Thank you jheidt2543 and Focht3.
Jheidt2543, I was already in process of cut a 2'x5' whole in the garage floor. So, now I can tell you what I found. This part of the foundation was backfilled with a whole lot of sand. The sand was damp, but not saturated. The foundation wall looks much...
We have lived in our Minneapolis house for two years, and it was built in 1977. The house is situated somewhat downhill in an area where the soil has a high clay content.
We notice that a section of basement cinderblock wall is frequently damp, and is beginning to degrade. The previous owners...