The primary purpose of this research project is to incorporate parameter uncertainty into the development of multicriteria planning and management tools for groundwater quality problems. We have focused upon three criteria - cost, water quality, and sensitivity. We have also focused upon a particular type of management strategy - the use of injection and extraction wells to control and remove a contaminant plume. Two different stochastic management tools have been developed in this project - the Marginal Sensitivity Technique (MST), and the Parameter Configuration Technique (PCT). The former technique designs a 'best' pumping scheme with respect to cost and parameter sensitivity and determines the tradeoff between these two criteria. The latter technique seeks to identify unfavorable (but physically plausible) spatial distributions of groundwater parameters.