26019_Mid Town Used Cars_Assessment WP w approval_20230113

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
MICHAEL SCOTT
Director
Sent Via E-mail
Chris Orrell
ECS Southeast, LLP
1812 Center Park Drive, Suite D
Charlotte, NC 28217
[e-mail]
Subject: Work Plan Approval
Mid Town Used Cars
NORTH CAROLINA
Environmental Quality
January 16, 2023
1102, 1106 and 1018 South Tryon Street
Charlotte, Mecklenburg County
Brownfields Project No. 26019-22-060
Dear Mr. Orrell:
The North Carolina Department of Environmental Quality (DEQ) Brownfields Redevelopment
Section received the Brownfields Assessment Work Plan Rev 1 dated January 13, 2023 (Work
Plan). DEQ Brownfield comments to previous revisions dated December 20, 2022 of this Work
Plan have been addressed; therefore, the Work Plan is approved.
Please be advised that this approval from DEQ Brownfields does not waive any applicable
requirement to obtain any necessary permits, licenses or certifications which may be required
from other state or local entities. If you have any questions, please feel free to contact me at
704/661-0330, or via e-mail at Carolyn.minnich(a)ncdenngov
Sincerely,
Carolyn Minnich
Project Manager
Brownfields Redevelopment Section
ec: Frran West FWEST(cr�,CrescentCommunities.com
David Franchina, DFranchina(cmcQuirewoods.com
Joseph P. Nestor JNestor(kecslimited.com
NORTHCAROLINAD_E Q�I
OepaN MMEWrmm lQWIRY
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
919.707.8200

TM
BROWNFIELDS ASSESSMENT WORK PLAN REV. 1
MID TOWN USED CARS
1102, 1106, and 1018 SOUTH TRYON STREET
CHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA
ECS PROJECT NO. 49:10606-G
BROWNFIELDS PROJECT ID: 26019-22-060
PREPARED FOR
CC TREA Carson Station, LLC
661 South Tryon Street, Suite 800
Charlotte, North Carolina 28202
SUBMITTED: DECEMBER 23, 2022
REVISED: JANUARY 13, 2023

W
ECS SOUTHEAST, LLP "Setting the Standard for Service"
r Geotechnical • Construction Materials Environmental • Facilities
January 13, 2023
North Carolina Department of Environmental Quality
Division of Waste Management, Brownfields Section
217 West Jones Street
1646 Mail Service Center
Raleigh, North Carolina 27669-1646
Attn: Carolyn Minnich, Brownfields Project Manager
Reference: Brownfields Assessment Work Plan Rev
Mid Town Used Cars
1102, 1106, and 1018 South Tryon Street
Charlotte, Mecklenburg County, North Carolina
North Carolina Brownfields ID No. 26019-22-060
ECS Project No. 49:10606-G
Dear Ms. Minnich,
ECS Southeast, LLP (ECS) has prepared this work plan to conduct Brownfields Assessment Activities
at the subject property on behalf of our client, CC TREA Carson Station, LLC. This plan has been
developed at the request of the North Carolina Department of Environmental Quality (NCDEQ)
Division of Waste Management (NCDWM) — Brownfields Program (BP) during a conference call
conducted on February 14, 2022.
If you have any questions concerning this work plan or this project, please contact us.
Sincerely,
ECS SOUTM LPA R ®Ao '•.,
r^ � `4
,. j....-�."". EA L 1 3
Christi r D. 0!21566G.
Env
Manager
NC Corporate'Qepjgg��; Whse #C-553
cc: Ms. Fran West — CC TREA Carson Station, LLC
Mr. David Franchina — McGuireWoods LLP
il1.
Josep P. Nestor, P.G., P.E.
Environmental Principal
inestorPecslimited.com
1812 Center Park Drive; Suite D, Charlotte, NC 28217 - 1, 704-525-5152 . www.er-slimited.com
ECS Capitol Services, PLLC • ECS Florida, LLC • ECS Mid -Atlantic, LLC • ECS Midwest, LLC ECS Southeast, LLP • ECS Southwest, LLP
NC Engineering .Na..F-1078 • NC Ge:otogy No: C-553 ^ SC Ergirleerinq No, 3139

Brownfields Assessment Work Plan Rev. 1
Mid Town Used Cars
Brownfields Project ID: 26019-22-060
ECS Project No. 49:10606-G
January 13, 2023
TABLE OF CONTENTS
1.0 INTRODUCTION........................................................................................................1
2.0 SCOPE OF WORK.....................................................................................................1
2.1 Soil Boring Advancement.....................................................................................................1
2.2 Groundwater Sample Collection..........................................................................................1
2.3 Exterior Soil Gas Probe Installation......................................................................................2
2.4 Sub -Slab Soil Gas Probe Installation....................................................................................2
2.5 Deviation from Approved Plan............................................................................................3
3.0 SAMPLING METHODOLOGY....................................................................................3
3.1 Soil Sampling........................................................................................................................3
3.2 Groundwater Sampling........................................................................................................4
3.3 Exterior Soil Gas Sampling...................................................................................................4
3.4 Sub -Slab Soil Gas and Sampling...........................................................................................5
4.0 LABORATORY ANALYSES...................................................................................... 6
4.1 Soil Sample Analyses............................................................................................................6
4.3 Exterior Soil and Sub -Slab Soil Gas Analyses........................................................................6
5.0 QUALITY ASSURANCE/QUALITY CONTROL.........................................................6
6.0 INVESTIGATIVE DERIVED WASTE..........................................................................7
7.0 REPORTING...............................................................................................................7
FIGURES
Figure 1
Site Topographic Map
Figure 2
Site Location Map
Figure 3
Historical Sample Location Map
Figure 4
Proposed Sample Location Map
TABLE
Table 1 Proposed Sample Locations & Analysis
APPENDIX
Appendix A NCDEQ Brownfields Property Receptor Survey/Checklist

Brownfields Assessment Work Plan Rev. 1
Mid Town Used Cars
Brownfields Project ID: 26019-22-060
ECS Project No. 49:10606-G
January 13, 2023
1.0 INTRODUCTION
The subject property is located at 1102, 1106, and 1018 South Tryon Street in Charlotte, Mecklenburg
County, North Carolina (Figure 1 & 2). According to the Mecklenburg County Online GIS website, the
subject property is identified with Parcel Identification Numbers (PINs) 07305302, 07305303, 07305304,
and 07305305, consists of 2.77 acres, and is owned by CC TREA Carson Station LLC. Based on the available
information, the subject property is developed and occupied by an Enterprise car rental facility and
parking lots. ECS completed a Phase I Environmental Site Assessment (Phase I ESA) at the site on
December 11, 2019 (ECS Project No. 10606). Additionally, ECS completed a Report of Environmental
Assessment on November 21, 2021 (see Figure 3 for historical sample locations). Based on the results of
the Report of Environmental Assessment, a Brownfields Property Application was completed and
submitted in March 2022. The site was subsequently assigned Brownfields Project Number 26019-22-060.
Based on a kick-off call between the interim Brownfields Project Manager, the client, their attorney, and
ECS, ECS was requested to provide this Brownfields Work Plan prior to the associated additional
Brownfields Assessment.
Currently the site is not regulated by another NCDEQ program; therefore, the data is to be collected solely
for the NC Brownfields Program.
2.0 SCOPE OF WORK
The scope of work described by media below generally includes the collection of soil samples from six
representative areas across the site, collection of groundwater samples from five previously installed
piezometers, collection of five exterior soil gas samples, and collection of one sub -slab soil gas sample.
The drilling activities will be conducted in general accordance with Well Construction Rules (NCAC 2C),
Science and Ecosystem Support Division (SESD) Guidelines, and the most current version of the North
Carolina Department of Environmental Quality (NCDEQ) Vapor Intrusion Guidelines.
2.1 Soil Boring Advancement
• ECS will observe the advancement of 5 borings in 10 representative areas across the site, for a total
of 50 soil borings, in order to assess site soils. The borings will be advanced to depths of approximately
5 to 20 feet below ground surface dependent on the area and based on proposed excavation plans (ft
bgs). Based on the proposed sampling methodology, approximately one set of soil samples (grab and
composite) will be collected and submitted for laboratory analysis per approximately 1,100 cubic
yards of proposed export.
• The borings will be conducted utilizing a direct push technology (DPT) type drilling rig. The proposed
boring and sample locations are shown on Figure 4.
2.2 Groundwater Sample Collection
• ECS will collect groundwater samples from the five previously installed piezometers at the site (P-1
through P5 - Figure 4).
• The relative elevations and horizontal position of the top of each piezometer casing will be
determined by a North Carolina licensed surveyor. ECS will subsequently calculate the groundwater
1

Brownfields Assessment Work Plan Rev. 1
Mid Town Used Cars
Brownfields Project ID: 26019-22-060
ECS Project No. 49:10606-G
January 13, 2023
elevation by subtracting the measured depths to water at each piezometer located at the site from
their respective surveyed tops of casing. ECS will use the calculated groundwater elevation data to
infer the groundwater flow direction below the subject property.
2.3 Exterior Soil Gas Probe Installation
ECS anticipates that eight exterior soil gas samples will be collected from the locations shown on
Figure 4 to assess the soil gas in the vicinity of the multi -family portion of the redevelopment and
elevator pits. The soil gas samples will be collected in Summa canisters as described in subsequent
paragraphs.
The temporary soil gas sample point will be constructed by advancing a boring to a depth of 10 feet
bgs using a DPT type drill rig. The use of the DPT type drill rig involves driving a hollow rod with plastic
liner set inside the rod using a hydraulic ram. As the rod penetrates the subsurface, soil is collected
within the plastic liner. The rod is then extracted, and the liner is removed and cut open exposing soil
which can be examined.
An expendable stainless -steel vapor implant connected to a length of Nylaflow tubing will be
positioned in the boring at the sample point. The implant will be positioned near the bottom of the
boring. The annular space around and approximately 6 inches above the implant will be backfilled
with clean filter sand and bentonite will be placed in the remaining annular space. Distilled water will
be poured into the bentonite and allowed to hydrate for at least 30 minutes before soil gas sampling
is performed.
• The soil vapor sample will not be collected for approximately 12 hours (or overnight) after installation
by DPT drilling, in an effort to allow the soil vapors to stabilize prior to sample collection. This waiting
period is also to allow for dissipation of potential 1,3-butadiene that has been documented to be
produced due to friction during DPT boring advancement.
2.4 Sub -Slab Soil Gas Probe Installation
ECS anticipates that one sub -slab soil gas sample will be collected using a hammer drill to penetrate
through the concrete slab at the approximate location shown on Figure 4. If ECS is unable to access
the current building, an exterior soil gas sample will be collected instead in the same manner as the
previously discussed exterior soil gas samples. Once the concrete slab has been penetrated, a new
VaporPin' with a new silicon sleeve will be inserted in the concrete slab in general conformance with
manufacturer's recommendations (Vapor Pin Enterprises, Inc.). The VaporPin° setup will be allowed
to equilibrate for at least 20 minutes prior to leak testing.
A sample train consisting of non -reactive tubing and microvalves will be connected to a VaporPin'
and to a Summa canister. A shut-in test will be performed on the sample train to confirm that leaks
are not present in the sampling train. A microvalve at the connection between the sampling train and
the VaporPin' will be closed, and a vacuum will be applied to the sampling train using a disposable
syringe. The vacuum gauge on the Summa canister will be monitored for declining vacuum indicative
of a leak. If a leak is indicated by a shut-in test, steps will be taken achieve better connections in the
sample train.
Prior to sample collection, the seal of the VaporPin' will be leak tested using helium gas, a shroud,
and a helium detector as recommended in the most current version of the NCDEQ Division of Waste
Management (DWM) Vapor Intrusion Guidance. A shroud will be placed and sealed over the

Brownfields Assessment Work Plan Rev. 1
Mid Town Used Cars
Brownfields Project ID: 26019-22-060
ECS Project No. 49:10606-G
January 13, 2023
VaporPin° and sample train. The shroud will be flooded with helium via the hose placed through the
shroud wall. The concentration of helium inside the shroud will be measured with a helium detector
(Model MGD-2002 Multi -Gas Leak detector or similar device). The sample train and interstitial space
of each VaporPin° will be purged of at least 3 volumes via tubing routed through the wall of the shroud
to a syringe. The flow rate during purging will be at a rate of 200 milliliters per minute (mL/min) or
less. Following purging, a soil gas sample will be withdrawn and extracted soil gas will be directed to
a Tedlar bag and monitored with a helium detector. If the concentration measured is less than 10
percent of the helium concentration inside the shroud, the seal on the VaporPin° and sampling train
will be considered to be tight and not leaking. If a leak is noted, ECS will make adjustments and repeat
the testing process.
• ECS will obtain a one -liter Summa canisterfrom a commercial laboratorythat follows NELAC standards
and participates in the NELAP. The canister will be pre -cleaned and pre -evacuated so that it is under
negative pressure (i.e., under vacuum). The canister will be batch certified by the laboratory. The
Summa canister will be outfitted with a flow regulator set to 200 mL/min and a vacuum gauge.
2.5 Deviation from Approved Plan
This work plan is intended to be dynamic and to be adapted to specific and actual site conditions.
Accordingly, should such conditions warrant a change either by addition, deletion or modification of a
procedure, such may be accomplished with agreement between the Prospective Developers'
representative and ECS after consultation with, and subject to approval by the North Carolina Brownfields
Program (NCBP). Such changes will comply with applicable local, State, and Federal rules and regulations.
A written amendment shall be prepared and submitted to NCBP for approval (the use of e-mail
correspondence shall suffice for approval) prior to implementation. The amendment and approval will be
included in the report for final documentation. Amendments must have the approval of the NCDEQ
Brownfields Program prior to implementation.
3.0 SAMPLING METHODOLOGY
The sampling activities will be conducted in general accordance with Well Construction Rules (NCAC 2C),
SESD Guidelines, and the most current version of the NCDEQVapor Intrusion Guidelines. The piezometers
will be sampled using low -flow sampling techniques in general conformance with USEPA Low Stress/Low
Flow Purging and Sampling Procedure for the Collection of Groundwater Samples from Monitoring Wells
Guidelines (Revised September 19, 2017).
3.1 Soil Sampling
• ECS will provide a project professional to collect soil continuously from the ground surface to the
termination depth of the soil borings. The soil from each boring within each area will be field screened
for apparent evidence of impacts by observing for staining, petroleum or chemical odors, and relative
volatile organic vapor readings using a Photoionization Detector (PID). In general, soil samples will be
collected over approximate five-foot horizons (0-5 feet bgs, 5-10 feet bgs, 10-15 feet bgs, and 15-20
bgs).
3

Brownfields Assessment Work Plan Rev. 1
Mid Town Used Cars
Brownfields Project ID: 26019-22-060
ECS Project No. 49:10606-G
January 13, 2023
• The soil borings will be backfilled with the soil cuttings generated during the boring activities and
capped with asphalt, soil, or concrete, as appropriate. A summary of the proposed samples and
analyses are provided in Table 1.
• Soil samples will be placed into laboratory supplied containers as soon as possible after collection.
Samples will be submitted to the laboratory daily during the sampling activities.
3.2 Groundwater Sampling
Each piezometer will be opened and allowed to equilibrate for approximately 30 minutes or more.
After equilibration, the depth to water in each piezometer will be measured. Following depth to water
measurements, each piezometer will be sampled using low -flow sampling techniques and water
quality measurements will be recorded. As part of the low -flow sampling techniques, each piezometer
will be purged until the water is visibly free of sediment and pH, temperature, and specific
conductivity have stabilized. Stabilization will be considered achieved when three consecutive
readings are within the limits shown below:
o Turbidity (less than 10 NTU, or within 10%)
o Dissolved Oxygen (three values less than 0.5 mg/L or within 10%)
o Specific Conductance (3%)
o Temperature (3%)
o pH (within 0.1 standard pH unit)
o Oxidation/Reduction Potential (within 10 millivolts)
• As stated above, ECS will contract with a North Carolina licensed surveyor to vertically and horizontally
locate the newly installed piezometers. The survey data will be presented in tabular form.
• A summary of the proposed samples and analyses are provided in Table 1.
• Groundwater samples will be collected directly into laboratory supplied containers and submitted to
the laboratory daily during the sampling activities.
• Following completion of the Brownfields Assessment activities and/or prior to construction, and with
approval of the Brownfields Program, the piezometers will be abandoned in general accordance with
North Carolina well construction standards.
3.3 Exterior Soil Gas Sampling
• ECS will check and note the vacuum on the Summa Canister before initiating the sampling procedure.
If the initial vacuum prior to sample collection is less than 10 percent of the vacuum documented by
the laboratory at shipment, the Summa canister will not be used. Prior to collecting the soil gas
sample, a sample train consisting of non -reactive tubing and micro -valves will be connected to the
Nylaflow tubing at each sample point and to a Summa canister. The sample train will be used to purge
the sample lines and direct flow to the Summa canister being used to collect the sample. A shut-in
test will be performed on the sample train to confirm that leaks are not present in the sampling train.
A micro -valve at the connection between the sampling train and the Nylaflow tubing will be closed,
and a vacuum will be applied to the sampling train using a disposable syringe. The vacuum gauge on
the Summa canister will be monitored for declining vacuum indicative of a leak.
• Prior to collecting the soil gas sample, a helium shroud leak test will be performed at the sample point
to confirm the integrity of the subsurface bentonite seal. The shroud will be placed and sealed over
the sampling point and entire sampling train including the Summa canister. The vapor implant sample
4

Brownfields Assessment Work Plan Rev. 1
Mid Town Used Cars
Brownfields Project ID: 26019-22-060
ECS Project No. 49:10606-G
January 13, 2023
tubing and tracer gas tubing will be routed through small diameter holes in the wall of the shroud.
The shroud will be flooded with helium from a compressed gas tank through tracer gas tubing routed
through the shroud wall. The helium gas concentration inside the shroud will be measured with a
helium gas detector. After the shroud has been flooded with helium gas, three volumes of vapor will
be purged from the tubing and sand pack, following which, a soil gas sample will be screened from a
Tedlar bag for the presence of helium. If the soil gas sample contains less than 10 percent of the
concentration inside the shroud, the test will be considered acceptable. If the test results are not
acceptable, ECS will take steps to achieve a better bentonite seal.
• Following successful shut-in and helium shroud tests, ECS will collect the soil gas samples. ECS will
obtain a one -liter Summa canisters from a commercial laboratory that follows National Environmental
Laboratory Accreditation Conference (NELAC) standards and participates in the National
Environmental Laboratory Accreditation Program (NELAP). The canisters will be pre -cleaned and pre -
evacuated so that it is under negative pressure (i.e., under vacuum). The canisters will be batch
certified by the laboratory. The Summa canisters will be outfitted with a flow regulator set to 200
mL/min and a vacuum gauge. ECS will open the valve on the Summa canister and soil gas will flow
into the canister. ECS will note the time the valve is opened and the initial vacuum. If the initial
vacuum prior to sample collection is less than 10 percent of the vacuum documented by the
laboratory at shipment, the Summa canister will not be used. When the vacuum has decreased to
approximately 5 inches of mercury, ECS will shut the valve and record the time and final vacuum. In
addition, the vacuum will not be allowed to reach zero inches of mercury. ECS will request that the
laboratory report the vacuum reading for each cannister when it is received by the laboratory.
• Following sample collection, the canister will be labeled and shipped to the commercial laboratory
using COC protocols for analysis.
• Following completion of soil gas sampling activities, the soil gas sampling point will be abandoned,
and the boring backfilled with the soil cuttings generated during the boring activities and capped with
asphalt, soil, or concrete, as appropriate. A summary of the proposed sample and analysis are
provided in Table 1.
3.4 Sub -Slab Soil Gas and Sampling
• ECS will check and note the vacuum on the Summa Canister before initiating the sampling procedure.
If the initial vacuum prior to sample collection is less than 10 percent of the vacuum documented by
the laboratory at shipment, the Summa canister will not be used. ECS will open the valve on each
Summa cannister to initiate sampling. ECS will terminate the sampling procedure at each sampling
point while a vacuum of at least 5 inches of mercury is still present in the canister. ECS will note the
vacuum for the canister at the end of the sampling procedure. In addition, the vacuum will not be
allowed to reach zero inches of mercury.
• The Summa canister will be submitted to a NELAP certified laboratory for analyses of VOCs by EPA
Method TO-15. ECS will request that the laboratory analyze vapor samples for the most current and
applicable standards from NELAP. The laboratory will be instructed to use reporting limits below the
appliable NCDEQ screening levels and to report the vacuum measurement for each sample canister
at receipt by the laboratory.
• ECS will follow chain -of -custody procedures throughout the sample collection and transportation
process. The results of the laboratory analysis will be compared to the NCDEQ, Division of Waste
Management (DWM) Residential and Non -Residential VISLs.
5

Brownfields Assessment Work Plan Rev. 1
Mid Town Used Cars
Brownfields Project ID: 26019-22-060
ECS Project No. 49:10606-G
January 13, 2023
• Following completion of sub -slab soil gas sampling activities, the sub -slab soil gas sampling point will
be abandoned, and the borings capped with concrete. A summary of the proposed sample and
analysis are provided in Table 1.
4.0 LABORATORY ANALYSES
The soil and groundwater samples will be submitted to a North Carolina certified laboratory for analysis.
Since North Carolina does not certify laboratories for analyses of air samples, ECS will request that the
laboratory analyze air samples for the most current and applicable standards from NELAP. The laboratory
will be instructed to use reporting limits below the IHSB Preliminary Soil Remediation Goals, NCAC 2L
Groundwater Quality Standards, and the NCDEQ, DWM Residential and Non -Residential VISLs.
Additionally, it will be requested that the method detection limits (MDL), and J-flags be included. The
laboratory will also be instructed to report the vacuum measurement for each Summa canister at receipt
by the laboratory. Level II QA/QC will be requested to be reported by the laboratory.
4.1 Soil Sample Analvses
Based upon field screening results, one soil sample from each of the five-foot intervals within each of the
ten Areas will be collected and submitted for laboratory analysis of Volatile Organic Compounds (VOCs)
using EPA Method 8260. As such, Areas 1 through 6 will have four discreet VOC soil samples (one from
each five-foot vertical interval) each, Areas 7 and 8 will have two discreet VOC samples each, and Areas 9
and 10 will have one discreet VOC sample each. The VOC samples will be collected and submitted for
laboratory analysis.
Soil from each 5-foot vertical interval across the five borings in each Area will be composited and
submitted for laboratory analysis of Semi -Volatile Organic Compounds (SVOCs) using EPA Method 8270
selective ion monitoring (SIM), Resource Conservation and Recovery Act (RCRA) Metals using EPA Method
6020 and 7471, and hexavalent chromium using EPA Method 7199. As such, up to four composite samples
will be collected and submitted from Areas 1 through 6 for laboratory analysis, up to two composite
samples will be collected and submitted from Areas 7 and 8 for laboratory analysis, and one composite
sample will be collected and submitted from Areas 9 and 10 for laboratory analysis.
4.2 Groundwater Sample Ana
Groundwater samples from the piezometers will be analyzed for VOCs by EPA Method 8260, SVOCs by
EPA Method 8270, and RCRA metals by EPA Method 6020 and 7470.
4.3 Exterior Soil and Sub -Slab Soil Gas Ana
The soil gas samples will be submitted for analyses of VOCs by EPA Method TO-15.
5.0 QUALITY ASSURANCE/QUALITY CONTROL
Following the collection of the samples described above, the sample containers will be labeled and
shipped to a commercial laboratory using COC protocols to be analyzed.
Ci

Brownfields Assessment Work Plan Rev. 1
Mid Town Used Cars
Brownfields Project ID: 26019-22-060
ECS Project No. 49:10606-G
January 13, 2023
In addition to the above samples, for Level II quality control/quality assurance (QA/QC) purposes one
exterior soil gas and one groundwater duplicate sample will be collected. The duplicate exterior soil gas
sample will be collected in conjunction with the respective record sample via a "tee" connection in the
tubing. Also, one duplicate soil sample per day of sample collection will also be collected. The duplicate
samples will be submitted for the same analyses as the record sample they are associated with. Duplicate
samples will be submitted to the laboratory without identification as to their respective record samples.
6.0 INVESTIGATIVE DERIVED WASTE
Investigative derived waste (IDW) generated at the site (i.e., soil cuttings, development water, and purge
water) will managed in general accordance with NCDEQ-DWM-IHSB Program's Guidelines for Assessment
and Cleanup (Revised July 2021). IDW will be placed onsite in the vicinity of the location it was generated,
unless impacts are apparent based on field screening observations (i.e., visual and/or olfactory senses or
elevated PID/FID readings), in which case these materials will be containerized in 55-gallon drums.
7.0 REPORTING
ECS will prepare a written report documenting the field activities, sampling procedures, sample locations,
laboratory procedures and analytical results discussion, and conclusions for submission to the NCBP. The
report will include a sample location figure, groundwater potentiometric map, boring logs, field notes,
and data tables. The soil sample results will be compared to the most current NCDEQ Residential
Preliminary Soil Remediation Goals (PSRGs), and the groundwater samples will be compared to the
current North Carolina 2L Groundwater Quality Standards and Groundwater Screening Levels (GWSL) for
Vapor Intrusion (VI). The exterior soil gas sample results and sub -slab soil gas sample results will be
compared to the current NCDEQ, IHSB, Residential and Non -Residential VISLs for Sub -slab and Exterior
Soil Gas. If positive detections are noted, the soil, groundwater, exterior soil gas, and sub -slab soil gas
sample results will also be input into the most current version of the NCDEQ Risk Calculator to assess if
the results exceed applicable risk thresholds. Sample collection logs for soil gas and groundwater samples
will be included in the report. The sample collection logs for soil gas samples will include helium leak
checks results, site specific Safety Data Sheets if necessary, and photographs of the sample arrays. The
sample collection logs for groundwater samples will include well information and field geochemistry data
for low -flow groundwater sampling. The report will be signed and sealed by a North Carolina Professional
Engineer or Licensed Geologist. The report will also include the identification numbers for ECS's corporate
Professional Engineers and Geologists Licenses.
The Brownfields Property receptor survey will be completed and summarized in the report. The NCDEQ
Brownfields Property Receptor Survey/Checklist will be included as an attachment to the report.
VA

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PE: JN
DATE: January 12, 2023
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PE: JN
DATE: January 12, 2023
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Legend , �;� ,fir►
-Approximate Property Boundary ' • r
p - Soil Sample Location
- Groundwater Sample \ o
- Soil/Groundwater Sample Location
- Soil Gas Sample Location ` oM -N- P ••
® - Elevator Pit
0 - Multifamily (On Grade)
0 - Multifamily (Above Grade) j . • q i
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Scale `
0 35 70
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1 inch =70 ft.�/` �t
PROJECT#: 49-10606-G W. Carson Blvd. & S. Tryon Street Site
DRAWN BY: TL 1102, 1106, and 1018 South Tryon Street
ASSIGN TO: CO Charlotte, Mecklenburg, County, NC 28203
Er�. PE: JN
DATE: January 12, 2023
Figure
REVISED: ---- Historical Sample Location Map
- SCALE: 1"=70' 3
PRINTED: 1/12/20233: 54 PM \\OneDrive-ECSCorporate Services\DWG\Projects\41\10606Carson Tryon\G\49-10606-GPigures R2

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Legend
-Approximate Property Boundary
— — — - Soil Sample Areas
p - Proposed Soil Sample Location
■ - Proposed Soil Gas Sample Location ;t'" s r N
• - Proposed Sub -Slab Soil Gas Sample Location
- Piezometer Location r :, ` ,
®
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0 - Multifamily (3,140 sq. ft. on Grade)
AREA 10
Q - Multifamily (Above Grade) _;.
rt" / ' SG-6
AREA 95
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Scale 1 s
0 35 70 y
1 inch =70 ft.
PROJECT#: 49-10606-G W. Carson Blvd. & S. Tryon Street Site
Nor, DRAWN BY: TL 1102, 1106, and 1018 South Tryon Street
ASSIGN TO: CO Charlotte, Mecklenburg, County, NC 28203
PE: JN
DATE: January 12, 2023
Figure
REVISED: ---- Proposed Sample Location Map
SCALE: 1"=70' 4
PRINTED: 1/12/20233: 54 PM C\OneDr- ECs Corporate Services\DWG\Projects\41\10606 Carson Tryon\G\41 0606-G Figures R2

TABLES

TABLE 1 - PROPOSED SAMPLE LOCATIONS & ANALYSIS
MID TOWN USED CARS
ECS PROJECT NO.49-10606-G
BROWNFIELDS PROJECT NO.: 26019-22-060
Sample Media
Depth of Collection (feet)
Est. Volume (yards)
Laboratory Analysis & Analytical Method
VOCs
SVOCs
RCRA Metals
Cr VI
Soil Samples*
Area 1 (Composite)
0-5, 5-10, 10-15, 15-20
-4,400
NS
8270 (SIM)
6020/7471
7199
Area 1 (Grab)
0-5, 5-10, 10-15, 15-20
-4,400
8260
NS
Area 2 (Composite)
0-5, 5-10, 10-15, 15-20
-4,400
NS
8270 (SIM)
6020/7471
7199
Area 2 (Grab)
0-5, 5-10, 10-15, 15-20
-4,400
8260
NS
Area 3 (Composite)
0-5, 5-10, 10-15, 15-20
-4,400
NS
8270 (SIM)
6020/7471
7199
Area 3 (Grab)
0-5, 5-10, 10-15, 15-20
-4,400
8260
NS
Area 4 (Composite)
0-5, 5-10, 10-15, 15-20
-4,400
NS
8270 (SIM)
6020/7471
7199
Area 4 (Grab)
0-5, 5-10, 10-15, 15-20
-4,400
8260
INS
Area 5 (Composite)
0-5, 5-10, 10-15, 15-20
-41400
114")
8270 (SIM)
6020/7471
7199
Area 5 (Grab)
0-5, 5-10, 10-15, 15-20
-4,400
8260
IN-)
NS
Area 6 (Composite)
0-5, 5-10, 10-15, 15-20
-4,400
NS
8270 (SIM)
6020/7471
7199
Area 6 (Grab)
0-5, 5-10, 10-15, 15-20
-4,400
8260
N5
INS
NS
Area 7 (Composite)
0-5, 5-10
-2,200
NS
8270 (SIM)
6020/7471
7199
Area 7 (Grab)
0-5, 5-10
-2,200
8260
N�
NS
NS
Area 8 (Composite)
0-5, 5-10
-2,200
NS
8270 (SIM)
6020/7471
7199
Area 8 (Grab)
0-5, 5-10
-2,200
8260
N!
NS
NS
Area 9 (Composite)
0-5
-1,100
NS
8270 (SIM)
6020/7471
7199
Area 9 (Grab)
0-5
-1,100
8260
Nip
NS
NS
Area 10 (Composite)
0-5
-1,100
"Ic
8270 (SIM)
6020/7471
7199
Area 10 (Grab)
0-5
-1,100
8260
nic
Dup - S1 (Composite)
TBD
NA
ni01
8270 (SIM)
6020/7471
7199
Dup - S1 (Grab)
TBD
NA
8260
NS
Dup - S2 (Composite)
TBD
NA
NS
8270 (SIM)
6020/7471
7199
Dup - S2 (Grab)
TBD
NA
8260
Dup - S3 (Composite)
TBD
NA
NS
8270 (SIM)
6020/7471
7199
Dup - S3 (Grab)
TBD
NA
8260
NS
Groundwater Samples
P-1
TBD
NA
8260
8270
6020/7470
NS
P-2
TBD
NA
8260
8270
6020/7470
NS
P-3
TBD
NA
8260
8270
6020/7470
NS
P-4
TBD
NA
8260
8270
6020/7470
NS
P-5
TBD
NA
8260
8270
6020/7470
NS
Dup-W
TBD
NA
8260
8270
6020/7470
NS
Soil Vapor
SS-1
Beneath Slab
NA
TO-15
NS
NS
NS
SG-5
10
NA
TO-15
NS
NS
NS
SG-6
10
NA
TO-15
NS
NS
NS
SG-7
10
NA
TO-15
NS
NS
NS
SG-8
10
NA
TO-15
NS
NS
NS
SG-9
10
NA
TO-15
NS
NS
NS
SG-10
10
NA
TO-15
NS
NS
NS
SG-11
10
NA
TO-15
NS
NS
NS
SG-12
10
NA
TO-15
NS
NS
NS
Dup-SG
TBD
NA
TO-15
NS
NS
NS
Notes:
VOCs = Volatile Organic Compounds
SVOCs = Semi -Volatile Organic Compounds
RCRA = Resource Conservation & Recovery Act
Cr VI = Hexavalent Chromium
NS = Not to be Sampled for this analysis
TBD = To Be Determind
*Soil samples will be collected such that one discrete sample will be collected for VOC analysis from each sample interval within each area. Soil from each boring
and each depth within each area will be composited for SVOCs, RCRA Metals, and Cr VI analysis. As such, five grab samples, and five composite samples will be
collected and submitted for laboratory analysis from each area. The boring selected for each grab sample depth will be based upon field screening results.

APPENDIX A

North Carolina Department of Environmental Quality
Division of Waste Management
Brownfields Program
BROWNFIELDS PROPERTY RECEPTOR SURVEY
This form was created to clarify and simplify preparing a receptor survey for a brownfield site. Please provide the
information requested below. Distances are measured from the site property boundary unless otherwise indicated
by the DEQ Brownfield's Project Manager (PM).
Site:
Address:
City:
County:
Brownfields Project Number:
Property and Building Characteristics
Surface Conditions
Current Usage
Proposed Usage
Size of Property (acres)
NA
% of property that is wooded/brush
% of property that is grassed areas
% of property that is agricultural crops
% of property that is paved
% of property that is covered by buildings
If an existing building is on -site, please respond to the following. Information can be provided on additional sheets
as needed. If numerous buildings are on -site, consult with your PM as only information on specific buildings may
be needed.
a. Provide occupancy and use information.
b. Describe the construction of the building including materials (e.g. wood frame, block), type and size of openings
(e.g. windows, bay doors), and height (number of stories).
c. Describe the foundation construction. Include details on type, floor construction, and depth below grade.
d. Describe the HVAC system in the building. Include available details on type, equipment location, source of air
return, and design considerations (e.g. positive pressure?).
e. Are any subslab ventilation systems or moisture barriers in place? If so, please provide details.
No subslab ventilation systems in place. It is not known if moisture barriers are in place.
Rev. 09/2015 Page 1 of 3

North Carolina Department of Environmental Quality
Division of Waste Management
Brownfields Program
Surrounding Property Land Use
Please provide information on the following land uses in the vicinity of the subject site, including a map of the
surrounding areas. If specific receptors are present, please provide addresses of the facilities.
Zoning/Land Use
Current Use,/Occupant
Proposed Usage
Specific Land Uses of Interest
Y/N
Distance
Direction
Address
Is a school or daycare center within 1,000 ft of the
Is there a residence within 1,000 ft of the Property?
Is there a basement within 1,000 ft of the Property?
* If numerous facilities of interest are present, their locations can be placed on a map in lieu of providing specific
addresses.
Utilities
For the subject property, please provide a map of known buried utilities. If available, include depth to top,
construction material, and diameter of the utilities. In addition, please provide the following information on utility
providers. If additional assessment is required, the public utility locators should be contacted. This information
can then be added to a site map.
Is there a septic system on -site? (Y or N) N
Please provide the utility providers for the subject property
a. Natural Gas
b. Sewer
c. Electricity
d. Other
For surrounding properties, please complete the following table with available information.
Utility/Potential Receptor
Y/N
Distance
Direction
Is a storm water pipe within 100 ft of the Property boundary?
Is a sanitary sewer within 100 ft of the Property boundary?
Is a septic system leach field within 500 ft of the Property boundary?
Is a water line main within 100 ft of Property boundary?
Is a natural gas line main within 100 ft of the Property boundary?
Is a buried telephone/ cable main within 100 ft of the Property boundary?
Is a buried electrical cable main within 100 ft of Property boundary?
If yes, please provide a map or detailed information (distance, direction, depth) of the utility in correlation with
the subject property.
Rev. 09/2015 Page 2 of 3

North Carolina Department of Environmental Quality
Division of Waste Management
Brownfields Program
Water Supply
The purpose of this section is to provide information on the water supply for the site and surrounding areas.
What is the potable water supply for the property? Public Private
If Private, please provide details of the water supply source (i.e. well location, well construction, etc.). If public,
please include the water providers name.
Please provide the following information regarding water supply wells in the vicinity of the Property. At a
minimum, a windshield survey within 1,500 ft of the property boundaries should be completed to determine if
water supply or irrigation wells may be present. Information from applicable databases can and should be
utilized; however, should not be utilized in lieu of the windshield survey. If multiple wells are present within the
requested radius, please provide a map of the well locations. If needed, please attach a separate table to list all
wells. Please note, the PM may opt for a more extensive water supply well survey if needed.
Water Supply Wells
E_
YIN
Distance
Direction
Address
Is a public water supply well within 1 mile of the Property boundary?
Is a private water supply well within 1,500 ft of the Property
Is an irrigation well within 1,500 ft of the Property boundary?
Surface Water & Wetlands
The purpose of this section is to provide information on the presence of surface waters and/or wetlands on, or in
the vicinity of the Property.
Provide Information regarding Surface Water
Response/Comments
and Wetlands
Are there surface water features on the
property? (If yes, please complete a. to d.)
a. Is the water body naturally developed or
man-made?
b. List the uses of the water body.
c. What is the source of the water for the
water body?
d. What is the nature of the bottom of the
water body (e.g., rocky or concrete bottom,
drainage ways or impoundments)
If no on -site surface water features, what is the
nearest surface water body?
Are there any wetlands present on the
property? If no wetlands on -site, are wetlands
suspected on adjoining properties?
Rev. 09/2015 Page 3 of 3