EPA is proposing to promulgate a Reservation-specific Federal Implementation Plan in order to regulate emissions from oil and natural gas production facilities located on the Fort Berthold Indian Reservation located in North Dakota. The proposed Federal Implementation Plan includes basic air quality regulations for the protection of communities in and adjacent to the Fort Berthold Indian Reservation. The proposed Federal Implementation Plan requires owners and operators of oil and natural gas production facilities to reduce emissions of volatile organic compounds emanating from well completions, recompletions, and production and storage operations. This Federal Implementation Plan would be implemented by EPA, or a delegated Tribal Authority, until replaced by a Tribal Implementation Plan. EPA is issuing an interim final rule for a Reservation-specific Federal Implementation Plan, concurrently with this proposed rule, for a Reservation-specific Federal Implementation Plan and any additional information can be found within the interim final rule under the same title.