Approval and Promulgation of Implementation Plans; Tennessee; Bristol; 2010 Lead Base Year Emissions Inventory and Conversion of Conditional Approvals for Prevention of Significant Deterioration

The Environmental Protection Agency (EPA) is approving the Lead 2010 base year emissions inventory State Implementation Plan (SIP) revision submitted by the State of Tennessee, through the Tennessee Department of Environment and Conservation (TDEC) on April 11, 2013. The emissions inventory was submitted to meet the requirements of the Clean Air Act (CAA or Act) for the Bristol 2008 Lead National Ambient Air Quality Standards (NAAQS) nonattainment area (hereafter also referred to as the "Bristol Area" or "Area"). Additionally, EPA is converting conditional approvals to full approvals for Tennessee's 1997 annual fine particulate matter (PM<INF>2.5</INF>) NAAQS, 2006 24-hour PM<INF>2.5</INF> NAAQS and 2008 8-hour ozone NAAQS infrastructure SIPs as they relate to adequate provisions prohibiting emissions that interfere with any other State's required measures to prevent significant deterioration of its air quality. EPA conditionally approved these portions of Tennessee's infrastructure SIPs for these NAAQS on March 6, 2013, and March 26, 2013. Tennessee has since met the obligations associated with these conditional approvals, and therefore, EPA is converting the conditional approvals to full approvals.