Air Plan Approval; Ohio; Removal of Gasoline Volatility Requirements in the Cincinnati and Dayton Areas; Update on the Boutique Fuel List for Illinois and Ohio

The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision submitted by the Ohio Environmental Protection Agency (Ohio EPA) on December 19, 2016, concerning the state's gasoline volatility standards in the Cincinnati and Dayton areas. The revision removes the 7.8 pounds per square inch (psi) low Reid Vapor Pressure (RVP) fuel requirements for the two areas as a component of the Ohio ozone SIP. The submittal also includes a section 110(l) demonstration as required by the Clean Air Act (CAA) that addresses emissions impacts associated with the removal of the program. EPA proposed to approve the state's submittal on February 15, 2017.