An approach towards minimization of sample analysis costs for mixed radionuclides using MARSSIM for a final status...

Radiological characterization of a site provides extensive information beyond that associated with the extent of contamination. A detailed analysis of characterization sample results will identify the mix of radionuclides present and possible interrelationships between the radionuclides. Once a set of Derived Concentration Guidelines Levels are established, it is possible to optimize a sample analysis protocol based on the relative importance of each radionuclide to the anticipated final dose calculation. In some cases the radionuclides identified during characterization will include a complex mixture of easy and hard-to-detect radionuclides including alpha emitters. The approach developed in this paper considers the percentage contribution of each radionuclide to the dose estimate. This discussion is limited to cases where analytical laboratory analysis of soil samples has been determined to be the appropriate method to demonstrate compliance with the regulatory criteria stated in the form of Derived Concentration Guideline Levels.