DESCRIPTION: Angular rock debris from excavation for Ted Williams Tunnel in Boston Harbor overlying natural mud sea bed. Disposed during period from June 1992 to October 1993. Rock debris covered with a veneer of mud. Growth on rocks possibly includes hydrozoans, bryozoans, worm tubes, and amphipod tubes. DEPTH(m): 86 QUAD: 7 STATION: 1117 IMAGE NAME: 28530089.jpg