire in the building? Yes No If yes, when? �-
Has painting or staining been done in the building in the last 6 months? Yes No
If yes, when f PO
Part VI - Sampling Information
and where? — KNA
Sample Technician: ,r i RM Y' I - _ Phone number: (536)
Sample Source: door Ai Crawlspace Air / Sub -Slab / Near Slab Soil Gas / Exterior Soil Gas
Sampler Type: Tedlar bag / Sorbent / Stainless Ste�Cani�ste/ Other (specify):
Analytical Method: 0-15 TO-17 / other: Cert. Laboratory:
Sample locations (floor, room):
Field ID 4 Field ID # r-
Field ID # 7M �'J 5 h Field ID #
Were "Instructions for Occupants" followed?AQ1/11VO
If not, describe modifications: (1 e-
P�

Provide Drawing of Sample Location(s) in Building
�11
W.
C? I-w'c
Part VII - Meteorological Conditions
Was there significant precipitation within 12 hours prior to (or during) the sampling event? Yes No
Describe the general weather conditions:
Part VIII — General Observations
Provide any information that may be pertinent to the sampling event and may assist in the data
interpretation process (e.g., observed that drycleaner operated with door or windows propped open for
ventilation).
(Adapted from the NJDEP Vapor Intrusion Guidance, October 2005)

FIGURE 3
Locations of IA Samples at
109-111 W. Lewis Street, Greensboro, NC
NC Brownfields SSV Sample Work Plan
Version 2.3

Project Name: West Lewis Street Brownfields Site
PYRAMID Project Number: 2023-009
ENVIRGNMENrAL&ENGINEERING, P.C. Project Address : 120 W. Lewis Street, Greensboro, NC
IAQ Fieldwork Record
Weather Expected: Clear am SAMPLE
NAME
Category Description Description
Address �_ W. Lewis St. Ef
ee,,11
North / Soutth�('/ Center W n
SG Location AQ / CSBus.
Operations? lJl7-"► 0 c�PA-�-
Use for space IfA�YI�Sv
�nCM
Crawlspace or I`A_ J
INSPECTION: ET Date : 09 / 11 / 20223
Q Pesticides:
uu
Walk-Thru HVAC : _ p.Ja�`V1t Vk6V?V �l1�t4 Vent Fans : �"CI`- FrP
Chem. Inventory ? Yes No Combustion Sources: r4IOV'� P- M
EfHaz. Chems Present ? Yes NO Rennovations
r7rHouseke ping M9± g Water Damage:
lrrn ONe4l� _
Smoking - Floor Mats: j
Fuel Containers: El Ave Temp: F Workers Present ? N
"P" Tr with H at tchens /
,�
Other : L/�C �YI� /�L/�. I � fQ 0.
Air Sampling Date: Cylinder Number: I 1
Batch Cert. / Individ. Cert. Flow Controller - 8hr #
Readings of Vacuum ( inches of Hg) over 8 Hour Sample COLLECTION Time & Vacul
Starting Time : �1 � Cannister Vacuum /Pre -Sampling
Time/ HIS �f Hg"./ l' ! J f'" / Hg
++
r l Hg'r-)- / Hg
1
e Hg" . / Hg"
1z Sample End Time ! r
L� • 45, 0, Sample Cannister Ending Vacuum Hg"
Sample dHg" Vacuum on COC a" EPacked in Pace Boxes Date 7 17W
�*
Shipping Ef (oK) Cylinder inspected Damaged FedEx Ship : Tracking #
Materials Needed :: (2)Crescent Wrenches/ Teflon Tubing/Zip Ties/Project File/BinderClips/PID/ Field Sheets/Extra Ferrules/Cutter
Pyramid Environmental & Engineering, P.C. 503 Industrial Avenue, Greensboro, NC 27406 Phone - [phone]

Project Name: West Lewis Street Brownfields Site
PYRAM 1 D Project Number: 2023-009
ENARONMENTAL&ENGINEERING,P.c. Project Address : 120 W. Lewis Street, Greensboro, NC
IAQ Fieldwork Record
Weather Expected: Clear am SAMPLE
NAME _
Category Description
Description
Address �� W. Lewis St.
/.
Er North / sbd7t— / Center M Yi1'1
SG Location [ErQAQ / CS
ET Bus. Operations? 1 ✓��5 1�Ni S
c
Use for space [a fAuk,AA
Crawlspace or ' I`AAQ
INSPECTION T71 Date : 09 / 11 / 2�,0(23
Ef Pesticides : }
Walk-Thru HVAC : �7 f*r
171 Vent Fans : — 00V\9-
Chem. Inventory ? Yes No
Combustion Sources
tt __1
V� Haz. Chems Present ? Yes NO
Rennovations : 061kk 1A/1
EDHousekeeping
Water Damage :
Smoking "" Floor Mats:
Eij""Fuel Containers : l F µ
Ave Temp : * I A ° F [� Workers Present?
Er"P" Traps Filled with H2O / Floor Drains / Bathrooms / Sinks / Bars / Kitchens
Other:
Air Sampling Er Date : LS17-3
ET Cylinder Number: 15
Iff Batch Cert. / I ivid. Cert.
ffKFlow Controller - 8hr # 3 ©g 57
Readings of Vacuum ( inches of Hg ) over
8 Hour Sample COLLECTION Time & Vacul
Time �: 153 Cannister Vacuum /Pre -Sampling 30, n
Starting
Time/ HG ! / Hg"
0, / Hg"
3 f Hg/ Hg
I
5 Hg"01/ / Hg
Sample End Time �p ,t �3
Sample Cannister Ending Vacuum g.0 Hg"
Sample Hg" Vacuum on COC
Packed in Pace Boxes �Dateq
Shipping
Cylinder inspected OK) Damaged
Fed Ex Ship : Tracking #
Materials Needed :: (2)Crescent Wrenches/ Teflon Tubing/ZipTies/ProjectFile/BinderClips/P101 Field Sheets/Extra Ferrules/Cutter
Pyramid Environmental & Engineering, P.C. 503 Industrial Avenue, Greensboro, NC 27406 Phone - [phone]
rA
k,

r
INDOOR AIR BUILDING SURVEY
and SAMPLING FORM
Site Name: • t' � ,��'ID#: viet,.) tow—__
Preparer's name: #IV% Date: a?L1.202--3
Preparer's affiliation: _ I` x Phone #: 5
Part I - Occupants " " J (�
Building Address: � '1' RCS ftt,bt/R�I 1 4.7- V, W• h�y "7 • , (�Ot PC,,
Property Contact: Owner / Renter / other:
Contact's Phone: home ( ) work ( ) cell ( )
# of Building occupants: Children under age 13 Children age 13-18 Adults
Part II — Building Characteristics
Building type: residential / multi -family residential / office / strip mall / commercial industrial
Describe building: � (911,� � �" p�t/V✓ Year constructed:
Sensitive population: day care / nursing home / hospital / school / other (specify): 0 Of
Number of floors below grade: _ (full basement / crawl space / slab on ad 16
Number of floors at or above grade: I
Depth of basement below grade surface: I'* ft. Basement size:z
Basement floor construction: concrete / dirt / floating / stone / other (specify):
PA -
Foundation walls: poured concrete / cinder blocks / stone / other (specify) e2 r
Basement sump present? Yes / lJ Sump pump? Yes / o Water in sump? Yes /
Type of heating system (circle all that apply):
hot air circulation hot air radiation wood steam radiation
eat pun hot water radiation kerosene heater electric baseboard
other (specify):
Type of ventilation system (circle all that apply):
cen a air condition mechanical fans athroom, ventilation f
individual air conditioning units kitchen range hood fan u si a air intake
other (specify):
Type of fuel utilized (circle all that apply):
Natural gas a ect ' fuel oil / wood / coal / solar / kerosene
Are the basement walls or floor sealed with waterproof paint or epoxy coatings? Yes No

Is there a whole house fan? Yes / No
Septic system? Yes / Yes (but not used) / 0
Irrigation/private well? Yes / Yes (but not used) No
Type of ground cover outside of building: / Crete�sp�halther (specify)
Existing subsurface depressurization (radon system in place? Yes No
Sub -slab vapor/moisture barrier in place? Yes
Type of barrier: (/
Part III - Outside Contaminant Sources
active /passive
Other stationary sources nearby (gas stations, emission stacks, etc.):Q
Heavy vehicular traffic nearby (or other mobile sources):
Part IV — Indoor Contaminant Sources
Identify all potential indoor sources found in the building (including attached garages) and crawlspace (if
present), the location of the source (floor and room), and whether the item was removed from the building
48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items
should be completed at least 24 hours prior to the commencement of the indoor air sampling event.
Potential Sources
Location(s)
Removed
(Yes / No / NA)
Gasoline storage cans
00
Gas -powered equipment
PC)
Kerosene storage cans
t4'o
Paints / thinners / strippers
0
Cleaning solvents
Oven cleaners
Carpet / upholstery cleaners
jJ�Q
Other house cleaning products
Moth balls
N p
Polishes / waxes
Insecticides
Furniture / floor polish
N
Nail polish / polish remover
Q
Hairspray
0
Cologne / perfume
No
Air fresheners
Fuel tank (inside building)
N0
NA
Wood stove or fireplace
NA
New furniture / upholstery
�1
New carpeting / flooring
NA
Hobbies - glues, paints, etc.

ri
Part V - Miscellaneous Items
Do any occupants of the building smoke? Yes No How often?
Last time someone smoked in the building? hours days ago
Does the building have an attached garage directly connected to living space? Yes No
If so, is a car usually parked in the garage? Yes 6�1
Are gas -powered equipment or cans of gasoline/fuels stored in the garage? Yes�o
Do the occupants of the building have their clothes dry cleaned? Yes
If yes, how often? weekly / monthly / 3-4 times a year
Do any of the occupants use solvents in work? Yes / 5
If yes, what types of solvents are used? -_N 4 �—
If yes, are their clothes washed at work? Yes /
1!9
Have any pesticides/herbicides been applied around the building or in the yard? Yes
If so, when and which chemicals? Bfi/(Y) (• !G!(� _
Has there ever been a fire in the building? Yes No If yes, when?
Has painting or staining been done in the building in the last 6 months? Yes
If yes, when N O and where? ►`I O
Part VI — Sampling Information
Sample Technician: 6 r) a, a - Phone number: qu-.�.) a - 3114
Sample Source: Indoor Air / Crawlspace Air / Sub -Slab / Near Slab Soil Gas / Exterior Soil Gas
Sampler Type: Tedlar bag / Sorbent / ainless Steel Canister Other (specify):
Analytical Metho : O-1 / TO-17 / other: Cert. Laboratory
Sample locations (floor, room):
Field ID #--13�p RLd ID #
Field ID # "V f(i + Ale- ti Field ID #
Were "Instructions for Occupants" followed? Yes No
'c
If not, describe modifications: )y j1 0CC �cpule
JO10

Provide Drawing of Sample Location(s) in Building
Part VII - Meteorological Conditions
Was there significant precipitation within 12 hours prior to (or during) the sampling event? Yes / No
Describe the general weather conditions:
Part VIII -- General Observations
Provide any information that may be pertinent to the sampling event and may assist in the data
interpretation process (e.g., observed that drycleaner operated with door or windows propped open for
ventilation).
(Adapted from the NJDEP Vapor Intrusion Guidance, October 2005)

M
Ch
U
E
to
U)
U)
U
'Z .99
o
U
Z
O
O
�p
cn
Y
a
v
E
N
M
M
N
U
i
j o
N
LL
3
O
v
0
?�
o
J
m
ei
V
co
Z
N

Project Name: West Lewis Street Brownfields Site
PYRAMID Project Number: 2023-009
ENVIRONMENTAL&ENGINEERING, P.C. Project Address : 120 W. Lewis Street, Greensboro, NC
IAQ Fieldwork Record
Weather Expected. Clear am SAMPLEJ /t ry
NAME t� 3
Category
Description
i {Description
Address ` } 7^ 7W. Lewis St.
North
SG Location IAQ _ CS
Bus. Operations? V U'�
Use for space
awlspace r IAQ
INSPECTION: Date : 09 / 11 / 2023
pesticides : !X ,�
Walk-Thru HVAC : ' N yr.
n ,,
ent Fans : r "'r'
Haz. Chems Present ? Yet NO
Rennovations :
Housekeeping i T ___
Water Damage :�1-�T�
moking - l �� Floor Mats:
Fuel Containers :
Ave Temp: WF [� Workers Present ? Y
F oor Drains /Bathrooms /Sinks Bars / Kitc ens
Erther: L11f�1.&a
y�%(/lilij►�J '}Agoa--
Air SamplingEr Date :S Z QZ
ylinder Number:
ErBatch Cert. Individ. Cert.
Flow Controller - 8hr # 5 qt7::;,
Readings of Vacuum Inches of Hg) over
8 Hour Sample COLLECTION Time & Vacui
Starting Time
Cannister Vacuum / Pre -Sampling:
Time/ HG 0 He
� ,(,��'ri, / Hg"
r
1 1Q Hg"C
Hg"
�.®
Hg"
/ Hg
Sample End Time 6�
[a Sample Cannister Ending Vacuum Hg"
SampleER" Hg" Vacuum on COC I v
Packed in Pace Boxes DateIPhf 110
T'
Shipping
Cylinder inspecte ( OK ) Damaged
Fed Ex Ship :Tracking #
Materials Needed :: (2)Crescent Wrenches/ Te/lonTubing /Zip Ties/Project File/Binder Clips/ PID/ Field Sheets/Extra Ferrules/Cutter
Pyramid Environmental & Engineering, P.C. 503Industrial Avenue, Greensboro, NC 27406 Phone - [phone]

a
°
T d
g c
E
V �'
q
° o
d O =
!2E
T
°
0 C
E o v°
!C
N N yd
Cy
u o
d
E d a
E o A c a
Oo
O
CO
u
nMfrq
"-s
c
v
m
E u &
o
N E o
c
E
�'o
0
d
w
in
�`
o c
W
�. 0
N
n
.d.
..-�
O
aLab
Receipt Pressure
o
=
Final Pressure
Ni
v�
v w
Initial Pressure
C i-
U
= O W
aJ �
CD
M W
M
U7
N
N
00
°D
d
a E
M
ax
E
J
O
`
d
a
v;
d
o:
E
O
X
}I
M
W
=
Q
U!
W
E;
0
O 7 O
O L
d_ X
o
W
d.
Q
W O
V W ti
0
a
c E
Qz Co
QC"wQ
M l`�
d
O
U
_jomLn Z
J O
� m
J
X
a L
k A 11
Coit
.1 O
A
y 1 Q
CO 11
V, Q I N II J II
(`
A
of _ Q LA c rn 0
14%
N
M
a
C U
n
V1
N v
In In 1%
N a
N 0
l
V M N
U
O X
V
d d
2
id-
E
�
v
W
a c
E>
3
CC
N C ,
° E
n
y U
U � �
'O O U
C U '
„ c
d V O
V N J
O Y
v
on C J
3 E
.6 Cp �
.c
- d L = U on _.
H O S
q U ,
d =
a
a, v
_c t
J N 0
z
O c
Co z
dU
❑G
u
Q
V
J
J
• m J
g an
oa
E
a ° L
u Q
N N
Q O ❑ ❑
LU
z
w
3
u
C. Ao
Qja
C..
F M
Z
N
V d
7 u O X �..' c -�. c .�..
c
o y
Q
Z
.Q
m on an
o
J
3 tea,
an
14
`o' E
p Z
A
a
u
d
° w
C V p n U c
N C
N N
o 0
N
o
.0
4 E C N Ul
E E U ° -
N
°
v s
Q o_
a a
a
U°
m
a
m ° v v a a a
u o
U
w

I
INDOOR AIR BUILDING SURVEY
and SAMPLING FORM 44"C401
Site Name: ui. Lewis 46d B~V 6MJ ID#:
Preparer's name: n 41' cs {� Date: 01 - 25 -,24923
Preparer's affiliation: Y yr► (1C Phone #: _ (a ' ?j - j 117
Part I - Occupants
Building Address: o (- I D-� W . .( a/ " !.(JI (� �d N
Property Contact: C Q. w S
Contact's Phone: home (ZI(p) ,il 0 — ` 5CVwork
r
Owner enter / other: _
-- cell
# of Buildin occupants: Children under age 13 Children age 13-18
JOCCA-A, Wes' Ci e•-+ kr-ck�&
Adults
Part II — Buildiniz Characteristics
Building type: residential / multi -family residential / office / strip mall commercia / industrial
Describe building: C gin r>• ewe& 8 vi } kew4* Year constructed: 1OW S
Sensitive population: day c:6e:
re / n sing home / hospital / school / other (specify).
Number of floors below grade _ (full basement / crawl space / s�abon�ae rY1�}1rJ �j.q�/Q
Number of floors at or above
Depth of basement below grade surface: N Ar ft. Basement size: M Pk ftz
Basement floor construction: concrete / dirt / floating / stone / other (specify): N A -
Foundation walls: poured concrete / / stone / other (specify) 13J.1 L*C
Basement sump present? Yes No Sump pump? Yes / No Water in sump? Yes No
Type of heating system (circle all that apply):
hot air circulation hot air radiation wood steam radiation
eat um hot water radiation kerosene heater electric baseboard
other (specify):
Type of ventilations stem (circle all that apply):
central air conditi�itio2n
mechanical fans athroom ventilation fans
individual air cong units ttchen ran e hood fan outst a air in a e
other (specify):
Type of fuel utilized (circle all that apply):
atural s t5p
fuel oil / wood / coal / solar / kerosene
Are the basement walls or floor sealed with waterproof paint or epoxy coatings? Yes No

Is there a whole house fan?
Septic system?
Irrigation/private well?
Yes / 0
Yes / Yes (but not used) / No
Yes / Yes (but not used) No
Type of ground cover outside of building: gras / concrete / pat other (specify) _
Existing subsurface depressurization (radon) system in place?
Sub -slab vapor/moisture barrier in place?
Type of barrier:
Part III - Outside Contaminant Sources
Yes No
Yes (. o active / passive
Other stationary sources nearby (gas stations, emission stacks, etc.): NO
Heavy vehicular traffic nearby (or other mobile sources): r-6,01t
Part IV — Indoor Contaminant Sources
Identify all potential indoor sources found in the building (including attached garages) and crawlspace (if
present), the location of the source (floor and room), and whether the item was removed from the building
48 hours prior to indoor air sampling event. Any ventilation implemented after removal of the items
should be completed at least 24 hours prior to the commencement of the indoor air sampling event.
Potential Sources
Location(s)
Removed
(Yes / No / NA)
Gasoline storage cans
�J
Gas -powered equipment
�—
Kerosene storage cans
Paints / thinners / strippers
+
Ll
Cleaning solvents
Oven cleaners
Carpet / upholstery cleaners
Other house cleaning products
Moth balls
p
Polishes / waxes
N O
Insecticides
' h C S
Furniture / floor polish
to -p
Nail polish / polish remover
T-40
Hairspray
140
Cologne / perfume
u IJ PLAA
Air fresheners
Fuel tank (inside building)
Q
NA
Wood stove or fireplace
NA
New furniture / upholstery
New carpeting / flooring
NA
Hobbies - glues, paints, etc.
W

1
Part V — Miscellaneous Items
Do any occupants of the building smoke? Yes No How often? amA
Last time someone smoked in the building? y4L� hours / days ago
Does the building have an attached garage directly connected to living space? Yes No
If so, is a car usually parked in the garage? Yes
Are gas -powered equipment or cans of gasoline/fuels stored in the garage? Yes No
Do the occupants of the building have their clothes dry cleaned? Yes / No /
If yes, how often? weekly / monthly / 3-4 times a year LtN K,�S(�►vU1'� /
Do any of the occupants use solvents in work? Yes /6
If yes, what types of solvents are used? J 0—
If yes, are their clothes washed at work? Y No
Have any pesticides/herbicides been applied around the building or in the yard? Yes
If so, when and which chemicals? A92
Has there ever been a fire in the building? Yes &
If yes, when?
Has painting or staining been done in the building in the last 6 months?
Ye / No
If yes, when -1'�W _ and where? kW_ l vr1GyZ�t�
Part VI — Sampling Information
Sample Technician: CKIIA11 " mrl Phone number: ( 3 (p) 3 3 - 4,
Sample Source: door A' / Crawlspace Air / Sub -Slab / Near Slab Soil Gas / Exterior Soil Gas
Sampler Type: Tedlar bag / Sorben / Stainless Steel Canister / Ot r (specify):
Analytical Metho : 0-15 / TO-17 / other: Cert. Laboratory:
Sample locations (floor, room):
Field ID # TA7- _ _ Gilftvi �
Field ID # 3 jq IjCC6
Ayub-
Were "Instructions for Occupants" followed?
If not, describe modifications: PO 0
& L i Vke
PA
Field ID # z�a-!✓►'��'+?®B�"?
Field ID #*U&—A/( / 1 eD VP
Yes /
wG�� _

Provide Drawing of Sample Location(s) in Building
. - p Vol
O ,Pr"
Part VII - Meteorological Conditions
Was there significant precipitation within 12 hours prior to (or during) the sampling event?
Describe the general weather conditions: -
Part VIII - General Observations
Yes / No
Provide any information that may be pertinent to the sampling event and may assist in the data
interpretation process (e.g., observed that drycleaner operated with door or windows propped open for
ventilation).
y;A�'6 c4
(Adapted from the NJDEP Vapor Intrusion Guidance, October 2005)

Upen courtyard - r
Sample
30' 120 W. Lewis St.
IA-1
0
ate, I
arar
25'
SSV-20
120 W. Lewis
Bas
' Women's Restroom
120 W. Lewis St.
9,900 sq. ft.
IA-2 IA-3
FIGURE 1
Locations of IA Samples at
120 W. Lewis Street, Greensboro, NC
NC erownfields
IAQ Sample Work Plan - Version 2.3

MA
Project Name: West Lewis Street Brownfields Site
PYRAMID Project Number: 2023-009
ENVIRONMENTAL& ENGINEERING. P.C. Project Address: 120 W. Lewis Street, Greensboro, NC
IAQ Fieldwork Record
Weather Expected: Clear am SAMPLE ,/)
NAME )
Category
Description
Description
Address
2D W. Lewis St.
� North South / Center
SG Location
In IAQ ✓ CS
4
d Bus. Operations? LUPtk.�.iAC1 7
p �, ./
Use for space ID Qa 97a4e
Crawlspace or ('IAQ
INSPECTION: � Date : 09 / 11 / 2023
Pesticides : o r'4
Walk-Thru
HVAC : 0 N
Vent Fans: Q
Chem. Inventory ? es No
f'
Combustion Sourcees�:.
EHaz. Chems Present ? Yes NO
�^
Rennovations : 7�Ybt" q, �
n
Housekeeping i,309,1^nAL
elm
[Er Water Damage: Imo . �i/Vy�✓i
V
see_ 9 S
Fuel Containers:
1�lfMQ
Smoking -! Floor Mats: '—JP
Ave Temp : �7 , ;° F Worrkeers Present ? Y
IP" Traps Filled with H2O / Floor Drains
/ Bathrooms / Sinks / Bars / Kitchens / if_J
Other: LdCYA'
—
Air Sampling
Date: 0 2-
Cylinder Number" n Z 5
Batch Cert. / I divid. Cert.
Flow Controller - 8hr #j T7 2-
EfReadings of Vacuum ( inches of Hg) over
8 Hour Sample COLLECTION Time & Vacul
lRe
l:
StartingTime : 07 .� r7
Cannister Vacuum; Pre -Sampling: a7 •5
Time/ HG
0-7 . 56 -7« Hg"
,ti Hg"(_); I
Hg"
fJ 9 I Hg �.
oHg" / Hg"
T
fry
G C r
Sample End Time f 5 r ✓ (0
Sample Cannister Ending Vacuum � Hg" E
Sample
Hg" Vacuum on COC e
Packed in Pace Boxes Date
Shipping
IZF Cylinder inspecte ( OK ) Damaged
F FeclEx Ship : Tracking #
Materials Needed :: (2)Crescent Wrenches/ Teflon Tubing/ZipTes/Project File/BinderClips/PID/ Field Sheets/Extra Ferrules/Cutter
Pyramid Environmental & Engineering, P.C. 503 Industrial Avenue, Greensboro, NC 27406 Phone - [phone]

ProjectName: West Lewis Street Brownfields Site
PYRAMID Project Number: 2023-009
ENVIRONMENTAL& ENGINEERING, P.G. Project Address : 120 W. Lewis Street, Greensboro, NC
IAQ Fieldwork Record
Weather Expected. Clear am SAMPLE A- 2
NAME ..
Category
Description Description
Address
- W. Lewis St. North / South / Center
SG Location
AQ / CS Bus. Operations? a Q�� ram
n ,
Use for space d8✓C�`S Axtk w Crawlspace or IAQ�
INSPECTION:
Date : 09 / 11 / 2023 Pesticides: ►J .- 3 V iq�
Walk-Thru
HVAC : Vent Fans : C41/ ►M 1'+►oUw1S l
Chem. Inventory .7 kYfs No Combustion Sources:yZ;�_"qL ©Ve'y �..
Haz. Chems Present ? Yes NO Rennovations : 1 Z?.Zlr
Housekeeri g Water Damage
Smoking- I-907'.L— �FloorMats:
,,�
EfFuel Containers'./i Ave Temp : ! Y ° F [` Workers Present ? Y N�
'P" Traps Filled with H2O / Floor Drains / Bathrooms / Sinks / Bars / Kitchens /
ETother: �1 �! ��t�l Q/1%1� t & t �,�4. e' e_ ^�~
14
Air Sampling
Eff Date: S -AO13 Cylinder Number: — u
1Z Batch Cert. / In' ivid. Cert. Flow Controller - 8hr # 3 *�, 3
01, Readings of Vacuum ' of Hg) over 8 Hour Sample COLLECTION Time & Vacul
Starting Time : 00-.00 Cannister Vacuum / Pre -Sampling: 2010
Time/ HG
0� �� / .1� Hg � �,r f�E � l L �r l Hg '_�.�%'f r
), J. 3 Hg" { PAW / t7 r Hg'� •�/
i
Hg"r)�I�/1% / Hg
Sample End Time G It V Sample Cannister Ending Vacuum G r 0 Hg"
Sample
Hg" Vacuum on COC t 0 Packed in Pace Boxes Date a
Shipping
dCylinder inspected ( OK) Damaged FedEx Ship : Tracking #
Materials Needed :: (1)Crescent Wrenches/ Teflon Tubing/Zip Ties/ProjectFile/BinderClips/PID/ Field Sheets/Extra Ferrules/Cutter
Pyramid Environmental & Engineering, P.C. 503 Industrial Avenue, Greensboro, NC 27406 Phone - [phone]

iz -
PYRAMID
�HMRONNIENTAL & ENGINEERING, P.C.
Weather Expected: Clear am
Project Name: West Lewis Street Brownfields Site
Project Number : 2023-009
Project Address : 120 W. Lewis Street, Greensboro, NC
IAQ Fieldwork Record
SAMPLE ^ � ` r�
NAME 1
Category Description
Description
Address 2� W. Lewis St.
North / UoXth / Cenntterr,,,,, R04-k
SG Location IAQ / CS
Bus. Operations? SO-K �%_ G
,, ��1
Use for space � %00 fflI�\S � �`yJyhr ow'-)
Crawlspace or IAQ
INSPECTION : Date : 09 / 11 / 2023
Pesticides: B DXCA,*' 3MW L S
Walk Thru �✓ HVAC : Y' M�
P0.�.%O
Vent Fans :/���
Chem. Inventory ? es No
dHaz. Chems Present ? Yes
Combustion Sources
Rennovations : — PD M y��
ErHousekeeping
Water Damage: o
Smoking - �N� I� X— Floor Mats :
� ee
Fuel Containers: `� �iGiv�_ ��
Ave Temp: 6 77— ° F Workers Present ? Y
P' Traps Filled with H2O
athrooms Sinks ars Kitchens /
Other : \:1 ftzy� mr liv�
0,4E ( ► V'44 We*le
Z) aKA -Ta-
Air Sampling Date: .2,�3
F-71Cylinder Number : 1 -
Batch Cert. / Individ. Cert.
El Flow Controller - 8hr # r -40(o l.'► ��
Readings of Vacuum ( inches of Hg ) over
8 Hour Sample COLLECTION Time & Vaculo
1
y
Starting Time :©�
Cannister Vacuum / Pre -Sampling:
Time/ HG i .[('� Hg'
"
• �J ' Hgow
rl
t V O�� • J Hg"
% )
/ o / �. Hg" s /
f) , 1 J! Hg" 0,Offl) / Hg"
1
Sample End Time 1 &t D5
Sample Cannister Ending Vacuum t� Hg"
Sample ErHg" Vacuum on COC
Packed in Pace Boxes Date jAk Z3 PIP
Shipping
Ef Cylinder inspected )amaged
((OK
Fed Ex Ship : Tracking It
Materials Needed :: (2) Crescent Wrenches/ Teflon Tubing / Zip Ties / Project File / Binder Clips / PID / Field Sheets / Extra Ferrules / Cutter
Pyramid Environmental & Engineering, P.C. 503Industrial Avenue, Greensboro, NC 27406 Phone - [phone]

Project Name: West Lewis Street Brownfields Site
PYRAMID ProjectNumber : 2023-009
ENVIRONMENTAL& ENGINEERING,P.c Project Address : 120 W. Lewis Street, Greensboro, NC
IAQ Fieldwork Record
Weather Expected: Clear am SAMPLE j
NAME J A _ D/ 1i
Category Description
Qnscription
Address `�✓ W. Lewis St.
I ,,
IT North / / Center waif�"Q►1
SG Location IAQ / CS
,. A
� Bus. Operations? � a yh r" "' �
Use for space 040M 80M
F1 Crawlspace or IAQ
INSPECTION: Date : 09 / 11 / 2023
Pesticides:
Walk-Thru ED V : I/V
E Vent Fans :
Chem. Inventory ? Yes No
Combustion Sources
Haz. Chems Present ? Yes NO
Rennovations
ErHousekeeping
Water Damage : ' ,�/11G- Y
rC��
Smoking QN v [Ef Floor Mats:
© Fuel Containers : f
Ave Temp : -72, F 1 Workers Present ? Y
ED""P" Traps Filled with H2O / or Drains athrooms Sinks Bars / s /
Other: ct'- a'vq1� ad
l 4� .L—
Air Sampling Date : t/41 2-5; 1 2,3 1
Cylinder Number: 2071 # ]
. Cert.
Batch Cert. / !inc2
Flow Controller - 8hr # 4 0(92
Readings of Vacuum ( of Hg ) over
8 Hour Sample COLLECTION Time & Vacul
Starting Time: ���
/�
Cannister Vacuum/ Pre -Sampling : 2q. 0
Time/ HG Hg"
1-�
4 �/ Hg"
f
D�j�-1 i L y L / 9.(O 1 Hg" 1 G� 0 / p. Hg"
Hg"
/ g
Sample End Time I "' t
QSample Cannister Ending Vacuum 1P•� Hg"
Sample ��g" Vacuum on COC �(/ ' 5
Ea -Packed in Pace Boxes � Date X 6
Shipping 12rCylinder inspecte OK ) amaged
Fed Ex Ship : Tracking #
Materials Needed :: (2)Crescent Wrenches/ Teflon Tubing/Zip Ties/Project File/Binder Clips/PID/ Field Sheets/Extra Ferrules/Cutter
Pyramid Environmental & Engineering, P.C. 503Industrial Avenue, Greensboro, NC 27406 Phone - [phone]

0
EL
d m
0
V
E°
N
o c
o
"
v
o m o y
- y"
L m
3 o
°
E; c F m
A
m o
E o 9
u
E e°
N E o
N a
N T
E c _�
N``
u
m
j
^/�
0
d N
lL C°
V
_
O
Receipt Pressure
aLab
=
Final Pressure
,
o
w
NE. o
Initial Pressure
v
c v~i
?ow
�^ a
NO
M W
M
l/1
N
N
MI
J
a
ON�►
�►� e�
d
v E
co
Co
M
J
0
C
N
E
E'
cVc
z
E
O
o
x
-
L
3
M
V w
j
6
)i
3
o
10
s
o
CL
i
Y F 7i
CD
.lti
0
1T 0
6
t
T
T 16 . •
0 � L
J = V-O ami
d X m
'O
C
^
\t
1 7
p
J E !6
W
��
d
111
o
v w U- r
0
v
o
O
4
�
161
O
MMCr
N
13
vw
60 Coo- Y
J 0g7 %A Z
O m
J L
x
a
��NC,
b
m
a_Q%A
v�i coo
It
0E n
v
N N
Ln Ln
N 16
N
m
o x 3
o,
Em,
n LL
E v
g on
oa
Q E g
o _
a - Q
'1 o❑❑
LU
Z
a
Of
K
El
3 0o H
Co
In
y
'O
ma
.G C
E 30
N Co
c
v
E p
O
ULU
'v
c
O
a`
F
H
F
F
H H
M
Y
i N
M
0
a10
0
0
0
0 0
v
s)�
U
a
z
n
.mi 0
3
.o
d
0 3
?
m ! t
a t
a
J Z
O
a�
C
t
a
v
v
v v�
a
a E C
Cr
a,
(U
.>
La
-o
u
.p
E o
au,
a
v
U
a a
a
om>E
_0 ld M
c c
1W

Attachment E

Con -testa
A Pace AaalyticW Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
October 11, 2023
Mike Jones
Pyramid Environmental & Engineering, PC
503 Industrial Ave., PO Box 16265
Greensboro, NC 27416
Project Location: W. Lewis St., Greensboro, NC
Client Job Number:
Project Number: 2023-009
Laboratory Work Order Number: 23JO188
Enclosed are results of analyses for samples as received by the laboratory on September 29, 2023. If you have any questions
concerning this report, please feel free to contact me.
Sincerely,
J "t�A� �—
Theresa L. Ferrentino
Project Manager
QA Officer
Katherine Allen
Laboratory Manager
Daren Damboragian
Page 1 of 33

Con -testa
A Pace Aaalyticaia Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
Pyramid Environmental & Engineering, PC REPORT DATE: 10/11/2023
503 Industrial Ave., PO Box 16265
Greensboro, NC 27416 PURCHASE ORDER NUMBER:
ATTN: Mike Jones
PROJECT NUMBER: 2023-009
ANALYTICAL SUMMARY
WORK ORDER NUMBER: 23J0188
The results of analyses performed on the following samples submitted to Con -Test, a Pace Analytical Laboratory, are found in this report.
PROJECT LOCATION: W. Lewis St., Greensboro, NC
FIELD SAMPLE # LAB ID: MATRIX SAMPLE DESCRIPTION TEST SUB LAB
IA-1
23J0188-01
Indoor air
EPA TO-15
IA-2
23J0188-02
Indoor air
EPA TO-15
IA-3
23J0188-03
Indoor air
EPA TO-15
IA-3 DUP
23J0188-04
Indoor air
EPA TO-15
IA-4
23J0188-05
Indoor air
EPA TO-15
IA-5
23J0188-06
Indoor air
EPA TO-15
CS-13B
23J0188-07
Ambient Air
EPA TO-15
Page 2 of 33

Con -testa
A Pace Aaalyticaia 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:
Analyte is found in the associated laboratory blank as well as in the sample.
Analyte & Samples(s) Qualified:
Dichlorodifluoromethane (Freon 12)
23J0188-01[IA-1], 23J0188-02[IA-2], 23J0188-03[IA-3], 23J0188-04[IA-3 DUP], 23J0188-05[IA-4], 23J0188-06[IA-5], 23J0188-07[CS-13B], B354602-BLKI
Reported result is estimated. Value reported over verified calibration range.
Analyte & Samples(s) Qualified:
Ethanol
23J0188-01RE1[IA-1], 23J0188-02RE1[IA-2], 23J0188-03RE1[IA-3], 23J0188-04RE1[IA-3 DUP], 23J0188-05RE1[IA-4], 23J0188-06RE1[IA-5]
V-05 Continuing calibration verification (CCV) did not meet method specifications and was biased on the low side for this compound.
Analyte & Samples(s) Qualified:
Carbon Tetrachloride
23J0188-01[IA-1], 23J0188-02[IA-2], 23J0188-03[IA-3], 23J0188-04[IA-3 DUP], 23J0188-05[IA-4], 23J0188-06[IA-5], 23J0188-07[CS-13B], B354602-BLKI,
B354602-BS1, 5094641-CCVI
The results of analyses reported only relate to samples submitted to Con -Test, a Pace Analytical Laboratory, for testing.
I certify that the analyses listed above, unless specifically listed as subcontracted, if any, were performed under my direction according to the approved methodologies listed
in this document, and that based upon my inquiry of those individuals immediately responsible for obtaining the information, the material contained in this report is, to the
best of my knowledge and belief, accurate and complete.
Meghan E. Kelley
Reporting Specialist
Page 3 of 33

Con -testa
A Face Aaalyticala Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: W. Lewis St., Greensboro, NC
Date Received: 9/29/2023
Field Sample #: IA-1
Sample ID: 23JO188-01
Sample Matrix: Indoor air
Sampled: 9/25/2023 15:56
Sample Description/Location:
Sub Description/Location:
Canister ID: 1028
Canister Size: 6 liter
Flow Controller ID: 3772
Sample Type: 8 hr
Work Order: 23JO188
Initial Vacuum(in Hg): -27.5
Final Vacuum(in Hg): -9.5
Receipt Vacuum(in Hg): -10
Flow Controller Type: Fixed -Orifice
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv
ug/m3
Date/Time
Analyte
Results
RL
MDL
Flag/Qual
Results
RL
MDL
Dilution
Analyzed
Analyst
Acetone
22
1.4
0.33
51
3.3
0.78
0.698
10/3/23 23:32
CMR
Benzene
0.14
0.035
0.011
0.45
0.11
0.034
0.698
10/3/23 23:32
CMR
Benzyl chloride
ND
0.035
0.019
ND
0.18
0.097
0.698
10/3/23 23:32
CMR
Bromodichloromethane
ND
0.035
0.0095
ND
0.23
0.063
0.698
10/3/23 23:32
CMR
Bromoform
ND
0.035
0.012
ND
0.36
0.13
0.698
10/3/23 23:32
CMR
Bromomethane
ND
0.035
0.019
ND
0.14
0.072
0.698
10/3/23 23:32
CMR
1,3-Butadiene
ND
0.035
0.029
ND
0.077
0.065
0.698
10/3/23 23:32
CMR
2-Butanone (MEK)
2.9
1.4
0.39
8.7
4.1
1.2
0.698
10/3/23 23:32
CMR
Carbon Disulfide
ND
0.35
0.067
ND
1.1
0.21
0.698
10/3/23 23:32
CMR
Carbon Tetrachloride
0.080
0.035
0.010
V-05
0.50
0.22
0.063
0.698
10/3/23 23:32
CMR
Chlorobenzene
ND
0.035
0.0088
ND
0.16
0.040
0.698
10/3/23 23:32
CMR
Chloroethane
ND
0.035
0.022
ND
0.092
0.058
0.698
10/3/23 23:32
CMR
Chloroform
0.22
0.035
0.0091
1.1
0.17
0.044
0.698
10/3/23 23:32
CMR
Chloromethane
0.48
0.070
0.014
0.99
0.14
0.029
0.698
10/3/23 23:32
CMR
Cyclohexane
0.044
0.035
0.015
0.15
0.12
0.053
0.698
10/3/23 23:32
CMR
Dibromochloromethane
ND
0.035
0.0094
ND
0.30
0.080
0.698
10/3/23 23:32
CMR
1,2-Dibromoethane (EDB)
ND
0.035
0.012
ND
0.27
0.089
0.698
10/3/23 23:32
CMR
1,2-Dichlorobenzene
ND
0.035
0.012
ND
0.21
0.073
0.698
10/3/23 23:32
CMR
1,3-Dichlorobenzene
ND
0.035
0.013
ND
0.21
0.078
0.698
10/3/23 23:32
CMR
1,4-Dichlorobenzene
0.077
0.035
0.013
0.46
0.21
0.077
0.698
10/3/23 23:32
CMR
Dichlorodifluoromethane (Freon 12)
0.55
0.035
0.015
B
2.7
0.17
0.072
0.698
10/3/23 23:32
CMR
1, 1 -Dichloroethane
ND
0.035
0.011
ND
0.14
0.045
0.698
10/3/23 23:32
CMR
1,2-Dichloroethane
0.073
0.035
0.013
0.30
0.14
0.053
0.698
10/3/23 23:32
CMR
1, 1 -Dichloroethylene
ND
0.035
0.010
ND
0.14
0.039
0.698
10/3/23 23:32
CMR
cis-1,2-Dichloroethylene
0.013
0.035
0.011
J
0.053
0.14
0.043
0.698
10/3/23 23:32
CMR
trans-1,2-Dichloroethylene
0.022
0.035
0.011
J
0.086
0.14
0.045
0.698
10/3/23 23:32
CMR
1,2-Dichloropropane
0.017
0.035
0.0096
J
0.077
0.16
0.044
0.698
10/3/23 23:32
CMR
cis- 1,3 -Dichloropropene
ND
0.035
0.016
ND
0.16
0.071
0.698
10/3/23 23:32
CMR
trans- 1, 3 -Dichloropropene
ND
0.035
0.018
ND
0.16
0.082
0.698
10/3/23 23:32
CMR
1,2-Dichloro- 1, 1,2,2-tetrafluoroethane (Freon 114)
0.017
0.035
0.014
J
0.12
0.24
0.098
0.698
10/3/23 23:32
CMR
1,4-Dioxane
ND
0.35
0.17
ND
1.3
0.62
0.698
10/3/23 23:32
CMR
Ethanol
2800
40
27
E
5300
75
50
20
10/3/23 22:59
CMR
Ethyl Acetate
2.1
0.35
0.10
7.6
1.3
0.36
0.698
10/3/23 23:32
CMR
Ethylbenzene
0.27
0.035
0.010
1.2
0.15
0.044
0.698
10/3/23 23:32
CMR
4-Ethyltoluene
0.045
0.035
0.015
0.22
0.17
0.075
0.698
10/3/23 23:32
CMR
Heptane
0.078
0.035
0.022
0.32
0.14
0.090
0.698
10/3/23 23:32
CMR
Hexachlorobutadiene
ND
0.035
0.020
ND
0.37
0.21
0.698
10/3/23 23:32
CMR
Hexane
ND
1.4
0.46
ND
4.9
1.6
0.698
10/3/23 23:32
CMR
2-Hexanone (MBK)
0.096
0.035
0.015
0.39
0.14
0.062
0.698
10/3/23 23:32
CMR
Isopropanol
65
40
13
160
98
31
20
10/3/23 22:59
CMR
Methyl tert-Butyl Ether (MTBE)
ND
0.035
0.017
ND
0.13
0.062
0.698
10/3/23 23:32
CMR
Methylene Chloride
0.13
0.35
0.094
J
0.46
1.2
0.33
0.698
10/3/23 23:32
CMR
4-Methyl-2-pentanone (MIBK)
ND
0.035
0.018
ND
0.14
0.076
0.698
10/3/23 23:32
CMR
Naphthalene
0.077
0.035
0.023
0.41
0.18
0.12
0.698
10/3/23 23:32
CMR
Propene
ND
1.4
0.38
ND
2.4
0.65
0.698
10/3/23 23:32
CMR
Styrene
0.46
0.035
0.019
2.0
0.15
0.080
0.698
10/3/23 23:32
CMR
1,1,2,2-Tetrachloroethane
ND
0.035
0.0086
ND
0.24
0.059
0.698
10/3/23 23:32
CMR
Page 4 of 33

Con -testa
A Pace Aaalyticala Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: W. Lewis St., Greensboro, NC
Sample Description/Location:
Work Order: 23JO188
Date Received: 9/29/2023
Sub Description/Location:
Initial Vacuum(in Hg): -27.5
Field Sample #: IA-1
Canister ID: 1028
Final Vacuum(in Hg): -9.5
Sample ID: 23JO188-01
Canister Size: 6 liter
Receipt Vacuum(in Hg): -10
Sample Matrix: Indoor air
Flow Controller ID: 3772
Flow Controller Type: Fixed -Orifice
Sampled: 9/25/2023 15:56
Sample Type: 8 hr
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv
ug/m3
Date/Time
Analyte
Results
RL
MDL
Flag/Qual Results
RL
MDL
Dilution
Analyzed
Analyst
Tetrachloroethylene
1.1
0.035
0.013
7.7
0.24
0.089
0.698
10/3/23 23:32
CMR
Tetrahydrofuran
1.5
0.35
0.072
4.3
1.0
0.21
0.698
10/3/23 23:32
CMR
Toluene
2.0
0.035
0.013
7.7
0.13
0.048
0.698
10/3/23 23:32
CMR
1,2,4-Trichlorobenzene
0.019
0.035
0.019
J 0.14
0.26
0.14
0.698
10/3/23 23:32
CMR
1, 1, 1 -Trichloroethane
ND
0.035
0.011
ND
0.19
0.059
0.698
10/3/23 23:32
CMR
1,1,2-Trichloroethane
ND
0.035
0.0089
ND
0.19
0.049
0.698
10/3/23 23:32
CMR
Trichloroethylene
0.024
0.035
0.014
J 0.13
0.19
0.076
0.698
10/3/23 23:32
CMR
Trichlorofluoromethane (Freon 11)
0.21
0.14
0.014
1.2
0.78
0.080
0.698
10/3/23 23:32
CMR
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
0.097
0.14
0.0077
J 0.74
1.1
0.059
0.698
10/3/23 23:32
CMR
1,2,4-Trimethylbenzene
0.31
0.035
0.016
1.5
0.17
0.079
0.698
10/3/23 23:32
CMR
1,3,5-Trimethylbenzene
0.10
0.035
0.018
0.49
0.17
0.088
0.698
10/3/23 23:32
CMR
Vinyl Acetate
0.78
0.70
0.12
2.7
2.5
0.44
0.698
10/3/23 23:32
CMR
Vinyl Chloride
ND
0.035
0.016
ND
0.089
0.041
0.698
10/3/23 23:32
CMR
m&p-Xylene
0.89
0.070
0.024
3.8
0.30
0.11
0.698
10/3/23 23:32
CMR
o-Xylene
0.39
0.035
0.013
1.7
0.15
0.055
0.698
10/3/23 23:32
CMR
Surrogates
% Recovery
% REC Limits
4-Bromofluorobenzene (1)
93.9
70-130
10/3/23 22:59
4-Bromofluorobenzene(1)
100
70-130
10/3/23 23:32
Page 5 of 33

Con -testa
A Face Aaalyticala Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: W. Lewis St., Greensboro, NC
Sample Description/Location:
Work Order: 23JO188
Date Received: 9/29/2023
Sub Description/Location:
Initial Vacuum(in Hg): -28
Field Sample #: IA-2
Canister ID: 1067
Final Vacuum(in Hg): -6.0
Sample ID: 23JO188-02
Canister Size: 6 liter
Receipt Vacuum(in Hg): -7.7
Sample Matrix: Indoor air
Flow Controller ID: 3330
Flow Controller Type: Fixed -Orifice
Sampled: 9/25/2023 16:00
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
29
1.4
0.33
68
3.3
0.78
0.698
10/4/23 0:33
CMR
Benzene
0.14
0.035
0.011
0.43
0.11
0.034
0.698
10/4/23 0:33
CMR
Benzyl chloride
ND
0.035
0.019
ND
0.18
0.097
0.698
10/4/23 0:33
CMR
Bromodichloromethane
0.027
0.035
0.0095
J
0.18
0.23
0.063
0.698
10/4/23 0:33
CMR
Bromoform
ND
0.035
0.012
ND
0.36
0.13
0.698
10/4/23 0:33
CMR
Bromomethane
ND
0.035
0.019
ND
0.14
0.072
0.698
10/4/23 0:33
CMR
1,3-Butadiene
ND
0.035
0.029
ND
0.077
0.065
0.698
10/4/23 0:33
CMR
2-Butanone (MEK)
0.96
1.4
0.39
J
2.8
4.1
1.2
0.698
10/4/23 0:33
CMR
Carbon Disulfide
ND
0.35
0.067
ND
1.1
0.21
0.698
10/4/23 0:33
CMR
Carbon Tetrachloride
0.082
0.035
0.010
V-05
0.52
0.22
0.063
0.698
10/4/23 0:33
CMR
Chlorobenzene
ND
0.035
0.0088
ND
0.16
0.040
0.698
10/4/23 0:33
CMR
Chloroethane
ND
0.035
0.022
ND
0.092
0.058
0.698
10/4/23 0:33
CMR
Chloroform
0.16
0.035
0.0091
0.80
0.17
0.044
0.698
10/4/23 0:33
CMR
Chloromethane
0.45
0.070
0.014
0.93
0.14
0.029
0.698
10/4/23 0:33
CMR
Cyclohexane
0.036
0.035
0.015
0.12
0.12
0.053
0.698
10/4/23 0:33
CMR
Dibromochloromethane
0.014
0.035
0.0094
J
0.12
0.30
0.080
0.698
10/4/23 0:33
CMR
1,2-Dibromoethane (EDB)
ND
0.035
0.012
ND
0.27
0.089
0.698
10/4/23 0:33
CMR
1,2-Dichlorobenzene
ND
0.035
0.012
ND
0.21
0.073
0.698
10/4/23 0:33
CMR
1,3-Dichlorobenzene
ND
0.035
0.013
ND
0.21
0.078
0.698
10/4/23 0:33
CMR
1,4-Dichlorobenzene
0.052
0.035
0.013
0.31
0.21
0.077
0.698
10/4/23 0:33
CMR
Dichlorodifluoromethane (Freon 12)
0.48
0.035
0.015
B
2.4
0.17
0.072
0.698
10/4/23 0:33
CMR
1,1-Dichloroethane
ND
0.035
0.011
ND
0.14
0.045
0.698
10/4/23 0:33
CMR
1,2-Dichloroethane
0.030
0.035
0.013
J
0.12
0.14
0.053
0.698
10/4/23 0:33
CMR
1,1-Dichloroethylene
ND
0.035
0.010
ND
0.14
0.039
0.698
10/4/23 0:33
CMR
cis-1,2-Dichloroethylene
0.024
0.035
0.011
J
0.094
0.14
0.043
0.698
10/4/23 0:33
CMR
trans-1,2-Dichloroethylene
0.024
0.035
0.011
J
0.094
0.14
0.045
0.698
10/4/23 0:33
CMR
1,2-Dichloropropane
0.015
0.035
0.0096
J
0.068
0.16
0.044
0.698
10/4/23 0:33
CMR
cis- 1,3 -Dichloropropene
ND
0.035
0.016
ND
0.16
0.071
0.698
10/4/23 0:33
CMR
trans- 1, 3 -Dichloropropene
ND
0.035
0.018
ND
0.16
0.082
0.698
10/4/23 0:33
CMR
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)
0.022
0.035
0.014
J
0.16
0.24
0.098
0.698
10/4/23 0:33
CMR
1,4-Dioxane
ND
0.35
0.17
ND
1.3
0.62
0.698
10/4/23 0:33
CMR
Ethanol
2000
40
27
E
3700
75
50
20
10/3/23 23:59
CMR
Ethyl Acetate
1.5
0.35
0.10
5.3
1.3
0.36
0.698
10/4/23 0:33
CMR
Ethylbenzene
0.10
0.035
0.010
0.45
0.15
0.044
0.698
10/4/23 0:33
CMR
4-Ethyltoluene
0.025
0.035
0.015
J
0.12
0.17
0.075
0.698
10/4/23 0:33
CMR
Heptane
0.085
0.035
0.022
0.35
0.14
0.090
0.698
10/4/23 0:33
CMR
Hexachlorobutadiene
ND
0.035
0.020
ND
0.37
0.21
0.698
10/4/23 0:33
CMR
Hexane
ND
1.4
0.46
ND
4.9
1.6
0.698
10/4/23 0:33
CMR
2-Hexanone (MBK)
0.060
0.035
0.015
0.25
0.14
0.062
0.698
10/4/23 0:33
CMR
Isopropanol
20
1.4
0.44
48
3.4
1.1
0.698
10/4/23 0:33
CMR
Methyl tert-Butyl Ether (MTBE)
0.020
0.035
0.017
J
0.073
0.13
0.062
0.698
10/4/23 0:33
CMR
Methylene Chloride
0.12
0.35
0.094
J
0.42
1.2
0.33
0.698
10/4/23 0:33
CMR
4-Methyl-2-pentanone (MIBK)
ND
0.035
0.018
ND
0.14
0.076
0.698
10/4/23 0:33
CMR
Naphthalene
0.064
0.035
0.023
0.34
0.18
0.12
0.698
10/4/23 0:33
CMR
Propene
ND
1.4
0.38
ND
2.4
0.65
0.698
10/4/23 0:33
CMR
Styrene
0.28
0.035
0.019
1.2
0.15
0.080
0.698
10/4/23 0:33
CMR
1,1,2,2-Tetrachloroethane
ND
0.035
0.0086
ND
0.24
0.059
0.698
10/4/23 0:33
CMR
Page 6 of 33

Con -testa
A Pace Aaalyticala Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: W. Lewis St., Greensboro, NC
Sample Description/Location:
Work Order: 23JO188
Date Received: 9/29/2023
Sub Description/Location:
Initial Vacuum(in Hg): -28
Field Sample #: IA-2
Canister ID: 1067
Final Vacuum(in Hg): -6.0
Sample ID: 23JO188-02
Canister Size: 6 liter
Receipt Vacuum(in Hg): -7.7
Sample Matrix: Indoor air
Flow Controller ID: 3330
Flow Controller Type: Fixed -Orifice
Sampled: 9/25/2023 16:00
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
RI
MDL
Dilution
Analyzed
Analyst
Tetrachloroethylene
0.29
0.035
0.013
2.0
0.24
0.089
0.698
10/4/23 0:33
CMR
Tetrahydrofuran
2.0
0.35
0.072
5.9
1.0
0.21
0.698
10/4/23 0:33
CMR
Toluene
0.50
0.035
0.013
1.9
0.13
0.048
0.698
10/4/23 0:33
CMR
1,2,4-Trichlorobenzene
ND
0.035
0.019
ND
0.26
0.14
0.698
10/4/23 0:33
CMR
1, 1, 1 -Trichloroethane
ND
0.035
0.011
ND
0.19
0.059
0.698
10/4/23 0:33
CMR
1,1,2-Trichloroethane
0.013
0.035
0.0089
J 0.069
0.19
0.049
0.698
10/4/23 0:33
CMR
Trichloroethylene
0.038
0.035
0.014
0.20
0.19
0.076
0.698
10/4/23 0:33
CMR
Trichlorofluoromethane (Freon 11)
0.22
0.14
0.014
1.2
0.78
0.080
0.698
10/4/23 0:33
CMR
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
0.069
0.14
0.0077
J 0.53
1.1
0.059
0.698
10/4/23 0:33
CMR
1,2,4-Trimethylbenzene
0.11
0.035
0.016
0.52
0.17
0.079
0.698
10/4/23 0:33
CMR
1,3,5-Trimethylbenzene
0.038
0.035
0.018
0.19
0.17
0.088
0.698
10/4/23 0:33
CMR
Vinyl Acetate
0.66
0.70
0.12
J 2.3
2.5
0.44
0.698
10/4/23 0:33
CMR
Vinyl Chloride
ND
0.035
0.016
ND
0.089
0.041
0.698
10/4/23 0:33
CMR
m&p-Xylene
0.25
0.070
0.024
1.1
0.30
0.11
0.698
10/4/23 0:33
CMR
o-Xylene
0.10
0.035
0.013
0.45
0.15
0.055
0.698
10/4/23 0:33
CMR
Surrogates
% Recovery
% REC Limits
4-Bromofluorobenzene (1)
92.3
70-130
10/3/23 23:59
4-Bromofluorobenzene (1)
100
70-130
10/4/23 0:33
Page 7 of 33

Con -testa
A Face Aaalyticala Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: W. Lewis St., Greensboro, NC
Sample Description/Location:
Work Order: 23JO188
Date Received: 9/29/2023
Sub Description/Location:
Initial Vacuum(in Hg): -29
Field Sample #: IA-3
Canister ID: 1047
Final Vacuum(in Hg): -6.5
Sample ID: 23JO188-03
Canister Size: 6 liter
Receipt Vacuum(in Hg): -7.0
Sample Matrix: Indoor air
Flow Controller ID: 3406
Flow Controller Type: Fixed -Orifice
Sampled: 9/25/2023 16:05
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
0.33
74
3.3
0.78
0.698
10/4/23
1:32
CMR
Benzene
0.13
0.035
0.011
0.40
0.11
0.034
0.698
10/4/23
1:32
CMR
Benzyl chloride
ND
0.035
0.019
ND
0.18
0.097
0.698
10/4/23
1:32
CMR
Bromodichloromethane
0.027
0.035
0.0095
J
0.18
0.23
0.063
0.698
10/4/23
1:32
CMR
Bromoform
ND
0.035
0.012
ND
0.36
0.13
0.698
10/4/23
1:32
CMR
Bromomethane
ND
0.035
0.019
ND
0.14
0.072
0.698
10/4/23
1:32
CMR
1,3-Butadiene
ND
0.035
0.029
ND
0.077
0.065
0.698
10/4/23
1:32
CMR
2-Butanone (MEK)
1.0
1.4
0.39
J
3.1
4.1
1.2
0.698
10/4/23
1:32
CMR
Carbon Disulfide
ND
0.35
0.067
ND
1.1
0.21
0.698
10/4/23
1:32
CMR
Carbon Tetrachloride
0.083
0.035
0.010
V-05
0.52
0.22
0.063
0.698
10/4/23
1:32
CMR
Chlorobenzene
ND
0.035
0.0088
ND
0.16
0.040
0.698
10/4/23
1:32
CMR
Chloroethane
ND
0.035
0.022
ND
0.092
0.058
0.698
10/4/23
1:32
CMR
Chloroform
0.17
0.035
0.0091
0.83
0.17
0.044
0.698
10/4/23
1:32
CMR
Chloromethane
0.46
0.070
0.014
0.96
0.14
0.029
0.698
10/4/23
1:32
CMR
Cyclohexane
0.040
0.035
0.015
0.14
0.12
0.053
0.698
10/4/23
1:32
CMR
Dibromochloromethane
0.012
0.035
0.0094
J
0.10
0.30
0.080
0.698
10/4/23
1:32
CMR
1,2-Dibromoethane (EDB)
ND
0.035
0.012
ND
0.27
0.089
0.698
10/4/23
1:32
CMR
1,2-Dichlorobenzene
ND
0.035
0.012
ND
0.21
0.073
0.698
10/4/23
1:32
CMR
1,3-Dichlorobenzene
ND
0.035
0.013
ND
0.21
0.078
0.698
10/4/23
1:32
CMR
1,4-Dichlorobenzene
0.047
0.035
0.013
0.28
0.21
0.077
0.698
10/4/23
1:32
CMR
Dichlorodifluoromethane (Freon 12)
0.43
0.035
0.015
B
2.1
0.17
0.072
0.698
10/4/23
1:32
CMR
1,1-Dichloroethane
ND
0.035
0.011
ND
0.14
0.045
0.698
10/4/23
1:32
CMR
1,2-Dichloroethane
ND
0.035
0.013
ND
0.14
0.053
0.698
10/4/23
1:32
CMR
1,1-Dichloroethylene
0.018
0.035
0.010
J
0.072
0.14
0.039
0.698
10/4/23
1:32
CMR
cis-1,2-Dichloroethylene
0.021
0.035
0.011
J
0.083
0.14
0.043
0.698
10/4/23
1:32
CMR
trans-1,2-Dichloroethylene
0.017
0.035
0.011
J
0.069
0.14
0.045
0.698
10/4/23
1:32
CMR
1,2-Dichloropropane
0.010
0.035
0.0096
J
0.048
0.16
0.044
0.698
10/4/23
1:32
CMR
cis- 1,3 -Dichloropropene
ND
0.035
0.016
ND
0.16
0.071
0.698
10/4/23
1:32
CMR
trans- 1, 3 -Dichloropropene
ND
0.035
0.018
ND
0.16
0.082
0.698
10/4/23
1:32
CMR
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)
0.020
0.035
0.014
J
0.14
0.24
0.098
0.698
10/4/23
1:32
CMR
1,4-Dioxane
ND
0.35
0.17
ND
1.3
0.62
0.698
10/4/23
1:32
CMR
Ethanol
1700
40
27
E
3200
75
50
20
10/4/23
0:59
CMR
Ethyl Acetate
1.1
0.35
0.10
3.8
1.3
0.36
0.698
10/4/23
1:32
CMR
Ethylbenzene
0.10
0.035
0.010
0.43
0.15
0.044
0.698
10/4/23
1:32
CMR
4-Ethyltoluene
0.029
0.035
0.015
J
0.14
0.17
0.075
0.698
10/4/23
1:32
CMR
Heptane
0.098
0.035
0.022
0.40
0.14
0.090
0.698
10/4/23
1:32
CMR
Hexachlorobutadiene
ND
0.035
0.020
ND
0.37
0.21
0.698
10/4/23
1:32
CMR
Hexane
ND
1.4
0.46
ND
4.9
1.6
0.698
10/4/23
1:32
CMR
2-Hexanone (MBK)
0.074
0.035
0.015
0.30
0.14
0.062
0.698
10/4/23
1:32
CMR
Isopropanol
15
1.4
0.44
38
3.4
1.1
0.698
10/4/23
1:32
CMR
Methyl tert-Butyl Ether (MTBE)
0.030
0.035
0.017
J
0.11
0.13
0.062
0.698
10/4/23
1:32
CMR
Methylene Chloride
0.10
0.35
0.094
J
0.35
1.2
0.33
0.698
10/4/23
1:32
CMR
4-Methyl-2-pentanone (MIBK)
ND
0.035
0.018
ND
0.14
0.076
0.698
10/4/23
1:32
CMR
Naphthalene
0.060
0.035
0.023
0.31
0.18
0.12
0.698
10/4/23
1:32
CMR
Propene
ND
1.4
0.38
ND
2.4
0.65
0.698
10/4/23
1:32
CMR
Styrene
0.24
0.035
0.019
1.0
0.15
0.080
0.698
10/4/23
1:32
CMR
1,1,2,2-Tetrachloroethane
ND
0.035
0.0086
ND
0.24
0.059
0.698
10/4/23
1:32
CMR
Page 8 of 33

Con -testa
A Pace Aaalyticala Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: W. Lewis St., Greensboro, NC
Sample Description/Location:
Work Order: 23JO188
Date Received: 9/29/2023
Sub Description/Location:
Initial Vacuum(in Hg): -29
Field Sample #: IA-3
Canister ID: 1047
Final Vacuum(in Hg): -6.5
Sample ID: 23JO188-03
Canister Size: 6 liter
Receipt Vacuum(in Hg): -7.0
Sample Matrix: Indoor air
Flow Controller ID: 3406
Flow Controller Type: Fixed -Orifice
Sampled: 9/25/2023 16:05
Sample Type: 8 hr
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv
ug/m3
Date/Time
Analyte
Results
RL
MDL
Flag/Qual Results
RL
MDL
Dilution
Analyzed
Analyst
Tetrachloroethylene
0.24
0.035
0.013
1.6
0.24
0.089
0.698
10/4/23
1:32
CMR
Tetrahydroforan
4.3
0.35
0.072
13
1.0
0.21
0.698
10/4/23
1:32
CMR
Toluene
0.45
0.035
0.013
1.7
0.13
0.048
0.698
10/4/23
1:32
CMR
1,2,4-Trichlorobenzene
ND
0.035
0.019
ND
0.26
0.14
0.698
10/4/23
1:32
CMR
1, 1, 1 -Trichloroethane
ND
0.035
0.011
ND
0.19
0.059
0.698
10/4/23
1:32
CMR
1,1,2-Trichloroethane
0.010
0.035
0.0089
J 0.057
0.19
0.049
0.698
10/4/23
1:32
CMR
Trichloroethylene
0.040
0.035
0.014
0.21
0.19
0.076
0.698
10/4/23
1:32
CMR
Trichlorofluoromethane (Freon 11)
0.22
0.14
0.014
1.2
0.78
0.080
0.698
10/4/23
1:32
CMR
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
0.071
0.14
0.0077
J 0.55
1.1
0.059
0.698
10/4/23
1:32
CMR
1,2,4-Trimethylbenzene
0.085
0.035
0.016
0.42
0.17
0.079
0.698
10/4/23
1:32
CMR
1,3,5-Trimethylbenzene
0.033
0.035
0.018
J 0.16
0.17
0.088
0.698
10/4/23
1:32
CMR
Vinyl Acetate
0.80
0.70
0.12
2.8
2.5
0.44
0.698
10/4/23
1:32
CMR
Vinyl Chloride
ND
0.035
0.016
ND
0.089
0.041
0.698
10/4/23
1:32
CMR
m&p-Xylene
0.27
0.070
0.024
1.2
0.30
0.11
0.698
10/4/23
1:32
CMR
o-Xylene
0.11
0.035
0.013
0.47
0.15
0.055
0.698
10/4/23
1:32
CMR
Surrogates
% Recovery
% REC Limits
4-Bromofluorobenzene (1)
90.1
70-130
10/4/23 0:59
4-Bromofluorobenzene (1)
98.4
70-130
10/4/23
1:32
Page 9 of 33

Con -testa
A Face Aaalyticala Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: W. Lewis St., Greensboro, NC
Sample Description/Location:
Work Order: 23JO188
Date Received: 9/29/2023
Sub Description/Location:
Initial Vacuum(in Hg): -29
Field Sample #: IA-3 DUP
Canister ID: 2071
Final Vacuum(in Hg): -6.5
Sample ID: 23JO188-04
Canister Size: 6 liter
Receipt Vacuum(in Hg): -7.0
Sample Matrix: Indoor air
Flow Controller ID: 3406
Flow Controller Type: Fixed -Orifice
Sampled: 9/25/2023 16:05
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
0.33
77
3.3
0.78
0.698
10/4/23 2:33
CMR
Benzene
0.13
0.035
0.011
0.40
0.11
0.034
0.698
10/4/23 2:33
CMR
Benzyl chloride
ND
0.035
0.019
ND
0.18
0.097
0.698
10/4/23 2:33
CMR
Bromodichloromethane
0.021
0.035
0.0095
J
0.14
0.23
0.063
0.698
10/4/23 2:33
CMR
Bromoform
ND
0.035
0.012
ND
0.36
0.13
0.698
10/4/23 2:33
CMR
Bromomethane
ND
0.035
0.019
ND
0.14
0.072
0.698
10/4/23 2:33
CMR
1,3-Butadiene
ND
0.035
0.029
ND
0.077
0.065
0.698
10/4/23 2:33
CMR
2-Butanone (MEK)
0.98
1.4
0.39
J
2.9
4.1
1.2
0.698
10/4/23 2:33
CMR
Carbon Disulfide
ND
0.35
0.067
ND
1.1
0.21
0.698
10/4/23 2:33
CMR
Carbon Tetrachloride
0.080
0.035
0.010
V-05
0.50
0.22
0.063
0.698
10/4/23 2:33
CMR
Chlorobenzene
ND
0.035
0.0088
ND
0.16
0.040
0.698
10/4/23 2:33
CMR
Chloroethane
ND
0.035
0.022
ND
0.092
0.058
0.698
10/4/23 2:33
CMR
Chloroform
0.18
0.035
0.0091
0.89
0.17
0.044
0.698
10/4/23 2:33
CMR
Chloromethane
0.48
0.070
0.014
0.98
0.14
0.029
0.698
10/4/23 2:33
CMR
Cyclohexane
0.043
0.035
0.015
0.15
0.12
0.053
0.698
10/4/23 2:33
CMR
Dibromochloromethane
ND
0.035
0.0094
ND
0.30
0.080
0.698
10/4/23 2:33
CMR
1,2-Dibromoethane (EDB)
ND
0.035
0.012
ND
0.27
0.089
0.698
10/4/23 2:33
CMR
1,2-Dichlorobenzene
ND
0.035
0.012
ND
0.21
0.073
0.698
10/4/23 2:33
CMR
1,3-Dichlorobenzene
ND
0.035
0.013
ND
0.21
0.078
0.698
10/4/23 2:33
CMR
1,4-Dichlorobenzene
0.050
0.035
0.013
0.30
0.21
0.077
0.698
10/4/23 2:33
CMR
Dichlorodifluoromethane (Freon 12)
0.44
0.035
0.015
B
2.2
0.17
0.072
0.698
10/4/23 2:33
CMR
1,1-Dichloroethane
ND
0.035
0.011
ND
0.14
0.045
0.698
10/4/23 2:33
CMR
1,2-Dichloroethane
0.022
0.035
0.013
J
0.088
0.14
0.053
0.698
10/4/23 2:33
CMR
1,1-Dichloroethylene
ND
0.035
0.010
ND
0.14
0.039
0.698
10/4/23 2:33
CMR
cis-1,2-Dichloroethylene
0.017
0.035
0.011
J
0.066
0.14
0.043
0.698
10/4/23 2:33
CMR
trans-1,2-Dichloroethylene
0.017
0.035
0.011
J
0.066
0.14
0.045
0.698
10/4/23 2:33
CMR
1,2-Dichloropropane
0.014
0.035
0.0096
J
0.064
0.16
0.044
0.698
10/4/23 2:33
CMR
cis- 1,3 -Dichloropropene
ND
0.035
0.016
ND
0.16
0.071
0.698
10/4/23 2:33
CMR
trans- 1, 3 -Dichloropropene
ND
0.035
0.018
ND
0.16
0.082
0.698
10/4/23 2:33
CMR
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)
0.024
0.035
0.014
J
0.17
0.24
0.098
0.698
10/4/23 2:33
CMR
1,4-Dioxane
ND
0.35
0.17
ND
1.3
0.62
0.698
10/4/23 2:33
CMR
Ethanol
1600
40
27
E
3100
75
50
20
10/4/23 1:59
CMR
Ethyl Acetate
1.1
0.35
0.10
3.8
1.3
0.36
0.698
10/4/23 2:33
CMR
Ethylbenzene
0.10
0.035
0.010
0.44
0.15
0.044
0.698
10/4/23 2:33
CMR
4-Ethyltoluene
ND
0.035
0.015
ND
0.17
0.075
0.698
10/4/23 2:33
CMR
Heptane
0.12
0.035
0.022
0.49
0.14
0.090
0.698
10/4/23 2:33
CMR
Hexachlorobutadiene
ND
0.035
0.020
ND
0.37
0.21
0.698
10/4/23 2:33
CMR
Hexane
ND
1.4
0.46
ND
4.9
1.6
0.698
10/4/23 2:33
CMR
2-Hexanone (MBK)
0.040
0.035
0.015
0.16
0.14
0.062
0.698
10/4/23 2:33
CMR
Isopropanol
16
1.4
0.44
40
3.4
1.1
0.698
10/4/23 2:33
CMR
Methyl tert-Butyl Ether (MTBE)
0.036
0.035
0.017
0.13
0.13
0.062
0.698
10/4/23 2:33
CMR
Methylene Chloride
0.11
0.35
0.094
J
0.37
1.2
0.33
0.698
10/4/23 2:33
CMR
4-Methyl-2-pentanone (MIBK)
ND
0.035
0.018
ND
0.14
0.076
0.698
10/4/23 2:33
CMR
Naphthalene
0.064
0.035
0.023
0.34
0.18
0.12
0.698
10/4/23 2:33
CMR
Propene
ND
1.4
0.38
ND
2.4
0.65
0.698
10/4/23 2:33
CMR
Styrene
0.25
0.035
0.019
1.1
0.15
0.080
0.698
10/4/23 2:33
CMR
1,1,2,2-Tetrachloroethane
ND
0.035
0.0086
ND
0.24
0.059
0.698
10/4/23 2:33
CMR
Page 10 of 33

Con -testa
A Face Aaalyticaia Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
Project Location: W. Lewis St., Greensboro, NC
Date Received: 9/29/2023
Field Sample #: IA-3 DUP
Sample ID: 23JO188-04
Sample Matrix: Indoor air
Sampled: 9/25/2023 16:05
ANALYTICAL RESULTS
Sample Description/Location:
Sub Description/Location:
Canister ID: 2071
Canister Size: 6 liter
Flow Controller ID: 3406
Sample Type: 8 hr
Work Order: 23JO188
Initial Vacuum(in Hg): -29
Final Vacuum(in Hg): -6.5
Receipt Vacuum(in Hg): -7.0
Flow Controller Type: Fixed -Orifice
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv ug/m3 Date/Time
Analyte Results RL MDL Flag/Qual Results RL MDL Dilution Analyzed Analyst
Tetrachloroethylene
0.28
0.035
0.013
1.9
0.24
0.089
0.698
10/4/23 2:33
CMR
Tetrahydrofuran
3.2
0.35
0.072
9.5
1.0
0.21
0.698
10/4/23 2:33
CMR
Toluene
0.46
0.035
0.013
1.7
0.13
0.048
0.698
10/4/23 2:33
CMR
1,2,4-Trichlorobenzene
ND
0.035
0.019
ND
0.26
0.14
0.698
10/4/23 2:33
CMR
1, 1, 1 -Trichloroethane
ND
0.035
0.011
ND
0.19
0.059
0.698
10/4/23 2:33
CMR
1,1,2-Trichloroethane
ND
0.035
0.0089
ND
0.19
0.049
0.698
10/4/23 2:33
CMR
Trichloroethylene
0.034
0.035
0.014
J
0.18
0.19
0.076
0.698
10/4/23 2:33
CMR
Trichlorofluoromethane (Freon 11)
0.22
0.14
0.014
1.2
0.78
0.080
0.698
10/4/23 2:33
CMR
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
0.077
0.14
0.0077
J
0.59
1.1
0.059
0.698
10/4/23 2:33
CMR
1,2,4-Trimethylbenzene
0.086
0.035
0.016
0.42
0.17
0.079
0.698
10/4/23 2:33
CMR
1,3,5-Trimethylbenzene
0.031
0.035
0.018
J
0.15
0.17
0.088
0.698
10/4/23 2:33
CMR
Vinyl Acetate
0.57
0.70
0.12
J
2.0
2.5
0.44
0.698
10/4/23 2:33
CMR
Vinyl Chloride
ND
0.035
0.016
ND
0.089
0.041
0.698
10/4/23 2:33
CMR
m&p-Xylene
0.27
0.070
0.024
1.2
0.30
0.11
0.698
10/4/23 2:33
CMR
o-Xylene
0.11
0.035
0.013
0.46
0.15
0.055
0.698
10/4/23 2:33
CMR
Surrogates
4-Bromofluorobenzene (1)
4-Bromofluorobenzene (1)
% Recovery
% REC Limits
98.9 70-130
92.0 70-130
10/4/23 2:33
10/4/23 1:59
Page 11 of 33

Con -testa
A Face Aaalyticala Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: W. Lewis St., Greensboro, NC
Sample Description/Location:
Work Order: 23JO188
Date Received: 9/29/2023
Sub Description/Location:
Initial Vacuum(in Hg): -28.5
Field Sample #: IA-4
Canister ID: 1165
Final Vacuum(in Hg): -8.0
Sample ID: 23JO188-05
Canister Size: 6 liter
Receipt Vacuum(in Hg): -8.3
Sample Matrix: Indoor air
Flow Controller ID: 3160
Flow Controller Type: Fixed -Orifice
Sampled: 9/25/2023 16:45
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
19
1.4
0.33
44
3.3
0.78
0.698
10/4/23 3:32
CMR
Benzene
0.15
0.035
0.011
0.48
0.11
0.034
0.698
10/4/23 3:32
CMR
Benzyl chloride
ND
0.035
0.019
ND
0.18
0.097
0.698
10/4/23 3:32
CMR
Bromodichloromethane
ND
0.035
0.0095
ND
0.23
0.063
0.698
10/4/23 3:32
CMR
Bromoform
ND
0.035
0.012
ND
0.36
0.13
0.698
10/4/23 3:32
CMR
Bromomethane
ND
0.035
0.019
ND
0.14
0.072
0.698
10/4/23 3:32
CMR
1,3-Butadiene
ND
0.035
0.029
ND
0.077
0.065
0.698
10/4/23 3:32
CMR
2-Butanone (MEK)
0.77
1.4
0.39
J
2.3
4.1
1.2
0.698
10/4/23 3:32
CMR
Carbon Disulfide
ND
0.35
0.067
ND
1.1
0.21
0.698
10/4/23 3:32
CMR
Carbon Tetrachloride
0.073
0.035
0.010
V-05
0.46
0.22
0.063
0.698
10/4/23 3:32
CMR
Chlorobenzene
ND
0.035
0.0088
ND
0.16
0.040
0.698
10/4/23 3:32
CMR
Chloroethane
ND
0.035
0.022
ND
0.092
0.058
0.698
10/4/23 3:32
CMR
Chloroform
0.064
0.035
0.0091
0.31
0.17
0.044
0.698
10/4/23 3:32
CMR
Chloromethane
0.51
0.070
0.014
1.1
0.14
0.029
0.698
10/4/23 3:32
CMR
Cyclohexane
0.054
0.035
0.015
0.18
0.12
0.053
0.698
10/4/23 3:32
CMR
Dibromochloromethane
ND
0.035
0.0094
ND
0.30
0.080
0.698
10/4/23 3:32
CMR
1,2-Dibromoethane (EDB)
ND
0.035
0.012
ND
0.27
0.089
0.698
10/4/23 3:32
CMR
1,2-Dichlorobenzene
ND
0.035
0.012
ND
0.21
0.073
0.698
10/4/23 3:32
CMR
1,3-Dichlorobenzene
ND
0.035
0.013
ND
0.21
0.078
0.698
10/4/23 3:32
CMR
1,4-Dichlorobenzene
0.017
0.035
0.013
J
0.10
0.21
0.077
0.698
10/4/23 3:32
CMR
Dichlorodifluoromethane (Freon 12)
0.45
0.035
0.015
B
2.2
0.17
0.072
0.698
10/4/23 3:32
CMR
1,1-Dichloroethane
ND
0.035
0.011
ND
0.14
0.045
0.698
10/4/23 3:32
CMR
1,2-Dichloroethane
0.020
0.035
0.013
J
0.082
0.14
0.053
0.698
10/4/23 3:32
CMR
1,1-Dichloroethylene
0.017
0.035
0.010
J
0.069
0.14
0.039
0.698
10/4/23 3:32
CMR
cis-1,2-Dichloroethylene
ND
0.035
0.011
ND
0.14
0.043
0.698
10/4/23 3:32
CMR
trans-1,2-Dichloroethylene
ND
0.035
0.011
ND
0.14
0.045
0.698
10/4/23 3:32
CMR
1,2-Dichloropropane
ND
0.035
0.0096
ND
0.16
0.044
0.698
10/4/23 3:32
CMR
cis- 1,3 -Dichloropropene
ND
0.035
0.016
ND
0.16
0.071
0.698
10/4/23 3:32
CMR
trans- 1, 3 -Dichloropropene
ND
0.035
0.018
ND
0.16
0.082
0.698
10/4/23 3:32
CMR
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)
0.019
0.035
0.014
J
0.13
0.24
0.098
0.698
10/4/23 3:32
CMR
1,4-Dioxane
ND
0.35
0.17
ND
1.3
0.62
0.698
10/4/23 3:32
CMR
Ethanol
1100
40
27
E
2100
75
50
20
10/4/23 2:59
CMR
Ethyl Acetate
0.89
0.35
0.10
3.2
1.3
0.36
0.698
10/4/23 3:32
CMR
Ethylbenzene
0.099
0.035
0.010
0.43
0.15
0.044
0.698
10/4/23 3:32
CMR
4-Ethyltoluene
0.026
0.035
0.015
J
0.13
0.17
0.075
0.698
10/4/23 3:32
CMR
Heptane
0.11
0.035
0.022
0.46
0.14
0.090
0.698
10/4/23 3:32
CMR
Hexachlorobutadiene
ND
0.035
0.020
ND
0.37
0.21
0.698
10/4/23 3:32
CMR
Hexane
ND
1.4
0.46
ND
4.9
1.6
0.698
10/4/23 3:32
CMR
2-Hexanone (MBK)
0.16
0.035
0.015
0.67
0.14
0.062
0.698
10/4/23 3:32
CMR
Isopropanol
5.0
1.4
0.44
12
3.4
1.1
0.698
10/4/23 3:32
CMR
Methyl tert-Butyl Ether (MTBE)
0.022
0.035
0.017
J
0.080
0.13
0.062
0.698
10/4/23 3:32
CMR
Methylene Chloride
0.14
0.35
0.094
J
0.47
1.2
0.33
0.698
10/4/23 3:32
CMR
4-Methyl-2-pentanone (MIBK)
0.34
0.035
0.018
1.4
0.14
0.076
0.698
10/4/23 3:32
CMR
Naphthalene
0.89
0.035
0.023
4.6
0.18
0.12
0.698
10/4/23 3:32
CMR
Propene
ND
1.4
0.38
ND
2.4
0.65
0.698
10/4/23 3:32
CMR
Styrene
0.11
0.035
0.019
0.46
0.15
0.080
0.698
10/4/23 3:32
CMR
1,1,2,2-Tetrachloroethane
ND
0.035
0.0086
ND
0.24
0.059
0.698
10/4/23 3:32
CMR
Page 12 of 33

Con -testa
A Face Aaalyticaia Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
Project Location: W. Lewis St., Greensboro, NC
Date Received: 9/29/2023
Field Sample #: IA-4
Sample ID: 23JO188-05
Sample Matrix: Indoor air
Sampled: 9/25/2023 16:45
ANALYTICAL RESULTS
Sample Description/Location:
Sub Description/Location:
Canister ID: 1165
Canister Size: 6 liter
Flow Controller ID: 3160
Sample Type: 8 hr
Work Order: 23JO188
Initial Vacuum(in Hg): -28.5
Final Vacuum(in Hg): -8.0
Receipt Vacuum(in Hg): -8.3
Flow Controller Type: Fixed -Orifice
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv ug/m3 Date/Time
Analyte Results RL MDL Flag/Qual Results RL MDL Dilution Analyzed Analyst
Tetrachloroethylene
0.023
0.035
0.013 J
0.16
0.24
0.089
0.698
10/4/23 3:32
CMR
Tetrahydrofuran
0.22
0.35
0.072 J
0.65
1.0
0.21
0.698
10/4/23 3:32
CMR
Toluene
0.54
0.035
0.013
2.0
0.13
0.048
0.698
10/4/23 3:32
CMR
1,2,4-Trichlorobenzene
ND
0.035
0.019
ND
0.26
0.14
0.698
10/4/23 3:32
CMR
1, 1, 1 -Trichloroethane
ND
0.035
0.011
ND
0.19
0.059
0.698
10/4/23 3:32
CMR
1,1,2-Trichloroethane
ND
0.035
0.0089
ND
0.19
0.049
0.698
10/4/23 3:32
CMR
Trichloroethylene
ND
0.035
0.014
ND
0.19
0.076
0.698
10/4/23 3:32
CMR
Trichlorofluoromethane (Freon 11)
0.21
0.14
0.014
1.2
0.78
0.080
0.698
10/4/23 3:32
CMR
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
0.066
0.14
0.0077 J
0.50
1.1
0.059
0.698
10/4/23 3:32
CMR
1,2,4-Trimethylbenzene
0.092
0.035
0.016
0.45
0.17
0.079
0.698
10/4/23 3:32
CMR
1,3,5-Trimethylbenzene
0.035
0.035
0.018
0.17
0.17
0.088
0.698
10/4/23 3:32
CMR
Vinyl Acetate
0.92
0.70
0.12
3.2
2.5
0.44
0.698
10/4/23 3:32
CMR
Vinyl Chloride
ND
0.035
0.016
ND
0.089
0.041
0.698
10/4/23 3:32
CMR
m&p-Xylene
0.25
0.070
0.024
1.1
0.30
0.11
0.698
10/4/23 3:32
CMR
o-Xylene
0.12
0.035
0.013
0.52
0.15
0.055
0.698
10/4/23 3:32
CMR
Surrogates
4-Bromofluorobenzene (1)
4-Bromofluorobenzene (1)
% Recovery
% REC Limits
91.5 70-130
98.8 70-130
10/4/23 2:59
10/4/23 3:32
Page 13 of 33

Con -testa
A Face Aaalyticala Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: W. Lewis St., Greensboro, NC
Sample Description/Location:
Work Order: 23JO188
Date Received: 9/29/2023
Sub Description/Location:
Initial Vacuum(in Hg): -30
Field Sample #: IA-5
Canister ID: 1508
Final Vacuum(in Hg): -8.0
Sample ID: 23JO188-06
Canister Size: 6 liter
Receipt Vacuum(in Hg): -7.7
Sample Matrix: Indoor air
Flow Controller ID: 3085
Flow Controller Type: Fixed -Orifice
Sampled: 9/25/2023 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
RL
MDL
Dilution
Date/Time
Analyzed
Analyst
Acetone
23
1.4
0.33
55
3.3
0.78
0.698
10/4/23 4:32
CMR
Benzene
0.16
0.035
0.011
0.50
0.11
0.034
0.698
10/4/23 4:32
CMR
Benzyl chloride
ND
0.035
0.019
ND
0.18
0.097
0.698
10/4/23 4:32
CMR
Bromodichloromethane
ND
0.035
0.0095
ND
0.23
0.063
0.698
10/4/23 4:32
CMR
Bromoform
ND
0.035
0.012
ND
0.36
0.13
0.698
10/4/23 4:32
CMR
Bromomethane
ND
0.035
0.019
ND
0.14
0.072
0.698
10/4/23 4:32
CMR
1,3-Butadiene
ND
0.035
0.029
ND
0.077
0.065
0.698
10/4/23 4:32
CMR
2-Butanone (MEK)
1.3
1.4
0.39
J
3.8
4.1
1.2
0.698
10/4/23 4:32
CMR
Carbon Disulfide
ND
0.35
0.067
ND
1.1
0.21
0.698
10/4/23 4:32
CMR
Carbon Tetrachloride
0.078
0.035
0.010
V-05
0.49
0.22
0.063
0.698
10/4/23 4:32
CMR
Chlorobenzene
ND
0.035
0.0088
ND
0.16
0.040
0.698
10/4/23 4:32
CMR
Chloroethane
ND
0.035
0.022
ND
0.092
0.058
0.698
10/4/23 4:32
CMR
Chloroform
0.10
0.035
0.0091
0.50
0.17
0.044
0.698
10/4/23 4:32
CMR
Chloromethane
0.58
0.070
0.014
1.2
0.14
0.029
0.698
10/4/23 4:32
CMR
Cyclohexane
0.053
0.035
0.015
0.18
0.12
0.053
0.698
10/4/23 4:32
CMR
Dibromochloromethane
ND
0.035
0.0094
ND
0.30
0.080
0.698
10/4/23 4:32
CMR
1,2-Dibromoethane (EDB)
ND
0.035
0.012
ND
0.27
0.089
0.698
10/4/23 4:32
CMR
1,2-Dichlorobenzene
ND
0.035
0.012
ND
0.21
0.073
0.698
10/4/23 4:32
CMR
1,3-Dichlorobenzene
ND
0.035
0.013
ND
0.21
0.078
0.698
10/4/23 4:32
CMR
1,4-Dichlorobenzene
ND
0.035
0.013
ND
0.21
0.077
0.698
10/4/23 4:32
CMR
Dichlorodifluoromethane (Freon 12)
0.43
0.035
0.015
B
2.1
0.17
0.072
0.698
10/4/23 4:32
CMR
1,1-Dichloroethane
ND
0.035
0.011
ND
0.14
0.045
0.698
10/4/23 4:32
CMR
1,2-Dichloroethane
0.027
0.035
0.013
J
0.11
0.14
0.053
0.698
10/4/23 4:32
CMR
1,1-Dichloroethylene
ND
0.035
0.010
ND
0.14
0.039
0.698
10/4/23 4:32
CMR
cis-1,2-Dichloroethylene
ND
0.035
0.011
ND
0.14
0.043
0.698
10/4/23 4:32
CMR
trans-1,2-Dichloroethylene
0.022
0.035
0.011
J
0.089
0.14
0.045
0.698
10/4/23 4:32
CMR
1,2-Dichloropropane
ND
0.035
0.0096
ND
0.16
0.044
0.698
10/4/23 4:32
CMR
cis- 1,3 -Dichloropropene
ND
0.035
0.016
ND
0.16
0.071
0.698
10/4/23 4:32
CMR
trans- 1, 3 -Dichloropropene
ND
0.035
0.018
ND
0.16
0.082
0.698
10/4/23 4:32
CMR
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)
0.017
0.035
0.014
J
0.12
0.24
0.098
0.698
10/4/23 4:32
CMR
1,4-Dioxane
ND
0.35
0.17
ND
1.3
0.62
0.698
10/4/23 4:32
CMR
Ethanol
1200
40
27
E
2200
75
50
20
10/4/23 3:59
CMR
Ethyl Acetate
1.6
0.35
0.10
5.8
1.3
0.36
0.698
10/4/23 4:32
CMR
Ethylbenzene
0.10
0.035
0.010
0.44
0.15
0.044
0.698
10/4/23 4:32
CMR
4-Ethyltoluene
0.030
0.035
0.015
J
0.15
0.17
0.075
0.698
10/4/23 4:32
CMR
Heptane
0.12
0.035
0.022
0.50
0.14
0.090
0.698
10/4/23 4:32
CMR
Hexachlorobutadiene
ND
0.035
0.020
ND
0.37
0.21
0.698
10/4/23 4:32
CMR
Hexane
ND
1.4
0.46
ND
4.9
1.6
0.698
10/4/23 4:32
CMR
2-Hexanone (MBK)
0.24
0.035
0.015
0.99
0.14
0.062
0.698
10/4/23 4:32
CMR
Isopropanol
5.4
1.4
0.44
13
3.4
1.1
0.698
10/4/23 4:32
CMR
Methyl tert-Butyl Ether (MTBE)
0.025
0.035
0.017
J
0.091
0.13
0.062
0.698
10/4/23 4:32
CMR
Methylene Chloride
0.32
0.35
0.094
J
1.1
1.2
0.33
0.698
10/4/23 4:32
CMR
4-Methyl-2-pentanone (MIBK)
0.25
0.035
0.018
1.0
0.14
0.076
0.698
10/4/23 4:32
CMR
Naphthalene
2.0
0.035
0.023
11
0.18
0.12
0.698
10/4/23 4:32
CMR
Propene
ND
1.4
0.38
ND
2.4
0.65
0.698
10/4/23 4:32
CMR
Styrene
0.11
0.035
0.019
0.45
0.15
0.080
0.698
10/4/23 4:32
CMR
1,1,2,2-Tetrachloroethane
ND
0.035
0.0086
ND
0.24
0.059
0.698
10/4/23 4:32
CMR
Page 14 of 33

Con -testa
A Face Aaalyticaia Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
Project Location: W. Lewis St., Greensboro, NC
Date Received: 9/29/2023
Field Sample #: IA-5
Sample ID: 23JO188-06
Sample Matrix: Indoor air
Sampled: 9/25/2023 16:53
ANALYTICAL RESULTS
Sample Description/Location:
Sub Description/Location:
Canister ID: 1508
Canister Size: 6 liter
Flow Controller ID: 3085
Sample Type: 8 hr
Work Order: 23JO188
Initial Vacuum(in Hg): -30
Final Vacuum(in Hg): -8.0
Receipt Vacuum(in Hg): -7.7
Flow Controller Type: Fixed -Orifice
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv ug/m3 Date/Time
Analyte Results RL MDL Flag/Qual Results RL MDL Dilution Analyzed Analyst
Tetrachloroethylene
0.016
0.035
0.013 J
0.11
0.24
0.089
0.698
10/4/23 4:32
CMR
Tetrahydrofuran
0.24
0.35
0.072 J
0.70
1.0
0.21
0.698
10/4/23 4:32
CMR
Toluene
0.64
0.035
0.013
2.4
0.13
0.048
0.698
10/4/23 4:32
CMR
1,2,4-Trichlorobenzene
ND
0.035
0.019
ND
0.26
0.14
0.698
10/4/23 4:32
CMR
1, 1, 1 -Trichloroethane
ND
0.035
0.011
ND
0.19
0.059
0.698
10/4/23 4:32
CMR
1,1,2-Trichloroethane
ND
0.035
0.0089
ND
0.19
0.049
0.698
10/4/23 4:32
CMR
Trichloroethylene
ND
0.035
0.014
ND
0.19
0.076
0.698
10/4/23 4:32
CMR
Trichlorofluoromethane (Freon 11)
0.21
0.14
0.014
1.2
0.78
0.080
0.698
10/4/23 4:32
CMR
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
0.067
0.14
0.0077 J
0.51
1.1
0.059
0.698
10/4/23 4:32
CMR
1,2,4-Trimethylbenzene
0.12
0.035
0.016
0.57
0.17
0.079
0.698
10/4/23 4:32
CMR
1,3,5-Trimethylbenzene
0.047
0.035
0.018
0.23
0.17
0.088
0.698
10/4/23 4:32
CMR
Vinyl Acetate
1.7
0.70
0.12
6.2
2.5
0.44
0.698
10/4/23 4:32
CMR
Vinyl Chloride
ND
0.035
0.016
ND
0.089
0.041
0.698
10/4/23 4:32
CMR
m&p-Xylene
0.24
0.070
0.024
1.0
0.30
0.11
0.698
10/4/23 4:32
CMR
o-Xylene
0.11
0.035
0.013
0.50
0.15
0.055
0.698
10/4/23 4:32
CMR
Surrogates
4-Bromofluorobenzene (1)
4-Bromofluorobenzene (1)
% Recovery
% REC Limits
91.8 70-130
102 70-130
10/4/23 3:59
10/4/23 4:32
Page 15 of 33

Con -testa
A Face Aaalyticala Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
ANALYTICAL RESULTS
Project Location: W. Lewis St., Greensboro, NC
Sample Description/Location:
Work Order: 23JO188
Date Received: 9/29/2023
Sub Description/Location:
Initial Vacuum(in Hg): -28
Field Sample #: CS-13B
Canister ID: 2456
Final Vacuum(in Hg): -8.0
Sample ID: 23JO188-07
Canister Size: 6 liter
Receipt Vacuum(in Hg): -8.6
Sample Matrix: Ambient Air
Flow Controller ID: 3576
Flow Controller Type: Fixed -Orifice
Sampled: 9/25/2023 16:15
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
2.4
1.4
0.33
5.7
3.3
0.78
0.698
10/4/23
5:32
CMR
Benzene
0.088
0.035
0.011
0.28
0.11
0.034
0.698
10/4/23
5:32
CMR
Benzyl chloride
ND
0.035
0.019
ND
0.18
0.097
0.698
10/4/23
5:32
CMR
Bromodichloromethane
0.031
0.035
0.0095
J
0.21
0.23
0.063
0.698
10/4/23
5:32
CMR
Bromoform
ND
0.035
0.012
ND
0.36
0.13
0.698
10/4/23
5:32
CMR
Bromomethane
ND
0.035
0.019
ND
0.14
0.072
0.698
10/4/23
5:32
CMR
1,3-Butadiene
ND
0.035
0.029
ND
0.077
0.065
0.698
10/4/23
5:32
CMR
2-Butanone (MEK)
ND
1.4
0.39
ND
4.1
1.2
0.698
10/4/23
5:32
CMR
Carbon Disulfide
ND
0.35
0.067
ND
1.1
0.21
0.698
10/4/23
5:32
CMR
Carbon Tetrachloride
0.082
0.035
0.010
V-05
0.51
0.22
0.063
0.698
10/4/23
5:32
CMR
Chlorobenzene
ND
0.035
0.0088
ND
0.16
0.040
0.698
10/4/23
5:32
CMR
Chloroethane
ND
0.035
0.022
ND
0.092
0.058
0.698
10/4/23
5:32
CMR
Chloroform
0.28
0.035
0.0091
1.4
0.17
0.044
0.698
10/4/23
5:32
CMR
Chloromethane
0.32
0.070
0.014
0.65
0.14
0.029
0.698
10/4/23
5:32
CMR
Cyclohexane
0.018
0.035
0.015
J
0.062
0.12
0.053
0.698
10/4/23
5:32
CMR
Dibromochloromethane
ND
0.035
0.0094
ND
0.30
0.080
0.698
10/4/23
5:32
CMR
1,2-Dibromoethane (EDB)
ND
0.035
0.012
ND
0.27
0.089
0.698
10/4/23
5:32
CMR
1,2-Dichlorobenzene
ND
0.035
0.012
ND
0.21
0.073
0.698
10/4/23
5:32
CMR
1,3-Dichlorobenzene
ND
0.035
0.013
ND
0.21
0.078
0.698
10/4/23
5:32
CMR
1,4-Dichlorobenzene
ND
0.035
0.013
ND
0.21
0.077
0.698
10/4/23
5:32
CMR
Dichlorodifluoromethane (Freon 12)
0.42
0.035
0.015
B
2.1
0.17
0.072
0.698
10/4/23
5:32
CMR
1,1-Dichloroethane
ND
0.035
0.011
ND
0.14
0.045
0.698
10/4/23
5:32
CMR
1,2-Dichloroethane
ND
0.035
0.013
ND
0.14
0.053
0.698
10/4/23
5:32
CMR
1,1-Dichloroethylene
ND
0.035
0.010
ND
0.14
0.039
0.698
10/4/23
5:32
CMR
cis-1,2-Dichloroethylene
ND
0.035
0.011
ND
0.14
0.043
0.698
10/4/23
5:32
CMR
trans-1,2-Dichloroethylene
ND
0.035
0.011
ND
0.14
0.045
0.698
10/4/23
5:32
CMR
1,2-Dichloropropane
ND
0.035
0.0096
ND
0.16
0.044
0.698
10/4/23
5:32
CMR
cis- 1,3 -Dichloropropene
ND
0.035
0.016
ND
0.16
0.071
0.698
10/4/23
5:32
CMR
trans- 1, 3 -Dichloropropene
ND
0.035
0.018
ND
0.16
0.082
0.698
10/4/23
5:32
CMR
1,2-Dichloro-1,1,2,2-tetrafluoroethane (Freon 114)
ND
0.035
0.014
ND
0.24
0.098
0.698
10/4/23
5:32
CMR
1,4-Dioxane
ND
0.35
0.17
ND
1.3
0.62
0.698
10/4/23
5:32
CMR
Ethanol
4.7
1.4
0.93
8.8
2.6
1.7
0.698
10/4/23
5:32
CMR
Ethyl Acetate
0.21
0.35
0.10
J
0.77
1.3
0.36
0.698
10/4/23
5:32
CMR
Ethylbenzene
0.027
0.035
0.010
J
0.12
0.15
0.044
0.698
10/4/23
5:32
CMR
4-Ethyltoluene
ND
0.035
0.015
ND
0.17
0.075
0.698
10/4/23
5:32
CMR
Heptane
0.043
0.035
0.022
0.17
0.14
0.090
0.698
10/4/23
5:32
CMR
Hexachlorobutadiene
ND
0.035
0.020
ND
0.37
0.21
0.698
10/4/23
5:32
CMR
Hexane
ND
1.4
0.46
ND
4.9
1.6
0.698
10/4/23
5:32
CMR
2-Hexanone (MBK)
ND
0.035
0.015
ND
0.14
0.062
0.698
10/4/23
5:32
CMR
Isopropanol
ND
1.4
0.44
ND
3.4
1.1
0.698
10/4/23
5:32
CMR
Methyl tert-Butyl Ether (MTBE)
ND
0.035
0.017
ND
0.13
0.062
0.698
10/4/23
5:32
CMR
Methylene Chloride
0.096
0.35
0.094
J
0.33
1.2
0.33
0.698
10/4/23
5:32
CMR
4-Methyl-2-pentanone (MIBK)
ND
0.035
0.018
ND
0.14
0.076
0.698
10/4/23
5:32
CMR
Naphthalene
ND
0.035
0.023
ND
0.18
0.12
0.698
10/4/23
5:32
CMR
Propene
ND
1.4
0.38
ND
2.4
0.65
0.698
10/4/23
5:32
CMR
Styrene
0.022
0.035
0.019
J
0.092
0.15
0.080
0.698
10/4/23
5:32
CMR
1,1,2,2-Tetrachloroethane
ND
0.035
0.0086
ND
0.24
0.059
0.698
10/4/23
5:32
CMR
Page 16 of 33

Con -testa
A Face Aaalyticaia Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
Project Location: W. Lewis St., Greensboro, NC
Date Received: 9/29/2023
Field Sample #: CS-13B
Sample ID: 23JO188-07
Sample Matrix: Ambient Air
Sampled: 9/25/2023 16:15
ANALYTICAL RESULTS
Sample Description/Location:
Sub Description/Location:
Canister ID: 2456
Canister Size: 6 liter
Flow Controller ID: 3576
Sample Type: 8 hr
Work Order: 23JO188
Initial Vacuum(in Hg): -28
Final Vacuum(in Hg): -8.0
Receipt Vacuum(in Hg): -8.6
Flow Controller Type: Fixed -Orifice
Flow Controller Calibration
RPD Pre and Post -Sampling:
EPA TO-15
ppbv ug/m3 Date/Time
Analyte Results RL MDL Flag/Qual Results RL MDL Dilution Analyzed Analyst
Tetrachloroethylene
83
1.0
0.37
560
6.8
2.5
20
10/4/23 4:59
CMR
Tetrahydrofuran
0.15
0.35
0.072
J
0.44
1.0
0.21
0.698
10/4/23
5:32
CMR
Toluene
0.16
0.035
0.013
0.62
0.13
0.048
0.698
10/4/23
5:32
CMR
1,2,4-Trichlorobenzene
ND
0.035
0.019
ND
0.26
0.14
0.698
10/4/23
5:32
CMR
1, 1, 1 -Trichloroethane
ND
0.035
0.011
ND
0.19
0.059
0.698
10/4/23
5:32
CMR
1,1,2-Trichloroethane
ND
0.035
0.0089
ND
0.19
0.049
0.698
10/4/23
5:32
CMR
Trichloroethylene
0.11
0.035
0.014
0.59
0.19
0.076
0.698
10/4/23
5:32
CMR
Trichlorofluoromethane (Freon 11)
0.21
0.14
0.014
1.2
0.78
0.080
0.698
10/4/23
5:32
CMR
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
0.059
0.14
0.0077
J
0.45
1.1
0.059
0.698
10/4/23
5:32
CMR
1,2,4-Trimethylbenzene
0.052
0.035
0.016
0.26
0.17
0.079
0.698
10/4/23
5:32
CMR
1,3,5-Trimethylbenzene
0.036
0.035
0.018
0.18
0.17
0.088
0.698
10/4/23
5:32
CMR
Vinyl Acetate
0.25
0.70
0.12
J
0.89
2.5
0.44
0.698
10/4/23
5:32
CMR
Vinyl Chloride
ND
0.035
0.016
ND
0.089
0.041
0.698
10/4/23
5:32
CMR
m&p-Xylene
0.061
0.070
0.024
J
0.26
0.30
0.11
0.698
10/4/23
5:32
CMR
o-Xylene
0.029
0.035
0.013
J
0.13
0.15
0.055
0.698
10/4/23
5:32
CMR
Surrogates
4-Bromofluorobenzene (1)
4-Bromofluorobenzene (1)
% Recovery
% REC Limits
90.6 70-130
98.3 70-130
10/4/23 4:59
10/4/23 5:32
Page 17 of 33

Con -testa
A Face Aaalyticala Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
Sample Extraction Data
Prep Method: TO-15 Prep -EPA TO-15
Lab Number [Field ID1
Batch
Pressure
Dilution
Pre
Dilution
Pre-Dil
Initial
mL
Pre-Dil
Final
mL
Default
Injection
mL
Actual
Injection
mL
Date
23J0188-01 [IA-1]
B354602
1.5
1
N/A
1000
200
430
10/03/23
23J0188-OIRE1 [IA-1]
B354602
1.5
1
N/A
1000
200
15
10/03/23
23J0188-02[IA-2]
B354602
1.5
1
N/A
1000
200
430
10/03/23
23J0188-02REI[IA-2]
B354602
1.5
1
N/A
1000
200
15
10/03/23
23J0188-03[IA-3]
B354602
L.5
1
N/A
1000
200
430
10/03/23
23J0188-03RE1 [IA-3]
B354602
1.5
1
N/A
1000
200
15
10/03/23
23J0188-04 [IA-3 DUP]
B354602
1.5
1
N/A
1000
200
430
10/03/23
23J0188-04RE1 [IA-3 DUP]
B354602
1.5
1
N/A
1000
200
15
10/03/23
23J0188-05 [IA-4]
B354602
1.5
1
N/A
1000
200
430
10/03/23
23J0188-05RE1 [IA-4]
B354602
1.5
1
N/A
1000
200
15
10/03/23
23J0188-06 [IA-5]
B354602
1.5
1
N/A
1000
200
430
10/03/23
23J0188-06RE1 [IA-5]
B354602
1.5
1
N/A
1000
200
15
10/03/23
23J0188-07 [CS-13B]
B354602
1.5
1
N/A
1000
200
430
10/03/23
23J0188-07REI[CS-13B]
B354602
1.5
1
N/A
1000
200
15
10/03/23
Page 18 of 33

Con -testa
A Face Aaalyticala 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 B354602 - TO-15 Prep
Blank (B354602-BLK1)
Prepared & Analyzed: 10/03/23
Acetone
ND
0.80
Benzene
ND
0.020
Benzyl chloride
ND
0.020
Bromodichloromethane
ND
0.020
Bromoform
ND
0.020
Bromomethane
ND
0.020
1,3-Butadiene
ND
0.020
2-Butanone (MEK)
ND
0.80
Carbon Disulfide
ND
0.20
Carbon Tetrachloride
ND
0.020
V-05
Chlorobenzene
ND
0.020
Chloroethane
ND
0.020
Chloroform
ND
0.020
Chloromethane
ND
0.040
Cyclohexane
ND
0.020
Dibromochloromethane
ND
0.020
1,2-Dibromoethane (EDB)
ND
0.020
1,2-Dichlorobenzene
ND
0.020
1,3-Dichlorobenzene
ND
0.020
1,4-Dichlorobenzene
ND
0.020
Dichlorodifluoromethane (Freon 12)
0.0096
0.020
B,I
1,1-Dichloroethane
ND
0.020
1,2-Dichloroethane
ND
0.020
1,1-Dichloroethylene
ND
0.020
cis-1,2-Dichloroethylene
ND
0.020
trans-1,2-Dichloroethylene
ND
0.020
1,2-Dichloropropane
ND
0.020
cis- 1,3 -Dichloropropene
ND
0.020
trans- l,3-Dichloropropene
ND
0.020
1,2-Dichloro- 1, 1,2,2-tetrafluoroethane
ND
0.020
(Freon 114)
1,4-Dioxane
ND
0.20
Ethanol
ND
0.80
Ethyl Acetate
ND
0.20
Ethylbenzene
ND
0.020
4-Ethyltoluene
ND
0.020
Heptane
ND
0.020
Hexachlorobutadiene
ND
0.020
Hexane
ND
0.80
2-Hexanone (MBK)
ND
0.020
Isopropanol
ND
0.80
Methyl tert-Butyl Ether (MTBE)
ND
0.020
Methylene Chloride
ND
0.20
4-Methyl-2-pentanone (MIBK)
ND
0.020
Naphthalene
ND
0.020
Propene
ND
0.80
Styrene
ND
0.020
Page 19 of 33

Con -testa
A Face Aaalyticaia 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 B354602 - TO-15 Prep
Blank (B354602-BLK1)
Prepared & Analyzed: 10/03/23
1,1,2,2-Tetrachloroethane
ND
0.020
Tetrachloroethylene
ND
0.020
Tetrahydrofuran
ND
0.20
Toluene
ND
0.020
1,2,4-Trichlorobenzene
ND
0.020
1, 1, 1 -Trichloroethane
ND
0.020
1,1,2-Trichloroethane
ND
0.020
Trichloroethylene
ND
0.020
Trichlorofluoromethane (Freon 11)
ND
0.080
1, 1,2-Trichloro- 1,2,2-trifluoroethane (Freon
ND
0.080
113)
1,2,4-Trimethylbenzene
ND
0.020
1,3,5-Trimethylbenzene
ND
0.020
Vinyl Acetate
ND
0.40
Vinyl Chloride
ND
0.020
m&p-Xylene
ND
0.040
o-Xylene
ND
0.020
Surrogate: 4-Bromofluorobenzene (1)
LCS (B354602-BSI)
7.75
8.00 96.9
Prepared & Analyzed: 10/03/23
70-130
Acetone
4.19
5.00
83.8
70-130
Benzene
4.76
5.00
95.3
70-130
Benzyl chloride
5.15
5.00
103
70-130
Bromodichloromethane
4.77
5.00
95.5
70-130
Bromoform
5.15
5.00
103
70-130
Bromomethane
4.53
5.00
90.5
70-130
1,3-Butadiene
4.30
5.00
86.1
70-130
2-Butanone (MEK)
4.62
5.00
92.3
70-130
Carbon Disulfide
5.15
5.00
103
70-130
Carbon Tetrachloride
5.05
5.00
101
70-130 V-05
Chlorobenzene
4.80
5.00
95.9
70-130
Chloroethane
4.20
5.00
84.0
70-130
Chloroform
5.00
5.00
99.9
70-130
Chloromethane
4.31
5.00
86.1
70-130
Cyclohexane
4.72
5.00
94.3
70-130
Dibromochloromethane
5.19
5.00
104
70-130
1,2-Dibromoethane (EDB)
4.54
5.00
90.8
70-130
1,2-Dichlorobenzene
4.53
5.00
90.7
70-130
1,3-Dichlorobenzene
4.87
5.00
97.3
70-130
1,4-Dichlorobenzene
4.58
5.00
91.6
70-130
Dichlorodifluoromethane (Freon 12)
4.52
5.00
90.3
70-130
1,1-Dichloroethane
4.52
5.00
90.4
70-130
1,2-Dichloroethane
4.55
5.00
91.0
70-130
1,1-Dichloroethylene
4.73
5.00
94.6
70-130
cis-1,2-Dichloroethylene
4.82
5.00
96.5
70-130
trans-1,2-Dichloroethylene
4.57
5.00
91.4
70-130
1,2-Dichloropropane
4.94
5.00
98.7
70-130
Page 20 of 33

Con -testa
A Face Aaalyticala 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 B354602 - TO-15 Prep
LCS (B354602-BS1)
Prepared & Analyzed: 10/03/23
cis-1,3-Dichloropropene
4.75
5.00
95.0
70-130
trans-1,3-Dichloropropene
4.93
5.00
98.6
70-130
1,2-Dichloro- 1, 1,2,2-tetrafluoroethane
4.28
5.00
85.5
70-130
(Freon 114)
1,4-Dioxane
4.59
5.00
91.8
70-130
Ethanol
5.59
5.00
112
70-130
Ethyl Acetate
4.00
5.00
79.9
70-130
Ethylbenzene
4.80
5.00
96.1
70-130
4-Ethyltoluene
4.75
5.00
95.0
70-130
Heptane
4.75
5.00
95.0
70-130
Hexachlorobutadiene
4.05
4.25
95.3
70-130
Hexane
4.66
5.00
93.1
70-130
2-Hexanone (MBK)
4.77
5.00
95.4
70-130
Isopropanol
4.08
5.00
81.6
70-130
Methyl tert-Butyl Ether (MTBE)
4.39
5.00
87.8
70-130
Methylene Chloride
4.54
5.00
90.9
70-130
4-Methyl-2-pentanone (MIBK)
4.79
5.00
95.9
70-130
Naphthalene
3.41
3.68
92.6
70-130
Propene
4.55
5.00
90.9
70-130
Styrene
4.64
5.00
92.7
70-130
1,1,2,2-Tetrachloroethane
4.86
5.00
97.1
70-130
Tetrachloroethylene
4.92
5.00
98.5
70-130
Tetrahydrofuran
4.59
5.00
91.8
70-130
Toluene
4.78
5.00
95.6
70-130
1,2,4-Trichlorobenzene
3.63
3.90
93.0
70-130
1, 1, 1 -Trichloroethane
4.63
5.00
92.7
70-130
1,1,2-Trichloroethane
5.14
5.00
103
70-130
Trichloroethylene
4.57
5.00
91.5
70-130
Trichlorofluoromethane (Freon 11)
4.63
5.00
92.5
70-130
1, 1,2-Trichloro- 1,2,2-trifluoroethane (Freon
4.86
5.00
97.2
70-130
113)
1,2,4-Trimethylbenzene
4.65
5.00
93.1
70-130
1,3,5-Trimethylbenzene
4.80
5.00
96.1
70-130
Vinyl Acetate
5.20
5.00
104
70-130
Vinyl Chloride
4.45
5.00
88.9
70-130
m&p-Xylene
9.89
10.0
98.9
70-130
o-Xylene
4.88
5.00
97.5
70-130
Surrogate: 4-Bromofluorobenzene (1) 8.05 8.00 101 70-130
Page 21 of 33

Con -testa
A Face Aaalyticaia Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] ` TEL. [phone]
Note: Blank Subtraction is not performed unless otherwise noted
FLAG/QUALIFIER SUMMARY
*
QC result is outside of established limits.
t
Wide recovery limits established for difficult compound.
$
Wide RPD limits established for difficult compound.
#
Data exceeded client recommended or regulatory level
RL
Reporting Limit
MDL
Method Detection Limit
RPD
Relative Percent Difference
LCS
Laboratory Control Sample
LCS Dup
Duplicate Laboratory Control Sample
MS
Matrix Spike Sample
MS Dup
Duplicate Matrix Spike Sample
REC
Recovery
QC
Quality Control
ppbv
Parts per billion volume
EPA
United States Environmental Protection Agency
% REC Percent Recovery
ND Not Detected
N/A Not Applicable
DL Detection Limit
NC Not Calculated
LFB/LCS Lab Fortified Blank/Lab Control Sample
ORP Oxidation -Reduction Potential
wet Not dry weight corrected
% wt Percent weight
Kg Kilogram
g Gram
mg Milligram
µg Microgram
ng Nanogram
L Liter
mL Milliliter
µL Microliter
m3 Cubic Meter
EPH Extractable Petroleum Hydrocarbons
VPH Volatile Petroleum Hydrocarbons
APH Air Petroleum Hydrocarbons
FID Flame Ionization Detector
PID Photo Ionization Detector
Percent recoveries and relative percent differences (RPDs) are determined by the software using values in the
calculation which have not been rounded.
B Analyte is found in the associated laboratory blank as well as in the sample.
E Reported result is estimated. Value reported over verified calibration range.
J Detected but below the Reporting Limit (lowest calibration standard); therefore, result is an estimated
concentration (CLP J-Flag).
V-05 Continuing calibration verification (CCV) did not meet method specifications and was biased on the low side for
this compound.
Page 22 of 33

Con -testa
A Face Aaalyticaia Laboratory
39 Spruce Street * East Longmeadow, MA 01028 * FAX [phone] * TEL. [phone]
TPH
Thomas P. Hnitecki
TLF
Theresa L. Ferrentino
CMR
Catherine M. Rouleau
CMH
Christian M. Henriquez
ANALYST
Page 23 of 33

Con -testa
A Face Aaalyticaia 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 (S091464-ICV1) Lab File ID: L23A214020.D Analyzed: 08/02/23 23:42
Bromochloromethane (1)
300782
2.867
314027
2.871
96
60 - 140
-0.0040
+/-0.50
1,4-Difluorobenzene (1)
878479
3.54
895773
3.54
98
60 - 140
0.0000
+/-0.50
Chlorobenzene-d5(1)
823159
5.202
837397
5.202
98
60-140
0.0000
+/-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 (S094641-CCV1) Lab File ID: L23A276004.D Analyzed: 10/03/23 18:07
Bromochloromethane (1)
253640
2.871
314027
2.871
81
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
721512
3.539
895773
3.54
81
60-140
-0.0010
+/-0.50
Chlorobenzene-d5(1)
649134
5.202
837397
5.202
78
60-140
0.0000
+/-0.50
LCS (B354602-BS1 ) Lab File ID: L23A276005.D Analyzed: 10/03/23 18:34
Bromochloromethane (1)
254746
2.872
253640
2.871
100
60 - 140
0.0010
+/-0.50
1,4-Difluorobenzene(1)
719595
3.54
721512
3.539
100
60-140
0.0010
+/-0.50
Chlorobenzene-d5(1)
653324
5.202
649134
5.202
101
60-140
0.0000
+/-0.50
Blank (B354602-BLK1) Lab File ID: L23A276008.D Analyzed: 10/03/23 20:09
Bromochloromethane (1)
250299
2.87
253640
2.871
99
60 - 140
-0.0010
+/-0.50
1,4-Difluorobenzene(1)
664675
3.543
721512
3.539
92
60-140
0.0040
+/-0.50
Chlorobenzene-d5(1)
620942
5.204
649134
5.202
96
60-140
0.0020
+/-0.50
IA-1 (23J0188-01RE1) Lab File ID: L23A276009.D Analyzed: 10/03/23 22:59
Bromochloromethane (1)
250543
2.871
253640
2.871
99
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
661765
3.538
721512
3.539
92
60-140
-0.0010
+/-0.50
Chlorobenzene-d5(1)
615202
5.2
649134
5.202
95
60-140
-0.0020
+/-0.50
IA-1 (23J0188-01) Lab File ID: L23A276010.D Analyzed: 10/03/23 23:32
Bromochloromethane (1)
252712
2.866
253640
2.871
100
60 - 140
-0.0050
+/-0.50
1,4-Difluorobenzene(1)
683547
3.539
721512
3.539
95
60-140
0.0000
+/-0.50
Chlorobenzene-d5(1)
640582
5.202
649134
5.202
99
60-140
0.0000
+/-0.50
IA-2 (23J0188-02RE1) Lab File ID: L23A27601 LD Analyzed: 10/03/23 23:59
Bromochloromethane (1)
255088
2.871
253640
2.871
101
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
683750
3.544
721512
3.539
95
60-140
0.0050
+/-0.50
Chlorobenzene-d5(1)
615733
5.204
649134
5.202
95
60-140
0.0020
+/-0.50
IA-2 (23J0188-02 ) Lab File ID: L23A276012.1) Analyzed: 10/04/23 00:33
Bromochloromethane (1)
250942
2.866
253640
2.871
99
60 - 140
-0.0050
+/-0.50
1,4-Difluorobenzene(1)
679498
3.539
721512
3.539
94
60-140
0.0000
+/-0.50
Chlorobenzene-d5(1)
627234
5.201
649134
5.202
97
60-140
-0.0010
+/-0.50
Page 24 of 33

Con -testa
A Face Aaalyticaia Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
INTERNAL STANDARD AREAAND RT SUMMARY
EPA TO-15
Internal Standard
Response
RT
Reference
Response
Reference
RT
Area %
Area o/
Limits
RT Diff
RT Diff
Limit
Q
IA-3 (23J0188-03RE1) Lab File ID: L23A276013.D Analyzed: 10/04/23 00:59
Bromochloromethane (1)
253539
2.871
253640
2.871
100
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
677217
3.544
721512
3.539
94
60-140
0.0050
+/-0.50
Chlorobenzene-d5(1)
618606
5.2
649134
5.202
95
60-140
-0.0020
+/-0.50
IA-3 (23J0188-03 ) Lab File ID: L23A276014.D Analyzed: 10/04/23 01:32
Bromochloromethane (1)
249567
2.871
253640
2.871
98
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
671800
3.545
721512
3.539
93
60-140
0.0060
+/-0.50
Chlorobenzene-d5(1)
630854
5.201
649134
5.202
97
60-140
-0.0010
+/-0.50
IA-3 DUP (23J0188-04RE1) Lab File ID: L23A276015.D Analyzed: 10/04/23 01:59
Bromochloromethane (1)
250918
2.871
253640
2.871
99
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
666004
3.544
721512
3.539
92
60-140
0.0050
+/-0.50
Chlorobenzene-d5(1)
615141
5.2
649134
5.202
95
60-140
-0.0020
+/-0.50
IA-3 DUP (23J0188-04) Lab File ID: L23A276016.D Analyzed: 10/04/23 02:33
Bromochloromethane (1)
239096
2.872
253640
2.871
94
60 - 140
0.0010
+/-0.50
1,4-Difluorobenzene(1)
641997
3.545
721512
3.539
89
60-140
0.0060
+/-0.50
Chlorobenzene-d5(1)
600584
5.202
649134
5.202
93
60-140
0.0000
+/-0.50
IA-4 (23J0188-05RE1) Lab File ID: L23A276017.D Analyzed: 10/04/23 02:59
Bromochloromethane (1)
254551
2.871
253640
2.871
100
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
671573
3.544
721512
3.539
93
60-140
0.0050
+/-0.50
Chlorobenzene-d5(1)
617284
5.2
649134
5.202
95
60-140
-0.0020
+/-0.50
IA-4 (23J0188-05 ) Lab File ID: L23A276018.D Analyzed: 10/04/23 03:32
Bromochloromethane (1)
245426
2.871
253640
2.871
97
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
665171
3.539
721512
3.539
92
60-140
0.0000
+/-0.50
Chlorobenzene-d5(1)
629734
5.201
649134
5.202
97
60-140
-0.0010
+/-0.50
IA-5 (23J0188-06RE1) Lab File ID: L23A276019.D Analyzed: 10/04/23 03:59
Bromochloromethane (1)
242930
2.871
253640
2.871
96
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
653266
3.544
721512
3.539
91
60-140
0.0050
+/-0.50
Chlorobenzene-d5(1)
601619
5.2
649134
5.202
93
60-140
-0.0020
+/-0.50
IA-5 (23J0188-06) Lab File ID: L23A276020.D Analyzed: 10/04/23 04:32
Bromochloromethane (1)
241381
2.871
253640
2.871
95
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
668695
3.539
721512
3.539
93
60-140
0.0000
+/-0.50
Chlorobenzene-d5(1)
612924
5.202
649134
5.202
94
60-140
0.0000
+/-0.50
CS-13B (23J0188-07RE1) Lab File ID: L23A27602LD Analyzed: 10/04/23 04:59
Bromochloromethane (1)
243112
2.871
253640
2.871
96
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
650716
3.544
721512
3.539
90
60-140
0.0050
+/-0.50
Chlorobenzene-d5(1)
594998
5.2
649134
5.202
92
60-140
-0.0020
+/-0.50
Page 25 of 33

Con -testa
A Face Aaalyticaia 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
CS-13B (23J0188-07) Lab File ID: L23A276022.D Analyzed: 10/04/23 05:32
Bromochloromethane (1)
245143
2.871
253640
2.871
97
60 - 140
0.0000
+/-0.50
1,4-Difluorobenzene(1)
652848
3.544
721512
3.539
90
60-140
0.0050
+/-0.50
Chlorobenzene-d5(1)
618663
5.2
649134
5.202
95
60-140
-0.0020
+/-0.50
Page 26 of 33

Con -testa
A Face Aaalyticaia Laboratory
39 Spruce Street' East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
CONTINUING CALIBRATION CHECK
EPA TO-15
5094641-CCV 1
COMPOUND
TYPE.
CONC. (ppbv)
RESPONSE FACTOR
% DIFF / DRIFT
STD
CCV
ICAL
CCV
MIN (#)
CCV
LIMIT (#)
Acetone
A
5.00
4.50
1.122255
1.010617
-9.9
30
Benzene
A
5.00
4.67
0.7254293
0.6779341
-6.5
30
Benzyl chloride
A
5.00
5.50
0.65192
0.7177563
10.1
30
Bromodichloromethane
A
5.00
4.80
0.5567047
0.5340518
-4.1
30
Bromoform
A
5.00
4.44
0.4926101
0.4370155
-11.3
30
Bromomethane
A
5.00
4.55
0.6308676
0.5743384
-9.0
30
1,3-Butadiene
A
5.00
4.34
0.551149
0.4789592
-13.1
30
2-Butanone(MEK)
A
5.00
4.70
1.381604
1.298319
-6.0
30
Carbon Disulfide
A
5.00
4.70
2.063757
1.941038
-5.9
30
Carbon Tetrachloride
A
5.00
3.00
0.5110368
0.3064831
-40.0
30
Chlorobenzene
A
5.00
5.01
0.7219812
0.7239775
0.3
30
Chloroethane
A
5.00
4.24
0.411751
0.3493708
-15.1
30
Chloroform
A
5.00
4.99
1.439332
1.4366
-0.2
30
Chloromethane
A
5.00
4.39
0.6101459
0.5358524
-12.2
30
Cyclohexane
A
5.00
4.57
0.3030286
0.2769894
-8.6
30
Dibromochloromethane
A
5.00
4.72
0.5644122
0.5333407
-5.5
30
1,2-Dibromoethane(EDB)
A
5.00
4.84
0.5076449
0.4918405
-3.1
30
1,2-Dichlorobenzene
A
5.00
4.94
0.6234765
0.6161267
-1.2
30
1,3-Dichlorobenzene
A
5.00
5.08
0.6267236
0.6362594
1.5
30
1,4-Dichlorobenzene
A
5.00
5.35
0.5801365
0.6211722
7.1
30
Dichlorodifluoromethane (Freon 12)
A
5.00
4.64
1.768079
1.639584
-7.3
30
1,1-Dichloroethane
A
5.00
4.56
1.392824
1.268816
-8.9
30
1,2-Dichloroethane
A
5.00
4.62
0.9772927
0.9039079
-7.5
30
1,1-Dichloroethylene
A
5.00
4.73
1.127187
1.067112
-5.3
30
cis-1,2-Dichloroethylene
A
5.00
4.77
0.908952
0.8667529
-4.6
30
trans-1,2-Dichloroethylene
A
5.00
4.54
1.128232
1.02517
-9.1
30
1,2-Dichloropropane
A
5.00
4.90
0.2601948
0.2551087
-2.0
30
cis-1,3-Dichloropropene
A
5.00
4.85
0.3962271
0.3842065
-3.0
30
trans- l,3-Dichloropropene
A
5.00
4.68
0.3522842
0.330058
-6.3
30
1,2-Dichloro- 1, 1,2,2-tetrafluoroethane (Freon 1
A
5.00
4.61
1.784687
1.645305
-7.8
30
1,4-Dioxane
A
5.00
4.60
0.1742852
0.1603366
-8.0
30
Ethanol
A
5.00
4.80
0.1732414
0.1662577
-4.0
30
Ethyl Acetate
A
5.00
4.58
0.2390169
0.2187668
-8.5
30
Ethylbenzene
A
5.00
5.06
1.176902
1.189839
1.1
30
4-Ethyltoluene
A
5.00
4.93
1.247069
1.230055
-1.4
30
Heptane
A
5.00
4.71
0.2286847
0.2152347
-5.9
30
Hexachlorobutadiene
A
5.00
4.64
0.4755616
0.4408261
-7.3
30
Hexane
A
5.00
4.48
0.7442178
0.6672701
-10.3
30
Page 27 of 33

Con -testa
A Face Aaalyticaia Laboratory
39 Spruce Street' East Longmeadow, MA 01028 ` FAX [phone] " TEL. [phone]
CONTINUING CALIBRATION CHECK
EPA TO-15
5094641-CCV 1
COMPOUND
TYPE
CONC. (ppbv)
RESPONSE FACTOR
% DIFF / DRIFT
STD
CCV
ICAL
CCV
MIN (#)
CCV
LIMIT (#)
2-Hexanone (MBK)
A
5.00
5.01
0.5993899
0.6001645
0.1
30
Isopropanol
A
5.00
4.68
1.180699
1.104299
-6.5
30
Methyl tert-Butyl Ether (MTBE)
A
5.00
4.36
2.130891
1.857631
-12.8
30
Methylene Chloride
A
5.00
4.60
0.8716214
0.8020817
-8.0
30
4-Methyl-2-pentanone (MI13K)
A
5.00
4.97
0.2414371
0.2398297
-0.7
30
Naphthalene
A
5.00
3.85
0.954618
0.7347241
-23.0
30
Propene
A
5.00
4.58
0.4075236
0.3732093
-8.4
30
Styrene
A
5.00
5.08
0.6680173
0.6786124
1.6
30
1,1,2,2-Tetrachloroethane
A
5.00
5.22
0.6838293
0.7146062
4.5
30
Tetrachloroethylene
A
5.00
5.10
0.4174566
0.4260519
2.1
30
Tetrahydroforan
A
5.00
4.51
0.9111963
0.8219713
-9.8
30
Toluene
A
5.00
4.82
0.9385805
0.9042546
-3.7
30
1,2,4-Trichlorobenzene
A
5.00
4.17
0.3693275
0.3081915
-16.6
30
1, 1, 1 -Trichloroethane
A
5.00
4.97
0.5075792
0.5046314
-0.6
30
1,1,2-Trichloroethane
A
5.00
5.26
0.309655
0.3259555
5.3
30
Trichloroethylene
A
5.00
4.64
0.3356598
0.3117498
7.1
30
Trichlorofluoromethane(Freon 11)
A
5.00
4.74
1.816743
1.721634
-5.2
30
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 11
A
5.00
4.78
1.436582
1.374641
-4.3
30
1,2,4-Trimethylbenzene
A
5.00
5.15
1.021302
1.051575
3.0
30
1,3,5-Trimethylbenzene
A
5.00
5.21
1.055296
1.099515
4.2
30
Vinyl Acetate
A
5.00
4.69
1.463541
1.372818
-6.2
30
Vinyl Chloride
A
5.00
4.57
0.7105757
0.6490459
-8.7
30
m&p-Xylene
A
1 10.0
10.3
0.9711506
0.9992957
2.9
30
o-Xylene
A
1 5.00
5.01
0.9550518
0.9577338
0.3
30
# Column to be used to flag Response Factor and %Diff/Drift values with an asterisk
* Values outside of QC limits
Page 28 of 33

Con -testa
A Face Aaalyticaia 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
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 29 of 33

Con -testa
A Face Aaalyticala Laboratory
39 Spruce Street ` East Longmeadow, MA 01028 ' FAX [phone] " TEL. [phone]
CERTIFICATIONS
Certified Analyses included in this Report
Analyte
EPA TO-15 in Air
Tetrachloroethylene
Tetrahydrofuran
Toluene
1,2,4-Trichlorobenzene
1, 1, 1 -Trichloroethane
1,1,2-Trichloroethane
Trichloroethylene
Trichlorofluoromethane (Freon 11)
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113)
1,2,4-Trimethylbenzene
1,3,5-Trimethylbenzene
Vinyl Acetate
Vinyl Chloride
m&p-Xylene
o-Xylene
Certifications
AIHA,FL,NJ,NY,ME,NH, VA
AIHA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,NJ,NY,ME,NH,VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,NY,ME,NH
AIHA,NJ,NY,ME,NH,VA
AIHA,NJ,NY,ME,NH
AIHA,NJ,NY,ME,NH
AIHA,FL,NJ,NY,ME,NH, VA
AIHA,FL,NJ,NY,ME,NH, VA
AIHA, FL,NJ,NY,ME,NH, VA
AIHA, FL,NJ,NY,ME,NH, VA
Con -Test, a Pace Environmental Laboratory, operates under the following certifications and accreditation:
Code
Description
Number
Expires
AHIA
AIHA-LAP, LLC - ISO 17025:2017
100033
03/l/2024
NY
New York State Department of Health
10899 NELAP
04/1/2024
NH
New Hampshire Environmental Lab
2516 NELAP
02/5/2024
NJ
New Jersey DEP
MA007 NELAP
06/30/2024
FL
Florida Department of Health
E871027 NELAP
06/30/2024
ME
State of Maine
MA00100
06/9/2025
VA
Commonwealth of Virginia
460217
12/14/2023
Page 30 of 33

Ae-?
ace Analytical
)35 C) I
Address:
cZ,77
Phonc: 413-525-2332
Fax. [phone]
www. facelabs.com
r— 11,.
r4tiv1 r.,cc llhs.com DOC #378 REV3 11232021
39 Spruce Street Page of
East Longmeadow, MA 01028
A
ANALYSIS REOUBT17D
-Day I Jf 10�Day
ue Date: V40 R 1Pt L�
ne j ,Iu I a —
I -Day
3-Oay
e) f �7 Wil
2-Day
4-Day
Project Location:
Project Number:
,2 Oa 3
Format:
PDF W EXCEL
Project Manager: /I I
-Other:
Pace Quote Name/Number:
. ..... ... ..
CLIP Like Data
Pkg Required:
E—
trivoi ce Recipient: Ptf R—K mt
Email To:
Sampled By: t
Fax To 9:
Lab Use
Client Use
Collection Data
Duration
FI.A.,"ie
ik
Pace
Wort OrdeO
Client Sample ID Description
Beginning
bate/Time
Erding
bale
qW
Total
Mi ptesr,�
-111-1
Litnin
_LA
Sa
W
LK"70
L4
r,�
q1A
iK0
low
MCI
J. V16
U A
*41"
01
144
R
Comments
-
by: (signature)
Received by: (signature=
Relinquished by: (signature)
(D
W I
Received by: fsignature)
/Time:
!Time;
Date/Time:
Date/Time:
Date/Time:
From res"i
Hg Please fill out completely
I sign, date and retain the
yellow copy for your
records
Summa canisters and
_n
5 ,
X
flow controllers must be
returned within 15 days of
receipt or rental fees will
apply
for summa canister and
flow controller
rD
Information please refer
to Con -Test's Air Media
Agreement
jf
Liters
Can
Flow
FUMMa
ID
Controller it)
XT
4o
:110
3330
1047
3 f Od a
Please use the following codes to indicate possible sample
concentration within the Conc Code column above:
H - High-, M - Medium; L - Low; C - Clean; U - Unknown
Cr. Qd ace Analytical
Project Entity Other
E -J Government MuF)jcjpatqy MWRA Ll WRTA D Chromatogram
Federal 21 J School
AIHA-LAP,LLC
City [_J Brownfield MBTA
Matrix Codes:
SG = SOIL GAS
]A = INDOOR AIR
AMB = AMBIENT
SS = SUB SLAB
D DUP
BL = BLANK
0 = Other..
PCB ONLY
Soxhlet
Non Soxhlet

1013/23, 10:25 AM Detailed Tracking
FedEx' Tracking
Summary Tracking Results
SHIP SHIPPER CITY, RECIPIENT CITY, DELIVERY SCHEDULED
TRACKINGIb DATE STATE STATE STATUS DELIVERY SERVICE
DATE
DATE
OUR COMPANY
About FedEx
Ow Portfolio
Investor pelations
Careers
Fec±F--x BJoq
Corporate Responshllty
Newsroom
Contact Us
MORE FROM FEDEX
FedEx Compatible
FedEx Developer Portal
FedEx ? oc;istic;
5hopRunner
LANGUAGE
Unitedstates
FOLLOW FEDEX r�; f 0 6 'p
httpsa/www.fedex.com/fedextrackisummary?trknbr=773495991597,773495991634 Page 32 of 33

DC#_Title: ENV-FRM-ELON-0009 v04 Air Sample Receiving Checklist
ace
tp'tY�•_d'. SFRtILI$
Effective Date: 07/13/2023
Log In Back -Sheet
Client—f"% f,;}141/1 Pi1,.t
Project _�IO S-,,- t5`rt,rr� ,ktd ' Ts
MCP/RCP Required
Deliverable Package Requirement
Location
PWSID# (When Applicable) q
Arrival Method rF—iEIJ_�j►j
Received By / Date / Time
Back -Sheet By / Date / Time-- 113 11&0
Temperature hod #
Temp < 6u C Actual Temperature -
Rush Samples: Yes -1 Notify
Short Hold: Yes / N Notify
Notes regarding „Samples/COC .,outside of SOP:
Summa Cans
Tedlar Bags
TO-17 Tubes
Radiello
Pufs/ TO-11
Login Sample Receipt Checklist — (Rejection Criteria Listing — Using Acceptance Policy)
Any False statement will be brought to the attention of the Client — True or False
True False
Received on Ice ❑
Received in Cooler ❑
Custody Seal.: DATE TI
ME ❑
Is there enough Volume
131
❑
Proper Media/Container J
Individually Certiffed Cans
7
❑
Trip Blanks
❑
LN
COC Legible
❑
COC Included: Check all included
Client � Analysis
Sampler Name
Project El UC
IDs
Collection Date/Time
Nut/Ferrule IC Train
Tubing
T-Connector Shlppin
Syringe
Tedlar
Cane 5
10
15
Re s #'�
5/
!
10
15
1
I 6
11
16
1
' 6
11
16
2
�U 7
12
17
2
7
7 7
12
17
3
8
13
18
3
8
13
18
4
1 9
14
19
4
4
14
19
IJ(IU50t1111ledla 4
9
14
i�US/T©��:$
5
10
15
1
5
10
is
1
6
11
16
2
6
11
16
2
7
12
17
3
7
12
17
3
8
13
18
4
8
13
18
4
9
14
19
Qualtrax ID; 127034 Page 1 of 1
Page 33 of 33

Attachment F

North Carolina Department of Environmental Quality
Risk Calculator
Version Date:
July 2023
Basis:
May 2023 EPA RSL Table
Site Name:
West Lewis Street Brownfields Site
Site Address:
109, 111, 115, 117, and 120 W. Lewis Street
DEQ Section:
NC Brownfields Redevelopment Section
Site ID:
Brownfields # 17046-13-041
Exposure Unit ID:
Indoor Air
Submittal Date:
11/10/2023
Prepared By:
Michael Jones
Pyramid Environmental
Reviewed By:
Michael Jones
North Carolina DEQ Risk Calculator

)sure Point Concentrations
lion Date: July 2023
s: May 2023 EPA RSL Table
ID: Brownfields # 17046-13-041
)sure Unit ID: Indoor Air
Indoor Air Exposure Point Concentration Table
Description of Exposure Point Concentration Selection:
IA-4 Transform GSO Offices Area
Note: Chemicals highlighted in orange are non-volatile chemicals. Risks are calculated for these chemicals 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.
If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations
Exposure Point
Minimum
Maximum
Location of
Range of
Concentration
Screening
Potential
Potential
Rationale for
Concentration
Notes:
CAS Number
Chemical
Concentration
Concentration
Units
Maximum
Detection
Detection
Used for
Background
Toxicity Value
ARAR/TBC
ARAR/TBC
COPC Flag
Selection or
(ug/m)
(Qualifier)
(Qualifier)
Concentration
Frequency
Limits
Screening
Value
(Screening
Value
Source
(Y/N)
Deletion
Level) (n/c)
44
67-64-1
Acetone
ug/m3
0.48
1
71-43-2
Benzene
ug/m3
0.46
V-05
56-23-5
Carbon Tetrachloride
ug/m3
0.31
67-66-3
Chloroform
ug/m3
1.1
74-87-3
Chloromethane
ug/m3
0.1
I
106-46-7
Dichlorobenzene,l,4-
ug/m3
2.2
B
75-71-8
Dichlorodifluoromethane
ug/m3
0.082
I
107-06-2
Dichloroethane, 1,2-
ug/m3
ND
156-59-2
Dichloroethylene, cis-1,2-
ug/m3
ND
156-60-5
Dichloroeth lene, trans-1,2-
ug/m3
ND
78-87-5
Dichloropropare, 1,2-
ug/m3
3.2
141-78-6
Ethyl Acetate
ug/m3
0.43
100-41-4
Ethylbenzene
ug/m3
0.46
142-82-5
He tane, N-
ug/m3
0.67
591-78-6
Hexanone,2-
ug/m3
12
67-63-0
Iso ro anol
ug/m3
2.3
1
78-93-3
Methyl Ethyl Ketone (2-Butanone)
ug/m3
0.47
I
75-09-2
Methylene Chloride
ug/m3
4.6
91-20-3
—Naphthalene
ug/m3
0.46
100-42-5
Styrene
ug/m3
0.16
I
127-18-4
Tetrachloroethylene
ug/m3
2
108-88-3
Toluene
ug/m3
ND
120-82-1
Trichlorobenzene, 1,2,4-
ug/m3
ND
79-01-6
Trichloroeth lene
ug/m3
0.45
95-63-6
Trimethylbenzene, 1,2,4-
ug/m3
0.17
108-67-8
Trimeth Ibenzene, 1,3,5-
ug/m3
3.2
I
108-05-4
Vinyl Acetate
ug/m3
1.1
108-38-3
X lene, m-
ug/m3
0.52
95-47-6
Xylene, o-
ug/m3
North Carolina DEQ Risk Calmlalor

Risk for Individual Pathways
1
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: Brownfields # 17046-13-041
Exposure Unit ID: Indoor Air
DIRECT CONTACT SOIL AND WATER CALCULATORS
Receptor
Pathway
CarcinogenicRisk
Hazard Index
Risk exceeded?
Resident
Soil
0.0E+00
0.0E+00
NO
Groundwater Use*
NC
NC
NC
Non -Residential Worker
Soil
0.0E+00
0.0E+00
NO
Groundwater Use*
NC
NC
NC
Construction Worker
Soil
NC
NC
NC
Recreator/Trespasser
Soil
NC
NC
NC
Surface Water*
NC
NC
NC
VAPOR INTRUSION CALCULATORS
Receptor
Pathway
CarcinogenicRisk
Hazard Index
Risk exceeded?
Resident
Groundwater to Indoor Air
0.0E+00
0.0E+00
NO
Soil Gas to Indoor Air
0.0E+00
0.0E+00
NO
Indoor Air
6.2E-05
1.7E+00
YES
Non -Residential Worker
Groundwater to Indoor Air
0.0E+00
0.0E+00
NO
Soil Gas to Indoor Air
0.0E+00
0.0E+00
NO
Indoor Air
1.4E-05
4.1E-01
NO
CONTAMINANT MIGRATION CALCULATORS
Pathway
Source
Target Receptor Concentrations Exceeded?
Groundwater
Source Soil
Exceedence of 2L at Receptor?
NM
Source Groundwater
Exceedence of 2L at Receptor?
NM
Surface Water
Source Soil
Exceedence of 2B at Receptor?
NM
Source Groundwater
Exceedence of 2B at Receptor?
NM
Notes:
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk -based
closure.
3. NM = Not modeled, user did not check this pathway as complete.
4. NC = Pathway not calculated, required contaminant migration parameters were not entered.
North Carolina DEQ Risk Calculator

)sure Point Concentrations
lion Date: July 2023
s: May 2023 EPA RSL Table
ID: Brownfields # 17046-13-041
)sure Unit ID: Indoor Air
Indoor Air Exposure Point Concentration Table
Description of Exposure Point Concentration Selection:
IA-5 Transform GSO Near Meeting Rooms
Note: Chemicals highlighted in orange are non-volatile chemicals. Risks are calculated for these chemicals 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.
If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations
Exposure Point
Minimum
Maximum
Location of
Range of
Concentration
Screening
Potential
Potential
Rationale for
Concentration
Notes:
CAS Number
Chemical
Concentration
Concentration
Units
Maximum
Detection
Detection
Used for
Background
Toxicity Value
ARAR/TBC
ARAR/TBC
COPC Flag
Selection or
(ug/m)
(Qualifier)
(Qualifier)
Concentration
Frequency
Limits
Screening
Value
(Screening
Value
Source
(Y/N)
Deletion
Level) (n/c)
55
67-64-1
Acetone
119/m3
0.5
1
71-43-2
Benzene
ug/m3
0.49
V-05
56-23-5
Carbon Tetrachloride
ug/m3
0.5
67-66-3
Chloroform
ug/m3
1.2
74-87-3
Chloromethane
ug/m3
ND
106-46-7
Dichlorobenzene,l,4-
ug/m3
2.1
B
75-71-8
Dichlorodifluoromethane
ug/m3
0.11
I
107-06-2
Dichloroethane, 1,2-
ug/m3
ND
156-59-2
Dichloroethylene, cis-1,2-
ug/m3
0.089
I
156-60-5
Dichloroeth lene, trans-1,2-
ug/m3
ND
78-87-5
Dichloropropare, 1,2-
ug/m3
5.8
141-78-6
Ethyl Acetate
ug/m3
0.44
100-41-4
Ethylbenzene
ug/m3
0.5
142-82-5
He tane, N-
ug/m3
0.99
591-78-6
Hexanone,2-
ug/m3
12
67-63-0
Iso ro anol
ug/m3
3.8
1
78-93-3
Methyl Ethyl Ketone (2-Butanone)
ug/m3
1.1
I
75-09-2
Methylene Chloride
ug/m3
11
91-20-3
—Naphthalene
ug/m3
0.45
100-42-5
Styrene
ug/m3
0.11
I
127-18-4
Tetrachloroethylene
ug/m3
2.4
108-88-3
Toluene
ug/m3
ND
120-82-1
Trichlorobenzene, 1,2,4-
ug/m3
ND
79-01-6
Trichloroeth lene
ug/m3
0.57
95-63-6
Trimethylbenzene, 1,2,4-
ug/m3
0.23
108-67-8
Trimeth Ibenzene, 1,3,5-
ug/m3
6.2
108-05-4
Vinyl Acetate
ug/m3
1
108-38-3
X lene, m-
ug/m3
0.5
95-47-6
Xylene, o-
ug/m3
North Carolina DEQ Risk Calmlalor

Risk for Individual Pathways
1
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: Brownfields # 17046-13-041
Exposure Unit ID: Indoor Air
DIRECT CONTACT SOIL AND WATER CALCULATORS
Receptor
Pathway
CarcinogenicRisk
Hazard Index
Risk exceeded?
Resident
Soil
0.0E+00
0.0E+00
NO
Groundwater Use*
NC
NC
NC
Non -Residential Worker
Soil
0.0E+00
0.0E+00
NO
Groundwater Use*
NC
NC
NC
Construction Worker
Soil
NC
NC
NC
Recreator/Trespasser
Soil
NC
NC
NC
Surface Water*
NC
NC
NC
VAPOR INTRUSION CALCULATORS
Receptor
Pathway
CarcinogenicRisk
Hazard Index
Risk exceeded?
Resident
Groundwater to Indoor Air
0.0E+00
0.0E+00
NO
Soil Gas to Indoor Air
0.0E+00
0.0E+00
NO
Indoor Air
1.4E-04
3.8E+00
YES
Non -Residential Worker
Groundwater to Indoor Air
0.0E+00
0.0E+00
NO
Soil Gas to Indoor Air
0.0E+00
0.0E+00
NO
Indoor Air
3.2E-05
9.1E-01
NO
CONTAMINANT MIGRATION CALCULATORS
Pathway
Source
Target Receptor Concentrations Exceeded?
Groundwater
Source Soil
Exceedence of 2L at Receptor?
NM
Source Groundwater
Exceedence of 2L at Receptor?
NM
Surface Water
Source Soil
Exceedence of 2B at Receptor?
NM
Source Groundwater
Exceedence of 2B at Receptor?
NM
Notes:
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk -based
closure.
3. NM = Not modeled, user did not check this pathway as complete.
4. NC = Pathway not calculated, required contaminant migration parameters were not entered.
North Carolina DEQ Risk Calculator

TABLES

North Carolina Department of Environmental Quality
Risk Calculator
Version Date:
July 2023
Basis:
May 2023 EPA RSL Table
Site Name:
West Lewis Street Brownfields Site
Site Address:
109, 111, 115, 117, and 120 W. Lewis Street
DEQ Section:
NC Brownfields Redevelopment Section
Site ID:
Brownfields # 17046-13-041
Exposure Unit ID:
Indoor Air
Submittal Date:
11/10/2023
Prepared By:
Michael Jones
Pyramid Environmental
Reviewed By:
Michael Jones
North Carolina DEQ Risk Calculator

)sure Point Concentrations
lion Date: July 2023
s: May 2023 EPA RSL Table
ID: Brownfields # 17046-13-041
)sure Unit ID: Indoor Air
Indoor Air Exposure Point Concentration Table
Description of Exposure Point Concentration Selection:
CS-13 B Crawlspace Under The Pub
Note: Chemicals highlighted in orange are non-volatile chemicals. Risks are calculated for these chemicals 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.
If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations
Exposure Point
Minimum
Maximum
Location of
Range of
Concentration
Screening
Potential
Potential
Rationale for
Concentration
Notes:
CAS Number
Chemical
Concentration
Concentration
Units
Maximum
Detection
Detection
Used for
Background
Toxicity Value
ARAR/TBC
ARAR/TBC
COPC Flag
Selection or
(ug/m)
(Qualifier)
(Qualifier)
Concentration
Frequency
Limits
Screening
Value
(Screening
Value
Source
(Y/N)
Deletion
Level) (n/c)
5.7
67-64-1
Acetone
ug/m3
0.28
1
71-43-2
Benzene
ug/m3
0.51
V-05
56-23-5
Carbon Tetrachloride
ug/m3
1.4
67-66-3
Chloroform
ug/m3
0.65
74-87-3
Chloromethane
ug/m3
ND
106-46-7
Dichlorobenzene,l,4-
ug/m3
2.1
B
75-71-8
Dichlorodifluoromethane
ug/m3
ND
107-06-2
Dichloroethane, 1,2-
ug/m3
ND
156-59-2
Dichloroethylene, cis-1,2-
ug/m3
ND
156-60-5
Dichloroeth lene, trans-1,2-
ug/m3
ND
78-87-5
Dichloropropare, 1,2-
ug/m3
0.77
I
141-78-6
Ethyl Acetate
ug/m3
0.17
100-41-4
Ethylbenzene
ug/m3
ND
142-82-5
He tane, N-
ug/m3
ND
591-78-6
Hexanone,2-
ug/m3
ND
67-63-0
Iso ro anol
ug/m3
ND
78-93-3
Methyl Ethyl Ketone (2-Butanone)
ug/m3
0.33
I
75-09-2
Methylene Chloride
ug/m3
ND
91-20-3
—Naphthalene
ug/m3
0.092
I
100-42-5
Styrene
ug/m3
560
127-18-4
Tetrachloroethylene
ug/m3
0.62
108-88-3
Toluene
ug/m3
ND
120-82-1
Trichlorobenzene, 1,2,4-
ug/m3
0.59
79-01-6
Trichloroeth lene
ug/m3
0.26
95-63-6
Trimethylbenzene, 1,2,4-
ug/m3
0.18
108-67-8
Trimeth Ibenzene, 1,3,5-
ug/m3
0.89
I
108-05-4
Vinyl Acetate
ug/m3
0.26
J
108-38-3
X lene, m-
ug/m3
0.13
1
95-47-6
Xylene, o-
ug/m3
North Carolina DEQ Risk Calmlalor

Risk for Individual Pathways
1
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: Brownfields # 17046-13-041
Exposure Unit ID: Indoor Air
DIRECT CONTACT SOIL AND WATER CALCULATORS
Receptor
Pathway
CarcinogenicRisk
Hazard Index
Risk exceeded?
Resident
Soil
0.0E+00
0.0E+00
NO
Groundwater Use*
NC
NC
NC
Non -Residential Worker
Soil
0.0E+00
0.0E+00
NO
Groundwater Use*
NC
NC
NC
Construction Worker
Soil
NC
NC
NC
Recreator/Trespasser
Soil
NC
NC
NC
Surface Water*
NC
NC
NC
VAPOR INTRUSION CALCULATORS
Receptor
Pathway
CarcinogenicRisk
Hazard Index
Risk exceeded?
Resident
Groundwater to Indoor Air
0.0E+00
0.0E+00
NO
Soil Gas to Indoor Air
0.0E+00
0.0E+00
NO
Indoor Air
6.7E-05
1.4E+01
YES
Non -Residential Worker
Groundwater to Indoor Air
0.0E+00
0.0E+00
NO
Soil Gas to Indoor Air
0.0E+00
0.0E+00
NO
Indoor Air
1.5E-05
3.3E+00
YES
CONTAMINANT MIGRATION CALCULATORS
Pathway
Source
Target Receptor Concentrations Exceeded?
Groundwater
Source Soil
Exceedence of 2L at Receptor?
NM
Source Groundwater
Exceedence of 2L at Receptor?
NM
Surface Water
Source Soil
Exceedence of 2B at Receptor?
NM
Source Groundwater
Exceedence of 2B at Receptor?
NM
Notes:
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk -based
closure.
3. NM = Not modeled, user did not check this pathway as complete.
4. NC = Pathway not calculated, required contaminant migration parameters were not entered.
North Carolina DEQ Risk Calculator

FIGURES

North Carolina Department of Environmental Quality
Risk Calculator
Version Date:
July 2023
Basis:
May 2023 EPA RSL Table
Site Name:
West Lewis Street Brownfields Site
Site Address:
109, 111, 115, 117, and 120 W. Lewis Street
DEQ Section:
NC Brownfields Redevelopment Section
Site ID:
Brownfields # 17046-13-041
Exposure Unit ID:
Indoor Air
Submittal Date:
11/10/2023
Prepared By:
Michael Jones
Pyramid Environmental
Reviewed By:
Michael Jones
North Carolina DEQ Risk Calculator

)sure Point Concentrations
lion Date: July 2023
s: May 2023 EPA RSL Table
ID: Brownfields # 17046-13-041
)sure Unit ID: Indoor Air
Indoor Air Exposure Point Concentration Table
Description of Exposure Point Concentration Selection:
IA-1 Boxcar Events Center -North
Note: Chemicals highlighted in orange are non-volatile chemicals. Risks are calculated for these chemicals 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.
If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations
Exposure Point
Minimum
Maximum
Location of
Range of
Concentration
Screening
Potential
Potential
Rationale for
Concentration
Notes:
CAS Number
Chemical
Concentration
Concentration
Units
Maximum
Detection
Detection
Used for
Background
Toxicity Value
ARAR/TBC
ARAR/TBC
COPC Flag
Selection or
(ug/m)
(Qualifier)
(Qualifier)
Concentration
Frequency
Limits
Screening
Value
(Screening
Value
Source
(Y/N)
Deletion
Level) (n/c)
51
67-64-1
Acetone
ug/m3
0.45
1
71-43-2
Benzene
ug/m3
0.5
V-05
56-23-5
Carbon Tetrachloride
ug/m3
1.1
67-66-3
Chloroform
ug/m3
0.99
74-87-3
Chloromethane
ug/m3
0.46
106-46-7
Dichlorobenzene,l,4-
ug/m3
2.7
B
75-71-8
Dichlorodifluoromethane
ug/m3
0.3
107-06-2
Dichloroethane, 1,2-
ug/m3
0.053
1
156-59-2
Dichloroethylene, cis-1,2-
ug/m3
0.086
J
156-60-5
Dichloroeth lene, trans-1,2-
ug/m3
0.077
1
78-87-5
Dichloropropane, 1,2-
ug/m3
7.6
141-78-6
Ethyl Acetate
ug/m3
1.2
100-41-4
Ethylbenzene
ug/m3
0.26
111-71-7
He tanal,n-
ug/m3
0.39
591-78-6
Hexanone,2-
ug/m3
160
67-63-0
Iso ro anol
ug/m3
8.7
78-93-3
Methyl Ethyl Ketone (2-Butanone)
ug/m3
0.46
J
75-09-2
Methylene Chloride
ug/m3
0.41
91-20-3
—Naphthalene
ug/m3
2
100-42-5
Styrene
ug/m3
7.7
127-18-4
Tetrachloroethylene
ug/m3
7.7
108-88-3
Toluene
ug/m3
0.14
1
120-82-1
Trichlorobenzene, 1,2,4-
ug/m3
0.13
J
79-01-6
Trichloroeth lene
ug/m3
1.5
95-63-6
Trimethylbenzene, 1,2,4-
ug/m3
0.49
108-67-8
Trimeth Ibenzene, 1,3,5-
u9/m3
2.7
108-05-4
Vinyl Acetate
ug/m3
3.8
108-38-3
X lene, m-
ug/m3
1.7
95-47-6
Xylene, o-
ug/m3
North Carolina DEQ Risk Calmlalor

Risk for Individual Pathways
1
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: Brownfields # 17046-13-041
Exposure Unit ID: Indoor Air
DIRECT CONTACT SOIL AND WATER CALCULATORS
Receptor
Pathway
CarcinogenicRisk
Hazard Index
Risk exceeded?
Resident
Soil
0.0E+00
0.0E+00
NO
Groundwater Use*
NC
NC
NC
Non -Residential Worker
Soil
0.0E+00
0.0E+00
NO
Groundwater Use*
NC
NC
NC
Construction Worker
Soil
NC
NC
NC
Recreator/Trespasser
Soil
NC
NC
NC
Surface Water*
NC
NC
NC
VAPOR INTRUSION CALCULATORS
Receptor
Pathway
CarcinogenicRisk
Hazard Index
Risk exceeded?
Resident
Groundwater to Indoor Air
0.0E+00
0.0E+00
NO
Soil Gas to Indoor Air
0.0E+00
0.0E+00
NO
Indoor Air
2.3E-05
1.6E+00
YES
Non -Residential Worker
Groundwater to Indoor Air
0.0E+00
0.0E+00
NO
Soil Gas to Indoor Air
0.0E+00
0.0E+00
NO
Indoor Air
5.3E-06
3.9E-01
NO
CONTAMINANT MIGRATION CALCULATORS
Pathway
Source
Target Receptor Concentrations Exceeded?
Groundwater
Source Soil
Exceedence of 2L at Receptor?
NM
Source Groundwater
Exceedence of 2L at Receptor?
NM
Surface Water
Source Soil
Exceedence of 2B at Receptor?
NM
Source Groundwater
Exceedence of 2B at Receptor?
NM
Notes:
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk -based
closure.
3. NM = Not modeled, user did not check this pathway as complete.
4. NC = Pathway not calculated, required contaminant migration parameters were not entered.
North Carolina DEQ Risk Calculator

)sure Point Concentrations
lion Date: July 2023
s: May 2023 EPA RSL Table
ID: Brownfields # 17046-13-041
)sure Unit ID: Indoor Air
Indoor Air Exposure Point Concentration Table
Description of Exposure Point Concentration Selection:
IA-2 Boxcar Events Center - West
Note: Chemicals highlighted in orange are non-volatile chemicals. Risks are calculated for these chemicals 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.
If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations
Exposure Point
Minimum
Maximum
Location of
Range of
Concentration
Screening
Potential
Potential
Rationale for
Concentration
Notes:
CAS Number
Chemical
Concentration
Concentration
Units
Maximum
Detection
Detection
Used for
Background
Toxicity Value
ARAR/TBC
ARAR/TBC
COPC Flag
Selection or
(ug/m)
(Qualifier)
(Qualifier)
Concentration
Frequency
Limits
Screening
Value
(Screening
Value
Source
(Y/N)
Deletion
Level) (n/c)
68
67-64-1
Acetone
ug/m3
0.43
1
71-43-2
Benzene
ug/m3
0.52
V-05
56-23-5
Carbon Tetrachloride
ug/m3
0.8
67-66-3
Chloroform
ug/m3
0.93
74-87-3
Chloromethane
ug/m3
0.31
106-46-7
Dichlorobenzene,l,4-
ug/m3
2.4
B
75-71-8
Dichlorodifluoromethane
ug/m3
0.12
107-06-2
Dichloroethane, 1,2-
ug/m3
0.094
1
156-59-2
Dichloroethylene, cis-1,2-
ug/m3
0.094
J
156-60-5
Dichloroeth lene, trans-1,2-
ug/m3
0.068
1
78-87-5
Dichloropropane, 1,2-
ug/m3
5.3
141-78-6
Ethyl Acetate
ug/m3
0.45
100-41-4
Ethylbenzene
ug/m3
0.35
142-82-5
He tane, N-
ug/m3
0.25
591-78-6
Hexanone,2-
ug/m3
48
67-63-0
Iso ro anol
ug/m3
2.8
1
78-93-3
Methyl Ethyl Ketone (2-Butanone)
ug/m3
0.42
J
75-09-2
Methylene Chloride
ug/m3
0.34
91-20-3
—Naphthalene
ug/m3
1.2
100-42-5
Styrene
ug/m3
2
127-18-4
Tetrachloroethylene
ug/m3
1.9
108-88-3
Toluene
ug/m3
ND
120-82-1
Trichlorobenzene, 1,2,4-
ug/m3
0.2
79-01-6
Trichloroeth lene
ug/m3
0.52
95-63-6
Trimethylbenzene, 1,2,4-
ug/m3
0.19
108-67-8
Trimeth Ibenzene, 1,3,5-
ug/m3
2.3
1
108-05-4
Vinyl Acetate
ug/m3
1.1
108-38-3
X lene, m-
ug/m3
0.45
95-47-6
Xylene, o-
ug/m3
North Carolina DEQ Risk Calmlalor

Risk for Individual Pathways
1
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: Brownfields # 17046-13-041
Exposure Unit ID: Indoor Air
DIRECT CONTACT SOIL AND WATER CALCULATORS
Receptor
Pathway
CarcinogenicRisk
Hazard Index
Risk exceeded?
Resident
Soil
0.0E+00
0.0E+00
NO
Groundwater Use*
NC
NC
NC
Non -Residential Worker
Soil
0.0E+00
0.0E+00
NO
Groundwater Use*
NC
NC
NC
Construction Worker
Soil
NC
NC
NC
Recreator/Trespasser
Soil
NC
NC
NC
Surface Water*
NC
NC
NC
VAPOR INTRUSION CALCULATORS
Receptor
Pathway
CarcinogenicRisk
Hazard Index
Risk exceeded?
Resident
Groundwater to Indoor Air
0.0E+00
0.0E+00
NO
Soil Gas to Indoor Air
0.0E+00
0.0E+00
NO
Indoor Air
1.6E-05
7.0E-01
NO
Non -Residential Worker
Groundwater to Indoor Air
0.0E+00
0.0E+00
NO
Soil Gas to Indoor Air
0.0E+00
0.0E+00
NO
Indoor Air
3.7E-06
1.7E-01
NO
CONTAMINANT MIGRATION CALCULATORS
Pathway
Source
Target Receptor Concentrations Exceeded?
Groundwater
Source Soil
Exceedence of 2L at Receptor?
NM
Source Groundwater
Exceedence of 2L at Receptor?
NM
Surface Water
Source Soil
Exceedence of 2B at Receptor?
NM
Source Groundwater
Exceedence of 2B at Receptor?
NM
Notes:
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk -based
closure.
3. NM = Not modeled, user did not check this pathway as complete.
4. NC = Pathway not calculated, required contaminant migration parameters were not entered.
North Carolina DEQ Risk Calculator

)sure Point Concentrations
lion Date: July 2023
s: May 2023 EPA RSL Table
ID: Brownfields # 17046-13-041
)sure Unit ID: Indoor Air
Indoor Air Exposure Point Concentration Table
Description of Exposure Point Concentration Selection:
IA-3 Boxcar Events Center - Women's Bathroom - Eastern Side
Note: Chemicals highlighted in orange are non-volatile chemicals. Risks are calculated for these chemicals 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.
If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations
Exposure Point
Minimum
Maximum
Location of
Range of
Concentration
Screening
Potential
Potential
Rationale for
Concentration
Notes:
CAS Number
Chemical
Concentration
Concentration
Units
Maximum
Detection
Detection
Used for
Background
Toxicity Value
ARAR/TBC
ARAR/TBC
COPC Flag
Selection or
(ug/m)
(Qualifier)
(Qualifier)
Concentration
Frequency
Limits
Screening
Value
(Screening
Value
Source
(Y/N)
Deletion
Level) (n/c)
74
67-64-1
Acetone
119/m3
0.4
1
71-43-2
Benzene
ug/m3
0.52
V-05
56-23-5
Carbon Tetrachloride
ug/m3
0.83
67-66-3
Chloroform
ug/m3
0.96
74-87-3
Chloromethane
ug/m3
0.28
106-46-7
Dichlorobenzene,l,4-
ug/m3
2.1
B
75-71-8
Dichlorodifluoromethane
ug/m3
ND
107-06-2
Dichloroethane, 1,2-
ug/m3
0.83
I
156-59-2
Dichloroethylene, cis-1,2-
ug/m3
0.69
I
156-60-5
Dichloroeth lene, trans-1,2-
ug/m3
0.048
I
78-87-5
Dichloropropane, 1,2-
ug/m3
3.8
141-78-6
Ethyl Acetate
u9/m3
0.43
100-41-4
Ethylbenzene
ug/m3
0.4
142-82-5
He tane, N-
ug/m3
0.3
591-78-6
Hexanone,2-
ug/m3
38
67-63-0
Iso ro anol
ug/m3
3.1
1
78-93-3
Methyl Ethyl Ketone (2-Butanone)
ug/m3
0.35
J
75-09-2
Methylene Chloride
ug/m3
0.31
91-20-3
—Naphthalene
ug/m3
1
100-42-5
Styrene
ug/m3
1.6
127-18-4
Tetrachloroethylene
ug/m3
1.7
108-88-3
Toluene
ug/m3
ND
120-82-1
Trichlorobenzene, 1,2,4-
u9/m3
0.21
79-01-6
Trichloroeth lene
ug/m3
0.42
95-63-6
Trimethylbenzene, 1,2,4-
ug/m3
0.16
108-67-8
Trimeth Ibenzene, 1,3,5-
ug/m3
2.8
1
108-05-4
Vinyl Acetate
ug/m3
1.2
108-38-3
X lene, m-
ug/m3
0.47
95-47-6
Xylene, o-
ug/m3
North Carolina DEQ Risk Calmlalor

Risk for Individual Pathways
1
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: Brownfields # 17046-13-041
Exposure Unit ID: Indoor Air
DIRECT CONTACT SOIL AND WATER CALCULATORS
Receptor
Pathway
CarcinogenicRisk
Hazard Index
Risk exceeded?
Resident
Soil
0.0E+00
0.0E+00
NO
Groundwater Use*
NC
NC
NC
Non -Residential Worker
Soil
0.0E+00
0.0E+00
NO
Groundwater Use*
NC
NC
NC
Construction Worker
Soil
NC
NC
NC
Recreator/Trespasser
Soil
NC
NC
NC
Surface Water*
NC
NC
NC
VAPOR INTRUSION CALCULATORS
Receptor
Pathway
CarcinogenicRisk
Hazard Index
Risk exceeded?
Resident
Groundwater to Indoor Air
0.0E+00
0.0E+00
NO
Soil Gas to Indoor Air
0.0E+00
0.0E+00
NO
Indoor Air
1.5E-05
6.3E-01
NO
Non -Residential Worker
Groundwater to Indoor Air
0.0E+00
0.0E+00
NO
Soil Gas to Indoor Air
0.0E+00
0.0E+00
NO
Indoor Air
3.4E-06
1.5E-01
NO
CONTAMINANT MIGRATION CALCULATORS
Pathway
Source
Target Receptor Concentrations Exceeded?
Groundwater
Source Soil
Exceedence of 2L at Receptor?
NM
Source Groundwater
Exceedence of 2L at Receptor?
NM
Surface Water
Source Soil
Exceedence of 2B at Receptor?
NM
Source Groundwater
Exceedence of 2B at Receptor?
NM
Notes:
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk -based
closure.
3. NM = Not modeled, user did not check this pathway as complete.
4. NC = Pathway not calculated, required contaminant migration parameters were not entered.
North Carolina DEQ Risk Calculator

)sure Point Concentrations
lion Date: July 2023
s: May 2023 EPA RSL Table
ID: Brownfields # 17046-13-041
)sure Unit ID: Indoor Air
Indoor Air Exposure Point Concentration Table
Description of Exposure Point Concentration Selection:
IA-3 DUPLICATE Boxcar Events Center - Women's Bathroom - Eastern Side
Note: Chemicals highlighted in orange are non-volatile chemicals. Risks are calculated for these chemicals 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.
If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations
Exposure Point
Minimum
Maximum
Location of
Range of
Concentration
Screening
Potential
Potential
Rationale for
Concentration
Notes:
CAS Number
Chemical
Concentration
Concentration
Units
Maximum
Detection
Detection
Used for
Background
Toxicity Value
ARAR/TBC
ARAR/TBC
COPC Flag
Selection or
(ug/m)
(Qualifier)
(Qualifier)
Concentration
Frequency
Limits
Screening
Value
(Screening
Value
Source
(Y/N)
Deletion
Level) (n/c)
77
67-64-1
Acetone
119/m3
0.4
1
71-43-2
Benzene
ug/m3
0.5
V-05
56-23-5
Carbon Tetrachloride
ug/m3
0.89
67-66-3
Chloroform
ug/m3
0.98
74-87-3
Chloromethane
ug/m3
0.3
106-46-7
Dichlorobenzene,l,4-
ug/m3
2.2
B
75-71-8
Dichlorodifluoromethane
ug/m3
0.088
J
107-06-2
Dichloroethane,l,2-
ug/m3
0.66
1
156-59-2
Dichloroethylene, cis-1,2-
ug/m3
0.66
J
156-60-5
Dichloroeth lene, trans-1,2-
ug/m3
0.64
1
78-87-5
Dichloropropane, 1,2-
ug/m3
3.8
141-78-6
Ethyl Acetate
u9/m3
0.44
100-41-4
Ethylbenzene
ug/m3
0.49
142-82-5
He tane, N-
ug/m3
0.16
591-78-6
Hexanone,2-
ug/m3
40
67-63-0
Iso ro anol
ug/m3
2.9
1
78-93-3
Methyl Ethyl Ketone (2-Butanone)
ug/m3
0.37
J
75-09-2
Methylene Chloride
ug/m3
0.34
91-20-3
—Naphthalene
ug/m3
1.1
100-42-5
Styrene
ug/m3
1.9
127-18-4
Tetrachloroethylene
ug/m3
1.7
108-88-3
Toluene
ug/m3
ND
120-82-1
Trichlorobenzene, 1,2,4-
119/1113
0.18
J
79-01-6
Trichloroeth lene
ug/m3
0.42
95-63-6
Trimethylbenzene, 1,2,4-
ug/m3
0.15
108-67-8
Trimeth Ibenzene, 1,3,5-
ug/m3
2
1
108-05-4
Vinyl Acetate
ug/m3
1.2
108-38-3
X lene, m-
ug/m3
0.46
95-47-6
Xylene, o-
ug/m3
North Carolina DEQ Risk Calmlalor

Risk for Individual Pathways
1
Version Date: July 2023
Basis: May 2023 EPA RSL Table
Site ID: Brownfields # 17046-13-041
Exposure Unit ID: Indoor Air
DIRECT CONTACT SOIL AND WATER CALCULATORS
Receptor
Pathway
CarcinogenicRisk
Hazard Index
Risk exceeded?
Resident
Soil
0.0E+00
0.0E+00
NO
Groundwater Use*
NC
NC
NC
Non -Residential Worker
Soil
0.0E+00
0.0E+00
NO
Groundwater Use*
NC
NC
NC
Construction Worker
Soil
NC
NC
NC
Recreator/Trespasser
Soil
NC
NC
NC
Surface Water*
NC
NC
NC
VAPOR INTRUSION CALCULATORS
Receptor
Pathway
CarcinogenicRisk
Hazard Index
Risk exceeded?
Resident
Groundwater to Indoor Air
0.0E+00
0.0E+00
NO
Soil Gas to Indoor Air
0.0E+00
0.0E+00
NO
Indoor Air
1.7E-05
7.8E-01
NO
Non -Residential Worker
Groundwater to Indoor Air
0.0E+00
0.0E+00
NO
Soil Gas to Indoor Air
0.0E+00
0.0E+00
NO
Indoor Air
3.9E-06
1.9E-01
NO
CONTAMINANT MIGRATION CALCULATORS
Pathway
Source
Target Receptor Concentrations Exceeded?
Groundwater
Source Soil
Exceedence of 2L at Receptor?
NM
Source Groundwater
Exceedence of 2L at Receptor?
NM
Surface Water
Source Soil
Exceedence of 2B at Receptor?
NM
Source Groundwater
Exceedence of 2B at Receptor?
NM
Notes:
1. If lead concentrations were entered in the exposure point concentration tables, see the individual calculator sheets for lead
concentrations in comparison to screening levels. Note that lead is not included in cumulative risk calculations.
2. * = If concentrations in groundwater exceed the NC 2L Standards or IMAC, or concentrations in surface water exceed the
NC 2B Standards, appropriate remediation and/or institutional control measures will be necessary to be eligible for a risk -based
closure.
3. NM = Not modeled, user did not check this pathway as complete.
4. NC = Pathway not calculated, required contaminant migration parameters were not entered.
North Carolina DEQ Risk Calculator