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Construction update (updated Sept. 19, 2023)
The 200,000-gallon Bolsa Tank has been removed and decommissioned from the District's system. Instead of replacing the nearly 50-year-old tank in Mill Valley, Marin Water merged adjacent pressure zones by adjusting existing valves and regulators such that the tank is no longer needed. With the removal, there are just four remaining redwood water storage tanks in the District's system.
Contact Information
Marin Water Construction Management team, 415-945-1560
Fire Safety and Reduced Maintenance
Bolsa tank is one of five remaining redwood tanks in the District’s system and has reached the end of its useful life and is beyond repair. Removing the tank from the system will allow for increased hydrant flows in the surrounding area, remove a known leak from the system, and reduce the overall number of District assets requiring maintenance.
| Project | Bolsa Tank Replacement (Redwood Tank) |
| Program | A1A11 Replacements - Storage Tanks |
| Project Number | D16006 |
| Contact | Hagar Negash | HNegash@marinwater.org |
Project Description
This project will merge adjacent pressure zones by activating and adjusting existing valves and regulators allowing for the removal of Bolsa Tank, a 200,000 gallon redwood tank, from the system.
Benefits
Bolsa tank is one of six remaining redwood tanks in the District’s system and has reached the end of its useful life and is beyond repair. Removing the tank from the system will allow for increased hydrant flows in the surrounding area, remove a known leak from the system, and reduce the overall number of District assets requiring maintenance.
Schedule and Status
Planning: Summer 2021 - Fall 2022
Design: Fall 2022 - Summer 2023
Construction: Summer 2023 - Winter 2023/24
Expenditure Schedule
Actuals ThroughFY 22 (Rounded) |
FY 23Estimate |
FY 24Estimate |
Total |
$47,000 |
$30,000 |
$400,000 |
$477,000 |
Funding Sources
Capital Maintenance Fund |
Other Funding Sources |
Total |
$477,000 |
- |
$477,000 |