Designation of Areas for Air Quality Planning Purposes; California; South Coast; Reclassification as Serious Nonattainment for the 2006 PM2.5 NAAQS

The Environmental Protection Agency (EPA) is taking final action to reclassify the Los Angeles-South Coast Air Basin (South Coast) Moderate PM<INF>2.5</INF> nonattainment area, including areas of Indian country within it, as a Serious nonattainment area for the 2006 PM<INF>2.5</INF> national ambient air quality standards (NAAQS), based on the EPA's determination that the area cannot practicably attain these NAAQS by the applicable attainment date of December 31, 2015. As a consequence of this reclassification, California must submit, no later than 18 months from the effective date of this reclassification, nonattainment new source review (NNSR) program revisions and a Serious area attainment plan including a demonstration that the plan provides for attainment of the 2006 24-hour PM<INF>2.5</INF> standards in the South Coast area as expeditiously as practicable and no later than December 31, 2019.