# Approval and Promulgation of Implementation Plans; State of Iowa
> **Rule** · Direct final rule. · Published 2014-10-21 · Effective 2014-12-22 · 79 FR 62852
## Document
- **Document number:** 2014-24860
- **Category:** air-emissions
- **Federal Register citation:** 79 FR 62852
- **CFR reference:** 40 CFR 52
- **Publication date:** 2014-10-21
- **Effective date:** 2014-12-22
- **State:** IA
- **EPA docket:** EPA-R07-OAR-2014-0300
## Abstract

The Environmental Protection Agency (EPA) is approving the State Implementation Plan (SIP) revisions submitted by the State of Iowa for the purpose of approving the 2008, 2009, 2011, 2012, and 2013 updates to the Linn County Air Quality Ordinance. EPA is approving Iowa's request to include revisions to the Linn County Air Quality Ordinance, Chapter 10, because the revisions improve the stringency of the Iowa SIP.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2014/10/21/2014-24860/approval-and-promulgation-of-implementation-plans-state-of-iowa)
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