Approval and Promulgation of Air Quality Implementation Plans; Kentucky Update to Materials Incorporated by Reference

EPA is updating the materials submitted by Kentucky that are incorporated by reference (IBR) into the Kentucky State Implementation Plan (SIP). The regulations affected by this update have been previously submitted by the state agency and approved by EPA. In this document, EPA is updating the material being IBRed, modifying the IBR table format, and correcting erroneous dates. EPA is also revising the "EPA-Approved Kentucky Non-regulatory Provisions" table by removing provisions which are no longer in effect and provisions which were later revised and are listed elsewhere in the table. This table now lists the most current, approved non-regulatory provision rather than tracking the approval history of individual provisions. This update affects the SIP materials that are available for public inspection at the Office of the Federal Register (OFR), Office of Air and Radiation Docket and Information Center, and the Regional Office.