When required by the City Manager, the owner of any property served by a building sewer carrying industrial waste shall install a suitable control manhole in the building sewer to facilitate observation, sampling and measurement of the wastes. Such manhole, when required, shall be accessible and safely located and shall be constructed in accordance with plans approved by the City Engineer. The manhole shall be installed by the owner at his or her expense and shall be maintained by him or her so as to be safe and accessible at all times.  (Ord. 3668.  Passed 6-18-85.)