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Consultant briefs Lake Barrington trustees on MS4 annual report and IEPA permit changes
Summary
A consultant presented the village’s annual MS4 stormwater report for March 2025–March 2026 and outlined IEPA permit changes — including property inspections starting March 2027, green infrastructure requirements, and new public-notice rules.
Christian, identified in the meeting as the water resources director from a consulting firm, presented the village’s year-23 MS4 (municipal separate storm sewer) public report covering March 2025 through March 2026 and explained obligations under the Clean Water Act and IEPA permits.
Christian described field inspections (outfalls, detention basins and stream banks), tablet-based inspection forms used by interns and inspectors, and the process for documenting and notifying the village of potential illicit discharges. He said the IEPA reissued the new permit July 8, 2025 (effective Aug. 1, 2025) and summarized four significant changes that will affect the village: property inspections of village-owned properties and certain facilities, new green-infrastructure considerations, more public notification (electronic filing and construction-site posting), and expanded online disclosure and plan updates.
Christian told trustees property inspections are scheduled to begin in March 2027 and explained that some outfalls are considered priority and may require more frequent checks. Trustees asked clarifying questions about mapped outfall locations and inspection frequency. The village confirmed it has posted the annual report online to meet permit disclosure requirements. No board action was required; the presentation satisfied the annual public-update requirement for the NPDES/MS4 permit.
