# Outer Continental Shelf Air Regulations Consistency Update for California
> **Rule** · Final rule--consistency update. · Published 2009-06-18 · Effective 2009-07-20 · 74 FR 28875
## Document
- **Document number:** E9-13603
- **Category:** air-emissions
- **Federal Register citation:** 74 FR 28875
- **CFR reference:** 40 CFR 55
- **Publication date:** 2009-06-18
- **Effective date:** 2009-07-20
- **State:** CA
- **EPA docket:** OAR-2004-0091
## Abstract

EPA is finalizing the update of the Outer Continental Shelf ("OCS") Air Regulations proposed in the Federal Register on March 17, 2009. Requirements applying to OCS sources located within 25 miles of states' seaward boundaries must be updated periodically to remain consistent with the requirements of the corresponding onshore area ("COA"), as mandated by section 328(a)(1) of the Clean Air Act Amendments of 1990 ("the Act"). The portion of the OCS air regulations that is being updated pertains to the requirements for OCS sources for which the Ventura County Air Pollution Control District (Ventura County APCD) is the designated COA. The intended effect of approving the requirements contained in the "Ventura County Air Pollution Control District Requirements Applicable to OCS Sources" (May 2009) is to regulate emissions from OCS sources in accordance with the requirements onshore.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2009/06/18/E9-13603/outer-continental-shelf-air-regulations-consistency-update-for-california)
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