Download or read book Transport and Transformations of Chlorinated solvent Contamination in a Saprolite and Fractured Rock Aquifer Near a Former Wastewater treatment Plant Greenville South Carolina written by and published by . This book was released on 1997 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Water resources Investigations Report written by and published by . This book was released on 1999 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Geological Survey Toxic Substances Hydrology Program Subsurface contaminationfrom point sources written by U.S. Geological Survey Toxic Substances Hydrology Program. Technical Meeting and published by . This book was released on 1999 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Groundwater Contamination written by Chester D. Rail and published by CRC Press. This book was released on 2000-05-02 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fully updated and expanded into two volumes, the new edition of Groundwater Contamination explains in a comprehensive way the sources for groundwater contamination, the regulations governing it, and the technologies for abating it. This volume discusses aquifer management and strategies for stormwater control and groundwater restoration. A number of case histories on site analysis and remediation based on DOE and state documents are included. Among the many new features of this edition are a full discussion of risk assessment, the preparation of groundwater protection plans, and references linking the text to over 2,300 water-related Web sites.

Download or read book Groundwater Contamination Volume I written by Chester D. Rail and published by CRC Press. This book was released on 2000-04-14 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fully updated and expanded into two volumes, the new edition of Groundwater Contamination explains in a comprehensive way the sources for groundwater contamination, the regulations governing it, and the technologies for abating it. Volume 1 covers all major contaminants and explains the hydrology and data used to determine the extent of pollution.

Download or read book U S Geological Survey Toxic Substances Hydrology Program written by U.S. Geological Survey Toxic Substances Hydrology Program. Technical Meeting and published by . This book was released on 1999 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Publications of the Geological Survey written by Geological Survey (U.S.) and published by . This book was released on 1997 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1997 with total page 940 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book New Publications of the U S Geological Survey written by and published by . This book was released on 1997 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book New Publications of the Geological Survey written by Geological Survey (U.S.) and published by . This book was released on 1997 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Saline Water Contamination in Quarterly Deposits and the Poplar River East Poplar Oil field Northeastern Montana written by Joanna N. Thamke, Steven D. Craig and published by . This book was released on 1997 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Fate of Chlorinated Compounds in a Sedimentary Fractured Rock Aquifer in South Central Wisconsin written by Ziheng Miao and published by . This book was released on 2008 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study was carried out in a sedimentary fractured rock site located in south central Wisconsin, US, which was impacted by DNAPL releases estimated to occur in the 1950's and 1960's. The majority of the DNAPL has accumulated in the upper portion of the Lone Rock Formation at a depth between 140 and 180 ft bgs referred as Layer 5 in this study. A groundwater VOC plume of more than 3km long has formed in this Layer. The DNAPL is mainly composed of 1,1,1-TCA, PCE, TCE and BTEX, while large amounts of biodegradation products such as cis-DCE and 1,1-DCA are present in the plume. Long term VOC data have been collected at the site and diverse geological and hydrogeological techniques have been applied to have a better understanding of the DNAPL history and behavior of the VOC plume. Evidence of biodegradation was also documented near the DNAPL source in these studies. The thesis objectives of the present study aimed first to have a better understanding of the long term contaminant distribution and degradation history at the site. This objective was accomplished reviewing the VOC historical concentration data collected from 1992 to 2006 in the wells tapping the most contaminated. hydrogeological unit in the bedrock (Layer 5) and in the overburden aquifer (referred as Layer 2). The second objective aimed to evaluate the current degree or extent of biodegradation of chlorinated compounds, which was accomplished evaluating the current groundwater redox conditions and using a combined analysis of VOC concentration and carbon isotope data collected in groundwater in September 2007. The historical data collected between1992 to 2006 showed the degradation of the VOC plume in Layer 5 was controlled by the availability of electron acceptors and redox conditions in the fracture bedrock aquifer. This pattern and the extension of the VOC plume were linked to different DNALP pumping events in the source zone and the operation of a Hydraulic Barrier System. The current geochemical and isotope study showed a different pattern of biodegradation of chlorinated compounds in different parts of the plume. The cis-DCE tend to accumulate in the area from the source to the middle of the plume and around 80 % of biodegradation of 1,1,1-TCA to 1,1-DCA was observed in this area. The fringes of the plume were characterized by a dominant presence of TCE and 1,1,1 TCA. These patterns were linked to different redox conditions and amount of electron acceptors. The cis-DCE dominated area is characterized by anaerobic conditions and the presence of relative high amount of BTEX. The TCE-dominated area is under aerobic condition and no BTEX was found in this area. The operation of the Hydraulic Barrier System seems to have change redox condition which influenced the extent of degradation in the plume, especially in the area between the extraction wells. The formation of large amounts of VC in Layer 2 and the more reducing (at least sulfate reducing and maybe methanogenic conditions) of the groundwater in this Layer compared to Layer 5 confirmed the extent of VOC biodegradation is linked to the availability of electron donors. This study provides information about the current degree of the biodegradation of chlorinated compounds at a fracture rock site. This information is very valuable for the evaluation of natural attenuation as strategy for long term plume management or for future remediation strategies such as biostimulation or bioaugmentation at the site. This study also shows the present and long term behavior of the chlorinated compounds (degradation history) in the most contaminated hydrogeologic unit (Layer 5), has mainly been controlled by plume management strategies including DNAPL pumping in the source and the creation of a Hydraulic Barrier System. The ketones and BTEX, that acted as electron donors and carbon substrate for the microbial community responsible for the dechlorination of chlorinated compounds were shown to have controlled the past and current redox conditions and thus the degree and potential of biodegradation of chlorinated ethenes and chlorinated ethanes at the study site.

Download or read book Remediation of Soils and Ground Water Contaminated by Aromatic and Chlorinated Hydrocarbons and Metals written by Inez Hua and published by . This book was released on 2004-05-15 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Assessment of Subsurface Chlorinated Solvent Contamination Using Tree Cores at the Front Street Site and a Former Dry Cleaning Facility at the River front Superfund Site New Haven Missouri 1999 2003 written by John G. Schumacher and published by . This book was released on 2004 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Predicting Contaminant Transport Along Veins and Fractures in Saprolite Above the Water Table written by Michael J. Vepraskas and published by . This book was released on 1995 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optimization of Palladium Catalyzed in Situ Destruction of Trichloroehtylene Contaminated Groundwater Using a Genetic Algorithm written by Manuel Fernandez and published by . This book was released on 2001-03-01 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conventional technologies for the treatment of groundwater contaminated with chlorinated solvents have limitations that have motivated development of innovative technologies. One such technology currently under development involves using palladium-on-alumina (Pd/Al) as a catalyst to promote dechlorination. Pd/Al catalyst may be used in-well as part of a re-circulating horizontal flow treatment well (HFTW) system. An HFTW system involves two or more dual-screened wells, with in-well reactors, to capture and treat contaminated groundwater without the need to pump the water to the surface. In this study, objective and fitness functions, based on system costs and TCE concentration requirements, were developed to optimize a dual-well HFTW system with in-well Pd/Al reactors in a two-aquifer remediation scenario. A genetic algorithm (GA) was coupled with a three dimensional numerical model of contaminant fate and transport to determine optimized HFTW control parameters (well location, pumping rate, and reactor size). The GA obtained a solution within the specified constraints, but the solution was an artificial solution, as contaminated groundwater in one of the two aquifers received no treatment. Based on these results, new objective and fitness functions were developed in an effort to determine the most cost effective solution to remove contaminant mass from the aquifer. The solution arrived at using this approach, while resulting in minimized values of cost per contaminant mass destroyed, produced unacceptably high downgradient contaminant concentration levels. We conclude that by specifying that only two wells could be used in the HFTW system, we overconstrained the problem and that a multi-well HFTW solution is required.