The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision submitted by the State of Tennessee, through the Tennessee Department of Environment and Conservation (TDEC), on September 25, 2013. The SIP submittal includes a change to the TDEC regulation "Logs and Reports." EPA is approving this SIP revision because it is consistent with the Clean Air Act (CAA or Act) and federal regulations governing SIPs.