



--------------------------------------------------------------------------------
 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 							
Director, Air Quality Department
Energy and Minerals Department 
Ute Indian Tribe
P.O. Box 70
Fort Duchesne, Utah  84026

Dear Mr. Natchees:

The U.S. Environmental Protection Agency Region 8 is proposing to issue a synthetic minor permit for the Crescent Point Energy (CP) Ute Tribal 20-02 Compressor Station on the Uintah and Ouray Indian Reservation.  As requested by CP, this permit does not authorize the construction of any new emission sources, or emission increases from existing units, nor does it otherwise authorize any other physical modifications to the facility or its operations. This permit is only intended to incorporate requested enforceable emission restrictions for an existing installed and operating emissions unit and associated voluntarily installed and operated control device. CP requested legally and practically enforceable requirements for the installation and operation of an enclosed combustor to control the volatile organic compounds (VOCs) and hazardous air pollutants (HAPs) emissions from a triethylene glycol (TEG) dehydrator still vent. The EPA held a public comment period from July 16, 2018 to August 15, 2018. However, following the close of the comment period, the EPA determined it was necessary to revise the proposed permit to ensure that sufficient legally and practicably enforceable emissions limitations have been included to establish the source as a synthetic minor source for HAPs and VOCs. In particular, this permit has been revised to include benzene emissions limits, consecutive 12-month emissions calculation requirements, and more stringent recordkeeping requirements. Because of these new revisions, the EPA is providing a second comment period regarding only these permit changes, which are in Condition C (Requirements for the TEG Dehydrator).

A public comment period for the proposed permit will begin on June 25, 2019, and end on July 25, 2019. 

We have enclosed a paper copy containing the proposed permit and supporting documentation, and we ask that you please make this material available for public review until the end of the public comment period. Comments may be submitted by mail, via email to R8AirPermitting@epa.gov, or through regulations.gov (Docket ID # EPA-R08-OAR-2018-0335). In addition, we have provided copies of the bulletin board public notice announcement and would appreciate it if you would 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.






Thank you for your assistance in this matter. Should you have any questions regarding this permit action please contact Colin Schwartz, of my staff, at (303) 312-6043. 
							
                                    Sincerely,   
                                                                                 
                                    
                                      Carl Daly
                                      Acting Director
                                      Air and Radiation Division
                                      
Enclosures


