Court of Appeals for the Ninth Circuit May 18, 1981, Nos. 77-3058, 77-3301, 77-3305, 77-3356, 77-3374 and 79-7261 (Nance v. Environmental Protection Agency)

lead-opinion

NELSON, Circuit Judge:

In this case, petitioners challenge the approval by the Environmental Protection Agency (EPA) of the Northern Cheyenne Tribe’s redesignation of its reservation from Class II to Class I air quality standards. The major issue presented can be rather simply described.