The Environmental Protection Agency (EPA) is approving one aspect (the remaining portion) of a State Implementation Plan (SIP) revision submitted on May 30, 2013 by the State of Connecticut. This revision addresses the interstate transport requirements of the Clean Air Act (CAA), referred to as the good neighbor provision, with respect to the 2010 sulfur dioxide (SO<INF>2</INF>) national ambient air quality standard (NAAQS). This action approves Connecticut's demonstration that the State is meeting its obligations regarding the transport of SO<INF>2</INF> emissions into other states. This action is being taken under the Clean Air Act.