# Air Plan Approval; California; Mojave Desert Air Quality Management District; Replacing Outdated Requirements
> **Rule** · Final rule. · Published 2026-01-08 · Effective 2026-02-09 · 91 FR 613
## Document
- **Document number:** 2026-00208
- **Category:** air-emissions
- **Federal Register citation:** 91 FR 613
- **CFR reference:** 40 CFR 52
- **Publication date:** 2026-01-08
- **Effective date:** 2026-02-09
- **State:** CA
- **EPA docket:** EPA-R09-OAR-2024-0210
## Abstract

The Environmental Protection Agency (EPA) is taking final action to approve revisions to the Mojave Desert Air Quality Management District (MDAQMD or "District") portion of the California State Implementation Plan (SIP). These revisions concern certain amended or rescinded prohibitory and administrative rules. We are approving action on amended or rescinded rules that regulate the pollutants under the Clean Air Act (CAA or "Act").

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2026/01/08/2026-00208/air-plan-approval-california-mojave-desert-air-quality-management-district-replacing-outdated)
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