Geotechnical and Geophysical Site Characterization collects the papers presented at the Third International Conference on Site Characterization (ISC’3) that took place in Taipei from April 1-4, 2008. The subjects covered include new developments in mechanical in-situ testing and interpretation techniques, statistical analysis of test data, geo-environmental site characterization, soil sampling methods, multi-dimensional geophysical imaging techniques, residual/unsaturated soil characterization, and case histories that involve major construction projects or disaster investigations. Over 200 papers, twelve keynote lectures and the third Mitchell lecture were presented at the conference. Geotechnical and Geophysical Site Characterization provides a wealth of valuable information for practicing engineers as well as researchers worldwide.