All trade contractors need to complete our Subcontractor Qualification Application to be eligible to bid on our projects and contract with Clark. Our award-winning portfolio includes work completed using a variety of delivery methods.Leveraging our extensive industry knowledge and innovative approaches. Our experienced technicians and engineers can help you design, bid, and build a customized cabling and technology solution that meets all your requirements. FOR CONSTRUCTION OF. Washington Aqueduct McMillan North Clearwell Replacement. The subcontractor's guide to working with Clark Construction, including their history, how to prequalify, payment tips, and more. In addition, in the first paragraph it states the following: "Proposals submitted without a signature below will be rejected".