Final rule · 2025-05378

Air Plan Approval; Connecticut; Approval of State Implementation Plan Requirements for the 2008 Ozone Standard

The Environmental Protection Agency (EPA) is approving State Implementation Plan (SIP) revisions submitted by the State of Connecticut. The SIP revisions are for the Connecticut portion of the New York-Northern New Jersey-Long Island, NY-NJ-CT Serious ozone nonattainment area for the 2008 ozone standard. The revisions pertain to requirements relating to reasonable further progress (RFP) plans, an enhanced vehicle emissions inspection and maintenance (I/M) program, transportation conformity, and a clean fuels for motor vehicles program. This action is being taken under the Clean Air Act.