Soil contamination is an increasingly important problems in Japan, and cleansing methods for volatile organic compounds (VOC) or heavy metals vary with site-specific characteristics. To ensure that we can handle a wide range of contamination situations, Tsuchiya-gumi has entered into a basic agreement for cooperation in soil remediation technology with Zueblin U.T. of Germany, which has considerable experience in removing contaminated soil. We hold exclusive rights for the technologies in Japan, and have dispatched two employees to Zueblin for several months to acquire a thorough understanding of the new technologies. A subsidiary of Ed. Zueblin AG, this environmental technology firm has its head office in Stuttgart, with branches in Berlin, Chemnitz, Dortmund, Hamburg and Nuremburg. The firm provides the full range of service for remediation systems, from manufacture and installation to maintenance and final cleansing. With remediation technology established through over 1000 deliveries in Germany and elsewhere, the firm has earned its high reputation in the field. Zueblin U.T.   1.Stripping system (volatilizes harmful substances in subsurface water)     2.Activated charcoal filter (absorbs harmful substances from soil and subsurface water for processing)     3.Bioreactor (uses microorganisms to remove harmful substances from subsurface water)     4.Ion exchange system (uses ion exchange to remove heavy metals and other substances from subsurface water)     5.Zueblin Ass. oil separation system (floats, separates and removes oils from subsurface water)     6.Bioremediation Onsite: Uses microorganisms to cleanse soil and subsurface contamination onsite. Offsite: Microorganisms are mixed into contaminated soil offsite for cleansing.