Title
Discuss and consider action to approve a professional services supplemental agreement with Ardurra Group, Inc. in the amount of $5,203,529.00 for professional engineering services associated with the Water Treatment Plant Facility Expansion Project and authorizing the City Manager to execute the same.
Summary
The City of Pflugerville (City) operates a nominal 17 million gallon per day (MGD) Water Treatment Plant (WTP). This project is to provide a comprehensive expansion of the WTP to 30 MGD, incorporating other active CIP projects currently underway, to meet current and future water demands. This project will also construct improvements required by the WTP facility to meet and maintain regulatory compliance, safety, technology improvements, process innovation and renew aging infrastructure. The expanded WTP facilities are scheduled to be placed into operation by April 2023 to meet projected water demands.
Development of a Preliminary Engineering Design & Report was completed under the original authorization. The following scope of work clarifies and describes the project tasks to be performed and completed by the Engineer to include final design and bidding phase services.
During the development of the preliminary engineering design & report, the following components were defined for the plant expansion. The final design will be based on the scope describe below:
A. Expansion of existing Lake Raw Water Pump Station will include: Two new vertical turbine pumps; A copper ion generator system for zebra mussel control; Expanding the existing Lake Raw Water Pump Station Pre-Engineered Metal Building (PEMB); Associated architectural, structural, building mechanical, electrical, instrumentation and control and SCADA integration improvements.
B. The Pretreatment System (i.e. Rapid Mix, Flocculation Basins, Plate Settlers) will include: Aluminum chlorohydrate (ACH) coagulation with static mixers, three-stage flocculation basins, and sedimentation basins ...
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