Estimating Source Strength Functions Of Dense Non Aqueous Phase Liquids From Historical Field Datasets

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Estimating Source Strength Functions of Dense Non-aqueous Phase Liquids from Historical Field Datasets

Author : Brandon T. Wood
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (779 download)

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Book Synopsis Estimating Source Strength Functions of Dense Non-aqueous Phase Liquids from Historical Field Datasets by : Brandon T. Wood

Download or read book Estimating Source Strength Functions of Dense Non-aqueous Phase Liquids from Historical Field Datasets written by Brandon T. Wood and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: Dense non-aqueous phase liquids (DNAPLs) pose a number of challenges in groundwater remediation design as well as prediction of contaminant fate. Previous research has suggested that flux based analysis may more closely relate a contaminant source zone to plume evolution and analysis of risk to human health and the environment. Several mathematical models have been developed to relate DNAPL mass and spatial distribution to contaminant mass flux. These functions were coupled with plume evolution models in order to assess their applicability to field settings using historical field data sets. These coupled solutions were used in an optimization framework in order to assess the applicability of source strength functions to field sites and the feasibility of characterizing a DNAPL source zone with historical data, mainly in the form of contaminant plume information both temporally and spatially. An efficient optimization technique, evolutionary optimization or genetic algorithm optimization was used to parameterize source strength functions for both known (synthetically generated data with known conditions) and unknown (field sites) historical datasets of various temporal record duration and resolution. This allowed for effective and accurate parameterization of source information for synthetically generated data, but due to the limitations of the analytical solutions to describe solute transport at field sites, failed to accurately parameterize certain cases. It is suggested that transport solutions that more accurately describe field settings are required for this type of analysis.

Estimating Source Strength Parameters at DNAPL Contaminated Field Sites Using Historical Transect and Pumping Data

Author : Rachel E. Donahue
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (779 download)

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Book Synopsis Estimating Source Strength Parameters at DNAPL Contaminated Field Sites Using Historical Transect and Pumping Data by : Rachel E. Donahue

Download or read book Estimating Source Strength Parameters at DNAPL Contaminated Field Sites Using Historical Transect and Pumping Data written by Rachel E. Donahue and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: Several mathematical models or source strength functions have been proposed to describe the temporal dissolution of dense nonaqueous phase liquids in groundwater. Comparing functions to information in historical data sets at contaminated sites may produce reliable estimates of a site's source zone dissolution parameters that can be used as tools in planning future site management. This research effort was aimed at developing protocols for using current mass discharge data from transects of concentration data and from pumping activities in the pursuit of estimating parameters of source strength functions at field sites to effectively guide site management decisions. An exhaustive search algorithm was programmed in FORTRAN to locate the best fit parameters for two of the proposed source dissolution models linked to a one-dimensional advection dispersion equation. The code was validated with a synthetic data set generated using MODFLOW and RT3D. The code was then applied to mass discharge data at four field sites and concentration data from a pumping well on one field site. It was found that the methods could be successfully applied to field sites but that the equations contained too many sensitive fitting parameters to confidently isolate a unique set of best fit parameters. Future work should look at ways minimizing the number of fitting parameters. These protocols will help advance the use of source strength functions as a measure used by those making site management decisions.

Contaminants in the Subsurface

Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 030909447X
Total Pages : 371 pages
Book Rating : 4.3/5 (9 download)

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Book Synopsis Contaminants in the Subsurface by : National Research Council

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.

DNAPL Site Evaluation

Author : James W. Mercer
Publisher : CRC-Press
ISBN 13 : 9780873719773
Total Pages : 384 pages
Book Rating : 4.7/5 (197 download)

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Book Synopsis DNAPL Site Evaluation by : James W. Mercer

Download or read book DNAPL Site Evaluation written by James W. Mercer and published by CRC-Press. This book was released on 1993-04-29 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: DNAPL Site Evaluation covers long-term contamination of ground water by DNAPL (dense non-aqueous phase liquids) chemicals. The book develops a framework for planning and implementing DNAPL site characterization activities. It provides detailed methods to identify, characterize, and monitor sites and analyzes their utility, limitations, risks, availability, and cost. Methods to interpret contaminant fate and transport are identified, and new site characterization methods are assessed. DNAPL Site Evaluation will maximize the cost-effectiveness of site investigation/remediation by providing the best information available to describe and evaluate methods to be used for determining the presence, fate, and transport of subsurface DNAPL contamination. The book will be a useful reference for groundwater professionals and environmental regulatory personnel.

Natural Attenuation for Groundwater Remediation

Author : Commission on Geosciences, Environment, and Resources
Publisher : National Academies Press
ISBN 13 : 0309069327
Total Pages : 289 pages
Book Rating : 4.3/5 (9 download)

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Book Synopsis Natural Attenuation for Groundwater Remediation by : Commission on Geosciences, Environment, and Resources

Download or read book Natural Attenuation for Groundwater Remediation written by Commission on Geosciences, Environment, and Resources and published by National Academies Press. This book was released on 2000-08-31 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past decade, officials responsible for clean-up of contaminated groundwater have increasingly turned to natural attenuation-essentially allowing naturally occurring processes to reduce the toxic potential of contaminants-versus engineered solutions. This saves both money and headaches. To the people in surrounding communities, though, it can appear that clean-up officials are simply walking away from contaminated sites. When is natural attenuation the appropriate approach to a clean-up? This book presents the consensus of a diverse committee, informed by the views of researchers, regulators, and community activists. The committee reviews the likely effectiveness of natural attenuation with different classes of contaminants-and describes how to evaluate the "footprints" of natural attenuation at a site to determine whether natural processes will provide adequate clean-up. Included are recommendations for regulatory change. The committee emphasizes the importance of the public's belief and attitudes toward remediation and provides guidance on involving community stakeholders throughout the clean-up process. The book explores how contamination occurs, explaining concepts and terms, and includes case studies from the Hanford nuclear site, military bases, as well as other sites. It provides historical background and important data on clean-up processes and goes on to offer critical reviews of 14 published protocols for evaluating natural attenuation.

Soil Screening Guidance

Author :
Publisher :
ISBN 13 :
Total Pages : 182 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Soil Screening Guidance by :

Download or read book Soil Screening Guidance written by and published by . This book was released on 1996 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Journal of Research of the National Bureau of Standards

Author : United States. National Bureau of Standards
Publisher :
ISBN 13 :
Total Pages : 614 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Journal of Research of the National Bureau of Standards by : United States. National Bureau of Standards

Download or read book Journal of Research of the National Bureau of Standards written by United States. National Bureau of Standards and published by . This book was released on 1985 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt:

2009 Joint Assembly Abstracts, 24-27 May 2009, Toronto, Ontario, Canada

Author : American Geophysical Union. Joint Assembly
Publisher :
ISBN 13 :
Total Pages : 526 pages
Book Rating : 4.8/5 (282 download)

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Book Synopsis 2009 Joint Assembly Abstracts, 24-27 May 2009, Toronto, Ontario, Canada by : American Geophysical Union. Joint Assembly

Download or read book 2009 Joint Assembly Abstracts, 24-27 May 2009, Toronto, Ontario, Canada written by American Geophysical Union. Joint Assembly and published by . This book was released on 2009 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Spatial Modeling and Assessment of Environmental Contaminants

Author : Pravat Kumar Shit
Publisher : Springer Nature
ISBN 13 : 3030634221
Total Pages : 718 pages
Book Rating : 4.0/5 (36 download)

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Book Synopsis Spatial Modeling and Assessment of Environmental Contaminants by : Pravat Kumar Shit

Download or read book Spatial Modeling and Assessment of Environmental Contaminants written by Pravat Kumar Shit and published by Springer Nature. This book was released on 2021-02-05 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book demonstrates the measurement, monitoring and mapping of environmental contaminants in soil & sediment, surface & groundwater and atmosphere. This book explores state-of-art techniques based on methodological and modeling in modern geospatial techniques specifically focusing on the recent trends in data mining techniques and robust modeling. It also presents modifications of and improvements to existing control technologies for remediation of environmental contaminants. In addition, it includes three separate sections on contaminants, risk assessment and remediation of different existing and emerging pollutants. It covers major topics such as: Radioactive Wastes, Solid and Hazardous Wastes, Heavy Metal Contaminants, Arsenic Contaminants, Microplastic Pollution, Microbiology of Soil and Sediments, Soil Salinity and Sodicity, Aquatic Ecotoxicity Assessment, Fluoride Contamination, Hydrochemistry, Geochemistry, Indoor Pollution and Human Health aspects. The content of this book will be of interest to researchers, professionals, and policymakers whose work involves environmental contaminants and related solutions.

Standard Methods for the Examination of Water and Wastewater

Author : American Public Health Association
Publisher :
ISBN 13 :
Total Pages : 1254 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Standard Methods for the Examination of Water and Wastewater by : American Public Health Association

Download or read book Standard Methods for the Examination of Water and Wastewater written by American Public Health Association and published by . This book was released on 1981 with total page 1254 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Laboratory Investigation of Residual Liquid Organics from Spills, Leaks, and the Disposal of Hazardous Wastes in Groundwater

Author : John L. Wilson
Publisher :
ISBN 13 :
Total Pages : 292 pages
Book Rating : 4.3/5 (121 download)

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Book Synopsis Laboratory Investigation of Residual Liquid Organics from Spills, Leaks, and the Disposal of Hazardous Wastes in Groundwater by : John L. Wilson

Download or read book Laboratory Investigation of Residual Liquid Organics from Spills, Leaks, and the Disposal of Hazardous Wastes in Groundwater written by John L. Wilson and published by . This book was released on 1990 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Essentials of Paleomagnetism

Author : Lisa Tauxe
Publisher : Univ of California Press
ISBN 13 : 0520260317
Total Pages : 505 pages
Book Rating : 4.5/5 (22 download)

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Book Synopsis Essentials of Paleomagnetism by : Lisa Tauxe

Download or read book Essentials of Paleomagnetism written by Lisa Tauxe and published by Univ of California Press. This book was released on 2010-03-19 with total page 505 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book by Lisa Tauxe and others is a marvelous tool for education and research in Paleomagnetism. Many students in the U.S. and around the world will welcome this publication, which was previously only available via the Internet. Professor Tauxe has performed a service for teaching and research that is utterly unique."—Neil D. Opdyke, University of Florida

Spring Meeting

Author : American Geophysical Union. Meeting
Publisher :
ISBN 13 :
Total Pages : 514 pages
Book Rating : 4.6/5 (238 download)

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Book Synopsis Spring Meeting by : American Geophysical Union. Meeting

Download or read book Spring Meeting written by American Geophysical Union. Meeting and published by . This book was released on 2001 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Scientific and Technical Aerospace Reports

Author :
Publisher :
ISBN 13 :
Total Pages : 716 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Scientific and Technical Aerospace Reports by :

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Characterization, Modeling, Monitoring, and Remediation of Fractured Rock

Author : National Academies of Sciences, Engineering, and Medicine
Publisher : National Academies Press
ISBN 13 : 0309373727
Total Pages : 177 pages
Book Rating : 4.3/5 (93 download)

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Book Synopsis Characterization, Modeling, Monitoring, and Remediation of Fractured Rock by : National Academies of Sciences, Engineering, and Medicine

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.

Oil in the Sea III

Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309084385
Total Pages : 278 pages
Book Rating : 4.3/5 (9 download)

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Book Synopsis Oil in the Sea III by : National Research Council

Download or read book Oil in the Sea III written by National Research Council and published by National Academies Press. This book was released on 2003-03-14 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the early 1970s, experts have recognized that petroleum pollutants were being discharged in marine waters worldwide, from oil spills, vessel operations, and land-based sources. Public attention to oil spills has forced improvements. Still, a considerable amount of oil is discharged yearly into sensitive coastal environments. Oil in the Sea provides the best available estimate of oil pollutant discharge into marine waters, including an evaluation of the methods for assessing petroleum load and a discussion about the concerns these loads represent. Featuring close-up looks at the Exxon Valdez spill and other notable events, the book identifies important research questions and makes recommendations for better analysis ofâ€"and more effective measures againstâ€"pollutant discharge. The book discusses: Inputâ€"where the discharges come from, including the role of two-stroke engines used on recreational craft. Behavior or fateâ€"how oil is affected by processes such as evaporation as it moves through the marine environment. Effectsâ€"what we know about the effects of petroleum hydrocarbons on marine organisms and ecosystems. Providing a needed update on a problem of international importance, this book will be of interest to energy policy makers, industry officials and managers, engineers and researchers, and advocates for the marine environment.

The Water Footprint Assessment Manual

Author : Maite M. Aldaya
Publisher : Routledge
ISBN 13 : 1136538526
Total Pages : 224 pages
Book Rating : 4.1/5 (365 download)

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Book Synopsis The Water Footprint Assessment Manual by : Maite M. Aldaya

Download or read book The Water Footprint Assessment Manual written by Maite M. Aldaya and published by Routledge. This book was released on 2012-08-21 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: People use lots of water for drinking, cooking and washing, but significantly more for producing things such as food, paper and cotton clothes. The water footprint is an indicator of water use that looks at both direct and indirect water use of a consumer or producer. Indirect use refers to the 'virtual water' embedded in tradable goods and commodities, such as cereals, sugar or cotton. The water footprint of an individual, community or business is defined as the total volume of freshwater that is used to produce the goods and services consumed by the individual or community or produced by the business. This book offers a complete and up-to-date overview of the global standard on water footprint assessment as developed by the Water Footprint Network. More specifically it: o Provides a comprehensive set of methods for water footprint assessment o Shows how water footprints can be calculated for individual processes and products, as well as for consumers, nations and businesses o Contains detailed worked examples of how to calculate green, blue and grey water footprints o Describes how to assess the sustainability of the aggregated water footprint within a river basin or the water footprint of a specific product o Includes an extensive library of possible measures that can contribute to water footprint reduction