WOW I haven't put that much effort into a read since college!
This application was not for stopping leaks, but did test for permeability and groundwater transfer so IMO it holds some weight.
As a summary, ".gov" found that the AquaBlok was generally more stable than any other sediment cap. It was resistant to "shearing" forces and proved to be quite impennetrable over the 3 year study. Aquablock also resisted the transfer of river water through the sediment into groundwater better than the other test sites.
It doesn't sound like they got completely statistically significant results, but the Aquablock tended to be better in most categories.
That was my take on the paper, it was also a good way to see where $2,000,000 of our tax dollars went! "But you don't have to take MY word for it..."
