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HomeMy WebLinkAbout97.Item 3 PPP Steering Committee 12-20-2017_6-17 ContingencyDistrict 6 Trunk Sewer Relief Project No. 6-17 Dean Fisher, Engineering Manager Steering Committee December 20, 2017 What is Pipe Bursting? Summary •After two pipe bursting attempts, the remaining 60 feet will be replaced using open-cut, shored construction. •Added costs include two rescues, open cut construction, additional bypass pumping and crew labor for an additional week, including overtime. •This event will likely use over half of the originally authorized contingency. •Staff recommends an additional contingency of 10% for an overall authorization of 20%.