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18 MARCH 2014
CITY OF ESCONDIDO
POTABLE REUSE PROGRAM
SCOTT LYNCH, P.E.
- Background
- Planning Process
- Building a Program
PRESENTATION OUTLINE
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CITY OF ESCONDIDO 18 MARCH 2014 POTABLE REUSE PROGRAM SCOTT LYNCH, - - PowerPoint PPT Presentation
CITY OF ESCONDIDO 18 MARCH 2014 POTABLE REUSE PROGRAM SCOTT LYNCH, - - PowerPoint PPT Presentation
CITY OF ESCONDIDO 18 MARCH 2014 POTABLE REUSE PROGRAM SCOTT LYNCH, P.E . PRESENTATION OUTLINE Background Planning Process Building a Program 2 BACKGROUND 3 ABOUT ESCONDIDO Water Service Stats 22 sq. miles 26,000
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BACKGROUND
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Escondido
Water Service Stats
- 22 sq. miles
- 26,000 connections
- Serving 146,000 people
ABOUT ESCONDIDO
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- Setting the Stage
- 2006 & 2009 Outfall Assessments
- 2009 IPR Concepts
- Water shortages and rates affecting agricultural customers
- Escondido’s Potable Reuse Program
- 2012 Program Manager selected
- Task 1: Program Feasibility & Financial Assessment
- Future: Implement Program
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PROGRAM BASIS
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OBJECTIVES
EVWTP Water Supply Disposal Stakeholders Invest in Local Water & Promote Rate Stability HARRF Resource Recovery
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KEY FACILITIES
HARRF 18 mgd Outfall EVWTP 75 mgd
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PROJECT DRIVER - OUTFALL
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PROJECT DRIVER - OUTFALL
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THE PLANNING PROCESS
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Basis & Flow Allocation Modeling
- How much wastewater do we have?
- How much do we need to offload?
- How much new water do we create?
Concepts
- What facilities do we need to build?
- What are the individual facility costs?
Cost Model
- What are the compiled facility costs + financing?
- What are the major considerations?
Project Refinement
- What refinements can be made to optimize costs?
- What is the action plan for the proposed program?
DEVELOPING CONCEPTS AND COSTS
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PLANNING PROCESS SYSTEMS AND KEY QUESTIONS
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Wastewater Water Recycled Water
Where do we have recoverable resources? Where do we need supplies? What assets do we have? What markets exist?
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Results Flow Tables Inputs
FLOW ALLOCATION MODEL PROCESS
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NPR Database System Flows Wastewater Flows & Storms Outfall Results
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BUILDING A SUCCESSFUL PROGRAM
NPR/AG APPROACH
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NPR/AG OPPORTUNITIES
HARRF Proposed Brine Pipeline NPR Extension & Ag Membrane Plant Existing NPR
Draft Work Product
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NPR/AG – WET WEATHER STORAGE
Draft Work Product
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HARRF
New Use Pond
NPR/Ag Concept Results
MF/RO
ASSESSING NPR/AG RESULTS
Draft Work Product
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BUILDING A SUCCESSFUL PROGRAM
POTABLE REUSE
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POTABLE REUSE OPPORTUNITIES
EVWTP Ag Membrane Plant HARRF AWPF?
Decentralized (AMP) or Centralized (HARRF)
Draft Work Product
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Centralized Decentralized
Hybrid MBR Conventional
RO all or Portion BNR all or Portion
OPTIMIZING THE SOLUTION
Draft Work Product
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Centralized Decentralized
Hybrid MBR Conventional
OPTIMIZING THE SOLUTION
Draft Work Product
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HARRF AMP MBR AWPF
PULLING THE PIECES TOGETHER
Draft Work Product
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New Use Pond IPR/DPR
PROGRAM RESULTS
Outfall okay deferral met
Draft Work Product
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BUILDING A SUCCESSFUL PROGRAM
PROGRAM PRO FORMA
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- Diversifies water portfolio
- Generates revenue for the City
- Helps stabilize rates
RESOURCE UTILIZATION
Draft Work Product
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THE JOURNEY AHEAD HAS TWO PATHS…
Draft Work Product
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Cumulative Cash Flow
FULL FINANCIAL ANALYSIS – CASH FLOW
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Reuse Outfall Years
Deferred Expenditures Post-Capital Revenue
Program Savings
Draft Work Product
- 1. Which approach is better financially?
- 2. What are the affordability impacts?
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- Acknowledgements
- City of Escondido
- Black & Veatch
- Brown and Caldwell
- Dr. Michael Welch
- Dr. Shane Snyder
ACKNOWLEDGEMENTS
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THANK YOU!
HARRF AMP MBR AWPF