Title
143rd Street and LaGrange Road Intersection Improvements - Contaminated Soil - Change Orders
History
At the May Committee and Board meetings, a Change Order item was prepared, presented and approved which allocated $350,000 to Brothers Asphalt Paving, Inc. (Brothers) for the added costs associated with the discovery, excavation, transport and disposal of contaminated soils found as a part of the watermain relocation project at 143rd Street and LaGrange Road.
Subsequently, at the July Committee and Board meetings, a follow-up item related to the original Change Order was presented and approved which provided for a deductive Change Order with Brothers in the amount of $149,463, leaving a not-to-exceed value of $200,537 remaining as payable to Brothers from the May action to fund the added costs associated with the contaminated soils matter.
Also at the July Committee and Board meetings, approval was provided to award a contract to RAMSCO, Inc. to test, load, manifest, transport and dispose of contaminated soils in an amount not to exceed $119,902.32 (removed $149,463 from Brothers authorization). The dollar value presented and awarded was based upon an estimate of the volume of contaminated soils that were expected to be excavated and disposed. At this time, our understanding based upon best information available, is that all contaminated soils have been excavated by Brothers as a part of the watermain relocation project at 143rd Street and LaGrange Road. The actual quantity of excavated special soil related to the watermain relocation portion of the project is now known, as we have completed the watermain installation work.
As the original contract award with RAMSCO was based upon estimated quantities, and the actual excavated quantity of contaminated soils is greater than our estimates due to the discovery of previously unknown contaminated soil, the costs for the work have exceeded Board approved limits requiring that additional funding for the remaining work be authorized. As shown on the attached exhibits, an additional $38,845.20 will be required to finish the contaminated soils work associated with the watermain project.
Further, as the watermain project was the first of what is potentially four separate utility relocation projects, we now know with greater accuracy the location and extent of the contaminated soils that will require special handling for all of the other work that remains to be performed which crosses the same areas of contamination. This knowledge has allowed us to recalculate our expected contaminated soils quantities and the associated costs to remove and dispose of them for each of the following relocation activities.
Therefore, in light of the foregoing, staff is recommending and requesting two actions regarding the management and disposal of contaminated soils related to the 143rd Street and LaGrange Road Watermain Relocation Project:
1. A second Deductive Change Order request for a further reduction of the value of the previously approved May 2010 Change Order issued to Brothers Asphalt Paving, Inc.
2. Change Order to increase the value of the contract awarded July 2010 to RAMSCO, Inc.
Environmental Engineering Oversight will continue to be provided by V3 Companies as previously requested and approved.
Therefore, it is staff’s recommendation that Deductive Change Order Number 2 with Brothers Asphalt be authorized in the amount of $25,317.50. This will result in not-to-exceed value in the amount of $175,219.50 to fund the added costs associated with the special Viton gaskets required for all pipe and fitting joints in areas of known soils contamination and for additional time required to manage and install materials in areas of known contaminated soils.
Further, it is staff’s recommendation that Change Order Number 1 be authorized to provide additional funding for the contract awarded to RAMSCO, Inc. to test, load, manifest, transport and dispose of contaminated soils that have been excavated and stockpiled by Brothers Asphalt Paving, Inc. that have been found as a part of the watermain relocation project at 143rd Street and LaGrange Road in the amount of $38,845.50, yielding an adjusted not-to-exceed contract value of $158,747.52.
With the authorization of this Deductive Change Order Number 2, the value of the contract with Brothers Asphalt will decrease from $1,403,276 to $1,377,958.50.
The Village continues to seek full reimbursement for the contaminated soils identified herein as “Village Responsibility” from every current or former operator or landowner that may be contributory to the discovered contamination.
On September 7, 2010, this item was reviewed and approved by the Public Works and Engineering Committee and referred to the Board for approval.
INFORMATION PREVIOUSLY PROVIDED AS PART OF THE SEPTEMBER 7, 2010, PUBLIC WORKS AND ENGINEERING COMMITTEE PACKET.
Financial Impact
The Fiscal Year 2010 Water & Sewer Fund budget included $1,233,482 for the 143rd Street and LaGrange Road Watermain Replacement project. The current Brother’s contract is being reduced below the previously approved value and the additional cost associated with the RAMSCO, Inc. contract will keep the total costs associated with this scope of work below the approved value. No budget adjustment is required.
Recommended Action/Motion
I move to approve authorizing Deductive Change Order Number 2 to a contract with Brothers Asphalt Paving, Inc. for the 143rd Street and LaGrange Road Watermain Relocation Project in the amount of $25,317.50, thereby decreasing the total contact value to $1,377,958.50;
And
Approve authorizing Change Order Number 1 to increase the value of the contract with RAMSCO, Inc. to test, load, manifest, transport and dispose of contaminated soils associated with the 143rd Street and LaGrange Road Watermain Relocation Project in the amount of $38,845.20, for an adjusted not to exceed contract value of $158,747.32;
And
Approve authorizing the Village Manager to execute Deductive Change Order Number 2 with Brothers Asphalt Paving, Inc. and Change Order Number 1 to the contract with RAMSCO, Inc.