Wastewater System Flow Monitoring Services

The City of Modesto Utilities Department is soliciting professional consultant services for wastewater system flow monitoring to support its operations, Wastewater Master Plan, and General Plan Update. The project involves the installation of up to 50 flow monitors in manholes across the city's collection system to capture wet and dry weather flows. Data collection must occur continuously at minimum 5-minute intervals over a four-month period during the winter and spring of 2027, specifically targeting the peak window from December through April. The total project duration, including data analysis and the delivery of a final flow monitoring report, is expected to last approximately one year. Selection will be based on a qualifications-based process, with scoring heavily weighted toward the proposed scope of services (45%) and the project team's experience (35%). Key deliverables include site assessment forms, field calibration documents, and raw and refined flow data in graphical and tabular formats. The final report must be ADA-compliant and verified via CommonLook software. Consultants are required to maintain professional liability insurance of at least 2 million dollars and workers' compensation as required by California law. Proposals and separate cost files must be submitted through the OpenGov Procurement portal by September 8, 2026.