Ill. Admin. Code tit. 44 § 2000.7025
When the Code or this Part requires a written determination, the Procurement Officer required to prepare the determination may delegate its preparation, but the responsibility for and the execution of the determination shall not be delegated.
Each written determination shall set out sufficient facts, circumstances, and reasoning as will substantiate the specific determination that is made.
While an officer is responsible for the execution of the written determination, other State personnel, particularly technical personnel and appropriate personnel, are responsible for furnishing to the person requesting the audit under Section 2000.7020(b), in an accurate and adequate fashion, the information pertinent to the determination. When requested, such information shall be furnished in writing to the person requesting the audit under Section 2000.7020(b) who shall have the authority to decide the final form and content of the determination and to resolve any questions or conflicts arising with respect to the determination.
The SPO is authorized to prescribe methods and operational procedures to be used in preparing written determinations.
Each written determination shall be filed in the solicitation or contract file to which it applies, shall be retained as part of such file for so long as the file is required to be maintained, and, except as otherwise provided by statute or rule, shall be open to public inspection.
Ill. Admin. Code tit. 44, § 2000.7025