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Berkeley Lab was responsible for hydrological (unsaturated flow, drift seepage and radionuclide transport) and thermal-coupled process testing and modeling. The modeling program addressed some of the most compelling issues for the repository program, including:
Studies of the unsaturated zone at Yucca Mountain are highlighted in the Safety Analysis Report (SAR) submitted to the NRC in June 2008. The SAR summarizes the modeling, analysis and current understanding of fluid flow, drift seepage, chemical transport, and thermal coupled processes in the unsaturated zone. Detailed documentation of the work is provided in numerous supporting technical reports referenced by the SAR. The technical work performed by LBNL for the Yucca Mountain Project was used for screening evaluations of features, events, and processes associated with the repository system, to assess the contributions of the natural barriers to prevent or reduce the rate of movement of water or radionuclides, and as inputs for total system performance assessment dose calculations.
The following links provide information on specific modeling studies conducted under the numerical modeling program: