Approval and Promulgation of Implementation Plans Tennessee: Approval of Revisions to the Tennessee SIP and the Nashville/Davidson County Portion of the Tennessee SIP Regarding Nitrogen Oxides

In this document, EPA is acting on revisions to the Tennessee State Implementation Plan (SIP) submitted to EPA by Tennessee, through the Tennessee Department of Air Pollution Control (TDAPC) which add a new chapter to the Nashville/Davidson County and the State portion of the Tennessee SIP for the control of nitrogen oxide (NO<INF>X) emissions. Only the portions of the Tennessee NO<INF>X rule necessary for the approval of Tennessee's ozone redesignation request are being approved in this notice. EPA is granting an exemption to the area under 182(f) of the Clean Air Act (CAA) from NO<INF>X Reasonably Available Control Technology (RACT) requirements in a separate action. The only sources which will be subject to this rule are tangentially-fired coal burning boilers which have a heat input capacity in excess of 600 million BTU per hour in the five county Nashville ozone nonattainment area.