Aquatic Dredged Material Disposal Impacts

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Aquatic Dredged Material Disposal Impacts

Thomas D. Wright
Aquatic Dredged Material Disposal Impacts Book PDF

Author : Thomas D. Wright
Publisher : Unknown
Page : 66 pages
File Size : 43,6 Mb
Release : 1978
Category : Aquatic ecology
ISBN : UCR:31210024931592

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Aquatic Dredged Material Disposal Impacts by Thomas D. Wright Pdf

Under the Dredged Material Research Program (DMRP), studies of the impact of dredged material disposal in open-water systems (Aquatic Disposal Field Investigations (ADFI)) were conducted at five locations: New York (Eatons Neck), Ohio (Ashtabula River), Texas (Galveston), Oregon (Columbia River), and Washington (Duwamish Waterway). The sites were representative of a variety of disposal practices, dredged materials, and aquatic habitats. Disposal did not occur during the course of the Eatons Neck ADFI but did at the other four sites. This report summarizes the findings of the investigations.

Environmental Guidelines for Aquatic, Nearshore and Upland Confined Disposal Facilities for Contaminated Dredged Material

Environmental Commission. Working Group 5
Environmental Guidelines for Aquatic Nearshore and Upland Confined Disposal Facilities for Contaminated Dredged Material Book PDF

Author : Environmental Commission. Working Group 5
Publisher : PIANC
Page : 52 pages
File Size : 49,9 Mb
Release : 2002
Category : Dredging spoil
ISBN : 9782872231348

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Environmental Guidelines for Aquatic, Nearshore and Upland Confined Disposal Facilities for Contaminated Dredged Material by Environmental Commission. Working Group 5 Pdf

Water Quality Impacts of Aquatic Dredged Material Disposal (laboratory Investigations)

Sterling A. Burks,Robert M. Engler
Water Quality Impacts of Aquatic Dredged Material Disposal laboratory Investigations Book PDF

Author : Sterling A. Burks,Robert M. Engler
Publisher : Unknown
Page : 54 pages
File Size : 54,6 Mb
Release : 1978
Category : Aquatic ecology
ISBN : UOM:39015095028059

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Water Quality Impacts of Aquatic Dredged Material Disposal (laboratory Investigations) by Sterling A. Burks,Robert M. Engler Pdf

Natural processes in aquatic ecosystmes tend to concentrate heavy metals, chlorinated hydrocarbons, pesticides, nutrients, and oil and grease compounds in bottom sediments. These contaminants are not very soluble in water under the conidtions that normally occur in oxygenated uncontaminated surface waters. Therefore, introducing high concentrations of these contaminants into aquatic ecosystems will generally result in an equilibrium condition where most of the contaminant will be sorbed (adsorbed and absorbed) by suspended particulate material and then deposited on the bottom when the suspended material settles. The time necessary to achieve the equilibrium condition depends upon the physicochemical conditions in the aquatic system and the quantity and duration of the contaminant introduction. Dredged Material Research Program (DMRP) reports and other literature indicate that dredging operations have the potential to temporarily mobilize or release some contaminants from the sediments. During disposal operations, the anaerobic sediments are mixed with aerated surface water, and a complex chemical interaction occurs. Heavy metals, such as cadmium, copper, chromium, lead, and zinc, are stabilized in the oxygen-free sediments as insoluble sulfides.

Effects of Dredging and Disposal on Aquatic Organisms

Nina D. Hirsch,Louis H. DiSalvo,Richard Peddicord,Richard K. Peddicord
Effects of Dredging and Disposal on Aquatic Organisms Book PDF

Author : Nina D. Hirsch,Louis H. DiSalvo,Richard Peddicord,Richard K. Peddicord
Publisher : Unknown
Page : 52 pages
File Size : 55,7 Mb
Release : 1978
Category : Dredging
ISBN : UCR:31210024936518

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Effects of Dredging and Disposal on Aquatic Organisms by Nina D. Hirsch,Louis H. DiSalvo,Richard Peddicord,Richard K. Peddicord Pdf

This report synthesizes data from the U.S. Army Corps of Engineers' Dredged Material Research Program, Task 1D. Task 1D consisted of six research projects (work units) that investigated the direct and indirect effects of dredging and disposal of dredged material on aquatic organisms. Determination of potential environmental effects of dredging and disposal, in spite of research conducted to date, is still in preliminary stages due to the multiplicity of variables involved. Bioavailability of sediment-sorbed heavy metals is low. Release of sediment-associated heavy metals and their uptake into organism tissues have been found to be the exception rather than the rule. Research results suggest that there is little or no correlation between the bulk sediment content of heavy metals and environmental impact. Oil and grease residues, like the heavy metals, seem tightly bound to sediment particles and accumulation of these residues by organisms is minimal. The diversity of variables that have the potential for direct and indirect effects on acquatic life argues for an integrated, whole-sediment bioassay, using sensitive test organisms. Such a procedure is currently under development by the Environmental Protection Agency and the Corps of Engineers and should uncover site-specific toxicity problems which can be addressed by appropriate chemical testing and biological evaluation of dredged material.

Evaluating Environmental Effects of Dredged Material Management Alternatives

Anonim
Evaluating Environmental Effects of Dredged Material Management Alternatives Book PDF

Author : Anonim
Publisher : Unknown
Page : 112 pages
File Size : 48,6 Mb
Release : 1992
Category : Dredging spoil
ISBN : UCR:31210024931071

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Evaluating Environmental Effects of Dredged Material Management Alternatives by Anonim Pdf

This document is intended to serve as a consistent "roadmap" for U.S. Army Corps of Engineers and U.S. Environmental Protection Agency personnel in evaluating the environmental acceptability of dredged amterial management alternatives. Specifically, its major objectives are to provide: A general technical framwork for evaluating the environmental acceptability of dredged material management, alternatives (open-water disposal, confined (diked) disposal, and beneficial uses). Additional technical guidance to augment present implementation and testing manuals for addressing the environmental acceptability of available management options for the discharge of dredged material in both ope water and confined sites. Enhanced consistency and coordination in USAC/EPA decision making in accordance with Federal environmantl statutes regulating dredged material management.