Air Plan Approval; Ohio; Regional Haze Five-Year Progress Report State Implementation Plan

The Environmental Protection Agency (EPA) is proposing approval of a revision to the Ohio State Implementation Plan (SIP) submitted by the State of Ohio (Ohio) through the Ohio Environmental Protection Agency (OEPA). Ohio's SIP revision addresses the requirements of the Clean Air Act (CAA) and EPA's rules that require states to submit periodic reports describing progress towards reasonable progress goals (RPGs) established for regional haze, and a determination of the adequacy of the state's existing implementation plan addressing regional haze (regional haze SIP). EPA is proposing approval of the Ohio SIP revision on the basis that it addresses the progress report and adequacy determination requirements for the first implementation period for regional haze.