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TO: Mayor Thomas J. Weisner
FROM: David E. Schumacher, P.E.; Superintendent of Water Production
DATE: August 10, 2016
SUBJECT:
A Resolution Authorizing Well Maintenance Services for Well No. 29 for the Water Production Division.
PURPOSE:
To obtain City Council authorization for Layne Christensen Company (Layne), 721 W. Illinois Avenue, Aurora, IL, to perform all necessary services as described in this memorandum to return Well 29 to full operational and functional status.
BACKGROUND:
Well No. 29, located at 1374 Deerpath Road is a deep well with the pump and motor setting at 882 feet below the surface and is normally capable of supplying approximately 2,000,000 gallons of water per day. The well's pumping equipment experienced a failure on June 21, 2016. Preliminary testing by Water Production Division (WPD) staff and Layne indicated an apparent mechanical failure of the Flowserve-Byron Jackson 2400-volt, 400 horsepower, submersible well pump motor. In order to determine the exact cause of the motor failure the well pump/motor assembly must be removed from the well for inspection and further testing. Under a not-to-exceed purchase order of $25,000.00, Layne has completed the removal of the pumping equipment and suspects that a motor thrust bearing failed, rendering the equipment inoperable until repairs can be completed. The motor must be sent to the Flowserve service facility for a complete inspection. Based on currently available information, the motor itself will likely need to be replaced.
DISCUSSION:
The total estimated cost of all proposed and recently completed work by Layne to restore Well 29 to operational status is $197,705.00. The estimated cost items that have been identified are as follows:
Removal of all pump components and field inspection of motor: $25,000
Factory exchange motor: $128,800
Pump reinstallation and testing: $40,000
Miscellaneous items: $3,905
A detailed breakdown of the estimated costs has been provided by Layn...
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