The owner or operator must maintain aisle space to allow the unobstructed movement of personnel, fire protection equipment, spill control equipment, and decontamination equipment to any area of facility operation in an emergency, unless aisle space is not needed for any of these purposes.
Ill. Admin. Code tit. 35, § 725.135
Amended at 29 Ill. Reg. 6389, effective April 22, 2005