Approval and Promulgation of Air Quality Implementation Plans; Illinois; 10-Year FESOP Amendments

The Environmental Protection Agency (EPA) is approving Illinois' rule revision to extend the term for an initial permit or renewal of a Federally Enforceable State Operating Permit (FESOP) from five years to ten years. Illinois submitted this rule revision for approval on January 9, 2014. FESOPs apply to non-major sources that obtain enforceable limits to avoid being subject to certain Clean Air Act (Act) requirements, including the Title V operating permit program. This revision meets the Federal requirements found in the June 28, 1989, rule addressing Federal enforceability of FESOPs. This rule revision is expected to reduce the administrative costs of the permitting process for both the affected sources and the Illinois Environmental Protection Agency (IEPA). It will also allow IEPA to devote more resources to major source Title V permitting actions and permit modifications for both Title V and FESOP sources.