All vendors on projects pursuant to this Part, including identified subcontractors in projects utilizing the single prime design-bid-build procurement method, shall be prequalified in accordance with 44 Ill. Adm. Code 950, 980, 990 and 995 unless the CPO determines, in writing, that a vendor without prequalification should be awarded a contract if it is in the best interests of the State.
Ill. Admin. Code tit. 44, § 930.330