Gravity Pipeline Outreach Meeting March 22, 2017 Regional - - PowerPoint PPT Presentation

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Gravity Pipeline Outreach Meeting March 22, 2017 Regional - - PowerPoint PPT Presentation

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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

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Gravity Pipeline Outreach Meeting

March 22, 2017

Regional Environmental Sewer Conveyance Upgrade

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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)
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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
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WEST BAY SANITARY DISTRICT SAN CARLOS BELMONT

MENLO PARK WOODSIDE

EMERALD HILLS

REDWOOD CITY

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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.

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Pipe cracked (not a joint separation) Raw sewage flowing from separated and offset joint

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Adjacent to airport . . . valve bonnet blew off . . . . . . raw sewage into the air

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Major Failures

Corrosion + Surge

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Numerous Alternatives Considered

2013/2014 Open Cut in Street Open Cut in Levee Lay in Slough Lay in Lagoon Microtunnel (shallow) 2014/2015 Microtunnel (deep) Tunnel Boring Machine (deep)

From SVCW Plant From near Airport

Sliplining (w/ bypass) Parallel Smaller Pipes Pipe Bursting (w/ bypass) Pipe Splitting (w/bypass) Swege (w/bypass) Replace in place (w/bypass)

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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

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Virtual Tour

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“60% Permit Plans” – RLS Shaft

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RLS Shaft

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RLS Shaft

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RLS Shaft

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Airport Access Shaft

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Airport Access Shaft

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San Carlos Drop Structure

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San Carlos Drop Structure

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“60% Permit Plans” – Bair Island Inlet

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Bair Island Inlet Structure

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Bair Island Inlet Structure

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Alignment

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Governors Bay Alignment

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Easement Acquisition

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Pulgas Creek

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Geologic Profile

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Hydraulics

San Carlos Drop Structure

Design Storm Equalization Diurnal Equalization

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EIR Status

  • Draft EIR November 2016
  • Comments Due January 2017 (very few comments)
  • Adoption expected April 2017
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Environmental Permits

  • Environmental Permit Applications submitted

December 2016

– COE under Pulgas Creek – BCDC – California F&WS

  • Expected October 2017
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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

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Funding

  • Currently have bond capacity to obtain bonds

for entire program

  • Pursuing less expensive funding

– SRF – WIFIA

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Procurement Process and Stages of Design-Build

  • Why Progressive Design Build
  • RFQ/RFP
  • Stage 1/Stage 2 with Phases
  • Schedule
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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

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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

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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

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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

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Key Parts of the RFQ

  • RESCU Success Factors
  • Gravity Pipeline Project Objectives
  • Risk Responsibility Matrix
  • Required elements of SOQ
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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
  • perate.
  • 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
  • peration 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.

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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.

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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)

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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.

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Estimates, Budgets and Pricing

  • Budget vs Current Cost Estimate – design to

budget

  • Indicative Pricing
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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
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RLS shaft – coordination with FoP

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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
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Shaft Construction - Constraints

  • Geotech – YBM, Sand, Groundwater
  • Airport Height limits – ~55’, ~45’, ~25’
  • Protected species – Rail and Mouse
  • Traffic – Redwood Shores Parkway
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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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Project Cost and Schedule

  • Reduce GP cost by more

than $40 million

  • Reduce GP schedule by

more than a year

  • Achieve 100 year service

life

  • Achieve diurnal and wet

weather equalization

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Available Information

  • Current
  • Future (at RFQ Issuance)
  • Self-Guided Tour Maps
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More questions?

Thank you for your interest!

Regional Environmental Sewer Conveyance Upgrade