# Approval and Promulgation of Implementation Plans; State of Iowa; 2014 Iowa State Implementation Plan
> **Rule** · Final rule. · Published 2014-12-01 · Effective 2014-12-31 · 79 FR 71025
## Document
- **Document number:** 2014-28147
- **Category:** air-emissions
- **Federal Register citation:** 79 FR 71025
- **CFR reference:** 40 CFR 52
- **Publication date:** 2014-12-01
- **Effective date:** 2014-12-31
- **State:** IA
- **EPA docket:** EPA-R07-OAR-2014-0550
## Abstract

The Environmental Protection Agency (EPA) is taking final action to approve a revision to the State Implementation Plan (SIP) for the State of Iowa. This final action will approve a revision to Iowa's SIP for the 2006 24-hour PM<INF>2.5</INF> National Ambient Air Quality Standards (NAAQS). The proposed action was published in the Federal Register on August 11, 2014. As stated in the proposal, the SIP revision submitted by the state satisfies the applicable requirements of the Clean Air Act (CAA) and will keep the Muscatine County, Iowa area in attainment of the 2006 24-hour PM<INF>2.5</INF> NAAQS.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2014/12/01/2014-28147/approval-and-promulgation-of-implementation-plans-state-of-iowa-2014-iowa-state-implementation-plan)
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