This two-volume report presents information on in-place treatment technologies applicable to contaminated soils at shallow depths. This volume provides background information and relevant chemical data. The information presented on monitoring to determine treatment effectiveness, characterization, and evaluation of the behavior and fate of hazardous constituents in soil/waste systems, and properties (including adsorption, degradation, and volatilization parameters) for various compounds is intended to help the user in making more complex decisions and in selecting analyses concerning site, soil, and waste interactions.