I can't speak specifically to those numbers off the top of my head.
Radioactive waste, by its very nature, decays over time. As it decays, it becomes less radioactive, if you will. During that process...So some of these wastes, that we have in our inventory today, have been with us for many, many years. When you go back to reassess what the waste is, and what its characteristics are, you will find that it's not as radioactive as it once was.