Yep. Sounds like they need to flush it all, sterilize the liner, fill it back up and wait for the animals to pee in it.
Only in Portland could this idiocy happen.
Good Lord, our local water reservoir allows fishing and as a kid I took many a leaks in it, along with about every fisherman on the lake. Whats the point of filtration, chlorine, etc...?
Some people have way too much time on their hands and are doing this idiocy to justify their positions and budgets.
Some mischievous kid will wait until they’re all done cleaning, sterilizing, and testing then whiz in it again.