USE OF SURFACE SEISMIC AND ELECTRICAL RESISTIVITY DATA TO CHARACTERIZE A GASOLINE IMPACTED SITE

Underground storage tanks and their associated lines are a common source of LNAPL as gasoline in the subsurface. Most of these sites are in urban areas which can limit the effectiveness of geophysical techniques for investigating these areas. A site in Enid, Oklahoma has been previously used to investigate the use of electrical resistivity to investigate LNAPL movement. To improve the interpretation of the electrical data, surface wave seismic data were acquired to evaluate the lithology of the subsurface. The seismic data were processed using the KGS MASW methodology. The technique was compared against core and well data for the site to determine the effectiveness of the technique.