# Approval of California Air Plan Revisions, Mojave Desert Air Quality Management District, Northern Sierra Air Quality Management District, and San Diego County Air Pollution Control District
> **Rule** · Direct final rule. · Published 2017-06-21 · Effective 2017-08-21 · 82 FR 28240
## Document
- **Document number:** 2017-12475
- **Category:** air-emissions
- **Federal Register citation:** 82 FR 28240
- **CFR reference:** 40 CFR 52
- **Publication date:** 2017-06-21
- **Effective date:** 2017-08-21
- **State:** CA
- **EPA docket:** EPA-R09-OAR-2016-0647
## Abstract

The Environmental Protection Agency (EPA) is taking direct final action to approve revisions to the Mojave Desert Air Quality Management District (MDAQMD), Northern Sierra Air Quality Management District (NSAQMD), and San Diego County Air Pollution Control District (SDCAPCD) portions of the California State Implementation Plan (SIP). These revisions concern aerospace assembly, rework, and component manufacturing operations; emissions statements and recordkeeping; and definitions, respectively. We are approving local rules that regulate these sources and issues under the Clean Air Act (CAA or the Act).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2017/06/21/2017-12475/approval-of-california-air-plan-revisions-mojave-desert-air-quality-management-district-northern)
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