DAQ-2024-007958

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-372-24
Site ID 15746 (B1)

Lauren Brown
XCL AssetCo, LLC
600 North Shepard Drive, Suite 390
Houston, TX 77007-4580

Dear Ms. Brown,

Re: Compliance Advisory, No Further Action – XCL AssetCo, LLC – Butcher Butte Pad
31-134H-21, 31-64H-21, 31-114H-21, 31-144H-21 Duchesne County

On March 29, 2024, the Utah Division of Air Quality (DAQ) sent XCL AssetCo, LLC a
Compliance Advisory (DAQC-CA157460001-24) for potential violations of the Utah Air Quality
Rules. A written response to this Compliance Advisory was received on April 15, 2024. DAQ
recommends that no further action is required at this time. Please be aware that closure of this
Compliance Advisory does not constitute a bar to enforcement action for conditions found during
other inspections.

Thank you for your cooperation in resolving this matter. If you have any questions regarding this
letter, please contact me at [phone] or at [e-mail].

Sincerely,

Rik Ombach, Manager
Minor Source Oil and Gas Compliance Section

RO:SF:rh

cc: TriCounty Health Department

May 9, 2024