Bridget Scanlon is a Senior Research Scientist at the Jackson School of Geosciences, Univ. of Texas at Austin. She has worked for 20 years on unsaturated flow studies that included use of physical, chemical, isotopic, and numerical modeling of flow and transport in these systems. Her research included monitoring and modeling of alternative covers at a site in the Chihuahuan Desert in West Texas for several years. She has collaborated with researchers in DOE on modeling alternative covers at other sites. She has published many papers on these topics. She is currently serving as an Associate Editor in Hydrogeology Journal and Vadose Zone Journal. She has served on National Academy of Sciences and DOE review committees on vadose zone processes related to waste containment.