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CALIFORNIA WATERFIX PROGRAM
February 2019
OVERVIEW
• Need for WaterFix • Proposed Facilities • Current Status
SACRAMENTO/SAN JOAQUIN BAY-DELTA CRITICAL TO CALIFORNIA
• Highly altered ecosystem • Highly studied area • Some regions are 100%
dependent on Bay-Delta supplies
• Critical to California population and economy
• Unsustainable
Los Angeles Aqueduct
Colorado River Aqueduct
Conservation, Local Groundwater and Recycling
State Water Project
Bay-Delta Bay Area – 33%
Central Valley 23 to 90%
Metropolitan – 30%
Central Coast – 37%
- 30 feet Sea Level
WATER SUPPLY PATHWAY (ISLAND SUBSIDENCE BETWEEN 10-30 FT. DEEP)
Sea Level Rise
0
500
1000
1500
2000
1967 1973 1979 1985 1991 1997 2003
Levee Subsidence
KEY DELTA RISKS Seismic Risk Bay Area Faults
Fishery Declines Delta Smelt
CALIFORNIA WATERFIX IS IMPORTANT FOR CALIFORNIA
Sacramento
Stockton
Main Tunnels
South Tunnels
North Tunnels
Intermediate Forebay
Byron Tract Forebay & PS
Intakes
Head Old River Gate
CALIFORNIA WATERFIX
SYSTEM CONFIGURATION
North Tunnels
Main Tunnels
South Tunnels
RIVER INTAKE LOCATIONS
3000 cfs 3000 cfs 3000 cfs
RIVER INTAKES
Sedimentation Basin 1
Sedimentation Basin 2
Outlet shaft
Sediment drying lagoons
PROTECTING FISH
• Screen spacing – 1.75mm • Flow approach velocity = 0.2 ft/sec
TUNNEL REACHES
Intakes
Intermediate Forebay
Byron Track Forebay
Intakes Intakes
Staten Island Shafts
Bouldin Island Shafts
Bacon Island Shafts
SHAFTS
Shaft Diameter (feet)
Depth (feet)
Permanent (Yes/No)
Launch 110 180 Yes
Receiving 85 180 Yes
Intermediate* Contractor sized
Contractor sized No
*Shaft to be used for ventilation and/or TBM maintenance
TUNNELS
Tunnel Number of Tunnels
Internal Diameter (feet)
Length (miles)
North Tunnel 2 28 2 & 4.8
1 40 6.7
Main Tunnels 2 40 30
South Tunnel 2 40 1.6
TUNNELS
• 150 ft below grade
• 2-foot thick concrete liner
• Pressurized face tunnel boring machine
• 700,000 Tunnel Segments • 30 Million Cubic Yards of
Excavated Tunnel Material • 10-12 TBMs Operating
Simultaneously
90 ft 40’ 40’
45’
150 ft max depth
45’
Approximately 150’
90 ft
45’
40’
90’
TUNNEL LINING SYSTEM
• Single pass segmental concrete liner
• Single or dual gasket (tbd) • Bolted radial joints • Doweled circumferential • Ring = 9 Segments
including Key-Segment • Over 700,000 Segments
OVERALL HYDRAULIC PROFILE
Intake No.2
Intermediate Forebay
Byron Tract Forebay Pumping Plant
Intake No.3
EL. +1.0 FT EL. -3.0 FT EL. -17.0 FT EL. -7.0 FT
Hydraulic Gradient
-100’
-160’
0’
GEOTECHNICAL PROFILE
Ave. Ground Surface
Proposed tunnel zone
LARGE DIAMETER – TBM PROJECTS
42 43.3 45 45.5 46 47.5 49.5 50.6 51.2
57.5 58
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REVIEW OF MEGA TUNNEL PROJECTS
• The Eurasia Tunnel - Turkey Lee Tunnel - London Port of Miami Tunnel – Florida East Side Access - New York Blue Plains Tunnel Project - District of Columbia Bay Tunnel - San Francisco Willamette River Combined Sewer Outfall Program - Portland Gotthard Base Tunnel - Swiss Alps SR-99 Alaskan Way Replacement – Seattle
= projects visited by program team
INTERMEDIATE FOREBAY
Inlet Structure
Outlet Structure
Tunnels
Tunnels
37 Acre
97 Acre Footprint
1.4 miles Perimeter
2 million cy Embankment
BYRON TRACT FOREBAY
Main Tunnels
Clifton Court Forebay
South Tunnels
Byron Tract Forebay 810 Acre
BTF Pumping Plants
Connection Channel
Control Structures
South Tunnel Outlet
BTF Outlet
Control Structures
5 mile perimeter Fill 7.8 million cy
BYRON TRACT PUMPING PLANTS
Pump Unit
40-foot Main Tunnel
Pump Discharge
Pump Building Electrical Substation
Maintenance Building
Gravity/surge discharge
BYRON TRACT FOREBAY OUTLET STRUCTURE
Control Gates
Outlet Shafts
SOUTH TUNNEL OUTLET
Connection Channel
Control Gates
LOGISTICS
• Transport 700,000 segments by barge and truck • Over 30 million cubic yards of Re-useable Tunnel Material • Approximately 6,000,000 cubic yards of concrete • Over 200MW of power required to drive TBM • Approximately 27 miles of New power transmission system
required
DELTA CONVEYANCE DESIGN AND CONSTRUCTION AUTHORITY
• Single purpose public entity to design and construct project • Under contract with DWR to deliver California WaterFix facilities on
time, on budget, and in accordance with approved specifications • Participating Public Water Agencies • Will dissolve after DWR’s final acceptance of project
DELTA CONVEYANCE OFFICE AND
DESIGN AND CONSTRUCTION AUTHORITY
Provide oversight of DCA
California WaterFix
DWR Delta Conveyance Office
(DCO)
Delta Conveyance Design and Construction Authority
(DCA)
DESIGN AND CONSTRUCTION AUTHORITY
LEGAL COUNSEL
EXECUTIVE DIRECTOR
TREASURER EXTERNAL AFFAIRS
AUDIT
STAFFING & ADMIN
PROGRAM MANAGER
RISK MANAGEMENT SAFETY
CHIEF ENGINEER
ENVIRONMENTAL & PLANNING QA / QC
PROPERTY ACQUISITION
INFORMATION TECHNOLOGY &
SYSTEMS
PROGRAM CONTROLS &
CONTRACTING
CONVEYANCE MITIGATION
ENVIRONMENTAL PERMITS
OFFICE MANAGEMENT
STAFFING
PERFORMANCE MANAGEMENT
STANDARDS
PROCUREMENT/ CONTRACTING
PROG CONTROLS
GENERAL TECHNOLOGY
CENTRALIZED ADMINISTRATION
APPRAISAL & ACQUISITIONS
ROW, SURVEY & MAPPING
ENGINEERING DESIGN MANAGER
TUNNELS & SHAFTS
UTILITIES, POWER & ROADS
PUMPING PLANT
INTAKES FOREBAYS GEOTECH COMMUNICATIONS, NETWORK, SCADA
COMMISSIONING
PROGRAM ADVISORY
ORGANIZATIONAL STRUCTURE (DRAFT)
EXECUTIVE DIRECTOR REPORTS
PROGRAM MANAGER REPORTS
TECHNICAL LEADERSHIP WORK TEAM
BOARD REPORTS DCA
BOARD OF DIRECTORS
1
2
1. Estimating function will report to the Chief Engineer 2. Engineering Support function will be provided by the Engineering Design Manager Team
OVERALL PROJECT SCHEDULE
2014 Dollars 2017 Dollars
Environmental Mitigation* $367 M $401 M
Conveyance System Cost $14.9 B $16.33 B
Overall Cost $15.3 B $16.7 B
*The mitigation costs for capital and O&M for 25 years equals $796M in 2014 dollars or $870M in 2017 dollars
CAPITAL COSTS
INFORMATION
DCA Link: http://www.dcdca.org/Business_Opportunities.htm
Questions?
PROPOSED CONSTRUCTION–ANIMATION
• If time is available
PROPOSED CONSTRUCTION - ANIMATION • Check at https://californiawaterfix.com/ for detailed Animation
Videos.