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vFR�� INDIAN RIVER COUNTY IV a.. SOLID WASTE DISPOSAL DISTRICT - BOARD MEMORANDUM cy \LpRrpA/ Date: December 31, 2012 To: Joseph A. Baird, County Administrator Thru: Vincent Burke, P.E., Director of Utility Service From: Himanshu H. Mehta, P.E., Managing Director, Solid Waste Disposal District ')J.yn. Change Order No. 1 to Mancil's Tractor Service, Inc. for Customer Convenience Subject: Center Paving Improvements (Bid No. 2012047) BACKGROUND: On June 12, 2012, the Solid Waste Disposal District (SWDD) approved the Engineer's Estimate by MBV Engineering, Inc. (MBV) in the amount of $159,500 to repave the Winter Beach, Roseland, and Gifford Customer Convenience Centers (CCC's). Subsequently, on August 21, 2012, the SWDD Board approved the award of Bid No. 20012047 to Mancil's Tractor Service, Inc. (Mancil) in the amount of$141,892.50. Mancil started the project on September 17, 2012 and substantially completed the paving of all three stations ahead of schedule on October 18, 2012. However, during the Engineer's final inspection of the Gifford CCC paving, it became evident that some portions of the paving needed to be redone due to the possibility of a sub-base issue. After reviewing the required Geotechnical testing report by Mancil as well as additional independent testing by KSM Engineering, MBV has concluded that there may be pockets of moisture deeper under the base and sub-base materials that contributed to the isolated failures of the newly placed asphalt at the Gifford CCC. The most likely explanation is the past use of the site which is the former Gifford Road landfill. Therefore, MBV has provided the attached recommendation letter with a request for a change order to Mancil in the amount of$12,500 to adequately repair the failed areas. ANALYSIS: Overall, Mancil did a great job in paving the three centers and we have received positive feedback from our customers. Since the problem could not have been foreseen and based on the latest findings and soils data, staff supports MBV's recommendation and request to issue a change order to Mancil for the repair work at the Gifford CCC. The additional $12,500 would bring the contract amount to $154,392.50, an 8.8% increase, which is still below the original Board approved engineer's estimate of$159,500. ACCOUNT INFORMATION: The repaving project was undertaken in the past fiscal year as an emergency item and was SWDD Agenda-Change Order No I to Mancil's Tractor Service CCC Paving Improvements Page—I— 134