# Revisions to the California State Implementation Plan, North Coast Unified Air Quality Management District.
> **Rule** · Direct final rule. · Published 2009-05-06 · Effective 2009-07-06 · 74 FR 20874
## Document
- **Document number:** E9-10509
- **Category:** air-emissions
- **Federal Register citation:** 74 FR 20874
- **CFR reference:** 40 CFR 52
- **Publication date:** 2009-05-06
- **Effective date:** 2009-07-06
- **State:** CA
- **EPA docket:** EPA-R09-OAR-2008-0668
## Abstract

EPA is taking direct final action to approve revisions to the North Coast Unified Air Quality Management District (NCUAQMD) portion of the California State Implementation Plan (SIP). This action revises and adds various definitions of terms used by the NCUAQMD. Under authority of the Clean Air Act as amended in 1990 (CAA or the Act), we are approving local rules that are administrative and address changes for clarity and consistency.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2009/05/06/E9-10509/revisions-to-the-california-state-implementation-plan-north-coast-unified-air-quality-management)
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