TO: Members of the Governing Board
FROM: Christopher Silke, District Engineer
REPORT BY: Annamaria Martinez, Assistant Engineer
SUBJECT: Award Professional Services Agreement 250410B with Telstar Instruments for completion of the Water and Wastewater Facility SCADA Replacement Project, NB 24-01
RECOMMENDATION
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Approve and authorize Agreement No. 250410B (NBRID) with Telstar Instruments for the Water and Wastewater Facility Supervisory Control and Data Acquisition Replacement Project, NB 24-01; and approve a Budget Amendment. (Fiscal Impact: $250,000 Expense; Napa Berryessa Resort Improvement District Fund; Not Budgeted; Discretionary)
[4/5 vote required]
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BACKGROUND
On January 23, 2025, District staff issued a Request for Proposals for the replacement of the District's water and wastewater facility SCADA system. A SCADA system is a computerized system primarily used to monitor and control system process and assets from a centralized location. System assets for the District include the water treatment plant and onsite tanks and pump station, potable water tank, sewer treatment plant, sewer lift stations, and sewer ponds and sprayfields. The existing system is now 10 years old and provides limited automation and control of the system assets.
The current system can shutdown certain plant processes in the event a pre-set alarm is triggered during monitoring, but the system is not able to send the alarm notifications to District staff or operators when offsite, and remote access to the SCADA workstations is inefficient, with extended lag experienced after each mouse click. In general, the existing older generation SCADA system currently in use does not provide the advanced level of automation, remote control, alarm alerts, sufficient network speed, trend analysis, and dependability needed by the District in a more stringent regulatory environment.
Additionally, data collected by the system is required to populate regulatory reports, and while Distri...
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