CFR›Title 40›Chapter I›Part 49›Subpart K›Subject Group Implementation Plan for the Northern Cheyenne Tribe ContainsSections 49.4200–49.5510CorpusDaily eCFRDisplayed edition2026-04-27Last updated2026-04-27 Sections 49.4200 § 49.4200 Identification of plan. 49.4201-49.5510 §§ 49.4201-49.5510 [Reserved] Previous Federal Implementation Plan for Oil and Natural Gas Well Production Facilities; Fort Berthold Indian Reservation (Mandan, Hidatsa and Arikara Nation), North Dakota Federal Implementation Plan for Oil and Natural Gas Well Production Facilities; Fort Berthold Indian Reservation (Mandan, Hidatsa and Arikara Nation), North Dakota