# Approval and Promulgation of Air Quality Implementation Plans; Indiana
> **Rule** · Direct final rule. · Published 2011-05-13 · Effective 2011-07-12 · 76 FR 27904
## Document
- **Document number:** 2011-11726
- **Category:** air-emissions
- **Federal Register citation:** 76 FR 27904
- **CFR reference:** 40 CFR 52
- **Publication date:** 2011-05-13
- **Effective date:** 2011-07-12
- **State:** IN
- **EPA docket:** EPA-R05-OAR-2010-0999
## Abstract

EPA is approving a request submitted by the Indiana Department of Environmental Management (IDEM) on November 24, 2010, to revise the Indiana State Implementation Plan (SIP). The submission revises the Indiana Administrative Code (IAC) by amending and updating the definition of "References to the Code of Federal Regulations," to refer to the 2009 edition. The submission also makes a minor revision to the definition of "Nonphotochemically reactive hydrocarbons" or "negligibly photochemically reactive compounds" by deleting an outdated Federal Register citation.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2011/05/13/2011-11726/approval-and-promulgation-of-air-quality-implementation-plans-indiana)
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