The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision submitted by the State of Vermont. This revision addresses the interstate transport requirements of the Clean Air Act (CAA), referred to as the good neighbor provision, with respect to the primary 2010 sulfur dioxide (SO<INF>2</INF>) national ambient air quality standard (NAAQS). This action approves Vermont'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.