# Air Plan Approval; Illinois; State Board and Infrastructure SIP Requirements
> **Rule** · Final rule. · Published 2019-09-23 · Effective 2019-10-23 · 84 FR 49671
## Document
- **Document number:** 2019-20129
- **Category:** air-emissions
- **Federal Register citation:** 84 FR 49671
- **CFR reference:** 40 CFR 52
- **Publication date:** 2019-09-23
- **Effective date:** 2019-10-23
- **State:** IL
- **EPA docket:** EPA-R05-OAR-2018-0043
## Abstract

The Environmental Protection Agency (EPA) is approving revisions to the Illinois state implementation plan (SIP) addressing the state board requirements under section 128 of the Clean Air Act (CAA) and the related infrastructure element for several National Ambient Air Quality Standard (NAAQS) infrastructure submissions. The infrastructure requirements are designed to ensure that the structural components of each state's air quality management program are adequate to meet the state's responsibilities under the CAA.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2019/09/23/2019-20129/air-plan-approval-illinois-state-board-and-infrastructure-sip-requirements)
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