Marcus L. Nance v. Environmental Protection Agency, Northern Cheyenne Tribe, Intervenors. Thermal Energy, Inc. v. Environmental Protection Agency, Northern Cheyenne Tribe, Intervenors. Amax Coal Company v. Environmental Protection Agency, Northern Cheyenne Tribe, Intervenors. Crow Indian Tribe, Montana v. Environmental Protection Agency, Northern Cheyenne Tribe, Intervenor. Westmoreland Resources v. Environmental Protection Agency, Northern Cheyenne Tribe, Intervenor. Westmoreland Resources v. Environmental Protection Agency, Northern Cheyenne Tribe, Intervenor

645 F.2d 701 16 ERC 1497 , 11 Envtl. L. Rep. 20 ,526 Marcus L. NANCE et al., Petitioners, v. ENVIRONMENTAL PROTECTION AGENCY, Respondent. Northern Cheyenne Tribe et al., Intervenors. THERMAL ENERGY, INC. et al., Petitioners, v. ENVIRONMENTAL PROTECTION AGENCY, Respondent. Northern Cheyenne Tribe et al., Intervenors. AMAX COAL COMPANY, Petitioners, v. ENVIRONMENTAL PROTECTION AGENCY, Respondent. Northern Cheyenne Tribe et al., Intervenors. CROW INDIAN TRIBE, MONTANA, Petitioner, v. ENVIRONMENTAL PROTECTION AGENCY, Respondent. Northern Cheyenne Tribe, Intervenor. WESTMORELAND RESOURCES, Petitioner, v. ENVIRONMENTAL PROTECTION AGENCY, Respondent. Northern Cheyenne Tribe, Intervenor. WESTMORELAND RESOURCES, Petitioner, v. ENVIRONMENTAL PROTECTION AGENCY, Respondent. Northern Cheyenne Tribe, Intervenor. Nos. 77-3058, 77-3301, 77-3305, 77-3356, 77-3374 and 79-7261. United States Court of Appeals, Ninth Circuit. Argued March 4, 1980. Submitted April 24, 1981. Decided May 18, 1981. Bruce M. Brown, Brown & Huss, Miles City, Mont., on brief, for Nance. Jack L. Smith, Denver, Colo., on brief, for Thermal Energy, Inc. Gary L. Green, Dwason, Nagel, Sherman & Howard, Denver, Colo., on…