The Citizen's Guide series is a set of 22 fact sheets that summarizes cleanup methods used at Superfund and other sites. A permeable reactive barrier, or “PRB,” is a wall created below ground to clean up contaminated groundwater. The wall is “permeable,” which means that groundwater can flow through it. This document can also be accessed at http://semspub.epa.gov/src/document/HQ/158715.

• A Citizen's Guide to Permeable Reactive Barriers (PDF)(2 pp, 968 K, 2012, 542-F-12-015)