Clean Air Protection Problems at National Parks and Wilderness Areas: Hearing Before the Environment, Energy, and Natural Resources Subcommittee of the Committee on Government Operations, House of Representatives, One Hundred Third Congress, Second Session, April 29, 1994
United States. Congress. House. Committee on Government Operations. Environment, Energy, and Natural Resources Subcommittee
U.S. Government Printing Office, 1995 - Air - 212 pages
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acid rain Administrator adverse impact determination agencies Air Act Amendments air pollution air quality related airport Appalachian Mountain appeal assessment BACKIEL Canyon Visibility Transport Chairman CHRISTIANO class I areas Clean Air Act Colorado Plateau Commission's Committee contribute control technology develop East ecosystems effects efforts Environmental EPA's establish existing sources Federal land managers Forest Service FRAMPTON funding Grand Canyon Visibility HADDOW impairment in class implementation improve visibility issue kilometers levels Michaels models National Park Service national visibility goal Natural Resources Navajo Generating Station NICHOLS nitrogen oxides offsets ozone P.O. Box parks and wilderness percent permit applications power plants protect visibility PSD program quality related values recommendations regional haze regulations regulatory require SAMI SHAVER Shenandoah National Park SOUBY source review STEINHARDT strategy subcommittee sulfate sulfur dioxide SYNAR testimony U.S. Forest Service Virginia visibility impairment visibility monitoring visibility protection Visibility Transport Commission wilderness areas Zirkel Wilderness