Environmentalists sue over EPA failure to implement SO2 limit

The Center for Biological Diversity (CBD) and Sierra Club are urging a federal district court to find that EPA violated the Clean Air Act when it failed to implement its 2010 federal air quality standards for sulfur dioxide (SO2) in nine states and two territories, calling for a mandatory injunction requiring the agency to take action. The groups filed a March 28 complaint to the U.S. District Court of the Northern District of California regarding EPA’s failure to ensure that...