# Air Plan Approval; Illinois; NAAQS Update
> **Rule** · Direct final rule. · Published 2024-10-03 · Effective 2024-12-02 · 89 FR 80402
## Document
- **Document number:** 2024-22730
- **Category:** air-emissions
- **Federal Register citation:** 89 FR 80402
- **CFR reference:** 40 CFR 52
- **Publication date:** 2024-10-03
- **Effective date:** 2024-12-02
- **State:** IL
- **EPA docket:** EPA-R05-OAR-2024-0105
## Abstract

The Environmental Protection Agency (EPA) is approving State Implementation Plan (SIP) revisions submitted by the Illinois Environmental Protection Agency (IEPA or Illinois). The revisions, submitted on February 26, 2024, and July 8, 2024, incorporate amendments to the Illinois air pollution control rules entitled "Part 243--Ambient Air Quality Standards" in response to EPA rulemakings and changes to the National Ambient Air Quality Standards (NAAQS) that EPA adopted in 2022 and 2023.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2024/10/03/2024-22730/air-plan-approval-illinois-naaqs-update)
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