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%.