The standard purchasing process for Allegheny County involves: requisitioning; public solicitation; bid and proposal receipt; evaluation and contract award. These contracts may be subject to a financial assistance contract between Port Authority of Allegheny County d.b.a.PRT and the United States. BID PROPOSAL: Please see the form located in section 004123. The Project consists of Multiple Prime Construction contracts. All prospective bidders are required to execute the Bid Schedule, Bid Bond, Proposal, Non.