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Project 11 -6744 Request for Approval of Change Order No. 2 January 2, 2013 Page 3 of 4 CHANGE ANALYSIS DETAILED JUSTIFICATION The City's Pavement Management System identified Broadway from Anahurst Place to First Street as a high priority for rehabilitation. The pavement has deteriorated due to weather, age, heavy usage, and poor drainage. Portions of the adjacent curb and gutter, driveway approaches, curb ramps, and sidewalks are either missing or in disrepair and require replacement. A contract was awarded to All American Asphalt on July 16, 2012 for the rehabilitation of Broadway; the improvements include the reconstruction of the pavement, replacement of damaged concrete curb and gutter, driveway approaches, and sidewalk, and the construction of new cross gutters and wheelchair ramps. The contract documents call to cold mill 141,000 SF of the existing Asphalt Concrete (A.C.) pavement down to the existing P.C.C. pavement, remove the Portland Cement Concrete (P.C.C.) pavement, then cement treat the base and repave with new A.C. pavement. Subsequent to the cold milling operation it was discovered that the majority of the existing P.C.C. pavement is structurally sound and can be used in lieu of the cement treated base at a significant cost savings. To accommodate this revision, there is approximately 40,000 SF of P.C.C. pavement that is 2" - 4" too high and needs to be ground down. A unit price of $1.25/SF was negotiated to grind off the excess P.C.C. pavement with an estimated quantity of 40,000 SF totaling $50,000. Consequently, by modifying the street sections an estimated savings of $190,000 was realized by deleting the P.C.C. removal and cement treating; with an aggregate estimated savings of $140,000 to the contract; see attached Cost Impact Analysis. Therefore it is recommended to grind off the excess P.C.C. pavement. REVISED DETAILS