WS-28018_47300_CA_LSA_20200908

609A Piner Road, Suite 115
Wilmington, North Carolina 28409
Telephone [phone]
Fax [phone]
www.atcgroupservices.com

September 8, 2020

Mr. Gene Mao
Guilford County Dept. of Health and Human Services
Environmental Health Division
400 W. Market Street, Suit 300
Greensboro, North Carolina 27401

Re: Phase I Limited Site Assessment
Circle K Store #2704132
2810 Pinecroft Road
Greensboro, Guilford County, North Carolina
NCDEQ Facility ID No. 0-017603

Dear Mr. Mao:

ATC Associates of North Carolina, P.C., on behalf of Circle K Stores, Inc., is submitting this Phase
I Limited Site Assessment Report for the Circle K Store #2704132 located in Greensboro, North
Carolina. This report documents limited site assessment activities conducted per e-mail
correspondence dated July 27, 2020.

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

Sincerely,

ATC Associates of North Carolina, P.C.

Maureen Jackson, P.G.
Senior Project Manager

cc: Brent Puzak, Circle K Stores, Inc.
Carin Kromm, NCDEQ UST Section
Phase I Limited Site Assessment

Circle K Store #2704132
2810 Pinecroft Road
Greensboro, Guilford County, North Carolina
NCDEQ Facility ID No. 0-017603

September 8, 2020

TABLE OF CONTENTS

1.0 SITE IDENTIFICATION .................................................................................1
2.0 SITE HISTORY AND CHARACTERIZATION ...........................................2
2.1 UST Owner and Operator Information ....................................................2
2.2 UST Information ......................................................................................2
2.3 AST Information ......................................................................................2
2.4 Site Characteristics...................................................................................2
2.5 Release Information .................................................................................2
3.0 LIMITED SITE ASSESSMENT RISK CLASSIFICATION AND LAND
USE ......................................................................................................................3
4.0 RECEPTOR PATHWAY INFORMATION ...................................................6
4.1 Water Supply Wells .................................................................................6
4.2 Public Water Supplies ..............................................................................7
4.3 Surface Water Bodies ..............................................................................7
4.4 Wellhead Protection Areas ......................................................................7
4.5 Regional Geology and Hydrogeology .....................................................7
4.6 Subsurface Structures...............................................................................8
4.7 Land Use ..................................................................................................8
5.0 LIMITED SITE ASSESSMENT ACTIVITIES ..............................................8
5.1 Monitoring Well Installation....................................................................8
5.2 Soil Sampling ...........................................................................................9
5.3 Groundwater Sampling ............................................................................9
6.0 SITE GEOLOGY AND HYDROGEOLOGY.................................................9
6.1 Description of Shallow Subsurface Geology ...........................................9
6.2 Groundwater Occurrence .........................................................................10
6.3 Groundwater Flow Direction ...................................................................10
7.0 ANALYTICAL RESULTS ...............................................................................10
7.1 Soil Analytical Results .............................................................................10
7.2 Groundwater Analytical Results ..............................................................10
8.0 CONCLUSIONS AND RECOMMENDATIONS ...........................................10
8.1 Conclusions ..............................................................................................10
8.2 Recommendations ....................................................................................11
9.0 LIMITATIONS ..................................................................................................11

TABLES
Table 1 Water Supply Well Information
Table 2 Adjacent Property Ownership Information
Table 3 Monitoring Well Construction Details
Table 4 Soil Analytical Results
Table 5 Groundwater Analytical Results

FIGURES

Figure 1 Topographic Map
Figure 2 Site Map
Figure 3 1,500-Foot Radius Map
Figure 4 Dissolved Contaminants of Concern above 2L Standards

APPENDICES

Appendix A UST-23
Appendix B Boring Log and Well Construction Record
Appendix C Laboratory Analytical Results

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Circle K Store #2704132
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2.0 SITE HISTORY AND CHARACTERIZATION
2.1 UST Owner and Operator Information
There are three gasoline underground storage tanks (USTs) located at the referenced facility. The USTs
and their appurtenances are owned by Circle K Stores, Inc. of Raleigh, North Carolina. Information
regarding each of the tanks is provided below.

2.2 UST Information
UST
ID PRODUCT CAPACITY
(gals.) MATERIALS INSTALLATION
DATE
UST
STATUS
RELEASE
ASSOCIATED
(Yes/No)

1 Gasoline
(Regular) 10,000
UST: Steel;
Piping: SW
Fiberglass
04/01/84 Active No
2 Gasoline
(Premium) 10,000
UST: Steel;
Piping: SW
Fiberglass
04/01/84 Active Yes
3 Gasoline (Mid-
Grade) 10,000
UST: Steel;
Piping: SW
Fiberglass
04/01/84 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.

2.3 AST Information
There are no ASTs associated with the referenced facility.

2.4 Site Characteristics
The subject property consists of one convenience store building. The UST’s and their appurtenances are
currently active at the site. The subject property is fairly level. The subject property is located at the
intersection of Pinecroft Road and W. Vandalia Road in Greensboro, Guilford County, North Carolina.

2.5 Release Information
On January 24, 2020, during annual testing, the premium gasoline spill bucket for tank #2 was found to
not pass its hydrostatic test. The spill bucket has subsequently been repaired and a UST-23A is provided
in Appendix A.

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Circle K Store #2704132
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On April 13, 2020, ATC collected a soil sample adjacent to the premium spill bucket. On April 22, 2020,
upon receipt of the soil analytical results, ATC submitted a UST-61: 24-Hour Release and UST Leak
Reporting Form to the Guilford County Department of Health and Human Services office via e-mail
correspondence.

A Site Check Report was submitted to NCDEQ on April 29, 2020. In response to the Site Check Report,
The Guilford County Department of Health and Human Services requested the submittal of a Phase I
Limited Site Assessment (LSA).

It should be noted a previous release is noted to have occurred on the property at an unknown date and it
was issued UST incident #30338. This incident was closed on July 29, 2013. The file has been archived
by Guildford County and was not able to be reviewed at the time of this report.

3.0 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 1,500-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

2. Is a water supply well used for drinking water located within 1,000 feet of the source area of the
discharge or release? NO

Water meters were noted on properties within 1,000 feet of the source area.

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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

An unnamed surface water feature is located approximately 1,200 feet southeast of the source
area and another unnamed surface water feature is located approximately 1,085 feet north of the
source area.

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? NA

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? NA

10. Do the levels of groundwater contamination for any contaminant exceed the gross contamination
levels (GCLs) established by the Department? NO

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
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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

The property is an active convenience store and retail fuel outlet.

4. Do children visit the property? YES

Children visit the property consistent with its use.

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

The site is not restricted.

6. Do pavement, building, or other structures cap the contaminated soil? YES

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 UST basin and dispenser island areas are currently capped with concrete. The remaining
areas of the parking lot are capped with asphalt.

7. What is the zoning status of the property?

The site is zoned GB (General Business) by Guilford County.

8. Is the use of the property likely to change in the next 20 years? NO
The site is an active convenience store with no known plans for redevelopment.

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 300 feet north 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?
The closest place of public assembly is New Life Ministries Church located approximately 300
feet east of the source area. Pinecroft Baptist Church is located approximately 720 feet west of
the source area and a daycare, Kid’s Academy Child Care Center, is located approximately 830
feet south of the source area.

11. What is the zoning status of properties in the surrounding area?

The surrounding properties are zoned GB (General Business).
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12. Briefly characterize the use and activities of the land in the surrounding area.
Properties to the south, east, and west are predominantly commercial (small businesses and
churches). Properties to the north are either vacant or residential.

4.0 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 Resources 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.

4.1 Water Supply Wells
ATC conducted a water supply well survey in the surrounding vicinity of the site. As part of the survey,
ATC performed the following:
 ATC conducted a visual reconnaissance on August 5, 2020. The reconnaissance was performed by
driving and/or walking throughout the surrounding area and visually assessing the individual parcels
of land for evidence of water supply wells, well houses, and/or water meters within a radius of 1,500
feet from the source area.
 ATC contacted the City of Greensboro Water Resources Department to determine which
properties within 1,500 feet of the site were connected to the public water system (i.e., receive a
water bill).

Based on the above reconnaissance, it was determined that the source property and properties within 1,500
feet of the source area are connected to the public water system. ATC identified one inactive water supply
well located approximately 1,300 feet south of the source area. According to the property owner, the
property is connected to the public water system and the well has been inactive and capped since 1977.
Water supply well information is provided on Table 1 and the approximate location of the inactive water
supply well is provided on Figure 3.
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4.2 Public Water Supplies
Public water supply to the area is provided by the City of Greensboro Water Resources Department.

4.3 Surface Water Bodies
As shown on Figure 1, an unnamed surface water feature is located approximately 1,200 feet southeast of
the source area and another unnamed surface water feature is located approximately 1,085 feet north of
the source area.

4.4 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).

4.5 Regional Geology and Hydrogeology
According to the Geologic Map of North Carolina (1985) produced by Philip Brown, et al, the property is
located in the Piedmont Physiographic Province and is underlain by the Carolina Slate Belt. The regional
geology in the vicinity of the site is metamorphosed granitic rock which is characterized as megacrystic
and well foliated.

The occurrence and movement of groundwater in the Piedmont is within two separate but interconnected
water-bearing zones. A shallow water-bearing zone occurs within the surficial soils and a deeper zone
within the underlying bedrock.

Groundwater in the shallow soil zone occurs in the interstitial pore spaces between the grains comprising
the surficial soils. Groundwater in this zone is typically under water table or unconfined conditions.
Groundwater movement is generally lateral from recharge areas to small streams that serve as localized
discharge points.

The occurrence and movement of groundwater in the underlying water-bearing zones within the
crystalline bedrock is controlled by secondary joints, fractures, and faults within the bedrock. On a
regional scale, the direction of groundwater flow is typically from uplands to major streams and
groundwater sinks.

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4.6 Subsurface Structures
Subsurface structures identified at the subject facility include sanitary sewer, municipal water lines, and
storm water lines. A water meter was observed on-site. Other utilities may be present. Basements were
not observed on adjacent properties.

4.7 Land Use
Immediate surrounding properties are utilized for commercial or residential purposes. Adjacent property
use information is summarized in Table 2.

5.0 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 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.

5.1 Monitoring Well Installation
Monitoring well MW-1 was installed by personnel with Geologic Exploration (GEX), under supervision
of personnel from ATC, on August 4, 2020. The location of the monitoring well is depicted on Figure 2.

Monitoring well MW-1 was installed to a depth of approximately 20 feet below ground surface (bgs).
The well was installed using hollow-stem augers and 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. A coarse sand pack (filter pack) was used to backfill the well
annulus to a depth of approximately 2 feet above the well screen. A two-foot thick bentonite seal was
placed above the filter pack, and portland cement was used to fill the remainder of the well annulus to
ground surface.

The well was installed as flush-mounted and provided with a sealing and locking cap. A protective, steel,
traffic-bearing cover was placed over the well upon completion. The boring log and well construction
record are presented in Appendix B.

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5.2 Soil Sampling
On August 4, 2020, ATC personnel collected two soil samples from the borehole of monitoring well
MW-1 at approximate depths of nine to ten feet bgs and 13 to 14 feet bgs. The soil samples (labeled
SMW-1A and SMW-1B) were placed into laboratory-approved containers, packed in ice, and delivered
under chain-of-custody to SGS for analyses. The soil sample was analyzed by Environmental Protection
Agency (EPA) Method 8260 and Massachusetts Department of Environmental Protection (MADEP)
Method for volatile petroleum hydrocarbons (VPH).

5.3 Groundwater Sampling
On August 5, 2020, a groundwater sample was collected from monitoring well MW-1. The water level
was recorded from monitoring well MW-1 (12.15 feet) utilizing an oil/water interface probe. Prior to
sample collection, the well volume was calculated, and a minimum of three well volumes was purged
from the well column to ensure replacement of stagnant water with representative formation water.

The groundwater sample was collected into laboratory-approved containers, packed in ice and delivered
under chain-of-custody to SGS for analyses. The groundwater sample was analyzed for volatile organic
compounds (VOCs) via EPA Method 6200B to include methyl tert butyl ether (MTBE), diisopropyl ether
(IPE), ethanol, and oxygenates, EPA Method 504.1 for ethylene dibromide (EDB), EPA Method 6020 for
lead, and MADEP Method for VPH.

6.0 SITE GEOLOGY AND HYDROGEOLOGY

6.1 Description of Shallow Subsurface Geology
According to the United States Department of Agriculture Natural Resources Conservation Services Web
Soil Survey, the site lies within the Mecklenburg-Urban Land Complex. This complex is typically found
on hillslopes on ridges. The parent material is saprolite derived from diorite and/or gabbro and/or diabase
and/or gneiss. The soil is typically loam for the first 8 inches, clay from 8 to 25 inches, clay loam from
25 to 36 inches, and a sandy clay loam from 36 to 80 inches. The slope is 2 to 10 percent and the soil is
well drained and runoff is medium. Depth to the water table is more than 80 inches and the available
water capacity is high.

Soil encountered during site activities generally consisted of a reddish-brown clayey silt from 0.5 feet to
20 feet bgs. The boring log and well construction record for monitoring well MW-1 is provided in
Appendix B.
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6.2 Groundwater Occurrence
On August 5, 2020, the water level was measured in monitoring well MW-1 at a depth of 12.15 feet bgs.
Table 3 provides a summary of well construction and depth-to-groundwater measurement.

6.3 Groundwater Flow Direction
Based on limited groundwater elevation data from only one monitoring well, a groundwater contour map
could not be generated at this time. Based on a review of the topographic map (Figure 1), it appears
groundwater may flow north toward the unnamed surface water feature located approximately 1,085 feet
north of the source area.

7.0 ANALYTICAL RESULTS
7.1 Soil Analytical Results
Laboratory analytical results of the soil samples collected from the borehole of monitoring well MW-1
detected benzene and dibromochloromethane concentrations above established Soil-to-Groundwater
(STGW) Maximum Soil Contaminant Concentrations (MSCCs) but below established Residential
MSCCs. A summary of the soil analytical data is presented in Table 4. The location of the soil sample is
provided on Figure 2. A copy of the laboratory report and chain-of-custody documents are included in
Appendix C.

7.2 Groundwater Analytical Results
Laboratory analytical results of the groundwater sample collected from monitoring well MW-1 detected
several dissolved target compound concentration above established 2L Standards but below GCLs. A
summary of the groundwater analytical data is presented in Table 5. Dissolved contaminants of concern
above 2L Standards are depicted on Figure 4. A copy of the laboratory analytical report is included as
Appendix C.
8.0 CONCLUSIONS AND RECOMMENDATIONS
8.1 Conclusions
Based on the information obtained during this LSA, it appears the site has been impacted from a
petroleum release.
 The subject facility and surrounding area are connected to the public water supply
provided by the City of Greensboro Water Resources Department.
 Active water supply wells were not identified within 1,500 feet of the source area. ATC
identified one inactive water supply well located approximately 1,300 feet south of the
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source area. According to the property owner, the property is connected to the public water
system and the well have been inactive and capped since 1977.
 The subject facility is not located within an approved Wellhead Protection Area.
 Surface water was not identified within 500 feet of the source area. The nearest surface
water feature is an unnamed surface water feature located approximately 1,085 feet north
of the source area.
 Free product was not detected in monitoring well MW-1.
 Laboratory analytical results of the soil samples collected from the borehole of
monitoring well MW-1 detected benzene and dibromochloromethane concentrations
above established Soil-to-Groundwater (STGW) Maximum Soil Contaminant
Concentrations (MSCCs) but below established Residential MSCCs.
 Laboratory analytical results of the groundwater sample collected from monitoring well
MW-1 detected several dissolved target compound concentrations above established 2L
Standards but below GCLs.

8.2 Recommendations
The results of the LSA activities indicate that the subject facility meets the criteria for Low Risk
classification.

9.0 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 #2704132
2810 PINECROFT ROAD
GREENSBORO, GUILFORD COUNTY, NORTH CAROLINA
NCDEQ FACILITY NO. 0-017603
1 7852262606-
000 3025 Tew Street Joseph and Pamela
White
6981 Mcleansville Road
Mcleansville, NC 27301 Yes Inactive and capped since
1977
1,300 feet
south
Well #Well Owner
Connected to
Public Water
Distance
from source
area of
release (ft.)PIN No.Well Address Well UseMailing Address
TABLE 2
ADJACENT PROPERTY OWNERSHIP INFORMATION
CIRCLE K STORE #2704132
2810 PINECROFT ROAD
GREENSBORO, GUILFORD COUNTY, NORTH CAROLINA
NCDEQ FACILITY ID NO. 0-017603
Property Address Property Owner
Parcel Number
Parcel Use
Zoning
Site: Balkhi Station, LLC PIN #7852176713-000
2810 Pinecroft Road 7732 Maywood Crest Drive Parcel Use: Convenience store and retail fuel outlet
Greensboro, NC 27407 West Palm Beach, Florida 33412 Zoning: General Business (GB)
North: Mega Steam Carpet Cleaning, Inc.PIN #7852176829-000
2804 Pinecroft Road 6300 High View Road Parcel Use: Undeveloped/Vacant
Greensboro, NC 27407 Greensboro, North Carolina 27410 Zoning: General Business (GB)
East:S Investment Co., Inc.PIN #7852178869-000
2807-2809 Pinecroft Road 100 S. Elm Street, Suite 300 Parcel Use: Small Strip Mall
Greensboro, NC 27407 Greensboro, North Carolina 27401 Zoning: General Business (GB)
West Nixon Ventures, LLC PIN #7852173788-000
2008 W. Vandalia Road P.O. Box 2295 Parcel Use: Town and Country Meat Product Market
Greensboro, NC 27407 Jamestown, North Carolina 27282 Zoning: General Business (GB)
South:Casablanca Auto Sales and Service Center, Inc.PIN #7852175495-000
2001 W. Vandalia Road 2001 W. Vandalia Road Parcel Use: Car Dealership
Greensboro, NC 27407 Greensboro, North Caorlina 27407 Zoning: General Business (GB)
TABLE 3
MONITORING WELL CONSTRUCTION DETAILS
CIRCLE K STORE #2704132
2810 PINECROFT ROAD
GREENSBORO, GUILFORD COUNTY, NORTH CAROLINA
NCDEQ FACILITY NO. 0-017603
Depth of
Water (feet)
Depth to
Product (feet)
Groundwater
Elevation (feet)
MW-1 8/4/2020 2 10-20 20.0 100.00 12.15 --96.30
Notes:
1. Elevation is referenced to an arbitrary on-site benchmark of 100.00 feet.
2. Total well depth measured from top of casing.
Date Measured: 8/5/20
Monitoring
Well ID
Date
Installed
Well
Casing
Diameter
(Inches)
Screened
Interval
(feet)
Depth of Well
(feet)
Top of Casing
(feet)
TABLE 4
SOIL ANALYTICAL RESULTS
CIRCLE K STORE #2704132
2810 PINECROFT ROAD
GREENSBORO, GUILFORD COUNTY, NORTH CAROLINA
NCDEQ FACILITY NO. 0-017603
Sample ID Date
Sampled
Sample
Depth (feet
below
ground
surface)AcetoneBenzeneBromodichloromethaneBromoformChloroformDibromochloromethaneDi-Isopropyl EtherTolueneEthylbenzeneMethyl ChlorideMethylene BromideMethylene ChlorideMethyl Ethyl KetoneMTBETetrachloroethylene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneTotal XylenesSMW-1A 8/4/2020 9-10 0.560 0.0172 0.0113 0.0017 0.209 0.0048 0.0020 0.0097 0.0056 0.0070 0.0013 0.0087 0.169 0.0149 0.0025 0.0336 0.0146 0.0421
SMW-1B 8/4/2020 13-14 0.297 0.0176 0.0156 0.0042 0.185 0.0086 0.0024 0.0093 0.0059 <0.0069 0.0015 0.0082 0.0782 0.0207 0.0018 0.0498 0.0217 0.0464
24 0.0056 NE 0.026 0.37 0.0021 0.37 4.3 4.9 0.02 NE 0.02 16 0.091 0.0074 8.5 8.3 4.6
14,000 18 NE 81 20 7 156 1,200 1,560 49 NE 85 9,385 350 1.1 782 782 3,129
360,000 164 NE 724 180 68 4,088 32,000 40,000 440 NE 763 245,280 3,100 10 20,440 20,440 81,760
Notes:
1. MSCC = Maximum Soil Contaminant Concentration established by NCDEQ.
2. Concentrations reported in milligrams per kilogram (mg/kg).
3. "<" = not detected at or above the laboratory detection limit.
4. Bold indicates concentrations above STGW-MSCC.
Residential MSCCs (mg/kg)
Industrial/Commercial MSCCs (mg/kg)
ANALYTICAL METHOD:
Soil-to-Groundwater MSCCs (mg/kg)
EPA METHOD 8260
TABLE 5
GROUNDWATER ANALYTICAL RESULTS
CIRCLE K STORE #2704132
2810 PINECROFT ROAD
GREENSBORO, GUILFORD COUNTY, NORTH CAROLINA
NCDEQ FACILITY NO. 0-017603
Sample ID Date Sampled
BenzeneBromodichloromethaneBromoformn-Butylbenzenesec-ButylbenzeneCarbon TetrachlorideChloroformDibromochloromethaneIsopropylbenzenep-IsopropyltolueneMethylene Bromiden-PropylbenzeneTert-Amyl AlcoholTert-Butyl AlcoholTetrachloroethyleneToluene1,2,4-Trimethylbenzen1,3,5-TrimethylbenzeneEthylbenzeneTotal XylenesMTBENaphthaleneC5-C8 AliphaticsC9-C18 AliphaticsC9-C22 AromaticsMW-1 8/5/2020 146 303 145 38.1 17.4 104 2,100 205 61.5 12.4 11.9 252 2,380 454 33.6 447 1,800 676 646 3,000 67.7 231 3,090 19,800 7,470
1 NE 4 70 70 NE 70 0.4 70 25 NE 70 NE 10 0.7 600 400 400 600 500 20 6 400 700 200
5,000 NE 4,000 6,900 8,500 NE 70,000 400 25,000 11,700 NE 30,000 NE 10,000 700 260,000 28,500 25,000 84,500 85,500 20,000 6,000 NE NE NE
Notes:
1. Concentrations reported in micrograms per liter (ug/L).
2. NE = Not established.
3. Bold indicates concentrations above NCAC 2L Groundwater Quality Standard.
NCAC 2L Groundwater Quality
Standards (ug/L)
Gross Contaminant Level (ug/L)
ANALTYICAL METHOD MADEP Method for VPHEPA METHOD 6200B

FIGURES
MW-1
SITE
1,500' RADIUS1,000' RADIUS500' RADIUS
MW-1

APPENDIX A
UST-23A FOR REPAIRED PREMIUM
GASOLINE SPILL BUCKET

APPENDIX B
BORING LOG AND
WELL CONSTRUCTION RECORD

08-07-2020 S:\Enviro\Pantry\2704132 - Greensboro\Boring Logs\MW-1.borATC Project #CIRK4132
Greensboro, Guilford County, North Carolina
2810 Pinecroft Road
Circle K Store #2704132
Boring terminated at 22 feet bgs.
The well was lifted to a depth of 20 feet bgs in order to bracket the water column.
Soil sample SMW-1A was collected at 9-10 feet bgs @ 10:40
Soil sample SMW-1B was collected at 13-14 feet bgs @ 10:50
BORING LOG: MW-1
Date(s) Drilled : 8/4/2020
Drilling Contractor : Geologic Exploration
Drilling Method : Hollow Stem Auger
Boring Diameter : 4.25 Inches
Sampling Method : Observed cuttings
Sampling Interval : Continuous
Logged By : Carter Paradis
Depth In Feet0
2
4
6
8
10
12
14
16
18
20
22 USCSAR
ML
ML GRAPHICDESCRIPTION
Asphalt
CLAYEY SILT, red brown, dry
CLAYEY SILT, red brown, wet
End of boring
PID
ppm
56.2
40.3
Well: MW-1
Grout
Bentonite
Sand Pack
Cover
Casing
Screen
WELL CONSTRUCTION RECORD
This form can be used for single or multiple wells
Form GW-1 North Carolina Department of Environment and Natural Resources – Division of Water Quality Revised Jan. 2013
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. 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
Non-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.Number of wells constructed: For multiple injection or non-water supply wells ONLY with the same construction, you can submit one form.
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 site details or well construction details. You may also attach additional pages if necessary.
SUBMITTAL INSTUCTIONS
24a. For All Wells: Submit this form within 30 days of completion of well construction to the following:
Division of Water Quality, Information Processing Unit, 1617 Mail Service Center, Raleigh, NC 27699-1617
24b. For Injection Wells: In addition to sending the form to the address in 24a
above, also submit a copy of this form within 30 days of completion of well construction to the following:
Division of Water Quality, Underground Injection Control Program, 1636 Mail Service Center, Raleigh, NC 27699-1636
24c. For Water Supply & Injection Wells: In addition to sending the form to the address(es) above, also submit one copy of this form within 30 days of
completion of well construction to the county health department of the county where constructed.
For Internal Use ONLY:

APPENDIX C
LABORATORY ANALYTICAL RESULTS

08/14/20
Technical Report for
ATC Group Services LLC
Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
SGS Job Number: LA65746
Sampling Dates: 08/04/20 - 08/05/20
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: Amy Jackson 337-237-4775
Ron Benjamin
Lab Director
Scott, LA 08/14/20
e-Hardcopy 2.0
Automated Report
63
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 63
LA65746
Table of Contents
-1-
Sections:
Section 1: Sample Summary ...................................................................................................3
Section 2: Summary of Hits ....................................................................................................4
Section 3: Sample Results ........................................................................................................6
3.1: LA65746-1: SMW-1A ..................................................................................................7
3.2: LA65746-2: SMW-1B ..................................................................................................11
3.3: LA65746-3: MW-1 .......................................................................................................15
Section 4: Misc. Forms ............................................................................................................21
4.1: Chain of Custody ...........................................................................................................22
Section 5: MS Volatiles - QC Data Summaries .....................................................................25
5.1: Method Blank Summary ................................................................................................26
5.2: Blank Spike/Blank Spike Duplicate Summary ..............................................................33
5.3: Matrix Spike/Matrix Spike Duplicate Summary ...........................................................40
Section 6: GC Volatiles - QC Data Summaries .....................................................................44
6.1: Method Blank Summary ................................................................................................45
6.2: Blank Spike/Blank Spike Duplicate Summary ..............................................................48
6.3: Duplicate Summary .......................................................................................................51
Section 7: Metals Analysis - QC Data Summaries ................................................................53
7.1: Prep QC MP19136: Pb ..................................................................................................54 12345672 of 63
LA65746
SGS North America Inc.
Sample Summary
ATC Group Services LLC
Job No:LA65746
Circle K #4132, 2810 Pinecroft Rd, 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 RL
LA65746-1 08/04/20 10:40 CP 08/06/20 SO Soil SMW-1A
LA65746-2 08/04/20 10:50 CP 08/06/20 SO Soil SMW-1B
LA65746-3 08/05/20 09:00 CP 08/06/20 AQ Ground Water MW-1
Soil samples reported on a dry weight basis unless otherwise indicated on result page.
3 of 63
LA657461
Summary of Hits Page 1 of 2
Job Number:LA65746
Account:ATC Group Services LLC
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
Collected:08/04/20 thru 08/05/20
Lab Sample ID Client Sample ID Result/
Analyte Qual RL MDL Units Method
LA65746-1 SMW-1A
Acetone 0.560 0.064 mg/kg SW846 8260D
Benzene 0.0172 0.00064 mg/kg SW846 8260D
Bromodichloromethane 0.0113 0.0013 mg/kg SW846 8260D
Bromoform 0.0017 0.0013 mg/kg SW846 8260D
Chloroform 0.209 0.0013 mg/kg SW846 8260D
Dibromochloromethane 0.0048 0.0013 mg/kg SW846 8260D
Di-Isopropyl Ether 0.0020 0.0013 mg/kg SW846 8260D
Ethylbenzene 0.0056 0.0013 mg/kg SW846 8260D
Methyl Chloride 0.0070 0.0064 mg/kg SW846 8260D
Methylene Bromide 0.0013 0.0013 mg/kg SW846 8260D
Methylene Chloride 0.0087 0.0064 mg/kg SW846 8260D
Methyl Ethyl Ketone 0.169 0.016 mg/kg SW846 8260D
Methyl Tert Butyl Ether 0.0149 0.0013 mg/kg SW846 8260D
Tetrachloroethylene 0.0025 0.0013 mg/kg SW846 8260D
Toluene 0.0097 0.0064 mg/kg SW846 8260D
1,2,4-Trimethylbenzene 0.0336 0.0064 mg/kg SW846 8260D
1,3,5-Trimethylbenzene 0.0146 0.0064 mg/kg SW846 8260D
m,p-Xylene 0.0249 0.0026 mg/kg SW846 8260D
o-Xylene 0.0172 0.0013 mg/kg SW846 8260D
Xylene (total)0.0421 0.0026 mg/kg SW846 8260D
LA65746-2 SMW-1B
Acetone 0.297 0.069 mg/kg SW846 8260D
Benzene 0.0176 0.00069 mg/kg SW846 8260D
Bromodichloromethane 0.0156 0.0014 mg/kg SW846 8260D
Bromoform 0.0042 0.0014 mg/kg SW846 8260D
Chloroform 0.185 0.0014 mg/kg SW846 8260D
Dibromochloromethane 0.0086 0.0014 mg/kg SW846 8260D
Di-Isopropyl Ether 0.0024 0.0014 mg/kg SW846 8260D
Ethylbenzene 0.0059 0.0014 mg/kg SW846 8260D
Methylene Bromide 0.0015 0.0014 mg/kg SW846 8260D
Methylene Chloride 0.0082 0.0069 mg/kg SW846 8260D
Methyl Ethyl Ketone 0.0782 0.017 mg/kg SW846 8260D
Methyl Tert Butyl Ether 0.0207 0.0014 mg/kg SW846 8260D
Tetrachloroethylene 0.0018 0.0014 mg/kg SW846 8260D
Toluene 0.0093 0.0069 mg/kg SW846 8260D
1,2,4-Trimethylbenzene 0.0498 0.0069 mg/kg SW846 8260D
1,3,5-Trimethylbenzene 0.0217 0.0069 mg/kg SW846 8260D
m,p-Xylene 0.0265 0.0027 mg/kg SW846 8260D
o-Xylene 0.0199 0.0014 mg/kg SW846 8260D
Xylene (total)0.0464 0.0027 mg/kg SW846 8260D
4 of 63
LA657462
Summary of Hits Page 2 of 2
Job Number:LA65746
Account:ATC Group Services LLC
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
Collected:08/04/20 thru 08/05/20
Lab Sample ID Client Sample ID Result/
Analyte Qual RL MDL Units Method
LA65746-3 MW-1
Benzene 146 10 ug/l SM 6200B
Bromodichloromethane 303 10 ug/l SM 6200B
Bromoform 145 10 ug/l SM 6200B
n-Butylbenzene 38.1 10 ug/l SM 6200B
sec-Butylbenzene 17.4 10 ug/l SM 6200B
Carbon Tetrachloride 104 4.0 ug/l SM 6200B
Chloroform 2100 25 ug/l SM 6200B
Dibromochloromethane 205 4.0 ug/l SM 6200B
Ethylbenzene 646 10 ug/l SM 6200B
Isopropylbenzene 61.5 10 ug/l SM 6200B
p-Isopropyltoluene 12.4 10 ug/l SM 6200B
Methylene Bromide 11.9 10 ug/l SM 6200B
Methyl Tert Butyl Ether 67.7 10 ug/l SM 6200B
Naphthalene 231 10 ug/l SM 6200B
n-Propylbenzene 252 10 ug/l SM 6200B
Tert-Amyl Alcohol 2380 500 ug/l SM 6200B
Tert-Butyl Alcohol 454 200 ug/l SM 6200B
Tetrachloroethylene 33.6 10 ug/l SM 6200B
Toluene 447 10 ug/l SM 6200B
1,2,4-Trimethylbenzene 1800 10 ug/l SM 6200B
1,3,5-Trimethylbenzene 676 10 ug/l SM 6200B
m,p-Xylene 2100 20 ug/l SM 6200B
o-Xylene 907 10 ug/l SM 6200B
Xylene (total)3000 10 ug/l SM 6200B
C5- C8 Aliphatics (Unadj.)3090 100 ug/l MADEP VPH REV 2.1
C9- C12 Aliphatics (Unadj.)19800 5000 ug/l MADEP VPH REV 2.1
C9- C10 Aromatics (Unadj.)7470 5000 ug/l MADEP VPH REV 2.1
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LA657462
SGS North America Inc.
Sample Results
Report of Analysis
Scott, LA
Section 3
6 of 63
LA657463
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:SMW-1A
Lab Sample ID:LA65746-1 Date Sampled:08/04/20
Matrix:SO - Soil Date Received:08/06/20
Method:SW846 8260D SW846 5035 Percent Solids:71.9
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 2H0066798.D 1 08/12/20 18:35 CP 08/06/20 14:22 n/a V2H2630
Run #2
Initial Weight
Run #1 5.4 g
Run #2
VOA List for NC
CAS No.Compound Result RL Units Q
67-64-1 Acetone 0.560 0.064 mg/kg
71-43-2 Benzene 0.0172 0.00064 mg/kg
108-86-1 Bromobenzene ND 0.0013 mg/kg
74-97-5 Bromochloromethane ND 0.0013 mg/kg
75-27-4 Bromodichloromethane 0.0113 0.0013 mg/kg
75-25-2 Bromoform 0.0017 0.0013 mg/kg
104-51-8 n-Butylbenzene ND 0.0064 mg/kg
135-98-8 sec-Butylbenzene ND 0.0064 mg/kg
98-06-6 tert-Butylbenzene ND 0.0013 mg/kg
56-23-5 Carbon Tetrachloride ND 0.0013 mg/kg
108-90-7 Chlorobenzene ND 0.0013 mg/kg
75-00-3 Chloroethane ND 0.0013 mg/kg
67-66-3 Chloroform 0.209 0.0013 mg/kg
95-49-8 o-Chlorotoluene ND 0.0064 mg/kg
106-43-4 p-Chlorotoluene ND 0.0064 mg/kg
124-48-1 Dibromochloromethane 0.0048 0.0013 mg/kg
96-12-8 1,2-Dibromo-3-chloropropane ND 0.0064 mg/kg
106-93-4 1,2-Dibromoethane ND 0.0013 mg/kg
75-71-8 Dichlorodifluoromethane ND 0.0013 mg/kg
541-73-1 m-Dichlorobenzene ND 0.0013 mg/kg
95-50-1 o-Dichlorobenzene ND 0.0013 mg/kg
106-46-7 p-Dichlorobenzene ND 0.0013 mg/kg
75-34-3 1,1-Dichloroethane ND 0.0013 mg/kg
107-06-2 1,2-Dichloroethane ND 0.0013 mg/kg
75-35-4 1,1-Dichloroethylene ND 0.0013 mg/kg
156-59-2 cis-1,2-Dichloroethylene ND 0.0013 mg/kg
156-60-5 trans-1,2-Dichloroethylene ND 0.0013 mg/kg
78-87-5 1,2-Dichloropropane ND 0.0013 mg/kg
142-28-9 1,3-Dichloropropane ND 0.0013 mg/kg
594-20-7 2,2-Dichloropropane ND 0.0013 mg/kg
563-58-6 1,1-Dichloropropene ND 0.0013 mg/kg
10061-01-5 cis-1,3-Dichloropropene ND 0.0013 mg/kg
ND = Not detected 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 63
LA6574633.1
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:SMW-1A
Lab Sample ID:LA65746-1 Date Sampled:08/04/20
Matrix:SO - Soil Date Received:08/06/20
Method:SW846 8260D SW846 5035 Percent Solids:71.9
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
VOA List for NC
CAS No.Compound Result RL Units Q
10061-02-6 trans-1,3-Dichloropropene ND 0.0013 mg/kg
108-20-3 Di-Isopropyl Ether 0.0020 0.0013 mg/kg
64-17-5 Ethyl Alcohol ND 0.52 mg/kg
100-41-4 Ethylbenzene 0.0056 0.0013 mg/kg
591-78-6 2-Hexanone ND 0.016 mg/kg
87-68-3 Hexachlorobutadiene ND 0.0064 mg/kg
98-82-8 Isopropylbenzene ND 0.0064 mg/kg
99-87-6 p-Isopropyltoluene ND 0.0064 mg/kg
74-83-9 Methyl Bromide ND 0.013 mg/kg
74-87-3 Methyl Chloride 0.0070 0.0064 mg/kg
74-95-3 Methylene Bromide 0.0013 0.0013 mg/kg
75-09-2 Methylene Chloride 0.0087 0.0064 mg/kg
78-93-3 Methyl Ethyl Ketone 0.169 0.016 mg/kg
108-10-1 4-Methyl-2-pentanone ND 0.016 mg/kg
1634-04-4 Methyl Tert Butyl Ether 0.0149 0.0013 mg/kg
91-20-3 Naphthalene ND 0.0064 mg/kg
103-65-1 n-Propylbenzene ND 0.0064 mg/kg
100-42-5 Styrene ND 0.0013 mg/kg
630-20-6 1,1,1,2-Tetrachloroethane ND 0.0013 mg/kg
79-34-5 1,1,2,2-Tetrachloroethane ND 0.0013 mg/kg
127-18-4 Tetrachloroethylene 0.0025 0.0013 mg/kg
108-88-3 Toluene 0.0097 0.0064 mg/kg
87-61-6 1,2,3-Trichlorobenzene ND 0.0064 mg/kg
120-82-1 1,2,4-Trichlorobenzene ND 0.0064 mg/kg
71-55-6 1,1,1-Trichloroethane ND 0.0013 mg/kg
79-00-5 1,1,2-Trichloroethane ND 0.0013 mg/kg
79-01-6 Trichloroethylene ND 0.0013 mg/kg
75-69-4 Trichlorofluoromethane ND 0.0013 mg/kg
96-18-4 1,2,3-Trichloropropane ND 0.0064 mg/kg
95-63-6 1,2,4-Trimethylbenzene 0.0336 0.0064 mg/kg
108-67-8 1,3,5-Trimethylbenzene 0.0146 0.0064 mg/kg
108-05-4 Vinyl Acetate ND 0.0064 mg/kg
75-01-4 Vinyl Chloride ND 0.0013 mg/kg
m,p-Xylene 0.0249 0.0026 mg/kg
95-47-6 o-Xylene 0.0172 0.0013 mg/kg
1330-20-7 Xylene (total)0.0421 0.0026 mg/kg
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 103%59-143%
ND = Not detected 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 63
LA6574633.1
SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:SMW-1A
Lab Sample ID:LA65746-1 Date Sampled:08/04/20
Matrix:SO - Soil Date Received:08/06/20
Method:SW846 8260D SW846 5035 Percent Solids:71.9
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
VOA List for NC
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
2037-26-5 Toluene-D8 102%52-159%
460-00-4 4-Bromofluorobenzene 95%38-183%
ND = Not detected 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 63
LA6574633.1
SGS North America Inc.
Report of Analysis Page 1 of 1
Client Sample ID:SMW-1A
Lab Sample ID:LA65746-1 Date Sampled:08/04/20
Matrix:SO - Soil Date Received:08/06/20
Method:MADEP VPH REV 2.1 Percent Solids:71.9
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 LE374581.D 1 08/12/20 00:43 NN n/a n/a GLE2109
Run #2
Initial Weight Final Volume Methanol Aliquot
Run #1 5.3 g 5.0 ml 100 ul
Run #2
MA VPH list
CAS No.Compound Result RL Units Q
C5- C8 Aliphatics (Unadj.)ND 8.5 mg/kg
C9- C12 Aliphatics (Unadj.)ND 8.5 mg/kg
C9- C10 Aromatics (Unadj.)ND 8.5 mg/kg
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
615-59-8 2,5-Dibromotoluene 95.5%70-130%
615-59-8 2,5-Dibromotoluene 86.3%70-130%
ND = Not detected 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 63
LA6574633.1
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:SMW-1B
Lab Sample ID:LA65746-2 Date Sampled:08/04/20
Matrix:SO - Soil Date Received:08/06/20
Method:SW846 8260D SW846 5035 Percent Solids:71.4
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 2H0066799.D 1 08/12/20 18:59 CP 08/06/20 14:22 n/a V2H2630
Run #2
Initial Weight
Run #1 5.1 g
Run #2
VOA List for NC
CAS No.Compound Result RL Units Q
67-64-1 Acetone 0.297 0.069 mg/kg
71-43-2 Benzene 0.0176 0.00069 mg/kg
108-86-1 Bromobenzene ND 0.0014 mg/kg
74-97-5 Bromochloromethane ND 0.0014 mg/kg
75-27-4 Bromodichloromethane 0.0156 0.0014 mg/kg
75-25-2 Bromoform 0.0042 0.0014 mg/kg
104-51-8 n-Butylbenzene ND 0.0069 mg/kg
135-98-8 sec-Butylbenzene ND 0.0069 mg/kg
98-06-6 tert-Butylbenzene ND 0.0014 mg/kg
56-23-5 Carbon Tetrachloride ND 0.0014 mg/kg
108-90-7 Chlorobenzene ND 0.0014 mg/kg
75-00-3 Chloroethane ND 0.0014 mg/kg
67-66-3 Chloroform 0.185 0.0014 mg/kg
95-49-8 o-Chlorotoluene ND 0.0069 mg/kg
106-43-4 p-Chlorotoluene ND 0.0069 mg/kg
124-48-1 Dibromochloromethane 0.0086 0.0014 mg/kg
96-12-8 1,2-Dibromo-3-chloropropane ND 0.0069 mg/kg
106-93-4 1,2-Dibromoethane ND 0.0014 mg/kg
75-71-8 Dichlorodifluoromethane ND 0.0014 mg/kg
541-73-1 m-Dichlorobenzene ND 0.0014 mg/kg
95-50-1 o-Dichlorobenzene ND 0.0014 mg/kg
106-46-7 p-Dichlorobenzene ND 0.0014 mg/kg
75-34-3 1,1-Dichloroethane ND 0.0014 mg/kg
107-06-2 1,2-Dichloroethane ND 0.0014 mg/kg
75-35-4 1,1-Dichloroethylene ND 0.0014 mg/kg
156-59-2 cis-1,2-Dichloroethylene ND 0.0014 mg/kg
156-60-5 trans-1,2-Dichloroethylene ND 0.0014 mg/kg
78-87-5 1,2-Dichloropropane ND 0.0014 mg/kg
142-28-9 1,3-Dichloropropane ND 0.0014 mg/kg
594-20-7 2,2-Dichloropropane ND 0.0014 mg/kg
563-58-6 1,1-Dichloropropene ND 0.0014 mg/kg
10061-01-5 cis-1,3-Dichloropropene ND 0.0014 mg/kg
ND = Not detected J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
11 of 63
LA6574633.2
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:SMW-1B
Lab Sample ID:LA65746-2 Date Sampled:08/04/20
Matrix:SO - Soil Date Received:08/06/20
Method:SW846 8260D SW846 5035 Percent Solids:71.4
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
VOA List for NC
CAS No.Compound Result RL Units Q
10061-02-6 trans-1,3-Dichloropropene ND 0.0014 mg/kg
108-20-3 Di-Isopropyl Ether 0.0024 0.0014 mg/kg
64-17-5 Ethyl Alcohol ND 0.55 mg/kg
100-41-4 Ethylbenzene 0.0059 0.0014 mg/kg
591-78-6 2-Hexanone ND 0.017 mg/kg
87-68-3 Hexachlorobutadiene ND 0.0069 mg/kg
98-82-8 Isopropylbenzene ND 0.0069 mg/kg
99-87-6 p-Isopropyltoluene ND 0.0069 mg/kg
74-83-9 Methyl Bromide ND 0.014 mg/kg
74-87-3 Methyl Chloride ND 0.0069 mg/kg
74-95-3 Methylene Bromide 0.0015 0.0014 mg/kg
75-09-2 Methylene Chloride 0.0082 0.0069 mg/kg
78-93-3 Methyl Ethyl Ketone 0.0782 0.017 mg/kg
108-10-1 4-Methyl-2-pentanone ND 0.017 mg/kg
1634-04-4 Methyl Tert Butyl Ether 0.0207 0.0014 mg/kg
91-20-3 Naphthalene ND 0.0069 mg/kg
103-65-1 n-Propylbenzene ND 0.0069 mg/kg
100-42-5 Styrene ND 0.0014 mg/kg
630-20-6 1,1,1,2-Tetrachloroethane ND 0.0014 mg/kg
79-34-5 1,1,2,2-Tetrachloroethane ND 0.0014 mg/kg
127-18-4 Tetrachloroethylene 0.0018 0.0014 mg/kg
108-88-3 Toluene 0.0093 0.0069 mg/kg
87-61-6 1,2,3-Trichlorobenzene ND 0.0069 mg/kg
120-82-1 1,2,4-Trichlorobenzene ND 0.0069 mg/kg
71-55-6 1,1,1-Trichloroethane ND 0.0014 mg/kg
79-00-5 1,1,2-Trichloroethane ND 0.0014 mg/kg
79-01-6 Trichloroethylene ND 0.0014 mg/kg
75-69-4 Trichlorofluoromethane ND 0.0014 mg/kg
96-18-4 1,2,3-Trichloropropane ND 0.0069 mg/kg
95-63-6 1,2,4-Trimethylbenzene 0.0498 0.0069 mg/kg
108-67-8 1,3,5-Trimethylbenzene 0.0217 0.0069 mg/kg
108-05-4 Vinyl Acetate ND 0.0069 mg/kg
75-01-4 Vinyl Chloride ND 0.0014 mg/kg
m,p-Xylene 0.0265 0.0027 mg/kg
95-47-6 o-Xylene 0.0199 0.0014 mg/kg
1330-20-7 Xylene (total)0.0464 0.0027 mg/kg
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 105%59-143%
ND = Not detected 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 63
LA6574633.2
SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:SMW-1B
Lab Sample ID:LA65746-2 Date Sampled:08/04/20
Matrix:SO - Soil Date Received:08/06/20
Method:SW846 8260D SW846 5035 Percent Solids:71.4
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
VOA List for NC
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
2037-26-5 Toluene-D8 102%52-159%
460-00-4 4-Bromofluorobenzene 99%38-183%
ND = Not detected 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 63
LA6574633.2
SGS North America Inc.
Report of Analysis Page 1 of 1
Client Sample ID:SMW-1B
Lab Sample ID:LA65746-2 Date Sampled:08/04/20
Matrix:SO - Soil Date Received:08/06/20
Method:MADEP VPH REV 2.1 Percent Solids:71.4
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 LE374585.D 1 08/12/20 02:55 NN n/a n/a GLE2109
Run #2
Initial Weight Final Volume Methanol Aliquot
Run #1 5.3 g 5.0 ml 100 ul
Run #2
MA VPH list
CAS No.Compound Result RL Units Q
C5- C8 Aliphatics (Unadj.)ND 8.6 mg/kg
C9- C12 Aliphatics (Unadj.)ND 8.6 mg/kg
C9- C10 Aromatics (Unadj.)ND 8.6 mg/kg
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
615-59-8 2,5-Dibromotoluene 97.1%70-130%
615-59-8 2,5-Dibromotoluene 88.5%70-130%
ND = Not detected 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 63
LA6574633.2
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:MW-1
Lab Sample ID:LA65746-3 Date Sampled:08/05/20
Matrix:AQ - Ground Water Date Received:08/06/20
Method:SM 6200B Percent Solids:n/a
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 2K0129508.D 20 08/12/20 13:41 CP n/a n/a V2K2584
Run #2 2K0129494.D 50 08/11/20 16:06 CP n/a n/a V2K2582
Purge Volume
Run #1 25.0 ml
Run #2 25.0 ml
VOA Special List
CAS No.Compound Result RL Units Q
67-64-1 Acetone ND 200 ug/l
71-43-2 Benzene 146 10 ug/l
108-86-1 Bromobenzene ND 10 ug/l
74-97-5 Bromochloromethane ND 10 ug/l
75-27-4 Bromodichloromethane 303 10 ug/l
75-25-2 Bromoform 145 10 ug/l
104-51-8 n-Butylbenzene 38.1 10 ug/l
135-98-8 sec-Butylbenzene 17.4 10 ug/l
98-06-6 tert-Butylbenzene ND 10 ug/l
56-23-5 Carbon Tetrachloride 104 4.0 ug/l
108-90-7 Chlorobenzene ND 10 ug/l
75-00-3 Chloroethane ND 10 ug/l
67-66-3 Chloroform 2100 a 25 ug/l
95-49-8 o-Chlorotoluene ND 10 ug/l
106-43-4 p-Chlorotoluene ND 10 ug/l
124-48-1 Dibromochloromethane 205 4.0 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 10 ug/l
106-93-4 1,2-Dibromoethane ND 10 ug/l
75-71-8 Dichlorodifluoromethane ND 10 ug/l
541-73-1 m-Dichlorobenzene ND 10 ug/l
95-50-1 o-Dichlorobenzene ND 10 ug/l
106-46-7 p-Dichlorobenzene ND 10 ug/l
75-34-3 1,1-Dichloroethane ND 10 ug/l
107-06-2 1,2-Dichloroethane ND 4.0 ug/l
75-35-4 1,1-Dichloroethylene ND 10 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 10 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 10 ug/l
78-87-5 1,2-Dichloropropane ND 6.0 ug/l
142-28-9 1,3-Dichloropropane ND 10 ug/l
594-20-7 2,2-Dichloropropane ND 10 ug/l
563-58-6 1,1-Dichloropropene ND 10 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 4.0 ug/l
ND = Not detected 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 63
LA6574633.3
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:MW-1
Lab Sample ID:LA65746-3 Date Sampled:08/05/20
Matrix:AQ - Ground Water Date Received:08/06/20
Method:SM 6200B Percent Solids:n/a
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
VOA Special List
CAS No.Compound Result RL Units Q
10061-02-6 trans-1,3-Dichloropropene ND 4.0 ug/l
108-20-3 Di-Isopropyl Ether ND 10 ug/l
64-17-5 Ethyl Alcohol ND 1000 ug/l
100-41-4 Ethylbenzene 646 10 ug/l
637-92-3 Ethyl Tert-Butyl Ether ND 10 ug/l
591-78-6 2-Hexanone ND 20 ug/l
87-68-3 Hexachlorobutadiene ND 4.0 ug/l
98-82-8 Isopropylbenzene 61.5 10 ug/l
99-87-6 p-Isopropyltoluene 12.4 10 ug/l
74-83-9 Methyl Bromide ND 10 ug/l
74-87-3 Methyl Chloride ND 10 ug/l
74-95-3 Methylene Bromide 11.9 10 ug/l
75-09-2 Methylene Chloride ND 10 ug/l
78-93-3 Methyl Ethyl Ketone ND 500 ug/l
108-10-1 4-Methyl-2-pentanone ND 10 ug/l
1634-04-4 Methyl Tert Butyl Ether 67.7 10 ug/l
91-20-3 Naphthalene 231 10 ug/l
103-65-1 n-Propylbenzene 252 10 ug/l
100-42-5 Styrene ND 10 ug/l
75-85-4 Tert-Amyl Alcohol 2380 500 ug/l
994-05-8 Tert-Amyl Methyl Ether ND 20 ug/l
75-65-0 Tert-Butyl Alcohol 454 200 ug/l
762-75-4 tert-Butyl Formate ND 100 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 10 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 4.0 ug/l
127-18-4 Tetrachloroethylene 33.6 10 ug/l
108-88-3 Toluene 447 10 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 10 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 10 ug/l
71-55-6 1,1,1-Trichloroethane ND 10 ug/l
79-00-5 1,1,2-Trichloroethane ND 6.0 ug/l
79-01-6 Trichloroethylene ND 10 ug/l
75-69-4 Trichlorofluoromethane ND 10 ug/l
96-18-4 1,2,3-Trichloropropane ND 10 ug/l
95-63-6 1,2,4-Trimethylbenzene 1800 10 ug/l
108-67-8 1,3,5-Trimethylbenzene 676 10 ug/l
108-05-4 Vinyl Acetate ND 10 ug/l
75-01-4 Vinyl Chloride ND 2.0 ug/l
m,p-Xylene 2100 20 ug/l
95-47-6 o-Xylene 907 10 ug/l
ND = Not detected 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 63
LA6574633.3
SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:MW-1
Lab Sample ID:LA65746-3 Date Sampled:08/05/20
Matrix:AQ - Ground Water Date Received:08/06/20
Method:SM 6200B Percent Solids:n/a
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
VOA Special List
CAS No.Compound Result RL Units Q
1330-20-7 Xylene (total)3000 10 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 94%97%70-130%
2037-26-5 Toluene-D8 95%97%70-130%
460-00-4 4-Bromofluorobenzene 101%97%70-130%
(a) Result is from Run# 2
ND = Not detected J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
17 of 63
LA6574633.3
SGS North America Inc.
Report of Analysis Page 1 of 1
Client Sample ID:MW-1
Lab Sample ID:LA65746-3 Date Sampled:08/05/20
Matrix:AQ - Ground Water Date Received:08/06/20
Method:EPA 504.1 EPA 504 Percent Solids:n/a
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 LI130419.D 1 08/12/20 22:21 PC 08/12/20 14:20 OP17210 GLI1019
Run #2
Initial Volume Final Volume
Run #1 34.9 ml 2.0 ml
Run #2
CAS No.Compound Result RL Units Q
106-93-4 1,2-Dibromoethane ND 0.020 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
348-51-6 1-Chloro-2-fluorobenzene 78%70-130%
ND = Not detected 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 63
LA6574633.3
SGS North America Inc.
Report of Analysis Page 1 of 1
Client Sample ID:MW-1
Lab Sample ID:LA65746-3 Date Sampled:08/05/20
Matrix:AQ - Ground Water Date Received:08/06/20
Method:MADEP VPH REV 2.1 Percent Solids:n/a
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 LE374558.D 1 08/07/20 19:05 NN n/a n/a GLE2107
Run #2 LE374557.D 50 08/07/20 18:33 NN n/a n/a GLE2107
Purge Volume
Run #1 5.0 ml
Run #2 5.0 ml
MA VPH list
CAS No.Compound Result RL Units Q
C5- C8 Aliphatics (Unadj.)3090 100 ug/l
C9- C12 Aliphatics (Unadj.)19800 a 5000 ug/l
C9- C10 Aromatics (Unadj.)7470 a 5000 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
615-59-8 2,5-Dibromotoluene 80% b 98% b 70-130%
615-59-8 2,5-Dibromotoluene 118% c 98% c 70-130%
(a) Result is from Run# 2
(b) Recovery from Aliphatics fraction.
(c) Recovery from Aromatics fraction.
ND = Not detected 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 63
LA6574633.3
SGS North America Inc.
Report of Analysis Page 1 of 1
Client Sample ID:MW-1
Lab Sample ID:LA65746-3 Date Sampled:08/05/20
Matrix:AQ - Ground Water Date Received:08/06/20
Percent Solids:n/a
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
Total Metals Analysis
Analyte Result RL Units DF Prep Analyzed By Method Prep Method
Lead <5.0 5.0 ug/l 1 08/10/20 08/10/20 RT SW846 6020B 1 SW846 3010A 2
(1) Instrument QC Batch: MA19613
(2) Prep QC Batch: MP19136
RL = Reporting Limit
20 of 63
LA6574633.3
SGS North America Inc.
Misc. Forms
Custody Documents and Other Forms
Includes the following where applicable:
• Chain of Custody
Scott, LA
Section 4
21 of 63
LA657464
LA65746: Chain of Custody
Page 1 of 3
22 of 63
LA6574644.1
LA65746: Chain of Custody
Page 2 of 3
23 of 63
LA6574644.1
SGS Sample Receipt Summary
Job Number:LA65746 Client:ATC
Date / Time Received:8/6/2020 8:40:00 AM Delivery Method:FedEx
Project:CIRCLE K 4132
4. No. Coolers:1
Airbill #'s:4913 8691 6871
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:
DV441;
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: (1.4/1.4); DV441
LA65746: Chain of Custody
Page 3 of 3
24 of 63
LA6574644.1
SGS North America Inc.
MS Volatiles
QC Data Summaries
Includes the following where applicable:
• Method Blank Summaries
• Blank Spike Summaries
• Matrix Spike and Duplicate Summaries
Scott, LA
Section 5
25 of 63
LA657465
Method Blank Summary Page 1 of 1
Job Number:LA65746
Account:ATCNCR ATC Group Services LLC
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K2582-MB1 2K0129486.D 1 08/11/20 CP n/a n/a V2K2582
The QC reported here applies to the following samples:Method: SM 6200B
LA65746-3
CAS No.Compound Result RL Units Q
67-66-3 Chloroform ND 0.50 ug/l
CAS No.Surrogate Recoveries Limits
17060-07-0 1,2-Dichloroethane-D4 98%70-130%
2037-26-5 Toluene-D8 96%70-130%
460-00-4 4-Bromofluorobenzene 96%70-130%
26 of 63
LA6574655.1.1
Method Blank Summary Page 1 of 3
Job Number:LA65746
Account:ATCNCR ATC Group Services LLC
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K2584-MB1 2K0129506.D 1 08/12/20 CP n/a n/a V2K2584
The QC reported here applies to the following samples:Method: SM 6200B
LA65746-3
CAS No.Compound Result RL Units Q
67-64-1 Acetone 1.7 10 ug/l J
71-43-2 Benzene ND 0.50 ug/l
108-86-1 Bromobenzene ND 0.50 ug/l
74-97-5 Bromochloromethane ND 0.50 ug/l
75-27-4 Bromodichloromethane ND 0.50 ug/l
75-25-2 Bromoform ND 0.50 ug/l
104-51-8 n-Butylbenzene ND 0.50 ug/l
135-98-8 sec-Butylbenzene ND 0.50 ug/l
98-06-6 tert-Butylbenzene ND 0.50 ug/l
56-23-5 Carbon Tetrachloride ND 0.20 ug/l
108-90-7 Chlorobenzene ND 0.50 ug/l
75-00-3 Chloroethane ND 0.50 ug/l
95-49-8 o-Chlorotoluene ND 0.50 ug/l
106-43-4 p-Chlorotoluene ND 0.50 ug/l
124-48-1 Dibromochloromethane ND 0.20 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 ug/l
106-93-4 1,2-Dibromoethane ND 0.50 ug/l
75-71-8 Dichlorodifluoromethane ND 0.50 ug/l
541-73-1 m-Dichlorobenzene ND 0.50 ug/l
95-50-1 o-Dichlorobenzene ND 0.50 ug/l
106-46-7 p-Dichlorobenzene ND 0.50 ug/l
75-34-3 1,1-Dichloroethane ND 0.50 ug/l
107-06-2 1,2-Dichloroethane ND 0.20 ug/l
75-35-4 1,1-Dichloroethylene ND 0.50 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 0.50 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 0.50 ug/l
78-87-5 1,2-Dichloropropane ND 0.30 ug/l
142-28-9 1,3-Dichloropropane ND 0.50 ug/l
594-20-7 2,2-Dichloropropane ND 0.50 ug/l
563-58-6 1,1-Dichloropropene ND 0.50 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 0.20 ug/l
10061-02-6 trans-1,3-Dichloropropene ND 0.20 ug/l
108-20-3 Di-Isopropyl Ether ND 0.50 ug/l
64-17-5 Ethyl Alcohol ND 50 ug/l
100-41-4 Ethylbenzene ND 0.50 ug/l
637-92-3 Ethyl Tert-Butyl Ether 0.16 0.50 ug/l J
27 of 63
LA6574655.1.2
Method Blank Summary Page 2 of 3
Job Number:LA65746
Account:ATCNCR ATC Group Services LLC
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K2584-MB1 2K0129506.D 1 08/12/20 CP n/a n/a V2K2584
The QC reported here applies to the following samples:Method: SM 6200B
LA65746-3
CAS No.Compound Result RL Units Q
591-78-6 2-Hexanone ND 1.0 ug/l
87-68-3 Hexachlorobutadiene ND 0.20 ug/l
98-82-8 Isopropylbenzene ND 0.50 ug/l
99-87-6 p-Isopropyltoluene ND 0.50 ug/l
74-83-9 Methyl Bromide ND 0.50 ug/l
74-87-3 Methyl Chloride ND 0.50 ug/l
74-95-3 Methylene Bromide ND 0.50 ug/l
75-09-2 Methylene Chloride 0.20 0.50 ug/l J
78-93-3 Methyl Ethyl Ketone ND 25 ug/l
108-10-1 4-Methyl-2-pentanone ND 0.50 ug/l
1634-04-4 Methyl Tert Butyl Ether ND 0.50 ug/l
91-20-3 Naphthalene ND 0.50 ug/l
103-65-1 n-Propylbenzene ND 0.50 ug/l
100-42-5 Styrene ND 0.50 ug/l
75-85-4 Tert-Amyl Alcohol ND 25 ug/l
994-05-8 Tert-Amyl Methyl Ether ND 1.0 ug/l
75-65-0 Tert-Butyl Alcohol ND 10 ug/l
762-75-4 tert-Butyl Formate ND 5.0 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 ug/l
127-18-4 Tetrachloroethylene ND 0.50 ug/l
108-88-3 Toluene ND 0.50 ug/l
87-61-6 1,2,3-Trichlorobenzene 0.17 0.50 ug/l J
120-82-1 1,2,4-Trichlorobenzene ND 0.50 ug/l
71-55-6 1,1,1-Trichloroethane ND 0.50 ug/l
79-00-5 1,1,2-Trichloroethane ND 0.30 ug/l
79-01-6 Trichloroethylene ND 0.50 ug/l
75-69-4 Trichlorofluoromethane ND 0.50 ug/l
96-18-4 1,2,3-Trichloropropane ND 0.50 ug/l
95-63-6 1,2,4-Trimethylbenzene ND 0.50 ug/l
108-67-8 1,3,5-Trimethylbenzene ND 0.50 ug/l
108-05-4 Vinyl Acetate ND 0.50 ug/l
75-01-4 Vinyl Chloride ND 0.10 ug/l
m,p-Xylene ND 1.0 ug/l
95-47-6 o-Xylene ND 0.50 ug/l
1330-20-7 Xylene (total)ND 0.50 ug/l
28 of 63
LA6574655.1.2
Method Blank Summary Page 3 of 3
Job Number:LA65746
Account:ATCNCR ATC Group Services LLC
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K2584-MB1 2K0129506.D 1 08/12/20 CP n/a n/a V2K2584
The QC reported here applies to the following samples:Method: SM 6200B
LA65746-3
CAS No.Surrogate Recoveries Limits
17060-07-0 1,2-Dichloroethane-D4 96%70-130%
2037-26-5 Toluene-D8 96%70-130%
460-00-4 4-Bromofluorobenzene 96%70-130%
29 of 63
LA6574655.1.2
Method Blank Summary Page 1 of 3
Job Number:LA65746
Account:ATCNCR ATC Group Services LLC
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2H2630-MB1 2H0066780.D 1 08/12/20 CP n/a n/a V2H2630
The QC reported here applies to the following samples:Method: SW846 8260D
LA65746-1, LA65746-2
CAS No.Compound Result RL Units Q
67-64-1 Acetone 6.8 50 ug/kg J
71-43-2 Benzene ND 0.50 ug/kg
108-86-1 Bromobenzene ND 1.0 ug/kg
74-97-5 Bromochloromethane ND 1.0 ug/kg
75-27-4 Bromodichloromethane ND 1.0 ug/kg
75-25-2 Bromoform ND 1.0 ug/kg
104-51-8 n-Butylbenzene ND 5.0 ug/kg
135-98-8 sec-Butylbenzene ND 5.0 ug/kg
98-06-6 tert-Butylbenzene ND 1.0 ug/kg
56-23-5 Carbon Tetrachloride ND 1.0 ug/kg
108-90-7 Chlorobenzene ND 1.0 ug/kg
75-00-3 Chloroethane ND 1.0 ug/kg
67-66-3 Chloroform ND 1.0 ug/kg
95-49-8 o-Chlorotoluene ND 5.0 ug/kg
106-43-4 p-Chlorotoluene ND 5.0 ug/kg
124-48-1 Dibromochloromethane ND 1.0 ug/kg
96-12-8 1,2-Dibromo-3-chloropropane ND 5.0 ug/kg
106-93-4 1,2-Dibromoethane ND 1.0 ug/kg
75-71-8 Dichlorodifluoromethane ND 1.0 ug/kg
541-73-1 m-Dichlorobenzene ND 1.0 ug/kg
95-50-1 o-Dichlorobenzene 0.27 1.0 ug/kg J
106-46-7 p-Dichlorobenzene ND 1.0 ug/kg
75-34-3 1,1-Dichloroethane ND 1.0 ug/kg
107-06-2 1,2-Dichloroethane 0.32 1.0 ug/kg J
75-35-4 1,1-Dichloroethylene ND 1.0 ug/kg
156-59-2 cis-1,2-Dichloroethylene ND 1.0 ug/kg
156-60-5 trans-1,2-Dichloroethylene ND 1.0 ug/kg
78-87-5 1,2-Dichloropropane ND 1.0 ug/kg
142-28-9 1,3-Dichloropropane ND 1.0 ug/kg
594-20-7 2,2-Dichloropropane ND 1.0 ug/kg
563-58-6 1,1-Dichloropropene ND 1.0 ug/kg
10061-01-5 cis-1,3-Dichloropropene ND 1.0 ug/kg
10061-02-6 trans-1,3-Dichloropropene ND 1.0 ug/kg
108-20-3 Di-Isopropyl Ether ND 1.0 ug/kg
64-17-5 Ethyl Alcohol ND 400 ug/kg
100-41-4 Ethylbenzene ND 1.0 ug/kg
30 of 63
LA6574655.1.3
Method Blank Summary Page 2 of 3
Job Number:LA65746
Account:ATCNCR ATC Group Services LLC
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2H2630-MB1 2H0066780.D 1 08/12/20 CP n/a n/a V2H2630
The QC reported here applies to the following samples:Method: SW846 8260D
LA65746-1, LA65746-2
CAS No.Compound Result RL Units Q
591-78-6 2-Hexanone 1.2 13 ug/kg J
87-68-3 Hexachlorobutadiene 0.39 5.0 ug/kg J
98-82-8 Isopropylbenzene ND 5.0 ug/kg
99-87-6 p-Isopropyltoluene ND 5.0 ug/kg
74-83-9 Methyl Bromide ND 10 ug/kg
74-87-3 Methyl Chloride ND 5.0 ug/kg
74-95-3 Methylene Bromide ND 1.0 ug/kg
75-09-2 Methylene Chloride 2.7 5.0 ug/kg J
78-93-3 Methyl Ethyl Ketone ND 13 ug/kg
108-10-1 4-Methyl-2-pentanone 0.59 13 ug/kg J
1634-04-4 Methyl Tert Butyl Ether ND 1.0 ug/kg
91-20-3 Naphthalene 0.70 5.0 ug/kg J
103-65-1 n-Propylbenzene ND 5.0 ug/kg
100-42-5 Styrene 0.17 1.0 ug/kg J
630-20-6 1,1,1,2-Tetrachloroethane ND 1.0 ug/kg
79-34-5 1,1,2,2-Tetrachloroethane ND 1.0 ug/kg
127-18-4 Tetrachloroethylene ND 1.0 ug/kg
108-88-3 Toluene ND 5.0 ug/kg
87-61-6 1,2,3-Trichlorobenzene 0.48 5.0 ug/kg J
120-82-1 1,2,4-Trichlorobenzene 0.57 5.0 ug/kg J
71-55-6 1,1,1-Trichloroethane ND 1.0 ug/kg
79-00-5 1,1,2-Trichloroethane ND 1.0 ug/kg
79-01-6 Trichloroethylene ND 1.0 ug/kg
75-69-4 Trichlorofluoromethane ND 1.0 ug/kg
96-18-4 1,2,3-Trichloropropane ND 5.0 ug/kg
95-63-6 1,2,4-Trimethylbenzene ND 5.0 ug/kg
108-67-8 1,3,5-Trimethylbenzene ND 5.0 ug/kg
108-05-4 Vinyl Acetate ND 5.0 ug/kg
75-01-4 Vinyl Chloride ND 1.0 ug/kg
m,p-Xylene ND 2.0 ug/kg
95-47-6 o-Xylene ND 1.0 ug/kg
1330-20-7 Xylene (total)ND 2.0 ug/kg
31 of 63
LA6574655.1.3
Method Blank Summary Page 3 of 3
Job Number:LA65746
Account:ATCNCR ATC Group Services LLC
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2H2630-MB1 2H0066780.D 1 08/12/20 CP n/a n/a V2H2630
The QC reported here applies to the following samples:Method: SW846 8260D
LA65746-1, LA65746-2
CAS No.Surrogate Recoveries Limits
17060-07-0 1,2-Dichloroethane-D4 101%59-143%
2037-26-5 Toluene-D8 101%52-159%
460-00-4 4-Bromofluorobenzene 103%38-183%
CAS No.Tentatively Identified Compounds R.T.Est. Conc.Units Q
Unknown siloxane 6.28 20 ug/kg J
Unknown siloxane 7.75 11 ug/kg J
Total TIC, Volatile 31 ug/kg J
32 of 63
LA6574655.1.3
Blank Spike/Blank Spike Duplicate Summary Page 1 of 1
Job Number:LA65746
Account:ATCNCR ATC Group Services LLC
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K2582-BS1 2K0129483.D 1 08/11/20 CP n/a n/a V2K2582
V2K2582-BSD1 2K0129484.D 1 08/11/20 CP n/a n/a V2K2582
The QC reported here applies to the following samples:Method: SM 6200B
LA65746-3
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD
67-66-3 Chloroform 20 21.0 105 22.5 113 7 70-130/30
CAS No.Surrogate Recoveries BSP BSD Limits
17060-07-0 1,2-Dichloroethane-D4 101%100%70-130%
2037-26-5 Toluene-D8 99%103%70-130%
460-00-4 4-Bromofluorobenzene 101%101%70-130%
* = Outside of Control Limits.
33 of 63
LA6574655.2.1
Blank Spike/Blank Spike Duplicate Summary Page 1 of 3
Job Number:LA65746
Account:ATCNCR ATC Group Services LLC
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K2584-BS1 2K0129503.D 1 08/12/20 CP n/a n/a V2K2584
V2K2584-BSD1 2K0129504.D 1 08/12/20 CP n/a n/a V2K2584
The QC reported here applies to the following samples:Method: SM 6200B
LA65746-3
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD
67-64-1 Acetone 50 40.4 81 41.3 83 2 70-130/30
71-43-2 Benzene 20 19.7 99 20.3 102 3 70-130/30
108-86-1 Bromobenzene 20 19.9 100 21.1 106 6 70-130/30
74-97-5 Bromochloromethane 20 18.4 92 19.4 97 5 70-130/30
75-27-4 Bromodichloromethane 20 22.1 111 22.9 115 4 70-130/30
75-25-2 Bromoform 20 18.6 93 19.2 96 3 70-130/30
104-51-8 n-Butylbenzene 20 22.9 115 23.6 118 3 70-130/30
135-98-8 sec-Butylbenzene 20 22.2 111 23.0 115 4 70-130/30
98-06-6 tert-Butylbenzene 20 20.8 104 21.6 108 4 70-130/30
56-23-5 Carbon Tetrachloride 20 17.7 89 19.2 96 8 70-130/30
108-90-7 Chlorobenzene 20 20.1 101 20.5 103 2 70-130/30
75-00-3 Chloroethane 20 18.9 95 19.2 96 2 60-140/30
95-49-8 o-Chlorotoluene 20 20.6 103 21.4 107 4 70-130/30
106-43-4 p-Chlorotoluene 20 21.0 105 21.8 109 4 70-130/30
124-48-1 Dibromochloromethane 20 22.7 114 23.6 118 4 70-130/30
96-12-8 1,2-Dibromo-3-chloropropane 20 23.1 116 23.7 119 3 70-130/30
106-93-4 1,2-Dibromoethane 20 20.6 103 20.7 104 0 70-130/30
75-71-8 Dichlorodifluoromethane 20 16.6 83 17.0 85 2 60-140/30
541-73-1 m-Dichlorobenzene 20 20.6 103 20.9 105 1 70-130/30
95-50-1 o-Dichlorobenzene 20 20.1 101 20.6 103 2 70-130/30
106-46-7 p-Dichlorobenzene 20 20.3 102 20.8 104 2 70-130/30
75-34-3 1,1-Dichloroethane 20 18.4 92 19.7 99 7 70-130/30
107-06-2 1,2-Dichloroethane 20 18.7 94 18.9 95 1 70-130/30
75-35-4 1,1-Dichloroethylene 20 18.5 93 19.9 100 7 70-130/30
156-59-2 cis-1,2-Dichloroethylene 20 18.9 95 20.1 101 6 70-130/30
156-60-5 trans-1,2-Dichloroethylene 20 18.4 92 19.5 98 6 70-130/30
78-87-5 1,2-Dichloropropane 20 19.4 97 20.2 101 4 70-130/30
142-28-9 1,3-Dichloropropane 20 19.9 100 20.4 102 2 70-130/30
594-20-7 2,2-Dichloropropane 20 20.6 103 22.2 111 7 70-130/30
563-58-6 1,1-Dichloropropene 20 18.9 95 20.1 101 6 70-130/30
10061-01-5 cis-1,3-Dichloropropene 20 22.7 114 23.3 117 3 70-130/30
10061-02-6 trans-1,3-Dichloropropene 20 23.2 116 23.6 118 2 70-130/30
108-20-3 Di-Isopropyl Ether 20 19.1 96 20.3 102 6 70-130/30
64-17-5 Ethyl Alcohol 400 387 97 408 102 5 70-130/30
100-41-4 Ethylbenzene 20 20.3 102 21.0 105 3 70-130/30
637-92-3 Ethyl Tert-Butyl Ether 20 20.3 102 21.8 109 7 70-130/30
* = Outside of Control Limits.
34 of 63
LA6574655.2.2
Blank Spike/Blank Spike Duplicate Summary Page 2 of 3
Job Number:LA65746
Account:ATCNCR ATC Group Services LLC
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K2584-BS1 2K0129503.D 1 08/12/20 CP n/a n/a V2K2584
V2K2584-BSD1 2K0129504.D 1 08/12/20 CP n/a n/a V2K2584
The QC reported here applies to the following samples:Method: SM 6200B
LA65746-3
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD
591-78-6 2-Hexanone 50 51.8 104 52.8 106 2 70-130/30
87-68-3 Hexachlorobutadiene 20 20.9 105 21.9 110 5 70-130/30
98-82-8 Isopropylbenzene 20 21.6 108 22.7 114 5 70-130/30
99-87-6 p-Isopropyltoluene 20 22.5 113 23.0 115 2 70-130/30
74-83-9 Methyl Bromide 20 21.9 110 23.5 118 7 60-140/30
74-87-3 Methyl Chloride 20 16.6 83 17.1 86 3 60-140/30
74-95-3 Methylene Bromide 20 19.6 98 19.8 99 1 70-130/30
75-09-2 Methylene Chloride 20 18.7 94 20.0 100 7 70-130/30
78-93-3 Methyl Ethyl Ketone 50 37.6 75 39.0 78 4 70-130/30
108-10-1 4-Methyl-2-pentanone 50 56.4 113 57.3 115 2 70-130/30
1634-04-4 Methyl Tert Butyl Ether 20 19.8 99 20.8 104 5 70-130/30
91-20-3 Naphthalene 20 23.3 117 23.8 119 2 70-130/30
103-65-1 n-Propylbenzene 20 21.1 106 21.8 109 3 70-130/30
100-42-5 Styrene 20 22.0 110 22.8 114 4 70-130/30
75-85-4 Tert-Amyl Alcohol 200 187 94 193 97 3 50-150/30 a
994-05-8 Tert-Amyl Methyl Ether 20 21.0 105 21.9 110 4 70-130/30
75-65-0 Tert-Butyl Alcohol 100 88.8 89 92.4 92 4 70-130/30
762-75-4 tert-Butyl Formate 20 16.7 84 18.0 90 7 50-150/30 a
630-20-6 1,1,1,2-Tetrachloroethane 20 22.1 111 22.6 113 2 70-130/30
79-34-5 1,1,2,2-Tetrachloroethane 20 20.7 104 20.7 104 0 70-130/30
127-18-4 Tetrachloroethylene 20 20.3 102 20.7 104 2 70-130/30
108-88-3 Toluene 20 19.8 99 20.5 103 3 70-130/30
87-61-6 1,2,3-Trichlorobenzene 20 21.6 108 21.7 109 0 70-130/30
120-82-1 1,2,4-Trichlorobenzene 20 21.4 107 22.0 110 3 70-130/30
71-55-6 1,1,1-Trichloroethane 20 19.3 97 20.8 104 7 70-130/30
79-00-5 1,1,2-Trichloroethane 20 19.3 97 20.4 102 6 70-130/30
79-01-6 Trichloroethylene 20 19.8 99 20.7 104 4 70-130/30
75-69-4 Trichlorofluoromethane 20 17.8 89 18.1 91 2 60-140/30
96-18-4 1,2,3-Trichloropropane 20 20.2 101 20.5 103 1 70-130/30
95-63-6 1,2,4-Trimethylbenzene 20 21.7 109 22.5 113 4 70-130/30
108-67-8 1,3,5-Trimethylbenzene 20 21.9 110 22.5 113 3 70-130/30
108-05-4 Vinyl Acetate 20 22.2 111 23.3 117 5 70-130/30
75-01-4 Vinyl Chloride 20 18.2 91 18.8 94 3 60-140/30
m,p-Xylene 40 44.0 110 46.1 115 5 70-130/30
95-47-6 o-Xylene 20 21.7 109 22.5 113 4 70-130/30
1330-20-7 Xylene (total)60 65.8 110 68.6 114 4 70-130/30
* = Outside of Control Limits.
35 of 63
LA6574655.2.2
Blank Spike/Blank Spike Duplicate Summary Page 3 of 3
Job Number:LA65746
Account:ATCNCR ATC Group Services LLC
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K2584-BS1 2K0129503.D 1 08/12/20 CP n/a n/a V2K2584
V2K2584-BSD1 2K0129504.D 1 08/12/20 CP n/a n/a V2K2584
The QC reported here applies to the following samples:Method: SM 6200B
LA65746-3
CAS No.Surrogate Recoveries BSP BSD Limits
17060-07-0 1,2-Dichloroethane-D4 92%94%70-130%
2037-26-5 Toluene-D8 101%98%70-130%
460-00-4 4-Bromofluorobenzene 103%103%70-130%
(a) Advisory control limits.
* = Outside of Control Limits.
36 of 63
LA6574655.2.2
Blank Spike/Blank Spike Duplicate Summary Page 1 of 3
Job Number:LA65746
Account:ATCNCR ATC Group Services LLC
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2H2630-BS1 2H0066778.D 1 08/12/20 CP n/a n/a V2H2630
V2H2630-BSD1 2H0066779.D 1 08/12/20 CP n/a n/a V2H2630
The QC reported here applies to the following samples:Method: SW846 8260D
LA65746-1, LA65746-2
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/kg ug/kg %ug/kg %RPD Rec/RPD
67-64-1 Acetone 50 52.9 106 55.0 110 4 40-153/30
71-43-2 Benzene 20 21.4 107 19.7 99 8 67-135/30
108-86-1 Bromobenzene 20 20.3 102 20.0 100 1 54-144/30
74-97-5 Bromochloromethane 20 20.6 103 20.6 103 0 50-147/30
75-27-4 Bromodichloromethane 20 20.7 104 20.3 102 2 54-146/30
75-25-2 Bromoform 20 16.2 81 16.0 80 1 49-145/30
104-51-8 n-Butylbenzene 20 20.5 103 18.5 93 10 47-160/30
135-98-8 sec-Butylbenzene 20 20.1 101 17.4 87 14 51-155/30
98-06-6 tert-Butylbenzene 20 22.7 114 19.9 100 13 53-152/30
56-23-5 Carbon Tetrachloride 20 21.1 106 18.0 90 16 50-152/30
108-90-7 Chlorobenzene 20 21.9 110 20.1 101 9 57-144/30
75-00-3 Chloroethane 20 19.2 96 18.2 91 5 38-176/30
67-66-3 Chloroform 20 20.7 104 18.7 94 10 53-147/30
95-49-8 o-Chlorotoluene 20 21.9 110 20.3 102 8 52-151/30
106-43-4 p-Chlorotoluene 20 22.9 115 20.6 103 11 52-150/30
124-48-1 Dibromochloromethane 20 20.0 100 20.0 100 0 54-146/30
96-12-8 1,2-Dibromo-3-chloropropane 20 20.0 100 22.1 111 10 51-145/30
106-93-4 1,2-Dibromoethane 20 20.9 105 21.5 108 3 55-145/30
75-71-8 Dichlorodifluoromethane 20 19.3 97 16.1 81 18 24-179/30
541-73-1 m-Dichlorobenzene 20 22.4 112 21.2 106 6 54-147/30
95-50-1 o-Dichlorobenzene 20 22.5 113 21.0 105 7 55-144/30
106-46-7 p-Dichlorobenzene 20 22.8 114 20.8 104 9 54-147/30
75-34-3 1,1-Dichloroethane 20 20.5 103 19.4 97 6 53-148/30
107-06-2 1,2-Dichloroethane 20 19.6 98 19.0 95 3 55-144/30
75-35-4 1,1-Dichloroethylene 20 20.0 100 17.1 86 16 49-153/30
156-59-2 cis-1,2-Dichloroethylene 20 21.1 106 19.4 97 8 52-147/30
156-60-5 trans-1,2-Dichloroethylene 20 20.7 104 18.2 91 13 51-152/30
78-87-5 1,2-Dichloropropane 20 20.1 101 19.6 98 3 56-145/30
142-28-9 1,3-Dichloropropane 20 20.2 101 20.1 101 0 53-145/30
594-20-7 2,2-Dichloropropane 20 21.4 107 19.0 95 12 35-176/30
563-58-6 1,1-Dichloropropene 20 21.4 107 18.6 93 14 49-157/30
10061-01-5 cis-1,3-Dichloropropene 20 20.9 105 19.9 100 5 54-148/30
10061-02-6 trans-1,3-Dichloropropene 20 20.9 105 20.9 105 0 53-151/30
108-20-3 Di-Isopropyl Ether 20 21.6 108 20.5 103 5 85-120/30
64-17-5 Ethyl Alcohol 400 472 118 493 123 4 31-164/30
100-41-4 Ethylbenzene 20 21.8 109 19.8 99 10 69-136/30
* = Outside of Control Limits.
37 of 63
LA6574655.2.3
Blank Spike/Blank Spike Duplicate Summary Page 2 of 3
Job Number:LA65746
Account:ATCNCR ATC Group Services LLC
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2H2630-BS1 2H0066778.D 1 08/12/20 CP n/a n/a V2H2630
V2H2630-BSD1 2H0066779.D 1 08/12/20 CP n/a n/a V2H2630
The QC reported here applies to the following samples:Method: SW846 8260D
LA65746-1, LA65746-2
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/kg ug/kg %ug/kg %RPD Rec/RPD
591-78-6 2-Hexanone 50 47.9 96 50.9 102 6 45-148/30
87-68-3 Hexachlorobutadiene 20 28.7 144 25.1 126 13 48-168/30
98-82-8 Isopropylbenzene 20 22.5 113 20.9 105 7 52-151/30
99-87-6 p-Isopropyltoluene 20 23.5 118 21.0 105 11 50-155/30
74-83-9 Methyl Bromide 20 22.3 112 19.9 100 11 40-170/30
74-87-3 Methyl Chloride 20 21.0 105 18.6 93 12 39-152/30
74-95-3 Methylene Bromide 20 19.4 97 20.5 103 6 53-147/30
75-09-2 Methylene Chloride 20 25.0 125 23.3 117 7 51-142/30
78-93-3 Methyl Ethyl Ketone 50 50.3 101 52.3 105 4 48-150/30
108-10-1 4-Methyl-2-pentanone 50 52.0 104 54.4 109 5 50-151/30
1634-04-4 Methyl Tert Butyl Ether 20 20.7 104 20.6 103 0 61-142/30
91-20-3 Naphthalene 20 21.7 109 21.3 107 2 58-147/30
103-65-1 n-Propylbenzene 20 23.4 117 20.7 104 12 50-154/30
100-42-5 Styrene 20 21.9 110 21.2 106 3 56-145/30
630-20-6 1,1,1,2-Tetrachloroethane 20 20.7 104 20.2 101 2 56-147/30
79-34-5 1,1,2,2-Tetrachloroethane 20 20.1 101 20.0 100 0 55-141/30
127-18-4 Tetrachloroethylene 20 20.8 104 18.8 94 10 54-156/30
108-88-3 Toluene 20 20.9 105 19.6 98 6 71-135/30
87-61-6 1,2,3-Trichlorobenzene 20 20.6 103 19.8 99 4 51-157/30
120-82-1 1,2,4-Trichlorobenzene 20 22.6 113 21.7 109 4 48-163/30
71-55-6 1,1,1-Trichloroethane 20 21.1 106 19.2 96 9 52-153/30
79-00-5 1,1,2-Trichloroethane 20 20.7 104 19.7 99 5 55-144/30
79-01-6 Trichloroethylene 20 20.8 104 19.2 96 8 56-151/30
75-69-4 Trichlorofluoromethane 20 21.3 107 18.7 94 13 36-171/30
96-18-4 1,2,3-Trichloropropane 20 20.6 103 21.4 107 4 45-139/30
95-63-6 1,2,4-Trimethylbenzene 20 22.9 115 21.2 106 8 50-153/30
108-67-8 1,3,5-Trimethylbenzene 20 22.8 114 21.2 106 7 51-153/30
108-05-4 Vinyl Acetate 20 22.8 114 21.7 109 5 23-188/30
75-01-4 Vinyl Chloride 20 21.8 109 18.3 92 17 42-155/30
m,p-Xylene 40 44.8 112 41.7 104 7 70-140/30
95-47-6 o-Xylene 20 22.1 111 20.5 103 8 70-132/30
1330-20-7 Xylene (total)60 66.9 112 62.2 104 7 69-138/30
* = Outside of Control Limits.
38 of 63
LA6574655.2.3
Blank Spike/Blank Spike Duplicate Summary Page 3 of 3
Job Number:LA65746
Account:ATCNCR ATC Group Services LLC
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2H2630-BS1 2H0066778.D 1 08/12/20 CP n/a n/a V2H2630
V2H2630-BSD1 2H0066779.D 1 08/12/20 CP n/a n/a V2H2630
The QC reported here applies to the following samples:Method: SW846 8260D
LA65746-1, LA65746-2
CAS No.Surrogate Recoveries BSP BSD Limits
17060-07-0 1,2-Dichloroethane-D4 103%104%59-143%
2037-26-5 Toluene-D8 101%101%52-159%
460-00-4 4-Bromofluorobenzene 101%104%38-183%
* = Outside of Control Limits.
39 of 63
LA6574655.2.3
Matrix Spike/Matrix Spike Duplicate Summary Page 1 of 1
Job Number:LA65746
Account:ATCNCR ATC Group Services LLC
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA65746-3MS 2K0129495.D 100 08/11/20 CP n/a n/a V2K2582
LA65746-3MSD 2K0129496.D 100 08/11/20 CP n/a n/a V2K2582
LA65746-3 2K0129494.D 50 08/11/20 CP n/a n/a V2K2582
The QC reported here applies to the following samples:Method: SM 6200B
LA65746-3
LA65746-3 Spike MS MS Spike MSD MSD Limits
CAS No.Compound ug/l Q ug/l ug/l %ug/l ug/l %RPD Rec/RPD
67-66-3 Chloroform 2100 2000 3710 81 2000 3400 65*9 70-130/20
CAS No.Surrogate Recoveries MS MSD LA65746-3 Limits
17060-07-0 1,2-Dichloroethane-D4 94%94%97%70-130%
2037-26-5 Toluene-D8 100%100%97%70-130%
460-00-4 4-Bromofluorobenzene 103%100%97%70-130%
* = Outside of Control Limits.
40 of 63
LA6574655.3.1
Matrix Spike/Matrix Spike Duplicate Summary Page 1 of 3
Job Number:LA65746
Account:ATCNCR ATC Group Services LLC
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA65771-1MS 2K0129510.D 10 08/12/20 CP n/a n/a V2K2584
LA65771-1MSD 2K0129511.D 10 08/12/20 CP n/a n/a V2K2584
LA65771-1 2K0129509.D 5 08/12/20 CP n/a n/a V2K2584
The QC reported here applies to the following samples:Method: SM 6200B
LA65746-3
LA65771-1 Spike MS MS Spike MSD MSD Limits
CAS No.Compound ug/l Q ug/l ug/l %ug/l ug/l %RPD Rec/RPD
67-64-1 Acetone ND 500 256 51*500 263 53*3 70-130/20
71-43-2 Benzene ND 200 203 102 200 189 95 7 70-130/20
108-86-1 Bromobenzene ND 200 206 103 200 193 97 7 70-130/20
74-97-5 Bromochloromethane ND 200 190 95 200 183 92 4 70-130/20
75-27-4 Bromodichloromethane ND 200 217 109 200 210 105 3 70-130/20
75-25-2 Bromoform ND 200 181 91 200 177 89 2 70-130/20
104-51-8 n-Butylbenzene ND 200 225 113 200 210 105 7 70-130/20
135-98-8 sec-Butylbenzene ND 200 224 112 200 210 105 6 70-130/20
98-06-6 tert-Butylbenzene ND 200 214 107 200 197 99 8 70-130/20
56-23-5 Carbon Tetrachloride ND 200 183 92 200 169 85 8 70-130/20
108-90-7 Chlorobenzene ND 200 201 101 200 188 94 7 70-130/20
75-00-3 Chloroethane ND 200 182 91 200 181 91 1 60-140/20
95-49-8 o-Chlorotoluene ND 200 211 106 200 201 101 5 70-130/20
106-43-4 p-Chlorotoluene ND 200 215 108 200 203 102 6 70-130/20
124-48-1 Dibromochloromethane ND 200 228 114 200 219 110 4 70-130/20
96-12-8 1,2-Dibromo-3-chloropropane ND 200 216 108 200 215 108 0 70-130/20
106-93-4 1,2-Dibromoethane ND 200 201 101 200 193 97 4 70-130/20
75-71-8 Dichlorodifluoromethane ND 200 161 81 200 154 77 4 60-140/20
541-73-1 m-Dichlorobenzene ND 200 208 104 200 196 98 6 70-130/20
95-50-1 o-Dichlorobenzene ND 200 203 102 200 196 98 4 70-130/20
106-46-7 p-Dichlorobenzene ND 200 208 104 200 196 98 6 70-130/20
75-34-3 1,1-Dichloroethane ND 200 193 97 200 182 91 6 70-130/20
107-06-2 1,2-Dichloroethane ND 200 186 93 200 176 88 6 70-130/20
75-35-4 1,1-Dichloroethylene ND 200 192 96 200 182 91 5 70-130/20
156-59-2 cis-1,2-Dichloroethylene ND 200 192 96 200 182 91 5 70-130/20
156-60-5 trans-1,2-Dichloroethylene ND 200 190 95 200 178 89 7 70-130/20
78-87-5 1,2-Dichloropropane ND 200 198 99 200 182 91 8 70-130/20
142-28-9 1,3-Dichloropropane ND 200 199 100 200 187 94 6 70-130/20
594-20-7 2,2-Dichloropropane ND 200 205 103 200 196 98 4 70-130/20
563-58-6 1,1-Dichloropropene ND 200 197 99 200 184 92 7 70-130/20
10061-01-5 cis-1,3-Dichloropropene ND 200 225 113 200 210 105 7 70-130/20
10061-02-6 trans-1,3-Dichloropropene ND 200 227 114 200 215 108 5 70-130/20
108-20-3 Di-Isopropyl Ether ND 200 198 99 200 184 92 7 70-130/20
64-17-5 Ethyl Alcohol ND 4000 3980 100 4000 4000 100 1 70-130/20
100-41-4 Ethylbenzene ND 200 208 104 200 192 96 8 70-130/20
637-92-3 Ethyl Tert-Butyl Ether ND 200 202 101 200 197 99 3 70-130/20
* = Outside of Control Limits.
41 of 63
LA6574655.3.2
Matrix Spike/Matrix Spike Duplicate Summary Page 2 of 3
Job Number:LA65746
Account:ATCNCR ATC Group Services LLC
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA65771-1MS 2K0129510.D 10 08/12/20 CP n/a n/a V2K2584
LA65771-1MSD 2K0129511.D 10 08/12/20 CP n/a n/a V2K2584
LA65771-1 2K0129509.D 5 08/12/20 CP n/a n/a V2K2584
The QC reported here applies to the following samples:Method: SM 6200B
LA65746-3
LA65771-1 Spike MS MS Spike MSD MSD Limits
CAS No.Compound ug/l Q ug/l ug/l %ug/l ug/l %RPD Rec/RPD
591-78-6 2-Hexanone ND 500 415 83 500 414 83 0 70-130/20
87-68-3 Hexachlorobutadiene ND 200 196 98 200 187 94 5 70-130/20
98-82-8 Isopropylbenzene ND 200 219 110 200 203 102 8 70-130/20
99-87-6 p-Isopropyltoluene ND 200 225 113 200 211 106 6 70-130/20
74-83-9 Methyl Bromide ND 200 182 91 200 186 93 2 60-140/20
74-87-3 Methyl Chloride ND 200 161 81 200 158 79 2 60-140/20
74-95-3 Methylene Bromide ND 200 196 98 200 184 92 6 70-130/20
75-09-2 Methylene Chloride ND 200 203 102 200 204 102 0 70-130/20
78-93-3 Methyl Ethyl Ketone ND 500 342 68*500 335 67*2 70-130/20
108-10-1 4-Methyl-2-pentanone ND 500 552 110 500 527 105 5 70-130/20
1634-04-4 Methyl Tert Butyl Ether 109 200 307 99 200 309 100 1 70-130/20
91-20-3 Naphthalene 1.5 200 221 110 200 221 110 0 70-130/20
103-65-1 n-Propylbenzene ND 200 216 108 200 199 100 8 70-130/20
100-42-5 Styrene ND 200 224 112 200 207 104 8 70-130/20
75-85-4 Tert-Amyl Alcohol 19.5 2000 1700 84 2000 1770 88 4 50-150/30 a
994-05-8 Tert-Amyl Methyl Ether 2.2 200 204 101 200 201 99 1 70-130/20
75-65-0 Tert-Butyl Alcohol ND 1000 863 86 1000 916 92 6 70-130/20
762-75-4 tert-Butyl Formate ND 200 133 67 200 123 62 8 50-150/30 a
630-20-6 1,1,1,2-Tetrachloroethane ND 200 221 111 200 207 104 7 70-130/20
79-34-5 1,1,2,2-Tetrachloroethane ND 200 211 106 200 202 101 4 70-130/20
127-18-4 Tetrachloroethylene ND 200 206 103 200 187 94 10 70-130/20
108-88-3 Toluene ND 200 201 101 200 191 96 5 70-130/20
87-61-6 1,2,3-Trichlorobenzene ND 200 205 103 200 199 100 3 70-130/20
120-82-1 1,2,4-Trichlorobenzene ND 200 208 104 200 200 100 4 70-130/20
71-55-6 1,1,1-Trichloroethane ND 200 204 102 200 188 94 8 70-130/20
79-00-5 1,1,2-Trichloroethane ND 200 195 98 200 179 90 9 70-130/20
79-01-6 Trichloroethylene ND 200 201 101 200 182 91 10 70-130/20
75-69-4 Trichlorofluoromethane ND 200 175 88 200 168 84 4 60-140/20
96-18-4 1,2,3-Trichloropropane ND 200 195 98 200 189 95 3 70-130/20
95-63-6 1,2,4-Trimethylbenzene 1.4 200 222 110 200 209 104 6 70-130/20
108-67-8 1,3,5-Trimethylbenzene ND 200 223 112 200 208 104 7 70-130/20
108-05-4 Vinyl Acetate ND 200 218 109 200 219 110 0 70-130/20
75-01-4 Vinyl Chloride ND 200 181 91 200 173 87 5 60-140/20
m,p-Xylene ND 400 451 113 400 421 105 7 70-130/20
95-47-6 o-Xylene ND 200 221 111 200 204 102 8 70-130/20
1330-20-7 Xylene (total)1.4 600 673 112 600 626 104 7 70-130/20
* = Outside of Control Limits.
42 of 63
LA6574655.3.2
Matrix Spike/Matrix Spike Duplicate Summary Page 3 of 3
Job Number:LA65746
Account:ATCNCR ATC Group Services LLC
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA65771-1MS 2K0129510.D 10 08/12/20 CP n/a n/a V2K2584
LA65771-1MSD 2K0129511.D 10 08/12/20 CP n/a n/a V2K2584
LA65771-1 2K0129509.D 5 08/12/20 CP n/a n/a V2K2584
The QC reported here applies to the following samples:Method: SM 6200B
LA65746-3
CAS No.Surrogate Recoveries MS MSD LA65771-1 Limits
17060-07-0 1,2-Dichloroethane-D4 92%93%92%70-130%
2037-26-5 Toluene-D8 98%97%96%70-130%
460-00-4 4-Bromofluorobenzene 101%102%96%70-130%
(a) Advisory control limits.
* = Outside of Control Limits.
43 of 63
LA6574655.3.2
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
44 of 63
LA657466
Method Blank Summary Page 1 of 1
Job Number:LA65746
Account:ATCNCR ATC Group Services LLC
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
GLE2107-MB1 LE374556.D 1 08/07/20 NN n/a n/a GLE2107
The QC reported here applies to the following samples:Method: MADEP VPH REV 2.1
LA65746-3
CAS No.Compound Result RL Units Q
C5- C8 Aliphatics (Unadj.)ND 100 ug/l
C9- C12 Aliphatics (Unadj.)ND 100 ug/l
C9- C10 Aromatics (Unadj.)ND 100 ug/l
CAS No.Surrogate Recoveries Limits
615-59-8 2,5-Dibromotoluene 96% a 70-130%
615-59-8 2,5-Dibromotoluene 93% b 70-130%
(a) Recovery from Aliphatics fraction.
(b) Recovery from Aromatics fraction.
45 of 63
LA6574666.1.1
Method Blank Summary Page 1 of 1
Job Number:LA65746
Account:ATCNCR ATC Group Services LLC
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
GLE2109-MB1 LE374576.D 1 08/11/20 NN n/a n/a GLE2109
The QC reported here applies to the following samples:Method: MADEP VPH REV 2.1
LA65746-1, LA65746-2
CAS No.Compound Result RL Units Q
C5- C8 Aliphatics (Unadj.)ND 5000 ug/kg
C9- C12 Aliphatics (Unadj.)ND 5000 ug/kg
C9- C10 Aromatics (Unadj.)ND 5000 ug/kg
CAS No.Surrogate Recoveries Limits
615-59-8 2,5-Dibromotoluene 101% a 70-130%
615-59-8 2,5-Dibromotoluene 96% b 70-130%
(a) Recovery from Aliphatics fraction.
(b) Recovery from Aromatics fraction.
46 of 63
LA6574666.1.2
Method Blank Summary Page 1 of 1
Job Number:LA65746
Account:ATCNCR ATC Group Services LLC
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
OP17210-MB LI130416.D 1 08/12/20 PC 08/12/20 OP17210 GLI1019
The QC reported here applies to the following samples:Method: EPA 504.1
LA65746-3
CAS No.Compound Result RL Units Q
106-93-4 1,2-Dibromoethane ND 0.020 ug/l
CAS No.Surrogate Recoveries Limits
348-51-6 1-Chloro-2-fluorobenzene 100%70-130%
47 of 63
LA6574666.1.3
Blank Spike/Blank Spike Duplicate Summary Page 1 of 1
Job Number:LA65746
Account:ATCNCR ATC Group Services LLC
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
GLE2107-BS1 LE374554.D 1 08/07/20 NN n/a n/a GLE2107
GLE2107-BSD1 LE374555.D 1 08/07/20 NN n/a n/a GLE2107
The QC reported here applies to the following samples:Method: MADEP VPH REV 2.1
LA65746-3
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD
C5- C8 Aliphatics (Unadj.)120 146 122 146 122 0 70-130/25
C9- C12 Aliphatics (Unadj.)120 116 97 111 93 4 70-130/25
C9- C10 Aromatics (Unadj.)40 43.1 108 42.7 107 1 70-130/25
CAS No.Surrogate Recoveries BSP BSD Limits
615-59-8 2,5-Dibromotoluene 100% a 102% a 70-130%
615-59-8 2,5-Dibromotoluene 100% b 100% b 70-130%
(a) Recovery from Aliphatics fraction.
(b) Recovery from Aromatics fraction.
* = Outside of Control Limits.
48 of 63
LA6574666.2.1
Blank Spike/Blank Spike Duplicate Summary Page 1 of 1
Job Number:LA65746
Account:ATCNCR ATC Group Services LLC
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
GLE2109-BS1 LE374574.D 1 08/11/20 NN n/a n/a GLE2109
GLE2109-BSD1 LE374575.D 1 08/11/20 NN n/a n/a GLE2109
The QC reported here applies to the following samples:Method: MADEP VPH REV 2.1
LA65746-1, LA65746-2
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/kg ug/kg %ug/kg %RPD Rec/RPD
C5- C8 Aliphatics (Unadj.)6000 6390 107 6270 105 2 70-130/25
C9- C12 Aliphatics (Unadj.)6000 5690 95 5390 90 5 70-130/25
C9- C10 Aromatics (Unadj.)2000 2140 107 2080 104 3 70-130/25
CAS No.Surrogate Recoveries BSP BSD Limits
615-59-8 2,5-Dibromotoluene 105% a 103% a 70-130%
615-59-8 2,5-Dibromotoluene 104% b 102% b 70-130%
(a) Recovery from Aliphatics fraction.
(b) Recovery from Aromatics fraction.
* = Outside of Control Limits.
49 of 63
LA6574666.2.2
Blank Spike/Blank Spike Duplicate Summary Page 1 of 1
Job Number:LA65746
Account:ATCNCR ATC Group Services LLC
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
OP17210-BS LI130417.D 1 08/12/20 PC 08/12/20 OP17210 GLI1019
OP17210-BSD LI130418.D 1 08/12/20 PC 08/12/20 OP17210 GLI1019
The QC reported here applies to the following samples:Method: EPA 504.1
LA65746-3
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 0.27 107 0.26 103 4 70-130/20
CAS No.Surrogate Recoveries BSP BSD Limits
348-51-6 1-Chloro-2-fluorobenzene 106%99%70-130%
* = Outside of Control Limits.
50 of 63
LA6574666.2.3
Duplicate Summary Page 1 of 1
Job Number:LA65746
Account:ATCNCR ATC Group Services LLC
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA65746-3DUP LE374559.D 1 08/07/20 NN n/a n/a GLE2107
LA65746-3 LE374558.D 1 08/07/20 NN n/a n/a GLE2107
LA65746-3 LE374557.D 50 08/07/20 NN n/a n/a GLE2107
The QC reported here applies to the following samples:Method: MADEP VPH REV 2.1
LA65746-3
LA65746-3 DUP
CAS No.Compound ug/l Q ug/l Q RPD Limits
C5- C8 Aliphatics (Unadj.)3090 3160 E 2 50
C9- C12 Aliphatics (Unadj.)19800 a 19700 E 2 50
C9- C10 Aromatics (Unadj.)7470 a 7770 E 3 50
CAS No.Surrogate Recoveries DUP LA65746-3 LA65746-3 Limits
615-59-8 2,5-Dibromotoluene 79% b 80% b 98% b 70-130%
615-59-8 2,5-Dibromotoluene 120% c 118% c 98% c 70-130%
(a) Result is from Run #2.
(b) Recovery from Aliphatics fraction.
(c) Recovery from Aromatics fraction.
* = Outside of Control Limits.
51 of 63
LA6574666.3.1
Duplicate Summary Page 1 of 1
Job Number:LA65746
Account:ATCNCR ATC Group Services LLC
Project:Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA65727-1DUP LE374587.D 1 08/12/20 NN n/a n/a GLE2109
LA65727-1 LE374586.D 1 08/12/20 NN n/a n/a GLE2109
The QC reported here applies to the following samples:Method: MADEP VPH REV 2.1
LA65746-1, LA65746-2
LA65727-1 DUP
CAS No.Compound ug/kg Q ug/kg Q RPD Limits
C5- C8 Aliphatics (Unadj.)ND ND nc 50
C9- C12 Aliphatics (Unadj.)ND ND nc 50
C9- C10 Aromatics (Unadj.)ND ND nc 50
CAS No.Surrogate Recoveries DUP LA65727-1 Limits
615-59-8 2,5-Dibromotoluene 105.1%110.2%70-130%
615-59-8 2,5-Dibromotoluene 116.7%100.2%70-130%
* = Outside of Control Limits.
52 of 63
LA6574666.3.2
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
53 of 63
LA657467
BLANK RESULTS SUMMARY
Part 2 - Method Blanks
Login Number: LA65746
Account: ATCNCR - ATC Group Services LLC
Project: Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
QC Batch ID: MP19136 Methods: SW846 6020B
Matrix Type: AQUEOUS Units: ug/l
Prep Date: 08/10/20
MB
Metal RL IDL MDL raw final
Aluminum 500 11 60
Antimony 5.0 .062 .85
Arsenic 5.0 .046 .61
Barium 5.0 .02 .58
Beryllium 5.0 .0094 .46
Boron 20 2.1 16
Cadmium 5.0 .017 .49
Calcium 500 3.6 60
Cerium 5.0 .0074 .85
Chromium 5.0 .052 .57
Cobalt 5.0 .0075 .48
Copper 5.0 .078 .74
Iron 500 1.9 60
Lanthanum 5.0 .0072 .79
Lithium 5.0 .31 1.1
Lead 5.0 .0084 .5 -0.049 <5.0
Magnesium 500 .86 48
Manganese 5.0 .027 .62
Molybdenum 5.0 .056 .58
Nickel 5.0 .35 .41
Potassium 500 3.8 51
Selenium 5.0 .46 3.2
Silver 5.0 .0031 .45
Silicon 500 11 160
Sodium 500 1.4 59
Strontium 5.0 .013 .24
Thallium 5.0 .022 .5
Tin 5.0 .045 .77
Titanium 5.0 .11 .93
Uranium 5.0 .0079 .78
Vanadium 5.0 .016 .52
Zinc 5.0 .07 1.9
Associated samples MP19136: LA65746-3
_________________________________________________________________________________________________________
Page 1
54 of 63
LA6574677.1.1
BLANK RESULTS SUMMARY
Part 2 - Method Blanks
Login Number: LA65746
Account: ATCNCR - ATC Group Services LLC
Project: Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
QC Batch ID: MP19136 Methods: SW846 6020B
Matrix Type: AQUEOUS Units: ug/l
Prep Date: 08/10/20
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
55 of 63
LA6574677.1.1
MATRIX SPIKE AND DUPLICATE RESULTS SUMMARY
Login Number: LA65746
Account: ATCNCR - ATC Group Services LLC
Project: Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
QC Batch ID: MP19136 Methods: SW846 6020B
Matrix Type: AQUEOUS Units: ug/l
Prep Date: 08/10/20
LA65746-3 Spikelot QC
Metal Original MS MPICPMS6 % Rec Limits
Aluminum
Antimony
Arsenic
Barium
Beryllium
Boron
Cadmium
Calcium
Cerium
Chromium
Cobalt
Copper
Iron
Lanthanum
Lithium
Lead 4.7 98.8 100 94.1 75-125
Magnesium
Manganese
Molybdenum
Nickel
Potassium
Selenium
Silver
Silicon
Sodium
Strontium
Thallium
Tin
Titanium
Uranium
Vanadium
Zinc
Associated samples MP19136: LA65746-3
_________________________________________________________________________________________________________
Page 1
56 of 63
LA6574677.1.2
MATRIX SPIKE AND DUPLICATE RESULTS SUMMARY
Login Number: LA65746
Account: ATCNCR - ATC Group Services LLC
Project: Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
QC Batch ID: MP19136 Methods: SW846 6020B
Matrix Type: AQUEOUS Units: ug/l
Prep Date: 08/10/20
LA65746-3 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
57 of 63
LA6574677.1.2
MATRIX SPIKE AND DUPLICATE RESULTS SUMMARY
Login Number: LA65746
Account: ATCNCR - ATC Group Services LLC
Project: Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
QC Batch ID: MP19136 Methods: SW846 6020B
Matrix Type: AQUEOUS Units: ug/l
Prep Date: 08/10/20
LA65746-3 Spikelot MSD QC
Metal Original MSD MPICPMS6 % Rec RPD Limit
Aluminum
Antimony
Arsenic
Barium
Beryllium
Boron
Cadmium
Calcium
Cerium
Chromium
Cobalt
Copper
Iron
Lanthanum
Lithium
Lead 4.7 99.7 100 95.0 0.9 20
Magnesium
Manganese
Molybdenum
Nickel
Potassium
Selenium
Silver
Silicon
Sodium
Strontium
Thallium
Tin
Titanium
Uranium
Vanadium
Zinc
Associated samples MP19136: LA65746-3
_________________________________________________________________________________________________________
Page 3
58 of 63
LA6574677.1.2
MATRIX SPIKE AND DUPLICATE RESULTS SUMMARY
Login Number: LA65746
Account: ATCNCR - ATC Group Services LLC
Project: Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
QC Batch ID: MP19136 Methods: SW846 6020B
Matrix Type: AQUEOUS Units: ug/l
Prep Date: 08/10/20
LA65746-3 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
59 of 63
LA6574677.1.2
SPIKE BLANK AND LAB CONTROL SAMPLE SUMMARY
Login Number: LA65746
Account: ATCNCR - ATC Group Services LLC
Project: Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
QC Batch ID: MP19136 Methods: SW846 6020B
Matrix Type: AQUEOUS Units: ug/l
Prep Date: 08/10/20
BSP Spikelot QC
Metal Result MPICPMS6 % Rec Limits
Aluminum
Antimony
Arsenic
Barium
Beryllium
Boron
Cadmium
Calcium
Cerium
Chromium
Cobalt
Copper
Iron
Lanthanum
Lithium
Lead 99.2 100 99.2 80-120
Magnesium
Manganese
Molybdenum
Nickel
Potassium
Selenium
Silver
Silicon
Sodium
Strontium
Thallium
Tin
Titanium
Uranium
Vanadium
Zinc
Associated samples MP19136: LA65746-3
_________________________________________________________________________________________________________
Page 1
60 of 63
LA6574677.1.3
SPIKE BLANK AND LAB CONTROL SAMPLE SUMMARY
Login Number: LA65746
Account: ATCNCR - ATC Group Services LLC
Project: Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
QC Batch ID: MP19136 Methods: SW846 6020B
Matrix Type: AQUEOUS Units: ug/l
Prep Date: 08/10/20
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
61 of 63
LA6574677.1.3
SERIAL DILUTION RESULTS SUMMARY
Login Number: LA65746
Account: ATCNCR - ATC Group Services LLC
Project: Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
QC Batch ID: MP19136 Methods: SW846 6020B
Matrix Type: AQUEOUS Units: ug/l
Prep Date: 08/10/20
LA65746-3 QC
Metal Original SDL 1:5 %DIF Limits
Aluminum
Antimony
Arsenic
Barium
Beryllium
Boron
Cadmium
Calcium
Cerium
Chromium
Cobalt
Copper
Iron
Lanthanum
Lithium
Lead 4.69 9.78 70.3*(a) 0-20
Magnesium
Manganese
Molybdenum
Nickel
Potassium
Selenium
Silver
Silicon
Sodium
Strontium
Thallium
Tin
Titanium
Uranium
Vanadium
Zinc
Associated samples MP19136: LA65746-3
_________________________________________________________________________________________________________
Page 1
62 of 63
LA6574677.1.4
SERIAL DILUTION RESULTS SUMMARY
Login Number: LA65746
Account: ATCNCR - ATC Group Services LLC
Project: Circle K #4132, 2810 Pinecroft Rd, Greensboro, NC
QC Batch ID: MP19136 Methods: SW846 6020B
Matrix Type: AQUEOUS Units: ug/l
Prep Date: 08/10/20
LA65746-3 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
(a) Percent difference acceptable due to low initial sample concentration.
_________________________________________________________________________________________________________
Page 2
63 of 63
LA6574677.1.4