Unless otherwise authorized by law, all State procurement contracts shall be awarded by one of the following methods, at the procurement officer’s discretion, where applicable: Competitive sealed bidding under COMAR 21.05.02; Competitive sealed proposals under COMAR 21.05.03 ; Negotiated award after unsatisfactory competitive sealed bidding; Noncompetitive negotiations: Sole source under COMAR 21.05.05; Emergency and expedited under COMAR 21.05.06; Small procurement procedures under COMAR 21.05.07; Noncompetitive negotiated procurement under COMAR 21.05.12.04; Intergovernmental cooperative purchasing under COMAR 21.05.09; Architectural, engineering, and land surveying services qualification based selection under COMAR 21.12; Master contracting under COMAR 21.05.13; Auction bids under COMAR 21.05.14; or Pay-for-success contracting under COMAR 21.05.15.