# Contingency Measures for the 1997 PM2.5 Standards; California; San Joaquin Valley; Correction of Deficiency
> **Rule** · Final rule. · Published 2017-12-14 · Effective 2017-12-14 · 82 FR 58747
## Document
- **Document number:** 2017-26899
- **Category:** air-emissions
- **Federal Register citation:** 82 FR 58747
- **CFR reference:** 40 CFR 52
- **Publication date:** 2017-12-14
- **Effective date:** 2017-12-14
- **State:** CA
- **EPA docket:** EPA-R09-OAR-2017-0580
## Abstract

The Environmental Protection Agency (EPA or "Agency") is taking final action to determine that the deficiency that formed the basis for a disapproval of the contingency measures submitted for the San Joaquin Valley nonattainment area for the 1997 fine particulate matter (PM<INF>2.5</INF>) national ambient air quality standards (NAAQS) has been corrected. The effect of this action is to permanently stop the sanctions clocks triggered by the disapproval.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2017/12/14/2017-26899/contingency-measures-for-the-1997-pm25-standards-california-san-joaquin-valley-correction-of)
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