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74. BID AND AWARD FOR RUBBERIZED BITUMINOUS SURFACE TREATMENT Approve the solicitation of bids for the Maricopa County Department of Transportation’s Rubberized Bituminous Surface Treatment, FY 2011 Work Order Number 30050086. Award the contract to the lowest responsive bidder, provided that the lowest responsive responsible bidder does not exceed the Engineer’s estimate by more than ten percent. This project consists of treating the existing road surfaces with a rubberized bituminous material. Replacement or installation of pavement delineation and other miscellaneous work items are required to complete the project. The project consists of approximately 101 lane miles (825,304 square yards) of road detailed in the included ROAD LIST. Supervisory District No(s): 1, 4, and 5 (C-91-10-173-5-00)

Vote: approved

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62. CONTRACT WITH D & O CONTRACTORS FOR RUBBERIZED BITUMINOUS SURFACE TREATMENT PROJECT Authorize the Maricopa Department of Transportation to award the contract for the Rubberized Bituminous Surface Treatment 2011 Project to D & O Contractor, the lowest, responsive, responsible bidder for the project. D & O’S bid of $2,330,508.31 exceeded the Engineer’s estimate by more than 10% so Board approval is being requested to allow MCDOT to award the contract to this vendor. Funding for the project is available in the Public Works (910) Transportation Operations Projects Fund (232) Roadway Maintenance (ROAD) Project Number 30050086. On May 12, 2010, the Board approved Agenda Item C-91-10-173-5-00 for the solicitation of bids for the Rubberized Bituminous Surface Treatment 2011 Project. The Board also approved the award of the contract to the lowest, responsive, responsible bidder provided that the lowest, responsive, responsible bidder does not exceed the Engineer’s estimate by more than 10%. The lowest bid for the Rubberized Bituminous Surface Treatment 2011 Project came in at 23.5 percent higher than the Engineer’s estimate of $1,886,739.22. The cost of rubber asphalt binder climbed from approximately $640 per ton in March to $837 per ton. This increase was unexpected in so short a time period. This increase in costs is not considered unreasonable given the fact of the fluctuation of asphalt binder. Supervisory Districts: 1, 4, and 5 (C-91-10-173-5-01)