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.