Find information about contracting with Hennepin County, including processes, forms, and diversity rules for goods and biddable services. The applicant must submit a financial bid in a separate envelope from the proposal document.Each invitiation to bid is posted on our website and can be found under the section titled "Current Solicitations". All requirements and information, as well as proposal delivery instructions are contained in the RFP. Contractors wanting to bid on items included in a particular letting must submit the properly completed "Request for. This Request for Proposals ("RFP") is an invitation for Proposers to submit a proposal to the County.