Andy Garrabrants is an Associate Research Professor of Civil and Environmental Engineering at Vanderbilt University in Nashville, TN. He has developed leaching protocols, interpreted methodologies, and assessed models, primarily for inorganic constituents in hazardous, radioactive, and mixed waste systems. His research focuses on continuing development and acceptance of standardized approaches toward environmental impact assessment of solid wastes and construction materials and reuse of the byproducts of energy production and industrial processes. Other research interests include (i) release assessment approaches for semi-volatile organics in soil/cement mixtures (e.g., in-situ stabilized soils), (ii), physiochemical models for estimating source terms for risk assessment and risk evaluation, and (iii) leaching chemistry and long-term durability of cement-based solidification/stabilization (S/S) waste treatment and cementitious engineered barriers for nuclear waste disposition. He is actively involved with ASTM International D-34 Committee on Waste Management subcommittees for Treatment, Recovery and Reuse and Waste Leaching Techniques and in the ITRC Solidification/Stabilization team. Andy earned a Bachelor of Science (1994), a Master of Science (1998) and Doctor of Philosophy (2001) in Chemical and Biochemical Engineering at Rutgers, the State University of New Jersey in New Brunswick, New Jersey.