How to Receive Bids. Get on the State of Texas Centralized Master Bidders List (CMBL).For bid opportunities, visit the Texas Comptroller of Public Accounts website. Item 2, "Instructions to Bidders," details the process for requesting and preparing the bid documents. You only need to complete one questionnaire. A request for proposal (RFP) is a business document that announces a project, describes it, and solicits bids from qualified contractors to complete it. Sealed Request for Proposals (RFP) will be received at the County Purchasing Department, 800. E. Overland, RM 300, El Paso, Texas 79901 before p.m. Parties in the invitation to bid or request for proposals process. Update the MSR with the Procurement Results.