Gary specializes in the development and application of high-resolution site characterization methodologies for the selection, design and implementation of advanced remediation technologies. He serves as a subject matter expert for industry clients in Europe, North America, South America and South Africa.
An Adjunct Professor at the University of Toronto, Gary was previously a Principal Research Scientist with the British Geological Survey and Research Fellow at the University of Sheffield. Gary is an Editorial board member of QJEGH and has published numerous research papers and best-practice guidance documents on the behavior of dense and light non-aqueous phase liquids (DNAPLs and LNAPLs) in intergranular and fractured bedrock aquifers and aquitards. He is co-author of a number of best-practice documents, including a Guide for NAPL Migration in Sediments (ASTM, 2019), Integrated DNAPL Site Characterization and Tools Selection (ITRC, 2015), and a Generic Work Plan to Assess Dense Non-Aqueous Phase Liquid Mobility in the Subsurface at Manufactured Gas Plant Sites (EPRI, 2015), and An illustrated handbook of LNAPL transport and fate in the subsurface (CL:AIRE, 2014). He has significant experience as a technical training instructor on leading-edge professional development courses on five continents, including co-presenter of the prestigious Princeton Remediation Courses.