Getting ready to build a 4 acre pond in north Louisiana. Soil test show patches of dispersive clay. Meeting with NRCS to help come up with a plan for building the pond. Soil engineer says there is a 50 / 50 chance of being successful without treating soil. We really want to do this project to allow us to use the property for more than just hunting. So far we have been told to treat soil with hydrated lime. This is our plan right now as it stands. I have heard of sodium bentonite but I am not sure this is the right product for this soil type. We will spend over 60k on this project and want to make sure the pond won't fail. Any input would be most helpful.