Sanitary landfills presently provide an economical method for solid waste disposal. Numerous research projects sponsored by U.S. EPA have involved monitoring refuse test cells to provide a better understanding of the processes that occur within the refuse mass and the potential environmental effects of sanitary landfills. The research effort described in this report was undertaken to determine if leachate characteristics from several different test cells were similar. Normalized weighted mean leachate concentration histories and mass removals were compared graphically for two field-scale cells and three small-scale cells. A simple semi-empirical exponential model of leachate concentrations adequately described concentration trends. Identical performance of the test cells was not indicated from the data analysis, but rather a range of performance.