DERR-2024-011476

Underwood Environmental Consulting, Inc.
9475 N. Silver Creek Road  Park City, Utah 84098  Phone [phone]  Fax [phone]

Groundwater Monitoring Report
June 2024

September 12, 2024

Vernal Bulk Plant
350 North Vernal Avenue
Vernal, Utah
Facility ID #9000154, Release Site ITU

Submitted To: Mr. Mark Caldwell
1521 South 1500 East, L.L.C.
3081 West 500 South
Vernal, Utah 84078

Copy To: Ms. Eileen Brennan
Department of Environmental Quality
Division of Environmental Response and Remediation
P.0. Box 144840
Salt Lake City, Utah 84114-4840

Groundwater Monitoring Report – June 2024
Vernal Bulk Plant
Facility ID 9000154, Release Site ITU

Underwood Environmental Consulting, Inc.
i

EXECUTIVE SUMMARY

Underwood Environmental Consulting, Inc. (UEC) has been retained by 1521 South 1500 East, L.L.C.
to perform groundwater monitoring at a former Western Petroleum Bulk Plant, located at 350 North
Vernal Avenue in Vernal, Utah (site). The site is a former underground storage tank (UST) facility
and former above ground storage tank (AST) facility, referred to as the Vernal Bulk Plant.

Groundwater monitoring was performed on June 4, 2024. Water level measurements and groundwater
samples were obtained from six of the seven existing monitoring wells. Monitoring Well MW-6 was
damaged and not sampled, but historical data indicates non detectable concentrations from the last five
consecutive sampling events, ending in 2012. (Table 1). The groundwater flow direction was
determined to be east-northeast and is consistent with previous monitoring events. Groundwater
samples from all six monitoring wells sampled were below Tier 1 Screening Criteria. Groundwater
samples obtained from four monitoring wells exceeded the Initial Screening Level (ISL) for total
petroleum hydrocarbons - diesel range organics (TPH-DRO). No other petroleum hydrocarbons
(MTBE, BTEXN, TPH-GRO or TRPH) were detected in groundwater above the limits of detection.
No measurable free product, aside from a sheen, was observed.

Based on the apparent plume stability and absence of dissolved volatile compounds (BTEXN), UEC
recommends that release ITU be considered for regulatory closure based on meeting Tier 1 screening
criteria.

Respectfully,
Underwood Environmental Consulting, Inc.

L. Earl Underwood, P.G.
Senior Geologist
UST Certified Consultant - CC0018

cc: Kevin Murray, Holland and Hart

Groundwater Monitoring Report –June 2024
Vernal Bulk Plant
Facility ID 9000154, Release Site ITU

Underwood Environmental Consulting, Inc.
1

INTRODUCTION

Underwood Environmental Consulting, Inc. (UEC) has been retained by Mr. Mark Caldwell, registered
agent for 1521 South 1500 East, L.L.C., to perform groundwater monitoring at a former Western Petroleum
Bulk Plant, located at 350 North Vernal Avenue in Vernal, Utah (site). The site is a former underground
storage tank (UST) facility and former above ground storage tank (AST) facility, referred to as the Vernal
Bulk Plant.

BACKGROUND

According to the UST Closure Notice on file at the Division of Environmental Response and Remediation
(DERR), six USTs were closed by removal in November 1994. A release was reported to the DERR based
on closure sample results and field observations (UEC, 2008a).

In November 2007, petroleum impacts were documented in a creek or gulch located north of the site. In
February 2008, the DERR issued a notice of violation and order which required submittal of a Subsurface
Investigation Report (SIR) defining the full extent and degree of petroleum contamination resulting from a
release from the former UST system. Additionally, the investigation was to determine if the petroleum
release from the former UST system had impacted the creek north of the site (UEC, 2008b).

In July 2008, a limited excavation and removal of soil “hot spots” was performed. Confirmation sampling
of soils from 2 of the 5 excavations indicated petroleum impacts above Tier 1 screening levels for TPH-
GRO remaining in soil to the north and northeast of the former USTs. The MTBE, BTEXN, TPH-DRO,
and TRPH concentrations in soil were either below Tier 1 levels or below the limits of detection in the five
soil samples collected (Figure 1) (UEC, 2008b).

In November 2008, an alleged drain pipe near the creek north of the site was investigated. Tri-County
Health Department Deputy Director, Mr. Darrin Brown, was present during the investigation. No evidence
of a drain pipe was observed in the excavated area. It was concluded that off site impacts to the creek north
of the bulk plant did not appear to be related to the former UST release either hydraulically via the
groundwater or directly via a drain pipe (UEC, 2009).

GROUNDWATER MONITORING

A groundwater sampling event was conducted at the Vernal Bulk Plant on June 4, 2024. Depth to
groundwater measurements were obtained from each well using an electronic water level meter.
Monitoring well MW-6 was found to be damaged and neither a water level measurement or a groundwater
sample could be obtained. State-certified soil and groundwater samplers collected groundwater samples
from six of seven wells using standard groundwater sampling procedures. Disposable bailers were used to
purge the wells and obtain the samples. The groundwater samples were retained in laboratory-supplied 40
ml glass vials and 1 liter jars, labeled appropriately, and placed on ice. The samples were kept on ice until
relinquished to the laboratory. The groundwater samples were analyzed by Chemtech Ford Laboratory
Groundwater Monitoring Report –June 2024
Vernal Bulk Plant
Facility ID 9000154, Release Site ITU

Underwood Environmental Consulting, Inc.
2

using EPA method 8260D for methyl tertiary-butyl ether (MTBE), benzene, toluene, ethylbenzene,
xylenes, and naphthalene (BTEXN), method 8260B/C for total petroleum hydrocarbons - gasoline range
organics (TPH-GRO), method 8015C for TPH- diesel range organics (TPH-DRO), and method 1664B for
total recoverable petroleum hydrocarbons (TRPH).

Depth to Groundwater and Flow Direction

The results of the water level measurements and the calculated water table elevations are summarized on
Table 1. Depth to groundwater was measured ranging from 4.49 to 9.08 feet below top-of-casing in the
monitoring wells accessed. No measurable free product, aside from a sheen observed while purging MW-
2, was observed.

A groundwater contour map is depicted on Figure 2. The groundwater flow direction measured in June
2024 was to the east-northeast and appears consistent with the groundwater flow direction reported
previously.

Groundwater Chemistry

The results of groundwater analyses are summarized on Table 1. The laboratory analytical reports are
provided as an attachment.

In June 2024, groundwater samples obtained from six monitoring wells were below Tier 1 screening levels.
Four wells exceeded the ISL for TPH-DRO. The highest TPH-DRO concentration detected was 2.5 mg/L
at MW-2. No other petroleum hydrocarbons (MTBE, BTEXN, TPH-GRO or TRPH) were detected in
groundwater above the limits of detection. No petroleum hydrocarbons were detected in groundwater at
monitoring wells MW-1 and MW-3.

CONCLUSIONS

Based on field observations and the analytical results of groundwater samples collected and analyzed during
the June 2024 monitoring event, the following conclusions are presented:

• Depth to groundwater ranged from approximately 4.5 to 9 feet below top-of-casing.

• The groundwater flow direction was to the east-northeast and appears consistent with the flow
direction reported previously.

• Groundwater samples from all six wells sampled were below Tier 1 screening criteria.

• Groundwater samples collected from four monitoring wells exceeded the Initial Screening Level
(ISL) for TPH-DRO.

• No MTBE, BTEXN, TPH-GRO, or TRPH concentrations were detected in groundwater above the
limits of detection at the six monitoring well locations sampled.
Groundwater Monitoring Report –June 2024
Vernal Bulk Plant
Facility ID 9000154, Release Site ITU

Underwood Environmental Consulting, Inc.
3

Based on the apparent plume stability and absence of dissolved volatile compounds (BTEXN), UEC
recommends that release ITU be considered for regulatory closure based on meeting Tier 1 screening
criteria.

Our services consist of professional opinions from a State-certified UST consultant, made in general
accordance with locally accepted environmental practices at the time of execution. Environmental samples
are obtained from specific locations, utilizing methodologies consistent with Utah Department of
Environmental Quality regulations. UEC makes no guarantee; either expressed or implied, that the
analytical results accurately represent subsurface conditions throughout the entire site.

References Cited:

DERR, 2006 Utah LUST Program Screening Levels for Soil and Groundwater: Utah Division of
Environmental Response and Remediation, Salt Lake City, Utah, May 15, 2006.

UEC, 2008a Subsurface Investigation Sampling Report, Vernal Bulk Plant, 350 North Vernal
Avenue, Vernal, Utah, Facility ID #9000154, Release Site EITU: Underwood
Environmental Consulting, Park City, Utah, March 28, 2008.

UEC, 2008b Confirmation Sampling Report, Vernal Bulk Plant, 350 North Vernal Avenue,
Vernal, Utah, Facility ID #9000154, Release Site EITU: Underwood Environmental
Consulting, Park City, Utah, August 11, 2008.

UEC, 2009 Groundwater Monitoring and Off-Site Investigation Report – November 2008,
Vernal Bulk Plant, 350 North Vernal Avenue, Vernal, Utah, Facility ID #9000154,
Release Site EITU: Underwood Environmental Consulting, Park City, Utah, January
12, 2009.
MW-1
EW-1
MW-5
MW-3
MW-4
MW-2
MW-6
Warehouse
Garage
Fence / property line
Fence / property line
Fe
n
c
e

/

p
r
o
p
e
r
t
y

l
i
n
e
Former ASTs
Oils and Lubricants
Existing ASTs
Gas and Diesel
400 South Street
Fence Fence
Fe
n
c
e
Fe
n
c
e
+
+
Ga
t
e
Gate Gate++ +++
Residence
Residence
Residence
Residence
Utah DNR
Pr
o
p
e
r
t
y

L
i
n
e
Ga
s
-
C
a
r
d
Fu
e
l
i
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g

F
a
c
i
l
i
t
y
Vacant
Property
S
S
S
T
T
T
OH
P
OH
P
OH
P
P
P
P
WWW
FormerASTs
Loading Rack
So
i
l

S
t
o
c
k
p
i
l
e
(f
r
o
m

T
e
s
t

P
i
t
s
)
Former Vernal Bulk Plant
350 North VernalAve.
Vernal, Utah
FACILITY ID# 9000154
RELEASE SITE: EITU
LEGEND
Utility locations approximate
approximate scale in feet
00 25 50 100
North
Original Drawing 11" X 17"
(adjust scale accordingly)
2-inch Monitoring Well - Feb 2008MW-1
Sample Locations
Pre-existing 2-inch Monitoring WellEW-1
Sewer
Buried Power
Buried Phone Line
Overhead Power
Water
Utilities
W
S
P
T
OHP
8/9/24
CS-01
CS-02
CS-03
CS-04
CS-05
B1
Gas
Diesel
Kero Kero Solvent
Used oil
Former UST
Former USTs
CS-01 Test Pit Sample - July 2008
Soil Boring - Feb 2008B1
SITE MAP
FIGURE 1
MW-1
EW-1
MW-5
MW-3
MW-4
MW-2
MW-6
Warehouse
Garage
Fence / property line
Fence / property line
Fe
n
c
e

/

p
r
o
p
e
r
t
y

l
i
n
e
Former ASTs
Oils and Lubricants
Existing ASTs
Gas and Diesel
400 South Street
Fence Fence
Fe
n
c
e
Fe
n
c
e
+
+
Ga
t
e
Gate Gate++ +++
Residence
Residence
Residence
Residence
Utah DNR
Pr
o
p
e
r
t
y

L
i
n
e
Ga
s
-
C
a
r
d
Fu
e
l
i
n
g

F
a
c
i
l
i
t
y
Vacant
Property
S
S
S
T
T
T
OH
P
OH
P
OH
P
P
P
P
WWW
FormerASTs
Loading Rack
So
i
l

S
t
o
c
k
p
i
l
e
(f
r
o
m

T
e
s
t

P
i
t
s
)
Former Vernal Bulk Plant
350 North VernalAve.
Vernal, Utah
FACILITY ID# 9000154
RELEASE SITE: EITU
LEGEND
Utility locations approximate
approximate scale in feet
00 25 50 100
North
Original Drawing 11" X 17"
(adjust scale accordingly)
2-inch Monitoring Well - Feb 2008MW-1
Sample Locations
Pre-existing 2-inch Monitoring WellEW-1
Sewer
Buried Power
Buried Phone Line
Overhead Power
Water
Utilities
W
S
P
T
OHP
8/9/24
GROUNDWATER
CONTOUR MAP
June 4, 2024
FIGURE 2
9
0
Groundwater Elevation Contour
Line with Flow Direction
(Contour Interval = 2.0 ft)
w/ Groundwater Elevation (ft)96.21
96.21
90.98
89.95
92.86
87.58
94.72
NM
L
ICENS E D P R O FESSIO
N
A
L
G
E
OLOGIST
L
ICENS E D P R O FESSIO
N
A
L
G
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OLOGIST
JAM
E
S

A
.
McR
E
E
L
JAM
E
S

A
.
McR
E
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5420
8
5
4
-
2
2
5
0
Groundwater Monitoring Report - June 2024
Well /SAMPLE DTW
GW
Elev.FPT MTBE Benzene Toluene
Ethyl-
benzene Xylenes
Naphth-
alene
TPH
(GRO)
TPH
(DRO)
TRPH
O&G
Elevation DATE (feet)(feet)(ft)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)
MW-1 2/21/08 5.00 95.70 <0.001 <0.001 <0.001 <0.001 <0.003 <0.001 0.323 <2.0 <10
100.70 6/12/08 4.11 96.59 <0.001 <0.001 <0.001 0.002 0.003 0.002 2.56 <2.0 10.5
11/24/08 5.01 95.69 <0.001 <0.001 <0.001 <0.001 <0.003 <0.001 0.054 <1.0 <10
8/20/09 5.14 95.56 <0.001 <0.001 <0.001 <0.001 <0.003 <0.001 0.092 <1 <5
5/4/11 4.05 96.65 <0.001 <0.001 <0.001 <0.001 <0.003 0.002 <0.05 <1 <5
9/5/12 5.68 95.02 <0.001 <0.001 <0.001 <0.001 <0.003 <0.002 <0.05 <1 <5
5/29/13 3.87 96.83
11/1/13 4.22 96.48
4/30/15 4.32 96.38
6/4/24 4.49 96.21 <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0 <5
MW-2 2/21/08 6.94 91.04 <0.001 0.036 <0.001 0.054 0.128 0.09 1.11 3.3 <10
97.98 6/12/08 6.94 91.04 0.02 <0.001 0.058 <0.001 0.050 0.097 0.081 1.97 <2.0 8.3
11/24/08 6.52 91.46 <0.001 0.032 <0.001 0.038 0.023 0.038 0.923 6.6 <10
8/20/09 6.64 91.34 0.02 <0.001 0.024 <0.001 0.026 0.011 0.029 0.224 6.3 32.9
5/4/11 5.49 92.49 sheen <0.005 0.059 <0.005 0.124 <0.015 0.182 11 19.2 16.2
9/5/12 6.87 91.11 sheen <0.005 <0.005 <0.005 <0.005 <0.015 <0.01 0.425 1.1 <5
5/29/13 6.11 91.87 sheen <0.005 0.012 <0.005 0.038 <0.015 0.027 0.395 77.4 <10
11/1/13 6.27 91.71 sheen <0.005 <0.005 <0.005 0.036 <0.015 0.023 2.63 21.4 17.1
4/30/15 6.32 91.66 <0.001 0.003 <0.001 0.035 0.003 0.011 0.379 6.2 <5
6/4/24 7.00 90.98 sheen <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 2.5 <5
MW-3 2/21/08 5.68 90.16 <0.001 <0.001 <0.001 <0.001 <0.003 <0.001 0.103 <2.0 <10
95.84 6/12/08 5.28 90.56 <0.001 <0.001 <0.001 <0.001 <0.003 <0.001 <0.05 <2.0 <5.0
11/24/08 5.91 89.93 <0.001 <0.001 <0.001 <0.001 <0.003 0.002 <0.05 <1.0 <10
8/20/09 5.99 89.85 <0.001 <0.001 <0.001 <0.001 <0.003 <0.001 <0.05 <1 <5
5/4/11 5.44 90.40 <0.001 <0.001 <0.001 <0.001 <0.003 <0.002 <0.05 2.9 <5
9/5/12 6.19 89.65 <0.001 <0.001 <0.001 <0.001 <0.003 <0.002 <0.05 <1 <5
5/29/13 5.34 90.50
11/1/13 5.37 90.47
4/30/15 5.58 90.26
6/4/24 5.89 89.95 <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 <1.0 <5
0.2 0.3 3 4 10 0.7 10 10 10
Continued Next Page
Not Sampled
Facility ID 9000154, Release Site EITU
TABLE 1
GROUNDWATER MONITORING DATA
Former Vernal Bulk Plant
350 North Vernal Avenue, Vernal, Utah
Tier 1 Screening Level (1)
Not Sampled
Not Sampled
Not Sampled
Not Sampled
Not Sampled
Underwood Environmental Consulting, Inc.
Groundwater Monitoring Report - June 2024
Well /SAMPLE DTW
GW
Elev.FPT MTBE Benzene Toluene
Ethyl-
benzene Xylenes
Naphth-
alene
TPH
(GRO)
TPH
(DRO)
TRPH
O&G
Elevation DATE (feet)(feet)(ft)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)
Facility ID 9000154, Release Site EITU
TABLE 1
GROUNDWATER MONITORING DATA
Former Vernal Bulk Plant
350 North Vernal Avenue, Vernal, Utah
MW-4 2/21/08 6.58 92.74 <0.001 0.023 <0.001 0.057 0.138 0.039 1.51 3.2 <10
99.32 6/12/08 6.08 93.24 <0.001 0.040 <0.001 0.090 0.241 0.060 3.23 <2.0 16.3
11/24/08 6.36 92.96 <0.001 0.008 <0.001 0.041 0.044 0.019 1.06 19.4 <10
8/20/09 6.41 92.91 <0.001 0.007 <0.001 0.044 0.091 0.047 0.525 3.9 9.8
5/4/11 5.49 93.83 sheen <0.005 0.026 <0.005 0.069 <0.015 0.101 4.69 22.3 10.1
9/5/12 6.81 92.51 sheen <0.005 <0.005 <0.005 0.010 <0.015 0.010 0.159 7.3 8.5
5/29/13 5.79 93.53 <0.025 <0.025 <0.025 0.044 <0.075 0.087 3.62 86.9 <10
11/1/13 5.88 93.44 sheen <0.02 <0.02 <0.02 0.159 <0.06 0.221 1.67 40.4 15.4
4/30/15 6.01 93.31 sheen <0.005 <0.005 <0.005 0.026 <0.015 <0.01 0.396 3.5 <5
6/4/24 6.46 92.86 <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 1.8 <5
MW-5 2/21/08 8.44 88.22 <0.003 <0.003 <0.003 0.006 <0.009 <0.003 0.434 <2.0 <10
96.66 6/12/08 8.21 88.45 <0.001 0.047 0.002 0.011 0.008 0.001 0.586 <2.0 7.3
11/24/08 8.35 88.31 <0.001 <0.001 <0.001 <0.001 <0.003 0.003 0.481 3.1 <10
8/20/09 9.13 87.53 <0.001 <0.001 <0.001 <0.001 0.005 <0.001 0.115 1.0 <5
5/4/11 7.79 88.87 <0.001 <0.001 <0.001 <0.001 <0.003 0.004 0.114 1.8 6.2
9/5/12 9.40 87.26 <0.001 <0.001 <0.001 <0.001 <0.003 <0.002 <0.05 <1 <5
5/29/13 8.19 88.47 <0.001 <0.001 <0.001 <0.001 <0.003 0.003 <0.05 <1 <10
11/1/13 8.20 88.46 <0.001 <0.001 <0.001 <0.001 <0.003 <0.002 <0.05 <1 <10
4/30/15 8.17 88.49 <0.001 0.011 <0.001 0.027 0.006 <0.002 0.149 <1 <5
6/4/24 9.08 87.58 <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 1.7 <5
MW-6 2/21/08 6.50 92.89 <0.001 <0.001 <0.001 <0.001 <0.003 <0.001 0.113 <2.0 <10
99.39 6/12/08 5.94 93.45 <0.001 <0.001 <0.001 <0.001 <0.003 0.003 <0.05 <2.0 <5.0
11/24/08 6.34 93.05 <0.001 <0.001 <0.001 <0.001 <0.003 <0.001 <0.05 <1.0 <10
8/20/09 6.55 92.84 <0.001 <0.001 <0.001 <0.001 <0.003 <0.001 <0.05 <1 <5
5/4/11 5.73 93.66 <0.001 <0.001 <0.001 <0.001 <0.003 <0.002 <0.05 <1 <5
9/5/12 6.88 92.51 <0.001 <0.001 <0.001 <0.001 <0.003 <0.002 <0.05 <1 <5
5/29/13 5.98 93.41
11/1/13 5.96 93.43
4/30/15 6.06 93.33
6/4/24 ----
0.2 0.3 3 4 10 0.7 10 10 10
Continued Next Page
Not Sampled - Well Damaged
Not Sampled
Not Sampled
Tier 1 Screening Level (1)
Not Sampled
Underwood Environmental Consulting, Inc.
Groundwater Monitoring Report - June 2024
Well /SAMPLE DTW
GW
Elev.FPT MTBE Benzene Toluene
Ethyl-
benzene Xylenes
Naphth-
alene
TPH
(GRO)
TPH
(DRO)
TRPH
O&G
Elevation DATE (feet)(feet)(ft)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)
Facility ID 9000154, Release Site EITU
TABLE 1
GROUNDWATER MONITORING DATA
Former Vernal Bulk Plant
350 North Vernal Avenue, Vernal, Utah
EW-1 5/18/07 ------<0.020 <0.010 <0.020 <0.020 <0.020 <0.020 <0.20 <0.20 NA
100.00 2/21/08 5.52 94.48 sheen <0.01 0.172 <0.01 0.457 3.09 0.382 11.1 49.2 869
6/12/08 4.89 95.11 <0.005 0.010 <0.005 0.100 0.312 0.083 1.64 <2.0 12.7
11/24/08 5.43 94.57 <0.001 0.017 0.002 0.059 0.028 0.012 1.19 2.7 13
8/20/09 5.51 94.49 <0.001 0.012 <0.001 0.038 <0.003 <0.001 0.142 <1 15.9
5/4/11 ------
9/5/12 6.08 93.92 sheen <0.001 <0.001 <0.001 <0.001 <0.003 <0.002 <0.05 <1 5.7
5/29/13 4.74 95.26 sheen <0.001 0.003 <0.001 0.016 <0.003 <0.002 <0.05 <1 <10
11/1/13 4.83 95.17 sheen <0.001 0.003 <0.001 0.006 <0.003 0.002 0.069 <1 <10
4/30/15 5.04 94.96 <0.001 <0.001 <0.001 <0.001 <0.003 <0.002 <0.05 <1 <5
6/4/24 5.28 94.72 <0.005 <0.005 <0.012 <0.012 <0.012 <0.012 <0.125 1.1 <5
0.2 0.3 3 4 10 0.7 10 10 10
Notes:
TRPH - total recoverable petroleum hydrocarbons (EPA method 1664A, HEM-SGT)MTBE - methyl tertiary-butyl ether
O&G - oil and grease (EPA method 1664A, HEM)DTW - depth to water
TPH-GRO - total petroleum hydrocarbons as gasoline (EPA method 8260B or 8015B)GW Elev. - groundwater elevation
TPH-DRO - total petroleum hydrocarbons as diesel (EPA method 8015B)mg/L - milligrams per liter
Bold print indicates a concentration exceeding Tier 1 screening level FPT - free product thickness
Arbitrary datum of 100.00 feet established on site.
(1) DERR, 2006
Tier 1 Screening Level (1)
Well Access Obstructed
Underwood Environmental Consulting, Inc.
The analyses presented on this report were performed in accordance with the
National Environmental Laboratory Accreditation Program (NELAP) unless
noted in the comments, flags, or case narrative. If the report is to be used for
regulatory compliance, it should be presented in its entirety, and not be
altered.
Client Service Contact: 801.262.7299
Underwood Environmental Consulting
Attn: James McReel
9475 North Silver Creek Road
Park City, UT 84098
Work Order: 24F0367
Project: Western Petroleum - Vernal Avenue
6/12/2024
Approved By:
Mark Broadhead, Project Manager
9632 South 500 West Sandy, Utah 84070
Serving the Intermountain West since 1953
801.262.7299 Main 866.792.0093 Fax www.ChemtechFord.com
Page 1 of 9
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Underwood Environmental Consulting
James McReel
9475 North Silver Creek Road
Park City, UT 84098
PO#:
Receipt:
Date Reported:
Project Name:
ITU
6/5/24 12:39 @ 1.4 °C
6/12/2024
Western Petroleum - Vernal Avenue
Sample ID: MW-1
Lab ID: 24F0367-01Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 6/4/24 14:15
Preparation
Date/Time
Sampled By: James McReel
Minimum
Reporting
Limit MethodResult
Inorganic
mg/L 6/6/246/6/245EPA 1664BNDOil & Grease (HEM)
mg/L 6/6/246/6/245EPA 1664BNDTRPH (SGT-HEM)
MBTEXn
mg/L 6/6/246/6/240.005 EPA 8260D/5030BNDBenzene
mg/L 6/6/246/6/240.012 EPA 8260D/5030BNDEthylbenzene
mg/L 6/6/246/6/240.005 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 6/6/246/6/240.012 EPA 8260D/5030BNDNaphthalene
mg/L 6/6/246/6/240.012 EPA 8260D/5030BNDToluene
mg/L 6/6/246/6/240.012 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 6/7/246/6/240.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 6/10/246/10/241.0 EPA 8015 CNDDiesel Range Organics
Project Name: Western Petroleum - Vernal Avenue CtF WO#: 24F0367
www.ChemtechFord.com
Page 2 of 9Page 2 of 9
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Underwood Environmental Consulting
James McReel
9475 North Silver Creek Road
Park City, UT 84098
PO#:
Receipt:
Date Reported:
Project Name:
ITU
6/5/24 12:39 @ 1.4 °C
6/12/2024
Western Petroleum - Vernal Avenue
Sample ID: MW-2
Lab ID: 24F0367-02Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 6/4/24 15:30
Preparation
Date/Time
Sampled By: James McReel
Minimum
Reporting
Limit MethodResult
Inorganic
mg/L 6/6/246/6/245EPA 1664BNDOil & Grease (HEM)
mg/L 6/6/246/6/245EPA 1664BNDTRPH (SGT-HEM)
MBTEXn
mg/L 6/6/246/6/240.005 EPA 8260D/5030BNDBenzene
mg/L 6/6/246/6/240.012 EPA 8260D/5030BNDEthylbenzene
mg/L 6/6/246/6/240.005 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 6/6/246/6/240.012 EPA 8260D/5030BNDNaphthalene
mg/L 6/6/246/6/240.012 EPA 8260D/5030BNDToluene
mg/L 6/6/246/6/240.012 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 6/7/246/6/240.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 6/10/246/10/241.0 EPA 8015 C2.5Diesel Range Organics
Project Name: Western Petroleum - Vernal Avenue CtF WO#: 24F0367
www.ChemtechFord.com
Page 3 of 9Page 3 of 9
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Underwood Environmental Consulting
James McReel
9475 North Silver Creek Road
Park City, UT 84098
PO#:
Receipt:
Date Reported:
Project Name:
ITU
6/5/24 12:39 @ 1.4 °C
6/12/2024
Western Petroleum - Vernal Avenue
Sample ID: MW-3
Lab ID: 24F0367-03Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 6/4/24 16:10
Preparation
Date/Time
Sampled By: James McReel
Minimum
Reporting
Limit MethodResult
Inorganic
mg/L 6/6/246/6/245EPA 1664BNDOil & Grease (HEM)
mg/L 6/6/246/6/245EPA 1664BNDTRPH (SGT-HEM)
MBTEXn
mg/L 6/6/246/6/240.005 EPA 8260D/5030BNDBenzene
mg/L 6/6/246/6/240.012 EPA 8260D/5030BNDEthylbenzene
mg/L 6/6/246/6/240.005 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 6/6/246/6/240.012 EPA 8260D/5030BNDNaphthalene
mg/L 6/6/246/6/240.012 EPA 8260D/5030BNDToluene
mg/L 6/6/246/6/240.012 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 6/7/246/6/240.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 6/10/246/10/241.0 EPA 8015 CNDDiesel Range Organics
Project Name: Western Petroleum - Vernal Avenue CtF WO#: 24F0367
www.ChemtechFord.com
Page 4 of 9Page 4 of 9
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Underwood Environmental Consulting
James McReel
9475 North Silver Creek Road
Park City, UT 84098
PO#:
Receipt:
Date Reported:
Project Name:
ITU
6/5/24 12:39 @ 1.4 °C
6/12/2024
Western Petroleum - Vernal Avenue
Sample ID: MW-4
Lab ID: 24F0367-04Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 6/4/24 15:10
Preparation
Date/Time
Sampled By: James McReel
Minimum
Reporting
Limit MethodResult
Inorganic
mg/L 6/6/246/6/245EPA 1664BNDOil & Grease (HEM)
mg/L 6/6/246/6/245EPA 1664BNDTRPH (SGT-HEM)
MBTEXn
mg/L 6/6/246/6/240.005 EPA 8260D/5030BNDBenzene
mg/L 6/6/246/6/240.012 EPA 8260D/5030BNDEthylbenzene
mg/L 6/6/246/6/240.005 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 6/6/246/6/240.012 EPA 8260D/5030BNDNaphthalene
mg/L 6/6/246/6/240.012 EPA 8260D/5030BNDToluene
mg/L 6/6/246/6/240.012 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 6/7/246/6/240.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 6/10/246/10/241.0 EPA 8015 C1.8Diesel Range Organics
Project Name: Western Petroleum - Vernal Avenue CtF WO#: 24F0367
www.ChemtechFord.com
Page 5 of 9Page 5 of 9
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Underwood Environmental Consulting
James McReel
9475 North Silver Creek Road
Park City, UT 84098
PO#:
Receipt:
Date Reported:
Project Name:
ITU
6/5/24 12:39 @ 1.4 °C
6/12/2024
Western Petroleum - Vernal Avenue
Sample ID: MW-5
Lab ID: 24F0367-05Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 6/4/24 16:30
Preparation
Date/Time
Sampled By: James McReel
Minimum
Reporting
Limit MethodResult
Inorganic
mg/L 6/6/246/6/245EPA 1664BNDOil & Grease (HEM)
mg/L 6/6/246/6/245EPA 1664BNDTRPH (SGT-HEM)
MBTEXn
mg/L 6/6/246/6/240.005 EPA 8260D/5030BNDBenzene
mg/L 6/6/246/6/240.012 EPA 8260D/5030BNDEthylbenzene
mg/L 6/6/246/6/240.005 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 6/6/246/6/240.012 EPA 8260D/5030BNDNaphthalene
mg/L 6/6/246/6/240.012 EPA 8260D/5030BNDToluene
mg/L 6/6/246/6/240.012 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 6/6/246/6/240.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 6/10/246/10/241.0 EPA 8015 C1.7Diesel Range Organics
Project Name: Western Petroleum - Vernal Avenue CtF WO#: 24F0367
www.ChemtechFord.com
Page 6 of 9Page 6 of 9
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Underwood Environmental Consulting
James McReel
9475 North Silver Creek Road
Park City, UT 84098
PO#:
Receipt:
Date Reported:
Project Name:
ITU
6/5/24 12:39 @ 1.4 °C
6/12/2024
Western Petroleum - Vernal Avenue
Sample ID: EW-1
Lab ID: 24F0367-06Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 6/4/24 14:40
Preparation
Date/Time
Sampled By: James McReel
Minimum
Reporting
Limit MethodResult
Inorganic
mg/L 6/6/246/6/245EPA 1664BNDOil & Grease (HEM)
mg/L 6/6/246/6/245EPA 1664BNDTRPH (SGT-HEM)
MBTEXn
mg/L 6/6/246/6/240.005 EPA 8260D/5030BNDBenzene
mg/L 6/6/246/6/240.012 EPA 8260D/5030BNDEthylbenzene
mg/L 6/6/246/6/240.005 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 6/6/246/6/240.012 EPA 8260D/5030BNDNaphthalene
mg/L 6/6/246/6/240.012 EPA 8260D/5030BNDToluene
mg/L 6/6/246/6/240.012 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 6/6/246/6/240.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 6/10/246/10/241.0 EPA 8015 C1.1Diesel Range Organics
Project Name: Western Petroleum - Vernal Avenue CtF WO#: 24F0367
www.ChemtechFord.com
Page 7 of 9Page 7 of 9
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Underwood Environmental Consulting
James McReel
9475 North Silver Creek Road
Park City, UT 84098
PO#:
Receipt:
Date Reported:
Project Name:
ITU
6/5/24 12:39 @ 1.4 °C
6/12/2024
Western Petroleum - Vernal Avenue
Report Footnotes
Abbreviations
ND = Not detected at the corresponding Minimum Reporting Limit (MRL).
1 mg/L = one milligram per liter or 1 mg/kg = one milligram per kilogram = 1 part per million.
1 ug/L = one microgram per liter or 1 ug/kg = one microgram per kilogram = 1 part per billion.
1 ng/L = one nanogram per liter or 1 ng/kg = one nanogram per kilogram = 1 part per trillion.
On calculated parameters, there may be a slight difference between summing the rounded values shown on the report
vs the unrounded values used in the calculation.
Project Name: Western Petroleum - Vernal Avenue CtF WO#: 24F0367
www.ChemtechFord.com
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