DAQ-2024-010862

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-985-24
Site 10571 (B4)

Sean Daly
Kennecott Utah Copper
4700 Daybreak Parkway
South Jordan, UT 84009

Dear Mr. Daly:

Re: Kennecott Utah Copper – Bingham Canyon Mine – In-Pit Crusher Baghouse (M3/M4) and
Transfer Point Baghouse (C6/C8) – Protocol Review and Test Date Confirmation – Salt Lake
County, Utah

The testing protocol for the Kennecott Utah Copper Mine In-Pit Crusher Baghouse (M3/M4) and
Transfer Point Baghouse (C6/C8) dated September 12, 2024, has been reviewed and found
acceptable. The agreed upon test date is October 15-17, 2024.

Acceptance of a protocol does not relieve the owner/operator and the testing contractor from strict
adherence to all applicable EPA methods, 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.

1 , " / á Û Ù Û Ý
DAQC-985-24
Page 2

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

Sincerely,

Connor Kijowski, Environmental Scientist
Division of Air Quality

CK:rh

cc: Salt Lake County Health Department