# Approval and Promulgation of Air Quality Implementation Plans; States of Michigan and Minnesota; Regional Haze
> **Rule** · Final rule. · Published 2013-09-30 · Effective 2013-10-30 · 78 FR 59825
## Document
- **Document number:** 2013-23394
- **Category:** air-emissions
- **Federal Register citation:** 78 FR 59825
- **CFR reference:** 40 CFR 52
- **Publication date:** 2013-09-30
- **Effective date:** 2013-10-30
- **State:** MI
- **EPA docket:** EPA-R05-OAR-2010-0954 and EPA-RO5-OAR-2010-0037
## Abstract

In this notice of final rulemaking, EPA is disapproving in part the Michigan and Minnesota regional haze State Implementation Plans (SIPs) for failure to mandate best available retrofit technology (BART) for taconite facilities within these states. This final rule supplements a February 6, 2013, action that established Federal emission limits representing BART for these facilities.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/09/30/2013-23394/approval-and-promulgation-of-air-quality-implementation-plans-states-of-michigan-and-minnesota)
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