For City Council Meeting [December 10, 2019]
TO: Honorable Mayor and City Council
APPROVAL: Rod Foster, City Administrator
FROM: Savat Khamphou, P.E., Public Works Director/City Engineer
Title
Request City Council to Approve Contract Change Order Nos. 1 & 2 in the amount of $185,470.12 for the Valley Boulevard/Cactus Avenue and Linden Avenue Street Improvements Project, City Project 140802.
(ACTION)
Body
BACKGROUND:
On July 23, 2019, City Council awarded a construction contract to H & H General Contractors, Inc. in the amount of $1,065,905.30 for the Valley Boulevard/Cactus Avenue and Linden Avenue Street Improvements Project, City Project 140802.
ANALYSIS/DISCUSSION:
During construction, the need for contract change orders arose. The first was subsurface conditions encountered during construction which conflicted with the design plans. The second, was an overage of additional field quantities that were not accurately quantified in the plans and specifications. In order to avoid additional delays with costs associated with stopping the work and to ensure delivery of an acceptable final product, staff is requesting approval of the contract change orders. At the time of award, there was no delegation of authority for the City Administrator to approve contract change orders.
Contract Change Order No. 1
During construction of the outer lane and shoulder portions of Valley Boulevard between Spruce Avenue and Cactus Avenue, the construction inspector from Transtech Engineers discovered the pavement condition adjacent to the widening portion of the roadway to be in a distressed level. They recommended full pavement rehabilitation to provide an extended design life similar to the adjacent improvements. The approved design plans called for a removal of 2" Asphalt Concrete (AC) and installation of 2" AC over native soil. Based on the geotechnical soils report and Valley Boulevard street classification as a major arterial requiring a traffic index of 10, the rec...
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