Scott and company had to demo existing pad, remove saturated mud/clay, replace with drain rock and install weeping tile to sump pump. Then, they planned and installed new exposed concrete pad, 6" plus with a hard edge to 10" plus. I have a high water table which had to be considered. As such, the new Pad is now resting on a 10"X10" grade beam at the outer edge of the Pad. In addition, 12 screw piles have been installed to mitigate any sinking of the Pad and grade beam and as insurance against any lifting or heaving, 2" and in some places 4"inch foam was installed under the new Pad. (roughly 350 sf). Then sealed properly. Great job. I'm very satisfied.