It shall also be the duty of every person making any excavation or fill in any public street to erect and maintain barriers, warning flags and signs at each end and at intermediate points of such excavation and fill and at such places as may be necessary as adjudged by the Director of Public Works along the excavation, fill, walkways, material stockpiles and vehicle or pedestrian ways to prevent accident, and also to place and maintain lights at each end of such excavations or fill and at distances of not more than 50 feet along the line thereof from sunset each day to sunrise of the next day, until such excavation or fill is entirely completed and temporary surfacing installed. In case of neglect or refusal of permittee to do so, the Director of Public Works shall have such necessary barriers and lights placed along the line of the excavation and fills. In such event the expense of such precautionary action shall be charged to, and collected from, permittee at the minimum rate of $25 for each lantern and for each barricade, flag or sign so erected by the city or used by the permittee.
('86 Code, § 13.20.120) (Ord. 3002, passed - - ) Penalty, see § 1.12.010