Approval and Promulgation of Implementation Plans for Kentucky - Air Permit Regulations (US Environmental Protection Agency Regulation) (EPA) (2018 Edition) The Law Library presents the complete text of the Approval and Promulgation of Implementation Plans for Kentucky - Air Permit Regulations (US Environmental Protection Agency Regulation) (EPA) (2018 Edition). Updated as of May 29, 2018 EPA is revising the format of materials submitted by the state of Michigan that are incorporated by reference (IBR) into its State Implementation Plan (SIP). The regulations affected by this format change have all been previously submitted by Michigan and approved by EPA. This book contains: - The complete text of the Approval and Promulgation of Implementation Plans for Kentucky - Air Permit Regulations (US Environmental Protection Agency Regulation) (EPA) (2018 Edition) - A table of contents with the page number of each section