89 Ill. Adm. Code 331.80
Records Retention
Section 331
Section 331.80 Records
Retention
a) The Department shall retain any report of an unusual incident
received pursuant to this Part for at least five years from the date of receipt
of the report. Records may be retained as hard copy documents, microfilm,
magnetic tapes, computer files or other methods that permit retrieval and
reproduction.
b) If any litigation, claim, financial management review,
licensing review or audit is begun before the expiration of the five-year
period, the records shall be retained until at least three years after all
litigation, claims or audit findings involving the report have been resolved
and final action taken.