 you know, roughly 300 years, that's the proposal. And that's how long strontium-90 will be a risk to cause cancer if you use the groundwater at this area. But it goes far beyond that. Thousands and tens of thousands. The half-life of plutonium is 24,000 years. And a rule of thumbs, it takes, you know, 10 half-lives for this stuff to decay to a level where you don't have to worry about it as much