Two public input sessions regarding the design for phase III of the Dulles South Multipurpose Center project will be held on Thursday, December 5, 2013. Phase III of the project calls for the addition of a full-service senior center. Meetings are scheduled from 2 p.m.- 4 p.m. and 6 p.m.-8 p.m. at the Dulles South Multipurpose Center, 24950 Riding Center Drive, South Riding, VA 20152.