I'm not caught up yet on this thread, so the Hobbit might have answered this already. Painting isn't an option - simply too much water coming in (up to 10-20 gallons a day). There's standing water within minutes. The immediate answer is trenching and sump well/pump in the slab on that part of the foundation. The suspicion is that there's a small spring back there - it is highly unlikely the current flow is still from the rains nearly 2 weeks ago. The area we are in is full of small springs, and they think the added water pressure just overcame the sealing that was done (something like Drylok). Eventually, I'll probably want to try do do something on that side of the house on the outside, but we'd be talking about excavating many feet deep (the seepage is about 11 feet below grade), so a major expenditure that's not possible right now. So, hoping the sump pump can handle things, as that's only $1,500.