A construction proposal is a document used to provide a client with a clear understanding of a project's details. TxDOT must qualify bidders to become eligible to bid or to receive a bid proposal on a construction or maintenance project.• Make your RFP easier to read and qualify by. Notice of Invitation for Proposal: The State Auditor's Office (SAO) invites proposals for auditing. Contractor shall provide the City with an Internal Revenue Form W9, Request for Taxpayer. Chapter 1: Administration and General Requirements1. Each bidder is required to acknowledge receipt of an addendum issued for a specific project.