I can see where the leaks are, the soil consisted of about 50 inches of topsoil/sand/sandy-loam and then turned literally to solid clay, like a giant piece of modeling clay for the rest of the pond.
it it leaking right at the seam of sandy-loam and clay.
My tentative plan will be to use the clay spoils to pack and then compact the clay from 12" below the seam to grade.
I have a metal fabricating shop so I'm wondering if I can fabricate an attachment plate for the bottom of the compactor to turn it into a "sheepsfoot-like" compactor. i understand the sheeps-foot works to roll and knead the clay and the compactor just uses vibration and mass but???
any thoughts?
at this point the compactor seems my only cost-reasonable choice.
