The RFB may be used in procurements and public works projects where the estimated value is more than $25,000.00. The RFB process requires detailed specifications be solicited by the City for firm bids, i.e., “offers” in sealed envelopes which are opened and read at a public bid opening. The process is regulated and bids are due on or before the published date and time for receipt at the Purchasing counter within the Finance Department City Hall 2nd Floor. These are best and final offers, not subject to negotiation.