Data / Federal rules / 2026-20641
Air Plan Approval; Kentucky; Louisville Area Limited Maintenance Plan for the 1997 8-Hour Ozone NAAQS
The Environmental Protection Agency published this final rule in the Federal Register on October 8, 2026. It takes effect on November 9, 2026.
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What the agency says
The U.S. Environmental Protection Agency (EPA or Agency) is approving a State Implementation Plan (SIP) revision submitted by the Commonwealth of Kentucky through the Energy and Environment Cabinet (Cabinet) on behalf of the Louisville Metro Air Pollution Control District (District) via a letter dated June 3, 2024. The SIP revision consists of a Limited Maintenance Plan (LMP) for the Kentucky portion of the bi-state Louisville, Kentucky-Indiana 1997 8-hour ozone maintenance area (the "bi-state Louisville Area"). The Kentucky portion of the bi-state Louisville Area is comprised of Bullitt, Jefferson, and Oldham Counties in Kentucky (the "Louisville Area"). The EPA is approving the Louisville Area's LMP because it provides for the maintenance of the 1997 8-hour ozone National Ambient Air Quality Standards (NAAQS) within the bi-state Louisville Area through the end of the second 10-year portion of the maintenance period. The effect of this action is to make certain commitments related to maintenance of the 1997 8-hour ozone NAAQS in the Louisville Area federally enforceable as part of the Kentucky SIP.
Key facts
- Document number
- 2026-20641
- Type
- Final rule
- Action
- Final rule
- Agency
- Environmental Protection Agency
- Published
- October 8, 2026
- Takes effect
- November 9, 2026
- Dates
- This rule is effective November 9, 2026.
- Docket
- EPA-R04-OAR-2024-0295; FRL-13322-02-R4
- Code of Federal Regulations
- 40 CFR 52
- Topics
- Air pollution control; Environmental protection; Incorporation by reference; Intergovernmental relations; Ozone; Reporting and recordkeeping requirements; Volatile organic compounds
- Pages
- 5
Other documents from the Environmental Protection Agency
Everything from the Environmental Protection Agency · Rules on air pollution control · Rules on environmental protection · Rules on incorporation by reference · Published in October 2026
Read from the Federal Register API, last updated 2026-10-24. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.