DERR-2025-002552

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. 800 346-3128
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
Interim Executive Director

DIVISION OF ENVIRONMENTAL
RESPONSE AND REMEDIATION

Brent H. Everett
Director
ERRL-0135-25
April 8, 2025
CERTIFIED MAIL
RETURN RECEIPT REQUESTED
Heather Frost
Signature Aviation
13485 Veterans Way, Suite 600
Orlando, Florida 32827

Re: Subsurface Investigation Requirements
Signature Aviation, located at Provo Municipal Airport, Provo, Utah
Facility Identification No. 1000007, Release Site OMF

Dear Ms. Frost:

A release of petroleum from a petroleum storage tank (PST) at the above-referenced site
was reported on December 18, 2024, to the Division of Environmental Response and Remediation
(DERR) based on a tank refueling error where Jet A fuel overflowed the tank. According to Utah
Administrative Code R311-202, you are required to report, control, abate, and characterize the
release by defining the extent and degree of petroleum contamination and remediate (clean up) the
release. These regulations require that you prepare specific reports addressing the release and submit
them to the DERR within specified time frames following the release.

The DERR project manager has reviewed the release report information and follow-up
confirmation sampling data, and additional investigation is required. The project manager relied on
the information provided to the DERR and did not investigate the facility independently. The
investigation's intent is to define the extent and degree of subsurface petroleum contamination and
evaluate the potential risks to human health and the environment. Sampling, abatement, and cleanup
activities must be performed by a Utah Certified PST Consultant or Sampler as outlined by Utah
Admin. Code R311-201-2(a). A Subsurface Investigation Report (SIR) outlining the results of the
investigation must be submitted to the DERR within 60 days of your receipt of this letter.

Requirements for an SIR can be found on our website: https://deq.utah.gov/environmental-
response-and-remediation/guidance-documents-references-lust-program.

Facility ID# 1000007
Page 2
The DERR project manager will evaluate the SIR findings to determine whether a
No Further Action (closeout) recommendation can be made or if additional work is necessary.
This additional work may include investigation, cleanup, monitoring, and/or risk assessment.
Section 19-6-420(10)(a) of the Underground Storage Tank Act allows the DERR to recover
certain expenses incurred for petroleum releases not covered by the PST Fund. The DERR’s
expenses for managing and overseeing the abatement, investigation or corrective action are billed
quarterly to the responsible party. The Utah Legislature sets rates for oversight and review, currently
$125.00 per hour. Payment will be due within 30 days from the billing. Certain factors may be
considered by the Division Director when determining whether to recover these management and
oversight costs. If the responsible party can demonstrate an inability to pay, the Division Director
may grant an exemption from paying these expenses. You may contact us to request an application
for exemption if needed.
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/HM/rr
cc: Jason Garrett, Environmental Health Director, Utah County Health Department
Jeff DeMille, General Manager, Signature Aviation
Chris Nolan, P.G., Wasatch Environmental, Inc.
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U.S. Postal Service™
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Signatu re Aviation
ATTN: Heather Frost
13485 Veterans Way , Ste . "#600
Orlando , FL 32827
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