Well, our NRCS agent got back to me and gave me the name of the guy who retired. He thinks he may be consulting, but no phone number. He couldn't even come up with a pond builder other than the retired guy. Not really full of information.

Absolutly no help with any clay information. "Don't know of any sources, or where to get some". He didn't even know if NH had any clay.(?) I told him, the geo survey maps show blue clay in two areas of the state.

He suggested Benetonite, I said I'd been that route. I told him I think I need something that will compact soild over a ledge. No suggestions from our NRCS agent.

I put out a cry for help on Craigslist, and had one relpy. I'm trying to contact that person. They suggested I back fill with crushed stone than pack with clay. Does that make any sence? I would think the stone would open up even more areas to a possible leak location.