MO-9485_40926_CA_20-DAY_20190610_20-Day Report

CESONCa
June 10, 2019
Ms. Beverly Trudy
NCDEQ / DWM / UST Section
610 East Center Avenue, Suite 300
Mooresville, North Carolina 28115
RE: 20-Day Report
Circle K No. 2708383
873 Old Charlotte Road Southwest
Concord, Cabarrus County, North Carolina
NCDEQ UST Facility No. 4527
CES Project No. 6.0005
Dear Ms. Trudy:
CES of NC, PLLC
301 McCullough Drive, Suite 400
Charlotte, North Carolina 28262
704.909.2911 [office]
540.343.6259 [facsimile]
Crawford Environmental Services of North Carolina, PLLC ("CES") on behalf of Circle K Stores
Inc. ("Circle K") is submitting the following "20-Day Report" for the above -referenced site for your
review and approval as requested in email correspondence dated May 29, 2019. This report
provides a summary of initial response and abatement steps taken within the first 20-days
following a release reported by CES on May 23, 2019 and is not meant to be a complete closure
assessment. As required, an Initial Abatement Action report will be submitted subsequent to this
report documenting the complete UST closure and abatement activities including
recommendations for further action.
If you have any questions or comments pertaining to this project please feel free to contact me at
[phone] or by email at awiIIiamson(ab-crawfordenvironmental. com.
Sincerely,
CRAWFORD ENVIRONMENTAL SERVICES OF NORTH CAROLINA, PLLC
/fa"C-ol_
Aaron Williamson
Project Manager
cc: Mrs. Debrah B. Carl, Circle K — Charlotte, NC (electronic)

CESONCa
20-Day Report
Circle K No. 2708383
873 Old Charlotte Road Southwest
Concord, Cabarrus County, North Carolina
NCDEQ UST Facility No. 4527
CES Project No. 6.0005
Submittal Date:
June 10, 2019
Prepared For:
Mrs. Debrah B. Carl
Environmental Manager
Circle K Stores Inc.
2550 West Tyvola Road, Suite 200
Charlotte, North Carolina 28217
TM
Prepared By:
Crawford Environmental Services of North Carolina, PLLC
301 McCullough Drive, Suite 400
Charlotte, North Carolina 28262
p: [phone] / f: [phone]
www.crawfordenvironmental.com

CESONM
SITE INFORMATION
SITE IDENTIFICATION
Facility ID: 4527
UST Incident No: Not Assigned
Site Risk: Not Determined
20-Day Report
Circle K 2708383
Concord, North Carolina
Agency Contact: Beverly Trudy, NCDEQ, Mooresville Regional Office
Site Name: Circle K No. 2708383
Site Street Address: 873 Old Charlotte Road Southwest
Concord, North Carolina 28027
County: Cabarrus
Latitude / Longitude: 35.3831660 /-80.5975060 (GPS UST Pit)
SITE CONTACT INFORMATION
UST Owner/Operator:
Circle K Stores Inc.
Address:
2550 West Tyvola Road, Suite 200
Charlotte, NC 28217
Telephone:
[phone]
Contact:
Debrah B. Carl, Environmental Manager
Property Owner:
Hickory Woods, Inc.
Address:
PO Box 526
Concord, NC 28026
Consultant:
Crawford Environmental Services of NC, PLLC
Address:
301 McCullough Drive, Suite 400
Charlotte, NC 28262
Telephone:
[phone]
NC License No:
C-550
UST Removal Contractor:
Zebra Environmental & Industrial Services, Inc.
Address:
PO Box 357, High Point, NC 27261
Telephone:
[phone]
Analytical Laboratory 1:
Pace Analytical Services, LLC
Address:
9800 Kincey Avenue, Suite 100, Huntersville, NC 28078
Telephone:
[phone]
State Certification No:
12
Analytical Laboratory 2:
Rapid Environmental Diagnostics, LLC
Address:
5598 Marvin K. Moss Lane Suite 2003, Wilminqton, NC 28409
Telephone:
[phone]
State Certification No:
N/A
INFORMATION ABOUT THE RELEASE
Date Discovered: May 22, 2019
Estimated Quantity of Release: Unknown
Cause of Release: Unknown
Source of Release: Former UST System
UST(s) Size & Contents: (3) 10,000-gallon Gasoline
Page No. i

20-Day Report
Circle K 2708383
Concord, North Carolina
CERTIFICATION
1, Brian L. Haves, a Licensed Geologist employed by Crawford Environmental Services of North
Carolina, PLLC, do certify that the information contained in this report is correct and accurate to
the best of my knowledge.
Crawford Environmental Services of North -Carolina, PLLC is licensed to practice geology in North
Carolina, The certification number of the company or corporation to practice geology is C-550.
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Page No. ii

CESONCa
EXECUTIVE SUMMARY
20-Day Report
Circle K 2708383
Concord, North Carolina
As required, the following executive summary provides the most pertinent information for this
assessment. For additional information please refer to subsequent sections of this report.
➢ CES was contracted by Circle K in May of 2019 to complete underground storage tank
(UST) closure assessment activities associated with the removal of three (3) 10,000-gallon
gasoline USTs.
➢ In summary, CES mobilized to the site on May 21 and May 22, 2019 for observation of UST
system removal and the collection of soil samples from beneath the locations of the former
UST system. Ultraviolet fluorescence (UVF) analytical data of soils located beneath the
former UST system indicated petroleum hydrocarbon impact.
➢ Free product was not observed in the excavation.
➢ Over excavation was performed based on and guided by UVF screening results.
Approximately 130 tons of petroleum impacted soils were removed from the site.
➢ Rock was encountered at depths ranging from 13 to 16-feet below ground surface.
Groundwater was not encountered in the excavation.
➢ No sensitive receptors were identified in the vicinity of the site.
➢ Additional details of the UST closure and initial abatement activities will be provided in a
subsequent Initial Abatement Action report.
Page No. iii

C ^ a Day Report
v CirclecleK 2708383
Concord, North Carolina
TABLE OF CONTENTS
SITE INFORMATION.....................................................................................................................I
CERTIFICATION.......................................................................................................................... II
EXECUTIVE SUMMARY.............................................................................................................III
1.0 INTRODUCTION...............................................................................................................1
2.0
SITE HISTORY AND CHARACTERIZATION..................................................................2
2.1 Past Releases 2
2.2 Current Release 3
2.3 Site Characteristics 3
3.0
INITIAL RESPONSE AND ABATEMENT ACTIONS.......................................................4
3.1 UST Cleaning and Residual Fluids Disposal 4
3.2 UST System Removal and Disposal 4
3.3 Excavation Extent Determination 4
3.4 Extent of Soil Excavation Activities 5
3.5 Quantity of Soils Removed, Storage Methods and Final Disposition 5
4.0
LIMITATIONS...................................................................................................................6
5.0
REFERENCES..................................................................................................................7
TABLES
Table 1: Site History — UST Owner/Operator and Other Responsible Party Information
Table 2: Site History — UST System and Other Release Information
Table 3: Summary of Soil Samples
FIGURES
Figure 1: Site Location Map
Figure 2: Site Map
Figure 3: UST Closure Sample Locations
Figure 4: Over Excavation Sample Map
APPENDICES
Appendix A: UST-61 Form
Appendix B: Analytical Report
Page No. iv

C ^ a Day Report
�v CirclecleK 2708383
Concord, North Carolina
1.0 Introduction
The purpose of this "20-Day Report" is to provide a progress update of initial response and
abatement actions performed within the first 20-days following discovery of a release. The release
was reported during underground storage tank (UST) removal activities at the Circle K 2708383
facility located at 873 Old Charlotte Road SW in Concord, North Carolina (Site). A topographic
map illustrating the Site vicinity is included as Figure 1. This report is not meant to be a complete
assessment of UST closure and includes only the data available at the time of this report including,
but not limited to, laboratory analytical results of excavation extents.
In May of 2019 three 10,000-gallon petroleum USTs and associated piping and dispensers were
removed from the site by Zebra Environmental and Industrial Services, Inc. (Zebra) with activity
monitoring provided by CES personnel. Petroleum contaminated soil was discovered beneath the
former UST system. Over excavation efforts were performed to remove grossly contaminated
soils from the Site.
The Site is currently vacant under lease by Circle K. The removal of the former UST system was
prompted by permanent closure of the Site facility by Circle K.
Page No. 1

CESONCa
2.0 Site History and Characterization
20-Day Report
Circle K 2708383
Concord, North Carolina
The site has operated an underground storage tank system since at least 1987. The former UST
system included three single -wall fiberglass tanks containing various grades of gasoline, two
dispensers, and associated fiberglass piping. The three USTs were oriented in a northeast -
southwest direction located on the perimeter of the property in the vicinity of the southwestern
property corner as illustrated on Figure 2. Product piping exited the central northeast side of the
UST pit and supplied product to two dispensers.
Historical UST owner/operator and other responsible party information is provided in Table 1.
UST system and other release information is provided in Table 2.
2.1 Past Releases
In January and February of 2004, a due diligence investigation involving collection of soil
and groundwater samples at the Site was conducted in response to the sale of Circle K
by ConocoPhillips to Alimentation Couche-Tard. Results of the investigation determined
that soil and groundwater at the Site was impacted with petroleum hydrocarbons.
As a result of the due diligence investigation, the North Carolina Department of
Environment and Natural Resources (now known as the North Carolina Department of
Environmental Quality [NCDEQ]) assigned Incident Number 27671 under responsible
party ConocoPhillips and issued a Notice of Regulatory Requirements (NORR) requesting
the completion of a Site Check at the facility.
On March 23, 2004, a Site Check was completed at the facility by advancing eleven soil
borings in the vicinity of the UST system based on previous soil boring locations and site
check requirements. Results of the site check indicated that releases may have occurred
from the eastern -most UST and from the dispensers.
On April 29, 2004, a NORR requesting the preparation of a Limited Site Assessment (LSA)
was issued by the NCDEQ. Results of the LSA were documented in a report dated
September 15, 2004 prepared by ATC Associates of North Carolina, P.C. (ATC). Based
on the findings of the report, the incident was classified as "low" risk and no further action
was requested.
On June 12, 2006, the NCDEQ issued a "Notice of No Further Action". Incident Number
27671 received closure through recordation of a "Notice of Residual Petroleum" (NRP)
with the Cabarrus County Register of Deeds perpetually restricting groundwater at the site
from use as a water supply. The notice was signed by ConocoPhillips and recorded in
Deed Book 6870, Page 168 on July 11, 2006.
No other information was obtained or reviewed for the completion of this report.
Page No. 2

CESONCa
2.2 Current Release
20-Day Report
Circle K 2708383
Concord, North Carolina
Upon removal of the UST system on May 22, 2019, petroleum contaminated soils were
suspected. Free product was not observed, but petroleum staining and odors were
detected. Based upon field screening and on -site ultra -violet fluorescence (UVF)
laboratory analysis, soil contamination was confirmed. As required, evidence of a
suspected release was reported to the NCDEQ by submission of Form UST-61 "24-Hour
Release and UST Leak Reporting Form" to the NCDEQ Mooresville Regional Office via
email correspondence on May 23, 2019. A copy of the UST-61 form is included in
Appendix A.
The amount or exact cause and source of the release were unknown. Soil samples
indicated impacts above NCDEQ Action Limits at the northeast corner of the UST pit and
along a portion of the product piping trench closest to the UST pit as illustrated on Figure
3.
2.3 Site Characteristics
The Site facility formerly operated as Circle K 2708383, a convenience store with Shell
branded petroleum retail. The Site is currently vacant, and the facility is inactive. The Site
was utilized for commercial purposes with adjacent properties to the northwest and
southwest also utilized as commercial properties. Adjacent properties to the northeast
and southeast were utilized for residential purposes. Municipal water is supplied to the
Site and vicinity by the City of Concord.
Site topography is relatively flat. Surface runoff appears to flow towards the northeast. The
closest surface water bodies are two intermittent streams located approximately 1,200-
feet north and 1,500-feet south of the site which form upper tributaries of Irish Buffalo
Creek which is located approximately 5,000-feet northeast of the site. No supply wells or
other sensitive receptors were observed in the Site vicinity.
Surface cover at the site consists primarily with asphalt. Portions of the pavement which
were removed to access the UST system are planned to be resurfaced with concrete. The
primary soil type observed during UST closure activities was sandy silt with lean clay.
Sparse vegetation is present along the perimeter of the Site.
Based on previous site assessment, depth to groundwater at the site ranges from
approximately 18 to 20-feet below ground surface (BGS). Groundwater was not
encountered during UST removal activities; however weathered rock was encountered at
depths ranging from 13 to 16-feet BGS. Groundwater flow direction, as determined by
historical assessments, was to the east-southeast.
Page No. 3

CESONCa
3.0 Initial Response and Abatement Actions
20-Day Report
Circle K 2708383
Concord, North Carolina
In conducting initial response and abatement activities at the site, the most recent revision of the
NCDEQ "Guidelines for Site Checks, Tank Closure, and Initial Response and Abatement for UST
Releases" was utilized for guidance. The following offers further details and provides required
information pertaining to the UST removal and initial abatement activities conducted at the Site.
3.1 UST Cleaning and Residual Fluids Disposal
On May 21, 2019, the USTs and piping were cleaned and evacuated by Zebra utilizing a
pressure washer with proprietary nozzle and vacuum truck in tandem. Prior to UST
cleaning, usable gasoline product had already been removed by Circle K. A total of
approximately 595-gallons of a product/water mixture, consisting primarily of rinsate, was
removed from the USTs. Copies of the disposal manifests will be provided in the Initial
Abatement Action (IAA) report. The storage, sampling and disposal of residual fluids
recovered/generated during the UST closure activities were conducted by Zebra at their
High Point, NC facility.
In addition, subsequent to cleaning and prior to removal the atmosphere within the USTs
was verified inert using an explosive limit meter under supervision of the City of Concord
Fire Department.
3.2 UST System Removal and Disposal
Product dispensers were removed from the two (2) dispenser islands at the Site through
the course of canopy demolition procedures commencing on May 21, 2019. On May 21,
2019, the dispenser sumps and product piping were exposed for visual assessment. The
sumps and piping were observed to be in good condition. Product piping was constructed
of a fiberglass reinforced plastic (FRP). Following inspection, the product piping was
removed from the ground.
USTs were exposed for inspection on May 22, 2019 and appeared to be in good condition.
Following inspection, the USTs were removed from the ground on May 22, 2019 by Zebra.
The cleaned, evacuated, and inert fiberglass USTs were mechanically crushed by Zebra
prior to removal from the excavation. The crushed tank and product piping material was
loaded and transported off -site by Zebra. Certification of tank disposal will be included in
the IAA report.
3.3 Excavation Extent Determination
Following removal of the UST system, soils were visually inspected for staining or other
signs of petroleum contamination. Free product was not observed. During the removal of
the UST system, no materials located beyond 5-feet of the UST system components were
removed. Required UST closure samples were collected directly from the open excavation
at the locations illustrated on Figure 3 and analyzed on -site by UVF analysis performed
by Rapid Environmental Diagnostics, LLC (RED Lab).
Page No. 4

CES@NCa
3.4 Extent of Soil Excavation Activities
20-Day Report
Circle K 2708383
Concord, North Carolina
Based on the results of UVF analysis, soils at the locations of SS-6, SS-8, SS-11, SS-13,
and SS-16 were impacted above the NCDEQ Action Limits for GRO and/or DRO of 50-
milligrams per kilogram (mg/kg) and 100-mg/kg, respectively. Over excavation
commenced via spot digging at the locations of GRO and DRO exceedances focusing in
the vertical direction.
Rock was encountered in the excavation at depths ranging from 13 to 16-feet BGS which
prevented additional vertical soil excavation where encountered. Depth to rock appeared
to be shallowest at 13-feet BGS on the northwestern side of the UST pit and dipped
towards the southeastern side of the UST pit to a depth of approximately 16-feet BGS.
Excavation base soil samples were collected directly above the soil/rock interface.
Groundwater was not encountered in the excavation; therefore, groundwater samples
were not collected. Sidewall samples were collected and screened to determine the lateral
extent of contamination and direct additional required excavation. Over excavation sample
locations and the final limits of excavation are illustrated on Figure 4. A summary of
samples and analytical data is provided in Table 3.
Following completion of over excavation activities, extent sidewall and base samples were
collected and submitted for traditional laboratory analysis for volatile organic compounds
by EPA Method 8260 and volatile petroleum hydrocarbons by MADEP VPH. Results of
the excavation extent samples will be presented in the IAA report. On -site UVF screening
indicated that sidewalls were not impacted, therefore lateral excavation was not
performed.
3.5 Quantity of Soils Removed, Storage Methods and Final Disposition
During tank removal, a total of approximately 200-cubic yards (yd3) of overburden pea
gravel and 100 yd3 of over burden soil was generated. The overburden material was
initially stockpiled, screened, determined to be clean, and subsequently returned to the
tank basin.
Soils generated during over -excavation efforts were loaded directly into trucks,
manifested, and transported off -site for disposal at the AES facility located in Thomasville,
NC. Approximately 130-tons of petroleum impacted soil were removed from the site.
Certified disposal manifests will be included in the IAA report.
Page No. 5

C ^ a Day Report
v CirclecleK 2708383
Concord, North Carolina
4.0 Conclusions and Limitations
Petroleum contamination in soils at the Site appear to extend to the soil/bedrock interface,
however an NRP for soil is on file for the property. Additionally, detected soil impacts are
consistent with documented areas of contamination associated with historical Site incident
number 27671. Vertical excavation was limited by the presence of rock at the base of the
excavation.
Contaminated soils were removed from the Site to the extent feasible during UST closure
activities. Groundwater was not encountered during over excavation activities and impacts to
groundwater are unknown at this time. Water supply wells or other sensitive environmental
receptors were not observed in the site vicinity. Additional details of UST closure and initial
abatement activities will be presented in a subsequent IAA report.
This report has been prepared for the exclusive use of Circle K Stores Inc. for specific application
to the referenced site in Concord, North Carolina. The assessment was conducted based on the
scope -of -work and level of effort requested by the NCDEQ and with resources adequate only for
that scope -of -work. Our findings have been developed in accordance with generally accepted
standards of geology and hydrogeology practices in the State of North Carolina, available
information, and our professional judgment. No other warranty is expressed or implied.
The data that are presented in this report are indicative of conditions that existed at the precise
locations sampled and at the time the samples were collected. Additionally, the data obtained
from samples would be interpreted as being meaningful with respect to parameters indicated in
the laboratory report. No additional information can be logically be inferred from these data.
Conclusions and recommendations set forth herein are applicable only to the facts and conditions
described at the time of this report
Page No. 6

CES@NCa
5.0 REFERENCES
20-Day Report
Circle K 2708383
Concord, North Carolina
"Guidelines for Site Checks, Tank Closure, and Initial Response and Abatement for UST
Releases" completed by the UST Section of the NCDEQ, Division of Waste Management (DWM)
dated March 1, 2007, Change 9.
"Guidelines for Assessment and Corrective Action for UST Releases" completed by the NCDEQ,
Division of Waste Management dated July 15, 2008, Change 3.
"Guidelines for Sampling" completed by the UST Section of the NCDEQ, DWM dated July 15,
2008, Change 2.
"24-Hr. Release Report" completed by ATC dated February 23, 2004.
"Site Check Report" completed by ATC dated April 12, 2004.
"Phase II Limited Site Assessment Report" completed by ATC dated September 15, 2004.
"Notice of No Further Action" completed by ATC dated July 18, 2006.
Page No. 7

TABLES

TABLE I
SITE HISTORY - UST OWNER / OPERATOR OTHER RESPONSIBLE PARTY INFORMATION
Circle K No. 2708383
873 Old Charlotte Road SW
Concord, North Carolina 28027
NCDEQ UST Facility ID: 4527
UST ID Number
1 through 3
Facility ID Number
1 4527
Name of Owner
Dates of Operation (MM/DD/YY to MM/DD/YY)
Circle K Stores, Inc.
2004 to Present
Street Address
2550 West Tyvola Road, Suite 200
City
I State
Zip
ITelephone Number
Charlotte
INC
28217
704-583-5762
Name of Operator
Dates of Operation (MM/DD/YY to MM/DD/YY)
Circle K Stores, Inc.
2004 to Present
Street Address
2550 West Tyvola Road, Suite 200
City
I State
Izip
ITelephone Number
Charlotte
INC
128217
704-583-5762
UST ID Number
1 through 3
Facility ID Number
1 4527
Name of Owner
Dates of Operation (MM/DD/YY to MM/DD/YY)
Conoco Phillips Company
1987 to 2004
Street Address
600 North Dairy Ashford
City
I State
Zip
ITelephone Number
Houston
JTX
77079-1175
832-379-6135
Name of Operator
Dates of Operation (MM/DD/YY to MM/DD/YY)
Conoco Phillips Company
1987 to 2004
Street Address
600 North Dairy Ashford
City
I State
Izip
ITelephone Number
Houston
JTX
77079-1175
832-379-6135
Other Incidents Onsite or Commingled/In Close Proximity
Incident Number
27671
Date Incident Occurred
2/22/2004
Name of Other Responsible Party
Date Incident Report
2/23/2004
Conoco Phillips Company
Date Incident Closed
7/11/2006
Street Address
600 North Dairy Ashford
City
State
Zip
Telephone Number
Houston
TX
77079-1175
832-379-6135

TABLE 2
UST SYSTEM AND OTHER RELEASE INFORMATION
Circle K No. 2708383
873 Old Charlotte Road SW
Concord, North Carolina 28027
NCDEQ UST Facility ID: 4527
UST ID Number
Current/Last
Contents
Previous Contents
Capacity
I (gallons)
Construction
Details
Tank
Dimensions
(feet)
Description of
Associated Piping and
Pumps
Date Tank
Installed
Status of
UST
Was Release
Associated with
the UST System?
1
Gasoline
Gasoline
10,000
Fiberglass
8 x 32
Fiberglass/Pressure
1987
Removed
Yes
2
Gasoline
Gasoline
10,000
Fiberglass
8 x 32
Fiberglass/Pressure
1987
Removed
Yes
3
Gasoline
Gasoline
10,000
Fiberglass
8 x 32
Fiberglass/Pressure
1987
Removed
Yes
Description of
Was Release
Current/Last
Capacity
Construction
Tank
Associated Piping and
Date Tank
Status of
Associated with
AST ID Number
Contents
Previous Contents
(gallons)
Details
Dimensions
Pumps
Installed
AST
the AST System?
None
Incident
Number
Material Released
Date of Release
Descrtiption of Release
27671
Gasoline
2/23/2004
1 Petroleum soil contamination discovered during due diligence for property transaction.

TABLE 3
SUMMARY OF SOIL SAMPLES
CIRCLE K 2708383
Circle K No. 2708383
873 Old Charlotte Road SW
Concord, North Carolina 28027
NCDEQ UST Facility ID: 4527
Analytical Method (e.g. VOC by EPA 8260)
UVF (mg/kg)
Contaminant of Concern
x
m
70
�
0
Q
0
p
y
E
Q
_
a�
Sample ID
Date
Collected
Source Area
Sample
Depth
(ft BGS)
Incident
Phase
Stockpile
5/22/2019
UST System
N/A
IAA
<0.68
1.9
6.9
8.8
2
<0.22
Stockpile 2
5/22/2019
UST System
N/A
IAA
<0.52
<0.52
<0.52
<0.52
<0.1
<0.17
SS-1
5/22/2019
Dispenser
5
IAA
<0.63
2.2
<0.63
2.2
<0.13
<0.2
SS-2
5/22/2019
Lines
5
IAA
<0.63
<0.63
<0.63
<0.63
<0.13
<0.2
SS-3
5/22/2019
Lines
5
IAA
<0.65
3.4
10.5
13.90
4.10
<0.21
SS-4
5/22/2019
Lines
5
IAA
11.9
22.5
41.3
63.8
52.7
2.00
SS-5
5/22/2019
Dispenser
5
IAA
<0.28
<0.28
<0.28
<0.28
<0.06
<0.09
SS-6
5/22/2019
Lines
5
IAA
20.3
44
186.2
230.2
41.5
1.50
SS-7
5/22/2019
Lines
5
IAA
<0.32
<0.32
0.32
0.32
0.190
<0.1
SS-8
5/22/2019
UST Pit
13
IAA
353.1
2,435
244.5
2679.5
1229
47.4
SS-9
5/22/2019
UST Pit
13
IAA
<0.56
4.5
0.56
5.1
0.3
<0.18
SS-10
5/22/2019
UST Pit
13
IAA
<1.2
4
24.1
28.1
0.8
<0.2
SS-11
5/22/2019
UST Pit
13
IAA
26.2
150.2
32.1
182.3
10.5
0.4
SS-12
5/22/2019
UST Pit
13
IAA
2.2
4.4
5.4
9.8
0.4
<0.16
SS-13
5/22/2019
UST Pit
13
IAA
375.6
2,935
185.2
3,120.2
117.7
4.7
SS-14
5/22/2019
UST Pit
13
IAA
<0.76
<0.76
<0.76
<0.76
<0.15
<0.24
SS-15
5/22/2019
UST Pit
13
IAA
<0.56
2.9
0.56
3.5
0.5
<0.18
SS-16
5/22/2019
UST Pit
13
IAA
24.4
118.1
20.5
138.6
0.7
<0.18
SS-17
5/22/2019
UST Pit
13
IAA
<0.48
2
7
9
0.5
<0.15
SS-18
5/22/2019
UST Pit
13
IAA
<0.37
<0.37
0.37
0.3700
0.2
<0.12
SS-19
5/22/2019
UST Pit
13
IAA
<0.45
<0.45
<0.45
<0.45
<0.09
<0.14
SS-6A
5/22/2019
Lines
6
IAA
<0.77
564.6
336.7
901.3
1,796.0
69.9
SS-613
5/22/2019
Lines
11
IAA
<0.51
309.5
297.2
606.7
186.1
7.2
SS-8A
5/22/2019
UST Pit
16
IAA
286.8
2,135
150.4
2,285.4
582.0
22.7
SS-11A
5/22/2019
UST Pit
16
IAA
<0.55
347.7
278.9
626.6
164.3
6.5
SS-13A
5/22/2019
UST Pit
14
IAA
<0.64
>232.7
>124.1
>356.8
>333.2
>13
Sidewall SE
5/22/2019
UST Pit
10
IAA
<0.7
<0.7
0.7
0.7
0.4
<0.22
Sidewall NE
5/22/2019
UST Pit
10
IAA
<0.36
<0.36
<0.36
<0.36
<0.07
<0.11
Sidewall SW
5/22/2019
UST Pit
10
IAA
<0.64
<0.64
<0.64
<0.64
<0.13
<0.21
Sidewall NW
5/22/2019
UST Pit
10
IAA
<0.45
<0.45
<0.45
<0.45
<0.09
<0.15
L Sidewall NE
5/22/2019
UST Pit
8
IAA
<0.61
10.2
11.4
21.6
7.2
0.3
L Sidewall SE
5/22/2019
UST Pit
8
IAA
5.6
9.9
13.2
23.1
12.7
0.5
L Sidewall NW
5/22/2019
UST Pit
8
IAA
<0.3
<0.3
0.3
0.3
0.3
<0.09
Load 2
5/22/2019
UST Pit
N/A
IAA
3.9
415.7
411.5
827.2
1,280.0
47.7
Load 3
5/22/2019
UST Pit
N/A
IAA
<0.66
406.9
308.4
715.3
181.7
7.2000
Action Level (mg/kg)
N/A
50
100
N/A
N/A
N/A
ft BGS = feet below ground surface
Results in mg/kg

FIGURES

Legend
\ / \
OF \
Approximate Property Line
Fence
/
\
Former Dispenser
\ OF
Former UST System
\
E Underground Electric Line
OE Overhead Electric Line
Underground Natural Gas Line
Underground Communication Line
O\
w Underground Water Line
ss Underground Sanitary Sewer Line
\
Underground Storm Sewer Line
r
/
% )%
CO \
V)?
sw
Storm Sewer Inlet
0 ,
� / > o��
\
ete,-
y/40
\
YX Light Pole
c�
�j
OF \
`a> Utility Pole
l\
General Notes:
All locations, dimensions, and property lines depicted on
this plan are approximate. This plan should not be used
UST
Circle K
\
for construction or land conveyance purposes.
Basin ' %
2708383
/
\
Map adapted from Google Earth aerial imagery.
\ w
/ \
0 20' 40' 80'
\
1 inch equals 40 feet
CES@NC-CJL
\
/ \
/
CLIENT: Circle K Stores, Inc.
Figure 2
873 Old Charlotte Highway
LOCATION:
Concord, North Carolina
Circle K 2708383
Site Map
Adapted from GoogleEarth aerial imagery / /
\ \
UST Closure Assessment Report

Legend
\ / �
\
Approximate Property Line
SS-1
SS-3
\
5
5 �
�
—.—°—,— Fence
\
SS-6
5 5/22/2019
5/22/2019
\
\
Former Dispenser
5/22/2019 2.2
3.4
— — — — — — Former UST System
44 \ <0.63
186.2
10.5
/
• Soil Sample Location
SS-16
\
1 3
\
SS-1 Sample Identification
5/22I
SS-4
\
SS-12
5 Sample Depth
5/22/2019 Sample Date
118.1
.
205
5
5/22/2019
\
13
5122/2019
2.2 Gasoline Ranged Organics (mg/kg)
SS-17
\
<0.63 Diesel Ranged Organics (mg/kg)
13
/
22.5
\ 4.4
/
5/22/2019
/ j
\ 41.3
5.4
/
(ND) Not Detected
2
Gj SS-1
O/)
CO
7
�. s8-2
\
ate
ryRo
SS-5 ///(ND)
dC!
(ND) ASS-3
� /�
\
\
SS-8
�a SS-6 �SS-4
13
\
General Notes:
All locations, dimensions, and property lines depicted on
/ ASS-16\ \
/ SS-1 0�SS-7 (ND)
�O'SS-12�
5/22/2019
\
this plan are approximate. This plan should not be used
for land
SAS-180�// , _
Circle K
2,435
construction or conveyance purposes.
SS-19 (ND) / ASS-13�SS-8
�S\4 ( �� //. '
2708383
/
244.5
Map adapted from Google Earth aerial imagery.
SS-18
<,i // ass-9
/
13
/ SS-1 �. SS-10
SS-9
5/22/2019
/ \� -11
13
5/22/2019
\
\
<0.37
0.37
4.5
/
/
SS-15
13
\
0.56
0 20' 40' 80'
5/22/2019 SS-13 \
/
SS-10
13
1 inch equals 40 feet
/
2.9 13
5/22/2019
0.56 2,935
/
5/22I2019
/
4
CF.S@ NCa
185.2
\
24.1
CLIENT: Circle K Stores, Inc.
Figure 3
/ \ SS-11
/
873 Old Charlotte Highway
/
13
LOCATION:
Concord, North Carolina
\ 5/22/2019
/
Circle K 2708383
150.2
UST Closure Sample Locations
Adapted from Goo IeEarth aerial imagery /
p g g Y /
\ \
32.1
/
UST Closure Assessment Report

Legend
------ Approximate Property Line
— ° — — Fence
Cff) Former Dispenser
— — — — — — Former UST System
• Soil Sample Location
SS-1
Sample Identification
5
Sample Depth
5/22/2019
Sample Date
2.2
Gasoline Ranged Organics (mg/kg)
<0.63
Diesel Ranged Organics (mg/kg)
(ND)
Not Detected
General Notes:
All locations, dimensions, and property lines depicted on
this plan are approximate. This plan should not be used
for construction or land conveyance purposes.
Map adapted from Google Earth aerial imagery.
0 20' 40' 80'
1 inch equals 40 feet
CF.S@NC-CJL
CLIENT: Circle K Stores, Inc.
873 Old Charlotte Highway Figure 4
LOCATION: Concord, North Carolina
Circle K 2708383
Over Excavation Sample Locations
UST Closure Assessment Report

APPENDIX A
UST-61 FORM

UST-61
24-Hour Release and UST Leak Reporting Form.
For Releases This form should be completed and submitted to the UST Section's regional office following a known or suspected release from
an underground storage tank (UST) system. This form is required to be submitted within 24 hours of discovery of a known or
in NC suspected release
(DWM USE ONLY)
Suspected Contamination? (Y/N) _Y
Facility ID Number _4527
Incident # Risk (H,I,L,U)
Confirmed GW Contamination? (Y/N) _N
Date Leak Discovered _5/22/19
Received On Received By
Confirmed Soil Contamination ?(Y/N) _Y
Comm/Non-Commercial? _Comm_
Reported by (circle one): Phone, Fax or Report
Samples Taken?(Y/N) _Y
Reg/Non-regulated? _Reg
Region
Free Product? (Y/N) _N If Yes, State
Greatest Thickness
INCIDENT DESCRIPTION
Incident Name: Circle K 2708383
Address: 873 Old Charlotte Road SW
County: Cabarrus
City/Town: Concord
Zip Code: 28262
Regional Office (circle one): Ashe ' e, Mooresville, etteville,
Raleigh, Washington, Wilmington, Wins on- a em
Latitude (decimal degrees): 35.4088 Longitude (decimal degrees) :-80.5795
Obtained by:
X❑GPS
Briefly describe suspected or confirmed release: (including but not limited to: nature of release, date of release, amount
of release, amount of free product present and recovery efforts, initial responses conducted, impacts to receptors)
❑Topographic map
❑GIs Address matching
❑Other
❑Unknown
Describe location:
Soil contamination discovered during closure of UST system. All tanks/piping/dispensers removed.
Soil laboratory analytical results within pit and line trench 5/22/19 indicated elevated TPH-GRO.
Over -excavation performed to top of rock 12-16 ft BGS, groundwater not observed.
Removed approximately 100-tons soil. Amount of release unknown, no free product observed.
No sensitive receptors identified.
UST Pit
HOW RELEASE WAS DISCOVERED (Release code)
(Check one)
❑Release Detection Equipment or Methods ❑Visual/Odor ❑Groundwater Contamination
®During UST Closure/Removal ❑Water in Tank ❑Surface Water Contamination
❑Property Transfer ❑Water Supply Well Contamination ❑Other (specify)
SOURCE OF CONTAMINATION
Source of Release Cause of Release Tvpe of Release Product Type Released
(Check primary source) (Check primary cause) (Check one) (Check primary product type released)
® Tank ❑ Spill X❑ Petroleum X❑ Gasoline/ Diesel/ ❑ Diesel/Veg. Oil
❑ Piping ❑ Overfill ❑ Non -Petroleum Kerosene Blend
Heating Oil ❑ Vegetable Oil 100%
❑❑ Dispenser Corrosion Both
❑❑
❑ ❑
Other Petroleum E10 — E20Physical/Mechanical
❑ Submersible Turbine Pump ❑
Products
Damage Location ❑ E21 — E84
❑ Delivery Problem (Check one) Metals
❑
❑ Install Problem ❑ E85 — E99
❑ Spill Bucket ❑ Other Inorganics
❑ Other X❑Facility ❑Ethanol 100%
❑ Other ❑ Other Organics
X❑ Unknown ❑Residence ❑ E01 — E09
El Unknown
❑Other
Definitions presented on reverse
Definitions presented on reverse
Ownership
1. Municipal 2. Military 3. Unkno 4. Private 5. deral 6. County 7. State
Operation Type
1. Public Service 2. Agricultural 3. Residential 4. Education/Relig. 5. Industrial [ Commercial . Mining
UST Form 61 (02/19) Page 1 of 2

IMPACT ON DRINKING WATER SUPPLIES
Water Supply Wells Affected? 1. Yes 2. No 3. Unknown
Number of Water Supply Wells Affected
Water Supply Wells Contaminated: (Include Users Names, Addresses and Phone Numbers. Attach additional sheet if necessary)
1.
2.
3.
UST SYSTEM OWNER
UST Owner/Company
Circle K Stores, Inc.
Point of Contact
Address
Debrah Carl
2550 West Tyvola Road, Suite 200
City Charlotte
State
Zip Code
Telephone Number
NC
28217
704-583-5762
I
UST SYSTEM OPERATOR I
UST Operator/Company
Address
Circle K Stores, Inc.
2550 West Tyvola Road, Suite 200
City Charlotte
State
Zip Code
Telephone Number
NC
28217
704-583-5700
LANDOWNER AT LOCATION OF UST INCIDENT I
Landowner
Address
Hickory Woods, Inc.
PO Box 526
City
State
Zip Code
Telephone Number
Concord
NC
28026
N/A
I
Draw Sketch of Area (showing two major road intersections) or Attach Map
Person Reporting Incident Aaron Williamson
Company Crawford Environmental Services, Inc.
Telephone Number704-909-2911
Title Project Manager
Address 301 McCullough Drive, Suite 400, Charlotte, NC 28262
Date 5/23/19
UST Form 61 (02/19)
Page 2 of 2
Definitions of Sources
Tank: means the tank that stores the product and is part of the underground storage tank system
Piping: means the piping and connectors running from the tank or submersible turbine pump to the dispenser or other end -use equipment (Vent, vapor recovery, or fill
lines are excluded.)
Dispenser: includes the dispenser and the equipment used to connect the dispenser to the piping (e.g., a release from a suction pump or from components located above
the shear valve)
Submersible Turbine Pump (STP) Area includes the submersible turbine pump head (typically located in the tank sump), the line leak detector, and the piping that
connects the submersible turbine pump to the tank
Delivery Problem: identifies releases that occurred during product delivery to the tank. (Typical causes associated with this source are spills and overfills.)
Other: serves as the option to use when the release source is known but does not fit into one of the preceding categories (e.g., for releases from vent lines, vapor
recovery lines, and fill lines)
Unknown: identifies releases for which the source has not been determined
Definitions of Causes
Spill: use this cause when a spill occurs (e.g., when the delivery hose is disconnected from the tank fill pipe or when the nozzle is removed from the dispenser)
Overfill: use when an overfill occurs (e.g., overfills may occur from the fill pipe at the tank or when the nozzle fails to shut off at the dispenser)
Physical or Mechanical Damage: use for all types of physical or mechanical damage, except corrosion (e.g., puncture of tank or piping, loose fittings, broken
components, and components that have changed dimension)
Corrosion: use when a metal tank, piping, or other component has a release due to corrosion (e.g., for steel, corrosion takes the form of rust)
Installation Problem: use when the problem is determined to have occurred specifically because the UST system was not installed properly
Other: use this option when the cause is known but does not fit into one of the preceding categories (e.g., putting regulated substances into monitoring wells)
Unknown: use when the cause has not been determined

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APPENDIX B
ANALYTICAL REPORT

B'M
REDL
A(DRcY5
_
,
RAPID ENVIRONMENTAL DIAGNOSTICS
suits
Client: CRAWFORD ENVIRONMENTAL
Samples taken
Wednesday, May 22, 2019
Address:
Samples extracted
Wednesday, May 22, 2019
Samples analysed
Wednesday, May 22, 2019
Contact: AARON WILLIAMSON
Operator
CAROLINE STEVENS
Project: CIRCLE K 2708383
U04049
Matrix
Sample ID
Dilution
BTEX
GRO
DRO
TPH
Total
Aromatics
16 EPA
BaP
Ratios
HC Fingerprint Match
used
(C6 - C9)
(C5
- C10)
(C10 - C35)
(C5 - C35)
(C10-C35)
PAHs
%light
%mid
%
AL
heavy
s
STOCKPILE
27.4
<0.68
1.9
6.9
8.8
2
<0.22
<0.027
77.9
14.6
7.5
Deg.Fuel81%,(FCM)
s
SS-1
25.0
<0.63
2.2
<0.63
2.2
<0.13
<0.2
<0.025
99.2
0.8
0
Deg.Gas,(FCM)
s
SS-2
25.0
<0.63
<0.63
<0.63
<0.63
<0.13
<0.2
<0.025
0
100
0
Residual HC,(P)
s
SS-3
26.0
<0.65
3.4
10.5
13.9
4.1
<0.21
<0.026
78.3
15.8
5.8
V.Deg.Diesel 82.6%,(FCM)
s
SS-4
21.7
11.9
22.5
41.3
63.8
52.7
2
<0.022
94.8
4
1.3
Deg.Fuel67.1%,(FCM)
s
SS-5
11.2
<0.28
<0.28
<0.28
<0.28
<0.06
<0.09
<0.011
0
36.2
63.8
Residual HC,(BO)
s
SS-6
33.8
20.3
44
186.2
230.2
41.5
1.5
<0.034
96.6
1.6
1.8
Deg.Diesel 58.6%,(FCM)
s
SS-7
12.8
<0.32
<0.32
0.32
0.32
0.19
<0.1
<0.013
0
52.5
47.5
V.Deg.PHC 62.8%,(FCM),(P)
s SS-8
23.9
353.1
2435 244.5 2679.5 1229
47.4
<0.024 - -
- Deg.Gas,(FCM),(OCR)
s SS-9
1 22.4
<0.56
4.5 0.56 5.06 0.3
<0.18
<0.022 98.8 0.4
0.8 Deg.Gas,(FCM)
Initial
No
O 100.8 %
Results generated by a QED HC-1 analyser. Concentration values in mg/kg for soil samples and mg/L for water samples. Soil values are not corrected for moisture or stone content
Fingerprints provide a tentative hydrocarbon identification. The abbreviations
are:-
FCM = Results calculated using Fundamental Calibration
Mode : % = confidence for sample fingerprint match to library
(SBS) or (LBS) = Site Specific or Library Background Subtraction applied to result
: (PFM) = Poor Fingerprint Match : (T) = Turbid : (P) = Particulate present

QED Hydrocarbon Fingerprints
Project: CIRCLE K 2708383 5/22/2019
' STOCKPILE: Deg.Fuel 81%,(FCM)
SS Dl eg aGaG s,(FCM)
SS-3 : V.Deg.Diesel 82,61/o,(FCM)
SS-4 : Deg.Fuel 67.10/o,(FCM) 1
OEp
8833
SS-7 : V.Deg.PHC 62.8%,(FCM),(P)
I SS-8 : Deg.Gas,(FCM),(OCR) I
0,E0
63952
7001
QED
3438
OE
981
OEE:)I
700

B'M
REDL
A(DRcY5
_
,
RAPID ENVIRONMENTAL DIAGNOSTICS
suits
Client: CRAWFORD ENVIRONMENTAL
Samples taken
Wednesday, May 22, 2019
Address:
Samples extracted
Wednesday, May 22, 2019
Samples analysed
Wednesday, May 22, 2019
Contact: AARON WILLIAMSON
Operator
CAROLINE STEVENS
Project: CIRCLE K 2708383
U04049
Matrix
Sample ID
Dilution
BTEX
GRO
DRO
TPH
Total
Aromatics
16 EPA
BaP
Ratios
HC Fingerprint Match
used
(C6 - C9)
(C5
- C10)
(C10 - C35)
(C5 - C35)
(C10-C35)
PAHs
%light
%mid
%
im
heavy
S
SS-10
24.5
<1.2
4
24.1
28.1
0.83
<0.2
<0.025
99.5
0.3
0.2
Deg.Kerosene 80.8%,(FCM)
S
SS-11
21.7
26.2
150.2
32.1
182.3
10.5
0.38
<0.022
99.5
0.2
0.3
Deg Gas 69.3%,(FCM)
S
SS-12
20.2
2.2
4.4
5.4
9.8
0.37
<0.16
<0.02
99.5
0.4
0.1
Deg.Diesel57.5%,(FCM)
S
SS-13
28.3
375.6
2935
185.2
3120.2
117.7
4.7
<0.028
99.8
0.1
0.1
Deg.Gas 83.9%,(FCM),(OCR)
S
SS-14
30.2
<0.76
<0.76
<0.76
<0.76
<0.15
<0.24
<0.03
0
0
0
PHC not detected
S
SS-15
22.2
<0.56
2.9
0.56
3.46
0.47
<0.18
<0.022
89.8
4.7
5.6
V.Deg.PHC 73.8%,(FCM)
S
SS-16
22.4
24.4
118.1
20.5
138.6
0.66
<0.18
<0.022
99.7
0.1
0.2
Undeg.Gas + Waste Oil 71.9%,(FCM)
S SS-17
19.3
<0.48
2 7 9 0.46
<0.15
<0.019 94.5 5.5
0 Degraded Oil 63.6%,(FCM)
S SS-18
14.8
<0.37
<0.37 0.37 0.37 0.24
<0.12
<0.015 0 47.6
52.4 V.Deg.PHC 59.6%,(FCM)
s SS-19
1 17.9
<0.45
<0.45 <0.45 <0.45 <0.09
<0.14
<0.018 0 30.91
69.1 lResidual HC,(BO)
Initial VcMMul
LAIL, MM
~ FCIVI QC CheLK
97.5
O q El
Results generated by a QED HC-1 analyser. Concentration values in mg/kg for soil samples and mg/L for water samples. Soil values are not corrected for moisture or stone content
Fingerprints provide a tentative hydrocarbon identification. The abbreviations
are:-
FCM = Results calculated using Fundamental Calibration
Mode : % = confidence for sample fingerprint match to library
(SBS) or (LBS) = Site Specific or Library Background Subtraction applied to result
: (PFM) = Poor Fingerprint Match : (T) = Turbid : (P) = Particulate present

QED Hydrocarbon Fingerprints
Project: CIRCLE K 2708383 5/22/2019
SS-10 : Deg.Kerosene 80.8%,(FCM) I
SS-12 : Deg.Diesel 57.5%,(FCM)
SS-14 : PHC not detected
OE
7111
7001
(DE
700
SS-16 : Undeg.Gas+ Waste Oil 71.9%,(FCM)
n OE Q
/ 1n 2743
SS-17 : Degraded Oil 63.6%,(FCM)
SS-19 : Residual HC,(BO)
CEO
1947
C C
7001

_ REDL , B'M
RAPID ENVIRONMENTAL DIAGNOSTICS A(DRcY5
Client: CRAWFORD ENVIRONMENTAL Samples taken Wednesday, May 22, 2019
Address: Samples extracted Wednesday, May 22, 2019
Samples analysed Wednesday, May 22, 2019
Contact: AARON WILLIAMSON Operator CAROLINE STEVENS
Project: CIRCLE K 2708383
U04049
Dilution BTEX GRO DRO TPH Total 16 EPA
Matrix Sample ID used (C6 - C9) (C5 - C10) (C10 - C35) (C5 - C35) Aromatics PAHs BaP Ratios HC Fingerprint Match
(C10-C35) I I _
s
STOCKPILE 2
21.0
<0.52
<0.52
<0.52
<0.52
s
SS-6A
31.0
<0.77
564.6
336.7
901.3
s
LOAD 2
53.4
3.9
415.7
411.5
827.2
s
SS-613
20.5
<0.51
309.5
297.2
606.7
s
SS-13A
25.5
<0.64
>232.7
>124.1
>356.8
s
SS-8A
23.2
286.8
2135
150.4
2285.4
Initial MlbratoTZ1C check OK
light
% mid
heavy
<0.1
<0.17
<0.021
0
100
C
1796
69.9
<0.031
99
0.6
0.4
1280
47.7
<0.053
90.3
8.3
1.4
186.1
7.2
<0.02
-
-
>333.2
>13
<0.025
98.7
0.7
O.E
582
22.7
<0.0231
99.7
0.1
0.2
nal FCM QCTie fr O
not detected,(P)
Gas 85.5%,(FCM)
Fuel 62.4%,(FCM)
Gas, (FCM),(PFM),(OCR)
Gas 63.7%,(FCM)
Gas 82.8%,(FCM),(OCR)
Results generated by a QED HC-1 analyser. Concentration values in mg/kg for soil samples and mg/L for water samples. Soil values are not corrected for moisture or stone content
Fingerprints provide a tentative hydrocarbon identification. The abbreviations are:- FCM = Results calculated using Fundamental Calibration Mode : % = confidence for sample fingerprint match to library
(SBS) or (LBS) = Site Specific or Library Background Subtraction applied to result : (PFM) = Poor Fingerprint Match : (T) = Turbid : (P) = Particulate present

Project: CIRCLE K 2708383
LOAD 2 : Deg.Fuel 62.4%,(FCM)
55-13A : Deg.Gas 63.7%,(FCM)
QED Hydrocarbon Fingerprints
OE Q
31280
OE
240851
SS-6A : Deg.Gas 85.5%,(FCM)
55-6B : Deg Gas, (FCM),(PFM),(OCR)
SS-8A : Deg.Gas 82.8%,(FCM),(OCR)
5/22/2019
E ED
480,) I
OE Q
60167
406611

_
REDL , B'M
RAPID ENVIRONMENTAL DIAGNOSTICS
A(DRcY5
suits
Client: CRAWFORD ENVIRONMENT
Address:
Contact: AARON WILLIAMSON
Project: CIRCLE K 2708383
Samples taken
Samples extracted
Samples analysed
Operator
Wednesday, May 22, 2019
Wednesday, May 22, 2019
Wednesday, May 22, 2019
CAROLINE STEVENS
U04049
Matrix
im
Sample ID
Dilution
used
BTEX
(C6 - C9)
GRO
(C5 - C10)
DRO
(C10 - C35)
TPH
(C5 - C35)
Total
Aromatics
(C10-C35)
16 EPA
PAHs
BaP
Ratios
HC Fingerp
%light
% mid
heavy
s
SS-11A
21.8
<0.55
347.7
278.9
626.6
164.3
6.5
<0.022
99
0.7
0.3
Deg Gas 90.1%,(FCM),(PFM),(BO)
s
LOAD 3
26.3
<0.66
406.9
308.4
715.3
181.7
7.2
<0.026
99.1
0.7
0.3
Deg.Gas 90.1 %,(FCM),(PFM),(OCR)
s
SIDEWALL SE
28.0
<0.7
<0.7
0.7
0.7
0.39
<0.22
<0.028
91.1
3.9
5
Residual HC,(OCR)
s
L SIDEWALL NE
24.3
<0.61
10.2
11.4
21.6
7.2
0.3
<0.024
76.5
17.8
5.7
Deg Fuel 77.1%,(FCM)
s
L SIDEWALL SE
18.7
5.6
9.9
13.2
23.1
12.7
0.5
<0.019
92.5
5.4
2.1
Deg.Fuel 77.7%,(FCM)
s
L SIDEWALL NW
11.9
<0.3
<0.3
0.3
0.3
0.29
<0.09
<0.012
0
53.8
46.2
V.Deg.PHC 63.8%,(FCM),(P)
s
SIDEWALL NW
18.2
<0.45
<0.45
<0.45
<0.45
<0.09
<0.15
<0.018
0
0
0
PHC not detected
s
SIDEWALL NE
14.3
<0.36
<0.36
<0.36
<0.36
<0.07
<0.11
<0.014
0
0
0
,(FCM),(P)
s
SIDEWALL SW
25.7
<0.64
<0.64
<0.64
<0.64
<0.13
<0.21
<0.026
0
0
0
PHC not detected
Initial
O
99.1 %
Results generated by a QED HC-1 analyser. Concentration values in mg/kg for soil samples and mg/L for water samples. Soil values are not corrected for moisture or stone content
Fingerprints provide a tentative hydrocarbon identification. The abbreviations are:- FCM = Results calculated using Fundamental Calibration Mode : % = confidence for sample fingerprint match to library
(SBS) or (LBS) = Site Specific or Library Background Subtraction applied to result : (PFM) = Poor Fingerprint Match : (T) = Turbid : (P) = Particulate present

QED Hydrocarbon Fingerprints
Project: CIRCLE K 2708383 5/22/2019
SS-11A : Deg Gas 90.1%,(FCM),(PFM),(BO) I
SIDEWALL SE: Residual HC,(OCR)
LSIDEWALL SE: Deg.Fuel77.7%,(FCM)
0E )
54123
OE
7001
OE
42591
SIDEWALL NW: PHC not detected I
SIDEWALL SW: PHC not detected
OE
700
07
700
LOAD 3 : Deg.Gas 90.1%,(FCM),(PFM),(OCR)
QED
50215
L SIDEWALL NE : Deg Fuel 77.1%,(FCM)
(DE Q
8619
L SIDEWALL NW: V.Deg. PHC 63.8%,(FCM),(P)
17521