DERR-2024-011694

MEMORANDUM

TO: LPST File

THROUGH: Morgan Atkinson, PST Branch Manager
Division of Environmental Response and Remediation

Mike Pecorelli, EAP Section Manager
Division of Environmental Response and Remediation

Scott Everett, Toxicologist
Division of Environmental Response and Remediation

FROM: Alex Thompson, EAP Project Manager
Division of Environmental Response and Remediation

DATE: October 8, 2024

SUBJECT: LUST NFA - Closure Review Memo
Speedway #9411, located at 12592 South 1300 West, Riverton, Utah, 84065
Facility Identification No. 4001842, Release Site OKZ

On October 8, 2024 the Division of Environmental Response and Remediation received a closure
notice for three underground storage tanks located at the #9411 Speedway. During excavation
activities soil under two of the dispensers indicated potential petroleum contamination. A soil
excavation was conducted and 53.68 tons of contaminated soils were removed. No groundwater was
encountered. Samples were taken after the excavation to serve as confirmation samples. These and all
samples indicated petroleum contamination was under initial screening levels. While minimal levels of
contamination remain at the site, it is neither economically appropriate nor technologically feasible to
remediate said contamination any further.

The NFA package with supporting documents can be found here:

Please initial this memo when your closure package review is complete. If you have questions, comments
or concerns with the closure, please discuss with the project manager or request a closure committee
discussion.

Once this memo is complete, the NFA letter will be initiated through Adobe Sign for final signatures.
https://drive.google.com/drive/folders/136MgBlGkB9_Ri1vt9r0rqcXGBJ9U5aJC

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MP