WASHINGTON, July 23 -- Environmental Protection Agency has issued a notice called: Clean Air Act Operating Permit Program; Order on Petition for Objection to State Operating Permit for the Copperstone Gold Mine.
The notice was published in the Federal Register on July 23 by Anita Lee, Director, Air and Radiation Division, Region IX.
Summary: The Environmental Protection Agency (EPA) Administrator signed an order dated June 23, 2026, denying a petition dated June 6, 2025, from the Center for Biological Diversity. The petition requested that the EPA object to a Clean Air Act (CAA) title V operating permit issued by the Arizona Department of Environmental Quality (ADEQ) to Bonanza Explorations, Inc, for Copperstone Gold Mine, an underground ...