# Approval and Promulgation of Implementation Plans; Minnesota
> **Rule** · Direct final rule. · Published 1998-10-13 · Effective 1998-12-14 · 63 FR 54585
## Document
- **Document number:** 98-26897
- **Category:** air-emissions
- **Federal Register citation:** 63 FR 54585
- **CFR reference:** 40 CFR 52
- **Publication date:** 1998-10-13
- **Effective date:** 1998-12-14
- **State:** MN
- **EPA docket:** MN52-01-7277a
## Abstract

The Environmental Protection Agency (EPA) is approving revisions to Minnesota's State Implementation Plan (SIP) for sulfur dioxide (SO<INF>2</INF>) in Air Quality Control Region (AQCR) 131. The EPA's action is based upon a revision request submitted by the State of Minnesota on April 24, 1997, which amends two State Administrative Orders for two Northern States Power facilities: Inver Hills and Riverside. The Orders are included as part of Minnesota's approved SIP to attain and maintain the National Ambient Air Quality Standard for sulfur dioxide.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1998/10/13/98-26897/approval-and-promulgation-of-implementation-plans-minnesota)
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