RPU WATER SUPPLY PLAN UPDATE October 7, 2011

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1 RPU WATER SUPPLY PLAN UPDATE October 7, 2011

2 Overview of Water Supply Planning Develop a safe, reliable, local, sustainable, and cost effective water supply to maintain Riverside s water independence for the next 100 years. Objective has remained unchanged throughout the planning history. Means to achieve the objective has changed, as better information becomes available.

3 Overview of Water Supply Planning Increase local water supply through: Diversification of water supply portfolio Fully develop groundwater basins Improve management of groundwater basins Increased use of recycled water Direct delivery to offset potable demand Groundwater recharge Development of surface water supplies Seven Oaks Dam Santa Ana River Rubber Dam Mockingbird Canyon Dam

4 Riverside Groundwater Basins Extraction/Export Rights Bunker Hill 53,426 AFY Export Colton 2,728 AFY Export Riverside North 11,351 AFY Export Riverside South 16,880 AFY Extraction 84,385 AFY Total

5 Demand (AFY) Riverside Water Demand Demand could exceed local developed supply by 2015: 120, ,000 80,000 60,000 Shortage / Need Developed Resources 40,000 20, Year

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7 Project Discussion - Outline 1. Seven Oaks Dam Groundwater Recharge for Bunker Hill Basin 2. Riverside North Water Supply Groundwater Recharge for Riverside North Basin Santa Ana River Inflatable Dam Pellissier Ranch recharge basins 3. Arlington Basin Water Supply Groundwater Recharge for Arlington Basin Joint Projects with WMWD Water Diversion from Mockingbird Canyon Dam 4. Recycled Water Project Bridge for groundwater recharge Includes direct delivery elements

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9 Seven Oaks Dam - Height = 510 feet ; Gross capacity = 145,000 AF

10 Seven Oaks Dam Water Supply Project Water Rights secured for up to 198,000 AFY Western Municipal Water District for RPU San Bernardino Valley Municipal Water District Expected Average Yield = 40,000 AFY Approximately 11,000 AFY for export by Riverside Water released to settling basins and SAR for recharge Ongoing discussions with Watermaster and stakeholders for favorable water accounting and carryover Expected cost to RPU $8,000,000 - $10,000,000 capital Payment not yet made Annual O&M agreement with SBVWCD = $110,000 (RPU share) Average $200 per acre foot resource cost

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12 Seven Oaks Dam Efforts Working with WMWD & SBVMWD to complete Watermaster accounting practices Negotiations with WMWD & SBVMWD on water rights cost share agreement Negotiations on O&M cost share with WMWD, SBVMWD & SBVWCD For Future Board Consideration: Capital and O&M payments to WMWD & SBVMWD Participate in future diversion pipeline projects to complete Seven Oaks Dam water capture Develop supplemental production and conveyance agreement with WMWD to ensure RPU full take of new water right

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14 Riverside North Water Supply Program Integrated Program of recycled and surface water supply Phased program through 2020 Surface Water Capture Recharge groundwater basins in Colton and North Riverside Santa Ana River diversion for non-potable or groundwater recharge Facilitate groundwater recharge using recycled water Recycled Water Program Direct delivery for landscape irrigation use Groundwater recharge in Riverside and Arlington Basins

15 Riverside North Water Supply Program Capture and store storm water in channel and off-stream Operate during and after storm events Generally below 500 cfs water flow

16 Riverside North Water Supply Program Project Elements Inflatable dam across SAR (preliminary 8 diameter) 40 surface acres in stream recharge behind dam Off stream diversion structure Riverside Canal Adjacent recharge basins Recharge Basins at Flume Well Tract City owned parcels Adjacent to Santa Ana River Multiple beneficiaries (RPU, SBVMWD, WMWD, Colton) Riverside Canal diversion to Pellissier Ranch parcel Use Riverside Canal and SBCFCD Highgrove Channel Construct 40+/- acres of recharge basins (size and location TBD) Connection to State Water Project Pipeline Facilitate recharge during dry year conditions

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20 Riverside North Water Supply Program Annual Recharge In stream recharge 5,400 16,800 AFY Expected Average = 7,700 AFY Flume Tract Recharge Basins 800 8,300 AFY Expected Average = 2,500 AFY Pellissier Recharge Basins ,000 AFY Expected Average = 4,000 AFY

21 Riverside North Water Supply Program Environmental Impact Report underway Expect publication November 2011 Water Rights application pending EIR Western Municipal Water District for RPU San Bernardino Valley Municipal Water District Ongoing discussions with WMWD & SBVMWD on cost share Expected cost to RPU $5,000,000 - $8,000,000 capital Average $200 per acre foot resource cost

22 Riverside North Water Supply Program Efforts Commence design of rubber dam and off-stream facilities, including preliminary design at Pellissier Ranch Execute cost share agreement with WMWD & SBVMWD Commence water rights application with State Water Resources Control Board upon publication of Draft EIR Retain consultant to assist with water rights process & hearing Develop supplemental production and conveyance agreement with WMWD to ensure RPU full take of new water right

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24 Arlington Basin Recharge Project Joint program with Western Municipal Water District WMWD proposes construction of recharge basins City program to supplement recharge with excess recycled and storm water City delivery through Riverside Canal, as extension of non-potable conveyance agreement New outlet piping from Mockingbird Canyon Dam Reduce flooding from storm flow releases to Jackson St. arroyo Improve water quality at Mockingbird Canyon Lake

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26 Arlington Basin Recharge Project Efforts Complete conceptual planning for Mockingbird Canyon Dam Outlet pipe and storm routing Continue to engage WMWD in recharge basin siting and environmental work Develop cost share agreement with WMWD for capital facilities to better manage Mockingbird Canyon Lake Complete cost share agreement with Riverside County Flood Control and Water Conservation District for Mockingbird Canyon Lake dredging operations

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28 RPU Recycled Water Planning History 1991 Petition to modify Fully Appropriated status of River 1994 First Riverside Recycled Water Master Plan (MWH) 2002 Water right application filed with State 2003 Recycled Water Master Plan Update (Parsons) 2007 Program Environmental Impact Report adopted 2008 Water Rights Permit granted by State 2008 City Council Concept Approval for Recycled Water 2008 City Council adopts Purple Pipe plumbing ordinance 2011 Recycled Water Facility Plan Complete (HDR)

29 Current Recycled Water Operation 38,000 AFY Water Quality Control Plant Operation 6,300 AFY In-Plant Use 300 AFY recycled (area businesses and WQCP) 31,700 AFY actual discharged to SAR Discharge to SAR 83% In-plant use 16% Recycled Water 1%

30 Future Recycled Water Operations 52,400 AFY Plant Operation 7,100 AFY In-Plant Use 25,000 AFY Required flow to Santa Ana River 20,300 AFY Available for Recycling Discharge to SAR 47% In-plant use 13% Recycled Water 38%

31 Recycled Water Facilities First Recycled distribution pipeline installed in 1997 Over 4 miles installed to date Built in conjunction with street improvement projects Sizing guided by Recycled Water Master Plan Recycled Water infrastructure investments: $6,730,000 Transmission and Distribution Pipelines $1,300,000 Engineering/Pre-Engineering Reports $ 500,000 Water Rights Process $8,530,000 Current Total

32 Current Recycled Water Facilities Existing Purple Pipe infrastructure and potential customers: Van Buren Boulevard; Jurupa Av. to Cypress Av. Van Buren Golf Course (existing service) Medians and Parkways (pending final connection) Jurupa Avenue; Van Buren Blvd. to Payton Av. Riverside Energy Resource Center (existing service) Medians and Parkways (pending final connection) Jurupa Avenue; Van Buren Blvd. to Rutland Av. (under construction) Rutland Park Medians and Parkways

33 Current Recycled Water Facilities Central Avenue; SR91 to Fairview Av. (awaiting connecting infrastructure) Olivewood Memorial Park Poly High School / Alcott Elementary School Medians and Parkways Gibson Street; Victoria Av. to Cleveland Av. (interconnect w/ WMWD) Arlington Heights Sport Park (existing service)

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35 2008 City Council Conceptual Approval City-wide network of purple pipes to distribute water Large diameter pipelines to interconnect canals Service to: Parks Schools Public landscapes (medians/parkways) Large commercial sites Agricultural areas (pending research on crops) Based on this approval, HDR, Inc. hired to prepare Facility Plan Update

36 HDR Facilities Plan Scope of Work Recycled Water Supply Assessment Assess available flows annual, monthly, daily RPU Customer Market Analysis Current Recycled Water Demand Approximately 300 AFY Prospective Demand (excluding greenbelt) 739 use sites identified Approximately 10,083 AFY

37 HDR Facilities Plan Scope of Work Greenbelt Assumptions: Initial plan (2008) contemplated use of canals 20,000 AF+ demand in greenbelt Common in other communities Strong grower opposition to proposal HDR Plan assumed no deliveries to citrus groves Eliminated use of Gage Canal Included distribution pipelines to commercial lots as final phase

38 HDR Facilities Plan Scope of Work Hydraulic Model of Distribution System Facility sizing and optimize pipeline locations What if scenarios Models allows for 24 hour operational simulation Satellite Treatment Plant Assessment Four potential locations evaluated Spruce Basin Arlanza Basin Tequesquite Basin Phoenix Basin Satellite plant option in general deemed not cost effective

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40 HDR Facilities Plan Scope of Work Groundwater Augmentation Evaluated five potential recharge sites Pellissier Ranch Columbia Basin Spring Brook Channel Marlborough Basin Tequesquite Arroyo Pellissier Ranch site identified as the most cost effective (10,000 AFY) Recommend Distribution System Develop phased Capital Improvement Plan

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43 Challenges with City-wide Approach Low concentration of customers outside greenbelt Significant infrastructure requirements 172 miles of pipeline 2 storage reservoirs 3 pump stations Large staffing commitment Engineering Operational Customer site supervision Customer Service

44 HDR Identified Costs Estimated Capital Cost: Pipelines $ 319,000,000 Reservoirs $ 31,000,000 Pump Stations $ 23,000,000 Advanced Treatment $ 165,000,000 Recharge Basins $ 8,000,000 Total Estimated Cost $ 546,000,000 Equivalent to $42/month for every customer Staff believed lower cost alternative was available!

45 Staff Developed Alternatives Brainstormed alternatives to meet objective at lower cost: Smaller regional distribution systems Early adoption of groundwater recharge Partner with other agencies Develop water swap with other agency Arlington groundwater basin recharge Use existing infrastructure Result was two-project alternative incorporating elements from several of these concepts & HDR Facility Plan.

46 RPU Alternative Recycled Water System Two Project Recycled Water Alternative Arlington-Central Recycled Water Pipeline Santa Ana River Pipeline to Pellissier Ranch Total Project Cost: $95 million - $9/customer/month Water Supply Increase: 5,000 AFY Groundwater Recharge (Recycled) 15,000 AFY Groundwater Recharge (Storm water) 2,300 AFY Direct Use (Recycled) 2,600 AFY Wholesale/Exchange (Recycled) Total Water Supply increase = 25,000 AFY WATER SUPPLY INDEPENDENCE FOR 100 YEARS

47 Arlington - Central Pipeline 5,000 AFY groundwater augmentation via the Riverside Canal (probable sale to WMWD) 1,000 AFY recycled + 4,000 AFY storm water 2,600 AFY for non-potable to WMWD under wheeling agreement 1,000 AFY use by customers identified adjacent to the pipeline alignment Project Implementation Timeframe: 3-5 years Estimated Cost: $25 Million

48 Arlington - Central Pipeline Project Elements Distribution System: 6 miles of transmission and distribution pipelines Arlington Av. from Van Buren Blvd. to Riverside Av. Interconnection to Riverside Canal downstream of Gage Canal tie Interconnection for wholesale service to WMWD Connection to existing Central Av. purple pipe

49 Arlington - Central Pipeline Project Elements Groundwater Recharge Groundwater recharge basins for Arlington Basin Potential joint project with WMWD Use existing Riverside Canal & WMWD pump station/pipelines Connection to Mockingbird Lake dam outlet Provide for storm water capture Diluent water for regulatory requirements Creates dual use recharge basins

50 Arlington - Central Pipeline Potential for Recycled Water Service to: Adams Elementary School Shamel Park Don Jones Park Ramona High School Jefferson Elementary School Low Park Pachappa Elementary School Olivewood Memorial Park Poly High School Alcott Elementary School Parkways and Medians

51 Santa Ana River Pipeline to Pellissier Ranch 15,000 AFY groundwater recharge 4,000 AFY recycled + 11,000 AFY storm water capture 1,300 AFY by potential customers adjacent to the pipeline alignment Potential wholesale opportunities with JCSD & RCSD Project Implementation Timeframe: 5-10 years Estimated Cost = $70 Million

52 Santa Ana River Pipeline to Pellissier Ranch Project Elements: 10 mile transmission pipeline along Santa Ana River Reuse/reline abandoned sewer main for portion In-line pump station Turnout structure from Riverside Canal Provide for storm water capture Diluent water for regulatory requirements Creates dual use recharge basins Could add advanced treatment plant to increase yield

53 Santa Ana River Pipeline to Pellissier Ranch Potential for Recycled Water Service to: Martha McLean-Anza Narrow Park Tequesquite Park Evergreen Memorial Park Evans Sports Complex (RCC) Fairmont Park Beatty Elementary School Future Soccer Park Eliminates Greenbelt component and need for long term research. No formal proposal from UCR for research project

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55 Groundwater Recharge Projects Construct percolation basins for groundwater augmentation Uses highly treated recycled water Dilution with captured storm water Alternately pumped groundwater from other basin Highly regulated by State and Regional agencies Present regulations require 4:1 dilution ratio 60 month rolling average Potential for reduction to lower ratio and/or longer period Requires groundwater modeling/tracer studies Potentially requires advanced treatment (RO and/or UV) Minimum 6 months residence time before extraction Water extracted for potable or non-potable use

56 Regulatory & Permitting Requirements California Environmental Quality Act Program EIR completed in 2007 Project level analyses/studies required Focused EIR for Groundwater Recharge Permitting California Department of Public Health Regional Water Quality Control Board State Water Resources Control Board (storm water capture) Regulatory Studies Groundwater percolation studies Groundwater Flow and Transport Modeling Study Groundwater Tracer Study Title 22 (Regional Board Regulation) Engineering Report

57 Implementation Timeline Phase 1 Phase 1 Project Arlington Central Pipeline Projected in Service Fall 2014 Construction Start Winter 2012 / Spring 2013 Assumes Concurrent Environmental and Design process Groundwater Recharge permitting by project partner(s) Concept Approval and CEQA Engineering Construction

58 Implementation Timeline Phase 2 Phase 2 Project Santa Ana River Pipeline Projected in Service Spring 2019 Construction Start Fall 2015 Assumes Concurrent Environmental and Design process Groundwater Recharge Studies budgeted in current FY Concept Approval and CEQA Studies & Engineering Construction

59 Recycled Water Project Cost Summary Preliminary Estimated Costs Treatment Plant Improvements RPU Dedicated Facilities = $13,500,000 Shared Plant Facilities = $46,500,000 Total (subject to cost share discussions) = $60,000,000 Arlington Central Pipeline Engineering/Studies = $ 4,000,000 Recycled Water Pipeline = $18,500,000 Mockingbird Dam Pipeline = $ 2,500,000 Total = $25,000,000 Pellissier Ranch Pipeline Engineering/Studies = $11,000,000 Recycled Water Pipeline = $39,000,000 Recharge Basins = $20,000,000 Total = $70,000,000 Total Project Costs = $155,000,000

60 Recycled Water Project Resource Cost Projected Water Resource Cost (including GW recharge) Capital Cost = $425/AF O&M Cost = $150/AF Total Projected Cost = $575/AF MWD Water Cost (2012) = $816/AF $942/AF HDR Project Cost = $2,200/AF (City wide program)

61 Recycled Water Efforts Complete cost share discussions with Public Works Department and memorialize in Inter-Departmental MOU Commence groundwater studies to facilitate permitting Commence permitting activities for all aspects of project, including groundwater recharge Develop cost share agreement and supplemental production and conveyance agreement with WMWD Commence design of Arlington Central Pipeline facilities

62 Fiscal Impact Seven Oaks Dam Funds are budgeted and available for payment of water rights cost share Funds for enhanced recharge facilities included in current finance plan and Water CIP Riverside North Recharge Project Funds are budgeted and available for project permitting and design Funds for RPU share of capital construction included in current finance plan and Water CIP

63 Fiscal Impact Recycled Water Project Funds for permitting, feasibility studies and design of the Arlington Central Pipeline are budgeted and available. Funds for balance of program subject to proposed water rate plan, approximately $9 per customer

64 Recycled Water Rate Plan Approximately $9 per customer per month for capital Phase in over 5 years: $1.00/month effective March 2012 $1.50/month effective March 2013 $1.50/month effective March 2014 $2.50/month effective March 2015 $2.50/month effective March 2016 O&M costs recovered through normal water rate schedule Allows Riverside Water Independence for 100 years!

65 Water Supply Recommendations That the Board of Public Utilities: 1) endorse the water supply project plan and financing mechanism; 2) refer this item to the City Council Land Use Committee for input; and, 3) direct staff to bring the matter back to the Board of Public Utilities for further review.