DERR-2024-005362

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ATLAS

February 19, 2024

Mr. Hong Lei Tao
Utah Department of Environmental Quality
Division of Environmental Response and Remediation
195 North 1950 West
Salt Lake City, Utah 84114-4840

SUBJECT: Groundwater Monitoring Report
Former Wiles Oil
8370 South State Street
Midvale, Utah
Facility ID #4001272
UST Release Site LDA
Work Assignment LDA-14
UDEQ Technical Services Contract #216364

Dear Mr. Tao:

Please find attached the Groundwater Monitoring Report for the above referenced site.

INTRODUCTION

On November 29 and 30, 2023, Atlas Technical Consultant (Atlas) conducted a groundwater
monitoring event at the former Wiles Oil property located at 8370 South State Street, Midvale,
Utah (see Figure 1, Site Map). The work was performed on behalf of the Utah Department
Environmental Quality, Division of Environmental Response and Remediation (DERR) under
Work Assignment LDA-14.

GROUNDWATER MONITORING FIELD PROCEDURES

The field and laboratory procedures utilized to collect the information presented in this report are
discussed in the following sections.

Field Parameters, Well Purging Procedures, and Chemical Analysis
The approved work plan included sampling monitoring wells MW-1, MW-2, MW -3, MW -4, MW-
5, MW -7, MW -8, MW-9, MW-11, MW-12, MW-13, MW -14, MW -15, and MW-16. However, MW-
11 contained free product (0.02 ft.), and MW -2, MW-4, MW-9 and MW -12 were dry; therefore,
these wells were not sampled.

Prior to well purging, groundwater depths were measured in each well using an electronic water
level/free product interface probe. The water level/free product interface probe was
decontaminated between each well with an Alconox detergent wash and tap water rinse.
Following field parameter measurements, the monitoring wells to be sampled were purged a
minimum of three well volumes or until dry using new, factory-sealed, disposable PVC bailers.
358 South 700 East, B518
Salt Lake City, Utah 84102
Office: 801.935.4917
www.oneatlas.com

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ATLAS

Following the purging process, the wells were allowed to recharge to within 95 percent of the
pre-purge water level and then sampled. The samples were transferred to appropriate
containers and immediately placed on ice in an insulated cooler and then transported under
chain-of-custody documentation to a Utah-certified laboratory for analysis. The groundwater
samples were analyzed for methyl t-butyl ether, benzene, toluene, ethyl benzene, total xylenes,
naphthalene (MBTEXN) using EPA Method 8260; and total petroleum hydrocarbons as gasoline
(TPH-GRO), and TPH as diesel (TPH-DRO) using EPA Method 8015. A duplicate sample was
also collected from MW-5.

Field Parameter and Chemical Analysis Results
Field parameter measurements are presented in Table 1. Groundwater elevation data collected
during the November 2023 event indicated that depth to groundwater ranged from 60.87 feet
below grade in MW-1 to 103.44 feet below grade in MW-13. Given the wide variance in depth to
groundwater elevation an accurate groundwater gradient map could not be generated using all
of the well locations.

Information obtained from previous reports prepared for the site indicate that monitoring wells
MW -1 though MW-7, MW-11, MW-12, MW-14, and MW-16 all terminate above approximately
72 feet below grade, monitoring wells MW-8 and MW-9 terminate near 84 feet below grade, and
monitoring wells MW-13 and MW-15 terminate near 110 feet below grade. In order to prepare a
groundwater gradient map (Figure 2) for the November 2023 event only wells screened in the
upper portion of the surficial aquifer were utilized. The data indicate that groundwater gradient
appears to be toward the north/northeast, with a gradient of approximately 0.012 ft/ft measured
between MW-1 and MW-14.

The November 2023 laboratory results for the samples collected from the monitoring wells
indicated no detection of MBTEXN or TPH-GRO above their respective laboratory reporting
limits. TPH-DRO was detected in monitoring well MW-3 at a concentration of 2.8 mg/L which is
below the Tier I Screening Level of 10 mg/L. TPH-DRO was not detected in any of the
remaining wells sampled. The groundwater laboratory results are summarized in Table 1 and a
copy of the laboratory report and chain of custody are included in Appendix A.

CONCLUSIONS AND RECOMMENDATIONS

During the monitoring event free product was measured in MW-11 at a thickness of 0.02 ft. The
laboratory data collected during the November 2023 groundwater monitoring event indicate
TPH-DRO was detected in MW -3. No other petroleum constituents were detected above their
respective laboratory reporting limits in the monitoring wells sampled.

Review of the data indicate that free product is still present beneath the site and that benzene
and MTBE impacts were consistently measured off-site in MW-17 above ISLs before the well
was destroyed during road construction activities along State Street. Before this site can be
evaluated for closure, Atlas recommends that MW-17 be replaced to evaluate current off-site
conditions and upon replace of the well, a semi-annual groundwater monitoring program be
implemented for at least one year.

Our services consist of professional opinions and recommendations made in accordance with
generally accepted geotechnical and environmental engineering principles and practices. This

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ATLAS

warranty is in lieu of all other warranties either expressed or implied. Should you have any
questions, please do not hesitate to call us at [phone].
Sincerely,

Atlas Technical Consultants

Olaf Questereit Jim Coletta, P.G.
Senior Technician Branch Manager
Utah Certified UST Consultant

FIGURES

FIGURE #:
1
GASGASGASGASGASGASGASGAS
GA
S
GA
S
GA
S
GA
S
GA
S
GA
S
GA
S
GAS
FIGURE #:
2
GASGASGASGASGASGASGASGAS
GA
S
GA
S
GA
S
GA
S
GA
S
GA
S
GA
S
GAS

TABLES

MtBE Benzene Toluene Ethyl
Benzene
Total
Xylene
Naph-
thalene
TPH-
GRO
TPH-
DRO
0.2 0.005 1 0.7 10 0.7 1 1
0.2 0.3 3 4 10 0.7 10 10
MW-1 1/18/02 57.53 4,297.22 ND ND <0.002 0.0016 0.01 <0.002 0.012 0.027 <0.01 <0.01
4/24/03 57.41 4,297.34 ND ND <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.01 <0.01
9/13/04 59.47 4,295.28 ND ND <0.002 <0.002 <0.002 <0.002 <0.006 <0.002 <0.5 <0.5
6/2/06 57.71 4,297.04 ND ND <0.002 <0.002 <0.002 <0.002 <0.013 <0.002 <0.5 <0.5
10/25/07 57.54 4,297.21 ND ND <0.002 0.035 <0.002 <0.002 0.0080 <0.002 0.066 <0.5
8/19/09 57.04 4,297.71 ND ND <0.001 <0.001 <0.001 <0.001 <0.003 <0.001 <0.05 <1
5/28/10 57.52 4,297.23 ND ND
6/10/11 57.73 4,297.02 ND ND <0.001 <0.001 0.002 <0.001 <0.003 0.012 <0.05 1.2
1/9/12 56.12 4,298.63 ND ND
4/5/12 57.21 4,297.54 ND ND
5/14/12 57.60 4,297.15 ND ND
9/27/12 56.82 4,297.93 ND ND
10/11/12 56.81 4,297.94 ND ND <0.001 <0.001 <0.001 <0.001 <0.003 <0.002 <0.05 NA
6/6/13 58.57 4,296.18 ND ND <0.001 <0.001 <0.001 <0.001 <0.003 <0.002 <0.05 NA
11/5/13 56.08 4,298.67 ND ND <0.001 0.002 <0.001 <0.001 <0.003 <0.002 <0.05 NA
9/10/15 57.54 4,297.21 ND ND <0.005 <0.002 <0.005 <0.005 <0.005 <0.005 <0.050 <1.0
8/18/16 59.17 4,295.58 ND ND <0.005 <0.002 <0.005 <0.005 <0.005 <0.005 <0.050 NA
6/12/17 60.02 4,294.73 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 NA
6/26/18 59.80 4,294.95 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 NA
5/29/19 58.78 4,295.97 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
3/1/22 60.68 4,294.07 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
3/1/22*----ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
11/30/23 60.87 4,293.88 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
MW-2 1/18/02 61.03 4,295.12 ND ND 0.0035 1.6 5.2 0.87 4.1 0.18 13 <0.5
4/24/03 65.97 4,290.18 62.29 3.68
9/13/04 58.40 4,297.75 ND ND
6/8/11 NM NM NM NM
1/9/12 NM NM NM NM
4/11/12
9/27/12
10/11/12
6/6/13
11/4/13
9/10/15
8/18/16
6/12/17
6/26/18
5/29/19
3/1/22
11/29/23
MW-3 1/18/02 60.26 4,295.47 ND ND 6.4 3.5 10 13.0 8.0 0.22 31 5.6
4/24/03 64.26 4,291.47 61.16 3.10
9/13/04 NM NM NR NR
6/2/06 59.86 4,295.87 59.72 0.14
10/25/07 59.00 4,296.73 58.30 0.70
8/19/09 58.11 4,297.62 ND ND 0.771 <0.005 0.165 3.95 35.1 0.677 46.5 86.9
5/28/10 58.45 4,297.28 ND ND
6/10/11 58.51 4,297.22 ND ND 0.091 <0.001 0.034 2.07 18.0 1.41 18.3 30.9
1/9/12 57.88 4,297.85 ND ND
4/5/12 59.11 4,296.62 ND ND
Well dry at 55.13 feet
Well dry at 55.00 feet
Well dry at 55.00 feet
Well dry at 55.00 feet
Not Sampled - Free Product
Not Sampled - Free Product
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Not Sampled - Free Product
Not Sampled - Free Product
Well dry at 55.00 feet
Initial Screening Levels
RBCA Tier 1 Screening Levels
Well dry at 55.00 feet - Bentonite residue residing in well bottom
Not Sampled - Free Product
Not Sampled - Well Obstructed
Not Sampled - Well Obstructed
Not Sampled - Well Obstructed
Not Sampled - Gauging Event Only
Not Sampled
Well dry at 55.00 feet - Bentonite residue residing in well bottom
Not Sampled
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Well completely filled with water - 55.85 feet total well depth
Well dry at 54.96 feet - Bentonite residue residing in well bottom
Table 1
Groundwater Analytical Results (mg/L)
Former Wiles Oil
8370 South State Street
Midvale, Utah
Well ID Date
Depth to
Water
(feet)
Ground-
water
Elevation
(feet)
Depth to
Product
(feet)
Product
Thickness
(feet)
Groundwater Concentrations (mg/L)
Well dry at 55.00 feet - Bentonite residue residing in well bottom
Well dry at 55.13 feet
Well dry at 55.00 feet
Page 1 of 6
MtBE Benzene Toluene Ethyl
Benzene
Total
Xylene
Naph-
thalene
TPH-
GRO
TPH-
DRO
0.2 0.005 1 0.7 10 0.7 1 1
0.2 0.3 3 4 10 0.7 10 10
Initial Screening Levels
RBCA Tier 1 Screening Levels
Table 1
Groundwater Analytical Results (mg/L)
Former Wiles Oil
8370 South State Street
Midvale, Utah
Well ID Date
Depth to
Water
(feet)
Ground-
water
Elevation
(feet)
Depth to
Product
(feet)
Product
Thickness
(feet)
Groundwater Concentrations (mg/L)
MW-3 5/14/12 59.80 4,295.93 ND ND
Cont.9/27/12
10/11/12 58.37 4,297.36 ND ND <0.05 <0.05 <0.05 1.54 15.5 0.757 47.1 NA
6/6/13 59.73 4,296.00 ND ND
11/4/13 57.68 4,298.05 ND ND
8/19/16 59.80 4,295.93 ND ND <0.005 <0.002 <0.005 0.238 0.028 0.081 10.0 NA
6/12/17 61.38 4,294.35 61.36 0.02
6/26/18 59.06 4,296.67 ND ND <0.005 <0.005 <0.012 0.032 0.019 <0.012 2.49 NA
5/30/19 60.57 4,295.16 ND ND <0.005 <0.005 <0.012 0.091 <0.012 <0.012 0.523 1.8
3/1/22
11/30/23 62.27 4,293.46 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 2.8
MW-4 4/12/02 NR NR NR NR 0.42 2.3 0.91 0.22 0.58 0.065 5 <0.5
4/24/03 67.20 4,287.68 67.12 0.08 15 19 29 4.4 31 1.0 140 64
10/25/07 61.70 4,293.18 ND ND 0.059 0.023 0.0070 0.0068 0.016 <0.002 0.064 <0.5
8/20/09 62.32 4,292.56 ND ND 0.995 0.084 0.899 0.209 0.855 <0.005 2.34 <1
6/8/11 62.51 4,292.37 ND ND
1/9/12 62.10 4,292.78 ND ND
4/5/12 62.30 4,292.58 ND ND
5/14/12 62.62 4,292.26 ND ND
9/27/12 62.35 4,292.53 ND ND
10/11/12 62.24 4,292.64 ND ND
6/6/13 63.81 4,291.07 ND ND
11/5/13 62.06 4,292.82 ND ND <0.02 <0.02 0.041 0.976 1.09 0.080 3.52 NA
9/10/15
8/18/16
6/12/17
6/26/18
5/29/19
3/1/22
11/29/23
MW-5 4/24/03 62.37 4,292.83 ND ND 66 21 16 2.2 9.5 0.31 53 1.6
9/13/04 62.38 4,292.82 ND ND 7.809 3.556 0.602 0.424 1.93 0.15 14.64 2.19
6/2/06 62.10 4,293.10 ND ND
10/25/07 61.89 4,293.31 ND ND 0.075 0.0014 <0.002 <0.002 <0.002 <0.002 <0.02 <0.5
8/19/09 61.97 4,293.23 ND ND 0.011 <0.001 <0.001 <0.001 0.008 0.004 0.184 <1
5/28/10 63.52 4,291.68 ND ND
6/10/11 62.47 4,292.73 ND ND 0.012 <0.001 <0.001 <0.001 <0.003 0.020 0.059 <1
1/9/12 61.56 4,293.64 ND ND
4/5/12 61.95 4,293.25 ND ND
5/14/12 62.19 4,293.01 ND ND
9/27/12 61.97 4,293.23 ND ND
10/12/12 61.81 4,293.39 ND ND 0.006 <0.001 <0.001 0.001 <0.003 0.003 0.168 NA
6/6/13 62.57 4,292.63 ND ND 0.012 0.002 <0.001 0.024 <0.003 0.004 0.093 NA
11/5/13 61.48 4,293.72 ND ND 0.215 <0.001 <0.001 0.002 <0.003 <0.002 0.139 NA
9/11/15 62.08 4,293.12 ND ND <0.005 <0.002 <0.005 <0.005 <0.005 <0.005 <0.050 <1.0
8/19/16 62.80 4,292.40 ND ND 0.132 0.003 <0.005 <0.005 <0.005 <0.005 0.083 NA
6/12/17 62.84 4,292.36 ND ND
6/26/18 62.59 4,292.61 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 NA
5/29/19 62.60 4,292.60 ND ND 0.022 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
3/1/22 63.41 4,291.79 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
Well dry at 60.05 feet
Well dry at 60.05 feet
Not Sampled - Not Included in Approved Scope of Work
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Well dry at 60.23 feet
Well dry at 60.05 feet
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Unable to access well. Well cover fused in place.
Well dry at 60.05 feet
Not Sampled - Gauging Event Only
Not Sampled - Free Product
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Obstruction @ approximately 20 feet
Not Sampled - Gauging Event Only
Well dry at 60.05 feet
Not Sampled
Not Sampled
Not Sampled
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Well dry at 60.23 feet
Page 2 of 6
MtBE Benzene Toluene Ethyl
Benzene
Total
Xylene
Naph-
thalene
TPH-
GRO
TPH-
DRO
0.2 0.005 1 0.7 10 0.7 1 1
0.2 0.3 3 4 10 0.7 10 10
Initial Screening Levels
RBCA Tier 1 Screening Levels
Table 1
Groundwater Analytical Results (mg/L)
Former Wiles Oil
8370 South State Street
Midvale, Utah
Well ID Date
Depth to
Water
(feet)
Ground-
water
Elevation
(feet)
Depth to
Product
(feet)
Product
Thickness
(feet)
Groundwater Concentrations (mg/L)
MW-5 11/30/23 63.09 4,292.11 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
Cont.11/30/23*----ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
MW-6 6/10/11
MW-7 4/24/03 59.76 4,295.42 ND ND 0.81 0.09 0.0063 0.0029 0.011 <0.002 0.14 <0.5
9/13/04 60.50 4,294.68 ND ND 0.01 <0.002 <0.002 <0.002 <0.006 <0.002 <0.5 4.4
6/2/06 59.26 4,295.92 ND ND 0.071 <0.002 <0.002 <0.002 <0.006 <0.002 <0.5 <0.5
10/25/07 58.69 4,296.49 ND ND 0.062 <0.001 <0.002 <0.002 <0.002 <0.002 <0.02 <0.5
8/19/09 57.90 4,297.28 ND ND 0.042 <0.001 <0.001 <0.001 <0.003 <0.001 <0.05 <1
5/28/10 59.25 4,295.93 ND ND
6/10/11 58.95 4,296.23 ND ND 0.004 <0.001 <0.001 <0.001 <0.003 0.007 <0.05 <1
1/9/12 57.26 4,297.92 ND ND
4/5/12 58.54 4,296.64 ND ND
5/14/12 59.02 4,296.16 ND ND
9/27/12 57.94 4,297.24 ND ND
10/11/12 57.95 4,297.23 ND ND 0.006 <0.001 <0.001 <0.001 <0.003 0.003 <0.05 NA
6/6/13 59.94 4,295.24 ND ND <0.001 <0.001 <0.001 <0.001 <0.003 <0.002 <0.05 NA
11/5/13 57.38 4,297.80 ND ND <0.001 <0.001 <0.001 <0.001 <0.003 <0.002 <0.05 NA
9/10/15 58.48 4,296.70 ND ND 0.009 <0.002 <0.005 <0.005 0.025 <0.005 0.079 <1.0
8/18/16 60.02 4,295.16 ND ND <0.005 0.002 <0.005 <0.005 <0.005 <0.005 <0.050 NA
6/12/17 62.29 4,292.89 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 NA
6/26/18 60.54 4,294.64 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 NA
5/29/19 60.87 4,294.31 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
3/1/22 62.79 4,292.39 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
11/30/23 62.83 4,292.35 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
MW-8 9/13/04 65.65 4,289.57 ND ND <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.5 <0.5
6/2/06 NR NR NR NR 0.0080 <0.009 <0.009 <0.004 <0.013 0.006 12.51 <0.5
10/25/07 61.55 4,293.67 ND ND <0.002 <0.001 <0.002 <0.002 <0.002 <0.002 <0.02 <0.5
8/20/09 61.55 4,293.67 ND ND <0.001 <0.001 <0.001 <0.001 <0.003 <0.001 <0.05 <1
5/28/10 83.61 4,271.61 ND ND
6/10/11 83.72 4,271.50 ND ND <0.001 <0.001 <0.001 <0.001 <0.003 0.004 <0.05 <1
1/9/12 83.91 4,271.31 ND ND
4/5/12 83.59 4,271.63 ND ND
5/14/12 83.82 4,271.40 ND ND
9/27/12 83.88 4,271.34 ND ND
10/11/12 83.40 4,271.82 ND ND <0.001 <0.001 <0.001 <0.001 <0.003 0.002 <0.05 NA
6/6/13 83.99 4,271.23 ND ND
11/5/13 83.68 4,271.54 ND ND <0.001 <0.001 <0.001 <0.001 <0.003 <0.002 <0.05 NA
9/10/15 83.92 4,271.30 ND ND
8/18/16 83.99 4,271.23 ND ND
6/12/17 83.69 4,271.53 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 NA
6/26/18 83.85 4,271.37 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 NA
5/29/19 83.64 4,271.58 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
3/1/22 84.09 4,271.13 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
11/30/23 83.72 4,271.50 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
MW-9 6/10/11 Dry ND ND ND
1/9/12 Dry ND ND ND
4/5/12 Dry ND ND MD
5/14/12 83.88 4,271.49 ND ND
9/27/12 Dry ND ND ND
10/11/12 83.88 4,271.49 ND ND
Could not locate well -- no well located in area indicated by historical data, assumed destroyed
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Not Sampled - Insufficient Water
Not Sampled
Not Sampled
Not Sampled
Not Sampled
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Not Sampled - Dry
Not Sampled - Dry
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Page 3 of 6
MtBE Benzene Toluene Ethyl
Benzene
Total
Xylene
Naph-
thalene
TPH-
GRO
TPH-
DRO
0.2 0.005 1 0.7 10 0.7 1 1
0.2 0.3 3 4 10 0.7 10 10
Initial Screening Levels
RBCA Tier 1 Screening Levels
Table 1
Groundwater Analytical Results (mg/L)
Former Wiles Oil
8370 South State Street
Midvale, Utah
Well ID Date
Depth to
Water
(feet)
Ground-
water
Elevation
(feet)
Depth to
Product
(feet)
Product
Thickness
(feet)
Groundwater Concentrations (mg/L)
MW-9 6/6/13 83.85 4,271.52 ND ND
Cont.11/4/13 83.95 4,271.42 ND ND
9/10/15 83.94 4,271.43 ND ND
8/18/16 83.95 4,271.42 ND ND
6/12/17 83.97 4,271.40 ND ND
6/26/18 Dry ND ND ND
5/29/19 Dry ND ND ND
3/1/22 83.90 4,271.47 ND ND
11/29/23 Dry ND ND ND
MW-10 6/10/11
MW-11 6/2/06 68.17 4,287.91 59.24 8.93
10/25/07 71.35 4,284.73 59.04 12.31
8/20/09 NR NR NR 12.95
5/28/10 68.19 4,287.89 59.37 8.82
6/10/11 68.38 4,287.70 59.66 8.72
1/9/12 61.34 4,294.74 58.43 2.91
4/5/12 62.52 4,293.56 59.48 3.04
5/14/12 64.65 4,291.43 59.59 5.06
9/27/12 NM NM 58.78 --
10/11/12 69.11 4,286.97 58.68 10.43
6/6/13 63.15 4,292.93 60.98 2.17
11/5/13 64.35 4,291.73 58.24 6.11
9/10/15 64.09 4,291.99 59.54 4.55
8/18/16 62.50 4,293.58 61.53 0.97
6/12/17 62.42 4,293.66 62.02 0.40
6/26/18 61.29 4,294.79 61.27 0.02
5/29/19 61.02 4,295.06 61.00 0.02
3/1/22 62.45 4,293.66 62.41 0.04
11/29/23 62.70 4,292.12 62.68 0.02
MW-12 6/2/06 63.85 4,290.95 ND ND 4.21 16.2 24.6 2.72 14.8 0.400 6.61 65.20
10/25/07 62.74 4,292.06 ND ND 0.31 5.6 10 2.5 14 0.3 40 6.90
8/19/09 63.19 4,291.61 ND ND 0.239 1.83 6.23 1.71 9.8 0.376 22.8 2.1
5/28/10 63.24 4,291.56 ND ND
6/9/11 63.35 4,291.45 ND ND 0.044 0.211 4.42 1.75 6.38 0.509 25.8 3.8
1/9/12 62.95 4,291.85 ND ND
4/5/12 63.15 4,291.65 ND ND
5/14/12 63.38 4,291.42 ND ND
9/27/12 63.19 4,291.61 ND ND
10/12/12 63.11 4,291.69 ND ND 0.265 0.052 1.07 1.84 9.74 0.394 24.3 NA
6/6/13 63.73 4,291.07 ND ND 0.073 0.003 0.087 1.40 1.78 0.200 6.5 NA
11/4/13 62.71 4,292.09 ND ND <0.02 <0.02 0.175 0.766 2.63 0.150 9.43 NA
9/10/15 63.13 4,291.67 ND ND <0.005 <0.002 0.005 0.559 0.115 0.046 1.53 1.4
8/19/16 63.81 4,290.99 ND ND <0.005 <0.002 <0.005 0.018 <0.005 <0.005 0.163 NA
6/12/17 63.96 4,290.84 ND ND
6/26/18 63.78 4,291.02 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 NA
5/29/19 63.25 4,291.55 ND ND
3/1/22
11/29/23
MW-13 6/2/06 96.82 4,258.75 ND ND 0.214 <0.002 <0.002 <0.002 <0.006 <0.002 <0.5 <0.5
10/25/07 101.23 4,254.34 ND ND 0.021 <0.001 <0.002 <0.002 <0.002 <0.002 <0.02 <0.5
Not Sampled - Free Product
Not Sampled - Dry
Not Sampled - Free Product
Not Sampled - Gauging Event Only
Not Sampled - Dry
Could not locate well -- March 2010 correspondence with UDEQ indicates well was destroyed
Not Sampled - Free Product
Not Sampled - Free Product
Not Sampled - Free Product
Not Sampled - Free Product
Not Sampled - Free Product
Not Sampled - Gauging Event Only
Not Sampled - Insufficient Water
Not Sampled - Dry
Not enough water to collect sample
Not Sampled - Free Product
Not Sampled - Free Product
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only (Interface Probe Malfunctioned)
Not Sampled - Gauging Event Only
Not Sampled - Insufficient Water
Not Sampled - Dry
Not Sampled - Free Product
Not Sampled - Free Product
Not Sampled - Gauging Event Only
Not Sampled - Free Product
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Not Sampled - Free Product
Not Sampled - Well Obstruction
Well dry at 63.91 feet
Not Sampled
Not Sampled
Not Sampled - Free Product
Not Sampled - Free Product
Not Sampled
Not Sampled - Free Product
Page 4 of 6
MtBE Benzene Toluene Ethyl
Benzene
Total
Xylene
Naph-
thalene
TPH-
GRO
TPH-
DRO
0.2 0.005 1 0.7 10 0.7 1 1
0.2 0.3 3 4 10 0.7 10 10
Initial Screening Levels
RBCA Tier 1 Screening Levels
Table 1
Groundwater Analytical Results (mg/L)
Former Wiles Oil
8370 South State Street
Midvale, Utah
Well ID Date
Depth to
Water
(feet)
Ground-
water
Elevation
(feet)
Depth to
Product
(feet)
Product
Thickness
(feet)
Groundwater Concentrations (mg/L)
MW-13 8/19/09 99.78 4,255.79 ND ND 0.019 <0.001 <0.001 <0.001 <0.003 <0.001 <0.05 <1
Cont.5/28/10 98.07 4,257.50 ND ND
6/9/11 99.81 4,255.76 ND ND 0.005 <0.001 <0.001 <0.001 <0.003 <0.002 <0.05 <1
1/9/12 99.96 4,255.61 ND ND
4/5/12 99.18 4,256.39 ND ND
5/14/12 Dry NM ND ND
9/27/12 102.31 4,253.26 ND ND
10/12/12 102.32 4,253.25 ND ND 0.008 <0.001 <0.001 <0.001 <0.003 0.003 <0.05 NA
6/6/13 102.05 4,253.52 ND ND 0.005 <0.001 <0.001 <0.001 <0.003 <0.002 <0.05 NA
11/4/13 105.53 4,250.04 ND ND 0.004 <0.001 <0.001 <0.001 <0.003 <0.002 <0.05 NA
9/11/15 104.87 4,250.70 ND ND 0.011 <0.002 <0.005 <0.005 <0.005 <0.005 <0.050 <1.0
8/18/16 104.87 4,250.70 ND ND 0.005 <0.002 <0.005 <0.005 <0.005 <0.005 <0.050 NA
6/12/17 105.37 4,250.20 ND ND
6/26/18 104.47 4,251.10 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 NA
5/29/19 104.35 4,251.22 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
3/1/22 104.63 4,250.94 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
11/30/23 103.44 4,252.13 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
MW-14 10/25/07 61.95 4,292.59 ND ND 0.12 0.077 2.1 0.26 1.4 0.0041 5.0 2.1
8/19/09 62.74 4,291.80 ND ND 0.105 <0.001 0.185 0.046 0.214 0.006 0.492 1.3
5/28/10 62.77 4,291.77 ND ND
6/9/11 62.90 4,291.64 ND ND 0.048 0.001 0.026 0.020 0.060 0.003 0.305 <1
1/9/12 62.48 4,292.06 ND ND
4/5/12 62.65 4,291.89 ND ND
5/14/12 62.91 4,291.63 ND ND
9/27/12 62.68 4,291.86 ND ND
10/12/12 62.55 4,291.99 ND ND 0.025 <0.005 0.014 0.108 0.795 0.026 2.03 NA
6/6/13 62.21 4,292.33 ND ND 0.001 <0.001 <0.001 0.013 0.009 <0.002 <0.05 NA
11/4/13 62.45 4,292.09 ND ND <0.01 <0.01 <0.01 0.073 0.711 0.045 2.04 NA
9/10/15 62.85 4,291.69 ND ND <0.005 <0.002 <0.005 0.025 0.083 <0.005 0.455 <1.0
8/18/16 63.28 4,291.26 ND ND 0.005 <0.002 <0.005 <0.005 <0.005 <0.005 <0.050 NA
6/12/17 63.25 4,291.29 ND ND
6/26/18 63.18 4,291.36 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 NA
5/29/19 63.33 4,291.21 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
3/1/22 63.98 4,290.56 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
11/30/23 63.63 4,290.91 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
MW-15 7/29/08 NR NR NM NM 0.015 0.040 0.093 0.006 0.041 <0.002 <0.5 <0.5
8/19/09 98.23 4,255.32 ND ND 0.008 <0.001 <0.001 <0.001 <0.003 <0.001 <0.05 <1
6/9/11 98.30 4,255.25 ND ND 0.007 <0.001 0.002 <0.001 <0.003 <0.001 <0.05 <1
1/9/12 98.31 4,255.24 ND ND
4/5/12 97.59 4,255.96 ND ND
5/14/12 97.49 4,256.06 ND ND
10/12/12 100.68 4,252.87 ND ND 0.014 <0.001 <0.001 <0.001 <0.003 <0.002 <0.05 NA
6/6/13 100.43 4,253.12 ND ND 0.002 <0.001 <0.001 <0.001 <0.003 <0.002 <0.05 NA
11/4/13 103.62 4,249.93 ND ND <0.001 <0.001 <0.001 <0.001 <0.003 <0.002 <0.05 NA
9/10/15 103.12 4,250.43 ND ND <0.005 <0.002 <0.005 <0.005 <0.005 <0.005 <0.050 <1.0
8/19/16 103.12 4,250.43 ND ND <0.005 <0.002 <0.005 <0.005 <0.005 <0.005 <0.050 NA
6/12/17 103.72 4,249.83 ND ND
6/26/18 102.57 4,250.98 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 NA
5/29/19 102.45 4,251.10 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
Not Sampled - Gauging Event Only
Not Sampled
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Not Sampled
Not Sampled
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Not Sampled
Not Sampled
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Page 5 of 6
MtBE Benzene Toluene Ethyl
Benzene
Total
Xylene
Naph-
thalene
TPH-
GRO
TPH-
DRO
0.2 0.005 1 0.7 10 0.7 1 1
0.2 0.3 3 4 10 0.7 10 10
Initial Screening Levels
RBCA Tier 1 Screening Levels
Table 1
Groundwater Analytical Results (mg/L)
Former Wiles Oil
8370 South State Street
Midvale, Utah
Well ID Date
Depth to
Water
(feet)
Ground-
water
Elevation
(feet)
Depth to
Product
(feet)
Product
Thickness
(feet)
Groundwater Concentrations (mg/L)
MW-15 3/1/22 102.98 4,250.57 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
Cont.11/30/23 102.78 4,250.77 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
MW-16 7/29/08 NR NR ND ND 0.034 0.072 0.143 0.010 0.076 <0.002 <0.5 <0.5
8/19/09 58.07 4,297.35 ND ND 0.082 0.246 0.122 0.006 0.204 0.007 1.31 <1
6/2/10 58.50 4,296.92 ND ND
6/10/11 58.95 4,296.47 ND ND 0.017 0.068 0.030 0.002 0.019 <0.002 0.279 <1
1/9/12 56.89 4,298.53 ND ND
4/5/12 57.98 4,297.44 ND ND
5/14/12 58.40 4,297.02 ND ND
10/12/12 58.40 4,297.02 ND ND 0.071 0.115 0.015 0.003 0.051 0.003 0.359 NA
6/6/13 59.47 4,295.95 ND ND 0.012 0.221 0.136 0.029 0.286 <0.01 1.2 NA
11/5/13 57.00 4,298.42 ND ND 0.010 <0.001 <0.001 0.002 <0.003 <0.002 <0.05 NA
9/10/15 59.10 4,296.32 ND ND <0.005 <0.002 <0.005 <0.005 <0.005 <0.005 <0.050 <1.0
8/18/16 60.62 4,294.80 ND ND <0.005 <0.002 <0.005 <0.005 <0.005 <0.005 <0.050 NA
6/12/17 60.90 4,294.52 ND ND
6/26/18
5/29/19 59.60 4,295.82 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
3/1/22 61.51 4,293.91 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
11/30/23 61.65 4,293.77 ND ND <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0
MW-17 7/29/08 NR NR NR NR 8.77 0.495 0.275 0.064 0.327 0.098 1.38 3.35
8/19/09 61.42 4,293.44 ND ND 7.35 1.81 0.468 0.313 1.91 0.156 6.4 2.1
6/10/11 61.59 4,293.27 ND ND 0.766 0.396 0.443 0.047 0.281 0.017 2.31 <1
1/9/12 60.91 4,293.95 ND ND
4/5/12
5/14/12 61.41 4,293.45 ND ND
10/12/12 61.34 4,293.52 ND ND 5.62 2.14 0.821 0.342 1.91 0.160 11.3 NA
6/6/13 61.85 4,293.01 ND ND 1.81 1.58 0.098 0.230 1.49 0.061 5.20 NA
11/5/13 61.53 4,293.33 ND ND 2.42 2.73 0.036 0.346 2.16 0.141 6.28 NA
9/10/15 61.35 4,293.51 ND ND 1.25 2.51 0.241 0.672 4.03 0.278 11.1 5.9
9/10/15*61.35 4,293.51 ND ND 1.31 2.33 0.236 0.592 3.66 0.246 10.3 5.7
8/18/16 62.03 4,292.83 ND ND 0.730 0.417 <0.005 0.081 0.233 0.026 1.93 NA
8/18/16*62.03 4,292.83 ND ND 0.764 0.434 <0.005 0.079 0.216 0.028 1.81 NA
6/12/17
Explanation of Abbreviations
mg/L = milligrams per liter
MtBE = methyl tertiary butyl ether
TPH-GRO = gasoline-range total petroleum hydrocarbons
TPH-DRO = diesel-range total petroleum hydrocarbons
< = analyte not detected above the presented laboratory reporting limit
RBCA = Risk-Based Corrective Action
Red bolded value exceeds Utah Department of Environmental Quality (UDEQ) Initial Screening Level (ISL) at off-site well locations.
Bold value exceeds UDEQ RBCA Tier 1 Screening Level at on-site well locations.
NM = Not Measured ND = Not Detected * = Duplicate Sample
NA = Not Analyzed NR = Not Recorded
NOTE:All data collected prior to 2009 and presented above in this table was obtained from a UDEQ-DERR file review conducted by Stantec.
= wells monitored during most recent event
The data was collected by others and cannot be confirmed, verified, or validated by Atlas.
Could Not Locate Well - Well Not Sampled
Not Sampled
Not gaged - Could not locate well Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Not Sampled
Not Sampled
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Not Sampled - Gauging Event Only
Well Abandoned due to construction across State Street
Page 6 of 6

APPENDIX A

LABORATORY ANALYTICAL REPORT
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
Atlas
Attn: Jim Coletta
358 South 700 East #B518
Salt Lake City, UT 84102
Work Order: 23K2353
Project: Wileys Oil
12/6/2023
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 13
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
Atlas
Jim Coletta
358 South 700 East #B518
Salt Lake City, UT 84102
PO#:
Receipt:
Date Reported:
Project Name:
11/30/23 16:40 @ 4.3 °C
12/6/2023
Wileys Oil
Sample ID: MW-1
Lab ID: 23K2353-01Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 11/30/23 15:00
Preparation
Date/Time
Sampled By: Olaf Questereit
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 11/30/2311/30/230.005 EPA 8260D/5030BNDBenzene
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDEthylbenzene
mg/L 11/30/2311/30/230.005 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDNaphthalene
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDToluene
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 11/30/2311/30/230.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 12/4/2312/4/231.0 EPA 8015 CNDDiesel Range Organics
Project Name: Wileys Oil CtF WO#: 23K2353
www.ChemtechFord.com
Page 2 of 13Page 2 of 13
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
Atlas
Jim Coletta
358 South 700 East #B518
Salt Lake City, UT 84102
PO#:
Receipt:
Date Reported:
Project Name:
11/30/23 16:40 @ 4.3 °C
12/6/2023
Wileys Oil
Sample ID: MW-3
Lab ID: 23K2353-02Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 11/30/23 16:25
Preparation
Date/Time
Sampled By: Olaf Questereit
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 11/30/2311/30/230.005 EPA 8260D/5030BNDBenzene
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDEthylbenzene
mg/L 11/30/2311/30/230.005 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDNaphthalene
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDToluene
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 11/30/2311/30/230.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 12/4/2312/4/231.0 EPA 8015 C2.8Diesel Range Organics
Project Name: Wileys Oil CtF WO#: 23K2353
www.ChemtechFord.com
Page 3 of 13Page 3 of 13
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
Atlas
Jim Coletta
358 South 700 East #B518
Salt Lake City, UT 84102
PO#:
Receipt:
Date Reported:
Project Name:
11/30/23 16:40 @ 4.3 °C
12/6/2023
Wileys Oil
Sample ID: MW-5
Lab ID: 23K2353-03Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 11/30/23 16:05
Preparation
Date/Time
Sampled By: Olaf Questereit
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 11/30/2311/30/230.005 EPA 8260D/5030BNDBenzene
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDEthylbenzene
mg/L 11/30/2311/30/230.005 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDNaphthalene
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDToluene
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 11/30/2311/30/230.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 12/4/2312/4/231.0 EPA 8015 CNDDiesel Range Organics
Project Name: Wileys Oil CtF WO#: 23K2353
www.ChemtechFord.com
Page 4 of 13Page 4 of 13
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
Atlas
Jim Coletta
358 South 700 East #B518
Salt Lake City, UT 84102
PO#:
Receipt:
Date Reported:
Project Name:
11/30/23 16:40 @ 4.3 °C
12/6/2023
Wileys Oil
Sample ID: MW-7
Lab ID: 23K2353-04Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 11/30/23 15:50
Preparation
Date/Time
Sampled By: Olaf Questereit
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 11/30/2311/30/230.005 EPA 8260D/5030BNDBenzene
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDEthylbenzene
mg/L 11/30/2311/30/230.005 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDNaphthalene
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDToluene
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 11/30/2311/30/230.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 12/4/2312/4/231.0 EPA 8015 CNDDiesel Range Organics
Project Name: Wileys Oil CtF WO#: 23K2353
www.ChemtechFord.com
Page 5 of 13Page 5 of 13
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
Atlas
Jim Coletta
358 South 700 East #B518
Salt Lake City, UT 84102
PO#:
Receipt:
Date Reported:
Project Name:
11/30/23 16:40 @ 4.3 °C
12/6/2023
Wileys Oil
Sample ID: MW-8
Lab ID: 23K2353-05Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 11/30/23 15:35
Preparation
Date/Time
Sampled By: Olaf Questereit
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 11/30/2311/30/230.005 EPA 8260D/5030BNDBenzene
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDEthylbenzene
mg/L 11/30/2311/30/230.005 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDNaphthalene
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDToluene
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 11/30/2311/30/230.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 12/4/2312/4/231.0 EPA 8015 CNDDiesel Range Organics
Project Name: Wileys Oil CtF WO#: 23K2353
www.ChemtechFord.com
Page 6 of 13Page 6 of 13
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
Atlas
Jim Coletta
358 South 700 East #B518
Salt Lake City, UT 84102
PO#:
Receipt:
Date Reported:
Project Name:
11/30/23 16:40 @ 4.3 °C
12/6/2023
Wileys Oil
Sample ID: MW-13
Lab ID: 23K2353-06Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 11/30/23 14:00
Preparation
Date/Time
Sampled By: Olaf Questereit
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 11/30/2311/30/230.005 EPA 8260D/5030BNDBenzene
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDEthylbenzene
mg/L 11/30/2311/30/230.005 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDNaphthalene
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDToluene
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 11/30/2311/30/230.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 12/4/2312/4/231.0 EPA 8015 CNDDiesel Range Organics
Project Name: Wileys Oil CtF WO#: 23K2353
www.ChemtechFord.com
Page 7 of 13Page 7 of 13
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
Atlas
Jim Coletta
358 South 700 East #B518
Salt Lake City, UT 84102
PO#:
Receipt:
Date Reported:
Project Name:
11/30/23 16:40 @ 4.3 °C
12/6/2023
Wileys Oil
Sample ID: MW-14
Lab ID: 23K2353-07Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 11/30/23 13:38
Preparation
Date/Time
Sampled By: Olaf Questereit
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 11/30/2311/30/230.005 EPA 8260D/5030BNDBenzene
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDEthylbenzene
mg/L 11/30/2311/30/230.005 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDNaphthalene
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDToluene
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 11/30/2311/30/230.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 12/4/2312/4/231.0 EPA 8015 CNDDiesel Range Organics
Project Name: Wileys Oil CtF WO#: 23K2353
www.ChemtechFord.com
Page 8 of 13Page 8 of 13
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
Atlas
Jim Coletta
358 South 700 East #B518
Salt Lake City, UT 84102
PO#:
Receipt:
Date Reported:
Project Name:
11/30/23 16:40 @ 4.3 °C
12/6/2023
Wileys Oil
Sample ID: MW-15
Lab ID: 23K2353-08Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 11/30/23 14:40
Preparation
Date/Time
Sampled By: Olaf Questereit
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 11/30/2311/30/230.005 EPA 8260D/5030BNDBenzene
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDEthylbenzene
mg/L 11/30/2311/30/230.005 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDNaphthalene
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDToluene
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 11/30/2311/30/230.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 12/4/2312/4/231.0 EPA 8015 CNDDiesel Range Organics
Project Name: Wileys Oil CtF WO#: 23K2353
www.ChemtechFord.com
Page 9 of 13Page 9 of 13
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
Atlas
Jim Coletta
358 South 700 East #B518
Salt Lake City, UT 84102
PO#:
Receipt:
Date Reported:
Project Name:
11/30/23 16:40 @ 4.3 °C
12/6/2023
Wileys Oil
Sample ID: MW-16
Lab ID: 23K2353-09Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 11/30/23 15:20
Preparation
Date/Time
Sampled By: Olaf Questereit
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 11/30/2311/30/230.005 EPA 8260D/5030BNDBenzene
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDEthylbenzene
mg/L 11/30/2311/30/230.005 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDNaphthalene
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDToluene
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 11/30/2311/30/230.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 12/4/2312/4/231.0 EPA 8015 CNDDiesel Range Organics
Project Name: Wileys Oil CtF WO#: 23K2353
www.ChemtechFord.com
Page 10 of 13Page 10 of 13
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
Atlas
Jim Coletta
358 South 700 East #B518
Salt Lake City, UT 84102
PO#:
Receipt:
Date Reported:
Project Name:
11/30/23 16:40 @ 4.3 °C
12/6/2023
Wileys Oil
Sample ID: MW-5D
Lab ID: 23K2353-10Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 11/30/23 16:10
Preparation
Date/Time
Sampled By: Olaf Questereit
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 11/30/2311/30/230.005 EPA 8260D/5030BNDBenzene
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDEthylbenzene
mg/L 11/30/2311/30/230.005 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDNaphthalene
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDToluene
mg/L 11/30/2311/30/230.012 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 11/30/2311/30/230.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 12/4/2312/4/231.0 EPA 8015 CNDDiesel Range Organics
Project Name: Wileys Oil CtF WO#: 23K2353
www.ChemtechFord.com
Page 11 of 13Page 11 of 13
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
Atlas
Jim Coletta
358 South 700 East #B518
Salt Lake City, UT 84102
PO#:
Receipt:
Date Reported:
Project Name:
11/30/23 16:40 @ 4.3 °C
12/6/2023
Wileys Oil
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: Wileys Oil CtF WO#: 23K2353
www.ChemtechFord.com
Page 12 of 13Page 12 of 13
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