25036_Brownfields Assessment Work Plan Rev 1 and Approval_20220202

February 2, 2022
Sent Via E-mail

Kyle Jenks 4000 Monroe, LLC 1427 Mayson Street Atlanta, GA 303244
[e-mail] Subject: Brownfields Assessment Work Plan Approval Clariant Corporation 4000 Monroe Road
Charlotte, Mecklenburg County Brownfields Project Number 25036-21-060 Dear Mr. Jenks,
The North Carolina Department of Environmental Quality (DEQ) Brownfields Program received and reviewed the Brownfields Assessment Work Plan, Rev. 1.0 submitted by ECS Southeast, LLP for the above referenced site dated February 1, 2022. Based on our review, the Brownfields Assessment Work Plan, Rev. 1.0 is approved with the condition that the TO-15 analyses proposed in the work plan include naphthalene in the analyte list.
Be advised that this approval from the Brownfields Program does not waive any applicable requirement to obtain any necessary permits, licenses, or certifications for the above referenced activities nor does it waive any requirement to comply with applicable law for such activities. If you have any questions, please feel free to contact me via e-mail at [e-mail].
Sincerely,
Peter L. Doorn
Brownfields Project Manager ec: Jason Nail, 4000 Monroe, LLC Scott Young, ECS Southeast, LLP
Roger Smith, ECS Southeast, LLP
Tracy Wahl, DEQ Brownfields Program

BROWNFIELDS ASSESSMENT WORK PLAN, REVISION 1.0

MONROE ROAD SITE

4000 and 4010 MONROE ROAD
CHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA

ECS PROJECT NO. 49:12929-C
BROWNFIELDS PROJECT ID: 25036-21-060

PREPARED FOR
PARKSIDE PARTNERS
PROSPECTIVE DEVELOPER

SUBMITTED: FEBRUARY 1, 2022
Brownfields Assessment Work Plan, Revision 1.0
Monroe Road Site
Brownfields Project ID: 25036-21-060
ECS Project No. 49:12929-C
February 1, 2022
TABLE OF CONTENTS
1.0 INTRODUCTION .......................................................................................................................... 1
2.0 SCOPE OF WORK ......................................................................................................................... 4
2.1 Monitoring Well Evaluation ................................................................................................. 4
2.2 Soil Boring and Sample Collection ....................................................................................... 4
2.3 Sub-Slab Soil Gas Sampling .................................................................................................. 4
2.4 Indoor Air Sampling ............................................................................................................. 6
2.6 Quality Control/Quality Assurance Sampling ...................................................................... 6
2.7 Deviation from Approved Plan............................................................................................. 6
3.0 RECEPTOR SURVEY ..................................................................................................................... 7
4.0 INVESTIGATIVE DERIVED WASTE ................................................................................................ 7
5.0 REPORTING ................................................................................................................................. 7
FIGURES
Figure 1 USGS Topographic Map
Figure 2 Previous Groundwater Sample Locations Map
Figure 3 Previous Sub-Slab Sample Locations Map
Figure 4 Previous Soil Sample and Temporary Monitoring Well Locations Map
Figure 5 Previous Additional Sub-Slab Sample Locations Map
Figure 6 Proposed Sample Locations Map
TABLE
Table 1 Proposed Samples & Analysis
APPENDIX
Appendix A NCDEQ Brownfields Property Receptor Survey/Checklist
Brownfields Assessment Work Plan, Revision 1.0
Monroe Road Site
Brownfields Project ID: 25036-21-060
ECS Project No. 49:12929-C
February 1, 2022

1

1.0 INTRODUCTION

The subject property is located at 4000 Monroe Road in Charlotte, Mecklenburg County, North Carolina
(Figures 1). According to the Mecklenburg County Online Geographic Information Systems website, the
subject property is identified as Parcel Identification Number (PIN) 15904612 and was owned by Clariant
Corporation (Demerger)/Alisa Bradshaw. The approximately 9.799-acre subject property was developed
with Clariant Corporation, a specialty chemical company. The subject property is developed with an
approximate 92,780-square foot building that is subdivided into Buildings 1-4 that were reportedly
constructed in 1956; an approximate 75,606-square foot building designated as Building 5 that was
reportedly constructed in 1956; an approximately 391-square foot building designated as Building 6 that
was reportedly constructed in 1994; and an approximate 100-aquare foot structure designated as Building
7. ECS previously completed a Phase I Environmental Site Assessment (ESA) on the property for Parkside
Partners/4000 Monroe, LLC, as documented in the report dated January 15, 2021, ECS Project Number
49:12929. The ESA identified the following recognized environmental conditions (RECs):
• Based on the length of industrial and fueling operations of this facility being around 65 years, the
use of chemicals, and the potential for an undocumented release that could impact the subject
property, ECS considered the historic and current use of the site to represent a REC.
• ECS considered the potential for a release from the wastewater treatment activities in Building 6
which was constructed in 1996 and associated piping to represent a REC.
• Based on the lack of closure documentation and the potential for an undocumented release at
the subject property to impact subsurface conditions, ECS considered four former 4,000-gallon
gasoline underground storage tanks (USTs) to represent a REC.
• ECS considered the potential for additional orphan USTs associated with the former gasoline
station on the northwestern portion of the property that operated from around 1962 to 1993 to
represent a REC.
• Based on distance, measured groundwater flow towards the subject property, and documented
impacts to groundwater above regulatory standards, ECS considered the incident associated with
the former gasoline station that operated on the northeast adjoining property from around 1983-
2005 to represent a REC.
• Based on measured groundwater flow towards the subject property and documented impacts to
groundwater in close proximity to the subject property, ECS considered the potential for
chlorinated solvents to have migrated from the east adjoining Takatori facility to represent a REC.
• ECS considers the documented tetrachloroethene (PCE) impacts in groundwater above regulatory
standards during a Phase II ESA at the north adjacent property in 2019 to represent a REC.
• Based on length of service from approximately 1969 to 1994 and the potential for an
undocumented release that could impact the subject property, ECS considers the former
operation of the north adjacent dry-cleaning facility to represent a REC.

In an effort to determine if the subject property had been adversely affected by the identified RECs, ECS
conducted an initial limited environmental assessment at the site as detailed in ECS’s Report of
Environmental Assessment Services (ECS Project No.: 49:12929-A, submitted March 12, 2021).

This initial limited environmental assessment included the following:

Brownfields Assessment Work Plan, Revision 1.0
Monroe Road Site
Brownfields Project ID: 25036-21-060
ECS Project No. 49:12929-C
February 1, 2022

2

• ECS observed the performance of a ground penetrating radar (GPR) survey of the area where a
former gasoline station and three 550-gallon underground storage tanks (USTs) were located in
the northwest corner of the subject property. The results of the GPR survey did not indicate the
presence of any remaining USTs in this area.
• 17 borings (GW-1 through GW-17) were advanced at the site at the locations shown on Figure 2.
Refusal was encountered in borings GW-11 (18 feet below ground surface or ft-bgs) and GW-15
(12 ft-bgs) prior to encountering groundwater. Groundwater samples were collected from the
remaining borings. Review of the laboratory analytical results for the groundwater samples
collected indicated one or more VOCs in the samples collected from borings GW-1, GW-2, GW-4
through GW-7, GW-12, GW-13, GW-16, and GW-17 at concentrations greater than the laboratory
method detection limits. Benzene in the sample collected from GW-13, methyl tert-butyl ether in
the samples collected from GW-12 and GW-13, and tetrachloroethene (also known as
perchloroethene or PCE) in the samples collected from GW-1, GW-2, GW-5, GW-13, GW-16, and
GW-17 were detected at concentrations greater than the North Carolina 2L Groundwater Quality
Standards (NC2LGWQS). In addition, the concentrations of benzene in the sample collected from
GW-13 and PCE in the samples collected from GW-2, GW-5, GW-13, and GW-17 were detected
greater than the NCDEQ Non-Residential Groundwater Vapor Intrusion Screening Level (VISL).
Based on the anticipated groundwater flow direction and the compound concentrations detected
in the groundwater samples collected, it appears the groundwater impacts may have originated
from off-site sources.
• 12 sub-slab soil gas sample points (SG-1 and SG-12) were installed beneath the interior of the
structures on the subject site. The approximate locations of these soil gas samples are shown on
Figure 3. Review of the laboratory analytical results for the samples collected from the sub-slab
sample points indicated several VOCs at concentrations greater than the laboratory method
detection limits in each of the sub-slab samples collected as part of this investigation. The
concentration of chloroform detected in the SG-A sample was present greater than its NCDEQ
Non-Residential Sub-Slab and Exterior Soil Gas VISL. Chloroform is present in municipally supplied
water and is often detected due to leaks in municipal water lines. As chloroform was detected at
a concentration greater than its VISL in the SG-A sample and more than five compounds with non-
cancer effects were detected at concentrations greater than the laboratory method reporting
limits in each of the sub-slab soil gas samples collected as part of this investigation, ECS input the
laboratory analytical results of each sub-slab soil gas sample collected in to the NCDEQ Risk
Calculator. Based on the results of the NCDEQ Risk Calculator, the concentrations in the sub-slab
soil gas samples did not exceed the risk thresholds.

Based upon the results above, Parkside Partners/4000 Monroe, LLC requested additional assessment
activities. ECS prepared a proposal (ECS Proposal No.: 49:23603P, approved April 8, 2021) for the
collection of soil samples, additional groundwater samples, and additional sub-slab soil gas samples. In
addition, ECS was requested to include the collection of groundwater elevation data for the estimation of
groundwater flow direction beneath the site.

ECS submitted the Report of Additional Environmental Assessment Services (ECS Project No. 49:12929-B)
on May 6, 2021, documenting the additional assessment services. This additional environmental
assessment included the following:

Brownfields Assessment Work Plan, Revision 1.0
Monroe Road Site
Brownfields Project ID: 25036-21-060
ECS Project No. 49:12929-C
February 1, 2022

3

• Eight soil borings (B-1 through B-4, SB-1A, SB-2A, SB-13A, and SB-18) were advanced at the site.
The locations of the soil borings are indicated on Figure 4. Review of the laboratory analytical
results for the soil samples collected did not indicate compounds at concentrations greater than
the laboratory method reporting limits in any of the soil samples collected at the site.
• Three temporary monitoring wells (GW-5A, GW-16A, and GW-17A) were installed along the
northern property boundary. In addition, between May 10 and 11, 2021, temporary monitoring
wells GW-1A, GW-2A, GW-13A, and GW-18 were installed in soil borings SB-1A, SB-2A, SB-13A,
and SB-18, respectively. The locations of the temporary monitoring wells are shown on Figure 4.
Review of the laboratory analytical results for the groundwater samples collected indicated
concentrations of PCE in the GW-1A, GW-2A, GW-13A, GW-17A, and GW-18 samples at
concentrations greater than its NC2LGWQS, including the concentrations in the GW-13A and GW-
17A samples which were greater than its Non-Residential Groundwater VISL. Groundwater
sampling points GW-13A and GW- 17A were located along the eastern and northeastern property
boundaries, respectively, of the site. The PCE concentrations detected in groundwater decreased
in the samples collected from the eastern and northeastern property boundaries toward the
interior of the site. In addition, 2-butanone (GW-1A and GW-2A samples), chloroform (GW-17A
sample), chloromethane (GW-13A), and methyl tert-butyl ether (GW-13A and GW-17A) were
detected at concentrations greater than the laboratory method reporting limits, but less than
their respective NC2LGWQS and Non-Residential Groundwater VISL.
• Six sub-slab soil gas sample points (SG-L through SG-Q) were installed in the interior of the
structures of the subject site. The approximate locations of these soil gas samples are shown on
Figure 5. Review of the laboratory analytical results for the samples collected from the sub-slab
sample points indicated several VOCs at concentrations greater than the laboratory method
detection limits in each of the sub-slab samples collected as part of this investigation. Only the
concentrations of chloroform detected in the SG-L sample and PCE in SG-O sample were present
greater than their respective NCDEQ Non-Residential Sub-Slab and Exterior Soil Gas VISLs in the
sub-slab samples collected as part of this assessment. In light of the sub-slab vapor results, ECS
input the laboratory analytical results of each sub-slab soil gas sample collected in to the NCDEQ
Risk Calculator. Based on the results of the NCDEQ Risk Calculator, the concentrations in the sub-
slab soil gas samples did not exceed the risk thresholds for nonresidential use.

Based on the environmental assessment data collected and the planned redevelopment of the site, a
Brownfields Property Application (BPA) was submitted to the NCDEQ, on April 28, 2021, along with the
above referenced assessment services reports. On September 10, 2021, the NCDEQ Brownfields Program
submitted a Letter of Eligibility and established the Brownfields Project Number as 25036-21-060. On
September 30, 2021, the property was purchased by 4000 Monroe LLC c/o Parkside Partners.

On November 4, 2021, ECS presented a Brownfields Kickoff Meeting that summarized the site, previous
assessment activities and results, was well as the proposed site redevelopment activities during a Teams
meeting on, with Parkside Partners, their environmental attorney, and the assigned NCDEQ Brownfields
Project Manager (Mr. Peter Doorn). As a result of the kickoff meeting, in a January 6, 2022, email, Mr.
Doorn submitted a request for additional assessment activities to address potential data gaps, as
identified by the NCDEQ, Brownfields and requested the status of a previously documented monitoring
well that was reportedly located near the southeast property corner, that was part of groundwater
assessment activities for an off-site release. Generally, the additional assessment activities include the
Brownfields Assessment Work Plan, Revision 1.0
Monroe Road Site
Brownfields Project ID: 25036-21-060
ECS Project No. 49:12929-C
February 1, 2022

4

collection and laboratory analysis of additional soil, sub-slab soil gas, and indoor air, as well as completing
a Brownfields receptor survey.

Based upon the January 6, 2022, email from the NCDEQ Brownfields Project Manager, ECS has prepared
this Work Plan to address the data gaps identified by the BF Program.

2.0 SCOPE OF WORK

2.1 Monitoring Well Evaluation

• ECS will attempt to locate a monitoring well reported to be located in the southeast corner of the
property. According to the NC Brownfields Program the monitoring well may be located outside of
the fence near the corner of Wendover Road and the railroad tracks. The well appears to be used as
an offsite, downgradient monitoring well associated with a NCDEQ, Inactive Hazardous Site Branch
(IHSB) site called the NCDOT Asphalt Site #5, which is the current Home Depot property located to the
southeast. If the well is located, ECS will contact the NCDEQ, IHSB group to determine if the well is
still needed.

2.2 Soil Boring and Sample Collection

• ECS will advance three shallow soil borings via decontaminated hand auger at the site in order to
collect background soil samples. The soil borings will be advanced to depths of approximately 2 feet
below ground surface (bgs). The proposed boring and sample locations are shown on Figure 6. Note
that the sample locations may be changed based upon field observations.
• ECS will provide a project professional to collect soils continuously from the ground surface to the
termination depth of the soil borings. The soils will be collected over the length of the boring and
screened in the field by placing a portion into a resealable plastic bag and measuring for volatile
organic vapors using a photoionization detector (PID) after allowing to set for approximately 15
minutes. The remaining soils from each boring will be placed directly into the laboratory sample
containers. The soil samples to be submitted to the laboratory for analysis will be collected from
separate soils than that which was allowed to volatilize for the collection of the PID readings.
• The samples will be submitted for laboratory analysis of volatile organic compounds (VOCs) by EPA
Method 8260, semi-volatile organic compounds (SVOCs) by EPA Method 8270, RCRA Metals by EPA
Method 6010, and hexavalent chromium by EPA Method 7199.
• One duplicate soil sample will be collected per day of sampling and submitted for laboratory analysis
of VOCs, SVOCs, RCRA metals, and hexavalent chromium.
• 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.

2.3 Sub-Slab Soil Gas Sampling

• ECS anticipates that one sub-slab soil gas sample will be collected from seven locations from beneath
the existing building’s concrete slab via VaporPins® installed using a hammer drill to penetrate
through the concrete slab at the approximate locations shown on Figure 6. Once the concrete slab
Brownfields Assessment Work Plan, Revision 1.0
Monroe Road Site
Brownfields Project ID: 25036-21-060
ECS Project No. 49:12929-C
February 1, 2022

5

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 each VaporPin®
and to a Summa canister. A shut-in test will be performed on the sample train at each sample point
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 each VaporPin® will be leak tested using helium gas, a shroud,
and a helium detector as recommended in NCDEQ-DWM Vapor Intrusion Guidance. A shroud will be
placed and sealed over each VaporPin® and sample train. The shroud will be flooded with laboratory
grade 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 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 either one-liter or six-liter Summa canisters from a commercial laboratory that follows
NELAC standards and participates in the NELAP. Each canister will be pre-cleaned and pre-evacuated
so that it is under negative (i.e., under vacuum). The canisters will be batch certified by the laboratory.
Each Summa canister will be outfitted with a flow regulator set to 200 milliliters per minute and a
vacuum gauge.
• ECS will check and note the vacuum on each 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 each canister at the end of the sampling procedure. If the final vacuum is less 5 inches of
mercury the data may be unusable. In addition, the vacuum will not be allowed to reach zero inches
of mercury.
• The Summa canisters 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.
• A summary of the proposed samples and analyses are provided in Table 1.

Brownfields Assessment Work Plan, Revision 1.0
Monroe Road Site
Brownfields Project ID: 25036-21-060
ECS Project No. 49:12929-C
February 1, 2022

6

2.4 Indoor Air Sampling

• ECS proposes to collect indoor air samples, adjacent to each of the above proposed seven sub-slab
vapor sample locations, as shown on Figure 6. The indoor air samples will be collected concurrent
with the above sub-slab vapor samples (i.e., the indoor air samples will be collected first then
immediately after ceasing collection, the adjacent sub-slab sample will be collected).
• During each sample collection event/mobilization, ECS will complete a NCDEQ, Division of Waste
Management Indoor Air Building Survey and Sampling Form.
• ECS will use individually certified 6-liter Summa canister with a flow restrictor provided and calibrated
by the lab such that samples are collected over an 8-hour period beginning between 8 and 10 AM and
ending between 4 to 6 PM. ECS will attempt to the samples on a day when traffic in and out of the
building is expected to be minimized. Custody seals and/or locking of the doors will be utilized to
ensure the traffic is minimized.
• ECS will place each Summa canisters atop a step ladder at a height of approximately 5 feet above the
floor during sampling by using sampling cane or wooden ladder.
• The Summa canisters will be submitted to a North Carolina certified laboratory for analyses of VOCs
by EPA Method TO-15. As indicated previously, North Carolina does not certify laboratories for
analyses of vapor samples. ECS will request that the laboratory analyze the vapor samples for the
most current and applicable standards from the NELAC Program.
• A summary of the proposed samples and analyses are provided in Table 1.

2.6 Quality Control/Quality Assurance Sampling

• In addition to the above samples, for Level II quality control/quality assurance (QA/QC) purposes one
indoor air and one sub-slab soil gas duplicate sample will be collected per day and submitted for VOCs
analysis by EPA Method TO-15. The duplicates will be collected in conjunction with the respective
record sample via a “tee” connection in the tubing. ECS will also collect a background outdoor air
sample in conjunction with the indoor air samples. Also, one duplicate soil sample will be collected
per day and submitted for the sample analyses as the record sample. Duplicate samples will be
submitted to the laboratory without identification as to their respective record samples.

• The soil 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. Additionally, it will be
requested that the method detection limits (MDL), and J-flags be included. The sampling activities will
be conducted in general accordance with Science and Ecosystem Support Division (SESD) guidelines.

2.7 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 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,
Brownfields Assessment Work Plan, Revision 1.0
Monroe Road Site
Brownfields Project ID: 25036-21-060
ECS Project No. 49:12929-C
February 1, 2022

7

followed by a hard copy or electronic copy provided on Disk or similar media) prior to implementation.
Amendments must have the approval of the NCDEQ Brownfields Program prior to implementation.

3.0 RECEPTOR SURVEY

A Brownfields Property receptor survey will be completed, summarized in the report, and included as an
attachment within the report. The Brownfields Property receptor survey includes descriptions of the
property and building characteristics, surrounding property land use, nearby utilities, water supplies,
surface water, and wetlands. A blank copy of the NCDEQ Brownfields Property Receptor Survey/Checklist
is included Appendix A.

4.0 INVESTIGATIVE DERIVED WASTE

Investigative derived waste (IDW) generated from the soil borings (i.e., soil cuttings) will be thinly spread
onsite in the vicinity of the boring location to the extent possible, unless impacted soil is apparent based
on field observations (i.e., visual and/or olfactory senses or elevated PID/FID readings). If soil cuttings
appear to be impacted or sufficient space to thinly spread the cuttings is not available, the soil cuttings
will be containerized. If soil cuttings are containerized, additional waste characterization will be proposed
and detailed in a separate work plan.

IDW generated from the construction, development, and sampling of monitoring wells (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 October 2015). IDW will be placed onsite in
the vicinity of the monitoring well location, unless impacts are apparent based on field observations (i.e.,
visual and/or olfactory senses or elevated PID/FID readings), in which case these materials will be
containerized. If these materials are containerized, additional waste characterization will be proposed
and detailed in a separate work plan.

5.0 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, boring logs, and data tables. The soil samples results will be
compared to the current NCDEQ Residential PSRGs. The sub-slab soil gas sample results will be compared
to the current NCDEQ, IHSB, Residential and Non-Residential Vapor Intrusion Screening Levels (VISLs) for
Sub-slab and Exterior Soil Gas. The indoor air sample results will be compared to the current NCDEQ,
IHSB, Residential and Non-Residential VISLs for Indoor Air. The indoor air samples results and sub-slab
soil gas sample results will also be input into the NCDEQ Risk Calculator to assess if the results exceed
applicable risk thresholds. Sample collection logs will be included in the report. The sample collection
logs will include helium leak checks results, site specific Safety Data Sheets if necessary, and photographs
of the sample arrays. The report will be signed and sealed by a North Carolina Professional Engineer or
Licensed Geologist. The report will also include ECS’s corporate Professional Engineers and Geologists
Licenses.

The Brownfields Property receptor survey will be completed and summarized in the report. The NCDEQ
Brownfields Assessment Work Plan, Revision 1.0
Monroe Road Site
Brownfields Project ID: 25036-21-060
ECS Project No. 49:12929-C
February 1, 2022

8

Brownfields Property Receptor Survey/Checklist will be included as an attachment to the report.

FIGURES
FIGURE 1
USGS TOPOGRAPHIC MAP
MONROE ROAD SITE
4000 and 4010 MONROE ROAD
CHARLOTTE, NORTH CAROLINA
ECS PROJECT NO. 49:12929-B
SOURCE:
USGS 7.5’ TOPOGRAPHIC MAP
CHARLOTTE WEST, NC
2019
SCALE:
AS SHOWN
SITE
LOCATION
FIGURE 2
PREVIOUS GROUNDWATER SAMPLE LOCATIONS
MAP
MONROE ROAD SITE
4000 and 4010 MONROE ROAD
CHARLOTTE, NORTH CAROLINA
ECS PROPOSAL NO. 49:28913P
SOURCE:
CHARLOTTE MECKLENBURG POLARIS GIS
WEBSITE ACCESSED JANUARY 19, 2021
SCALE:
AS SHOWN
APPROXIMATE SITE BOUNDARY
LEGEND
APPROXIMATE PREVIOUS GROUNDWATER SAMPLE LOCATION
Building 6
Former Gasoline
Station and Three 550-
gallon USTs removed
Approximate
location of two
10,000-gallon and
1,000-gallon former
USTs GW-1
GW-2
GW-3 GW-4 GW-5
GW-6
GW-16
GW-17
GW-8
GW-7
GW-9
GW-10
GW-11 GW-15
GW-14
GW-13
GW-12
FIGURE 3
PREVIOUS SUB-SLAB SAMPLE LOCATIONS MAP
MONROE ROAD SITE
4000 and 4010 MONROE ROAD
CHARLOTTE, NORTH CAROLINA
ECS PROPOSAL NO. 49:28913P
SOURCE:
CHARLOTTE MECKLENBURG POLARIS GIS
WEBSITE ACCESSED JANUARY 19, 2021
SCALE:
AS SHOWN
APPROXIMATE SITE BOUNDARY
APPROXIMATE PREVIOUS SUB-SLAB SAMPLE LOCATION
Building 6
Former Gasoline
Station and Three 550-
gallon USTs removed
Approximate
location of two
10,000-gallon and
1,000-gallon former
USTs
SG-K
SG-J
SG-I
SG-G
SG-F
SG-E
SG-H
SG-D
SG-B
SG-C
SG-A
LEGEND
FIGURE 4
PREVIOUS SOIL SAMPLE AND TEMPORARY
MONITORING WELL LOCATIONS MAP
MONROE ROAD SITE
4000 and 4010 MONROE ROAD
CHARLOTTE, NORTH CAROLINA
ECS PROPOSAL NO. 49:28913P
SOURCE:
CHARLOTTE MECKLENBURG POLARIS GIS
WEBSITE ACCESSED JANUARY 19, 2021
SCALE:
AS SHOWN
APPROXIMATE SITE BOUNDARY
APPROXIMATE SOIL SAMPLE LOCATION
APPROXIMATE TEMPORARY MONITORING WELL LOCATION
Building 6
Former Gasoline
Station and Three 550-
gallon USTs removed
Approximate
location of two
10,000-gallon and
1,000-gallon former
USTs
GW-2A/
SB-2A
GW-5A
GW-16A
GW-17A
GW-13A/
SB-13A
GW-18/
SB-18
LEGEND
B-1
B-2
B-3B-4
GW-1A/
SB-1A
FIGURE 5
PREVIOUS ADDITIONAL SUB-SLAB SAMPLE
LOCATIONS MAP
MONROE ROAD SITE
4000 and 4010 MONROE ROAD
CHARLOTTE, NORTH CAROLINA
ECS PROPOSAL NO. 49:28913P
SOURCE:
CHARLOTTE MECKLENBURG POLARIS GIS
WEBSITE ACCESSED JANUARY 19, 2021
SCALE:
AS SHOWN
APPROXIMATE SITE BOUNDARY
SG-H
SG-C
SG-A
APPROXIMATE SELECT PREVIOUS SUB-SLAB SAMPLE LOCATION (COLLECTED MARCH 2 –4, 2021)
APPROXIMATE CURRENT SUB-SLAB SAMPLE LOCATION (COLLECTED MAY 11, 2021)
LEGEND
SG-G
SG-M
SG-Q
SG-P
SG-O
SG-L
SG-N
FIGURE 6
PROPOSED SAMPLE LOCATIONS MAP
MONROE ROAD SITE
4000 and 4010 MONROE ROAD
CHARLOTTE, NORTH CAROLINA
ECS PROPOSAL NO. 49:28913P
SOURCE:
CHARLOTTE MECKLENBURG POLARIS GIS
WEBSITE ACCESSED JANUARY 19, 2021
SCALE:
AS SHOWN
APPROXIMATE SITE BOUNDARY
SG-C
APPROXIMATE PROPOSED INDOOR AIR & SUB-SLAB SAMPLES LOCATION
APPROXIMATE PROPOSED SOIL SAMPLE LOCATION
LEGEND
SB-1
SB-2
SB-3
SS-1/
IA-1
SS-2/
IA-2
SS-3/
IA-3SS-4/
IA-4
SS-5/
IA-5
SS-6/
IA-6
SS-7/
IA-7
TABLE 1
PROPOSED SAMPLES & ANALYSIS
Monroe Road Site
4000 and 4010 Monroe Road
Charlotte, Mecklenburg County, North Carolina
ECS Project No.: 49:12929-C
NCDEQ Brownfields Project No.:25036-21-060
Sample ID Laboratory Analysis / Analytical Method Batch / Individual Certified
Summa Canister
Soil Samples
SB-1 NA
SB-2 NA
SB-3 NA
SB-DUP NA
Sub Slab Soil Gas Samples
SS-1 Batch
SS-2 Batch
SS-3 Batch
SS-4 Batch
SS-5 Batch
SS-6 Batch
SS-7 Batch
SS-DUP Batch
Indoor Air Samples
IA-1 Individual
IA-2 Individual
IA-3 Individual
IA-4 Individual
IA-5 Individual
IA-6 Individual
IA-7 Individual
IA-DUP Individual
Ambient Air Sample Individual
Notes:
VOCs = Volatile Organic Compounds
SVOCs - Semi-Volatile Organic Compounds
Chromium VI = Hexavalent Chromium
DUP = Duplicate Sample
VOCs / EPA Method 8260
SVOCs / EPA Method 8270
RCRA Metals / EPA Method 6010
Chromium VI / EPA Method 7199
VOCs / TO-15
VOCs / TO-15
North Carolina Department of Environmental Quality
Division of Waste Management
Brownfields Program
Site:
Address:
City:
County:
Brownfields Project Number:
Property and Building Characteristics
a. Provide occupancy and use information.
c. Describe the foundation construction. Include details on type, floor construction, and depth below grade.
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.
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.
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).
% of property that is covered by buildings
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).
Current Usage Proposed UsageSurface Conditions
% of property that is grassed areas
% of property that is agricultural crops
% of property that is paved
NASize of Property (acres)
% of property that is wooded/brush
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?).
Rev. 09/2015 Page 1 of 3
North Carolina Department of Environmental Quality
Division of Waste Management
Brownfields Program
Surrounding Property Land Use
Utilities
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.
Is there a basement within 1,000 ft of the Property?
Is there a residence within 1,000 ft of the Property?
Utility/Potential Receptor
Is a buried electrical cable main within 100 ft of Property boundary?
Is a storm water pipe within 100 ft of the Property boundary?
Is a sanitary sewer within 100 ft of the Property boundary?
* If yes, please provide a map or detailed information (distance, direction, depth) of the utility in correlation with
the subject property.
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 septic system leach field within 500 ft of the Property boundary?
Direction
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.
Y/N *
Is a school or daycare center within 1,000 ft of the Property?
Specific Land Uses of Interest Y/N *
* If numerous facilities of interest are present, their locations can be placed on a map in lieu of providing specific
addresses.
Distance
(ft)
DirectionDistance
(ft)Address
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 Proposed Usage Current Use/Occupant
Rev. 09/2015 Page 2 of 3
North Carolina Department of Environmental Quality
Division of Waste Management
Brownfields Program
Water Supply
What is the potable water supply for the property? Public _______ Private ______
Surface Water & Wetlands
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?
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
b d?Is an irrigation well within 1,500 ft of the Property boundary?
Response/Comments
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.
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.
The purpose of this section is to provide information on the water supply for the site and surrounding areas.
a. Is the water body naturally developed or
man-made?
Y/NWater Supply Wells
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.
Are there surface water features on the
property? (If yes, please complete a. to d.)
Provide Information regarding Surface Water
and Wetlands
Distance
(ft)Direction Address
Rev. 09/2015 Page 3 of 3