Approval and Promulgation of Air Quality Implementation Plans; Louisiana; Baton Rouge 8-Hour Ozone Nonattainment Area; Determination of Attainment of the 8-Hour Ozone Standard

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The EPA has determined that the Baton Rouge (BR) moderate 8- hour ozone nonattainment area has attained the 1997 8-hour ozone National Ambient Air Quality Standard (NAAQS). This determination is based upon complete, quality assured, certified ambient air monitoring data that show the area has monitored attainment of the 1997 8-hour ozone NAAQS for the 2006-2008 and 2007-2009 monitoring periods. Preliminary data available for 2010 is consistent with continued attainment. Under the provisions of EPA's 8-hour ozone implementation rule, as a consequence of this determination the requirements for this area to submit an attainment demonstration, a reasonable further progress plan, contingency measures, and other planning State Implementation Plan (SIP) requirements related to attainment of the 1997 8-hour ozone NAAQS, are suspended for so long as the area continues to attain the 1997 8-hour ozone NAAQS.