US lawIllinoisRegulationsTitle 35 — ENVIRONMENTAL PROTECTIONCHAPTER I: POLLUTION CONTROL BOARDPart 615 — EXISTING ACTIVITIES IN A SETBACK ZONE OR REGULATED RECHARGE AREASubpart L615.72235 Ill. Adm. Code 615.722Groundwater MonitoringLast amended: 2023Year: 2026Length: 18 wordsOfficial source Section 615 Section 615.722 Groundwater Monitoring The owner or operator must comply with the requirements of Subpart B.Previous35 Ill. Adm. Code 615.721Next35 Ill. Adm. Code 615.723