I need to drain my pool but neither the pool pumping guy not I can locate our sewer clean-out and we can't pump into the street (city rule). My next-door neighbor tried to help (he knows where his is) and we even called the previous owners of our house. We looked where the previous owner said he thought it was but it isn't there. Could it be under the dirt? More that 2" or so? Would a plumber be able to find it? It seems crazy that none of us can find the dang thing.