Sorry to hear of your setback with the pond budman. It�s nice to know that they were honest about your situation, but I guess if they�re going to guarantee the results they would have to be. It sounds like my next step would be to get them to check my soil. It�s pretty dense clay here in Kentucky but I was only left with a couple of feet (more or less) above the limestone bedrock that I suspect it leeching into. There�s no other evidence, like sink holes, that leads me to think otherwise. There �was� a spring at the base of the dam but, as suspected, it didn�t� have enough push to fight the water pressure. We drained the pool (or I should say it drained itself) and reworked the area by digging back into the flow and plugging it by packing with 5000 lbs of bentonite mixed with the native clay. The pond is about 3/4 acre and the drop is about 3 to 4 inches a day...both before and after the bentonite treatment. I may be in the same clay-hauling situation as you, but I guess the folks at Seepage Control can determine that.