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Presenting a clear, understandable examination, this book outlines efficient, effective methods and strategies for the complex field of subsurface remediation. The editors fully assess the state-of-knowledge of subsurface science requisite for finding new solutions, providing a focused guide for advanced subsurface remediation technology. Unparalleled in scope and practicality, Subsurface Restoration assists those persons determining the extent of environmental contamination for remedial technology selection and for environmental decision-making at all levels.
This report provides a survey of remediation and treatment technologies for contaminants of concern at environmental restoration (ER) sites at Sandia National Laboratories, New Mexico. The sites that were evaluated include the Tijeras Arroyo Groundwater, Technical Area V, and Canyons sites. The primary contaminants of concern at these sites include trichloroethylene (TCE), tetrachloroethylene (PCE), and nitrate in groundwater. Due to the low contaminant concentrations (close to regulatory limits) and significant depths to groundwater ({approx}500 feet) at these sites, few in-situ remediation technologies are applicable. The most applicable treatment technologies include monitored natural attenuation and enhanced bioremediation/denitrification to reduce the concentrations of TCE, PCE, and nitrate in the groundwater. Stripping technologies to remove chlorinated solvents and other volatile organic compounds from the vadose zone can also be implemented, if needed.
Keywords: groundwater modeling, subsurface flows, soil stratigraphy, wetland restoration.
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This authoritative text addresses the latest in bioremediation technologies for three difficult-to-treat contaminant groups: chlorinated solvents, PCBs, and PAHs - one of the most complex and expensive areas of applied remediation engineering. Bioremediation of Recalcitrant Compounds assesses innovative R&D projects developed for each contam