Just to get an idea how much soil was deposited on Tina bar, I have a picture of one cubic yard of dirt. hopefully this will help in trying to imagine 91,100 piles of material.
1 cubic yard
Covers 1296 square feet 1/4 ” deep
Covers 648 square feet 1/2 ” deep
Covers 324 square feet 1” deep
Covers 162 square feet 2” deep
Covers 108 square feet 3” deep