Sealed bids shall be opened in public at the time and place stated in the notice inviting bids. A tabulation of all bids received shall be made available for public inspection until the award of a contract. All bids shall be retained on file for a period of not less than two years. (Ord. 1435 § 1 (part), 2003: Ord. 954 § 2 (part), 1983: prior code § 2952.4)