# Approval and Promulgation of Implementation Plans; State of Iowa
> **Rule** · Direct final rule. · Published 2014-05-15 · Effective 2014-07-14 · 79 FR 27763
## Document
- **Document number:** 2014-11088
- **Category:** air-emissions
- **Federal Register citation:** 79 FR 27763
- **CFR reference:** 40 CFR 52
- **Publication date:** 2014-05-15
- **Effective date:** 2014-07-14
- **State:** IA
- **EPA docket:** EPA-R07-OAR-2014-0165
## Abstract

The Environmental Protection Agency (EPA) is approving revisions to the State Implementation Plan (SIP) for the State of Iowa. This action will amend the SIP to include revised permitting regulations to allow facilities to construct or modify existing sources in areas that are not in attainment with the National Ambient Air Quality Standards. The rule revisions incorporate Federal regulation by reference. The provisions from previous nonattainment permitting rules are being retained and are now relocated to Chapter 31 "Nonattainment Areas". EPA is also acting to approve the SIP to update the rule revisions for the definition of excess emissions and conformity of general actions rule.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2014/05/15/2014-11088/approval-and-promulgation-of-implementation-plans-state-of-iowa)
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