Here I am pouring the “slurry” into the previously dug hole. The slurry is made from the same soil which was dug out of the probe holes. I just sifted it out to make it extremely fine and mixed it with water to the appropriate consistency. This completely removes any air spaces between the sidewalls and the probe and gives it a concrete-like bond.
Now I'm working the soil probe through the slurry to the bottom of the hole to remove air pockets.
