# Air Plan Approval and Air Quality Designation; KY; Redesignation of the Kentucky Portion of the Louisville Unclassifiable Area
> **Rule** · Final rule. · Published 2018-08-20 · Effective 2018-09-19 · 83 FR 42034
## Document
- **Document number:** 2018-17935
- **Category:** air-emissions
- **Federal Register citation:** 83 FR 42034
- **CFR reference:** 40 CFR 81
- **Publication date:** 2018-08-20
- **Effective date:** 2018-09-19
- **State:** KY
- **EPA docket:** EPA-R04-OAR-2017-0390
## Abstract

On May 4, 2018, the Commonwealth of Kentucky, through the Kentucky Energy and Environment Cabinet, Division for Air Quality (KDAQ), submitted a request for the Environmental Protection Agency (EPA) to redesignate the portion of Kentucky that is within the bi- state Louisville, KY-IN fine particulate matter (PM<INF>2.5</INF>) unclassifiable area (hereinafter referred to as the "bi-state Louisville Area" or "Area") to unclassifiable/attainment for the 2012 primary annual PM<INF>2.5</INF> national ambient air quality standard (NAAQS). The bi-state Louisville Area consists of Jefferson County and a portion of Bullitt County in Kentucky, as well as Clark and Floyd Counties in Indiana. EPA is approving the State's request and redesignating the Area to unclassifiable/attainment for the 2012 primary annual PM<INF>2.5</INF> NAAQS based upon valid, quality- assured, and certified ambient air monitoring data showing that the PM<INF>2.5</INF> monitors in the bi-state Louisville Area are in compliance with the 2012 primary annual PM<INF>2.5</INF> NAAQS.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/08/20/2018-17935/air-plan-approval-and-air-quality-designation-ky-redesignation-of-the-kentucky-portion-of-the)
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