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CAN GEOELECTRICAL METHODS BE USED TO MONITOR NAPL REMEDIATION EFFORTS?
Citation:
WERKEMA, D. D. CAN GEOELECTRICAL METHODS BE USED TO MONITOR NAPL REMEDIATION EFFORTS? Presented at EPA 2005 Science Forum, Washington, DC, May 16 - 18, 2005.
Impact/Purpose:
Research is being conducted to improve and evaluate the resolution of the CR, EM, seismic, and GPR methods over complex geological formations (such as fractured geologies) and to evaluate the capability of these geophysical methods to delineate subsurface organic contaminants.
Description:
EPA's Strategic Plan includes the research and development of improved methods for evaluating the long-term performance of monitored natural attenuation. This ground water research need is part of GPRA Goal 3, sub-objective 3.3.2 for Superfund and Oil Program Research Priorities and includes research and development for all non-aqueous phase liquid remediation. Geophysical techniques show promise as part of this research effort through the evaluation Of non-aqueous phase liquid remediation. Specifically, geoelectrical methods can detect changes in the conductivity of the subsurface as related to these remediation activities. This poster presents fmdings demonstrating that the electrical properties of remediated zones are altered due to remediation activities and these changes are measurable by direct current geoelectrical methods.