If I follow your link, I read this: Over the past four decades, the entire industry has produced about 62,500 metric tons of used nuclear fuel. That's the high-level waste.
The rest of the comment goes on to explain that including all low- and intermediate-level waste, plus legacy waste from military activities, then it may reach the millions of cubic feet you're citing.
Low-level waste is not much more dangerous than the extra natural radiation you receive from a plane trip, so the real danger is high-level waste. And that can fit in a fraction of the space required for a single solar park.
If I follow your link, I read this: Over the past four decades, the entire industry has produced about 62,500 metric tons of used nuclear fuel. That's the high-level waste.
The rest of the comment goes on to explain that including all low- and intermediate-level waste, plus legacy waste from military activities, then it may reach the millions of cubic feet you're citing.
Low-level waste is not much more dangerous than the extra natural radiation you receive from a plane trip, so the real danger is high-level waste. And that can fit in a fraction of the space required for a single solar park.