# Approval and Promulgation of Air Quality Implementation Plans; Indiana
> **Rule** · Direct final rule. · Published 2009-11-20 · Effective 2010-01-19 · 74 FR 60197
## Document
- **Document number:** E9-27817
- **Category:** air-emissions
- **Federal Register citation:** 74 FR 60197
- **CFR reference:** 40 CFR 52
- **Publication date:** 2009-11-20
- **Effective date:** 2010-01-19
- **State:** IN
- **EPA docket:** EPA-R05-OAR-2009-0771
## Abstract

EPA is approving a request submitted by the Indiana Department of Environmental Management (IDEM) on September 25, 2009, 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 2008 edition.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2009/11/20/E9-27817/approval-and-promulgation-of-air-quality-implementation-plans-indiana)
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