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TO: Mayor Thomas J. Weisner
FROM: David E. Schumacher, P.E.; Superintendent of Water Production
DATE: July 7, 2015
SUBJECT:
A Resolution Authorizing Well Maintenance Services for Well No. 23 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 23 to full operational and functional status.
BACKGROUND:
Well No. 23, located at 3290 Jericho Road is a deep well with the pump and motor setting at 913 feet below the surface and is normally capable of supplying approximately 1,440,000 gallons of water per day. The well's pumping equipment experienced a failure on April 4, 2015. Preliminary testing by both Water Production Division (WPD) staff and Layne indicated an apparent electrical problem with the Flowserve-Byron Jackson 2400-volt, 350 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 confirmed that an electrical grounding occurred within the motor making it inoperable.
The normal time for a complete electrical repair of this type of motor can be up to twelve weeks. The WPD has a spare submersible motor of similar size available for use and has determined that installing this spare motor is the best option at this time in order to return Well 23 to active service in a timely manner. A determination will be made in the future regarding repair or replacement of the damaged motor.
DISCUSSION:
The total estimated cost of all proposed and recently completed work by Layne to restore Well 23 to operational status is $123,053.00. The major estimated cost items that have been identified are as follows:
Removal of all pump components and electrical inspection of motor: $25,000
Rebuild pump bowl assembly (typical service when pump is removed): $12,500
Column pipe cleaning, repairs, and associated labor: $16,500
Furnish 930 feet of new submersible cable: $16,833
Furnish new flat cable: $6,320
Furnish new aquifer level sensor transducer and conduit installation: $7,100
Contingency for 24 hours of sand bailing: $10,000
Reinstallation of all pump components into well and testing: $27,000
A detailed breakdown of the estimated costs has been provided by Layne and is attached in a separate proposal letter.
The city entered into a Professional Services Agreement (PSA) with Layne in 2012 under Resolution No. R12-290, which provides a 5% discount on all labor and field services, and a 10% discount on specialized services performed by Layne. Layne will perform all work on a time and material basis and will only be compensated for the actual work performed per the terms and conditions of the PSA. In addition, Layne is the sole regional factory authorized source for repair services of Flowserve-Byron Jackson pumps and motors utilized by the Water Production Division.
Funds are available in the 2015 City Budget in Account No. 510-4058-511-38-31.
IMPACT STATEMENT:
None.
RECOMMENDATIONS:
That a resolution authorizing well maintenance services for Well No. 23 by Layne Christensen Company per the existing PSA in an amount not to exceed $125,000.00 be approved by the Mayor and City Council. It is further recommended that this matter be submitted to the Buildings, Grounds, and Infrastructure Committee for review and recommendation.
cc: Alderman Garza, Chairman
Alderman Johnson
Alderman Mesiacos
Alderman Bohman, Alternate
CITY OF AURORA, ILLINOIS
RESOLUTION NO. _________
DATE OF PASSAGE ________________
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A Resolution Authorizing Well Maintenance Services for Well No. 23 for the Water Production Division.
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WHEREAS, the City of Aurora has a population of more than 25,000 persons and is, therefore, a home rule unit under subsection (a) of Section 6 of Article VII of the Illinois Constitution of 1970; and
WHEREAS, subject to said Section, a home rule unit may exercise any power and perform any function pertaining to its government and affairs for the protection of the public health, safety, morals, and welfare; and
WHEREAS, Well No. 23 requires equipment replacement and repairs in order to return the well to normal operational status; and
WHEREAS, Layne Christensen Company, Aurora, IL, is the sole local authorized representative for service and repairs to Flowserve-Byron Jackson well pump equipment utilized by the Water Production Division; and
WHEREAS, a current Professional Services Agreement is in effect between the City of Aurora and Layne Christensen Company for professional services to include but not limited to water well maintenance, well equipment repair, and field services as per City of Aurora Resolution No. R12-290; and
WHEREAS, budgetary authority is granted and funds are available for this work in the 2015 City Budget in Account No. 510-4058-511-38-31;
NOW, THEREFORE, BE IT RESOLVED by the City Council of the City of Aurora, Illinois, as follows: that its Purchasing Director be and is hereby authorized to issue purchase orders for well maintenance services for Well No. 23 by Layne Christensen Company, in a total amount not to exceed $125,000.00.