Provides updated information on new developments and innovative approaches in applying PRBs to treat a variety of groundwater contaminants.

This guidance has been updated by the recent Permeable Reactive Barrier: Technology Update (PRB-5, 2011). The guidance is part of a series along with Regulatory Guidance for Permeable Reactive Barriers Designed to Remediate Inorganic and Radionuclide Contamination (PRB-3, 1999)Designed Guidance for Application of Permeable Reactive Barriers for Groundwater Remediation (PRB-2a, 2000), and Regulatory Guidance for Permeable Reactive Barriers to Remediate Chlorinated Solvents (PBW-1, 1999).

Topic(s): Chlorinated Solvents, Groundwater, Groundwater Monitoring, PRBs, Remediation Technologies