The aquatic disposal field investigation initiated in Elliott Bay, Puget Sound, WA, in February 1976, was designed to evaluate the ecological effects of open-water disposal of dredged material. The experimental disposal site was located at a depth of 60 m in marine estuary with generally weak circulation. Approximately 114,000 m3 of dredged material contaminated with polychlorinated biphenyls (PCBs) were dumped at the site from split-hull barges. The material presented in this paper is limited to a discussion of PCB impacts. It imcludes (a) a summary of results from the studies conducted between 1976 and 1977 to assess short-term impacts during and after the disposal of PCB contaminated sediments at the Elliott Bay disposal site; (b) a presentation of preliminary results from the continuation studies initiated in February 1979 to determine long-term impacts of the disposal operations. The preliminary data indicate that both dredged-material deposit and the associated PCBs appear to be stable. No major long-term impact on benthic organisms is apparent from this analysis.

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openwater disposal of dredged ecological aquatic disposal field shortterm longterm pcb impacts it dredgedmaterial deposit pcbs benthic organisms

S.P. Pavlou,W. Hom,R.N. Dexter,D.E. Anderson,E.A. Quinlan,.Release, distribution, and impacts of polychlorinated biphenyls (PCB) induced by dredged material disposal activities at a deep-water estuarine site. 7 (2),.

S.P. Pavlou,W. Hom,R.N. Dexter,D.E. Anderson,E.A. Quinlan,"Release, distribution, and impacts of polychlorinated biphenyls (PCB) induced by dredged material disposal activities at a deep-water estuarine site" 7

S.P. Pavlou,W. Hom,R.N. Dexter,D.E. Anderson,E.A. Quinlan,"Release, distribution, and impacts of polychlorinated biphenyls (PCB) induced by dredged material disposal activities at a deep-water estuarine site"