I am a Principal Geochemist at Summit Water Resources, the Pacific Northwest affiliate of Geo-Logic Associates, Inc. I have over 20 years of experience evaluating site geochemistry and the fate and transport of inorganic and organic contaminants in the environment. I am an expert in the geochemistry of arsenic, trace metals, and isotopes, and in developing geochemical and reactive transport models to predict the long-term fate of these and other constituents in groundwater and sediment systems. My consulting practice includes forensic identification of contaminant and groundwater recharge sources, determining background geochemical conditions affecting contaminant mobility, demonstrating the effectiveness of monitored natural attenuation (MNA), designing and evaluating groundwater treatment and soil fixation remedies, and evaluating geochemical compatibility for managed aquifer recharge (MAR) projects. I have authored numerous publications on contaminant geochemistry and geochemical modeling.Specialties: • Geochemistry• Contaminant Fate and Transport• Environmental Forensics • Reactive Transport Modeling• Monitored Natural Attenuation• Managed Aquifer Recharge