EPA has issued a final rule that requires 36 states to revise their State Implementation Plans to eliminate a well-known and often-used Clean Air Act defense for excess emissions. While specific elements of the defense...more
In response to a petition for final rule-making filed by the Sierra Club, the U.S. Environmental Protection Agency issued on May 22, 2015, its final action requiring 36 states to revise their state implementation plans...more
The U.S. Environmental Protection Agency (EPA) and the Sierra Club have entered into a proposed consent decree that would partially resolve a lawsuit brought by the Sierra Club against the agency. Notice of the proposed...more
The U.S. Environmental Protection Agency (EPA) issued a proposed rule on September 5, 2014 that would prevent states from including affirmative defenses in their Clean Air Act state implementation plans (SIPs) for emissions...more