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Veolia reports regulatory compliance and managed near‑storm flow; WPCA hears project updates
Summary
Veolia told the Norwalk WPCA the treatment plant met nitrogen performance targets for the year, operators managed a near‑storm flow event on New Year's Eve, maintenance replaced an anoxic mixer and repaired a primary clarifier, and staff briefed members on multiple collection and capital projects and a Kilo Book pump station insurance/FEMA claim.
Veolia operations staff reported to the Norwalk Water Pollution Control Authority that the treatment plant met its nitrogen performance target for calendar year 2024 and that plant and collection crews successfully managed a near‑storm flow event on New Year’s Eve without exceeding storm flow limits.
Operations representative Trevor Steebrak reported the plant’s average nitrogen load for the year was 685 pounds per day, under the target of 718 pounds per day. He described maintenance work that included replacing an anoxic mixer in one aeration tank and repairing a primary clarifier. Steebrak said Veolia submitted required regulatory reports for December, including the DMR, MOR and NAR, and completed quarterly and annual sludge reports for Synagro.
Collections and maintenance metrics reported for December included 1.69 miles of CCTV inspection, 0.48 miles of cleaning, 72 manual inspections, 0.92 miles of SLRAT (surchlorination/line assessment), two miles of “hot‑list” cleaning, 16 service calls responded to, and 33 illicit plumbing program inspections. Steebrak said cold weather limited cleaning productivity at times.
Steebrak also described a brief rainstorm on New Year’s Eve that raised flows to a little over 30,000,000 gallons per day; operators monitored the plant and avoided a storm‑flow exceedance. “The team's really done a good job using all the instrumentation on the aeration basins,” Steebrak said, praising operator and maintenance responses.
Project updates and other staff reports: WPCA staff provided status notes on engineering and construction projects. A medium‑transmittal sewer project is moving from 30% to 60% design; the Catch Basin and Disconnect program is on hold pending the collector system master plan; Hubbell Saint Malise sewer work is advancing from 90% design toward final design and test fits to confirm utilities. For construction, crews are preparing to start on the Middle Island sanitary sewer rehabilitation project, including lateral work.
SCADA enhancements continue at pump stations and the treatment plant. Staff reported they are working with the insurance company and FEMA on claims related to the Kilo Book Pump Station. Separately, staff noted sewer‑use appeals totaling $82,724.
No formal actions were taken on the operations or project updates; the reports were received by the WPCA.
