The hearing officer shall conduct a hearing and take the matter under submission for decision no later than thirty (30) city business days following the timely filing of an appeal, unless the applicant and appellant (if different than the applicant) consent in writing to an extension. At least ten (10) calendar days prior to such hearing, written notice thereof shall be mailed to the applicant and appellant (if different than the applicant) by U.S. mail with a proof of service attached. (Ord. 98-O-2302, eff. 7-2-1998; amd. Ord. 99-O-2319, eff. 2-5-1999; Ord. 99-O-2321, eff. 2-19-1999)