Approval and Promulgation of Air Quality Implementation Plans; The Commonwealth of KentuckyDisapproval of the Request to Redesignate the Kentucky Portion of the Cincinnati-Northern Kentucky Moderate Ozone Nonattainment Area to Attainment and the Associated Maintenance Plan

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EPA is disapproving the Commonwealth of Kentucky Natural Resources and Environmental Protection Cabinet's (Cabinet) request to redesignate the Kentucky portion of the Cincinnati-Northern Kentucky moderate ozone nonattainment area to attainment and the associated maintenance plan as a revision to the state implementation plan (SIP). The EPA determined that the area registered a violation of the ozone national ambient air quality standard (NAAQS). As a result, the Cincinnati-Northern Kentucky area no longer meets the statutory criteria for redesignation to attainment of the ozone NAAQS.