Ill. Admin. Code tit. 35, § 615.421
This Subpart applies to existing land treatment units that are located wholly or partially within a setback zone or regulated recharge area and that treat or dispose of special waste or other waste generated on-site, except that this Subpart does not apply to any existing land treatment unit that:
(Source: Amended at 47 Ill. Reg. 7581, effective May 16, 2023)