Reconstruction of Contamination Migration Based on Advanced CPTe Data

The precise environmental diagnostics requires the knowledge of main subsurface flow directions where the contamination could migrate. Using an advanced CPTe method with nuclear logs the detailed subsurface structure can be reconstructed and also the grain size distribution can be determined. Based on this information the accumulation zones and the migration routes can be identified. The migration process takes time while the degradation of the hydrocarbon contamination is going on. Laboratory tests proved that during this process the electrical properties of the hydrocarbon change significantly. It means that from the electrical resistivity of the contaminated soil may refer to the degree of degradation and consequently to the migration time. This study presents a field experiment focusing on the determination of migration routes of subsurface hydrocarbon contaminants based on the data of advanced CPTe data.