Approval and Promulgation of Implementation Plans and Designation of Areas for Air Quality Planning Purposes; Kentucky; Redesignation of the Kentucky Portion of the Huntington-Ashland 1997 Annual Fine Particulate Matter Nonattainment Area to Attainment

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On February 12, 2012, the Commonwealth of Kentucky, through the Kentucky Energy and Environment Cabinet, Division for Air Quality (DAQ), submitted a request to redesignate the Kentucky portion of the tri-state Huntington-Ashland, West Virginia-Kentucky-Ohio fine particulate matter (PM 2.5 ) nonattainment area (hereafter referred to as the "Huntington-Ashland Area" or "Area") to attainment for the 1997 Annual PM 2.5 National Ambient Air Quality Standards (NAAQS) and to approve a State Implementation Plan (SIP) revision containing a maintenance plan for the Kentucky portion of the Huntington-Ashland Area. The Huntington-Ashland Area is comprised of Boyd County and a portion of Lawrence County in Kentucky; Lawrence and Scioto Counties and portions of Adams and Gallia Counties in Ohio; and Cabell and Wayne Counties and a portion of Mason County in West Virginia. EPA is proposing to approve the redesignation request and the related SIP revision for Boyd and Lawrence Counties in Kentucky, including the Commonwealth's plan for maintaining attainment of the PM 2.5 standard in the Kentucky portion of the Huntington-Ashland Area. EPA is also proposing to approve the on-road motor vehicle ins