Soil contamination is recognized as a significant environmental and public health concern. This state-of-the-art report features critical evaluations of 16 environmental fate and risk assessment models/approaches for dealing with contaminated soils. The evaluations were conducted by the Council for the Health and Environmental Safety of Soils (CHESS), a select board of highly-respected scientists from the federal government, state departments of public health and environmental protection, the private sector (including industry and environmental organizations), and academia. Each chapter provides a description of a model/approach with references to direct readers to more detailed information. The evaluations of each model/approach discuss the basis of the methodology in science, its applicability, its ability to address multiple environmental media, data input requirements, and general strengths and weaknesses. Risk Assessment and Environmental Fate Methodologies is a critical reference guide for groundwater and hazardous waste cleanup professionals, regulators, oil company officials, consultants, and libraries.