Download or read book Sediment Dredging at Superfund Megasites written by National Research Council and published by National Academies Press. This book was released on 2007-10-30 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Superfund Sediment Sites written by J. Alfredo Gomez and published by . This book was released on 2016-12-19 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water bodies in the U.S., including rivers and harbors, may contain contaminated sediments that pose risks to ecosystems and human health. The federal government's principal program to clean up hazardous waste sites, including sediment sites, is the Environmental Protection Agency's (EPA's) Superfund program. Recently estimated costs for cleanups of some large Superfund sediment sites have ranged from about $500 million to $1.4 billion. This report examines: (1) the steps EPA has taken to help provide national consistency in its management of Superfund sediment sites; (2) the extent to which EPA followed these steps at selected Superfund sediment sites; and (3) the challenges EPA officials said the agency faced in managing cleanups of Superfund sediment sites. Tables and figures. This is a print on demand report.
Download or read book Superfund Sediment Sites written by United States Government Accountability Office and published by Createspace Independent Publishing Platform. This book was released on 2016-10-30 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water bodies in the United States-including rivers, lakes, and harbors-may contain contaminated sediments that pose risks to aquatic ecosystems and human health. Contaminated sediments are toxic or hazardous substances contained in soil, sand, organic matter, or other materials accumulating on the bottom of water bodies at levels that may adversely affect human health or the environment, or both. These substances include polychlorinated biphenyls, or PCBs,1 and metals, such as mercury, many of which persist for years or decades because they do not degrade or degrade very slowly in aquatic environments. Contaminants in sediments can directly harm aquatic organisms or accumulate in their tissues, which can then be consumed by humans or wildlife. As a result, contaminated sediments are often a contributing factor to the over 4,800 fish consumption advisories issued nationwide asof 2011.2 They can also impair the navigational and recreational uses of water bodies, according to the National Research Council.3 Congress enacted the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) in 1980, to protect human health and the environment from the effects of hazardous substances, including those in contaminated media such as groundwater, soil, or sediments.4 CERCLA established the Superfund program, which is the federal government's principal program to clean up the nation's most contaminated hazardous waste sites, and the Environmental Protection Agency (EPA) is the agency responsible for administering the program. Two basic types of cleanups, or response actions, are conducted under the Superfund program: (1) remedial actions and (2) removal actions. Remedial actions are generally long-term cleanups-consisting of one or more remedial action projects-that aim to permanently and significantly reduce contamination and that can take a considerable amount of time and money, depending on the nature of the contamination and other site-specific factors. Removal actions are usually short-term cleanups for sites that pose immediate threats to human health or the environment. The authority for selecting response actions has been delegated from the EPA Administrator to the agency's 10 Regional Administrators.
Download or read book Superfund Sediments Sites written by United States Government Accountability Office and published by Createspace Independent Publishing Platform. This book was released on 2017-09-23 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water bodies in the United States, including rivers and harbors, may contain contaminated sediments that pose risks to ecosystems and human health. The federal government's principal program to clean up hazardous waste sites, including sediment sites, is EPA's Superfund program, authorized by the Comprehensive Environmental Response, Compensation, and Liability Act. Recently estimated costs for cleanups of some large Superfund sediment sites have ranged from about $500 million to $1.4 billion, according to EPA documents. GAO was asked to review issues related to Superfund sediment sites. This report examines: (1) the steps EPA has taken to help provide national consistency in its management of Superfund sediment sites; (2) the extent to which EPA followed these steps at selected Superfund sediment sites; and (3) the challenges EPA officials said the agency faced in managing cleanups of Superfund sediment sites. GAO reviewed applicable laws, regulations, and guidance; a nonprobability sample of 6 of the 71 Tier 1 and 12 of the 17 Tier 2 Superfund sediment sites; and EPA documents from selected sites. GAO interviewed EPA officials and representatives of two stakeholder groups.
Download or read book State Liability at Superfund Sites in Washington State written by United States. Environmental Protection Agency. Region X. and published by . This book was released on 1997 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sediment Dredging at Superfund Megasites written by National Academies Press and published by . This book was released on 2007 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Processes Assessment and Remediation of Contaminated Sediments written by Danny D. Reible and published by Springer Science & Business Media. This book was released on 2013-07-20 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this book is to help engineers and scientists better understand contaminated sediment sites and identify and design remedial approaches that are more efficient and effective. Contaminated sediment management is a difficult and costly exercise that is rarely addressed with easily identified and implemented remedies. It is hoped that this book can help identify and implement management approaches that provide an optimal, if not entirely satisfactory, solution to sediment contaminant problems.
Download or read book Contaminated Sediments in Ports and Waterways written by Division on Engineering and Physical Sciences and published by National Academies Press. This book was released on 1997-03-20 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contaminated marine sediments threaten ecosystems, marine resources, and human health. They can have major economic impacts when controversies over risks and costs of sediment management interfere with needs to dredge major ports. Contaminated Sediments in Ports and Waterways examines management and technology issues and provides guidance that will help officials make timely decisions and use technologies effectively. The book includes recommendations with a view toward improving decision making, developing cost-effective technologies, and promoting the successful completion of cleanup projects. The volume assesses the state of practice and research and development status of both short-term and longer-term remediation methods. The committee provides a conceptual overview for risk-based contaminated sediment management that can be used to develop plans that address complex technological, political, and legal issues and the interests of various stakeholders. The book emphasizes the need for proper assessment of conditions at sediment sites and adequate control of contamination sources.
Download or read book Contaminated Sediments in Ports and Waterways written by Division on Engineering and Physical Sciences and published by National Academies Press. This book was released on 1997-04-20 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contaminated marine sediments threaten ecosystems, marine resources, and human health. They can have major economic impacts when controversies over risks and costs of sediment management interfere with needs to dredge major ports. Contaminated Sediments in Ports and Waterways examines management and technology issues and provides guidance that will help officials make timely decisions and use technologies effectively. The book includes recommendations with a view toward improving decision making, developing cost-effective technologies, and promoting the successful completion of cleanup projects. The volume assesses the state of practice and research and development status of both short-term and longer-term remediation methods. The committee provides a conceptual overview for risk-based contaminated sediment management that can be used to develop plans that address complex technological, political, and legal issues and the interests of various stakeholders. The book emphasizes the need for proper assessment of conditions at sediment sites and adequate control of contamination sources.
Download or read book Framework for the Development of the National Sediment Inventory written by and published by . This book was released on 1993 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book EPA s Contaminated Sediment Management Strategy written by United States. Environmental Protection Agency. Office of Water and published by . This book was released on 1994 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Developing Sediment Remediation Goals at Superfund Sites Based on Pore Water for the Protection of Benthic Organisms from Direct Toxicity to Non ionic Organic Contaminants written by Lawrence P. Burkhard and published by . This book was released on 2017 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Strategies to Address Contaminated Sediments written by United States. Congress. House. Committee on Transportation and Infrastructure. Subcommittee on Water Resources and Environment and published by . This book was released on 2001 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Superfund written by United States. General Accounting Office and published by . This book was released on 2000 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigative Strategies for Lead Source Attribution at Superfund Sites Associated with Mining Activities written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2017-10-31 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Superfund program of the US Environmental Protection Agency (EPA) was created in the 1980s to address human-health and environmental risks posed by abandoned or uncontrolled hazardous-waste sites. Identification of Superfund sites and their remediation is an expensive multistep process. As part of this process, EPA attempts to identify parties that are responsible for the contamination and thus financially responsible for remediation. Identification of potentially responsible parties is complicated because Superfund sites can have a long history of use and involve contaminants that can have many sources. Such is often the case for mining sites that involve metal contamination; metals occur naturally in the environment, they can be contaminants in the wastes generated at or released from the sites, and they can be used in consumer products, which can degrade and release the metals back to the environment. This report examines the extent to which various sources contribute to environmental lead contamination at Superfund sites that are near lead-mining areas and focuses on sources that contribute to lead contamination at sites near the Southeast Missouri Lead Mining District. It recommends potential improvements in approaches used for assessing sources of lead contamination at or near Superfund sites.
Download or read book Assessment of Technologies for the Remediation of Radioactively Contaminated Superfund Sites written by and published by . This book was released on 1990 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Science policy council contaminated sediments science priorities written by and published by DIANE Publishing. This book was released on 2004 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
