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Mill Valley / Alto Tunnel Pipeline - Fire Flow Improvement Program

Project Mill Valley / Alto Tunnel Pipeline Replacement - Fire Flow Improvement Program 
Program A2A Fire Flow Improvement Program 
Project Number F12006
Contact Zak Talbott | ZTalbott@marinwater.org 
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Map of pipeline location along Ross Sausalito Tunnel near Camino Alto
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Two people on grassy hill with trees along the top

Project Description 

Project will install new 24” pipe to replace old, vulnerable and undersized 18” and 12” fireflow deficient leak prone pipe installed in 1909. Existing pipeline alignment is in residents’ backyards and the new pipeline will be realigned to County of Marin Open Space and an undeveloped City of Mill Valley parcel. 

Benefits

The Fire Flow Improvement Program Mill Valley/ Alto Tunnel Pipeline Replacement Project will install new 24” pipeline to replace old, undersized 12” and 18” fire flow deficient pipe in the City of Mill Valley. 

Schedule and Status

Planning: Spring 2012 - Fall 2022

Design: Fall 2022 - Summer 2023

Construction: Summer 2023 - Winter 2023/24

Expenditure Schedule

Actuals Through
FY 22 (Rounded)
FY 23
Estimate 
FY 24
Estimate 
Total
$73,000
$750,000
$760,000
$1,583,000

Funding Sources 

Capital Maintenance Fund
Fire Flow Improvement Program Fund
Total
-
$1,583,000
$1,583,000