Clean Air Act Operating Permit Program; Petition for Objection to State Operating Permit for ExxonMobil Corporation, Harris County, Texas

Official abstract: The Environmental Protection Agency (EPA) Administrator signed an Order dated May 27, 2026, denying a petition dated November 12, 2025, from the Harris County Attorney's Office (the Petitioner). The petition requested that the EPA object to a Clean Air Act (CAA) title V operating permit issued by the Texas Commission on Environmental Quality (TCEQ) to the ExxonMobil Corporation, for its Baytown Olefins Plant located in Harris County, Texas.