Ill. Admin. Code tit. 44, § 2000.2036
a) Split Award
b) Multiple Award
c) Term and Condition Contracts
d) Auction
Purchases may be made at auction in accordance with the procedural requirements applicable to the particular auction. Notice and competition is not required and the amount payable shall be the amount bid and accepted plus any required buyer's premium.
e) Non-governmental Joint Purchase
f) Federal Requirements
The Procurement Officer may conduct procurements in accordance with federal requirements that are necessary to receive or maintain those federal aid funds, grants or loans or to remain in compliance with federal requirements.
g) Donations
When a procurement will have the majority of funding from a donation, the terms of which donation require use of particular procurement or contracting procedures, the Procurement Officer may follow those procedures, but shall follow the Code and this Part whenever practicable.