Attainment Date Extension for the South Coast, California 2012 Annual PM2.5 Fine Particulate Matter Nonattainment Area
The comment period closed Jul 13, 2026.
The Environmental Protection Agency (EPA) is proposing to grant an extension of the "Serious" area attainment date for the Los Angeles-South Coast Air Basin ("South Coast") nonattainment area for the 2012 annual fine particulate matter (PM<INF>2.5</INF>) national ambient air quality standards (NAAQS or "standards") from December 31, 2025, to December 31, 2030, based on a proposed determination tha
Summary from the Federal Register.
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- Jun 11, 2026
Rule published
Attainment Date Extension for the South Coast, California 2012 Annual PM2.5 Fine Particulate Matter Nonattainment Area
Environmental Protection Agency
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