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Legislative Public Meetings

File #: 25-1031    Version: 1 Name:
Type: Consent Calendar Status: Agenda Ready
File created: 9/15/2025 In control: City Council and Authorities Concurrent
On agenda: 12/16/2025 Final action:
Title: Action on Amendment No. 1 to the Agreement with HydroScience Engineers, Inc. for Hydraulic Modeling Calibration and Support Services for a Revised Maximum Compensation of $500,000
Attachments: 1. Amendment No. 1 - HydroScience Engineers, 2. Original Agreement
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REPORT TO COUNCIL

SUBJECT
Title
Action on Amendment No. 1 to the Agreement with HydroScience Engineers, Inc. for Hydraulic Modeling Calibration and Support Services for a Revised Maximum Compensation of $500,000

Report
BACKGROUND
Water and Sewer Utilities ("W&S") utilizes a hydraulic model of the City's water distribution system to evaluate system performance under various operational scenarios. The model provides essential pressure and flow information that supports day-to-day system operations and long-term planning for future capital improvement projects. The implementation of hydraulic modeling has also replaced W&S's previous practice of conducting field fire flow tests, in which staff physically operated fire hydrants to obtain pressure and flow data. By using the hydraulic model to simulate these flow tests, W&S significantly reduces water use, improving the City's water conservation efforts.

On November 14, 2024, the City Manager executed an agreement with HydroScience Engineers, Inc. (HydroScience) following a competitive Request for Proposals process. Consistent with City Code Section 2.105.300(a), which authorizes the City Manager to execute agreements up to $250,000, the agreement provided for an initial five-year term through November 14, 2029, with two one-year renewal options and a maximum compensation of $250,000.

Under the agreement, HydroScience is responsible for reviewing the City's existing InfoWater hydraulic model, updating it based on water infrastructure improvements, calibrating the model as necessary, and performing analyses using the model. The agreement also allows W&S to request as-needed hydraulic modeling analyses, such as fire flow analyses, development impact analyses, and annual model updates.

DISCUSSION
The original $250,000 maximum compensation was based on the effort needed to complete the base scope of work to update and calibrate the City's hydraulic model, totaling $192,500, and the remaining $57,500 allocated for...

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