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TO: Mayor Richard C. Irvin
FROM: David E. Schumacher, P.E.; Superintendent of Water Production
DATE: July 15, 2021
SUBJECT:
A Resolution Authorizing the purchase of a 400 horsepower deep well motor from Layne Christensen Company in an amount not to exceed $159,600.00.
PURPOSE:
To obtain City Council authorization for the Water Production Division (WPD) to purchase a 400 horsepower deep well motor from Layne Christensen Company (Layne), 721 W. Illinois Avenue, Aurora, IL in an amount not to exceed $159,600.00.
BACKGROUND:
The City of Aurora Water Production Division utilizes both surface water and groundwater as sources for the City's drinking water supply. Groundwater is regularly obtained from six shallow aquifer wells and twelve deep aquifer wells. Of these twelve deep aquifer wells, ten utilize either a 350 or 400 horsepower (hp) well pump motor. The proposed 400 hp, 2300V, 17", Type M Submersible motor will serve as a critical spare to allow for the timely return to service of a well if an existing 350 or 400 hp motor suffers a failure. Historically, the WPD has operated without such a spare, which then requires the damaged motor to be shipped out-of-state for repairs, normally requiring a 12-week turnaround time. Recently, the WPD was without three deep wells due to unexpected motor failures. Any number of unpredictable circumstances can negatively impact the quantity or quality of source water, such as deep wells being unavailable as described, or water quality conditions that impair the Fox River, which in turn requires the use of more raw well water via wells. As such, the WPD believes it is prudent to purchase a spare 400 hp motor for deployment in any of the ten applicable deep wells. This capability is most critical during the high water demand summer season.
DISCUSSION:
Layne has proposed that the spare motor be stored at their Aurora facility (721 W. Illinois Ave.) for a couple of very important reasons. First, Layne has the appro...
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