# Air Plan Approval; Pennsylvania; Attainment Plan for the Indiana Nonattainment Area for the 2010 1-Hour Sulfur Dioxide National Ambient Air Quality Standard
> **Rule** · Final rule. · Published 2024-09-13 · Effective 2024-10-15 · 89 FR 74836
## Document
- **Document number:** 2024-20598
- **Category:** air-emissions
- **Federal Register citation:** 89 FR 74836
- **CFR reference:** 40 CFR 52
- **Publication date:** 2024-09-13
- **Effective date:** 2024-10-15
- **State:** IN
- **EPA docket:** EPA-R03-OAR-2024-0024
## Abstract

The Environmental Protection Agency (EPA) is approving a state implementation plan (SIP) revision submitted by the Commonwealth of Pennsylvania (Pennsylvania or PA). The revision pertains to the attainment plan for the Indiana, PA nonattainment area for the 2010 1- hour sulfur dioxide (SO<INF>2</INF>) national ambient air quality standard (NAAQS). The EPA is approving these revisions to the Pennsylvania SIP in accordance with the requirements of the Clean Air Act (CAA).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2024/09/13/2024-20598/air-plan-approval-pennsylvania-attainment-plan-for-the-indiana-nonattainment-area-for-the-2010)
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