The reactor is still in meltdown and will be for at least a hundred years. The concrete ‘sarcophagus’ will eventually deteriorate and the molten mass of uranium it contains will sink into the ground water table.................
I guess, our grand children may be worried about that.
I am sure, they will find a fix.
Right now, if I were in charge, I would go there, and map the radiation levels.
Fence off the reactor and the few places where there are demonstratively high levels of radiation and declare all the rest OK!