The Environmental Protection Agency (EPA) is approving revisions to the Jefferson County portion of the Kentucky State Implementation Plan (SIP), submitted by the Commonwealth of Kentucky (Commonwealth), through the Energy and Environment Cabinet (Cabinet) on September 5, 2019. The revisions were submitted by the Cabinet on behalf of the Louisville Metro Air Pollution Control District and make a singular change to two regulations for clarity purposes regarding the applicability of exempt surface coating standards for existing and new miscellaneous metal parts and products operations. EPA is approving the change to both regulations as it is consistent with the Clean Air Act (CAA or Act).