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CITY OF WEST CHICAGO
INFRASTRUCTURE COMMITTEE
AGENDA ITEM SUMMARY
ITEM TITLE:
AGENDA ITEM NUMBER: o-A.
Resolution No. 21-R-0086 — Contract Award — Layne
Christensen Company for Professional Services Related to | COMMITTEE AGENDA DATE: October 7, 2021
the 2021 Well Station No. 7 Rehabilitation Project Sen eee AEP oor tencail
STAFF REVIEW: Mehul Patel, P.E., CFM, Director of Public Works sienature Wf
APPROVED BY CITY ADMINISTRATOR: Michael L. Guttman SIGNATURE
ITEM SUMMARY:
Well Station No. 7, located at 627 W Hawthorne Lane, is one of four City-owned shallow wells with a
Byron Jackson well pump and motor assembly set at a depth of approximately 250 feet and rated to
pump 720 gallons per minute. The well was originally constructed in 1982 and was last serviced in 2006.
The service at that time included replacement of the motor assembly and all column pipe. Starting in
2015, Well No. 7 began to exhibit a decline in capacity (gallons per minute). As of August 2021, the well
capacity was down to 621 gallons per minute. This reduced capacity is indicative of overall problems with
the well assembly. It is believed that a hole has developed in the column pipe of the well. If left
unchecked, the motor will likely experience complete failure or, in the worst case, the column pipe may
separate and drop the well pump and motor to the bottom of the casing. A casing is the pipe structure
that is placed in the hole drilled in the earth to maintain the well opening.
The well assembly is due for inspection and service. Due to its history servicing the well and original
equipment installation, staff solicited a proposal from the Layne Christensen Company to pull, inspect,
and rehabilitate the well assembly. Layne’s proposal includes a complete rebuild and rehabilitation of the
existing well equipment, including a television survey of the well casing. This proposal also contains
estimated provisions for new column pipe, cable, cleaning and re-coating of the existing column pipe,
and overall inspection of all well components. The estimated total for these services is $89,657.00. One
additional item addressed in this proposal is replacement of the well motor, if needed. The existing motor
has a mercury seal system, which needs to be inspected before reinstallation. If inspection determines
the unit cannot be reused, a new motor has been quoted at $63,989.00, for a total worst-case scenario
project cost of $153,646.00. At this time staff does not foresee a need to replace the motor. Following
service, the well assembly will be re-installed, tested, and returned to service.
City staff recommends the rehabilitation of the well assembly before the start of our proposed 2022
Booster Station Rehabilitation Projects. To accomplish this, staff recommends that the City Council
authorize the Mayor to execute a contract with Layne Christensen Company, for an amount not to
exceed $153,646.00, for services necessary to remove, inspect, repair, re-install, test and place the well
assembly at Well Station No. 7 back into operation.
There is $200,000.00 budgeted in the Water Fund (06-34-47-4420) for pump station repairs, which is
adequate to rehabilitate Well Station No.7, including the replacement of the motor, if needed.

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CITY OF WEST CHICAGO
ACTIONS PROPOSED:
Approve Resolution No. 21-R-0086 authorizing the Mayor to execute a contract with the Layne
Christensen Company, for an amount not to exceed $153,646.00 for professional services related to the
2021 Well Station No. 7 Rehabilitation Project.
COMMITTEE RECOMMENDATION:
The Infrastructure Committee voted 5-0 for approval.