As some on this forum may remember, we have had a huge leaking lake for the past two years. The 1st attempt at repair used a low PI clay plowed into the soil and packed. While this appeared to work at 1st, the leak was still there when the lake got near full. After another year, including 6 months of engineering study, the "fix" was the use of ESS-13 combined with truck loads of fly ash to condition the soil and add needed binders. The procedure consisted of removing the top 6-8" of sandy top soil, plowing the subsoil while adding in the fly ash, compacting this mixture, surface spraying the ESS-13, then covering with the original top soil. This was then followed by additionally compacting the top soil. After 60 days since repair, we are gaining 1" per day in depth on a 25 acre surface coverage. At the well pumping rate, this calculates to exactly the expected rise rate which would indicate the leak has been stopped. While it is still too early to claim success, I am hopefully optimistic.
I have taken lots of pictures, created a spreadsheet that tracked water loss and now water gain, evaporation estimates, rainfall and run-off, etc. If this ends up working, I will have a good testamonial for ESS-13 and quite a story to tell.