In the summer of 2000 the Mount Sinai Civic Association called on Robert Mulvey to facilitate a series of Circles of Hope dialogue and decision making sessions with the Park Committee. The purpose of the first session, which took 6 hours on a Saturday, was to review and re-affirm the 1996 hamlet study, find common ground for its implementation, and decide whether to become proactive in the furtherance of its goals, especially in regard to the establishment of a 17-acre central park. The decision was an enthusiastic "Yes."

Two 2-hour participatory design sessions with the architects and students from New York Institute of Technology produced a customized design for the park. Three 2-hour sessions explored the purpose, governance and funding of a community land trust as a vehicle to assume active stewardship in the hamlet. A decision was taken to form the Mount Sinai Heritage Trust.

The newly formed Mount Sinai Heritage Trust is the first community land trust organized to serve a Long Island suburban hamlet.