Ill. Admin. Code tit. 35, § 848.307
Copies of all records required to be kept under this Subpart shall be retained by the owner and operator for three years and shall be made available at the site during the normal business hours of the operator for inspection and photocopying by the Agency.
(Source: Former Section 848.305 renumbered to Section 848.307 at 39 Ill. Reg. 12934, effective September 8, 2015)