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WES seeks 5-year I&I IGA renewal after pilot shows progress; board advances renewal
Summary
Water Environment Services presented a multi-year inflow-and-infiltration (I&I) pilot, reported $5.3M WES investment and $10.93M from member cities to date, and the board voted 5-0 to direct staff to submit a five-year renewal of the IGA for final approval.
The Water Environment Services (WES) board heard a technical briefing on the regional inflow-and-infiltration (I&I) program and directed staff to submit a five-year renewal of the intergovernmental agreement (IGA) to a future business meeting.
Assistant Director Ron Waringa and capital program manager Jeff Stallard reviewed the program's objectives, the three typical levels of I&I mitigation (mainline-only, mains plus rights-of-way laterals, and laterals to private property), and the pilot approval process. Stallard cited an example in the Mount Talbert basin where removing an improperly abandoned lateral and repairing manholes likely prevented an estimated 500,000 gallons from entering the sanitary system during a design storm.
WES reported regionwide accomplishments from the pilot: about 20,200 lineal feet of mainline sewer rehabilitated, 648 lineal feet of laterals, 98 manholes repaired, and identification and remediation of dozens of cross-connected catch basins. WES's investment through fiscal year 24-25 was $5,300,000, and member communities contributed approximately $10,930,000. Director Helm moved to direct staff to submit a five-year IGA renewal to a business meeting; the directors voted 5-0 to advance the renewal.
