24029_649 Crowell_WP-DEQ Approval 20200702

Roy COOPER
Governor
MICHAEL S. REGAN
Secretary
MICHAEL SCOTT
Director
Sent Via E-Mail
Mr. Terry Kennedy
Resolve Environmental Services, PLLC
500 Devonport Drive
Matthews, NC 28104
tdk(a&geologicalresourcesinc.com
NORTH CAROLINA
Environmental Quality
July 2, 2020
Subject: Brownfields Work Plan Approval
649 W Crowell Street
Monroe, Union County
Brownfields Project Number 24029-20-090
Dear Mr. Kennedy,
The Department of Environmental Quality (DEQ) Brownfields Program received the Sampling
Plan dated July 2, 2020 for the above referenced Brownfields Property. DEQ Brownfields
reviewed this document and approves the work plan.
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 questions about this correspondence or require additional
information, please feel free to contact me by phone at 704/661-0330 or by email at
carolyn.minnich(a),ncdenr. gov
Sincerely,
coi— —4-
Carolyn Mininch
Brownfields Project Manager
ec: Paterson, Fern A. fernpaterson&parkerpoe.com
Scott Ball wsb(d),,geologicalresourcesinc.com
Laura Minor resolve&carolina.rr.com
Brian Borne bborne(cmonroenc.org
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Ems�onmenlal0ual�
North Carolina Department of Environmental Quality I Division of Waste Management
217 West ones Street 1 1646 Mail Service Center I Raleigh, North Carolina 27699-1646
919,707,8200

Sampling Plan
694 W. Crowell Street
Union County Parcel ID Number 09232258
Monroe, North Carolina
Brownfields Project Number: 24029-20-090
Prepared for:
Ms. Carolyn Minnich
Project Manager
Brownfields Program
North Carolina Department of Environmental Quality
610 East Center Avenue, Suite 301
Mooresville, North Carolina 28115
Prepared by:
Resolve Environmental Services, PLLC
500 Devonport Drive
Matthews, North Carolina 28104
July4"t
2, 2020
\-17
Terry D. Kennedy, P.G.
License #1435
Resolve Environmental Services, PLLC, is licensed to practice geology in North Carolina. The certification
number of the corporation is C-416.

TABLE OF CONTENTS
A. SITE INFORMATION..................................................................................................... 1
B. INTRODUCTION............................................................................................................. 2
C. SCOPE OF WORK.......................................................................................................... 3
D. SAMPLING METHODOLGY............................................................................................ 4
E LABORATORY ANALYSES............................................................................................ 5
F. QUALITY ASSURANCE/QUALITY CONTROL................................................................ 5
G. INVESTIGATIVE DERIVED WASTE MANAGMENT....................................................... 6
H. REPORTING...................................................................................................................6
FIGURES
Figure 1: Site Location Map
Figure 2: Proposed Sampling Locations
TABLES
Table 1: Summary of Ground Water Analytical Results
Table 2: Summary of Proposed Soil and Ground Water Analyses

A. SITE INFORMATION
• Site Name:
• Location:
Land Use:
Property Owner:
Prospective Developer:
694 W. Crowell Street
694 W. Crowell Street
Monroe, Union County, NC
Former Commercial
Parcel 09232258
City of Monroe
P.O. Box 69
Monroe, North Carolina 28111
City of Monroe
P.O. Box 69
Monroe, North Carolina 28111
Consultant: Resolve Environmental Services, PLLC (Resolve)
500 Devonport Drive
Matthews, North Carolina 28104
[phone]
Latitude: 34.9842900 North
Longitude:-80.5557480 West
I

B. INTRODUCTION
The subject site consists of a 2.97-acre tract identified as Union County Parcel ID 09232558. The
site is located at 694 W. Crowell Street in Monroe, Union County, North Carolina (Figure 1).
Resolve Environmental Services, PLLC (Resolve) conducted a Phase I Environmental Site
Assessment (ESA) at the site in December 2019/January 2020. Based upon the historical
information obtained and reviewed, the subject site was developed as residential from at least
1934 to 1984. In 1984, the subject site was developed into a commercial property. The onsite
structure burned to the ground in 2017. Today, the slab and structural steel frame remain on the
site. From prior to 1914 to at least 1984, properties immediately surrounding the subject site have
been undeveloped and/or residential. Commercial development of the areas to the north, east
and south of the subject site started in 1984 and the early 1990's. Portions of the former industrial
Scott Aviation facility (Brownfields Project ID 09042-05-90) begin to appear in 1984. Scott
Aviation buildings were demolished beginning in 2013.
One (1) 1,000-gallon AST marked "Waste Oil" was noted on the concrete slab where the former
on -site structure was located. The concrete slab where the AST was staged and the soil at the
edge of the concrete slab were noted to exhibit heavy oil staining. This was considered a REC.
In addition, the adjacent Scott Aviation site was considered a potential environmental condition
(PEC) to the subject site due to the documented soil and ground water contamination at the
property. Based on this, a Phase II ESA was conducted at the site in January/February 2020.
A total of five (5) temporary ground water monitoring wells (TMW-1, TMW-2, TMW-3, TMW-5 and
TMW-6) were installed across the property. Ground water samples were collected for laboratory
analysis of volatile organic compounds (VOCs) and for RCRA metals. In addition, a background
temporary monitoring well (TMW-Background) was installed in a location, distant from any known
REC, and sampled for RCRA metals to determine the background concentration levels of
naturally occurring metals in the ground water at the site.
A concentration of tetrachloroethylene that exceeded the NCDEQ maximum allowable
concentration (MAC) was reported in one ground water sample (TMW-5) collected at the site.
The concentration did not exceed the NCDEQ's Gross Contamination Level (GCL).
Tetrachloroethylene was not inferred to be associated with any activity at the site. A summary of
the ground water analytical results from the Phase II ESA are provided in Table 1.
Three (3) soil samples were collected from the area of the soil staining adjacent to the AST, prior
and subsequent to soil removal. The soil samples were screened for TPH-GRO/DRO using UVF
technology. Please note that the AST was removed by the property owner prior to Phase II soil
excavation and sampling activities.
Based upon the laboratory results from the soil sampling, petroleum -affected soils were removed
from the site by Resolve personnel. Concentrations of TPH-GRO and/or TPH-DRO that
exceeded the North Carolina Department of Environmental Quality's (NCDEQ) Regulatory Action
Levels (RALs) were reported in the initial soil samples collected during excavation activities on
K,

February 12, 2020. Following additional excavation, the concentrations of TPH-GRO and TPH-
DRO (if detected) did not exceed the RALs.
On June 22, 2020, a review of the site history and upcoming requirements were discussed via a
telephone conversation between NCDEQ, Parker Poe, City of Monroe and Resolve personnel.
Additional soil and ground water assessment was recommended at the site in order to close the
data gaps at the site.
C. SCOPE OF WORK
The following work scope is based upon the requirements outlined in the aforementioned
telephone call held on June 22, 2020. A Site -Specific Health and Safety Plan will be prepared by
Resolve in accordance with 29 CFR 1910.120 (HAZWOPER). All on -site Resolve personnel will
be current with HAZWOPER training. The Health and Safety Plan will be present on site during
all field activities. The scope of work for the additional assessment is detailed below.
1. Resolve will supervise the installation of three (3) shallow North Carolina Type II
monitoring wells at the site. A monitoring well will be installed in the former location of the
waste oil AST and in the vicinity of the former location of temporary well TMW-5 and the
third well in a location to triangulate ground water flow direction across the site. The three
(3) shallow Type II monitoring wells will be completed to depths immediately below the
first water bearing fracture encountered in the underlying meta-argillite. Resolve estimates
that these wells will each be completed to a total depth of 40 feet below grade surface
(BGS). The wells will be screened to bracket the water bearing fracture(s). The monitoring
wells will be installed by a North Carolina licensed well driller using auger and/or air drilling
techniques. The wells will be installed and developed in accordance with the North
Carolina well drilling standards specified in NCAC T15A 2C and the US EPA Region 4
Science and Ecosystem Support Division Guidance. Well development will be conducted
by removing a minimum of 5 well volumes. Well development will be considered complete
when the water column in the well is free of visible sediment, and measurements of
temperature, pH, specific conductivity and turbidity have stabilized. The top of casing
elevations of the monitoring wells will be measured subsequent to installation.
2. Collect ground water samples from each of the newly installed monitoring wells using low
flow sampling techniques (e.g. variable speed pump, peristaltic pump) to reduce sample
turbidity. The three (3) collected ground water samples will be submitted to a NC certified
laboratory for analyses for volatile organic compounds (VOCs) by SW-846 Method 8260,
for semi -volatile compounds by SW-846 Method 8270 and for 8 RCRA Metals by EPA
Method 6020.
3. Resolve will advance ten (10) soil borings, each to a depth of two (2) feet BGS, in a 5-grid
pattern across the site. Two (2) samples will be collected in each grid. Each individual
grid sample will be screened with an OVA. The sample in each grid with the highest OVA
reading will be analyzed for VOCs by SW-846 Method 8260. The two (2) samples from
each grid will be composited in the field. A total of 5 composite samples will be collected
and analyzed for SVOCs by SW-846 Method 8260 and RCRA Metals by EPA Method
6020. One aliquot from each collected soil sample will be submitted for laboratory hold
and possible analysis of hexavalent chromium by EPA Method 7199 depending on the

chromium concentration results from the RCRA Metals analysis. Proposed sampling
locations are presented in Figure 2.
4. In addition to the ten (10) soil borings in the 5-grid pattern, Resolve will collect three (3)
soil samples during the installation of the three (3) monitoring wells. The samples will be
screened with an organic vapor analyzer (OVA) at 5' intervals during borehole
advancement. The sample with the highest OVA reading will be submitted for analyses
for VOCs by SW-846 Methods 8260, for SVOCs by SW-846 Method 8270 and for RCRA
Metals by EPA Method 6020.
5. A receptor survey, covering a 1,500-foot radius from the property boundary of the subject
site (unless otherwise indicated by the NCDEQ Brownfields project manager), will be
conducted, noting property use(s), proposed use(s), construction details of onsite
structures, surrounding property land use, onsite utilities, nearby water supply information
and surface water and wetlands information, etc. A Brownfields Property Receptor Survey
form will be completed and included in the final report.
D. SAMPLING METHODOLGY
Samples will be collected and analyzed in accordance with the NCDEQ, Division of Waste
Management, Inactive Hazardous Sites Program "Guidelines for Assessment and Cleanup"
(October 2015/revised January 2020) and the US EPA Region 4 Science and Ecosystem Support
Division Guidance.
Soil Sampling: Soil borings will each be initially advanced to a total depth of 2 feet BGS using a
hand auger. A soil sample will be collected from the 0-2 feet interval in each boring. Soil samples
collected during from the monitoring well installation will be screened at five (5) foot intervals.
Soils will be screened using a photoionization detector (PID). If suspected impacts are observed
at or near the boring terminus (visual, olfactory, or PID), samples will also be collected from
deeper intervals as warranted up to a maximum depth of 5 feet BGS. The aliquot of soil retained
for laboratory analyses will not be the same one used for field screening.
Ground Water Sampling: Subsequent to well development, the newly installed monitoring wells
at the site will be gauged, purged and sampled using low flow sampling techniques with the
appropriate type of pump for the depth to water in each well (e.g. peristatic, variable speed). The
appropriate pump with new tubing will be used to purge and sample each of the site wells. Field
parameters (dissolved oxygen, pH, conductivity, temperature and turbidity) will be measured and
once readings become stable, a ground water sample will be collected. Stabilization will be
defined as three consecutive readings where temperature is within ± 10%, pH is within ± 0.1 SU,
and conductivity is ± 5%. Although not a requirement, efforts will be made to achieve
measurements of <10 NTU turbidity prior to collecting samples. If readings do not stabilize in the
monitoring wells, the wells will be redeveloped prior to re -purging and sampling.
4

E. LABORATORY ANALYSES
All samples will be collected and immediately placed into laboratory -supplied glassware, placed
on ice and transported to a North Carolina certified laboratory for analyses. The laboratory will
conduct the analyses using Level II QA/QC with method detection limits at or below the applicable
NCDEQ reporting requirements. Estimated values (i.e. J Flags) will be included in the laboratory
analytical report. A table summarizing the proposed sampling locations and associated analyses
is included as Table 2.
1. Soil samples will be analyzed for VOCs by SW-846 Method 8260, SVOCs by SW-846
Method 8270 and RCRA Metals by EPA Method 6010. In addition, one aliquot from each
collected soil sample will be submitted for laboratory hold and possible analyses of
hexavalent chromium by EPA Method 7199 depending on chromium concentration results
from the RCRA Metals analysis.
2. Collected ground water samples will be analyzed for VOCs by SW-846 Method 8260, for
SVOCs by SW-846 Method 8270 and for 8 RCRA Metals by EPA Method 6020.
3. Duplicates and Trip Blanks
One (1) duplicate sample from each of the soil and ground water samples will be analyzed
for VOCs by SW-846 Method 8260, for SVOCs by SW-846 Method 8270 and for 8 RCRA
Metals by EPA Method 6020. One trip blank will be analyzed for VOCs by SW-846 Method
8260.
F. QUALITY ASSURANCE/QUALITY CONTROL
1. Soil Boring and Monitoring Well Installation
All down -hole drilling equipment will be pressure washed, scrubbed and rinsed prior to
use and between each soil boring/monitoring well installation location.
2. Monitoring Well Sampling
Monitoring wells will be developed using submersible pumps to ensure removal of all
introduced drilling fluids. Monitoring wells will be purged using low flow techniques prior
to sample collection. New nitrile gloves will be worn by field personnel during sampling
activities and changed between sample locations. All field meters will be properly
calibrated daily and as needed, will be decontaminated prior to use and between sampling
locations. Collected samples will be placed directly into laboratory -supplied sample
containers and immediately placed on ice in a sample cooler. The samples will be shipped
in sealed coolers to the laboratory. Proper chain of custody procedures will be maintained
at all times. To evaluate laboratory quality control and repeatability, one duplicate ground
water sample will be collected and analyzed for VOCs, SVOCs and RCRA metals during
each sampling event and one trip blank sample (for VOCs) will accompany the samples
during each sampling event.
k,

3. Soil Sampling
Soil samples will be collected using a decontaminated hand auger or drill rig tooling. All
field meters will be properly calibrated daily and as needed, will be decontaminated prior
to use and between sampling locations. Field personnel will collect each soil sample using
a new pair of nitrile gloves. The samples will be placed directly into laboratory -supplied
sample containers, immediately placed on ice in a sample cooler and transported to the
laboratory in the manner described above. Proper chain of custody procedures will be
maintained at all times. To evaluate laboratory quality control and repeatability, one
duplicate soil sample will be collected and analyzed for VOCs, SVOCs and RCRA metals.
One (1) trip blank sample will accompany the samples during the sampling event.
4. Duplicates and Trip Blanks
All sampling will follow appropriate quality assurance protocols that will include ground
water and soil duplicate samples. One (1) trip blank will also be included in the sampling.
G. INVESTIGATIVE DERIVED WASTE (IDW) MANAGEMENT
Soil cuttings from the installation of soil borings and monitoring wells will be containerized.
Resolve will rely on sample analysis results of the collected soil and ground water samples to
determine whether the IDW requires disposal at a permitted facility or alternatively, can be spread
onsite.
Monitoring well development and purge water, as well as equipment decontamination water, will
also be containerized. Resolve will rely on sample analysis results of the collected ground water
samples to determine whether the development and purge water requires disposal at a permitted
facility or alternatively, can be spread onsite. Discharged water (if spread onsite) will not be
allowed to enter the creek or run off -site. The final disposal information will be made available in
the report.
H. REPORTING
All of the results and field data from the assessment activities will be summarized and presented
in an Assessment Report that will include all applicable field data, laboratory analytical results
(including J-flagged or estimated concentrations), tables, figures, conclusions and
recommendations for the site, and will be certified by signature and seal of Professional Geologist
duly licensed in North Carolina.

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TABLE 1
SUMMARY OF GROUND WATER SAMPLE ANALYTICAL RESULTS
694 W. CROWELL STREET
MONROE, NORTH CAROLINA
Date: 2/10/2020
Analytical Method
SW846 8260D
SW846 6010D
SW846 7470A
a�
Contaminant of Concern
E
cue
^O
a
>
s.
Date
U
Well ID
Collected
U
(mm/dd/yy)
[=
2L Standard (µg/1)
0.7
10
700
2
10
15
20
20
1.0
GCL (µg/l)
700
--
--
--
--
--
--
--
--
TMW-1
01/29/20
<0.22
<10
<200
<5.0
<10
<5.0
<10
<10
<0.50
TMW-2
01/30/20
<0.22
<10
<200
<5.0
<10
<5.0
<10
<10
<0.50
TMW-3
01/30/20
<0.22
<10
<200
<5.0
<10
<5.0
<10
<10
<0.50
TMW-BACKGROUND
01/30/20
NR
<10
1 <200
<5.0
<10
<5.0
<10
<10
<0.50
TMW-5
01/30/20
1.8
<10
<200
<5.0
<10
<5.0
<10
<10
<0.50
TMW-6
61/29/20
<0.22
<10
<200
<5.0
<10
<5.0
<10
<10
<0.50
Notes:
• Results reported in micrograms per liter (µg/1).
• < : Less than the method detection limit specified in the laboratory report.
• 2L Standard specified in T15A NCAC 2L.0202.
• GCL: Gross contamination level.
• Concentrations in bold face type exceeded the 2L Standard.
Page 1 of 1

TABLE 2
SUMMARY OF PROPOSED SOIL AND GROUND WATER ANALYSES
694 W. CROWELL STREET
BROWNFIELDS PROJECT: 24029-20-090
Sample ID
Objective
Depth
(feet)
VOCs 8260
SVOCs 8270
RCRA Metals
6020
Hexavalent
Chrome 7199
SB-1
Soil Quality
2
X
SB-2
Soil Quality
2
X
SB-3
Soil Quality
2
X
SB-4
Soil Quality
2
X
SB-5
Soil Quality
2
X
Comp-1
Soil Quality
---
X
X
Potential
Comp-2
Soil Quality
---
X
X
Potential
Comp-3
Soil Quality
---
X
X
Potential
Comp-4
Soil Quality
---
X
X
Potential
Comp-5
Soil Quality
---
X
X
Potential
MW-1 (depth in feet)
Soil Quality (during boring advancement)
TBD
X
X
X
Potential
MW-2 (depth in feet)
Soil Quality (during boring advancement)
TBD
X
X
X
Potential
MW-3 (depth in feet)
Soil Quality (during boring advancement)
TBD
X
X
X
Potential
SB-Duplicate
Soil Duplicate
2
X
X
X
MW-1
Surficial Aquifer (adjacent to BF site)
---
X
X
X
MW-2
Surficial Aquifer (background)
---
X
X
X
MW-3
Surficial Aquifer (vicinity of former AST)
---
X
X
X
MW-Duplicate
Ground Water Duplicate
---
X
X
X
Trip Blank
---
X
Notes:
1. TDB: To be determined; sample exhibiting highest OVA reading during boring advancement will be submitted for analyses.
2. Composite soil samples (Comp-1, Comp-2, etc.) to be comprised of two (2) soil samples, collected from each of the five (5) grids (see Figure 2).
3. The soil sample from each grid that exhibits the highest OVA reading in the field will be submitted for analysis of VOCs (i.e. SB-1, SB-2... SB-5).