Each person with facilities in the public rights-of-way shall maintain accurate maps and improvement plans which show the location, size, and a general description of all facilities installed in the public rights-of-way and any power supply sources (including voltages and connections). Maps and improvement plans shall be based upon post-construction inspection to verify location. Each such person shall provide a map to the director of public works showing the location of its facilities, in such detail and scale as may be directed by the director of public works and shall update the map at least annually, and whenever the facility expands or is relocated. Copies of maps and improvement plans shall be provided in three mil Mylar format and on disk, in a commercially available electronic format specified by the director of public works. (Ord. 569 § 5 (part), 2007)