TRANSMITTAL LETTER FOR BOARD MEETING OF AUGUST 8, 2013
COMMITTEE ON PROCUREMENT
Mr. David St. Pierre, Executive Director
Title
Authority to decrease Contract 04-201-4F Tollway Dam, Grout Curtain and Quarry Plugs, Thornton Composite Reservoir, Calumet Service Area, to F.H. Paschen, S.N. Nielsen and Associates LLC and Cabo Construction Corporation, Joint Venture in an amount of $1,270.00, from an amount of $71,851,378.50, to an amount not to exceed $71,850,108.50, Account 401-50000-645620, Purchase Order 5001105
Body
Dear Sir:
On December 3, 2009, the Board of Commissioners authorized the Director of Procurement and Materials Management to award Contract 04-201-4F Tollway Dam, Grout Curtain and Quarry Plugs, Thornton Composite Reservoir, Calumet Service Area, to F.H. Paschen, S.N. Nielsen and Associates LLC and Cabo Construction Corporation, Joint Venture, in an amount not to exceed $67,775,617.14. The scheduled contract completion date is May 25, 2015.
As of July 12, 2013, the attached list of change orders has been approved. The effect of these change orders resulted in an increase in an amount of $4,075,761.36 from the original amount awarded of $67,775,617.14. The current contract value is $71,851,378.50. The prior approved change orders reflect a 6.01% increase to the original contract value.
During the installation of the grout curtain at the Thornton Composite Reservoir, high permeability zones have been experienced in greater quantities than were anticipated during design. This resulted in increased quantities of standpipes, rock drilling and sand used in the backfill mix. The grout curtain is approximately 80% complete. In order to complete the perimeter grout curtain work, as specified in the contract plans and specifications, increases to the following unit price items are required; 22A, Rock Drilling - Primary Initial, Primary, Secondary, and Fan Holes, 22B, Rock Drilling - Tertiary and successive holes and 31 Sand in Grout. Additionally, it has been observed that the ground is taking less time to grout than anticipated at the time of bidding. The grout curtain is approximately 80% complete and less than 33% of the grout placement time unit price items have been used to date. This change order also decreases bid quantities 27A Grout Placement - Initial Primary, Primary, Secondary, Fan, Verification, Consolidation and 27B Grout Placement - Tertiary and Successive Holes.
Changes to these bid quantities were previously authorized by the Board of Commissioners at their meeting on October 18, 2012, for CCO-025 and CCO-026.
The contractor submitted a cost proposal (CCO-030) for an extra in the amount of $1,785,680.00 and a credit in the amount of $1,786,950.00 for a net credit work proposal in the amount of $1,270.00. The engineer reviewed the proposal, found it to be reasonable, and stated via correspondence 1113, 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.
It is hereby recommended that the Board of Commissioners authorize the Director of Procurement and Materials Management to execute a change order to decrease Contract 04-201-4F in an amount of $1,270.00 (0.002% of the current contract value), from an amount of $71,851,378.50, to an amount not to exceed $71,850,108.50.
Funds will be restored to Account 401-50000-645620.
Requested, Catherine A. O'Connor, Director of Engineering, WSS:KMF
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 8, 2013
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