I'm not sure they forget about cleanup for nuclear so much as it just isn't included for any power generation method. The residual ash from coal plants are cal

I'm not sure they forget about cleanup for nuclear so much as it just isn't included for any power generation method. The residual ash from coal plants are called coal tailings. They basically contain everything in the coal that didn't burn. Currently this is all piled up near the coal power plant. So you have chemicals like mercury, arsenic, and lead, as well as a smattering of radioactives like uranium sitting in a pile. Occasionally weather washes out these "piles" and they find their way into streams or leach through the underlayment to hit the ground water. When a coal plant is decommissioned the owner files for bankruptcy and the pile of coal tailings becomes another Superfund site. Yet somehow nuclear is different. Even though if nothing is done, in a thousand years the coal tailings will still be just as toxic as today. While the radioactive waste will be near a background.