Agdapkt 2010-07-26 - Laserfiche WebLink

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6.1E Page 1 ft' ..:E.....;~... .e:. ... :..R.... ..T.. .~.. .(. ~.. :::' ~~'..::': ::">~' '::' "". : ::. ., .",. '," . . . '. .' . . ~ . . . To the Honorable~~YQr,~.~d..~i.t:y:::q9:9"~U Fronl:;the;.:,C.j.. .::;::Ma:nj:.;'er July 26, 2010 SUBJECT Determination of Completion - Redwood City Recycled Water Project - Phase I - Bayfront Distribution System - Bid Package 8 (East Bayshore Road I Bair Island Road, Redwood Creek, Highway 101) and Maple.Street) ReCOMMENDATION By motion, determine that the Redwood City Recycled Water Project - Phase I - Bayfront Distribution System - Bid Package 8 (East Bayshore Road, Bair Island Road) Redwood Creek, Highway 101, and Maple Street) (the "Project") is complete. BACKGROUND On February 9, 2009, the City Council awarded the construction for the Redwood City Recycled Water Project - Phase I - Bayfront Distribution System - Bid Package 8 Project to the lowest responsible bidder, Peak Engineering, Inc., of San Francisco, for their responsive and responsible low bid of $949J450.00 and authorized the City Manager to increase the contract amount up to 10% if necessary. Sixteen bids were received at the bid opening on January 21, 2009. The low bid of $949,450.00 from Peak Engineering, Inc., was 38% lower than the engineer's estimate of $1,550,000.00 for the cost of constru.ction. Staff attributed more bidders and lower bid amounts than typical to a very competitive bidding environment due to the economic downturn. This project is the ninth recycled water distribution pipeline construction project. The work extended the recycled water transmission piping system from Redwood Shoresl Bair Island bike path to Seaport Boulevard between Bair Island Road and Maple Street. More than 1,840 linear feet of 24-inch diameter PVC (polyvinyl chloride) and welded steel pipe were installed along East Bayshore Road, Bair Island Road, Redwood Creek, Highway 101) and Maple Street. Completion of this project in conjunction with the completion of Bid Package 5A concludes construction of Phase I of the recycled water transmission piping system. At this point, recycled water service is available to all Redwood City customers east of Highway 101. On October 12, 2009. Council authorized the City Manager to increase the contract amount up to 25% to accommodate change orders generated by unforeseeable work. Challenging site conditions on this project required additional work that included modifying bridge pipe supports, revising the bridge. pipe alignments, additional steel welding, adding an epoxy coated steel pipe, and miscellaneous modifications due to utility conflicts. The final contract amount, as determined by staff, is $1,172,826.00; 23.50% more than the contract amount initially awarded. This tentative final amount is within the 250/0 overage previously authorized by Council. Eleven (11) change orders totaling $223,376.00 would be issued. Out of the eleven change orders, ten change orders