TRANSMITTAL LETTER FOR BOARD MEETING OF OCTOBER 1, 2026
COMMITTEE ON PROCUREMENT
Mr. John P. Murray, Executive Director
Title
Authority to increase Contract 20-087-3P Chemical Phosphorus Removal, OWRP, to IHC Construction Companies, L.L.C. in an amount of $119,571.67, from an amount of $14,344,512.49, to an amount not to exceed $14,464,084.16, Account 401-50000-645650, Purchase Order 4000124
Body
Dear Sir:
On April 3,2025, the Board of Commissioners authorized the Director of Procurement and Materials Management to award Contract 20-087-3P Chemical Phosphorus Removal, OWRP, to IHC Construction Companies, L.L.C., in an amount not to exceed $14,226,000.00, plus a five (5) percent allowance for change orders in an amount of $711,300.00, for a total amount not to exceed $14,937,300.00. The scheduled contract completion date is May 2, 2027.
As of September 18, 2026, the attached list of change orders has been approved.
Original Contract Amount $14,226,000.00
Date of Board Approval 4/3/2025
Cumulative Change Order (9/18/2026) $118,512.49
% Change of Original Contract Value 0.83%
Current Contract Value $14,344,512.49
Requested Increase $119,571.67
New Contract Value $14,464,084.16
% Change of Current Contract Value 0.83%
Total % Change of Original Contract Value 1.67%
During construction, it was determined that the existing 36-inch Return Activated Sludge (RAS) pipeline, located east of the secondary containment area for Battery D and new Battery E, is supported at grade on a gravel bed rather than by concrete foundations as assumed during design. As a result, the contract-specified helical pile underpinning system is not required. The proposed change deletes the underpinning work and provides a temporary structural strongback support system, including steel beams, concrete pedestals, pipe supports, monitoring, and associated engineering, to maintain support and operation of the existing RAS pipeline during construction. The change also includes placement of controlled low strength material in an existing manhole that conflicts with the new secondary containment area. This modification is necessary to address the existing field conditions encountered during construction and to maintain the stability and operation of the RAS pipeline while the adjacent improvements are constructed.
The contractor submitted cost proposal (CO-08) for an extra in the amount of $251,413.31 and a credit in the amount of $126,500.00, for a net extra in the amount of $124,913.31. Following additional review and discussions with the contractor, the contractor agreed to the engineer-determined credit of $131,841.64 and to perform the extra work on a time and materials basis. Although reductions in steel quantities and vacuum truck usage are anticipated, additional costs associated with moment splices and potential installation inefficiencies cannot be fully determined until the temporary strongback system is finalized by the contractor’s licensed structural engineer. Therefore, the engineer agreed to retain the contractor’s proposed extra amount of $251,413.31 in calculating the not-to-exceed amount for the extra work to be tracked and paid on a time and materials basis. The resulting change consists of a net extra not to exceed $119,571.67, calculated by deducting the engineer-determined credit of $131,841.64 from the contractor proposed extra amount of $251,413.31. The engineer reviewed the proposal, found it to be reasonable, and stated via correspondence CO08 that the Engineering Department would recommend its approval.
This change order is in compliance with the Illinois Criminal Code since the change is due to circumstances not reasonably foreseeable at the time the contract was signed and is in the best interest of the District.
It is hereby recommended that the Board of Commissioners authorize the Director of Procurement and Materials Management to execute a change order to increase Contract 20-087-3P in an amount of $119,571.67 (0.83% of the current contract value), from an amount of $14,344,512.49, to an amount not to exceed $14,464,084.16.
Funds are available in Account 401-50000-645650.
Requested, Catherine A. O’Connor, Director of Engineering, CS:GRR:VP
Recommended, Darlene A. LoCascio, Director of Procurement and Materials Management
Respectfully Submitted, Precious Brady-Davis, Chairperson Committee on Procurement
Disposition of this agenda item will be documented in the official Regular Board Meeting Minutes of the Board of Commissioners for October 1, 2026
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