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

**Action Urgency Score:** 30/100

| Field | Value |
|---|---|
| Agency | Environmental Protection Agency |
| Type | Final rule |
| Action | Final action. |
| Published | 2026-10-01 |
| Effective | 2026-11-02 |
| Significant | No |
| CFR parts | 40 CFR 52 |
| Summary | 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 [micro]m 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. |
| Document number | 2026-20097 |

## Why this score
- Final rule.

Source: Federal Register API (Office of the Federal Register) (https://www.federalregister.gov/documents/2026/10/01/2026-20097/attainment-date-extension-for-the-south-coast-california-2012-annual-pm25-fine-particulate-matter). Last refreshed: 2026-11-04T09:17:43.641Z.
Data from the Federal Register API; the published Federal Register document is authoritative. Informational only, not legal advice.