How should previously disposed of depleted uranium be addressed by the disposal facility sites?
Previously disposed of volumes of DU should be addressed through each site’s performance assessment. The performance assessment is meant to be a living tool for both the licensee and regulator to be able to assess future compliance of the disposal facility with the performance objectives in 10 CFR regulations protecting workers and the public and ensuring long-term stability of the disposal site after it is closed (Part 61.41-61.44). During the licensing of a disposal site, assumptions must be made about the possible final inventory of a site or a specific disposal unit within a site based on expected waste volumes and streams. As operations occur, the uncertainty in the inventory decreases as actual waste volumes, constituents, and concentrations are known. The performance assessment should be regularly updated with these actual values and any revised information of future waste to be received. The results of the performance assessment can then be used to evaluate whether there is rea
