# Air Plan Approval; Michigan; Infrastructure SIP Requirements for the 2015 Ozone NAAQS; Michigan State Board Requirements; Withdrawal of Direct Final Rule
> **Rule** · Withdrawal of direct final rule. · Published 2026-01-06 · 91 FR 335
## Document
- **Document number:** 2026-00004
- **Category:** air-emissions
- **Federal Register citation:** 91 FR 335
- **CFR reference:** 40 CFR 52
- **Publication date:** 2026-01-06
- **State:** MI
- **EPA docket:** EPA-R05-OAR-2019-0215
## Abstract

Due to the receipt of an adverse comment, the Environmental Protection Agency (EPA) is withdrawing the November 20, 2025, direct final rule approving an element of a State Implementation Plan (SIP) submission from Michigan regarding the infrastructure requirements of section 110 of the Clean Air Act (CAA) for the 2015 ozone National Ambient Air Quality Standards (NAAQS).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2026/01/06/2026-00004/air-plan-approval-michigan-infrastructure-sip-requirements-for-the-2015-ozone-naaqs-michigan-state)
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