RA-6738_33892_CA_RPTS_20220914_AFVR

2725 E. Millbrook Road, Suite 121
Raleigh, North Carolina 27604
Telephone [phone]
Fax [phone]
www.oneatlas.com
September 14, 2022

Ms. Allison Ward
North Carolina Department of Environmental Quality
Division of Waste Management, UST Section
Washington Regional Office
943 Washington Square Mall
Washington, North Carolina 27889

Re: AFVR and Groundwater Sampling Results
Circle K Store #2723471
4940 U.S. Highway 264 West
Wilson, Wilson County, North Carolina
NCDEQ Incident Number 33892
Priority Site Rank: H155A

Dear Ms. Ward:

On behalf of Circle K Stores, Inc. (Formerly The Pantry), ATC Associates of North Carolina, P.C. (ATC)
has prepared this letter report to provide a summary of light non-aqueous phase liquid (LNAPL) recovery
and results of the recent groundwater sampling event performed at the facility. A site vicinity map is
provided as Figure 1 and a site map is provided as Figure 2.

AFVR Event
On May 11, 2022, ATC supervised the performance of an AFVR event at the site to assist in LNAPL
recovery. Prior to the initiation of AFVR activities, depths to LNAPL and groundwater were measured in
monitoring well MW-3. LNAPL was measured in monitoring well MW-3 at a thickness of 0.40 feet. The
AFVR event included a single connection to well MW-3 for a 480-minute period.

A stinger pipe consisting of one-inch flexible hose was used to connect between the truck vacuum line and
the monitoring well. The stinger pipe in monitoring well MW-3 was lowered to an approximate depth of 8
feet below ground surface (bgs). The stinger pipe was adjusted to 10 feet bgs at 0850 and to 12 feet bgs at
0905. The stinger pipe was not adjusted during the remainder of the event. The annuli between the stinger
pipe assembly and the well casing was sealed to minimize vacuum loss. AFVR activities were initiated at
0800 hours. At 1605 hours, the AFVR event concluded.

Throughout the AFVR event, operative parameters from the exhaust stack on the vacuum truck were
measured at 15-minute intervals for the first two hours and at 30-minute intervals for the remaining six
hours. Using a photoionization detector (PID), total volatile organic compound (VOC) readings from the
September 14, 2022
Page 2 of 3
exhaust stack ranged from 130.7 parts per million (ppm) to 159.2 ppm during the event. The truck vacuum
gauge reading registered at 21 inches of mercury throughout the event. It should be noted the monitoring
equipment malfunctioned for the first 2 hours of the event and during the last 90 minutes of the event. An
average readings were used for these time periods.

During the AFVR event, a total of 46 gallons of LNAPL and petroleum-impacted groundwater was
recovered. A copy of the vacuum truck specification is included in Attachment I. Eastern Environmental
Management, LLC of Rocky Mount, North Carolina disposed of the recovered fluid. The disposal manifest
is included in Attachment I.

Using the PID readings of the exhaust stack, air emission calculations indicated approximately 4.82 pounds
(0.90821 gallons) of petroleum vapors were emitted through the exhaust stack. AFVR field measurements
and emissions calculations are provided in Table 1.

Groundwater Sampling
On August 22, 2022, ATC collected a static water level measurements from monitoring wells MW-1,
MW-2, MW-3, MW-5, MW-6, and DW-1. Light non-aqueous phase liquid (LNAPL) was measured in the
monitoring well MW-3 at a thickness of 0.69 feet on this date. Monitoring well MW-2 was dry on this
date. The depth to water measurements were collected using an electronic oil/water interface probe. A
summary of groundwater elevation data is provided in Table 2. A groundwater elevation contour map is
provided as Figure 3. It appears groundwater flow in a north-northwestern direction across the site.

On August 22, 2022, groundwater samples were collected from monitoring wells MW-1, MW-5, MW-6,
and DW-1, following standard sampling protocols. The groundwater samples were collected into
laboratory-approved containers, packed in ice, and delivered under chain-of-custody to SGS North
America, Inc. (SGS) in Scott, Louisiana, for analyses. The groundwater samples collected from the
monitoring wells were analyzed by Environmental Protection Agency (EPA) Method 6200B. Select natural
attenuation measurements are provided in Table 3.

Laboratory analytical results detected dissolved benzene and naphthalene concentrations exceeding the
established 2B x 10 Surface Water Standards in the groundwater sample collected from monitoring well
MW-1. LNAPL was detected in monitoring well MW-3. Other dissolved target compound concentrations
were detected in the other wells sampled; however, the concentrations were below the established 2B x 10
Surface Water Standards. A summary of the groundwater analytical data is provided in Table 4. Dissolved
contaminants of concern are provided on Figure 4. A copy of the laboratory analytical report is included
as Attachment II.
tr&***fl*lry*"#Rt tw September 14,2022
Page 3 of3
rs$ocrAtrs 0a I0irI cAR0ilr{A. P.c
If you have any questions or require additional information, please contact our office at [phone].
Sincerely,
ATC Associates of North Carolina,'\ .-, i\
I i J,,., u rui{&if.irtt*Ut L{}V\Lt*
Maureen Jackson,'P.G.
Senior Project Manager
N.C. Licensed Geologist No. 2312
cc: Mr. Alan Cubberley, Circle K ffi--try

TABLES

TABLE 1
AFVR DATA AND EMISSIONS CALCULATIONS (05/11/2022 EVENT)
CIRCLE K STORE #2723471
4940 U.S. HIGHWAY 264 WEST
WILSON, WILSON COUNTY, NORTH CAROLINA
NCDEQ INCIDENT NO. 33892
AGGRESSIVE FLUID VAPOR RECOVERY EVENT
SITE NAME: Circle K Store #2723471
INCIDENT NUMBER: 33892
AVERAGE DEPTH TO GROUNDWATER: Approximately 8 feet
IDENTIFY THE WELL AND THE I.D. OF EACH WELL USED FOR AFVR: MW-3
PROVIDE BLOWER SPECIFICATIONS OF THE VACUUM TRUCK (cfm @ in Hg): 434cfm @ 24in Hg
DRY STANDARD CUBIC FEET PER MINUTE (DSCFM) AIR FLOW CALCULATIONS (Qstd)
Date Time Vacuum Velocity Pipe ID Temp Rel Humid Water Qstd PPM T (K)Ps (Pa)Pv (Pa)
(inches of Hg)(ft/min)(in)(°F)(%)Vapor (%)(flow)(measured)
5/11/2022 8:00
5/11/2022 8:05 -21.00 198 6 66.3 80.1 1.09E-04 39 149.2 292.06 2182.7 1.75E+03
5/11/2022 8:20 -21.00 176 6 90.8 90.4 2.84E-04 32 149.2 305.67 4891.8 4.42E+03
5/11/2022 8:35 -21.00 217 6 119.7 100.0 7.95E-04 36 149.2 321.72 11480.5 1.15E+04
5/11/2022 8:50 -21.00 256 6 137.5 100.0 1.39E-03 38 149.2 331.61 18532.8 1.85E+04
5/11/2022 9:05 -21.00 305 6 156.0 100.0 2.55E-03 38 149.2 341.89 29485.5 2.95E+04
5/11/2022 9:20 -21.00 311 6 156.2 100.0 2.57E-03 39 149.2 342.00 29628.7 2.96E+04
5/11/2022 9:35 -21.00 316 6 156.6 100.0 2.61E-03 39 149.2 342.22 29916.9 2.99E+04
5/11/2022 9:50 -21.00 321 6 157.1 100.0 2.65E-03 40 149.2 342.50 30280.6 3.03E+04
5/11/2022 10:05 -21.00 314 6 157.3 100.0 2.67E-03 39 130.7 342.61 30427.1 3.04E+04
5/11/2022 10:35 -21.00 318 6 156.9 100.0 2.63E-03 39 133.8 342.39 30134.7 3.01E+04
5/11/2022 11:05 -21.00 324 6 159.6 100.0 2.89E-03 39 136.4 343.89 32155.3 3.22E+04
5/11/2022 11:35 -21.00 332 6 158.7 100.0 2.80E-03 40 151.2 343.39 31469.4 3.15E+04
5/11/2022 12:05 -21.00 344 6 158.2 100.0 2.75E-03 42 149.6 343.11 31093.7 3.11E+04
5/11/2022 12:35 -21.00 364 6 156.6 100.0 2.61E-03 45 153.1 342.22 29916.9 2.99E+04
5/11/2022 13:05 -21.00 337 6 158.3 100.0 2.76E-03 41 156.4 343.17 31168.6 3.12E+04
5/11/2022 13:35 -21.00 299 6 160.8 100.0 3.02E-03 35 154.6 344.56 33089.5 3.31E+04
5/11/2022 14:05 -21.00 283 6 157.2 100.0 2.66E-03 35 159.2 342.56 30353.7 3.04E+04
5/11/2022 14:35 -21.00 245 6 150.6 100.0 2.13E-03 33 157.7 338.89 25833.7 2.58E+04
5/11/2022 15:05 -21.00 292 6 145.2 100.0 1.78E-03 41 158.3 335.89 22573.1 2.26E+04
5/11/2022 15:35 -21.00 292 6 145.2 100.0 1.78E-03 41 149.2 335.89 22573.1 2.26E+04
5/11/2022 16:05 -21.00 292 6 145.2 100.0 1.78E-03 41 149.2 335.89 22573.1 2.26E+04
NOTES
Qstd = Flow at DSCFM
Vacuum = The level of vacuum being applied should be recorded from the vacuum truck tank (inches of Hg)
Velocity = The rate at which air flows is measured at the blower discharge piping (anemometer or pitot tube)
Pipe ID = The inside diameter of the blower discharge piping (from the vacuum truck)
Temperature = The temperature of the air stream exiting the blower discharge piping (dry bulb temp., in deg.°F)
Relative humidity = The % relative humidity of the air stream exiting the blower discharge piping
Water Vapor in % = Pounds of water per pound of dry air, derived from the Psychrometric chart (temp Vs relative humidity)
EQUATION
Qstd = (1-Water Vapor) * velocity * (PI * (diameter/24)^2) * (528°R/(Temp + 460))
Set up on well MW-3. MW-3 stinger set at 8 feet bgs; stinger lowered to 10 feet bgs at 0850 and lowered to 12 feet bgs at 0905
TABLE 1
AFVR DATA AND EMISSIONS CALCULATIONS (05/11/2022 EVENT)
CIRCLE K STORE #2723471
4940 U.S. HIGHWAY 264 WEST
WILSON, WILSON COUNTY, NORTH CAROLINA
NCDEQ INCIDENT NO. 33892
EMISSION CALCULATIONS
Elapsed
Time Flow PPM measured K PPMg Cg:m Cg PMRg PMR
(min)(DSCFM)(ppm)(#C - gas)(mg/dsm^3)(lb/dscf)(lb/hr)(lb)
5 39 149.2 4 596.8 3174 0.000198133 0.46 0.57
20 32 149.2 4 596.8 3174 0.000198133 0.42 0.11
35 36 149.2 4 596.8 3174 0.000198133 0.45 0.11
50 38 149.2 4 596.8 3174 0.000198133 0.45 0.11
65 38 149.2 4 596.8 3174 0.000198133 0.45 0.11
80 39 149.2 4 596.8 3174 0.000198133 0.46 0.12
95 39 149.2 4 596.8 3174 0.000198133 0.47 0.12
110 40 149.2 4 596.8 3174 0.000198133 0.47 0.12
125 39 130.7 4 522.8 2780 0.000173565 0.40 0.20
155 39 133.8 4 535.2 2846 0.000177682 0.42 0.21
185 39 136.4 4 545.6 2901 0.000181135 0.42 0.21
215 40 151.2 4 604.8 3216 0.000200789 0.48 0.24
245 42 149.6 4 598.4 3182 0.000198664 0.50 0.25
275 45 153.1 4 612.4 3257 0.000203312 0.55 0.28
305 41 156.4 4 625.6 3327 0.000207694 0.51 0.25
335 35 154.6 4 618.4 3289 0.000205304 0.43 0.21
365 35 159.2 4 636.8 3386 0.000211412 0.44 0.22
395 33 157.7 4 630.8 3354 0.00020942 0.41 0.21
425 41 158.3 4 633.2 3367 0.000210217 0.52 0.52
455 41 149.2 4 596.8 3174 0.000198133 0.49 0.45
485 41 149.2 4 596.8 3174 0.000198133 0.49 0.20
510
Total emissions in pounds 4.82
NOTES
PPM measured = Actual measurements (ppm) taken with a OVA or TVA at the blower discharge piping
K = Number of carbons in calibration gas: (Methane K = 1, Propane K = 3, Isobutylene = 4, or Hexane K = 6)
PPMg = PPMv, Volumetric concentration as gasoline emission, dry basis at STP
Cg:m = mg/dsm3, mass concentration of gasoline emission
Mg = 128 mg/mg-mole, molecular weight of gasoline (this value may vary depending on contaminant)
K3 = 24.07 dsm^3/1E6 mg-mole, mass to volume conversion factor at STP
Cg = lb/dcsf, mass concentration of gasoline emission, dry basis at STP
PMRg = lb/hr, pollutant mass removal rate of gasoline emission
PMR = pollutant mass removal of gasoline emission over time
Recovery:
46 Gallons total fluids
0 Gallons free product as a liquid
0.90821 Gallons of gasoline as vapor (assuming a specific density of 0.71 as a liquid)
TABLE 2
GROUNDWATER ELEVATIONS AND HISTORICAL DATA
CIRCLE K STORE #2723471
4940 U.S. HIGHWAY 264 WEST
WILSON, NORTH CAROLINA
NCDEQ INCIDENT NO. 33892
WELL
I.D. Date
TOC
Elevation
(ft)
Depth to
LNAPL
(ft)
Depth to
Groundwater
(ft)
LNAPL
Thickness
(ft)
Groundwater
Elevations (ft)
8/5/2013 5.53 6.38 0.85 94.27
3/4/2015 --4.70 --95.30
6/2/2016 --4.85 --95.15
12/22/2016 --5.76 --94.24
6/14/2017 --4.70 --95.30
3/22/2018 --4.70 --95.30
9/5/2018 --4.90 --95.10
3/5/2019 --4.57 --95.43
9/4/2019 --7.51 --92.49
3/17/2020 --5.17 --94.83
10/21/2020 --4.97 --95.03
10/18/2021 --6.99 --93.01
8/22/2022 --9.69 --90.31
8/5/2013
3/4/2015 --6.93 --87.15
6/2/2016 --8.35 --85.73
12/22/2016 --9.58 --84.50
6/14/2017 --8.16 --85.92
3/22/2018 --8.31 --85.77
9/5/2018 --9.42 --84.66
3/5/2019 --7.08 --87.00
9/4/2019
3/17/2020 --8.96 --85.12
10/21/2020 --8.31 --85.77
10/18/2021 --11.02 --83.06
8/22/2022
8/5/2013 5.50 6.08 0.58 95.14*
3/4/2015 --3.95 --96.83
6/2/2016 4.11 4.13 0.02 96.67*
12/22/2016 4.82 4.86 0.04 95.95*
6/14/2017
3/22/2018 --7.96 --92.82
9/5/2018 --4.13 --96.65
3/5/2019 --3.85 --96.93
9/4/2019 8.62 11.62 3.00 94.44*
3/17/2020 --4.40 --96.38
10/21/2020 --4.24 --96.54
10/18/2021 6.58 8.16 1.58 93.82*
5/11/2022 6.35 6.75 0.40 94.33*
8/22/2022 9.49 10.18 0.69 91.12*
Notes:
1. TOC = Top of well casing.
2. * denotes groundwater elevation corrected for presence of free product calculated by:
Well Dry
Well Dry
MW-1 100.00
MW-2
100.78
94.08
MW-3
Well Not Measured
Well Not Measured
TABLE 2
GROUNDWATER ELEVATIONS AND HISTORICAL DATA
CIRCLE K STORE #2723471
4940 U.S. HIGHWAY 264 WEST
WILSON, NORTH CAROLINA
NCDEQ INCIDENT NO. 33892
WELL
I.D. Date
TOC
Elevation
(ft)
Depth to
LNAPL
(ft)
Depth to
Groundwater
(ft)
LNAPL
Thickness
(ft)
Groundwater
Elevations (ft)
MW-1 100.00
8/5/2013 --8.10 --94.89
3/4/2015 --6.39 --96.60
6/2/2016 --7.22 --95.77
12/22/2016
6/14/2017
3/22/2018
9/5/2018
3/5/2019
9/4/2019
3/17/2020
10/21/2020
10/18/2021
8/22/2022
8/5/2013 --9.41 --92.86
3/4/2015 --7.05 --95.22
6/2/2016 --8.62 --93.65
12/22/2016 --9.97 --92.30
6/14/2017 --8.22 --94.05
3/22/2018 --7.43 --94.84
9/5/2018 --9.00 --93.27
3/5/2019 --5.92 --96.35
9/4/2019 --12.14 --90.13
3/17/2020 --7.85 --94.42
10/21/2020 --8.04 --94.23
10/18/2021 --11.55 --90.72
8/22/2022 --13.95 --88.32
3/4/2015 --7.36 --88.01
6/2/2016 --8.53 --93.43
12/22/2016 --9.94 --92.02
6/14/2017 --8.50 --93.46
3/22/2018 --8.30 --93.66
9/5/2018 --9.41 --92.55
3/5/2019 --7.25 --94.71
9/4/2019 --11.45 --90.51
3/17/2020 --8.54 --93.42
10/21/2020 --8.80 --93.16
10/18/2021 --11.05 --90.91
8/22/2022 --13.70 --88.26
Notes:
1. TOC = Top of well casing.
2. * denotes groundwater elevation corrected for presence of free product calculated by:
[(TOC Elevation-Depth to Groundwater)+(0.76*Product thickness)]
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
101.96MW-6
MW-5
102.99
Well Not Measured
Well Not MeasuredMW-4
Well Not Measured
Well Not Measured
102.27
Well Not Measured
Well Not Measured
TABLE 2
GROUNDWATER ELEVATIONS AND HISTORICAL DATA
CIRCLE K STORE #2723471
4940 U.S. HIGHWAY 264 WEST
WILSON, NORTH CAROLINA
NCDEQ INCIDENT NO. 33892
WELL
I.D. Date
TOC
Elevation
(ft)
Depth to
LNAPL
(ft)
Depth to
Groundwater
(ft)
LNAPL
Thickness
(ft)
Groundwater
Elevations (ft)
MW-1 100.00
3/4/2015 --8.28 --91.89
6/2/2016 --8.83 --91.34
12/22/2016
6/14/2017
3/22/2018
9/5/2018
3/5/2019
9/4/2019
3/17/2020
10/21/2020
10/18/2021
8/22/2022
3/4/2015 --4.10 --81.72
6/2/2016 --5.90 --79.92
12/22/2016
6/14/2017
3/22/2018
9/5/2018
3/5/2019
9/4/2019
3/17/2020
10/21/2020
10/18/2021
8/22/2022
3/4/2015 --9.21 --84.29
6/2/2016 --11.59 --81.91
12/22/2016
6/14/2017
3/22/2018
9/5/2018
3/5/2019
9/4/2019
3/17/2020
10/21/2020
10/18/2021
8/22/2022
Notes:
1. TOC = Top of well casing.
2. * denotes groundwater elevation corrected for presence of free product calculated by:
[(TOC Elevation-Depth to Groundwater)+(0.76*Product thickness)]
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
93.50
85.82
100.17
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
MW-9
Well Not Measured
Well Not Measured
MW-8
MW-7
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
TABLE 2
GROUNDWATER ELEVATIONS AND HISTORICAL DATA
CIRCLE K STORE #2723471
4940 U.S. HIGHWAY 264 WEST
WILSON, NORTH CAROLINA
NCDEQ INCIDENT NO. 33892
WELL
I.D. Date
TOC
Elevation
(ft)
Depth to
LNAPL
(ft)
Depth to
Groundwater
(ft)
LNAPL
Thickness
(ft)
Groundwater
Elevations (ft)
MW-1 100.00
3/4/2015 --7.52 --87.80
6/2/2016 --9.14 --86.18
12/22/2016
6/14/2017
3/22/2018
9/5/2018
3/5/2019
9/4/2019
3/17/2020
10/21/2020
10/18/2021
8/22/2022
3/4/2015 --7.12 --94.12
6/2/2016 --9.24 --92.00
12/22/2016 --10.77 --90.47
6/14/2017 --8.15 --93.09
3/22/2018 --9.34 --91.90
9/5/2018 --9.89 --91.35
3/5/2019 --8.20 --93.04
9/4/2019 --13.09 --88.15
3/17/2020 --9.28 --91.96
10/21/2020 --9.62 --91.62
10/18/2021 --10.52 --90.72
8/22/2022 --13.78 --87.46
11/24/15 --8.46 --92.44
1/26/2016 --7.22 --93.68
6/2/2016 --8.30 --92.60
12/22/2016
6/14/2017 --8.31 --92.59
3/22/2018
9/5/2018
3/5/2019
9/4/2019 --13.21 --87.69
3/17/2020
10/21/2020
10/18/2021
8/22/2022
Notes:
1. TOC = Top of well casing.
2. * denotes groundwater elevation corrected for presence of free product calculated by:
[(TOC Elevation-Depth to Groundwater)+(0.76*Product thickness)]
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
100.90
101.24
95.32
DW-1
DW-2
MW-10
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
TABLE 3
SELECT NATURAL ATTENUATION MEASUREMENTS
CIRCLE K STORE #2723471
4940 U.S. HIGHWAY 264 WEST
WILSON, NORTH CAROLINA
NCDEQ INCIDENT NO. 33892
Monitoring
Well ID Date pH
(unitless)
Dissolved
Oxygen
(mg/L)
Specific
Conductivity
(µs/cm2)
Temperature
(Celcius)ORP (Eh)
9/5/2018
3/5/2019
9/4/2019 6.28 0.42 426.7 30.9 -145.0
3/17/2020 6.74 0.71 525 19.50 -83.1
10/21/2020 7.63 1.11 505 28.1 -66.9
10/18/2021 6.85 0.59 463 25.49 8.8
8/22/2022
9/5/2018 4.60 0.59 110.4 26.1 164.3
3/5/2019 5.48 1.17 155.6 17.0 -5.4
9/4/2019
3/17/2020 5.36 0.17 256 20.30 0.7
10/21/2020 4.15 0.78 164.6 26.7 104.4
10/18/2021 7.36 2.90 138 21.65 118.9
8/22/2022
9/5/2018
3/5/2019
9/4/2019
3/17/2020
10/21/2020
10/18/2021
8/22/2022
9/5/2018 4.32 2.17 279.6 26.4 535.9
3/5/2019 4.83 4.37 162.2 16.0 247.6
9/4/2019 4.15 1.53 285.8 28.0 -89.4
3/17/2020 4.64 2.66 192 20.23 185.9
10/21/2020 3.89 0.97 279.8 28.0 209.3
10/18/2021 6.01 1.38 265 24.35 156.7
8/22/2022 4.81 0.70 270.5 24.0 193.5
9/5/2018 4.62 1.20 380.9 27.1 122.6
3/5/2019 4.92 2.99 371.2 17.3 141.7
9/4/2019 4.12 1.16 293.0 29.6 -123.4
3/17/2020 5.15 1.30 373 21.01 126.3
10/21/2020 4.15 1.52 375.6 27.4 136.2
10/18/2021 6.34 0.80 305 23.48 187.0
8/22/2022 5.21 1.73 269.3 24.5 134.6
9/5/2018 6.43 1.2 588.0 26.9 -104.1
3/5/2019 7.02 1.33 646.0 18.7 -118.2
9/4/2019 6.15 0.92 558.0 30.0 -160.1
3/17/2020 6.86 0.16 658 21.39 -70.4
10/21/2020 6.03 1.39 629 27.0 -66.3
10/18/2021 6.51 1.38 724 23.86 48.3
8/22/2022 6.64 2.20 353.4 24.8 69.1
No measurement - strong odor
Well Dry
No measurement - strong odor
No measurement - LNAPL present
No measurement - strong odor
No measurement - LNAPL present
No meausrement - strong odor
Well Dry
DW-1
MW-6
No measurement - sheen on water
No measurement - sheen on water
MW-1
MW-2
MW-3
MW-5
No measurement - LNAPL present
No measurement - strong odor
TABLE 4
CURRENT GROUNDWATER ANALYTICAL RESULTS
CIRCLE K STORE #2723471
4940 U.S. HIGHWAY 264 WEST
WILSON, NORTH CAROLINA
NCDEQ INCIDENT NO. 33892
BenzeneTolueneEthylbenzeneTotal XylenesTotal BTEXMTBENaphthaleneIPEIsopropylbenzenen-Butylbenzenesec-ButylbenzeneMethyl Chloridetert-Butylbenzene1,2,4-Trimethylbenzenen-PropylbenzeneMW-1 8/22/22 62.6 1.6 1.7 3.7 69.6 3.5 126 0.40J 12.2 17.4 10.5 0.73 <0.50 1.7 23.1
MW-2 8/22/22
MW-3 8/22/22
MW-5 8/22/22 <0.50 0.29J <0.50 <0.50 0.29J 14.8 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 0.20J <0.50
MW-6 8/22/22 <0.50 <0.50 <0.50 0.30J 0.30J <0.50 1.3 <0.50 <0.50 0.37J 0.85 <0.50 <0.50 0.21J <0.50
DW-1 8/22/22 2.3 <0.50 <0.50 0.53J 2.83J 61.9 2.2 0.74 0.75 2.7 4.8 0.31J 0.31J 0.17J <0.50
1 600 600 500 NE 20 6 25 70 70 70 3 70 400 70
11.9 3.6 250 4,500 NE 190 120 NE 27 4,200 NE 26 NE 2,200 17,000
5,000 260,000 80,000 50,000 NE 20,000 6,000 11,700 30,500 5,900 8,800 3,000 14,750 28,500 26,100
Notes:
1. "<" denotes compound not detected above laboratory method detection limit.
2. Concentrations are reported in micrograms per liter (ug/l) = parts per billion.
3. Concentrations in bold print equal or exceed the 2B Surface Water Standard x 10 (based on Human Health Standards).
4. NCDEQ = North Carolina Department of Environmental Quality.
5. GCL = Gross Contaminantion Level.
6. MTBE = Methyl Tertiary Butyl Ether.
7. Gross Contamination Levels for Groundwater are referenced in the
"Guidelines for Assessment and Corrective Action for UST Releases", November 2008, updated January 2010.
8. NE denotes not established.
9. J denotes concentration estimated by project laboratory.
Well Sampling
Date
EPA Method 6200B
2L Standard
2B Standard (x10)
GCLs
0.69 feet LNAPL
Well Dry

FIGURES

FIGURE 1
USGS TOPOGRAPHIC MAP
Pantry # 3471
4940 US Highway 264 West Wilson, North Carolina
2725 E. Millbrook Road, Suite 121 Raleigh, NC 27604
[phone]
PROJECT NO: 45.24639.3471
SCALE: 1” = 600’ DATE: 7/7/2009
SITE
MW-7MW-8MW-9MW-2MW-10MW-5MW-4MW-3MW-6MW-1DW-2DW-1USTBASINUSTBASINCIRCLE K STORE#2723471
MW-7MW-8MW-9MW-2MW-10MW-5MW-4MW-3MW-6MW-1DW-2DW-1USTBASINUSTBASINCIRCLE K STORE#2723471NMDRYNMNMNMNM87.4690.3188.2691.12NM88.3291.090.089.0
MW-7MW-8MW-9MW-2MW-10MW-5MW-4MW-3MW-6MW-1DW-2DW-1USTBASINUSTBASINCIRCLE K STORE#2723471(NS)(NS)(NS)(NS)(NS)(NS)

ATTACHMENT I

ATTACHMENT II

09/02/22
Technical Report for
Atlas
Circle K #2723471-Wilson, NC
SGS Job Number: LA82394
Sampling Date: 08/22/22
Report to:
ATC Group Services LLC.
2725 East Millbrook Road Suite 121
Raleigh, NC 27604
[e-mail]
ATTN: Maureen Jackson
Total number of pages in report:
Certifications: LDEQ(2048), LDHH(LA150012), AR(14-045-04), AZ(AZ0805), FL(E87657), IL(200082), KY(#31),
NC(487), SC(73004001), NJ(LA007), TX(T104704186-18-16), WV(257)
This report shall not be reproduced, except in its entirety, without the written approval of SGS.
Test results relate only to samples analyzed.
SGS North America Inc. • 500 Ambassador Caffery • Scott, LA 70583 • tel: [phone]
Test results contained within this data package meet the requirements
of the National Environmental Laboratory Accreditation Program
and/or state specific certification programs as applicable.
Client Service contact: Ron Benjamin 337-237-4775
Ron Benjamin
Lab Director
Scott, LA 09/02/22
e-Hardcopy 2.0
Automated Report
28
SGS is the sole authority for authorizing edits or modifications to this document.
Unauthorized modification of this report is strictly prohibited.
Review standard terms at: http://www.sgs.com/en/terms-and-conditions
The results set forth herein are provided by SGS North America Inc.
Please share your ideas about
how we can serve you better at:
[e-mail]
1 of 28
LA82394
Table of Contents
-1-
Sections:
Section 1: Sample Summary ...................................................................................................3
Section 2: Summary of Hits ....................................................................................................4
Section 3: Sample Results ........................................................................................................6
3.1: LA82394-1: MW-1 .......................................................................................................7
3.2: LA82394-2: MW-5 .......................................................................................................10
3.3: LA82394-3: MW-6 .......................................................................................................13
3.4: LA82394-4: DW-1 ........................................................................................................16
Section 4: MS Volatiles - QC Data Summaries .....................................................................19
4.1: Method Blank Summary ................................................................................................20
4.2: Blank Spike/Blank Spike Duplicate Summary ..............................................................24
4.3: Matrix Spike/Matrix Spike Duplicate Summary ...........................................................28 12342 of 28
LA82394
SGS North America Inc.
Sample Summary
Atlas
Job No:LA82394
Circle K #2723471-Wilson, NC
Sample Collected Matrix Client
Number Date Time By Received Code Type Sample ID
This report contains results reported as ND = Not detected. The following applies:
Organics ND = Not detected above the MDL
LA82394-1 08/22/22 10:20 LDS 08/23/22 AQ Ground Water MW-1
LA82394-2 08/22/22 11:15 LDS 08/23/22 AQ Ground Water MW-5
LA82394-3 08/22/22 11:00 LDS 08/23/22 AQ Ground Water MW-6
LA82394-4 08/22/22 09:50 LDS 08/23/22 AQ Ground Water DW-1
3 of 28
LA823941
Summary of Hits Page 1 of 2
Job Number:LA82394
Account:Atlas
Project:Circle K #2723471-Wilson, NC
Collected:08/22/22
Lab Sample ID Client Sample ID Result/
Analyte Qual RL MDL Units Method
LA82394-1 MW-1
Benzene 62.6 0.50 0.27 ug/l SM 6200B
n-Butylbenzene 17.4 0.50 0.092 ug/l SM 6200B
sec-Butylbenzene 10.5 0.50 0.14 ug/l SM 6200B
Di-Isopropyl Ether 0.40 J 0.50 0.073 ug/l SM 6200B
Ethylbenzene 1.7 0.50 0.20 ug/l SM 6200B
Isopropylbenzene 12.2 0.50 0.13 ug/l SM 6200B
Methyl Chloride 0.73 0.50 0.066 ug/l SM 6200B
Methyl Tert Butyl Ether 3.5 0.50 0.068 ug/l SM 6200B
Naphthalene 126 2.5 0.50 ug/l SM 6200B
n-Propylbenzene 23.1 0.50 0.22 ug/l SM 6200B
Toluene 1.6 0.50 0.29 ug/l SM 6200B
1,2,4-Trimethylbenzene 1.7 0.50 0.15 ug/l SM 6200B
m,p-Xylene 1.4 1.0 0.34 ug/l SM 6200B
o-Xylene 2.3 0.50 0.15 ug/l SM 6200B
Xylene (total)3.7 0.50 0.16 ug/l SM 6200B
LA82394-2 MW-5
Methyl Tert Butyl Ether 14.8 0.50 0.068 ug/l SM 6200B
Toluene 0.29 J 0.50 0.29 ug/l SM 6200B
1,2,4-Trimethylbenzene 0.20 J 0.50 0.15 ug/l SM 6200B
LA82394-3 MW-6
n-Butylbenzene 0.37 J 0.50 0.092 ug/l SM 6200B
sec-Butylbenzene 0.85 0.50 0.14 ug/l SM 6200B
Naphthalene 1.3 0.50 0.10 ug/l SM 6200B
1,2,4-Trimethylbenzene 0.21 J 0.50 0.15 ug/l SM 6200B
Xylene (total)0.30 J 0.50 0.16 ug/l SM 6200B
LA82394-4 DW-1
Benzene 2.3 0.50 0.27 ug/l SM 6200B
n-Butylbenzene 2.7 0.50 0.092 ug/l SM 6200B
sec-Butylbenzene 4.8 0.50 0.14 ug/l SM 6200B
tert-Butylbenzene 0.31 J 0.50 0.16 ug/l SM 6200B
Di-Isopropyl Ether 0.74 0.50 0.073 ug/l SM 6200B
Isopropylbenzene 0.75 0.50 0.13 ug/l SM 6200B
Methyl Chloride 0.31 J 0.50 0.066 ug/l SM 6200B
Methyl Tert Butyl Ether 61.9 0.50 0.068 ug/l SM 6200B
Naphthalene 2.2 0.50 0.10 ug/l SM 6200B
1,2,4-Trimethylbenzene 0.17 J 0.50 0.15 ug/l SM 6200B
m,p-Xylene 0.37 J 1.0 0.34 ug/l SM 6200B
4 of 28
LA823942
Summary of Hits Page 2 of 2
Job Number:LA82394
Account:Atlas
Project:Circle K #2723471-Wilson, NC
Collected:08/22/22
Lab Sample ID Client Sample ID Result/
Analyte Qual RL MDL Units Method
o-Xylene 0.16 J 0.50 0.15 ug/l SM 6200B
Xylene (total)0.53 0.50 0.16 ug/l SM 6200B
5 of 28
LA823942
SGS North America Inc.
Sample Results
Report of Analysis
Scott, LA
Section 3
6 of 28
LA823943
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:MW-1
Lab Sample ID:LA82394-1 Date Sampled:08/22/22
Matrix:AQ - Ground Water Date Received:08/23/22
Method:SM 6200B Percent Solids:n/a
Project:Circle K #2723471-Wilson, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 2K0143580.D 1 08/25/22 15:23 MB n/a n/a V2K3176
Run #2 1Q0144146.D 5 08/31/22 22:37 JY n/a n/a V1Q3121
Purge Volume
Run #1 25.0 ml
Run #2 25.0 ml
VOA Special List
CAS No.Compound Result RL MDL Units Q
67-64-1 Acetone ND 10 1.2 ug/l
71-43-2 Benzene 62.6 0.50 0.27 ug/l
108-86-1 Bromobenzene ND 0.50 0.18 ug/l
74-97-5 Bromochloromethane ND 0.50 0.12 ug/l
75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l
75-25-2 Bromoform ND 0.50 0.10 ug/l
104-51-8 n-Butylbenzene 17.4 0.50 0.092 ug/l
135-98-8 sec-Butylbenzene 10.5 0.50 0.14 ug/l
98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l
56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l
108-90-7 Chlorobenzene ND 0.50 0.16 ug/l
75-00-3 Chloroethane ND 0.50 0.055 ug/l
67-66-3 Chloroform ND 0.50 0.094 ug/l
95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l
106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l
124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l
106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l
75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l
541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l
95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l
106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l
75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l
107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l
75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l
78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l
142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l
594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l
563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
7 of 28
LA8239433.1
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:MW-1
Lab Sample ID:LA82394-1 Date Sampled:08/22/22
Matrix:AQ - Ground Water Date Received:08/23/22
Method:SM 6200B Percent Solids:n/a
Project:Circle K #2723471-Wilson, NC
VOA Special List
CAS No.Compound Result RL MDL Units Q
10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l
108-20-3 Di-Isopropyl Ether 0.40 0.50 0.073 ug/l J
64-17-5 Ethyl Alcohol ND 50 8.4 ug/l
100-41-4 Ethylbenzene 1.7 0.50 0.20 ug/l
591-78-6 2-Hexanone ND 1.0 0.42 ug/l
87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l
98-82-8 Isopropylbenzene 12.2 0.50 0.13 ug/l
99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l
74-83-9 Methyl Bromide ND 0.50 0.23 ug/l
74-87-3 Methyl Chloride 0.73 0.50 0.066 ug/l
74-95-3 Methylene Bromide ND 0.50 0.11 ug/l
75-09-2 Methylene Chloride ND 0.50 0.080 ug/l
78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l
108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l
1634-04-4 Methyl Tert Butyl Ether 3.5 0.50 0.068 ug/l
91-20-3 Naphthalene 126 a 2.5 0.50 ug/l
103-65-1 n-Propylbenzene 23.1 0.50 0.22 ug/l
100-42-5 Styrene ND 0.50 0.13 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l
127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l
108-88-3 Toluene 1.6 0.50 0.29 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l
71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l
79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l
79-01-6 Trichloroethylene ND 0.50 0.18 ug/l
75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l
96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l
95-63-6 1,2,4-Trimethylbenzene 1.7 0.50 0.15 ug/l
108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l
108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l
75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l
m,p-Xylene 1.4 1.0 0.34 ug/l
95-47-6 o-Xylene 2.3 0.50 0.15 ug/l
1330-20-7 Xylene (total)3.7 0.50 0.16 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 90%94%70-130%
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
8 of 28
LA8239433.1
SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:MW-1
Lab Sample ID:LA82394-1 Date Sampled:08/22/22
Matrix:AQ - Ground Water Date Received:08/23/22
Method:SM 6200B Percent Solids:n/a
Project:Circle K #2723471-Wilson, NC
VOA Special List
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
2037-26-5 Toluene-D8 98%108%70-130%
460-00-4 4-Bromofluorobenzene 133% b 139% b 70-130%
(a) Result is from Run# 2
(b) Outside control limits due to matrix interference. Confirmed by reanalysis.
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
9 of 28
LA8239433.1
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:MW-5
Lab Sample ID:LA82394-2 Date Sampled:08/22/22
Matrix:AQ - Ground Water Date Received:08/23/22
Method:SM 6200B Percent Solids:n/a
Project:Circle K #2723471-Wilson, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 2K0143581.D 1 08/25/22 15:53 MB n/a n/a V2K3176
Run #2 1Q0144154.D 1 09/01/22 02:18 JY n/a n/a V1Q3121
Purge Volume
Run #1 25.0 ml
Run #2 25.0 ml
VOA Special List
CAS No.Compound Result RL MDL Units Q
67-64-1 Acetone ND 10 1.2 ug/l
71-43-2 Benzene ND 0.50 0.27 ug/l
108-86-1 Bromobenzene ND 0.50 0.18 ug/l
74-97-5 Bromochloromethane ND 0.50 0.12 ug/l
75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l
75-25-2 Bromoform ND 0.50 0.10 ug/l
104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l
135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l
98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l
56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l
108-90-7 Chlorobenzene ND 0.50 0.16 ug/l
75-00-3 Chloroethane ND 0.50 0.055 ug/l
67-66-3 Chloroform ND 0.50 0.094 ug/l
95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l
106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l
124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l
106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l
75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l
541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l
95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l
106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l
75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l
107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l
75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l
78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l
142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l
594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l
563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
10 of 28
LA8239433.2
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:MW-5
Lab Sample ID:LA82394-2 Date Sampled:08/22/22
Matrix:AQ - Ground Water Date Received:08/23/22
Method:SM 6200B Percent Solids:n/a
Project:Circle K #2723471-Wilson, NC
VOA Special List
CAS No.Compound Result RL MDL Units Q
10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l
108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l
64-17-5 Ethyl Alcohol ND 50 8.4 ug/l
100-41-4 Ethylbenzene ND 0.50 0.20 ug/l
591-78-6 2-Hexanone ND 1.0 0.42 ug/l
87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l
98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l
99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l
74-83-9 Methyl Bromide ND 0.50 0.23 ug/l
74-87-3 Methyl Chloride ND 0.50 0.066 ug/l
74-95-3 Methylene Bromide ND 0.50 0.11 ug/l
75-09-2 Methylene Chloride ND 0.50 0.080 ug/l
78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l
108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l
1634-04-4 Methyl Tert Butyl Ether 14.8 0.50 0.068 ug/l
91-20-3 Naphthalene ND a 0.50 0.10 ug/l
103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l
100-42-5 Styrene ND 0.50 0.13 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l
127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l
108-88-3 Toluene 0.29 0.50 0.29 ug/l J
87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l
71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l
79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l
79-01-6 Trichloroethylene ND 0.50 0.18 ug/l
75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l
96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l
95-63-6 1,2,4-Trimethylbenzene 0.20 0.50 0.15 ug/l J
108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l
108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l
75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l
m,p-Xylene ND a 1.0 0.34 ug/l
95-47-6 o-Xylene ND a 0.50 0.15 ug/l
1330-20-7 Xylene (total)ND a 0.50 0.16 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 91%103%70-130%
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
11 of 28
LA8239433.2
SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:MW-5
Lab Sample ID:LA82394-2 Date Sampled:08/22/22
Matrix:AQ - Ground Water Date Received:08/23/22
Method:SM 6200B Percent Solids:n/a
Project:Circle K #2723471-Wilson, NC
VOA Special List
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
2037-26-5 Toluene-D8 100%107%70-130%
460-00-4 4-Bromofluorobenzene 102%115%70-130%
(a) Result is from Run# 2
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
12 of 28
LA8239433.2
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:MW-6
Lab Sample ID:LA82394-3 Date Sampled:08/22/22
Matrix:AQ - Ground Water Date Received:08/23/22
Method:SM 6200B Percent Solids:n/a
Project:Circle K #2723471-Wilson, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 2K0143582.D 1 08/25/22 16:23 MB n/a n/a V2K3176
Run #2 a 1Q0144155.D 1 09/01/22 02:46 JY n/a n/a V1Q3121
Purge Volume
Run #1 25.0 ml
Run #2 25.0 ml
VOA Special List
CAS No.Compound Result RL MDL Units Q
67-64-1 Acetone ND 10 1.2 ug/l
71-43-2 Benzene ND 0.50 0.27 ug/l
108-86-1 Bromobenzene ND 0.50 0.18 ug/l
74-97-5 Bromochloromethane ND 0.50 0.12 ug/l
75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l
75-25-2 Bromoform ND 0.50 0.10 ug/l
104-51-8 n-Butylbenzene 0.37 0.50 0.092 ug/l J
135-98-8 sec-Butylbenzene 0.85 0.50 0.14 ug/l
98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l
56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l
108-90-7 Chlorobenzene ND 0.50 0.16 ug/l
75-00-3 Chloroethane ND 0.50 0.055 ug/l
67-66-3 Chloroform ND 0.50 0.094 ug/l
95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l
106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l
124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l
106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l
75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l
541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l
95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l
106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l
75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l
107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l
75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l
78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l
142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l
594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l
563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
13 of 28
LA8239433.3
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:MW-6
Lab Sample ID:LA82394-3 Date Sampled:08/22/22
Matrix:AQ - Ground Water Date Received:08/23/22
Method:SM 6200B Percent Solids:n/a
Project:Circle K #2723471-Wilson, NC
VOA Special List
CAS No.Compound Result RL MDL Units Q
10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l
108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l
64-17-5 Ethyl Alcohol ND 50 8.4 ug/l
100-41-4 Ethylbenzene ND 0.50 0.20 ug/l
591-78-6 2-Hexanone ND 1.0 0.42 ug/l
87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l
98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l
99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l
74-83-9 Methyl Bromide ND 0.50 0.23 ug/l
74-87-3 Methyl Chloride ND 0.50 0.066 ug/l
74-95-3 Methylene Bromide ND 0.50 0.11 ug/l
75-09-2 Methylene Chloride ND 0.50 0.080 ug/l
78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l
108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l
1634-04-4 Methyl Tert Butyl Ether ND 0.50 0.068 ug/l
91-20-3 Naphthalene 1.3 0.50 0.10 ug/l
103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l
100-42-5 Styrene ND 0.50 0.13 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l
127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l
108-88-3 Toluene ND 0.50 0.29 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l
71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l
79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l
79-01-6 Trichloroethylene ND 0.50 0.18 ug/l
75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l
96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l
95-63-6 1,2,4-Trimethylbenzene 0.21 0.50 0.15 ug/l J
108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l
108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l
75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l
m,p-Xylene ND 1.0 0.34 ug/l
95-47-6 o-Xylene ND 0.50 0.15 ug/l
1330-20-7 Xylene (total)0.30 0.50 0.16 ug/l J
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 87%101%70-130%
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
14 of 28
LA8239433.3
SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:MW-6
Lab Sample ID:LA82394-3 Date Sampled:08/22/22
Matrix:AQ - Ground Water Date Received:08/23/22
Method:SM 6200B Percent Solids:n/a
Project:Circle K #2723471-Wilson, NC
VOA Special List
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
2037-26-5 Toluene-D8 101%105%70-130%
460-00-4 4-Bromofluorobenzene 105%112%70-130%
(a) Confirmation run.
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
15 of 28
LA8239433.3
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:DW-1
Lab Sample ID:LA82394-4 Date Sampled:08/22/22
Matrix:AQ - Ground Water Date Received:08/23/22
Method:SM 6200B Percent Solids:n/a
Project:Circle K #2723471-Wilson, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 2K0143583.D 1 08/25/22 16:53 MB n/a n/a V2K3176
Run #2
Purge Volume
Run #1 25.0 ml
Run #2
VOA Special List
CAS No.Compound Result RL MDL Units Q
67-64-1 Acetone ND 10 1.2 ug/l
71-43-2 Benzene 2.3 0.50 0.27 ug/l
108-86-1 Bromobenzene ND 0.50 0.18 ug/l
74-97-5 Bromochloromethane ND 0.50 0.12 ug/l
75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l
75-25-2 Bromoform ND 0.50 0.10 ug/l
104-51-8 n-Butylbenzene 2.7 0.50 0.092 ug/l
135-98-8 sec-Butylbenzene 4.8 0.50 0.14 ug/l
98-06-6 tert-Butylbenzene 0.31 0.50 0.16 ug/l J
56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l
108-90-7 Chlorobenzene ND 0.50 0.16 ug/l
75-00-3 Chloroethane ND 0.50 0.055 ug/l
67-66-3 Chloroform ND 0.50 0.094 ug/l
95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l
106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l
124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l
106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l
75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l
541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l
95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l
106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l
75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l
107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l
75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l
78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l
142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l
594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l
563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
16 of 28
LA8239433.4
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:DW-1
Lab Sample ID:LA82394-4 Date Sampled:08/22/22
Matrix:AQ - Ground Water Date Received:08/23/22
Method:SM 6200B Percent Solids:n/a
Project:Circle K #2723471-Wilson, NC
VOA Special List
CAS No.Compound Result RL MDL Units Q
10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l
108-20-3 Di-Isopropyl Ether 0.74 0.50 0.073 ug/l
64-17-5 Ethyl Alcohol ND 50 8.4 ug/l
100-41-4 Ethylbenzene ND 0.50 0.20 ug/l
591-78-6 2-Hexanone ND 1.0 0.42 ug/l
87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l
98-82-8 Isopropylbenzene 0.75 0.50 0.13 ug/l
99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l
74-83-9 Methyl Bromide ND 0.50 0.23 ug/l
74-87-3 Methyl Chloride 0.31 0.50 0.066 ug/l J
74-95-3 Methylene Bromide ND 0.50 0.11 ug/l
75-09-2 Methylene Chloride ND 0.50 0.080 ug/l
78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l
108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l
1634-04-4 Methyl Tert Butyl Ether 61.9 0.50 0.068 ug/l
91-20-3 Naphthalene 2.2 0.50 0.10 ug/l
103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l
100-42-5 Styrene ND 0.50 0.13 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l
127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l
108-88-3 Toluene ND 0.50 0.29 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l
71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l
79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l
79-01-6 Trichloroethylene ND 0.50 0.18 ug/l
75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l
96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l
95-63-6 1,2,4-Trimethylbenzene 0.17 0.50 0.15 ug/l J
108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l
108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l
75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l
m,p-Xylene 0.37 1.0 0.34 ug/l J
95-47-6 o-Xylene 0.16 0.50 0.15 ug/l J
1330-20-7 Xylene (total)0.53 0.50 0.16 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 90%70-130%
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
17 of 28
LA8239433.4
SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:DW-1
Lab Sample ID:LA82394-4 Date Sampled:08/22/22
Matrix:AQ - Ground Water Date Received:08/23/22
Method:SM 6200B Percent Solids:n/a
Project:Circle K #2723471-Wilson, NC
VOA Special List
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
2037-26-5 Toluene-D8 99%70-130%
460-00-4 4-Bromofluorobenzene 109%70-130%
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
18 of 28
LA8239433.4
SGS North America Inc.
MS Volatiles
QC Data Summaries
Includes the following where applicable:
• Method Blank Summaries
• Blank Spike Summaries
• Matrix Spike and Duplicate Summaries
Scott, LA
Section 4
19 of 28
LA823944
Method Blank Summary Page 1 of 3
Job Number:LA82394
Account:ATCNCR Atlas
Project:Circle K #2723471-Wilson, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K3176-MB1 2K0143576.D 1 08/25/22 MB n/a n/a V2K3176
The QC reported here applies to the following samples:Method: SM 6200B
LA82394-1, LA82394-2, LA82394-3, LA82394-4
CAS No.Compound Result RL MDL Units Q
67-64-1 Acetone ND 10 1.2 ug/l
71-43-2 Benzene ND 0.50 0.27 ug/l
108-86-1 Bromobenzene ND 0.50 0.18 ug/l
74-97-5 Bromochloromethane ND 0.50 0.12 ug/l
75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l
75-25-2 Bromoform ND 0.50 0.10 ug/l
104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l
135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l
98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l
56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l
108-90-7 Chlorobenzene ND 0.50 0.16 ug/l
75-00-3 Chloroethane ND 0.50 0.055 ug/l
67-66-3 Chloroform ND 0.50 0.094 ug/l
95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l
106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l
124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l
106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l
75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l
541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l
95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l
106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l
75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l
107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l
75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l
78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l
142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l
594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l
563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l
10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l
108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l
64-17-5 Ethyl Alcohol ND 50 8.4 ug/l
100-41-4 Ethylbenzene ND 0.50 0.20 ug/l
20 of 28
LA8239444.1.1
Method Blank Summary Page 2 of 3
Job Number:LA82394
Account:ATCNCR Atlas
Project:Circle K #2723471-Wilson, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K3176-MB1 2K0143576.D 1 08/25/22 MB n/a n/a V2K3176
The QC reported here applies to the following samples:Method: SM 6200B
LA82394-1, LA82394-2, LA82394-3, LA82394-4
CAS No.Compound Result RL MDL Units Q
591-78-6 2-Hexanone ND 1.0 0.42 ug/l
87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l
98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l
99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l
74-83-9 Methyl Bromide ND 0.50 0.23 ug/l
74-87-3 Methyl Chloride ND 0.50 0.066 ug/l
74-95-3 Methylene Bromide ND 0.50 0.11 ug/l
75-09-2 Methylene Chloride ND 0.50 0.080 ug/l
78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l
108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l
1634-04-4 Methyl Tert Butyl Ether ND 0.50 0.068 ug/l
91-20-3 Naphthalene 0.49 0.50 0.10 ug/l J
103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l
100-42-5 Styrene ND 0.50 0.13 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l
127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l
108-88-3 Toluene ND 0.50 0.29 ug/l
87-61-6 1,2,3-Trichlorobenzene 0.57 0.50 0.16 ug/l
120-82-1 1,2,4-Trichlorobenzene 0.33 0.50 0.17 ug/l J
71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l
79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l
79-01-6 Trichloroethylene ND 0.50 0.18 ug/l
75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l
96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l
95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l
108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l
108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l
75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l
m,p-Xylene ND 1.0 0.34 ug/l
95-47-6 o-Xylene ND 0.50 0.15 ug/l
1330-20-7 Xylene (total)ND 0.50 0.16 ug/l
21 of 28
LA8239444.1.1
Method Blank Summary Page 3 of 3
Job Number:LA82394
Account:ATCNCR Atlas
Project:Circle K #2723471-Wilson, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K3176-MB1 2K0143576.D 1 08/25/22 MB n/a n/a V2K3176
The QC reported here applies to the following samples:Method: SM 6200B
LA82394-1, LA82394-2, LA82394-3, LA82394-4
CAS No.Surrogate Recoveries Limits
17060-07-0 1,2-Dichloroethane-D4 94%70-130%
2037-26-5 Toluene-D8 100%70-130%
460-00-4 4-Bromofluorobenzene 104%70-130%
22 of 28
LA8239444.1.1
Method Blank Summary Page 1 of 1
Job Number:LA82394
Account:ATCNCR Atlas
Project:Circle K #2723471-Wilson, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V1Q3121-MB1 1Q0144142.D 1 08/31/22 JY n/a n/a V1Q3121
The QC reported here applies to the following samples:Method: SM 6200B
LA82394-1, LA82394-2
CAS No.Compound Result RL MDL Units Q
91-20-3 Naphthalene ND 0.50 0.10 ug/l
m,p-Xylene ND 1.0 0.34 ug/l
95-47-6 o-Xylene ND 0.50 0.15 ug/l
1330-20-7 Xylene (total)ND 0.50 0.16 ug/l
CAS No.Surrogate Recoveries Limits
17060-07-0 1,2-Dichloroethane-D4 108%70-130%
2037-26-5 Toluene-D8 104%70-130%
460-00-4 4-Bromofluorobenzene 113%70-130%
23 of 28
LA8239444.1.2
Blank Spike/Blank Spike Duplicate Summary Page 1 of 3
Job Number:LA82394
Account:ATCNCR Atlas
Project:Circle K #2723471-Wilson, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K3176-BS1 2K0143574.D 1 08/25/22 MB n/a n/a V2K3176
V2K3176-BSD1 2K0143575.D 1 08/25/22 MB n/a n/a V2K3176
The QC reported here applies to the following samples:Method: SM 6200B
LA82394-1, LA82394-2, LA82394-3, LA82394-4
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD
67-64-1 Acetone 50 66.4 133* a 81.5 163* a 20 70-130/30
71-43-2 Benzene 20 19.4 97 19.4 97 0 70-130/30
108-86-1 Bromobenzene 20 20.1 101 20.5 103 2 70-130/30
74-97-5 Bromochloromethane 20 18.5 93 18.1 91 2 70-130/30
75-27-4 Bromodichloromethane 20 20.8 104 21.2 106 2 70-130/30
75-25-2 Bromoform 20 21.0 105 21.6 108 3 70-130/30
104-51-8 n-Butylbenzene 20 20.8 104 20.1 101 3 70-130/30
135-98-8 sec-Butylbenzene 20 19.7 99 18.6 93 6 70-130/30
98-06-6 tert-Butylbenzene 20 18.9 95 17.9 90 5 70-130/30
56-23-5 Carbon Tetrachloride 20 18.5 93 16.8 84 10 70-130/30
108-90-7 Chlorobenzene 20 19.6 98 19.6 98 0 70-130/30
75-00-3 Chloroethane 20 18.9 95 17.6 88 7 60-140/30
67-66-3 Chloroform 20 17.6 88 17.8 89 1 70-130/30
95-49-8 o-Chlorotoluene 20 18.7 94 18.0 90 4 70-130/30
106-43-4 p-Chlorotoluene 20 19.1 96 18.3 92 4 70-130/30
124-48-1 Dibromochloromethane 20 22.3 112 23.5 118 5 70-130/30
96-12-8 1,2-Dibromo-3-chloropropane 20 19.7 99 20.2 101 3 70-130/30
106-93-4 1,2-Dibromoethane 20 20.3 102 22.0 110 8 70-130/30
75-71-8 Dichlorodifluoromethane 20 18.6 93 17.2 86 8 60-140/30
541-73-1 m-Dichlorobenzene 20 19.3 97 18.2 91 6 70-130/30
95-50-1 o-Dichlorobenzene 20 19.0 95 19.1 96 1 70-130/30
106-46-7 p-Dichlorobenzene 20 18.2 91 17.9 90 2 70-130/30
75-34-3 1,1-Dichloroethane 20 18.2 91 17.2 86 6 70-130/30
107-06-2 1,2-Dichloroethane 20 19.1 96 19.3 97 1 70-130/30
75-35-4 1,1-Dichloroethylene 20 18.1 91 16.5 83 9 70-130/30
156-59-2 cis-1,2-Dichloroethylene 20 17.4 87 16.8 84 4 70-130/30
156-60-5 trans-1,2-Dichloroethylene 20 17.2 86 16.2 81 6 70-130/30
78-87-5 1,2-Dichloropropane 20 20.9 105 21.4 107 2 70-130/30
142-28-9 1,3-Dichloropropane 20 20.2 101 21.2 106 5 70-130/30
594-20-7 2,2-Dichloropropane 20 19.6 98 17.9 90 9 70-130/30
563-58-6 1,1-Dichloropropene 20 17.8 89 16.6 83 7 70-130/30
10061-01-5 cis-1,3-Dichloropropene 20 21.5 108 21.0 105 2 70-130/30
10061-02-6 trans-1,3-Dichloropropene 20 20.4 102 21.8 109 7 70-130/30
108-20-3 Di-Isopropyl Ether 20 18.6 93 18.2 91 2 70-130/30
64-17-5 Ethyl Alcohol 400 378 95 349 87 8 70-130/30
100-41-4 Ethylbenzene 20 21.2 106 20.2 101 5 70-130/30
* = Outside of Control Limits.
24 of 28
LA8239444.2.1
Blank Spike/Blank Spike Duplicate Summary Page 2 of 3
Job Number:LA82394
Account:ATCNCR Atlas
Project:Circle K #2723471-Wilson, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K3176-BS1 2K0143574.D 1 08/25/22 MB n/a n/a V2K3176
V2K3176-BSD1 2K0143575.D 1 08/25/22 MB n/a n/a V2K3176
The QC reported here applies to the following samples:Method: SM 6200B
LA82394-1, LA82394-2, LA82394-3, LA82394-4
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD
591-78-6 2-Hexanone 50 62.0 124 70.7 141* a 13 70-130/30
87-68-3 Hexachlorobutadiene 20 20.3 102 19.2 96 6 70-130/30
98-82-8 Isopropylbenzene 20 20.5 103 20.3 102 1 70-130/30
99-87-6 p-Isopropyltoluene 20 19.8 99 18.8 94 5 70-130/30
74-83-9 Methyl Bromide 20 17.6 88 17.5 88 1 60-140/30
74-87-3 Methyl Chloride 20 17.8 89 16.8 84 6 60-140/30
74-95-3 Methylene Bromide 20 19.2 96 20.6 103 7 70-130/30
75-09-2 Methylene Chloride 20 17.6 88 17.1 86 3 70-130/30
78-93-3 Methyl Ethyl Ketone 50 59.1 118 55.9 112 6 70-130/30
108-10-1 4-Methyl-2-pentanone 50 52.3 105 53.9 108 3 70-130/30
1634-04-4 Methyl Tert Butyl Ether 20 17.9 90 17.8 89 1 70-130/30
91-20-3 Naphthalene 20 21.2 106 21.3 107 0 70-130/30
103-65-1 n-Propylbenzene 20 19.7 99 18.4 92 7 70-130/30
100-42-5 Styrene 20 21.4 107 21.7 109 1 70-130/30
630-20-6 1,1,1,2-Tetrachloroethane 20 20.5 103 20.3 102 1 70-130/30
79-34-5 1,1,2,2-Tetrachloroethane 20 19.6 98 19.8 99 1 70-130/30
127-18-4 Tetrachloroethylene 20 20.3 102 19.8 99 2 70-130/30
108-88-3 Toluene 20 19.1 96 19.0 95 1 70-130/30
87-61-6 1,2,3-Trichlorobenzene 20 20.7 104 20.7 104 0 70-130/30
120-82-1 1,2,4-Trichlorobenzene 20 21.0 105 21.0 105 0 70-130/30
71-55-6 1,1,1-Trichloroethane 20 19.3 97 17.6 88 9 70-130/30
79-00-5 1,1,2-Trichloroethane 20 20.1 101 20.7 104 3 70-130/30
79-01-6 Trichloroethylene 20 20.7 104 19.7 99 5 70-130/30
75-69-4 Trichlorofluoromethane 20 19.0 95 17.3 87 9 60-140/30
96-18-4 1,2,3-Trichloropropane 20 17.6 88 18.8 94 7 70-130/30
95-63-6 1,2,4-Trimethylbenzene 20 19.5 98 19.1 96 2 70-130/30
108-67-8 1,3,5-Trimethylbenzene 20 19.5 98 18.6 93 5 70-130/30
108-05-4 Vinyl Acetate 20 19.9 100 18.9 95 5 70-130/30
75-01-4 Vinyl Chloride 20 18.7 94 17.1 86 9 60-140/30
m,p-Xylene 40 43.3 108 43.3 108 0 70-130/30
95-47-6 o-Xylene 20 20.3 102 20.6 103 1 70-130/30
1330-20-7 Xylene (total)60 63.6 106 63.9 107 0 70-130/30
* = Outside of Control Limits.
25 of 28
LA8239444.2.1
Blank Spike/Blank Spike Duplicate Summary Page 3 of 3
Job Number:LA82394
Account:ATCNCR Atlas
Project:Circle K #2723471-Wilson, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K3176-BS1 2K0143574.D 1 08/25/22 MB n/a n/a V2K3176
V2K3176-BSD1 2K0143575.D 1 08/25/22 MB n/a n/a V2K3176
The QC reported here applies to the following samples:Method: SM 6200B
LA82394-1, LA82394-2, LA82394-3, LA82394-4
CAS No.Surrogate Recoveries BSP BSD Limits
17060-07-0 1,2-Dichloroethane-D4 96%95%70-130%
2037-26-5 Toluene-D8 98%95%70-130%
460-00-4 4-Bromofluorobenzene 102%103%70-130%
(a) Outside control limits biased high. Analyte not detected in associated samples.
* = Outside of Control Limits.
26 of 28
LA8239444.2.1
Blank Spike/Blank Spike Duplicate Summary Page 1 of 1
Job Number:LA82394
Account:ATCNCR Atlas
Project:Circle K #2723471-Wilson, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V1Q3121-BS1 a 1Q0144147.D 1 08/31/22 JY n/a n/a V1Q3121
V1Q3121-BSD1 a 1Q0144148.D 1 08/31/22 JY n/a n/a V1Q3121
The QC reported here applies to the following samples:Method: SM 6200B
LA82394-1, LA82394-2
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD
91-20-3 Naphthalene 20 20.9 105 21.7 109 4 70-130/30
m,p-Xylene 40 49.5 124 49.6 124 0 70-130/30
95-47-6 o-Xylene 20 22.8 114 23.1 116 1 70-130/30
1330-20-7 Xylene (total)60 72.3 121 72.7 121 1 70-130/30
CAS No.Surrogate Recoveries BSP BSD Limits
17060-07-0 1,2-Dichloroethane-D4 104%104%70-130%
2037-26-5 Toluene-D8 88%90%70-130%
460-00-4 4-Bromofluorobenzene 107%106%70-130%
(a) Internal standards marginally exceed less than 10% of upper limits area. However, the recovery for both
BS/BSD are within passing criteria.
* = Outside of Control Limits.
27 of 28
LA8239444.2.2
Matrix Spike/Matrix Spike Duplicate Summary Page 1 of 1
Job Number:LA82394
Account:ATCNCR Atlas
Project:Circle K #2723471-Wilson, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA82291-1MS a 1Q0144149.D 50 09/01/22 JY n/a n/a V1Q3121
LA82291-1MSD a 1Q0144150.D 50 09/01/22 JY n/a n/a V1Q3121
LA82291-1 1Q0144145.D 50 08/31/22 JY n/a n/a V1Q3121
The QC reported here applies to the following samples:Method: SM 6200B
LA82394-1, LA82394-2
LA82291-1 Spike MS MS Spike MSD MSD Limits
CAS No.Compound ug/l Q ug/l ug/l %ug/l ug/l %RPD Rec/RPD
91-20-3 Naphthalene 85.6 1000 1110 102 1000 1100 101 1 70-130/20
m,p-Xylene 2310 2000 4900 130 2000 4900 130 0 70-130/20
95-47-6 o-Xylene 937 1000 2270 133* b 1000 2310 137* b 2 70-130/20
1330-20-7 Xylene (total)3250 3000 7160 130 3000 7210 132* b 1 70-130/20
CAS No.Surrogate Recoveries MS MSD LA82291-1 Limits
17060-07-0 1,2-Dichloroethane-D4 102%103%101%70-130%
2037-26-5 Toluene-D8 90%90%106%70-130%
460-00-4 4-Bromofluorobenzene 105%107%114%70-130%
(a) Internal standards marginally exceed less than 13% of upper limits area.
(b) Outside control limits due to matrix interference. Blank Spike meets acceptance criteria.
* = Outside of Control Limits.
28 of 28
LA8239444.3.1