A Trial of groundwater flow analysis in surface and near-surface environment for the development of biosphere assessment modeling

Itazu, Toru; Kato, Tomoko ; Inagaki, Manabu; Maekawa, Keisuke  ; Suzuki, Yuji*; Oyamada, Kiyoshi*

On the performance assessment of HLW Geological Disposal, we must evaluate the human impact of radionuclides delivered to the ground surface by groundwater flow, which evaluation requires the setting of pathways of the radionuclides and the estimation of dilution effect. In this presentation, for development of methodology for biosphere assessment modeling including the dilution effect with the site-specific information in the stage of site selection, we show the examination of the methodology through trial of groundwater flow analysis in surface and near-surface environment of Horonobe by using existing literature.