DERR-2024-011791

Johnston Leigh, Inc.
1820 S Palomar Ln
Kanab, Utah 84741
[phone]
CommonCents/Reports/2024 SIR 10/22/2024

October 22, 2024

Mr. Mark Crim
DERR Project Manager
Division of Environmental Response and Remediation
P.O. Box 144840
Salt Lake City, UT 84114-4840

RE: Subsurface Investigation August 2024
CommonCents, 907 N 400 E, Harrisville, Utah
Facility Identification No. 1200401, Release MSB

Dear Mr. Crim:

On behalf of Moyle Petroleum (Moyle), operating CommonCents Stores in Utah, Johnston
Leigh, Inc. (JLI) has prepared this Subsurface Investigation Report (SIR) for additional
work at the. CommonCents Store located at 907 N 400 E in Harrisville, Utah (Figure 1).
The Site includes an operating CommonCents convenience store, retail gasoline and diesel
dispensers, and a car wash (Figure 2). This report was prepared in part to satisfy the
requirements of the Utah Division of Environmental Response and Remediation (DERR)
in their letter to Moyle Petroleum Company (Moyle) dated October 30, 2023 (Attachment
A). The work performed at the Site included drilling and installation of three groundwater
monitoring wells, soil sampling from the soil borings, groundwater sampling of DERR
required monitoring wells, and top-of-casing (TOC) survey to measure the first
encountered groundwater elevation.

Soil Borings and Groundwater Monitoring Wells
Three soil borings were drilled and converted to groundwater monitoring wells on August
16, 2024. The locations are shown in Figure 2. Prior to drilling, Blue Stakes of Utah
were contacted, and subsurface utilities were marked. In addition to Blue Stakes, each soil
boring was cleared of utilities to a depth of approximately 5 feet below grade using
Hydrovac technology because of reconstruction activities performed by both the former
owner Flying J Inc and the City of Harrisville.

Soil boring MW15, MW16 and MW17 were advanced by ET Technologies Inc. (ET)
using push probe techniques consisting of a track mounted 7842 Geoprobe® rig. Standard
Operating Procedures (SOP) for soil sampling and groundwater monitor well installation
is described in JLI SOPs included in Attachment B. Total depths were 20 feet in MW15,
and 15 feet in wells MW16 and MW17. Well MW15 is located in the area where more
backfill was used to raise the Site during reconstruction in late 1990’s. The drilling logs
and well construction diagrams are presented in Attachment C.

Subsurface Investigation Report October 2024
CommonCents, 907 N. 400 E., Harrisville, Utah
Facility Identification No. 1200401, Release MSB

CommonCents/Reports/2024 SIR/10/20/2024
2
Soil Sampling
One soil sample was collected from each soil boring above first encountered groundwater.
Soil was screened using a photoionization detector PID every 1-foot below the hydrovac
interval to total depth of the soil boring. PID measurements were all zero. Soil samples
were compacted into laboratory containers, bagged in bubble wrap baggies and placed into
coolers with ice. The soil samples were delivered to Pace National Laboratory (Pace), a
Utah certified laboratory in Mt. Juliet, Tennessee. The groundwater samples were
analyzed for compounds of concern (COC) that include diesel range organics (DRO) and
gasoline range organics (GRO) using EPA Method 8015B, and methyl tertiary butyl ether,
benzene, ethyl benzene, total xylenes, and naphthalene (MBTEXN) using EPA Method
8260B
.
Soil lithology in boring MW15 consisted of 8 feet of engineered fill underlain by 12 feet
of silty clay. Groundwater was encountered in MW15 at 7 feet and extended down to 9.5
feet. Soil lithology in boring MW16 consisted of 5 feet of engineered fill underlain by 1
foot asphalt surface, underlain by 1 foot of fill, underlain by 4 feet of sandy silt, and
underlain by 4 feet of silty clay. Groundwater was encountered in MW16 at 7 feet and
extended down to 10 feet. Soil lithology in boring MW17 consisted of 8 feet of
engineered fill underlain by 1 foot asphalt surface and underlain by 6 feet of silty clay. 12
feet of silty clay. Groundwater was encountered in MW17 at 8 feet and extended down to
10 feet.

Each well was constructed following the SOPs in Attachment B and consisted of 2-inch
diameter PVC 0.010-inch well screen and blank riser pipe. Screen intervals consisted of
20-5 feet in well MW15, and 15-5 feet in wells MW16 and MW17. Each well was
developed and allowed to set 24 hours prior to groundwater sampling. The TOC relative
elevation was surveyed for each new well using existing well MW5 TOC elevations a
base.

Groundwater Elevation
JLI measured the depth-to-water in all wells using a Solinst water level meter that reads
accurately to 1/100th of a foot. The field data measurements are presented in Table 1.
Field notes are provided in Attachment D. The depth-to-water measurements were
subtracted from the surveyed TOC elevations (arbitrary datum of 100 feet) to calculate the
relative groundwater elevation at the site. The groundwater elevation data for August 27,
2024, was gridded using the Kriging method and contoured using Surfer™ (Version 15)
contour program (Figure 3). Potential groundwater highs near well MW7 and
groundwater low near well MW11 generally produced an approximate hydraulic gradient
of 0.025 feet per foot (ft/ft) to the west on 8/27/2024.

Groundwater Sampling
The groundwater monitoring wells sampled on August 28, 2024, included MW-3, MW-5,
MW9, MW-11, MW15, MW16, and MW17. Well MW2 could not be accessed due to the
car parked on the well all day and the driver was not present to move the car. Additionally
as per the DERR request, underground storage tank (UST) basin monitor wells HNW,
HNE, HSW, and HSE were sampled. JLI purged groundwater from each well using a
Subsurface Investigation Report October 2024
CommonCents, 907 N. 400 E., Harrisville, Utah
Facility Identification No. 1200401, Release MSB

CommonCents/Reports/2024 SIR/10/20/2024
3
peristaltic pump and dedicated polyethylene tubing. The wells were either low-stress
purged, generally following procedures in Low Stress (Low Flow) Purging and Sampling
Procedure for the Collection of Groundwater Samples from Monitoring Wells (US EPA,
2017); or purged dry and sampled the following day using a peristaltic pump and
dedicated polyethylene tubing.

The groundwater samples were collected in 40-milliliter pre-acidified bottles, bagged in
bubble wrap baggies, and placed into coolers with ice. The groundwater samples were
delivered to Pace National Laboratory (Pace), a Utah certified laboratory in Mt. Juliet,
Tennessee. The groundwater samples were analyzed for COCs that include DRO and
GRO using EPA Method 8015B, and MBTEXN using EPA Method 8260B.

Soil Analytical Results MW15, MW16, MW17
The soil analytical results were all below COC Tier 1 values. The cumulative soil analytical
results at the site are presented on Table 2. Laboratory reports are included in Attachment E.
All the soil samples collected at the site are below Tier I values.

Groundwater Analytical Results August 2024
UST basin monitor wells were non-detect for all compounds of concern (COC). MTBE
was slightly above Tier I values in MW3 and MW5. Cumulative groundwater analytical
results are presented on Table 1. August 28, 2024, specific groundwater analytical results
are presented on Table 2. The laboratory analytical reports are included in Attachment E.
The approximate distribution of dissolved benzene and MTBE on August 28, 2024, is
presented in Figure 3.

Groundwater samples which contained a COC above RBCA Tier 1 levels on
August 28, 2024, include MTBE in well MW3 and MW5. The individual analytes
detected above Utah ISL in addition to the analytes identified above include:
• MTBE at 0.694 mg/l in well MW3 and 0.59 mg/l in well MW5
• Benzene at 0.0403 mg/l in well MW5
• GRO at 1.42 mg/l in well MW3, and 1.67 mg/l in well MW5
• DRO at 1.33 mg/l in well MW5, 1.08 mg/l in MW15, and 2.83 mg/l in MW17.

The groundwater benzene and MTBE concentration vs time and linear trend line is plotted
on Table 3. The groundwater elevation and benzene and MTBE concentrations vs time,
and linear trend, in wells MW3 and MW5 are plotted on Table 4.

JLI will have the laboratory fractionate DRO at the next sampling event that is anticipated
to occur in November 2024. Based on the information in this report, the dissolved COC’s
above ISL in groundwater, apart from potentially DRO, appear to may remain onsite.

Subsurface Investigation Report October 2024
CommonCents, 907 N. 400 E., Harrisville, Utah
Facility Identification No. 1200401, Release MSB

CommonCents/Reports/2024 SIR/10/20/2024
4

If you have questions or require additional information, please contact me by phone at
[phone], or email at [e-mail].

Sincerely,
Leigh Beem, P.G., CC 0199
Johnston Leigh, Inc.

CC: Mr. Jim Sachs, Moyle Petroleum

Attachments: Figure 1 Site Location Map
Figure 2 Site Map
Figure 3 Groundwater Potentiometric Isoconcentration Map 8/28/2024
Table 1 Soil Boring Sample Results
Table 2 Cumulative Groundwater Analytical Results and Field Parameters
Table 3 DERR Required Well Groundwater Sampling August 2024
Table 4 Benzene and MTBE Groundwater Concentrations vs Time
Table 5 Groundwater Elevation versus COC Concentrations
Attachment A DERR letter to Moyle dated 10/30/2023
Attachment B JLI SOPs
Attachment C Boring Logs MW15, MW16, MW17
Attachment D August 27-28 Field Notes
Attachment E Laboratory Reports 8/28/2024

FIGURES

© OpenStreetMap (and) contributors, CC-BY-SA
Johnston Leigh Inc.[phone]
PREPARED BY:DATE:PJS 01/28/2022
FIGURE 1SITE LOCATION MAP
CommonCents907 N 400 EHarrisville, Utah
±
0 0.25 0.50.125 Miles
CommonCents
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MW9
MW8
MW7
MW6
MW5
MW4
MW3
MW2
MW1
MW17
MW16
MW15
MW14
MW11
MW10
Johnston Leigh Inc.[phone]
PREPARED BY:DATE:
PJS 10/21/2024
FIGURE 2
SITE MAP
CommonCents
907 N 400 EHarrisville, Utah
±
0 50 10025
Fe et
MONITORING WELLS/SOIL BORINGS/UTILITIES
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MW6
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MW14
MW11
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FACILITY #1200401,
RELEASE MSB
FORMER FLYING J "C" STORE
DBA Common
Cents
HARRISVIL
LE, UTAH
GROUNDWATER
POTENTIOMETRIC
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ISOCON
CENTRATION MAP
AUGUST 2024
FIGURE
3
Drawn
By:
Date:
File:
Joshns
ton Leigh Inc.
[phone]
Job
No.:
pjs
10/21
/2024
£
10 0 10 20 30 405
Feet
Legend
!.Monitoring Well Locations
Groundwater Elevation
Benzene Isoconcentration (mg/l)
MTBE Isoconcentration (mg/l)

TABLES

TABLE 1
SOIL BORING SAMPLE RESULTS
CommonCents, 907 North 400 East, Harrisville, Utah
Facility 1200401, Release MSB
Boring Sample TPH GRO*TPH DRO*Ethyl Total
ID ID Date (C6-C10)(C10-C28)*MtBE Benzene Toluene Benzene Xylenes Naphthalene
(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)
1 SB-B1 10/05/10 No soil sample due to shallow groundwater and daylight procedure
2 SB-B2-6.5 10/05/10 <0.57 <4.6 <0.0057 <0.0057 <0.028 <0.0057 <0.017 <0.028
SB-B2-10 10/05/10 0.65 <4.9 0.028 <0.0061 <0.031 <0.0061 <0.018 <0.031
3 SB-B3-6.5 10/05/10 <0.56 <4.5 <0.005 <0.005 <0.025 <0.005 <0.005 <0.025
SB-B3-10 10/05/10 <0.72 <5.7 <0.0072 <0.0072 <0.036 <0.0072 <0.022 <0.036
4 SB-B4-7 10/05/10 <0.64 <5.1 <0.0064 <0.0064 <0.032 <0.0064 <0.019 <0.032
5 SB-B5-7 10/05/10 1.5 <4.4 0.022 <0.0055 <0.027 0.01 0.085 0.091
SB-B5-9 10/05/10 <0.6 <4.8 <0.006 <0.006 <0.030 <0.006 <0.018 <0.030
6 SB-B6-6 10/05/10 <0.62 <5.0 <0.0062 <0.0062 <0.031 <0.0062 <0.019 <0.031
SB-B6-9 10/05/10 <0.60 <4.8 <0.006 <0.006 <0.030 <0.006 <0.018 <0.030
7 SB-B7-7 10/05/10 <0.61 <4.8 0.047 <0.0061 <0.030 <0.0061 <0.018 <0.030
SB-B7-9 10/05/10 <0.59 <4.7 0.036 <0.0059 <0.030 <0.0059 <0.018 <0.030
8 SB-B8-6 10/05/10 <0.66 16 0.12 <0.0066 <0.033 <0.0066 <0.020 <0.033
SB-B8-9 10/05/10 2.6 77 0.078 <0.0075 <0.038 <0.0075 <0.022 <0.038
9 SB-B9-9 11/02/10 <0.61 <4.9 0.15 <0.0061 <0.030 <0.0061 <0.018 <0.030
10 SB-B10-10 11/02/10 <0.64 <5.1 <0.0064 <0.0064 <0.032 <0.0064 <0.019 <0.032
11 SB-B11-12 11/02/10 <0.62 <5.0 <0.0062 <0.0062 <0.031 <0.0062 <0.019 <0.031
12 SB-B12-10 11/02/10 <0.61 <4.9 0.058 <0.0061 <0.030 <0.0061 <0.018 <0.030
13 SB-B13-6 05/16/11 <0.62 <5.0 <0.0062 <0.0062 <0.081 <0.0062 <0.019 <0.081
14 SB-B14-7 05/16/11 <0.64 6.1 <0.0064 <0.0064 <0.082 <0.0064 <0.019 <0.082
15 SB-B15-9.5 11/17/11 <10 <10 <0.005 <0.005 <0.025 <0.005 <0.015 <0.025
16 SB-B16-5 11/17/11 <10 <10 <0.005 <0.005 <0.025 <0.005 <0.015 <0.025
16b SB-B16b 9-10 01/13/16 90.5 38 <0.005 <0.005 <0.0275 0.00591 <0.0165 0.121
17 SB-B17 12.5-13.5 01/13/16 <0.631 <252 0.00988 <0.00631 <0.0315 <0.00631 <0.0189 <0.0315
MW15 SB-MW15 6-7 08/28/24 <4.83 <5.01 <0.0242 <0.00193 <0.00966 <0.00483 <0.0126 <0.0242
MW16 SB-MW16 7-8 08/28/24 <9.65 50.3 0.00617 <0.00386 <0.0194 <0.00965 <0.0251 0.0844
MW17 SB-MW17 9-10 08/28/24 <5.39 <5.13 0.0205 <0.00216 <0.0108 <0.00539 <0.0140 <0.0270
RBCA Tier 1 Values mg/kg 1500 5000 0.3 0.9 25 23 142 51
Utah ISL Values mg/kg 150 500 0.3 0.2 9 5 142 51
GRO Gasoline Range Organics
DRO Diesel Range Organics
<0.001 Concentration was less than the detection limit shown
NS Not Sampled
mg/L Milligrams per liter
MTBE Methyl tertiary butyl ether
BOLD Indicates concentration exceeds the Tier I Screening Levels
CommonCents Harrisville, UT Page 1 of 1 10/22/2024
TABLE 2
CUMMULATIVE GROUNDWATER ANALYTICAL RESULTS and FIELD PARAMETERS
CommonCents, 907 North 400 East, Harrisville, Utah
Facility 1200401, Release MSB
Well TPH GRO*TPH DRO*Ethyl Total Benzene Total Mass Depth to Groundwater
ID Date (C6-C10)(C10-C28)*MtBE Benzene Toluene Benzene Xylenes Naphthalene Mass Water Elevation DO ORP Conductivity pH Temperature
(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/l)(feet)(ft above datum)(mg/L)(mv)(ms/m)© or (F)
Monitor Wells
MW1 10/08/10 0.82 1.7 0.48 0.086 <0.005 0.0068 0.019 <0.005 0.086 3.11 5.61 93.50
MW1 11/02/10 1 0.66 0.21 0.091 <0.005 0.0076 0.019 0.48 0.091 2.47 5.51 93.60
MW1 05/18/11 0.52 0.21 0.087 0.02 0.0081 0.0012 0.0039 <0.005 0.02 0.85 6.50 92.61
MW1 10/31/11 1.4 0.54 0.15 0.16 <0.025 0.01 0.1 0.025 0.16 2.39 5.57 93.54 0.2 -220.0 2.6 20.5
MW1 04/05/12 0.74 1 0.078 0.033 0.005 0.0024 0.015 0.005 0.033 1.88 5.12 93.99 0.3 NA 1.96 7.16 14.2
MW1 11/08/12 1 0.91 0.09 0.073 <0.005 0.003 0.021 <0.005 0.073 2.10 5.50 93.61
MW1 06/26/13 <0.50 1.16 0.124 0.027 <0.002 <0.002 <0.006 <0.002 0.027 1.31 5.66 93.45
MW1 03/31/14 0.45 0.67 0.051 0.012 <0.005 <0.001 <0.003 <0.005 0.012 1.18 5.43 93.68 0.2 -119.0 12.7 6.9 13.3
MW1 11/07/14 0.54 0.51 0.11 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 1.16 6.98 92.13 1.0 -133.0 3.87 7.38 20.9
MW1 11/11/16 0.436 0.326 0.091 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.85 5.54 93.57 0.9 -135.0 5.2 6.6 21.4
MW1 11/16/2017 0.618 0.572 0.138 0.00533 <0.00100 <0.00100 <0.00300 <0.00500 0.00533 1.33 6.55 92.56 6.3 -112.0 1.8 7.64 18.6
MW1 06/14/2018 0.792 2.39 0.103 0.00698 <0.00100 <0.00100 <0.00300 <0.00500 0.00698 3.29 5.63 93.48 1.2 -8.0 2.33 7.28 17
MW1 12/20/2018 0.266 6.02 0.0688 <0.001 <0.001 <0.001 <0.003 <0.005 0.001 6.35 5.62 93.49 3.1 79.9 1.7 7.8 16.1
MW1 07/20/19 0.555 1.58 0.109 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 2.24 5.67 93.44
MW1 04/09/21 0.126 0.839 0.0185 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.98 5.43 93.68 1.7 104.0 2.41 7.35 13.6
MW1 12/08/21 0.351 0.518 0.0493 <0.001 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.92 7.09 92.02 1.9 114.0 2.85 7.16 13.8
MW1 07/12/22 0.328 0.57 0.0637 <0.001 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.96 6.80 92.31 1.0 4.48 7.92 22.2
MW1 11/17/22 0.127 0.3 0.103 <0.001 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.53 7.67 91.44 0.3 -64.0 2.05 6.85 18.5
MW1 08/27/24 Not on sampling list DERR 10/30/2023 6.54 92.57
MW2 10/05/10 0.15 0.58 0.012 <0.001 <0.005 <0.001 0.051 0.0051 0.001 0.80 8.64 90.01 4.1 -62 0.6 7.1 20
MW2 11/02/10 0.13 0.83 0.042 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 1.00 9.21 89.44
MW2 05/18/11 11 25 0.65 1.2 3.6 0.072 0.57 <0.50 1.2 42.09 8.22 90.43
MW2 10/31/11 0.8 <0.100 0.026 0.0093 <0.005 <0.001 <0.003 <0.005 0.0093 0.84 8.20 90.45 0.28 -218 1.03 15.9
MW2 04/05/12 <0.100 <0.100 <0.001 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.00 4.32 94.33 8.2 NA 0.5 7.19 13.1
MW2 11/08/12 1.6 0.21 0.045 0.03 0.013 0.0016 0.0042 <0.005 0.03 1.90 9.78 88.87 13.1
MW2 06/26/13 <0.50 <0.50 0.017 0.0147 0.003 <0.002 <0.006 <0.002 0.0147 0.03 8.85 89.80 13.1
MW2 03/31/14 1.6 2.4 0.22 0.13 <0.005 0.0045 0.0078 <0.005 0.13 4.36 9.62 89.03 0.35 -141 2.8 7.1 11.7
MW2 11/07/14 2.1 0.84 0.24 0.056 <0.025 <0.005 <0.015 <0.025 0.056 3.24 9.88 88.77 0.87 -155 1.96 7.23 18.3
MW2 11/11/16 0.743 0.553 0.0691 0.0035 <0.005 <0.001 <0.003 <0.005 0.0035 1.37 9.71 88.94 0.5 -135 3.45 6.51 19
MW2 11/15/2017 0.466 <0.100 0.00895 <0.001 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.47 9.62 89.03 4.01 -114 0.36 7.32 15.4
MW2 06/14/2018 0.182 0.141 <0.00100 <0.001 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.32 8.13 90.52 0.62 -58 0.38 7.41 17.2
MW2 12/19/2018 0.301 0.497 0.0252 <0.001 <0.001 <0.001 <0.003 <0.005 0.001 0.82 9.59 89.06 0.73 14 0.88 7.33 12.9
MW2 07/20/19 0.5 <0.100 <0.001 <0.001 <0.001 <0.001 <0.003 <0.005 0.001 0.50 8.87 89.78
MW2 04/09/21 0.22 1.11 0.0556 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 1.39 9.55 89.10 2.13 102 2.46 7.54 15.1
MW2 12/08/21 0.301 0.845 0.0753 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 1.22 9.87 88.78 2.02 98 2.54 7.35 14.9
MW2 07/12/22 0.253 0.451 0.0904 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.79 7.33 91.32 3.81 1.47 7.89 20.5
MW2 11/17/22 0.162 0.486 0.0248 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.67 9.60 89.05 0.39 -55 0.86 7.11 16.5
MW2 08/27/24 Not accessible day of sampling, car parked on well all day 9.17 89.48
MW3 10/05/10 2.8 1 4.4 <0.001 <0.050 <0.010 0.03 0.05 0.001 8.28 8.22 90.08
MW3 11/02/10 1.3 1.9 3.8 0.0012 <0.005 <0.001 <0.003 <0.005 0.0012 7.00 8.40 89.90
MW3 05/18/11 4.1 1.7 1.1 0.48 0.29 <0.10 <0.30 <0.050 0.48 7.67 7.58 90.72
MW3 10/31/11 6.8 0.53 2 0.52 1.4 0.033 0.25 <25 0.52 11.53 7.89 90.41 0.15 -207 5.32 19.6
MW3 04/05/12 19 0.5 0.06 0.4 2.4 0.34 2.7 0.03 0.4 25.43 4.93 93.37 0.24 NA 0.79 7.16 13.5
MW3 11/08/12 4 1.8 1.2 0.25 <0.025 0.05 0.59 <0.025 0.25 7.89 8.43 89.87
MW3 06/26/13 0.94 1.96 0.605 0.169 <0.004 <0.004 0.331 <0.004 0.169 4.01 8.34 89.96
MW3 03/31/14 2.3 2.7 0.48 0.13 <0.005 0.063 0.14 <0.005 0.13 5.81 8.25 90.05 0.21 -101 14.7 6.6 12.3
MW3 11/07/14 2.1 1.3 1.3 0.12 <0.025 0.026 0.24 <0.025 0.12 5.09 8.78 89.52 1.07 -143 9.53 6.95 20.4
MW3 11/11/16 1.25 0.61 1.28 0.0337 <0.005 <0.001 <0.00831 <0.005 0.0337 3.17 8.69 89.61 1 -134 10.35 6.31 20.1
MW3 11/16/2017 2.13 1.4 1.05 0.0772 0.00137 <0.00100 0.00856 <0.00500 0.0772 4.67 8.69 89.61 3.99 -137 2.37 7.14 17.6
MW3 06/14/2018 2.29 1.66 0.936 0.0647 <0.0100 <0.0100 <0.0300 <0.0500 0.0647 4.95 8.16 90.14 0.9 -56 3.5 7.11 18.3
MW3 12/20/2018 0.956 16.3 0.586 0.0115 <0.0100 <0.0100 <0.0300 <0.0500 0.0115 17.85 8.64 89.66 5.02 82.7 2.72 7.36 13.3
MW3 07/20/19 2.132 9.52 0.51 0.0203 <0.0100 <0.0100 0.00318 <0.0500 0.0203 12.19 8.37 89.93
MW3 04/09/21 0.649 1.27 0.754 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 2.67 8.48 89.82 1.21 61 2.81 7.23 14.2
MW3D 04/09/21 0.688 1.21 0.648 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 2.55 8.48 89.82 1.21 61 2.81 7.23 14.2
MW3 12/08/21 1.01 1.09 0.726 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 2.83 8.79 89.51 1.33 58 2.71 7.39 13.8
MW3 07/12/22 1.54 0.424 0.715 0.00661 <0.00100 <0.00100 <0.00300 <0.00500 0.00661 2.69 8.18 90.12 0.69 3.92 7.9 21.1
MW3 11/17/22 1.00 0.978 0.394 <0.025 <0.025 <0.025 <0.075 <0.125 0.001 2.37 8.61 89.69 0.87 -92 2.72 6.83 16.8
MW3 08/27/24 1.42 0.848 0.694 <0.0200 <0.0200 <0.0200 <0.0600 <0.100 0.02 2.96 8.65 89.65 3.57 1.7 6.85 26.05
CommonCents Harrisville Page 1 of 4 10/22/2024
TABLE 2
CUMMULATIVE GROUNDWATER ANALYTICAL RESULTS and FIELD PARAMETERS
CommonCents, 907 North 400 East, Harrisville, Utah
Facility 1200401, Release MSB
Well TPH GRO*TPH DRO*Ethyl Total Benzene Total Mass Depth to Groundwater
ID Date (C6-C10)(C10-C28)*MtBE Benzene Toluene Benzene Xylenes Naphthalene Mass Water Elevation DO ORP Conductivity pH Temperature
(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/l)(feet)(ft above datum)(mg/L)(mv)(ms/m)© or (F)
MW4 10/08/10 <0.10 2.6 0.082 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 2.68 8.76 89.80
MW4 11/02/10 <0.10 4.2 0.01 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 4.21 5.58 92.98
MW4 05/18/11 <0.10 2 0.0064 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 2.01 4.39 94.17
MW4 10/31/11 <0.10 0.78 0.01 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.79 5.73 92.83 0.4 -177 1.69 13.6
MW4 04/05/12 <0.10 0.4 0.033 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.43 5.52 93.04 0.36 NA 2.07 7.18 9.7
MW4 11/08/12 <0.10 1.1 0.027 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 1.13 5.89 92.67
MW4 06/26/13 <0.5 <0.5 0.032 <0.002 <0.002 <0.002 <0.006 <0.002 0.002 0.03 6.15 92.41
MW4 03/31/14 <0.1 1.5 0.031 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 1.53 6.64 91.92 0.25 -113 7.65 7.1 9.3
MW4 11/07/14 <0.1 0.78 0.038 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.82 7.50 91.06
MW4 11/11/16 <0.1 0.967 0.0276 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.99 7.44 91.12
MW4 11/16/2017 <0.100 1.01 0.0159 <0.001 <0.00100 <0.00100 <0.00300 <0.00500 0.001 1.03 7.10 91.46
MW4 06/14/2018 <0.100 0.868 0.0151 <0.001 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.88 6.08 92.48 4.87 -9 0.99 7.22 20.7
MW4 12/20/2018 <0.100 0.84 0.0122 <0.001 <0.001 <0.001 <0.003 <0.005 0.001 0.85 7.86 90.70
MW4 07/20/19 <0.100 0.402 0.01121 <0.001 <0.001 <0.001 <0.003 <0.005 0.001 0.41 6.18 92.38
MW4 04/09/21 <0.100 0.541 0.00721 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.55 6.70 91.86 6.9 127 2.17 7.67 11.9
MW4 12/08/21 <0.100 0.531 0.0102 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.54 7.87 90.69 5.2 136 2.48 7.27 12.6
MW4 07/12/22 <0.100 0.311 0.00455 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.32 5.87 92.69 2.98 1.59 8.02 17.6
MW4 11/17/22 <0.100 0.335 0.00618 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.34 7.47 91.09 0.28 -41 1.53 7.2 14.2
MW4 08/27/24 Not on sampling list DERR 10/30/2023 6.74 91.82
MW5 11/02/10 0.24 1 1.2 0.0022 <0.005 <0.001 <0.003 <0.005 0.0022 2.44 8.59 89.22
MW5 05/18/11 2.8 3.9 0.97 0.42 2.5 0.12 1.1 <0.10 0.42 11.81 7.62 90.19
MW5 10/31/11 7.7 0.53 0.71 0.62 0.6 0.13 1.2 0.007 0.62 11.50 7.73 90.08 0.53 -173 1.25 18.5
MW5 04/05/12 3.5 0.58 0.68 0.52 0.17 0.006 0.044 <0.005 0.52 5.50 4.68 93.13 0.26 NA 1.72 7.16 13.1
MW5 11/08/12 3.2 0.56 1.2 0.21 <0.025 0.044 0.25 <0.025 0.21 5.46 9.29 88.52
MW5 06/26/13 0.63 1.5 0.419 0.315 0.007 <0.004 0.08 <0.004 0.315 2.95 8.20 89.61
MW5 03/31/14 1.9 6 0.34 0.16 <0.005 0.001 0.035 <0.005 0.16 8.44 NA
MW5 11/07/14 2.5 0.73 0.45 <0.025 <0.005 0.074 <0.025 0.45 3.75 9.43 88.38
MW5 11/11/16 2.42 0.647 0.714 0.129 <0.050 <0.010 <0.030 <0.050 0.129 3.91 9.29 88.52
MW5 11/16/2017 1.42 0.687 0.772 0.146 0.00306 <0.00100 0.0133 <0.00500 0.146 3.04 9.17 88.64
MW5 06/14/2018 1.62 2.17 0.29 0.17 <0.00500 <0.00500 <0.0150 <0.0250 0.17 4.25 8.13 89.68 0.58 -20 2.06 7.4 18.9
MW5 12/20/2018 0.929 1.06 0.585 0.0398 <0.005 <0.005 <0.0150 <0.0250 0.0398 2.61 9.28 88.53
MW5 07/20/19 1.18 1.86 0.0856 0.0399 0.00108 <0.00100 0.00306 <0.00500 0.0399 3.17 8.26 89.55
MW5 04/09/21 0.737 6.96 0.0676 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 7.76 8.86 88.95 1.65 52 4.69 7.09 14.1
MW5 12/10/21 2.06 0.738 0.762 0.0422 0.00113 <0.00100 <0.00300 <0.00500 0.0422 3.60 9.50 88.31 1.54 41 3.97 7.12 13.7
MW5 07/12/22 1.78 0.282 0.223 0.0624 <0.005 <0.005 <0.00300 <0.025 0.0624 2.35 7.90 89.91 1.58 2.07 8.18 22.2
MW5 11/18/22 3.03 0.653 0.686 0.0519 <0.005 <0.005 <0.0150 <0.025 0.0519 4.42 9.32 88.49 1.74 -54 2.22 7.44 10.6
MW5 08/27/24 1.67 1.33 0.59 0.0403 <0.0100 <0.0100 <0.0300 <0.0500 0.0403 3.63 6.08 91.73 1.08 2.5 7.34 19.5
MW6 11/02/10 <0.1 0.48 <0.001 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.48 6.65 92.17 4 -1 1.3 7.72 17.9
MW6 05/18/11 <0.1 0.34 <0.001 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.34 5.76 93.06
MW6 10/31/11 <0.100 <0.100 <0.001 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.00 7.56 91.26 0.35 -210 1.46 20.4
MW6 04/05/12 <0.100 <0.100 <0.001 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.00 6.82 92.00 0.36 NA 1.75 7.14 12.6
MW6 11/08/12 <0.100 <0.400 <0.001 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.00 7.84 90.98
MW6 06/26/13 <0.5 <0.5 <0.002 <0.002 <0.002 <0.002 <0.006 <0.002 0.002 0.00 6.99 91.83
MW6 03/31/14 <0.1 0.34 <0.001 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.34 7.29 91.53 0.36 -137 3.27 7.1 13.1
MW6 11/07/14 <0.1 0.29 <0.001 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.29 8.29 90.53 2.01 -118 2.36 7.29 20.5
MW6 11/11/16 <0.1 0.358 <0.001 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.36 8.03 90.79 1.37 -138 3.62 6.42 20
MW6 11/15/2017 <0.100 0.264 <0.00100 <0.001 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.26 7.98 90.84 4.49 -72.5 0.97 6.7 19.4
MW6 06/14/2018 <0.100 0.35 <0.00100 <0.001 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.35 6.88 91.94 0.52 -72 1.3 7.5 16.2
MW6 12/20/2018 <0.100 0.433 <0.001 0.00135 <0.001 <0.001 <0.003 <0.005 0.00135 0.43 8.08 90.74 3.46 89.7 7.21 7.55 15.2
MW6 07/20/19 <0.100 0.275 <0.001 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.28 7.04 91.78
MW6 04/09/21 <0.100 0.29 <0.00100 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.29 6.92 91.90 3.27 120 1.51 7.62 14.8
MW6 12/08/21 <0.100 0.376 <0.00100 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.38 8.20 90.62 3.01 118 1.98 7.49 13.9
MW6 07/12/22 <0.100 0.231 <0.00100 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.23 6.83 91.99 2.43 0.841 7.66 22.2
MW6 11/18/22 <0.100 0.255 <0.00100 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.26 7.84 90.98 1.63 51 1.16 7.44 13.9
MW6 08/27/24 Not on sampling list DERR 10/30/2023 6.71 92.11
CommonCents Harrisville Page 2 of 4 10/22/2024
TABLE 2
CUMMULATIVE GROUNDWATER ANALYTICAL RESULTS and FIELD PARAMETERS
CommonCents, 907 North 400 East, Harrisville, Utah
Facility 1200401, Release MSB
Well TPH GRO*TPH DRO*Ethyl Total Benzene Total Mass Depth to Groundwater
ID Date (C6-C10)(C10-C28)*MtBE Benzene Toluene Benzene Xylenes Naphthalene Mass Water Elevation DO ORP Conductivity pH Temperature
(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/l)(feet)(ft above datum)(mg/L)(mv)(ms/m)© or (F)
MW7 11/02/10 <0.1 0.45 <0.001 0.0011 <0.005 <0.001 <0.003 <0.005 0.0011 0.45 5.80 94.00
MW7 05/18/11 <0.1 <0.10 <0.001 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.00 5.35 94.45
MW7 10/31/11 <0.100 <0.100 <0.001 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.00 6.71 93.09 0.52 -136 1.34 17.7
MW7 04/05/12 <0.100 <0.100 <0.001 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.00 5.21 94.59 2.4 NA 1.52 7.15 12
MW7 11/08/12 <0.100 <0.100 <0.001 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.00 6.78 93.02
MW7 06/26/13 <0.5 <0.5 <0.002 <0.002 <0.002 <0.002 <0.006 <0.002 0.002 0.00 5.97 93.83
MW7 03/31/14 <0.1 <0.1 <0.001 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.00 5.48 94.32 3.62 -15 3.41 7.1 11.5
MW7 11/07/14 <0.1 <0.1 <0.001 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.00 7.53 92.27
MW7 11/11/16 <0.1 0.166 <0.001 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.17 6.89 92.91 3.27 -20 3.55 6.53 19
MW7 11/16/2017 <0.100 0.12 <0.00100 <0.001 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.12 7.58 92.22 3.34 -61 1.09 7.88 15.8
MW7 06/14/2018 <0.100 <0.100 <0.00100 <0.001 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.00 4.92 94.88
MW7 12/20/2018 <0.100 0.103 <0.001 <0.001 <0.001 <0.001 <0.003 <0.005 0.001 0.10 7.14 92.66 5.83 96.3 1.02 7.86 12.3
MW7 07/20/19 <0.100 <0.100 <0.00100 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.00 6.03 93.77
MW7 04/09/21 <0.100 0.105 <0.00100 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.11 5.92 93.88 5.86 128 1.66 7.68 11.7
MW7 12/08/21 <0.100 0.119 <0.00100 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.12 7.60 92.20 4.27 136 1.87 7.61 10.8
MW7 07/12/22 <0.100 <0.100 <0.00100 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.00 7.27 92.53 4.14 2.1 7.39 21.1
MW7 11/18/22 <0.100 0.126 <0.00100 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.13 7.47 92.33 4.26 -60 1.45 7.37 11.4
MW7 08/27/24 Not on sampling list DERR 10/30/2023 6.06 93.74
MW8 11/02/10 <0.10 0.12 0.011 <0.005 <0.005 <0.001 <0.003 <0.005 0.005 0.13 6.70 91.81
MW8 05/18/11 <0.10 <0.10 0.0014 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.00 5.93 92.58
MW8 10/31/11 <0.100 <0.100 <0.001 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.00 7.27 91.24 2.31 175 1.47 14.6
MW8 04/05/12 <0.100 <0.100 <0.001 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.00 5.58 92.93 0.7 NA 1.8 7.23 11.2
MW8 11/08/12 <0.100 <0.100 <0.001 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.00 7.33 91.18 0.7
MW8 06/26/13 <0.5 <0.5 <0.002 <0.002 <0.002 <0.002 <0.006 <0.002 0.002 0.00 7.20 91.31 0.7
MW8 03/31/14 <0.1 <0.1 0.0011 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.00 6.75 91.76 NA -138 2.46 7.8 11.8
MW8 11/07/14 <0.1 <0.1 <0.001 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.00 6.75 91.76
MW8 11/11/16 <0.1 0.35 0.0565 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.41 7.59 90.92
MW8 11/16/2017 <0.100 <0.100 <0.00100 <0.001 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.00 7.94 90.57 12.4 49 1.26 8.32 14.7
MW8 06/14/2018 <0.100 <0.100 <0.00100 <0.001 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.00 7.21 91.30 8.8 4 1.8 7.74 13.6
MW8 12/20/2018 <0.100 <0.100 <0.001 <0.001 <0.001 <0.001 <0.003 <0.005 0.001 0.00 7.87 90.64 3.75 116 1.33 8.18 13.5
MW8 07/20/19 <0.100 <0.100 <0.00100 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.00 7.25 91.26
MW8 04/09/21 <0.100 <0.100 <0.00100 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.00 6.64 91.87 2.7 114 1.44 7.93 11.2
MW8 12/08/21 <0.100 0.138 <0.00100 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.14 8.21 90.30 2.9 154 1.84 7.74 10.5
MW8 11/18/22 <0.100 0.138 <0.00100 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.14 7.97 90.54 2.27 34 1.32 7.57 11.1
MW8 08/27/24 Not on sampling list DERR 10/30/2023 98.51
MW9 11/17/11 <0.5 <0.5 0.599 <0.002 <0.004 <0.002 <0.006 <0.002 0.002 0.60 8.07 90.66
MW9 05/18/11 0.44 0.13 0.77 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 1.34 7.12 91.61
MW9 10/31/11 0.42 <0.100 0.83 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 1.25 9.41 89.32 0.5 -152 2.08 16.3
MW9 04/05/12 0.35 0.19 0.46 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 1.00 6.47 92.26 0.41 NA 2.54 7.12 11.6
MW9 11/08/12 0.35 0.14 0.68 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 1.17 8.85 89.88
MW9 06/26/13 <0.5 <0.5 0.403 <0.001 <0.002 <0.002 <0.006 <0.002 0.001 0.40 9.18 89.55
MW9 03/31/14 <0.1 0.3 0.29 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.59 8.14 90.59 0.35 -114 4.1 6.9 12
MW9 11/07/14 0.15 0.13 0.3 <0.005 <0.025 <0.005 <0.015 <0.025 0.005 0.58 10.37 88.36
MW9 11/11/16 <0.100 0.194 0.0877 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.28 9.10 89.63 2.77 -90 11.32 6.76 17
MW9 11/16/2017 <0.100 0.165 0.0418 <0.001 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.21 9.27 89.46 7.42 -86 2.45 7.47 14.4
MW9 06/14/2018 0.107 0.221 0.134 <0.001 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.46 10.00 88.73 2.11 4.8 3.7 7.2 14.4
MW9 12/20/2018 <0.100 0.1 0.0383 <0.001 <0.001 <0.001 <0.003 <0.005 0.001 0.17 9.35 89.38 5.23 123.9 3.21 7.49 14.1
MW9 07/20/19 0.2 0.1 0.1260 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.43 9.22 89.51
MW9 04/09/21 0.101 <0.200 0.0914 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.19 7.77 90.96 2.18 141 2.26 7.25 13.6
MW9 12/08/21 <0.100 0.132 0.0195 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.15 9.97 88.76 1.68 154 2.36 7.29 12.7
MW9 07/12/22 0.13 0.136 0.0793 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.35 8.44 90.29 1.06 3.67 6.87 25
MW9 11/17/22 0.2 0.115 0.1 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.42 9.12 89.61 1 -31 1.74 6.96 16.5
MW9 08/27/24 <0.100 0.125 0.0474 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.17 8.24 90.49 0.44 2.95 7.33 17.9
CommonCents Harrisville Page 3 of 4 10/22/2024
TABLE 2
CUMMULATIVE GROUNDWATER ANALYTICAL RESULTS and FIELD PARAMETERS
CommonCents, 907 North 400 East, Harrisville, Utah
Facility 1200401, Release MSB
Well TPH GRO*TPH DRO*Ethyl Total Benzene Total Mass Depth to Groundwater
ID Date (C6-C10)(C10-C28)*MtBE Benzene Toluene Benzene Xylenes Naphthalene Mass Water Elevation DO ORP Conductivity pH Temperature
(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/l)(feet)(ft above datum)(mg/L)(mv)(ms/m)© or (F)
MW10 05/20/11 0.14 0.25 0.075 <0.001 <0.005 0.0036 0.032 <0.005 0.001 0.50 9.81 88.41
MW10 10/31/11 <0.100 <0.100 <0.001 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.00 8.28 89.94 0.74 -95 2.93 14.6
MW10 04/05/12 <0.100 <0.100 <0.001 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.00 6.27 91.95 1.22 NA 3.61 7.19 10.1
MW10 11/08/12 <0.100 <0.100 0.081 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.08 8.19 90.03
MW10 06/26/13 <0.5 <0.5 0.072 <0.001 <0.002 <0.002 <0.006 <0.002 0.001 0.07 8.54 89.68
MW10 03/31/14 <0.1 <0.1 0.067 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.07 7.62 90.60 0.84 -123 3.2 7.4 10.8
MW10 11/07/14 <0.1 0.19 0.066 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.26 9.24 88.98 1.22 -140 2.67 7.39 13.9
MW10 11/11/16 <0.1 <0.30 <0.001 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.00 8.34 89.88 5.47 -129 10.07 6.41 14.1
MW10 11/15/2017 <0.100 0.123 0.0412 <0.001 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.16 8.59 89.63
MW10 06/14/2018 <0.100 <0.100 0.0397 <0.001 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.04 8.71 89.51
MW10 12/20/2018 <0.100 <0.100 0.0406 <0.001 <0.001 <0.001 <0.003 <0.005 0.001 0.04 8.71 89.51 4.06 102.5 2.04 8.09 12.9
MW10 07/20/19 <0.100 <0.100 0.0233 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.02 8.59 89.63
MW10 04/09/21 <0.100 <0.100 0.0247 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.02 7.54 90.68 2.98 78 1.44 7.72 9
MW10 12/08/21 <0.100 0.139 0.0193 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.16 8.98 89.24 2.51 83 1.32 7.54 9.2
MW10 07/12/22 <0.100 0.139 0.0248 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.16 8.05 90.17 1.74 3.35 7.18 25.5
MW10 11/18/22 <0.100 <0.100 0.028 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.03 8.65 89.57 2.48 -72 1.83 7.61 8.6
MW10 08/27/24 Not on sampling list DERR 10/30/2023 7.21 91.01
MW11 05/20/11 <0.10 0.81 <0.001 <0.001 <0.0050 <0.001 0.0056 <0.005 0.001 0.82 13.46 79.57
MW11 10/31/11 <0.100 <0.100 <0.001 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.00 6.15 86.88 0.3 -230 1.95 15.4
MW11 04/05/12 <0.100 <0.100 0.0065 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.01 4.95 88.08 0.39 NA 1.76 7.2 10
MW11 11/08/12 <0.100 0.14 0.0045 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.14 6.20 86.83
MW11 06/26/13 <0.5 <0.5 <0.002 <0.002 <0.002 <0.002 <0.006 <0.002 0.002 0.00 6.51 86.52
MW11 03/31/14 <0.1 <0.1 <0.001 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.00 5.43 87.60 0.36 -181 2.4 7.9 10.5
MW11 11/07/14 <0.1 0.2 <0.001 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.20 7.08 85.95
MW11 12/20/2018 <0.100 0.29 <0.001 <0.001 <0.001 <0.001 <0.003 <0.005 0.001 0.29 6.49 86.54
MW11 07/20/19 <0.100 <0.100 <0.00100 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.00 6.55 86.48
MW11 04/09/21 <0.100 0.26 <0.00100 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.26 5.81 87.22 2.52 71.8 1.37 7.63 10.3
MW11 12/08/21 <0.100 0.181 <0.00100 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.18 6.26 86.77 2.41 79 1.27 7.21 9.8
MW11 07/12/22 <0.100 <0.100 <0.00100 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.00 5.58 87.45 0.6 3.51 8.27 21.6
MW11 11/17/22 <0.100 0.125 <0.00100 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.13 7.93 85.10 2 -152 1.57 7.62 15
MW11 08/27/24 <0.100 <0.100 <0.00100 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.00 6.24 86.79 0.81 3.03 7.2 20
MW14 11/11/16 <0.1 0.311 0.0206 <0.001 <0.005 <0.001 <0.003 <0.005 0.001 0.33 10.08 88.95 2.46 -132 1.1 8.09 12.4
MW14 11/16/2017 <0.100 0.199 0.0128 <0.001 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.21 10.11 88.92 7.6 -66 0.72 7.91 13.1
MW14 06/14/2018 <0.100 <0.100 0.00157 <0.001 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.00 8.38 90.65 1.8 -2.5 0.4 7.81 13.3
MW14 12/20/2018 <0.100 0.184 0.0094 <0.001 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.19 9.99 89.04 6.64 106.4 0.78 8.25 12.3
MW14 07/20/19 <0.100 <0.100 <0.00100 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.00 9.99 89.04
MW14 04/09/21 <0.100 0.148 0.00643 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 <0.00100 0.15 9.80 89.23 2.29 127 1.41 7.82 10.4
MW14 12/08/21 <0.100 0.117 0.00293 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.12 9.57 89.46 2.29 127 1.41 7.82 10.4
MW14 07/12/22 <0.100 <0.100 <0.00100 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.00 8.28 90.75 2.75 0.323 7.52 18.8
MW14 11/18/22 <0.100 0.105 0.00324 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.11 9.56 89.47 2.16 78 0.831 7.72 9.6
MW14 08/27/24 Not on sampling list DERR 10/30/2023 9.08 89.95
MW15 08/27/24 0.18 1.08 0.139 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 1.40 11.77 87.28 2.09 5.01 7.85 16.6
MW16 08/27/24 <0.100 0.529 0.033 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.56 8.77 88.59 0.45 1.48 7.45 21.1
MW17 08/27/24 <0.100 2.83 0.0322 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 2.86 8.57 89.10 0.38 2.23 7.27 21.4
RBCA Tier 1 Values mg/L 10 10 0.2 0.3 3 4 10 0.7
Utah ISL Values mg/L 1 1 0.2 0.005 1 0.7 10 0.7
GRO Gasoline Range Organics C6-C10 mg/L Milligrams per liter
DRO Diesel Range Organics C10-C28 ms/m Micro semens per meter
<0.001 Concentration was less than the detection limit shown DO Dissolved Oxygen
mv Millivolts Blank Not sampled not measured
GRO Mass DERR Wells 8-24 3.3 mg/l
Benzene Mass DERR Wells 8-24 0.044 mg/l
CommonCents Harrisville Page 4 of 4 10/22/2024
TABLE 3
DERR REQUIRED WELL SAMPLING GROUNDWATER ANALYTICAL RESULTS and FIELD PARAMETERS
CommonCents, 907 North 400 East, Harrisville, Utah
Facility 1200401, Release MSB
Well TPH GRO*TPH DRO*Ethyl Total Benzene Total Depth to Groundwater
ID Date (C6-C10)(C10-C28)*MtBE Benzene Toluene Benzene Xylenes Naphthalene Mass Mass Water Elevation DO ORP Conductivity pH Temperature
(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(feet)(ft above datum)(mg/L)(mv)(ms/m)(Fahrenheit)
Monitor Wells
HNW 08/27/24 <0.100 <0.100 <0.00100 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.53 6.20 0.23 1980 7.54 76.9
HNE 08/27/24 <0.100 <0.100 <0.00100 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0 0.00 6.20 0.08 1969 7.53 77.5
HSW 08/27/24 <0.100 <0.100 <0.00100 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.80 6.31 0.17 2029 7.49 79.2
HSE 08/27/24 <0.100 <0.100 <0.00100 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 1.00 6.29 0.11 1770 7.44 75.2
MW2 08/27/24 Not accessible day of sampling, car parked on well all day 9.17 89.48
MW3 08/27/24 1.42 0.848 0.694 <0.0200 <0.0200 <0.0200 <0.0600 <0.100 0.02 2.96 8.65 89.65 3.57 1.7 6.85 26.05
MW5 08/27/24 1.67 1.33 0.59 0.0403 <0.0100 <0.0100 <0.0300 <0.0500 0.0403 3.63 6.08 91.73 1.08 2.5 7.34 19.5
MW9 08/27/24 <0.100 0.125 0.0474 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.17 8.24 90.49 0.44 2.95 7.33 17.9
MW11 08/27/24 <0.100 <0.100 <0.00100 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.00 6.24 86.79 0.81 3.03 7.2 20
MW15 08/27/24 0.18 1.08 0.139 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 1.40 11.77 87.28 2.09 5.01 7.85 16.6
MW16 08/27/24 <0.100 0.529 0.033 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 0.56 8.77 88.59 0.45 1.48 7.45 21.1
MW17 08/27/24 <0.100 2.83 0.0322 <0.00100 <0.00100 <0.00100 <0.00300 <0.00500 0.001 2.86 8.57 89.10 0.38 2.23 7.27 21.4
RBCA Tier 1 Values mg/L 10 10 0.2 0.3 3 4 10 0.7
Utah ISL Values mg/L 1 1 0.2 0.005 1 0.7 10 0.7
GRO Gasoline Range Organics C6-C10 mg/L Milligrams per liter
DRO Diesel Range Organics C10-C28 ms/m Micro semens per meter
<0.001 Concentration was less than the detection limit shown DO Dissolved Oxygen
mv Millivolts Blank Not sampled or not measured
HNW HNE HSW HSE Tank Basin monitoring wells
CommonCents Harrisville Page 1 of 1 10/22/2024
TABLE 4
BENZENE and MTBE GROUNDWATER CONCENTRATIONS vs TIME
CommonCents, 907 North 400 East, Harrisville, Utah
Facility 1200401, Release MSB
-0.1
0
0.1
0.2
0.3
0.4
0.5
0.6
10
/
0
5
/
1
0
11
/
0
2
/
1
0
05
/
1
8
/
1
1
10
/
3
1
/
1
1
04
/
0
5
/
1
2
11
/
0
8
/
1
2
06
/
2
6
/
1
3
03
/
3
1
/
1
4
11
/
0
7
/
1
4
11
/
1
1
/
1
6
11
/
1
6
/
2
0
1
7
06
/
1
4
/
2
0
1
8
12
/
2
0
/
2
0
1
8
07
/
2
0
/
1
9
04
/
0
9
/
2
1
04
/
0
9
/
2
1
12
/
0
8
/
2
1
07
/
1
2
/
2
2
11
/
1
7
/
2
2
08
/
2
7
/
2
4
To
t
a
l

G
R
O

D
R
O

M
B
T
E
X
N

m
g
/
l
MW3 Groundwater Benzene Mass vs Time
Benzene
Linear (Benzene)
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
10
/
0
5
/
1
0
11
/
0
2
/
1
0
05
/
1
8
/
1
1
10
/
3
1
/
1
1
04
/
0
5
/
1
2
11
/
0
8
/
1
2
06
/
2
6
/
1
3
03
/
3
1
/
1
4
11
/
0
7
/
1
4
11
/
1
1
/
1
6
11
/
1
6
/
2
0
1
7
06
/
1
4
/
2
0
1
8
12
/
2
0
/
2
0
1
8
07
/
2
0
/
1
9
04
/
0
9
/
2
1
04
/
0
9
/
2
1
12
/
0
8
/
2
1
07
/
1
2
/
2
2
11
/
1
7
/
2
2
08
/
2
7
/
2
4
To
t
a
l

G
R
O

D
R
O

M
B
T
E
X
N

m
g
/
l
MW3 Groundwater MTBE Mass vs Time
MtBE
Linear (MtBE)
-0.1
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
11
/
0
2
/
1
0
05
/
1
8
/
1
1
10
/
3
1
/
1
1
04
/
0
5
/
1
2
11
/
0
8
/
1
2
06
/
2
6
/
1
3
03
/
3
1
/
1
4
11
/
0
7
/
1
4
11
/
1
1
/
1
6
11
/
1
6
/
2
0
1
7
06
/
1
4
/
2
0
1
8
12
/
2
0
/
2
0
1
8
07
/
2
0
/
1
9
04
/
0
9
/
2
1
12
/
1
0
/
2
1
07
/
1
2
/
2
2
11
/
1
8
/
2
2
08
/
2
7
/
2
4
To
t
a
l

G
R
O

D
R
O

M
B
T
E
X
N

m
g
/
l
MW5 Groundwater Benzene Mass vs Time
Benzene
Linear (Benzene)
0
0.2
0.4
0.6
0.8
1
1.2
1.4
11
/
0
2
/
1
0
05
/
1
8
/
1
1
10
/
3
1
/
1
1
04
/
0
5
/
1
2
11
/
0
8
/
1
2
06
/
2
6
/
1
3
03
/
3
1
/
1
4
11
/
0
7
/
1
4
11
/
1
1
/
1
6
11
/
1
6
/
2
0
1
7
06
/
1
4
/
2
0
1
8
12
/
2
0
/
2
0
1
8
07
/
2
0
/
1
9
04
/
0
9
/
2
1
12
/
1
0
/
2
1
07
/
1
2
/
2
2
11
/
1
8
/
2
2
08
/
2
7
/
2
4
To
t
a
l

G
R
O

D
R
O

M
B
T
E
X
N

m
g
/
l
MW5 Groundwater MTBE Mass vs Time
MtBE
Linear (MtBE)
CommonCents Harrisville Page 1 of 1 10/22/2024
TABLE 5
GROUNDWATER ELEVATION VERSUS COC CONCENTRATIONS
CommonCents, 907 North 400 East, Harrisville, Utah
Facility 1200401, Release MSB

87.00
88.00
89.00
90.00
91.00
92.00
93.00
94.00
0
0.1
0.2
0.3
0.4
0.5
0.6
10
/
0
5
/
1
0
11
/
0
2
/
1
0
05
/
1
8
/
1
1
10
/
3
1
/
1
1
04
/
0
5
/
1
2
11
/
0
8
/
1
2
06
/
2
6
/
1
3
03
/
3
1
/
1
4
11
/
0
7
/
1
4
11
/
1
1
/
1
6
11
/
1
6
/
2
0
1
7
06
/
1
4
/
2
0
1
8
12
/
2
0
/
2
0
1
8
07
/
2
0
/
1
9
04
/
0
9
/
2
1
04
/
0
9
/
2
1
12
/
0
8
/
2
1
07
/
1
2
/
2
2
11
/
1
7
/
2
2
08
/
2
7
/
2
4
GW

E
l
e
v
a
t
i
o
n
Groundwater Elevation Versus Benzene
Concentration MW3
Benzene
Groundwater Elevation
Linear (Benzene)
85.00
86.00
87.00
88.00
89.00
90.00
91.00
92.00
93.00
94.00
-0.1
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
11
/
0
2
/
1
0
05
/
1
8
/
1
1
10
/
3
1
/
1
1
04
/
0
5
/
1
2
11
/
0
8
/
1
2
06
/
2
6
/
1
3
03
/
3
1
/
1
4
11
/
0
7
/
1
4
11
/
1
1
/
1
6
11
/
1
6
/
2
0
1
7
06
/
1
4
/
2
0
1
8
12
/
2
0
/
2
0
1
8
07
/
2
0
/
1
9
04
/
0
9
/
2
1
12
/
1
0
/
2
1
07
/
1
2
/
2
2
11
/
1
8
/
2
2
08
/
2
7
/
2
4
GW

E
l
e
v
a
t
i
o
n
Be
n
z
e
n
e

m
g
/
l
Date
Groundwater Elevation Versus Benzene
Concentration MW5
Benzene
Groundwater
Elevation
Linear (Benzene)
87.00
88.00
89.00
90.00
91.00
92.00
93.00
94.00
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
10
/
0
5
/
1
0
11
/
0
2
/
1
0
05
/
1
8
/
1
1
10
/
3
1
/
1
1
04
/
0
5
/
1
2
11
/
0
8
/
1
2
06
/
2
6
/
1
3
03
/
3
1
/
1
4
11
/
0
7
/
1
4
11
/
1
1
/
1
6
11
/
1
6
/
2
0
1
7
06
/
1
4
/
2
0
1
8
12
/
2
0
/
2
0
1
8
07
/
2
0
/
1
9
04
/
0
9
/
2
1
04
/
0
9
/
2
1
12
/
0
8
/
2
1
07
/
1
2
/
2
2
11
/
1
7
/
2
2
08
/
2
7
/
2
4
GW

E
l
e
v
a
t
i
o
n

MT
B
E

m
g
/
l
Date
Groundwater Elevation Versus MTBE
Concentration MW3
MtBE
Groundwater
Elevation
85.00
86.00
87.00
88.00
89.00
90.00
91.00
92.00
93.00
94.00
0
0.2
0.4
0.6
0.8
1
1.2
1.4
11
/
0
2
/
1
0
05
/
1
8
/
1
1
10
/
3
1
/
1
1
04
/
0
5
/
1
2
11
/
0
8
/
1
2
06
/
2
6
/
1
3
03
/
3
1
/
1
4
11
/
0
7
/
1
4
11
/
1
1
/
1
6
11
/
1
6
/
2
0
1
7
06
/
1
4
/
2
0
1
8
12
/
2
0
/
2
0
1
8
07
/
2
0
/
1
9
04
/
0
9
/
2
1
12
/
1
0
/
2
1
07
/
1
2
/
2
2
11
/
1
8
/
2
2
08
/
2
7
/
2
4
GW

E
l
e
v
a
t
i
o
n
Be
n
z
e
n
e

m
g
/
l
Date
Groundwater Elevation Versus MTBE
Concentration MW5
MtBE
Groundwater Elevation
Linear (MtBE)
CommonCents Harrisville Page 1 of 1 10/22/2024

ATTACHMENT A

195 North 1950 West • Salt Lake City, UT
Mailing Address: P.O. Box 144840 • Salt Lake City, UT 84114-4840
Telephone [phone] • Fax [phone] • T.D.D. [phone]
www.deq.utah.gov
Printed on 100% recycled paper
State of Utah
SPENCER J. COX
Governor

DEIDRE HENDERSON
Lieutenant Governor
Department of
Environmental Quality

Kimberly D. Shelley
Executive Director

DIVISION OF ENVIRONMENTAL
RESPONSE AND REMEDIATION

Brent H. Everett
Director
ERRL-0394-23
October 30, 2023
CERTIFIED MAIL
RETURN RECEIPT REQUESTED
Jim Sachs
Moyle Petroleum Company
2504 West Main Street
Rapid City, South Dakota 57702
Re:Additional Sampling Requirements Following Site Closure Review
Common Cents, located at 907 North 400 East, Harrisville, Utah
Facility Identification No. 1200401, Release Site MSB
Dear Mr. Sachs:
The Division of Environmental Response and Remediation (DERR) completed a site closure
review of the Common Cents, leaking underground storage tank (LUST) site, located at the above-
referenced facility. The review included historic reports in the case file, including the Johnston
Leigh, Inc. (JLI) Subsurface Investigation Report 2016 and 2022 Groundwater Monitoring Results,
No Further Action Review report, submitted to the DERR in February 2016 and March 2023,
respectively.

The review indicates that historic soil sampling data is below the DERR’s Initial Screening
Level (ISL) cleanup standard, while groundwater contamination remains at the site exceeding the
ISL standard.

Conclusions drawn from the DERR review are:

1. Dissolved-phase petroleum-impacted groundwater (Plume) above the ISL remains
for total petroleum hydrocarbons, gasoline range organics (TPH-GRO), benzene and
methyl-tertiary butyl-ether (MTBE) in and about monitoring wells (MWs) MW3 and
MW5. The depth to groundwater is about 8-9’ below grade (see enclosed Figure 1,
Site Map with Groundwater Monitoring Well Locations, DERR, 2023).

2. The Plume has an undefined southwestern boundary, and a western boundary that is
defined between MW-5 and MW-11, with more than 160’ between them. The
undefined Plume area appears to be on third party land. According to the Weber
County Recorder’s Office, Common Cents is on Parcel 110270126 and owned by
Common Cents Harrisville, LLC, while Parcel 110270123, bounding Common
Facility ID# 1200401
Page 2
Cents on the south and west, is owned by Flying J Inc. (see enclosed Figure 2, Weber
County Parcel Map).
Therefore, more work is needed before site closure can be considered:
1. Determine the limits of the Plume. Install additional MWs as needed and obtain soil
samples from the MW borings. Samples collected shall be analyzed for total
petroleum hydrocarbons, diesel range organics (TPH-DRO), TPH-GRO, benzene,
toluene, ethyl-benzene, xylene, naphthalene (BTEXN) and MTBE.
2. Obtain one round of samples from underground storage tank observation wells
HNW, HSW, HNE and HSE. Collected groundwater samples shall be analyzed for
TPH-DRO, TPH-GRO, BTEXN and MTBE.

3. Continue groundwater monitoring from MW2, MW3, MW5, MW9, MW11 and
newly placed MWs for four quarters. Samples collected shall be analyzed for TPH-
DRO, TPH-GRO, BTEXN and MTBE.
4. Provide a report of the findings from Items 1 and 2 above as well as the results from
the first round of quarterly groundwater monitoring as identified in Item 3 above, in
accordance with Utah Admin. Code R311-211 and R311-202. Individual reports
shall also be submitted following the subsequent quarterly monitoring events
referenced in Item 3.

According to Utah Code R311-202 and R311-211, the DERR requires that Moyle Petroleum
Company provide a report of findings for Item 4 above, within 120 days of receipt of this letter.

Subsequent quarterly groundwater monitoring will follow, with reports due 30 days
following the respective field events.
If you have any questions, please contact Mark Crim, the DERR project manager, at
[phone].
Sincerely,
Brent H. Everett, Director
Division of Environmental Response and Remediation
BHE/MEC/rr

Enclosure(s): Figure 1, Site Map with Groundwater Monitoring Well Locations, DERR, 2023
Figure 2, Weber County Parcel Map
cc: Brian Cowan, B.S., M.P.H., Director, Weber-Morgan Health Department
Leigh Beem, Johnston Leigh, Inc.
Figure 1: Site Map with Groundwater Monitoring Well Locations
(from Johnston Leigh Inc., Figure 2, 2022)

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SITE MAP
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CommonCents
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Harrisville Utah
Figure 2: Weber County Parcel Map

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ATTACHMENT B

2024

JOHNSTON LEIGH INC
LEIGH BEEM
Johnston Leigh Inc. Standard Operating Procedure
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SOP 1 Sample Documentation ___________________________________________________ 2
SOP 2 Surface and Subsurface Soil Sampling _______________________________________ 3
SOP 3 PRE-PACK WELL INSTALLATION AND SAMPLING _______________________________ 5
SOP 4 Slug Test _______________________________________________________________ 9
SOP 5 Sub-Slab Air Sampling ___________________________________________________ 10
SOP 6 Decontamination _______________________________________________________ 11
SOP 7 FIELD SCREENING PHOTO IONIZATION DETECTOR (PID) ________________________ 12
SOP 8 EQUIPMENT CALIBRATION _______________________________________________ 13
SOP 9 SAMPLING MANAGEMENT CHAIN OF CUSTODY ______________________________ 14
SOP 10 INVESTIGATION DERIVED WASTE _________________________________________ 16

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SOP 1 Sample Documentation
1.0 Sample Data Point
The Sample Data Point (SDP) is the unique ID for a sample location. An individual SDP may
include surface soil samples, soil boring samples and groundwater sample(s). Having one SDP
allows management; retrieval and query of analytical results under one XYZ coordinate for
multiple samples and media type collected at an individual SDP.

Each SDP will be designated as “S” for “soil”; and a sequential number indicating the location
where the sample(s) were collected. For instance, S1-1 is SDP number 1 at soil boring 1. The
individual sample ID for surface soil, subsurface soil and groundwater samples are described
below.
2.0 Surface Soil
The surface soil sample designation will consist of a string of letters and numbers. The letters
“SS” is the designation for “surface soil”. Following the “SS”, the soil boring number will be
listed. For instance, SS1-1 would designate surface soil sample #1 collected at SDP #1 at soil
boring 1.
3.0 Subsurface Soil Sample
The subsurface soil sample designation will consist of a string of letters and numbers similar to
the formatting for surface soil. The letters “SB” is the designation for soil boring. Following the
“SB”, the soil boring number will be listed. Following the soil boring number will be the SDP
number at that location. Lastly the final number in the sample ID will be the depth of the
sample. For instance, SB1-1-5 would designate a soil sample collected from soil boring at SDP
#1 at soil boring 1 and at a depth of 5 feet below ground surface (BGS).
4.0 Groundwater Sample
A groundwater sample collected from the well will be designated using the following letters and
numbers. The letters “GW” is the designation for groundwater. Following the “GW”, the well ID
will be listed followed by the date. For instance, GW1-010121 would designate a groundwater
sample collected from well 1 on 01/01/2021.
5.0 Slug Test
A slug test performed at a well will be referenced in the database management system in the
same manner as the soil and groundwater samples. This will allow the selection of the calculated
K value derived from the slug test from the same XYZ data management system and contouring
the results. The letter “K” is the designation for hydraulic conductivity value, followed by the well
number and date. For instance, K1-010121 would designate a slug test K at well 1 on 01/01/2021.

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SOP 2 Surface and Subsurface Soil Sampling
1.0 Surface Soil
Surface soil samples are designated as those samples collected no more than 0.5 feet in depth.
A one-foot square area will be located on the ground surface and any debris or vegetation will
be removed from within the area. The surface soil sample will be collected with a
decontaminated stainless steel or aluminum trowel and placed directly in the sample containers.
No mixing of the soil will occur. If more than one sample container is filled, then the soil aliquot
will be evenly distributed to all the containers from the sample depth within the one foot area.

A label with the subsurface soil sample ID will be attached to the glass jars and placed inside a
labeled ziplock baggie. The sample will be retained inside a cooler containing ice enclosed in a
plastic bag.

After the surface soil sample is collected, the sampling trowel will be decontaminated using the
three-bucket wash system consisting of washing the trowel in low phosphate soap with tap
water, followed by a triple rinse in tap water and one final triple rinse in deionized water. The
trowel will be allowed to air dry before proceeding to the next soil sample location.
2.0 Subsurface Soil
The Geoprobe® Dual Tube 35 (DT35) soil sampling system will be used to collect soil samples.
The DT35 system will collect continuous soil core samples from ground surface to total depth of
each soil boring. A 3.5-inch outside diameter (OD) rod is driven into the ground as an outer
casing. The outer rods receive the driving force of the hammer. The second smaller set of
3.25-inch OD rods is placed inside the outer casing through which the soil samples are
recovered. A cutting show is treaded into the leading end of the outer rod string. When the
outer rods are driven into the subsurface, the cutting shoes shears a 2.125-inch OD soil core
inside a clear plastic liner that is attached to the smaller inner rods. Once filled, the liner with
the soil sample is removed from the bottom of the outer casing by lifting the inner rods.

Sampling soil from a cased hole is advantageous in that there is no side wall slough into the
open boring. Additionally, perched groundwater is isolated from the soil core eliminating
potential cross contamination of soil with perched water. Each boring will be advanced to first
encountered groundwater. The final depth most likely will be 15-20 feet below ground surface.

The sample depth may be determined by the results of the Laser Induced Fluorescence (LIF)
and PID measurements. The SOP for LIF is included in SOP 2. The SOP for PID screening is
included in SOP 6.

The LIF results will be used to identify the greatest concentration of petroleum hydrocarbons in
the soil borings. The highest RE% value for each boring will be collected for analytical testing.
The LIF target sample depth will be removed from the 2.125-inch diameter clear plastic sleeve
by cutting the sleeve along the axis and placing the sample depth into sample jars. The sample
jar(s) will be labeled and placed inside a labeled ziplock baggie. The sample will be retained
inside a cooler containing ice enclosed in a plastic bag.

The soil exhibiting the highest PID value for each boring may be collected if the depth does not
coincide with the highest %RE. The PID target sample depth will be removed from the 2.125-
inch diameter clear plastic sleeve by cutting the sleeve along the axis and placing the sample
depth into sample jars. The sample jar(s) will be labeled and placed inside a labeled ziplock
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baggie. The sample will be retained inside a cooler containing ice enclosed in a plastic bag.

Decontamination of the DT35 outer and inner rods will be accomplished following
decontamination procedures outline in SOP 6.

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SOP 3 PRE-PACK WELL INSTALLATION AND
SAMPLING
1.0 Well Installation
The DT35 dual casing system will also be used to install small diameter pre-pack well screen
and blank riser for the purpose of collecting groundwater samples and measuring groundwater
levels (calculating hydraulic gradient.

An expendable cutting shoe will be used which allows setting prepacked well screen and blank
riser through the DT35 outer casing. After the collection of the continuous soil core samples to
the total depth, a 2-inch diameter prepack well screen five feet in length is lowered to the bottom
of the outer casing. Blank casing is flush threaded to the pre-pack screen up to the ground
surface. Pressure is exerted on the well riser while the outer casing is slowly raised. This
dislodges the expendable cutting show and the well stays at the total depth while the outer
casing is removed. The well head will be protected by either placing a 6-inch OD stove pipe
casing over the well pipe and cementing it into a 12-inch OD hole excavated by hand using a
shovel; or surface completion of well head inside a 8-inch diameter circular vault sealed with a
concrete apron.
2.0 Groundwater Sampling
This SOP provides a description of field procedures related to collection of groundwater
samples. Sampling activities performed in the monitoring wells shall be conducted in an order
of least-to-most contaminated to minimize the potential for cross-contamination. If free product
is encountered in a monitoring well, a groundwater sample at that location will not be collected.

Specific field information regarding general activities, water level measurement, and sampling
activities will be recorded in the field on specific forms. Forms for recording field information
include:
• Form A Daily Field Log,
• Form B Groundwater Gauging Log, and
• Form C Groundwater Sampling Log.

3.0 Well Gauging
Procedures for groundwater level measurements and LNAPL thickness measurements in
monitoring wells are provided in this section. Based on the background information (if present)
on the monitoring wells, it is known which wells have or have had measurable LNAPL in the
past. These wells will only be gauged using an oil/water interface probe. The following
procedure shall be used for a well with potential LNAPL:
• Lower the probe of a decontaminated electronic sounding oil/water interface meter into
the monitoring well until the meter indicates the probe has contacted the oil/groundwater
surface.
• Measure the depth to product and depth to water from the survey reference mark (on the
polyvinyl chloride [PVC] well casing) to the nearest 0.01 foot. If no mark is present,
measure the depth to product and depth to water to the north side of the casing.
• Record the oil and water level measurements and total well depth on Form B.
• Decontaminate the probe and tape in accordance with the decontamination procedures
outlined in SOP 5.

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The following procedure shall be used for a well with no LNAPL:
• Begin with the wells that historically have had the lowest concentration of dissolved
BTEX (i.e, clean to dirty). Lower the decontaminated electronic water level meter into
the monitoring well until the meter indicates the probe has contacted the groundwater
surface.
• Measure the depth to water from the survey reference mark (on the PVC well casing) to
the nearest 0.01 foot. If no mark is present, measure the depth to water to the north side
of the casing.
• Record the water level measurements and total well depth on Form B.
• Decontaminate the probe and tape in accordance with the decontamination procedures
outlined in SOP 5.
4.0 Groundwater Sampling
A groundwater sample collected from the well will be designated using the following letters and
numbers. The letters “GW” is the designation for groundwater. Following the “GW”, the well ID
will be listed followed by the date. For instance, GW1-010121 would designate a groundwater
sample collected from well 1 on 01/01/2021.

Groundwater purging and sampling may be performed utilizing a disposable bailer, a dedicated
bladder pump, or a peristaltic pump. These data are recorded on Form C.
4.1 Field Equipment Calibration
Field equipment is used during sampling activities to measure groundwater elevations, collect
samples, and measure field parameters. Calibration of the multi-meter is done each day prior to
collecting groundwater parameters.

In general, calibration and operation of all equipment used for collection of samples and field
parameters from monitoring wells will conform to the respective manufacturer’s specifications.
Instrument calibrations and calibration checks shall be recorded on Form C.

Field equipment function checks shall be performed in accordance with procedures described in
this section. Calibration of pH meters shall be performed to pH standards (4, 7, or 10 standard
units) bracketing the actual field measured value. The specific conductivity meter shall be
calibrated to one of three standards, 2,000, 6,000, or 10,000 micro Siemens per centimeter
(mS/cm), whichever is closer to the field measured value. Dissolved oxygen is calibrated using
the barometric pressure method outlined by the manufacturer. ORP calibration standard is 220
mv at 25○C.
5.0 Peristaltic Pump Sampling Procedures
The ¼-inch polyethylene tubing used to purge the groundwater is set in the mid-screen level in
each well. These wells will be sampled in accordance with EPA SOP Low Stress (Low Flow)
Purging and Sampling Procedure for The Collection of Groundwater Samples from Monitoring
Wells (US EPA, 1996 and 2010).
The well purging process for a monitoring well using a peristaltic pump consists of the following
steps:
1. Measurements of DO, SC, temperature, pH, and ORP will occur by way of probes that
are installed in a clear flow through cell. The pumps flow rate will be set to an
approximate flow rate of between 100-200 milliliters per minute (mL/min). The flow rate
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will be adjusted for long pulses of water, so one pump cycle will deliver a minimum of 40
mL of water as recommended by EPA Low-Stress Standard Operating Procedure (US
EPA, 2010).
2. Purge groundwater from the monitoring well into a bucket to check for potential sheen.
3. Record the parameters DO, SC, temperature, pH, and ORP at a frequency of 5 minute
intervals. Stabilization is considered to be achieved when three consecutive readings
are within the following limits:
• DO. 10% for values greater than 0.5 mg/L; if three DO values are less than 0.5
mg/L, consider the values stable;
• SC. 3%;
• Temperature. 3%;
• pH +- 0.2 unit; and
• ORP. +- 100 millivolts (mV).
4. Fill the sample bottles for BTEX first. Sample bottles for these analytes must be filled
such that there is no headspace in the bottle.
5. Continue to collect groundwater to fill all other sample bottles filling the VOC bottles first
(no headspace), SVOC second (no Headspace), metals third and any remaining COCs
fourth.
6. Purge water is containerized and transported to the refinery process wastewater
treatment system.
7. Record the sample description and required information on the chain-of-custody form.
6.0 Bailer Purging and Sampling Procedures
Well purging and sampling procedures will be performed using disposable bailers in wells that
do not contain dedicated sampling pumps. The procedure for sampling using disposable bailers
is provided below. The purge and sample data is recorded on Form C. The well purging
process for a monitoring well using a disposable bailer consists of the following steps:
1. Attach new nylon rope to a disposable bailer before well evacuation activities. Discard
the nylon rope after the monitoring well has been sampled.
2. Purge groundwater from the monitoring well into a bucket to gauge the volume of water
recovered. After purging each well volume, take field parameter measurements by
following these directions. Pour well water directly from the bailer into a sample cup and
measure temperature, pH, and specific conductance, dissolved oxygen and ORP with
the multi parameter meter. Record the groundwater parameter measurements on Form
C, after the readings on the meter have stabilized.
3. Bail three well casing volumes and record the volume bailed on Form C. Because the
wells are completed with a 2-inch casing, the following equation can be used to calculate
one casing volume:
(TD – DTW) X 0.163 = 1 casing volume in gallons
Where:
TD = total well depth
DTW = depth to water

4. Discharge purged water into an approved polyethylene drum. The purge water will be
discharged to the refinery process wastewater treatment system.

5. If the well is bailed dry before three well casing volumes have been evacuated, then
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record the volume bailed on Form C and allow the well to recover (no longer than 24
hours).
6. Once three well volumes have been removed (or purged dry and recovered 24 hours)
and the field parameters have been recorded, slowly lower the bailer into the monitoring
well to avoid agitation of the groundwater. Fill the sample bottles for VOC first (no
headspace), SVOC second (no Headspace), metals third and any remaining COCs
fourth. Sample bottles for these analytes must be filled such that there is no headspace
in the bottle.

7. Record the sample description and required information on the chain-of-custody form.

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SOP 4 Slug Test
1.0 Slug Test
A 10 PSI pressure transducer is threaded through a 2-inch well cap with rubber grommet that
seals the inside of the well. The pressure transducer is placed near the center of the well
screen (approximately 12 feet BGS). The well cap is fitted with a bicycle tire type valve to allow
pressurizing in inside of the well.
2.0 Pneumatic Test Apparatus
In pneumatic slug testing, the well head is sealed and air pressure or vacuum is used to change
the static water level. As air pressure in the well is increased or decreased, the water
level changes until the water pressure "up" and the air pressure "down" are equal. Once the
water level is stable, a release valve is quickly opened, instantaneously releasing the air
pressure or vacuum. The water level recovers without splashing and the pressure transducer
and data logger/computer record the changes in water level and time.

A slug test performed at a well will be referenced in the database management system in the
same manner as the soil and groundwater samples. This will allow the selection of the
calculated K value derived from the slug test from the same XYZ data management system.
The letter “K” is the designation for hydraulic conductivity value, followed by the well number
and date. For instance, K1-010121 would designate a slug test K value calculated from well 1
on 01/01/2021.

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SOP 5 Sub-Slab Air Sampling
1.0 Installation
Select the locations for installation of brass pre-constructed Vapor Pin®. Divide the building into
thirds, place one sub-slab vapor pin near the center of each third, if possible. The depth of the
vapor pin is determined by the depth of the concrete slab; however, each Vapor Pin® is to be
installed just below the concrete slab such that the potential vapors immediately below the
concrete slab are being sampled. A 1.5-inch diameter hole will be drilled to a depth of
approximately 1.75-inches deep. This is to allow the Vapor Pin® to be recessed below the
concrete surface. Set the supplied drill bit flange in the 1.75-inch diameter hole as a guide to
drill a 5/8-inch diameter Vapor Pin® hole through the concrete slab. Extend the drill bit a couple
of inches below the concrete slab to verify the Vapor Pin® hole is completely through the
concrete slab. Fit the supplied silicon sleeve over the Vapor Pin® and insert it inside the 5/8-
inch diameter hole using the supplied tap and cover that protects the barbed fitting on top of the
Vapor Pin®. Set the supplied stainless steel cap flush to the floor to cover the Vapor Pin®.
2.0 Sampling
Each brass Vapor Pin® will be purged of vapor after installation and then allowed to set
undisturbed for 48 hours before collecting a grab sample from each Vapor Pin®. Rather than
purging three volumes of air from the Vapor Pin® and tubing before collecting a sample, each
Vapor Pin® will be purged using a PID and O2 meter at a rate <= 0.2 liters per minute and
collect the air sample after the PID and O2 levels have stabilized.

A grab sample will be collected from each Vapor Pin® by attaching one end of Tygon™ and
Nylaflow LM ¼-inch diameter tubing to the Vapor Pin® and the other end to a 1 liter Summa
TO-CAN. The grab sample is collected by opening the sampling valve of the pre-evacuated
canister and allowing the canister to fill to ambient pressure (typically a minute or less).

One grab sample will be collected from each Vapor Pin® weekly for four consecutive weeks
following EPA SOPs (EPA ERT #2042, 2001). The atmospheric pressure, wind speed,
precipitation and temperature at the site the days samples are collected will be recorded. The
soil gas samples will be shipped overnight delivery to and analyzed by Pace Laboratory for
VOCs using EPA Method TO-15.

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SOP 6 Decontamination
1.0 Hand Tools and Equipment
Hand tools and equipment will be decontaminated between each sample location by using a
three-bucket wash and rinse system. The sampling equipment will be washed in the first bucket
using low-phosphate detergent and tap water, followed by a triple rinse in bucket two containing
tap water and lastly a triple rinse in bucket three containing deionized/distilled water. The
sampling equipment will then be allowed to air dry before proceeding to the next sampling grid.

One equipment rinseate sample per day may be collected by pouring distilled water over the
decontaminated field equipment and collecting the rinseate water into the sample containers.
The equipment rinseate sample will be submitted to the laboratory for analyses of COCs in the
work plan.
2.0 Push Probe/Drilling Equipment
All down hole drilling equipment and associated tools will be pressure-washed between
boreholes. Pipe racks or similar will be used to elevate the drilling equipment (e.g., rods and
augers) during pressure washing. Decontamination of the DT35 outer and inner rods may be
accomplished using a mobile decontamination pad (MDP) constructed in an open double axel
trailer, or on bermed plastic placed over an asphalt pavement surface. The outer and inner rods
would be pressured washed within the MDP and the fluids would be contained in the MDP or
plastic bermed area and allowed to evaporate.

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SOP 7 FIELD SCREENING PHOTO IONIZATION
DETECTOR (PID)
1.0 Objective
This procedure describes the field-screening method of analyzing organic vapors emitted from
within the pore spaces of a soil sample. Following appropriate techniques, the real-time data
can be used to estimate relative levels of organic contamination in the soil. In addition to
providing assessment information, headspace analysis can be used for health and safety
purposes.
2.0 EQUIPMENT AND SUPPLIES
The following equipment and supplies are necessary to conduct field headspace testing:

• Photoionization detector (PID)
• Calibration gas standards for PID of known concentrations (SOP 8)
• DT35 Dual tube sampling system.
• Ziplock plastic baggies.
3.0 PROCEDURE
The following procedure will be used for field headspace testing of soil samples:

1. The PID is calibrated daily to a standard of 100 parts per million (PPM) isobutylene
(SOP 8).
2. When the outer rods are driven into the subsurface, the cutting shoes shears a 2.125-
inch OD soil core inside a clear plastic liner that is attached to the smaller inner rods.
Once filled, the liner with the soil sample is removed from the bottom of the outer casing
by lifting the inner rods.
3. Cut the plastic sleeve length wise to expose the sample and remove the soil to be tested
with the PID. Granular soils should be broken apart and cohesive soils should be
broken by crushing the sample as it is placed in the ziplock plastic bag. Place
approximately 100-500 grams of soil in the ziplock plastic bag. Place the ziplock plastic
bag in the sun to warm or on the dashboard of the truck to warm the sample for
approximately 5-10 minutes.
4. Turn the PID on before opening the ziplock plastic bag. Open one end of the ziplock
bag just enough to insert the PID probe and then pinch the plastic bag around the PID
probe tip. Take a PID reading, results will be PPM.

5. Record the PID reading on the boring log at the depth of the sample tested. Repeat this
process for any sampled depth of interest.

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SOP 8 EQUIPMENT CALIBRATION
1.0 Objective
Parameters which would be likely to change with time prior to delivery to the laboratory are
generally measured in the field. Because of the potential for temporal differences in measured
values, laboratory measurements of these parameters, although potentially more precise, would
be less accurate than measurements collected in the field. In addition, field measurements can
serve as an initial screening tool to evaluate relative degree of physical properties of samples.

Field measurements are typically performed for the following parameters: (1) total volatile
organic vapors in soil, (2) fluid pH, (3) fluid specific conductance (Cond), (4) fluid temperature
(T),fluid oxidation/reduction potential (ORP), and dissolved oxygen (DO). The equipment to be
used for the above parameters include, a Photoionization detector (PID) total organic vapors in
soil and groundwater, a YSI 6500 Water Quality Meter for pH, T, Cond, ORP and DO. JLI uses
a Geopump® peristaltic pump connected to a flow through cell to collected groundwater
samples when the depth to groundwater is less than 20 feet.

The calibration and maintenance history, as appropriate, of all equipment used to make
measurements will be recorded in the field note book. In general, equipment must be checked
for calibration on a daily basis and according to manufacturer's equipment operation procedure.

2.0 CALIBRATION
2.1 Photoionization Detector (PID)
The PID must be calibrated in order to display concentration in units’ equivalent to PPM. First a
supply of clean air, which contains no off gases or vapors, is used to set the zero point. Then,
isobutylene at 100 PPM (span gas), is used to set the reference standard. The cylinder of span
gas and flow regulator needed for calibration is included with the PID instrument.

2.2 YSI 6500 Water Quality Meter
The YSI meter is calibrated daily for pH, T, Cond and DO. The YSI meter is factory calibrated
for T and ORP and this calibration is updated every 6 months. The YSI meter is calibrated for
ph, Cond and DO by turning on the instrument and selecting the calibration function. The
screen displays the calibration steps the user follows using the following standards:
• pH – calibrated to 4, 7 and 10
• Cond – calibrated to known solution of 10,000 microsiemens per centimeter (ugS/cm)
• DO – calibrated by entering the local barometric pressure in mm/hg.

Johnston Leigh Inc. Standard Operating Procedure
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14

SOP 9 SAMPLING MANAGEMENT CHAIN OF
CUSTODY
1.0 Objective
This section describes sample handling and shipping documentation requirements to ensure the
integrity of the samples collected and submitted to the laboratory for analysis, and to provide the
laboratory with explicit instructions for the analytical services required. The following general
procedures are summarized in this section:
• Sample labeling,
• Sample packaging and shipping, and
• Chain-of-custody.
2.0 Sample Labeling
All sample containers will be labeled using waterproof ink with the following information on
labels:
• Client or project name,
• Sample identification number,
• Date and time of collection,
• Requested analysis, and
• Container type and type of preservation used.

All groundwater samples collected each day are to be listed on the Daily Field Log (Form A).
Duplicate samples will be labeled with a “D” after the well ID. A fictitious sample ID number is
not needed since the internal QAQC laboratory report serves as additional checks on the
laboratory QAQC policy.
3.0 Sample Packaging and Shipping
The following procedures apply to all groundwater samples packed for transport to the
laboratory:
• Place each sample into an individual laboratory supplied bubble wrap bag.
• Each sample from the well will be comprised of 4-40milliliters (mL) vials for BTEX and
GRO, and 4-40 mL vial for DRO. These are all placed into a 1-liter sealable baggie and
labeled on the outside of the baggie with the sample name, date, and sample time. This
is performed to verify the sample during preparation of the chain of custody, and to
assist the laboratory personnel at the log in procedure at the laboratory.
• Place bubble wraps on the inside bottom of the cooler.
• Line the cooler with a laboratory supplied 6-millimeter thick clear plastic bag (plastic bag)
that extends above the cooler at least 18-inches so the bag can be sealed with a zip-tie
strap.
• Place the samples inside the plastic bag and pack the plastic bag with the contents of
one bag of crushed ice. Spread the ice evenly over the entire contents of the plastic bag.
Zip tie the plastic bag shut.
• Place the completed chain of custody inside a 1-liter sealable baggie and tape the
baggie to the inside lid of the cooler.
• Remove any expired shipping label for the cooler. Place the laboratory supplied
overnight priority shipping label on the cooler. Remove the receipt of the shipping label
and attach it to the copy of the chain of custody that is inside the cooler.
• Attach two signed custody seals over the cooler lid where it seals to the body of the
Johnston Leigh Inc. Standard Operating Procedure
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15

cooler. Tape the cooler shut by wrapping shipping tape around the cooler lid and base
and over the custody seals at least two layers thick.
• Ship the coolers using Federal Express or United Parcel Service only from a distribution
location that is staffed by company personnel. No shipping cooler is ever to be left
unattended at a drop location.
4.0 Chain-of-Custody
Chain-of-custody is a mechanism employed to ensure that data resulting from laboratory
analysis are credible and defensible. Chain-of-custody begins at the time and point of sample
collection. Documentation of sample possession and chain-of-custody is provided by the use of
sample labels and chain-of-custody forms.

The chain-of-custody record will be initiated in the field and will accompany each sample during
shipment to the laboratory. The chain-of-custody record allows transfer of custody of a sample
or group of samples in the field to any laboratory. Information listed on the chain-of-custody
includes:
• Sample Identification;
• Project name, location, and number;
• Sampling dates and times;
• Name of sampling technician(s);
• Media being tested for each sample;
• Number of containers per sample;
• Signature of person relinquishing and receiving custody;
• Requested analyses for each sample; and
• Special requirements/comments for project or analysis.

The sampler relinquishing the samples will keep one copy of the chain-of-custody forms and
send the remaining copies with the samples. The chain-of-custody form shall be sealed in a
waterproof plastic bag and placed inside the shipping container.

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16

SOP 10 INVESTIGATION DERIVED WASTE
1.0 Classification
Investigation derived waste (IDW) will include soil, groundwater, and personal protection
equipment (PPE). The following IDW rules will apply for the SAP.
2.0 Soil
Soil is generated from core samples recovered from the push probe plastic sleeves. The
unused soil is considered deminimus and will be broken into fine media and remain onsite. If
required by MT DEQ, a Waste Profile Sheet will be completed with the required analytical
documentation for offsite transportation and disposal. This will be further discussed in the work
plan if required by the site-specific conditions.
3.0 Groundwater
Groundwater purged from the wells using low flow procedure is considered deminimus and will l
first be containerized in a bucket to document the volume of water removed. The groundwater
will then be discharged to an asphalt surface away from storm drains and allowed to evaporate.

4.0 PPE
PPE does not warrant any special disposal. PPE will be disposed of in trash receptacles.

ATTACHMENT C

ATTACHMENT D
FIELD NOTES
GROUNDWATER SAMPLING
08/27-28/2024
CommonCents, 907 North 400 East, Harrisville, Utah
Facility 1200401, Release MSBCommon Cents Harrisville
DTW Date Well Water DTP DTW Well DO ORP COND pH TEMP Sample
08/27/24 Elevation Elevation (feet)(feet)I.D.(mg/L)(mv)(ms/cm)C Time
Sample Date
99.11 92.57 6.54 MW1
98.65 89.48 9.17 MW2
08/28/24 98.30 89.65 8.65 MW3 5.57 1.70 6.85 78.9 1100 GW-MW3
98.56 91.82 6.74 MW4
08/28/24 97.81 91.73 6.08 MW5 1.08 2.50 7.34 19.5 1030 GW-MW5
98.82 92.11 6.71 MW6
99.80 93.74 6.06 MW7
98.51 MW8
08/28/24 98.73 90.49 8.24 MW9 0.44 2.95 7.33 17.9 1200 GW-MW9
98.22 91.01 7.21 MW10
08/28/24 93.03 86.79 6.24 MW11 0.81 3.03 7.20 20.0 1130 GW-MW11
99.03 89.95 9.08 MW14
08/28/24 99.05 87.28 11.77 MW15 2.09 5.01 7.85 16.6 1000 GW-MW15
08/28/24 97.36 88.59 8.77 MW16 0.45 1.48 7.45 21.1 930 GW-MW16
08/28/24 97.67 89.10 8.57 MW17 0.38 2.23 7.27 21.4 900 GW-MW17
MW-2 accessible on 8/27/2024 but a car was parked on the well all day on 8/28/2024 and owner could not be located
Sample
Name
Common Cents Harrisville, UT Page 1 of 1 08/27-28/2024

ATTACHMENT E
ANALYTICAL REPORT
August 31, 2024
Johnston, Leigh, Inc.
Sample Delivery Group:L1768962
Samples Received:08/17/2024
Project Number:
Description:Site Investigation
Site:HARRISVILLE, UT
Report To:Leigh Beem
1820 S Palomar Ln
Kanab, UT 84741
Entire Report Reviewed By:
August 31, 2024
[Preliminary Report]
John Hawkins
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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September 03, 2024
John Hawkins
Project Manager
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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TABLE OF CONTENTS
Cp: Cover Page 1
Tc: Table of Contents 2
Ss: Sample Summary 3
Cn: Case Narrative 4
Sr: Sample Results 5
SB-MW15 6-7 L1768962-01 5
SB-MW16 7-8 L1768962-02 6
SB-MW17 9-10 L1768962-03 7
Qc: Quality Control Summary 8
Total Solids by Method 2540 G-2011 8
Volatile Organic Compounds (GC) by Method 8015D/GRO 10
Volatile Organic Compounds (GC/MS) by Method 8260B 11
Semi-Volatile Organic Compounds (GC) by Method 8015 12
Gl: Glossary of Terms 14
Al: Accreditations & Locations 15
Sc: Sample Chain of Custody 16
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
SB-MW15 6-7 L1768962-01 Solid Leigh Beem 08/15/24 14:45 08/17/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Total Solids by Method 2540 G-2011 WG2348064 1 08/22/24 10:14 08/22/24 10:23 CMB Mt. Juliet, TN
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2350876 33.5 08/15/24 14:45 08/27/24 02:56 NCD Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2348794 1.34 08/15/24 14:45 08/24/24 11:22 DWR Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015 WG2352560 1 08/29/24 14:14 08/30/24 02:21 KKS Mt. Juliet, TN
Collected by Collected date/time Received date/time
SB-MW16 7-8 L1768962-02 Solid Leigh Beem 08/16/24 09:00 08/17/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Total Solids by Method 2540 G-2011 WG2348065 1 08/22/24 09:47 08/22/24 09:54 CMB Mt. Juliet, TN
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2350876 61.8 08/16/24 09:00 08/27/24 03:15 NCD Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2348794 2.47 08/16/24 09:00 08/24/24 11:41 DWR Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015 WG2352562 5 08/29/24 15:03 08/30/24 16:31 KKS Mt. Juliet, TN
Collected by Collected date/time Received date/time
SB-MW17 9-10 L1768962-03 Solid Leigh Beem 08/16/24 10:00 08/17/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Total Solids by Method 2540 G-2011 WG2348065 1 08/22/24 09:47 08/22/24 09:54 CMB Mt. Juliet, TN
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2350876 36.5 08/16/24 10:00 08/27/24 03:35 NCD Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2348794 1.46 08/16/24 10:00 08/24/24 12:01 DWR Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 8015 WG2352562 1 08/29/24 15:03 08/30/24 01:54 KKS 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]
John Hawkins
Project Manager
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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John Hawkins
Project Manager
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SAMPLE RESULTS - 01
L1768962
SB-MW15 6-7
Collected date/time: 08/15/24 14:45
Total Solids by Method 2540 G-2011
Result Qualifier Dilution Analysis Batch
Analyte %date / time
Total Solids 79.8 1 08/22/2024 10:23 WG2348064
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result (dry)Qualifier RDL (dry)Dilution Analysis Batch
Analyte mg/kg mg/kg date / time
TPH (GC/FID) Low Fraction ND 4.83 33.5 08/27/2024 02:56 WG2350876
(S) a,a,a-Trifluorotoluene(FID)87.5 77.0-120 08/27/2024 02:56 WG2350876
Volatile Organic Compounds (GC/MS) by Method 8260B
Result (dry)Qualifier RDL (dry)Dilution Analysis Batch
Analyte mg/kg mg/kg date / time
Benzene ND 0.00193 1.34 08/24/2024 11:22 WG2348794
Toluene ND 0.00966 1.34 08/24/2024 11:22 WG2348794
Ethylbenzene ND 0.00483 1.34 08/24/2024 11:22 WG2348794
Total Xylenes ND 0.0126 1.34 08/24/2024 11:22 WG2348794
Methyl tert-butyl ether 0.0718 0.00193 1.34 08/24/2024 11:22 WG2348794
Naphthalene ND J3 0.0242 1.34 08/24/2024 11:22 WG2348794
(S) Toluene-d8 105 75.0-131 08/24/2024 11:22 WG2348794
(S) 4-Bromofluorobenzene 93.0 67.0-138 08/24/2024 11:22 WG2348794
(S) 1,2-Dichloroethane-d4 95.4 70.0-130 08/24/2024 11:22 WG2348794
Semi-Volatile Organic Compounds (GC) by Method 8015
Result (dry)Qualifier RDL (dry)Dilution Analysis Batch
Analyte mg/kg mg/kg date / time
TPH (GC/FID) High Fraction ND 5.01 1 08/30/2024 02:21 WG2352560
(S) o-Terphenyl 46.6 18.0-148 08/30/2024 02:21 WG2352560
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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SAMPLE RESULTS - 02
L1768962
SB-MW16 7-8
Collected date/time: 08/16/24 09:00
Total Solids by Method 2540 G-2011
Result Qualifier Dilution Analysis Batch
Analyte %date / time
Total Solids 71.4 1 08/22/2024 09:54 WG2348065
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result (dry)Qualifier RDL (dry)Dilution Analysis Batch
Analyte mg/kg mg/kg date / time
TPH (GC/FID) Low Fraction ND 9.65 61.8 08/27/2024 03:15 WG2350876
(S) a,a,a-Trifluorotoluene(FID)95.1 77.0-120 08/27/2024 03:15 WG2350876
Volatile Organic Compounds (GC/MS) by Method 8260B
Result (dry)Qualifier RDL (dry)Dilution Analysis Batch
Analyte mg/kg mg/kg date / time
Benzene ND 0.00386 2.47 08/24/2024 11:41 WG2348794
Toluene ND 0.0194 2.47 08/24/2024 11:41 WG2348794
Ethylbenzene ND 0.00965 2.47 08/24/2024 11:41 WG2348794
Total Xylenes ND 0.0251 2.47 08/24/2024 11:41 WG2348794
Methyl tert-butyl ether 0.00617 0.00386 2.47 08/24/2024 11:41 WG2348794
Naphthalene 0.0844 J3 0.0483 2.47 08/24/2024 11:41 WG2348794
(S) Toluene-d8 106 75.0-131 08/24/2024 11:41 WG2348794
(S) 4-Bromofluorobenzene 93.7 67.0-138 08/24/2024 11:41 WG2348794
(S) 1,2-Dichloroethane-d4 97.0 70.0-130 08/24/2024 11:41 WG2348794
Semi-Volatile Organic Compounds (GC) by Method 8015
Result (dry)Qualifier RDL (dry)Dilution Analysis Batch
Analyte mg/kg mg/kg date / time
TPH (GC/FID) High Fraction 50.3 28.0 5 08/30/2024 16:31 WG2352562
(S) o-Terphenyl 47.0 18.0-148 08/30/2024 16:31 WG2352562
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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SAMPLE RESULTS - 03
L1768962
SB-MW17 9-10
Collected date/time: 08/16/24 10:00
Total Solids by Method 2540 G-2011
Result Qualifier Dilution Analysis Batch
Analyte %date / time
Total Solids 77.9 1 08/22/2024 09:54 WG2348065
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result (dry)Qualifier RDL (dry)Dilution Analysis Batch
Analyte mg/kg mg/kg date / time
TPH (GC/FID) Low Fraction ND 5.39 36.5 08/27/2024 03:35 WG2350876
(S) a,a,a-Trifluorotoluene(FID)86.4 77.0-120 08/27/2024 03:35 WG2350876
Volatile Organic Compounds (GC/MS) by Method 8260B
Result (dry)Qualifier RDL (dry)Dilution Analysis Batch
Analyte mg/kg mg/kg date / time
Benzene ND 0.00216 1.46 08/24/2024 12:01 WG2348794
Toluene ND 0.0108 1.46 08/24/2024 12:01 WG2348794
Ethylbenzene ND 0.00539 1.46 08/24/2024 12:01 WG2348794
Total Xylenes ND 0.0140 1.46 08/24/2024 12:01 WG2348794
Methyl tert-butyl ether 0.0205 0.00216 1.46 08/24/2024 12:01 WG2348794
Naphthalene ND J3 0.0270 1.46 08/24/2024 12:01 WG2348794
(S) Toluene-d8 103 75.0-131 08/24/2024 12:01 WG2348794
(S) 4-Bromofluorobenzene 95.0 67.0-138 08/24/2024 12:01 WG2348794
(S) 1,2-Dichloroethane-d4 96.1 70.0-130 08/24/2024 12:01 WG2348794
Semi-Volatile Organic Compounds (GC) by Method 8015
Result (dry)Qualifier RDL (dry)Dilution Analysis Batch
Analyte mg/kg mg/kg date / time
TPH (GC/FID) High Fraction ND 5.13 1 08/30/2024 01:54 WG2352562
(S) o-Terphenyl 58.6 18.0-148 08/30/2024 01:54 WG2352562
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG2348064
Total Solids by Method 2540 G-2011 L1768962-01
Method Blank (MB)
(MB) R4110627-1 08/22/24 10:23
MB Result MB Qualifier MB MDL MB RDL
Analyte %%%
Total Solids 0.00200
L1768962-01 Original Sample (OS) • Duplicate (DUP)
(OS) L1768962-01 08/22/24 10:23 • (DUP) R4110627-3 08/22/24 10:23
Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD
Limits
Analyte %%%%
Total Solids 79.8 80.6 1 0.939 10
Laboratory Control Sample (LCS)
(LCS) R4110627-2 08/22/24 10:23
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte %%%%
Total Solids 50.0 50.0 99.9 90.0-110
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG2348065
Total Solids by Method 2540 G-2011 L1768962-02,03
Method Blank (MB)
(MB) R4110408-1 08/22/24 09:54
MB Result MB Qualifier MB MDL MB RDL
Analyte %%%
Total Solids 0.00100
L1768962-02 Original Sample (OS) • Duplicate (DUP)
(OS) L1768962-02 08/22/24 09:54 • (DUP) R4110408-3 08/22/24 09:54
Original Result DUP Result Dilution DUP RPD DUP Qualifier DUP RPD
Limits
Analyte %%%%
Total Solids 71.4 66.2 1 7.62 10
Laboratory Control Sample (LCS)
(LCS) R4110408-2 08/22/24 09:54
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte %%%%
Total Solids 50.0 50.0 100 90.0-110
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG2350876
Volatile Organic Compounds (GC) by Method 8015D/GRO L1768962-01,02,03
Method Blank (MB)
(MB) R4113094-2 08/27/24 01:42
MB Result MB Qualifier MB MDL MB RDL
Analyte mg/kg mg/kg mg/kg
TPH (GC/FID) Low Fraction 1.09 J 0.543 2.50
(S)
a,a,a-Trifluorotoluene(FID)89.8 77.0-120
Laboratory Control Sample (LCS)
(LCS) R4113094-1 08/27/24 00:35
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte mg/kg mg/kg %%
TPH (GC/FID) Low Fraction 5.00 5.76 115 72.0-127
(S)
a,a,a-Trifluorotoluene(FID) 97.6 77.0-120
L1769545-04 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD)
(OS) L1769545-04 08/27/24 07:29 • (MS) R4113094-3 08/27/24 08:08 • (MSD) R4113094-4 08/27/24 08:27
Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits
Analyte mg/kg mg/kg mg/kg mg/kg %%%%%
TPH (GC/FID) Low Fraction 186 ND 213 214 114 114 37.3 10.0-151 0.468 28
(S)
a,a,a-Trifluorotoluene(FID) 102 98.0 77.0-120
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG2348794
Volatile Organic Compounds (GC/MS) by Method 8260B L1768962-01,02,03
Method Blank (MB)
(MB) R4111532-3 08/24/24 04:41
MB Result MB Qualifier MB MDL MB RDL
Analyte mg/kg mg/kg mg/kg
Benzene U 0.000467 0.00100
Toluene U 0.00130 0.00500
Ethylbenzene U 0.000737 0.00250
Total Xylenes U 0.000880 0.00650
Methyl tert-butyl ether U 0.000350 0.00100
Naphthalene U 0.00488 0.0125
(S) Toluene-d8 104 75.0-131
(S) 4-Bromofluorobenzene 91.4 67.0-138
(S) 1,2-Dichloroethane-d4 95.9 70.0-130
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R4111532-1 08/24/24 03:05 • (LCSD) R4111532-2 08/24/24 03:24
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte mg/kg mg/kg mg/kg %%%%%
Benzene 0.125 0.118 0.124 94.4 99.2 70.0-123 4.96 20
Toluene 0.125 0.130 0.133 104 106 75.0-121 2.28 20
Ethylbenzene 0.125 0.136 0.135 109 108 74.0-126 0.738 20
Total Xylenes 0.375 0.407 0.399 109 106 72.0-127 1.99 20
Methyl tert-butyl ether 0.125 0.124 0.129 99.2 103 66.0-132 3.95 20
Naphthalene 0.125 0.121 0.148 96.8 118 59.0-130 J3 20.1 20
(S) Toluene-d8 105 100 75.0-131
(S) 4-Bromofluorobenzene 91.3 91.1 67.0-138
(S) 1,2-Dichloroethane-d4 103 102 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 SUMMARYWG2352560
Semi-Volatile Organic Compounds (GC) by Method 8015 L1768962-01
Method Blank (MB)
(MB) R4114082-1 08/30/24 00:20
MB Result MB Qualifier MB MDL MB RDL
Analyte mg/kg mg/kg mg/kg
TPH (GC/FID) High Fraction U 0.769 4.00
(S) o-Terphenyl 56.3 18.0-148
Laboratory Control Sample (LCS)
(LCS) R4114082-2 08/30/24 00:33
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte mg/kg mg/kg %%
TPH (GC/FID) High Fraction 50.0 28.6 57.2 50.0-150
(S) o-Terphenyl 55.0 18.0-148
L1768920-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD)
(OS) L1768920-01 08/30/24 18:22 • (MS) R4114082-3 08/30/24 18:35 • (MSD) R4114082-4 08/30/24 18:49
Spike Amount
(dry)
Original Result
(dry)MS Result (dry)MSD Result
(dry)MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits
Analyte mg/kg mg/kg mg/kg mg/kg %%%%%
TPH (GC/FID) High Fraction 60.7 532 562 598 49.4 107 10 50.0-150 V 6.24 20
(S) o-Terphenyl 76.2 94.5 18.0-148
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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QUALITY CONTROL SUMMARYWG2352562
Semi-Volatile Organic Compounds (GC) by Method 8015 L1768962-02,03
Method Blank (MB)
(MB) R4113997-1 08/30/24 00:20
MB Result MB Qualifier MB MDL MB RDL
Analyte mg/kg mg/kg mg/kg
TPH (GC/FID) High Fraction U 0.769 4.00
(S) o-Terphenyl 63.5 18.0-148
Laboratory Control Sample (LCS)
(LCS) R4113997-2 08/30/24 00:33
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte mg/kg mg/kg %%
TPH (GC/FID) High Fraction 50.0 34.7 69.4 50.0-150
(S) o-Terphenyl 68.9 18.0-148
L1768924-05 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD)
(OS) L1768924-05 08/30/24 00:47 • (MS) R4113997-3 08/30/24 01:00 • (MSD) R4113997-4 08/30/24 01:14
Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits
Analyte mg/kg mg/kg mg/kg mg/kg %%%%%
TPH (GC/FID) High Fraction 50.0 ND 30.3 27.1 60.6 54.2 1 50.0-150 11.1 20
(S) o-Terphenyl 55.9 51.4 18.0-148
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
(dry)Results are reported based on the dry weight of the sample. [this will only be present on a dry report basis for soils].
MDL Method Detection Limit.
ND Not detected at the Reporting Limit (or MDL where applicable).
RDL Reported Detection Limit.
RDL (dry)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
J The identification of the analyte is acceptable; the reported value is an estimate.
J3 The associated batch QC was outside the established quality control range for precision.
V The sample concentration is too high to evaluate accurate spike recoveries.
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122
Alabama 40660 Nebraska NE-OS-15-05
Alaska 17-026 Nevada TN000032021-1
Arizona AZ0612 New Hampshire 2975
Arkansas 88-0469 New Jersey–NELAP TN002
California 2932 New Mexico ¹TN00003
Colorado TN00003 New York 11742
Connecticut PH-0197 North Carolina Env375
Florida E87487 North Carolina ¹DW21704
Georgia NELAP North Carolina ³41
Georgia ¹923 North Dakota R-140
Idaho TN00003 Ohio–VAP CL0069
Illinois 200008 Oklahoma 9915
Indiana C-TN-01 Oregon TN200002
Iowa 364 Pennsylvania 68-02979
Kansas E-10277 Rhode Island LAO00356
Kentucky ¹ ⁶KY90010 South Carolina 84004002
Kentucky ²16 South Dakota n/a
Louisiana AI30792 Tennessee ¹ ⁴2006
Louisiana LA018 Texas T104704245-20-18
Maine TN00003 Texas ⁵LAB0152
Maryland 324 Utah TN000032021-11
Massachusetts M-TN003 Vermont VT2006
Michigan 9958 Virginia 110033
Minnesota 047-999-395 Washington C847
Mississippi TN00003 West Virginia 233
Missouri 340 Wisconsin 998093910
Montana CERT0086 Wyoming A2LA
A2LA – ISO 17025 1461.01 AIHA-LAP,LLC EMLAP 100789
A2LA – ISO 17025 ⁵1461.02 DOD 1461.01
Canada 1461.01 USDA P330-15-00234
EPA–Crypto TN00003
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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ANALYTICAL REPORT
September 12, 2024
Johnston, Leigh, Inc.
Sample Delivery Group:L1772744
Samples Received:08/29/2024
Project Number:
Description:Site Investigation
Site:HARRISVILLE, UT
Report To:Leigh Beem
1820 S Palomar Ln
Kanab, UT 84741
Entire Report Reviewed By:
September 12, 2024
[Preliminary Report]
John Hawkins
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
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September 12, 2024
John Hawkins
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 5
Sr: Sample Results 6
HNW L1772744-01 6
HNE L1772744-02 7
HSW L1772744-03 8
HSE L1772744-04 9
MW17 L1772744-05 10
MW16 L1772744-06 11
MW15 L1772744-07 12
MW9 L1772744-08 13
MW11 L1772744-09 14
MW13 L1772744-10 15
MW14 L1772744-11 16
Qc: Quality Control Summary 17
Volatile Organic Compounds (GC) by Method 8015D/GRO 17
Volatile Organic Compounds (GC/MS) by Method 8260B 19
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 21
Gl: Glossary of Terms 25
Al: Accreditations & Locations 26
Sc: Sample Chain of Custody 27
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
HNW L1772744-01 GW Leigh Beem 08/27/24 15:15 08/29/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2357830 1 09/07/24 02:10 09/07/24 02:10 CDD Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2355536 1 09/03/24 20:49 09/03/24 20:49 JCP Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2357908 1 09/09/24 09:00 09/10/24 22:57 DMG Mt. Juliet, TN
Collected by Collected date/time Received date/time
HNE L1772744-02 GW Leigh Beem 08/27/24 15:45 08/29/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2357830 1 09/07/24 02:32 09/07/24 02:32 CDD Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2355536 1 09/03/24 21:09 09/03/24 21:09 JCP Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2357908 1 09/09/24 09:00 09/10/24 23:17 DMG Mt. Juliet, TN
Collected by Collected date/time Received date/time
HSW L1772744-03 GW Leigh Beem 08/27/24 13:00 08/29/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2357830 1 09/07/24 02:54 09/07/24 02:54 CDD Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2355536 1 09/03/24 21:30 09/03/24 21:30 JCP Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2357908 1 09/09/24 09:00 09/10/24 23:37 DMG Mt. Juliet, TN
Collected by Collected date/time Received date/time
HSE L1772744-04 GW Leigh Beem 08/27/24 14:00 08/29/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2357830 1 09/07/24 03:16 09/07/24 03:16 CDD Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2355536 1 09/03/24 21:50 09/03/24 21:50 JCP Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2357908 1 09/09/24 09:00 09/10/24 23:58 DMG Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW17 L1772744-05 GW Leigh Beem 08/28/24 09:00 08/29/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2357830 1 09/07/24 03:38 09/07/24 03:38 CDD Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2355536 1 09/03/24 22:11 09/03/24 22:11 JCP Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2358514 1 09/09/24 09:19 09/09/24 21:08 DMG Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW16 L1772744-06 GW Leigh Beem 08/28/24 09:30 08/29/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2357830 1 09/07/24 04:00 09/07/24 04:00 CDD Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2355536 1 09/03/24 22:31 09/03/24 22:31 JCP Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2358514 1 09/09/24 09:19 09/10/24 19:10 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
MW15 L1772744-07 GW Leigh Beem 08/28/24 10:00 08/29/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2357830 1 09/07/24 04:22 09/07/24 04:22 CDD Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2355536 1 09/03/24 22:52 09/03/24 22:52 JCP Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2358514 1 09/09/24 09:19 09/09/24 21:48 DMG Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW9 L1772744-08 GW Leigh Beem 08/28/24 12:00 08/29/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2357830 1 09/07/24 04:44 09/07/24 04:44 CDD Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2358717 1 09/09/24 14:12 09/09/24 14:12 DWR Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2358514 1 09/09/24 09:19 09/10/24 18:50 DMG Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW11 L1772744-09 GW Leigh Beem 08/28/24 11:30 08/29/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2357990 1 09/07/24 16:14 09/07/24 16:14 ACG Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2358717 1 09/09/24 14:30 09/09/24 14:30 DWR Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2358544 1 09/11/24 06:45 09/12/24 00:20 DMG Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW13 L1772744-10 GW Leigh Beem 08/28/24 10:30 08/29/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2357990 10 09/07/24 20:36 09/07/24 20:36 ACG Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2358717 10 09/09/24 16:43 09/09/24 16:43 DWR Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2358544 1 09/11/24 06:45 09/12/24 00:40 DMG Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW14 L1772744-11 GW Leigh Beem 08/28/24 11:00 08/29/24 08:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC) by Method 8015D/GRO WG2357990 10 09/07/24 20:59 09/07/24 20:59 ACG Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 8260B WG2358717 20 09/09/24 17:02 09/09/24 17:02 DWR Mt. Juliet, TN
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 WG2358545 1 09/09/24 10:36 09/10/24 09:36 TJD 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]
John Hawkins
Project Manager
Sample Delivery Group (SDG) Narrative
pH outside of method requirement.
Lab Sample ID Project Sample ID Method
L1772744-07 MW15 3511/8015
L1772744-08 MW9 3511/8015
L1772744-09 MW11 8015D/GRO, 3511/8015
L1772744-10 MW13 8015D/GRO, 3511/8015
L1772744-11 MW14 3511/8015
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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John Hawkins
Project Manager
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SAMPLE RESULTS - 01
L1772744
HNW
Collected date/time: 08/27/24 15:15
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
TPH (GC/FID) Low Fraction ND 0.100 1 09/07/2024 02:10 WG2357830
(S) a,a,a-Trifluorotoluene(FID)99.4 78.0-120 09/07/2024 02:10 WG2357830
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
Benzene ND 0.00100 1 09/03/2024 20:49 WG2355536
Toluene ND 0.00100 1 09/03/2024 20:49 WG2355536
Ethylbenzene ND 0.00100 1 09/03/2024 20:49 WG2355536
Total Xylenes ND 0.00300 1 09/03/2024 20:49 WG2355536
Methyl tert-butyl ether ND 0.00100 1 09/03/2024 20:49 WG2355536
Naphthalene ND 0.00500 1 09/03/2024 20:49 WG2355536
(S) Toluene-d8 106 80.0-120 09/03/2024 20:49 WG2355536
(S) 4-Bromofluorobenzene 96.3 77.0-126 09/03/2024 20:49 WG2355536
(S) 1,2-Dichloroethane-d4 104 70.0-130 09/03/2024 20:49 WG2355536
Semi-Volatile Organic Compounds (GC) by Method 3511/8015
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
TPH (GC/FID) High Fraction ND 0.100 1 09/10/2024 22:57 WG2357908
(S) o-Terphenyl 76.3 52.0-156 09/10/2024 22:57 WG2357908
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
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SAMPLE RESULTS - 02
L1772744
HNE
Collected date/time: 08/27/24 15:45
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
TPH (GC/FID) Low Fraction ND 0.100 1 09/07/2024 02:32 WG2357830
(S) a,a,a-Trifluorotoluene(FID)100 78.0-120 09/07/2024 02:32 WG2357830
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
Benzene ND 0.00100 1 09/03/2024 21:09 WG2355536
Toluene ND 0.00100 1 09/03/2024 21:09 WG2355536
Ethylbenzene ND 0.00100 1 09/03/2024 21:09 WG2355536
Total Xylenes ND 0.00300 1 09/03/2024 21:09 WG2355536
Methyl tert-butyl ether ND 0.00100 1 09/03/2024 21:09 WG2355536
Naphthalene ND 0.00500 1 09/03/2024 21:09 WG2355536
(S) Toluene-d8 105 80.0-120 09/03/2024 21:09 WG2355536
(S) 4-Bromofluorobenzene 94.5 77.0-126 09/03/2024 21:09 WG2355536
(S) 1,2-Dichloroethane-d4 105 70.0-130 09/03/2024 21:09 WG2355536
Semi-Volatile Organic Compounds (GC) by Method 3511/8015
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
TPH (GC/FID) High Fraction ND 0.100 1 09/10/2024 23:17 WG2357908
(S) o-Terphenyl 76.8 52.0-156 09/10/2024 23:17 WG2357908
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Johnston, Leigh, Inc.L1772744 09/12/24 10:39 7 of 28
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Johnston, Leigh, Inc.L1772744 09/12/24 13:08 7 of 28
SAMPLE RESULTS - 03
L1772744
HSW
Collected date/time: 08/27/24 13:00
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
TPH (GC/FID) Low Fraction ND 0.100 1 09/07/2024 02:54 WG2357830
(S) a,a,a-Trifluorotoluene(FID)102 78.0-120 09/07/2024 02:54 WG2357830
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
Benzene ND 0.00100 1 09/03/2024 21:30 WG2355536
Toluene ND 0.00100 1 09/03/2024 21:30 WG2355536
Ethylbenzene ND 0.00100 1 09/03/2024 21:30 WG2355536
Total Xylenes ND 0.00300 1 09/03/2024 21:30 WG2355536
Methyl tert-butyl ether ND 0.00100 1 09/03/2024 21:30 WG2355536
Naphthalene ND 0.00500 1 09/03/2024 21:30 WG2355536
(S) Toluene-d8 106 80.0-120 09/03/2024 21:30 WG2355536
(S) 4-Bromofluorobenzene 95.8 77.0-126 09/03/2024 21:30 WG2355536
(S) 1,2-Dichloroethane-d4 106 70.0-130 09/03/2024 21:30 WG2355536
Semi-Volatile Organic Compounds (GC) by Method 3511/8015
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
TPH (GC/FID) High Fraction ND 0.100 1 09/10/2024 23:37 WG2357908
(S) o-Terphenyl 77.4 52.0-156 09/10/2024 23:37 WG2357908
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Johnston, Leigh, Inc.L1772744 09/12/24 10:39 8 of 28
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Johnston, Leigh, Inc.L1772744 09/12/24 13:08 8 of 28
SAMPLE RESULTS - 04
L1772744
HSE
Collected date/time: 08/27/24 14:00
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
TPH (GC/FID) Low Fraction ND 0.100 1 09/07/2024 03:16 WG2357830
(S) a,a,a-Trifluorotoluene(FID)99.7 78.0-120 09/07/2024 03:16 WG2357830
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
Benzene ND 0.00100 1 09/03/2024 21:50 WG2355536
Toluene ND 0.00100 1 09/03/2024 21:50 WG2355536
Ethylbenzene ND 0.00100 1 09/03/2024 21:50 WG2355536
Total Xylenes ND 0.00300 1 09/03/2024 21:50 WG2355536
Methyl tert-butyl ether ND 0.00100 1 09/03/2024 21:50 WG2355536
Naphthalene ND 0.00500 1 09/03/2024 21:50 WG2355536
(S) Toluene-d8 106 80.0-120 09/03/2024 21:50 WG2355536
(S) 4-Bromofluorobenzene 96.9 77.0-126 09/03/2024 21:50 WG2355536
(S) 1,2-Dichloroethane-d4 105 70.0-130 09/03/2024 21:50 WG2355536
Semi-Volatile Organic Compounds (GC) by Method 3511/8015
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
TPH (GC/FID) High Fraction ND 0.100 1 09/10/2024 23:58 WG2357908
(S) o-Terphenyl 80.0 52.0-156 09/10/2024 23:58 WG2357908
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Johnston, Leigh, Inc.L1772744 09/12/24 10:39 9 of 28
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Johnston, Leigh, Inc.L1772744 09/12/24 13:08 9 of 28
SAMPLE RESULTS - 05
L1772744
MW17
Collected date/time: 08/28/24 09:00
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
TPH (GC/FID) Low Fraction ND 0.100 1 09/07/2024 03:38 WG2357830
(S) a,a,a-Trifluorotoluene(FID)99.8 78.0-120 09/07/2024 03:38 WG2357830
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
Benzene ND 0.00100 1 09/03/2024 22:11 WG2355536
Toluene ND 0.00100 1 09/03/2024 22:11 WG2355536
Ethylbenzene ND 0.00100 1 09/03/2024 22:11 WG2355536
Total Xylenes ND 0.00300 1 09/03/2024 22:11 WG2355536
Methyl tert-butyl ether 0.0322 0.00100 1 09/03/2024 22:11 WG2355536
Naphthalene ND 0.00500 1 09/03/2024 22:11 WG2355536
(S) Toluene-d8 106 80.0-120 09/03/2024 22:11 WG2355536
(S) 4-Bromofluorobenzene 95.9 77.0-126 09/03/2024 22:11 WG2355536
(S) 1,2-Dichloroethane-d4 104 70.0-130 09/03/2024 22:11 WG2355536
Semi-Volatile Organic Compounds (GC) by Method 3511/8015
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
TPH (GC/FID) High Fraction 2.83 0.100 1 09/09/2024 21:08 WG2358514
(S) o-Terphenyl 94.2 52.0-156 09/09/2024 21:08 WG2358514
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Johnston, Leigh, Inc.L1772744 09/12/24 10:39 10 of 28
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Johnston, Leigh, Inc.L1772744 09/12/24 13:08 10 of 28
SAMPLE RESULTS - 06
L1772744
MW16
Collected date/time: 08/28/24 09:30
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
TPH (GC/FID) Low Fraction ND 0.100 1 09/07/2024 04:00 WG2357830
(S) a,a,a-Trifluorotoluene(FID)98.9 78.0-120 09/07/2024 04:00 WG2357830
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
Benzene ND 0.00100 1 09/03/2024 22:31 WG2355536
Toluene ND 0.00100 1 09/03/2024 22:31 WG2355536
Ethylbenzene ND 0.00100 1 09/03/2024 22:31 WG2355536
Total Xylenes ND 0.00300 1 09/03/2024 22:31 WG2355536
Methyl tert-butyl ether 0.0330 0.00100 1 09/03/2024 22:31 WG2355536
Naphthalene ND 0.00500 1 09/03/2024 22:31 WG2355536
(S) Toluene-d8 106 80.0-120 09/03/2024 22:31 WG2355536
(S) 4-Bromofluorobenzene 95.8 77.0-126 09/03/2024 22:31 WG2355536
(S) 1,2-Dichloroethane-d4 101 70.0-130 09/03/2024 22:31 WG2355536
Semi-Volatile Organic Compounds (GC) by Method 3511/8015
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
TPH (GC/FID) High Fraction 0.529 0.100 1 09/10/2024 19:10 WG2358514
(S) o-Terphenyl 74.7 52.0-156 09/10/2024 19:10 WG2358514
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Johnston, Leigh, Inc.L1772744 09/12/24 10:39 11 of 28
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Johnston, Leigh, Inc.L1772744 09/12/24 13:08 11 of 28
SAMPLE RESULTS - 07
L1772744
MW15
Collected date/time: 08/28/24 10:00
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
TPH (GC/FID) Low Fraction 0.180 0.100 1 09/07/2024 04:22 WG2357830
(S) a,a,a-Trifluorotoluene(FID)99.7 78.0-120 09/07/2024 04:22 WG2357830
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
Benzene ND 0.00100 1 09/03/2024 22:52 WG2355536
Toluene ND 0.00100 1 09/03/2024 22:52 WG2355536
Ethylbenzene ND 0.00100 1 09/03/2024 22:52 WG2355536
Total Xylenes ND 0.00300 1 09/03/2024 22:52 WG2355536
Methyl tert-butyl ether 0.139 0.00100 1 09/03/2024 22:52 WG2355536
Naphthalene ND 0.00500 1 09/03/2024 22:52 WG2355536
(S) Toluene-d8 106 80.0-120 09/03/2024 22:52 WG2355536
(S) 4-Bromofluorobenzene 95.6 77.0-126 09/03/2024 22:52 WG2355536
(S) 1,2-Dichloroethane-d4 102 70.0-130 09/03/2024 22:52 WG2355536
Semi-Volatile Organic Compounds (GC) by Method 3511/8015
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
TPH (GC/FID) High Fraction 1.08 0.100 1 09/09/2024 21:48 WG2358514
(S) o-Terphenyl 56.8 52.0-156 09/09/2024 21:48 WG2358514
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Johnston, Leigh, Inc.L1772744 09/12/24 10:39 12 of 28
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Johnston, Leigh, Inc.L1772744 09/12/24 13:08 12 of 28
SAMPLE RESULTS - 08
L1772744
MW9
Collected date/time: 08/28/24 12:00
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
TPH (GC/FID) Low Fraction ND 0.100 1 09/07/2024 04:44 WG2357830
(S) a,a,a-Trifluorotoluene(FID)99.8 78.0-120 09/07/2024 04:44 WG2357830
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
Benzene ND 0.00100 1 09/09/2024 14:12 WG2358717
Toluene ND 0.00100 1 09/09/2024 14:12 WG2358717
Ethylbenzene ND 0.00100 1 09/09/2024 14:12 WG2358717
Total Xylenes ND 0.00300 1 09/09/2024 14:12 WG2358717
Methyl tert-butyl ether 0.0474 0.00100 1 09/09/2024 14:12 WG2358717
Naphthalene ND 0.00500 1 09/09/2024 14:12 WG2358717
(S) Toluene-d8 93.9 80.0-120 09/09/2024 14:12 WG2358717
(S) 4-Bromofluorobenzene 94.3 77.0-126 09/09/2024 14:12 WG2358717
(S) 1,2-Dichloroethane-d4 95.9 70.0-130 09/09/2024 14:12 WG2358717
Semi-Volatile Organic Compounds (GC) by Method 3511/8015
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
TPH (GC/FID) High Fraction 0.125 0.100 1 09/10/2024 18:50 WG2358514
(S) o-Terphenyl 55.8 52.0-156 09/10/2024 18:50 WG2358514
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Johnston, Leigh, Inc.L1772744 09/12/24 10:39 13 of 28
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Johnston, Leigh, Inc.L1772744 09/12/24 13:08 13 of 28
SAMPLE RESULTS - 09
L1772744
MW11
Collected date/time: 08/28/24 11:30
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
TPH (GC/FID) Low Fraction ND 0.100 1 09/07/2024 16:14 WG2357990
(S) a,a,a-Trifluorotoluene(FID)93.3 78.0-120 09/07/2024 16:14 WG2357990
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
Benzene ND 0.00100 1 09/09/2024 14:30 WG2358717
Toluene ND 0.00100 1 09/09/2024 14:30 WG2358717
Ethylbenzene ND 0.00100 1 09/09/2024 14:30 WG2358717
Total Xylenes ND 0.00300 1 09/09/2024 14:30 WG2358717
Methyl tert-butyl ether ND 0.00100 1 09/09/2024 14:30 WG2358717
Naphthalene ND 0.00500 1 09/09/2024 14:30 WG2358717
(S) Toluene-d8 91.5 80.0-120 09/09/2024 14:30 WG2358717
(S) 4-Bromofluorobenzene 94.9 77.0-126 09/09/2024 14:30 WG2358717
(S) 1,2-Dichloroethane-d4 98.4 70.0-130 09/09/2024 14:30 WG2358717
Semi-Volatile Organic Compounds (GC) by Method 3511/8015
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
TPH (GC/FID) High Fraction ND 0.100 1 09/12/2024 00:20 WG2358544
(S) o-Terphenyl 90.5 52.0-156 09/12/2024 00:20 WG2358544
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Johnston, Leigh, Inc.L1772744 09/12/24 10:39 14 of 28
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Johnston, Leigh, Inc.L1772744 09/12/24 13:08 14 of 28
SAMPLE RESULTS - 10
L1772744
MW13
Collected date/time: 08/28/24 10:30
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
TPH (GC/FID) Low Fraction 1.67 B 1.00 10 09/07/2024 20:36 WG2357990
(S) a,a,a-Trifluorotoluene(FID)94.2 78.0-120 09/07/2024 20:36 WG2357990
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
Benzene 0.0403 0.0100 10 09/09/2024 16:43 WG2358717
Toluene ND 0.0100 10 09/09/2024 16:43 WG2358717
Ethylbenzene ND 0.0100 10 09/09/2024 16:43 WG2358717
Total Xylenes ND 0.0300 10 09/09/2024 16:43 WG2358717
Methyl tert-butyl ether 0.590 0.0100 10 09/09/2024 16:43 WG2358717
Naphthalene ND 0.0500 10 09/09/2024 16:43 WG2358717
(S) Toluene-d8 92.5 80.0-120 09/09/2024 16:43 WG2358717
(S) 4-Bromofluorobenzene 99.2 77.0-126 09/09/2024 16:43 WG2358717
(S) 1,2-Dichloroethane-d4 95.8 70.0-130 09/09/2024 16:43 WG2358717
Semi-Volatile Organic Compounds (GC) by Method 3511/8015
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
TPH (GC/FID) High Fraction 1.33 0.100 1 09/12/2024 00:40 WG2358544
(S) o-Terphenyl 109 52.0-156 09/12/2024 00:40 WG2358544
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Johnston, Leigh, Inc.L1772744 09/12/24 10:39 15 of 28
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Johnston, Leigh, Inc.L1772744 09/12/24 13:08 15 of 28
SAMPLE RESULTS - 11
L1772744
MW14
Collected date/time: 08/28/24 11:00
Volatile Organic Compounds (GC) by Method 8015D/GRO
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
TPH (GC/FID) Low Fraction 1.42 B 1.00 10 09/07/2024 20:59 WG2357990
(S) a,a,a-Trifluorotoluene(FID)93.8 78.0-120 09/07/2024 20:59 WG2357990
Volatile Organic Compounds (GC/MS) by Method 8260B
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
Benzene ND 0.0200 20 09/09/2024 17:02 WG2358717
Toluene ND 0.0200 20 09/09/2024 17:02 WG2358717
Ethylbenzene ND 0.0200 20 09/09/2024 17:02 WG2358717
Total Xylenes ND 0.0600 20 09/09/2024 17:02 WG2358717
Methyl tert-butyl ether 0.694 0.0200 20 09/09/2024 17:02 WG2358717
Naphthalene ND 0.100 20 09/09/2024 17:02 WG2358717
(S) Toluene-d8 93.6 80.0-120 09/09/2024 17:02 WG2358717
(S) 4-Bromofluorobenzene 94.8 77.0-126 09/09/2024 17:02 WG2358717
(S) 1,2-Dichloroethane-d4 91.4 70.0-130 09/09/2024 17:02 WG2358717
Semi-Volatile Organic Compounds (GC) by Method 3511/8015
Result Qualifier RDL Dilution Analysis Batch
Analyte mg/l mg/l date / time
TPH (GC/FID) High Fraction 0.848 0.100 1 09/10/2024 09:36 WG2358545
(S) o-Terphenyl 127 52.0-156 09/10/2024 09:36 WG2358545
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Johnston, Leigh, Inc.L1772744 09/12/24 10:39 16 of 28
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Johnston, Leigh, Inc.L1772744 09/12/24 13:08 16 of 28
QUALITY CONTROL SUMMARYWG2357830
Volatile Organic Compounds (GC) by Method 8015D/GRO L1772744-01,02,03,04,05,06,07,08
Method Blank (MB)
(MB) R4117820-2 09/06/24 22:46
MB Result MB Qualifier MB MDL MB RDL
Analyte mg/l mg/l mg/l
TPH (GC/FID) Low Fraction U 0.0314 0.100
(S)
a,a,a-Trifluorotoluene(FID)100 78.0-120
Laboratory Control Sample (LCS)
(LCS) R4117820-1 09/06/24 21:53
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte mg/l mg/l %%
TPH (GC/FID) Low Fraction 5.00 5.28 106 72.0-127
(S)
a,a,a-Trifluorotoluene(FID) 103 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:
Johnston, Leigh, Inc.L1772744 09/12/24 10:39 17 of 28
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Johnston, Leigh, Inc.L1772744 09/12/24 13:08 17 of 28
QUALITY CONTROL SUMMARYWG2357990
Volatile Organic Compounds (GC) by Method 8015D/GRO L1772744-09,10,11
Method Blank (MB)
(MB) R4118407-2 09/07/24 13:56
MB Result MB Qualifier MB MDL MB RDL
Analyte mg/l mg/l mg/l
TPH (GC/FID) Low Fraction 0.0621 J 0.0314 0.100
(S)
a,a,a-Trifluorotoluene(FID)92.9 78.0-120
Laboratory Control Sample (LCS)
(LCS) R4118407-1 09/07/24 10:54
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte mg/l mg/l %%
TPH (GC/FID) Low Fraction 5.00 5.22 104 72.0-127
(S)
a,a,a-Trifluorotoluene(FID) 104 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:
Johnston, Leigh, Inc.L1772744 09/12/24 10:39 18 of 28
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Johnston, Leigh, Inc.L1772744 09/12/24 13:08 18 of 28
QUALITY CONTROL SUMMARYWG2355536
Volatile Organic Compounds (GC/MS) by Method 8260B L1772744-01,02,03,04,05,06,07
Method Blank (MB)
(MB) R4117160-3 09/03/24 19:23
MB Result MB Qualifier MB MDL MB RDL
Analyte mg/l mg/l mg/l
Benzene U 0.0000941 0.00100
Toluene U 0.000278 0.00100
Ethylbenzene U 0.000137 0.00100
Total Xylenes U 0.000174 0.00300
Methyl tert-butyl ether U 0.000101 0.00100
Naphthalene U 0.00100 0.00500
(S) Toluene-d8 104 80.0-120
(S) 4-Bromofluorobenzene 96.8 77.0-126
(S) 1,2-Dichloroethane-d4 103 70.0-130
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R4117160-1 09/03/24 18:22 • (LCSD) R4117160-2 09/03/24 18:42
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte mg/l mg/l mg/l %%%%%
Benzene 0.00500 0.00503 0.00503 101 101 70.0-123 0.000 20
Toluene 0.00500 0.00528 0.00515 106 103 79.0-120 2.49 20
Ethylbenzene 0.00500 0.00538 0.00536 108 107 79.0-123 0.372 20
Total Xylenes 0.0150 0.0163 0.0159 109 106 79.0-123 2.48 20
Methyl tert-butyl ether 0.00500 0.00498 0.00491 99.6 98.2 68.0-125 1.42 20
Naphthalene 0.00500 0.00387 0.00393 77.4 78.6 54.0-135 1.54 20
(S) Toluene-d8 105 105 80.0-120
(S) 4-Bromofluorobenzene 97.7 97.0 77.0-126
(S) 1,2-Dichloroethane-d4 105 105 70.0-130
1 Cp
2 Tc
3 Ss
4 Cn
5 Sr
6 Qc
7 Gl
8 Al
9 Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Johnston, Leigh, Inc.L1772744 09/12/24 10:39 19 of 28
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
Johnston, Leigh, Inc.L1772744 09/12/24 13:08 19 of 28
QUALITY CONTROL SUMMARYWG2358717
Volatile Organic Compounds (GC/MS) by Method 8260B L1772744-08,09,10,11
Method Blank (MB)
(MB) R4118240-2 09/09/24 13:29
MB Result MB Qualifier MB MDL MB RDL
Analyte mg/l mg/l mg/l
Benzene U 0.0000941 0.00100
Toluene U 0.000278 0.00100
Ethylbenzene U 0.000137 0.00100
Total Xylenes U 0.000174 0.00300
Methyl tert-butyl ether U 0.000101 0.00100
Naphthalene U 0.00100 0.00500
(S) Toluene-d8 92.4 80.0-120
(S) 4-Bromofluorobenzene 98.6 77.0-126
(S) 1,2-Dichloroethane-d4 97.6 70.0-130
Laboratory Control Sample (LCS)
(LCS) R4118240-1 09/09/24 12:51
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte mg/l mg/l %%
Benzene 0.00500 0.00560 112 70.0-123
Toluene 0.00500 0.00507 101 79.0-120
Ethylbenzene 0.00500 0.00464 92.8 79.0-123
Total Xylenes 0.0150 0.0141 94.0 79.0-123
Methyl tert-butyl ether 0.00500 0.00539 108 68.0-125
Naphthalene 0.00500 0.00462 92.4 54.0-135
(S) Toluene-d8 90.7 80.0-120
(S) 4-Bromofluorobenzene 98.9 77.0-126
(S) 1,2-Dichloroethane-d4 100 70.0-130
L1773226-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD)
(OS) L1773226-01 09/09/24 17:21 • (MS) R4118240-3 09/09/24 22:46 • (MSD) R4118240-4 09/09/24 23:05
Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits
Analyte mg/l mg/l mg/l mg/l %%%%%
Benzene 1.00 1.98 3.07 3.13 109 115 200 17.0-158 1.94 27
Toluene 1.00 8.67 9.40 9.31 73.0 64.0 200 26.0-154 0.962 28
Ethylbenzene 1.00 1.97 2.96 2.91 99.0 94.0 200 30.0-155 1.70 27
Total Xylenes 3.00 11.8 14.6 14.4 93.3 86.7 200 29.0-154 1.38 28
Methyl tert-butyl ether 1.00 ND 1.15 1.18 107 110 200 28.0-150 2.58 29
Naphthalene 1.00 ND 1.96 1.96 105 105 200 12.0-156 0.000 35
(S) Toluene-d8 92.3 91.6 80.0-120
(S) 4-Bromofluorobenzene 97.5 96.6 77.0-126
(S) 1,2-Dichloroethane-d4 95.1 96.1 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 SUMMARYWG2357908
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 L1772744-01,02,03,04
Method Blank (MB)
(MB) R4117693-1 09/10/24 06:16
MB Result MB Qualifier MB MDL MB RDL
Analyte mg/l mg/l mg/l
TPH (GC/FID) High Fraction U 0.0247 0.100
(S) o-Terphenyl 83.0 52.0-156
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R4117693-2 09/10/24 06:36 • (LCSD) R4117693-3 09/10/24 06:56
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte mg/l mg/l mg/l %%%%%
TPH (GC/FID) High Fraction 1.50 1.12 1.13 74.7 75.3 50.0-150 0.889 20
(S) o-Terphenyl 77.0 76.0 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 SUMMARYWG2358514
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 L1772744-05,06,07,08
Method Blank (MB)
(MB) R4117638-1 09/09/24 20:07
MB Result MB Qualifier MB MDL MB RDL
Analyte mg/l mg/l mg/l
TPH (GC/FID) High Fraction U 0.0247 0.100
(S) o-Terphenyl 76.0 52.0-156
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R4117638-2 09/09/24 20:27 • (LCSD) R4117638-3 09/09/24 20:48
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte mg/l mg/l mg/l %%%%%
TPH (GC/FID) High Fraction 1.50 1.11 1.08 74.0 72.0 50.0-150 2.74 20
(S) o-Terphenyl 85.0 84.0 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 SUMMARYWG2358544
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 L1772744-09,10
Method Blank (MB)
(MB) R4118814-1 09/11/24 23:19
MB Result MB Qualifier MB MDL MB RDL
Analyte mg/l mg/l mg/l
TPH (GC/FID) High Fraction U 0.0247 0.100
(S) o-Terphenyl 81.5 52.0-156
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R4118814-2 09/11/24 23:39 • (LCSD) R4118814-3 09/12/24 00:00
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte mg/l mg/l mg/l %%%%%
TPH (GC/FID) High Fraction 1.50 1.61 1.64 107 109 50.0-150 1.85 20
(S) o-Terphenyl 111 112 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 SUMMARYWG2358545
Semi-Volatile Organic Compounds (GC) by Method 3511/8015 L1772744-11
Method Blank (MB)
(MB) R4118054-1 09/10/24 08:55
MB Result MB Qualifier MB MDL MB RDL
Analyte mg/l mg/l mg/l
TPH (GC/FID) High Fraction U 0.0247 0.100
(S) o-Terphenyl 126 52.0-156
Laboratory Control Sample (LCS)
(LCS) R4118054-2 09/10/24 09:16
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte mg/l mg/l %%
TPH (GC/FID) High Fraction 1.50 1.56 104 50.0-150
(S) o-Terphenyl 142 52.0-156
L1774813-06 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD)
(OS) L1774813-06 09/10/24 14:01 • (MS) R4118054-3 09/10/24 14:21 • (MSD) R4118054-4 09/10/24 14:42
Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits
Analyte mg/l mg/l mg/l mg/l %%%%%
TPH (GC/FID) High Fraction 1.43 0.353 1.93 1.88 110 107 1 50.0-150 2.62 20
(S) o-Terphenyl 107 109 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.
ND Not detected at the Reporting Limit (or MDL where applicable).
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
B The same analyte is found in the associated blank.
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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Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122
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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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