Download or read book SERDP and ESTCP Expert Panel Workshop on Reducing the Uncertainty of DNAPL Source Zone Remediation written by and published by . This book was released on 2006 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes the results of a workshop sponsored by the Department of Defense's (DoD) Strategic Environmental Research and Development Program (SERDP) and Environmental Security Technology Certification Program (ESTCP) that sought to determine the research, development, test, and evaluation (RDT & E) needs for reducing the uncertainty associated with dense nonaqueous phase liquid (DNAPL) source zone remediation at field sites.

Download or read book Chlorinated Solvent Source Zone Remediation written by Bernard H. Kueper and published by Springer Science & Business. This book was released on 2014-04-22 with total page 759 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this book is to help engineers and scientists better understand dense nonaqueous phase liquid (DNAPL) contamination of groundwater and the methods and technology used for characterization and remediation. Remediation of DNAPL source zones is very difficult and controversial and must be based on state-of-the-art knowledge of the behavior (transport and fate) of nonaqueous phase liquids in the subsurface and site specific geology, chemistry and hydrology. This volume is focused on the characterization and remediation of nonaqueous phase chlorinated solvents and it is hoped that mid-level engineers and scientists will find this book helpful in understanding the current state-of-practice of DNAPL source zone management and remediation.

Download or read book In Situ Remediation of Chlorinated Solvent Plumes written by Hans F. Stroo and published by Springer Science & Business Media. This book was released on 2010-09-10 with total page 807 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the late 1970s and early 1980s, our nation began to grapple with the legacy of past disposal practices for toxic chemicals. With the passage in 1980 of the Comprehensive Envir- mental Response, Compensation, and Liability Act (CERCLA), commonly known as Sup- fund, it became the law of the land to remediate these sites. The U. S. Department of Defense (DoD), the nation’s largest industrial organization, also recognized that it too had a legacy of contaminated sites. Historic operations at Army, Navy, Air Force, and Marine Corps facilities, ranges, manufacturing sites, shipyards, and depots had resulted in widespread contamination of soil, groundwater, and sediment. While Superfund began in 1980 to focus on remediation of heavily contaminated sites largely abandoned or neglected by the private sector, the DoD had already initiated its Installation Restoration Program in the mid-1970s. In 1984, the DoD began the Defense Environmental Restoration Program (DERP) for contaminated site assessment and remediation. Two years later, the U. S. Congress codified the DERP and directed the Secretary of Defense to carry out a concurrent program of research, development, and demonstration of innovative remediation technologies. As chronicled in the 1994 National Research Council report, “Ranking Hazardous-Waste Sites for Remedial Action,” our early estimates on the cost and suitability of existing techn- ogies for cleaning up contaminated sites were wildly optimistic. Original estimates, in 1980, projected an average Superfund cleanup cost of a mere $3.

Download or read book SERDP and ESTCP Expert Panel Workshop on Research and Development Needs for the Environmental Remediation Application of Molecular Biological Tools written by and published by . This book was released on 2005 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: SERDP and ESTCP must determine how their limited research, development and demonstration funds can best be invested to improve DoD's ability to effectively address its requirements to remediate contaminated sites. The objectives of this workshop were to (1) examine the current state of the science and technology of molecular biological tools that are applicable to the cleanup of hazardous waste in the field, (2) assess the current operational usage of such tools and identify technical and other barriers to their use, (3) identify promising areas of research and development that have the potential to lead to improved cost-effective tools to support remedial design and decisions, and (4) identify the most promising areas that are ready for and could benefit from rigorous field-scale demonstrations. This report, which documents the findings and recommendations of workshop participants, will serve as a strategic plan to guide future investments in molecular biological tools that can ultimately improve the design, implementation, monitoring and/or performance assessment of remedial technologies.

Download or read book SERDP and ESTCP Expert Panel Workshop on Research and Development Needs for Understanding and Assessing the Bioavailability of Contaminants in Soils and Sediments written by and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes the results of a workshop sponsored by the Department of Defense's (DoD's) Strategic Environmental Research and Development Program (SERDP) and Environmental Security Technology Certification Program (ESTCP) that sought to determine the research, development, test, and evaluation (RDT&E) needs for understanding and assessing the bioavailability of contaminants in soils and sediments.

Download or read book Development of Assessment Tools for Evaluation of the Benefits of DNAPL Source Zone Treatment written by and published by . This book was released on 2008 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since its commencement in September 2002, SERDP Project ER-1293 has supported 4 doctoral students at three universities and resulted in over 40 conference proceedings/technical abstracts and over 20 peer-reviewed publications. These presentations and publications, as referenced in this final report, describe various aspects of the research investigations and tools that have been developed to enhance design and assessment of DNAPL source zone treatment. In general, research in ER-1293 has led to the development and validation of four important concepts: (i) partial source zone mass removal may result in substantial local concentration and mass flux reductions; (ii) potential remediation efficiency is closely linked to source zone architecture (ganglia to pool ratios); (iii) biostimulation and bioaugmentation approaches are feasible for treatment of DNAPL source zones; and (iv) the uncertainty in mass discharge ([M/T]) estimates can be quantified through application of geostatistical methods to field measurements. Major contributions of this research include (i) establishment that rates of metabolic reductive dechlorination can exceed rates of DNAPL dissolution, resulting in aqueous contaminant concentrations in the presence of DNAPL that are substantially lower than saturation levels and are not toxic to the dechlorinating organisms; (ii) enhancements in dissolution will be transient and a function of physico-chemical and biological conditions adjacent to the DNAPL; (iii) demonstration that mass flux reduction behavior can be directly linked to DNAPL source zone architecture; (iv) development of a series of geostatistical approaches capable of quantifying mass discharge uncertainty and guiding real-time sampling design for uncertainty reduction through hot spot delineation ; and (v) creation of a source zone remediation cost estimation tool.

Download or read book Environment Energy and Resources Law written by and published by . This book was released on 2007 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Assessing the Feasibility of DNAPL Source Zone Remediation Review of Case Studies written by and published by . This book was released on 2004 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall goal of this project was to gather information on the relative successes of remediation applications under different site conditions in order to initiate the development of guidelines on DNAPL source treatment. Members of the environmental community that had attempted to remediate DNAPL source zone areas were invited to participate in a web-based survey. which remained open for several months. Survey respondents were asked a number of questions dealing with site-specific issues (e.g. geology. hydrogeology. contaminant distribution. monitoring network) and technology specific issues (c-U. type of remedial technology. remediation stage. cost. treatment effectiveness). The number of survey respondents totaled 213. Of the 213. complete sets of data were obtained for 118 locations. Data from 21 published case studies was also entered into the survey. This report also includes a brief overview of chlorinated solvent DNAPL contamination and remediation processes. The data collected from this survey suggests that DNAPL remediation efficacy is extremely difficult to gauge. and although employing aggressive remedial technologies cannot achieve site closure. significant mass removal can be achieved.

Download or read book In Situ Chemical Oxidation for Groundwater Remediation written by Robert L. Siegrist and published by Springer Science & Business Media. This book was released on 2011-02-25 with total page 715 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides comprehensive up-to-date descriptions of the principles and practices of in situ chemical oxidation (ISCO) for groundwater remediation based on a decade of intensive research, development, and demonstrations, and lessons learned from commercial field applications.

Download or read book Contaminants in the Subsurface written by National Research Council and published by National Academies Press. This book was released on 2005-04-23 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: At hundreds of thousands of commercial, industrial, and military sites across the country, subsurface materials including groundwater are contaminated with chemical waste. The last decade has seen growing interest in using aggressive source remediation technologies to remove contaminants from the subsurface, but there is limited understanding of (1) the effectiveness of these technologies and (2) the overall effect of mass removal on groundwater quality. This report reviews the suite of technologies available for source remediation and their ability to reach a variety of cleanup goals, from meeting regulatory standards for groundwater to reducing costs. The report proposes elements of a protocol for accomplishing source remediation that should enable project managers to decide whether and how to pursue source remediation at their sites.

Download or read book Alternatives for Managing the Nation s Complex Contaminated Groundwater Sites written by National Research Council and published by National Academies Press. This book was released on 2013-02-27 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: Across the United States, thousands of hazardous waste sites are contaminated with chemicals that prevent the underlying groundwater from meeting drinking water standards. These include Superfund sites and other facilities that handle and dispose of hazardous waste, active and inactive dry cleaners, and leaking underground storage tanks; many are at federal facilities such as military installations. While many sites have been closed over the past 30 years through cleanup programs run by the U.S. Department of Defense, the U.S. EPA, and other state and federal agencies, the remaining caseload is much more difficult to address because the nature of the contamination and subsurface conditions make it difficult to achieve drinking water standards in the affected groundwater. Alternatives for Managing the Nation's Complex Contaminated Groundwater Sites estimates that at least 126,000 sites across the U.S. still have contaminated groundwater, and their closure is expected to cost at least $110 billion to $127 billion. About 10 percent of these sites are considered "complex," meaning restoration is unlikely to be achieved in the next 50 to 100 years due to technological limitations. At sites where contaminant concentrations have plateaued at levels above cleanup goals despite active efforts, the report recommends evaluating whether the sites should transition to long-term management, where risks would be monitored and harmful exposures prevented, but at reduced costs.

Download or read book Methods and Techniques for Cleaning up Contaminated Sites written by Michael D. Annable and published by Springer Science & Business Media. This book was released on 2008-01-29 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication comprises the presentations made at the NATO Advanced Research Workshop held in Sinaia, Romania 9 – 11 October, 2006. The contributions represent a unique cross section of issues and challenges related to contaminated site management. These range from low cost solutions to petroleum contaminated sites to advances in biological treatment methods. The publication is meant to foster links between groups facing challenges cleaning up contaminated sites.

Download or read book Characterization Modeling Monitoring and Remediation of Fractured Rock written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2021-01-29 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fractured rock is the host or foundation for innumerable engineered structures related to energy, water, waste, and transportation. Characterizing, modeling, and monitoring fractured rock sites is critical to the functioning of those infrastructure, as well as to optimizing resource recovery and contaminant management. Characterization, Modeling, Monitoring, and Remediation of Fractured Rock examines the state of practice and state of art in the characterization of fractured rock and the chemical and biological processes related to subsurface contaminant fate and transport. This report examines new developments, knowledge, and approaches to engineering at fractured rock sites since the publication of the 1996 National Research Council report Rock Fractures and Fluid Flow: Contemporary Understanding and Fluid Flow. Fundamental understanding of the physical nature of fractured rock has changed little since 1996, but many new characterization tools have been developed, and there is now greater appreciation for the importance of chemical and biological processes that can occur in the fractured rock environment. The findings of Characterization, Modeling, Monitoring, and Remediation of Fractured Rock can be applied to all types of engineered infrastructure, but especially to engineered repositories for buried or stored waste and to fractured rock sites that have been contaminated as a result of past disposal or other practices. The recommendations of this report are intended to help the practitioner, researcher, and decision maker take a more interdisciplinary approach to engineering in the fractured rock environment. This report describes how existing tools-some only recently developed-can be used to increase the accuracy and reliability of engineering design and management given the interacting forces of nature. With an interdisciplinary approach, it is possible to conceptualize and model the fractured rock environment with acceptable levels of uncertainty and reliability, and to design systems that maximize remediation and long-term performance. Better scientific understanding could inform regulations, policies, and implementation guidelines related to infrastructure development and operations. The recommendations for research and applications to enhance practice of this book make it a valuable resource for students and practitioners in this field.

Download or read book Bioaugmentation for Groundwater Remediation written by Hans F. Stroo and published by Springer Science & Business Media. This book was released on 2012-10-02 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: ​This volume provides a review of the past 10 to 15 years of intensive research, development and demonstrations that have been on the forefront of developing bioaugmentation into a viable remedial technology. This volume provides both a primer on the basic microbial processes involved in bioaugmentation, as well as a thorough summary of the methodology for implementing the technology. This reference volume will serve as a valuable resource for environmental remediation professionals who seek to understand, evaluate, and implement bioaugmentation.

Download or read book Cleaning Up the Nation s Waste Sites written by and published by . This book was released on 2004 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reviews of Environmental Contamination and Toxicology Volume 236 written by Pim de Voogt and published by Springer. This book was released on 2015-09-30 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reviews of Environmental Contamination and Toxicology provides concise, critical reviews of timely advances, philosophy and significant areas of accomplished or needed endeavor in the total field of xenobiotics, in any segment of the environment, as well as toxicological implications.

Download or read book The Environmental Pendulum written by R. Allan Freeze and published by Univ of California Press. This book was released on 2023-04-28 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt: The pendulum of environmental policy swings from one extreme to the other, depending on which camp is in power and who has the ear of the media. Underkill is followed by overkill. Concern breeds action; disillusion breeds reaction. The Environmental Pendulum provides a thoughtful and evenhanded assessment of this conflict. Tens of thousands of sites across the country are contaminated with toxic chemicals. Environmentalists warn us that this legacy of carelessness is seriously affecting both human health and the ecological balance of nature. They point out that even improved industrial practices will not eliminate future chemical releases to the environment. Their demand for regulatory control has received wide public support and led to the passage of the Superfund legislation in 1980. Now, after twenty years, the value of the Superfund program is being challenged by corporate America, which argues that excessive cleanup costs have the potential to bankrupt the nation. R. Allan Freeze outlines the difficulties associated with the management of hazardous waste and offers a balanced account of the controversy over the role of environmental contamination in human health. Freeze clarifies what matters and what doesn't with respect to chemical contaminants in the environment, arguing that environmental policies should be based on an accurate appraisal of the risks associated with these toxins. He concludes the book with a brilliant summation of the good news and the bad news of environmental pollution, describing what can and can't be done to bring the situation under control. This title is part of UC Press's Voices Revived program, which commemorates University of California Press's mission to seek out and cultivate the brightest minds and give them voice, reach, and impact. Drawing on a backlist dating to 1893, Voices Revived makes high-quality, peer-reviewed scholarship accessible once again using print-on-demand technology. This title was originally published in 2000. The pendulum of environmental policy swings from one extreme to the other, depending on which camp is in power and who has the ear of the media. Underkill is followed by overkill. Concern breeds action; disillusion breeds reaction. The Environmental Pe