The Environmental Protection Agency (EPA) is taking final action to approve the state implementation plan (SIP) revision submitted by the Commonwealth of Kentucky, through the Kentucky Division of Air Quality (DAQ) on November 18, 2015, to address the emissions statements requirement for the Commonwealth's portion of the Cincinnati, Ohio-Kentucky-Indiana (Cincinnati, OH-KY- IN) 2008 8-hour ozone national ambient air quality standards (NAAQS) nonattainment area (hereafter referred to as the ``Cincinnati, OH-KY-IN Area'' or ``Area''). Annual emissions reporting (i.e., emissions statements) is required for all ozone nonattainment areas. The Area is comprised of Butler, Clermont, Clinton, Hamilton and Warren Counties in Ohio; portions of Boone, Campbell, and Kenton Counties in Kentucky; and a portion of Dearborn County in Indiana. Any actions that EPA takes regarding the emissions statements requirements for the Ohio and Indiana portions of this Area will be addressed in separate rulemakings.