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Leachate Testing And Evaluation For Estuarine Sediments Long Term Effects Of Dredging Operations Program
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Book Synopsis Leachate Testing and Evaluation for Estuarine Sediments. Long-Term Effects of Dredging Operations Program by :
Download or read book Leachate Testing and Evaluation for Estuarine Sediments. Long-Term Effects of Dredging Operations Program written by and published by . This book was released on 1996 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contaminated dredged material is sometimes placed in confined disposal facilities (CDFs) where the potential for movement of contaminants to groundwater and surrounding surface water by leaching is an important environmental concern. Column leach tests have been developed as laboratory-scale physical models of contaminant leaching in a CDF that include advective-dispersive and other mass transfer effects. Column leach tests are recommended for predicting leachate quality in CDFs containing estuarine dredged material leached by low-ionic strength water. Under the influence of decreasing ionic strength, contaminant release from estuarine dredged material is complicated by destabilization of the sediment colloidal system. These effects are better predicted with the column leach test described in this report than with the sequential batch leach test previously recommended for leach testing of freshwater sediments. This report describes procedures for conducting column leach tests and provides guidance on interpretation of results for estuarine sediments. Mathematical formulation of sorption descriptors that account for salt washout effect is also described.
Book Synopsis Leachate Testing and Evaluation for Estuarine Sediments by :
Download or read book Leachate Testing and Evaluation for Estuarine Sediments written by and published by . This book was released on 1996 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recent Developments in Leachate Testing and Evaluation. Long-Term Effects of Dredging Operations Program by : Tommy E. Myers
Download or read book Recent Developments in Leachate Testing and Evaluation. Long-Term Effects of Dredging Operations Program written by Tommy E. Myers and published by . This book was released on 1992 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laboratory studies of sediment leaching are being conducted at the U.S. Army Engineer Waterways Experiment Station. The purpose of these studies is to develop laboratory tests and data interpretation algorithms for predicting leachate quality in confined disposal facilities (CDFs) for dredged material. Leachate quality predictions are needed for evaluation of potential impacts of leachate seepage on foundation soils and groundwater. Two types of laboratory leach tests are under investigation, batch and column. A sequential batch leach test is being developed to provide a short-term laboratory test that describes the distribution of contaminants between aqueous and solid phases as sediment solids are exposed to increasing amounts of water. Column leach tests are being developed as laboratory-scale physical models of contaminant leaching in a CDF. Significant progress has been made in the development of the sequential batch leach test. Research has shown that sequential batch leach tests conducted at a liquids-to-solids ratio of 4 to 1 (by weight) and a shake Contaminant mobility, Dredged material, Contaminated sediment, Leach tests.
Book Synopsis Leachate Testing and Evaluation for Freshwater Sediments by : DIANE Publishing Company
Download or read book Leachate Testing and Evaluation for Freshwater Sediments written by DIANE Publishing Company and published by . This book was released on 1994-09-01 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Environmental Effects of Dredging. Technical Considerations for Application of Leach Tests to Sediments and Dredged Material by :
Download or read book Environmental Effects of Dredging. Technical Considerations for Application of Leach Tests to Sediments and Dredged Material written by and published by . This book was released on 1991 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: This note summarizes the characteristics of and differences among laboratory leach tests used for preproject evaluation of leachate quality in confined disposal facilities (CDFs) for dredged material. The guidance provided in this note is based on ongoing research conducted under the Long-Term Effects of Dredging Operations (LEDO) Program. (MM).
Book Synopsis Leachate Testing and Evaluation for Freshwater Sediments by : James M. Brannon
Download or read book Leachate Testing and Evaluation for Freshwater Sediments written by James M. Brannon and published by . This book was released on 1994 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recent Developments in Leachate Testing and Evaluation by : Tommy E. Myers
Download or read book Recent Developments in Leachate Testing and Evaluation written by Tommy E. Myers and published by . This book was released on 1992 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Leachate Testing and Evaluation for Freshwater Sediments by : James M. Brannon
Download or read book Leachate Testing and Evaluation for Freshwater Sediments written by James M. Brannon and published by . This book was released on 1994 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Long-term Release of Contaminants from Dredged Material by : James M. Brannon
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.
Book Synopsis Sediment and Dredged Material Treatment by : Peppe Bortone
Download or read book Sediment and Dredged Material Treatment written by Peppe Bortone and published by Elsevier. This book was released on 2006-11-16 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sediment and Dredged Material Treatment forms the second volume in the SEDNET mini-series, Sustainable Management of Sediment Resources. The volume asks "How can you achieve sustainable sediment treatment?". In fact, before this question can be answered, many steps have to be considered beforehand. This book tackles the questions and issues which arise when looking at the various steps involved. This volume is applicable to a wide audience, from students at the graduate level, to experienced researchers and laboratory personnel in academia, industry and government. This volume also available as part of a 4-volume set, ISBN 0444519599. Discount price for set purchase. Gives a broad overview on sediment treatment with a European perspective Suitable for those new to sediment treatment as well as specialists in the field Provides an overview on the costs involved in sediment treatment
Book Synopsis Long-term Effects of Dredging Operations Program by : Thomas M. Dillon
Download or read book Long-term Effects of Dredging Operations Program written by Thomas M. Dillon and published by . This book was released on 1994 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Long-Term Effects of Dredging Operations Program. Development of a Chronic Sublethal Bioassay for Evaluating Contaminated Sediment with the Marine Polychaete Worm Nereis (Neanthes) Arenaceodentata by :
Download or read book Long-Term Effects of Dredging Operations Program. Development of a Chronic Sublethal Bioassay for Evaluating Contaminated Sediment with the Marine Polychaete Worm Nereis (Neanthes) Arenaceodentata written by and published by . This book was released on 1994 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: Development of a chronic sublethal sediment bioassay with the polychaete Nereis (Neathes) arenaceodentata is described. The sublethal test end point was estimated individual somatic growth rate (milligrams dry weight per day). The test was initiated with 2- to 3-week-old post-emergent juvenile worms and continued for 28 days. The potential bias due to selected nontreatment factors on polychaete survival and growth was evaluated. For example, grain size had no significant effect, whereas the number of worms placed in each exposure vessel was critical. Direct transfer from 30% seawater to salinities less than or equal 15% had a highly significant and adverse effect on survival and growth. Both survival and growth of juvenile worms may be adversely affected if test conditions involve exposures to greater than or equal 0.7 mg/L un-ionized ammonia or greater than or equal 5 mg/L hydrogen sulfide. Survival of juvenile worms to concentrations of the reference toxicant, cadmium chloride, approximating the 96-hr LC50 (5 mg/L) was used as a quality control measure. Results are expressed in control chart format analogous to methods used in analytical chemistry. Chronic, Neanthes, Sublethal, Growth, Sediment.
Book Synopsis Environmental Effects of Dredging, Initial Comparisons of Six Assays for the Assessment of Sediment Genotoxicity by :
Download or read book Environmental Effects of Dredging, Initial Comparisons of Six Assays for the Assessment of Sediment Genotoxicity written by and published by . This book was released on 1995 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: This technical note reports and compares initial results of six genotoxicity bioassays applied to dredged sediments and describes progress toward development of a testing protocol to aid in regulatory decisionmaking when genotoxic chemicals are an issue of concern. The Long-term Effects of Dredging Operations Program work unit Genotoxicity of contaminated Dredged Material was initiated in fiscal year 1990 to develop methods for assessing the genotoxic potential of dredged sediments. The impetus driving this new research and development effort was specific regulatory language in section 103 of the Ocean Dumping Act (Marine Protection, Research, and Sanctuaries Act (MPRsA) of 1972) prohibiting the open-water discharge of mutagenic, carcinogenic, or teratogenic substances in other than trace amounts, and language less specific but of similar intent in section 404 of the Clean Water Act (CWA). pg1. JMD.
Author :International Navigation Association. Environmental Commission. Working Group 10 Publisher :PIANC ISBN 13 :2872231609 Total Pages :48 pages Book Rating :4.8/5 (722 download)
Book Synopsis Environmental Risk Assessment of Dredging and Disposal Operations by : International Navigation Association. Environmental Commission. Working Group 10
Download or read book Environmental Risk Assessment of Dredging and Disposal Operations written by International Navigation Association. Environmental Commission. Working Group 10 and published by PIANC. This book was released on 2006 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluating Environmental Effects of Dredged Material Management Alternatives by :
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.
Book Synopsis Environmental Effects of Dredging. Chronic Sublethal Sediment Bioassays for the Regulatory Evaluation of Marine and Estuarine Dredged Material: Proceedings of a Workshop by :
Download or read book Environmental Effects of Dredging. Chronic Sublethal Sediment Bioassays for the Regulatory Evaluation of Marine and Estuarine Dredged Material: Proceedings of a Workshop written by and published by . This book was released on 1990 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: This note summarizes the proceedings of a workshop held April 3-5,1990, at the US Army Engineer Waterways Experiment Station, Vicksburg, MS. The purpose of the workshop was to solicit input from technical experts regarding techniques for evaluating the chronic sublethal effects of sediments on aquatic biota. This input will be used to help direct subsequent research and development by the US Army Corps of Engineers.-BKA.
Book Synopsis Sediment Classification Methods Compendium by : United States. Environmental Protection Agency. Sediment Oversight Technical Committee
Download or read book Sediment Classification Methods Compendium written by United States. Environmental Protection Agency. Sediment Oversight Technical Committee and published by . This book was released on 1992 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document is a compendium of scientifically valid and accepted methods that can be used to assess sediment quality and predict ecological impacts...the intent here is to provide the most useful overall measures or predictors of ecological impacts currently in use rather than procedures that may have limited application outside of a particular regulatory framework... parag The information provided in the compendium on the relative strengths and weaknesses of the different assessment methods can provide assistance in selecting the appropriate methods.
