Pond Boss Forums POND CONSTRUCTION Soil questions Hit sand and water,, what to do?

Hi all
Update: We did not get to work on the lake last year, but it was a good test to see if it would hold water and in 3 different test holes all held water. We also discover that beneath the sand is clay. There is a 2 foot thick layer of sand.
Here are some videos of the lake progress and some haul truck action.
Wish it would stop raining for a day.