DAQ-2024-007465

195 North 1950 West • Salt Lake City, UT
Mailing Address: P.O. Box 144820 • Salt Lake City, UT 84114-4820
Telephone [phone] • Fax [phone] • T.D.D. [phone]
www.deq.utah.gov
Printed on 100% recycled paper
State of Utah

Department of
Environmental Quality

Kimberly D. Shelley
Executive Director

DIVISION OF AIR QUALITY
Bryce C. Bird
Director

SPENCER J. COX
Governor

DEIDRE HENDERSON
Lieutenant Governor
DAQC-116-24
Site ID: 101763 (B4)

Lauren Brown
XCL Resources
600 North Shepherd Drive, Suite 390
Houston, TX 77007

Re: XCL Resources – Denning #29-4A-23 – Protocol Review and Test Date Confirmation –
Duchesne County

Dear Ms. Brown:

The testing protocol for one (1) Caterpillar G3508 and one (1) Waukesha 5794GSI at the Denning
#29-4A-23 production facility in Duchesne County, Utah, dated February 7, 2024, has been
reviewed and found acceptable. The agreed upon test date is March 11, 2024.

Acceptance of a protocol does not relieve the owner/operator and the testing contractor from strict
adherence to all applicable EPA methods, Utah Division of Air Quality (DAQ) policies, Utah Air
Quality Rules (UAQR), and methods approved by the director. Any deviation from EPA methods,
DAQ policies, UAQR, and methods approved by the director must be addressed separately and
express written consent given prior to commencement of testing.

The DAQ requires that all test reports include a statement that:

A. Testing was conducted while the source was operating at the rate and/or conditions
specified in the applicable approval order, operating permit, or federal regulation.

B. During testing, the source combusted fuels, used raw materials, and maintained
process conditions representative of normal operations, and operated under such
other relevant conditions specified by the director.

C. Based on information and belief formed after reasonable inquiry, the statements
and information contained in the report are true, accurate, and complete.

" / 2 / 6 â Û Ù Û Ý
DAQC-116-24
Page 2

If you have any questions, call me at [phone] or e-mail me at [e-mail].

Sincerely,

Kyle Greenberg, Environmental Scientist
Division of Air Quality

KG:rh

cc: TriCounty Health Department

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