In addition to the fees established pursuant to the authority granted in subsection (a) of this section, the applicant shall be responsible for all costs actually incurred in publishing any and all notices required by the provisions of this code and shall, upon filing the application, deposit with the office of the clerk-controller such sum as may be estimated to constitute the actual cost of publication deemed required by the administrator. In the event the actual costs of publication are less than the amount deposited, the excess shall be returned to the applicant within thirty days of the day of the termination of the proceedings. In the event the actual costs of publication exceed the amount deposited, then in that event, the applicant shall, upon presentation of a statement for said excess costs, immediately reimburse the city for the moneys in question. Payment of such sum may be a condition placed upon the issuance or implementation of any approval granted.