Approval and Promulgation of Implementation Plans; State of Tennessee: Prevention of Significant Deterioration and Nonattainment New Source Review Rules: Nitrogen Oxides as a Precursor to Ozone

EPA is taking final action to approve changes to the Tennessee State Implementation Plan (SIP), submitted by the Tennessee Department of Environment and Conservation (TDEC), through the Division of Air Pollution Control, to EPA on May 28, 2009. The SIP revision modifies Tennessee's New Source Review (NSR) Prevention of Significant Deterioration (PSD) and Nonattainment New Source Review (NNSR) programs. The SIP revision addresses three related issues. First, the SIP revision updates Tennessee's SIP-approved regulations to incorporate NSR permitting requirements promulgated in the 1997 8-Hour Ozone national ambient air quality standards (NAAQS) Implementation Rule NSR Update Phase II (hereafter referred to as the "Ozone Implementation NSR Update" or "Phase II Rule"). Second, Tennessee's May 28, 2009, SIP revision updates to Tennessee's PSD and NNSR permitting regulations regarding the addition of clean coal technology (CCT) provisions. Third, the SIP revision provides clarifying changes and corrections to portions of the Tennessee NSR rule. All changes in the SIP revision comply with federal NSR permitting regulations found at 40 CFR 51.165 and 51.166. EPA is approving Tennessee's May 28, 2009, SIP revision because it is in accordance with the Clean Air Act (CAA or Act).