How do I submit a bid or proposal? All formal bids and proposals shall be submitted as specified in the solicitation document.The Bid shall contain an acknowledgement of receipt of all Addenda (the numbers of which must be filled in the Bid Form). 10.8. Open Book to be used with general contractors bidding out multiple subcontractors. General. Proposals should be allinclusive, detailing respondent's best offer for all requirements in section 2.0 (Scope. Contract Duration 3 years. Contract Renewal 7 annual renewals. The City of Maricopa will accept competitive sealed proposals for the playground surface replacement at. The Maricopa Association of Governments (MAG) is requesting proposals from qualified consultants for the. Completed documents must be included with the response.