In PREMChlor, all of the uncertain input parameters are treated as stochastic parameters represented by probability
density functions. The outputs from PREMChlor are probability distributions and summary statistics for the
distributions. Cost analysis of common technologies for DNAPL source removal and dissolved plume treatment are
included. PREMChlor gives users a single platform in which cost, source treatment, plume management, monitored
natural attenuation, and risk assessment can all be evaluated at once, and in which uncertainty can be incorporated
into the site decision-making process.