DERR-2025-002544

Rockwell Solutions, Inc., 718 E. Bridger Lane, Elk Ridge, UT 84651 801-361-2930 [e-mail]
1
Rockwell Solutions, Inc.
718 E Bridger Lane
Elk Ridge, UT 84651
[phone]
February 20, 2025

Todd Evans
West Boulevard Shell
297 W St George Blvd
St George, UT 84770

Re: Subsurface Investigation
West Boulevard Shell Facility ID: 6000021
297 W St George Blvd Release ID: OLY
St George, Utah

Dear Mr. Evans:

Rockwell Solutions, Inc. has completed a subsurface investigation at the above-referenced facility
in accordance with State of Utah Division of Environmental Response and Remediation (DERR)
guidelines.

INTRODUCTION

The West Boulevard Shell is an active gas and service station at 297 W St George Boulevard in St
George, Utah. A leaky fitting on the gasoline piping was discovered below the northeast dispenser
on October 30, 2025 during a DERR inspection. The fitting had not been tightened properly after a
recent line tightness test. A release was reported and DERR assigned the site release code OLY and
requested a subsurface investigation.

The facility contains a 10,000-gallon gasoline UST, a 6,000-gallon gasoline UST, and a 4,000-
gallon diesel UST. Three dispensers are located below the canopy north of the facility building.
The building houses a front office and three bays for automotive work.

Water, sewer, and natural gas lines run from 300 West to the onsite building. Electrical and phone
lines are overhead. See Figure 1.

METHODOLOGY

Five borings were installed at and around the northeast dispenser on January 6, 2025 using direct
push methodology. Field observations indicated potential contamination in boring B-3, south of the
release. Therefore, a sixth boring was installed south of B-3. Direct Push Services was employed
as the drilling contractor under the supervision of a Rockwell Solutions representative.

Subsurface Investigation, West Boulevard Shell, St. George, Utah, Facility #6000021, Release OLY

Rockwell Solutions, Inc., 718 E. Bridger Lane, Elk Ridge, UT 84651 801-361-2930 [e-mail]
2
Five-foot soil core samples were collected continuously from the direct push borings. A portion of
the soil core was put in a zip-lock baggie to allow hydrocarbons to volatilize. The air in the zip lock
baggie was then screened with a photoionization detector (PID). The sample with the highest PID
reading or the soil interval above the apparent water table in each boring was submitted for
laboratory analysis of MTBE, benzene, toluene, ethylbenzene, xylenes, naphthalene (MBTEXN)
total petroleum hydrocarbons-gasoline range organics (TPH-GRO) using EPA Method 8260 and
TPH-diesel range organics (TPH-DRO) using EPA Method 8015.

Groundwater was encountered at approximately twelve to thirteen feet below grade (bg).
Groundwater samples were collected using a peristaltic pump from each boring. Groundwater
samples were also collected from existing monitoring wells MW-3, MW-4, and MW-5, located
around the leaking dispenser, and MW-7, located on the opposite side of the tank basin
downgradient from the dispenser. The groundwater samples were submitted for laboratory analysis
of MBTEXN and TPH-GRO using EPA Method 8260, and TPH-DRO using EPA Method 8015.

RESULTS

Soil Type
Soil type was evaluated during the subsurface investigation by field analysis of soil samples. The
native soil at the site generally consists of alternating layers of sand (SW) and silty sand (SM) to
fifteen feet bg with a two to three-foot clay (CL) layer beginning at approximately twelve feet bg.
Boring logs are attached.

Soil Analytical Results
Table 1 lists the analytical results of the soil samples collected during the subsurface investigation.
Hydrocarbons in sample B-1, 10’, located adjacent to the leaking dispenser, exceeded Tier 1 levels.
No other soil samples exceeded Tier 1 or Initial Screening Levels (ISLs). The laboratory analytical
reports and chain-of-custody records for soil samples collected during the subsurface investigation
are attached. PID readings are shown on the boring logs.

Groundwater Analytical Results
Table 2 lists the analytical results of the groundwater samples collected during the subsurface
investigation. None of the samples contained hydrocarbons that exceeded Tier 1 levels. Samples
from B-1, B-3, B-4, and MW-7 exceeded some ISL concentrations. The laboratory analytical
reports and chain-of-custody records for samples collected during the subsurface investigation are
attached.

Groundwater Depth and Flow
Table 2 lists the depth to water measurements at each monitoring well. Depth to the water table is
an average of approximately 12.5 feet below the tops of casing. Groundwater flow was to the
southeast on January 6, 2025. Figure 2 is a groundwater contour map.

TIER 1 CRITERIA

Land Use
The site is located in a commercial area. No residences are located within 500 feet of the site.
Subsurface Investigation, West Boulevard Shell, St. George, Utah, Facility #6000021, Release OLY

Rockwell Solutions, Inc., 718 E. Bridger Lane, Elk Ridge, UT 84651 801-361-2930 [e-mail]
3

Utilities
Locations of buried utility lines in the investigation area were discussed previously. The exact
depths to the other utility lines are not known, but are estimated to be approximately two to three
feet.

Receptors
A well search of the Water Rights database indicates a water well approximately 300 feet northwest
of the dispenser. The well was installed in 1960. The area, which is apparently upgradient of the
site, is now covered with buildings and parking lots and the well may have been destroyed. See
Figure 3.

CONCLUSIONS AND RECOMMENDATIONS

The extents of soil and groundwater contamination have been defined. Soil contamination appears
to be limited to the area immediately surrounding the northeast dispenser. Groundwater has not
been significantly impacted. The fuel system is scheduled to be closed in the fourth quarter of
2025. Contaminated soil can be excavated when the USTs and dispensers are being removed at that
time.

Please feel free to contact me should you have any questions or concerns at 801-361-2930.

Sincerely,

David S Hansen
Rockwell Solutions, Inc.
Certified UST Consultant CC130

cc: Alex Thompson, DERR
MW-4
MW-5
MW-3
NORTH
Approx. scale in feet
00 20
C-Store
TASs
tBroadwayS
Custer St
t
h
u

A
v
A
r
r
e
Figure 1 Site Map
Bear Cave
Market
Bear Cave
Drive-In
Boring
rWate
G sa
Sewer
MW-7
B-6
B-5
B-2B-4
B-3
B-1
Monitoring Well West Boulevard Shell
297 W St George Boulevard
St George, Utah
MW-4
88.05
MW-5
89.01
MW-3
87.85
NORTH
Approx. scale in feet
00 20
C-Store
tBroadwayS
t
h
u

A
v
A
r
r
e
Figure 2 Groundwater Elevation
Map 1/6/25
Bear Cave
Market
Bear Cave
Drive-In
MW-7
86.75
Monitoring Well West Boulevard Shell
297 W St George Boulevard
St George, Utah
-8 9 .0 -
7-8 .5 -
8 .0
-8 -
8 .-
-8 5
7-8 .0 -
94.09 Groundwater Elevation (ft)
= Groundwater Elevation Contour (ft)
Water Rights in Area
Water Well Location
NORTH
Figure 3
West Boulevard Shell
297 W St George Blvd
St George, Utah
Site
500’
Sampling
Location
Depth
(ft)Date MTBE
(mg/kg)
Benzene
(mg/kg)
Toluene
(mg/kg)
Ethyl-
benzene
(mg/kg)
Total
Xylenes
(mg/kg)
Naph-
thalene
(mg/kg)
TPH-
GRO
(mg/kg)
TPH-
DRO
(mg/kg)
0.3 0.2 9 5 142 51 150 500
0.3 0.9 25 23 142 51 1,500 5,000
B-1, 5' 5 1/6/2025 <0.17 <0.11 <0.28 <0.28 0.92 0.35 42 480
B-1, 10' 10 1/6/2025 <0.18 2.28 76.5 32.3 167 1.99 1170 1390
B-1, 12.5' 12.5 1/6/2025 <0.02 0.04 0.69 0.32 2.55 0.03 7.78 <59
B-1, 15' 15 1/6/2025 <0.02 0.02 0.05 <0.03 <0.09 <0.03 <0.290 <62
B-2, 11' 11 1/6/2025 <0.02 0.02 0.07 <0.03 <0.08 <0.03 <0.272 74
B-3, 10' 10 1/6/2025 <0.16 <0.11 <0.27 <0.27 <0.80 <0.27 <2.66 <53
B-3, 12.5' 12.5 1/6/2025 <0.02 0.01 0.15 0.10 0.74 0.47 81.8 <57
B-4, 12.5 12.5 1/6/2025 <0.02 <0.01 0.04 <0.03 <0.08 <0.03 <0.255 <58
B-5, 12.5' 12.5 1/6/2025 <0.02 <0.01 <0.03 <0.03 <0.08 <0.03 0.302 <60
B-6, 11.5' 11.5 1/6/2025 <0.01 0.02 0.05 <0.02 <0.07 <0.02 <0.230 <59
TPH-GRO = Total petroleum hydrocarbons-gasoline range organics
TPH-DRO = Total petroleum hydrocarbons - diesel range organics
mg/kg = milligrams per kilogram, which approximates parts per million
ISL = Initial Screening Level
Pink shading = exceeds ISL
Yellow shading = exceeds Tier 1 level
Table 1
ISL's
RBCA Tier 1 Screening Levels
Soil Analytical Results
West Boulevard Shell, 297 W St George Blvd, St George, Utah (UST No. 6000021, LUST No. OLI)
Sample
Number TOC
Elevation
Date
Collected
Depth to
Water (ft)
GW
Elevation
(ft)
MTBE
(mg/L)
Benzene
(mg/L)
Toluene
(mg/L)
Ethyl-
benzene
(mg/L)
Total
Xylenes
(mg/L)
Naph-
thalene
(mg/L)
TPH-
GRO
(mg/L)
TPH-
DRO
(mg/L)
0.2 0.005 1 0.7 10 0.7 1 1
0.2 0.3 3 4 10 0.7 10 10
B-1 1/6/2025 <0.008 0.088 0.462 0.085 0.438 <0.012 1.45 <1
B-2 1/6/2025 <0.008 <0.005 0.052 <0.012 0.055 <0.012 <0.125 <1
B-3 1/6/2025 <0.008 0.093 0.241 0.033 0.143 <0.012 0.51 <1
B-4 1/6/2025 <0.008 0.024 <0.012 <0.012 <0.038 <0.012 0.156 <1
B-5 1/6/2025 <0.008 <0.005 <0.012 <0.012 <0.038 <0.012 <0.125 <1
B-6 1/6/2025 <0.008 <0.005 <0.012 <0.012 <0.038 <0.012 <0.125 <1
MW-3 1/6/2025 12.43 87.85 <0.008 <0.005 <0.012 <0.012 <0.038 <0.012 <0.125 <1
100.28
MW-4 1/6/2025 12.33 88.05 <0.008 <0.005 <0.012 <0.012 <0.038 <0.012 <0.125 <1
100.38
MW-5 1/6/2025 11.65 89.01 <0.008 <0.005 <0.012 <0.012 <0.038 <0.012 <0.125 <1
100.66
MW-7 1/6/2025 13.56 86.75 <0.008 0.032 <0.012 0.025 <0.038 <0.012 <0.125 <1
100.31
TPH-GRO = Total petroleum hydrocarbons-gasoline range organics
TPH-DRO = Total petroleum hydrocarbons - diesel range organics
mg/L = milligrams per liter, which approximates parts per million
ISL = Initial Screening Level
Pink shading = exceeds ISL
Table 2
ISL's
RBCA Tier 1 Screening
Groundwater Analytical Results
West Boulevard Shell, 297 W St George Blvd, St George, Utah (UST No. 6000021, LUST No. OLI)
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: 25A0742
Project: West Blvd Shell
1/20/2025
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 24
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:
1/10/25 16:53 @ 5.4 °C
1/20/2025
West Blvd Shell
Sample ID: B-1, 5'
Lab ID: 25A0742-01Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 1/6/25 10:20
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%1/13/251/13/250.1 CTF800089.1Total Solids
MBTEXn
mg/kg dry 1/13/251/13/250.11 EPA 8260D/5030BNDBenzene
mg/kg dry 1/13/251/13/250.28 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 1/13/251/13/250.17 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 1/13/251/13/250.28 EPA 8260D/5030B0.35Naphthalene
mg/kg dry 1/13/251/13/250.28 EPA 8260D/5030BNDToluene
mg/kg dry 1/13/251/13/250.84 EPA 8260D/5030B0.92Xylenes, total
Gasoline Range
mg/kg dry 1/13/251/13/252.81 EPA 8260B/C 5035A/[CALC]42.0Gasoline Range Organics
Diesel Range
mg/kg dry 1/15/251/14/2556EPA 8015 C480Diesel Range Organics
Project Name: West Blvd Shell CtF WO#: 25A0742
www.ChemtechFord.com
Page 2 of 23Page 2 of 24
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:
1/10/25 16:53 @ 5.4 °C
1/20/2025
West Blvd Shell
Sample ID: B-1, 10'
Lab ID: 25A0742-02Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 1/6/25 10:30
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%1/13/251/13/250.1 CTF800085.4Total Solids
MBTEXn
mg/kg dry 1/13/251/13/250.12 EPA 8260D/5030B2.28Benzene
mg/kg dry 1/13/251/13/252.93 EPA 8260D/5030B32.3Ethylbenzene
mg/kg dry 1/13/251/13/250.18 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 1/13/251/13/250.29 EPA 8260D/5030B1.99Naphthalene
mg/kg dry 1/13/251/13/252.93 EPA 8260D/5030B76.5Toluene
mg/kg dry 1/13/251/13/258.78 EPA 8260D/5030B167Xylenes, total
Gasoline Range
mg/kg dry 1/13/251/13/258.78 EPA 8260B/C 5035A/[CALC]1170Gasoline Range Organics
Diesel Range
mg/kg dry 1/15/251/14/2559EPA 8015 C1390Diesel Range Organics
Project Name: West Blvd Shell CtF WO#: 25A0742
www.ChemtechFord.com
Page 3 of 23Page 3 of 24
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:
1/10/25 16:53 @ 5.4 °C
1/20/2025
West Blvd Shell
Sample ID: B-1, 12.5'
Lab ID: 25A0742-03Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 1/6/25 10:40
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%1/13/251/13/250.1 CTF800084.9Total Solids
MBTEXn
mg/kg dry 1/13/251/13/250.01 EPA 8260D/5030B0.04Benzene
mg/kg dry 1/13/251/13/250.03 EPA 8260D/5030B0.32Ethylbenzene
mg/kg dry 1/13/251/13/250.02 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 1/13/251/13/250.03 EPA 8260D/5030B0.03Naphthalene
mg/kg dry 1/13/251/13/250.03 EPA 8260D/5030B0.69Toluene
mg/kg dry 1/13/251/13/250.09 EPA 8260D/5030B2.55Xylenes, total
Gasoline Range
mg/kg dry 1/13/251/13/250.295 EPA 8260B/C 5035A/[CALC]7.78Gasoline Range Organics
Diesel Range
mg/kg dry 1/15/251/14/2559EPA 8015 CNDDiesel Range Organics
Project Name: West Blvd Shell CtF WO#: 25A0742
www.ChemtechFord.com
Page 4 of 23Page 4 of 24
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:
1/10/25 16:53 @ 5.4 °C
1/20/2025
West Blvd Shell
Sample ID: B-1, 15'
Lab ID: 25A0742-04Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 1/6/25 10:50
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%1/13/251/13/250.1 CTF800080.6Total Solids
MBTEXn
mg/kg dry 1/13/251/13/250.01 EPA 8260D/5030B0.02Benzene
mg/kg dry 1/13/251/13/250.03 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 1/13/251/13/250.02 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 1/13/251/13/250.03 EPA 8260D/5030BNDNaphthalene
mg/kg dry 1/13/251/13/250.03 EPA 8260D/5030B0.05Toluene
mg/kg dry 1/13/251/13/250.09 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 1/13/251/13/250.290 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 1/15/251/14/2562EPA 8015 CNDDiesel Range Organics
Project Name: West Blvd Shell CtF WO#: 25A0742
www.ChemtechFord.com
Page 5 of 23Page 5 of 24
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:
1/10/25 16:53 @ 5.4 °C
1/20/2025
West Blvd Shell
Sample ID: B-2 , 11'
Lab ID: 25A0742-05Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 1/6/25 12:00
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%1/13/251/13/250.1 CTF800085.9Total Solids
MBTEXn
mg/kg dry 1/13/251/13/250.01 EPA 8260D/5030B0.02Benzene
mg/kg dry 1/13/251/13/250.03 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 1/13/251/13/250.02 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 1/13/251/13/250.03 EPA 8260D/5030BNDNaphthalene
mg/kg dry 1/13/251/13/250.03 EPA 8260D/5030B0.07Toluene
mg/kg dry 1/13/251/13/250.08 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 1/13/251/13/250.272 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 1/15/251/14/2558EPA 8015 C74Diesel Range Organics
Project Name: West Blvd Shell CtF WO#: 25A0742
www.ChemtechFord.com
Page 6 of 23Page 6 of 24
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:
1/10/25 16:53 @ 5.4 °C
1/20/2025
West Blvd Shell
Sample ID: B-3 -10'
Lab ID: 25A0742-06Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 1/6/25 12:50
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%1/13/251/13/250.1 CTF800093.9Total Solids
MBTEXn
mg/kg dry 1/14/251/14/250.11 EPA 8260D/5030BNDBenzene
mg/kg dry 1/14/251/14/250.27 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 1/14/251/14/250.16 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 1/14/251/14/250.27 EPA 8260D/5030BNDNaphthalene
mg/kg dry 1/14/251/14/250.27 EPA 8260D/5030BNDToluene
mg/kg dry 1/14/251/14/250.80 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 1/14/251/14/252.66 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 1/15/251/14/2553EPA 8015 CNDDiesel Range Organics
Project Name: West Blvd Shell CtF WO#: 25A0742
www.ChemtechFord.com
Page 7 of 23Page 7 of 24
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:
1/10/25 16:53 @ 5.4 °C
1/20/2025
West Blvd Shell
Sample ID: B-3 , 12.5
Lab ID: 25A0742-07Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 1/6/25 13:00
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%1/13/251/13/250.1 CTF800088.3Total Solids
MBTEXn
mg/kg dry 1/13/251/13/250.01 EPA 8260D/5030B0.01Benzene
mg/kg dry 1/13/251/13/250.03 EPA 8260D/5030B0.10Ethylbenzene
mg/kg dry 1/13/251/13/250.02 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 1/13/251/13/250.03 EPA 8260D/5030B0.47Naphthalene
mg/kg dry 1/13/251/13/250.03 EPA 8260D/5030B0.15Toluene
mg/kg dry 1/13/251/13/250.08 EPA 8260D/5030B0.74Xylenes, total
Gasoline Range
mg/kg dry 1/13/251/13/250.278 EPA 8260B/C 5035A/[CALC]81.8Gasoline Range Organics
Diesel Range
mg/kg dry 1/15/251/14/2557EPA 8015 CNDDiesel Range Organics
Project Name: West Blvd Shell CtF WO#: 25A0742
www.ChemtechFord.com
Page 8 of 23Page 8 of 24
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:
1/10/25 16:53 @ 5.4 °C
1/20/2025
West Blvd Shell
Sample ID: B-4 , 12.5'
Lab ID: 25A0742-08Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 1/6/25 14:30
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%1/13/251/13/250.1 CTF800086.8Total Solids
MBTEXn
mg/kg dry 1/14/251/14/250.01 EPA 8260D/5030B0.02Benzene
mg/kg dry 1/14/251/14/250.03 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 1/14/251/14/250.02 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 1/14/251/14/250.03 EPA 8260D/5030BNDNaphthalene
mg/kg dry 1/14/251/14/250.03 EPA 8260D/5030B0.04Toluene
mg/kg dry 1/14/251/14/250.08 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 1/14/251/14/250.255 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 1/15/251/14/2558EPA 8015 CNDDiesel Range Organics
Project Name: West Blvd Shell CtF WO#: 25A0742
www.ChemtechFord.com
Page 9 of 23Page 9 of 24
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:
1/10/25 16:53 @ 5.4 °C
1/20/2025
West Blvd Shell
Sample ID: B-5 , 12.5'
Lab ID: 25A0742-09Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 1/6/25 15:40
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%1/13/251/13/250.1 CTF800083.9Total Solids
MBTEXn
mg/kg dry 1/13/251/13/250.01 EPA 8260D/5030BNDBenzene
mg/kg dry 1/13/251/13/250.03 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 1/13/251/13/250.02 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 1/13/251/13/250.03 EPA 8260D/5030BNDNaphthalene
mg/kg dry 1/13/251/13/250.03 EPA 8260D/5030B0.03Toluene
mg/kg dry 1/13/251/13/250.08 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 1/13/251/13/250.268 EPA 8260B/C 5035A/[CALC]0.302Gasoline Range Organics
Diesel Range
mg/kg dry 1/15/251/14/2560EPA 8015 CNDDiesel Range Organics
Project Name: West Blvd Shell CtF WO#: 25A0742
www.ChemtechFord.com
Page 10 of 23Page 10 of 24
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:
1/10/25 16:53 @ 5.4 °C
1/20/2025
West Blvd Shell
Sample ID: B-6 , 11.5'
Lab ID: 25A0742-10Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 1/6/25 16:50
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%1/13/251/13/250.1 CTF800085.0Total Solids
MBTEXn
mg/kg dry 1/13/251/13/250.009 EPA 8260D/5030B0.02Benzene
mg/kg dry 1/13/251/13/250.02 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 1/13/251/13/250.01 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 1/13/251/13/250.02 EPA 8260D/5030BNDNaphthalene
mg/kg dry 1/13/251/13/250.02 EPA 8260D/5030B0.05Toluene
mg/kg dry 1/13/251/13/250.07 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 1/13/251/13/250.230 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 1/15/251/14/2559EPA 8015 CNDDiesel Range Organics
Project Name: West Blvd Shell CtF WO#: 25A0742
www.ChemtechFord.com
Page 11 of 23Page 11 of 24
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:
1/10/25 16:53 @ 5.4 °C
1/20/2025
West Blvd Shell
Sample ID: B-1
Lab ID: 25A0742-11Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 1/6/25 11:20
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 1/13/251/13/250.005 EPA 8260D/5030B0.088Benzene
mg/L 1/13/251/13/250.012 EPA 8260D/5030B0.085Ethylbenzene
mg/L 1/13/251/13/250.008 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 1/13/251/13/250.012 EPA 8260D/5030BNDNaphthalene
mg/L 1/13/251/13/250.012 EPA 8260D/5030B0.462Toluene
mg/L MS-Low1/13/251/13/250.038 EPA 8260D/5030B0.438Xylenes, total
Gasoline Range
mg/L 1/13/251/13/250.125 EPA 8260B/C /5030A/[CALC]1.45Gasoline Range Organics
Diesel Range
mg/L 1/14/251/13/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: West Blvd Shell CtF WO#: 25A0742
www.ChemtechFord.com
Page 12 of 23Page 12 of 24
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:
1/10/25 16:53 @ 5.4 °C
1/20/2025
West Blvd Shell
Sample ID: B-2
Lab ID: 25A0742-12Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 1/6/25 12:30
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 1/13/251/13/250.005 EPA 8260D/5030BNDBenzene
mg/L 1/13/251/13/250.012 EPA 8260D/5030BNDEthylbenzene
mg/L 1/13/251/13/250.008 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 1/13/251/13/250.012 EPA 8260D/5030BNDNaphthalene
mg/L 1/13/251/13/250.012 EPA 8260D/5030B0.052Toluene
mg/L 1/13/251/13/250.038 EPA 8260D/5030B0.055Xylenes, total
Gasoline Range
mg/L 1/13/251/13/250.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 1/14/251/13/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: West Blvd Shell CtF WO#: 25A0742
www.ChemtechFord.com
Page 13 of 23Page 13 of 24
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:
1/10/25 16:53 @ 5.4 °C
1/20/2025
West Blvd Shell
Sample ID: B-3
Lab ID: 25A0742-13Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 1/6/25 14:00
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 1/13/251/13/250.005 EPA 8260D/5030B0.093Benzene
mg/L 1/13/251/13/250.012 EPA 8260D/5030B0.033Ethylbenzene
mg/L 1/13/251/13/250.008 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 1/13/251/13/250.012 EPA 8260D/5030BNDNaphthalene
mg/L 1/13/251/13/250.012 EPA 8260D/5030B0.241Toluene
mg/L 1/13/251/13/250.038 EPA 8260D/5030B0.143Xylenes, total
Gasoline Range
mg/L 1/13/251/13/250.125 EPA 8260B/C /5030A/[CALC]0.510Gasoline Range Organics
Diesel Range
mg/L 1/14/251/13/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: West Blvd Shell CtF WO#: 25A0742
www.ChemtechFord.com
Page 14 of 23Page 14 of 24
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:
1/10/25 16:53 @ 5.4 °C
1/20/2025
West Blvd Shell
Sample ID: B-4
Lab ID: 25A0742-14Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 1/6/25 15:00
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 1/13/251/13/250.005 EPA 8260D/5030B0.024Benzene
mg/L 1/13/251/13/250.012 EPA 8260D/5030BNDEthylbenzene
mg/L 1/13/251/13/250.008 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 1/13/251/13/250.012 EPA 8260D/5030BNDNaphthalene
mg/L 1/13/251/13/250.012 EPA 8260D/5030BNDToluene
mg/L 1/13/251/13/250.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 1/13/251/13/250.125 EPA 8260B/C /5030A/[CALC]0.156Gasoline Range Organics
Diesel Range
mg/L 1/14/251/13/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: West Blvd Shell CtF WO#: 25A0742
www.ChemtechFord.com
Page 15 of 23Page 15 of 24
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:
1/10/25 16:53 @ 5.4 °C
1/20/2025
West Blvd Shell
Sample ID: B-5
Lab ID: 25A0742-15Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 1/6/25 16:00
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 1/13/251/13/250.005 EPA 8260D/5030BNDBenzene
mg/L 1/13/251/13/250.012 EPA 8260D/5030BNDEthylbenzene
mg/L 1/13/251/13/250.008 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 1/13/251/13/250.012 EPA 8260D/5030BNDNaphthalene
mg/L 1/13/251/13/250.012 EPA 8260D/5030BNDToluene
mg/L 1/13/251/13/250.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 1/13/251/13/250.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 1/14/251/13/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: West Blvd Shell CtF WO#: 25A0742
www.ChemtechFord.com
Page 16 of 23Page 16 of 24
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:
1/10/25 16:53 @ 5.4 °C
1/20/2025
West Blvd Shell
Sample ID: B-6
Lab ID: 25A0742-16Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 1/6/25 17:15
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 1/13/251/13/250.005 EPA 8260D/5030BNDBenzene
mg/L 1/13/251/13/250.012 EPA 8260D/5030BNDEthylbenzene
mg/L 1/13/251/13/250.008 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 1/13/251/13/250.012 EPA 8260D/5030BNDNaphthalene
mg/L 1/13/251/13/250.012 EPA 8260D/5030BNDToluene
mg/L 1/13/251/13/250.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 1/13/251/13/250.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 1/14/251/13/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: West Blvd Shell CtF WO#: 25A0742
www.ChemtechFord.com
Page 17 of 23Page 17 of 24
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:
1/10/25 16:53 @ 5.4 °C
1/20/2025
West Blvd Shell
Sample ID: MW-3
Lab ID: 25A0742-17Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 1/6/25 9:45
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 1/13/251/13/250.005 EPA 8260D/5030BNDBenzene
mg/L 1/13/251/13/250.012 EPA 8260D/5030BNDEthylbenzene
mg/L 1/13/251/13/250.008 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 1/13/251/13/250.012 EPA 8260D/5030BNDNaphthalene
mg/L 1/13/251/13/250.012 EPA 8260D/5030BNDToluene
mg/L 1/13/251/13/250.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 1/13/251/13/250.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 1/14/251/13/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: West Blvd Shell CtF WO#: 25A0742
www.ChemtechFord.com
Page 18 of 23Page 18 of 24
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:
1/10/25 16:53 @ 5.4 °C
1/20/2025
West Blvd Shell
Sample ID: MW-4
Lab ID: 25A0742-18Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 1/6/25 11:30
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 1/13/251/13/250.005 EPA 8260D/5030BNDBenzene
mg/L 1/13/251/13/250.012 EPA 8260D/5030BNDEthylbenzene
mg/L 1/13/251/13/250.008 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 1/13/251/13/250.012 EPA 8260D/5030BNDNaphthalene
mg/L 1/13/251/13/250.012 EPA 8260D/5030BNDToluene
mg/L 1/13/251/13/250.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 1/13/251/13/250.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 1/14/251/13/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: West Blvd Shell CtF WO#: 25A0742
www.ChemtechFord.com
Page 19 of 23Page 19 of 24
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:
1/10/25 16:53 @ 5.4 °C
1/20/2025
West Blvd Shell
Sample ID: MW-5
Lab ID: 25A0742-19Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 1/6/25 12:15
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 1/13/251/13/250.005 EPA 8260D/5030BNDBenzene
mg/L 1/13/251/13/250.012 EPA 8260D/5030BNDEthylbenzene
mg/L 1/13/251/13/250.008 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 1/13/251/13/250.012 EPA 8260D/5030BNDNaphthalene
mg/L 1/13/251/13/250.012 EPA 8260D/5030BNDToluene
mg/L 1/13/251/13/250.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 1/13/251/13/250.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 1/14/251/13/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: West Blvd Shell CtF WO#: 25A0742
www.ChemtechFord.com
Page 20 of 23Page 20 of 24
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:
1/10/25 16:53 @ 5.4 °C
1/20/2025
West Blvd Shell
Sample ID: MW-7
Lab ID: 25A0742-20Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 1/6/25 17:20
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 1/13/251/13/250.005 EPA 8260D/5030B0.032Benzene
mg/L 1/13/251/13/250.012 EPA 8260D/5030B0.025Ethylbenzene
mg/L 1/13/251/13/250.008 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 1/13/251/13/250.012 EPA 8260D/5030BNDNaphthalene
mg/L 1/13/251/13/250.012 EPA 8260D/5030BNDToluene
mg/L 1/13/251/13/250.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 1/13/251/13/250.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 1/14/251/13/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: West Blvd Shell CtF WO#: 25A0742
www.ChemtechFord.com
Page 21 of 23Page 21 of 24
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:
1/10/25 16:53 @ 5.4 °C
1/20/2025
West Blvd Shell
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
MS-Low = Estimated low due to Matrix Spike recovery.
Project Name: West Blvd Shell CtF WO#: 25A0742
www.ChemtechFord.com
Page 22 of 23Page 22 of 24
Page 23 of 24
Page 24 of 24
BORING LOG
Well No.
DRILLING METHOD ____________________________________________
DRILLER / COMPANY ___________________________________________ TOTAL DEPTH ____________ WATER DEPTH _______
BORING DIAMETER _________ CASING DIAMETER _________ CASING MATERIAL ____________ SLOT SIZE __________
SURFACE ELEV. ____________ TOP OF CASING ELEV. ___________ LOGGED BY _____________________________________________
EP
(
FT
D
TH

.)
E
SAMPL
S
BLOWS ON
S PLAMER
SAMPLE
R
INTE
VAL
e
(fe
t)DESCRIPTION / SOIL CLASSIFICATION
GRAPHIC LOG
AND
WELL CONSTRUCTION DEPTH
0
05
10
PID
Direct Push
Dillon, Direct Push
David Hansen
15’
0-5
5-10
0
05
10
B-1
DATE: 1/6/2025
LOCATION:
PROJECT: West Blvd Shell
297 W St George Blvd
St George, Utah
293
End of boring at 15 feet. Groundwater sample collected
12.5’
Sand (SW), fine-grained, reddish-brown, damp
Silty clay (CL), moderate plasticity, dark brown, damp
Concrete
306
15 15
10-15 Sand (SW), fine-grained, reddish-brown, saturated 502
99
BORING LOG
Well No.
DRILLING METHOD ____________________________________________
DRILLER / COMPANY ___________________________________________ TOTAL DEPTH ____________ WATER DEPTH _______
BORING DIAMETER _________ CASING DIAMETER _________ CASING MATERIAL ____________ SLOT SIZE __________
SURFACE ELEV. ____________ TOP OF CASING ELEV. ___________ LOGGED BY _____________________________________________
EP
(
FT
D
TH

.)
E
SAMPL
S
BLOWS ON
S PLAMER
SAMPLE
R
INTE
VAL
e
(fe
t)DESCRIPTION / SOIL CLASSIFICATION
GRAPHIC LOG
AND
WELL CONSTRUCTION DEPTH
0
05
10
PID
Direct Push
Dillon, Direct Push
David Hansen
15’
0-5
5-10
0
05
10
B-2
DATE: 1/6/2025
LOCATION:
PROJECT: West Blvd Shell
297 W St George Blvd
St George, Utah
6
End of boring at 15 feet. Groundwater sample collected
11’
Sand (SW), fine-grained, reddish-brown, damp
Silty clay (CL), moderate plasticity, dark brown, damp
Asphalt
13
15 15
10-15
Silt (ML), low plasticity, reddish-brown, damp
23
0
Silty sand (SM), fine-grained, brown, moist
Sand (SW), fine-grained, reddish-brown, damp
Sand (SW), fine-grained, reddish-brown, saturated
BORING LOG
Well No.
DRILLING METHOD ____________________________________________
DRILLER / COMPANY ___________________________________________ TOTAL DEPTH ____________ WATER DEPTH _______
BORING DIAMETER _________ CASING DIAMETER _________ CASING MATERIAL ____________ SLOT SIZE __________
SURFACE ELEV. ____________ TOP OF CASING ELEV. ___________ LOGGED BY _____________________________________________
EP
(
FT
D
TH

.)
E
SAMPL
S
BLOWS ON
S PLAMER
SAMPLE
R
INTE
VAL
e
(fe
t)DESCRIPTION / SOIL CLASSIFICATION
GRAPHIC LOG
AND
WELL CONSTRUCTION DEPTH
0
05
10
PID
Direct Push
Dillon, Direct Push
David Hansen
15’
0-5
5-10
0
05
10
B-3
DATE: 1/6/2025
LOCATION:
PROJECT: West Blvd Shell
297 W St George Blvd
St George, Utah
6
End of boring at 15 feet. Groundwater sample collected
12.5’
Sand (SW), fine-grained, reddish-brown, damp
Silty clay (CL), moderate plasticity, dark brown, damp
Concrete
414
15 15
10-15
Silt (ML), low plasticity, reddish-brown, damp
544
176
Silty sand (SM), fine-grained, brown, moist
Sand (SW), fine-grained, reddish-brown, damp
Sand (SW), fine-grained, reddish-brown, saturated
BORING LOG
Well No.
DRILLING METHOD ____________________________________________
DRILLER / COMPANY ___________________________________________ TOTAL DEPTH ____________ WATER DEPTH _______
BORING DIAMETER _________ CASING DIAMETER _________ CASING MATERIAL ____________ SLOT SIZE __________
SURFACE ELEV. ____________ TOP OF CASING ELEV. ___________ LOGGED BY _____________________________________________
EP
(
FT
D
TH

.)
E
SAMPL
S
BLOWS ON
S PLAMER
SAMPLE
R
INTE
VAL
e
(fe
t)DESCRIPTION / SOIL CLASSIFICATION
GRAPHIC LOG
AND
WELL CONSTRUCTION DEPTH
0
05
10
PID
Direct Push
Dillon, Direct Push
David Hansen
15’
0-5
5-10
0
05
10
B-4
DATE: 1/6/2025
LOCATION:
PROJECT: West Blvd Shell
297 W St George Blvd
St George, Utah
0
End of boring at 15 feet. Groundwater sample collected
12.5’
Sand (SW), fine-grained, reddish-brown, damp
Silty clay (CL), moderate plasticity, dark brown, saturated
Concrete
66
15 15
10-15
109
0
Silty sand (SM), fine-grained, brown, moist
Sand (SW), fine-grained, reddish-brown, damp
Sand (SW), fine-grained, reddish-brown, saturated
Silty sand (SM), fine-grained, brown, moist
Sand (SW), fine-grained, reddish-brown, damp
BORING LOG
Well No.
DRILLING METHOD ____________________________________________
DRILLER / COMPANY ___________________________________________ TOTAL DEPTH ____________ WATER DEPTH _______
BORING DIAMETER _________ CASING DIAMETER _________ CASING MATERIAL ____________ SLOT SIZE __________
SURFACE ELEV. ____________ TOP OF CASING ELEV. ___________ LOGGED BY _____________________________________________
EP
(
FT
D
TH

.)
E
SAMPL
S
BLOWS ON
S PLAMER
SAMPLE
R
INTE
VAL
e
(fe
t)DESCRIPTION / SOIL CLASSIFICATION
GRAPHIC LOG
AND
WELL CONSTRUCTION DEPTH
0
05
10
PID
Direct Push
Dillon, Direct Push
David Hansen
15’
0-5
5-10
0
05
10
B-5
DATE: 1/6/2025
LOCATION:
PROJECT: West Blvd Shell
297 W St George Blvd
St George, Utah
0
End of boring at 15 feet. Groundwater sample collected
12.5’
Pea gravel
Asphalt
15 15
10-15
0
Sand (SW), fine-grained, reddish-brown, saturated
BORING LOG
Well No.
DRILLING METHOD ____________________________________________
DRILLER / COMPANY ___________________________________________ TOTAL DEPTH ____________ WATER DEPTH _______
BORING DIAMETER _________ CASING DIAMETER _________ CASING MATERIAL ____________ SLOT SIZE __________
SURFACE ELEV. ____________ TOP OF CASING ELEV. ___________ LOGGED BY _____________________________________________
EP
(
FT
D
TH

.)
E
SAMPL
S
BLOWS ON
S PLAMER
SAMPLE
R
INTE
VAL
e
(fe
t)DESCRIPTION / SOIL CLASSIFICATION
GRAPHIC LOG
AND
WELL CONSTRUCTION DEPTH
0
05
10
PID
Direct Push
Dillon, Direct Push
David Hansen
15’
0-5
5-10
0
05
10
B-6
DATE: 1/6/2025
LOCATION:
PROJECT: West Blvd Shell
297 W St George Blvd
St George, Utah
16
End of boring at 15 feet. Groundwater sample collected
11.5’
Sand (SW), fine-grained, reddish-brown, damp
Silty clay (CL), moderate plasticity, dark brown, saturated
Concrete
36
15 15
10-15
33
0
Silty sand (SM), fine-grained, brown, moist
Sand (SW), fine-grained, reddish-brown, damp
Sand (SW), fine-grained, reddish-brown, saturated