The Environmental Protection Agency (EPA) Administrator signed an Order dated September 15, 2020, denying a Petition dated August 5, 2016 from Sierra Club, Respiratory Health Association and Environmental Law and Policy Center. The Petition requested that EPA object to a Clean Air Act (CAA) title V operating permit issued by the Illinois Environmental Protection Agency (IEPA) to Midwest Generation for the Waukegan Generating Station located in Waukegan, Lake County, Illinois.