Another option that I've seen used in in soft soil is a "soil correction" where the excavator will remove 2-6 ft of material below the pipe and place gravel to prevent settlement issues. It is a cheap and easy way to gain piece of mind about the foundation. It is much less complicated and...
How many loads of dirt from the same site are you looking to haul out? What is the soil type? Granular? Peat? It can vary.
We typically call in a nuke test for soil density when we have over 1000 C.Y. to haul if we don't have any other records from the area. The test is cheap and gives us a...