All bills and demands against the City shall be presented in writing to the City Manager not less than five business days preceding the Council meeting at which payment is to be approved, except where the Council fords that an emergency exists. All such bills and demands shall be itemized and substantiated by receipts, purchase orders, or other evidence of the expenditures made, services performed, materials or property furnished, or other basis for the bill or demand.
(Ord. 251, § 1)