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Project–At–A–Glance
WSIP Region:
Peninsula
Location
Unincorporated
San Mateo County
Construction Start
September, 2005 (First Project)
Construction Finish
May, 2013 (Last Project)
Current Status
Planning, Design, Construction, Environmental |
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The Pulgas Balancing Reservoir is seismically vulnerable, requires improvements to sanitary protections, and requires general rehabilitation of miscellaneous structural, mechanical and electrical systems. A general condition assessment was conducted that documented areas of general structural deterioration on the interior of the reservoir. The project is provided in response to the Water Quality and Delivery Reliability level of service goals.The original project has been divided into five separate projects to address required improvements and to facilitate construction. To date, two of the five projects have been completed. The remaining projects to be completed are: Discharge Channel Modifications
Description
The discharge channel modifications would increase the channel’s capacity to 250 million gallons a day (mgd). Project components would include raising the channel walls, repairing concrete cracks and exposed reinforcing steel, strengthening and interconnecting the channel floor sections, and strengthening the tall tapered wall near the Pulgas Tunnel.
| Construction Start: |
May, 2009 |
| Construction Finish: |
January, 2011 |
| Project Phase: |
Design, Environmental |
| Project Cost: |
$9M |
Structural Rehabilitation and Roof Replacement
Description
The project would include structural rehabilitation of the reservoir. This would consist of seismic retrofit of the walls, installation of a new steel frame roof, and repair of concrete cracks and exposed reinforcing steel. The general rehabilitation would also include installing a new ventilation system and sampling ports, replacing utility piping, and upgrading the electrical system.
| Construction Start: |
October, 2009 |
| Construction Finish: |
May, 2013 |
| Project Phase: |
Design, Environmental |
| Project Cost: |
$31M |
Modification of Existing Dechloramination Facility
Description
Improvements to the dechloramination and pH control facilities are necessary to address immediate compliance issues. The necessary modifications are still under evaluation; therefore the specific scope of work has not been identified. The modifications are anticipated to primarily be made to the flow measurement and control system, and to the various process control and chemical feed systems. Emphasis will be placed on chlorine removal and pH adjustment first to comply with existing regulations, with consideration towards the interdependent secondary goal of maximizing ammonia removal.
| Construction Start: |
July, 2010 |
| Construction Finish: |
November, 2011 |
| Project Phase: |
Planning, Environmental |
| Project Cost: |
$9M |
Inlet/Outlet Work
Project Completed: May, 2006
Description
The project provided new inlet and outlet piping promote better water mixing. The shutdowns associated with construction of these improvements also provided an opportunity to perform a condition assessment of the reservoir interior that has been used to help identify work associated with the Structural Rehabilitation and Roof Replacement Project.
| Project Complete: |
May, 2006 |
| Project Cost: |
$2M |
Note: Schedule and cost information shown may vary from the 2007 Approved WSIP Schedule and Budget. The information shown reflects the current forecast information published in the latest WSIP Quarterly Report. |
