Whenever the director of building inspections has given written notice to the owner as set forth in Section 8.04.120 of this title, and at least sixty (60) calendar days have passed from the mailing of that notice, and the owner has failed to respond or when in the opinion of the director the negotiations with the owner to abate the nuisance are unsuccessful or not proceeding satisfactorily, he or she shall issue an order hereinafter referred to as "the hearing notice." The hearing notice shall direct the owner to appear before the board to show cause why the premises should not be declared a public nuisance and the same abated by the city. The hearing notice shall be served not less than ten (10) calendar days prior to the hearing date. (Prior code § 61.11.1107)