[GWN7]

When they excavated for the house next door they found two types of soil running thru the property. The split of the soil was right over where the house was going to be built. You could see the two types of soil with your eye. One type was a potters type of clay and the other was a crumbly type of clay. Both clays, but both different and with different building properties. That's why they went to the expense of using the ground hogs to anchor the foundation.