# Air Plan Approval; Missouri; Control of Sulfur Emissions From Stationary Boilers
> **Rule** · Final rule. · Published 2020-08-18 · Effective 2020-09-17 · 85 FR 50784
## Document
- **Document number:** 2020-16148
- **Category:** air-emissions
- **Federal Register citation:** 85 FR 50784
- **CFR reference:** 40 CFR 52
- **Publication date:** 2020-08-18
- **Effective date:** 2020-09-17
- **State:** MO
- **EPA docket:** EPA-R07-OAR-2020-0277
## Abstract

The Environmental Protection Agency (EPA) is taking final action to approve a State Implementation Plan (SIP) revision submitted by the State of Missouri on January 14, 2019. Missouri requests that the EPA revise a state regulation approved in the SIP related to sulfur emissions from industrial, commercial, or institutional boilers or process heaters in the St. Louis metropolitan area. The revisions to this rule include adding incorporations by reference to other state rules, including definitions specific to the rule, and wording changes that are administrative in nature and do not change the interpretation of the rule or the applicability of the rule. The EPA's approval of this rule revision is in accordance with the requirements of the Clean Air Act (CAA).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2020/08/18/2020-16148/air-plan-approval-missouri-control-of-sulfur-emissions-from-stationary-boilers)
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