# Approval and Promulgation of Air Quality Implementation Plans; Minnesota
> **Rule** · Direct final rule. · Published 2009-12-02 · Effective 2010-02-01 · 74 FR 63066
## Document
- **Document number:** E9-28681
- **Category:** air-emissions
- **Federal Register citation:** 74 FR 63066
- **CFR reference:** 40 CFR 52
- **Publication date:** 2009-12-02
- **Effective date:** 2010-02-01
- **State:** MN
- **EPA docket:** EPA-R05-OAR-2007-1130
## Abstract

EPA is approving a site-specific revision to the Minnesota sulfur dioxide (SO<INF>2</INF>) State Implementation Plan (SIP) for the Rochester Public Utilities Silver Lake Plant (RPU-SLP), located in Rochester, Minnesota. In its October 16, 2007, submittal, the Minnesota Pollution Control Agency (MPCA) requested that EPA approve certain conditions contained in RPU-SLP's revised Federally enforceable joint Title I/Title V document into the Minnesota SO<INF>2</INF> SIP. The request is approvable because it satisfies the requirements of the Clean Air Act (CAA). The rationale for the approval and other information are provided in this rulemaking action.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2009/12/02/E9-28681/approval-and-promulgation-of-air-quality-implementation-plans-minnesota)
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