WS-29490_48631_CA_LSA_20230330

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

March 30, 2023

Mr. Jordan Lerew
North Carolina Department of Environmental Quality
Guilford County Department of Health and Human Services
400 W. Market Street, Suite 300
Greensboro, North Carolina 27406

Re: Phase II Limited Site Assessment
Circle K Store #2723476
3302 S. Holden Road
Greensboro, Guilford County, North Carolina
NCDEQ Incident No. 48631

Dear Mr. Lerew:

ATC Associates of North Carolina, LLC (ATC), on behalf of Circle K Stores, Inc., is submitting
this Phase II Limited Site Assessment Report for the referenced facility.

If you have any questions or require additional information, please contact our office at (919)
871-0999.

Sincerely,
ATC Associates of North Carolina, LLC

Maureen Jackson, P.G.
Senior Project Manager

cc: Mr. Alan Cubberley, Circle K Stores, Inc.

PHASE II LIMITED SITE ASSESSMENT REPORT

For

CIRCLE K STORE #2723476

3302 S. HOLDEN ROAD

GREENSBORO, NORTH CAROLINA

Prepared By:

ATC ASSOCIATES OF NORTH CAROLINA, LLC

2725 E. MILLBROOK ROAD, SUITE 121

RALEIGH, NORTH CAROLINA 27604

TELEPHONE [phone]

Prepared For:

CIRCLE K STORES, INC.

1100 SITUS COURT, SUITE 100

RALEIGH, NORTH CAROLINA 27606
Facility I.D.: 00-0-0000035853Latitude: 36.019547" Norrh
PHASE II LIMITED SITE ASSESSMENT REPORT
March 30,2023
Site Name: Circle K Store #2723476
Site Address: 3302 S. Holden Road
Greensboro, Guilford County, North Carolina
UST Incident Number: 48631
Longitudez 79.8461l5o West Source: Google Earth
UST Owner: Circle K Stores, Inc. UST Operator: Circle K Stores, lnc.Address: I 100 Situs Court, Suite 100 Address: I 100 Situs Court, Suite 100
Raleigh, North Carolina 27606 Raleigh, North Carolina 27606Telephone [phone] Telephone (919) 774_6700
PropertyOwner: Circle K Stores, Inc.Address: P.O. Box 52085
Phoenix, Arizonag5072
Telephone: [phone]
Consultant: ATC Associates of North Carolina,LLCAddress: 2725 E. Millbrook Road, Suite l2l
Raleigh, North Carolina 27604
Telephone (91 9) 87 t-0999
Analytical Laboratory: SGS North America, Idc. State Certification No. 4g7Address: 500 Ambassador Caffery Scott, Louisiana 705g3
Telephone [phone]
Release Information
Date Discovered: August 16,2022
Estimated Quantity Of Release: Unknown
I,ist for ATC Associates of North carolina,LLC, do certify that theinformation con te to the best of my knowledge.
Property
Occupant: Circle K Store #2723476Address: 3302 S. Holden Road
Greensboro, North Carolina
Telephone: [phone]
Cause of Release: Dispenser 5/6 UDC Boots Failed Testing and Subsequent product Line ReplacementUST Information: Twq.ffig00aggllon gasoline USTs
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number of the company is C1
is lic"nsed to practice engineering in North Carolina.The certification
TABLE OF CONTENTS

Section Page
1.0 SITE HISTORY AND CHARACTERIZATION 1
1.1 UST OWNER AND OPERATOR INFORMATION 1
1.2 UST INFORMATION 1
1.3 AST INFORMATION 1
1.4 SITE CHARACTERISTICS 2
1.5 RELEASE INFORMATION 2

2.0 LIMITED SITE ASSESSMENT RISK CLASSIFICATION AND LAND USE 2

3.0 RECEPTOR PATHWAY INFORMATION 5
3.1 WATER SUPPLY WELLS 6
3.2 PUBLIC WATER SUPPLIES 6
3.3 SURFACE WATER BODIES 6
3.4 WELLHEAD PROTECTION AREAS 6
3.5 REGIONAL GEOLOGY AND HYDROGEOLOGY 6
3.6 SUBSURFACE STRUCTURES 6
3.7 LAND USE 6

4.0 LIMITED SITE ASSESSMENT ACTIVITIES 7
4.1 MONITORING WELL INSTALLATION 7
4.2 SOIL SAMPLING 7
4.3 AFVR EVENT 8
4.4 GROUNDWATER SAMPLING 9

5.0 SITE GEOLOGY AND HYDROGEOLOGY 9
5.1 DESCRIPTION OF SHALLOW SUBSURFACE GEOLOGY 9
5.2 GROUNDWATER OCCURRENCE 9
5.3 GROUNDWATER FLOW DIRECTION 9

6.0 ANALYTICAL RESULTS 10
6.1 SOIL ANALYTICAL RESULTS 10
6.2 GROUNDWATER ANALYTICAL RESULTS 10

7.0 CONCLUSIONS AND RECOMMENDATIONS 10
7.1 CONCLUSIONS 10
7.2 RECOMMENDATIONS 11

8.0 LIMITATIONS 11

TABLES
Table 1 Water Supply Well Information
Table 2 Adjacent Property Owner Information
Table 3 LNAPL Recovery Data
Table 4 Monitoring Well Construction Details
Table 5 Soil Analytical Results
Table 6 Groundwater Analytical Results

FIGURES
Figure 1 Topographic Map
Figure 2 Site Map
Figure 3 1,500’ Radius Map
Figure 4 Groundwater Elevation Contour Map
Figure 5 Petroleum Related Impacts to Soil
Figure 6 Dissolved Contaminants of Concern

APPENDICES
Appendix A Boring Logs and Well Construction Records
Appendix B AFVR Manifest, AFVR Field Measurements and Emissions Calculations, and Vacuum Truck
Specifications
Appendix C Laboratory Reports and Chains-of-Custody Documents

PHASE II LIMITED SITE ASSESSMENT REPORT
FOR
CIRCLE K STORE #2723476
3302 S. HOLDEN ROAD
GREENSBORO, NORTH CAROLINA

ATC Associates of North Carolina, LLC (ATC) has prepared the following report for Circle K Stores, Inc. (Circle K) on
limited site assessment (LSA) activities performed at the Circle K Store #2723476 in Greensboro, North Carolina. This
report has been prepared pursuant to applicable sections of Title 15A of the North Carolina Administrative Code (NCAC),
Chapter 2, Subchapter 2L and in accordance with the State of North Carolina Department of Environmental Quality
(NCDEQ), Division of Waste Management (DWM), Underground Storage Tank (UST) Section Guidelines for
Assessment and Corrective Action for UST Releases, effective July 15, 2008.

1.0 SITE HISTORY AND CHARACTERIZATION
1.1 UST OWNER AND OPERATOR INFORMATION
The USTs and their appurtenances are owned and operated by Circle K Stores, Inc. of Raleigh, North Carolina.
Information regarding each of the tanks is provided below.

1.2 UST INFORMATION
UST
ID PRODUCT CAPACITY
(gals.) MATERIALS INSTALLATION
DATE
UST
STATUS
RELEASE
ASSOCIATED
(Yes/No)
71B Gasoline
(regular) 15,000
UST: FRP Clad
Steel
Piping: DW Flex
1/1/1998 Active Yes
71C Gasoline
(premium) 15,000
UST: FRP Clad
Steel
Piping: DW Flex
1/1/1998 Active Yes
71D Gasoline
(boat fuel) 10,000
UST: FRP Clad
Steel
Piping: DW Flex
1/1/1998 Active No
71E Diesel 10,000
UST: FRP Clad
Steel
Piping: DW Flex
1/1/1998 Active No

Figure 1 is a topographical map of the site and surrounding area. Figure 2 is a site map which depicts the site
and pertinent structures, including the location of the USTs and appurtenances.

1.3 AST INFORMATION
An aboveground storage tank (AST) was not identified on the facility property.

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Circle K Store #2723476 March 30, 2023

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1.4 SITE CHARACTERISTICS
Presently, the site is an active convenience store and retail fuel outlet. Surface cover at the site consists of mainly
concrete and asphalt.

1.5 RELEASE INFORMATION
On June 29, 2022, during a NCDEQ compliance inspection, it was discovered that the premium gasoline product line was
leaking in the under-dispenser containment (UDC) of dispenser 5/6. On this date, the power to the premium gasoline
system was turned off and the ball valve to dispenser 5/6 was closed. A Site Check Report was submitted to the NCDEQ
by ATC personnel on August 19, 2022.

On August 19, 2022, the NCDEQ issued a Notice of Regulatory Requirement (NORR) requesting the performance of a
Limited Site Assessment (LSA) Report.

As a result of the product line failure, Circle K Stores, Inc. opted to replace the regular and premium gasoline product
lines at the referenced facility. During September 2022, the gasoline product lines were replaced and a Gasoline Product
Line Closure Report was submitted to the NCDEQ by ATC personnel on November 1, 2022.

2.0 LIMITED SITE ASSESSMENT RISK CLASSIFICATION AND LAND USE
In order to evaluate the following, a review of available site-specific, local and regional data was performed to include:
• A well survey within a 1,000-feet radius of the subject facility, including a record inquiry.
• Identification of wellhead protection areas.
• Researching geology and hydrogeology of the region, including topography, soil types, and surface water
drainage patterns.
• Identification of surface waters within a 1,500-feet radius of the subject facility.
• Land use observations (site reconnaissance) and zoning classifications.
• A visual survey for subsurface structures and potential impacts from the source area.
• Gathering information on adjacent property owners and occupants.

Part I – Groundwater/Surface Water/Vapor Impacts
High Risk:
1. Has the discharge or release contaminated any water supply well including any used for non-drinking purposes?
NO

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2. Is a water supply well used for drinking water located within 1,000 feet of the source area of the discharge or
release? YES

3. Is a water supply well used for any purpose (e.g. irrigation, washing cars, industrial cooling water, filling
swimming pools) located within 250 feet of the source area of the release or discharge? NO

4. Does groundwater within 500 feet of the source area of the discharge or release have the potential for future use
in that there is no other source of water supply other than the groundwater? NO

5. Do vapors from the discharge or release pose a threat of explosion because of accumulation of the vapors in a
confined space or pose any other serious threat to public health, public safety, or the environment? NO

6. Are there any other factors that would cause the discharge or release to pose an imminent danger to public
health, public safety, or the environment? NO
At the time of this report, factors have not been identified that would appear to pose an imminent danger to public
health, public safety, or the environment.

Intermediate Risk:
7. Is a surface water body located within 500 feet of the source area of the discharge or release? NO

If yes, does the maximum groundwater contaminant concentration exceed the surface water quality standards and
criteria found in 15A NCAC 2B .0200 by a factor of 10? N/A

8. Is the source area of the discharge or release located within a designated wellhead protection area as defined in
42 USC 300h-7(e)? NO

9. Is the discharge or release located in the Coastal Plain Physiographic Region as designated on a map entitled
“Geology of North Carolina” published by the Department in 1985? NO

If yes, is the source area of the discharge or release located in an area in which there is recharge to an
unconfirmed or semi-confined aquifer that is being used or may be used as a source of drinking water? N/A

10. Do the levels of groundwater contamination for any contaminant exceed the gross contamination levels (GCLs)
established by the Department? YES

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Part II – Land Use
Property Containing Source Area of Discharge or Release:
The questions below pertain to the property containing the source area of the release.
1. Does the property contain one or more primary or secondary (permanent or temporary) residences? NO

2. Does the property contain a school, daycare center, hospital, playground, park, recreation area, church, nursing
home, or other place of public assembly? NO
The property is an active convenience store.

3. Does the property contain a commercial (e.g., retail, warehouse, office/business space, etc.) or industrial (e.g.,
manufacturing, utilities, industrial research and development, chemical/petroleum bulk storage, etc.) enterprise,
and inactive commercial or industrial enterprise, or is the land undeveloped? YES

4. Do children visit the property? YES

5. Is access to the property reliably restricted consistent with its use (e.g., by fences, security personnel or both)?
NO

6. Do pavement, building, or other structures cap the contaminated soil? YES
The UST basin, driveways, and parking areas are covered by concrete and asphalt.

If yes, what mechanisms are in place or can be put into place to ensure that the contaminated soil will remain
capped in the foreseeable future?
The intended use of the property will likely remain the same.

7. What is the zoning status of the property?
The site is zoned for commercial use.

8. Is the use of the property likely to change in the next 20 years? NO
ATC personnel are not aware of any plans to change the commercial use of the property.

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Property Surrounding Source Area of Discharge or Release:
The questions below pertain to the area within 1,500 feet of the source area of the discharge or release (excludes property
containing source area of the release):

9. What is the distance from the source area of the release to the nearest primary or secondary residence
(permanent or temporary)?
The nearest residence was identified approximately 260 feet southwest of the source area.

10. What is the distance from the source area of the release to the nearest school, daycare center, hospital,
playground, park, recreation area, church, nursing home, or other place of public assembly?
Hemphill Branch Library is located along the western property boundary of the subject facility. A daycare center,
Childcare Network, is located approximately 400 feet north of the source area. A church was identified
approximately 820 feet southwest of the source area. Other places of public assembly were not identified within
1,500 feet of the source area.

11. What is the zoning status of properties in the surrounding area?
The subject facility and surrounding properties are zoned commercial and residential. Commercial businesses,
residential areas, and undeveloped areas characterize the surrounding area.

12. Briefly characterize the use and activities of the land in the surrounding area.
The site and adjacent areas are mainly commercial establishments or residential areas.

3.0 RECEPTOR PATHWAY INFORMATION
As defined by NCDEQ, a receptor is “any human, plant, or animal that is or has the potential to be adversely affected by
the release or migration of contaminants”. With respect to the subject facility, the following sections present information
regarding potential receptor pathways for the migration of contaminants and pathway relationships to the facility.

In an effort to efficiently gather complete and accurate data, ATC personnel performed a receptor survey of the area.
Activities included a visual reconnaissance survey within 1,500 feet radial distance of the site, obtaining utility
information from the City of Greensboro Water Department and obtaining property use information from the Guilford
County Tax Department. The results of the survey, regarding the potential identification of water wells located within
1,500 feet of the site, are summarized below.

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3.1 WATER SUPPLY WELLS
According to the City of Greensboro Water Department, public water is supplied to the site and adjacent properties within
1,500 feet of the source area; however, it is not mandatory for properties to be connected to the public water system.
Two water supply wells were identified within 1,500 feet of the source area. It was confirmed with the City of
Greensboro Water Department that these properties do not receive a water bill; therefore, these properties utilize the water
supply wells for potable purposes. The nearest potable water supply well was identified approximately 610 feet southwest
of the source area. It should be noted one potential non-potable water supply well was identified approximately 780 feet
south of the source area. A water supply well survey was mailed to the identified property; however, the survey was not
returned. The water supply well information is summarized on Table 1 and the approximate locations of the water supply
wells are depicted on Figure 3.

3.2 PUBLIC WATER SUPLIES
Public water supply to the area is provided by the City of Greensboro; however, connection is not mandatory.

3.3 SURFACE WATER BODIES
As shown on Figure 1, surface water bodies were not identified within 1,500 feet of the source area.

3.4 WELLHEAD PROTECTION AREAS
At the time of this investigation, the source area is not located within an approved wellhead protection area as defined in
42 USC 300h-7(e).

3.5 REGIONAL GEOLOGY AND HYDROGEOLOGY
According to the Geologic Map of North Carolina (Brown, et al., 1985), the site lies within the Piedmont intrusive rocks
of the Charlotte and Milton Belts.

3.6 SUBSURFACE STRUCTURES
Subsurface structures identified at the subject facility include sanitary sewer lines, municipal water lines, and storm
drains. A water meter was observed on-site. Other utilities may be present.

3.7 LAND USE
The site and adjacent areas are mainly commercial establishments or residential areas. Adjacent property owner
information is provided on Table 2.

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4.0 LIMITED SITE ASSESSMENT ACTIVITIES
The limited site assessment activities performed to collect data for this report included researching site-specific, local and
regional data, performing an Aggressive Fluid Vapor Recovery (AFVR) event to address the present of light non-aqueous
phase liquid (LNAPL) at the site, performing soil and groundwater sampling, and submitting soil and groundwater
samples for analytical testing. Information was also obtained from prior reports prepared by ATC. The following
sections discuss specific methodologies used in conducting these limited site assessment activities.

4.1 MONITORING WELL INSTALLATION
Monitoring well MW-1 was installed by personnel with Geologic Exploration on September 15, 2022. Monitoring wells
MW-2, MW-3, and MW-4 were installed by personnel with SAEDACCO on January 23, 2023. The locations of the
monitoring wells are depicted on Figure 2.

Monitoring well MW-1 was installed to a depth of approximately 15 feet below ground surface (bgs), monitoring wells
MW-2, MW-3, and MW-4 were installed to depths of approximately 20 feet bgs. The wells were installed using
hollow-stem augers and were constructed of two-inch diameter well casing made of flush-joint, threaded schedule-40 poly
vinyl chloride (PVC) pipe. The PVC well screen is 0.010-inch slot with a screened interval of 10 feet for monitoring well
MW-1 and a screened interval of 15 feet for monitoring wells MW-2, MW-3, and MW-4. A coarse sand pack (filter
pack) was used to backfill the well annulus to a depth of approximately one foot above each well screen. A one-foot thick
bentonite seal was placed above the filter pack, and neat cement was used to fill the remainder of the well annulus to
ground surface.

The wells were installed as flush-mounted and were provided with a sealing and locking cap. A protective, steel,
traffic-bearing cover was placed over each well upon completion. The boring logs and well construction records are
presented in Appendix A.

4.2 SOIL SAMPLING
During the installation of monitoring well MW-1, a soil sample was collected from the monitoring well borehole for
submittal to the project laboratory for analyses. It should be noted the soil sample was lost during its transport to the
project laboratory; therefore, ATC had to return to the site to collect a soil sample as close as possible to existing
monitoring well MW-1.

On October 28, 2022, ATC and Geologic Exploration personnel met onsite to collect a soil sample as close as possible to
existing monitoring well MW-1. A stainless-steel, field-decontaminated hand auger was used to advance boring MW-1 to
a depth of approximately 8.5 feet bgs. A soil sample was collected at an approximate depth of 7.5 to 8.5 feet bgs. The
soil sample was screened with a photoionization detector (PID). The soil sample was placed directly into laboratory
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supplied containers and placed into a chilled cooler. The soil sample was submitted for analysis by Environmental
Protection Agency (EPA) Method 8260 and Massachusetts Department of Environmental Protection (MADEP) method
for volatile petroleum hydrocarbons (VPH).

4.3 AFVR EVENT
On October 4, 2022, following the installation of monitoring well MW-1, ATC personnel measured approximately 1.64
feet of LNAPL within this well. ATC immediately notified the Guilford County Health Department and it was requested
that an AFVR event be performed on monitoring well MW-1.

On October 19, 2022, ATC supervised the performance of an AFVR event at the site to assist in LNAPL recovery from
monitoring well MW-1. Prior to the initiation of AFVR activities, the depth to LNAPL and groundwater was measured in
monitoring well MW-1. On this date, approximately 1.39 feet of LNAPL was measured in monitoring well MW-1. The
AFVR event included a single connection to monitoring well MW-1 for a 480-minute period.

A stinger pipe consisting of one-inch flexible hose was used to connect between the truck vacuum line and the monitoring
well. The stinger pipe in monitoring well MW-1 was lowered to an approximate depth of 14.75 feet bgs. The stinger pipe
was not adjusted during the event. The annuli between the stinger pipe assembly and the well casing were sealed to
minimize vacuum loss. AFVR activities were initiated at 0700 hours. At 1500 hours, the AFVR event concluded.

Throughout the AFVR event, operative parameters from the exhaust stack on the vacuum truck were measured at
15-minute intervals for the first two hours and at 30-minute intervals for the remaining six hours. Using a PID, total
volatile organic compound (VOC) readings from the exhaust stack ranged from 10.8 parts per million (ppm) to 4,280 ppm
during the event. The truck vacuum gauge reading registered between 16 and 23 inches of mercury throughout the event.

During the AFVR event, a total of 615 gallons of petroleum-impacted groundwater was recovered. Measurable LNAPL
was not noted in the vac truck tank. A copy of the vacuum truck specifications is included in Appendix B. Eastern
Environmental Management, LLC of Rocky Mount, North Carolina disposed of the recovered fluid. The disposal
manifest is included in Appendix B.

Using the PID readings of the exhaust stack, air emission calculations indicated approximately 24.59 pounds (4.62912
gallons) of petroleum vapors were emitted through the exhaust stack. AFVR field measurements and emissions
calculations are provided in Appendix B. Cumulative AFVR recovery data and LNAPL thickness through time are
provided on Table 3.

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On February 14, 2023, ATC measured monitoring well MW-1 as a follow-up to the October 2022 AFVR event. On this
date, LNAPL was measured in monitoring well MW-1 at a thickness of 1.41 feet.

4.4 GROUNDWATER SAMPLING
On February 14, 2023, groundwater samples were collected from monitoring wells MW-2, MW-3, and MW-4.
Monitoring well MW-1 was not sampled on this date due to the presence of LNAPL within this well. The monitoring
wells were purged prior to sampling by removing a minimum of three well volumes of water from each well. After
allowing sufficient time for recharge, a representative groundwater sample was collected from each well using a new,
disposable Teflon bailer. Upon collection, the groundwater samples were placed into laboratory-approved containers,
packed in ice, and delivered under chain-of-custody to SGS North America (SGS) in Scott, Louisiana for analyses. The
groundwater samples were analyzed by EPA Method 6200B to include ethanol and oxygenates, EPA Method 504.1 for
ethylene dibromide (EDB), EPA Method 6020 for lead, and MADEP method for VPH.

5.0 SITE GEOLOGY AND HYDROGEOLOGY
5.1 DESCRIPTION OF SHALLOW SUBSURFACE GEOLOGY
According to the Web Soil Survey, the predominant site soil is Enon-Urban land complete (EuB) with 2 to 10 percent
slopes. Typically, this soil is composed of sandy loam and clay and is typically found on hillslopes on ridges. The parent
material is saprolite that has been derived from diorite and/or gabbro and/or diabase and/or gneiss. The soil is well
drained. The depth to water is more than 80 inches.

Soil encountered during the installation of monitoring wells MW-1 through MW-4 generally consisted of silt to clayey silt
to twenty feet bgs. The boring logs for monitoring wells MW-1 through MW-4 is provided in Appendix A.

5.2 GROUNDWATER OCCURRENCE
On February 14, 2023, ATC collected static water level measurements from monitoring wells MW-1 through MW-4.
Depths to water measurements were collected using an electronic oil/water interface probe. Depths to water
measurements ranged between 11.89 feet in monitoring well MW-3 to 13.16 feet in monitoring well MW-1. Table 4
provides a summary of well construction and depth-to-groundwater measurement.

5.3 GROUNDWATER FLOW DIRECTION
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 and current groundwater elevation data are included in Table 4. A
groundwater elevation contour map based on the February 2023 static water level data is included as Figure 4. Based on the
recent groundwater level measurements, groundwater appears to flow to the south across the site.

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6.0 ANALYTICAL RESULTS
6.1 SOIL ANALYTICAL RESULTS
Laboratory analytical results of the soil sample collected in close proximity to monitoring well MW-1 detected a benzene
concentration above its established Soil-to-Groundwater (STGW) Maximum Soil Contaminant Concentrations (MSCCs).
A summary of soil laboratory analytical results from the UST closure are provided in Table 5. Petroleum-related impacts
to soil are provided on Figure 5. A copy of the laboratory analytical report is included as Appendix C.

6.2 GROUNDWATER ANALYTICAL RESULTS
LNAPL was measured in monitoring well MW-1 at a thickness of 1.41 feet. Laboratory analytical results of the
groundwater sample collected from monitoring well MW-4 detected a dissolved benzene concentration above its
established 2L Standard but below its established Gross Contaminant Level (GCL). Dissolved target compound
concentrations, above established 2L Standards, were not detected in the groundwater samples collected from monitoring
wells MW-2 and MW-3. A summary of the groundwater analytical data is presented in Table 6. Dissolved contaminants
of concern are depicted on Figure 6. A copy of the laboratory analytical report is included as Appendix C.

7.0 CONCLUSIONS AND RECOMMENDATIONS
7.1 CONCLUSIONS
Based on the information obtained during this LSA, it appears the site has been impacted from a petroleum release.
• The subject facility is connected to the public water supply provided by the City of Greensboro Water
Department. Public water is available to the surrounding area and connection is not mandatory;
• Two water supply wells were identified within 1,500 feet of the source area. It was confirmed with the
City of Greensboro Water Department that these properties do not receive a water bill; therefore, these
properties utilize the water supply wells for potable purposes. The nearest potable water supply well was
identified approximately 610 feet southwest of the source area.
• One potential non-potable water supply well was identified approximately 780 feet south of the source
area. A water supply well survey was mailed to the identified property; however, the survey was not
returned.
• The subject facility is not located within an approved Wellhead Protection Area;
• Surface water features were not identified within 1,500 feet of the source area;
• Laboratory analytical results of the soil sample collected in close proximity to monitoring well MW-1
detected a benzene concentration above its established STGW-MSCC;
• LNAPL was detected in monitoring well MW-1;
• An AFVR event was conducted at the site. A total of 615 gallons of petroleum-impacted groundwater
was recovered during the AFVR event. Using the PID readings of the exhaust stack, air emission
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calculations indicated approximately 24.59 pounds (4.62912 gallons) of petroleum vapors were emitted
through the exhaust stack; and,
• Laboratory analytical results of the groundwater sample collected from monitoring well MW-4 detected a
dissolved benzene concentration above its established 2L Standard but below its established GCL.
Dissolved target compound concentrations, above established 2L Standards, were not detected in the
groundwater samples collected from monitoring wells MW-2 and MW-3.

7.2 RECOMMENDATIONS
The results of the LSA activities indicate that the subject facility meets the criteria for High Risk classification.

8.0 LIMITATIONS
This report has been prepared for the exclusive use of Circle K Stores, Inc. The opinions included herein are based on
information obtained during the study, on our experience in accordance with currently accepted hydrogeologic and
engineering practices, and relevant regulatory guidelines at this time and location. Other than this, no warranty is implied
or intended.

TABLES
TABLE 1
WATER SUPPLY WELL INFORMATION
CIRCLE K STORE #2723476
3302 S. HOLDEN ROAD
GREENSBOOR, GUILFORD COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #48631
Well ID PIN Property Owner(s)Owner Mailing Address
Property Address
(location of water
supply well)
Connected to
Municipal
Water
Water Supply
Well Present Usage Distance from
Source (feet)
Table can be cross-referenced to Figure 3. Water supply wells are randomly placed on parcel - exact locations are not know.
4104 Royal Avenue Greensboro,
NC 27407 4108 Royal Avenue No17842964644Norma Hernandez Potable 720 feet
southwestYes
Yes Potable 610 feet
southwest27842962697Felix Evagelista and Norma
Hernandez
4104 Royal Avenue Greensboro,
NC 27407 4104 Royal Avenue No
780 feet south37852063563Ketmany and Phaivanh Khamdy 3929 Daye Drive
Greensboro, NC 27407 3929 Daye Drive Yes Yes?Non-potable
TABLE 2
ADJACENT PROPERTY OWNER INFORMATION
CIRCLE K STORE #2723476
3302 S. HOLDEN ROAD
GREENSBORO, GUILFORD COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #48631
Zoning Classification
Parcel Identification Number
Observed Land Use
Site
Circle K Store #2723476 Circle K Stores, Inc.Not Zoned
3302 S. Holden Road P.O. Box 52085 7842977067
Greensboro, NC Phoenix, Arizona 85072 C-Store and Retail Fuel Outlet
North of the Site
Pantry Shop Z&S Holdings, LLC Not Zoned
32623 S. Holden Road 4033 Ban Oak Street 7842976305
Greensboro, NC High Point, North Carolina 27265 C-Store and Retail Fuel Outlet
North of the Site
BP Gas Station MM Fowler, Inc.Not Zoned
3227 S. Holden Road 4220 Neal Road 7842978596
Greensboro, NC Durham, North Carolina 27705 C-Store and Retail Fuel Outlet
East of the Site
Small Strip Mall DN Realty Investments, LLC Not Zoned
3301 S. Holden Road 162 W. Eagle Road 7852070202
Greensboro, NC Havertown, Pennsylvania 19083 Dry Cleaner, Salon, Small Businesses
South of the Site
Undeveloped - Wooded Hamze Properties, LLC Not Zoned
4006 Daye Drive 3110 Edwards Mill Road, Suite 100 7842968870
Greensboro, NC Raleigh, North Carolina 27612 Undeveloped - wooded
South of the Site
Residence Hilltop Holdings II LLC Not Zoned
3405 Osborne Road 4716 Hilltop Road 7842966866
Greensboro, NC Greensboro, North Carolina 27407 Residential
West of the Site
Hemphill Branch Library City of Greensboro Not Zoned
2301 W. Vandalia Road P.O. Box 3136 7842963956
Greensboro, NC Greensboro, North Carolina 27402 Library
Notes:
1. Zoning Classifications indicate those assigned by Guilford County, NC.
Property Location and Address Owner's Name and Address
TABLE 3
LNAPL RECOVERY INFORMATION
CIRCLE K STORE #2723476
3302 S. HOLDEN ROAD
GREENSBORO, GUILFORD COUNTY, NORTH CAROLINA
NCDEQ INCIDENT NO. 48631
Date Well ID
LNAPL Recovery
Method
Pre-AFVR LNAPL
Thickness (feet)
Post-AFVR
LNAPL
Thickness (feet)
Amount of
Vaporized Product
(gallons)
Amount of
Liquid (Water
and LNAPL)
(gallons)
Amount of
LNAPL
(gallons)
Total Amount
of LNAPL
Recovered
(gallons)
10/19/2022 MW-1 AFVR 1.39 4.63 615 ----
2/14/2023 MW-1 1.41
4.63 615 0.00 0.00
AFVR = Aggressive Fluid/Vapor Recovery
LNAPL = Light Non-Aqueous Phase Liquid
TOTALS
TABLE 4
MONITORING WELL CONSTRUCTION DETAILS
CIRCLE K STORE #2723476
3302 S. HOLDEN ROAD
GREENSBORO, GUILFORD COUNTY, NORTH CAROLINA
NCDEQ INCIDENT NO. 48631
Depth to
Water
(feet)
Depth to
LNAPL
(feet)
LNAPL
Thickness
(ft)
Groundwater
Elevation
(feet)
Depth to
Water
(feet)
Depth to
LNAPL
(feet)
LNAPL
Thickness
(ft)
Groundwater
Elevation
(feet)
Depth to
Water
(feet)
Depth to
LNAPL
(feet)
LNAPL
Thickness
(ft)
Groundwater
Elevation
(feet)
MW-1 9/15/2022 2 5-15 15 100.00 13.05 14.69 1.64 88.36*13.26 14.65 1.39 87.93*13.16 11.75 1.41 88.05*
MW-2 1/23/2023 2 5-20 20 100.53 12.10 ----88.43
MW-3 1/23/2023 2 5-20 20 98.81 11.89 ----86.92
MW-4 1/23/2023 2 5-20 20 100.64 12.65 ----87.99
Notes:
1. Elevation is referenced to an arbitrary on-site benchmark of 100.00 feet.
2. Total well depth measured from top of casing.
3. LNAPL denotes light non-aqueous phase liquid.
4. Groundwater elevation corrected for presence of LNAPL calculated by: [(TOC elevation - depth to groundwater)+(0.8581*Product Thickness)]
Well Not Installed
Well Not Installed
Well Not Installed
10/9/2022
Well Not Installed
Well Not Installed
Well Not Installed
2/14/2023
Monitoring
Well ID
Date
Installed
Well
Casing
Diameter
(Inches)
Screened
Interval
(feet)
Depth of
Well
(feet)
10/19/2022Top of
Casing
Elevation
(feet)
TABLE 5
SOIL ANALYTICAL RESULTS
CIRCLE K STORE #2723476
3302 S. HOLDEN ROAD
GREENSBORO, GUILFORD COUNTY, NORTH CAROLINA
NCDEQ INCIDENT NO.48631
Sample ID
Date
Sampled
Sample
Depth
(feet)
PID
Reading
(ppm)AcetoneBenzenesec-Butylbenzenetert-ButylbenzeneIPEEthylbenzeneIsopropylbenzenep-IsopropyltolueneMethyl ChlorideMethyl Ethyl KetoneNaphthalenen-PropylbenzeneToluene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneTotal XylenesC5-C8 AliphaticsC9-C18 AliphaticsC9-C22 AromaticsMW-1 (7.5-8.5)10/28/2022 7.5-8.5 2,233 0.483J 0.318 0.0592 0.00056J 0.0067 0.838 0.167 0.0312 0.0087 0.505 0.122 0.418 3.92 3.08 0.424 4.25 30.3 46.0 18.5
24 0.0072 2.2 1.7 0.32 8 1.3 0.12 0.014 16 0.2 1.4 5.4 6.6 6.6 6 68 540 31
14,000 12 1,560 1,560 156 60.3 1,560 1,560 51 9,380 5.5 1,560 1,250 156 156 3,120 939 1,500 469
Notes:
1. Concentrations reported in milligrams per kilogram (mg/kg).
2. "<" = not detected at or above the laboratory reporting limit.
3. Bold type denotes concentration is equal to or exceeds the Soil-to-Groundwater MSCC.
4. J denotes value estimated by project laboratory.
5. MSCC denotes Maximum Soil Contaminant Concentration.
ANALTYICAL METHOD EPA Method 8260 MADEP Method for VPH
Soil-to-Groundwater MSCCs (mg/kg)
Residential MSCCs (mg/kg)
TABLE 6
GROUNDWATER ANALYTICAL RESULTS
CIRCLE K STORE #2723476
3302 S. HOLDEN ROAD
GREENSBORO, GUILFORD COUNTY, NORTH CAROLINA
NCDEQ INCIDENT NO. 48631
EPA
Method
6020
Sample ID Date
Sampled
AcetoneBenzenen-Butylbenzenesec-ButylbenzeneIPEEthylbenzene2-HexanoneMethyl ChlorideIsopropylbenzenep-Isopropyltoluene4-Methyl-2pentanoneMTBENaphthalenen-PropylbenzeneTolueneTert-Amyl Methyl Ether1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneStyreneTotal XylenesVinyl AcetateLeadC5-C8 AliphaticsC9-C18 AliphaticsC9-C22 Aromatics10/4/2022
10/19/2022
(pre-AFVR)
2/14/2022
MW-2 2/14/2023 <10 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 0.076J <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 2.9 <100 <100 <100
MW-3 2/14/2023 1.2J 0.31J <0.50 0.29J 17.4 <0.50 <1.0 <0.50 0.24J 0.16J <0.50 18.2 <0.50 <0.50 <0.50 2.9 <0.50 <0.50 <0.50 <0.50 <0.50 1.1 91.5J <100 <100
MW-4 2/14/2023 16.7 18.5 0.21J 0.30J 0.28J 1.4 0.63J <0.50 1.8 0.18J 0.51 <0.50 2.6 1.3 1.8 <1.0 13.9 2.6 0.13J 44.4 0.25J 1.9 297 190 70.6J
6,000 1 70 70 70 600 40 3 70 25 100 20 6 70 600 128 400 400 70 500 88 15 400 700 200
6,000,000 5,000 5,900 14,750 70,000 80,000 40,000 3,000 30,500 11,700 100,000 20,000 6,000 26,100 260,000 128,000 28,500 24,100 70,000 50,000 88,000 15,000 NE NE NE
Notes:
1. Concentrations reported in micrograms per liter (ug/L).
2. NE = Not established.
3. Bold indicates concentration equals or exceeds NCAC 2L Groundwater Quality Standard.
MADEP Method for VPH
NCAC 2L Groundwater
Quality Standards (ug/L)
Gross Contaminant Level
(ug/L)
ANALTYICAL METHOD EPA Method 6200
1.64 feet LNAPL
MW-1
1.41 feet LNAPL
1.39 feet LNAPL
FIGURES
WEST VANDALIA ROADOSBORNE ROAD
SOUTH HOLDEN ROAD CIRCLE K#2723476UST BASINDITCHUNLEADEDPREMIUMDIESELNON-ETHONALPRODUCTPIPELINE1/2DISPENSER(TYPICAL)3/45/67/89/1011/1213WATERMETERSB-1/MW-1MW-2MW-4MW-3= MONITORING WELL
1,500' RADIUS1,000' RADIUS500' RADIUS
WEST VANDALIA ROADOSBORNE ROAD
SOUTH HOLDEN ROAD CIRCLE K#2723476UST BASINDITCHUNLEADEDPREMIUMDIESELNON-ETHONALPRODUCTPIPELINE1/2DISPENSER(TYPICAL)3/45/67/89/1011/1213WATERMETERSB-1/MW-1MW-2MW-4MW-3= GROUNDWATER ELEVATION IN FEET= MONITORING WELL LOCATION= GROUNDWATER ELEVATION CONTOUR= GROUNDWATER FLOW DIRECTION86.9288.0588.4387.998
8
.
2
5
8
8
.
0
0
8
7
.
7
5
8
7
.
5
0
8
7
.
2
5
8
7
.
0
082.87(DASHED WHERE INFERRED)1. GROUNDWATER MEASUREMENTS MADE 02/14/2023
WEST VANDALIA ROADOSBORNE ROAD
SOUTH HOLDEN ROAD CIRCLE K#2723476UST BASINDITCHUNLEADEDPREMIUMDIESELNON-ETHONALPRODUCTPIPELINE1/2DISPENSER(TYPICAL)3/45/67/89/1011/1213WATERMETERSB-1/MW-1MW-2MW-4MW-3= MONITORING WELL
WEST VANDALIA ROADOSBORNE ROAD
SOUTH HOLDEN ROAD CIRCLE K#2723476UST BASINDITCHUNLEADEDPREMIUMDIESELNON-ETHONALPRODUCTPIPELINE1/2DISPENSER(TYPICAL)3/45/67/89/1011/1213WATERMETERSB-1/MW-1MW-2MW-4MW-3= MONITORING WELL
APPENDIX A

BORING LOGS
AND
WELL CONSTRUCTION RECORDS
09-16-2022 S:\Enviro\Pantry\2723476 - Greensboro\Boring Logs\MW-1.borClient: Circle K
ATC Project No. CIRK3476LS
Greensboro, Guilford County, NC
3302 S. Holden Road
Circle K Store #2723476
BORING LOG: MW-1
(Page 1 of 1)
Date(s) Drilled : 8/15/2022
Drilling Contractor : Geologic Exploration
Drilling Method : Hollow Stem Auger
Boring Diameter : 8.25 inches
Sampling Method : Cuttings
Sampling Interval :
Logged By : Chris Hanley
Depth In Feet0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15 USCSGP
ML
CL
CL
CL GRAPHICDESCRIPTION
Concrete
Grayish-brown, sandy GRAVEL, dry
Tan & light gray, SILT, dry
Light brown, silty CLAY, medium platicity, moist
Light brown, silty CLAY, medium platicity, wet, petroelum odor
Light brown, silty CLAY, medium platicity, saturated, strong petroelum odor
End of boring
PID
(ppm)
5.1
143.3
MW-1 (3-5')
27.8
172.5
845.9
Well: MW-1
Grout
Bentonite
Sand Pack
Cover
Casing
Screen
Boring terminated 15 feet bgs (below ground surface).
Soil sample MW-1 (3-5') collected from 3 to 5 feet bgs.
ppm = parts per million
03-28-2023 C:\Users\jeremy.robbins\Desktop\Convert for MJ\MW-2.borClient: Circle K Stores, Inc.
Incident # 48631
Greensboro, Guilford County, North Carolina
3302 South Holden Road
Circle K Store #2723476
ft bgs = feet below ground surface.
Depth to water measured 1/23/2023.
MONITORING WELL: MW-2
(Page 1 of 1)
Date(s) Drilled : 1/23/2023
Drilling Contractor : SAEDACCO, Inc.
Drilling Method : Hollow Stem Auger
Boring Diameter : 8.25"
Sampling Method : Cuttings
Sampling Interval : Continuous
Logged By : Aaron D. Springer
Depth In Feet0
5
10
15
20 USCSAR
ML
ML GRAPHICDESCRIPTION
Asphalt and aggregate base.
CLAYEY SILT, dark tan with white, moist.
SILT, brown, dry. Wet at 7 ft bgs. Faint petroleum odor at 12 ft bgs.
End of Boring.
Elev.:
Well: MW-2
Grout
Bentonite
Sand
Casing
Screen
03-28-2023 C:\Users\jeremy.robbins\Desktop\Convert for MJ\MW-3.borClient: Circle K Stores, Inc.
Incident # 48631
Greensboro, Guilford County, North Carolina
3302 South Holden Road
Circle K Store #2723476
ft bgs = feet below ground surface.
Depth to water measured 1/23/2023.
MONITORING WELL: MW-3
(Page 1 of 1)
Date(s) Drilled : 1/23/2023
Drilling Contractor : SAEDACCO, Inc.
Drilling Method : Hollow Stem Auger
Boring Diameter : 8.25"
Sampling Method : Cuttings
Sampling Interval : Continuous
Logged By : Aaron D. Springer
Depth In Feet0
5
10
15
20 USCSAR
ML
ML
ML GRAPHICDESCRIPTION
Asphalt and aggregate base.
CLAYEY SILT, dark tan, moist to dry.
SILT, gray, moist. Wet at 8 ft bgs.
SILT, tan, saturated.
End of Boring.
Elev.:
Well: MW-3
Grout
Bentonite
Sand
Casing
Screen
03-28-2023 C:\Users\jeremy.robbins\Desktop\Convert for MJ\MW-4.borClient: Circle K Stores, Inc.
Incident # 48631
Greensboro, Guilford County, North Carolina
3302 South Holden Road
Circle K Store #2723476
ft bgs = feet below ground surface.
Depth to water measured 1/23/2023.
MONITORING WELL: MW-4
(Page 1 of 1)
Date(s) Drilled : 1/23/2023
Drilling Contractor : SAEDACCO, Inc.
Drilling Method : Hollow Stem Auger
Boring Diameter : 8.25"
Sampling Method : Cuttings
Sampling Interval : Continuous
Logged By : Aaron D. Springer
Depth In Feet0
5
10
15
20 USCSAR
ML
ML
ML GRAPHICDESCRIPTION
Asphalt and aggregate base.
SILT, tan, hard and compacted, moist to dry.
CLAYEY SILT, brown, moist. Wet at 10 ft bgs.
SILT, gray, wet.
End of Boring.
Elev.:
Well: MW-4
Grout
Bentonite
Sand
Casing
Screen
WELL CONSTRUCTION RECORD (GW-1) For Internal Use Only:
Form GW-1 North Carolina Department of Environmental Quality - Division of Water Resources Revised 6-6-2018
1.Well Contractor Information:
Well Contractor Name
NC Well Contractor Certification Number
Company Name
2.Well Construction Permit #: List all applicable well construction permits (i.e. UIC, County, State, Variance, etc.)
3.Well Use (check well use):
Water Supply Well: □Agricultural □Municipal/Public □Geothermal (Heating/Cooling Supply) □Residential Water Supply (single) □Industrial/Commercial □Residential Water Supply (shared) □Irrigation □Wells > 100,000 GPDNon-Water Supply Well: □Monitoring □Recovery
Injection Well: □Aquifer Recharge □Groundwater Remediation □Aquifer Storage and Recovery □Salinity Barrier □Aquifer Test □Stormwater Drainage □Experimental Technology □Subsidence Control □Geothermal (Closed Loop)□Tracer □Geothermal (Heating/Cooling Return) □Other (explain under #21 Remarks)
4. Date Well(s) Completed: Well ID#
5a. Well Location:
Facility/Owner Name Facility ID# (if applicable)
Physical Address, City, and Zip
County Parcel Identification No. (PIN)
5b. Latitude and longitude in degrees/minutes/seconds or decimal degrees: (if well field, one lat/long is sufficient)
N W
6.Is(are) the well(s): □Permanent or □Temporary
7.Is this a repair to an existing well: □Yes or □No
If this is a repair, fill out known well construction information and explain the nature of the repair under #21 remarks section or on the back of this form.
8. For Geoprobe/DPT or Closed-Loop Geothermal Wells having the same construction, only 1 GW-1 is needed. Indicate TOTAL NUMBER of wellsdrilled:
9. Total well depth below land surface: (ft.) For multiple wells list all depths if different (example- 3@200’ and 2@100′)
10.Static water level below top of casing: (ft.) If water level is above casing, use “+”
11. Borehole diameter: (in.)
12. Well construction method:(i.e. auger, rotary, cable, direct push, etc.)
FOR WATER SUPPLY WELLS ONLY:
13a. Yield (gpm) Method of test:
13b. Disinfection type: Amount:
14. WATER ZONES
FROM TO DESCRIPTION
ft. ft.
ft. ft.
15. OUTER CASING (for multi-cased wells) OR LINER (if applicable)FROM TO DIAMETER THICKNESS MATERIAL ft. ft. in.
16. INNER CASING OR TUBING (geothermal closed-loop)FROM TO DIAMETER THICKNESS MATERIAL
ft. ft. in.
ft. ft. in.
17. SCREENFROM TO DIAMETER SLOT SIZE THICKNESS MATERIAL
ft. ft. in.
ft. ft. in.
18. GROUT
FROM TO MATERIAL EMPLACEMENT METHOD & AMOUNT
ft. ft.
ft. ft.
ft. ft.
19. SAND/GRAVEL PACK (if applicable) FROM TO MATERIAL EMPLACEMENT METHOD
ft. ft.
ft. ft.
20. DRILLING LOG (attach additional sheets if necessary) FROM TO DESCRIPTION (color, hardness, soil/rock type, grain size, etc.)
ft. ft.
ft. ft.
ft. ft.
ft. ft.
ft. ft.
ft. ft.
ft. ft.
21. REMARKS
22.Certification:
Signature of Certified Well Contractor Date
By signing this form, I hereby certify that the well(s) was (were) constructed in accordance with 15A NCAC 02C .0100 or 15A NCAC 02C .0200 Well Construction Standards and that a copy of this record has been provided to the well owner.
23.Site diagram or additional well details:You may use the back of this page to provide additional well construction info (add 'See Over' in Remarks Box). You may also attach additional pages if necessary.
24.SUBMITTAL INSTRUCTIONS
Submit this GW-1 within 30 days of well completion per the following:
24a. For All Wells: Original form to Division of Water Resources (DWR), Information Processing Unit, 1617 MSC, Raleigh, NC 27699-1617
24b. For Injection Wells: Copy to DWR, Underground Injection Control (IUC) Program, 1636 MSC, Raleigh, NC 27699-1636
24c. For Water Supply and Open-Loop Geothermal Return Wells: Copy to the county environmental health department of the county where installed
24d. For Water Wells producing over 100,000 GPD: Copy to DWR, CCPCUA Permit Program, 1611 MSC, Raleigh, NC 27699-1611
Stefan Smith
3576A
SAEDACCO Inc
X
1-23-2023 MW-2
Circle K 3476
3302 S. Holden Rd., Greensboro, NC, 27407
Guilford
36.019761 79.846179
X
X
1
20
8
8.25"
HSA
0 5 2"SCH-40 PVC
5 20 2".010 SCH-40 PVC
0 3 Portland Pour
4 20 Sand 2
0 8 Silt
8 20 Moist silt
1 foot bentonite seal from 3 to 4 feet.
1/23/2023
Stefan Smith
3576A
SAEDACCO Inc
X
1-23-2023 MW-3
Circle K 3476
3302 S. Holden Rd., Greensboro, NC, 27407
Guilford
36.019491 79.846016
X
X
1
20
8
8.25"
HSA
0 5 2"SCH-40 PVC
5 20 2".010 SCH-40 PVC
0 3 Portland Pour
4 20 Sand 2
0 8 Silt
8 20 Moist silt
1 foot bentonite seal from 3 to 4 feet.
1/23/2023
Stefan Smith
3576A
SAEDACCO Inc
X
1-23-2023 MW-4
Circle K 3476
3302 S. Holden Rd., Greensboro, NC, 27407
Guilford
36.019398 79.846300
X
X
1
20
8
8.25"
HSA
0 5 2"SCH-40 PVC
5 20 2".010 SCH-40 PVC
0 3 Portland Pour
4 20 Sand 2
0 8 Silt
8 20 Moist silt
1 foot bentonite seal from 3 to 4 feet.
1/23/2023
APPENDIX B

AFVE MANIFEST, AFVE FIELD MEASUREMENTS AND
EMISSIONS CALCULATIONS, AND VACUUM TRUCK SPECIFICATIONS

AFVR DATA AND EMISSIONS CALCULATIONS (10/19/2022 EVENT)
CIRCLE K STORE #2723476
3302 S. HOLDEN ROAD
GREENSBORO, GUILFORD COUNTY, NORTH CAROLINA
NCDEQ INCIDENT NO. 48631
AGGRESSIVE FLUID VAPOR RECOVERY EVENT
SITE NAME: Circle K Store #2723476
INCIDENT NUMBER: 48631
AVERAGE DEPTH TO GROUNDWATER: Approximately 13-14 feet
IDENTIFY THE WELL AND THE I.D. OF EACH WELL USED FOR AFVR: MW-1
PROVIDE BLOWER SPECIFICATIONS OF THE VACUUM TRUCK (cfm @ in Hg): 434cfm @ 24in Hg
DRY STANDARD CUBIC FEET PER MINUTE (DSCFM) AIR FLOW CALCULATIONS (Qstd)
Date Time Vacuum Velocity Pipe ID Temp Rel Humid Water Qstd PPM T (K)Ps (Pa)Pv (Pa)
(inches of Hg)(ft/min)(in)(°F)(%)Vapor (%)(flow)(measured)
10/19/2022 7:00
10/19/2022 7:05 -23.00 168 6 50.1 100.0 7.58E-05 34 154.8 283.06 1219.7 1.22E+03
10/19/2022 7:15 -22.00 80 6 45.0 100.0 6.24E-05 16 46.8 280.22 1006.7 1.01E+03
10/19/2022 7:30 -21.00 86 6 52.9 100.0 8.42E-05 17 10.8 284.61 1352.7 1.35E+03
10/19/2022 7:45 -21.00 70 6 107.6 100.0 5.42E-04 12 22.8 315.00 8129.5 8.13E+03
10/19/2022 8:00 -19.00 165 6 172.4 100.0 4.65E-03 14 232.5 351.00 43364.8 4.34E+04
10/19/2022 8:15 -19.00 244 6 185.6 57.5 3.07E-03 27 175.9 358.33 58199.6 3.35E+04
10/19/2022 8:30 -18.00 156 6 187.4 63.2 3.77E-03 16 4030 359.33 60517.7 3.82E+04
10/19/2022 8:45 -16.00 137 6 191.7 63.6 4.44E-03 12 3232 361.72 66369.7 4.22E+04
10/19/2022 9:00 -16.00 108 6 198.1 75.0 7.99E-03 3 820.9 365.28 75949.4 5.70E+04
10/19/2022 9:30 -24.00 31 6 69.3 100.0 1.52E-04 6 2131 293.72 2420.3 2.42E+03
10/19/2022 10:00 -21.00 1 6 83.0 100.0 2.43E-04 0 361.9 301.33 3817.4 3.82E+03
10/19/2022 10:30 -20.00 2 6 108.7 100.0 5.62E-04 0 2182 315.61 8394.4 8.39E+03
10/19/2022 11:00 -20.00 4 6 121.2 100.0 8.33E-04 1 1490 322.56 11968.8 1.20E+04
10/19/2022 11:30 -19.00 52 6 103.1 100.0 4.70E-04 9 4280 312.50 7119.4 7.12E+03
10/19/2022 12:00 -19.00 206 6 158.8 100.0 2.81E-03 25 2197 343.44 31545.0 3.15E+04
10/19/2022 12:30 -20.00 4 6 92.4 100.0 3.32E-04 1 1325 306.56 5142.0 5.14E+03
10/19/2022 13:00 -19.00 15 6 122.5 100.0 8.68E-04 2 3159 323.28 12406.2 1.24E+04
10/19/2022 13:30 -19.00 5 6 118.1 100.0 7.56E-04 1 945.6 320.83 10978.7 1.10E+04
10/19/2022 14:00 -20.00 287 6 160.2 100.0 2.95E-03 34 3222 344.22 32619.6 3.26E+04
10/19/2022 14:30 -20.00 235 6 164.0 100.0 3.38E-03 26 2555 346.33 35693.5 3.57E+04
10/19/2022 15:00 -19.00 259 6 156.8 67.8 1.57E-03 37 2886 342.33 30061.9 2.04E+04
NOTES
Qstd = Flow at DSCFM
Vacuum = The level of vacuum being applied should be recorded from the vacuum truck tank (inches of Hg)
Velocity = The rate at which air flows is measured at the blower discharge piping (anemometer or pitot tube)
Pipe ID = The inside diameter of the blower discharge piping (from the vacuum truck)
Temperature = The temperature of the air stream exiting the blower discharge piping (dry bulb temp., in deg.°F)
Relative humidity = The % relative humidity of the air stream exiting the blower discharge piping
Water Vapor in % = Pounds of water per pound of dry air, derived from the Psychrometric chart (temp Vs relative humidity)
EQUATION
Qstd = (1-Water Vapor) * velocity * (PI * (diameter/24)^2) * (528°R/(Temp + 460))
Stingers in well MW-1 set at 14.75 feet bgs
AFVR DATA AND EMISSIONS CALCULATIONS (10/19/2022 EVENT)
CIRCLE K STORE #2723476
3302 S. HOLDEN ROAD
GREENSBORO, GUILFORD COUNTY, NORTH CAROLINA
NCDEQ INCIDENT NO. 48631
EMISSION CALCULATIONS
Elapsed
Time Flow Cg:m Cg PMRg PMR
(min)(DSCFM)(ppm)(#C - gas)(mg/dsm^3)(lb/dscf)(lb/hr)(lb)
5 34 154.8 4 619.2 3293 0.000206 0.42 0.52
20 16 46.8 4 187.2 230 1.43E-05 0.01 0.00
35 17 10.8 4 43.2 485 3.03E-05 0.02 0.01
50 12 22.8 4 91.2 4946 0.000309 0.27 0.07
65 14 232.5 4 930 3742 0.000234 0.20 0.05
80 27 175.9 4 703.6 3742 0.000234 0.38 0.10
95 16 4030 4 16120 85723 0.005352 5.00 1.25
110 12 3232 4 12928 68749 0.004292 3.12 0.78
125 3 820.9 4 3283.6 17462 0.00109 0.22 0.11
155 6 2131 4 8524 45329 0.00283 1.02 0.51
185 0 361.9 4 1447.6 7698 0.000481 0.01 0.00
215 0 2182 4 8728 46414 0.002898 0.06 0.03
245 1 1490 4 5960 31694 0.001979 0.08 0.04
275 9 4280 4 17120 91041 0.005684 3.11 1.56
305 25 2197 4 8788 46733 0.002918 4.34 2.17
335 1 1325 4 5300 28184 0.00176 0.08 0.04
365 2 3159 4 12636 67196 0.004195 0.61 0.31
395 1 945.6 4 3782.4 20114 0.001256 0.06 0.03
425 34 3222 4 12888 68536 0.004279 8.68 8.68
455 26 2555 4 10220 54348 0.003393 5.26 4.82
485 37 2886 4 11544 61389 0.003833 8.44 3.52
510
Total emissions in pounds 24.59
NOTES
PPM measured = Actual measurements (ppm) taken with a OVA or TVA at the blower discharge piping
K = Number of carbons in calibration gas: (Methane K = 1, Propane K = 3, Isobutylene = 4, or Hexane K = 6)
PPMg = PPMv, Volumetric concentration as gasoline emission, dry basis at STP
Cg:m = mg/dsm3, mass concentration of gasoline emission
Mg = 128 mg/mg-mole, molecular weight of gasoline (this value may vary depending on contaminant)
K3 = 24.07 dsm^3/1E6 mg-mole, mass to volume conversion factor at STP
Cg = lb/dcsf, mass concentration of gasoline emission, dry basis at STP
PMRg = lb/hr, pollutant mass removal rate of gasoline emission
PMR = pollutant mass removal of gasoline emission over time
Recovery:
615 Gallons total fluids
0 Gallons free product as a liquid
4.62912 Gallons of gasoline as vapor (assuming a specific density of 0.71 as a liquid)
PPM
measured K PPMg
APPENDIX C

LABORATORY REPORT
AND CHAIN-OF-CUSTODY DOCUMENTS

11/16/22
Technical Report for
Atlas
Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
SGS Job Number: LA84796
Sampling Date: 10/28/22
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
e-Hardcopy 2.0
Automated Report
26
SGS is the sole authority for authorizing edits or modifications to this document.
Unauthorized modification of this report is strictly prohibited.
Review standard terms at: http://www.sgs.com/en/terms-and-conditions
The results set forth herein are provided by SGS North America Inc.
Please share your ideas about
how we can serve you better at:
[e-mail]
1 of 26
LA84796
Table of Contents
-1-
Sections:
Section 1: Sample Summary ...................................................................................................3
Section 2: Summary of Hits ....................................................................................................4
Section 3: Sample Results ........................................................................................................5
3.1: LA84796-1: MW-1 (7.5-8.5) ........................................................................................6
Section 4: Misc. Forms ............................................................................................................10
4.1: Chain of Custody ...........................................................................................................11
Section 5: MS Volatiles - QC Data Summaries .....................................................................16
5.1: Method Blank Summary ................................................................................................17
5.2: Blank Spike/Blank Spike Duplicate Summary ..............................................................20
Section 6: GC Volatiles - QC Data Summaries .....................................................................23
6.1: Method Blank Summary ................................................................................................24
6.2: Blank Spike/Blank Spike Duplicate Summary ..............................................................25
6.3: Duplicate Summary .......................................................................................................26 1234562 of 26
LA84796
SGS North America Inc.
Sample Summary
Atlas
Job No:LA84796
Circle K#2723476, 3302 S. Holden Road, Greensboro, 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
LA84796-1 10/28/22 10:10 CH 11/01/22 SO Soil MW-1 (7.5-8.5)
Soil samples reported on a dry weight basis unless otherwise indicated on result page.
3 of 26
LA847961
Summary of Hits Page 1 of 1
Job Number:LA84796
Account:Atlas
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Collected:10/28/22
Lab Sample ID Client Sample ID Result/
Analyte Qual RL MDL Units Method
LA84796-1 MW-1 (7.5-8.5)
Acetone 0.483 J 4.8 0.21 mg/kg SW846 8260D
Benzene 0.318 0.00066 0.00026 mg/kg SW846 8260D
sec-Butylbenzene 0.0592 0.0066 0.00043 mg/kg SW846 8260D
tert-Butylbenzene 0.00056 J 0.0013 0.00038 mg/kg SW846 8260D
Di-Isopropyl Ether 0.0067 0.0013 0.00019 mg/kg SW846 8260D
Ethylbenzene 0.838 0.097 0.025 mg/kg SW846 8260D
Isopropylbenzene 0.167 0.0066 0.00037 mg/kg SW846 8260D
p-Isopropyltoluene 0.0312 0.0066 0.00045 mg/kg SW846 8260D
Methyl Chloride 0.0087 0.0066 0.00040 mg/kg SW846 8260D
Methyl Ethyl Ketone 0.505 0.017 0.0010 mg/kg SW846 8260D
Naphthalene 0.122 0.0066 0.00076 mg/kg SW846 8260D
n-Propylbenzene 0.418 0.0066 0.00056 mg/kg SW846 8260D
Toluene 3.92 0.48 0.017 mg/kg SW846 8260D
1,2,4-Trimethylbenzene 3.08 0.48 0.037 mg/kg SW846 8260D
1,3,5-Trimethylbenzene 0.424 0.0066 0.00033 mg/kg SW846 8260D
m,p-Xylene 2.74 0.19 0.044 mg/kg SW846 8260D
o-Xylene 1.51 0.097 0.025 mg/kg SW846 8260D
Xylene (total)4.25 0.19 0.11 mg/kg SW846 8260D
C5- C8 Aliphatics (Unadj.)30.3 9.7 4.8 mg/kg MADEP VPH REV 2.1
C9- C12 Aliphatics (Unadj.)46.0 9.7 4.8 mg/kg MADEP VPH REV 2.1
C9- C10 Aromatics (Unadj.)18.5 9.7 4.8 mg/kg MADEP VPH REV 2.1
4 of 26
LA847962
SGS North America Inc.
Sample Results
Report of Analysis
Scott, LA
Section 3
5 of 26
LA847963
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:MW-1 (7.5-8.5)
Lab Sample ID:LA84796-1 Date Sampled:10/28/22
Matrix:SO - Soil Date Received:11/01/22
Method:SW846 8260D Percent Solids:67.5
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 1I102657.D 1 11/10/22 19:24 JY n/a n/a V1I3667
Run #2 2G506661.D 1 11/11/22 18:32 JY n/a n/a V2G6366
Initial Weight Final Volume Methanol Aliquot
Run #1 5.6 g
Run #2 5.1 g 5.0 ml 100 ul
VOA List for NC
CAS No.Compound Result RL MDL Units Q
67-64-1 Acetone 0.483 a 4.8 0.21 mg/kg J
71-43-2 Benzene 0.318 0.00066 0.00026 mg/kg
108-86-1 Bromobenzene ND 0.0013 0.00040 mg/kg
74-97-5 Bromochloromethane ND 0.0013 0.00036 mg/kg
75-27-4 Bromodichloromethane ND 0.0013 0.00042 mg/kg
75-25-2 Bromoform ND 0.0013 0.0011 mg/kg
104-51-8 n-Butylbenzene ND 0.0066 0.00043 mg/kg
135-98-8 sec-Butylbenzene 0.0592 0.0066 0.00043 mg/kg
98-06-6 tert-Butylbenzene 0.00056 0.0013 0.00038 mg/kg J
56-23-5 Carbon Tetrachloride ND 0.0013 0.00052 mg/kg
108-90-7 Chlorobenzene ND 0.0013 0.00033 mg/kg
75-00-3 Chloroethane ND 0.0013 0.00045 mg/kg
67-66-3 Chloroform ND 0.0013 0.00035 mg/kg
95-49-8 o-Chlorotoluene ND 0.0066 0.00065 mg/kg
106-43-4 p-Chlorotoluene ND 0.0066 0.000086mg/kg
124-48-1 Dibromochloromethane ND 0.0013 0.00038 mg/kg
96-12-8 1,2-Dibromo-3-chloropropane ND 0.0066 0.0012 mg/kg
106-93-4 1,2-Dibromoethane ND 0.0013 0.00076 mg/kg
75-71-8 Dichlorodifluoromethane ND 0.0013 0.00087 mg/kg
541-73-1 m-Dichlorobenzene ND 0.0013 0.00042 mg/kg
95-50-1 o-Dichlorobenzene ND 0.0013 0.00026 mg/kg
106-46-7 p-Dichlorobenzene ND 0.0013 0.00034 mg/kg
75-34-3 1,1-Dichloroethane ND 0.0013 0.00030 mg/kg
107-06-2 1,2-Dichloroethane ND 0.0013 0.00029 mg/kg
75-35-4 1,1-Dichloroethylene ND 0.0013 0.00054 mg/kg
156-59-2 cis-1,2-Dichloroethylene ND 0.0013 0.00042 mg/kg
156-60-5 trans-1,2-Dichloroethylene ND 0.0013 0.00027 mg/kg
78-87-5 1,2-Dichloropropane ND 0.0013 0.00017 mg/kg
142-28-9 1,3-Dichloropropane ND 0.0013 0.00031 mg/kg
594-20-7 2,2-Dichloropropane ND 0.0013 0.00045 mg/kg
563-58-6 1,1-Dichloropropene ND 0.0013 0.00044 mg/kg
10061-01-5 cis-1,3-Dichloropropene ND 0.0013 0.00031 mg/kg
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
6 of 26
LA8479633.1
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:MW-1 (7.5-8.5)
Lab Sample ID:LA84796-1 Date Sampled:10/28/22
Matrix:SO - Soil Date Received:11/01/22
Method:SW846 8260D Percent Solids:67.5
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
VOA List for NC
CAS No.Compound Result RL MDL Units Q
10061-02-6 trans-1,3-Dichloropropene ND 0.0013 0.00034 mg/kg
108-20-3 Di-Isopropyl Ether 0.0067 0.0013 0.00019 mg/kg
64-17-5 Ethyl Alcohol ND 0.53 0.033 mg/kg
100-41-4 Ethylbenzene 0.838 a 0.097 0.025 mg/kg
591-78-6 2-Hexanone ND 0.017 0.00087 mg/kg
87-68-3 Hexachlorobutadiene ND 0.0066 0.00040 mg/kg
98-82-8 Isopropylbenzene 0.167 0.0066 0.00037 mg/kg
99-87-6 p-Isopropyltoluene 0.0312 0.0066 0.00045 mg/kg
74-83-9 Methyl Bromide ND 0.013 0.0021 mg/kg
74-87-3 Methyl Chloride 0.0087 0.0066 0.00040 mg/kg
74-95-3 Methylene Bromide ND 0.0013 0.00038 mg/kg
75-09-2 Methylene Chloride ND 0.0066 0.00073 mg/kg
78-93-3 Methyl Ethyl Ketone 0.505 0.017 0.0010 mg/kg
108-10-1 4-Methyl-2-pentanone ND 0.017 0.00068 mg/kg
1634-04-4 Methyl Tert Butyl Ether ND 0.0013 0.00014 mg/kg
91-20-3 Naphthalene 0.122 0.0066 0.00076 mg/kg
103-65-1 n-Propylbenzene 0.418 0.0066 0.00056 mg/kg
100-42-5 Styrene ND 0.0013 0.00019 mg/kg
630-20-6 1,1,1,2-Tetrachloroethane ND 0.0013 0.00026 mg/kg
79-34-5 1,1,2,2-Tetrachloroethane ND 0.0013 0.00020 mg/kg
127-18-4 Tetrachloroethylene ND 0.0013 0.00045 mg/kg
108-88-3 Toluene 3.92 a 0.48 0.017 mg/kg
87-61-6 1,2,3-Trichlorobenzene ND 0.0066 0.00043 mg/kg
120-82-1 1,2,4-Trichlorobenzene ND 0.0066 0.00027 mg/kg
71-55-6 1,1,1-Trichloroethane ND 0.0013 0.00046 mg/kg
79-00-5 1,1,2-Trichloroethane ND 0.0013 0.00020 mg/kg
79-01-6 Trichloroethylene ND 0.0013 0.00066 mg/kg
75-69-4 Trichlorofluoromethane ND 0.0013 0.00048 mg/kg
96-18-4 1,2,3-Trichloropropane ND 0.0066 0.00033 mg/kg
95-63-6 1,2,4-Trimethylbenzene 3.08 a 0.48 0.037 mg/kg
108-67-8 1,3,5-Trimethylbenzene 0.424 0.0066 0.00033 mg/kg
108-05-4 Vinyl Acetate ND 0.0066 0.00047 mg/kg
75-01-4 Vinyl Chloride ND 0.0013 0.00035 mg/kg
m,p-Xylene 2.74 a 0.19 0.044 mg/kg
95-47-6 o-Xylene 1.51 a 0.097 0.025 mg/kg
1330-20-7 Xylene (total)4.25 a 0.19 0.11 mg/kg
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 81%96%59-143%
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 26
LA8479633.1
SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:MW-1 (7.5-8.5)
Lab Sample ID:LA84796-1 Date Sampled:10/28/22
Matrix:SO - Soil Date Received:11/01/22
Method:SW846 8260D Percent Solids:67.5
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
VOA List for NC
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
2037-26-5 Toluene-D8 90%101%52-159%
460-00-4 4-Bromofluorobenzene 98%106%38-183%
(a) Result is from Run# 2
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
8 of 26
LA8479633.1
SGS North America Inc.
Report of Analysis Page 1 of 1
Client Sample ID:MW-1 (7.5-8.5)
Lab Sample ID:LA84796-1 Date Sampled:10/28/22
Matrix:SO - Soil Date Received:11/01/22
Method:MADEP VPH REV 2.1 Percent Solids:67.5
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 LE039185.D 1 11/05/22 03:52 KM n/a n/a GLE2310
Run #2 a LE039196.D 1 11/07/22 14:25 KM n/a n/a GLE2311
Initial Weight Final Volume Methanol Aliquot
Run #1 5.1 g 5.0 ml 100 ul
Run #2 5.1 g 5.0 ml 100 ul
MA VPH list
CAS No.Compound Result RL MDL Units Q
C5- C8 Aliphatics (Unadj.)30.3 9.7 4.8 mg/kg
C9- C12 Aliphatics (Unadj.)46.0 9.7 4.8 mg/kg
C9- C10 Aromatics (Unadj.)18.5 9.7 4.8 mg/kg
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
615-59-8 2,5-Dibromotoluene 178% b 160% b 70-130%
615-59-8 2,5-Dibromotoluene 173% b 166% b 70-130%
(a) Confirmation run for surrogate recoveries.
(b) Outside control limits due to matrix interference. Confirmed by reanalysis.
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
9 of 26
LA8479633.1
SGS North America Inc.
Misc. Forms
Custody Documents and Other Forms
Includes the following where applicable:
• Chain of Custody
Scott, LA
Section 4
10 of 26
LA847964
LA84796: Chain of Custody
Page 1 of 5
11 of 26
LA8479644.1
LA84796: Chain of Custody
Page 2 of 5
12 of 26
LA8479644.1
LA84796: Chain of Custody
Page 3 of 5
13 of 26
LA8479644.1
Job Number:LA84796 Client:ATC ASSOCIATES
Date / Time Received:11/1/2022 9:20:00 AM Delivery Method:FEDEX
Project:CIRCLE K #2723476
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:
IR002;
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: (1.8/1.6);
SGS Sample Receipt Summary
LA84796: Chain of Custody
Page 4 of 5
14 of 26
LA8479644.1
Page 2 of 2
Problem Resolution
CSR:Response Date:
Response:
Job Number:LA84796
LA84796: Chain of Custody
Page 5 of 5
15 of 26
LA8479644.1
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
16 of 26
LA847965
Method Blank Summary Page 1 of 2
Job Number:LA84796
Account:ATCNCR Atlas
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V1I3667-MB1 1I102634.D 1 11/10/22 JY n/a n/a V1I3667
The QC reported here applies to the following samples:Method: SW846 8260D
LA84796-1
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene ND 0.50 0.20 ug/kg
108-86-1 Bromobenzene ND 1.0 0.30 ug/kg
74-97-5 Bromochloromethane ND 1.0 0.27 ug/kg
75-27-4 Bromodichloromethane ND 1.0 0.32 ug/kg
75-25-2 Bromoform ND 1.0 0.80 ug/kg
104-51-8 n-Butylbenzene ND 5.0 0.32 ug/kg
135-98-8 sec-Butylbenzene ND 5.0 0.33 ug/kg
98-06-6 tert-Butylbenzene ND 1.0 0.29 ug/kg
56-23-5 Carbon Tetrachloride ND 1.0 0.39 ug/kg
108-90-7 Chlorobenzene ND 1.0 0.25 ug/kg
75-00-3 Chloroethane ND 1.0 0.34 ug/kg
67-66-3 Chloroform ND 1.0 0.26 ug/kg
95-49-8 o-Chlorotoluene ND 5.0 0.49 ug/kg
106-43-4 p-Chlorotoluene ND 5.0 0.065 ug/kg
124-48-1 Dibromochloromethane ND 1.0 0.29 ug/kg
96-12-8 1,2-Dibromo-3-chloropropane ND 5.0 0.89 ug/kg
106-93-4 1,2-Dibromoethane ND 1.0 0.57 ug/kg
75-71-8 Dichlorodifluoromethane ND 1.0 0.65 ug/kg
541-73-1 m-Dichlorobenzene ND 1.0 0.32 ug/kg
95-50-1 o-Dichlorobenzene ND 1.0 0.19 ug/kg
106-46-7 p-Dichlorobenzene ND 1.0 0.26 ug/kg
75-34-3 1,1-Dichloroethane ND 1.0 0.23 ug/kg
107-06-2 1,2-Dichloroethane ND 1.0 0.22 ug/kg
75-35-4 1,1-Dichloroethylene ND 1.0 0.41 ug/kg
156-59-2 cis-1,2-Dichloroethylene ND 1.0 0.31 ug/kg
156-60-5 trans-1,2-Dichloroethylene ND 1.0 0.20 ug/kg
78-87-5 1,2-Dichloropropane ND 1.0 0.13 ug/kg
142-28-9 1,3-Dichloropropane ND 1.0 0.24 ug/kg
594-20-7 2,2-Dichloropropane ND 1.0 0.34 ug/kg
563-58-6 1,1-Dichloropropene ND 1.0 0.33 ug/kg
10061-01-5 cis-1,3-Dichloropropene ND 1.0 0.24 ug/kg
10061-02-6 trans-1,3-Dichloropropene ND 1.0 0.26 ug/kg
108-20-3 Di-Isopropyl Ether ND 1.0 0.15 ug/kg
64-17-5 Ethyl Alcohol 32.9 400 25 ug/kg J
591-78-6 2-Hexanone ND 13 0.66 ug/kg
87-68-3 Hexachlorobutadiene ND 5.0 0.30 ug/kg
17 of 26
LA8479655.1.1
Method Blank Summary Page 2 of 2
Job Number:LA84796
Account:ATCNCR Atlas
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V1I3667-MB1 1I102634.D 1 11/10/22 JY n/a n/a V1I3667
The QC reported here applies to the following samples:Method: SW846 8260D
LA84796-1
CAS No.Compound Result RL MDL Units Q
98-82-8 Isopropylbenzene ND 5.0 0.28 ug/kg
99-87-6 p-Isopropyltoluene ND 5.0 0.34 ug/kg
74-83-9 Methyl Bromide ND 10 1.6 ug/kg
74-87-3 Methyl Chloride ND 5.0 0.30 ug/kg
74-95-3 Methylene Bromide ND 1.0 0.29 ug/kg
75-09-2 Methylene Chloride 0.61 5.0 0.56 ug/kg J
78-93-3 Methyl Ethyl Ketone ND 13 0.77 ug/kg
108-10-1 4-Methyl-2-pentanone ND 13 0.52 ug/kg
1634-04-4 Methyl Tert Butyl Ether ND 1.0 0.10 ug/kg
91-20-3 Naphthalene 1.5 5.0 0.57 ug/kg J
103-65-1 n-Propylbenzene ND 5.0 0.43 ug/kg
100-42-5 Styrene ND 1.0 0.15 ug/kg
630-20-6 1,1,1,2-Tetrachloroethane ND 1.0 0.20 ug/kg
79-34-5 1,1,2,2-Tetrachloroethane ND 1.0 0.15 ug/kg
127-18-4 Tetrachloroethylene ND 1.0 0.34 ug/kg
87-61-6 1,2,3-Trichlorobenzene ND 5.0 0.33 ug/kg
120-82-1 1,2,4-Trichlorobenzene 0.22 5.0 0.21 ug/kg J
71-55-6 1,1,1-Trichloroethane ND 1.0 0.35 ug/kg
79-00-5 1,1,2-Trichloroethane ND 1.0 0.15 ug/kg
79-01-6 Trichloroethylene ND 1.0 0.50 ug/kg
75-69-4 Trichlorofluoromethane ND 1.0 0.36 ug/kg
96-18-4 1,2,3-Trichloropropane ND 5.0 0.25 ug/kg
108-67-8 1,3,5-Trimethylbenzene ND 5.0 0.25 ug/kg
108-05-4 Vinyl Acetate ND 5.0 0.35 ug/kg
75-01-4 Vinyl Chloride ND 1.0 0.26 ug/kg
CAS No.Surrogate Recoveries Limits
17060-07-0 1,2-Dichloroethane-D4 79%59-143%
2037-26-5 Toluene-D8 100%52-159%
460-00-4 4-Bromofluorobenzene 98%38-183%
18 of 26
LA8479655.1.1
Method Blank Summary Page 1 of 1
Job Number:LA84796
Account:ATCNCR Atlas
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2G6366-MB1 2G506641.D 1 11/11/22 JY n/a n/a V2G6366
The QC reported here applies to the following samples:Method: SW846 8260B
LA84796-1
CAS No.Compound Result RL MDL Units Q
67-64-1 Acetone ND 2500 110 ug/kg
100-41-4 Ethylbenzene ND 49 13 ug/kg
108-88-3 Toluene 17.1 250 8.9 ug/kg J
95-63-6 1,2,4-Trimethylbenzene ND 250 19 ug/kg
m,p-Xylene ND 98 22 ug/kg
95-47-6 o-Xylene ND 49 13 ug/kg
1330-20-7 Xylene (total)ND 98 57 ug/kg
CAS No.Surrogate Recoveries Limits
17060-07-0 1,2-Dichloroethane-D4 100%59-143%
2037-26-5 Toluene-D8 103%52-159%
460-00-4 4-Bromofluorobenzene 104%38-183%
19 of 26
LA8479655.1.2
Blank Spike/Blank Spike Duplicate Summary Page 1 of 2
Job Number:LA84796
Account:ATCNCR Atlas
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V1I3667-BS2 1I102635.D 1 11/10/22 JY n/a n/a V1I3667
V1I3667-BSD2 1I102636.D 1 11/10/22 JY n/a n/a V1I3667
The QC reported here applies to the following samples:Method: SW846 8260D
LA84796-1
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/kg ug/kg %ug/kg %RPD Rec/RPD
71-43-2 Benzene 20 22.1 111 21.7 109 2 67-135/30
108-86-1 Bromobenzene 20 22.3 112 21.8 109 2 54-144/30
74-97-5 Bromochloromethane 20 21.6 108 21.9 110 1 50-147/30
75-27-4 Bromodichloromethane 20 17.7 89 17.8 89 1 54-146/30
75-25-2 Bromoform 20 18.0 90 18.4 92 2 49-145/30
104-51-8 n-Butylbenzene 20 23.6 118 22.4 112 5 47-160/30
135-98-8 sec-Butylbenzene 20 25.9 130 25.0 125 4 51-155/30
98-06-6 tert-Butylbenzene 20 23.6 118 23.2 116 2 53-152/30
56-23-5 Carbon Tetrachloride 20 14.2 71 14.3 72 1 50-152/30
108-90-7 Chlorobenzene 20 21.9 110 21.7 109 1 57-144/30
75-00-3 Chloroethane 20 19.4 97 19.0 95 2 38-176/30
67-66-3 Chloroform 20 17.9 90 18.1 91 1 53-147/30
95-49-8 o-Chlorotoluene 20 24.3 122 23.8 119 2 52-151/30
106-43-4 p-Chlorotoluene 20 24.3 122 24.1 121 1 52-150/30
124-48-1 Dibromochloromethane 20 14.6 73 14.9 75 2 54-146/30
96-12-8 1,2-Dibromo-3-chloropropane 20 19.2 96 18.4 92 4 51-145/30
106-93-4 1,2-Dibromoethane 20 21.8 109 22.1 111 1 55-145/30
75-71-8 Dichlorodifluoromethane 20 18.8 94 18.6 93 1 24-179/30
541-73-1 m-Dichlorobenzene 20 23.8 119 23.3 117 2 54-147/30
95-50-1 o-Dichlorobenzene 20 23.3 117 23.4 117 0 55-144/30
106-46-7 p-Dichlorobenzene 20 23.8 119 23.4 117 2 54-147/30
75-34-3 1,1-Dichloroethane 20 18.9 95 19.3 97 2 53-148/30
107-06-2 1,2-Dichloroethane 20 17.9 90 17.7 89 1 55-144/30
75-35-4 1,1-Dichloroethylene 20 15.7 79 16.0 80 2 49-153/30
156-59-2 cis-1,2-Dichloroethylene 20 19.8 99 20.2 101 2 52-147/30
156-60-5 trans-1,2-Dichloroethylene 20 19.4 97 19.3 97 1 51-152/30
78-87-5 1,2-Dichloropropane 20 22.5 113 22.8 114 1 56-145/30
142-28-9 1,3-Dichloropropane 20 22.2 111 22.0 110 1 53-145/30
594-20-7 2,2-Dichloropropane 20 17.7 89 18.3 92 3 35-176/30
563-58-6 1,1-Dichloropropene 20 18.6 93 18.7 94 1 49-157/30
10061-01-5 cis-1,3-Dichloropropene 20 19.7 99 19.9 100 1 54-148/30
10061-02-6 trans-1,3-Dichloropropene 20 18.4 92 18.7 94 2 53-151/30
108-20-3 Di-Isopropyl Ether 20 22.5 113 22.3 112 1 85-120/30
64-17-5 Ethyl Alcohol 400 390 98 452 113 15 31-164/30
591-78-6 2-Hexanone 50 47.7 95 51.9 104 8 45-148/30
87-68-3 Hexachlorobutadiene 20 25.9 130 24.6 123 5 48-168/30
* = Outside of Control Limits.
20 of 26
LA8479655.2.1
Blank Spike/Blank Spike Duplicate Summary Page 2 of 2
Job Number:LA84796
Account:ATCNCR Atlas
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V1I3667-BS2 1I102635.D 1 11/10/22 JY n/a n/a V1I3667
V1I3667-BSD2 1I102636.D 1 11/10/22 JY n/a n/a V1I3667
The QC reported here applies to the following samples:Method: SW846 8260D
LA84796-1
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/kg ug/kg %ug/kg %RPD Rec/RPD
98-82-8 Isopropylbenzene 20 24.5 123 24.1 121 2 52-151/30
99-87-6 p-Isopropyltoluene 20 26.2 131 25.2 126 4 50-155/30
74-83-9 Methyl Bromide 20 19.5 98 20.1 101 3 40-170/30
74-87-3 Methyl Chloride 20 21.2 106 20.9 105 1 39-152/30
74-95-3 Methylene Bromide 20 20.3 102 20.0 100 1 53-147/30
75-09-2 Methylene Chloride 20 20.7 104 20.6 103 0 51-142/30
78-93-3 Methyl Ethyl Ketone 50 56.3 113 57.7 115 2 48-150/30
108-10-1 4-Methyl-2-pentanone 50 62.6 125 62.2 124 1 50-151/30
1634-04-4 Methyl Tert Butyl Ether 20 20.3 102 20.4 102 0 61-142/30
91-20-3 Naphthalene 20 19.8 99 20.3 102 2 58-147/30
103-65-1 n-Propylbenzene 20 25.8 129 24.7 124 4 50-154/30
100-42-5 Styrene 20 24.3 122 24.1 121 1 56-145/30
630-20-6 1,1,1,2-Tetrachloroethane 20 19.4 97 19.5 98 1 56-147/30
79-34-5 1,1,2,2-Tetrachloroethane 20 23.2 116 23.3 117 0 55-141/30
127-18-4 Tetrachloroethylene 20 21.3 107 20.9 105 2 54-156/30
87-61-6 1,2,3-Trichlorobenzene 20 23.8 119 23.9 120 0 51-157/30
120-82-1 1,2,4-Trichlorobenzene 20 25.1 126 24.7 124 2 48-163/30
71-55-6 1,1,1-Trichloroethane 20 16.4 82 16.9 85 3 52-153/30
79-00-5 1,1,2-Trichloroethane 20 22.7 114 22.4 112 1 55-144/30
79-01-6 Trichloroethylene 20 21.9 110 21.4 107 2 56-151/30
75-69-4 Trichlorofluoromethane 20 14.8 74 14.5 73 2 36-171/30
96-18-4 1,2,3-Trichloropropane 20 21.7 109 22.0 110 1 45-139/30
108-67-8 1,3,5-Trimethylbenzene 20 24.6 123 24.0 120 2 51-153/30
108-05-4 Vinyl Acetate 20 23.6 118 23.1 116 2 23-188/30
75-01-4 Vinyl Chloride 20 21.0 105 21.2 106 1 42-155/30
CAS No.Surrogate Recoveries BSP BSD Limits
17060-07-0 1,2-Dichloroethane-D4 78%79%59-143%
2037-26-5 Toluene-D8 101%100%52-159%
460-00-4 4-Bromofluorobenzene 95%95%38-183%
* = Outside of Control Limits.
21 of 26
LA8479655.2.1
Blank Spike/Blank Spike Duplicate Summary Page 1 of 1
Job Number:LA84796
Account:ATCNCR Atlas
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2G6366-BS1 2G506637.D 1 11/11/22 JY n/a n/a V2G6366
V2G6366-BSD1 2G506639.D 1 11/11/22 JY n/a n/a V2G6366
The QC reported here applies to the following samples:Method: SW846 8260D
LA84796-1
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/kg ug/kg %ug/kg %RPD Rec/RPD
67-64-1 Acetone 2450 2840 116 2810 115 1 40-153/30
100-41-4 Ethylbenzene 980 984 100 956 98 3 69-136/30
108-88-3 Toluene 980 1040 106 1010 103 3 71-135/30
95-63-6 1,2,4-Trimethylbenzene 980 984 100 970 99 1 50-153/30
m,p-Xylene 1960 1880 96 1830 93 3 70-140/30
95-47-6 o-Xylene 980 969 99 924 94 5 70-132/30
1330-20-7 Xylene (total)2940 2840 97 2750 94 3 69-138/30
CAS No.Surrogate Recoveries BSP BSD Limits
17060-07-0 1,2-Dichloroethane-D4 104%103%59-143%
2037-26-5 Toluene-D8 101%103%52-159%
460-00-4 4-Bromofluorobenzene 99%102%38-183%
* = Outside of Control Limits.
22 of 26
LA8479655.2.2
SGS North America Inc.
GC Volatiles
QC Data Summaries
Includes the following where applicable:
• Method Blank Summaries
• Blank Spike Summaries
• Matrix Spike and Duplicate Summaries
Scott, LA
Section 6
23 of 26
LA847966
Method Blank Summary Page 1 of 1
Job Number:LA84796
Account:ATCNCR Atlas
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
GLE2310-MB1 LE039163.D 1 11/04/22 KM n/a n/a GLE2310
The QC reported here applies to the following samples:Method: MADEP VPH REV 2.1
LA84796-1
CAS No.Compound Result RL MDL Units Q
C5- C8 Aliphatics (Unadj.)ND 5000 2500 ug/kg
C9- C12 Aliphatics (Unadj.)ND 5000 2500 ug/kg
C9- C10 Aromatics (Unadj.)ND 5000 2500 ug/kg
CAS No.Surrogate Recoveries Limits
615-59-8 2,5-Dibromotoluene 87%70-130%
615-59-8 2,5-Dibromotoluene 85%70-130%
24 of 26
LA8479666.1.1
Blank Spike/Blank Spike Duplicate Summary Page 1 of 1
Job Number:LA84796
Account:ATCNCR Atlas
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
GLE2310-BS1 LE039161.D 1 11/04/22 KM n/a n/a GLE2310
GLE2310-BSD1 LE039162.D 1 11/04/22 KM n/a n/a GLE2310
The QC reported here applies to the following samples:Method: MADEP VPH REV 2.1
LA84796-1
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/kg ug/kg %ug/kg %RPD Rec/RPD
C5- C8 Aliphatics (Unadj.)6000 5640 94 5670 95 1 70-130/25
C9- C12 Aliphatics (Unadj.)6000 5950 99 5730 96 4 70-130/25
C9- C10 Aromatics (Unadj.)2000 2090 105 2080 104 0 70-130/25
CAS No.Surrogate Recoveries BSP BSD Limits
615-59-8 2,5-Dibromotoluene 96%97%70-130%
615-59-8 2,5-Dibromotoluene 97%98%70-130%
* = Outside of Control Limits.
25 of 26
LA8479666.2.1
Duplicate Summary Page 1 of 1
Job Number:LA84796
Account:ATCNCR Atlas
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
FA99585-1RDUP LE039165.D 1 11/04/22 KM n/a n/a GLE2310
FA99585-1R LE039164.D 1 11/04/22 KM n/a n/a GLE2310
The QC reported here applies to the following samples:Method: MADEP VPH REV 2.1
LA84796-1
FA99585-1R DUP
CAS No.Compound ug/kg Q ug/kg Q RPD Limits
C5- C8 Aliphatics (Unadj.)15300 14700 4 50
C9- C12 Aliphatics (Unadj.)284000 282000 E 1 50
C9- C10 Aromatics (Unadj.)119000 118000 E 1 50
CAS No.Surrogate Recoveries DUP FA99585-1R Limits
615-59-8 2,5-Dibromotoluene 593%* a 592%* a 70-130%
615-59-8 2,5-Dibromotoluene 294%* a 292%* a 70-130%
(a) Outside control limits due to matrix interference. Confirmed by duplicate analysis.
* = Outside of Control Limits.
26 of 26
LA8479666.3.1
02/24/23
Technical Report for
Atlas
Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
SGS Job Number: LA87959
Sampling Date: 02/14/23
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
Kesavalu Bagawandoss
General Manager
Scott, LA 02/24/23
e-Hardcopy 2.0
Automated Report
57
SGS is the sole authority for authorizing edits or modifications to this document.
Unauthorized modification of this report is strictly prohibited.
Review standard terms at: http://www.sgs.com/en/terms-and-conditions
The results set forth herein are provided by SGS North America Inc.
Please share your ideas about
how we can serve you better at:
[e-mail]
1 of 57
LA87959
Table of Contents
-1-
Sections:
Section 1: Sample Summary ...................................................................................................3
Section 2: Summary of Hits ....................................................................................................4
Section 3: Sample Results ........................................................................................................5
3.1: LA87959-1: MW-2 .......................................................................................................6
3.2: LA87959-2: MW-3 .......................................................................................................12
3.3: LA87959-3: MW-4 .......................................................................................................18
Section 4: Misc. Forms ............................................................................................................24
4.1: Chain of Custody ...........................................................................................................25
Section 5: MS Volatiles - QC Data Summaries .....................................................................28
5.1: Method Blank Summary ................................................................................................29
5.2: Blank Spike/Blank Spike Duplicate Summary ..............................................................33
5.3: Matrix Spike/Matrix Spike Duplicate Summary ...........................................................37
Section 6: GC Volatiles - QC Data Summaries .....................................................................41
6.1: Method Blank Summary ................................................................................................42
6.2: Blank Spike/Blank Spike Duplicate Summary ..............................................................44
6.3: Duplicate Summary .......................................................................................................46
Section 7: Metals Analysis - QC Data Summaries ................................................................47
7.1: Prep QC MP25804: Pb ..................................................................................................48 12345672 of 57
LA87959
SGS North America Inc.
Sample Summary
Atlas
Job No:LA87959
Circle K#2723476, 3302 S. Holden Road, Greensboro, 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
LA87959-1 02/14/23 09:55 ADS 02/16/23 AQ Ground Water MW-2
LA87959-2 02/14/23 10:20 ADS 02/16/23 AQ Ground Water MW-3
LA87959-3 02/14/23 10:50 ADS 02/16/23 AQ Ground Water MW-4
3 of 57
LA879591
Summary of Hits Page 1 of 1
Job Number:LA87959
Account:Atlas
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Collected:02/14/23
Lab Sample ID Client Sample ID Result/
Analyte Qual RL MDL Units Method
LA87959-1 MW-2
Methyl Chloride 0.076 J 0.50 0.066 ug/l SM 6200B
Lead 2.9 1.0 0.72 ug/l SW846 6020B
LA87959-2 MW-3
Acetone 1.2 J 10 1.2 ug/l SM 6200B
Benzene 0.31 J 0.50 0.27 ug/l SM 6200B
sec-Butylbenzene 0.29 J 0.50 0.14 ug/l SM 6200B
Di-Isopropyl Ether 17.4 0.50 0.073 ug/l SM 6200B
Isopropylbenzene 0.24 J 0.50 0.13 ug/l SM 6200B
p-Isopropyltoluene 0.16 J 0.50 0.13 ug/l SM 6200B
Methyl Tert Butyl Ether 18.2 0.50 0.068 ug/l SM 6200B
Tert-Amyl Methyl Ether 2.9 1.0 0.084 ug/l SM 6200B
C5- C8 Aliphatics (Unadj.)91.5 J 100 50 ug/l MADEP VPH REV 2.1
Lead 1.1 1.0 0.72 ug/l SW846 6020B
LA87959-3 MW-4
Acetone 16.7 10 1.2 ug/l SM 6200B
Benzene 18.5 0.50 0.27 ug/l SM 6200B
n-Butylbenzene 0.21 J 0.50 0.092 ug/l SM 6200B
sec-Butylbenzene 0.30 J 0.50 0.14 ug/l SM 6200B
Di-Isopropyl Ether 0.28 J 0.50 0.073 ug/l SM 6200B
Ethylbenzene 1.4 0.50 0.20 ug/l SM 6200B
2-Hexanone 0.63 J 1.0 0.42 ug/l SM 6200B
Isopropylbenzene 1.8 0.50 0.13 ug/l SM 6200B
p-Isopropyltoluene 0.18 J 0.50 0.13 ug/l SM 6200B
4-Methyl-2-pentanone 0.51 0.50 0.24 ug/l SM 6200B
Naphthalene 2.6 0.50 0.10 ug/l SM 6200B
n-Propylbenzene 1.3 0.50 0.22 ug/l SM 6200B
Styrene 0.13 J 0.50 0.13 ug/l SM 6200B
Toluene 1.8 0.50 0.29 ug/l SM 6200B
1,2,4-Trimethylbenzene 13.9 0.50 0.15 ug/l SM 6200B
1,3,5-Trimethylbenzene 2.6 0.50 0.16 ug/l SM 6200B
Vinyl Acetate 0.25 J 0.50 0.069 ug/l SM 6200B
m,p-Xylene 41.5 1.0 0.34 ug/l SM 6200B
o-Xylene 2.9 0.50 0.15 ug/l SM 6200B
Xylene (total)44.4 0.50 0.16 ug/l SM 6200B
C5- C8 Aliphatics (Unadj.)297 100 50 ug/l MADEP VPH REV 2.1
C9- C12 Aliphatics (Unadj.)190 100 50 ug/l MADEP VPH REV 2.1
C9- C10 Aromatics (Unadj.)70.6 J 100 20 ug/l MADEP VPH REV 2.1
Lead 1.9 1.0 0.72 ug/l SW846 6020B
4 of 57
LA879592
SGS North America Inc.
Sample Results
Report of Analysis
Scott, LA
Section 3
5 of 57
LA879593
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:MW-2
Lab Sample ID:LA87959-1 Date Sampled:02/14/23
Matrix:AQ - Ground Water Date Received:02/16/23
Method:SM 6200B Percent Solids:n/a
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 1Q01463821.D 1 02/21/23 21:19 MB n/a n/a V1Q3231
Run #2 1Q01463753.D 1 02/18/23 00:53 MB n/a n/a V1Q3230
Purge Volume
Run #1 25.0 ml
Run #2 25.0 ml
VOA Special List
CAS No.Compound Result RL MDL Units Q
67-64-1 Acetone ND 10 1.2 ug/l
71-43-2 Benzene ND 0.50 0.27 ug/l
108-86-1 Bromobenzene ND 0.50 0.18 ug/l
74-97-5 Bromochloromethane ND 0.50 0.12 ug/l
75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l
75-25-2 Bromoform ND 0.50 0.10 ug/l
104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l
135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l
98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l
56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l
108-90-7 Chlorobenzene ND 0.50 0.16 ug/l
75-00-3 Chloroethane ND 0.50 0.055 ug/l
67-66-3 Chloroform ND 0.50 0.094 ug/l
95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l
106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l
124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l
106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l
75-71-8 Dichlorodifluoromethane ND a 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
6 of 57
LA8795933.1
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:MW-2
Lab Sample ID:LA87959-1 Date Sampled:02/14/23
Matrix:AQ - Ground Water Date Received:02/16/23
Method:SM 6200B Percent Solids:n/a
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
VOA Special List
CAS No.Compound Result RL MDL Units Q
10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l
108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l
64-17-5 Ethyl Alcohol ND 50 8.4 ug/l
100-41-4 Ethylbenzene ND 0.50 0.20 ug/l
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 0.076 0.50 0.066 ug/l J
74-95-3 Methylene Bromide ND 0.50 0.11 ug/l
75-09-2 Methylene Chloride ND 0.50 0.080 ug/l
78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l
108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l
1634-04-4 Methyl Tert Butyl Ether 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 a 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
7 of 57
LA8795933.1
SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:MW-2
Lab Sample ID:LA87959-1 Date Sampled:02/14/23
Matrix:AQ - Ground Water Date Received:02/16/23
Method:SM 6200B Percent Solids:n/a
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, 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 102%109%70-130%
2037-26-5 Toluene-D8 102%105%70-130%
460-00-4 4-Bromofluorobenzene 102%104%70-130%
(a) Result is from Run# 2
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
8 of 57
LA8795933.1
SGS North America Inc.
Report of Analysis Page 1 of 1
Client Sample ID:MW-2
Lab Sample ID:LA87959-1 Date Sampled:02/14/23
Matrix:AQ - Ground Water Date Received:02/16/23
Method:EPA 504.1 EPA 504 Percent Solids:n/a
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 LI137744.D 1 02/23/23 19:31 JT 02/23/23 14:00 OP22275 GLI1229
Run #2
Initial Volume Final Volume
Run #1 33.1 ml 2.0 ml
Run #2
CAS No.Compound Result RL MDL Units Q
106-93-4 1,2-Dibromoethane ND 0.021 0.0040 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
348-51-6 1-Chloro-2-fluorobenzene 104%70-130%
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
9 of 57
LA8795933.1
SGS North America Inc.
Report of Analysis Page 1 of 1
Client Sample ID:MW-2
Lab Sample ID:LA87959-1 Date Sampled:02/14/23
Matrix:AQ - Ground Water Date Received:02/16/23
Method:MADEP VPH REV 2.1 Percent Solids:n/a
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 LE040586.D 1 02/21/23 15:16 MB n/a n/a GLE2379
Run #2
Purge Volume
Run #1 5.0 ml
Run #2
MA VPH list
CAS No.Compound Result RL MDL Units Q
C5- C8 Aliphatics (Unadj.)ND 100 50 ug/l
C9- C12 Aliphatics (Unadj.)ND 100 50 ug/l
C9- C10 Aromatics (Unadj.)ND 100 20 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
615-59-8 2,5-Dibromotoluene 97%70-130%
615-59-8 2,5-Dibromotoluene 91%70-130%
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
10 of 57
LA8795933.1
SGS North America Inc.
Report of Analysis Page 1 of 1
Client Sample ID:MW-2
Lab Sample ID:LA87959-1 Date Sampled:02/14/23
Matrix:AQ - Ground Water Date Received:02/16/23
Percent Solids:n/a
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Total Metals Analysis
Analyte Result RL MDL Units DF Prep Analyzed By Method Prep Method
Lead 2.9 1.0 0.72 ug/l 1 02/17/23 02/21/23 AG SW846 6020B 1 SW846 3010A 2
(1) Instrument QC Batch: MA25437
(2) Prep QC Batch: MP25804
RL = Reporting Limit U = Indicates a result < MDL
MDL = Method Detection Limit J = Indicates a result >= MDL but < RL
11 of 57
LA8795933.1
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:MW-3
Lab Sample ID:LA87959-2 Date Sampled:02/14/23
Matrix:AQ - Ground Water Date Received:02/16/23
Method:SM 6200B Percent Solids:n/a
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 1Q01463822.D 1 02/21/23 21:48 MB n/a n/a V1Q3231
Run #2 1Q01463754.D 1 02/18/23 01:22 MB n/a n/a V1Q3230
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 1.2 10 1.2 ug/l J
71-43-2 Benzene 0.31 0.50 0.27 ug/l J
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 0.29 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 ND a 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
12 of 57
LA8795933.2
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:MW-3
Lab Sample ID:LA87959-2 Date Sampled:02/14/23
Matrix:AQ - Ground Water Date Received:02/16/23
Method:SM 6200B Percent Solids:n/a
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, 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 17.4 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
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 0.24 0.50 0.13 ug/l J
99-87-6 p-Isopropyltoluene 0.16 0.50 0.13 ug/l J
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 18.2 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 2.9 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 a 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
13 of 57
LA8795933.2
SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:MW-3
Lab Sample ID:LA87959-2 Date Sampled:02/14/23
Matrix:AQ - Ground Water Date Received:02/16/23
Method:SM 6200B Percent Solids:n/a
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, 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 100%108%70-130%
2037-26-5 Toluene-D8 103%107%70-130%
460-00-4 4-Bromofluorobenzene 101%104%70-130%
(a) Result is from Run# 2
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
14 of 57
LA8795933.2
SGS North America Inc.
Report of Analysis Page 1 of 1
Client Sample ID:MW-3
Lab Sample ID:LA87959-2 Date Sampled:02/14/23
Matrix:AQ - Ground Water Date Received:02/16/23
Method:EPA 504.1 EPA 504 Percent Solids:n/a
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 LI137745.D 1 02/23/23 19:49 JT 02/23/23 14:00 OP22275 GLI1229
Run #2
Initial Volume Final Volume
Run #1 36.2 ml 2.0 ml
Run #2
CAS No.Compound Result RL MDL Units Q
106-93-4 1,2-Dibromoethane ND 0.019 0.0037 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
348-51-6 1-Chloro-2-fluorobenzene 105%70-130%
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
15 of 57
LA8795933.2
SGS North America Inc.
Report of Analysis Page 1 of 1
Client Sample ID:MW-3
Lab Sample ID:LA87959-2 Date Sampled:02/14/23
Matrix:AQ - Ground Water Date Received:02/16/23
Method:MADEP VPH REV 2.1 Percent Solids:n/a
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 LE040587.D 1 02/21/23 15:47 MB n/a n/a GLE2379
Run #2
Purge Volume
Run #1 5.0 ml
Run #2
MA VPH list
CAS No.Compound Result RL MDL Units Q
C5- C8 Aliphatics (Unadj.)91.5 100 50 ug/l J
C9- C12 Aliphatics (Unadj.)ND 100 50 ug/l
C9- C10 Aromatics (Unadj.)ND 100 20 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
615-59-8 2,5-Dibromotoluene 92%70-130%
615-59-8 2,5-Dibromotoluene 88%70-130%
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
16 of 57
LA8795933.2
SGS North America Inc.
Report of Analysis Page 1 of 1
Client Sample ID:MW-3
Lab Sample ID:LA87959-2 Date Sampled:02/14/23
Matrix:AQ - Ground Water Date Received:02/16/23
Percent Solids:n/a
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Total Metals Analysis
Analyte Result RL MDL Units DF Prep Analyzed By Method Prep Method
Lead 1.1 1.0 0.72 ug/l 1 02/17/23 02/21/23 AG SW846 6020B 1 SW846 3010A 2
(1) Instrument QC Batch: MA25437
(2) Prep QC Batch: MP25804
RL = Reporting Limit U = Indicates a result < MDL
MDL = Method Detection Limit J = Indicates a result >= MDL but < RL
17 of 57
LA8795933.2
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:MW-4
Lab Sample ID:LA87959-3 Date Sampled:02/14/23
Matrix:AQ - Ground Water Date Received:02/16/23
Method:SM 6200B Percent Solids:n/a
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 1Q01463823.D 1 02/21/23 22:16 MB n/a n/a V1Q3231
Run #2 1Q01463755.D 1 02/18/23 01:51 MB n/a n/a V1Q3230
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 16.7 10 1.2 ug/l
71-43-2 Benzene 18.5 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 0.30 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 ND a 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
18 of 57
LA8795933.3
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:MW-4
Lab Sample ID:LA87959-3 Date Sampled:02/14/23
Matrix:AQ - Ground Water Date Received:02/16/23
Method:SM 6200B Percent Solids:n/a
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, 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 0.28 0.50 0.073 ug/l J
64-17-5 Ethyl Alcohol ND 50 8.4 ug/l
100-41-4 Ethylbenzene 1.4 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 0.63 1.0 0.42 ug/l J
87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l
98-82-8 Isopropylbenzene 1.8 0.50 0.13 ug/l
99-87-6 p-Isopropyltoluene 0.18 0.50 0.13 ug/l J
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 0.51 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 1.3 0.50 0.22 ug/l
100-42-5 Styrene 0.13 0.50 0.13 ug/l J
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 1.8 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 a 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 13.9 0.50 0.15 ug/l
108-67-8 1,3,5-Trimethylbenzene 2.6 0.50 0.16 ug/l
108-05-4 Vinyl Acetate 0.25 0.50 0.069 ug/l J
75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l
m,p-Xylene 41.5 1.0 0.34 ug/l
95-47-6 o-Xylene 2.9 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
19 of 57
LA8795933.3
SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:MW-4
Lab Sample ID:LA87959-3 Date Sampled:02/14/23
Matrix:AQ - Ground Water Date Received:02/16/23
Method:SM 6200B Percent Solids:n/a
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
VOA Special List
CAS No.Compound Result RL MDL Units Q
1330-20-7 Xylene (total)44.4 0.50 0.16 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 94%101%70-130%
2037-26-5 Toluene-D8 103%107%70-130%
460-00-4 4-Bromofluorobenzene 103%107%70-130%
(a) Result is from Run# 2
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
20 of 57
LA8795933.3
SGS North America Inc.
Report of Analysis Page 1 of 1
Client Sample ID:MW-4
Lab Sample ID:LA87959-3 Date Sampled:02/14/23
Matrix:AQ - Ground Water Date Received:02/16/23
Method:EPA 504.1 EPA 504 Percent Solids:n/a
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 LI137746.D 1 02/23/23 20:07 JT 02/23/23 14:00 OP22275 GLI1229
Run #2
Initial Volume Final Volume
Run #1 33.6 ml 2.0 ml
Run #2
CAS No.Compound Result RL MDL Units Q
106-93-4 1,2-Dibromoethane ND 0.021 0.0040 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
348-51-6 1-Chloro-2-fluorobenzene 93%70-130%
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
21 of 57
LA8795933.3
SGS North America Inc.
Report of Analysis Page 1 of 1
Client Sample ID:MW-4
Lab Sample ID:LA87959-3 Date Sampled:02/14/23
Matrix:AQ - Ground Water Date Received:02/16/23
Method:MADEP VPH REV 2.1 Percent Solids:n/a
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 LE040590.D 1 02/21/23 17:20 MB n/a n/a GLE2379
Run #2
Purge Volume
Run #1 5.0 ml
Run #2
MA VPH list
CAS No.Compound Result RL MDL Units Q
C5- C8 Aliphatics (Unadj.)297 100 50 ug/l
C9- C12 Aliphatics (Unadj.)190 100 50 ug/l
C9- C10 Aromatics (Unadj.)70.6 100 20 ug/l J
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
615-59-8 2,5-Dibromotoluene 97%70-130%
615-59-8 2,5-Dibromotoluene 92%70-130%
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
22 of 57
LA8795933.3
SGS North America Inc.
Report of Analysis Page 1 of 1
Client Sample ID:MW-4
Lab Sample ID:LA87959-3 Date Sampled:02/14/23
Matrix:AQ - Ground Water Date Received:02/16/23
Percent Solids:n/a
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Total Metals Analysis
Analyte Result RL MDL Units DF Prep Analyzed By Method Prep Method
Lead 1.9 1.0 0.72 ug/l 1 02/17/23 02/21/23 AG SW846 6020B 1 SW846 3010A 2
(1) Instrument QC Batch: MA25437
(2) Prep QC Batch: MP25804
RL = Reporting Limit U = Indicates a result < MDL
MDL = Method Detection Limit J = Indicates a result >= MDL but < RL
23 of 57
LA8795933.3
SGS North America Inc.
Misc. Forms
Custody Documents and Other Forms
Includes the following where applicable:
• Chain of Custody
Scott, LA
Section 4
24 of 57
LA879594
LA87959: Chain of Custody
Page 1 of 3
25 of 57
LA8795944.1
LA87959: Chain of Custody
Page 2 of 3
26 of 57
LA8795944.1
SGS Sample Receipt Summary
Job Number:LA87959 Client:ATC
Date / Time Received:2/16/2023 10:15:00 AM Delivery Method:FedEx
Project:CIRCLE K 3476
4. No. Coolers:1
Airbill #'s:5707 9050 7874
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: (2.8/2.8); IR001
LA87959: Chain of Custody
Page 3 of 3
27 of 57
LA8795944.1
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
28 of 57
LA879595
Method Blank Summary Page 1 of 1
Job Number:LA87959
Account:ATCNCR Atlas
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V1Q3230-MB1 1Q01463751.D 1 02/17/23 MB n/a n/a V1Q3230
The QC reported here applies to the following samples:Method: SM 6200B
LA87959-1, LA87959-2, LA87959-3
CAS No.Compound Result RL MDL Units Q
75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l
75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l
CAS No.Surrogate Recoveries Limits
17060-07-0 1,2-Dichloroethane-D4 108%70-130%
2037-26-5 Toluene-D8 104%70-130%
460-00-4 4-Bromofluorobenzene 105%70-130%
29 of 57
LA8795955.1.1
Method Blank Summary Page 1 of 3
Job Number:LA87959
Account:ATCNCR Atlas
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V1Q3231-MB1 1Q01463819.D 1 02/21/23 MB n/a n/a V1Q3231
The QC reported here applies to the following samples:Method: SM 6200B
LA87959-1, LA87959-2, LA87959-3
CAS No.Compound Result RL MDL Units Q
67-64-1 Acetone 1.7 10 1.2 ug/l J
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
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
637-92-3 Ethyl Tert-Butyl Ether ND 0.50 0.056 ug/l
30 of 57
LA8795955.1.2
Method Blank Summary Page 2 of 3
Job Number:LA87959
Account:ATCNCR Atlas
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V1Q3231-MB1 1Q01463819.D 1 02/21/23 MB n/a n/a V1Q3231
The QC reported here applies to the following samples:Method: SM 6200B
LA87959-1, LA87959-2, LA87959-3
CAS No.Compound Result RL MDL Units Q
591-78-6 2-Hexanone ND 1.0 0.42 ug/l
87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l
98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l
99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l
74-83-9 Methyl Bromide ND 0.50 0.23 ug/l
74-87-3 Methyl Chloride 0.096 0.50 0.066 ug/l J
74-95-3 Methylene Bromide ND 0.50 0.11 ug/l
75-09-2 Methylene Chloride ND 0.50 0.080 ug/l
78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l
108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l
1634-04-4 Methyl Tert Butyl Ether 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
96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l
95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l
108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l
108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l
75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l
m,p-Xylene ND 1.0 0.34 ug/l
95-47-6 o-Xylene ND 0.50 0.15 ug/l
1330-20-7 Xylene (total)ND 0.50 0.16 ug/l
31 of 57
LA8795955.1.2
Method Blank Summary Page 3 of 3
Job Number:LA87959
Account:ATCNCR Atlas
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V1Q3231-MB1 1Q01463819.D 1 02/21/23 MB n/a n/a V1Q3231
The QC reported here applies to the following samples:Method: SM 6200B
LA87959-1, LA87959-2, LA87959-3
CAS No.Surrogate Recoveries Limits
17060-07-0 1,2-Dichloroethane-D4 98%70-130%
2037-26-5 Toluene-D8 101%70-130%
460-00-4 4-Bromofluorobenzene 103%70-130%
32 of 57
LA8795955.1.2
Blank Spike/Blank Spike Duplicate Summary Page 1 of 1
Job Number:LA87959
Account:ATCNCR Atlas
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V1Q3230-BS1 1Q01463748.D 1 02/17/23 MB n/a n/a V1Q3230
V1Q3230-BSD1 1Q01463749.D 1 02/17/23 MB n/a n/a V1Q3230
The QC reported here applies to the following samples:Method: SM 6200B
LA87959-1, LA87959-2, LA87959-3
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD
75-71-8 Dichlorodifluoromethane 20 21.0 105 20.6 103 2 60-140/30
75-69-4 Trichlorofluoromethane 20 20.8 104 20.2 101 3 60-140/30
CAS No.Surrogate Recoveries BSP BSD Limits
17060-07-0 1,2-Dichloroethane-D4 89%90%70-130%
2037-26-5 Toluene-D8 101%101%70-130%
460-00-4 4-Bromofluorobenzene 101%102%70-130%
* = Outside of Control Limits.
33 of 57
LA8795955.2.1
Blank Spike/Blank Spike Duplicate Summary Page 1 of 3
Job Number:LA87959
Account:ATCNCR Atlas
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V1Q3231-BS1 1Q01463816.D 1 02/21/23 MB n/a n/a V1Q3231
V1Q3231-BSD1 1Q01463817.D 1 02/21/23 MB n/a n/a V1Q3231
The QC reported here applies to the following samples:Method: SM 6200B
LA87959-1, LA87959-2, LA87959-3
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD
67-64-1 Acetone 50 44.2 88 43.8 88 1 70-130/30
71-43-2 Benzene 20 17.8 89 17.9 90 1 70-130/30
108-86-1 Bromobenzene 20 21.4 107 21.6 108 1 70-130/30
74-97-5 Bromochloromethane 20 17.1 86 17.2 86 1 70-130/30
75-27-4 Bromodichloromethane 20 22.2 111 22.3 112 0 70-130/30
75-25-2 Bromoform 20 19.3 97 19.3 97 0 70-130/30
104-51-8 n-Butylbenzene 20 19.0 95 19.0 95 0 70-130/30
135-98-8 sec-Butylbenzene 20 19.3 97 19.3 97 0 70-130/30
98-06-6 tert-Butylbenzene 20 18.8 94 18.9 95 1 70-130/30
56-23-5 Carbon Tetrachloride 20 18.6 93 19.2 96 3 70-130/30
108-90-7 Chlorobenzene 20 20.8 104 20.9 105 0 70-130/30
75-00-3 Chloroethane 20 18.6 93 18.9 95 2 60-140/30
67-66-3 Chloroform 20 20.2 101 16.9 85 18 70-130/30
95-49-8 o-Chlorotoluene 20 19.5 98 19.6 98 1 70-130/30
106-43-4 p-Chlorotoluene 20 19.6 98 19.7 99 1 70-130/30
124-48-1 Dibromochloromethane 20 23.7 119 24.1 121 2 70-130/30
96-12-8 1,2-Dibromo-3-chloropropane 20 18.6 93 18.6 93 0 70-130/30
106-93-4 1,2-Dibromoethane 20 22.3 112 22.6 113 1 70-130/30
541-73-1 m-Dichlorobenzene 20 21.3 107 21.2 106 0 70-130/30
95-50-1 o-Dichlorobenzene 20 20.9 105 21.0 105 0 70-130/30
106-46-7 p-Dichlorobenzene 20 20.3 102 20.4 102 0 70-130/30
75-34-3 1,1-Dichloroethane 20 21.8 109 22.1 111 1 70-130/30
107-06-2 1,2-Dichloroethane 20 18.9 95 19.0 95 1 70-130/30
75-35-4 1,1-Dichloroethylene 20 19.1 96 19.2 96 1 70-130/30
156-59-2 cis-1,2-Dichloroethylene 20 21.4 107 21.9 110 2 70-130/30
156-60-5 trans-1,2-Dichloroethylene 20 19.4 97 19.5 98 1 70-130/30
78-87-5 1,2-Dichloropropane 20 21.3 107 21.4 107 0 70-130/30
142-28-9 1,3-Dichloropropane 20 20.9 105 21.1 106 1 70-130/30
594-20-7 2,2-Dichloropropane 20 19.5 98 19.7 99 1 70-130/30
563-58-6 1,1-Dichloropropene 20 19.2 96 19.6 98 2 70-130/30
10061-01-5 cis-1,3-Dichloropropene 20 19.8 99 20.1 101 2 70-130/30
10061-02-6 trans-1,3-Dichloropropene 20 19.5 98 19.9 100 2 70-130/30
108-20-3 Di-Isopropyl Ether 20 21.2 106 21.4 107 1 70-130/30
64-17-5 Ethyl Alcohol 400 395 99 393 98 1 70-130/30
100-41-4 Ethylbenzene 20 21.9 110 22.1 111 1 70-130/30
637-92-3 Ethyl Tert-Butyl Ether 20 23.3 117 23.5 118 1 70-130/30
* = Outside of Control Limits.
34 of 57
LA8795955.2.2
Blank Spike/Blank Spike Duplicate Summary Page 2 of 3
Job Number:LA87959
Account:ATCNCR Atlas
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V1Q3231-BS1 1Q01463816.D 1 02/21/23 MB n/a n/a V1Q3231
V1Q3231-BSD1 1Q01463817.D 1 02/21/23 MB n/a n/a V1Q3231
The QC reported here applies to the following samples:Method: SM 6200B
LA87959-1, LA87959-2, LA87959-3
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD
591-78-6 2-Hexanone 50 60.8 122 61.0 122 0 70-130/30
87-68-3 Hexachlorobutadiene 20 19.0 95 19.0 95 0 70-130/30
98-82-8 Isopropylbenzene 20 19.6 98 19.7 99 1 70-130/30
99-87-6 p-Isopropyltoluene 20 19.0 95 19.0 95 0 70-130/30
74-83-9 Methyl Bromide 20 17.9 90 18.0 90 1 60-140/30
74-87-3 Methyl Chloride 20 20.7 104 21.4 107 3 60-140/30
74-95-3 Methylene Bromide 20 19.9 100 20.0 100 1 70-130/30
75-09-2 Methylene Chloride 20 18.6 93 18.7 94 1 70-130/30
78-93-3 Methyl Ethyl Ketone 50 48.4 97 49.5 99 2 70-130/30
108-10-1 4-Methyl-2-pentanone 50 54.1 108 54.4 109 1 70-130/30
1634-04-4 Methyl Tert Butyl Ether 20 22.7 114 22.9 115 1 70-130/30
91-20-3 Naphthalene 20 19.7 99 19.9 100 1 70-130/30
103-65-1 n-Propylbenzene 20 19.4 97 19.4 97 0 70-130/30
100-42-5 Styrene 20 21.9 110 22.0 110 0 70-130/30
75-85-4 Tert-Amyl Alcohol 200 212 106 211 106 0 50-150/30 a
994-05-8 Tert-Amyl Methyl Ether 20 24.6 123 24.6 123 0 70-130/30
75-65-0 Tert-Butyl Alcohol 100 111 111 114 114 3 70-130/30
762-75-4 tert-Butyl Formate 20 23.3 117 23.5 118 1 50-150/30 a
630-20-6 1,1,1,2-Tetrachloroethane 20 19.5 98 19.8 99 2 70-130/30
79-34-5 1,1,2,2-Tetrachloroethane 20 22.2 111 22.0 110 1 70-130/30
127-18-4 Tetrachloroethylene 20 19.5 98 20.0 100 3 70-130/30
108-88-3 Toluene 20 19.6 98 19.7 99 1 70-130/30
87-61-6 1,2,3-Trichlorobenzene 20 22.5 113 22.5 113 0 70-130/30
120-82-1 1,2,4-Trichlorobenzene 20 19.0 95 19.1 96 1 70-130/30
71-55-6 1,1,1-Trichloroethane 20 19.1 96 19.2 96 1 70-130/30
79-00-5 1,1,2-Trichloroethane 20 21.0 105 21.2 106 1 70-130/30
79-01-6 Trichloroethylene 20 19.6 98 19.7 99 1 70-130/30
96-18-4 1,2,3-Trichloropropane 20 21.5 108 21.8 109 1 70-130/30
95-63-6 1,2,4-Trimethylbenzene 20 19.1 96 19.2 96 1 70-130/30
108-67-8 1,3,5-Trimethylbenzene 20 18.9 95 19.0 95 1 70-130/30
108-05-4 Vinyl Acetate 20 19.7 99 19.8 99 1 70-130/30
75-01-4 Vinyl Chloride 20 19.7 99 19.7 99 0 60-140/30
m,p-Xylene 40 44.8 112 44.9 112 0 70-130/30
95-47-6 o-Xylene 20 22.4 112 22.5 113 0 70-130/30
1330-20-7 Xylene (total)60 67.2 112 67.5 113 0 70-130/30
* = Outside of Control Limits.
35 of 57
LA8795955.2.2
Blank Spike/Blank Spike Duplicate Summary Page 3 of 3
Job Number:LA87959
Account:ATCNCR Atlas
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V1Q3231-BS1 1Q01463816.D 1 02/21/23 MB n/a n/a V1Q3231
V1Q3231-BSD1 1Q01463817.D 1 02/21/23 MB n/a n/a V1Q3231
The QC reported here applies to the following samples:Method: SM 6200B
LA87959-1, LA87959-2, LA87959-3
CAS No.Surrogate Recoveries BSP BSD Limits
17060-07-0 1,2-Dichloroethane-D4 85%86%70-130%
2037-26-5 Toluene-D8 96%96%70-130%
460-00-4 4-Bromofluorobenzene 98%97%70-130%
(a) Advisory control limits.
* = Outside of Control Limits.
36 of 57
LA8795955.2.2
Matrix Spike/Matrix Spike Duplicate Summary Page 1 of 1
Job Number:LA87959
Account:ATCNCR Atlas
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA87959-3MS 1Q01463756.D 20 02/18/23 MB n/a n/a V1Q3230
LA87959-3MSD 1Q01463757.D 20 02/18/23 MB n/a n/a V1Q3230
LA87959-3 1Q01463755.D 1 02/18/23 MB n/a n/a V1Q3230
The QC reported here applies to the following samples:Method: SM 6200B
LA87959-1, LA87959-2, LA87959-3
LA87959-3 Spike MS MS Spike MSD MSD Limits
CAS No.Compound ug/l Q ug/l ug/l %ug/l ug/l %RPD Rec/RPD
75-71-8 Dichlorodifluoromethane ND 400 128 32* a 400 129 32* a 1 60-140/20
75-69-4 Trichlorofluoromethane ND 400 191 48* a 400 187 47* a 2 60-140/20
CAS No.Surrogate Recoveries MS MSD LA87959-3 Limits
17060-07-0 1,2-Dichloroethane-D4 95%91%101%70-130%
2037-26-5 Toluene-D8 104%104%107%70-130%
460-00-4 4-Bromofluorobenzene 102%103%107%70-130%
(a) Outside control limits due to matrix interference. Blank Spike meets acceptance criteria.
* = Outside of Control Limits.
37 of 57
LA8795955.3.1
Matrix Spike/Matrix Spike Duplicate Summary Page 1 of 3
Job Number:LA87959
Account:ATCNCR Atlas
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA87939-1AMS 1Q01463850.D 500 02/22/23 MB n/a n/a V1Q3231
LA87939-1AMSD 1Q01463851.D 500 02/22/23 MB n/a n/a V1Q3231
LA87939-1A a 1Q01463825.D 100 02/21/23 MB n/a n/a V1Q3231
The QC reported here applies to the following samples:Method: SM 6200B
LA87959-1, LA87959-2, LA87959-3
LA87939-1ASpike 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 25000 26900 108 25000 26100 104 3 70-130/20
71-43-2 Benzene ND 10000 9720 97 10000 9790 98 1 70-130/20
108-86-1 Bromobenzene ND 10000 9640 96 10000 9680 97 0 70-130/20
74-97-5 Bromochloromethane ND 10000 7450 75 10000 7340 73 1 70-130/20
75-27-4 Bromodichloromethane ND 10000 10600 106 10000 10700 107 1 70-130/20
75-25-2 Bromoform ND 10000 9880 99 10000 9740 97 1 70-130/20
104-51-8 n-Butylbenzene ND 10000 10400 104 10000 10500 105 1 70-130/20
135-98-8 sec-Butylbenzene ND 10000 9830 98 10000 9950 100 1 70-130/20
98-06-6 tert-Butylbenzene ND 10000 8830 88 10000 8940 89 1 70-130/20
56-23-5 Carbon Tetrachloride ND 10000 10500 105 10000 10700 107 2 70-130/20
108-90-7 Chlorobenzene 5230 10000 14100 89 10000 14200 90 1 70-130/20
75-00-3 Chloroethane ND 10000 10100 101 10000 9920 99 2 60-140/20
67-66-3 Chloroform ND 10000 11700 117 10000 11700 117 0 70-130/20
95-49-8 o-Chlorotoluene ND 10000 9660 97 10000 9700 97 0 70-130/20
106-43-4 p-Chlorotoluene ND 10000 9800 98 10000 9870 99 1 70-130/20
124-48-1 Dibromochloromethane ND 10000 11400 114 10000 11400 114 0 70-130/20
96-12-8 1,2-Dibromo-3-chloropropane ND 10000 9480 95 10000 9710 97 2 70-130/20
106-93-4 1,2-Dibromoethane ND 10000 10600 106 10000 10600 106 0 70-130/20
541-73-1 m-Dichlorobenzene ND 10000 9670 97 10000 9760 98 1 70-130/20
95-50-1 o-Dichlorobenzene ND 10000 9630 96 10000 9710 97 1 70-130/20
106-46-7 p-Dichlorobenzene ND 10000 9300 93 10000 9410 94 1 70-130/20
75-34-3 1,1-Dichloroethane ND 10000 9770 98 10000 9830 98 1 70-130/20
107-06-2 1,2-Dichloroethane ND 10000 9520 95 10000 9470 95 1 70-130/20
75-35-4 1,1-Dichloroethylene ND 10000 9730 97 10000 9610 96 1 70-130/20
156-59-2 cis-1,2-Dichloroethylene ND 10000 10100 101 10000 10200 102 1 70-130/20
156-60-5 trans-1,2-Dichloroethylene ND 10000 9650 97 10000 9830 98 2 70-130/20
78-87-5 1,2-Dichloropropane ND 10000 9960 100 10000 10000 100 0 70-130/20
142-28-9 1,3-Dichloropropane ND 10000 10000 100 10000 10000 100 0 70-130/20
594-20-7 2,2-Dichloropropane ND 10000 10300 103 10000 10600 106 3 70-130/20
563-58-6 1,1-Dichloropropene ND 10000 10000 100 10000 10100 101 1 70-130/20
10061-01-5 cis-1,3-Dichloropropene ND 10000 10200 102 10000 10400 104 2 70-130/20
10061-02-6 trans-1,3-Dichloropropene ND 10000 10000 100 10000 10100 101 1 70-130/20
108-20-3 Di-Isopropyl Ether ND 10000 10400 104 10000 10500 105 1 70-130/20
64-17-5 Ethyl Alcohol ND 200000 163000 82 200000 258000 129 45* b 70-130/20
100-41-4 Ethylbenzene ND 10000 9220 92 10000 9280 93 1 70-130/20
637-92-3 Ethyl Tert-Butyl Ether ND 10000 11000 110 10000 11100 111 1 70-130/20
* = Outside of Control Limits.
38 of 57
LA8795955.3.2
Matrix Spike/Matrix Spike Duplicate Summary Page 2 of 3
Job Number:LA87959
Account:ATCNCR Atlas
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA87939-1AMS 1Q01463850.D 500 02/22/23 MB n/a n/a V1Q3231
LA87939-1AMSD 1Q01463851.D 500 02/22/23 MB n/a n/a V1Q3231
LA87939-1A a 1Q01463825.D 100 02/21/23 MB n/a n/a V1Q3231
The QC reported here applies to the following samples:Method: SM 6200B
LA87959-1, LA87959-2, LA87959-3
LA87939-1ASpike MS MS Spike MSD MSD Limits
CAS No.Compound ug/l Q ug/l ug/l %ug/l ug/l %RPD Rec/RPD
591-78-6 2-Hexanone ND 25000 28000 112 25000 27600 110 1 70-130/20
87-68-3 Hexachlorobutadiene ND 10000 9610 96 10000 9850 99 2 70-130/20
98-82-8 Isopropylbenzene ND 10000 9990 100 10000 10000 100 0 70-130/20
99-87-6 p-Isopropyltoluene ND 10000 9930 99 10000 10000 100 1 70-130/20
74-83-9 Methyl Bromide ND 10000 12100 121 10000 12500 125 3 60-140/20
74-87-3 Methyl Chloride ND 10000 11300 113 10000 11800 118 4 60-140/20
74-95-3 Methylene Bromide ND 10000 10200 102 10000 10100 101 1 70-130/20
75-09-2 Methylene Chloride ND 10000 9800 98 10000 9800 98 0 70-130/20
78-93-3 Methyl Ethyl Ketone ND 25000 26500 106 25000 26400 106 0 70-130/20
108-10-1 4-Methyl-2-pentanone ND 25000 29500 118 25000 29300 117 1 70-130/20
1634-04-4 Methyl Tert Butyl Ether ND 10000 10900 109 10000 11000 110 1 70-130/20
91-20-3 Naphthalene ND 10000 10100 101 10000 10200 102 1 70-130/20
103-65-1 n-Propylbenzene ND 10000 9660 97 10000 9810 98 2 70-130/20
100-42-5 Styrene ND 10000 10900 109 10000 10800 108 1 70-130/20
75-85-4 Tert-Amyl Alcohol ND 100000 113000 113 100000 116000 116 3 50-150/30 c
994-05-8 Tert-Amyl Methyl Ether ND 10000 11000 110 10000 11100 111 1 70-130/20
75-65-0 Tert-Butyl Alcohol ND 50000 64000 128 50000 65900 132* b 3 70-130/20
762-75-4 tert-Butyl Formate ND 10000 11000 110 10000 11100 111 1 50-150/30 c
630-20-6 1,1,1,2-Tetrachloroethane ND 10000 10900 109 10000 10800 108 1 70-130/20
79-34-5 1,1,2,2-Tetrachloroethane ND 10000 3800 38* b 10000 3570 36* b 6 70-130/20
127-18-4 Tetrachloroethylene ND 10000 16400 164* b 10000 16600 166* b 1 70-130/20
108-88-3 Toluene ND 10000 9120 91 10000 9240 92 1 70-130/20
87-61-6 1,2,3-Trichlorobenzene ND 10000 10500 105 10000 10600 106 1 70-130/20
120-82-1 1,2,4-Trichlorobenzene ND 10000 10100 101 10000 10200 102 1 70-130/20
71-55-6 1,1,1-Trichloroethane ND 10000 10500 105 10000 10700 107 2 70-130/20
79-00-5 1,1,2-Trichloroethane ND 10000 9940 99 10000 9880 99 1 70-130/20
79-01-6 Trichloroethylene ND 10000 15100 151* b 10000 15500 155* b 3 70-130/20
96-18-4 1,2,3-Trichloropropane ND 10000 10300 103 10000 10300 103 0 70-130/20
95-63-6 1,2,4-Trimethylbenzene ND 10000 10100 101 10000 10200 102 1 70-130/20
108-67-8 1,3,5-Trimethylbenzene ND 10000 10300 103 10000 10500 105 2 70-130/20
108-05-4 Vinyl Acetate ND 10000 2250 23* b 10000 2130 21* b 5 70-130/20
75-01-4 Vinyl Chloride ND 10000 10500 105 10000 10300 103 2 60-140/20
m,p-Xylene ND 20000 19200 96 20000 19200 96 0 70-130/20
95-47-6 o-Xylene ND 10000 9740 97 10000 9830 98 1 70-130/20
1330-20-7 Xylene (total)ND 30000 28900 96 30000 29100 97 1 70-130/20
* = Outside of Control Limits.
39 of 57
LA8795955.3.2
Matrix Spike/Matrix Spike Duplicate Summary Page 3 of 3
Job Number:LA87959
Account:ATCNCR Atlas
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA87939-1AMS 1Q01463850.D 500 02/22/23 MB n/a n/a V1Q3231
LA87939-1AMSD 1Q01463851.D 500 02/22/23 MB n/a n/a V1Q3231
LA87939-1A a 1Q01463825.D 100 02/21/23 MB n/a n/a V1Q3231
The QC reported here applies to the following samples:Method: SM 6200B
LA87959-1, LA87959-2, LA87959-3
CAS No.Surrogate Recoveries MS MSD LA87939-1A Limits
17060-07-0 1,2-Dichloroethane-D4 89%91%102%70-130%
2037-26-5 Toluene-D8 100%100%103%70-130%
460-00-4 4-Bromofluorobenzene 97%97%93%70-130%
(a) Dilution required due to high concentration of non-target analytes.
(b) Outside control limits due to matrix interference. Blank Spike meets acceptance criteria.
(c) Advisory control limits.
* = Outside of Control Limits.
40 of 57
LA8795955.3.2
SGS North America Inc.
GC Volatiles
QC Data Summaries
Includes the following where applicable:
• Method Blank Summaries
• Blank Spike Summaries
• Matrix Spike and Duplicate Summaries
Scott, LA
Section 6
41 of 57
LA879596
Method Blank Summary Page 1 of 1
Job Number:LA87959
Account:ATCNCR Atlas
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
GLE2379-MB1 LE040585.D 1 02/21/23 MB n/a n/a GLE2379
The QC reported here applies to the following samples:Method: MADEP VPH REV 2.1
LA87959-1, LA87959-2, LA87959-3
CAS No.Compound Result RL MDL Units Q
C5- C8 Aliphatics (Unadj.)ND 100 50 ug/l
C9- C12 Aliphatics (Unadj.)ND 100 50 ug/l
C9- C10 Aromatics (Unadj.)ND 100 20 ug/l
CAS No.Surrogate Recoveries Limits
615-59-8 2,5-Dibromotoluene 93%70-130%
615-59-8 2,5-Dibromotoluene 88%70-130%
42 of 57
LA8795966.1.1
Method Blank Summary Page 1 of 1
Job Number:LA87959
Account:ATCNCR Atlas
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
OP22275-MB LI137769.D 1 02/24/23 JT 02/23/23 OP22275 GLI1229
The QC reported here applies to the following samples:Method: EPA 504.1
LA87959-1, LA87959-2, LA87959-3
CAS No.Compound Result RL MDL Units Q
106-93-4 1,2-Dibromoethane ND 0.020 0.0038 ug/l
CAS No.Surrogate Recoveries Limits
348-51-6 1-Chloro-2-fluorobenzene 111%70-130%
43 of 57
LA8795966.1.2
Blank Spike/Blank Spike Duplicate Summary Page 1 of 1
Job Number:LA87959
Account:ATCNCR Atlas
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
GLE2379-BS1 LE040588.D 1 02/21/23 MB n/a n/a GLE2379
GLE2379-BSD1 LE040589.D 1 02/21/23 MB n/a n/a GLE2379
The QC reported here applies to the following samples:Method: MADEP VPH REV 2.1
LA87959-1, LA87959-2, LA87959-3
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD
C5- C8 Aliphatics (Unadj.)120 125 104 127 106 2 70-130/25
C9- C12 Aliphatics (Unadj.)120 105 87 109 91 4 70-130/25
C9- C10 Aromatics (Unadj.)40 38.3 96 38.2 96 0 70-130/25
CAS No.Surrogate Recoveries BSP BSD Limits
615-59-8 2,5-Dibromotoluene 97%98%70-130%
615-59-8 2,5-Dibromotoluene 92%93%70-130%
* = Outside of Control Limits.
44 of 57
LA8795966.2.1
Blank Spike/Blank Spike Duplicate Summary Page 1 of 1
Job Number:LA87959
Account:ATCNCR Atlas
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
OP22275-BS LI137742.D 1 02/23/23 JT 02/23/23 OP22275 GLI1229
OP22275-BSD LI137743.D 1 02/23/23 JT 02/23/23 OP22275 GLI1229
The QC reported here applies to the following samples:Method: EPA 504.1
LA87959-1, LA87959-2, LA87959-3
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD
106-93-4 1,2-Dibromoethane 0.251 0.26 103 0.29 115 11 70-130/20
CAS No.Surrogate Recoveries BSP BSD Limits
348-51-6 1-Chloro-2-fluorobenzene 101%105%70-130%
* = Outside of Control Limits.
45 of 57
LA8795966.2.2
Duplicate Summary Page 1 of 1
Job Number:LA87959
Account:ATCNCR Atlas
Project:Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA87959-3DUP LE040591.D 1 02/21/23 MB n/a n/a GLE2379
LA87959-3 LE040590.D 1 02/21/23 MB n/a n/a GLE2379
The QC reported here applies to the following samples:Method: MADEP VPH REV 2.1
LA87959-1, LA87959-2, LA87959-3
LA87959-3 DUP
CAS No.Compound ug/l Q ug/l Q RPD Limits
C5- C8 Aliphatics (Unadj.)297 283 5 50
C9- C12 Aliphatics (Unadj.)190 179 6 50
C9- C10 Aromatics (Unadj.)70.6 J 67.2 J 5 50
CAS No.Surrogate Recoveries DUP LA87959-3 Limits
615-59-8 2,5-Dibromotoluene 95%97%70-130%
615-59-8 2,5-Dibromotoluene 90%92%70-130%
* = Outside of Control Limits.
46 of 57
LA8795966.3.1
SGS North America Inc.
Metals Analysis
QC Data Summaries
Includes the following where applicable:
• Method Blank Summaries
• Matrix Spike and Duplicate Summaries
• Blank Spike and Lab Control Sample Summaries
• Serial Dilution Summaries
Scott, LA
Section 7
47 of 57
LA879597
BLANK RESULTS SUMMARY
Part 2 - Method Blanks
Login Number: LA87959
Account: ATCNCR - Atlas
Project: Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
QC Batch ID: MP25804 Methods: SW846 6020B
Matrix Type: AQUEOUS Units: ug/l
Prep Date: 02/17/23
MB
Metal RL IDL MDL raw final
Aluminum 100 .14 49
Antimony 1.0 .0022 .79
Arsenic 1.0 .0079 .57
Barium 1.0 .0041 .63
Beryllium 1.0 .0035 .75
Boron 20 .43 6.3
Cadmium 0.50 .0016 .49
Calcium 200 4.3 110
Cerium 1.0 .0015 .76
Chromium 1.0 .016 .53
Cobalt 1.0 .0016 .66
Copper 1.0 .008 .41
Iron 100 .097 45
Lithium 2.0 .012 .78
Lead 1.0 .01 .72 0.011 <1.0
Lanthanum 1.0 .0017 .72
Magnesium 100 .16 33
Manganese 2.0 .0091 .57
Molybdenum 1.0 .0038 .61
Nickel 1.0 .0038 .52
Potassium 100 2.5 65
Selenium 5.0 .15 2.8
Silver 1.0 .0024 .38
Silicon 500 4.2 93
Sodium 100 2.2 37
Strontium 2.0 .0054 .42
Thallium 1.0 .0023 .79
Tin 2.0 .02 .56
Titanium 1.0 .021 .57
Uranium 1.0 .0019 .42
Vanadium 1.0 .0087 .36
Zinc 5.0 .017 2.4
Associated samples MP25804: LA87959-1, LA87959-2, LA87959-3
_________________________________________________________________________________________________________
Page 1
48 of 57
LA8795977.1.1
BLANK RESULTS SUMMARY
Part 2 - Method Blanks
Login Number: LA87959
Account: ATCNCR - Atlas
Project: Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
QC Batch ID: MP25804 Methods: SW846 6020B
Matrix Type: AQUEOUS Units: ug/l
Prep Date: 02/17/23
MB
Metal RL IDL MDL raw final
Results < IDL are shown as zero for calculation purposes
(*) Outside of QC limits
(anr) Analyte not requested
_________________________________________________________________________________________________________
Page 2
49 of 57
LA8795977.1.1
MATRIX SPIKE AND DUPLICATE RESULTS SUMMARY
Login Number: LA87959
Account: ATCNCR - Atlas
Project: Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
QC Batch ID: MP25804 Methods: SW846 6020B
Matrix Type: AQUEOUS Units: ug/l
Prep Date: 02/17/23
LA87959-1 Spikelot QC
Metal Original MS MPICPMS6 % Rec Limits
Aluminum
Antimony
Arsenic
Barium
Beryllium
Boron
Cadmium
Calcium
Cerium
Chromium
Cobalt
Copper
Iron
Lithium
Lead 2.9 82.8 100 79.9 75-125
Lanthanum
Magnesium
Manganese
Molybdenum
Nickel
Potassium
Selenium
Silver
Silicon
Sodium
Strontium
Thallium
Tin
Titanium
Uranium
Vanadium
Zinc
Associated samples MP25804: LA87959-1, LA87959-2, LA87959-3
_________________________________________________________________________________________________________
Page 1
50 of 57
LA8795977.1.2
MATRIX SPIKE AND DUPLICATE RESULTS SUMMARY
Login Number: LA87959
Account: ATCNCR - Atlas
Project: Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
QC Batch ID: MP25804 Methods: SW846 6020B
Matrix Type: AQUEOUS Units: ug/l
Prep Date: 02/17/23
LA87959-1 Spikelot QC
Metal Original MS MPICPMS6 % Rec Limits
Results < IDL are shown as zero for calculation purposes
(*) Outside of QC limits
(N) Matrix Spike Rec. outside of QC limits
(anr) Analyte not requested
_________________________________________________________________________________________________________
Page 2
51 of 57
LA8795977.1.2
MATRIX SPIKE AND DUPLICATE RESULTS SUMMARY
Login Number: LA87959
Account: ATCNCR - Atlas
Project: Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
QC Batch ID: MP25804 Methods: SW846 6020B
Matrix Type: AQUEOUS Units: ug/l
Prep Date: 02/17/23
LA87959-1 Spikelot MSD QC
Metal Original MSD MPICPMS6 % Rec RPD Limit
Aluminum
Antimony
Arsenic
Barium
Beryllium
Boron
Cadmium
Calcium
Cerium
Chromium
Cobalt
Copper
Iron
Lithium
Lead 2.9 84.1 100 81.2 1.6 20
Lanthanum
Magnesium
Manganese
Molybdenum
Nickel
Potassium
Selenium
Silver
Silicon
Sodium
Strontium
Thallium
Tin
Titanium
Uranium
Vanadium
Zinc
Associated samples MP25804: LA87959-1, LA87959-2, LA87959-3
_________________________________________________________________________________________________________
Page 3
52 of 57
LA8795977.1.2
MATRIX SPIKE AND DUPLICATE RESULTS SUMMARY
Login Number: LA87959
Account: ATCNCR - Atlas
Project: Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
QC Batch ID: MP25804 Methods: SW846 6020B
Matrix Type: AQUEOUS Units: ug/l
Prep Date: 02/17/23
LA87959-1 Spikelot MSD QC
Metal Original MSD MPICPMS6 % Rec RPD Limit
Results < IDL are shown as zero for calculation purposes
(*) Outside of QC limits
(N) Matrix Spike Rec. outside of QC limits
(anr) Analyte not requested
_________________________________________________________________________________________________________
Page 4
53 of 57
LA8795977.1.2
SPIKE BLANK AND LAB CONTROL SAMPLE SUMMARY
Login Number: LA87959
Account: ATCNCR - Atlas
Project: Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
QC Batch ID: MP25804 Methods: SW846 6020B
Matrix Type: AQUEOUS Units: ug/l
Prep Date: 02/17/23
BSP Spikelot QC
Metal Result MPICPMS6 % Rec Limits
Aluminum
Antimony
Arsenic
Barium
Beryllium
Boron
Cadmium
Calcium
Cerium
Chromium
Cobalt
Copper
Iron
Lithium
Lead 89.0 100 89.0 80-120
Lanthanum
Magnesium
Manganese
Molybdenum
Nickel
Potassium
Selenium
Silver
Silicon
Sodium
Strontium
Thallium
Tin
Titanium
Uranium
Vanadium
Zinc
Associated samples MP25804: LA87959-1, LA87959-2, LA87959-3
_________________________________________________________________________________________________________
Page 1
54 of 57
LA8795977.1.3
SPIKE BLANK AND LAB CONTROL SAMPLE SUMMARY
Login Number: LA87959
Account: ATCNCR - Atlas
Project: Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
QC Batch ID: MP25804 Methods: SW846 6020B
Matrix Type: AQUEOUS Units: ug/l
Prep Date: 02/17/23
BSP Spikelot QC
Metal Result MPICPMS6 % Rec Limits
Results < IDL are shown as zero for calculation purposes
(*) Outside of QC limits
(anr) Analyte not requested
_________________________________________________________________________________________________________
Page 2
55 of 57
LA8795977.1.3
SERIAL DILUTION RESULTS SUMMARY
Login Number: LA87959
Account: ATCNCR - Atlas
Project: Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
QC Batch ID: MP25804 Methods: SW846 6020B
Matrix Type: AQUEOUS Units: ug/l
Prep Date: 02/17/23
LA87959-1 QC
Metal Original SDL 1:5 %DIF Limits
Aluminum
Antimony
Arsenic
Barium
Beryllium
Boron
Cadmium
Calcium
Cerium
Chromium
Cobalt
Copper
Iron
Lithium
Lead 2.91 3.29 13.2 0-20
Lanthanum
Magnesium
Manganese
Molybdenum
Nickel
Potassium
Selenium
Silver
Silicon
Sodium
Strontium
Thallium
Tin
Titanium
Uranium
Vanadium
Zinc
Associated samples MP25804: LA87959-1, LA87959-2, LA87959-3
_________________________________________________________________________________________________________
Page 1
56 of 57
LA8795977.1.4
SERIAL DILUTION RESULTS SUMMARY
Login Number: LA87959
Account: ATCNCR - Atlas
Project: Circle K#2723476, 3302 S. Holden Road, Greensboro, NC
QC Batch ID: MP25804 Methods: SW846 6020B
Matrix Type: AQUEOUS Units: ug/l
Prep Date: 02/17/23
LA87959-1 QC
Metal Original SDL 1:5 %DIF Limits
Results < IDL are shown as zero for calculation purposes
(*) Outside of QC limits
(anr) Analyte not requested
_________________________________________________________________________________________________________
Page 2
57 of 57
LA8795977.1.4