RPU WATER SUPPLY PLAN UPDATE

October 7, 2011

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.

Overview of Water Supply Planning

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

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

Riverside Water Demand

0

20,000

40,000

60,000

80,000

100,000

120,000

2000 2005 2010 2015 2020 2025 2030 2035

Dem

an

d (

AF

Y)

Year

Shortage /

Need

Developed

Resources

Demand could exceed local developed supply by 2015:

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

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

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

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

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

Capture and store storm water in channel and off-stream

Operate during and after storm events

Generally below 500 cfs water flow

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

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

• 160 – 24,000 AFY

• Expected Average = 4,000 AFY

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

Riverside North Water Supply Program

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

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

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

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)

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%

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%

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

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

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)

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

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

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

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

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

HDR Facilities Plan Scope of Work

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

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!

Estimated Capital Cost = $500,000,000 ($2,200/AF)

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.

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

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

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

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

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

Arlington - Central Pipeline

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

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

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

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

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

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

2011 2012 2013 2014

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

2011 2013 2015 2017 2019

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

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)

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

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

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

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!

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.