Environmentalists sue EPA over MATS coal waste air rule

Environmental groups are suing EPA over a rule relaxing air emissions for power plants burning coal waste in order to make it easier for the facilities to comply with the Obama-era utility mercury and air toxics standards (MATS), at the same time as environmentalists and others are challenging the agency’s MATS rollback rule. Citizens for Pennsylvania’s Future, Environmental Integrity Project and Sierra Club filed suit June 15 in the U.S. Court of Appeals for the District of Columbia Circuit, in...