Multidimensional simulation of radon diffusion through earthen covers

Abstract

The particular cover studied had a compacted clay layer that effectively attenuated the radon. Field results from Grand Junction, Colorado were compared with onedimensional model simulations. Some field tests were in good agreement with the model predictions, but most of the tests showed large flux variations and were, in general, not predicted by the one-aimensional simulations. In the future, additional source term characterization and detailed monitoring of soil characteristics and atmospheric variables will be required so that more reliable field data can be obtained for model verification.