The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision submitted by the State of Connecticut. The regulations adopted by Connecticut include the California Low Emission Vehicle (LEV) II light-duty motor vehicle emission standards effective in model year 2008, the California LEV II medium-duty vehicle standards effective in model year 2009, and greenhouse gas emission standards for light-duty motor vehicles and medium-duty vehicles effective with model year 2009. The Connecticut LEV regulation submitted also includes a zero emission vehicle (ZEV) provision, as well as emission control label and environmental performance label requirements. Connecticut has adopted these revisions to reduce emissions of volatile organic compounds (VOC) and nitrogen oxides (NO<INF>X</INF>) in accordance with the requirements of the Clean Air Act (CAA), as well as to reduce greenhouse gases (carbon dioxide, methane, nitrous oxide, and hydrofluorocarbons). In addition, Connecticut has worked to ensure that their program is identical to California's, as required by the CAA. The intended effect of this action is to approve the Connecticut LEV II program. In addition, EPA is approving the removal of the definition and regulation of "composite motor vehicles" from the Connecticut's SIP-approved vehicle inspection and maintenance program. These actions are being taken in accordance with the CAA.