The overarching goal of the course is to develop environmental thinking related to (1) assessing the severity of a contaminant release in the subsurface, (2) recognizing the physical-chemical-biological mechanisms that affect the fate and transport of the released contaminant and, (3) selecting appropriate remedial measures and/or technologies. Course objectives are met if at the end of the semester students (a) can locate reliable data on the effects of contaminants on human health, (b) are confident in applying principles of mass transfer, groundwater flow and contaminant transport to problems of contamination and restoration of the subsurface, (c) are able to address the geoenvironmental aspects of landfill and clay barrier design, (d) are familiar with a wide range of remediation technologies, (e) are able to take initiatives related to modeling (i.e., related to the formulation of a simplified problem that admits solution) and, (f) are aware of some social or public policy dimensions of subsurface contamination and restoration problems. Course contents include the following. Cases of restoration of contaminated sites. Legislation. Sources and characteristics of contaminants. Risk assessment. Groundwater flow. Soil-contaminant interaction. Mechanisms affecting the fate of contaminants, contaminant transport, applications (practice in the use of an educational software in the School’s PC lab). Landfill liner design and materials. Remediation technologies for contaminated sites.