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

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EPA is proposing 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 proposed SIP revision modifies Tennessee's New Source Review (NSR) Prevention of Significant Deterioration (PSD) and Nonattainment New Source Review (NNSR) programs. Tennessee's May 28, 2009, SIP revision makes several changes for which EPA is proposing approval in this rulemaking. First, the proposed revision addresses requirements promulgated in the 1997 8-Hour Ozone National Ambient Air Quality Standards (NAAQS) plementation Rule NSR Update Phase II (hereafter referred to as the "Ozone Implementation NSR Update" or "Phase II Rule"). Second, the May 28, 2009, SIP revision includes updates to Tennessee's PSD and NNSR permitting regulations regarding the addition of clean coal technology (CCT) requirements. Lastly, the SIP revision includes clarifying changes and corrections to portions of the Tennessee NSR rule. All changes in the proposed SIP revision are necessary to comply with Federal regulations related to Tennessee's NSR permitting program. E