Approval and Promulgation of Implementation Plans; Tennessee: Approval of Revisions To the Knox County Portion of the Tennessee State Implementation Plan

EPA is taking direct final action to approve multiple revisions to the Tennessee State Implementation Plan (SIP) submitted by the State of Tennessee, through the Tennessee Department of Environment and Conservation (TDEC), on March 16, 2000, July 23, 2002, December 10, 2004, and January 31, 2006. The revisions pertain to the Knox County portion of the Tennessee SIP and include changes to Knox County Air Quality Regulations (KCAQR) Section 16.0--"Open Burning," Section 25.0--"Permits," and Section 46.0--"Regulation of Volatile Organic Compounds." These revisions are part of Knox County's strategy to attain and maintain the national ambient air quality standards (NAAQS). Today's action is being taken pursuant to section 110 of the Clean Air Act (CAA).