# Air Plan Approval; California; Northern Sierra Air Quality Management District; Reasonably Available Control Technology
> **Rule** · Final rule. · Published 2022-08-03 · Effective 2022-09-02 · 87 FR 47354
## Document
- **Document number:** 2022-16019
- **Category:** air-emissions
- **Federal Register citation:** 87 FR 47354
- **CFR reference:** 40 CFR 52
- **Publication date:** 2022-08-03
- **Effective date:** 2022-09-02
- **State:** CA
- **EPA docket:** EPA-R09-OAR-2021-0818
## Abstract

The Environmental Protection Agency (EPA) is taking final action to approve a revision to the Northern Sierra Air Quality Management District (NSAQMD or "District") portion of the California State Implementation Plan (SIP). This revision concerns NSAQMD's demonstration regarding reasonably available control technology (RACT) requirements and negative declarations for the 2015 8-hour ozone national ambient air quality standards (NAAQS or "standards") in the Western Nevada County ozone nonattainment area, which is under the jurisdiction of the District.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2022/08/03/2022-16019/air-plan-approval-california-northern-sierra-air-quality-management-district-reasonably-available)
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