I personally volunteer my backyard. My neighbors will probably disagree with me, but all I require is $100 per household-year of high level waste generated. Since nuclear power generates approximately 1 coke can worth of waste per year of powering a household, a 55 gallon concrete cask will hold 586 households worth of waste for a year.

My disposal plan will add approximately half a cent per kilowatt hour to the price of electricity, and I have a minimum order size of 10000 casks, or the waste of 5,860,000 households. My half billion dollars will be primarily invested in: 1) storing the casks in my backyard as a depot while I load them onto a container ship. 2) A single container ship which I'll float over deep ocean trenches, dodge hurricanes, and run fuel and supply ships out to. 3) Approximately 1/4th of a presidential campaign ($250 million) worth of advertising, marketing, and education about the safety of 3rd generation nuclear reactors.

I will then sell the "waste" back to the resulting 3rd generation reactors for $100,000 per cask (for around 5000 household-years worth of energy per cask). I figure I should net a profit on the scheme of around a billion dollars per iteration of this scheme, once I factor in my expenses.

Seriously. The "waste" problem is not a problem. It's a massive profit opportunity waiting for an entrepreneur.