Tunneling for a distance of not greater than six feet away may be permitted in yards, courts, or driveways of a building site. All excavations required for installation of a building sewer system, or any part thereof, within the walls of a building shall be open trench work. All trenches and tunnels shall be kept open until piping has been inspected, tested, and approved.
('79 Code, § 909) (Ord. 1983-O-6, passed 4-19-83) Penalty, see § 52.999