Approval and Promulgation of Implementation Plans and Designation of Areas for Air Quality Planning Purposes; Commonwealth of Kentucky

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On November 13, 1992, the Commonwealth of Kentucky through the Natural Resources and Environmental Protection Cabinet (Cabinet), submitted a maintenance plan and a request to redesignate the Lexington, Owensboro, Paducah, and Edmonson County areas from nonattainment to attainment for ozone (O 3). Under the Clean Air Act (CAA), designations can be changed if sufficient data are available to warrant such changes and the redesignation request satisfies the criteria set forth in the CAA. In this action, EPA is approving the redesignation to attainment of the Lexington area (Fayette and Scott counties) and the associated maintenance plan because it meets the maintenance plan and redesignation requirements. EPA has approved the requests to redesignate to attainment and maintenance plans for the Owensboro, Edmonson County and Paducah areas. In this action, EPA is also approving the 1990 base year inventory for the Lexington marginal O 3 nonattainment area.