Radiological protection principles concerning the use for forest and agricultural purposes and as public gardens (parks) and residential areas of areas contaminated from uranium mining

With regard to uses of contaminated areas for forest and agricultural purposes as well as for uses as public gardens (parks) and residential areas, all relevant exposure pathways have to be evaluated. Assuming conditions as realistic as possible but sufficiently conservative, the dose estimates reveal that the external gamma dose rate and the potential activity input into the ground water are exposure pathways of relevance for all uses of contaminated areas considered here. Additional specific exposures pathways of relevance in cases of uses as residential areas and as public gardens are the ingestion of dust and soil contaminated with long-lived alpha emitters by children playing outdoors as well as the consumption of local products in cases of agricultural uses. (orig./DG)