DERR-2025-004394

Page 1
ATLAS

May 12, 2025

Mr. Mark Crim
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 Western Transmission Facility
150 North Carbonville Road
Price, Utah
Facility ID #5000409
UST Release Site HZZ
Work Assignments HZZ-33-A1
UDEQ Technical Contract #216364

Dear Mr. Crim:

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

INTRODUCTION

On March 27 and 28, 2025, Atlas Technical Consultant (Atlas) conducted a groundwater
monitoring event at the former Western Transmission Facility located at 150 North Carbonville
Road, Price, 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 HZZ-33-A1. The approved work plan included gauging of all
the monitoring wells and sampling wells MW-3, MW -6, MW -7, MW -8, MW -13, MW -15, MW -17,
MW -18, and MW -20 through MW-24.

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 the collection of groundwater elevation data, sampling the
monitoring wells, and preparing a summary report. Free product was not measured in any of the
wells during the March 2025 sampling event. A site map depicting the monitoring well locations
and surrounding area features is presented as Figure 1. 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.

358 South 700 East, B518
Salt Lake City, Utah 84102
Office: 801.935.4917
www.oneatlas.com

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ATLAS
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.
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 field blank sample was
also collected. The laboratory report and chain of custody are presented in Appendix A.

No free product absorbent socks were placed in any of the monitoring wells in December 2024,
so there were no socks to remove during the March 2025 sampling event. Monitoring well MW-9
was destroyed/paved over during the spring of 2023. Historically, free product had been
measured in MW -9. Given that free product was not measured in any of the wells during the
March 2025 event, no product absorbent socks were placed in any of the monitoring wells.

Field Parameter and Chemical Analysis Results

Field parameter measurements and groundwater laboratory results are presented in Table 1.
The March 2025 groundwater elevation data were utilized to prepare a groundwater contour
map (Figure 2) for the site. The data indicate that the groundwater gradient appears to be
toward the west, with a gradient of approximately 0.0306 ft/ft measured between MW -18 and
MW -20.

The March 2025 laboratory results for the samples collected from on-site monitoring wells (MW -
3, MW -6, MW -13, MW -15, and MW-20) indicated no detection of MBTEXN, TPH-GRO, or TPH-
DRO above their respective Tier 1 Screening Levels.

The March 2025 laboratory results for the samples collected from the off-site monitoring wells
indicate the presence of benzene above its Initial Screening Level (ISL) of 0.005 mg/L in MW -8
(1.580 mg/L). In addition, ethylbenzene was detected above its ISL of 0.7 mg/L in MW -8 (1.150
mg/L). No other MBTEXN constituents were measured above their respective ISLs in any of the
other off-site wells sampled. The benzene isoconcentration map is presented as Figure 3.

The TPH-GRO ISL of 1.0 mg/L was exceeded in MW -8 (9.300 mg/L). TPH-GRO was not
measured above the ISL in any of the other off-site wells sampled. The TPH-GRO
isoconcentration map is presented as Figure 4. The TPH-DRO ISL of 1.0 mg/L was exceeded in
MW -7 (2.550 mg/L), MW -8 (5.800 mg/L), MW -21 (5.0900 mg/L), and MW -23 (1.690 mg/L).
TPH-DRO was not measured above the ISL in any of the other off-site wells sampled. The TPH-
DRO isoconcentration map is presented as Figure 5.

To aid in long-term data trends, hydrographs were prepared for MW -8 and MW -15. These are
presented as Figures 6 and 7; and are discussed in the following paragraphs. These wells were
selected based on location in relation to the release source and historically impacted areas. The
hydrograph for MW -8 (Figure 6) indicates that the groundwater elevation has increased since
the December 2024 monitoring event. Historical data indicates that benzene concentrations
have fluctuated between 0.983 mg/L (June 2020) to 3.93 mg/L (May 2011). In March 2025 the
benzene concentration was measured at 1.580 mg/L. Historical data indicates that the TPH-
GRO concentrations have fluctuated between 2.7 mg/L (June 2008) to 115.00 mg/L (September
2012). In March 2025 the TPH-GRO concentration was measured at 9.300 mg/L.

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ATLAS
The hydrograph for MW -15 (Figure 7) indicates that the groundwater elevation has decreased
since the December 2024 monitoring event. The benzene concentrations have fluctuated
between 0.00601 mg/L (March 2025) to 0.420 (May 2012). The data collected in 2020 indicated
a steady decrease; however, since 2021, the benzene concentrations in MW -15 have increased
or decreased in correlation to decreasing or increasing water levels. The benzene concentration
for March 2025 was 0.00601 mg/L, which is the lowest benzene concentration since the well
was first monitored on January 11, 2011. TPH-GRO concentrations have decreased since the
December 2024 monitoring event. The TPH-GRO concentration for March 2025 was 0.735
mg/L.

CONCLUSIONS AND RECOMMENDATIONS

Free product was not measured in any of the wells during the March 2025 sampling event.
Laboratory results for on-site wells indicated no detection of MBTEXN constituents above their
respective Tier 1 Screening Levels. The TPH-GRO and TPH-DRO Tier 1 Screening Levels were
not exceeded in any of the on-site monitoring wells sampled.

Laboratory results indicate that the benzene ISL was exceeded in off-site well MW -8. In
addition, the ethylbenzene ISL was exceeded in MW -8. TPH-GRO was measured above the ISL
of 1.0 mg/L in MW -8. TPH-DRO exceeded the ISL of 1.0 mg/L in MW -7, MW -8, MW -21, and
MW -23. No other ISLs were exceeded in any of the other off-site monitoring wells sampled.

In June of 2010 approximately 1,461 yd3 of impacted soil were removed from the site and
transported to the Emery County Landfill for disposal. The results of the confirmatory soil
sampling suggested that significant adsorbed phase hydrocarbons were successfully removed
during the excavation activities; however, the data from the March 2025 monitoring event
indicate that groundwater impacts above ISLs are still present off-site.

An expanded subsurface investigation was performed in December 2023. Five monitoring wells
(MW -20 through MW-24) were installed in the general vicinity of the former Aboveground
Storage Tank (AST) facility and to the southwest off site. An attempt was made to obtain an
access agreement from the automobile dealership located to the west beyond Carbonville Road
to install additional wells; however, the property owner denied access to the property, limiting
the attempt to define the extent of free product impacts.

The March 2025 groundwater monitoring event concluded the monitoring activities scheduled
under work assignment HZZ-33-A1. Based upon the March 2025 laboratory results and
historical groundwater monitoring data collected at the site, Atlas recommends that the
groundwater monitoring program continue at the site.

Our services consist of professional opinions and recommendations made in accordance with
generally accepted geotechnical and environmental engineering principles and practices. This
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].
Page 4
ATLAS
Sincerely,

Atlas Technical Consultants
Olaf Questereit Jim Coletta, P.G.
Senior Technician Branch Manager
Utah Certified PST Consultant

FIGURES

0 120'60'30'
FIGURE 1
0 120'60'30'
FIGURE 2
0 120'60'30'
FIGURE 3
0 120'60'30'
FIGURE 4
0 120'60'30'
FIGURE 5
67.2
68.2
69.2
70.2
71.2
72.2
73.2
0.001
0.010
0.100
1.000
10.000
100.000
1000.000
Gr
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Figure 6
MW-8 Benzene, TPH-GRO, and Groundwater Elevation vs. Time
Benzene TPH-GRO Benzene Initial Screening Level
TPH-GRO Initial Screening Level Groundwater Elevation
Top of Well Casing Resurveyed on 06/27/2024
73.5
74.5
75.5
76.5
77.5
78.5
79.5
80.5
0.001
0.010
0.100
1.000
10.000
100.000
Gr
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Figure 7
MW-15 Benzene, TPH-GRO, and Groundwater Elevation vs. Time
Benzene TPH-GRO Benzene Tier 1 Screening Level
TPH-GRO Tier 1 Screening Level Groundwater Elevation
Well casing
resurveyed on
6/27/24.

TABLES

1 of 8
TABLE 1
GROUNDWATER ANALYTICAL AND GROUNDWATER ELEVATION DATA SUMMARY
WESTERN TRANSMISSION
150 NORTH CARBONVILLE ROAD
PRICE, UTAH
SAMPLE ETHYL-NAPH-
LOCATION DATE BENZENE TOLUENE BENZENE XYLENES THALENE MTBE TPH-GRO TPH-DRO DTW FPT WTE
TOC (ft.)MM/DD/YY (mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(feet)(feet)(feet)
Initial Screening Levels 0.005 1.0 0.7 10 0.7 0.2 1.0 1.0
RBCA Tier 1 Levels 0.3 3.0 4.0 10 0.7 0.2 10 10
MW-3 06/25/08 NS NS NS NS NS NS NS NS 19.57 0.38 80.55
99.83 07/10/08 NS NS NS NS NS NS NS NS 19.81 0.13 80.12
03/24/09 0.00048 J <0.005 0.0008 J 0.00085 J 0.00087 J <0.005 0.36 NA 20.67 0.38 79.44
01/11/11 NM NM NM
05/23/11 <0.001 <0.002 <0.002 0.0013J <0.010 <0.002 0.156 J 1660 19.04 0.07 80.84
09/26/11 <0.001 <0.001 <0.001 <0.003 0.004 <0.001 4.89 F 46.7 F,M,X 18.72 Trace 81.11
05/07/12 <0.005 <0.005 <0.005 <0.015 <0.01 <0.005 1.02 F 55.0 F,M,X 18.78 Trace 81.05
09/17/12 <0.02 <0.02 <0.02 <0.06 <0.04 <0.02 <0.25 F 48.2 F,M,X 19.49 Trace 80.34
04/02/13 <0.005 <0.005 <0.005 <0.015 <0.01 <0.005 1.40 F 14.6 F,M,X 19.67 0.03 80.18
04/02/13*<0.005 <0.005 <0.005 <0.015 <0.01 <0.005 2.58 F 25.0 F,M,X NA NA NA
01/27/14 <0.005 <0.005 <0.005 <0.015 0.018 <0.005 1.17 F 108 X,M,F 20.30 0.36 79.80
08/13/14 <0.01 <0.001 <0.01 <0.03 0.203 <0.01 5.26 F 143 X,M,F Jlo 19.78 0.08 80.11
01/20/15 <0.001 <0.001 <0.001 <0.003 <0.002 <0.001 0.885 F 6.8 X,F,M 19.35 Trace 80.48
07/15/15 <0.020 R-06 <0.050 R-06 <0.050 R-06 <0.050 R-06 <0.050 R-06 <0.050 R-06 <2.40 R-06 185 19.53 0.30 80.53
08/23/16 20.68 0.23 79.32
02/16/17 20.20 0.03 79.65
08/30/17 <0.001 <0.001 <0.001 <0.003 <0.005 <0.001 102 437 19.77 0.00 80.06
02/20/18 <0.005 <0.012 <0.012 <0.012 <0.012 <0.005 <0.125 25.4 20.10 0.00 79.73
08/06/18 20.49 0.12 79.43
01/24/19 NA NA NA
07/18/19 <0.001 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.675 B 38.4 19.93 0.00 79.90
01/22/20 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 <0.100 5.590 19.65 0.00 80.18
06/18/20 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.317 B 1.200 19.93 0.00 79.90
12/03/20 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.0774 J 2.640 19.58 0.00 80.25
09/28/21 21.43 0.01 78.41
03/14/22 20.21 0.04 79.65
09/06/22 20.60 0.24 79.41
03/06/23 19.96 0.03 79.89
01/23/24 <0.00100 <0.00100 <0.00100 <0.00300 0.00165 J <0.00100 2.750 14.700 20.15 0.00 79.68
95.17 06/28/24 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 J4 <0.500 2.390 20.24 0.00 74.93
09/17/24 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.0719 B,J 4.240 20.18 0.00 74.99
12/10/24 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.0765 B,J 2.220 19.92 0.00 75.25
03/28/25 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.0552 J 1.500 19.98 0.00 75.19

MW-4 06/25/08 0.310 0.029 0.600 1.24 0.099 <0.005 9.50 1.80 19.84 0.00 80.16
100.00 07/10/08 NS NS NS NS NS NS NS NS 19.96 0.00 80.04
03/24/09 0.037 0.0011 J 0.14 0.034 0.0021 J <0.005 1.3 2.5 20.26 0.00 79.74
01/11/11
MW-5 06/25/08 0.029 0.079 0.083 0.530 0.039 <0.005 2.80 0.80 18.44 0.00 80.11
98.55 07/10/08 NS NS NS NS NS NS NS NS 18.54 0.00 80.01
03/24/09 0.026 0.013 0.087 0.052 0.0013 J <0.005 0.27 0.35 18.85 0.00 79.70
01/11/11
MW-6 06/25/08 0.015 0.0016 J 0.044 0.027 0.0059 <0.005 1.10 1.70 18.28 0.00 80.15
98.43 07/10/08 NS NS NS NS NS NS NS NS 18.38 0.00 80.05
03/24/09 0.0035 J <0.005 0.019 0.0179 0.0097 <0.005 0.22 3.8 18.68 0.00 79.75
98.24 01/11/11 0.049 0.0032J 0.360 0.077 0.072 <0.005 5.3 4.5 17.62 0.12 80.71
01/11/11*0.034 0.0018J 0.170 0.040 0.057 <0.005 5.7 4.7 NA NA NA
05/23/11 <0.001 <0.002 <0.002 0.0013J <0.010 <0.002 0.120 J 47.1 17.48 0.00 80.76
09/26/11 0.035 <0.005 0.180 0.059 0.061 <0.005 7.23 F <1F Jhi,M,X 17.16 0.00 81.08
05/07/12 0.022 <0.005 0.060 <0.015 0.016 <0.005 3.87 F 3.2 F,M,X 17.21 0.00 81.03
09/17/12 0.109 <0.02 0.191 <0.06 <0.04 <0.02 2.75 F 5.6 F,M,X 18.18 0.27 80.26
04/02/13 0.065 <0.005 0.155 0.028 0.055 <0.005 2.64 F 8.52 F,M,X 18.08 0.03 80.18
01/27/14 0.029 <0.02 0.099 <0.06 <0.04 <0.02 35.9 F 45.5 X,M,F 18.46 0.02 79.80
08/13/14 <0.01 <0.01 0.037 <0.03 0.030 <0.001 1.06 F 14.4 X,M,F 18.21 0.03 80.05
01/20/15 0.018 <0.001 0.048 0.003 0.021 <0.001 2.84 F 7.7 X,M,F 17.97 0.03 80.29
07/15/15 0.013 <0.005 0.025 <0.005 0.021 <0.005 1.02 5.5 18.97 0.19 79.41
08/23/16 19.17 0.22 79.24
02/16/17 18.68 0.03 79.58
08/30/17 18.30 0.08 80.00
02/20/18 <0.005 <0.012 0.012 <0.012 <0.012 <0.005 0.550 3.7 18.60 0.00 79.64
2/20/18*<0.005 <0.012 0.016 <0.012 <0.012 <0.005 0.587 3.3 NA NA NA
08/06/18 19.02 0.14 79.33
01/24/19 18.78 0.07 79.51
07/18/19 0.00519 <0.00100 0.0161 <0.00300 <0.00500 <0.00100 2.35 B 5.35 18.45 0.00 79.79
07/18/19*<0.0100 <0.0100 0.0133 <0.0300 <0.0500 <0.0100 <5.0 5.40 NA NA NA
01/22/20 0.00881 <0.00100 0.0182 <0.00300 0.00390 J <0.00100 0.498 12.800 18.17 0.00 80.07
06/18/20 0.00122 <0.00100 0.00276 <0.00300 <0.00500 <0.00100 0.317 B 1.680 18.47 0.00 79.77
12/03/20 0.0113 0.000409 J 0.0261 0.000829 J 0.00198 J <0.00100 0.860 1.440 18.11 0.00 80.13
Not Sampled (Free Product In Well)
Under Snow Pack, Not Located
Not Sampled (Free Product In Well)
Not Sampled (Free Product In Well)
Not Sampled (Free Product In Well)
Not Sampled (Free Product In Well)
Not Sampled (Free Product In Well)
Destroyed During Excavation
Destroyed During Excavation
Not Located (well was under a snow removal pile)
Not Sampled (Free Product In Well)
Not Sampled (Free Product In Well)
Not Sampled (Free Product In Well)
Not Sampled (Free Product In Well)
Not Sampled (Free Product In Well)
Not Sampled (Free Product In Well)
2 of 8
TABLE 1
GROUNDWATER ANALYTICAL AND GROUNDWATER ELEVATION DATA SUMMARY
WESTERN TRANSMISSION
150 NORTH CARBONVILLE ROAD
PRICE, UTAH
SAMPLE ETHYL-NAPH-
LOCATION DATE BENZENE TOLUENE BENZENE XYLENES THALENE MTBE TPH-GRO TPH-DRO DTW FPT WTE
TOC (ft.)MM/DD/YY (mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(feet)(feet)(feet)
Initial Screening Levels 0.005 1.0 0.7 10 0.7 0.2 1.0 1.0
RBCA Tier 1 Levels 0.3 3.0 4.0 10 0.7 0.2 10 10
MW-6 12/03/20*0.0127 0.000421 J 0.0284 0.000935 J 0.00223 J <0.00100 0.588 1.300 NA NA NA
Cont.09/28/21 0.00422 <0.00100 0.0155 0.000416 J 0.00141 J <0.00100 0.469 B 1.770 18.97 0.00 79.27
03/14/22 0.00536 <0.00100 0.0169 0.000493 J 0.00200 J <0.00100 0.708 1.160 18.74 0.00 79.50
09/07/22 0.0125 0.000370 J 0.0784 0.00141 J 0.0131 C4 <0.00100 1.400 8.580 J3 18.96 0.00 79.28
03/06/23 18.52 0.05 79.76
01/23/24 0.00138 <0.00100 0.0158 0.000664 J 0.00133 J <0.00100 1.530 1.630 18.69 0.00 79.55
93.63 06/28/24 0.00180 <0.00100 0.0228 0.00120 J 0.00506 <0.00100 J4 1.300 4.550 18.77 0.00 74.86
09/17/24 0.00253 <0.00100 0.0272 0.00136 J 0.00458 J <0.00100 4.500 2.850 18.70 0.00 74.93
12/10/24 0.0131 <0.00100 0.0600 0.00422 J 0.0112 J <0.00500 1.360 2.670 18.52 0.00 75.11
03/28/25 0.00130 <0.00100 0.0119 0.000870 J 0.00147 J <0.00100 0.546 1.510 18.51 0.00 75.12
MW-7 06/25/08 <0.005 <0.005 <0.005 0.0032 J 0.0038 J <0.005 0.050 0.520 17.17 0.00 80.13
97.30 07/10/08 NS NS NS NS NS NS NS NS 17.27 0.00 80.03
03/24/09 <0.005 <0.005 <0.005 <0.005 0.00012 J <0.005 0.03 J 2.00 17.57 0.00 79.73
01/11/11 0.00026J <0.001 0.00078J <0.001 0.00046J <0.001 0.14 5.8 16.86 0.27 80.64
05/23/11 0.0065 <0.002 0.0849 0.0168 0.0204 <0.002 1.42 43.6 16.55 0.00 80.75
09/26/11 <0.001 <0.001 <0.001UJ <0.003 <0.002 <0.001 0.634 F 4.1 F,M,X 16.20 0.42 81.42
9/26/2011*<0.001 <0.001 <0.001 <0.003 <0.002 <0.001UJ 0.235 F 7.0 F,Jlo, M,X NA NA NA
05/07/12 <0.005 <0.005 <0.005 <0.015 <0.001 <0.005 0.050 F 6.8 F,M,X 16.49 0.25 81.00
09/17/12 <0.02 <0.02 <0.02 <0.06 <0.04 <0.02 <0.25 F 8.9 F,M,X 17.35 0.40 80.25
04/02/13 <0.02 <0.02 <0.02 <0.06 <0.04 <0.02 1.61 F 18.9 F,M,X 17.56 0.43 80.06
01/27/14 <0.01 <0.01 <0.01 <0.03 <0.02 <0.01 1.05 F 36.9 X,M,F 17.50 0.33 80.05
08/13/14 <0.001 <0.001 <0.001 <0.003 0.002 <0.001 <0.05 F <1 X,M,F 17.30 0.00 80.00
01/20/15 <0.001 <0.001 <0.001 <0.003 0.009 <0.001 0.300 F 35.0 X,M,F 16.95 Trace 80.35
07/15/15 <0.002 <0.005 <0.005 <0.005 <0.005 <0.005 <0.240 3.1 17.90 0.10 79.48
08/23/16 18.74 0.84 79.19
02/16/17 18.04 0.44 79.59
08/30/17 17.67 0.38 79.92
02/20/18 17.62 0.23 79.85
08/06/18 18.99 1.16 79.18
01/24/19 NA NA NA
07/18/19 17.44 0.03 79.88
01/22/20 17.45 0.33 80.10
06/18/20 17.73 0.25 79.76
12/03/20 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.114 2.270 17.15 0.00 80.15
09/28/21 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.146 B 1.980 18.00 0.00 79.30
03/14/22 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.0863 BJ 2.010 22.78 0.00 74.52
09/06/22 18.55 0.54 79.16
03/06/23 17.74 0.25 79.75
03/06/23 17.85 0.17 79.58
01/22/24 17.85 0.17 79.58
92.63 06/28/24 <0.00100 <0.00100 <0.00100 0.000298 J <0.00500 <0.00100 J4 0.0941 J 3.510 17.80 0.00 74.83
09/17/24 <0.00100 <0.000344 J <0.00100 0.000309 J <0.00132 J <0.00100 0.116 B 3.040 17.76 0.00 74.87
12/10/24 <0.00100 0.000316 J <0.00100 <0.00300 0.00147 J <0.00100 0.122 B 2.290 17.50 0.00 75.13
03/28/25 <0.00100 <0.00100 <0.00100 0.000177 J <0.00500 <0.00100 0.100 2.550 17.55 0.00 75.08

MW-8 06/25/08 1.10 0.280 0.900 1.85 0.200 <0.005 2.70 3.80 23.93 0.00 73.33
97.26 07/10/08 NS NS NS NS NS NS NS NS 24.19 0.00 73.07
03/24/09 1.60 0.36 0.69 0.98 0.12 <0.005 12 6.40 25.06 0.00 72.20
01/11/11 3.00 0.920 1.400 3.600 0.310 <0.010 29 3.9 24.68 0.01 72.59
05/23/11 3.86 1.19 1.82 5.68 0.421J <0.010 12 14.3 23.90 0.00 73.36
5/23/11*3.93 1.53 1.76 7.28 0.412J <0.010 13.8 29.8 NA NA NA
09/26/11 2.92 0.43 1.57 4.43 0.356 <0.02UJ 20.9 F 10.4 F,M,X 24.41 0.00 72.85
05/07/12 2.95 0.908 1.44 3.92 0.287 <0.02 22.1 F 1.4 F,M,X 24.25 0.00 73.01
09/17/12 1.68 0.308 2.10 4.22 <0.5 <0.25 115 F 22.9 F,M,X 25.11 Trace 72.15
04/02/13 1.32 0.086 0.922 0.796 0.149 <0.02 24.2 F 1.91 F,M,X 24.99 Trace 72.27
01/27/14 2.34 0.319 1.19 2.32 0.214 <0.02 11.8 F 6.3 X,M,F,Jlo 25.54 0.05 71.76
08/13/14 1.07 0.087 1.01 0.880 0.093 <0.01 7.94 F 1.1 F,M,X 25.96 0.33 71.55
01/20/15 3.02 0.223 1.31 1.73 0.271 <0.01 11.6 F 3.7 F,M,X 24.70 Trace 72.56
07/15/15 2.40 <0.500 1.54 2.12 <0.500 <0.500 7.70 12.5 25.13 Trace 72.13
08/23/16 26.36 0.27 71.10
02/16/17 1.75 0.167 1.03 2.62 0.215 <0.100 13.8 17.9 25.41 0.00 71.85
08/30/17 1.93 0.0919 1.65 1.71 0.338 <0.05 25.0 13.0 25.06 0.00 72.20
02/20/18 2.34 0.078 1.68 1.11 0.227 <0.005 12.0 7.9 25.30 0.00 71.96
08/06/18 2.36 0.205 1.72 1.86 0.200 <0.005 7.34 43.7 25.81 0.00 71.45
01/24/19 2.58 0.219 1.74 2.77 0.146 <0.005 14.8 7.0 25.50 0.00 71.76
07/18/19 1.58 <0.100 1.57 2.54 <0.500 <0.100 <50.0 10.6 24.28 0.00 72.98
01/22/20 1.660 0.0949 1.450 1.110 0.185 <0.0200 23.000 7.540 24.76 0.00 72.50
Not Sampled (Free Product In Well)
Not Sampled (Free Product In Well)
Not Sampled (Free Product In Well)
Not Sampled (Free Product In Well)
Not Sampled (Free Product In Well)
Not Sampled (Free Product In Well)
Not Sampled (Free Product In Well)
Not Sampled (Free Product In Well)
Not Sampled (Free Product In Well)
Not Sampled (Free Product In Well)
Not Sampled (Free Product In Well)
Not Sampled (Free Product In Well)
Not Sampled (Free Product In Well)
Not Located (well was under a snow removal pile)
Not Sampled (Free Product In Well)
3 of 8
TABLE 1
GROUNDWATER ANALYTICAL AND GROUNDWATER ELEVATION DATA SUMMARY
WESTERN TRANSMISSION
150 NORTH CARBONVILLE ROAD
PRICE, UTAH
SAMPLE ETHYL-NAPH-
LOCATION DATE BENZENE TOLUENE BENZENE XYLENES THALENE MTBE TPH-GRO TPH-DRO DTW FPT WTE
TOC (ft.)MM/DD/YY (mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(feet)(feet)(feet)
Initial Screening Levels 0.005 1.0 0.7 10 0.7 0.2 1.0 1.0
RBCA Tier 1 Levels 0.3 3.0 4.0 10 0.7 0.2 10 10
MW-8 01/22/20*1.440 0.116 1.110 1.350 0.347 <0.0250 37.500 7.740 NA NA NA
Cont.06/18/20 0.983 0.0559 J 1.250 0.840 0.198 J <0.100 10.600 8.810 24.52 0.00 72.74
12/03/20 2.140 0.0660 1.270 1.380 0.0815 J <0.100 18.000 7.490 25.28 0.00 71.98
09/28/21 2.060 0.127 1.030 1.920 <0.500 <0.100 25.500 6.160 25.83 0.00 71.43
03/14/22 2.480 0.121 1.320 2.270 0.170 J <0.100 22.500 J3 9.010 25.31 0.00 71.95
09/07/22 1.660 0.117 1.080 1.710 0.0379 J,J4 <0.0100 14.700 7.350 J3 25.99 0.00 71.27
03/06/23 2.270 0.114 1.120 1.640 0.000151 J <0.0500 21.100 B 5.940 25.30 0.00 71.96
01/23/24 2.270 0.0366 1.270 0.478 0.128 <0.00100 12.300 7.590 25.30 0.00 71.96
92.62 06/28/24 1.820 0.0546 J 1.050 0.407 <0.00500 <0.00100 J4 13.300 5.680 24.66 0.00 67.96
09/17/24 2.140 0.0358 J 1.180 0.313 <0.00500 <0.00100 7.520 6.340 25.22 0.00 67.40
12/10/24 1.860 0.0293 J 1.130 0.427 0.0838 J <0.0500 11.300 5.930 25.39 0.00 67.23
03/28/25 1.580 0.0207 J 1.150 0.464 0.258 C5 <0.0500 9.300 5.800 25.31 0.00 67.31
MW-9 06/25/08 0.021 0.0039 J 0.024 0.074 0.012 <0.005 1.40 6.40 22.50 0.00 72.79
95.29 07/10/08 NS NS NS NS NS NS NS NS 24.19 0.00 71.10
03/24/09 0.0058 <0.005 0.0017 J 0.00192 J 0.00044 J <0.005 0.10 5.50 23.44 0.00 71.85
01/11/11 0.082 0.016 0.095 0.227 0.045 <0.005 4.5 2.3 23.40 0.32 72.13
05/23/11 0.109 0.0174 0.164 0.332 0.0616 <0.010 3.84 321 22.58 0.18 72.85
09/26/11 0.059 0.010 0.123 0.307 0.089 <0.005UJ 7.41 F 11.6 F,M,X 23.26 0.42 72.35
05/07/12 0.058 0.010 0.078 0.197 0.044 <0.01 10.6 F 1.6 F,M,X 22.86 0.03 72.45
09/17/12 0.037 <0.01 0.051 0.145 <0.02 <0.01 1.32 F 4.2 F,M,X 24.35 0.84 71.57
04/02/13 0.068 <0.01 0.028 0.037 0.029 <0.01 4.27 F 2.39 F,M,X 23.62 0.24 71.85
01/27/14 0.044 0.008 0.076 0.186 0.081 <0.005 1.97 F 32.4 F,M,X 23.62 0.98 72.41
08/13/14 0.021 <0.01 0.039 0.058 <0.02 <0.01 0.550 F 45.2 F.M.X.Jlo 24.79 0.73 71.05
01/20/15 0.080 <0.02 0.131 0.247 0.127 <0.02 7.47 F 60.7 F,M,X 23.07 0.32 72.46
07/15/15 0.069 <0.050 0.098 <0.050 <0.050 <0.050 <2.40 7.9 24.05 0.52 71.63
08/23/16 25.54 1.13 70.60
02/16/17 24.65 0.90 71.32
08/30/17 23.46 0.94 72.54
02/20/18 24.47 0.72 71.36
08/06/18 24.88 0.66 70.91
01/24/19 24.42 0.42 71.19
07/18/19 22.93 0.18 72.50
01/22/20 23.47 0.09 71.89
06/18/20 22.14 0.01 73.16
12/03/20 23.90 0.00 71.39
09/28/21 24.37 0.00 70.92
03/14/22 23.84 0.00 71.45
09/06/22 24.75 0.31 70.77
03/06/23
MW-10 03/24/09 0.00035 J 0.00037 J <0.005 <0.005 <0.005 <0.005 <0.1 0.53 18.50 0.00 72.13
90.63 01/11/11 NM NM NM
05/23/11 <0.001 <0.002 <0.002 <0.004 <0.010 <0.002 <0.20 <0.42 17.46 0.00 73.17
09/26/11 <0.001 <0.001 <0.001 <0.003 <0.002 <0.001UJ <0.05 F <1 F,M,X 18.31 0.00 72.32
05/07/12 <0.001 <0.001 <0.001 <0.003 <0.002 <0.001 <0.05 F <1 F,M,X 17.87 0.00 72.76
5/7/2012*<0.001 <0.001 <0.001 <0.003 <0.002 <0.001 <0.05 F <1 F,M,X NA NA NA
09/17/12 <0.001 <0.001 <0.001 <0.003 <0.002 <0.001 <0.05 F <1 F,M,X 18.75 0.00 71.88
04/02/13 <0.001 <0.001 <0.001 <0.003 <0.002 <0.001 <0.05 F <1 F,M,X 18.60 0.00 72.03
01/27/14 <0.001 <0.001 <0.001 <0.003 0.004 <0.001 <0.05 F <1 F,M,X 19.17 0.00 71.46
08/13/14 <0.001 <0.001 <0.001 <0.003 0.004 <0.001 <0.05 F <1 F,M,X 19.32 0.00 71.31
01/20/15 <0.001 <0.001 <0.001 <0.003 <0.002 <0.001 <0.05 F <1 F,M,X 18.27 0.00 72.36
07/15/15 <0.002 <0.005 <0.005 <0.005 <0.005 <0.005 <0.240 <1.0 18.75 0.00 71.88
08/23/16 <0.002 <0.005 <0.005 <0.005 <0.005 <0.005 <0.050 <1.0 19.82 0.00 70.81
02/16/17 <0.005 <0.012 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0 18.97 0.00 71.66
08/30/17 <0.001 <0.001 <0.001 <0.003 <0.005 <0.001 <0.100 <0.100 18.74 0.00 71.89
02/20/18 <0.005 <0.012 <0.012 <0.012 <0.012 <0.005 <0.125 <1.0 18.94 0.00 71.69
08/06/18 <0.005 <0.012 <0.012 <0.012 <0.012 <0.005 <0.125 <1.0 19.49 0.00 71.14
01/24/19 <0.005 <0.012 <0.012 <0.012 <0.012 <0.005 <0.125 <1.0 19.16 0.00 71.47
07/18/19 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 <0.500 <0.100 17.88 0.00 72.75
01/22/20 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 <0.100 <0.100 18.42 0.00 72.21
06/18/20 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 J4 <0.00100 <0.100 <0.100 18.18 0.00 72.45
12/03/20 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.00105 <0.100 0.0323 J 18.97 0.00 71.66
09/28/21 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.000470 J <0.100 0.0972 J 19.52 0.00 71.11
03/14/22 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.00158 <0.100 0.0879 J 18.97 0.00 71.66
09/07/22 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 J4 0.000400 J <0.100 0.0828 J,J3 19.67 0.00 70.96
03/06/23 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.00164 <0.100 <0.100 18.94 0.00 71.69
01/22/24 18.94 0.00 71.69
86.02 06/27/24 18.26 0.00 67.76
Not Sampled (Free Product In Well)
Not Sampled (Not Included in Sampling Event)
Not Sampled (Free Product In Well)
Not Sampled (Free Product In Well)
Not Sampled (Free Product In Well)
Not Sampled (Not Included in Sampling Event)
Not Sampled (Not Included in Sampling Event)
Not Sampled (Free Product In Well)
Not Sampled (Free Product In Well)
Not Sampled (Free Product In Well)
Not Located, Asphalted Over
Not Sampled (Free Product In Well)
Not Sampled (Free Product In Well)
Not Sampled (Not Included in Sampling Event)
Not Sampled
Not Located, Covered by Asphalt
Not Sampled
4 of 8
TABLE 1
GROUNDWATER ANALYTICAL AND GROUNDWATER ELEVATION DATA SUMMARY
WESTERN TRANSMISSION
150 NORTH CARBONVILLE ROAD
PRICE, UTAH
SAMPLE ETHYL-NAPH-
LOCATION DATE BENZENE TOLUENE BENZENE XYLENES THALENE MTBE TPH-GRO TPH-DRO DTW FPT WTE
TOC (ft.)MM/DD/YY (mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(feet)(feet)(feet)
Initial Screening Levels 0.005 1.0 0.7 10 0.7 0.2 1.0 1.0
RBCA Tier 1 Levels 0.3 3.0 4.0 10 0.7 0.2 10 10
MW-10 09/16/24 18.93 0.00 67.09
Cont.12/09/24 19.05 0.00 66.97
03/27/25 18.95 0.00 67.07
MW-11 03/24/09 <0.005 <0.005 <0.005 <0.005 0.00012 J <0.005 <0.1 0.095 J 22.38 0.00 72.51
94.89 01/11/11 NM NM NM
05/23/11
09/26/11 <0.001 <0.001 <0.001 <0.003 <0.002 <0.001UJ <0.05 F <1 F,M,X 21.84 0.00 73.05
05/07/12 <0.001 <0.001 <0.001 <0.003 <0.002 <0.001 <0.05 F <1 F,M,X 21.77 0.00 73.12
09/17/12 <0.001 <0.001 <0.001 <0.003 <0.002 <0.001 <0.05 F <1 F,M,X 22.58 0.00 72.31
04/02/13 <0.001 <0.001 <0.001 <0.003 <0.002 <0.001 <0.05 F <1 F,M,X 22.37 0.00 72.52
01/27/14 <0.001 <0.001 <0.001 <0.003 0.005 <0.001 <0.05 F <1 F,M,X 22.97 0.00 71.92
08/13/14 <0.001 <0.001 <0.001 <0.003 <0.002 <0.001 <0.05 F <1 F,M,X 23.12 0.00 71.77
01/20/15 <0.001 <0.001 <0.001 <0.003 <0.002 <0.001 <0.05 F <1 F,M,X 22.03 0.00 72.86
07/15/15 <0.002 <0.005 <0.005 <0.005 <0.005 <0.005 <0.240 <1.0 22.58 0.00 72.31
08/23/16 <0.002 <0.005 <0.005 <0.005 <0.005 <0.005 <0.050 <1.0 23.70 0.00 71.19
02/16/17 <0.005 <0.012 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0 22.88 0.00 72.01
08/30/17 <0.001 <0.001 <0.001 <0.003 <0.005 <0.001 <0.100 <0.100 22.55 0.00 72.34
02/20/18 <0.005 <0.012 <0.012 <0.012 <0.012 <0.005 <0.125 <1.0 22.72 0.00 72.17
08/06/18 <0.005 <0.012 <0.012 <0.012 <0.012 <0.005 <0.125 <1.0 23.30 0.00 71.59
08/06/18*<0.005 <0.012 <0.012 <0.012 <0.012 <0.005 <0.125 <1.0 NA NA NA
01/24/19 <0.005 <0.012 <0.012 <0.012 <0.012 <0.005 <0.125 <1.0 22.95 0.00 71.94
07/18/19 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 <0.500 <0.100 21.70 0.00 73.19
01/22/20 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 <0.100 0.0632 J 22.19 0.00 72.70
06/18/20 0.000143 J <0.00100 <0.00100 <0.00300 <0.00500 J4 <0.00100 <0.100 <0.100 21.97 0.00 72.92
12/03/20 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 <0.100 <0.100 22.71 0.00 72.18
09/28/21 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 <0.100 0.115 23.38 0.00 71.51
03/14/22 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 <0.100 0.0899 J 22.78 0.00 72.11
09/07/22 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 J4 <0.00100 <0.100 0.0421 J,J3 23.55 0.00 71.34
03/06/23 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 <0.100 0.0656 J 22.78 0.00 72.11
01/22/24 22.77 0.00 72.12
90.17 06/27/24 22.09 0.00 68.08
09/16/24 22.74 0.00 67.43
12/09/24 22.87 0.00 67.30
03/27/25 22.78 0.00 67.39

MW-12 03/24/09 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.1 0.021 J 19.14 0.00 72.06
91.20 01/11/11 NM NM NM
TH-3 06/25/08 NM NM NM
NM 07/10/08 19.96 NM NM
03/24/09 NM NM NM
01/11/11
MW-13 01/11/11 0.0055 0.0025 0.0027 0.028 0.0012 <0.001 0.39 0.14 17.69 0.00 80.67
98.36 05/23/11 0.0026 <0.002 0.0017J 0.0027J <0.010 <0.002 0.144 J 0.610 16.58 0.00 81.78
09/26/11 0.004 <0.001 0.004 <0.003 <0.002 <0.001UJ 0.105 F <1 F,M,X 17.31 0.00 81.05
05/07/12 <0.001 <0.001 <0.001 <0.003 <0.002 <0.001 <0.05 F 0.114 F,M,X 17.74 0.00 80.62
09/17/12 <0.001 <0.001 0.001 <0.003 <0.002 <0.001 <0.05 F <1 F,M,X 18.18 0.00 80.18
04/02/13 0.073 <0.001 0.023 0.004 <0.002 <0.001 0.253 F <1 F,M,X 23.50 0.00 74.86
01/27/14 0.001 <0.001 0.003 <0.003 <0.002 <0.001 0.117 F <1 F,M,X 18.58 0.00 79.78
01/27/14*0.002 <0.001 0.004 <0.003 <0.002 <0.001 0.077 <1 F,M,X NA NA NA
08/13/14 <0.001 <0.001 0.001 <0.003 <0.002 <0.001 <0.05 F <1 F,M,X 18.30 0.00 80.06
01/20/15 0.001 <0.001 0.004 <0.003 <0.002 <0.001 <0.05 F <1 F,M,X 17.89 0.00 80.47
07/15/15 0.003 <0.005 0.006 <0.005 <0.005 <0.005 <0.240 <1.0 19.92 0.00 78.44
08/23/16 19.15 0.10 79.29
02/16/17 0.045 <0.012 0.059 <0.012 <0.012 <0.012 0.544 3.8 18.73 0.00 79.63
2/16/17*0.045 <0.012 0.063 <0.012 <0.012 <0.012 0.572 4.1 NA NA NA
08/30/17 0.00406 0.00116 0.0865 0.00851 <0.005 <0.001 2.93 3.26 18.30 0.00 80.06
02/20/18 <0.005 <0.012 0.069 <0.012 <0.012 <0.005 0.814 1.3 18.61 0.00 79.75
08/06/18 <0.005 <0.012 0.02 <0.012 <0.012 <0.005 1.29 <1.0 18.95 0.00 79.41
01/24/19 0.007 <0.012 0.106 0.018 <0.012 <0.005 7.43 8.6 18.75 0.00 79.61
07/18/19 <0.0100 <0.0100 <0.0100 <0.0300 <0.0500 <0.0100 <5.00 2.62 18.48 0.00 79.88
01/22/20 0.00136 <0.00100 0.0220 0.00144 J <0.0500 <0.00100 0.968 1.500 18.21 0.00 80.15
06/18/20 0.000857 J 0.000638 J 0.0106 0.000786 J 0.00155 J <0.00100 0.822 B,J 1.320 18.49 0.00 79.87
12/03/20 0.00325 0.000660 J 0.0177 0.00596 <0.00500 <0.00100 0.549 0.818 18.14 0.00 80.22
09/28/21 0.00827 0.00125 0.0321 0.00692 0.00191 J <0.00100 1.540 4.050 18.99 0.00 79.37
03/14/22 0.00140 <0.00100 0.00733 0.00104 J <0.00500 <0.00100 0.786 1.520 18.75 0.00 79.61
09/06/22 19.01 0.06 79.40
Not Located, Asphalted Over
Destroyed During Excavation
Not enough water to sample
Not Located, Asphalted Over
Not Sampled
Not Sampled
Located, Asphalted Over
Not Sampled (Free Product In Well)
Dry
Not Sampled (Free Product In Well)
Not Sampled
Not Sampled
Not Sampled
Not Sampled
Not Sampled
Dry
Not Sampled
5 of 8
TABLE 1
GROUNDWATER ANALYTICAL AND GROUNDWATER ELEVATION DATA SUMMARY
WESTERN TRANSMISSION
150 NORTH CARBONVILLE ROAD
PRICE, UTAH
SAMPLE ETHYL-NAPH-
LOCATION DATE BENZENE TOLUENE BENZENE XYLENES THALENE MTBE TPH-GRO TPH-DRO DTW FPT WTE
TOC (ft.)MM/DD/YY (mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(feet)(feet)(feet)
Initial Screening Levels 0.005 1.0 0.7 10 0.7 0.2 1.0 1.0
RBCA Tier 1 Levels 0.3 3.0 4.0 10 0.7 0.2 10 10
MW-13 03/06/23 0.00142 <0.00100 0.0323 0.00168 J 0.00182 J <0.00100 0.630 1.390 18.51 0.00 79.85
Cont.01/22/24 0.0116 0.00151 0.109 0.0101 0.00458 J <0.00100 1.610 1.680 18.70 0.00 79.66
93.67 06/28/24 0.00862 0.00140 0.0413 0.00451 0.00192 J <0.00100 J4 0.805 1.750 18.79 0.00 74.88
09/17/24 0.00469 0.000663 J 0.0295 0.00590 0.00111 J <0.00100 1.080 1.610 18.72 0.00 74.95
12/10/24 0.00432 J <0.00500 0.0465 0.00592 J <0.0250 <0.00500 1.030 1.660 18.48 0.00 75.19
03/27/25 0.000665 J <0.00100 0.0135 0.000392 J 0.00473 J <0.00100 0.479 1.230 18.54 0.00 75.13
MW-14 01/11/11 0.00035 0.00032J 0.0011 0.0056 0.0013 <0.001 0.22 0.1 18.64 0.00 80.69
99.33 05/23/11 <0.001 <0.002 <0.002 <0.004 <0.010 <0.002 <0.20 <0.42 18.55 0.00 80.78
09/26/11 <0.001 <0.001 <0.001 <0.003 <0.002 <0.001UJ <0.05 F <1 F,M,X 18.25 0.00 81.08
05/07/12 <0.001 <0.001 <0.001 <0.003 <0.002 <0.001 <0.05 F <1 F,M,X 18.30 0.00 81.03
09/17/12 <0.001 <0.001 <0.001 <0.003 <0.002 <0.001 <0.05 F <1 F,M,X 19.03 0.00 80.30
04/02/13 <0.001 <0.001 <0.001 <0.003 <0.002 <0.001 <0.05 F <1 F,M,X 19.18 0.00 80.15
01/27/14 <0.001 <0.001 <0.001 <0.003 <0.002 <0.001 <0.005 <1 F,M,X 19.51 0.00 79.82
08/13/14 <0.001 <0.001 <0.001 <0.003 <0.002 <0.001 <0.05 F <1 F,M,X 19.24 0.00 80.09
01/20/15 <0.001 <0.001 <0.001 <0.003 <0.002 <0.001 <0.05 F <1 F,M,X 18.86 0.00 80.47
07/15/15 <0.002 <0.005 <0.005 <0.005 <0.005 <0.005 <0.240 <1.0 19.89 0.00 79.44
08/23/16 <0.002 <0.005 0.005 <0.005 <0.005 <0.005 1.97 4.2 20.02 Trace 79.31
02/16/17 <0.005 <0.012 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0 19.70 0.00 79.63
08/30/17 <0.001 <0.001 <0.001 <0.003 <0.005 <0.001 0.460 0.633 19.25 0.00 80.08
02/20/18 <0.005 <0.012 <0.012 <0.012 <0.012 <0.005 <0.125 <1.0 19.60 0.00 79.73
08/06/18 <0.005 <0.012 <0.012 <0.012 <0.012 <0.005 <0.125 <1.0 19.88 0.00 79.45
01/24/19 <0.005 <0.012 <0.012 <0.012 <0.012 <0.005 <0.125 <1.0 19.70 0.00 79.63
07/18/19 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 <0.500 1.52 19.43 0.00 79.90
01/22/20 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 <0.100 0.0846 J 19.14 0.00 80.19
06/18/20 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.0961 B,J <0.100 19.43 0.00 79.90
12/03/20 <0.00100 <0.00100 <0.00100 0.000438 J <0.00500 <0.00100 <0.100 0.0335 J 19.07 0.00 80.26
09/28/21 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 <0.100 0.0480 J 19.93 0.00 79.40
03/14/22 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 <0.100 0.0849 J 19.68 0.00 79.65
09/07/22 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 J4 <0.00100 <0.100 0.0362 J,J3 19.91 0.00 79.42
03/06/23 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.0576 B,J <0.100 19.45 0.00 79.88
01/22/24 19.63 0.00 79.70
94.63 06/27/24 19.72 0.00 74.91
09/16/24 19.65 0.00 74.98
12/09/24 19.39 0.00 75.24
03/27/25 19.46 0.00 75.17
MW-15 01/11/11 0.310 0.230 0.440 1.230 0.062 <0.001 14 2.1 20.29 0.00 79.66
99.95 05/23/11 0.397 0.279 1.06 3.31 0.0594J <0.020 11.6 27.4 20.08 0.00 79.87
09/26/11 0.140 0.086 0.272 0.854 0.013 <0.005UJ 5.71 1.0 F, Jlo,M,X 19.80 0.00 80.15
05/07/12 0.420 0.127 0.413 1.27 0.033 <0.01 8.86 F 1.8 F,M,X 19.80 0.00 80.15
09/17/12 0.172 0.087 0.175 0.847 <0.01 <0.005 3.79 F <1 F,M,X 20.73 0.00 79.22
9/17/2012*0.174 0.098 0.197 0.952 <0.01 <0.005 3.34 F <1 F,M,X NA NA NA
04/02/13 0.176 0.093 0.324 0.942 0.031 <0.01 16.3 F <1 F,M,X 20.97 Trace 78.98
01/27/14 0.123 0.044 0.217 0.382 <0.01 <0.005 3.60 F 1.5 X,M,F 21.30 0.00 78.65
08/13/14 0.226 0.041 0.154 0.229 <0.01 <0.005 4.94 F <1 F,M,X 21.00 0.00 78.95
01/20/15 0.157 0.029 0.212 0.405 <0.04 <0.02 2.53 F 3.6 F,M,X 20.50 0.00 79.45
07/15/15 0.183 0.073 0.137 0.427 <0.005 <0.005 1.47 5.9 21.46 Trace 78.49
7/15/15*0.166 0.061 0.133 0.411 <0.005 <0.005 1.77 1.2 NA NA NA
08/23/16 23.18 1.74 78.08
02/16/17 21.70 0.17 78.38
08/30/17 0.102 0.00895 0.0442 0.0211 <0.005 <0.001 3.06 1.12 20.99 0.00 78.96
02/20/18 0.085 <0.012 0.032 0.112 <0.012 <0.005 1.57 2.1 21.27 0.00 78.68
08/06/18 21.62 0.02 78.35
01/24/19 0.219 0.013 0.165 0.149 <0.012 <0.005 2.20 2.2 21.55 0.00 78.40
1/24/2019*0.220 0.012 0.169 0.150 <0.012 <0.005 2.40 2.0 NA NA NA
07/18/19 0.156 0.0304 0.127 0.295 <0.125 <0.0250 <12.5 6.29 20.85 0.00 79.10
01/22/20 0.0360 0.00235 0.167 0.114 <0.00500 <0.00100 3.080 2.140 20.61 0.00 79.34
06/18/20 0.0318 0.00187 J 0.131 0.0957 <0.00500 <0.00100 2.360 J 1.890 20.89 0.00 79.06
12/03/20 0.0272 0.00306 0.0515 0.0428 <0.00500 <0.00100 1.300 1.040 20.73 0.00 79.22
09/28/21 0.120 0.0245 0.0556 0.253 <0.0250 <0.00500 4.630 1.130 21.68 0.00 78.27
03/14/22 0.0110 0.000476 J 0.000896 J 0.0155 <0.00500 <0.00100 1.670 1.390 21.38 0.00 78.57
09/07/22 0.0918 0.0110 0.0431 0.117 0.00106 J, J4 <0.00100 1.910 1.030 21.76 0.00 78.19
03/06/23 0.0266 0.00114 0.00515 0.0420 <0.00500 <0.00100 1.460 1.890 21.25 0.00 78.70
01/22/24 0.0523 0.00393 0.0243 0.137 0.00148 J <0.00100 2.440 1.350 21.44 0.00 78.51
95.26 06/28/24 0.0344 0.00269 0.00423 0.0954 <0.00500 <0.00100 J4 1.280 1.410 21.39 0.00 73.87
09/17/24 0.0690 0.01070 0.0350 0.149 0.00105 J <0.00100 1.410 1.180 21.38 0.00 73.88
12/10/24 0.0243 0.00277 J 0.0137 0.0452 <0.0250 <0.00500 0.992 1.090 21.20 0.00 74.06
Not Sampled (Free Product In Well)
Not Sampled (Free Product In Well)
Not Sampled
Not Sampled (Free Product In Well)
Not Sampled
Not Sampled
Not Sampled
Not Sampled
6 of 8
TABLE 1
GROUNDWATER ANALYTICAL AND GROUNDWATER ELEVATION DATA SUMMARY
WESTERN TRANSMISSION
150 NORTH CARBONVILLE ROAD
PRICE, UTAH
SAMPLE ETHYL-NAPH-
LOCATION DATE BENZENE TOLUENE BENZENE XYLENES THALENE MTBE TPH-GRO TPH-DRO DTW FPT WTE
TOC (ft.)MM/DD/YY (mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(feet)(feet)(feet)
Initial Screening Levels 0.005 1.0 0.7 10 0.7 0.2 1.0 1.0
RBCA Tier 1 Levels 0.3 3.0 4.0 10 0.7 0.2 10 10
MW-15 03/28/25 0.00601 0.000574 J 0.000883 J 0.0224 <0.00500 <0.00100 0.735 1.210 21.33 0.00 73.93
Cont.
MW-16 08/13/14 <0.001 <0.001 <0.001 <0.003 <0.002 <0.001 <0.05 F <1 F,M,X 23.55 0.00 71.50
95.05 01/20/15 <0.001 <0.001 <0.001 <0.003 <0.002 <0.001 <0.05 F <1 F,M,X 22.54 0.00 72.51
07/15/15 <0.002 <0.005 <0.005 <0.005 <0.005 <0.005 <0.240 <1.0 22.97 0.00 72.08
08/23/16 <0.002 <0.005 <0.005 <0.005 <0.005 <0.005 <0.050 <1.0 23.70 0.00 71.35
02/16/17 <0.005 <0.012 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0 23.29 0.00 71.76
08/30/17 <0.001 <0.001 <0.001 <0.003 <0.005 <0.001 <0.100 <0.100 22.98 0.00 72.07
02/20/18 <0.005 <0.012 <0.012 <0.012 <0.012 <0.005 <0.125 <1.0 23.18 0.00 71.87
08/06/18 <0.005 <0.012 <0.012 <0.012 <0.012 <0.005 <0.125 <1.0 23.71 0.00 71.34
01/24/19 <0.005 <0.012 <0.012 <0.012 <0.012 <0.005 <0.125 <1.0 23.39 0.00 71.66
07/18/19 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 <0.500 <0.100 22.12 0.00 72.93
01/22/20 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.0498 B,J 0.0677 J 22.65 0.00 72.40
06/18/20 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 <0.100 <0.100 22.41 0.00 72.64
12/03/20 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 <0.100 0.0468 J 23.18 0.00 71.87
09/28/21 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 <0.100 0.0922 J 23.77 0.00 71.28
03/14/22 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 <0.100 0.0657 J 23.20 0.00 71.85
09/07/22 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 J4 <0.00100 <0.100 0.0339 J 23.93 0.00 71.12
03/06/23 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.0682 B,J <0.100 23.21 0.00 71.84
01/22/24 23.19 0.00 71.86
90.45 06/27/24 22.52 0.00 67.93
09/17/24 23.15 0.00 67.30
12/09/24 23.29 0.00 67.16
03/27/25 23.20 0.00 67.25
MW-17 08/13/14 0.055 <0.01 0.158 0.194 0.053 <0.01 13.0 F 7.5 F,M,X 22.87 0.00 71.39
94.26 01/20/15 0.014 <0.001 0.010 0.005 <0.002 <0.001 5.30 F 5.6 F,M,X 21.85 0.00 72.41
07/15/15 0.008 <0.005 0.006 0.005 <0.005 <0.005 <0.240 <1.0 22.30 0.00 71.96
08/23/16 0.109 <0.005 0.111 0.034 0.006 <0.005 1.64 1.4 23.36 0.00 70.90
08/23/16*0.045 <0.005 0.044 0.016 <0.005 <0.005 0.651 <1.0 NA NA NA
02/16/17 0.013 <0.012 0.024 0.027 <0.012 <0.012 0.716 1.8 22.59 0.00 71.67
08/30/17 0.0113 <0.001 0.0119 0.0171 <0.005 <0.001 1.16 0.383 22.29 0.00 71.97
02/20/18 <0.005 <0.012 <0.012 <0.012 <0.012 <0.005 <0.125 <1.0 22.50 0.00 71.76
08/06/18 0.031 <0.012 0.016 0.015 <0.012 <0.005 0.452 <1.0 23.01 0.00 71.25
01/24/19 <0.005 <0.012 <0.012 <0.012 <0.012 <0.005 0.148 <1.0 22.70 0.00 71.56
07/18/19 0.0602 <0.00100 0.00751 0.00597 <0.00500 <0.00100 0.597 B 0.962 21.44 0.00 72.82
01/22/20 0.0012 <0.00100 0.000778 J 0.00211 J <0.00500 <0.00100 0.281 B 0.0892 J 21.98 0.00 72.28
06/18/20 <0.00100 <0.00100 <0.00100 0.000207 J <0.00500 <0.00100 0.232 0.262 21.74 0.00 72.52
6/18/2020 *<0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.215 0.220 NA NA NA
12/03/20 0.000830 J 0.000448 J 0.000599 J 0.00205 J <0.00500 <0.00100 0.172 0.235 22.52 0.00 71.74
09/28/21 0.103 Q 0.00353 0.0856 0.0966 0.00947 <0.00100 1.130 7.710 23.07 0.00 71.19
03/14/22 0.000167 J <0.00100 <0.00100 0.000261 J <0.00500 <0.00100 0.197 B 0.265 22.52 0.00 71.74
09/07/22 0.000253 J <0.00100 0.000226 J 0.000275 J <0.00500 C4 <0.00100 <0.500 0.198 23.22 0.00 71.04
03/06/23 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.121 B 0.144 22.52 0.00 71.74
01/22/24 0.000540 J <0.00100 0.000202 J 0.000282 J <0.00500 <0.00100 0.178 0.266 B 22.50 0.00 71.76
89.63 06/28/24 0.000260 J <0.00100 <0.00100 0.000515 J <0.00500 <0.00100 J4 0.138 0.310 21.84 0.00 67.79
09/27/24 0.000246 J <0.00100 0.000557 J 0.000765 J <0.00500 <0.00100 0.196 B 0.211 22.46 0.00 67.17
12/10/24 0.00194 <0.00100 0.00212 0.00265 J <0.00500 <0.00100 0.223 B 0.265 B 22.63 0.00 67.00
03/28/25 0.000179 J <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.0870 J 0.204 22.52 0.00 67.11
MW-18 08/13/14 <0.001 <0.001 <0.001 <0.003 <0.002 <0.001 <0.05 F <1 F,M,X 21.89 0.00 71.13
93.02 01/20/15 <0.001 <0.001 <0.001 <0.003 <0.002 <0.001 <0.05 F <1 F,M,X 20.93 0.00 72.09
07/15/15 <0.002 <0.005 <0.005 <0.005 <0.005 <0.005 <0.240 <1.0 21.31 0.00 71.71
08/23/16 <0.002 <0.005 <0.005 <0.005 <0.005 <0.005 <0.050 <1.0 22.37 0.00 70.65
02/16/17 <0.005 <0.012 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0 21.59 0.00 71.43
08/30/17 <0.001 <0.001 <0.001 <0.003 <0.005 <0.001 <0.100 0.273B 21.33 0.00 71.69
02/20/18 <0.005 <0.012 <0.012 <0.012 <0.012 <0.005 <0.125 <1.0 21.53 0.00 71.49
08/06/18 <0.005 <0.012 <0.012 <0.012 <0.012 <0.005 <0.125 <1.0 22.03 0.00 70.99
01/24/19 <0.005 <0.012 <0.012 <0.012 <0.012 <0.005 <0.125 <1.0 21.73 0.00 71.29
07/18/19 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 <0.500 0.280 20.50 0.00 72.52
01/22/20 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.0680 B,J 0.0580 J 21.05 0.00 71.97
06/18/20 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.0422 J 0.299 20.79 0.00 72.23
12/03/20 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.0392 J 0.176 21.58 0.00 71.44
09/28/21 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.0366 J 0.306 22.08 0.00 70.94
03/14/22 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.0363 BJ 0.0885 J 21.54 0.00 71.48
09/07/22 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 J4 <0.00100 <0.100 0.113 22.20 0.00 70.82
Not Sampled
Not Sampled
Not Sampled
Not Sampled
Not Sampled
7 of 8
TABLE 1
GROUNDWATER ANALYTICAL AND GROUNDWATER ELEVATION DATA SUMMARY
WESTERN TRANSMISSION
150 NORTH CARBONVILLE ROAD
PRICE, UTAH
SAMPLE ETHYL-NAPH-
LOCATION DATE BENZENE TOLUENE BENZENE XYLENES THALENE MTBE TPH-GRO TPH-DRO DTW FPT WTE
TOC (ft.)MM/DD/YY (mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(feet)(feet)(feet)
Initial Screening Levels 0.005 1.0 0.7 10 0.7 0.2 1.0 1.0
RBCA Tier 1 Levels 0.3 3.0 4.0 10 0.7 0.2 10 10
MW-18 03/06/23 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.0433 B,J 0.0436 J 21.53 0.00 71.49
Cont.01/22/24 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.0547 J 0.142 B 21.51 0.00 71.51
88.43 06/28/24 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 J4 <0.100 0.0628 J 20.85 0.00 67.58
09/17/24 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.0385 B,J 0.152 21.48 0.00 66.95
12/10/24 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.0584 B,J 0.185 21.63 0.00 66.80
03/28/25 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 <0.100 0.230 21.55 0.00 66.88
MW-19 08/13/14 0.112 0.031 0.311 1.19 0.054 <0.005 4.18 F <1 F,M,X 24.05 0.00 71.92
95.97 8/13/14*0.117 0.033 0.324 1.28 0.055 <0.005 3.70 F <1 F,M,X NA NA NA
01/20/15 0.161 <0.001 0.224 0.013 0.125 <0.001 1.75 F 1.0 F,M,X 23.75 0.00 72.22
1/20/15*0.165 <0.001 0.228 0.013 0.123 <0.001 1.78 F 2.2 F,M,X NA NA NA
07/15/15 0.041 <0.005 0.066 0.009 0.022 <0.005 0.521 3.9 24.12 0.00 71.85
08/23/16 0.041 <0.005 0.014 0.019 0.005 <0.005 0.521 1.6 25.17 0.00 70.80
02/16/17 0.067 <0.012 0.028 0.062 0.024 <0.012 0.638 1.6 24.41 0.00 71.56
08/30/17 0.236 0.0169 0.115 0.248 0.0768 <0.001 3.30 2.60 24.10 0.00 71.87
8/30/17*0.233 0.0164 0.111 0.240 0.08 <0.001 3.21 2.66 NA NA NA
02/20/18 0.189 0.020 0.115 0.323 0.098 <0.005 1.95 2.2 24.37 0.00 71.60
08/06/18 0.056 <0.012 0.029 0.062 0.017 <0.005 0.560 1.0 24.85 0.00 71.12
01/24/19 0.174 0.018 0.106 0.193 0.068 <0.005 1.59 1.9 24.56 0.00 71.41
07/18/19 0.126 0.00714 0.0671 0.0480 0.0437 <0.00100 0.591 B 1.43 23.30 0.00 72.67
01/22/20 0.0182 0.00131 0.00958 0.00811 0.00558 <0.00100 0.492 B 0.844 23.86 0.00 72.11
06/18/20 0.0558 0.00373 0.0606 0.0495 0.0342 <0.00100 0.643 2.240 23.62 0.00 72.35
12/03/20 0.0124 0.00107 0.00538 0.00422 0.00121 J <0.00100 0.336 1.370 24.39 0.00 71.58
09/28/21 0.165 Q 0.000696 J 0.128 Q 0.000733 J 0.0339 Q <0.00100 1.970 2.140 24.88 0.00 71.09
03/14/22 0.00784 0.000528 J 0.00636 0.00368 <0.00500 <0.00100 0.405 0.965 24.38 0.00 71.59
09/07/22 0.0135 0.00104 0.0104 0.01040 <0.00500 C4 <0.00100 0.338 J 1.140 25.03 0.00 70.94
03/06/23 0.00271 <0.00100 0.00239 0.00288 J <0.00500 <0.00100 0.244 B 0.701 24.37 0.00 71.60
01/22/24 24.35 0.00 71.62
91.28 06/27/24 23.71 0.00 67.57
09/17/24 24.29 0.00 66.99
12/09/24 24.48 0.00 66.80
03/27/25 24.38 0.00 66.90
MW-20 01/23/24 0.00482 0.00296 0.00117 0.00389 <0.00500 <0.00100 0.0982 J 0.147 B 25.02 0.00 79.81
104.83 06/28/24 0.000570 J <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 J4 <0.100 0.199 25.13 0.00 74.87
100.00 09/17/24 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 <0.100 0.157 25.08 0.00 74.92
12/10/24 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 <0.100 0.290 24.80 0.00 75.20
03/28/25 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 <0.100 0.359 24.86 0.00 75.14
MW-21 01/23/24 0.00250 0.00199 0.000945 J 0.00225 J <0.00500 <0.00100 0.0653 J 0.258 B 22.71 0.00 79.73
102.44 06/27/24 22.82 0.00 74.86
97.68 09/17/24 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.0520 J 2.360 22.75 0.00 74.93
12/10/24 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.0968 B,J 3.720 22.48 0.00 75.20
03/28/25 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.0734 J 5.090 22.54 0.00 75.14
MW-22 01/23/24 <0.00100 <0.00100 <0.00100 0.000294 J <0.00500 <0.00100 <0.100 1.520 22.52 0.00 79.80
102.32 06/27/24 22.64 0.00 74.85
97.49 09/17/24 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 <0.100 1.320 22.58 0.00 74.91
12/10/24 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.0368 B,J 1.310 22.31 0.00 75.18
03/28/25 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 <0.100 0.911 22.37 0.00 75.12
MW-23 01/23/24 0.000111 J <0.00100 <0.00100 0.000286 J <0.00500 <0.00100 <0.100 2.160 B 15.68 0.00 79.69
95.37 06/27/24 15.78 0.00 74.83
90.61 09/17/24 <0.00100 0.000328 J <0.00100 <0.00300 <0.00500 <0.00100 <0.100 1.410 15.73 0.00 74.88
12/10/24 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.0514 B,J 1.800 15.47 0.00 75.14
03/28/25 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 <0.100 1.690 15.53 0.00 75.08
Not Sampled
Not Sampled
Not Sampled
Not Sampled
Not Sampled
Not Sampled
Not Sampled
Not Sampled
8 of 8
TABLE 1
GROUNDWATER ANALYTICAL AND GROUNDWATER ELEVATION DATA SUMMARY
WESTERN TRANSMISSION
150 NORTH CARBONVILLE ROAD
PRICE, UTAH
SAMPLE ETHYL-NAPH-
LOCATION DATE BENZENE TOLUENE BENZENE XYLENES THALENE MTBE TPH-GRO TPH-DRO DTW FPT WTE
TOC (ft.)MM/DD/YY (mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(feet)(feet)(feet)
Initial Screening Levels 0.005 1.0 0.7 10 0.7 0.2 1.0 1.0
RBCA Tier 1 Levels 0.3 3.0 4.0 10 0.7 0.2 10 10
MW-24 01/23/24 0.000458 J <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 <0.100 0.0777 B,J 17.09 0.00 77.89
94.98 06/28/24 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 J4 <0.100 0.0290 J 17.09 0.00 73.18
90.27 09/17/24 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 <0.100 0.0787 J 17.12 0.00 73.15
12/10/24 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 <0.100 <0.100 16.94 0.00 73.33
03/28/25 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 <0.100 <0.100 17.06 0.00 73.21
Notes:
Jlo = Estimated value. Result may be biased low.* = Field Duplicate NS = Not Sampled mg/L = Milligrams per Liter
Jhi = Estimated value. Result may be biased high.NA = Not Applicable NM = Not Measured FPT = Free Product Thickness
Bold values indicate an exceedence of the Tier I Screening Level in the on-site wells M = Micro-extraction used for TPH-DRO
Red values indicate an exceedence of the Initial Screening Levels in the off-site wells X = Hexane used for extraction
J = Estimated value. Results may be biased low. Surrogate recovery below limits.RBCA = Risk Based Corrective Action
UJ = Analyte not detected. Spike or surrogate recovery below limits.F = No dual column confirmation
R-06 = To protect the integerty of the insturment, the sample required dilution due to the presence of high levels of non-target analytes resulting in elevated reporting limit
B = The same analyte is found in the associated blank
J4 = The associated batch QC was outside the established quality control range for accuracy.
Q = Sample was prepared and/or analyzed past the holding time as defined in the method. Concentrations should be considered minimum values.
J3 = The associated batch QC was outside the established quality control range for precision
C4 = The reported concentration is an estimate. The continuing calibration standard associated with this data responded low.
Data is likely to show a low bias concerning the result
C5 = The reported concentration is an estimate. The continuing calibration standard associated with this data responded high.
Data is likely to show a high bias concerning the result

APPENDIX A

LABORATORY ANALYTICAL REPORT
ANALYTICAL REPORT
April 10, 2025
One Atlas
Sample Delivery Group:L1841408
Samples Received:03/29/2025
Project Number:
Description:Western Transmission
Report To:Jim Coletta
1775 South 4130 West, Ste A
Salt Lake City, UT 84104
Entire Report Reviewed By:
April 10, 2025
[Preliminary Report]
Daphne Richards
Project Manager
Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be
reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace
Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and
ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided,
and as the samples are received.
Pace Analytical National
12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 mydata.pacelabs.com
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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April 10, 2025
Daphne Richards
Project Manager
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TABLE OF CONTENTS
Cp: Cover Page 1
Tc: Table of Contents 2
Ss: Sample Summary 3
Cn: Case Narrative 6
Sr: Sample Results 7
MW-3 L1841408-01 7
MW-6 L1841408-02 8
MW-7 L1841408-03 9
MW-8 L1841408-04 10
MW-13 L1841408-05 11
MW-15 L1841408-06 12
MW-17 L1841408-07 13
MW-18 L1841408-08 14
MW-20 L1841408-09 15
MW-21 L1841408-10 16
MW-22 L1841408-11 17
MW-23 L1841408-12 18
MW-24 L1841408-13 19
FIELD BLANK L1841408-14 20
TRIP BLANK L1841408-15 21
Qc: Quality Control Summary 22
Volatile Organic Compounds (GC) by Method 8015D/GRO 22
Volatile Organic Compounds (GC/MS) by Method 8260B 27
Semi-Volatile Organic Compounds (GC) by Method 8015D 30
Gl: Glossary of Terms 32
Al: Accreditations & Locations 33
Sc: Sample Chain of Custody 34
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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SAMPLE SUMMARY
Collected by Collected date/time Received date/time
MW-3 L1841408-01 GW Olaf Questereit 03/28/25 10:45 03/29/25 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2481579 1 04/02/25 18:44 04/02/25 18:44 DSS Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2482300 1 04/03/25 00:50 04/03/25 00:50 KST Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015D WG2481346 1 04/02/25 07:44 04/03/25 00:17 DMG Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-6 L1841408-02 GW Olaf Questereit 03/28/25 11:15 03/29/25 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2482965 1 04/04/25 18:48 04/04/25 18:48 CDD Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2482300 1 04/03/25 01:10 04/03/25 01:10 KST Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015D WG2481346 1 04/02/25 07:44 04/03/25 04:38 DMG Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-7 L1841408-03 GW Olaf Questereit 03/28/25 11:00 03/29/25 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2481579 1 04/02/25 19:05 04/02/25 19:05 DSS Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2482300 1 04/03/25 01:29 04/03/25 01:29 KST Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015D WG2481346 1 04/02/25 07:44 04/03/25 00:37 DMG Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-8 L1841408-04 GW Olaf Questereit 03/28/25 08:30 03/29/25 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2481579 10 04/02/25 20:09 04/02/25 20:09 DSS Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2483795 50 04/05/25 14:16 04/05/25 14:16 ACG Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2485835 50 04/09/25 01:58 04/09/25 01:58 DYW Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015D WG2481346 1 04/02/25 07:44 04/03/25 04:58 DMG Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-13 L1841408-05 GW Olaf Questereit 03/28/25 10:30 03/29/25 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2482770 1 04/03/25 20:33 04/03/25 20:33 AEB Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2485835 1 04/09/25 02:19 04/09/25 02:19 DYW Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015D WG2481346 1 04/02/25 07:44 04/03/25 05:18 DMG Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-15 L1841408-06 GW Olaf Questereit 03/28/25 10:15 03/29/25 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2482770 1 04/03/25 20:57 04/03/25 20:57 AEB Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2485835 1 04/09/25 02:40 04/09/25 02:40 DYW Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015D WG2481346 1 04/02/25 07:44 04/03/25 05:38 DMG Mt. Juliet, TN
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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SAMPLE SUMMARY
Collected by Collected date/time Received date/time
MW-17 L1841408-07 GW Olaf Questereit 03/28/25 08:15 03/29/25 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2482770 1 04/03/25 21:20 04/03/25 21:20 AEB Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2482300 1 04/03/25 01:49 04/03/25 01:49 KST Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015D WG2481346 1 04/02/25 07:44 04/03/25 11:01 MAA Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-18 L1841408-08 GW Olaf Questereit 03/28/25 08:00 03/29/25 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2482770 1 04/03/25 21:43 04/03/25 21:43 AEB Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2482300 1 04/03/25 02:08 04/03/25 02:08 KST Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015D WG2481346 1 04/02/25 07:44 04/03/25 10:41 MAA Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-20 L1841408-09 GW Olaf Questereit 03/28/25 10:00 03/29/25 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2482770 1 04/03/25 22:06 04/03/25 22:06 AEB Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2482300 1 04/03/25 02:27 04/03/25 02:27 KST Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015D WG2481346 1 04/02/25 07:44 04/03/25 01:37 DMG Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-21 L1841408-10 GW Olaf Questereit 03/28/25 09:45 03/29/25 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2482770 1 04/03/25 22:29 04/03/25 22:29 AEB Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2482300 1 04/03/25 02:47 04/03/25 02:47 KST Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015D WG2481774 1 04/02/25 16:47 04/03/25 16:40 MAA Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-22 L1841408-11 GW Olaf Questereit 03/28/25 09:30 03/29/25 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2482770 1 04/03/25 22:52 04/03/25 22:52 AEB Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2482300 1 04/03/25 03:06 04/03/25 03:06 KST Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015D WG2481774 1 04/02/25 16:47 04/03/25 18:13 MAA Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-23 L1841408-12 GW Olaf Questereit 03/28/25 09:15 03/29/25 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2485027 1 04/08/25 01:01 04/08/25 01:01 NCD Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2483795 1 04/05/25 11:02 04/05/25 11:02 ACG Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015D WG2481774 1 04/02/25 16:47 04/03/25 17:20 MAA Mt. Juliet, TN
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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SAMPLE SUMMARY
Collected by Collected date/time Received date/time
MW-24 L1841408-13 GW Olaf Questereit 03/28/25 09:00 03/29/25 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2485027 1 04/08/25 01:25 04/08/25 01:25 NCD Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2483795 1 04/05/25 11:21 04/05/25 11:21 ACG Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015D WG2481774 1 04/02/25 16:47 04/03/25 18:33 MAA Mt. Juliet, TN
Collected by Collected date/time Received date/time
FIELD BLANK L1841408-14 GW Olaf Questereit 03/28/25 08:45 03/29/25 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2482251 1 04/03/25 00:45 04/03/25 00:45 CDD Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2482300 1 04/02/25 23:32 04/02/25 23:32 KST Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015D WG2481774 1 04/02/25 16:47 04/03/25 18:53 MAA Mt. Juliet, TN
Collected by Collected date/time Received date/time
TRIP BLANK L1841408-15 GW Olaf Questereit 03/28/25 00:00 03/29/25 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 8260B WG2483795 1 04/05/25 10:24 04/05/25 10:24 ACG Mt. Juliet, TN
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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CASE NARRATIVE
All sample aliquots were received at the correct temperature, in the proper containers, with the
appropriate preservatives, and within method specified holding times, unless qualified or notated within
the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples
have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control
are within established criteria except where addressed in this case narrative, a non-conformance form
or properly qualified within the sample results. By my digital signature below, I affirm to the best of my
knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the
quality of the data have been identified by the laboratory, and no information or data have been
knowingly withheld that would affect the quality of the data.
[Preliminary Report]
Daphne Richards
Project Manager
Sample Delivery Group (SDG) Narrative
pH outside of method requirement.
Lab Sample ID Project Sample ID Method
L1841408-04 MW-8 8260B
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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Daphne Richards
Project Manager
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 01
L1841408
MW-3
Collected date/time: 03/28/25 10:45
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) Low Fraction 55.2 J 31.4 100 1 04/02/2025 18:44 WG2481579
(S)
a,a,a-Trifluorotoluene(FID)99.9 78.0-120 04/02/2025 18:44 WG2481579
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene U 0.0941 1.00 1 04/03/2025 00:50 WG2482300
Toluene U 0.278 1.00 1 04/03/2025 00:50 WG2482300
Ethylbenzene U 0.137 1.00 1 04/03/2025 00:50 WG2482300
Total Xylenes U 0.174 3.00 1 04/03/2025 00:50 WG2482300
Methyl tert-butyl ether U 0.101 1.00 1 04/03/2025 00:50 WG2482300
Naphthalene U 1.00 5.00 1 04/03/2025 00:50 WG2482300
(S) Toluene-d8 112 80.0-120 04/03/2025 00:50 WG2482300
(S) 4-Bromofluorobenzene 97.1 77.0-126 04/03/2025 00:50 WG2482300
(S) 1,2-Dichloroethane-d4 117 70.0-130 04/03/2025 00:50 WG2482300
Semi-Volatile Organic Compounds (GC) by Method 8015D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction 1500 60.5 100 1 04/03/2025 00:17 WG2481346
(S) o-Terphenyl 84.2 52.0-156 04/03/2025 00:17 WG2481346
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 02
L1841408
MW-6
Collected date/time: 03/28/25 11:15
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) Low Fraction 546 31.4 100 1 04/04/2025 18:48 WG2482965
(S)
a,a,a-Trifluorotoluene(FID)94.0 78.0-120 04/04/2025 18:48 WG2482965
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene 1.30 0.0941 1.00 1 04/03/2025 01:10 WG2482300
Toluene U 0.278 1.00 1 04/03/2025 01:10 WG2482300
Ethylbenzene 11.9 0.137 1.00 1 04/03/2025 01:10 WG2482300
Total Xylenes 0.870 J 0.174 3.00 1 04/03/2025 01:10 WG2482300
Methyl tert-butyl ether U 0.101 1.00 1 04/03/2025 01:10 WG2482300
Naphthalene 1.47 J 1.00 5.00 1 04/03/2025 01:10 WG2482300
(S) Toluene-d8 111 80.0-120 04/03/2025 01:10 WG2482300
(S) 4-Bromofluorobenzene 94.4 77.0-126 04/03/2025 01:10 WG2482300
(S) 1,2-Dichloroethane-d4 118 70.0-130 04/03/2025 01:10 WG2482300
Semi-Volatile Organic Compounds (GC) by Method 8015D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction 1510 60.5 100 1 04/03/2025 04:38 WG2481346
(S) o-Terphenyl 88.4 52.0-156 04/03/2025 04:38 WG2481346
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 03
L1841408
MW-7
Collected date/time: 03/28/25 11:00
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) Low Fraction 100 31.4 100 1 04/02/2025 19:05 WG2481579
(S)
a,a,a-Trifluorotoluene(FID)100 78.0-120 04/02/2025 19:05 WG2481579
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene U 0.0941 1.00 1 04/03/2025 01:29 WG2482300
Toluene U 0.278 1.00 1 04/03/2025 01:29 WG2482300
Ethylbenzene U 0.137 1.00 1 04/03/2025 01:29 WG2482300
Total Xylenes 0.177 J 0.174 3.00 1 04/03/2025 01:29 WG2482300
Methyl tert-butyl ether U 0.101 1.00 1 04/03/2025 01:29 WG2482300
Naphthalene U 1.00 5.00 1 04/03/2025 01:29 WG2482300
(S) Toluene-d8 113 80.0-120 04/03/2025 01:29 WG2482300
(S) 4-Bromofluorobenzene 96.7 77.0-126 04/03/2025 01:29 WG2482300
(S) 1,2-Dichloroethane-d4 115 70.0-130 04/03/2025 01:29 WG2482300
Semi-Volatile Organic Compounds (GC) by Method 8015D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction 2550 60.5 100 1 04/03/2025 00:37 WG2481346
(S) o-Terphenyl 102 52.0-156 04/03/2025 00:37 WG2481346
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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SAMPLE RESULTS - 04
L1841408
MW-8
Collected date/time: 03/28/25 08:30
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) Low Fraction 9300 314 1000 10 04/02/2025 20:09 WG2481579
(S)
a,a,a-Trifluorotoluene(FID)97.6 78.0-120 04/02/2025 20:09 WG2481579
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene 1580 4.71 50.0 50 04/05/2025 14:16 WG2483795
Toluene 20.7 J 13.9 50.0 50 04/05/2025 14:16 WG2483795
Ethylbenzene 1150 6.85 50.0 50 04/05/2025 14:16 WG2483795
Total Xylenes 464 8.70 150 50 04/05/2025 14:16 WG2483795
Methyl tert-butyl ether U 5.05 50.0 50 04/05/2025 14:16 WG2483795
Naphthalene 258 C5 50.0 250 50 04/09/2025 01:58 WG2485835
(S) Toluene-d8 113 80.0-120 04/05/2025 14:16 WG2483795
(S) Toluene-d8 105 80.0-120 04/09/2025 01:58 WG2485835
(S) 4-Bromofluorobenzene 98.1 77.0-126 04/05/2025 14:16 WG2483795
(S) 4-Bromofluorobenzene 101 77.0-126 04/09/2025 01:58 WG2485835
(S) 1,2-Dichloroethane-d4 118 70.0-130 04/05/2025 14:16 WG2483795
(S) 1,2-Dichloroethane-d4 116 70.0-130 04/09/2025 01:58 WG2485835
Semi-Volatile Organic Compounds (GC) by Method 8015D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction 5800 60.5 100 1 04/03/2025 04:58 WG2481346
(S) o-Terphenyl 93.7 52.0-156 04/03/2025 04:58 WG2481346
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1841408 04/10/25 08:16 10 of 35
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1841408 04/10/25 08:16 10 of 35
SAMPLE RESULTS - 05
L1841408
MW-13
Collected date/time: 03/28/25 10:30
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) Low Fraction 479 31.4 100 1 04/03/2025 20:33 WG2482770
(S)
a,a,a-Trifluorotoluene(FID)84.2 78.0-120 04/03/2025 20:33 WG2482770
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene 0.665 J 0.0941 1.00 1 04/09/2025 02:19 WG2485835
Toluene U 0.278 1.00 1 04/09/2025 02:19 WG2485835
Ethylbenzene 13.5 0.137 1.00 1 04/09/2025 02:19 WG2485835
Total Xylenes 0.392 J 0.174 3.00 1 04/09/2025 02:19 WG2485835
Methyl tert-butyl ether U 0.101 1.00 1 04/09/2025 02:19 WG2485835
Naphthalene 4.73 J 1.00 5.00 1 04/09/2025 02:19 WG2485835
(S) Toluene-d8 105 80.0-120 04/09/2025 02:19 WG2485835
(S) 4-Bromofluorobenzene 103 77.0-126 04/09/2025 02:19 WG2485835
(S) 1,2-Dichloroethane-d4 116 70.0-130 04/09/2025 02:19 WG2485835
Semi-Volatile Organic Compounds (GC) by Method 8015D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction 1230 60.5 100 1 04/03/2025 05:18 WG2481346
(S) o-Terphenyl 84.7 52.0-156 04/03/2025 05:18 WG2481346
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1841408 04/10/25 08:16 11 of 35
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1841408 04/10/25 08:16 11 of 35
SAMPLE RESULTS - 06
L1841408
MW-15
Collected date/time: 03/28/25 10:15
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) Low Fraction 735 31.4 100 1 04/03/2025 20:57 WG2482770
(S)
a,a,a-Trifluorotoluene(FID)87.6 78.0-120 04/03/2025 20:57 WG2482770
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene 6.01 0.0941 1.00 1 04/09/2025 02:40 WG2485835
Toluene 0.574 J 0.278 1.00 1 04/09/2025 02:40 WG2485835
Ethylbenzene 0.883 J 0.137 1.00 1 04/09/2025 02:40 WG2485835
Total Xylenes 22.4 0.174 3.00 1 04/09/2025 02:40 WG2485835
Methyl tert-butyl ether U 0.101 1.00 1 04/09/2025 02:40 WG2485835
Naphthalene U 1.00 5.00 1 04/09/2025 02:40 WG2485835
(S) Toluene-d8 104 80.0-120 04/09/2025 02:40 WG2485835
(S) 4-Bromofluorobenzene 101 77.0-126 04/09/2025 02:40 WG2485835
(S) 1,2-Dichloroethane-d4 114 70.0-130 04/09/2025 02:40 WG2485835
Semi-Volatile Organic Compounds (GC) by Method 8015D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction 1210 60.5 100 1 04/03/2025 05:38 WG2481346
(S) o-Terphenyl 85.3 52.0-156 04/03/2025 05:38 WG2481346
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1841408 04/10/25 08:16 12 of 35
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1841408 04/10/25 08:16 12 of 35
SAMPLE RESULTS - 07
L1841408
MW-17
Collected date/time: 03/28/25 08:15
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) Low Fraction 87.0 J 31.4 100 1 04/03/2025 21:20 WG2482770
(S)
a,a,a-Trifluorotoluene(FID)85.9 78.0-120 04/03/2025 21:20 WG2482770
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene 0.179 J 0.0941 1.00 1 04/03/2025 01:49 WG2482300
Toluene U 0.278 1.00 1 04/03/2025 01:49 WG2482300
Ethylbenzene U 0.137 1.00 1 04/03/2025 01:49 WG2482300
Total Xylenes U 0.174 3.00 1 04/03/2025 01:49 WG2482300
Methyl tert-butyl ether U 0.101 1.00 1 04/03/2025 01:49 WG2482300
Naphthalene U 1.00 5.00 1 04/03/2025 01:49 WG2482300
(S) Toluene-d8 113 80.0-120 04/03/2025 01:49 WG2482300
(S) 4-Bromofluorobenzene 99.2 77.0-126 04/03/2025 01:49 WG2482300
(S) 1,2-Dichloroethane-d4 120 70.0-130 04/03/2025 01:49 WG2482300
Semi-Volatile Organic Compounds (GC) by Method 8015D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction 204 60.5 100 1 04/03/2025 11:01 WG2481346
(S) o-Terphenyl 84.7 52.0-156 04/03/2025 11:01 WG2481346
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1841408 04/10/25 08:16 13 of 35
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1841408 04/10/25 08:16 13 of 35
SAMPLE RESULTS - 08
L1841408
MW-18
Collected date/time: 03/28/25 08:00
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) Low Fraction U 31.4 100 1 04/03/2025 21:43 WG2482770
(S)
a,a,a-Trifluorotoluene(FID)85.1 78.0-120 04/03/2025 21:43 WG2482770
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene U 0.0941 1.00 1 04/03/2025 02:08 WG2482300
Toluene U 0.278 1.00 1 04/03/2025 02:08 WG2482300
Ethylbenzene U 0.137 1.00 1 04/03/2025 02:08 WG2482300
Total Xylenes U 0.174 3.00 1 04/03/2025 02:08 WG2482300
Methyl tert-butyl ether U 0.101 1.00 1 04/03/2025 02:08 WG2482300
Naphthalene U 1.00 5.00 1 04/03/2025 02:08 WG2482300
(S) Toluene-d8 112 80.0-120 04/03/2025 02:08 WG2482300
(S) 4-Bromofluorobenzene 98.3 77.0-126 04/03/2025 02:08 WG2482300
(S) 1,2-Dichloroethane-d4 119 70.0-130 04/03/2025 02:08 WG2482300
Semi-Volatile Organic Compounds (GC) by Method 8015D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction 230 60.5 100 1 04/03/2025 10:41 WG2481346
(S) o-Terphenyl 85.3 52.0-156 04/03/2025 10:41 WG2481346
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1841408 04/10/25 08:16 14 of 35
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1841408 04/10/25 08:16 14 of 35
SAMPLE RESULTS - 09
L1841408
MW-20
Collected date/time: 03/28/25 10:00
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) Low Fraction U 31.4 100 1 04/03/2025 22:06 WG2482770
(S)
a,a,a-Trifluorotoluene(FID)84.9 78.0-120 04/03/2025 22:06 WG2482770
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene U 0.0941 1.00 1 04/03/2025 02:27 WG2482300
Toluene U 0.278 1.00 1 04/03/2025 02:27 WG2482300
Ethylbenzene U 0.137 1.00 1 04/03/2025 02:27 WG2482300
Total Xylenes U 0.174 3.00 1 04/03/2025 02:27 WG2482300
Methyl tert-butyl ether U 0.101 1.00 1 04/03/2025 02:27 WG2482300
Naphthalene U 1.00 5.00 1 04/03/2025 02:27 WG2482300
(S) Toluene-d8 111 80.0-120 04/03/2025 02:27 WG2482300
(S) 4-Bromofluorobenzene 97.1 77.0-126 04/03/2025 02:27 WG2482300
(S) 1,2-Dichloroethane-d4 120 70.0-130 04/03/2025 02:27 WG2482300
Semi-Volatile Organic Compounds (GC) by Method 8015D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction 359 60.5 100 1 04/03/2025 01:37 WG2481346
(S) o-Terphenyl 94.2 52.0-156 04/03/2025 01:37 WG2481346
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1841408 04/10/25 08:16 15 of 35
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1841408 04/10/25 08:16 15 of 35
SAMPLE RESULTS - 10
L1841408
MW-21
Collected date/time: 03/28/25 09:45
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) Low Fraction 73.4 J 31.4 100 1 04/03/2025 22:29 WG2482770
(S)
a,a,a-Trifluorotoluene(FID)84.3 78.0-120 04/03/2025 22:29 WG2482770
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene U 0.0941 1.00 1 04/03/2025 02:47 WG2482300
Toluene U 0.278 1.00 1 04/03/2025 02:47 WG2482300
Ethylbenzene U 0.137 1.00 1 04/03/2025 02:47 WG2482300
Total Xylenes U 0.174 3.00 1 04/03/2025 02:47 WG2482300
Methyl tert-butyl ether U 0.101 1.00 1 04/03/2025 02:47 WG2482300
Naphthalene U 1.00 5.00 1 04/03/2025 02:47 WG2482300
(S) Toluene-d8 112 80.0-120 04/03/2025 02:47 WG2482300
(S) 4-Bromofluorobenzene 101 77.0-126 04/03/2025 02:47 WG2482300
(S) 1,2-Dichloroethane-d4 120 70.0-130 04/03/2025 02:47 WG2482300
Semi-Volatile Organic Compounds (GC) by Method 8015D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction 5090 60.5 100 1 04/03/2025 16:40 WG2481774
(S) o-Terphenyl 123 52.0-156 04/03/2025 16:40 WG2481774
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1841408 04/10/25 08:16 16 of 35
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1841408 04/10/25 08:16 16 of 35
SAMPLE RESULTS - 11
L1841408
MW-22
Collected date/time: 03/28/25 09:30
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) Low Fraction U 31.4 100 1 04/03/2025 22:52 WG2482770
(S)
a,a,a-Trifluorotoluene(FID)85.4 78.0-120 04/03/2025 22:52 WG2482770
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene U 0.0941 1.00 1 04/03/2025 03:06 WG2482300
Toluene U 0.278 1.00 1 04/03/2025 03:06 WG2482300
Ethylbenzene U 0.137 1.00 1 04/03/2025 03:06 WG2482300
Total Xylenes U 0.174 3.00 1 04/03/2025 03:06 WG2482300
Methyl tert-butyl ether U 0.101 1.00 1 04/03/2025 03:06 WG2482300
Naphthalene U 1.00 5.00 1 04/03/2025 03:06 WG2482300
(S) Toluene-d8 111 80.0-120 04/03/2025 03:06 WG2482300
(S) 4-Bromofluorobenzene 98.6 77.0-126 04/03/2025 03:06 WG2482300
(S) 1,2-Dichloroethane-d4 118 70.0-130 04/03/2025 03:06 WG2482300
Semi-Volatile Organic Compounds (GC) by Method 8015D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction 911 60.5 100 1 04/03/2025 18:13 WG2481774
(S) o-Terphenyl 130 52.0-156 04/03/2025 18:13 WG2481774
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1841408 04/10/25 08:16 17 of 35
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1841408 04/10/25 08:16 17 of 35
SAMPLE RESULTS - 12
L1841408
MW-23
Collected date/time: 03/28/25 09:15
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) Low Fraction U 31.4 100 1 04/08/2025 01:01 WG2485027
(S)
a,a,a-Trifluorotoluene(FID)85.8 78.0-120 04/08/2025 01:01 WG2485027
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene U 0.0941 1.00 1 04/05/2025 11:02 WG2483795
Toluene U 0.278 1.00 1 04/05/2025 11:02 WG2483795
Ethylbenzene U 0.137 1.00 1 04/05/2025 11:02 WG2483795
Total Xylenes U 0.174 3.00 1 04/05/2025 11:02 WG2483795
Methyl tert-butyl ether U 0.101 1.00 1 04/05/2025 11:02 WG2483795
Naphthalene U 1.00 5.00 1 04/05/2025 11:02 WG2483795
(S) Toluene-d8 115 80.0-120 04/05/2025 11:02 WG2483795
(S) 4-Bromofluorobenzene 96.6 77.0-126 04/05/2025 11:02 WG2483795
(S) 1,2-Dichloroethane-d4 115 70.0-130 04/05/2025 11:02 WG2483795
Semi-Volatile Organic Compounds (GC) by Method 8015D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction 1690 60.5 100 1 04/03/2025 17:20 WG2481774
(S) o-Terphenyl 103 52.0-156 04/03/2025 17:20 WG2481774
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1841408 04/10/25 08:16 18 of 35
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1841408 04/10/25 08:16 18 of 35
SAMPLE RESULTS - 13
L1841408
MW-24
Collected date/time: 03/28/25 09:00
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) Low Fraction U 31.4 100 1 04/08/2025 01:25 WG2485027
(S)
a,a,a-Trifluorotoluene(FID)87.3 78.0-120 04/08/2025 01:25 WG2485027
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene U 0.0941 1.00 1 04/05/2025 11:21 WG2483795
Toluene U 0.278 1.00 1 04/05/2025 11:21 WG2483795
Ethylbenzene U 0.137 1.00 1 04/05/2025 11:21 WG2483795
Total Xylenes U 0.174 3.00 1 04/05/2025 11:21 WG2483795
Methyl tert-butyl ether U 0.101 1.00 1 04/05/2025 11:21 WG2483795
Naphthalene U 1.00 5.00 1 04/05/2025 11:21 WG2483795
(S) Toluene-d8 113 80.0-120 04/05/2025 11:21 WG2483795
(S) 4-Bromofluorobenzene 96.8 77.0-126 04/05/2025 11:21 WG2483795
(S) 1,2-Dichloroethane-d4 118 70.0-130 04/05/2025 11:21 WG2483795
Semi-Volatile Organic Compounds (GC) by Method 8015D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction U 60.5 100 1 04/03/2025 18:33 WG2481774
(S) o-Terphenyl 135 52.0-156 04/03/2025 18:33 WG2481774
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1841408 04/10/25 08:16 19 of 35
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1841408 04/10/25 08:16 19 of 35
SAMPLE RESULTS - 14
L1841408
FIELD BLANK
Collected date/time: 03/28/25 08:45
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) Low Fraction U 31.4 100 1 04/03/2025 00:45 WG2482251
(S)
a,a,a-Trifluorotoluene(FID)99.9 78.0-120 04/03/2025 00:45 WG2482251
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene U 0.0941 1.00 1 04/02/2025 23:32 WG2482300
Toluene U 0.278 1.00 1 04/02/2025 23:32 WG2482300
Ethylbenzene U 0.137 1.00 1 04/02/2025 23:32 WG2482300
Total Xylenes U 0.174 3.00 1 04/02/2025 23:32 WG2482300
Methyl tert-butyl ether U 0.101 1.00 1 04/02/2025 23:32 WG2482300
Naphthalene U 1.00 5.00 1 04/02/2025 23:32 WG2482300
(S) Toluene-d8 111 80.0-120 04/02/2025 23:32 WG2482300
(S) 4-Bromofluorobenzene 98.6 77.0-126 04/02/2025 23:32 WG2482300
(S) 1,2-Dichloroethane-d4 121 70.0-130 04/02/2025 23:32 WG2482300
Semi-Volatile Organic Compounds (GC) by Method 8015D
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
TPH (GC/FID) High Fraction U 60.5 100 1 04/03/2025 18:53 WG2481774
(S) o-Terphenyl 141 52.0-156 04/03/2025 18:53 WG2481774
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1841408 04/10/25 08:16 20 of 35
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1841408 04/10/25 08:16 20 of 35
SAMPLE RESULTS - 15
L1841408
TRIP BLANK
Collected date/time: 03/28/25 00:00
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Benzene U 0.0941 1.00 1 04/05/2025 10:24 WG2483795
Toluene U 0.278 1.00 1 04/05/2025 10:24 WG2483795
Ethylbenzene U 0.137 1.00 1 04/05/2025 10:24 WG2483795
Total Xylenes U 0.174 3.00 1 04/05/2025 10:24 WG2483795
Methyl tert-butyl ether U 0.101 1.00 1 04/05/2025 10:24 WG2483795
Naphthalene U 1.00 5.00 1 04/05/2025 10:24 WG2483795
(S) Toluene-d8 116 80.0-120 04/05/2025 10:24 WG2483795
(S) 4-Bromofluorobenzene 98.3 77.0-126 04/05/2025 10:24 WG2483795
(S) 1,2-Dichloroethane-d4 121 70.0-130 04/05/2025 10:24 WG2483795
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1841408 04/10/25 08:16 21 of 35
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1841408 04/10/25 08:16 21 of 35
QUALITY CONTROL SUMMARYWG2481579
Volatile Organic Compounds (GC) by Method 8015D/GRO L1841408-01,03,04
Method Blank (MB)
(MB) R4194987-4 04/02/25 10:50
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
TPH (GC/FID) Low Fraction U 31.4 100
(S)
a,a,a-Trifluorotoluene(FID)99.8 78.0-120
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R4194987-2 04/02/25 09:47 • (LCSD) R4194987-3 04/02/25 10:08
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
TPH (GC/FID) Low Fraction 5000 4560 4580 91.2 91.6 72.0-127 0.438 20
(S)
a,a,a-Trifluorotoluene(FID) 101 101 78.0-120
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1841408 04/10/25 08:16 22 of 35
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
One Atlas L1841408 04/10/25 08:16 22 of 35
QUALITY CONTROL SUMMARYWG2482251
Volatile Organic Compounds (GC) by Method 8015D/GRO L1841408-14
Method Blank (MB)
(MB) R4194767-2 04/03/25 00:24
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
TPH (GC/FID) Low Fraction U 31.4 100
(S)
a,a,a-Trifluorotoluene(FID)99.3 78.0-120
Laboratory Control Sample (LCS)
(LCS) R4194767-1 04/02/25 23:31
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
TPH (GC/FID) Low Fraction 5000 4670 93.4 72.0-127
(S)
a,a,a-Trifluorotoluene(FID) 106 78.0-120
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG2482770
Volatile Organic Compounds (GC) by Method 8015D/GRO L1841408-05,06,07,08,09,10,11
Method Blank (MB)
(MB) R4196249-3 04/03/25 14:29
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
TPH (GC/FID) Low Fraction U 31.4 100
(S)
a,a,a-Trifluorotoluene(FID)85.1 78.0-120
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R4196249-1 04/03/25 10:57 • (LCSD) R4196249-2 04/03/25 11:21
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
TPH (GC/FID) Low Fraction 5000 4360 4460 87.2 89.2 72.0-127 2.27 20
(S)
a,a,a-Trifluorotoluene(FID) 91.4 91.3 78.0-120
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG2482965
Volatile Organic Compounds (GC) by Method 8015D/GRO L1841408-02
Method Blank (MB)
(MB) R4196110-2 04/04/25 16:12
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
TPH (GC/FID) Low Fraction 36.3 J 31.4 100
(S)
a,a,a-Trifluorotoluene(FID)92.5 78.0-120
Laboratory Control Sample (LCS)
(LCS) R4196110-1 04/04/25 14:07
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
TPH (GC/FID) Low Fraction 5000 5020 100 72.0-127
(S)
a,a,a-Trifluorotoluene(FID) 102 78.0-120
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG2485027
Volatile Organic Compounds (GC) by Method 8015D/GRO L1841408-12,13
Method Blank (MB)
(MB) R4196337-2 04/07/25 22:21
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
TPH (GC/FID) Low Fraction U 31.4 100
(S)
a,a,a-Trifluorotoluene(FID)86.2 78.0-120
Laboratory Control Sample (LCS)
(LCS) R4196337-1 04/07/25 21:35
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
TPH (GC/FID) Low Fraction 5000 4600 92.0 72.0-127
(S)
a,a,a-Trifluorotoluene(FID) 88.8 78.0-120
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG2482300
Volatile Organic Compounds (GC/MS) by Method 8260B L1841408-01,02,03,07,08,09,10,11,14
Method Blank (MB)
(MB) R4195173-3 04/02/25 22:24
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Benzene U 0.0941 1.00
Toluene U 0.278 1.00
Ethylbenzene U 0.137 1.00
Total Xylenes U 0.174 3.00
Methyl tert-butyl ether U 0.101 1.00
Naphthalene U 1.00 5.00
(S) Toluene-d8 112 80.0-120
(S) 4-Bromofluorobenzene 97.3 77.0-126
(S) 1,2-Dichloroethane-d4 116 70.0-130
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R4195173-1 04/02/25 21:26 • (LCSD) R4195173-2 04/02/25 21:45
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
Benzene 5.00 4.17 4.12 83.4 82.4 70.0-123 1.21 20
Toluene 5.00 5.15 4.97 103 99.4 79.0-120 3.56 20
Ethylbenzene 5.00 5.05 4.95 101 99.0 79.0-123 2.00 20
Total Xylenes 15.0 15.0 14.8 100 98.7 79.0-123 1.34 20
Methyl tert-butyl ether 5.00 4.86 4.71 97.2 94.2 68.0-125 3.13 20
Naphthalene 5.00 5.03 5.20 101 104 54.0-135 3.32 20
(S) Toluene-d8 110 109 80.0-120
(S) 4-Bromofluorobenzene 99.7 98.4 77.0-126
(S) 1,2-Dichloroethane-d4 119 119 70.0-130
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG2483795
Volatile Organic Compounds (GC/MS) by Method 8260B L1841408-04,12,13,15
Method Blank (MB)
(MB) R4196772-2 04/05/25 08:07
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Benzene U 0.0941 1.00
Toluene U 0.278 1.00
Ethylbenzene U 0.137 1.00
Total Xylenes U 0.174 3.00
Methyl tert-butyl ether U 0.101 1.00
Naphthalene U 1.00 5.00
(S) Toluene-d8 113 80.0-120
(S) 4-Bromofluorobenzene 97.2 77.0-126
(S) 1,2-Dichloroethane-d4 120 70.0-130
Laboratory Control Sample (LCS)
(LCS) R4196772-1 04/05/25 07:28
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
Benzene 5.00 4.87 97.4 70.0-123
Toluene 5.00 5.84 117 79.0-120
Ethylbenzene 5.00 5.73 115 79.0-123
Total Xylenes 15.0 17.2 115 79.0-123
Methyl tert-butyl ether 5.00 5.39 108 68.0-125
Naphthalene 5.00 5.80 116 54.0-135
(S) Toluene-d8 110 80.0-120
(S) 4-Bromofluorobenzene 97.5 77.0-126
(S) 1,2-Dichloroethane-d4 121 70.0-130
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG2485835
Volatile Organic Compounds (GC/MS) by Method 8260B L1841408-04,05,06
Method Blank (MB)
(MB) R4197131-3 04/08/25 22:39
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Benzene U 0.0941 1.00
Toluene U 0.278 1.00
Ethylbenzene U 0.137 1.00
Total Xylenes U 0.174 3.00
Methyl tert-butyl ether U 0.101 1.00
Naphthalene U 1.00 5.00
(S) Toluene-d8 104 80.0-120
(S) 4-Bromofluorobenzene 96.9 77.0-126
(S) 1,2-Dichloroethane-d4 119 70.0-130
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R4197131-1 04/08/25 21:38 • (LCSD) R4197131-2 04/08/25 21:58
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
Benzene 5.00 4.84 4.76 96.8 95.2 70.0-123 1.67 20
Toluene 5.00 5.39 5.36 108 107 79.0-120 0.558 20
Ethylbenzene 5.00 5.10 5.06 102 101 79.0-123 0.787 20
Total Xylenes 15.0 16.1 15.4 107 103 79.0-123 4.44 20
Methyl tert-butyl ether 5.00 4.92 4.93 98.4 98.6 68.0-125 0.203 20
Naphthalene 5.00 6.34 6.36 127 127 54.0-135 0.315 20
(S) Toluene-d8 105 103 80.0-120
(S) 4-Bromofluorobenzene 102 99.4 77.0-126
(S) 1,2-Dichloroethane-d4 117 117 70.0-130
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG2481346
Semi-Volatile Organic Compounds (GC) by Method 8015D L1841408-01,02,03,04,05,06,07,08,09
Method Blank (MB)
(MB) R4194595-1 04/02/25 20:41
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
TPH (GC/FID) High Fraction U 60.5 100
(S) o-Terphenyl 88.0 52.0-156
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R4194595-2 04/02/25 21:01 • (LCSD) R4194595-3 04/02/25 21:21
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
TPH (GC/FID) High Fraction 1500 1470 1450 98.0 96.7 50.0-150 1.37 20
(S) o-Terphenyl 92.0 91.0 52.0-156
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG2481774
Semi-Volatile Organic Compounds (GC) by Method 8015D L1841408-10,11,12,13,14
Method Blank (MB)
(MB) R4194613-1 04/03/25 00:28
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
TPH (GC/FID) High Fraction U 60.5 100
(S) o-Terphenyl 100 52.0-156
Laboratory Control Sample (LCS)
(LCS) R4194613-2 04/03/25 00:48
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
TPH (GC/FID) High Fraction 1500 1440 96.0 50.0-150
(S) o-Terphenyl 102 52.0-156
L1840194-02 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD)
(OS) L1840194-02 04/03/25 01:09 • (MS) R4194613-3 04/03/25 01:29 • (MSD) R4194613-4 04/03/25 01:49
Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l ug/l %%%%%
TPH (GC/FID) High Fraction 1430 228 1670 1680 101 102 1 50.0-150 0.597 20
(S) o-Terphenyl 116 128 52.0-156
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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GLOSSARY OF TERMS
Guide to Reading and Understanding Your Laboratory Report
The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not
intended as a comprehensive explanation, and if you have additional questions please contact your project representative.
Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name,
Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and
Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received.
Abbreviations and Definitions
MDL Method Detection Limit.
RDL Reported Detection Limit.
Rec.Recovery.
RPD Relative Percent Difference.
SDG Sample Delivery Group.
(S)
Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and
Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be
detected in all environmental media.
U Not detected at the Reporting Limit (or MDL where applicable).
Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes
reported.
Dilution
If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the
standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the
laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the
result reported has already been corrected for this factor.
Limits
These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal
for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or
duplicated within these ranges.
Original Sample The non-spiked sample in the prep batch used to determine the Relative Percent Difference (RPD) from a quality control
sample. The Original Sample may not be included within the reported SDG.
Qualifier
This column provides a letter and/or number designation that corresponds to additional information concerning the result
reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and
potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable.
Result
The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was
no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL”
(Below Detectable Levels). The information in the results column should always be accompanied by either an MDL
(Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect
or report for this analyte.
Uncertainty
(Radiochemistry)Confidence level of 2 sigma.
Case Narrative (Cn)
A brief discussion about the included sample results, including a discussion of any non-conformances to protocol
observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will
be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report.
Quality Control
Summary (Qc)
This section of the report includes the results of the laboratory quality control analyses required by procedure or
analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not
being performed on your samples typically, but on laboratory generated material.
Sample Chain of
Custody (Sc)
This is the document created in the field when your samples were initially collected. This is used to verify the time and
date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This
chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the
samples from the time of collection until delivery to the laboratory for analysis.
Sample Results (Sr)
This section of your report will provide the results of all testing performed on your samples. These results are provided
by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for
each sample will provide the name and method number for the analysis reported.
Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and
times of preparation and/or analysis.
Qualifier Description
C5 The reported concentration is an estimate. The continuing calibration standard associated with this data responded high.
Data is likely to show a high bias concerning the result.
J The identification of the analyte is acceptable; the reported value is an estimate.
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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Colorado TN00003 New York 11742
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Georgia NELAP North Carolina ³41
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Idaho TN00003 Ohio–VAP CL0069
Illinois 200008 Oklahoma 9915
Indiana C-TN-01 Oregon TN200002
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Louisiana LA018 Texas T104704245-20-18
Maine TN00003 Texas ⁵LAB0152
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ACCREDITATIONS & LOCATIONS

¹ Drinking Water ² Underground Storage Tanks ³ Aquatic Toxicity ⁴ Chemical/Microbiological ⁵ Mold ⁶ Wastewater n/a Accreditation not applicable
* Not all certifications held by the laboratory are applicable to the results reported in the attached report.
* Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace Analytical.
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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