US lawIllinoisRegulationsTitle 35 — ENVIRONMENTAL PROTECTIONCHAPTER I: POLLUTION CONTROL BOARDPart 616 — NEW ACTIVITIES IN A SETBACK ZONE OR REGULATED RECHARGE AREASubpart J616.62335 Ill. Adm. Code 616.623Groundwater MonitoringLast amended: 2023Year: 2026Length: 18 wordsOfficial source Section 616 Section 616.623 Groundwater Monitoring The owner or operator must comply with the requirements of Subpart B.Previous35 Ill. Adm. Code 616.622Next35 Ill. Adm. Code 616.624