We've done a small study for one of the companies on one of their existing dikes. From that, we identified that in fact process-affected water was able to get beyond their ditch, which was their collection system. Fortunately, they had another ditch further out that seemed to be collecting everything.
We were advising them that if they were going to rely on this single-ditch system, they should pay a little more attention to the possibility of groundwater underflowing it, meaning going under it. A critical issue seemed to be maintaining the ditch. Sand gets blown in, and it stops operating as effectively as it did. We've identified those issues as something they can do during operation to limit the impact they might have.