. "The senator and representative who represent the town shall serve as ex-officio members. ???GRC site???, the area of state-owned land located in the town of Shrewsbury known as the Irving A. Glavin Regional Center at Shrewsbury, together with the buildings and improvements thereon and the rights, easements and other interests appurtenant thereto. ???Plan???, a reuse plan prepared by the division i" . . . . .