This work presents the results of geophysical surveys performed over an oil contaminated site in the Polo Industrial de Cubatão - São Paulo. The aim is to characterize geoelectrical signatures associated to hydrocarbon presence in order to delimit and calculate the volume of the contaminated area. For this study were used Vertical Electrical Sounding (VES) and 3D Electrical Imaging for characterization of geology and geoelectrical response of the contaminant. The results showed that the hydrocarbon presence is associated to conductive anomalies due to products from biodegradation. The conductive anomalies are disseminated over the area, totalizing 1365.3 m³ volume. This volume, however, corresponds only to the residual phase contaminants, since it was not possible to map free-phase hydrocarbons.
applied geophysics; 3D Electrical Imaging; hydrocarbon biodegradation; conductive anomalies
