# Air Plan Approval; Illinois; Nonattainment New Source Review Requirements for the 2008 8-Hour Ozone Standard
> **Rule** · Final rule. · Published 2019-02-06 · Effective 2019-03-08 · 84 FR 2063
## Document
- **Document number:** 2018-27907
- **Category:** air-emissions
- **Federal Register citation:** 84 FR 2063
- **CFR reference:** 40 CFR 52
- **Publication date:** 2019-02-06
- **Effective date:** 2019-03-08
- **State:** IL
- **EPA docket:** EPA-R05-OAR-2018-0383
## Abstract

The Environmental Protection Agency (EPA) is approving, as a State Implementation Plan (SIP) revision, Illinois' certification that its SIP satisfies the nonattainment new source review (NNSR) requirements of the Clean Air Act (CAA) for the 2008 8-hour ozone National Ambient Air Quality Standard ("NAAQS" or "Standard"). This action permanently stops the Federal Implementation Plan (FIP) clocks triggered by EPA's February 3 and December 11, 2017 findings that Illinois failed to submit an NNSR plan for the Illinois portion of the Chicago-Naperville, Illinois-Indiana-Wisconsin area (Chicago Nonattainment Area).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2019/02/06/2018-27907/air-plan-approval-illinois-nonattainment-new-source-review-requirements-for-the-2008-8-hour-ozone)
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