Environmental Effects of Dredging. Update: Evaluating Ecosystem Development atContaminated Dredged Material Placement Sites. Volume D-96-2

摘要

Contaminated sediment dredged from Black Rock Harbor, Connecticut, was placed inaquatic, upland, and wetland environments as part of the Field Verification Program (FVP), a 6-year joint effort of the U.S. Army Corps of Engineers and the U.S. Environmental Protection Agency (Peddicord 1988). Scientists at the U.S. Army Engineer Waterways Experiment Station (WES) conducted laboratory experiments on the sediment prior to dredging, to evaluate the potential contaminant mobility for each dredged material disposal alternative. In October 1983, WES began evaluating the colonization of plants and animals into the upland and wetland sites and the contaminant mobility of heavy metals. Results of the monitoring conducted between 1983 and 1989 were published in an earlier article (Brandon, Lee, and Simmers 1992). This article examines the colonization and contaminant mobility between 1989 and 1992. It is anticipated that ecosystem development at this site will be evaluated through September 1998.