Upon satisfactory completion of all the terms and conditions of an encroachment permit, the director shall issue a certificate to this effect to the director of finance. Upon receipt of such certificate and after the expiration of the time period established by the permit, the director of finance shall be authorized and directed to return the cash deposit or bond or other security posted by the permittee to the permittee in accordance with Section 12.04.050. Unless required by prior agreement or law, the amount returned will not include any interest. (Ord. 1131 § 4 (part), 1989: prior code § 7310.12)