# Withdrawal of Approval and Disapproval of Air Quality Implementation Plans; California; San Joaquin Valley; Contingency Measures for the 1997 PM2.5 Standards
> **Rule** · Final rule. · Published 2016-05-12 · Effective 2016-06-13 · 81 FR 29498
## Document
- **Document number:** 2016-11125
- **Category:** air-emissions
- **Federal Register citation:** 81 FR 29498
- **CFR reference:** 40 CFR 52
- **Publication date:** 2016-05-12
- **Effective date:** 2016-06-13
- **State:** CA
- **EPA docket:** EPA-R09-OAR-2013-0534
## Abstract

The Environmental Protection Agency (EPA) is withdrawing a May 22, 2014 final action approving a state implementation plan (SIP) revision submitted by the State of California under the Clean Air Act (CAA) to address contingency measure requirements for the 1997 annual and 24-hour national ambient air quality standards (NAAQS) for fine particulate matter (PM<INF>2.5</INF>) in the San Joaquin Valley. Simultaneously, EPA is disapproving this SIP submission. These final actions are in response to a decision issued by the U.S. Court of Appeals for the Ninth Circuit (Committee for a Better Arvin v. EPA, 786 F.3d 1169 (9th Cir. 2015)) remanding EPA's approval of a related SIP submission and rejecting EPA's rationale for approving plan submissions that rely on California mobile source control measures to meet SIP requirements such as contingency measures, which was a necessary basis for the May 22, 2014 final rule. Finally, EPA is issuing a protective finding for transportation conformity determinations for the disapproval.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2016/05/12/2016-11125/withdrawal-of-approval-and-disapproval-of-air-quality-implementation-plans-california-san-joaquin)
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