Iburgos79, michaeldouglasswell's estimate looks about right. 10,000 CF is 370 CY. For a clean sand material, assume about 15% swell or 425CY (about 27 tri-axle dump trucks) or for a lumpy, clay material, assume about 25% swell or 462 CY (29 tri-axle loads).
If the contract documents clearly required the contractor to perform all moisture conditioning,i.e., drying, to acheive the proper compaction, the contract schedule has not been changed by the owner to put the work schedule into a different season, and sufficient geotechnical data was included...
I don't think you can beat Caterpillar's Performance Handbook. I got mine from the local dealer. Pardon the pun, but when it comes to moving dirt, Caterpillar wrote the book!
Whoaaa....what a mess.
Whenever I become a part of problems like this, I consider several things before I jump to a solution/resolution, and I have not seen all of these discussed yet. As I am sure you know, there are MANY ways to solve a problem...
1. Who "dropped the ball" on this, i.e...