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TO: Mayor Thomas J. Weisner
FROM: David E. Schumacher, P.E.; Superintendent of Water Production
DATE: July 28, 2014
SUBJECT:
A Resolution Authorizing Well Maintenance Services for Well Nos. 17 and 103 for the Water Production Division
PURPOSE:
To obtain City Council authorization for Layne Christensen Company (Layne), 721 W. Illinois Ave, Aurora, IL, to perform all necessary field services, inspections, and testing to evaluate and rehabilitate the subject wells as applicable.
BACKGROUND:
Well No. 17, located at 811 N. Highland Avenue is a deep well with the pump and motor setting at 840 feet below the surface and is normally capable of supplying approximately 1,100,000 gallons of water per day. Well 17 has been recently inactive due to loss of pumping capacity attributed to possible holes in the column pipe and/or bowl assembly. The proposed Phase I work performed by Layne will involve the removal of the pump components which is required in order to verify the actual cause of the suspected problem(s). Additionally, routine inspections of all pump, motor, and piping components are provided with the initial Phase I work. Final repair recommendations and cost estimates will be considered after the initial removal and inspections are completed.
Well No. 103, located at 501 Orchard Road is a shallow well with the pump and motor setting at 76 feet below the surface and is normally capable of supplying approximately 700,000 gallons of water per day. Shallow wells located in typical sand & gravel formations may lose pumping capacity over time due to plugging of the well screen from silt or other solids found in shallow groundwater. When loss of pumping capacity becomes excessive, the well screen typically requires maintenance cleaning. Layne is proposing to clean the well screen using a combination of chemical treatment and the Sonar Jet treatment processes. Furthermore, as the pump components must be removed to facilitate cleaning, it is recommended that the pump components be evaluated and standard repairs/maintenance be completed as required.
DISCUSSION:
The total estimated cost of all projected service work provided by Layne is $91,650.00, of which $48,400.00 is estimated for Well No. 17 and $43,250 for Well No. 103. In addition, a contingency amount of $8,350.00 (9.1%) is also requested. A detailed breakdown of the estimated costs for each well has been provided by Layne and is attached in separate proposal letters.
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, such as Sonar Jet and chemical treatment for well redevelopment. Layne will perform the 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 2014 City Budget in Account No. 510-4058-511-38-31.
IMPACT STATEMENT:
None.
RECOMMENDATIONS:
That a resolution authorizing well maintenance services to Well Nos. 17 and 103 by Layne Christensen Company per the existing PSA in an amount not to exceed $100,000.00 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 Peters, Chairman
Alderman Garza
Alderman Bugg
Alderman Saville, Alternate
CITY OF AURORA, ILLINOIS
RESOLUTION NO. _________
DATE OF PASSAGE ________________
title
A Resolution Authorizing Well Maintenance Services for Well Nos. 17 and 103 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 Nos. 17 and 103 require field services, inspections, and testing to evaluate and rehabilitate each well as applicable; 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 2014 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 Nos. 17 and 103 by Layne Christensen Company, in a total amount not to exceed $100,000.00.
PASSED AND APPROVED on ______________.
AYES ____ NAYS ____ NOT VOTING ____ ABSENT ____
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Alderman Bohman, Ward 1 Alderman Garza, Ward 2
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Alderman Mesiacos, Ward 3 Alderman Donnell, Ward 4
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Alderman Peters, Ward 5 Alderman Saville, Ward 6
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Alderman Hart-Burns, Ward 7 Alderman Mervine, Ward 8
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Alderman Bugg, Ward 9 Alderman Johnson, Ward 10
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Alderman Irvin, At Large Alderman O'Connor, At Large
ATTEST:
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City Clerk Mayor