Air Plan Approval; Kentucky; Revisions to Louisville; Definitions

On August 29, 2012, the Commonwealth of Kentucky, through the Kentucky Division for Air Quality (KDAQ), submitted changes to the Kentucky State Implementation Plan (SIP) on behalf of the Louisville Metro Air Pollution Control District (District). The Environmental Protection Agency (EPA) is taking direct final action to approve a portion of the submission that modifies the District's air quality regulations as incorporated into the SIP. Specifically, the revision pertains to definitional changes, including the modification of the definition of ``volatile organic compounds'' (VOCs). EPA is taking direct final action to approve this portion of the SIP revision because the Commonwealth has demonstrated that these changes are consistent with the Clean Air Act (CAA or Act). EPA will act on the other portion of KDAQ's August 29, 2012, submittal in a separate action.