# Approval and Promulgation of Air Quality Implementation Plans; Minnesota; Sulfur Dioxide SIP Revision for Marathon Petroleum St. Paul Park
> **Rule** · Direct final rule. · Published 2010-12-28 · Effective 2011-02-28 · 75 FR 81471
## Document
- **Document number:** 2010-32482
- **Category:** air-emissions
- **Federal Register citation:** 75 FR 81471
- **CFR reference:** 40 CFR 52
- **Publication date:** 2010-12-28
- **Effective date:** 2011-02-28
- **State:** MN
- **EPA docket:** EPA-R05-OAR-2009-0808
## Abstract

On October 6, 2009, Minnesota submitted a request for a sulfur dioxide State Implementation Plan revision for Marathon Petroleum in St. Paul Park. This submittal updates the State Implementation Plan to reflect the installation of new boilers and a sulfur recovery unit and changes to three existing heaters. Overall, this update represents a decrease in sulfur dioxide emissions. EPA is approving these revisions under the Clean Air Act.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2010/12/28/2010-32482/approval-and-promulgation-of-air-quality-implementation-plans-minnesota-sulfur-dioxide-sip-revision)
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