Dr. John Villinski is a Senior Project Hydrogeochemist/Hydrologist with over 17 years of experience designing studies to investigate the fate and transport of reactive and non-reactive chemical species, including metals and volatile organic compounds (VOCs).  His areas of specialization include collecting and interpreting geochemical, hydraulic, and pneumatic data; applying numerical modeling techniques to hydrologic and hydrochemical problems; and risk assessment of groundwater, surface water, and soils.