Gravity Pipeline Outreach Meeting March 22, 2017 Regional Environmental Sewer Conveyance Upgrade
Agenda • Introduction (Teresa) • Gravity Pipeline Project – Overview (Bruce) • Procurement Process and Stages (Teresa) • Key Parts of the RFQ (Bruce) • Estimates, Budgets and Pricing (Teresa) • Early Focus Areas (Stage 1) (Bruce) • Available Information (Teresa) • Questions (Please ask anytime)
Gravity Pipeline Project – Overview • Background • Virtual tour of alignment and shafts – Horizontal – Vertical • Hydraulics – Diurnal and Seasonal Equalization • Status of EIR, Permits and Easements • Availability of SVCW Funding
REDWOOD BELMONT CITY SAN CARLOS MENLO PARK EMERALD HILLS WEST BAY SANITARY DISTRICT WOODSIDE
Problem we need to Solve Joints every 12’ in RCP Force Main thru YBM Design useful life = 25 to 50 years (ASCE; EPA) Pipe is 45 years old Originally designed for gravity flow (low pressure) Currently operating at 2.5 times design pressure 64 leaks so far; rate of failure is increasing Leaks are time-consuming, disruptive and expensive to repair . . . potentially catastrophic.
Pipe cracked (not a joint separation) Raw sewage flowing from separated and offset joint
Adjacent to airport . . . valve bonnet blew off . . . . . . raw sewage into the air
Major Failures Corrosion + Surge
Numerous Alternatives Considered 2014/2015 2013/2014 Microtunnel (deep) Open Cut in Street Tunnel Boring Machine (deep) Open Cut in Levee From SVCW Plant Lay in Slough From near Airport Lay in Lagoon Sliplining (w/ bypass) Microtunnel (shallow) Parallel Smaller Pipes Pipe Bursting (w/ bypass) Pipe Splitting (w/bypass) Swege (w/bypass) Replace in place (w/bypass)
Current Project • SVCW will share all of the studies and alternatives developed to-date • We expect to work collaboratively with the PDB during Stage 1 to refine, revise or change these concepts to best meet SVCW objectives
Virtual Tour
“60% Permit Plans” – RLS Shaft
RLS Shaft
RLS Shaft
RLS Shaft
Airport Access Shaft
Airport Access Shaft
San Carlos Drop Structure
San Carlos Drop Structure
“60% Permit Plans” – Bair Island Inlet
Bair Island Inlet Structure
Bair Island Inlet Structure
Alignment
Governors Bay Alignment
Easement Acquisition
Pulgas Creek
Geologic Profile
Hydraulics Design Storm Equalization Diurnal Equalization San Carlos Drop Structure
EIR Status • Draft EIR November 2016 • Comments Due January 2017 (very few comments) • Adoption expected April 2017
Environmental Permits • Environmental Permit Applications submitted December 2016 – COE under Pulgas Creek – BCDC – California F&WS • Expected October 2017
Easements • Affected along 3.3 miles: – Four private owners – Three public agencies • Legal Descriptions being prepared • Private acquisitions to start upon approval of EIR • Two of public agencies are members of SVCW • Currently leasing Airport Access Shaft staging area
Funding • Currently have bond capacity to obtain bonds for entire program • Pursuing less expensive funding – SRF – WIFIA
Procurement Process and Stages of Design-Build • Why Progressive Design Build • RFQ/RFP • Stage 1/Stage 2 with Phases • Schedule
Why Progressive Design Build • Accelerate completion of overall Project relative to DBB delivery • Promote a cooperative and collaborative relationship between SVCW and the PDB team • Incorporate ongoing cost modeling and take a “design -to- budget” approach • Flexibility for phased design and construction • Early and ongoing staff involvement and training
RFQ/RFP Process • Step 1: – RFQ issuance, – Pre-submittal meeting – Interviews with selected Respondents, – Shortlisting of three (or up to four) Respondents. • Step 2: – RFP issuance to short-listed Respondents, – Pre-Proposal Meeting – Confidential Meetings with each short-listed Respondent – Reference checking – Interviews – Selection of winning Respondent – Negotiation of Stage 1 Preconstruction contract
Stage 1/Stage 2 with Phases • Stage 1 – Collaboratively bring the design from a 5% to 10% level to a 60% to 70% level – Negotiate Stage 2 Contract Pricing and Schedule • Stage 2 – Final design (100%) – Construction – Testing and Start-up • Phases – As needed to move project forward
Schedule • Issue RFQ Shortly after April 13 • SOQ Submission End of May • Shortlist and RFP Early June • Proposals Due Late August • Stage 1 Approval September or October • Stage 2 Approval 2018 Construction: Two to three years
Key Parts of the RFQ • RESCU Success Factors • Gravity Pipeline Project Objectives • Risk Responsibility Matrix • Required elements of SOQ
RESCU Success Factors “Success” - collaboratively implementing an appropriate balance of the following: • Cost: Provide a complete functional conveyance system that meets the goals of the Program at the lowest practical capital and lifecycle cost . • Operations: Produce projects that are easy, efficient, and effective to operate . • Maintenance: Produce projects that minimize required maintenance . • Safety: Implement projects that are safe to construct, operate, and maintain. • Schedule: Place new wastewater conveyance system projects into operation with best practical safe speed , while maintaining the present level of service with existing facilities. • Stakeholder Impacts: Solicit, evaluate, and respond to stakeholder’s concerns, and implement a Program that best meets the combined needs of stakeholders while reaching the Program’s goals .
Gravity Pipeline Project Objectives • Quality : Provide a gravity pipeline that will be sustainable over 100 years and will reliably receive, convey and equalize wastewater flows ranging from 2 mgd to 103 mgd in full compliance with environmental requirements. • Cost: Provide a complete functional gravity pipeline and inlet facilities that meet the goals of the Project at the lowest practical capital and lifecycle cost . Provide early and ongoing total Gravity Pipeline cost predictability . • Schedule : Achieve the best practical safe speed to complete the tunnel and inlet structures so that the existing failing pipeline and pump stations can be taken out of operation as early as reasonably possible. • Risk: Generally assign to the Design-Builder the risks that the Design-Builder can reasonably anticipate and control . Assign to SVCW the risks that the Design-Builder cannot reasonably anticipate and control. • Safety: Implement an effective safety program incorporating better than industry practices . • Accountability : Design-Builder to provide for a single point of accountability for performance of all services under Stage 1 and Stage 2. SVCW to provide a single point of accountability for all direction to the Design-Builder. • Collaboration : Implement an integrated design process that collaboratively includes SVCW management, engineering, operations and maintenance as well as the Design-Build contractor and engineer to develop a design that optimally achieves SVCW success factors and Gravity Pipeline requirements . • Innovation : Apply proven technology from other locations to uniquely achieve Gravity Pipeline goals .
Risk Responsibility Matrix • Approach: Collaboratively reduce risk and then assign to PDB what the PDB can best control • Built from a thorough Risk Register prepared during project planning (biggest risk was cost over budget)
Required Elements of SOQ • Team structure (including parties responsible for shafts, tunnel, concrete segments) • Key personnel • Experience collaborating with owners • Similar projects • Safety Pass fail items, financial, insurance, bonding, etc.
Estimates, Budgets and Pricing • Budget vs Current Cost Estimate – design to budget • Indicative Pricing
Focus Areas during early PDB Preconstruction Services (Stage 1) • RLS shaft – coordination with FoP • Pipe in tunnel • Shaft construction • Benefit of Bair Island start vs environmental/permitting delay risks • Project cost and schedule
RLS shaft – coordination with FoP
Pipe in Tunnel – Alternatives • Two Pass – FRP in tunnel – HDPE lining • One Pass – HDPE lined segments • Field weld • Combisegments – Multiple layers of defense • Upstream dosing • Water and air flow • Special concrete • Monitoring
Shaft Construction - Constraints • Geotech – YBM, Sand, Groundwater • Airport Height limits – ~55’, ~45’, ~25’ • Protected species – Rail and Mouse • Traffic – Redwood Shores Parkway
Benefit of Bair Island start vs environmental/permitting delay risks Risks • Ridgeway Rail – no night work • Mouse – no work during high tides • New Biological opinion – 9 to 12 months • EIR amendment Benefits • Eliminate airport access shaft • No TBM relocation – one launch • Muck spoil on site
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