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:

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.

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:

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:

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:

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:

Download or read book Use of Sediment Quality Guidelines and Related Tools for the Assessment of Contaminated Sediments written by Richard J. Wenning and published by SETAC. This book was released on 2005 with total page 818 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.

Download or read book Methods for Assessing the Toxicity of Sediment associated Contaminants with Estuarine and Marine Amphipods written by and published by . This book was released on 1994 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sediment Toxicity Assessment written by G.Allen Burton and published by CRC Press. This book was released on 2018-05-04 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sediment Toxicity Assessment provides the latest information regarding how to evaluate sediment contamination and its effects on aquatic ecosystems. It presents an integrated ecosystem approach by detailing effective assessment methods, considerations, and effects to each major component of marine and freshwater systems, including the benthos, plankton, and fish communities. The approaches emphasize defining habitat conditions (physical and chemical), toxicant bioavailability, factors influencing toxicity (lab and field), biomarkers, acute and chronic toxicity, study design, collection methods, and EPA management strategies. The book also explains how to integrate the assessments. Sediment Toxicity Assessment will be useful to to all environmental managers, environmental scientists, ecotoxicologists, environmental regulators, aquatic ecologists, environmental contractors and consultants, instructors, students, conservation commissions, and environmental activist organizations.

Download or read book An Assessment of Metal Release from Contaminated Estuarine Sediment Using Batch and Column Leaching Tests written by Christopher James Tsiatsios and published by . This book was released on 2005 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Environmental Effects of Dredging Determination of Total Organic Carbon in Estuarine Leachate Samples written by and published by . This book was released on 1995 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: Distinct differences in leaching characteristics of fresh-water and estuarine sediments have been observed and documented (Brannon and others 1991; Lee and others 1993a, b, c; Myers and Brannon 1993). Anaerobic leaching of fresh-water sediments with distilled-deionized (DDI) water produces aqueous leachate samples relatively free of microparticulates (Brannon, Myers, and Price 1992). Conventional liquid injection procedures (American Public Health Association 1989, U.S. Environmental Protection Agency 1986) for TOC determination are analytically sound for these leachate samples. Column leaching of estuarine sediments with DDI water initially produces microparficulate-free leachate samples. After leaching several pore volumes, leachate samples containing nonfilterable colloids and nonsettleable microparticulate matter are obtained (Lee and others 1993a, b, c). Analysis of these samples for metals and organic species using standard procedures presents no major obstacles. However, analysis of these samples for TOC using standard techniques has been subject to error due to the nonhomogeneity of the samples and the dispersion of TOC in both water and colloid phases. pg2. JMD.

Download or read book Contaminated Sediments written by Masaharu Fukue and published by ASTM International. This book was released on 2006 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.

Download or read book Assessment and Remediation of Contaminated Sediments written by Danny Reible and published by NATO Science Series: IV. This book was released on 2006-08-08 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this text, drawn from presentations and discussion at a May 2005 NATO Advanced Research Workshop, current approaches to the assessment and remediation of contaminated sediments are discussed with emphasis on in-situ management. The text addresses physical, chemical and biological approaches for the assessment and remediation of sediments. The development of regulatory and strategic approaches is discussed with emphasis on the potential for biological remediation in the management of contaminated sediments.

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 Sediment Quality Assessment written by Graeme Batley and published by CSIRO PUBLISHING. This book was released on 2016-02-01 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contaminated sediments represent an ongoing threat to the health of aquatic ecosystems. The assessment of sediment quality is, therefore, an important concern for environmental regulators. Sediment quality guidelines are now well established in regulatory frameworks worldwide; however, practical guidance that covers all of the key aspects of sediment quality assessment is not readily available. In 2005, CSIRO published its highly cited Handbook for Sediment Quality Assessment. In the ensuing period, the science has advanced considerably. This practical guide is a revised and much expanded second edition, which will be a valuable tool for environmental practitioners. Written by experts in the field, it provides coverage of: sediment sampling; sample preparation; chemical analysis; ecotoxicology; bioaccumulation; biomarkers; and ecological assessment. In addition, detailed appendices describe protocols for many of the tests to be used.