This paper is part of a comprehensive study on soil pollution with liquid petroleum products. An experimental model to simulate the natural state of soil horizons was imitated in the laboratory. By cracking underground or aboveground pipes, which carry liquid petroleum products, the ground - underground - groundwater system undergoes changes. If immediate action is taken, the system is less affected and remediation does not require costly techniques. If the accident is found after a long time, the oil stain can seriously affect the soil and remediation methods do not provide good efficiency. Pollutant migration, in the proposed arrangement, has been studied for several soil types. For each soil type there were determined: capillarity, permeability and retention capacity, size distribution and density. Pollutant migration, a petroleum product, was studied both on horizontal and vertical direction. There were calculated the travel speeds of pollutant in the two directions and it was measured the width of the oil spill. Future research aims the remediation of these soils through methods that can be applied in the laboratory.
