Ten Year Infrastructure Renewal Program (CIP)
$53 Million, Ten Year Plan
Following an extensive evaluation of the District’s operations and infrastructure, in 2010 the District adopted a comprehensive financial and 4-year sewer service rate plan to provide revenue for needed collection system, pump station, pipeline and treatment plant renewal and upgrades. The work included a 10-year capital improvement plan (CIP) through 2020/21 which identified $53 million of needed sewer infrastructure improvements.
To date, the District has completed projects called out in the 2010 10-year capital improvement plan to improve reliability and redundancy at every pump station and treatment process throughout the collection system and treatment plant.
$26 Million In Treatment Upgrades Completed:
In addition to the projects identified in 2010, the District recently completed a major upgrade of the treatment plant at a cost of approximately $26 million. This upgrade has resulted in substantial improvements to water quality as well as reliability. The project included installation of a new headworks facility to remove solids entering the plant, increased both primary and secondary treatment capacity from 6 million gallons per day (MGD) to 9 MGD, and increased tertiary treatment (the third phase of treatment to “polish” water prior to releasing it into the bay) from 1 MGD to 6 MGD. In addition, a 600,000 gallon equalization basin was constructed to temporarily store flow from a peak storm event which can deliver as much as 12.5 MGD to the treatment plant. The equalization basin will serve to maintain treatment capacity during severe winter storms.
Ongoing Capital Improvements
The District continues to maintain an ongoing capital improvement program to further improve reliability and to address changing State and Federal water quality regulations. In addition, several projects target the reduction of ground water infiltration into the treatment system. Groundwater adds to the volume of water that needs to be pumped to the treatment plant and treated, resulting in additional costs for both treatment and capital projects required to increase system capacity to protect public health and the Bay.