# Approval and Promulgation of Implementation Plans; State of Iowa
> **Rule** · Direct final rule. · Published 1999-03-11 · Effective 1999-05-10 · 64 FR 12087
## Document
- **Document number:** 99-5824
- **Category:** air-emissions
- **Federal Register citation:** 64 FR 12087
- **CFR reference:** 40 CFR 52
- **Publication date:** 1999-03-11
- **Effective date:** 1999-05-10
- **State:** IA
- **EPA docket:** IA 058-1058a
## Abstract

The EPA is approving a revision to the Iowa State Implementation Plan (SIP) which provides for the attainment and maintenance of the sulfur dioxide (SO<INF>2</INF>) National Ambient Air Quality Standard (NAAQS) in Cedar Rapids, Iowa. This revision approves a state Administrative Consent Order (ACO) and Emission Control Plan (ECP) which requires reductions of SO<INF>2</INF> emissions from certain major sources in Cedar Rapids, Iowa. Approval of this SIP revision will make the state ACO and ECP Federally enforceable.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/03/11/99-5824/approval-and-promulgation-of-implementation-plans-state-of-iowa)
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