DERR-2024-012483

24-10-25 July and October 2024 Groundwater Monitoring Report

MAVERIK, INC.
185 S State Street #800
Salt Lake, UT 84111
Phone: [phone]
E-mail: [e-mail]
October 25, 2024

Ms. Hillary Mason
Utah Department of Environmental Quality
Division of Environmental Response and Remediation
195 North 1950 West
P.O. Box 144840
Salt Lake City, Utah 84114-4840

RE: Groundwater Monitoring Report - July and October 2024
Former Maverik Store #199
1707 S 300 W
Salt Lake City, Utah
Facility ID# 4001356, Release OJQ

Dear Ms. Mason:

Maverik, Inc. (Maverik) is pleased to provide results from the past two quarterly groundwater monitoring
events performed on July 26 and October 4, 2024, at the former Maverik Store #199 site in Salt Lake
City, Utah. Groundwater sampling and analysis results are discussed in this report.

GROUNDWATER SAMPLING AND ANALYSIS

Groundwater monitoring field activities were performed on July 26, 2024, and October 4, 2024, by
Maverik personnel according to Utah Division of Environmental Response and Remediation (DERR)
protocols. Mark Stewart, a Utah certified soil and groundwater sampler (GS-1842), gauged the
monitoring wells and collected groundwater samples for analysis. Groundwater samples were
collected from all five monitoring wells (MW-1, MW-2, MW-3, MW-4 and MW-5) during both sampling
events (see Figures 1 and 2).

Chemtech-Ford Analytical Laboratories of Sandy, Utah performed the groundwater analyses.
Samples were analyzed for benzene, toluene, ethylbenzene, total xylenes, naphthalene (BTEXN),
methyl tertiary-butyl ether (MTBE) according to EPA SW-846 Method 8260D, total petroleum
Ms. Hillary Mason
October 25, 2024
Page 2
hydrocarbons – gasoline range organics (TPH-GRO) according to EPA SW-846 Method 8260B/C and
total petroleum hydrocarbons - diesel range organics (TPH-DRO) using EPA SW-846 Method 8015C.
Chain-of-Custody protocol was observed.

GROUNDWATER MONITORING RESULTS

Static Water Level Evaluation
The relative heights for the top of casing elevations and groundwater depth (based on laser level
surveys established over an arbitrary base point) were determined, as shown in Table 1. Groundwater
depths measured in July from the top of casing at each well ranged from 7.01 to 8.15 ft. and water
elevation, relative to the baseline, differed by up to 0.26 feet across the site and October measurements
differed by up to 0.25 feet across the site. Groundwater flow was determined to be in the
west/northwest direction during both events.

Groundwater Quality Evaluation
Groundwater analytical results associated with the wells are summarized in Table 2. Analytical reports
and Chain-of-Custody forms are attached. In July 2024, concentrations were above Utah Initial
Screening Levels (ISLs), but well below Utah Risk Based Tier 1 Screening Levels (RBCA Tier 1 SLs),
for: Total Petroleum Hydrocarbon – Diesel Range Organics (TPH-DRO) in MW-2 @ 2.3 mg/L and
benzene @ 0.007 mg/L in MW-3. In October 2024, concentrations were above ISLs, and again well
below RBCA Tier 1 SLs, in MW-2 for: TPH-Gasoline Range Organics (TPH-GRO) @ 2.3 mg/L, TPH-
DRO @ 2.9 mg/L, and benzene @ 0.009 mg/L. All other samples and constituents were either below
laboratory detection levels or at or below ISLs.

Please note that the well labeled MW-10 in the attached laboratory reports was a duplicate for MW-3,
in July, and MW-5, in October. The results for both duplicates correlated very well with the results of
the original samples. Also note that, although this is a groundwater monitoring report, for
completeness, I have included as Table 3 soil sampling results taken on May 14, 2024, in which all
constituents in all bores were at or below laboratory detection levels.

Ms. Hillary Mason
October 25, 2024
Page 3
CONCLUSION AND FUTURE COURSE OF ACTION

In three rounds of sampling, the two mentioned previously in this report, and sampling conducted on
5/15/2024, all analytes were below laboratory detection levels in MW-1 (located just east and
upgradient of the former tank basin) and MW-4 and MW-5 (both of which are downgradient of the
former tank basin). All analytes were also below laboratory detection levels in MW-3 during the
October sampling event (which is upgradient of the tank basin). MW-2, which is located within the
former tank basin away from the property boundaries and utilities, had one or more analytes above
ISLs during all three sampling events.

Based on the findings presented in this report, that the analytical results during the last two quarterly
events were all significantly below RBCA Tier 1 SLs, and the few constituents that had results just
above ISLs are upgradient of the former tank basin or away from property boundaries and utilities,
Maverik respectfully requests that DERR consider issuance of a No Further Action letter for this site.

We appreciate your assistance with this site. Please contact me at 801.438.4884 should you have any
questions.

Sincerely,
Maverik, Inc.

Mark Stewart, P.E.
Sr Environmental Engineer

Attachments:
Figure 1 – Well Location and Groundwater Flow Map (July 2024)
Figure 2 – Well Location and Groundwater Flow Map (October 2024)

Table 1 – Summary of Groundwater Elevation Data
Table 2 – Summary of Groundwater Quality

Laboratory Analysis Report: Chemtech-Ford 24G2142
Chemtech-Ford 24J0495

FIGURE 1FORMER MAVERIK STORE #199
SLC, UT
DATE PREPARED: 10/21/2024
MAVERIK, INC
ENVIRONMENTAL DEPARTMENT
185 S STATE ST #800
SALT LAKE CITY, UT 84111
0'15'30'
1" = 30'
N
LEGEND
WATER
SEWER
GAS
ELECTRICAL
Maverik #199
300 WEST
FORMER FUEL CANOPY & DISPENSERS
POWER POLE
17
0
0

S
O
U
T
H
COMMUNICATIONS
1707 S. 300 W.
Salt Lake City, UT
Monitoring Well Locations
MW-1
MW-3
MW-2
MW-5
MW-4
FORMER UST BASIN
FLOW
P
A
T
H
-0.40'
-0.43'
0.00'-0.55'
-0.64'-0.64'Relative Elevation
WELL LOCATION AND GROUNDWATER
FLOW (JULY 2024)
FIGURE 2FORMER MAVERIK STORE #199
SLC, UT
DATE PREPARED: 10/21/2024
MAVERIK, INC
ENVIRONMENTAL DEPARTMENT
185 S STATE ST #800
SALT LAKE CITY, UT 84111
0'15'30'
1" = 30'
N
LEGEND
WATER
SEWER
GAS
ELECTRICAL
Maverik #199
300 WEST
FORMER FUEL CANOPY & DISPENSERS
POWER POLE
17
0
0

S
O
U
T
H
COMMUNICATIONS
1707 S. 300 W.
Salt Lake City, UT
Monitoring Well Locations
MW-1
MW-3
MW-2
MW-5
MW-4
WELL LOCATION AND GROUNDWATER
FLOW (OCT 2024)
FORMER UST BASIN
FLO
W
P
A
T
H
0.00'
-0.06'
-0.15'-0.16'
-0.25'-0.25'Relative Elevation
WELL
IDENTIFICATION DATE
05/15/24 0.00 7.83 -0.70
07/26/24 3.96 -0.06 8.15 -0.40
10/04/24 3.96 -0.06 8.14 0.00
05/15/24 0.34 7.57 -0.78
07/26/24 4.51 -0.61 7.63 -0.43
10/04/24 4.51 -0.61 7.65 -0.06
05/15/24 0.73 8.64 -2.24
07/26/24 3.90 0.00 7.81 0.00
10/04/24 3.90 0.00 8.35 -0.15
05/15/24 -0.12 7.25 0.00
07/26/24 4.88 -0.98 7.38 -0.55
10/04/24 4.88 -0.98 7.38 -0.16
05/15/24 1.23 7.89 -0.99
07/26/24 5.34 -1.44 7.01 -0.64
10/04/24 5.34 -1.44 7.01 -0.25
TABLE 1
DEPTH TO WATER
(FT)
RELATIVE
ELEVATION (FT)
SURVEY
MEASUREMENT (FT)
MW-1
MW-2
SLC , UTAH
MW-4
MW-5
TOP OF CASING
ELEVATION (FT)
MAVERIK STORE #199
SUMMARY OF GROUNDWATER ELEVATION DATA
MW-3
Page 1 of 1
WELL DATE
IDENTIFICATION
5/15/2024 <0.005 <0.012 <0.012 <0.012 <0.012 <0.005 <0.125 <1.0
7/26/2024 <0.005 <0.012 <0.012 <0.038 <0.012 <0.008 <0.125 <1.0
10/4/2024 <0.005 <0.012 <0.012 <0.038 <0.012 <0.008 <0.125 <1.0
5/15/2024 0.008 0.045 0.251 5.18 0.281 <0.005 16.9 9.5
7/26/2024 0.005 <0.012 <0.012 <0.038 <0.012 <0.008 <0.125 2.3
10/4/2024 0.009 <0.012 0.136 0.192 0.129 <0.008 3.52 2.9
5/15/2024 0.022 <0.012 <0.012 0.043 <0.012 <0.005 0.193 <1.0
7/26/2024 0.007 <0.012 <0.012 <0.038 <0.012 <0.008 <0.125 <1.0
10/4/2024 <0.005 <0.012 <0.012 <0.038 <0.012 <0.008 <0.125 <1.0
5/15/2024 <0.005 <0.012 <0.012 <0.012 <0.012 <0.005 <0.125 <1.0
7/26/2024 <0.005 <0.012 <0.012 <0.038 <0.012 <0.008 <0.125 <1.0
10/4/2024 <0.005 <0.012 <0.012 <0.038 <0.012 <0.008 <0.125 <1.0
5/15/2024 <0.005 <0.012 <0.012 <0.012 <0.012 <0.005 <0.125 <1.0
07/26/24 <0.005 <0.012 <0.012 <0.038 <0.012 <0.008 <0.125 <1.0
10/4/2024 <0.005 <0.012 <0.012 <0.038 <0.012 <0.008 <0.125 <1.0
Utah ISLs 0.005 1 0.7 10 0.7 0.2 1 1
RBCA Tier 1 SLs 0.3 3 4 10 0.7 0.2 10 10
Notes:1. Samples analyzed by Chemtech-Ford Laboratory of Salt Lake City.
2. Bolded values, represent concentrations exceeding Utah Initial Screening Levels (Utah ISLs)
3. Highlighted values, if any, represent concentrations exceeding the RBCA Tier 1 Screening Levels (RBCA Tier 1 SLs)
MW-5
SUMMARY OF GROUNDWATER QUALITY
TABLE 2
ANALYTE CONCENTRATIONS (mg/L)
BENZENE TOLUENE ETHYLBENZENE NAPHTHALENE MTBE TPH-GRO
MW-4
XYLENES TPH-DRO
SLC, UTAH
MAVERIK STORE #199
MW-1
MW-2
MW-3
SS-1 05/14/24 1.2 <0.01 <0.04 <0.04 <0.04 <0.04 <0.01 <0.358 <71
SS-2 05/14/24 No samples taken. This location was within the old tank basin and contained clean fill material.
SS-3 05/14/24 1.6 <0.01 <0.03 <0.03 0.03 <0.03 <0.01 <0.322 <72
SS-4 05/14/24 0.3 <0.01 <0.03 <0.03 <0.03 <0.03 <0.01 <0.34 <71
SS-5 05/14/24 0.0 <0.01 <0.04 <0.04 <0.04 <0.04 <0.01 <0.355 <75
0.2 9 5 142 51 0.3 150 500
0.9 25 23 142 51 0.3 1500 5000
Notes:1. Samples analyzed by Chemtech-Ford Laboratory of Salt Lake City.
2. Bolded values, if any, represent concentrations exceeding Utah Initial Screening Levels (Utah ISLs)
RBCA Tier 1 SLs
Utah ISLs
ETHYLBENZENE XYLENES NAPHTHALENEDATEPID (ppm)MTBE TPH-GRO TPH-DRO
TABLE 3
SUMMARY OF SOIL QUALITY DATA
MAVERIK STORE #199
SLC, UTAH
ANALYTE CONCENTRATIONS (mg/kg)
BENZENE TOLUENE

Laboratory Analysis Reports:
Chemtech Ford 24G2142
Chemtech Ford 24J0495

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
Maverik, Inc.
Attn: Mark Stewart
185 S State Street Suite 800
Salt Lake City, UT 84111
Work Order: 24G2142
Project: SLC 199
8/7/2024
Approved By:
Reed Hendricks, Lab Director
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 12
_____________________________________________________________________________________________
Maverik, Inc.
Project: SLC 199
Project Manager: Mark Stewart
Laboratory ID Sample Name
24G2142-01 MW-1
24G2142-02 MW-2
24G2142-03 MW-3
24G2142-04 MW-4
24G2142-05 MW-5
24G2142-06 MW-10
______________________________________________________________________________________________
Work Order Report Narrative
Sample Preparation
All samples were prepared within method specified holding times. No preparation issues were noted.
Method Blanks
All blank values were within method acceptance criteria. No blank values exceeded the minimum reporting limit for any
analysis in this work order.
Laboratory Control Samples
All laboratory control samples were within method acceptance criteria.
Method Spikes
All method spike recoveries were within method acceptance criteria, except as noted by qualifying flags.
Method Spike Duplicates
All method spike duplicates were within method acceptance criteria, except as noted by qualifying flags.
Corrective Actions
There are no corrective actions associated with this work order.
www.ChemtechFord.com
Project Name: SLC 199 CtF WO#: 24G2142
Page 2 of 12
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
Maverik, Inc.
Mark Stewart
185 S State Street Suite 800
Salt Lake City, UT 84111
PO#:
Receipt:
Date Reported:
Project Name:
01-199-7080-11
7/26/24 13:51 @ 4.1 °C
8/7/2024
SLC 199
Sample ID: MW-1
Lab ID: 24G2142-01Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 7/26/24 11:30
Preparation
Date/Time
Sampled By: Mark Stewart
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 7/31/247/31/240.005 EPA 8260D/5030BNDBenzene
mg/L 7/31/247/31/240.012 EPA 8260D/5030BNDEthylbenzene
mg/L 7/31/247/31/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 7/31/247/31/240.012 EPA 8260D/5030BNDNaphthalene
mg/L 7/31/247/31/240.012 EPA 8260D/5030BNDToluene
mg/L 7/31/247/31/240.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 7/31/247/31/240.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 7/29/247/29/241.0 EPA 8015 CNDDiesel Range Organics
Project Name: SLC 199 CtF WO#: 24G2142
www.ChemtechFord.com
Page 3 of 12Page 3 of 12
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
Maverik, Inc.
Mark Stewart
185 S State Street Suite 800
Salt Lake City, UT 84111
PO#:
Receipt:
Date Reported:
Project Name:
01-199-7080-11
7/26/24 13:51 @ 4.1 °C
8/7/2024
SLC 199
Sample ID: MW-2
Lab ID: 24G2142-02Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 7/26/24 11:35
Preparation
Date/Time
Sampled By: Mark Stewart
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 7/31/247/31/240.005 EPA 8260D/5030B0.005Benzene
mg/L 7/31/247/31/240.012 EPA 8260D/5030BNDEthylbenzene
mg/L 7/31/247/31/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 7/31/247/31/240.012 EPA 8260D/5030BNDNaphthalene
mg/L 7/31/247/31/240.012 EPA 8260D/5030BNDToluene
mg/L 7/31/247/31/240.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 7/31/247/31/240.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 7/29/247/29/241.0 EPA 8015 C2.3Diesel Range Organics
Project Name: SLC 199 CtF WO#: 24G2142
www.ChemtechFord.com
Page 4 of 12Page 4 of 12
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
Maverik, Inc.
Mark Stewart
185 S State Street Suite 800
Salt Lake City, UT 84111
PO#:
Receipt:
Date Reported:
Project Name:
01-199-7080-11
7/26/24 13:51 @ 4.1 °C
8/7/2024
SLC 199
Sample ID: MW-3
Lab ID: 24G2142-03Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 7/26/24 11:50
Preparation
Date/Time
Sampled By: Mark Stewart
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 7/31/247/31/240.005 EPA 8260D/5030B0.007Benzene
mg/L 7/31/247/31/240.012 EPA 8260D/5030BNDEthylbenzene
mg/L 7/31/247/31/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 7/31/247/31/240.012 EPA 8260D/5030BNDNaphthalene
mg/L 7/31/247/31/240.012 EPA 8260D/5030BNDToluene
mg/L 7/31/247/31/240.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 7/31/247/31/240.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 7/29/247/29/241.0 EPA 8015 CNDDiesel Range Organics
Project Name: SLC 199 CtF WO#: 24G2142
www.ChemtechFord.com
Page 5 of 12Page 5 of 12
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
Maverik, Inc.
Mark Stewart
185 S State Street Suite 800
Salt Lake City, UT 84111
PO#:
Receipt:
Date Reported:
Project Name:
01-199-7080-11
7/26/24 13:51 @ 4.1 °C
8/7/2024
SLC 199
Sample ID: MW-4
Lab ID: 24G2142-04Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 7/26/24 12:00
Preparation
Date/Time
Sampled By: Mark Stewart
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 7/31/247/31/240.005 EPA 8260D/5030BNDBenzene
mg/L 7/31/247/31/240.012 EPA 8260D/5030BNDEthylbenzene
mg/L 7/31/247/31/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 7/31/247/31/240.012 EPA 8260D/5030BNDNaphthalene
mg/L 7/31/247/31/240.012 EPA 8260D/5030BNDToluene
mg/L 7/31/247/31/240.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 7/31/247/31/240.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 7/29/247/29/241.0 EPA 8015 CNDDiesel Range Organics
Project Name: SLC 199 CtF WO#: 24G2142
www.ChemtechFord.com
Page 6 of 12Page 6 of 12
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
Maverik, Inc.
Mark Stewart
185 S State Street Suite 800
Salt Lake City, UT 84111
PO#:
Receipt:
Date Reported:
Project Name:
01-199-7080-11
7/26/24 13:51 @ 4.1 °C
8/7/2024
SLC 199
Sample ID: MW-5
Lab ID: 24G2142-05Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 7/26/24 12:10
Preparation
Date/Time
Sampled By: Mark Stewart
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 7/31/247/31/240.005 EPA 8260D/5030BNDBenzene
mg/L 7/31/247/31/240.012 EPA 8260D/5030BNDEthylbenzene
mg/L 7/31/247/31/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 7/31/247/31/240.012 EPA 8260D/5030BNDNaphthalene
mg/L 7/31/247/31/240.012 EPA 8260D/5030BNDToluene
mg/L 7/31/247/31/240.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 7/31/247/31/240.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 7/29/247/29/241.0 EPA 8015 CNDDiesel Range Organics
Project Name: SLC 199 CtF WO#: 24G2142
www.ChemtechFord.com
Page 7 of 12Page 7 of 12
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
Maverik, Inc.
Mark Stewart
185 S State Street Suite 800
Salt Lake City, UT 84111
PO#:
Receipt:
Date Reported:
Project Name:
01-199-7080-11
7/26/24 13:51 @ 4.1 °C
8/7/2024
SLC 199
Sample ID: MW-10
Lab ID: 24G2142-06Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 7/26/24 11:52
Preparation
Date/Time
Sampled By: Mark Stewart
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 7/31/247/31/240.005 EPA 8260D/5030BNDBenzene
mg/L 7/31/247/31/240.012 EPA 8260D/5030BNDEthylbenzene
mg/L 7/31/247/31/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 7/31/247/31/240.012 EPA 8260D/5030BNDNaphthalene
mg/L 7/31/247/31/240.012 EPA 8260D/5030BNDToluene
mg/L 7/31/247/31/240.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 7/31/247/31/240.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 7/29/247/29/241.0 EPA 8015 CNDDiesel Range Organics
Project Name: SLC 199 CtF WO#: 24G2142
www.ChemtechFord.com
Page 8 of 12Page 8 of 12
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
Maverik, Inc.
Mark Stewart
185 S State Street Suite 800
Salt Lake City, UT 84111
PO#:
Receipt:
Date Reported:
Project Name:
01-199-7080-11
7/26/24 13:51 @ 4.1 °C
8/7/2024
SLC 199
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: SLC 199 CtF WO#: 24G2142
www.ChemtechFord.com
Page 9 of 12Page 9 of 12
Page 10 of 12
QC Report for Work Order (WO) - 24G2142
% Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte
Blank - EPA 8015 C
QC Sample ID: BYG1268-BLK1 Batch: BYG1268
Date Prepared: 07/29/2024 Date Analyzed: 07/29/2024
Diesel Range Organics ND 1.0 1.00
LCS - EPA 8015 C
QC Sample ID: BYG1268-BS1 Batch: BYG1268
Date Prepared: 07/29/2024 Date Analyzed: 07/29/2024
Diesel Range Organics 111 50 - 150 44 40.0 1.0 1.00
Matrix Spike - EPA 8015 C
QC Sample ID: BYG1268-MS1 QC Source Sample: 24G2142-01Batch: BYG1268
Date Prepared: 07/29/2024 Date Analyzed: 07/29/2024
Diesel Range Organics 103 50 - 150 41 ND 40.0 1.0 1.00
Matrix Spike Dup - EPA 8015 C
QC Sample ID: BYG1268-MSD1 QC Source Sample: 24G2142-01Batch: BYG1268
Date Prepared: 07/29/2024 Date Analyzed: 07/29/2024
Diesel Range Organics 107 4.45 50 - 150 20 43 ND 40.0 1.0 1.00
CtF WO#: 24G2142
www.ChemtechFord.com Page 11 of 12
QC Report for Work Order (WO) - 24G2142
% Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte
Blank - EPA 8260D
QC Sample ID: BYG1386-BLK1 Batch: BYG1386
Date Prepared: 07/31/2024 Date Analyzed: 07/31/2024
Benzene ND 0.0004 1.00
Ethylbenzene ND 0.001 1.00
Methyl tert-Butyl Ether (MTBE)ND 0.0006 1.00
Naphthalene ND 0.001 1.00
Toluene ND 0.001 1.00
Xylenes, total ND 0.003 1.00
LCS - EPA 8260D
QC Sample ID: BYG1386-BS1 Batch: BYG1386
Date Prepared: 07/31/2024 Date Analyzed: 07/31/2024
Benzene 96.2 70 - 130 0.010 0.0100 0.0004 1.00
Ethylbenzene 93.7 70 - 130 0.009 0.0100 0.001 1.00
Methyl tert-Butyl Ether (MTBE)114 70 - 130 0.011 0.0100 0.0006 1.00
Naphthalene 70.6 70 - 130 0.007 0.0100 0.001 1.00
Toluene 97.8 70 - 130 0.010 0.0100 0.001 1.00
Xylenes, total 94.7 70 - 130 0.028 0.0300 0.003 1.00
Matrix Spike - EPA 8260D
QC Sample ID: BYG1386-MS1 QC Source Sample: 24G2142-01Batch: BYG1386
Date Prepared: 07/31/2024 Date Analyzed: 07/31/2024
Benzene 92.3 70 - 130 0.115 ND 0.125 0.005 1.00
Ethylbenzene 74.2 70 - 130 0.093 ND 0.125 0.012 1.00
Methyl tert-Butyl Ether (MTBE)121 70 - 130 0.151 ND 0.125 0.008 1.00
Naphthalene 39.4 70 - 130 0.049 ND 0.125 0.012 1.00
RPD-MSOut - The RPD between MS and MSD is outside established control limits.
Toluene 76.4 70 - 130 0.096 ND 0.125 0.012 1.00
Xylenes, total 54.3 70 - 130 0.204 ND 0.375 0.038 1.00
RPD-MSOut - The RPD between MS and MSD is outside established control limits.
Matrix Spike Dup - EPA 8260D
QC Sample ID: BYG1386-MSD1 QC Source Sample: 24G2142-01Batch: BYG1386
Date Prepared: 07/31/2024 Date Analyzed: 07/31/2024
Benzene 86.8 6.14 70 - 130 20 0.108 ND 0.125 0.005 1.00
Ethylbenzene 65.7 12.2 70 - 130 25 0.082 ND 0.125 0.012 1.00
QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was
acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable
recovery of the LCS and the RPD.
Methyl tert-Butyl Ether (MTBE)124 2.37 70 - 130 25 0.155 ND 0.125 0.008 1.00
Naphthalene 29.8 27.7 70 - 130 25 0.037 ND 0.125 0.012 1.00
RPD-MSOut - The RPD between MS and MSD is outside established control limits.
Toluene 66.9 13.3 70 - 130 20 0.084 ND 0.125 0.012 1.00
QM-RPD - The recovery was outside acceptance limits for the MS and/or MSD. The RPD between the MS and MSD was
acceptable and indicates the recovery is due to matrix interference. The batch was accepted based on the acceptable
recovery of the LCS and the RPD.
Xylenes, total 39.8 30.7 70 - 130 20 0.149 ND 0.375 0.038 1.00
RPD-MSOut - The RPD between MS and MSD is outside established control limits.
CtF WO#: 24G2142
www.ChemtechFord.com Page 12 of 12
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
Maverik, Inc.
Attn: Mark Stewart
185 S State Street Suite 800
Salt Lake City, UT 84111
Work Order: 24J0495
Project: SLC 199
10/16/2024
Approved By:
Reed Hendricks, Lab Director
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 12
_____________________________________________________________________________________________
Maverik, Inc.
Project: SLC 199
Project Manager: Mark Stewart
Laboratory ID Sample Name
24J0495-01 MW - 1
24J0495-02 MW - 2
24J0495-03 MW - 3
24J0495-04 MW - 4
24J0495-05 MW - 5
24J0495-06 MW - 10
______________________________________________________________________________________________
Work Order Report Narrative
Sample Preparation
All samples were prepared within method specified holding times. No preparation issues were noted.
Method Blanks
All blank values were within method acceptance criteria. No blank values exceeded the minimum reporting limit for any
analysis in this work order.
Laboratory Control Samples
All laboratory control samples were within method acceptance criteria.
Method Spikes
All method spike recoveries were within method acceptance criteria, except as noted by qualifying flags.
Method Spike Duplicates
All method spike duplicates were within method acceptance criteria, except as noted by qualifying flags.
Corrective Actions
There are no corrective actions associated with this work order.
www.ChemtechFord.com
Project Name: SLC 199 CtF WO#: 24J0495
Page 2 of 12
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
Maverik, Inc.
Mark Stewart
185 S State Street Suite 800
Salt Lake City, UT 84111
PO#:
Receipt:
Date Reported:
Project Name:
01-199-7080-11
10/4/24 12:16 @ 5.9 °C
10/16/2024
SLC 199
Sample ID: MW - 1
Lab ID: 24J0495-01Matrix: Water Sample Type: Grab
Flag(s)Units
Analysis
Date/Time
Date Sampled: 10/4/24 10:20
Preparation
Date/Time
Sampled By: Mark Stewart
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 10/14/2410/14/240.005 EPA 8260D/5030BNDBenzene
mg/L 10/14/2410/14/240.012 EPA 8260D/5030BNDEthylbenzene
mg/L 10/14/2410/14/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 10/14/2410/14/240.012 EPA 8260D/5030BNDNaphthalene
mg/L 10/14/2410/14/240.012 EPA 8260D/5030BNDToluene
mg/L 10/14/2410/14/240.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 10/14/2410/14/240.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 10/10/2410/10/241.0 EPA 8015 CNDDiesel Range Organics
Project Name: SLC 199 CtF WO#: 24J0495
www.ChemtechFord.com
Page 3 of 12Page 3 of 12
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
Maverik, Inc.
Mark Stewart
185 S State Street Suite 800
Salt Lake City, UT 84111
PO#:
Receipt:
Date Reported:
Project Name:
01-199-7080-11
10/4/24 12:16 @ 5.9 °C
10/16/2024
SLC 199
Sample ID: MW - 2
Lab ID: 24J0495-02Matrix: Water Sample Type: Grab
Flag(s)Units
Analysis
Date/Time
Date Sampled: 10/4/24 10:25
Preparation
Date/Time
Sampled By: Mark Stewart
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 10/14/2410/14/240.005 EPA 8260D/5030B0.009Benzene
mg/L 10/14/2410/14/240.012 EPA 8260D/5030B0.136Ethylbenzene
mg/L 10/14/2410/14/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 10/14/2410/14/240.012 EPA 8260D/5030B0.129Naphthalene
mg/L 10/14/2410/14/240.012 EPA 8260D/5030BNDToluene
mg/L 10/14/2410/14/240.038 EPA 8260D/5030B0.192Xylenes, total
Gasoline Range
mg/L 10/14/2410/14/240.125 EPA 8260B/C /5030A/[CALC]3.52Gasoline Range Organics
Diesel Range
mg/L 10/10/2410/10/241.0 EPA 8015 C2.9Diesel Range Organics
Project Name: SLC 199 CtF WO#: 24J0495
www.ChemtechFord.com
Page 4 of 12Page 4 of 12
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
Maverik, Inc.
Mark Stewart
185 S State Street Suite 800
Salt Lake City, UT 84111
PO#:
Receipt:
Date Reported:
Project Name:
01-199-7080-11
10/4/24 12:16 @ 5.9 °C
10/16/2024
SLC 199
Sample ID: MW - 3
Lab ID: 24J0495-03Matrix: Water Sample Type: Grab
Flag(s)Units
Analysis
Date/Time
Date Sampled: 10/4/24 10:32
Preparation
Date/Time
Sampled By: Mark Stewart
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 10/14/2410/14/240.005 EPA 8260D/5030BNDBenzene
mg/L 10/14/2410/14/240.012 EPA 8260D/5030BNDEthylbenzene
mg/L 10/14/2410/14/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 10/14/2410/14/240.012 EPA 8260D/5030BNDNaphthalene
mg/L 10/14/2410/14/240.012 EPA 8260D/5030BNDToluene
mg/L 10/14/2410/14/240.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 10/14/2410/14/240.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 10/11/2410/10/241.0 EPA 8015 CNDDiesel Range Organics
Project Name: SLC 199 CtF WO#: 24J0495
www.ChemtechFord.com
Page 5 of 12Page 5 of 12
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
Maverik, Inc.
Mark Stewart
185 S State Street Suite 800
Salt Lake City, UT 84111
PO#:
Receipt:
Date Reported:
Project Name:
01-199-7080-11
10/4/24 12:16 @ 5.9 °C
10/16/2024
SLC 199
Sample ID: MW - 4
Lab ID: 24J0495-04Matrix: Water Sample Type: Grab
Flag(s)Units
Analysis
Date/Time
Date Sampled: 10/4/24 10:40
Preparation
Date/Time
Sampled By: Mark Stewart
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 10/14/2410/14/240.005 EPA 8260D/5030BNDBenzene
mg/L 10/14/2410/14/240.012 EPA 8260D/5030BNDEthylbenzene
mg/L 10/14/2410/14/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 10/14/2410/14/240.012 EPA 8260D/5030BNDNaphthalene
mg/L 10/14/2410/14/240.012 EPA 8260D/5030BNDToluene
mg/L 10/14/2410/14/240.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 10/14/2410/14/240.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 10/10/2410/10/241.0 EPA 8015 CNDDiesel Range Organics
Project Name: SLC 199 CtF WO#: 24J0495
www.ChemtechFord.com
Page 6 of 12Page 6 of 12
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
Maverik, Inc.
Mark Stewart
185 S State Street Suite 800
Salt Lake City, UT 84111
PO#:
Receipt:
Date Reported:
Project Name:
01-199-7080-11
10/4/24 12:16 @ 5.9 °C
10/16/2024
SLC 199
Sample ID: MW - 5
Lab ID: 24J0495-05Matrix: Water Sample Type: Grab
Flag(s)Units
Analysis
Date/Time
Date Sampled: 10/4/24 11:00
Preparation
Date/Time
Sampled By: Mark Stewart
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 10/14/2410/14/240.005 EPA 8260D/5030BNDBenzene
mg/L 10/14/2410/14/240.012 EPA 8260D/5030BNDEthylbenzene
mg/L 10/14/2410/14/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 10/14/2410/14/240.012 EPA 8260D/5030BNDNaphthalene
mg/L 10/14/2410/14/240.012 EPA 8260D/5030BNDToluene
mg/L 10/14/2410/14/240.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 10/14/2410/14/240.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 10/10/2410/10/241.0 EPA 8015 CNDDiesel Range Organics
Project Name: SLC 199 CtF WO#: 24J0495
www.ChemtechFord.com
Page 7 of 12Page 7 of 12
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
Maverik, Inc.
Mark Stewart
185 S State Street Suite 800
Salt Lake City, UT 84111
PO#:
Receipt:
Date Reported:
Project Name:
01-199-7080-11
10/4/24 12:16 @ 5.9 °C
10/16/2024
SLC 199
Sample ID: MW - 10
Lab ID: 24J0495-06Matrix: Water Sample Type: Grab
Flag(s)Units
Analysis
Date/Time
Date Sampled: 10/4/24 11:05
Preparation
Date/Time
Sampled By: Mark Stewart
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 10/14/2410/14/240.005 EPA 8260D/5030BNDBenzene
mg/L 10/14/2410/14/240.012 EPA 8260D/5030BNDEthylbenzene
mg/L 10/14/2410/14/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 10/14/2410/14/240.012 EPA 8260D/5030BNDNaphthalene
mg/L 10/14/2410/14/240.012 EPA 8260D/5030BNDToluene
mg/L 10/14/2410/14/240.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 10/14/2410/14/240.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 10/10/2410/10/241.0 EPA 8015 CNDDiesel Range Organics
Project Name: SLC 199 CtF WO#: 24J0495
www.ChemtechFord.com
Page 8 of 12Page 8 of 12
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
Maverik, Inc.
Mark Stewart
185 S State Street Suite 800
Salt Lake City, UT 84111
PO#:
Receipt:
Date Reported:
Project Name:
01-199-7080-11
10/4/24 12:16 @ 5.9 °C
10/16/2024
SLC 199
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: SLC 199 CtF WO#: 24J0495
www.ChemtechFord.com
Page 9 of 12Page 9 of 12
Page 10 of 12
QC Report for Work Order (WO) - 24J0495
% Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte
Blank - EPA 8015 C
QC Sample ID: BYJ0550-BLK1 Batch: BYJ0550
Date Prepared: 10/10/2024 Date Analyzed: 10/10/2024
Diesel Range Organics ND 1.0 1.00
LCS - EPA 8015 C
QC Sample ID: BYJ0550-BS1 Batch: BYJ0550
Date Prepared: 10/10/2024 Date Analyzed: 10/10/2024
Diesel Range Organics 107 50 - 150 43 40.0 1.0 1.00
Matrix Spike - EPA 8015 C
QC Sample ID: BYJ0550-MS1 QC Source Sample: 24J0495-01Batch: BYJ0550
Date Prepared: 10/10/2024 Date Analyzed: 10/10/2024
Diesel Range Organics 95.3 50 - 150 38 ND 40.0 1.0 1.00
Matrix Spike Dup - EPA 8015 C
QC Sample ID: BYJ0550-MSD1 QC Source Sample: 24J0495-01Batch: BYJ0550
Date Prepared: 10/10/2024 Date Analyzed: 10/10/2024
Diesel Range Organics 106 10.8 50 - 150 20 42 ND 40.0 1.0 1.00
CtF WO#: 24J0495
www.ChemtechFord.com Page 11 of 12
QC Report for Work Order (WO) - 24J0495
% Rec RPD RPD Max MRL DFResultSpk ValueLimitsSource ConcAnalyte
Blank - EPA 8260D
QC Sample ID: BYJ0689-BLK1 Batch: BYJ0689
Date Prepared: 10/14/2024 Date Analyzed: 10/14/2024
Benzene ND 0.0004 1.00
Ethylbenzene ND 0.001 1.00
Methyl tert-Butyl Ether (MTBE)ND 0.0006 1.00
Naphthalene ND 0.001 1.00
Toluene ND 0.001 1.00
Xylenes, total ND 0.003 1.00
LCS - EPA 8260D
QC Sample ID: BYJ0689-BS1 Batch: BYJ0689
Date Prepared: 10/14/2024 Date Analyzed: 10/14/2024
Benzene 90.9 70 - 130 0.009 0.0100 0.0004 1.00
Ethylbenzene 99.9 70 - 130 0.010 0.0100 0.001 1.00
Methyl tert-Butyl Ether (MTBE)82.2 70 - 130 0.008 0.0100 0.0006 1.00
Naphthalene 98.6 70 - 130 0.010 0.0100 0.001 1.00
Toluene 93.8 70 - 130 0.009 0.0100 0.001 1.00
Xylenes, total 100 70 - 130 0.030 0.0300 0.003 1.00
Matrix Spike - EPA 8260D
QC Sample ID: BYJ0689-MS1 QC Source Sample: 24J0495-01Batch: BYJ0689
Date Prepared: 10/14/2024 Date Analyzed: 10/14/2024
Benzene 92.7 70 - 130 0.116 ND 0.125 0.005 1.00
Ethylbenzene 101 70 - 130 0.126 ND 0.125 0.012 1.00
Methyl tert-Butyl Ether (MTBE)75.2 70 - 130 0.094 ND 0.125 0.008 1.00
Naphthalene 97.9 70 - 130 0.122 ND 0.125 0.012 1.00
Toluene 94.0 70 - 130 0.118 ND 0.125 0.012 1.00
Xylenes, total 99.5 70 - 130 0.373 ND 0.375 0.038 1.00
Matrix Spike Dup - EPA 8260D
QC Sample ID: BYJ0689-MSD1 QC Source Sample: 24J0495-01Batch: BYJ0689
Date Prepared: 10/14/2024 Date Analyzed: 10/14/2024
Benzene 92.4 0.324 70 - 130 20 0.116 ND 0.125 0.005 1.00
Ethylbenzene 96.9 3.85 70 - 130 25 0.121 ND 0.125 0.012 1.00
Methyl tert-Butyl Ether (MTBE)75.8 0.795 70 - 130 25 0.095 ND 0.125 0.008 1.00
Naphthalene 103 5.27 70 - 130 25 0.129 ND 0.125 0.012 1.00
Toluene 93.5 0.533 70 - 130 20 0.117 ND 0.125 0.012 1.00
Xylenes, total 98.7 0.774 70 - 130 20 0.370 ND 0.375 0.038 1.00
CtF WO#: 24J0495
www.ChemtechFord.com Page 12 of 12