It was a technician error. He entered the wrong proctor value into the nuke and was only reading the percentages and not paying attention to the densities.
Ron- it is actually behind a concrete wall and below slab/footings. The rock is roughly 10 feet wide by 12 feet deep. The tests that fail are 92-94% of proctor. The majority of the fill tested above 95%. They were able to re-test some areas and get more passing tests.
A technician used a nuke on a material known as Ab3 or crushed limestone with fines. It's basically a collection of aggregates with a varying gradation and low plasticity. It's used in areas to improve stability of pavements or foundations.
The technician had failing tests of the 132 psf...
