Ill. Admin. Code tit. 44, § 2000.2046
a) Application
Contracts are to be made only with responsible vendors unless no responsible vendor is available to meet the State's needs. If there is doubt about responsibility, and if a bond or other security would adequately protect the State's interests, then that vendor may be awarded a contract upon receipt of the bond or other security.
b) Standards of Responsibility
1) Standards. Factors to be considered in determining whether the standard of responsibility has been met may include, but are not limited to, whether:
c) Ability to Meet Standards
The prospective vendor may demonstrate the availability of necessary financing, equipment, facilities, expertise, and personnel by submitting upon request:
d) Duty Concerning Responsibility
Before awarding a contract, the Procurement Officer must be satisfied that the prospective vendor is responsible. Responsibility can be proven until time of contract execution unless the solicitation or other law requires that the vendor submit information necessary to determine responsibility by a stated date or time.
e) Written Determination of Nonresponsibility Required
If a vendor who otherwise would have been awarded a contract is found nonresponsible, a written determination of nonresponsibility setting forth the basis of the finding shall be prepared by the Procurement Officer. The final determination shall be made part of the procurement file.
f) Bond for Responsibility
Vendors not having a history of performance may be considered responsible if no other disqualifying factors exist. A bond or other security may be required of such vendors.
g) Affiliated Companies
Vendors who are newly formed business concerns having substantially the same owners, officers, directors, or beneficiaries as a previously existing vendor that has been determined not responsible will also be determined not to be responsible unless the new organization can prove it was not set up for the purpose of avoiding an earlier determination of nonresponsibility.