Recently experience has made clear that, in order to protect the environment, the most economical way to prevent the pollution is to take a preventive position still from the projection stage. In accordance with current legislation any investor is obliged to investigate the compatibility of his project with the preservation of the environment’s enquiries and human’s area of living. He has to apply into practice the whole pack of technical and economical measures in view to reduce the negative consequences of its activities on the environment. When technical measures are not sufficient, it mean that the negative impact cannot be eliminated or even reduced, the investor has to make some compensatory actions by undertaking the total cost of its implementation. All these considerations have made that in the last period of time we pay a highly attention to the relation between economy and ecology, including the environment’s preservation. Thus is developed the domain of ecological economy or eco-economy.