WASHINGTON, Jan. 24 (TNSFR) -- The U.S. Environmental Protection Agency announced its final approval of Indiana's plan to improve air quality and visibility in national parks and wilderness areas. The decision confirms that the Indiana Department of Environmental Management (IDEM) has met federal requirements to reduce the atmospheric haze that obscures scenic views in protected federal lands.

The approval covers the second implementation period of the Regional Haze Rule, a pro . . .

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