# Approval and Promulgation of Air Quality Implementation Plans; Indiana; Revised Format for Materials Being Incorporated by Reference
> **Rule** · Final rule; Administrative change. · Published 2010-09-24 · Effective 2010-09-24 · 75 FR 58305
## Document
- **Document number:** 2010-23802
- **Category:** air-emissions
- **Federal Register citation:** 75 FR 58305
- **CFR reference:** 40 CFR 52
- **Publication date:** 2010-09-24
- **Effective date:** 2010-09-24
- **State:** IN
- **EPA docket:** IN 171
## Abstract

EPA is revising the format of its regulations for materials submitted by the State of Indiana that have been incorporated by reference (IBR) into its State Implementation Plan (SIP). The regulations and other materials affected by this format change have all been previously submitted by Indiana and approved by EPA as SIP revisions.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2010/09/24/2010-23802/approval-and-promulgation-of-air-quality-implementation-plans-indiana-revised-format-for-materials)
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