Except as otherwise provided, all groups, departments and enterprises of the City, except the street and traffic engineering units, shall procure permits before making any excavation in any street, avenue or alley of the City. When an excavation is begun or made due to an emergency by a unit or department, it shall be that unit's or department's duty, as soon as practicable after beginning excavation, to report the excavation to the City Engineer and obtain a permit covering the work done and to be done. The City Engineer shall have the authority, when deemed advisable, to designate a person or persons in the group, department or enterprise doing the excavating to act as inspector or inspectors over excavations made by the group, department or enterprise. Departments doing the excavation shall comply with all provisions of this part relating to excavations and the manner of taking care of and filling the same, unless otherwise provided in writing by the City Engineer. (1968 Code §10-118.3; Ord. 74-56; Ord. 85-214; Ord. 01-42)