23074_Bookers Garage_AWP_20210504

Via Email
May 4, 2021
NCDEQ — Division of Waste Management
Brownfields Program
1646 Mail Service Center
Raleigh, NC 27699-1646
Attention: Ms. Kathleen Markey
Re: In -Situ Soil Characterization Work Plan - Revised
Bookers Garage
Charlotte, North Carolina
Brownfields Project No. 23074-19-060
H&H Job No. SCF-001
Dear Kathleen:
1.0 Introduction
hart '_V hickman
SMARTER ENVIRONMENTAL SOLUTIONS
Hart & Hickman, PC (H&H) has prepared this In -Situ Soil Characterization Work Plan for the
proposed redevelopment at the Bookers Garage Brownfields property (Brownfields Project No.
23074-19-060) located west of the intersection of Seigle Avenue and E. 15th Street in Charlotte,
Mecklenburg County, North Carolina (Site). A Site location map is provided as Figure 1, and a
Site map with an overlay of the proposed redevelopment is shown in Figure 2.
Redevelopment plans include construction of a multi -story high -density luxury residential
apartment complex and a multi -story open air parking garage. Site work as part of the planned
redevelopment includes razing the existing Site buildings and grading to level the Site for the
planned apartment building and parking garage. The Site buildings have been removed to the
foundation slabs (where applicable). The building slab demolition and removal will be
completed as part of planned grading activities. The open-air parking garage will be constructed
below the first level of residential units and grading plans include cut of up to approximately 10
2923 South Tryon Street, Suite 100 3921 Sunset Ridge Rd, Suite 301
Charlotte, NC 28203 Raleigh, NC 27607 www.harthickman.com
704.586.0007 main 919.847.4241 main

Ms. Kathleen Markey
May 4, 2021
Page 2
feet below current grade to reach final proposed elevations in the area of the parking garage.
Remaining portions of the Site are generally on grade or include shallow fill to achieve proposed
final grade elevations.
H&H proposes to complete in -situ soil assessment activities in areas of proposed cut for the
parking garage to evaluate the potential for impact and characterize soil that may be removed
from the Site as part of grading and redevelopment activities. Proposed in -situ soil
characterization assessment activities are described in the following sections.
2.0 Brownfields In -Situ Soil Characterization Activities
H&H proposes to conduct soil assessment activities to identify proposed cut areas at the
Brownfields property that do not have compound concentrations above DEQ Inactive Hazardous
Sites Branch (IHSB) Protection of Groundwater and Residential Use Preliminary Soil
Remediation Goals (PSRGs) to assist in export of non -impacted soil during grading activities.
The proposed assessment activities will be performed in general accordance with DEQ IHSB
Guidelines for Assessment and Cleanup (Guidelines) dated January 2020, 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.
Based on review of the most recent version of the foundation plans and following discussions
with the general contractor for the Site, H&H understands that proposed redevelopment will
generate approximately 1,550 cubic yards of soil which will likely need to be transported off -Site
as export. Geotechnical assessment results indicate soil at the Site is suitable for construction
purposes. Therefore, additional export of structurally unsuitable soil is not anticipated at this
time.
To expedite grading activities and to minimize the need to stockpile and manage large volumes
of soil during construction, H&H proposes to conduct soil assessment activities at the Site to
characterize soil in -situ before grading activities begin. A copy of the most recent grading plan
m:\aaa-master projects\spacecraft\bookers garage\in-situ assessment\work plan\22076 - in situ soil characterization work plan bookers garage.doc hart h i c k m a n

Ms. Kathleen Markey
May 4, 2021
Page 3
and cut -fill analysis is provided as Appendix A. A summary of the proposed in -situ soil
assessment activities is provided in the following sections.
2.1 Soil Characterization Sampling Activities
H&H proposes to conduct soil assessment activities to evaluate subsurface conditions for
potential impacts at the Site where soil may need to be direct loaded for transport off -Site during
grading activities. Proposed cut in areas in the western part of the Site in the vicinity of the
proposed parking garage extends to depths ranging from approximately 5 to 10 feet below
ground surface (ft bgs). H&H divided the Site into three (3) in -situ soil characterization sections
based on proposed cut depths in each area. H&H proposes to collect soil samples for laboratory
analysis in each soil characterization section to represent material that may need to be exported
off -Site. The in -situ soil characterization sections (denoted by EX nomenclature) are shown in
Figure 3. In addition, a tabular summary of the estimated volume of export soil represented by
each in situ soil sample is provided on Figure 3.
As shown in Figure 3, results of previous soil sampling activities completed at the Site in 2019
and 2020 identified compounds at concentrations above the DEQ IHSB PSRGs is shallow soil
near the western Site boundary (SB-4) and within the dripline of the residence located at 1115
Seigle Avenue (SS-2A through SS-21)). The western portion of the Site is planned for fill and
impacted soil in the area of SB-4 will be managed on -Site. Soil within the dripline of the 1115
Seigle Avenue residence is generally planned for fill with the exception of the northwestern
dripline represented by aliquot soil sample SS-2D which is located within an area of planned cut
for the parking garage (Figure 3).
Elevated lead concentrations in soil are expected to be limited to shallow soil within the dripline
of the former residence. To ensure soil with elevated lead concentrations is not mixed with
export soil during grading activities in the area of the parking deck, the grading contractor will
excavate the dripline areas to the proposed final grade elevation prior to mass grading. Soil
excavated from the area of the 1115 Seigle Avenue dripline will either be direct loaded onto
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Ms. Kathleen Markey
May 4, 2021
Page 4
trucks for transport and disposal at Republic Services landfill in Concord, North Carolina, or
placed on plastic and secured as outlined in the DEQ-approved Environmental Management Plan
(EMP).
Following removal of the dripline soil and prior to mass grading, shallow soil sample aliquots
will be collected every approximate 10 linear feet outside of and adjacent to the excavation in the
direction of planned cut at a similar elevation to the initial dripline soil samples to confirm that
impacted soil has been adequately removed. The soil sample aliquots will be homogenized to
form one composite post -excavation confirmation soil sample. The confirmation soil sample
selected for laboratory analysis will be placed in laboratory supplied glassware, labeled with the
date, time, and sample identification and placed in a laboratory supplied sample cooler with ice.
The soil sample will be submitted to a North Carolina certified laboratory under standard chain
of custody protocols for analysis of lead by EPA Method 6020. Following grading activities and
completion of soil export, if soil excavated from the dripline area will be managed on -Site, the
location and depth of the final disposition of dripline soil will be documented and provided to
DEQ.
For the in situ soil characterization assessment activities, H&H will contract with a qualified
drilling contractor to advance several soil borings in each soil characterization section to a depth
corresponding to the deepest planned cut in that characterization section. Initially, the drilling
contractor will advance each soil boring with a decontaminated stainless steel hand auger
followed by a track -mounted direct push technology (DPT) drill rig at depths greater than 5 feet.
During boring advancement, continuous soil samples will be collected from each boring from the
center of the hand auger bucket, logged for lithologic description, inspected for the presence of
visual and olfactory indication of potential impacts, and screened for the presence of volatile
organic vapors with a calibrated photoionization detector (PID).
A total of four (4) in -situ soil samples will be collected as part of the assessment for
characterization of the approximately 1,550 cubic yards of soil for export. As noted above, cut
depths for construction of the parking garage will extend up to approximately 5 to 10 ft bgs. The
raAaaa-master projects\spacecraft\bookers garage\in-situ assessment\work plan\22076 - in situ soil characterization work plan bookers garage.doc hart h i c k m a n

Ms. Kathleen Markey
May 4, 2021
Page 5
areas near the southern and northeastern part of the parking garage have been divided into two
(2) in -situ soil characterization sections denoted EX-1 and EX-3 where borings will be advanced
to approximately 5 ft bgs. The north -central part of the parking garage is denoted EX-2
represents an area of deeper cut where soil borings will be advanced to approximately 10 ft bgs.
Proposed soil boring locations for each soil characterization section are shown in Figure 3.
Continuous soil sample aliquots will be collected from each of the soil borings advanced in each
soil characterization section. Soil sample aliquots collected from each boring advanced in a
section will be homogenized to form composite soil samples representative of the cut depths at 5
foot intervals. The sample aliquots from sections EX-1 and EX-3 will be homogenized to form
composite samples representative of shallow soil (0-5 ft bgs) for a total of one sample per
section. The sample aliquots in EX-2 will be homogenized to form compositive samples
representative of shallow soil (0-5 ft bgs) and deeper soil (5-10 ft bgs) for a total of two samples.
The four (4) composite soil samples selected for laboratory analyses will be collected directly
into dedicated laboratory supplied sample containers, labeled with the date, time, and sample
identification, and placed in a laboratory supplied sample cooler with ice. The samples will be
submitted to a North Carolina certified laboratory under standard chain of custody protocols for
analysis of semi volatile organic compounds (SVOCs) by EPA Method 8270 and Resource
Conservation and Recovery Act (RCRA) metals plus hexavalent chromium by EPA Methods
6020/7471/7199.
In addition to the composite in situ soil samples described above, one representative grab soil
sample will be collected from each soil characterization section and depth for a total of four (4)
grab samples. Based on results of field screening, a grab soil sample will be collected from the
aliquot exhibiting the highest likelihood for impact in each soil characterization area. If field
screening results do not identify obvious presence of impacts in an aliquot soil sample, the grab
samples will be collected from a randomly selected aliquot in each evaluation area. The grab
soil samples will be collected from undisturbed portions of soil directly into laboratory supplied
glassware and submitted to a North Carolina certified laboratory under standard chain of custody
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Ms. Kathleen Markey
May 4, 2021
Page 6
protocols for analysis of VOCs by EPA Method 8260. A sample summary table is included as
Table 1.
Investigation derived waste (IDW) generated during the assessment activities will be spread
evenly across the Site unless field observations such as staining or free product indicate that soil
should be containerized and sampled. Following sampling activities, the soil borings will be
properly abandoned and the surface will be repaired similar to pre -drilling conditions. In
addition, soil boring locations will be estimated using a hand held global positioning system unit.
2.2 Quality Assurance/Quality Control
To evaluate the reproducibility of the sample results, H&H will collect one duplicate soil sample
which will be submitted for the same laboratory analysis as the parent sample. Non -dedicated
equipment and tools will be decontaminated prior to use at each boring or sampling location or
following exposure to soil.
Laboratory QA/QC procedures will be employed to ensure appropriate sample handling and
analysis and to aid in the review and validation of the analytical data. QA/QC procedures will be
conducted in accordance with the method protocols and will include regular equipment
maintenance, equipment calibrations, and adherence to specific sample custody and data
management procedures. Samples will be analyzed in conjunction with appropriate blanks,
laboratory duplicates, continuing calibration standards, surrogate standards, and matrix spiking
standards in accordance with approved methodologies to monitor both instrument and analyst
performance. H&H will request that the laboratory reporting limits for each analyte be equal to
or below applicable screening criteria. Additionally, H&H will request that the laboratory
include estimated concentrations for compounds that are detected at levels above the laboratory
method detection limit, but below the laboratory reporting limit (J Flags).
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Ms. Kathleen Markey
May 4, 2021
Page 7
2.3 Reporting
Following completion of the soil assessment activities and receipt of the analytical data, H&H
will initially prepare a data summary package for DEQ review to accommodate the construction
schedule. The data summary package will include tabular summary of the laboratory analytical
results in comparison to the regulatory screening levels, a figure depicting the in -situ sample
locations, copies of the laboratory analytical reports, and a request to provide pre -approval for
export to suitable receiving facilities based on sampling results.
Following submittal of the data summary package for DEQ review, a brief in situ soil
characterization report will be prepared to document the assessment activities. The report will
include a description of the sampling activities, a figure depicting sample locations, soil boring
logs, laboratory analytical data, a discussion of the data in comparison to regulatory screening
levels, and conclusions concerning our activities.
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Ms. Kathleen Markey
May 4, 2021
Page 8
Grading activities at the Site are scheduled to begin in the near term and the in situ soil sampling
activities are scheduled to begin on May 5, 2021. We appreciate your prompt review of the
Work Plan and look forward to receiving your approval to proceed. Should you have any
questions or have comments that need to be addressed prior to providing approval of the
proposed scope of work, please do not hesitate to call me at [phone].
Sincerely,
P
Ralph McGee, P
Project Manager
PC
cc: Ms. Anna Coltrane, Space Craft (via email)
Attachments:
Table 1 Sample Summary Table
Figure 1 Site Location Map
Figure 2 Site Map
Figure 3 Proposed In -Situ Soil Sample Location Map
Appendix A Grading Plan and Cut -Fill Analysis
Alexis McKenzie, EI
Project Engineer
m laaa-master projects\spacecraftlbookers garage\in-situ assessment\work plan\22076 - in situ soil characterization work plan bookers garage.doc hal hickman

Table
m:\aaa-master projects\spacecraft\bookers garage\in-situ assessment\work plan\22076 - in situ soil characterization work plan bookers garage.doc hart w h i c k m a n

Table 1
Sample Summary Table
Bookers Garage
Charlotte, North Carolina
H&H Project No. SCF-001
Approximate Boring
Approximate
Number of
Estimated Soil Volume
Sample IDs
Sample Objective
Depth (ft)
Sample Depth (ft)
Samples
Characterized per Sample
Laboratory Analysis
cubicyards)
EX-1
Evaluate soil conditions in areas of cut for
5
0-5
1
790
EX-2
10
0-5, 5-10
2
1,000
export
VOCs (8260), semi-VOCs (8270), RCRA metals
(6020/7471), and hexavalent chromium (7199)
EX-3
5
0-5
1
110
EX-D U P
QA/QC
5
0-5
1
NA
Notes:
EPA Method Number Follows Laboratory Parameter in Parenthesis
VOCs = Volatile Organic Compounds; RCRA = Resource Conservation Recovery Act
ft = feet; QA/QC = Quality Assurance/ Quality Control; NA = Not Applicable
Table 1 (Page 1 of 1)
M:\AAA-Master Projects\SpaceCraft\Bookers Garage\In-Situ Assessment\Work Plan\Sample Summary Table Hart & Hickman, PC

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14
mAaaa-master projects\spacecraft\bookers garage\in-situ assessment\work plan\22076 - in situ soil characterization work plan bookers garage.doc hart h i c k m a n

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LEGEND
BROWNFIELDS PROPERTY BOUNDARY
° PARCELBOUNDARY
�\ PROPOSED SOIL BORING ALIQUOT
X
LOCATION TO 5 FT BGS
i
\ ` PROPOSED SOIL BORING ALIQUOT
LOCATION TO 10 FT BGS
°
SOIL BORING SAMPLE LOCATION (2019)
Q DRIP LINE SOIL SAMPLE LOCATION (2020)
° 7
SB-2B / f• CUBIC YARDS CHARACTERIZED PER SAMPLE
0-5 5-10
° EX-1 790
EX-2 1,000 1,000
° EX-3 110
SB-2C °
SB-2D °
SB-3A
SB-3B
EX-3
SB-3C
klr,A
NOTES:
1. CUT -FILL HEAT MAP PROVIDED BY URBAN
DESIGN PARTNERS.
SB-1 D
Se-4
SS-2 SS-2 0-1' (10/9/20) mg/kg
' ® LEAD 2,310
SS-2C SS-213 O° /
A � ®s APPROXIMATE
DRIPLINE SOIL TO BE 4 �°0 25 50
REUSED ON SITE PJ�' SCALE IN FEET
"`
C-0 PROPOSED IN -SITU
' SOIL SAMPLE LOCATION MAP
0
BOOKERS GARAGE
/ 1113 AND 1121 SEIGLE AVENUE AND
820 E. 15TH STREET
CHARLOTTE, NORTH CAROLINA
4 2923 South Tryon Street -Suite 100 hart � hickman
Charlotte, North Carolina 28203
704-586-0007(p) 704-586-0373(f
SMARTER ENVIRONMENTAL SOLUTIONS Licensc # C-1269 / #C-245 Gcolop
DATE: 4-13-21 REVISION NO. 0
JOB NO. SCF-001 FIGURE NO. 3

Appendix A
Grading Plan and Cut -Fill Analysis
14
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PCSO SUMMARY
Original Parcel ID Number(s):
081-099-13, 081-099-14, 081-099-21
Development Type:
Multi -Family
Subject to PCCO? Y/N
No
If NO, why?
Below BUA/Disturbance Thresholds
Watershed:
Central Catawba
Disturbed Area (ac):
0.60
Site Area (ac):
0.52
DA#1
DA#2
Total on -site Drainage Area (ac):
0.52
Existing Built -upon -area (SF):
13,188 sf (0.30 ac)
Existing BUA to be removed (SF):
13,188 sf
Existing BUA to remain (SF):
0 sf
Proposed New BUA (SF):
17,248 sf (0.40 ac)
Proposed % BUA:
76.48%
Density (High / Low)
High
Total Post -Project BUA for site:
0.35 ac (67%)
Development or Redevelopment?
Redevelopment
Natural Area Required (ac):
0.052 ac (2,255 sf)
Natural Area provided, total (ac):
0.055 ac (2,380 sf)
Undisturbed Treed Natural Area Preserved (ac):
N/A
Total stream buffer protected on -site (ac):
0.05 ac
Transit Station Area? Y/N
No
Distressed Business District? Y/N
Yes
Mitigation Type (if applicable)
Payment in -lieu
Natural Area mitigation? Y/N
No
Buffer Mitigation? Y/N
Yes
Total Phosphorous Mitigation? Y/N
No
GRADING AND STORM DRAINAGE NOTES:
1. ON -SITE BURIAL PITS REQUIRE A PERMIT.
2. ANY GRADING DONE BEYOND THE DENUDED LIMITS INDICATED ON THE
CONSTRUCTION DOCUMENTS IS A VIOLATION AND IS SUBJECT TO A FINE.
3. GRADING MORE THAN ONE ACRE WITHOUT AN APPROVED EROSION CONTROL PLAN
IS A VIOLATION AND IS SUBJECT TO A FINE.
4. ALL FINAL CURB AND STREET GRADES AT INTERSECTIONS SHALL BE COORDINATED
WITH INSPECTOR.
5. SIGHT TRIANGLES INDICATED ARE THE MINIMUM REQUIRED.
6. APPROVAL OF CONSTRUCTION DOCUMENTS IS NOT AN AUTHORIZATION TO GRADE
ADJACENT PROPERTIES. WHEN FIELD CONDITIONS WARRANT OFF -SITE GRADING,
PERMISSION SHALL BE OBTAINED BY CONTRACTOR FROM THE AFFECTED PROPERTY
OWNERS.
7. IN ORDER TO ENSURE PROPER DRAINAGE, CONTRACTOR SHALL MAINTAIN A
MINIMUM OF 0.5% SLOPE ON THE CURB.
8. SUBSURFACE DRAINAGE FACILITIES MAY BE REQUIRED IN THE STREET RIGHT OF
WAY IF DEEMED NECESSARY BY THE INSPECTOR.
9. THE CONTRACTOR SHALL MAINTAIN EACH STREAM, CREEK OR BACKWASH
CHANNEL IN AN UNOBSTRUCTED CONDITION AND SHALL REMOVE FROM THESE AREAS
ALL DEBRIS, LOGS, TIMBER, TRASH, JUNK AND OTHER ACCUMULATIONS.
10. ANY CONSTRUCTION OR USE WITHIN THE AREAS DELINEATED AS FLOODWAY
DISTRICT FRINGE BOUNDARY LINE OR FLOODWAY DISTRICT ENCROACHMENT BOUNDARY
LINE IS SUBJECT TO THE RESTRICTIONS IMPOSED BY THE FLOODWAY REGULATIONS.
11. THE LOCAL ENGINEERING DEPARTMENT HAS NOT REVIEW AND DOES NOT ASSUME
RESPONSIBILITY FOR THE STRUCTURAL STABILITY OF ANY EXISTING OR PROPOSED
RETAINING WALLS ON THE SITE.
12. NON-STANDARD ITEMS (I.E.: PAVERS, IRRIGATION SYSTEMS, ETC.) IN THE RIGHT
OF WAY REQUIRE A LOCAL OR STATE ENCROACHMENT AGREEMENT PRIOR TO
INSTALLATION.
13. ALL "CLDSM" NUMBERS REFER TO THE CHARLOTTE LAND DEVELOPMENT
STANDARDS MANUAL.
14. ALL SIDEWALKS, STOOPS, TERRACES AND OTHER PAVED AREAS SHALL SLOPE
AWAY FROM BUILDINGS) AT A MINIMUM OF 2%.
15. CONTRACTOR SHALL CONTACT INSPECTOR 48 HOURS BEFORE CONSTRUCTION.
16. STABILIZE ALL SLOPES GREATER THAN 3:1 WITH JUTE MESH.
17. ALL ELEVATIONS ARE IN REFERENCE TO THE BENCHMARK WHICH MUST BE
VERIFIED BY THE CONTRACTOR PRIOR TO STARTING CONSTRUCTION.
18. ALL CONTOURS AND SPOT ELEVATIONS REFLECT FINISHED GRADES. REFER TO
PAVEMENT CROSS-SECTION DATA TO ESTABLISH CORRECT SUB -BASE, AGGREGATE
BASE COURSE ELEVATIONS TO BE COMPLETED UNDER THIS CONTRACT.
19. CONTRACTOR SHALL BLEND NEW EARTHWORK SMOOTHLY WITH EXISTING
CONTOURS.
BEFORE YOU DIOI
CALL 811 OR 1-800-632-4949
N.C. ONE -CALL CENTER
IT'S THE LAWI
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U R B
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DESIGN
PARTNERS
1318-e6 central ave.
P 704.334.3303
charlotte, nc 28205
F 704.334.3305
urbandesignpartners.
com
nc firm no: P-0418
sc coa no: C-03044
CIE
27800
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Project No: 19-133
Date: 09.30.2020
Designed by: UDP
Drawn By: UDP
Sheet No:
C-400
INCH = 10 FEET

Elevations Table
Number
Minimum Elevation
Maximum Elevation
Color
1
—9.688
—4.630
2
—4.630
—1.000
3
—1.000
—0.332
4
—0.332
—0.003
5
—0.003
0.132
_
6
0.132
0.718
7
0.718
1.914
g
1.914
7.527
MEH

Information I Definition I Analysis Statistics 1
statistics
p+ General
S TIN
(D Volurne _
Base Surface
Comparison Surface
Cut Factor
Fill Factor
Cut volume (adjusted)
Fill volume (adjusted)
Net volume (adjusted)
Cut volume {unadjusted)
Fill volume (unadjusted)
Net volume (unadjusted)
Value
19-133 EG
19-133 FG
1.000
1.150
2186.79 Cu, Yd.
639.90 Cu. Yd,
1547.00 Cu, Yd.tCut>
2186.79 Cu, Yd.
556,34 Cu. Yd.
1630.45 Cu. Yd.4 Cuts