19059_Stork Rotary_WP SG&Approval_20200911

ROY COOPER
Governor
NORTH CAROLINA
Environmental Quality
MICHAEL S. REGAN
Secretary
MICHAEL SCOTT September 11, 2020
Director
Sent Via E-Mail
Thomas C. Hassett, P.E.
GEOSCIENCE GROUP, INC.
500-K Clanton Road
Charlotte, NC 28217
thassett(a, geos ciencegroup. com
Subject: Brownfields Work Plan -Supplement Sampling Approval
Stork Rotary RFRU
Charlotte, Mecklenburg County
Brownfields Project Number 19059-15-060
Dear Mr. Hassett,
The Department of Environmental Quality (DEQ) Brownfields Program received your Work
Plan -Supplement Sub Slab Vapor Sampling (Revision 3) dated September 11, 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(d),ncdenr. gov
Sincerely,
Carolyn Mininch
Brownfields Project Manager
ec: Sorell, Clint csorrell(&,,togroup.net
n r:� na�ni D E
wons.n�e.wnmbmai ouai�
North Carolina Department of Environmental Quality I Division of Waste Management
217 West ones Street 11646 Mail Service Center I Raleigh. North Carolina 27699-1646
919,707,8200

September 11, 2020
Consulting Engineers
Tower Engineering Professionals, Inc.
326 Tryon Road
Raleigh, North Carolina 27603
GEQSCIENCE Attention: Mr. Clint E. Sorrell, P.G.
GROUP
Reference: Work Plan - Supplemental Sub -Slab Vapor Sampling (Revision 3 )
Project Name: 3201 Rotary Drive
Charlotte, North Carolina
Geoscience Project No. CH13.0048.EV
Brownfields Project No. 19059-15-060
The project site is currently subject to a Brownfield Agreement with the North Carolina
Brownfields Program (NCBP). Tower Engineering Professionals, Inc. has requested that
additional sub -slab vapor samples be collected at the subject site. The purpose of this
proposed sub -slab vapor sampling event is to further assess the potential for vapor intrusion
into the existing building.
Geoscience appreciates this opportunity to be of service to you. If you have any questions, or
require additional information, please contact the undersigned at [phone].
Project LWjj;�
North Carolina
Geoscience Group, Inc. is licensed to practice engineering in North Carolina. The certification
number of the company is F-0585.
Enclosures
File 2013/048 — Stork Bldg 2/2020 Vapor/Sampling Plan letter revl
500 Clanton Road Charlotte, North Carolina Telephone Facsimile NC License
Suite K 28217 704.525.2003 704.525.2051 F 0585

Tower Engineering Professionals, Inc.
Geoscience Project No. CH13.0048.EV
Brownfields Project No. 19059-15-060
September 11, 2020
Page 2
1: INTRODUCTION
The 6.9f acre subject property is located along the northern side of Rotary Drive,
approximately 1,400 feet west of its intersection with Starita Road in Charlotte, North Carolina.
The property is comprised of Mecklenburg County Tax Parcel ID No. 04501312 and has a
physical address of 3201 Rotary Drive. An existing single -story building occupies the central
portion of the site. The building (approximately 46,800 square feet) was reportedly constructed
in 1968 and is currently in use as office and warehouse space. The portion of the property
surrounding the existing building generally consists of paved parking areas, landscaped area,
and grass lawns. However, the northern portion of the site (approximately 2 acres) is wooded
land.
Background: The property was owned by Covington Diesel from 1968 until 1985.
Covington Diesel operated the site as an automotive engine repair facility and truck garage.
In 1985, SPG Prints purchased the site from Covington Diesel. SPG Prints also owned the
western adjoining property (3001 Boxmeer Drive) and operated both facilities as a single
campus. The 3001 Boxmeer Drive property is also subject to a Brownfields Agreement
(19051-15-060).
Primary production work by SPG Prints on the subject site was production of nickel sleeves
from the operation of nickel -plating baths. Other key activities included production of
mandrels and rollers out of copper and chromium plating baths. In addition, SEAMEX
polymer production that was initially performed at the adjoining 3001 Boxmeer Drive
property was moved to the subject site. The polymer process involved the use of
tetrachloroethylene (PCE) and trichloroethylene (TCE). SEAMEX polymer production
reportedly ceased in 1990.
It is our understanding that the site was placed under a Ready -for -Reuse Brownfields
Agreement in October of 2016.
Soil Impact: Previous assessments at the property identified minor impacts from metals.
However, only arsenic was detected at concentrations exceeding North Carolina remediation
goals. Arsenic detections on the site ranged from 3 to 10 mg/kg, but background samples
exhibited concentrations of 4.1 and 4.6 mg/kg. With no known sources of arsenic from site
operations, the on -site arsenic was deemed to be naturally occurring.
Groundwater Impact: Previous assessments identified chlorinated solvent contamination in
the shallow groundwater across the central portion of the site. Specifically, PCE was
detected at sample locations GP-1, GP-3, and MW-101 (see Figure 2, attached) at
concentrations exceeding North Carolina Groundwater (2L) Standards. In addition, TCE was
detected at GP-3 at a concentration exceeding its 2L Standard. The concentrations of PCE
and TCE detected at location GP-3 also exceeded their respective non-residential vapor
intrusion screening levels. Although chlorinated solvent contaminants were also detected in

Tower Engineering Professionals, Inc.
Geoscience Project No. CH13.0048.EV
Brownfields Project No. 19059-15-060
September 11, 2020
Page 3
the groundwater at the western adjoining 3001 Boxmeer Drive property, the assessments
conducted to date suggest that the plumes are separate. Therefore, it is presumed that the
chlorinated solvent contamination at the subject property is the result of historic site
operations.
Potential Vapor Intrusion: Geoscience previously installed temporary sub -slab vapor
monitoring points (V-1 through V-5 and V101 through V103) at eight (8) locations in the
building. The approximate locations of the sample points are indicated on the attached
Figure 2A.
Analysis of sub -slab vapor samples collected at these locations collected in December 2013
and October 2015 revealed the presence of several VOCs in the soil gas beneath the building.
Specifically, PCE was detected at all sample locations during both sampling events, with the
highest concentration being detected at sample point V-5. While the PCE concentration at
V-5 was below the non-residential vapor intrusion screening level during the 2013 sampling
event, it was detected at a concentration of 3,590 µg/m3 in 2015, which slightly exceeds its
3,500 µg/m3 non-residential vapor intrusion screening level. No other compounds were
detected at concentrations that exceed the current (February 2018) soil gas concentration
screening levels for non-residential properties.
In order to further assess vapor intrusion, two (2) rounds of indoor air samples were collected
close to the location of sample V-5. These sampling events demonstrated that PCE
concentrations inside that portion of the building did not exceed non-residential indoor air
screening levels. A table summarizing the previous indoor and sub -slab vapor sampling
results is attached.
It is our understanding that sub -slab vapor sampling has not been conducted at the site since
late 2015. The proposed sampling event is intended to provide updated sub -slab vapor
contaminant concentration information. It is not intended for use by any DEQ programs
other than the Brownfields Program.
2: PROPOSED SCOPE OF WORK
Geoscience proposes to install and sample seven (7) temporary sub -slab vapor monitoring
points inside the existing building. The purpose of the sample collection is to provide
updated PCE concentration information for the locations that were sampled during previous
sampling events. Geoscience proposes to collect she sub -slab vapor samples at locations
V-101, V-102, V-103, V-1, V-3, V-4, and V-5. We have opted not to resample location V-2
for the following reasons: location V-2 is close to location V-103, and the PCE concentration
at V-103 was higher than at V-2 during the previous sampling events. Each of the sub -slab
vapor samples will be collected from immediately below the existing floor slab and will be
analyzed by EPA Method TO-15 for PCE, TCE, and their degradation products. In addition,
each sample will be analyzed for helium content (leak test verification). A summary of the
proposed samples can be found in Table 1, attached.

Tower Engineering Professionals, Inc.
Geoscience Project No. CH13.0048.EV
Brownfields Project No. 19059-15-060
September 11, 2020
Page 4
3: SAMPLING METHODOLOGY
The sub -slab vapor samples will be collected and analyzed in general conformance with the
Division of Waste Management Vapor Intrusion Guidance document dated March 2018
(Version 2). Specifically, temporary sub -slab monitoring points will be established at the
selected locations. These temporary monitoring points will be created by grouting '/4 inch
diameter Teflon tubing into a hole drilled through the building floor slab. The soil gas
samples will be collected approximately one inch or less below the bottom of the concrete
floor slab. The newly installed sub -slab vapor monitoring points will be allowed to
equilibrate for approximately 24 hours before samples are collected.
In accordance with the guidance document, various types of information will be obtained and
recorded for this sampling effort. The "Indoor Air Building Survey and Sampling Form"
found in Appendix C of the DWM Vapor Intrusion Guidance document will be used to
record data regarding building type, building contents, occupant information, sampling
information, and prevailing weather conditions during the sampling event.
Each sub -slab gas sample will be collected using a 6 Liter Summa canister fitted with a flow
orifice pre -calibrated to collect a sample over a 30-minute period (200 ml/min.). The canister
will be connected via a 3-way valve to the sampling point. The valve will provide for: flow
from the sample point to the canister, flow from the sample point to a purge line, and a closed
condition (no flow). After assembly of the sample train, the 3-way valve will be closed, and
the canister valve opened to establish a vacuum in the portion of the sample train between the
3-way valve and the canister. The canister valve will then be closed and the vacuum level in
the sample train monitored for 2 minutes. If the vacuum level in the sample train holds, the
vacuum leak test will be considered to have been passed.
The sample canister, monitoring point and associated tubing will then be enclosed within a
plastic shroud. Throughout the sample collection process, an approximately 40% helium
atmosphere will be maintained within the shroud. Prior to sample collection, using a syringe,
three (3) volumes of the sampling train will be purged from the monitoring point at a rate not
to exceed 200 ml/min. Following the purge, a Dielectric MGD 2002 Leak Detector will be
used to monitor the concentration of helium in gases being drawn through the sampling train.
Helium concentrations measured in the sampling train that are less than 10% of the shroud
concentration will be considered to have passed the helium leak test.
Once the helium leak test has been passed, the valves will be set such that sub -slab vapor is
pulled into the canister through the flow control orifice. Vacuum readings will be recorded
upon receipt of the canister from the laboratory, before and after the vacuum leak test, at the
start of sample collection, and at the termination of sample collection. Sample collection will
terminate when the vacuum gauge on the canister reads a negative pressure of 5 inches of Hg.
The canisters will be boxed and shipped to the laboratory for analysis.

Tower Engineering Professionals, Inc.
Geoscience Project No. CH13.0048.EV
Brownfields Project No. 19059-15-060
September 11, 2020
Page 5
4: LABORATORYANALYSIS
The collected samples will be analyzed by EPA Method TO-15 for VOCs (full analyte list)
and for total helium content.
Geoscience has selected Pace Analytical (Pace) to perform the analyses. Pace Analytical is
NELAC certified and holds individual certifications with most states that require air
laboratory certification. Detection limits achieved by Method TO-15 are less than 0.2 ppbv
for most target compounds. Actual detection limits may vary slightly due to the volume of
air brought into the sample canister. Reporting limits are less than 1 ppbv for all TO-15
compounds. Therefore, the detection limits should be below the applicable screening levels.
Geoscience shall request that the laboratory report "J" values and report Level II QA/QC.
Geoscience proposes to collect one duplicate sample (V-104) during the sample event. The
duplicate sample will be collected at location V-4. The duplicate sample will be analyzed by
the same methods as the other collected soil gas samples. Geoscience is not proposing to
use/analyze a trip blank for this sampling event.
Sub -slab vapor samples are routinely collected using 1-liter summa canisters. For this
sampling event, Geoscience proposes to use 6-liter canisters so that the laboratory will have
sufficient sample to run the TO-15 analyses as well as the helium tests.
Pace ships sample canisters ready for use via a third -party shipping company. Upon
completion of the sample collection, the Geoscience personnel who conduct the sampling
will complete and sign the Pace supplied chain of custody form. A copy of the form and the
full sample canisters will then be sealed in the original shipping container and submitted back
to Pace via FedEx.
6: INVESTIGATION DERIVED WASTE
Geoscience does not anticipate generating any waste that contains contaminated site media during
this sampling event. Waste generated should consist only of used sample collection tubing, used
plastic bags, used nitrile gloves, and a de minimis volume concrete dust created while drilling
through the floor slab. These materials will be disposed of in a solid waste dumpster located on
the site.
7: REPORTING
Following receipt of the laboratory results, Geoscience will prepare a letter report describing
our findings. The report will be signed and sealed by a Professional Engineer licensed in
North Carolina and include:

Tower Engineering Professionals, Inc.
Geoscience Project No. CH13.0048.EV
Brownfields Project No. 19059-15-060
September 11, 2020
Page 6
1. Copies of the Indoor Air Building Survey and Sampling Form;
2. A scaled site map identifying the site, adjacent streets, and the building sampled;
3. Photographs of sample locations (as appropriate);
4. Readings from field instrumentation;
5. Laboratory analytical results;
6. Sampling procedures;
7. Any documentation regarding assessment of preferential pathways; and
8. A scaled floor plan that notes the location of sub -slab soil gas samples, observed
stains and major cracks in slab/foundations, sumps, French drains, chemical storage
areas (or other potential background sources), HVAC systems, utility entrances into
buildings, etc.
File 2013/048 — Sortk Bldg 2/2020 Vapor/Sampling Plan letter

Table 1: Sub -Slab Vapor Sample Information
Background
Sample ID
Sample Objective
Proposed Depth
Analytical Methods
QA/QC Samples
Samples
Updated PCE
V-1
6inches
Concentration
Updated PCE
V-3
6inches
Concentration
Updated PCE
V-4
6inches
Concentration
TO-15:
V-5
Updated PCE
6inches
Concentration
Full Analyte List
none proposed
Updated PCE
ASTM 1946:
V-101
Concentration
6 inches
Total Helium
Updated PCE
V-102
6inches
Concentration
Updated PCE
V-103
6inches
Concentration
V-4 Duplicate
V-104
6inches
Duplicate
Sample

Table 2: Summary of Sub -Slab Vapor And Indoor Air Sampling Results
Revision August 28, 2020
Date
Building Location
Office Area
Warehouse Area
Outdoor
Air
DWM
Commercial/[
ndustrial
Vapor
Intmsion
Screening
Level:
Acceptable
Sub -Slab Soil
Gas
DWM Commercial/Industrial
Indoor Air
ScreeningLevel: "A"
(March 2016)
DWM Commercial/Industrial
Indoor Air
Screening Level:
g
(March 2016)
DWM Commercial/Industrial
Indoor Air
Screening Level: "C"
g
(March 2016)
Client Sample ID
V-1
V-2
V-3
V-102
V-103
V-101
V-104
(V-4
Duplicate)
V-4
V-5
AIR-4
AIR-4A
AIR-5
AIR-5A
AIR-6
Collect Date
12/27/2013
12/27/2013
12/27/2013
10/162015
10/16/2015
10/16/2015
10/15/2015
10/15/2015
12/27/2013
10/15/2015
12/27/2013
12/29/2015
1/30/2016
12/29/2015
1/30/2016
12/21/2015
Cancer Risk: 1.0 x 10-6
Cancer Risk: 1.0 x 10-3
Cancer Risk: 1.0 x 104
Method
Compound
Units
Hazard Quotient: 0.2
Hazard Quotient: 0.2
Hazard Quotient: 0.2
Acetone
µg/m
29.7
118
15.94
24.1
60.3
n.a.
24.3
n.a.
323
92.2
228
47.2
16.5
2,700,000
27,200
27,200
27,200
Benzene
µg/m3n.a.
n.a.
..
<1.28
a.28
<1.28
<1.28
a.28
n.a.
a.28
n.a.
0.76
1.2
0.64
a.0
0.97
1,600
1.57
15.7
26.3
Carbon Disulfide
µg/m3
5.64
a.24
1.54
a.24
a.24
n.a.
a.24
n.a.
<0.94
<0.98
<0.94
a.0
<0.98
61,000
613
613
613
Chloromethane
µg/m3
n.a.
n.a.
n.a.
<0.826
<0.826
<0.826
<0.826
6.03
n.a.
<0.826
n.a.
1.1
0.84
0.98
0.91
1.4
7,900
78.8
78.8
78.8
1,4-Dichlorobenzene
µg/m3
..
<2.40
<2.40
<2.40
<2.40
<2.40
n.a.
<2.40
n.a.
<1.8
<1.9
3.1
<2.0
<1.9
1,100
1.11
11.1
ill
1.4-Dioxane
µg/m3
na
na
na
5.39
9.47
<1.44
<1.44
3.46
..
na
<1.44
..
na
..
na
na
..
..
na
..
na
na
..
2,500
2.45
24.5
26.3
Ethanol
µg/m3
14.7
54.9
19.3
5.42
28.4
n.a.
7.48
n.a.
n.a.
n.a.
n.a.
n.a.
NL
NL
NL
NL
Ethyl Acetate
µg/m3
na
na
na
na
na
na
na
na
n.a.
n.a.
n.a
<1.1
4.3
6.3
8.4
a. .l
6,100
61.3
61.3
61.3
Ethylbenzene
µg/m3
43.6
a.73
a.73
<1.73
4.68
n.a.
<1.73
n.a.
10
5.0
25.1
27.5
a.4
4,900
4.91
49.1
491
4-Ethyltoluene
µg/m3
56.7
ash
<1.96
ash
2.59
n.a.
a.96
n.a.
19.9
10.6
54.3
55.0
<3.9
NL
NL
NL
NL
Trlchloroflumomethane
µg/m
9.11
2.51
2.47
<2.25
<2.25
n.a.
2.43
n.a.
1.8
2.0
<1.7
1.9
1.9
NL
NL
NL
NL
Dichlorodifluoromethane
µg/m3
2.55
2.67
2.30
4.39
2.11
n.a.
2.38
n.a.
2.3
3.1
2.2
2.4
2.7
8,800
87.6
87.6
87.6
n-Heptane
µg/m3
n.a.
n.a.
n.a.
<1.64
a.64
a.64
a.64
<1.64
n.a.
<1.64
n.a.
2.5
as
4.5
2.3
as
35,000
NL
NL
NL
n-Hexane
µg/m3
n.a.
n.a.
n.a.
<1.41
<1.41
<1.41
<1.41
<1.41
n.a.
<1.41
n.a.
6.0
11.8
3.6
3.1
a.1
61,000
613
613
613
TO-15
Isopropylbenzene
µg/m3
7.19
a.97
<1s7
a.97
a.97
n.a.
a.97
n.a.
n.a.
n.a.
n.a.
n.a.
n.a.
NL
NL
NL
NL
Methylene Chloride
µg/m
8.96
10.7
34.2
2.98
3.58
n.a.
3.92
n.a.
319
6,490
692
2,660
<5.5
53,000
526
526
526
2-Butanone (MEK)
µg/m3
10.9
<7.37
<7.37
<7.37
14.3
n.a.
<7.37
n.a.
4.5
<4.6
9.1
<4.8
<4.6
440,000
4,380
4,380
4,380
Napthalene
µg/m3
17.7
<6.60
<6.60
<6.60
<6.60
n.a.
<6.60
n.a.
os
<8.3
as
<8.6
<8.3
260
0.361
2.63
2.63
2-Propanol
µg/m3
na
na
..
na
<6.15
70.9
<6.15
<6.15
7.54
..
na
<6.15
na
..
..
na
..
na
na
..
na
..
na
..
NL
NL
NL
NL
Propene
µg/m3
..
a.38
ass
<1.38
ass
3.20
n.a.
<1.38
n.a.
5.0
2.7
8.0
4.0
2.6
260,000
2,630
2,630
2,630
Tetrachloroethylene (PCE)
µg/m3
3.1
81
22
135
363
250
1,730
1,090
950
3,590
2,000
1.4
3.3
1.5
4.2
a.l
3,500
35
35
35
Tetrahydrofinan
µg/m3
3.18
2.85
a.18
a.18
6.81
n.a.
a.18
..
2.0
<0s3
1.4
<0.97
1.2
180,000
1,750
1,750
1,750
Toluene
µg/m3
2.12
a.51
a.51
a.51
2.24
..
a.51
..
3.9
4.7
4.9
4.7
2.2
440,000
4,380
4,380
4,380
Trichloroethylene (TCE)
µg/m3
<2.t
12.1
2.5
<2.14
<2J4
<2.14
15.9
15.7
20
16.6
25
<0.82
<0.85
<0.82
<0.89
<0.85
180
1.75
1.75
1.75
1,2,4-Trimethylbenzene
µg/m3
n.a.
n.a.
252
a.96
a.96
<1.96
9.16
..a.
7.28
n.a.
131
58.9
301
284
1.9
5,300
6.13
6.13
6.13
1,3,5-Trimethylbenzene
µg/m3
n.a.
a.a.
76.0
a.96
a.96
<1.96
2.76
..a.
<1.96
n.a.
21.5
10.8
55.2
55.8
a.5
5,300
NL
NL
NL
Vinyl Acetate µg/m3
n.a.
..a.
11.41
<1.41
<1.41
<1.41
<141
..a.
<1.41
n.a.
6.6
a.l
3.2
<1.2
<2.9
18,000
175
175
175
M&P-Xylene
µg/m3
n.a.
..a.
144
<3.47
<3.47
<3.47
16.9
..a.
3.87
n.a.
37.2
23.7
97.7
119
3.0
8,800
87.6
87.6
87.6
o-Xylene
µg/m3
44.4
a.73
a.73
<1.73
4.79
..a.
<1.73
a.a.
9.7
5.6
23.1
30.0
1.6
8,800
87.6
87.6
87.6
Total Xylenes
µg/m3
-
-
-
188
-
-
-
21.69
-
3.87
-
46.9
29.3
120.8
149
4.6
8,800
87.6
87.6
87.6
Above Commercial/Industrial Sub -Slab Screening Level (February 2018)
Above Commercial/Industrial Indoor Screening Level - Cancer Risk (March 2016)
Above Commercial/Industrial Indoor Screening Level - Non -Cancer Risk (March 2016)
Samples Designated V-xx Are Sub -Slab Vapor Samples
Samples Designated AIR-xx Are Ambient Air Samples
n.a. = Not Analyzed
J = Detection occurred at an estimated concentration
NL = Not Listed

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DATE: September 8, 2020 1 REVISED: TCH
3201 ROTARY DRIVE
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FIGURE NUMBER:
SITE LOCATION MAP 1
(1972 USGS TOPOGRAPHIC MAP

Legend
Pmpeny Boundary
Wooded Mea
y
ih
Y
Proposed Test Location
Proposed Soil Gas Test Location
Previous Test Location
BRADLEY'S
WRECKER
SERVICE
GROUND
WATER
FLOW
STORK PRINTS
AMERICA
BUILDING I
GROUND
WATER
FLOW
WASTE
WATER
PLANT
$ M W-9
Ivl dV-102
I-S5
POLE
MOUNTED
TRANSFORMER
GAS
1. CYLINDER
i
�fi
MW-104
GR*
TRANSFORMER % o
GP-3
1 V-2 T
i•a xa .� " � T
" q
HA-1�. r. V-3
" V-4 MW-12
" ar�
GI-ISEPTIC
TANK
GRO
MW-103
Rp'SPRY DRVB
1
I-S5
GEOSCIENCE GROUP, INC.
CHARLOTTE, NORTH CAROLINA
SCALE: 1-75' APPROVED BY: DRAWN BY: RDB
DATE: September 25, 2013 REVISED: RDB
N 3201 ROTARY DRIVE
CHARLOTTE, NORTH CAROLINA
FIGURE NUMBER:
SITE LAYOUT 1 2
4
EQUIPMENT
IANAGEMEN
SURPLUS

I
I
l
I
T
?
I
I
7
.
.
70!
SMAACE RACKS
1,EItANiRE
ABANDONED
TRENCH DRAIN
673
V-4 O
67,
612
Legend:
p - Approximate Location Of Previous
Sub -Slab Vapor Monitoring Point
0 - Approximate Location Of Previous
Ambient Air Sample
Proposed Locations For Sub -Slab Vapor
Monitoring Point Current Work Plan:
V-1, V-3, V-4, V-5, V-101, V-102, and
V-103.
V-101
AIR-4/4A
cm
wumme
Q Storage
PAIR-5/5A
KAars
SMRACE RAUSACAU t wws
O
SUMP
O Room
V-5
71
717
4104
e63
672 :+6
from AIR-6
-
6su
04 Mlr6
07
fA+
001—
Wilding 2)
M
024
PRODUCTION
SE1w+CE
dne
FLOOR 50Hr7Rtx PANEL
AREA 1
F ,
1SC DEpr.
E"ONEER6
� a
� DRAIN
V-3
Vol
I a7eC
six
Sim
sty
227
616 6aro 8786
13
on
CAI�EIIERCi
664
w
ee6
6a
7i�
6�6
6+6
amO
1
s+ 1s
we
7p
;
704
703
7qE!
�
667
CQNF.
RY r
�
V-1
i
705
�
�'
676
613
1,4A 6148 613�
610
645
6m
6r 1
667
67x
67p
O
66e
667
s43
"0
631
a1
ea4
a"
63Z
E 1
W3
604
675
674
073
NZ
637
O
'
6U"T
OFFICES $71
V-102
ass
641A
V-103 0
V-2
P{PRp!
°
'°�
1 °
us
bar
an
C O V E R E n w A I. K W A r
GEOSCIENCE GROUP
CHARLOTTE, NORTH CAR
NSCALE:
V z 25'
1
APPROVED BY: ]
DATE: September 8, 2020
1
3201 ROTARY DRIVI
CHARLOTTE, NORTH CAI
AIR AND SOIL VAPOR SAMPLE
LOCATION DIAGRAM