Approval and Promulgation of Implementation Plans; Kentucky; Approval of Revisions to the Jefferson County Portion of the Kentucky SIP; Emissions During Startups, Shutdowns, and Malfunctions

The Environmental Protection Agency (EPA) is taking final action to approve part of a revision to the Kentucky State Implementation Plan (SIP), submitted by the Commonwealth of Kentucky, through the Kentucky Division for Air Quality (KDAQ), on March 22, 2011. The proposed revision was submitted by KDAQ on behalf of the Louisville Metro Air Pollution Control District (District), which has jurisdiction over Jefferson County, Kentucky. The portion of the revision that EPA is approving modifies the Regulation entitled "Emissions During Startups, Shutdowns, Malfunctions and Emergencies" in the Jefferson County portion of the Kentucky SIP. EPA is approving this portion of the March 22, 2011, SIP revision because the Agency has determined that it is in accordance with the requirements for SIP provisions under the Clean Air Act (CAA or Act). EPA will act on the other portions of KDAQ's March 22, 2011, submittal, which are severable and unrelated, in a separate action. EPA is also responding to comments received on its May 21, 2013, proposed rulemaking.