I suspect that the successful bidder might end up charging the prime contractor a fee plus whatever the scrap is worth. I really think your contact is pulling your wazoo that it can be done for just the scrap value.

Patriot has the right idea...Is there a parking lot for this building at ground level where a chute from the floors be set up? gravity will help, and you'll need the ground level area to load scrap bins out.

If you need to work with the elevator, you'll need to deal with processing the scrap on the upper floors and rigging some way to load the elevator with exactly weight limit each and every time. Does it open out to an underground parking lot or something? Got the head room down there to bring in a roll-off?

From your photos, it looks like the area has already been high-graded...or someone started the scrapping job and backed out.....?

Maybe Patriot is just about ready to move onto the next job!! Houston bound?

Jon.