Book Description

Recent progress is presented of ocean disposal activities and studies of alternatives to ocean disposal for contaminated dredged material from the Port of New York and New Jersey. The capping studies conducted in 1980-81 and subsequent monitoring have shown that ocean disposal of dredged material in the New York Bight can be managed effectively by pin-point disposal and capping when necessary to mitigate potential adverse environmental impacts. Disposal in subaqueous borrow pits with capping has been determined to be a technically feasible and environmentally suitable disposal alternative. Environmental clearances are currently being pursued to designate a borrow pit disposal site in New York Harbor, to be reserved only for dredged material not suitable for unrestricted ocean disposal. Siting studies are still being performed for locating a large containment island, and three potential sites have been identified in the Lower Bay of New York. Beach nourishment, upland disposal, use of dredged material as sanitary landfill cover, small containment areas and wetlands stabilization with dredged material are all possible in special cases on a project-by-project basis but not on a regional basis at this time. The results of these studies have demonstrated there is continued need for ocean disposal of the majority of dredged material from the Port, that ocean disposal can be managed effectively in an environmentally sound manner, and that there are a few potential disposal alternatives for the limited volumes of dredged material which are not suitable for unrestricted ocean disposal.