In case the improvement is made on the bond installment plan, the finance director shall, at the expiration of 30 days after the first publication of the notice to pay assessment, report to the city council the amount collected by the city upon the roll and shall specify in the report the amount remaining unpaid upon the roll. The city council may then, or at a subsequent meeting, by ordinance, direct the mayor and finance director to issue the bonds on the local improvement district established by the ordinance ordering the improvement, in an amount equal to the amount remaining unpaid on the assessment. The ordinance shall specify the denomination of the bonds which, except for bond numbered “one,” shall be in multiples of $100.00 each. (Ord. 3404 § 3 (Att. A), 2021; Ord. 84 § 11, 1961)