DC340046_20240531_ADTs

DSCA ID No.:
Submittal Date:
Analytical Data Tables
for
North Carolina Dry-Cleaning Solvent Cleanup Act Program
Prepared By:
Facility Name:N.S. Farrington & Co.
1701 Lomond Street, Winston-Salem, Forsyth County, NC
3921 Sunset Ridge Road, Suite 301, Raleigh, NC 27607
Hart & Hickman, P.C.
May 2024
DC340046
Table 1: Site Chronology
DSCA ID No.: DC340046
Chronology of Events
October 2023
Geo-Hydro Engineers, Inc. (Geo-Hydro) completed Report of Phase I Environmental Site Assessment (Phase I ESA) for
the source property. The Phase I ESA identified the following recognized environmental conditions: (1) former printing
operations on the source property from 1987 to 1995 (Salem Printing Co Inc. and Bell's Printing Service); (2) former
petroleum underground storage tanks (USTs) on the north adjacent property (Star Services at 400 Waughtown St); (3) two
off-source property dry-cleaner listings to the northeast and northwest (State Dry Cleaners at 332 Waughtown St and
Farrington N S Co/Klean-Rite Cleaners at 423 Waughtown St); and (4) a machine and paint shop on the northeast adjacent
property (Waughtown Machine and Paint Shop/Southern Raines Customs Welding & Metal Fabrication at 412
Waughtown St). As discussed below, Geo-Hydro later identified the N.S. Farrington & Co dry-cleaning solvent
distribution facility on the source property as an REC.
November to December
2023
Geo-Hydro completed a Report of Limited Phase II Environmental Site Investigation Report. The report documented
additional historical research that identified the N.S. Farrington & Co dry-cleaning solvent distribution facility on the
source property as an REC. The assessment included collection of two groundwater samples from temporary monitoring
wells (TMW-1 and TMW-2), collection of soil samples from the temporary monitoring well borings (SB-1 and SB-2), and
collection of two sub-slab gas samples (SG-1) inside the former distribution center building.
January 2024 The N.S. Farrington & Co. site (DC340046) was certified into the DSCA Program.
February to April 2024
Hart & Hickman, PC (H&H) performed initial site assessment activities. Soil samples were collected from 10 soil borings
(SB-3 through SB-12). Six permanent 2-inch Type II monitoring wells (MW-1 through MW-6) were installed and
sampled. Four co-located sub-slab gas (SS-1 through SS-4) and indoor air (IA-1 through IA-4) samples were collected in
the former distribution center building. H&H also completed a public outreach/water supply well survey form mailing.
Instructions: Brief description of all significant events that have occurred since a problem was
suspected at the facility. Commence with the first date a problem was suspected and continue through
the most recent activity described in the current report.
Date
ADT 1
Page 1 of 1
Table 2: Analytical Data for Soil
DSCA ID No.: DC340046
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SB-1 3.5-5 11/02/23 <0.0080 <0.0080 <0.0080 <0.0080 <0.0080 0.017 <0.0080 <0.0080 <0.0080 <0.016 <0.016 <0.16 <0.032
SB-2 23.5-25 11/02/23 <0.0087 <0.0087 <0.0087 <0.0087 <0.0087 0.40 <0.0087 <0.0087 <0.0087 <0.017 <0.017 <0.17 <0.035
0-1 04/03/24 <0.0022 <0.0022 <0.0022 <0.0044 <0.0044 0.048 <0.0022 <0.0022 <0.0022 <0.011 <0.0066 <0.11 <0.022
9-11 04/03/24 <0.0020 <0.0020 <0.0020 <0.0041 <0.0041 7.3 <0.0020 <0.0020 <0.0020 <0.010 <0.0061 <0.10 <0.020
0-1 04/04/24 <0.0030 <0.0030 <0.0030 <0.0060 <0.0060 36 <0.0030 <0.0030 <0.0030 <0.015 <0.0090 <0.15 <0.030
4-5 04/04/24 <0.0021 <0.0021 <0.0021 <0.0043 <0.0043 0.022 <0.0021 <0.0021 <0.0021 <0.011 <0.0064 <0.11 <0.021
0-1 04/04/24 <0.0021 <0.0021 <0.0021 <0.0043 <0.0043 9.0 <0.0021 <0.0021 <0.0021 <0.011 <0.0064 <0.11 <0.021
4-5 04/04/24 <0.0024 <0.0024 <0.0024 <0.0049 <0.0049 0.023 <0.0024 <0.0024 <0.0024 <0.012 <0.0073 <0.12 <0.024
0-1 04/04/24 <0.0024 <0.0024 <0.0024 <0.0047 <0.0047 6.7 <0.0024 <0.0024 <0.0024 <0.012 <0.0071 <0.12 <0.024
1-2 04/04/24 <0.0022 <0.0022 <0.0022 <0.0045 <0.0045 0.15 <0.0022 <0.0022 <0.0022 <0.011 <0.0067 <0.11 <0.022
0-1 04/04/24 <0.0022 <0.0022 <0.0022 <0.0044 <0.0044 0.28 <0.0022 <0.0022 <0.0022 <0.011 <0.0066 <0.11 <0.022
1-2 04/04/24 <0.0026 <0.0026 <0.0026 <0.0052 <0.0052 0.030 <0.0026 <0.0026 <0.0026 <0.013 <0.0078 <0.13 <0.026
0-1 04/01/24 <0.0028 <0.0028 <0.0028 <0.0056 <0.0056 0.026 <0.0028 <0.0028 <0.0028 <0.014 <0.0084 <0.14 <0.028
7.5-10 04/01/24 <0.0022 <0.0022 <0.0022 <0.0043 <0.0043 0.015 <0.0022 <0.0022 <0.0022 <0.011 <0.0065 <0.11 <0.022
0-1 04/01/24 <0.0031 <0.0031 <0.0031 <0.0061 <0.0061 0.028 <0.0031 <0.0031 <0.0031 <0.015 <0.0092 <0.15 <0.031
2.5-5 04/01/24 <0.0028 <0.0028 <0.0028 <0.0057 <0.0057 0.0021 J <0.0028 <0.0028 <0.0028 <0.014 <0.0085 <0.14 <0.028
0-1 04/01/24 <0.0022 <0.0022 <0.0022 <0.0044 <0.0044 0.37 <0.0022 <0.0022 <0.0022 <0.011 <0.0066 <0.11 <0.022
1-2.5 04/01/24 <0.0023 <0.0023 <0.0023 <0.0046 <0.0046 0.32 <0.0023 <0.0023 <0.0023 <0.012 <0.0069 0.086 J 0.0017 J
0-1 04/02/24 <0.0022 <0.0022 <0.0022 <0.0044 <0.0044 0.019 <0.0022 <0.0022 <0.0022 <0.011 <0.0066 0.083 J <0.022
15-17 04/02/24 <0.0022 <0.0022 <0.0022 <0.0044 <0.0044 0.27 <0.0022 <0.0022 <0.0022 <0.011 <0.0066 <0.11 <0.022
0-1 04/02/24 <0.0022 <0.0022 <0.0022 <0.0044 <0.0044 35 <0.0022 <0.0022 <0.0022 <0.011 <0.0066 <0.11 <0.022
25-27 04/02/24 <0.0021 <0.0021 <0.0021 <0.0042 <0.0042 0.22 <0.0021 <0.0021 <0.0021 <0.010 <0.0063 <0.10 <0.021
1.2 13 6.1 49 2.1 17 990 15 0.87 0.061 120 14,000 58
0.010 0.41 13 0.090 0.39 0.0063 8.3 0.62 0.021 0.00021 9.9 25 0.025
[mg/kg]
Residential PSRG
Protection of Groundwater PSRG
Notes:
1. PSRGs are the North Carolina Department of Environmental Quality Preliminary Soil Remediation Goals, dated February 2024.
2. Bold concentrations exceed at least one of the listed PSRGs.
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SB-12
SB-11
SB-10
ADT 2
Page 1 of 1
Table 3: Analytical Data for Sub-slab Gas
DSCA ID No.: DC340046
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SSG-1 6 6 4 min 10/31/23 39.6 <15.9 49.9 <14.4 107 11,500,000 127 <15.9 131 <10.2 3,090 108 47.0 59.9 <94.3 485 128
SSG-2 6 6 5 min 10/31/23 58.5 <7.93 245 <7.21 <33.0 6,860,000 633 <7.93 420 <5.11 1,310 80.3 24.9 269 76.0 60.4 233
SS-1 6 6 10 min 03/01/24 NA <7,900 NA NA NA 42,000,000 NA <7,900 <11,000 <5,100 NA NA NA NA NA NA NA
SS-2 6 6 10 min 03/01/24 NA <7,900 NA NA NA 31,000,000 NA <7,900 <11,000 <5,100 NA NA NA NA NA NA NA
SS-3 6 6 10 min 03/01/24 NA <7,900 NA NA NA 11,000,000 NA <7,900 <11,000 <5,100 NA NA NA NA NA NA NA
SS-4 6 6 10 min 03/01/24 NA <7,900 NA NA NA 5,700,000 NA <7,900 <11,000 <5,100 NA NA NA NA NA NA NA
12 280 37 360 2.8 280 35,000 280 14 5.6 700 NE 4,900 42,000 NE NE 2,800
160 3,500 490 4,700 36 3,500 440,000 3,500 180 280 8,800 NE 61,000 530,000 NE NE 35,000
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Notes:
1. NA = Not Analyzed; NE = Not Established
2. North Carolina Department of Environmental Quality (DEQ) Residential and Non-Residential Soil Gas Screening Levels (SGSLs), dated February 2024, are provided for reference.
1 Indicate "G" for grab sample or for longer samples indicate the number of hours followed by "h".
Residential Soil Gas Screening Level
Non-Residential Soil Gas Screening Level
ADT 3
Page 1 of 2
Table 3(1): Analytical Data for Sub-slab Gas (User Specified Chemicals)
DSCA ID No.: DC340046
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SSG-1 6 6 4 min 10/31/23 160 <61.5 <21.8 3,940 2,050
SSG-2 6 6 5 min 10/31/23 959 109 30.7 196 76.1
SS-1 6 6 10 min 03/01/24 NA NA NA NA NA
SS-2 6 6 10 min 03/01/24 NA NA NA NA NA
SS-3 6 6 10 min 03/01/24 NA NA NA NA NA
SS-4 6 6 10 min 03/01/24 NA NA NA NA NA
4,900 1,400 35,000 420 420
61,000 18,000 440,000 5,300 5,300
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Notes:
1. NA = Not Analyzed; NE = Not Established
2. North Carolina Department of Environmental Quality (DEQ) Residential and Non-Residential Soil Gas Screening Levels (SGSLs), dated February 2024, are provided for reference.
Residential Soil Gas Screening Level
Non-Residential Soil Gas Screening Level
1 Indicate "G" for grab sample or for longer samples indicate the number of hours followed by "h".
ADT 3(1)
Page 2 of 2
Table 5: Analytical Data for Indoor and Outdoor Air
DSCA ID No.: DC340046
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IA-1 02/26/24 F SU 8h <0.14 990 <0.14 0.24 <0.089
IA-2 02/26/24 F SU 8h <0.14 1,100 <0.14 0.24 <0.089
IA-3 02/26/24 F SU 8h <0.14 1,100 <0.14 0.29 <0.089
IA-4 02/26/24 F SU 8h <0.14 1,100 <0.14 0.25 <0.089
-- 8.3 -- -- -- 8.3 -- 8.3 0.42 0.17 --
-- 35 -- -- -- 35 -- 35 1.8 2.8 --
Notes:
1 Indicate "F" for former or current dry-cleaning facility, "AD" for adjacent space, "R" for residence, "C" for commercial not adjacent space. If sample was taken outdoors, leave blank.
2 Indicate "SU" for summa canister, "FC" for flux chambers, "T" for tedlar bags, "P" for passive samplers, "O" for other.
3 Indicate "8h" for 8-hour, "24h" for 24-hour, "G" for grab sample, for other hours indicate the number of hours followed by "h" or "d" for days.
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Non-Residential Indoor Air Screening Level
Notes:
1. NA = Not Analyzed; -- = Not Applicable
2. North Carolina Department of Environmental Quality Residential and Non-Residential Indoor Air Screening Levels, dated February 2024, are provided for reference.
Residential Indoor Air Screening Level
ADT 5
Page 1 of 3
Table 5(2): Additional Data for Indoor and Outdoor Air
DSCA ID No.: DC340046
Attachment:
For any indoor air spaces tested, describe the current use of the space (for example - an ABC liquor store adjacent to the dry-cleaner, a residence approximately 200 feet from the dry-cleaner, etc.):
The former dry-cleaning solvent distribution center was vacant at the time of the February 2024 indoor air sampling event. The source property building consists of a single-occupant warehouse building with
associated office space.
Sampling location map that indicates where all indoor air samples were collected. The map should clearly indicate the names/types of businesses and residence names sampled and in the vicinity of the subject site
that may be of concern.
Is dry-cleaning facility at the site: Operating Pick-up Only Abandoned
If facility is operating, solvents used are: Perc Petroleum Green Earth Other
For the active or former dry-cleaning space, describe the type and location of the air handling/HVAC unit (for example - a shared unit supplying two adjacent spaces; unit located on the roof):
The building is heated/cooled by three HVAC units located along the southern exterior of the building. The warehouse portion of the building is provided additional heat from a ceiling-mounted natural gas heating
unit, located at the rear (eastern portion) of the warehouse.
For any other indoor spaces tested, describe the type and location of the air handling/HVAC unit (for example - a shared unit supplying two adjacent spaces; unit located on the roof):
ADT 5(2)
Page 2 of 3
Table 5(3): Additional Data for Indoor and Outdoor Air
DSCA ID No.: DC340046
Sample ID ame and Address for Sampling Locatio Property Owner Name, Address, and Phone Numbe Tenant Name, Address, and Phones Numbe
IA-1 through
IA-4
Former N.S. Farrington & Co.
1701 Lomond Street
Winston-Salem, NC 27127
Dutch Defense, LLC
c/o David "Trey" Lambert
429 Westover Avenue
Winston-Salem, NC 27104
336-391-7783
N/A - Vacant
ADT 5(3)
Page 3 of 3
Table 6: Monitoring Well Construction Data
DSCA ID No.: DC340046
Well ID Date Installed
(mm/dd/yy)Number of Samples Well Depth
[feet]
Well Diameter
[inch]
Screen Interval
[feet]
Status
(Active/Inactive)
MW-1 04/02/24 1 50 2 40-50 Active
MW-2 04/03/24 1 50 2 40-50 Active
MW-3 04/03/24 1 47 2 37-47 Active
MW-4 04/01/24 1 40 2 30-40 Active
MW-5 04/01/24 1 40 2 30-40 Active
MW-6 04/02/24 1 47 2 37-47 Active
ADT 6
Page 1 of 1
Table 7: Groundwater Elevation Data
DSCA ID No.: DC340046
Groundwater
Sampling Point
Sampling Date
(mm/dd/yy)
TOC Elevation
[feet]
Depth to Water
[feet bgs]
Groundwater
Elevation
[feet]
Depth to NAPL
[feet bgs]
NAPL Thickness
[feet]
Corrected*
Groundwater
Elevation [feet]
MW-1 04/10/24 890.20 40.60 849.60 N/A N/A N/A
MW-2 04/10/24 892.86 43.40 849.46 N/A N/A N/A
MW-3 04/10/24 891.96 41.84 850.12 N/A N/A N/A
MW-4 04/09/24 883.04 31.76 851.28 N/A N/A N/A
MW-5 04/09/24 882.96 32.46 850.50 N/A N/A N/A
MW-6 04/09/24 887.03 37.85 849.18 N/A N/A N/A
Note:
1. N/A = Not Applicable
ADT 7
Page 1 of 1
Table 8: Analytical Data for Groundwater
DSCA ID No.: DC340046
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TMW-1 11/02/23 <0.0250 <0.0250 <0.0250 <0.0250 <0.0250 2.81 <0.0250 <0.0250 <0.0250 <0.0250 <0.0250 <0.0250
TMW-2 11/02/23 <0.2 <0.2 <0.2 <0.2 <0.2 24 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2
MW-1 04/10/24 <0.50 <0.50 <0.50 <0.50 <1.0 V-05 34 <0.50 <0.50 <0.50 <1.0 <1.50 <1.0
MW-2 04/10/24 <0.40 <0.40 <0.40 <0.40 <0.80 V-05 27 <0.40 <0.40 <0.40 <0.80 <1.20 <0.80
MW-3 04/10/24 <0.10 <0.10 <0.10 <0.10 <0.20 V-05 8.9 <0.10 <0.10 <0.10 <0.20 <0.30 <0.20
MW-4 04/09/24 <0.0040 <0.0040 <0.0040 <0.0040 <0.0080 V-05 0.20 <0.0040 <0.0040 <0.0040 <0.0080 <0.0120 <0.0080
MW-5 04/09/24 <0.0050 0.0028 J <0.0050 <0.0050 <0.010 V-05 0.40 <0.0050 <0.0050 <0.0050 <0.010 <0.0150 0.0067 J
MW-6 04/09/24 <0.10 <0.10 <0.10 <0.10 <0.20 V-05 10 <0.10 <0.10 <0.10 <0.20 <0.30 0.045 J
0.001 0.07 0.6 0.02 0.006 0.0007 0.6 0.1 0.003 0.00003 0.5 0.07NC 2L Standard
Notes:
1. NC 2L Standard = Title 15A NCAC 2L Groundwater Standard or Interim Maximum Allowable Concentration (IMAC) dated April 2022.
2. Bold indicates value exceeds NC 2L Standard.
3. J = Estimated concentration between laboratory reporting limit and method detection limit; V-05 = Continuing calibration verification did not meet method specifications and was biased on the low
side for this compound.
Gr
o
u
n
d
w
a
t
e
r

S
a
m
p
l
i
n
g

P
o
i
n
t
Sa
m
p
l
i
n
g

D
a
t
e

(
m
m
/
d
d
/
y
y
)
[mg/L]
ADT 8
Page 1 of 1
Table 10: Water Well(s) Survey Data
DSCA ID No.: DC340046
Ref. No./
Well ID
Sampling Location
Name and Address
Property Owner
Name, Address, and
Phone Number
Tenant Name,
Address, and Phone
Number
Distance
from
Source
[feet]
Well
Depth
[feet]
Screen
Interval
[feet]
Use of Well Source of Well
Identification
Direction
(downgradient,
upgradient, etc.,
to source area)
Status
(Active/
Inactive)
WSW-1
1500 Lomond Street
Winston-Salem, NC
27127
Mario Lopez & Teresa
Ortega
1500 Lomond Street
Winston-Salem, NC 27127
[phone]
Same as Property Owner 460 Unknown Unknown
Assumed out of
use - property
connected to
public water
service
H&H 2024 Mailing Cross-gradient Inactive
ADT 10
Page 1 of 1
Table 12: Analytical Data for Natural Attenuation Parameters
DSCA ID No.: DC340046
Sa
m
p
l
i
n
g

D
a
t
e

(
m
m
/
d
d
/
y
y
)
Di
s
s
o
l
v
e
d

o
x
y
g
e
n

(
D
O
)
Ni
t
r
a
t
e
Su
l
f
a
t
e
Ma
j
o
r

C
a
t
i
o
n
s
Me
t
h
a
n
e
Fe
r
r
o
u
s

I
r
o
n
Ox
i
d
a
t
i
o
n

r
e
d
u
c
t
i
o
n

po
t
e
n
t
i
a
l

(
O
R
P
)
Al
k
a
l
i
n
i
t
y
Ch
l
o
r
i
d
e

(
o
p
t
i
o
n
a
l
)
Co
n
d
u
c
t
i
v
i
t
y
pH Te
m
p
e
r
a
t
u
r
e
To
t
a
l

o
r
g
a
n
i
c

c
a
r
b
o
n

(T
O
C
)
Et
h
a
n
e
Et
h
e
n
e
Units mg/L mg/L mg/L mg/L mg/L mg/L mV mg/L mg/L μs/cm2 std unit ° C mg/L mg/L mg/L
MW-1 4/10/2024 7.31 NA NA NA NA NA 56.1 NA NA 64.9 4.96 19.0 NA NA NA
MW-2 4/10/2024 6.58 NA NA NA NA NA 56.9 NA NA 128.7 4.83 18.5 NA NA NA
MW-3 4/10/2024 6.49 NA NA NA NA NA 49.1 NA NA 225.1 4.83 17.7 NA NA NA
MW-4 4/9/2024 5.58 NA NA NA NA NA 235.3 NA NA 123.9 4.72 15.9 NA NA NA
MW-5 4/9/2024 6.81 NA NA NA NA NA 231.4 NA NA 82.8 5.24 16.7 NA NA NA
MW-6 4/9/2024 6.93 NA NA NA NA NA 277.2 NA NA 87.4 4.76 18.1 NA NA NA
Sa
m
p
l
e

I
D
Notes:
1. NA = Not Analyzed
ADT 12
Page 1 of 1
SB-2/TMW-2
SB-1/TMW-1SB-9
SB-10
SB-8
MW-5
MW-4
MW-6
MW-2/SB-2
MW-1/SB-1
MW-3/SB-3
6.3
0.63
0.063
?
?
?
?
?
?
?
?
?
?
?
?
0.63
0.063
6.3
LEGEND
SOURCE PROPERTY BOUNDARY
PARCEL LINE
FENCE LINE
MONITORING WELL
CO-LOCATED GROUNDWATER AND SOIL
SAMPLE
SOIL BORING
PCE CONCENTRATION (mg/kg)
(SAMPLE DEPTH FT BGS)
PCE CONCENTRATION <0.063
PCE CONCENTRATION >0.063 AND <0.63
PCE CONCENTRATION >0.63 AND <6.3
PCE CONCENTRATION >6.3
NOTES:
1.BASE DATA OBTAINED FROM FORSYTH COUNTY GIS, 2024.
2.SAMPLES SB-1 AND SB-2 WERE COLLECTED BY
GEO-HYDRO ENGINEERS, INC. IN NOVEMBER 2023.
SAMPLES SB-3 THROUGH SB-12 WERE COLLECTED BY H&H
IN APRIL 2024.
3.PCE WAS THE ONLY CONSTITUENT DETECTED ABOVE
PSRGs.
4.PCE = TETRACHLOROETHYLENE
mg/kg = MILLIGRAMS PER KILOGRAM
FT BGS = FEET BELOW GROUND SURFACE
5.BOLD VALUES EXCEED PROTECTION OF GROUNDWATER
PSRGs.
6.J FLAG DENOTES ESTIMATED CONCENTRATIONS
BETWEEN LABORATORY REPORTING LIMIT AND METHOD
DETECTION LIMIT.
7.LOWEST PSRG FOR PCE IS 0.0063 mg/kg. A CONTOUR FOR
0.0063 mg/kg IS NOT SHOWN DUE TO INSUFFICIENT DATA.
REVISION NO. 0
JOB NO. DS0-185
DATE: 5-6-24
ATTACHMENT NO. 2
3921 Sunset Ridge Road, Suite 301
Raleigh, North Carolina 27607
919-847-4241(p) 919-847-4261(f)
License # C-1269 / #C-245 Geology
N.S. FARRINGTON & CO.
DSCA SITE ID: DC340046
1701 LOMOND STREET
WINSTON-SALEM, FORSYTH COUNTY
SOIL CONTAMINANT CONCENTRATION &
ISOCONCENTRATION MAP
MW-2/SB-12
MW-1/SB-11
SB-4 SB-5
SB-6
SB-7
0.017 (3.5-5')
0.40 (23.5-25')
0.048 (0-1')
7.3 (9-11')
36 (0-1')
0.022 (4-5')
9.0 (0-1')
0.023 (4-5')
6.7 (0-1')
0.15 (1-2')
0.28 (0-1')
0.030 (1-2')
0.026 (0-1')
0.015 (7.5-10')
0.028 (0-1')
0.0021J (2.5-5')
0.37 (0-1')
0.32 (1-2.5')
0.019 (0-1')
0.27 (15-17')
35 (0-1')
0.22 (25-27')
0.40 (23.5-25')
COMMERCIAL
RESIDENCE
RESIDENCE
RESIDENCE
EXTERIOR
LOADING DOCK
A&A TRANSMISSION
(FORMER GAS STATION)
TIENDA
MEXICANA JAZMINE
SOUTHERN RAINES
CUSTOMS WELDING &
METAL FABRICATION
(FORMER MACHINE AND
PAINT SHOP)
LO
M
O
N
D

S
T
R
E
E
T
WAUG
H
T
O
W
N

S
T
R
E
E
T
ALLE
Y
W
A
Y
S:
\
A
A
A
-
M
a
s
t
e
r

P
r
o
j
e
c
t
s
\
D
S
C
A

-

D
S
0
\
D
S
0
-
1
8
5

N
.
S
.

F
a
r
r
i
n
g
t
o
n
\
R
e
p
o
r
t
s
\
2
0
2
4
-
0
4

P
A
R
\
F
i
g
u
r
e
s
\
D
C
3
4
0
0
4
6
_
2
0
2
4
0
3
0
6
.
d
w
g
,

A
T
T

2
,

5
/
2
8
/
2
0
2
4

1
0
:
1
7
:
3
2

A
M
,

s
h
a
y
n
e
s
890
900
880
890
890
880
890
88
0
880
88
0
880
870
870
880
880
900
900
LEGEND
SOURCE PROPERTY BOUNDARY
PARCEL LINE
FENCE LINE
TOPOGRAPHIC CONTOUR ( FT MSL)
MONITORING WELL
TEMPORARY MONITORING WELL
REVISION NO. 0
JOB NO. DS0-185
DATE: 5-6-24
ATTACHMENT NO. 7
3921 Sunset Ridge Road, Suite 301
Raleigh, North Carolina 27607
919-847-4241(p) 919-847-4261(f)
License # C-1269 / #C-245 Geology
N.S. FARRINGTON & CO.
DSCA SITE ID: DC340046
1701 LOMOND STREET
WINSTON-SALEM, FORSYTH COUNTY
MW-2
MW-1
MW-3
TMW-2
TMW-1
MW-6
MW-5
MW-4
LO
M
O
N
D

S
T
R
E
E
T
COMMERCIAL
A&A TRANSMISSION
(FORMER GAS STATION)
TIENDA
MEXICANA
JAZMINE
WAUG
H
T
O
W
N

S
T
R
E
E
T
ALLE
Y
W
A
Y
SOUTHERN RAINES CUSTOMS
WELDING & METAL FABRICATION
(FORMER MACHINE AND PAINT SHOP)
COMMERCIAL
WOO
D

S
T
R
E
E
T

S
E
RESIDENTIAL
CE
N
T
E
R

S
T
R
E
E
T
FORMER STATE DRY
CLEANERS
RESIDENTIAL
RESIDENTIAL
FA
Y
E
T
T
E
V
I
L
L
E

S
T
R
E
E
T

S
E
NC

H
W
Y

5
2

O
F
F
-
R
A
M
P
COMMERCIAL
COMMERCIAL
NOTES:
1.AERIAL IMAGERY OBTAINED FROM NC ONEMAP, 2022.
2.BASE DATA OBTAINED FROM FORSYTH COUNTY GIS, 2024.
MONITORING WELL LOCATION MAP
880
FORMER KLEAN-RITE CLEANERS
(ESTIMATED LOCATION)
RESIDENTIAL
RESIDENTIAL
S:
\
A
A
A
-
M
a
s
t
e
r

P
r
o
j
e
c
t
s
\
D
S
C
A

-

D
S
0
\
D
S
0
-
1
8
5

N
.
S
.

F
a
r
r
i
n
g
t
o
n
\
R
e
p
o
r
t
s
\
2
0
2
4
-
0
4

P
A
R
\
F
i
g
u
r
e
s
\
D
C
3
4
0
0
4
6
_
2
0
2
4
0
3
0
6
.
d
w
g
,

A
T
T

4
,

5
/
2
8
/
2
0
2
4

1
0
:
2
2
:
2
4

A
M
,

s
h
a
y
n
e
s
849.5
850
850.5
851
849.
5
850
850.
5
851
LEGEND
SOURCE PROPERTY BOUNDARY
PARCEL LINE
FENCE LINE
MONITORING WELL
GROUNDWATER ELEVATION (FT MSL)
GROUNDWATER ELEVATION CONTOUR
(FT MSL)
INFERRED GROUNDWATER FLOW DIRECTION
NOTES:
1.BASE DATA OBTAINED FROM FORSYTH COUNTY GIS, 2024.
2.GROUNDWATER MEASUREMENTS COLLECTED BY H&H ON
4/9/2024.
3.FT MSL = FEET ABOVE MEAN SEA LEVEL
REVISION NO. 0
JOB NO. DS0-185
DATE: 5-6-24
ATTACHMENT NO. 6
3921 Sunset Ridge Road, Suite 301
Raleigh, North Carolina 27607
919-847-4241(p) 919-847-4261(f)
License # C-1269 / #C-245 Geology
N.S. FARRINGTON & CO.
DSCA SITE ID: DC340046
1701 LOMOND STREET
WINSTON-SALEM, FORSYTH COUNTY
GROUNDWATER GRADIENT MAP
MW-2
MW-1
MW-3
MW-6
MW-5
MW-4
(850.12)
850
(850.12)
(849.46)
(849.60)
(849.18)
(850.50)
(851.28)
COMMERCIAL
RESIDENCE
RESIDENCE
RESIDENCE
A&A TRANSMISSION
(FORMER GAS STATION)
TIENDA
MEXICANA JAZMINE
SOUTHERN RAINES
CUSTOMS WELDING &
METAL FABRICATION
(FORMER MACHINE AND
PAINT SHOP)
LO
M
O
N
D

S
T
R
E
E
T
WAUG
H
T
O
W
N

S
T
R
E
E
T
ALLE
Y
W
A
Y
S:
\
A
A
A
-
M
a
s
t
e
r

P
r
o
j
e
c
t
s
\
D
S
C
A

-

D
S
0
\
D
S
0
-
1
8
5

N
.
S
.

F
a
r
r
i
n
g
t
o
n
\
R
e
p
o
r
t
s
\
2
0
2
4
-
0
4

P
A
R
\
F
i
g
u
r
e
s
\
D
C
3
4
0
0
4
6
_
2
0
2
4
0
3
0
6
.
d
w
g
,

A
T
T

6
,

5
/
2
8
/
2
0
2
4

1
0
:
1
0
:
5
5

A
M
,

s
h
a
y
n
e
s
?
?
?
?
0.7
7.0
(2.81)
(24)
(34)
(27)
(8.9)
(0.20)
(0.40)
(10)
LEGEND
SOURCE PROPERTY BOUNDARY
PARCEL LINE
FENCE LINE
MONITORING WELL
TEMPORARY MONITORING WELL
PCE CONCENTRATION (mg/L)
PCE CONCENTRATION <0.7
PCE CONCENTRATION >0.7 AND <7.0
PCE CONCENTRATION >7.0
NOTES:
1.BASE DATA OBTAINED FROM FORSYTH COUNTY GIS, 2024.
2.TEMPORARY MONITORING WELLS TMW-1 AND TMW-2
WERE INSTALLED AND SAMPLED BY GEO-HYDRO
ENGINEERS, INC. IN NOVEMBER 2023. PERMANENT
MONITORING WELLS MW-1 THROUGH MW-6 WERE
INSTALLED AND SAMPLED BY H&H IN APRIL 2024.
3.PCE = TETRACHLOROETHYLENE
mg/L = MILLIGRAMS PER LITER
4.PCE WAS THE ONLY CONSTITUENT DETECTED ABOVE NC
2L STANDARDS.
5.NC 2L STANDARD FOR PCE IS 0.0007 mg/L. CONTOURS FOR
0.0007, 0.007, OR 0.07 mg/L ARE NOT SHOWN DUE TO
INSUFFICIENT DATA.
REVISION NO. 0
JOB NO. DS0-185
DATE: 5-6-24
ATTACHMENT NO. 7
3921 Sunset Ridge Road, Suite 301
Raleigh, North Carolina 27607
919-847-4241(p) 919-847-4261(f)
License # C-1269 / #C-245 Geology
N.S. FARRINGTON & CO.
DSCA SITE ID: DC340046
1701 LOMOND STREET
WINSTON-SALEM, FORSYTH COUNTY
GROUNDWATER PCE
ISOCONCENTRATION MAP
MW-2
MW-1
MW-3
TMW-2
TMW-1
MW-6
MW-5
MW-4
LO
M
O
N
D

S
T
R
E
E
T
(8.9)
COMMERCIAL
RESIDENCE
RESIDENCE
RESIDENCE
A&A TRANSMISSION
(FORMER GAS STATION)
TIENDA
MEXICANA
JAZMINE
WAUG
H
T
O
W
N

S
T
R
E
E
T
ALLE
Y
W
A
Y
RESIDENCE
RESIDENCE
SOUTHERN RAINES CUSTOMS
WELDING & METAL FABRICATION
(FORMER MACHINE AND PAINT SHOP)
COMMERCIAL
COMMERCIAL
WOO
D

S
T
R
E
E
T

S
E
RESIDENTIAL
CE
N
T
E
R

S
T
R
E
E
T
FORMER KLEAN-RITE CLEANERS
(ESTIMATED LOCATION)
FORMER STATE DRY
CLEANERS
RESIDENTIAL
RESIDENTIAL
FA
Y
E
T
T
E
V
I
L
L
E

S
T
R
E
E
T

S
E
NC

H
W
Y

5
2

O
F
F
-
R
A
M
P
COMMERCIAL
COMMERCIAL
S:
\
A
A
A
-
M
a
s
t
e
r

P
r
o
j
e
c
t
s
\
D
S
C
A

-

D
S
0
\
D
S
0
-
1
8
5

N
.
S
.

F
a
r
r
i
n
g
t
o
n
\
R
e
p
o
r
t
s
\
2
0
2
4
-
0
4

P
A
R
\
F
i
g
u
r
e
s
\
D
C
3
4
0
0
4
6
_
2
0
2
4
0
3
0
6
.
d
w
g
,

A
T
T

7
,

5
/
2
8
/
2
0
2
4

9
:
2
9
:
3
5

A
M
,

s
h
a
y
n
e
s
LO
M
O
N
D

S
T
R
E
E
T
SSG-1
SSG-2
(6.637)
(1.936)
(2.300)
(5.089)
(19.65)
(30.33)
(3,033)
(995.0)
(911.1)
(160.7)
(20.42)
(43.34)
(133.7)
(109.6)
(542.5)
(1,800)
(601.3)
(1,033)
(1,454)
(4,185)
(391.8)(OR)
(4,443)
(OR)
(OR)
(OR)
(OR)
(2,061)
(1,558)
(3,264)
(1,863)
(351.9)
92.78
(602.9)
89.92
(381.1)
173.2
(1.815)
(57.53)
318.7
(1,925)
(3,129)
(9.850)
(15.39)
(14.14)
(216.0)
(1,999)
(3.850)
SS-1
SS-2
SS-3
SS-4
WAUGH
T
O
W
N

S
T
R
E
E
T
LEGEND
SOURCE PROPERTY BOUNDARY
PARCEL LINE
FENCE LINE
SUB-SLAB GAS SAMPLE
PPBRAE POINT
PPBRAE VOC CONCENTRATION (ppm)
>10,000 ppm PPBRAE VOC
CONCENTRATION
1,000-10,000 ppm PPBRAE VOC
CONCENTRATION
100-1,000 ppm PPBRAE VOC
CONCENTRATION
<100 ppm PPBRAE VOC CONCENTRATION
SS-3 (3/1/24)
PCE 11,000,000
RES CR 1.2E-01
RES HI 30,000
NON-RES CR 8.9E-03
NON-RES HI 2,400
SAMPLE ID & DATE
CONCENTRATION
(μg/m³)CONSTITUENT
CALCULATED
RISKS
REVISION NO. 0
JOB NO. DS0-185
DATE: 5-6-24
3921 Sunset Ridge Road, Suite 301
Raleigh, North Carolina 27607
919-847-4241(p) 919-847-4261(f)
License # C-1269 / #C-245 Geology
N.S. FARRINGTON & CO.
DSCA SITE ID: DC340046
1701 LOMOND STREET
WINSTON-SALEM, FORSYTH COUNTY
(911.1)
ATTACHMENT NO. 13A/14A
SUB-SLAB GAS CONTAMINANT
CONCENTRATION AND PPBRAE SURVEY MAP
NOTES:
1.PPBRAE SURVEY CONDUCTED ON 2/27/24 AND 2/28/24.
2.EXTERIOR PPBRAE POINTS WERE NOT USED IN
CONTOURING.
3.SUB-SLAB GAS SAMPLES SS-1 THROUGH SS-4
COLLECTED BY H&H ON 3/1/24. SAMPLES SSG-1 AND
SSG-2 COLLECTED BY GEO-HYDRO ENGINEERS, INC. ON
10/31/23.
4.PCE = TETRACHLOROETHYLENE
TCE = TRICHLOROETHYLENE
RES CR = RESIDENTIAL CARCINOGENIC RISK
RES HI = RESIDENTIAL HAZARD INDEX
NON-RES CR = NON-RESIDENTIAL CARCINOGENIC RISK
NON-RES HI = NON-RESIDENTIAL HAZARD INDEX
µg/m3 = MICROGRAMS PER CUBIC METER
ppm = PARTS PER MILLION
VOC = TOTAL VOLATILE ORGANIC COMPOUNDS
5.RED RISK VALUES EXCEED THE DSCA PROGRAM
ACCEPTABLE LEVELS OF 1.0E-04 FOR CARCINOGENIC
RISK OR 1.0 FOR HAZARD INDEX.
6.BLUE SYMBOLS/IDs INDICATE SAMPLE EXCEEDS
ACCEPTABLE RESIDENTIAL AND NON-RESIDENTIAL RISK
LEVELS.
7.BOXES ONLY SHOW CONCENTRATIONS OF PCE AND
DETECTED DEGRADATION PRODUCTS, BUT NOTE THAT
ADDITIONAL ANALYTES WERE DETECTED AND INCLUDED
IN RISK CALCULATIONS. FOR ADDITIONAL DETAILS,
REFER TO ADT 3.
SS-3 (3/1/24)
PCE 11,000,000
RES CR 3.1E-02
RES HI 7,900
NON-RES CR 2.3E-03
NON-RES HI 630
SS-1 (3/1/24)
PCE 42,000,000
RES CR 1.2E-01
RES HI 30,000
NON-RES CR 8.9E-03
NON-RES HI 2,400
SS-2 (3/1/24)
PCE 31,000,000
RES CR 8.6E-02
RES HI 22,000
NON-RES CR 6.6E-03
NON-RES HI 1,800
SS-4 (3/1/24)
PCE 5,700,000
RES CR 1.6E-02
RES HI 4,100
NON-RES CR 1.2E-03
NON-RES HI 330
SSG-1 (10/31/23)
PCE 11,500,000
TCE 131
RES CR 3.2E-02
RES HI 8,300
NON-RES CR 2.4E-03
NON-RES HI 660
SSG-2 (10/31/23)
PCE 6,860,000
TCE 420
RES CR 1.9E-02
RES HI 4,900
NON-RES CR 1.5E-03
NON-RES HI 390
SSG-1
SSG-2
SS-1
SS-2
SS-3
SS-4
EXTERIOR LOADING DOCK
S:
\
A
A
A
-
M
a
s
t
e
r

P
r
o
j
e
c
t
s
\
D
S
C
A

-

D
S
0
\
D
S
0
-
1
8
5

N
.
S
.

F
a
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t
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p
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s
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2
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4

P
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4
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4
6
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4
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3
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6
.
d
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,

A
T
T

1
3
A
-
1
4
A
,

5
/
2
1
/
2
0
2
4

3
:
4
7
:
0
0

P
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s
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s
LO
M
O
N
D

S
T
R
E
E
T
IA-1
IA-3
IA-2
IA-4
WAUGH
T
O
W
N

S
T
R
E
E
T
LEGEND
SOURCE PROPERTY BOUNDARY
PARCEL LINE
FENCE LINE
INDOOR AIR SAMPLE
NOTES:
1.PCE = TETRACHLOROETHYLENE
TCE = TRICHLOROETHYLENE
RES CR = RESIDENTIAL CARCINOGENIC RISK
RES HI = RESIDENTIAL HAZARD INDEX
NON-RES CR = NON-RESIDENTIAL CARCINOGENIC RISK
NON-RES HI = NON-RESIDENTIAL HAZARD INDEX
μg/m³ = MICROGRAMS PER CUBIC METER
2.PCE AND OTHER DETECTED CONSTITUENTS ARE SHOWN.
3.RED RISK VALUES EXCEED THE DSCA PROGRAM
ACCEPTABLE LEVELS OF 1.0E-04 FOR CARCINOGENIC
RISK OR 1.0 FOR HAZARD INDEX.
4.BLUE SYMBOLS/IDs INDICATE SAMPLE EXCEEDS
ACCEPTABLE RESIDENTIAL AND NON-RESIDENTIAL RISK
LEVELS.
IA-1 (2/26/24)
PCE 990
TCE 0.24
RES CR 9.2E-05
RES HI 24
NON-RES CR 2.1E-05
NON-RES HI 5.7
SAMPLE ID & DATE
CONCENTRATION
(μg/m³)
CONSTITUENT
CALCULATED
RISKS
REVISION NO. 0
JOB NO. DS0-185
DATE: 5-6-24
ATTACHMENT NO. 13B/14B
3921 Sunset Ridge Road, Suite 301
Raleigh, North Carolina 27607
919-847-4241(p) 919-847-4261(f)
License # C-1269 / #C-245 Geology
N.S. FARRINGTON & CO.
DSCA SITE ID: DC340046
1701 LOMOND STREET
WINSTON-SALEM, FORSYTH COUNTY
INDOOR AIR CONTAMINANT
CONCENTRATION MAP
IA-1 (2/26/24)
PCE 990
TCE 0.24
RES CR 9.2E-05
RES HI 24
NON-RES CR 2.1E-05
NON-RES HI 5.7
IA-2 (2/26/24)
PCE 1,100
TCE 0.24
RES CR 1.0E-04
RES HI 26
NON-RES CR 2.3E-05
NON-RES HI 6.3
IA-3 (2/26/24)
PCE 1,100
TCE 0.29
RES CR 1.0E-04
RES HI 27
NON-RES CR 2.3E-05
NON-RES HI 6.3
IA-4 (2/26/24)
PCE 1,100
TCE 0.25
RES CR 1.0E-04
RES HI 26
NON-RES CR 2.3E-05
NON-RES HI 6.3 IA-1
IA-3
IA-2
IA-4
EXTERIOR LOADING DOCK
S:
\
A
A
A
-
M
a
s
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r

P
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e
c
t
s
\
D
S
C
A

-

D
S
0
\
D
S
0
-
1
8
5

N
.
S
.

F
a
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p
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s
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2
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4

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4
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6
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d
w
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A
T
T

1
3
B
-
1
4
B
,

5
/
2
1
/
2
0
2
4

3
:
4
6
:
0
8

P
M
,

s
h
a
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s
NOTES:
1.BASE DATA OBTAINED FROM FORSYTH COUNTY GIS, 2024.
2.UTILITY LOCATIONS ARE SHOWN BASED ON THE RESULTS
OF A PUBLIC AND PRIVATE UTILITY LOCATE ON THE
SOURCE PROPERTY , SITE OBSERVATIONS, AND ON-LINE
CITY OF WINSTON-SALEM RECORDS. HOWEVER, NOTE
THAT UTILITY LINES SHOWN ON THIS MAP MAY NOT BE
COMPREHENSIVE.
REVISION NO. 0
JOB NO. DS0-185
DATE: 5-6-24
ATTACHMENT NO. 16
3921 Sunset Ridge Road, Suite 301
Raleigh, North Carolina 27607
919-847-4241(p) 919-847-4261(f)
License # C-1269 / #C-245 Geology
N.S. FARRINGTON & CO.
DSCA SITE ID: DC340046
1701 LOMOND STREET
WINSTON-SALEM, FORSYTH COUNTY
FACILITY LAYOUT
MW-2
MW-1
MW-3
MW-6
MW-5
MW-4
LEGEND
SOURCE PROPERTY BOUNDARY
PARCEL LINE
FENCE LINE
WATER LINE
GAS LINE
FIBER OPTIC LINE
SANITARY SEWER LINE
OVERHEAD ELECTRIC / FIBER LINE
UNDERGROUND UNKNOWN UTILITY
MONITORING WELL
COMMERCIAL
RESIDENCE
RESIDENCE
RESIDENCE
A&A TRANSMISSION
(FORMER GAS STATION)
TIENDA
MEXICANA JAZMINE
SOUTHERN RAINES
CUSTOMS WELDING &
METAL FABRICATION
(FORMER MACHINE AND
PAINT SHOP)
LO
M
O
N
D

S
T
R
E
E
T
WAUG
H
T
O
W
N

S
T
R
E
E
T
ALLE
Y
W
A
Y
S:
\
A
A
A
-
M
a
s
t
e
r

P
r
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e
c
t
s
\
D
S
C
A

-

D
S
0
\
D
S
0
-
1
8
5

N
.
S
.

F
a
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r
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t
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p
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s
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4

P
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4
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6
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6
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4

1
0
:
2
5
:
3
7

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