# Air Plan Approval; Illinois; Regional Haze Progress Report
> **Rule** · Final rule. · Published 2018-04-12 · Effective 2018-05-14 · 83 FR 15744
## Document
- **Document number:** 2018-07519
- **Category:** air-emissions
- **Federal Register citation:** 83 FR 15744
- **CFR reference:** 40 CFR 52
- **Publication date:** 2018-04-12
- **Effective date:** 2018-05-14
- **State:** IL
- **EPA docket:** EPA-R05-OAR-2017-0082
## Abstract

The Environmental Protection Agency (EPA) is approving the regional haze progress report under the Clean Air Act (CAA) as a revision to the Illinois state implementation plan (SIP). Illinois has satisfied the progress report requirements of the Regional Haze Rule. Illinois has also provided a determination of the adequacy of its regional haze plan with the progress report.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/04/12/2018-07519/air-plan-approval-illinois-regional-haze-progress-report)
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