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CITY OF WEST CHICAGO
INFRASTRUCTURE COMMITTEE
AGENDA ITEM SUMMARY
ITEM TITLE:
Resolution No. 26-R-0068 - Change Order No. 1 -
MacCarb, Inc - Carbon Dioxide for Fiscal Year 2026 in an
amount not to exceed $10,000.00 for a Revised Not to
Exceed amount of $58,600.00
AGENDA ITEM NUMBER: _4~_,Y.
__
~ __
COMMITTEE AGENDA DATE: September 3, 2026
COUNCIL AGENDA DATE: September 21, 2026
STAFF REVIEW: Eddie A Ramos, Water Treatment Plant Superintendent
SIGNATURE. _________
_
APPROVED BY CITY ADMINISTRATOR: Viviana Ramirez
SIGNATURE. _________
_
ITEM SUMMARY:
Carbon Dioxide is one of the various chemicals used at the City's Water Treatment Plant. Approximately
200 tons of Carbon Dioxide are used annually. Liquid Carbon Dioxide is used in the treatment process to
stabilize the water chemistry after the softening process is complete. This process, known as
recarbonation, lowers the pH of the softened water to an acceptable level.
On August 18, 2025, the City Council approved Resolution No. 25-R-0056, awarding a contract to
MacCarb, Inc. for the procurement of liquid Carbon Dioxide for Fiscal Year 2026 in an amount of
$48,600.00. Finished water production has increased approximately 3.5% year-to-date, while Carbon
Dioxide dosage has increased by approximately 5%. As a result of the increased water production and
chemical usage, additional Carbon Dioxide will be required to maintain adequate inventory through the
remainder of the Fiscal Year 2026.
Staff recommends approving Change Order No. 1 to MacCarb's original contract for the procurement of
Carbon Dioxide for Fiscal Year 2026 in the amount not to exceed $10,000.00, bringing the total contract
value to $58,600.00.
Adequate funds are available in the Water Fund, Water Treatment Plant Operations - Chemicals (06-34-
48-4626) to cover this expenditure in FY2026.
ACTIONS PROPOSED:
Approve Resolution No. 26-R-0068 authorizing the Mayor to execute Change Order No. 1 with MacCarb,
Inc. of Gilberts, Illinois, for the procurement of Carbon Dioxide for Fiscal Year 2026 in an amount not to
exceed $10,000.00 for a revised not to exceed_amount of $58,600.00.
COMMITTEE RECOMMENDATION:

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RESOLUTION NO. 26-R-0068
A RESOLUTION AUTHORIZING THE MAYOR TO EXECUTE
CHANGE ORDER NO. 1 WITH MACCARB, INC. OF GILBERTS, ILLINOIS,
FOR THE PROCUREMENT OF CARBON DIOXIDE FOR FISCAL YEAR 2026 IN
AN AMOUNT NOT TO EXCEED $10,000.00 FOR A REVISED NOT TO EXCEED
AMOUNT OF $58,600.00
BE IT RESOLVED by the City Council of the City of West Chicago, in
regular session assembled, that the Mayor is hereby authorized to execute Change
Order No. 1 with MacCarb, Inc. of Gilberts, Illinois, for the procurement of Carbon
Dioxide for Fiscal Year 2026 in an amount not to exceed $10,000.00 for a revised not
to exceed amount of $58,600.00, in substantially the form attached hereto and
incorporated herein as Exhibit "A".
APPROVED this 21st day of September 2026.
AYES:
NAYES:
ABSTAIN:
ABSENT:
Mayor Daniel Bovey
ATTEST:
Valeria Biggerstaff, Executive Office Manager

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TO:
Viviana Rameriz
City Administrator
CITY OF WEST CHICAGO
PUBLIC WORKS
REQUEST FOR
AUTHORIZATION FOR CHANGE ORDERS
Project:
2026 Delivery of Liquid Carbon Dioxide
Change Order No. 1
Date:
8/21/2026
Contractor:
MacCarb, Inc.
I recommend that a change be made as follows to the above contract:
An (addition, extension, deduction) will be made from Station ____ to Station ___ ~
a net length of ____ miles. This change revises the total length to ____ miles.
The estimated quantities are shown below. The first addition of an item not in the
original contract under the fund type is indicated by asterisk (*).
ITEM NO.
• ITEM DESCRIPTION AND UNIT
QUANTITY
UNIT
1
Purchase addilional carbon dioxide for Fiscal Year 2026
Amount of Original Contract:
Previous Change Orders:
Net Change to Date:
% of Original Contract Price:
$48,600.00
$0.00
$10,000.00
20.58%
ea
UNIT PRICE
TOTAL ADDITION/REDUCTION
$10,000.00
$10,000.00
Totals
$10,000.00
State fully the nature and reason for the change:
Finished water usage is up approximately 3.5% year-to-date, and chemical dosage
has increased by about 5%.
When the net increase or decrease to the contract exceeds $10,000 or the time of completion is increased or
decreased by 30 days or more, one of the following statements shall be checked.
Date:
Approved:
D The undersigned determine that the circumstances that necessitate this change were not
reasonably foreseeable at the time of the original contract
D The undersigned determine that the circumstances that necessitate this change were not
within the contemplation of the contract as signed.
@ The undersigned determine that this change is in the best interest of the local agency and is
authorized by law.
Date:
Attest:
Mayor Daniel Bovey
Executive Office Manager Valeria Biggerstaff