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 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/region8

Ref:  8ARD-PM

Mr. Mike Natchees
Director							
Air Quality Program 
Ute Indian Tribe 
P.O. Box 70
Fort Duchesne, Utah  84026

Re:	Table Rock Minerals, LLC, Gilsonite Mine, Permit # TMNSR-UO-007057-2021.002, Proposed True Minor New Source Review Permit

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 Table Rock Minerals LLC's proposed modification involving the construction of a new generator engine and pneumatic conveyance at a gilsonite mining operation, on Indian country lands within the Uintah and Ouray Indian Reservation. The proposed project is estimated to be a true minor source with respect to MNSR regulated pollutants. The proposed permit would revise the current effective permit issued in 2017 and would contain production and operating hours limits and emission control efficiency requirements, and associated monitoring, recordkeeping and reporting requirements for the mine and/or certain pollutant emission-generating units or activities approved for construction and installation.

A public comment period for the proposed permit will begin on August 10, 2021, and end on September 9, 2021. 

Due to the COVID-19 pandemic, online electronic copies of the draft permit, technical support document and supporting materials may be viewed at: http://www.epa.gov/caa-permitting/caa-permit-public-comment-opportunities-region-8. The proposed permit and supporting documentation are also available in the electronic docket at regulations.gov (Docket ID # EPA-R08-OAR-2021-0239). 

Please submit any written recommendations you may have concerning the terms and conditions of the draft permit to Colin Schwartz, of my staff, at schwartz.colin@epa.gov. Comments may also be submitted via email to R8AirPermitting@epa.gov, or through regulations.gov (Docket ID # EPA-R08-OAR-2020-0134).










If you have any questions concerning the proposed permit or technical support document, please contact Colin Schwartz, of my staff, at (303) 312-6043 or at schwarz.colin@epa.gov.  
                                          
                                       Sincerely,
                                                
                                      Carl Daly
                                      Acting Director
                                      Air and Radiation Division
                                      

