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TO: Mayor Robert J. O'Connor
FROM: David E. Schumacher, P.E.; Superintendent of Water Production
DATE: February 14, 2017
SUBJECT:
A Resolution Authorizing Well Maintenance Services for Well No. 101 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 well.
BACKGROUND:
Well No. 101, located at 3000 W. Galena Blvd is a shallow well with the pump and motor setting at 101 feet below the surface and is normally capable of supplying approximately 900,000 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 or the pumping level is too deep within the well, the well screen typically requires maintenance cleaning. Well 101 has experienced losses in both pumping capacity and pumping level, as a result, the well is out of service until maintenance can be completed. Layne is proposing to clean the well screen using a combination of chemical and Sonar Jet treatments. 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 estimated to be $55,000.00. A detailed breakdown of the estimated costs has been provided by Layne and is attached in a separate proposal letter.
The City of Aurora 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 chem...
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