Special Committee on Bay-Delta Item 3b January 24, 2017

Transcription

1 Special Committee on Bay-Delta Item 3b January 24, 2017

2 January California WaterFix Overview Review Other Mega-Projects Cost Schedule Lessons Learned February Construction Risk Management Special Committee on Bay-Delta Item 3b Slide 2 January 24, 2017

3 DRAFT Sacramento Intakes North Tunnels Intermediate Forebay Main Tunnels Clifton Court Pumping Plant Stockton Special Committee on Bay-Delta Item 3b Slide 3 January 24, 2017

4 DRAFT Special Committee on Bay-Delta Item 3b Slide 4 January 24, 2017

5 100 year life Twin bore main tunnels 150 ft below grade Concrete segmental liner Pressurized face Tunnel Boring Machine construction 45 ft excavated diameter 40 ft finished internal diameter Photo Courtesy: Port of Miami Tunnel Special Committee on Bay-Delta Item 3b Slide 5 January 24, 2017

6 Barcelona Metro Line 9 Port of Miami SMART CA WaterFix Tuen Mun - East Madrid M30 Bypass Yangtze River Tunnel Sparvo Seattle SR99 Tuen Mun - West TBM Diameter (ft) Special Committee on Bay-Delta Item 3b Slide 6 January 24, 2017

7 700,000 tunnel segments 23 million cubic yards of excavated tunnel material Tunnel Boring Machines operating simultaneously 195 Mega Watts of power required for Tunnel Boring Machines Existing levees protect project sites Limited highway access in Delta Special Committee on Bay-Delta Item 3b Slide 7 January 24, 2017

8 Outlet Shaft Sedimentation Basin 1 Sediment Drying Lagoons Sedimentation Basin 2 Special Committee on Bay-Delta Item 3b Slide 8 January 24, 2017

9 Special Committee on Bay-Delta Item 3b Slide 9 January 24, 2017

10 Item Amount ($ Billions) Total $ PM/CM/Engineering $ 1.91 Tunnels/Shafts construction $ 6.82 Remaining construction $ 2.68 Contingency (~36% for Tunnel/Shafts and Remaining Construction) $ 3.38 Land acquisition (includes 20 % contingency) $ 0.15 Program Estimate developed in September 2015 Program Estimate in 2014 Dollars Special Committee on Bay-Delta Item 3b Slide 10 January 24, 2017

11 Organizational Structure Special Committee on Bay-Delta Item 3b Slide 11 January 24, 2017

12 Construction Phase Design Phase Lead staffing RFQ process Land Acquisition Utilities Pump Plant Intake Tunnel Clifton Court IF Utilities Site Work Tunnel Clifton Court Intake IF Pump Plant Commissioning Project Duration (Years) Note: Numbers indicate task duration in years Start Special Committee on Bay-Delta Item 3b Slide 12 January 24,

13 Year Driving Tunnel Boring Machine Pre-tunneling Post tunneling Intake 2 to Intake 3 IF to Intake 5 North Tunnel ( IF to Intake 3) Main Tunnels from IF to Staten Island Main Tunnels from Bouldin to Staten Island Main Tunnels from Bouldin to Bacon Island Main Tunnels from CCF to Bacon Island Special Committee on Bay-Delta Item 3b Slide 13 January 24, 2017

14 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 Special Committee on Bay-Delta Item 3b Slide 14 January 24, 2017

15 2.1 miles 320 ft Sand & Gravel Bedrock Bedrock Seismic Joints Special Committee on Bay-Delta Item 3b Slide 15 January 24, 2017

16 Project Information Transportation Tunnel 45 ft Internal Diameter (ID) x 2.1 mile 320 ft deep Design-Build-Operate-Transfer Completed Dec 2016, 3 months ahead of schedule Construction value US $1.3 B within budget Challenges Complex geology, seismic deformations, and high groundwater pressure Special Committee on Bay-Delta Item 3b Slide 16 January 24, 2017

17 Abby Mills Pump Station Beckton Sewage Treatment Works Lee Tunnel Special Committee on Bay-Delta Item 3b Slide 17 January 24, 2017

18 Project Information 23.6 ft ID x 4.3 mile Combined Sewer Outfall (CSO) Tunnel 160 ft deep Design-Build Completed December 2015, on schedule Construction value US $1.01 B $27 M under budget Challenges Groundwater contamination, complexity of Tunnel Boring Machine launch, and spoil removal Special Committee on Bay-Delta Item 3b Slide 18 January 24, 2017

19 Watson Island Construction Westbound Tunnel Eastbound Tunnel Dodge Island Construction Special Committee on Bay-Delta Item 3b Slide 19 January 24, 2017

20 Project Information (2) 39 ft ID x 4,200 ft Long Transportation Tunnels 120 ft deep Private Public Partnership (Design-Build) Completion May 2014, on time Opened to traffic August 2014 Construction US $668.5 million, on budget Challenges Additional geotechnical investigations were critical to confirm the ground model Special Committee on Bay-Delta Item 3b Slide 20 January 24, 2017

21 Special Committee on Bay-Delta Item 3b Slide 21 January 24, 2017

22 Project Information (4) 19 ft Railroad Tunnels 60 ft deep Design-Bid-Build Completion June 2013 Construction value US $777M, on budget Challenges Small work area, abrasive ground conditions, labor shortages, low ground cover, and minimal safe havens Special Committee on Bay-Delta Item 3b Slide 22 January 24, 2017

23 Blue Plains Tunnel Special Committee on Bay-Delta Item 3b Slide 23 January 24, 2017

24 Project Information 23 ft ID x 24,200 ft CSO Tunnel 160 ft deep Design-Build Completed Dec 2015, 3 months ahead of schedule Construction value US $330.5M, $4 M under budget Challenges Institutional resistance to change, and environmental permitting Special Committee on Bay-Delta Item 3b Slide 24 January 24, 2017

25 Special Committee on Bay-Delta Item 3b Slide 25 January 24, 2017

26 Project Information 15 ft ID x 5 mile water tunnel 110 ft deep Design-Bid-Build Completed Oct, 2014 on time Construction value US $288M, within budget Challenges Variable ground, contaminated soil, disposal of tunnel material, and high ground water pressure 3.5 bar Special Committee on Bay-Delta Item 3b Slide 26 January 24, 2017

27 Swan Island PS Westside Tunnel Eastside Tunnel Special Committee on Bay-Delta Item 3b Slide 27 January 24, 2017

28 Project Information (1) 14 ft ID x 3.5 mile 120 ft deep and (1) 22 ft ID x 6 mile 150 ft deep CSO tunnels Cost Reimbursable Fixed Fee Construction Complete Feb months ahead of schedule Construction value US $719 M, $65M under budget Challenges Schedule, existing infrastructure, groundwater, Tunnel Boring Machine breakout, soil modification, and subcontract changes Special Committee on Bay-Delta Item 3b Slide 28 January 24, 2017

29 France Switzerland Gotthard Base Tunnel Italy Special Committee on Bay-Delta Item 3b Slide 29 January 24, 2017

30 Project Information (2) 30 ft ID x 35 mile rail tunnel Up to 6,560 ft deep Completed June 2016 within schedule (17 years) Final construction cost $12.5B over budget by $0.8B Challenge: Safety, geology For the 2 main tunnels and the safety, ventilation and cross cuts, a total of 95 miles tunnel has been bored Special Committee on Bay-Delta Item 3b Slide 30 January 24, 2017

31 Top of tunnel Underground View Special Committee on Bay-Delta Item 3b Slide 31 January 24, 2017

32 Project Information 53 ft ID x 2 mile transportation tunnel Design-Build Construction schedule approximately 2 year delay Tunnel budget $2.05B with final cost being negotiated Challenges Equipment malfunction, labor work stoppage, and unknown pile Special Committee on Bay-Delta Item 3b Slide 32 January 24, 2017

33 Aug-13 Oct-13 Dec-13 Feb-14 Apr-14 Jun-14 Aug-14 Oct-14 Dec-14 Feb-15 Apr-15 Jun-15 Aug-15 Oct-15 Dec-15 Feb-16 Apr-16 Jun-16 Aug-16 Oct-16 Dec-16 Feb-17 7,000 6,000 PM = Planned maintenance PM 6,787 ft. 5,000 PM 4,000 3,000 Dec 2013: Stoppage begins TBM exits access pit PM PM 4,449 ft. 3,088 ft. 2,000 Access pit constr begins 2,000 ft. 1,000 0 Arrival at access pit Special Committee on Bay-Delta Item 3b Slide 33 January 24, 2017

34 Proactive risk management strategy at all stages Assign risk to appropriate party Get construction input early Select project delivery method to maximize project benefits Invest in good geotechnical program and GBR Must have strong owner involvement Co-locate project team Resolve Right-of-Way and property acquisition early Resolve utility issues early Identify long lead items early Proactively manage logistical issues Develop effective program communication strategy Special Committee on Bay-Delta Item 3b Slide 34 January 24, 2017

35 February Special Committee on Bay-Delta Construction Risk Management Special Committee on Bay-Delta Item 3b Slide 35 January 24, 2017

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