ABSTRACT
The generation of waste materials, toxic chemicals, and other hazardous materials has become one of the most emergent problems to which society should find solutions not only in Japan but in the world. The disposal and dumping of such materials caused geoenvironmental problems, typified by contamination in the subsurface ground. For the positive utilization of such contaminated land space especially in small countries such as Japan, various treatment techniques have been developed in these decades.Although excavation of the contaminated soil and subsequent disposal to landfills are one of the most conclusive methods in terms of complete removal of the contamination, with this method, the contaminants are just transferred to a different place. Thus, more reasonable and environmentally friendly countermeasures with minimum transference of the contaminants are required.
