How do I submit a bid or proposal? All formal bids and proposals shall be submitted as specified in the solicitation document.The following is a list of all formal solicitations available for open competition. • Importance of the Special Business Certifications. These links will connect you with the latest transportation-related bid and procurement opportunities from ADOT and a variety of state and local agencies. Offeror must complete, sign and submit an original of this form to the Procurement Office with the proposal response. The City of Prescott is currently accepting submittals for the solicitations listed below.