Download or read book Methods of Determining the Long term Fate of Dredged Material for Aquatic Disposal Sites written by and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Methods of Determining the Long term Fate of Dredge Material for Aquatic Disposal Sites written by and published by . This book was released on 1990 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dredging Operations Technical Support Program Methods of Determining the Long Term Fate of Dredged Material for Aquatic Disposal Sites written by Mark S. Dortch and published by . This book was released on 1990 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: To manage an open-water dredged material disposal site, it is essential to know the physical capacity of the site (i.e., how much material should be dumped at the site and what the capability is of the material to remain onsite under various environmental conditions of waves and currents). Long-term management of aquatic disposal sites also requires an understanding of how much area the disposal mound encompasses, when the mound encroaches on the site boundaries, how much material leaves the site, and perhaps where the material ultimately goes. The purpose of this report is to identify methods that can be used to develop information concerning the long-term fate of dredged material disposed at aquatic sites. The methods are broken into two major categories: (a) methods of analysis for mound resuspension and dynamics and (b) methods of analysis for transport and redeposition of mound material. For each of these two categories, four basic approaches are reviewed: (a) steady-state analytical methods; (b) time- and rate-dependent analytical methods; (c) physical and numerical modeling; and (d) measurements through field and laboratory studies. (sdw).
Download or read book Methods of Determining the Long term Fate of Dredged Material for Aquatic Disposal Sites written by and published by . This book was released on 1990 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessment of the Factors Controlling the Long term Fate of Dredged Material Deposited in Unconfined Subaqueous Disposal Areas written by David R. Basco and published by . This book was released on 1974 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book LTFATE written by and published by . This book was released on 1995 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Dredged Material Disposed in Open Water written by and published by . This book was released on 1996 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes research conducted by the Dredging Research Program, Technical Area 1 Dredged Materials Disposed in Open Water.' Goals of Technical Area 1 were as follows: Analysis of (a) To establish a better understanding of boundary-layer properties of both cohesive and noncohesive materials and develop short- and long-term numerical approximation for determining the fate and disposition of dredged materials disposed in open water. (b) To develop field instrumentation to track suspended sediment plumes and monitor nearshore berms and disposal mounds for resuspension and migration of the dredged material. Fundamental knowledge on the boundary-layer flow properties of both cohesive and noncohesive materials was used to better formulate numerical expressions describing movement of these materials under wave and current conditions. The plume measurement system PLUMES was developed to track suspended-sediment plumes in open waters. The acoustic resuspension and measurement system ARMS was developed to determine resuspension from existing or proposed open-water disposal sites. Short- and long-term fate numerical models (STFATE and LTFATE) were developed for simulating placement of dredged materials at, resuspension of, and migration from open-water disposal sites. ADCIRC was formulated for generating long time periods of hydrodynamic circulation for very large computational domains, and generated databases of tidal constituents and tropical storms for U.S. coastlines. Instrumentation and techniques for monitoring nearshore berms and mounds placed as feeder beach nourishment material in the littoral zone were developed.
Download or read book Long term Management Strategy LTMS for Dredged Material written by Norman R. Francingues and published by . This book was released on 1992 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Long term Release of Contaminants from Dredged Material written by James M. Brannon and published by . This book was released on 1978 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: Man's activities in the Nation's coastal zones and waterways have served to contaminate sediments in these areas, generating concern that dredging and disposal may exert adverse effects on water quality and aquatic organisms. The long-term effects of dredged material on water quality at the disposal site remain an area of particular concern. To study the magnitude and predictability of long-term releases from dredged material, an 8-month aerobic leaching study was conducted in the laboratory. A large number of sediments (32) representing broad geographical and pollutional variation were used to ensure wide applicability of study results. Under the aerobic chemical conditions likely to prevail at aquatic disposal sites, total organic carbon, orthophosphate-P, and zinc exhibited the most consistent net releases to the water column. Very little net mass release of mercury (Hg), lead (Pb), cadmium (Cd), or arsenic (As) into the water column was observed regardless of the composition of the sediments. Worst case evaluation of the potential effects of contaminant releases, conducted by comparing results of this study with the most stringent water quality criteria available, indicated that sediments used in this study would not be expected to cause significant long-term water quality problems.
Download or read book LTFATE written by and published by . This book was released on 1995 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Guidelines for Aquatic Nearshore and Upland Confined Disposal Facilities for Contaminated Dredged Material written by Environmental Commission. Working Group 5 and published by PIANC. This book was released on 2002 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessment of the Factors Controlling the Long term Fate of Dredged Material Deposited in Unconfined Subaqueous Disposal Areas written by David Basco (R.) and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The distribution or dispersion of unconfined, subaqueous dredged material has received much attention for reasons of economy and pollution. If polluted it may affect the fauna and flora of surrounding areas. On the other hand, the material may quickly return to the dredged channel and require frequent maintenance dredging, proving the use of diked disposal areas to be more economical. The major objective of this literature study was to assess the factors that affect the long-term fate of dredged material deposited in unconfined, subaqueous disposal areas. These fundamental factors are thoroughly discussed in the report. In addition, the present knowledge of various methods and their limitations for determining dredged material dispersion were reviewed.
Download or read book Evaluating Environmental Effects of Dredged Material Management Alternatives written by and published by . This book was released on 1992 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Environmental Impacts of Dredged Material Disposal written by Mary Ellen Harris and published by . This book was released on 1981 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Dredged Material Pollution Potential written by James M. Brannon and published by . This book was released on 1978 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1990 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessment of the Factors Controlling the Long term Fate of Dredged Material Deposited in Unconfined Subaqueous Disposal Areas written by David Basco (R.) and published by . This book was released on 1974 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The distribution or dispersion of unconfined, subaqueous dredged material has received much attention for reasons of economy and pollution. If polluted it may affect the fauna and flora of surrounding areas. On the other hand, the material may quickly return to the dredged channel and require frequent maintenance dredging, proving the use of diked disposal areas to be more economical. The major objective of this literature study was to assess the factors that affect the long-term fate of dredged material deposited in unconfined, subaqueous disposal areas. These fundamental factors are thoroughly discussed in the report. In addition, the present knowledge of various methods and their limitations for determining dredged material dispersion were reviewed.
