Modelling of contaminants migration in ground waters

In 2009-2010 the area around radioactive waste storage facilities of the Kirovo-Chepetsk branch of RosRAO was hydrogeologically surveyed (it included drilling of boreholes, experimental filtration and experimental migration activities and observations, radiochemical surveying) then a network of hydrogeological monitoring was created, geofiltrational (GF) and geomigrational (GM) modelling was performed at a section of the Vyatka river near the city of Kirovo-Chepetsk. It is shown that covering the storage facilities with water-proofing materials will ensure complete elimination of ground waters contamination with 90Sr, the area of contamination with 238U will be localised within 100 meters from the dam of section 3 of the sludge collector. It is pointed out that monitoring of subsoil around the radioactive waste storage facilities must continue after the implementation of rehabilitation measures and based upon the results of GF- and GM-modelling, which in their turn, will need to be revised as more up-to-date information about the status of the facility becomes available