Randolph C. Arthur, PhD, Senior Scientist

303-985-0005
rarthur@intera.com

PhD, Geochemistry and Mineralogy, Pennsylvania State University, 1983
BS, Geology, California State University, 1975

Dr. Arthur has 23 years experience in field, experimental and theoretical modeling studies of the long-term stability and performance of engineered and natural barriers to radionuclide migration from geologic repositories for nuclear wastes. He is a geochemist with specialized expertise in the areas of: 1) actinide and fission-product geochemistry, 2) geochemistry of natural waters, 3) thermodynamic, kinetic and mass-transfer constraints on fluid-rock interactions in natural and waste-disposal systems, 4) development of internally consistent thermodynamic and hydrochemical databases, and 5) interpretation of chemical, isotopic, mineralogical and geophysical data characterizing deep groundwater systems at international sites selected for the development of underground research laboratories (URLs). Dr. Arthur has extensive experience in the use of geochemical modeling techniques and software, including SUPCRT, Geochemist’s Workbench, EQ3/6, PHREEQC, MINTEQA2, HYDROCHEM and TOUGHREACT. He has consulted for nuclear waste R&D organizations and regulatory authorities in the U.S., Canada, Japan, Taiwan, U.K., Sweden, Finland and Switzerland. Dr. Arthur has authored numerous articles in peer-reviewed journals and in technical reports published by national R&D organizations in the U.S., Europe and Asia.