These proceedings contain a comprehensive collection of topics embraced by the field of environmental geotechnics. The areas covered are: the design and performance criteria covering legislation, regulations and related recommendations; the evaluation of geotechnical parameters; analytical and numerical techniques; and mine waste and underwater geoenvironmental issues, including reclamation of mined areas, decommissioning of tailing dams, and dredging material issues. It also discusses: the risk assessment of contaminated sites, including the fate and transport of contaminants; monitoring techniques aiming at risk evaluation and risk assessment; the management of contaminated sites, covering investigation of contamination; barrier efficiency evaluation; co-disposal and re-use of industrial wastes and monitoring natural attenuation; remeditation, covering evaluation of pump-and-treat techniques; techniques for soil and groundwater remediation in the vadose zone; and techniques for soil and groundwater contamination in the saturated zone.