Results from the five drill holes confirm the presence of contaminants at all the interfaces. The contaminants have consistent strong "bitter apricot kernel" smell and pollutants in the sand are oil saturated and black. There are a large number of organic pollution components in the groundwater samples and at different depths in the sediment samples (Table 1). The soil samples obtained from drilling contain almost the same pollutants as groundwater, i.e. raw materials and products of chemical plant, which leave no doubt about the origin: a leakage form an underground storage tank.