A couple of considerations.
First, a road crew may not have GOOD pond building experience. There is a lot of difference in construction dozer work and building a home for fish.
Second, their objective, it sounds like, is to get free dirt to build a road. If the hole they make in the ground doesn't hold water they will be down the road and you will have a mess.
Ask them where they intend to get the clay for the core. If they don't understand the importance of that, I would back away from the idea.
Last edited by Dave Davidson1; 10/28/10 04:51 AM.