# Air Plan Approval and Attainment Date Extension; 1997 Annual Fine Particulate Matter Nonattainment Area; San Joaquin Valley, California
> **Rule** · Final rule. · Published 2024-11-19 · Effective 2024-12-19 · 89 FR 91263
## Document
- **Document number:** 2024-25946
- **Category:** air-emissions
- **Federal Register citation:** 89 FR 91263
- **CFR reference:** 40 CFR 52
- **Publication date:** 2024-11-19
- **Effective date:** 2024-12-19
- **State:** CA
- **EPA docket:** EPA-R09-OAR-2024-0250 and EPA-R09-OAR-2024-0301
## Abstract

The Environmental Protection Agency (EPA) is finalizing approval of a state implementation plan (SIP) revision submitted by the State of California to meet Clean Air Act (CAA or "Act") requirements for the 1997 fine particulate matter (PM<INF>2.5</INF>) national ambient air quality standards (NAAQS or "standards") in the San Joaquin Valley "Serious" nonattainment area. The EPA is also finalizing a one-year extension of the applicable attainment date from December 31, 2023, to December 31, 2024, for the 1997 annual PM<INF>2.5</INF> San Joaquin Valley, California, nonattainment area based on our evaluation of air quality monitoring data and the extension request and supporting information submitted by the State of California.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2024/11/19/2024-25946/air-plan-approval-and-attainment-date-extension-1997-annual-fine-particulate-matter-nonattainment)
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