It cannot be fixed. There are cement footings, cement floor plus cement blocks that are core filled with more cement. There is no way to add more dirt on top because rain runoff will flood the sidewalk and then the garage.
It was obvious he did no research because he would have read the minimum requirement is 3' dirt. When asked if he did research he looked away and said "yes".
We hired a contractor to build a tornado/wine cellar. Specifications were at least 3' of dirt over top and all sides. Top of the shelter has 6 inches of dirt at the front and 16 inches in the middle. Structure is 10 x 10. There was also supposed to be a vent for air exchange. No vent was...