The paper presents a study on the pollution of the soils with oil and salted water. It has been simulated the pollution with oil and salted water of a terrain and it have been extracted samples from 2 cm, 20 cm and 60 cm depth. The samples were analyzed and compared with a sample of unpolluted soil. The researches were used for elaboration of a cleaning technology using specialized microorganisms. The chemical and microbiological characterization of the soils has been realized with standard methods.