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RVSD expands predictive analytics, generator testing and lateral‑loan program review

Ross Valley Sanitary District Board of Directors · January 22, 2026
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Summary

Operations staff reported new AI-based risk modeling and a revised cleaning cycle for vulnerable 4‑inch pipes, completed generator load testing at Pump Station 15, and staff summarized the NBS annual reports, including 98 active lateral-replacement loans totaling about $1.1 million owed.

Operations staff described work to strengthen reliability and to use data to prioritize maintenance.

The district’s AI/data-risk model integrates debris-loading data, pipe characteristics and historical spill records to score each pipe’s risk of failure. Staff said the model prompted a wholesale change to a two‑year cleaning cycle for older 4‑inch cast‑iron lines and identified a defective lateral on Via Lacombe that crews fixed before a blockage occurred.

Maintenance crews completed load testing and fuel-system polishing on major generators, notably Pump Station 15, which routinely handles a large share of district flow; staff said the extra attention improves reliability in wet-season power outages.

Finance/staff presented NBS annual reports: the Canyon Road Assessment District bond (2006 20‑year term) will retire in Sept. 2026; there are two delinquencies on the assessment. The lateral replacement and septic-to-sewer conversion loan program has 98 outstanding loans with about $1.1 million owed and annual installment receipts of roughly $130,133.

Directors asked clarifying questions about loan payoff on property sale and noted staff will continue outreach to affected parcels and finalize reporting details.