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TO: Mayor Richard C. Irvin
FROM: David E. Schumacher, P.E., Superintendent of Water Production
DATE: January 10, 2022
SUBJECT:
Resolution to award a contract for the Normal Pressure System (NPS) Master Meter Replacement project in the amount of $367,800.00 for the Water Production Division.
PURPOSE:
To obtain City Council approval to award a contract to Performance Construction & Engineering, LLC of Plano, IL (PCE) for the Normal Pressure System (NPS) Master Meter Replacement project for the Water Production Division (WPD) in an amount of $367,800.00.
BACKGROUND:
All residents of the City of Aurora are provided with potable water from the city owned and operated Water Treatment Plant (WTP). The WTP was originally constructed in 1991/1992 and began operation in 1992. The water treated at the facility is then pumped to two distinct and separate pressure zones, the normal and high systems, which cover the entire City of Aurora. All the water that is pumped to the Normal Pressure System (NPS) flows through a single "master" flow meter which registers the amount of water pumped. This flow information is then used for multiple purposes such as reporting to regulatory authorities, monitoring quantities of water loss, and ensuring proper operation of the WTP's finished water pumps.
The NPS master meter has been in constant operation since 1992, and over the past several years it has shown decreased measurement accuracy and precision. Accordingly, the WPD has hired several experts from the flow meter manufacturing company to inspect the meter and perform various types of repairs. Unfortunately, the electrical windings in the NPS master flow meter are no longer salvageable and the flow meter is no longer functional. After 29 years of constant operation, the WPD believes that this meter is beyond its useful life and needs complete replacement.
DISCUSSION:
Due to the non-functional condition of the NPS master meter, the WPD hired Crawford, Murphy & Tilly...
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