Carl Mendoza, Ph.D., P.Eng. (BC, AB, ON), P.Geo. (AB), has over 35 years of experience in physical and contaminant hydrogeology, including the vadose zone. He specializes in using field investigations and numerical models to understand complex hydrogeologic systems. He has worked with conventional oil-and-gas, oil-sand mining, hard-rock mining and forestry industries, for hydrogeological and environmental engineering consulting companies, and as a university professor. His physical hydrogeology expertise includes water resources, pumping tests and effective aquifer properties, regional flow systems and surface-water/groundwater interactions, plus seepage from tailings impoundments and unsaturated flow through reclamation covers. His contaminant hydrogeology expertise includes most aspects of subsurface transport analyses, including soil-gas transport in the unsaturated zone. Carl developed environmental, operational, reclamation and closure expertise through working at metal mines across Canada and oil-sand mines in Alberta. He taught undergraduate and graduate courses in hydrogeology for 25 years and has delivered short courses or workshops on numerous topics. He is a co-author of over 70 refereed scientific articles, 35 conference papers and 100 conference presentations.