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TO: Mayor Richard C. Irvin
FROM: Robert Leible, Superintendent of Water Production
DATE: June 26, 2023
SUBJECT:
A Resolution authorizing Crawford, Murphy & Tilly to provide professional engineering services to the Water Production Division for a new water well construction project, in an amount not-to-exceed of $283,000.
PURPOSE:
To obtain City Council authorization to enter into an agreement for professional engineering services with Crawford, Murphy & Tilly (CMT), Aurora, IL for the design, bidding, and construction engineering of proposed Well 105 for the Water Production Division (WPD).
BACKGROUND:
Well 103, located at 501 Orchard Rd. (Ward 5) is a shallow well, constructed in 1988, and was capable of supplying approximately 700,000 gallons per day of raw groundwater to the City of Aurora Water Treatment Plant.
During recent scheduled well maintenance, it was discovered that the original construction of the Well 103 borehole had failed. A failure of the casing/well screen allowed massive quantities of gravel pack to collapse into the well, filling up approximately 35 feet from the bottom of the borehole. Although the well was operable at the time, significant expense would be incurred to reconstruct the well, and a loss of pumping capacity is projected to occur by Layne Christensen who assisted the city in the investigation. In addition, this well location is found in the 100 year floodplain and more specifically in the floodway. As a result, a new location has been identified for the proposed Well 105, at 2390 W. Illinois Avenue, the site of fire station #10 (Ward 5). Well 103 will be properly sealed per well abandonment regulations.
Benefits of the new well will be 1) constructed outside of the floodplain; 2) a larger capacity well is expected by drilling into a deeper rock formation; 3) the new well will have a much lower potential for contamination in the deeper rock formation.
DISCUSSION:
In order to drill a new well, ensure professio...
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