# Approval and Promulgation of State Implementation Plans; Michigan
> **Rule** · Final rule. · Published 1998-02-20 · Effective 1998-03-23 · 63 FR 8573
## Document
- **Document number:** 98-4003
- **Category:** air-emissions
- **Federal Register citation:** 63 FR 8573
- **CFR reference:** 40 CFR 52
- **Publication date:** 1998-02-20
- **Effective date:** 1998-03-23
- **State:** MI
- **EPA docket:** MI58-01-7266
## Abstract

This rulemaking finalizes the United States Environmental Protection Agency's (USEPA) disapproval of the State Implementation Plan (SIP) revision submitted by Michigan containing start-up, shutdown and malfunction (SSM) regulations which would apply generally to sources covered under the applicable SIP. This action is being taken under section 110 of the Clean Air Act (Act).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1998/02/20/98-4003/approval-and-promulgation-of-state-implementation-plans-michigan)
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