Methods for analyzing the hydrogeological characteristics of the aquifiers in the vicinity of the Chornobyl nuclear power plant. In: Use of isotope hydrology to characterize groundwater systems in the vicinity of nuclear power plants. Results of coordinated Research Project (CRP) F33022, 2016-2020. p.p.165-179

An analysis of the radioactive contamination of groundwater (3H, 90Sr) at the industrial site of the Chornobyl Nuclear Power Plant was carried out. As a result of monitoring of the tritium volumetric activities and analysis of its distribution halos, the direction of groundwater movement near the 3rd and 4th units of the Chornobyl Nuclear Power Plant was estimated. To assess the filtration
parameters, an indicator bromide-ion in the form of NaBr was introduced into the aquifer.
The mathematical modeling of migration of the unsorbed indication on the way of filtration flow of the first from the surface alluvial aquifer underground waters was completed. The imitation modeling was performed to justify the use of isotope or indicator methods to obtain reliable data on aquifer parameters, in particular, the permeability coefficient. Three-dimensional geo-filtration model
was used and the verification of received predictive results with the results of the field observations was completed.
The Visual Modflow 2011.1 software package was used as a tool to determine the filtration parameters of the aquifer.