The Environmental Protection Agency (EPA) is finalizing approval of revisions to the Jefferson County portion of the Kentucky State Implementation Plan (SIP), submitted by the Commonwealth of Kentucky, through the Energy and Environment Cabinet (Cabinet), through a letter dated March 15, 2018. The revisions were submitted by the Cabinet on behalf of the Louisville Metro Air Pollution Control District (District, also referred to herein as Jefferson County) and make minor ministerial amendments to applicability dates and standards for both existing and new storage vessels for volatile organic compounds (VOC). EPA is finalizing approval of the changes because they are consistent with the Clean Air Act (CAA or Act).