The Bidder shall complete and submit the form provided in the Bid Proposal. If the Bidder is a Local SBE, and, when applicable, wishes to have its Bid be.1. ALL Contractors and subcontractors for public works projects must register with DIR. Bid Opening Checklist. 2. The competitive bidding process usually involves public advertisement for the submission of sealed bids, the public opening of bids, and the award of.