Approval and Promulgation of Implementation Plans; State of Washington; Revised Format for Materials Incorporated by Reference

EPA is revising the format for materials submitted by the State of Washington that are incorporated by reference (IBR) into the Washington State Implementation Plan (SIP). The regulations affected by this format change have all been previously submitted by the State of Washington and approved by EPA. This format revision will primarily affect the "Identification of plan" section, as well as the format of the SIP materials that will be available for public inspection at the National Archives and Records Administration (NARA), the Air and Radiation Docket and Information Center located at EPA Headquarters in Washington, DC, and the EPA Regional Office. EPA is also adding a table in the "Identification of plan" section which summarizes the approval actions that EPA has taken on the non-regulatory and quasi-regulatory portions of the Washington SIP.