The term of the bond shall begin on the date of the deposit of cash or the filing of the surety bond, and shall end upon the date of the completion to the satisfaction of the director of public works of all improvements required to be made. The fact of such completion shall be endorsed by a statement thereof signed by the director of public works, and the deposit shall be returned to the owner, or the surety bond may be exonerated at any time thereafter. (Ord. 2017-0009 § 11)