DAQ-2025-001759

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. 800 346-3128
www.deq.utah.gov
Printed on 100% recycled paper
State of Utah

Department of
Environmental Quality

Tim Davis
Interim Executive Director

DIVISION OF AIR QUALITY
Bryce C. Bird
Director

SPENCER J. COX
Governor

DEIDRE HENDERSON
Lieutenant Governor
DAQC-306-25
Site ID 10645 (B4)

Chris Rose
Staker Parson Companies
89 West 13490 South, Suite 100
Draper, UT 84020-7209

Dear Mr. Rose:

Re: Staker Parson Companies dba Hales Sand and Gravel, Incorporated – Centerfield Asphalt
Plant – Protocol Review and Test Date Confirmation – Sanpete County

The testing protocol for the Barber Greene DM-70 Hot Mix Asphalt Plant at the Centerfield
Asphalt Plant in Sanpete County, UT, dated March 14, 2025, has been reviewed and found
acceptable. The agreed upon test date is May 6, 2025.

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 stating 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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DAQC-306-25
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:jl

cc: Central Utah Public Health Department
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