DERR-2024-005340

2410 WEST CALIFORNIA AVENUE • SALT LAKE CITY, UTAH 84104
PHONE [phone] • FAX [phone]
Website: www.wasatch-environmental.com • e-Mail: [e-mail]

Mr. Pierre Langue, AIA, DPLG November 22, 2022
Axis Architects Project No.: 2544-001A
1179 South State Street
Salt Lake City, Utah 84111

SUBJECT: Monitoring Well Installation and Sampling Report
Tejeda’s Market
1179 South Navajo Street
Salt Lake City, Utah
Facility ID 4002596, Release Site OAL

INTRODUCTION

Wasatch Environmental, Inc., (Wasatch) has completed monitoring well installation and sampling
activities at the Tejeda’s Market (Property), located at approximately 1179 South Navajo Street in
Salt Lake City, Utah. The investigation activities consisted of installing, developing, surveying, and
sampling four groundwater monitoring wells on the Property.

BACKGROUND

During environmental due diligence activities for a property transaction, Western Geologic completed a
Phase I Environmental Site Assessment which identified two former gas stations on separate portions of
the Property. A ground penetrating radar investigation identified an underground anomaly thought to
have been a former tank basin. Western Geologic advanced two soil borings, TM-3 and TM-4 in this area
and soil and groundwater samples were analyzed for volatile organic compounds (VOCs) and total
petroleum hydrocarbons as gasoline-range organics (TPH-GRO). The sample results from TM-3 were
non detect for groundwater and below the Utah Initial Screening Levels (ISLs) for soil. The sample
results from TM-4 were below the Utah ISLs for soil, but the groundwater sample exceeded the ISL for
benzene. Benzene was identified at a concentration of 0.0403 milligrams per liter (mg/L) which is greater
than the ISL for benzene of 0.005 mg/L.

On March 19, 2021, Wasatch installed and sampled a temporary groundwater monitoring well (TM-4A)
near TM-4. The well was developed and sampled. The analytical result for benzene was 0.0128 mg/L
which is lower than the Western Geologic grab sample, but still above the Utah ISL of 0.005 mg/L.
On March 31, 2021, Wasatch advanced three soil borings near TM-4A to facilitate the collection of soil
samples and attempt to define the extent of the groundwater impacts. TPH-GRO, benzene,
ethylbenzene, naphthalene, and total xylenes were detected above laboratory reporting limits in one or
more of the soil samples; however, the exhibited soil concentrations were well below their respective Utah
ISLs. Benzene was detected above the Utah ISL for benzene in all three of the groundwater samples .

On May 28, 2021, Wasatch Senior Geologist, Christopher Nolan, oversaw a geophysical survey of the
western portion of the Property in an attempt to identify the presence of any buried features that could be
related to the source of the benzene detected in groundwater.

The geophysical survey identified several anomalies that indicated the presence of fill material associated
with the former UST basin, product piping, and dispenser areas. One anomaly indicative of a UST was
located. Given its size, it was suggested that the UST was likely a waste oil tank. This information was
taken into consideration when sighting additional boring locations.

Wasatch Environmental Inc.
Page 2
On June 10, 2021, Wasatch advanced a total of 11 soil borings. The soil and groundwater sampling
identified an area of elevated benzene in groundwater located at the southwest corner of the Property.

On November 11, 2021, Wasatch directed the removal of a 1,000-gallon steel UST and collected closure
soil samples SS-1 and SS-2 at a depth of 5 feet below ground surface (bgs). The results were greater
than the Utah ISLs for total petroleum hydrocarbons as diesel-range organics (TPH-DRO), TPH-GRO,
and total recoverable petroleum hydrocarbons (TRPH). Benzene was not identified at concentrations
greater than laboratory reporting limits, however, the laboratory reporting limits exceeded the Utah ISLs
for benzene.

Wasatch prepared and implemented a corrective action plan (CAP) to address petroleum hydrocarbon
impacts to soil at the removed UST area and at an area at boring location GP-9, which contained TPH-
GRO at concentrations greater than ISLs at a depth of 9 feet bgs. All action levels in the CAP were met
and all soil confirmation samples were below Utah ISLs. No soil that contains petroleum hydrocarbons at
concentrations greater then ISLs are know n to remain on the Property.

OBJECTIVE

The objective of this investigation was to characterize the extent of petroleum hydrocarbon and benzene
impacts observed previously in direct-push groundwater samples at the southwest portion of the Property,
and calculate groundwater flow direction by installing four groundwater monitoring wells and converting
an existing temporary well to a permanent monitoring well.

METHODOLOGY

Monitoring Well Installations, Surveying, Development, and Sampling

Four groundwater monitoring wells (MW-1 through MW-4) were installed at the Property on October 13,
2022. The drilling was performed by Direct Push Services with oversight by Wasatch personnel. The
monitoring wells were installed using a Geoprobe 7822 DT drill rig equipped with direct-push drilling
equipment.

Each monitoring well was drilled to a depth of 18.5 to 19 feet bgs. Monitoring wells were screened from
approximately 8 feet to 18 feet bgs with 0.010-inch slot, 1-inch diameter, schedule 40 polyvinylchloride
(PVC) well screen, prepacked with 10/20 silica sand. Additional sand was placed at least two feet above
the prepacked screen. A bentonite seal at least two feet thick was installed above the sand pack and
grout placed to surface. A well cap was installed at the top of each well casing at each monitoring well.
Surface completions consisting of 8-inch diameter, traffic rated, flush-mounted well vaults were installed
at each monitoring well. During well installation at MW-3, the well screen was inadvertently raised
approximately 3 feet which was not discovered until the well sampling. This well was screen ed between
6.5 and 16.5 feet bgs. Well construction logs are presented in Appendix A. Monitoring well locations are
depicted on Figure 1.

Existing temporary monitoring well TM-4A was converted to a permanent groundwater monitoring well by
installing a surface completion consisting of an 8-inch diameter, flush-mounted, traffic-rated, well box set
in concrete. This well, which is within the benzene plume, was labelled MW-5 (Figure 1).

Following the monitoring well installation activities, Wasatch surveyed the locations and top of casing
(TOC) elevations for each of the monitoring wells using an optical level. Each TOC elevation was
referenced to a relative datum of 100.00 feet assigned to the top of casing measuring point monitoring at
well MW-1.

Depth to groundwater was measured using a Solonist water level meter. The probe was decontaminated
between each monitoring wells with non-phosphate detergent (Alconox®), rinsed with distilled water, and
followed by a second rinse with distilled water.

Wasatch Environmental Inc.
Page 3
Groundwater samples were collected from each monitoring well on October 18, 2022. Groundwater
samples were collected using a peristaltic pump and ¼-inch outside diameter, disposable, low-density
polyethylene tubing. Prior to sample collection, each well was properly developed. Well development is
a process that involves purging three well casing volumes in order to yield groundwater samples of
acceptably low turbidity as excess turbidity may alter water quality and result in erroneous chemical
analysis. Once three well casing volumes were purged from each well, groundwater samples were
dispensed into 40-milliliter (mL) capacity, glass vials with Teflon® septa caps. The vials used for
collecting the TPH-GRO and aromatic hydrocarbon samples, which were supplied by the analytical
laboratory, contained several drops of hydrochloric acid as a preservative. The vials were filled slowly
until a meniscus formed at the top of each vial, then each vial was sealed with a septa cap. This
procedure eliminates headspace within the vials and minimizes the loss of volatiles. The sample vials
were each labeled with the analysis required, samplers name, sample identification, sample location,
date, and time of sample collection. The samples were placed in a cooler with ice and transported under
chain-of-custody protocol to Chemtech-Ford for analysis. Groundwater samples were analyzed for TPH-
GRO, methyl-tert butyl ether (MTBE), benzene, toluene, ethylbenzene, total xylenes and naphthalene
(MBTEXN) by U.S. EPA Method 8260D and total petroleum hydrocarbons as diesel range organics (TPH-
DRO) by U.S. EPA Method 8015C.

RESULTS

Table 1 presents the groundwater analytical results. For comparison purposes, Table 1 also shows the
applicable Utah Initial Screening Levels (ISLs) and Utah Risk-Based Corrective Action (RBCA) Tier I
Screening Levels for petroleum hydrocarbon constituents. The groundwater analytical report and chain-
of-custody documentation are presented in Appendix B.

As shown on Table 1, benzene was identified in monitoring wells MW-2, MW-3, and MW-4 at
concentration ranging 0.010 milligrams per liter (mg/L) to 0.024 mg/L, which exceed the Utah ISLs for
benzene.

The following analytes were detected in one or more groundwater samples at concentrations below the
applicable Utah ISL: TPH-GRO, ethylbenzene, and total xylenes. No TPH-DRO, toluene, MTBE, or
naphthalene were reported above laboratory minimum reporting limits in any of the monitoring wells.

Groundwater measurements and elevation data are presented in Table 2. As shown on Table 2 depth to
groundwater ranged from 10 to 10.72 feet below TOC. A potentiometric surface map is presented in
Figure 2. The potentiometric surface map indicates that the hydraulic gradient is generally to the south -
southwest at 0.011 feet per foot.

CONCLUSIONS AND RECOMMENDATIONS

Results of groundwater sampling at the southwestern portion of the Property confirms the presence of
benzene in the groundwater at concentrations above the Utah ISLs at the southwestern portion of the
Property. Monitoring well MW-5 which was a temporary well and was converted to a permanent well,
previously contained benzene at a concentration of 0.128 mg/kg. Benzene was reported at a
concentration <0.005 mg/L during this sampling event. Whether or not this decrease in benzene
concentration is due to the source removal during the soil CAP is not clear. Additional groundwater
monitoring events should demonstrate if the benzene impacts are decreasing with time.

Wasatch Environmental Inc.
Page 4

Our services consist of professional opinions and recommendations made in accordance with generally
accepted environmental engineering principles and practices. This warranty is in lieu of all other
warranties either expressed or implied.

Should you have any questions, please do not hesitate to contact us.

Sincerely,

WASATCH ENVIRONMENTAL, INC.

Christopher J. Nolan, P.G.
Senior Project Geologist
Certified UST Consultant (CC 0118)

Tables

Table 1 - Groundwater Analytical Results
Table 2 - Well Construction and Groundwater Elevation Data

Figures

Figure 1 – Monitoring Well Location Map
Figure 2 – Potentiometric Surface Map

Appendices

Appendix A – Well Construction Logs
Appendix B – Laboratory Analytical Report

The use or reuse of this information is restricted to the referenced document unless otherwise authorized.
Wasatch Environmental Copyright 2006
AXIS GLENDALE WEI 2544-001
Figure 1 Monitoring Well Location Map
Tejeda’s Market
Monitoring Well Location
MW-1
MW-2
MW-5
MW-3 MW-4
The use or reuse of this information is restricted to the referenced document unless otherwise authorized.
Wasatch Environmental Copyright 2006
AXIS GLENDALE WEI 2544-001
Figure 2 Groundwater Gradient Map
Tejeda’s Market
MW-4
(89.46)
MW-3
(89.31)
MW-1
(90.0)
MW-2
(89.29)
MW-5
(89.62)General Groundwater
Flow Direction
Hydraulic Gradient
0.012 ft./ft.
Groundwater Elevation
Contour
Monitoring Well
*All groundwater elevations are
based on an arbitrary elevation
datum of 100 feet at MW-1
Legend
TR
H
-
D
R
O
TP
H
-
G
R
O
Be
n
z
e
n
e
To
l
u
e
n
e
Et
h
y
l
b
e
n
z
e
n
e
Me
t
h
y
l

t
e
r
t
-
b
u
t
y
l

e
t
h
e
r
Na
p
t
h
t
h
a
l
e
n
e
Xy
l
e
n
e
s

(
t
o
t
a
l
)

MW-1 10/18/2022 <1.0 <0.125 <0.005 <0.012 <0.012 <0.005 <0.012 <0.012
MW-2 10/18/2022 <1.0 0.746 0.024 <0.012 0.275 <0.005 <0.012 0.289
MW-3 10/18/2022 <1.0 0.127 0.010 <0.012 0.046 <0.005 <0.012 0.071
MW-4 10/18/2022 <1.0 0.258 0.013 <0.012 0.056 <0.005 <0.012 0.063
MW-5 10/18/2022 <1.0 <0.125 <0.005 <0.012 <0.012 <0.005 <0.012 <0.012
1 1 0.005 1.0 0.7 0.2 0.7 10
10 10 0.3 3.0 4 0 1 10
NOTES:
< = concentration was below the reporting limit
NA = not analyzed
BOLD = measured concentration exceeds the applicable Utah Initial Screening Level
Table 1
Groundwater Analytical Results
Utah Initial Screening Levels
Utah Risk Based Corrective Action Tier 1 Screening Levels
Tejeda's Market
1179 South Navajo Street
Salt Lake City, Utah
all concentrations are expressed in milligrams per kilogram (mg/L) except as noted otherwise
Petroleum Hydrocarbons
Sample I.D.Sample
Collection Date
11/8/2022 10.00 90.00
11/22/2022 10.08 89.92
11/8/2022 10.66 89.29
11/22/2022 10.72 89.23
11/8/2022 10.14 89.31
11/22/2022 10.21 89.24
11/8/2022 10.23 89.46
11/22/2022 10.30 89.39
11/8/2022 10.32 89.62
11/22/2022 10.35 89.55
1179 Navajo Street
Screen Interval
(feet from TOC)
MW-4 99.69
100.00
99.95
99.45
MW-1
MW-2
MW-3
MW-5 99.94 8' - 23'
Table 2
Well Construction and Groundwater Elevation Data
Tejeda's Market
Salt Lake City, Utah
Measurement
Date
Top of
Casing
Reference
Elevation
(feet)
Depth to
GW Water
(feet)
GW
Elevation
(feet)
Well ID
8.5' - 18.5'
9' - 19'
8.5' - 18.5'
6' - 16'

Appendix A
Well Construction Logs

Jeffrey Hessburg
Measuring Point
GeoProbe 7822DT
ColorDescription
Axis Glendale LSI
1179 South Navajo Street
Salt Lake City, UT 84104
Octeber 13, 2022
18.3’
10.8’
Asphalt and Road Base (0’-6”)
End of Boring
2544-001A MW-1BORING NUMBER:PROJECT NUMBER:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
DATE DRILLED:
LOGGED BY:
REFERENCE ELEVATION:
DRILL RIG:
TOTAL DEPTH:
DEPTH TO GROUNDWATER FROM MEASURING POINT:
DESCRIPTION AND CLASSIFICATION
Soil
Type Consist.De
p
t
h

(
f
e
e
t
)
Sa
m
p
l
e
Pe
r
c
e
n
t

R
e
c
o
v
e
r
y
PI
D

(
p
p
m
)
Wat
e
r

L
e
v
e
l
Temporary Well
Construction
WELL LOG
Environmental Science and Engineering
7” Flush Mount
Well Vault set in
Bentonite
1” PVC
0.25’ to 8’
1” J-Plug

3”
End Cap
PBE
Well Screen
1” Diameter
8.5’ to 18.5’
10/20
Silica Sand
3’-8’
Hydrated
Bentonite
Chips
0.5’ to 3’
Soils were not logged at time of well install
Ground
Water
at 10.8’
Below
Measuring
Point
Jeffrey Hessburg
Measuring Point
GeoProbe 7822DT
ColorDescription
October 13, 2022
18.5’
10.5’
Asphalt (0’-6”)
End of Boring
MW-2BORING NUMBER:PROJECT NUMBER:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
DATE DRILLED:
LOGGED BY:
REFERENCE ELEVATION:
DRILL RIG:
TOTAL DEPTH:
DEPTH TO GROUNDWATER FROM MEASURING POINT:
DESCRIPTION AND CLASSIFICATION
Soil
Type Consist.De
p
t
h

(
f
e
e
t
)
Sa
m
p
l
e
Pe
r
c
e
n
t

R
e
c
o
v
e
r
y
PI
D

(
p
p
m
)
Wat
e
r

L
e
v
e
l
Temporary Well
Construction
WELL LOG
Environmental Science and Engineering
7” Flush Mount
Well Vault set in
Bentonite
1” PVC
0.25’ to 8.5’
1” J-Plug

3”
End Cap
PBE
Well Screen
1” Diameter
8.5’ to 18.5’
10/20
Silica Sand
5.25’-8.5’
Hydrated
Bentonite
Chips
0.5’ to 5.25’
Soils were not logged at time of well install
Axis Glendale LSI
1179 South Navajo Street
Salt Lake City, UT 84104
2544-001A2544-001A
Ground
Water
at 10.5’
Below
Measuring
Point
Jeffrey Hessburg
Measuring Point
GeoProbe 7822DT
ColorDescription
October 13, 2022
16.5’
10.3’
Asphalt (0’-6”)
End of Boring
MW-3BORING NUMBER:PROJECT NUMBER:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
DATE DRILLED:
LOGGED BY:
REFERENCE ELEVATION:
DRILL RIG:
TOTAL DEPTH:
DEPTH TO GROUNDWATER FROM MEASURING POINT:
DESCRIPTION AND CLASSIFICATION
Soil
Type Consist.De
p
t
h

(
f
e
e
t
)
Sa
m
p
l
e
Pe
r
c
e
n
t

R
e
c
o
v
e
r
y
PI
D

(
p
p
m
)
Wat
e
r

L
e
v
e
l
Temporary Well
Construction
WELL LOG
Environmental Science and Engineering
7” Flush Mount
Well Vault set in
Bentonite
1” PVC
0.25’ to 6.5’
1” J-Plug

3”
End Cap
PBE
Well Screen
1” Diameter
6.5’ to 16.5’
10/20
Silica Sand
4.5’-6.5’
Hydrated
Bentonite
Chips
3’ to 4.5’
Soils were not logged at time of well install
Axis Glendale LSI
1179 South Navajo Street
Salt Lake City, UT 84104
2544-001A2544-001A
Grout
0.5’ to 3’
Ground
Water
at 10.3’
Below
Measuring
Point
Jeffrey Hessburg
Measuring Point
GeoProbe 7822DT
ColorDescription
October 13, 2022
18.5’
10.3’
Asphalt (0’-6”)
End of Boring
MW-4BORING NUMBER:PROJECT NUMBER:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
DATE DRILLED:
LOGGED BY:
REFERENCE ELEVATION:
DRILL RIG:
TOTAL DEPTH:
DEPTH TO GROUNDWATER FROM MEASURING POINT:
DESCRIPTION AND CLASSIFICATION
Soil
Type Consist.De
p
t
h

(
f
e
e
t
)
Sa
m
p
l
e
Pe
r
c
e
n
t

R
e
c
o
v
e
r
y
PI
D

(
p
p
m
)
Wat
e
r

L
e
v
e
l
Temporary Well
Construction
WELL LOG
Environmental Science and Engineering
7” Flush Mount
Well Vault set in
Bentonite
1” PVC
0.25’ to 8.7’
1” J-Plug

3”
End Cap
PBE
Well Screen
1” Diameter
8.5’ to 18.5’
10/20
Silica Sand
6.1’-8.8’
Hydrated
Bentonite
Chips
3.5’ to 6.5’
Soils were not logged at time of well install
Axis Glendale LSI
1179 South Navajo Street
Salt Lake City, UT 84104
2544-001A2544-001A
Grout
0.5’ to 3.5’
Ground
Water
at 10.3’
Below
Measuring
Point

Appendix B
Laboratory Analytical Report
The analyses presented on this report were performed in accordance with the
National Environmental Laboratory Accreditation Program (NELAP) unless
noted in the comments, flags, or case narrative. If the report is to be used for
regulatory compliance, it should be presented in its entirety, and not be
altered.
Client Service Contact: 801.262.7299
Wasatch Environmental
Attn: Chris Nolan
2410 West California Avenue
Salt Lake City, UT 84104
Work Order: 22J1355
Project: Tejedas Market Monitoring Wells
10/27/2022
Approved By:
Reed Hendricks, Director of Operations
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 8
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
Wasatch Environmental
Chris Nolan
2410 West California Avenue
Salt Lake City, UT 84104
PO#:
Receipt:
Date Reported:
Project Name:
2544-001A
10/18/22 13:05 @ 12.1 °C
10/27/2022
Tejedas Market Monitoring Wells
Sample ID: MW-1
Lab ID: 22J1355-01Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 10/18/22 12:20
Preparation
Date/Time
Sampled By: Client
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 10/24/2210/24/220.005 EPA 8260D /5030ANDBenzene
mg/L 10/24/2210/24/220.012 EPA 8260D /5030ANDEthylbenzene
mg/L 10/24/2210/24/220.005 EPA 8260D /5030ANDMethyl tert-Butyl Ether (MTBE)
mg/L 10/24/2210/24/220.012 EPA 8260D /5030ANDNaphthalene
mg/L 10/24/2210/24/220.012 EPA 8260D /5030ANDToluene
mg/L 10/24/2210/24/220.012 EPA 8260D /5030ANDXylenes, total
Gasoline Range
mg/L 10/24/2210/24/220.125 EPA 8260B/C /5030ANDGasoline Range Organics
Diesel Range
mg/L 10/19/2210/19/221.0 EPA 8015C/3510BNDDiesel Range Organics
Project Name: Tejedas Market Monitoring Wells CtF WO#: 22J1355
www.ChemtechFord.com
Page 2 of 8Page 2 of 8
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
Wasatch Environmental
Chris Nolan
2410 West California Avenue
Salt Lake City, UT 84104
PO#:
Receipt:
Date Reported:
Project Name:
2544-001A
10/18/22 13:05 @ 12.1 °C
10/27/2022
Tejedas Market Monitoring Wells
Sample ID: MW-2
Lab ID: 22J1355-02Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 10/18/22 10:05
Preparation
Date/Time
Sampled By: Client
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 10/24/2210/24/220.005 EPA 8260D /5030A0.024Benzene
mg/L 10/24/2210/24/220.012 EPA 8260D /5030A0.275Ethylbenzene
mg/L 10/24/2210/24/220.005 EPA 8260D /5030ANDMethyl tert-Butyl Ether (MTBE)
mg/L 10/24/2210/24/220.012 EPA 8260D /5030ANDNaphthalene
mg/L 10/24/2210/24/220.012 EPA 8260D /5030ANDToluene
mg/L 10/24/2210/24/220.012 EPA 8260D /5030A0.289Xylenes, total
Gasoline Range
mg/L 10/24/2210/24/220.125 EPA 8260B/C /5030A0.746Gasoline Range Organics
Diesel Range
mg/L 10/19/2210/19/221.0 EPA 8015C/3510BNDDiesel Range Organics
Project Name: Tejedas Market Monitoring Wells CtF WO#: 22J1355
www.ChemtechFord.com
Page 3 of 8Page 3 of 8
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
Wasatch Environmental
Chris Nolan
2410 West California Avenue
Salt Lake City, UT 84104
PO#:
Receipt:
Date Reported:
Project Name:
2544-001A
10/18/22 13:05 @ 12.1 °C
10/27/2022
Tejedas Market Monitoring Wells
Sample ID: MW-3
Lab ID: 22J1355-03Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 10/18/22 10:40
Preparation
Date/Time
Sampled By: Client
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 10/21/2210/21/220.005 EPA 8260D /5030A0.010Benzene
mg/L 10/21/2210/21/220.012 EPA 8260D /5030A0.046Ethylbenzene
mg/L 10/21/2210/21/220.005 EPA 8260D /5030ANDMethyl tert-Butyl Ether (MTBE)
mg/L 10/21/2210/21/220.012 EPA 8260D /5030ANDNaphthalene
mg/L 10/21/2210/21/220.012 EPA 8260D /5030ANDToluene
mg/L 10/21/2210/21/220.012 EPA 8260D /5030A0.071Xylenes, total
Gasoline Range
mg/L 10/21/2210/21/220.125 EPA 8260B/C /5030A0.127Gasoline Range Organics
Diesel Range
mg/L 10/19/2210/19/221.0 EPA 8015C/3510BNDDiesel Range Organics
Project Name: Tejedas Market Monitoring Wells CtF WO#: 22J1355
www.ChemtechFord.com
Page 4 of 8Page 4 of 8
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
Wasatch Environmental
Chris Nolan
2410 West California Avenue
Salt Lake City, UT 84104
PO#:
Receipt:
Date Reported:
Project Name:
2544-001A
10/18/22 13:05 @ 12.1 °C
10/27/2022
Tejedas Market Monitoring Wells
Sample ID: MW-4
Lab ID: 22J1355-04Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 10/18/22 11:50
Preparation
Date/Time
Sampled By: Client
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 10/24/2210/24/220.005 EPA 8260D /5030A0.013Benzene
mg/L 10/24/2210/24/220.012 EPA 8260D /5030A0.056Ethylbenzene
mg/L 10/24/2210/24/220.005 EPA 8260D /5030ANDMethyl tert-Butyl Ether (MTBE)
mg/L 10/24/2210/24/220.012 EPA 8260D /5030ANDNaphthalene
mg/L 10/24/2210/24/220.012 EPA 8260D /5030ANDToluene
mg/L 10/24/2210/24/220.012 EPA 8260D /5030A0.063Xylenes, total
Gasoline Range
mg/L 10/24/2210/24/220.125 EPA 8260B/C /5030A0.258Gasoline Range Organics
Diesel Range
mg/L 10/19/2210/19/221.0 EPA 8015C/3510BNDDiesel Range Organics
Project Name: Tejedas Market Monitoring Wells CtF WO#: 22J1355
www.ChemtechFord.com
Page 5 of 8Page 5 of 8
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
Wasatch Environmental
Chris Nolan
2410 West California Avenue
Salt Lake City, UT 84104
PO#:
Receipt:
Date Reported:
Project Name:
2544-001A
10/18/22 13:05 @ 12.1 °C
10/27/2022
Tejedas Market Monitoring Wells
Sample ID: MW-5
Lab ID: 22J1355-05Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 10/18/22 11:05
Preparation
Date/Time
Sampled By: Client
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 10/24/2210/24/220.005 EPA 8260D /5030ANDBenzene
mg/L 10/24/2210/24/220.012 EPA 8260D /5030ANDEthylbenzene
mg/L 10/24/2210/24/220.005 EPA 8260D /5030ANDMethyl tert-Butyl Ether (MTBE)
mg/L 10/24/2210/24/220.012 EPA 8260D /5030ANDNaphthalene
mg/L 10/24/2210/24/220.012 EPA 8260D /5030ANDToluene
mg/L 10/24/2210/24/220.012 EPA 8260D /5030ANDXylenes, total
Gasoline Range
mg/L 10/24/2210/24/220.125 EPA 8260B/C /5030ANDGasoline Range Organics
Diesel Range
mg/L 10/24/2210/21/221.0 EPA 8015C/3510BNDDiesel Range Organics
Project Name: Tejedas Market Monitoring Wells CtF WO#: 22J1355
www.ChemtechFord.com
Page 6 of 8Page 6 of 8
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
Wasatch Environmental
Chris Nolan
2410 West California Avenue
Salt Lake City, UT 84104
PO#:
Receipt:
Date Reported:
Project Name:
2544-001A
10/18/22 13:05 @ 12.1 °C
10/27/2022
Tejedas Market Monitoring Wells
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.
Project Name: Tejedas Market Monitoring Wells CtF WO#: 22J1355
www.ChemtechFord.com
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