Air quality issues affecting national parks, forests, and public lands: joint oversight hearing before the Subcommittee on National Parks and Public Lands and the Subcommittee on General Oversight and California Desert Lands of the Committee on Interior and Insular Affairs, House of Representatives, One Hundred Second Congress, second session ... hearing held in Washington, DC, April 30, 1992, Volume 4
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April 30 1992
Wilderness Areas and National Parks of the Colorado Plateau
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1990 Amendments acid deposition acid rain acidification adverse impact Air Act Amendments air pollution air quality Amendments of 1990 aquatic ecosystems Chairman Lehman Chairman Vento Class I areas Clean Air Act Colorado Plateau Committee concern Congress Congressman dioxide emissions effects EPA's Fayad Federal Land Manager Forest Service Galloway going Grand Canyon hearing implementation increase industry Interior Kiernan levels Mountains National Park NAPAP National Park Service National Stream Survey National Wilderness Areas Navajo Generating Station nitrogen oxide NPS National offsets park protection park resources Parks and Public parks and wilderness percent power plants problem proposed protect park Public Lands reduction regional haze regulations S02 emissions sensitive Shenandoah National Park Sierra sources statement streams sampled Subcommittee sulfate concentrations sulfur dioxide surface waters Thank tion tional Park Visibility Transport Commission visual range VTSSS West western White House Wyden amendment Yuhnke