Central Redwood City Recycled Water Project Phases IIA,IIB and IIC
|Sponsoring Agency||City of Redwood City|
|Public or private land?||()|
|Start Date||January 1, 2015|
|End Date||January 30, 2019|
|Location Description||This project is located in Redwood City, in San Mateo County and is part of the IRWMP's western sub-region.|
The Central Redwood City Recycled Water Phases IIA, IIB, and IIC Pipelines Project (Project) will construct a total of 2.5 miles of recycled water distribution pipeline to deliver up to 274 acre-feet per year (AFY) of recycled water to City customers. The project will be constructed with the flexibility to ultimately deliver up to 3,238 AFY.
Part 2 - Detail
The project will construct a total of 2.5 miles of recycled water distribution pipeline to deliver up to 274 acre-feet per year (AFY) of recycled water initially with capacity to ultimately deliver up to 3,238 AFY. The new pipelines will convey recycled water from the City's existing treatment, storage and pumping facilities located at Silicon Valley Clean Water (SVCW) to new and existing City water customers. The project will be constructed as three separate project components: Phase IIA, IIB and IIC. The total estimated capital cost for the three pipeline segments is $8.5 million.
The Phase IIA pipeline consists of 3,390 feet of new 30-inch diameter pipeline that will connect to a tee in the existing Phase I pipeline at the dead-end of Maple Street (near 1590 Maple Street, the location of the San Mateo County Women’s Jail). From this connection point, the new pipeline will cross underneath Highway 101 inside of an existing utility tunnel to Walnut Street, west of Highway 101, and follow Walnut Street to its intersection with Marshall Street. The Phase IIA work also includes construction of an 8-inch pipeline that runs east along Veterans Boulevard to Maple Street ending at the intersection of Maple Street and Oddstad Drive.
The Phase IIB pipeline consists of approximately 7,740 feet of new 14-inch diameter pipeline. This pipeline will connect to the Phase IIA pipeline at the intersection of Walnut Street and Marshall Street, run east along Marshall Street to Beech Street, south along Beech Street to Broadway, east on Broadway and terminate at the intersection of Broadway and Second Avenue. Construction of the IIB pipeline will require two jack and bore crossings: approximately 115 feet to cross under the light rail track at the intersection of Broadway and Chestnut Street, and approximately 225 feet to cross under the high-traffic intersection of Broadway and Woodside Road.
The Phase II.C pipeline is comprised of approximately 2,330 lineal feet of new pipeline. A new 30-inch-diameter pipeline will connect to the terminus of the Phase II.A pipeline at the intersection of Walnut Street and Marshall Street and run west along Marshall Street to Main Street. A 12-inch-diameter pipeline will extend from the intersection of Marshall and Main Street west along Marshall and terminate at the intersection of Marshall Street and Broadway.
The City's recycled water treatment and distribution system have been designed with capacity to meet the City's needs as well as provide recycled water to neighboring communities. Redwood City and its neighboring communities purchase Hetch Hetchy water from the San Francisco Public Utilities Commission. This Project will reduce the City's reliance on Hetch Hetchy supplies by offsetting potable demands on the imported water supply. This Project is located in the IRWM "West" sub-region of the San Francisco Bay Area.
If this project is not implemented, the City may not have sufficient supply to meet future demands. The City's Urban Water Management Plan includes increased recycled water use in future years to meet anticipated water demands. Without this Project, the City would need to negotiate agreements for additional Hetch Hetchy water supply and continue to rely on limited potable water supply for non-potable uses.
This Project will provide the following physical benefits:
- Provides a new recycled water supply of 274 AFY initially, with potential to provide up to 3,238 AFY in the future.
- Reduces reliance on imported water supply from Hetch Hetchy by 274 AFY
- Improves water quality of the San Francisco Bay by reducing the discharge of pollutants to the Bay