30 ILCS 535/35
On the basis of evaluations, discussions, and any presentations, the State agency shall select no less than 3 firms it determines to be qualified to provide services for the project and rank them in order of qualifications to provide services regarding the specific project. The State agency shall then contact the firm ranked most preferred to negotiate a contract at a fair and reasonable compensation. If fewer than 3 firms submit letters of interest and the State agency determines that one or both of those firms are so qualified, the State agency may proceed to negotiate a contract under Section 40. The decision of the State agency shall be final and binding.
As part of the State agency's commitment to fostering greater diversity in contracting, the State agency may communicate with firms who were not selected in order to provide further information about the firm's proposal deficiencies.
30 ILCS 535/35