When in the judgment of the Director of the Department of Public Works of the City and County of San Francisco or his authorized representative, any portion of the roadway of any unpaved street, avenue, lane, alley, court or place, or any portion of any sidewalk thereof, in the said City and County, none of which has been accepted by the Supervisors as by law or as in the Charter of said City and County provided, shall contain rubbish or debris in such quantity so as to endanger persons or property passing thereon, or so as to interfere with the public convenience in the use thereof, or which consists, in whole or in part, of combustible material, the Director is authorized to notify the owner of any real property fronting on said portion of said unpaved street, avenue, lane, alley, court or place, or sidewalk so containing rubbish or debris as aforesaid, to remove such rubbish or debris.
(Added by Ord. 16-71, App. 1/26/71)