DERR-2024-006776

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. [phone]
www.deq.utah.gov
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State of Utah
SPENCER J. COX
Governor

DEIDRE HENDERSON
Lieutenant Governor
Department of
Environmental Quality

Kimberly D. Shelley
Executive Director

DIVISION OF ENVIRONMENTAL
RESPONSE AND REMEDIATION

Brent H. Everett
Director
ERRL-0167-24
April 29, 2024

CERTIFIED MAIL
RETURN RECEIPT REQUESTED
Lindsay Burt
7290 Weiner Street, Building #383
Hill Air Force Base, Utah 84056

Re:Corrective Action Plan Approval
Site ST061, located at 7290 Weiner Street, Building 383, Hill Air Force Base, Utah
Facility Identification No. 3000212, Release Site GSS
Dear Lindsay Burt:
The Division of Environmental Response and Remediation (DERR) has completed its
review of the Corrective Action Plan (CAP) prepared by HydroGeoLogic, Inc., and APTIM Federal
Services, LLC Joint Venture, submitted to us on May 2, 2023 for the above-referenced facility. The
CAP is in general compliance with Utah Admin. Code R311-211 and R311-202. The DERR makes
no guarantee, implied or otherwise, that the approved CAP will be successful in obtaining
established cleanup levels. In the event that the cleanup goals are not met by the CAP, further work
at the facility may be required prior to site closure consideration. The public notification process
has been successfully completed and there was not substantial public interest or other reason to
warrant a public meeting prior to CAP approval or implementation of the cleanup activities.

The CAP is approved and will consist of Surfactant Enhanced Remediation, In Situ
Activated Carbon, and Monitored Natural Attenuation. Additionally, following the completion of
additional site characterization as detailed in Section 5 of the CAP, Hill Air Force Base must submit
a Corrective Action Design and Construction Details report. The projected start date as indicated in
the public notification is April 2024. If this schedule has changed, please contact your project
manager with an updated implementation schedule.

Any modifications to the above CAP/conditions must be reviewed and approved by the
Division Director prior to their implementation. The local health department must be notified
72-hours before beginning corrective action activities.

Facility ID# 3000212
Page 2
Cleanup levels for this release have been established as Initial Screening Levels (ISLs) using
criteria outlined in Utah Admin. Code R311-211. These levels are expected to be protective of all
receptors within a critical distance at the site considering the current land use. It may be necessary
to re-evaluate the cleanup levels if additional information becomes available or if the land use
changes in the future.

CAP construction or implementation should begin within 30 days of your receipt of this
approval letter. If corrective action has not begun by October 31, 2024, a revised CAP must be
submitted for approval.

Please submit a corrective action report detailing the cleanup activities and any sample
results within 60 days after corrective action is complete. Once it has been adequately demonstrated
that contaminant concentrations are below the established cleanup levels, you may petition the
DERR for site closure. After reviewing this information, the DERR will determine if no further
action is warranted, or if additional work is needed.

If you have any questions, please contact Hillary Mason, the DERR project manager, at
[phone].

Sincerely,

Brent H. Everett, Director
Division of Environmental Response and Remediation

BHE/HLM/rr

cc: Brian E. Hatch, Director, Davis County Health Department
Jay Clark, Environmental Health Director, Davis County Health Department
Craig Barnitz, Environmental Scientist, Division of Environmental Response and Remediation
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Hill Air Force Base
ATTN : Lindsay Burt
7290 Weiner St., Bldg . #383
HAFB , UT 84056
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