Assessment installment payments may be made payable at the office of the director of finance or at the office of the county treasurer, as provided in the assessment ordinance. If assessment installment payments are to be paid to the county treasurer, the director of finance shall certify and deliver the final assessment roll to the county treasurer with his warrant for the collection of the remaining assessments. If the assessment roll is so certified and delivered to the county treasurer for collection, the county treasurer shall receive payment of all assessments appearing upon the assessment roll, with interest. All collections made by the county treasurer upon the assessment roll in any calendar month shall be accounted for and paid over to the director of finance on or before the tenth day of the next succeeding calendar month with a separate statement for all such collections for each improvement district. In case of default in the payment of any installment of principal or interest when due or in the case of a default in the payment of general taxes due in connection with any property, the director of finance shall advertise and sell, or cause the county treasurer to advertise and sell, any and all property concerning which default is suffered, for the payment of the whole of the unpaid assessment thereon, with interest and penalties. The advertisement and sale shall be made at the same time, in the same manner and under the same conditions and with the same effects as are now prescribed by the general laws of the state for the sale of real estate in default of the payment of general taxes. (Ord. 9, Series 1988)