It turns out that the sewer connections in Asheville have a dirty little secret. The pipes connecting to the house are metal. The pipes between those metal pipes and the sewer are made of some sort of laminated tar paper. It is really a miracle they lasted 60 years or so. But now the time has come to pay the big bucks and dig the big holes and replace the pipes so that water will continue to leave the house and not pool in the basement.