DERR-2024-005975

Rockwell Solutions, Inc., 718 E. Bridger Lane, Elk Ridge, UT 84651, 801-361-2930, [e-mail]
Rockwell Solutions, Inc.
718 E Bridger Lane
Elk Ridge, UT 84651
[phone]
April 12, 2024

Mrs. Andrea Johnson
Jenkins Oil Co.
PO Box 1356
Cedar City, UT 84721

Re: Excavation Report (CAP Implementation Report)
Rally Stop #13, 750 South Bluff Street, St. George, Utah
Facility ID: 6000208 Release ID: OHU

Dear Mrs. Johnson:

Rockwell Solutions, Inc. oversaw excavation activities in August 2023 for the above-referenced
facility and release in accordance with a Corrective Action Plan (CAP) approved by the State of
Utah Division of Environmental Response and Remediation (DERR) on July 19, 2023.

INTRODUCTION

Rally Stop #13 is an active gas station with a convenience store located at 750 S Bluff Street in St.
George, Utah. Release KAJ was reported at a dispenser on the east side of the site on April 28,
1997.

During tank removal activities in May 2023 soil and groundwater contamination were discovered in
the tank basin and from two dispensers on the west side of the site. A new release was reported on
May 17, 2023, and was assigned release code OHU.

A CAP was prepared to excavate onsite contaminated soil and to remove impacted groundwater.

EXCAVATION ACTIVITIES

Concrete and asphalt were removed from the site after the tank removal. A new tank basin was
excavated on the west side of the property. Apparent impacted soil was placed in the former tank
basin excavation. Soil samples were collected from the corners and east and west walls of the new
excavation. Soil sample locations are shown on Figure 1.

Contaminated soil removal began on July 31, 2023, near the southwest dispenser. It was believed
some clean material would be present at the top of the excavation, but contaminated material was
found just below the surface upon digging. All soil was hauled offsite.

Excavation Report, Rally Stop #13, St. George, Utah
2
Rockwell Solutions, Inc., 718 E. Bridger Lane, Elk Ridge, UT 84651, 801-361-2930, [e-mail]

All accessible soil was excavated on the south side of the property to the approximate St George
Auto property line, as shown on Figure 1. The eastern edge of the property remained open to
accommodate dump truck traffic. Approximately 6,033 tons of soil were removed from the site.

The vertical extent of contamination extended to approximately thirteen feet below grade (bg) in the
northwest part of the excavation and eighteen feet bg across most of the excavation. Soil
confirmation samples were collected from the walls, corners, and bottom of the excavation. The
samples were analyzed for MTBE, benzene, toluene, ethylbenzene, xylenes, naphthalene
(MBTEXN) and total petroleum hydrocarbons – gasoline range organics (TPH-GRO) using EPA
analytical method 8260b and TPH-diesel range organics (TPH-DRO) using EPA method 8015b.
Sample locations are shown on Figure 1 and corresponding depths are shown on Table 1.

SOIL TYPE
The top two to four feet of native soil at the site consisted of silt which then graded into a siltstone
bedrock. The upper feet of the siltstone was friable and graded into more solid rock, which was
fractured throughout the site.

SOIL DISPOSAL
All soil removed from the excavation was hauled to the Bryce Christensen Excavating (BCX)
gravel yard in St. George. The soil was spread out and landfarmed, then approximately half of the
soil was run through a rock crusher and spread out again. Samples were collected from the crushed
soil on January 3, 2024, and found to be below Initial Screening Levels. A Landfarm Sampling
Report was prepared and submitted to DERR on January 11, 2024.

The second half of the landfarmed soil has been crushed and is awaiting confirmation sampling.

The excavation was backfilled and compacted with clean, imported backfill and the excavation area
was repaved.

GROUNDWATER
A frac tank was onsite in preparation for dewatering of the excavation. However, no groundwater
was observed or present in the excavation at any time. Depth to groundwater has consistently been
measured at approximately ten feet in the onsite monitoring well network. However, groundwater
flow/recharge through the bedrock is very slow.

ANALYTICAL RESULTS
The soil analytical results from the excavation are presented on Table 1. In general, samples
adjacent to the convenience store building, east of the building, and along the south property
boundary exceed Tier 1 and/or Initial Screening Levels. Laboratory reports are attached.

CONCLUSIONS AND RECOMMENDATIONS
Approximately 6,033 cubic yards of soil were removed from the site in August 2023. All soil was
hauled to the BCX gravel yard facility where it was crushed and landfarmed. No groundwater was
observed. It appears that additional soil contamination remains below the convenience store
building, east of the convenience store building, and on the offsite property to the south.

Excavation Report, Rally Stop #13, St. George, Utah
3
Rockwell Solutions, Inc., 718 E. Bridger Lane, Elk Ridge, UT 84651, 801-361-2930, [e-mail]

Rockwell Solutions recommends additional investigation to delineate the extent of soil
contamination in preparation for future corrective action, replacing monitoring wells to evaluate
groundwater contamination, and collecting sub-slab vapor samples to evaluate potential vapor
intrusion into the convenience store building.

Thank you for the opportunity to work with you on this project. If you have any questions or
concerns, please feel free to contact me at your convenience.

Sincerely,

David Hansen
Rockwell Solutions, Inc.
Certified UST Consultant CC130
cc: Hong Lei Tao, DERR

Ap r x. scale n feepoi t
00 40
eFigur 1
l 1Raly#3
50 South lu t7 B ff S .
t eo e, hS.G rg Uta
r p s d Ex a a ion A ePooe c v t r a
MW-16
NORTH
--2 6 2 5
MW-12
MW-12
MW-12
MW-26
Figure 1 Excavation Map
NORTH
Approx. scale in feet
00 25
Rally Stop #13
750 S Bluff Street
St George, Utah
Sampling Location
New TB, W New TB, E
New TB, SW
New TB, SE
New TB, NW New TB, NE
SW
SE
S-2
S-1
Bldg,SW
Bldg,SE
Bldg,Mid
E, NE
NE
NW
B-1 B-2
B-3
B-4
B-5
B-6
B-7
B-8
B-9
E
Sample
Depth
(feet) Date
Benzene
(mg/kg)
Toluene
(mg/kg)
Ethyl-
benzene
(mg/kg)
Xylenes
(mg/kg)
Naph-
thalene
(mg/kg)
MTBE
(mg/kg)
TPH-GRO
(mg/kg)
TPH-DRO
(mg/kg)
0.2 9 5 142 51 0.3 150 500
0.9 25 23 142 51 0.3 1,500 5,000
NW, 11' 11 5/18/2023 <0.12 <0.30 <0.30 <0.30 <0.30 <0.12 <2.96 10,500
N, 10' 10 5/18/2023 0.26 0.37 3.26 1.5 4.41 <0.12 164 1,740
NE, 11' 11 5/18/2023 1.41 <0.32 24.4 0.8 10.5 <0.13 748 2,900
SE, 11' 11 5/18/2023 3.62 0.59 36 6.3 15.2 <0.12 1870 5,300
S, 10' 10 5/18/2023 2.8 0.3 16 2.17 7.26 <0.12 769 3,530
SW, 11' 11 5/18/2023 0.4 <0.3 37.9 10.1 18.8 <0.12 1580 20,400
P-1,4' 4 5/18/2023 <0.13 <0.32 <0.32 <0.32 1.41 <0.13 103 1,290
DD-1, 3' 3 5/18/2023 0.6 10.5 12.2 83 7.44 <0.12 884 53,100
DD-2, 3' 3 5/18/2023 <0.12 <0.29 <0.29 0.57 <0.29 <0.12 81 2,610
DD-3, 3' 3 5/18/2023 <0.12 <0.29 <0.29 <0.29 0.5 <0.12 48.7 880
DD-4, 3' 3 5/18/2023 <0.12 <0.30 <0.30 <0.30 1.04 <0.12 62.1 2,370
DD-5, 3' 3 5/18/2023 <0.12 <0.29 <0.29 <0.29 <0.29 <0.12 <2.9 455
New TB, SE, 10' 10 6/2/2023 <0.008 <0.02 <0.02 <0.02 <0.02 <0.008 <0.212 755
New TB, SE, 13' 13 6/2/2023 <0.01 <0.03 <0.03 <0.03 <0.03 <0.01 <0.287 116
New TB, E, 10' 10 6/2/2023 <0.007 <0.02 <0.02 <0.02 <0.02 <0.007 <0.177 <54
New TB, NE, 10' 10 6/2/2023 <0.01 <0.03 <0.03 <0.03 <0.03 0.1 <0.293 <62
New TB, NW, 10' 10 6/2/2023 <0.12 <0.30 <0.30 <0.30 <0.30 <0.12 5.91 352
New TB, W, 10' 10 6/2/2023 <0.01 <0.03 <0.03 <0.03 <0.03 <0.01 <0.282 <58
New TB, SW, 10' 10 6/2/2023 <0.11 <0.28 <0.28 <0.28 <0.28 <0.11 <2.81 224
New TB, SW, 13' 13 6/2/2023 <0.12 <0.30 <0.30 <0.30 <0.30 <0.12 20 1,560
Samples from new tank basin excavation
Table 1
Soil Sample Results
Rally Stop 13
750 S Bluff Street, St George, Utah
Initial Screening Levels
RBCA Tier 1 Screening Levels
UST Closure Samples
Page 1 of 3
Sample
Depth
(feet) Date
Benzene
(mg/kg)
Toluene
(mg/kg)
Ethyl-
benzene
(mg/kg)
Xylenes
(mg/kg)
Naph-
thalene
(mg/kg)
MTBE
(mg/kg)
TPH-GRO
(mg/kg)
TPH-DRO
(mg/kg)
0.2 9 5 142 51 0.3 150 500
0.9 25 23 142 51 0.3 1,500 5,000
Table 1
Soil Sample Results
Rally Stop 13
750 S Bluff Street, St George, Utah
Initial Screening Levels
RBCA Tier 1 Screening Levels
UST Closure Samples
NE, 10' 10 8/1/2023 <0.12 <0.31 <0.31 <0.31 <0.31 0.15 <3.05 <61
NW, 10' 10 8/1/2023 <0.01 <0.03 <0.03 <0.03 <0.03 <0.01 <0.287 <57
NW, 13' 13 8/1/2023 0.03 <0.03 <0.03 <0.03 <0.03 0.61 0.414 <55
E-1, 10' 10 8/2/2023 <0.12 <0.30 0.56 <0.30 2.17 <0.12 81 8,820
B-1, 13' 13 8/2/2023 <0.01 <0.03 <0.03 <0.03 <0.03 1.55 0.971 <62
B-2, 13' 13 8/2/2023 <0.01 <0.02 <0.02 <0.02 <0.02 0.11 <0.248 <58
B-3, 18' 18 8/4/2023 <0.11 <0.28 <0.28 <0.28 <0.28 <0.11 <2.77 297
B-4, 18' 18 8/4/2023 <0.11 <0.27 <0.27 <0.27 <0.27 <0.11 <2.72 229
SW, 10' 10 8/8/2023 <0.11 <0.29 0.33 3.92 3.00 <0.11 165 326
SW, 18' 18 8/8/2023 <0.11 <0.26 <0.26 <0.26 <0.26 <0.11 <2.64 487
S-1, 9' 9 8/11/2023 <0.12 <0.31 <0.31 <0.31 0.70 <0.12 32.8 3,270
S-1, 11' 11 8/11/2013 <0.13 <0.32 <0.32 0.48 1.54 <0.13 28 347
S-1, 15' 15 8/11/2013 <0.009 <0.02 <0.02 <0.02 <0.02 <0.009 <0.227 <57
S-2, 10' 10 8/11/2013 1.29 <0.30 25.5 7.61 27.7 <0.12 501 2,390
SE, 10' 10 8/11/2023 <0.01 <0.03 <0.03 <0.03 <0.03 <0.01 <0.301 <62
E, NE, 10' 10 8/11/2023 <0.11 <0.29 18.5 1.04 16.8 <0.11 321 3,010
Bldg, SW, 18' 18 8/9/2023 <0.009 <0.02 <0.02 <0.02 <0.02 <0.009 <0.223 73
Bldg, SW, 10' 10 8/9/2023 <0.12 <0.30 2.1 <0.30 2.75 <0.12 83.3 5,040
Bldg, Mid, 10' 10 8/10/2023 0.75 <0.30 11.6 1.18 6.2 <0.12 171 1,740
Bldg, SE, 10' 10 8/11/2023 <0.12 <0.29 3.57 1.26 4.74 <0.12 80.4 239
B-5, 18' 18 8/8/2023 <0.01 <0.03 <0.03 <0.03 <0.03 <0.01 <0.263 <54
B-6, 18' 18 8/8/2023 <0.01 <0.02 <0.02 <0.02 <0.02 <0.01 <0.242 <60
B-7, 18' 18 8/9/2023 <0.009 <0.02 <0.02 <0.02 <0.02 <0.009 <0.234 <54
Samples from excavation
Page 2 of 3
Sample
Depth
(feet) Date
Benzene
(mg/kg)
Toluene
(mg/kg)
Ethyl-
benzene
(mg/kg)
Xylenes
(mg/kg)
Naph-
thalene
(mg/kg)
MTBE
(mg/kg)
TPH-GRO
(mg/kg)
TPH-DRO
(mg/kg)
0.2 9 5 142 51 0.3 150 500
0.9 25 23 142 51 0.3 1,500 5,000
Table 1
Soil Sample Results
Rally Stop 13
750 S Bluff Street, St George, Utah
Initial Screening Levels
RBCA Tier 1 Screening Levels
UST Closure SamplesB-8, 18' 18 8/10/2023 <0.11 <0.27 <0.27 <0.27 0.33 <0.11 4.23 177
B-9, 18' 18 8/11/2023 <0.11 <0.26 <0.26 <0.26 0.44 <0.11 <2.64 284
MBTEXN and TPH-GRO analyzed by EPA Method 8260
TPH-DRO analyzed by EPA Method 8015
Pink shading = exceeds ISL
Yellow shading = exceeds Tier 1 level
Green shading = area that was later excavated
Page 3 of 3
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
Rockwell Solutions, Inc
Attn: Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
Work Order: 23H0594
Project: Rally Stop 13
8/11/2023
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 11
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
8/7/23 16:49 @ 5.0 °C
8/11/2023
Rally Stop 13
Sample ID: NE, 10'
Lab ID: 23H0594-01Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 8/1/23 7:00
Preparation
Date/Time
Sampled By: Dave Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%8/8/238/8/230.1 CTF800081.9Total Solids
MBTEXn
mg/kg dry 8/8/238/8/230.12 EPA 8260D /5030ANDBenzene
mg/kg dry 8/8/238/8/230.31 EPA 8260D /5030ANDEthylbenzene
mg/kg dry 8/8/238/8/230.12 EPA 8260D /5030A0.15Methyl tert-Butyl Ether (MTBE)
mg/kg dry 8/8/238/8/230.31 EPA 8260D /5030ANDNaphthalene
mg/kg dry 8/8/238/8/230.31 EPA 8260D /5030ANDToluene
mg/kg dry 8/8/238/8/230.31 EPA 8260D /5030ANDXylenes, total
Gasoline Range
mg/kg dry 8/8/238/8/233.05 EPA 8260B/C 5035ANDGasoline Range Organics
Diesel Range
mg/kg dry 8/8/238/8/2361EPA 8015C/3550BNDDiesel Range Organics
Project Name: Rally Stop 13 CtF WO#: 23H0594
www.ChemtechFord.com
Page 2 of 11Page 2 of 11
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
8/7/23 16:49 @ 5.0 °C
8/11/2023
Rally Stop 13
Sample ID: NW, 10'
Lab ID: 23H0594-02Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 8/1/23 7:15
Preparation
Date/Time
Sampled By: Dave Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%8/8/238/8/230.1 CTF800087.2Total Solids
MBTEXn
mg/kg dry 8/8/238/8/230.01 EPA 8260D /5030ANDBenzene
mg/kg dry 8/8/238/8/230.03 EPA 8260D /5030ANDEthylbenzene
mg/kg dry 8/8/238/8/230.01 EPA 8260D /5030ANDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 8/8/238/8/230.03 EPA 8260D /5030ANDNaphthalene
mg/kg dry 8/8/238/8/230.03 EPA 8260D /5030ANDToluene
mg/kg dry 8/8/238/8/230.03 EPA 8260D /5030ANDXylenes, total
Gasoline Range
mg/kg dry 8/8/238/8/230.287 EPA 8260B/C 5035ANDGasoline Range Organics
Diesel Range
mg/kg dry 8/8/238/8/2357EPA 8015C/3550BNDDiesel Range Organics
Project Name: Rally Stop 13 CtF WO#: 23H0594
www.ChemtechFord.com
Page 3 of 11Page 3 of 11
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
8/7/23 16:49 @ 5.0 °C
8/11/2023
Rally Stop 13
Sample ID: NW, 13'
Lab ID: 23H0594-03Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 8/1/23 14:00
Preparation
Date/Time
Sampled By: Dave Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%8/8/238/8/230.1 CTF800090.9Total Solids
MBTEXn
mg/kg dry 8/8/238/8/230.01 EPA 8260D /5030A0.03Benzene
mg/kg dry 8/8/238/8/230.03 EPA 8260D /5030ANDEthylbenzene
mg/kg dry 8/8/238/8/230.01 EPA 8260D /5030A0.61Methyl tert-Butyl Ether (MTBE)
mg/kg dry 8/8/238/8/230.03 EPA 8260D /5030ANDNaphthalene
mg/kg dry 8/8/238/8/230.03 EPA 8260D /5030ANDToluene
mg/kg dry 8/8/238/8/230.03 EPA 8260D /5030ANDXylenes, total
Gasoline Range
mg/kg dry 8/8/238/8/230.275 EPA 8260B/C 5035A0.414Gasoline Range Organics
Diesel Range
mg/kg dry 8/8/238/8/2355EPA 8015C/3550BNDDiesel Range Organics
Project Name: Rally Stop 13 CtF WO#: 23H0594
www.ChemtechFord.com
Page 4 of 11Page 4 of 11
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
8/7/23 16:49 @ 5.0 °C
8/11/2023
Rally Stop 13
Sample ID: E-1, 10'
Lab ID: 23H0594-04Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 8/2/23 7:05
Preparation
Date/Time
Sampled By: Dave Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%8/8/238/8/230.1 CTF800084.1Total Solids
MBTEXn
mg/kg dry 8/8/238/8/230.12 EPA 8260D /5030ANDBenzene
mg/kg dry 8/8/238/8/230.30 EPA 8260D /5030A0.56Ethylbenzene
mg/kg dry 8/8/238/8/230.12 EPA 8260D /5030ANDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 8/8/238/8/230.30 EPA 8260D /5030A2.17Naphthalene
mg/kg dry 8/8/238/8/230.30 EPA 8260D /5030ANDToluene
mg/kg dry 8/8/238/8/230.30 EPA 8260D /5030ANDXylenes, total
Gasoline Range
mg/kg dry 8/8/238/8/232.97 EPA 8260B/C 5035A80.6Gasoline Range Organics
Diesel Range
mg/kg dry 8/8/238/8/2359EPA 8015C/3550B8820Diesel Range Organics
Project Name: Rally Stop 13 CtF WO#: 23H0594
www.ChemtechFord.com
Page 5 of 11Page 5 of 11
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
8/7/23 16:49 @ 5.0 °C
8/11/2023
Rally Stop 13
Sample ID: B-1, 13'
Lab ID: 23H0594-05Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 8/2/23 10:00
Preparation
Date/Time
Sampled By: Dave Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%8/8/238/8/230.1 CTF800081.3Total Solids
MBTEXn
mg/kg dry 8/8/238/8/230.01 EPA 8260D /5030ANDBenzene
mg/kg dry 8/8/238/8/230.03 EPA 8260D /5030ANDEthylbenzene
mg/kg dry 8/8/238/8/230.01 EPA 8260D /5030A1.55Methyl tert-Butyl Ether (MTBE)
mg/kg dry 8/8/238/8/230.03 EPA 8260D /5030ANDNaphthalene
mg/kg dry 8/8/238/8/230.03 EPA 8260D /5030ANDToluene
mg/kg dry 8/8/238/8/230.03 EPA 8260D /5030ANDXylenes, total
Gasoline Range
mg/kg dry 8/8/238/8/230.267 EPA 8260B/C 5035A0.971Gasoline Range Organics
Diesel Range
mg/kg dry 8/8/238/8/2362EPA 8015C/3550BNDDiesel Range Organics
Project Name: Rally Stop 13 CtF WO#: 23H0594
www.ChemtechFord.com
Page 6 of 11Page 6 of 11
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
8/7/23 16:49 @ 5.0 °C
8/11/2023
Rally Stop 13
Sample ID: B-2, 13'
Lab ID: 23H0594-06Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 8/2/23 14:00
Preparation
Date/Time
Sampled By: Dave Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%8/8/238/8/230.1 CTF800086.2Total Solids
MBTEXn
mg/kg dry 8/8/238/8/230.01 EPA 8260D /5030ANDBenzene
mg/kg dry 8/8/238/8/230.02 EPA 8260D /5030ANDEthylbenzene
mg/kg dry 8/8/238/8/230.01 EPA 8260D /5030A0.11Methyl tert-Butyl Ether (MTBE)
mg/kg dry 8/8/238/8/230.02 EPA 8260D /5030ANDNaphthalene
mg/kg dry 8/8/238/8/230.02 EPA 8260D /5030ANDToluene
mg/kg dry 8/8/238/8/230.02 EPA 8260D /5030ANDXylenes, total
Gasoline Range
mg/kg dry 8/8/238/8/230.248 EPA 8260B/C 5035ANDGasoline Range Organics
Diesel Range
mg/kg dry 8/8/238/8/2358EPA 8015C/3550BNDDiesel Range Organics
Project Name: Rally Stop 13 CtF WO#: 23H0594
www.ChemtechFord.com
Page 7 of 11Page 7 of 11
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
8/7/23 16:49 @ 5.0 °C
8/11/2023
Rally Stop 13
Sample ID: B-3, 18'
Lab ID: 23H0594-07Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 8/4/23 13:50
Preparation
Date/Time
Sampled By: Dave Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%8/8/238/8/230.1 CTF800090.2Total Solids
MBTEXn
mg/kg dry 8/8/238/8/230.11 EPA 8260D /5030ANDBenzene
mg/kg dry 8/8/238/8/230.28 EPA 8260D /5030ANDEthylbenzene
mg/kg dry 8/8/238/8/230.11 EPA 8260D /5030ANDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 8/8/238/8/230.28 EPA 8260D /5030ANDNaphthalene
mg/kg dry 8/8/238/8/230.28 EPA 8260D /5030ANDToluene
mg/kg dry 8/8/238/8/230.28 EPA 8260D /5030ANDXylenes, total
Gasoline Range
mg/kg dry 8/8/238/8/232.77 EPA 8260B/C 5035ANDGasoline Range Organics
Diesel Range
mg/kg dry 8/8/238/8/2355EPA 8015C/3550B297Diesel Range Organics
Project Name: Rally Stop 13 CtF WO#: 23H0594
www.ChemtechFord.com
Page 8 of 11Page 8 of 11
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
8/7/23 16:49 @ 5.0 °C
8/11/2023
Rally Stop 13
Sample ID: B-4, 18'
Lab ID: 23H0594-08Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 8/4/23 14:00
Preparation
Date/Time
Sampled By: Dave Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%8/8/238/8/230.1 CTF800092.0Total Solids
MBTEXn
mg/kg dry 8/8/238/8/230.11 EPA 8260D /5030ANDBenzene
mg/kg dry 8/8/238/8/230.27 EPA 8260D /5030ANDEthylbenzene
mg/kg dry 8/8/238/8/230.11 EPA 8260D /5030ANDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 8/8/238/8/230.27 EPA 8260D /5030ANDNaphthalene
mg/kg dry 8/8/238/8/230.27 EPA 8260D /5030ANDToluene
mg/kg dry 8/8/238/8/230.27 EPA 8260D /5030ANDXylenes, total
Gasoline Range
mg/kg dry 8/8/238/8/232.72 EPA 8260B/C 5035ANDGasoline Range Organics
Diesel Range
mg/kg dry 8/8/238/8/2354EPA 8015C/3550B229Diesel Range Organics
Project Name: Rally Stop 13 CtF WO#: 23H0594
www.ChemtechFord.com
Page 9 of 11Page 9 of 11
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
8/7/23 16:49 @ 5.0 °C
8/11/2023
Rally Stop 13
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.
Project Name: Rally Stop 13 CtF WO#: 23H0594
www.ChemtechFord.com
Page 10 of 11Page 10 of 11
Page 11 of 11
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
Rockwell Solutions, Inc
Attn: Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
Work Order: 23H1203
Project: Rally Stop #13
8/21/2023
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 21
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
8/14/23 13:44 @ 10.0 °C
8/21/2023
Rally Stop #13
Sample ID: SW, 10'
Lab ID: 23H1203-01Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 8/8/23 14:00
Preparation
Date/Time
Sampled By: Dave Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%8/16/238/15/230.1 CTF800087.1Total Solids
MBTEXn
mg/kg dry 8/16/238/16/230.11 EPA 8260D /5030ANDBenzene
mg/kg dry 8/16/238/16/230.29 EPA 8260D /5030A0.33Ethylbenzene
mg/kg dry 8/16/238/16/230.11 EPA 8260D /5030ANDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 8/16/238/16/230.29 EPA 8260D /5030A3.00Naphthalene
mg/kg dry 8/16/238/16/230.29 EPA 8260D /5030ANDToluene
mg/kg dry 8/16/238/16/230.29 EPA 8260D /5030A3.92Xylenes, total
Gasoline Range
mg/kg dry 8/16/238/16/232.87 EPA 8260B/C 5035A165Gasoline Range Organics
Diesel Range
mg/kg dry 8/15/238/15/2357EPA 8015C/3550B326Diesel Range Organics
Project Name: Rally Stop #13 CtF WO#: 23H1203
www.ChemtechFord.com
Page 2 of 20Page 2 of 21
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
8/14/23 13:44 @ 10.0 °C
8/21/2023
Rally Stop #13
Sample ID: SW, 18'
Lab ID: 23H1203-02Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 8/8/23 14:15
Preparation
Date/Time
Sampled By: Dave Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%8/16/238/15/230.1 CTF800094.7Total Solids
MBTEXn
mg/kg dry 8/16/238/16/230.11 EPA 8260D /5030ANDBenzene
mg/kg dry 8/16/238/16/230.26 EPA 8260D /5030ANDEthylbenzene
mg/kg dry 8/16/238/16/230.11 EPA 8260D /5030ANDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 8/16/238/16/230.26 EPA 8260D /5030ANDNaphthalene
mg/kg dry 8/16/238/16/230.26 EPA 8260D /5030ANDToluene
mg/kg dry 8/16/238/16/230.26 EPA 8260D /5030ANDXylenes, total
Gasoline Range
mg/kg dry 8/16/238/16/232.64 EPA 8260B/C 5035ANDGasoline Range Organics
Diesel Range
mg/kg dry 8/15/238/15/2353EPA 8015C/3550B487Diesel Range Organics
Project Name: Rally Stop #13 CtF WO#: 23H1203
www.ChemtechFord.com
Page 3 of 20Page 3 of 21
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
8/14/23 13:44 @ 10.0 °C
8/21/2023
Rally Stop #13
Sample ID: S-1, 9'
Lab ID: 23H1203-03Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 8/11/23 7:25
Preparation
Date/Time
Sampled By: Dave Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%8/16/238/15/230.1 CTF800080.1Total Solids
MBTEXn
mg/kg dry 8/16/238/16/230.12 EPA 8260D /5030ANDBenzene
mg/kg dry 8/16/238/16/230.31 EPA 8260D /5030ANDEthylbenzene
mg/kg dry 8/16/238/16/230.12 EPA 8260D /5030ANDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 8/16/238/16/230.31 EPA 8260D /5030A0.70Naphthalene
mg/kg dry 8/16/238/16/230.31 EPA 8260D /5030ANDToluene
mg/kg dry 8/16/238/16/230.31 EPA 8260D /5030ANDXylenes, total
Gasoline Range
mg/kg dry 8/16/238/16/233.12 EPA 8260B/C 5035A32.8Gasoline Range Organics
Diesel Range
mg/kg dry 8/15/238/15/2362EPA 8015C/3550B3270Diesel Range Organics
Project Name: Rally Stop #13 CtF WO#: 23H1203
www.ChemtechFord.com
Page 4 of 20Page 4 of 21
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
8/14/23 13:44 @ 10.0 °C
8/21/2023
Rally Stop #13
Sample ID: S-1, 11'
Lab ID: 23H1203-04Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 8/11/23 7:30
Preparation
Date/Time
Sampled By: Dave Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%8/16/238/15/230.1 CTF800078.4Total Solids
MBTEXn
mg/kg dry 8/16/238/16/230.13 EPA 8260D /5030ANDBenzene
mg/kg dry 8/16/238/16/230.32 EPA 8260D /5030ANDEthylbenzene
mg/kg dry 8/16/238/16/230.13 EPA 8260D /5030ANDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 8/16/238/16/230.32 EPA 8260D /5030A1.54Naphthalene
mg/kg dry 8/16/238/16/230.32 EPA 8260D /5030ANDToluene
mg/kg dry 8/16/238/16/230.32 EPA 8260D /5030A0.48Xylenes, total
Gasoline Range
mg/kg dry 8/16/238/16/233.19 EPA 8260B/C 5035A28.0Gasoline Range Organics
Diesel Range
mg/kg dry 8/15/238/15/2364EPA 8015C/3550B347Diesel Range Organics
Project Name: Rally Stop #13 CtF WO#: 23H1203
www.ChemtechFord.com
Page 5 of 20Page 5 of 21
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
8/14/23 13:44 @ 10.0 °C
8/21/2023
Rally Stop #13
Sample ID: S-1, 15'
Lab ID: 23H1203-05Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 8/11/23 7:35
Preparation
Date/Time
Sampled By: Dave Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%8/16/238/15/230.1 CTF800088.2Total Solids
MBTEXn
mg/kg dry 8/16/238/16/230.009 EPA 8260D /5030ANDBenzene
mg/kg dry 8/16/238/16/230.02 EPA 8260D /5030ANDEthylbenzene
mg/kg dry 8/16/238/16/230.009 EPA 8260D /5030ANDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 8/16/238/16/230.02 EPA 8260D /5030ANDNaphthalene
mg/kg dry 8/16/238/16/230.02 EPA 8260D /5030ANDToluene
mg/kg dry 8/16/238/16/230.02 EPA 8260D /5030ANDXylenes, total
Gasoline Range
mg/kg dry 8/16/238/16/230.227 EPA 8260B/C 5035ANDGasoline Range Organics
Diesel Range
mg/kg dry 8/15/238/15/2357EPA 8015C/3550BNDDiesel Range Organics
Project Name: Rally Stop #13 CtF WO#: 23H1203
www.ChemtechFord.com
Page 6 of 20Page 6 of 21
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
8/14/23 13:44 @ 10.0 °C
8/21/2023
Rally Stop #13
Sample ID: S-2, 10'
Lab ID: 23H1203-06Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 8/11/23 15:25
Preparation
Date/Time
Sampled By: Dave Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%8/16/238/15/230.1 CTF800084.1Total Solids
MBTEXn
mg/kg dry J-High-L8/16/238/16/230.12 EPA 8260D /5030A1.29Benzene
mg/kg dry 8/16/238/16/230.30 EPA 8260D /5030A25.5Ethylbenzene
mg/kg dry 8/16/238/16/230.12 EPA 8260D /5030ANDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 8/16/238/16/230.30 EPA 8260D /5030A27.7Naphthalene
mg/kg dry 8/16/238/16/230.30 EPA 8260D /5030ANDToluene
mg/kg dry 8/16/238/16/230.30 EPA 8260D /5030A7.61Xylenes, total
Gasoline Range
mg/kg dry 8/16/238/16/232.97 EPA 8260B/C 5035A501Gasoline Range Organics
Diesel Range
mg/kg dry 8/15/238/15/2359EPA 8015C/3550B2390Diesel Range Organics
Project Name: Rally Stop #13 CtF WO#: 23H1203
www.ChemtechFord.com
Page 7 of 20Page 7 of 21
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
8/14/23 13:44 @ 10.0 °C
8/21/2023
Rally Stop #13
Sample ID: SE, 10'
Lab ID: 23H1203-07Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 8/11/23 15:15
Preparation
Date/Time
Sampled By: Dave Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%8/16/238/15/230.1 CTF800080.6Total Solids
MBTEXn
mg/kg dry 8/16/238/16/230.01 EPA 8260D /5030ANDBenzene
mg/kg dry 8/16/238/16/230.03 EPA 8260D /5030ANDEthylbenzene
mg/kg dry 8/16/238/16/230.01 EPA 8260D /5030ANDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 8/16/238/16/230.03 EPA 8260D /5030ANDNaphthalene
mg/kg dry 8/16/238/16/230.03 EPA 8260D /5030ANDToluene
mg/kg dry 8/16/238/16/230.03 EPA 8260D /5030ANDXylenes, total
Gasoline Range
mg/kg dry 8/16/238/16/230.301 EPA 8260B/C 5035ANDGasoline Range Organics
Diesel Range
mg/kg dry 8/15/238/15/2362EPA 8015C/3550BNDDiesel Range Organics
Project Name: Rally Stop #13 CtF WO#: 23H1203
www.ChemtechFord.com
Page 8 of 20Page 8 of 21
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
8/14/23 13:44 @ 10.0 °C
8/21/2023
Rally Stop #13
Sample ID: E, NE, 10'
Lab ID: 23H1203-08Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 8/11/23 14:00
Preparation
Date/Time
Sampled By: Dave Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%8/16/238/15/230.1 CTF800087.6Total Solids
MBTEXn
mg/kg dry 8/16/238/16/230.11 EPA 8260D /5030ANDBenzene
mg/kg dry 8/16/238/16/230.29 EPA 8260D /5030A18.5Ethylbenzene
mg/kg dry 8/16/238/16/230.11 EPA 8260D /5030ANDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 8/16/238/16/230.29 EPA 8260D /5030A16.8Naphthalene
mg/kg dry 8/16/238/16/230.29 EPA 8260D /5030ANDToluene
mg/kg dry 8/16/238/16/230.29 EPA 8260D /5030A1.04Xylenes, total
Gasoline Range
mg/kg dry 8/16/238/16/232.85 EPA 8260B/C 5035A321Gasoline Range Organics
Diesel Range
mg/kg dry 8/15/238/15/2357EPA 8015C/3550B3010Diesel Range Organics
Project Name: Rally Stop #13 CtF WO#: 23H1203
www.ChemtechFord.com
Page 9 of 20Page 9 of 21
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
8/14/23 13:44 @ 10.0 °C
8/21/2023
Rally Stop #13
Sample ID: Bldg SW, 18'
Lab ID: 23H1203-09Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 8/9/23 8:30
Preparation
Date/Time
Sampled By: Dave Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%8/16/238/15/230.1 CTF800094.2Total Solids
MBTEXn
mg/kg dry 8/16/238/16/230.009 EPA 8260D /5030ANDBenzene
mg/kg dry 8/16/238/16/230.02 EPA 8260D /5030ANDEthylbenzene
mg/kg dry 8/16/238/16/230.009 EPA 8260D /5030ANDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 8/16/238/16/230.02 EPA 8260D /5030ANDNaphthalene
mg/kg dry 8/16/238/16/230.02 EPA 8260D /5030ANDToluene
mg/kg dry 8/16/238/16/230.02 EPA 8260D /5030ANDXylenes, total
Gasoline Range
mg/kg dry 8/16/238/16/230.223 EPA 8260B/C 5035ANDGasoline Range Organics
Diesel Range
mg/kg dry 8/15/238/15/2353EPA 8015C/3550B73Diesel Range Organics
Project Name: Rally Stop #13 CtF WO#: 23H1203
www.ChemtechFord.com
Page 10 of 20Page 10 of 21
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
8/14/23 13:44 @ 10.0 °C
8/21/2023
Rally Stop #13
Sample ID: Bldg SW, 10'
Lab ID: 23H1203-10Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 8/9/23 8:45
Preparation
Date/Time
Sampled By: Dave Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%8/16/238/15/230.1 CTF800082.4Total Solids
MBTEXn
mg/kg dry 8/16/238/16/230.12 EPA 8260D /5030ANDBenzene
mg/kg dry 8/16/238/16/230.30 EPA 8260D /5030A2.10Ethylbenzene
mg/kg dry 8/16/238/16/230.12 EPA 8260D /5030ANDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 8/16/238/16/230.30 EPA 8260D /5030A2.75Naphthalene
mg/kg dry 8/16/238/16/230.30 EPA 8260D /5030ANDToluene
mg/kg dry 8/16/238/16/230.30 EPA 8260D /5030ANDXylenes, total
Gasoline Range
mg/kg dry 8/16/238/16/233.03 EPA 8260B/C 5035A83.3Gasoline Range Organics
Diesel Range
mg/kg dry 8/15/238/15/2361EPA 8015C/3550B5040Diesel Range Organics
Project Name: Rally Stop #13 CtF WO#: 23H1203
www.ChemtechFord.com
Page 11 of 20Page 11 of 21
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
8/14/23 13:44 @ 10.0 °C
8/21/2023
Rally Stop #13
Sample ID: Bldg, Mid, 10'
Lab ID: 23H1203-11Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 8/10/23 7:15
Preparation
Date/Time
Sampled By: Dave Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%8/16/238/15/230.1 CTF800082.7Total Solids
MBTEXn
mg/kg dry J-High-L8/16/238/16/230.12 EPA 8260D /5030A0.75Benzene
mg/kg dry 8/16/238/16/230.30 EPA 8260D /5030A11.6Ethylbenzene
mg/kg dry 8/16/238/16/230.12 EPA 8260D /5030ANDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 8/16/238/16/230.30 EPA 8260D /5030A6.20Naphthalene
mg/kg dry 8/16/238/16/230.30 EPA 8260D /5030ANDToluene
mg/kg dry 8/16/238/16/230.30 EPA 8260D /5030A1.18Xylenes, total
Gasoline Range
mg/kg dry 8/16/238/16/233.02 EPA 8260B/C 5035A171Gasoline Range Organics
Diesel Range
mg/kg dry 8/15/238/15/2360EPA 8015C/3550B1740Diesel Range Organics
Project Name: Rally Stop #13 CtF WO#: 23H1203
www.ChemtechFord.com
Page 12 of 20Page 12 of 21
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
8/14/23 13:44 @ 10.0 °C
8/21/2023
Rally Stop #13
Sample ID: Bldg, SE, 10'
Lab ID: 23H1203-12Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 8/11/23 8:30
Preparation
Date/Time
Sampled By: Dave Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%8/16/238/15/230.1 CTF800085.1Total Solids
MBTEXn
mg/kg dry 8/16/238/16/230.12 EPA 8260D /5030ANDBenzene
mg/kg dry 8/16/238/16/230.29 EPA 8260D /5030A3.57Ethylbenzene
mg/kg dry 8/16/238/16/230.12 EPA 8260D /5030ANDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 8/16/238/16/230.29 EPA 8260D /5030A4.74Naphthalene
mg/kg dry 8/16/238/16/230.29 EPA 8260D /5030ANDToluene
mg/kg dry 8/16/238/16/230.29 EPA 8260D /5030A1.26Xylenes, total
Gasoline Range
mg/kg dry 8/16/238/16/232.94 EPA 8260B/C 5035A80.4Gasoline Range Organics
Diesel Range
mg/kg dry 8/15/238/15/2359EPA 8015C/3550B239Diesel Range Organics
Project Name: Rally Stop #13 CtF WO#: 23H1203
www.ChemtechFord.com
Page 13 of 20Page 13 of 21
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
8/14/23 13:44 @ 10.0 °C
8/21/2023
Rally Stop #13
Sample ID: B-5, 18'
Lab ID: 23H1203-13Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 8/8/23 10:15
Preparation
Date/Time
Sampled By: Dave Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%8/16/238/15/230.1 CTF800092.4Total Solids
MBTEXn
mg/kg dry 8/16/238/16/230.01 EPA 8260D /5030ANDBenzene
mg/kg dry 8/16/238/16/230.03 EPA 8260D /5030ANDEthylbenzene
mg/kg dry 8/16/238/16/230.01 EPA 8260D /5030ANDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 8/16/238/16/230.03 EPA 8260D /5030ANDNaphthalene
mg/kg dry 8/16/238/16/230.03 EPA 8260D /5030ANDToluene
mg/kg dry 8/16/238/16/230.03 EPA 8260D /5030ANDXylenes, total
Gasoline Range
mg/kg dry 8/16/238/16/230.263 EPA 8260B/C 5035ANDGasoline Range Organics
Diesel Range
mg/kg dry 8/15/238/15/2354EPA 8015C/3550BNDDiesel Range Organics
Project Name: Rally Stop #13 CtF WO#: 23H1203
www.ChemtechFord.com
Page 14 of 20Page 14 of 21
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
8/14/23 13:44 @ 10.0 °C
8/21/2023
Rally Stop #13
Sample ID: B-6, 18'
Lab ID: 23H1203-14Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 8/8/23 10:30
Preparation
Date/Time
Sampled By: Dave Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%8/16/238/15/230.1 CTF800083.2Total Solids
MBTEXn
mg/kg dry 8/16/238/16/230.01 EPA 8260D /5030ANDBenzene
mg/kg dry 8/16/238/16/230.02 EPA 8260D /5030ANDEthylbenzene
mg/kg dry 8/16/238/16/230.01 EPA 8260D /5030ANDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 8/16/238/16/230.02 EPA 8260D /5030ANDNaphthalene
mg/kg dry 8/16/238/16/230.02 EPA 8260D /5030ANDToluene
mg/kg dry 8/16/238/16/230.02 EPA 8260D /5030ANDXylenes, total
Gasoline Range
mg/kg dry 8/16/238/16/230.242 EPA 8260B/C 5035ANDGasoline Range Organics
Diesel Range
mg/kg dry 8/15/238/15/2360EPA 8015C/3550BNDDiesel Range Organics
Project Name: Rally Stop #13 CtF WO#: 23H1203
www.ChemtechFord.com
Page 15 of 20Page 15 of 21
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
8/14/23 13:44 @ 10.0 °C
8/21/2023
Rally Stop #13
Sample ID: B-7, 18'
Lab ID: 23H1203-15Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 8/9/23 11:30
Preparation
Date/Time
Sampled By: Dave Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%8/16/238/15/230.1 CTF800092.1Total Solids
MBTEXn
mg/kg dry 8/16/238/16/230.009 EPA 8260D /5030ANDBenzene
mg/kg dry 8/16/238/16/230.02 EPA 8260D /5030ANDEthylbenzene
mg/kg dry 8/16/238/16/230.009 EPA 8260D /5030ANDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 8/16/238/16/230.02 EPA 8260D /5030ANDNaphthalene
mg/kg dry 8/16/238/16/230.02 EPA 8260D /5030ANDToluene
mg/kg dry 8/16/238/16/230.02 EPA 8260D /5030ANDXylenes, total
Gasoline Range
mg/kg dry 8/16/238/16/230.234 EPA 8260B/C 5035ANDGasoline Range Organics
Diesel Range
mg/kg dry 8/15/238/15/2354EPA 8015C/3550BNDDiesel Range Organics
Project Name: Rally Stop #13 CtF WO#: 23H1203
www.ChemtechFord.com
Page 16 of 20Page 16 of 21
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
8/14/23 13:44 @ 10.0 °C
8/21/2023
Rally Stop #13
Sample ID: B-8, 18'
Lab ID: 23H1203-16Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 8/10/23 8:35
Preparation
Date/Time
Sampled By: Dave Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%8/16/238/15/230.1 CTF800091.9Total Solids
MBTEXn
mg/kg dry 8/16/238/16/230.11 EPA 8260D /5030ANDBenzene
mg/kg dry 8/16/238/16/230.27 EPA 8260D /5030ANDEthylbenzene
mg/kg dry 8/16/238/16/230.11 EPA 8260D /5030ANDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 8/16/238/16/230.27 EPA 8260D /5030A0.33Naphthalene
mg/kg dry 8/16/238/16/230.27 EPA 8260D /5030ANDToluene
mg/kg dry 8/16/238/16/230.27 EPA 8260D /5030ANDXylenes, total
Gasoline Range
mg/kg dry 8/16/238/16/232.72 EPA 8260B/C 5035A4.23Gasoline Range Organics
Diesel Range
mg/kg dry 8/15/238/15/2354EPA 8015C/3550B177Diesel Range Organics
Project Name: Rally Stop #13 CtF WO#: 23H1203
www.ChemtechFord.com
Page 17 of 20Page 17 of 21
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
8/14/23 13:44 @ 10.0 °C
8/21/2023
Rally Stop #13
Sample ID: B-9, 18'
Lab ID: 23H1203-17Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 8/11/23 14:05
Preparation
Date/Time
Sampled By: Dave Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%8/16/238/15/230.1 CTF800094.8Total Solids
MBTEXn
mg/kg dry 8/16/238/16/230.11 EPA 8260D /5030ANDBenzene
mg/kg dry 8/16/238/16/230.26 EPA 8260D /5030ANDEthylbenzene
mg/kg dry 8/16/238/16/230.11 EPA 8260D /5030ANDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 8/16/238/16/230.26 EPA 8260D /5030A0.44Naphthalene
mg/kg dry 8/16/238/16/230.26 EPA 8260D /5030ANDToluene
mg/kg dry 8/16/238/16/230.26 EPA 8260D /5030ANDXylenes, total
Gasoline Range
mg/kg dry 8/16/238/16/232.64 EPA 8260B/C 5035ANDGasoline Range Organics
Diesel Range
mg/kg dry 8/15/238/15/2353EPA 8015C/3550B284Diesel Range Organics
Project Name: Rally Stop #13 CtF WO#: 23H1203
www.ChemtechFord.com
Page 18 of 20Page 18 of 21
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
8/14/23 13:44 @ 10.0 °C
8/21/2023
Rally Stop #13
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-High-L = Analyte estimated high based on LCS recovery
Project Name: Rally Stop #13 CtF WO#: 23H1203
www.ChemtechFord.com
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