Accession Number : ADP002398

Title :   'Capping' Procedures as an Alternative Technique to Isolate Contaminated Dredge Material in the Marine Environment,

Corporate Author : SCIENCE APPLICATIONS INC NEWPORT RI OCEAN SCIENCE AND TECHNOLOGY DIV

Personal Author(s) : Morton,R. W.

Report Date : 1983

Pagination or Media Count : 26

Abstract : Many of the major harbors on the northeast coast of the United States require extensive dredging of material that is contaminated with industrial waste products, principally heavy metals and PCBs. Because of the large quantities to be dredged, the lack of suitable upland or shore line disposal sites, and the prohibitive costs of transport beyond the continental shelf, placement of these sediments on the shelf is often the only viable method of disposal. During the past several years, attempts have been made to isolate small amounts of this material by covering it with cleaner material through specific management techniques such as dredging from the head to the mouth of an estuary, dredging docks and other hot spots during the initial phases of the operation, and combining clean material from nearby dredging operations at a common disposal point. The success of these procedures has led to the development of capping operations in which larger volumes of contaminated materials are dumped at a specific point and then covered with cleaner material as part of a carefully managed and monitored program of dredge spoil disposal.

Descriptors :   *ENVIRONMENTAL MANAGEMENT, *DREDGED MATERIALS, *CAPPING, *DISPOSAL, CHEMICAL CONTAMINATION, WATERWAYS, OVERLAYS, SEDIMENTS, WATER POLLUTION ABATEMENT

Distribution Statement : APPROVED FOR PUBLIC RELEASE