NATIONAL PARKS CONSERVATION ASSOCIATION, SIERRA CLUB, ENVIRONMENTAL DEFENSE FUND, and CENTER FOR BIOLOGICAL DIVERSITY v. UNITED STATES ENVIRONMENTAL PROTECTION AGENCY, and MICHAEL S. REGAN

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Sierra Club, National Parks Conservation, the Environmental Defense Fund, and the Center for Biological Diversity sued the U.S. Environmental Protection Agency (EPA), alleging that the EPA has violated the Clean Air Act by failing to take legally required action to protect air quality in national parks and wilderness areas. Plaintiffs are seeking declaratory judgment and injunctive relief.

[To accompany Federal Case Law Update "Environmental Groups Sue EPA for Alleged Violations of the Clean Air Act in Wilderness Areas" from Brooks Animal Law Digest Issue No. 133.]