# Air Plan Approval; KY; Existing Indirect Heat Exchangers for Jefferson County
> **Rule** · Final rule. · Published 2019-10-01 · Effective 2019-10-31 · 84 FR 52003
## Document
- **Document number:** 2019-20841
- **Category:** other
- **Federal Register citation:** 84 FR 52003
- **CFR reference:** 40 CFR 52
- **Publication date:** 2019-10-01
- **Effective date:** 2019-10-31
- **EPA docket:** EPA-R04-OAR-2019-0278
## Abstract

The Environmental Protection Agency (EPA or Agency) is approving changes to the Jefferson County portion of the Kentucky State Implementation Plan (SIP), submitted by the Commonwealth of Kentucky, through the Energy and Environment Cabinet (Cabinet), through a letter dated March 15, 2018. The changes were submitted by the Cabinet on behalf of the Louisville Metro Air Pollution Control District (District, also referred to herein as Jefferson County). The SIP revision includes changes to Jefferson County Regulations regarding existing indirect heat exchangers.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2019/10/01/2019-20841/air-plan-approval-ky-existing-indirect-heat-exchangers-for-jefferson-county)
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