The current project was undertaken before the scheduled site closure to obtain information useful to designers of future landfill facilities. Information was developed on cover soils, refuse, leachate collection systems, lining materials, and contaminant migration from the test cells. To examine and recover cell components, exploratory excavations were made through the refuse and base liners. Each of the cell elements (cover, refuse, liners, etc.) were thoroughly documented, and samples underwent extensive testing. The project included the recovery and detailed inspection of clay and synthetic liners that had been exposed to leachate for approximately 9 years. Both field and laboratory testing showed that little degradation of the liner materials had occurred during these years of service.