


--------------------------------------------------------------------------------
 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
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REGION 8
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1595 Wynkoop Street
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Denver, CO   80202-1129
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Phone 800-227-8917
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www.epa.gov/region80




Ref:  8ARD-PM

Mr. Mike Natchees							
Air Quality Program Director
Ute Indian Tribe 
Energy and Minerals Department
P.O. Box 190
Fort Duchesne, Utah  84026-0070

Dear Mr. Natchees:

The U.S. Environmental Protection Agency Region 8 is proposing to issue a permit in accordance with the Tribal Minor New Source Review (MNSR) Permit Program at 40 CFR part 49, for the American Gilsonite Company, proposed installation of two 1,080 horsepower diesel-fired engines, one 536 horsepower diesel-fired engine and associated diesel fuel storage tanks (maximum capacity of 16,800 gallons) to the existing Cottonwood Mine facility, on Indian country lands within the Uintah and Ouray Indian Reservation. This permit would incorporate enforceable requirements for the surface installation and operation of air pollutant emitting equipment. The proposed facility is estimated to be a true minor source with respect to MNSR-regulated pollutants.  

A public comment period for the proposed permit will begin on September 23, 2020, and end on October 23, 2020. 

The enclosed proposed permit and supporting documentation are available in the electronic docket at regulations.gov (Docket ID #EPA-R08-OAR-2020-0149), and we ask that you please assist members of the public who contact you with instructions on how to access the material available for public review until the end of the public comment period. Comments may be submitted via mail, via email to R8AirPermitting@epa.gov, or through https://www.regulations.gov (Docket ID #EPA-R08-OAR-2020-0149). In addition, we have provided the bulletin board public notice announcement and would appreciate it if you could post this announcement in prominent locations in your area. All of these documents will also be available for review in electronic format on our website at: https://www.epa.gov/caa-permitting/caa-permit­ public-comment-opportunities-region-8. 
                                          







If you have any questions concerning the enclosed proposed permit or technical support documents, please contact Donald Law, of my staff, at (303) 312-7015.   
                                          
                                       Sincerely,
                                                
                                    Carl Daly
                                    Acting Director
                                    Air and Radiation Division
                                      
                                      
Enclosures

