REMEDIAL POLICIES IN RADIOLOGICALLY-CONTAMINATED FORESTS - ENVIRONMENTAL CONSEQUENCES AND RISK ASSESSMENT

As a result of the Chernobyl nuclear power plant accident in 1986, lar ge forested areas in Europe were contaminated by radionuclides. Extens ive societal pressure has been exerted to decrease the radiation dose to the population and to the environment. Thus, in making abatement an d remediation policy decisions not only economic costs, but also human and environmental risk assessment are desired. Forest remediation by organic layer removal, one of the most promising cleanup policies, is considered in this paper. Ecological risk assessment requires evaluati on of the radionuclide distribution in forests. The FORESTPATH model(( 1,2)) is used for predicting the radionuclide fate in forest compartme nts after deposition as well as for evaluating the application of the remedial policy. Time of intervention and radionuclide deposition prof ile was predicted as being crucial for the remediation efficiency. Ris k assessment conducted for a critical group of forest users in Belarus shows that consumption of forest products (berries and mushrooms) lea ds to about 0.004% risk of a fatal cancer. Cost-benefit analysis for f orest cleanup suggests that complete removal of organic layer is too e xpensive for application in Belarus.