Finding of Failure To Attain the Primary 2010 One-Hour Sulfur Dioxide Standard for the St. Bernard Parish, Louisiana Nonattainment Area

The Environmental Protection Agency (EPA) is making a determination that the St. Bernard Parish sulfur dioxide (SO<INF>2</INF>) nonattainment area ("St. Bernard area" or "area") failed to attain the primary 2010 one-hour SO<INF>2</INF> national ambient air quality standard (NAAQS) under the Clean Air Act (CAA or the Act) by the applicable attainment date of October 4, 2018. This determination is based upon consideration of and review of all relevant and available information for the St. Bernard area leading up to the area's attainment date of October 4, 2018, including emissions and monitoring data, compliance records for the area's primary SO<INF>2</INF> source, the Rain CII Carbon, LLC (Rain) facility, and air quality dispersion modeling based on the allowable limits.