# Air Plan Approval; Michigan; Michigan Minor New Source Review
> **Rule** · Final rule. · Published 2019-03-11 · Effective 2019-04-10 · 84 FR 8610
## Document
- **Document number:** 2019-04162
- **Category:** air-emissions
- **Federal Register citation:** 84 FR 8610
- **CFR reference:** 40 CFR 52
- **Publication date:** 2019-03-11
- **Effective date:** 2019-04-10
- **State:** MI
- **EPA docket:** EPA-R05-OAR-2007-1092
## Abstract

The Environmental Protection Agency (EPA) is approving the rescission of Michigan rule 221 from the Michigan state implementation plan (SIP). Rule 221 exempted sources that had significant net emission increases of sulfur dioxide, particulate matter, and carbon monoxide from offset requirements. Michigan rescinded this rule effective November 14, 1990.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2019/03/11/2019-04162/air-plan-approval-michigan-michigan-minor-new-source-review)
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