In addition to the remedy by prosecution for violation of this chapter, any obstruction maintained in violation of this chapter shall be deemed a nuisance, and upon failure to abate the same within fourteen days after the posting upon the premises of notice to abate the nuisance, signed by the director of public works or his or her authorized representative may enter upon the premises and remove or eliminate the obstruction. In such event the cost to the city of the abatement of the nuisance shall be a personal obligation against the owner of the premises upon which the nuisance was maintained, recoverable by the city in an action before any court of competent jurisdiction. (Ord. 944 § 1 (part), 1983: prior code § 3216(c))