# Approval and Promulgation of Air Quality Implementation Plans; Indiana
> **Rule** · Direct final rule. · Published 2013-10-23 · Effective 2013-12-23 · 78 FR 63093
## Document
- **Document number:** 2013-24118
- **Category:** air-emissions
- **Federal Register citation:** 78 FR 63093
- **CFR reference:** 40 CFR 52
- **Publication date:** 2013-10-23
- **Effective date:** 2013-12-23
- **State:** IN
- **EPA docket:** EPA-R05-OAR-2011-0828
## Abstract

On September 19, 2011, Indiana submitted changes to its monitoring rules to EPA as a revision to its state implementation plan (SIP). The monitoring rules will be used to determine whether various source categories are in compliance with the applicable emission limits. On September 6, 2013, Indiana made a supplemental submission of a related definition. For the reasons discussed below, EPA is approving these revisions to the monitoring rules in the Indiana SIP.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/10/23/2013-24118/approval-and-promulgation-of-air-quality-implementation-plans-indiana)
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