sonomawater.org
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Water Transmission
System Projects
Kent Gylfe
Director of Engineering
[email protected]
Capital Improvement Projects
O&M Projects
Planning Efforts
Occidental Rd Well #3
Drilling and Activation
• Drilling project completed in April
2024
• Topside design delayed due to well
development – advertising
December 2024
• Substantial completion in October
2025
• Plan, permit, test and implement
recharge components internally
(2026)
Santa Rosa Plain Wells Drought Resiliency
Project awarded $6.9M State Drought
Relief Grant
Sebastopol Rd Well
Activation
• Design completed and project
advertised in Nov 2023
• Underground work to be
completed in coming weeks
• Well conditioning and cycling
through Spring 2025
• ASR pilot study through Oct 2025
Kastania Tank Recoat
• Project Goals
• Recoat interior/exterior of tank
• Replace cathodic protection
• Seismic analysis/retrofits
• Modifications to tank
appurtenances
• Completed and back in
service September 2024
• Fun fact – Kastania tank
required roughly 6,850
gallons of paint to recoat –
enough to paint an average
1500 ft
2 home 250 times
Cotati #3 Recoat and
Seismic Project
• 18MG tank – largest in system
• Bids received October 2024
• Recoat interior/exterior of tank
• Cathodic protection
• Seismic retrofit of foundation
• Modifications to tank appurtenances
• Construction anticipated Feb
2025 – Jan 2026
Santa Rosa/Cotati Aqueduct
Cathodic Protection
• Project split in 2 phases based on ease
of R/W and permitting
• Phase 1
• 11 total rectifier/anode well sites
• 11 CP stations
• Phase 2 –
• 20 total rectifier/anode well sites
• 39 CP stations
• Significant coordination with PG&E
• Phase 1 design progressing with
target advertise Feb 2025
• Phase 2 design to follow with target
advertise Jan 2026
Wilfred Booster Electrical
Upgrade
• Project includes
• Replace electrical switchgear
building and components
• Add 2nd pump set and piping for
reliability/resiliency
• Capable of pumping north and south
• Electrical switchgear
prepurchase in June 2024
• Advertise scheduled for May
2025
Designs in Progress
• Bennett Valley Fault Crossing
• Seismic resiliency pipeline project
• 30% design complete with target advertise
Summer 2025
• Treatment Modernization Upgrades
• Preliminary feasibility completed Oct 2024
• Multi-phase, multi-year project with Phase 1
design kicking off
• Wohler Demuth
• Emergency storage facility
• Design kicked off with target advertise
Summer 2026
• Kawana-Ralphine-SBS Pipeline - Ph 1
• In process of finalizing scope with consultant
for phase 1 design, environmental, and right-
of-way
• Next phase will utilize recent easement
acquisition through Southeast Greenway
Tank Washout Inspections,
Visual Inspections, and
Condition Assessments
• Washout Inspections
• Ralphine 1, 2, 3 & 4
• Eldridge 1
• Sonoma 1&2
• Annadel 1 & 2
• Kawana 1 (in progress)
• Cotati 2 (FY 24/25)
• Kawana 2 (FY 25/26)
• Eldridge 2 (FY 25/26)
Comprehensive Master Plan
• Task 1 complete:
• Water System Baseline
• FY24/25:
• Task 2 – Water Demand
Forecasting
• Task 3 – Basis of Cost
Information
• Task 4 – Methodology for
Project Prioritization
• FY25/26:
• Task 5 – Generate Project
Groupings
• FY26/27:
• Task 6 – Compile Water System
Master Plan
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