The Environmental Protection Agency (EPA) is approving a request submitted by the Ohio Environmental Protection Agency (Ohio EPA) on February 5, 2018, to revise the Ohio State Implementation Plan (SIP) under the Clean Air Act (CAA). Ohio EPA requested to remove from the SIP the remaining provisions of the Ohio Administrative Code (OAC) concerning the State's 7.8 pounds per square inch (psi) Reid vapor pressure (RVP) fuel requirements for the Cincinnati and Dayton areas. EPA proposed to approve this request in a notice of proposed rulemaking (NPRM) dated December 26, 2018. In a previous action, EPA approved the removal of the 7.8 psi RVP fuel applicability requirements in the Cincinnati and Dayton areas as a component of the Ohio SIP, including the approval of a demonstration under section 110(l) of the CAA that addressed emissions impacts associated with the removal of the program.