TRANSMITTAL LETTER FOR THE BOARD MEETING OF AUGUST 31, 2017
COMMITTEE ON PROCUREMENT
Mr. David St. Pierre, Executive Director
Title
Authority to increase Contract 10-883-AF, Flood Control/Streambank Stabilization Project for Tinley Creek, to Industria Inc. in an amount of $223,985.00, from an amount of $7,358,539.96, to an amount not to exceed $7,582,524.96, Account 501-50000-645620, Purchase Order 40000028
Body
Dear Sir:
On September 17, 2015, the Board of Commissioners authorized the Director of Procurement and Materials Management to award Contract 10-883-AF, Flood Control/Streambank Stabilization Project for Tinley Creek, in an amount not to exceed $7,222,220.00, plus a five (5) percent allowance for change orders, in an amount of $361,111.00, for a total amount not to exceed $7,583,331.00. The scheduled contract completion date is October 6, 2019.
As of August 4, 2017, the attached list of change orders has been approved. The effect of these change orders resulted in an increase in the amount of $136,319.96 from the original amount of $7,222,220.00. The current contract value is $7,358,539.96. The prior approved change orders reflect a 1.89% net increase to the original value.
Work under Contract 10-883-AF included realignment of Tinley Creek and installation of in-stream structures to improve conveyance. Shortly after the structures were installed, large storm events in July 2016, March 2017 and April 2017, caused excessive erosion along the creek’s banks and destabilized several in-stream structures.
In spring 2017, the District conducted several site visits with the contractor and the District's design consultant, CH2M Hill, to observe the condition of the streambank and design a cost-effective repair. The District developed a scope of work to address the destabilized structures that included armoring eroded areas of the streambanks with riprap and realigning a stormwater outfall. The contractor submitted a cost proposal (CCO-012) for an extra in the amount of $223,985.00. The engineer reviewed the proposal, found it to be acceptable, and stated via correspondence 150, 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 10-883-AF in an amount of $223,985.00 (3.04% of the current contract value), from an amount of $7,358,539.96, to an amount not to exceed $7,582,524.96.
Funds are available in Account 501-50000-645620.
Requested, Marcella V. Landis, Acting Director of Engineering, WSS:JK
Recommended, Darlene A. LoCascio, Director of Procurement and Materials Management
Respectfully Submitted, Barbara J. McGowan, Chairman Committee on Procurement
Disposition of this agenda item will be documented in the official Regular Board Meeting Minutes of the Board of Commissioners for August 31, 2017
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