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CITY OF WEST CHICAGO
INFRASTRUCTURE COMMITTEE
___AGENDA ITEM SUMMARY
ITEM TITLE:
AGENDA ITEM NUMBER: &. 8.
Resolution No. 21-R-0098 — Contract Award — 2021
A ‘ : COMMITTEE AGENDA DATE: November 4, 2021
Engineering Assistance for WTP SCADA Upgrade / COUNCIL AGENDA DATE: November 15, 2021
Enhancement
STAFF REVIEW: Joseph Munder, Water Treatment Plant Superintendent SIGNATU Q
APPROVED BY CITY ADMINISTRATOR: Michael L. Guttman SIGNATURE
ITEM SUMMARY:
The Water Treatment Plant (WTP) utilizes a system of Local Control Panels (LCPs) to provide control
and data collection from the various treatment vessels and appurtenances throughout the plant. There
are ten (10) LCP’s in the Plant and each is equipped with a small computer commonly called a PLC
(Programmable Logic Controller). These PLCs serve as a local point of contact for the items (e.g.
valves) that are controllable and for items that provide feedback (e.g. meters) to the operators. The PLCs
have reached the end of their life cycle and are in need of replacement. The currently installed devices
are no longer produced by the manufacturer and replacement parts have become difficult to obtain. The
remainder of the components in the LCPs are also aged to the point where new devices are warranted.
The Variable Frequency Drives (VFDs) have also reached the end of their life cycle. These are critical
items that allow the WTP operators to control the output of finished water to the distribution system. The
controlling computer that runs the existing SCADA (Supervisory Control and Data Acquisition) software
was most recently replaced in 2015. That computer is now two iterations out of date in its basic
operation software (Windows 7 versus Windows 11). A new SCADA computer will be needed as well as
a new or upgraded software package will be required to complete the upgrades and enhancements
planned. It is in this light that staff has recommended a replacement and enhancement project for the
SCADA System as well as the VFDs. The complexity of the contemplated plan has led staff to request
engineering assistance in preparing plans and specifications for the intended project.
Four engineering firms were contacted and proposals were requested. Each of the firms participated in
preliminary discussions with WTP staff to determine the scope and range of the planned upgrades and
enhancements. Each of these firms can be considered expert in SCADA engineering and design. Trotter
and Associates, Inc. of St. Charles, IL proffered the lowest responsible proposal of $51,938.00 to provide
engineering (design and construction) services to the City of West Chicago for the WTP SCADA/LCP
project.
Staff recommends that a contract be awarded to Trotter and Associates, Inc. to provide Engineering
Services for the WTP SCADA/LCP project.
Adequate funds have been budgeted in the Water Fund, Water Treatment Plant Operations — Other
Capital Outlay (06-34-48-4806) to cover this expenditure. The cost of the actual improvements will be
budgeted for in the FY2022 budget.

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CITY OF WEST CHICAGO
ACTIONS PROPOSED:
Approve Resolution No. 21-R-0098 authorizing the Mayor to execute a contract with Trotter and
Associates, Inc., to provide engineering services for the WTP SCADA/LCP project for an amount not to
exceed $51,938.00 for Fiscal Year 2021 and extending into Fiscal Year 2022.
COMMITTEE RECOMMENDATION:
The Infrastructure Committee voted 6-0 for approval.