DAQ-2025-003218

195 North 1950 West • Salt Lake City, Utah
Mailing Address: P.O. Box 144820 • Salt Lake City, Utah 84114-4820
Telephone [phone] • Fax [phone] • T.D.D. 800 346-3128
www.deq.utah.gov
Printed on 100% recycled paper
State of Utah

Department of
Environmental Quality

Tim Davis
Executive Director

DIVISION OF AIR QUALITY
Bryce C. Bird
Director

SPENCER J. COX
Governor

DEIDRE HENDERSON
Lieutenant Governor
DAQC-648-25
Site ID 14210 (B4)

Jeanette Liang
FourPoint Resources, LLC
100 Street Paul Street, Suite. 400
Denver, Colorado 80206

Dear Ms. Liang:

Re: FourPoint Resources, LLC – Pleasant Valley Compressor Station/Compressor
Engines #1-5 – Protocol Review and Test Date Confirmation – Duchesne County

The testing protocol for Compressor Engine Units #1-5 at the Pleasant Valley Compressor Station
in Duchesne County, Utah dated September 28, 2023, has been reviewed and found acceptable.
The agreed upon test date is the week of October 30, 2023.

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.

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DAQ-648-25
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:aj

cc: TriCounty Health Department

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