Approval and Promulgation of Implementation Plans; Commonwealth of Kentucky: New Source Review for Fine Particulate Matter

The Environmental Protection Agency (EPA) is taking final action to approve a revision to the Kentucky State Implementation Plan (SIP), submitted by the Commonwealth of Kentucky, through the Kentucky Division for Air Quality (KDAQ) to EPA on January 31, 2013. The SIP revision modifies the Commonwealth's New Source Review (NSR), Prevention of Significant Deterioration (PSD), and Nonattainment New Source Review (NNSR) regulations to adopt into the Kentucky SIP Federal NSR permitting requirements for the implementation of the fine particulate matter (PM<INF>2.5</INF>) national ambient air quality standards (NAAQS). The approved changes in Kentucky's January 31, 2013, SIP submission are necessary to comply with Federal requirements. EPA is approving the Commonwealth's January 31, 2013, revision to the Kentucky SIP because the Agency has determined that the changes are consistent with the Clean Air Act (CAA or Act). Additionally, EPA is converting two conditional approvals related to the PSD infrastructure requirements for the 1997 and 2006 PM<INF>2.5</INF>, and 2008 8-hour Ozone NAAQS to full approval under the CAA.