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Federal court rejects suit that would have cut haze in NPs in Wyoming, South Dakota, Utah

DENVER (CN) — The Clean Air Act gives Wyoming wide discretion in designing plans to retrofit small coal-powered plants in efforts to reduce regional haze, the 10th Circuit found in an order published Tuesday that rejected separate critiques filed by the U.S. Environmental Protection Agency and several conservation groups.

Vast swaths of Wyoming are protected as national parks, including Grand Teton and Yellowstone, which sit adjacent to haze-producing coal-powered plants. As mandated by the Clear Air Act, the EPA implemented the 1999 Regional Haze Rule and the 2001 Best Available Retrofit Technology (BART) guidelines directing states to clean up the air, particularly around national parks.

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