WASHINGTON, Dec. 11 (TNSFR) -- The U.S. Environmental Protection Agency has issued a final rule approving a state implementation plan (SIP) revision from South Carolina, signaling satisfaction of Clean Air Act requirements for the regional haze program's second planning period.

This action focuses on the long-term strategy (LTS) to improve visibility in mandatory Class I Federal areas, addressing the national goal of preventing future, and remedying existing, air pollution impa . . .

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