HomeMy WebLinkAbout01 PUBLIC HEARING URBAN WATER 04-03-06 • • Agenda Item 1
Reviewed:
AGENDA REPORT City Manager
Finance Director N/A
MEETING DATE: APRIL 3, 2006 t10
0 �
TO: WILLIAM A. HUSTON, CITY MANAGER
FROM: PUBLIC WORKS DEPARTMENTNVATER SERVICES DIVISION
SUBJECT: PUBLIC HEARING FOR THE 2005 TUSTIN URBAN WATER MANAGEMENT
PLAN UPDATE
1
SUMMARY
The California Urban Water Management Planning Act (Act) was established by State Assembly Bill
No. 797 (AB-797). It requires urban water suppliers providing water for municipal services of more
than 3,000 connections or 3,000 acre-feet of water production annually, to prepare, conduct a public
hearing and adopt a plan in accordance with the prescribed requirements of the Act.
RECOMMENDATION
It is recommended that the City Council hold a public hearing at 7:00 p.m. on Monday, April 3, 2006
to respond to public comments, accept and adopt by resolution the City's 2005 Urban Water
Management Plan. Attached for the Council's information is a copy of the proposed Resolution No.
06-32.
FISCAL IMPACT
None.
BACKGROUND
An Urban Water Management Plan is for the purpose of achieving conservation and efficient use of
water supplies. The California Urban Water Management Planning Act of 1983, as amended,
requires all urban water suppliers to develop, conduct a public hearing on, and adopt an updated
Urban Water Management Plan every five years.
The City's 2005 Urban Water Management Plan has been prepared in compliance with the Act, and
includes: water service area; water facilities; water sources and supplies; water quality; water
reliability planning; water use by customer type; best management practices; a water shortage
contingency plan and water recycling. Staff is recommending that the City Council hold a public
hearing for 7:00 p.m. on Monday, April 3, 2006, to respond to public comments, accept and adopt by
resolution the City's 2005 Urban Water Management Plan.
Tim D. Serlet Fred Acl is
Director of Public Works/City Engineer Water esan er
TDS:FA:cog: PH for Urban Water Mgmt Plan.doc
RESOLUTION NO. 06-32
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF TUSTIN ADOPTING THE
CITY OF TUSTIN URBAN WATER MANAGEMENT PLAN PURSUANT TO
CALIFORNIA WATER CODE 10610 TO 10657
WHEREAS, the waters of the State of California are a limited yet renewable resource
subject to ever-increasing demands statewide; and
WHEREAS, the conservation and efficient use of urban water supplies are of statewide
concern; however, the planning for that use and the implementation of those plans can best be
accomplished at the local level; and
WHEREAS, a long-term, reliable supply of water is essential and urban water management
plans are required to effectuate the efficient use of available supplies, and
WHEREAS, the City of Tustin has completed a 2005 update to its 2000 Urban Water
Management Plan pursuant to the requirements of the Urban Water Management Planning Act of
1983 as prescribed by AB-797; and
WHEREAS, the 2005 Plan is a local resource information document and complements
other regional water planning documents, including the Municipal Water District of Orange County
and the East Orange County Water District 2005 Urban Water Management Plans, and
WHEREAS, the purpose of the City's 2005 Plan is to provide an analysis of the current and
alternative water demands, supplies, conservation activities and water shortage contingency
planning for the City; and
WHEREAS, the 2005 Plan will be updated no less than every five years to reflect changes
in local water supply trends, resource management reliability planning and conservation policies
within the boundaries of the City.
NOW, THEREFORE, BE IT HEREBY RESOLVED that the City Council of the City of Tustin
adopts the 2005 Urban Water Management Plan and orders the Plan to be filed with the State of
California Department of Water Resources.
PASSED AND ADOPTED at a regular meeting of the Tustin City Council on the 3rd day of
April 2006.
Doug Davert, Mayor
ATTEST
Pamela Stoker
City Clerk
City of Tustin
300 Centennial Way
Tustin, CA 92780
Water Service Division — Engineering
DATE: March 9, 2006
TO: MARIA HUIZAR, CHIEF DEPUTY CITY CLERK, CITY CLERK
FROM: VICTOR SAGREDO, ASSOCIATE ENGINEER, WATER SERVICES — PUBLIC WORKS
SUBJECT: CITY OF TUSTIN 2005 URBAN WATER MANAGEMENT PLAN UPDATE
Please find attached a copy of the City's 2005 Urban Water Management Plan (UWMP).
A public hearing has been scheduled for the City Council's consideration on Monday, April 3, 2006 at
7:00 PM. The purpose of the hearing will be to accept and respond to public comments (if any), and have
the Council adopt the City's 2005 Urban Water Management Plan. Enclosed for your information and
reference is a draft copy of the staff report and resolution to be considered by the City Council.
A public hearing notice will be run twice in the Tustin News, once on March 23, 2006, and again on
March 30, 2006. The notice will provide City water customers information about the hearing date set for
April 3, 2006. See enclosure.
Per the Urban Water Management Planning Act of 1983, a copy of the City's 2005 Urban Water
Management Plan must be made available at the City Clerk's Office for the public to review. A second
copy will also be available for public review at the Public Works counter. If you should have any
questions, please call either myself at (714) 573-3380, or Fred Adjarian at (714) 573-3381.
Thank you,
Vict *Engineer
Associ
Tustin Water Services
cc: Fred Adjarian
Art Valenzuela
Brian McNamara
Kathy Barr
Cee Cee Garcia
S:\Water Services\Urban Water\2005 UWMP\Letters\2005 UWMP to City Clerk 3-9-06.doc
• • Agenda Item
AGENDA
Reviewed:
A(!ENDA REPORT City Manager
Finance Director
MEETING DATE: APRIL 3, 2006
TO: WILLIAM A. HUSTON, CITY MANAGER
FROM: PUBLIC WORKS DEPARTMENTMATER SERVICES DIVISION
SUBJECT: SETTING OF A PUBLIC HEARING FOR THE 2005 TUSTIN URBAN WATER
MANAGEMENT PLAN UPDATE
SUMMARY
The California Urban Water Management Planning Act (Act) was established by State Assembly Bill
No. 797 (AB-797). It requires urban water suppliers providing water for municipal services of more
than 3,000 connections or 3,000 acre-feet of water production annually, to prepare, conduct a public
hearing and adopt a plan in accordance with the prescribed requirements of the Act. Staff is
requesting the City Council set the public hearing for Monday, April 3, 2006.
RECOMMENDATION
It is recommended that the City Council set a public hearing for 7:00 p.m. on Monday, April 3, 2006
to respond to public comments, accept and adopt the City's 2005 Urban Water Management Plan.
Attached for the Council's information is a copy of the proposed Resolution No. 06-32.
FISCAL IMPACT
None.
BACKGROUND
An Urban Water Management Plan is for the purpose of achieving conservation and efficient use of
water supplies. The California Urban Water Management Planning Act of 1983, as amended,
requires urban water supplies to develop, conduct a public hearing on, and adopt an Urban Water
Management Plan.
The City's 2005 Urban Water Management Plan has been prepared in compliance with the
requirements of the Act, and discusses: includes: water service area; water facilities; water sources
and supplies; water quality; water reliability planning; water use by customer type; best management
practices; a water shortage contingency plan and water recycling. Staff is recommending that the
City Council set a public hearing for 7:00 p.m. on Monday, April 3, 2006, to respond to public
comments, accept and adopt the City's 2005 Urban Water Management Plan.
Tim D. Serlet Fred Adjarian
Director of Public Works/City Engineer Water Services Manager
TDS:FA:ccg: Setting of PH for Urban Water Mgmt Plan&Reso#06-32.doc
-
RESOLUTION NO. 06-32
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF TUSTIN ADOPTING THE
CITY OF TUSTIN URBAN WATER MANAGEMENT PLAN PURSUANT TO
CALIFORNIA WATER CODE 10610 TO 10657
WHEREAS, the waters of the State of California are a limited yet renewable resource
subject to ever-increasing demands statewide, and
WHEREAS, the conservation and efficient use of urban water supplies are of statewide
concern, however, the planning for that use and the implementation of those plans can best be
accomplished at the local level, and
WHEREAS, a long-term, reliable supply of water is essential and urban water management
plans are required to effectuate the efficient use of available supplies; and
WHEREAS, the City of Tustin has completed a 2005 update to its 2000 Urban Water
Management Plan pursuant to the requirements of the Urban Water Management Planning Act of
1983 as prescribed by AB-797; and
WHEREAS, the 2005 Plan is a local resource information document and complements
other regional water planning documents, including the Municipal Water District of Orange County
and the East Orange County Water District 2005 Urban Water Management Plans; and
WHEREAS, the purpose of the City's 2005 Plan is to provide an analysis of the current and
alternative water demands, supplies, conservation activities and water shortage contingency
planning for the City; and
WHEREAS, the 2005 Plan will be updated no less than every five years to reflect changes
in local water supply trends, resource management reliability planning and conservation policies
within the boundaries of the City.
NOW, THEREFORE, BE IT HEREBY RESOLVED that the City Council of the City of Tustin
adopts the 2005 Urban Water Management Plan and orders the Plan to be filed with the State of
California Department of Water Resources.
PASSED AND ADOPTED at a regular meeting of the Tustin City Council on the 3rd day of
April 2006.
Doug Davert, Mayor
ATTEST
Pamela Stoker
City Clerk
PUBLIC NOTICE
NOTICE OF PUBLIC HEARING
BEFORE THE CITY COUNCIL
OF THE CITY OF TUSTIN
NOTICE IS HEREBY GIVEN that on Monday, April 3, 2006 at 7:00 p.m. in the City
Council Chambers, 300 Centennial Way, Tustin, California 92780, the City Council will
hold a public hearing on the following:
PUBLIC HEARING REGARDING A RESOLUTION OF THE CITY COUNCIL OF THE
CITY OF TUSTIN ADOPTING THE 2005 URBAN WATER MANAGEMENT PLAN
PURSUANT TO CALIFORNIA WATER CODE 10610 TO 10657.
THOSE DESIRING to testify in favor of in opposition to the plan will be given an
opportunity to do so at the public hearing. If further information is desired you may
contact the City Clerk's office at 714.573.3000. A copy of said report is on file in the
.office of the City Clerk, and is available for public inspection during regular business
hours.
Maria Huizar
Chief Deputy City Clerk
Publish: Tustin News March 23, 2006
March 30, 2006
If you have questions regarding this Public Notice please contact City of Tustin Public
Works Department at 714.573.3150.
S1Public Hearings Notices\Public Notice-uwmp.2006.doc
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TUSTIN
2006LMAR 8 PUBLIC WORKS DEPT.
1 URBAN WATER
1 MANAGEMENT PLAN
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1 2005
1
1
1
1 City of Tustin
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1 March 7, 2006
1 --Final Draft--
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' Tustin Water Services
2005 Urban Water Management Plan Table of Contents
TABLE OF CONTENTS
1 Section Paqe
' Acronyms and Abbreviations.............................................................................. ACR-1
1 Introduction
' 1.1 Purpose and UWMP Summary ............................................................. 1-1
1.2 UWMP Update Preparation .................................................................. 1-1
1.3 Tustin Water Services Area................................................................... 1-3
1.4 Tustin Water Facilities........................................................................... 1-6
' 2 Water Sources and Supplies
2.1 Water Sources......................................................................................2-1
2.2 Water Supply ........................................................................................2-3
3 Water Quality
3.1 Water Quality of Existing Sources.........................................................3-1
3.2 Water Quality Effect on Water Management Strategies and
Supply Reliability.................................................................................3-14
4 Water Reliability Planning
4.1 Reliability of Water Supplies..................................................................4-1
' 4.1.1 Regional Agencies and Water Reliability...............................................4-2
4.2 Demand and Supplies Reliability Comparison.....................................4-15
4.3 Vulnerability of Supply to Seasonal or Climatic Shortage....................4-28
4.4 Planned Water Supply Projects and Programs to Meet Projected
WaterUse...........................................................................................4-28
' 4.4.1 Tustin Water Services Projects ...........................................................4-28
4.4.2 Regional Agency Projects...................................................................4-29
' 4.5 Transfer and Exchange Opportunities.................................................4-36
4.6 Desalinated Water Opportunities ........................................................4-37
' 5 Water Use Provisions
5.1 Past, Current and Projected Water Use Among Sectors .......................5-1
' 5.2 Water Service Connections By Sector ..................................................5-2
6 Water Demand Management Measures
6.1 Introduction ..........................................................................................6-1
6.2 Determination of DMM Implementation .................................................6-2
6.3 Demand Management Measures..........................................................6-2
6.4 Water Efficiency Effectiveness............................................................6-15
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Section Paqe
7 Water Shortage Contingency Plan
7.1 Introduction...........................................................................................7-1
7.2 Stages of Action....................................................................................7-1
7.3 Estimate of Minimum Supply for Next Three Years......................... .....7-9
7.4 Catastrophic Supply Interruption Plan.................................................7-10 ,
7.5 Prohibitions, Penalties, and Consumption Reduction Methods............7-10
7.6 Revenue and Expenditure Impacts and Measures to Overcome ,
ThoseImpacts ....................................................................................7-12
7.7 Water Shortage Contingency Ordinance.............................................7-12 '
7.8 Mechanisms to Determine Reductions in Water Use ..........................7-13
8 Water Recycling
8.1 Recycled Water in Southern California..................................................8-1
8.2 Coordination of Recycled Water in Service Area...................................8-1 '
8.3 Wastewater Collection and Treatment in the City Service Area.............8-1
8.4 Regional Recycled Water......................................................................8-3 '
8.5 Potential Uses of Recycled Water.........................................................8-5
8.6 2000 Projected and Potential Uses of Recycled Water .........................8-5 ,
8.7 Encouraging Recycled Water Use.........................................................8-6
8.8 Optimizing Recycled Water Use............................................................8-7
APPENDICES
Appendix A Urban Water Management Planning Act of 1983 as Amended to 2005 '
Appendix B 2005 Urban Water Management Plan `Review for Completeness' Form
Appendix C 2005 Urban Water Management Plan 'Review for DMM Completeness" ,
Form
Appendix D Notice of Public Hearing and Resolution for Plan Adoption
Appendix E References '
Appendix F Resolution No. 92-15 —Tustin Water Shortage Contingency Plan
Adoption and Ordinance No. 1060 —Adoption of Water Management Plan '
Appendix G Draft Water Shortage Stage Resolution
Appendix H Individuals and Organizations Consulted ,
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2005 Urban Water Management Plan Table of Contents
TABLES
Table Paqe
' 1.2-1 Tustin Water Services UWMP Development — Coordination and Public
Involvement................................................................................................1-3
1.3-1 City of Tustin Average Temperatures and Rainfall............................................1-5
1.3-2 TWS Population Projections.............................................................................1-6
2.2-1 TWS Current and Projected Water Supplies.....................................................2-3
2.2-2 Imported Water Connections.............................................................................2-4
2.2-3 TWS Existing Reservoir Storage Capacities.....................................................2-5
2.2-4 Orange County Groundwater Basin - Groundwater Spreading Systems...........2-8
' 2.2-5 TWS Active and Planned Wells ........................................................................2-9
2.2-6 Amount of Groundwater Pumped ..........................___.......... ................. ......2-10
2.2-7 Amount of Groundwater Projected to be Pumped...........................................2-10
4.1.1-1 SWP Table A Deliveries from the Delta ............................................................4-5
4.2-1 Metropolitan Regional Import Water Supply Reliability Projections for
Average and Single Dry Years........................................................................4-16
4.2-2 Metropolitan Regional Import Water Supply Reliability Projections for
Average and Multiple Dry Years .....................................................................4-18
4.2-3 Comparison between Metropolitan Supply Availability and TWS Demand
' During an Average Year.................................................................................4-20
4.2-4 Current and Projected Water Supply and Demand — Normal Year .................4-21
4.2-5 Current and Projected Water Supply and Demand — Single Dry Year.............4-22
4.2-6 Current and Projected Water Supply and Demand — Multiple Dry Water
' Years 2006-2010............................................................................................4-23
4.2-7 Current and Projected Water Supply and Demand - Multiple Dry Water
Years2011-2015............................................................................................4-24
' 4.2-8 Current and Projected Water Supply and Demand — Multiple Dry Water
Years2016-2020............................................................................................4-25
4.2-9 Current and Projected Water Supply and Demand — Multiple Dry Water
Years2021-2025............................................................................................4-26
' 4.2-10 Current and Projected Water Supply and Demand — Multiple Dry Water
Years2026-2030............................................................................................4-27
4.4-1 Metropolitan Integrated Resources Plan Update Resources Status................4-30
5.1-1 Past, Current and Projected Water Use By Sector............................................5-1
5.1-2 Number of Water Service Connections By Sector.............................................5-2
6.3-1 DMM1 — Single Family and Multi-Family Surveys.............................................6-3
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6.3-2 DMM2 — TWS Residential Plumbing Retrofit Devices.......................................6-4
6.3-3 DMM3 — TWS System Water Audits. Leak Detection and Repair.....................6-5
6.3-4 DMM6 — High Efficiency Washing Machine Rebates ........................................6-8
6.3-5 DMM8 — MWDOC Water Education Program — Number of Students '
Reachedin Tustin.............................................................................................6-9
6.3-6 DMM9 — MWDOC "Save Water— Save a Buck!' Program..............................6-10 t
6.3-7 DMM9 — TWS CII Retrofit Program.................................................................6-11
6.3-8 DMM14 —TWS Residential ULFT Replacements...........................................6-14
7.2-1 Per Capita Health and Safety Water Quantity Calculations...............................7-9
7.3-1 Three Year Estimated Minimum Water Supply ...............................................7-10 '
8.3-1 Wastewater Discharged to the Ocean ..............................................................8-2
8.3-2 Wastewater Generated Within the City.............................................................8-3
FIGURES
Figure P _qe
Figure 1.1 TWS Service Area Boundaries.............................................................. 1-4
Figure 3.1 Metropolitan Water District Service Area and Filtration Plants Sites.... .3-6 ,
Figure 3.2 Water Service Area and Nitrate Plumes..............................................3-10
1
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2005 Urban Water Management Plan Acronyms and Abbreviations
Acronyms and Abbreviations
' AB Assembly Bill
ACT Urban Water Management Planning Act of 1983
AF Acre Feet
AFY Acre Feet per Year
' AWPF Advanced Water Purification Facilities
BEA Basin Equity Assessment
BMP Best Management Practices
BPP Basin Pumping Percentage
CALSIM California Water Allocation and Reservoir Operations Model
CCF Hundred Cubic Feet
' CDR Center for Demographic Research at California State University at
Fullerton
CEQA California Environmental Quality Act
CII Commercial, Industrial and Institutional
CIP Capital Improvement Program
CPTP Coastal Pumping Transfer Program
CRA Colorado River Aqueduct
CUWCC California Urban Water Conservation Council
CVP Central Valley Project
DBP Disinfection Byproducts
DHS California Department of Health Services
DMM Demand Management Measure
DRIP Desalination Research and Innovation Partnership
DWCV Desert Water Agency/Coachella Water District
' DWR Department of Water Resources
EOC Emergency Operations Center
EOCWD East Orange County Water District
EPA Environmental Protection Agency
ETo Evapotranspiration
GAP Green Acres Project
GPCD Gallons Per Capita Per Day
GPF Gallons Per Flush
GPM Gallons Per Minute
GWMP Groundwater Management Plan
GWRS Groundwater Replenishment System
HAA Haloacetic Acids
HECW High Efficiency Clothes Washer
IAWP Interim Agricultural Water Program
' IID Imperial Irrigation District
In Inches
IRP Integrated Resources Plan
IRWM Integrated Regional Water Management
LRP Local Resources Program
LTFP Long Term Facilities Plan
t M&I Municipal and Industrial
MAF Million Acre Feet
MCL Maximum Contaminant Level
1
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Acronyms and Abbreviations 2005 Urban Water Management Plan
MGD Million Gallons per Day
Mg/L Milligrams Per Liter ,
MOU Memorandum of Understanding
MPR Master Plan Report
MTBE Methyl Tertiary Butyl Ether ,
MWD Metropolitan Water District of Southern California
MWDOC Municipal Water District of Orange County
NDMA N-nitrosodimethylamine t
NPDES National Pollutant Discharge Elimination System
OC Orange County
OCSD Orange County Sanitation District ,
OCWA Orange County Water Association
OCWD Orange County Water District
PEIR Program Environmental Impact Report ,
PVID Palo Verde Irrigation District
QSA Quantification Settlement Agreement
RA Replenishment Assessment
RWQCB Regional Water Quality Control Board
SAWPA Santa Ana River Watershed Authority ,
SB Senate Bill
SBVMWD San Bernardino Valley Municipal Water District
SCAB South Coast Air Basin
SCADA Supervisory Control Data Acquisition System
SCCWRRS Southern California Comprehensive Water Reclamation and Reuse Study
SDWA Safe Drinking Water Act ,
SOCWRS South Orange County Water Reliability Study
SWP State Water Project
SWRCB State Water Resources Control Board ,
TAF Thousand Acre Feet
TDS Total Dissolved Solids
THM Trihalomethanes ,
TIN Total Inorganic Nitrogen
TWS Tustin Water Servicesss ,
ULFT Ultra Low Flush Toilet
USBR U.S. Bureau of Reclamation
UWMP Urban Water Management Plan ,
VCP Vitrified Clay Pipe
VOC Volatile Organic Compounds
WEROC Water Emergency Response Organization of Orange County '
WMP Water Master Plan
WOC Water Operations Center
WSDM Water Surplus and Drought Management
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2005 Urban Water Management Plan Section 1
SECTION 1
INTRODUCTION
1.1 PURPOSE AND UWMP SUMMARY
An Urban Water Management Plan (UWMP) is for the purpose of achieving the
conservation and efficient use of water supplies. The California Urban Water
Management Planning Act of 1983 (Act), as amended, requires urban water suppliers to
develop an UWMP every five years in the years ending in zero and five.
The Legislature declared that the waters of the state are a limited and renewable resource
subject to ever increasing demands; that the conservation and efficient use of urban water
supplies are of statewide concern; however, implementation of plans is best accomplished
at the local level; that conservation and efficient use of water shall be actively pursued to
protect both the people of the state and their water resources; that conservation and
efficient use of urban water supplies shall be a guiding criterion in public decisions; and
that urban water suppliers shall be required to develop water management plans to
achieve conservation and efficient use.
The City's 2005 UWMP has been prepared in compliance with the requirements of the
Act, as amended (Appendix A)I, and includes the following:
• Tustin Water Services Area
• Tustin Water Services Division and Facilities
• Water Sources and Supplies
• Water Quality Information
• Water Reliability Planning
• Water Use Provisions
• Water Demand Management Measures
• Water Shortage Contingency Plan
• Water Recycling
1.2 URBAN WATER MANAGEMENT PLAN UPDATE PREPARATION
The City's 2005 UWMP revises the 2000 UWMP prepared by the City of Tustin Water
Services (TWS) and incorporates changes enacted by legislation, including Senate Bill
(SB) 610 (2001), Assembly Bill (AB) 901 (2001), SB 672 (2001), SB 1348 (2002), SB
1384 (2002), SB 1518 (2002), AB 105 (2004), and SB 318 (2004). TWS has also
included requirements of SB 610 (2001) and SB 901 (2001) to integrate the latest urban
water management planning directives.
'California Water Code,Division 6,Part 2.6;§10610,et.seq.Established by Assembly Bill 797(1953).
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Section 1 2005 Urban Water Management Plan
The sections in this Plan correspond to the outline of the Act, specifically Article 2,
Contents of Plans, Sections 10631, 10632, and 10633. The sequence used for the required
information, however, differs slightly in order to present information in a manner
reflecting the unique characteristics of the City's water utility. The Department of Water
Resources (DWR) Review for Completeness Form has been completed, which identifies ,
the location of Act requirements in this Plan and is included as Appendix B. Since the
City must detail its effort in implementing water conservation demand management
measures (DMM), the DWR Review for DMM Completeness Form is also completed
and included in Appendix C.
The sections in this UWMP correspond to the outline of the Act, specifically Article 2, ,
Contents of Plans, Sections 10631, 10632, and 10633. The sequence used to present the
required information, however, differs slightly in order to present the material in a
manner reflecting the unique characteristics of TWS.
Plan Adoption
The 2005 UWMP was adopted by resolution of the Tustin City Council on April 3, 2006, ,
following a public hearing. The Plan was submitted to DWR within 30 days of Council
approval. Copies of the Notice of Public Hearing and the Resolution of Plan Adoption are ,
included in Appendix D. Copies of the Plan were made available to the public and to the
City of Santa Ana, the City of Orange, Irvine Ranch Water District, East Orange County
Water District, Orange County Water District, Municipal Water District of Orange
County, and Metropolitan Water District of Southern California during the public review
period.
The UWMP is intended to serve as a general, flexible, and open-ended document that
periodically can be updated to reflect changes in the water supply trends, conservation ,
and water use efficiency policies for Orange County. This Plan, along with the City's
Water Master Plan and other City planning documents, will be used by City staff to guide
the City's water use and management efforts through the year 2010, when the UWMP is '
again required to be updated.
Agency Coordination '
Development of this Plan was performed by TWS, in coordination with other ,
departments of the City.
In addition, coordination of information for development of the Plan occurred with the '
East Orange County Water District (EOCWD), the Municipal Water District of Orange
County (MWDOC), and the Metropolitan Water District of Southern California
(Metropolitan) for imported water 2, as well as the Orange County Water District ,
(OCWD), which manages the Orange County Groundwater Basin, and the Orange
Y TWS is a contractor of imported water from EOCWD,which subcontracts through MWDOC,which subsequently ,
is a member agency of Metropolitan.
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2005 Urban Water Management Plan Section 1
1 County Sanitation District (OCSD), which manages wastewater. All of the City's water
supply planning relates to the policies, rules, and regulations of these agencies. This
LTWMP details the specifics as they relate to TWS and its service area and will refer to
EOCWD, MWDOC, Metropolitan, OCWD and OCSD throughout. Appendix E lists the
numerous references used in the development of this Plan.
' Table 1.2-1
Tustin Water Services UWMP Development
Coordination and Public Involvement
Coordination and Public Involvement Actions
Sent/ Sent
Entities Participated Contacted Available Commented Notice Attended
in UWMP for To: Copy on Draft of Public
Preparation Assistance of Draft UWMP Public Hearing
UWMP Hearin
TWS X X X X X X
City Planning X X X X X
City Clerk X X X
City Attorney X X X X
EOCWD X X. X X
MWDOC X X X X
Metropolitan X X X
OCWD X X X
OCSD X X X
DWR X X X X
General X X
Public
1.3 TUSTIN WATER SERVICE AREA
Location
TWS provides potable water service to most of the incorporated area of the City and also
to unincorporated county areas north of the City. TWS is located in central east Orange
County as shown in Figure 1.1. TWS is bounded by the City of Orange to the north, the
City of Santa Ana to the west, the City of Irvine to the south, and unincorporated areas of
Orange County to the east. TWS is approximately 35 miles south of Los Angeles and 10
miles inland from the Pacific Ocean. TWS has an area of 8.4 square miles and an
elevation of about 50 feet above sea level. The topography of the City combines
generally flat areas with gradual rolling hills.
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Section 1 2005 Urban Water Management Plan
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FIGURE 1-1
Figure 1.1 Tustin Water Service Area Boundary ,
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Tustin Water Services
2005 Urban Water Management Plan Section 1
Climate Characteristics
TWS is located in an area known as the South Coast Air Basin (SCAB). The SCAB
climate is characterized by southern California's "Mediterranean" climate: a semi-arid
environment with mild winters, warn summers and moderate rainfall. The general region
lies in the semi-permanent high pressure zone of the eastern Pacific. As a result, the
climate is mild, tempered by cool sea breezes. The usually mild climatologically pattern
is interrupted infrequently by periods of extremely hot weather, winter stones, or Santa
Ana winds.
The City's average temperature ranges from 67 degrees Fahrenheit in January to 85
degrees Fahrenheit in August with an average annual temperature of 75 degrees. Annual
precipitation is typically approximately 13 inches, occurring mostly between November
and April. Evapotranspiration (ETo)3 in the region averages 49.7 inches annually.
Specific month-by-month climatologic data and the total or averages are presented in
Table 1.3-1.
Table 1.3-1
City of Tustin Average Temperatures and Rainfall"
Total
T I_
' Jan Feb Mar . Apr May Jun ': Jul Aug Sep Oct Nov Dec or
Avg -
Average
ETo 1.86 2.24 3.41 4.80 5.58 6.30 6.51 6.20 4.80 3.72 2.40 1.86 49.7
(inches)
Temp Max 67.0 68.1 69.4 72.9 75.4 79.0 84.0 85.5 84.7 79.7 73.9 68.2 75.6
40.5 42.4 44.3 47.7 52.2 55.8 59.2 59.5 57.0 51.9 44.4 40.7 49.6
Rainfall 2.53 2.73 2.21 1.01 0.26 0.07 0.01 0.08 0.27 0.36 1.32 1.99 12.82
(inches(
Demographics
TWS is predominantly residential with over 90 percent of water service connections
serving single-family or multi-family residences. With the exception of commercial
development, limited growth potential exists due to minimum availability of open space.
The population of the TWS service area was 62,131 in 2005.' The Center for
Demographic Research (CDR) at California State University Fullerton projects minimal
Evapotranspiration(ET)is the loss of water to the atmosphere by the combined processes of evaporation(from
soil and plant surfaces)and transpiration(from plant tissues).It is an indicator of how much water crops,lawn,
garden,and trees need for healthy growth and productivity.ET from a standardized grass species is commonly
denoted at ETo.
'ion-linel OC Almanac,h":Z/www.ocalmanac.comZWeather/we02.litm,Western Regional Climate Center,
Tustin-Irvine(Ranch). Data from 12/1/1927 through 6/30/2003.
'Population extracted from the City of Tustin 2000 UWMP
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change in the TWS population percentage and minimal change in land use over the next
20 years. Table 1.3-2 shows the population projections in five-year increments to the ,
year 2030.6 The TWS population is projected to remain stable (at approximately 62,100)
over this 25-year period.
Table 1.3-2 '
Current and Projected Population Projections' ,
2000.. 2095_- -2010 20145 } $ „2020 2025 2030
Service Area 62,131 62,100 62,100 62,100 62,100 62,100 62,100
Population
1
1.4 TUSTIN WATER SERVICES FACILITIES ,
Tustin Water Services Division
TWS provides domestic and fire protection water service to most of the incorporated area ,
of the City of Tustin and also to unincorporated areas north of the City. ,
TWS receives approximately 85 percent of its water from underlying groundwater in the
Lower Santa Ana Groundwater Basin. The remaining 15 percent is imported water ,
purchased from EOCWD. TWS has seven untreated or "clear" groundwater wells that
pump directly into the distribution system and two treatment facilities that treat
groundwater from five additional wells.
The groundwater basin is managed by OCWD, who sets the percentage of groundwater 1
that an agency or city can pump based on their total potable water demand. This is
referred to as the basin pumping percentage (BPP). For 2005/06, the BPP for TWS is 64
percent.8 Production in excess of 64 percent of applicable demands is assessed under the
basin equity assessment (BEA) with a production penalty, raising the cost of this supply
to exceed imported water rates. However, basin groundwater produced through Tustin's '
treatment facilities is exempt from the BEA since the treatment plants remove and use
low quality water from the Groundwater Basin, which would otherwise be unusable.
This activity, in turn, benefits all OCWD groundwater member agencies. '
Imported water is purchased from Metropolitan through MWDOC and EOCWD.
Imported potable water delivered to EOCWD comes from the Robert B. Diemer ,
'The population of the TWS service area(62,100)is not expected to increase over the next 25 years. The CDR projects a '
total City population of about 74,000 in 2030;however,the additional 11;900 people(in excess of the TWS Service arca
population)are expected to reside in areas of the City served by the Irvine Ranch Water District. ,
' Center for Demographic Research,California State University Fullerton,Orange County.
'The BPP was changed by OCWD in late April 2003 and effective July 2003 to 66 percent.However,OCWD again
changed the BPP to 64 percent ht June 2005. The BPP is projected to increase to 69%for FY 2006/07. ,
Final Draft 3/7/06 1-6
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2005 Urban Water Management Plan Section 1
Filtration Plant located north of Yorba Linda. Typically, the Diemer Filtration Plant.
' receives a blend of Colorado River water from Lake Mathews through the Metropolitan
Lower Feeder and State Water Project (SWP) water through the Yorba Linda Feeder.
' Water System Pressure Zones and Facilities
Elevations in the TWS service area range from 60 feet above mean sea level at Warner
and Redhill to 435 feet in the Lemon Heights area. The water system is divided into three
pressure zones. The average ground elevations for Zones 1, 2, and 3 are 210 feet, 280
feet, and 400 feet above mean sea level, respectively.
TWS delivers water supplies through 170 miles of 1.5-inch to 20-inch water mains and
three booster stations. TWS pumps its groundwater from 12 wells, inclusive of five wells
that undergo nitrate and total dissolved solids (TDS) removal through the Main Street
Plant and the 17t" Street Desalter Treatment Plant.9 TWS has approximately 11.83
million gallons (MG) of storage capacity in its six existing reservoirs and three booster
stations.
' v City of'rustin Water Master Plan,p.Executive Summary,2000
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SECTION 2
WATER SOURCES AND SUPPLIES
2.1 WATER SOURCES
' TWS works together with three regional water agencies to ensure a safe and high quality
water supply, which will continue to serve the community in periods of drought and
shortage. The agencies who work collaboratively to provide these services are the
EOCWD (the local imported water wholesaler), MWDOC (the Orange County imported
water wholesaler), and Metropolitan for imported water; and OCWD for groundwater.
iDuring the 2004/05 Fiscal Year, the City received approximately 48 percent of its water
supply from local groundwater, and 52 percent from imported water via Metropolitan.
' The portion of the City's supply coming from groundwater was less than the 66 percent
allowable BPP10 set by OCWD because of in-lieu purchases made by Tustin. In-lieu
' water is made available for purchase when Metropolitan has surplus water. When
participating in the program, the City purchases the surplus water from Metropolitan
through EOCWD and MWDOC "in-lieu" of pumping groundwater, thereby resulting in
the pumping of less water than the BPP would otherwise allow.
East Orange County Water District (EOCWD)
In 1961, EOCWD was formed to provide supplemental treated water to the Tustin
' Waterworks (predecessor water agency of TWS) and other water purveyors operating in
the general vicinity of Tustin. Since that time, the City has purchased significant amounts
of imported water from EOCWD. However, the magnitude of those purchases is
anticipated to decline in future years as the City constructs new wells to serve its
constituents.
Municipal Water District of Orange County(MWOOC)
In 1951, MWDOC was formed to provide supplemental water to many purveyors within
Orange County who were not Metropolitan member agencies. At the time, the
communities surrounding the Lower Santa Ana Groundwater Basin realized that the local
underground supply might not be sufficient to meet future demands of the area.
MWDOC was formed for the purpose of contracting with Metropolitan to acquire
supplemental imported water supplies from northern California and the Colorado River
for use within the Orange County area. MWDOC is Metropolitan's second largest
wholesale member agency. MWDOC represents 30 member agencies, including 14
special districts, 14 city water departments, one private water company and one mutual
10 OCWD sets the BPP annually.For FY 2004/05,it was 66 percent.For the current FY 20005/06,it is set at 64
percent.
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water company. MWDOC provides imported water to all of Orange County except for
the cities of Anaheim, Fullerton and Santa Ana I
Metropolitan Water District of Southern California (Metropolitan)
Metropolitan was formed in 1928 by special legislative act. At that time, Orange County ,
was mostly an agriculturally based economy with the cities of Santa Ana, Anaheim, and '
Fullerton as the primary centers of urban development. Although other cities and
residential communities existed at that time, these three cities joined ten others located in
southern California, to form Metropolitan. Collectively, these charter members '
recognized the limited water supplies available within the region, and realized that
continued prosperity and economic development of Southern California depended upon ,
the acquisition and careful management of an adequate supplemental water supply. This
foresight made the continued development of southern California and Orange County
possible. ,
Metropolitan acquires water from northern California via the State Water Project and
from the Colorado River to supply water to most of southern California. As a wholesaler, ,
Metropolitan has no retail customers, and distributes treated and untreated water directly
to its member agencies, including MWDOC, which in tum wholesales to EOCWD.
Orange County Water District (OCWD)
In 1933, OCWD was formed by special legislative act to protect and manage the County's
vast, natural, underground water supply with the best available technology and to defend '
its water rights to the Lower Santa Ana Groundwater Basin (Basin). As part of its original
formation, OCWD was established by a special act (Act), of the State of California
Legislature. This legislation is found in the State of California Statutes, Water — ,
Uncodified Acts, Act 5683, as amended.12 The Basin is managed by OCWD under the
Act, which functions as a statutorily-imposed physical solution. Section 77 of the Act
states that, `nothing in this act contained shall be so construed as to affect or impair the
vested right of any person, association or corporation to the use of water.13 According to
the Act, the TWS has the right to construct and operate groundwater-producing facilities
in the Basin. The Act also empowers OCWD to impose replenishment assessments and
basin equity assessments on production and to require registration of water-producing
facilities and the filing of certain reports; however, OCWD is expressly prohibited from '
limiting extraction unless a producer agrees.14
The Basin is managed by OCWD for the benefit of municipal, agricultural and private ,
groundwater producers. OCWD has 23 major producers extracting water from the Basin
MWDOC 2005 Regional Urban Water Management Plan,Section 1,Draft.
Orange County Water District Act.
"Orange County Water District Act,Section 77.
"Orange County Water District Act,Sections 23 and 31.5.
1
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2005 Urban Water Management Plan Section 2
serving a population of approximately 2.8 million.15 Carefully managed by OCWD in
lcollaboration with the other water and wastewater agencies, the growing population can
be assured of a secure water supply from the groundwater source. Processes such as
groundwater recharge of the Santa Ana River, recycling of wastewater, conservation and
water use efficiency, and creative water purchases have aided in replenishing the
Groundwater Basin to desired levels to meet required demands. The OCWD is currently
pursuing planning and engineering studies as part of its Long Term Facilities Plan aimed
at optimizing use of the Basin by all producers.
2.2 WATER SUPPLY
TWS currently has the ability to received 64 percent of its water supply from
groundwater wells accessing the Basin and 36 percent from Metropolitan through
EOCWD. These percentages are established through OCWD's allowable BPP. The BPP
is typically set by OCWD on an annual basis. However, OCWD does have the option of
revising the BPP as needed. The BPP is projected to increase to 69% for FY 2006/07
according to OCWD.
Actual percentages vary somewhat on an annual basis depending on the extent in-lieu
delivery programs are implemented. TWS annually participates in the in-lieu program,
which allows the City to purchase more imported water. However, TWS is in the process
of developing two new wells with plans for two more wells to maximize groundwater
production in the next five years.
Current and projected water supplies from imported water and groundwater are shown in
Table 2.2-1 and described in subsequent sections.
Table 2.2-1
Tustin Water Services
Current and Planned Water Supplies
(AFY)
Water Supply Sources 2005 2010 2015 2020 2025 2030
EOCWD — Import 6,722 650 630 670 630 590
' Treated Groundwater 2,330 4,000 4,000 4,000 4,000 4,000
Production
Clear Groundwater 2,398 8,220 8,220 8,220 8,220 8,220
Production
Total Water Supply 11,450 12,870 12,850 12,890 12,850 12,810
Source: 2005 data from City records and has been reduced to adjust for brine discharge (303 AF) and
unallocated losses(1,459 AF); future projections are from Table 4.2-4 of this UWMP
's Orange County Facts and Figures. Center for Demographic Research. Available:
http://www.ftillerton.edu/cdr/countvfacts.1df. Note: Population served by OCWD is different than MWDOC
' as it also serves the cities of Santa Ana,Fullerton,and Anaheim.June 2002.
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Imported Water
TWS purchases treated imported water from EOCWD, which is a member agency of
MWDOC, which in turn is a member agency of Metropolitan. Imported water purchases
have decreased significantly in recent years as a result of groundwater system treatment ,
and production improvements. Metropolitan imports raw water from northern California
through the State Water Project (SWP) and from the Colorado River through the
Colorado River Aqueduct (CRA), then treats the majority of water to potable standards at
filtration plants located in southern California.
Imported potable water delivered to EOCWD comes from a single source, the Robert B. ,
Diemer Filtration Plant (Diemer Plant), located north of Yorba Linda. Typically, Diemer
Plant receives a blend of Colorado River water from Lake Mathews through the
Metropolitan Lower Feeder and SWP water through the Yorba Linda Feeder. Currently,
the blend is approximately a 50/50 split between the two sources.
The TWS maintains three imported water connections to the Metropolitan system. These ,
connections and the pressure zones they serve are shown in Table 2.2-2.
Table 2.2-2
Imported Water Connections
n—, Zone`
Supply
.,
OC-43 1 '
OC-48 1 & 2
OC-70 2 & 3 ,
Imported Water is purchased from EOCWD through each of these connections. Water
purchased through OC-43 is distributed directly into the TWS system, while water"
purchased through the other two connections is also distributed to EOCWD's four other
retail customers (City of Orange, Golden State Water Company, Orange Park Acres
Mutual Water Company and the East Orange County Water District Retail Zone).
EOCWD owns a total combined capacity of 25.57cubic feet per second (efs) from these ,
three connections. EOCWD's capacity in these three connections is provided on an "as-
needed" basis to each of the five retailers, including TWS, with no guaranteed allotment
to any agency. '
TWS participates, in coordination with EOCWD, MWDOC and the OCWD, in
Metropolitan's In-lieu Program. OCWD, MWDOC, and Metropolitan have developed a
successful and efficient In-lieu Program to increase storage in the Basin and anticipate
working together on future programs. One such future program is the proposed Surplus ,
Water Program.
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The Surplus Water Program will allow Metropolitan to make direct deliveries to the TWS
Idistribution system in lieu of producing water from the Basin. This in-lieu program
indirectly replenishes the Basin by avoiding pumping. In the in-lieu program, OCWD
requests TWS to halt pumping from specified wells. TWS then takes replacement water
through its imported water connections, which is purchased by OCWD from
Metropolitan (through MWDOC). OCWD purchases the water at a reduced rate, and then
' bills TWS the amount it would have had to pay for energy and the replenishment
assessment (RA) if it had produced the water from its wells. The deferred local
production results in water being left in local storage for future use.
Reservoirs
' Storage is required to balance variations in demand (operational or regulatory storage), to
provide water for fighting fire (fire storage), and to provide water when normal supplies
' are reduced or unavailable due to unusual circumstances (emergency storage). The
existing storage system consists of five reservoirs with a combined storage capacity of
approximately 7.83 million gallons (MG) as shown in Table 2.2-3. A sixth reservoir,
Rawlings Reservoir, has a capacity of 4.2 MG; however that storage facility was recently
taken out of servicer. TWS is currently in the process of designing a replacement to the
existing Rawlings Reservoir, which will increase overall capacity to approximately 13.83
MG.
' Table 2.2-3
Tustin Water Services
Existing Reservoir Storage Capacities
Res'ervolr DFrth.•_ Capacity
~ .. _
( ) _� ( )
Main Street 42 2.21 .
Newport Avenue 19.5 1.15
Foothill 24.0 2.91
Simon Ranch 26.0 1.40
John Lyttle 39.0 0.17
Total 7.83
Groundwater Supply
Lower Santa Ana Groundwater Basin
jThe Lower Santa Ana Groundwater Basin underlies the north half of Orange County
beneath broad lowlands. The Basin covers an area of approximately 350 square miles,
Rawlings Reservoir was removed brom operation since the 2000 UWMP was completed. It will be replaced by two new 3.0
MG reservoirs projected to be on-line by November 2008.
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bordered by the Coyote and Chino Hills to the north, the Santa Ana Mountains to the
northeast, the Pacific Ocean to the southwest, and terminates at the Orange County line to
the northwest, where its aquifer systems continue into the Central Basin of Los Angeles
County. The aquifers comprising this Basin extend over 2,000 feet deep and form a
complex series of interconnected sand and gravel deposits. Groundwater supplies
currently meet approximately 64 percent of the water supply demand for all of Orange
County that overlies the Basin. This amount can be adjusted as needed based on ,
Groundwater Basin hydrologic conditions, but is typically set on an annual basis.
During the water year July 2003 to June 2004, total basin production for all agencies was '
approximately 284,621 acre-feet (AF).17 The Groundwater Basin generally operates as a
reservoir in which the net amount of water stored is increased in wet years to allow for '
managed overdrafts in dry years. The Basin is recharged primarily from local rainfall
(greater in wet years), base flow from the Santa Ana River (much of which is actually
recycled wastewater from treatment plants in Riverside and San Bernardino Counties), 1
imported water percolated into the Basin, and recycled wastewater directly recharged into
the Basin. The production capability of the Basin is being increased as a result of a
variety of specific management initiatives including increased wastewater reclamation
and the blending of lower quality water with potable water for public distribution.
The Basin is not adjudicated and based on DWR's official departmental bulletins,
California's Groundwater Bulletin No. 118 Updated 2003 and Bulletin No. 160, The
California Water Plan Update 2005, the Basin is not specifically identified as being in an
overdraft condition. The California Water Plan Update, however, does state that
groundwater overdraft is a challenge for the South Coast Hydrologic Region, which
includes the Orange County Groundwater Basin. The Basin is considered in an overdraft
condition by OCWD; however, the groundwater levels and amount of overdraft fluctuate
over time. OCWD continually monitors groundwater level trends and has collected data ,
since 1962. OCWD's Groundwater ManagementPlan summarizes the accumulated
overdraft and water level elevations within the Basin. OCWD estimates that the
accumulated overdraft in June 2004 was approximately 400,000 AF." '
Based on OCWD's 2004 Groundwater Management Plan, the target accumulated '
overdraft is 200,000 AF. An accumulated overdraft condition minimizes the localized
high groundwater levels and increases ability to recharge storm events from the Santa
Ana River. OCWD estimates that the Groundwater Basin can safely be operated on a ,
short-term emergency basis with a maximum accumulated overdraft of approximately
500,000 AF; however, 400,000 AF is preferred. With an accumulated overdraft of
200,000 AF, the Basin is considered 99.5 percent full with 40 million acre feet (MAF) of
groundwater in storage.
17 Orange County Water District, Draft 2003-2004 Engineer's Report on Groundwater conditions, Water Supply and '
Basin Utilization in the Orange Comity Water District,February 2005
18 Orange County Water District,Draft 2003-2004 Engineer's Report on Groundwater conditions, Water Supply and
Basin Utilization in the Orange County Water District,February 2005
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In an effort to eliminate long-term overdraft conditions, OCWD developed a
1 comprehensive computer-based groundwater flow model to study and better understand
the Basin's reaction to pumping and recharge. OCWD has also implemented a
monitoring program to track dynamic conditions including groundwater production,
storage, elevations, and quality. Components of this monitoring program include the
request for the TWS to provide its groundwater production to OCWD on a monthly basis,
yearly measurement of groundwater levels, water quality monitoring, and prevention of
sea water intrusion. In this regard, TWS is currently working with OCWD to develop
several monitoring well sites at two of its abandoned well locations.
Basin Pumping Percentage (BPP)
One of the methods OCWD uses to manage the amount of production from the Basin is
the establishment of a BPP. OCWD recommends a BPP each water year which is
calculated by dividing a producer's groundwater production by their total water demands.
The BPP is based on groundwater conditions, availability of imported water supplies, and
Basin management objectives. The BPP is also a major factor in determining the cost of
groundwater production from the Basin for that year.
While the BPP has been as high as 75 percent in recent years, the BPP was set at 66
ipercent for 2004-2005. The BPP has been set at 64 percent for the water year 2005-2006
and is anticipated to increase to 69 percent in FY 2006/2007. Producers may pump above
' the BPP to 100 percent of their needs by paying the Basin Equity Assessment (BEA). The
BEA is the additional fee paid on any water pumped above the BPP, making the cost of
that water equal or greater to the cost of imported water. Such flexibility in producing
■ over the BPP guarantees TWS and other water utilities in Orange County the ability to
■ provide water to their customers during periods of varying water availability.
' When Metropolitan has an abundance of water, they may choose to activate their In-Lieu
Program, where imported water is purchased in-lieu of pumping groundwater. This is a
' special program supported by OCWD, MWDOC and Metropolitan, which allows some
agencies to pump above the BPP without penalty of the BEA.
Recharge Facilities
Another method for controlling overdraft is through recharge management programs.
The Basin is recharged by multiple sources including natural and artificial sources.
Natural recharge occurs when groundwater producers use surface water in-lieu of
groundwater. The reduction in pumping naturally recharges the Basin. Another source of
' natural recharge is the result of precipitation and OCWD estimates that approximately
60,000 AFY recharged to the Basin.
IArtificial recharge occurs through developed percolation ponds (approximately 1,000
acres) and also via injection through the Talbert and Alamitos Barriers. The four
groundwater spreading systems throughout OCWD's service area and their respective
percolations rates are summarized in Table 2.2-4.
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Table 2.2-4
Orange County Groundwater Basin - Groundwater Spreading Systems i
System ; Area Storage Capacity Percolation,Rate
(cfs)
Main River System 245 480 87-1 15
Off-River System 126 394 15-40 i
Deep Basin System 280 8,484 89-300
Burris Pit/Santiago System 373 17,500 106-210 i
These percolation systems can recharge Santa Ana River baseflow and storm flows.
OCWD estimates that approximately 155,000 AF of baseflow and 60,000 AF of storm i
flows are recharged each year on average. OCWD also imports between 35,000 and
60,000 AF of replenislunent water to be used for recharging the Basin. i
OCWD also recharges the Basin by injecting water to prevent seawater intrusion. The
seawater intrusion barriers include the Talbert and Alamitos Barriers. The Talbert Barrier i
has 26 injection wells and injects 12 MGD into the Basin. Over 95 percent of the water
injected flows inland and is therefore considered replenishment water. The Alamitos i
Barrier injects approximately 5,000 AFY of which 50 percent stays within the Basin for
replenishment.
The estimated average annual recharge of the Basin based on the information provided i
above is 328,400 AF to 353,400 AF. The range is due to the amount of imported water
purchased from Metropolitan each year. The amount of water available for recharge will i
vary from year to year.
TWS Wells i
Within the TWS service area, groundwater for potable use is produced from 12 operating i
wells. The TWS categorizes the wells as either clear or treated groundwater. Seven of the
wells are categorized as clear groundwater wells even though several wells require
blending with either imported water or groundwater from another well to meet the nitrate i
maximum contaminant level (MCL). Blending is not considered a treatment process by
OCWD and blended groundwater is not exempt from the BEA.
TWS also treats groundwater from five wells high in total dissolved solids (TDS) and/or i
nitrates at the Main Street Plant and 17th Street Desalter Treatment Plant. Groundwater i
produced through these treatment plants removes TDS and nitrates from the Basin. As
such, these wells are exempt from the BEA and are not included in BPP calculations. The
specifics for the TWS's wells are shown in Table 2.2-5. i
i
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Table 2.2-5
Tustin Water Service Active and Planned Wells
y
G Well Drilled
cZui
Columbus-Tustin 1985
Beneta 1977
Livingston NA
Vandenburg 1993
Pasadena Avenue Future
Tustin Avenue 1952
Yorba Street NA
Prospect 1955
Pankey NA
Walnut Avenue 1930
' Main St. No. 2 NA
Main St. No. 3 1972
Main St. No. 4 1999
' 17 St. No. 1 NA
17 St. No. 2 1972
17` St. No. 4 2003
Newport Well No. 3 1926
Table 2.2-6 summarizes the amount of groundwater pumped by the TWS for the last five
' years.
1
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Table 2.2-6
Groundwater Production By Well ,
(AF)
Clear Groundwater 2000"" '-,,:2001'_I. 2002 ;; 2003asc
2004 2005 _ ,
Columbus-Tustin 1,656 1,361 1,043 915 693 535
Beneta 737 735 485 240 281 380 ,
Livingston 0 0 0 0 0 0
Vandenburg 2,111 1,937 2,246 1,451 790 752
Tustin Avenue 732 645 358 660 438 304 ,
Yorba Street 653 583 593 12 186 212
Prospect 825 751 881 489 1 238 331 '
Pankey 0 0 0 0 0 0
Walnut Avenue 979 993 953 593 283 174
Subtotal 7,693 7,005 6,559 4,360 2,909 2,688 '
Treated Groundwater 2000 2001 ` :h 2002 2003 2004 , 12005
4P el
Main St. No. 2 ® 311 y0% 363 0 0 0
Main St. No. 3 293 558 798 542 621 420 ,
Main St. No. 4 0 518 0 868 1,448 1,079
17 Ih St. No. 1 826 1,420 1,080 257 0 0
17` St. No. 2 506 540 304 54 0 0 '
Newport Well No. 3 1,130 100 648 400 590 1
17` Street No. 4 0 0 0 1,754 2,503 1,267 ,
Subtotal 3,066 3,136 3,193 3,875 5,162 2,767
Total 10,759 10,141 9,752 8,235 8,071 5,455
Table 2.2-7 presents the total amount of water that is projected to be pumped by TWS in '
the future.
Table 2.2-7 '
Amount of Groundwater Projected to be Pumped
(AFY)
;z
Santa'Ana
2010 2015: ' 2020 2025 2030
GrouhdwateiBasin _ _ , •
Clear Groundwater 8,220 8,220 8,220 8,220 8,220
Production
Treated Groundwater 4,000 4,000 4,000 4,000 4,000
Production ,
Percent of Total 95% 95% 95% 95% 95%
Supply ,
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SECTION 3
WATER QUALITY
3.1 WATER QUALITY OF EXISTING SOURCES
As required by the Safe Drinking Water Act (reauthorized in 1996), the TWS provides
annual water quality reports to its customers, also known as Consumer Confidence
Reports. This mandate is governed by the Federal Environmental Protection Agency
(EPA) and the California Department of Health Services (DHS) to inform customers
about their drinking water quality.
TWS, OCWD, and Metropolitan vigilantly safeguard their water supplies through
continuous testing, monitoring, and related processes for water quality. In some cases,
' TWS, Metropolitan, and OCWD exceed DHS requirements and test for other
contaminants that have been known for health risks. In accordance with the Safe
Drinking Water Act, the TWS monitors a number of regulated and unregulated
compounds in its water supply. The water delivered to the TWS meets the standards
required by the state and federal regulatory agencies.19
IMPORTED WATER
The TWS receives imported water through EOCWD and MWDOC from Metropolitan,
which receives raw water from northern California through the SWP and the Colorado
River Aqueduct. Metropolitan water is treated in accordance with state and federal
potable standards at filtration plants located throughout southern California. The TWS
receives its treated imported water from the Robert B. Diemer Filtration Plant located in
Yorba Linda, California. Typically, the Diemer Filtration Plant receives a 50/50 blend of
SWP and Colorado River water.20
' Metropolitan tests and treats its water for microbial, organic, inorganic, and radioactive
contaminants as well as pesticides and herbicides. Protection of Metropolitan's water
system continues to be a top priority. In coordination with its 26 member public
agencies, Metropolitan added new security measures in 2001 and continues to upgrade
and refine procedures. Changes have included an increase in the number of water quality
' tests conducted each year (more than 300,000) as well as contingency plans that
coordinate with the Homeland Security Office's multicolored tiered risk alert system.21
Metropolitan also has one of the most advanced laboratories in the country where water
quality staff performs tests, collects data, reviews results, prepares reports, and researches
other treatment technologies. Although not required, Metropolitan monitors and samples
elements that are not regulated but have captured scientific and/or public interest.
'v City of Tustin,2005 Water Quality Report.
R0 City of Tustin. Water Master Plan,p.3-17 through 3-19.2000.
' "Metropolitan's website,www.mwdh2o.com/mwdh2o/pages/yoitrwater/2005_report/protect_02.html
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Metropolitan has tested for chemicals such as perchlorate, methyl tertiary butyl ether
(MTBE), and chromium VI among others. '
In Metropolitan's Integrated Resources Plan (IRP) Update, water quality was identified
as a possible risk to Metropolitan's future water supply reliability. Existing supplies ,
could be threatened in the future because of contamination, more stringent water quality
regulations, or the discovery of an unknown contaminant. Water quality of imported ,
water could directly impact the amount of water supplies available to the TWS.
Metropolitan's UWMP Update included the following examples:
• If a groundwater basin becomes contaminated and cannot be used, more water
will be required from other sources
• Imported water from the Colorado River must be blended (mixed) with lower '
salinity water from the SWP. Higher salinity levels in the Colorado River would
increase the proportion of SWP supplies required. ,
• High total dissolved solids in water supplies leads to high TDS in wastewater,
which increases the cost of recycled water
• If diminished water quality causes a need for membrane treatment, the process '
typically results in losses of up to 15 percent of the water processed
• Degradation of imported water supply quality could limit the use of local
groundwater basins for storage ,
• Changes in drinking water quality standards such as arsenic, radon, or perchlorate
could increase'demand on imported water supplies ,
Because of the concerns identified above, Metropolitan has identified those water quality
issues that are of greatest concern and identified necessary water management strategies ,
to minimize the impact on water supplies. Water quality concerns with Metropolitan's
water supplies and the approaches taken to ensure acceptable water quality are discussed ,
in the following sections.
Salinity ,
Water from the Colorado River Aqueduct has the highest level of salinity of all
Metropolitan's sources of supply, averaging 650 mg/L during normal water years.22
Several actions have been taken on the state and federal level to control the salinity
conditions at the river such as the Colorado River Basin Salinity Control Act in 1974 and
formation of the Colorado River Basin Salinity Control Forum. In 1975, water quality
standards and a plan for controlling salinity were approved by the Environmental
Protection Agency. '
In contrast, water from the SWP is significantly lower in total dissolved solids, averaging
250 mg/L. Because of the lower salinity, Metropolitan blends SWP water with Colorado ,
River water to reduce the salinity in the water delivered to its customers. Metropolitan's
Board of Directors has adopted a salinity objective of 500 mg/L for blended imported
water as defined in Metropolitan's Salinity Management Action Plan. Metropolitan '
Metropolitan Water District of Southern California, Regional UWMP,September 2005 Draft ,
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estimates that the objective can be met in seven out of ten years. In the other three years,
hydrologic conditions would result in increased salinity and reduced volume of SWP
supplies.
' In an effort to address concerns over salinity, Metropolitan secured State of California
Proposition 13 funding for two water quality programs:
' 1) Water Quality Exchange Partnership — the funding is being used to develop
new infrastructure to optimize water management capabilities between the
agricultural users of the eastern San Joaquin Valley and urban users of
southern California. Installing infrastructure will provide opportunities for
' Metropolitan to exchange SWP water for higher quality water.
2) The Desalination Research and Innovation Partnership (DRIP) — the funding
is being used to develop cost-effective advanced water treatment technologies
for the desalination of Colorado River water, brackish groundwater, municipal
wastewater, and agricultural drainage water.
Perchlorate in Colorado River
Perchlorate is a contaminant of concern to Metropolitan and is known to have adverse
effects on the human thyroid. Perchlorate has been detected at low levels in the Colorado
River water supply. Perchlorate is difficult to remove from water supplies with
conventional water treatment. Successful, but expensive treatment technologies include
nanofiltration, reverse osmosis, biological treatment, and fluidized bed bioreactor
treatment. Metropolitan continues to monitor perchlorate contamination of the Colorado
River as well as research various treatment options. In 2002 Metropolitan adopted a
Perchlorate Action Plan which defined the following nine objectives:
i1) expand monitoring and reporting programs
2) assess the impact of perchlorate on local groundwater supplies
3) continue tracking health effects studies
4) continue tracking remediation efforts in the Las Vegas Wash
5) initiate modeling of perchlorate levels in the Colorado River
6) investigate the need for additional resource management strategies
7) pursue legislative and regulatory options for cleanup activities and regulatory
standards
' 8) include information on perchlorate into outreach activities
9) provide periodic updates to Metropolitan's board and member agencies
Disinfection by-products formed by disinfectants reacting with bromide
and total organic carbon in SWP water
' SWP water supplies contain levels of total organic carbon and bromide that are a concern
to Metropolitan in maintaining safe drinking water supplies. When water is disinfected at
treatment plants certain chemical reactions can occur with these impurities that can form
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disinfection byproducts (DBP). DBPs in turn can result in the formation of
trihalomethanes (THMs), haloacetic acids (HAAs) and other DPBs. THMs and HAAs ,
have been found to cause cancer in laboratory animals. Inherent in any through-Delta
water movement is the high organic and bromide loading imposed on the water from
agricultural runoff and salt water intrusion. This poses significant treatment challenges to ,
end users, like Metropolitan. To avoid problems with DBPs and the formation of TI-IMs,
it is imperative that the quality of SWP water delivered to Metropolitan be maintained at
the highest levels possible.
To control the total organic carbon and bromide concentrations in Metropolitan's water ,
supply, SWP water is blended with Colorado River water. The blending of these two
water sources benefits consumers in two ways: reduction in disinfection byproducts and ,
reduction in salinity (as discussed earlier). With recent drought conditions on the
Colorado River, water supplies have been reduced which impacts the blending operations
at the various filtration plants. As a result, Metropolitan's Board of Directors authorized ,
the use of ozone as the primary disinfectant at all five Metropolitan treatment plants in
July 2003 (refer to Figure 3-1 from Metropolitan's 2005 Regional Urban Water
Management Plan for a map of MWD's service area and filtration plant sites). '
Previously, only the Henry J Mills and Jensen Filtration Plants had been approved for this
treatment. These two plants were chosen for the use of ozone to meet new disinfection
byproducts regulations. Metropolitan's Board of Directors plans to install ozonation at
the remaining three plants by 2009, including the Diemer filtration plant.
Methyl Tertiary Butyl Ether (MTBE) in Groundwater and Local Surface ,
Reservoirs
The California Department of Health Services has adopted a primary maximum
contaminant level (MCL) of 13 ug/L for MTBE. MTBE is an oxygenate found in
gasoline. Metropolitan monitors MTBE levels at Diamond Valley Lake and Lake ,
Skinner. The reservoirs also have boat requirements such as MTBE-free fuel to aid in the
protection of imported water supplies. MTBE concentrations have been below the MCL. ,
Uranium
Uranium is a contaminant of concern to Metropolitan in the water from the Colorado
River. Significant deposits of uranium mine tailings have been located approximately 600
feet from the river at Moab, Utah. Rainfall seeps through the tailings and contaminates ,
the local groundwater which flows to the river. In 2003, an interim action system was
implemented that intercepts some of the contaminated groundwater prior to reaching the
river. The U.S. Department of Energy is preparing an Environmental Impact Statement
that will evaluate the possibility of moving the pile, capping it in place, and other
alternatives. Uranium levels at Metropolitan's intake range from 1 to 5 pCi/L whereas the ,
California drinking water standard is 20 pCi/L.zs
"The Metropolitan Water District of Southern California,Regional Urban Water Management Plan,2005 ,
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N-nitrosodimethylamine (NDMA)
NDMA is an emerging contaminant that may have an impact on regional water supplies.
Although Metropolitan's water supplies are non-detect for NDMA, there is a concern that
chlorine and monochloramine can react with organic nitrogen precursors to form NDMA.
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Figure 3-1 '
Metropolitan Water District Service Area and Filtration Plant Sites
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Hexavalent Chromium (Chromium VI)
Currently, the MCL for total chromium is 0.05 mg/L, which includes Chromium VI.
DHS is to set a MCL for Chromium VI, however, the Office of Health Hazard
Assessment must first establish a public health goal. Metropolitan samples for Chromium
VI and monitors levels within the Colorado River because of Chromium VI detection in
groundwater near the river. The plume of Chromium VI has been detected in recently
installed wells that are located less than 60 feet west of the Colorado River near Topock,
Arizona. In February 2005, Chromium VI was detected at a concentration of 354 parts
per billion (ug/L).24 Metropolitan has been involved in a Technical Work Group
promulgated by both the U.S. Environmental Protection Agency and the State Regional
Water Quality Control Board that is reviewing monitoring results and remediation plans
for groundwater contaminated with hexavalent chromium.
' Water Quality Programs
Metropolitan supports and is involved in many programs that address water quality
concerns related to both the SWP and Colorado River supplies. Some of the programs
and activities include:
• CALFED Program — This program coordinates several SWP water feasibility
studies and projects. These include:
1. A feasibility study on water quality improvement in the California Aqueduct.
2. The conclusion of feasibility studies and demonstration projects under the
Southern California-San Joaquin Regional Water Quality Exchange Project.25
This exchange project was discussed earlier as a mean to convey higher
quality water to Metropolitan.
3. DWR's Municipal Water Quality Investigations Program and the Sacramento
River Watershed Program. Both programs address water quality problems in
the Bay-Delta and Sacramento River watershed.
• Delta Improvement Package — Metropolitan in conjunction with DWR and US
Geologic Survey have completed modeling efforts of the Delta to determine if
levee modifications at Franks Tract would reduce ocean salinity concentrations in
water exported from the Delta. Currently, tidal flows trap high saline water in the
track. By constructing levee breach openings and flow control structures, it is
believed saline intrusion can be reduced. This would significantly reduce total
dissolved solids and bromide concentrations in water from the Delta.
• Source Water Protection—In 2001, Metropolitan completed a Watershed Sanitary
Survey as required by DHS to examine possible sources of drinking water
contamination and identify mitigation measures that can be taken to protect the
water at the source. DHS requires the survey to be completed every five years.
Metropolitan also completed a Source Water Assessment (December 2002) to
as Arizona Department of Health Services,Topock Groundwater Study Evaluation of Chromium in Groundwater
Wells,September 7,2005.
8 Metropolitan Water District of Southern California,Regional U WMP,September 2005 Draft
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evaluate the vulnerability of water sources to contamination. Water from the
Colorado River is considered to be most vulnerable to contamination by '
recreation, urban/storm water runoff, increasing urbanization in the watershed,
wastewater and past industrial practices. Water supplies from SWP are most
vulnerable to urban/storm-water runoff, wildlife, agriculture, recreation, and ,
wastewater.26
GROUNDWATER ,
OCWD manages the Lower Santa Ana River Groundwater Basin (Basin) and conducts a ,
comprehensive water quality monitoring program. OCWD collects over 13,500
groundwater samples each year from over 800 wells. The water quality data collected ,
from these wells is used to assess ambient conditions of the Basin, monitor the effects of
extraction, monitor the effectiveness of the seawater intrusion barriers, evaluate impacts
from historic and current land use, address poor water quality areas, and also provide
early warning of emerging contaminants of concern.27
oncerll27
OCWD's water quality monitoring programs are broadly classified into three categories: ,
(1) regulatory or compliance with permits, environmental and groundwater drinking
water regulations, (2) committed OCWD and research projects, and (3) Basin ,
management, i.e., or evaluating and protecting Basin water quality. OCWD is compliant
with groundwater drinking water regulations and operates under a Department of Health
Services' approved monitoring program that includes monitoring all drinking water wells ,
within the OCWD, including the TWS's wells. Wells are sampled for regulated and
unregulated chemicals at a required monitoring frequency.
OCWD operates an extensive groundwater quality management program that allows ,
OCWD to address current issues and develop strategies to anticipate and resolve future ,
issues. OCWD's 2004 Groundwater Management Plan has a section devoted solely to
groundwater quality management. The groundwater quality issues facing OCWD and the
TWS and the programs implemented to address those issues are summarized in the
following sections. As previously discussed, TWS's groundwater meets State potable
water quality standards with the exception of nitrate and/or total dissolved solids (TDS) ,
for some of the wells.
Nitrates ,
The Basin has a number of constituents that are water quality concerns. The early
agricultural practices locally contributed to the high concentrations of nitrates in the ,
shallow groundwater. Nitrates are present in groundwater due to contamination by
decaying plant or animal material, manure, fertilizers, domestic sewage and/or geological
formations containing soluble nitrogen compounds. ,
1
ze Metropolitan Water District of Southern California,Regional OWMP,September 2005 Draft
Orange County Water District,Groundwater Management Plan,March 2004.
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Although nitrates are present throughout the Basin, only a small number of areas exceed
the MCL. Groundwater high in nitrate and TDS levels in TWS's service area is shown in
Figure 3.2
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f I /
ice_ '(
ice_
1 9
V
q
LEGEND
TUSTIN CITY LIMITS ,
CITY LIMAS(OTHER)
PUBLIC STREET OR
NITRATE AND TDS ACTIVITY WITH FREEWAY
a TUSTIN WATER SERVICE AREA MWATE STREET
�� f�•• PUS.IC/ Y
'1 ♦� \ OTT ft O WATER SERVICE AREA ,
GROUNDWATER EXCEEDS
Y' 1.000 MCA OF TDS MD
95 MGi OF NITRATES
GROUND WATER EXCEEO3
\ 95 MGILOF NITRATES
Figure 3.2 Nitrate and TDS Activity in TWS Service Area
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Nitrate management goals include remediating groundwater contaminated by nitrate,
attaining the Santa Ana Water Quality Control Board's Region 8 (RWQCB) groundwater
subbasin nitrate-nitrogen water quality objective of 3 mg/L (the MCL is 10 mg/L), and
increasing the frequency of monitoring to quarterly for those wells having concentrations
of nitrate above 50 percent of the MCL currently. Currently, the two nitrate removal
projects within Orange County include the Garden Grove Nitrate Removal Project and
the Tustin Main Street Treatment Plant.
In order to mitigate high nitrate levels, TWS operates two groundwater treatment plants,
the Main Street Plant and 17th Street Desalter Treatment Plant. The Main Street Plant
uses two separate processes. The plant is capable of treating groundwater to below the
nitrate MCL of 45 mg/I through either reverse osmosis (RO) or ion exchange (IX). The
product water is blended with lower quality nitrate water from another well and is then
pumped into the distribution system, producing approximately 2,000 AFY.28 TWS
collects water samples daily to ensure that nitrate levels do not exceed the State MCL of
45 mg/1 of nitrate as NO3.
Total Dissolved Solids (TDS)
Another water quality concern is TDS. OCWD has been proactive in combating the
increase in salinity within the Basin; however, many wells within OCWD, exceed the
RWQCB's water quality objective of 500 mg/L. The secondary MCL range for TDS is
500 mg/I (recommended), 1,000 mg/1 (upper), and 1,500 mg/1 (short term).29 TDS
concentrations range from 223 to over 600 mg/L and averages 461 mg/L within the
Basin.30 The average TDS concentration of untreated groundwater pumped from the
TWS is 719 mg/L.
' The TDS levels within the recharge waters are higher than the average TDS
concentrations within the groundwaters, as a result the TDS concentration within the
groundwater continues to rise. In response to the rising TDS concentrations, OCWD has
implemented groundwater desalter projects (the Irvine Desalter and the Tustin
Seventeenth Street Desalter), has expanded barrier injection facilities, cooperates with
upper Santa Ana watershed stakeholders to control TDS at the source, supports
Metropolitan's efforts to import high quality water, maintains an aggressive monitoring
program, and proposes the Groundwater Replenishment System.31
The 17`h Street Desalter Treatment Plant utilizes reverse osmosis to treat water with
excessive concentrations of nitrates and TDS. This plant receives water from three
different wells and treats approximately 3,000 AFY.
City of Tustin. Urban Water Management Plan,2000
sv City of Tustin. Water Master Plan,p.3-6 through 3-7,2000
00 Orange County Water District,Draft 2003-2004 Engineer's Report on Groundwater Conditions,Water Supply and
Basin Utilization in the Orange County Water District,February 2005.
"Orange County Water District,Groundwater Management Plan,March 2004
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One of the major challenges for OCWD is the contamination of fresh groundwater by
saltwater intrusion and therefore OCWD has implemented two seawater intrusion L
barriers: the Talbert Barrier and the Alamitos Barrier. The coastal seawater monitoring
program focuses on the effectiveness of the barriers and the following parameters are
monitored: water level elevations, chloride, TDS, electrical conductivity, and bromide. '
Each of these parameters aid OCWD in tracking the extent and movement of saline
waters throughout the Basin. '
Volatile Organic Compounds (VOC)
OCWD has an aggressive VOC monitoring program. Because of the monitoring program,
VOC's have been detected in a number of wells within OCWD. Several drinking water
wells have been taken out of service, although not within the TWS. OCWD implemented
the Irvine Desalter Project to address the VOC's and high TDS concentrations in the
Groundwater Basin near Irvine. OCWD is also proposing the Forebay VOC Cleanup
project to prevent further spread of groundwater contaminated with VOC's. The other i
VOC removal project is a well within the City of Santa Ana that treats water for irrigation
at the River View Golf Course. ,
Methyl Tertiary-Butyl Ether(MTBE)
Drinking water wells within OCWD are tested for methyl tertiary-butyl ether, more ,
commonly known as MTBE, at least annually and in some cases quarterly. OCWD
aggressively monitors for MTBE to detect a problem before it reaches a drinking water
well.32 The health effects of MTBE are uncertain. The EPA currently classifies MTBE as
a possible human carcinogen.
Unfortunately there are hundreds of identified sites with leaky underground storage tanks
throughout Orange County. The majority of these sites do not have a groundwater
cleanup program to remove the MTBE from the shallow groundwater. In response to the
MTBE contamination, OCWD filed a lawsuit in 2003 against numerous oil and
petroleum-related companies. The suit seeks funding from responsible parties to pay for ,
the investigation, monitoring, and removal of oxygenates from the Basin.33 Two wells
within OCWD, have been taken out of service because of MTBE contamination. ,
Fortunately, a thick underground clay layer helps protect most of the Groundwater Basin
from surface contamination of MTBE.
N-nitrosodimethylamine(NDMA)
In the year 2000, OCWD discovered NDMA, a known carcinogen, in the injection water ,
used to prevent seawater intrusion at the Talbert Barrier. OCWD adjusted the operation
of Water Factory 21, where recycled water is treated for injection, for NDMA treatment.
Ultraviolet light treatment was added to the process to reduce the occurrence of NDMA
in injection waters.
3z Orange County Water District,2001-2002 Amoral Report
as Orange County Water District,Groundwater Management Plan,March 2004
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There is currently one NDMA removal project within OCWD. Mesa Consolidated Water
District provides wellhead treatment for the removal of NDMA. The treatment process
meets the current NDMA Action Level of 10 nanograms per liter and minimizes further
down gradient migration of NDMA. The TWS's wells have been tested for NDMA and
have not exceeded the action level.
Emerging Contaminants
Pharmaceuticals, personal care products, and endocrine disruptors are considered
emerging environmental contaminants. There are water quality concerns associated with
these emerging contaminants because of their widespread use among the population and
their impact on human health because of exposure to low doses over long periods of time.
OCWD is aware of these contaminants and is working with DHS to track and report their
concentrations in the groundwater.
Colored Groundwater
Colored groundwater is encountered over a broad region of Orange County and is
` estimated in excess of one million acre-feet. The area identified as the "colored water"
area includes the southern part of the Basin near the coastal area. The colored water is
located at depths deeper than the clear zone, and if a deep well can be constructed, a new
source of water may be available. The OCWD 2004 Groundwater Management Plan
reports nine wells have been drilled in the colored zone. These wells aid in reducing the
groundwater level of the colored aquifer and thus minimize the potential for upward
vertical migration of colored water into the clear zones.
Water Quality Programs
OCWD supports and is involved in many programs that address water quality concerns in
the Basin. Some of the programs and activities include:
• Source Water Protection— Similar to Metropolitan, OCWD has completed a drinking
water source assessment for the existing drinking supply wells. The source water
assessment develops management strategies to prevent or reduce the risks to
groundwater from pollution such as:
1) Delineates the time-of-travel aquifer capture zone of the source and identifies
land area to be protected
2) Identifies and locates potential sources of contamination to the well
3) Manages land use and planning for future development
4) Requires development to comply with the County's Municipal Stonnwater
Water Quality Management Plan to protect groundwater replenishment water
' • Surface Water Monitoring — OCWD also conducts routine monitoring of the Santa
Ana River and other surface waterways in the upper watershed. OCWD is conducting
the Santa Ana River Water Quality and Health Study to verify the sustainability of
continued use of river water for recharge and its impact on groundwater quality.
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• Constructed Wetlands — OCWD operates the Prado Basin Wetland in cooperation
with the US Army Corps of Engineers and the US Fish and Wildlife Service to reduce
the nitrogen concentration of river water. The constructed wetlands comprise of 465
acres.
• Public Outreach — OCWD has implemented a public education outreach program ,
called the Groundwater Guardian Team to inform the public about the benefits of '
protecting the Groundwater Basin.
• Re ulation — In May of 1987, OCWD adopted a Groundwater Quality Protection
Policy. The policy established the following objectives:
1) Maintain a suitable groundwater supply for all existing and potential
beneficial uses
2) Prevent degradation of the quality of the groundwater supply ,
3) Assist responsible regulatory agencies in identifying sources of pollution to
assure cleanup by the responsible party(s)
4) Maintain or increase the Basin's usable storage capacity ,
5) Inform the general public of water quality problems as they are encountered as
well as the overall condition of the groundwater supply, through appropriate ,
regulatory agencies and producers
3.2 WATER QUALITY EFFECTS ON WATER MANAGEMENT
STRATEGIES AND SUPPLY RELIABILITY
The previous section summarized the general water quality issues of Metropolitan's ,
imported water and OCWD's groundwater supplies and the concerns for TWS. Similar to ,
Metropolitan and OCWD, the TWS prepared an assessment of the TWS's drinking water
in December 2002. The groundwater sources were found to be most vulnerable to
possible contamination from dry cleaners, electrical/electronic manufacturing, gas ,
stations, known contaminant plumes, metal plating/finishing/fabricating, military
installations, and plastics/synthetic producers.14 The TWS continues to monitor its
groundwater wells for the first indication of problems as part of its water management ,
strategy.
TWS's groundwater meets State potable water quality standards with the exception of
nitrate and/or TDS for some of the wells. In order to mitigate high nitrate and TDS levels,
TWS operates two groundwater treatment plants, the Main Street Plant and 17th Street
Desalter Treatment Plant. Both treatment plants have been successful in lowering high
nitrate and TDS water to achieve compliance with the nitrate and TDS requirements. In
the past approximately eight years there has been a downward trend of nitrate I
concentrations in TWS wells.35
"City of Tustin,2005 Water Quality Report. ,
"City of Tustin. Water Master Plan,p.3-7. 2000
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TWS does not anticipate any changes in its available imported water supplies due to
water quality issues in part because of the mitigation actions undertaken by Metropolitan
as described earlier. In the near future, EPA's Stage 2 Regulation of the Disinfection
Byproducts Rule will be in effect. Stage 1 was implemented in 2002 and lowered the total
THM maximum annual average concentration level in water supplies; stage 2 will further
lower the THM concentration level. TWS's water supplies meet the requirements of
Stage 1 and will be required to meet Stage 2 levels when they become finalized.
TWS has taken steps to insure an adequate and reliable water supply for the community.
Well and storage studies have been made by independent consulting engineering firms to
determine sufficient water supply and stringent water quality standards. Water
management strategies and supply reliability are in place to mitigate for population
growth and cyclic drought periods. TWS has consistently maintained standards for water
1 quality, thereby enhancing reliability at a local level. TWS will continue to seek
alternatives and modifications to improve existing facilities to obtain the highest quality
water possible.
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SECTION 4
WATER RELIABILITY PLANNING
4.1 RELIABILITY OF WATER SUPPLIES FOR TUSTIN WATER SERVICES
The City of Tustin and all communities and water agencies in Orange County are facing
increasing challenges in their role as stewards of water resources in the region. The
region faces a growing gap between its water requirements and its firm water supplies.
Increased environmental regulations and the collaborative competition for water from
outside the region have resulted in reduced supplies of imported water. Continued
population and economic growth in Orange County result in increased water demand
within the region, putting an even larger burden on local supplies.
During the 2004/05 Fiscal Year, the City received approximately 48 percent of its water
supply from local groundwater, and 52 percent from import water from Metropolitan.
The portion of the City's supply from groundwater was less than the 66 percent allowable
BPP because of in-lieu purchases made by Tustin. Actual percentages vary somewhat on
an annual basis depending on the extent in-lieu delivery programs are implemented.
Both MWDOC and OCWD are implementing water supply alternative strategies for the
region aimed at ensuring a reliable future water supply for the Orange County region.
Strategies are identified in the MWDOC 2005 Regional UWMP, OCWD's Long Term
Facilities Plan (Draft August 2005), OCWD 2020 Master Plan Report, and the OCWD
2004 Groundwater Management Plan. The optimum water supply strategy should attempt
to meet the following objectives:
• Ensure that the Groundwater Basin is protected
• Ensure available water for Orange County residents and businesses in the future
• Minimize the consumers water supply cost
• Use a variety of sources
• Reverse the adverse salt balance in the Groundwater Basin
• Provide flexibility to allow both MWDOC and OCWD to quickly take advantage
of changing and new markets if and when they develop
The reliability of the City's water supply is currently dependent on the reliability of both
imported and groundwater water supplies, which are managed and delivered by
Metropolitan and OCWD, respectively. The following sections will discuss these
agencies, and others throughout the region, their roles in water supply reliability, and the
near and long-term efforts they are involved with to ensure future reliability of water
supplies to the City and the region as a whole.
TWS has developed a water system capital improvement program (CIP) to minimize its
dependence on imported water supply and to foster a program to increase the
groundwater quality in the aquifer underlying its service area. TWS's goal is to develop
local groundwater sources that when combined with treated groundwater supplies will
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provide a projected 100 percent of the required supply within the next 20 years. Together
with Metropolitan's Local Resource Program (Groundwater Recovery), TWS is ,
implementing a groundwater development program to utilize existing wells and drill
additional wells to make use of the local groundwater supply. TWS has seven existing
untreated-groundwater wells.
As part of the CIP, the following reservoirs will have major to minor retrofits: (1) the
existing Main Street and Rawlings Reservoirs will be replaced at the same sites to
increase the system storage capacity; (2) the Foothill and Simon Ranch Reservoirs will
have structural rehabilitation, including replacement of the Simon Ranch Booster Pump
Station; and (3) the John Lyttle and Newport Avenue Reservoirs will have minor
rehabilitation.
The CIP also addresses distribution system improvements, including resizing of the
pipeline system to distribute water throughout the system to meet all demand conditions
including peak hour demand and maximum day demand plus fire flow.
4.1.1 Regional Agencies and Water Reliability ,
Metropolitan Water District of Southern California (Metropolitan) ,
Metropolitan's primary goal is to provide reliable water supplies to meet the water needs
of its service area at the lowest possible cost. The reliability of Metropolitan's water ,
supply has been threatened as existing imported water supplies from the Colorado River
and SWP face increasing challenges. Despite these challenges, Metropolitan continues to
develop and encourage projects and programs to ensure reliability now and into the
future. One such project is Metropolitan's recently completed Diamond Valley Lake in
Hemet, California; an 800,000 AF capacity reservoir for regional seasonal and ,
emergency storage for SWP and Colorado River water. The reservoir began storing water
in November 1999 and reached the sustained water level by early 2002.36
Colorado River Aqueduct (CRA) ,
Pursuant to the 1964 U.S. Supreme Court decree, Metropolitan's dependable supply of
Colorado River water was limited to 550,000 acre-feet per year assuming no surplus or
unused Arizona and Nevada entitlement was available and California agricultural
agencies use all of their contractual entitlement. Historically, Metropolitan has also
possessed a priority for an additional 662,000 AFY depending upon availability of
surplus water. In addition, Metropolitan maintains agreements for storage, exchanges and
transfers within the service area of Imperial Irrigation District that provide water to
Metropolitan.37
36 Metropolitan Water District of Southern California,Regional UWMP,2005 ,
"Metropolitan Water District of Southern California. Integrated Water Resources Plan. 2003
Update.May 2004.
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Water supplies from the Colorado River have been and continue to be a topic of
negotiation and intense debate. The 1964 Court Decree required the state of California to
limit its annual use to 4.4 million acre-feet (MAF) basic annual apportionment of
Colorado River water plus any available surplus. To keep California at 4.4 MAF,
Metropolitan reduces its level of diversions in years when no surplus is available.
In 1999, the Colorado River Board developed "California's Colorado River Water Use
Plan," also known as the "California Plan" and the 4.4 Plan", which was endorsed by all
seven Colorado River Basin states and the U.S. Department of the Interior. This plan
developed the framework that specifies how California will transition and live within its
basic apportionment of 4.4 MAF of Colorado River water.
The U.S. Bureau of Reclamation implemented Interim Surplus Guidelines to assist
California's transition to the Plan. Seven priorities for use of the waters of the Colorado
River within the State of California were established. Metropolitan would only be able to
exercise its fourth priority right to 550,000 AF annually, instead of the maximum
aqueduct capacity of 1.3 MAF. Priorities 1 through 3 cannot exceed 3.85 MAF annually.
Together, Priorities 1 through 4 total California's 4.4 MAF apportionment.
In October 2003, the Quantification Settlement Agreement (QSA), a critical component
of the California's Colorado River Water Use Plan and for purposes of Section 5(B) of
the Interim Surplus Guidelines, was authorized defining Colorado River water deliveries,
delivery of Priority 3(a) and 6(a) Colorado River water, and transfer and other water
delivery commitments, thus facilitating the transfer of water from agricultural agencies to
urban uses. The QSA is a landmark agreement, signed by the four California Colorado
River water use agencies and the U.S. Secretary of the Interior, which will guide
reasonable and fair use of the Colorado River by California through the year 2037.
Metropolitan's Integrated Water Resources Plan 2003 Update, recognizes that the QSA
supports Metropolitan's development plans for CRA deliveries, and demonstrates the
reliability benefits as a result of the QSA and existing supply enhancement programs.
State Water Project(SWP)
The reliability of the SWP impacts Metropolitan's member agencies' ability to plan for
future growth and supply. DWR's Bulletin 132-03, December 2004, provides certain
SWP reliability information, and in 2002, the DWR Bay-Delta Office prepared a report
specifically addressing the reliability of the SWP.38 This report, The State Water Project
Delivery Reliability Report, provides information on the reliability of the SWP to deliver
water to its contractors assuming historical precipitation patterns. The following SWP
reliability information is included in these reports.
On an annual basis, each of the 29 SWP contractors including Metropolitan request an
amount of SWP water based on their anticipated yearly demand. In most cases,
se Department of Water Resources,State Water Project Delivery Reliability Report. 2002.
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Metropolitan's requested supply is equivalent to its full Table A Amount; currently at
1,911,500 AFY. After receiving the requests, DWR assesses the amount of water supply ,
available based on precipitation, snow pack on northern California watersheds, volume of
water in storage, projected carry over storage, and Sacramento-San Joaquin Bay Delta
regulatory requirements. For example, the SWP annual delivery of water to contractors ,
has ranged from 552,600 AFY in 1991 to 3.5 MAF in 2000. Due to the uncertainty in
water supply, contractors are not typically guaranteed their full Table A Amount, but ,
instead a percentage of that amount based on the available supply.
Typically, around December of each year, DWR provides the contractors with their first ,
estimate of allocation for the following year. For example, on November 23, 2005 DWR
announced a 55 percent initial allocation of contractor's Table A Amounts for the year ,
2006. Due to the variability in water supply for any given year, it is important to
understand the reliability of the SWP to supply a specific amount of water each year to
the contractors. As hydrologic and water conditions develop throughout the year, DWR ,
revises the allocations.
On January 14, 2005, SWP supplies were projected to meet 60 percent of most SWP
contractor's Table A Amounts. This allocation was increased to 70 percent on April 1,
2005 and to 80 percent on April 21, 2005. The final allocation increase occurred on May ,
27, 2005 and the notice projected SWP would meet 90 percent of most contractor's Table
A Amounts.
DWR is preparing an update to the SWP Reliability Report issued in 2003 and expects it
to be complete by the end of 2005. On November 18, 2005, DWR released the draft of
the 2005 SWP Delivery Reliability Report for public review and comment. The draft ,
Reliability Report updates the reliability report finalized in 2003 with the inclusion of two
updated studies. The updated studies, 4 and 5, contain the most current information for ,
assumed demands of SWP contractors. The results of studies 4 and 5 show average
deliveries of 69 percent of full Table A under current conditions and 77 percent under
future conditions. The more recent studies also show a minimum delivery of 4 and 5 ,
percent, current and future years respectively, compared to 20 percent for the 2003 report.
These amounts are shown in Table 4.1.1-1 on the following page compared to the earlier ,
CALSIM modeling as discussed below.
DWR analyzed the SWP's reliability using the California Water Allocation and Reservoir 1
Operations Model (CALSIM II model) in their Reliability Report. The CALSIM 11 model
was developed by DWR and the U.S. Bureau of Reclamation (USBR) to simulate
operations of the SWP and the Central Valley Project (CVP). The CALSIM II model is
used to estimate water deliveries to both SWP and CVP users under various assumptions
such as hydrologic conditions, land use, regulations, and facility configurations. ,
Documentation for CALSIM II, including assumptions, can be found on the DWR Web
site at http://modeling.water.ca.gov.
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One of the key assumptions of the CALSIM II model is that past weather patterns will
repeat themselves in the future. The model uses a monthly time step to calculate available
water supply based on historical rainfall data from 73 years of records (1922— 1994). The
model scenarios used in the preparation of the Reliability Report also assumed that
regulatory requirements and facilities would not change in the future. DWR considered
this assumption conservative since additional facilities such as reservoirs may be
implemented in the future to specifically increase the SWP's reliability.
The CALSIM It model was used to complete three benchmark studies dated May 17,
' 2002 for the Reliability Report. The benchmark studies evaluated the water supply and
demand at the 2001 condition and at the 2021 condition. In 2001, SWP water demand
was estimated to vary from 3.0 to 4.1 MAF per year depending on the weather conditions
(wet or dry years). SWP water demands in 2021 were estimated to range from 3.3 to 4.1
MAF per year. DWR prepared two benchmark studies for the 2021 condition. The first
study assumed that SWP water demands would depend on weather conditions, whereas
the second study assumed the contractor's water demand would be their maximum Table
A Amount; 4.1 MAF per year regardless of weather. Table 4.1.1-1 shows the results,
which demonstrate that SWP deliveries, on average, can meet 75 percent of the
maximum Table A Amount.
Table 4.1.1-1
SWP Table A Deliveries from the Delta
Percent of Total Table A Amount of 4.133 MAF
(MAF)
Stixdy `4 Average Maximum a'Minimum
2001 Study 2.962 (72%) 3.845 (93%) 0.804 (19%)
2021 Study Al'l 3.083 (75%) 4.133 (100%) 0.830 (20%)
2021 Study Bhl 3.130 (76%) 4.133 (100%) 0.830 (20%)
I Revised-Demand
"Today 2.818 (69%) 3.848 (94%) 0.159 (4/o° )
Revised-Demand
Future 3.178 (77%) 4.133 (100%) 0.187 (5%)
)
Source: Department of Water Resources, Excerpts from Working Draft of 2005 SWP Delivery
Reliability Report—Attachment 1, May 25, 2005
P] Assumes demands depend on weather conditions.
[21 Assumes demands at maximum Table A amount.
X31 Revises demands to current conditions.
"l Revises demands at levels of use projected to occur by 2025.
The Monterey Agreement states that contractors will be allocated part of the total
available project supply in proportion to their Table A Amount. The Monterey
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Agreement changed SWP water allocation rules by specifying that, during drought years,
project supplies be allocated proportionately based on the maximum contractual Table A
Amount. Water is allocated to urban and agricultural purposes on a proportional basis,
deleting a previous initial supply reduction to agricultural contractors. The agreement
further defines and permits permanent sales of SWP Table A Amounts and provides for ,
transfer of up to t30,000 AF of annual Table A Amounts from agricultural use to
municipal use. The Agreement also allows SWP contractors to store water in another
agency's reservoir or groundwater basin, facilitates the implementation of water transfers
and provides a mechanism for using SWP facilities to transport non-project water for
SWP water contractors. The Agreement provides greater flexibility for SWP contractors ,
to use their share of storage in SWP reservoirs.
Report on Metropolitan's Water Supplies:Blueprint for Water Reliability ,
Metropolitan released a Report on Metropolitan's Water Supplies, A Blueprint for Water
Reliability on March 25, 2003, to provide updated information on Metropolitan's
projected supply and demand for incorporation into Water Verification and Water Supply
Assessments for compliance with SB 221 and SB 610, respectively. These bills ,
implement requirements to connect land use to a sufficient water supply before a
development can be approved. The Metropolitan report addresses water supply reliability
issues and states Metropolitan's roles and responsibilities, which include the following:
(1) implementing water management programs that support the development of cost-
effective local resources; (2) securing additional imported supplies as necessary through ,
programs that increase the availability of water delivered through the Colorado River
Aqueduct and the SWP; (3) providing the infrastructure needed to integrate imported and
local sources; (4) establishing a comprehensive management plan dealing with periodic
surplus and shortage conditions; and (5) developing a rate structure that strengthens
Metropolitan's financial capabilities to implement water supply programs and make
infrastructure improvements.
The report details that Metropolitan's regional water demand projections are 6 percent to ,
16 percent higher, depending on which 5-year projection period and 11 percent for Year
2025, than the aggregated projections of Metropolitan's member agencies. As stated in
the Report, "this difference indicated that Metropolitan supplies would provide a level of
`margin of safety' or flexibility to accommodate delays in local resources development or
adjustments in development plans."39 Additionally, the report concludes that "current
practices allow Metropolitan to bring water supplies on-line at least ten years in advance ,
of demand with a very high degree of reliability." More particularly, Metropolitan
documented sufficient currently available supplies to meet 100 percent of member
agencies' supplemental water demands for 20 years under Average and Wet Year
conditions, for 15 years under Multiple Dry Year conditions (with 8 to 26 percent reserve
capacity), and for 15 years under Single Dry Year conditions (with 8-25 percent reserve ,
capacity). With the addition of supplies under development, Metropolitan will be able to
3' Metropolitan Water District of Southern California. Report on Metropolitan Water Supplies,A Blueprint for
Water Reliability,p.9. March 25,2003.
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meet 100 percent of its agencies' supplemental water needs under all supply and demand
conditions through 2030 with 20-25 percent reserve capacity.40
The Report also identifies the ways Metropolitan is managing changes in southern
California's water supplies, including reduced Colorado River deliveries and water
quality constraints. In addition, opportunities for additional supplies are currently being
Iimplemented in the following ways:
1) Full Diamond Valley Lake: The Lake is now fully operational with an
increased conveyance capacity for refill system storage.
2) Re-Operation of Storage and Transfer Programs: In 2003, Metropolitan
developed additional storage and transfer capabilities and completed filling
local resources to achieve full storage accounts in operational reservoirs and
banking/transfer programs.
3) Enhanced Conservation Programs: A new campaign is designed to encourage
more efficient outdoor water use and promote innovative conservation
measures.
4) Development of Additional Local Resources: There are promising
opportunities identified to develop seawater desalination and expand the Local
' Resources Program.
In addition to the Report on Metropolitan's Water Supplies, A Blueprint for Water
Reliability, MWD's September 2005 Draft Regional Urban Water Management Plan
(RUWMP) demand and supply analysis also projects surpluses (of regional supplies
compared with regional demands) ranging from 5 percent to 35 percent in all years and
all drought scenarios through 2030.41
As demand forecasts are refined, supply goals are also refined. Metropolitan has
consistently supplied over 50 percent of water supplies to the southern California region.
To continue to accomplish this, Metropolitan continues to approve new and innovative
projects and programs to ensure reliability. For example, in August 2001, Metropolitan
took action to move forward initiatives to bolster future supplies by supporting seawater
desalination projects, increased commercial conservation efforts, improve water quality
by decreasing salinity in supplies from the State Water Project and the Colorado River,
increased underground storage and retrieval facilities, adopted principles for establishing
cooperative programs, and endorsed legislation that would further water reliability.
Some of these projects are further described in Section 4.4.
Integrated Water Resources Plan (IRP)
To address Metropolitan's reliability challenges, Metropolitan and its member agencies
developed an Integrated Water Resources Plan (IRP) in 1996. The overall objective of the
i0 Metropolitan Water District of Southern California. Report on Metropolitan Water Supplies,A Blueprint for
Water Reliability,p.24-25. March 25,2003.
"Tables II-7,8 and 9 of Metropolitan Water District of Southern California,Regional UWMP,September 2005
' Draft
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IRP process is the selection and implementation of a Preferred Resource Mix (or
strategy) consisting of complementary investments in local water resources, imported
supplies and demand-side management that meet the region's desired reliability goal in a
cost-effective and environmentally sound manner. The 1996 IRP was reviewed as part of
Metropolitan's strategic plan and rate refinement to guide the development and ,
implementation of revised Metropolitan water management programs through the year
2005.
The IRP 2003 Update was approved and released July 13, 2004, and includes various
projects and programs that contribute to the reliability of Metropolitan's imported water
supplies. The IRP Update concluded that the resource targets from the 1996 IRP, factored
in with changed conditions, will continue to provide for 100 percent reliability through ,
2025.
While the IRP 2003 Update includes goals for a variety of resource targets, it identified '
the most significant programs as conservation and local supply development among the
Preferred Resource Mix. The IRP details the Local Resources Program (LRP) and the
Seawater Desalination Program as a means to increase reliability of local supplies. ,
Metropolitan initiated the LRP to promote the development of water recycling projects
that reduced demand for imported water and improved regional water supply reliability in
1982. In 1991, the Groundwater Recovery Program was implemented to similarly
promote the recovery of local degraded groundwater supplies. In 1995, both programs
were combined into the LRP. Currently, the LRP, including both recycling and ,
groundwater recovery, has invested over $121 million and partnered with member
agencies on 53 recycled water projects and 22 groundwater recovery projects generating
251,000 acre feet of local supply in 2002.42
The IRP 2003 Update states that Metropolitan's regional production target is 500,000 AF ,
by 2020 for its LRP. Metropolitan's current projection of regional implementation of
recycling, groundwater recovery, and seawater desalination resource targets exceeds the
1996 IRP goals. Although in FY 2002, recycling and groundwater recovery programs ,
narrowly missed their target, the region is expected to meet its 2010 and 2020 targets.
Meeting the targets will require the region to produce 159,000 AF of additional local ,
project and/or seawater desalination supply by 2010 and 249,000 AF by 2020. Overall,
the region has developed about 50 percent of the 1996 IRP local resources target for
2020. ,
Metropolitan continues to encourage development of local water resource projects
through offering financial incentives through the LRP to its member agencies. These ,
anticipated water supply benefits are incorporated into the forecasts of demand on
Metropolitan. In addition to the LRP, Metropolitan also provides financial and technical ,
assistance for implementing water conservation Best Management Practices, as well as a
significant investment in regional and local water conservation programs. Metropolitan
12 Metropolitan Water District of Southern California.Integrated Water Resources Plan,2003 Update.May 2004.
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L
was also responsible for distributing $45 million in funds from Proposition 13 funding for
development of conjunctive management programs in southern California.
Municipal Water District of Orange County(MWDOC)
In 1951, MWDOC was formed to provide supplemental water to many purveyors within
Orange County who were not Metropolitan member agencies. MWDOC was formed for
the purpose of contracting with Metropolitan to acquire supplemental import water
supplies from northern California and the Colorado River for use within the Orange
' County area. MWDOC is Metropolitan's second largest wholesale member agency.
MWDOC represents 30 member agencies, including 14 special districts, 14 city water
departments, one private water company and one mutual water company. The actions of
MWDOC have a regional benefit to TWS although the TWS is not a direct member
agency.
MWDOC represents its members at a regional, state and federal level, and advocates for
the development and protection of imported water supplies and planning along with
coordinating the water needs for its service area.43 MWDOC's water management goals
and objectives include working together with Orange County water agencies, including
the TWS when applicable, to focus on solutions and priorities for improving Orange
County's future water supply reliability.
Efforts of MWDOC to maintain a reliable water supply include a commitment to the
intensive and cost-effective development of Orange County's water resources.
Development of local water supplies will lessen Orange County's dependence on
imported water. Therefore, in order to maintain a more reliable water supply, a number of
projects including storage, recycling, conjunctive use with groundwater basins, ocean
desalination and new groundwater development will contribute to enhanced water
reliability.
Programs and projects directly managed by MWDOC include exchanges and transfers,
participation with the Best Management Practices (BMPs) as well as extensive
conservation and educational programs available to its member agencies. These programs
and projects support further water reliability for its member agencies and throughout
Orange County.44
Integrated Regional Water Management Plan
MWDOC has been working with the County of Orange, as the lead agency, and 24 other
cities and special districts to develop and integrate regional strategies for water
management within the region. In an effort to manage local and imported water supplies,
projects have been identified that protect communities from drought, enhance water
supply reliability, ensure continued water security, optimize watershed and coastal
resources, improve water quality, and protect habitat. To date, nearly 100 projects have
`[On-Line]. Municipal Water District of Orange County. Available: http://www.mwdoc.coiii.2002.
Municipal Water District of Orange Comity,Regional UWMP,2005.
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been identified and the responsibility of implementing the projects has been granted to
the South Orange County Integrated Regional Water management (IRWM) Group. '
South Orange County Water Reliability Study
To ensure continued water reliability for south Orange County, 11 Orange County
agencies, Metropolitan, and the USBR joined together to fund the South Orange County
Water Reliability Study (SOCWRS). MWDOC served as the lead agency in this effort.
The SOCWRS provides an objective plan that addresses the pressing need to ensure
water supply in the event of future water supply outages and/or emergencies. Although
the study is focused on south Orange County, implementing measures recommended in
the study will provide regional benefits for all of Orange County's water supply, and thus ,
benefit the TWS.
East Orange County Water District(EOCWD) '
In 1961, EOCWD was formed to provide supplemental imported water to several water ,
purveyors in the Tustin/Orange area of Orange County. The Tustin Waterworks, which
has since been acquired by the City of Tustin, was included among those purveyors and
has historically been the largest purchaser of water from EOCWD. ,
Although EOCWD operates both a wholesale and a retail system (the latter acquired from ,
the County of Orange in 1985), the Tustin Water Services receives water only from the
EOCWD wholesale system. EOCWD receives its wholesale supply from three
connections to the Metropolitan System including the OC-70 connection to the Allen- '
McColloch Pipeline and the OC-48 and OC-43 connections to the East Orange County
Feeder No. 2. The former two connections deliver water into the EOCWD system, which
is subsequently delivered through several metered connections to Tustin Water Services.
The OC-43 connection delivers water directly into Tustin Water Services' system.
Orange County Water District(OCWD)
OCWD is responsible for the protection of water rights to the Santa Ana River in Orange
County as well as the management and replenishment of the Basin.45 OCWD replenishes
and maintains the Basin at safe levels while more than doubling the Basin's annual yield
with the best available technology. OCWD primarily recharges the Basin with water from ,
the Santa Ana River and to a lesser extent with imported water purchased from
Metropolitan. Other processes such as recycling of wastewater, conservation and water I
use efficiency programs, and creative water purchases have aided in replenishing the
Basin to desired levels to meet required demands.
Furthermore, OCWD has invested in seawater intrusion control (injection barriers), '
recharge facilities, laboratories, and Basin monitoring to effectively manage the Basin.
OCWD Groundwater Management Plan,2004.
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Consequently, although the Basin is defined to be in an "overdraft" condition, it is
actually managed to allow utilization of up to 500,000 AF of storage capacity of the
Basin during dry periods, acting as an underground reservoir and buffer against
drought.46 OCWD also operates the Basin to keep the target dewatered Basin storage at
200,000 AF as an appropriate accumulated overdraft.47 If the Basin is too full, artesian
conditions can occur along the coastal area, causing rising water and water logging, an
adverse condition.
Since the formation of OCWD in 1933, OCWD has made substantial investments in
' facilities, Basin management and water rights protection, resulting in the elimination and
prevention of adverse long-term "mining" overdraft conditions. OCWD continues to
develop new replenishment supplies, recharge capacity and Basin protection measures to
meet projected production from the Basin during average/normal rainfall and drought
periods.
OCWD Long Term Facilities Plan
OCWD is preparing its Long Term Facilities Plan (LTFP) and will evaluate potential
projects that may be implemented over a 20-year planning period. The LTFP's goal is to
enhance Basin management and water quality management activities. The LTFP is
proposed to accomplish the following goals:
1 ■ Evaluate projects to cost effectively increase the amount of sustainable Basin
production and protect water quality;
Develop an implementation program for the recommended projects;
Establish the Basin's future maximum (target) annual production amount and
correspondingly how much new recharge capacity would be required; and
Estimate impacts to potential future Replenishment Assessment and Basin
Production Percentage rates.
A program environmental impact report (PEIR), pursuant to the California
Environmental Quality Act (CEQA), is being prepared to evaluate environmental impacts
of projects in the LTFP and increased levels of Basin production to serve lands currently
within OCWD plus proposed annexations of lands by the City of Anaheim and Irvine
' Ranch Water District. In the PEIR, OCWD's groundwater model is used to evaluate
groundwater conditions, such as groundwater elevations and protection of Basin water
supplies from seawater intrusion, for specified amounts of Basin production with and
without annexation.
The LTFP utilizes information recently developed in OCWD's Groundwater
' Management Plan and Recharge Development Study. The LTFP includes a master list of
°B Orange County Water District,Groundwater Management Plan,2004.
47 Orange County Water District,Draft 2003-2004 Engineer's Report on Groundwater conditions,Water Supply and
Basin Utilization in the Orange County Water District,February 2005.
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developed and proposed projects. The various projects are grouped into five categories:
(1) recharge facilities; (2) water source facilities; (3) Basin management facilities; (4) I
water quality management facilities; and (5) operational improvements facilities. Each
project is evaluated using criteria such as technical feasibility, cost, institutional support,
functional feasibility, and environmental compliance. The LTFP develops an ,
implementation plan for the 28 recommended projects over the 20 year planning period.
At the time of this Plan, the LTFP was scheduled to be complete in 2005, and would be
updated periodically to reflect changes in pumping and Basin response forecasts to future
production increases. '
OCWD 2020 Water Master Plan Report(MPR)
OCWD's 2020 Water Master Plan Report (MPR) describes local water supplies and
estimates their availability extending to the year 2020. Specifically, OCWD states in their
2020 Water MPR that significant water supply sources will be available in the future for t
potable, non-potable, and recharge purposes. The 2020 Water MPR discusses source
waters such as imported water from Metropolitan, base flows from the Santa Ana River, ,
treated wastewater through the OCWD/OCSD Groundwater Replenishment System
(GWRS) program, and possibly desalinated ocean water. The local supplies' availability
and projections from the 2020 Water MPR are not being pursued, but instead will be '
revised and replaced with the LTFP.
Orange County Sanitation District (OCSD) ,
Wastewater from TWS's service area is collected and treated by OCSD. OCSD manages ,
wastewater collection and treatment for approximately 471 square miles in central and
northwest Orange County, which includes 21 cities, 3 special districts, and 2.4 million
residents.48 OCSD utilizes the following two facilities: Reclamation Plant No. 1 in
Fountain Valley and Treatment Plant No. 2 in Huntington Beach to treat a combined
daily average of 264 million gallons of wastewater.49 Effluent from Reclamation Plant ,
No. 1 is either routed to the ocean disposal system or is sent to the OCWD facility, Green
Acres Project, for advanced treatment and recycling. The Green Acres Project supplies
recycled water to various municipal users in Orange County and offsets the demand for ,
potable water supplies.
OCWD/OCSD Groundwater Replenishment System (GWRS) ,
The GWRS is a jointly funded project of OCWD and OCSD. The GWRS is a water
supply project designed to ultimately reuse approximately 110,000 AFY of advanced
treated wastewater.50 The objective of the project is to develop a new source of reliable,
high quality, low salinity water that will be used to replenish the Basin and expand the ,
°d Orange County Sanitation District Facts and Key Statistics.www.ocsd.com.January 2005
°Y MWDOC 2005 Regional Urban Water Management Plan
s'Orange County Water District,Draft Long-Term Facilities Plan Review Draft,August 2005.
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existing seawater intrusion barrier. Additional information regarding the GWRS is
presented in Section 8. The benefits of the proposed GWRS include:
• Supply a significant amount of highly treated recycled water required by OCWD
to maintain a higher basin production percentage through and beyond the year
2020.
• Provide a reliable replenishment water supply in times of drought.
■ Expand the seawater intrusion barrier to provide additional groundwater
' production in the coastal zone.
Regional Water Quality Control Board— Santa Ana Region S
Background
The State Water Resources Control Board (SWRCB) and the nine Regional Water
I Quality Control Boards (Regional Boards) are responsible for the protection and, where
possible, the enhancement of the quality of California's waters. The SWRCB sets
statewide policy, and together with Regional Boards, implements state and federal laws
and regulations. Each of the nine Regional Boards adopts a Water Quality Control Plan
or Basin Plan, which recognizes and reflects regional differences in existing water
quality, the beneficial uses of the region's ground and surface waters, and local water
quality conditions and problems.51
1 In 1975, the Santa Ana Regional Water Quality Control Board (RWQCB) adopted the
original Water Quality Control Plan (Basin Plan) for the Santa Ana River Basin. In 1995,
the RWQCB updated the Basin Plan to address issues that had evolved over time due to
increasing populations and changing water demands in the region. The scope of the
document covers the Santa Ana River Basin, which includes the upper and lower Santa
Ana River watersheds including northwestern Orange County. In 2002, a triennial review
of the Basin Plan was performed. In July 2002, at a public hearing, the RWQCB adopted
I Resolution No. R8-2002-0070, approving the Triennial Review Priority List and Work
Plan.
The Basin Plan is more than just a collection of water quality goals and policies,
descriptions of conditions, and discussions of solutions. It is also the basis for the
RWQCB's regulatory programs. The Basin Plan establishes water quality standards for
all the ground and surface waters of the region. The RWQCB also regulates water
discharges to minimize and control their effects on the quality of the region's ground and
surface water. Permits are issued under a number of programs and authorities.
Water quality problems in the region are listed in the Basin Plan, along with the causes,
where they are known. For water bodies with quality below the levels necessary to allow
all the beneficial uses of the water to be met, plans for improving water quality are
included. Legal basis and authority for the RWQCB reflects, incorporates, and
"Santa Ana Regional Water Quality Control Board. Region 8 Water Quality Control Plan(Santa Ana River Basin).
,. January 1995.
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implements applicable portions of a number of national and statewide water quality plans
and policies, including the California Water Code (Porter-Cologne Water Quality Control
Act) and the Clean Water Act.52
Key Regional issues
Water quality degradation due to high concentrations of nitrogen and TDS is the most
significant regional water quality problem in the Santa Ana River Watershed
(Watershed). Historically, the Santa Ana River likely flowed during most of the year,
recharging deep alluvial groundwater basins in the inland valley and the coastal plain. ,
However, irrigation projects eventually led to the diversion of all surface flow in the
river, and the quantity of groundwater recharge diminished greatly. Water quality
concerns in the Watershed focus on elevated concentrations of TDS and total inorganic ,
nitrogen (TIN).
A Task Force was formed in 1995 to provide oversight, supervision, and approval of a
study to evaluate the impact of TIN and TDS on water resources in the Watershed. The
study is coordinated by the Santa Ana Watershed Project Authority (SAWPA), a joint '
powers agency of which OCWD and OCSD are member agencies, and is investigating
questions related to TIN and TDS management in the Watershed, including groundwater
subbasin water quality objectives, subbasin boundaries, and regulatory approaches to
wastewater reclamation and recharge.53
Water Resources and Water Quality Management
Numerous water resource management studies and projects, focused on water quality ,
and/or water supply, are in progress in the Region under the auspices of a variety of
parties. As stated above, the RWQCB has been working with SAWPA concerning water
supply and reliability issues. SAWPA has been studying TIN and TDS issues and is a ,
valuable partner in water resource and water quality management. SAWPA, and its
member agencies, conduct water related investigations and planning studies, and build
physical facilities where needed for water supply, wastewater treatment or water quality !
remediation. Other studies and projects ongoing and planned that will affect reliability
and quality of water supplies to the Region, including areas affecting water supplies in
the Orange County Basin, are discussed further in following sections of this Assessment.
Some of these activities bear directly on the implementation of the Basin Plan, while
others may lead to future Basin Plan amendments to incorporate appropriate changes,
such as revised regulatory strategies for various dischargers. These investigations and the
implementation of appropriate physical solutions are an essential and integral part of the
effort to restore and maintain water quality in the Region.
s:Santa Ana Regional Water Quality Control Board.Region 8 Water Quality Control Plan(Santa Ana River Basin).
January 1995.
s'Santa Ana Regional Water Quality Control Board.Watershed Management Initiative Revised May 2004.
Final Draft 317106 4-14
Tustin Water Services
2005 Urban Water Management Plan Section 4
4.2 DEMAND AND SUPPLIES COMPARISON
Metropolitan Water District Supplies and Demands
As previously discussed, the City is a member agency of EOCWD, which is a member
agency of MWDOC, which is a member agency of Metropolitan. Therefore, the
reliability of Metropolitan's system does impact the City and will be discussed in this
Section.
In its September 2005 Draft Regional UWMP, Metropolitan chose the year 1977 as the
single driest year since 1922 and the years 1990-1992 as the multiple driest years over
that same period. These years have been chosen because they represent the timing of the
least amount of available water resources from the SWP, a major source of
Metropolitan's supply.
Over the 20 year period beginning in 2010 and ending in 2030, Metropolitan projects a
0.5 percent decrease in available supply during an average year, a 4.5 percent increase
during a single dry year, and a 3.8 percent increase during the third year of the multiple
dry year period. The increased available supplies during drought year scenarios are
primarily due to increased contract allotments of in-basin storage as well as a number of
supplies under development.
In its draft report, Metropolitan also projects an increase in member agency demands.
Specifically, they project a 10.2 percent increase over the same 20-year period in the
average demand, an 8.5 percent increase during the single dry year scenario, and an 8.9
percent increase during the multiple dry year scenario. However, in all cases, the
projected regional increase in demands by member agencies are offset by available
surpluses in the Metropolitan supply.
1
Table 4.2-1 summarizes Metropolitan's current imported supply availability projections
for average and single dry years over the 20-year period beginning in 2010 and ending in
2030. Based on these projections, Metropolitan will be able to meet all of its projected
single dry year service area demands through the year 2030.
4-15 Final Draft 317106
Tustin Water Services
Section 4 2005 Urban Water Management Plan
Table 4.2-1
Metropolitan Regional Imported Water Supply Reliability Projections
for Average and Single Dry Years 54
(AFY)
Row Region Wide Projections . 2010` 2015 2020 2025 2030
Supply Information ,
Projected SupplyA During an
Average Year I
2,668,000 2,600,000 2,654,000 2,654,000 2,654,000'
-
B Projected Supply During a
Single Dry Yearlll 2,842,000 3,033;000 3,002,000 2,970,000 2,970,000
Projected Supply During a
C= B/A Single Dry Year as'a% of 106.5 116.7 113.1 111.9 111.9
Average Supply
Demand Information
Projected Demand During an
D 2,040,000 2,053,000 1,989,000 2,115,000 2,249,000
Average Year
E Projected Demand During a Single Dry Year 2,293,000 2,301,000 2,234,000 2,363,000 2,489,000
Projected Demand During a
F =E/D Single Dry Year as a% of 112.4 112.0 112.3 111.7 110.7
Average Demand
Surplus Information
G =A-D Projected Surplus During an 628,000 547,000 665,000 539,000 405,000
Average Year
H = B-E Projected Surplus During a 549,000 732,000 768,000 607,000 481,000
Single Dry Year ,
Additional Supply Information
Projected Supply During an
Average Year as a% of
[ =A/D 130.8 - 126.6 133:4 125.5 118.0
Demand During an Average
Year ,
Projected Supply During an
Average Year as a% of
J=AE A- 116.3 113.0 118.8 112.3 106.6
Demand During a Single Dry ,
Year
Projected Supply During a
K=B/E Single Dry Year as a'% of 123.9- 131.8 ` 134:3 125.6 119.3
Single Dry Year Demand
(including surplus)
P] Projected supplies include current supplies and supplies under development,but are limited by MWD's ,
1.25 MAF allotment to Colorado River Water;data obtained from MWD September 2005 Draft
RU WMP supply/demand projections
sn Metropolitan Draft Regional UWMP September 2005
1
Final Draft 317106 4-16
Tustin Water Services
2005 Urban Water Management Plan Section 4
Table 4.2-2 summarizes Metropolitan's current imported supply availability projections
over the 20-year period beginning in 2010 and ending in 2030 for average and multiple
dry year scenarios. When reviewing Table 4.2=2, it is important to note that Metropolitan
is projecting a surplus of supply for all multiple dry year scenarios through 2030.
The findings in this plan were derived based upon Metropolitan's September 2005 Draft
Regional UWMP. These figures can be interpolated to project Metropolitan's ability to
meet a specified demand expressed in terms of a percentage of average demand and
supply availability. When viewed on a regional basis, some member agency demands will
exceed these averages, while others will fall below the stated averages. However, when
viewed from the regional perspective, it is reasonable to assume that these averages will
apply to all local water purveyors.
Although a less conservative assumption might suggest surplus water supplies not used
by agencies experiencing low or no growth may be freed up for use by those water
purveyors experiencing more growth, this is not borne out by the overall Metropolitan
supply and demand picture. In fact, Metropolitan is projecting a 19.4 percent increase in
total demand (including local supplies) over its entire service area between 2005 and
I 2030 (4,115,700 AFY to 4,914,000 AFY)55 compared with a 20.9spercent increase in
population over the same period of (18,233,700 to 22,053,200)5 . In other words,
Metropolitan's projected increase in demand roughly parallels its projected increase in
population.
I
I
ss Table A.1-5 from MWD September 2005 Draft RUWMP
sn Table A.1-2 from MWD September 2005 Draft RUWMP
I 4-17 Final Draft 317106
Tustin Water Services
Section 4 2005 Urban Water Management Plan
Table 4.2-2
Metropolitan Regional Imported Water Supply Reliability Projections
for Average and Multiple Dry Years5
(in AFY)
Row Region Wide Projections 2010 2015 2020 2025 2030' '
Supply Information
Projected Supply During an
Average Year "
A [11 2,668,000 2,600,000 2,654,600 2,654,000 '2,654,000
B'' Projected Supply During Year 3 of a Multiple Dry Year Period* 2,619,000 2,776,600 2,741,000 21719,000 2;719,000
Projected Supply During Year 3
C = B/A of a Multiple Dry Year as a% of 98.2 106.8 103.3 102.4 102.4
Average Supply
Demand Information
D Projected Demand During an 2,040,000 2,053,000 1,989,000 2,115,000 2,249,000
Average Year
E Projected Demand During Year 3 2,376,000 2,389,000 2,317,000 2,454,000 2,587,000
of a Multiple Dry Year Period["
Projected Demand During Year 3
F=E/D of a Multiple Dry Year Period as 116.5 116.4 116.5 116.0 115.0
a% of Average Demand
Surplus Information
G— A-D Projected Surplus During an 549,000 732,000 768,000 607,000 481,000 ,
Average Year
H= B-E Projected Surplus During Year 3 243,000 377,000 424,000 265,000 132,000
of a Multiple Dry Year Period
Additional.Supply Information -
Projected Supply During an
I=A/D Average Year as a%of Demand 130.8 126.6 133.4 125.5 118.0
During an Average Year
Projected Supply During an
J = A/E Average Year as a%of Demand 112.3 108.8 114.5 108.1 102.6
During Year 3 of a Multiple Dry
Year
Projected Supply During a
Multiple Dry Year as a% of
K B/E 110.2 116.2 118.3 110.7 105.1
Multiple Dry Year Demand
(including surplus)
I�1 Projected supplies include current supplies and supplies underdevelopment,but are limited by MW D's
1.25 MAF allotment to Colorado River Water, data obtained from MWD September 2005 final draft
RU WMP.
t2] MWD only projects demands for year 3 of a multiple dry year period
s'Metropolitan Water District of Southern California,Regional UWMP,September 2005 Draft.
Final Draft 317106 4-18
Tustin Water Services
2005 Urban Water Management Plan Section 4
In addition to Metropolitan's Regional UWMP, MWDOC has also prepared a draft 2005
UWMP for the Orange County region and has also held a series of workshops for its
member agencies including direct Metropolitan member agencies in Orange County.
MWDOC is also looking at the 1922 though 2004 period and has adopted the same
average year scenario as Metropolitan; however, they differ in the selection of a single
' dry year and the multiple dry year scenario. MWDOC has chosen to determine these
years based on hydrologic records for Orange County rather than on the State Water
Project availability. That methodology has resulted in the selection of 1961 as the single
driest year on record and the years 1959 through 1961 as the multiple dry years.
In viewing its entire service area, MWDOC projects single dry year demands that are
105.5 percent of normal and three multiple dry years demands that are 106.7, 103.7 and
105.5 percent of normal. These same factors are representative of all of Orange County
' and will be applied to project the City's demands in single and multiple dry years.
Prior to proceeding with future water supply and demand projections, it is first necessary
to establish a base water year from which to estimate demands over the next 25 years.
Actual demand during 2005 was 11,449 AF. Additional data provided by the City
suggests the number of water service connections will increase from 13,945 in 2005 to
14,294 in 2010 (a 2.5 percent increase) and then stabilize at that number for the following
20 year period (through 2030). Water demand will therefore be assumed to increase in a
' parallel track with the number of water connections. This estimated increase in water
demand is compared with Metropolitan's estimated increase in supply over the same
period in Table 4.2-3. The major point reflected in Table 4.2-3 is that Metropolitans (and
' therefore MWDOC's and EOCWD's) will greatly exceed Tustin's demands over the next
25 years.
1
4-19 Final Draft 317106
Tustin Water Services
Section 4 2005 Urban Water Management Plan
Table 4.2-3
Comparison Between MWD Supply Availability and
Tustin Water Services Demand During an Average Year
Pioiecti2015 —202(l 2025 �:,,2030-
.olfi
Tustin Projected Increase in
A Demand During an Average 102.5 102.5 102.5 102.5 102.5
Year as a% of 2005 Average
Demand[l]
—MWD Projected Increase in
Regional Supply Availability
B During an Average Year as a 104.9 102.2 104.4 104.4 104.4
% of 2005 Average Year[21
MMM Projected Regional
Supply During an Average
(from Row Year as a% of Demand 130.8 126.6 133.4 125.5 118.0
1, Table During all Average Year[31
4.2-1)
Percentage Difference
Between Growth in MWD
Supply Availability (including
D=(C-A) surplus supply) During an 28.3 24.1 30.9 23.0 15.5
Average Year Compared with
Growth in Tustin Demand
During an Average Year
[11 Increase in demand based on City's projected increase in future water service connections.
[21 MWD did not include any supply projections for 2005 in its final draft RUWMP supply/demand tables
released in September 2005. The 2005 supply projection released in May 2005 (2.542,800 AFY) is
therefore used as a base year for calculating the increase in supply availability in future years as
compared with 2005 average year supply.
[3]Values extracted from Table 4.2-1.
Tables 4.2-4 through 4.2-10 compare current and projected water supplies and demands
in normal, single dry year and multiple dry year scenarios. The results displayed in these
tables indicate that the City's will have no problems meeting its demands in average,
single dry, and multiple dry years through 2030.
The source of the data in Tables 4.2-4 through 4.2-10 is footnoted in each table. Single
and Multiple dry year supplies and demands are based largely on the data extracted from
the normal year table (4.2-4).
Final Draft 317106 4-20
Tustin Water Services
2005 Urban Water Management Plan Section 4
Table 4.2-4
Tustin Water Services
Projected Water Supply and Demand
Normal Water Year
' (AFY -All projections rounded to nearest 10 AF)
Water=Sources: r _ 2010 -2015 2020 '2625 - 2030
Supply Normal Water Years
Projected Supply During an Average
Year as a % of Demand During an 130.8 126.6 133.4 125.5 118.0
Average Yearl']
Imported[2) 650 630 670 630 590
Local (Treated Groundwater)[31 4,000 4,000 4,000 4,000 4,000
Local (Clear Groundwater)['] 8,220 8,220 8,220 8,220 8,220
Total Supply 12,870 12,850 12,890 12,850 12,810
% of Normal Year 100.0 100.0 100.0 100.0 100.0
Demand
Imported[21 500 500 500 500 500
Local (Treated Groundwater)['] 4,000 4,000 4,000 4,000 4,000
Local (Clear Groundwater)[4] 7,240 7,240 7,240 7,240 7,240
Total Demand[5] 11,740 11,740 11,740 11,740 11,740
% of Year 2005 Demand (11,450 AF) 102.5 102.5 102.5 102.5 102.5
Supply/ Demand Difference 1,130 1,110 1,150 1,110 1,070
Difference as % of Supply 8.8 8.6 8.9 8.6 8.4
Difference as % of Demand 9.6 9.5 9.8 9.5 9.1
[1]From Table 4.2-1, Row I.
[2]Imported water supply=(imported water demand)x(MWD Projected Supply Available During an Average Year as a%
' of Demand During an Average Year(from Table 4.2-1, Row I); Imported demand = 500 AF based on City provided
estimate; however, it should be noted that significant additional imported supplies may also be available from EOCWD
[3] Local Treated Groundwater supply is limited by treated well capacity of 4,000 AFY. Local treated Groundwater
demand is estimated to equal maximum treatment capacity of 4,000 AFY.
[4]Local Clear Groundwater supply is estimated=70%of Total Demand(based on BPP of 70%). Clear groundwater well
demand = Total Demand - Imported Demand - treated groundwater well demand, not to exceed 70% of the Total
' Demand.
[5]Total Demand =2005 (11,450 AF)escalated at 0.5% per year growth in demand factor for rive years (to 2010)based
on projected growth estimate provided by City. No growth in demand is anticipated after 2010 as City approached full
build-out.
4-21 Final Draft 317106
Tustin Water Services ,
Section 4 2005 Urban Water Management Plan
Table 4.2-5
Tustin Water Services '
Projected Water Supply and Demand
Single Dry Water Year ,
(AFY-All projections rounded to nearest 10 AF)
Water Sources- 2010 1 2015 T 2020 2025 ` 2030' 1
Supply Single Dry Years
MWD Projected Supply Available '
During an Average Year as a % of 116.3 113 118.8 112.3 106.6
Demand During a Single Dry Yearltl
MWD Projected Supply Available
During a Single Dry Year as a % of
Single Dry Year Demand (including 123.9 131.8 134.3 125.6 119.3
surplus)121 ,
Imported"' 810 830 900 790 700
Local (Treated Groundwater)I41 4,000 4,000 4,000 4,000 4,000
Local (Clear Groundwater)161 8,670 8,670 8,670 8,670 8,670
Total Supply 13,480 13,500 13,570 13,460 13,370 ,
Normal Year Supplyl61 12,870 12,850 12,890 12,850 12,810
% of Normal Year 104.7 105.1 105.3 104.7 104.4
Demand
Importedlal 500 500 500 500 500
Local (Treated Groundwater)141 4,000 4,000 4,000 4,000 4,000
Local (Clear Groundwater)I5l 7,890 7,890 7,890 7,890 7,890
Total Demand[71 12,390 12,390 12,390 12,390 12,390
Normal Year Demand'] 11,740 11,740 11,740 11,740 11,740
% of Normal Year Demand 105.5 105.5 105.5 105.5 105.5
% of Year 2005 Demand (11,450 AF) 108.2 108.2 108.2 108.2 108.2 ,
Supply/ Demand Difference 1,090 1,110 1,180 1,070 980
Difference as % of Supply 8.1 8.2 8.7 7.9 7.3 ,
Difference as % of Demand 8.8 9.0 9.5 8.6 7.9
[1]From Table 4.2-1, Row J
[2]From Table 4.2-1, Row K(includes MWD surplus supplies) ,
[3]Available Imported supply is estimated to equal MWD's September 2005 Draft RUWMP projected available supplies
including surplus supplies = (normal year import supply) x (MWD projected supply as a % of the single dry year
demand); Imported demand is estimated to remain constant at 500 AFY based on City provided estimate; however, it ,
should be noted that significant additional imported supplies may also be available from EOCWD
[4] Local Treated Groundwater supply is limited by treated well capacity of 4,000 AFY. Local treated Groundwater
demand is estimated to equal maximum treatment capacity of 4,000 AFY.
[5]Local Clear Groundwater supply is estimated=70%of Total Demand(based on BPP of 70%).Clear groundwater well ,
demand = Total Demand - Imported Demand - treated groundwater well demand, not to exceed 70% of the Total
Demand.
[6]Normal year supplies and demands and taken from Table 4.2-4
[7] Total Demand = (normal year demand) x (105.5% single dry year demand developed by MWDOC based on ,
hydrologic analysis of 1922-2004 period and applicable to entire Orange County region)
Final Draft 317106 4-22
Tustin Water Services
2005 Urban Water Management Plan Section 4
Table 4.2-6
Tustin Water Services
Projected Water Supply and Demand
Multiple Dry Water Years 2006-2010
(AFY-All projections rounded to nearest 10 AF)
�' ,Water�Sources'. - 2006 2007-' _' 2008 2009 2010
Supply Normal Years Dry Years
MWD Projected Supply During a :
Multiple Dry Year as a % of Average 798.2 98.2 98,2
Suppl It]
Imported 121 1,520 1,480 650 640 640
Local (Treated Groundwater)['] 4,000 4,000 4;000 4,000 4,000
Local (Clear Groundwater)['] 7,370 7,400 8,680 8,486 8;670
Total Supply 12,890 12,880 13,330._ 13,120 13,310
Normal Year Supply 141 12,890 12,880 12,880 , 12,870 1 12,870
% of Normal Year 100.0 100.0 -103:5 101.9 103.4
Demand
MWD Projected Multiple Dry Year
Demand as % of Normal Year[51 116.5 116.5 116.5`
Imported 121 500 500 500 -500 500
Local (Treated Groundwater)I'] 4,000 4,000 4,000 4,000 4,000
Local (Clear Groundwater)['] 7,010 7,070 . 7,900 7,610` 7,890
Total Demand 1 11,510 11,570 12;400 12,110 12,390
Normal Year Demand161 11,510 11,570 1.1,620 11;680 11,740
% of Normal Year 100.0 100.0 106.7 103.7 105.5
' % of Year 2005 Demand (11,450 AF) 100.5 101.1 108.3 105.8 108.2
Supply/ Demand Difference 1,380 1,310 930 1,010 - 920
Difference as % of Supply 10.7 10.2 7.0 7.7 6.9
Difference as % of Demand 12.0 11.3 7.5 8.3 7.4
' [1]From Table 4.2-2, Row C
[2] Imported supply=(imported supply interpolated from 2005 demand data and Table 4.2-4 data)x(escalation factor
from Table 4.2-2, Row C. Imported demand is estimated to remain constant at 500 AFY based on City provided
estimate; however, it should be noted that significant additional imported supplies may also be available from
EOCWD
[3] Local Treated Groundwater supply is limited by treated well capacity of 4,000 AFY. Local treated Groundwater
demand is estimated to equal maximum treatment capacity of 4,000 AFY.
[4] Local Clear Groundwater supply is estimated = 70% of Total Demand (based on BPP of 64%for 2006 and 2007
' and 70% for 2008-2010). Clear groundwater well demand = Total Demand - Imported Demand - treated
groundwater well demand, not to exceed 64%or 70%of the Total Demand for previously referenced years.
[5]Normal Year Supply interpolated from 2005 demand data and from Table 4.2-4 projected data.
[6] From Table 4.2-2, Row F; In its September 2005 Draft UWMP Multiple Dry Year Projections, MWD only projected
demands for Year 3, therefore Years 1 and 2 are assumed to equal Year 3 demand; these percentages are
presented only to reflect the fact that the City's demand is well below the factor presented in the table, e.g., 2010
multiple dry year demand is 105.5%as opposed to 116.5%
[7]Total Demand estimated base on 0.5%/year growth factor beginning in 2005 for all normal years; total demand for
multiple dry years = (Interpolated Normal Year Demand) x(106.7%, 103.7% or 105.5%Year 1, 2 and 3 multiple
dry year demand factors developed by MWDOC based on hydrologic analysis of 1922-2004 period and applicable
to entire Orange County region.
[8]Normal Year Demand interpolated from 2005 demand and Table 4.2-4 projected demands
4-23 Final Draft 317106
Tustin Water Services
Section 4 2005 Urban Water Management Plan
Table 4.2-7
Tustin Water Services
Projected Water Supply and Demand
Multiple Dry Water Years 2011-2015
(AFY-All projections rounded to nearest 10 AF)
S, �01,1':��_,,�,,20112 2073 . '2014' 20 5''
water, 9prces, 1
Supply Normal Years -Dry Years
MWD Projected Supply During a
Multiple Dry Year as a % of Average 106.8 106.8 106.8
Supply(l)
Imported(21 650 640 680 680 676
Local (Treated Groundwater)['] F4,OOO 4,000 4,000 4,000 4,000
Local (Clear Groundwater)j4I 8,220 8,220 8,770 8,520 8,670
Total Supply 12,870 12,860 13,450 13,200 13,340
Normal Year Supply['] 12,870 12,860 -12,860 12,850 -12,850
% of Normal Year 100.0 100.0 104.6 102:7 103.8
Demand
MWD Projected Multiple Dry Year
Demand as % of Normal Year[61 116.4 116.4 116.4
Imported[21 500 500 500 500 500-
Local (Treated Groundwater)[31 4,000 4,000 4,000 4,000 4,000
Local (Clear Groundwater)['] 7,240 7,240 8,030 7,670 7,890
Total Demand('] 11,740 11,740 _12,530 12,170 12,390
Normal Year Demands] 11,740 11,740 11,740 11,740 11,740
% of Normal Year 100.0 100.0 106.7 103.7 105.5
% of Year 2005 Demand (11,450 AF) 102.5 102.5 - 109.4 106.3 108.2
Supply/ Demand Difference 1,130 1,120 920 1,030- 950
Difference as % of Supply 8.8 8.7 6.8- - 7.8 71
Difference as % of Demand F_-9.6 9.5 7.3
[1]From Table 4.2-2, Row C
[2] Imported supply = (imported supply interpolated from Table 4.2-4) x (escalation factor from Table 4.2-2, Row C.
Imported demand is estimated to remain constant at 500 AFY based on City provided estimate; however, it should
be noted that significant additional imported supplies may also be available from EOCWD.
[3] Local Treated Groundwater supply is limited by treated well capacity of 4,000 AFY. Local treated Groundwater
demand is estimated to equal maximum treatment capacity of 4,000 AFY.
[4] Local Clear Groundwater supply is estimated = 70% of Total Demand (based on BPP of 70%). Clear groundwater
well demand = Total Demand - Imported Demand - treated groundwater well demand, not to exceed 70% of the
Total Demand.
[5]Normal Year Supply interpolated from Table 4.2-4
[6] From Table 4.2-2, Row F; In its September 2005 Draft UWMP Multiple Dry Year Projections, MWD only projected
demands for Year 3, therefore Years 1 and 2 are assumed to equal Year 3 demand; these percentages are
presented only to reflect the fact that the City's demand is well below the factor presented in the table, e.g., 2010
multiple dry year demand is 105.5%as opposed to 116.4%
[7]Total Demand of 11,740 AFY extracted from Table 4.2-4 for all normal years; total demand for multiple dry years
(Normal Year Demand of 11,740 AFY) x (106.7%, 103.7% or 105.5% Year 1, 2 and 3 multiple dry year demand
factors developed by MWDOC based on hydrologic analysis of 1922-2004 period and applicable to entire Orange
County region.
[8] Normal Year Demand for all years after 2010= 11,740 AFY
Final Draft 317106 4-24
Tustin Water Services
2005 Urban Water Management Plan Section 4
1
Table 4.2-8
' Tustin Water Services
Projected Water Supply and Demand
Multiple Dry Water Years 2016-2020
' (AFY -All projections rounded to nearest 10 AF)
11 , r` =Water-'Sources:` . _ 2016,, 1' 2017 20.18 1 2019 - 2020
Supply Normal Years Dry Years
' MWD Projected Supply During a
Multiple Dry Year as a % of Average 103.3 103.3 103.3
Suppl (t]
1
Imported l21 640 650 680 _ 680 690
Local (Treated Groundwater)131 4,000 4,000 4;000 4,000 4,000
' Local (Clear Groundwater)131 8,220 8,220 8;770 8,520 8,670
Total Supply 12,860 12,870 13,450 13,200 13,360
Normal Year Supply[4] 12,860 12,870 12,870 12,880 12,890
% of Normal Year 100.0 100.0 104.5 102.6 1016
Demand
MWD Projected Multiple Dry Year
Demand as % of Normal Yearly) 116.5 116.5 116.5
-Imported l21 500 500 500 500 500
Local (Treated Groundwater)['] 4,000 4,000 4;000 4,000 4,000
Local (Clear Groundwater)[3] 7,240 7,240 8,030 7,670 7,890
Total Demand 11,740 11,740 12,530 12,170 12,390
Normal Year Demand[61 11,740 11,740 11,740 11,740 11,740 '
% of Normal Year 100.0 100.0 '' . 106.7-- --.103.7. 105.5
% of Year 2005 Demand (11,450 AF) 102.5 102.5 109.4 10&3 _- 108.2
Supply/ Demand Difference 1,120 1,130 920 1,030 970
Difference as % of Supply 8.7 8.8 6.8 7.8 7.3
Difference as % of Demand 9.5 9.6 _ _ _7.3 8.5 7._8'
[7]From Table 4.2-2,Row C
' [2] Imported supply = (imported supply interpolated from Table 4.2-4) x (escalation factor from Table 4.2-2, Row C.
Imported demand is estimated to remain constant at 500 AFY based on City provided estimate; however, it should be
noted that significant additional imported supplies may also be available from EOCWD
[3]Local Treated Groundwater supply is limited by treated well capacity of 4,000 AFY. Local treated Groundwater demand
is estimated to equal maximum treatment capacity of 4,000 AFY.
[4] Local Clear Groundwater supply is estimated = 70% of Total Demand (based on BPP of 70%). Clear groundwater well
demand = Total Demand - Imported Demand - treated groundwater well demand, not to exceed 70% of the Total
Demand.
[5]Normal Year Supply interpolated from Table 4.2-4
[6] From Table 4.2-2, Row F; In its September 2005 Draft DWMP Multiple Dry Year Projections, MWD only projected
demands for Year 3, therefore Years 1 and 2 are assumed to equal Year 3 demand;these percentages are presented
' only to reflect the fact that the City's demand is well below the factor presented in the table,e.g.,2010 multiple dry year
demand is 105.5%as opposed to 116.5%
[7] Total Demand of 11,740 AFY extracted from Table 4.2-4 for all normal years; total demand for multiple dry years =
(Normal Year Demand of 11,740 AFY)x(106.7%, 103.7%or 105.5%Year 1,2 and 3 multiple dry year demand factors
developed by MWDOC based on hydrologic analysis of 1922-2004 period and applicable to entire Orange County
region.
[8]Normal Year Demand for all years after 2010=11,740 AFY
4-25 Final Draft 317106
Tustin Water Services
Section 4 2005 Urban Water Management Plan
Table 4.2-9
Tustin Water Services ,
Projected Water Supply and Demand
Multiple Dry Water Years 2021-2025
(AFY - All projections rounded to nearest 10 AF) ,
5 ,WaferSoorces a 'x2021` 2022 :x2023= - `<2024
Supply Normal Years Dry Years
MWD Projected Supply During a '
Multiple Dry Year as a % of Average 102.4 102.4 102.4
Suppl 111
Imported 121 660 650 660 650 650
Local (Treated Groundwater)[31 4,000 4,000 4,000 4,000 4,000
Local (Clear Groundwater)13f 8,220 8,220 8,770 8,520 8,670
Total Supply 12,880 12,870 13,430 13,170 13,320 '
Normal Year Supply 141 12,880 12,870 12,870 12,860 12,850
% of Normal Year 100.0 100.0 104.4 102.4 103.7 1
Demand
MWD Projected Multiple Dry Year
Demand as % of Normal Year[51 116.0 116.0 116.0
imported 121 500 500 500 500 500
Local (Treated Groundwater)[31 4,000 4,000 4,000 4,000 =4,000 ,
Local (Clear Groundwater)131 7,240 7,240 8,030 _ 7,670 7,890
Total Demand 11,740 11,740 12,530 12,170 12,390
Normal Year Demand[61 11,740 11,740 11;740 11,740 11,740 ,
% of Normal Year 100.0 100.0 106.7 103.7 _105.5
% of Year 2005 Demand (11,450 AF) 102.5 102.5 109 4 106.3 108.2 t
Supply/ Demand Difference 1,140 1,130 900 1,000 930
Difference as % of Supply 8.9 8.8 6.7 7.6 7.0 ,
Difference as % of Demand 9.7 9.6 7.2 8.2 7.5
[1]From Table 4.2-2, Row C
[2] Imported supply= (imported supply interpolated from Table 4.2-4)x(escalation factor from Table 4.2-2, Row C. Imported ,
demand is estimated to remain constant at 500 AFY based on City provided estimate; however, it should be noted that
significant additional imported supplies may also be available from EOCWD
[3]Local Treated Groundwater supply is limited by treated well capacity of 4,000 AFY. Local treated Groundwater demand is
estimated to equal maximum treatment capacity of 4,000 AFY. ,
[4] Local Clear Groundwater supply is estimated = 70% of Total Demand (based on BPP of 70%). Clear groundwater well
demand = Total Demand - Imported Demand - treated groundwater well demand, not to exceed 70% of the Total
Demand.
[5]Normal Year Supply interpolated from Table 4.2-4 '
[6] From Table 4.2-2, Row F; In its September 2005 Draft LV/MP Multiple Dry Year Projections, MWD only projected
demands for Year 3, therefore Years 1 and 2 are assumed to equal Year 3 demand; these percentages are presented
only to reflect the fact that the City's demand is well below the factor presented in the table,e.g., 2010 multiple dry year ,
demand is 105.5%as opposed to 116.0!
[7] Total Demand of 11,740 AFY extracted from Table 4.2-4 for all normal years; total demand for multiple dry years =
(Normal Year Demand of 11,740 AFY)x(106.7%, 103.7% or 105.5% Year 1, 2 and 3 multiple dry year demand factors
developed by MWDOC based on hydrologic analysis of 1922-2004 period and applicable to entire Orange County region. ,
[8] Normal Year Demand for all years after 2010= 11,740 AFY
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Table 4.2-10
Tustin Water Services
Projected Water Supply and Demand
Multiple Dry Water Years 2026-2030
1 (AFY-All projections rounded to nearest 10 AF)
. "WaterSou,rces'T v ' ,2026' 2027 2028 " -2029 2030
Supply Normal Years Dry Years
MWD Projected Supply During a
Multiple Dry Year as a % of Average 102.4 102.4 102.4
Suppl 11)
Imported[21 620 610 620 610 600
Local (Treated Groundwater)[31 4,000 4,000 4;000 4,000 4,000
' Local (Clear Groundwater)[') 8,220 8,220 8,770 8,520 8,670
Total Supply 12,840 12,830 13,390 13,130 13,270
Normal Year Supply(41 12,840 12,830 12,830 ` 12,820 `12,810
% of Normal Year 100.0 100.0 104.4 102.4 103.6
Demand - -
MWD Projected Multiple Dry Year
Demand as % of Normal Year[5) 115.0 115.0 115.0
imported[21 500 500 500 500 500
Local (Treated Groundwater)['] 4,000 4,000 4,000 4,000 4,000
Local (Clear Groundwater)[3) 7,240 7,240 8,030 7,670 7;890
Total Demand 11,740 11,740 12,530 12,170 12,390
Normal Year Demand[6] 11,740 11,740 11,740 . 11,740 11,740
% of Normal Year 100.0 100.0 106.7 103.7 105.5
% of Year 2005 Demand (11,450 AF) 102.5 102.5 109.4 106.3 108.2
Supply/ Demand Difference 1,100 1,090 860 -960 - 880
Difference as % of Supply 8.6 8.5 6.4 7.3 6.6
Difference as % of Demand 9.4 9.3 , 6.9 - 7.9 7.1
[1]From Table 4.2-2, Row C
' [2] Imported supply = (imported supply interpolated from Table 4.2-4) x (escalation factor from Table 4.2-2, Row C.
Imported demand is estimated to remain constant at 500 AFY based on City provided estimate; however, it should be
noted that significant additional imported supplies may also be available from EOCWD.
[3] Local Treated Groundwater supply is limited by treated well capacity of 4,000 AFY. Local treated Groundwater
demand is estimated to equal maximum treatment capacity of 4,000 AFY.
[4] Local Clear Groundwater supply is estimated = 70% of Total Demand (based on BPP of 70%). Clear groundwater
well demand=Total Demand-Imported Demand-treated groundwater well demand, not to exceed 70%of the Total
Demand.
[5]Normal Year Supply interpolated from Table 4.2-4
[6] From Table 4.2-2, Row F; In its September 2005 Draft UWMP Multiple Dry Year Projections, MWD only projected
demands for Year 3, therefore Years 1 and 2 are assumed to equal Year 3 demand; these percentages are
presented only to reflect the fact that the City's demand is well below the factor presented in the table, e.g., 2010
multiple dry year demand is 105.5%as opposed to 115.0%
[7] Total Demand of 11,740 AFY extracted from Table 4.2-4 for all normal years; total demand for multiple dry years =
(Normal Year Demand of 11,740 AFY) x (106.7%, 103.7% or 105.5% Year 1, 2 and 3 multiple dry year demand
factors developed by MWDOC based on hydrologic analysis of 1922-2004 period and applicable to entire Orange
County region.
[8]Normal Year Demand for all years after 2010= 11,740 AFY
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4.3 VULNERABILITY OF SUPPLY TO SEASONAL OR CLIMATIC
SHORTAGE i
TWS's climate is a semi-arid environment with mild winters, warm summers and
moderate rainfall, consistent with coastal southern California. The general region lies in i
the semi-permanent high-pressure zone of the eastern Pacific. As a result, the climate is
mild, tempered by cool sea breezes. The usually mild climatological pattern is interrupted i
infrequently by periods of extremely hot weather, winter storms, or Santa Ana winds. The
average annual temperature is 68 degrees Fahrenheit in January to 84 degrees Fahrenheit
in July. Precipitation is typically 13 inches, occurring mostly between November and i
April.
Climatological data in California has been recorded since the year 1858. During the i
twentieth century, California has experienced three periods of severe drought: 1928-34,
1976-77 and 1987-91. The year 1977 is considered to be the driest year of record in the i
Four Rivers Basin by DWR. These rivers flow into the San Francisco Bay Delta and are
the source of water for the SWP.
Southern California and, in particular, Orange County sustained few adverse impacts i
from the 1976-77 drought, due in large part to the availability of Colorado River water i
and groundwater stored in the Lower Santa Ana Groundwater Basin. But the 1987-91
drought created considerably more concern for southern California and Orange County.
As a result, TWS is vulnerable to water shortages due to its climatic environment and i
seasonally hot summer months. While the data shown in Tables 4.2-4 through 4.2-10
identify water availability during single and multiple dry year scenarios, response to a i
future drought would follow the water use efficiency mandates of Metropolitan's Water
Surplus and Drought Management (WSDM) Plan, along with implementation of the i
appropriate stage of the TWS's Water Conservation Program. These programs are more
specifically discussed in Section 7.
i
4.4 PLANNED WATER SUPPLY PROJECTS AND PROGRAMS TO MEET i
PROJECT WATER USE
4.4.1 Tustin Water Services Projects i
TWS projects that water demand will not increase 2010 to 2030 due to full build out of
the service area combined with continued water conservation. Potentially, TWS could i
purchase all the water it needs to serve its customers from Metropolitan through
MWDOC and EOCWD. However, TWS has planned water infrastructure improvements
to maximize groundwater production in the future. New water supply sources will be i
developed primarily to better manage the Lower Santa Ana Groundwater Basin resource
and to replace or upgrade inefficient wells, rather than to support population growth and i
new development.
1
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TWS has developed a water system capital improvement program (CIP) to minimize the
dependence on imported water supply and to foster a program to increase the
groundwater quality in the aquifer underlying the service area. TWS's goal is to develop
local groundwater sources that when combined with treated groundwater supplies will
provide 100 percent of the required supply within the next 25 years. Together with
Metropolitan's Local Resource Program (Groundwater Recovery), TWS is implementing
' a groundwater development program to utilize existing wells and drill additional wells to
make use of the local groundwater supply. TWS has seven existing untreated-
groundwater wells.
As part of the CIP, the following reservoirs will have major to minor retrofits: (1) the
existing Rawlings Reservoir will be replaced at the same sites to increase the total service
area system storage capacity; (2) the Foothill and Simon Ranch Reservoirs will have
structural rehabilitation, including replacement of the Simon Ranch Booster Pump
Station; and (3) the John Lyttle and Newport Avenue Reservoirs will have minor
rehabilitation.
The CIP also addresses distribution system enhancements by resizing of the pipeline
system to distribute water throughout the system to meet all demand conditions including
1 peak hour demand and maximum day demand plus fire flow.
4.4.2 Regional Agency Projects
Since the City's imported water comes from the SWP and the Colorado River through
EOCWD, the projects implemented by Metropolitan, MWDOC, and EOCWD to secure
their water supplies have a direct effect on the TWS water supply. In addition, OCWD's
planned projects and programs for groundwater and recycled water will also impact
TWS.
Metropolitan Water District of Southern California
Metropolitan is implementing water supply alternative strategies for the region andon
behalf of their member agencies to insure available water in the future. Some of the
strategies identified in Metropolitan's 2005 UWMP include:
• Conservation
• Water recycling and groundwater recovery
• Storage and groundwater management programs within the Southern
California region
• Storage programs related to the State Water Project and the Colorado River
• Other water supply management programs outside of the region
' Metropolitan has made investments in conservation, water recycling, storage, and supply
that are all part of Metropolitan's long-term water management strategy. Metropolitan's
approach to a long-term water management strategy was to develop an Integrated
Resource Plan that depended on many sources of supply. Metropolitan's implementation
1
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1
approach for achieving the goals of the Integrated Resource Plan Update is summarized
in Table 4.4.2-1. A comprehensive description of Metropolitan's implementation
approach is contained in their 2003 report on Metropolitan water supplies "A Blueprint
for Water Reliability" as well as their 2005 Regional Urban Water Management Plan. A
brief description of the various programs implemented by Metropolitan is also included ,
following Table 4.4.2-1.
Table 4.4.2-1 ,
Metropolitan Integrated Resource Plan Update Resources Status
Target "`-' u 5 Programs and_Status
• Conservation Current
- Conservation Credits Program '
Residential;Non-residential Landscape Water Use
Efficiency,, Commercial, Industrial, and Institutional
Programs '
- Grant Programs
In Development or Identified
Innovative Conservation Program ,
• Recycling Current
• GW Recovery - LRP Program
• Desalination In Development or Identified
- Additional LRP Requests for Proposals
- Seawater Desalination Program ,
Innovative Supply Program
• In Region Dry-Year Current ,
Surface Water - Diamond Valley Reservoir, Lake Mathews, Lake Skinner
Storage - SWP Terminal Reservoirs(Monterey Agreement)
• In Region Current '
Groundwater - North Las Posas(Eastern Ventura County)
Conjunctive Use - Cyclic Storage
- Replenishment Deliveries ,
- Proposition 13 Programs(short listed)
In Development or Identified
- Raymond Basin GSP
- Proposition 13 Programs(wait listed)
- Expanding existing programs
- New groundwater storage programs ,
• SWP Current
- SWP Deliveries
- San Luis Carryover Storage(Monterey Agreement)
- SWP Call Back with DWCV Table A transfer
In Development or Identified
- Sacramento Valley Water Management Agreement ,
- CALFED Delta Improvement Program (Phase 8
Agreement)
• Colorado River Current ,
Base Apportionment
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Target _ Programs and"Status
_ .
Aqueduct a- IID/Metropolitan Conservation Program
- Coachella and All American Canal Lining Programs
- PVID Land Management Program
In Development or Identified
- Lower Coachella Storage Program
- Hayfield Storage Program
- Chuckwalla Storage Program
Storage in Lake Mead
• CVP/SWP Storage Current
and Transfers Arvin Edison Program
• Spot Transfers and - Semitropic Program
Options _ San Bernardino Valley MWD Program
Kern Delta Program
In Development or Identified
= Mojave Storage Program
Other Central Valley Transfer Programs
Conservation Target
Metropolitan's conservation policies and practices are shaped by Metropolitan's
Integrated Resource Plan and the California Urban Water Conservation Council
Memorandum of Understanding Regarding Water Conservation in California.
Recycled Water, Groundwater Recovery, and Desalination Target
Metropolitan supports the use of alternative water supplies such as recycled water and
degraded groundwater when there is a regional benefit to offset imported water supplies.
Currently, 355 thousand acre-feet (TAF) of recycled water is permitted for use within
Metropolitan service area.58 Metropolitan estimates that an additional 480 TAF per year
' of new recycled water could be developed and used by 2025 with an additional 130 TAF
per year by 2050. Approximately 30 percent of the recycled water use within
Metropolitan's service area is for groundwater replenishment and seawater barriers. In
the future it is anticipated that up to 90 percent of all water used for seawater barriers will
be recycled water.
Metropolitan recognizes the importance of member agencies developing local supplies
and has implemented several programs to provide financial assistance. Metropolitan's
incentive programs include:
• Competitive Local Resources Program: Supports the development of cost-
effective water recycling and groundwater recovery projects that reduce
demands for imported supplies
Metropolitan Water District of Southern California,Regional UWMP,Draft September 2005
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• Seawater Desalination Program: Supports the development of seawater
desalination within Metropolitan's service area
• Innovative Supply Program: Encourages investigations into alternative
approaches to increasing the region's water supply. ,
According to Metropolitan's 2005 UWMP, 13 projects were selected in 2004 for
implementation under the Competitive Local Resources Program. None of the projects ,
are within the TWS's service area, however two projects are proposed under MWDOC,
the wholesaler to EOCWD. The projects include the Groundwater Replenishment
System and a recycled water upgrade within Irvine Ranch Water District's service area. '
The Groundwater Replenishment System is discussed as a planned project under OCWD.
Under the Innovative Supply Program, Metropolitan selected 10 projects for grant ,
funding. Proposals included harvesting storm runoff, onsite recycling, and desalination.
The project findings will be presented to member agencies in 2006.
Regional Groundwater Conjunctive Use Target
Other programs within Metropolitan to maximize water supplies include storage and
groundwater management programs. The IRP Update identified the need for dry-year
storage within surface water reservoirs and the need for groundwater storage. In 2002,
Diamond Valley Lake reached its full storage capacity of 800,000 AF. Approximately ,
400,000 AF are dedicated for dry-year storage. Metropolitan has developed a number of
local programs to increase storage in the groundwater basins. The programs include:
• North Las Posas Basin — In 1995, Metropolitan and Calleguas Municipal
Water District developed facilities for groundwater storage and extraction
from the North Las Posas Basin. Metropolitan has the right to store up to
210,000 AF of water. The well fields are expected to be fully operational in
2007 with Phases I and II already complete. It is expected the North Las Posas ,
program will yield 47,000 AF of groundwater from the Basin each year.
• Proposition 13 Projects — In 2000, DWR selected Metropolitan to receive ,
financial funding to help fund the southern California Water Supply
Reliability Projects Program. The program coordinates eight conjunctive use
projects with a total storage capacity of 195 TAF and a dry-year yield of 65
TAF per year. One of the projects selected through the request for proposals
for Proposition 13 funding includes the Orange County Groundwater
Conjunctive Use Program. This program was submitted by OCWD and '
MWDOC.
• Raymond Basin— In January 2000, Metropolitan entered into agreements with ,
the City of Pasadena and Foothill Municipal Water District to implement a
groundwater storage program that is anticipated to yield 22 TAF per year by ,
2010.
• Other Programs — Metropolitan intends to expand the conjunctive use
programs to add another 80 TAF to groundwater storage. Other basins in the
area are being evaluated for possible conjunctive use projects.
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State Water Project Target
The major actions Metropolitan is completing to improve SWP reliability include the
following:
' Delta Improvements Package— The actions outlined in this package are related to
water project operations in the Delta. The actions are designed to allow the SWP
to operate the Banks Pumping Plant in the Delta at 8,500 CFS. Currently Banks
Pumping Plant operates at 6,680 CFS. Metropolitan anticipates that increase
diversion from the Delta will result in an increase of 130 TAF per year will be
available for groundwater and surface water storage.
• Phase 8 Settlement— This agreement includes various recommended water supply
' projects that meet demand and water quality objectives within the Sacramento
Valley. The various conjunctive use projects will yield approximately 185 "TAF
per year in the Sacramento Valley of which approximately 55 TAF would be
available to Metropolitan through its SWP allocation.
• Monterey Amendment—The Monterey Amendment enables Metropolitan to use a
portion of the San Luis Reservoir's capacity for carryover storage. This will
increase SWP delivery to Metropolitan by 93 to 285 TAF depending on supply
conditions.
• SWP Terminal Storage — Metropolitan has water rights for storage at Lake Perris
' and Castaic Lake. The storage provides Metropolitan with options for managing
SWP deliveries and store up to 73 to 219 TAF of carryover water.
• Desert Water Agency/Coachella Valley Water District (DWCV) SWP Table A
Transfer— This transfer to DWCV includes 100 TAF of Metropolitan SWP Table
A amount in exchange for other rights such as its full carryover amounts in San
' Luis and full use of flexible storage in Castaic and Perris Reservoirs. It is
anticipated that the call-back provision of the entitlement transfer can provide
between 5 and 26 TAF of water depending on the water year.
• Desert Water Agency/Coachella Valley Water District (DWCV) Advance
Delivery Program — Under this program Metropolitan delivers Colorado River
water to the DWCV in exchange for their SWP Contract Table A allocations.
Metropolitan can expect increases in SWP Table A deliveries of 6 to 18 TAF
depending on the water year.
Colorado River Aqueduct Target
Metropolitan also receives imported water from the Colorado River Aqueduct.
Metropolitan, Imperial Irrigation District (IID) and Coachella Valley Water District
executed the Quantification Settlement Agreement (QSA) in October 2003. The QSA
established the baseline water use for each agency and facilitated the transfer agricultural
water to urban uses. A number of programs have been identified to assist Metropolitan
meet their target goal of 1.2 MAF per year from the Colorado River Aqueduct. These
programs include the following:
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Section 4 2005 Urban Water Management Plan
• Coachella and All-American Canal Lining Project — The Coachella Canal Lining
Project is scheduled to be completed in January 2007 and is expected to conserve t
26,000 AFY. The All-American Canal Lining Project is scheduled to be
completed in 2008 and is expected to conserve 67,700 AFY. The conserved water
will be made available in Lake Havasu for diversion from Metropolitan. In '
exchange, Metropolitan will supply a like amount to the San Luis Rey Settlement
Parties and San Diego County Water Authority. ,
• IID/San Diego County Water Authority Transfer — IID has agreed to implement a
conservation program and transfer water to San Diego County Water Authority. ,
The transfer began in 2003 with 10 TAF and will increase yearly until 2023 where
the transfer will be 200 TAF annually. Water will be conserved through land
fallowing and irrigation efficiency measures. Metropolitan will supply the water ,
conserved to San Diego County Water Authority in exchange for a like amount
out of Lake Havasu_.
• Imperial Irrigation District/Metropolitan Conservation Program — The program ,
originally provided funding from Metropolitan to implement water efficiency
improvements within IID. Metropolitan in tern would reserve the right to divert
the water conserved by those investments. Execution of the QSA extended the
term of the program to 2078 and guaranteed Metropolitan at least 80 TAF per ,
year.
• Palo Verde Land Management and Crop Rotation Program — This program offers '
financial incentives to farmers with Palo Verde Irrigation District to not irrigate a
portion of their land. A maximum of 29 percent of lands within Palo Verde
Irrigation District can be fallowed in any year. The water conserved will be '
available to Metropolitan with a maximum of 111 TAF per year expected.
• Hayfield Groundwater Storage Program — Metropolitan will divert Colorado
River water and store it in the Hayfield Groundwater Basin in east Riverside
County. Currently there is 73 TAF of water in storage. Metropolitan expects the
program to eventually develop a storage capacity of approximately 500 TAF. '
• Chuckwalla Groundwater Storage Program — Metropolitan proposes to store
water when available in the Upper Chuckwalla Groundwater Basin for future ,
delivery to Metropolitan.
• Lower Coachella Valley Groundwater Storage Program — Metropolitan, ,
Coachella Valley Water District, and the Desert Water Agency are investigating
the feasibility of a conjunctive use program in the Lower Coachella Groundwater
Basin. The Basin has the potential to store 500 TAF of groundwater for
Metropolitan.
• Salton Sea Restoration Transfer — A transfer of up to 1.6 MAF would be '
conserved by IID and made available to Metropolitan. The proceeds from the
DWR transfer would be placed in the Salton Sea Restoration Fund. ,
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• Lake Mead Storage — Metropolitan is exploring options for storing water in Lake
Mead.
CVP/SWP Storage and Transfers Target
Metropolitan has focused on voluntary short and long-term transfer and storage programs
with Central Valley Project and other SWP contractors. Currently, Metropolitan has
enough transfer and storage programs to meet their 2010 target goal of 300 TAF.
' Metropolitan has four CVP/SWP transfer and storage programs in place for a total of
317,000 acre-feet of dry-year supply. Metropolitan is also pursuing a new storage
program with Mojave Water Agency and continues to pursue Central Valley water
' transfers on an as needed basis. The operational programs include:
• Semitropic— 107,000 AF dry-year supply
' • Arvin-Edison—90,000 AF dry-year supply
• San Bernardino Valley Municipal Water District— 70,000 AF dry-year supply
• Kern Delta Water District— 50,000 AF dry-year supply
• Mojave Storage Program—35,000 AF dry-year supply
• Central Valley Transfer Program— 160,000 AF dry-year supply
' Municipal Water District of Orange County(MWDOC) Projects
Sufficient water storage programs will help to ensure adequate water supplies in the
future and in time of drought. The need for local storage intensifies with southern
California's and the Orange County region's dependence on imported water to serve
1 water demands. One of the most effective forms of storage in a highly dry and and
climate is conjunctive use wherein water is stored under ground during wet periods and
pumped out during dry or drought periods.
The MWDOC 2005 Regional Urban Water Management Plan discusses a number of
water supply opportunities in Orange County, including the Groundwater Replenishment
System, to protect and maximize the yield of the Basin.
IOrange County Groundwater Conjunctive Use Program
As discussed above, the Orange County Groundwater Conjunctive Use Program was
1 selected by Metropolitan in June 2003, funded by Proposition 13, to construct
groundwater conjunctive use projects that would store imported water in wet years for
use in dry years. This is a 25-year project between MWDOC, OCWD, and Metropolitan
to store up to 60,000 AF of imported water in the Basin for this purpose, extracting up to
20,000 AF of water during dry periods from 7-10 strategically sited wells. Although the
TWS was not selected to participate in this program, the additional wells would reduce
the region's dependence on imported water during dry periods and would provide greater
reliability.
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Section 4 2005 Urban Water Management Plan
Orange County Water District (OCWD) Projects
OCWD is dedicated to maintaining a reliable supply of water for its groundwater users. '
OCWD has identified reliability measures to help mitigate emergency water shortages or
increase water supply, including the following: '
• OCWD has an agreement with San Bernardino Valley Municipal Water District
(SBVMWD) to purchase groundwater supplies. SBVMWD's groundwater table is ,
very high, making excess supply available for pumping to the Santa Ana River for
OCWD's use. ,
• OCWD continues to discuss the purchase of non-SWP water supplies via
SBVMWD's capacity in the SWP system.
• OCWD previously entered into a one-year contract with Western Water Company
to purchase water from Northern California and plans to continue with similar
contracts in the future. ,
• Wheeled water supplies are available for purchase through Metropolitan.
• Facilities to capture greater amounts of Santa Ana River Storm flows are being ,
proposed and constructed such as recharge basins.
• OCWD continues to work with the Army Corps of Engineers to allow an increase '
in the water conservation pool level behind Prado Dam. An increase in the
conservation pool level allows more storage of storm flows for later use as '
recharge water.
Orange County Sanitation Districts (OCSD)
As mentioned earlier, OCSD supplies treated wastewater to OCWD for further treatment.
OCWD relies on recycled water from OCSD's treatment facilities to protect the Basin ,
through seawater intrusion barriers and landscape irrigation. OCSD in conjunction with
OCWD have implemented the GWRS, beginning in October 2002 with OCWD and
OCSD signing a Joint Exercise of Powers Agreement for the GWRS. The first phase is
currently underway, which will treat wastewater to drinking water standards for direct
injection into the existing seawater intrusion barrier and percolation through recharge
basins in Anaheim, Califomia.59 The project is scheduled to go online in 2007 and will
maintain and improve the reliability of the region's water supply. Further discussion on
water recycling is included in Section 8 of this Plan. ■
4.5 TRANSFER AND EXCHANGE OPPORTUNITIES !!
TWS maintains three connections to the Metropolitan system and four emergency inter-
connections with neighboring public water systems to ensure a backup supply in the
event of a short-term emergency situations. The Metropolitan connections are typically
59 Orange County Water District,Draft 2002-2003 Engineer's Report on Groundwater conditions,Water Supply and ,
Basin Utilization in the Orange County Water District,February 2004
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operated as constant flow sources, but they function as emergency standby sources when
' pressures drop significantly. The other interconnections are normally closed, but the
valves can be opened in emergency situations.
IIn addition to emergency connections, water exchange or transfer opportunities outside of
MWDOC, EOCWD, and OCWD are obtainable if needed. However, based on the current
' availability of groundwater and imported water, along with the opportunity for recycled
water to TWS, no water exchanges or transfers are being considered at this time.
The TWS has not entered into any agreements for transfer or exchange of water.
However, Metropolitan, MWDOC, and OCWD are exploring options that would benefit
the entire Orange County region. These exchanges were discussed earlier under proposed
projects.
' 4.6 DESALINATED WATER OPPORTUNITIES
' Desalination is viewed as a way to develop a Iocal, reliable source of water that assists
agencies in reducing their demand on imported water, reducing groundwater overdraft,
and in some cases making unusable groundwater available for municipal uses. Currently,
there are no identified TWS projects for desalination of seawater or impaired
groundwater. However, from a regional perspective, desalination projects within the
region indirectly benefit the TWS.
Department of Water Resources Desalination Task Force
Assembly Bill 2717 called for DWR to establish a Desalination Task Force to evaluate
the following: (1) Potential opportunities for desalination of seawater and brackish water
in California; (2) Impediments to using desalination technology; and (3) the role of the
State in furthering the use of desalination.60 The task force was comprised of 27
' organizations, and in October 2003 provided a list of recommendations related to the
following issues: general, energy, environment, planning, and permitting.
' Metropolitan's Seawater Desalination Program
In August 2001, Metropolitan launched its Seawater Desalination Program. The program
objectives were to provide financial and technical support for the development of cost-
effective seawater desalination projects that will contribute to greater water supply
reliability. In 2004, Metropolitan adopted an IRP Update that includes a target of 150,000
AFY for seawater desalination projects to meet future demands. A call for proposals,
under the Seawater Desalination Program, produced five projects by member agencies
including the Los Angeles Department of Water and Power, Long Beach Water
Department, MWDOC, San Diego County Water Authority, and West Basin Municipal
Water District. Collectively, the projects could produce approximately 126,000 AFY.
IEO DWR,California Water Plan Update 2005,Volume 2-Resource Management Strategies
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This additional source of water supply would provide greater water reliability for
southern California residents.
Metropolitan has also provided funding to five member agencies to research specific
aspects of seawater desalination. The agencies are reviewing and assessing treatment ,
technologies, pretreatment alternatives, and brine disposal, permitting, and regulatory
approvals associated with delivery of desalinated sweater to the local distribution
system.61 Metropolitan continues to work with its member agencies to develop local
projects, inform decision makers about the role of desalinated sea water on future
supplies, and secure funding from various state and federal programs.
Department of Water Resources Proposition 50 Funding
In January 2005, DWR received 42 eligible applications requesting $71.3 million from
funds available through Proposition 50. Proposition 50, the Water Quality, Supply and ,
Safe Drinking Water Projects, Coastal Wetlands Purchase and Protection Act was passed
by voters in 2002. Projects eligible for the program include construction projects,
research and development, feasibility studies, pilot projects, and demonstration progralns. ,
Local agencies, water districts, academic and research institutions will be able to use the
funds in the development of new water supplies through brackish water and seawater ,
desalination.
DWR is recommending funding for 25 of the 43 projects with the available $25 million
under the current desalination grant cycle. With this funding recommendation, 54 percent
of the fund will support brackish water desalination related projects and 46 percent will
support ocean desalination related projects. The projects recommended for funding ,
include facilities in Marin, Alameda and San Bernardino counties. Pilot projects in Long
Beach, Santa Cruz, San Diego and Los Angeles are among those that will receive grants
under the proposed funding plan. Research and development activities at the Lawrence
Livermore National Laboratory and the University of California, Los Angeles are
included in the recommendations, as are feasibility studies by agencies in the Bay Area, ,
Monterey, and Riverside County.
The Draft 2006 Water Desalination Proposal Solicitation Package (PSP) was released on ,
October 13, 2005. A final PSP is anticipated to be released November 25, 2005, with
proposals due to DWR by January 31. 2005. The 2006 funding cycle, the second and last '
cycle of this funding program, includes $21.5 million for eligible projects similar to those
in the first funding cycle: brackish water and seawater desalination construction projects;
research and development; feasibility studies; and pilot and demonstration projects for
the development of local potable water supplies.
MWDOC and OCWD's Seawater Desalination Concept Analysis i
MWDOC and OCWD conducted a study, Seawater Desalination Concept Analysis, in
March 1999, to determine the relative cost-effectiveness of ocean desalting compared to
61 Metropolitan Water District of Southern California,2005 Regional Urban Water Management Plan
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other potential supplies. They continued to develop a program concept and in 2003
published their draft Ocean Water Desalination Program Concept Development Paper
(Concept Paper). The Concept Paper was prepared to provide the OCWD and MWDOC
with additional information on potentially developing an ocean water desalter at the AES
Huntington Beach Generating Station site, owned by AES Corporation.
The purpose was to outline the AES site opportunities and identify the key issues to be
resolved before moving forward with planning and implementation efforts. The project
continues to be conceptual in nature; however, the concept paper investigates the
opportunities surrounding the planning and feasibility of ocean desalination in Orange
County using a specified site with existing infrastructure. The project concept is the
development of a 50 MGD ocean water desalination plant to provide base water supply
for the OCWD service area. A 50 MGD plant could be expected to produce 50,000 AFY.
The implementation of an ocean water desalination plant can reduce groundwater
pumping levels in coastal OCWD and assist in refilling the groundwater basin. It could
' serve as an emergency backup supply for South Orange County as well as reduce the
amount of water required for seawater barrier injection. Implementation of the ocean
water desalination plant would require regulatory compliance, environmental stewardship
stakeholder interface, and a lengthy completion schedule.
Proposed Projects for Desalination
1 In Orange County, there are three proposed ocean desalination projects that could serve
MWDOC. The proposed projects are discussed in MWDOC's 2005 Regional UWMP and
' summarized below.
Poseidon Resources Corporation Proposed Project—Poseidon Resources Corporation,
a private company, is proposing a seawater desalination project to be located adjacent to
the AES Generation Power Plant in Huntington Beach. The proposed project would
l provide 50 MGD of water supply to coastal and south Orange County. In 2003, the City
of Huntington Beach determined the project would cause unacceptable environmental
impacts as proposed. Poseidon Resources Corporation therefore submitted a revised draft
Environmental Impact Report. The project is currently in the environmental review and
permitting phase and there are no contractual agreements in place for the purchase of
water.
Joint San Diego/Orange County Proposed Regional San Onofre Project — This joint
' project is currently being investigated to determine project feasibility. The project size is
anticipated to range from 50 — 150 MGD and utilize the decommissioned Unit 1 San
Onofre Nuclear Generation Station cooling water inlet and outlet conduits for feedwater
and brine disposal. The project may be implemented in 2020.
' MWDOC Proposed Dana Point Ocean Desalination Project — MWDOC is currently
investigating the feasibility of a desalination project in Dana Point adjacent to San Juan
Creek. The feasibility study will evaluate feedwater supply, concentrated RO reject
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Section 4 2005 Urban Water Management Plan
disposal, and energy. The recommended capacity is 25 mgd. MWDOC received DWR
Proposition 50 funding in the amount of$1,000,000 to investigate horizontal directional
drilling with water well technology for use in constructing feedwater supply wells in the
marine alluvial channel system.62
1
°'Municipal Water District of Orange County,Draft 2005 Regional UWMP. '
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2005 Urban Water Management Plan Update Section 5
SECTION 5
' WATER USE PROVISIONS
5.1 PAST, CURRENT AND PROJECTED WATER USE BY SECTOR
Water use for the City includes services both inside and outside the City boundaries.
' Table 5.1-1 shows past, current and projected water use per sector between 2000 and
2030. The total water use per sector has decreased by 5 percent from 2000 to current
2005 use. This may be attributed to an increase in water conservation and the wet weather
' in 2004, which contributed to high precipitation throughout southern California. Thus, the
decrease in water demand is consistent with other agency data throughout the region.
' The projected water use by sector reflects the water demand projections shown in Table
4.2-4 in Section 4.2.
Table 5.1-1
Historic and Projected Water Use by Sector
' (Acre-feet-All Future Projections Rounded to the Nearest 10 AF)
;`Water'Use Sectors 2000 . 2005',', 2010 2015 2026_"'- "1025 2030
Single Family 7,186 6,413 6,580 6,580 6,580 6,580 6,580
Residential
' Multi Family Residential 2,836 2,784 2,850 2,850 2,850 2,850 2,850
' Commercial 956 1,120 1,160 1,160 1,160 1,160 1,160
Industrial 337 150 160 160 160 160 160
Institutional 490 631 630 630 630 630 630
' Dedicated Irrigation 309 339 340 340 340 340 340
Meter
Fire 35 3 10 10 10 10 10
Agricultural 17 9 10 10 10 10 10
Subtotal For Sectors 12,166 11,449 11,740 11,740 11,740 11,740 11,740
Unaccounted-for-
System Losses % t'1 1,630 1,293 1,330 1,330 1,330 1,330 1,330
Brine Discharge[21 380 303 300 300 300 300 300
Total Water Use 12,166 11,449 13,370 13,370 13,370 13,370 13,370
Unaccounted-for-losses in 2000 and 2005 are based on actual records, future years unaccounted-for
losses are estimated to be 11.3%as experienced in 2005
121 Brine discharge of 380 AF/Y in 2000 and 302.7 AF/Y in 2005 is not accounted for in Total Water Use
since it is discharged directly into the sewer system and not delivered to customers.
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Section 4 2005 Urban Water Management Plan
1
Unaccounted-for-water is the difference between water production and water
consumption and represents "lost" water. Unaccounted-for-water occurs for a number of 1
reasons:
Water lost from system leakage, i.e. from pipes, valves, pumps, and other water 1
system appurtenances.
n Water used by the Fire Department to fight fires. This water is not metered. 1
» Customer meter inaccuracies. Meters have an inherent accuracy for a specified
flow range. However, flow above or below this range is usually registered at a
lower rate. Meters become less accurate with time due to wear. 1
Water theft by unauthorized users. This water is also not metered.
5.2 WATER SERVICE CONNECTIONS BY SECTOR 1
Table 5.1-2 shows the number of water service customers by sector between 2000 and 1
2005, and projections of customers through 2030. The number of service connections is
anticipated to increase very slightly through 2030, consistent with the projected small
increase in population and general built-out status of lands within the TWS service area. 1
Table 5.1-2 1
Number of Water Service Connections by Sector
Water Use Sectorsr 2000 ,a 2005 2010 . 2015 2020 2025 � 2030 1
Single Family Residential 11,676 11,686 11,978 11,978 11,978 11,978 11,978y
Multi Family Residential 864 858 879 879 879 879 879 1
Commercial 754 795 821 821 821 821 821
Industrial 50 51 52 52 52 52 52 1
Institutional 159 177 177 177 177 177 177
Dedicated Irrigation 192 195 200 200 200 200 200
Meters 1
Fire 156 177 181 181 181 181 181
Agriculture 8 6 6 6 6 6 6 1
Total Connections 13,859 13,954 14,294 14,294 14,294 14,294 14,294
Source: 2000 and 2005 data is based on actual data; all future projections are estimates based on 2.5% 1
projected growth over the next five years,which then stabilizes in 2010.
i
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' Tustin Water Services
2005 Urban Water Management Plan Update Section 6
' SECTION 6
WATER DEMAND MANAGEMENT MEASURES
' 6.1 INTRODUCTION
Water conservation, often called demand-side management, can be defined as practices,
techniques, and technologies that improve the efficiency of water use. Such practices are
referred to as demand management measures (DMM). Increased efficiency expands the
use of the water resource, freeing up water supplies for other uses, such as population
growth, new industry, and environmental conservation.
Water conservation is often equated with temporary restrictions on customer water use.
' Although water restrictions can be a useful emergency tool for drought management or
service disruptions, as discussed in Section 7, water conservation programs emphasize
lasting day-to-day improvements in water use efficiency.
The increasing efforts in water conservation are spurred by a number of factors: growing
competition for limited supplies, increasing costs and difficulties in developing new
supplies, optimization of existing facilities, delay of capital investments in capacity
expansion, and growing public support for the conservation of limited natural resources
and adequate water supplies to preserve environmental integrity.
TWS recognizes water use efficiency as an integral component of current and future
' water strategy for the City. The DMMs outlined in the Water Code section 10631(f) are
consistent with the 14 Best Management Practices (BMP) established through the
' California Urban Water Conservation Council's (CUWCC) Memorandum of
Understanding Regarding Urban Water Conservation in California (MOU). These BMPs
refer to policies, programs, rules, regulations and ordinances, and the use of devices,
' equipment and facilities that, over the long term, have been generally justified and
accepted by the industry as providing a "reliable" reduction in water demand. The BMPs
(or DMMs) are technically and economically reasonable and not environmentally or
socially unacceptable, and are not otherwise unreasonable for most water suppliers to
carry out.
TWS implements numerous programs related to the 14 DMMs as discussed in Section
6.3 below. While TWS is not a signatory to the MOU, MWDOC is a signatory and
provides the following services on behalf of its member agencies, from which TWS
benefits through EOCWD:
1. An on-going water use efficiency program support for member agencies and their
subagencies.
' 2. Lead agency implementing water use efficiency programs that are more cost-
effectively implemented on a regional basis rather than a local basis.
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3. Secures outside funding for water use efficiency projects and programs from
Metropolitan's Conservation Credits Program, United States Bureau of Reclamation, '
State Water Resources Control Board, and other state and federal sources.
6.2 DETERMINATION OF DMM IMPLEMENTATION
TWS has continued to work cooperatively with EOCWD, MWDOC, and Metropolitan
toward implementing the 14 cost-effective DMMs. Most of the cost of implementing
these programs is incorporated in the regional water agencies rate surcharges. '
These 14 DMMs include technologies and methodologies that have been sufficiently '
documented in multiple demonstration projects that result in more efficient water use and
conservation. TWS' 2000 UWMP indicated activities currently underway to implement
the DMMs. Section 6.3 provides an updated review of the TWS' efforts accomplished ,
since 2000 to successfully implement the DMMs, as well as projections of conservation
program efforts through 2010.
6.3 DEMAND MANAGEMENT MEASURES
TWS is committed to conservation as a means to provide a sustainable source of water
supply to its service area, and plans to continue implementation of its conservation '
programs in conjunction with MWDOC during the next five years. As a sub-agency of
EOCWD and MWDOC, the City benefits from various regional programs performed by '
MWDOC on behalf of its sub-agencies.
As a signatory to the MOU, MWDOC has made the State-mandated DMMs for water ,
conservation the cornerstone of its conservation programs for its member Agencies.
MWDOC's regional water use efficiency DMM programs, as well as TWS DMM
activities are presented below. r
DMM 1 — Residential Water Surveys for Single and Multi-Family Residential ,
Customers
Residential surveys by TWS have been done on an informal basis via customer requests '
responding to high water bill complaints or meter readings that indicated higher than
normal usage. In 1997, MWDOC began accessing Metropolitan funding assistance for
residential surveys, which included retrofitting high water-using devices with low flow '
devices. MWDOC ceased its program in FY 01/02 and does not plan to offer the program
in the future. However, TWS plans to continue its program contingent upon customer ,
requests. Table 6.3-1 shows the projected number of surveys to be conducted in the
service area.
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Table 6.3-1
DMM 1 — Single Family and Multi-Family Surveys
Year 2066-746b
#of surve ys (1) 200
Total Expenditures $ (2) $40,000
Water Savings (AFY) (3) 4.7
Note:The quantities above were derived based on the following assumptions:
L Estimated that 40 surveys will be conducted per year.
' 2. Estimated that$100/hour for 2 man hours per survey equals$200/survey X 200 surveys.
3. Estimated at 200 total surveys x 365 days/year x 21 gpd)/325,900 gallons/AF.
Based on the California Urban Water Conservation Council's savings rates, set forth in
the BMP Costs and Savings Study (December 2003), savings from untargeted intensive
home surveys results in an average of 21 gpd per household (both single family and multi-
family) total savings for future projections.
TWS will measure the effectiveness of water survey programs through analyzing the
number of surveys distributed and the difference in water consumption for the families
after the surveys are conducted. The program will continue on an ongoing basis through
' 2010, at which time a decision will be made whether to continue the surveys.
' DMM 2 — Residential Plumbing Retrofits
Since 1991; TWS has participated in the residential plumbing program offered by
MWDOC since 1991. From 1991 to date, 5,473 ULFTs have been retrofitted in single
family homes throughout MWDOC's service area, 3,978 in multi-family homes, and
8,059 low-flow showerheads have been installed. MWDOC has tracked replacement of
5,811 toilets with ULFTs on behalf of TWS from FY 00/01 and FY 05/06 through the
ULFT rebate program.63 Of this total amount, 3,176 ULFTs were installed in single
' family homes, and 2,635 ULFTs were installed in multi-family homes. The ULFT
program is discussed in more detail under DMM 14. Approximately 21.2-27.2 gallons of
water per day are saved with the installation of the ULFTs for single family and 36.7-
63.7 gallons per day per device for multi-family. Table 6.3-2 shows the number of ULFT
residential retrofits in TWS' service area and the total estimated water savings.
1
1
"Municipal Water District of Orange County,City of Tustin Water Conservation AcMevement,In-house
document.
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Section 6 2005 Urban Water Management Plan
Table 6.3-2
DMM 2 — TWS Residential Plumbing Retrofit DevicesIF
'
' ULFT
fi ULFT
Fiscal Year s '
Single Family F Multi Faintly
y
r
2001 502 1,006
2002 363 843
2003 688 408
2004 555 272
2005 55 14
2006 6 1
2007 25 75
2008 25 75
2009 25 75
2010 25 75 ,
Total Retrofits 2,269 2,844
Total Water Savings 61 159
Using the 2001 Orange County Saturation Study as a benchmark, saturation of low-flow '
showerheads was measured at 67% and 60% in single- and multi-family housing stock '
respectively. Today, low-flow showerhead saturation is estimated at nearly 100% and
94% saturation in single- and multi-family homes. As a result, water agencies throughout
Orange County have achieved the 75% saturation requirement for this BMP.
The method to evaluate effectiveness will consist of calculating estimated water savings
for each BMP and comparing historic water demand with the current water demand and '
determining the quantity of water savings. EOCWD will continue to offer the program to
its service area through MWDOC through 2010. ,
DMM 3 — Distribution System Water Audits, Leaks Detection and Repair
The TWS Water Master Plan evaluates the water distribution system to meet all demand
conditions, including peak hour demand and maximum day demand plus fire flow.64 In '
addition, the distribution system will be sized to allow an even distribution of flow to
reservoirs during low demand periods. As part of the TWS water system CIP, a program ,
has been developed and scheduling is in place to retrofit old distribution pipelines on an
annual basis. These distribution system improvements include water main replacements,
which includes a $2.0 million annual budget from 2000 to 2004 and a $1.0 million annual '
budget for eight years thereafter.
TWS maintains an emergency response program that aggressively repairs main breaks,
hydrant leaks or breaks, and meter leaks. A team of TWS staff are available to
permanently repair main or hydrant breaks, and promptly restore water service. Both '
"City of Tustin. Water Master Plan.2000. ,
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2005 Urban Water Management Plan Section 6
proactive and "inform and response" approaches are utilized for addressing water meter
leaks. All meter leaks are investigated and repaired the same day, unless unable to do so,
then next day service is performed.
' MWDOC publishes annually the Orange County Water Agencies Water Rates, Water
System Operations, and. Financial Information Survey. This survey facilitates a pre-
screening survey that estimates the volume and percent of unaccounted-for-water for
each retail water agency in Orange County. In 2004, the percent of unaccounted-for-
water for retail water agencies ranged from a low of 1.2% to a high of 10.7%, with an
' average of 5.1%.65
TWS' unaccounted-for-water percentage is monitored on a monthly basis 66, As shown in
Table 5.1, unaccounted-for-water loss for 2000 was 13.4% and 11.3% in 2005. The level
of unaccounted water will continue to be regularly monitored. If water losses were to rise
' appreciably, by the City, a system wide survey of distribution facilities would be
implemented. The City's distribution system improvements program is expected to help
reduce unaccounted-for-water loss by at least 1-3% through 2010.
Table 6.3-3 provides the City's current and projected water audit, leak detection and
repair levels through 2010.
Table 6.3-3
DMM 3 —TWS System Water Audits, Leak Detection, and Repair
w 'Historical- Current andProjected :
TWS 3
(2001=2004)•. ((2005-2010)
% of Unaccounted Water 11.3% less than 9 %
Expenditures for line repair $2 million per year $1 million per year
' To evaluate the effectiveness of these conservation measures, staff will review the data
' records to confirm that the unaccounted-for-water losses remain low and consistent.
DMM 4 — Metering with Commodity Rates
TWS requires meters for all new water connections and bills by volume of use. All water
service connections, with the exception of dedicated fire services, are metered. TWS has
retrofitted all existing unmetered connections to be metered.
MWDOC Draft Urban Water Management Plan.October 5,2005.
Unaccounted-for water is the difference between water production and water consumption and represents
"lost" water. Unaccounted-for water may occur from: (1) water lost from system leaking,i.e. from pipes, valves,
pumps, and other water system appurtenances;(2) water used by the Fire Department to fight fires, which is not
metered;and(3)occasional customer meter inaccuracies.
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Metering allows the City to conserve a total of 20-30 percent of the water demand t
overall, and up to 40 percent savings during peak demand periods, as estimated by the
CUWCC's BMP Costs and Savings Study (December 2003). Table 5.1-2 in Section 5
shows the number of water service customers by sector between 2000 and 2005, and ,
projections of customers through 2030. All service connections are metered. The measure
of effectiveness for this DMM will include a comparison of water use before and after
meter calibration. The City will continue to require metering for all connections.
DMM 5 — Large Landscape Conservation Programs '
TWS participates in MWDOC's regional irrigation efficiency programs. MWDOC and
Metropolitan provide sponsorship and performance-based funding for these programs to '
offset the cost to the customer. These programs include the Landscape Contractor
Certification Program and the Protector Del Agua Irrigation Management Training.67
Following is a brief description of these programs:
Landscape Contractor Certification Program: This program is designed to develop
landscape irrigation budgets for dedicated landscape meters in cooperation with
landscape contractors, property management companies, cities, school districts, and '
county facilities. Financial incentives are offered to improve landscape water use
efficiency through regional funding provided by Metropolitan.
Protector del Agua Irrigation Training Program. This program is free to TWS
participants and offers information for the landscape professional on water management,
enhanced landscape practices, and practical ideas to improve their bottom line. The ,
Program allows landscape contractors to stay abreast of the policy and activities of the
water agencies, and proper cultural practices within their industry. As part of the ,
program, landscape certification training is offered.
These programs directly benefit TWS through its landscape contractor activities. Such ,
activities include landscape irrigation budgets, green material management, computer
controlled irrigation systems, and bilingual irrigation management training, including
advanced irrigation schedule programming and plant identification to promote use of and ,
climate plantings.
On a smaller scale, TWS residents are also eligible to participate in MWDOC's Smart
Timer Landscape Irrigation Controller Program (Rebate Program). The SmartTimer
Rebate Program began in September 2004 and offers an incentive to retrofit the existing '
irrigation controller with a weather based irrigation controller. Both single family
residential and commercial customers who have an existing clock are eligible to '
participate. SmartTimers sense weather conditions and apply the right amount of water
for plants to prevent over watering and urban run-off. In collaboration with Metropolitan
and the State Water Boards, MWDOC offers rebates of $20 per set up and operating '
'Municipal Water District of Orange County,Regional Urban Water Management Plan,December 2000.
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2005 Urban Water Management Plan Section 6
valve for residential use. Single family residential homes must have a minimum of 1,200
square feet of irrigated landscape. Rebates for commercial customers are $12 per attached
and operating valve and an additional $500 per acre under the control of the installed
technology. TWS will continue to offer this program to residents within its service area,
and plans to budget $2,000 per year for this program beginning in FY 2006-2007. This
program also allows MWDOC member agency residents to accomplish the following:
1. Save money by reducing outdoor water use by up to 25%
2. Advance the health and appearance of landscape; and
' 3. Protect the environment by reducing runoff.
' Large landscape devices may provide 19-35 percent savings in water consumption, based
on CUWCC approximations. Residents of TWS' service area have installed a total of two
SmartTimers and the number of participants is anticipated to grow. The measure of
effectiveness for the City in implementing this BMP will consist of the amount of
increase in customer participation and demand for scheduled presentations.
In Section 5, Table 5.2 shows the number of landscape accounts by sector between 2000
and 2005, and projections of customers through 2030. The number of irrigation accounts
is projected to remain fairly consistent from 2005-2030.
DMM 6 — High-Efficiency Washing Machine Rebate Programs
' Through MWDOC, a current high efficiency clothes washer (HECW) rebate of $100 is
' provided to member agencies for the purchase of a HEWC machine installed in Orange
County. As of July 1, 2005, machines must have a water factor of 6.0 or less to qualify
for the rebate program, as determined by MWDOC. Such machines typically use 15 to 25
' gallons less water per load, with a potential water savings of up to 7,000 gallons per year.
These washing machines are offered for single family residential homes. Since FY
2001/02, a total of 407 HECWs have been installed in the TWS service area in single
family residential homes
' Southern California Edison (SCE) initiated a HECW Rebate Program in 1999. The
HECW Program consists of two different tiers of rebates ($50 and $100) based on the
level of energy savings by specified HECWs. Metropolitan participated in the program,
which includes the Orange County region, and has contributed $35 for each HECW. The
method to measure effectiveness of this DMM will include quantifying the number of
' HECW's distributed and the total potential water savings, and then analyzing the water
demand after one year of implementation to observe how the water demand has changed.
The water savings can be estimated at an average of 85 to 109 gallons per week per
machine, with 14.4 to 28.7 gpd/machine for single family residences, based on CUWCC
estimates. The mean savings of 5,085.6 gallons per year may be applied to each HECW.
Table 6.3-4 below shows estimated water savings based on this rate of savings.
' 6-7 Final Draft 317106
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Section 6 2005 Urban Water Management Plan
_ 1
Table 6.3-4
DMM 6 High Efficiency Washing Machine Rebates '
TWS Historical , Current andProlected
2001/02=2004/05 , (2005/06=2009/10
$ per rebate $100 $100 '
# of HECW rebates 407 125
Water Savings (AFY)Z 1.03 0.32 '
Notes:
I. Estimated at 25 rebates per year over the 5 year period. '
2. Estimated at 11.5-Pd water savings per machine.
DMM 7 — Public Information Programs ,
TWS and MWDOC partner together on public information education and outreach
programs that provide information regarding present and future water supplies, the
demand for a reliable supply of high quality water, and the importance of implementing
water efficient techniques and behaviors. TWS informs its water customers of upcoming ,
public information events and encourages participation in water conservation efforts and
programs sponsored by EOCWD, MWDOC, and Metropolitan.
MWDOC provides a comprehensive public information program built around '
communication, coordination and partnerships. TWS participates in the monthly Public
Affairs Workgroup meetings conducted by MWDOC with its member agencies. The '
meetings are held to coordinate public outreach efforts, as well as share information and
ideas on a countywide basis.
MWDOC has assisted TWS in promoting water conservation awareness in the annual
statewide Water Awareness Month held in May. In addition, TWS has participated in the ,
National Drinking Water Week, which includes a Children Drinking Water Festival
geared to promote water education, a poster and slogan contest, and distribution of water '
education kits to classrooms. TWS invested $16,200 in the Children Drinking Water
Festival for FY 2003-2005. To continue this program, TWS anticipates spending $27,000
during FY 2006-2010. TWS regularly distributes a variety of information materials to the '
public, including newsletters, fact sheets, brochures, issue bulletins, manager's reports,
annual reports, briefing books, and press kits.
The method to measure effectiveness of implementing this DMM for the City will
include quantifying the number of participants in the public programs, as well the number '
of public announcements/brochures distributed throughout the service area. An increase
in the participation and distribution of materials will indicate heightened public water
conservation awareness to work towards decreases in water use. TWS will continue to '
work with MWDOC to offer public information programs through 2010.
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1
DMM 8 — School Education Programs
Through MWDOC, water education programs are available to the TWS's public and
' private schools. Specific programs with State-approved curriculum are offered for
students from kindergarten through high school. Programs include classroom
presentations by MWDOC staff teachers, audio-visual programs, hands-on activities,
take-home materials for students, and workbooks and supplies for teachers.
During the 1999/00 school year, nearly 120,000 students were educated in Orange
County through MWDOC's program and over 500,000 students since 1995.68 The
number of students educated annually has doubled since 1979/80. The number of
students reached in the City of Tustin through MWDOC's Water Education Program is
shown in Table 6.3-5. More than 7,500 students have participated in TWS' water
education program since 2000. TWS is dedicated to continue providing water education
i and encourages participation in its program.
Table 6.3-5
DMM 8 —MWDOC Water Education Program
Number of Students Reached in Tustin
2000/01� 2001/6-2— 2002/03~. ,-2003/04 � 2004/05> 02006-2010
TWS 2,628 1,888 208 2,177 605 6,000
Source: MWDOC—2005 Regional Urban Water Management Plan
' The City will measure the effectiveness of this DMM by analyzing the total number of
students and schools participating in the presentations and assess whether the program
calls for expansion.
' DMM 9 — Commercial, Industrial and Institutional Programs
In FY 1995/96, MWDOC designed and implemented a commercial, industrial and
' institutional (CII) Water Use Survey Program on behalf of its member agencies with
funding from Metropolitan and the U.S. Bureau of Reclamation (USBR). Through FY
1995/96 to 1999/00, five CII sites were surveyed for TWS through MWDOC's program.
A trained auditor visited each location to survey all water using devices at each site.
Participants received a report detailing potential water saving areas, both through
behavioral modifications and the retrofitting of specific low-flow devices.
During fiscal years 1997/98 and 1998/99, MWDOC developed an in-house CII rebate
program utilizing funding provided by Metropolitan and OCSD. MWDOC's CII rebate
program signified the first time MWDOC was able to acquire funds from OCSD to assist
in the installation of retrofit devices aimed at reductions in waste water flows.
Municipal Water District of Orange County,Regional Urban Water Management Plant,December 2000.
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Participants from the CII Program were solicited to participate with rebate funds targeting
specific devices identified through the survey process. TWS was successful in securing '
two service area participants in the rebate program.
During fiscal year 1999/00, MWDOC phased out its own rebate program and began ,
arrangements to participate in Metropolitan's regional rebate program. MWDOC will
work with its member agencies, including Tustin, to target smaller commercial and
institutional sites to retrofit high water using devices. In order to provide the highest
possible funding incentive, MWDOC is looking to OCSD, OCWD, and highly motivated
member agencies to augment the funding provided by Metropolitan.
MWDOC's Save Water - Save a Buck! Program began in 2002 and offers rebates to
assist commercial, industrial, and institutional customers in replacing high-flow plumbing
fixtures with low-flow fixtures. Facilities where tow-flow devices are installed must be
located in Orange County. Rebates are available only on those devices listed in Table 5-
6.3-6 below and must replace higher water use devices. Installation of devices is the
responsibility of each participant. Participants may purchase and install as many of the
water saving devices as is applicable to their site. i
Table 6.3-6 ,
DMM 9 — MWDOC "Save Water— Save a Buck!" Program
Retrofit Device Rebate Amount
Ultra-Low-Flush Toilet $60 to $120
Ultra-Low-Flush Urinal or Waterless Urinal $60
Flush Valve Retrofit Kit $15 ,
Coin/Card-Operated High Efficiency Commercial
Clothes Washer $250
Cooling Tower Conductivity Controller $500
Hos ital X-ra Film Processor $2,000
Water Pressurized Broom $100 ,
Source: Municipal Water District of Orange County 2005 Urban Water Management Plan
More than 5,800 water wasting plumbing fixtures have been replaced with low flow ,
fixtures through this program. These retrofits are saving more than 560 acre-feet of
potable water per year.
Through MWDOC's CII Retrofit Program, TWS has actively provided rebates
throughout its service area. Approximately 24.5 gallons of water per day are saved with ,
the installation of commercial ULFTs, based on CUWCC data. Table 6.3-7 shows the
past and projected number of rebates distributed through the CII Rebate Program within ,
the TWS' service area:
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Table 6.3-7
DMM 9 -TWS CII Retrofit Program
TWS' 2001/02-: 2002/03 2003/04 2004L05 A2006 2010
_.. 0 -
' # of Rebates 9 64 16 34 120
' Water Savings (GPD) 221 1,568 392 833 3,000
' Additionally, since 1999, TWS has been participating in OCWD's Hotel and Motel
Water Conservation Program. This program offers free laminated hangers to promote the
reuse of towels and bed linens for multiple day usage. This program allows the guests and
the hotel or motel to be environmentally aware while reducing water use, lowering costs,
savings energy, and reducing pollution. In addition, hotels and motels that sign up for the
program also receive a bilingual instructional video for use in training their housekeeping
staff.
Through OCWD, TWS promotes a Restaurant Water Conservation Program that offers
free laminated tent cards for restaurants to place on their tables. The cards explain to
' guests the restaurants' interest in helping conserve water for Orange County and that the
restaurant will be serving water only upon request.
' TWS will continue to promote and support the regional CII Program through ongoing
program endorsement and distribution of informational brochures. MWDOC will provide
program effectiveness and conservation savings information, and will fund the program
' through their budget. The CII Rebate Program provides a total of 17.8-20.3 percent
median and 17.9-29.2 percent mean in savings on an annual basis.
The number of commercial and industrial accounts is shown in Table 5.1-2 of Section 5.
To measure the effectiveness of this DMM, the City will perform a water savings
analysis by calculating the total number of rebates distributed and the estimated water
savings for each. The total of this calculation will show the amount of water saved and
should be reflected in the overall water use before and after implementation of the DMM.
DMM 10 -Wholesale Agency Assistance Programs
TWS receives assistance to implement water use efficiency programs from MWDOC.
MWDOC has consistently provided the following assistance: (1) implementation of
' regional programs on behalf of Tustin and all Orange County water agencies; (2)
acquisition of annual grant funding from a variety of sources; and (3) technical assistance
regarding local program design and implementation, benefit/cost analysis, conservation
based rate structures, and program marketing.
' TWS will continue to work cooperatively with MWDOC to participate in regional DMM
programs, informational groups and projects, determination of the most cost-effective
DMMs, and tailoring programs specific to TWS on an ongoing basis.
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DMM 11 — Conservation Pricing
The first goal of any rate structure is to generate sufficient revenues to maintain efficient '
and reliable utility operations. The second target is fairness in the allocation of utility
service costs. Generally, it is possible to satisfy both of these goals in a rate structure that '
encourages water conservation or penalizes excessive water use. Designing water rates
must include the following: (1) determination of the water utility's total annual revenue
requirements for the period for the period for which the rates are to be in effect; (2)
determination of service costs by allocation of the total revenue requirements to the basic
water system cost components and distribution of these costs to the various customer ,
classes in accordance with service requirements; and (3) design water rates to recover the
cost of service from each class of customer.
The City's current water rates clearly meet the definition of "conservation pricing" as
defined by the CUWCC, which states that conservation pricing includes, "rates designed ,
to recover the cost of providing service." TWS' rates are designed in this manner.
Customers are billed bimonthly on the basis of a commodity charge, and a fixed service
charge.69 The service charge is based on meter size; a standard residential meter is
currently $16.00 per the bimonthly billing period.
The commodity component of the monthly water service charge is structured to recover
the actual cost of water, including the groundwater replenishment assessment (RA),
imported water charges, and energy and maintenance costs for TWS's water production ,
facilities. The fixed portion of the monthly charge is designed to cover the cost of water
distribution, meter reading and maintenance of the water distribution system, as well as a
portion of the capital improvement program. Distribution and production are distinct ,
programs in the annual Water Division budget. Applicable portions of administration,
engineering and water quality costs were assigned to each rate program. TWS' water '
rates will be re-evaluated for FY 2006-07.
Conservation-oriented water rate structures by themselves do not constitute an effective '
water conservation program. Rate structures work best as a conservation tool when
coupled with a sustained customer education program. Customer education is important
to establish and maintain the link between customer behavior and their water bill. Utility
customers require practical information about water-conserving practices and
technologies. Participation in other water conservation programs, such as plumbing t
fixture retrofit and replacement programs, can also be enhanced by rate incentives and
customer education. Finally, public acceptance of a rate structure is often enhanced if
customers understand the need for and benefits of water conservation. ,
fig MWDOC,Orange County Water Agencies:Water Rates,Water Systems Operations and Financial h-dormation,
2001.
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DMM 12 — Conservation Coordinator
' TWS assigns staff to implement conservation programs as defined within each of the
DMMs. TWS staff works closely with the Water Use Efficiency staff of MWDOC to
provide successful execution of regional programs, and those conducted on behalf of
TWS. TWS may either directly participate in or be represented by MWDOC in regional
' workgroups including the Water Use Efficiency Workgroup, Public Affairs Workgroup,
County of Orange Supervisor's Water Task Force, and the Orange County Water Use
Efficiency Steering Committee.
DMM 13 —Water Waste Prohibition
' The City Council passed Ordinance No. 1063 (April 1991) which allows passage of a
resolution from time to time to impose charges, surcharges, and penalties as deemed
necessary to accommodate water allocations, charges and penalties imposed by
Metropolitan, and other factors affecting the supply and cost of water to the City.
Ordinance No. 1063 is located within Appendix F. This Ordinance includes provisions
stating that at no time shall water be wasted or used unreasonably. The ordinance is
phased into four water conservation stages from voluntary compliance to mandatory
' compliance. The ordinance prohibits "gutter flooding," where water is wasted from
inefficient irrigation practices or any other water usage onto any public street or alley.
' Ordinance No. 1063 is also incorporated into the City's Water Shortage Contingency
Plan to comply with Section 10631(e)(6) of the Act "Penalties or charges for excessive
use. " Resolution 92-49 amends Ordinance No. 1063 by rescinding all additional charges
and penalties for excessive water use based on Metropolitan's adjustment in voluntary
water use reduction. Metropolitan had imposed severe financial penalties on the City if it
had not achieved a 30 percent reduction in imported water purchases during the last
drought of 1988-1992; however, in 1992, Metropolitan modified its requirements in 1992
to request a voluntary 10 percent reduction in water use and rescinded its penalties for
excessive use.
DMM 14 — Residential Ultra-Low-Flush Toilet (ULFT) Program
The ULFT Program is sponsored by the Water Use Efficiency Steering Committee,
which includes OCWD, MWDOC, OCSD and cities and water districts in Orange
County. The Steering Committee participates in underwriting the no-cost, ULFT program
that encourages county residents to replace inefficient toilets. The program has targeted
to replace 900,000 residential toilets in Orange County, creating an annual savings of
approximately 25,000 AF of water per year.
' TWS customers have participated in various regional programs that are jointly funded
from the foregoing entities through ULFT give-aways and ULFT rebate programs. Since
the inception of the ULFT program in 1995-96, TWS has successfully installed 9,451
ULFT's, with a total of 4,713 ULFTs installed between 2000/01 to present, as shown in
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Table 6.3-8 below. Approximately 21.2-27.2 gallons of water per day are saved with the
installation of the ULFTs for single family and 36.7-63.7 gallons per day per device for
multi-family.
Table 6.3-8
DMM 14 — TWS Residential ULFT Replacements
2060/01 2001/02 2002/03 :,=2003/04'` 2004/05 2005106 2006/07 '
# of ULFTs 1,508 1,206 1,096 827 69 7 400 ,
Water
Savings 40 33 30 22 2 .2 2.35
AFY
Source: MWDOC, Draft 2005 Regional Urban Water Management Plan
The method to measure effectiveness will include a calculation of the total number of
ULFT's and rebates distributed throughout the service area, the resulting water savings,
and the changes in water demand following implementation of the ULFT's. '
ADDITIONAL WATER CONSERVATION PROGRAMS ,
TWS has implemented additional water conservation related activities. TWS is
continuing to work toward the development and implementation of customer outreach '
programs designed to identify high water consumption. TWS is dedicated to being
responsive to broken sprinklers and water misuse when notified by its customers. Upon
identification of high water consumption or misuse, TWS will efficiently investigate the
report and inform the customer of any problems found, as well as possible water
conservation measures. ,
For Orange County, a MWDOC Industrial Process Water Use Reduction Program was
approved for full funding under the DWR Water Use Efficiency Grant Program at ,
$404,801. It is anticipated that the project, once implemented, will result in a total water
savings of 689 AFY, meeting CALFED Benefits. The program will result in both local '
and state benefits. The programs' main purpose is to promote water conservation, such as
reducing wastewater flows to treatment plants and decreasing pollution along costal
waters.
At the regional level, Metropolitan proposed five water conservation programs for
funding under the DWR Water Use Efficiency Grant Program. These programs will '
benefit member agencies, including MWDOC and its member agencies. Therefore, TWS
will benefit from the implementation of the programs. The programs include the ,
following:
• Residential Hieh Efficiency Clothes Washer Rebate Program - The Residential
High Efficiency Clothes Washer Rebate Program offers rebates toward the
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purchase of water- and energy-saving clothes washing machines, which will
' reduce the demand on water imported from the Bay Delta by 12,275 AFY. This 2-
year program was funded at $1.66 million.
' • California Friendly Communities - The program will result in CALFED Benefits,
which include avoiding Bay Delta diversions. California Friendly Communities is
a grant program in which cities receive funding to transform their landscape to
increase water conservation. A maintenance plan, enhanced irrigation and
controllers, and landscaping techniques are exercised through this program. This
' program received $424,150 in funding for 1,650 valves for multi-family
residences.
' • High-Efficiency Toilet Rebate Program — A rebate is given to customers who
purchase a new High Efficiency Toilet. The toilet uses a minimum of 20% less
' water than standard toilets and will supply 41 AFY of water savings. This
program was funded at $1.0 million for a total of 10,000 ULFTs.
• Online/Web-Based Irrigation Efficiency Training — This program will provide
two class courses for residential and professional participants, as well as educate
individuals about water use, efficiency training, and educational programs. DWR
funded one residential series class and two classes from the professional course
' for a total of$77,500.
6.4 WATER USE EFFICIENCY EFFECTIVENESS
The Orange County Water Plan, Focus on Orange County's Water Future, as discussed
' in MWDOC's 2005 Regional UWMP, adapts and applies the Metropolitan-Main Model.
The Model forecasts water demands on both a regional basis and at the retail level to
' produce an estimate of future water demand, the identification of potential benefits, and
costs associated with implementation of the DMMs. The conservation potential by
individual retail water agencies will be used to develop DMM implementation plans
using a "least cost approach" to develop a "most cost effective" package of DMM
programs customized for each retail agency. A Conservation Savings Model estimates the
potential water conservation from implementation of the DMMs. Once the potential
water savings are quantified, programs can be developed to target potential savings.
Quantifiable DMM programs include ULF toilet and low-flow showerhead retrofits,
water audits and conservation pricing. Programs and activities that are not quantifiable,
but known to save water, include public information, school education, conservation
coordinator, water waste prohibitions, and metering with commodity rates.
Water use efficiency is an integral part of water supply planning and operations. TWS
works to improve the understanding of costs and benefits of conservation so that
investment decisions are efficient and effective at meeting program goals. As a
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cooperative member of California's conservation community, TWS supports MWDOC's
significant contributions to the development and coordination of water use efficiency '
activities for its member agencies and throughout Orange County.
Many of the DMMs have been implemented based upon the MOU schedule, others are '
being implemented, and all DMMs will continue on an ongoing basis. TWS will continue
to work cooperatively with MWDOC to implement cost-effective DMMs. '
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SECTION 7
WATER SHORTAGE CONTINGENCY PLAN
7.1 INTRODUCTION
' One dry year does not constitute a drought in California, but does serve as a reminder of
the need to plan for droughts. California's extensive system of water supply
infrastructure, its reservoirs, groundwater basins, and inter-regional conveyance facilities,
mitigates the effects of most short-term dry periods. Defining when a drought begins is a
function of drought impacts to water users. Drought is a gradual phenomenon. Although
' droughts are sometimes characterized as emergencies, they differ from typical emergency
events. Droughts occur slowly, over a multiyear period. Drought impacts increase with
the length of a drought, as carry-over supplies in reservoirs are depleted and water levels
' in groundwater basins decline.
In order to meet short-term water demand deficiencies, and short- or long-term drought
requirements, TWS has implemented its own water shortage policy, Water Shortage
Contingency Plan, through adoption of Resolution No. 92-15, January 1992. The Plan is
' in accordance with MWDOC and OCWD water shortage/drought activities. TWS will
respond to MWDOC's water shortage and drought management policy, which is based
on Metropolitan's adopted Water Surplus and Drought Management Plan (WSDM Plan).
The WSDM Plan guides the management of regional water supplies to achieve the
reliability goals of Southern California's Integrated Water Resource Plan. Details of the
WSDM Plan can be reviewed in the Metropolitan 2005 Regional Urban Water
Management Plan.
7.2 STAGES OF ACTION
' In order to meet short-term water demand deficiencies, and short- or long-term drought
requirements, TWS will implement its own Water Shortage Contingency Plan, as adopted
on February 3, 1992 through City Resolution No. 92-15. A copy of the Water Shortage
Contingency Plan is included in Appendix F. In a water shortage emergency, TWS would
request the City Council to invoke the City's Water Management Program, Ordinance
No. 1060, adopted by the City Council of the City of Tustin on March 18, 1991, and is
also included in Appendix F. Depending on seasonal demand considerations, one of four
stages of the Ordinance would be implemented. Ordinance No. 1060 delineates the stages
of action that will be taken if up to a 50 percent reduction in water supply occurs.
Ordinance No. 1063, which established a Mandatory Water Conservation and Rationing
Program to reduce consumption by 15 percent, was adopted by the City Council on April
1, 1991.
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Rationing Stages and Reduction Goals
The City's Ordinance No. 1060 identifies four stages of action that may be implemented ,
in the event of a declared water shortage, based on the severity of the shortage. The City
prohibits the waste of water throughout the TWS service area. In addition, the following ,
stages shall be enforced, as appropriate, based on the extent of the water shortage:
Stage I — Voluntary Compliance — Water Watch. Applies during the possibility that the
City will not be able to meet the demand of its customers. Stage 2 elements apply on a
voluntary basis.
Stage 2 — Mandatory Compliance — Water Alert. Applies during periods when the '
probability exists that the City will not be able to meet all of the water demands of its
customers or when statewide shortages cause a need for local conservation measures to
be implemented. The following water conservation measures shall apply except when ,
reclaimed or recycled water is used:
1. Lawn watering and landscape irrigation is limited to 1 Oam to 6pm and hand-held ,
hoses, buckets, and drip irrigation must be used. Watering is on an as-needed
basis.
2. Water shall not be used to wash down streets, gutters, sidewalks, driveways,
parking areas, tennis courts, patios, pool decks, or other paved areas, except to
alleviate immediate fire or sanitation hazards.
3. Washing of specific mobile equipment shall be done with hand-held bucket or
hose equipped with a shut-off nozzle. Commercial car washes are permitted to ,
wash at any time. Washing is exempted from these regulation where health, safety
and welfare of the public is contingent upon frequent vehicle cleaning such as
garbage trucks and vehicles used to transport food and perishables. ,
4. Watering parks, school grounds, public facilities, and recreation fields is not
permitted between the hours of 10 am and 4pm. ,
5. Restaurants shall not serve water to their customers except when specifically
requested. '
6. The operation of any ornamental fountain or similar structure is prohibited unless
reclaimed water is used. ,
7. Agriculture users and commercial nurseries are exempt from Stage 2 irrigation
restrictions, but will be required to curtail all non-essential water use. '
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Stage 3 — Mandatory Compliance — Water Warning. Applies during periods when the
City will not be able to meet all the water demands of its customers. The following will
apply:
1. Lawn watering and landscape irrigation is limited to 6pm to 6am and hand-
held hoses, buckets, and drip irrigation must be used. Watering is on an as-
needed basis. A designated irrigation day is determined by the last digit in the
street address.
2. Water shall not be used to wash down streets, gutters, sidewalks, driveways,
' parking areas, tennis courts, patios, pool decks, or other paved areas, except to
alleviate immediate fire or sanitation hazards.
' 3. Washing of specific mobile equipment shall be done with hand-held bucket or
hose equipped with a shut-off nozzle. Commercial car washes are permitted to
wash at any time. Washing is exempted from these regulation where health,
safety and welfare of the public is contingent upon frequent vehicle cleaning
such as garbage trucks and vehicles used to transport food and perishables.
4. Watering parks, school grounds, public facilities, and recreation fields is not
permitted between the hours of 6 pm and 6 am.
5. The use of water from fire hydrants shall be limited to fire fighting and related
activities, or other activities necessary to maintain the health, safety and
welfare of the public.
6. Agricultural users and commercial nurseries shall use water only between the
hours of 6 pm and 6 am.
7. Restaurants shall not serve water to their customers except when specifically
requested.
8. The operation of any ornamental fountain or similar structure is prohibited
unless reclaimed water is used.
' 9. All water leaks shall be repaired immediately.
10. Construction water shall not be used for earthwork or road construction
' purposes unless authorized as a mitigation or erosion control, compaction or
backfilling earthwork or as required by the Air Quality Management Plan
' (AQMP) Control Measure F-4.
11. Exceptions: The prohibited uses of water are not applicable to that use of
water necessary for public health and safety or for essential governmental
' services such as police, fire and other similar emergency services.
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Stage 4—Mandatory Compliance — Water Emergency. Applies when a major failure of
any supply or distribution facility, whether temporary or permanent, occurs in the water ,
distribution system of the State Water Project, Metropolitan, MWDOC, EOCWD or City
facilities. During Stage 4, the following water conservation measures shall apply except
when reclaimed or recycled water is used: '
1. All outdoor irrigation of vegetation is prohibited.
2. Water shall not be used to wash down streets, gutters, sidewalks, driveways, '
parking areas, tennis courts, patios, pool decks, or other paved areas, except to
alleviate immediate fire or sanitation hazards. ,
3. Washing of specific mobile equipment shall be done with hand-held bucket or
hose equipped with a shut-off nozzle. Commercial car washes are permitted to '
wash at anytime. The use of water by all types of commercial car washes shall be
reduced in volume by 50%. Washing is exempted from these regulation where
health, safety and welfare of the public is contingent upon frequent vehicle '
cleaning such as garbage trucks and vehicles used to transport food and
perishables. '
4. Filling, refilling or adding of water to swimming pools, spas, ponds, and artificial
lakes is prohibited.
5. Watering parks, school grounds, public facilities, and recreation fields is ,
prohibited with the exception of plant materials classified to be rare, exceptionally
valuable or essential to the well being of rare animals. ,
6. The use of water from fire hydrants shall be limited to fire fighting and related
activities, or other activities necessary to maintain the health, safety and welfare
of the public.
7. Use of water for agricultural users and commercial, except for livestock watering, '
is prohibited.
8. Restaurants shall not serve water to their customers except when specifically ,
requested.
9. The operation of any ornamental fountain or similar structure is prohibited unless '
reclaimed water is used.
10. New construction meters or permits for unmetered service will not be issued.
Construction water shall not be used for earth work or road construction purposes. '
11. The use of water for commercial, manufacturing or processing purposes shall be
reduced in volume by 50%. ,
12. No water shall be used for air conditioning purposes.
13. All water leaks shall be repaired immediately. ,
14. Exceptions: The prohibited uses of water are not applicable to that use of water
necessary for public health and safety or for essential governmental services such '
as police, fire and other similar emergency services.
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TWS's Water Shortage Contingency Plan will be implemented in coordination with the
policy of MWDOC, which is anticipated to be based on Metropolitan's WSDM Plan. The
WSDM Plan defines the expected sequence of resource management actions
Metropolitan will take during surpluses and shortages of water to minimize the
probability of severe shortages that require curtailment of full-service demands. The
MWDOC 2005 Regional UWMP details each of the surplus and shortage stages, actions
by stage and allocation of supply for M&I demand. Mandatory allocations are avoided to
the extent practicable, however, in the event of an extreme shortage, an allocation plan
will be adopted in accordance with the principles of the WSDM Plan.
' Metropolitan WSDM Plan
In 1999, Metropolitan in conjunction with its member agencies developed the WSDM
Plan. This plan addresses both surplus and shortage contingencies on a regional basis.
The WSDM Plan will guide management of regional water supplies to achieve the
' reliability goals of Southern California's IRP. The IRP sought to meet long-term supply
and reliability goals for future water supply planning. The WSDM Plan guiding principle
is to minimize adverse impacts of water shortage and ensure regional reliability. From
' this guiding principle come the following supporting principles:
• Encourage efficient water use and economical local resource programs.
' • Coordinate operations with member agencies to make as much surplus water as
possible available for use in dry years.
• Pursue innovative transfers and banking programs to secure more imported water
' for use in dry years.
• Increase public awareness about water supply issues.
The WSDM Plan guides the operations of water resources (local resources, Colorado
' River, State Water Project, and regional storage) to ensure regional reliability. It
identifies the expected sequence of resource management actions Metropolitan will take
during surpluses and shortages of water to minimize the probability of severe shortages
' that require curtailment of full-service demands. Mandatory allocations are avoided to the
extent practicable, however, in the event of an extreme shortage an allocation plan will be
adopted in accordance with the principles of the WSDM Plan.
' The WSDM Plan distinguishes between Surpluses, Shortages, Severe Shortages, and
Extreme Shortages. Within the WSDM Plan, these terms have specific meaning relating
to Metropolitan's capability to deliver water to the City, and are defined as follows:
' Surplus: Metropolitan can meet full-service and interruptible program demands, and it
can deliver water to local and regional storage.
Shortage: Metropolitan can meet full-service demands and partially meet or fully meet
interruptible demands, using stored water or water transfers as necessary.
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Severe Shortage: Metropolitan can meet full-service demands only by using stored
water, transfers, and possibly calling for extraordinary conservation. In a Severe '
Shortage, Metropolitan may have to curtail Interim Agricultural Water Program (IAWP)
deliveries in accordance with IAWP.
Extreme Shortage: Metropolitan must allocate available supply to full-service 1
customers.
The WSDM Plan also defines five surplus management stages and seven shortage ,
management stages to guide resource management activities. Each year, Metropolitan '
will consider the level of supplies available and the existing levels of water in storage to
determine the appropriate management stage for that year. Each stage is associated with
specific resource management actions designed to: (1) avoid an Extreme Shortage to the ,
maximum extent possible; and (2) minimize adverse impacts to retail customers should
an "Extreme Shortage" occur. The current sequencing outline in the WSDM Plan reflects
anticipated responses based on detailed modeling of Metropolitan's existing and expected '
resource mix. This sequencing may change as the resource mix evolves.
WSDM Plan Shortage Actions by Shortage Stage 1
When Metropolitan must make net withdrawals from storage, it is considered to be in a
shortage condition. However, under most of these stages, it is still able to meet all end-
use demands for water. The following summaries describe water management actions to ,
be taken under each of the seven shortage stages:
Shortage Stage 1. Metropolitan may make withdrawals from Diamond Valley Lake. ,
Shortage Stage 2. Metropolitan will continue Shortage Stage 1 actions and may draw
from out-of-region groundwater storage. ,
Shortage Stage 3. Metropolitan will continue Shortage Stage 2 actions and may
curtail or temporarily suspend deliveries to Long Term Seasonal and Replenishment
Programs in accordance with their discounted rates.
Shortage Stage 4. Metropolitan will continue Shortage Stage 3 actions and may draw '
from conjunctive use groundwater storage (such as the North Las Posas program) and
the SWP terminal reservoirs. '
Shortage Stage 5. Metropolitan will continue Shortage Stage 4 actions. '
Metropolitan's Board of Directors may call for extraordinary conservation through a
coordinated outreach effort and may curtail Interim Agricultural Water Program
deliveries in accordance with their discounted rates. In the event of a call for
extraordinary conservation, Metropolitan's Drought Program Officer will coordinate
public information activities with member agencies and monitor the effectiveness of '
ongoing conservation programs. The Drought Program Officer will implement
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monthly reporting on conservation program activities and progress and will provide
quarterly estimates of conservation water savings.
Shortage Stage 6. Metropolitan will continue Shortage Stage 5 actions and may
exercise any and all water supply option contracts and/or buy water on the open
market either for consumptive use or for delivery to regional storage facilities for use
' during the shortage.
Shortage Stage 7. Metropolitan will discontinue deliveries to regional storage
' facilities, except on a regulatory or seasonal basis, continue extraordinary
conservation efforts, and develop a plan to allocate available supply fairly and
efficiently to full-service customers. The allocation plan will be based on the Board-
adopted principles for allocation listed previously. Metropolitan intends to enforce
these allocations using rate surcharges. Under the current WSDM Plan, the
surcharges will be set at a minimum of $175 per AF for any deliveries exceeding a
member agency's allotment. Any deliveries exceeding 102% of the allotment will be
assessed a surcharge equal to three times Metropolitan's full-service rate.
The overriding goal of the WSDM Plan is to never reach Shortage Stage 7, an Extreme
Shortage. Given present resources, Metropolitan fully expects to achieve this goal over
the next ten years.
Reliability Modeling of the WSDM Plan
Using a technique known as "sequentially indexed Monte Carlo simulation,"
Metropolitan undertook an extensive analysis of its regional water system including
reservoirs, forecasted demands, and probable hydrologic conditions to estimate the
likelihood of reaching each Shortage Stage through 2010. The results of this analysis
demonstrated the benefits of coordinated management of regional supply and storage
resources. Expected occurrence of a Severe Shortage is four percent or less in most years
and never exceeds six percent; equating to an expected shortage occurring once every 17
to 25 years. An Extreme Shortage was avoided in every simulation run.
Metropolitan also tested the WSDM Plan by analyzing its ability to meet forecasted
demands given a repeat of the two most severe California droughts in recent history.
Hydrologic conditions for the years 1923-34 and 1980-91 were used in combination with
demographic projections to generate two hypothetical supply and demand forecasts for
the period 1999-2010. Metropolitan then simulated operation to determine the extent of
regional shortage, if any. The results again indicate 100 percent reliability for full-service
demands through the forecast period.
Allocation of Supply for M&I Demands
The equitable allocation of supplies is addressed by the Implementation Goals for the
WSDM Plan, with the first goal being to "avoid mandatory import water allocations to
the extent practicable." The reliability modeling for the WSDM Plan discussed above
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results in 100 percent reliability for full-service demands through the year 2010.
However, the second fundamental goal of the WSDM Plan is to "equitably allocate '
imported water on the basis of agencies' needs." Factors for consideration in establishing
the equitable allocation include retail and economic impacts, recycled water production,
conservation levels, growth, local supply production, and participation and investment in '
Metropolitan's system and programs. In the event of an extreme shortage, an allocation
plan will be adopted in accordance with the principles of the WSDM Plan. ,
In an effort to avoid allocation, imported water reliability is planned through the Southern
California IRP and the WSDM Plan. The IRP presents a comprehensive water resource '
strategy to provide the region with a reliable and affordable water supply for the next 25
years. The WSDM Plan will guide management of regional water supplies to achieve the '
reliability goals of the IRP.
Under a drought scenario, OCWD may have Metropolitan replenishment water
temporarily unavailable to them for replenishment of the Groundwater Basin. OCWD
would first attempt to purchase other water supplies at a similar cost to replace the
Metropolitan source. If no alternative water supply sources are economically available, ,
OCWD may temporarily mine the Basin by increasing the BPP to meet local demand and
refill it in the future. OCWD used this strategy during the later years of the 1986-92 ,
drought period. If this option is not available, then OCWD may lower the current BPP to
match the Basin's Dependable Yield. Under this last scenario, the TWS may request
increased imported water along with conservation and water use efficiency measures by '
customers to meet demand. The OCWD Master Plan Report, Chapter 14 — Basin
Management Issues, further describes OCWD activities that may affect the City during a '
declared drought.
Health and Safety Requirements '
The primary goal of the TWS's water system is to preserve the health and safety of its
customers and personnel. Meeting this goal is a continuous function of the system — '
before, during and after a disaster or water shortage. Fire suppression capabilities will
continue to be maintained during any water shortage contingency stage. Some water
needs are more immediate than others. The following list of public health needs and the
allowable time without potable water is a guideline and will depend on the magnitude of
a given water shortage event: '
• Hospitals—continuous need
• Emergency shelters—immediate need '
• Kidney dialysis—24 hours
• Drinking water— 72 hours
• Personal hygiene, waste disposal — 72 hours
Based on commonly accepted estimates of interior residential water use in the United 1
States, Table 7.2-1 indicates per capita health and safety water requirements. During the
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initial stage of a shortage, customers may adjust either interior and/or outdoor water use
in order to meet the voluntary water reduction goal.
' Table 7.2-1
Per Capita Health and Safety Water Quantity Calculations
Non Conserving ''t1j ,Conserving;' °
-` ' Fixtures Habit Changes Fixtures
Toilet 5 flushes x 5.5 gpf 27.5 3 flushes x 5.5 gpf 16.5 5 flushes x 1.6 gpf 8.0
' Shower 5 min. x 4.0 gipm 20.0 4 min. x 3.0 gpm 12.0 4 min. x 2.5 gpin 10.0
Washer 12.5 gpcd 12.5 11.5 gpcd 11.5 11.5 gpcd 11.5
Kitchen 4 gpcd 4.0 4 qlaccl 4.0 4 gpcd 4.0
Other 4 gpcd 4.0 4 gpcd 4.0 4 gpcd 4.0
Total 1 68.0 48.037.5
CCF per capita per year 33.0 23.0 18.0
Source: 2000 MWDOC RUWMP
gpcd=gallons per capita per day gpm=gallons per minute
gpf=gallons per flush cef=hundred cubic feet
P] Reduced shower use results from shorter and reduced flow. Reduced washer use results from
fuller loads.
tel Fixtures include ULF 1.6 gpf toilets, 2.5 gpm showerheads, and efficient clothes washers.
Priority by Use
Conditions prevailing in the TWS area require that the water resources available be put to
maximum beneficial use to the extent to which they are capable. The waste or
unreasonable use, or unreasonable method of use, of water should be prevented and that
' water conservation and water use efficiency is encouraged with a view to the maximum
reasonable and beneficial use thereof in the interests of the people of the TWS and for the
public welfare. Preservation of health and safety will be a top priority for the TWS.
' 7.3 ESTIMATE OF MINIMUM SUPPLY FOR NEXT THREE YEARS
According to MWDOC, Metropolitan projects 100 percent reliability for full-service
demands through the year 2030.70 Additionally, through a variety of groundwater
reliability programs conducted by OCWD and participated in by the City, local supplies
are projected to be maintained at demand levels. TWS anticipates the ability to meet
water demand through the next three years based on the driest historic three-years as
shown in Table 7.3-1.
70 Metropolitan Water District of Southern California,2005 UWMP.
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Table 7.3-1
Total Estimated Minimum Water Supply Based on Driest 3-Year History
(AF)
Source ?006 J,; 2007
'200& 20081 2007 -20085 t
BlseYear Base Base
Dr' -
-
Year- D "YearDrYearjy
Imported 1,520 1,480 1,440 1,490 1,450 1,410
Treated 4,000 4,000 4,000 4,000 4,000 4,000
Groundwater
Clear 7,370 7,400 7,430 9,760 9,690 9,620
Groundwater I I I I I
Total 1 12,890 1 12,880 1 12,870 1 15,250 1 15,140 15,030
Data extracted from Table 4.2-6; MWD supply of imported water assumed to equal only 98.2%of average supply as is
the case in 2008-2010: BPP assumed to be 64% in all years; total minimum supply of clear groundwater assumed to
equal 64%of total estimated water supply
7.4 CATASTROPHIC SUPPLY INTERRUPTION PLAN
The Tustin City Council adopted the Water Shortage Contingency Plan on February 3,
1992, by Resolution No. 92-15, which are both shown in Appendix F. This four-stage
program, known as the Water Management Program, establishes water conservation
measures ranging from a voluntary 10 percent reduction at Stage 1, through a mandatory
50 percent reduction at Stage 4. Resolution No. 92-15 provides TWS the ability to obtain
a higher level of water efficiency and allows the City Manager, through Council
ratification, the flexibility to adjust to any rapidly varying water supply situation.
7.5 PROHIBITIONS, CONSUMPTION REDUCTION METHODS AND
PENALTIES
Any violation of the TWS's Water Management Program, including waste of water and
excessive use, is a misdemeanor. In addition to any other remedies that TWS may have
for enforcement, service of water would be discontinued or appropriately limited to any
customer who willfully uses water in violation of any provision of the ordinance.
The City prohibits the waste of water throughout the TWS service area and enforces four
stages of water conservation, as established through Ordinance No. 1060. The stages and
prohibitions are summarized in Section 7.2. Stage 4 of the water conservation stages
implements mandatory compliance measures where prohibitions are strongly enforced
and the City may, by resolution, enforce measures to implement a 50% consumption
reduction in water use.
The City shall monitor the projected supply and demand for water by its customers on a
daily basis. The City Manager shall determine the extent of the conservation required
through the implementation and/or termination of particular conservation stages in order
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for the City to prudently plan for and supply water to its customers. Thereafter, the City
' Manager may order that the appropriate stage of water conservation be implemented or
terminated in accordance with the applicable provision of the Ordinance. The declaration
of any stage beyond Stage 1 shall be made by public announcement and notice shall be
published a minimum of three (3) consecutive times in a newspaper of general
circulation. The stage designation shall become effective immediately upon
announcement. The declaration of any stage beyond State 1 shall be reported to the City
Council at its next regular meeting. The City Council shall thereupon ratify the
declaration, rescind the declaration, or direct the declaration of a different stage.
' Failure to comply will result in the following actions, as established in Ordinance No.
1060:
a) Stage 1 Violation— Written notice from City to violator.
' b) Stage 2 Violation—Citations will be issued to violators. The first violation by any
violator shall subject the violator to a fine of$25. A second violation will result in
a fine of$35. A third violation will result in a fine of$45. A fourth violation will
' result in a fine of$55.
c) The fifth violation allows the City to install a flow restricting device in the
' customer's water service line for a period not less than 48 hours and until the
customer satisfies the City that the failure to comply will not continue. The charge
for installing and removing the flow restricting device shall be $65 and shall be
paid by the customer prior to removal.
d) For the sixth and each subsequent violation, the City may discontinue water
' service for a period of not less than 24 hours and until the customer satisfies the
City that the failure to comply will not continue. The customer shall pay $70 for
' restoration of water service:
In addition to Ordinance No. 1060; the City passed Ordinance No. 1063 on April 1, 1991
' that established a Mandatory Water Conservation and Rationing Program to further
implement water conservation measures. In an extreme shortage, Ordinance No. 1060
will be superseded with the water conservation and penalties established in Ordinance No
1063.
' The Program establishes water usage limits for each customer and additional charges to
be imposed if a violation of the usage occurs. For every billing unit over and above the
allowable water usage, a charge of ninety cents shall be imposed. If two consecutive
billing periods show water usage exceeding the Allowable Water Usage, an additional
surcharge of twenty0five percent of the total amount of the bill (including the additional
' ninety cents per Billing Unit) will be imposed. After the third consecutive billing period
where water usage exceeds the Allowable Water Usage a surcharge of fifty percent of the
total bill (including the additional ninety cents per Billing Unit) will be imposed.
' For consecutive billing periods, four or more of which exceed the Allowable Water
' Usage, the City may install a flow restricting device to reduce the amount of water
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supplied to the customer and a surcharge of seventy-five percent of the total charge shall
be imposed will be added to the total bill for all periods exceeding the allowable usage. ,
The device shall not be removed until such time as the customer has provided proof
satisfactory to the City that the customer will not exceed the allowable usage charge. A
fee of fifty dollars shall be charged for installing the flow restricting device. Penalties '
shall appear on the first billing statement for that account immediately after the Billing
Period in which the excess water usage occurred. The penalty shall be paid at the same
time as the payment for normal water service. Failure to pay the entire amount due shall
incur the same penalties as those imposed for failure to pay for normal water service.
Any excess revenues received by the City from the additional charges and penalties ,
imposed due to Ordinance No. 1063 that are greater than the additional charges and '
penalties paid by the City to the MWD, shall be used by the City solely for capital
improvement costs of water facilities. The City may revised the allowable water usage
and the charges, surcharges, and penalties as deemed necessary to accommodate water ,
allocations, charges, and penalties imposed by Metropolitan and other factors. Such
resolutions shall become effective within ten days of their adoption, be published in a
newspaper of general circulation, printed, published, and circulated throughout the City
of Tustin.
TWS will also follow the allocation plan guidelines of MWDOC as adopted by
Metropolitan once an extreme shortage is declared. This allocation plan will be enforced
by Metropolitan using rate surcharges. MWDOC will follow the guidelines of the '
allocation plan and impose the surcharge that Metropolitan applies to its member
agencies that exceed their water allocation. ,
7.6 ANALYSIS OF REVENUE IMPACTS OF REDUCED SALES DURING
SHORTAGES '
TWS receives water revenue from a commodity charge and a fixed service charge. The
rates have been designed to recover the full cost of water service in the commodity and ,
service charges. Therefore, the total cost of purchasing water and producing groundwater
would decrease as the usage or sale of water decreases. Should an extreme shortage be '
declared and a large reduction in water sales occur for an extended period of time, TWS
would monitor projected revenues and expenditures, and then reexamine its water rate
structure. '
7.7 WATER SHORTAGE CONTINGENCY ORDINANCE ,
Under normal conditions, potable water production figures are recorded daily. Weekly ,
and monthly reports are prepared and monitored. This data will be used to measure the
effectiveness of any water shortage contingency stage that may be implemented.
TWS will implement its Water Shortage Contingency Plan, as adopted by the City
Council on February 3, 1992 through Resolution No. 92-15. Ordinances No. 1060 and
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No. 1063 of the Water Shortage Contingency Plan impose prohibitions, regulations of
water use, and penalties for violations of water use during times of sever water shortages.
' As stages of water shortage are declared by MWDOC, TWS will follow implementation
of those stages and continue to monitor water demand levels. It is not until Shortage
Stage 5 that Metropolitan may call for extraordinary conservation. During this stage,
' Metropolitan's Drought Program Officer will coordinate public information activities
with MWDOC and monitor the effectiveness of ongoing conservation programs.
Monthly reporting on estimated conservation water savings will be provided.
' TWS will participate in monthly member agency manager meetings with both MWDOC
' and OCWD to monitor and discuss monthly water allocation charts. This will enable
TWS to be aware of imported and groundwater use on a timely basis as a result of
specific actions taken responding to the Water Shortage Contingency Plan.
7.8 MECHANISMS TO DETERMINE ACTUAL REDUCTIONS IN WATER
' USE
' Water Shortage Emergency Response
A water shortage emergency could be catastrophic event such as result of drought,
failures of transmission facilities, a regional power outage, earthquake, flooding, supply
contamination from chemical spills, or other adverse conditions. TWS maintains and
exercises a comprehensive Emergency Management Program for such emergencies
' including Water Shortage Emergency Response.
' The Water Shortage Emergency Response Plan includes the organizational and
operational policies and procedures required to meet the needs of sufficient water for
firefighting operations and safe drinking water, and provides a system for organizing and
prioritizing water repairs. It also cites authorities and specifies the public and private
organizations responsible for providing water service.
TWS will operate under normal operating procedures until a situation is beyond its
control. This includes implementation of any allocation plan passed through by MWDOC
' for Metropolitan and water shortage contingency plans of OCWD.
If the situation is beyond TWS's control, the City's Emergency Operations Center (EOC)
' may be activated to better manage the situation. If the situation warrants, the EOC may
be activated at which time a water representative will be sent to the EOC to coordinate
water emergency response.
In the event the EOC is activated, the City Management Policy Group will set priorities.
When the EOC is activated, the TWS will take its direction from the EOC. An EOC
Action Plan will be developed in the EOC that will carry out the policies dictated by the
1
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1
Policy Group. The TWS will use the EOC Action Plan in determining its course of
action. '
If the situation is beyond TWS and the City's control, additional assistance will be sought
through coordination with the Water Emergency Response Organization of Orange ,
County (WEROC) and the County Operational Area.
Water Emergency Response Organization of Orange County (WEROC)
In 1983, the Orange County water community developed a Water Supply Emergency '
Preparedness Plan to respond effectively to disasters impacting the regional water
distribution system. This plan was jointly funded by three regional water agencies: '
Coastal Municipal Water District, MWDOC, and OCWD, with the support and guidance
from the Orange County Water Association (OCWA). The collective efforts of these
agencies resulted in the formation of the countywide Volunteer Emergency Preparedness '
Organization. This entity was later replaced in the mid 1990s by the Water Emergency
Response Organization of Orange County. WEROC is unique in its ability to provide a
single point of contact for water representation in Orange County during a disaster. ,
WEROC facilitates coordination of information and mutual-aid requests among Orange
County water agencies, and conducts disaster training exercises for the Orange County ,
water community and with Metropolitan. The MWDOC 2000 Regional Urban Water
Management Plan, Section 7, presents the details of WEROC.
TWS actively participates in the WEROC training exercises and provides WEROC with '
listing of equipment, vehicles, and materials that can be made available to other agencies ,
during an emergency.
Additional emergency services available to TWS through the State of California include
the Master Mutual Aid Agreement, WARN and Plan Bulldozer. The Master Mutual Aid
Agreement includes all public agencies that have signed the agreement and is planned
through the California Office of Emergency Services. The California Water Agencies ,
Response Network (WARN) includes all public agencies that have signed the agreement
to WARN and provides mutual aid assistance. WARN is managed by a State Steering '
Committee. Plan Bulldozer provides mutual aid for construction equipment to any public
agency for the initial time of disaster when danger to life and property exists.
1
1
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2005 Urban Water Management Plan Section 8
SECTION 8
WATER RECYCLING
8.1 RECYCLED WATER IN SOUTHERN CALIFORNIA
' The southern California region, from Ventura to San Diego is estimated to discharge over
1 billion gallons (1.1 million AFY) of treated wastewater to the ocean each day. This is
considered a reliable and drought-proof water source and could greatly reduce the areas'
' and the TWS's reliance on imported water. As technological improvements continue to
reduce treatment costs, and as public perception and acceptance continue to improve,
numerous reuse opportunities should develop. Recycled water is a critical part of the
California water resource management picture because of the strong drought potential
and as technology continues to improve, demand continues to increase for its use.
1
' 8.2 COORDINATION OF RECYCLED WATER IN SERVICE AREA
Currently, the TWS does not utilize or serve directly applied recycled water to any of its
' customers or for municipal purposes. However, the TWS produces a majority of its water
supply from the Basin. OCWD utilizes recycled water generated from Orange County
Sanitation District's (OCSD) treatment facilities to protect the Basin through seawater
' intrusion barriers and groundwater recharge basins. The TWS, therefore, indirectly
benefits from this regional use of recycled water. The regional projects are discussed later
in this section.
8.3 WASTEWATER COLLECTION AND TREATMENT IN THE CITY
SERVICE AREA
' Wastewater from the TWS's water service area is collected and treated by OCSD. OCSD
operates and maintains the localized sewer branches that feed into OCSD's trunk system
from the TWS area. The Tustin sewer system includes approximately 51.5 miles of
mostly 8-inch vitrified clay pipe (VCP) sewer lines and 1,033 manholes. Sewer
infrastructure in the TWS is currently owned and operated by OCSD, as well as by Irvine
Ranch Water District in the newer sections of the TWS, including Peters Canyon.
OCSD operates the third largest wastewater system on the West Coast, consisting of
nearly 600 miles of trunk sewers and 200 miles of subtrunk sewers, two regional
treatment plants, and an ocean disposal system. The OCSD sewerage system collects
wastewater through an extensive system of gravity flow sewers, pump stations, and
pressurized sewers (force mains). The sewer system consists of 12 trunk sewer systems
ranging in size from 12 to 96 inches in diameter and collectively over 500 miles long.
Additionally, there are 39 sewer interconnections and 87 diversions to maximize
conveyance of flows through the system. Twenty pump stations are used to pump sewage
from lower lying areas to the treatment plants.
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Orange County Sanitation Districts (OCSD) Treatment Plants
OCSD's Reclamation Plant No. 1 is located in the City of Fountain Valley about 4 miles ,
northeast of the ocean and adjacent to the Santa Ana River. The plant provides advanced
primary and secondary treatment and supplies secondary treatment water to OCWD '
which further treats and distributes the water for various uses, including irrigation,
groundwater recharge, and operation of coastal seawater barrier system. '
The treatment process at Reclamation Plant No. 1 includes secondary treatment through
an activated sludge system. This plant receives raw wastewater from six major sewer '
pipes, often called "interceptors" or "trunk lines." The secondary effluent is either
blended with the advanced primary effluent and routed to the ocean disposal system, or is '
sent to the OCWD facilities for advanced treatment and recycling. The solid materials
removed in the treatment systems are processed in large tanks to facilitate natural
decomposition. Half of the material is converted to methane, which is burned as fuel in t
the energy recovery system, and the remaining solids are used as a soil amendment or
fertilizer in Kern, Kings, Riverside, and San Diego Counties.
OCWD's Treatment Plant No. 2 is located in the City of Huntington Beach adjacent to ,
the Santa Ana River and about 1,500 feet from the ocean. This plant provides a mix of '
advanced primary and secondary treatment. The plant receives raw wastewater through
five major sewers. The treatment process is similar to Plant No. 1. Approximately 33
percent of the influent receives secondary treatment through an activated sludge system, ,
and all of the effluent is discharged to the ocean disposal system.
OCSD's treated wastewater is discharged through a 120-inch outfall at a depth of '
approximately 200 feet below sea level and nearly five miles offshore from the mouth of
the Santa Ana River. Its high tide hydraulic capacity is 480 mgd. A 78-inch standby '
outfall stretches approximately one mile from shore that is used for emergency purposes.
Table 8.3-1 projects the treated wastewater discharged to the ocean from Treatment Plant
No. 1 and 2. ,
Table 8.3-1 '
Wastewater Discharged to the Ocean
(AFY)
i ,;Wastewater Discharged '
-YearF o
to°Pfh
_ e Ocean
2005 249,678 '
2010 197,055
2015 217,209
2020 200,414 ,
2025 200,414
2030 200,414 ,
Source: MWDOC 2005 Regional UWMP
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Current capacity for Reclamation Plant No. 1 is 218 million gallons per day (mgd) of
' wastewater, with an average day flow of 120 mgd. Current capacity for Plant No. 2 is 168
mgd of wastewater, with an average flow of 144 mgd.71
' The TWS directs its wastewater flow to OCSD's Reclamation Plant No. 1. If needed,
TWS could direct its wastewater flows to OCSD's Treatment Plant No. 2. Although TWS
' does not utilize recycled water at this time, it is assumed most of the wastewater
generated within TWS is treated to recycled water standards after being treated at Plant
No. 1. The quantities of wastewater generated are generally proportional to the
' population and the water use in the service area. Estimates of the wastewater flows in the
TWS are included in Table 8.3-2. The wastewater flows were calculated using the
' population projections included in Section 1.
Table 8.3-2
f Wastewater Generated Within the City of Tustin
(MGD / AFY)
' Year I7ntt FIoH Coefficient Wastewater Gm&ated by tlie'City
n od
. •. . ars:. , . ,MGD /AFY) .
2000 104 6.46 / 7,233
2005 106 6.58 / 7,372
2010 109 6.77/ 7,581
2015 112 6.96 / 7,790
2020 115 7.14/ 7,998
2025 115 7.14/ 7,998
2030 115 7.14/ 7,998
The OCSD interim Strategic Plan Update, September 2002. Years 2025 and 2030
were assumed to be the same as 2020.
8.4 REGIONAL RECYCLED WATER
Since the TWS currently has available groundwater for at least 64 percent of its total
' water supply, the TWS supports the efforts of the regional water management agencies to
utilize recycled water in Orange County. Recycled water is used to protect the Basin
through recharge and prevention of saltwater intrusion. Recycled water in Orange County
is also used to irrigate crops, golf courses, parks, schools, business landscapes, residential
lawns, and some industrial uses thus offsetting potable water demands. In 2003/2004,
over 10,000 AF of recycled water was applied by water retailers in the County.12 The
regional projects planned or currently used to provide recycled water are discussed in the
following sections.
"MW DOC 2005 Regional Urban Water Management Plan.
n OCWD,2003-2004 Engineer's Report,February 2005.
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Green Acres Project (GAP)
OCSD produces recycled water year round for OCWD's Green Acres Project (GAP), ,
providing recycled water for industrial customers and landscape irrigation in the cities of
Santa Ana, Fountain Valley, Costa Mesa, and Newport Beach. The GAP has the capacity '
to treat up to 7.5 mgd of recycled water.
Water Factory 21
Although currently offline due to the construction of the GWRS, Water Factory 21 had '
been used by OCWD since 1976 to produced recycled water for injection into the Basin
to protect against seawater intrusion. Water Factory 21 purified approximately 4 mgd of
recycled water and deep well water. This blended water supplied a hydraulic barrier ,
system that consisted of a series of injection wells, located approximately four miles
inland, to produce a fresh water mound within the groundwater aquifer to block further
passage of seawater. The GWRS will replace Water Factory 21 and continue to provide
recycled water for injection into the Basin.
Southern California Comprehensive Water Reclamation and Reuse Study ,
(SCCWRRS)
In 1993, the DWR, in cooperation with the U.S. Bureau of Reclamation (USSR) and
seven southern California water agencies, including Metropolitan, undertook a study to '
evaluate the feasibility of a regional water reclamation plan. The Southern California
Comprehensive Water Reclamation and Reuse Study (SCCWRRS) is a six-year effort to
identify regional reclamation systems, and promote efficient use of total water resources ,
by increasing the use of recycled water and identifying opportunities for and constraints
to maximizing water reuse in southern California. ,
Based upon draft findings of the SCCWRRS, a regional water recycling system that
spans the entire study area is not practical or feasible; however, subregional systems '
warrant further evaluation. Orange County and the Lower Santa Ana River Watershed
has been identified as one of the four geographical regions, and is being examined for a
regional water recycling system for short-term (20 10) and long-term (2040) applications. '
OCWD/OCSD Groundwater Replenishment System (GWRS) '
The most immediate potential use for recycled water in Orange County is for Basin
recharge. To supplement regional water recycling projects such as the Green Acres '
Project, the GWRS (a groundwater recharge project) jointly sponsored by OCWD and
OCSD is being implemented. ,
The GWRS is a water supply project designed to ultimately reuse approximately 110,000
AFY of advanced treated wastewater. The first phase is currently underway and is '
scheduled to go online in 2007. The first phase anticipates treating 61,000 AFY in
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2007/08, 68,000 AFY in 2008/09, and eventually 72,000 AFY." Timing of future phases
will be determined by projected flow requirements for anticipated water demands.
' The objective of the project is to develop a new source of reliable, high quality, low
salinity water that will be used to replenish the Basin and expand the existing seawater
intrusion barrier. The GWRS supplements existing water supplies, and provides a new,
' cost-effective and reliable source of water to recharge the Basin, protect the Basin from
further degradation due to seawater intrusion, and augment the supply of recycled water
for irrigation and industrial use. Thus, the GWRS is comprised of three major
components: (1) Advanced Water Purification Facilities (AWPF) and pumping stations;
(2) a major pipeline connecting the treatment facilities to existing recharge basins; and
(3) expansion of an existing seawater intrusion barrier.
The GWRS takes secondary, treated municipal wastewater from the OCSD Treatment
' Plant No. 1 in Fountain Valley and further cleans this water to levels that exceed current
drinking water standards. A portion of the treated product water would be pumped
upstream via a major conveyance pipeline generally paralleling the Santa Ana River to
the OCWD spreading basins where it would be allowed to percolate into the Basin. The
treated water will also be injected into the ground to create an expanded seawater
' intrusion barrier.
A small portion of the treated water will be made available to supplement the irrigation
' demands of OCWD's existing GAP. Some of the treated water may also be made
available for use as industrial process water, irrigation water or for other approved uses in
' industrial areas, business parks, golf courses, and parks located near the Santa Ana River
pipeline alignment.
1 8.5 Potential Uses of Recycled Water
' While the TWS recognizes the potential uses of recycled water in its community, such as
landscape irrigation, parks, industrial and other uses, the OCWD does not have the
' recycled water infrastructure to support the use of recycled water. The cost-effectiveness
analyses that have been conducted throughout the years regarding recycled water
infrastructure have not shown to be beneficial at this time. Therefore, the TWS supports,
' encourages and contributes to the continued development of recycled water and potential
uses throughout the region through the GWRS.
' 8.6 2000 Projected and Potential Uses of Recycled Water
' In 2000, the TWS did not project any recycled water use by the year 2005, or any year
thereafter. The TWS currently does not utilize or serve directly applied recycled water to
any of its customers or for municipal uses.
73 Orange County Water District,Long Term Facilities Plan,Draft October 2005.
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Tustin Water Services ,
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8.7 Encouraging Recycled Water Use '
Studies of water recycling opportunities within southern California provide a context for
promoting the development of water recycling plans. It is recognized that broad public '
acceptance of recycled water requires continued education and public involvement.
However, planning for most of the recycled water available is being directed toward
replenishment of the Basin and improvements in groundwater quality. As a user of
groundwater,the TWS supports the efforts of OCWD and OCSD to utilize recycled water
as a primary resource for groundwater recharge in Orange County. ,
Public Education ,
The TWS participates in the MWDOC public education and school education programs,
which include extensive sections on water recycling. MWDOC's water use efficiency
public information programs are a partnership with agencies throughout the county.
Through a variety of public information programs, MWDOC reaches the public, '
including those in the TWS, with accurate information regarding present and future water
supplies, the demands for a suitable quantity and quality of water, including recycled
water, and the importance of implementing water efficient techniques and behaviors.
Through MWDOC, water education programs have reached thousands of students with
grade-specific programs that include information on recycled water. Between September
2004 and June 2005, school education presentations were made in seven TWS schools
reaching over 2,800 students. Two schools are expected to participate between September
2005 and June 2006 with over 1,300 students in attendance. '
Financial Incentives
The implementation of recycled water projects involves a substantial upfront capital
investment for planning studies, environmental impact reports, engineering design and
construction before there is any recycled water to market. For some water agencies, these ,
capital costs exceed the short-term expense of purchasing additional imported water
supplies from Metropolitan. '
The establishment of new supplemental funding sources through federal, state and
regional programs now provide significant financial incentives for local agencies to ,
develop and make use of recycled water. Potential sources of funding include federal,
state and local funding opportunities. These funding sources include the USBR, '
California Proposition 13 Water Bond, and Metropolitan's Local Resources Program.
These funding opportunities may be sought by the TWS or possibly more appropriately
by regional agencies. The TWS will continue to support seeking funding for regional '
water recycling projects and programs.
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' Tustin Water Services
2005 Urban Water Management Plan Section 8
8.8 Optimizing Recycled Water Use
In Orange County, the majority of recycled water is used for irrigating golf courses;
parks, schools, business and communal landscaping. However, future recycled water use
can increase by requiring dual piping in new developments, retrofitting existing
landscaped areas and constructing recycled water pumping stations and transmission
' mains to reach areas far from the treatment plants. Gains in implementing some of these
projects have been made throughout the county; however, the additional costs, large
energy requirements and facilities make such projects very expensive to pursue.
To optimize the use of recycled water, cost/benefit analyses must be conducted for each
potential project. Once again, this brings about the discussion on technical and economic
feasibility of a recycled water project requiring a relative comparison to alternative water
supply options. For the TWS, analysis has shown capital costs exceed the short-term
expense of purchasing additional imported water supplies from Metropolitan through
EOCWD and MWDOC.
' The TWS will continue to conduct cost/benefit analyses when feasible for recycled water
projects, and seek creative solutions and a balance to recycled water use, in coordination
' with OCWD, Metropolitan and other cooperative agencies. These include solutions for
funding, regulatory requirements, institutional arrangements and public acceptance.
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APPENDIX A
1 CALIFORNIA URBAN WATER
MANAGEMENT PLANNING ACT
OF 1983 AS AMENDED TO 2005
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Established: AB 797, Klehs, 1983
Amended: AB 2661, Klehs, 1990
AB 11X, Filante, 1991
AB 1869, Speier, 1991
AB 892, Frazee, 1993
SB 1017, McCorquodale, 1994
AB 2853, Cortese, 1994
AB 1845, Cortese, 1995
SB 1011, Polanco, 1995
AB 2552, Bates, 2000
' SB 553, Kelley, 2000
SB 610, Costa, 2001
AB 901, Daucher, 2001
SB 672, Machado, 2001
SB 1348, Brulte, 2002
SB 1384, Costa, 2002
SB 1518, Torlakson, 2002
AB 105, Wiggins, 2004
SB 318, Alpert, 2004
CALIFORNIA WATER CODE DIVISION 6 PART 2.6. URBAN WATER
MANAGEMENT PLANNING
CHAPTER 1. GENERAL DECLARATION AND POLICY
10610. This part shall be known and may be cited as the "Urban Water Management
Planning Act."
10610.2. (a) The Legislature finds and declares all of the following:
(1) The waters of the state are a limited and renewable resource subject to ever-
increasing demands.
(2) The conservation and efficient use of urban water supplies are of statewide
concern; however, the planning for that use and the implementation of those plans can
best be accomplished at the local level.
(3) A long-term, reliable supply of water is essential to protect the productivity of
California's businesses and economic climate.
' (4) As part of its long-range planning activities, every urban water supplier should
make every effort to ensure the appropriate level of reliability in its water service
' sufficient to meet the needs of its various categories of customers during normal, dry,
and multiple dry water years.
(5) Public health issues have been raised over a number of contaminants that have
' been identified in certain local and imported water supplies.
(6) Implementing effective water management strategies, including groundwater
storage projects and recycled water projects, may require specific water quality and
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salinity targets for meeting groundwater basins water quality objectives and promoting
beneficial use of recycled water.
(7) Water quality regulations are becoming an increasingly important factor in water
agencies' selection of raw water sources, treatment alternatives, and modifications to
existing treatment facilities.
(8) Changes in drinking water quality standards may also impact the usefulness of
water supplies and may ultimately impact supply reliability.
(9) The quality of source supplies can have a significant impact on water management
strategies and supply reliability.
(b) This part is intended to provide assistance to water agencies in carrying out their ,
long-term resource planning responsibilities to ensure adequate water supplies to meet
existing and future demands for water.
10610.4. The Legislature finds and declares that it is the policy of the state as follows:
(a) The management of urban water demands and efficient use of water shall be t
actively pursued to protect both the people of the state and their water resources.
(b) The management of urban water demands and efficient use of urban water
supplies shall be a guiding criterion in public decisions.
(c) Urban water suppliers shall be required to develop water management plans to
actively pursue the efficient use of available supplies.
CHAPTER 2. DEFINITIONS
10611. Unless the context otherwise requires, the definitions of this chapter govern the
construction of this part.
10611.5. "Demand management" means those water conservation measures, programs, ,
and incentives that prevent the waste of water and promote the reasonable and efficient
use and reuse of available supplies.
10612. "Customer" means a purchaser of water from a water supplier who uses the water
for municipal purposes, including residential, commercial, govermtental, and industrial '
uses.
10613. "Efficient use" means those management measures that result in the most
effective use of water so as to prevent its waste or unreasonable use or unreasonable
method of use.
10614. "Person" means any individual, firm, association, organization, partnership, ,
business, trust, corporation, company, public agency, or any agency of such an entity.
10615. "Plan" means an urban water management plan prepared pursuant to this part. A
plan shall describe and evaluate sources of supply, reasonable and practical efficient uses,
reclamation and demand management activities. The components of the plan may vary
according to an individual community or area's characteristics and its capabilities to
efficiently use and conserve water. The plan shall address measures for residential,
commercial, governmental, and industrial water demand management as set forth in '
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Article 2 (commencing with Section 10630) of Chapter 3. In addition, a strategy and time
schedule for implementation shall be included in the plan.
10616. "Public agency" means any board, commission, county, city and county, city,
regional agency, district, or other public entity.
10616.5. "Recycled water" means the reclamation and reuse of wastewater for beneficial
use.
10617. "Urban water supplier" means a supplier, either publicly or privately owned,
providing water for municipal purposes either directly or indirectly to more than 3,000
customers or supplying more than 3,000 acre-feet of water annually. An urban water
supplier includes a supplier or contractor for water, regardless of the basis of right, which
distributes or sells for ultimate resale to customers. This part applies only to water
supplied from public water systems subject to Chapter 4 (commencing with Section
116275) of Part 12 of Division 104 of the Health and Safety Code.
C13APTER 3. URBAN WATER MANAGEMENT PLANS
Article 1. General Provisions
10620.
(a) Every urban water supplier shall prepare and adopt an urban water management
plan in the manner set forth in Article 3 (commencing with Section 10640).
(b) Every person that becomes an urban water supplier shall adopt an urban
water management plan within one year after it has become an urban water
supplier.
(c) An urban water supplier indirectly providing water shall not include
planning elements in its water management plan as provided in Article 2
(commencing with Section 10630) that would be applicable to urban water
suppliers or public agencies directly providing water, or to their customers,
without the consent of those suppliers or public agencies.
(d)
(1) An urban water supplier may satisfy the requirements of this part by
participation in areawide, regional, watershed, or basinwide urban
water management planning where those plans will reduce preparation
costs and contribute to the achievement of conservation and efficient
water use.
' (2) Each urban water supplier shall coordinate the preparation of its plan
with other appropriate agencies in the area, including other water
suppliers that share a common source, water management agencies,
and relevant public agencies, to the extent practicable.
(e) The urban water supplier may prepare the plan with its own staff, by
contract, or in cooperation with other governmental agencies.
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(t) An urban water supplier shall describe in the plan water management
tools and options used by that entity that will maximize resources and
minimize the need to import water from other regions.
10621. ,
(a) Each urban water supplier shall update its plan at least once every five
years on or before December 31, in years ending in five and zero. '
(b) Every urban water supplier required to prepare a plan pursuant to this
part shall notify any city or county within which the supplier provides
water supplies that the urban water supplier will be reviewing the plan and
considering amendments or changes to the plan. The urban water supplier
may consult with, and obtain comments from, any city or county that
receives notice pursuant to this subdivision.
(c) The amendments to, or changes in, the plan shall be adopted and filed
in the manner set forth in Article 3 (commencing with Section 10640).
Article 2. Contents of Plans
10630. It is the intention of the Legislature, in enacting this part, to permit levels of water
management planning commensurate with the numbers of customers served and the
volume of water supplied.
10631. A plan shall be adopted in accordance with this chapter and shall do all of the
following:
(a) Describe the service area of the supplier, including current and projected
population, climate, and other demographic factors affecting the supplier's water
management planning. The projected population estimates shall be based upon ,
data from the state, regional, or local service agency population projections within
the service area of the urban water supplier and shall be in five-year increments to
20 years or as far as data is available.
(b) Identify and quantify, to the extent practicable, the existing and planned
sources of water available to the supplier over the same five-year increments
described in subdivision (a). If groundwater is identified as an existing or planned
source of water available to the supplier, all of the following information shall be
included in the plan:
(1) A copy of any groundwater management plan adopted by the
urban water supplier, including plans adopted pursuant to Part 2.75
(commencing with Section 10750), or any other specific ,
authorization for groundwater management.
(2) A description of any groundwater basin or basins from which ,
the urban water supplier pumps groundwater. For those basins for
which a court or the board has adjudicated the rights to pump
groundwater, a copy of the order or decree adopted by the court or
the board and a description of the amount of groundwater the
urban water supplier has the legal right to pump under the order or
decree.
For basins that have not been adjudicated, information as to whether the
department has identified the basin or basins as overdrafted or has projected that ,
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the basin will become overdrafted if present management conditions continue, in
the most current official departmental bulletin that characterizes the condition of
the groundwater basin, and a detailed description of the efforts being undertaken
by the urban water supplier to eliminate the long-term overdraft condition.
(3) A detailed description and analysis of the location, amount, and
sufficiency of groundwater pumped by the urban water supplier for
the past five years. The description and analysis shall be based on
information that is reasonably available, including, but not limited
to. historic use records.
(4) A detailed description and analysis of the amount and location
of groundwater that is projected to be pumped by the urban water
supplier. The description and analysis shall be based on
information that is reasonably available, including, but not limited
to,historic use records.
(c) Describe the reliability of the water supply and vulnerability.to seasonal
or climatic shortage, to the extent practicable, and provide data for each of
the following:
' (1) An average water year.
(2) A single dry water year.
(3) Multiple dry water years.
For any water source that may not be available at a consistent level of use,
given specific legal, environmental, water quality, or climatic factors,
describe plans to supplement or replace that source with alternative sources
or water demand management measures,to the extent practicable.
' (d) Describe the opportunities for exchanges or transfers of water on a
short-term or long-term basis.
(e) (1) Quantify, to the extent records are available, past and current
water use, over the same five-year increments described in
subdivision (a), and projected water use, identifying the uses
among water use sectors including, but not necessarily limited to,
all of the following uses:
(A) Single-family residential.
(B) Multifamily.
(C) Commercial.
(D) Industrial.
(E) Institutional and governmental.
(F) Landscape.
(G) Sales to other agencies.
(H) Saline water intrusion barriers, groundwater recharge, or
conjunctive use, or any combination thereof.
(I) Agricultural.
(2) The water use projections shall be in the same five-year increments
described in subdivision (a).
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(f) Provide a description of the supplier's water demand management measures.
This description shall include all of the following:
(1) A description of each water demand management measure that is
currently being implemented, or scheduled for implementation, ,
including the steps necessary to implement any proposed measures,
including, but not limited to, all of the following:
(A) Water survey programs for single-family residential and multifamily
residential customers.
(B) Residential plumbing retrofit.
(C) System water audits, leak detection, and repair.
(D) Metering with commodity rates for all new connections and retrofit of
existing connections.
(E) Large landscape conservation programs and incentives.
(F) High-efficiency washing machine rebate programs.
(G) Public information programs. ,
(1-I) School education programs.
(I) Conservation programs for commercial, industrial, and institutional
accounts.
(.) Wholesale agency programs.
(K) Conservation pricing.
(L) Water conservation coordinator.
(M) Water waste prohibition.
(N) Residential ultra-low-flush toilet replacement programs.
(2) A schedule of implementation for all water demand management
measures proposed or described in the plan.
(3) A description of the methods, if any, that the supplier will use to
evaluate the effectiveness of water demand management measures
implemented or described under the plan.
(4) An estimate, if available, of existing conservation savings on water use '
within the supplier's service area, and the effect of the savings on the
supplier's ability to further reduce demand.
(g) An evaluation of each water demand management measure listed in
paragraph (1) of subdivision (f) that is not currently being implemented or
scheduled for implementation. In the course of the evaluation, first ,
consideration shall be given to water demand management measures, or
combination of measures, that offer lower incremental costs than expanded
or additional water supplies. This evaluation shall do all of the following:
(1) Take into account economic and noneconomic factors, including
environmental, social, health, customer impact, and technological factors. ,
(2) Include a cost-benefit analysis, identifying total benefits and total costs.
(3) Include a description of funding available to implement any planned water
supply project that would provide water at a higher unit cost. ,
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(4) Include a description of the water supplier's legal authority to implement the
measure and efforts to work with other relevant agencies to ensure the
implementation of the measure and to share the cost of implementation.
(h) Include a description of all water supply projects and water supply programs
that may be undertaken by the urban water supplier to meet the total projected
water use as established pursuant to subdivision (a) of Section 10635. The urban
-water supplier shall include a detailed description of expected future projects and
programs, other than the demand management programs identified pursuant to
paragraph (1) of subdivision (f), that the urban water supplier may implement to
increase the amount of the water supply available to the urban water supplier in
average, single-dry, and multiple-dry water years. The description shall'identify
specific projects and include a description of the increase in water supply that is
expected to be available from each project. The description shall include an
estimate with regard to the implementation timeline for each project or program.
(i) Describe the opportunities for development of desalinated water, including, but
' not limited to, ocean water, brackish water, and groundwater, as a long-term
supply.
Q) Urban water suppliers that are members of the California Urban Water
Conservation Council and submit annual reports to that council in accordance
with the "Memorandum of Understanding Regarding Urban Water Conservation
in California," dated September 1991, may submit the annual reports identifying
' water demand management measures currently being implemented, or scheduled
for implementation, to satisfy the requirements of subdivisions (f) and (g).
(k) Urban water suppliers that rely upon a wholesale agency for a source of water,
shall provide the wholesale agency with water use projections from that agency
for that source of water in five-year increments to 20 years or as far as data is
available. The wholesale agency shall provide information to the urban water
supplier for inclusion in the urban water supplier's plan that identifies and
quantifies, to the extent practicable, the existing and planned sources of water as
required by subdivision (b), available from the wholesale agency to the urban
water supplier over the same five-year increments, and during various water-year
types in accordance with subdivision (c). An urban water supplier may rely upon
water supply information provided by the wholesale agency in fulfilling the plan
informational requirements of subdivisions (b) and (c), including, but not limited
to, ocean water, brackish water, and groundwater, as a long-tern supply.
10631.5. The department shall take into consideration whether the urban water supplier is
implementing or scheduled for implementation,the water demand management activities
that the urban water supplier identified in its urban water management plan, pursuant to
' Section 10631, in evaluating applications for grants and loans made available pursuant to
Section 79163. The urban water supplier may submit to the department copies of its
annual reports and other relevant documents to assist the department in determining
whether the urban water supplier is implementing or scheduling the implementation of
water demand management activities.
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10632. The plan shall provide an urban water shortage contingency analysis which
includes each of the following elements which are within the authority of the urban water
supplier:
(a) Stages of action to be undertaken by the urban water supplier in response to
water supply shortages, including up to a 50 percent reduction in water supply,
and an outline of specific water supply conditions which are applicable to each
stage.
(b) An estimate of the minimum water supply available during each of the next
three water years based on the driest three-year historic sequence for the agency's
water supply.
(c) Actions to be undertaken by the urban water supplier to prepare for, and
implement during, a catastrophic interruption of water supplies including, but not
limited to, a regional power outage, an earthquake, or other disaster.
(d) Additional, mandatory prohibitions against specific water use practices during
water shortages, including,but not limited to, prohibiting the use of potable water
for street cleaning.
(e) Consumption reduction methods in the most restrictive stages. Each urban
water supplier may use any type of consumption reduction methods in its water ,
shortage contingency analysis that would reduce water use, are appropriate for its
area, and have the ability to achieve a water use reduction consistent with up to a
50 percent reduction in water supply.
(f) Penalties or charges for excessive use, where applicable.
(g) An analysis of the impacts of each of the actions and conditions described in
subdivisions (a) to (f), inclusive, on the revenues and expenditures of the urban
water supplier, and proposed measures to overcome those impacts, such as the ,
development of reserves and rate adjustments.
(h) A draft water shortage contingency resolution or ordinance.
(i) A mechanism for determining actual reductions in water use pursuant to the
urban water shortage contingency analysis.
10633. The plan shall provide, to the extent available, information on recycled water and
its potential for use as a water source in the service area of the urban water supplier. The
preparation of the plan shall be coordinated with local water, wastewater, groundwater,
and planning agencies that operate within the supplier's service area, and shall include all
of the following:
(a) A description of the wastewater collection and treatment systems in the '
supplier's service area, including a quantification of the amount of wastewater
collected and treated and the methods of wastewater disposal.
(b) A description of the quantity of treated wastewater that meets recycled water
standards, is being discharged, and is otherwise available for use in a recycled
water project. ,
(e) A description of the recycled water currently being used in the supplier's
service area, including, but not limited to, the type, place, and quantity of use.
(d) A description and quantification of the potential uses of recycled water,
including, but not limited to, agricultural irrigation, landscape irrigation, wildlife
habitat enhancement, wetlands, industrial reuse, groundwater recharge, and other '
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appropriate uses, and a determination with regard to the technical and economic
feasibility of serving those uses.
(e) The projected use of recycled water within the supplier's service area at the
end of 5, 10, 15, and 20 years, and a description of the actual use of recycled
water in comparison to uses previously projected pursuant to this subdivision.
(f) A description of actions, including financial incentives, which may be taken to
encourage the use of recycled water, and the projected results of these actions in
terns of acre-feet of recycled water used per year.
(g) A plan for optimizing the use of recycled water in the supplier's service area,
including actions to facilitate the installation of dual distribution systems, to
promote recirculating uses, to facilitate the increased use of treated wastewater
that meets recycled water standards, and to overcome any obstacles to achieving
that increased use.
10634. The plan shall include information, to the extent practicable, relating to the quality
of existing sources of water available to the supplier over the same five-year increments
as described in subdivision (a) of Section 10631, and the manner in which water quality
affects water management strategies and supply reliability.
Article 2.5 Water Service Reliability
10635.
(a) Every urban water supplier shall include, as part of its urban water
management plan, an assessment of the reliability of its water service to its
customers during normal, dry, and multiple dry water years. This water
supply and demand assessment shall compare the total water supply sources
available to the watersupplierwith the total projected water use over the
next 20 years, in five-year increments, for a normal water year, a single dry
water year, and multiple dry water years. The water service reliability
assessment shall be based upon the information compiled pursuant to
Section 10631, including available data from state, regional, or local agency
population projections within the service area of the urban water supplier.
(b) The urban water supplier shall provide that portion of its urban water
management plan prepared pursuant to this article to any city or county
within which it provides water supplies no later than 60 days after the
submission of its urban water management plan.
(c)Nothing in this article is intended to create a right or entitlement to water
service or any specific level of water service.
(d) Nothing in this article is intended to change existing law concerning an
urban water supplier's obligation to provide water service to its existing
customers or to any potential future customers.
Article 3. Adoption and Implementation of Plans
' 10640. Every urban water supplier required to prepare a plan pursuant to this part shall
prepare its plan pursuant to Article 2 (commencing with Section 10630).
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The supplier shall likewise periodically review the plan as required by Section 10621,
and any amendments or changes required as a result of that review shall be adopted
pursuant to this article.
10641. An urban water supplier required to prepare a plan may consult with, and obtain
comments from, any public agency or state agency or any person who has special
expertise with respect to water demand management methods and techniques.
10642. Each urban water supplier shall encourage the active involvement of diverse
social, cultural, and economic elements of the population within the service area prior to
and during the preparation of the plan. Prior to adopting a plan, the urban water supplier
shall make the plan available for public inspection and shall hold a public hearing
thereon. Prior to the hearing, notice of the time and place of hearing shall be published
within the jurisdiction of the publicly owned water supplier pursuant to Section 6066 of '
the Government Code. The urban water supplier shall provide notice of the time and
place of hearing to any city or county within which the supplier provides water supplies.
A privately owned water supplier shall provide an equivalent notice within its service
area. After the hearing, the plan shall be adopted as prepared or as modified after the
hearing.
10643. An urban water supplier shall implement its plan adopted pursuant to this chapter
in accordance with the schedule set forth in its plan.
10644. ,
(a) An urban water supplier shall file with the department and any city or
county within which the supplier provides water supplies a copy of its plan
no later than 30 days after adoption. Copies of amendments or changes to ,
the plans shall be filed with the department and any city or county within
which the supplier provides water supplies within 30 days after adoption. '
(b) The department shall prepare and submit to the Legislature, on or before
December 31, in the years ending in six and one, a report summarizing the
status of the plans adopted pursuant to this part. The report prepared by the ,
department shall identify the outstanding elements of the individual plans.
The department shall provide a copy of the report to each urban water
supplier that has filed its plan with the department. The department shall
also prepare reports and provide data for any legislative hearings designed to
consider the effectiveness of plans submitted pursuant to this part. '
10645. Not later than 30 days after filing a copy of its plan with the department, the urban
water supplier and the department shall make the plan available for public review during '
normal business hours.
CHAPTER 4. MISCELLANEOUS PROVISIONS '
10650. Any actions or proceedings to attack, review, set aside, void, or annul the acts or
decisions of an urban water supplier on the grounds of noncompliance with this part shall
be commenced as follows:
(a) An action or proceeding alleging failure to adopt a plan shall be
commenced within 1S months after that adoption is required by this part. '
(b) Any action or proceeding alleging that a plan, or action taken pursuant to
the plan, does not comply with this part shall be commenced within 90 days
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after filing of the plan or amendment thereto pursuant to Section 10644 or
the taking of that action.
10651. In any action or proceeding to attack, review, set aside, void, or annul a plan, or
an action taken pursuant to the plan by an urban water supplier on the grounds of
noncompliance with this part, the inquiry shall extend only to whether there was a
prejudicial abuse of discretion. Abuse of discretion is established if the supplier has not
proceeded in a manner required by law or if the action by the water supplier is not
' supported by substantial evidence.
10652. The California Environmental Quality Act (Division 13 (commencing with
Section 21000) of the Public Resources Code) does not apply to the preparation and
adoption of plans pursuant to this part or to the implementation of actions taken pursuant
to Section 10632. Nothing in this part shall be interpreted as exempting from the
California Environmental Quality Act any project that would significantly affect water
supplies for fish and wildlife, or any project for implementation of the plan, other than
projects implementing Section 10632, or any project for expanded or additional water
supplies.
10653. The adoption of a plan shall satisfy any requirements of state law, regulation, or
order, including those of the State Water Resources Control Board and the Public
Utilities Commission, for the preparation of water management plans or conservation
plans; provided, that if the State Water Resources Control Board or the Public Utilities
Commission requires additional information concerning water conservation to implement
its existing authority, nothing in this part shall be deemed to limit the board or the
commission in obtaining that information. The requirements of this part shall be satisfied
by any urban water demand management plan prepared to meet federal laws or
1 regulations after the effective date of this part, and which substantially meets the
requirements of this part, or by any existing urban water management plan which
' includes the contents of a plan required under this part.
10654. An urban water supplier may recover in its rates the costs incurred in preparing its
I plan and implementing the reasonable water conservation measures included in the plan.
Any best water management practice that is included in the plan that is identified in the
"Memorandum of Understanding Regarding Urban Water Conservation in California" is
deemed to be reasonable for the purposes of this section.
' 10655. If any provision of this part or the application thereof to ally person or
circumstances is held invalid, that invalidity shall not affect other provisions or
applications of this part which can be given effect without the invalid provision or
application thereof, and to this end the provisions of this part are severable.
10656. An urban water supplier that does not prepare, adopt, and submit its urban water
management plan to the department in accordance with this part, is ineligible to receive
funding pursuant to Division 24 (commencing with Section 78500) or Division 26
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(commencing with Section 79000), or receive drought assistance from the state until the
urban water management plan is submitted pursuant to this article.
10657. '
(a) The department shall take into consideration whether the urban water
supplier has submitted an updated urban water management plan that is
consistent with Section 10631, as amended by the act that adds this section,
in determining whether the urban water supplier is eligible for funds made
available pursuant to any program administered by the department.
(b) This section shall remain in effect only until January 1, 2006, and as of
that date is repealed, unless a later enacted statute, that is enacted before
January 1, 2006, deletes or extends that date.
1
1
Final Draft 317106 A-12 '
1
1
APPENDIX B
f 2005 URBAN WATER MANAGEMENT PLAN
"REVIEW FOR COMPLETENESS" FORM
1
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1
1 APPENDIX C
1 2005 URBAN WATER MANAGEMENT PLAN
"REVIEW FOR DMM COMPLETENESS" FORM
1
1
1
I
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' APPENDIX D
1 NOTICE OF PUBLIC HEARING AND
RESOLUTION FOR PLAN ADOPTION
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City of Tustin
' 2005 Urban Water Management Plan
REFERENCES
Assembly Bill 797, California Water Code Division 6 Part 2.6 Urban Water
Management Planning, 1983, as amended to 2005
California Urban Water Conservation Council,Memorandum of Understanding
Regarding Urban Water Conservalion in California (MOU), September
' 1991
City of Tustin, 2000 Water Master Plan, 2000
City of Tustin, 1995 Urban Water Management Plan, 1995
City of Tustin, Water Quality Report for Consumers, 2000
City of Tustin, 2005 Water Quality Report, 2005
Department of Water Resources, State Water Project Delivery Reliability Report,
2002
' Metropolitan Water District of Southern California, Report on Metropolitan Water
Supplies, A Blueprint,for Water Reliability, March 25,2003
Metropolitan Water District of Southern California,Annual Progress Report to the
California State Legislature, February 2003
Metropolitan Water District of Southern California, 2005 Regional Urban Water
Management Plan, September 2005
Metropolitan Water District of Southern California [On-line]
htty://www.mwd.dst.ca.us/mwdh2o/pa es/yourwater/ccr02/ccrO5.htnil,
August 27, 2003
Metropolitan Water District of Southern California, Integrated Water Resources Plan
2003 Update, May 2004
Metropolitan Water District of Southern California,Adaptability:Achievements in
Conservation Recycling and Groundwater Recharge. Annual Progress Report
to the California Stale Legislature, February 2003
' Municipal Water District of Orange County, 2000 Regional Urban Water
Management Plan, December 2000
' Municipal Water District of Orange County, 2005 Regional Urban Water
Management Plan, 2005
' Municipal Water District of Orange County, Orange County Water Agencies: Water
Rates, Water Systems Operations, and Financial Information, 2001
E-1 Final Draft 317106
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Municipal Water District of Orange County, Orange County Water Agencies: Water
Rates, Water Systems Operalions, and Financial Information, 2001 t
Municipal Water District of Orange County [On-Line] http://www.mwdoe.com. 2002
Orange County Sanitation District, September 2003 17onlldy Progress Report on the
Groundwater•Replenishment Syslenr, September 2003
Orange County Sanitation District, Annual Report Operalions and Maintenance,.
October 2002
Orange County Sanitation District Facts and Key Statistics [On-line]
www.ocsd.corn, January 2004
Orange Comity Water District, 2001-2002 Annual Report, 2001-2002
Orange County Water District, 2020 Water-Master Plan, 2000
Orange County Water District, Orange County Water District Act
Orange County Water District, Orange County Facts and Figures,
http://www.fullerton.edu/cdr/count, facts.pdf, 2005 ,
Orange County Water District, Draft 2003-2004 Engineer's Report on Groundwater
condition, Water Supply and Basin Utilization in the Orange County Water
Districl, February 2005
Orange County Water District, Groundwater Management Plan, March 2004
Santa Ana Regional Water Quality Control Board, Region 8 Water Quality Control
Plan (Santa Ana River Basin), January 1995
Santa Ana Regional Water Quality Control Board, Watershed Management Initiative,
Revised May 2004
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APPENDIX F
' RESOLUTION 92-15 TUSTIN WATER SHORTAGE
CONTINGENCY PLAN ADOPTION AND ORDINANCE No.
1060 - ADOPTION OF WATER MANAGEMENT PLAN
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RESOLUTION NO., 92-15
' A RESOLUTION OF THE CITY COUNCIL OF ]HE CITY OF
TUSTIN, CALIFORNIA, ADOPTING THE TUSTIN WATER
SHORTAGE CONTINGENCY PLAN
' The City Council of the City of Tustin does hereby resolve as follows:
WHEREAS, the CITY COUNCIL of the CITY OF TUSTIN, CALIFORNIA ("City") ,
' has heretofore undertaken proceedings Lo review the Tustin Water Shortage
Contingency Plan ("Plan") pursuant to Assembly Bill No.. 11 ("AB-11") of the
State of California approved by the Governor on October 13, 1991; and,
' WHEREAS, said Plan is an amendment to the Urban Water Management Plan
(AB-797) , adopted by City Council on March 4, 1991 by Resolution No.. 91-;27;
and,
WHEREAS, said Plan was prepared in accordance with AB 11; and,
' WHEREAS, said proceedings provide for the adoption of the said Plan
consisting of water shortage/conservation elements; and,
WHEREAS, a public hearing was duly called, noticed and held on said
Plan on February 3. 1992 pursuant to AB-11.
NOW. THEREFORE, it is hereby resolved as follows:
Section 1. That the above recitals are all true and correct
Section 2., That it is hereby ordered that said Plan be filed with the
State of California Department of Water Resources..
' Section._3 The City Manager is hereby authorized to declare a Water
Shortage mergEency, should such an emergency exist, and implement this Plan..
Section 4.. The City Manager shall make recommendations to the City
Council regarding additional procedures, rules, and regulations to carry out
effective and equitable allocation of water resources during a water
shortage.
PASSED AND ADOPTED by the City Council of the city of Tustin at a
regular meeting held on the 3rd day of February, 1992.
' Cs -t Puckett, Mayor -
Mary Fn'n, (ityYC k
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City of Tustin ,
RESOLUTION CERTIFICATION
STATE OF CALIFORNIA }
COUNTY OF ORANGE ) ss '
CITY OF TUSTIN )
RESOLUTION NO.. 92-15
Mary E. Wynn, City Clerk and ex-officio Clerk of the City Council of the ,
City of Tustin, California, does hereby certify that the whole number of
the members of the City Council is five; that the above and foregoing
resolution was passed and adopted at a regularmeeting of the City Council '
held on the 3xd day of February, 1992, by the following vote:
COUNCILMEMBER AYES: Puckett, Pontious, Edgar, Potts, Prescott '
COUNCILMEMBER NOES: None
COUNCILMEMBER ABSTAINED: None
COUNCILMEMBER ABSENT: None
} --
Marry E.. nn, C y Clerk ,
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WATER 146TG bW *btN"bY : �
(AN AMENDMENT TO THE URBAN WATER MANAGEMENT PLAN)
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' TUSTIN WATER'SERVICE
TUSTIN, CALIFORNIA
JANUARY 1992
F-3 Final Draft 317106
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THE WATER SHORTAGE CONTINGENCY PLAN '
FOR '
THE CITY OF TUSTIN
JANUARY 1992 ,
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CHARLES E. PUCKETT - MAYOR '
LESLIE ANNE PONTIOUS - MAYOR PRO TEM
RICHARD B. EDGAR - COUNCILMEMBER '
JIM POTT'S - COUNCILMEMEBER ,
EARL J. PRESCOTT - COUNCILMEMBER
1
PREPARED FOR
STATE OF CALIFORNIA '
DEPARTMENT OF WATER RESOURCES
Final Draft 317106 F-4 '
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CITY OF TUSTIN
1 WATER SHORTAGE CONTINGENCY PLAN
1 TABLE OF CONTENTS
PAGE
1
TEXT
1 INTRODUCTION 1
THE PLAN 3
AB-11 Section 10620(d)(2) 3
1 AB-11 Section 10631(e)(1) 3
AB-11 Section 10631(e)(2) 4
1 AB-11 Section .10631(e)(3) 6
AB-11 Section 10631(e)(4) 7
AB-11 Section 10631(e)(5) 7
1 AB-11 Section 10631(e)(6) 8
AB-11 Section 10631(e)(7) 8
AB-11 Section 10631(e)(8) 8
1 AB-11 Section 10631(e)(9) 9
AB-11 Section 10631 (f) 9
AB-11 Section 10631 (g) 9
TABLES & FIGURES
1 CURRENT PRODUCTION 5
FUTURE PRODUCTION 5
AVERAGE DAY DEMAND 5
1 MAXIMUM DAY DEMAND 5
APPENDIX
1 GENERAL INFORMATION
NOTICE OF PUBLIC HEARING FOR THE PLAN
1 RESOLUTION NO. 92-15 (DRAFT)
ORDINANCE NO. 1060
ORDINANCE NO. 1063
1 RESOLUTION NO. 91-27
SAMPLE TWS WATER PRODUCTION REPORTS/STATISTICS
ASSEMBLY BILL NO., 11
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CITY OF TUSTIN ,
WATER SHORTAGE CONTINGENCY PLAN '
INTRODUCTION
This report is a required amendment to the Urban Water Management Plan '
(UWMP) which was prepared by the City of Tustin Water Service (TWS), and was
adopted by the City Council of the City of Tustin on March 4, 1991 by Resolution ,
No, 91-27 (a copy is included in the Appendix). It was submitted to the State of '
California Department of Water Resources (DWR) on March 6, 1991 in response
to AB-797.. '
This document has been prepared in accordance with California State '
Legislature Assembly Bill 11 (AB-11) which amends Sections 10620, 10621,
10631, and 10652 of the Water Code, and adds Section 10656 (a copy of AB-11 ,
is included in the Appendix). California Water Code Sections 10610 through '
10656, known as the Urban Water Management Planning Act (Act), became
effective on January 1, 1984. The Act (known as AB-797) requires every urban '
water supplier providing water for municipal purposes to more than 3,000 ,
customers or supplying more that 3,000 acre-feet of water annually to prepare and ,
adopt an UWMP in accordance with prescribed requirements.
AB-11 amends AB-797 (or UWMP) to require every urban water supplier', '
whether serving water directly or indirectly to customers, to prepare, adopt, and '
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Final Draft 317106 F-6 '
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' submit to DWR a Water Shortage Contingency Plan (Plan), The nine specific
' elements required by AB-11 are:
' 1 . Past, current, and projected water use, and to the extent possible, a
breakdown of water use (residential, commercial, single-family, etc.)
' 2. An estimate of minimum supplies available at the end of 12, 24, and
' 36 months; assuming a worst case scenario(assume the years 1992,
1993, and 1994)
3.. Stages of action that a supplier would undertake to deal with up to
' a 50 percent shortage
4. Mandatory provisions to reduce water use
' 5. Consumption limits in the most restrictive stages
6. Penalties for excessive use
7.. An analysis of the effects that these measures would have on
' revenues and the measures that an agency would take to overcome
revenue shortages
8. A draft ordinance or resolution to carry out the drought plan
9. A mechanism for determining actual reductions in water use
This Plan will cover only those items required in AB-11 and will not review
' in depth any information which can be found in the City's UWMP. Reference is
also made to urban water shortage contingency plans prepared by the Municipal
' Water District of Orange County (MWDOC) and the Metropolitan Water District of
Southern California (MWD), Copies of all City ordinances referred to herein can
be found in the Appendix.
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THE PLAN
This document begins with Section 10620(d)(2) and then follows with
Section 1062'1 (e), which essentially is the Plan. '
Sections 10631(a-d) of the Act were addressed in the City's UWMP and ,
therefore been omitted from this Plan.
Section 10620(d)(2) of the Act requires: "Each urban water supplier shall
coordinate the,preparation of its urban water shortage contingency plan with other '
urban water suppliers and public agencies in the area, to the extent practicable."
TWS has coordinated its Plan through information obtained from both the '
MWD and the MWDOC Water Shortage Contingency Plans, and from information 1
contained in the Orange County Water District IOCWD) Groundwater Management
Plan. ,
Section 10631(e) of the Water Code is amended to read: ,
(e) Provide an urban water shortage contingency plan which includes all
of the following elements which are within the authority of the urban
water supplier: '
(1) Past, current, and projected water use and, to the extent records are '
available, a breakdown of those uses on the basis of residential single
family, residential multifamily, industrial, commercial, governmental,
and agricultural use. '
This section has been covered in Chapter 2 of the City's UWMP and in
Chapter II of the MWD and in the MWDOC plans..
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Section 10631(e)(2) of the Act requires: "An estimate of the minimum
' water supply available at the end of 12, 24, and 36 months, assuming the worst
case water supply shortages."
TWS receives approximately 30 percent of its water supply from MWD
through East Orange County Water District (EOCWD) import connections.
' Assuming a worst case supply shortage scenario,this amount of water would not
be available.
TWS has interconnections with other local water agencies (see Chapter 7
' of the UWMP). These interconnections are intended for use in short-term local
' emergencies, such as pipeline breaks or well failures. It is not likely that a
significant amount of water could be obtained from them in times of severe
' drought.
' In order to maintain an adequate water supply for the health and welfare of
its customers, TWS would request the City Council to invoke the City's Water
' Management Program, Ordinance No. 1Q60, adopted by the City Council of the
' City of Tustin on March 18, 1991 . Depending on seasonal demand considerations,
one of the four stages of the ordinance would be implemented. It has been
estimated that Stages 1 through 4 could reduce the TWS water demand between
' 10 and 50 percent.
TINS is currently working towards independence from import water. With
the addition of a proposed groundwater desalter which will recoverthe supply from
3 inactive wells, and two proposed new wells, TWS will be able to supply nearly
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180% of its donoaodo from the |oou| groundwater ouyy|yThis approach is
supported by the OCVVD, which manages the local gouundvxoto, basin The
following charts illustrate current and future TWS water production along with
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average and maximum day water demand projections.
DAILY FACILITY DAILY FACILITY
PRODUCTION DESCRIPTION PRODUCTION DESCRIPTION
7.7 MG Existing Wells 23 MG 1 7th Street Plant
2.2 MG Main St. ant 5.0 MG 2 High Production Wells
10.0 MG TOTAL 7.7 MG L TOTAL
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K4G = million gallons
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The following average day demand projections were obtained from the w�
Water System Storage Evaluation Study prep arcdfor TVVSbyDaniel Boyle
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Engineering, Inc. on October 19, 1880. The noaxinouno day demand prc8eo1iuoo
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were derived using duty factors obtained from the Tustin Water Service
K8ana0onnont Program Phase U, prepared for TVVS by Boyle Engineering
CurporntionioMo/ch' 1884. Tha/ehosootboonsignificant growth inthouorvioe
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�area since preparation of the program, and the values are considered accurate.
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YEAR DEMAND YEAR DEMAND
1990 12.7 MGO— 1990 21.6 MGD
2000 13.3 MGD 2000 22.6 MGD
2010 14 0 MGD 2010 23.8 MGD
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Total future groundwater production will reach approximately 17.7 MGD
' within 2 to 3 years. Although it appears that current and future maximum day
' demands will not be supplied, reservoir storage facilities are planned which will
provide the necessary additional supply in times of peak demand.
' TWS will not place any new facilities into service within 12 months (by
' January, 1993), therefore Ordinance No. 1060 would be invoked in times of
extreme shortage.
Within 24 months (January, 1994) it is anticipated that supply from at least
' 1 new well will be available, and Ordinance No. 1063, or the less restrictive stages
of Ordinance No. 1060 will result in adequate reductions in use.
It is anticipated that within 36 months (January, 1995), with planned
improvements in place, it is unlikely that shortages will exist within the TWS
sys*.em.
Section 10631(e)(3) of the Act requires: "Stages of action to be undertaken
' by the urban water supplier in response to water supply shortages, including up
to a 50 percent reduction in water supply, and an outline of specific water supply
conditions which are applicable to each stage."
The City's Ordinance No. 1060 delineates the stages of action that will be
taken if up to a 50 percent reduction in water supply occurs. Ordinance No. 1063,
which established a Mandatory Water Conservation and Rationing Program to
reduce consumption by 15 percent, was adopted by City Council on April 1, 1991
and remains in effect.
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The MWD Plan in Chapter IV, and MWDOC, have also outlined stages of
action in their water shortage contingency plans.
Section 10631(e)(4) of the Act requires: "Mandatory provisions to reduce ,
water use which include prohibitions against specific wasteful practices, such as
gutter flooding."
Mandatory provisions to reduce water use have been outlined in detail in the ,
City's Ordinance No. 1060, and in the MWD and the MWDOC Water Shortage
Contingency Plans. '
Section 10631(e)(5) of the Act requires: "Consumption limits in the most '
restrictive stages. Each urban water supplier may use any type of consumption
limit in its water shortage contingency plan that would reduce water use and is
appropriate for its area. Examples of consumption limits that may be used include, ,
but are not limited to, percentage reductions in water allotments, per capita
allocations, an increasing block rate schedule for high usage of water with '
incentives for conservation, or restrictions on specific uses."
Stage VI of the MWDOC Incremental Interruption and Conservation Plan
(IICP) requires a 50 percent reduction in imported water usage by TWS.
TWS projects that even with the loss of half of its import supply, it can '
meet the demands of its customers provided Ordinances Nos. 1060 and '1063
remain in place. Ordinance No. 1063 calls for a mandatory 15 percent reduction
of water supplied to its customers. A chart noting consumption limits is also '
included. Should additional reduction in the water supply become necessary, the
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TWS would fequest that the City Council invoke the most appropriate stage of
Ordinance No. 1060.
Section 10631(e)(6) of the Act requires: "Penalties or charges for excessive
use."
Additional charges and penalties are outlined in the Citys' Ordinance Nos.
' 1060 and 1063, and in the MWD and the MWDOC Water Shortage Contingency
Plans,
Section 10631(e)(7) of the Act requires: "An analysis of the impacts of the
' plan on the revenues and expenditures of the urban water supplier, and proposed
measures to overcome those impacts, such as the development of reserves and
' rate adjustments."
' The water rate is a combination of fixed rates and water usage charge. The
' fixed portion of the rate, which is comprised of customer service, meter demand,
debt service, and multiple dwelling unit charges, is designed to recover fixed
operating costs and '75% of funding for the Capital Improvement Program. The
' water usage charge is designed to recoverthe costs of purchasing/producing water
and 25% of funding for the Capital Improvement Program. The probable response
' to a 50% water shortage would be to reduce or defer capital spending.
' Section 10631(e)(8) of the Act requires: "A draft water shortage
contingency resolution or ordinance to carry out the urban water shortage
' contingency plan."
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F-13 Final Draft 317106
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A draft water shortage contingency plan Resolution No. 92-15 and
Certification for said resolution is included in the Appendix of this Plan. '
Section 10631(e)(9) of the Act requires: "A. mechanism for determining ,
actual reduction in water use pursuant to the urban watershortage contingency
plan." ,
TWS maintains monthly water production statistics by source. It utilizes ,
this information to monitor its water conservation program. Samples of reports '
have been included in the Appendix for your reference.
Section 10631 if) of the Act requires: "To the extent feasible, describe the ,
method which will be used to evaluate the effectiveness of each conservation '
measure implemented under the plan."
The TWS will use the data as specified in Section 10631(e)(9) to evaluate ,
the effectiveness of each element of its water conservation plan. ,
Section 10631(g) of the Act requires: "Describe the steps which would be
necessary to implement any proposed actions in the plan.." '
The steps necessary are outlined in Ordinance Nos. 1060 and 1063, and in '
Resolution No. 92-15.
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' F-15 Final Draft 317106
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CITY OF TUSTIN ,
WATER SHORTAGE CONTINGENCY PLAN
1
GENERAL INFORMATION
1
This plan was prepared by:
City of Tustin Water Service '
15222 Del Amo
Tustin, California 92680 ,
(714) 573-3375
Fax (714) 838-0039
For information concerning this plan contact: 1
City of Tustin Water Service ,
Gary Veeh, Water Service Manager, (714) 573-3381
Michael Martin, Water Services Engineer, (714) 573-3380
For water conservation information contact:
City of Tustin Finance Department, Water Billing ,
Irma Hernandez, Administrative Assistant, (714) 544-8890, Ext. 262
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OFFICIAL NOTICE
OF
PUBLIC HEARING
T'USTIN CITY COUNCIL
1
OFFICIAL NOTICE OF PUBLIC HEARING
CITY OF TUSTIN
' Notice is hereby given that the City Council of the City of Tustin; California, will
conduct a public hearing on February 3, 1992 at 7:00 p.m. in the Council
' Chambers, 300 Centennial Way, Tustin, California to consider the following:
Tustin Water Shortage Contingency Plan
' A plan required by Assembly Bill No. 11 ("AB-1 1 ") approved by the Governor
on October' 13, '1991 . AB-11 amends certain sections of the Urban Water
' Management Plan (AB-797), which the City Council adopted on March 4, 1991.
AB-11 requires that every urban water supplier providing municipal water
directly or indirectly to more than 3,000 customers or supplying more than
3,000 acre-feet of water annually, prepare and adopt in accordance with
prescribed requirements, a Water Shortage Contingency Plan containing
' prescribed elements, and requires the plan be filed with the California
Department of Water Resources.
' Information relative to this item is on file in the Public Works Department and
is available for public inspection. at City Hall. Anyone interested in the
information above may call the Public Works Department at ('714) 544-8890,
' ext 280.
Mary E. Wynn
City Clerk
Publish: January 23, 1992 &
' January 30, 1992
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DRAFT1
RESOLUTION N0. 92-15
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF ,
TUSTIN, CALIFORNIA, ADOPTING THE TUSTIN WATER
SHORTAGE CONTINGENCY PLAN
1
The City Council of the City of Tustin does hereby resolve as follows: '
WHEREAS, the CITY COUNCIL of the CITY OF TUSTIN, CALIFORNIA ("City"),
has heretofore undertaken proceedings to review the Tustin Water Shortage
Contingency Plan ("Plan") pursuant to Assembly Bill No. 11 ("AB-11") of the '
State of California approved by the Governor October 13, 1991; and,
WHEREAS, said Plan is an amendment to the Urban Water Management. Plan '
(AB-797), adopted by City Council on March 4, 1991 by Resolution No. 91-27;
and,
WHEREAS, said Plan was prepared in accordance with AB-11; and,
WHEREAS, said proceedings provide for the adoption of the said Plan
consisting of water shortage/conservation elements; and, '
WHEREAS, a public hearing was duly called, noticed and held on said
Plan on February 3, 1992 pursuant to AB-11. ,
NOW, THEREFORE, it is hereby resolved as follows:
Section 1. That the above recitals are all true and correct. '
Section 2.. That it is hereby ordered that said Plan be filed with the
State of California Department of Water Resources. ,
Section 3. The City Manager is hereby authorized to declare a Water
Shortage Emergency, should such an emergency exist, and implement this Plan. '
Section 4. The City Manager shall make recommendations to the City
Council regarding additional procedures, rules, and regulations to carry out '
effective and equitable allocation of water resources during a water
shortage.
PASSED AND ADOPTED by the City Council of the City of 'Tustin at a '
regular meeting held on the 3rd day of February, 1992.
C ar es E. Fuc ett, Mayor '
1
Mary .. ynn, City C er
Final Draft 317106 F-18 '
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Resolution 92-15, Page 2 DRAFT FT
STATE OF CALIFORNIA )
' COUNTY OF ORANGE ) SS
CITY OF TUSTIN )
' CERTIFICATION FOR RESOLUTION NO.. 92-15
Mary E. Wynn, City Clerk and ex-officio Clerk of the City Council of the City
of Tustin, California, does hereby certify that the whole number of the
members of the City council is five; that the above and foregoing Resolution
was duly and regularly passed and adopted at a regular meeting of the City
Council held on the 3rd day of February, 1992 by the following vote:
' COUNCILMEMBER AYES:
COUNCILMEMBER NOES:
' COUNCILMEMBER ABSTAINED:
COUNCILMFMBER ABSENT:.
' Mary ynn, City C er
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ORDINANCES/RESOLUTIONS 1
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ORDINANCE NO.. 1060
' AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF TUSTIN,
CALIFORNIA, FINDING AND DETERMINING THE NECESSITY FOR AND
ADOPTING A WATER MANAGEMENT PROGRAM
The City Council of the City of Tustin does hereby ordain as follows:
' SECTION 1 . Declaration of Policy. California Water Code
Sections 375 et seq. permit public entities which supply water at
retail to adopt and enforce a water conservation program to reduce the
quantity of water used by the people therein for the purpose of conserving
the water supplies of such public entity. The City Council of the City of
Tustin hereby establishes a comprehensive water conservation program
' pursuant to California Water Code Sections 375 et seq.., based upon the
need to conserve water supplies and to avoid or minimize the effects of
any future shortage.
' SECTION 2. Findings. The City Council of the City of 'Tustin finds
and determines that a water shortage will exist upon the occurrence of one
or more of the following:
1 (A) A general water supply shortage due to limited supplies.
' (B) Distribution or storage facilities of the Metropolitan Water
District of Southern California, the Municipal Water District
of Orange County, the East Orange County Water District, or
' the City of 'Tustin become inadequate.
(C) A major failure of the supply, storage and distribution
facilities of the Metropolitan Water District of Southern
California, the Municipal Water District of Orange County,
the East Orange County Water District, or of the City of
Tustin occurs.
The City Council of' the City of Tustin also finds and determines that the
conditions prevailing in State and in the Orange County area require that
' the water resources available be put to maximum beneficial use to the
extent to which they are capable, and that the waste or unreasonable use,
or unreasonable method of use, of water be prevented and that the
conservation of such water encouraged with a view to the maximum
reasonable and beneficial use thereof in the interests of the people of
the City of Tustin and for the public welfare.
' SECTION 3. CE4A Exemption. The City Council of the City of Tustin
finds that this Ordinance and actions taken hereafter pursuant to this
Ordinance are exempt from the California Environmental Quality Act as
specific actions necessary to prevent or mitigate an emergency pursuant to
Public Resources Code Section 21080(b) (4) and the California
Environmental Quality Act Guidelines Section 15269(c) ..
1 /
F-21 Final Draft 317106
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Ordinance No.. 1060, Page 2 ,
The City Manager of the City of Tustin is hereby authorized and directed ,
to file a Notice of Exemption as soon as possible following adoption of
this Ordinance.. '
SECTION 4 Apnlication. The provisions of this Ordinance
shall apply to all persons, customers, and property served by the City ,
of Tustin water service.
SECTION 5. Authorization. The City Manager or a
designated representative is hereby authorized and directed to implement ,
the provisions of this Ordinance.
SECTION 6 Water Conservation Staves. No customer of the City ,
shall knowingly make, cause, use, or permit the use of water supplied by
the City for residential, commercial, industrial, agricultural,
governmental or any other purpose in a manner in excess of the amounts
authorized by this Ordinance, or during any period of time other than the ,
periods of time specified in this Ordinance. AT NO TIME SHALL WATER BE
WASTED OR USED UNREASONABLY. The following stages shall take effect upon
declaration as herein provided. ,
(A) STAGE 1 - VOLUNTARY COMPLIANC - WATER WATCH. STAGE 1
applies during periods when the possibility exists that the
City will not be able to meet all of the demands of its ,
customers. During STAGE 1, all elements of STAGE 2 shall
apply on a voluntary basis only.
(B) STAGE 2 - MANDATORY COMPLIANCE - WATER ALERT. STAGE. 2
applies during periods when the probability exists that the
City will not be able to meet all of the water demands of
its customers or when statewide shortages cause a need for ,
local conservation measures to be implemented. During STAGE
2, the following water conservation measures shall apply
except when reclaimed or recycled water is used.
1. Lawn watering and landscape irrigation, including
construction meter irrigation, is not permitted between
the hours of 10:00 a.m. and 6:00 p.m. any day. Watering
is permitted at any time if a hand-held hose equipped
with a positive shut-off nozzle is used, a
hand-held faucet-filled bucket of five (5) gallons or '
less is used; or a drip irrigation system is used.
Watering shall be done as needed only.
2. Water shall not be used to wash down streets, gutters,
sidewalks, driveways, parking areas, tennis courts,
patios, pool decks, or other paved areas, except to
alleviate immediate fire or sanitation hazards.. ,
3. Washing of autos, trucks, mobile homes, buses,
trailers, boats, airplanes and other types of mobile ,
equipment shall be done with a hand-held bucket or a
hand-held hose equipped with a positive shut-off nozzle
Final Draft 317106 F-22 ,
1 -
Ordinance No.. 1060, Page :3
' for quick rinses. Washing is permitted at any time on
the immediate premises of a commercial car wash.
Further, such washing is exempted from these
regulations where health, safety and welfare of the
public is contingent upon frequent vehicle cleaning such
as garbage trucks and vehicles used to transport food
and perishables.
4. Watering parks, school grounds, public facilities, and
recreational fields is not permitted between the hours
of 10:00 a..m. and 4:00 p.m.
5. Restaurants shall not serve water to their customers
except when specifically requested.
6. The operation of any ornamental fountain or similar
structure is prohibited unless reclaimed water is used.
7. Agriculture users and commercial nurseries as defined
in the Metropolitan Water District Code are exempt
from STAGE 2 irrigation restrictions, but will be
required to curtail all non-essential water use.
(C) STAGE 3 - MANDATORY COMPLIANCE - WATER WARNING. STAGE
3 applies during periods when the City will not be able to
meet all the water demands of its customers. During STAGE
3, the following water conservation measures shall apply
except when reclaimed or recycled water is used.
' 1. Lawn watering and landscape , irrigation, including
construction meter irrigation, is `permitted only on
designated irrigation days and only between the hours
of 6:00 p.m. and 6:00 a.m. A "designated irrigation
day" is determined by the last digit in the street
address. Properties with addresses ending in an even
' number may use water on even numbered days and addresses
ending with an odd number may use water on odd numbered
days.
2. Water shall not be used to wash down streets, gutters,
sidewalks; driveways, parking areas, tennis courts,
patios, pool decks, or other paved areas, except to
' alleviate immediate fire or sanitation hazards.
3. Washing of autos, trucks, mobile homes, buses, trailers,
' boats, airplanes and other types of mobile equipment is
prohibited. Washing is permitted at any time on the
immediate premises of a commercial car wash. The use of
water by all types of commercial car washes not using
' partially reclaimed or recycled water shall be reduced
in volume by 20%. Further, such was are exempted
from these regulations where the health, safety and
welfare of the public , is contingent upon frequent
vehicle cleaning such as garbage trucks and vehicles
used to transport food and perishables.
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F-23 Final Draft 317106
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Ordinance No. 1060, Page 4
4. Watering parks, school grounds, public facilities, and '
recreational fields is permitted only after 6:00 p..m,
and before 6:00 a.m. ,
S. The use of water from fire hydrants shall be limited to
fire fighting and related activities, or other '
activities necessary to maintain the health, safety and
welfare of the public.
6. Agricultural users and commercial nurseries shall use '
water only between the hours of 6:00 p.m. and 6:00 a.m.
7. Restaurants shall not serve water to their customers '
except when specifically requested.
8. The operation of any ornamental fountain or similar
structure is prohibited.
9. All water leaks shall be repaired immediately.
I0. Construction water shall not be used for earthwork or '
road construction purposes unless authorized as a
mitigation or erasion control, compaction or backfilling
earthwork or as required by the Air Quality Management ,
Plan (AQMP) Control Measure F-4.
11. Exceptions:. The prohibited uses of water are not ,
applicable to that use of water necessary for public
health and safety or for essential governmental services
such as police, fire and other similar emergency
services.
(D) STAGE 4 - MANDATORY COMPLIANCE - WATER EMERGENCY. STAGE 4
applies when a major failure of any supply or distribution ,
facility, whether temporary or permanent, occurs in the water
distribution system of the State Water Project, Metropolitan
Water District of Southern California, Municipal Water
District of Orange County, East Orange CountyWaterDistrict ,
or City facilities. During STAGE 4; the following water
conservation measures shall apply except when reclaimed or
recycled water is used: ,
1. All outdoor irrigation of vegetation is prohibited.
2. Water shall not be used to wash down streets, gutters,
sidewalks, driveways, parking areas, tennis courts,
patios, pool decks, or other paved areas, except to
alleviate immediate fire or sanitation hazards. ,
3. Washing of autos, trucks, mobile homes, buses, trailers,
boats, airplanes and other types of mobile equipment is '
prohibited. Washing is permitted at any time upon the
immediate premises of a commercial car wash. The use of
water by all types of commercial car washes shall be
reduced in volume by 50%. Further, such washings are
Final Draft 317106 F-24 '
1
Ordinance No.. 1060, Page 5
' exempted from these regulations where the health,
' safety and welfare of the public is contingent upon
frequent vehicle cleaning such as garbage trucks and
vehicles used to transport food and perishables.
' 4. Filling, refilling or adding of water, to swimming pools,
spas, ponds and artificial lakes is prohibited,
5.. Watering of parks, school grounds, public facilities and
recreation fields is prohibited with the exception of
plant materials classified to be rare, exceptionally
valuable, or essential to the well being of rare
animals.
6. The use of water from fire hydrants shall be limited to
' fire fighting or related activities necessary to
maintain the health, .safet.y and welfare of the public.
7.. Use of water for agricultural or commercial nursery
purposes, except for livestock watering, is prohibited.
8.. Restaurants shall not serve water to their customers
except when specifically requested.
9. The operation of any ornamental fountain or similar
structure is prohibited..
10. New construction meters or permits for unmetered service
will not be issued. Construction water shall not be
used for earth work or road construction purposes.
11. The use of water for commercial, manufacturing or
' processing purposes shall be reduced in volume by 50%.
12. No water shall be used for air conditioning purposes.
' 1.3. All water leaks shall be repaired immediately.
14. Exceptions: The prohibited uses of water are not .
' applicable to that use of water necessary for public
health and safety or for.essential governmental services
such as police, fire and other similar emergency
services..
SECTION 7 Mandatory Conservation Phase Implementation. The
City shall monitor the projected supply and demand for water by its
customers on a daily basis.. The City Manager shall determine the extent
of the conservation required through the implementation and/or termination
of particular conservation stages in order for the City to prudently plan
for and supply water to its customers.. Thereafter, the City Manager may
order that the appropriate stage of water conservation be implemented or
terminated in accordance with the applicable provision of this Ordinance..
The declaration of any stage beyond STAGE 1 shall be made by public
announcement and notice shall be published a minimum of three (3)
consecutive times in a newspaper of general circulation.. The stage
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' F-25 Final Draft 317106
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Ordinance No.. 1060, Page 6 '
designated shall become effective immediately upon announcement. The
declaration of any stage beyond STAGE 1 shall be reported to the City
Council at its next regular meeting. The City Council shall thereupon
ratify the declaration, rescind the declaration, or direct the declaration
of a different stage.
SECTION B. FAILURE TO COMPLY. t
(A) Following a declaration of a Stage 1 condition as provided
herein, upon the occurrence of violations of any of the ,
provisions of this ordinance, City shall cause written notice
to be given to each violator.
(B) Following a declaration of a Stage 2 condition as provided ,
herein, citations shall be issued to violators. The first
violation by any violator shall subject the violator to a fine
of Twenty-Five dollars ($25.00). Upon a second violation, the
violator shall be subject to a fine of Thirty--Five dollars
(;35.00). Upon a third violation, the violator shall be
subject to a fine of Forty-Five dollars ($45.00). Upon a
fourth violation, the violator shall be subject to a fine of
Fifty-Five dollars ($55.00).
(C) For the fifth violation, the city may install a flow '
restricting device in the customer's water service line for a
period not less than 48 hours and until the customer satisfies
the City that the failure to comply will not continue. The ,
charge for installing and removing the flow restricting device
shall be $65..00 and shall be paid by the customer prior• to
removal .
(D) For the sixth and each subsequent violation, the City may
discontinue water service for a period of not less than 24
hours and until the customer satisfies the City that the '
failure to comply will not continue. The customer shall pay
$70.00 for restoration of water service.
SECTION 9 Appeal Procedure. A customer shall have the right to '
appeal by filing a written request for appeal within five days with the
City Manager or his designee. Within ten days after receipt of such a
request, a written decision shall be issued. The City Council or their
designee shall be the final appeal body on all decisions.
SECTION 10. Severability. If any section, sub-section, clause '
or phrase in this Water Conservation Ordinance or the application thereof
to any person or circumstances is for any reason held invalid, the
validity of the remainder of the Conservation Ordinance or the application '
of such provisions to other persons or circumstances shall not be
affected..
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Final Draft 317106 F-26 ,
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' Ordinance No , 1060, Page 7
' PASSED AND ADOPTED by the City Council of the City of Tustin at a
' regular, meeting held on the 18th day of March , 1991.
RC ARD G ayor
MANY L. WON, City er
1
' STATE OF CALIFORNIA )
COUNTY OF ORANGE ) SS
CITY OF TUSTIN )
CERTIFICATION FOR ORDINANCE NO. 1060
MARY E WYNN, City Clerk and ex-officio Clerk of the City Council of the
' City of Tustin, California, does hereby certify that the whole number of
the members of the City Council is five; that the above and foregoing
Ordinance was duly and regularly read and introduced at a meeting of the
' City Council held on the 4th day of March , 1991, and was given
its second reading and duly passed an'cfadopted at a meeting of the City
Council held on the 18th day of March _. 1991, by the following
roll call vote:
' COUNCILMEMBER AYES: Edgar, Puckett, Ponti.ous, Potts, Prescott
COUNCILMEMBER NOES: None
COUNCIEMEMBER ABSTAINED: Clone
COUNCILMEMBER ABSENT: None
Mary W,yn City
' F-27 Final Draft 317106
1
1
ORDINANCE NO. 1063
AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF TUSTIN, '
CALIFORNIA, ESTABLISHING.A MANDATORY.WATER CONSERVATION
AND RATIONING PROGRAM ,
The City Council of the City of Tustin does hereby ordain as
follows:
SECTION 1 Water COnsumptiOn .Reduction.
A. Findings. The City Council hereby finds and determines '
as follows: the State of California is entering the fifth year of
an unprecedented drought; water levels at many reservoir's are at an
a1.1 time low; deliveries of water to the Southern California region
from the State Water project, Colorado River, Owens Valley and Mono ,
County have declined due to the .lack of rainfall and litigation
regarding entitlement; the Metropolitan Water District Of Southern
California (MWD) is the supplier of thirty percent (30%) of the ,
water supplied to the Tustin Water Service and MWD has seduced the
City's allocation of water' by thirty percent (30%) as of March 11
1991. and advised that it will charge the City a premium of at least ,
Three Hundred Ninety-Four Dollar's ($394) per acre foot for delivery
of water in excess of new allocation levels; the Mandatory
Conservation Rate on the effective date of this ordinance is a
collective fifteen percent (15%) ; this Conservation Rate ,
corresponds with the recent decision of MWD to allocate only
seventy percent (70%) of the water' used by the City during
comparable periods in the past; the failure of Tustin Water Service '
consumers to collectively reduce water consumption may lead to even
more drastic. cutbacks in allocations, deliveries, and costs; the
failure to reduce water consumption and a continuation of the
drought may, in the long term, result in the inability of the City ,
to supply water at or above minimum levels required for health and
sanitation; this ordinance will promote reductions in water
consumption and permit recovery of additional costs incur'r'ed with ,
the purchase of water and the administration of water' conservation
measures.
B. Definitions. '
1. "Billing Peii.od" means the time interval between two
consecutive water meter readings taken for billing purposes and ,
will average sixty (60) days..
2. "Bil.ling Unit" means one hundred (100) cubic feet of ,
water (748 gallons) ..
3, "MWD" shall. mean The Metropolitan Water District of
Southern California.. '
JGR:j-b:R6:3-18-91(o 6063 j•b)
Final Draft 317106 F-28
1 .
' Ordinance No., 1063 , Page 2 .
1
4 . "Allowable Water Usage" means the amount of water
' delivered to a customer's premises which does not exceed the
maximum .amount established pursuant to this, ordinance and :by
resolutions of the city Council made from time to time pursuant to
the provisions of this ordinance.
1 5. "Customer" means each person or entity who has
contracted for water, service from the City of Tustin.
' 6. "Penalty Amount" shall mean the additional charge,
expressed in terms of cost per Billing Unit, imposed on water'
' consumption in excess of the Allowable Water Usage.
'7. "Water'" means potable water and does not include
reclaimed water.
C. Customer Responsibility. Each customer of the Tustin
Water Service shall be responsible for the use and misuse of all
water' pipes and facilities connected to the meter, or meters which
measure the amount of water for which the customer is obligated to
pay the City of Tustin.
1 D. Water Usage Limitation. All customers shall make all
reasonable efforts to not receive, use, consume or perini.t to be
delivered to the premises for', which the customer contracted with
' the City for service, water in an amount in excess of the Allowable
Water Usage. The Allowable Water, Usage shall be as set forth
below, effective at 12:01 a.m. on April 22, 1991:
1 summer Winter
Allotment Gallons, Allotment Gallons
Water User Mme- Oct. Per Day Nov_ - April Per Day
Single Family 48 units * 598 30 units 374
Residential Dwelling
Multi-Family unit 18 units 224 16 units 200
(including condominium unit)
Commercial business .. 138 units 1720 105 units 1309
Industrial business 278 units 3466 138 units 1720
Non-Profit establishment 186 units 2319 109 units 1359
(including church, boys
and girls club, etc_)
Government unit 675 units 8415 235 units 293o
(including school districts,
City, State)
Landscape 161 units 2007 98 units 1221
(multi.-family developments
(including condominiums)
served by Green Meter)
' 1 unit equal 100 cubic feet and equals '748 gallons
F-29 Final Draft 317106
1
Ordinance No.. 1063, Page 3 '
For purposes of this subsection, measurements of water'
consumption falling between full Billing Units shall be rounded up
to the next full Billing Unit.
E. Additional Charges and Penalties. In the event a
customer fails to comply with prescribed water usage limitations, '
an additional charge of ninety cents ($0. 90) shall be imposed on
each Billing Unit received over and above the Allowable Water
Usage_ If two consecutive billing periods show water' usage
exceeding the Allowable Water' Usage, an additionalsur'char'ge of '
twenty-five percent (25%) of the total amount of the bill
(including the additional ninety cents ($0.90) per Billing Unit
prescribed above) will be imposed. After the third consecutive ,
billing period where water usage exceeds the Allowable Water Usage
a surcharge of fifty percent (505.") of the total bill (including the
additional ninety cents ($0.90) per Billing Unit prescribed above) ,
will be imposed. For consecutive billing periods, four or' more of
which exceed the Allowable Water Usage, the City may instal.l. a flow
restricting device to reduce the amount of water supplied to the
customer, and a surcharge of seventy-five percent (751%) of the total '
charge shall. be imposed will be added to the total. bill (including
the additional. ninety cents ($0.90) per Billing Unit prescribed
above) for all periods exceeding the allowable usage. The device '
shall not be removed until such time as the customer= has provided
proof satisfactory to the City that the customer will not exceed
the Al.lowable Water Usage. A fee of Fifty Dollars ($50) shall be
charged for installing the flow restricting device. Penalties ,
shall appear on the first billing statement for that account
immediately after the Billing Period in which the excess water
usage occurred. The penalty shall be paid at the same time as the '
payment for normal water service. . Failure to pay the entire amount
due shall incur the same penalties as those imposed for failure to
pay for normal water service. '
Any excess revenues received by . the City from the
additional charges and penalties prescribed in this ordinance
greater than the additional charges and penalties paid by the City
to the MWD, shall be used by the city solely for capital
improvement costs of water facilities.
F. Changes in Allowable Water' Usage Charges Penalties,
etc. The City Council may by resolution adopted from time to time
set, revise., increase or decrease the Allowable Water Usage and the
charges, surcharges and penalties as deemed necessary to ,
accommodate water allocations, charges and penalties imposed by MWD
and other factor's affecting thesupplyand cost of water to the
City of Tustin. Such resolutions shall become effective as '
specified in such resolutions and shall within ten (10) days of
their adoption be published in a newspaper' of general circulation,
printed, published and circulated in the City of Tustin. '
G_ New Customers. The water billing section shall notify
new customers of their Allowable Water Usage rate, charges,
Final Draft 317106 F-30
' Ordinance No. 1063, Page 4
' penalties, etc. , at the time application is made for new water,
service.
H. Adjustments. The City Manager or designee upon
application by a customer for relief, shall have the authority to
' modify the billing to a customer if the City Manager or designee
determines that strict application of the provisions of this
ordinance would create undue hardship to, or result in inequitable
' treatment of, the customer.
I. Relief from Compliance.
1. A customer may file an application for relief from
' the water usage reduction requirements of this ordinance. The
application shall, be on a form px'ovided by the City and shall
specify the basis for the requestforrelief. The application
' shall be filed with the City Manager or designee. An application
seeking relief relative to a previously billed amount shall be
filed within fifteen (15) days afterthe date on which the water
bill was mailed to the customer'. In determining whether' to grant
relief and the nature.of any relief, the City Manager or designee
may consider the following:
' (a) Whether mandated reduction in water usage will
result in unemployment;
' (b) .Whether' a larger number of persons than average
reside or are employed on the premises;
(c) Whether a . commercial or industrial user has
' previously undertaken extensive water conservation activities and
an additional reduction in allowable water usage would be a
hardship;
' (d) Whether specific health or safety
considerations are present that require the use of water in excess
of the Allowable Water Usage.
' 2. No relief shall be granted to any customer in the
absence of a showing that the customer has achieved the- maximum
practical .reduction in water consumption aside from those factors
which would otherwise warrant an adjustment. No relief shall be
granted to any customer' who fails to provide the City Manager, or
' designee with requested information relevant to a determination of
the adequacy of the grounds of relief or a finding that maximum
practical. reduction and consumption has been achieved.'
' 3. The decision of the City Manager or designee shall
be made after all material has been reviewed..
' 4. The City Manager ox designee will make a
determination no later than fourteen (14) days after the appeal -is
received. If an appeal is decided in full. or partial favor' of the
customer, an immediate adjustment will be made to the customer's
1
F-31 Final Draft 317106
Ordinance No. 1063 , Page 5
account. If the appeal is rejected, customer must pay the bill .in '
full within five (5) business days to avoid service interruption-
Provided, however, if the customer files anappealwith the Water ,
Appeals Board, to be appointed by the City Council, payment need
not be made until five (5) business days following decision of the
Board. Appeals of decisions of the Water Appeals Board may be made '
to the City council, provided, however, the customer must first
make a deposit with the city of seventy-five percent ('75%) of the
disputed bill to avoid service interruption.
J. Confirmation. A customer shall have the right to request 1
confirmation of the amount of waterused during a Billing Period
for which the customer has been billed. '
K. Irrigation. Where an improperly maintained irrigation
system results in a waste of water, e..g. , causes excessive runoff,
the City Manager' or designee shall have the • authority to
discontinue water service. Notice of the termination of service
shall be given by posting notice of the decision on the meter which
measures water flowing through the system and by mailing written
notice of the decision to the customer' within twenty-four (24)
hours after' service was terminated. The customer shall have the
right to appeal the decision to terminate service by filing a '
written request for hearing with the City Manager or designee
within fifteen (15) days after the date on which notice was mailed..
Appeals of the decision of the City Manager or designee may be made
to the Water Appeals Board and thereafter to the City Council. ,
SECTION 2. The City Council. finds and declares that adoption
of this ordinance as an emergency measure is necessary to preserve '
the public peace, health, and safety in that:
A. . California is currently experiencing a drought of
unprecedented magnitude with current water reserves throughout the '
State far- below normal.
. B_ The City has initiated a voluntary water conservation '
program, but the program has not achieved the desired results.
C.. Metropolitan Water District, the supplier of imported '
water to the City of Tustin, has announced its intention to reduce
the amount of water deliveredtothe City and to impose a surcharge
on all water' sold to the City in excess of new allocation levels..
The sur'char'ge and reduced allocation levels were effective on
February 1, 1991 and compliance with MWD directives cannotbe
achieved other than through the adoption of an emergency ordinance..
D. The imposition of penalties on excess consumption of '
water wi.11 reduce water usage and allow the City to recover the
additional costs it incurs relative to the purchase of water from ,
MWD..
Final Draft 317106 F-32 '
1
1
RESOLUTION NO. 91-27
' A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF
TUSTIN, CALIFORNIA, ADOPTING THE TUSTIN URBAN WATER
' MANAGEMENT PLAN
' The City Council of the City of Tustin does hereby resolve as follows:
WHEREAS, the CITY COUNCIL of the CITY OF TUSTIN, CALIFORNIA ("City"),
has heretofore undertaken proceedings to review the Tustin Urban Water
Management Plan ("Plan") pursuant to Assembly Bill No. 797 ("AB-797") of the
' State of California approved by the Governor September 21, 1983; and,
WHEREAS, said Plan was prepared in accordance with AB-797; and,
' WHEREAS, said proceedings provide for the adoption of the said Plan
consisting of water conservation elements; and,
' WHEREAS, a public hearing was duly called, noticed and held on said
Plan on March 4, 1991 pursuant to AB-797.
NOW, THEREFORE, it is hereby resolved as follows:
Section 1. That the above recitals are all true and correct..
Section 2. That it is hereby ordered that said Plan be filed with the
State of California Department of Water Resources.
PASSED AND ADOPTED by the City Council of the City of Tustin at a
regular meeting held on the 4th day of March, 1991.
' Richard gar, Ma r
Mary E'.. 16 n, city er
1
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' F-35 Final Draft 317106
1
City of Tustin '
RESOLUTION CERTIFICATION
1
1
STATE OF CALIFORNIA )
COUNTY OF ORANGE ) SS
CITY OF TUSTIN )
RESOLUTION NO. 91-27 ,
MARY E. WYNN, City Clerk and ex-officio Clerk of the City Council of
the City of Tustin, California, does hereby certify that the whole ,
number of the members of the City Council of the City of Tustin is
five; that the above and foregoing Resolution No. 91-27 was duly and
regularly introduced, passed and adopted at a regular meeting of the
City Council held on the 4th day of March. 1991 by the following vote: ,
COUNCILMEMBER AYES: Edgar, Puckett, Pontious, Potts, Prescott
COUNCILMEMBER NOES: None ,
COUNCIIMEMBER ABSTAINED: None
COUNCILMEMBER ABSENT: None
Mary E. Vynn, Ci Clerk
1
1
1
1
1
Final Draft 317106 F-36 '
1
1
RESOLUTION NO. 91-27
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF
TUSTIN, CALIFORNIA, ADOPTING THE TUSTIN URBAN WATER
MANAGEMENT PLAN
' The City Council of the City of Tustin does hereby resolve as follows:
' WHEREAS, the CITY COUNCIL of the CITY OF TUSTIN, CALIFORNIA ("City"),
has heretofore undertaken proceedings to review the Tustin Urban Water
Management Plan ("Plan") pursuant to Assembly Bill No. 797 ("AB-797") of the
State of California approved by the Governor September 21, 1983; and,
WHEREAS, said Plan was prepared in accordance with AB-797; and,
' WHEREAS, said proceedings provide for the adoption of the said Plan
consisting of water conservation elements; and,
' WHEREAS, a public hearing was duly called, noticed and held on said
Plan on March 4, 1991 pursuant to AB-797.
' NOW, THEREFORE, it is hereby resolved as follows:
Section 1. That the above recitals are all true and correct..
1 Section 2. That it is hereby ordered that said Plan be filed with the
State of California Department of Water Resources.
PASSED AND ADOPTED by the City Council of the City of 'Tustin at a
regular meeting held on the 4th day of March, 1991.
Ric aRic rd—B.—Edgar, MaAr Mary E, Wpn, city kyerk
1
F-35 Final Draft 317106
1
City of Tustin '
RESOLUTION CERTIFICATION
STATE OF CALIFORNIA )
COUNTY OF ORANGE ) SS ,
CITY OF TUSTIN )
RESOLUTION NO. 91-27 ,
MARY E. WYNN, City Clerk and ex-officio Clerk of the City council of
the City of Tustin, California, does hereby certify that the whole '
numberof the members of the City council of the City of Tustin is
five; that the above and foregoing Resolution No. 91-27 was duly and
regularly introduced, passed and adopted at a regular meeting of the
City Council held on the 4th day of March, 1991 by the following vote: ,
COUNCILMEMBER AYES: Edgar, Puckett, Pontious, Potts, Prescott
COUNCILMEMBER NOES: None '
COUNCILMEMBER ABSTAINED: None
COUNCILMEMBER ABSENT: None
Mary E. n, Ci Clerk
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Assembly Bill No. 11
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Passed the Assembly September 13, 1991
Cri'ef Cle of the Assembly
Passed the Senate September 11, 1991
Secretary of the Senate
This bill was received by the Governor this 7 `
day of ' ''Y` �' 1991, at o'clock F-M..
Private S czetary o t e Gove nor'
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AB 11 — 2 —
CHAPTER —
An act to amend Sections 10620, 10621, 10631, and 10652
of, and to add Section 10656 to, the Water Code, relating ,
to water.
LEGISLATIVE: COUNSEr. S DIGEST '
AB 11, Filante. Urban water management plans.
(1) Existing law requires every urban water supplier-
serving
upplierserving water directly to customers to, not later than
December 31, 1985, prepare and adopt an urban eater
management plan. Existing law authorizes an urban 1
water supplier indirectly providing water to customers to
adopt an urban water management plan or to participate
in urban water management planning. ,
This bill would, instead, require every urban water
supplier, whether serving water directly or indirectly to
customers, to prepare and adopt an urban water
management plan, as prescribed.
(2) Existing. law requires the urban water
management plan to include a prescribed description of ,
water supply deficiencies.
This bill would delete that provision and would require ,
the urban water management plan to include an urban
water shortage contingency plan, as specified. The bill ,
would require each urban water supplier to coordinate
the preparation of its urban water shortage contingency
plan with other urban water suppliers and public
agencies in the area to the extent practicable. The bill
would require each urban water supplier, not later than ,
January 31, 1992, to prepare, adopt, and submit to the
Department of Water Resources an amendment to its
urban water management plan which meets the ,
requirements relating to the preparation of the urban
water shortage contingency plan. The bill would make an
urban water supplier, that does not submit the ,
amendment by that date ineligible to receive drought
assistance from the state until the urban water ,
management plan is submitted, as prescribed.
(3) Existing law exempts the preparation and
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adoption of urban water management plans from the
California Environmental Quality Act.
This bill would exempt the implementation of urban
water shortage contingency plans from that act. The bill
would provide that the exemption provisions do not
exempt specified projects from the requirements of that
' act.
The people of the State of California do enact as follows:
SECTION 1. Section 10620 of the Water Code is
amended to read:
10620. (a) Every urban water supplier shall prepare
and adopt an urban water management plan in the
manner set forth in Article 3 (commencing with Section
10640).
(b) Every person that becomes an urban water
supplier after December 31, 1984, shall adopt an urban
water management plan within one year after it has
become an urban water supplier.
(c) An urban water supplier indirectly providing
water slraIl not include planning elements in its water
management plan as provided in Article 2 (commencing
with Section 10630) that would be applicable to urban
water suppliers or public agencies directly providing
water, or to their, customers, without the consent of those
suppliers or public agencies.
(d) (1) An urban water supplier may satisfy the
requirements of this part by participation in area 'Wide,
regional, watershed, or basinwide urban water
I management planning where those plans will reduce
preparation costs and contribute to the achievement of
conservation and efficient water use.
(2) Each urban water supplier shall coordinate the .
preparation of its urban water shortage contingency plan
with other urban water suppliers and public agencies in
the area, to the extent practicable.
(e) The urban water supplier may prepare the plan
with its own staff', by contract, or in cooperation with
other governmental agencies..
SEC. 2. Section 10621 of the Water Code is amended
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to read:
10621. (a) Each urban water supplier shall, not later
than January 31, 1992, prepare, adopt, and submit to the
department an amendment to its urban water
management plan which meets the requirements of
subdivision (e) of Section 10631.
(b) Each urban water supplier shall periodically
review its plan at least once every five years. After the
review, it shall make any amendments or changes to its
plan which are indicated by the review. Amendments or
changes in its plan shall be adopted and filed in the ,
manner set forth in Article 3 (commencing with Section
10640).
SEC. 3. Section 10631 of the Water Code is amended
to read:
10631. A plan shall do all of the following:
(a) Include an estimate of past, current, and projected ,
water use and, to the extent records are available, '
segregate those uses between residential, industrial, ,
commercial, and governmental uses.
(b) Identify conservation measures Currently adopted
and being practiced
(c) Describe alternative conservation measures,
including, but not limited to, consumer education, '
metering, water saving fixtures and appliances, lawn and
garden irrigation techniques, and low water use
landscaping, which would improve the efficiency of ,
water use with an evaluation of their costs and their
environmental and other significant impacts. i
(d) Provide a schedule of implementation for ■
proposed actions as indicated by the plan.
(e) Provide an urban water shortage contingency plan ,
which includes all of the following elements which are
within the authority of the urban water supplier:
(1) Past, current, and projected water use and, to the
extent records are available, a breakdown of those uses on
the basis of residential single family, residential
multifamily, industrial, commercial, governmental, and ,
agricultural use,
(2) An estimate of the minimum water supply ,
available at the end of 12, 24, and 36 months, assuming the
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worst case water supply shortages.
(3) Stages of action to be undertaken by the urban
water supplier in response to water supply shortages,
including up to a 50 percent reduction in water supply,
and an outline of specific water supply conditions which
are applicable to each stage.
(4) Mandatory provisions to reduce water use which
include prohibitions against specific wasteful practices,
such as gutter flooding.
(5) Consumption limits in the most restrictive stages.
Each urban water supplier may use any type of
consumption limit in its water shortage contingency plan
that would reduce water use and is appropriate for its
area. Examples of consumption limits that may be used
include, but are not limited to, percentage reductions in
water allotments, per capita allocations, an increasing
block rate schedule for high usage of water with
' incentives for conservation, or restrictions on specific
uses.
(6) Penalties or charges for excessive use.
(7) An analysis of the impacts of the plan on the
revenues and expenditures of the urban water supplier,
' and proposed measures to overcome those impacts, such
as the development of reserves and rate adjustments..
(8) A diaft water shortage contingency resolution or
ordinance to carry out the urban water shortage
contingency plan.
(9) A mechanism for determining actual reductions in
' water use pursuant to the urban water shortage
contingency plan.
' (f) To the extent feasible, describe the method which
will be used to evaluate the effectiveness of each
conservation measure implemented under the plan.
(g) Describe the steps which would be necessary to
implement any proposed actions in the plan.
SEC. 4.. Section 10652 of the Water Code is amended
to read!
10652, The California Environmental Quality Act
(Division 13 (commencing with Section 21000) of the
Public Resources Code) does not apply to the
preparation and adoption of plans pursuant to this part or
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AB 11 — 6 —
to the implementation of subdivision (e) of Section 10631_ ,
Nothing in this. part shall be interpreted as exempting ,
from the California Environmental Quality Act any
project that would significantly affect water supplies for
fish and wildlife, or any project for implementation of the
plan, other than projects implementing subdivision (e) of ,
Section 10631, or any project for expanded or additional
water supplies. ,
SEC. 5. Section 10656 is added to the Water Code, to
read: ,
10656. An urban water supplier that does not submit
an amendment to its urban water management plan
pursuant to subdivision (a) of Section 10621 to the ,
department by January 31, 1992, is ineligible to receive
drought assistance from the state until the urban water
management plan is submitted pursuant to Article 3 '
(commencing with Section 10640) of Chapter 3.
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1 APPENDIX G
1 DRAFT WATER SHORTAGE STAGE RESOLUTION
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DRAFT
! Resolution No.
! A RESOLUTION OF THE CITY COUNCIL OF
THE CITY OF TUSTIN FINDING THE
! EXISTENCE OF A WATER SHORTAGE,
ORDERING THE IMPLEMENTATION OF STAGE_OF
ORDINANCE NO. 1060 AND
! ADOPTING A SCHEDULE OF PENALTIES.
! WHEREAS, the Municipal Water District of Orange County and/or Orange
County Water District has implemented a mandatory reduction program for its member
agencies, including the City of Tusin; and
! WHEREAS, the City Council has Ordinance No.1060 to regulate water use and
! implement water conservation, which provides that the City Council may, upon finding
that a water shortage exists, order implementation of a plan which it deems appropriate to
address such a water shortage and shall establish a schedule of penalties to be assessed
! for violation of that plan.
NOW, THEREFORE, BE IT RESOLVED BY TILE CITY COUNCIL OF
! THE CITY OF TUSTIN AS FOLLOWS:
I. That, for the reasons hereinabove set forth, the City Council hereby finds and
determines that a Water Shortage exists in the City of Tustin service area.
! 2. That the City Council hereby orders implementation of the Water Shortage
Contingency Plan, Stage , as set forth in Ordinance No. 1060.
3. That the following penalties shall be assessed for violation of the Water Shortage
' Contingency Plan, including waste of water and excessive use, as follows:
1) Stage 1 Violation—Written notice from City to violator.
! 2) Stage 2 Violation—Citations will be issued to violators. The first violation
by any violator shall subject the violator to a fine of $25. A second
! violation will result in a affine of$35. A third violation will result in a fine
of$45. A fourth violation will result in a fine of$55.
3) The fifth violation allows the City to install a flow restricting device in the
! customer's water service line for a period not less than 48b hours and until
the customer satisfies the City that the failure to comply will not continue.
The charge for installing and removing the flow restricting device shall be
! $65 and shall be paid by the customer prior to removal.
4) For the sixth and each subsequent violation, the City may discontinue
! water service for a period of not less than 24 hours and until the customer
satisfies the City that the failure to comply will not continue. The
customer shall pay $70 for restoration of water service.
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PASSED AND ADOPTED by the City Council of the City of Tustin this _day of
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MAYOR OF THE CITY OF TUSTIN
ATTEST: ,
CITY CLERK
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APPENDIX H
INDIVIDUALS AND ORGANIZATIONS CONSULTED
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Citv of Tustin Water Services
• Art Valenzuela, Treatment Superintendent
• Brian McNamara, Distribution Superintendent
• Victor Sagredo, P.E., Associate Engineer
• Fred Adjarian, Water Services Manager
• Tim Serlet, P.E., Director Public Works/City Engineer
! Municipal Water District of Orange County
• Karl Seckel, P.E., Asstistant General Manager
■ Joe Berg, Conservation Coordinator
Orange County Water District
• Roy Herndon, Hydrologist
• John Kennedy, Assistant General Manager
• Bill Everest, Project Manager
East Orange Countv Water District
• Bill Redcay, General Manager
• Harvey Gobas, District Engineer
• Denise Dobson, Administrative Assistant
Metropolitan Water District of Southern California
• Brandon Goshi, Manager, Resource Analysis Unit, Water Resource Management
Group
• Gary Tikian, Resource Analysis Unit, Water Resource Management Group
Michael Hurley, Water Resource Management Group
California Department of Water Resources
iDavid Todd, Land and Water Use Program Manager, Office of Waste Use
Efficiency and Transfer
Orange County Sanitation District
• Nick Arhontes, Manager, Collection Facilities Operation and Maintenance and
Facilities Services
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