Construction Projects

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  • Current

Operations and Engineering Building - Center Street Project

In 2013 Castro Valley Sanitary District (CVSan) acquired a 73,000-square foot property located at the intersection of Castro Valley Boulevard and Center Street. Learn More
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  • Current

Aerial Pipeline and Pump Station Rehabilitation Project

Castro Valley has 14 aerial pipeline locations, and the maintenance of these lines is crucial for maintaining a healthy watershed. Learn More
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  • Current

Flume Recoating Project

As part of the project scope for CVSan District Project No. 91, Pump Station No. 4 Force main Replacement and Flume Rehabilitation Project, the Flume structure had defects that were designated to be repaired and recoated. While performing the original project repairs, the contractor discovered that the concrete within the flume was more deteriorated than initially anticipated and that the new coating would not adhere properly. Therefore, this portion of the project was not completed at that time. The final coating has been added as a change order to the Major Structures Rehabilitation 2020-21 Project of the Oro Loma Sanitary District that was awarded to H & R Plumbing to rehabilitate several large collection structures. The flume recoating project will take place in May of 2021.

Cost: $43,200
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  • Completed

Santa Maria Avenue/ Redwood Road Sewer Repair Project

CVSan knows that investment in infrastructure is key to having a high-quality sewer system that protects our community and environment. Learn More
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  • Completed

Ecotone Project

The Ecotone Project turned a degraded diked bayland behind the Castro Valley/Oro Loma Wastewater Treatment Plant into an outdoor laboratory that protects infrastructure, removes unwanted harmful nutrients from treated wastewater, and provides a renewed habitat for wetland animals. Learn More

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  • Completed

Nutrient Optimization Project

Castro Valley Sanitary District (CVSan) in partnership with Oro Loma Sanitary District (OLSD) completed the Nutrient Optimization Project in 2021 at the Castro Valley/Oro Loma Wastewater Treatment Plant (WWTP).  The purpose of this project was to optimize treatment processes at the WWTP to improve nutrient removal from wastewater. This project also included the rehabilitation of an existing shallow-water outfall (existing outfall pipelines) to convey secondary treated effluent to the Bay during wet weather events when flows exceed the contractual capacity. Learn More