Risk Assessment Methodology for Determining Groundwater Contamination from Landfilling Sludge

Contaminant concentration criteria are required to prevent contaminant infiltration from leading to conditions which exceed health criteria. A methodology of groundwater has been described which may be used to select those criteria and quantify concentrations associated with placement of a given sludge in a designated landfill. However, in addition to the use of the model and good management practices a comprehensive monitoring program should be implemented with any sludge disposal alternative. In the case of landfills, this would consist of monitoring wells to detect groundwater contamination from infiltration.