Sediment Dredging at Superfund Megasites

Sediment Dredging at Superfund Megasites

Author: National Research Council

Publisher: National Academies Press

Published: 2007-10-30

Total Pages: 316

ISBN-13: 0309134102

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Some of the nation's estuaries, lakes and other water bodies contain contaminated sediments that can adversely affect fish and wildlife and may then find their way into people's diets. Dredging is one of the few options available for attempting to clean up contaminated sediments, but it can uncover and re-suspend buried contaminants, creating additional exposures for wildlife and people. At the request of Congress, EPA asked the National Research Council (NRC) to evaluate dredging as a cleanup technique. The book finds that, based on a review of available evidence, dredging's ability to decrease environmental and health risks is still an open question. Analysis of pre-dredging and post-dredging at about 20 sites found a wide range of outcomes in terms of surface sediment concentrations of contaminants: some sites showed increases, some no change, and some decreases in concentrations. Evaluating the potential long-term benefits of dredging will require that the U.S. Environmental Protection Agency step up monitoring activities before, during and after individual cleanups to determine whether it is working there and what combinations of techniques are most effective.


Remediation in Medical Education

Remediation in Medical Education

Author: Adina Kalet

Publisher: Springer Science & Business Media

Published: 2013-11-26

Total Pages: 386

ISBN-13: 1461490251

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Remediation in medical education is the act of facilitating a correction for trainees who started out on the journey toward becoming excellent physicians but have moved off course. This book offers an evidence-based and practical approach to the identification and remediation of medical trainees who are unable to perform to standards. As assessment of clinical competence and professionalism has become more sophisticated and ubiquitous, medical educators increasingly face the challenge of implementing effective and respectful means to work with trainees who do not yet meet expectations of the profession and society. Remediation in Medical Education: A Mid-Course Correction describes practical stepwise approaches to remediate struggling learners in fundamental medical competencies; discusses methods used to define competencies and the science underlying the fundamental shift in the delivery and assessment of medical education; explores themes that provide context for remediation, including professional identity formation and moral reasoning, verbal and nonverbal learning disabilities, attention deficit disorders in high-functioning individuals, diversity, and educational and psychiatric topics; and reviews system issues involved in remediation, including policy and leadership challenges and faculty development.


Remediation of Former Manufactured Gas Plants and Other Coal-Tar Sites

Remediation of Former Manufactured Gas Plants and Other Coal-Tar Sites

Author: Allen W. Hatheway

Publisher: CRC Press

Published: 2011-07-27

Total Pages: 1400

ISBN-13: 0824791061

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Winner of the 2013 Claire P. Holdredge Awardee for Remediation of Former Manufactured Gas Plants and Other Coal-Tar Sites. This award, first established in 1962 by the Association of Environmental and Engineering Geologists, is named in honor of Claire P. Holdredge, a founding member and the first President of the Association. The award is presented for a publication by an AEG Member(s) within the 5 previous years that is adjudged to be an outstanding contribution to the Engineering Geology profession. Remediation of Former Manufactured Gas Plants and Other Coal-Tar Sites is geared toward environmental professionals who want to design and implement gasworks remediation strategies that offer the greatest chance to successfully protect the public. Exploring the bases for selecting remedial alternatives to adequately address today’s environmental wounds, this compendium of essential knowledge combines historic and modern scientific data and technology with common sense and empirical lore passed down from past generations of gas professionals, a group that is now all but extinct. Most of the general population does not have a sufficient understanding of remediation needs. Unfortunately, there seems to be a similar lack of knowledge among some environmental professionals whose job it is to protect the public from the health threats associated with coal tar. Pitfalls in remediation are common and represent a significant risk to the public, especially when processes are based on inaccurate assumptions. This book sifts through the existing scholarship from around the developed world to present the necessary evaluation factors used in effective remediation. Almost encyclopedic in scope, it offers 265 separate tables with checklists, hard data facts, and associations to help readers define site-specific gas plant conditions. It also includes a plethora of photographs and historic drawings, as well as an extensive glossary that is indispensible for understanding potential and actual gas plant contamination. Useful for engineers, scientists, regulators, public officials, historians, and journalists among others, this book is intended for those who conduct remediation, as well as those involved in review and oversight. Its goal is to bring users closer to safely reclaiming land and reviving old coal gasworks sites in ways that ultimately will be sustainable for the public interest.


Premediation: Affect and Mediality After 9/11

Premediation: Affect and Mediality After 9/11

Author: R. Grusin

Publisher: Springer

Published: 2010-04-09

Total Pages: 208

ISBN-13: 0230275273

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In an era of heightened securitization, print, televisual and networked media have become obsessed with the 'pre-mediation' of future events. In response to the shock of 9/11, socially networked US and global media worked to pre-mediate collective affects of anticipation and connectivity, while also perpetuating low levels of apprehension or fear.


The Economics of Groundwater Remediation and Protection

The Economics of Groundwater Remediation and Protection

Author: Paul E. Hardisty

Publisher: CRC Press

Published: 2004-12-20

Total Pages: 368

ISBN-13: 0203495810

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Economic literature is often too theoretical for engineers and policymakers to put into practical use, while scientific literature on the remediation of contaminated aquifers rarely considers costs and benefits. Written by a hydrogeologist and an economist, The Economics of Groundwater Remediation and Protection integrates economics and cost-benefit analysis tools with optimal protection and remediation strategies for groundwater resources. The book provides a thorough introduction of the concepts of groundwater flow and contaminant transport, and the basics of economic decision making techniques. It illustrates the types of risks and impacts caused by groundwater contamination, and the economic benefits of its remediation. The volume reviews a wide range of issues such as cost, implementation, and expectations of success for the latest remediation trends and techniques. The book shows how economic analysis can be used to determine how much we should pay for groundwater clean-up, and when spending too much - or too little - actually makes us all worse-off. The authors' step-by-step methodology for decision-making focuses on determining optimal remedial objectives, from containment to extensive cleanup, and the selection of least-cost alternatives. They use examples from their personal experience to illustrate the methodologies in action and put the issues into perspective. Combining the theoretical and practical aspects of science, policy, and economics, this book places the importance of groundwater remediation in the context of environmental economics, protection, and preservation. The Economics of Groundwater Remediation and Protection is also an excellent introduction to innovative solutions for funding remediation projects, education, and incentive programs, such as mitigation banking, land pollution credit schemes, and conservation credit alternatives.


Remediation Engineering

Remediation Engineering

Author: Suthan S. Suthersan

Publisher: CRC Press

Published: 1996-10-24

Total Pages: 390

ISBN-13: 9781420050585

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In many cases, the application of in situ technologies evolved as a necessity from a cost perspective. However, the basic understanding of the mechanisms and theory behind these technologies was treated as a "black box." Although we have seen some tremendous successes in the application of remediation technologies over the past several years, we have also seen many cases in which a technology has been incorrectly or inappropriately applied. In most cases, this misapplication has been the result of a poor understanding of the basic concepts and mechanisms behind the technologies. Without proper understanding, the potential for misapplication of technologies remains a serious economic and technical threat.


Microbe Mediated Remediation of Environmental Contaminants

Microbe Mediated Remediation of Environmental Contaminants

Author: Ajay Kumar

Publisher: Woodhead Publishing

Published: 2020-10-14

Total Pages: 474

ISBN-13: 0128232072

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Microbe Mediated Remediation of Environmental Contaminants presents recent scientific progress in applying microbes for environmental management. The book explores the current existing practical applications and provides information to help readers develop new practices and applications. Edited by recognized leaders in the field, this penetrating assessment of our progress to date in deploying microorganisms to the advantage of environmental management and biotechnology will be widely welcomed by those working in soil contamination management, agriculture, environment management, soil microbiology, and waste management. The polluting effects on the world around us of soil erosion, the unwanted migration of sediments, chemical fertilizers and pesticides, and the improper treatment of human and animal wastes have resulted in serious environmental and social problems around the world, problems which require us to look for solutions elsewhere than established physical and chemical technologies. Often the answer lies in hybrid applications in which microbial methods are combined with physical and chemical ones. When we remember that these highly effective microorganisms, cultured for a variety of applications, are but a tiny fraction of those to be found in the world around us, we realize the vastness of the untapped and beneficial potential of microorganisms. Explores microbial application redressing for soil and water contamination challenges Includes information on microbial synthesized nanomaterials for remediation of contaminated soils Presents a uniquely hybrid approach, combining microbial interactions with other chemical and physical methods


Remediation of Heavy Metals in the Environment

Remediation of Heavy Metals in the Environment

Author: Jiaping Paul Chen

Publisher: CRC Press

Published: 2016-11-18

Total Pages: 662

ISBN-13: 1315356929

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This book provides in-depth coverage of environmental pollution sources, waste characteristics, control technologies, management strategies, facility innovations, process alternatives, costs, case histories, effluent standards, and future trends in waste treatment processes. It delineates methodologies, technologies, and the regional and global effects of important pollution control practices. It focuses on toxic heavy metals in the environment, various heavy metal decontamination technologies, brownfield restoration, and industrial, agricultural, and radioactive waste management. It discusses the importance of metals such as lead, chromium, cadmium, zinc, copper, nickel, iron, and mercury.