TRANSMITTAL LETTER FOR BOARD MEETING OF SEPTEMBER 3, 2026
COMMITTEE ON PROCUREMENT
Mr. John P. Murray, Executive Director
Title
Authority to increase the intergovernmental agreement with the Illinois State Toll Highway Authority and the City of Chicago (24-IGA-01) for the Streambank Stabilization Project along Higgins Creek at the Touhy Avenue Reservoir, North Side Area (NSA) in an amount of $36,603.78, from an amount of $691,348.96, to an amount not to exceed $727,952.74, Account 201-50000-612400
Body
Dear Sir:
Authority to increase the intergovernmental agreement (IGA) with the Illinois State Toll Highway Authority (ISTHA) and the city of Chicago (City) for 24-IGA-01 Streambank Stabilization Project along Higgins Creek at the Touhy Avenue Reservoir, NSA in an amount of $36,603.78, from an amount of $691,348.96, to an amount not to exceed $727,952.74.
On June 18, 2020, the Board of Commissioners (Board) granted authority to enter an IGA with the ISHTA and the City. Under the IGA, the District agreed to grant two easements to ISTHA for temporary construction and permanent maintenance of the overpass, whereby the District was compensated for the easements which were entered by separate agreements. Under the IGA, the District and the City are each responsible for paying 50 percent of the actual cost of work associated with the maintenance and reconstruction of the Creek’s banks located within the Reservoir site. On March 7, 2024, authority was granted by the Board to make the initial payment to the ISHTA for the District share of the project. The District paid ISTHA by direct voucher an amount equal to 50 percent of the District’s anticipated obligation, or $345,674.48. Upon completion and inspection of the work, the District will pay the remainder of its share of the actual cost of the work. The scheduled IGA completion date is October 15, 2026.
This IGA has no prior change orders.
Original IGA Amount $691,348.96
Date of Board Approval 3/7/2024
Cumulative Change Order $0.00
% Change of Original IGA Value 0.00%
Current IGA Value $691,348.96
Requested Increase $36,603.78
New IGA Value $727,952.74
% Change of Current IGA Value 5.29%
Total % Change of Original IGA Value 5.29%
Item 1: The first change order resulted from the installation of the temporary cofferdam in accordance with the contract requirements using the average water surface elevation provided. After installation, actual creek levels were consistently higher than indicated, causing the cofferdam to overtop and flood the work area. This differing site condition prevented the contractor from maintaining the required dry work zone and posed a risk of project delays. A change order was therefore necessary to address the condition and maintain the project schedule. The total additional cost associated with this item is $189,062.07, with the District’s cost share totaling $94,531.04.
Item 2: The second change order resulted from significant erosion observed along the restored west bank of Higgins Creek during the final inspection. Although the bank restoration had been completed in accordance with contract requirements, runoff from the adjacent roadway caused unexpected degradation of the reconstructed slope. To stabilize the area and prevent further erosion, installation of riprap was required. This corrective work resulted in additional construction costs totaling $15,925.00, with the District’s cost share amounting to $7,962.50.
In order to complete the work associated with 24-IGA-01, ISTHA approved the two above change orders totaling $204,987.07, with the District’s cost share amounting to $102,493.54. As detailed in the attached schedule, multiple pay items originally anticipated at the time of bid were not utilized to their full extent. The District’s original financial obligation had been calculated under the assumption that these pay items would be fully expended. A total of $65,889.76 of the original estimated value will be allocated to cover the District’s portion of the completed change order work. An increase of $36,603.78 is being requested at this time to satisfy the balance of the District’s cost obligation for these change orders.
The additional work has already been approved by the ISTHA and is complete.
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 agreement 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 increase 24-IGA-01 in an amount of $36,603.78 (5.29% of the current IGA value), from an amount of $691,348.96, to an amount not to exceed $727,952.747.
Funds are available in Account 201-50000-612400.
Requested, Catherine A. O’Connor, Director of Engineering, KMF:LS
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 September 3, 2026