No utility service provider, cable operator, or person shall obstruct or place obstructing materials in the rights-of-way without prior consent of the City, which consent shall be set forth in a permit issued by the Director of Engineering Services under Section 905.16 of the Codified Ordinances of the City; provided however, utility service providers and cable operators may place temporarily trucks, cones, pumps, ventilating equipment, trailers, guards, and other facilities in the rights-of-way in order to enter existing manholes and other underground structures to perform routine repair and maintenance of their facilities which repairs and maintenance do not require cutting, breaking, opening, boring under, or altering street pavement, or digging, excavating, or performing any other work or activity which disturbs or alters the existing surface, subsurface, structure, composition, or soil compaction of the rights-of-way. In no event shall the rights-of-way be obstructed for more than twelve (12) hours in any twenty-four (24) hour period without prior consent of the City set forth in a permit issued by the Director of Engineering Services under Section 905.16 and in no event shall traffic be obstructed on more than one half of any public street at any one time. (Ord. 00-261. Passed 9-25-00.)