DERR-2025-001906

1
FACILITY ID# . PETROLEUM STORAGE TANK PERMANENT CLOSURE NOTICE …
State Use Only
Date Processed by
Date Mailed to LHD
LUST ID#
Date to LUST Review
Closure Notice prepared at the request of the owner/operator (identified below) by
of (company name) Phone #
Address City State Zip
TANKS CLOSED
Piping Only Tank #
Please complete for each tank
Type (Steel,FRP,etc.)
Date Installed
Capacity (Gallons)
Substance stored*
Date last operated
Date Closed
Removed/In Place/Change in
Service (CIS)?
*Indicate the specific substance stored in each tank to be closed (regular, unleaded, diesel, waste oil, etc.)
CLOSURE INFORMATION
Fuel was emptied Sludge was removed Tank was cleaned
Tank was: Purged Inerted Method Used:
Location of Closure Records:
For In-Place Closure: tanks filled with:
For Change-In-Service: Substance to be stored:
FACILITY INFORMATION
Tank Owner Phone #
Address City State Zip
Facility Name
Address City State Zip
Contact person Phone #
Total number of regulated petroleum storage tanks at this site before closure
Total number of regulated petroleum storage tanks at this site after closure
TANK REMOVER Name Cert. # TR Exp. Date
Company Phone #
Address City State Zip
SOIL/GROUNDWATER SAMPLER Name Cert. # GS Exp. Date
Company Phone #
Address City State Zip
Stantec Consulting Services, Inc. (801) 261- 0090
Josie Messersmith
2890 East Cottonwood Parkway, Suite 300 Salt Lake City UT 84121
7-Eleven, Inc.
PO Box 711 (Loc. 0148)Dallas TX 75221-0711
7-Eleven Store No. 33981
425 North 700 West Centerville UT 84014
4
4
2 31
FRP FRP FRP
Piping 5/1/1999 Piping 5/1/1999 Piping 5/1/1999
12,000 10,000 10,000
GASOLINE GASOLINE DIESEL
12/16/2024 12/16/2024 12/16/2024
currently in use currently in use
Taber Dehart 0418 3/15/2025
Westech Fuel Equipment [phone]
PO Box 57307 Salt Lake City UT 84157
Steve Yorgason
Stantec Consulting Services, Inc.[phone]
2890 East Cottonwood Parkway, Suite 300 Salt Lake City UT 84121
Not Applicable
NA NA NA
Stantec Consulting Services Inc.
NA
NA
3000242
Marc Westfall (214) 415 -0146
[phone]
currently in use
1630 04/15/2025
X 4
FRP
Piping 5/1/1999
10,000 10,000
GASOLINE
currently in use
12/16/2024
STPs, piping, dispensers, UDCs, and vent lines were removed and replaced.
GH3-17-2025
2
DISPOSAL SITES USED
Location Name Contact Name Phone # Date Amount
Tank(s) Tank #
Product From Tank(s)
Contaminated Water
From Tank Cleaning
Sludge
Contaminated Water
From Excavation
Contaminated Soil
SITE ASSESSMENT
Complete the Facility Site Plat (Closure Notice) and Sample Information Table (Closure Notice) on pages 3 and 4 to show the locations,
depths, and other information on all soil/groundwater samples taken for closure. The samples must be consistently identified by sample ID #
on the site plat, table, and lab analysis report.
Completed Facility Site Plat (Closure Notice) is attached.
The following must be included (enter the distance, and direction (N,S,E,W) from the area of contamination or, where applicable,
use OH for overhead, NP for not present):
Water Line Sewer Line Telephone
Samples were properly: Collected Labeled Packaged Transported
Samples were in sight of the person in custody at all times or in a secured locked place.
I certify under penalty of law that the closure site assessment at this facility was conducted in accordance with 40 CFR
280.52, 40 CFR 280.72, and U.A.C. R311-205, and that any additional samples required by 40 CFR 280.52, 40 CFR 280.72 and
U.A.C. R311-205-2(1)(a) were properly collected.
Signature of Certified Groundwater/Soil Sampler
Full name of Certified Sampler Date
If contamination at the facility is confirmed, any person providing remedial assistance for a fee must be a Certified UST Consultant. The
Certified UST Consultant providing assistance is:
CERTIFIED UST CONSULTANT
Name Cert. #CC Exp. Date
Company Address
City State Zip Phone #
Please explain any unusual circumstances that occurred during the site assessment or closure:
Stantec Consulting Services Inc. 2890 East Cottonwood Parkway, Suite 33
Salt Lake City UT 83279 801-261-0090
NA
NA --------
NA
NA
NA
--
--
--
--
--
----
--
--
--
--
--
NA ----
X
----
X X X X
X
X
X
X
NP NP NP Natural Gas NP Storm Drain UK
Completed Sample Information Table (Closure Notice) is attached.
Certified lab analytical environmental sample results are attached.
Unified Soil Classification (USC) sample results are attached.
Chain of Custody form is attached.
X
Anna Skinner 0271 12/31/2026
Steve Yorgason 2-25-2025
----
Soil sample SS-14 contained detectable napthalene and GRO, with levels below ISLs. Similarly, SS-22 had a detectable level of DRO that was below
ISLs. Approximately 1 foot of pea gravel was present at the bottom of the piping trench. Samples were collected 8 to 10 inches below the bottom of the
pea gravel. As indicated on the attached site-plat, an additional soil sample (SS-23) was completed due to a change in the excavation plan.
--
3
Facility Site Plat (Closure Notice)
The site plat must be drawn to an appropriate identified scale. It must show planned sampling locations, substances stored in tanks, and
other relevant information. Tank and sample identification numbers must be consistent with the information given on p. 1 and 4 of the
Closure Notice.
Facility ID: Drawn By: Date:
X = Sample locations (SS-#, WS-#, USC-#) Site Plat Must Indicate Actual Locations Of:
0 = Monitoring Wells (MW-#) √Current & former tanks, piping & dispensers
= Soil boring (SB-#), or Geoprobe Boring (GP-#) √ Location of all samples to be taken
●= Water Wells (domestic, livestock, etc.)√ Buildings, fences, & property boundaries
Slope of Surface Topography: (N,NW,W,SW,S,SE,E,NE)√ Utility conduits (sewers, gas, water, storm drains, electrical, etc.)
Land Use At Site: Residential Commercial Industrial √ Depth to groundwater (if encountered)
Surrounding Land: Residential Commercial Industrial √Excavations, GW monitoring wells & soil stockpiles
North Scale: 1”= Feet
SEE ATTACHED SITE PLAT
CA
R
WA
S
H
STORAGE
CURRENTUSTs
DISPENSER
ISLANDS
LA
N
D
S
C
A
P
I
N
G
IN
T
E
R
S
T
A
T
E

I
-
1
5
70
0

W
E
S
T
425 NORTH
DRIVE-THRU
S
S S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20 CANOPY
In-n-Out Burger
PHILLIPS 66
FORMER
STORE NO. 33981
7-ELEVEN
E E E E E
G
G
G G G G G G G
E
E E E E E
E
E
SA SA
SA
SA
SA
SA SA SA
W
W
W
W W W W W W W
N
FOR:
JOB NUMBER:DRAWN BY:CHECKED BY:APPROVED BY:DATE:
FIGURE:
1
JR/AS203724144 10/24/2024
STORE NO. 33981
425 NORTH 700 WEST
CENTERVILLE, UTAH
FILEPATH:U:\203724144\05_report_deliv\deliverable\cp\cp_site_plan_33981.pdf
SITE PLAN
ELEVEN
2890 E COTTONWOOD PKWY, STE 300
SALT LAKE CITY, UTAH
PHONE: [phone]
SS-4/USC-2
SS-1
SS-2/USC-1
SS-3
SS-5
SS-6
SS-7 SS-8
SS-9 SS-10
SS-11 SS-12
SS-13 SS-14
SS-15
SS-16 SS-17
SS-18 SS-19
SS-20
SS-21
SS-22
LEGEND
SA
CLOSURE SOIL SAMPLE
G
E
W
SEWER
ELECTRICAL
NATURAL GAS
WATER
0 8040
APPROXIMATE SCALE IN FEET
No warranty is made by Stantec Consulting Services Inc. as to the accuracy, reliability, or completeness of these data. Original data were
compiled from various sources. This information may not meet National Map Accuracy Standards. This product was developed
electronically, and may be updated without notification. Any reproduction may result in a loss of scale and or information.
SS-23
4
SAMPLE INFORMATION TABLE (Closure Notice)
Complete table for all samples that were taken for closure. Sample ID numbers on the table must be consistent with the sample ID
numbers given on the site plat and in the lab analysis report.
Sample
#
Substance
stored in tank
Sample
type1 Depth2 Compounds3 Analysis method(s)4
SS-1
SS-2
SS-3
SS-4
SS-5
SS-11
SS-12
SS-6
SS-9
SS-13
SS-10
gasoline and diesel
gasoline and diesel
gasoline and diesel
gasoline and diesel
gasoline and diesel
gasoline and diesel
gasoline and diesel
gasoline and diesel
gasoline and diesel
gasoline and diesel
gasoline and diesel
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
3
3
3
3
3
3
3
3
3
3
3
MBTEXN, GRO, and DRO
MBTEXN, GRO, and DRO
MBTEXN, GRO, and DRO
MBTEXN, GRO, and DRO
MBTEXN, GRO, and DRO
MBTEXN, GRO, and DRO
MBTEXN, GRO, and DRO
MBTEXN, GRO, and DRO
MBTEXN, GRO, and DRO
MBTEXN, GRO, and DRO
MBTEXN, GRO, and DRO
8260 and 8015
8260 and 8015
8260 and 8015
8260 and 8015
8260 and 8015
8260 and 8015
8260 and 8015
8260 and 8015
8260 and 8015
8260 and 8015
8260 and 8015
SS-7
SS-8
gasoline and diesel
gasoline and diesel
SS
SS
3
3
MBTEXN, GRO, and DRO
MBTEXN, GRO, and DRO
8260 and 8015
8260 and 8015
SS-14
SS-15
SS-16
SS-18
SS-19
SS-20
gasoline and diesel
gasoline and diesel
gasoline and diesel
gasoline and diesel
gasoline and diesel
gasoline and diesel
SS
SS
SS
SS
SS
SS
3
3
3
3
3
3
8260 and 8015
8260 and 8015
8260 and 8015
MBTEXN, GRO and DRO
MBTEXN, GRO and DRO
MBTEXN, GRO and DRO
MBTEXN, GRO and DRO
MBTEXN, GRO and DRO
MBTxEXN, GRO and DRO
8260 and 8015
8260 and 8015
8260 and 8015
SS-17 SS 3 MBTEXN, GRO and DRO 8260 and 8015
gasoline and diesel
SS-21 gasoline and diesel SS MBTEXN, GRO and DRO 8260 and 8015
SAMPLE INFORMATION CONTINUES ON PAGE 5
3
5
SAMPLE INFORMATION TABLE (Closure Notice)
Complete table for all samples that were taken for closure. Sample ID numbers on the table must be consistent with the sample ID
numbers given on the site plat and in the lab analysis report.
1 Soil (SS), Groundwater (GW), or Unified Soil Classification (USC).2 Final depth (in feet) below grade at which samples were taken.3 Contaminant compound(s) analyzed for each sample (TPH, BTEXN, O&G, etc).
4 Appropriate analysis methods for contaminant compound(s) in each sample
State Certified Laboratory used
Address City State Zip
Contact Person Phone #
I certify under penalty of law that I am the Owner of the tank(s) described above and that I am familiar with the information on this form
and that it is true, accurate and complete and further, that the procedures described herein were followed during tank closure.
Signature of PST owner
Full Name of owner Date
Return completed Closure Notice form, Facility Site Plat and Sample Information Table, Soil/Groundwater sample lab analysis results,
USC sample results, and Chain of Custody form within 90 days of PST Closure to:
Mailing Address:
State of Utah Dept. of Environmental Quality DERR / PST Section P.O. Box 144840 Salt Lake City, Utah 84114-4840
Sample
#
Substance
stored in tank
Sample
type1 Depth2 Compounds3 Analysis method(s)4
Street Address:
Multi Agency State Office Building 195 North 1950 West (First Floor) Salt Lake City, Utah 84116
SS-22
USC-1
USC-2
gasoline and diesel
gasoline and diesel
gasoline and diesel
SS
USC
3
3
3
MBTEXN, GRO, and DRO
MBTEXN, GRO, and DRO
8260 and 8015
ASTM-D2487
Chemtech-Ford
9632 South 500 West Sandy UT 84070
Mark Broadhead [phone]
Marc Westfall 2/19/25
SS-23 SS 8260 and 8015
gasoline and diesel USC 3
USC
USC ASTM-D2487
The analyses presented on this report were performed in accordance with the
National Environmental Laboratory Accreditation Program (NELAP) unless
noted in the comments, flags, or case narrative. If the report is to be used for
regulatory compliance, it should be presented in its entirety, and not be
altered.
Client Service Contact: 801.262.7299
Stantec Consulting Inc.
Attn: Anna Skinner
2890 East Cottonwood Parkway, Suite 300
Salt Lake City, UT 84121
Work Order: 24L1259
Project: 7-Eleven 33981 (Centerville)
12/30/2024
Approved By:
Mark Broadhead, Project Manager
9632 South 500 West Sandy, Utah 84070
Serving the Intermountain West since 1953
801.262.7299 Main 866.792.0093 Fax www.ChemtechFord.com
Page 1 of 34
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Stantec Consulting Inc.
Anna Skinner
2890 East Cottonwood Parkway, Suite 300
Salt Lake City, UT 84121
PO#:
Receipt:
Date Reported:
Project Name:
203724144.1401.0400
12/16/24 12:23 @ 2.9 °C
12/30/2024
7-Eleven 33981 (Centerville)
Sample ID: SS-1
Lab ID: 24L1259-01Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 12/16/24 8:50
Preparation
Date/Time
Sampled By: Steve Yorgason
Minimum
Reporting
Limit MethodResult
Inorganic
%12/17/2412/17/240.1 CTF800085.9Total Solids
MBTEXn
mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDBenzene
mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 12/19/2412/19/240.02 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDNaphthalene
mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDToluene
mg/kg dry 12/19/2412/19/240.08 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 12/19/2412/19/240.277 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 12/19/2412/18/2458EPA 8015 CNDDiesel Range Organics
Project Name: 7-Eleven 33981 (Centerville)CtF WO#: 24L1259
www.ChemtechFord.com
Page 2 of 32Page 2 of 34
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Stantec Consulting Inc.
Anna Skinner
2890 East Cottonwood Parkway, Suite 300
Salt Lake City, UT 84121
PO#:
Receipt:
Date Reported:
Project Name:
203724144.1401.0400
12/16/24 12:23 @ 2.9 °C
12/30/2024
7-Eleven 33981 (Centerville)
Sample ID: SS-2
Lab ID: 24L1259-02Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 12/16/24 9:00
Preparation
Date/Time
Sampled By: Steve Yorgason
Minimum
Reporting
Limit MethodResult
Inorganic
%12/17/2412/17/240.1 CTF800088.4Total Solids
MBTEXn
mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDBenzene
mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 12/19/2412/19/240.02 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDNaphthalene
mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDToluene
mg/kg dry 12/19/2412/19/240.08 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 12/19/2412/19/240.280 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 12/19/2412/18/2457EPA 8015 CNDDiesel Range Organics
Project Name: 7-Eleven 33981 (Centerville)CtF WO#: 24L1259
www.ChemtechFord.com
Page 3 of 32Page 3 of 34
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Stantec Consulting Inc.
Anna Skinner
2890 East Cottonwood Parkway, Suite 300
Salt Lake City, UT 84121
PO#:
Receipt:
Date Reported:
Project Name:
203724144.1401.0400
12/16/24 12:23 @ 2.9 °C
12/30/2024
7-Eleven 33981 (Centerville)
Sample ID: SS-3
Lab ID: 24L1259-03Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 12/16/24 9:15
Preparation
Date/Time
Sampled By: Steve Yorgason
Minimum
Reporting
Limit MethodResult
Inorganic
%12/17/2412/17/240.1 CTF800079.5Total Solids
MBTEXn
mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDBenzene
mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 12/19/2412/19/240.02 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDNaphthalene
mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDToluene
mg/kg dry 12/19/2412/19/240.09 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 12/19/2412/19/240.294 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 12/19/2412/18/2463EPA 8015 CNDDiesel Range Organics
Project Name: 7-Eleven 33981 (Centerville)CtF WO#: 24L1259
www.ChemtechFord.com
Page 4 of 32Page 4 of 34
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Stantec Consulting Inc.
Anna Skinner
2890 East Cottonwood Parkway, Suite 300
Salt Lake City, UT 84121
PO#:
Receipt:
Date Reported:
Project Name:
203724144.1401.0400
12/16/24 12:23 @ 2.9 °C
12/30/2024
7-Eleven 33981 (Centerville)
Sample ID: SS-4
Lab ID: 24L1259-04Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 12/16/24 8:25
Preparation
Date/Time
Sampled By: Steve Yorgason
Minimum
Reporting
Limit MethodResult
Inorganic
%12/17/2412/17/240.1 CTF800095.7Total Solids
MBTEXn
mg/kg dry 12/19/2412/19/240.008 EPA 8260D/5030BNDBenzene
mg/kg dry 12/19/2412/19/240.02 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 12/19/2412/19/240.02 EPA 8260D/5030BNDNaphthalene
mg/kg dry 12/19/2412/19/240.02 EPA 8260D/5030BNDToluene
mg/kg dry 12/19/2412/19/240.06 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 12/19/2412/19/240.200 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 12/19/2412/18/2450EPA 8015 CNDDiesel Range Organics
Project Name: 7-Eleven 33981 (Centerville)CtF WO#: 24L1259
www.ChemtechFord.com
Page 5 of 32Page 5 of 34
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Stantec Consulting Inc.
Anna Skinner
2890 East Cottonwood Parkway, Suite 300
Salt Lake City, UT 84121
PO#:
Receipt:
Date Reported:
Project Name:
203724144.1401.0400
12/16/24 12:23 @ 2.9 °C
12/30/2024
7-Eleven 33981 (Centerville)
Sample ID: SS-5
Lab ID: 24L1259-05Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 12/16/24 8:30
Preparation
Date/Time
Sampled By: Steve Yorgason
Minimum
Reporting
Limit MethodResult
Inorganic
%12/17/2412/17/240.1 CTF800094.8Total Solids
MBTEXn
mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDBenzene
mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 12/19/2412/19/240.02 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDNaphthalene
mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDToluene
mg/kg dry 12/19/2412/19/240.08 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 12/19/2412/19/240.261 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 12/19/2412/18/2453EPA 8015 CNDDiesel Range Organics
Project Name: 7-Eleven 33981 (Centerville)CtF WO#: 24L1259
www.ChemtechFord.com
Page 6 of 32Page 6 of 34
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Stantec Consulting Inc.
Anna Skinner
2890 East Cottonwood Parkway, Suite 300
Salt Lake City, UT 84121
PO#:
Receipt:
Date Reported:
Project Name:
203724144.1401.0400
12/16/24 12:23 @ 2.9 °C
12/30/2024
7-Eleven 33981 (Centerville)
Sample ID: SS-6
Lab ID: 24L1259-06Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 12/16/24 8:35
Preparation
Date/Time
Sampled By: Steve Yorgason
Minimum
Reporting
Limit MethodResult
Inorganic
%12/17/2412/17/240.1 CTF800094.4Total Solids
MBTEXn
mg/kg dry 12/19/2412/19/240.008 EPA 8260D/5030BNDBenzene
mg/kg dry 12/19/2412/19/240.02 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 12/19/2412/19/240.02 EPA 8260D/5030BNDNaphthalene
mg/kg dry 12/19/2412/19/240.02 EPA 8260D/5030BNDToluene
mg/kg dry 12/19/2412/19/240.06 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 12/19/2412/19/240.205 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 12/19/2412/18/2453EPA 8015 CNDDiesel Range Organics
Project Name: 7-Eleven 33981 (Centerville)CtF WO#: 24L1259
www.ChemtechFord.com
Page 7 of 32Page 7 of 34
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Stantec Consulting Inc.
Anna Skinner
2890 East Cottonwood Parkway, Suite 300
Salt Lake City, UT 84121
PO#:
Receipt:
Date Reported:
Project Name:
203724144.1401.0400
12/16/24 12:23 @ 2.9 °C
12/30/2024
7-Eleven 33981 (Centerville)
Sample ID: SS-7
Lab ID: 24L1259-07Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 12/16/24 10:30
Preparation
Date/Time
Sampled By: Steve Yorgason
Minimum
Reporting
Limit MethodResult
Inorganic
%12/17/2412/17/240.1 CTF800089.1Total Solids
MBTEXn
mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDBenzene
mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 12/19/2412/19/240.02 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDNaphthalene
mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDToluene
mg/kg dry 12/19/2412/19/240.08 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 12/19/2412/19/240.270 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 12/19/2412/18/2456EPA 8015 CNDDiesel Range Organics
Project Name: 7-Eleven 33981 (Centerville)CtF WO#: 24L1259
www.ChemtechFord.com
Page 8 of 32Page 8 of 34
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Stantec Consulting Inc.
Anna Skinner
2890 East Cottonwood Parkway, Suite 300
Salt Lake City, UT 84121
PO#:
Receipt:
Date Reported:
Project Name:
203724144.1401.0400
12/16/24 12:23 @ 2.9 °C
12/30/2024
7-Eleven 33981 (Centerville)
Sample ID: SS-8
Lab ID: 24L1259-08Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 12/16/24 8:40
Preparation
Date/Time
Sampled By: Steve Yorgason
Minimum
Reporting
Limit MethodResult
Inorganic
%12/17/2412/17/240.1 CTF800092.3Total Solids
MBTEXn
mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDBenzene
mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 12/19/2412/19/240.02 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDNaphthalene
mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDToluene
mg/kg dry 12/19/2412/19/240.08 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 12/19/2412/19/240.266 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 12/19/2412/18/2454EPA 8015 CNDDiesel Range Organics
Project Name: 7-Eleven 33981 (Centerville)CtF WO#: 24L1259
www.ChemtechFord.com
Page 9 of 32Page 9 of 34
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Stantec Consulting Inc.
Anna Skinner
2890 East Cottonwood Parkway, Suite 300
Salt Lake City, UT 84121
PO#:
Receipt:
Date Reported:
Project Name:
203724144.1401.0400
12/16/24 12:23 @ 2.9 °C
12/30/2024
7-Eleven 33981 (Centerville)
Sample ID: SS-9
Lab ID: 24L1259-09Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 12/16/24 10:25
Preparation
Date/Time
Sampled By: Steve Yorgason
Minimum
Reporting
Limit MethodResult
Inorganic
%12/17/2412/17/240.1 CTF800088.1Total Solids
MBTEXn
mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDBenzene
mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 12/19/2412/19/240.02 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDNaphthalene
mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDToluene
mg/kg dry 12/19/2412/19/240.08 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 12/19/2412/19/240.281 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 12/19/2412/18/2457EPA 8015 CNDDiesel Range Organics
Project Name: 7-Eleven 33981 (Centerville)CtF WO#: 24L1259
www.ChemtechFord.com
Page 10 of 32Page 10 of 34
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Stantec Consulting Inc.
Anna Skinner
2890 East Cottonwood Parkway, Suite 300
Salt Lake City, UT 84121
PO#:
Receipt:
Date Reported:
Project Name:
203724144.1401.0400
12/16/24 12:23 @ 2.9 °C
12/30/2024
7-Eleven 33981 (Centerville)
Sample ID: SS-10
Lab ID: 24L1259-10Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 12/16/24 8:45
Preparation
Date/Time
Sampled By: Steve Yorgason
Minimum
Reporting
Limit MethodResult
Inorganic
%12/17/2412/17/240.1 CTF800085.6Total Solids
MBTEXn
mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDBenzene
mg/kg dry 12/19/2412/19/240.02 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 12/19/2412/19/240.02 EPA 8260D/5030BNDNaphthalene
mg/kg dry 12/19/2412/19/240.02 EPA 8260D/5030BNDToluene
mg/kg dry 12/19/2412/19/240.07 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 12/19/2412/19/240.239 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 12/19/2412/18/2458EPA 8015 CNDDiesel Range Organics
Project Name: 7-Eleven 33981 (Centerville)CtF WO#: 24L1259
www.ChemtechFord.com
Page 11 of 32Page 11 of 34
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Stantec Consulting Inc.
Anna Skinner
2890 East Cottonwood Parkway, Suite 300
Salt Lake City, UT 84121
PO#:
Receipt:
Date Reported:
Project Name:
203724144.1401.0400
12/16/24 12:23 @ 2.9 °C
12/30/2024
7-Eleven 33981 (Centerville)
Sample ID: SS-11
Lab ID: 24L1259-11Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 12/16/24 10:20
Preparation
Date/Time
Sampled By: Steve Yorgason
Minimum
Reporting
Limit MethodResult
Inorganic
%12/17/2412/17/240.1 CTF800094.7Total Solids
MBTEXn
mg/kg dry 12/19/2412/19/240.009 EPA 8260D/5030BNDBenzene
mg/kg dry 12/19/2412/19/240.02 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 12/19/2412/19/240.02 EPA 8260D/5030BNDNaphthalene
mg/kg dry 12/19/2412/19/240.02 EPA 8260D/5030BNDToluene
mg/kg dry 12/19/2412/19/240.07 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 12/19/2412/19/240.220 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 12/19/2412/18/2453EPA 8015 CNDDiesel Range Organics
Project Name: 7-Eleven 33981 (Centerville)CtF WO#: 24L1259
www.ChemtechFord.com
Page 12 of 32Page 12 of 34
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Stantec Consulting Inc.
Anna Skinner
2890 East Cottonwood Parkway, Suite 300
Salt Lake City, UT 84121
PO#:
Receipt:
Date Reported:
Project Name:
203724144.1401.0400
12/16/24 12:23 @ 2.9 °C
12/30/2024
7-Eleven 33981 (Centerville)
Sample ID: SS-12
Lab ID: 24L1259-12Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 12/16/24 8:55
Preparation
Date/Time
Sampled By: Steve Yorgason
Minimum
Reporting
Limit MethodResult
Inorganic
%12/17/2412/17/240.1 CTF800093.9Total Solids
MBTEXn
mg/kg dry 12/19/2412/19/240.01 EPA 8260D/5030BNDBenzene
mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 12/19/2412/19/240.02 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDNaphthalene
mg/kg dry 12/19/2412/19/240.03 EPA 8260D/5030BNDToluene
mg/kg dry 12/19/2412/19/240.08 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 12/19/2412/19/240.261 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 12/19/2412/18/2453EPA 8015 CNDDiesel Range Organics
Project Name: 7-Eleven 33981 (Centerville)CtF WO#: 24L1259
www.ChemtechFord.com
Page 13 of 32Page 13 of 34
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Stantec Consulting Inc.
Anna Skinner
2890 East Cottonwood Parkway, Suite 300
Salt Lake City, UT 84121
PO#:
Receipt:
Date Reported:
Project Name:
203724144.1401.0400
12/16/24 12:23 @ 2.9 °C
12/30/2024
7-Eleven 33981 (Centerville)
Sample ID: SS-13
Lab ID: 24L1259-13Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 12/16/24 10:05
Preparation
Date/Time
Sampled By: Steve Yorgason
Minimum
Reporting
Limit MethodResult
Inorganic
%12/17/2412/17/240.1 CTF800090.5Total Solids
MBTEXn
mg/kg dry 12/21/2412/21/240.01 EPA 8260D/5030BNDBenzene
mg/kg dry 12/21/2412/21/240.03 EPA 8260D/5030BNDEthylbenzene
mg/kg dry J-LOW-L12/21/2412/21/240.02 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 12/21/2412/21/240.03 EPA 8260D/5030BNDNaphthalene
mg/kg dry 12/21/2412/21/240.03 EPA 8260D/5030BNDToluene
mg/kg dry 12/21/2412/21/240.08 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 12/21/2412/21/240.276 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 12/19/2412/18/2455EPA 8015 CNDDiesel Range Organics
Project Name: 7-Eleven 33981 (Centerville)CtF WO#: 24L1259
www.ChemtechFord.com
Page 14 of 32Page 14 of 34
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Stantec Consulting Inc.
Anna Skinner
2890 East Cottonwood Parkway, Suite 300
Salt Lake City, UT 84121
PO#:
Receipt:
Date Reported:
Project Name:
203724144.1401.0400
12/16/24 12:23 @ 2.9 °C
12/30/2024
7-Eleven 33981 (Centerville)
Sample ID: SS-14
Lab ID: 24L1259-14Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 12/16/24 9:05
Preparation
Date/Time
Sampled By: Steve Yorgason
Minimum
Reporting
Limit MethodResult
Inorganic
%12/17/2412/17/240.1 CTF800082.5Total Solids
MBTEXn
mg/kg dry 12/24/2412/24/240.01 EPA 8260D/5030BNDBenzene
mg/kg dry 12/24/2412/24/240.03 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 12/24/2412/24/240.02 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 12/24/2412/24/240.03 EPA 8260D/5030B0.04Naphthalene
mg/kg dry 12/24/2412/24/240.03 EPA 8260D/5030BNDToluene
mg/kg dry 12/24/2412/24/240.09 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 12/24/2412/24/240.286 EPA 8260B/C 5035A/[CALC]0.332Gasoline Range Organics
Diesel Range
mg/kg dry 12/19/2412/18/2461EPA 8015 CNDDiesel Range Organics
Project Name: 7-Eleven 33981 (Centerville)CtF WO#: 24L1259
www.ChemtechFord.com
Page 15 of 32Page 15 of 34
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Stantec Consulting Inc.
Anna Skinner
2890 East Cottonwood Parkway, Suite 300
Salt Lake City, UT 84121
PO#:
Receipt:
Date Reported:
Project Name:
203724144.1401.0400
12/16/24 12:23 @ 2.9 °C
12/30/2024
7-Eleven 33981 (Centerville)
Sample ID: SS-15
Lab ID: 24L1259-15Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 12/16/24 9:10
Preparation
Date/Time
Sampled By: Steve Yorgason
Minimum
Reporting
Limit MethodResult
Inorganic
%12/17/2412/17/240.1 CTF800089.7Total Solids
MBTEXn
mg/kg dry 12/21/2412/21/240.01 EPA 8260D/5030BNDBenzene
mg/kg dry 12/21/2412/21/240.02 EPA 8260D/5030BNDEthylbenzene
mg/kg dry J-LOW-L12/21/2412/21/240.01 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 12/21/2412/21/240.02 EPA 8260D/5030BNDNaphthalene
mg/kg dry 12/21/2412/21/240.02 EPA 8260D/5030BNDToluene
mg/kg dry 12/21/2412/21/240.07 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 12/21/2412/21/240.238 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 12/19/2412/18/2456EPA 8015 CNDDiesel Range Organics
Project Name: 7-Eleven 33981 (Centerville)CtF WO#: 24L1259
www.ChemtechFord.com
Page 16 of 32Page 16 of 34
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Stantec Consulting Inc.
Anna Skinner
2890 East Cottonwood Parkway, Suite 300
Salt Lake City, UT 84121
PO#:
Receipt:
Date Reported:
Project Name:
203724144.1401.0400
12/16/24 12:23 @ 2.9 °C
12/30/2024
7-Eleven 33981 (Centerville)
Sample ID: SS-16
Lab ID: 24L1259-16Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 12/16/24 10:00
Preparation
Date/Time
Sampled By: Steve Yorgason
Minimum
Reporting
Limit MethodResult
Inorganic
%12/17/2412/17/240.1 CTF800084.5Total Solids
MBTEXn
mg/kg dry 12/21/2412/21/240.009 EPA 8260D/5030BNDBenzene
mg/kg dry 12/21/2412/21/240.02 EPA 8260D/5030BNDEthylbenzene
mg/kg dry J-LOW-L12/21/2412/21/240.01 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 12/21/2412/21/240.02 EPA 8260D/5030BNDNaphthalene
mg/kg dry 12/21/2412/21/240.02 EPA 8260D/5030BNDToluene
mg/kg dry 12/21/2412/21/240.07 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 12/21/2412/21/240.223 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 12/19/2412/18/2459EPA 8015 CNDDiesel Range Organics
Project Name: 7-Eleven 33981 (Centerville)CtF WO#: 24L1259
www.ChemtechFord.com
Page 17 of 32Page 17 of 34
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Stantec Consulting Inc.
Anna Skinner
2890 East Cottonwood Parkway, Suite 300
Salt Lake City, UT 84121
PO#:
Receipt:
Date Reported:
Project Name:
203724144.1401.0400
12/16/24 12:23 @ 2.9 °C
12/30/2024
7-Eleven 33981 (Centerville)
Sample ID: SS-17
Lab ID: 24L1259-17Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 12/16/24 9:20
Preparation
Date/Time
Sampled By: Steve Yorgason
Minimum
Reporting
Limit MethodResult
Inorganic
%12/17/2412/17/240.1 CTF800091.1Total Solids
MBTEXn
mg/kg dry 12/21/2412/21/240.01 EPA 8260D/5030BNDBenzene
mg/kg dry 12/21/2412/21/240.03 EPA 8260D/5030BNDEthylbenzene
mg/kg dry J-LOW-L12/21/2412/21/240.02 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 12/21/2412/21/240.03 EPA 8260D/5030BNDNaphthalene
mg/kg dry 12/21/2412/21/240.03 EPA 8260D/5030BNDToluene
mg/kg dry 12/21/2412/21/240.08 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 12/21/2412/21/240.274 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 12/19/2412/18/2455EPA 8015 CNDDiesel Range Organics
Project Name: 7-Eleven 33981 (Centerville)CtF WO#: 24L1259
www.ChemtechFord.com
Page 18 of 32Page 18 of 34
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Stantec Consulting Inc.
Anna Skinner
2890 East Cottonwood Parkway, Suite 300
Salt Lake City, UT 84121
PO#:
Receipt:
Date Reported:
Project Name:
203724144.1401.0400
12/16/24 12:23 @ 2.9 °C
12/30/2024
7-Eleven 33981 (Centerville)
Sample ID: SS-18
Lab ID: 24L1259-18Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 12/16/24 9:55
Preparation
Date/Time
Sampled By: Steve Yorgason
Minimum
Reporting
Limit MethodResult
Inorganic
%12/17/2412/17/240.1 CTF800084.6Total Solids
MBTEXn
mg/kg dry 12/21/2412/21/240.01 EPA 8260D/5030BNDBenzene
mg/kg dry 12/21/2412/21/240.03 EPA 8260D/5030BNDEthylbenzene
mg/kg dry J-LOW-L12/21/2412/21/240.02 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 12/21/2412/21/240.03 EPA 8260D/5030BNDNaphthalene
mg/kg dry 12/21/2412/21/240.03 EPA 8260D/5030BNDToluene
mg/kg dry 12/21/2412/21/240.08 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 12/21/2412/21/240.268 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 12/19/2412/18/2459EPA 8015 CNDDiesel Range Organics
Project Name: 7-Eleven 33981 (Centerville)CtF WO#: 24L1259
www.ChemtechFord.com
Page 19 of 32Page 19 of 34
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Stantec Consulting Inc.
Anna Skinner
2890 East Cottonwood Parkway, Suite 300
Salt Lake City, UT 84121
PO#:
Receipt:
Date Reported:
Project Name:
203724144.1401.0400
12/16/24 12:23 @ 2.9 °C
12/30/2024
7-Eleven 33981 (Centerville)
Sample ID: SS-19
Lab ID: 24L1259-19Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 12/16/24 9:30
Preparation
Date/Time
Sampled By: Steve Yorgason
Minimum
Reporting
Limit MethodResult
Inorganic
%12/17/2412/17/240.1 CTF800080.5Total Solids
MBTEXn
mg/kg dry 12/21/2412/21/240.01 EPA 8260D/5030BNDBenzene
mg/kg dry 12/21/2412/21/240.03 EPA 8260D/5030BNDEthylbenzene
mg/kg dry J-LOW-L12/21/2412/21/240.02 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 12/21/2412/21/240.03 EPA 8260D/5030BNDNaphthalene
mg/kg dry 12/21/2412/21/240.03 EPA 8260D/5030BNDToluene
mg/kg dry 12/21/2412/21/240.08 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 12/21/2412/21/240.282 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 12/19/2412/18/2462EPA 8015 CNDDiesel Range Organics
Project Name: 7-Eleven 33981 (Centerville)CtF WO#: 24L1259
www.ChemtechFord.com
Page 20 of 32Page 20 of 34
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Stantec Consulting Inc.
Anna Skinner
2890 East Cottonwood Parkway, Suite 300
Salt Lake City, UT 84121
PO#:
Receipt:
Date Reported:
Project Name:
203724144.1401.0400
12/16/24 12:23 @ 2.9 °C
12/30/2024
7-Eleven 33981 (Centerville)
Sample ID: SS-20
Lab ID: 24L1259-20Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 12/16/24 9:50
Preparation
Date/Time
Sampled By: Steve Yorgason
Minimum
Reporting
Limit MethodResult
Inorganic
%12/17/2412/17/240.1 CTF800082.3Total Solids
MBTEXn
mg/kg dry 12/21/2412/21/240.009 EPA 8260D/5030BNDBenzene
mg/kg dry 12/21/2412/21/240.02 EPA 8260D/5030BNDEthylbenzene
mg/kg dry J-LOW-L12/21/2412/21/240.01 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 12/21/2412/21/240.02 EPA 8260D/5030BNDNaphthalene
mg/kg dry 12/21/2412/21/240.02 EPA 8260D/5030BNDToluene
mg/kg dry 12/21/2412/21/240.07 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 12/21/2412/21/240.234 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 12/19/2412/18/2461EPA 8015 CNDDiesel Range Organics
Project Name: 7-Eleven 33981 (Centerville)CtF WO#: 24L1259
www.ChemtechFord.com
Page 21 of 32Page 21 of 34
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Stantec Consulting Inc.
Anna Skinner
2890 East Cottonwood Parkway, Suite 300
Salt Lake City, UT 84121
PO#:
Receipt:
Date Reported:
Project Name:
203724144.1401.0400
12/16/24 12:23 @ 2.9 °C
12/30/2024
7-Eleven 33981 (Centerville)
Sample ID: SS-21
Lab ID: 24L1259-21Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 12/16/24 9:45
Preparation
Date/Time
Sampled By: Steve Yorgason
Minimum
Reporting
Limit MethodResult
Inorganic
%12/17/2412/17/240.1 CTF800093.9Total Solids
MBTEXn
mg/kg dry 12/21/2412/21/240.009 EPA 8260D/5030BNDBenzene
mg/kg dry 12/21/2412/21/240.02 EPA 8260D/5030BNDEthylbenzene
mg/kg dry J-LOW-L12/21/2412/21/240.01 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 12/21/2412/21/240.02 EPA 8260D/5030BNDNaphthalene
mg/kg dry 12/21/2412/21/240.02 EPA 8260D/5030BNDToluene
mg/kg dry 12/21/2412/21/240.07 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 12/21/2412/21/240.222 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 12/19/2412/18/2453EPA 8015 CNDDiesel Range Organics
Project Name: 7-Eleven 33981 (Centerville)CtF WO#: 24L1259
www.ChemtechFord.com
Page 22 of 32Page 22 of 34
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Stantec Consulting Inc.
Anna Skinner
2890 East Cottonwood Parkway, Suite 300
Salt Lake City, UT 84121
PO#:
Receipt:
Date Reported:
Project Name:
203724144.1401.0400
12/16/24 12:23 @ 2.9 °C
12/30/2024
7-Eleven 33981 (Centerville)
Sample ID: SS-22
Lab ID: 24L1259-22Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 12/16/24 9:40
Preparation
Date/Time
Sampled By: Steve Yorgason
Minimum
Reporting
Limit MethodResult
Inorganic
%12/17/2412/17/240.1 CTF800090.1Total Solids
MBTEXn
mg/kg dry 12/21/2412/21/240.009 EPA 8260D/5030BNDBenzene
mg/kg dry 12/21/2412/21/240.02 EPA 8260D/5030BNDEthylbenzene
mg/kg dry J-LOW-L12/21/2412/21/240.01 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 12/21/2412/21/240.02 EPA 8260D/5030BNDNaphthalene
mg/kg dry 12/21/2412/21/240.02 EPA 8260D/5030BNDToluene
mg/kg dry 12/21/2412/21/240.06 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 12/21/2412/21/240.214 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 12/19/2412/18/2456EPA 8015 C80Diesel Range Organics
Project Name: 7-Eleven 33981 (Centerville)CtF WO#: 24L1259
www.ChemtechFord.com
Page 23 of 32Page 23 of 34
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Stantec Consulting Inc.
Anna Skinner
2890 East Cottonwood Parkway, Suite 300
Salt Lake City, UT 84121
PO#:
Receipt:
Date Reported:
Project Name:
203724144.1401.0400
12/16/24 12:23 @ 2.9 °C
12/30/2024
7-Eleven 33981 (Centerville)
Sample ID: SS-23
Lab ID: 24L1259-23Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 12/16/24 10:10
Preparation
Date/Time
Sampled By: Steve Yorgason
Minimum
Reporting
Limit MethodResult
Inorganic
%12/17/2412/17/240.1 CTF800091.0Total Solids
MBTEXn
mg/kg dry 12/21/2412/21/240.01 EPA 8260D/5030BNDBenzene
mg/kg dry 12/21/2412/21/240.03 EPA 8260D/5030BNDEthylbenzene
mg/kg dry J-LOW-L12/21/2412/21/240.02 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 12/21/2412/21/240.03 EPA 8260D/5030BNDNaphthalene
mg/kg dry 12/21/2412/21/240.03 EPA 8260D/5030BNDToluene
mg/kg dry 12/21/2412/21/240.08 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 12/21/2412/21/240.275 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 12/19/2412/18/2455EPA 8015 CNDDiesel Range Organics
Project Name: 7-Eleven 33981 (Centerville)CtF WO#: 24L1259
www.ChemtechFord.com
Page 24 of 32Page 24 of 34
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Stantec Consulting Inc.
Anna Skinner
2890 East Cottonwood Parkway, Suite 300
Salt Lake City, UT 84121
PO#:
Receipt:
Date Reported:
Project Name:
203724144.1401.0400
12/16/24 12:23 @ 2.9 °C
12/30/2024
7-Eleven 33981 (Centerville)
Sample ID: USC-1
Lab ID: 24L1259-24Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 12/16/24 9:00
Preparation
Date/Time
Sampled By: Steve Yorgason
Minimum
Reporting
Limit MethodResult
Inorganic
-12/24/2412/24/24ASTM D2487-ModSPUnited Soil Classification [USC]
Project Name: 7-Eleven 33981 (Centerville)CtF WO#: 24L1259
www.ChemtechFord.com
Page 25 of 32Page 25 of 34
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Stantec Consulting Inc.
Anna Skinner
2890 East Cottonwood Parkway, Suite 300
Salt Lake City, UT 84121
PO#:
Receipt:
Date Reported:
Project Name:
203724144.1401.0400
12/16/24 12:23 @ 2.9 °C
12/30/2024
7-Eleven 33981 (Centerville)
Sample ID: USC-2
Lab ID: 24L1259-25Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 12/16/24 8:25
Preparation
Date/Time
Sampled By: Steve Yorgason
Minimum
Reporting
Limit MethodResult
Inorganic
-12/24/2412/24/24ASTM D2487-ModSPUnited Soil Classification [USC]
Project Name: 7-Eleven 33981 (Centerville)CtF WO#: 24L1259
www.ChemtechFord.com
Page 26 of 32Page 26 of 34
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Stantec Consulting Inc.
Anna Skinner
2890 East Cottonwood Parkway, Suite 300
Salt Lake City, UT 84121
PO#:
Receipt:
Date Reported:
Project Name:
203724144.1401.0400
12/16/24 12:23 @ 2.9 °C
12/30/2024
7-Eleven 33981 (Centerville)
Report Footnotes
Abbreviations
ND = Not detected at the corresponding Minimum Reporting Limit (MRL).
1 mg/L = one milligram per liter or 1 mg/kg = one milligram per kilogram = 1 part per million.
1 ug/L = one microgram per liter or 1 ug/kg = one microgram per kilogram = 1 part per billion.
1 ng/L = one nanogram per liter or 1 ng/kg = one nanogram per kilogram = 1 part per trillion.
On calculated parameters, there may be a slight difference between summing the rounded values shown on the report
vs the unrounded values used in the calculation.
Flag Descriptions
J-LOW-L = Estimated low due to low recovery of LCS
Project Name: 7-Eleven 33981 (Centerville)CtF WO#: 24L1259
www.ChemtechFord.com
Page 27 of 32Page 27 of 34
Page 28 of 34
Page 29 of 34
Page 30 of 34
QC Report for Work Order (WO) - 24L1259
% Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte
Blank - EPA 8015 C
QC Sample ID: BYL0856-BLK1 Batch: BYL0856
Date Prepared: 12/18/2024 Date Analyzed: 12/18/2024
Diesel Range Organics ND 50 1.00
QC Sample ID: BYL0857-BLK1 Batch: BYL0857
Date Prepared: 12/18/2024 Date Analyzed: 12/19/2024
Diesel Range Organics ND 50 1.00
LCS - EPA 8015 C
QC Sample ID: BYL0856-BS1 Batch: BYL0856
Date Prepared: 12/18/2024 Date Analyzed: 12/18/2024
Diesel Range Organics 102 50 - 150 2040 2000 50 1.00
QC Sample ID: BYL0857-BS1 Batch: BYL0857
Date Prepared: 12/18/2024 Date Analyzed: 12/19/2024
Diesel Range Organics 107 50 - 150 2140 2000 50 1.00
Matrix Spike - EPA 8015 C
QC Sample ID: BYL0856-MS1 QC Source Sample: XXXXXXX-XXBatch: BYL0856
Date Prepared: 12/18/2024 Date Analyzed: 12/18/2024
Diesel Range Organics 101 50 - 150 2240 ND 2230 56 1.00
QC Sample ID: BYL0857-MS1 QC Source Sample: 24L1259-04Batch: BYL0857
Date Prepared: 12/18/2024 Date Analyzed: 12/19/2024
Diesel Range Organics 104 50 - 150 2170 ND 2090 50 1.00
Matrix Spike Dup - EPA 8015 C
QC Sample ID: BYL0856-MSD1 QC Source Sample: XXXXXXX-XXBatch: BYL0856
Date Prepared: 12/18/2024 Date Analyzed: 12/18/2024
Diesel Range Organics 99.4 1.25 50 - 150 20 2220 ND 2230 56 1.00
QC Sample ID: BYL0857-MSD1 QC Source Sample: 24L1259-04Batch: BYL0857
Date Prepared: 12/18/2024 Date Analyzed: 12/19/2024
Diesel Range Organics 103 0.840 50 - 150 20 2150 ND 2090 50 1.00
CtF WO#: 24L1259
www.ChemtechFord.com Page 31 of 34
QC Report for Work Order (WO) - 24L1259
% Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte
Blank - EPA 8260D
QC Sample ID: BYL0914-BLK1 Batch: BYL0914
Date Prepared: 12/19/2024 Date Analyzed: 12/19/2024
Benzene ND 0.0004 1.00
Ethylbenzene ND 0.001 1.00
Methyl-tert-butyl ether (MTBE)ND 0.0006 1.00
Naphthalene ND 0.001 1.00
Toluene ND 0.001 1.00
Xylenes, total ND 0.003 1.00
QC Sample ID: BYL1025-BLK1 Batch: BYL1025
Date Prepared: 12/21/2024 Date Analyzed: 12/21/2024
Benzene ND 0.0004 1.00
Ethylbenzene ND 0.001 1.00
Methyl-tert-butyl ether (MTBE)ND 0.0006 1.00
Naphthalene ND 0.001 1.00
Toluene ND 0.001 1.00
Xylenes, total ND 0.003 1.00
QC Sample ID: BYL1093-BLK1 Batch: BYL1093
Date Prepared: 12/24/2024 Date Analyzed: 12/24/2024
Benzene ND 0.0004 1.00
Ethylbenzene ND 0.001 1.00
Methyl-tert-butyl ether (MTBE)ND 0.0006 1.00
Naphthalene ND 0.001 1.00
Toluene ND 0.001 1.00
Xylenes, total ND 0.003 1.00
LCS - EPA 8260D
QC Sample ID: BYL0914-BS1 Batch: BYL0914
Date Prepared: 12/19/2024 Date Analyzed: 12/19/2024
Benzene 111 70 - 130 0.01 0.0100 0.0004 1.00
Ethylbenzene 113 70 - 130 0.01 0.0100 0.001 1.00
Methyl-tert-butyl ether (MTBE)93.6 70 - 130 0.009 0.0100 0.0006 1.00
Naphthalene 108 70 - 130 0.01 0.0100 0.001 1.00
Toluene 107 70 - 130 0.01 0.0100 0.001 1.00
Xylenes, total 116 70 - 130 0.03 0.0300 0.003 1.00
QC Sample ID: BYL1025-BS1 Batch: BYL1025
Date Prepared: 12/21/2024 Date Analyzed: 12/21/2024
Benzene 98.5 70 - 130 0.01 0.0100 0.0004 1.00
Ethylbenzene 104 70 - 130 0.01 0.0100 0.001 1.00
Methyl-tert-butyl ether (MTBE)69.1 70 - 130 0.007 0.0100 0.0006 1.00
J-LOW-L - Estimated low due to low recovery of LCS
Naphthalene 102 70 - 130 0.01 0.0100 0.001 1.00
Toluene 97.6 70 - 130 0.01 0.0100 0.001 1.00
Xylenes, total 107 70 - 130 0.03 0.0300 0.003 1.00
QC Sample ID: BYL1093-BS1 Batch: BYL1093
Date Prepared: 12/24/2024 Date Analyzed: 12/24/2024
Benzene 91.2 70 - 130 0.009 0.0100 0.0004 1.00
Ethylbenzene 103 70 - 130 0.01 0.0100 0.001 1.00
Methyl-tert-butyl ether (MTBE)138 70 - 130 0.01 0.0100 0.0006 1.00
HB - Recovery for this parameter exceeded the upper acceptance limit. Associated sample(s) were all non-detect and therefore
accepted and reported for this parameter.
E - The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is
considered an estimate (CLP E-flag).
CtF WO#: 24L1259
www.ChemtechFord.com Page 32 of 34
QC Report for Work Order (WO) - 24L1259
% Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte
LCS - EPA 8260D (cont.)
QC Sample ID: BYL1093-BS1 Batch: BYL1093
Date Prepared: 12/24/2024 Date Analyzed: 12/24/2024
A-01 - Estimated and bias high due to peak shape, reported as average response
Naphthalene 98.8 70 - 130 0.01 0.0100 0.001 1.00
Toluene 92.3 70 - 130 0.009 0.0100 0.001 1.00
Xylenes, total 103 70 - 130 0.03 0.0300 0.003 1.00
Matrix Spike - EPA 8260D
QC Sample ID: BYL0914-MS1 QC Source Sample: XXXXXXX-XXBatch: BYL0914
Date Prepared: 12/19/2024 Date Analyzed: 12/19/2024
Benzene 91.5 70 - 130 229 ND 250 10.0 1.00
Ethylbenzene 94.5 50 - 150 236 ND 250 25.0 1.00
Methyl-tert-butyl ether (MTBE)83.8 50 - 150 210 ND 250 15.0 1.00
Naphthalene 102 50 - 150 255 ND 250 25.0 1.00
Toluene 89.0 70 - 130 222 ND 250 25.0 1.00
Xylenes, total 100 70 - 130 752 ND 750 75.0 1.00
QC Sample ID: BYL1025-MS1 QC Source Sample: XXXXXXX-XXBatch: BYL1025
Date Prepared: 12/21/2024 Date Analyzed: 12/21/2024
Benzene 90.1 70 - 130 0.31 0.02 0.315 0.01 1.00
Ethylbenzene 91.7 50 - 150 0.29 ND 0.315 0.03 1.00
Methyl-tert-butyl ether (MTBE)77.3 50 - 150 0.24 ND 0.315 0.02 1.00
Naphthalene 108 50 - 150 0.34 ND 0.315 0.03 1.00
Toluene 88.3 70 - 130 0.28 ND 0.315 0.03 1.00
Xylenes, total 97.1 70 - 130 0.92 ND 0.945 0.09 1.00
QC Sample ID: BYL1093-MS1 QC Source Sample: XXXXXXX-XXBatch: BYL1093
Date Prepared: 12/24/2024 Date Analyzed: 12/24/2024
Benzene 96.6 70 - 130 0.79 0.51 0.291 0.01 1.00
Ethylbenzene 92.1 50 - 150 0.28 0.01 0.291 0.03 1.00
Methyl-tert-butyl ether (MTBE)132 50 - 150 0.38 ND 0.291 0.02 1.00
A-01 - Estimated and bias high due to peak shape, reported as average response
E - The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is
considered an estimate (CLP E-flag).
HB - Recovery for this parameter exceeded the upper acceptance limit. Associated sample(s) were all non-detect and therefore
accepted and reported for this parameter.
Naphthalene 97.6 50 - 150 0.28 ND 0.291 0.03 1.00
Toluene 85.8 70 - 130 0.28 0.03 0.291 0.03 1.00
Xylenes, total 95.8 70 - 130 1.12 0.28 0.874 0.09 1.00
Matrix Spike Dup - EPA 8260D
QC Sample ID: BYL0914-MSD1 QC Source Sample: XXXXXXX-XXBatch: BYL0914
Date Prepared: 12/19/2024 Date Analyzed: 12/19/2024
Benzene 85.8 6.43 70 - 130 20 214 ND 250 10.0 1.00
Ethylbenzene 90.7 4.10 50 - 150 25 227 ND 250 25.0 1.00
Methyl-tert-butyl ether (MTBE)78.1 7.04 50 - 150 25 195 ND 250 15.0 1.00
Naphthalene 103 0.975 50 - 150 25 258 ND 250 25.0 1.00
Toluene 86.5 2.85 70 - 130 20 216 ND 250 25.0 1.00
Xylenes, total 96.6 3.79 70 - 130 20 724 ND 750 75.0 1.00
QC Sample ID: BYL1025-MSD1 QC Source Sample: XXXXXXX-XXBatch: BYL1025
Date Prepared: 12/21/2024 Date Analyzed: 12/21/2024
Benzene 91.5 1.43 70 - 130 20 0.31 0.02 0.315 0.01 1.00
Ethylbenzene 93.3 1.73 50 - 150 25 0.29 ND 0.315 0.03 1.00
Methyl-tert-butyl ether (MTBE)72.5 6.41 50 - 150 25 0.23 ND 0.315 0.02 1.00
CtF WO#: 24L1259
www.ChemtechFord.com Page 33 of 34
QC Report for Work Order (WO) - 24L1259
% Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte
Matrix Spike Dup - EPA 8260D (cont.)
QC Sample ID: BYL1025-MSD1 QC Source Sample: XXXXXXX-XXBatch: BYL1025
Date Prepared: 12/21/2024 Date Analyzed: 12/21/2024
Naphthalene 102 5.41 50 - 150 25 0.32 ND 0.315 0.03 1.00
Toluene 89.6 1.46 70 - 130 20 0.28 ND 0.315 0.03 1.00
Xylenes, total 98.4 1.40 70 - 130 20 0.93 ND 0.945 0.09 1.00
QC Sample ID: BYL1093-MSD1 QC Source Sample: XXXXXXX-XXBatch: BYL1093
Date Prepared: 12/24/2024 Date Analyzed: 12/24/2024
Benzene 84.4 4.28 70 - 130 20 0.76 0.51 0.294 0.01 1.00
Ethylbenzene 88.4 3.04 50 - 150 25 0.27 0.01 0.294 0.03 1.00
Methyl-tert-butyl ether (MTBE)137 5.27 50 - 150 25 0.40 ND 0.294 0.02 1.00
A-01 - Estimated and bias high due to peak shape, reported as average response
E - The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is
considered an estimate (CLP E-flag).
HB - Recovery for this parameter exceeded the upper acceptance limit. Associated sample(s) were all non-detect and therefore
accepted and reported for this parameter.
Naphthalene 96.6 0.0729 50 - 150 25 0.28 ND 0.294 0.03 1.00
Toluene 82.0 3.13 70 - 130 20 0.27 0.03 0.294 0.03 1.00
Xylenes, total 90.3 3.63 70 - 130 20 1.08 0.28 0.883 0.09 1.00
CtF WO#: 24L1259
www.ChemtechFord.com Page 34 of 34