Finding of Failure to Attain by the Attainment Date for the 2010 1-Hour Primary Sulfur Dioxide National Ambient Air Quality Standard; Louisiana; Evangeline Parish Nonattainment Area

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Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is proposing to determine that the Evangeline Parish, Louisiana, sulfur dioxide (SO 2 ) nonattainment area (NAA) has failed to attain the 2010 1-hour primary SO 2 national ambient air quality standard (2010 SO 2 NAAQS) by the applicable statutory attainment date of April 9, 2023. This determination is based on analysis of reported emissions records and available modeling data. This action, if finalized, will address the EPA's obligation under CAA section 179(c) to determine whether the Evangeline Parish SO 2 NAA attained the 2010 SO 2 NAAQS by the April 9, 2023, attainment date.