“ Environmental Forensics ” makes use of the scientific methods and techniques to judge and identify the responsibility of the pollution by way of the properties of the pollution, migrations of the pollution, and the research of the correlations of the potential sources. Environmental Forensics Technology is different from the Site Assessment Technology. This report completes : (1) The collection and analysis of the current development in environmental forensics of the foreign countries, such as the United States, Canada etc., and the information of the domestic techniques and capabilities, including the domestic institutes with environmental forensics capabilities, chemical fingerprinting technique, and the case studies. Besides these, this report also designs the homepage of the environmental forensics for Environmental Protection Administration of Republic of China (EPA-ROC ) in order to let scholars, experts and people who need the information of the environmental forensics can find it. (2) To established the preliminary techniques of chemical fingerprinting for oils, such as the differentiation of the oil types with GC, the analysis of biomarkers, and the analysis of alkylated PAHs (polycyclic aromatic hydrocarbons) with GC/MS. (3) To hold a domestic workshop and an international workshop in environmental forensics on October 17, 2002 and November 7, 2002 respectively. These two workshops invite a lot of domestic and international scholars and experts in different fields of science and technology to participate in, and will be helpful for the integration of various fields of science and technology for environmental forensics in Taiwan. To write “ The Guide of Chemical Fingerprinting Technology in Environmental Forensics(manuscript)”, which is based on the previous experience of this research team. This guide can be used as a guideline of source identification for the future pollution events. The Environmental Forensics has made the domestic,

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