17046_WLewisSt_VIR_20220315

Pyramid Environmental & Engineering, P.C. Project #2022-021
Model Linen — W. Lewis Street
SUB -SLAB VAPOR (SSV) ASSESSMENT REPORT
WEST LEWIS STREET BROWNFIELDS PROJECT AT 109, 111, 117-B1
& MODEL LINEN BROWNFIELDS PROJECTS AT 120 W. LEWIS STREET
GREENSBORO, NC (GUILFORD COUNTY)
Brownfields Site Name: # 17046-13-041 : West Lewis Street BFA
Brownfields Site Name: # 08007-04-041 : Model Linen BFA
Report Prepared for: AZ Development, LLC
Andy Zimmerman
111 W. Lewis Street, Greensboro, NC 27401
Email: [e-mail]
Phone: [phone]
Date Prepared: 03-15-2022
Report Submitted to: BP Project Manager: Ms. Sharon Poissant Eckard, PG
NCDEQ— DWM - Brownfields Program
1646 Mail Service Center, Raleigh, NC 27699-1646
Email: [e-mail]
Phone: [phone]
Report Prepared By: `````��
AL
1168
Michael G. Jone , P '
License #1 C)tiq X�,`�
�0i GA �\` -� %
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-125

Table of Contents
1.0
EXECUTIVE SUMMARY.................................................................................................. 1
2.0
INTRODUCTION.............................................................................................................
2
2.1
NCDEQ REQUESTED WORK.............................................................................................
4
2.2
BROWNFIELDS RECEPTOR SURVEY......................................................................................
7
2.3
SOIL ASSESSMENT...........................................................................................................
7
2.4
GROUNDWATER ASSESSMENT SUMMARY.............................................................................
7
2.5
SUB -SLAB VAPOR SAMPLING.............................................................................................
8
2.6
DATA GAPS...................................................................................................................
8
3.0
SCOPE OF WORK...........................................................................................................
9
4.0
SSV WORK PLAN SUMMARY.......................................................................................
10
4.1
INDOOR AIR SAMPLING METHODOLOGY............................................................................
10
4.2
CRAWL SPACE SAMPLING METHODOLOGY..........................................................................
10
5.0
W. LEWIS STREET SITE - SSV SAMPLING & RESULTS .....................................................
11
5.1
SSV & CRAWLSPACE SAMPLING.......................................................................................
11
5.2
CRAWL SPACE SAMPLING / 109 & 111 W. LEWIS STREET ....................................................
12
5.3
SSV SAMPLE RESULTS 115 W. LEWIS STREET...................................................................
12
5.4
SSV SAMPLE RESULTS 117 W. LEWIS STREET...................................................................
13
5.5
CRAWL SPACE SAMPLING / 117 B W. LEWIS STREET...........................................................
14
6.0
SAMPLE LOCATIONS & RESULTS - MODEL LINEN.........................................................
15
6.1
SSV SAMPLE RESULTS NORTHERN PART OF 120 W. LEWISSTREET......................................
16
6.2
SSV SAMPLE RESULTS SOUTHERN PART OF 120 W. LEWISSTREET........................................
17
7.0
NC BROWNFIELDS RISK ASSESSMENT..........................................................................
17
8.0
CONCLUSIONS.............................................................................................................
18
9.0
CLOSING......................................................................................................................20
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 CS Samples at 109 — 111 W. Lewis Street
Figure 7 :
Locations of SSV Samples at 115 — 117 W. Lewis Street
Figure 8 :
Locations of CS Samples at 117 B-1 W. Lewis Street
Figure 9 :
Locations of SSV Samples at 120 W. Lewis Street
Tables
Table 2.1 :
Property Use Summary (page 2)
Table 2.2 :
Chronology of Events : Model Linen & W. Lewis Street Sites (page3)
Table 2.3 :
Address & Building Use Descriptions (page 5)
Table 2.4 :
Proposed SSV Sampling Locations (page 6)
Table 5.0 :
SSV/CS Results - Lewis Street Brownfields Properties
Table 5.1 :
Crawlspace Sample Results for 109 & 111 W. Lewis Street (page 12)
Table 5.2 :
SSV results for 115 W. Lewis Street (page 13)
Table 5.3 :
SSV Results for 117 W. Lewis Street (page 13)
Table 5.4 :
Crawlspace Results for 117 B W. Lewis Street (page 14)
Table 6.0 :
SSV Sampling Results for 120 W. Lewis Street
Table 6.1 :
SSV Sample Results of Northern Half of 120 W. Lewis Street (page 16)
Table 6.2 :
SSV Sample Results of Southern Half of 120 W. Lewis Street (page 17)
Appendices
Attachment A:
NCDEQ Brownfields Letter (03-26-2021)
Attachment B :
1996 to 2020 Assessment Maps & Analytical Tables
Attachment C :
Site Photos, Sanborn Map 1950, map of Foundation Types
Attachment D :
Vapor Pin Instructions
Attachment E :
Work Plan 2.3 Text
Attachment F :
Field Sheets from Air Sampling (Lewis Street)
Attachment G :
Pace Analytical Report (Lewis Street)
Attachment H :
Field Sheets from Air Sampling (Model Linen)
Attachment I :
Pace Analytical Report (Model Linen)
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
NCBP ................North
Carolina Brownfields Program
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 III

Pyramid Environmental & Engineering, PC PYRAMID
1.0 Executive Summary
In the Fall of 2021, Pyramid was contacted by AZ Development to plan and complete Sub -Slab
Vapor (SSV) and Crawlspace air sampling at the properties located at the Lewis Street and Model
Linen Brownfields Sites. The location of these two sites are at addresses 109, 111, 115, 117, 117-
-B, & 120 West Lewis Street in Greensboro, Guilford County, NC. The sites were previously
operated as laundry and dry cleaning facilities during the 1950s. Since that time, all of the
properties were accepted into the NC Brownfields Program (NCBP) under agreements # 17046-
13-041 (for W. Lewis Street) and # 08007-04-041 (for Model Linen).
In 2020, during the process of combining Model Linen and West Lewis Street Brownfields
Agreements, the NCBP observed that no Vapor Intrusion (VI) assessment was completed for the
sites in the prior assessment. Due to this data gap, the NCBP required that a soil vapor survey be
conducted for all of the properties under both Brownfields Agreements prior to combining the
Brownfields sites.
On October 27, 2021, Pyramid completed the final version of the work plan which was approved
by the NC Brownfields Project Manager, and Pyramid was authorized to complete the work 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, Pyramid conducted the 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 and submitted to Pace for analysis.
After receiving access to the Model Linen Site, in January 2022, Pyramid collected SSV samples
at 120 West Lewis Street. The samples were collected in accordance with the approved work
plan for SSV sampling. The Model Linen SSV analytical results indicated high concentrations of
Tetrachloroethylene (PCE) were detected above the Non Residential SSV Screening Levels in four
of the Model Linen samples (SSV-14, SSV-17, SSV19, & SSV-21). All of the SSV samples showed
PCE above the IASL standard. Three low detections of Trichloroethylene (TCE) were detected
above the IASL and below the Non Residential SSV Screening Levels.
Due to the PCE detections in the SSV and crawlspace samples at both sites, Pyramid reviewed the
previous assessment data from 2003, 2004, and 2014 which showed PCE and TCE detections in
groundwater. Since PCE concentrations were detected in groundwater and in the SSV completed
at both sites, the site should be transferred into the Drycleaner Solvent Cleanup Act (DSCA)
Program for further assessment and vapor mitigation.
Indoor air sampling is recommended in the Boxcar and events spaces, and additional crawlspace
samples are recommended to confirm concentrations in several areas (CS-2, CS-3, CS-12, and CS-
13) at the W. Lewis Street Brownfields Site.
AZ Development / Model Linen & West Lewis St. Brownfields Sites / SSVAssessment Report Page 1
Pyramid Environmental & Engineering, PC-2022-021 03-15-2022

Pyramid Environmental & Engineering, PC PYRAMID
2.0 Introduction
On behalf of AZ Development, Pyramid Environmental & Engineering, PC (Pyramid) reviewed the
NCDEQ letter dated March 26, 2021, requesting additional vapor intrusion assessment at the
referenced Brownfield site addresses. The NCDEQ letter is presented in Appendix A for your
reference. The NC Brownfields Program requested a Work Plan to provide the NCDEQ with
details of the proposed sub -slab vapor (SSV) and crawl space (CS) vapor assessment requested
by the Department. The site assessment history is summarized in this report. At the time of this
report, efforts were underway to merge the Brownfield agreements for the following two
Brownfields sites:
• # 17046-13-041 : The West Lewis Street BFA is being written to combine the West Lewis
Street site with the Model Linen Brownfields Site.
• # 08007-04-041 : The Model Linen BFA was previously recorded, and review of the
document showed that changes were necessary to the Brownfields Plat.
At this time, the sites have not qualified for the Drycleaner Solvent Cleanup Act (DSCA) Program
for further assessment and mitigation. A decision whether the sites should be in the DSCA
program is being discussed. This SSV assessment addresses the NC Brownfields Program
concerns about possible vapor intrusion from solvent or volatile organic contamination, and fills
a "data gap". The following table presents the property information for the two sites.
Table 2.1 — Property Use Summary
NCBP Project #
Address
Parcel #
Acreage
Former Use
REC
Current Use
17046-13-041
109-111 W. Lewis
7864-63-1801
0.24
Furniture Store
PCE & TCE in GW
Pub & Office Spaces
(W. Lewis BF)
115-117 W. Lewis
7864-53-9880
0.48
Dry Cleaners
PCE & TCE in GW
Pub, Brewery, distillery
08007-04-041
120 W. Lewis St.
7864-64-0041
0.50
Former Laundry
PCE & TCE in GW
Arcade, Bars, &
(Model Linen)
I
I
I
I / Dry Cleaners
I
I Events Center
As requested by the NC Brownfield Program (NCBP), this brief summary of the site history was
completed as part of the SSV Work Plan. Pyramid met with the building owner at the properties
to access each building areas and review what is known about the foundations. The buildings
have differing foundation types that affected the collection of vapor samples. The following table
presents brief history of the Brownfields Site assessment for the two sites.
AZ Development / Model Linen & West Lewis St. Brownfields Sites / SSVAssessment Report Page 2
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Pyramid Environmental & Engineering, PC PYRAMID
Table 2.2
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 presence of prior detections of PCE in the groundwater and soil at the site, and the
absence of comprehensive SSV and Crawlspace analytical data the NCDEQ required additional
assessment to fill the data gap for both Brownfields Sites. Selections of maps and tables from
the above -referenced reports are included in Appendix B.
AZ Development / Model Linen & West Lewis St. Brownfields Sites / SSVAssessment Report Page 3
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Pyramid Environmental & Engineering, PC PYRAMID
2.1 NCDEQ Requested Work
The NC Brownfields Program requested additional sub -slab vapor data for both the Model Linen
and West Lewis Street properties based on the detection of petroleum compounds benzene,
naphthalene, PCE, TCE, and 1-methylnaphthalene in groundwater at 120 Lewis Street (MW-3).
There was also a detection of trichloroethylene (TCE) in the groundwater at MW-3 (1.2 µg/L).
Based on these VOC detections, the NCDEQ determined that there was a "data gap" for sub -slab
vapor data. The historical data from one sub -slab sample collected in 2014 in the southeast area
of 109 W. Lewis indicated a low concentration of TCE and other volatile organic compounds
(VOCs), including the daughter products of TCE, which were present in the 2014 SSV sample. The
VOCs include chlorinated compounds that are considered contaminants of concern (COCs). The
NCDEQ Brownfields program requested SSV/CS sampling in the buildings to assess vapor
intrusion risk, and the letter requesting the assessment is presented in Appendix A.
Pyramid researched additional site history and has summarized the historical soil and
groundwater data with excerpts from the reports in Appendix B. The prior reports show levels
of petroleum and chlorinated solvents present on the site in prior soil and groundwater analyses.
At this time, no new structures or foundation changes are planned. The current property uses
include several pubs with food service, a craft brewery, a distillery, offices, storage, and a video
game arcade, and event spaces. The property uses will remain consistent with the current use
for the foreseeable future, and no new construction or residential uses are planned.
Pyramid planned the SSV sampling with the building owner and tenants. The sample areas are
separated by structural walls and differing foundation types. In preparing the SSV and crawl
space sampling work plan, these factors were taken into consideration. The owner's information,
photographs, and maps were helpful in understanding the foundations, and are included in
Appendix C. The following Figures are provided as further explanation of the work.
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 Proposed Sample Locations
Figure 6 - Locations of CS Samples at 109 —111 W. Lewis Street
Figure 7 - Locations of SSV Samples at 115 —117 W. Lewis Street
Figure 8 - Locations of CS Samples at 117 B-1 W. Lewis Street
Figure 9 - Locations of SSV Samples at 120 W. Lewis Street
AZ Development / Model Linen & West Lewis St. Brownfields Sites / SSVAssessment Report Page 4
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Pyramid Environmental & Engineering, PC PYRAMID
The sampling strategy for each location is explained in the table below, with the foundation type
and sample method described.
Table 2.3
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 was 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.
AZ Development / Model Linen & West Lewis St. Brownfields Sites / SSVAssessment Report Page 5
Pyramid Environmental & Engineering, PC-2022-021 03-15-2022

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Table 3 - proposed S;SV Samples Summary
The locations of the Samples are shown on Figure 5
Sample
Number
Address / Sample Location in Building
Sample Objective
Sample
Type
Sample
Namat
Sample
Depth
Analytical
program
TCEAnalyticulRange
1
109 W. Lewis St.: Bar
SG%VI Initial Assessment
Crawl Space
CS-1
61'
Level II
<0.196, u8Jm3;
2
109 W. Lewis St.: Bar
SG%VI Initial Assessment
Crawl Space
CS-2
C'.
Leval II
<0.196. ugJm3;
3
111 W. Lewis: Offices
SG%VI Initial Assessment
Crawl ,';pace
CS-3
0-
Lew-d II
<0.196 ugJm3
4
111 W. Lewis: Offices
SG% VI Initial Assem.ment
Crawl Rpace
CS-4
S"'
Leval II
<0.196, ug/m3:
5
111 W. Lewis: Offices
SG%VI Initial Assessment
Crawl Space
CS-5
6"'
Level II
<0.196, u81m3
6
111 W. Lewis: Offices
SG/VI Initial Assessment
Crawl Space
CS-6
C'.
Level II
<0.196 u„Jm3
7
115 W. Lewis : Distillery
SG%VI Initial Asses: ,ment
SSV
S.;V-7
G"'
Level II
<0.194. uerJm3;
B
115 W. Lewis : Distillery
SG%VI Initial Aoe%s:ment
SW
SSV 8
h'.
Level II
<0.19h, ugJm3
9
117 W. Lewis St.: Brewery
SG%VI Initial Assessment
SSV
SSV 9
6'.
Leval II
<0.196, u81m3
10
117 W. Lewis St.: Brewery
SG/VI Initial Assessment
SSV
SSV-10
G"'
Level II
<0.19G ugJm3;
10 Dup.
117 W. Lewis St.: Brewery
Duplicate - Sample Day 1
5SV
SSV-10 Dup
C"'
Level II
<0.19f.. ugJm3,
31.
117 W. Lewis St.: Brewery
SG%VI Initial A,ses,5:ment
SSV
SK _11
h"'
Lead II
<0.19h, ugJm3
3.2:
117 B1 W. Lewis St.: Brew Pub
SG%VI Initial A:;ser;�:ment
Crawl Space
C5 12
Air
1-mol II
<0.196, u8Jm3;
I
117 B1 W. Lewis St.: Brew Pub
SG/VI Initial Assessment
Crawl Space
CS 13
Air
Level II
<0.196, ugJm3;
14
120 W. Lewis (N) :: NW Corner
SG/VI Initial Assessment
SW
°"V-14
d"
Lvv.c!l II
<0.196, ug/m3;
1S
120 W. Lewis (N) :: NE Corner Courtyard
SG%VI Initial Assessment
SSV
SSV-1'5
6'.
Level II
<0.196. ugJm3;
169
120 W. Lewis (N) :: SE Corner
SG/'VI Initial Assessment
SSV
SSV-1E5
61'
Level II
<0.196. ugJm3;
17'
120 W. Lewis (N) :: SW Corner
SG%VI Initial Assessment
5SV
SSV-17
C"'
Level II
4.196. ugJm3;
1°s
120 W. Lewis - BOXCAR: NW corner
SG/VI Initial Assessment
SSV
51SV-'18
61'
Lv.va:l II
<0.196, ugJm3
153
120 W. Lewis - BOXCAR: N central
SG%VI Initial Assessment
55V
5SV-19
6"'
Leval II
<0.196�JL'3;
20
120 W.Lewis- BOXCAR:NEcorner
SG/VlInit:ial Assessment
55V
SSV-20
6'.
Level11
<0.196�JL3;
21.
120 W. Lewis - BOXCAR : SE corner
SG/VI Initial Assessment
III' SV
SSV-21
Li".
Loved II
<0.196, ugJm3;
22'
120 W. Lewis - BOXCAR: S Central
SG%VI Initial Asse-s:ment
Y;V
SW_22
h"'
Level II
<0.196, ud/M:1;
2.l;
120 W. Lewis: BOXCAR: SW Corner
SG%VlInitial Asseaaument
SW
SSV-2:3
h"
Lnva^III
<0.1Ih.�g/M3;
23 Dup
120 W. Lewis: BOXCAR: SW Corner
Duplicate:: Sample Day 2
55V
SSV-23 •Dup
6'.
Level II
<0.1967 ug/m3;
There are no basement, stairwells, elevator_, or residential property use in the Brownfields Property Buildings.
0

Pyramid Environmental & Engineering, PC PYRAMID
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 surface water
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.
In addition, Pyramid completed a search for other dry cleaner facilities within % mile of this
location. The nearest DSCA site is Wades Dry Cleaners located 300 feet east from the Model Linen
site and located at a lower elevation. The Model Linen and W. Lewis Brownfields sites are
topographically at a high point in the surrounding area and do not receive surface water flow
from other properties. The map from Hart& Hickman showing the Wades Dry Cleaner site
(DC410052) is presented in Appendix B along with the Former Odorless Dry Cleaners site. The
resulting map of locations from the DSCA Program map is presented as Figure 3.
2.3 Soil Assessment
The Model Linen UST removed in 1996 was investigated and the details are presented in
Appendix B. The 2013 soil assessment prior to Brownfields Program acceptance showed
petroleum and chlorinated solvents present at the sites and recommended additional
assessment to evaluate volatile organic compounds (VOCs) beneath the buildings.
2.4 Groundwater Assessment Summary
Previous groundwater assessment was reported and identified benzene, naphthalene, PCE, TCE,
and 1-methylnaphthalene above NCAC 2L groundwater standards. A typical conceptual site
model for the site includes shallow groundwater between 8-feet to 11-feet below land surface
(BLS), within the surficial aquifer. The near surface soil and saprolite aquifer generally persists to
a depth or approximately 45-55 feet and is followed by weathered granitic rock. The bedrock in
the Greensboro area is generally encountered between 55 to 65 feet below land surface,
depending on differential weathering. Dissolved Constituents of Concern (COCs) were detected
in the shallow aquifer zone. The 2013 potentiometric surface map is presented as Figure 4. The
VOCs detected in groundwater prompted the NCDEQ to request the SSV sampling work plan.
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2.5 Sub -Slab Vapor Sampling
The former Model Linen operated on both the north and south sides of Lewis Street at 120 Lewis
Street (north side) and 117 Lewis Street (south side). The NC Brownfields Program requested
SSV data for both the Model Linen and West Lewis Street properties. The Brownfields Program
requirements are based on the detection of petroleum and solvents in the groundwater at the
Model Linen Site and the lack of sufficient sub -slab vapor assessment data. The historical data
from one sub -slab sample collected in 2014 in the southeast area of 109 W. Lewis Street indicated
a low concentration of TCE and other VOCs, including the daughter products of TCE present in
that sample. The NC Brownfields Program requested additional SSV sampling in each of the
buildings to assess vapor intrusion risk. Future development includes no new buildings on the
properties, no planned residential use, nor removal of buildings or foundations. Although there
is no current residential use, the Brownfields Agreement was to be written to allow residential
use of the properties as a potential future use. Each building is connected to public utilities
including water, sewer, Duke Energy electric, telecommunications, and natural gas.
2.6 Data Gaps
The Brownfields Program identified the lack of SSV data as a data gap and required additional
SSV assessment data to be collected for the buildings at both sites. The Work Plan included the
methods, procedures, and quality assurance used for the recent SSV assessment. The property
use and additional considerations are 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 Brew 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
• Building square footage is report on Figure 5 and no buildings are being added
• There are two other dry cleaning facilities reported within 300 feet of the site
The subsurface and crawl space sampling locations and rationale are described in the work plan
document previously submitted to the NCBP.
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3.0 Scope of Work
The work scope is to provide SSV/CS sample collection and analysis from the various structures
on the two Brownfields sites, and the locations are shown on Figure S. The sample type depends
on the floor configuration and whether it is a crawlspace or slab on grade. The primary tool used
is the Vapor PinTI which is a stainless steel device which allows penetration of the concrete slab
or 4" thick wooden floor, and seals the penetration allowing a vapor sample to be collected from
the air -space below. The VaporPinT"^ sample devices were installed and left in place to be used
again if needed.
Vapor sampling procedures were detailed in the approved work plan, and the methods used were
the same as proposed. No sealants or glues were used, and the SSV installations all passed the
helium leak check at each location. The materials used were consistent with the work plan and
the details of each installation and sampling were recorded in the field form for each location
sampled. The PID readings and other observations made during the SSV installations and
sampling of the SSV/CS samples were recorded and are presented in this report.
The final SSV/CS sample locations are shown on Figure 5. The SSV sampling was completed using
Vapor PinT"^ devices in each sample location, and the Vapor PinT"^ description and installation
procedures are summarized in Appendix D. Vapor sampling was arranged with the property
owners and each tenant, and the work was completed during normal business hours. After
installation of the VaporPinsT"^, each pin was purged, sealed, and protected with a stainless steel
cover.
The sample collection required 25 cylinders from the laboratory which required planning and
took several weeks to acquire. The field collection of air samples was documented for each
location on the field forms, and a duplicate sample was collected for each field day. The work
was scheduled in December and was delayed in the Boxcar (Model Linen site) due to access
concerns. A duplicate sample was obtained at location SSV-11 near the words "Dry Cleaners"
on the old Sanborn Map. A second Duplicate was collected at SSV-23 which was closest to the
groundwater detection of petroleum and TCE in MW-3. These were the most likely areas for
detections of chlorinated solvents at the two Brownfields sites.
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4.0 SSV Work Plan Summary
Pyramid completed the SSV/CS Work Plan which included the comments and changes required
by the NCDEQ Brownfields Program. Once the Work Plan was approved, sampling materials and
Pace Analytical laboratory sample cylinders and TO-15 analyses were arranged. Each sample
point contained a separate vapor pin which was installed by either drilling through the concrete
slab of the building, or drilling into the crawl space. Each vapor pin sample point was checked
for leaks using helium flooded containment and helium detector prior to being sampled. In
addition, duplicate samples were collected for each day air samples were collected. A detailed
description of the methodology for SSV Sampling, Indoor Air Sampling, and Crawl Space Sampling
is included in the Work Plan presented in Appendix E. The SSV sampling was conducted using
separate Vapor PinT" devices installed the concrete or thick wooden floor. Prior to sampling,
each vapor pin was purged and checked for leaks.
4.1 Indoor Air Sampling Methodology
The initial sampling plans did not include any indoor air samples. The crawlspace samples
collected are considered indoor air samples by DEQ for comparison with the appropriate IASLs.
It is possible that indoor air samples will be necessary in the future. The work plan in Appendix E
lists the details that may be required in the future should indoor air sample be needed.
4.2 Crawl Space Sampling Methodology
The accessible crawl space sample locations are designated CS-12 and CS-13. Samples CS-1
through CS-6 were collected below a substantial 4-inch thick wooden floor, and are considered
inaccessible crawl space samples. Sampling procedures included :
• 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
• 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-12 and CS-13.
• There is a perimeter concrete wall and foundation piers in the crawl space area
• For CS-1 through CS-6, the thick wooden floor will be penetrated with VaporPins'
These samples were all collected as proposed and there were no significant changes from the
work plan location or procedures.
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5.0 W. Lewis Street Site - SSV Sampling & Results
The W. Lewis Street Brownfields site (BFA # 17046-13-041) is located on the south side of W.
Lewis Street, and contains several buildings. The site contains one building with a wooden floor
(addresses 109 & 111 W. Lewis Street), two building areas separated by a concrete wall with a
concrete slab over soil ( 115 & 117 W. Lewis St.), and one building which has a wooden floor over
an open crawlspace (117-B W. Lewis Street). Currently these spaces are occupied by transient
tenant workers and customers for uses included a co -working and meeting space, a distillery, a
brewery, and brew pub. The field forms are presented in Appendix F for each sample location,
and the Pace Analytical results are presented in Appendix G.
5.1 SSV & Crawlspace Sampling
To access the area beneath the wooden floors and concrete slabs, Pyramid drilled and installed
VaporPinT" devices according to manufacturer instructions. Before starting with installation of
VaporPinsT"^ in the thick wooden floor area, Pyramid consulted with the manufacturer to confirm
that the devices were approved for this purpose. The floor was composed of an upper 3.5-inch
thick planking and a %-inch plywood sub -floor over joists. The manufacturer approved the use of
the vapor pins for installation in this 4.25 thick wooden floor system, as well as the 4 to 6-inch
thick concrete slab floors at the other SSV locations in 115 & 117 West Lewis Street. The SSV/CS
sample ports were installed on December 14, 2021. Each vapor pin was secured with a tight-
fitting plastic cap on the sample point, and the stainless steel lid was secured at the surface.
Pyramid returned on December 15, 2021, to collect the SSV/CS samples as proposed in the
workplan. Each sample location was set-up with the tubing secured to the VaporPinT"", the tubing
and connections contained in a sealed plastic tote, flooded with helium, and a leak check was
performed at each location. Each location was purged using the three-way valve and syringe to
remove 1200 milliliters of air which was placed in a TedlarT" Bag. After sealing the tubing, the
TedlarT"^ bag was compressed and the helium meter was used to read the helium level in the
TedlarT" bag. The leak check for each samples showed no helium was detected in the TedlarT""
bag. Once the leak check was performed, the samples were collected by opening the sample
valve and recording the vacuum readings as the samples were collected. The flow -controllers
were in place for all 6-liter cylinder sample containers, and the samples were collected over a 20
to 40 minute period.
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The sample cylinder valves were closed at about 8 inches of vacuum remaining, and were secured
with the stainless steel cap on each cylinder. The samples were labelled, and the sample
documentation was completed at the site. The samples were packaged in the Pace shipping
boxes, and shipped FeclEx using standard chain -of -custody procedures. The analyses requested
were the TO-15 Low Level analyses. A summary Table of the West Lewis Street Brownfields Site
are summarized in Table 5.0 in the Tables Section of this report. The results for the Lewis Street
Brownfields Site samples are discussed further in the following sections.
5.2 Crawl Space Sampling / 109 & 111 W. Lewis Street
As defined in the work plan, two (2) samples (CS-1 & CS-2) were collected at 109 W. Lewis Street
and four (4) samples (CS-3, CS-4, CS-5, CS-6) were collected at 111 West Lewis Street. The sample
location map is presented as Figure 5, and the specific sample locations are shown on Figure 6.
Copies of the data sheets documenting the installation, floor thickness, leak check, length of the
test, PID readings, and crawl space observations are included in Appendix F. The results from
the air samples collected at 109 and 111 W. Lewis Street are presented in Appendix G, and the
results are summarized in the table below.
Table 5.1
Crawlspace Sample Results / 109 & 111 W. Lewis Street
Non -Res. SSV
Sample ID
CS-1
CS-2
CS-3
CS-4
CS-5
CS-6
Screening levels
IASL
ug/m3
ug/m3
ug/m3
ug/m3
ug/m3
ug/m3
ug/m3
ug/m3
Benzene
1.5
3.0
2.7
1.1
1.1
1.2
160
1.6
Trichloroethylene (TCE)
ND
3.3
ND
ND
ND
ND
180
1.8
ug/m3 = Micrograms per cubic meter Bold — values are above IASL standards
ND = Not detected above laboratory reporting standards
The concentrations of benzene were detected in CS-2 and CS-3 at concentrations just above the
Indoor Air Screening Level (IASL) but below the Non -Residential Soil -Gas / SSV Screening Levels.
In CS-2, Trichloroethylene (TCE) was detected concentrations just above the IASLs but below the
Non -Residential Soil -Gas / SSV Screening Levels. All other compounds were either non -detect or
were detected below the IASL levels.
5.3 SSV Sample Results / 115 W. Lewis Street
On December 14, 2021, Pyramid mobilized to 115 W. Lewis Street to install the VaporPinsTm at
each location proposed in the Work Plan. Two (2) sample locations (SSV-7 and SSV-8) were
collected at 115 W. Lewis Street, and the locations are shown on Figure 5 and Figure 7.
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A copy of the field data sheets documenting the installation, development, leak check, PID
readings, duration of sample collection, and observations are included in Appendix F. A summary
of the compounds detected at 115 W. Lewis Street are summarized in the table below. The Pace
Analytical lab report for the samples is included in Appendix G.
Table 5.2
SSV Sample Results / 115 W. Lewis Street
Sample ID
SSV-7
ug/m3
SSV-8
ug/m3
Non Res. SSV Screening
level ( ug/m3)
Indoor Air Screening level
( IASL) ug/m3
Benzene
ND
2.7
160
1.6
Chloroform
3.5
ND
53
0.53
Tetrachloroethylene (PCE)
ND
69.1
3500
35
ug/m3 = Micrograms per cubic meter Bold — values are above Non -Res. SSV standards
ND = Not detected above laboratory reporting standards
The concentrations detected in the SSV samples collected in this concrete slab area were
compared with the Non -Residential Screening Levels. Concentrations detected were below the
non-residential screening levels for all compounds. The detected levels of benzene, chloroform,
and PCE were above the IASLs; however, these lower limits do not apply to this space. In
additional, the detection of ethanol in SSV-8 indicates that some level of the distillery products
was detected. All detected concentrations were below the Non -Residential Soil -Gas/ SSV
Screening Levels. All other compounds were below detections limits or below the IASLs.
5.4 SSV Sample Results / 117 W. Lewis Street
On December 15t", 2020, Pyramid also collected SSV-9, SSV-10, SSV-11, and SSV-11 Dup air
samples. The duplicate sample collected was near the location of the Sanborn Map label Dry
Cleaners. The specific sample locations are shown on Figure 5 and Figure 7. Copies of the data
sheets for the samples are included in Appendix F, and the Pace Analytical report for the samples
is included in Appendix G. A summary of the compounds detected at 117 W. Lewis Street are
summarized in the table below.
Table 5.3
SSV Sample Results / 117 W. Lewis Street
Sample ID
SSV-9
ug/m3
SSv-10
ug/m3
SSV-11
ug/m3
SSV-11 DUP
ug/m3
Non Res. SSV Screening
levels (ug/m3)
(IASL)
ug/m3
Chloroform
ND
1.9
1.7
1.9
53
0.53
2-Propanol
870
2,690
23.4
28.9
1800
180
Tetrachloroethylene (PCE)
130
177
46.5
52.9
3500
35
Trichloroethylene (TCE)
ND
ND
2.3
2.5
180
1.8
ug/m3 = Micrograms per cubic meter Bold — values are above Non -Res. SSV standards
ND = Not detected above laboratory reporting standards
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The concentrations of 2-Propanol in SSV-9 is above the Non -Residential Soil -Gas / SSV Screening
Levels; however, this isopropyl alcohol concentrations is likely related to the brewing of beer.
The presence of the brewery in this space is the most likely source of the isopropanol detected,
and may be related to infiltration of liquids into the subsurface from drains or washdown of the
slab. Although PCE was detected in all three samples and the duplicate sample the levels were
below the SSV non-residential standard. Trichloroethylene (TCE) was present at concentrations
and below the Non Residential standards. All other compounds were either not detected, or
below the IASL levels.
5.5 Crawl Space Sampling / 117 B W. Lewis Street
On December 15th, 2020, Pyramid also collected crawlspace samples under the brew pub located
at 117-B W. Lewis Street. As defined in the work plan, two sample CS-12 and CS-13 were
collected at the locations shown on Figure 5 and Figure 8. Copies of the field data sheets are
included in Appendix F, and the Pace Analytical laboratory report is presented in Appendix G. A
summary of the compounds detected is presented in the table below.
Table 5.4
Crawlspace Sample Results / 117-B W. Lewis Street
Sample ID
CS-12
ug/m3
CS-13
ug/m3
Non Res. SSV Screening levels
ug/m3
IASL
ug/m3
Tetrachloroethylene (PCE)
381
76
3500
35
ug/m3 = Micrograms per cubic meter Bold — values are above IASL standards
ND = Not detected above laboratory reporting standards
The detected concentrations of PCE in CS-12 and CS-13 were detected at concentrations above
the Indoor Air Screening Level (IASL) but below the Non -Residential Soil -Gas / SSV Screening
Levels. All other compounds were either not detected or were below the IASL levels.
It is important to note that according to DEQ guidance, the overall risk regarding air samples is
to be based on the effects to human health as calculated through the July 2020 DEQ Risk
Calculator rather than screening levels.
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6.0 Sample Locations & Results — Model Linen
The Model Linen Brownfields site (BFA # 08007-04-041 ) is located on the north side of W. Lewis
Street. The former Model Linen site contains one building with several dividing walls and a
courtyard area at the northeast corner of the property. The flooring over the entire area is slab
on grade construction on top of soil. At the time of the SSV assessment, the area was being
renovated to serve as an event space in the northern % of the building, and the southern half was
still used as the Boxcar Arcade and bar. Currently these spaces are occupied by transient tenant
workers and customers. The field forms completed for each sample location installation for the
SSV/CS sample devices (VaporPinsT"°) are presented in Appendix H and the Pace analytical results
are presented in Appendix I.
To access the soil vapors below the slab, Pyramid drilled and installed VaporPinT", devices
according to manufacturer instructions. The SSV sample ports were installed on Friday January
14, 2022, and each vapor pin was secured with a tight -fitting plastic cap on the sample point, and
the stainless steel lid was secured at the surface.
Pyramid returned on January 19, 2022, to collect the SSV/CS samples as proposed in the
workplan. Each sample location was set-up with the tubing secured to the VaporPinT"", the tubing
and connections contained in a sealed plastic tote, flooded with helium, and a leak check was
performed at each location. Each location was purged using the three-way valve and syringe to
remove 1200 milliliters of air which was placed in a TedlarT" Bag. After sealing the tubing, the
TedlarT"^ bag was compressed and the helium meter was used to read the helium level in the
TedlarTm bag. The leak check for each samples showed no helium was detected in the TedlarT"^
bag. Once the leak check was performed, the samples were collected by opening the sample
valve and recording the vacuum readings as the samples were collected. The flow -controllers
were in place for all 6-liter cylinder sample containers, and the samples were collected over a 20
to 40 minute period. The sample cylinder valves were closed at about 8 inches of vacuum
remaining, and were secured with the stainless steel cap on each cylinder. The samples were
labelled, and the sample documentation was completed at the site. The samples were
repackaged in the Pace shipping boxes, and shipped FeclEx using standard chain -of -custody
procedures. The analyses requested were the TO-15 Low Level analyses.
The analytical results for 120 Lewis Street are summarized on Table 6.0 included in the Tables
Section of this report. The results for the Model Linen Brownfields Site samples are presented in
the following sections.
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6.1 SSV Sample Results / Northern Part of 120 W. Lewis Street.
In December 2021, Pyramid awaited access to the 120 W. Leis Street site before planning the
VaporPin'll installations. After receiving property owner approval, installation of the SSV points
were completed on January 14, 2022. The SSV locations in the northern area of the Boxcar
events center were completed as proposed in the work plan with four locations (SSV-14, SSV-15,
SSV-16 and SSV-17) installed in the northern part as shown on Figure 5 and Figure 9. After a
holiday delay and an ice delay, on January 19, 2022, Pyramid collected the SSV samples at each
location at the site. A copy of the data sheets documenting the installation, purging, leak check,
PID readings, length of the test, final vacuum readings, and other observations are included in
Appendix H. The analytical lab report for the samples is included in Appendix I.
Table 6.1
SSV Sample Results / Northern Part of 120 W. Lewis Street
Sample ID
SSV-14
ug/m3
SSv-15
ug/m3
SSV-16
ug/m3
SSV-17
ug/m3
Non Res. SSV
Screening levels (ug/m3)
(IASL)
ug/m3
Chloroform
ND
2.9
ND
ND
53
0.53
Tetra chIoroethylene (PCE)
10,100
254
1,160
10,500
3500
35
Trichloroethylene (TCE)
9.5
ND
ND
ND
180
1.8
Yellow Values are above Non Residential SSV Screening Levels Bold — values are above IASL standards
ND -Not detected above laboratory reporting standards ug/m3= Micrograms per cubic meter
The SSV results for the northern half of the former Model Linen site all showed elevated levels of
PCE. The concentrations of PCE were above the Non -Residential SSV Screening Level in SSV-14
and SSV-17, with results showing PCE above 10,000 ug/m3 below the concrete slab. These results
indicated a former source of PCE used at the site during the time of the former Model Linen Dry
Cleaners.
The results for all other parameters within the analysis were affected by the dilution required to
quantify the elevated PCE concentrations. The results showed few other parameters as shown in
the table above. The results were compared to the non-residential SSV Screening Levels and the
PCE levels were above the screening levels. A quick calculation was performed using the
Brownfields Risk Calculator for the site, and the results were also above the site specific criteria
which calculated to the same non-residential screening levels stated above. Trichlorethylene
(TCE) was detected in SSV-14, but below the non-residential screening level. Other compounds
were below the method detections limits (which were elevated by dilution) or were not detected.
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6.2 SSV Sample Results / Southern Part of 120 W. Lewis Street.
On January 14, 2022, six (6) SSV locations were installed in the southern part (Arcade and Event
Space of the Boxcar (SSV-18, SSV-19, SSV-20, SSV-21, SSV-22, and SSV-23). These locations are
show on Figure 5 and Figure 9. After a holiday delay and an ice delay, on January 19, 2022,
Pyramid collected the SSV samples at each location at the site. A copy of the data sheets
documenting the installation, purging, leak check, PID readings, length of the test, final vacuum
readings, and other observations are included in Appendix H. The analytical lab report for the
samples is included in Appendix I.
Table 6.2
SSV Sample Results / Boxcar Area - 120 W. Lewis Street
Sample ID
SSV-18
ug/m3
SSV-19
ug/m3
SSV-20
ug/m3
SSV-21
ug/m3
SSV-22
ug/m3
SSV-23
ug/m3
SSV-23
(Dup)
ug/m3
Non Res.
Screening
levels
IASL
ug/m3
Chloroform
3.4
ND
ND
ND
ND
ND
ND
53
0.53
Tetrachloroethylene (PCE)
105
4,020
1,300
3,750
1,710
471
454
3500
35
Trichloroethylene (TCE)
ND
I ND
I ND
I ND
I ND
1 8.7
1 9.1
180
1.8
Yellow Values are above Non Residential SSV Screening Levels Bold — values are above IASL standards
ND -Not detected above laboratory reporting standards ug/m3= Micrograms per cubic meter
In all of the SSV Samples in the Boxcar area, concentrations of PCE were detected at levels above
the IASL, and only at SSV-19 and SSV-21 were the PCE levels detected above the Non -Residential
Screening Levels. The primary and duplicate sample at SSV-23 (SSV-23 and SSV-23 Dup.) were
similar in detected compounds and concentrations showing appropriate sample collection was
achieved. The compound TCE was present but below the Non -Residential Soil -Gas Screening
Levels. All other compounds were either not detected (presumably due to high PCE
concentrations and the elevated dilution of the samples), or not detected above method
detections limits.
7.0 NC Brownfields Risk Assessment
As part of the data evaluation for the two sites, Pyramid processed the data for the site thorough
the NC DEQ Risk Calculator for PCE and TCE. The evaluation of the primary two Constituents of
Concern (PCE and TCE) resulted in a site risk similar to the Non -Residential Soil -Gas Screening
level of 3,500 ug/m3 for PCE and 180 ug/m3 for TCE.
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The IASLs were also confirmed to be close to 35 ug/m3 for PCE and 1.8 ug/m3 for TCE. Based on
the risk data evaluation, and the risk to tenants, workers, and customers, Pyramid recommends
collecting additional air samples in each space as described below :
West Lewis Street Brownfields Site :
• Indoor air samples & repeat crawlspace samples at CS-2 and CS-3 locations due to
benzene and TCE concentration detections.
• Indoor air samples & repeat crawlspace samples at CS-12 and CS-13 locations due to PCE
concentration detections.
Model Linen Brownfields Site :
• Indoor air samples at Model Linen locations near the SSV Sample locations SSV- 14, SSV-
17, SSV-19, & SSV-21 which displayed elevated PCE concentrations in SSV samples.
Due to the prior use of both properties as laundry and drycleaner facilities, and the detected
presence of PCE and TCE in groundwater and in the SSV samples, these sites are good candidates
for the DSCA program. AZ Development/Pyramid request that the NCDEQ evaluate the data for
the Model Linen site and the W. Lewis Street site for possible entry into the DSCA Program for
assessment, risk evaluation, and potential vapor mitigation.
8.0 Conclusions
Pyramid has completed the Sub Slab Vapor (SSV) assessment of the Model Linen and West Lewis
Street Brownfields sites as directed by AZ Development, LLC, and the NCDEQ Brownfields
Program. The investigation results are summarized below.
• Previous soil and groundwater assessment was conducted at the Model Linen and West
Lewis Brownfields sites. In 2004 and 2014, low concentrations of PCE and TCE were
detected in the groundwater at each of these Brownfields sites.
• The previous assessments also provided a receptor survey of the area indicating that in
2004 there were no sensitive receptors in the area and no water supply wells within
1,000 feet of the properties.
• 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.
AZ Development / Model Linen & West Lewis St. Brownfields Sites / SSVAssessment Report Page 18
Pyramid Environmental & Engineering, PC-2022-021 03-15-2022

Z
Pyramid Environmental & Engineering, PC PYRAMID
• The research into nearby dry cleaner facilities indicated two nearby DSCA accepted sites.
The DCSA sites are Wades Dry Cleaners located 300 feet to the east, and Odorless Dry
Cleaners located about 300 feet southwest of the site.
• The work plan was prepared as requested by the NCBP for SSV assessment at both
Brownfields sites. The work plan was revised as directed by the NCDEQ and approved in
October 2021. The work plan implementation required property access to the Boxcar,
obtaining the necessary VaporPinsT"° and other equipment, and procuring the cannisters
to complete the SSV sampling work.
• In December 2021, the installation and SSV sampling was completed for the Model Linen
Brownfields site. All activities were in accordance with the approved work plan.
• The results of the crawlspace samples at 109 and 111 W. Lewis Street contained levels
of benzene and TCE at levels above the Indoor Air Screening Levels (IASLs), and well
below the Non -Residential Soil -Gas / SSV Screening Levels.
• The SSV samples (slab -on -grade) at 115 and 117 W. Lewis Street contained levels of
benzene, Chloroform, 2-Propanol, PCE, and TCE at levels above the IASLs but well below
the Non -Residential Soil -Gas / SSV Screening Levels.
• The accessible crawlspace samples at 117-B contained levels of PCE above the IASLs in
this space, below the Non -Residential Soil -Gas / SSV Screening Levels.
• Beneath the slab -on -grade floor in the southern half of 120 W. Lewis St. (Model Linen),
SSV-19 and SSV-21 contained levels of PCE above the Non -Residential SSV Screening
Levels. The remaining samples contained levels of chloroform, TCE, and PCE above the
IASLs and below the Non -Residential Soil -Gas / SSV Screening Levels.
• Below the slab -on -grade floor in the northern half of 120 W. Lewis Street (Model Linen)
SSV-14 and SSV-17 contained levels of PCE above the Non -Residential Soil -Gas / SSV
Screening Levels. The remaining samples contained levels of chloroform, TCE, and PCE
above the IASLs but below the Non -Residential Soil -Gas / SSV Screening Levels.
• All of the tenant spaces in the development have HVAC systems which circulate air in
the buildings.
The presence of drycleaner compounds such as PCE and TCE in the groundwater and SSV/CS
samples is consistent with the past use of the property as a dry cleaning and laundry facility.
AZ Development / Model Linen & West Lewis St. Brownfields Sites / SSVAssessment Report Page 19
Pyramid Environmental & Engineering, PC-2022-021 03-15-2022

Z
Pyramid Environmental & Engineering, PC PYRAMID
9.0 Closing
This report is prepared for and made available solely for the use of AZ Development, LLC and the
NCDEQ Brownfields Program. 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, free product thickness, 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 / Model Linen & West Lewis St. Brownfields Sites / SSVAssessment Report Page 20
Pyramid Environmental & Engineering, PC-2022-021 03-15-2022

Figures

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9111 Monroe Road, Suite 175
Charlotte, North Carolina 28270 Site Name: 109 — 111 West Lewis Street
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109 and 111 West Lewis Street
enviroassessments.com Greensboro, North Carolina
enviroassessments EA Project Number: 14-9927.2

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14`

Tables

TABLE 1
West Lewis - Sub -Slab Vapor Sampling Results (12/15/2021)
Results Compared to 2021 Residential and Non -Residential VISLs
109, 111, 115, 117 & 117B W. Lewis St.
Non -Residential
Analytical
Parameter
Analytical
Method
SOIL -GAS
Sample
Laboratory
Results
SOIL -GAS
Sample
Laboratory
Results
SOIL -GAS
Sample
Laboratory
Results
SOIL -GAS
Sample
Laboratory
Results
SOIL -GAS
Sample
Laboratory
Results
SOIL -GAS
Sample
Laboratory
Results
SOIL -GAS
Sample
Laboratory
Results
SOIL -GAS
Sample
Laboratory
Results
SOIL -GAS
Sample
Laboratory
Results
SOIL -GAS
Sample
Laboratory
Results
SOIL -GAS
Sample
Laboratory
Results
SOIL -GAS Sample
Laboratory Results
SOIL -GAS
Sample
Laboratory
Results
SOIL -GAS
Sample
Laboratory
Results
Non -
Residential
Soil -Gas/ SSV
Screening
Levels
Indoor Air
Screening
Level (IASL)
VISL 2021
CS-1
CS-2
CS-3
CS-4
CS-5
CS-6
SSV-7
SSV-8
SSV-9
SSV-10
SSV-11
SSV-11 Duplicate
CS-12
CS-13
Units :
(ug/m3)
(ug/m3)
(ug/m3)
(ug/m3)
(ug/m3)
(ug/m3)
(ug/m3)
(ug/m3)
(ug/m3)
(ug/m3)
(ug/m3)
(ug/m3)
(ug/m3)
(ug/m3)
VISL2018
(ug/m3)
TO-15 Analytes
METHOD
(ug/m3)
Acetone
TO-15
39
65.4
18.4
60.2
97
32.8
ND
342
771
494
40.5
64
ND
ND
2700000
27000
Benzene
TO-15
1.5
3.0
2.7
1.1
1.1
1.2
ND
2.7
ND
ND
ND
ND
1.5
1.3
160
1.6
2-Butanone(MEK)
TO-15
ND
7
ND
7.3
6.4
ND
ND
8
16.6
8.9
ND
9.7
ND
ND
440000
4400
Carbon Disulfide
TO-15
ND
1.1
ND
ND
ND
ND
ND
ND
ND
3.1
ND
ND
ND
ND
61000
610
Chloroform
TO-15
ND
ND
ND
ND
ND
ND
3.5
ND
ND
1.9
1.7
1.9
ND
ND
53
0.53
Carbon tetrachloride
TO-15
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
200
2
Chlorobenzene
TO-15
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
4400
44
Chloromethane
TO-15
1.1
4.5
1.1
1.7
1.7
1.3
ND
1.2
ND
0.81
ND
ND
1.2
1.0
7900
79
CycloHexane
TO-15
ND
3.1
4.8
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
61000
610
Dichlorodifluoromethane
TO-15
ND
3.0
2.7
3.2
2.9
2.6
2.8
2.8
2.8
2.8
2.6
2.9
3.0
2.8
8800
88
Ethanol
TO-15
1050
192
309
1480
1550
1340
102
4580
24,800
22,700
748
873
33.3
74.8
No VISL
No VISL
Ethylbenzene
TO-15
ND
2.5
ND
ND
ND
ND
ND
1.7
ND
ND
ND
ND
ND
ND
490
4.9
1,1-Dichloroethene
TO-15
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
18000
180
1,2-Dibromoethane
TO-15
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
2
0.02
1,2-Dichloroethane
TO-15
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
47
0.47
1,2-Dichloropropane
TO-15
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
330
3.3
Trans-1,2-Dichloroethene
TO-15
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
2.6
2.8
ND
ND
No VISL
No VISL
Cis 1,2- Dichloroethene
TO-15
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
47.3
52.7
ND
ND
No VISL
No VISL
2-Propanol (Isopropanol)
TO-15
23.4
18.4
5.6
19.9
23
16.1
ND
15.2
870
2,690
23.4
28.9
ND
ND
18000
180
n-Hexane
TO-15
1.7
3.3
1.5
ND
ND
1.2
ND
2
ND
ND
ND
1.7
ND
ND
61000
610
2-Hexanone
TO-15
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
2600
26
Methylene Chloride
TO-15
ND
5.3
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
53000
530
Methyl-Tert-Butyl-Ether (MTBE)
TO-15
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
4700
47
Naphthalene
TO-15
ND
ND
ND
ND
5.8
ND
ND
NO
ND
ND
ND
ND
ND
ND
36
0.36
Styrene
TO-15
ND
1.4
ND
ND
ND
ND
ND
1.7
1.8
ND
ND
ND
ND
ND
84000
840
Tetrachloroethylene ( PCE)
TO-15
ND
2.0
ND
ND
ND
ND
69.1
4.8
130
177
46.5
52.9
381
76
3500
35
1, 1, 1, Trichloroethane
TO-15
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
440000
4400
Trichloroethylene (TCE)
TO-15
ND
3.3
ND
ND
ND
ND
ND
ND
ND
ND
2.3
2.5
ND
ND
180
1.8
Toluene
TO-15
4.1
63.7
5.5
2.8
8.9
3.1
ND
9.3
6.8
6.2
ND
ND
2.0
2.2
440000
4400
Trichlorofluoromethane (Freon)
TO-15
ND
ND
ND
ND
ND
ND
ND
ND
29.7
38.5
2.6
2.5
ND
ND
No VISL
No VISL
1,2,4-Trimethylbenzene
TO-15
ND
ND
ND
ND
ND
ND
ND
1.8
18.4
5.2
ND
ND
ND
ND
5300
53
1,3,5-Trimethylbenzene
TO-15
ND
ND
ND
ND
ND
ND
ND
ND
5.1
ND
ND
ND
ND
ND
5300
53
Vinyl Chloride
TO-15
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
280
2.8
m&p-Xylene
TO-15
ND
8.0
ND
ND
ND
ND
ND
4.6
4.1
ND
ND
ND
ND
ND
8800
88
o-Xylene
TO-15
ND
3.0
ND
ND
ND
ND
ND
2.6
3.1
2.4
ND
ND
ND
ND
8800
88
Total Xylenes
TO-15
ND
11
ND
ND
ND
ND
ND
7.2
7.2
2.4
ND
ND
ND
ND
8800
88
All Other TO-15 Parameters
TO-15
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
NA
NA
ug/m3 = Micrograms per Cubic Meter 381 Concentrations above the Non -Residential VISLs for Crawl -space samples
ND = Not Detected above MDL or RL

TABLE 2
BOXCAR - Sub -Slab Vapor Sampling Results (01/19/2022)
Results Compared to 2021 Residential and Non -Residential VISLs
120 W. Lewis St.
Non -Residential
Analytical
Parameter
Analytical
Method
SOIL -GAS
Sample
Laboratory
Results
SOIL -GAS
Sample
Laboratory
Results
SOIL -GAS
Sample
Laboratory
Results
SOIL -GAS
Sample
Laboratory
Results
SOIL -GAS
Sample
Laboratory
Results
SOIL -GAS
Sample
Laboratory
Results
SOIL -GAS
Sample
Laboratory
Results
SOIL -GAS
Sample
Laboratory
Results
SOIL -GAS
Sample
Laboratory
Results
SOIL -GAS
Sample
Laboratory
Results
SOIL -GAS
Sample
Laboratory
Results
Non -
Residential
Soil -Gas / SSV
Screening
Levels
Indoor Air
Screening
Level (IASL)
VISL 2021
SSV-14
SSV-15
SSV-16
SSV-17
SSV-18
SSV-19
SSV-20
SSV-21
SSV-22
SSV-23
SSV-23 Dup.
Units:
(ug/m3)
(ug/m3)
(ug/ni
(ug/m3)
I (ug/m3)
(ug/m3)
(ug/ni
(ug/m3)
(ug/m3)
I (ug/m3)
(ug/ni
VISL2018
(ug/m3)
(ug/m3)
TO-15Analytes
METHOD
I
Acetone
TO-15
ND
112
29.1
ND
40.4
73.5
< 211
<971
ND
ND
ND
2700000
27000
Benzene
TO-15
NO
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
160
1.6
2-Butanone (MEK)
TO-15
ND
5
ND
ND
5.8
13.5
ND
ND
ND
ND
ND
440000
4400
Carbon Disulfide
TO-15
ND
3
ND
ND
NO
ND
NO
ND
NO
ND
ND
61000
610
Chloroform
TO-15
ND
2.9
ND
ND
ND
3.4
ND
ND
ND
ND
ND
53
0.53
Carbon tetrachloride
TO-15
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
200
2
Chlorobenzene
TO-15
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
4400
44
Chloromethane
TO-15
ND
NO
ND
ND
ND
ND
ND
ND
ND
ND
ND
7900
79
Cyclohexane
TO-15
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
61000
610
Dichlorodifluoromethane
TO-15
2.9
2.7
4
NO
2.8
3.1
ND
ND
ND
ND
ND
8800
88
Ethanol
TO-15
12.9
174
167
NO
175
220
ND
ND
ND
129
155
No VISL
No VISL
Ethylbenzene
TO-15
ND
ND
ND
ND
ND
ND
ND
NO
ND
ND
ND
490
4.9
1,1-Dichloroethene
TO-15
ND
NO
ND
ND
ND
NO
ND
ND
ND
NO
ND
18000
180
Trans-1,2-Dichloroethene
TO-15
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
No VISL
No VISL
Cis 1,2- Dichloroethene
TO-15
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
No VISL
No VISL
2-Propanol (Isopropanol)
TO-15
ND
4.5
10.4
ND
4.8
30.1
ND
ND
ND
ND
ND
18000
180
n-Hexane
TO-15
ND
3
ND
ND
ND
1.8
ND
ND
ND
ND
ND
61000
610
2-Hexanone
TO-15
NO
ND
NO
ND
ND
ND
NO
ND
NO
ND
ND
2600
26
Methylene Chloride
TO-15
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
53000
530
Methyl-Tert-Butyl-Ether (MTBE)
TO-15
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
4700
47
Naphthalene
TO-15
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
36
0.36
Styrene
TO-15
ND
3
ND
ND
ND
ND
ND
ND
ND
ND
ND
84000
840
Tetrachloroethene (PCE)
TO-15
10,100
254
1,160
10,500
105
4,020
1,300
3,750
1,710
471
454
3500
35
1, 1, 1, Trichloroethane
TO-15
ND
NO
ND
ND
ND
NO
ND
ND
ND
NO
ND
440000
4400
Trichloroethene
TO-15
9.5
ND
ND
ND
ND
ND
ND
ND
ND
8.7
9.1
180
1.8
Toluene
TO-15
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
440000
4400
Trichlorofluoromethane
TO-15
ND
4.1
ND
NO
ND
NO
ND
ND
ND
NO
ND
No VISL
No VISL
1,2,4-Trimethyl benzene
TO-15
ND
ND
14.8
NO
ND
8.6
ND
ND
ND
NO
ND
5300
53
1,3,5-Trimethyl benzene
TO-15
ND
ND
2.7
ND
ND
3.1
ND
ND
ND
NO
ND
5300
53
Vinyl Chloride
TO-15
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
280
2.8
m&p-Xylene
TO-15
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
8800
88
o-Xylene
TO-15
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
8800
88
Total Xylenes
TO-15
ND
ND
ND
ND
ND
ND
NO
ND
ND
ND
ND
8800
88
All Other TO-15 Parameters
TO-15
ND
ND
ND
ND
ND
ND
ND
ND
NO
ND
ND
NA
NA
ug/m3 = Micrograms per cubic meter 10,500 7 Concentrations above the Non -Residential VISLs
ND = Not Detected above MDLs

Attachment A

ROY COOPER
Governor
DIONNE DELLI-GATTI
Secretary
MICHAEL SCOTT
Director
Sent Via USPS and Email
Andrew Zimmerman
3412 Old Onslow Road
Greensboro, NC 27407
andyz(cr�,azdev.biz
NORTH CAROLINA
Environmental Quality
March 26, 2021
Subject: Request for Additional Assessment
Model Linen & West Lewis Street Brownfields Projects
109/111, 117-B1, and 120 West Lewis Street
Greensboro, Guilford County
Brownfields Project Numbers 08007-04-041 & 17046-13-041
Dear Mr. Zimmerman:
Thank you for your interest in the North Carolina Brownfields Program (the Program). We
understand that you are a follow-on owner of the Brownfields Property located at 120 West Lewis Street,
Greensboro, which is referred to as the Model Linen Brownfields site, and that you are the Prospective
Developer for the Brownfields Property located south of the Model Linen site at 109/111 and 117-B1
West Lewis Street, Greensboro. As you know, there was a discrepancy identified with regards to the land
use restrictions on the Model Linen site stemming from its original recordation in 2006. On March 25,
2021, I and Bruce Nicholson, our Program Manager, discussed this and other related issues with your
attorney, George House of Brooks Pierce. As a result of that discussion, we have developed the following
course of action to not only resolve the outstanding Model Linen issues, but also to efficiently and cost-
effectively move forward with the remainder of the brownfields process on the West Lewis Street
Brownfields project.
Additional Assessment
The Program is requesting additional assessment data for both the Model Linen and West Lewis
Street properties. This is based on the detection of trichloroethylene (TCE) in the groundwater at the
Model Linen site and the lack of sub -slab vapor data at each of these properties with the exception of only
one sample collected in the southeastern area of the 109/111 West Lewis Street location.
This data request is for representative sub -slab vapor data only from 1) the former Model Linen
building, 2) the 109/111 West Lewis Street building, and 3) the 117-B 1 building to evaluate the risk of
vapor intrusion into each of these buildings. The basis for the request is that the former Model Linen
building may be the source of TCE to groundwater and it is reportedly located upgradient of the 109/111
and 117-B 1 West Lewis Street buildings. Further, drycleaning was reported to have occurred in the 117-
B 1 West Lewis Street building (EnviroAssessments, August 8, 2013), but the available data does not
include sample points from that area in the building. Only one sub -slab vapor sample was collected from
the 109 West Lewis Street building in 2014, and the results indicated that low concentrations of TCE and
other volatile organic compounds (VOCs), including the daughter products of TCE were present in that
sample. This sample was collected in the southeastern area of this building, which is farther away from
the former Model Linen site, the potential source. Additional locations should be sampled therefore to
EQ2�
North Carolina Department of Environmental Quality I Division of Waste Management
217 West Jones Street 1 1646 Mail Service Center I Raleigh, North Carolina 27699-1646
racy Sri cn�ac��rvu�
dePmvnbn m Eavi­wl Ouallh 919.707.8200

Model Linen & West Lewis Street
March 26, 2021
Page 2
identify current conditions under the slab and to evaluate the risk of vapor intrusion into each of these
buildings.
The assessment should be conducted in accordance with a DEQ-approved work plan and the most
current DWM vapor intrusion guidance. Please provide a work plan for my review and approval before
proceeding with the scope of work. We are also providing the attached Preliminary Vapor Intrusion Work
Plan & Report Checklist for your use in preparing this work plan and subsequent report. Please note that
this document is under review and may undergo further modification. Sample locations should target
known or suspected historical sources of TCE or other VOCs at each of these properties, including
drains/utility lines, and if historically present, subgrade structures. The data from this assessment will be
evaluated with the DEQ risk calculator; depending on the results, additional sub -slab or indoor air
assessment may be required. The sub -slab data collected for this assessment along with the data already
submitted to the Program will be used to document site conditions in the brownfields agreement and to
develop appropriate land use restrictions.
Brownfields Agreements
West Lewis Street Brownfields Agreement — We can begin the drafting process on the West Lewis
Street Brownfields Agreement (BFA) with the information we have now, but upon receipt will update the
draft BFA with the assessment data requested above. To be more efficient and cost-effective, we propose
to incorporate the Model Linen property into the West Lewis Street BFA. Upon recordation of this
agreement, the existing land use restrictions in the Model Linen BFA would be superseded and all of
these properties would be under one agreement and on one survey plat. This will save you transactional
costs and make complying with the annual Land Use Restriction Update reporting simpler.
Model Linen Brownfields Agreement — the Model Linen BFA was previously recorded, but it has
been determined that the land use restrictions of the agreement and those on the accompanying
Brownfields survey plat do not match. As discussed above, rather than amend this agreement, we propose
that we supersede the recorded Model Linen BFA with the new West Lewis Street BFA that will be
written to include the former Model Linen site.
Lastly, as you know the Brownfields Project Manager formerly assigned to address the Model
Linen plat discrepancy and to the West Lewis Street project has retired from the State. Going forward, I
will be handling the project management of this project. For at least the next couple of months, I will be
solely teleworking; therefore, the fastest way to reach me is via email at sharon.eckardAncdenr.gov or by
my State mobile number 919.609.2617.
I look forward to receiving the work plan for this scope of work. Please feel free to contact me if
you have any questions.
Sincerely,
Sharon Poissant Eckard, PG
Eastern District Supervisor
Brownfields Program
Division of Waste Management
Enclosure
ec: Central Files, DEQ
Bruce Nicholson, DEQ
George House, Brooks Pierce
D Q
� North Carolina Department of Environmental Quality I Division of Waste Management
217 West Jones Street 1 1646 Mail Service Center I Raleigh, North Carolina 27699-1646
NORM CAROLiNA
DWffhrafft Q„a„ry 919.707.8200

Attachment 6

'10881HSSF1236'
IIfl��I�I��I�IIUIIABIflI�����
DocumentlD NONCD0002088
Site Name MODEL LINEN SERVICE - B
DocumentType Site Assessment Rpt (SAR)
t
Rpt5egment
DocDate 11/4/1996 '��Vll
DocRcvd J�
2/20/2007
4
Bo„ SF1236
AccessLevel PUBLIC
i
D'"is'°" WASTE MANAGEMENT
Section SUPERFUND
Program IHS (IHS)
Doccat FACILITY

m m m m m M.m mm m m m mm mmm mm

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4600 Dundas Drive
Greensboro, NC 27407
Attention: Henry Kwiecinski
Project Number:
6307800
Project Name:
Four Seasons Env. (120 W. Lewis)
Sample Date
Time Sample
RAL EPA*
Results
Number Taken
hrs Location
Sample# Method
(Pl2m)
T-1 9/26196
---- Pit Bottom
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T-2 9/26/96 ----
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Total Petroleum Hydrocarbons as Diesel
parts per million
less than or below detection limits
P 0. Bax 473. 106 Short Street • Kerner'svil(e. North Camriina 27284. 9101996-2841

FO
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Return Completed Form To: State Use Only
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NOFFICE ADDRESS]. Date Received
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1. Ownership of Tank(s) 11. Location1.
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NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory John E, Skvarla, III
Governor Secretary
October 23, 2014
Mr. Andrew Zimmerman
AZ Development, LLC
3412 Old Onslow Road
Greensboro, NC 27407
Subject: REVISED LETTER OF ELIGIBILITY — WEST LEWIS STREET PROJECT
109/111 West Lewis Street
Greensboro, Guilford County
N.C. Brownfields Program Project No. 17046-13-041
Dear Mr. Zimmerman:
The North Carolina Department of Environment and Natural Resources (DENR) received,
on October 10, 2014, and has reviewed an Updated/Amended Brownfields Property Application
(U/ABPA) prepared and submitted by Michael P. McDermott Jr. of EnviroAssessments, PLLC
(EA) on behalf of AZ Development, LLC as the applicant Prospective Developer (PD) seeking
entry into the N.C. Brownfields Program (NCBP) and a brownfields agreement regarding a 0.24-
acre parcels located at 109/111 West Lewis Street, Greensboro, Guilford County (subject property).
On October 25, 2013, AZ Development, LLC was granted eligibility for entry into the
NCBP for its "West Lewis Street" redevelopment project, consisting of a single 0.48-acre parcel
located at 117-B1 West Lewis Street, immediately east of and contiguous to the subject property.
We understand that AZ Development, LLC desires to increase the acreage of its West Lewis Street
project by adding the subject property to the original 0.48-acre parcel already deemed eligible. We
understand further that AZ Development, LLC desires to purchase the subject property for
redevelopment in commercial retail, office and flex space. Upon review of the U/ABPA with
respect to the requirements of the Brownfields Property Reuse Act of 1997, DENR has determined
that this additional acreage is eligible for entry into the NCBP and for continued evaluation for a
Brownfields Agreement (BFA) as part of the West Lewis Street project.
The next step in the process will involve a detailed review of available environmental and
other relevant data to determine what is currently known about contamination at the site. We are in
receipt of a Phase I Environmental Site Assessment (ESA) for the 117-B1 parcel and a Phase I ESA
for the 109/111 parcel, both prepared by EA, dated June 12, 2013 and July 30, 2014, respectively,
and a Phase II ESA for the 109/111 parcel, dated September 8, 2014 and also prepared by EA.
These reports were submitted with the U/ABPA. Any existing historical site information from the
files of DENR's Division of Waste Management will also be utilized during the evaluation process.
Please forward to your brownfields Project Manager any additional environmental reports, data or
site information you may have or can acquire to assist in our evaluation. This should include reports
from other DENR agencies or regional offices, if available.
1646 Mail Service Center, Raleigh, North Carolina 27699-1646
Phone: [phone]Internet: http://portal.ncdenr.org/web/wm
An Equal Opportunity 1 Affirmative Action Employer — Made in part by recycled paper

Mr. Andrew Zimmerman
October 23, 2014
Page 2
We agree that the increased footprint of your West Lewis Street project will bring additional
public benefits to this emerging part of Greensboro. And, as mentioned in the Letter of Eligibility
for the 117-131 parcel, your West Lewis Street project will further advance the redevelopment
potential in an area that already has a brownfields agreement - the Model Linen project on property
located across the street from the West Lewis Street site.
We look forward to working with you to advance this now expanded second brownfields
redevelopment project you have brought to the Program, your first being the Burlington
Distribution site. Tony Duque will continue to be the brownfields Project Manager for the West
Lewis Street project. If you have questions about this correspondence or require additional
information, please feel free to contact Tony by phone at 919-707-8380 or by e-mail at
[e-mail].
Sincerely,
�G
Michael E. Jott
Deputy Director
Division of Waste Management
cc: Project File
ec: Bruce Nicholson, DENR
Tony Duque, DENR

9111 Monroe Road, Suite 175
Charlotte, North Carolina 28270
T 704.846.8853 F 704.846.3271
enviroassessments. com
enviroassessments
109 -111 WEST LEWIS STREET
September 8, 2014
Mr. George House, Attorney -At -Law
Brooks Pierce
2000 Renaissance Plaza
230 N. Elm Street
Greensboro, North Carolina 27401
[phone]
Attention: Mr. George House, Attorney -At -law
Reference: Phase II Environmental Site Assessment
109-111 West Lewis Street
109 and 111 West Lewis Street
Greensboro, Guilford County, North Carolina
EA Project No. 14-9927.2
Dear Mr. House:
EnviroAssessments (EA) has completed a Phase II Environmental Site Assessment (ESA) of the 109-111
West Lewis Street property (the "Site"), located in Greensboro, Guilford County, North Carolina. A Site
Location Map is attached as Figure 1. EA conducted a Phase I Environmental Site Assessment of the Site
and a report was submitted to High Point Bank on July 17, 2014 under separate cover. The purpose of the
Phase II ESA was to evaluate the Site with respect to potential contamination issues associated with the on -
site historic painting operations and auto repair operations and to evaluate the Site for the presence of
chlorinated solvents in groundwater which have been identified at the off -site western adjacent property (117
BI West Lewis Street) and the off -site northern Model Linen-B site.
1.0 SITE HISTORY
The Site consists of one approximately 0.24 acre rectangular -shaped parcel of land identified as Parcel
Identification Number 7864631801 according to the Guilford County Tax Assessor's Office. The Site is
improved with one approximately 9,269 square foot vacant commercial building which was constructed in
1910. The Site building is currently unoccupied and was formerly occupied by various tenants including
Farmers Horse and Mule Company, Carolina Service Corporation Auto Repairs, and Kindley's Warehouse
Storage. The office/warehouse facility was most recently occupied by Kindley's Office Supply, 109 West
Lewis Street and Rhyne Warehouse, 111 West Lewis Street.
To summarize the Site history, the Site has been improved with the present building since around 1910.
Sanborn maps and/or city directories indicate the Site has been improved since at least 1885. The Site
formerly existed as a wagon/carriage company from at least 1885 through 1913; as an auto garage and/or auto

Phase II Environmental Site Assessment
109-111 West Lewis Street
109 and I I I West Lewis Street
Greensboro, Guilford County, North Carolina
EA Project No. 14-9927.2
September 8, 2014
2
repair shop and Pepsi Cola Bottling Company in 1919 through at least 1925; as a furniture warehouse from at
least 1950 through 1971; also as an auto repair shop from 1962 through 1965; and as a warehouse and/or
office supply company from 1969 through 1989. The building is presently vacant.
The ESA revealed no evidence of recognized environmental conditions in connection with the Site,
except for the following:
• The Site contained operations involving painting from at least 1885 through at least 1919 and auto
repair shops in 1919 and from at least 1962 through 1965. Historically, auto repair shops have been
known to utilize quantities of petroleum products and solvents, and painting operations have used
petroleum -based paints and solvents. These activities typically generate wastes associated with the
same substances, the disposal and management of which have not been closely regulated in the past.
Based on the length of time the Site historically operated with one or more of these uses
(intermittently from at least 1885 through the 1960s), a potential exists that undocumented releases of
petroleum products and/or solvents have caused an impact to the Site's soil and/or groundwater
quality.
• West Lewis Street Property, located adjacent to the west and topographically cross -gradient of the
Site at 117 West Lewis Street, is listed as a Brownfields Management System/Brownfield Sites,
Pending Eligibility property. EA completed a prior Phase I Environmental Site Assessment; West
Lewis Street Property prepared by EnviroAssessments and dated June 12, 2013 on this property.
According to the report, historical resources indicated the property operated as Greensboro Laundry
& Cleaners with suspected on -site "dry cleaning" operations from as early as 1950 through 1971.
Additionally, the report identified potential off -site sources of chlorinated solvent contaminants in the
area. EA completed a subsequent Phase II assessment of the adjacent property, dated August 8, 2013
which identified Tetrachloroethene (PCE) in soil and groundwater at this property, within 30 feet of
the Site's western property boundary. The lateral extent of the contamination has not been defined,
including in the direction of the 109-111 West Lewis Street subject Site, and the source(s) of the
contamination have not been definitively identified. Therefore, a significant potential exists that
similar contamination may also be present in groundwater at the 109-111 West Lewis Street Site.
• The property formerly known as Model Linen-B at 120 West Lewis Street, along the north side of
West Lewis Street, approximately 40 feet north of the Site property, is listed on the state's (North
Carolina Department of Environment and Natural Resources or NCDENR) Incident Management
Database (IMD) and Leaking Underground Storage Tanks (LUST) database with two open incident
case numbers: Inc. No. 16349 and Inc. No. 86606. The site has contaminants identified in the
groundwater which exceed the NCDENR NCAC 2L Ground Water Quality Standards (NCAC 2L
Standards). Some of the contaminants which exceed the NCAC 2L Standards include Benzene,
Vinyl Chloride, Trichloroethene, and Tetrachloroethene. A Brownfields plat indicates MW-3 is one
of the monitoring wells with concentrations of Benzene and Tetrachloroethene which exceed the
NCAC 2L Standards. MW-3 is located approximately 40 feet north of the 109-111 West Lewis
Street Site property. Available information does not specify groundwater flow direction and does not
indicate if the contamination has migrated off -site to the south toward the Site. Considering the
proximity of the contamination at the Model Linen site to the Site property (within 40 feet) and the

Phase II Environmental Site Assessment
109-111 West Lewis Street
109 and I I I West Lewis Street
Greensboro, Guilford County, North Carolina
EA Project No. 14-9927.2
September 8, 2014
absence of data detailing contaminant distribution patterns or groundwater flow direction, the Model
Linen site is a potential off -site source of contaminants to the 109-111 West Lewis Street subject Site.
We note that the recently revised ASTM E-1527-13 Phase I ESA guidance process requires that
Phase I ESAs now consider the potential for vapor encroachment onto a Site property from
contamination associated with on -site and nearby off -site sources. The possible presence of volatile
hydrocarbons from the on -site and off -site concerns noted above are potential sources of vapor
encroachment for the Site property and may pose a potential for vapor intrusion into the Site building
which could be considered to be a potential health concern in some situations.
In addition, the following BERs (Business Environmental Risks) were identified:
EA personnel noted evidence of water/moisture intrusions and substantial water damaged ceiling
finishes on the wood framing and roof supports throughout the Site building. The moisture issues
appear to be the result of roof leaks and/or faulty water piping. A potential exists that substantial
water/moisture intrusion has proliferated, damaging the building's interior finishes and potentially its
structural materials. No areas of suspect mold growth were observed during EAs physical inspection
of the Site building. EA personnel did not observe any areas which were not readily accessible such
as attics, crawl spaces, and ventilation systems. Significant damage of the building and the presence
of mold are conditions which normally detract from the value and "marketability" of a property. In
order to confirm the presence of absence of mold or excessive moisture conditions, particularly in
areas that are not readily accessible or visible (i.e.; attics, ventilation systems, etc.), a formal mold
and moisture inspection would be necessary.
• Considering the age of the Site building (constructed in 1910) a potential exists that asbestos -
containing materials (ACMs) could be present in some of the building's construction materials. EA
personnel observed no obvious evidence of damaged suspect ACMs. However, in order to confirm
the presence or absence of ACMs in any structure, a formal ACM survey would be required.
• Based on the age of the Site building (constructed in 1910) a potential exists that lead based paint
(LBP) could be present on some of the building's painted surfaces. EA personnel observed no
significant amounts of damaged paint at the Site. However, in order to confirm the presence or
absence of lead -based paint in any structure, a formal lead -based paint survey would be required.
The Client (Brooks Pierce) authorized EA to complete a Phase II ESA to evaluate the Site in order to
determine potential on -site impacts from the concerns noted above, the details of which are provided in the
following sections of this report.

Phase II Environmental Site Assessment 4
109-111 West Lewis Street
109 and I I I West Lewis Street
Greensboro, Guilford County, North Carolina
EA Project No. 14-9927.2
September 8, 2014
2.0 FIELD ACTIVITIES
2.1 Subsurface Utility Locating
EA personnel contacted the North Carolina One Call Center and requested that the local utility services
conduct an Electromagnetic (EM) Survey in the area of concern at the Site to determine the orientation and
location of underground utility lines for optimal sampling locations. At the time of the assessment,
underground utility lines appeared to be marked up to the Site boundaries. However, public utilities are not
authorized to locate underground lines on private property.
On August 22, 2014, EA and its subcontractor, Sweetwater Utility Exploration (Sweetwater), conducted an
on -site ground -penetrating radar (GPR) survey and EM survey at the Site to determine the orientation and
location of on -site subsurface utilities (including building interior) in order to determine optimal sampling
locations. All items located were marked directly on the surface using paint.
2.2 Soil Assessment
On August 22, 2014, EA and its subcontractor utilized a Geoprobe® sampling device to advance soil sample
points in six (6) locations (S-1 through S-6) of the Site, as depicted on the attached Figure 2. A total of six
(6) on -site soil samples (5-1-2, 5-2-2, 5-3-2, 5-4-2, 5-5-2 and S-6-2) were collected from the six (6) soil
boring locations. EA personnel screened the soil columns for Volatile Organic Compounds (VOCs) from
each boring at two -foot intervals using a Photo Ionization Detector (PID), and visual and olfactory indicators.
Phase II Site Photos are included as Appendix 1. Boring logs are included in Appendix 2 which detail soil
descriptions, sampling depths and field screening results.
Soil boring S-1 was advanced to a depth of 18 feet below grade (BG) near the western interior wall of the 109
West Lewis Street building. Soils encountered in the boring consisted of concrete at depths of 0-2 inches
underlain by tan/red stiff clay and dark browniblack silt at depths of 2 inches to 4 feet BG, tan/red clayey silt
at depths of 4-16 feet BG and brown/gray micaceous clayey silt at depths of 16-18 feet BG. Soils were
observed to be moist at depths of 8-16 feet BG and saturated at depths of 16-18 feet BG. Petroleum odors
were noted in the soil at depths of 8-18 feet BG. Field screening of the soils did not indicate detectable VOC
concentrations in the soils at depths of 2-6 feet BG; however, detectable VOC concentrations ranged from 0.5
parts per million (ppm) at a depth of 8 feet BG to 162 ppm at a depth of 18 feet BG. One (1) soil sample (S-
1-2) was collected at a depth of two (2) feet BG from soil boring S-1.
Soil boring S-2 was advanced to a depth of 20 feet below grade (BG) near the western interior wall of the 109
West Lewis Street building and to the north of soil boring S-1. Soils encountered in the boring consisted of
concrete at depths of 0-2 inches underlain by tan/red clayey silt at depths of 2 inches to 12 feet BG and
brown/gray micaceous clayey silt at depths of 12-20 feet BG. Soils were observed to be moist at depths of 12-
14 feet BG and saturated at depths of 14-20 feet BG. Petroleum odors were noted in the soil at depths of 12-
20 feet BG. Field screening of the soils did not indicate detectable VOC concentrations in the soils at depths
of 2-6 feet BG. One (1) soil sample (5-2-2) was collected at a depth of two (2) feet BG from soil boring S-2.

Phase II Environmental Site Assessment
109-111 West Lewis Street
109 and I I I West Lewis Street
Greensboro, Guilford County, North Carolina
EA Project No. 14-9927.2
September 8, 2014
5
Soil boring S-3 was advanced to probe refusal, which was encountered at a depth of 18 feet below grade
(BG), near the northwestern exterior portion of the 109 West Lewis Street building. Soils encountered in the
boring consisted of concrete at depths of 0-2 inches underlain by tan stiff clay at depths of 2 inches to 4 feet
BG, tan/red clayey silt at depths of 4-12 feet BG, tan/gray clayey silt at depths of 12-16 feet BG and tan sandy
silt at depths of 16-18 feet BG. Soils were observed to be moist at depths of 16-18 feet BG. Petroleum odors
were noted in the soil at depths of 12-18 feet BG. Field screening did not indicate detectable VOC
concentrations at depths of 2-6 feet BG. One (1) soil sample (5-3-2) was collected at a depth of two (2) feet
BG from soil boring S-3.
Soil boring S-4 was advanced to a depth of 8 feet below grade (BG) near the southern exterior of the 109
West Lewis Street building. Soils encountered in the boring consisted of tan stiff clay at depths of 0-4 feet
BG underlain by tan clayey silt at depths of 4-8 feet BG. The soils were observed to be dry and no solvent or
petroleum odors were noted in soil boring S-4. Field screening did not indicate detectable VOC
concentrations in the soils at depths of 2-8 feet BG. One (1) soil sample (S-4-2) was collected at a depth of
two (2) feet BG from soil boring S-4.
Soil boring S-5 was advanced to a depth of 8 feet below grade (BG) near the southern exterior of the 111
West Lewis Street building and to the west of soil boring S-4. Soils encountered in the boring consisted of
dark brown stiff clay at depths of 0-2 feet BG underlain by tan/red clayey silt at depths of 2-8 feet BG. The
soils were observed to be dry and no solvent or petroleum odors were noted in soil boring S-5. Field
screening did not indicate detectable VOC concentrations in the soils at depths of 2-8 feet BG. One (1) soil
sample (5-5-2) was collected at a depth of two (2) feet BG from soil boring S-5.
Soil boring S-6 was advanced to a depth of 20 feet below grade (BG), near the southwestern exterior portion
of the I I I West Lewis Street building and to the west of soil boring S-5. Soils encountered in the boring
consisted of dark brown clayey silt at depths of 0-2 feet BG underlain by brown clayey silt at depths of 2-12
feet BG and gray/tan silty sand at depths of 12-20 feet BG. Soils were observed to be moist at depths of 8-16
feet BG and saturated at depths of 16-20 feet BG. Solvent odors were noted in the soils at depths of 12-20
feet BG. Field screening did not indicate detectable VOC concentrations at depths of 2-6 feet BG. One (1)
soil sample (5-6-2) was collected at a depth of two (2) feet BG from soil boring S-6.
The soil samples were placed into appropriate sample containers and labeled with the Site name, time and
date of collection, and analysis to be performed. The filled sample containers were placed in a cooler
containing ice and transported to Pace Analytical Services, Inc. in Huntersville, North Carolina (a North
Carolina -certified laboratory). A chain -of -custody form was maintained with the samples. All soil samples were
submitted and analyzed for volatile organic compounds (VOCs) by EPA Method 8260 and semi -volatile
Polynuclear Aromatic Hydrocarbons (PAHs) by EPA Method 8270. A copy of the laboratory analytical
report is attached as Appendix 3. The laboratory results are discussed in Section 3.0 of this report.

Phase II Environmental Site Assessment 6
109-111 West Lewis Street
109 and I I I West Lewis Street
Greensboro, Guilford County, North Carolina
EA Project No. 14-9927.2
September 8, 2014
2.3 Groundwater Assessment
On August 22, 2013, EA and its subcontractor utilized the Geoprobe sampling device to install a total of four
(4) temporary groundwater piezometer wells at the Site (TMW-1 through TMW-4) in the locations of the Site
depicted on the attached Figure 2. All groundwater piezometer wells were constructed of 1-inch diameter
PVC screen and casing and completed approximately 1-2 feet above grade. Detailed well construction
information is included in Table 4.
Piezometer well TMW-1 was installed to the termination depth (18 feet BG) in soil boring S-1 and the well
was constructed with 10 feet of screen (8-18 feet BG). Piezometer well TMW-2 was installed to the
termination depth of soil boring S-2 (20 feet BG) and the well was constructed with 10 feet of screen (10-20
feet BG). Piezometer well TMW-3 was installed to the termination depth of soil boring S-3 (18 feet BG) and
the well was constructed with 10 feet of screen (8-18 feet BG). Piezometer well TMW-4 was installed to the
termination depth of soil boring S-6 (20 feet BG) and the well was constructed with 10 feet of screen (10-20
feet BG). Upon installation, the piezometer wells were developed/purged and allowed to equilibrate for
approximately 1-6 hours prior to collecting groundwater samples. Temporary piezometer well boring/well
construction logs are included in Appendix 2.
On August 22, 2013, EA personnel collected groundwater samples (TMW-1 through TMW-4) from each of
the four (4) piezometer wells using clean, dedicated polypropylene tubing and a peristaltic pump. In addition,
EA personnel collected one (1) groundwater sample from an existing off -site groundwater monitoring well
(MW-3) located to the northwest of the Site at 120 West Lewis Street (currently Lotus Lounge). Prior to
collecting the groundwater sample from MW-3, EA personnel purged the monitoring well of approximately 3
well volumes of water.
The groundwater samples were placed into appropriate sample containers and labeled with the Site name,
time and date of collection, and analysis to be performed. The filled sample containers were placed in a
cooler containing ice and transported to PACE Analytical in Huntersville, North Carolina (a North Carolina -
certified laboratory). A chain -of -custody form was maintained with the sample. The groundwater samples were
submitted and analyzed for VOCs by EPA Method 8260 and PAHs by EPA Method 8270. A copy of the
laboratory analytical report is attached as Appendix 3. The laboratory results are discussed in Section 3.0 of
this report.
On August 25, 2014, EA personnel returned to the Site to gauge groundwater levels in the temporary
piezometer wells and off -site existing groundwater monitoring well MW-3. EA gauged the depth to the
groundwater table (from the top of well casings) for each of the on -site groundwater piezometer wells. Using
a SpectraVision Laser Level, EA personnel surveyed the elevations of the tops of each well casing. Using an
assumed benchmark elevation, EA calculated relative well casing elevations. Using the water table depths,
EA then calculated the relative water table elevations at each well point. The well casing and water table data
are provided on Table 4. All of the piezometer wells appear to be hydraulically connected as part of the same
surficial water table aquifer. The relative water table elevations and groundwater -flow direction are presented
on Figure 3. Based on the groundwater elevation measurements taken at the Site, the shallow groundwater
flow direction is interpreted to be generally to the southeast across the site.

Phase II Environmental Site Assessment 7
109-111 West Lewis Street
109 and I I I West Lewis Street
Greensboro, Guilford County, North Carolina
EA Project No. 14-9927.2
September 8, 2014
2.4 Sub -Slab Assessment
On August 22, 2014, EA and its subcontractor utilized a Geoprobe® sampling device to install one (1)
temporary sub -slab vapor probe (VP-1) in the location depicted on the attached Figure 2. The boring was
advanced to a depth of 4 feet BG to the north of a floor drain located near the center of the 109 West Lewis
Street building. A temporary sub -slab vapor probe constructed of a stainless steel mesh sampling point
connected to'/4 inch diameter Teflon tubing was inserted into the boring to a depth of 3 feet BG. Sand was
placed around the sampling point at depths of 2.5-4 feet BG and bentonite was utilized to seal the boring to
the floor surface. Once a proper seal had been established, at least five (5) volumes of air were purged from
the tubing and sand pack interval prior to sample collection.
One (1) sub -slab vapor sample (VP-1) was collected by attaching the tubing to a dedicated one -liter Summa
vacuum canister and a pre -calibrated ten-minute flow controller with vacuum gauge. The Summa canister
was then opened and a sub -slab vapor sample was collected at an approximate flow rate of 70 milliliters per
minute for approximately 14 minutes, until the vacuum remaining in the canister measured approximately 3
inches inches of Mercury (Hg).
The Summa canister was labeled with the Site name, time and date of collection, canister ID, flow control
number and analysis to be performed. The filled canister was transported to Pace Analytical in Huntersville,
North Carolina (a North Carolina -certified laboratory). A chain -of -custody form was maintained with the
sample. The sub -slab vapor sample was submitted and analyzed for VOCs by EPA Method TO-15. A copy of
the laboratory analytical report is attached as Appendix 3. A Field Data Sheet containing detailed sub -slab
vapor sampling information is attached as Appendix 4. The laboratory results are discussed in Section 5.0 of
this report.
3.0 LABORATORY ANALYTICAL RESULTS
3.1 Soil Assessment
EA collected a total of six (6) soil samples (S-1-2, S-2-2, S-3-2, S-4-2, S-5-2 and S-6-2) in the locations
shown on Figure 2. A copy of the laboratory analytical report is attached as Appendix 3 and a summary of
the soil sampling results is presented in Table 1. In Summary, laboratory analysis did not reveal
concentrations of target analytes exceeding North Carolina Department of Environment and Natural
Resources (NCDENR), Inactive Hazardous Sites Branch (IHSB) Industrial Health -Based Preliminary Soil
Remediation Goals (PSRGs) or Protection of Groundwater PSRGs.
Laboratory analysis of soil sample S-1-2 revealed an Acetone concentration of 0.230 milligrams per kilogram
(mg/kg), which does not exceed the Protection of Groundwater PSRG of 24 mg/kg of the Industrial Health -
Based PSRG of 100,000 mg/kg for Acetone. No target analytes were detected above laboratory reporting
limits in the remaining soil samples (S-2-2, S-3-2, S-4-2, S-5-2 and S-6-2).
Refer to Sections 4.0 and 5.0 for EA's conclusions and recommendations.

Phase II Environmental Site Assessment 8
109-111 West Lewis Street
109 and I I I West Lewis Street
Greensboro, Guilford County, North Carolina
EA Project No. 14-9927.2
September 8, 2014
3.2 Groundwater Assessment
EA collected a total of five (5) groundwater samples (TMW-1, TMW-2, TMW-3, TMW-4 and MW-3) at the
locations shown on Figure 2. A copy of the laboratory analytical report is attached as Appendix 3 and a
summary of the groundwater sampling results is presented in Table 2. In Summary, four (4) of the five (5)
groundwater samples (TMW-1, TMW-2, TMW-4 and MW-3) revealed concentrations of the target analytes
exceeding NCAC 2L Groundwater Quality Standards (2L Standards). None of the groundwater samples
revealed concentrations of target analytes exceeding Gross Contamination Levels (GCLs).
Laboratory analysis of on -site groundwater sample TMW-1 revealed a Benzene concentration of 59.8
micrograms per liter (ug/L), which exceeds the 2L Standard of 1 ug/L for Benzene. Groundwater sample
TMW-1 revealed concentrations of Naphthalene (316 ug/L), and 2-Methylnaphthalene (33.0 ug/L) which
exceed the 2L Standards of 6 ug/L for Naphthalene and 30 ug/L for 2-Methylnaphthalene. In addition,
groundwater sample TMW-1 revealed a 1-Methylnaphthalene concentration of 14.9 ug/L which exceeds the
Interim Maximum Allowable Concentration (IMAC) of 1 ug/L for 1-Methylnaphthalene (effective April 1,
2011). No other target analytes were detected in groundwater sample TMW-1 at concentrations exceeding 2L
Standards or IMACs. However, several additional target analytes were detected in groundwater sample
TMW-1 at concentrations below their respective 2L Standards.
Laboratory analysis of on -site groundwater sample TMW-2 revealed a Naphthalene concentration of 99.9
ug/L, which exceeds the 2L Standard of 6 ug/L for Naphthalene. No other target analytes were detected in
groundwater sample TMW-2 at concentrations exceeding 2L Standards or IMACs. However, several
additional target analytes were detected in groundwater sample TMW-2 at concentrations below their
respective 2L Standards.
Laboratory analysis of on -site groundwater sample TMW-3 did not reveal any target analyte concentrations
exceeding 2L Standards. Groundwater sample TMW-3 revealed a Naphthalene concentration of 4.0 ug/L,
which is below the 2L Standard of 6 ug/L for Naphthalene. No other target analytes were detected in
groundwater sample TMW-3 at concentrations exceeding laboratory reporting limits.
Laboratory analysis of on -site groundwater sample TMW-4 revealed concentrations of Naphthalene (420
ug/L), Ethylbenzene (668 ug/L), Total Xylenes (1,030 ug/L) and 2-Methylnaphthalene (33.7 ug/L), which
exceed the 2L Standards of 6 ug/L for Naphthalene, 600 ug/L for Ethylbenzene, 500 ug/L for Total Xylenes
and 30 ug/L for 2-Methylnaphthalene. Groundwater sample TMW-4 also revealed a 1-Methylnaphthalene
concentration of 16.7 ug/L, which exceeds the IMAC of 1 ug/L for 1-Methylnaphthalene. No other target
analytes were detected in groundwater sample TMW-4 at concentrations exceeding 2L Standards or IMACs.
However, several additional target analytes were detected in groundwater sample TMW-4 at concentrations
below their respective 2L Standards.
Laboratory analysis of off -site groundwater sample MW-3 revealed concentrations of Benzene (4.7 ug/L),
Naphthalene (53.9 ug/L) and Tetrachloroethene (PCE; 13.1 ug/L), which exceed the 2L Standards of 1 ug/L
for Benzene, 6 ug/L for Naphthalene and 0.7 ug/L for PCE. Groundwater sample MW-3 also revealed a 1-
Methylnaphthalene concentration of 13.7 ug/L, which exceeds the IMAC of 1 ug/L for 1-Methylnaphthalene.
No other target analytes were detected in groundwater sample MW-3 at concentrations exceeding 2L

Phase II Environmental Site Assessment
109-111 West Lewis Street
109 and I I I West Lewis Street
Greensboro, Guilford County, North Carolina
EA Project No. 14-9927.2
September 8, 2014
0
Standards or IMACs. However, several additional target analytes were detected in groundwater sample MW-
3 at concentrations below their respective 2L Standards.
Refer to Sections 4.0 and 5.0 for EA's conclusions and recommendations.
3.3 Sub -Slab Assessment
EA collected a total of one (1) sub -slab vapor sample (VP-1) for laboratory analysis, the location of which is
depicted on Figure 2. The sub -slab vapor sampling analytical results are presented in Table 3 and Figure 2.
A copy of the laboratory analytical report is attached as Appendix 3. A Field Data Sheet containing detailed
sub -slab vapor sampling information is attached as Appendix 4. In summary, laboratory analysis of sub -slab
vapor sample VP-1 did not reveal concentrations of target analytes exceeding NCDENR, Division of Waste
Management (DWM), Non -Residential Sub Slab and Exterior Soil Gas Screening Levels (SGSLs), recently
updated for June 2014 and used by the IHSB.
Laboratory analysis of sub -slab vapor sample VP-1 revealed detectable concentrations of several target
analytes; however, none of the detected concentrations exceed DWM Non -Residential SGSLs.
Refer to Sections 4.0 and 5.0 for EA's conclusions and recommendations.
4.0 CONCLUSIONS
4.1 Soil Assessment
EA collected a total of six (6) soil samples (5-1-2, S-2-2, 5-3-2, 5-4-2, S-5-2 and S-6-2) in the locations
shown on Figure 2. In summary, none of the soil samples revealed concentrations of target analytes
exceeding IHSB Industrial Health -Based PSRGs or Protection of Groundwater PSRGs.
Based on the laboratory analytical results, no significant petroleum or solvent contamination was identified in
shallow on -site soils in the areas of the site investigated during this Phase II ESA.
However, three (3) of the four (4) on -site groundwater samples (TMW-1, TMW-2 and TMW-4) revealed
concentrations of petroleum constituents exceeding 2L Standards. The source area of the identified on -site
petroleum -contaminated groundwater plume is currently unknown; however, considering the Site's former
automotive repair activities, a potential exists that an on -site source area is associated with the identified on -
site petroleum -contaminated groundwater.
4.2 Groundwater Assessment
EA collected a total of five (5) groundwater samples (TMW-1 through TMW-4 and MW-3) in the locations
shown on Figure 2. In summary, four (4) of the five (5) groundwater samples (TMW-1, TMW-2, TMW-4
and MW-3) revealed concentrations of target analytes exceeding 2L Standards.

Phase II Environmental Site Assessment
109-111 West Lewis Street
109 and I I I West Lewis Street
Greensboro, Guilford County, North Carolina
EA Project No. 14-9927.2
September 8, 2014
10
Groundwater samples TMW-1, TMW-2 and TMW-4 revealed concentrations of petroleum constituents
exceeding 2L Standards in on -site groundwater. Groundwater sample TMW-4, collected near the
southwestern exterior corner of the Ill West Lewis Street building, generally revealed the highest
concentrations of petroleum constituents in on -site groundwater during this Phase II ESA. None of the six (6)
soil samples collected during this Phase II ESA revealed detectable concentrations of petroleum constituents
in on -site shallow soil and the source area for the identified petroleum -contaminated groundwater is currently
unknown. However, considering the Site's former painting and automotive repair activities, a potential exists
that an on -site source area is associated with the petroleum -contaminated groundwater.
Groundwater sample MW-3, collected from an existing groundwater monitoring well located off -site and
approximately 40 feet to the northeast of the Site at 120 West Lewis Street (currently Lotus Lounge), revealed
concentrations of petroleum and solvent constituents exceeding 2L Standards. The elevated petroleum and
solvent constituent concentrations detected in MW-3 appear to be associated with previously identified and
documented release incident numbers 16349 and 86606 at the Model Linen-B site formerly located at 120
West Lewis Street. Based on the groundwater elevation measurements taken at the Site and from off -site
groundwater monitoring well MW-3, the shallow groundwater flow direction is interpreted to be generally to
the southeast and towards the Site. Therefore, the potential exists that the petroleum contamination identified
in on -site groundwater may be associated with the previously documented release incidents associated with
the Model -Linen B site. However, based on the lack of solvent constituents detected in the on -site
groundwater samples (TMW-1, TMW-2, TMW-3 and TMW-4) and considering the highest concentrations of
petroleum constituents were detected in the groundwater sample (TMW-4) located the farthest distance from
MW-3, it does not appear likely that the on -site petroleum -contaminated groundwater has been significantly
impacted as a result of the release incidents associated with the Model Linen-B site.
Two of the groundwater samples (TMW-1 and TMW-4) revealed concentrations of petroleum constituents
exceeding NCDENR, DWM Non -Residential Vapor Intrusion Groundwater Screening Levels (GWSLs).
Groundwater samples TWM-1 and TMW-4 revealed concentrations of Ethylbenzene and Naphthalene which
exceed the DWM Vapor Intrusion GWSLs of 152 ug/L for Ethylbenzene and 146 ug/L for Naphthalene. In
addition, groundwater sample TWM-4 revealed a Total Xylenes concentration of 1,030 ug/L, which exceeds
the DWM GWSL of 414 ug/L for Total Xylenes. DWM GWSLs are detailed in the Groundwater Sampling
Analytical Table (Table 2). Refer to section 4.3 for additional information regarding on -site structural
vapor intrusion potential at the Site.
4.3 Sub -Slab Vapor Intrusion Assessment
EA collected a total of one (1) sub -slab vapor sample (VP-1) for laboratory analysis, the location of which is
depicted on Figure 2. The sub -slab vapor sampling analytical results are presented in Table 3 and Figure 2.
A copy of the laboratory analytical report is attached as Appendix 3. In Summary, laboratory analysis of
sub -slab vapor sample VP-1 did not reveal concentrations of target analytes exceeding NCDENR, DWM,
Non -Residential Sub Slab and Exterior Soil Gas and Screening Levels (SGSLs), recently updated for June
2014.
Laboratory analysis of soil -slab vapor sample VP-1 revealed detectable concentrations of several target
analytes; however, none of the detected concentrations exceed DWM Non -Residential SGSLs.

Phase II Environmental Site Assessment
109-111 West Lewis Street
109 and I I I West Lewis Street
Greensboro, Guilford County, North Carolina
EA Project No. 14-9927.2
September 8, 2014
11
Based on the laboratory analytical results of sub -slab vapor sample VP-1, no evidence of significant adverse
impact associated with potential vapor encroachment/migration from the off -site northwestern Model Linen-B
release incidents and/or from the western adjacent 117 B West Main Street property was identified at the Site
during this Phase II ESA. However, two (2) of the groundwater samples (TMW-1 and TMW-4) collected at
the Site revealed concentrations of target analytes exceeding NCDENR, DWM Non -Residential Vapor
Intrusion Groundwater Screening Levels (GWSL). Based on the presence of on -site groundwater exceeding
DWM GWSLs and the limited sub -slab vapor sampling conducted during this Phase II ESA, the potential
exists for structural vapor intrusion potential to have adversely impacted portions of the Site not investigated
during this Phase II ESA. Sub -slab sampling results can vary significantly according to seasonal and
temporal weather conditions (rain, snow, barometric pressure changes) along with changes to potential
migration pathways such as utilities and surficial cover (impervious surfaces such as pavement, buildings,
clay fill).
�XI 71[4117u 101111eI 7r Y [Qe1f1
We recommend that this report be forwarded to the Guilford County Department of Public Health (GCDPH)
for guidance on whether additional site assessment will be required under State guidelines. The GCDPH will
consider the findings with regard to potential on -site and off -site sources and potentially responsible parties.
The GCDPH could require additional soil and groundwater assessment at the Site to further evaluate the
following:
1. the lateral and vertical extents of potential on -site source areas of petroleum contamination identified
in on -site groundwater;
2. more definitive evaluation of potential off -site sources of contamination;
3. potential "worst case" conditions for sub -slab vapors as a function of colder temperatures and
various temporal weather conditions.
We also recommend that the Client consider determination of eligibility into the Brownfield Program by
preparing Brownfields Property Application for the Site and/or inclusion with the adjacent property to the
west (117 B1 West Lewis Street).

Phase II Environmental Site Assessment 12
109-111 West Lewis Street
109 and I I I West Lewis Street
Greensboro, Guilford County, North Carolina
EA Project No. 14-9927.2
September 8, 2014
6.0 CLOSURE
EA appreciates the opportunity to be of service to you on this Site. Please call the undersigned at (704) 846-
8853 if you desire additional information.
Sincerely,
EnviroAssessments, PLLC
Michael P. McDermott Jr.
Project Manager
Attachments
Gary K. Sawyer, PG, RSM
Principal
Cliff R. Lundgren, P.G.
Senior Project Manager

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Source: USGS 7.5 Minute Topographic Map Greensboro,
North Carolina Quadrangle 1951 (photorevised 1994)
Scale: 1:24,000
9111 Monroe Road, Suite 175
Charlotte, North Carolina 28270
T 704.846.8853 F 704.846.3271
Y
Site Name:
109 - 111
West Lewis Street
109 and 111 West Lewis Street
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enviroassessments.com
Greensboro, North Carolina
enviroassessments
EA Project Number: 14-9927.2

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Benzene: 4.7
_.* Ethylbenzene: 65.8
Naphthalene: 53.9
PCE: 13.1
J TCE: 1.2
(NS) MEK:17.5
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Benzene:59.8
I Toluene: 4.4
Ethylbenzene:
w•I otal Xylenes: 325
Naphthalene:316� `
Styrene: 9.8 D
-JJfEK: 29.2 •
f MIBK:31.3.. _
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Eth Ibenzene:668
Total Xylenes: 1,030
Na hthalene:420 A
2-Chlorotoluene: 58.3
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S-3-2 (ND) `
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Naphthalene: 4.0
S-2-2 (ND)
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Acetone: 46.8
Ethylbenzene: 77.5
Total Xylenes: 49.8
Naphthalene: 99.9
�MEK: 30.0
MIBK: 13.2
p-Isoptopyltoluene: 23.4
* `VP-1
No Target Analyte
■ Concentrations exceeded
the DMW Non -Residential
Sub Slab and Exterior Soil
Gas Vapor Intrusion
Screening Level.
7.
LEGEND FD — Floor Drain
Soil Concentrations Are Reported in Milligrams Per Kilogram (mg/kg).
O Soil Sample Location Groundwater Concentrations Are Reported in Micrograms Per Liter (ug/L).
Soil Sample and Temporary Monitoring Sub -Slab Vapor Concentrations Are Reported in Micrograms Per Cubic Meter (ug/m3)
® Well/Groundwater Sample Location BOLD Concentrations Exceed Soil PSRGs, NCAC 2L Groundwater Standards,
or DWM Non -Residential Vapor Intrusion Screening Levels.
Sub -Slab Vapor Sample Location PSRG - Preliminary Soil Remediation Goal NS — Nest Samnleri
•Off -site Groundwater Monitoring =-Exceeds DWM Non -Residential Vapor Intrusion Groundwater Screening Level (GWSL)
Well MEK = 2-Butanone PCE = Tetrachloroethene
MIBK = 4-Meth I-2-Pentanone TCE = Trichloroethene
FIGURE 2 — SITE PLAN 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

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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

TABLES

TABLE 1
SOIL SAMPLING ANALYTICAL RESULTS
109-111 WEST LEWIS STREET
109 AND III WEST LEWIS STREET
GREENSBORO, GUILFORD COUNTY, NORTH CAROLINA
ENVIROASSESSMENTS PROJECT NO. 14-9927.2
Sample ID
Analytical
Method
S-1-2
S-2-2
S-3-2
S-4-2
S-5-8
S-6-2
Preliminary
Industrial Health-
Based PSRG
Protection of
Groundwater
PSRG
Sample Depth (ft, bgs)
2
2
2
2
2
2
Collection Date
Ed
8/22/2014
8/22/2014
8/22/2014
8/22/2014
8/22/2014
8/22/2014
Volatile Organic Compounds by EPA Method 8260B
Acetone I 8260B
0.230
ND
ND
ND
ND
ND
100000
24
Polynuclear Aromatic Hydrocarbons (PAH) by EPA Method 8270C
All Target Analytes I 8270C
I ND
ND
ND
ND
ND
ND
NA
NA
Notes:
All concentrations are reported in milligrams per kilogram (mg/kg).
BOLD results exceed their respective Preliminary Health -Based PSRG and/or Protection of Groundwater PSRG
PSRG - Preliminary Soil Remediation
ft, bgs - feet below ground surface
ND - Not Detected NA - Not Applicable

TABLE 2
GROUNDWATER SAMPLING ANALYTICAL RESULTS
109 - 111 WEST LEWIS STREET
109 AND 111 WEST LEWIS STREET
GREENSBORO, GUILFORD COUNTY, NORTH CAROLINA
ENVIROASSESSMENTS PROJECT NO. 14-9927.2
Sample ID
Analytical
Method
TMW-1
TMW-2
TMW-3
TMW-4
MW-3*
NCAC 2L Groundwater
Standard
Gross Contamiantion
Level (GCL)
DWM Non -Residential Vapor Intrusion
Groundwater Screening Level (GWSL)
Collection Date
1 8/22/2014
8/22/2014
8/22/2014
8/22/2014
8/22/2014
Volatile Organic Compounds by EPA Method 8260B
Acetone
8260B
40.7
46.8
ND
ND
ND
6000
6000000
19000000
Benzene
8260B
59.8
ND
ND
ND
4.7
1
5000
69.3
Toluene
8260B
4.4
ND
ND
14.8
ND
600
260000
16100
Ethylbenzene
8260B
352
77.5
ND
668
65.8
600
84500
152
Xylenes, total
8260B
325
49.8
ND
1030
ND
500
85500
414
Naphthalene
8260B
316
99.9
4.0
420
53.9
6
6000
146
Tetrachloroethene (PCE)
8260B
ND
ND
ND
ND
13.1
0.7
700
48.4
Trichloroethene (TCE)
8260B
ND
ND
ND
ND
1.2
3
3000
4.35
Styrene
8260B
9.8
ND
ND
ND
ND
70
70000
7790
2-Butanone (MEK)
8260B
29.2
30.0
ND
ND
17.5
4000
4000000
1880000
Cis-1,2-Dichloroethene
8260B
ND
ND
ND
ND
2.8
70
70000
NE
p-Isopropyltoluene
8260B
ND
23.4
ND
ND
ND
25
11700
NE
2-Chlorotoluene
8260B
ND
ND
ND
58.3
ND
100
NE
NE
4-Methyl-2-Pentanone (MIBK)
8260B
31.3
13.2
ND
ND
ND
100
100000
466000
Polycyclic Aromatic Hydrocarbons (PAH) by EPA Method 8270C
Naphthalene
8270C
102
ND
ND
187
24.6
6
6000
146
1-Methylnaphthalene
8270C
14.9
ND
ND
16.7
13.7
1**
NE
NE
2-Methylnaphthalene
I 8270C
33.0
ND
ND
33.7
ND
30
NE
NE
Notes:
*MW-3 is located off -site to the northwest of the Site at 120 West Lewis Street (currently the Lotus Lounge).
**Interim Maximum Allowable Concentration (IMAC) Effective April 1, 2011.
All concentrations are reported in micrograms per liter(ug/L).
BOLD results exceed their respective NCAC 2L Groundwater Standard or IMAC
ND - Not Detected
NE - Not Established = Concentration exceeds the NCDENR, DWM Non -Residential Vapor Intrusion Groundwater Screening Level (GWSL).
NA - Not Applicable NCDENR - North Carolina Department of Environment and Natural Resources
NT - Not Tested DWM - Disvision of Waste Management

TABLE 3
SOIL -GAS ANALYTICAL RESULTS
109 - III WEST LEWIS STREET
109 AND III WEST LEWIS STREET
GREENSBORO, GUILFORD COUNTY, NORTH CAROLINA
ENVIROASSESSMENTS, PLLC PROJECT NO. 14-9900.2
Sample ID
Analytical
Method
VP-1
Non -Residential Sub Slab and Exterior
Soil Gas Screening Level (SGSL)
Sample Date
8/22/2014
Volatile Organic Compounds by EPA Method T015
Acetone
T015
50.4
2720000
Benzene
T015
16.5
1570
Bromoform
T015
44.4
NE
Bromomethane
T015
2.3
438
2-Butanone (MEK)
T015
16.4
438000
Carbon Disulfide
T015
27.3
61300
Chlorobenzene
T015
3.2
4380
Chloroethane
T015
2.7
876000
Chloromethane
T015
4.3
7880
Cyclohexane
T015
14.4
526000
Dichlorodifluoromethane
T015
2.6
8760
Ethylbenzene
T015
12.1
4910
4-Ethyltoluene
T015
9.1
NE
n-Heptane
T015
16.2
NE
n-Hexane
T015
37.9
6130
2-Hexanone
T015
4.6
2630
Methylene Chloride
T015
63.2
52600
Naphthalene
T015
7.0
263
Styrene
T015
2.4
87600
Tetrachloroethene (PCE)
T015
8.2
3500
THC as Gas
T015
4370
NE
Toluene
T015
22.9
438000
1, 1, 1 -Trichloroethane
T015
2.6
438000
Trichloroethene (TCE)
T015
2.2
175
1,2,4-Trimethylbenzene
T015
25.9
613
1,3,5-Trimethylbenzene
T015
6.9
NE
Vinyl Chloride
T015
3.6
2790
m&p-Xylene
T015
29.5
8760
o-Xylene
T015
12.3
8760
Notes:
Samples collected 8/22/2014 for approximately 14 minutes.
All concentrations are reported in micrograms per cubic meter (ug/m3).
ND - Not Detected above laboratory reporting limits
NE - Not Established
DWM - Division of Waste Management
BOLD results exceed Exterior Soil Gas Screening Level established by the DWM (June 2014).
J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.

TABLE 4
PIEZOMETER WELL CONSTRUCTIONIWATER LEVEL INFORMATION
109-111 WEST LEWIS STREET
109 and 111 WEST LEWIS STREET
GREENSBORO, GUILFORD COUNTY, NORTH CAROLINA
ENVIROASSESSMENTS PROJECT NO. 14-9927.2
Relative
Water
Total Well
Screened
Top of Casing
DTW
Installation
Well Inner
Table
Well I.D.Depth
Interval
Relative
8/25/2014
Date
Diameter (in.)
Elevation
(ft.,bgs)
(ft., bgs)
Elevation (ft.)
(ft., TOC)
(ft.)
8/25/2014
MW-3
1/5/2003
2
15
5-15
99.72
9.54
90.18
TMW-1
8/22/2014
1
18
8-18
103.33
15.31
88.02
TMW-2
8/22/2014
1
20
10-20
102.41
14.19
88.22
TMW-3
8/22/2014
1
18
8-18
102.81
13.95
88.86
IL TMW-4
8/22/2014
1
20
10-20
1 103.56
15.33
1 88.23
bgs = below ground surface
TOC = top of casing.
DTW = depth to water.

APPENDICES

APPENDIX 1
PHASE II SITE PHOTOS

Site Photos —Phase II ESA
109-111 West Lewis Street
Greensboro, Guilford County, North Carolina
EA Project Number: 14-9927.2
Photograph #1- Sub -slab vapor sample (VP-1) boring location (109 W. Lewis St.).
Photograph #2- Soil boring / temporary monitoring well (S-1 /TMW-1) boring location.
August2014

Site Photos —Phase II ESA August 2014
109-111 West Lewis Street
Greensboro, Guilford County, North Carolina
EA Project Number: 14-9927.2
Photograph #3- Soil borings & temporary monitoring wells (S-1/TMW-1 & S-2/TMW-2) boring
locations.
Photograph #4- Soil boring S-3 / temporary monitoring well (S-3/TMW-3) boring location.

Site Photos —Phase II ESA
109-111 West Lewis Street
Greensboro, Guilford County, North Carolina
EA Project Number: 14-9927.2
Photograph #5- Soil borings S-4 and S-5 (soil samples S-4-2 and S-5-2) locations.
Photograph #6- Soil borings S-6 / temporary monitoring well (TMW-4) boring location.
August2014

Site Photos —Phase II ESA
109-111 West Lewis Street
Greensboro, Guilford County, North Carolina
EA Project Number: 14-9927.2
August2014
Photograph #7- Off -site groundwater monitoring well MW-3 (Lotus Lounge; 120 W. Lewis St.).
Photograph #8- Off -site groundwater monitoring well MW-3 (Lotus Lounge; 120 W. Lewis St.).

APPENDIX 2
SOIL BORING AND WELL CONSTRUCTION LOGS

Boring /Well Construction Log
Well Construction Permit Number
I. D. Number
Project Name
Project No.
Geologist
Start Date
S-1 /TWM-1
109-111 West Lewis Street
14-9927.2
Mike McDermott
812212014 Complete Date 812512014
Purpose
Contractor
Registration No.
Driller
Equipment
Phase II ESA
Regional Probing Services
Truck -Mounted
Drilling Method: Direct Push Technology
Comments Inside 109 W. Lewis St. building, near western wall adjoining III W Lewis St. building. Southwest of vapor sample boring VP-1
OVM
Well Construction
Information
Depth
From - To
Soil / Rock Description / Comments
(pp-)
@ Depth (ft.)
Borehole Dia.
0 - 2"
Concrete
0.0 @ 2-6'
Riser Type
2"- 4'
Tan/red stiff clay and dark brown/black silt, no petrolum or solvent odor
0.5 @ 8"
Diameter
4 - 16'
Tan/red clayey silt, petroleum odor @ 8-16, moist @ 8-16'
0.7 @ 10'
Screen Type
16 - 18'
Brown/gray micaceous clayey silt, wet, strong petroleum odor
1.4 @ 12'
Diameter
6.4 @ 14'
Riser Interval
70.1 @ 16'
Screen Interval
Soil Sample S-1-2 collected @ 2' (1020 hrs)
162 @ 18'
Slot Size
Grout Type
Temporarymonitoring well (TMW-1) installed to 18' with screen @ 8-18'
Interval
DTW = 19.41 below TOC after well installation
Bentonite Type
Groundwater sample TMW-1 collected (1445 hrs)
Interval
Filter Pack
TWM-1 abandoned on 812512014
Interval
Total Depth
R.P.* Elevation
Datum
Water Level Information
Date
W.L.Below R.P.
-
R.P. = Reference Point W.L. = Water Level TBM= Temporary Benchmark MSL = Mean Sea Level
OVM= Organic Vapor Measurement * TOC = Top of casing GS = Ground surface

Boring /Well Construction Log
Well Construction Permit Number
I. D. Number
Project Name
Project No.
Geologist
Start Date
S-2 / TWM-2
109-111 West Lewis Street
14-9927.2
Mike McDermott
812212014 Complete Date 812512014
Purpose
Contractor
Registration No.
Driller
Equipment
Phase II ESA
Regional Probing Services
Truck -Mounted
Drilling Method: Direct Push Technology
Comments Inside 109 W. Lewis St. building, near western wall adjoining III W Lewis St. building. North of S-1/TMW--1 boring.
OVM
Well Construction
Information
Depth
From - To
Soil / Rock Description / Comments
(pp-)
@ Depth (ft.)
Borehole Dia.
0 - 2"
Concrete
0.0 @ 2-6'
Riser Type
2"- 12'
Tan/red clayey silt, moist @ 9-12', no petroleum or solvent odor
Diameter
12 - 20'
Brown/Gray micaceous clayey silt, moist @ 12-14 , wet @ 14-20', petroleum
Screen Type
odor
Diameter
Riser Interval
Soil Sample S-2-2 collected @ 2' (1100 hrs)
Screen Interval
Slot Size
Grout Type
Temporarymonitoring well (TMW-2) installed to 20' with screen @ 10-20'
Interval
DTW = 15.21 below TOC after well installation
Bentonite Type
Groundwater sample TMW-2 collected (1500 hrs)
Interval
Filter Pack
TWM-2 abandoned on 812512014
Interval
Total Depth
R.P.* Elevation
Datum
Water Level Information
Date
W.L.Below R.P.
-
R.P. = Reference Point W.L. = Water Level TBM= Temporary Benchmark MSL = Mean Sea Level
OVM= Organic Vapor Measurement * TOC = Top of casing GS = Ground surface

Boring /Well Construction Log
Well Construction Permit Number
I. D. Number
Project Name
Project No.
Geologist
Start Date
S-3 / TWM-3
109-111 West Lewis Street
14-9927.2
Mike McDermott
812212014 Complete Date 812512014
Purpose
Contractor
Registration No.
Driller
Equipment
Phase II ESA
Regional Probing Services
Truck -Mounted
Drilling Method: Direct Push Technology
Comments Northwest exterior of 109 W. Lewis St. building
OVM
Well Construction
Information
Depth
From - To
Soil / Rock Description / Comments
(pp-)
@ Depth (ft.)
Borehole Dia.
0 - 2"
Concrete
0.0 @ 2-6'
Riser Type
2"- 4'
Tan stiff clay, no petroleum or solvent odor
Diameter
4 - 12'
Tan/red clayey silt, no petroleum or solvent odor
Screen Type
12 - 16'
Tan/gray clayey silt, moist, slight petroleum odor
Diameter
16 - 18'
Tan sandy silt, moist, no petroleum or solvent odor
Riser Interval
Screen Interval
Probe refusal encountered @ 18'
Slot Size
Grout Type
Soil Sample S-3-2 collected @ 2' (1200 hrs)
Interval
Bentonite Type
Temporarymonitoring well (TMW-3) installed to 18' with screen @ 8-18'
Interval
DTW = 16.42 below TOC after well installation
Filter Pack
Groundwater sample TMW-3 collected (1530 hrs)
Interval
Total Depth
TWM-3 abandoned on 812512014
R.P.* Elevation
Datum
Water Level Information
Date
W.L.Below R.P.
-
R.P. = Reference Point W.L. =Water Level TBM= Temporary Benchmark MSL = Mean Sea Level
OVM= Organic Vapor Measurement * TOC = Top of casing GS = Ground surface

Boring /Well Construction Log
Well Construction Permit Number
I. D. Number
Project Name
Project No.
Geologist
Start Date
S-4
109-111 West Lewis Street
14-9927.2
Mike McDermott
812212014 Complete Date 812212014
Purpose
Contractor
Registration No.
Driller
Equipment
Phase II ESA
Regional Probing Services
Truck -Mounted
Drilling Method: Direct Push Technology
Comments Southern exterior of 109 W. Lewis St. building
OVM
Well Construction
Information
Depth
From - To
Soil / Rock Description / Comments
(pp-)
@ Depth (ft.)
Borehole Dia.
0 - 4'
Tan stiff clay, no petroleum or solvent odor
0.0 @ 2-8'
Riser Type
4 - 8'
Tan clayey silt, no petroleum or solvent odor
Diameter
Screen Type
Soil Sample 5-4-2 collected @ 2' (1310 hrs)
Diameter
Riser Interval
Boring backfilled with bentonite after sample collection
Screen Interval
Slot Size
Grout Type
Interval
Bentonite Type
Interval
Filter Pack
Interval
Total Depth
R.P.* Elevation
Datum
Water Level Information
Date
W.L.Below R.P.
-
R.P. = Reference Point W.L. =Water Level TBM= Temporary Benchmark MSL = Mean Sea Level
OVM= Organic Vapor Measurement * TOC = Top of casing GS = Ground surface

Boring /Well Construction Log
Well Construction Permit Number
I. D. Number
Project Name
Project No.
Geologist
Start Date
S-5
109-111 West Lewis Street
14-9927.2
Mike McDermott
812212014 Complete Date 812212014
Purpose
Contractor
Registration No.
Driller
Equipment
Phase II ESA
Regional Probing Services
Truck -Mounted
Drilling Method: Direct Push Technology
Comments Southern exterior of 111 W. Lewis St. building, west of soil boring S-4
OVM
Well Construction
Information
Depth
From - To
Soil / Rock Description / Comments
(pp-)
@ Depth (ft.)
Borehole Dia.
0 - 2'
Dark brown stiff clay, no petroleum or solvent odor
0.0 @ 2-8'
Riser Type
2 - 8'
Tan/red clayey silt, no petroleum or solvent odor
Diameter
Screen Type
Soil Sample 5-5-2 collected @ 2' (1330 hrs)
Diameter
Riser Interval
Boring backfilled with bentonite after sample collection
Screen Interval
Slot Size
Grout Type
Interval
Bentonite Type
Interval
Filter Pack
Interval
Total Depth
R.P.* Elevation
Datum
Water Level Information
Date
W.L.Below R.P.
-
R.P. = Reference Point W.L. =Water Level TBM= Temporary Benchmark MSL = Mean Sea Level
OVM= Organic Vapor Measurement * TOC = Top of casing GS = Ground surface

Boring /Well Construction Log
Well Construction Permit Number
I. D. Number
Project Name
Project No.
Geologist
Start Date
S-6 / TWM-4
109-111 West Lewis Street
14-9927.2
Mike McDermott
812212014 Complete Date 812512014
Purpose
Contractor
Registration No.
Driller
Equipment
Phase II ESA
Regional Probing Services
Truck -Mounted
Drilling Method: Direct Push Technology
Comments Southern exterior of 111 W. Lewis St. building, west of soil boring S-5.
OVM
Well Construction
Information
Depth
From - To
Soil / Rock Description / Comments
(pp-)
@ Depth (ft.)
Borehole Dia.
0 - 2'
Dark brown clayey silt, no petroleum or solvent odor
0.0 @ 2-6'
Riser Type
2 - 12'
Brown clayey silt, moist @ 8-12', no petroleum or solvent odor
Diameter
12 - 20'
Gray/tan silty sand, moist @ 12-16, wet @ 16-20 , solvent odor
Screen Type
Diameter
Soil Sample S-6-2 collected @ 2' (1345 hrs)
Riser Interval
Screen Interval
Temporarymonitoring well (TMW-4) installed to 20' with screen @ 10-20'
Slot Size
DTW = 15.45 below TOC after well installation
Grout Type
Groundwater sample TMW-4 collected (1430 hrs)
Interval
Bentonite Type
TWM-3 abandoned on 812512014
Interval
Filter Pack
Interval
Total Depth
R.P.* Elevation
Datum
Water Level Information
Date
W.L.Below R.P.
-
R.P. = Reference Point W.L. = Water Level TBM= Temporary Benchmark MSL = Mean Sea Level
OVM= Organic Vapor Measurement * TOC = Top of casing GS = Ground surface

Boring /Well Construction Log
Well Construction Permit Number
I. D. Number
Project Name
Project No.
Geologist
Start Date
VP-1
109-111 West Lewis Street
14-9927.2
Mike McDermott
812212014 Complete Date 812212014
Purpose
Contractor
Registration No.
Driller
Equipment
Phase II ESA
Regional Probing Services
Truck -Mounted
Drilling Method: Direct Push Technology
Comments Interior of] 09 W. Lewis St. building, near floor drain near the center of the building.
OVM
Well Construction
Information
Depth
From - To
Soil / Rock Description / Comments
(pp-)
@ Depth (ft.)
Borehole Dia.
0 - 4'
Tan stiff clay, no petroleum or solvent odor
Riser Type
Diameter
Vapor sample point and teflon tubing inserted to 3'
Screen Type
sand @ 2.5 - 4'
Diameter
Connected 1-Liter summa canister to sampling line
Riser Interval
Screen Interval
Initial vacuum = -27 inches Hg / Sample start time = 0950 hrs
Slot Size
Final vacuum = -3 inches Hg /sample end time = 1004 hrs
Grout Type
Interval
Bentonite Type
Interval
Filter Pack
Interval
Total Depth
R.P.* Elevation
Datum
Water Level Information
Date
W.L.Below R.P.
-
R.P. = Reference Point W.L. = Water Level TBM= Temporary Benchmark MSL = Mean Sea Level
OVM= Organic Vapor Measurement * TOC = Top of casing GS = Ground surface

APPENDIX 4
FIELD DATA SHEETS FOR SUB -SLAB VAPOR SAMPLING

FIELD DATA - VAPOR INTRUSION
PROJECT NAME: 1 09-1 11 W. Lewis Street
PROJECT ADDRESS: 149-11 1 W. Lewis Street
CITY, COUNTY, STATE: Greensboro, Guilford County, NC
IHSB NUMBER: V/19
EA PROJECT Nl iM A: 14-9927.2
Sample I❑
Sample Type (Circle One)
SLib-Slab I qkdoor Air 1 Soil -Gas
Sample Location
p ,Sol-,
Field MeaNuremena
Percent (%} Helium - Bucket
1 Time:
Percent {q/4} Helium - Tedlar Bag
&jh / Time:
Canister Number:
Canister Pressure (Hg) - START
Sample Collection START date
I Lf
Sample Collection START Time
Canister Pressure (1-1g) - END
Sample Collection END date
a�
Sample Collection END Time
�,y]
Notes: r
{r 1 1 ]7rh'r`/, fVfl�` oaf j i-1 .1 fV tl CQs'l f Cr
-8j c� S j �
r
cJ vct vxc C e( 1 p q

Monitoring Well Installation Report
Former Odorless Cleaners
DSCA ID: DC410047
205 West Lewis Street
Greensboro, Guilford County
North Carolina Dry -Cleaning
Solvent Cleanup Act Program
H&H Job No. DSO-109G
June 7, 2021
1 .
hart hickman
SMARTER ENVIRONMENTAL SOLUTIONS
#C-1269 Engineering
#245 Geology
2923 South Tryon Street, Suite 100 3921 Sunset Ridge Rd, Suite 301
Charlotte, NC 28203 Raleigh, NC 27607 www.harthickman.com
704.586.0007 main 919.847.4241 main

Table 1: Site Chronology
DSCA ID No.: DC410047
Chronology of Events
Instructions: Brief description of all significant events that have occurred since a problem was
Date
suspected at the facility. Commence with the first date a problem was suspected and continue
through the most recent activity described in the current report.
Hart & Hickman, PC (H&H) completed a passive soil gas survey and receptor survey to determine if a solvent release
August - September
had occurred at the subject site. twenty passive soil samplers (PS-lthrough PS-20) were collected in the vicinity of the
2016
former dry cleaner. Tetrachloroethylene (PCE) was detected in 13 of the 20 samples with no daughters compounds
detected. Other petroleum constituents were detected in samplers. H&H recommended conducting a limited soil and
groundwater sampling to evaluate the areas where highest concentrations were identified in the soil gas.
H&H completed a limited soil and groundwater sampling event to evaluate the areas where the highest concentrations
were identified during the passive soil gas survey. Seven soil samples were collected from four soil borings (SB-1
December 2016
through SB-4) and four groundwater samples (TMW-1 through TMW-4) were collected from temporary monitoring
wells. On February 22, 2017, H&H submitted an assessment report to the DSCA Program documenting the sampling
activities and results.
H&H conducted additional groundwater assessment activities at the site to further delineate the extent of groundwater
July 2017
impacts at the site. The additional assessment included the installation of five permanent Type -II monitoring wells (MW
1, MW-2, MW-3, MW-4, and MW-5) and subsequent sampling of the wells. On September 29, 2017, H&H submitted
a report to document the groundwater assessment activities and results.
H&H conducted additional groundwater assessment activities at the site to further delineate to the extent of groundwater
impacts at the site. The additional assessment included the installation and sampling of four permanent shallow
August 2018
monitoring wells (MW-6, MW-7, MW-8, and MW-9) and one deep permanent monitoring well (MW-4D). H&H also
collected groundwater samples from the existing site monitoring wells with the exception of MW-5, which could not be
located. On October 4, 2018, H&H submitted a report to document the groundwater assessment activities and results.
H&H collected four soil gas samples (TSG-2 through TSG-5) on the adjacent downgradient property to the west of the
former Odorless Cleaners source property to evaluate potential vapor intrusion risks associated with the dry-cleaning
January 2019
solvent release. PCE was detected at low concentrations in three of the four samples, and the calculated risks associated
with the detected PCE concentrations were acceptable for both residential and non-residential use. On March 7, 2019,
H&H submitted a letter report to the DSCA Program documenting the sampling activities and results.
H&H conducted a quarterly groundwater monitoring event, which included gauging water levels and collecting
March 2019
groundwater samples from the site monitoring wells. In April 2019, H&H provided a brief e-mail update to the DSCA
Program with the results.
H&H conducted a quarterly groundwater monitoring event, which included gauging water levels and collecting
June 2019
groundwater samples from the site monitoring wells. In July 2019, H&H provided a brief e-mail update to the DSCA
Program with the results.
H&H conducted a quarterly groundwater monitoring event, which included gauging water levels and collecting
December 2019
groundwater samples from the site monitoring wells. On March 31, 2020, H&H submitted a groundwater monitoring
report to the DSCA Program documenting the March, June, and December groundwater monitoring events.
H&H conducted additional groundwater assessment activities at the site to further delineate the lateral and vertical extent
of groundwater impacts. The additional assessment included the installation of two off -source permanent top -of -
March 2021
bedrock monitoring wells (MW-8D and MW-1 OD) and one source area permanent bedrock monitoring well (MW-4BR).
H&H also collected groundwater samples from the newly installed and select existing site monitoring wells (MW-1,
MW-4, MW-4D, MW-6, MW-7, and MW-8). On June 7, 2021, H&H submitted a report to document the groundwater
assessment activities and results.

leW-6
VACANT
�MW-10D
MW-4BR
-01 MW-4
MW-7 MW-4D
W
(610 S. EUGENE ST)
W
W
MW-8 DRAM & DRAUGHT---"C
MW-8D
VACANT
GREENSBORO CITGO GAS
URBAN MINISTRY MW-9 STATION
I
i
i
I
i
LEGEND
SOURCE PROPERTY BOUNDARY
PARCELBOUNDARY
PERMANENT TYPE II MONITORING WELL
G PERMANENT TYPE III MONITORING WELL
4 TEMPORARY MONITORING WELL
DESTROYED MONITORING WELL
NOTES:
1. MONITORING WELLS MW-1 THROUGH MW-5 WERE INSTALLED IN JULY 2017.
2. TEMPORARY MONITORING WELLS TMW-1 THROUGH TMW-4 WERE INSTALLED,
SAMPLED, & ABANDONED IN DECEMBER 2016.
3. MONITORING WELLS MW-4D AND MW-6 THROUGH MW-9 WERE INSTALLED IN
AUGUST 2018.
4. MONITORING WELLS MW-4BR, MW-8D, & MW-10D WERE INSTALLED IN MARCH 2O21.
5. MONITORING WELL MW-5 FOUND DESTROYED DURING AUGUST 2018 SAMPLING
EVENT DUE TO CONSTRUCTION ACTIVITIES ON 300 W. GATE CITY BOULEVARD.
FE CITY BLVD)
i
�MW-3
r` ` TMW-`
1 (205 W. LEWIS ST/
1 /
TMW-2
MW-1 /
MW-2
I
/ TMW-3
1
I 1
I
FORGE
GREENSBORO
TMW-4 1
�1
ELITE CAR AUDIO
& AUTO TINT
GATE C/TYSOUCEVARD
9
APPROXIMATE
0 100 200
SCALE IN FEET
i
I
i
I
i
TITLE
SITE MAP
PROJECT FORMER ODORLESS CLEANERS
DSCA SITE ID: DC410047
205 W. LEWIS STREET
GREENSBORO, NORTH CAROLINA
South Tryon Street -Suite 100
hart h i c k m a n Charlotte, North Carolina 28203
704-586-0007(p) 704-586-0373(f)
SMARTER ENVIRONMENTAL SOLUTIONS License # C-1269 / #C-245 Geology
DATE: 5-4-21 REVISION NO. 0
JOB NO. DSO-109 ATTACHMENT NO. 4

Client: DSCA
WELL LOG
hart ► hickman
Project: Former Odorless Cleaners (DSO-109)
Well No. MW-10
5MARTFR EWRONWNTAL501l1T1ON5
Address: 205 W. Lewis Street, Greensboro, NC
Page: 1 of 1
Drilling Start Date: 03/17/2021
Boring Depth (ft): 50 ft bgs
Well Depth (ft): 49.20 ft bgs
Drilling End Date: 03/17/2021
Boring Diameter (in): 6.25
Well Diameter (in): 2.0
Drilling Company: Geologic Exploration
Sampling Method(s): DP, GR (Drill Cuttings)
Screen Slot (in): 0.010
Drilling Method: Hollow Stem Auger
DTW During Drilling (ft):
Riser Material: Sch 40 PVC
Drilling Equipment: Geoprobe 3230 DT
DTW After Drilling (ft): 6.78 ft bgs
Screen Material: Sch 40 PVC Slotted
Driller:
Top of Casing Elev. (ft):
Seal Material(s): Bent. -Cement Grout/Bent.
Chips
Logged By: SQM
Location (X,Y):
Filter Pack: Sand Pack
COLLECT
MEASURE
>
w
W
z
w
Ep
0
JO
w a
4
a,
N
a
$
Z
SOIL/ROCK VISUAL DESCRIPTION
n
E
a
w
=
~
w
�2
m
E
U
a
0
n
m
w
J
Q
O
CJ
�-
0
0
@
m
EL
0 0
DP
(0') GRAVEL FILL; some organic -rich Silty Clay
4.4
(1') Silty CLAY (CLML); medium plasticity, soft, moist, dark gray and black, stained,
227.9
some wood fragments
5
(3.5') Clayey SILT (MLCL); medium stiff, moist, dark brown, gray, black, and dull red,
108.4
5
slight odor
6.8
7' Sand SILT MLS medium stiff, wet, tan, gray, and dull yellow, relic structures and
( ) Y ( )� 9 Y,
foliations (SAPROLITE)
2.6
10
2.3
10
(115) Clayey SILT (MLCL); trace sand, medium plasticity, stiff, wet, tan, gray, brown,
4.7
and black, relic structures and foliations (SAPROLITE)
15
3.8
15
5.4
5.1
20
(21') Sandy SILT (MLS); trace sand, medium stiff, wet, brown, tan, gray, and black, relic
6.0
20
structures and foliations (SAPROLITE)
3.9
25
4.3
25
(26') Silty CLAY (CLML); stiff, wet, dark brown, dull orange, and gray, relic structures and
3.8
foliations (SAPROLITE)
2.0
30
4.9
30
(32') Silty CLAY (CLML); trace sand, soft, wet, gray, brown, black, and white, abundant
relic foliations (SAPROLITE)
35
4.4
35
40
= _ =
2.8
40
==
(41') Poorly graded SAND with silt (SP-SM); very dense, wet, dark gray, white, and
black, some rock fragments (PARTIALLY WEATHERED ROCK)
45
BEDROCK- Competent slightly weathered (GRANITE)
3 2(49.5')
45
50 50
NOTES: Hole precleared to 5.0' by Geologic Exploration using hand auger.
generated using GroundLogs.online

V
0
MW-10D
(821.67)
00nv
M�W_ 7
(822.80)
1 00
VACANT BUILDING
S
(300 W. GATE
/ MW_8 DRAM & DRAUGHT-----"o
MW-8D (825.57)
(825.64) VACANT
GREE`O 0 CITGO GAS
URBAN MINI
ST�1` MW-9 STATION
(825.30)
I \
I
i
LEGEND
— - - —
SOURCE PROPERTY BOUNDARY
PARCELBOUNDARY
PERMANENT TYPE II MONITORING WELL
O
PERMANENT TYPE III MONITORING WELL
4
TEMPORARY MONITORING WELL
DESTROYED MONITORING WELL
(825.30)
GROUNDWATER ELEVATION (FT MSL)
826
GROUNDWATER ELEVATION CONTOUR (FT MSL)
(DASHED WHERE INFERRED)
INFERRED GROUNDWATER FLOW DIRECTION
NOTES:
1. MONITORING WELLS GAUGED ON 3/22/21
2. MW-4D, MW-4BR, MW-8D & MW-10D NOT USED IN GROUNDWATER CONTOURS.
3. MONITORING WELL MW-5 FOUND DESTROYED DURING AUGUST 2018 SAMPLING
EVENT DUE TO CONSTRUCTION ACTIVITIES ON 300 W. GATE CITY BOULEVARD.
P,
co
MW-6�
(825.68)
MW-4BR
MW-4 (825.44)
(825.64) � I
MW-4D
(825.17)
(y
s
00
N
N 00
0 I I
MW-3
(828.10)
IF TMW-1
. LE IS ST%
TMW-2
h f #MW-1
(827.30) - (827 88)
TMW-3 (�
J / 1
W
PRGE
Gk�j SBORO
Tv1
� I i
I1
ELITE CAR AUDIO I
& AUTO TINT
GATE C/TySOUCEVARD
9
APPROXIMATE
0 100 200
SCALE IN FEET
TITLE SHALLOW GROUNDWATER GRADIENT MAP
(MARCH 2O21)
PROJECT FORMER ODORLESS CLEANERS
DSCA SITE ID: DC410047
205 W. LEWIS STREET
GREENSBORO, NORTH CAROLINA
14
hart I hickman 2)33 South 7 n-on Sheet -Suite 100
1 Charlotte, North Carolina 28203
704-586-0007(p) 704-586-0373(f)
SMARTER ENVIRONMENTAL SOLUTIONS License # C-1269 / #C-245 Geologc
DATE: 6-1-21 REVISION NO. 0
JOB NO. DSO-109 ATTACHMENT NO. 6
a
a
a
7

� I
I
/ � 1
I
\ 1
M W-6
(0.0254)
VAC T MW-3
�MW-10D I (<0.00050)*
(<0.0005o0)
TMW-1
1 ♦
M4BR (205 W. LE S ST%
W-1 /
MW-4 # (1.23) TMW-2
-7 (0.248)
M W-4D M W-1
(0.588) W
(<0.000500)
#(0.00380) MW-2
-�_ (<0.00050)*
(610 S. EUGENE iT) ;
TMW-3� I
i
Fri W I o
I
0
O FORGE
GREENSBORO
VACANT BUILDING
ppA
O I(300 W. GA LVD)
TM ` �
MW-8 DRAM & DRAUGHT \
\ I I
MW-81D (<0.000500)
(<0.000500) VACANT 1
I
IELITE CAR AUDIO ` I
& AUTO TINT i
I
--------
Gg
GREENSBORO "- I #MW-9 CITGO GAS TFC/TyBOU�EVgRD
�-
URBAN MINISTRY i STATION
i
II I I
I 1
LEGEND
— — — SOURCE PROPERTY BOUNDARY
PARCELBOUNDARY
PERMANENT TYPE II MONITORING WELL APPROXIMATE
0 100 200
G PERMANENT TYPE III MONITORING WELL
SCALE IN FEET
TEMPORARY MONITORING WELL
TITTI
DESTROYED MONITORING WELL PCE ISOCONCENTRATION MAP (MARCH 2O21)
(0.248) PCE CONCENTRATION (mg/L) PROJECT FORMER ODORLESS CLEANERS
—0.007— PCE ISOCONCENTRATION CONTOUR (mg/L) DSCA SITE ID: DC410047205 W. LEWIS STREET
NOTES: GREENSBORO, NORTH CAROLINA
1. GROUNDWATER SAMPLES COLLECTED ON 3/22/21 & 3/23/21. � 2923 South Tryon Street -Suite 100
hart h i c k m a n Charlotte, North Carolina 28203
2. * INDICATES CONCENTRATION FROM 2019 GROUNDWATER SAMPLING EVENT. 704-586-0007(p) 704-586-0373(f
3. PCE = TETRACHLOROETHYLENE SMARTER ENVIRONMENTAL SOLUTIONS License # C-1269 / #C-245 Geology
4. MONITORING WELL MW-5 FOUND DESTROYED DURING AUGUST 2018 SAMPLING DATE: 6-1-21 REVISION NO. 0
EVENT DUE TO CONSTRUCTION ACTIVITIES ON 300 W. GATE CITY BOULEVARD.
JOB NO. DSO-109 ATTACHMENT NO. 7A

MW-10D
3/22/21
PCE
<0.000500
TCE
<0.000500
cis-1,2-DCE
<0.000500
# 17
W-10D
L
M W-7
MW-7
3/22/21
PCE
<0.000500
TCE
<0.000500
cis-1,2-DCE
<0.000500
MW-8
3/22/21
PCE
<0.000500
TCE
<0.000500
cis-1,2-DCE
<0.000500
MW-6
3/23/21
PCE
0.0254
TCE
0.00261
cis-1,2-DCE
0.000401 J
MW-4BR
3/23/21
PCE
1.23
TCE
0.0150
cis-1,2-DCE
0.0125
MW-4
3/23/21
PCE
0.248
TCE
0.00599
cis-1,2-DCE
0.00282
MW-41D
3/23/21
PCE
0.588
TCE
0.00577
cis-1,2-DCE
0.00286 J
MW-1
3/22/21
PCE
0.00380
TCE
0.00268
cis-1,2-DCE
<0.000500
JMW-4BR
MW-
MW-I4D
(610 S. EUGENE IT)
I
VACANT BUILDING
(300 W. GATE CITY BLVD)
MW-3
12/12/19
PCE
<0.00050
TCE
<0.00050
cis-1,2-DCE
<0.00050
MW-3
-(�TMW---1
(205 W. LEWIS
¢TM W-2
W
MW-1
h
CID
TMW-3�
W
MW-2 12/12/19
PCE <0.00050
TCE <0.00050
cis-1,2-DCE <0.00050
u I
MW-8 DRAM & DRAUGHT
IV I V V -:J� /
MW-8D ,
VACANT
MW-8D
PCE
3/22/21
<0.000500
MW-9 12/12/19
PCE <0.00050
TCE <0.00050
cis-1,2-DCE <0.00050
TCE
<0.000500
cis-1,2-DCE
<0.000500
GREENSBORO CITGO GAS
T URBAN MINISTRY MW-9 STATION
i
i
I �
I �
Ii
I � i
i I
LEGEND
LEGEND
SOURCE PROPERTY BOUNDARY
PARCELBOUNDARY
PERMANENT TYPE II MONITORING WELL
0 PERMANENT TYPE III MONITORING WELL
TEMPORARY MONITORING WELL
A. DESTROYED MONITORING WELL
SAMPLE ID
CONSTITUENT-
NOTES
W-10D
3/22/21
PCE
<0.000500
TCE
<0.000500
cis-1,2-DCE
<0.00050
SAMPLE DATE
-CONCENTRATION
(mg/L)
1. ONLY PCE-RELATED CONSTITUENTS ARE SHOWN ON FIGURE. SEE TABLE 8 FOR
COMPLETE SUMMARY OF DETECTED CONSTITUENTS
2. PCE = TETRACHLOROETHYLENE; TCE = TRICHOLORETHYLENE
DCE = DICHLOROETHYLENE
3. BOLD CONCENTRATION EXCEEDS NC 2L STANDARDS.
4. MONITORING WELL MW-5 FOUND DESTROYED DURING AUGUST 2018 SAMPLING
EVENT DUE TO CONSTRUCTION ACTIVITIES ON 300 W. GATE CITY BOULEVARD.
TM -
� I
ITE CAR AUDIO
& AUTO TINT
Gq TE C/T yBOU�E(rgR�
0
APPROXIMATE
0 100 200
SCALE IN FEET
' =E GROUNDWATER CONTAMINANT
CONCENTRATION MAP
F "'F FORMER ODORLESS CLEANERS
DSCA SITE ID: DC410047
205 W. LEWIS STREET
GREENSBORO, NORTH CAROLINA
-4 2123100
hart h i c k m a n Char South Tryon StolenStreet-282 3
Charlotte, North Carolina 28203
704-586-0007(p) 704-586-0373(f
SMARTER ENVIRONMENTAL SOLLTIONS License # C-1269 / #C-245 Geology
DATE: 6-1-21 REVISION NO. 0
JOB NO. DSO-109 ATTACHMENT NO. 7B

Monitoring Well Installation Report
Wades Dry Cleaning
DSCA ID: DC410052
607 S. Elm Street
Greensboro, Guilford County
North Carolina Dry -Cleaning
Solvent Cleanup Act Program
H&H Job No. DSO-147C
November 6, 2020
hart � hickman
SMARTER ENVIRONMENTAL SOLUTIONS
2923 South Tryon Street, Suite 100 3921 Sunset Ridge Rd, Suite 301
Charlotte, NC 28203 Raleigh, NC 27607 www.harthickman.com
704.586.0007 main 919.847.4241 main

Table 1: Site Chronology
DSCA ID No.: I DC410052
Chronology of Events
Instructions: Brief description of all significant events that have occurred since a problem was
Date
suspected at the facility. Commence with the first date a problem was suspected and continue
through the most recent activity described in the current report.
Terracon conducted a Limited Site Investigation and submitted a report to Range Properties on March 21, 2017.
March 2017
Terracon identified tetrachloroethylene (PCE) and its degradation products in soil and groundwater at the former dry-
cleaning facility.
April 2018
The Wades Dry Cleaning site is certified into the DSCA Program.
Hart & Hickman, PC (H&H) conducted initial prioritization assessment activities at the site, which included the
collection of soil samples from five soil borings (SB-5 through SB-9), installation and sampling of six temporary
November 2018
monitoring wells (TMW-4 through TMW-9), collection of one soil gas sample (TSG-1), collection of one crawlspace air
sample (CS-1), and collection of one sub -slab vapor sample (SS-1). H&H also completed a receptor survey within a 0.5-
mile radius of the former dry-cleaning facility. On January 31, 2019, H&H submitted a Prioritization Assessment
Report to the DSCA Program documenting the results of the assessment activities.
H&H conducted additional assessment activities at the site, which included the installation and sampling of three
June 2019
permanent monitoring wells (MW-1 through MW-3), collection of one soil gas sample (TSG-2), and collection of two
Shelby tubes. On October 3, 2019, H&H submitted a report to the DSCA Program documenting the results of the
assessment activities.
H&H conducted additional assessment activities at the site, which included the installation and sampling of two new
July 2020
permanent monitoring wells (MW-4 through MW-5) and sampling exsiting monitoring wells (MW-1, MW-2, and MW-
3). On November 6, 2020, H&H submitted a report to the DSCA Program documenting the results of the assessment
activities.
Page 1 of 1

Client: DSCA
WELL LOG
hart ► hickman
Project: Wade's Cleaners (DSO-147)
Well No. MW-4
I
SMARTER FWRONWWAL5OLLmON5
Address: 60 South Elm Street, Greensboro,
Page: 1 of 1
NC
Drilling Start Date: 7113120
Boring Depth (ft): 25.0
Well Depth (ft): 25.0
Drilling End Date: 7/13/20
Boring Diameter (in): 2.25
Well Diameter (in): 2.0
Drilling Company: GEX
Sampling Method(s): 5 ft Macrocore Sleeves
Screen Slot (in): 0.001
Drilling Method: Hollow Stem Auger
DTW During Drilling (ft):
Riser Material: Sch 40 PVC
Drilling Equipment: Geoprobe 3230 DT
DTW After Drilling (ft): 7.37
Screen Material: Sch 40 PVC Slotted
Driller: Jeremy Ringler
Top of Casing Elev. (ft):
Seal Material(s): Bent. -Cement Grout/Bent.
Chips
Logged By: Thomas Vaughan
Location (X,Y):
Filter Pack: Sand Pack
COLLECT
MEASURE
W
z
O
_
w
a
O
p
w
J
a
N
Q
N
o
SOIL/ROCK VISUAL DESCRIPTION
n
E
a
wo
g
�'
>
U
w
Q
O
U
E
o
p
o
m
U)
m
a
m
0 0
--(0') Asphalt /
0.6
(0.5') Silty SAND with gravel (SM); little fine -coarse gravel, loose, moist, gray/light
1.7
brown, slight odor
1.5
-
1.0
(S) Silty SAND (SM); little clay, loose, moist, gray/light brown
0.5
(4') Silty SAND (SM); little clay, loose, moist, light brown/tan
5
0.4
5
(5') Silty SAND (SM); medium dense, moist, light brown/gray/light gray
0.4
0.3
10
10
1.0
0.3
(1S) Silty SAND (SM); little clay, medium dense, moist, light brown/gray/light gray,
white PWR
15
2 0
15
(15.5') Sandy SILT (ML); medium stiff, wet, light brown/gray
0.0
(17') Silty SAND (SM); dense, wet, light brown/gray/brown/white, PWR
1.6
20
20
0.8
(21') Sandy SILT (ML); medium stiff, wet, brown/light brown/dark gray
(23') PWR: very dense, wet, white/light brown/tan
VV V
V
25
(245) DPT Refusal
25
(25') Boring terminated, HSA Refusal
30 30
NOTES: Hole precleared to 5.0' on 7/13/20 using hand auger.
generated using GroundLogs.onhne

COMMERCIAL
LEGEND
MV1
COMMERCIAL
GATEWAY CENTER PARKING AREA
620 S. ELM STREET
(COMMERCIAL)
GATEWAY CENTER OFFICE BUILDING
734 S. ELM STREET
(COMMERCIAL)
WEST GATE CITY BLVD
S. ELM STREET
J RESTAURANT)
S. ELM STREET
(VACANT)
W
co
W
ti
O
co
rm:w
-1(UST)
HORIGAN'S HOUSE OF TAPS
& THE BEARDED GOAT
603 S. ELM STREET
(COMMERCIAL)
MELLOW MUSHROOM
609 S. ELM STREET
(COMMERCIAL)
COMMERCIAL
MW-4
E
AL
A BITAEl
TM44.1-
COMMERCIAL
EAST LEW/S STREET
TMW-6h
TMW-3
F1
_
TMW-5�
N-2
I
M W-2
}TMW-1
�-1
`FORMER WADES
DRY CLEANING
(DC410052)
i
i
I
RESIDENTIAL
APARTMENTS
COMMERCIAL
LOMMERCIA
EAST GATE CITY BLVD
W
co
O
Z
J
Q
— — — — SOURCE PROPERTY BOUNDARY
PROPERTY BOUNDARY
BUILDING OUTLINE
GROUNDWATER ELEVATION (FT
MSL)
GROUNDWATER ELEVATION
CONTOUR (FT MSL)
INFERRED GROUNDWATER FLOW
DIRECTION
TEMPORARY MONITORING WELL
PERMANENT MONITORING WELL
NOTES:
1. MONITORING WELLS GAUGED ON 7/14/2020.
0
APPROXIMATE
0 60 120
SCALE IN FEET
JULY 2020
---- WADES DRY CLEANING
DSCA SITE NO: DC410052
607 SOUTH ELM STREET
GUILFORD COUNTY, NORTH CAROLINA
.4 2923 South Tryon Street -Suite 100
haft ,,y L I hICkman Charlotte, North Carolina 28203
704-586-0007(p) 704-586-0373(t
sNunm En EmsDKME WAS sadunons License # C-1269 / #C-245 Geologic
DATE: 11-6-20
REVISION NO. 0
JOB NO. DSO-147
ATTACHMENT NO. 6

r-m-w
-1(UST)
h EAST
TMW-Y TMW-6h
HORIGAN'S HOUSE OF TAPS
S. ELM STREET & THE BEARDED GOAT
J RESTAURANT) 603 S. ELM STREET
COMMERCIAL)
S. ELM STREET
(VACANT)
MELLOW MUSHROOM
W
609 S. ELM STREET
(COMMERCIAL)
co
W
MW-3_____�
ti
J
r
co
COMMERCIAL
620 S. ELM STREET
1�nKANACOOIAi \
M W-3
PCE
0.029
TCE
0.0024
cis-1,2-DCE
0.0014
COMMERCIAL
— - - E9MME-RCIAL _
W-3
N-1 TMW-%�
AW 2 I COMMERCIAL
MW-2 �
TMW-1
FORMER WADES
DRY CLEANING
(DC410052)
[COMMERCIAL
MW-1
PCE
<0.00050
TCE
<0.00050
cis-1,2-DCE
0.00033 J
I
i
I
I
OMMERCIA i
M W-2
PCE
0.00054
TCE
<0.00050
cis-1,2-DCE
<0.00050
RESIDENTIAL
APARTMENT:
LEGEND
— - - — SOURCE PROPERTY BOUNDARY
PROPERTY BOUNDARY
BUILDING OUTLINE
TEMPORARY MONITORING WELL
PERMANENT MONITORING WELL
r-SAMPLEID
MW-1
PCE
<0.00050
TCE
<0.00050
cis-1,2-DCE
0.00033 J
CONSTITUENT CONCENTRATION
(mg/L)
NOTES:
1. ONLY PCE DRY-CLEANING RELATED CONSTITUENTS
SHOWN.
2. SAMPLES COLLECTED ON 7/14/2020 AND 7/15/2020.
3. BOLD CONCENTRATIONS EXCEED NC 2L STANDARDS.
4. PCE=TETRACHLOROETHENE
TCE = TRICHLOROETHENE
DCE = DICHLOROETHENE
5. IMPACTS IDENTIFIED IN GROUNDWATER MONITORING
WELL MW-5 APPEAR TO BE ASSOCIATED WITH NEARBY
BROWNFIELDS SITES WEST LEWIS STREET
(17046-13-041) AND/OR MODEL LINEN (08007-04-041).
9
APPROXIMATE
60 120
1,Y�7_1��1�■y��l
WEST GATE CITY BLVD
EAST GATE CITY BLVD

•J
LEGEND
— — — — SOURCE PROPERTY BOUNDARY
PROPERTY BOUNDARY
BUILDING OUTLINE
TEMPORARY MONITORING WELL
PERMANENT MONITORING WELL
TEMPORARY MONITORING WELL
ASSOCIATED WITH BROWNFIELDS SITE
ABANDONED MONITORING WELL
ASSOCIATED WITH BROWNFIELDS SITE
(0.00054) PCE CONCENTRATION (mg/L)
-0 0007- PCE ISOCONTOUR (mg/L)
(DASHED WHERE INFERRED)
NOTES:
1. SAMPLES FROM MW-1 THROUGH MW-5 WERE COLLECTED
ON 7/14/2020 AND 7/15/2020.
2. HISTORICAL DATA FROM DSCA SITE TEMPORARY
MONITORING WELLS WAS CONSIDERED IN CONTOURING.
3. MW-1 DATA NOT USED IN CONTOURING DUE TO
INCONSISTENCY WITH SURROUNDING TEMPORARY WELL
DATA.
4. IMPACTS IDENTIFIED IN GROUNDWATER MONITORING
WELL MW-5 APPEAR TO BE ASSOCIATED WITH NEARBY
BROWNFIELDS SITES WEST LEWIS STREET (17046-13-041)
AND/OR MODEL LINEN (08007-04-041).
5. * DATA FROM TEMPORARY AND PERMANENT MONITORING
WELLS ASSOCIATED WITH NEARBY BROWNFIELDS SITES
WEST LEWIS STREET (17046-13-041) AND MODEL LINEN
(08007-04-041) WAS OBTAINED FROM PHASE//
ENVIRONMENTAL ASSESSMENT, WEST LEWIS STREET
PROPERTY PREPARED BY ENVIROASSESSMENTS, DATED
AUGUST 8, 2013 AND PHASE II ENVIRONMENTAL
ASSESSMENT, 109-111 WEST LEWIS STREET PREPARED
BY ENVIROASSESSMENTS, DATED SEPTEMBER 8, 2014.
SAMPLES WERE COLLECTED IN 2013 OR 2014.
9
APPROXIMATE
60 120
SCALE IN FEET
WEST GATE CITY BLVD f
EAST GATE CITY BLVD

Attachment C

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Attachment D

VaporP no
Using Vapor Pins® for Source Characterization
The Vapor Pin® is ideally suited for locating Volatile Organic Compound (VOC) contamination
sources beneath pavement. Our experience is that most sites have sources of contamination that
in addition to those associated with underground tanks and degreasing areas. Unsuspected
source areas often correspond to former exterior doors that were obscured by later building
expansion. Cox -Colvin has located such sources equipped with little more than some Vapor
Pins®, a hammer drill, and a multi -gas meter.
Cox-Colvin's approach to VOC source investigation consists of installing Vapor Pins® along a
grid, allowing the points to equilibrate, and collecting readings with a multi -gas meter. With a
team of two people, we've installed as many as 90 Vapor Pins® in one day, and sampled,
removed the Vapor Pins®, and plugged the holes on the following day.
For source characterization, we normally install brass Vapor Pins® in the stick-up configuration
on a grid spacing of 20 to 30 feet. We cover the Vapor Pins® with traffic cones and allow them
to equilibrate for at least an hour. We then collect field readings with a hand-held multi -gas
meter capable of measuring VOCs via Photo -Ionization Detector (PID), oxygen (02), and Lower
Explosive Limits (LEL). The PID indicates VOC sources. 02 in soil gas is normally lower than
in air, but unusually low levels (<5%), especially with high LEL readings, are characteristic of
methane generation (methanogenesis). Methanogenesis occurs when non -chlorinated solvents or
other organic matter degrades at too high a rate for 02 replenishment.
After collecting field readings at all of the sample points, samples are collected from locations
with elevated PID readings, and submitted to a laboratory for confirmation. Samples can be
collected into evacuated glass vials, Bottle Vacs, Tedlar bags, Summa canisters, sorbent tubes,
and potentially other devices. Some containers do not offer low enough reporting levels for
vapor intrusion sampling, but low levels are probably not needed for locating contaminant
sources.
At the conclusion of sampling, remove the Vapor Pins® and fill the holes with hydraulic cement
or caulk. Urethane and polyurethane caulks are recommended by radon mitigation guidance for
filling holes and cracks, but they contain VOCs that could interfere with subsequent sampling.
Hydraulic cement does not contain VOCs, but it sets up quickly, making it potentially difficult to
fill borings to total depth.
After removing the silicone sleeve and other plastic parts from the Vapor Pins®, decontaminated
them for reuse. Cox -Colvin has a number of Vapor Pins® that they have used an average of
seven or eight times with no breakage or damage.
K:\CCA\BD\Vapor Pin\Procedures\Using Vapor Pins for Source Characterization.docx
Vapor Pin Enterprises, Inc.

® Standard Operating Procedure
VaporP i Use of the VAPOR PIN® Drilling
Elowns_ Guide and Secure Cover
INNUM5 Updated March 16, 2018
Scope:
This standard operating procedure (SOP)
describes the methodology to use the VAPOR
PIN® Drilling Guide and Secure Cover to
install and secure a VAPOR PIN® in a flush
mount configuration.
Purpose:
The purpose of this SOP is to detail the
methodology for installing a VAPOR PIN®
and Secure Cover in a flush mount
configuration. The flush mount
configuration reduces the risk of damage to
the VAPOR PIN® by foot and vehicular traffic,
keeps dust and debris from falling into the
flush mount hole, and reduces the
opportunity for tampering. This SOP is an
optional process performed in conjunction
with the SOP entitled "Installation and
Extraction of the VAPOR PIN®". However,
portions of this SOP should be performed
prior to installing the VAPOR PIN®.
Equipment Needed:
• VAPOR PIN® Secure Cover (Figure 1);
0 VAPOR PIN® Drilling Guide (Figure 2);
0 Hammer drill;
• 11/2-inch diameter hammer bit (Hilti' TE-
YX 11/2" x 23" #00293032 or equivalent);
• 5/8-inch diameter hammer bit (HiltiT" TE-
YX 5/8" x 22" #00226514 or equivalent);
• assembled VAPOR PIN®;
• # 14 spanner wrench;
• Wet/Dry vacuum with HEPA filter
(optional); and
• personal protective equipment (PPE).
Figure 1. VAPOR PIN® Secure Cover
Figure 2. VAPOR PIN® Drilling Guide
Installation Procedure:
1) Check for buried obstacles (pipes,
electrical lines, etc.) prior to proceeding.
2) Set up wet/dry vacuum to collect drill
cuttings.
3) While wearing PPE, drill a 1 1/2-inch
diameter hole into the concrete slab to a
depth of approximately 1 3/4 inches.
Pre -marking the desired depth on the drill
VAPOR PIN' protected under US Patent # 8,220,347 B2, US 9,291,531 B2 and other patents pending
Vapor Pin Enterprises, Inc. • 7750 Corporate Blvd., Plain City, Ohio 43064 • [phone] • www.vaporpin.com

bit with tape will assist in this process.
4) Remove cuttings from the hole and place
the Drilling Guide in the hole with the
conical end down (Figure 3). The hole is
sufficiently deep if the flange of the
Drilling Guide lies flush with the surface
of the slab. Deepen the hole as
necessary, but avoid drilling more than 2
inches into the slab, as the threads on the
Secure Cover may not engage properly
with the threads on the VAPOR PIN®.
Figure 3. Testing Depth with the Drilling
Guide
5) When the 11/2-inch diameter hole is
drilled to the proper depth, replace the
drill bit with a 5/8-inch diameter bit,
insert the bit through the Drilling Guide
(Figure 4), and drill through the slab. The
Drilling Guide will help to center the hole
for the VAPOR PIN®, and keep the hole
perpendicular to the slab.
6) Remove the bit and drilling guide, clean
the hole, and install the VAPOR PIN® in
accordance with the SOP "Installation and
Extraction of the VAPOR PIN®.
Standard Operating Procedure
Installation and Removal of the Vapor Pin®
Updated March 16, 2018
Pacre 2
Figure 4. Using the Drilling Guide
7) Screw the Secure Cover onto the VAPOR
PIN® and tighten using a # 14 spanner
wrench by rotating it clockwise (Figure 5).
Rotate the cover counter clockwise to
remove it for subsequent access.
Figure 5. Tightening the Secured Cover
1 imitation -,-
On slabs less than 3 inches thick, it may be
difficult to obtain a good seal in a flush
mount configuration with the VAPOR PIN.®
VAPOR PIN' protected under US Patent # 8,220,347 132, US 9,291,531 B2 and other patents pending
Vapor Pin Enterprises, Inc. • 7750 Corporate Blvd., Plain City, Ohio 43064 • [phone] • VaporPin.CoxColvin.com

VaporPMINOMM-_
INNUM��
Scope:
The operating procedure describes
methodology to test a VAPOR PIN®
equivalent sub -slab sampling device
leakage of indoor air.
Purpose:
Standard Operating Procedure
Leak Testing the VAPOR PIN®
Via Water Dam
Updated March 16, 2018
vacuum is recommended. Any remaining
dust can be picked up with a piece of
the scrap Play -Doh or modeling clay.
or
for 3)
The purpose of this procedure is to assess the
potential for indoor air to leak past the
VAPOR PIN ® and dilute the sub -slab soil gas
sample. 4)
Equipment Needed:
• VAPOR PIN® water dam
• Play -Doh or VOC free modeling clay
• distilled water 5)
• VAPOR PIN® and associated sample
tubing.
Procedure:
1) Drill a 5/8" diameter hole in the concrete
slab and install the VAPOR PIN® as per
the Standard Operating Procedure (SOP). 6)
2) Clean the slab within
the VAPOR PIN® to
wetting the concrete
concrete is dry befc
avoid cleaning wil
substances. A whisl
a 2-inch radius of
move dust. Avoid
or wait until the
e proceeding and
VOC-containing
broom or shop
Roll a 1-inch diameter ball of Play -Doh or
modeling clay between your palms to
form a "snake" approximately 7 inches
long and press it against the end of the
pipe couple. Push the couple against the
slab to form a seal between the pipe and
the concrete.
Attach the sample tubing to the top of
the VAPOR PIN® and pour enough
distilled water into the pipe couple to
immerse base of the VAPOR PIN®, and if
desired, the tubing connection at the top
of the VAPOR PIN®.
Purge the sample point as required by the
data quality objectives. Concrete will
absorb some of the water, which is
normal; however, if water is lost to the
sub -slab, stop, remove the water from the
couple, and reposition the VAPOR PIN® to
stop the leakage. Reseat the leak test
equipment, if needed.
If the VAPOR PIN® is installed in the
flush -mount configuration, the larger
hole can be filled with water in place of
the plastic pipe fitting and Play -Doh or
modeling clay.
VAPOR PIN't protected under US Patent # 8,220,347 B2
Vapor Pin Enterprises, Inc. • 7750 Corporate Blvd., Plain City, Ohio 43064 • [phone] • www.vaporpin.com

aceAnalytical
Pace Analytical Services, LLC
Method Detection Limits and Reporting Limits
by EPA TO15 SIM Scan
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
0.00448
0.01
133.4047
0.0248
0.0555
56
133
25
1,1,2,2-Tetrachloroethane
79-34-5
0.00552
0.01
167.8498
0.0385
0.0698
57
146
25
1,1,2-Trichloroethane
79-00-5
0.00482
0.01
133.4047
0.0267
0.0555
54
146
25
1,1,2-Trichlorotrifluoroethane
76-13-1
0.0724
0.2
187.3762
0.564
1.56
63
139
25
1,1-Dichloroethane
75-34-3
0.00362
0.01
98.9596
0.0149
0.0411
63
130
25
1,1-Dichloroethene
75-35-4
0.00500
0.01
96.9438
0.0202
0.0403
59
138
25
1,2,4-Trichlorobenzene
120-82-1
0.493
1
181.4487
3.72
7.54
60
133
25
1,2,4-Trimeth (benzene
95-63-6
0.0904
0.2
120.1938
0.452
1.00
70
137
25
1,2-Dibromoethane
106-93-4
0.00483
0.01
187.8616
0.0377
0.0781
55
148
25
1,2-Dichlorobenzene
95-50-1
0.0814
0.2
147.0036
0.498
1.22
70
137
25
1,2-Dichloroethane
107-06-2
0.00732
0.01
98.9596
0.0301
0.0411
61
130
25
1,2-Dichloropropane
78-87-5
0.00262
0.01
112.9864
0.0123
0.0470
60
140
25
1,3,5-Trimethylbenzene
108-67-8
0.0798
0.2
120.1938
0.399
1.00
70
133
25
1,3-Butadiene
106-99-0
0.00956
0.01
54.0914
0.0215
0.0225
65
138
25
1,3-Dichlorobenzene
541-73-1
0.0951
0.2
147.0036
0.581
1.22
70
137
25
1,4-Dichlorobenzene
106-46-7
0.164
0.5
147.0036
1.00
3.06
70
134
25
2-Butanone (MEK)
78-93-3
0.123
1
72.1057
0.369
3.00
65
143
25
2-Hexanone
591-78-6
0.179
1
100.1589
0.745
4.16
60
148
25
2-Propanol
67-63-0
0.279
1
60.1
0.697
2.50
65
135
25
4-Ethyltoluene
622-96-8
0.114
0.5
120.1938
0.570
2.50
70
132
25
4-Methyl-2-pentanone (MIBK)
108-10-1
0.124
1
100.1602
0.518
4.16
70
135
25
Acetone
67-64-1
0.499
1
58.0798
1.21
2.41
59
132
25
Benzene
71-43-2
0.00496
0.01
78.1134
0.0161
0.0325
59
133
25
Benzyl Chloride
100-44-7
0.228
0.5
126.58
1.20
2.63
56
150
25
Bromodichloromethane
75-27-4
0.00412
0.01
163.8289
0.0281
0.0681
60
133
25
Bromoform
75-25-2
0.135
0.5
252.7309
1.42
5.25
69
150
25
Bromomethane
74-83-9
0.0575
0.2
94.9387
0.227
0.789
61
141
25
Carbon Disulfide
75-15-0
0.0692
0.2
76.131
0.219
0.633
66
134
25
Carbon tetrachloride
56-23-5
0.00515
0.01
153.823
0.0329
0.0639
56
138
25
Chlorobenzene
108-90-7
0.0588
0.2
112.5585
0.275
0.936
70
130
25
Chloroethane
75-00-3
0.0969
0.2
64.5145
0.260
0.536
65
143
25
Pace Analytical Services, LLC 612-607-1700
KL 8/2/18 1700 Elm Street SE, Suite 200 Minneapolis, MN 55414 www.pacelabs.com

aceAnalytical
Pace Analytical Services, LLC
Method Detection Limits and Reporting Limits
by EPA TO15 SIM Scan
LCS DUP
Analyte
CAS #
MDL (ppbv)
PRL (ppbv)
MW
MDL (Ug/m3)
PRL (Ug/m3)
Lower
Upper
RPD
Chloroform
67-66-3
0.00426
0.01
119.3779
0.0211
0.0496
66
130
25
Chloromethane
74-87-3
0.0742
0.2
50.4877
0.156
0.420
58
140
25
cis-1,2-Dichloroethene
156-59-2
0.00348
0.01
96.9438
0.0140
0.0403
65
130
25
cis-1,3-Dichloropropene
10061-01-5
0.00588
0.01
110.9706
0.0271
0.0461
40
150
25
Cyclohexane
110-82-7
0.101
0.5
84.1608
0.353
1.75
70
133
25
Dibromochloromethane
124-48-1
0.0830
0.2
208.2799
0.719
1.73
46
145
25
DichlorodifIuoromethane
75-71-8
0.0584
0.2
120.9138
0.293
1.01
69
130
25
Dichlorotetrafluoroethane
76-14-2
0.0615
0.2
170.9216
0.437
1.42
68
130
25
Ethanol
64-17-5
0.424
1
46.07
0.812
1.92
65
146
25
Ethyl Acetate
141-78-6
0.0518
0.2
88.106
0.190
0.733
68
136
25
Ethyl Benzene
100-41-4
0.0690
0.2
106.167
0.305
0.883
70
133
25
Hexachlorobutadiene
87-68-3
0.181
0.5
260.762
1.97
5.42
59
140
25
m&p-Xylene
106-42-3
0.158
0.4
106.167
0.699
1.77
70
133
25
Methyl Tert Butyl Ether
1634-04-4
0.181
1
88.1492
0.663
3.66
70
132
25
Methylene chloride
75-0902
0.267
1
84.9328
0.944
3.53
67
132
25
Naphthalene
91-20-3
0.248
0.5
128.1732
1.32
2.66
55
136
25
n-Heptane
142-82-5
0.0913
0.2
100.2034
0.380
0.833
64
136
25
n-Hexane
110-54-3
0.0867
0.2
86.1766
0.311
0.716
70
130
25
o-Xylene
95-47-6
0.0780
0.2
106.167
0.344
0.883
70
132
25
Propylene
115-07-1
0.0816
0.2
42.0804
0.143
0.350
37
150
25
Styrene
100-42-5
0.0794
0.2
104.1512
0.344
0.866
70
139
25
Tetrachloroethene
127-18-4
0.00440
0.01
165.834
0.0303
0.0689
142
25
Tetrahydrofuran
109-99-9
0.0870
0.2
72.1066
0.261
0.600
62
141
25
Toluene
108-88-3
0.0916
0.2
92.1402
0.351
0.766
70
130
25
trans-1,2-dichloroethene
156-60-5
0.00520
0.01
96.9438
0.0210
0.0403
67
131
25
trans-1,3-Dichloropropene
10061-02-6
0.00610
0.01
110.9706
0.0281
0.0461
34
150
25
Trichloroethene
79-01-6
0.00563
0.01
131.3889
0.0308
0.0546
58
141
25
Trichlorofluoromethane
75-69-4
0.0641
0.2
137.3684
0.366
1.14
59
140
25
Vinyl Acetate
108-05-4
0.0754
0.2
86.0902
0.270
0.716
57
150
25
Vinyl chloride
75-01-4
0.00985
0.01
62.4987
0.0256
0.0260
61
136
25
SIM analytes on 10AIR7 only.
Pace Analytical Services, LLC 612-607-1700
KL 8/2/18 1700 Elm Street SE, Suite 200 Minneapolis, MN 55414 www.pacelabs.com

ace Analytical
Pace Analytical Services, LLC
Method Detection Limits and Reporting Limits
by EPA T015 SIM Scan
EXTRA ANALYTES (available upon request at an additional cost)
LCS I DUP
Analyte
CAS #
MDL (ppbv)
PRL (ppbv)
MW
MDL (ug/m3)
PRL (ug/m3)
Lower
Upper
RPD
1,2,3-Trimethyl benzene
526-73-8
0.0807
0.2
120.19
0.403
1.00
69
150
25
1,4-Dioxane
123-91-1
0.205
1
88.1051
0.751
3.66
70
145
25
2,2,4-Trimethylpentane
540-84-1
0.145
0.5
114.22
0.689
2.37
70
140
25
Acrolein
107-02-8
0.237
0.5
56.06
0.553
1.17
65
150
25
Acrylonitrile
107-13-1
0.145
0.5
53.06
0.320
1.10
64
142
25
Allyl Chloride
107-05-1
0.234
0.5
76.525
0.744
1.59
60
147
25
Chlorodifluoromethane
75-45-6
0.184
0.5
86.47
0.662
1.80
68
142
25
Di -isopropyl Ether
108-20-3
0.0795
1
102.1748
0.338
4.25
70
136
25
Ethyl Tert-Butyl Ether
637-92-3
0.175
1
102.1748
0.741
4.25
70
136
25
Isopentane
78-78-4
0.0997
0.5
72.15
0.299
1.50
44
150
25
Isopropyl benzene
98-82-8
0.0762
0.5
120.194
0.381
2.50
70
133
25
Methyl Methacrylate
80-62-6
0.0951
0.2
100.12
0.396
0.832
47
150
25
Methylcyclohexane
108-87-2
0.0950
0.5
98.186
0.388
2.04
70
137
25
N-Butylbenzene
104-51-8
0.201
0.5
134.2206
1.12
2.79
70
148
25
N-Propylbenzene
103-65-1
0.0805
0.5
120.1938
0.402
2.50
70
145
25
p-Isopropyltoluene
99-87-6
0.0922
0.2
134.22
0.515
1.12
70
143
25
Sec- Butylbenzene
135-98-8
0.155
0.5
134.2206
0.866
2.79
70
142
25
Tert Amyl Methyl Ether
994-05-8
0.243
1
102.1748
1.03
4.25
70
135
25
Tert Butyl Alcohol (TBA)
75-65-0
0.326
1
74.12
1.00
3.08
63
143
25
Tert-Butyl Benzene
98-06-6
0.0959
0.2
134.22
0.535
1.12
70
142
25
Vinyl Bromide
593-60-2
0.0810
0.2
106.95
0.360
0.889
70
140
25
THC as Gas (C4-C12)
11.95
23.90
51.9
104
59
150
25
Xylene (Total)
1330-20-7
0.1583
0.6
106.17
0.699
2.65
70
138
25
Surrogates
1,4-Dichlorobenzene-d4 (S)
3855-82-1
30
150
Hexane-d14 (S)
21666-38-6
30
150
Toluene-d8 (S)
2037-26-5
30
150
Highlighted cells are calculated results
Pace Analytical Services, LLC 612-607-1700
KL 8/2/18 1700 Elm Street SE, Suite 200 Minneapolis, MN 55414 www.pacelabs.com

aceAnalytical
AIR CANISTERS
Instructions for canister Grab Sampling
(Tools needed: one ended 9/16" wrench)
1. INSPECTION — Inspect your canister shipment upon
arrival. Compare the contents with the packing slip
and notify Pace Analytical of any discrepancy or dam-
age. Familiarize yourself with the contents you received
by comparing them to the pictures on the right. Do not
open the valve until you are ready to sample. Even a
small loss of vacuum will compromise your sample.
2. CONNECTION — Remove the brass cap from the top
of the can with a 9/16" wrench. If you are connecting to
a predetermined sampling point you may have received
the following: 6 inches of '/4 inch OD Teflon tubing, '/4
inch Swagelock® nut, ferrule, spacer nut and moisture
filter (if requested). Connect these items in series us-
ing the pictures on the right as a guide. The spacer fits
between the nut and the ferrule. The ferrule must be
pointed down toward the canister. Please note the con-
nection to the canisters utilizes Swagelock® threading.
For a proper connection, it's important that no cross -
threading occurs. The canister connection is made by
hand -tightening the Swagelock@ nut. Once connected,
use an open ended (9/16") wrench to further tighten the
connection. Make sure that the connection is firmly tight-
ened. The final connection must be leak tight recognizing
also that over -tightening can cause leaks as well. Do
not use pliers or adjustable -end wrenches to tighten this
Swagelock® connection. Use only open ended wrench-
es for tightening. The canister is now ready for sampling.
3. SAMPLING — To begin sampling simply open the
canister valve (you may have either a rotary valve or
a toggle valve). One full turn counter clockwise for the
rotary valve is sufficient. The toggle valve will open
by flipping upward. During the initial sampling pro-
cess you will hear a rush of air. Without a flow restric-
tion the canister will fill in approximately 30-45 seconds.
4. COMPLETION — After sampling is complete, close
the canister valve. Disassemble the components and
return them in the original shipping package they were
received in. Verify the contents for return to the labo-
ratory. Complete the Chain -of -Custody form and re-
turn with the samples to the laboratory. Be sure to
reference the canister ID on the Chain -of -Custody.
Grab Sample Configuration
'++ — Moisture Filter
1/4" OD Teflon Tubing
1/4" Swagelock®
Nut
,w Spacer nut
Fe'r. ale
Canister lnlef
Canister 1D —
;.Rotary Valve
-z�jjl!�.F
1 d
1
i H
F
¢
E
---3 Sampl&ll) Tag
I tM
MK
www.pacelabs.com
©2009 Pace Analytical Services Air Lab 1700 Elm Street, Minneapolis MN 55414
Questions? Please call the Air Technical phone number 612-607-6386

...rim
--/I1•k;g111c7,rnu.,rir.'I'IakigluS,d„fio„v SamplingInstructions
Restricted flow Sampler
Intended Applications:
30 minute sampling of 6 Liter Canister 5 minute sampling of 1 Liter Canister
All media is pre -assembled for your convenience
Do not attempt to remove the gauge from the canister
Inspect your media
• Remove the protective foam inserts and other packing material from
the box. Set these inserts aside for return shipment
• Lift and carry the canister by the frame ring near the top.
• Review the contents of the package to ensure you have everything you need
prior to sampling.
• Consult your Pace Project Manager, or call the Air Technical Hotline @
612-607-6386 if you have any questions.
Prepare for Sampling (Figure 1)
• Before sampling, you will first verify the initial vacuum.
• With the brass cap on the assembly still in place, open the canister to check
the initial vacuum.
o Rotary Valve requires on full turn counter clockwise
o Toggle Valve requires that you flip the valve upwards
• Record initial vacuum_ on the Chain of Custody
o Initial field reading (-inches of Fig)
• Close the canister valve before moving on to next step.
Collect Samples (Figure 2)
• Remove the brass cap from the side of the sampling assembly by turning
counter clockwise with a 9/16 inch wrench. (Figure 2)
• Position the canister for sampling
o NOTE: If tubing and fittings are required at this site, you will find
these items and all instructions in the enclosed plastic bag.
• Connect the sampling line as shown in the picture on the right. Open the
canister valve to begin sampling
• The Decline in vacuum should be proportional to the'collection time. After
desired sampling time, close canister valve.
o NOTE: The canister will continue to fill until the internal: pressure
reaches ambient conditions ftsig). You are responsible for
closing the valve on the canister at the desired time.
• To end the sampling process close the valve on the canister and replace
brass cap to the side of the gauge.
• Verify final field vacuum by opening the canister.
o Record the —inches of Hg on the COC.
o Close canister valve
Return Samples
• Repackage the canister with the protective foam insert, and other packaging
materials, to insure the integrity of your sample as it travels back to the lab.
• Complete the shipping and COC documents
• Return to Pace Analytical for analysis.
• Return all components in the package as you received them. Complete a
Chain of Custody record and return with the sample to Pace Analytical for
analysis.
Figure 1
Verify the initial vacuum.
Sample Connection
Point
Figure 2
Remove the brass cap and connect the
sampling line
www.pacelabs.com

®®� ® � ® !-
o ® ow ® o
Analytical = =_ = : =_
-- — — — — --
_®
-- —law
aw �® --
Sampling Instructions for t-CANS
Preassembled Air Canisters
UnpaCK EZ-CANS
1. Remove the protective EZ-CANS foam insert from the box
and retain it for return shipping.
2. To remove from the box, lift and carry EZ-CANS by the
frame ring near the top of the canister. Avoid lifting by the
flow controller or any part of the sampling assembly.
3. EZ-CANS are completely preassembled, leak -checked
t�
and ready to go.
Prepare to Sample
1. Review the contents of the package to insure you have
everything you need.
2. Remove the brass cap from the top of the sampling
assembly by turning counter clockwise. It should be
finger tight, if necessary use a 9/16" wrench.
3. Position the EZ-CANS for sampling. NOTE: If tubing and
fittings are needed to sample subsurface or a hard to
reach area, you will find these items and instructions in an
enclosed plastic bag.
Begin Sampling
1. Open the canister valve to begin sampling. Pace uses two
valve styles:
a. Rotary: One full turn counter clockwise
b. Toggle: Flip the valve upward
2. The decline in vac;uulii should be directly proportional to
the collection time.
3. Record initial vacuum on the Chain Of Custody.
"Initial Field reading (-inches of Hg)
End Sampling
1. Close the canister valve and record the vacuum gauge
reading on the Chain of Custody. Final Field reading
(-inches of Hg)
2. Reattach the brass cap to the top of the sampling
assembly.
3. Repack the canister using the protective foam insert to
insure the integrity of your sample.
4. Complete the shipping and COC documents and call the
carrier for pickup.
Questions? Call 612-601-6386
%J
Brass Cap
www. pacelabs. com
@2010 Pace Analytical Services Air Lab
Return to Pace Analytical @ 1700 Elm Street, Minneapolis MN 55414
Questions? Please call the Air Technical phone number 612-607-6386

Attachment E

Pyramid Environmental & Engineering, P.C. Project #2021-132
Model Linen — W. Lewis Street
SUB -SLAB VAPOR (SSV) ASSESSMENT WORK PLAN
MODEL LINEN & WEST LEWIS STREET BROWNFIELDS PROJECTS
109, 111, 117-131, & 120 W. LEWIS STREET
GREENSBORO, NC (GUILFORD COUNTY)
Brownfields Site Name : # 17046-13-041 : West Lewis Street BFA
Brownfields Site Name: # 08007-04-041 : Model Linen BFA
Work Plan Prepared for: AZ Development, LLC
Andy Zimmerman
111 W. Lewis Street, Greensboro, NC 27401
Email : [e-mail]
Phone : [phone]
PVRAM 1 a
ENVIRONMENTAL & ENGINEERING, P.C.
Work Plan Version : Version 2.3
Date Prepared : 10-27-2021
Work Plan Submitted to : BP Project Manager : Ms. Sharon Poissant Eckard, PG
NCDEQ— DWM - Brownfields Program
1646 Mail Service Center, Raleigh, NC 27699-1646
Email: [e-mail]
Phone : [phone]
Work Plan Prepared By:
Michael G. Jones, PG
License #1168
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
Model Linen & West Lewis St. NCBP Sites - Brownfields Soil -Gas Work Plan (Version 2.3) Page 1
Pyramid Environmental & Engineering, PC-2021-132 10-27-2021

Table of Contents
1.0 Introduction
1
1.1 NCDEQ Requested Work 3
1.2 Brownfields Receptor Survey 6
1.3 Soil Assessment 6
1.4 Groundwater Assessment 6
1.5 Sub -Slab Vapor Sampling 6
1.6 Data
7
2.0 Scope of Work 8
3.0 Sampling Methodology 9
3.1 SSV Sampling Methodology 10
3.2 Indoor Air Sampling Methodology 11
3.3 Crawlspace Sampling Methodology 12
4.0 Laboratory Analyses 12
5.0 Quality Assurance / Quality Control Procedures 13
6.0 Investigation Derived Waste 14
7.0 Reporting 14
8.0 Work Plan Closing 15
Figure 1 - Topographic Map
Figure 2 - Property Location Aerial Map
Figure 3 - Site Aerial Showing 2014 Assessment Results
Figure 4 - Estimated Groundwater Flow Direction
Figure 5 - Aerial Map with Proposed Sample Locations
Figure 6 - Locations of SG Samples at 109 — 111 W. Lewis Street
Figure 7 - Locations of SSV Samples at 115 — 117 W. Lewis Street
Figure 8 - Locations of SG Samples at 117 B-1 W. Lewis Street
Figure 9 - Locations of SSV Samples at 120 W. Lewis Street
Table 1 through 4 (in Text)
Attachment A : NCDEQ Brownfields Letter (03-26-2021)
Attachment B : Site History, Phase II ESA, and 2014 Assessment Results
Attachment C : Site Photos, Sanborn Map 1950, map of Foundation Types
Attachment D : Vapor PinTI Product Brochure, Installation instructions, and leak check procedure
Attachment E : TO-15 Method Reporting Limits for Pace Analytical
Attachment F : Pace TO-15 Air Sampling Procedures
Model Linen & West Lewis St. NCBP Sites - Brownfields Soil -Gas Work Plan (Version 2.3) Page 2
Pyramid Environmental & Engineering, PC-2021-132 10-27-2021

1.0 Introduction
On behalf of AZ Development, Pyramid Environmental & Engineering, PC (Pyramid) reviewed the
NCDEQ letter date March 26, 2021, requesting additional assessment at the referenced
Brownfield site addresses. The NCDEQ letter is presented in Attachment A for your reference.
The NC Brownfields Program (NCBP) requested a Work Plan to provide the NCDEQ with details
of the proposed sub -slab vapor (SSV) assessment requested by the Department. The site
assessment history is summarized in this work plan with applicable sampling details for the site.
This SSV Assessment Work Plan is being submitted while efforts are underway to merge the
Brownfield agreements for the following two Brownfields sites :
• # 17046-13-041 : The West Lewis Street BFA is being written to combine the West Lewis
Street site with the Model Linen Brownfields Site.
• # 08007-04-041 : The Model Linen BFA was previously recorded, and review of the
document showed that changes were necessary to the Brownfields Plat.
The combination of the two sites into one Brownfields Agreement (BFA) is proposed. As far as
was reported, there has not been involvement of the DSCA program. The SSV Assessment Work
Plan will address the NC Brownfields Program concerns about possible vapor intrusion from
solvent or volatile organic contamination. The SSV analytical results will provide additional
information for evaluation, will fill a "data gap" , and will allow completion of the BFA. The
Following table presents the Property Information for the two sites.
Table 1— Property Use Summary
NCBP Project #
Address
Parcel #
Acreage
Former Use
REC
Current Use
17046-13-041
109-111 W. Lewis
7864-63-1801
0.24
Furniture Store
PCE & TCE in GW
Pub & Office Spaces
(W. Lewis BF)
115-117 W. Lewis
7864-53-9880
0.48
Dry Cleaners
PCE & TCE in GW
Pub, Brewery, distillery
08007-04-041
120 W. Lewis St.
7864-64-0041
0.50
Former Laundry
PCE & TCE in GW
Arcade, Pub, Storage
(Model Linen)
As requested by the NC Brownfield Program (NCBP), this brief summary of the site history was
completed as part of the SSV Work Plan. Pyramid met with the building owner at the properties
to access each building areas and review what is known about the foundations. The buildings
have differing foundation types that will affect the collection of SSV samples.
Model Linen & West Lewis St. NCBP Sites - Brownfields Soil -Gas Work Plan (Version 2.3) Page 3
Pyramid Environmental & Engineering, PC-2021-132 10-27-2021

1.1 NCDEQ Requested Work
The NC Brownfields Program requested additional sub -slab vapor data for both the Model Linen
and West Lewis Street properties based on the detection of Benzene, Naphthalene, PCE, TCE,
and 1-Methyl naphthalene in groundwater at 120 Lewis Street (MW-3). There was a detection of
Trichloroethylene (TCE) in the groundwater at MW-3 (1.2 µg/L) on the Model Linen site. Based
on these VOC detections, the NCDEQ determined that there was a "data gap" for sub -slab vapor
data. The historical data from one sub -slab sample collected in 2014 in the southeast area of 109
W. Lewis indicated a low concentration of TCE and other volatile organic compounds (VOCs),
including the daughter products of TCE, which were present in the 2014 SSV sample. The VOCs
include chlorinated compounds that are considered contaminants of concern (COCs).
Brownfields requested additional SSV sampling in each of the buildings to assess vapor intrusion
risk. The NCDEQ Brownfields Program letter requesting the work is presented in Attachment A.
The detailed site history prepared in 2014 during a Phase II ESA is included in Attachment B.
At this time, no new structures or foundation changes are planned. The current property uses
include several pubs with food service, a craft brewery, a distillery, offices, storage, and a video
game arcade. The property uses will remain consistent with the current use for the foreseeable
future, and no new construction or residential uses are planned. Planning for the SSV sampling
began with a site visit and interview with the building owner and a few of the current occupants.
The buildings have structural walls separating the building areas, and differing foundation types.
In preparing the SSV and crawlspace sampling work plan, the foundation type and wall
separations were taken into consideration. The owner's information, photographs, and maps
were helpful in understanding the foundations, and are included in Attachment C. The following
Figures are provided as further explanation of the work.
Figure 1 - Topographic Map
Figure 2 - Property Location Aerial Map
Figure 3 - Site Aerial Showing 2014 Assessment Results
Figure 4 - Estimated Groundwater Flow Direction
Figure 5 - Aerial Map with Proposed Sample Locations
Figure 6 - Locations of SG Samples at 109 —111 W. Lewis Street
Figure 7 - Locations of SSV Samples at 115 —117 W. Lewis Street
Figure 8 - Locations of SG Samples at 117 B-1 W. Lewis Street
Figure 9 - Locations of SSV Samples at 120 W. Lewis Street
The following Table 2 describes the sampling strategy for each sample location.
Model Linen & West Lewis St. NCBP Sites - Brownfields Soil -Gas Work Plan (Version 2.3) Page 4
Pyramid Environmental & Engineering, PC-2021-132 10-27-2021

Table 2 - Address - Building Size & Foundation Descriptions
SCOPE of
During review and discussions, the NCDEQ requested more coverage of the buildings 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 S.
The 109 W. Lewis pub is 2,697square 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 was 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-11 and CS-12) as shown on Figure S. The samples will be collected
at least 5 feet from the exterior walls and will be compared with the Indoor Air Quality VISLs.
120 W.
The Boxcar has an event space, 2 bars, and a game room covering 70 % of the area. The building is slab
Lewis Street
on grade with plumbing on the east side. The SSV points (SSV-18 through SSV-23) are shown on Figure 9,
BOXCAR
and cover the Boxcar area of 9,900 square feet with ( 6) SSV samples to evaluate this area.
120 Lewis
This area was not open for our inspection, and will be inspected at the start of work. The owner designated
Street
the area for office use. The area is slab -on grade construction with a NE courtyard. The 4,475 sq. ft. area
has (4) SSV samples (SSV-14 through SSV-16) positioned to evaluate the area. The small "Courtyard"
Offices
area at the NE corner of the property will be investigated with SSV-15 sample under concrete.
The SSV locations are shown on Figure 5 and described on Table 3 below.
Model Linen & West Lewis St. NCBP Sites - Brownfields Soil -Gas Work Plan (Version 2.3) Page 5
Pyramid Environmental & Engineering, PC-2021-132 10-27-2021

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Model Linen & West Lewis St. NCBP Sites - Brownfields Soil -Gas Work Plan (Version 2.3) Page 6
Pyramid Environmental & Engineering, PC-2021-132 10-27-2021

1.2 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 surface water
from the site appears to move to the south and southeast toward a nearby surface water stream.
The closest surface water stream is located about 1,400 feet south of the site, and flows to the
south. Although no receptor survey has been completed for the site, the site is in the center of
Greensboro and no water supply wells are expected in this area. A brownfields Receptor Survey
will be conducted as part of this scope of work. The City of Greensboro supplies municipal water
to the properties within 1,500 feet of the site. There are no known water supply wells located on
the Brownfields properties.
1.3 Soil Assessment
Petroleum USTs were reportedly removed from south of 111 W. Lewis although no exact
location was given. In addition, a petroleum UST was reportedly removed from the southwest
corner of 120 leis street. The 2014 soil assessment summarizing the previous investigations is
presented as Attachment B, and showed that the results were below IHSB PSRG levels. This
Work Plan includes no soil sampling, but rather sampling of SSV to evaluate volatile organic
compounds (VOCs) beneath the buildings.
1.4 Groundwater Assessment Summary
Previous groundwater assessment was reported and identified benzene, naphthalene, PCE, TCE,
and 1-methylnaphthalene above groundwater standards. A typical conceptual site model would
include shallow groundwater between 12 to 16 below land surface (BLS), within the surficial
aquifer. The saprolite generally persists to a depth or approximately 45-55 feet and is followed by
weathered granitic rock. The bedrock in the Greensboro area is generally between 65 and 85 feet
below land surface, depending on differential weathering. The dissolved Constituent of Concern
(COC) are present in the shallow zone. The groundwater potentiometric surface map is presented
as Figure 4, and the Constituents of Concern map is presented as Figure 3. These groundwater
detections prompted the NCDEQ to request the SSV sampling work plan.
1.5 Sub -Slab Vapor Sampling
The former Model Linen operated on both the north and south sides of Lewis Street at 120 Lewis
Street (north side) and 117 Lewis Street (south side). The NC Brownfields Program requested
SSV data for both the Model Linen and West Lewis Street properties. The Program requirements
are based on the detection of TCE in the groundwater at the Model Linen Site and the lack of
Model Linen & West Lewis St. NCBP Sites - Brownfields Soil -Gas Work Plan (Version 2.3) Page 7
Pyramid Environmental & Engineering, PC-2021-132 10-27-2021

sufficient sub -slab vapor assessment data. The historical data from one sub -slab sample collected
in 2014 in the southeast area of 109 W. Lewis Street indicated a low concentration of TCE and
other VOCs, including the daughter products of TCE present in that sample. The NC Brownfields
Program requested additional SSV sampling in each of the buildings to assess vapor intrusion risk.
Future development includes no new builds on the properties, no planned residential use, nor
removal of buildings or foundations; although residential use was requested as a potential future
use in the Brownfields Agreement. Each building is connected to public utilities.
1.6 Data Gaps
The NCDEQ Brownfields Program has identified the lack of SSV data as a data gap and requires
additional SSV assessment data to be collected for the buildings at the site. The following Work
Plan summarizes the methods, procedures, and quality assurance which will be used in the
upcoming SSV assessment. After discussion with the NCDEQ, Pyramid reviewed the preliminary
NCDEQ Brownfields Program Guidance for Vapor Intrusion Assessment Work Plan and Report
Checklist (July 2021) in preparing this document. Although not all of the checklist items apply
to this site, the guidance was adhered to where appropriate.
• The property use has been established and is reported in Table 1.
• 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
• There are no elevators or stairwells in the buildings
• Parking is outside on paved surfaces and along the street
• Building square footage is report on Table 2 and is not changing
• Figure 1 -
Topographic Map
• Figure 2 -
Property Aerial Location Map showing all parcels
• Figure 3 -
Site Aerial Map showing 2014 assessment results
• Figure 4 -
Estimated Groundwater Flow Direction
• Figure 5 -
Aerial Map with Proposed Sample Locations
• Figure 6 -
Locations of SG Samples at 109 —111 W. Lewis Street
• Figure 7 -
Locations of SSV Samples at 115 —117 W. Lewis Street
• Figure 8 -
Locations of SG Samples at 117 B-1 W. Lewis Street
• Figure 9 -
Locations of SSV Samples at 120 W. Lewis Street
The subsurface and crawlspace sampling locations and rationale are described in Table 2 and in
Table 3 of this work plan.
Model Linen & West Lewis St. NCBP Sites - Brownfields Soil -Gas Work Plan (Version 2.3) Page 8
Pyramid Environmental & Engineering, PC-2021-132 10-27-2021

2.0 SCOPE of WORK
The work required by the Brownfields Program is to provide SSV sample collection and analysis
from the structures on the sites. The locations proposed are shown on Figure 5 and Table 3
indicates the planned sampling technique. The primary tool in the sampling is the Vapor Pin TM
which is a stainless steel device which allows penetration of the concrete slab/overlying floor,
and seals to the penetration allowing a vapor sample to be collected from the air -space below
the slab. The air space below the concrete or wooden flooring systems can be accessed in this
way, and the sample locations can be left in place if repeated sampling is desired.
Additional vapor sampling procedures are listed in the following sections for each building
location and the QA/QC details are also summarized in this SSV Work Plan. No sealants or glues
will be applied to the SSV installations or leak check. The materials used will be consistent with
the planned VI sampling and observations of the site conditions at each SSV Installation will be
recorded during installation.
The proposed SSV sample locations are shown on Figure 5. The SSV sampling will be completed
using Vapor PinTm devices in each sample location. The Vapor PinTm description, installation
procedures, and leak check for the device are summarized in Attachment D. The SSV samples
require penetration through the concrete or wood flooring to access the vapor space below.
Table 2 describes the building location, address, foundation type, and Table 3 describes the
sample numbers and strategy for each sample location.
These SG / SSV / Crawlspace sample locations are shown on the site map presented as Figure S.
These samples are to determine whether there are vapor intrusion concerns at the Brownfields
Properties.
SSV sampling will be arranged with the property owner and each tenant after NCDEQ approval
of the work plan. The business operations will make it necessary to schedule the work so that it
does not interfere with normal business. The installation work for the SSV VaporPinsTM is
expected to take two field days, and the installations will be developed, sealed, and covered with
stainless steel covers.
The sample collection will require 25 cylinders from the laboratory which may take time to
acquire. The field collection of air samples will document the conditions at each sample location,
and a duplicate sample will be collected for each field day. The work will be scheduled to be
completed in two field days and Duplicate samples are proposed at location SSV-10 (SSV-10 Dup)
and SSV-23 (SSV-23 Dup). These are the most likely areas for detections of chlorinated solvents
at the two brownfields sites.
Model Linen & West Lewis St. NCBP Sites - Brownfields Soil -Gas Work Plan (Version 2.3) Page 9
Pyramid Environmental & Engineering, PC-2021-132 10-27-2021

3.0 SAMPLING METHODOLOGY
3.1 SSV Sampling Methodology
The SSV sampling will be completed using separate Vapor PinTm devices in each area of the site.
The timing of the SSV Sampling will be scheduled within 2 weeks of SSV Work Plan Approval.
The Vapor PinTm description, general installation procedures, and leak check for the device use
are presented in Attachment D. The proposed assessment activities will be performed in general
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. The Vapor Intrusion Assessment Checklist
will be used in preparation of the final report and is presented in Attachment E.
The SSV samples require penetration through the concrete or wood flooring to access the vapor
space below. Preparation for the VaporPinT"' installations includes:
• Procurement of the Vapor Pins & Installation Kit
• Confirm access to the sample areas with building owner and occupants
• Schedule Vapor PinT"' Installation and purging
• For thick wooden floor install, VaporPinTm agreed the device use was appropriate
• Receive Laboratory canisters, check condition, and Teflon tubing for sampling
Pyramid plans to complete the coring and installation of the seven Vapor PinT"' installations prior
to the final arrangements for SSV sample collection. The procedures for installation are outlined
in detail in Attachment D. Pyramid consulted VaporPinT"° about the use of the device, provided
photos of the flooring , and received and Email confirming the device is appropriate for this use.
Once the SSV sample points are installed, Pyramid will purge the entire sample train (Vapor Pin
and tubing) by extracting 5 volumes from the vapor point using the syringe and three-way valve.
After stabilization, the purge/leak check will be completed prior to sampling. The installation will
be secured with a cap and stainless steel threaded lid fastened to the top and allowed to rest for
20 minutes before sampling. No sealants will be used in the installations. Preparations for the
soil -gas sampling and analyses included the following elements:
• Arrange for volatile organic TO-15 BATCH -certified 6-liter summa canisters
• Helium gas will be used (fully Hooded) for Leak checking of all connections
• Slab / floor thickness will be recorded for each location
Model Linen & West Lewis St. NCBP Sites - Brownfields Soil -Gas Work Plan (Version 2.3) Page 10
Pyramid Environmental & Engineering, PC-2021-132 10-27-2021

• The Buildings have HVAC systems that will be operated normally during sampling.
• Samples will be completed when the buildings are unoccupied or lightly occupied.
• Connecting laboratory prepared cylinders & 200 ml/min flow control device
• Soil -gas sample collection in laboratory prepared vacuum cylinders
• Duplicate soil -gas samples will be collected concurrently with primary samples
• Packaging and FeclEx shipment of air samples in lab packaging to Pace
• Evaluation of laboratory results relative to commercial and residential VISLs
• Reporting of analytical data to the NCDEQ
Prior to sample collection, a leak test will be performed on each SSV/SG point by placing a shroud
around the point and sampling train including the summa cannister, saturating the air inside the
shroud with helium gas, then purging approximately three volumes from the sampling point and
tubing using a syringe and three-way valve. The 6-liter summa canister will be connected to in -
line flow controllers with the laboratory calibrated vacuum gauge. The flow controller will be
connected to the sample tubing at the soil vapor monitoring point using a brass nut and ferrule
to form an air -tight seal.
Vapor from the monitoring point sample tubing will be purged and sampled outside the shroud
into a Tedlar° Bag . A helium gas detector will be used to measure helium concentrations in the
shroud and bag. The leak test will be considered successful if the helium concentration measured
in the soil gas purged from the sampling point is less than 10% of the concentration measured in
the shroud. If the leak test is unsuccessful, measure will be taken to identify and address the
source of the leak and additional leak testing will be performed. In total, a minimum of 5 volumes
will be purged from the point prior to and during the leak test utilizing a syringe and 3-way valve.
After a successful field leak check, the vapor samples will be collected in the laboratory supplied
Summa Canisters. The Summa canisters will be batch certified for quality assurance. The vacuum
will be checked for appropriate negative pressure. If the initial vacuum prior to sampling is in
excess of 10 % lower than the vacuum recorded at sample receiving, the canister will not be used,
and a replacement will be obtained. For the 6-liter canisters, the flow regulatory will be set at
200 milliliters per minute (ml/min).
For this site, the Duplicate (SSV-2 Dup) will be collected concurrently with the primary sample
using a "Tee" connection within the helium hooded area. 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
Model Linen & West Lewis St. NCBP Sites - Brownfields Soil -Gas Work Plan (Version 2.3) Page 11
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recorded. A vacuum of between -5 and -8 inches of vacuum will be maintained at the end of the
sample collection.
After the 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 (COC)
form and submitted to the laboratory with the canisters. The canisters will be shipped in the lab
provided shipping containers under standards COC protocols to Pace Analytical Services. The
sample location will be secured and maintained in working order until the analytical results are
received, and a decision is made about additional sampling or indoor air analyses. After
evaluation, a decision will be made to remove or leave the vapor sampling point in the future.
3.2 Indoor Air Sampling Methodology
The initial sampling plans do not include any indoor air sampling locations. The crawl space
samples will be considered indoor air samples for comparison with the appropriate VISLs. It is
possible that indoor air samples will be necessary in the future. This work plan lists the additional
details that may be needed in the future should indoor air sample be needed.
• An inventory of chemicals within each building will be conducted if indoor air quality
samples are to be collected. The NCDEQ Indoor Air Building Survey and Sampling Form
will be completed should IAQ samples be collected.
• If compounds that are perceived to be potential interference compounds are found in
the building survey, these compounds will be removed at least 48-72 hours before the
sampling is completed.
• 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.
• Samples will be collected with individually certified 6-liter Summa Cannisters equipped
with 200-ml/minute flow controller devices.
• The air intake will be elevated on a stand and the intake will be at breathing height ,
about 5 feet above the floor.
• All IAQ Samples will be collected on the ground floor in the work or public areas of the
buildings.
• The work will be scheduled with the building owners to limit the access of other people
to the work areas while sampling.
Since no IAQ samples are indicated, these sampling methods are proposed for future use.
Model Linen & West Lewis St. NCBP Sites - Brownfields Soil -Gas Work Plan (Version 2.3) Page 12
Pyramid Environmental & Engineering, PC-2021-132 10-27-2021

3.3 Crawlspace Sampling Methodology
This sampling work plan includes crawl space sample locations designated CS-12 and CS-13. The
Samples CS-1 through CS-6 will be collected below a substantial wooden floor, and are
considered crawl space samples. Sampling procedures will include :
• Looking for a moisture barrier. None was observed during the site visit
• The ceiling of the crawl space is wooden joists and a wooden floor below a Bar
• There appeared to be 2 vents and a small access door on the western wall
• Crawl space height varying from 30 inches to less than 10 inches for CS-12 and CS-13.
• There is a perimeter concrete wall and foundation piers in the crawl space area
• The floor is dirt and gravel
• For CS-1 through CS-6, the thick wooden floor will be penetrated with VaporPins'
The timing of the SSV and crawl space sampling will be scheduled to begin within 2 weeks of SSV
Work Plan Approval.
4.0 Laboratory Analyses
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
compounds (excluding Acrolein) and including naphthalene reported for the initial analyses.
Pyramid reviewed the method Reporting Limits (RLs) and method detection limits (MDLs) for TO-
15 for the target paramete rs/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
regulatory residential VISL levels. The analytical method TO-15 RLs for the method are presented
in Attachment F.
Pace Analytical Services will prepare the sample containers and certify the evacuated cylinders
with flow control devices installed limiting flow to 200 ml/min. 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 sampling and collecting data at the site
are qualified by education, training, and experience. The sample start and end time will be
recorded on the Chain -of -Custody for the site. The starting and ending vacuum in each canister
will be recorded on the chain -of -custody and submitted to the laboratory along with the samples.
Model Linen & West Lewis St. NCBP Sites - Brownfields Soil -Gas Work Plan (Version 2.3) Page 13
Pyramid Environmental & Engineering, PC-2021-132 10-27-2021

5.0 Quality Assurance / Quality Control Procedures
Pyramid plans to collect 23 primary vapor samples and two duplicate SSV/crawl space samples.
The primary and duplicate samples (SSV-10 & SSV-10 Dup) and (SSV-23 and SSV-23 Dup) will be
collected using a brass "Tee" connection between the two samples. These two samples will be
collected concurrently, and the analyses used for comparative purposes. 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. Laboratory
reporting limits for each analyte will be at or below appropriate screening criteria, where
possible.
The Summa canisters 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 SSV 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.
Laboratory QA data consistent with Level II documentation will be requested for this project.
Pace Analytical Services was selected for the Lewis Street/Model Linen Site and the laboratory
contact is Ryan Brumfield [phone]. The SSV analytical data will be reviewed and compared
to the Residential and Non -Residential Vapor Intrusion Screening Levels (VISLs) for Sub -Slab and
Model Linen & West Lewis St. NCBP Sites - Brownfields Soil -Gas Work Plan (Version 2.3) Page 14
Pyramid Environmental & Engineering, PC-2021-132 10-27-2021

Exterior Soil Gas Vapor Screening Levels (SGSLs). A final report will be prepared with the data and
submitted to the NC Brownfields Program for review within 30 days of data receipt from the
laboratory.
6.0 Investigation Derived Waste
Based on the prior data, investigation derived waste (IDW) generated during the assessment will
be minimal and should not encounter contaminated materials. If these activities encounter any
contaminated materials, they should be minimal and would be spread near the point of
generation in a thin layer. However, if significant impacts are suspected, the materials will be
containerized in 55-gallon drum and staged on -site pending analytical results of a composite IDW
sample. Based on laboratory analytical results of IDW samples, the drums will be transported off -
Site to a permitted facility for disposal, if needed.
7.0 Reporting
Following completion of the assessment activities and receipt of the analytical data, Pyramid will
prepare a letter report documenting the soil -gas data, and including a description of the sampling
activities, Figures showing sample location, a soil boring log, laboratory data, a discussion of the
data in comparison to regulatory screening levels, and conclusions and recommendations based
on the site history and current SG data. The report will include applicable tables, figures, and
appendices. The leak check data will be included in the Report as a table to confirm the leak
check data :
Sample
Time
Helium - Shroud
(ppm)
Helium — Tedlar
(ppm)
% Helium in
Tedlar
< 10 % helium ?
Initial
5,000 ppm
??
%
Yes / No
Middle
5,000 ppm
??
%
Yes / No
Ending
5,000 ppm
??
%
Yes / No
ppm = parts per million
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 Corporate license information and the individual license information, and
appropriate professional seal. The final 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 for both properties.
Model Linen & West Lewis St. NCBP Sites - Brownfields Soil -Gas Work Plan (Version 2.3) Page 15
Pyramid Environmental & Engineering, PC-2021-132 10-27-2021

8.0 Work Plan Closing
The schedule for the work is outlined in the following table based on Work Plan Approval.
Table 4 — Proposed Schedule
Date
Activity
Description
DEQ Work Plan Approval
Schedule work
Arrange work with property owner, tenants, and legal counsel
Week 2
Install Pins
Procure & Install VaporPins'", schedule sampling, order cylinders
Weeks 3
Collect Samples
Collect primary & duplicate SG/SSV samples & ship to Laboratory
Weeks 4 & 5
Reporting
Prepare sampling report and add SG/SSV data when received
Week 6
Report to DEQ
After Review the report will be sent to NCDEQ / Brownfields
The proposed schedule will be altered if there are delays in receiving the sampling supplies from
Vapor Pin, or if the Laboratory has delays with TO-15 sample cylinders availability. These are
outside our control and will be mitigated by requesting the materials as soon as the work is
approved.
Please review this work plan and send any comments, which will be addressed quickly so that we
can move forward. Please review this work plan and provide your comments or approval to
Pyramid at email : mike@ pyramidenvironmentaLcom. If you have any questions or if you need
additional information, please call me [phone], ext. 124.
Model Linen & West Lewis St. NCBP Sites - Brownfields Soil -Gas Work Plan (Version 2.3) Page 16
Pyramid Environmental & Engineering, PC-2021-132 10-27-2021

Attachment F

Project Name: West Lewis Street Brownfields Site
Project Number : 2021-336
PYRAMID
DWONMEWALA ENGINEERING, P.C. City : Greensboro NC
Project Address : 109, 111, 113, 115, 117, & 120 W. Lewis St.
SSV j SG Fieldwork Record
Weather Expected: Clear and cold am
SAMPLE
IVAME CS -
Category
Descriptions
Descriptions
Address 71 I i I W. Lewis 5t. arth / South Center
'/
SG Location E 55V CS Bus. Operations? ��i 1 I G 4—�Q�
Floor Type Concrete 1 Waode Crawlspace or 55V 000
r
r�� I�I�
Vapor Pin � 55V Install date :tfJ� � Floor Thickness ? 4"
Installation � l
ET__�Locatian on Site Map No Void Space Under Floor
HVAC in this Space ? No Unconditioned Space ? + '
Air Sampling �'Za z ED Cylinder Number : 1
Batch Cer / Individ. Cert. ��Flow Controller - 200 ml/min #
Helium - Fully Hooded Sample Train Purge ( 5 vols) 20 x 60 ML = 1,200 ML
J
EI]ZHQod Helium = > 5,000 ppm 19--tedlar Bag Helium = ppm @J
Radings of Vacuum (Inch es of Hg } over Sample
COLLECTION Time and Vacuum
Starting Time: 7 :
Ca Vacuum / Pre -Sapling :
m_� �
7
5 Mins. / Hg"
25 Mins. Hg" 45 Mins. Hg"
1Q Mins. Hg"
3Q Mins. Hg" 50 Mins. Hg"
O�
15 Mins. _Hg
Mins. Hg" 55 Mins. Hg"
r
20 Mlns. + , S' Hg" 41) Mins. Hg" 60 Mins. Hg"
ErSample End Time ff.,0 Sample Cannister Ending Vacuum Hg"
Pickup 8y PACE Courier
Sample Hg" Vacuum on CaC r Packed in Pace Boxes � —Bete
Shipping 1�' �7
Ea Cylinder inspecte [ OK DamagedED FeclEx Ship: Tracking # Q153 2 T
Pyramid Environmental & Engineering, P.0 503 Industrial Avenue, Greensboro, NC 27405 Phone - (336) 335-3I74
Ref:
1048368?MR2 Date: 0?DGc21
SHIPPING:
0.00
Dap:
AIR Wgi: 40.00 LBS
SPECIAL:
0.00
HANDLING:
0.00
❑V,
0.00 TOTAL
0.00
Svcs:
" 2DAY" Maier 9763 8447 6127
TACK; 9753 8447 8127

l
Project Name: West Lewis Street Brownfields Site
- Project Number.- 2021-336
PYRAMID
ENYR"ENTALB ENGNEEFM, P.C- City : Greensboro, NC
Project Address : 109 11I 113 115 117 & 120 W. Lewis St.
S5V / 5G Fieldwork Record
Weather Expected: Clear and cold am
SAMPLE
NAME CS�Z
Category
Descriptions
Descriptions
Address W . Lewis St. North / South / Center
SG Location S5V / CS I Bus. Operations? V -'f r4 C �'
Floor Type Concrete Wooden ra or SSV aw o 4
Vapor Pin SSV Install Date: Z L 141 2 2 ( �r Floor Thickness? ei'z
Installation I� p
El -'Location on Site Map ? Ye No Er Void Space Under Floor : Jfl�l.&W f Ql1,-
EaHVAC in this Space ? Y s No ED" Unconditioned Space ? NA
Air Sampling ❑ate : 2 r' C) �ylinder Number : �— Q 2- l
Y Batch Cert / Individ. Cert. Flow Controller - 200 ml/min # V" {
Helium - Fully Hooded EY Sample Train Purge { 5 cols) 20 x 60 ML = 1,200 ML
"Y
HeliumPppmram
EYHood
�y�., Tedlar Bag Helium =
( ''
ED Readings of Vacuum ( inches of Hg ) over Sample
COLLECTION Time and Vacuum
v�Wfti Starting Time : 7 _1_w
Cannister Vacuum / Pre-Samplingaaf : G
5 Mins. Hg"
25 Mins. 2a S Hg" 45 Mins. Hgi "
Wf10
e
Mins. )-'5 Hg"30
Mins. Hg" 50 Mins. Hg"1
At15 Mins. f� _ Hg"
35 Mins. Hg" 55 Mins. Hg"
20 Mins, �f Hg"
40 Mins. Hg" 60 Mins. Hg"
FSample End Time � MIMs I +' I Sample Cannister Ending Vacuum �Hg"
r
IaL,cG Pickup 8y PACE Courier
Sample d Hg" Vacuum on CDC Packed in Pace Boxes
Shipping V.
D Cylinder inspected OK0 2aged F-1 Fed Ex Ship : Tracking # 44-7 �3 [ Z-i
►J
s
Pyramid Environmental & Engineering, P.0 ' 503 industrial Avenue, Greensboro, NC 27406 Phone - (336) 335-3I74
` V t, oi Lrq GL,i'Q._ aA[V ► 4l E'�•i t r ► (010 "" ' mvv- _ ,
V

_ Project Name: West Lewis Street Brownfields Site
Project Number : 2021-336
PYRAMID
EXOGNMWAL1kENUNEMWP.C. City: Greensboro NC
Project Address : 109, 111, 111115, 117, & 120 W. Lewis 5t.
SSV / SG Fieldwork Record
Weather Expected: Clear and cold am _ SAMPLE r
NAME
1 3
Category
Descriptions
Descriptions
Address
E3/- i f W. Lewis St. North South Center
5G Location SSV_/ CS
E:Bus. Operations? -
Floor Type Concrete ooden �f rawlspac or SSV
Vapor Pin m/SSV Install Hate : r I J _d. I Floor Thickness ? - ✓ (��iC 'L e 2 "
Installation �
�Lvcation an Site Map ? � No Void Space Linder Floor
VAC in this Space ? 0e, No Lincvnditioned Space ? fVA
Air Sampling Date : i AI( Cylinder
CNu:.::�Batch Ce / Individ. Cert. Q Flow Con min #
Helium - Fully Hooy �� Sample Train Purge ( 5 vols) 20 x 60 ML = 1,200 ML
-i6
Hood Helium = 7-5bdCPppm '] Tedlar bag Helium = �. ppm
ED—
Readings of vacuum ( inches of Hg) over Sample
COLLECTION Time and Vacuum
Starting Time:
1
Ll
Cannister Vacuum / Pre -Sampling : d
�
5 Mins. � Hg"
25 Mins. Hg" 45 Mins. Hg"
10 Mins. 3 Hg"
30 Mins. Hg" 50 Mins. Hg"
15 Mins. �} t' Hg"
35 Mins. Hg" 55 Mins- Hg"
20 Mins. I Hg"
40 Mins. Hg" 60 Mins. Hg"
r/
ED Sample End Time � I I Sample Cannister Ending Vacuum ` ? Hg"
!! 0,.PickupBy PACE Courier
Sample Hg" Vacuum on COC Packed in Pace Boxes ate
Shipping —7
ICylinder inspected OK j Damaged FedEx Ship: Tracking # i
Pyramid Environmental & Engineering, P.C. 503 Industrial Avenue, Greensboro, NC 27446 Phone - (336) 33S-3174

Project Name: West Lewis Street Brownfields Site
PYRAMID Project Number: 2021-336
QlV"MW&AUAGNEERWc.P.C. City: Greensboro, NC
Project Address : 109,111,_ 113, 115, 117, & 120 W. Lewis St.
SSV / SG Fieldwork Record
Weather Expected. Clear and cold am
SAMPLE c
NAME
Category
Descriptions
Descriptions
Address { W. Lewis St. EE-_ North / South Center
5G Location SSV _ � CS Bus. Operations? O
Floor Type Concrete Wood �Crawlpc�,,r 55V Race
1� rf
Vapor Pin 55V Instal! Date: �1� �' Floor Thickness ?�/
Installation Location on on Site Map ? / _Y_ No Void Space Under Floor
HVAC in this Space ? Yew No nconditioned Space ? /VA
Air Sampling ED`I]ate : L Z lI G/Zf1 u Cylinder Number: 3,
Batch Cer Individ. Cert. [�FIow Controller - 200 mllimin # 00
Helium - Fully Hooded �_ Sample Train Purge {5 vo15) 20 x 60 ML = 1,200 Ml`
Hood Helium = .�
� � Tedlar Bag Helium = ppm
���$�pm
1L)
Readings of Vacuum { inches of Hg i over Sample
COLLECTION Time and Vacuum
-
Starting Time : 77- Q 3,
[r
Cannister Vacuum / Pre -Sampling
l�
5 Mins. Hg" -2146 Mins. 10 Hg" 45 Mins. Hg"
fi
10 Mins. 21-� Hg"
30 Mins. Hg" 50 Mins. Hg"
t y
15 Mins. 1� Hg"
35 Mins. Hg" 55 Mins. Hg"
ll__k
20 Mins. T Hg"
Mins. Hg" 60 Mins. Hg"
j ��40
Sample End Time 7 d � I ''1-Sample Cannister Ending Vacuum Hg"
it Pickup By PACE Courier
Packed in Pace Boxes --Date _
Sample Hg" Vacuum on CDC Er
Shipping
Cylinder inspected ki . Damaged FedEx Ship : Tracking #
Pyramid Environmental & Engineering, P.C. 503 Industrial Avenue, Greensboro, NC 2740E Phone - [phone]

Project Name: West Lewis Street Brownfields Site
PYRAMID Project Number : 2021-336
ENVRMMrrlaa13MIM ,P.c. City. Greensboro. NC
Project Address : 109, 111, 113, 115, 117, & 120 W. Lewis St.
SSV / SG Fieldwork Record
Weather Expected. Clear and cold am
SAMPLE �/f
NAME
7,5 '
Category
Descriptions
Descriptions
Address W. Lewis 5t. North / 5out / Center
SG Location 55V V CS r Bus. ? �� 4
1 Operations.
Floor Type 12� Concrete Erawlspac or 55V
Vapor Pin 55V Install Date: Floor Thickness ? J G`� G
Installation
cation on Site Map ? Y8) N0 Void Space Under Floor : I
�HVAC in this Space ? es No Unconditioned Space ?
Air Sampling Date : l /L! Cylinder Number: ?J ✓
tch Ce / Individ. Cert. Flow Controller - 200 ml/min # r
Helium - Fully Hooded ample Train Purge (5 vols) 20 x 60' ML = 1,200 ML
Er Hood Helium = aS,69�pp vvlq El Tedlar Bag Helium = 2�ppm
Lc3 `5-B0
Readings of Vacuum ( inches of Hg ) over Sample
COLLECTION Time and Vacuum
Starting Time :: *` �
Cannister Vacuum / Pre -Sampling : q J
5 Mins, . Hg" rIS Mins. Oif Hg" 45 Mins. Hg"
rJ
10 Mins. y . Hg" v? f 3ff Mins. �� Hg" 50 Mins. Hg"
15 Mins. ` . d Hg"
35 Mins. Hg" 55 Mins. Hg"
20 Mins. L r Hg"
40 Mins. Hg" 60 Mins. Hg"
Sample End Time 7 . 0 0 5ample Cannister Ending Vacuum Hg"
� Pickup By PACE Courier
Sample [a"Hg" Vacuum on COC Packed in Pace Boxes _
Shipping
Cylinder inspected OK Damaged F FedEx Ship : Tracking #
Pyramid Environmental & Engineering, P.C. 503 industrial Avenue, Greensbaro, NC 27406 Phone - [phone]
Ref= 1048369rMR2 Date: 071)ec21 SHIPPING' 0.00
Dep= AIR Wgt: 40.00 LBS SPECIAL: 0.00
HANDLING: 0.00
DV: 0.00 TOTAL 0.00
Sion " 20AY" MvM819763 8447 e1R7
TACK:97636447 8138

Project Name: West Lewis street Brownfields Site
PYRAMID
ENVIRONMENTAL d ENINNEERM. P.G.
Weather Expected: Clear and cold am
Project Number
2021-336
City: Greensboro NC
Project Address : 109, 111, 113, 115 117, & 120 W. Lewis 5t.
SSV / SG Fieldwork Record
SAMPLE r
NAME
Category
Descriptions
Descriptions
Address lit W. Lewis St. Er North South / Center
5G location SSV _ CS Bus. Operations? 0 i P c r
floor Type Concrete Wooden Crawlspace or 5SV
L%t��-- V
Vapor Pin 55V Install Date: �� I Floor Thickness ? �Z "
Installation �
�' Loeation on Site Map ? Yes No Void Space Under Floor:
El VAC in this Space ? GNo unconditioned Space ? ■ " r 1
Air Sampling EY pate : _ 1 ZI (5I z, Z ED' Cylinder Number
t
Batch Ce / Individ. Cert. 12- Flow Controller - 200 ml/min # rN7
Helium - Fully Hooded 51mple Train Purge { 5 vols] 20 x 60 ML= 1,200 MLL_--
-
Hood Helium Tedlar Bag Helium = ppm
vJ0 v
ElfReadings of Vacuum { inches of Hg j over Sample
COLLECTION Time and Vacuum
Starting Time :�
ri
Cannister Vacuum / Pre -Sampling
5 Mins. Hg"
25 Mins. Hg" 45 Mins. Hg "
�}-7-
• 5 Hg
1D Mins. "
L
30 Mins. ` Hg" 50 Mins. Hg"
j--�
15 Mins. 11 .5 Hg"
G
35 Mins. Hg" 55 Mins. Hg"
20 Mins. i Hg"
40 Mins, Hg" 60 Mins. Hg"
F1Sample End Time �G { 1 V F Sample Cannister Ending Vacuum! Hg"
!i Pickup By PACE Courier
Sample � Hg" Vacuum on CDC -7 Packed in Pace Boxes �_
❑❑
Shipping dCylinder inspected OK Damaged 1-1 FedEx Ship :Tracking #
Pyramid Environmental & Engineering, P.C. 503 industrial Avenue, Greensboro, NC 77406 Phone - [phone]

JProject Name: West Lewis Street 6rownfields Site
Project Number : 2021-336
PYRAMID
MIAONMFWALd e4GINEERNG,P.C. City : Greensboro, NC
Project Address: 109 111 113 115 117 & 120 W. Lewis St.
SSV / SG Fieldwork Record
Weather Expected. Clear and cold am
SAMPLE C�
NAME J V
Category
Descriptions
Descriptions
Address FP -1 ` W. Lewis St. O
/ South / Center ET
FT
SG Location 3/�SV " C5 Bus. Operations?
Floor Type Ei Concrete / Wooden Crawlspace or SV
Vapor PinEZ55V Install Date: : � �J 2021f Floor Thickness ?
Installation
EDLocation on Site Map ? Nq Void Space Linder Floor : ►�" dP^
ElHVAC in this Space ? Yes Na Unconditioned Space ? G e4 N •Vd- /t p
Date [. Cylinder Number:
Air SamplingE:f
B ch Cert. / Individ. Cert, Flow Controller - 200 ml/min # 1.14�
6/Helium Fully Honied �!. �o Sample
- Train Purge { 5 volsj 20 x 60 ML = 1,200 ML
Hood Helium = � �Tedlar Bag Helium = _� toPpm
�rw1
Readings of Vacuum ( inches of Hg fever Sample COLLECTION Time and Vacuum
�: � I►
Starting Time: Cannister Vacuum / Pre -Sampling!
5 Mins. He" i. 0 p 25 Mins. Hg" 45 Mins. He"
��6]]
d, 4r 1fl Mins. He" 3.(9 S 30 Mins. - ® Hg" 50 Mins. He
2: 0 15 Mins. �.0 Hg" 3r (� 35 Mins. Hg" 55 Mins. Hg"
20 Mins. Hg40 Mins. He" 60 Mins. Hg"
r
Sample End Time ample Cannister Ending Vacuum Hg"
IP Pickup By PACE Courier
Sample Hg" Vacuum on COC Packed in Pace Boxes
Ef
Shipping
d 4
Cylinder inspected OK Damaged FedEx Ship : Tracking # 4 �] 3 _ 00-1 (] t3{f
Pyramid Environmental & Engineering, P.C. 503 Industrial Avenue, Greensboro, NC 27406 Phone - j336j 335-3174

/�
PYRAMID
IWAONMENTALt MGME PING. P.C.
Weather Expected:
Clear and cold am
Project Name: West Lewis Street Brownfields Site
Project Number : 2021-336
City : Greensboro, NC
Project Address : 109, 111, 113 1.15, 117, & 120 W. Lewis 5t,
SSV / SG Fieldwork Record
SAMPLE l'
NAME
Category
Descriptions
Descriptions
Address W. Lewis 5t. North / South J Center
SG Location d 5sV J C5 d Bus. Operations? "?,s.
t
Floor Type Ca Crete J Wooden Crawlspace or 55V 06n �+���
Vapor Pin 55V install Date: 2- Floor Thickness ? "
Installation - n
Location on Site Map ? Yes No Void Space Under Floor: �� R.^X
Ea' HVAC in this Space ? Yes N❑ Unconditioned Space?
Air Sampling 1z Date: I Z-15 _z + Cylinder Number
Batch Cert. / Individ. Cert. Er Flow Controller - 200 ml/min # C'4S+ZaL 1 -(
Helium - Fully Hooded Ies P �5ampie Train Purge ( 5 volsj 20 x 60 ML = 1,200 ML
I
�]�
dHood Helium = �i Ib ppm dTecllar Bag Helium = 0-0 ppm
Readings of Vacuum I inches of Hg ) over Sample
COLLECTION Time and Vacuum
Starting Time : � _o-7 _ 1�
Can ni5ter Vacuum / Pre -Sampling : �� •�
2,
� �
5 Mins. Hg"
2,,
25 Mins. Hg" 45 Mins. Hg"
`�
10 Mins. Hg"
30 Mins. Hg" 50 Mins. Hg"
15 Mins. 210 Hg"
35 Mins. Hg" 55 Mins. Hg"
20 Mins. [5 Hg"
40 Mins. Hg" 60 Mins, Hg"
Sample End Time _ 5'17 --------- J Sample Cannister Ending Vacuum Hg"
k �
Sample Hg" Vacuum on COC ,v Packed in Pace Boxes
Shipping
Ef Cylinder inspected Qi( Damaged FedEx Ship: Tracking
Pyramid Environmental & Engineering P.C. S03 Industriul Avenue, Greensboro, NC 27406 Phone - (336; 335.3174

Project Name: West Lewis Street Brownfields Site
- Project Number : 2021-336
PYRAMID
DWONMENTAL&ENGNtERNG,PC_ City : Greensboro, NC
Project Address: 104, 111, 113, 115, 117, & 120 W. Lewis St.
SSV / SG Fieldwork Record
Weather Expected:
Clear and cold am
SAMPLE
NAME r M L
Category
Descriptions
Descriptions
Address ❑� III W. Lewis 5t. ID 6;D/ South / Center
SG Location Era/ C5 E ' Bus. Operations?
Floor Type M Concrete / Wooden Crawlspace or 55V
I(
Vapor Pin 55V Install Date: 2a Floor Thickness 7 62
installation
Location on Site Map ? Yes No 12 Void Space Under Floor
NV HVAC in this Space ? Yes No ED' Unconditioned Space ?
JE
Jam' S
Air 5ampling Date : r r 2 } 23 Cylinder Number:
Flow Controller - 200 ml/min #,a`-�
` Batch Cert. / Indivld. Cert. Er
Helium - Fully Hooded ETSampleTrain Purge ( 5 volsj 20 x 60 ML = 1,200 MIL
Hood Helium = > 5,000 ppm �Tedlar Sag Helium = ppm
7i1Q,O40 ppup
—
23 Readings of Vacuum 1 inches of Hg j over Sample
COLLECTION Time and Vacuum
Starting Time : �L
Can nister Vacuum / Pre -Sampling : 3d
5 Mins. aq. 0 He
25 Mins. 2131 He" 45 Mins. �b• � He
10 Mins. 2-7-5 •S Hg"
30 Mins. 2-1 He" 50 Mins. I� Hg"
15 Mins. Hg"
35 Mins. LO Hg" 55 Mins. + He"
+]7—
20 Mins. A-• • Hg"
Mins. 19 Hg" 60 Mins- He
�40
Sample End Time 1 2—' T f V I Sample Cannister Ending Vacuum He
H Pickup By PACE Courier
Sample EfHe" Vacuum on COC +� Packed in Pace Boxes a
Shipping r
Cylinder inspected t OiC Damaged FedEx Ship ; Tracking # _ 7 � 4- � I C
Pyramid Ernvironmental & Engineering, F.C. 5031ndusrrlolAvenue, Greensboro, NC 27405 Phone - f3361335-3174
1z.
-70
70
75: to 7g: '

Project Name: West Lewis Street Brownfields Site
PYRAM 1 D Project Number . 2021-336
rxv�oweexrxa�nswEa+w�,r.c City: Greensboro. NC
Project Address : 109 111 113 115 117 & 120 W. Lewis St.
SSV / SG Fieldwork Record
Weather Expected: Clear and cold am
SAMPLE
NAME
3
Category
Descriptions
Descriptions
Address r7l' << r W. Lewis 5t. ID North / South Center
SG Location
F9 55V " / C5
�r Bus. Operations? ►30-C vL.
Floor Type Concrete Wooden �" Crawlspace or Cr
sl
Vapor Pin 55V Install Date: 6� ED- Floor Thickness ? "
Installation WO
Location on Site Map ? Ye No - Void Space Under Floor:
EfHVAC in this Space ? Yes No Unconditioned Space?
7
'}
Air Sampling dDate : _ CVlinder Number
�_ atch C rt. Individ. Cert. Flow Controller - 200 ml/min # /` 0,1
Helium - Fully Hooded Yz 5J
Sample Train Purge ( 5 volsj 20 x 60 ML = 1,200 MIL
a3'_�'Hoocl Helium = awe ppm Ea"Tedlar Bag Helium = 010 ppm
-,ist000
ETReadings of Vacuum R inches of Hg } over Sample
COLLECTION Time and Vacuum
Starting Time ;_:
t'L
Cannister Vracuum / Pre
-Sampling:
1
_" �
5 Mins. Hg
2,7G5
25 Mins. V •� Hg" 45 Mins. Hg"
10 Mins. . Hg"
30 Mins. �� Hg" 50 Mlns. Hg"
15 Mins. Hg"
35 Mins._ Hg" 55 Mins. Hg"
j.LG-.-
20 Mins. + -1 Hg"�� 40 Mins. Hg" 60 Mins. Hg"
ETSample End Time Z' 4 1 Wk. I " I` Sample Cannister Ending Vacuum 10 Hg"
r � tier
Sample �Hg" Vacuum on COC Packed in Pace Boxes Pick
Shipping "-]
dQCylinder inspected OK } Damaged FedEx Ship : Tracking # _ - -7 s 3 f3 d l� { 0 14
Pyramid Environmental & Engineering P. C 503 Industrial Avenue, Greensboro, NC 274as Phone - (336) 335.32 74
Ref: 10483GB/MR2 Date: 07Dec21 SHIPPING: 0.00
Dep: AIR Wgt; 40.00 LBS SPECIAL! 0.00
HANDLING: 0.00
DV: 0.00 TOTAL' 0.00
Svcs: " 2 DAY " MWe? 9753 8447 8127
IBC II: 9753 8447 8149

Project Name: West Lewis Street Brownfields Site
Project Number: 2021-336
PYRAMID
EWRONMEWk a ENrANU MQ, rc. City : Greensboro, NC
Project Address: 109, 111, 113, 115, 117, &_120 W. Lewis St.
SSV / SG Fieldwork Record
Weather Expected: Clear and cold am
SAMPLE 1AME SS v � ' W 11
Category
Descriptions
Descriptions
Center
Address 71 117 W. Lewis St. Er North Yre
SG Location SSV CS Bus. Operations?r�r
Floor Type Concrete j Wooden Crawlspace or 55
�, �
Vapor Pin SSV Install Date: }� r ,�-.l ZflZ y I Floor Thickness 2 � S "�
Installation ay
Location on Site Map ? No � Void Space Under Floor ��
17 HVAC in this Space ? Yes No Unconditioned Space ? AiT, rJJ On 1
+� 15 az I �`�� 47 W43
Air SamplingDate : Cylinder umber
QBatc�Cert.)/ Individ. Cert. �Flow Controller - 200 ml/min #
ED Helium - Fully Hooded ESample Train Purge 5 volsj 20 x 50 MIL = 1,200 ML
Hood Helium = y$90 ppm IV © Tedlar flag Helium ppm
Readings of Vacuum( inches of Hg ) over Sample
COLLECTION Time and Vacuum q f�
Starting Time
Cannister
- : ��
Vacuum / pre -Sampling
!!!5
fk��H
Mins. �� g" r;y>�1. 25 Mins. �� Hg" 45 Mins.
1JJ""
�•
IO Mins. � k Hg"
-mot r+
30 Mins. 1 I Hg" SO Mins. Hg"
i t'
15 Mins. Hg"
i
35 Mins. Hg" 53 N Mins. Hg"
20 Minr+ s9 Hg"
40 Mins. `J' He 54 Mins. Hg"
7 q �
Sample End Time 1? �� Sample Cannister Ending Vacuum L Hell
Sample Hg" Vacuum on COC ` Er Packed in Pace Boxes
Shipping Q
Cylinder inspected 9Damaged FedEx Ship: Tracking ## G- U -12 0
Pyramid Environmental & Engineering, P. VJ 03 industrial Avenue, Greensboro, NC 27406 Phone - 1336) 335-33 74
V I�-
�,73

z— -- Project Name: West Lewis Street Brownfields Site PYRAMID Project Humber : 2021-336
EHy1iioWE7rosa£NGNEEFM.F.c. City: Greensboro, NC
Project Address : 109 111 113t 115 117 & 120 W. Lewis St.
SSV f SG Fieldwork Record
Weather Expected: Clear and cold am
SAMPLE �� w
NAME J
Category
Descriptions
Descriptions
Address [21 i—r W. Lewis St. Ea North / South / Center
SG Location [a S5V_ CS Bus. Operations PIA 4, h"
Floor Type Concrete / e6d Cr wlspace r SSV ,
E) rti S c i p v 4"
Vapor Pin SSV Install Date Floor Thickness ? "
Installation
Void Space Under Floor:
Location on Site Map ? Yes No Ef
lzrHVAC in this Space ? Yes No Unconditioned Space ?
Air sampling Date : �` l� �� ! Cylinder Number: } 0 1
Batch Cert. j Individ. Cert. Flow Controller - 200 milmin #
Helium - Fully Hooded Nik PaSample Train Purge ( 5 vols) 20 x 60 ML = 1,200 MLd
Hood Helium = > 5,000 ppm N r 15I Tedlar Bag Helium = N A— ppm
Readings of Vacuum ( inches of Hg J over Sample
COLLECTION Time and Vacuum
J
Starting Time : c J pr.,
Cannister Vacuum / Pre -Sampling
5 Mins. �1Y Hg''
25 Mins. 4 + Hg" 45 Mins. Hg"
10 Mins. {zHg"
30 Mins. Hg" 50 Mins. Hg"
15 Mins. U • Hg"
35 Mins, Hg" 55 Mins. HE"
20 Mins. Hg"
40 Mins. Hg" 60 Mins. Hg"
sample End TimeZ4
Sample Cannister Ending Vacuum Er Hg"
—I
c� 1
Packed in Pace Boxes
Sample Hg" Vacuum on COC r l Er
Shipping
Ef Cylinder inspected [ OK Damaged 121 FedEx Ship: Tracking
Pyramid En viranmen tal & Engineering, P.C. 503Industrial Avenue, Greensboro, NC 27406
Ref: 1048368/MR2 Dataz WDaCRI
Dep: AIR Wgt: 40.00 LOS
Dv:
Svcs: *• 21 0 — Matey 9753 0447 8127
1RC X: 9763 8447 8150
Phone - [phone]
SHIPPING: 0.00
SPECIAL: 0.00
HANDLING- 0.00
0,00 TOTAL: 0.00
a

PYRAMID
EWROWENTAi&ENGINEMN. P.G.
Weather Expected. Clear and cold am
Project Name. West Lewis Street Brownfields Site
Project Number : 2021-336
City : Greensboro, NC _
Project Address : 104 111 113 115 117 & 120 W. Lewis St.
SSV / SG Fieldwork Record
SAMPLE
NAME L
Category
Descriptions
Descriptions
Address
W. Lewis 5t. 21 North /P",Center
5G Location Ea
5sV _ / 5 �Bus. Operations
Floor Type
Concrete / oaden awlspac or SSV
Vapor Pin
SSV Install Date: �� JaFloor Thickness ? )V/ "
Installation
ET"l-,cation on Site Map ? qe�
No Void Space Under Floorevi
HVAC in this Space ? Yes aUnconditioned Space ? o I �C
�.J
o v ,-
Air Sampling
Cylinder Number:
Date: _J_ - d I Er
Batch Cert. / Individ. Cert. Flow Controller - 200 ml/min #
Helium - Fully Hooded Sample Train Purge [ 5 vols) 20 x 60 MIL = 1,200 ML/i A —
Hood Helium = > 5,000 ppm NA Tedlar Bag Helium = ppm
❑]
Readings of Vacuum [ inches of Hg j over Sample COLLECTION Time and Vacuum
Starting Time : : bA Cannister Vacuum / Pre -Sampling :
(�
5
Mins. Hg" 6, „� (5 25 Mins. Hg" 45 Mies, Hg"
0 1, 10
Mins Hg" -1, 30 Mins. ) (3 HgQV� 50 +s. Hg'
15
Mins. Hg"35 Mins. Hg" 55 Mins. Hg"
]r 20
Mins. Hg" 40 M!ns. Hg" 60 Mins. Hg"
Sample End Time sample Cannister Ending Vacuum •'
�7m;'s
Sample 1
G varier
Hg" Vacuum on COC Packed in Pace Boxes
Shipping
ff
Cylinder inspected ❑K J Damaged � FedEx Ship : Tracking # fe i'7�3 e A I
Pyramid Environmento! & Engineering, P.C. 503 Indus tried Avenue, Greensboro, NC 27406 Phone- [phone]

Enviro-Equipment Inc.
11180 Downs Road
Pineville, NC 28134
Phone [phone]
Fax [phone] l9
I:311�r1
Pyramid Environmental, Inc.
P.O. Box 16265
Greensboro, NC 27416-0265
Attn: Accounts Payable
Invoice
Date Invoice #
12/2/2021 75721
P.O. No. Terms
Project
2021-336 Net 30
Quantity
Description
Rate
Amount
25
-Way Stopcock Valve with Luer Connect
-5
137,50
25
60 nil. Syringe with Luer-Lock Tip
3.00
75.00
3
UHP Helium - 34 Liter
55.00
165.00
30
PURE F EP Teflon
Tubing - .187" ID x 114" OD - price per foot
1.99
59.70
t
l-landling Charge
5.00
5.00
Project Manager: Mike ]ones
Sales Tax
6.7500
29.84
Kayla,
Please confirm Redept of the stuff with Brian.
The project is AZ Devei. 2021-336
QK to pay 4 we got it all
Mike
Total $472.04

Vapor!tn
Ship To:
Michael Jones
Pyramid Environmentat
503 Industrial Ave
Greensboro, NC 27406
Packing Slip (rh15I= Pot a bill!
Bill To
Michael Jones
Pyramid Environmental
503 Industrial Ave
Greensboro, NC 27406
Please remit to:
Vapor Pin Enterprises, Inc.
7750 Corporate Blvd.
Plain City, Chic 43084
1-614-504-6915
Payment Terms = Net 30
Order Number
15726
Order date
November 30, 2p21
Payment Method
Credit card
Email
[e-mail]
Telephone [phone]
Product Quantity Rate Total
Contractor VAPOR PING Kits - Brass 2 $792,00 $1,584.00
malenal: Brass
SKU: VPKiT - CON
Subtotal $1,584.00
Shipping $23.52 Ys FadE. Ground
Payment method Credit card
Total $1,607.62
Thank you for your order!
Please note Payment Terms is 30 ❑ays,
NOTE: Ail Items are Non -Returnable
For updates and Helpful Hints — Please follow VAPOR PINe an Llnkedlll
and Facebook!
IF you have any questions. please conlact Laurie Chllcale at 1-614-604.691&
F108SO n018 Payment TOMM IS 30 Days,
NOTE: A I Items are Non-Retumabla
lns4mantslapparatus For measuring or checking the Row, level. pressure or other variables of liquids or gases., includes VAPOR PINSV and related accessories
Hermamzed codes 9026.Sa and 9M 90

Enviro-Equipment, Inc.
11180 Downs Road
Pineville, NC 28134
704-588-7970
www. enviroequipment. com
Quote 62551
August 2nd, 2021
Bill To
Ship To
PW Mike Jones
Attn: Mike Jones
503 Industrial Ave
503 Industrial Ave
Greensboro, NC 27406
Greensboro, NC 27406
United States
United States
866-545-9507
866-545-9507
Delivery
PO Number
Job Number
UPS Ground
TBD
SKU
Item
Quantity
Unit Price
Total
3-Way Valve
3-Way Stopcock Valve with Luer Connections
10
$5.50
$55.00
60-Syringe
60mL Syringe with Luer-Lock tip
10
$3.00
$30.00
UHP-HE-34L
Ultra High Purity (99.999%) Helium, 34 L
1
$55.00
$55.00
FEP-31614-1
3116 x 114 IN. Teflon® FEP Tubing, per foot
20
$1.99
$39.80
114 IN. Ferrule Set PIN: SS-400-SET
4
$4.00
$16.00
114 IN. Ferrule Nut P/W SS-402-1
4
$4.00
$16.00
V
r
All prices are in US dollars and do not include shipping costs unless
otherwise specified.
Subtotal
$211.80
Shipping
$55.00
Sales Tax (6.75%)
$18.01
Order Total
$284.81

Attachment G

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
January 13, 2022
Brett Higgins
Pyramid Environmental
503 Industrial Ave.
Greensboro, NC 27406
RE: Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Dear Brett Higgins:
Enclosed are the analytical results for sample(s) received by the laboratory on December 20, 2021. The results relate only
to the samples included in this report. Results reported herein conform to the applicable TNI/NELAC Standards and the
laboratory's Quality Manual, where applicable, unless otherwise noted in the body of the report.
The test results provided in this final report were generated by each of the following laboratories within the Pace Network:
• Pace Analytical Services - Minneapolis
If you have any questions concerning this report, please feel free to contact me.
Sincerely, r�
Carolynne Trout for
Matt Ray
matt. [e-mail]
[phone]
Project Manager
Enclosures
cc: Mike Jones, Pyramid Environmental
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 1 of 44

laneAnalytical
www,pacelabs.com
Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Pace Analytical Services, LLC - Minneapolis MN
1700 Elm Street SE, Minneapolis, MN 55414
1800 Elm Street SE, Minneapolis, MN 55414--Satellite Air
Lab
A21LA Certification #: 2926.01
Alabama Certification #: 40770
Alaska Contaminated Sites Certification #: 17-009*
Alaska DW Certification #: MN00064
Arizona Certification #: AZ0014*
Arkansas DW Certification #: MN00064
Arkansas WW Certification #: 88-0680
California Certification #: 2929
Colorado Certification #: MN00064
Connecticut Certification #: PH-0256
EPA Region 8 Tribal Water Systems+Wyoming DW
Certification #: via MN 027-053-137
Florida Certification #: E87605*
Georgia Certification #: 959
Hawaii Certification #: MN00064
Idaho Certification #: MN00064
Illinois Certification #: 200011
Indiana Certification #: C-MN-01
Iowa Certification #: 368
Kansas Certification M E-10167
Kentucky DW Certification #: 90062
Kentucky WW Certification #: 90062
Louisiana DEQ Certification #: AI-03086*
Louisiana DW Certification #: MN00064
Maine Certification #: MN00064*
Maryland Certification #: 322
Michigan Certification #: 9909
Minnesota Certification #: 027-053-137*
Minnesota Dept ofAg Approval: via MN 027-053-137
Minnesota Petrofund Registration #: 1240*
Mississippi Certification #: MN00064
CERTIFICATIONS
Missouri Certification #: 10100
Montana Certification #: CERT0092
Nebraska Certification #: NE-OS-18-06
Nevada Certification #: MN00064
New Hampshire Certification #: 2081*
New Jersey Certification #: MN002
New York Certification #: 11647*
North Carolina DW Certification #: 27700
North Carolina WW Certification #: 530
North Dakota Certification #: R-036
Ohio DW Certification #: 41244
Ohio VAP Certification (1700) #: CL101
Ohio VAP Certification (1800) #: CL110*
Oklahoma Certification #: 9507*
Oregon Primary Certification #: MN300001
Oregon Secondary Certification #: MN200001*
Pennsylvania Certification #: 68-00563*
Puerto Rico Certification #: MN00064
South Carolina Certification #:74003001
Tennessee Certification #: TN02818
Texas Certification #: T104704192*
Utah Certification #: MN00064*
Vermont Certification #: VT-027053137
Virginia Certification #: 460163*
Washington Certification #: C486*
West Virginia DEP Certification #: 382
West Virginia DW Certification #: 9952 C
Wisconsin Certification #: 999407970
Wyoming UST Certification #: via A21LA 2926.01
USDA Permit #: P330-19-00208
*Please Note: Applicable air certifications are denoted with
an asterisk (*).
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC. Page 2 of 44

lceAnalyircal
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Pace Analytical Services, LLC
1700 Elm Street
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[phone]
SAMPLE SUMMARY
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Lab ID
Sample ID
Matrix
Date Collected
Date Received
10592093001
CS-1
Air
12/15/2119:31
12/20/2110:09
10592093002
CS-2
Air
12/15/2119:46
12/20/2110:09
10592093003
CS-3
Air
12/15/2118:18
12/20/2110:09
10592093004
CS-4
Air
12/15/2119:02
12/20/2110:09
10592093005
CS-5
Air
12/15/2118:43
12/20/2110:09
10592093006
CS-6
Air
12/15/2118:30
12/20/2110:09
10592093007
SSV-7
Air
12/15/2114:35
12/20/2110:09
10592093008
SSV-8
Air
12/15/2117:07
12/20/2110:09
10592093009
SSV-9
Air
12/15/2111:27
12/20/2110:09
10592093010
SSV-10
Air
12/15/2114:07
12/20/2110:09
10592093011
SSV-11
Air
12/15/2115:20
12/20/2110:09
10592093012
SSV-11 DUP
Air
12/15/21 15:20
12/20/21 10:09
10592093013
CS-12
Air
12/15/2116:55
12/20/2110:09
10592093014
CS-13
Air
12/15/2116:55
12/20/2110:09
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 3 of 44

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Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
SAMPLE ANALYTE COUNT
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Lab ID
Sample ID
Method
Analysts
Analytes
Reported
10592093001
CS-1
TO-15
SW
61
10592093002
CS-2
TO-15
SW
61
10592093003
CS-3
TO-15
SW
61
10592093004
CS-4
TO-15
SW
61
10592093005
CS-5
TO-15
SW
61
10592093006
CS-6
TO-15
SW
61
10592093007
SSV-7
TO-15
SW
61
10592093008
SSV-8
TO-15
SW
61
10592093009
SSV-9
TO-15
AJA, SW
61
10592093010
SSV-10
TO-15
AJA, SW
61
10592093011
SSV-11
TO-15
SW
61
10592093012
SSV-11 DUP
TO-15
SW
61
10592093013
CS-12
TO-15
SW
61
10592093014
CS-13
TO-15
SW
61
PASI-M = Pace Analytical Services - Minneapolis
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 4 of 44

lceAnalyircal
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Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
ANALYTICAL RESULTS
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Sample: CS-1 Lab ID: 10592093001 Collected: 12/15/21 19:31 Received: 12/20/21 10:09 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Acetone
39.0
ug/m3
10.1
1.68
01/13/22 00:58
67-64-1
Benzene
1.5
ug/m3
0.55
1.68
01/13/22 00:58
71-43-2
Benzyl chloride
ND
ug/m3
4.4
1.68
01/13/22 00:58
100-44-7
Bromodichloromethane
ND
ug/m3
2.3
1.68
01/13/22 00:58
75-27-4
Bromoform
ND
ug/m3
8.8
1.68
01/13/22 00:58
75-25-2
Bromomethane
ND
ug/m3
1.3
1.68
01/13/22 00:58
74-83-9
1,3-Butadiene
ND
ug/m3
0.76
1.68
01/13/22 00:58
106-99-0
2-Butanone (MEK)
ND
ug/m3
5.0
1.68
01/13/22 00:58
78-93-3
Carbon disulfide
ND
ug/m3
1.1
1.68
01/13/22 00:58
75-15-0
Carbon tetrachloride
ND
ug/m3
2.2
1.68
01/13/22 00:58
56-23-5
Chlorobenzene
ND
ug/m3
1.6
1.68
01/13/22 00:58
108-90-7
Chloroethane
ND
ug/m3
0.90
1.68
01/13/22 00:58
75-00-3
Chloroform
ND
ug/m3
0.83
1.68
01/13/22 00:58
67-66-3
Chloromethane
1.1
ug/m3
0.71
1.68
01/13/22 00:58
74-87-3
Cyclohexane
ND
ug/m3
2.9
1.68
01/13/22 00:58
110-82-7
Dibromochloromethane
ND
ug/m3
2.9
1.68
01/13/22 00:58
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/m3
1.3
1.68
01/13/22 00:58
106-93-4
1,2-Dichlorobenzene
ND
ug/m3
5.1
1.68
01/13/22 00:58
95-50-1
1,3-Dichlorobenzene
ND
ug/m3
5.1
1.68
01/13/22 00:58
541-73-1
1,4-Dichlorobenzene
ND
ug/m3
5.1
1.68
01/13/22 00:58
106-46-7
Dichlorodifluoromethane
2.7
ug/m3
1.7
1.68
01/13/22 00:58
75-71-8
1,1-Dichloroethane
ND
ug/m3
1.4
1.68
01/13/22 00:58
75-34-3
1,2-Dichloroethane
ND
ug/m3
1.4
1.68
01/13/22 00:58
107-06-2
1,1-Dichloroethene
ND
ug/m3
1.4
1.68
01/13/22 00:58
75-35-4
cis-1,2-Dichloroethene
ND
ug/m3
1.4
1.68
01/13/22 00:58
156-59-2
trans-1,2-Dichloroethene
ND
ug/m3
1.4
1.68
01/13/22 00:58
156-60-5
1,2-Dichloropropene
ND
ug/m3
1.6
1.68
01/13/22 00:58
78-87-5
cis-1,3-Dichloropropene
ND
ug/m3
3.9
1.68
01/13/22 00:58
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/m3
3.9
1.68
01/13/22 00:58
10061-02-6
Dichlorotetrafluoroethane
ND
ug/m3
2.4
1.68
01/13/22 00:58
76-14-2
Ethanol
1050
ug/m3
3.2
1.68
01/13/22 00:58
64-17-5
Ethyl acetate
3.1
ug/m3
1.2
1.68
01/13/22 00:58
141-78-6
Ethylbenzene
ND
ug/m3
1.5
1.68
01/13/22 00:58
100-41-4
4-Ethyltoluene
ND
ug/m3
4.2
1.68
01/13/22 00:58
622-96-8
n-Heptane
ND
ug/m3
1.4
1.68
01/13/22 00:58
142-82-5
Hexachloro-1,3-butadiene
ND
ug/m3
9.1
1.68
01/13/22 00:58
87-68-3
n-Hexane
1.7
ug/m3
1.2
1.68
01/13/22 00:58
110-54-3
2-Hexanone
ND
ug/m3
7.0
1.68
01/13/22 00:58
591-78-6
Methylene Chloride
ND
ug/m3
5.9
1.68
01/13/22 00:58
75-09-2
4-Methyl-2-pentanone (MIBK)
ND
ug/m3
7.0
1.68
01/13/22 00:58
108-10-1
Methyl-tert-butyl ether
ND
ug/m3
6.1
1.68
01/13/22 00:58
1634-04-4
Naphthalene
ND
ug/m3
4.5
1.68
01/13/22 00:58
91-20-3
2-Propanol
23.4
ug/m3
4.2
1.68
01/13/22 00:58
67-63-0
Propylene
ND
ug/m3
1.5
1.68
01/13/22 00:58
115-07-1
Styrene
ND
ug/m3
1.5
1.68
01/13/22 00:58
100-42-5
1,1,2,2-Tetrachloroethane
ND
ug/m3
2.4
1.68
01/13/22 00:58
79-34-5
REPORT OF LABORATORY ANALYSIS
E
This report shall not be reproduced, except in full,
Date: 01 /13/2022 04:54 PM without the written consent of Pace Analytical Services, LLC. Page 5 of 44

lceAnalyircal
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Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
ANALYTICAL RESULTS
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Sample: CS-1 Lab ID: 10592093001 Collected: 12/15/21 19:31 Received: 12/20/21 10:09 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Tetrachloroethene
ND
ug/m3
1.2
1.68
01/13/22 00:58
127-18-4
Tetrahydrofuran
ND
ug/m3
1.0
1.68
01/13/22 00:58
109-99-9
Toluene
4.1
ug/m3
1.3
1.68
01/13/22 00:58
108-88-3
1,2,4-Trichlorobenzene
ND
ug/m3
12.7
1.68
01/13/22 00:58
120-82-1
1,1,1-Trichloroethane
ND
ug/m3
1.9
1.68
01/13/22 00:58
71-55-6
1,1,2-Trichloroethane
ND
ug/m3
0.93
1.68
01/13/22 00:58
79-00-5
Trichloroethene
ND
ug/m3
0.92
1.68
01/13/22 00:58
79-01-6
Trichlorofluoromethane
ND
ug/m3
1.9
1.68
01/13/22 00:58
75-69-4
1,1,2-Trichlorotrifluoroethane
ND
ug/m3
2.6
1.68
01/13/22 00:58
76-13-1
1,2,4-Trimethylbenzene
ND
ug/m3
1.7
1.68
01/13/22 00:58
95-63-6
1,3,5-Trimethylbenzene
ND
ug/m3
1.7
1.68
01/13/22 00:58
108-67-8
Vinyl acetate
ND
ug/m3
1.2
1.68
01/13/22 00:58
108-05-4
Vinyl chloride
ND
ug/m3
0.44
1.68
01/13/22 00:58
75-01-4
m&p-Xylene
ND
ug/m3
3.0
1.68
01/13/22 00:58
179601-23-1
o-Xylene
ND
ug/m3
1.5
1.68
01/13/22 00:58
95-47-6
Date: 01/13/2022 04:54 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 6 of 44

lceAnalyircal
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Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
ANALYTICAL RESULTS
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Sample: CS-2 Lab ID: 10592093002 Collected: 12/15/21 19:46 Received: 12/20/21 10:09 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Acetone
65.4
ug/m3
8.1
1.34
01/13/22 00:24
67-64-1
Benzene
3.0
ug/m3
0.44
1.34
01/13/22 00:24
71-43-2
Benzyl chloride
ND
ug/m3
3.5
1.34
01/13/22 00:24
100-44-7
Bromodichloromethane
ND
ug/m3
1.8
1.34
01/13/22 00:24
75-27-4
Bromoform
ND
ug/m3
7.0
1.34
01/13/22 00:24
75-25-2
Bromomethane
ND
ug/m3
1.1
1.34
01/13/22 00:24
74-83-9
1,3-Butadiene
ND
ug/m3
0.60
1.34
01/13/22 00:24
106-99-0
2-Butanone (MEK)
7.0
ug/m3
4.0
1.34
01/13/22 00:24
78-93-3
Carbon disulfide
1.1
ug/m3
0.85
1.34
01/13/22 00:24
75-15-0
Carbon tetrachloride
ND
ug/m3
1.7
1.34
01/13/22 00:24
56-23-5
Chlorobenzene
ND
ug/m3
1.3
1.34
01/13/22 00:24
108-90-7
Chloroethane
ND
ug/m3
0.72
1.34
01/13/22 00:24
75-00-3
Chloroform
ND
ug/m3
0.66
1.34
01/13/22 00:24
67-66-3
Chloromethane
4.5
ug/m3
0.56
1.34
01/13/22 00:24
74-87-3
Cyclohexane
3.1
ug/m3
2.3
1.34
01/13/22 00:24
110-82-7
Dibromochloromethane
ND
ug/m3
2.3
1.34
01/13/22 00:24
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/m3
1.0
1.34
01/13/22 00:24
106-93-4
1,2-Dichlorobenzene
ND
ug/m3
4.1
1.34
01/13/22 00:24
95-50-1
1,3-Dichlorobenzene
ND
ug/m3
4.1
1.34
01/13/22 00:24
541-73-1
1,4-Dichlorobenzene
ND
ug/m3
4.1
1.34
01/13/22 00:24
106-46-7
Dichlorodifluoromethane
3.0
ug/m3
1.4
1.34
01/13/22 00:24
75-71-8
1,1-Dichloroethane
ND
ug/m3
1.1
1.34
01/13/22 00:24
75-34-3
1,2-Dichloroethane
ND
ug/m3
1.1
1.34
01/13/22 00:24
107-06-2
1,1-Dichloroethene
ND
ug/m3
1.1
1.34
01/13/22 00:24
75-35-4
cis-1,2-Dichloroethene
ND
ug/m3
1.1
1.34
01/13/22 00:24
156-59-2
trans-1,2-Dichloroethene
ND
ug/m3
1.1
1.34
01/13/22 00:24
156-60-5
1,2-Dichloropropene
ND
ug/m3
1.3
1.34
01/13/22 00:24
78-87-5
cis-1,3-Dichloropropene
ND
ug/m3
3.1
1.34
01/13/22 00:24
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/m3
3.1
1.34
01/13/22 00:24
10061-02-6
Dichlorotetrafluoroethane
ND
ug/m3
1.9
1.34
01/13/22 00:24
76-14-2
Ethanol
192
ug/m3
2.6
1.34
01/13/22 00:24
64-17-5
Ethyl acetate
ND
ug/m3
0.98
1.34
01/13/22 00:24
141-78-6
Ethylbenzene
2.5
ug/m3
1.2
1.34
01/13/22 00:24
100-41-4
4-Ethyltoluene
ND
ug/m3
3.4
1.34
01/13/22 00:24
622-96-8
n-Heptane
3.3
ug/m3
1.1
1.34
01/13/22 00:24
142-82-5
Hexachloro-1,3-butadiene
ND
ug/m3
7.3
1.34
01/13/22 00:24
87-68-3
n-Hexane
8.0
ug/m3
0.96
1.34
01/13/22 00:24
110-54-3
2-Hexanone
ND
ug/m3
5.6
1.34
01/13/22 00:24
591-78-6
Methylene Chloride
5.3
ug/m3
4.7
1.34
01/13/22 00:24
75-09-2
4-Methyl-2-pentanone (MIBK)
ND
ug/m3
5.6
1.34
01/13/22 00:24
108-10-1
Methyl-tert-butyl ether
ND
ug/m3
4.9
1.34
01/13/22 00:24
1634-04-4
Naphthalene
ND
ug/m3
3.6
1.34
01/13/22 00:24
91-20-3
2-Propanol
18.4
ug/m3
3.4
1.34
01/13/22 00:24
67-63-0
Propylene
ND
ug/m3
1.2
1.34
01/13/22 00:24
115-07-1
Styrene
1.4
ug/m3
1.2
1.34
01/13/22 00:24
100-42-5
1,1,2,2-Tetrachloroethane
ND
ug/m3
1.9
1.34
01/13/22 00:24
79-34-5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 01 /13/2022 04:54 PM without the written consent of Pace Analytical Services, LLC. Page 7 of 44

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
ANALYTICAL RESULTS
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Sample: CS-2 Lab ID: 10592093002 Collected: 12/15/21 19:46 Received: 12/20/21 10:09 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Tetrachloroethene
2.0
ug/m3
0.92
1.34
01/13/22 00:24
127-18-4
Tetrahydrofuran
ND
ug/m3
0.80
1.34
01/13/22 00:24
109-99-9
Toluene
63.7
ug/m3
1.0
1.34
01/13/22 00:24
108-88-3
1,2,4-Trichlorobenzene
ND
ug/m3
10.1
1.34
01/13/22 00:24
120-82-1
1,1,1-Trichloroethane
ND
ug/m3
1.5
1.34
01/13/22 00:24
71-55-6
1,1,2-Trichloroethane
ND
ug/m3
0.74
1.34
01/13/22 00:24
79-00-5
Trichloroethene
3.3
ug/m3
0.73
1.34
01/13/22 00:24
79-01-6
Trichlorofluoromethane
1.6
ug/m3
1.5
1.34
01/13/22 00:24
75-69-4
1,1,2-Trichlorotrifluoroethane
ND
ug/m3
2.1
1.34
01/13/22 00:24
76-13-1
1,2,4-Trimethylbenzene
ND
ug/m3
1.3
1.34
01/13/22 00:24
95-63-6
1,3,5-Trimethylbenzene
ND
ug/m3
1.3
1.34
01/13/22 00:24
108-67-8
Vinyl acetate
ND
ug/m3
0.96
1.34
01/13/22 00:24
108-05-4
Vinyl chloride
ND
ug/m3
0.35
1.34
01/13/22 00:24
75-01-4
m&p-Xylene
8.0
ug/m3
2.4
1.34
01/13/22 00:24
179601-23-1
o-Xylene
3.0
ug/m3
1.2
1.34
01/13/22 00:24
95-47-6
Date: 01/13/2022 04:54 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 8 of 44

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
ANALYTICAL RESULTS
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Sample: CS-3 Lab ID: 10592093003 Collected: 12/15/21 18:18 Received: 12/20/21 10:09 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Acetone
18.4
ug/m3
11.1
1.83
01/12/22 19:19
67-64-1
Benzene
2.7
ug/m3
0.59
1.83
01/12/22 19:19
71-43-2
Benzyl chloride
ND
ug/m3
4.8
1.83
01/12/22 19:19
100-44-7
Bromodichloromethane
ND
ug/m3
2.5
1.83
01/12/22 19:19
75-27-4
Bromoform
ND
ug/m3
9.6
1.83
01/12/22 19:19
75-25-2
Bromomethane
ND
ug/m3
1.4
1.83
01/12/22 19:19
74-83-9
1,3-Butadiene
ND
ug/m3
0.82
1.83
01/12/22 19:19
106-99-0
2-Butanone (MEK)
ND
ug/m3
5.5
1.83
01/12/22 19:19
78-93-3
Carbon disulfide
ND
ug/m3
1.2
1.83
01/12/22 19:19
75-15-0
Carbon tetrachloride
ND
ug/m3
2.3
1.83
01/12/22 19:19
56-23-5
Chlorobenzene
ND
ug/m3
1.7
1.83
01/12/22 19:19
108-90-7
Chloroethane
ND
ug/m3
0.98
1.83
01/12/22 19:19
75-00-3
Chloroform
ND
ug/m3
0.91
1.83
01/12/22 19:19
67-66-3
Chloromethane
1.1
ug/m3
0.77
1.83
01/12/22 19:19
74-87-3
Cyclohexane
4.8
ug/m3
3.2
1.83
01/12/22 19:19
110-82-7
Dibromochloromethane
ND
ug/m3
3.2
1.83
01/12/22 19:19
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/m3
1.4
1.83
01/12/22 19:19
106-93-4
1,2-Dichlorobenzene
ND
ug/m3
5.6
1.83
01/12/22 19:19
95-50-1
1,3-Dichlorobenzene
ND
ug/m3
5.6
1.83
01/12/22 19:19
541-73-1
1,4-Dichlorobenzene
ND
ug/m3
5.6
1.83
01/12/22 19:19
106-46-7
Dichlorodifluoromethane
2.7
ug/m3
1.8
1.83
01/12/22 19:19
75-71-8
1,1-Dichloroethane
ND
ug/m3
1.5
1.83
01/12/22 19:19
75-34-3
1,2-Dichloroethane
ND
ug/m3
1.5
1.83
01/12/22 19:19
107-06-2
1,1-Dichloroethene
ND
ug/m3
1.5
1.83
01/12/22 19:19
75-35-4
cis-1,2-Dichloroethene
ND
ug/m3
1.5
1.83
01/12/22 19:19
156-59-2
trans-1,2-Dichloroethene
ND
ug/m3
1.5
1.83
01/12/22 19:19
156-60-5
1,2-Dichloropropene
ND
ug/m3
1.7
1.83
01/12/22 19:19
78-87-5
cis-1,3-Dichloropropene
ND
ug/m3
4.2
1.83
01/12/22 19:19
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/m3
4.2
1.83
01/12/22 19:19
10061-02-6
Dichlorotetrafluoroethane
ND
ug/m3
2.6
1.83
01/12/22 19:19
76-14-2
Ethanol
309
ug/m3
3.5
1.83
01/12/22 19:19
64-17-5
Ethyl acetate
ND
ug/m3
1.3
1.83
01/12/22 19:19
141-78-6
Ethylbenzene
ND
ug/m3
1.6
1.83
01/12/22 19:19
100-41-4
4-Ethyltoluene
ND
ug/m3
4.6
1.83
01/12/22 19:19
622-96-8
n-Heptane
11.5
ug/m3
1.5
1.83
01/12/22 19:19
142-82-5
Hexachloro-1,3-butadiene
ND
ug/m3
9.9
1.83
01/12/22 19:19
87-68-3
n-Hexane
1.5
ug/m3
1.3
1.83
01/12/22 19:19
110-54-3
2-Hexanone
ND
ug/m3
7.6
1.83
01/12/22 19:19
591-78-6
Methylene Chloride
ND
ug/m3
6.5
1.83
01/12/22 19:19
75-09-2
4-Methyl-2-pentanone (MIBK)
ND
ug/m3
7.6
1.83
01/12/22 19:19
108-10-1
Methyl-tert-butyl ether
ND
ug/m3
6.7
1.83
01/12/22 19:19
1634-04-4
Naphthalene
ND
ug/m3
4.9
1.83
01/12/22 19:19
91-20-3
2-Propanol
5.6
ug/m3
4.6
1.83
01/12/22 19:19
67-63-0
Propylene
4.2
ug/m3
1.6
1.83
01/12/22 19:19
115-07-1
Styrene
ND
ug/m3
1.6
1.83
01/12/22 19:19
100-42-5
1,1,2,2-Tetrachloroethane
ND
ug/m3
2.6
1.83
01/12/22 19:19
79-34-5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 01 /13/2022 04:54 PM without the written consent of Pace Analytical Services, LLC. Page 9 of 44

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
ANALYTICAL RESULTS
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Sample: CS-3 Lab ID: 10592093003 Collected: 12/15/21 18:18 Received: 12/20/21 10:09 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Tetrachloroethene
ND
ug/m3
1.3
1.83
01/12/22 19:19
127-18-4
Tetrahydrofuran
ND
ug/m3
1.1
1.83
01/12/22 19:19
109-99-9
Toluene
5.5
ug/m3
1.4
1.83
01/12/22 19:19
108-88-3
1,2,4-Trichlorobenzene
ND
ug/m3
13.8
1.83
01/12/22 19:19
120-82-1
1,1,1-Trichloroethane
ND
ug/m3
2.0
1.83
01/12/22 19:19
71-55-6
1,1,2-Trichloroethane
ND
ug/m3
1.0
1.83
01/12/22 19:19
79-00-5
Trichloroethene
ND
ug/m3
1.0
1.83
01/12/22 19:19
79-01-6
Trichlorofluoromethane
ND
ug/m3
2.1
1.83
01/12/22 19:19
75-69-4
1,1,2-Trichlorotrifluoroethane
ND
ug/m3
2.9
1.83
01/12/22 19:19
76-13-1
1,2,4-Trimethylbenzene
ND
ug/m3
1.8
1.83
01/12/22 19:19
95-63-6
1,3,5-Trimethylbenzene
ND
ug/m3
1.8
1.83
01/12/22 19:19
108-67-8
Vinyl acetate
ND
ug/m3
1.3
1.83
01/12/22 19:19
108-05-4
Vinyl chloride
ND
ug/m3
0.48
1.83
01/12/22 19:19
75-01-4
m&p-Xylene
ND
ug/m3
3.2
1.83
01/12/22 19:19
179601-23-1
o-Xylene
ND
ug/m3
1.6
1.83
01/12/22 19:19
95-47-6
Date: 01/13/2022 04:54 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 10 of 44

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
ANALYTICAL RESULTS
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Sample: CS-4 Lab ID: 10592093004 Collected: 12/15/21 19:02 Received: 12/20/21 10:09 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Acetone
60.2
ug/m3
12.8
2.12
01/12/22 23:50
67-64-1
Benzene
1.1
ug/m3
0.69
2.12
01/12/22 23:50
71-43-2
Benzyl chloride
ND
ug/m3
5.6
2.12
01/12/22 23:50
100-44-7
Bromodichloromethane
ND
ug/m3
2.9
2.12
01/12/22 23:50
75-27-4
Bromoform
ND
ug/m3
11.1
2.12
01/12/22 23:50
75-25-2
Bromomethane
ND
ug/m3
1.7
2.12
01/12/22 23:50
74-83-9
1,3-Butadiene
ND
ug/m3
0.95
2.12
01/12/22 23:50
106-99-0
2-Butanone (MEK)
7.3
ug/m3
6.4
2.12
01/12/22 23:50
78-93-3
Carbon disulfide
ND
ug/m3
1.3
2.12
01/12/22 23:50
75-15-0
Carbon tetrachloride
ND
ug/m3
2.7
2.12
01/12/22 23:50
56-23-5
Chlorobenzene
ND
ug/m3
2.0
2.12
01/12/22 23:50
108-90-7
Chloroethane
ND
ug/m3
1.1
2.12
01/12/22 23:50
75-00-3
Chloroform
ND
ug/m3
1.1
2.12
01/12/22 23:50
67-66-3
Chloromethane
1.7
ug/m3
0.89
2.12
01/12/22 23:50
74-87-3
Cyclohexane
ND
ug/m3
3.7
2.12
01/12/22 23:50
110-82-7
Dibromochloromethane
ND
ug/m3
3.7
2.12
01/12/22 23:50
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/m3
1.7
2.12
01/12/22 23:50
106-93-4
1,2-Dichlorobenzene
ND
ug/m3
6.5
2.12
01/12/22 23:50
95-50-1
1,3-Dichlorobenzene
ND
ug/m3
6.5
2.12
01/12/22 23:50
541-73-1
1,4-Dichlorobenzene
ND
ug/m3
6.5
2.12
01/12/22 23:50
106-46-7
Dichlorodifluoromethane
3.2
ug/m3
2.1
2.12
01/12/22 23:50
75-71-8
1,1-Dichloroethane
ND
ug/m3
1.7
2.12
01/12/22 23:50
75-34-3
1,2-Dichloroethane
ND
ug/m3
1.7
2.12
01/12/22 23:50
107-06-2
1,1-Dichloroethene
ND
ug/m3
1.7
2.12
01/12/22 23:50
75-35-4
cis-1,2-Dichloroethene
ND
ug/m3
1.7
2.12
01/12/22 23:50
156-59-2
trans-1,2-Dichloroethene
ND
ug/m3
1.7
2.12
01/12/22 23:50
156-60-5
1,2-Dichloropropene
ND
ug/m3
2.0
2.12
01/12/22 23:50
78-87-5
cis-1,3-Dichloropropene
ND
ug/m3
4.9
2.12
01/12/22 23:50
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/m3
4.9
2.12
01/12/22 23:50
10061-02-6
Dichlorotetrafluoroethane
ND
ug/m3
3.0
2.12
01/12/22 23:50
76-14-2
Ethanol
1480
ug/m3
4.1
2.12
01/12/22 23:50
64-17-5
Ethyl acetate
3.5
ug/m3
1.6
2.12
01/12/22 23:50
141-78-6
Ethylbenzene
ND
ug/m3
1.9
2.12
01/12/22 23:50
100-41-4
4-Ethyltoluene
ND
ug/m3
5.3
2.12
01/12/22 23:50
622-96-8
n-Heptane
ND
ug/m3
1.8
2.12
01/12/22 23:50
142-82-5
Hexachloro-1,3-butadiene
ND
ug/m3
11.5
2.12
01/12/22 23:50
87-68-3
n-Hexane
ND
ug/m3
1.5
2.12
01/12/22 23:50
110-54-3
2-Hexanone
ND
ug/m3
8.8
2.12
01/12/22 23:50
591-78-6
Methylene Chloride
ND
ug/m3
7.5
2.12
01/12/22 23:50
75-09-2
4-Methyl-2-pentanone (MIBK)
ND
ug/m3
8.8
2.12
01/12/22 23:50
108-10-1
Methyl-tert-butyl ether
ND
ug/m3
7.8
2.12
01/12/22 23:50
1634-04-4
Naphthalene
ND
ug/m3
5.6
2.12
01/12/22 23:50
91-20-3
2-Propanol
19.9
ug/m3
5.3
2.12
01/12/22 23:50
67-63-0
Propylene
ND
ug/m3
1.9
2.12
01/12/22 23:50
115-07-1
Styrene
ND
ug/m3
1.8
2.12
01/12/22 23:50
100-42-5
1,1,2,2-Tetrachloroethane
ND
ug/m3
3.0
2.12
01/12/22 23:50
79-34-5
REPORT OF LABORATORY ANALYSIS
E
This report shall not be reproduced, except in full,
Date: 01 /13/2022 04:54 PM without the written consent of Pace Analytical Services, LLC. Page 11 of 44

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
ANALYTICAL RESULTS
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Sample: CS-4 Lab ID: 10592093004 Collected: 12/15/21 19:02 Received: 12/20/21 10:09 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Tetrachloroethene
ND
ug/m3
1.5
2.12
01/12/22 23:50
127-18-4
Tetrahydrofuran
ND
ug/m3
1.3
2.12
01/12/22 23:50
109-99-9
Toluene
2.8
ug/m3
1.6
2.12
01/12/22 23:50
108-88-3
1,2,4-Trichlorobenzene
ND
ug/m3
16.0
2.12
01/12/22 23:50
120-82-1
1,1,1-Trichloroethane
ND
ug/m3
2.4
2.12
01/12/22 23:50
71-55-6
1,1,2-Trichloroethane
ND
ug/m3
1.2
2.12
01/12/22 23:50
79-00-5
Trichloroethene
ND
ug/m3
1.2
2.12
01/12/22 23:50
79-01-6
Trichlorofluoromethane
ND
ug/m3
2.4
2.12
01/12/22 23:50
75-69-4
1,1,2-Trichlorotrifluoroethane
ND
ug/m3
3.3
2.12
01/12/22 23:50
76-13-1
1,2,4-Trimethylbenzene
ND
ug/m3
2.1
2.12
01/12/22 23:50
95-63-6
1,3,5-Trimethylbenzene
ND
ug/m3
2.1
2.12
01/12/22 23:50
108-67-8
Vinyl acetate
ND
ug/m3
1.5
2.12
01/12/22 23:50
108-05-4
Vinyl chloride
ND
ug/m3
0.55
2.12
01/12/22 23:50
75-01-4
m&p-Xylene
ND
ug/m3
3.8
2.12
01/12/22 23:50
179601-23-1
o-Xylene
ND
ug/m3
1.9
2.12
01/12/22 23:50
95-47-6
Date: 01/13/2022 04:54 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 12 of 44

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
ANALYTICAL RESULTS
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Sample: CS-5 Lab ID: 10592093005 Collected: 12/15/21 18:43 Received: 12/20/21 10:09 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Dichlorodifluoromethane
2.9
ug/m3
2.0
1.96
01/12/22 16:30
75-71-8
Chloromethane
1.7
ug/m3
0.82
1.96
01/12/22 16:30
74-87-3
Dichlorotetrafluoroethane
ND
ug/m3
2.8
1.96
01/12/22 16:30
76-14-2
Vinyl chloride
ND
ug/m3
0.51
1.96
01/12/22 16:30
75-01-4
Bromomethane
ND
ug/m3
1.5
1.96
01/12/22 16:30
74-83-9
Chloroethane
ND
ug/m3
1.1
1.96
01/12/22 16:30
75-00-3
Trichlorofluoromethane
ND
ug/m3
2.2
1.96
01/12/22 16:30
75-69-4
1,1-Dichloroethene
ND
ug/m3
1.6
1.96
01/12/22 16:30
75-35-4
1,1,2-Trichlorotrifluoroethane
ND
ug/m3
3.1
1.96
01/12/22 16:30
76-13-1
Methylene Chloride
ND
ug/m3
6.9
1.96
01/12/22 16:30
75-09-2
1,1-Dichloroethane
ND
ug/m3
1.6
1.96
01/12/22 16:30
75-34-3
cis-1,2-Dichloroethene
ND
ug/m3
1.6
1.96
01/12/22 16:30
156-59-2
Chloroform
ND
ug/m3
0.97
1.96
01/12/22 16:30
67-66-3
1,1,1-Trichloroethane
ND
ug/m3
2.2
1.96
01/12/22 16:30
71-55-6
1,1,2-Trichloroethane
ND
ug/m3
1.1
1.96
01/12/22 16:30
79-00-5
1,2-Dichloroethane
ND
ug/m3
1.6
1.96
01/12/22 16:30
107-06-2
Benzene
1.1
ug/m3
0.64
1.96
01/12/22 16:30
71-43-2
Carbon tetrachloride
ND
ug/m3
2.5
1.96
01/12/22 16:30
56-23-5
1,2-Dichloropropene
ND
ug/m3
1.8
1.96
01/12/22 16:30
78-87-5
Trichloroethene
ND
ug/m3
1.1
1.96
01/12/22 16:30
79-01-6
cis-1,3-Dichloropropene
ND
ug/m3
4.5
1.96
01/12/22 16:30
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/m3
4.5
1.96
01/12/22 16:30
10061-02-6
Toluene
8.9
ug/m3
1.5
1.96
01/12/22 16:30
108-88-3
1,2-Dibromoethane (EDB)
ND
ug/m3
1.5
1.96
01/12/22 16:30
106-93-4
Tetrachloroethene
ND
ug/m3
1.4
1.96
01/12/22 16:30
127-18-4
Chlorobenzene
ND
ug/m3
1.8
1.96
01/12/22 16:30
108-90-7
Ethylbenzene
ND
ug/m3
1.7
1.96
01/12/22 16:30
100-41-4
m&p-Xylene
ND
ug/m3
3.5
1.96
01/12/22 16:30
179601-23-1
o-Xylene
ND
ug/m3
1.7
1.96
01/12/22 16:30
95-47-6
Styrene
ND
ug/m3
1.7
1.96
01/12/22 16:30
100-42-5
1,1,2,2-Tetrachloroethane
ND
ug/m3
2.7
1.96
01/12/22 16:30
79-34-5
1,3,5-Trimethylbenzene
ND
ug/m3
2.0
1.96
01/12/22 16:30
108-67-8
1,2,4-Trimethylbenzene
ND
ug/m3
2.0
1.96
01/12/22 16:30
95-63-6
1,3-Dichlorobenzene
ND
ug/m3
6.0
1.96
01/12/22 16:30
541-73-1
1,4-Dichlorobenzene
ND
ug/m3
6.0
1.96
01/12/22 16:30
106-46-7
1,2-Dichlorobenzene
ND
ug/m3
6.0
1.96
01/12/22 16:30
95-50-1
1,2,4-Trichlorobenzene
ND
ug/m3
14.8
1.96
01/12/22 16:30
120-82-1
Hexachloro-1,3-butadiene
ND
ug/m3
10.6
1.96
01/12/22 16:30
87-68-3
Tetrahydrofuran
ND
ug/m3
1.2
1.96
01/12/22 16:30
109-99-9
Acetone
97.0
ug/m3
11.8
1.96
01/12/22 16:30
67-64-1
2-Butanone (MEK)
6.4
ug/m3
5.9
1.96
01/12/22 16:30
78-93-3
n-Hexane
ND
ug/m3
1.4
1.96
01/12/22 16:30
110-54-3
Methyl-tert-butyl ether
ND
ug/m3
7.2
1.96
01/12/22 16:30
1634-04-4
Dibromochloromethane
ND
ug/m3
3.4
1.96
01/12/22 16:30
124-48-1
1,3-Butadiene
ND
ug/m3
0.88
1.96
01/12/22 16:30
106-99-0
Carbon disulfide
ND
ug/m3
1.2
1.96
01/12/22 16:30
75-15-0
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 01 /13/2022 04:54 PM without the written consent of Pace Analytical Services, LLC. Page 13 of 44

lceAnalyircal
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Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
ANALYTICAL RESULTS
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Sample: CS-5 Lab ID: 10592093005 Collected: 12/15/21 18:43 Received: 12/20/21 10:09 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Vinyl acetate
ND
ug/m3
1.4
1.96
01/12/22 16:30
108-05-4
Cyclohexane
ND
ug/m3
3.4
1.96
01/12/22 16:30
110-82-7
Ethyl acetate
3.7
ug/m3
1.4
1.96
01/12/22 16:30
141-78-6
4-Methyl-2-pentanone (MIBK)
ND
ug/m3
8.2
1.96
01/12/22 16:30
108-10-1
2-Hexanone
ND
ug/m3
8.2
1.96
01/12/22 16:30
591-78-6
Bromoform
ND
ug/m3
10.3
1.96
01/12/22 16:30
75-25-2
trans-1,2-Dichloroethene
ND
ug/m3
1.6
1.96
01/12/22 16:30
156-60-5
Bromodichloromethane
ND
ug/m3
2.7
1.96
01/12/22 16:30
75-27-4
n-Heptane
ND
ug/m3
1.6
1.96
01/12/22 16:30
142-82-5
Propylene
ND
ug/m3
1.7
1.96
01/12/22 16:30
115-07-1
4-Ethyltoluene
ND
ug/m3
4.9
1.96
01/12/22 16:30
622-96-8
Naphthalene
5.8
ug/m3
5.2
1.96
01/12/22 16:30
91-20-3
Ethanol
1550
ug/m3
3.8
1.96
01/12/22 16:30
64-17-5
2-Propanol
23.0
ug/m3
4.9
1.96
01/12/22 16:30
67-63-0
Benzyl chloride
ND
ug/m3
5.2
1.96
01/12/22 16:30
100-44-7
Date: 01/13/2022 04:54 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
E
Page 14 of 44

lceAnalyircal
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Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
ANALYTICAL RESULTS
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Sample: CS-6 Lab ID: 10592093006 Collected: 12/15/21 18:30 Received: 12/20/21 10:09 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Acetone
32.8
ug/m3
10.3
1.71
01/12/22 17:38
67-64-1
Benzene
1.2
ug/m3
0.56
1.71
01/12/22 17:38
71-43-2
Benzyl chloride
ND
ug/m3
4.5
1.71
01/12/22 17:38
100-44-7
Bromodichloromethane
ND
ug/m3
2.3
1.71
01/12/22 17:38
75-27-4
Bromoform
ND
ug/m3
9.0
1.71
01/12/22 17:38
75-25-2
Bromomethane
ND
ug/m3
1.3
1.71
01/12/22 17:38
74-83-9
1,3-Butadiene
ND
ug/m3
0.77
1.71
01/12/22 17:38
106-99-0
2-Butanone (MEK)
ND
ug/m3
5.1
1.71
01/12/22 17:38
78-93-3
Carbon disulfide
ND
ug/m3
1.1
1.71
01/12/22 17:38
75-15-0
Carbon tetrachloride
ND
ug/m3
2.2
1.71
01/12/22 17:38
56-23-5
Chlorobenzene
ND
ug/m3
1.6
1.71
01/12/22 17:38
108-90-7
Chloroethane
ND
ug/m3
0.92
1.71
01/12/22 17:38
75-00-3
Chloroform
ND
ug/m3
0.85
1.71
01/12/22 17:38
67-66-3
Chloromethane
1.3
ug/m3
0.72
1.71
01/12/22 17:38
74-87-3
Cyclohexane
ND
ug/m3
3.0
1.71
01/12/22 17:38
110-82-7
Dibromochloromethane
ND
ug/m3
3.0
1.71
01/12/22 17:38
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/m3
1.3
1.71
01/12/22 17:38
106-93-4
1,2-Dichlorobenzene
ND
ug/m3
5.2
1.71
01/12/22 17:38
95-50-1
1,3-Dichlorobenzene
ND
ug/m3
5.2
1.71
01/12/22 17:38
541-73-1
1,4-Dichlorobenzene
ND
ug/m3
5.2
1.71
01/12/22 17:38
106-46-7
Dichlorodifluoromethane
2.6
ug/m3
1.7
1.71
01/12/22 17:38
75-71-8
1,1-Dichloroethane
ND
ug/m3
1.4
1.71
01/12/22 17:38
75-34-3
1,2-Dichloroethane
ND
ug/m3
1.4
1.71
01/12/22 17:38
107-06-2
1,1-Dichloroethene
ND
ug/m3
1.4
1.71
01/12/22 17:38
75-35-4
cis-1,2-Dichloroethene
ND
ug/m3
1.4
1.71
01/12/22 17:38
156-59-2
trans-1,2-Dichloroethene
ND
ug/m3
1.4
1.71
01/12/22 17:38
156-60-5
1,2-Dichloropropene
ND
ug/m3
1.6
1.71
01/12/22 17:38
78-87-5
cis-1,3-Dichloropropene
ND
ug/m3
4.0
1.71
01/12/22 17:38
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/m3
4.0
1.71
01/12/22 17:38
10061-02-6
Dichlorotetrafluoroethane
ND
ug/m3
2.4
1.71
01/12/22 17:38
76-14-2
Ethanol
1340
ug/m3
3.3
1.71
01/12/22 17:38
64-17-5
Ethyl acetate
2.7
ug/m3
1.3
1.71
01/12/22 17:38
141-78-6
Ethylbenzene
ND
ug/m3
1.5
1.71
01/12/22 17:38
100-41-4
4-Ethyltoluene
ND
ug/m3
4.3
1.71
01/12/22 17:38
622-96-8
n-Heptane
4.9
ug/m3
1.4
1.71
01/12/22 17:38
142-82-5
Hexachloro-1,3-butadiene
ND
ug/m3
9.3
1.71
01/12/22 17:38
87-68-3
n-Hexane
1.2
ug/m3
1.2
1.71
01/12/22 17:38
110-54-3
2-Hexanone
ND
ug/m3
7.1
1.71
01/12/22 17:38
591-78-6
Methylene Chloride
ND
ug/m3
6.0
1.71
01/12/22 17:38
75-09-2
4-Methyl-2-pentanone (MIBK)
ND
ug/m3
7.1
1.71
01/12/22 17:38
108-10-1
Methyl-tert-butyl ether
ND
ug/m3
6.3
1.71
01/12/22 17:38
1634-04-4
Naphthalene
ND
ug/m3
4.5
1.71
01/12/22 17:38
91-20-3
2-Propanol
16.1
ug/m3
4.3
1.71
01/12/22 17:38
67-63-0
Propylene
ND
ug/m3
1.5
1.71
01/12/22 17:38
115-07-1
Styrene
ND
ug/m3
1.5
1.71
01/12/22 17:38
100-42-5
1,1,2,2-Tetrachloroethane
ND
ug/m3
2.4
1.71
01/12/22 17:38
79-34-5
REPORT OF LABORATORY ANALYSIS
E
This report shall not be reproduced, except in full,
Date: 01 /13/2022 04:54 PM without the written consent of Pace Analytical Services, LLC. Page 15 of 44

lceAnalyircal
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Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
ANALYTICAL RESULTS
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Sample: CS-6 Lab ID: 10592093006 Collected: 12/15/21 18:30 Received: 12/20/21 10:09 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Tetrachloroethene
ND
ug/m3
1.2
1.71
01/12/22 17:38
127-18-4
Tetrahydrofuran
ND
ug/m3
1.0
1.71
01/12/22 17:38
109-99-9
Toluene
3.1
ug/m3
1.3
1.71
01/12/22 17:38
108-88-3
1,2,4-Trichlorobenzene
ND
ug/m3
12.9
1.71
01/12/22 17:38
120-82-1
1,1,1-Trichloroethane
ND
ug/m3
1.9
1.71
01/12/22 17:38
71-55-6
1,1,2-Trichloroethane
ND
ug/m3
0.95
1.71
01/12/22 17:38
79-00-5
Trichloroethene
ND
ug/m3
0.93
1.71
01/12/22 17:38
79-01-6
Trichlorofluoromethane
ND
ug/m3
1.9
1.71
01/12/22 17:38
75-69-4
1,1,2-Trichlorotrifluoroethane
ND
ug/m3
2.7
1.71
01/12/22 17:38
76-13-1
1,2,4-Trimethylbenzene
ND
ug/m3
1.7
1.71
01/12/22 17:38
95-63-6
1,3,5-Trimethylbenzene
ND
ug/m3
1.7
1.71
01/12/22 17:38
108-67-8
Vinyl acetate
ND
ug/m3
1.2
1.71
01/12/22 17:38
108-05-4
Vinyl chloride
ND
ug/m3
0.44
1.71
01/12/22 17:38
75-01-4
m&p-Xylene
ND
ug/m3
3.0
1.71
01/12/22 17:38
179601-23-1
o-Xylene
ND
ug/m3
1.5
1.71
01/12/22 17:38
95-47-6
Date: 01/13/2022 04:54 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 16 of 44

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
ANALYTICAL RESULTS
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Sample: SSV-7 Lab ID: 10592093007 Collected: 12/15/21 14:35 Received: 12/20/21 10:09 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Acetone
ND
ug/m3
10.8
1.79
01/12/22 18:45
67-64-1
Benzene
ND
ug/m3
0.58
1.79
01/12/22 18:45
71-43-2
Benzyl chloride
ND
ug/m3
4.7
1.79
01/12/22 18:45
100-44-7
Bromodichloromethane
ND
ug/m3
2.4
1.79
01/12/22 18:45
75-27-4
Bromoform
ND
ug/m3
9.4
1.79
01/12/22 18:45
75-25-2
Bromomethane
ND
ug/m3
1.4
1.79
01/12/22 18:45
74-83-9
1,3-Butadiene
ND
ug/m3
0.81
1.79
01/12/22 18:45
106-99-0
2-Butanone (MEK)
ND
ug/m3
5.4
1.79
01/12/22 18:45
78-93-3
Carbon disulfide
ND
ug/m3
1.1
1.79
01/12/22 18:45
75-15-0
Carbon tetrachloride
ND
ug/m3
2.3
1.79
01/12/22 18:45
56-23-5
Chlorobenzene
ND
ug/m3
1.7
1.79
01/12/22 18:45
108-90-7
Chloroethane
ND
ug/m3
0.96
1.79
01/12/22 18:45
75-00-3
Chloroform
3.5
ug/m3
0.89
1.79
01/12/22 18:45
67-66-3
Chloromethane
ND
ug/m3
0.75
1.79
01/12/22 18:45
74-87-3
Cyclohexane
ND
ug/m3
3.1
1.79
01/12/22 18:45
110-82-7
Dibromochloromethane
ND
ug/m3
3.1
1.79
01/12/22 18:45
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/m3
1.4
1.79
01/12/22 18:45
106-93-4
1,2-Dichlorobenzene
ND
ug/m3
5.5
1.79
01/12/22 18:45
95-50-1
1,3-Dichlorobenzene
ND
ug/m3
5.5
1.79
01/12/22 18:45
541-73-1
1,4-Dichlorobenzene
ND
ug/m3
5.5
1.79
01/12/22 18:45
106-46-7
Dichlorodifluoromethane
2.8
ug/m3
1.8
1.79
01/12/22 18:45
75-71-8
1,1-Dichloroethane
ND
ug/m3
1.5
1.79
01/12/22 18:45
75-34-3
1,2-Dichloroethane
ND
ug/m3
1.5
1.79
01/12/22 18:45
107-06-2
1,1-Dichloroethene
ND
ug/m3
1.4
1.79
01/12/22 18:45
75-35-4
cis-1,2-Dichloroethene
ND
ug/m3
1.4
1.79
01/12/22 18:45
156-59-2
trans-1,2-Dichloroethene
ND
ug/m3
1.4
1.79
01/12/22 18:45
156-60-5
1,2-Dichloropropene
ND
ug/m3
1.7
1.79
01/12/22 18:45
78-87-5
cis-1,3-Dichloropropene
ND
ug/m3
4.1
1.79
01/12/22 18:45
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/m3
4.1
1.79
01/12/22 18:45
10061-02-6
Dichlorotetrafluoroethane
ND
ug/m3
2.5
1.79
01/12/22 18:45
76-14-2
Ethanol
102
ug/m3
3.4
1.79
01/12/22 18:45
64-17-5
Ethyl acetate
ND
ug/m3
1.3
1.79
01/12/22 18:45
141-78-6
Ethylbenzene
ND
ug/m3
1.6
1.79
01/12/22 18:45
100-41-4
4-Ethyltoluene
ND
ug/m3
4.5
1.79
01/12/22 18:45
622-96-8
n-Heptane
ND
ug/m3
1.5
1.79
01/12/22 18:45
142-82-5
Hexachloro-1,3-butadiene
ND
ug/m3
9.7
1.79
01/12/22 18:45
87-68-3
n-Hexane
ND
ug/m3
1.3
1.79
01/12/22 18:45
110-54-3
2-Hexanone
ND
ug/m3
7.4
1.79
01/12/22 18:45
591-78-6
Methylene Chloride
ND
ug/m3
6.3
1.79
01/12/22 18:45
75-09-2
4-Methyl-2-pentanone (MIBK)
ND
ug/m3
7.4
1.79
01/12/22 18:45
108-10-1
Methyl-tert-butyl ether
ND
ug/m3
6.6
1.79
01/12/22 18:45
1634-04-4
Naphthalene
ND
ug/m3
4.8
1.79
01/12/22 18:45
91-20-3
2-Propanol
ND
ug/m3
4.5
1.79
01/12/22 18:45
67-63-0
Propylene
ND
ug/m3
1.6
1.79
01/12/22 18:45
115-07-1
Styrene
ND
ug/m3
1.6
1.79
01/12/22 18:45
100-42-5
1,1,2,2-Tetrachloroethane
ND
ug/m3
2.5
1.79
01/12/22 18:45
79-34-5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 01 /13/2022 04:54 PM without the written consent of Pace Analytical Services, LLC. Page 17 of 44

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
ANALYTICAL RESULTS
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Sample: SSV-7 Lab ID: 10592093007 Collected: 12/15/21 14:35 Received: 12/20/21 10:09 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Tetrachloroethene
69.1
ug/m3
1.2
1.79
01/12/22 18:45
127-18-4
Tetrahydrofuran
ND
ug/m3
1.1
1.79
01/12/22 18:45
109-99-9
Toluene
ND
ug/m3
1.4
1.79
01/12/22 18:45
108-88-3
1,2,4-Trichlorobenzene
ND
ug/m3
13.5
1.79
01/12/22 18:45
120-82-1
1,1,1-Trichloroethane
ND
ug/m3
2.0
1.79
01/12/22 18:45
71-55-6
1,1,2-Trichloroethane
ND
ug/m3
0.99
1.79
01/12/22 18:45
79-00-5
Trichloroethene
ND
ug/m3
0.98
1.79
01/12/22 18:45
79-01-6
Trichlorofluoromethane
ND
ug/m3
2.0
1.79
01/12/22 18:45
75-69-4
1,1,2-Trichlorotrifluoroethane
ND
ug/m3
2.8
1.79
01/12/22 18:45
76-13-1
1,2,4-Trimethylbenzene
ND
ug/m3
1.8
1.79
01/12/22 18:45
95-63-6
1,3,5-Trimethylbenzene
ND
ug/m3
1.8
1.79
01/12/22 18:45
108-67-8
Vinyl acetate
ND
ug/m3
1.3
1.79
01/12/22 18:45
108-05-4
Vinyl chloride
ND
ug/m3
0.47
1.79
01/12/22 18:45
75-01-4
m&p-Xylene
ND
ug/m3
3.2
1.79
01/12/22 18:45
179601-23-1
o-Xylene
ND
ug/m3
1.6
1.79
01/12/22 18:45
95-47-6
Date: 01/13/2022 04:54 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 18 of 44

lceAnalyircal
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Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
ANALYTICAL RESULTS
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Sample: SSV-8 Lab ID: 10592093008 Collected: 12/15/21 17:07 Received: 12/20/21 10:09 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Acetone
342
ug/m3
10.8
1.79
01/12/22 22:42
67-64-1
Benzene
2.7
ug/m3
0.58
1.79
01/12/22 22:42
71-43-2
Benzyl chloride
ND
ug/m3
4.7
1.79
01/12/22 22:42
100-44-7
Bromodichloromethane
ND
ug/m3
2.4
1.79
01/12/22 22:42
75-27-4
Bromoform
ND
ug/m3
9.4
1.79
01/12/22 22:42
75-25-2
Bromomethane
ND
ug/m3
1.4
1.79
01/12/22 22:42
74-83-9
1,3-Butadiene
ND
ug/m3
0.81
1.79
01/12/22 22:42
106-99-0
2-Butanone (MEK)
8.0
ug/m3
5.4
1.79
01/12/22 22:42
78-93-3
Carbon disulfide
ND
ug/m3
1.1
1.79
01/12/22 22:42
75-15-0
Carbon tetrachloride
ND
ug/m3
2.3
1.79
01/12/22 22:42
56-23-5
Chlorobenzene
ND
ug/m3
1.7
1.79
01/12/22 22:42
108-90-7
Chloroethane
ND
ug/m3
0.96
1.79
01/12/22 22:42
75-00-3
Chloroform
ND
ug/m3
0.89
1.79
01/12/22 22:42
67-66-3
Chloromethane
1.2
ug/m3
0.75
1.79
01/12/22 22:42
74-87-3
Cyclohexane
ND
ug/m3
3.1
1.79
01/12/22 22:42
110-82-7
Dibromochloromethane
ND
ug/m3
3.1
1.79
01/12/22 22:42
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/m3
1.4
1.79
01/12/22 22:42
106-93-4
1,2-Dichlorobenzene
ND
ug/m3
5.5
1.79
01/12/22 22:42
95-50-1
1,3-Dichlorobenzene
ND
ug/m3
5.5
1.79
01/12/22 22:42
541-73-1
1,4-Dichlorobenzene
ND
ug/m3
5.5
1.79
01/12/22 22:42
106-46-7
Dichlorodifluoromethane
2.8
ug/m3
1.8
1.79
01/12/22 22:42
75-71-8
1,1-Dichloroethane
ND
ug/m3
1.5
1.79
01/12/22 22:42
75-34-3
1,2-Dichloroethane
ND
ug/m3
1.5
1.79
01/12/22 22:42
107-06-2
1,1-Dichloroethene
ND
ug/m3
1.4
1.79
01/12/22 22:42
75-35-4
cis-1,2-Dichloroethene
ND
ug/m3
1.4
1.79
01/12/22 22:42
156-59-2
trans-1,2-Dichloroethene
ND
ug/m3
1.4
1.79
01/12/22 22:42
156-60-5
1,2-Dichloropropene
ND
ug/m3
1.7
1.79
01/12/22 22:42
78-87-5
cis-1,3-Dichloropropene
ND
ug/m3
4.1
1.79
01/12/22 22:42
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/m3
4.1
1.79
01/12/22 22:42
10061-02-6
Dichlorotetrafluoroethane
ND
ug/m3
2.5
1.79
01/12/22 22:42
76-14-2
Ethanol
4580
ug/m3
3.4
1.79
01/12/22 22:42
64-17-5
Ethyl acetate
12.3
ug/m3
1.3
1.79
01/12/22 22:42
141-78-6
Ethylbenzene
1.7
ug/m3
1.6
1.79
01/12/22 22:42
100-41-4
4-Ethyltoluene
ND
ug/m3
4.5
1.79
01/12/22 22:42
622-96-8
n-Heptane
ND
ug/m3
1.5
1.79
01/12/22 22:42
142-82-5
Hexachloro-1,3-butadiene
ND
ug/m3
9.7
1.79
01/12/22 22:42
87-68-3
n-Hexane
2.0
ug/m3
1.3
1.79
01/12/22 22:42
110-54-3
2-Hexanone
ND
ug/m3
7.4
1.79
01/12/22 22:42
591-78-6
Methylene Chloride
ND
ug/m3
6.3
1.79
01/12/22 22:42
75-09-2
4-Methyl-2-pentanone (MIBK)
ND
ug/m3
7.4
1.79
01/12/22 22:42
108-10-1
Methyl-tert-butyl ether
ND
ug/m3
6.6
1.79
01/12/22 22:42
1634-04-4
Naphthalene
ND
ug/m3
4.8
1.79
01/12/22 22:42
91-20-3
2-Propanol
15.2
ug/m3
4.5
1.79
01/12/22 22:42
67-63-0
Propylene
4.4
ug/m3
1.6
1.79
01/12/22 22:42
115-07-1
Styrene
1.7
ug/m3
1.6
1.79
01/12/22 22:42
100-42-5
1,1,2,2-Tetrachloroethane
ND
ug/m3
2.5
1.79
01/12/22 22:42
79-34-5
REPORT OF LABORATORY ANALYSIS
E
This report shall not be reproduced, except in full,
Date: 01 /13/2022 04:54 PM without the written consent of Pace Analytical Services, LLC. Page 19 of 44

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
ANALYTICAL RESULTS
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Sample: SSV-8 Lab ID: 10592093008 Collected: 12/15/21 17:07 Received: 12/20/21 10:09 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Tetrachloroethene
4.8
ug/m3
1.2
1.79
01/12/22 22:42
127-18-4
Tetrahydrofuran
1.9
ug/m3
1.1
1.79
01/12/22 22:42
109-99-9
Toluene
9.3
ug/m3
1.4
1.79
01/12/22 22:42
108-88-3
1,2,4-Trichlorobenzene
ND
ug/m3
13.5
1.79
01/12/22 22:42
120-82-1
1,1,1-Trichloroethane
ND
ug/m3
2.0
1.79
01/12/22 22:42
71-55-6
1,1,2-Trichloroethane
ND
ug/m3
0.99
1.79
01/12/22 22:42
79-00-5
Trichloroethene
ND
ug/m3
0.98
1.79
01/12/22 22:42
79-01-6
Trichlorofluoromethane
ND
ug/m3
2.0
1.79
01/12/22 22:42
75-69-4
1,1,2-Trichlorotrifluoroethane
ND
ug/m3
2.8
1.79
01/12/22 22:42
76-13-1
1,2,4-Trimethylbenzene
2.8
ug/m3
1.8
1.79
01/12/22 22:42
95-63-6
1,3,5-Trimethylbenzene
ND
ug/m3
1.8
1.79
01/12/22 22:42
108-67-8
Vinyl acetate
ND
ug/m3
1.3
1.79
01/12/22 22:42
108-05-4
Vinyl chloride
ND
ug/m3
0.47
1.79
01/12/22 22:42
75-01-4
m&p-Xylene
4.6
ug/m3
3.2
1.79
01/12/22 22:42
179601-23-1
o-Xylene
2.6
ug/m3
1.6
1.79
01/12/22 22:42
95-47-6
Date: 01/13/2022 04:54 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 20 of 44

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
ANALYTICAL RESULTS
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Sample: SSV-9 Lab ID: 10592093009 Collected: 12/15/21 11:27 Received: 12/20/21 10:09 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Acetone
771
ug/m3
339
56.1
01/13/2210:58
67-64-1
Benzene
ND
ug/m3
0.61
1.87
01/12/22 21:01
71-43-2
Benzyl chloride
ND
ug/m3
4.9
1.87
01/12/22 21:01
100-44-7
Bromodichloromethane
ND
ug/m3
2.5
1.87
01/12/22 21:01
75-27-4
Bromoform
ND
ug/m3
9.8
1.87
01/12/22 21:01
75-25-2
Bromomethane
ND
ug/m3
1.5
1.87
01/12/22 21:01
74-83-9
1,3-Butadiene
ND
ug/m3
0.84
1.87
01/12/22 21:01
106-99-0
2-Butanone (MEK)
16.6
ug/m3
5.6
1.87
01/12/22 21:01
78-93-3
Carbon disulfide
ND
ug/m3
1.2
1.87
01/12/22 21:01
75-15-0
Carbon tetrachloride
ND
ug/m3
2.4
1.87
01/12/22 21:01
56-23-5
Chlorobenzene
ND
ug/m3
1.8
1.87
01/12/22 21:01
108-90-7
Chloroethane
ND
ug/m3
1.0
1.87
01/12/22 21:01
75-00-3
Chloroform
ND
ug/m3
0.93
1.87
01/12/22 21:01
67-66-3
Chloromethane
ND
ug/m3
0.79
1.87
01/12/22 21:01
74-87-3
Cyclohexane
ND
ug/m3
3.3
1.87
01/12/22 21:01
110-82-7
Dibromochloromethane
ND
ug/m3
3.2
1.87
01/12/22 21:01
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/m3
1.5
1.87
01/12/22 21:01
106-93-4
1,2-Dichlorobenzene
ND
ug/m3
5.7
1.87
01/12/22 21:01
95-50-1
1,3-Dichlorobenzene
ND
ug/m3
5.7
1.87
01/12/22 21:01
541-73-1
1,4-Dichlorobenzene
ND
ug/m3
5.7
1.87
01/12/22 21:01
106-46-7
Dichlorodifluoromethane
2.8
ug/m3
1.9
1.87
01/12/22 21:01
75-71-8
1,1-Dichloroethane
ND
ug/m3
1.5
1.87
01/12/22 21:01
75-34-3
1,2-Dichloroethane
ND
ug/m3
1.5
1.87
01/12/22 21:01
107-06-2
1,1-Dichloroethene
ND
ug/m3
1.5
1.87
01/12/22 21:01
75-35-4
cis-1,2-Dichloroethene
ND
ug/m3
1.5
1.87
01/12/22 21:01
156-59-2
trans-1,2-Dichloroethene
ND
ug/m3
1.5
1.87
01/12/22 21:01
156-60-5
1,2-Dichloropropene
ND
ug/m3
1.8
1.87
01/12/22 21:01
78-87-5
cis-1,3-Dichloropropene
ND
ug/m3
4.3
1.87
01/12/22 21:01
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/m3
4.3
1.87
01/12/22 21:01
10061-02-6
Dichlorotetrafluoroethane
ND
ug/m3
2.7
1.87
01/12/22 21:01
76-14-2
Ethanol
24800
ug/m3
108
56.1
01/13/2210:58
64-17-5
Ethyl acetate
4.7
ug/m3
1.4
1.87
01/12/22 21:01
141-78-6
Ethylbenzene
ND
ug/m3
1.7
1.87
01/12/22 21:01
100-41-4
4-Ethyltoluene
ND
ug/m3
4.7
1.87
01/12/22 21:01
622-96-8
n-Heptane
ND
ug/m3
1.6
1.87
01/12/22 21:01
142-82-5
Hexachloro-1,3-butadiene
ND
ug/m3
10.1
1.87
01/12/22 21:01
87-68-3
n-Hexane
ND
ug/m3
1.3
1.87
01/12/22 21:01
110-54-3
2-Hexanone
ND
ug/m3
7.8
1.87
01/12/22 21:01
591-78-6
Methylene Chloride
ND
ug/m3
6.6
1.87
01/12/22 21:01
75-09-2
4-Methyl-2-pentanone (MIBK)
ND
ug/m3
7.8
1.87
01/12/22 21:01
108-10-1
Methyl-tert-butyl ether
ND
ug/m3
6.8
1.87
01/12/22 21:01
1634-04-4
Naphthalene
ND
ug/m3
5.0
1.87
01/12/22 21:01
91-20-3
2-Propanol
870
ug/m3
140
56.1
01/13/2210:58
67-63-0
Propylene
ND
ug/m3
1.6
1.87
01/12/22 21:01
115-07-1
Styrene
1.9
ug/m3
1.6
1.87
01/12/22 21:01
100-42-5
1,1,2,2-Tetrachloroethane
ND
ug/m3
2.6
1.87
01/12/22 21:01
79-34-5
REPORT OF LABORATORY ANALYSIS
E
This report shall not be reproduced, except in full,
Date: 01 /13/2022 04:54 PM without the written consent of Pace Analytical Services, LLC. Page 21 of 44

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
ANALYTICAL RESULTS
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Sample: SSV-9 Lab ID: 10592093009 Collected: 12/15/21 11:27 Received: 12/20/21 10:09 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Tetrachloroethene
130
ug/m3
1.3
1.87
01/12/22 21:01
127-18-4
Tetrahydrofuran
1.9
ug/m3
1.1
1.87
01/12/22 21:01
109-99-9
Toluene
6.8
ug/m3
1.4
1.87
01/12/22 21:01
108-88-3
1,2,4-Trichlorobenzene
ND
ug/m3
14.1
1.87
01/12/22 21:01
120-82-1
1,1,1-Trichloroethane
ND
ug/m3
2.1
1.87
01/12/22 21:01
71-55-6
1,1,2-Trichloroethane
ND
ug/m3
1.0
1.87
01/12/22 21:01
79-00-5
Trichloroethene
ND
ug/m3
1.0
1.87
01/12/22 21:01
79-01-6
Trichlorofluoromethane
29.7
ug/m3
2.1
1.87
01/12/22 21:01
75-69-4
1,1,2-Trichlorotrifluoroethane
ND
ug/m3
2.9
1.87
01/12/22 21:01
76-13-1
1,2,4-Trimethylbenzene
18.4
ug/m3
1.9
1.87
01/12/22 21:01
95-63-6
1,3,5-Trimethylbenzene
5.1
ug/m3
1.9
1.87
01/12/22 21:01
108-67-8
Vinyl acetate
ND
ug/m3
1.3
1.87
01/12/22 21:01
108-05-4
Vinyl chloride
ND
ug/m3
0.49
1.87
01/12/22 21:01
75-01-4
m&p-Xylene
4.1
ug/m3
3.3
1.87
01/12/22 21:01
179601-23-1
o-Xylene
3.1
ug/m3
1.7
1.87
01/12/22 21:01
95-47-6
Date: 01/13/2022 04:54 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 22 of 44

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
ANALYTICAL RESULTS
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Sample: SSV-10 Lab ID: 10592093010 Collected: 12/15/21 14:07 Received: 12/20/21 10:09 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Acetone
494
ug/m3
11.3
1.87
01/12/22 21:35
67-64-1
Benzene
ND
ug/m3
0.61
1.87
01/12/22 21:35
71-43-2
Benzyl chloride
ND
ug/m3
4.9
1.87
01/12/22 21:35
100-44-7
Bromodichloromethane
ND
ug/m3
2.5
1.87
01/12/22 21:35
75-27-4
Bromoform
ND
ug/m3
9.8
1.87
01/12/22 21:35
75-25-2
Bromomethane
ND
ug/m3
1.5
1.87
01/12/22 21:35
74-83-9
1,3-Butadiene
ND
ug/m3
0.84
1.87
01/12/22 21:35
106-99-0
2-Butanone (MEK)
8.9
ug/m3
5.6
1.87
01/12/22 21:35
78-93-3
Carbon disulfide
3.1
ug/m3
1.2
1.87
01/12/22 21:35
75-15-0
Carbon tetrachloride
ND
ug/m3
2.4
1.87
01/12/22 21:35
56-23-5
Chlorobenzene
ND
ug/m3
1.8
1.87
01/12/22 21:35
108-90-7
Chloroethane
ND
ug/m3
1.0
1.87
01/12/22 21:35
75-00-3
Chloroform
1.9
ug/m3
0.93
1.87
01/12/22 21:35
67-66-3
Chloromethane
0.81
ug/m3
0.79
1.87
01/12/22 21:35
74-87-3
Cyclohexane
ND
ug/m3
3.3
1.87
01/12/22 21:35
110-82-7
Dibromochloromethane
ND
ug/m3
3.2
1.87
01/12/22 21:35
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/m3
1.5
1.87
01/12/22 21:35
106-93-4
1,2-Dichlorobenzene
ND
ug/m3
5.7
1.87
01/12/22 21:35
95-50-1
1,3-Dichlorobenzene
ND
ug/m3
5.7
1.87
01/12/22 21:35
541-73-1
1,4-Dichlorobenzene
ND
ug/m3
5.7
1.87
01/12/22 21:35
106-46-7
Dichlorodifluoromethane
2.8
ug/m3
1.9
1.87
01/12/22 21:35
75-71-8
1,1-Dichloroethane
ND
ug/m3
1.5
1.87
01/12/22 21:35
75-34-3
1,2-Dichloroethane
ND
ug/m3
1.5
1.87
01/12/22 21:35
107-06-2
1,1-Dichloroethene
ND
ug/m3
1.5
1.87
01/12/22 21:35
75-35-4
cis-1,2-Dichloroethene
ND
ug/m3
1.5
1.87
01/12/22 21:35
156-59-2
trans-1,2-Dichloroethene
ND
ug/m3
1.5
1.87
01/12/22 21:35
156-60-5
1,2-Dichloropropene
ND
ug/m3
1.8
1.87
01/12/22 21:35
78-87-5
cis-1,3-Dichloropropene
ND
ug/m3
4.3
1.87
01/12/22 21:35
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/m3
4.3
1.87
01/12/22 21:35
10061-02-6
Dichlorotetrafluoroethane
ND
ug/m3
2.7
1.87
01/12/22 21:35
76-14-2
Ethanol
22700
ug/m3
108
56.1
01/13/2211:29
64-17-5
Ethyl acetate
17.4
ug/m3
1.4
1.87
01/12/22 21:35
141-78-6
Ethylbenzene
ND
ug/m3
1.7
1.87
01/12/22 21:35
100-41-4
4-Ethyltoluene
ND
ug/m3
4.7
1.87
01/12/22 21:35
622-96-8
n-Heptane
ND
ug/m3
1.6
1.87
01/12/22 21:35
142-82-5
Hexachloro-1,3-butadiene
ND
ug/m3
10.1
1.87
01/12/22 21:35
87-68-3
n-Hexane
ND
ug/m3
1.3
1.87
01/12/22 21:35
110-54-3
2-Hexanone
ND
ug/m3
7.8
1.87
01/12/22 21:35
591-78-6
Methylene Chloride
ND
ug/m3
6.6
1.87
01/12/22 21:35
75-09-2
4-Methyl-2-pentanone (MIBK)
ND
ug/m3
7.8
1.87
01/12/22 21:35
108-10-1
Methyl-tert-butyl ether
ND
ug/m3
6.8
1.87
01/12/22 21:35
1634-04-4
Naphthalene
ND
ug/m3
5.0
1.87
01/12/22 21:35
91-20-3
2-Propanol
2690
ug/m3
140
56.1
01/13/2211:29
67-63-0
Propylene
ND
ug/m3
1.6
1.87
01/12/22 21:35
115-07-1
Styrene
ND
ug/m3
1.6
1.87
01/12/22 21:35
100-42-5
1,1,2,2-Tetrachloroethane
ND
ug/m3
2.6
1.87
01/12/22 21:35
79-34-5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 01 /13/2022 04:54 PM without the written consent of Pace Analytical Services, LLC. Page 23 of 44

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
ANALYTICAL RESULTS
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Sample: SSV-10 Lab ID: 10592093010 Collected: 12/15/21 14:07 Received: 12/20/21 10:09 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Tetrachloroethene
177
ug/m3
1.3
1.87
01/12/22 21:35
127-18-4
Tetrahydrofuran
ND
ug/m3
1.1
1.87
01/12/22 21:35
109-99-9
Toluene
6.2
ug/m3
1.4
1.87
01/12/22 21:35
108-88-3
1,2,4-Trichlorobenzene
ND
ug/m3
14.1
1.87
01/12/22 21:35
120-82-1
1,1,1-Trichloroethane
ND
ug/m3
2.1
1.87
01/12/22 21:35
71-55-6
1,1,2-Trichloroethane
ND
ug/m3
1.0
1.87
01/12/22 21:35
79-00-5
Trichloroethene
ND
ug/m3
1.0
1.87
01/12/22 21:35
79-01-6
Trichlorofluoromethane
38.5
ug/m3
2.1
1.87
01/12/22 21:35
75-69-4
1,1,2-Trichlorotrifluoroethane
ND
ug/m3
2.9
1.87
01/12/22 21:35
76-13-1
1,2,4-Trimethylbenzene
5.2
ug/m3
1.9
1.87
01/12/22 21:35
95-63-6
1,3,5-Trimethylbenzene
ND
ug/m3
1.9
1.87
01/12/22 21:35
108-67-8
Vinyl acetate
ND
ug/m3
1.3
1.87
01/12/22 21:35
108-05-4
Vinyl chloride
ND
ug/m3
0.49
1.87
01/12/22 21:35
75-01-4
m&p-Xylene
ND
ug/m3
3.3
1.87
01/12/22 21:35
179601-23-1
o-Xylene
2.4
ug/m3
1.7
1.87
01/12/22 21:35
95-47-6
Date: 01/13/2022 04:54 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 24 of 44

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
ANALYTICAL RESULTS
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Sample: SSV-11 Lab ID: 10592093011 Collected: 12/15/21 15:20 Received: 12/20/21 10:09 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Acetone
40.5
ug/m3
11.8
1.96
01/12/22 19:53
67-64-1
Benzene
ND
ug/m3
0.64
1.96
01/12/22 19:53
71-43-2
Benzyl chloride
ND
ug/m3
5.2
1.96
01/12/22 19:53
100-44-7
Bromodichloromethane
ND
ug/m3
2.7
1.96
01/12/22 19:53
75-27-4
Bromoform
ND
ug/m3
10.3
1.96
01/12/22 19:53
75-25-2
Bromomethane
ND
ug/m3
1.5
1.96
01/12/22 19:53
74-83-9
1,3-Butadiene
ND
ug/m3
0.88
1.96
01/12/22 19:53
106-99-0
2-Butanone (MEK)
ND
ug/m3
5.9
1.96
01/12/22 19:53
78-93-3
Carbon disulfide
ND
ug/m3
1.2
1.96
01/12/22 19:53
75-15-0
Carbon tetrachloride
ND
ug/m3
2.5
1.96
01/12/22 19:53
56-23-5
Chlorobenzene
ND
ug/m3
1.8
1.96
01/12/22 19:53
108-90-7
Chloroethane
ND
ug/m3
1.1
1.96
01/12/22 19:53
75-00-3
Chloroform
1.7
ug/m3
0.97
1.96
01/12/22 19:53
67-66-3
Chloromethane
ND
ug/m3
0.82
1.96
01/12/22 19:53
74-87-3
Cyclohexane
ND
ug/m3
3.4
1.96
01/12/22 19:53
110-82-7
Dibromochloromethane
ND
ug/m3
3.4
1.96
01/12/22 19:53
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/m3
1.5
1.96
01/12/22 19:53
106-93-4
1,2-Dichlorobenzene
ND
ug/m3
6.0
1.96
01/12/22 19:53
95-50-1
1,3-Dichlorobenzene
ND
ug/m3
6.0
1.96
01/12/22 19:53
541-73-1
1,4-Dichlorobenzene
ND
ug/m3
6.0
1.96
01/12/22 19:53
106-46-7
Dichlorodifluoromethane
2.6
ug/m3
2.0
1.96
01/12/22 19:53
75-71-8
1,1-Dichloroethane
ND
ug/m3
1.6
1.96
01/12/22 19:53
75-34-3
1,2-Dichloroethane
ND
ug/m3
1.6
1.96
01/12/22 19:53
107-06-2
1,1-Dichloroethene
ND
ug/m3
1.6
1.96
01/12/22 19:53
75-35-4
cis-1,2-Dichloroethene
47.3
ug/m3
1.6
1.96
01/12/22 19:53
156-59-2
trans-1,2-Dichloroethene
2.6
ug/m3
1.6
1.96
01/12/22 19:53
156-60-5
1,2-Dichloropropene
ND
ug/m3
1.8
1.96
01/12/22 19:53
78-87-5
cis-1,3-Dichloropropene
ND
ug/m3
4.5
1.96
01/12/22 19:53
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/m3
4.5
1.96
01/12/22 19:53
10061-02-6
Dichlorotetrafluoroethane
ND
ug/m3
2.8
1.96
01/12/22 19:53
76-14-2
Ethanol
748
ug/m3
3.8
1.96
01/12/22 19:53
64-17-5
Ethyl acetate
ND
ug/m3
1.4
1.96
01/12/22 19:53
141-78-6
Ethylbenzene
ND
ug/m3
1.7
1.96
01/12/22 19:53
100-41-4
4-Ethyltoluene
ND
ug/m3
4.9
1.96
01/12/22 19:53
622-96-8
n-Heptane
ND
ug/m3
1.6
1.96
01/12/22 19:53
142-82-5
Hexachloro-1,3-butadiene
ND
ug/m3
10.6
1.96
01/12/22 19:53
87-68-3
n-Hexane
ND
ug/m3
1.4
1.96
01/12/22 19:53
110-54-3
2-Hexanone
ND
ug/m3
8.2
1.96
01/12/22 19:53
591-78-6
Methylene Chloride
ND
ug/m3
6.9
1.96
01/12/22 19:53
75-09-2
4-Methyl-2-pentanone (MIBK)
ND
ug/m3
8.2
1.96
01/12/22 19:53
108-10-1
Methyl-tert-butyl ether
ND
ug/m3
7.2
1.96
01/12/22 19:53
1634-04-4
Naphthalene
ND
ug/m3
5.2
1.96
01/12/22 19:53
91-20-3
2-Propanol
23.4
ug/m3
4.9
1.96
01/12/22 19:53
67-63-0
Propylene
ND
ug/m3
1.7
1.96
01/12/22 19:53
115-07-1
Styrene
ND
ug/m3
1.7
1.96
01/12/22 19:53
100-42-5
1,1,2,2-Tetrachloroethane
ND
ug/m3
2.7
1.96
01/12/22 19:53
79-34-5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 01 /13/2022 04:54 PM without the written consent of Pace Analytical Services, LLC. Page 25 of 44

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
ANALYTICAL RESULTS
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Sample: SSV-11 Lab ID: 10592093011 Collected: 12/15/21 15:20 Received: 12/20/21 10:09 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Tetrachloroethene
46.5
ug/m3
1.4
1.96
01/12/22 19:53
127-18-4
Tetrahydrofuran
ND
ug/m3
1.2
1.96
01/12/22 19:53
109-99-9
Toluene
ND
ug/m3
1.5
1.96
01/12/22 19:53
108-88-3
1,2,4-Trichlorobenzene
ND
ug/m3
14.8
1.96
01/12/22 19:53
120-82-1
1,1,1-Trichloroethane
ND
ug/m3
2.2
1.96
01/12/22 19:53
71-55-6
1,1,2-Trichloroethane
ND
ug/m3
1.1
1.96
01/12/22 19:53
79-00-5
Trichloroethene
2.3
ug/m3
1.1
1.96
01/12/22 19:53
79-01-6
Trichlorofluoromethane
2.6
ug/m3
2.2
1.96
01/12/22 19:53
75-69-4
1,1,2-Trichlorotrifluoroethane
ND
ug/m3
3.1
1.96
01/12/22 19:53
76-13-1
1,2,4-Trimethylbenzene
ND
ug/m3
2.0
1.96
01/12/22 19:53
95-63-6
1,3,5-Trimethylbenzene
ND
ug/m3
2.0
1.96
01/12/22 19:53
108-67-8
Vinyl acetate
ND
ug/m3
1.4
1.96
01/12/22 19:53
108-05-4
Vinyl chloride
ND
ug/m3
0.51
1.96
01/12/22 19:53
75-01-4
m&p-Xylene
ND
ug/m3
3.5
1.96
01/12/22 19:53
179601-23-1
o-Xylene
ND
ug/m3
1.7
1.96
01/12/22 19:53
95-47-6
Date: 01/13/2022 04:54 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 26 of 44

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
ANALYTICAL RESULTS
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Sample: SSV-11 DUP Lab ID: 10592093012 Collected: 12/15/21 15:20 Received: 12/20/21 10:09 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Acetone
64.0
ug/m3
11.8
1.96
01/12/22 22:08
67-64-1
Benzene
ND
ug/m3
0.64
1.96
01/12/22 22:08
71-43-2
Benzyl chloride
ND
ug/m3
5.2
1.96
01/12/22 22:08
100-44-7
Bromodichloromethane
ND
ug/m3
2.7
1.96
01/12/22 22:08
75-27-4
Bromoform
ND
ug/m3
10.3
1.96
01/12/22 22:08
75-25-2
Bromomethane
ND
ug/m3
1.5
1.96
01/12/22 22:08
74-83-9
1,3-Butadiene
ND
ug/m3
0.88
1.96
01/12/22 22:08
106-99-0
2-Butanone (MEK)
9.7
ug/m3
5.9
1.96
01/12/22 22:08
78-93-3
Carbon disulfide
ND
ug/m3
1.2
1.96
01/12/22 22:08
75-15-0
Carbon tetrachloride
ND
ug/m3
2.5
1.96
01/12/22 22:08
56-23-5
Chlorobenzene
ND
ug/m3
1.8
1.96
01/12/22 22:08
108-90-7
Chloroethane
ND
ug/m3
1.1
1.96
01/12/22 22:08
75-00-3
Chloroform
1.9
ug/m3
0.97
1.96
01/12/22 22:08
67-66-3
Chloromethane
ND
ug/m3
0.82
1.96
01/12/22 22:08
74-87-3
Cyclohexane
ND
ug/m3
3.4
1.96
01/12/22 22:08
110-82-7
Dibromochloromethane
ND
ug/m3
3.4
1.96
01/12/22 22:08
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/m3
1.5
1.96
01/12/22 22:08
106-93-4
1,2-Dichlorobenzene
ND
ug/m3
6.0
1.96
01/12/22 22:08
95-50-1
1,3-Dichlorobenzene
ND
ug/m3
6.0
1.96
01/12/22 22:08
541-73-1
1,4-Dichlorobenzene
ND
ug/m3
6.0
1.96
01/12/22 22:08
106-46-7
Dichlorodifluoromethane
2.9
ug/m3
2.0
1.96
01/12/22 22:08
75-71-8
1,1-Dichloroethane
ND
ug/m3
1.6
1.96
01/12/22 22:08
75-34-3
1,2-Dichloroethane
ND
ug/m3
1.6
1.96
01/12/22 22:08
107-06-2
1,1-Dichloroethene
ND
ug/m3
1.6
1.96
01/12/22 22:08
75-35-4
cis-1,2-Dichloroethene
52.7
ug/m3
1.6
1.96
01/12/22 22:08
156-59-2
trans-1,2-Dichloroethene
2.8
ug/m3
1.6
1.96
01/12/22 22:08
156-60-5
1,2-Dichloropropene
ND
ug/m3
1.8
1.96
01/12/22 22:08
78-87-5
cis-1,3-Dichloropropene
ND
ug/m3
4.5
1.96
01/12/22 22:08
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/m3
4.5
1.96
01/12/22 22:08
10061-02-6
Dichlorotetrafluoroethane
ND
ug/m3
2.8
1.96
01/12/22 22:08
76-14-2
Ethanol
873
ug/m3
3.8
1.96
01/12/22 22:08
64-17-5
Ethyl acetate
ND
ug/m3
1.4
1.96
01/12/22 22:08
141-78-6
Ethylbenzene
ND
ug/m3
1.7
1.96
01/12/22 22:08
100-41-4
4-Ethyltoluene
ND
ug/m3
4.9
1.96
01/12/22 22:08
622-96-8
n-Heptane
ND
ug/m3
1.6
1.96
01/12/22 22:08
142-82-5
Hexachloro-1,3-butadiene
ND
ug/m3
10.6
1.96
01/12/22 22:08
87-68-3
n-Hexane
1.7
ug/m3
1.4
1.96
01/12/22 22:08
110-54-3
2-Hexanone
ND
ug/m3
8.2
1.96
01/12/22 22:08
591-78-6
Methylene Chloride
ND
ug/m3
6.9
1.96
01/12/22 22:08
75-09-2
4-Methyl-2-pentanone (MIBK)
ND
ug/m3
8.2
1.96
01/12/22 22:08
108-10-1
Methyl-tert-butyl ether
ND
ug/m3
7.2
1.96
01/12/22 22:08
1634-04-4
Naphthalene
ND
ug/m3
5.2
1.96
01/12/22 22:08
91-20-3
2-Propanol
28.9
ug/m3
4.9
1.96
01/12/22 22:08
67-63-0
Propylene
ND
ug/m3
1.7
1.96
01/12/22 22:08
115-07-1
Styrene
ND
ug/m3
1.7
1.96
01/12/22 22:08
100-42-5
1,1,2,2-Tetrachloroethane
ND
ug/m3
2.7
1.96
01/12/22 22:08
79-34-5
REPORT OF LABORATORY ANALYSIS
E
This report shall not be reproduced, except in full,
Date: 01 /13/2022 04:54 PM without the written consent of Pace Analytical Services, LLC. Page 27 of 44

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
ANALYTICAL RESULTS
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Sample: SSV-11 DUP Lab ID: 10592093012 Collected: 12/15/21 15:20 Received: 12/20/21 10:09 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Tetrachloroethene
52.9
ug/m3
1.4
1.96
01/12/22 22:08
127-18-4
Tetrahydrofuran
ND
ug/m3
1.2
1.96
01/12/22 22:08
109-99-9
Toluene
ND
ug/m3
1.5
1.96
01/12/22 22:08
108-88-3
1,2,4-Trichlorobenzene
ND
ug/m3
14.8
1.96
01/12/22 22:08
120-82-1
1,1,1-Trichloroethane
ND
ug/m3
2.2
1.96
01/12/22 22:08
71-55-6
1,1,2-Trichloroethane
ND
ug/m3
1.1
1.96
01/12/22 22:08
79-00-5
Trichloroethene
2.5
ug/m3
1.1
1.96
01/12/22 22:08
79-01-6
Trichlorofluoromethane
2.5
ug/m3
2.2
1.96
01/12/22 22:08
75-69-4
1,1,2-Trichlorotrifluoroethane
ND
ug/m3
3.1
1.96
01/12/22 22:08
76-13-1
1,2,4-Trimethylbenzene
ND
ug/m3
2.0
1.96
01/12/22 22:08
95-63-6
1,3,5-Trimethylbenzene
ND
ug/m3
2.0
1.96
01/12/22 22:08
108-67-8
Vinyl acetate
ND
ug/m3
1.4
1.96
01/12/22 22:08
108-05-4
Vinyl chloride
ND
ug/m3
0.51
1.96
01/12/22 22:08
75-01-4
m&p-Xylene
ND
ug/m3
3.5
1.96
01/12/22 22:08
179601-23-1
o-Xylene
ND
ug/m3
1.7
1.96
01/12/22 22:08
95-47-6
Date: 01/13/2022 04:54 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 28 of 44

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
ANALYTICAL RESULTS
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Sample: CS-12 Lab ID: 10592093013 Collected: 12/15/21 16:55 Received: 12/20/21 10:09 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Acetone
ND
ug/m3
11.3
1.87
01/12/22 20:27
67-64-1
Benzene
1.5
ug/m3
0.61
1.87
01/12/22 20:27
71-43-2
Benzyl chloride
ND
ug/m3
4.9
1.87
01/12/22 20:27
100-44-7
Bromodichloromethane
ND
ug/m3
2.5
1.87
01/12/22 20:27
75-27-4
Bromoform
ND
ug/m3
9.8
1.87
01/12/22 20:27
75-25-2
Bromomethane
ND
ug/m3
1.5
1.87
01/12/22 20:27
74-83-9
1,3-Butadiene
ND
ug/m3
0.84
1.87
01/12/22 20:27
106-99-0
2-Butanone (MEK)
ND
ug/m3
5.6
1.87
01/12/22 20:27
78-93-3
Carbon disulfide
ND
ug/m3
1.2
1.87
01/12/22 20:27
75-15-0
Carbon tetrachloride
ND
ug/m3
2.4
1.87
01/12/22 20:27
56-23-5
Chlorobenzene
ND
ug/m3
1.8
1.87
01/12/22 20:27
108-90-7
Chloroethane
ND
ug/m3
1.0
1.87
01/12/22 20:27
75-00-3
Chloroform
ND
ug/m3
0.93
1.87
01/12/22 20:27
67-66-3
Chloromethane
1.2
ug/m3
0.79
1.87
01/12/22 20:27
74-87-3
Cyclohexane
ND
ug/m3
3.3
1.87
01/12/22 20:27
110-82-7
Dibromochloromethane
ND
ug/m3
3.2
1.87
01/12/22 20:27
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/m3
1.5
1.87
01/12/22 20:27
106-93-4
1,2-Dichlorobenzene
ND
ug/m3
5.7
1.87
01/12/22 20:27
95-50-1
1,3-Dichlorobenzene
ND
ug/m3
5.7
1.87
01/12/22 20:27
541-73-1
1,4-Dichlorobenzene
ND
ug/m3
5.7
1.87
01/12/22 20:27
106-46-7
Dichlorodifluoromethane
3.0
ug/m3
1.9
1.87
01/12/22 20:27
75-71-8
1,1-Dichloroethane
ND
ug/m3
1.5
1.87
01/12/22 20:27
75-34-3
1,2-Dichloroethane
ND
ug/m3
1.5
1.87
01/12/22 20:27
107-06-2
1,1-Dichloroethene
ND
ug/m3
1.5
1.87
01/12/22 20:27
75-35-4
cis-1,2-Dichloroethene
ND
ug/m3
1.5
1.87
01/12/22 20:27
156-59-2
trans-1,2-Dichloroethene
ND
ug/m3
1.5
1.87
01/12/22 20:27
156-60-5
1,2-Dichloropropene
ND
ug/m3
1.8
1.87
01/12/22 20:27
78-87-5
cis-1,3-Dichloropropene
ND
ug/m3
4.3
1.87
01/12/22 20:27
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/m3
4.3
1.87
01/12/22 20:27
10061-02-6
Dichlorotetrafluoroethane
ND
ug/m3
2.7
1.87
01/12/22 20:27
76-14-2
Ethanol
33.2
ug/m3
3.6
1.87
01/12/22 20:27
64-17-5
Ethyl acetate
ND
ug/m3
1.4
1.87
01/12/22 20:27
141-78-6
Ethylbenzene
ND
ug/m3
1.7
1.87
01/12/22 20:27
100-41-4
4-Ethyltoluene
ND
ug/m3
4.7
1.87
01/12/22 20:27
622-96-8
n-Heptane
ND
ug/m3
1.6
1.87
01/12/22 20:27
142-82-5
Hexachloro-1,3-butadiene
ND
ug/m3
10.1
1.87
01/12/22 20:27
87-68-3
n-Hexane
ND
ug/m3
1.3
1.87
01/12/22 20:27
110-54-3
2-Hexanone
ND
ug/m3
7.8
1.87
01/12/22 20:27
591-78-6
Methylene Chloride
ND
ug/m3
6.6
1.87
01/12/22 20:27
75-09-2
4-Methyl-2-pentanone (MIBK)
ND
ug/m3
7.8
1.87
01/12/22 20:27
108-10-1
Methyl-tert-butyl ether
ND
ug/m3
6.8
1.87
01/12/22 20:27
1634-04-4
Naphthalene
ND
ug/m3
5.0
1.87
01/12/22 20:27
91-20-3
2-Propanol
ND
ug/m3
4.7
1.87
01/12/22 20:27
67-63-0
Propylene
ND
ug/m3
1.6
1.87
01/12/22 20:27
115-07-1
Styrene
ND
ug/m3
1.6
1.87
01/12/22 20:27
100-42-5
1,1,2,2-Tetrachloroethane
ND
ug/m3
2.6
1.87
01/12/22 20:27
79-34-5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 01 /13/2022 04:54 PM without the written consent of Pace Analytical Services, LLC. Page 29 of 44

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
ANALYTICAL RESULTS
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Sample: CS-12 Lab ID: 10592093013 Collected: 12/15/21 16:55 Received: 12/20/21 10:09 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Tetrachloroethene
381
ug/m3
1.3
1.87
01/12/22 20:27
127-18-4
Tetrahydrofuran
ND
ug/m3
1.1
1.87
01/12/22 20:27
109-99-9
Toluene
2.0
ug/m3
1.4
1.87
01/12/22 20:27
108-88-3
1,2,4-Trichlorobenzene
ND
ug/m3
14.1
1.87
01/12/22 20:27
120-82-1
1,1,1-Trichloroethane
ND
ug/m3
2.1
1.87
01/12/22 20:27
71-55-6
1,1,2-Trichloroethane
ND
ug/m3
1.0
1.87
01/12/22 20:27
79-00-5
Trichloroethene
ND
ug/m3
1.0
1.87
01/12/22 20:27
79-01-6
Trichlorofluoromethane
ND
ug/m3
2.1
1.87
01/12/22 20:27
75-69-4
1,1,2-Trichlorotrifluoroethane
ND
ug/m3
2.9
1.87
01/12/22 20:27
76-13-1
1,2,4-Trimethylbenzene
ND
ug/m3
1.9
1.87
01/12/22 20:27
95-63-6
1,3,5-Trimethylbenzene
ND
ug/m3
1.9
1.87
01/12/22 20:27
108-67-8
Vinyl acetate
ND
ug/m3
1.3
1.87
01/12/22 20:27
108-05-4
Vinyl chloride
ND
ug/m3
0.49
1.87
01/12/22 20:27
75-01-4
m&p-Xylene
ND
ug/m3
3.3
1.87
01/12/22 20:27
179601-23-1
o-Xylene
ND
ug/m3
1.7
1.87
01/12/22 20:27
95-47-6
Date: 01/13/2022 04:54 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 30 of 44

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
ANALYTICAL RESULTS
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Sample: CS-13 Lab ID: 10592093014 Collected: 12/15/21 16:55 Received: 12/20/21 10:09 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Acetone
ND
ug/m3
11.6
1.92
01/12/22 23:16
67-64-1
Benzene
1.5
ug/m3
0.62
1.92
01/12/22 23:16
71-43-2
Benzyl chloride
ND
ug/m3
5.0
1.92
01/12/22 23:16
100-44-7
Bromodichloromethane
ND
ug/m3
2.6
1.92
01/12/22 23:16
75-27-4
Bromoform
ND
ug/m3
10.1
1.92
01/12/22 23:16
75-25-2
Bromomethane
ND
ug/m3
1.5
1.92
01/12/22 23:16
74-83-9
1,3-Butadiene
ND
ug/m3
0.86
1.92
01/12/22 23:16
106-99-0
2-Butanone (MEK)
ND
ug/m3
5.8
1.92
01/12/22 23:16
78-93-3
Carbon disulfide
ND
ug/m3
1.2
1.92
01/12/22 23:16
75-15-0
Carbon tetrachloride
ND
ug/m3
2.5
1.92
01/12/22 23:16
56-23-5
Chlorobenzene
ND
ug/m3
1.8
1.92
01/12/22 23:16
108-90-7
Chloroethane
ND
ug/m3
1.0
1.92
01/12/22 23:16
75-00-3
Chloroform
ND
ug/m3
0.95
1.92
01/12/22 23:16
67-66-3
Chloromethane
1.0
ug/m3
0.81
1.92
01/12/22 23:16
74-87-3
Cyclohexane
ND
ug/m3
3.4
1.92
01/12/22 23:16
110-82-7
Dibromochloromethane
ND
ug/m3
3.3
1.92
01/12/22 23:16
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/m3
1.5
1.92
01/12/22 23:16
106-93-4
1,2-Dichlorobenzene
ND
ug/m3
5.9
1.92
01/12/22 23:16
95-50-1
1,3-Dichlorobenzene
ND
ug/m3
5.9
1.92
01/12/22 23:16
541-73-1
1,4-Dichlorobenzene
ND
ug/m3
5.9
1.92
01/12/22 23:16
106-46-7
Dichlorodifluoromethane
2.8
ug/m3
1.9
1.92
01/12/22 23:16
75-71-8
1,1-Dichloroethane
ND
ug/m3
1.6
1.92
01/12/22 23:16
75-34-3
1,2-Dichloroethane
ND
ug/m3
1.6
1.92
01/12/22 23:16
107-06-2
1,1-Dichloroethene
ND
ug/m3
1.5
1.92
01/12/22 23:16
75-35-4
cis-1,2-Dichloroethene
ND
ug/m3
1.5
1.92
01/12/22 23:16
156-59-2
trans-1,2-Dichloroethene
ND
ug/m3
1.5
1.92
01/12/22 23:16
156-60-5
1,2-Dichloropropene
ND
ug/m3
1.8
1.92
01/12/22 23:16
78-87-5
cis-1,3-Dichloropropene
ND
ug/m3
4.4
1.92
01/12/22 23:16
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/m3
4.4
1.92
01/12/22 23:16
10061-02-6
Dichlorotetrafluoroethane
ND
ug/m3
2.7
1.92
01/12/22 23:16
76-14-2
Ethanol
74.8
ug/m3
3.7
1.92
01/12/22 23:16
64-17-5
Ethyl acetate
ND
ug/m3
1.4
1.92
01/12/22 23:16
141-78-6
Ethylbenzene
ND
ug/m3
1.7
1.92
01/12/22 23:16
100-41-4
4-Ethyltoluene
ND
ug/m3
4.8
1.92
01/12/22 23:16
622-96-8
n-Heptane
ND
ug/m3
1.6
1.92
01/12/22 23:16
142-82-5
Hexachloro-1,3-butadiene
ND
ug/m3
10.4
1.92
01/12/22 23:16
87-68-3
n-Hexane
ND
ug/m3
1.4
1.92
01/12/22 23:16
110-54-3
2-Hexanone
ND
ug/m3
8.0
1.92
01/12/22 23:16
591-78-6
Methylene Chloride
ND
ug/m3
6.8
1.92
01/12/22 23:16
75-09-2
4-Methyl-2-pentanone (MIBK)
ND
ug/m3
8.0
1.92
01/12/22 23:16
108-10-1
Methyl-tert-butyl ether
ND
ug/m3
7.0
1.92
01/12/22 23:16
1634-04-4
Naphthalene
ND
ug/m3
5.1
1.92
01/12/22 23:16
91-20-3
2-Propanol
ND
ug/m3
4.8
1.92
01/12/22 23:16
67-63-0
Propylene
ND
ug/m3
1.7
1.92
01/12/22 23:16
115-07-1
Styrene
ND
ug/m3
1.7
1.92
01/12/22 23:16
100-42-5
1,1,2,2-Tetrachloroethane
ND
ug/m3
2.7
1.92
01/12/22 23:16
79-34-5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 01 /13/2022 04:54 PM without the written consent of Pace Analytical Services, LLC. Page 31 of 44

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
ANALYTICAL RESULTS
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Sample: CS-13 Lab ID: 10592093014 Collected: 12/15/21 16:55 Received: 12/20/21 10:09 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Tetrachloroethene
76.0
ug/m3
1.3
1.92
01/12/22 23:16
127-18-4
Tetrahydrofuran
ND
ug/m3
1.2
1.92
01/12/22 23:16
109-99-9
Toluene
2.2
ug/m3
1.5
1.92
01/12/22 23:16
108-88-3
1,2,4-Trichlorobenzene
ND
ug/m3
14.5
1.92
01/12/22 23:16
120-82-1
1,1,1-Trichloroethane
ND
ug/m3
2.1
1.92
01/12/22 23:16
71-55-6
1,1,2-Trichloroethane
ND
ug/m3
1.1
1.92
01/12/22 23:16
79-00-5
Trichloroethene
ND
ug/m3
1.0
1.92
01/12/22 23:16
79-01-6
Trichlorofluoromethane
ND
ug/m3
2.2
1.92
01/12/22 23:16
75-69-4
1,1,2-Trichlorotrifluoroethane
ND
ug/m3
3.0
1.92
01/12/22 23:16
76-13-1
1,2,4-Trimethylbenzene
ND
ug/m3
1.9
1.92
01/12/22 23:16
95-63-6
1,3,5-Trimethylbenzene
ND
ug/m3
1.9
1.92
01/12/22 23:16
108-67-8
Vinyl acetate
ND
ug/m3
1.4
1.92
01/12/22 23:16
108-05-4
Vinyl chloride
ND
ug/m3
0.50
1.92
01/12/22 23:16
75-01-4
m&p-Xylene
ND
ug/m3
3.4
1.92
01/12/22 23:16
179601-23-1
o-Xylene
ND
ug/m3
1.7
1.92
01/12/22 23:16
95-47-6
Date: 01/13/2022 04:54 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 32 of 44

lV11.1 Analytical
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Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
QUALITY CONTROL DATA
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
QC Batch: 793334 Analysis Method: TO-15
QC Batch Method: TO-15 Analysis Description: T015 MSV AIR Low Level
Laboratory: Pace Analytical Services - Minneapolis
Associated Lab Samples: 10592093001, 10592093002, 10592093003, 10592093004, 10592093005, 10592093006, 10592093007,
10592093008,10592093009,10592093010,10592093011,10592093012,10592093013,10592093014
METHOD BLANK: 4219896 Matrix: Air
Associated Lab Samples: 10592093001, 10592093002, 10592093003, 10592093004, 10592093005, 10592093006, 10592093007,
10592093008,10592093009,10592093010,10592093011,10592093012,10592093013,10592093014
Blank Reporting
Parameter Units Result Limit Analyzed Qualifiers
1,1,1-Trichloroethane
ug/m3
ND
1.1
01/12/22 10:10
1,1,2,2-Tetrachloroethane
ug/m3
ND
1.4
01/12/22 10:10
1,1,2-Trichloroethane
ug/m3
ND
0.56
01/12/22 10:10
1,1,2-Trichlorotrifluoroethane
ug/m3
ND
1.6
01/12/22 10:10
1,1-Dichloroethane
ug/m3
ND
0.82
01/12/22 10:10
1,1-Dichloroethene
ug/m3
ND
0.81
01/12/22 10:10
1,2,4-Trichlorobenzene
ug/m3
ND
7.5
01/12/22 10:10
1,2,4-Trimethylbenzene
ug/m3
ND
1.0
01/12/22 10:10
1,2-Dibromoethane (EDB)
ug/m3
ND
0.78
01/12/22 10:10
1,2-Dichlorobenzene
ug/m3
ND
3.1
01/12/22 10:10
1,2-Dichloroethane
ug/m3
ND
0.82
01/12/22 10:10
1,2-Dichloropropane
ug/m3
ND
0.94
01/12/22 10:10
1,3,5-Trimethylbenzene
ug/m3
ND
1.0
01/12/22 10:10
1,3-Butadiene
ug/m3
ND
0.45
01/12/22 10:10
1,3-Dichlorobenzene
ug/m3
ND
3.1
01/12/22 10:10
1,4-Dichlorobenzene
ug/m3
ND
3.1
01/12/22 10:10
2-Butanone (MEK)
ug/m3
ND
3.0
01/12/22 10:10
2-Hexanone
ug/m3
ND
4.2
01/12/22 10:10
2-Propanol
ug/m3
ND
2.5
01/12/22 10:10
4-Ethyltoluene
ug/m3
ND
2.5
01/12/22 10:10
4-Methyl-2-pentanone (MIBK)
ug/m3
ND
4.2
01/12/22 10:10
Acetone
ug/m3
ND
6.0
01/12/22 10:10
Benzene
ug/m3
ND
0.32
01/12/22 10:10
Benzyl chloride
ug/m3
ND
2.6
01/12/22 10:10
Bromodichloromethane
ug/m3
ND
1.4
01/12/22 10:10
Bromoform
ug/m3
ND
5.2
01/12/22 10:10
Bromomethane
ug/m3
ND
0.79
01/12/22 10:10
Carbon disulfide
ug/m3
ND
0.63
01/12/22 10:10
Carbon tetrachloride
ug/m3
ND
1.3
01/12/22 10:10
Chlorobenzene
ug/m3
ND
0.94
01/12/22 10:10
Chloroethane
ug/m3
ND
0.54
01/12/22 10:10
Chloroform
ug/m3
ND
0.50
01/12/22 10:10
Chloromethane
ug/m3
ND
0.42
01/12/22 10:10
cis-1,2-Dichloroethene
ug/m3
ND
0.81
01/12/22 10:10
cis-1,3-Dichloropropene
ug/m3
ND
2.3
01/12/22 10:10
Cyclohexane
ug/m3
ND
1.8
01/12/22 10:10
Dibromochloromethane
ug/m3
ND
1.7
01/12/22 10:10
Dichlorodifluoromethane
ug/m3
ND
1.0
01/12/22 10:10
Dichlorotetrafluoroethane
ug/m3
ND
1.4
01/12/22 10:10
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 01 /13/2022 04:54 PM without the written consent of Pace Analytical Services, LLC. Page 33 of 44

lV1.1 Analytical
www.pacelabs.com
Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
QUALITY CONTROL DATA
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
METHOD BLANK: 4219896 Matrix: Air
Associated Lab Samples: 10592093001, 10592093002, 10592093003, 10592093004, 10592093005, 10592093006, 10592093007,
10592093008,10592093009,10592093010,10592093011,10592093012,10592093013,10592093014
Blank Reporting
Parameter Units Result Limit Analyzed Qualifiers
Ethanol
ug/m3
ND
1.9
01/12/22 10:10
Ethyl acetate
ug/m3
ND
0.73
01/12/22 10:10
Ethylbenzene
ug/m3
ND
0.88
01/12/22 10:10
Hexachloro-1,3-butadiene
ug/m3
ND
5.4
01/12/22 10:10
m&p-Xylene
ug/m3
ND
1.8
01/12/22 10:10
Methyl-tert-butyl ether
ug/m3
ND
3.7
01/12/22 10:10
Methylene Chloride
ug/m3
ND
3.5
01/12/22 10:10
n-Heptane
ug/m3
ND
0.83
01/12/22 10:10
n-Hexane
ug/m3
ND
0.72
01/12/22 10:10
Naphthalene
ug/m3
ND
2.7
01/12/22 10:10
o-Xylene
ug/m3
ND
0.88
01/12/22 10:10
Propylene
ug/m3
ND
0.88
01/12/22 10:10
Styrene
ug/m3
ND
0.87
01/12/22 10:10
Tetrachloroethene
ug/m3
ND
0.69
01/12/22 10:10
Tetrahydrofuran
ug/m3
ND
0.60
01/12/22 10:10
Toluene
ug/m3
ND
0.77
01/12/22 10:10
trans-1,2-Dichloroethene
ug/m3
ND
0.81
01/12/22 10:10
trans- 1,3-Dichloropropene
ug/m3
ND
2.3
01/12/22 10:10
Trichloroethene
ug/m3
ND
0.55
01/12/22 10:10
Trichlorofluoromethane
ug/m3
ND
1.1
01/12/22 10:10
Vinyl acetate
ug/m3
ND
0.72
01/12/22 10:10
Vinyl chloride
ug/m3
ND
0.26
01/12/22 10:10
LABORATORY CONTROL SAMPLE:
Parameter
4219897
Units
Spike
Conc.
LCS
Result
LCS
% Rec
% Rec
Limits Qualifiers
1,1,1-Trichloroethane
ug/m3
59.3
69.3
117
70-130
1,1,2,2-Tetrachloroethane
ug/m3
75.4
86.4
115
70-132
1,1,2-Trichloroethane
ug/m3
59.6
71.6
120
70-131
1,1,2-Trichlorotrifluoroethane
ug/m3
83.6
95.6
114
70-130
1,1-Dichloroethane
ug/m3
43.9
51.0
116
70-130
1,1-Dichloroethene
ug/m3
43.5
51.7
119
70-130
1,2,4-Trichlorobenzene
ug/m3
177
172
97
70-130
1,2,4-Trimethylbenzene
ug/m3
54
60.6
112
70-137
1,2-Dibromoethane (EDB)
ug/m3
82.5
93.6
114
70-137
1,2-Dichlorobenzene
ug/m3
66.2
69.7
105
70-131
1,2-Dichloroethane
ug/m3
44.4
51.8
117
70-134
1,2-Dichloropropane
ug/m3
50.6
59.3
117
70-130
1,3,5-Trimethylbenzene
ug/m3
53.7
60.8
113
70-131
1,3-Butadiene
ug/m3
24.2
28.3
117
70-139
1,3-Dichlorobenzene
ug/m3
66.3
69.3
104
70-134
1,4-Dichlorobenzene
ug/m3
66.3
66.5
100
70-131
2-Butanone (MEK)
ug/m3
32.3
35.4
110
70-133
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 01 /13/2022 04:54 PM without the written consent of Pace Analytical Services, LLC. Page 34 of 44

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
LABORATORY CONTROL SAMPLE: 4219897
Parameter
QUALITY CONTROL DATA
Spike LCS LCS % Rec
Units Conc. Result % Rec Limits Qualifiers
2-Hexanone
ug/m3
44.8
50.1
112
70-136
2-Propanol
ug/m3
149
168
113
65-133
4-Ethyltoluene
ug/m3
53.7
60.7
113
70-130
4-Methyl-2-pentanone (MIBK)
ug/m3
44.9
53.9
120
70-130
Acetone
ug/m3
128
154
121
60-134
Benzene
ug/m3
34.8
39.0
112
70-130
Benzyl chloride
ug/m3
57.6
57.7
100
70-130
Bromodichloromethane
ug/m3
73.1
86.4
118
70-130
Bromoform
ug/m3
114
154
136
70-138 CH
Bromomethane
ug/m3
42.5
48.4
114
68-131
Carbon disulfide
ug/m3
34.4
39.1
114
70-130
Carbon tetrachloride
ug/m3
69.4
83.1
120
70-132
Chlorobenzene
ug/m3
50.2
59.1
118
70-130
Chloroethane
ug/m3
28.8
33.2
115
70-134
Chloroform
ug/m3
52.4
60.1
115
70-130
Chloromethane
ug/m3
22.6
25.8
114
68-131
cis-1,2-Dichloroethene
ug/m3
43.4
50.7
117
70-136
cis-1,3-Dichloropropene
ug/m3
49.4
54.0
109
70-130
Cyclohexane
ug/m3
37.4
45.6
122
70-131
Dibromochloromethane
ug/m3
93.2
113
121
70-134
Dichlorodifluoromethane
ug/m3
54.6
62.2
114
70-130
Dichlorotetrafluoroethane
ug/m3
71.2
81.4
114
70-130
Ethanol
ug/m3
124
138
112
55-145
Ethyl acetate
ug/m3
38.9
45.3
117
70-135
Ethylbenzene
ug/m3
47.8
60.8
127
70-133
Hexachloro-1,3-butadiene
ug/m3
133
139
104
70-132
m&p-Xylene
ug/m3
95.4
110
115
70-134
Methyl-tert-butyl ether
ug/m3
39.6
48.3
122
70-131
Methylene Chloride
ug/m3
190
210
110
65-132
n-Heptane
ug/m3
44.6
54.3
122
70-130
n-Hexane
ug/m3
38
42.4
111
70-132
Naphthalene
ug/m3
65.2
59.4
91
70-130
o-Xylene
ug/m3
47.6
55.6
117
70-134
Propylene
ug/m3
18.9
21.1
112
69-133
Styrene
ug/m3
47
53.3
114
70-135
Tetrachloroethene
ug/m3
73.4
84.7
115
70-134
Tetrahydrofuran
ug/m3
32.1
39.5
123
70-140
Toluene
ug/m3
41.6
51.0
123
70-136
trans-1,2-Dichloroethene
ug/m3
43.6
52.4
120
70-134
trans- 1,3-Dichloropropene
ug/m3
50.5
56.0
111
70-131
Trichloroethene
ug/m3
58.4
65.1
111
70-134
Trichlorofluoromethane
ug/m3
62
71.4
115
63-130
Vinyl acetate
ug/m3
46.4
53.6
116
70-139
Vinyl chloride
ug/m3
28
32.5
116
70-132
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 01 /13/2022 04:54 PM without the written consent of Pace Analytical Services, LLC. Page 35 of 44

Pace Analytical Services, LLC
1700 Elm Street
lCtaac,
Analytrcal Minneapolis, MN 55414
www.pacelabs.com [phone]
QUALITY CONTROL DATA
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
SAMPLE DUPLICATE: 4220789
Parameter
Units
10592093005
Result
Dup
Result
RPD
Max
RPD Qualifiers
1,1,1-Trichloroethane
ug/m3
ND
ND
25
1,1,2,2-Tetrachloroethane
ug/m3
ND
ND
25
1,1,2-Trichloroethane
ug/m3
ND
ND
25
1,1,2-Trichlorotrifluoroethane
ug/m3
ND
.72J
25
1,1-Dichloroethane
ug/m3
ND
ND
25
1,1-Dichloroethene
ug/m3
ND
ND
25
1,2,4-Trichlorobenzene
ug/m3
ND
ND
25
1,2,4-Trimethylbenzene
ug/m3
ND
1AJ
25
1,2-Dibromoethane (EDB)
ug/m3
ND
ND
25
1,2-Dichlorobenzene
ug/m3
ND
ND
25
1,2-Dichloroethane
ug/m3
ND
ND
25
1,2-Dichloropropane
ug/m3
ND
ND
25
1,3,5-Trimethylbenzene
ug/m3
ND
ND
25
1,3-Butadiene
ug/m3
ND
ND
25
1,3-Dichlorobenzene
ug/m3
ND
ND
25
1,4-Dichlorobenzene
ug/m3
ND
ND
25
2-Butanone (MEK)
ug/m3
6.4
ND
25
2-Hexanone
ug/m3
ND
ND
25
2-Propanol
ug/m3
23.0
21.7
5
25
4-Ethyltoluene
ug/m3
ND
ND
25
4-Methyl-2-pentanone (MIBK)
ug/m3
ND
1.5J
25
Acetone
ug/m3
97.0
89.9
8
25
Benzene
ug/m3
1.1
1.1
3
25
Benzyl chloride
ug/m3
ND
ND
25
Bromodichloromethane
ug/m3
ND
ND
25
Bromoform
ug/m3
ND
ND
25
Bromomethane
ug/m3
ND
ND
25
Carbon disulfide
ug/m3
ND
.48J
25
Carbon tetrachloride
ug/m3
ND
ND
25
Chlorobenzene
ug/m3
ND
ND
25
Chloroethane
ug/m3
ND
ND
25
Chloroform
ug/m3
ND
ND
25
Chloromethane
ug/m3
1.7
1.3
22
25
cis-1,2-Dichloroethene
ug/m3
ND
ND
25
cis-1,3-Dichloropropene
ug/m3
ND
ND
25
Cyclohexane
ug/m3
ND
1.8J
25
Dibromochloromethane
ug/m3
ND
ND
25
Dichlorodifluoromethane
ug/m3
2.9
2.6
10
25
Dichlorotetrafluoroethane
ug/m3
ND
ND
25
Ethanol
ug/m3
1550
1470
6
25 E
Ethyl acetate
ug/m3
3.7
3.4
10
25
Ethylbenzene
ug/m3
ND
ND
25
Hexachloro-1,3-butadiene
ug/m3
ND
ND
25
m&p-Xylene
ug/m3
ND
1 AJ
25
Methyl-tert-butyl ether
ug/m3
ND
ND
25
Methylene Chloride
ug/m3
ND
ND
25
n-Heptane
ug/m3
ND
ND
25
Results presented on this page are in the units
indicated by the "Units" column except where an alternate unit is presented
to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 01 /13/2022 04:54 PM without the written consent of Pace Analytical Services, LLC. Page 36 of 44

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
QUALITY CONTROL DATA
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
SAMPLE DUPLICATE: 4220789
Parameter
Units
10592093005
Result
Dup
Result
n-Hexane
ug/m3
ND
1.2J
Naphthalene
ug/m3
5.8
7.0
o-Xylene
ug/m3
ND
.74J
Propylene
ug/m3
ND
ND
Styrene
ug/m3
ND
1.6J
Tetrachloroethene
ug/m3
ND
ND
Tetrahydrofuran
ug/m3
ND
ND
Toluene
ug/m3
8.9
8.6
trans-1,2-Dichloroethene
ug/m3
ND
ND
trans- 1,3-Dichloropropene
ug/m3
ND
ND
Trichloroethene
ug/m3
ND
ND
Trichlorofluoromethane
ug/m3
ND
1.6J
Vinyl acetate
ug/m3
ND
ND
Vinyl chloride
ug/m3
ND
ND
SAMPLE DUPLICATE: 4220790
Parameter
Units
10592093006
Result
Dup
Result
1,1,1-Trichloroethane
ug/m3
ND
ND
1,1,2,2-Tetrachloroethane
ug/m3
ND
ND
1,1,2-Trichloroethane
ug/m3
ND
ND
1,1,2-Trichlorotrifluoroethane
ug/m3
ND
.85J
1,1-Dichloroethane
ug/m3
ND
ND
1,1-Dichloroethene
ug/m3
ND
ND
1,2,4-Trichlorobenzene
ug/m3
ND
ND
1,2,4-Trimethylbenzene
ug/m3
ND
.85J
1,2-Dibromoethane (EDB)
ug/m3
ND
ND
1,2-Dichlorobenzene
ug/m3
ND
ND
1,2-Dichloroethane
ug/m3
ND
ND
1,2-Dichloropropane
ug/m3
ND
ND
1,3,5-Trimethylbenzene
ug/m3
ND
ND
1,3-Butadiene
ug/m3
ND
ND
1,3-Dichlorobenzene
ug/m3
ND
ND
1,4-Dichlorobenzene
ug/m3
ND
ND
2-Butanone (MEK)
ug/m3
ND
4.1J
2-Hexanone
ug/m3
ND
ND
2-Propanol
ug/m3
16.1
15.7
4-Ethyltoluene
ug/m3
ND
ND
4-Methyl-2-pentanone (MIBK)
ug/m3
ND
ND
Acetone
ug/m3
32.8
31.8
Benzene
ug/m3
1.2
1.3
Benzyl chloride
ug/m3
ND
ND
Bromodichloromethane
ug/m3
ND
ND
Bromoform
ug/m3
ND
ND
Bromomethane
ug/m3
ND
ND
1'7VN
Max
RPD
25
17 25
25
25
25
25
25
3 25
25
25
25
25
25
25
Max
RPD RPD
2
3
4
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
Qualifiers
Qualifiers
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 01 /13/2022 04:54 PM without the written consent of Pace Analytical Services, LLC.
Page 37 of 44

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
QUALITY CONTROL DATA
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
SAMPLE DUPLICATE: 4220790
Parameter
Units
10592093006
Result
Dup
Result
Carbon disulfide
ug/m3
ND
ND
Carbon tetrachloride
ug/m3
ND
ND
Chlorobenzene
ug/m3
ND
ND
Chloroethane
ug/m3
ND
ND
Chloroform
ug/m3
ND
ND
Chloromethane
ug/m3
1.3
1.4
cis-1,2-Dichloroethene
ug/m3
ND
ND
cis-1,3-Dichloropropene
ug/m3
ND
ND
Cyclohexane
ug/m3
ND
2.7J
Dibromochloromethane
ug/m3
ND
ND
Dichlorodifluoromethane
ug/m3
2.6
2.6
Dichlorotetrafluoroethane
ug/m3
ND
ND
Ethanol
ug/m3
1340
1260
Ethyl acetate
ug/m3
2.7
2.7
Ethylbenzene
ug/m3
ND
.67J
Hexachloro-1,3-butadiene
ug/m3
ND
ND
m&p-Xylene
ug/m3
ND
1AJ
Methyl-tert-butyl ether
ug/m3
ND
ND
Methylene Chloride
ug/m3
ND
ND
n-Heptane
ug/m3
4.9
5.0
n-Hexane
ug/m3
1.2
1.3
Naphthalene
ug/m3
ND
ND
o-Xylene
ug/m3
ND
.61J
Propylene
ug/m3
ND
ND
Styrene
ug/m3
ND
.97J
Tetrachloroethene
ug/m3
ND
ND
Tetrahydrofuran
ug/m3
ND
ND
Toluene
ug/m3
3.1
3.1
trans-1,2-Dichloroethene
ug/m3
ND
ND
trans- 1,3-Dichloropropene
ug/m3
ND
ND
Trichloroethene
ug/m3
ND
ND
Trichlorofluoromethane
ug/m3
ND
1.7J
Vinyl acetate
ug/m3
ND
ND
Vinyl chloride
ug/m3
ND
ND
Max
RPD RPD Qualifiers
7
0
I
1
7
a
25
25
25
25
25
25
25
25
25
25
25
25
25 E
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 01 /13/2022 04:54 PM without the written consent of Pace Analytical Services, LLC.
Page 38 of 44

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
QUALIFIERS
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
DEFINITIONS
DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot.
ND - Not Detected at or above adjusted reporting limit.
TNTC - Too Numerous To Count
J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.
MDL -Adjusted Method Detection Limit.
PQL - Practical Quantitation Limit.
RL - Reporting Limit - The lowest concentration value that meets project requirements for quantitative data with known precision and
bias for a specific analyte in a specific matrix.
S - Surrogate
1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte is
a combined concentration.
Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values.
LCS(D) - Laboratory Control Sample (Duplicate)
MS(D) - Matrix Spike (Duplicate)
DUP - Sample Duplicate
RPD - Relative Percent Difference
NC - Not Calculable.
SG - Silica Gel - Clean -Up
U - Indicates the compound was analyzed for, but not detected.
N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for
each analyte is a combined concentration.
Reported results are not rounded until the final step prior to reporting. Therefore, calculated parameters that are typically reported as
"Total" may vary slightly from the sum of the reported component parameters.
Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes.
TN -The NELAC Institute.
ANALYTE QUALIFIERS
CH The continuing calibration for this compound is outside of Pace Analytical acceptance limits. The results may be biased
high.
E Analyte concentration exceeded the calibration range. The reported result is estimated.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 01 /13/2022 04:54 PM without the written consent of Pace Analytical Services, LLC. Page 39 of 44

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
1700 Elm Street
Minneapolis, MN 55414
[phone]
QUALITY CONTROL DATA CROSS REFERENCE TABLE
Project: 2021-336 LEWIS STIR.
Pace Project No.: 10592093
Lab ID Sample ID QC Batch Method QC Batch
10592093001
CS-1
TO-15
793334
10592093002
CS-2
TO-15
793334
10592093003
CS-3
TO-15
793334
10592093004
CS-4
TO-15
793334
10592093005
CS-5
TO-15
793334
10592093006
CS-6
TO-15
793334
10592093007
SSV-7
TO-15
793334
10592093008
SSV-8
TO-15
793334
10592093009
SSV-9
TO-15
793334
10592093010
SSV-10
TO-15
793334
10592093011
SSV-11
TO-15
793334
10592093012
SSV-11 DUP
TO-15
793334
10592093013
CS-12
TO-15
793334
10592093014
CS-13
TO-15
793334
Date: 01/13/2022 04:54 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Analytical Method
Analytical
Batch
Page 40 of 44

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■ SAMP Ct7 ON5
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iSAMPLER
W0=1D5920930.
NAME ANE) SIGNATURE
PRINT regime P SAMPLER. �.' ya � i;+,� y �
E � o U
�0
E t SA ER: DATE Signed (MM i OD+
.,� =� N N
-
{ IT U tll{�l{
A 10592093 ;hnica[ Phone: [phone]
FC046Rev.01. 03Feb2010

AIR. CHAIN -OF -CUSTODY 1 Analytical Request Document
The Chain -of -Custody is a LEGAL DOCUMENT. All relevant fields must be completed accurately.
Section A
Section B
Section C
Pa e:
of 1172
Required Client Information
Required Project Information
Invoice Information
Company. .� .,� _,.
!
Report 7o r] p ,�y 1
Altenlior: „
�r,j(_
Program
Address
Copy To
�Jy
Company Name
UST IFXperfund
r Emissrons r
Clean Air Act
Adtlress
f— Voluntary Clean
Up r Ory Clean 1W RCRA
I— ❑:her_
Emed T6
Purchase Order No
race Quote Reference:
Location of
Una
Phone: Fax
Project Name-
Pace Project ManagerlSales Ftep
Sampling by
"'
PPBV
rrV.
PPMV
_
Requested Due DatelTAT:
Project Number
Pace PrzK3e #:
State
_
ether
T
Report Level
II._V III._ IV.— Other
'Section D Required Client Information
Vold Ueda CoCea
yU216 Epp
COLLECTED
m n m Q
Method:
AIR SAMPLE I❑ TedW,5! Tg d { = .%
tne: s�mma can ,�c - ! �' � a Summa
e Leers ra Z I C ��, I 7 m ° v Flow gem q
Sample IDs MUST BE UNIQUE a +�'
Lm Volume Puff MVP w a m a d ❑
Kghvok—aPurl HVP S m LL Y s Can Control Numbe m
w.er PMm7 g ¢ i cc« rre -a .= c Number +a A QU -Z 5�
DATE TIME DATE TIME[7 c U Q� ,yG .fl RO rfl .O Pace Lab ID
12 - 5 4' �� 27 z�! 5 c��l D l�-q - -j _ €�I
Comments
�j • SAMPLE CpHWIONS
z z
z z �
} T }
z a z
■ SIGNATUREo m
o
m a qUq
(n ., _.:: �f ;F..�l:> i)ATE Sgnev fhw IEOI YYI ' m m V U m to C
n 7
CID
C-V ~ 0 r+J
A
N
O
A 1700 Elm Street SE, Suite 200, Minneapolis, MN 55414 FC046Rev.01- 03Feb2010

Document Name:
Document Revised: 04Jun2020
aceAnalytkal ®
Sample Condition Upon Receipt (SCUR) Exception Form
Page 1 of 1
Document No.:
Pace Analytical Services -
ENV-FRM-MIN4-0142 Rev.01
Minneapolis
SCUR Exceptions: Workorder #:
Container # of PM Notified? ❑Yes ❑No
Out of Temp Sample IDS : Type Containers
If yes, indicate who was contacted/date/time.
If no, indicate reason why.
Tracking Number/Temperature
5 q ,4- n<z-
g 1,27
lqq
R' t_sZa
Multiple CoolerProject? ❑Yes ❑No
If you answered yes, fill out information to the lefE
No Temp Blank
Read Temp Corrected Temp Averai; Temp
Issue Type: Container # of
Sample.ID 1.14 Type Containers
PH Adjustment Log for Preserved Samples
Sample ID
Type of
Preserv.
pH
Upon
Receipt
Date
Adjusted
Time
Adjusted
Amoun
t Added
(mL)
Lot #
Added
pH
After
In Compliance
after addition?
Initials
❑Yes ❑No
❑Yes ❑No
❑Yes ❑No
❑Yes ❑No
Comments:
Page 43 of 44

Document Name:
Condition Upon Receipt (SCIJR) - Air
Document No.:
ENV-FRM-MIN4-0113 Rev.01
ConditionAir Sample Client Name: , Project #:
•
Courier: dEx El El ❑ Client
Pace ❑ SpeeDee El Commercial
el
Tracking Number: See Exception
Custody Seal on Cooler/Box Present?
Seals Intact? ❑ Yes ❑ No
Packing Material: ❑ Bubble Wrap ❑ Bubble Bags Foam
❑ None ❑ Tin Can ❑ other:
Document Revised: 130ctZ021
Page 1 of 1
{ Pace Analytical Services • Minneapofis
Wa#:10592093
PM: MR2 flue Date: 12/28/21
CLIENT: PYRAMID
Date & Initials of Person
Examining Contents:
Chain of Custody Present?
Yes
❑ No
1
r,:amments:
Chain of Custody Filled out?
Yes
❑ No
2.
Chain of Custody Relinquished?
Yes
❑ No
3,
Sampler Name and/or Signature on COC?
Yes
❑ No
❑ N/A 4_
Samples Arrived within Hold Time?
Yes
❑ No
5,
Short Hold Time Analysis (c72 hr)? _
❑ Yes
o
6.
Rush Turn Around Tlme-Re quested?
❑ Yes
No
1 7,
Sufficient Volume?
es
No
g,
Correct Containers Used?
(Tediar hags not acceptable container for TO-15
Yes
❑ No
9•
rLs care_ wro.— � a r` C 0[ICOM2C*d he
or APH)
-Pace Containers Used?
es
❑ No
Containers Intact?
ky es
❑ No
(visual i c jno leaks when pressurized)
Media: Air Can I Airbag
11. Individually Certified Cans? Y N ist which samples}
Is sufficieklatomi5tion available to reconcile samples
to
Yes
❑ No
12,
the COC?
Do cans need to be pressurized?
13.
(DO NOT PRESSURIZE 3C or ASTM 1946111)
s
❑ No
Gauge R.- ❑ 10AIR26
❑ 10AIR34
❑ 10AIR35 ❑10AIR17
WDAIR47 ❑10AIR48
Canisters
Canisters
Flow
Sample Number Can Ip Controller
Initial
Pressure
Final
Pressure
Sample Number
Flow Initial Final
Can ID Controller Pressure Pressure
tt- - D53
Cps
g
�CyII
tt -5 �3sr I�t�
_ ,
,1v(D 3qs,)
tt `�S`� Z� �
� •5'
aDw 716 A3
-k.5
►i-1 (19� �2 ro r I 3_-
5
-/
i� 12 3611 )1
CLIENT NOTIFICATION/RESOLUTION
Field Data Required? ❑ Yes ❑ No
Person Contacted:
Date/Time:
Comments/Resolution
ram
Project Manager Review: cs Date: 12i21121
Nate: Whenever there is a discrepancy affecting North arolina compliance samples, a copy of this form will be sent to the North Carolina DEHNR CertiFcation Office ft.e., out of hold,
incorrect preservative, out of temp, Incorrect cantoiners). Page 44 of 44

Attachment H

PYRAMID
EWRCY"NTAL. B EN WRING, P.C.
Weather Expected: Clear and cold am
Project Name: West Lewis Street Brownfields Site
Project Number: 2.02-2 —02-f
City : Greensboro, NC -- __ __ `-' w• �
Project Address : (Zrr0 W • 1�aa1
SSV / SG Fieldwork Record
SAMPLE S�. W+
NAME
Category
Descriptions
Descriptions
Address I22-y W. Lewis 5t.
Ea- North) South / Center
SG Location 5V ✓ CS
Bus. Operations?
Floor Type Concrete / wooden
E2r Crawlspace or SSV VN�
Vapor Pin SSV Install Date : �� � Z-
►I
Er Floor Thickness ? "
Installation
Location on Site Map ? es No
Void Space Under Floor:
�HVAC in this Space ? Yes No
ERrilnconditioned Space ?
Air Sampling �Oate : I C� XD Z Z
Cylinder Number : ❑ 2—05
Batch Cert / Individ. Cert.
��Flow Controller - 200 ml/min # pYPi
dHelium - Fully Hooded LjJZ6
Sample Train Purge (5,�ak) 20 x 60 MLA 0 ML
Hood Helium = prn
D--,Tedlar Bag Helium = ppm
Readings of Vacuum [ inches of Hg ) over5ample COLLECTION Time and Vacuum
r
Starting Time : r � .: /C L�]
�J
Cannister Vacuum /Pte-Sampling rf �.❑ �C
i
!41e 02~ S Mins. �-� •'D Hg" 7-2 25 Mins_- j • 0 Hg" 45 Mins. Hg"
0? 10 Mins. '•" _ Hg" L . 2w1 30 Minn~ �.� Hg" 50 Min H "
{� 15 Mins. ' t� •� Hg"
35 Mins. SS Mins. H "
20 Mins. "" r 0 Hg"
40 Mins. �g" 60 Mins. Hg"
H
Sample End Time �'1 ' � Sample Cannister Ending Vacuum ' .0 He
Sample r% Hg" Vacuum on COC
Pick u By PA £ Courier
Packed in Pace Boxes Date z
Ef
1Er
Shipping
�Cylinder inspecteCOKDamaged
e x Ing
Pyromld En vironmen rol &
503 Industrial Avenue, Greensboro, NC 17405 Phone - (336) 335-3I74

Project Name: West Lewis Street Brownfields Site
PYRAMID Project Number : 202,2 o z l
WKWENrutexESING.P,C. City. Greensboro, NC (',}
Project Address: fZ0 k7 • 1,4tX ,1
SSV / SG Fieldwork Record DuT 51 1) C
Weather Expected. Clear and cold am SAMPLE
NAME kol
Category
Descriptions
Descriptions
Address �D W. Lewis St. [EJ <North / South /fr�r Center
SG Location SSV CS ED' Bus. Operations?v
Floor Type E2` oncrete / Wooden Crawlspace or 55V CF'�'l
Vapor Pin SSV Install Date: 2 2 Floor Thickness ? 411 "
Installation
Location on Site Map? es No E Void Space Under Floor
HVAC in this Space? 400 El Unconditioned Space . r
T); " s s e ►� vr,�
Date ZZ [Er Cylinder Number
Air SamplingRr
Flaw Controller - 200 ml/min
Batch Cert. Individ. Cert. Er
21
Helium -Fully Hooded EDSample Train Purge (S vgisj 2Q x 5U ML = 1, O ML
Hood Helium � ppm edlar Bag Helium = _—ppm
r
Readings of Vacuum (inches of Hg) over Sample
COLLECTION Time and Vacuum
r
Starting Time . ;3)
11
Cannister Vacuum / Pre -Sampling : r Q• G)
5 Mins*- 2 E-2• HE"
25 Mins. •' �pZ • Hg" 45 Mins Hg"
10 Mins. :� HE"
30 Mins. "` `•� Hg" 50 ins. Hg"
15 Mins. 'rQ. Hg" `3 y Mins. HE" 55 Min . g"
20 Mins. ; i0.Q Hg"
40 Mins. HE Mins. g"
Sample End Time . 03
r►
Sample Cannister Ending Vacuum ^ _7 • HE"
Picku By PAJE Courier
Sample Er HE" Vacuum on CDC ` 7'� Packed in Pace Boxes Date I Z�ZZ
Shipping
E/ Cylinder inspecte t OK j Damaged
ip : Trac i
Pyramid Environmental &
SSv r IS P) 0 - 2�- 3
Phone -[phone]
F�

PYRAM I D
�fNY]FOIIiEIi && QIGpEEW. P.C.
Weather Expected: Clear and cold am
Project Name: West Lewis Street Brownfields Site
Project Number : a 0,2Z ~ 0 2-1
City : Greensboro NC
Project Address - 1 Z0 W L4"�S Sv�-
SSV / SG Fieldwork Record
SAMPLE , f J�
NAME V [,
Category
Descriptions
Descriptions
Address '� t �-D W. Lewis 5t. North South Center
CS Bus. Operations? �0-KCA
SG location E2�IR
Floor Type d Wooden d Crawlspace or E�1 CC.Y7
Vapor Pin EEF 55V Install Date :
ER'lFloor Thickness ?Installation
A0`0soD)AT—
dLocation on Site Map ? Void Space Under Floor : ! y �J
rN
EfHVAC in this Space ? Yes No Unconditioned Space 1r Ir i)
Air Sampling Ef Date: 2pZ 2 Cylinder Number: 2-0 zl-` a
Batch Cert Individ. Cert. Flow Controller - 200 ml/min # e Q-M�
0 Helium - Fully Hooded Sample Train Purge { 5 col 20 x 60 ML = 1,200 MIL
4�o QD ❑ v 4�
��] Hood Heiiun? ppm � Tedlar Bag Helium ppm
Readings of Vacuum ( inches of Hg j over Sample
COLLECTION Time and Vacuum
r
Starting Time : � 5 ► 7- E)
�. r It
Cannister Vacuum / Pre -Sampling
5 Mins. HE"
25 Mins.— 1-2—
HE " 45 Min Hg"
1O Mins. � � Hg"
36 Mins. w. • Hg" 50 ins.
15 Mins. Hg" 3, 9+ Mins. 5 Hg" 5 Min Hg"
20 Mins. Hg"
40 Mins, Hg" 60 Mins. F
n
Sample End Time �+ p 0 Sample Cannister Ending Vacuum =I. Pig I
+ Picku B PA E Courier
! � Y
Sample � Hg" Vacuum ❑n CDC ^` � � � � +i �
+ Packed in Pace Boxes Date 2 01
Shipping
Cylinder inspected OI(} Damaged
x ip : rac m #
Pyramid Environmental E Engineering, P.C. 5031ndustrialRvenue. Greensdoro. NC 27406 Phone - (335) 335-3I74
SSA - Ka =-�. `�-

z
PYRAMID
EwRo iEWAL & RX&EERN3, P.C.
Weather Expected:
Clear and cold am
Project Name: West Lewis Street Brownfields Site
Project Number: 2() 2-2 OZ
City: Greensboro, NC
Project Address : Z0
SSV / SG Fieldwork Record
SAMPLE Ss G ! AfAARE I
Category
Descriptions
Descriptions
Address �'� W. Lewis St. E2/ North / South Centeerr+,��
SG Location 55V C5 � Bus. Operations? ri "r L C4,4
Floor Type ErConcrete / Wooden Crawlspace or 55V %•
6 r�
Vapor Pin SSV Install Date: Z ET Floor Thickness ? "
_r
Installation
f'�
Location No Void Space ND Vol `!
Site Map ?gy"
on
Under Floor :
03 HVAC in this Space ?No ED-Unconditioned Space ? --� NA
Air Sampling Date : r Z Cylinder Number: f 2 V
Ea Batch Ce / Individ. Cert. M Flow Controller - 200 ml/min # 7 r T
r Er Helium - Fully Hooded Sample Train Purge (ols) 20,60 M�,200 ML
Hood Helium = >5 "pprn Eil— Tedlar Bag Helium = ppm
710, obo
0 Readings of Vacuum j inches of Hg j over Sample
COLLECTION Time and Vacuum
StartingTime : rf'
Cannister Vacuum / Pre -Sampling : '� 7�•� r'
1>0 5 Mins.- dC Hg" L 20 25 Mins. ^�• Hg" 45 Mins. Hg"
I,T. 0S 1D Mins. 2'Z' •J Hg � 2,;F7 30 Mins. i 0 Hg" 50 M- s. H "
• 0 1 15 Minim • Hg"
20 Mins. 5 • 0 Hg'
35 Mins. Hg" 55 Mins. H
Mins. g" 60 ins-s. Hg"
�40
Sample End Time �• 3 1 " I }5ample Cannister Ending Vacuum `• Hg"
Pickup By PAC Courier
Sample El Vacuum an COC — 0 � Packed in Pace Boxes � Date ��
Shipping
►� Cylinder inspecte [ OIC ] Damaged
Pyramid Environmental &
ssv - ►"7
NC 27406 Phone - (336) 335-3I74
p fo ] C-. 6

PYRAMID
E7F RCMENTA1& 24MEBING, P.C.
Weather Expected: Clear and cold am
Project Name: West Lewis Street Brownfields Site
Project Number: 2Zk2�2- - 02,J
City: Greensboro, NC �L
Project Address: 120 ► -% Le-i/► ic,- `4'•
SSV / SG Fieldwork Record
SAMPLE
NAME LTj
Category
Descriptions
Descriptions
Address Eff W. Lewis St. 01'� North / South / Center
SG Location M SSV / C5 Bus. Operations? `-'a'-
[Ef
Floor Type EZ`� oncrete / Wooden 21/ Crawispace or SV VY'+ C��IIt f✓
jC
Vapor Pin Er SSV Install Date : � �/ � FlaorThickness ? "
Installation �[ f
EffLocation on Site Map ? Yes No Er Void Space Under Floor:
dHVAC in this Space ? Yes NoUnconditioned Space ? _
Air Sampling El Date : ��"�� Cylinder Number : �� - `
Flow Controller - 200 ml/min #
Batch Cert. / Individ. Cert. Er
El
Er Helium - Fully Hooded Sample Train Purge ( 5 T'` 20 x 60 WJ,-- 1,200 ML
Hood Helium = >-57WO ppm EDTedlar Bag Helium = ppm
PZ01von
F1Readings of Vacuum ( inches of HE ) over Sample
COLLECTION Time and Vacuum
Starting Time : : 9V
Cannister Vacuum / Pre -Sampling: —�"�
5 Mins. b . Hg"
25 Mins. �t Hg" 45 Mins. HE
10 Mins. ` C7 Hg"
30 Mins. g,y Hg" 50 Min Hg"
15 Mins. Hg"
35 Mins. g' 55 ins. g"
20 Mins. -► S r Q Hg"
40 Mins, 60 MinsZ, Hg"
st
Sample End Time 1 o� I �' I Sample Cannister Ending Vacuum- L •❑ Hg"
r� 1 Picku By PIE Courier
Sample EE� HE" Vacuum on COC l •D Packed in Pace Boxes Date .2
Shipping
Cylinder inspected 0Damaged
Pyramid Enviranmen ineering, P.C. 503 Industrial Avenue, Green 7406 Phone - [phone]
cfSv—IU Pc� - 45.12

Project Name: West Lewis Street Brownfields Site
PYRAMID Project Number: -?- o Z 2 — ❑ZJ
WROMADrAL6DOMING, P.C. City : Greensboro, NC
Project Address : 1 2►0 L W- 5 ill—.
SSV / SG Fieldwork Record
Weather Expected: Clear and cold am
SAMPLE
NAME v
Category
Descriptions
Descriptions
Address W. Lewis 5t- North / South / Center`
_ r
5G Location t S dBus. Operations? &?c �-�'Vi�
Fivar Type
gFCn,,,tC/ Wooden Crawlspace or C5VCon Cy-
�!
Vapor Pin ER'sSV Install Date: + � Zy Floor Thickness ? "
Installation
Location on Site Map ? Yes No Void Space Under Floor : 0� V oL U
16 HVAC in this Space ? Yes No unconditioned Space ? —NA
Air Sampling E" Date : 1 �� �EJ Cylinder Number: C./ G 25 9
Er atch Ce Individ. Cert. ER' Flaw Controller - 200 ml/min #
Helium - Fully Hooded Er Sample Train Purge 5 v01�sj]�7 20 x 60 M�00 MIL
ID Hood Helium = a 5,008 PM In Tedlar Bag Helium = _ _jC/ ppm
10, Readings of Vacuum inches of Hg } over Sample
COLLECTION Time and Vacuum
Starting Time : 1 .I
Cannister Vacuum / Pre -Sampling :
5 Mins. � Hg"
25 Mins, � HE 45 Mins. g" i
10 Mins. Hg"
r r
Mins,—
3p Mins. Hg" 50 Mins. Hg"
rr
15 Mins. Hg"
35 Mins. Hg" 55 Mins. Hg"
ry
20 Mins. " Hg"
40 Mins. Hg" 60 Mi Hg"
Sample End Time ! —z
Sample Cannister Ending Vacuum' I'y et Hg"
�7 Pickup By P E Courier
Sample Hg" Vacuum on CDC " i r Packed in Pace Boxes L� Oate
Shipping
Cylinder inspectedleDamaged
acking #
Pyramid Environmental ns6oro, NC 27406 Phone - [phone]
SSV — I Ct `" j • �Pm

PYRAMID
cDWA MEWAL8 MNEER:NG P.C.
Weather Expected: Clear and cold am
Project Name: West Lewis Street Brownfields Site
Project Number: -2 G)Z2 ' ❑Z I
City : Greensboro, NC ��77
Project Address : l 4fl
SSV / SG Fieldwork Record
W . LQt'as
SAMPLE NAME 2-0
SS l V � —
Category
Descriptions
Descriptions
Address F9 1 2-0 W. Lewis St. Ell, North / South Center G
SG Location Ef V CS Bus. Operations?
Floor Type ncrete / Wooden Crawlspace or 55V LS�n
1.
Vapor Pin Er SSV Install Date: � Z ET Floor Thickness ? "
Installation r�
Location on Site Map ? Yes No Void Space Under Floor! ND
cV ,Dt
�HVAC in this Space ? Yes No Er Unconditioned Space ? NA
Air Sampling Date : Q 2WCylinder Number: 2-'7
Batch Cert. / Individ. Cert. EEI- Flaw Controller - 200 ml/min # lr'V
Helium - Fully Hooded
ED�Sample Train Purge ( 5 vols) 20 x 60 ML -1,200 MIL
t1�
dHood Helium = a 5,000 pm �Tedlar Bag Helium = ppm
COI 0oa
EIrReadings of Vacuum ( inches of Hg) over Sample
COLLECTION Time and Vacuum
Starting Time :�
Cannister Vacuum / Pre -Samplings
5 Mins. Hg"
25 Mins. 3. Hg" 45 Mins. He
10 Mins.
2J Hg"
30 Mins. `�S Q. Hg" 50 Mins. Hg "
15 Mins. i C1 • 5 Hg"
35 Mins. He 55 Mins. Hg"
20 Mins. — 1 6.5 Hg"
40 Mins. He 60 Mins. Hg"
Sample End Time Q Sample Cannister Ending Vacuum Hg"
�] [Er Pickup By PA E Courier
Sample Hg" Vacuum on COC r' Packed in Pace Boxes © Date � 2� z
Shipping
EfCylinder inspecte t OK) Damaged
e
Pyramid Environmental & Engineering, P.C. 503Industrial AVenue, Greensboro, NC 27406 Phone - [phone]
55V -V ply] = 6 3 . i Pp nn

PYRAMID
Erm OV&Wru a BiMEFR c, rc.
Weather Expected: Clear and cold am
Project Name: WestLewisStreet Rrro-�twnfields Site
Project Number: L- 22 — v2'
City : Greensboro, INC
Project Address : t D S -V
SSV / SG Fieldwork Record
SAMPLE NAp
ME V SS — Z
Category
Descriptions
Descriptions
Address �" W. Lewis St. North / 5outh4 / Center C
SG Location E,) CS Bus. Operations?
Floor Type ED' �Concret / Wooden Er Crawlspace or 55V
Vapor Pin dS5V Install Date 2-2-[Ef Floor Thickness ? — _ _ lip t r! "
Installation
ER"Location on Site Map ? Yes No dVoid Space Under Floor
HVAC in this Space? Ces No e ?~�
Air SamplingDate Cylinder Number: 2.1 e C
atch Cent. Individ. Cert.Flow Controller - 200 ml/min #
D'Helium - Fully Hooded TVS Sample Train Purge { S voIsj 20 x 60 ML = 1,200 ML
} ZD 000
Hood Helium = 5,d00 ppm �Tediar Bag Helium = 55U- ?-1
Readings of Vacuum ( inches of Hg ) over Sample COLLECTION Time and Vacuum pit. A�
Starting Time : IZ r : CannisterVacuum / Pre -Sampling : — "
S Mins. � Hg" 25 Mins. Hg" 45 Mins. g"
10 Mins. 22 Hg" 30 Mins.` Hg" 50 Mins Hg"
15 Mins. .5 Hg" 4, WMins. Hg" 55 Mins. Hg"
.•11
20 Mins. 15 Hg" 40 Mins. Hg" 60 Mins. Hg"
4Sample End Time 2 ; 55 Sample Cannister Ending Vacuum `7 Hg"
{{ Picku By PA Courier
Sample 1Hg" Vacuum on COC " Packed in Pace Boxes ��Date
Shipping
ET -Cylinder inspects { ❑K } Damaged #
Pyramid fnVlrOnMe in P.C. 5031ndustno Avenue, Greenshora, NC 27406 Phone - [phone]
SS if D = '7f,4- ,ff V\

Project Name: West Lewis Street Brownfields Site
PYRAMID Project Number
•E1Mf034UrALA@0ERRID.P.C. City., Greensboro, NC y
Project Address : t Uetac, 1
SSV / SG Fieldwork Record
Weather Expected: Clear and cold am
SR NAME 7E
NSS A
Category
Descriptions
Descriptions
Address W. Lewis St. North / South / Center
Bus. Operations?' C�
SG location dSSV CS El
Floor Type oncret / Wooden D�' Cratiaihnace or SSV IM COySC1V_ ei-C
Vapor Pin 71 SSV Install Date: 01 02,2- Floor Thickness ? �� ��•+''+'L
Installation ff"Ll'ation on Site Map ? Yes No Void Space Under Floor
[ErHVAC in this Space ? Yes No
ncanditianed Space ?
Air Sampling E Date : ! 1 1 ZDZZ M___C y1inder Number: 1 � L
datch Cert. Individ. Cert. FO FI0W Controller - 200 ml/min 4
Er Helium - Fully Hooded � [ Sample Train Purge {5vols) 20 x 60 ML =y,200 ML
Ea Hood Helium =�0O pp d �Tedlar Bag Helium =pp IjSV ^ �Z
Readings Hg) Sample COLLECTION Time Vacuum
ofVacuum ('inches of over
and
Starting Time : U M
Cannister Vacuum / Pre -Sampling
G !�
5 Minsk 2 . -/ Hg"
25 Mins. " Hg" 45 Mins. X Hg"
r� q
10 Mins." Hg" Zq &Mins. Hg" 50 Mins. Hg"
15 Mins. . n He
35 Mins. % Ng" 55 Mins. Hg"
20 Mins. Hg"
40 Mins.! Hg" 60 Mins"
Hg
-.
Sample End Time ��i�5ample Cannister Ending Vacuum —7,0 Hg"
Picku By PE Courier
Sample Hg" Vacuum on COC 01"Packed in Pace Boxes dDateO 42. r02—Z
Shipping
Cylinder inspected 0Damaged
Pyramid Environmental eering, P.C. 5031ndustna oro, NC 27406 Phone - [phone]
S�v..a2- Ply = &3frr
3

Project Name: West Lewis Street Brownfields Site
PYRAMID
, Project Number :
WFOVEWAL& rr4c_r_ERING,_P.C.. City: Greensboro, NC
Project Address : 12-0 14a4N-,�'S
5SV / 5G Fieldwork Record
Weather Expected:
Clear and cold am
SAMPLE
NAME SV " 2 3
Category
Descriptions
Descriptions
r7 � K G41ryi.��'
Address W. Lewis St. CAW
5G Location EO'SSV CS Er Bus. Operations? ❑ CaAI'-
Floor Type Concrete f---Wvr;MT - Craw ace or 5SV wit COWL �'+rCn
Vapor Pin 12r�SSV Install Date:.02 Z dFloorThickness ? G C'• . 5 iP r+
Installation
Location on Site Map ? Yes No ED" Vold Space Under Floor
VAC in this Space ? & No EJ-7n—coed Space ? — 0 A7 Y
�3
Air Sampling Date : 1 I «I I��� Cylinder Number :��V������T
Q Batch Cert. / Individ. Cert. ❑� Flow Controller - 200 ml/min #
Er Helium - Fully Hooded L(F5 Sample Train Purge [ 5 vols) 20 x 60 ML =1,200 ML
>- i 57, ()t7p 0 risV _Z3
EirHood Helium = a 5,000 ppm Ef Tedlar Bag Helium = ppm
p[
ErReadings of Vacuum { inches of He ] over Sample
COLLECTION Time and Vacuum
Starting Time : tV : rJ�ri
Cannister Vacuum / Pre-1Sampling
k 04,1•5 Mins. o �, - He" 1 �.V4 25 Mins. — 21 • � He" {1 : 2-i 45 Mins. 13 s Hg„
l0;.�a� 10 Mins. �� Hg" f �••ag3D Mlns.'` `�D Hg" f�; M50 Mins. _ _12.D He"
iC):.0
l�15 Mins."' �`4• � Hg" ] ��
I
35 Mins. f l`7,D Hg" JJ-.3X -55 Mins. 0'r1) Hg"
10; 5C720 Mins. Hg" L f
i9 40 Mins. ~� 5` Hg" 1 i i 15)(60 Mins. • ❑ Hg"
EySample End Time 11 Sample Cannister Ending Vacuum �• V Hg"
Pickup By PACE Courier
Sample EJO�Hg" Vacuum on COC Packed in Pace Boxes Date
Shipping E:r Cylinder inspecte OK j Damaged
x i c mg
Pyramid Environmental & Engineering, P. ro NC 27406 Phone - [phone]
SSV 2 3 � 1 � -- � � • fv � p-r�

4,475 sq. ft. J
dB 10120 BARNHARDT ST
120 W. Lewis
9,900 sq. ft.
•Mai►
- I E
f
ffrr jj!
I J.
'11
117 B-1 W. Lewis
3,737 sq. ft.
4
IL
1-
Guilford County, NC
� SSV-14 S -15
s
SS -17
� SSV-19 � � �►' I
SS 8
120 W LEWIS 5T SSv_zfl
SSV-23
v
• SSV-21 -
MAT
531� 520�ELM 5T =
533
IR UK
c ",m
526 S'EC.M.ST�r ,
�535'E � t �
5325345 ELM ST
ssv
_. ssv-7 C5-CS -4 .... '
r
cs-�
V0c
600 MT+�
z
,S5 ftEL 117 W. Lewj-6204
3,564 sq. f
May 5, 2021
115 W. Lewis
3,666 sq. ft.
W. Lewis
j 2,fi97 sq, ft,
111 W. Lewis 1:600
5,828 s ft. ° 25 so 100 ft
0 5 10 20 m
Figure 5
Locations afSSV/Crawlspace Samples
West Lewis &Model Linen Site
NC 8rownfrelds Work Plan
Version 2.3
3uil}ord County does nat certify the avmentid[y or accuracy of Such infarmapon. No warranties, express or implied. are provided for the records andlor mapping data herein, or for their use or interpretation by the Vssr.

Attachment I

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
February 08, 2022
Mr. Mike Jones
Pyramid Environmental
P.O. Box 16265
503 Industrial Avenue
Greensboro, NC 27416
RE: Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
Dear Mr. Jones:
Enclosed are the analytical results for sample(s) received by the laboratory on January 21, 2022. The results relate only to
the samples included in this report. Results reported herein conform to the applicable TNI/NELAC Standards and the
laboratory's Quality Manual, where applicable, unless otherwise noted in the body of the report.
The test results provided in this final report were generated by each of the following laboratories within the Pace Network:
• Pace Analytical Services - Minneapolis
Revised on 02/08/22 to include results for samples 001, 003, and 006 per client request.
If you have any questions concerning this report, please feel free to contact me.
Sincerely,
�G
Lindsey N Wooten
[e-mail]
[phone]
Project Manager
Enclosures
REPORT OF LABORATORY ANALYSIS
r
O
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without the written consent of Pace Analytical Services, LLC.
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laneAnalytical
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Huntersville, NC 28078
[phone]
CERTIFICATIONS
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
Pace Analytical Services, LLC - Minneapolis MN
1700 Elm Street SE, Minneapolis, MN 55414
1800 Elm Street SE, Minneapolis, MN 55414--Satellite Air
Lab
A2LA Certification #: 2926.01
Alabama Certification #: 40770
Alaska Contaminated Sites Certification #: 17-009*
Alaska DW Certification #: MN00064
Arizona Certification #: AZ0014*
Arkansas DW Certification #: MN00064
Arkansas WW Certification #: 88-0680
California Certification #: 2929
Colorado Certification #: MN00064
Connecticut Certification #: PH-0256
EPA Region 8 Tribal Water Systems+Wyoming DW
Certification #: via MN 027-053-137
Florida Certification #: E87605*
Georgia Certification #: 959
Hawaii Certification #: MN00064
Idaho Certification #: MN00064
Illinois Certification #: 200011
Indiana Certification #: C-MN-01
Iowa Certification #: 368
Kansas Certification M E-10167
Kentucky DW Certification #: 90062
Kentucky WW Certification #: 90062
Louisiana DEQ Certification #: AI-03086*
Louisiana DW Certification #: MN00064
Maine Certification #: MN00064*
Maryland Certification #: 322
Michigan Certification #: 9909
Minnesota Certification #: 027-053-137*
Minnesota Dept ofAg Approval: via MN 027-053-137
Minnesota Petrofund Registration #: 1240*
Mississippi Certification #: MN00064
Missouri Certification #: 10100
Montana Certification #: CERT0092
Nebraska Certification #: NE-OS-18-06
Nevada Certification #: MN00064
New Hampshire Certification #: 2081*
New Jersey Certification #: MN002
New York Certification #: 11647*
North Carolina DW Certification #: 27700
North Carolina WW Certification #: 530
North Dakota Certification #: R-036
Ohio DW Certification #: 41244
Ohio VAP Certification (1700) #: CL101
Ohio VAP Certification (1800) #: CL110*
Oklahoma Certification #: 9507*
Oregon Primary Certification #: MN300001
Oregon Secondary Certification #: MN200001*
Pennsylvania Certification #: 68-00563*
Puerto Rico Certification #: MN00064
South Carolina Certification #:74003001
Tennessee Certification #: TN02818
Texas Certification #: T104704192*
Utah Certification #: MN00064*
Vermont Certification #: VT-027053137
Virginia Certification #: 460163*
Washington Certification #: C486*
West Virginia DEP Certification #: 382
West Virginia DW Certification #: 9952 C
Wisconsin Certification #: 999407970
Wyoming UST Certification #: via A2LA 2926.01
USDA Permit #: P330-19-00208
*Please Note: Applicable air certifications are denoted with
an asterisk (*).
REPORT OF LABORATORY ANALYSIS
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lceAnalyircal
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Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
SAMPLE ANALYTE COUNT
Project:
Pace Project No.:
Lewis St. Brownfields 2022-021-Revised Report
92583866
Analytes
Lab ID
Sample ID
Method
Analysts
Reported
Laboratory
92583866001
SSV-14
TO-15
HMH
61
PASI-M
92583866002
SSV-15
TO-15
HMH
61
PASI-M
92583866003
SSV-16
TO-15
HMH
61
PASI-M
92583866004
SSV-17
TO-15
MA
61
PASI-M
92583866005
SSV-18
TO-15
HMH
61
PASI-M
92583866006
SSV-19
TO-15
HMH
61
PASI-M
92583866007
SSV-20
TO-15
MA
61
PASI-M
92583866008
SSV-21
TO-15
MA
61
PASI-M
92583866009
SSV-22
TO-15
MA
61
PASI-M
92583866010
SSV-23
TO-15
MA
61
PASI-M
92583866011
SSV-23 Dup.
TO-15
MA
61
PASI-M
PASI-M = Pace Analytical Services - Minneapolis
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 3 of 42

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
Sample: SSV-14 Lab ID: 92583866001 Collected: 01/19/22 14:26 Received: 01/21/22 08:30 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Acetone
ND
ug/m3
11.1
1.83
01/28/22 21:29
67-64-1
Benzene
ND
ug/m3
0.59
1.83
01/28/22 21:29
71-43-2
Benzyl chloride
ND
ug/m3
4.8
1.83
01/28/22 21:29
100-44-7
Bromodichloromethane
ND
ug/m3
2.5
1.83
01/28/22 21:29
75-27-4
Bromoform
ND
ug/m3
9.6
1.83
01/28/22 21:29
75-25-2
Bromomethane
ND
ug/m3
1.4
1.83
01/28/22 21:29
74-83-9
1,3-Butadiene
ND
ug/m3
0.82
1.83
01/28/22 21:29
106-99-0
2-Butanone (MEK)
ND
ug/m3
5.5
1.83
01/28/22 21:29
78-93-3
Carbon disulfide
ND
ug/m3
1.2
1.83
01/28/22 21:29
75-15-0
Carbon tetrachloride
ND
ug/m3
2.3
1.83
01/28/22 21:29
56-23-5
Chlorobenzene
ND
ug/m3
1.7
1.83
01/28/22 21:29
108-90-7
Chloroethane
ND
ug/m3
0.98
1.83
01/28/22 21:29
75-00-3
Chloroform
ND
ug/m3
0.91
1.83
01/28/22 21:29
67-66-3
Chloromethane
ND
ug/m3
0.77
1.83
01/28/22 21:29
74-87-3
Cyclohexane
ND
ug/m3
3.2
1.83
01/28/22 21:29
110-82-7
Dibromochloromethane
ND
ug/m3
3.2
1.83
01/28/22 21:29
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/m3
1.4
1.83
01/28/22 21:29
106-93-4
1,2-Dichlorobenzene
ND
ug/m3
5.6
1.83
01/28/22 21:29
95-50-1
1,3-Dichlorobenzene
ND
ug/m3
5.6
1.83
01/28/22 21:29
541-73-1
1,4-Dichlorobenzene
ND
ug/m3
5.6
1.83
01/28/22 21:29
106-46-7
Dichlorodifluoromethane
2.9
ug/m3
1.8
1.83
01/28/22 21:29
75-71-8
1,1-Dichloroethane
ND
ug/m3
1.5
1.83
01/28/22 21:29
75-34-3
1,2-Dichloroethane
ND
ug/m3
1.5
1.83
01/28/22 21:29
107-06-2
1,1-Dichloroethene
ND
ug/m3
1.5
1.83
01/28/22 21:29
75-35-4
cis-1,2-Dichloroethene
ND
ug/m3
1.5
1.83
01/28/22 21:29
156-59-2
trans-1,2-Dichloroethene
ND
ug/m3
1.5
1.83
01/28/22 21:29
156-60-5
1,2-Dichloropropene
ND
ug/m3
1.7
1.83
01/28/22 21:29
78-87-5
cis-1,3-Dichloropropene
ND
ug/m3
4.2
1.83
01/28/22 21:29
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/m3
4.2
1.83
01/28/22 21:29
10061-02-6
Dichlorotetrafluoroethane
ND
ug/m3
2.6
1.83
01/28/22 21:29
76-14-2
Ethanol
12.9
ug/m3
3.5
1.83
01/28/22 21:29
64-17-5
Ethyl acetate
ND
ug/m3
1.3
1.83
01/28/22 21:29
141-78-6
Ethylbenzene
ND
ug/m3
1.6
1.83
01/28/22 21:29
100-41-4
4-Ethyltoluene
ND
ug/m3
4.6
1.83
01/28/22 21:29
622-96-8
n-Heptane
ND
ug/m3
1.5
1.83
01/28/22 21:29
142-82-5
Hexachloro-1,3-butadiene
ND
ug/m3
9.9
1.83
01/28/22 21:29
87-68-3
n-Hexane
ND
ug/m3
1.3
1.83
01/28/22 21:29
110-54-3
2-Hexanone
ND
ug/m3
7.6
1.83
01/28/22 21:29
591-78-6
Methylene Chloride
ND
ug/m3
6.5
1.83
01/28/22 21:29
75-09-2
4-Methyl-2-pentanone (MIBK)
ND
ug/m3
7.6
1.83
01/28/22 21:29
108-10-1
Methyl-tert-butyl ether
ND
ug/m3
6.7
1.83
01/28/22 21:29
1634-04-4
Naphthalene
ND
ug/m3
4.9
1.83
01/28/22 21:29
91-20-3
2-Propanol
ND
ug/m3
4.6
1.83
01/28/22 21:29
67-63-0
Propylene
ND
ug/m3
1.6
1.83
01/28/22 21:29
115-07-1
Styrene
ND
ug/m3
1.6
1.83
01/28/22 21:29
100-42-5
1,1,2,2-Tetrachloroethane
ND
ug/m3
2.6
1.83
01/28/22 21:29
79-34-5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 02/08/2022 06:42 PM without the written consent of Pace Analytical Services, LLC. Page 4 of 42

lceAnalyircal
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Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
Sample: SSV-14 Lab ID: 92583866001 Collected: 01/19/22 14:26 Received: 01/21/22 08:30 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Tetrachloroethene
10100
ug/m3
151
219.6
01/29/2214:44
127-18-4
Tetrahydrofuran
2.0
ug/m3
1.1
1.83
01/28/22 21:29
109-99-9
Toluene
ND
ug/m3
1.4
1.83
01/28/22 21:29
108-88-3
1,2,4-Trichlorobenzene
ND
ug/m3
13.8
1.83
01/28/22 21:29
120-82-1
1,1,1-Trichloroethane
ND
ug/m3
2.0
1.83
01/28/22 21:29
71-55-6
1,1,2-Trichloroethane
ND
ug/m3
1.0
1.83
01/28/22 21:29
79-00-5
Trichloroethene
9.5
ug/m3
1.0
1.83
01/28/22 21:29
79-01-6
Trichlorofluoromethane
ND
ug/m3
2.1
1.83
01/28/22 21:29
75-69-4
1,1,2-Trichlorotrifluoroethane
ND
ug/m3
2.9
1.83
01/28/22 21:29
76-13-1
1,2,4-Trimethylbenzene
ND
ug/m3
1.8
1.83
01/28/22 21:29
95-63-6
1,3,5-Trimethylbenzene
ND
ug/m3
1.8
1.83
01/28/22 21:29
108-67-8
Vinyl acetate
ND
ug/m3
1.3
1.83
01/28/22 21:29
108-05-4
Vinyl chloride
ND
ug/m3
0.48
1.83
01/28/22 21:29
75-01-4
m&p-Xylene
ND
ug/m3
3.2
1.83
01/28/22 21:29
179601-23-1
o-Xylene
ND
ug/m3
1.6
1.83
01/28/22 21:29
95-47-6
Date: 02/08/2022 06:42 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 5 of 42

lceAnalyircal
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Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
Sample: SSV-15 Lab ID: 92583866002 Collected: 01/19/22 17:03 Received: 01/21/22 08:30 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Acetone
112
ug/m3
9.7
1.61
01/28/22 21:57
67-64-1
Benzene
ND
ug/m3
0.52
1.61
01/28/22 21:57
71-43-2
Benzyl chloride
ND
ug/m3
4.2
1.61
01/28/22 21:57
100-44-7
Bromodichloromethane
ND
ug/m3
2.2
1.61
01/28/22 21:57
75-27-4
Bromoform
ND
ug/m3
8.5
1.61
01/28/22 21:57
75-25-2
Bromomethane
ND
ug/m3
1.3
1.61
01/28/22 21:57
74-83-9
1,3-Butadiene
ND
ug/m3
0.72
1.61
01/28/22 21:57
106-99-0
2-Butanone (MEK)
5.0
ug/m3
4.8
1.61
01/28/22 21:57
78-93-3
Carbon disulfide
3.0
ug/m3
1.0
1.61
01/28/22 21:57
75-15-0
Carbon tetrachloride
ND
ug/m3
2.1
1.61
01/28/22 21:57
56-23-5
Chlorobenzene
ND
ug/m3
1.5
1.61
01/28/22 21:57
108-90-7
Chloroethane
ND
ug/m3
0.86
1.61
01/28/22 21:57
75-00-3
Chloroform
2.9
ug/m3
0.80
1.61
01/28/22 21:57
67-66-3
Chloromethane
ND
ug/m3
0.68
1.61
01/28/22 21:57
74-87-3
Cyclohexane
ND
ug/m3
2.8
1.61
01/28/22 21:57
110-82-7
Dibromochloromethane
ND
ug/m3
2.8
1.61
01/28/22 21:57
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/m3
1.3
1.61
01/28/22 21:57
106-93-4
1,2-Dichlorobenzene
ND
ug/m3
4.9
1.61
01/28/22 21:57
95-50-1
1,3-Dichlorobenzene
ND
ug/m3
4.9
1.61
01/28/22 21:57
541-73-1
1,4-Dichlorobenzene
ND
ug/m3
4.9
1.61
01/28/22 21:57
106-46-7
Dichlorodifluoromethane
2.7
ug/m3
1.6
1.61
01/28/22 21:57
75-71-8
1,1-Dichloroethane
ND
ug/m3
1.3
1.61
01/28/22 21:57
75-34-3
1,2-Dichloroethane
ND
ug/m3
1.3
1.61
01/28/22 21:57
107-06-2
1,1-Dichloroethene
ND
ug/m3
1.3
1.61
01/28/22 21:57
75-35-4
cis-1,2-Dichloroethene
ND
ug/m3
1.3
1.61
01/28/22 21:57
156-59-2
trans-1,2-Dichloroethene
ND
ug/m3
1.3
1.61
01/28/22 21:57
156-60-5
1,2-Dichloropropene
ND
ug/m3
1.5
1.61
01/28/22 21:57
78-87-5
cis-1,3-Dichloropropene
ND
ug/m3
3.7
1.61
01/28/22 21:57
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/m3
3.7
1.61
01/28/22 21:57
10061-02-6
Dichlorotetrafluoroethane
ND
ug/m3
2.3
1.61
01/28/22 21:57
76-14-2
Ethanol
174
ug/m3
3.1
1.61
01/28/22 21:57
64-17-5
Ethyl acetate
ND
ug/m3
1.2
1.61
01/28/22 21:57
141-78-6
Ethylbenzene
ND
ug/m3
1.4
1.61
01/28/22 21:57
100-41-4
4-Ethyltoluene
ND
ug/m3
4.0
1.61
01/28/22 21:57
622-96-8
n-Heptane
1.6
ug/m3
1.3
1.61
01/28/22 21:57
142-82-5
Hexachloro-1,3-butadiene
ND
ug/m3
8.7
1.61
01/28/22 21:57
87-68-3
n-Hexane
3.0
ug/m3
1.2
1.61
01/28/22 21:57
110-54-3
2-Hexanone
ND
ug/m3
6.7
1.61
01/28/22 21:57
591-78-6
Methylene Chloride
ND
ug/m3
5.7
1.61
01/28/22 21:57
75-09-2
4-Methyl-2-pentanone (MIBK)
ND
ug/m3
6.7
1.61
01/28/22 21:57
108-10-1
Methyl-tert-butyl ether
ND
ug/m3
5.9
1.61
01/28/22 21:57
1634-04-4
Naphthalene
ND
ug/m3
4.3
1.61
01/28/22 21:57
91-20-3
2-Propanol
4.5
ug/m3
4.0
1.61
01/28/22 21:57
67-63-0
Propylene
10.8
ug/m3
1.4
1.61
01/28/22 21:57
115-07-1
Styrene
3.0
ug/m3
1.4
1.61
01/28/22 21:57
100-42-5
1,1,2,2-Tetrachloroethane
ND
ug/m3
2.3
1.61
01/28/22 21:57
79-34-5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 02/08/2022 06:42 PM without the written consent of Pace Analytical Services, LLC. Page 6 of 42

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
Sample: SSV-15 Lab ID: 92583866002 Collected: 01/19/22 17:03 Received: 01/21/22 08:30 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Tetrachloroethene
254
ug/m3
1.1
1.61
01/31/2214:57
127-18-4
Tetrahydrofuran
ND
ug/m3
0.97
1.61
01/28/22 21:57
109-99-9
Toluene
ND
ug/m3
1.2
1.61
01/28/22 21:57
108-88-3
1,2,4-Trichlorobenzene
ND
ug/m3
12.1
1.61
01/28/22 21:57
120-82-1
1,1,1-Trichloroethane
ND
ug/m3
1.8
1.61
01/28/22 21:57
71-55-6
1,1,2-Trichloroethane
ND
ug/m3
0.89
1.61
01/28/22 21:57
79-00-5
Trichloroethene
ND
ug/m3
0.88
1.61
01/28/22 21:57
79-01-6
Trichlorofluoromethane
4.1
ug/m3
1.8
1.61
01/28/22 21:57
75-69-4
1,1,2-Trichlorotrifluoroethane
ND
ug/m3
2.5
1.61
01/28/22 21:57
76-13-1
1,2,4-Trimethylbenzene
ND
ug/m3
1.6
1.61
01/28/22 21:57
95-63-6
1,3,5-Trimethylbenzene
ND
ug/m3
1.6
1.61
01/28/22 21:57
108-67-8
Vinyl acetate
ND
ug/m3
1.2
1.61
01/28/22 21:57
108-05-4
Vinyl chloride
ND
ug/m3
0.42
1.61
01/28/22 21:57
75-01-4
m&p-Xylene
ND
ug/m3
2.8
1.61
01/28/22 21:57
179601-23-1
o-Xylene
ND
ug/m3
1.4
1.61
01/28/22 21:57
95-47-6
Date: 02/08/2022 06:42 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 7 of 42

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
Sample: SSV-16 Lab ID: 92583866003 Collected: 01/19/22 16:00 Received: 01/21/22 08:30 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Acetone
29.1
ug/m3
10.6
1.75
01/28/22 22:26
67-64-1
Benzene
ND
ug/m3
0.57
1.75
01/28/22 22:26
71-43-2
Benzyl chloride
ND
ug/m3
4.6
1.75
01/28/22 22:26
100-44-7
Bromodichloromethane
ND
ug/m3
2.4
1.75
01/28/22 22:26
75-27-4
Bromoform
ND
ug/m3
9.2
1.75
01/28/22 22:26
75-25-2
Bromomethane
ND
ug/m3
1.4
1.75
01/28/22 22:26
74-83-9
1,3-Butadiene
ND
ug/m3
0.79
1.75
01/28/22 22:26
106-99-0
2-Butanone (MEK)
ND
ug/m3
5.2
1.75
01/28/22 22:26
78-93-3
Carbon disulfide
ND
ug/m3
1.1
1.75
01/28/22 22:26
75-15-0
Carbon tetrachloride
ND
ug/m3
2.2
1.75
01/28/22 22:26
56-23-5
Chlorobenzene
ND
ug/m3
1.6
1.75
01/28/22 22:26
108-90-7
Chloroethane
ND
ug/m3
0.94
1.75
01/28/22 22:26
75-00-3
Chloroform
ND
ug/m3
0.87
1.75
01/28/22 22:26
67-66-3
Chloromethane
ND
ug/m3
0.74
1.75
01/28/22 22:26
74-87-3
Cyclohexane
ND
ug/m3
3.1
1.75
01/28/22 22:26
110-82-7
Dibromochloromethane
ND
ug/m3
3.0
1.75
01/28/22 22:26
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/m3
1.4
1.75
01/28/22 22:26
106-93-4
1,2-Dichlorobenzene
ND
ug/m3
5.4
1.75
01/28/22 22:26
95-50-1
1,3-Dichlorobenzene
ND
ug/m3
5.4
1.75
01/28/22 22:26
541-73-1
1,4-Dichlorobenzene
ND
ug/m3
5.4
1.75
01/28/22 22:26
106-46-7
Dichlorodifluoromethane
4.0
ug/m3
1.8
1.75
01/28/22 22:26
75-71-8
1,1-Dichloroethane
ND
ug/m3
1.4
1.75
01/28/22 22:26
75-34-3
1,2-Dichloroethane
ND
ug/m3
1.4
1.75
01/28/22 22:26
107-06-2
1,1-Dichloroethene
ND
ug/m3
1.4
1.75
01/28/22 22:26
75-35-4
cis-1,2-Dichloroethene
ND
ug/m3
1.4
1.75
01/28/22 22:26
156-59-2
trans-1,2-Dichloroethene
ND
ug/m3
1.4
1.75
01/28/22 22:26
156-60-5
1,2-Dichloropropene
ND
ug/m3
1.6
1.75
01/28/22 22:26
78-87-5
cis-1,3-Dichloropropene
ND
ug/m3
4.0
1.75
01/28/22 22:26
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/m3
4.0
1.75
01/28/22 22:26
10061-02-6
Dichlorotetrafluoroethane
ND
ug/m3
2.5
1.75
01/28/22 22:26
76-14-2
Ethanol
167
ug/m3
3.4
1.75
01/28/22 22:26
64-17-5
Ethyl acetate
ND
ug/m3
1.3
1.75
01/28/22 22:26
141-78-6
Ethylbenzene
ND
ug/m3
1.5
1.75
01/28/22 22:26
100-41-4
4-Ethyltoluene
ND
ug/m3
4.4
1.75
01/28/22 22:26
622-96-8
n-Heptane
ND
ug/m3
1.5
1.75
01/28/22 22:26
142-82-5
Hexachloro-1,3-butadiene
ND
ug/m3
9.5
1.75
01/28/22 22:26
87-68-3
n-Hexane
ND
ug/m3
1.3
1.75
01/28/22 22:26
110-54-3
2-Hexanone
ND
ug/m3
7.3
1.75
01/28/22 22:26
591-78-6
Methylene Chloride
ND
ug/m3
6.2
1.75
01/28/22 22:26
75-09-2
4-Methyl-2-pentanone (MIBK)
ND
ug/m3
7.3
1.75
01/28/22 22:26
108-10-1
Methyl-tert-butyl ether
ND
ug/m3
6.4
1.75
01/28/22 22:26
1634-04-4
Naphthalene
ND
ug/m3
4.7
1.75
01/28/22 22:26
91-20-3
2-Propanol
10.4
ug/m3
4.4
1.75
01/28/22 22:26
67-63-0
Propylene
ND
ug/m3
1.5
1.75
01/28/22 22:26
115-07-1
Styrene
ND
ug/m3
1.5
1.75
01/28/22 22:26
100-42-5
1,1,2,2-Tetrachloroethane
ND
ug/m3
2.4
1.75
01/28/22 22:26
79-34-5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 02/08/2022 06:42 PM without the written consent of Pace Analytical Services, LLC. Page 8 of 42

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
Sample: SSV-16 Lab ID: 92583866003 Collected: 01/19/22 16:00 Received: 01/21/22 08:30 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Tetrachloroethene
1160
ug/m3
12.1
17.5
01/29/2213:51
127-18-4
Tetrahydrofuran
3.0
ug/m3
1.0
1.75
01/28/22 22:26
109-99-9
Toluene
ND
ug/m3
1.3
1.75
01/28/22 22:26
108-88-3
1,2,4-Trichlorobenzene
ND
ug/m3
13.2
1.75
01/28/22 22:26
120-82-1
1,1,1-Trichloroethane
ND
ug/m3
1.9
1.75
01/28/22 22:26
71-55-6
1,1,2-Trichloroethane
ND
ug/m3
0.97
1.75
01/28/22 22:26
79-00-5
Trichloroethene
ND
ug/m3
0.96
1.75
01/28/22 22:26
79-01-6
Trichlorofluoromethane
ND
ug/m3
2.0
1.75
01/28/22 22:26
75-69-4
1,1,2-Trichlorotrifluoroethane
ND
ug/m3
2.7
1.75
01/28/22 22:26
76-13-1
1,2,4-Trimethylbenzene
14.8
ug/m3
1.7
1.75
01/28/22 22:26
95-63-6
1,3,5-Trimethylbenzene
2.7
ug/m3
1.7
1.75
01/28/22 22:26
108-67-8
Vinyl acetate
ND
ug/m3
1.3
1.75
01/28/22 22:26
108-05-4
Vinyl chloride
ND
ug/m3
0.46
1.75
01/28/22 22:26
75-01-4
m&p-Xylene
ND
ug/m3
3.1
1.75
01/28/22 22:26
179601-23-1
o-Xylene
ND
ug/m3
1.5
1.75
01/28/22 22:26
95-47-6
Date: 02/08/2022 06:42 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 9 of 42

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
Sample: SSV-17 Lab ID: 92583866004 Collected: 01/19/22 15:23 Received: 01/21/22 08:30 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Acetone
ND
ug/m3
2650
439.2
02/02/22 17:30
67-64-1
Benzene
ND
ug/m3
143
439.2
02/02/22 17:30
71-43-2
Benzyl chloride
ND
ug/m3
2310
439.2
02/02/22 17:30
100-44-7
Bromodichloromethane
ND
ug/m3
597
439.2
02/02/22 17:30
75-27-4
Bromoform
ND
ug/m3
2310
439.2
02/02/22 17:30
75-25-2
Bromomethane
ND
ug/m3
347
439.2
02/02/22 17:30
74-83-9
1,3-Butadiene
ND
ug/m3
198
439.2
02/02/22 17:30
106-99-0
2-Butanone (MEK)
ND
ug/m3
1320
439.2
02/02/22 17:30
78-93-3
Carbon disulfide
ND
ug/m3
278
439.2
02/02/22 17:30
75-15-0
Carbon tetrachloride
ND
ug/m3
562
439.2
02/02/22 17:30
56-23-5
Chlorobenzene
ND
ug/m3
411
439.2
02/02/22 17:30
108-90-7
Chloroethane
ND
ug/m3
589
439.2
02/02/22 17:30
75-00-3
Chloroform
ND
ug/m3
218
439.2
02/02/22 17:30
67-66-3
Chloromethane
ND
ug/m3
184
439.2
02/02/22 17:30
74-87-3
Cyclohexane
ND
ug/m3
769
439.2
02/02/22 17:30
110-82-7
Dibromochloromethane
ND
ug/m3
760
439.2
02/02/22 17:30
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/m3
343
439.2
02/02/22 17:30
106-93-4
1,2-Dichlorobenzene
ND
ug/m3
1340
439.2
02/02/22 17:30
95-50-1
1,3-Dichlorobenzene
ND
ug/m3
1340
439.2
02/02/22 17:30
541-73-1
1,4-Dichlorobenzene
ND
ug/m3
1340
439.2
02/02/22 17:30
106-46-7
Dichlorodifluoromethane
ND
ug/m3
444
439.2
02/02/22 17:30
75-71-8
1,1-Dichloroethane
ND
ug/m3
361
439.2
02/02/22 17:30
75-34-3
1,2-Dichloroethane
ND
ug/m3
361
439.2
02/02/22 17:30
107-06-2
1,1-Dichloroethene
ND
ug/m3
354
439.2
02/02/22 17:30
75-35-4
cis-1,2-Dichloroethene
ND
ug/m3
354
439.2
02/02/22 17:30
156-59-2
trans-1,2-Dichloroethene
ND
ug/m3
354
439.2
02/02/22 17:30
156-60-5
1,2-Dichloropropene
ND
ug/m3
412
439.2
02/02/22 17:30
78-87-5
cis-1,3-Dichloropropene
ND
ug/m3
1010
439.2
02/02/22 17:30
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/m3
1010
439.2
02/02/22 17:30
10061-02-6
Dichlorotetrafluoroethane
ND
ug/m3
624
439.2
02/02/22 17:30
76-14-2
Ethanol
ND
ug/m3
843
439.2
02/02/22 17:30
64-17-5
Ethyl acetate
ND
ug/m3
322
439.2
02/02/22 17:30
141-78-6
Ethylbenzene
ND
ug/m3
388
439.2
02/02/22 17:30
100-41-4
4-Ethyltoluene
ND
ug/m3
1100
439.2
02/02/22 17:30
622-96-8
n-Heptane
ND
ug/m3
366
439.2
02/02/22 17:30
142-82-5
Hexachloro-1,3-butadiene
ND
ug/m3
2380
439.2
02/02/22 17:30
87-68-3
n-Hexane
ND
ug/m3
314
439.2
02/02/22 17:30
110-54-3
2-Hexanone
ND
ug/m3
1830
439.2
02/02/22 17:30
591-78-6
Methylene Chloride
ND
ug/m3
1550
439.2
02/02/22 17:30
75-09-2
4-Methyl-2-pentanone (MIBK)
ND
ug/m3
1830
439.2
02/02/22 17:30
108-10-1
Methyl-tert-butyl ether
ND
ug/m3
1610
439.2
02/02/22 17:30
1634-04-4
Naphthalene
ND
ug/m3
2340
439.2
02/02/22 17:30
91-20-3
2-Propanol
ND
ug/m3
1100
439.2
02/02/22 17:30
67-63-0
Propylene
ND
ug/m3
384
439.2
02/02/22 17:30
115-07-1
Styrene
ND
ug/m3
951
439.2
02/02/22 17:30
100-42-5
1,1,2,2-Tetrachloroethane
ND
ug/m3
615
439.2
02/02/22 17:30
79-34-5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 02/08/2022 06:42 PM without the written consent of Pace Analytical Services, LLC. Page 10 of 42

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
Sample: SSV-17 Lab ID: 92583866004 Collected: 01/19/22 15:23 Received: 01/21/22 08:30 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Tetrachloroethene
10500
ug/m3
303
439.2
02/02/22 17:30
127-18-4
Tetrahydrofuran
ND
ug/m3
264
439.2
02/02/22 17:30
109-99-9
Toluene
ND
ug/m3
336
439.2
02/02/22 17:30
108-88-3
1,2,4-Trichlorobenzene
ND
ug/m3
6630
439.2
02/02/22 17:30
120-82-1
1,1,1-Trichloroethane
ND
ug/m3
488
439.2
02/02/22 17:30
71-55-6
1,1,2-Trichloroethane
ND
ug/m3
244
439.2
02/02/22 17:30
79-00-5
Trichloroethene
ND
ug/m3
240
439.2
02/02/22 17:30
79-01-6
Trichlorofluoromethane
ND
ug/m3
501
439.2
02/02/22 17:30
75-69-4
1,1,2-Trichlorotrifluoroethane
ND
ug/m3
685
439.2
02/02/22 17:30
76-13-1
1,2,4-Trimethylbenzene
ND
ug/m3
439
439.2
02/02/22 17:30
95-63-6
1,3,5-Trimethylbenzene
ND
ug/m3
439
439.2
02/02/22 17:30
108-67-8
Vinyl acetate
ND
ug/m3
314
439.2
02/02/22 17:30
108-05-4
Vinyl chloride
ND
ug/m3
114
439.2
02/02/22 17:30
75-01-4
m&p-Xylene
ND
ug/m3
777
439.2
02/02/22 17:30
179601-23-1
o-Xylene
ND
ug/m3
388
439.2
02/02/22 17:30
95-47-6
Date: 02/08/2022 06:42 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 11 of 42

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
Sample: SSV-18 Lab ID: 92583866005 Collected: 01/19/22 15:00 Received: 01/21/22 08:30 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Acetone
40.4
ug/m3
11.1
1.83
01/28/22 23:24
67-64-1
Benzene
ND
ug/m3
0.59
1.83
01/28/22 23:24
71-43-2
Benzyl chloride
ND
ug/m3
4.8
1.83
01/28/22 23:24
100-44-7
Bromodichloromethane
ND
ug/m3
2.5
1.83
01/28/22 23:24
75-27-4
Bromoform
ND
ug/m3
9.6
1.83
01/28/22 23:24
75-25-2
Bromomethane
ND
ug/m3
1.4
1.83
01/28/22 23:24
74-83-9
1,3-Butadiene
ND
ug/m3
0.82
1.83
01/28/22 23:24
106-99-0
2-Butanone (MEK)
5.8
ug/m3
5.5
1.83
01/28/22 23:24
78-93-3
Carbon disulfide
ND
ug/m3
1.2
1.83
01/28/22 23:24
75-15-0
Carbon tetrachloride
ND
ug/m3
2.3
1.83
01/28/22 23:24
56-23-5
Chlorobenzene
ND
ug/m3
1.7
1.83
01/28/22 23:24
108-90-7
Chloroethane
ND
ug/m3
0.98
1.83
01/28/22 23:24
75-00-3
Chloroform
ND
ug/m3
0.91
1.83
01/28/22 23:24
67-66-3
Chloromethane
ND
ug/m3
0.77
1.83
01/28/22 23:24
74-87-3
Cyclohexane
ND
ug/m3
3.2
1.83
01/28/22 23:24
110-82-7
Dibromochloromethane
ND
ug/m3
3.2
1.83
01/28/22 23:24
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/m3
1.4
1.83
01/28/22 23:24
106-93-4
1,2-Dichlorobenzene
ND
ug/m3
5.6
1.83
01/28/22 23:24
95-50-1
1,3-Dichlorobenzene
ND
ug/m3
5.6
1.83
01/28/22 23:24
541-73-1
1,4-Dichlorobenzene
ND
ug/m3
5.6
1.83
01/28/22 23:24
106-46-7
Dichlorodifluoromethane
2.8
ug/m3
1.8
1.83
01/28/22 23:24
75-71-8
1,1-Dichloroethane
ND
ug/m3
1.5
1.83
01/28/22 23:24
75-34-3
1,2-Dichloroethane
ND
ug/m3
1.5
1.83
01/28/22 23:24
107-06-2
1,1-Dichloroethene
ND
ug/m3
1.5
1.83
01/28/22 23:24
75-35-4
cis-1,2-Dichloroethene
ND
ug/m3
1.5
1.83
01/28/22 23:24
156-59-2
trans-1,2-Dichloroethene
ND
ug/m3
1.5
1.83
01/28/22 23:24
156-60-5
1,2-Dichloropropene
ND
ug/m3
1.7
1.83
01/28/22 23:24
78-87-5
cis-1,3-Dichloropropene
ND
ug/m3
4.2
1.83
01/28/22 23:24
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/m3
4.2
1.83
01/28/22 23:24
10061-02-6
Dichlorotetrafluoroethane
ND
ug/m3
2.6
1.83
01/28/22 23:24
76-14-2
Ethanol
175
ug/m3
3.5
1.83
01/28/22 23:24
64-17-5
Ethyl acetate
ND
ug/m3
1.3
1.83
01/28/22 23:24
141-78-6
Ethylbenzene
ND
ug/m3
1.6
1.83
01/28/22 23:24
100-41-4
4-Ethyltoluene
ND
ug/m3
4.6
1.83
01/28/22 23:24
622-96-8
n-Heptane
ND
ug/m3
1.5
1.83
01/28/22 23:24
142-82-5
Hexachloro-1,3-butadiene
ND
ug/m3
9.9
1.83
01/28/22 23:24
87-68-3
n-Hexane
ND
ug/m3
1.3
1.83
01/28/22 23:24
110-54-3
2-Hexanone
ND
ug/m3
7.6
1.83
01/28/22 23:24
591-78-6
Methylene Chloride
ND
ug/m3
6.5
1.83
01/28/22 23:24
75-09-2
4-Methyl-2-pentanone (MIBK)
ND
ug/m3
7.6
1.83
01/28/22 23:24
108-10-1
Methyl-tert-butyl ether
ND
ug/m3
6.7
1.83
01/28/22 23:24
1634-04-4
Naphthalene
ND
ug/m3
4.9
1.83
01/28/22 23:24
91-20-3
2-Propanol
4.8
ug/m3
4.6
1.83
01/28/22 23:24
67-63-0
Propylene
ND
ug/m3
1.6
1.83
01/28/22 23:24
115-07-1
Styrene
ND
ug/m3
1.6
1.83
01/28/22 23:24
100-42-5
1,1,2,2-Tetrachloroethane
ND
ug/m3
2.6
1.83
01/28/22 23:24
79-34-5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 02/08/2022 06:42 PM without the written consent of Pace Analytical Services, LLC. Page 12 of 42

lceAnalyircal
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Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
Sample: SSV-18 Lab ID: 92583866005 Collected: 01/19/22 15:00 Received: 01/21/22 08:30 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Tetrachloroethene
105
ug/m3
1.3
1.83
01/31/2215:31
127-18-4
Tetrahydrofuran
ND
ug/m3
1.1
1.83
01/28/22 23:24
109-99-9
Toluene
ND
ug/m3
1.4
1.83
01/28/22 23:24
108-88-3
1,2,4-Trichlorobenzene
ND
ug/m3
13.8
1.83
01/28/22 23:24
120-82-1
1,1,1-Trichloroethane
ND
ug/m3
2.0
1.83
01/28/22 23:24
71-55-6
1,1,2-Trichloroethane
ND
ug/m3
1.0
1.83
01/28/22 23:24
79-00-5
Trichloroethene
ND
ug/m3
1.0
1.83
01/28/22 23:24
79-01-6
Trichlorofluoromethane
ND
ug/m3
2.1
1.83
01/28/22 23:24
75-69-4
1,1,2-Trichlorotrifluoroethane
ND
ug/m3
2.9
1.83
01/28/22 23:24
76-13-1
1,2,4-Trimethylbenzene
ND
ug/m3
1.8
1.83
01/28/22 23:24
95-63-6
1,3,5-Trimethylbenzene
ND
ug/m3
1.8
1.83
01/28/22 23:24
108-67-8
Vinyl acetate
ND
ug/m3
1.3
1.83
01/28/22 23:24
108-05-4
Vinyl chloride
ND
ug/m3
0.48
1.83
01/28/22 23:24
75-01-4
m&p-Xylene
ND
ug/m3
3.2
1.83
01/28/22 23:24
179601-23-1
o-Xylene
ND
ug/m3
1.6
1.83
01/28/22 23:24
95-47-6
Date: 02/08/2022 06:42 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 13 of 42

lceAnalyircal
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Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
Sample: SSV-19 Lab ID: 92583866006 Collected: 01/19/22 14:17 Received: 01/21/22 08:30 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Acetone
73.5
ug/m3
10.6
1.75
01/28/22 23:52
67-64-1
Benzene
ND
ug/m3
0.57
1.75
01/28/22 23:52
71-43-2
Benzyl chloride
ND
ug/m3
4.6
1.75
01/28/22 23:52
100-44-7
Bromodichloromethane
ND
ug/m3
2.4
1.75
01/28/22 23:52
75-27-4
Bromoform
ND
ug/m3
9.2
1.75
01/28/22 23:52
75-25-2
Bromomethane
ND
ug/m3
1.4
1.75
01/28/22 23:52
74-83-9
1,3-Butadiene
ND
ug/m3
0.79
1.75
01/28/22 23:52
106-99-0
2-Butanone (MEK)
13.5
ug/m3
5.2
1.75
01/28/22 23:52
78-93-3
Carbon disulfide
ND
ug/m3
1.1
1.75
01/28/22 23:52
75-15-0
Carbon tetrachloride
ND
ug/m3
2.2
1.75
01/28/22 23:52
56-23-5
Chlorobenzene
ND
ug/m3
1.6
1.75
01/28/22 23:52
108-90-7
Chloroethane
ND
ug/m3
0.94
1.75
01/28/22 23:52
75-00-3
Chloroform
3.4
ug/m3
0.87
1.75
01/28/22 23:52
67-66-3
Chloromethane
ND
ug/m3
0.74
1.75
01/28/22 23:52
74-87-3
Cyclohexane
ND
ug/m3
3.1
1.75
01/28/22 23:52
110-82-7
Dibromochloromethane
ND
ug/m3
3.0
1.75
01/28/22 23:52
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/m3
1.4
1.75
01/28/22 23:52
106-93-4
1,2-Dichlorobenzene
ND
ug/m3
5.4
1.75
01/28/22 23:52
95-50-1
1,3-Dichlorobenzene
ND
ug/m3
5.4
1.75
01/28/22 23:52
541-73-1
1,4-Dichlorobenzene
ND
ug/m3
5.4
1.75
01/28/22 23:52
106-46-7
Dichlorodifluoromethane
3.1
ug/m3
1.8
1.75
01/28/22 23:52
75-71-8
1,1-Dichloroethane
ND
ug/m3
1.4
1.75
01/28/22 23:52
75-34-3
1,2-Dichloroethane
ND
ug/m3
1.4
1.75
01/28/22 23:52
107-06-2
1,1-Dichloroethene
ND
ug/m3
1.4
1.75
01/28/22 23:52
75-35-4
cis-1,2-Dichloroethene
ND
ug/m3
1.4
1.75
01/28/22 23:52
156-59-2
trans-1,2-Dichloroethene
ND
ug/m3
1.4
1.75
01/28/22 23:52
156-60-5
1,2-Dichloropropene
ND
ug/m3
1.6
1.75
01/28/22 23:52
78-87-5
cis-1,3-Dichloropropene
ND
ug/m3
4.0
1.75
01/28/22 23:52
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/m3
4.0
1.75
01/28/22 23:52
10061-02-6
Dichlorotetrafluoroethane
ND
ug/m3
2.5
1.75
01/28/22 23:52
76-14-2
Ethanol
220
ug/m3
3.4
1.75
01/28/22 23:52
64-17-5
Ethyl acetate
7.6
ug/m3
1.3
1.75
01/28/22 23:52
141-78-6
Ethylbenzene
ND
ug/m3
1.5
1.75
01/28/22 23:52
100-41-4
4-Ethyltoluene
ND
ug/m3
4.4
1.75
01/28/22 23:52
622-96-8
n-Heptane
ND
ug/m3
1.5
1.75
01/28/22 23:52
142-82-5
Hexachloro-1,3-butadiene
ND
ug/m3
9.5
1.75
01/28/22 23:52
87-68-3
n-Hexane
1.8
ug/m3
1.3
1.75
01/28/22 23:52
110-54-3
2-Hexanone
ND
ug/m3
7.3
1.75
01/28/22 23:52
591-78-6
Methylene Chloride
ND
ug/m3
6.2
1.75
01/28/22 23:52
75-09-2
4-Methyl-2-pentanone (MIBK)
ND
ug/m3
7.3
1.75
01/28/22 23:52
108-10-1
Methyl-tert-butyl ether
ND
ug/m3
6.4
1.75
01/28/22 23:52
1634-04-4
Naphthalene
ND
ug/m3
4.7
1.75
01/28/22 23:52
91-20-3
2-Propanol
30.1
ug/m3
4.4
1.75
01/28/22 23:52
67-63-0
Propylene
ND
ug/m3
1.5
1.75
01/28/22 23:52
115-07-1
Styrene
ND
ug/m3
1.5
1.75
01/28/22 23:52
100-42-5
1,1,2,2-Tetrachloroethane
ND
ug/m3
2.4
1.75
01/28/22 23:52
79-34-5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 02/08/2022 06:42 PM without the written consent of Pace Analytical Services, LLC. Page 14 of 42

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
Sample: SSV-19 Lab ID: 92583866006 Collected: 01/19/22 14:17 Received: 01/21/22 08:30 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Tetrachloroethene
4020
ug/m3
36.2
52.5
01/29/2214:18
127-18-4
Tetrahydrofuran
ND
ug/m3
1.0
1.75
01/28/22 23:52
109-99-9
Toluene
ND
ug/m3
1.3
1.75
01/28/22 23:52
108-88-3
1,2,4-Trichlorobenzene
ND
ug/m3
13.2
1.75
01/28/22 23:52
120-82-1
1,1,1-Trichloroethane
ND
ug/m3
1.9
1.75
01/28/22 23:52
71-55-6
1,1,2-Trichloroethane
ND
ug/m3
0.97
1.75
01/28/22 23:52
79-00-5
Trichloroethene
ND
ug/m3
0.96
1.75
01/28/22 23:52
79-01-6
Trichlorofluoromethane
ND
ug/m3
2.0
1.75
01/28/22 23:52
75-69-4
1,1,2-Trichlorotrifluoroethane
ND
ug/m3
2.7
1.75
01/28/22 23:52
76-13-1
1,2,4-Trimethylbenzene
8.6
ug/m3
1.7
1.75
01/28/22 23:52
95-63-6
1,3,5-Trimethylbenzene
3.1
ug/m3
1.7
1.75
01/28/22 23:52
108-67-8
Vinyl acetate
ND
ug/m3
1.3
1.75
01/28/22 23:52
108-05-4
Vinyl chloride
ND
ug/m3
0.46
1.75
01/28/22 23:52
75-01-4
m&p-Xylene
ND
ug/m3
3.1
1.75
01/28/22 23:52
179601-23-1
o-Xylene
ND
ug/m3
1.5
1.75
01/28/22 23:52
95-47-6
Date: 02/08/2022 06:42 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 15 of 42

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
Sample: SSV-20 Lab ID: 92583866007 Collected: 01/19/22 14:03 Received: 01/21/22 08:30 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Acetone
ND
ug/m3
211
35
02/02/22 15:56
67-64-1
Benzene
ND
ug/m3
11.4
35
02/02/22 15:56
71-43-2
Benzyl chloride
ND
ug/m3
184
35
02/02/22 15:56
100-44-7
Bromodichloromethane
ND
ug/m3
47.6
35
02/02/22 15:56
75-27-4
Bromoform
ND
ug/m3
184
35
02/02/22 15:56
75-25-2
Bromomethane
ND
ug/m3
27.6
35
02/02/22 15:56
74-83-9
1,3-Butadiene
ND
ug/m3
15.8
35
02/02/22 15:56
106-99-0
2-Butanone (MEK)
ND
ug/m3
105
35
02/02/22 15:56
78-93-3
Carbon disulfide
ND
ug/m3
22.2
35
02/02/22 15:56
75-15-0
Carbon tetrachloride
ND
ug/m3
44.8
35
02/02/22 15:56
56-23-5
Chlorobenzene
ND
ug/m3
32.8
35
02/02/22 15:56
108-90-7
Chloroethane
ND
ug/m3
46.9
35
02/02/22 15:56
75-00-3
Chloroform
ND
ug/m3
17.4
35
02/02/22 15:56
67-66-3
Chloromethane
ND
ug/m3
14.7
35
02/02/22 15:56
74-87-3
Cyclohexane
ND
ug/m3
61.2
35
02/02/22 15:56
110-82-7
Dibromochloromethane
ND
ug/m3
60.6
35
02/02/22 15:56
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/m3
27.3
35
02/02/22 15:56
106-93-4
1,2-Dichlorobenzene
ND
ug/m3
107
35
02/02/22 15:56
95-50-1
1,3-Dichlorobenzene
ND
ug/m3
107
35
02/02/22 15:56
541-73-1
1,4-Dichlorobenzene
ND
ug/m3
107
35
02/02/22 15:56
106-46-7
Dichlorodifluoromethane
ND
ug/m3
35.4
35
02/02/22 15:56
75-71-8
1,1-Dichloroethane
ND
ug/m3
28.8
35
02/02/22 15:56
75-34-3
1,2-Dichloroethane
ND
ug/m3
28.8
35
02/02/22 15:56
107-06-2
1,1-Dichloroethene
ND
ug/m3
28.2
35
02/02/22 15:56
75-35-4
cis-1,2-Dichloroethene
ND
ug/m3
28.2
35
02/02/22 15:56
156-59-2
trans-1,2-Dichloroethene
ND
ug/m3
28.2
35
02/02/22 15:56
156-60-5
1,2-Dichloropropene
ND
ug/m3
32.9
35
02/02/22 15:56
78-87-5
cis-1,3-Dichloropropene
ND
ug/m3
80.8
35
02/02/22 15:56
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/m3
80.8
35
02/02/22 15:56
10061-02-6
Dichlorotetrafluoroethane
ND
ug/m3
49.7
35
02/02/22 15:56
76-14-2
Ethanol
ND
ug/m3
67.2
35
02/02/22 15:56
64-17-5
Ethyl acetate
ND
ug/m3
25.7
35
02/02/22 15:56
141-78-6
Ethylbenzene
ND
ug/m3
30.9
35
02/02/22 15:56
100-41-4
4-Ethyltoluene
ND
ug/m3
87.5
35
02/02/22 15:56
622-96-8
n-Heptane
ND
ug/m3
29.2
35
02/02/22 15:56
142-82-5
Hexachloro-1,3-butadiene
ND
ug/m3
190
35
02/02/22 15:56
87-68-3
n-Hexane
ND
ug/m3
25.1
35
02/02/22 15:56
110-54-3
2-Hexanone
ND
ug/m3
146
35
02/02/22 15:56
591-78-6
Methylene Chloride
ND
ug/m3
124
35
02/02/22 15:56
75-09-2
4-Methyl-2-pentanone (MIBK)
ND
ug/m3
146
35
02/02/22 15:56
108-10-1
Methyl-tert-butyl ether
ND
ug/m3
128
35
02/02/22 15:56
1634-04-4
Naphthalene
ND
ug/m3
186
35
02/02/22 15:56
91-20-3
2-Propanol
ND
ug/m3
87.5
35
02/02/22 15:56
67-63-0
Propylene
ND
ug/m3
30.6
35
02/02/22 15:56
115-07-1
Styrene
ND
ug/m3
75.8
35
02/02/22 15:56
100-42-5
1,1,2,2-Tetrachloroethane
ND
ug/m3
49.0
35
02/02/22 15:56
79-34-5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 02/08/2022 06:42 PM without the written consent of Pace Analytical Services, LLC. Page 16 of 42

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
Sample: SSV-20 Lab ID: 92583866007 Collected: 01/19/22 14:03 Received: 01/21/22 08:30 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Tetrachloroethene
1300
ug/m3
24.1
35
02/02/22 15:56
127-18-4
Tetrahydrofuran
ND
ug/m3
21.0
35
02/02/22 15:56
109-99-9
Toluene
ND
ug/m3
26.8
35
02/02/22 15:56
108-88-3
1,2,4-Trichlorobenzene
ND
ug/m3
528
35
02/02/22 15:56
120-82-1
1,1,1-Trichloroethane
ND
ug/m3
38.8
35
02/02/22 15:56
71-55-6
1,1,2-Trichloroethane
ND
ug/m3
19.4
35
02/02/22 15:56
79-00-5
Trichloroethene
ND
ug/m3
19.1
35
02/02/22 15:56
79-01-6
Trichlorofluoromethane
ND
ug/m3
39.9
35
02/02/22 15:56
75-69-4
1,1,2-Trichlorotrifluoroethane
ND
ug/m3
54.6
35
02/02/22 15:56
76-13-1
1,2,4-Trimethylbenzene
ND
ug/m3
35.0
35
02/02/22 15:56
95-63-6
1,3,5-Trimethylbenzene
ND
ug/m3
35.0
35
02/02/22 15:56
108-67-8
Vinyl acetate
ND
ug/m3
25.1
35
02/02/22 15:56
108-05-4
Vinyl chloride
ND
ug/m3
9.1
35
02/02/22 15:56
75-01-4
m&p-Xylene
ND
ug/m3
62.0
35
02/02/22 15:56
179601-23-1
o-Xylene
ND
ug/m3
30.9
35
02/02/22 15:56
95-47-6
Date: 02/08/2022 06:42 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 17 of 42

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
Sample: SSV-21 Lab ID: 92583866008 Collected: 01/19/22 12:55 Received: 01/21/22 08:30 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Acetone
ND
ug/m3
971
160.8
02/02/22 16:59
67-64-1
Benzene
ND
ug/m3
52.3
160.8
02/02/22 16:59
71-43-2
Benzyl chloride
ND
ug/m3
846
160.8
02/02/22 16:59
100-44-7
Bromodichloromethane
ND
ug/m3
219
160.8
02/02/22 16:59
75-27-4
Bromoform
ND
ug/m3
844
160.8
02/02/22 16:59
75-25-2
Bromomethane
ND
ug/m3
127
160.8
02/02/22 16:59
74-83-9
1,3-Butadiene
ND
ug/m3
72.4
160.8
02/02/22 16:59
106-99-0
2-Butanone (MEK)
ND
ug/m3
482
160.8
02/02/22 16:59
78-93-3
Carbon disulfide
ND
ug/m3
102
160.8
02/02/22 16:59
75-15-0
Carbon tetrachloride
ND
ug/m3
206
160.8
02/02/22 16:59
56-23-5
Chlorobenzene
ND
ug/m3
151
160.8
02/02/22 16:59
108-90-7
Chloroethane
ND
ug/m3
216
160.8
02/02/22 16:59
75-00-3
Chloroform
ND
ug/m3
79.8
160.8
02/02/22 16:59
67-66-3
Chloromethane
ND
ug/m3
67.5
160.8
02/02/22 16:59
74-87-3
Cyclohexane
ND
ug/m3
281
160.8
02/02/22 16:59
110-82-7
Dibromochloromethane
ND
ug/m3
278
160.8
02/02/22 16:59
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/m3
126
160.8
02/02/22 16:59
106-93-4
1,2-Dichlorobenzene
ND
ug/m3
492
160.8
02/02/22 16:59
95-50-1
1,3-Dichlorobenzene
ND
ug/m3
492
160.8
02/02/22 16:59
541-73-1
1,4-Dichlorobenzene
ND
ug/m3
492
160.8
02/02/22 16:59
106-46-7
Dichlorodifluoromethane
ND
ug/m3
162
160.8
02/02/22 16:59
75-71-8
1,1-Dichloroethane
ND
ug/m3
132
160.8
02/02/22 16:59
75-34-3
1,2-Dichloroethane
ND
ug/m3
132
160.8
02/02/22 16:59
107-06-2
1,1-Dichloroethene
ND
ug/m3
130
160.8
02/02/22 16:59
75-35-4
cis-1,2-Dichloroethene
ND
ug/m3
130
160.8
02/02/22 16:59
156-59-2
trans-1,2-Dichloroethene
ND
ug/m3
130
160.8
02/02/22 16:59
156-60-5
1,2-Dichloropropene
ND
ug/m3
151
160.8
02/02/22 16:59
78-87-5
cis-1,3-Dichloropropene
ND
ug/m3
371
160.8
02/02/22 16:59
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/m3
371
160.8
02/02/22 16:59
10061-02-6
Dichlorotetrafluoroethane
ND
ug/m3
228
160.8
02/02/22 16:59
76-14-2
Ethanol
ND
ug/m3
309
160.8
02/02/22 16:59
64-17-5
Ethyl acetate
ND
ug/m3
118
160.8
02/02/22 16:59
141-78-6
Ethylbenzene
ND
ug/m3
142
160.8
02/02/22 16:59
100-41-4
4-Ethyltoluene
ND
ug/m3
402
160.8
02/02/22 16:59
622-96-8
n-Heptane
ND
ug/m3
134
160.8
02/02/22 16:59
142-82-5
Hexachloro-1,3-butadiene
ND
ug/m3
872
160.8
02/02/22 16:59
87-68-3
n-Hexane
ND
ug/m3
115
160.8
02/02/22 16:59
110-54-3
2-Hexanone
ND
ug/m3
669
160.8
02/02/22 16:59
591-78-6
Methylene Chloride
ND
ug/m3
568
160.8
02/02/22 16:59
75-09-2
4-Methyl-2-pentanone (MIBK)
ND
ug/m3
669
160.8
02/02/22 16:59
108-10-1
Methyl-tert-butyl ether
ND
ug/m3
589
160.8
02/02/22 16:59
1634-04-4
Naphthalene
ND
ug/m3
857
160.8
02/02/22 16:59
91-20-3
2-Propanol
ND
ug/m3
402
160.8
02/02/22 16:59
67-63-0
Propylene
ND
ug/m3
141
160.8
02/02/22 16:59
115-07-1
Styrene
ND
ug/m3
348
160.8
02/02/22 16:59
100-42-5
1,1,2,2-Tetrachloroethane
ND
ug/m3
225
160.8
02/02/22 16:59
79-34-5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 02/08/2022 06:42 PM without the written consent of Pace Analytical Services, LLC. Page 18 of 42

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
Sample: SSV-21 Lab ID: 92583866008 Collected: 01/19/22 12:55 Received: 01/21/22 08:30 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Tetrachloroethene
3750
ug/m3
111
160.8
02/02/22 16:59
127-18-4
Tetrahydrofuran
ND
ug/m3
96.5
160.8
02/02/22 16:59
109-99-9
Toluene
ND
ug/m3
123
160.8
02/02/22 16:59
108-88-3
1,2,4-Trichlorobenzene
ND
ug/m3
2430
160.8
02/02/22 16:59
120-82-1
1,1,1-Trichloroethane
ND
ug/m3
178
160.8
02/02/22 16:59
71-55-6
1,1,2-Trichloroethane
ND
ug/m3
89.2
160.8
02/02/22 16:59
79-00-5
Trichloroethene
ND
ug/m3
87.8
160.8
02/02/22 16:59
79-01-6
Trichlorofluoromethane
ND
ug/m3
183
160.8
02/02/22 16:59
75-69-4
1,1,2-Trichlorotrifluoroethane
ND
ug/m3
251
160.8
02/02/22 16:59
76-13-1
1,2,4-Trimethylbenzene
ND
ug/m3
161
160.8
02/02/22 16:59
95-63-6
1,3,5-Trimethylbenzene
ND
ug/m3
161
160.8
02/02/22 16:59
108-67-8
Vinyl acetate
ND
ug/m3
115
160.8
02/02/22 16:59
108-05-4
Vinyl chloride
ND
ug/m3
41.8
160.8
02/02/22 16:59
75-01-4
m&p-Xylene
ND
ug/m3
285
160.8
02/02/22 16:59
179601-23-1
o-Xylene
ND
ug/m3
142
160.8
02/02/22 16:59
95-47-6
Date: 02/08/2022 06:42 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 19 of 42

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
Sample: SSV-22 Lab ID: 92583866009 Collected: 01/19/22 11:39 Received: 01/21/22 08:30 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Acetone
ND
ug/m3
317
52.5
02/02/22 16:28
67-64-1
Benzene
ND
ug/m3
17.1
52.5
02/02/22 16:28
71-43-2
Benzyl chloride
ND
ug/m3
276
52.5
02/02/22 16:28
100-44-7
Bromodichloromethane
ND
ug/m3
71.4
52.5
02/02/22 16:28
75-27-4
Bromoform
ND
ug/m3
276
52.5
02/02/22 16:28
75-25-2
Bromomethane
ND
ug/m3
41.4
52.5
02/02/22 16:28
74-83-9
1,3-Butadiene
ND
ug/m3
23.6
52.5
02/02/22 16:28
106-99-0
2-Butanone (MEK)
ND
ug/m3
158
52.5
02/02/22 16:28
78-93-3
Carbon disulfide
ND
ug/m3
33.2
52.5
02/02/22 16:28
75-15-0
Carbon tetrachloride
ND
ug/m3
67.2
52.5
02/02/22 16:28
56-23-5
Chlorobenzene
ND
ug/m3
49.1
52.5
02/02/22 16:28
108-90-7
Chloroethane
ND
ug/m3
70.4
52.5
02/02/22 16:28
75-00-3
Chloroform
ND
ug/m3
26.0
52.5
02/02/22 16:28
67-66-3
Chloromethane
ND
ug/m3
22.0
52.5
02/02/22 16:28
74-87-3
Cyclohexane
ND
ug/m3
91.9
52.5
02/02/22 16:28
110-82-7
Dibromochloromethane
ND
ug/m3
90.8
52.5
02/02/22 16:28
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/m3
41.0
52.5
02/02/22 16:28
106-93-4
1,2-Dichlorobenzene
ND
ug/m3
161
52.5
02/02/22 16:28
95-50-1
1,3-Dichlorobenzene
ND
ug/m3
161
52.5
02/02/22 16:28
541-73-1
1,4-Dichlorobenzene
ND
ug/m3
161
52.5
02/02/22 16:28
106-46-7
Dichlorodifluoromethane
ND
ug/m3
53.0
52.5
02/02/22 16:28
75-71-8
1,1-Dichloroethane
ND
ug/m3
43.2
52.5
02/02/22 16:28
75-34-3
1,2-Dichloroethane
ND
ug/m3
43.2
52.5
02/02/22 16:28
107-06-2
1,1-Dichloroethene
ND
ug/m3
42.3
52.5
02/02/22 16:28
75-35-4
cis-1,2-Dichloroethene
ND
ug/m3
42.3
52.5
02/02/22 16:28
156-59-2
trans-1,2-Dichloroethene
ND
ug/m3
42.3
52.5
02/02/22 16:28
156-60-5
1,2-Dichloropropene
ND
ug/m3
49.3
52.5
02/02/22 16:28
78-87-5
cis-1,3-Dichloropropene
ND
ug/m3
121
52.5
02/02/22 16:28
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/m3
121
52.5
02/02/22 16:28
10061-02-6
Dichlorotetrafluoroethane
ND
ug/m3
74.6
52.5
02/02/22 16:28
76-14-2
Ethanol
ND
ug/m3
101
52.5
02/02/22 16:28
64-17-5
Ethyl acetate
ND
ug/m3
38.5
52.5
02/02/22 16:28
141-78-6
Ethylbenzene
ND
ug/m3
46.4
52.5
02/02/22 16:28
100-41-4
4-Ethyltoluene
ND
ug/m3
131
52.5
02/02/22 16:28
622-96-8
n-Heptane
ND
ug/m3
43.7
52.5
02/02/22 16:28
142-82-5
Hexachloro-1,3-butadiene
ND
ug/m3
285
52.5
02/02/22 16:28
87-68-3
n-Hexane
ND
ug/m3
37.6
52.5
02/02/22 16:28
110-54-3
2-Hexanone
ND
ug/m3
218
52.5
02/02/22 16:28
591-78-6
Methylene Chloride
ND
ug/m3
185
52.5
02/02/22 16:28
75-09-2
4-Methyl-2-pentanone (MIBK)
ND
ug/m3
218
52.5
02/02/22 16:28
108-10-1
Methyl-tert-butyl ether
ND
ug/m3
192
52.5
02/02/22 16:28
1634-04-4
Naphthalene
ND
ug/m3
280
52.5
02/02/22 16:28
91-20-3
2-Propanol
ND
ug/m3
131
52.5
02/02/22 16:28
67-63-0
Propylene
ND
ug/m3
45.9
52.5
02/02/22 16:28
115-07-1
Styrene
ND
ug/m3
114
52.5
02/02/22 16:28
100-42-5
1,1,2,2-Tetrachloroethane
ND
ug/m3
73.5
52.5
02/02/22 16:28
79-34-5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 02/08/2022 06:42 PM without the written consent of Pace Analytical Services, LLC. Page 20 of 42

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
Sample: SSV-22 Lab ID: 92583866009 Collected: 01/19/22 11:39 Received: 01/21/22 08:30 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Tetrachloroethene
1710
ug/m3
36.2
52.5
02/02/22 16:28
127-18-4
Tetrahydrofuran
ND
ug/m3
31.5
52.5
02/02/22 16:28
109-99-9
Toluene
ND
ug/m3
40.2
52.5
02/02/22 16:28
108-88-3
1,2,4-Trichlorobenzene
ND
ug/m3
792
52.5
02/02/22 16:28
120-82-1
1,1,1-Trichloroethane
ND
ug/m3
58.3
52.5
02/02/22 16:28
71-55-6
1,1,2-Trichloroethane
ND
ug/m3
29.1
52.5
02/02/22 16:28
79-00-5
Trichloroethene
ND
ug/m3
28.7
52.5
02/02/22 16:28
79-01-6
Trichlorofluoromethane
ND
ug/m3
59.8
52.5
02/02/22 16:28
75-69-4
1,1,2-Trichlorotrifluoroethane
ND
ug/m3
81.9
52.5
02/02/22 16:28
76-13-1
1,2,4-Trimethylbenzene
ND
ug/m3
52.4
52.5
02/02/22 16:28
95-63-6
1,3,5-Trimethylbenzene
ND
ug/m3
52.4
52.5
02/02/22 16:28
108-67-8
Vinyl acetate
ND
ug/m3
37.6
52.5
02/02/22 16:28
108-05-4
Vinyl chloride
ND
ug/m3
13.6
52.5
02/02/22 16:28
75-01-4
m&p-Xylene
ND
ug/m3
92.9
52.5
02/02/22 16:28
179601-23-1
o-Xylene
ND
ug/m3
46.4
52.5
02/02/22 16:28
95-47-6
Date: 02/08/2022 06:42 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 21 of 42

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
Sample: SSV-23 Lab ID: 92583866010 Collected: 01/19/22 11:41 Received: 01/21/22 08:30 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Acetone
ND
ug/m3
52.8
8.75
02/02/22 15:25
67-64-1
Benzene
ND
ug/m3
2.8
8.75
02/02/22 15:25
71-43-2
Benzyl chloride
ND
ug/m3
46.0
8.75
02/02/22 15:25
100-44-7
Bromodichloromethane
ND
ug/m3
11.9
8.75
02/02/22 15:25
75-27-4
Bromoform
ND
ug/m3
45.9
8.75
02/02/22 15:25
75-25-2
Bromomethane
ND
ug/m3
6.9
8.75
02/02/22 15:25
74-83-9
1,3-Butadiene
ND
ug/m3
3.9
8.75
02/02/22 15:25
106-99-0
2-Butanone (MEK)
ND
ug/m3
26.2
8.75
02/02/22 15:25
78-93-3
Carbon disulfide
ND
ug/m3
5.5
8.75
02/02/22 15:25
75-15-0
Carbon tetrachloride
ND
ug/m3
11.2
8.75
02/02/22 15:25
56-23-5
Chlorobenzene
ND
ug/m3
8.2
8.75
02/02/22 15:25
108-90-7
Chloroethane
ND
ug/m3
11.7
8.75
02/02/22 15:25
75-00-3
Chloroform
ND
ug/m3
4.3
8.75
02/02/22 15:25
67-66-3
Chloromethane
ND
ug/m3
3.7
8.75
02/02/22 15:25
74-87-3
Cyclohexane
ND
ug/m3
15.3
8.75
02/02/22 15:25
110-82-7
Dibromochloromethane
ND
ug/m3
15.1
8.75
02/02/22 15:25
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/m3
6.8
8.75
02/02/22 15:25
106-93-4
1,2-Dichlorobenzene
ND
ug/m3
26.8
8.75
02/02/22 15:25
95-50-1
1,3-Dichlorobenzene
ND
ug/m3
26.8
8.75
02/02/22 15:25
541-73-1
1,4-Dichlorobenzene
ND
ug/m3
26.8
8.75
02/02/22 15:25
106-46-7
Dichlorodifluoromethane
ND
ug/m3
8.8
8.75
02/02/22 15:25
75-71-8
1,1-Dichloroethane
ND
ug/m3
7.2
8.75
02/02/22 15:25
75-34-3
1,2-Dichloroethane
ND
ug/m3
7.2
8.75
02/02/22 15:25
107-06-2
1,1-Dichloroethene
ND
ug/m3
7.1
8.75
02/02/22 15:25
75-35-4
cis-1,2-Dichloroethene
ND
ug/m3
7.1
8.75
02/02/22 15:25
156-59-2
trans-1,2-Dichloroethene
ND
ug/m3
7.1
8.75
02/02/22 15:25
156-60-5
1,2-Dichloropropene
ND
ug/m3
8.2
8.75
02/02/22 15:25
78-87-5
cis-1,3-Dichloropropene
ND
ug/m3
20.2
8.75
02/02/22 15:25
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/m3
20.2
8.75
02/02/22 15:25
10061-02-6
Dichlorotetrafluoroethane
ND
ug/m3
12.4
8.75
02/02/22 15:25
76-14-2
Ethanol
129
ug/m3
16.8
8.75
02/02/22 15:25
64-17-5
Ethyl acetate
ND
ug/m3
6.4
8.75
02/02/22 15:25
141-78-6
Ethylbenzene
ND
ug/m3
7.7
8.75
02/02/22 15:25
100-41-4
4-Ethyltoluene
ND
ug/m3
21.9
8.75
02/02/22 15:25
622-96-8
n-Heptane
ND
ug/m3
7.3
8.75
02/02/22 15:25
142-82-5
Hexachloro-1,3-butadiene
ND
ug/m3
47.4
8.75
02/02/22 15:25
87-68-3
n-Hexane
ND
ug/m3
6.3
8.75
02/02/22 15:25
110-54-3
2-Hexanone
ND
ug/m3
36.4
8.75
02/02/22 15:25
591-78-6
Methylene Chloride
ND
ug/m3
30.9
8.75
02/02/22 15:25
75-09-2
4-Methyl-2-pentanone (MIBK)
ND
ug/m3
36.4
8.75
02/02/22 15:25
108-10-1
Methyl-tert-butyl ether
ND
ug/m3
32.0
8.75
02/02/22 15:25
1634-04-4
Naphthalene
ND
ug/m3
46.6
8.75
02/02/22 15:25
91-20-3
2-Propanol
ND
ug/m3
21.9
8.75
02/02/22 15:25
67-63-0
Propylene
ND
ug/m3
7.7
8.75
02/02/22 15:25
115-07-1
Styrene
ND
ug/m3
18.9
8.75
02/02/22 15:25
100-42-5
1,1,2,2-Tetrachloroethane
ND
ug/m3
12.2
8.75
02/02/22 15:25
79-34-5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 02/08/2022 06:42 PM without the written consent of Pace Analytical Services, LLC. Page 22 of 42

lceAnalyircal
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Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
Sample: SSV-23 Lab ID: 92583866010 Collected: 01/19/22 11:41 Received: 01/21/22 08:30 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Tetrachloroethene
471
ug/m3
6.0
8.75
02/02/22 15:25
127-18-4
Tetrahydrofuran
ND
ug/m3
5.2
8.75
02/02/22 15:25
109-99-9
Toluene
ND
ug/m3
6.7
8.75
02/02/22 15:25
108-88-3
1,2,4-Trichlorobenzene
ND
ug/m3
132
8.75
02/02/22 15:25
120-82-1
1,1,1-Trichloroethane
ND
ug/m3
9.7
8.75
02/02/22 15:25
71-55-6
1,1,2-Trichloroethane
ND
ug/m3
4.9
8.75
02/02/22 15:25
79-00-5
Trichloroethene
8.7
ug/m3
4.8
8.75
02/02/22 15:25
79-01-6
Trichlorofluoromethane
ND
ug/m3
10
8.75
02/02/22 15:25
75-69-4
1,1,2-Trichlorotrifluoroethane
ND
ug/m3
13.6
8.75
02/02/22 15:25
76-13-1
1,2,4-Trimethylbenzene
ND
ug/m3
8.7
8.75
02/02/22 15:25
95-63-6
1,3,5-Trimethylbenzene
ND
ug/m3
8.7
8.75
02/02/22 15:25
108-67-8
Vinyl acetate
ND
ug/m3
6.3
8.75
02/02/22 15:25
108-05-4
Vinyl chloride
ND
ug/m3
2.3
8.75
02/02/22 15:25
75-01-4
m&p-Xylene
ND
ug/m3
15.5
8.75
02/02/22 15:25
179601-23-1
o-Xylene
ND
ug/m3
7.7
8.75
02/02/22 15:25
95-47-6
Date: 02/08/2022 06:42 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 23 of 42

lceAnalyircal
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Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
Sample: SSV-23 Dup. Lab ID: 92583866011 Collected: 01/19/22 11:41 Received: 01/21/22 08:30 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Acetone
ND
ug/m3
52.8
8.75
02/02/22 14:53
67-64-1
Benzene
ND
ug/m3
2.8
8.75
02/02/22 14:53
71-43-2
Benzyl chloride
ND
ug/m3
46.0
8.75
02/02/22 14:53
100-44-7
Bromodichloromethane
ND
ug/m3
11.9
8.75
02/02/22 14:53
75-27-4
Bromoform
ND
ug/m3
45.9
8.75
02/02/22 14:53
75-25-2
Bromomethane
ND
ug/m3
6.9
8.75
02/02/22 14:53
74-83-9
1,3-Butadiene
ND
ug/m3
3.9
8.75
02/02/22 14:53
106-99-0
2-Butanone (MEK)
ND
ug/m3
26.2
8.75
02/02/22 14:53
78-93-3
Carbon disulfide
ND
ug/m3
5.5
8.75
02/02/22 14:53
75-15-0
Carbon tetrachloride
ND
ug/m3
11.2
8.75
02/02/22 14:53
56-23-5
Chlorobenzene
ND
ug/m3
8.2
8.75
02/02/22 14:53
108-90-7
Chloroethane
ND
ug/m3
11.7
8.75
02/02/22 14:53
75-00-3
Chloroform
ND
ug/m3
4.3
8.75
02/02/22 14:53
67-66-3
Chloromethane
ND
ug/m3
3.7
8.75
02/02/22 14:53
74-87-3
Cyclohexane
ND
ug/m3
15.3
8.75
02/02/22 14:53
110-82-7
Dibromochloromethane
ND
ug/m3
15.1
8.75
02/02/22 14:53
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/m3
6.8
8.75
02/02/22 14:53
106-93-4
1,2-Dichlorobenzene
ND
ug/m3
26.8
8.75
02/02/22 14:53
95-50-1
1,3-Dichlorobenzene
ND
ug/m3
26.8
8.75
02/02/22 14:53
541-73-1
1,4-Dichlorobenzene
ND
ug/m3
26.8
8.75
02/02/22 14:53
106-46-7
Dichlorodifluoromethane
ND
ug/m3
8.8
8.75
02/02/22 14:53
75-71-8
1,1-Dichloroethane
ND
ug/m3
7.2
8.75
02/02/22 14:53
75-34-3
1,2-Dichloroethane
ND
ug/m3
7.2
8.75
02/02/22 14:53
107-06-2
1,1-Dichloroethene
ND
ug/m3
7.1
8.75
02/02/22 14:53
75-35-4
cis-1,2-Dichloroethene
ND
ug/m3
7.1
8.75
02/02/22 14:53
156-59-2
trans-1,2-Dichloroethene
ND
ug/m3
7.1
8.75
02/02/22 14:53
156-60-5
1,2-Dichloropropene
ND
ug/m3
8.2
8.75
02/02/22 14:53
78-87-5
cis-1,3-Dichloropropene
ND
ug/m3
20.2
8.75
02/02/22 14:53
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/m3
20.2
8.75
02/02/22 14:53
10061-02-6
Dichlorotetrafluoroethane
ND
ug/m3
12.4
8.75
02/02/22 14:53
76-14-2
Ethanol
155
ug/m3
16.8
8.75
02/02/22 14:53
64-17-5
Ethyl acetate
ND
ug/m3
6.4
8.75
02/02/22 14:53
141-78-6
Ethylbenzene
ND
ug/m3
7.7
8.75
02/02/22 14:53
100-41-4
4-Ethyltoluene
ND
ug/m3
21.9
8.75
02/02/22 14:53
622-96-8
n-Heptane
ND
ug/m3
7.3
8.75
02/02/22 14:53
142-82-5
Hexachloro-1,3-butadiene
ND
ug/m3
47.4
8.75
02/02/22 14:53
87-68-3
n-Hexane
ND
ug/m3
6.3
8.75
02/02/22 14:53
110-54-3
2-Hexanone
ND
ug/m3
36.4
8.75
02/02/22 14:53
591-78-6
Methylene Chloride
ND
ug/m3
30.9
8.75
02/02/22 14:53
75-09-2
4-Methyl-2-pentanone (MIBK)
ND
ug/m3
36.4
8.75
02/02/22 14:53
108-10-1
Methyl-tert-butyl ether
ND
ug/m3
32.0
8.75
02/02/22 14:53
1634-04-4
Naphthalene
ND
ug/m3
46.6
8.75
02/02/22 14:53
91-20-3
2-Propanol
ND
ug/m3
21.9
8.75
02/02/22 14:53
67-63-0
Propylene
ND
ug/m3
7.7
8.75
02/02/22 14:53
115-07-1
Styrene
ND
ug/m3
18.9
8.75
02/02/22 14:53
100-42-5
1,1,2,2-Tetrachloroethane
ND
ug/m3
12.2
8.75
02/02/22 14:53
79-34-5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 02/08/2022 06:42 PM without the written consent of Pace Analytical Services, LLC. Page 24 of 42

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
Sample: SSV-23 Dup. Lab ID: 92583866011 Collected: 01/19/22 11:41 Received: 01/21/22 08:30 Matrix: Air
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
T015 MSV AIR
Analytical Method: TO-15
Pace Analytical
Services - Minneapolis
Tetrachloroethene
454
ug/m3
6.0
8.75
02/02/22 14:53
127-18-4
Tetrahydrofuran
ND
ug/m3
5.2
8.75
02/02/22 14:53
109-99-9
Toluene
ND
ug/m3
6.7
8.75
02/02/22 14:53
108-88-3
1,2,4-Trichlorobenzene
ND
ug/m3
132
8.75
02/02/22 14:53
120-82-1
1,1,1-Trichloroethane
ND
ug/m3
9.7
8.75
02/02/22 14:53
71-55-6
1,1,2-Trichloroethane
ND
ug/m3
4.9
8.75
02/02/22 14:53
79-00-5
Trichloroethene
9.1
ug/m3
4.8
8.75
02/02/22 14:53
79-01-6
Trichlorofluoromethane
ND
ug/m3
10
8.75
02/02/22 14:53
75-69-4
1,1,2-Trichlorotrifluoroethane
ND
ug/m3
13.6
8.75
02/02/22 14:53
76-13-1
1,2,4-Trimethylbenzene
ND
ug/m3
8.7
8.75
02/02/22 14:53
95-63-6
1,3,5-Trimethylbenzene
ND
ug/m3
8.7
8.75
02/02/22 14:53
108-67-8
Vinyl acetate
ND
ug/m3
6.3
8.75
02/02/22 14:53
108-05-4
Vinyl chloride
ND
ug/m3
2.3
8.75
02/02/22 14:53
75-01-4
m&p-Xylene
ND
ug/m3
15.5
8.75
02/02/22 14:53
179601-23-1
o-Xylene
ND
ug/m3
7.7
8.75
02/02/22 14:53
95-47-6
Date: 02/08/2022 06:42 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 25 of 42

lV11.1 Analytical
www.pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
QC Batch: 796062 Analysis Method: TO-15
QC Batch Method: TO-15 Analysis Description: T015 MSV AIR Low Level
Laboratory: Pace Analytical Services - Minneapolis
Associated Lab Samples: 92583866001, 92583866002, 92583866003, 92583866005, 92583866006
METHOD BLANK: 4232406 Matrix: Air
Associated Lab Samples: 92583866001, 92583866002, 92583866003, 92583866005, 92583866006
Blank Reporting
Parameter Units Result Limit Analyzed
1,1,1-Trichloroethane
ug/m3
ND
0.56
01/28/22 10:46
1,1,2,2-Tetrachloroethane
ug/m3
ND
0.70
01/28/22 10:46
1,1,2-Trichloroethane
ug/m3
ND
0.28
01/28/22 10:46
1,1,2-Trichlorotrifluoroethane
ug/m3
ND
0.78
01/28/22 10:46
1,1-Dichloroethane
ug/m3
ND
0.41
01/28/22 10:46
1,1-Dichloroethene
ug/m3
ND
0.40
01/28/22 10:46
1,2,4-Trichlorobenzene
ug/m3
ND
3.8
01/28/22 10:46
1,2,4-Trimethylbenzene
ug/m3
ND
0.50
01/28/22 10:46
1,2-Dibromoethane (EDB)
ug/m3
ND
0.39
01/28/22 10:46
1,2-Dichlorobenzene
ug/m3
ND
1.5
01/28/22 10:46
1,2-Dichloroethane
ug/m3
ND
0.41
01/28/22 10:46
1,2-Dichloropropane
ug/m3
ND
0.47
01/28/22 10:46
1,3,5-Trimethylbenzene
ug/m3
ND
0.50
01/28/22 10:46
1,3-Butadiene
ug/m3
ND
0.22
01/28/22 10:46
1,3-Dichlorobenzene
ug/m3
ND
1.5
01/28/22 10:46
1,4-Dichlorobenzene
ug/m3
ND
1.5
01/28/22 10:46
2-Butanone (MEK)
ug/m3
ND
1.5
01/28/22 10:46
2-Hexanone
ug/m3
ND
2.1
01/28/22 10:46
2-Propanol
ug/m3
ND
1.2
01/28/22 10:46
4-Ethyltoluene
ug/m3
ND
1.2
01/28/22 10:46
4-Methyl-2-pentanone (MIBK)
ug/m3
ND
2.1
01/28/22 10:46
Acetone
ug/m3
ND
3.0
01/28/22 10:46
Benzene
ug/m3
ND
0.16
01/28/22 10:46
Benzyl chloride
ug/m3
ND
1.3
01/28/22 10:46
Bromodichloromethane
ug/m3
ND
0.68
01/28/22 10:46
Bromoform
ug/m3
ND
2.6
01/28/22 10:46
Bromomethane
ug/m3
ND
0.39
01/28/22 10:46
Carbon disulfide
ug/m3
ND
0.32
01/28/22 10:46
Carbon tetrachloride
ug/m3
ND
0.64
01/28/22 10:46
Chlorobenzene
ug/m3
ND
0.47
01/28/22 10:46
Chloroethane
ug/m3
ND
0.27
01/28/22 10:46
Chloroform
ug/m3
ND
0.25
01/28/22 10:46
Chloromethane
ug/m3
ND
0.21
01/28/22 10:46
cis-1,2-Dichloroethene
ug/m3
ND
0.40
01/28/22 10:46
cis-1,3-Dichloropropene
ug/m3
ND
1.2
01/28/22 10:46
Cyclohexane
ug/m3
ND
0.88
01/28/22 10:46
Dibromochloromethane
ug/m3
ND
0.86
01/28/22 10:46
Dichlorodifluoromethane
ug/m3
ND
0.50
01/28/22 10:46
Dichlorotetrafluoroethane
ug/m3
ND
0.71
01/28/22 10:46
Ethanol
ug/m3
ND
0.96
01/28/22 10:46
Qualifiers
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 02/08/2022 06:42 PM without the written consent of Pace Analytical Services, LLC. Page 26 of 42

lV11.1 Analytical
www.pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
METHOD BLANK: 4232406 Matrix: Air
Associated Lab Samples: 92583866001, 92583866002, 92583866003, 92583866005, 92583866006
Blank Reporting
Parameter Units Result Limit Analyzed
Ethyl acetate
ug/m3
ND
0.37
01/28/22 10:46
Ethylbenzene
ug/m3
ND
0.44
01/28/22 10:46
Hexachloro-1,3-butadiene
ug/m3
ND
2.7
01/28/22 10:46
m&p-Xylene
ug/m3
ND
0.88
01/28/22 10:46
Methyl-tert-butyl ether
ug/m3
ND
1.8
01/28/22 10:46
Methylene Chloride
ug/m3
ND
1.8
01/28/22 10:46
n-Heptane
ug/m3
ND
0.42
01/28/22 10:46
n-Hexane
ug/m3
ND
0.36
01/28/22 10:46
Naphthalene
ug/m3
ND
1.3
01/28/22 10:46
o-Xylene
ug/m3
ND
0.44
01/28/22 10:46
Propylene
ug/m3
ND
0.44
01/28/22 10:46
Styrene
ug/m3
ND
0.43
01/28/22 10:46
Tetrachloroethene
ug/m3
ND
0.34
01/28/22 10:46
Tetrahydrofuran
ug/m3
ND
0.30
01/28/22 10:46
Toluene
ug/m3
ND
0.38
01/28/22 10:46
trans-1,2-Dichloroethene
ug/m3
ND
0.40
01/28/22 10:46
trans- 1,3-Dichloropropene
ug/m3
ND
1.2
01/28/22 10:46
Trichloroethene
ug/m3
ND
0.27
01/28/22 10:46
Trichlorofluoromethane
ug/m3
ND
0.57
01/28/22 10:46
Vinyl acetate
ug/m3
ND
0.36
01/28/22 10:46
Vinyl chloride
ug/m3
ND
0.13
01/28/22 10:46
Qualifiers
LABORATORY CONTROL SAMPLE:
Parameter
4232407
Units
Spike
Conc.
LCS
Result
LCS
% Rec
% Rec
Limits
1,1,1-Trichloroethane
ug/m3
59.3
50.7
85
70-130
1,1,2,2-Tetrachloroethane
ug/m3
75.4
72.1
96
70-132
1,1,2-Trichloroethane
ug/m3
59.6
58.7
98
70-131
1,1,2-Trichlorotrifluoroethane
ug/m3
83.6
68.5
82
70-130
1,1-Dichloroethane
ug/m3
43.9
36.2
82
70-130
1,1-Dichloroethene
ug/m3
43.5
37.4
86
70-130
1,2,4-Trichlorobenzene
ug/m3
177
175
99
70-130
1,2,4-Trimethylbenzene
ug/m3
54
56.6
105
70-137
1,2-Dibromoethane (EDB)
ug/m3
82.5
82.3
100
70-137
1,2-Dichlorobenzene
ug/m3
66.2
63.3
96
70-131
1,2-Dichloroethane
ug/m3
44.4
38.5
87
70-134
1,2-Dichloropropane
ug/m3
50.6
45.9
91
70-130
1,3,5-Trimethylbenzene
ug/m3
53.7
55.9
104
70-131
1,3-Butadiene
ug/m3
24.2
21.4
89
70-139
1,3-Dichlorobenzene
ug/m3
66.3
63.5
96
70-134
1,4-Dichlorobenzene
ug/m3
66.3
62.3
94
70-131
2-Butanone (MEK)
ug/m3
32.3
30.0
93
70-133
2-Hexanone
ug/m3
44.8
49.6
111
70-136
2-Propanol
ug/m3
149
123
83
65-133
Qualifiers
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 02/08/2022 06:42 PM without the written consent of Pace Analytical Services, LLC. Page 27 of 42

lV11.1 Analytical
www.pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
LABORATORY CONTROL SAMPLE:
Parameter
4232407
Units
Spike
Conc.
LCS
Result
LCS
% Rec
% Rec
Limits
4-Ethyltoluene
ug/m3
53.7
56.5
105
70-130
4-Methyl-2-pentanone (MIBK)
ug/m3
44.9
43.7
97
70-130
Acetone
ug/m3
128
106
83
60-134
Benzene
ug/m3
34.8
29.1
84
70-130
Benzyl chloride
ug/m3
57.6
50.0
87
70-130
Bromodichloromethane
ug/m3
73.1
66.9
91
70-130
Bromoform
ug/m3
114
120
106
70-138
Bromomethane
ug/m3
42.5
36.8
87
68-131
Carbon disulfide
ug/m3
34.4
29.9
87
70-130
Carbon tetrachloride
ug/m3
69.4
63.0
91
70-132
Chlorobenzene
ug/m3
50.2
45.6
91
70-130
Chloroethane
ug/m3
28.8
27.4
95
70-134
Chloroform
ug/m3
52.4
43.8
84
70-130
Chloromethane
ug/m3
22.6
19.9
88
68-131
cis-1,2-Dichloroethene
ug/m3
43.4
40.7
94
70-136
cis-1,3-Dichloropropene
ug/m3
49.4
47.7
97
70-130
Cyclohexane
ug/m3
37.4
33.9
91
70-131
Dibromochloromethane
ug/m3
93.2
98.0
105
70-134
Dichlorodifluoromethane
ug/m3
54.6
44.7
82
70-130
Dichlorotetrafluoroethane
ug/m3
71.2
60.7
85
70-130
Ethanol
ug/m3
124
117
94
55-145
Ethyl acetate
ug/m3
38.9
36.6
94
70-135
Ethylbenzene
ug/m3
47.8
44.5
93
70-133
Hexachloro-1,3-butadiene
ug/m3
133
146
110
70-132
m&p-Xylene
ug/m3
95.4
89.3
94
70-134
Methyl-tert-butyl ether
ug/m3
39.6
34.3
87
70-131
Methylene Chloride
ug/m3
190
164
86
65-132
n-Heptane
ug/m3
44.6
38.2
86
70-130
n-Hexane
ug/m3
38
32.8
86
70-132
Naphthalene
ug/m3
65.2
53.4
82
70-130
o-Xylene
ug/m3
47.6
45.3
95
70-134
Propylene
ug/m3
18.9
16.6
88
69-133
Styrene
ug/m3
47
46.9
100
70-135
Tetrachloroethene
ug/m3
73.4
77.7
106
70-134
Tetrahydrofuran
ug/m3
32.1
30.3
94
70-140
Toluene
ug/m3
41.6
36.7
88
70-136
trans-1,2-Dichloroethene
ug/m3
43.6
40.9
94
70-134
trans- 1,3-Dichloropropene
ug/m3
50.5
51.7
102
70-131
Trichloroethene
ug/m3
58.4
51.2
88
70-134
Trichlorofluoromethane
ug/m3
62
49.3
80
63-130
Vinyl acetate
ug/m3
46.4
44.2
95
70-139
Vinyl chloride
ug/m3
28
24.6
88
70-132
Qualifiers
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 02/08/2022 06:42 PM without the written consent of Pace Analytical Services, LLC. Page 28 of 42

lV11.1 Analytical
www.pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
SAMPLE DUPLICATE: 4232774
Parameter
Units
10595260001
Result
Dup
Result
1,1,1-Trichloroethane
ug/m3
<0.29
ND
1,1,2,2-Tetrachloroethane
ug/m3
<0.58
ND
1,1,2-Trichloroethane
ug/m3
<0.31
ND
1,1,2-Trichlorotrifluoroethane
ug/m3
<0.45
ND
1,1-Dichloroethane
ug/m3
<0.26
ND
1,1-Dichloroethene
ug/m3
<0.21
ND
1,2,4-Trichlorobenzene
ug/m3
<7.6
ND
1,2,4-Trimethylbenzene
ug/m3
0.891
.77J
1,2-Dibromoethane (EDB)
ug/m3
<0.46
ND
1,2-Dichlorobenzene
ug/m3
<0.63
ND
1,2-Dichloroethane
ug/m3
<0.30
ND
1,2-Dichloropropane
ug/m3
<0.42
ND
1,3,5-Trimethylbenzene
ug/m3
<0.45
ND
1,3-Butadiene
ug/m3
<0.19
ND
1,3-Dichlorobenzene
ug/m3
<0.79
ND
1,4-Dichlorobenzene
ug/m3
<1.4
ND
2-Butanone (MEK)
ug/m3
4.8
4.8
2-Hexanone
ug/m3
<0.69
ND
2-Propanol
ug/m3
51.5
52.8
4-Ethyltoluene
ug/m3
0.77J
ND
4-Methyl-2-pentanone (MIBK)
ug/m3
<0.50
ND
Acetone
ug/m3
19.4
20.2
Benzene
ug/m3
1.5
1.6
Benzyl chloride
ug/m3
<1.4
ND
Bromodichloromethane
ug/m3
<0.37
ND
Bromoform
ug/m3
<2.5
ND
Bromomethane
ug/m3
<0.23
ND
Carbon disulfide
ug/m3
<0.20
ND
Carbon tetrachloride
ug/m3
<0.43
ND
Chlorobenzene
ug/m3
<0.24
ND
Chloroethane
ug/m3
<0.35
ND
Chloroform
ug/m3
<0.28
ND
Chloromethane
ug/m3
0.88
0.89
cis-1,2-Dichloroethene
ug/m3
4.4
4.3
cis-1,3-Dichloropropene
ug/m3
<0.40
ND
Cyclohexane
ug/m3
2.1 J
1.91
Dibromochloromethane
ug/m3
<0.80
ND
Dichlorodifluoromethane
ug/m3
2.8
2.8
Dichlorotetrafluoroethane
ug/m3
<0.31
ND
Ethanol
ug/m3
82.7
84.2
Ethyl acetate
ug/m3
0.48J
.511
Ethylbenzene
ug/m3
0.891
.83J
Hexachloro-1,3-butadiene
ug/m3
<1.9
ND
m&p-Xylene
ug/m3
2.9
3.0
Methyl-tert-butyl ether
ug/m3
<0.20
ND
Methylene Chloride
ug/m3
<0.92
ND
n-Heptane
ug/m3
1.2J
1.2J
RPD Qualifiers
2
4
1
3
2
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 02/08/2022 06:42 PM without the written consent of Pace Analytical Services, LLC. Page 29 of 42

lV11.1 Analytical
www.pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
SAMPLE DUPLICATE: 4232774
Parameter
Units
10595260001
Result
Dup
Result RPD
n-Hexane
ug/m3
3.0
2.8 5
Naphthalene
ug/m3
<3.4
ND
o-Xylene
ug/m3
1.0J
.92J
Propylene
ug/m3
<0.20
ND
Styrene
ug/m3
<0.60
ND
Tetrachloroethene
ug/m3
<0.45
ND
Tetrahydrofuran
ug/m3
3.6
3.6 0
Toluene
ug/m3
4.5
4.4 2
trans-1,2-Dichloroethene
ug/m3
<0.26
ND
trans- 1,3-Dichloropropene
ug/m3
<0.84
ND
Trichloroethene
ug/m3
<0.30
ND
Trichlorofluoromethane
ug/m3
4.7
4.7 0
Vinyl acetate
ug/m3
<0.32
ND
Vinyl chloride
ug/m3
<0.13
ND
SAMPLE DUPLICATE: 4232775
Parameter
Units
10595261001
Result
Dup
Result
RPD
1,1,1-Trichloroethane
ug/m3
<0.20
ND
1,1,2,2-Tetrachloroethane
ug/m3
<0.39
ND
1,1,2-Trichloroethane
ug/m3
<0.21
ND
1,1,2-Trichlorotrifluoroethane
ug/m3
0.70J
.62J
1,1-Dichloroethane
ug/m3
<0.17
ND
1,1-Dichloroethene
ug/m3
<0.15
ND
1,2,4-Trichlorobenzene
ug/m3
<5.2
ND
1,2,4-Trimethylbenzene
ug/m3
2.4
2.3
6
1,2-Dibromoethane (EDB)
ug/m3
<0.32
ND
1,2-Dichlorobenzene
ug/m3
<0.43
ND
1,2-Dichloroethane
ug/m3
<0.21
ND
1,2-Dichloropropane
ug/m3
<0.29
ND
1,3,5-Trimethylbenzene
ug/m3
0.70J
.67J
1,3-Butadiene
ug/m3
<0.13
ND
1,3-Dichlorobenzene
ug/m3
<0.54
ND
1,4-Dichlorobenzene
ug/m3
<0.93
ND
2-Butanone (MEK)
ug/m3
1.5J
1.4J
2-Hexanone
ug/m3
<0.47
ND
2-Propanol
ug/m3
5.3
5.2
2
4-Ethyltoluene
ug/m3
0.83J
.84J
4-Methyl-2-pentanone (MIBK)
ug/m3
<0.34
ND
Acetone
ug/m3
18.9
18.3
3
Benzene
ug/m3
5.3
5.2
2
Benzyl chloride
ug/m3
<0.94
ND
Bromodichloromethane
ug/m3
<0.25
ND
Bromoform
ug/m3
<1.7
ND
Bromomethane
ug/m3
<0.16
ND
Qualifiers
Qualifiers
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 02/08/2022 06:42 PM without the written consent of Pace Analytical Services, LLC.
Page 30 of 42

lV11.1 Analytical
www.pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
SAMPLE DUPLICATE: 4232775
Parameter
Units
10595261001
Result
Carbon disulfide
ug/m3
<0.14
Carbon tetrachloride
ug/m3
0.31J
Chlorobenzene
ug/m3
<0.16
Chloroethane
ug/m3
<0.24
Chloroform
ug/m3
0.22J
Chloromethane
ug/m3
0.95
cis-1,2-Dichloroethene
ug/m3
3.3
cis-1,3-Dichloropropene
ug/m3
<0.27
Cyclohexane
ug/m3
7.5
Dibromochloromethane
ug/m3
<0.55
Dichlorodifluoromethane
ug/m3
3.0
Dichlorotetrafluoroethane
ug/m3
<0.21
Ethanol
ug/m3
83.3
Ethyl acetate
ug/m3
0.501
Ethylbenzene
ug/m3
2.6
Hexachloro-1,3-butadiene
ug/m3
<1.3
m&p-Xylene
ug/m3
9.6
Methyl-tert-butyl ether
ug/m3
<0.13
Methylene Chloride
ug/m3
<0.63
n-Heptane
ug/m3
4.1
n-Hexane
ug/m3
8.9
Naphthalene
ug/m3
<2.3
o-Xylene
ug/m3
3.2
Propylene
ug/m3
<0.14
Styrene
ug/m3
<0.41
Tetrachloroethene
ug/m3
0.38J
Tetrahydrofuran
ug/m3
<0.19
Toluene
ug/m3
14.4
trans-1,2-Dichloroethene
ug/m3
<0.18
trans- 1,3-Dichloropropene
ug/m3
<0.58
Trichloroethene
ug/m3
<0.21
Trichlorofluoromethane
ug/m3
3.1
Vinyl acetate
ug/m3
<0.22
Vinyl chloride
ug/m3
<0.092
Dup
Result
RPD Qualifiers
ND
.36J
ND
ND
.2J
0.95
0
2.9
14
ND
7.4
1
ND
2.8
6
ND
81.7
2
.48J
2.6
1
ND
9.5
1
ND
ND
3.9
5
8.8
1
ND
3.2
1
ND
ND
.33J
ND
14.0
3
ND
ND
ND
3.0
4
ND
ND
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 02/08/2022 06:42 PM without the written consent of Pace Analytical Services, LLC.
Page 31 of 42

laneAnalytical
www,pacelabs.com
Pace Analytical Services, LLC
9800 KinceyAve. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
QC Batch: 796371 Analysis Method: TO-15
QC Batch Method: TO-15 Analysis Description: T015 MSVAIR Low Level
Laboratory: Pace Analytical Services - Minneapolis
Associated Lab Samples: 92583866004, 92583866007, 92583866008, 92583866009, 92583866010, 92583866011
METHOD BLANK: 4233834 Matrix: Air
Associated Lab Samples: 92583866004, 92583866007, 92583866008, 92583866009, 92583866010, 92583866011
Blank Reporting
Parameter Units Result Limit Analyzed Qualifiers
1,1,1-Trichloroethane
ug/m3
ND
1.1
02/02/22 09:36
1,1,2,2-Tetrachloroethane
ug/m3
ND
1.4
02/02/22 09:36
1,1,2-Trichloroethane
ug/m3
ND
0.56
02/02/22 09:36
1,1,2-Trichlorotrifluoroethane
ug/m3
ND
1.6
02/02/22 09:36
1,1-Dichloroethane
ug/m3
ND
0.82
02/02/22 09:36
1,1-Dichloroethene
ug/m3
ND
0.81
02/02/22 09:36
1,2,4-Trichlorobenzene
ug/m3
ND
15.1
02/02/22 09:36
1,2,4-Trimethylbenzene
ug/m3
ND
1.0
02/02/22 09:36
1,2-Dibromoethane (EDB)
ug/m3
ND
0.78
02/02/22 09:36
1,2-Dichlorobenzene
ug/m3
ND
3.1
02/02/22 09:36
1,2-Dichloroethane
ug/m3
ND
0.82
02/02/22 09:36
1,2-Dichloropropane
ug/m3
ND
0.94
02/02/22 09:36
1,3,5-Trimethyl benzene
ug/m3
ND
1.0
02/02/22 09:36
1,3-Butadiene
ug/m3
ND
0.45
02/02/22 09:36
1,3-Dichlorobenzene
ug/m3
ND
3.1
02/02/22 09:36
1,4-Dichlorobenzene
ug/m3
ND
3.1
02/02/22 09:36
2-Butanone (MEK)
ug/m3
ND
3.0
02/02/22 09:36
2-Hexanone
ug/m3
ND
4.2
02/02/22 09:36
2-Propanol
ug/m3
ND
2.5
02/02/22 09:36
4-Ethyltoluene
ug/m3
ND
2.5
02/02/22 09:36
4-Methyl-2-pentanone (MIBK)
ug/m3
ND
4.2
02/02/22 09:36
Acetone
ug/m3
ND
6.0
02/02/22 09:36
Benzene
ug/m3
ND
0.32
02/02/22 09:36
Benzyl chloride
ug/m3
ND
5.3
02/02/22 09:36
Bromodichloromethane
ug/m3
ND
1.4
02/02/22 09:36
Bromoform
ug/m3
ND
5.2
02/02/22 09:36
Bromomethane
ug/m3
ND
0.79
02/02/22 09:36
Carbon disulfide
ug/m3
ND
0.63
02/02/22 09:36
Carbon tetrachloride
ug/m3
ND
1.3
02/02/22 09:36
Chlorobenzene
ug/m3
ND
0.94
02/02/22 09:36
Chloroethane
ug/m3
ND
1.3
02/02/22 09:36
Chloroform
ug/m3
ND
0.50
02/02/22 09:36
Chloromethane
ug/m3
ND
0.42
02/02/22 09:36
cis- 1,2-Dichloroethene
ug/m3
ND
0.81
02/02/22 09:36
cis- 1,3-Dichloropropene
ug/m3
ND
2.3
02/02/22 09:36
Cyclohexane
ug/m3
ND
1.8
02/02/22 09:36
Dibromochloromethane
ug/m3
ND
1.7
02/02/22 09:36
Dichlorodifluoromethane
ug/m3
ND
1.0
02/02/22 09:36
Dichlorotetrafluoroethane
ug/m3
ND
1.4
02/02/22 09:36
Ethanol
ug/m3
ND
1.9
02/02/22 09:36
MN
M,
MN
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 02/08/2022 06:42 PM without the written consent of Pace Analytical Services, LLC. Page 32 of 42

lV11.1 Analytical
www.pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
METHOD BLANK: 4233834 Matrix: Air
Associated Lab Samples: 92583866004, 92583866007, 92583866008, 92583866009, 92583866010, 92583866011
Blank Reporting
Parameter Units Result Limit Analyzed Qualifiers
Ethyl acetate
ug/m3
ND
0.73
02/02/22 09:36
Ethylbenzene
ug/m3
ND
0.88
02/02/22 09:36
Hexachloro-1,3-butadiene
ug/m3
ND
5.4
02/02/22 09:36
m&p-Xylene
ug/m3
ND
1.8
02/02/22 09:36
Methyl-tert-butyl ether
ug/m3
ND
3.7
02/02/22 09:36
Methylene Chloride
ug/m3
ND
3.5
02/02/22 09:36
n-Heptane
ug/m3
ND
0.83
02/02/22 09:36
n-Hexane
ug/m3
ND
0.72
02/02/22 09:36
Naphthalene
ug/m3
ND
5.3
02/02/22 09:36 MN
o-Xylene
ug/m3
ND
0.88
02/02/22 09:36
Propylene
ug/m3
ND
0.88
02/02/22 09:36
Styrene
ug/m3
ND
2.2
02/02/22 09:36 MN
Tetrachloroethene
ug/m3
ND
0.69
02/02/22 09:36
Tetrahydrofuran
ug/m3
ND
0.60
02/02/22 09:36
Toluene
ug/m3
ND
0.77
02/02/22 09:36
trans-1,2-Dichloroethene
ug/m3
ND
0.81
02/02/22 09:36
trans- 1,3-Dichloropropene
ug/m3
ND
2.3
02/02/22 09:36
Trichloroethene
ug/m3
ND
0.55
02/02/22 09:36
Trichlorofluoromethane
ug/m3
ND
1.1
02/02/22 09:36
Vinyl acetate
ug/m3
ND
0.72
02/02/22 09:36
Vinyl chloride
ug/m3
ND
0.26
02/02/22 09:36
LABORATORY CONTROL SAMPLE:
Parameter
4233835
Units
Spike
Conc.
LCS
Result
LCS
% Rec
% Rec
Limits Qualifiers
1,1,1-Trichloroethane
ug/m3
59.3
58.6
99
70-130
1,1,2,2-Tetrachloroethane
ug/m3
75.4
85.4
113
70-132
1,1,2-Trichloroethane
ug/m3
59.6
69.9
117
70-131
1,1,2-Trichlorotrifluoroethane
ug/m3
83.6
88.1
105
70-130
1,1-Dichloroethane
ug/m3
43.9
44.8
102
70-130
1,1-Dichloroethene
ug/m3
43.5
44.7
103
70-130
1,2,4-Trichlorobenzene
ug/m3
177
160
90
70-130
1,2,4-Trimethylbenzene
ug/m3
54
67.4
125
70-137
1,2-Dibromoethane (EDB)
ug/m3
82.5
97.7
118
70-137
1,2-Dichlorobenzene
ug/m3
66.2
67.2
102
70-131
1,2-Dichloroethane
ug/m3
44.4
47.7
107
70-134
1,2-Dichloropropane
ug/m3
50.6
52.9
105
70-130
1,3,5-Trimethylbenzene
ug/m3
53.7
60.4
112
70-131
1,3-Butadiene
ug/m3
24.2
27.5
114
70-139
1,3-Dichlorobenzene
ug/m3
66.3
67.1
101
70-134
1,4-Dichlorobenzene
ug/m3
66.3
66.1
100
70-131
2-Butanone (MEK)
ug/m3
32.3
33.4
103
70-133
2-Hexanone
ug/m3
44.8
45.0
100
70-136
2-Propanol
ug/m3
149
143
96
65-133
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 02/08/2022 06:42 PM without the written consent of Pace Analytical Services, LLC. Page 33 of 42

lV11.1 Analytical
www.pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
LABORATORY CONTROL SAMPLE:
Parameter
4233835
Units
Spike
Conc.
LCS
Result
LCS
% Rec
% Rec
Limits
4-Ethyltoluene
ug/m3
53.7
55.9
104
70-130
4-Methyl-2-pentanone (MIBK)
ug/m3
44.9
53.6
119
70-130
Acetone
ug/m3
128
128
100
60-134
Benzene
ug/m3
34.8
34.1
98
70-130
Benzyl chloride
ug/m3
57.6
54.3
94
70-130
Bromodichloromethane
ug/m3
73.1
78.6
108
70-130
Bromoform
ug/m3
114
142
125
70-138
Bromomethane
ug/m3
42.5
45.4
107
68-131
Carbon disulfide
ug/m3
34.4
36.4
106
70-130
Carbon tetrachloride
ug/m3
69.4
73.9
107
70-132
Chlorobenzene
ug/m3
50.2
55.1
110
70-130
Chloroethane
ug/m3
28.8
31.7
110
70-134
Chloroform
ug/m3
52.4
51.5
98
70-130
Chloromethane
ug/m3
22.6
23.4
104
68-131
cis-1,2-Dichloroethene
ug/m3
43.4
48.1
111
70-136
cis-1,3-Dichloropropene
ug/m3
49.4
50.9
103
70-130
Cyclohexane
ug/m3
37.4
36.7
98
70-131
Dibromochloromethane
ug/m3
93.2
102
109
70-134
Dichlorodifluoromethane
ug/m3
54.6
53.9
99
70-130
Dichlorotetrafluoroethane
ug/m3
71.2
70.5
99
70-130
Ethanol
ug/m3
124
124
100
55-145
Ethyl acetate
ug/m3
38.9
40.8
105
70-135
Ethylbenzene
ug/m3
47.8
51.1
107
70-133
Hexachloro-1,3-butadiene
ug/m3
133
131
98
70-132
m&p-Xylene
ug/m3
95.4
102
107
70-134
Methyl-tert-butyl ether
ug/m3
39.6
38.1
96
70-131
Methylene Chloride
ug/m3
190
190
100
65-132
n-Heptane
ug/m3
44.6
43.4
97
70-130
n-Hexane
ug/m3
38
41.9
110
70-132
Naphthalene
ug/m3
65.2
62.8
96
70-130
o-Xylene
ug/m3
47.6
52.2
110
70-134
Propylene
ug/m3
18.9
19.9
105
69-133
Styrene
ug/m3
47
48.0
102
70-135
Tetrachloroethene
ug/m3
73.4
72.1
98
70-134
Tetrahydrofuran
ug/m3
32.1
33.6
105
70-140
Toluene
ug/m3
41.6
43.3
104
70-136
trans-1,2-Dichloroethene
ug/m3
43.6
54.9
126
70-134
trans- 1,3-Dichloropropene
ug/m3
50.5
50.6
100
70-131
Trichloroethene
ug/m3
58.4
65.0
111
70-134
Trichlorofluoromethane
ug/m3
62
63.6
103
63-130
Vinyl acetate
ug/m3
46.4
46.6
101
70-139
Vinyl chloride
ug/m3
28
31.0
111
70-132
Qualifiers
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 02/08/2022 06:42 PM without the written consent of Pace Analytical Services, LLC. Page 34 of 42

lV11.1 Analytical
www.pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
SAMPLE DUPLICATE: 4235833
Parameter
Units
10595055002
Result
Dup
Result
1,1,1-Trichloroethane
ug/m3
<0.56
ND
1,1,2,2-Tetrachloroethane
ug/m3
<1.1
ND
1,1,2-Trichloroethane
ug/m3
<0.59
ND
1,1,2-Trichlorotrifluoroethane
ug/m3
<0.86
ND
1,1-Dichloroethane
ug/m3
<0.49
ND
1,1-Dichloroethene
ug/m3
<0.41
ND
1,2,4-Trichlorobenzene
ug/m3
<14.6
ND
1,2,4-Trimethylbenzene
ug/m3
<1.1
ND
1,2-Dibromoethane (EDB)
ug/m3
<0.90
ND
1,2-Dichlorobenzene
ug/m3
<1.2
ND
1,2-Dichloroethane
ug/m3
<0.58
ND
1,2-Dichloropropane
ug/m3
<0.80
ND
1,3,5-Trimethylbenzene
ug/m3
<0.87
ND
1,3-Butadiene
ug/m3
<0.36
ND
1,3-Dichlorobenzene
ug/m3
<1.5
ND
1,4-Dichlorobenzene
ug/m3
<2.6
ND
2-Butanone (MEK)
ug/m3
3.5J
3AJ
2-Hexanone
ug/m3
<1.3
ND
2-Propanol
ug/m3
6.2J
6.4J
4-Ethyltoluene
ug/m3
<1.4
ND
4-Methyl-2-pentanone (MIBK)
ug/m3
<0.96
ND
Acetone
ug/m3
28.8
29.2
Benzene
ug/m3
<0.34
ND
Benzyl chloride
ug/m3
<2.7
ND
Bromodichloromethane
ug/m3
<0.71
ND
Bromoform
ug/m3
<4.8
ND
Bromomethane
ug/m3
<0.45
ND
Carbon disulfide
ug/m3
<0.39
ND
Carbon tetrachloride
ug/m3
<0.84
ND
Chlorobenzene
ug/m3
<0.46
ND
Chloroethane
ug/m3
<0.67
ND
Chloroform
ug/m3
<0.55
ND
Chloromethane
ug/m3
<0.25
ND
cis-1,2-Dichloroethene
ug/m3
<0.58
ND
cis-1,3-Dichloropropene
ug/m3
<0.76
ND
Cyclohexane
ug/m3
<0.66
ND
Dibromochloromethane
ug/m3
<1.5
ND
Dichlorodifluoromethane
ug/m3
<0.56
ND
Dichlorotetrafluoroethane
ug/m3
<0.60
ND
Ethanol
ug/m3
77.8
80.2
Ethyl acetate
ug/m3
<0.39
ND
Ethylbenzene
ug/m3
<0.92
ND
Hexachloro-1,3-butadiene
ug/m3
<3.7
ND
m&p-Xylene
ug/m3
4AJ
4.5J
Methyl-tert-butyl ether
ug/m3
<0.38
ND
Methylene Chloride
ug/m3
<1.8
ND
n-Heptane
ug/m3
<0.54
ND
RPD Qualifiers
3
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 02/08/2022 06:42 PM without the written consent of Pace Analytical Services, LLC. Page 35 of 42

lV11.1 Analytical
www.pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
SAMPLE DUPLICATE: 4235833
Parameter
n-Hexane
Naphthalene
o-Xylene
Propylene
Styrene
Tetrachloroethene
Tetrahydrofuran
Toluene
trans-1,2-Dichloroethene
trans- 1,3-Dichloropropene
Trichloroethene
Trichlorofluoromethane
Vinyl acetate
Vinyl chloride
SAMPLE DUPLICATE: 4235834
Parameter
1,1,1-Trichloroethane
1,1,2,2-Tetrachloroethane
1,1,2-Trichloroethane
1,1,2-Trichlorotrifluoroethane
1,1-Dichloroethane
1,1-Dichloroethene
1,2,4-Trichlorobenzene
1,2,4-Trimethylbenzene
1,2-Dibromoethane (EDB)
1,2-Dichlorobenzene
1,2-Dichloroethane
1,2-Dichloropropane
1,3,5-Trimethylbenzene
1,3-Butadiene
1,3-Dichlorobenzene
1,4-Dichlorobenzene
2-Butanone (MEK)
2-Hexanone
2-Propanol
4-Ethyltoluene
4-Methyl-2-pentanone (MIBK)
Acetone
Benzene
Benzyl chloride
Bromodichloromethane
Bromoform
Bromomethane
Units
ug/m3
ug/m3
ug/m3
ug/m3
ug/m3
ug/m3
ug/m3
ug/m3
ug/m3
ug/m3
ug/m3
ug/m3
ug/m3
ug/m3
10595055002
Result
<0.57
<6.5
1.2J
<0.39
<1.2
<0.87
<0.54
1.7J
<0.50
<1.6
<0.59
2.5J
<0.62
<0.26
Dup
Result RPD Qualifiers
Units
10595055004 Dup
Result Result
ug/m3
3.8
ug/m3
<0.77
ug/m3
<0.41
ug/m3
<0.60
ug/m3
<0.34
ug/m3
<0.28
ug/m3
<10.1
ug/m3
3.7
ug/m3
<0.62
ug/m3
<0.83
ug/m3
<0.40
ug/m3
<0.55
ug/m3
<0.60
ug/m3
<0.25
ug/m3
<1.0
ug/m3
<1.8
ug/m3
17.5
ug/m3
<0.91
ug/m3
82.3
ug/m3
<0.97
ug/m3
0.86J
ug/m3
81.4
ug/m3
0.56J
ug/m3
<1.8
ug/m3
<0.49
ug/m3
<3.3
ug/m3
<0.31
ND
ND
1.2J
ND
ND
ND
ND
1.8J
ND
ND
ND
2.5J
ND
ND
4.0
ND
ND
ND
ND
ND
ND
3.7
ND
ND
ND
ND
ND
ND
ND
ND
18.0
ND
88.2
ND
.97J
87.2
.63J
ND
ND
ND
ND
RPD
5
U
3
7
7
Qualifiers
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 02/08/2022 06:42 PM without the written consent of Pace Analytical Services, LLC.
Page 36 of 42

lV11.1 Analytical
www.pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
SAMPLE DUPLICATE: 4235834
Parameter
Units
10595055004
Result
Carbon disulfide
ug/m3
1.1J
Carbon tetrachloride
ug/m3
<0.58
Chlorobenzene
ug/m3
<0.32
Chloroethane
ug/m3
<0.46
Chloroform
ug/m3
<0.38
Chloromethane
ug/m3
<0.18
cis-1,2-Dichloroethene
ug/m3
7.5
cis-1,3-Dichloropropene
ug/m3
<0.53
Cyclohexane
ug/m3
<0.46
Dibromochloromethane
ug/m3
<1.1
Dichlorodifluoromethane
ug/m3
3.4
Dichlorotetrafluoroethane
ug/m3
<0.42
Ethanol
ug/m3
193
Ethyl acetate
ug/m3
1.6
Ethylbenzene
ug/m3
1.2J
Hexachloro-1,3-butadiene
ug/m3
<2.5
m&p-Xylene
ug/m3
5.5
Methyl-tert-butyl ether
ug/m3
5.3J
Methylene Chloride
ug/m3
<1.2
n-Heptane
ug/m3
<0.37
n-Hexane
ug/m3
0.901
Naphthalene
ug/m3
11.0
o-Xylene
ug/m3
1.5J
Propylene
ug/m3
<0.27
Styrene
ug/m3
<0.79
Tetrachloroethene
ug/m3
164
Tetrahydrofuran
ug/m3
1.5
Toluene
ug/m3
2.3
trans-1,2-Dichloroethene
ug/m3
<0.35
trans- 1,3-Dichloropropene
ug/m3
<1.1
Trichloroethene
ug/m3
13.2
Trichlorofluoromethane
ug/m3
2.7
Vinyl acetate
ug/m3
<0.43
Vinyl chloride
ug/m3
<0.18
Dup
Result RPD
ND
ND
ND
ND
ND
ND
8.1
ND
ND
ND
1.8J
ND
207
1.8
1.2J
ND
5.5
5.8J
ND
ND
2.0
11.1
1.5J
ND
ND
170
1.3
2.6
ND
ND
14.3
3.1
ND
ND
0
7
10
u
0
8
11
Qualifiers
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 02/08/2022 06:42 PM without the written consent of Pace Analytical Services, LLC.
Page 37 of 42

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALIFIERS
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
DEFINITIONS
DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot.
ND - Not Detected at or above adjusted reporting limit.
TNTC - Too Numerous To Count
J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.
MDL -Adjusted Method Detection Limit.
PQL - Practical Quantitation Limit.
RL - Reporting Limit - The lowest concentration value that meets project requirements for quantitative data with known precision and
bias for a specific analyte in a specific matrix.
S - Surrogate
1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte is
a combined concentration.
Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values.
LCS(D) - Laboratory Control Sample (Duplicate)
MS(D) - Matrix Spike (Duplicate)
DUP - Sample Duplicate
RPD - Relative Percent Difference
NC - Not Calculable.
SG - Silica Gel - Clean -Up
U - Indicates the compound was analyzed for, but not detected.
Acid preservation may not be appropriate for 2 Chloroethylvinyl ether.
A separate vial preserved to a pH of 4-5 is recommended in SW846 Chapter 4 for the analysis of Acrolein and Acrylonitrile by EPA
Method 8260.
N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for
each analyte is a combined concentration.
Reported results are not rounded until the final step prior to reporting. Therefore, calculated parameters that are typically reported as
"Total" may vary slightly from the sum of the reported component parameters.
Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes.
TN -The NELAC Institute.
ANALYTE QUALIFIERS
MN The reporting limit has been raised in accordance with Minnesota Statutes 4740.2100 Subpart 8. C, D. Reporting Limit
Evaluation Rule.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 02/08/2022 06:42 PM without the written consent of Pace Analytical Services, LLC. Page 38 of 42

lceAnalyircal
www.pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA CROSS REFERENCE TABLE
Project: Lewis St. Brownfields 2022-021-Revised Report
Pace Project No.: 92583866
Lab ID
Sample ID
QC Batch Method
QC Batch
92583866001
SSV-14
TO-15
796062
92583866002
SSV-15
TO-15
796062
92583866003
SSV-16
TO-15
796062
92583866004
SSV-17
TO-15
796371
92583866005
SSV-18
TO-15
796062
92583866006
SSV-19
TO-15
796062
92583866007
SSV-20
TO-15
796371
92583866008
SSV-21
TO-15
796371
92583866009
SSV-22
TO-15
796371
92583866010
SSV-23
TO-15
796371
92583866011
SSV-23 Dup.
TO-15
796371
Date: 02/08/2022 06:42 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Analytical Method
Analytical
Batch
Page 39 of 42

Document Name:
Document Revised: November 15, 2021
Analytical n
Sample Condition Upon Receipt (SOUR)
Page 1 of 2
Document No.:
Issuing Authority:
F-CAR-CS-033-Rev,08
Pace Carolinas Quality Office
Laboratory receiving samples:
Asheville ❑ Eden❑ Greenwood F] Huntersville Raleighf-1 Mechariicsville❑ Atlanta] KernersvilleEl
Sample Condition
Upon Receipt
Client Name:
Project #
WO1t . 9Z'583866
Courier:
❑Fed Ex
❑UPS ❑U5P5 ❑Client
1111111111111111111111
❑ Commercial
Pace
[]Other:_
925831366
Custody Seal Present?
[]Yes Ea1Go
Seats intact? []Yes 51No
Date/Initla%Person Examining Contents;
Packing Material,
❑Bubble Wrap
[]Bubble Bags ®None ❑ Other
Biological Tissue Frozen?
❑Yes ❑No 4171N/A
Thermometer: ❑wet ❑Blue None
�IRGun ID: rlZ�(��jlf Type of Ice:
Correction Factor: ` �
Cooler Temp: n 1�t_ Add/Subtract (°C) V . (� Temp should be above freezing to VC.
[:]Samples out of temp criteria. Samples on ice, cooling process
Cooler-Temp-CorrectedfQ: �� j ` _ K-3S-begu
USDA Regulated Sall (❑ NIA, water sample)
Did samples originate in a quarantine zone within the United States; CA, NY, or 5C (check maps)? old samples originate from a foreign source (internationally,
IYes MNo inri—lino Nawali and Puprtn Rirn17 F-lVac mrd
Comments/Dls crep ancy:
Chain of Custody Present?
Yes
❑No
❑N/A
1.
Samples Arrived within Hold Time?
Yes
[]NO
❑N/A
2.
Short Hold Time Analysis (c72 hr.)?
yes
J@No
N/A
3.
Rush Turn Around Time Requested?
[]Yes
@No
[]N/A
4.
Sufficient Volume?
Yes
❑No
❑N/A
S.
Correct Containers Used?
-Pace Containers Used?
byes
Yes
❑No
❑No
❑N/A
❑N/A
G.
Containers Intact?
E4Yes
[]No
N/A
7.
Dissolved analysis: Samples Feld Filtered?
Yes
[]No
jANIA
8.
Sample Labels Match COC?
-Includes Date/Time/ID/Analysis Matriir
]Yes
[]No
❑N/A
s.
Headspace in V0A Vials (>5-6mm)?
[]Yes
QNO
N/A
10.
Trip Blank Present?
Trip Blank Custody Seals Present?
[]Yes
[]Yes
5(No
[:]No
❑N/A
/A
11.
COMMENTS/SAMPLE DISCREPANCY
Lot ID of split containers;
CLIENT NOTIFICATION/RESOLUTION
Person contacted, Date/Time; _
Project Manager SCURF Review:
Project Manager SRF Review:
Date:
Date:
Field Data Requlred? ❑Yes [-]NO
Page 40 of 42

Document Name:
Document Revised: November 15, 2021
�ceAnalXicaii
Sample Condition Upon Receipt (SCUR)
Page 2 of 2
Document Nb.:
Issuing Authority:
F-CAR•C5.033-Rev.08
Pace Carolinas Quality pffite
*Check mark top half of box If pH and/or dechlorination is
verified and within the acceptance range for preservation
samples.
Exceptions V0A, Coliform, TOC, Oil and Grease, DRO/8015 (water} ©OC, LLHg
**Bottom half of box is to list number of bottles
Project # + ,01t . 9dM
2663866
PM: LIVW Due Date; 02/04/22
CLIENT: 92-Pyramid
v
v
U
U
Z
4
u
D
u
a
a
a
m
Z
Z
Z
Z
ry
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Page 41 of 42

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