TRANSMITTAL LETTER FOR BOARD MEETING OF JANUARY 19, 2012
COMMITTEE ON PROCUREMENT
Mr. David St. Pierre, Executive Director
Title
Authority to increase Contract 07-220-3P Primary Settling Tanks and Grit Removal Facilities, Calumet Water Reclamation Plant, to F.H. Paschen/S.N. Nielsen/IHC Construction Joint Venture, in an amount of $472,934.26, from an amount of $232,650,647.21, to an amount not to exceed $233,123,581.47, Account 401-50000-645650, Purchase Order 5000954
Body
Dear Sir:
On November 6, 2008, the Board of Commissioners authorized the Director of Procurement and Materials Management to award Contract 07-220-3P Primary Settling Tanks and Grit Removal Facilities, Calumet Water Reclamation Plant, to F.H. Paschen/S.N. Nielsen/IHC Construction, Joint Venture, in an amount not to exceed $228,474,000.00. The scheduled contract completion date is November 18, 2012.
As of January 6, 2012, the attached list of change orders has been approved. The effect of these change orders resulted in an increase in the amount of $4,176,647.21 from the original amount awarded of $228,474,000.00. The current contract value is $232,650,647.21. The prior approved change orders reflect a 1.83% increase to the original contract value.
Item 1: An extra in the amount of $462,303.55 to modify the force main discharge chamber openings and associated stop log frames in the Aerated Grit Building. Contract drawings show four stop log openings between the force main discharge chambers and the adjoining influent channel for the aerated grit chambers. During the October 2011 start-up of the new facilities, it was discovered that the velocity of the flow through the openings into the influent channel was excessively high and caused uneven flow distribution in the influent channel and aerated grit chambers. To reduce the flow velocity to provide proper functioning aerated grit facilities, the four stop log openings need to be substantially enlarged. This will require saw-cutting and removal of the installed reinforced concrete, modification of the stop log frames, and modifications to floor slab grating. The contractor submitted a cost proposal (CCO-192) for an extra in the amount of $462,303.55. The engineer reviewed the proposal, found it to be reasonable, and stated via correspondence 2405, that the Engineering Department would recommend its approval.
This change order is in compliance with the Illinois Criminal Code since the change is germane to the contract.
Item 2: An extra in the amount of $10,630.71 to undercut and backfill parts of Calumet Drive. The contract calls for paving of the Calumet Drive roadway. During construction, two locations of roadway failed the proof roll test indicating unsuitable soil in those areas. To maintain the paving schedule, the unsuitable soil had to be removed and the void back filled with compacted stone. This work is completed. Before the engineer's determination on the change order, the contractor proceeded at his own risk with this work as determined in his own best interest in executing the overall contract. The contractor submitted a cost proposal (CCO-196) for an extra in the amount of $10,630.71. The engineer reviewed the proposal, found it to be reasonable and stated via correspondence 2403, 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 two change orders to increase Contract 07-220-3P in an amount of $472,934.26 (0.2% of the current contract value) from an amount of $232,650,647.21 to an amount not to exceed $233,123,581.47.
Funds are available in Account 401-50000-645650.
Requested, Kenneth A. Kits, Director of Engineering, TEK:ECB
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 January 19, 2012
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