Gerald Grisak, PG, Sr. Vice President/Principal Hydrogeologist

512-425-2000
grisak@intera.com

MS, Hydrogeology, University of Waterloo, 1973
BS, Geology, University of Alberta, 1971

Gerry Grisak is a registered Professional Geoscientist and Hydrogeologist with 35 years of experience in the areas of geologic and hydrogeologic characterization, groundwater and soil contamination, site remediation, and regulatory compliance. He has applied this expertise to projects involving the siting of radioactive waste disposal facilities, the investigation and remediation of contaminated Superfund, leaking petroleum storage tank, U.S. Department of Energy and Department of Defense, mining, petroleum refinery, and other industrial sites, and permitting of hazardous waste storage and disposal sites.  As a recognized expert in contaminant hydrogeology in porous and fractured media, Mr. Grisak is frequently retained to provide litigation support and expert testimony for cases involving forensic contamination investigations and liability and cost allocation among responsible parties. He has led interdisciplinary geoscience investigations to support obtaining Resource Conservation and Recovery Act (RCRA) permits for proposed and existing hazardous and chemical waste disposal facilities. These projects have included gathering geologic and hydrogeologic data from drilling, trenching, and sampling programs, developing detailed hydrogeologic conceptual models, and conducting flow and transport modeling to evaluate the movement of potential contaminants in the subsurface. Mr. Grisak has developed major technical investigation programs to support site suitability evaluations and facility performance assessments for national radioactive waste programs in the U.S., Canada, and Switzerland. He has also provided consulting and investigation services to the mining industry in Texas, New Mexico, Arizona and Utah, and played a key role in the successful decommissioning and closure of a Title II uranium mine and milling facility in New Mexico. As a Senior Vice President, Mr. Grisak has served as INTERA's Principal-In-Charge on several key contracts involving the development of groundwater availability models for major and minor aquifers in Texas and the investigation and remediation of Superfund, LPST, brownfield, and abandoned oil and gas exploration and production sites in Texas and New Mexico.