Proposed rule · 2025-10548

Air Plan Approval; West Virginia; 2024 Amendments to West Virginia's Ambient Air Quality Standards

The Environmental Protection Agency (EPA) is proposing to approve a state implementation plan (SIP) revision submitted by the State of West Virginia. This revision updates West Virginia's incorporation by reference (IBR) of EPA's national ambient air quality standards (NAAQS) and the associated monitoring reference and equivalent methods. This action is being taken under the Clean Air Act (CAA).