Except as authorized by a permit issued by the Director of Recreation, Director of Public Works or their designees, it is unlawful to open or close any valves or switches pertaining to the water, gas or electric service or to move or remove from one location to another or destroy any equipment, tools, implements or materials used by City departments; provided, however, that this section shall not apply to any employee or contractor of the Recreation Department or Public Works Department while in the performance of his duties. (Ord. 3322 § 1, 2014; Ord. 2651 § 1, 1995; Ord. 1557 § 1, 1974; Ord. 1179 § 1 Art. 3; Ord. 857 § 2(J); prior code § 21.3.2(13)).