# Air Plan Approvals; KY; Prevention of Significant Deterioration and Modeling Infrastructure Requirements for 2015 Ozone NAAQS
> **Rule** · Final rule. · Published 2020-09-02 · Effective 2020-10-02 · 85 FR 54507
## Document
- **Document number:** 2020-17263
- **Category:** air-emissions
- **Federal Register citation:** 85 FR 54507
- **CFR reference:** 40 CFR 52
- **Publication date:** 2020-09-02
- **Effective date:** 2020-10-02
- **EPA docket:** EPA-R04-OAR-2019-0217
## Abstract

The Environmental Protection Agency (EPA) is taking final action to approve portions of the Kentucky infrastructure State Implementation Plan (SIP) submission for the 2015 8-hour ozone National Ambient Air Quality Standards (NAAQS) submitted to EPA in a letter dated January 11, 2019. Whenever EPA promulgates a new or revised NAAQS, the Clean Air Act (CAA or Act) requires that each state adopt and submit a SIP submission to establish that the state's SIP meets infrastructure requirements for the implementation, maintenance, and enforcement of each such NAAQS. Specifically, EPA is taking final action to approve portions of the Kentucky infrastructure SIP submission that address the prevention of significant deterioration (PSD) and modeling requirements for the 2015 8-hour ozone NAAQS.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2020/09/02/2020-17263/air-plan-approvals-ky-prevention-of-significant-deterioration-and-modeling-infrastructure)
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