22074 Gathing Motor Soil Char WP-DEQ approval 20190307

March 7, 2019

Sent Via E-Mail
Robert C. Foster Wood Environmental & Infrastructure Solutions, Inc. 2801 Yorkmont Road, Suite 100
Charlotte, North Carolina 28208
[e-mail]

Subject: Brownfields Work Plan Approval-Soil Characterization Former Gathings Motors Brownfields Property
Charlotte, Mecklenburg County
Brownfields Project No. 22074-18-060
Dear Mr. Foster,
The Department of Environmental Quality (DEQ) Brownfields Program received the Revise
Work Plan for Soil Characterization for Beneficial Reuse dated March 7, 2019 for the
above referenced Brownfields Property. DEQ Brownfields reviewed this document and determined that comments made by DEQ Brownfields to the previous versions of this work plan have been incorporated as requested. Therefore, DEQ Brownfields 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
[e-mail]

Sincerely, Carolyn Minnich
Carolyn Mininch
Brownfields Project Manager
ec: Fish, Jason [e-mail]
Franchina, David A. [e-mail]
Wood Environment & Infrastructure Solutions, Inc.
2801 Yorkmont Road, Suite 100
Charlotte, North Carolina 28208
Licensures: NC Engineering F-1253, Geology C-247
T: 704-357-8600
www.woodplc.com
‘Wood’ is a trading name for John Wood Group PLC and its subsidiaries
March 7, 2019
Ms. Carolyn Minnich, Brownfields Project Manager
North Carolina Department of Environmental Quality
Division of Waste Management
Brownfields Program
1646 Mail Service Center
Raleigh, North Carolina 27699-1646
Subject:Revised Work Plan for Soil Characterization for Beneficial Reuse
Former Gathings Motor Company
1100 and 1200 South Tryon Street
Charlotte, North Carolina
Brownfields Project Number 22074-18-060
Wood Project No: 6228-18-0495
Dear Ms. Minnich:
Wood Environment & Infrastructure Solutions, Inc. (Wood) is pleased to submit this revised
Work Plan outlining activities proposed for the above-referenced site. Included in this revised
Work Plan is an outline of our understanding of the project information, our proposed scope of
services and schedule.
PROJECT INFORMATION
On behalf of Tryon Investors, LLC Wood is presently performing Brownfields Assessment work at
the subject properties consisting of four parcels encompassing approximately 4.9 acres situated
at the intersection of South Tryon Street and West Carson Boulevard (Figure 1).
The Prospective Developer (PD) recently provided a soil cut/fill analysis that showed up to
14,000 cubic yards (yds3) that will be excavated from the property and will likely require export
to an off-site location. This total includes approximately 6,600 yds3 of grade elevation “cut” and
Work Plan for Soil Characterization March 7, 2019WoodProject: 6228-18-0495
2
approximately 7,300 yds3 anticipated to be generated during foundation construction (drilling of
piers). This volume does not include approximately 4,500 cy of “strippings”anticipated to consist
primarily of pavement, (i.e. non-soil). To evaluate potential soil export options, it will be
necessary to perform characterization of the soil that will likely need to be exported off-site.
According to the cut/fill analysis (Figure 2)provided to Wood, the reduction of the grade
elevation will range from 0.5 to about 5 feet across the site.This work plan was developed to
provide a scope of work relative to the assessment of the mass grading planned for the subject
properties. The strategy for characterization of the soil to be generated during foundation
construction will be detailed in the Environmental Management Plan (EMP).The proposed
assessment activities will be performed in general accordance with the most recent Inactive
Hazardous Sites Branch (IHSB) Program Guidelines for Assessment and Cleanup
(http://portal.ncdenr.org/web/wm/sf/ihs/ihsguide), dated October 2015 and the most recent
versions of the U.S. Environmental Protection Agency (EPA) Region IV Science and Ecosystem
Support Division (SESD) Field Branches Quality System and Technical Procedures guidance.
PROPOSED SCOPE OF WORK
Task 1 –Beneficial Reuse Soil Characterization
Wood proposes to advance 80 shallow soil borings at locations throughout the site (see
attached Figures 1 and 2)to assess the area to be affected during mass grading.The 80
borings are “grouped” into 10 sample “block” areas as shown on the figures.The soil
assessment/characterization effort is planned to evaluate the depth horizon beginning at the
existing grade and extending to five feet or less below the existing grade for the presence of
contaminants.The purpose of the soil characterization is to evaluate if concentrations of
contaminants are identified in the soil to be exported that exceed the Inactive Hazardous Sites
Branch (IHSB) Preliminary Soil Remediation Goals (PSRGs) for Residential or Protection of
Groundwater (PoG).The boring layout shown on the figures is based on a 30 x 30 foot grid
pattern.The boring locations approved by the BFP will be marked in the field and recorded on a
hand-held GPS unit for future reference.
Prior to conducting the soil assessment activities,Wood will contact the North Carolina811
underground utility location service and a private underground utility locator to perform
Ground-Penetrating Radar (GPR) and Electromagnetic (EM) surveys to attempt to detect metallic
Work Plan for Soil Characterization March 7, 2019WoodProject: 6228-18-0495
3
objects such as pipes, tanks or underground utility lines. The purpose of this effort is to
minimize the potential for probing into underground utilities buried at the property.
Wood’s direct-push subcontractor will advance the soil borings to a depth of five feet below
existing grade using a direct-push rig (see attached Table).Wood plans to refer to the cut/fill
analysis to collect the soil cores at each boring location from the depth range shown on the
cut/fill analysis (see Table). Soil cores will be removed from the disposable PVC liners, and visual
and olfactory observations relative to the soil samples will be recorded by our field personnel.
The soil types encountered in the borings will be recorded to prepare soil boring logs.
To select “discrete”samples that will be retained for analysis of Volatile Organic Compounds
(VOCs),Wood will split the soil core longitudinally. A representative portion of one-half of the
sample will be placed directly in VOC sample containers and a representative portion of the
remaining half will be placed in a re-sealable plastic bag to be screened in the field using an
Organic Vapor Analyzer (OVA) equipped with either a photoionization detector (PID) or flame
ionization detector (FID). The results of the field screening will be recorded by field personnel.
Based on the results of the field screening, one “discrete”sample per block area will be selected
for laboratory analysis for VOCs using EPA Method 8260B.
Regarding the samples to be retained for analysis of Semi-volatile Organic Compounds (SVOCs)
and total metals,representative portions of the soil cores collected from the appropriate depth
interval will be placed in re-sealable plastic bags and screened in the field with an OVA. The
results of the field screening will be recorded by field personnel. The soil samples will be
removed from the resealable plastic bags and be placed in laboratory sample containers.These
“discrete” samples will be combined in the laboratory by laboratory personnel as a
“composite” sample as shown on the attached Table. Each “composite” soil sample will be
placed into laboratory-provided containers for analysis of SVOCs by EPA Method 8270, and
Resource Conservation and Recovery Act (RCRA) Metals (total) by EPA Method 6020/7471.The
two soil samples exhibiting the highest total chromium concentrations will be additionally
analyzed for Hexavalent Chromium (by Method 7199)to speciate the identified chromium as
either trivalent or hexavalent.The analyzing laboratory will include “j-flag” values or estimated
concentrations in their laboratory reports.
The soil samples will be placed in a cooler with ice and shipped to Con-Test Analytical
Laboratory (Con-Test)in East Longmeadow, Massachusetts. Soil samples will be maintained
Work Plan for Soil Characterization March 7, 2019WoodProject: 6228-18-0495
4
under a chain-of-custody protocol. One soil field duplicate QA/QC sample will be collected for
each day of field work for analysis of VOCs, SVOCs and metals.One trip blank for VOC analysis is
proposed.Wood proposes that one soil sample be additionally retained for analysis by the
Toxicity Characteristic Leaching Procedure (TCLP) for volatile and semi-volatile organics and the
8 RCRA metals.This sample will be held by the laboratory pending completion of the “totals”
analysis.The purpose of this TCLP analysis is to demonstrate the leaching potential for analytes
that may be identified at concentrations that exceed the IHSB,PSRGs for PoG.Following receipt
and review of the total organics and metals data,Wood will select one sample that contains the
highest concentrations for TCLP analysis.Following the completion of the soil sampling
activities, the borings will be backfilled with the soil cores and/or bentonite to the ground
surface.
Task 2 –Prepare Beneficial Reuse Assessment Report
Wood will prepare a Beneficial Reuse Soil Assessment report summarizing the field activities,
results, and conclusions for Tryon Investors, LLC and NCDEQ to review. A site map and
subsurface profile drawings will be provided with the report. The purpose of the report will be to
provide data in a manner that will allow Tryon Investors, LLC, and grading contractor to evaluate
the location and depth of “non-contaminated” soil that may be suitable for beneficial reuse
elsewhere.The report will include a comparison of the results to the IHSB, PSRGs and a graphical
presentation of the analytical data on site drawings to illustrate which “grid squares” and depth
horizons include “non-contaminated” soil.Soil analytical results will be considered
representative of the proposed “cut” depth horizon, “grid square” or “sample block area” which
they are located within.At the request of Tryon Investors, LLC. The report will be submitted to
the NCDEQ BFP and Solid Waste Section for review and approval.
Work Plan for Soil Characterization March 7, 2019WoodProject: 6228-18-0495
6
TABLE
Block ID Boring ID
Average Boring
Depth (Feet)/SoilVolume Evaluated(cubic yards)
"Grab"Sample IDs
Sample
DepthIntervals(Feet, bgs)
Analytical Parametersfor "Grab" Samples "Composite" Sample IDs
Analytical
Parameters for"Composite"Samples
Total Number of samples
3
3-7
3-8
3-9
3-10
3-6 0-3.55 feet
3-7
3-8
3-9
3-10
3-2 3-2
3-3 3-3
3-4 3-4
0-3.5
0-3.5
0-3.5
0-3.5
2 5 feet 1 VOC Sample per Blockchosen based on feld
screenings with PID
2-CompA SVOCs and Metals
(1 Sample)
5 feet 1 VOC Sample per Blockchosen based on feld
screenings with PID
1-CompA SVOCs and Metals
(1 Sample)
0-2.5
0-2.5
0-2.5
0-2.5
0-2.5
1-3
2-7
2-6 0-2.5
0-2.5
2-8
2-9
2-10
0-2.5
0-2.5
1 VOC1 Composite SVOCs and
Metals
2-5 2-5
2-1
2-2
2-3
1-5
1-1
1-2
1-3
1-4
2-2
2-3
2-4 2-4
1-4
1-5
2-1
1 VOC1 Composite SVOCs and
Metals
2-10
2-6
2-9
2-8
2-7
Table
Soil Sampling Analysis Plan
Former Gathings Motor Company
Brownfields Project No.:22074-18-060
Wood Project No.: 6228-18-0495
Charlotte, North Carolina
1-10
1-9
1-8
1-7
1-6 1-6
1-7
1-8
1-9
1-10
1
0-3.5
0-3.5
0-3.5
0-3.5
0-3.5
0-3.5
0-3.5
0-3.5
0-3.5
0-3.5
1-1
1-2
0-2.5
3-1 3-1
3-5 3-5
0-3.5
0-3.5
0-3.5
0-3.5
0-3.5
3-6
1 VOC Sample per Block
chosen based on feldscreenings with PID 3-CompA SVOCs and Metals(1 Sample)
1 VOC
1 Composite SVOCs andMetals
Block ID Boring ID
Average Boring
Depth (Feet)/SoilVolume Evaluated(cubic yards)
"Grab"Sample IDs
Sample
DepthIntervals(Feet, bgs)
Analytical Parametersfor "Grab" Samples "Composite" Sample IDs
Analytical
Parameters for"Composite"Samples
Total Number of samples
5 feet 1 VOC Sample per Blockchosen based on feld
screenings with PID
1-CompA SVOCs and Metals
(1 Sample)
1 VOC1 Composite SVOCs and
Metals
1-1
Table
Soil Sampling Analysis Plan
Former Gathings Motor Company
Brownfields Project No.:22074-18-060
Wood Project No.: 6228-18-0495
Charlotte, North Carolina
1
0-3.51-1
6-6 6-6 0-2.5
6-7 6-7 0-2.5
6-8 6-8 0-2.5
6-9 6-9 0-2.5
6-10 6-10 0-2.5
6-5
6-CompA SVOCs and Metals(1 Sample)
1 VOC1 Composite SVOCs andMetals
6-2 6-2
6-3 6-3
6-4 6-4
1 VOC Sample per Blockchosen based on feldscreenings with PID
4-6 4-6
4-2 4-2
4-3 4-3
4-4
4
4-8
4-9
4-10
4-7
4-8
4-9
4-10
5 feet
4-1 4-1
4-4
4-5 4-5 1 VOC Sample per Blockchosen based on feld
screenings with PID
4-CompA SVOCs and Metals
(1 Sample)
1 VOC1 Composite SVOCs and
Metals
5-6 5-6
0-3.5
0-3.5
0-3.5
0-3.5
0-3.5
0-3.5
0-3.5
0-3.5
0-3.5
0-3.5
5-CompA SVOCs and Metals(1 Sample)
1 VOC
1 Composite SVOCs andMetals
4-7
1 VOC Sample per Block
chosen based on feldscreenings with PID
5-7
5-8
5-9
5-10
5-7
5-8
5-9
5-10
0-2.5
0-2.5
0-2.5
0-2.5
0-2.5
0-2.5
0-2.5
0-2.5
0-2.5
0-2.5
5-2 5-2
5-3 5-3
5-4
0-2.5
0-2.5
0-2.5
0-2.5
0-2.5
5 5 feet
6-5
6
6-1
5 feet
6-1
5-4
5-5
5-1 5-1
5-5
Block ID Boring ID
Average Boring
Depth (Feet)/SoilVolume Evaluated(cubic yards)
"Grab"Sample IDs
Sample
DepthIntervals(Feet, bgs)
Analytical Parametersfor "Grab" Samples "Composite" Sample IDs
Analytical
Parameters for"Composite"Samples
Total Number of samples
5 feet 1 VOC Sample per Blockchosen based on feld
screenings with PID
1-CompA SVOCs and Metals
(1 Sample)
1 VOC1 Composite SVOCs and
Metals
1-1
Table
Soil Sampling Analysis Plan
Former Gathings Motor Company
Brownfields Project No.:22074-18-060
Wood Project No.: 6228-18-0495
Charlotte, North Carolina
1
0-3.51-1
7-6 7-6 0-3.5
7-7 7-7 0-3.5
7-8 7-8 0-3.5
7-9 7-9 0-3.5
7-10 7-10 0-3.5
8-6 8-6 0-4.5
8-7 8-7 0-4.5
8-8 8-8 0-4.5
8-9 8-9 0-4.5
8-10 8-10 0-4.5
9-6 9-6 0-2.5
9
9-1
5 feet
9-1
1 VOC Sample per Blockchosen based on feld
screenings with PID
9-5
9-CompA SVOCs and Metals(1 Sample)
9-2 9-2
9-3 9-3
9-4 9-4
9-5
SVOCs and Metals(1 Sample)
1 VOC1 Composite SVOCs andMetals
8-2 8-2
8-3 8-3
8-4 8-4
8-5
0-2.5
0-2.5
0-2.5
0-2.5
0-2.5
1 VOC1 Composite SVOCs and
Metals
8
8-1
5 feet
8-1
1 VOC Sample per Blockchosen based on feldscreenings with PID
8-5
1 VOC Sample per Blockchosen based on feld
screenings with PID
7-CompA7
8-CompA
0-3.5
0-3.5
0-3.5
0-4.5
0-4.5
0-4.5
0-4.5
0-4.5
SVOCs and Metals(1 Sample)
1 VOC1 Composite SVOCs and
Metals
7-2 7-2
7-3 7-3
7-4 7-4
7-1
5 feet
7-1
7-5 7-5
0-3.5
0-3.5
Block ID Boring ID
Average Boring
Depth (Feet)/SoilVolume Evaluated(cubic yards)
"Grab"Sample IDs
Sample
DepthIntervals(Feet, bgs)
Analytical Parametersfor "Grab" Samples "Composite" Sample IDs
Analytical
Parameters for"Composite"Samples
Total Number of samples
5 feet 1 VOC Sample per Blockchosen based on feld
screenings with PID
1-CompA SVOCs and Metals
(1 Sample)
1 VOC1 Composite SVOCs and
Metals
1-1
Table
Soil Sampling Analysis Plan
Former Gathings Motor Company
Brownfields Project No.:22074-18-060
Wood Project No.: 6228-18-0495
Charlotte, North Carolina
1
0-3.51-1
10-6 10-6 0-4
10-7 10-7 0-4
10-8 10-8 0-4
10-9 10-9 0-4
10-10 10-10 0-4
10-11 10-11 0-4
10-12 10-12 0-4
10-5
10 5 feet
1 VOC Sample per Block
chosen based on feld
screenings with PID
10-CompA SVOCs and Metals
(1 Sample)
10-3 10-3
10-4 10-4
10-5
10-1
1 VOC
1 Composite SVOCs and
Metals
10-2 10-2
0-4
0-4
0-4
0-4
0-4
10-1
Work Plan for Soil Characterization March 7, 2019WoodProject: 6228-18-0495
7
FIGURES
1-1 1-2 1-3 1-4 1-5
1-61-71-81-91-102-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
2-9
2-10
3-1 3-2 3-3 3-4 3-5
3-103-93-83-73-6
4-1 4-2 4-3 4-4 4-5
4-6 4-7 4-8 4-9 4-10
5-1 5-2 5-3 5-4 5-5
5-6 5-7 5-8 5-9 5-10
6-1 6-2 6-3
6-4 6-5 6-6
6-7 6-8 6-106-9
7-1 7-2 7-3
7-4
7-5
7-6 7-7 7-8
7-9 7-10
8-1 8-2
8-3 8-4
8-5 8-6
8-7 8-8
8-9 8-10
9-1 9-2
9-3 9-4
9-5 9-6
10-1 10-2 10-3 10-4 10-5
10-6 10-7
10-8
10-9
10-10
10-11
10-12
Esri, HERE, Garmin, © OpenStreetMap contributors, and the GIS user community
Sampling GridFormer Gathings Motor Company1100-1200 South Tryon StreetCharlotte, North CarolinaBrownfields Project #: 22074-18-060
PROJECT NO.:FIGURE NO.:6228-18-0495 1Document Path: F:\AMEC_Projects\2018\6228-18-0495\MXD\Sampling_Grid.mxd Prepared By: LMM 1/28/19; Checked by RCF 1/28/19
0 60 12030Feet
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LEGEND
P
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Composite Sample "Block" Area
Proposed Boring Location and Designation!
P Sediment Basin Boring (completed)
P Soil Boring/Monitoring Well (completed)
"Background" Soil Boring (completed)P
1-1 1-2 1-3 1-4 1-5
1-61-71-81-91-102-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
2-9
2-10
3-1 3-2 3-3 3-4 3-5
3-103-93-83-73-6
4-1 4-2 4-3 4-4 4-5
4-6 4-7 4-8 4-9 4-10
5-1 5-2 5-3 5-4 5-5
5-6 5-7 5-8 5-9 5-10
6-1 6-2 6-3
6-4 6-5 6-6
6-7 6-8 6-106-9
7-1 7-2 7-3
7-4
7-5
7-6 7-7 7-8
7-9 7-10
8-1 8-2
8-3 8-4
8-5 8-6
8-7 8-8
8-9 8-10
9-1 9-2
9-3 9-4
9-5 9-6
10-1 10-2 10-3 10-4 10-5
10-6 10-7
10-8
10-9
10-10
10-11
10-12
Sampling Grid on Cut/Fill PlanFormer Gathings Motor Company1100-1200 South Tryon StreetCharlotte, North CarolinaBrownfields Project #: 22074-18-060
PROJECT NO.:FIGURE NO.:6228-18-0495 2Document Path: F:\AMEC_Projects\2018\6228-18-0495\MXD\Sampling_Gridcut.mxd Prepared By: LMM 1/28/19; Checked by RCF 1/28/19
0 60 12030Feet
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LEGEND
Composite Sample "Block" Area
Boring Location and Designation!
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