SANITARY AND STORM SEWER COLLECTION
SYSTEM AND GREEN STORMWATER
INFRASTRUCTURE STATUS REPORT
Item (D) 3
Presented by: Mathew Nguyen and Norm Mascarinas
Transportation and Environment Committee December 2, 2024
INTRODUCTION
Storm Sewer System
• 1,100 miles of pipes
• 4,100 miles of curb & gutter
• 26,000 manholes
• 33,000 storm laterals
• 31 pump stations
• 35,500 inlets
• 1,727 outfalls
Sanitary Sewer System
• 2,030 miles of pipes
• 14 miles of force mains
• 44,000 manholes
• 198,000 laterals
• 17 pump stations
Transportation and Environment Committee 2
GOALS
Continue to focus on General Plan 2040 capacity demands to support economic development
Increase investment into the systems to address deferred maintenance infrastructure backlogs, lower operational costs, ensure capacity, prevent SSO, and improve system reliability Comply with Council Policy and regulatory requirements
(BayKeeper, MRP3.0)
Transportation and Environment Committee 3
FUNDING NEEDS – HIGH LEVEL
• Currently sufficient to support CIP
• To be adjusted annually to meet
priorities
Sanitary
Sewer
System
• No sustainable funding source
• Measure T supports Charcot
stormwater improvement project and
GSI projects (River Oaks and GSI
Projects) supplemented by Grant
Storm
Sewer
System
Transportation and Environment Committee 4
SANITARY SEWER FUNDING NEEDS
Fourth Major
Interceptor Phase
VII ($50M)
Phase III ModelIdentified Capacity
Improvement
Projects ($122M)
Pump Station
Rehabilitation
(approx. $10M)
Odor Control/Soil
Bed Filter
Rehabilitation
(approx. $50M)
Interceptor
Improvements
(TBD)
Transportation and Environment Committee 5
STORM SEWER FUNDING NEEDS
Regulatory
(Near term: $115M,
Long term: TBD)
Capacity
Improvement
Projects ($818M)
Storm Pump Station
Rehabilitation
(TBD)
Outfall
Rehabilitation/Repair
(TBD)
Transportation and Environment Committee 6
PROJECT HIGHLIGHTS
SANITARY SEWER
FISCAL YEAR 2023-2024
Transportation and Environment Committee 7
FOURTH MAJOR INTERCEPTOR PHASE VII
Transportation and Environment Committee 8
• Project will be delivered in two
phases:
• Rehabilitate approximately 5,500
LF of existing 60" Brick Sewer with
Cured-In-Place Pipe Liner
• Install approximately 5,000 LF of
new 66" PVC Lined Reinforced
Concrete Pipe.
• Cost is approximately $50M for both
phases
CONDITION ASSESSMENT /
CAST IRON REPLACEMENT PROJECTS
Transportation and Environment Committee 9
• Cleaned and video inspected 406 miles
of SS pipelines (including 95 miles by DOT)
• Completed 6.4 miles of sewer
rehabilitation for the
Exfiltration Abatement program
• Removed & replaced 2.2 miles of cast
iron pipe
• Anticipated to complete all removal and
replacement of cast iron pipe by 2025
SANITARY SEWER MASTER PLANNING
10 • Capacity Improvement Projects Status
• 48 Capacity projects completed
• Continued work on six capacity
improvement projects
• Awarded three capacity improvement
projects
• Citywide Sanitary Sewer System Modeling
• Phase III model recently identified 76
additional improvement projects ($122M)
• Ongoing Model Refinement
• Update and recalibrate the model with flow
monitoring data to confirm projects
• Consultant support to re-analyze stormwater
intrusion and groundwater
infiltration impacts in the model
Transportation and Environment Committee
PROJECT HIGHLIGHTS
STORM SEWER
FISCAL YEAR 2023-2024
Transportation and Environment Committee 11
RIVER OAKS STORMWATER CAPTURE PROJECT
Transportation and Environment Committee 12
• $12.5M in total cost with
funding from Measure T and
State Grant
• Retrofit existing pump station
and detention basin to clean
stormwater
• Construction start: September
2023
• Beneficial Use: December 2024
KELLEY REGIONAL STORMWATER CAPTURE
PROJECT
Kelley Regional Stormwater Capture
Project
• $3.0M in total cost with funding
from Measure T and State Grant
• New facility adjacent to Kelley
Park
• Currently in design with
completion scheduled for May
2025
• Bid project in Summer of 2025
• Construction starts in Winter 2025
Transportation and Environment Committee 13
CHARCOT AREA STORM DRAIN IMPROVEMENT
Measure T
funding of $25M
Project addresses low
ground elevations, high
creek water levels and
insufficient system
capacity
Rerouting
stormwater to
existing Rincon II
Pump Station
Executed
Contract: August
2024
Construction Start:
December 2024
Beneficial Use:
Fall 2025
Transportation and Environment Committee 14
LARGE TRASH CAPTURE PHASE VII
Regional Stormwater Permit
mandated trash load reduction
• Phase VII – Construction
• 6 locations ($9M)
• Leverage Caltrans funding
• Poly Carbonate Biphenyls
(PCB)
Large Trash Capture Installation
Quimby Location February 2024
Transportation and Environment Committee 15
SMALL TRASH CAPTURE DEVICE INSTALLATION
PHASE I PROJECT
Small Trash Capture Device
• $3.1M in total cost with funding
reallocated from existing Storm
Sewer Capital Funds
• Devices locate in high trash
generating areas throughout the City
• Design completed in May 2024
• Advertised for bid in June 2024, Rebid in Sept 2024
• Construction begins in December
2024
Transportation and Environment Committee 16
STORM DRAIN MASTER PLANNING
• Citywide SD System Modeling
• Refined model identified 17
high priority projects ($818M)
• Continued Model Refinement
• Use more accurate land use
and hydraulic information
• Near-term goal:
Expand to all-main and redelineate sub-watersheds for
high priority project systems to
further assess and optimize
recommended improvements
Transportation and Environment Committee 17
2023-24 WINTER STORM SEASON PREPARATION
• Coordination with Valley Water
• Pump Station Maintenance
• Charcot Temporary Pumps
• Storm Inlet Cleaning
• Debris Basin Cleaning
• Portable and Temporary Pumping
• Storm Monitoring
• Incident Management
Transportation and Environment Committee 18
December 2, 2024
SANITARY AND STORM SEWER COLLECTION
SYSTEM AND GREEN STORMWATER
INFRASTRUCTURE STATUS REPORT
Item (D) 3
Presented by: Mathew Nguyen and Norm Mascarinas
Transportation and Environment Committee