Pump Station 4 Forcemain Replacement and Flume Rehabilitation (2016-03)

Project Description:
The primary goals of this project were to replace aging infrastructure that was identified as at-risk and to install new infrastructure at the flume to mitigate odors. The affected area for the Pump Station 4 portion of this project was a segment of Redwood Road, north of Proctor Road, and sections of Camino Alta Mira, Blackberry Lane, and Foxboro Drive. The affected area for the flume rehabilitation portion of this project was on North 3rd Street near the Hayward Senior Center.

The Pump Station 4 forcemain was relocated from an easement on private property to the streets of Camino Alta Mira, Redwood Road, and Foxboro Drive. The contractor, TerraCon Constructors, Inc., completed installing 755 linear feet (LF) of the 8” ductile iron pipe forcemain by open-cut excavation. Improvements to the existing flume structure located at the end of North 3rd Street, included replacing the maintenance hatch and reconstructing the concrete flatwork around it. Manhole Odor Eliminators (MOE) were also installed at the nearby manholes to mitigate odor around that area.

Important Dates: 

June 12, 2017 – Project was substantially completed

June 2018- Estimated project closeout


Annual Repair & Rehabilitation/Sandy Road Capacity Improvement (2016-04)

Project Description:
The 2017 Annual Repairs Project consisted of spot repairs and line replacements throughout CVSan and upsizing the trunk sewer main located on Sandy Road.

The Sandy Road portion of the project consisted of upsizing approximately 850 LF of existing 8” vitrified clay pipe (VCP) to 10” high-density polyethylene (HDPE), which will allow the trunk sewer main to accommodate peak wet weather flows. This section of the project was located on Sandy Road between the Seven Hills Road and James Avenue intersections.

By the end of the project, the contractor, Cratus, Inc., completed 13 spot repairs, five manhole installations, two full line replacements utilizing open trench construction, and 14 full line replacements utilizing pipe bursting.

Important Dates:

December 18, 2017– Project was substantially completed

June 2018- Estimated project closeout


CVSan continues to implement sewer replacements and upgrades identified in the Wastewater Collection System Master Plan to reduce the risk of sewer overflows.

Wastewater Collection System Master Plan Documents

Wastewater Collection System Master Plan Update (2016)

CVSan Capital Improvements Project Sheets

For project information, please contact the District at (510) 537-0757.