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HIGH RESOLTUION GEOELECTRICAL MEASUREMENTS OF BIODEGRADATION AND SURFACTANT REMEDIATION: LAB AND FIELD STUDES AND A NEW CHARACTERIZATION TEST CELL FIELD RESEARCH SITE
Citation:
WERKEMA, D. D. AND S. P. GARDNER. HIGH RESOLTUION GEOELECTRICAL MEASUREMENTS OF BIODEGRADATION AND SURFACTANT REMEDIATION: LAB AND FIELD STUDES AND A NEW CHARACTERIZATION TEST CELL FIELD RESEARCH SITE. Presented at High Resolution Site Characterization & Monitoring Symposium, Long Beach, CA, November 14 - 16, 2006.
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:
Laboratory and field high vertical resolution geophysical research has shown that geoelectrical measurements can detect and monitor the natural attenuation of petroleum hydrocarbons. These results have lead to the continued development and refinement of the conductive model for hydrocarbon contamination during natural attenuation. Secondly, surfactant enhanced aquifer remediation is a practical remediation strategy for dense non-aqueous liquids. Full experimental design laboratory experiments show that some of the typically used surfactants result in considerable electrical conductivity enhancements.
Future larger scale high resolution experiments will be conducted in EPA's new Characterization Test Cell (CTC) being constructed at the Naval Base Ventura County. The CTC will be a large scale field test facility where these high resolution geophysical methods, new geophysical methods, and groundwater sampling technologies will be researched and developed. The CTC will be an important tool in the understanding of high resolution subsurface measurements and in the collaboration and multidisciplinary
science between government, academia, and industry.