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Author: James M. Brannon Publisher: ISBN: Category : Aquatic ecology Languages : en Pages : 48
Book Description
This report synthesizes data from the U.S. Army Engineer Waterways Experiment Station, Dredged Material Research Program (DMRP), Task 1E. Task 1E consisted of seven research projects (work units) that investigated the pollution properties of dredged material and procedures for determining their potential for effect on water quality and aquatic organisms. The short-term impact of dredged material on water quality and aquatic organisms is related to the concentration of chemically mobile, readily available contaminants rather than the total concentration. The elutriate Test, which measures concentrations of contaminants released from dredged material, can be used to evaluate short-term impacts on water quality. Longer term impacts of dredged material on water quality have generally been slight and can be evaluated by means of the Elutriate Test and analysis of the mobile forms of sediment contaminants. No significant long-term increase in water column contaminant concentrations has been observed at any aquatic disposal field site. The greatest hazard of dredged material disposal is the potential effect of the material on benthic organisms. Most dredged material has not proven particularly toxic. Some dredged material has not proven particularly toxic. Some dredged material, however, can be extremely toxic or of unknown toxicological character. Benthic bioassay procedures are now available which can identify this toxic dredged material.
Author: United States. Army. Corps of Engineers Publisher: ISBN: Category : Aquatic ecology Languages : en Pages : 39
Book Description
The purpose of this manual is to present specific criteria and guidelines for evaluating and projecting the pollution potential of dredged material disposal in open water.
Author: James M. Brannon Publisher: ISBN: Category : Aquatic ecology Languages : en Pages : 48
Book Description
This report synthesizes data from the U.S. Army Engineer Waterways Experiment Station, Dredged Material Research Program (DMRP), Task 1E. Task 1E consisted of seven research projects (work units) that investigated the pollution properties of dredged material and procedures for determining their potential for effect on water quality and aquatic organisms. The short-term impact of dredged material on water quality and aquatic organisms is related to the concentration of chemically mobile, readily available contaminants rather than the total concentration. The elutriate Test, which measures concentrations of contaminants released from dredged material, can be used to evaluate short-term impacts on water quality. Longer term impacts of dredged material on water quality have generally been slight and can be evaluated by means of the Elutriate Test and analysis of the mobile forms of sediment contaminants. No significant long-term increase in water column contaminant concentrations has been observed at any aquatic disposal field site. The greatest hazard of dredged material disposal is the potential effect of the material on benthic organisms. Most dredged material has not proven particularly toxic. Some dredged material has not proven particularly toxic. Some dredged material, however, can be extremely toxic or of unknown toxicological character. Benthic bioassay procedures are now available which can identify this toxic dredged material.
Author: C. Fred Lee Publisher: ISBN: Category : Languages : en Pages : 170
Book Description
An extensive literature review was made as a part of an effort to establish relationships between the presence of various contaminants within sediments and the effects of sediment dredging and disposal on water quality and aquatic organisms. The review revealed that there is little or no evidence that a relation exists between bulk-sediment composition and pollution tendencies of dredged sediment. Use of criteria for dredged material disposal that are based on parameters normally used in evaluating environmental impact of domestic and industrial waste-waters is unrealistic because it is considered unlikely that there is a relation between environmental impact of a particular dredged sediment and a particular numerical value for any of these parameters in sediment. The use of a standard Elutriate Test to determine pollution potential of dredged material is superior to bulk analysis because the test recognizes that all chemicals in sediment are not equally available to aquatic organisms. It is concluded that dredged material disposal criteria should be based on a time-concentration-toxicity relationship for each chemical constituent, which could be developed from short-term bioassays with selected organisms. (Modified author abstract).
Author: Wim Salomons Publisher: Springer Science & Business Media ISBN: 3642613624 Category : Science Languages : en Pages : 434
Book Description
Dredged Material and Mine Tailings are two of the same thing once they are deposited on land: they must be safe-guarded, wash-out must be prevented, and they must be protected by a plantcover. This comprehensive two-volume treatise covers both important aspects of their management: Environmental Management of Solid Waste turns to the practical applications, such as prediction, restoration and management, while in Chemistry and Biology of Solid Waste the principles and assessment are scientifically studied and discussed. Previously, dredged material was a commodity, it could be sold as soil, e. g. to gardeners. In the meantime, dredged material from the North Sea (e.g. the Rotterdam or Amsterdam harbor) must be treated as hazardous waste. Many environmentalists, managers and companies do not know how to solve the inherent problems. This new work deals with the chemical, physical and biological principles; the biological and geochemical assessment; the prediction of effects and treatment; and finally, with restoration and revegetation. It is written by many leading scientists in the various fields, and will prove invaluable for managers and politicians who are concerned with the present environmental situation.
Author: Publisher: ISBN: Category : Languages : en Pages : 337
Book Description
This manual is a resource document providing technical guidance for evaluation of potential contaminant migration pathways from confined disposal facilities (CDFs). Disposal of dredged material in CDFs is one of the most commonly considered alternatives for material deemed unsuitable for conventional open water disposal because of potential contaminant impacts and is also an option commonly considered for disposal of contaminated sediments dredged for purposes of sediment remediation. If contaminated sediments are placed in a CDF, consideration of pathways for migration of contaminants from the site and potential contaminant impacts may be required. A suite of evaluation procedures and laboratory test procedures has been developed to evaluate CDF contaminant pathways and is presented in detail in this manual. A tiered testing and evaluation approach is used. The Tier I evaluation determines the need for pathway evaluations, pathways of concern, contaminants of concern, and which pathways require more detailed evaluations based on existing information. Tier II evaluations consist of determining the need for management actions derived from very conservative techniques that use the chemical, physical, and biological characteristics of the dredged material and basic information about the CDF. Tier III focuses primarily on definitive evaluations, including pathway testing. Tier IV, which should rarely be needed for navigation projects, includes formal quantitative risk assessment designed to answer specific, well-defined questions.
Author: James M. Brannon
Author: United States. Army. Corps of Engineers
Author: James M. Brannon
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Author: C. Fred Lee
Author: Wim Salomons
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Author: United States. Army. Corps of Engineers. New York District