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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:  8P-AR

Mr. Edmund Baker 							
Environmental Director
404 Frontage Road
New Town, North Dakota  58763

Dear Mr. Baker:

The U.S. Environmental Protection Agency Region 8 is proposing to issue a synthetic minor permit for the MCP Operating, LLC (MCP), FBIR Compressor Station on the Fort Berthold Indian Reservation. This proposed permit would establish facility-wide annual limits on the throughput of natural gas and condensate. It requires the installation, maintenance and operation of a process flare to control volatile organic compounds (VOC) and hazardous air pollutants (HAP) emissions from natural gas handling during maintenance, startup, shutdown and upset conditions. It also requires the installation, maintenance and operation of an enclosed vapor combustor to control VOC and HAP emissions from a triethylene glycol (TEG) dehydration unit that includes a TEG reboiler and benzene, toluene, ethylbenzene and xylene (BTEX) condenser, and working, standing, breathing and flashing loss emissions from condensate storage tanks. The proposed permit also contains requirements to operate a catalytic control system and air-to-fuel ratio (AFR) controller on three (3) natural gas-fired 4-stroke lean-burn (4SLB) spark ignition (SI) internal combustion engines (ICE) used for natural gas compression at the facility, including associated carbon monoxide (CO), VOC and nitrogen oxides (NOx) emissions limits. This permit would establish the requested enforceable requirements for CO, NOx, VOC and HAP emissions controls and other operational limitations, as well as associated monitoring, recordkeeping and reporting. 

A public comment period for the proposed permit will begin on November 7, 2018, and end on December 7, 2018. 

We have enclosed hard copies of 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 via mail, via email to R8AirPermitting@epa.gov, or through https://www.regulations.gov (Docket ID # EPA-R08-OAR-2018-0574). In addition, we have provided copies of 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 document, please contact Colin Schwartz, of my staff, at (303) 312-6043.   

						Sincerely,
                                    
						Monica Mathews-Morales
                              Director, Air Program
                                    Office of Partnerships and Regulatory Assistance

Enclosures


