14 and 15 May 2013
     The Westin Arlington Gateway (Conference rate $224/night.  Deadline to register 26 April 2013)
     801 North Glebe Road
     Arlington, VA 22203    
     Phone reservations: 703-717-6200 (when calling, refer to "NSF Expeditions PI Meeting")
     Website reservations: https:/www.starwoodmeeting.com/StarGroupsWeb/res?id=1302285244&key=99D3F
     Map:  http://www.westinarlingtongateway.com/       

     16 May 2013
     The National Science Foundation (walking distance from the Westin)
     Stafford II 555 and The Atrium
     4201 Wilson Blvd
     Arlington VA 22230