Download or read book The Use of Plant transpired Water to Monitor Subsurface Tritium Contamination in Soil Water and Ground Water written by Susan G. Monheit and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Application of Tritium Tracer in Soil and Plant Water Investigations written by F. S. Nakayama and published by . This book was released on 1960 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of the Potential Impacts from Tritium Soil Contamination in the CP 5 Yard written by and published by . This book was released on 1998 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on a review of available data, significant contributions to low-level tritium soil contamination in the CP-5 yard have been made by airborne tritium fallout and rainout from the CP-5 ventilation system stack. Based on the distribution of tritium in the yard, it is also likely that leaks in secondary system piping which lead to the cooling towers were a significant contributor to tritium in CP-5 yard subsurface soil. Based on the foregoing analysis, low-level tritium contamination will not prohibit the release of the yard for unrestricted use in the future. Worst case dose estimates based on very conservative assumptions indicate that a 25 rmem annual effective dose equivalent limit will not be exceeded under the most restrictive residential-use family farm scenario. Given the impermeable nature of the glacial till under CP-5, low-level concentrations of tritium may be occasionally detected in the deep well (3300 12D), but the peak concentration will not approach the levels calculated by RESRAD; however, continued monitoring of the deep well is recommended. To ensure that all sources of potential tritium release have been removed from the CP-5 complex, removal of tritiated water from each rod-out hole and an evaluation of the physical integrity of the rod-out holes is recommended. This will also allow for an evaluation of tritium concentrations in shallow groundwater under CP-5 by sampling groundwater that is currently being forced into the drain tile system. Additional surface and subsurface soil sampling and analysis will be required to determine the final release status of soils around the Building 330 complex relative to elevated concentrations of CS-137, CO-60,Co-57, and Eu-152 identified during the 1993 IT Corporation characterization. The potential radiological impact from isolated elevations of the latter radionuclides is relatively low and can be evaluated as part of the final status survey of outdoor areas surrounding the Building 330 complex. In summary, the following activities are recommended: Remove tritiated water from each rod-out hole; Monitor rod-out hole tritium concentrations as they fill up with shallow groundwater; Continue groundwater monitoring and Perform surface and subsurface soil sampling around the CP-5 complex as part of the final status survey.
Download or read book Vertical Tritium Transport from the Shallow Unsaturated Zone to the Atmosphere Amargosa Desert Research Site Nevada written by Christina Amanda Garcia and published by . This book was released on 2007 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the impact of desert vegetation on tritium transport and fate is essential when considering radioactive waste isolation in the western United States. This study uses filed data to estimate the magnitude and spatio-temporal variability of tritiated-water vapor tritium transport from the shallow unsaturated zone to the atmosphere adjacent to a radioactive waste facility and numerical modeling to clarify tritium transport mechanisms beneath desert vegetation. A 2-year tritiated-water vapor mass was released within the study area and quantified using evaporation, transpiration, and tritiated-water vapor concentrations in plants and shallow soil. Numerical simulation results indicate that root uptake by desert vegetation can lead to upward water movement below the root zone. This can increase the upward tritiated-water vapor flux. Amplified upward fluxes prevent long term shallow subsurface moisture accumulation, limiting moisture penetration below the root zone and the potential for groundwater contamination.--Adapted from the abstract.
Download or read book Introduction to Phytoremediation of Contaminated Groundwater written by James E. Landmeyer and published by Springer Science & Business Media. This book was released on 2011-09-18 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides the reader with the comprehensive view necessary to understand and critically evaluate the design, implementation, and monitoring of phytoremediation at sites characterized by contaminated groundwater. Part I presents the historical foundation of the interaction between plants and groundwater, introduces fundamental groundwater concepts for plant physiologists, and introduces basic plant physiology for hydrogeologists. Part II presents information on how to assess, design, implement, and monitor phytoremediation projects for hydrologic control. Part III presents how plants take up and detoxify a wide range of organic xenobiotics in contaminated groundwater systems, and provides various approaches on how this can be assessed and monitored. Throughout, concepts are emphasized with numerous case studies, illustrations and pertinent literature citations.
Download or read book Tritium Accumulation in Lettuce Fumigated with Elemental Tritium written by J. C. McFarlane and published by . This book was released on 1976 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Application of Tritium Tracer in Soil and Plant Water Investigations Classic Reprint written by Francis S. Nakayama and published by Forgotten Books. This book was released on 2017-11-18 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Application of Tritium Tracer in Soil and Plant Water Investigations Future studies in unsaturated and saturated movement of water in soils will undoubtedly involve the use of tritiated water. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book Summary of the Phytoremediation State of the Science Conference Boston Massachusetts May 1 2 2000 written by and published by . This book was released on 2001 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Tracers in Subsurface Hydrology written by Peter G. Cook and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 545 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental Tracers in Subsurface Hydrology synthesizes the research of specialists into a comprehensive review of the application of environmental tracers to the study of soil water and groundwater flow. The book includes chapters which cover ionic tracers, noble gases, chlorofluorocarbons, tritium, chlorine-36, oxygen-18, deuterium, and isotopes of carbon, strontium, sulphur and nitrogen. Applications of the tracers include the estimation of vertical and horizontal groundwater velocities, groundwater recharge rates, inter-aquifer leakage and mixing processes, chemical processes and palaeohydrology. Practicing hydrologists, soil physicists and hydrology professors and students will find the book to be a valuable support in their work.
Download or read book Rapid Assessment of Soil and Groundwater Tritium by Vegetation Sampling written by and published by . This book was released on 1995 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: A rapid and relatively inexpensive technique for defining the extent of groundwater contamination by tritium has been investigated. The technique uses existing vegetation to sample the groundwater. Water taken up by deep rooted trees is collected by enclosing tree branches in clear plastic bags. Water evaporated from the leaves condenses on the inner surface of the bag. The water is removed from the bag with a syringe. The bags can be sampled many times. Tritium in the water is detected by liquid scintillation counting. The water collected in the bags has no color and counts as well as distilled water reference samples. The technique was used in an area of known tritium contamination and proved to be useful in defining the extent of tritium contamination.
Download or read book Investigation of the Tritium Release Occurrence at the Rocky Flats Plant written by U.S. Atomic Energy Commission and published by . This book was released on 1973 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tritium Monitoring of Groundwater and Surfaces written by and published by . This book was released on 1999 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are numerous facilities, both within the US and in the rest of the world, within the complex of radiation laboratories and production plants where tritium has been released into the environment because of historic or ongoing mission-related operations. Many of environmental restoration projects have detected low levels of tritium contamination in local streams, ponds, and/or ground water. Typically these waters are moving or have the potential to move offsite and are viewed as a potential risk to the public and environment. Los Alamos National Laboratory will modify the well-proven long-range alpha detection (LRAD) technique for detection of ionizing radiation to optimize a system for detecting tritium in groundwater and other surfaces. The LRAD technique relies on detection of ionized air molecules rather than direct detection of ionizing radiation. The detected electrical current is proportional to the number of ionized air molecules present, which is in turn a measure of the amount of contamination present. Although this technique has been used commercially to measure alpha contamination on objects and surfaces, the technique is also ideal for monitoring low-energy beta particles. The authors have demonstrated beta detection using 54Mn, 14C, 147Pm, 99Tc, 9°Sr, and 36Cl sources. Thus, the detector technology and detection of beta particles using this technology have both been demonstrated. The extreme short range of tritium beta particles necessitates an optimization of the detector system. In this paper, the authors will discuss these new designs.
Download or read book The impact of tritium contamination of air humidity and ground water on the tritium concentration of tissue water in plants studied under real conditions written by Szczesny W. Rosinski and published by . This book was released on 1977 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book THE IMPACT OF TRITIUM CONTAMINATION OF AIR HUMIDITY AND GROUND WATER ON THE TRITIUM CONCENTRATION OF TISSUE WATER IN PLANTS STUDIES UNDER REAL CONDITONS written by S.W. Rosinski and published by . This book was released on 1977 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modelling the Environmental Transport of Tritium in the Vicinity of Long Term Atmospheric and Sub surface Sources written by Biosphere Modelling and Assessment (Program). Tritium Working Group and published by IAEA. This book was released on 2003 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: The BIOMASS (Biosphere Modelling and Assessment Methods) programme seeks to improve methods of assessing the impact of radionuclides in the environment (any man-made or natural element that emits radiation and that may cause cancer after long term exposure through drinking water). This report describes the results of studies undertaken by the Tritium working group established to identify gaps in modelling approaches regarding the transfer of radionuclides in particular parts of the biosphere of potential radiological significance. It discusses six model test exercises and the field sampling programme undertaken to environmental spread of tritium in long term atmospheric and sub-surface sources.
Download or read book Savannah River Site Mixed Waste Management FacilitySouthwest Plume Tritium PhytoremediationEvaluating Irrigation Management Strategies Over 25 Years written by Susan Riah and published by . This book was released on 2004 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: To minimize movement of tritium into surface waters at the Mixed Waste Management Facility at the Savannah River Site, tritium contaminated seepage water is being retained in a constructed pond and used to irrigate forest acreage that lies above the pond and over the contaminated groundwater. Twenty five-year potential evapotranspiration and average precipitation are 1443 mm/year and 1127 mm/year, respectively, for the region in which the site is located. Management of the application of tritium contaminated irrigation water needs to be evaluated in the context of the large amount of rainfall relative to evapotranspiration, the strong seasonality in evapotranspiration, and intraannual and inter-annual variability in precipitation. A dynamic simulation model of water and tritium fluxes in the soil-plant-atmosphere continuum was developed to assess the efficiency (tritium transpired/tritium applied) of several irrigation management strategies.
Download or read book Ground Water Monitoring written by J. H. Horton and published by . This book was released on 2003 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the results of a study to determine the usefulness of tritium as an aid in tracing ground water near radioactive waste ground disposal areas.
