# Air Plan Partial Approval and Partial Disapproval; California; San Diego
> **Rule** · Final rule. · Published 2020-12-03 · Effective 2021-01-04 · 85 FR 77996
## Document
- **Document number:** 2020-26649
- **Category:** air-emissions
- **Federal Register citation:** 85 FR 77996
- **CFR reference:** 40 CFR 52
- **Publication date:** 2020-12-03
- **Effective date:** 2021-01-04
- **State:** CA
- **EPA docket:** EPA-R09-OAR-2020-0136
## Abstract

The Environmental Protection Agency (EPA) is taking final action to partially approve and partially disapprove revisions to the San Diego Air Pollution Control District (SDAPCD or "District") portion of the California State Implementation Plan (SIP). These revisions concern the District's demonstration regarding reasonably available control technology (RACT) requirements and negative declarations for the 2008 ozone national ambient air quality standards (NAAQS or "standards") in the San Diego ozone nonattainment area under the jurisdiction of the SDAPCD.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2020/12/03/2020-26649/air-plan-partial-approval-and-partial-disapproval-california-san-diego)
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