CBD sues to force EPA decision on Arizona PM limits

Environmental groups are suing to force EPA to determine if parts of Arizona are meeting federal air quality standards for fine particulate matter (PM2.5), arguing the agency has unlawfully neglected to make such a determination. In a lawsuit filed March 26 in the U.S. District Court for the Northern District of California, the Center for Biological Diversity (CBD) and the Center for Environmental Health say EPA has missed a June 2018 Clean Air Act deadline to determine whether the West...