This storage has to stay safe for 100,000 years or so, so it won't be cheap. There are very few places on the planet that are dry enough and stable enough to make reliable storage possible. And the costs of creating inert containers - the current favourite is a copper/steel mix - aren't trivial.
So when decommissioning costs are quoted, it's worth remembering that they don't yet include this long term storage.
Now, considering that is looks more like a dirty, salty puddle, the base had to be relocated, due to safety reasons.
Funny, but the island was a state-protected national park back then. Almost no wildlife there now, is there? A patriot must always be ready to defend his country against his government -- Edward Abbey
Don't read it, you gonna be sick for at least a day. The struggle of man against tyranny is the struggle of memory against forgetting.(Kundera)
A couple of years ago I watched a Russian documentary about the island, in which they showed the bunkers with the stuff that were some sort of storage facility. A patriot must always be ready to defend his country against his government -- Edward Abbey
So I am not convinced that there is no solution to the waste problem. I personally think that it plays on our fears of an invisible killer more than anything else. There are lots of things that are really more dangerous to us and which we should worry about before (like most pollution from coal...) In the long run, we're all dead. John Maynard Keynes