All material excavated from trenches and piled adjacent to the trench or in any street shall be piled and maintained in a manner so as not to endanger those working in the trench, pedestrians, or users of the streets, and so that as little inconvenience as possible is caused to those using the streets and adjoining properties. Where the confines of the area being excavated are too narrow to permit the piling of excavated material beside the trench, such as might be the case in a narrow alley, the Director shall have the authority to require that the permittee haul the excavated material to a temporary storage site approved by the Director and then re-hauled to the trench site at the time of backfilling. It shall be the permittee's responsibility to secure the necessary permission and make the necessary arrangements for all acquired storage and disposal sites. All material excavated shall be laid compactly and kept trimmed so as not to impede vehicular and pedestrian traffic. Whenever necessary, in order to expedite the flow of traffic or to abate dust or dirt, toe boards or bins may be required by the Director to prevent the spreading of dirt onto traffic lanes. (Ord. 2019-09, 5-9-2019)