Air Quality State Implementation Plans; Approvals and Promulgations: Kentucky; Campbell-Clermont Area Maintenance Plan for the 2010 1-Hour SO2 NAAQS

What it does

• •EPA proposes to approve Kentucky's State Implementation Plan (SIP) revision submitted February 20, 2025, for a second 10-year maintenance plan covering the Kentucky portion of the Campbell-Clermont maintenance area.
• •The approval establishes maintenance requirements for the 2010 1-hour sulfur dioxide (SO2) National Ambient Air Quality Standards (NAAQS) in the Campbell-Clermont, Kentucky-Ohio border region.
• •EPA determines the SIP revision is consistent with the Clean Air Act requirements.

Why it matters

• •Maintenance plans demonstrate that air quality in designated areas will remain at or below federal pollution standards for a 10-year period following initial attainment.
• •This approval allows the Campbell-Clermont area to continue operating under established SO2 emission controls and monitoring protocols.

Who is affected

• •The Commonwealth of Kentucky and entities operating in the Kentucky portion of the Campbell-Clermont air quality maintenance area.
• •Air quality regulators and sources subject to SO2 emissions regulations in the affected region.

What happens next

The public may submit written comments until October 26, 2026 via www.regulations.gov; if no adverse comments are received, EPA will issue a direct final rule approval; if adverse comments are received, the direct final rule will be withdrawn and addressed in a subsequent final rule.