You need to go through a competitive bidding process to show you either have the lowest price or that your product or service is the best value. A request for proposal (RFP) is a business document that announces a project, describes it, and solicits bids from qualified contractors to complete it.Request For Proposal FAQs. For general information about upcoming bids, proposals, and procurement at DEP, visit Bids and Proposals. To be complete, a bidder's bid response must include ALL of the above documents. Please include the original and ONE copy of each form submitted. An RFP is a document that a business, non-profit, or government agency creates to outline the requirements for a specific project. An Invitation for Bid (IFB) is a solicitation from a company or organization for proposals to complete a specified project. Bidders must complete and submit a signed original of each and the applicable number of copies of each with their Bid. 15. This is where NYPA and NYS Canal Corp.