All excavations required to be made for the installation of a sewer or drainage system, or part thereof, within or without a building shall be kept open until the piping has been tested, inspected and approved. If any sewer or drainage system or part thereof is covered or concealed before being regularly inspected, tested and approved, as herein prescribed, it shall be exposed upon the direction of the General Manager.
(1995 Code, § 7.20.260) (Ord. 17-03, passed 3-21-2017; Ord. 15-02, passed 5-5-2015)