FA-7931_42180_CA_MRP_20221201

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

December 1, 2022 Mr. James Brown North Carolina Department of Environmental Quality Fayetteville Regional Office Division of Waste Management - UST Section 225 Green Street, Suite 714, Systel Building Fayetteville, North Carolina 28301 Re: Groundwater Monitoring Report Circle K Store #2723842 7249 US Highway 15-501 Carthage, Moore County, North Carolina
NCDEQ Incident No. 42180
Dear Mr. Brown: ATC Associates of North Carolina, P.C. (ATC), on behalf of Circle K Stores, Inc., is submitting this Groundwater Monitoring Report to document the recent groundwater sampling event. If you have any questions or require additional information, please contact our office at [phone]. Sincerely, ATC Associates of North Carolina, P.C. Maureen Jackson, P.G. Senior Project Manager cc: Mr. Alan Cubberley, Circle K Stores, Inc.

Groundwater Monitoring Report
Circle K Store #2723842 7249 US Highway 15-501 Carthage, North Carolina December 1, 2022

Site Identification
1. Site Identification Date of Report: December 1, 2022 Facility I.D.: 0-0000032404 UST Incident Number (if known): 42180 Site Risk: __High________ Site Rank: 210A Land Use Category: Residential Site Name: Circle K Store #2723842 Site Street Address: 7249 US Highway 15-501 City/Town: Carthage Zip Code: 28327 County: Moore Description of Geographical Data Point: Onsite Building________ Location Method: Google Earth______________ ___________ __ Latitude (decimal degrees): _35°15’19.91” N_ Longitude (decimal degrees): __79°26’27.99” W 2. Information about Contacts Associated with the Leaking UST System UST Owner: Circle K Stores, Inc. Address: 1100 Situs Court, Suite 100 Raleigh, NC 27606 Tel.: [phone]
UST Operator: _Circle K Stores, Inc. Address: 1100 Situs Court, Suite 100 Raleigh, NC 27606 Tel.: [phone] Property Owner: Commercial Net Lease Realty Address: 450 South Orange Avenue, Suite 900 Orlando, FL 32801 Tel.: Unknown Property Occupant: Circle K Store #2723842 Address: 7249 US Highway 15-501 Carthage, NC 28327 Tel.: [phone] Consultant/Contractor: ATC Associates of North Carolina, P.C. Address: 2725 E. Millbrook Road, Suite 121 Raleigh, NC 27604 Tel.: [phone] Analytical Laboratory: SGS North America, Inc. State Certification No.__487 __ _ Address: 500 Ambassador Caffery Scott, Louisiana 70583 Tel: _(337) 237-4775 3. Information about Release Date Discovered: January 2, 2019 Estimated Quantity of Release: Unknown Cause of Release: Regular and Premium Gasoline Spill Buckets Failed Hydrostatic Tests Source of Release (Dispenser/Piping/UST): UST System Sizes and contents of UST system(s) from which the release occurred: Two 8,000-gallon gasoline USTs
Criteria Used to Classify Risk: Drinking water wells within 1,000 feet of release 4. Information about the Monitoring Report Date(s) of Groundwater Monitoring/Soil Sampling Event(s): October 27, 2022 Period of Time Reported: May 1, 2022 – November 30, 2022 Type of Monitoring Report: Semi-Annual Groundwater Monitoring

TABLE OF CONTENTS
1.0 INTRODUCTION.......................................................................................................1
2.0 EXECUTIVE SUMMARY ........................................................................................1
3.0 SITE HISTORY ..........................................................................................................2
4.0 GROUNDWATER MONITORING .........................................................................4
4.1 Geology and Hydrogeology .................................................................................4 4.2 Groundwater Elevations.......................................................................................5 4.3 Biosock Maintenance ...........................................................................................5 4.4 Groundwater Analytical Results ..........................................................................5
5.0 MONITORING PLAN AND SCHEDULE ..............................................................7
6.0 CONCLUSIONS .........................................................................................................7
7.0 STATEMENTS AND CERTIFICATION ................................................................8

TABLES Table 1 UST System Information Table 2 Water Supply Well Information
Table 3 Adjacent Property Owner Information
Table 4 Monitoring Well Construction Details Table 5 Groundwater Elevations and Historical Data Table 6 Current Groundwater Analytical Results Table 7 Historical Groundwater Analytical Results
Table 8 Select Natural Attenuation Measurements
Table 9 Contaminant Mass Calculations (Benzene) Table 10 Contaminant Mass Removal (Benzene)
FIGURES Figure 1 Topographic Map Figure 2 Site Map Figure 3 Water Supply Well Map
Figure 4 Groundwater Elevation Contour Map Figure 5 Dissolved Benzene Isoconcentration Contour Map Figure 6 Other Dissolved Contaminants of Concern Map Figure 7 MW-1: Dissolved Benzene and MTBE Concentrations through Time versus Depth to Water
Figure 8 MW-4: Dissolved Benzene and MTBE Concentrations through Time versus Depth to Water Figure 9 MW-6: Dissolved Benzene and MTBE Concentrations through Time versus Depth to Water APPENDICES Appendix A Historical Soil Analytical Data and Soil Sample Location Map Appendix B Geologic Transect and Cross-Section Maps (2019)
Appendix C Historical Groundwater Elevation Contour Maps Appendix D Laboratory Analytical Results Appendix E Contaminant Mass versus Time
Monitoring Report December 1, 2022 NCDEQ Incident No.42180
Page 1

1.0 INTRODUCTION
ATC Associates of North Carolina, P.C. (ATC), on behalf of Circle K Stores, Inc. (Circle K) is
submitting this monitoring report for the Circle K Store #2723842 facility located at 7249 U.S.
Highway 15-501 Carthage, Moore County, North Carolina (Incident #42180). Currently, the site
is an active convenience store and retail fuel outlet. A site topographic map is presented as
Figure 1 and site map is presented as Figure 2. UST owner/operator and system information is
included in Table 1.

2.0 EXECUTIVE SUMMARY
The presence of petroleum-related impacts to soil, above Soil-to-Groundwater (STGW)
Maximum Soil Contaminant Concentrations (MSCCs), were identified in the area of the UST
basin during site check activities. Laboratory analytical results of risk-based soil samples,
collected during various phases of assessment, did not detect target compound concentrations
above established STGW-MSCCs. Therefore, horizontally, the extent of impacted soil is in the
vicinity of the UST basin. Vertically, impacted soil extends to the water table. Historical soil
analytical data along with a map depicting the locations of the soil samples are provided in
Appendix A.

Overall, the dissolved contaminant concentrations of concern include dissolved benzene and
MTBE in monitoring wells MW-1, MW-4, MW-5, MW-6, and/or MW-9 associated with the
release. As a consequence of the assessment activities conducted at the facility, the horizontal
and vertical extents of dissolved petroleum hydrocarbon concentrations have been reasonably
defined. Light non-aqueous phase liquid (LNAPL) has not been associated with this release. A
geologic transect and geologic cross-sections with the July 2019 analytical data are included in
Appendix B.

In 2019, the dissolved benzene contaminant mass at the site was estimated to cover an area
approximately 6,500 square feet (ft2) resulting in:
• a calculated dissolved benzene mass of 0.0353 kilograms (kg);
• a calculated soil source zone benzene mass of 0 kg; and,
• a calculated smear source mass of 0 kg.
Monitoring Report December 1, 2022 NCDEQ Incident No. 42180
Page 2
These calculations resulted in a total mass baseline/milestone benzene concentration of 0.0353
kg.
Based on the most recent groundwater analytical data (October 2022), the dissolved benzene
contaminant mass at the site was estimated to cover an area approximately 3,200 ft2 resulting in a
calculated dissolved benzene mass of 0.0034 kg. To date, the dissolved benzene mass has
decreased at the site by approximately 90.368%.
ATC recommends continued semi-annual groundwater sampling and the installation and
maintenance of Biosocks in select monitoring wells to assist with natural attenuation activities.
3.0 SITE HISTORY
The underground storage tank (UST) system was installed at the site in 1991 and is currently
operational. The UST system includes two 8,000-gallon gasoline USTs and associated product
lines and dispensers.
On September 20, 2018, during onsite testing of the UST system, it was determined that the
regular and premium gasoline spill buckets were in need of repair as they did not pass their
respective hydrostatic tests. On October 3, 2018, Circle K personnel submitted a UST-17A:
UST Suspected Release 24 Hour Notice.
During site check activities, a soil sample was collected as close as possible to the regular
gasoline spill bucket (labeled SS-1) at a depth of thirteen feet below ground surface (bgs). A soil
sample was not able to be collected from soil boring SS-2 (premium spill bucket) as the parking
lot was resurfaced and the location of the previously cleared borehole as well as the utility
markings could not be determined.
Laboratory analytical results of the soil sample SS-1 did not detect Total Petroleum
Hydrocarbons (TPH) – Gasoline Range Organics (GRO) above laboratory method detection
limits (MDLs). Benzene and MTBE concentrations were detected above established
STGW-MSCCs in soil sample SS-1. On January 2, 2019, based on the soil analytical data, ATC
personnel submitted a UST-61: 24-Hour Release and UST Leak Reporting Form to NCDEQ.
Monitoring Report December 1, 2022 NCDEQ Incident No. 42180
Page 3
On January 4, 2019, a Site Check Report was submitted to the NCDEQ. On January 22, 2019, in
response to the Site Check Report, a Notice of Regulatory Requirements (NORR) was issued
requesting the preparation and submittal of a Limited Site Assessment (LSA) Report.
ATC performed Phase I LSA activities in February and March 2019. As part of the LSA
assessment, monitoring well MW-1 was installed and sampled. Based on the results of the LSA,
the NCDEQ requested a Comprehensive Site Assessment (CSA) in correspondence dated April
26, 2019.
Between April and July 2019, ATC conducted CSA activities at the site. A CSA Report was
submitted to the NCDEQ on September 30, 2019.
On July 28, 2021, the mid-grade spill bucket failed its hydrostatic test and a site check was
performed. Monitoring well MW-9 was installed in proximity to the failed spill bucket. A
groundwater sample collected from monitoring well MW-9 detected a dissolved benzene
concentration above its established 2L Standard. A Site Check Report was submitted to the
NCDEQ on October 19, 2021.
During previous assessment activities, twenty-four (24) water supply wells were identified
within 1,500 feet of the site. No water supply wells were identified within 500 feet of the source
area. Ten of the 24 water supply wells were identified between 500 and 1,000 feet of the source
area. Water supply information is summarized in Table 2 and depicted on Figure 3.
Public water supplies in the area are provided by Moore County Public Utilities Department.
Connection to the municipal water supply is not mandatory. The nearest surface water body is
located approximately 985 feet east of the source area. It appears this unnamed water body is
connected to an unnamed tributary of Long Leaf Lake. An unnamed tributary to Nicks Creek is
located approximately 2,000 feet south of the source area. Nicks Creek is the drinking water
source for the Town of Carthage and has a surface water classification of WS-III. The site is
located within the Cape Fear River Basin.
Monitoring Report December 1, 2022 NCDEQ Incident No. 42180
Page 4
The site and surrounding area are located outside the city limits of Carthage. The site is zoned
for commercial purposes. Surrounding properties are zoned commercial and residential.
Adjacent property owner information is included as Table 3. Figure 3 presents a map depicting the
surrounding area.
This report documents the results of a groundwater sampling event conducted during October
2022.
4.0 GROUNDWATER MONITORING
4.1 Geology and Hydrogeology
The subject facility lies along the western boundary of the Coastal Plain Physiographic Province
within the Sand Hills Region. Specifically, the site is located in the Middendorf Formation. The
Middendorf Formation generally consists of gray to light gray sandstones and mudstones with
orange mottling. Clay balls and iron-cemented concretions are abundant.
The surficial aquifer consists mostly of moderately to well-drained soil consisting of fine sand,
silty loam, and sandy clay loam. A significant percentage of clay is present in certain area. The
sediments that comprise the surficial aquifer in Moore County are generally of fluvial and littoral
origin and Cretaceous in age.
In this area, the Black Creek aquifer underlies the surficial aquifer in the area of the site. The
Black Creek Formation is comprised largely of clay with thin beds and laminae of fine-grained
micaceous sand and thick lenses of cross-bedded sand. Glauconitic, fossiliferous clayey sand
lenses occur in the upper part of the Formation. The surficial aquifer in the area varies in
thickness.
According to the United States Department of Agricultural Natural Resources Conversation
Service Web Soil Survey website, the site lies within the Ailey loamy sand (AeB) with 2 to 8
percent slopes. Ailey loamy sand consists of gently sloping, well-drained soils that formed from
weathered sandy and loamy marine deposits. This soil is on summits and crests of low hills. It
has a surface layer of loamy sand that is 0 to 3 inches thick. The subsoil is sand and is 27 to 30
Monitoring Report December 1, 2022 NCDEQ Incident No. 42180
Page 5
inches thick with sandy clay loam to 50 inches bgs and sandy loam below that. Available water
capacity is low. Depth to the seasonally high water table is greater than 80 inches.
Groundwater movement in the upper portion of the surficial aquifer appears to flow in a westerly
direction across the site. Based on available groundwater data, it appears there is a vertical head
difference between the shallow and deep monitoring well, which suggest that a vertical exchange
of groundwater may occur between the upper and lower portions of the surficial aquifer.
As part of the CSA, ATC performed a slug test using monitoring well MW-4. Based on the slug
test results, the average hydraulic conductivity at the site was calculated at approximately 3.1025
feet per day.
4.2 Groundwater Elevations
On October 27, 2022, ATC collected static water level measurements from monitoring wells
MW-1, MW-4, MW-6, and MW-9. Depths to water measurements were collected using an
electronic oil/water interface probe. The groundwater depths were converted to relative elevations
using an assumed datum of 100 feet relative to an arbitrary on-site benchmark. Monitoring well
construction details are included in Table 4. Current and historical groundwater elevation data are
included in Table 5. A groundwater elevation contour map based on the October 2022 static water
level data is included as Figure 4. Based on the recent groundwater level measurements,
groundwater flow appears to be toward the northwest. Historical groundwater flow maps are
provided in Appendix C.
4.3 Biosock Maintenance
On July 14, 2022 and October 27, 2022, ATC personnel installed biosocks in monitoring wells
MW-1, MW-4, MW-6, and MW-9 to assist with natural attenuation activities.
4.4 Groundwater Analytical Results
On October 27, 2022, groundwater samples were collected from monitoring wells MW-1,
MW-4, MW-6, and MW-9. Groundwater samples were collected into laboratory-approved
containers, packed in ice and delivered under chain-of-custody to SGS North America, Inc. in
Scott, Louisiana, for analyses. Groundwater samples were analyzed for volatile organic
Monitoring Report December 1, 2022 NCDEQ Incident No. 42180
Page 6
compounds (VOCs) via EPA Method 6200B to include ethanol and oxygenates. A summary of
the recent groundwater analytical data is presented in Table 6 and a historical summary of
groundwater analytical data is presented in Table 7.
The laboratory analytical results from the October 2022 sampling event indicated dissolved
target compound concentrations above established 2L Standards in the groundwater samples
collected from monitoring wells MW-1, MW-4, and MW-9. Select natural attenuation
measurements are provided in Table 8.
A dissolved benzene isoconcentration contour map is included as Figure 5. Dissolved
contaminants of concern, exceeding 2L Standards, are included as Figure 6. A copy of the
laboratory analytical report is included as Appendix D.
Groundwater concentration trend plots for dissolved benzene and MTBE concentrations through
time versus depth to water for monitoring wells MW-1, MW-4, and MW-6 are provided in
Figures 7, 8, and 9, respectively.
Overall, the dissolved contaminant concentrations of concern include dissolved benzene and
MTBE in monitoring wells MW-1, MW-4, MW-5, and/or MW-6 associated with the release. As
a consequence of the assessment activities conducted at the facility, the horizontal and vertical
extents of dissolved petroleum hydrocarbon concentrations have been reasonably defined.
LNAPL has not been associated with this release.
In 2019, the dissolved benzene contaminant mass at the site was estimated to cover an area
approximately 6,500 square feet (ft2) resulting in:
•a calculated dissolved benzene mass of 0.0353 kilograms (kg);
•a calculated soil source zone benzene mass of 0 kg; and,
•a calculated smear source mass of 0 kg.
These calculations resulted in a total mass baseline/milestone benzene concentration of 0.0353
kg.
Monitoring Report December 1, 2022 NCDEQ Incident No. 42180
Page 7
Based on the most recent groundwater analytical data (October 2022), the dissolved benzene
contaminant mass at the site was estimated to cover an area approximately 3,200 ft2 resulting in a
calculated dissolved benzene mass of 0.0034 kg. To date, the dissolved benzene mass has
decreased at the site by approximately 90.368%. The contaminant mass calculations are
provided in Table 9 and contaminant mass removal is provided in Table 10. Contaminant mass
versus time is provided in Appendix E.
5.0 MONITORING PLAN AND SCHEDULE
ATC recommends continued semi-annual groundwater sampling and the installation and
maintenance of Biosocks in select monitoring wells to assist with natural attenuation activities.
6.0 CONCLUSIONS
ATC has performed a groundwater sampling event at the Circle K Store #2723842 facility
located in Carthage, North Carolina. Based on field activities, observations, and groundwater
analytical results, ATC concludes the following:
•Depth to groundwater measurements ranged from 4.53 feet to 8.66 feet below ground surface
MW-6 and MW-9, respectively. Based on information obtained during the October 2022
sampling event, groundwater appears to flow across the site in a northwesterly direction;
•Horizontally, the extent of impacted soil is in the vicinity of the UST system. Vertically,
impacted soil extends to the water table;
•The laboratory analytical results from the October 2022 sampling event indicated dissolved
target compound concentrations above established 2L Standards in several of the monitoring
wells sampled;
•The dissolved benzene contaminant mass at the site was estimated to cover an area
approximately 3,200 ft2 resulting in a calculated dissolved benzene mass of 0.0034 kg; and,
•To date, the dissolved benzene mass has decreased at the site by approximately 90.368%.
ATC recommends continued semi-annual groundwater sampling and the installation and
maintenance of Biosocks in select monitoring wells to assist with natural attenuation
activities.

TABLES
TABLE 1
UST SYSTEM INFORMATION
CIRCLE K STORE #2723842
7249 US HIGHWAY 15-501
CARTHAGE, MOORE COUNTY, NORTH CAROLINA
NCDEQ INCIDENT No. 42180
UST ID
Number Product Capacity
(gallons)
Date
Installed
Date taken out of
Use
Date
Permanently
Closed
Was Release
Associated With
UST System?
1 Gasoline 8,000 1/1/1991 Currently in Use Not Applicable Yes
2 Gasoline 8,000 1/1/1991 Currently in Use Not Applicable Yes
Facility ID
No.
Owner or
Operator?
0-032404 Owner/Operator
Name of Owner or Operator Dates of Ownership / Operation
Circle K Stores, Inc.1991 to Present
Address Telephone Number
1100 Situs Court, Suite 100 919-774-6700
Raleigh, North Carolina 27606
TABLE 2WATER SUPPLY WELL INFORMATION
CIRCKLE K STORE #27238427249 US HIGHWAY 15-501CARTHAGE, MOORE COUNTY, NORTH CAROLINANCDEQ INCIDENT NO. 42180
PIN Number Well ID Well Owner Name and Mailing Address Well Physical Location Connected to Public Water Water Supply Well Present Water Supply Well Use Distance for source area release (feet)
Andrew and Allison Bailey111 Newcastle DriveCarthage, NC 28327Christopher A. Jones113 Newcastle DriveCarthage, NC 28327Robert and Kathleen Bessler109 Newcastle DriveCarthage, NC 28327Zachary P. King101 Newcastle CourtCarthage, NC 28327
Lisa C. Kyle
103 Newcastle Court
Carthage, NC 28327
Timothy and Kelly Curran
447 Brinkley Road
Carthage, NC 28327
Carla L. Boyd c/o Carla Furr
184 Indian Springs Lane
Carthage, NC 28327
Wesley and Claudia Cole
160 Indian Springs LaneCarthage, NC 28327Barbara Bate and Delores Tune4353 Wood Forest DriveRock Hill, NC 29732Winston and Phyllis Taylor125A NC Highway 73West End, NC 27376Richard Lea154 Mopar LaneCarthage, NC 28327Robin Lea4517 Union Church RoadCarthage, NC 28327Wade Huddleston c/o Irene Duncan
153 Mopar Lane
Carthage, NC 28327
Richard Lea
154 Mopar Lane
Carthage, NC 28327
Dusty Duncan
135 Mopar Lane
Carthage, NC 28327
Jamie Lynn Perkins
216 Hwy 73
West End, NC 27376
Larry Black180 Hwy 73West End, NC 27376J. Wayne Lea c/o Donald Williams841 Esther RoadWest End, NC 27376Norma Adams1760 McCaskill RoadCarthage, NC 28327James Thomas139 Dundee DriveCarthage, NC 28327Shannon Orwin109 Dundee DriveCarthage, NC 28327
Teresa Taylor
165 Edinburgh Drive
Carthage, NC 28327
Jane Liddell
163 Edinburgh Drive
Carthage, NC 28327
Danny Williams
106 Edinburgh Drive
Carthage, NC 28327
1,245 feet north
856408897383 24 106 Edinburgh Drive No Yes Drinking 1,262 feet north
856408899197 23 163 Edinburgh Drive No Yes Drinking
1,140 feet north
856408898152 22 165 Edinburgh Drive No Yes Drinking 1,082 feet north
856408990020 21 109 Dundee Drive No Yes Drinking
1,302 feet southeast
856408981686 20 139 Dundee Drive No Yes Drinking 1,105 feet northeast
856412972375 19 1760 McCaskill Road No Yes Drinking
1,114 feet southwest
856411774120 18 148 Lea Road No Yes Drinking 1,313 feet south
856407772820 17 180 NC Highway 73 No Yes Drinking
1,317 feet west
856407678709 16 216 NC Highway 73 No Yes Drinking 1,450 feet southwest
856407678986 15 135 Mopar Lane No Yes Drinking
1,362 feet west
856407782016 14 130 Mopar Lane No Yes Drinking 1,078 feet west
856407688180 13 153 Mopar Lane No Yes Drinking
1,200 feet west
856407782305 12 150 Mopar Lane No Yes Drinking 1,066 feet west
856407689302 11 154 Mopar Lane No Yes Drinking
562 feet southwest
856400776590 10 125 NC Highway 73 No Yes Drinking 884 feet southwest
815 feet west
856408785219 8 160 Indian Springs Lane No Yes Drinking 879 feet west
106 Dundee Drive No Yes Drinking 912 feet northeast
856408785418 7 184 Indian Springs Lane No Yes
Drinking 794 feet northeast
856408980548 5 103 Newcastle Court No Yes Drinking 882 feet northeast
109 Newcastle Drive No Yes Drinking 548 feet east
856408888666 4 101 Newcastle Court No Yes
564 feet east
856408879909 2 113 Newcastle Drive No Yes Drinking 638 feet east
Drinking
856408777907 9 124 NC Highway 73 No Yes Drinking
Drinking
856408980707 6
856408888321 3
856408888157 1 111 Newcastle Drive No Yes
TABLE 3
ADJACENT PROPERTY OWNER INFORMATION
CIRCLE K STORE #27238427249 US HIGHWAY 15-501
CARTHAGE, MOORE COUNTY, NORTH CAROLINANCDEQ INCIDENT NO. 42180
Property Location and Address Owner's Name and Address Zoning/Parcel Identification Number
Site
Circle K Store Commercial Net Lease Realty Business (B-2)
7249 US Highway 15-501 450 S. Orange Ave, Suite 900 PIN: 856408884184
Carthage, NC 28327 Orlando, FL 32801
North of Site
Vacant/Undeveloped Planet Development, LLC Business (B-2)
US Highway 15-501 675 S. Bennett St, Suite 4 PIN: 856400884357
Carthage, NC 28327 Southern Pines, NC 28387
West of Site
Residential (Undeveloped)Thomas and Elizabeth Anderson Residential (RA-40)
US Highway 15-501 11021 Seven Coves Drive PIN: 856408789108
Carthage, NC 28327 Fort Mill, SC 29708
East of Site
Residential Andrew and Allison Bailey Residential (RA-20)
111 New Castle Drive 111 New Castle Drive PIN: 856408888157
Carthage, NC 28327 Carthage, NC 28327
East of Site
Residential Christopher A. Jones Residential (RA-20)
113 New Castle Drive 113 New Castle Drive PIN: 856408879909
Carthage, NC 28327 Carthage, NC 28327
South of Site
Tim's Auto Repair James and Ann Medlia Business (B-2)
7289 US Highway 15-501 1275 Doubs Chapel Road PIN: 856408875947
Carthage, NC 28327 West End, NC 27376
Notes:
1. Zoning Classifications indicate those assigned by Moore County.
TABLE 4
MONITORING WELL CONSTRUCTION DETAILS
CIRCLE K STORE #2723842
7249 US HIGHWAY 15-501
CARTHAGE, MOORE COUNTY, NORTH CAROLINA
NCDEQ INCIDENT NO. 42180
MW-1 2/27/2019 2 5-20 20.0
MW-2 5/29/2019 2 2-12 12.0
MW-3 5/29/2019 2 2-12 12.0
MW-4 5/29/2019 2 2-12 12.0
MW-5 8/22/2019 2 2-12 12.0
MW-6 8/22/2019 2 2-12 12.0
MW-7 8/22/2019 2 2-12 12.0
MW-8 8/22/2019 2 2-12 12.0
MW-9 8/31/2021 2 2-12 12.0
DW-1 5/28-29/2019 6/2 30-35 35.0
Monitoring
Well ID
Date
Installed
Well
Casing
Diameter
Screened
Interval
(feet)
Depth of Well
(feet)
TABLE 5
GROUNDWATER ELEVATIONS AND HISTORICAL DATA
CIRCLE K STORE #2723842
7249 US HIGHWAY 15-501
CARTHAGE, MOORE COUNTY, NORTH CAROLINA
NCDEQ INCIDENT NO. 42180
3/21/2019 5.66 --94.34
5/30/2019 6.03 --93.97
8/26/2019 7.06 --92.94
8/17/2020 3.45 --96.55
2/16/2021 4.69 --95.31
9/15/2021 7.92 --92.08
3/21/2022 3.38 --96.62
10/27/2022 7.82 --92.18
5/30/2019 3.99 --93.70
8/26/2019 4.07 --93.62
8/17/2020 3.46 --94.23
2/16/2021 2.44 --95.25
9/15/2021 5.48 --92.21
3/21/2022
10/27/2022
5/30/2019 Dry --Dry
8/26/2019 4.89 --96.34
8/17/2020 3.80 --97.43
2/16/2021 4.17 --97.06
9/15/2021
3/21/2022
10/27/2022
5/30/2019 5.92 --93.06
8/26/2019 6.20 --92.78
8/17/2020 5.09 --93.89
2/16/2021 4.77 --94.21
9/15/2021 6.40 --92.58
3/21/2022 5.27 --93.71
10/27/2022 6.40 --92.58
8/26/2019 6.06 --93.06
8/17/2020 5.30 --93.82
2/16/2021 4.76 --94.36
9/15/2021 6.26 --92.86
3/21/2022
10/27/2022 Well Not Measured
99.12
Well Not Measured
Well Not Measured
Well Not Measured
MW-5
MW-2 97.69
MW-3 101.23
MW-4 98.98
MW-1 100.00
Groundwater
Elevation (feet)
Monitoring
Well ID
Date
Measured
Top of Casing
(feet)
Depth of
Water (feet)
Depth to
LNAPL (feet)
Well Not Measured
Well Not Measured
Well Not Measured
TABLE 5
GROUNDWATER ELEVATIONS AND HISTORICAL DATA
CIRCLE K STORE #2723842
7249 US HIGHWAY 15-501
CARTHAGE, MOORE COUNTY, NORTH CAROLINA
NCDEQ INCIDENT NO. 42180
MW-1 100.00
Groundwater
Elevation (feet)
Monitoring
Well ID
Date
Measured
Top of Casing
(feet)
Depth of
Water (feet)
Depth to
LNAPL (feet)
8/26/2019 4.68 --91.64
8/17/2020 3.44 --92.88
2/16/2021 2.79 --93.53
9/15/2021 4.57 --91.75
3/21/2022 3.67 --92.65
10/27/2022 4.53 --91.79
8/26/2019 5.14 --90.67
8/17/2020 3.73 --92.08
2/16/2021 2.89 --92.92
9/15/2021 5.01 --90.80
3/21/2022
10/27/2022
8/26/2019 9.26 --92.41
8/17/2020 6.88 --94.79
2/16/2021 2.75 --98.92
9/15/2021
3/21/2022
10/27/2022
9/28/2021 6.81 --94.14
3/21/2022 5.83 --95.12
10/27/2022 8.66 --92.29
5/30/2019 8.48 --92.72
8/17/2020 7.78 --93.42
2/16/2021 6.11 --95.09
9/15/2021
3/21/2022
10/27/2022
Notes:
1. Elevations are referenced to an arbitrary on-site benchmark of 100.00 feet.
2. Total well depths measured from top of casing.
3. LNAPL denotes light non-aqueous phase liquid.
100.95
Well Not Measured
Well Not Measured
Well Not MeasuredDW-1
96.32
95.81
101.67
101.20
MW-6
MW-7
MW-8
MW-9
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
Well Not Measured
TABLE 6CURRENT GROUNDWATER ANALYTICAL RESULTS
CIRCLE K STORE #2723842
7249 US HIGHWAY 15-501
CARTHAGE, MOORE COUNTY, NORTH CAROLINANCDEQ INCIDENT NO. 42180
Well ID
Date Collected
MW-1 10/27/2022 0.91 <0.50 0.35J 0.99 71.1 <0.50 4.5 5.2J <0.50 0.19J 382 <0.20 0.68J 0.53 <0.50 <0.50 <0.30 <0.50 <0.50
MW-4 10/27/2022 6.6 <5.0 272 506 <5.0 348 <5.0 <100 <5.0 <5.0 <100 <2.0 <10 26.1 88.5 <5.0 <3.0 838 159
MW-6 10/27/2022 <0.50 0.72 0.28J 0.23J <0.50 2.6 4.0 <10 0.21J 0.36J <10 <0.20 1.8 0.21J <0.50 40.4 0.19J 0.47J <0.50
MW-9 10/27/2022 5.2 <0.50 <0.50 <0.50 6.8 0.17J 0.69 35.3 <0.50 <0.50 <10 0.52 <1.0 <0.50 <0.50 <0.50 <0.30 <0.50 <0.50
1 600 600 500 20 6 70 6,000 70 70 10 0.4 128 70 70 88 0.6 400 400
5,000 260,000 80,000 50,000 20,000 6,000 70,000 6,000,000 5,900 8,800 10,000 400 128,000 30,500 26,100 88,000 600 28,500 24,100
Notes:
1. "<" or ND = Not detected at or above the laboratory detection limit.
2. Concentrations are reported in micrograms per liter (mg/l) = parts per billion.
3. Concentrations in bold print equal or exceed the NCDEQ 2L Standard (2L).
4. NCDEQ = North Carolina Department of Environmental Quality.
5. GCL = Gross Contaminantion Level.
6. NE = Not Established.
7. MTBE = Methyl Tertiary Butyl Ether.
8. J denotes concentratoin estimated by project laboratory.1,3,5-TrimethylbenzeneIsopropylbenzeneAnalytical Method MTBEBenzeneTotal Xylenesn-ButylbenzeneEPA Method 6200B
IPEGCL (mg/l)
Contaminant of Concern
sec-ButylbenzeneNaphthaleneEthylbenzeneToluene2L Standard (mg/l)1,2-Dichloroethane1,2,4-TrimethylbenzeneAcetonen-PropylbenzeneTert-Butyl AlcoholTert-Amyl Methyl Ether1,1,2-TrichloroethaneVinyl AcetatePage 7 of 13
TABLE 7
HISTORICAL GROUNDWATER ANALYTICAL RESULTS
CIRCLE K STORE #27238427249 US HIGHWAY 15-501CARTHAGE, MOORE COUNTY, NORTH CAROLINANCDEQ INCIDENT NO. 42180
Well ID
Date
Collected
3/21/2019 49.3 <5.0 <5.0 6.8 596 7.2 11.2
8/17/2020 41.9 <5.0 <5.0 <5.0 411 5.0 29.2
2/16/2021 91.1 <0.50 11.4 2.6 72.8 1.5 41.0
9/15/2021 11.3 0.31J 2.5 0.43J 302 1.5 16.5
3/21/2022 10.5 2.95 5.51 10.7 80.4 3.00 18.3
10/27/2022 0.91 <0.50 0.35J 0.99 71.1 <0.50 4.5
5/30/2019 <0.50 <0.50 <0.50 <0.50 32.8 <0.50 <0.50
8/17/2020 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
2/16/2021 <0.50 <0.50 <0.50 <0.50 1.4 <0.50 <0.50
9/15/2021 <0.50 <0.5 <0.50 <0.50 0.94 <0.50 <0.50
3/21/2022
10/27/2022
8/26/2019 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
8/17/2020 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
2/16/2021 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
9/15/2021
3/21/2022
10/27/2022
5/30/2019 8.7 16.0 179 607 1.7 210 <0.50
8/17/2020 13.8 5.8 <0.50 42.1 9.0 <0.50 <0.50
2/16/2021 22.2 13.7 325 749 4.0 <0.50 0.98
9/15/2021 6.7 4.1 214 521 1.4J 324 <2.5
3/21/2022 9.49 9.31 335 653 1.50 412 <0.500
10/27/2022 6.6 <5.0 272 506 <5.0 348 <5.0
8/26/2019 <0.50 <0.50 <0.50 <0.50 23.8 <0.50 <0.50
8/17/2020 <0.50 <0.50 <0.50 0.67 21.0 4.4 <0.50
2/16/2021 <0.50 <0.50 <0.50 <0.50 29.7 <0.50 0.51
9/15/2021 0.39J 9.0 0.55 2.4 12.0 1.1 0.28J
3/21/2022
10/27/2022
8/26/2019 1.0 <0.50 <0.50 <0.50 97.3 2.2 7.5
8/17/2020 0.66 <0.50 <0.50 <0.50 140 1.6 5.9
2/16/2021 2.7 <0.50 <0.50 0.55 187 1.5 8.6
9/15/2021 <0.50 0.31J 0.22J 0.42J 94.4 3.2 6.6
3/21/2022 0.600 3.17 <0.170 <0.21 80.8 1.02 3.30
10/27/2022 <0.50 0.72 0.28J 0.23J <0.50 2.6 4.0
8/26/2019 <0.50 <0.50 <0.50 <0.50 20.8 <0.50 <0.50
8/17/2020 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
2/16/2021 <0.50 <0.50 <0.50 <0.50 1.3 <0.50 <0.50
9/15/2021 <0.50 <0.50 <0.50 <0.50 1.1 <0.50 <0.50
3/21/2022
10/27/2022
8/26/2019 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
8/17/2020 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
2/16/2021 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
9/15/2021
3/21/2022
10/27/2022
9/28/2021 4.2 0.63 <0.50 0.30J 4.6 <0.50 0.36J
3/21/2022 6.84 <0.220 <0.170 <0.21 8.86 <0.470 0.531
10/27/2022 5.2 <0.50 <0.50 <0.50 6.8 0.17J 0.69
5/30/2019 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
8/17/2020 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
2/16/2021 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50
9/15/2021
3/21/2022
10/27/2022
1 600 600 500 20 6 70
5,000 260,000 80,000 50,000 20,000 6,000 70,000
Notes:
1. "<" or ND = Not detected at or above the laboratory detection limit.
2. Concentrations are reported in micrograms per liter (mg/l) = parts per billion.
3. Concentrations in bold print equal or exceed the NCDEQ 2L Standard (2L).
4. N4. N
5. GCL = Gross Contaminantion Level.
6. NE = Not Established.
7. MTBE = Methyl Tertiary Butyl Ether.
8. J denotes concentratoin estimated by project laboratory.
Well Not Sampled
Well Not Sampled
Well Not Sampled
Analytical Method EPA Method 6200B
Contaminant of Concern
BenzeneTolueneEthylbenzeneTotal XylenesMTBEMW-8
DW-1
2L Standard (mg/l)
MW-5
MW-6
GCL (mg/l)
MW-9
MW-7
MW-1
MW-2
MW-3
MW-4 NaphthaleneWell Not Sampled
Well Not Sampled
Well Not Sampled
Well Not Sampled IPEWell Not Sampled
Well Not Sampled
Well Not Sampled
Well Not Sampled
Well Not Sampled
Well Not Sampled
Well Not Sampled
Well Not Sampled
Page 8 of 13
TABLE 8
SELECT NATURAL ATTENUATION MEASUREMENTS
CIRCLE K STORE #2723842
7249 US HIGHWAY 15-501CARTHAGE, MOORE COUNTY, NORTH CAROLINA
NCDEQ INCIDENT NO. 42180
Monitoring
Well ID Date pH
(unitless)
Dissolved
Oxygen (mg/L)
Specific
Conductivity (µs/cm)
Temperature
(Celsius)ORP (mV)
8/17/2020 5.49 0.41 0.146 23.04 65.9
2/16/2021 5.78 0.87 0.223 15.88 175.6
9/15/2021
3/21/2022 7.04 4.76 0.22 18.37 153.2
10/27/2022
8/17/2020 6.74 3.96 0.138 22.13 213.3
2/16/2021 6.12 7.02 0.095 14.17 220.9
9/15/2021 5.16 1.98 0.061 24.4 221.4
3/21/2022
10/27/2022
8/17/2020 7.1 1.36 0.060 26.72 -75.4
2/16/2021 6.09 1.23 0.063 16.47 179.1
9/15/2021
3/21/2022
10/27/2022
8/17/2020 5.86 0.65 0.098 27.19 97.8
2/16/2021 6.32 0.89 0.094 15.74 105.5
9/15/2021
3/21/2022 6.97 1.36 0.12 17.63 196.0
10/27/2022
8/17/2020 5.49 0.38 0.189 26.43 33.7
2/16/2021 6.68 1.10 0.310 16.08 54.9
9/15/2021 6.00 0.59 0.266 28.3 -12.1
3/21/2022
10/27/2022
8/17/2020 5.71 0.32 0.337 26.07 -2.7
2/16/2021 6.1 0.94 0.408 14.72 117.3
9/15/2021 5.90 0.85 0.278 28.9 9.2
3/21/2022 6.92 0.90 0.377 17.48 165.3
10/27/2022
8/17/2020 5.83 1.29 0.046 22.13 252.4
2/16/2021 5.96 3.51 0.043 13.39 247.7
9/15/2021 4.64 0.78 0.066 24.5 225.1
3/21/2022
10/27/2022
8/17/2020 7.56 3.27 0.021 22.72 221.9
2/16/2021 5.96 7.73 0.021 14.23 235.3
9/15/2021
3/21/2022
10/27/2022
9/15/2021
3/21/2022 6.98 3.76 0.069 18.17 217.0
10/27/2022
8/17/2020 9.25 1.58 0.041 21.79 133.1
2/16/2021 6.43 3.50 0.035 20.28 112.5
9/15/2021
3/21/2022
10/27/2022 Well Not Measured
Well Not Measured
Well Not Measured - Petro Odor
Well Not Measured
Well Not Measured
Well Not Measured - Petro Odor
Well Not Measured
Well Not Measured
Well Not Measured
DW-1
MW-1
MW-2
MW-3
MW-4
MW-5
MW-6
MW-9
MW-7
MW-8
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
TABLE 9
CONTAMINANT MASS CALCULATIONS (Benzene)
CIRCLE K STORE #27238427249 U.S. HIGHWAY 15-501
CARTHAGE, MOORE COUNTY, NORTH CAROLINA
NCDEQ INCIDENT NO. 42180
Year Area (FT^2)*Thickness (FT) Effective Porosity Volume (FT^3) Volume (L)
Benzene
Concentration
(ug/L**)Mass (kg)
2019 6,500 8.78 0.37 21,115.90 597,894 59 0.0353
2020 4,800 10.67 0.37 18,949.92 536,564 56 0.0299
2021 6,500 10.58 0.37 25,444.90 720,469 116 0.0836
2021 4,250 8.23 0.37 12,941.68 366,442 22 0.0081
2022 4,950 9.84 0.37 18,021.96 510,289 27 0.0137
2022 3,200 8.65 0.37 10,241.60 289,990 12 0.0034
Notes:
Area (FT^2)*Thickness (FT)Density (gm/cm^3)Volume (FT^3)Volume (cm^3)Mass (kg)
Benzene
Concentration
(mg/kg)**
Mass Benzene
(kg)
----------------
Notes:
* Area based on groundwater impact above 2L Standard.
Area (FT^2)*Thickness (FT)**Density (gm/cm^3)Volume (FT^3)Volume (cm^3)Mass (kg)
Benzene Concentration
(mg/kg)**
Mass Benzene
(kg)
----------------
Notes:
** Sum of benzene concentrations in source area
** Sum of benzene concentrations in source area
* Area based on groundwater impact above 2L Standard.
** Smear zone average for soil borings in area above 2L Standard.
BENZENE MASS CONCENTRATIONS (Groundwater)
SOIL SOURCE ZONE MASS CONCENTRATIONS (BENZENE)
SMEAR SOIL SOURCE ZONE MASS CONCENTRATIONS (BENZENE)
* Area based on groundwater impact in source area for benzene exceeding 2L Standard.
** Sum of benzene concentrations in source area exceeding 2L Standard.
TABLE 10
CONTAMINANT MASS REMOVAL (Benzene)
CIRCLE K STORE #2723842
7249 U.S. HIGHWAY 15-501CARTHAGE, MOORE COUNTY, NORTH CAROLINA
NCDEQ INCIDENT NO. 42180
Initial Mass Estimate
Initial
Baseline
(2019)
Projected Mass Reduction %0
Soil Source Zone Mass (kg)NM
Smear Source Mass (kg)NM
Groundwater Zone Mass (kg)0.0353
Total Mass: Baseline/Milestone (kg)0.0353
2021 2021 2022 2022
Measured Mass
Soil Source Zone (kg)NM NM NM NM
Smear Source Zone (kg)NM NM NM NM
Groundwater Zone (kg)0.0836 0.0081 0.0137 0.0034
Removed Mass
Excavated From Soil/Smear (kg)NM NM NM NM
Extracted as Vapor/Gas (kg)NM NM NM NM
Extracted as Liquid (kg)-0.0483 0.0272 0.0216 0.0319
Total Mass Removed (kg)-0.0483 0.0272 0.0216 0.0319
Revised Total Mass (kg)0.0836 0.0081 0.0137 0.0034
Estimated Reduction Rate -136.827%77.054%61.190%90.368%
Reference Milestone (Label)Baseline Baseline Baseline Baseline
Reference Milestone (Value)0.0353 0.0353 0.0353 0.0353
Reduction Progress vs Milestone NM NM NM NM
0.0054
Evaluation of Change in Benzene Contaminant Mass
Milestones
Milestone Sampling Measurement Event Dates
2020
NM
NM
0.0299
NM
NM
0.0054
0.0299
15.297%
Baseline
0.0353
NM

FIGURES
MW-7MW-2MW-8MW-1DW-1MW-4MW-5MW-3USTBASINDISPENSERCANOPYCIRCLE K#2723842PROPERTY BOUNDARYMW-6MW-9
MW-7MW-2MW-8MW-1DW-1MW-4MW-5MW-3USTBASINDISPENSERCANOPYCIRCLE K#2723842PROPERTY BOUNDARYMW-6MW-992.18NM92.5891.7992.29NMNMNMNMNM91.7592.0092.
2
592.50
MW-7MW-2MW-8MW-1DW-1MW-4MW-5MW-3USTBASINDISPENSERCANOPYCIRCLE K#2723842PROPERTY BOUNDARYMW-6MW-96.6NS0.91<0.505.2NSNSNSNSNSNS1
MW-7MW-2MW-8MW-1DW-1MW-4MW-5MW-3USTBASINDISPENSERCANOPYCIRCLE K#2723842PROPERTY BOUNDARYMW-6MW-9NSNSNSNSNSNSNS
CIRCLE K STORE #2723842
7249 US HIGHWAY 15-501
CARTHAGE, MOORE COUNTY, NORTH CAROLINA
NCDEQ INCIDENT NO. 42180
0.00
1.00
2.00
3.00
4.00
5.00
6.00
7.00
8.00
9.00
0
100
200
300
400
500
600
700
3/21/2019 8/17/2020 2/16/2021 9/15/2021 3/21/2022 10/27/2022 Depth to Water (feet)Dissolved Contaminant Concentrations (ug/L)Date
Figure 7
MW-1: Dissolved Benzene and MTBE Concentrations through Time versus Depth to
Water
Dissolved Benzene
Dissolved MTBE
Depth to Water
CIRCLE K STORE #2723842
7249 US HIGHWAY 15-501
CARTHAGE, MOORE COUNTY, NORTH CAROLINA
NCDEQ INCIDENT NO. 42180
0.00
1.00
2.00
3.00
4.00
5.00
6.00
7.00
0
5
10
15
20
25
5/30/2019 8/17/2020 2/16/2021 9/15/2021 3/21/2022 10/27/2022 Depth to Water (feet)Dissolved Contaminant Concentrations (ug/L)Date
Figure 8
MW-4: Dissolved Benzene and MTBE Concentrations through Time versus Depth to
Water
Dissolved Benzene
Dissolved MTBE
Depth to Water
CIRCLE K STORE #2723842
7249 US HIGHWAY 15-501
CARTHAGE, MOORE COUNTY, NORTH CAROLINA
NCDEQ INCIDENT NO. 42180
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
4.00
4.50
5.00
0.0
20.0
40.0
60.0
80.0
100.0
120.0
140.0
160.0
180.0
200.0
8/26/2019 8/17/2020 2/16/2021 9/15/2021 3/21/2022 10/27/2022 Depth to Water (feet)Dissolved Contaminant Concentrations (ug/L)Date
Figure 9
MW-6: Dissolved Benzene and MTBE Concentrations through Time versus
Depth to Water
Dissolved Benzene
Dissolved MTBE
Depth to Water

APPENDIX A

HISTORICAL SOIL ANALYTICAL DATA
AND SOIL SAMPLE LOCATION MAP
TABLE 7
SOIL ANALYTICAL DATA
CIRCLE K STORE #2723842
7249 US HIGHWAY 15-501
CARTHAGE, MOORE COUNTY, NORTH CAROLINA
NCDEQ FACILITY ID NO. 0-032404
NCDEQ INCIDENT NO. 42180
8015
Sample ID Sample
Depth Date Collected
SS-1 13 12/18/2018 <6.6 0.0103 <0.0051 0.0014 <0.0021 0.131 <0.0051 <0.0051 <0.0051 <0.0051 <0.013 <0.051
MW-2 5-6 5/29/2019 <5.9 <0.00043 <0.0043 <0.00087 <0.0017 <0.00087 <0.0043 <0.0043 <0.0043 <0.0043 <0.011 0.0729
MW-3 2-3 5/29/2019 <6.0 <0.00048 <0.0048 <0.00097 <0.0019 <0.00097 <0.0048 <0.0048 <0.0048 <0.0048 <0.012 0.272
MW-4 5-6 5/29/2019 <5.8 0.0018 <0.0048 0.0520 0.0076 0.0035 0.102 0.0081 0.0316 0.0064 0.0188 0.212
50 NE NE NE NE NE NE NE NE NE NE NE
NE 0.0056 4.3 4.9 4.6 0.091 0.16 4.3 1.7 1.7 16 24
NE 18 1,200 1,560 3,129 350 313 626 626 1,564 9,385 14,000
NE 164 32,000 40,000 81,760 3,100 8,176 16,350 16,350 40,880 245,280 360,000
Notes:
1. MSCC = Maximum Soil Contaminant Concentrations.
2. Concentrations in bold print equal or exceed the Soil-to-Groundwater MSCCs.
3. Concentrations are reported in milligrams per kilogram (mg/kg) = parts per million.
4. "<" = None detected above method detection limit.
5. NE = No Established Standard
6. NCDEQ = North Carolina Department of Environmental Quality.
NCDEQ Action Level
Soil-to-Groundwater MSCCs n-PropylbenzeneBenzeneIndustrial/Commercial MSCCs MTBEResidential MSCCs
Contaminant of Concern
NaphthaleneEPA Analytical Method
EthylbenzeneTolueneTotal Xylenesn-Butylbenzene2-Butanone (Methyl Ethyl Ketone)Isopropylbenzene8260
AcetoneTPH - GRO
PROJECT NO.
NOTES:
1. Features shown are not an authoritative location, nor are they
presented to a stated accuracy.
2. MSCC = Maximum Soil Contaminant Concentrations.
3. Only concentrations exceeding the Soil-to-Groundwater
MSCCs are shown.
4. Concentrations are reported in milligrams per kilogram (mg/kg)
= parts per million.
5. NS = Not sampled
DATE
TITLE
SCALEREV. BYPREP. BYCAD FILECOORDINATE SYSTEM:
NAD 1983 NORTH CAROLINA STATE PLANE FIPS 3200, US
SURVEY FEET
[phone]Raleigh, North Carolina, 27604
ATC Associates of North Carolina, P.C.

APPENDIX B

GEOLOGIC TRANSECT AND
CROSS-SECTION MAPS (2019)
PROJECT NO.
NOTES:
1. Features shown are not an authoritative location, nor are they
presented to a stated accuracy.
DATE
TITLE
SCALEREV. BYPREP. BYCAD FILECOORDINATE SYSTEM:
NAD 1983 NORTH CAROLINA STATE PLANE FIPS 3200, US
SURVEY FEET
[phone]Raleigh, North Carolina, 27604
ATC Associates of North Carolina, P.C.
PROJECT NO.
NOTES:
1. Features shown are not an authoritative location, nor are they
presented to a stated accuracy.
2. Only concentrations exceeding 2L Standards are shown.
3. µg/L = Micrograms per liter
DATE
TITLE
SCALEREV. BYPREP. BYCAD FILECOORDINATE SYSTEM:
NAD 1983 NORTH CAROLINA STATE PLANE FIPS 3200, US
SURVEY FEET
[phone]Raleigh, North Carolina, 27604
ATC Associates of North Carolina, P.C.
PROJECT NO.
NOTES:
1. Features shown are not an authoritative location, nor are they
presented to a stated accuracy.
2. Only concentrations exceeding 2L Standards are shown.
3. µg/L = Micrograms per liter
DATE
TITLE
SCALEREV. BYPREP. BYCAD FILECOORDINATE SYSTEM:
NAD 1983 NORTH CAROLINA STATE PLANE FIPS 3200, US
SURVEY FEET
[phone]Raleigh, North Carolina, 27604
ATC Associates of North Carolina, P.C.
PROJECT NO.
NOTES:
1.Features shown are not an authoritative location, nor are they
presented to a stated accuracy.
DATE
TITLE
SCALEREV. BYPREP. BYCAD FILECOORDINATE SYSTEM:
NAD 1983 NORTH CAROLINA STATE PLANE FIPS 3200, US
SURVEY FEET
[phone]Raleigh, North Carolina, 27604
ATC Associates of North Carolina, P.C.SouthwestNortheast

APPENDIX C
HISTORICAL GROUNDWATER
ELEVATION CONTOUR MAPS

PROJECT NO.
NOTES:
1. Features shown are not an authoritative location, nor are they
presented to a stated accuracy.
2. Groundwater elevations were measured on 5/30/2019.
3. Deep monitoring well DW-1 was not used to construct
contours.
DATE
TITLE
SCALEREV. BYPREP. BYCAD FILECOORDINATE SYSTEM:
NAD 1983 NORTH CAROLINA STATE PLANE FIPS 3200, US
SURVEY FEET
[phone]Raleigh, North Carolina, 27604
ATC Associates of North Carolina, P.C.
PROJECT NO.
NOTES:
1. Features shown are not an authoritative location, nor are they
presented to a stated accuracy.
2. Groundwater elevations measured 8/26/2019.
3. MW-2 and DW-1 not used to construct contours.
DATE
TITLE
SCALEREV. BYPREP. BYCAD FILECOORDINATE SYSTEM:
NAD 1983 NORTH CAROLINA STATE PLANE FIPS 3200, US
SURVEY FEET
[phone]Raleigh, North Carolina, 27604
ATC Associates of North Carolina, P.C.
MW-7MW-2MW-8MW-1DW-1MW-4MW-5MW-3USTBASINDISPENSERCANOPYFORMERPANTRY #3842STOREPROPERTY BOUNDARYMW-692.0894.2394.7997.4393.4296.5592.8893.8993.8297.096.095.094.0
9
3
.
0
MW-7MW-2MW-8MW-1DW-1MW-4MW-5MW-3USTBASINDISPENSERCANOPYCIRCLE K#2723842PROPERTY BOUNDARYMW-692.9295.2598.9297.0695.0995.3193.5394.2194.3693.094.0
95.096.097.098.0
MW-7MW-2MW-8MW-1DW-1MW-4MW-5MW-3USTBASINDISPENSERCANOPYCIRCLE K#2723842PROPERTY BOUNDARYMW-6MW-992.0894.092.21NM92.5892.8691.7590.8094.14NMNM93.092.0 91.0
MW-7MW-2MW-8MW-1DW-1MW-4MW-5MW-3USTBASINDISPENSERCANOPYCIRCLE K#2723842PROPERTY BOUNDARYMW-6MW-996.62NM93.7192.6595.12NMNM93.0NMNMNM93.594.094.595.095.596.096.5

APPENDIX D

LABORATORY ANALYTICAL RESULTS
11/16/22
Technical Report for
Atlas
2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, NC
SGS Job Number: LA84794
Sampling Date: 10/27/22
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: Rebecca Hebert 337-237-4775
Ron Benjamin
Lab Director
Scott, LA 11/16/22
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1 of 43
LA84794
Table of Contents
-1-
Sections:
Section 1: Sample Summary ................................................................................................... 3
Section 2: Summary of Hits .................................................................................................... 4
Section 3: Sample Results ........................................................................................................6
3.1: LA84794-1: MW-1 ....................................................................................................... 7
3.2: LA84794-2: MW-4 ....................................................................................................... 10
3.3: LA84794-3: MW-6 ....................................................................................................... 13
3.4: LA84794-4: MW-9 ....................................................................................................... 16
Section 4: Misc. Forms ............................................................................................................19
4.1: Chain of Custody ........................................................................................................... 20
Section 5: MS Volatiles - QC Data Summaries ..................................................................... 25
5.1: Method Blank Summary ................................................................................................ 26
5.2: Blank Spike/Blank Spike Duplicate Summary .............................................................. 32
5.3: Matrix Spike/Matrix Spike Duplicate Summary ........................................................... 38 123452 of 43
LA84794
SGS North America Inc.
Sample Summary
Atlas
Job No:LA84794
2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, 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
LA84794-1 10/27/22 12:10 LDS 11/01/22 AQ Ground Water MW-1
LA84794-2 10/27/22 11:40 LDS 11/01/22 AQ Ground Water MW-4
LA84794-3 10/27/22 11:25 LDS 11/01/22 AQ Ground Water MW-6
LA84794-4 10/27/22 12:00 LDS 11/01/22 AQ Ground Water MW-9
3 of 43
LA847941
Summary of Hits Page 1 of 2
Job Number:LA84794
Account:Atlas
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, NC
Collected:10/27/22
Lab Sample ID Client Sample ID Result/
Analyte Qual RL MDL Units Method
LA84794-1 MW-1
Acetone 5.2 J 10 1.2 ug/l SM 6200B
Benzene 0.91 0.50 0.27 ug/l SM 6200B
sec-Butylbenzene 0.19 J 0.50 0.14 ug/l SM 6200B
Di-Isopropyl Ether 4.5 0.50 0.073 ug/l SM 6200B
Ethylbenzene 0.35 J 0.50 0.20 ug/l SM 6200B
Isopropylbenzene 0.53 0.50 0.13 ug/l SM 6200B
Methyl Tert Butyl Ether 71.1 0.50 0.068 ug/l SM 6200B
Tert-Amyl Methyl Ether 0.68 J 1.0 0.084 ug/l SM 6200B
Tert-Butyl Alcohol 382 10 1.0 ug/l SM 6200B
m,p-Xylene 0.66 J 1.0 0.34 ug/l SM 6200B
o-Xylene 0.33 J 0.50 0.15 ug/l SM 6200B
Xylene (total)0.99 0.50 0.16 ug/l SM 6200B
LA84794-2 MW-4
Benzene 6.6 5.0 2.7 ug/l SM 6200B
Ethylbenzene 272 5.0 2.0 ug/l SM 6200B
Isopropylbenzene 26.1 5.0 1.3 ug/l SM 6200B
Naphthalene 348 5.0 1.0 ug/l SM 6200B
n-Propylbenzene 88.5 5.0 2.2 ug/l SM 6200B
1,2,4-Trimethylbenzene 838 5.0 1.5 ug/l SM 6200B
1,3,5-Trimethylbenzene 159 5.0 1.6 ug/l SM 6200B
m,p-Xylene 499 10 3.4 ug/l SM 6200B
o-Xylene 6.8 5.0 1.5 ug/l SM 6200B
Xylene (total)506 5.0 1.6 ug/l SM 6200B
LA84794-3 MW-6
n-Butylbenzene 0.21 J 0.50 0.092 ug/l SM 6200B
sec-Butylbenzene 0.36 J 0.50 0.14 ug/l SM 6200B
Di-Isopropyl Ether 4.0 0.50 0.073 ug/l SM 6200B
Ethylbenzene 0.28 J 0.50 0.20 ug/l SM 6200B
Isopropylbenzene 0.21 J 0.50 0.13 ug/l SM 6200B
Naphthalene 2.6 0.50 0.10 ug/l SM 6200B
Tert-Amyl Methyl Ether 1.8 1.0 0.084 ug/l SM 6200B
Toluene 0.72 0.50 0.29 ug/l SM 6200B
1,1,2-Trichloroethane 0.19 J 0.30 0.17 ug/l SM 6200B
1,2,4-Trimethylbenzene 0.47 J 0.50 0.15 ug/l SM 6200B
Vinyl Acetate 40.4 0.50 0.069 ug/l SM 6200B
Xylene (total)0.23 J 0.50 0.16 ug/l SM 6200B
4 of 43
LA847942
Summary of Hits Page 2 of 2
Job Number:LA84794
Account:Atlas
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, NC
Collected:10/27/22
Lab Sample ID Client Sample ID Result/
Analyte Qual RL MDL Units Method
LA84794-4 MW-9
Acetone a 35.3 10 1.2 ug/l SM 6200B
Benzene a 5.2 0.50 0.27 ug/l SM 6200B
1,2-Dichloroethane a 0.52 0.20 0.12 ug/l SM 6200B
Di-Isopropyl Ether a 0.69 0.50 0.073 ug/l SM 6200B
Methyl Tert Butyl Ether a 6.8 0.50 0.068 ug/l SM 6200B
Naphthalene a 0.17 J 0.50 0.10 ug/l SM 6200B
(a) Internal standards are not within control limits due to matrix interference. Confirmed by reanalysis.
5 of 43
LA847942
SGS North America Inc.
Sample Results
Report of Analysis
Scott, LA
Section 3
6 of 43
LA847943
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:MW-1
Lab Sample ID:LA84794-1 Date Sampled:10/27/22
Matrix:AQ - Ground Water Date Received:11/01/22
Method:SM 6200B Percent Solids:n/a
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 1Q0145042.D 1 11/10/22 22:11 JY n/a n/a V1Q3163
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 5.2 10 1.2 ug/l J
71-43-2 Benzene 0.91 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 0.19 0.50 0.14 ug/l J
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
a 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 43
LA8479433.1
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:MW-1
Lab Sample ID:LA84794-1 Date Sampled:10/27/22
Matrix:AQ - Ground Water Date Received:11/01/22
Method:SM 6200B Percent Solids:n/a
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, 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 4.5 0.50 0.073 ug/l
64-17-5 Ethyl Alcohol ND 50 8.4 ug/l
100-41-4 Ethylbenzene 0.35 0.50 0.20 ug/l J
637-92-3 Ethyl Tert-Butyl Ether ND 0.50 0.056 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 0.53 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 71.1 0.50 0.068 ug/l
91-20-3 Naphthalene ND 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
75-85-4 Tert-Amyl Alcohol ND 25 0.77 ug/l
994-05-8 Tert-Amyl Methyl Ether 0.68 1.0 0.084 ug/l J
75-65-0 Tert-Butyl Alcohol 382 10 1.0 ug/l
762-75-4 tert-Butyl Formate ND 5.0 0.035 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 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 0.66 1.0 0.34 ug/l J
95-47-6 o-Xylene 0.33 0.50 0.15 ug/l J
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 43
LA8479433.1
SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:MW-1
Lab Sample ID:LA84794-1 Date Sampled:10/27/22
Matrix:AQ - Ground Water Date Received:11/01/22
Method:SM 6200B Percent Solids:n/a
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, NC
VOA Special List
CAS No. Compound Result RL MDL Units Q
1330-20-7 Xylene (total)0.99 0.50 0.16 ug/l
CAS No. Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 100%70-130%
2037-26-5 Toluene-D8 105%70-130%
460-00-4 4-Bromofluorobenzene 105%70-130%
(a) Associated CCV outside of control limits high, sample was ND.
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 43
LA8479433.1
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:MW-4
Lab Sample ID:LA84794-2 Date Sampled:10/27/22
Matrix:AQ - Ground Water Date Received:11/01/22
Method:SM 6200B Percent Solids:n/a
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 2K0144848.D 10 11/07/22 16:49 MB n/a n/a V2K4032
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 100 12 ug/l
71-43-2 Benzene 6.6 5.0 2.7 ug/l
108-86-1 Bromobenzene ND 5.0 1.8 ug/l
74-97-5 Bromochloromethane ND 5.0 1.2 ug/l
75-27-4 Bromodichloromethane ND 5.0 1.8 ug/l
75-25-2 Bromoform ND 5.0 1.0 ug/l
104-51-8 n-Butylbenzene ND 5.0 0.92 ug/l
135-98-8 sec-Butylbenzene ND 5.0 1.4 ug/l
98-06-6 tert-Butylbenzene ND 5.0 1.6 ug/l
56-23-5 Carbon Tetrachloride ND 2.0 0.92 ug/l
108-90-7 Chlorobenzene ND 5.0 1.6 ug/l
75-00-3 Chloroethane ND 5.0 0.55 ug/l
67-66-3 Chloroform ND 5.0 0.94 ug/l
95-49-8 o-Chlorotoluene ND 5.0 1.6 ug/l
106-43-4 p-Chlorotoluene ND 5.0 2.0 ug/l
124-48-1 Dibromochloromethane ND 2.0 0.75 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 5.0 1.3 ug/l
106-93-4 1,2-Dibromoethane ND 5.0 2.4 ug/l
75-71-8 Dichlorodifluoromethane ND 5.0 1.2 ug/l
541-73-1 m-Dichlorobenzene ND 5.0 0.63 ug/l
95-50-1 o-Dichlorobenzene ND 5.0 2.0 ug/l
106-46-7 p-Dichlorobenzene ND 5.0 2.2 ug/l
75-34-3 1,1-Dichloroethane ND 5.0 1.0 ug/l
107-06-2 1,2-Dichloroethane ND 2.0 1.2 ug/l
75-35-4 1,1-Dichloroethylene ND 5.0 0.94 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 5.0 1.1 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 5.0 1.5 ug/l
78-87-5 1,2-Dichloropropane ND 3.0 1.3 ug/l
142-28-9 1,3-Dichloropropane ND 5.0 2.1 ug/l
594-20-7 2,2-Dichloropropane ND 5.0 0.79 ug/l
563-58-6 1,1-Dichloropropene ND 5.0 1.2 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 2.0 1.0 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 43
LA8479433.2
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:MW-4
Lab Sample ID:LA84794-2 Date Sampled:10/27/22
Matrix:AQ - Ground Water Date Received:11/01/22
Method:SM 6200B Percent Solids:n/a
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, NC
VOA Special List
CAS No. Compound Result RL MDL Units Q
10061-02-6 trans-1,3-Dichloropropene ND 2.0 0.56 ug/l
108-20-3 Di-Isopropyl Ether ND 5.0 0.73 ug/l
64-17-5 Ethyl Alcohol
a ND 500 84 ug/l
100-41-4 Ethylbenzene 272 5.0 2.0 ug/l
637-92-3 Ethyl Tert-Butyl Ether ND 5.0 0.56 ug/l
591-78-6 2-Hexanone ND 10 4.2 ug/l
87-68-3 Hexachlorobutadiene ND 2.0 1.1 ug/l
98-82-8 Isopropylbenzene 26.1 5.0 1.3 ug/l
99-87-6 p-Isopropyltoluene ND 5.0 1.3 ug/l
74-83-9 Methyl Bromide ND 5.0 2.3 ug/l
74-87-3 Methyl Chloride ND 5.0 0.66 ug/l
74-95-3 Methylene Bromide ND 5.0 1.1 ug/l
75-09-2 Methylene Chloride ND 5.0 0.80 ug/l
78-93-3 Methyl Ethyl Ketone ND 250 2.8 ug/l
108-10-1 4-Methyl-2-pentanone ND 5.0 2.4 ug/l
1634-04-4 Methyl Tert Butyl Ether ND 5.0 0.68 ug/l
91-20-3 Naphthalene 348 5.0 1.0 ug/l
103-65-1 n-Propylbenzene 88.5 5.0 2.2 ug/l
100-42-5 Styrene ND 5.0 1.3 ug/l
75-85-4 Tert-Amyl Alcohol ND 250 7.7 ug/l
994-05-8 Tert-Amyl Methyl Ether ND 10 0.84 ug/l
75-65-0 Tert-Butyl Alcohol ND 100 10 ug/l
762-75-4 tert-Butyl Formate
b ND 50 0.35 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 5.0 1.8 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 2.0 1.2 ug/l
127-18-4 Tetrachloroethylene ND 5.0 2.2 ug/l
108-88-3 Toluene ND 5.0 2.9 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 5.0 1.6 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 5.0 1.7 ug/l
71-55-6 1,1,1-Trichloroethane ND 5.0 1.6 ug/l
79-00-5 1,1,2-Trichloroethane ND 3.0 1.7 ug/l
79-01-6 Trichloroethylene ND 5.0 1.8 ug/l
75-69-4 Trichlorofluoromethane ND 5.0 0.73 ug/l
96-18-4 1,2,3-Trichloropropane ND 5.0 0.23 ug/l
95-63-6 1,2,4-Trimethylbenzene 838 5.0 1.5 ug/l
108-67-8 1,3,5-Trimethylbenzene 159 5.0 1.6 ug/l
108-05-4 Vinyl Acetate ND 5.0 0.69 ug/l
75-01-4 Vinyl Chloride ND 1.0 0.75 ug/l
m,p-Xylene 499 10 3.4 ug/l
95-47-6 o-Xylene 6.8 5.0 1.5 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
11 of 43
LA8479433.2
SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:MW-4
Lab Sample ID:LA84794-2 Date Sampled:10/27/22
Matrix:AQ - Ground Water Date Received:11/01/22
Method:SM 6200B Percent Solids:n/a
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, NC
VOA Special List
CAS No. Compound Result RL MDL Units Q
1330-20-7 Xylene (total)506 5.0 1.6 ug/l
CAS No. Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 94%70-130%
2037-26-5 Toluene-D8 104%70-130%
460-00-4 4-Bromofluorobenzene 98%70-130%
(a) Associated CCV outside of control limits high, sample was ND.
(b) Associated CCV outside of control limits low.
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 43
LA8479433.2
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:MW-6
Lab Sample ID:LA84794-3 Date Sampled:10/27/22
Matrix:AQ - Ground Water Date Received:11/01/22
Method:SM 6200B Percent Solids:n/a
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 1Q0145036.D 1 11/10/22 19:23 JY n/a n/a V1Q3163
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 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 0.21 0.50 0.092 ug/l J
135-98-8 sec-Butylbenzene 0.36 0.50 0.14 ug/l J
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
a 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 43
LA8479433.3
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:MW-6
Lab Sample ID:LA84794-3 Date Sampled:10/27/22
Matrix:AQ - Ground Water Date Received:11/01/22
Method:SM 6200B Percent Solids:n/a
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, 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 4.0 0.50 0.073 ug/l
64-17-5 Ethyl Alcohol ND 50 8.4 ug/l
100-41-4 Ethylbenzene 0.28 0.50 0.20 ug/l J
637-92-3 Ethyl Tert-Butyl Ether ND 0.50 0.056 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 0.21 0.50 0.13 ug/l J
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 2.6 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
75-85-4 Tert-Amyl Alcohol ND 25 0.77 ug/l
994-05-8 Tert-Amyl Methyl Ether 1.8 1.0 0.084 ug/l
75-65-0 Tert-Butyl Alcohol ND 10 1.0 ug/l
762-75-4 tert-Butyl Formate ND 5.0 0.035 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 0.72 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 0.19 0.30 0.17 ug/l J
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 0.47 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 40.4 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
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 43
LA8479433.3
SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:MW-6
Lab Sample ID:LA84794-3 Date Sampled:10/27/22
Matrix:AQ - Ground Water Date Received:11/01/22
Method:SM 6200B Percent Solids:n/a
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, NC
VOA Special List
CAS No. Compound Result RL MDL Units Q
1330-20-7 Xylene (total)0.23 0.50 0.16 ug/l J
CAS No. Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 102%70-130%
2037-26-5 Toluene-D8 105%70-130%
460-00-4 4-Bromofluorobenzene 104%70-130%
(a) Associated CCV outside of control limits high, sample was ND.
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 43
LA8479433.3
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:MW-9
Lab Sample ID:LA84794-4 Date Sampled:10/27/22
Matrix:AQ - Ground Water Date Received:11/01/22
Method:SM 6200B Percent Solids:n/a
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 a 2K0144847.D 1 11/07/22 16:19 MB n/a n/a V2K4032
Run #2 b 1Q0145037.D 1 11/10/22 19:51 JY n/a n/a V1Q3163
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 35.3 10 1.2 ug/l
71-43-2 Benzene 5.2 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 0.52 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 43
LA8479433.4
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:MW-9
Lab Sample ID:LA84794-4 Date Sampled:10/27/22
Matrix:AQ - Ground Water Date Received:11/01/22
Method:SM 6200B Percent Solids:n/a
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, 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 0.69 0.50 0.073 ug/l
64-17-5 Ethyl Alcohol
c ND 50 8.4 ug/l
100-41-4 Ethylbenzene ND 0.50 0.20 ug/l
637-92-3 Ethyl Tert-Butyl Ether ND 0.50 0.056 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 6.8 0.50 0.068 ug/l
91-20-3 Naphthalene 0.17 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
75-85-4 Tert-Amyl Alcohol ND 25 0.77 ug/l
994-05-8 Tert-Amyl Methyl Ether ND 1.0 0.084 ug/l
75-65-0 Tert-Butyl Alcohol ND 10 1.0 ug/l
762-75-4 tert-Butyl Formate
d ND 5.0 0.035 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 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
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 43
LA8479433.4
SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:MW-9
Lab Sample ID:LA84794-4 Date Sampled:10/27/22
Matrix:AQ - Ground Water Date Received:11/01/22
Method:SM 6200B Percent Solids:n/a
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, NC
VOA Special List
CAS No. Compound Result RL MDL Units Q
1330-20-7 Xylene (total)ND 0.50 0.16 ug/l
CAS No. Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 99%101% 70-130%
2037-26-5 Toluene-D8 104%104% 70-130%
460-00-4 4-Bromofluorobenzene 97%106% 70-130%
(a) Internal standards are not within control limits due to matrix interference. Confirmed by reanalysis.
(b) Confirmation run for internal standard areas.
(c) Associated CCV outside of control limits high, sample was ND.
(d) Associated CCV outside of control limits low.
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 43
LA8479433.4
SGS North America Inc.
Misc. Forms
Custody Documents and Other Forms
Includes the following where applicable:
• Chain of Custody
Scott, LA
Section 4
19 of 43
LA847944
LA84794: Chain of Custody
Page 1 of 5
20 of 43
LA8479444.1
LA84794: Chain of Custody
Page 2 of 5
21 of 43
LA8479444.1
LA84794: Chain of Custody
Page 3 of 5
22 of 43
LA8479444.1
Job Number:LA84794 Client:ATC
Date / Time Received:11/1/2022 9:20:00 AM Delivery Method:
Project:CK 3842
4. No. Coolers:1
Airbill #'s:
Cooler Security
1. Custody Seals Present:
Y or N
2. Custody Seals Intact:
3. COC Present:
4. Smpl Dates/Time OK
2. Thermometer ID:
Cooler Temperature Y or N
1. Temp criteria achieved:
3. Cooler media:
IR001;
Ice (direct contact)
Quality Control Preservation Y or N N/A
1. Trip Blank present / cooler:
2. Trip Blank listed on COC:
3. Samples preserved properly:
4. VOCs headspace free:
Sample Integrity - Documentation Y or N
1. Sample labels present on bottles:
2. Container labeling complete:
3. Sample container label / COC agree:
Sample Integrity - Condition Y or N
1. Sample recvd within HT:
3. Condition of sample:
2. All containers accounted for:
Sample Integrity - Instructions
1. Analysis requested is clear:
2. Bottles received for unspecified tests
3. Sufficient volume recvd for analysis:
4. Compositing instructions clear:
5. Filtering instructions clear:
Intact
Y or N
Comments
Y or N N/A
Cooler Temps (Initial/Adjusted):#1: (1.8/1.8);
SGS Sample Receipt Summary
LA84794: Chain of Custody
Page 4 of 5
23 of 43
LA8479444.1
Page 2 of 2
Problem Resolution
CSR:Response Date:
Response:
Job Number:LA84794
LA84794: Chain of Custody
Page 5 of 5
24 of 43
LA8479444.1
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 5
25 of 43
LA847945
Method Blank Summary Page 1 of 3
Job Number:LA84794
Account:ATCNCR Atlas
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K4032-MB1 2K0144840.D 1 11/07/22 MB n/a n/a V2K4032
The QC reported here applies to the following samples:Method: SM 6200B
LA84794-2, LA84794-4
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 0.22 0.50 0.13 ug/l J
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 10.4 50 8.4 ug/l J
100-41-4 Ethylbenzene ND 0.50 0.20 ug/l
26 of 43
LA8479455.1.1
Method Blank Summary Page 2 of 3
Job Number:LA84794
Account:ATCNCR Atlas
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K4032-MB1 2K0144840.D 1 11/07/22 MB n/a n/a V2K4032
The QC reported here applies to the following samples:Method: SM 6200B
LA84794-2, LA84794-4
CAS No. Compound Result RL MDL Units Q
637-92-3 Ethyl Tert-Butyl Ether ND 0.50 0.056 ug/l
591-78-6 2-Hexanone 0.52 1.0 0.42 ug/l J
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 0.57 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
75-85-4 Tert-Amyl Alcohol 0.77 25 0.77 ug/l J
994-05-8 Tert-Amyl Methyl Ether ND 1.0 0.084 ug/l
75-65-0 Tert-Butyl Alcohol ND 10 1.0 ug/l
762-75-4 tert-Butyl Formate 0.47 5.0 0.035 ug/l J
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 0.39 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
27 of 43
LA8479455.1.1
Method Blank Summary Page 3 of 3
Job Number:LA84794
Account:ATCNCR Atlas
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K4032-MB1 2K0144840.D 1 11/07/22 MB n/a n/a V2K4032
The QC reported here applies to the following samples:Method: SM 6200B
LA84794-2, LA84794-4
CAS No. Compound Result RL MDL Units Q
1330-20-7 Xylene (total)ND 0.50 0.16 ug/l
CAS No. Surrogate Recoveries Limits
17060-07-0 1,2-Dichloroethane-D4 98% 70-130%
2037-26-5 Toluene-D8 100% 70-130%
460-00-4 4-Bromofluorobenzene 97% 70-130%
28 of 43
LA8479455.1.1
Method Blank Summary Page 1 of 3
Job Number:LA84794
Account:ATCNCR Atlas
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V1Q3163-MB1 1Q0145033.D 1 11/10/22 JY n/a n/a V1Q3163
The QC reported here applies to the following samples:Method: SM 6200B
LA84794-1, LA84794-3
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
29 of 43
LA8479455.1.2
Method Blank Summary Page 2 of 3
Job Number:LA84794
Account:ATCNCR Atlas
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V1Q3163-MB1 1Q0145033.D 1 11/10/22 JY n/a n/a V1Q3163
The QC reported here applies to the following samples:Method: SM 6200B
LA84794-1, LA84794-3
CAS No. Compound Result RL MDL Units Q
637-92-3 Ethyl Tert-Butyl Ether ND 0.50 0.056 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 ND 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
75-85-4 Tert-Amyl Alcohol ND 25 0.77 ug/l
994-05-8 Tert-Amyl Methyl Ether ND 1.0 0.084 ug/l
75-65-0 Tert-Butyl Alcohol ND 10 1.0 ug/l
762-75-4 tert-Butyl Formate ND 5.0 0.035 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 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
30 of 43
LA8479455.1.2
Method Blank Summary Page 3 of 3
Job Number:LA84794
Account:ATCNCR Atlas
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V1Q3163-MB1 1Q0145033.D 1 11/10/22 JY n/a n/a V1Q3163
The QC reported here applies to the following samples:Method: SM 6200B
LA84794-1, LA84794-3
CAS No. Compound Result RL MDL Units Q
1330-20-7 Xylene (total)ND 0.50 0.16 ug/l
CAS No. Surrogate Recoveries Limits
17060-07-0 1,2-Dichloroethane-D4 102% 70-130%
2037-26-5 Toluene-D8 103% 70-130%
460-00-4 4-Bromofluorobenzene 108% 70-130%
31 of 43
LA8479455.1.2
Blank Spike/Blank Spike Duplicate Summary Page 1 of 3
Job Number:LA84794
Account:ATCNCR Atlas
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K4032-BS1 2K0144838.D 1 11/07/22 MB n/a n/a V2K4032
V2K4032-BSD1 2K0144839.D 1 11/07/22 MB n/a n/a V2K4032
The QC reported here applies to the following samples:Method: SM 6200B
LA84794-2, LA84794-4
Spike BSP BSP BSD BSD Limits
CAS No. Compound ug/l ug/l % ug/l % RPD Rec/RPD
67-64-1 Acetone 50 66.3 133* a 69.8 140* a 5 70-130/30
71-43-2 Benzene 20 20.8 104 21.9 110 5 70-130/30
108-86-1 Bromobenzene 20 20.3 102 20.3 102 0 70-130/30
74-97-5 Bromochloromethane 20 19.2 96 19.3 97 1 70-130/30
75-27-4 Bromodichloromethane 20 21.1 106 21.8 109 3 70-130/30
75-25-2 Bromoform 20 18.9 95 19.1 96 1 70-130/30
104-51-8 n-Butylbenzene 20 17.3 87 17.6 88 2 70-130/30
135-98-8 sec-Butylbenzene 20 22.5 113 22.5 113 0 70-130/30
98-06-6 tert-Butylbenzene 20 19.1 96 19.1 96 0 70-130/30
56-23-5 Carbon Tetrachloride 20 21.4 107 21.8 109 2 70-130/30
108-90-7 Chlorobenzene 20 20.4 102 20.5 103 0 70-130/30
75-00-3 Chloroethane 20 21.0 105 20.4 102 3 60-140/30
67-66-3 Chloroform 20 19.9 100 21.0 105 5 70-130/30
95-49-8 o-Chlorotoluene 20 20.3 102 20.8 104 2 70-130/30
106-43-4 p-Chlorotoluene 20 20.9 105 20.6 103 1 70-130/30
124-48-1 Dibromochloromethane 20 23.6 118 22.6 113 4 70-130/30
96-12-8 1,2-Dibromo-3-chloropropane 20 18.5 93 19.1 96 3 70-130/30
106-93-4 1,2-Dibromoethane 20 22.3 112 21.9 110 2 70-130/30
75-71-8 Dichlorodifluoromethane 20 17.2 86 18.2 91 6 60-140/30
541-73-1 m-Dichlorobenzene 20 20.9 105 21.0 105 0 70-130/30
95-50-1 o-Dichlorobenzene 20 20.8 104 21.1 106 1 70-130/30
106-46-7 p-Dichlorobenzene 20 20.2 101 20.3 102 0 70-130/30
75-34-3 1,1-Dichloroethane 20 20.6 103 21.1 106 2 70-130/30
107-06-2 1,2-Dichloroethane 20 19.4 97 20.8 104 7 70-130/30
75-35-4 1,1-Dichloroethylene 20 20.5 103 21.1 106 3 70-130/30
156-59-2 cis-1,2-Dichloroethylene 20 20.4 102 20.2 101 1 70-130/30
156-60-5 trans-1,2-Dichloroethylene 20 23.3 117 24.1 121 3 70-130/30
78-87-5 1,2-Dichloropropane 20 19.0 95 19.9 100 5 70-130/30
142-28-9 1,3-Dichloropropane 20 20.6 103 20.9 105 1 70-130/30
594-20-7 2,2-Dichloropropane 20 19.3 97 20.7 104 7 70-130/30
563-58-6 1,1-Dichloropropene 20 21.0 105 21.3 107 1 70-130/30
10061-01-5 cis-1,3-Dichloropropene 20 18.7 94 19.9 100 6 70-130/30
10061-02-6 trans-1,3-Dichloropropene 20 23.6 118 23.1 116 2 70-130/30
108-20-3 Di-Isopropyl Ether 20 20.3 102 20.5 103 1 70-130/30
64-17-5 Ethyl Alcohol 400 703 176* a 643 161* a 9 70-130/30
100-41-4 Ethylbenzene 20 23.1 116 23.2 116 0 70-130/30
* = Outside of Control Limits.
32 of 43
LA8479455.2.1
Blank Spike/Blank Spike Duplicate Summary Page 2 of 3
Job Number:LA84794
Account:ATCNCR Atlas
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K4032-BS1 2K0144838.D 1 11/07/22 MB n/a n/a V2K4032
V2K4032-BSD1 2K0144839.D 1 11/07/22 MB n/a n/a V2K4032
The QC reported here applies to the following samples:Method: SM 6200B
LA84794-2, LA84794-4
Spike BSP BSP BSD BSD Limits
CAS No. Compound ug/l ug/l % ug/l % RPD Rec/RPD
637-92-3 Ethyl Tert-Butyl Ether 20 17.9 90 18.9 95 5 70-130/30
591-78-6 2-Hexanone 50 61.0 122 62.1 124 2 70-130/30
87-68-3 Hexachlorobutadiene 20 20.4 102 20.7 104 1 70-130/30
98-82-8 Isopropylbenzene 20 24.1 121 24.0 120 0 70-130/30
99-87-6 p-Isopropyltoluene 20 17.5 88 17.8 89 2 70-130/30
74-83-9 Methyl Bromide 20 17.0 85 17.0 85 0 60-140/30
74-87-3 Methyl Chloride 20 18.2 91 19.3 97 6 60-140/30
74-95-3 Methylene Bromide 20 20.0 100 20.6 103 3 70-130/30
75-09-2 Methylene Chloride 20 20.9 105 21.6 108 3 70-130/30
78-93-3 Methyl Ethyl Ketone 50 55.4 111 58.2 116 5 70-130/30
108-10-1 4-Methyl-2-pentanone 50 45.1 90 45.5 91 1 70-130/30
1634-04-4 Methyl Tert Butyl Ether 20 18.6 93 19.5 98 5 70-130/30
91-20-3 Naphthalene 20 19.3 97 19.4 97 1 70-130/30
103-65-1 n-Propylbenzene 20 21.2 106 21.6 108 2 70-130/30
100-42-5 Styrene 20 19.9 100 20.2 101 1 70-130/30
75-85-4 Tert-Amyl Alcohol 200 182 91 188 94 3 50-150/30
b
994-05-8 Tert-Amyl Methyl Ether 20 17.7 89 19.7 99 11 70-130/30
75-65-0 Tert-Butyl Alcohol 100 91.3 91 92.1 92 1 70-130/30
762-75-4 tert-Butyl Formate 20 15.1 76 24.8 124 49* a 50-150/30 b
630-20-6 1,1,1,2-Tetrachloroethane 20 22.1 111 21.9 110 1 70-130/30
79-34-5 1,1,2,2-Tetrachloroethane 20 19.4 97 18.8 94 3 70-130/30
127-18-4 Tetrachloroethylene 20 19.8 99 20.9 105 5 70-130/30
108-88-3 Toluene 20 20.9 105 21.2 106 1 70-130/30
87-61-6 1,2,3-Trichlorobenzene 20 19.8 99 20.2 101 2 70-130/30
120-82-1 1,2,4-Trichlorobenzene 20 21.0 105 21.2 106 1 70-130/30
71-55-6 1,1,1-Trichloroethane 20 20.5 103 21.5 108 5 70-130/30
79-00-5 1,1,2-Trichloroethane 20 21.2 106 20.8 104 2 70-130/30
79-01-6 Trichloroethylene 20 20.0 100 21.3 107 6 70-130/30
75-69-4 Trichlorofluoromethane 20 20.1 101 20.4 102 1 60-140/30
96-18-4 1,2,3-Trichloropropane 20 20.9 105 20.5 103 2 70-130/30
95-63-6 1,2,4-Trimethylbenzene 20 22.3 112 22.3 112 0 70-130/30
108-67-8 1,3,5-Trimethylbenzene 20 22.0 110 22.3 112 1 70-130/30
108-05-4 Vinyl Acetate 20 20.3 102 20.2 101 0 70-130/30
75-01-4 Vinyl Chloride 20 18.2 91 19.2 96 5 60-140/30
m,p-Xylene 40 40.0 100 40.4 101 1 70-130/30
95-47-6 o-Xylene 20 19.2 96 19.3 97 1 70-130/30
* = Outside of Control Limits.
33 of 43
LA8479455.2.1
Blank Spike/Blank Spike Duplicate Summary Page 3 of 3
Job Number:LA84794
Account:ATCNCR Atlas
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K4032-BS1 2K0144838.D 1 11/07/22 MB n/a n/a V2K4032
V2K4032-BSD1 2K0144839.D 1 11/07/22 MB n/a n/a V2K4032
The QC reported here applies to the following samples:Method: SM 6200B
LA84794-2, LA84794-4
Spike BSP BSP BSD BSD Limits
CAS No. Compound ug/l ug/l % ug/l % RPD Rec/RPD
1330-20-7 Xylene (total)60 59.2 99 59.7 100 1 70-130/30
CAS No. Surrogate Recoveries BSP BSD Limits
17060-07-0 1,2-Dichloroethane-D4 111%105% 70-130%
2037-26-5 Toluene-D8 100%101% 70-130%
460-00-4 4-Bromofluorobenzene 101%103% 70-130%
(a) Outside control limits biased high. Analyte not detected in associated samples above the RECAP screening
standard.
(b) Advisory control limits.
* = Outside of Control Limits.
34 of 43
LA8479455.2.1
Blank Spike/Blank Spike Duplicate Summary Page 1 of 3
Job Number:LA84794
Account:ATCNCR Atlas
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V1Q3163-BS1 1Q0145030.D 1 11/10/22 JY n/a n/a V1Q3163
V1Q3163-BSD1 1Q0145031.D 1 11/10/22 JY n/a n/a V1Q3163
The QC reported here applies to the following samples:Method: SM 6200B
LA84794-1, LA84794-3
Spike BSP BSP BSD BSD Limits
CAS No. Compound ug/l ug/l % ug/l % RPD Rec/RPD
67-64-1 Acetone 50 51.9 104 52.6 105 1 70-130/30
71-43-2 Benzene 20 20.2 101 20.3 102 0 70-130/30
108-86-1 Bromobenzene 20 20.4 102 20.4 102 0 70-130/30
74-97-5 Bromochloromethane 20 20.5 103 20.5 103 0 70-130/30
75-27-4 Bromodichloromethane 20 20.7 104 20.4 102 1 70-130/30
75-25-2 Bromoform 20 21.8 109 21.8 109 0 70-130/30
104-51-8 n-Butylbenzene 20 22.6 113 22.6 113 0 70-130/30
135-98-8 sec-Butylbenzene 20 21.3 107 21.7 109 2 70-130/30
98-06-6 tert-Butylbenzene 20 22.8 114 23.1 116 1 70-130/30
56-23-5 Carbon Tetrachloride 20 20.9 105 20.3 102 3 70-130/30
108-90-7 Chlorobenzene 20 20.3 102 20.6 103 1 70-130/30
75-00-3 Chloroethane 20 20.1 101 19.7 99 2 60-140/30
67-66-3 Chloroform 20 18.8 94 18.9 95 1 70-130/30
95-49-8 o-Chlorotoluene 20 19.9 100 20.4 102 2 70-130/30
106-43-4 p-Chlorotoluene 20 20.5 103 20.9 105 2 70-130/30
124-48-1 Dibromochloromethane 20 21.0 105 21.1 106 0 70-130/30
96-12-8 1,2-Dibromo-3-chloropropane 20 17.3 87 17.7 89 2 70-130/30
106-93-4 1,2-Dibromoethane 20 20.0 100 20.1 101 0 70-130/30
75-71-8 Dichlorodifluoromethane 20 21.6 108 21.0 105 3 60-140/30
541-73-1 m-Dichlorobenzene 20 20.9 105 20.9 105 0 70-130/30
95-50-1 o-Dichlorobenzene 20 20.7 104 21.0 105 1 70-130/30
106-46-7 p-Dichlorobenzene 20 20.6 103 20.8 104 1 70-130/30
75-34-3 1,1-Dichloroethane 20 17.4 87 17.2 86 1 70-130/30
107-06-2 1,2-Dichloroethane 20 20.3 102 20.2 101 0 70-130/30
75-35-4 1,1-Dichloroethylene 20 18.0 90 17.5 88 3 70-130/30
156-59-2 cis-1,2-Dichloroethylene 20 28.0 140* 19.7 99 35* 70-130/30
156-60-5 trans-1,2-Dichloroethylene 20 18.0 90 17.7 89 2 70-130/30
78-87-5 1,2-Dichloropropane 20 19.6 98 19.8 99 1 70-130/30
142-28-9 1,3-Dichloropropane 20 19.8 99 19.7 99 1 70-130/30
594-20-7 2,2-Dichloropropane 20 20.3 102 19.8 99 2 70-130/30
563-58-6 1,1-Dichloropropene 20 20.0 100 19.8 99 1 70-130/30
10061-01-5 cis-1,3-Dichloropropene 20 20.5 103 20.5 103 0 70-130/30
10061-02-6 trans-1,3-Dichloropropene 20 21.5 108 21.5 108 0 70-130/30
108-20-3 Di-Isopropyl Ether 20 17.0 85 17.1 86 1 70-130/30
64-17-5 Ethyl Alcohol 400 444 111 418 105 6 70-130/30
100-41-4 Ethylbenzene 20 20.1 101 20.0 100 0 70-130/30
* = Outside of Control Limits.
35 of 43
LA8479455.2.2
Blank Spike/Blank Spike Duplicate Summary Page 2 of 3
Job Number:LA84794
Account:ATCNCR Atlas
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V1Q3163-BS1 1Q0145030.D 1 11/10/22 JY n/a n/a V1Q3163
V1Q3163-BSD1 1Q0145031.D 1 11/10/22 JY n/a n/a V1Q3163
The QC reported here applies to the following samples:Method: SM 6200B
LA84794-1, LA84794-3
Spike BSP BSP BSD BSD Limits
CAS No. Compound ug/l ug/l % ug/l % RPD Rec/RPD
637-92-3 Ethyl Tert-Butyl Ether 20 17.3 87 17.2 86 1 70-130/30
591-78-6 2-Hexanone 50 51.0 102 52.5 105 3 70-130/30
87-68-3 Hexachlorobutadiene 20 19.0 95 19.1 96 1 70-130/30
98-82-8 Isopropylbenzene 20 20.8 104 20.9 105 0 70-130/30
99-87-6 p-Isopropyltoluene 20 22.5 113 22.9 115 2 70-130/30
74-83-9 Methyl Bromide 20 22.2 111 21.9 110 1 60-140/30
74-87-3 Methyl Chloride 20 17.8 89 17.7 89 1 60-140/30
74-95-3 Methylene Bromide 20 21.0 105 21.1 106 0 70-130/30
75-09-2 Methylene Chloride 20 20.3 102 19.9 100 2 70-130/30
78-93-3 Methyl Ethyl Ketone 50 49.5 99 39.8 80 22 70-130/30
108-10-1 4-Methyl-2-pentanone 50 52.2 104 53.1 106 2 70-130/30
1634-04-4 Methyl Tert Butyl Ether 20 20.1 101 20.0 100 0 70-130/30
91-20-3 Naphthalene 20 20.3 102 20.7 104 2 70-130/30
103-65-1 n-Propylbenzene 20 20.7 104 21.2 106 2 70-130/30
100-42-5 Styrene 20 20.8 104 20.9 105 0 70-130/30
75-85-4 Tert-Amyl Alcohol 200 203 102 207 104 2 50-150/30
a
994-05-8 Tert-Amyl Methyl Ether 20 20.0 100 20.3 102 1 70-130/30
75-65-0 Tert-Butyl Alcohol 100 97.2 97 95.9 96 1 70-130/30
762-75-4 tert-Butyl Formate 20 17.4 87 17.4 87 0 50-150/30
a
630-20-6 1,1,1,2-Tetrachloroethane 20 20.4 102 20.6 103 1 70-130/30
79-34-5 1,1,2,2-Tetrachloroethane 20 19.8 99 20.4 102 3 70-130/30
127-18-4 Tetrachloroethylene 20 20.4 102 20.3 102 0 70-130/30
108-88-3 Toluene 20 20.8 104 21.0 105 1 70-130/30
87-61-6 1,2,3-Trichlorobenzene 20 20.2 101 20.4 102 1 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 20.0 100 20.1 101 0 70-130/30
79-00-5 1,1,2-Trichloroethane 20 19.3 97 19.7 99 2 70-130/30
79-01-6 Trichloroethylene 20 21.0 105 21.0 105 0 70-130/30
75-69-4 Trichlorofluoromethane 20 17.6 88 17.3 87 2 60-140/30
96-18-4 1,2,3-Trichloropropane 20 20.9 105 21.0 105 0 70-130/30
95-63-6 1,2,4-Trimethylbenzene 20 21.6 108 22.0 110 2 70-130/30
108-67-8 1,3,5-Trimethylbenzene 20 21.9 110 22.2 111 1 70-130/30
108-05-4 Vinyl Acetate 20 19.5 98 19.2 96 2 70-130/30
75-01-4 Vinyl Chloride 20 18.4 92 18.7 94 2 60-140/30
m,p-Xylene 40 41.1 103 41.3 103 0 70-130/30
95-47-6 o-Xylene 20 20.0 100 20.2 101 1 70-130/30
* = Outside of Control Limits.
36 of 43
LA8479455.2.2
Blank Spike/Blank Spike Duplicate Summary Page 3 of 3
Job Number:LA84794
Account:ATCNCR Atlas
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V1Q3163-BS1 1Q0145030.D 1 11/10/22 JY n/a n/a V1Q3163
V1Q3163-BSD1 1Q0145031.D 1 11/10/22 JY n/a n/a V1Q3163
The QC reported here applies to the following samples:Method: SM 6200B
LA84794-1, LA84794-3
Spike BSP BSP BSD BSD Limits
CAS No. Compound ug/l ug/l % ug/l % RPD Rec/RPD
1330-20-7 Xylene (total)60 61.1 102 61.5 103 1 70-130/30
CAS No. Surrogate Recoveries BSP BSD Limits
17060-07-0 1,2-Dichloroethane-D4 97%95% 70-130%
2037-26-5 Toluene-D8 88%90% 70-130%
460-00-4 4-Bromofluorobenzene 94%93% 70-130%
(a) Advisory control limits.
* = Outside of Control Limits.
37 of 43
LA8479455.2.2
Matrix Spike/Matrix Spike Duplicate Summary Page 1 of 3
Job Number:LA84794
Account:ATCNCR Atlas
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA84794-2MS 2K0144857.D 20 11/07/22 MB n/a n/a V2K4032
LA84794-2MSD 2K0144858.D 20 11/07/22 MB n/a n/a V2K4032
LA84794-2 2K0144848.D 10 11/07/22 MB n/a n/a V2K4032
The QC reported here applies to the following samples:Method: SM 6200B
LA84794-2, LA84794-4
LA84794-2 Spike MS MS Spike MSD MSD Limits
CAS No. Compound ug/l Q ug/l ug/l % ug/l ug/l % RPD Rec/RPD
67-64-1 Acetone ND 1000 525 53* 1000 542 54*3 70-130/20
71-43-2 Benzene 6.6 400 413 102 400 431 106 4 70-130/20
108-86-1 Bromobenzene ND 400 405 101 400 402 101 1 70-130/20
74-97-5 Bromochloromethane ND 400 364 91 400 407 102 11 70-130/20
75-27-4 Bromodichloromethane ND 400 419 105 400 444 111 6 70-130/20
75-25-2 Bromoform ND 400 381 95 400 369 92 3 70-130/20
104-51-8 n-Butylbenzene ND 400 353 88 400 383 96 8 70-130/20
135-98-8 sec-Butylbenzene ND 400 449 112 400 467 117 4 70-130/20
98-06-6 tert-Butylbenzene ND 400 392 98 400 408 102 4 70-130/20
56-23-5 Carbon Tetrachloride ND 400 398 100 400 406 102 2 70-130/20
108-90-7 Chlorobenzene ND 400 416 104 400 402 101 3 70-130/20
75-00-3 Chloroethane ND 400 404 101 400 411 103 2 60-140/20
67-66-3 Chloroform ND 400 372 93 400 393 98 5 70-130/20
95-49-8 o-Chlorotoluene ND 400 404 101 400 424 106 5 70-130/20
106-43-4 p-Chlorotoluene ND 400 407 102 400 437 109 7 70-130/20
124-48-1 Dibromochloromethane ND 400 437 109 400 461 115 5 70-130/20
96-12-8 1,2-Dibromo-3-chloropropane ND 400 361 90 400 370 93 2 70-130/20
106-93-4 1,2-Dibromoethane ND 400 440 110 400 449 112 2 70-130/20
75-71-8 Dichlorodifluoromethane ND 400 293 73 400 341 85 15 60-140/20
541-73-1 m-Dichlorobenzene ND 400 413 103 400 432 108 4 70-130/20
95-50-1 o-Dichlorobenzene ND 400 411 103 400 440 110 7 70-130/20
106-46-7 p-Dichlorobenzene ND 400 402 101 400 417 104 4 70-130/20
75-34-3 1,1-Dichloroethane ND 400 381 95 400 411 103 8 70-130/20
107-06-2 1,2-Dichloroethane ND 400 371 93 400 400 100 8 70-130/20
75-35-4 1,1-Dichloroethylene ND 400 381 95 400 391 98 3 70-130/20
156-59-2 cis-1,2-Dichloroethylene ND 400 401 100 400 407 102 1 70-130/20
156-60-5 trans-1,2-Dichloroethylene ND 400 440 110 400 549 137*22* 70-130/20
78-87-5 1,2-Dichloropropane ND 400 368 92 400 379 95 3 70-130/20
142-28-9 1,3-Dichloropropane ND 400 397 99 400 414 104 4 70-130/20
594-20-7 2,2-Dichloropropane ND 400 344 86 400 376 94 9 70-130/20
563-58-6 1,1-Dichloropropene ND 400 390 98 400 413 103 6 70-130/20
10061-01-5 cis-1,3-Dichloropropene ND 400 351 88 400 369 92 5 70-130/20
10061-02-6 trans-1,3-Dichloropropene ND 400 431 108 400 453 113 5 70-130/20
108-20-3 Di-Isopropyl Ether ND 400 364 91 400 406 102 11 70-130/20
64-17-5 Ethyl Alcohol ND 8000 12300 154* 8000 12200 153*1 70-130/20
100-41-4 Ethylbenzene 272 400 763 123 400 764 123 0 70-130/20
* = Outside of Control Limits.
38 of 43
LA8479455.3.1
Matrix Spike/Matrix Spike Duplicate Summary Page 2 of 3
Job Number:LA84794
Account:ATCNCR Atlas
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA84794-2MS 2K0144857.D 20 11/07/22 MB n/a n/a V2K4032
LA84794-2MSD 2K0144858.D 20 11/07/22 MB n/a n/a V2K4032
LA84794-2 2K0144848.D 10 11/07/22 MB n/a n/a V2K4032
The QC reported here applies to the following samples:Method: SM 6200B
LA84794-2, LA84794-4
LA84794-2 Spike MS MS Spike MSD MSD Limits
CAS No. Compound ug/l Q ug/l ug/l % ug/l ug/l % RPD Rec/RPD
637-92-3 Ethyl Tert-Butyl Ether ND 400 316 79 400 365 91 14 70-130/20
591-78-6 2-Hexanone ND 1000 995 100 1000 1030 103 3 70-130/20
87-68-3 Hexachlorobutadiene ND 400 397 99 400 416 104 5 70-130/20
98-82-8 Isopropylbenzene 26.1 400 512 121 400 501 119 2 70-130/20
99-87-6 p-Isopropyltoluene ND 400 352 88 400 370 93 5 70-130/20
74-83-9 Methyl Bromide ND 400 160 40* 400 228 57*35* 60-140/20
74-87-3 Methyl Chloride ND 400 308 77 400 357 89 15 60-140/20
74-95-3 Methylene Bromide ND 400 371 93 400 400 100 8 70-130/20
75-09-2 Methylene Chloride ND 400 411 103 400 422 106 3 70-130/20
78-93-3 Methyl Ethyl Ketone ND 1000 746 75 1000 887 89 17 70-130/20
108-10-1 4-Methyl-2-pentanone ND 1000 806 81 1000 883 88 9 70-130/20
1634-04-4 Methyl Tert Butyl Ether ND 400 337 84 400 393 98 15 70-130/20
91-20-3 Naphthalene 348 400 695 87 400 782 109 12 70-130/20
103-65-1 n-Propylbenzene 88.5 400 507 105 400 535 112 5 70-130/20
100-42-5 Styrene ND 400 389 97 400 401 100 3 70-130/20
75-85-4 Tert-Amyl Alcohol ND 4000 3140 79 4000 3340 84 6 50-150/30
a
994-05-8 Tert-Amyl Methyl Ether ND 400 327 82 400 386 97 17 70-130/20
75-65-0 Tert-Butyl Alcohol ND 2000 1510 76 2000 1880 94 22* 70-130/20
762-75-4 tert-Butyl Formate ND 400 84.7 21* 400 105 26*21 50-150/30
a
630-20-6 1,1,1,2-Tetrachloroethane ND 400 444 111 400 440 110 1 70-130/20
79-34-5 1,1,2,2-Tetrachloroethane ND 400 384 96 400 419 105 9 70-130/20
127-18-4 Tetrachloroethylene ND 400 322 81 400 323 81 0 70-130/20
108-88-3 Toluene ND 400 418 105 400 413 103 1 70-130/20
87-61-6 1,2,3-Trichlorobenzene ND 400 392 98 400 418 105 6 70-130/20
120-82-1 1,2,4-Trichlorobenzene ND 400 412 103 400 436 109 6 70-130/20
71-55-6 1,1,1-Trichloroethane ND 400 377 94 400 418 105 10 70-130/20
79-00-5 1,1,2-Trichloroethane ND 400 423 106 400 426 107 1 70-130/20
79-01-6 Trichloroethylene ND 400 403 101 400 406 102 1 70-130/20
75-69-4 Trichlorofluoromethane ND 400 378 95 400 391 98 3 60-140/20
96-18-4 1,2,3-Trichloropropane ND 400 422 106 400 442 111 5 70-130/20
95-63-6 1,2,4-Trimethylbenzene 838 400 1210 93 400 1290 113 6 70-130/20
108-67-8 1,3,5-Trimethylbenzene 159 400 598 110 400 631 118 5 70-130/20
108-05-4 Vinyl Acetate ND 400 372 93 400 415 104 11 70-130/20
75-01-4 Vinyl Chloride ND 400 340 85 400 373 93 9 60-140/20
m,p-Xylene 499 800 1370 109 800 1360 108 1 70-130/20
95-47-6 o-Xylene 6.8 400 391 96 400 395 97 1 70-130/20
* = Outside of Control Limits.
39 of 43
LA8479455.3.1
Matrix Spike/Matrix Spike Duplicate Summary Page 3 of 3
Job Number:LA84794
Account:ATCNCR Atlas
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA84794-2MS 2K0144857.D 20 11/07/22 MB n/a n/a V2K4032
LA84794-2MSD 2K0144858.D 20 11/07/22 MB n/a n/a V2K4032
LA84794-2 2K0144848.D 10 11/07/22 MB n/a n/a V2K4032
The QC reported here applies to the following samples:Method: SM 6200B
LA84794-2, LA84794-4
LA84794-2 Spike MS MS Spike MSD MSD Limits
CAS No. Compound ug/l Q ug/l ug/l % ug/l ug/l % RPD Rec/RPD
1330-20-7 Xylene (total)506 1200 1760 105 1200 1750 104 1 70-130/20
CAS No. Surrogate Recoveries MS MSD LA84794-2 Limits
17060-07-0 1,2-Dichloroethane-D4 97%104%94% 70-130%
2037-26-5 Toluene-D8 101%101%104% 70-130%
460-00-4 4-Bromofluorobenzene 104%102%98% 70-130%
(a) Advisory control limits.
* = Outside of Control Limits.
40 of 43
LA8479455.3.1
Matrix Spike/Matrix Spike Duplicate Summary Page 1 of 3
Job Number:LA84794
Account:ATCNCR Atlas
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA84794-1MS 1Q0145043.D 20 11/10/22 JY n/a n/a V1Q3163
LA84794-1MSD 1Q0145044.D 20 11/10/22 JY n/a n/a V1Q3163
LA84794-1 1Q0145042.D 1 11/10/22 JY n/a n/a V1Q3163
The QC reported here applies to the following samples:Method: SM 6200B
LA84794-1, LA84794-3
LA84794-1 Spike MS MS Spike MSD MSD Limits
CAS No. Compound ug/l Q ug/l ug/l % ug/l ug/l % RPD Rec/RPD
67-64-1 Acetone 5.2 J 1000 843 84 1000 787 78 7 70-130/20
71-43-2 Benzene 0.91 400 436 109 400 434 108 0 70-130/20
108-86-1 Bromobenzene ND 400 410 103 400 409 102 0 70-130/20
74-97-5 Bromochloromethane ND 400 429 107 400 428 107 0 70-130/20
75-27-4 Bromodichloromethane ND 400 426 107 400 418 105 2 70-130/20
75-25-2 Bromoform ND 400 430 108 400 430 108 0 70-130/20
104-51-8 n-Butylbenzene ND 400 368 92 400 366 92 1 70-130/20
135-98-8 sec-Butylbenzene 0.19 J 400 427 107 400 426 106 0 70-130/20
98-06-6 tert-Butylbenzene ND 400 485 121 400 491 123 1 70-130/20
56-23-5 Carbon Tetrachloride ND 400 401 100 400 409 102 2 70-130/20
108-90-7 Chlorobenzene ND 400 443 111 400 450 113 2 70-130/20
75-00-3 Chloroethane ND 400 465 116 400 432 108 7 60-140/20
67-66-3 Chloroform ND 400 394 99 400 404 101 3 70-130/20
95-49-8 o-Chlorotoluene ND 400 410 103 400 409 102 0 70-130/20
106-43-4 p-Chlorotoluene ND 400 409 102 400 412 103 1 70-130/20
124-48-1 Dibromochloromethane ND 400 413 103 400 415 104 0 70-130/20
96-12-8 1,2-Dibromo-3-chloropropane ND 400 358 90 400 352 88 2 70-130/20
106-93-4 1,2-Dibromoethane ND 400 411 103 400 416 104 1 70-130/20
75-71-8 Dichlorodifluoromethane ND 400 426 107 400 447 112 5 60-140/20
541-73-1 m-Dichlorobenzene ND 400 414 104 400 414 104 0 70-130/20
95-50-1 o-Dichlorobenzene ND 400 421 105 400 421 105 0 70-130/20
106-46-7 p-Dichlorobenzene ND 400 413 103 400 410 103 1 70-130/20
75-34-3 1,1-Dichloroethane ND 400 399 100 400 382 96 4 70-130/20
107-06-2 1,2-Dichloroethane ND 400 412 103 400 408 102 1 70-130/20
75-35-4 1,1-Dichloroethylene ND 400 409 102 400 391 98 5 70-130/20
156-59-2 cis-1,2-Dichloroethylene ND 400 395 99 400 405 101 3 70-130/20
156-60-5 trans-1,2-Dichloroethylene ND 400 392 98 400 377 94 4 70-130/20
78-87-5 1,2-Dichloropropane ND 400 425 106 400 414 104 3 70-130/20
142-28-9 1,3-Dichloropropane ND 400 408 102 400 404 101 1 70-130/20
594-20-7 2,2-Dichloropropane ND 400 304 76 400 302 76 1 70-130/20
563-58-6 1,1-Dichloropropene ND 400 397 99 400 400 100 1 70-130/20
10061-01-5 cis-1,3-Dichloropropene ND 400 405 101 400 397 99 2 70-130/20
10061-02-6 trans-1,3-Dichloropropene ND 400 409 102 400 409 102 0 70-130/20
108-20-3 Di-Isopropyl Ether 4.5 400 422 104 400 401 99 5 70-130/20
64-17-5 Ethyl Alcohol ND 8000 4970 62* 8000 4780 60*4 70-130/20
100-41-4 Ethylbenzene 0.35 J 400 868 217* 400 872 218*0 70-130/20
* = Outside of Control Limits.
41 of 43
LA8479455.3.2
Matrix Spike/Matrix Spike Duplicate Summary Page 2 of 3
Job Number:LA84794
Account:ATCNCR Atlas
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA84794-1MS 1Q0145043.D 20 11/10/22 JY n/a n/a V1Q3163
LA84794-1MSD 1Q0145044.D 20 11/10/22 JY n/a n/a V1Q3163
LA84794-1 1Q0145042.D 1 11/10/22 JY n/a n/a V1Q3163
The QC reported here applies to the following samples:Method: SM 6200B
LA84794-1, LA84794-3
LA84794-1 Spike MS MS Spike MSD MSD Limits
CAS No. Compound ug/l Q ug/l ug/l % ug/l ug/l % RPD Rec/RPD
637-92-3 Ethyl Tert-Butyl Ether ND 400 406 102 400 386 97 5 70-130/20
591-78-6 2-Hexanone ND 1000 1130 113 1000 1100 110 3 70-130/20
87-68-3 Hexachlorobutadiene ND 400 325 81 400 331 83 2 70-130/20
98-82-8 Isopropylbenzene 0.53 400 430 107 400 432 108 0 70-130/20
99-87-6 p-Isopropyltoluene ND 400 449 112 400 449 112 0 70-130/20
74-83-9 Methyl Bromide ND 400 241 60 400 310 78 25* 60-140/20
74-87-3 Methyl Chloride ND 400 312 78 400 342 86 9 60-140/20
74-95-3 Methylene Bromide ND 400 432 108 400 423 106 2 70-130/20
75-09-2 Methylene Chloride ND 400 478 120 400 455 114 5 70-130/20
78-93-3 Methyl Ethyl Ketone ND 1000 945 95 1000 918 92 3 70-130/20
108-10-1 4-Methyl-2-pentanone ND 1000 1160 116 1000 1100 110 5 70-130/20
1634-04-4 Methyl Tert Butyl Ether 71.1 400 904 208* 400 842 193*7 70-130/20
91-20-3 Naphthalene ND 400 415 104 400 416 104 0 70-130/20
103-65-1 n-Propylbenzene ND 400 416 104 400 417 104 0 70-130/20
100-42-5 Styrene ND 400 424 106 400 431 108 2 70-130/20
75-85-4 Tert-Amyl Alcohol ND 4000 4420 111 4000 4370 109 1 50-150/30
a
994-05-8 Tert-Amyl Methyl Ether 0.68 J 400 433 108 400 430 107 1 70-130/20
75-65-0 Tert-Butyl Alcohol 382 2000 4680 215* 2000 4200 191*11 70-130/20
762-75-4 tert-Butyl Formate ND 400 410 103 400 390 98 5 50-150/30
a
630-20-6 1,1,1,2-Tetrachloroethane ND 400 421 105 400 429 107 2 70-130/20
79-34-5 1,1,2,2-Tetrachloroethane ND 400 439 110 400 434 109 1 70-130/20
127-18-4 Tetrachloroethylene ND 400 315 79 400 312 78 1 70-130/20
108-88-3 Toluene ND 400 441 110 400 443 111 0 70-130/20
87-61-6 1,2,3-Trichlorobenzene ND 400 400 100 400 401 100 0 70-130/20
120-82-1 1,2,4-Trichlorobenzene ND 400 398 100 400 405 101 2 70-130/20
71-55-6 1,1,1-Trichloroethane ND 400 396 99 400 400 100 1 70-130/20
79-00-5 1,1,2-Trichloroethane ND 400 411 103 400 405 101 1 70-130/20
79-01-6 Trichloroethylene ND 400 408 102 400 417 104 2 70-130/20
75-69-4 Trichlorofluoromethane ND 400 405 101 400 386 97 5 60-140/20
96-18-4 1,2,3-Trichloropropane ND 400 440 110 400 432 108 2 70-130/20
95-63-6 1,2,4-Trimethylbenzene ND 400 439 110 400 436 109 1 70-130/20
108-67-8 1,3,5-Trimethylbenzene ND 400 443 111 400 449 112 1 70-130/20
108-05-4 Vinyl Acetate ND 400 539 135* 400 505 126 7 70-130/20
75-01-4 Vinyl Chloride ND 400 425 106 400 408 102 4 60-140/20
m,p-Xylene 0.66 J 800 2980 372* 800 2900 362*3 70-130/20
95-47-6 o-Xylene 0.33 J 400 977 244* 400 982 245*1 70-130/20
* = Outside of Control Limits.
42 of 43
LA8479455.3.2
Matrix Spike/Matrix Spike Duplicate Summary Page 3 of 3
Job Number:LA84794
Account:ATCNCR Atlas
Project:2723842, Circle K #3842, 7249 US Hwy 15/501, Carthage, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA84794-1MS 1Q0145043.D 20 11/10/22 JY n/a n/a V1Q3163
LA84794-1MSD 1Q0145044.D 20 11/10/22 JY n/a n/a V1Q3163
LA84794-1 1Q0145042.D 1 11/10/22 JY n/a n/a V1Q3163
The QC reported here applies to the following samples:Method: SM 6200B
LA84794-1, LA84794-3
LA84794-1 Spike MS MS Spike MSD MSD Limits
CAS No. Compound ug/l Q ug/l ug/l % ug/l ug/l % RPD Rec/RPD
1330-20-7 Xylene (total)0.99 1200 3960 330* 1200 3880 323*2 70-130/20
CAS No. Surrogate Recoveries MS MSD LA84794-1 Limits
17060-07-0 1,2-Dichloroethane-D4 94%95%100% 70-130%
2037-26-5 Toluene-D8 91%89%105% 70-130%
460-00-4 4-Bromofluorobenzene 91%91%105% 70-130%
(a) Advisory control limits.
* = Outside of Control Limits.
43 of 43
LA8479455.3.2

APPENDIX E CONTAMINANT MASS VERSUS TIME

2019
2020
2021
2021
2022
2022
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
2019 2020 2021 2021 2022 2022Contaminant Mass (kg)Date
Contaminant Mass versus Time
Dissolved Benzene Mass