Approval and Promulgation of Implementation Plans Kentucky: 1-Hour Ozone Maintenance Plan Update for Lexington Area

Today's action consists of three distinct but related final rulemakings briefly characterized here and further discussed in the supplementary information section of this rule. First, EPA is finalizing approval of the Lexington portion of a revision to the state implementation plan (SIP) of the Commonwealth of Kentucky submitted on February 19, 2004 in draft form, and in final form on August 24, 2004. The SIP revision provides the 10-year update to the original 1-hour ozone maintenance plans for five 1-hour maintenance areas, including the Lexington Maintenance Area, and also provides revised 2004 motor vehicle emission budgets (MVEBs) and establishes 2015 MVEBs. The Lexington Maintenance Area is composed of Fayette County, Kentucky and Scott County, Kentucky. Secondly, through this action, EPA is providing notification of its determination that the Lexington portion of the Commonwealth's SIP revision satisfies the requirements of the Clean Air Act (CAA) for the 10-year update to the 1-hour ozone maintenance plan for the Lexington Maintenance Area. Thirdly, through this action, EPA is providing information on the status of its transportation conformity adequacy determination for the new MVEBs for the year 2015 that are contained in the 10-year update to the 1-hour ozone maintenance plan for the Lexington Maintenance Area.