Posted 4/7/2021 14:48 (#8938244 - in reply to #8936871) Subject: RE: Surface drainage in mn?
Hefty brothers did a tile seminar a month or two ago. They put it back on line viewable if you subscribe to their magazine, unfortunately only viewable through tomorrow. I happen to be watching it right now, they have a lawyer from Minnesota discussing these issues talking about questions like yours. It sure seems to be a minefield of fed, state, and county rules that overlap. Wish you would get a chance to see that. If you happen to have an in with the Hefty brothers, get on line by tomorrow and check it out.