DERR-2025-005403

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. 800346-3128
www.deq.utah.gov
Printed on 100% recycled paper
State of Utah
SPENCER J. COX
Governor
DEIDRE HENDERSON
Lieutenant Governor
Department of
Environmental Quality
Tim Davis
Executive Director
DIVISION OF ENVIRONMENTAL
RESPONSE AND REMEDIATION
Brent H. Everett
Director ERRL-0254-25
July 22, 2025
CERTIFIED MAIL
RETURN RECEIPT REQUESTED
James Blankenau
Intermountain Health
383 West Vine Street
Murray, Utah 84123
Re:Additional Sampling Requirements
Former Expressway Gas & Go, 6250 South Highland Drive, Murray
Facility ID 4002414, Release MIO
Dear Mr. Blankenau:
On October 28, 2024, the Division of Environmental Response and Remediation (DERR)
received a Groundwater Monitoring report for the above-referenced site. After reviewing this
information, the DERR project manager has recommended further investigation to evaluate the
subsurface contamination. During the petroleum storage tank (PST) investigation activities in
September 2024, groundwater samples were obtained, indicating concentrations above State-
established applicable standards.
The Division Director requires two semi-annual groundwater monitoring events: one in
September 2025 and another in March 2026. All three project monitoring wells shall be included in
each event. All environmental samples must be collected by a Utah-certified groundwater and soil
sampler following the sampling protocol as outlined in Utah Admin. Code R311-205. The report
associated with these requirements must be submitted to our office within 30 days of each sampling
event. Environmental samples must be analyzed for gasoline using the methods indicated in the
attached Table of Analytical Methods for Sampling.
If you have any questions, please contact Eileen Brennan, the DERR project manager, at
[phone].
Sincerely,
Brent H. Everett, Director
Division of Environmental Response and Remediation
BHE/EB/rr
Facility ID 4002414
Page 2
Enclosure: Table of Analytical Methods for Sampling
cc: Ron Lund, Environmental Health Director, Salt Lake County Health Department
Eric Peterson, Environmental Health Deputy, Salt Lake County Health Department
Chris Nolan, P.G., Wasatch Environmental, Inc.
Analytical Methods for Environmental Sampling at
Petroleum Storage Tank Sites in Utah
(September 2022)

Substance or
Product Type
Contaminant Compounds to be Analyzed for Each
Substance or Product Type
ANALYTICAL METHODS1
Soil, Groundwater
or Surface Water

Gasoline
Total Petroleum Hydrocarbons (purgeable TPH as gasoline
range organics C6 - C10)
EPA 8015 or EPA 8260
Benzene, Toluene, Ethyl benzene, Xylenes, Naphthalene,
(BT EXN) and MTBE
EPA 8021 or EPA 8260

Diesel
Total Petroleum Hydrocarbons (extractable TPH as diesel
range organics C10 – C28)
EPA 8015
Benzene, Toluene, Ethyl benzene, Xylenes, and Naphthalene
(BT EXN)
EPA 8021 or EPA 8260
Used Oil
Oil and Grease (O&G) or
Total Recoverable Petroleum Hydrocarbons (T RPH)
EPA 1664 or
EPA 1664 (SGT*)
Benzene, Toluene, Ethyl benzene, Xylenes, Naphthalene
(BT EXN) & MTBE; and Halogenated Volatile Organic
Compounds (VOX)
EPA 8021 or EPA 8260
New Oil Oil and Grease (O&G) or
Total Recoverable Petroleum Hydrocarbons (T RPH)
EPA 1664 or
EPA 1664 (SGT*)
Other Type of analyses will be based upon the substance or product
stored, and as approved by the DERR Division Director
Method will be based upon the
substance or product type
Unknown
Total Petroleum Hydrocarbons (purgeable TPH as gasoline
range organics C6 - C10)
EPA 8015 or EPA 8260
Total Petroleum Hydrocarbons (extractable TPH as diesel
range organics C10 – C28)
EPA 8015
Oil and Grease (O&G) or
Total Recoverable Petroleum Hydrocarbons (T RPH)
EPA 1664 or
EPA 1664 (SGT*)
Benzene, Toluene, Ethyl benzene, Xylenes, and Naphthalene
(BT EXN) and MT BE; and Halogenated Volatile Organic
Compounds (VOX)
EPA 8021 or EPA 8260

1 The following modifications to these certified methods are considered acceptable by the DERR Division Director:
• Dual column confirmation may n ot be required for TP H and BTEXN/MTBE analysis.
• A micro-extraction or scale-down technique may be used for aqueous samples, but only for the
determination of extractable TP H as diesel range organics (C10 – C28).
• Hexane may be used as an extraction solvent.
• *Silica Gel Treatment (SGT) may be used in the determination of Total Recoverable P etroleum Hydrocarbons.
NOTE: The sample preparation method and any modification(s) to a certified method must be reported by the laboratory.

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383 W . Vine St.
Murray , UT 84123
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