Beginning on October 3, 2011 through May 9, 2012, the contractor is authorized to conduct construction activities 24-hours per day 7-days per week at the Irvington Portal in Fremont, as may be necessary to complete time critical work for the New Irvington Tunnel connections to the existing Bay Division Pipelines.
What Can I Expect?
On weekdays from 7AM to 7PM and weekends from 8AM to 5PM construction activities will focus on the crane placement of new pipe and be similar to what is currently being experienced. Outside of those hours the contractor will work on connecting and welding of pipe at the new tunnel. The operation of construction equipment (loaders, excavators and cranes) is necessary to complete this work. Worker trips to and from the site at shift changes will also take place. Tunneling is not allowed after 7PM on weekdays and 5PM on weekends. An effort will be made to complete all the work during daylight hours, and minimize work during the evenings and nights.
Will Work Take Place During the Holidays?
The contractor does not currently plan to work on Thanksgiving, Christmas or New Years Day. However, they have the ability to work on those days in order to complete their work within the extended work hour period. Residents will receive advanced notice if it becomes necessary to work on those days.
Why are Extended Hours Necessary?
This work can only be completed during the winter seasons when water demand is at its lowest. It is imperative for the contractor to finish his work and re-establish full capacity water service before water demand increases in the warmer months of Spring. In order to do this, the existing waterlines are cut out for the tunnel connections only one at a time, leaving other waterlines in service. The waterlines are drained and cut out and new connection waterlines are installed. Water service will not be impacted because there is redundant capacity in the pipelines during the winter seasons.
Please call our 24-Hour Answer Line at 866.973.1476 or visit sfwater.org/nit if you have questions or comments.