DERR-2024-012588

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]
July 26, 2024

Jeff Manning
Manning Short Stop
3878 W Highway 13
Corinne, Utah

Re: Phase II Environmental Site Assessment
Manning Short Stop
3878 W Highway 13, Corinne, Utah

Dear Mr. Manning:

As requested, Rockwell Solutions, Inc. has completed a Phase II Environmental Site Assessment at
the above-referenced facility.

SITE DESCRIPTION

The site is an active gas station and convenience store located at 3878 W Highway 13 in Corinne,
Utah. The facility has two 6,000-gallon and one 5,000-gallon above ground storage tank (ASTs) in
a concrete-walled containment on the west end of the property. All three ASTs contain gasoline.
Diesel fuel is not sold at the facility. There are two dispensers under the canopy west of the
convenience store. A previous dispenser was located between the ASTs and the canopy. A site
map is provided as Figure 1.

METHODOLOGY

Seven borings were advanced on July 10, 2024, to evaluate if soil and groundwater had been
impacted at the site. Four borings were advanced around the ASTs and a boring was advanced
adjacent to each of the three current and former dispensers. Figure 1 shows the locations of the
borings.

Borings were advanced to a depth of fifteen feet. 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). Laboratory samples were collected at the interval of the highest
PID reading or from just above the groundwater table. The samples were submitted for laboratory
analysis of MTBE, benzene, toluene, ethylbenzene, xylenes, naphthalene (MBTEXN), and total
petroleum hydrocarbons-gasoline range organics (TPH-GRO) using EPA Method 8260.

Phase II ESA, Manning Short Stop, Corinne, Utah

Rockwell Solutions, Inc., 718 E. Bridger Lane, Elk Ridge, UT 84651 801-361-2930 [e-mail]
2
Groundwater was encountered at approximately eleven feet below grade (bg). A groundwater
sample was collected from each boring using a peristaltic pump. The samples were submitted for
laboratory analysis of MBTEXN and TPH-GRO using EPA Method 8260.

RESULTS

Soil Type
Soil type was evaluated during the subsurface investigation by field analysis of soil samples. The
native soil at the site consists primarily of silty clay to eleven or twelve feet. A silty sand layer is
below the sandy silt layer to at least fifteen feet bg. Boring logs are attached.

Soil Analytical Results
Table 1 lists the analytical results of the soil samples collected during the phase II investigation.
The laboratory analytical reports and chain-of-custody records are attached.

Hydrocarbon concentrations in B-6, at the south dispenser, exceeded Tier 1 levels. Concentrations
exceeded Initial Screening Levels (ISLs) in the samples from B-1 and B-4, adjacent to the ASTs,
and B-5 and B-7, adjacent to the north and former dispensers, respectively. Samples from B-2 and
B-3, on the west and north sides of the ASTs, respectively, were below all cleanup levels. Figure 2
shows the approximate extent of soil contamination based on the current data. The main area of
contamination is under the canopy on the south side.

Groundwater Analytical Results
Table 2 lists the analytical results of the groundwater samples collected during the phase II
investigation. The laboratory analytical reports and chain-of-custody records for groundwater
samples are attached.

All seven groundwater samples exceeded Tier 1 levels. Figure 3 shows the approximate extent of
contamination based on current data. Most of the fueling area, from the canopy to the ASTs is
contaminated. Groundwater flow is likely to the northeast towards the Bear River and groundwater
contamination has likely migrated in that direction.

CONCLUSIONS AND RECOMMENDATIONS

Based on laboratory analytical results and field observations, the site has been impacted by releases
associated with the fuel system.

Rockwell Solutions recommends that monitoring wells be placed to define the extent of
groundwater contamination. At that time, options for corrective action can be evaluated.

Phase II ESA, Manning Short Stop, Corinne, Utah

Rockwell Solutions, Inc., 718 E. Bridger Lane, Elk Ridge, UT 84651 801-361-2930 [e-mail]
3
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 CC0130
Professional Geologist #5844366-2250
NORTH
Approx. scale in feet
00 40
SS-N,GW-N,
USC-1
Figure 1 Site Map
Manning Short Stop
3878 W Highway 13
Corinne UT
Boring Location
B-5
B-4
B-6
B-7
B-3
B-2
B-1
NORTH
Approx. scale in feet
00 40
SS-N,GW-N,
USC-1
Figure 1 Benzene in Soil
Manning Short Stop
3878 W Highway 13
Corinne UTTier 1 Level (0.9 mg/kg)
ISL (0.2 mg/kg)
Boring LocationB-5
0.85 Benzene Concentration (mg/kg)
B-2
0.15
B-7
<0.12
B-3
<0.13
B-6
1.31
B-5
0.85
B-4
0.52
B-1
0.85
NORTH
Approx. scale in feet
00 40
SS-N,GW-N,
USC-1
Figure 3 Benzene in Groundwater
Manning Short Stop
3878 W Highway 13
Corinne UTTier 1 Level (0.3 mg/L)(estimated)
ISL (0.005 mg/L) (estimated)
Boring LocationB-5
0.85 Benzene Concentration (mg/L)
B-2
9.71
B-7
1.37
B-3
1.76
B-6
8.31
B-5
10.9
B-4
1.62
B-1
3.04
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)
0.2 9 5 142 51 0.3 150
0.9 25 23 142 51 0.3 1,500
B-1, 10-11' 10-11 7/10/2024 0.85 3.52 0.83 4.49 <0.30 <0.18 61.9
B-2, 10-11' 10-11 7/10/2024 0.15 <0.33 <0.33 2.55 <0.33 <0.02 11.9
B-3, 10-11' 10-11 7/10/2024 <0.13 <0.33 <0.33 <0.99 <0.33 <0.20 <3.29
B-4, 10-11' 10-11 7/10/2024 0.52 4.43 5.53 29.1 1.46 <0.20 289
B-5, 10-11' 10-11 7/10/2024 0.85 7.99 2.07 13.5 0.45 <0.19 75.5
B-6, 10-11' 10-11 7/10/2024 1.31 <0.31 10.1 6.51 2.2 <0.19 309
B-7, 10-11 10-11 7/10/2024 <0.12 <0.31 2.3 <0.93 2.7 <0.19 152
MBTEXN and TPH-GRO analyzed by EPA Method 8260.
Pink shading = Exceeds Initial Screening Level
Yellow shading = exceeds Tier 1 Level
RBCA Tier 1 Screening Levels
Table 1
Initial Screening Levels
Manning Short Stop
3878 W Highway 13, Corinne, Utah
Soil Sample Results
Page 1 of 2
Sample Date
Benzene
(mg/L)
Toluene
(mg/L)
Ethyl-
benzene
(mg/L)
Xylenes
(mg/L)
Naph-
thalene
(mg/L)
MTBE
(mg/L)
TPH-
GRO
(mg/L)
0.005 1 0.7 10 0.7 0.2 1
0.3 3 4 10 0.7 0.2 10
B-1 7/10/2024 3.04 0.368 1.02 2.59 0.404 <0.008 10.2
B-2 7/10/2024 9.71 13.6 1.67 9.23 0.287 <0.008 39.3
B-3 7/10/2024 1.76 0.118 0.062 1.79 0.242 <0.008 6.42
B-4 7/10/2024 1.62 0.217 1.99 4.14 0.302 <0.008 12.1
B-5 7/10/2024 10.9 1.97 3.06 18 0.368 <0.008 42.3
B-6 7/10/2024 8.31 0.078 1.04 2.5 0.219 <0.008 13.4
B-7 7/10/2024 1.37 0.286 1.2 0.397 0.443 <0.008 5.89
MBTEXN and TPH-GRO analyzed by EPA Method 8260
mg/L = milligrams per liter, which approximates parts per million.
Pink shading = Exceeds Initial Screening Level
Yellow shading = exceeds Tier 1 Level
RBCA Tier 1 Screening
Table 2
Groundwater Analytical Results
Manning Short Stop
3878 W Highway 13, Corinne, Utah
Initial Screening Levels
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: 24G0977
Project: Corinne Short Stop
7/18/2024
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 18
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:
7/11/24 14:16 @ 3.6 °C
7/18/2024
Corinne Short Stop
Sample ID: B-1, 10-11'
Lab ID: 24G0977-01Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 7/10/24 10:15
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%7/12/247/12/240.1 CTF800082.3Total Solids
MBTEXn
mg/kg dry 7/12/247/12/240.12 EPA 8260D/5030B0.85Benzene
mg/kg dry 7/12/247/12/240.30 EPA 8260D/5030B0.83Ethylbenzene
mg/kg dry 7/12/247/12/240.18 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 7/12/247/12/240.30 EPA 8260D/5030BNDNaphthalene
mg/kg dry 7/12/247/12/240.30 EPA 8260D/5030B3.52Toluene
mg/kg dry 7/12/247/12/240.91 EPA 8260D/5030B4.49Xylenes, total
Gasoline Range
mg/kg dry 7/12/247/12/243.04 EPA 8260B/C 5035A/[CALC]61.9Gasoline Range Organics
Project Name: Corinne Short Stop CtF WO#: 24G0977
www.ChemtechFord.com
Page 2 of 17Page 2 of 18
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:
7/11/24 14:16 @ 3.6 °C
7/18/2024
Corinne Short Stop
Sample ID: B-2, 10-11'
Lab ID: 24G0977-02Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 7/10/24 10:55
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%7/12/247/12/240.1 CTF800076.1Total Solids
MBTEXn
mg/kg dry 7/12/247/12/240.13 EPA 8260D/5030B0.15Benzene
mg/kg dry 7/12/247/12/240.33 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 7/12/247/12/240.20 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 7/12/247/12/240.33 EPA 8260D/5030BNDNaphthalene
mg/kg dry 7/12/247/12/240.33 EPA 8260D/5030BNDToluene
mg/kg dry 7/12/247/12/240.99 EPA 8260D/5030B2.55Xylenes, total
Gasoline Range
mg/kg dry 7/12/247/12/243.28 EPA 8260B/C 5035A/[CALC]11.9Gasoline Range Organics
Project Name: Corinne Short Stop CtF WO#: 24G0977
www.ChemtechFord.com
Page 3 of 17Page 3 of 18
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:
7/11/24 14:16 @ 3.6 °C
7/18/2024
Corinne Short Stop
Sample ID: B-3, 10-11'
Lab ID: 24G0977-03Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 7/10/24 11:20
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%7/12/247/12/240.1 CTF800076.0Total Solids
MBTEXn
mg/kg dry 7/12/247/12/240.13 EPA 8260D/5030BNDBenzene
mg/kg dry 7/12/247/12/240.33 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 7/12/247/12/240.20 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 7/12/247/12/240.33 EPA 8260D/5030BNDNaphthalene
mg/kg dry 7/12/247/12/240.33 EPA 8260D/5030BNDToluene
mg/kg dry 7/12/247/12/240.99 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 7/12/247/12/243.29 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Project Name: Corinne Short Stop CtF WO#: 24G0977
www.ChemtechFord.com
Page 4 of 17Page 4 of 18
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:
7/11/24 14:16 @ 3.6 °C
7/18/2024
Corinne Short Stop
Sample ID: B-4, 10-11'
Lab ID: 24G0977-04Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 7/10/24 12:15
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%7/12/247/12/240.1 CTF800076.1Total Solids
MBTEXn
mg/kg dry 7/12/247/12/240.13 EPA 8260D/5030B0.52Benzene
mg/kg dry 7/12/247/12/240.33 EPA 8260D/5030B5.53Ethylbenzene
mg/kg dry 7/12/247/12/240.20 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 7/12/247/12/240.33 EPA 8260D/5030B1.46Naphthalene
mg/kg dry 7/12/247/12/240.33 EPA 8260D/5030B4.43Toluene
mg/kg dry 7/12/247/12/240.99 EPA 8260D/5030B29.1Xylenes, total
Gasoline Range
mg/kg dry 7/12/247/12/243.29 EPA 8260B/C 5035A/[CALC]289Gasoline Range Organics
Project Name: Corinne Short Stop CtF WO#: 24G0977
www.ChemtechFord.com
Page 5 of 17Page 5 of 18
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:
7/11/24 14:16 @ 3.6 °C
7/18/2024
Corinne Short Stop
Sample ID: B-5, 10-11'
Lab ID: 24G0977-05Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 7/10/24 13:00
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%7/12/247/12/240.1 CTF800080.5Total Solids
MBTEXn
mg/kg dry 7/12/247/12/240.12 EPA 8260D/5030B0.85Benzene
mg/kg dry 7/12/247/12/240.31 EPA 8260D/5030B2.07Ethylbenzene
mg/kg dry 7/12/247/12/240.19 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 7/12/247/12/240.31 EPA 8260D/5030B0.45Naphthalene
mg/kg dry 7/12/247/12/240.31 EPA 8260D/5030B7.99Toluene
mg/kg dry 7/12/247/12/240.93 EPA 8260D/5030B13.5Xylenes, total
Gasoline Range
mg/kg dry 7/12/247/12/243.11 EPA 8260B/C 5035A/[CALC]75.5Gasoline Range Organics
Project Name: Corinne Short Stop CtF WO#: 24G0977
www.ChemtechFord.com
Page 6 of 17Page 6 of 18
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:
7/11/24 14:16 @ 3.6 °C
7/18/2024
Corinne Short Stop
Sample ID: B-6, 10-11'
Lab ID: 24G0977-06Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 7/10/24 13:40
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%7/12/247/12/240.1 CTF800081.0Total Solids
MBTEXn
mg/kg dry 7/12/247/12/240.12 EPA 8260D/5030B1.31Benzene
mg/kg dry 7/12/247/12/240.31 EPA 8260D/5030B10.1Ethylbenzene
mg/kg dry 7/12/247/12/240.19 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 7/12/247/12/240.31 EPA 8260D/5030B2.20Naphthalene
mg/kg dry 7/12/247/12/240.31 EPA 8260D/5030BNDToluene
mg/kg dry 7/12/247/12/240.93 EPA 8260D/5030B6.51Xylenes, total
Gasoline Range
mg/kg dry 7/12/247/12/243.09 EPA 8260B/C 5035A/[CALC]309Gasoline Range Organics
Project Name: Corinne Short Stop CtF WO#: 24G0977
www.ChemtechFord.com
Page 7 of 17Page 7 of 18
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:
7/11/24 14:16 @ 3.6 °C
7/18/2024
Corinne Short Stop
Sample ID: B-7, 10-11'
Lab ID: 24G0977-07Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 7/10/24 14:15
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%7/12/247/12/240.1 CTF800080.5Total Solids
MBTEXn
mg/kg dry 7/12/247/12/240.12 EPA 8260D/5030BNDBenzene
mg/kg dry 7/12/247/12/240.31 EPA 8260D/5030B2.30Ethylbenzene
mg/kg dry 7/12/247/12/240.19 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 7/12/247/12/240.31 EPA 8260D/5030B2.70Naphthalene
mg/kg dry 7/12/247/12/240.31 EPA 8260D/5030BNDToluene
mg/kg dry 7/12/247/12/240.93 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 7/12/247/12/243.11 EPA 8260B/C 5035A/[CALC]152Gasoline Range Organics
Project Name: Corinne Short Stop CtF WO#: 24G0977
www.ChemtechFord.com
Page 8 of 17Page 8 of 18
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:
7/11/24 14:16 @ 3.6 °C
7/18/2024
Corinne Short Stop
Sample ID: B-1
Lab ID: 24G0977-08Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 7/10/24 10:45
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 7/11/247/11/240.100 EPA 8260D/5030B3.04Benzene
mg/L 7/11/247/11/240.012 EPA 8260D/5030B1.02Ethylbenzene
mg/L 7/11/247/11/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 7/11/247/11/240.012 EPA 8260D/5030B0.404Naphthalene
mg/L 7/11/247/11/240.012 EPA 8260D/5030B0.368Toluene
mg/L 7/11/247/11/240.750 EPA 8260D/5030B2.59Xylenes, total
Gasoline Range
mg/L 7/11/247/11/240.750 EPA 8260B/C /5030A/[CALC]10.2Gasoline Range Organics
Project Name: Corinne Short Stop CtF WO#: 24G0977
www.ChemtechFord.com
Page 9 of 17Page 9 of 18
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:
7/11/24 14:16 @ 3.6 °C
7/18/2024
Corinne Short Stop
Sample ID: B-2
Lab ID: 24G0977-09Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 7/10/24 11:10
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 7/11/247/11/240.100 EPA 8260D/5030B9.71Benzene
mg/L 7/11/247/11/240.250 EPA 8260D/5030B1.67Ethylbenzene
mg/L 7/11/247/11/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 7/11/247/11/240.012 EPA 8260D/5030B0.287Naphthalene
mg/L 7/11/247/11/240.250 EPA 8260D/5030B13.6Toluene
mg/L 7/11/247/11/240.750 EPA 8260D/5030B9.23Xylenes, total
Gasoline Range
mg/L 7/11/247/11/240.750 EPA 8260B/C /5030A/[CALC]39.3Gasoline Range Organics
Project Name: Corinne Short Stop CtF WO#: 24G0977
www.ChemtechFord.com
Page 10 of 17Page 10 of 18
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:
7/11/24 14:16 @ 3.6 °C
7/18/2024
Corinne Short Stop
Sample ID: B-3
Lab ID: 24G0977-10Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 7/10/24 12:05
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 7/11/247/11/240.100 EPA 8260D/5030B1.76Benzene
mg/L 7/11/247/11/240.012 EPA 8260D/5030B0.062Ethylbenzene
mg/L 7/11/247/11/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 7/11/247/11/240.012 EPA 8260D/5030B0.242Naphthalene
mg/L 7/11/247/11/240.012 EPA 8260D/5030B0.118Toluene
mg/L 7/11/247/11/240.038 EPA 8260D/5030B1.79Xylenes, total
Gasoline Range
mg/L 7/11/247/11/240.125 EPA 8260B/C /5030A/[CALC]6.42Gasoline Range Organics
Project Name: Corinne Short Stop CtF WO#: 24G0977
www.ChemtechFord.com
Page 11 of 17Page 11 of 18
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:
7/11/24 14:16 @ 3.6 °C
7/18/2024
Corinne Short Stop
Sample ID: B-4
Lab ID: 24G0977-11Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 7/10/24 12:50
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 7/11/247/11/240.100 EPA 8260D/5030B1.62Benzene
mg/L 7/11/247/11/240.250 EPA 8260D/5030B1.99Ethylbenzene
mg/L 7/11/247/11/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 7/11/247/11/240.012 EPA 8260D/5030B0.302Naphthalene
mg/L 7/11/247/11/240.012 EPA 8260D/5030B0.217Toluene
mg/L 7/11/247/11/240.750 EPA 8260D/5030B4.14Xylenes, total
Gasoline Range
mg/L 7/11/247/11/240.750 EPA 8260B/C /5030A/[CALC]12.1Gasoline Range Organics
Project Name: Corinne Short Stop CtF WO#: 24G0977
www.ChemtechFord.com
Page 12 of 17Page 12 of 18
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:
7/11/24 14:16 @ 3.6 °C
7/18/2024
Corinne Short Stop
Sample ID: B-5
Lab ID: 24G0977-12Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 7/10/24 13:30
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 7/11/247/11/240.100 EPA 8260D/5030B10.9Benzene
mg/L 7/11/247/11/240.250 EPA 8260D/5030B3.06Ethylbenzene
mg/L 7/11/247/11/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 7/11/247/11/240.012 EPA 8260D/5030B0.368Naphthalene
mg/L 7/11/247/11/240.250 EPA 8260D/5030B1.97Toluene
mg/L 7/11/247/11/240.750 EPA 8260D/5030B18.0Xylenes, total
Gasoline Range
mg/L 7/11/247/11/240.750 EPA 8260B/C /5030A/[CALC]42.3Gasoline Range Organics
Project Name: Corinne Short Stop CtF WO#: 24G0977
www.ChemtechFord.com
Page 13 of 17Page 13 of 18
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:
7/11/24 14:16 @ 3.6 °C
7/18/2024
Corinne Short Stop
Sample ID: B-6
Lab ID: 24G0977-13Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 7/10/24 14:05
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 7/11/247/11/240.100 EPA 8260D/5030B8.31Benzene
mg/L 7/11/247/11/240.012 EPA 8260D/5030B1.04Ethylbenzene
mg/L 7/11/247/11/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 7/11/247/11/240.012 EPA 8260D/5030B0.219Naphthalene
mg/L 7/11/247/11/240.012 EPA 8260D/5030B0.078Toluene
mg/L 7/11/247/11/240.750 EPA 8260D/5030B2.50Xylenes, total
Gasoline Range
mg/L 7/11/247/11/240.750 EPA 8260B/C /5030A/[CALC]13.4Gasoline Range Organics
Project Name: Corinne Short Stop CtF WO#: 24G0977
www.ChemtechFord.com
Page 14 of 17Page 14 of 18
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:
7/11/24 14:16 @ 3.6 °C
7/18/2024
Corinne Short Stop
Sample ID: B-7
Lab ID: 24G0977-14Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 7/10/24 14:30
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 7/11/247/11/240.100 EPA 8260D/5030B1.37Benzene
mg/L 7/11/247/11/240.012 EPA 8260D/5030B1.20Ethylbenzene
mg/L 7/11/247/11/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 7/11/247/11/240.012 EPA 8260D/5030B0.443Naphthalene
mg/L 7/11/247/11/240.012 EPA 8260D/5030B0.286Toluene
mg/L 7/11/247/11/240.038 EPA 8260D/5030B0.397Xylenes, total
Gasoline Range
mg/L 7/11/247/11/240.125 EPA 8260B/C /5030A/[CALC]5.89Gasoline Range Organics
Project Name: Corinne Short Stop CtF WO#: 24G0977
www.ChemtechFord.com
Page 15 of 17Page 15 of 18
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:
7/11/24 14:16 @ 3.6 °C
7/18/2024
Corinne Short Stop
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: Corinne Short Stop CtF WO#: 24G0977
www.ChemtechFord.com
Page 16 of 17Page 16 of 18
Page 17 of 18
Page 18 of 18
BORING LOG
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
00
05
15
PID
Direct Push
Jaret, Direct Push Services
3”
End of Boring at 15 feet. Collected water sample
NA
11’
David Hansen
15’
0-5
10-15
00
05
10
B-1
DATE: 7/10/24
LOCATION:
PROJECT:
3878 W Highway 13
Corinne, Utah
593
Sand and gravel fill
Manning Short Stop
Silty Clay (CL), moderate plasticity, brown, damp
Boring:
43
Silty Sand (SM), fine-grained, gray, saturated
Asphalt
10
5-10
520
49 15
Color grades to gray
BORING LOG
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
00
05
15
PID
Direct Push
Jaret, Direct Push Services
3”
End of Boring at 15 feet. Collected water sample
NA
11’
David Hansen
15’
0-5
10-15
00
05
10
B-2
DATE: 7/10/24
LOCATION:
PROJECT:
3878 W Highway 13
Corinne, Utah
562
Sand and gravel fill
Manning Short Stop
Silty Clay (CL), moderate plasticity, brown, damp
Boring:
394
Silty Sand (SM), fine-grained, gray, saturated
10
5-10
499
129 15
Color grades to gray
BORING LOG
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
00
05
15
PID
Direct Push
Jaret, Direct Push Services
3”
End of Boring at 15 feet. Collected water sample
NA
11’
David Hansen
15’
0-5
10-15
00
05
10
B-3
DATE: 7/10/24
LOCATION:
PROJECT:
3878 W Highway 13
Corinne, Utah
Sand and gravel fill
Manning Short Stop
Silty Clay (CL), moderate plasticity, brown, damp
Boring:
Silty Sand (SM), fine-grained, brown, saturated
10
5-10
0
15
0
0
BORING LOG
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
00
05
15
PID
Direct Push
Jaret, Direct Push Services
3”
End of Boring at 15 feet. Collected water sample
NA
11’
David Hansen
15’
0-5
10-15
00
05
10
B-4
DATE: 7/10/24
LOCATION:
PROJECT:
3878 W Highway 13
Corinne, Utah
447
Sand and gravel fill
Manning Short Stop
Silty Clay (CL), moderate plasticity, brown, damp
Boring:
195
Silty Sand (SM), fine-grained, gray, saturated
10
5-10
149 15
BORING LOG
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
00
05
15
PID
Direct Push
Jaret, Direct Push Services
3”
End of Boring at 15 feet. Collected water sample
NA
11’
David Hansen
15’
0-5
10-15
00
05
10
B-5
DATE: 7/10/24
LOCATION:
PROJECT:
3878 W Highway 13
Corinne, Utah
702
Sand and gravel fill
Manning Short Stop
Silty Clay (CL), moderate plasticity, gray, damp
Boring:
30
Silty Sand (SM), fine-grained, gray, saturated
Concrete
10
5-10
115 15
BORING LOG
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
00
05
15
PID
Direct Push
Jaret, Direct Push Services
3”
End of Boring at 15 feet. Collected water sample
NA
11’
David Hansen
15’
0-5
10-15
00
05
10
B-6
DATE: 7/10/24
LOCATION:
PROJECT:
3878 W Highway 13
Corinne, Utah
361
Sand and gravel fill
Manning Short Stop
Silty Clay (CL), moderate plasticity, gray, damp
Boring:
54
Silty Sand (SM), fine-grained, gray, saturated
Concrete
10
5-10
102 15
BORING LOG
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
00
05
15
PID
Direct Push
Jaret, Direct Push Services
3”
End of Boring at 15 feet. Collected water sample
NA
11’
David Hansen
15’
0-5
10-15
00
05
10
B-7
DATE: 7/10/24
LOCATION:
PROJECT:
3878 W Highway 13
Corinne, Utah
424
Sand and gravel fill
Manning Short Stop
Silty Clay (CL), moderate plasticity, brown, damp
Boring:
417
Silty Sand (SM), fine-grained, gray, saturated
Asphalt
10
5-10
46 15