Ill. Admin. Code tit. 35, § 380.1015
The contract operator must maintain records to document that all contract provisions are being met and continue to maintain the records for 5 years following generation of the data. The contract operator's records must be made available to the Agency upon request for inspection and photocopying during normal business hours.
(Source: Amended at 43 Ill. Reg. 5203, effective July 1, 2019)