That's why we did some modelling, which I can show you.
This is from a company that used LIDAR to do gasometric analysis of the river. This is actually a model of what it will look like after Kiewit does all the work and removes all the rock.
You can see the colours that relate to water velocity. The rock went so far out that it hasn't been reached yet by Kiewit's blasting, so it's still going to create a barrier, as indicated. That's based on our best knowledge right now of where the rock is and our ability to remove it.