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2026-10-01 · Rule · Federal Register document 2026-20097

Attainment Date Extension for the South Coast, California 2012 Annual PM2.5 Fine Particulate Matter Nonattainment Area

Official abstract: The U.S. Environmental Protection Agency (EPA or "Agency") is granting an extension of the "Serious" area attainment date for the Los Angeles-South Coast Air Basin ("South Coast Air Basin" or "South Coast") nonattainment area for the 2012 annual fine particulate matter less than or equal to 2.5 µm in diameter (PM<INF>2.5</INF>) national ambient air quality standards (NAAQS) from December 31, 2025, to December 31, 2030, based on a determination that the State has satisfied the statutory criteria for this extension.