7-2-5: MIXING CONCRETE ON PAVED STREETS OR SIDEWALKS; PERMIT:
Unless a permit from the Superintendent of Streets has been obtained, it shall be unlawful to:
   A.   Place, Pile Or Permit: Place or pile or permit to be placed or piled, any sand, gravel, lime, cement, mortar, plaster, concrete or any like substance or mixture, or allow the same to remain on any portion of any paved street or sidewalk.
   B.   Make, Mix Or Permit: Make or mix or permit to be made or mixed any mortar, plaster, concrete or any like substance or mixture on any portion of any paved street or sidewalk. (1998 Code § 11-355)