I'm also an electrician, and my cousin whose a lineman or foreman or whatever in louisiana gave me this Foam...chemical stuff to use when setting poles.
I set a 16 ft meter pole for the railroad today in muddy swamp water using this new foam mixture. I dug the hole 5 feet deep. Used 1 quart of foam..it set the pole in place with standing water in about 60 seconds.
It was a good day.
I might have used too much though...
Okies don't know any better. *at least I don't*