How do I submit a bid or proposal? All formal bids and proposals shall be submitted as specified in the solicitation document.Below are links to solicitations available through Maricopa County. Bid Bond: Submit a certified or cashier's check or a surety bond, payable to Northern. Apply to Data Entry Clerk, Customer Service Representative, Dispatcher and more! The bid or Request for Proposal will be designed to be competitively bid following all MCCCD Purchasing guidelines and allowing maximum competition. The Maricopa Association of Governments (MAG) is requesting proposals from qualified consultants for the.