Download or read book LakeVOC a Computer Model to Estimate the Concentration of Volatile Organic Compounds in Lakes and Reservoirs written by David A. Bender and published by . This book was released on 2003 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fact Sheet written by and published by . This book was released on 2003 with total page 194 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 2004 with total page 1000 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Options for Minimizing Fuel Related Contaminants in Lakes and Reservoirs written by Contra Costa Water District and published by IWA Publishing. This book was released on 2004-01-01 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary objective of the report was to provide reservoir managers with technical and economic information regarding the possible methods for controlling the levels of MTBE and BTEX in reservoir water supplies. This report comprehensively evaluates options to give practical data and advice to water managers who wish to consider the benefits of dual use (use to store drinking water supplies and use as recreational attractions) without introducing unacceptable health risks into the water bodies being managed. Originally published by AwwaRF for its subscribers in 2003
Download or read book Mass Transport of Volatile Organic Compounds Between the Saturated and Vadose Zones written by Monte S. Harner and published by . This book was released on 1996-12-01 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volatile organic compounds (VOCs) dissolved in the saturated zone are transported into the vadose zone primarily by gaseous phase diffusion. If the saturated zone is remediated, VOCs present in the vadose zone may become a secondary source of contamination for the groundwater The amount of VOCs that remain in the vadose zone is dependent on site hydrology, soil properties, and the chemical properties of the contaminants. The purpose of this study was to determine what conditions caused VOC concentrations in the vadose zone to significantly recontaminate the saturated zone. A one-dimensional numerical model was developed to investigate the transport of a VOC, trichioroethylene, between the saturated and vadose zones under a variety of conditions. The model featured steady-state unsaturated water flow and transient contaminant transport Transport mechanisms included aqueous phase advection-dispersion and gaseous phase diffusion. Partitioning between the water, gas, and soil compartments were modeled as equilibrium processes. Sensitivity analyses were performed on several variables including soil type (homogeneous and heterogeneous profiles), water infiltration rate and vadose zone depth. Results indicated that recontamination was most significant rate, and vadose zone depth. Results indicated that recontamination was most significant in the presence of heterogeneous soils, low infiltration rates and deep vadose zones.
Download or read book Authorized and Operating Purposes of Corps of Engineers Reservoirs written by William K. Johnson and published by . This book was released on 1992 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Numerical Investigation of Metabolic Reductive Dechlorination in DNAPL Source Zones written by John Anthony Christ and published by . This book was released on 2005 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: Among the most intractable environmental remediation problems are those involving the release of dense non-aqueous phase liquids (DNAPLs), such as chlorinated solvents, to the subsurface. Research efforts have focused on the use of numerical models to investigate reductions in contaminant concentrations due to partial mass removal and improvements in the performance of complementary source zone remediation technologies. Previous numerical investigations, however, have been limited to two-dimensional systems. Furthermore, a lack of models capable of simulating the most promising complementary technology, metabolic reductive dechlorination, has limited its application. This work developed and applied compositional multiphase numerical simulators to examine the influence of dimensionality (two-dimensions versus three-dimensions) on DNAPL source zone simulations and to investigate the benefits of stimulating metabolic reductive dechlorination at a chlorinated ethene-DNAPL contaminated site. Results from the dimensionality investigation showed that the simulation of DNAPL migration, entrapment, and dissolution in two dimensions provided reasonable approximations to the behavior simulated in three dimensions. Commonly employed saturation distribution and mass recovery metrics were approximately equivalent. Flux- averaged concentrations simulated in two dimensions, however, tended to be three to four times higher than those simulated in three dimensions. This difference was attributed to dilution at the down gradient boundary. An alternative metric, mass flux reduction, however, yielded better agreement.
Download or read book The Colli Albani Volcano written by R. Funiciello and published by Geological Society of London. This book was released on 2010 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Colli Albani Volcano contains 21 scientific contributions on stratigraphy, volcanotectonics, geochronology, petrography and geochemistry, hydrogeology, volcanic hazards, geophysics and archaeology, and a new 1:50 000 scale geological map of the volcano. The proximity to Rome and the interconnection between volcanic and human history also make this volcano of interest for both specialists and non-specialists.
Download or read book Recharge Rates and Chemistry Beneath Playas of the High Plains Aquifer written by Jason J. Gurdak and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Russell Senate Office Building written by and published by . This book was released on 2005 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bioorganic Chemistry written by SIDNEY M AUTOR HECHT and published by Oxford University Press on Demand. This book was released on 1998 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: Each chapter begins with an introduction that includes basic principles, a summary of key findings which support current research in the field, and an overview of current research activity. The remainder of each chapter deals in greater detail with a number of recent studies that illustrate the nature of ongoing activity in the field.
Download or read book Biological and Microbiological Assessment of the Upper Chattahoochee River Basin Georgia written by and published by . This book was released on 1979 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Is a Powerful Quake Likely to Strike in the Next 30 Years written by and published by . This book was released on 2003 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Grammar of Makary Kotoko written by Sean Allison and published by BRILL. This book was released on 2020-06-15 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: In A Grammar of Makary Kotoko, Sean Allison provides a thorough description of Makary Kotoko - a Chadic language of Cameroon, framing the discussion within R.M.W. Dixon’s functional/typological approach known as Basic Linguistic Theory.
Download or read book Analytical Solutions and Computer Programs for Hydraulic Interaction of Stream aquifer Systems written by Paul M. Barlow and published by . This book was released on 1998 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Guide to the Proper Selection and Use of Federally Approved Sediment and Water quality Samplers written by Broderick E. Davis and published by . This book was released on 2005 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Plan to Coordinate NEHRP Post earthquake Investigations written by Thomas L. Holzer and published by . This book was released on 2003 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
